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题目名称机械密封式电缆贯穿件研制指导教师林佳瑜

2012年 6 月21 日

目录

一、课题分析 (1)

二、检索步骤及结果 (1)

1.中文数据库：万方数据知识服务平台 (1)

2.中文数据库：中国知网 (2)

3.中文数据库：维普中文科技期刊数据库 (4)

4.外文数据库：Web of Knowledge (5)

5.外文数据库：EI Village (9)

6.专利数据库：万方数据资源系统专利数据库 (12)

7.专利数据库：美国专利商标局专利数据库 (12)

8.中文搜索引擎：百度搜索 (14)

9.英文搜索引擎：google 学术搜索 (14)

三、文献综述 (15)

四、学习本课程的意见与建议 (16)

机械密封式电缆贯穿件研制

一、课题分析

电缆贯穿件（Cable transmit），是一种在某一特定环境内发生危险状态时，可以防止火焰、烟雾、气体和水通过电缆和管道贯穿件到达邻近结构的密封模块，广泛应用于船舶制造、海洋工程、石油化工、电力电信、国防军工、污水处理、工业及民用建筑等。

机械密封式电缆贯穿件（Cable Penetrations with Mechanical Seal Style），是在电缆穿墙时采用的，作为电缆穿墙时保障密封性和电性能要求的重要装置，用于保证核电站、核反应堆等核装置在正常、设计基准事故和地震工况下压力边界的完整性和电气完整性，防止放射性物质外泄。

本课题探究主要介绍了机械密封式电缆贯穿件的组件原理、特点及应用局限,并结合新时期的工业要求，介绍了其检验标准与方法。

本次课题调研的目的，在于使人们充分理解机械密封式电缆贯穿件的原理与作用，并且深刻感受到机械密封式电缆贯穿件的应用价值。机械密封式电缆贯穿件在未来一段时期必将发挥更大作用。

所属学科：工程技术 > 电气工程 > 电工材料

关键词：电缆贯穿件密封式机械核电站

Key Words: cable，Penetration，Seal，nuclear power plant

拟选用的数据库: 中文数据库有中国知网（CNIK），万方数据知识服务平台，维普知识资源系统，英文数据库有Web of Knowledgee和EI Village。

二、检索步骤及结果

1.中文数据库：万方数据知识服务平台

检索表达式：电缆 ADN 贯穿件 AND 密封

命中6条，其中专利来源4篇，期刊来源2篇。

机械密封式电缆贯穿件研制

Development of Cable Penetrations with Mechanical Seal Style

摘要：核电站、核反应堆等核装置为了防止放射性物质外泄,在电缆穿墙(壁)时采用电缆贯穿件进行隔离.通常电缆贯穿件需将电缆截断采用插接件进行密封,插接式电

缆贯穿件密封性能容易保证,密封可靠,泄漏率可达到极小.但加工零件多、精度要求较

高,制造成本高.特别是对于大电流动力电缆和要求较高的信号同轴电缆,容易产生插接

电极发热过大和信号衰减.为了满足工程需要,采用不截断电缆,不破坏电缆护套,本文

研制了一套试验样机.样机经过密封性能、电气性能和抗震试验的验证.样机的的各项技

术指标满足工程要求,泄漏率小于1×10-7Pa·m3·s-1.作者：李军格秦传洲罗正华Author： Li Junge Oin Chuanzhou Luo Zhenghua

作者单位：中国工程物理研究院核物理与化学研究所,绵阳,621900

期刊：价值工程 ISTIC

Journal： Value Engineering

年，卷(期)： 2012, 31(1)

