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An energy storage airbag connecting pipe sealing device and sealing method

A sealing device and airbag technology, which is applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve the problems of the gap between the airbag and the connecting pipe, the gas volume becomes smaller, the airbag becomes smaller, etc., and the sealing effect is good and good. Fill and seal, achieve self-fixing effect

Active Publication Date: 2021-11-26
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after long-distance transportation of the equipment, due to the influence of regions and temperature differences, the gas in the airbag will expand with heat and contract with cold, and the volume of the gas will become smaller, resulting in a smaller airbag and a gap between the airbag and the connecting pipe, which will cause the seal to fail

Method used

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  • An energy storage airbag connecting pipe sealing device and sealing method
  • An energy storage airbag connecting pipe sealing device and sealing method
  • An energy storage airbag connecting pipe sealing device and sealing method

Examples

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Embodiment approach

[0061] According to a preferred embodiment of the present invention, the connection between the nut of the bolt 1 and the lower pressure plate 52 in contact with it is a non-detachable connection, which has the advantages of good connection integrity and light structure. Preferably, the connection method between the nut of the bolt 1 and the lower pressure plate 52 in contact with it is adhesive connection or welding connection; more preferably welding connection, especially sealing welding.

[0062] Because the sealing device for the connecting pipe of the energy storage airbag of the present invention is used to seal the connecting pipes in the nuclear power equipment to ensure the cleanliness of the inside of the equipment, generally after the sealing equipment is installed at the connecting pipes, the inside of the equipment will be vacuumed, and then It is filled with inert gas protection, and the inert gas is not easy to react with the metal to protect the dryness and cle...

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Abstract

The invention discloses an energy storage air bag connection sealing device and a sealing method thereof. The device comprises: a bolt (1), a nut (2), a spring (4) and an annular air bag (6); Through the annular airbag (6) and the spring (4), the spring (4) is located above the annular airbag (6), and finally the nut (2) is fastened on the bolt (1), and the spring (4) is compressed to store energy. The connecting pipe sealing device of the energy storage air bag provided by the invention has low requirements on the precision and roundness of the connecting pipe, has good filling and sealing effect, and at the same time, the sealing effect is less affected by the environment, and has the advantages of simple structure, convenient manufacture and wide application range.

Description

technical field [0001] The invention relates to a sealing device for pipe joints, in particular to a sealing device for steel pipe joints of nuclear island pressure vessels. Background technique [0002] In the field of nuclear power equipment manufacturing, the cleanliness of the inside of the equipment is very high. After the equipment is manufactured, after the final cleaning of the inside of the equipment, it is necessary to seal the connecting pipes, vacuumize the inside of the equipment and then fill it with nitrogen for protection. The inert gas is not easy to react with the metal to protect the dryness and cleanliness inside the equipment. [0003] For the reliable operation of the nuclear power plant, the joints of the nuclear island container equipment and the pipeline are welded. The requirement of precision is low, even if the inner wall of the nozzle is not round, the airbag can be well filled and sealed. However, after long-distance transportation of the equi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/134
CPCF16L55/134
Inventor 张美静卓成宗王帅刘晶赵姗姗李澍
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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