矿用低压防爆开关的原理及故障析刘书平(三级)

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矿用真空隔爆馈电开关附带说明书和原理图

一、概述本系列开关是用于煤矿移动变电站低压侧馈电开关，和煤矿井下配电系统总开关或分支开关。

也可作为不频繁起动的电动机控制开关。

本厂生产的馈电开关有采用单片计算机保护系统和电子式保护系统两种。

此说明书只适用于电子式保护系统。

二、使用环境条件1、海拔高度不超过1000米；2、周围环境温度-5～40℃；3、周围空气相对湿度不超过95%（+25℃）；4、污染等级为3级，安装类别为Ⅲ类；5、在有甲烷和煤尘爆炸危险的空气中；6、在没有淋水的地方；7、无对金属和绝缘体有害的气体；8、安装倾斜都不大于15度，没有强烈震动场所。

三、基本参数额定电压1140V或660V额定电流630A、500A、400A电源频率50HZ工作制连续工作制控制操作电压～48V、～127V外型尺寸508×780×854重量300kg极限通断能力12.5KA（630开关）9KA（400、500开关）电寿命3000次机械寿命10000次四、结构1、壳体用钢板焊接加工制成。

门为快动平面止口式，利用左侧凸轮手柄提起，转移出止口限位围，即可将门打开，使用方便。

2、前门上装有电压表、电流表、KΩ表、信号显示窗、复位按扭、过流按扭、漏电按扭。

箱体右侧设有合闸按扭、分闸按扭、隔离开关手柄。

3、箱体上部是隔爆型接线腔，有四个主电缆引出口和三个控制电缆引出口。

与移动变电站配套运行时，可四路同时输出；作为配电系统总开关或分支开关时，其中一路作为电源输入，其余可同时输出。

4、箱体腔上部装有真空断路器，它与主回路连接采用三相插接式结构，利用装在腔上方的杠杆可方便的将断路器沿导轨推入或拉出，使其接入或断开电源和负载。

5、箱体底部装有保护器，用插接件与其他电路连接，便于更换。

保护器装有检漏板、信号板和继电器1J、2J，保护器外壳即可防尘、又能屏蔽。

6、箱体腔后下部装有电源变压器、阻容吸收器；右侧右三相电抗器、控制电路的熔断器和隔离开关。

7、前门侧的仪表、按扭等都装在一块表板上，仪表板用铰链安装，与箱体的电气连接采用插接件，便于安装、更换和维修。

煤矿低压馈电开关故障探析

煤矿低压馈电开关故障探析刘朝东【摘要】矿用隔爆型真空馈电开关作为井下线路控制的总开关和分支开关,对煤矿井下供电线路的正常运行起着重要的作用.对运行中的开关进行故障判断和处理,是保证供电线路正常运行的重要环节.【期刊名称】《江西煤炭科技》【年(卷),期】2013(000)001【总页数】2页(P112-113)【关键词】馈电开关;故障分析;漏电;越级跳闸【作者】刘朝东【作者单位】河南省义马煤炭高级技工学校,河南义马472300【正文语种】中文【中图分类】TD611+.31 概述矿用隔爆型真空馈电开关适用于具有爆炸性危险气体（甲烷）和煤尘的矿井中，在交流50Hz，电压3300V、1140V和660V中性点不接地供电系统中，作为配电系统的总开关或分开关使用，也可用于大容量电动机不频繁起动的控制。

当供电线路中出现过载、短路、漏电和欠压故障时，馈电开关能自动切断电源。

可广泛应用于煤矿井下带式传输机、采煤机、刮板运输机、主扇、局扇、水泵、斜井绞车等设备的控制。

馈电开关是煤矿井下低压电网中的关键设备，其正常运行与否直接关系煤矿生产的安全性和连续性。

快速准确的进行故障分析和处理，对保证机电设备的正常运行有着非常重要的意义。

现就馈电开关的常见故障及通过理论分析难以查找的故障进行探讨。

2 故障分析的一般原则2.1 熟悉馈电开关的工作原理，尤其是控制电路目前国内生产开关的厂家很多，但其基本原理大同小异，分析时首先应掌握其共性。

而其共性最主要体现在几个线圈在开关所处不同状态是否带电。

合闸时：欠压线圈得电，分励（脱扣）线圈断电。

分闸时：按下分闸按钮，欠压线圈断电，分励（脱扣）线圈得电，欠压线圈、分励（脱扣）线圈同时作用，使断路器分闸。

合闸线圈仅在合闸时有电，合闸后断电，合闸后为机械保持。

分析原理时应根据以上各线圈在不同情况下所处状态为主线进行分析。

2.2 掌握馈电开关控制电路的特点电路接通后：（1）保护器有电，进行绝缘监视；（2）绝缘若正常，保护器保护接点闭合，为合闸做准备（同时失压线圈有电，为合闸做准备，分励线圈无电）；（3）合闸后，合闸线圈有电，线路接通。

煤矿井下防爆开关三大保护系统

煤矿井下防爆开关三大保护系统煤矿井下防爆开关三大保护系统第一章井下电器三大保护煤矿井下供电系统的过流保护、漏电保护、接地保护统称为煤矿井下电器的三大保护系统。

井下电器系统的三大保护是保证井下供电、用电安全的可靠措施。

第一节漏电保护当电气设备或导线的绝缘损坏或人体触及一相带电体时，电源和大地形成回路，有电流流过的现象，称为漏电。

井下常见的漏电故障可分为集中性漏电和分散性漏电两类。

集中性漏电是指漏电发生在电网的某一处或某一点，其余部分的对地绝缘水平仍保持正常。

分散性漏电是指某条电缆或整个网络对地绝缘水平均匀下降或低于允许绝缘水平。

一、漏电的危害及原因1.漏电的危害漏电会给人身、设备以致矿井造成很大威胁，其危害主要有四个方面:(1)人接触到漏电设备或电缆时会造成触电伤亡事故。

(2)漏电回路中碰地碰壳的地方可能产生电火花，有可能引起瓦斯煤尘爆炸。

(3)漏电回路上各点存在电位差，若电雷管引线两端接触不同电位的两点，可能使雷管爆炸。

(4)电气设备漏电时不及时切断电源会扩大为短路故障，烧毁设备，造成火灾。

2.漏电的原因(1)电缆和电气设备长期过负荷运行，使绝缘老化而造成漏电。

(2)运行中的电气设备受潮或进水，造成对地绝缘电阻下降而漏电。

(3)电缆与设备连接时，接头不牢，运行或移动时接头松脱，某相碰壳而造成漏电。

(4)电气设备内部随意增加电气元件，使外壳与带电部分之间电气间隙小于规定值，造成某一相对外壳放电而发生接地漏电。

(5)橡套电缆受车辆或其它器械的挤压、碰砸等，造成相线和地线破皮或护套破坏，芯线裸露而发生漏电。

(6)铠装电缆受到机械损伤或过度弯曲而产生裂口或缝隙，长期受潮或遭水淋使绝缘损坏而发生漏电。

(7)电气设备内部遗留导电物体，造成某一相碰壳而发生漏电。

(8)设备接线错误，误将一相火线接地或接头毛刺太长而碰壳，造成漏电。

(9)移动频繁的电气设备的电缆反复弯曲使芯线部分折断，刺破电缆绝缘与接地芯线接触而造成漏电。

矿用防爆开关的缺陷分析及改进

ＤＯＩ：１０．１６５２５／ｊ．ｃｎｋｉ．ｃｎ１４－１１３４／ｔｈ．２０１９．０２．０６５总第１９０期２０１９年第２期机械管理开发ＭＥＣＨＡＮＩＣＡＬＭＡＮＡＧＥＭＥＮＴＡＮＤＤＥＶＥＬＯＰＭＥＮＴＴｏｔａｌ１９０Ｎｏ．２，２０１９引言防爆高压开关作为煤矿供电系统的配套设备，可以为线路和变压器等供电设备提供主保护，是煤矿井下供电安全的重要设备［１］。

