Reliable flange sealing structure for heat exchanger unit pipeline

Abstract

The invention relates to a reliable flange sealing structure for a heat exchanger unit pipeline. The reliable flange sealing structure comprises a first flange, a second flange and a sealing gasket, the sealing gasket is arranged between the first flange and the second flange, the first flange and the second flange are connected through a bolt, annular grooves are formed in the sealing faces of the first flange and the second flange, annular protruding edges matched with the annular grooves of the first flange and the second flange are arranged on the left side and the right side of the sealing gasket, and the height of the annular protruding edges is larger than the depth of the annular grooves. The reliable flange sealing structure is a linear dense filling structure with inner rings andouter rings, closed circular rings are formed in the annular grooves, so that the gasket can be prevented from deforming and being separated from a flange sealing surface under the action of high temperature and pressure, and air leakage of a pipeline is prevented; two seals can also be adopted under other high-pressure condition; and the sealing performance and the pressure bearing performance are far better than those of a traditional design.

Description

technical field [0001] The invention relates to a sealing structure for pipeline connection, in particular to a reliable flange sealing structure for the pipeline of a heat exchange unit. Background technique [0002] Flange connection is a commonly used mechanical connection method of pipelines. In practical application, flange connection also requires sealing gaskets for sealing. In order to have a reliable seal, metal gaskets must be used, and the cost of metal gaskets is high, which directly affects the economic benefits of the enterprise when the output of the heat exchange unit is large. If EPDM flat gaskets are used, under the action of temperature and pressure during the operation of the unit, the sealing gaskets will often deform and break away from the flange sealing surface, and even part of the sealing gaskets will protrude from the flange sealing surface, resulting in pipeline failure. Leakage makes the heat exchange unit unable to work normally, and sometimes ...

AI Technical Summary

Problems solved by technology

In order to seal reliably, metal gaskets must be used, and the cost of metal gaskets is high, which directly affects the economic benefits of the enterprise when the output of the heat exchange unit is large

If EPDM flat gaskets are used, under the action of temperature and pressure during the operation of the unit, the sealing gaskets will often deform and break away from the flange sealing surface, and even part of the sealing gaskets will protrude from the flange sealing surface, resulting in pipeline failure. Leakage makes the heat exchange unit unable to work normally, and sometimes causes the heat exchange station to be flooded or the electrical cabinet to be damaged, resulting in heating shutdown for maintenance and affecting the heating supply. In severe cases, it threatens personal safety and there are certain safety hazards

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