分类号： TM246

关键词：核装置电缆贯穿件泄漏率

机标分类号： TL3 TP2

机标关键词：机械密封式同轴电缆贯穿件研制Style Mechanical Seal Cable 密封性能试验样机泄漏率放射性物质 电缆贯穿耐火密封装置安装

摘要：电缆在发生火灾时,火势和烟气往往通过其穿越的孔洞向邻室蔓延,使事故扩

大造成严重后果,文章以58000DWT散货船为例,对电缆贯穿耐火密封进行的研究,保证

被贯穿船体舱壁、甲板或平台原有的防护性能,并介绍了如何选择、计算电缆框及填料,

及电缆框及堵料的安装和使用.作者：薛芳

作者单位：扬州大洋造船有限公司,江苏,扬州,225106

期刊：中国高新技术企业

Journal： CHINA HIGH TECHNOLOGY ENTERPRISES

年，卷(期)： 2011, (3)

分类号： TM246

关键词：电缆耐火密封装置 DMT填料电缆贯穿件膨胀堵料

机标分类号： TU9 TP2

机标关键词：计算电缆贯穿耐火密封装置严重后果防护

性能散货船烟气文章填料事故平台孔洞甲板

2.中文数据库：中国知网

检索表达式：电缆 ADN 贯穿件

命中6条，其中专利来源4篇，期刊来源2篇。

◆核电厂安全壳构筑物上的电器贯穿件

【英文标准名称】 Electrical penetration assemblies in containment structures for nuclear power plants

【标准号】 GB/T 13538-1992

【标准状态】现行

【国别】中国

【发布日期】 1992-07-01

【实施或试行日期】 1993-03-01

【发布单位】国家质检总局(SBTS)

【起草单位】上海核工程研究院

【标准类型】产品(CP)

【标准水平】 ()

【中文主题词】安全装置;核电站;电气设备;壳体结构

【英文主题词】

【摘要】本标准规定了安全壳构筑物上的电气贯穿件在设计、计算、加工、装配、试验、安装和维修中要满足的工程安全要求。本标准适用于安全壳上的电气贯穿件。本标准中,电气贯穿件包括： a.在安全壳内侧和安全壳外侧最近连接点之间的电气导体(贯穿导件)；

b.用于这种导体电气绝缘的部件；

c.用于这种导体组件的耐压、气密和耐温的壳体以及用于使它与安全壳墙壁相连接的部件；

d.用于监测气体泄漏的永久性的连接装置。以下部件不属于电气贯穿件： a.用于固定贯穿件的安全壳墙壁的部件,例如用螺栓或管子连接的密封件或需要焊接的预埋管； b.连至贯穿件导体或连接器的外部电缆和导线； c.终端部件,例如电缆线鼻子或电缆头,或固定在电缆或连接导线上的焊接套管； d.临时连到贯穿件上的泄漏试验装置或抽气装置。对与贯穿件相连接的外部电路的要求或对安全壳构筑物的要求不属于本标准的范围。

【中国标准分类号】 F87

【国际标准分类号】 27_120_20

◆核电站电气贯穿件专用压力表组件

摘要：核电站电气贯穿件专用压力表组件是属于核电站电气贯穿件专用检测装置,

其特点是:在核电站安全壳内部能完全使用,必须要求它耐辐照、耐高温等恶劣工作环境.作者：卢小青

作者单位：江苏华光电缆电器有限公司,江苏,常州,213119

期刊：硅谷

Journal： SILICON VALLEY

年，卷(期)： 2011, (14)

分类号： TL374

关键词：核级压力表组件密封圈密封性能电气贯穿件

机标分类号： TL3 TM6

机标关键词：核电站安全壳电气贯穿件压力检测装置工作环境耐高温耐辐照表组件特点

3.中文数据库：维普中文科技期刊数据库

检索式：(题名或关键词=贯穿件密封核电站)*1989-2012，结果为7篇中文期刊 研究堆低压电气贯穿件的密封性能

刘晓[1,2] 钱达志[1] 王明珊[1] 徐显启[1] 李军格[1] 杨军[1] 张之华[1] 卢铁城[2][1]中国工程物理研究院核物理与化学研究所,四川绵阳621900 [2]四川大学物理系教育部辐射物理及技术重点实验室,四川成都610064摘要:电气贯穿件的密封性能直接关系着整个反应堆的安全性能。为了使电缆贯通式的电气贯穿件能满足研究堆设计文件的密封性能要求,首先分析了贯穿件筒体和电缆密封的难点,针对遇到的难点,分别采取了法兰挤压硅橡胶板和电缆芯线灌胶密封的方法,对贯穿件的缝隙进行密封。利用氦质谱仪器,对低压电气贯穿件样机和电缆进行了密封检测实验,实验结果表明,电缆贯通式的低压电气贯穿件密封结构能满足研究堆的密封要求。[著者文摘] 关键词:研究堆低压电气贯穿件密封