矿用防爆高压开关在机械结构和电气设计上存在缺陷，就会容易产生电气火花，可能会造成火灾爆炸事故。

为保证煤矿的生产安全，亟待对矿用防爆高压开关进行改进。

1现场概况某矿井下采用的防爆电气开关为矿用隔爆型开关和矿用隔爆兼本安型开关。

两种开关主要用于控制电机的启停和保护、各种水泵的启停和保护、井下照明设备、信号控制设备和通讯设备。

检修人员发现部分开关存在机械结构或电气设计方面的缺陷，在２０１７年上半年共出现５起电气事故，由于处理及时没有造成人员伤亡，但损失了有效工时达５０ｈ，不符合煤矿高效、安全生产的目标。

2内部设计缺陷分析及改进２．１开关闭锁结构的缺陷分析及改进该矿在所有电气开关的闭锁杆上开有直径为８ｍｍ的孔，当闭锁杆对隔离开关执行闭锁时，可以通过孔在杆上加装锁具。

采用此种方式既能保证闭锁杆转动，还能保证隔离开关处于闭锁状态没有送电。

如电钳工对设备进行检修或需要进行停电操作时将锁锁上，并将钥匙带走。

在检修完毕需要送电时，再将锁具打开进行送电。

此种设计可以避免无关人员误操作送电，但对于带电开启接线腔结构的开关不适用。

针对闭锁杆上打孔加锁设计的局限性，可以采用分级闭锁开关解决。

将接线腔拆分为相互独立的电源进线腔和负载出线腔。

当出现带电的状态下，任意一个接线腔被打开，闭锁结构迅速动作执行闭锁操作使开关断电。

负载出线腔只对本级开关进行闭锁，而电源进线腔只对上级开关闭锁［２］。

当对设备进行升级时，必须逐步引进分级闭锁开关。

２．２电源变压器改压装置的缺陷分析及改进该矿采用的电源变压器的改压装置由于在设计时没有充分考虑到煤矿井下昏暗的工作环境，电源变压器被开关本体挡住，必须将紧固螺钉松开再将本体拉出才可对变压器进行改压，操作繁琐耗时。

矿用隔爆型低压真空馈电开关的工作原理

三、矿用隔爆型低压真空馈电开关
KBZ20-400/1140（660）矿用隔爆型真空馈电开关
故障
原因
“电源”位时无显示
电源灭有加到保护插件上电源没有加到显示面板上
跳闸试验不动作按合闸按钮不合闸
没有55V电源 J3不吸合
电压显示不正常电流显示不正常
漏电不跳闸
变压器二次侧输出故障电流互感器连线故障
检测回路故障
排除
1.检查矩形插座1、11脚电压为 100V 2.检查变压器输出、输入端电压保险管等 3.将显示板连线插接牢固检查分励电路和FU5熔断器
1.检查合闸线路和保护器 2.检查127V线路 3.检查整流桥是否损坏
1.检修变压器 2.查线
查保护中的滤波板上相关器件
问题：
过电压保护中当电压达到多少时保护动作？
矿用隔爆型低压真空馈电开关的工作原理
KBZ20-400/1140（660）矿用隔爆型真空馈电开关
5）过压保护当电网进线电压Uac>120%额定电压时，过压保护动作，动作时间小于100ms ，精度为±5%。
6）欠压保护当电网进线电压Uac<65%额定电压时，欠压保护延时5s 动作，精度为 ±5%。欠压保护可以整定选择“打开”或“关闭”。
矿用隔爆型低压真空馈电开关的工作原理
KBZ20-400/1140（660）矿用隔爆型真空馈电开关
电源环节：
当手柄打至电源位时，时间继电器SJ 得电常开接点闭合，按下合闸按钮QA 时，继电器J3 吸合，常开接点J3-1～J3-3闭合，断路器KM 的吸合线圈Q1有电，断路器合闸。同时，断路器辅助触点KM-3断开，时间继电器SJ 断电，其触点延时一定时间后断开，继电器J3断电，常开接点J3-1～J3-3打开，线圈Q1不再工作。而保护插件给予指令或按分闸按钮FL 时，断路器脱扣线圈Q2得到55V 电压后，断路器分闸，辅助开关中的常开接点KM-1打开，保证分闸后脱扣线圈Q2不再工作。转换开关有二个挡位：“闭锁”（分闸）、“电源”。“闭锁”位时，变压器无电；“电源”位时，变压器有电，正常情况下液晶显示器上显示“分闸待机”，此时允许断路器合闸；按下合闸按钮 “QA ”断路器合闸，显示器显示“合闸运

矿用低压自动馈电开关

一、结构
喇叭嘴
提升铰链门
接线盒显示窗
闭锁机构
一、结构
电路板
智能保护器
变压器
零序变压器
中间继电器三项电抗器
阻容吸收熔断器
时间继电器
综合保护装置
合闸按钮
分闸按钮
实验开关
电源模块
整定按钮
二、电路组成——由主回路和辅助回路组成
1)主回路
断路器ZD—控制主回路
矿
用
控制变压器BK—提供控制电
三、工作原理1)漏电保护
(2)做总开关
HK2打在““总”，断开LXH而将附加直流电源接到地端，即加到对地绝缘电阻上，实现无选择性的漏电保护。如果主线路发生漏电现象或是任一分支线路漏电时分开关拒动，总开关的检漏回路检测的绝缘电阻小于漏电动作值，总开关会在设定时间内使J1-2闭合，断路器跳闸。
五、常见故障排除
故障现象
检查项目
解决办法
有“吱吱”响
一次保险是否松动拧紧保险
漏电不跳闸
FD是否可靠接地
检查FD
无显示指示灯不亮交流电源线松动否接好电源线
保护误动作
整定值是否对
重新输入整定值
测量不准确
交流输入是否松动接好交流输入线
本节小结
馈电开关类型
作用
隔爆真空自动馈电开关——采用电子综合保护装置
（2）调开关工作方式。如果做分开关时，需具备主漏电保护，将门背面的选择开关打至“分”，如果做总开关时，为后备漏电保护，将开关打至“总”位。
（3）菜单调节。合上HK1，辅助回路电源接通，显示器实时显示电源电压值，电网绝缘电阻值及主回路三相电流值。可通过门上的四个菜单操作按钮进行菜单操作。其中“确认” 按钮，可进入菜单或返回上级菜单；向上“↑”或向下“↓” 为选择按钮，可选择菜单项，所选菜单项高亮显示；“复位” 按钮可以解除闭锁，实现复位。

