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2019-09-04View Original

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Reply #22019-09-04

Translate the following texts from chinese_simplified to portuguese. Return ONLY

Reply #32019-09-05

user

Reply #42019-09-05

Translate the following texts from chinese_simplified to portugg.

Reply #52019-09-05

在SY10043 泄压和减压系统指南章节3.14.2中提及，水力膨胀的泄放装置尺寸可按照3/4in*1in。

Reply #62019-09-07

谢谢，如果考虑上游压力增大，泄放量怎么计算啊？

Reply #72019-09-07

HG20570里面关于安全阀计算有各种分类介绍一般多种情况并存的取计算最大值

Reply #82019-09-07

规范里没有这种情况，上游主管压力高这个原因，可不可以按照管道最大流量作为泄放量计算啊？谢谢

Reply #92019-09-07

你所说的和上游高压阀门故障导致而设计的安全阀不是一种么？这个标准里有

Reply #102019-09-07

找到了，谢谢！对于液相管道，安全阀的泄放量为控制阀最大通过量与正常流量之差，并且要估计高压侧物料有无闪蒸。

Reply #112019-09-22

本帖最后由 henglinkou 于 2020-4-11 11:28 编辑 1.8MPa，150℃热水，安全阀起跳时，通过安全阀喉径的相态按液体考虑，出了安全阀后，有部分闪蒸。所以安全阀的泄放的体积流量还是按液态考虑。对于液态管道，假如是由于热膨胀引起的超压，泄放量较小，可以不必去计算泄放量，直接选DN25微启式安全阀即可。如果是由于来源处的压力大而引起的超压，泄放量为来源处流量。我编制的安全阀计算表，供试用。

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