分类号: TL374.4[著者标引]文献标识码：A文章编号：1000-6931（2011）01-0080-04栏目信息：反应堆工程

相关文献:主题相关全文快照

Leak Tightness of Low Voltage Electrical Penetration Assembly on Research ReactorLIU Xiao,QIAN Da-zhi,WANG Ming-shan,XU Xian-qi,LI Jun-ge, YANG Jun,ZHANG Zhi-hua,LU Tie-cheng1.China Academy of Engineering Physics,P.O.Box 919-227,Mianyang 621900,China; 2.Key Laboratory for Radiation Physics and

Technology of Education Ministry, Physics Department,Sichuan University,Chengdu 610064,ChinaAbstract:The leak tightness of electrical penetration assembly is close connection with the safety of reactor.The cables that are through the electrical penetration assembly are not cut off,so it is difficult to seal the radioactive matter for electrical penetration assemblies and the cables.The methods that the rubber can be metamorphosed with the pressure of flange and that the gap of cables can be filled with especial glue were used to seal the radioactive matter.A serial of tests were done to check the leak tightness of electrical penetration assemblies.The test result shows that the sealed structure of electrical penetration assembly can keep integral of the boundary of reactor.[著者文摘]

Key words:research reactor; low voltage electrical penetration assembly; leak tightness

收稿日期: 2009-11-16修订日期: 2010-04-20基金资助:

作者简介:刘晓（1976-），男，陕西商南人，助理研究员，博士研究生，凝聚态物理专业

◆匈牙利波克什核电站更换玻璃-金属密封电气贯穿件提升安全水平

摘要:匈牙利波克什／德国兰茨胡特，2010年9月15日消息——匈牙利波克什唯一的核电站在该国的经济发展中扮演者举足轻重的角色。这座核电站拥有四个核反应堆，为全国的能量消耗提供了超过40％的能源。据国际原子能机构（IAEA）评测，波克什核电站的运营安全记录已经能与世界顶级核电站媲美。

关键词:玻璃-金属密封核电站匈牙利安全水平国际原子能机构电气经济发展核反应堆

分类号: TM623[机标]

4.外文数据库：Web of Knowledge

检索表达式：主题=(cable) AND 主题=(Penetration) AND 主题=(Seal)

检索结果: 3

◆Electrochemical behaviour and corrosion sensitivity of prestressed steel in

cement grout

作者: Blactot, E (Blactot, E.); Brunet-Vogel, C (Brunet-Vogel, C.); Farcas, F

(Farcas, F.); Gaillet, L (Gaillet, L.); Mabille, I (Mabille, I.); Chaussadent, T (Chaussadent, T.); Sutter, E (Sutter, E.)

编者: DeGiorgi, VG; Brebbia, CA; Adey, RA

来源出版物: Simulation of Electrochemical Processes II 丛书: WIT TRANSACTIONS ON ENGINEERING SCIENCES 卷: 54 页: 267-276 DOI: 10.2495/ECOR070261 出版年: 2007

被引频次: 0 (来自 Web of Science)

引用的参考文献: 14 [ 查看 Related Records ] 引证关系图

会议: 2nd International Conference on Simulation of Electrochemical Processes 会议地点: Myrtle Beach, SC 会议日期: MAY 09-11, 2007

会议赞助商: Wessex Inst Technol; WIT Transact Engn Sci

摘要:

The durability of prestressed concrete bridges primarily depends on the steel wire cables. Several disorders in these bridges are well known, such as fracture of these cables by stress corrosion cracking due to water penetration in the prestressing ducts. This water can contain various aggressive constituents with respect to corrosion (like chlorides). Its penetration inside the duct is due to the presence of sealing defects of the structure or in the concrete (like cracks).