煤矿井下低压电气设备防爆性能可靠性分析及对策

煤矿井下低压电气设备防爆性能可靠性分析及对策贾艺栋【摘要】举例论述煤矿井下电气设备的现状与存在问题,探讨提高井下低压电气设备防爆性能的对策,希望可以为煤矿井下低压电气设备防爆性能的完善提供参考.【期刊名称】《机械管理开发》【年(卷),期】2016(031)009【总页数】2页(P146-147)【关键词】煤矿井下;低压电气设备;防爆性能;瓦斯爆炸事故【作者】贾艺栋【作者单位】山西汾西矿业(集团)有限责任公司双柳煤矿, 山西柳林033300【正文语种】中文【中图分类】TD684目前，常用的井下防爆电气设备有防爆电机、防爆变压器、防爆开关类设备和防爆灯具。

煤矿井下低压供电系统主要有三种方式：第一种方式的组成部件包括高爆开关、移动变电站、馈电开关或者检漏继电器、磁力启动器、煤电钻综保和照明综保，主要应用于普采工作面；第二种方式由高爆开关、移动变电站、具有漏电保护的馈电开关、磁力启动器和组合开关组成，经常在综采工作面中使用；第三种方式由高爆开关、移动变电站和负荷中心组合而成，主要应用于高产高效矿井。

虽然《煤矿安全规程》中对煤炭的安全生产制定了一系列安全规定[1]，煤矿企业也都普遍使用井下低压电气设备以降低瓦斯爆炸的危害，但在实际的井下煤炭开采过程中还存在许多问题。

一般情况下，煤矿开采不仅要预防爆炸和火灾，还要使用电气设备来防止发生水害，如某煤矿企业的运顺水仓泵出现故障，摩擦出的火花点燃了瓦斯，导致瓦斯爆炸的发生，造成了无法弥补的生命财产损失，由此可见，防止瓦斯事故必须保证煤矿作业电气的安全质量。

例如：1991年，山西怀仁县王卞庄煤矿因为矿灯失爆擦出了火花，导致瓦斯爆炸；1997年，义马矿务局耿庄村矿发生瓦斯爆炸的原因是停电处理不当；1999年，河南平顶山韩庄局二矿因为停电通风机停止了运转，井下聚集的瓦斯过多，来电之后发生了爆炸事故。

要保证井下安全，防爆电器的质量必须合格，应该选用不传爆的耐燃材料作为防爆电气设备的外壳，但是很多煤矿企业为了一己之私购买了劣质防爆电气设备，不能有效防止瓦斯爆炸事故。

浅析煤矿井下低压馈电开关漏电保护技术

浅析煤矿井下低压馈电开关漏电保护技术摘要：煤矿井下在作业时，会使用到大量的电力设备。

但是这些设备在井下作业中的应用，会受到空气、环境等各种不同因素的影响，导致自身很容易出现故障，特别是井下的环境相对比较潮湿，很容易引发漏电问题。

本文针对煤矿井下低压馈电开关漏电保护技术的具体应用情况进行分析，为漏电故障问题提供有效的控制措施。

关键词：煤矿井下;低压馈电;开关漏电;保护技术在针对煤矿资源进行开采的时候，不可避免的会进入到煤矿井下进行作业。

由于煤矿开采的环境比较恶劣，虽然在开采过程中，会使用一些具有一定安全系数和稳定性的低压馈电技术。

但是在这些技术的具体应用过程中，由于电力设备等一些精密仪器在实际应用过程中，很容易受到井下一些因素的影响，比如空气的潮湿、酸碱等因素，导致这些精密仪器本身很容易出现故障问题。

在众多的故障问题当中，最具有危险性的故障就是漏电，由于井下作业的空间也比较小，环境也比较恶劣，所以一旦出现漏电现象，不仅会导致井下作业人员自人身安全受到严重威胁，而且严重的情况下，还有可能会引发严重的爆炸事故。

1 煤矿井下低压馈电保护分类煤矿资源一直以来都是现代人在日常生活过程中非常重要的能源之一，同时煤矿资源对很多行业的发展，也具有不可替代的影响和作用。

特别是近年来，社会的快速发展，对煤矿资源的整体需求也在不断增加，在这种背景下，要结合实际情况，适当加大对煤矿资源的开采力度。

但是需要注意的一点就是，由于煤矿井下作业具有一定的危险性，同时井下环境比较恶劣，一旦出现安全事故，将会造成严重的损失，同时还会出现严重的人员伤亡事故。

所以在这种背景下，要结合实际情况，尽可能避免出现各种不同类型的故障问题[1]。

在具體操作操作过程中，要针对漏电问题进行有针对性的分析，这样才能够保证井下作业的安全性和稳定性。

一般情况下，在煤矿井下低压馈电开关的实际应用过程中，集中和分散这两种不同类型的方式，是主要的开关保护方式。

漏电保护在具体实施过程中，如果具有一定的集中性特征，那么在具体操作过程中，其可以直接利用单相地接的方式，这样可以在漏电的时候，直接产生出相对应的保护动作。

煤矿井下低压供电系统漏电故障分析与解决方案

煤矿井下低压供电系统漏电故障分析与解决方案作者：马淑波来源：《中国化工贸易·中旬刊》2019年第04期摘要：对于煤矿井下供电系统而言，漏电保护是一项非常关键的内容，它会对煤矿的安全生产造成直接的影响，如果煤矿井下低压供电系统出现漏电故障，非常容易引发严重的安全事故，对相关工作人员的人身安全产生威胁，因此，本文对其中的漏电故障问题进行讨论，并对解决低压供电系统漏电故障问题的具体措施展开论述。

关键词：煤矿井下;低压供电系统;漏电故障分析;解决方案由于煤矿井下作业环境较为恶劣，矿井当中会有很多易燃易爆气体存在，因此，对矿井的安全生产工作进行强化具有非常重要的意义，而漏电保护是实现矿井安全生产的重要条件之一，对其进行有效的落实，能够使矿井安全得到很好的保证。

但在日常工作当中，很多井下设备或线路在出现故障问题时，都可能会造成矿井供电事故，特别是在碰撞或挤压的情况下，运行期间的电缆和电气设备容易产生漏电故障，而一旦漏电，就可能会有火花形成，这些火花在遇到瓦斯、甲烷等气体时，就会产生爆炸事故，在威胁工作人员安全的同时，影响煤矿井下的正常生产，因此，必须要对解决低压系统漏电问题的措施进行深入的研究。

1 低压供电系统漏电动作原理及相关保护方式1.1 漏电动作的主要原理当前阶段，低压供电系统当中的KBZ馈电开关漏电保护装置都是以基尔霍夫电流定律为基础设计的，而低压馈电总开关主要应用附加直流电源检测式漏电保护，具体是从智能综合保护端对一直流电压U进行输出，且正极连接大地，负极会从三项电抗器SK以及零序电抗器EK经过，从而汇入三相电网当中，在此过程中，直流电流能够利用电网当中的对地绝缘电阻R构成一通路。

利用系统智能综合保护作用能够实现线路绝缘情况的实时监测，如果线路绝缘值低于规定值，说明线路出现漏电故障，会對跳闸动作加以执行，在比馈电总开关规定值低的情况下，还可以进行绝缘低闭锁动作的执行，能够对矿井工作人员以及相关供电设备的安全加以保证。

BXB3-800.1140矿用隔爆型低压保护箱说明书

BXB3－800/1140 矿用隔爆型低压保护箱使用说明书执行标准：Q/BD32－2004八达电气有限公司BXB3－800（1200）/1140矿用隔爆型低压保护箱1、用途及使用条件该保护箱为50Hz，额定电压1140V或660V，额定电流：主回路为800A（1200A）；分为两个支路，每个支路为400A（600A）。

