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what is the reason in the runing of the pipeline flange leakage?

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Update time : 2015-10-23 10:40:17

The working medium

1, tube of the temperature change is too large is one of the reasons causing the leakage of flange joint surface. Since the bolt is not in direct contact with the pipeline, so changes in temperature changes behind bolt flange temperature. When the pipeline temperature drops sharply, the bolt temperature could decrease, which will cause the flange and bolt from the temperature difference, and make them the expansion is not the same, disappeared tightening force causes the flange, resulting in leakage.
2, insulation flange joints poor or no insulation.
3, flange perennial, gaskets aging.
4, flange connections are not tight.