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管道安全阀与安全阀的设计有什么要点？

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管道安全阀与安全阀的设计有什么要点？

浏览：40次 | 提问时间： 07-02 05:48

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3个答案

细数着剩下的快乐 07-02 05:49

、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

凉人 07-02 05:57

您好，一般来说的话压力管道，理论上大于0.1MPa，管径大于25mm的危险介质管道都需要安全阀，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。希望我的回答对你有所帮助。

好无聊 07-02 06:05

(1)在设备或管道上的安全阀一般应直立安装。但对设置对液体管道、换热器或容器等处的安全阀，当阀门关闭后，可能由于热膨胀而使压力升高的场所，可水平安装; 　　
(2)安全阀的安装位置应尽量靠近被保护的设备或管道，如不能靠近布置，则要求从保护的设备管口到安全阀入口之间管道的压力降不超过该阀定压值的3%。; 　　
(3)安全阀不应安装在长的水平管道的死端，防止死端积聚固体或液体物料，以免影响安全阀正常工作;

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