安全阀的安装和管道布置设计的要点

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原文：
安全阀的安装和管道布置设计的要点 1、安全阀应直立安装并靠近被保护的设备或管道。如不能靠近布置，则从被保护的设备或管道到安全阀入口的管道总压降，不应超过安全阀定压值的3％。 2、安全阀宜设置检修平台。布置重量大的安全阀时要考虑安全阀拆卸后吊装的可能，必要时应设吊杆。 3、安全阀入口管道应采用长半径弯头。 4、安全阀出口管道的设计应考虑背压不超过安全阀定压的一定值。对于普通型弹簧式安全阀，其背压不超过安全阀定压值的10％。 5、当排入放空总管或去火炬总管的介质带有凝液或可冷凝气体时，安全阀的出口应高于总管；否则，应采取排液措施。 6、排入密闭系统的安全阀出口管道应顺介质流向45°斜接在排放总管的顶部，以免总管内的凝液倒流入支管，并可减少安全阀背压， 7、当安全阀进出口管道上设有切断阀时，应选用单闸板闸阀，并铅封开，阀杆应水平安装，以免阀杆和阀板连接的销钉腐蚀或松动时，阀板下滑。当安全阀设有旁路阀时，该阀应铅封关。

“Installation of a safety valve and piping layout design points ”是由中国安全阀网提供的国际阀门新闻，译文仅供参考。另外，中国安全阀网还提供相关产品搜索：全启式安全阀、封闭式安全阀、高压安全阀、锅炉安全阀、蒸汽安全阀、等。

译文：
Installation of a safety valve and piping layout design points The safety valve should be installed upright and close to the protected equipment or piping. If not close to the arrangement, from the protected equipment or pipe to safety valve pipe at the entrance of the total pressure drop should not exceed the safety valve set pressure value of 3%. 2, the safety valve should be set up maintenance platform. The layout of the weight of safety valve safety valve after the demolition of the possibility of lifting, as necessary, set the boom. 3, a safety valve inlet pipe should be long radius elbow. 4, the safety valve outlet pipe should be designed to take into account the back pressure does not exceed a certain value of the safety valve set pressure. For ordinary spring-loaded safety valve, back pressure does not exceed 10% of the safety valve set pressure value. 5, when the media discharged vent Explorer or go to the torch Explorer with the condensate liquid or condensable gas, the export of the safety valve should be higher than the Explorer; otherwise drain measures should be taken. 6, the safety valve outlet pipe discharged into a closed system should shun media to the 45 ° miter at the top of the emission Explorer to prevent condensate within the Explorer down into the branch pipe and reduce the safety valve back pressure 7, when the safety valve on the import and export pipeline with shut-off valve should be used in single slide valve, and seals the opening, the stem should be installed horizontally so as to avoid corrosion or loosening of the stem and the valve plate to connect the pin when the valve plate decline. When the safety valve with bypass valve, the valve seals off.

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原文来源：http://www.1anquanfa.com/

2012-02-03 08:31