The second category of defects relates to the cement grout injection, which protects cables. This occurs due to a degradation of the grout in contact with water (problems of bleeding and segregation) leading to brittle fractures of steels. The first step of the study consisted in obtaining a corrosive liquid typical of a segregated cement paste on which electrochemical tests were done. Electrochemical tests in synthetic solutions defined from a bibliographical study and analysis of real cases of segregated cement grout were also realized. High strength and ordinary steel specimens were used and all the tests were mainly done in deaerated conditions. The main results can lead one to consider that, in oxygen free conditions, steel specimens surface can be either in active or passive state. The susceptibility of steels to stress corrosion cracking was determined by the means of models applied to potentiodynamic polarisation.

入藏号: WOS:000248252400026

文献类型: Proceedings Paper

语种: English

作者关键词: prestressed steel; corrosion; segregation; synthetic solution KeyWords Plus: NAHCO3 SOLUTIONS; CRACKING

通讯作者地址: Blactot, E (通讯作者),Lab Cent Ponts & Chaussees Cellule Mecan & Struct, Paris, France

地址:

1. Lab Cent Ponts & Chaussees Cellule Mecan & Struct, Paris, France

出版商: WIT PRESS/COMPUTATIONAL MECHANICS PUBLICATIONS, ASHURST LODGE, ASHURST, SOUTHAMPTON SO40 7AA, ENGLAND

Web of Science 分类: Engineering, Multidisciplinary

学科类别: Engineering

IDS 号: BGL93

ISSN: 1746-4471

ISBN: 978-1-84564-071-2

翻译：

篇名：预应性钢水泥灌浆贯穿件的电化学行为和腐蚀敏感性

文摘：预应力混凝土桥梁的耐久性主要取决于钢材电线电缆。这些桥梁的若干种损坏，如电缆因在孔道预应力引起水贯穿件渗透腐蚀所导致的断裂，是众所周知的。这水可以包含各种腐蚀成分（如氯化物）。贯穿件渗透是由管于存在密封缺陷的结构或混凝土（如裂纹）。

Detection of a membrane shunt by DC field polarization

作者: Svirskis, G; Gutman, A; Hounsgaard, J

来源出版物: Journal of neurophysiology 卷: 77 期: 2 页: 579-86 出版年: 1997-Feb

[PubMed 相关文章]

摘要: Lower input resistance with intracellular recording, rather than with whole cell recording, usually has been ascribed to a shunt produced by penetration injury. An alternative explanation is a higher input resistance during whole cell recording due to wash-out of cytoplasmatic substances. We have used neuronal polarization at

the onset and termination of an applied electric field for shunt detection. An analytical expression was derived for field-induced polarization in a shunted ohmic cable. When the shunt is negligible, the transient response to a step in DC field decays much faster than the response to current injected through the recording electrode.

In the case of a significant shunt an over- and undershoot of the transmembrane potential appear at the shunted end when the field is switched on and off. Over- and undershoot decay with the same slowest time constant as the response to injected current. The results for the cable are generalized for nonuniform fields and arbitrary branching neurons with homogeneous membrane. The field effect was calculated for two reconstructed neurons with different branching pattern. The calculations confirmed the theoretical inferences. The field polarization can be used for shunt detection. The theory was checked experimentally in 18 ventral neurons in transverse slices of the turtle spinal cord. In seven neurons, field-induced under- and overshoots were observed when sharp electrodes were used. This indicates the presence of an injury shunt. In the remaining 11 neurons, however, there were no under- or overshoots, indicating that a shunt is not always induced. When patch electrodes were used, the seal quality was checked by inducing a spike with a strong field stimulus before and after the rupture of the membrane. When the threshold field strength for spike initiation was not changed by membrane rupture, under- and overshoots were not observed. This was taken to indicate a good seal. In such recordings under- and overshoots were observed when a shunt was induced by local application of glycine. The fast and monotonic response to weak field stimulation suggests homogeneous electric properties of the soma-dendritic membrane when active conductances are not recruited. We propose using polarization by weak DC fields to ensure the quality of recordings with sharp and whole cell electrodes and for checking the ohmic homogeneity of the membrane. These controls are particularly important for evaluation of electrotonic parameters.