该保护箱与BGP46－6(10)矿用隔爆型高压真空配电装置（以下简称高压开关）配套作为煤矿井下移动变电站的低压保护装置，在低压电气故障时控制高压开关分闸。

该保护箱具有：低压漏电闭锁、漏电跳闸、短路、过载、过压等保护功能。

其保护器采用了先进的智能型电子保护，工作可靠，技术先进。

当与BKD20馈电分开关组成配电系统时，具有纵向、横向性漏电保护功能，实施保护时通过与高压开关相连的4芯控制线完成。

正常工作时本机可显示：电源电压、工作电流等；故障时显示故障类型和参数并闭锁高压开关，只有解除故障并人工复位后高压开关才能合闸。

使用环境条件1.3.1、海拔高度不超过1000m；1.3.2、周围环境温度不高于40℃，不低于-5℃；1.3.3、周围环境相对温度不大于95%（+25℃）；1.3.4、在无强烈颠簸震动的地方；1.3.5、在无滴水和水侵入的地方；1.3.6、安装位置与垂直面得倾斜不大于15°；1.3.7、在无足以破坏金属和绝缘的腐蚀性及蒸汽的场所；1.3.8、污染等级：3级；1.3.9、安装类别：Ⅲ类。

2、主要技术参数、额定工作电压：1140V（660V）、额定工作电流：主回路：800A（1200A）分支回路：400A（600A）两路、短路整定电流值：每个支路的整定电流为30～400A（600A）(分档精度为10A)，短路电流整定倍数：为整定电流值的3～10倍。

②660V （单相）：11KΩ+20%漏电闭锁动作电阻值：①1140V：40KΩ（+20%）②660V：22KΩ（+20%）3、保护整定方法保护插件盒的外面装有电流整定值的拨码，根据每个支路的负荷电流对两个支路整定，如图：第1位数字3为短路电流倍数（可以在3～10倍范围内调定，其中“0”为10倍），第二位（整定电流的百位数）第3位（整定电流的十位数）为第1支路的电流整定值；第4位（整定电流的百位数）第5位（整定电流的十位数）为第2支路的电流定值。

矿用防爆型低压交流真空开关检修工序及标准

开关检修工序1．打开接线腔端盖，检查接线柱螺丝是否齐全，螺栓是否变型，接线柱底座是否有裂纹。

2．把隔离手把打在零位置，打开主腔。

3．检查零部件是否完好齐全，检查变压器、接触器或继电器线圈、电压（电流）互感器是否烧毁，隔离开关外壳是否有裂痕，触头是否有被电弧烧过的痕迹，导线是否齐全。

4．通电，进一步对开关进行电气功能检修。

5．通电检修时，各部件动作灵敏，试验动作灵敏可靠，符合厂家规定。

6．检查真空接触器的同步性。

7．检查变压器和各种接触器或继电器的线圈温度是否正常。

8．检查开关的显示是否正常。

9．检查开关的接地螺丝，是否符合开关检修标准。

10．用万用表测量负荷侧电压。

11．开关接上电动机，进行带载试验，试验时间不得小于2小时。

12．配齐开关接线喇叭口的铁堵、铁圈、胶圈。

13．隔爆面如不符合防爆规定，须用砂纸打磨后磷化。

14．清除开关外壳煤渣，用破布擦干净外壳，外壳涂油漆。

15．检修完毕，须经过验收员验收合格后方能入设备完好库。

防爆开关检修工艺及完好标准一、外壳1、开关外壳无变形，放在平地上，底座平稳，外壳应与地面垂直。

2、外壳应干净，无油渍和煤尘，如有锈迹应涂防锈漆，观察孔玻璃完好、清晰。

3、隔爆面和外壳应符合防爆规程。

4、开关操作手柄闭合和断开位置有清晰的指示标志和定位5、开关的接线喇叭口，档板、档圈、胶圈，应符合防爆规程。

6、机械联锁结构完好可靠，必须保证开关处于断开状态，主腔才能打开，主腔打开后以正常的方式不能使开关闭合。

7、接线盒和主腔内有进水、锈迹和弧光烧灼的现象，都必须均匀的涂耐弧漆。

8、开关内部电源侧应设置有“带电危险”警示标志的绝缘隔离盖板，隔离盖板完整、可靠。

二、紧固件1、螺纹连接件和锁紧件必须齐全、牢固可靠。

螺栓头部和螺母不得有铲伤、棱角严重变形。

螺孔乱扣、滑扣时，允许扩孔，增大螺栓直径，但不能因扩孔而影响被扩工件的机械强度和工作性能。

2、螺母必须拧紧，拧紧后螺栓的螺纹应露出螺母1～3个螺距，不得在螺母下加多余的垫圈来减少螺栓露出长度。

2024年煤矿防爆开关的使用与维修方法(三篇)

2024年煤矿防爆开关的使用与维修方法防爆电机是一种可以在易燃易爆厂所使用的一种电机,运行时不产生电火花。

防爆电机主要用于煤矿、石油天然气、石油化工和化学工业。

此外，在纺织、冶金、城市煤气、交通、粮油加工、造纸、医药等部门也被广泛应用。

防爆电机作为主要的动力设备，通常用于驱动泵、风机、压缩机和其他传动机械。

随着科技、生产的发展，存在爆炸危险的场所也在不断增加。

例如，食用油生产过去是用传统的压榨法工艺，20世纪70年代以后，我国开始引进国外先进的浸出油工艺，但此工艺中要使用含有己烷的化学溶剂，己烷是易燃易爆物质；因此浸出油车间就成了爆炸危险场所，需要使用防爆电机和其他防爆电气产品。

又如，近年来我国公路发展迅速，一大批燃油加油站出现，也给防爆电机提供了新的市场。

产品分类1．按电机原理分可分为防爆异步电机、防爆同步电机及防爆直流电机等。

2．按使用场所分可分为煤矿井下用防爆电机及工厂用防爆电机。

3．按防爆原理分可分为隔爆型电机、增安型电机、正压型电机、无火花型电机及粉尘防爆电机等。

4．按配套的主机分可分为煤矿运输机用防爆电机、煤矿绞车用防爆电机、装岩机用防爆电机、煤矿局部扇风机用防爆电机、阀门用防爆电机、风机用防爆电机、船用防爆电机、起重冶金用防爆电机及加氢装置配套用增安型无刷励磁同步电机等。

此外，还可以按额定电压、效率等技术指标来分，如高压防爆电机、高效防爆电机、高转差率防爆电机及高起动转矩防爆电机等。

本文按防爆原理分类介绍。

产品系列及其特点1．隔熄型电机它采用隔爆外壳把可能产生火花、电弧和危险温度的电气部分与周围的爆炸性气体混合物隔开。

但是，这种外壳并非是密封的，周围的爆炸性气体混合物可以通过外壳的各部分接合面间隙进入电机内部。

当与外壳内的火花、电弧、危险高温等引燃源接触时就可能发生爆炸，这时电机的隔爆外壳不仅不会损坏或变形，而且爆炸火焰或炽热气体通过接合面间隙传出时，也不能引燃周围的爆炸性气体混合物。

