Glue injection check valve for generator end cover

Abstract

The invention belongs to the technical field of glue injection devices, and particularly relates to a glue injection check valve for a generator end cover. The glue injection check valve comprises a connector I, a connector II, a baffle and a spring; a glue injection channel is arranged in the connector I, one end of the connector I is connected with a glue injection gun, and the other end of the connector I is arranged in one end of the connector II; the baffle is arranged in the other end of the connector I; a glue injection channel is arranged in the connector II and is connected with the generator end cover; and the spring is arranged between the baffle and the connector II, is positioned in the direction of the glue injection channels and applies pressure to the baffle. The glue injection check valve effectively solves the problem that in the prior art, hydrogen possibly leaks from a glue injection opening quickly, and the major industrial safety risk and the equipment damage risk caused by hydrogen explosion are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of glue injection devices, in particular to a glue injection check valve for a generator end cover. Background technique [0002] At present, hydrogen is used to cool the stator core and rotor of large generators. The generator end cover is an important hydrogen sealing boundary. There is a glue groove inside the generator end cover. The glue groove is filled by injecting glue from the glue injection port to achieve hydrogen sealing. The quality directly affects the tightness of the hydrogen boundary of the generator body. If the hydrogen leakage defect of the generator end cover occurs during the operation of the unit, it is necessary to inject glue online at the glue injection port of the generator. [0003] At this stage, online glue injection needs to remove the plug from the glue injection port of the generator end cover, connect the glue gun to the glue injection port of the end cover, and then inject ...

AI Technical Summary

Problems solved by technology

[0004] 1. When removing the plug of the generator end cover, the inside of the generator is relatively large, and hydrogen gas may leak rapidly from the injection port, posing a major industrial safety risk of hydrogen explosion;

[0005] 2. The inside of the injection port of the end cover is a pipe thread structure, and there is a lot of sealant. When the glue injection gun is connected to the injection port of the end cover, it is easy to deflect the injection gun upwards, resulting in damage to the pipe thread;

[0006] 3. After the glue injection is completed, remove the glue injection gun. Due to the high pressure of the sealant inside the end cover, the sealant will continue to overflow from the glue injection port, and it is difficult to reinstall the plug

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