PubMed ID: 9065831

文献类型: Journal Article; Research Support, Non-U.S. Gov't

语种: English

地址: Laboratory of Neurophysiology, Biomedical Research Institute

MeSH 词表:

主题词限定词

Animals

Membrane Potentials *physiology

Models, Theoretical

Motor Neurons *physiology

Patch-Clamp Techniques

Turtles

分主题子库: Index Medicus

ISSN: 0022-3077

NLM 唯一 ID: 0375404

国家/地区: UNITED STATES

状态: MEDLINE

创建日期: 22 May 1997 完成日期: 22 May 1997 修订日期: 15 Nov 2006 篇名：贯穿件隔板在直流电场极化下的分流检测

文摘：细胞内记录（分析法）下贯穿件的低输入阻抗，相对于全细胞记录（分析法），通常被认为是贯穿件损害引起的。另一种说法是，高输入电阻在全细胞（分析法）中来源由于冲刷物质。现在，我们使用神经法两极分化的外加电场来检测分流的起始和终止端，进而推导出在电场诱导极化下分流电缆的欧姆值。当分流可以忽略，瞬态响应在直流电场比电极注入电流衰减得更快。

5.外文数据库：EI Village

检索表达式：((((cable) WN All fields) AND ((Penetration) WN All fields)) AND ((seal) WN All fields)) 14 records in Compendex & NTIS for 1899-2012

97 records in Compendex, Inspec & NTIS for 1899-2012

Title: CABLE-PENETRATION WELDING SEAL FOR IN-CORE INSTRUMENTS

Authors: Ara, Katsuyuki; Yamada, Masaharu

Corresponding author: Ara, Katsuyuki

Source title: Nippon Genshiryoku Gakkaishi/Journal of the Atomic Energy Society

Abbreviated source title: Nippon Genshiryoku Gakkaishi

Volume: 23

Issue: 3

Issue date: 1981

Publication year: 1981

Pages: 183-190

Language: Japanese

ISSN: 00047120

CODEN: NGEGAL

Abstract: Stainless-steel-sheathed and inconel-sheathed cables with the outer diameter of 1. 0 mm were welded to nipples of stainless steel or inconel by two methods with an electron-beam and a microplasma-arc. The performance of the welds was examined through electrical insulation, autoclave, tensile and bending tests as well as metallographical examinations. The electrical insulation and autoclave tests showed that the welded parts by both methods have the capability of excellent sealing in a high-temperature and high-pressure water environment such as in the in-core of LWR (light water reactor).

Number of references: 8

Main heading: WELDS

Controlled terms: ELECTRIC CABLES - NUCLEAR POWER PLANTS

Classification code: 421 Strength of Building Materials; Mechanical Properties - 538 Welding and Bonding - 613 Nuclear Power Plants - 706 Electric Transmission and Distribution

Database: Compendex

篇名：贯穿件的内部内部焊接器件及其特性

文摘：外径为1毫米的不锈钢或铬镍铁合金电缆，通过电子束法与等离子体法，被焊接到不锈钢或铬镍铁合金的接头。焊缝的性能可以通过电气绝缘、高压釜、拉伸和弯曲试验以及金属试验来确定。电气绝缘和高压试验表明，通过（以上）两种办法制成的部件在高温高压以及水环境有优异的密封能力，如在LWR（轻水反应堆）中。

Title: Fire endurance tests of cable penetration firestops in masonry walls

and floors

Authors: Lacey, A.J.1

Author affiliation: 1 Bechtel Power Corp., San Francisco, CA, USA

Source title: IEEE Transactions on Power Apparatus and Systems

Abbreviated source title: IEEE Trans. Power Appar. Syst. (USA)