浅析煤矿井下低压馈电开关漏电保护技术

浅析煤矿井下低压馈电开关漏电保护技术【摘要】煤矿井下低压馈电开关漏电保护技术是保障矿山生产安全的重要技术之一。

本文从煤矿井下低压馈电系统概述、开关漏电原理、保护技术实现方法、应用案例和优势等方面进行了深入分析。

通过介绍该技术的重要性和未来发展，展示了其在煤矿安全生产中的关键作用。

煤矿井下低压馈电开关漏电保护技术的不断完善与创新将有效提高矿山设备的安全性和可靠性，为煤矿生产提供更加可靠的保障。

结合实际案例和技术原理，本文深入浅出地介绍了该技术的应用与优势，为煤矿行业相关工作者提供了实用的指导和参考。

【关键词】煤矿井下低压馈电开关漏电保护技术、煤矿、井下、低压、馈电、开关、漏电、保护、技术、概述、原理、实现方法、应用案例、优势、重要性、未来发展。

1. 引言1.1 煤矿井下低压馈电开关漏电保护技术介绍随着煤矿井下电力设备的不断更新和升级，煤矿井下低压馈电开关漏电保护技术也得到了越来越多的关注和应用。

作为煤矿井下电力系统的重要组成部分，低压馈电开关漏电保护技术在煤矿生产中起着至关重要的作用。

煤矿井下低压馈电开关漏电保护技术是指通过对电路中的漏电进行监测和检测，及时发现漏电故障并隔离故障部位，保护设备和人身安全的一种技术手段。

在煤矿井下环境复杂、作业条件恶劣的特点下，低压馈电系统存在着漏电的风险，因此开展漏电保护技术显得尤为重要。

通过对煤矿井下低压馈电开关漏电保护技术的介绍和分析，可以更好地了解该技术的原理和实现方法，以及在实际应用中的优势和重要性。

展望未来，煤矿井下低压馈电开关漏电保护技术还将不断创新和完善，为煤矿生产安全和稳定提供更加可靠的保障。

2. 正文2.1 煤矿井下低压馈电系统概述煤矿井下低压馈电系统是指煤矿井下用于供电和配电的电力系统，包括煤矿井下的输电线路、变电站、配电装置等。

煤矿井下低压馈电系统通常采用380V为额定工作电压，用于给井下设备供电。

这些设备包括采煤机、通风设备、水泵等，是煤矿生产中必不可少的部分。

2019年常用防爆开关电气原理图及故障处理.doc

综掘工作面防爆开关电气原理图及常见故障处理目录一、KBZ-200/1140 660 II矿用隔爆型真空馈电开关 (2)二、KBZ-400 /1140II矿用隔爆型真空馈电开关 (3)三、KBZ─500/1140II KBZ─630/1140II 矿用隔爆型真空馈电开关 (5)四、QBZ─30、60/660（380）N矿用隔爆型可逆真空电磁起动器 (6)五、QBZ2─30、60 矿用隔爆型真空电磁起动器 (9)六、QBZ2─80、120、200矿用隔爆型真空电磁起动器 (10)七、QBZ（BQD）─80、120、200/1140（660）D矿用隔爆型真空电磁起动器 (13)八、QJZ-200.300.400/1140（660）Ⅱ矿用隔爆兼本质安全型真空电磁起动器 (14)九、QJR系列矿用隔爆兼本质安全型交流真空软起动器 (16)十、ZBZ-4（2.0）M矿用隔爆型照明信号综合保护装置 (18)一、KBZ-200/1140 660 II矿用隔爆型真空馈电开关和你KBZ-400 /1140II 矿用隔爆型真空馈电开关电气原理接线图故障分析与排除KBZ-400 /1140II矿用隔爆型真空馈电开关电气原理图三、KBZ─500/1140II KBZ─630/1140II 矿用隔爆型真空馈电开关KBZ─500/1140II KBZ─630/1140II 矿用隔爆型真空馈电开关电气原理图四、QBZ─30、60/660（380）N矿用隔爆型可逆真空电磁起动器QBZ─30、60/660（380）N矿用隔爆型可逆真空电磁起动器电气原理图QBZ─30、60/660（380）N矿用隔爆型可逆真空电磁起动器接线图五、QBZ2─30、60 矿用隔爆型真空电磁起动器QBZ2─30、60 矿用隔爆型真空电磁起动器电气原理图六、QBZ2─80、120、200矿用隔爆型真空电磁起动器QBZ2─80、120、200矿用隔爆型真空电磁起动器电气原理图QBZ2─80、120、200矿用隔爆型真空电磁起动器接线图七、QBZ（BQD）─80、120、200/1140（660）D矿用隔爆型真空电磁起动器QBZ─80、120、200/1140（660）D矿用隔爆型真空电磁起动器电气原理图八、QJZ-200.300.400/1140（660）Ⅱ矿用隔爆兼本质安全型真空电磁起动器QJZ-200.300.400/1140（660）Ⅱ矿用隔爆兼本质安全型真空电磁起动器电气原理图九、QJR系列矿用隔爆兼本质安全型交流真空软起动器QJR系列矿用隔爆兼本质安全型交流真空软起动器接线图QJR系列矿用隔爆兼本质安全型交流真空软起动器电气原理图十、ZBZ-4（2.0）M矿用隔爆型照明信号综合保护装置ZBZ-4（2.0）M矿用隔爆型照明信号综合保护装置电气原理图（英文版）easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the < code > and < rule >, lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management , strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the masses reflect the concentration of the units and departments for supervision. - strengthening supervision, discipline inspection and supervision of cadres to set an example for compliance with the < code > and < rule > is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection organs as the executor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji Ordinance to set an example of theregulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do comply with < > and < >. To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of "concept, and consciously safeguard and implement party compasses party, take the lead in practicing" three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the < code > as morality, politics and brought to fruition; to implement < >, do not want to, dare not, not with disciplinary ruler to supervision; to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the table in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not know, this is the life teach us things. 1, life can be complex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Becomemore perfect. Life is the most important thing is not to win, but the struggle; not to have conquered, but to have fought well. 2, the plain is the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers; not disillusioned after the heart, such as ashes, but experience the storm after the enlightenment; not unrewarding perfunctorily, but calm attitude of life of unrestrained self-confidence. Plain living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Give up this giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrow-minded, too care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, completely depends on how we look at and deal with it. Don't always take everything back to things, and don't get into a blind alley, don't want to face, don't be narrow-minded. Poke to care, is a kind ofopen-minded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people; I am not afraid of the truth to tell the best friend, I'm afraid he turned to it as a joke to tell don't 6, when we are in a positive frame of mind, you will find many good things; and when we are in a negative state of mind, you will find many depressed things; life happy and worry, all is you of life attitude, optimistic, good luck; loss of sink, Eritrea company. When you are in adversity, may wish to change a point of view to think everything over to the good Think, because good mentality decided the fate of the! 7, people are tired, rest; heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is your own; you pain, no one can understand. Then you only tears to smile. 8, each people have youth,Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same; now want anything, for fear that others know, or like to lose the same. 9, the heart move, everything in the world is followed by birth, Rangrang, important thing is often the most difficult to open one's mouth, because words will reduce itsimportance; to let strangers people care about your life in the good things, the original is not easy 10, do not blame, do not laugh at who, also don't envy who. Like a person is a kind of feeling, not like a person is true. The truth is easy to explain, I feel Is unspeakable. The best travel life is that you in a strange place found a long lost touched. 11, happy life not in the bustling in, and in the peace of mind; no matter how many grievances, how uncomfortable, and ultimately to heal themselves or their own, others may got you to comfort, but never know your heart is how wanjianchuanxin. 12, ma'am, like a movie, learn to appreciate, learn to be grateful, learn tolerance, and goodness, helping others. Instead of accusing the society, as into one; and an exception is better to give than to what 13, don't envy him A sum of, don't lose your life and the life, respectively is: the former is a we experienced cannot escape in a day finally will last minute, while the latter is our persistent, we want to cherish the memory of those people and things. 14, learn to smile, learn to strong, the world you know so many people, so many people and you are, you cannot change also can't let everyone like you, so also do not want to do. Life is too short to go crazy to love to go to waste, to chase the dream to regret. 15, when temper, a blessing togo. A wounding elegant people, the key is to control their own emotions. With the mouth is the most stupid behavior. A control negative emotions than a can take a city more powerful water flow slow, language is expensive. People spent two years of time to learn to speak, but to spend a few years time to shut up. That is a kind of ability, that is a kind of wisdom. 16, life is not perfect, sometimes, growth is not a cry, not an eyeful of tears, there is no trace of emotion, there is no gleam of hope, no desire, no action, no static, there is only one kind of downward sinking feeling, sink A murky? 6? 7? 6? 7 sink? 6? 7? 6? 7 toward the bottom of the sink. 17, in some way, do not go, you will not know the other side scenery is beautiful. To you is not good, you do not mind too much, no one has an obligation to you; you learn knowledge, is you have weapons, you can start from scratch, but not unarmed; how do you treat people, does not represent how others treat you, if cannot see through this point, only inviting worry. 18, time is like a sponge in the water, as long as you are willing to squeeze, the total water is still there. Every life, after the ups and downs The best test of live, to life, survival and continuation, do not stop the struggle in the joys and sorrows of life on the road, so that different soul to bear life beat, acceptance ofsuffering. 19, indifferent to heart, calmly in table, elegant and comfortable life, do not take what is so important. The pursuit will be disappointed; to be alive, you will have trouble. Life is the most afraid of what all want to care about, but also what all grasp is not firm, without scenery, separated populations, such as not to desire, all docked in the fate of the end. Why is too rigid, the natural, to go stay not to live, let go of obsession, revel is 20, if the fate of the broken Hopes of sailing, please don't despair, the coast is still, if the fate of the withered petals of the beautiful, please do not sink, the spring is still, life will always be endless trouble, please don't helpless, because they are still alive, is still a dream, the sun still, we still. Lost, keep memories; to get, must work to; but the most important is good to cherish their own. 21, life, select the complex, is to choose the pain; choose a simple, is choose to be happy. The complex world like aSignificance of pride. Hope is the ornate palace, outside people admiring the magnificent, living in the deep knowledge of living it to pay the price. Simple world as a simple log cabin outside ridiculed shabby, the heart is willing to go live to know the joy. Suffering and joy is their own choice. 