Hydraulic pressure test seal air bleeder

Abstract

The invention discloses a hydraulic pressure test seal air bleeder. The hydraulic pressure test seal air bleeder is used for a hydraulic pressure test on a part with a first end part and a second end part, the first end part is provided with a first port, the second end part is provided with a second port, the hydraulic pressure test seal air bleeder comprises a fixed plate and a water channel cylinder, the fixed plate is provided with a through hole, the fixed plate fixedly sleeves the water channel cylinder through the through hole, the fixed plate fits to the end surface of the first end part of the part and is sealed, one end of the inner hole of the water channel cylinder is communicated with the first port, the other end of the water channel cylinder is plugged so that the inner hole forms a blind hole, the outer wall of the water channel cylinder is provided with a radial hole communicated with the inner hole and the radial hole is provided with a plugging part. The hydraulic pressure test seal air bleeder can seal a part needing a hydraulic pressure test, can completely release air in the cavity of the part, can prevent air residual in the cavity of the part, can keep stable pressure in a test, can visually show part defects, is convenient for discovery of detects by operators and can well guarantee end cap quality.

Description

technical field [0001] The invention relates to a deflation device, in particular to a hydraulic test sealing deflation device. Background technique [0002] For flameproof explosion-proof motors, it is necessary to carry out hydrostatic tests on the components that make up the casing to verify whether the casing can effectively withstand the pressure generated by the explosion of flammable gases inside the motor. Hydrostatic test is usually divided into dynamic pressure test and static pressure test. For mass production, static pressure test, that is, hydrostatic test, is often used. [0003] Among them, in the hydraulic test of the end cover as a part of the shell, most manufacturers use the method of directly sealing the opening at one end of the end cover and injecting water into the cavity of the end cover through the opening at the other end of the end cover. The cavity of the end cover is large, and there will be more air accumulated in the top of the cavity of the e...

AI Technical Summary

Problems solved by technology

[0003] Among them, in the hydraulic test of the end cover as a part of the shell, most manufacturers use the method of directly sealing the opening at one end of the end cover and injecting water into the cavity of the end cover through the opening at the other end of the end cover. The cavity of the end cover is large, and there will be more air accumulated in the top of the cavity of the end cover, which cannot be completely discharged. During the process of maintaining pressure, the air accumulated in the cavity will be partially dissolved in water under pressure, making the The pressure in the chamber gradually decreases; or when there are small defects on the end cover, the air accumulated in the cavity will gradually be discharged, making the pressure gradually decrease, so it is impossible to judge whether the structural performance of the end cover is qualified, which affects the water quality. Correct Judgment of Structural Performance of Parts by Pressure Test

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