氮气式水击泄压阀安装和维护手册2013版(中英对照)

外接能源式（氮气式）泄压阀

安 装 和 维 护 手 册

External Energy (Nitrogen-Controlled) Relief Valve

Installation and Maintenance Manual

重庆科特工业阀门有限公司

Chongqing Kete Industrial Valve Co., Ltd.

一、产品结构及工作原理

I. Structure and Working Principles

1、产品结构：如图1

1. Structure, as shown in Fig. 1

阀座valve seat

滑塞腔 Plug chamber

滑塞 Plug

Fig. 1

2、工作原理：

2. Working Principles:

外接能源式（氮气式）泄压阀的工作主要依赖于对泄压阀滑塞内腔的压力控制，其滑塞内腔控制动力由外供氮气瓶通过氮气控制柜减压系统对其控制压力进行调控。The External Energy (Nitrogen-Controlled) Relief Valve works mainly depending on the pressure control to its inner plug chamber. The control force to the inner plug chamber is supplied from external nitrogen bottle, with its pressure regulated by a reducing system in the nitrogen distribution cabinet.

当输送管线正常工作时，滑塞在内腔设定压力作用下将滑塞紧紧的与主阀座贴合，使泄压阀处于正常关闭状态；当管线发生水击，异常升压，超过其滑塞内腔所设定的安全控制压力时，在压差的作用下滑塞打开，通过滑塞外腔开始泄压并报警，管线压力下降，当管线压力恢复正常工作压力时，滑塞与阀座紧紧贴合，恢复关闭状态，停止泄放。

During normal transmission, the plug is tightly stuck to the main valve seat under the setting pressure of the inner chamber, so as to make the relief valve under normally closed state. When the pressure rises abnormally due to surge in the pipeline and exceeds the safety control value preset for the plug inner chamber, the plug will be opened under differential pressure to relieve the pressure via outer plug chamber while giving out alarm. When the pipeline pressure resumes to the normal working value, the plug will be

stuck against the valve seat; then it will resume to the closed state and stop relieving the pressure.

二、安装调试

II. Installation and Testing

1、安装

1. Installation

1.1 在安装泄压阀前，请确定阀门前的管道内没有脏东西、废弃物和金属屑，如果有条件，最好将阀门上游钢管进行吹扫，去除杂物。

1.1 Before installation, please ensure that there is no dirt, scrap or metal particles in the pipe on the

upstream of the valve. If possible, it is best to purge the steel tubes on the upstream of the valve.

1.2 在地上挖坑，将温差补偿瓶埋入地下，温差补偿瓶埋深最浅1米。温差补偿瓶

在埋地时，应使用埋地钢管同样的处理方式。在埋入前，确保压力管连接完成，温差补偿瓶阀门处于开启状态。

1.2 Excavate a pit on ground and bury the temperature compensation bottle in it. The burial depth of the

compensation bottle shall be 1m to the least. The compensation bottle shall be buried in adoption of the same treatment as that for the embedded steel tube. Before bury, please ensure that the pressure pipe is well connected and the valve on the compensation bottle is open.

1.3 如图2所示，将阀门安装在管线上，确定阀门上、下游螺栓连接牢固。

1.3 As shown in Fig. 2, install the valve to the pipeline. Please ensure that the bolts on the upstream and

downstream of the valve are securely fixed.

Fig. 2

温差补偿瓶Temperature compensation bottle

截断阀C Cutoff valve C