22, learn how to use a single powerful heart, let the past be the past,let the future come. Life is really the end of the end of an eagle is flying wings, life is constantly pursuit. Don't miss to regret, don't wait for old just miss. Time to return, seize every moment, again painstakingly again tired also Those struggling to fly. 23, life could not Yimapingchuan, even flat pavement, inevitably there will be a few pieces of roadblocks. Some of the rocks around the past, while others have to move it out. Just move others put the stone is very easy, because the stone from the appearance we can discern; difficult to myself to move away the heart of stone head. Leave time to spend with her, often reflect my heart, so as to remove your heart of stone. 24, everything does not have to be demanding, come to, everything does not have to care about, over the past; failing to do not frown, laugh it laugh. Results Don't demand, do to; life is a simple, calm and peaceful. Always not to choose their own path and regret, life is like a train, the scenery and then the United States will retreat, the passage of time and encounter will eventually drifting further and further away, before is always himself. 25, everyone has a weakness, weakness is true humanity. That has no weakness, a shallow person. That people think there is no weakness, mostly false. Life has shortcomings, there are shortcomings is the real life. That noone regret, or childish or numbness or Self deception. It is in tolerance of weakness and so on to accept, people live happily.Hello, everyone! I am a party member. The title of my speech is: < study and implement the party's two laws, doing practical play highway. 2015 October 18, the Central Committee of the Communist Party of China promulgated the implementation of the < the probity of the Communist Party of China self-discipline criterion > and < Chinese Communist Party discipline and punishment regulations. We Heyuan male passers-by to respond positively to the call of the Central Committee of the party, earnestly organize the study "party two regulations", truly grasp the essence and gist, and in their respective positions, to hold the bottom line of the discipline, build a strong ideological line of defense, with the courage to play, the courage to fight tough and fearless spirit, at the crucial moment well to complete the task, with practical action to test the study and implement effect Because of discipline in the * * * * * * * * * * * story. Here, let me to cast a brick to attract jade, speak about our highway. Highway line section of the road surface transformation project, last year "towards the countryseized" will be seized one of the items. To complete this arduous task, as a project management office director Comrade, keep in mind from the Communist Party membership, recognize and identify the "bottom line", strict management, and strict adherence to the quality of the project. He not only set an example, honesty and self-discipline, but also requires the management of all the members of the O.K., do not eat the construction unit one meal, do not accept the construction unit a ceremony. In this way, they didn't really dare to adhere to the principle. No comrade, constantly put on reworking an emergency meeting to Comrade Zhen to speak louder, management tube too strict. Remember in Dongguan Street, 400 meters long cement concrete surface layer, because of various reasons, the smoothness of the poor in the bottom cavity, covering film traces and car imprinting quality problems, * * * inquiries, immediately rushed to the scene to understand and verify the situation, the convening of the management office, the construction units, supervision units, construction units, construction units construction time is tight, the economic loss and other reasons to intercede ******** unmoved. He said, "now a popular word, to the discipline and rules quite in front, there are no rules Radius, you construction team not accordancewith the technical specifications, quality problems, it must be to carry out rectification. Engineering quality responsibility be weightier than Mount Tai, if we manage to this matterPavement quality quantity are placed the matter, we this time to learn two regulations have what use? Still what is the Communist Party? "Finally, in his insisted, the road after rework, to solve these problems. In the construction of the new comrades and the project all the colleagues efforts, after four months of fighting, the project the main project was finally completed and passed inspection. Thousands of miles of ice, thousands of miles Piao, this is a splendid and romantic scene. But snow for the highway, it is a disaster, a serious threat to the traffic safety. This year, a month, a century of cold wave swept from North to south, and the snow blowing to Guangdong, but also to bear the blow To * * * * the highway. In January on the evening of 23, Lianping county city temperatures dropped to minus 2 degrees, a wide range of sudden rain sleet, before and after the provincial S341 line in Jiulianshan Mountain tunnel sections of the road appeared in the snow, lead to the passing vehicles skid, traffic is blocked. In the face of the sudden natural disasters, city and countyhighway department immediately launched the emergency plan for disaster prevention. As the front line of the main force, Lianping Highway Bureau of all Party members and cadres to remember the Party member responsibility, braving the biting cold wind, the first time rushed to the scene, on the icy pavement of salt disposal. Because the temperature is too low, just melt water immediately freezes, addition to the ice work to increase the difficulty. To ensure In addition to the re organization of the depths of the traffic safety, road people braved the icy put reflective cones and warning signs, endure cold at minus 2,3 of Jiulianshan patrols until one in the morning. Just before dawn, Lianping Highway Bureau personnel on the icy road salt ice melting processing until ten o'clock, ice melting ice success, the road gradually returned to normal traffic. In the cold winter night, which people do not miss the warm bed, which people do not miss the warm home. However, our highway on the road to the owners of the masses can go home early, the night fighting to secure the avoidance of the road safety and smoothness, fulfill their responsibility. Xi General Secretary Every Party member cadre cautioned against said: blacksmith needs self hard "." two regulations ", is our own hard standard test, more exercise every party members andcadres of the fire. We should continue to strengthen the party two regulations, conscientiously in practical work, practical play road, the road for the development of the cause of Heyuan and struggle.In the industry domain report the situation of road traffic in recent years, in the province highway departments of the concern and support, our bureau management department based on the job, loyalty duty, best service, to further promote the highway management standardization, legal, scientific and information technology to improve the management level and service quality. This will be my last work is as follows: first, around the center, go all out to greet the seizure in 2015, "meet national examination" is my bureau work. As the highway management department, we focus on the work of the center to strengthen road renovation and management as the focal point, further optimize the service environment, improve service levels. Inspection, the inspection group and the Ministry of transport, the Bureau under the leadership of the ministries and agencies highly evaluated and fully affirmed. (a) increase road area remediation efforts. The programme of work, strengthen the organization and leadership. The timelydevelopment of the city of <*** common trunk highway area environment remediation plan >, along the road signs and markings, traffic safety facilities, on both sides of the green, advertising signs, control area illegal construction and implementation of remediation tasks to the relevant departments, clear work time of the node to ensure rectification work timely. Set up road area special rectification work leading group, implement a bureau, the Bureau of the county (District), the project road site domain environment comprehensive improvement Mechanism. To ensure that the work carried out smoothly, the bureau also organized the city road managers participated in the regulation of road region and the relevant laws and regulations of the special training. 