Leak stopping method and apparatus for special-shaped sealing surface under temperature and pressure

Abstract

The invention provides a plugging method with temperature and pressure for an exotic sealing face and a plugging device thereof. In the invention, a sealing basal body is provided with an exotic face and supported by a frame-shaped sealing structure member, the upper end of the sealing structure member is tightly pressed against the sealing body and the lower end thereof is closely contacted withthe sealing basal body by a lower self-sealing soft metal plate, one end of the upper self-sealing soft metal plate is weld on the frame-shaped sealing structure member, the non welding end is closely contacted with the sealing basal body, a sealing glue room is formed between the sealing body and the sealing basal body, a sealing room is formed between the frame-shaped sealing structure member and the sealing basal body, an glue injecting hole is arranged on the sealing body, and the plugging is carried out by injecting sealing glue into the sealing glue room from the glue injecting hole. The plugging method and plugging device of the invention adopt a two-stage self-sealing structure, have high sealing reliability, are applicable to plugging with temperature and pressure for high temperature and pressure system and equipment, and have low requirement for sealing structure member material, low sealing glue consumption and low plugging cost.

Description

technical field [0001] The invention belongs to the technical field of leakage plugging at temperature and pressure, and in particular relates to a plugging method and a plugging device when a sealing surface of a special-shaped structure leaks under high temperature and high pressure. Background technique [0002] In the production process of electric power, chemical industry, etc., the phenomenon of leakage of the sealing surface with special-shaped structure often occurs. For low-pressure low-temperature systems with low pressure and low temperature at the leakage point, or the leakage location with simple special-shaped structure and easy operation, you can use figure 1 The plugging method shown is to insert a wedge-shaped soft metal sealing structure 5 into the leak point gap between the sealing body 1 and the sealing base 2, and set a glue injection hole 3 on the sealing body 1, through the glue injection hole 3 to Inject sealant into the newly formed sealant chamber ...

AI Technical Summary

Problems solved by technology

In addition, since the mechanical strength of the material decreases significantly with the increase of temperature, the sealing structure 5 has high requirements on the material, and this method is neither economical nor safe for the plugging of higher temperature and higher pressure systems

Furthermore, although this plugging method can reduce the requirement for the complexity of the sealing structure, the space of the sealant chamber 4 formed by it is very large, and the glue consumption is too high

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