截断阀

根据输气管道安全的需要，对干线快速截断阀压降速率设定值的确定方法进行了研究。

For the safety of gas transmission in long distance pipeline , the method regarding how to get the proper value of pressure drop rate for the fast block valve on pipeline is studied .

根据城市天然气高压管网线路截断阀的工艺特点及控制要求，从使用方的角度，提出直埋全焊接球阀及其电液联动执行机构的选用技术要求。

According to the technological characteristics and control requirements of block valve in urban natural gas high-pressure pipeline , the technical requirement for selection of directly buried fully welded ball valve and its electro-hydraulic actuating mechanism is put forward from the point of view of consumers .

利用SCADA系统检测实现快速截断阀关断报警

Use of SCADA systems for rapid detection cut-off valve off alarm

对于截断阀类来说，内漏是不允许的。

The cut-off valve type , the internal leakage is not allowed .

进口隔膜阀是一种特殊形式的截断阀。

Import boxes are a special form of cut-off valve .

天然气进出管道设置截断阀的重要性

Importance of Block Valves in Natural Gas Pipelines

和其他截断阀相比，球阀结构简单，启闭迅速，流体阻力小，密封性能好，寿命长，可靠性高。

Ball valves characterize simple structure , quick open and close , less flowing resistance , good tightness , long life , and high reliability .

全线设置有36座截断阀室，其中9座为远控阀室，各阀室均能在管道事故状态下紧急自动关闭；

Along the whole pipeline , there are thirty six shut off valve houses , of which nine are the remote ones and each of them can be automatically closed urgently when the pipeline meets with an accident .

奥利弗接着还研发出了双截断排放阀。这种阀门可以替换三个焊接在一起的阀门，更加安全。

Mr Oliver continued to innovate with the double block valve and bleed valve , which could replace three valves welded together and was more secure .