2. Active butt joint is reported, actively strive for the support of. Local Party committee and government support is the jobAs a magic weapon, I am one of the Bureau of the principal leaders repeatedly attack inspection "remediation and road area to the principal leaders of the municipal report. * * *, the Secretary of municipal Party committee, mayor * *, * * *, vice mayor of many times the rate of the relevant departments directly under the responsible person in-depth NationalHighway G105 line, G205 line, provincial S341 line and the other highway project site, on-site office, coordination solve engineering construction and environmental comprehensive renovation in the presence of difficulties and problems. Last year, national highway along the county (District) government led organizations deploy traffic, urban management, public security, land, environmental protection, industry and commerce, highways and other related departments, to carry out to dismantle illegal construction and ground structures, cleaning up illegal standard Records label "as the main content of the road domain integrated environmental remediation activities and achieved good results. 3. Pay attention to comprehensive management, improve the effectiveness of remediation. Road construction control management has been strengthened. According to the relevant provisions of the laws and regulations of the < Highway Law > and < highway safety regulations for the protection of > and so on, county * *, * * County People's Government on highway construction control area were delineated and issue a public notice, * * County People's government also approved by the executive meeting of the government through discussion, implementation of road boundary markers of 73 million yuan of special funds input,stake setting. According to statistics, last year the city has erected building control zone peg 820, construction control area boundary markers 815 . the second is highway greening and beautification work enhance the road area remediation effectiveness. Will highway greening and beautification work as road area remediation of a key, invite garden experts to guide the design of green, the implementation of high standards for ecological landscape highway activities to create, five years, I board greening mileage of more than 900 kilometers, appropriate road greening greening rate of 100%, effectively enhance the city road greening level and grade, adds a sharp scenery line for **********. Third, rectification of illegal construction and occupation of the road has been checked. By through the town, crossing the road on many occasions to carry out concentrated rectification actions, to clear the remnants of the wall, broken Archives of highways in strict accordance with the wall of building structures and the illegal deposits, remediation along the Jeeves, Jeeves placed advertisements and vehicle maintenance, car washing and other acts, standardize and purification on both sides of the highway billboards and other non road signs, I city of national and provincial highway basic elimination of the "dirty, chaotic, poor, blockingphenomenon, highway traffic environment purification, landscaping. (2) to strengthen the management on the basic data management. The level of the archives management regulations, formulate the < file management system >, the establishment of the road, the implementation of the file manager, file collection, filing, sorting, filing, confidentiality, custody, borrow, identification pin Destroy the standardization. 2, standardized management, enhance service image (a) evaluation system to further improve in order to strengthen and standardize guidance and assessment of each county (area) bureau of highways management work, the Bureau developed a <*** City Highway Bureau highways management assessment implementation measures (Trial). To regularly check for half a year, year-end assessment and irregular random sampling combined, taking the spot road inspections, sampling sections, listening to the reports, archives data check, for each county (area) bureau of highways management work implementation of the special assessment. According to the annual comprehensive assessment appraisal score results, evaluation of outstanding, excellent compliance and Not up to the standard of four grades. And in accordance with the level of assessment, the award on behalf of dial highway management funds. Total score is above95%, is excellent, 10 million yuan reward; total score of 90 - 94 for excellent, 8 million yuan reward; for the total score of 80 - 89 points for standard, reward 50000 yuan. On the total score is less than 79 points for non-compliance unit, circulate a notice of criticism. (II) Sheung inspection work to further standardize a is in place to ensure the inspection. National and provincial trunk highway patrol monthly not less than 20 days, State Road a week of not less than 3 times, dart a week of not less than 2 times. The second is to explore and promote the electronic patrol monitoring.City highway patrol vehicles are installed on the highway patrol vehicle monitoring system; highway law enforcement personnel are equipped with a recorder for law enforcement, on the process of supervision and law enforcement to ensure evidence has played an effective role. The third is unified and standardized inspection ledger records, inspection equipment use and management of the electronic Patrol information storage utilization. The fourth is the establishment of highway maintenance and inspections mechanism. The city's 19 country and provincial trunk highway maintenance center equipped with the CPPCC keeper, and to develop a road of the Chinese people's Political Consultative Conference tube memberresponsibilities. According to statistics, in 2015 (on the road. Day.... Stop the road mileage, 17 cases; clean up debris on both sides of the road 20 , demolition billboard 30, demolition chaotic scaffolding house 3, clean Lane Hawking 15.) (3) road permit work to further strengthen the implementation of administrative licensing system, strengthen the supervision and administration of the licensing. Strict implementation of the < Guangdong Province highways license implementation measures >. According to the provisions of the road approval procedures and processes to carry out road license, do according to the law, the license in accordance with the law, shall be subject to examination and approval of the. Implement the collective examination and approval, to strengthen supervision. Highways and approval of business implementation of technical review of administrative approval and separation, the audit focused on the more complex involved in the road licensing matters, collective decision-making, to improve the scientific nature of the road administrative examination and approval, reduce approval corruption risks. Second is to promote the In administrative permission of information technology to improve service quality. According to the <*** Provincial People's Government Office on Issuing 2014 improveand expand the spirit of the relevant documents of the online business hall of program of work notice > and ministries and provincial and municipal government, I realized the butt of Guangdong Province highway information network and provincial network business hall * * * branch office highways licensing examination and approval work. Simplify the licensing process, and strengthen the office system, optimize the quality of service. (4) image of the team to further enhance a is grasp Windows image.2015 years, my bureau highways licensing in the city administrative service center settings window service. According to the <** provincial highway The provisions of the administrative licensing service window management way > and < on regulating the content of the public notice >, I Bureau for damaged highway capacity compensation standard, occupied by highway repair (lost) compensation expenses standards, in accordance with the law of administrative licensing items, the communications administrative license implementation procedures into the line on the wall publicity, in the service window is equipped with all kinds of application fill in sample, administrative licensing service guide brochure, in a conspicuous place public commitment to the system and advisory telephone complaints, for the masses provides warm and。

