High voltage protection device

By designing a high-pressure protection device, and utilizing the combination of ball bearings, limit components, and compression springs, the gas flow into the pressure gauge is automatically cut off when the gas pressure in the gas pipeline reaches a preset value. This solves the problem of pressure gauge damage caused by a sudden increase in gas pressure, and improves detection accuracy and equipment lifespan.

CN115854088BActive Publication Date: 2026-03-03GUANGZHOU EASTERN DEV GAS CO LTD
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Patent Information

Application Number
CN202211619763.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-15
Publication Date
2026-03-03
Estimated Expiration
2042-12-15

AI Technical Summary

Technical Problem

In existing technologies, when the gas pressure flowing into the pressure gauge from the gas pipeline suddenly increases, the pressure gauge is easily damaged. Furthermore, relying on manual valve operation introduces errors, making it impossible to completely prevent pressure gauge damage.

Method used

Design a high-pressure protection device, comprising a housing, a shut-off element, and a locking structure. When the gas pressure in the gas pipeline reaches a preset value, it automatically cuts off the gas flow to the pressure gauge. Through the cooperation of a ball bearing, a limit element, and a compression spring, the shut-off element moves to cut off the gas flow.

Benefits of technology

It effectively prevents pressure gauge damage by automatically controlling the flow of gas into the pressure gauge, reducing human error, improving detection accuracy, and extending equipment life.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a high-pressure protection device, comprising: a hollow outer shell for connecting a gas pipeline and a pressure gauge, with a baffle plate at the top and a vent on the baffle plate; a hollow shut-off member disposed within the outer shell, having a first air inlet at the bottom, an air outlet on its side wall, and a sealing head at the top; the shut-off member having an initial position where the sealing head is separated from the vent to allow airflow, and a sealing position where the sealing head is inserted into the vent to block airflow; and a locking structure that restricts the shut-off member from moving from the initial position to the sealing position. When the pressure of the gas flowing into the outer shell from the gas pipeline reaches a preset value, the locking structure can release the restriction on the shut-off member, allowing it to move from the initial position to the sealing position under the influence of the gas. When the pressure of the gas in the gas pipeline reaches the preset value, the above structure can promptly cut off the gas flowing into the pressure gauge from the gas pipeline, thus preventing damage to the pressure gauge.
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Citation Information

Patent Citations

  • High-voltage protection device

    CN219221374U