Volume: PAS-98

Issue: 4

Publication date: July-Aug. 1979

Pages: 1321-5

Language: English

ISSN: 0018-9510

CODEN: IEPSA9

Document type: Journal article (JA)

Country of publication: USA

Material Identity Number: I087-1979-005

Abstract: Firestop endurance tests for cable penetration seals and their results are described. The tests were designed to comply with requirements of the ANI/MAERP Standard Test Method (1976). The penetration seals were constructed of silicone room temperature vulcanizing (RTV) foam, bulk ceramic fibre, fibre board, cellular concrete, and Marinite panels coated with Flamemastic. A number of different representative designs were qualified

Number of references: 3

Inspec controlled terms: fires - power cables - safety - seals (stoppers)

Uncontrolled terms: masonry walls - floors - cable penetration seals - fire endurance tests

Inspec classification codes: B0160 Plant engineering, maintenance and safety - B8130B Power cables - E0240H Health and safety aspects

Treatment: Experimental (EXP)

Discipline: Electrical/Electronic engineering (B); Manufacturing and

production engineering (E)

Database: Inspec

篇名：砌体墙和地板中电缆贯穿件的耐火试验

文摘：本文将描述密封电缆贯穿件的耐火试验及其结果。这些试验的设计满足ANI/MAERP的试验标准。密封电缆贯穿件由RTV泡沫、散装陶瓷纤维、纤维板、泡沫混凝土组成。合格的代表性设计有若干个。

6.专利数据库：万方数据资源系统专利数据库

检索表达式：电缆 ADN 贯穿件 AND 密封

命中54条，其中专利来源54篇。

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7.专利数据库：美国专利商标局专利数据库

检索表达式：TTL/Penetration AND TTL/cable: 17 patents.

命中17条，其中专利来源17篇。

◆Cable penetration device

Abstract

A cable transit device, or cable penetration device, includes a tubular sleeve that has means at one end for fastening the device to a wall opening, and that has at its other end a thread which interacts with a thread on a nut. The nut includes

a support shoulder and the device includes a rubber sleeve which is located in the tubular sleeve and has an outer diameter corresponding to the inner diameter of the tubular sleeve. The rubber sleeve is accommodated between the circular shoulder of the tubular sleeve and the support shoulder of the nut. The device also includes a plurality of module elements, each containing a cable accommodating channel and each being divided to allow lateral access to the channel/channels. The modules together fill-out the opening of the rubber sleeve and have a shape that corresponds to the resultant outer contour of the mutually sealingly combined modules.

Inventors: Kreutz; Tomas (Lyckeby, SE)

Assignee: Roxtec AB (Karlskorna, SE)

Appl. No.: 10/088,491

Filed: March 26, 2002

PCT Filed: October 05, 2000

PCT No.: PCT/SE00/01924

PCT Pub. No.: WO01/28057

PCT Pub. Date: April 19, 2001

Foreign Application Priority Data

Oct 08, 1999 [SE] 9903636

Current U.S. Class: 174/151 ; 138/109; 174/657; 174/667; 174/77R; 277/603; 277/607; 277/627; 285/124.1; 285/152.1

Current International Class: H02G 15/00 (20060101); H02G 15/013 (20060101); H02G 3/22 (20060101); H01B 017/26 (); H02G 015/00 ()

Field of Search: 174/65G,65SS,77R,111,151,152G 138/96R,96T,109 277/602,603,605-609,626,627 285/124.1,124.3,152.1,354

篇名：电缆贯穿件装置

文摘：电缆运输装置，或电缆贯穿件装置，包括一个一端固定到墙上开口，另一端有一对互相作用的螺丝的管套。螺母有一个支撑架，装置有一个固定在管套内的胶套与一个与外径对应的管套筒。胶套固定在环形支撑管套和支撑螺母之间。该装置还包括多元模块的内容化，每个模块包含一个容纳电缆通道，并被分为允许横向行走的渠道。这些模块一起填满橡胶套的开。