矿用低压配电箱的原理

矿用低压配电箱的原理矿用低压配电箱是矿山生产中用来进行电能分配和控制的设备。

它的工作原理是将高压输电线路传输过来的电能通过变压器转换成低压电能，然后再通过配电箱进行分配和控制，供给矿山内各个设备和电气设施使用。

矿用低压配电箱主要由进线柜、配电柜、电能仪表、断路器、接触器、继电器、液晶显示屏等组成。

进线柜是将输电线路上的高压电能通过变压器转换成低压电能的设备，其主要作用是将高压电能分接到变压器上，并进行相间及相与保护。

配电柜则是将通过变压器转换后的低压电能进行进一步的分配和控制，它可以根据矿山内各种设备的用电需求进行合理的分配，保证电能供给的平衡和安全可靠。

电能仪表是用来检测和记录电能使用情况的设备，通过它可以实时监测矿山内各个设备的用电情况，及时发现异常情况并进行处理。

断路器、接触器、继电器等设备则是用来对电路进行保护和控制的，它们可以在电路出现短路、过载等故障时进行及时的断开，并保护设备和人员的安全。

液晶显示屏则是用来显示和监控配电箱内部各种参数和工作状态的设备，通过它可以清晰地了解配电箱的运行情况，以便及时进行调整和处理。

矿用低压配电箱的工作原理主要包括电能转换、分配和控制三个方面。

首先，进线柜将高压输电线路上传输过来的电能通过变压器进行降压，转换成矿用设备所需的低压电能。

这样就可以保证矿山内的设备和电气设施得到安全可靠的供电。

然后，配电柜将转换后的低压电能进行合理的分配，根据各个设备的用电需求进行动态调整，以保证各个设备的用电均衡和供能安全。

最后，配电箱内的断路器、接触器、继电器等设备对电路进行保护和控制，一旦电路出现故障，它们可以及时进行断开，以保证设备和人员的安全。

总的来说，矿用低压配电箱的工作原理是通过将输电线路上的高压电能转换成低压电能，再进行合理的分配和控制，从而保证矿山内各个设备和电气设施的安全供能。

它在矿山生产中起着至关重要的作用，是矿山电气系统中不可或缺的设备。

煤矿防爆开关的使用与维修方法范文（二篇）

煤矿防爆开关的使用与维修方法范文煤矿作为一种高危环境下的产业，对于安全管理措施要求极高。

煤矿防爆开关作为煤矿安全生产中的重要组成部分，其使用和维修方法的规范性将直接影响到煤矿生产的安全性和高效性。

本文将介绍煤矿防爆开关的使用与维修方法，以期提高煤矿防爆开关的使用效果和安全性。

一、煤矿防爆开关的使用方法1. 首先，使用者应熟悉煤矿防爆开关的结构和性能。

了解开关的电气原理和工作方式，弄清楚开关在电路中的位置和作用，以便正确操作和维修。

2. 执行开关操作前，应查明电气设备是否已切断电源。

确认电源已关闭后，方可进行操作，以免发生电击等事故。

3. 使用者在操作过程中，应按照标志指示正确按动开关，切换电路状态。

在操作过程中应保持手部干燥，以免发生电击事故。

4. 要保持开关的干燥清洁，避免将其暴露在潮湿的环境中。

可以定期使用干布擦拭开关外壳，防止灰尘和污物积累。

5. 遇到开关无法切断电源或电流异常等情况时，应及时停止使用，并报告维修人员进行处理。

切勿私自拆卸或修理开关，以免造成更大的安全风险。

二、煤矿防爆开关的维修方法1. 当煤矿防爆开关出现故障时，应先进行故障分析，确定故障原因。

可以通过观察指示灯状态、检查电路连接是否松动，或使用测试仪器进行测量等方式，找出故障的具体位置。

2. 对于电路连接松动等简单问题，可以通过紧固螺丝或握板等方式进行修复。

注意在拆卸和安装过程中，要注意防止金属件和电路板的损坏，保持清洁环境。

3. 对于故障无法修复或需要更换部件的情况，应及时调用专业人员进行维修。

维修人员应具备相关的技术知识和经验，能够熟练操作各种维修工具，并能正确判断故障原因，采取有效的修复措施。

4. 维修完毕后，应进行功能测试，确保防爆开关的性能和安全性能达到要求。

测试时可以连接电路进行演示，确认开关的切换状态和指示灯的显示是否正确。

5. 维修完毕后，应对其进行保养和保护。

定期检查开关的表面是否清洁干净，连接螺丝是否紧固，以及指示灯是否正常。

矿用本质安全型开关电源的研究

矿用本质安全型开关电源的研究摘要：矿用本质安全型开关电源是一种特殊的电源，其原理基于本质安全的概念。

其主要特点是具有自我保护功能，能够在任何危险情况下自动停止工作，保障电器设备和人员的安全。

在矿山等易燃易爆的场所使用本质安全型电源，将是一种可靠、安全的选择。

本文将针对矿用本质安全型开关电源展开详细分析，以供参考。

关键词：矿用；本质；安全型；开关；电源前言：本质安全型开关电源是一种特殊的直流电源，可以在矿山等容易发生爆炸事故的场所使用，以确保电器设备的安全、可靠运行。

矿山是一个特殊的工作环境，其环境和工作条件会对电器设备的性能和安全性提出很高的要求。

因此，为了保障矿山电器设备的正常工作和人员生命安全，需要采用具有本质安全性的开关电源，以保障矿山电器设备的正常工作和人员生命安全。

1.矿山环境和电器设备的特点1.1矿山环境的特点矿山的地下深度很深，常年不见阳光，地下的环境温度很高，且湿度较大。

地下深处气压也较大，这种环境会对电器设备的工作产生很大的影响。

矿山地下的环境中含有大量的灰尘和湿气，这些物质会对电器设备的工作产生很大的影响。

一些矿物中还含有腐蚀性气体，会对电器设备造成腐蚀和损坏。

矿山事故是一种常见的安全事故，特别是煤矿和金属矿山。

矿山事故会对电器设备产生很大的冲击和损害，因此需要使用具有本质安全性的电源，以保障矿山电器设备的正常工作和人员生命安全[1]。

1.2矿井中电器设备的特点矿井中的电器设备工作环境十分恶劣，温度高、湿度大、灰尘多，容易受到腐蚀和损坏。

矿山中的电器设备需要长时间工作，运行时间长，需要具有稳定、可靠、高效的电源。

矿井中的电器设备安全性要求很高，特别是对于煤矿等易燃易爆的场所，需要使用具有本质安全性的电源，以避免安全事故的发生。

矿井中的电器设备需要远距离传输电能，需要使用高效、稳定的电源，以保障电能传输的可靠性和稳定性。

1.矿用本质安全型开关电源原理矿用本质安全型开关电源主要包括变压器、整流器、滤波器、开关电源、控制电路等组成部分。