8.中文搜索引擎：百度搜索

检索表达式：电缆 ADN 贯穿件 AND 密封

找到相关结果约7,040,000个。

◆研究堆低压电气贯穿件的密封性能

刘晓１，２，钱达志１，王明珊１，徐显启１，李军格１，杨军１，张之华１，卢铁城摘要：电气贯穿件的密封性能直接关系着整个反应堆的安全性能。为了使电缆贯通式的电气贯穿件能

满足研究堆设计文件的密封性能要求，首先分析了贯穿件筒体和电缆密封的难点，针对遇到的难点，分

别采取了法兰挤压硅橡胶板和电缆芯线灌胶密封的方法，对贯穿件的缝隙进行密封。利用氦质谱仪器，

对低压电气贯穿件样机和电缆进行了密封检测实验，实验结果表明，电缆贯通式的低压电气贯穿件密封

结构能满足研究堆的密封要求。

关键词：研究堆；低压电气贯穿件；密封

中图分类号：ＴＬ３７４．４文献标志码：Ａ文章编号：１０００－６９３１（２０１１）０１－００８０－０４

9.英文搜索引擎：google 学术搜索

检索表达式：主题=(cable) AND 主题=(Penetration) AND 主题=(Seal)

找到约 21,700 条结果

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篇名翻译：带执行模块的电气密封电缆贯穿件。

三、文献综述

（一）背景与现状

密封式电缆贯彻件广泛应用于船舶制造、海洋工程、石油化工、电力电信、国防军工、污水处理、工业及民用建筑等。一旦在某一特定环境内发生一种危险状态时，密封模块可以防止火焰、烟雾、气体和水通过电缆和管道贯穿件到达邻近的结构部分。虽然电缆和管道密封模块可以被视为安装设施的一个较小部件，但是该模块在保护人员、财产和连续操作方面都扮演至关重要的作用。

（二）技术要求

贯穿件作为电缆穿墙时保障密封性和电性能要求的重要装置，密封性能容易保证，密封可靠，并且泄漏率可达到极小。但加工零件多、精度要求较高，制造成本高。特别是对于大电流动力电缆和要求较高的信号同轴电缆，容易产生插接电极发热过大和信号衰减。

（三）研究现状

电缆贯穿件的研究重点在于如何保证其研究性，目前国内具有较为系统的密封性研

究较少，但基本上是从采用不截断电缆、机械密封电缆护套、密封树脂封堵电缆芯等方面着手进行研究、开发的，并须从抗震、密封、电性能三个方面进行试验。目前，已经有部分成果已经投入实际生产。

四、学习本课程的意见与建议

由于信息检索课程开课是正处于本学期学业最为繁重的时候，固在学习与完成本次检索、分析任务时感到异常吃力。凭着每次实验课上得积累，我开始着手检索、分析本次课题。但对于电缆贯穿件这一课题的研究，各大数据库、搜索引擎上都较难搜索到相关的文献，就更不用说有总结、整理的文献了。这也是我完成本次任务最大的困难所在。

随着检索时间的增加，我渐渐发现了一个较好的整理与分析办法。就是现在各大主要数据库上大致浏览若干篇关于电缆贯穿件的文献，大体上把握其技术特点与研究方向，再重新开始有方向、有重点地搜索。这种做法为我节省了不少时间。

生活在信息社会的人们把握了信息检索技术并能够灵活运用，能够在激烈的社会竞争中取胜，旧能进步我们的生活质量，推动社会的进步。

一份成功的检索，是要经历过非常大量的阅读与分析才能做到的。因此，这门课程同时教会了我如何更好地站在巨人们的肩膀上，整理好他们的思路，避免自己走弯路。

就本门课程的设置来看，我觉得最好能够想法与学生的实际、迫切的需求联系起来。我所在的电力专业，在大三下学期有许多课程设计，这些课程设计大多是比较棘手且需要参考前人研究成果的，如果能够将本门课程与这些课程设计联系起来进行教学，应该会使学生们掌握得更加透彻、牢固。