A resin-encapsulated explosion-proof sensor

By introducing a resin potting design into the hydrogen explosion-proof sensor, and utilizing expansion isolation components and secondary potting components, the safety hazard of hydrogen diffusion to electronic components is solved, achieving rapid isolation and enhanced gas barrier effect, and ensuring the safety and stability of the sensor.

CN120446402BActive Publication Date: 2026-05-26ZHEJIANG GUWEI TECH CO LTD
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Patent Information

Application Number
CN202510614135.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-05-13
Publication Date
2026-05-26
Estimated Expiration
2045-05-13

AI Technical Summary

Technical Problem

The existing hydrogen explosion-proof sensor's gas collection hood structure design has safety hazards, as hydrogen may diffuse into the electronic component area, leading to an explosion risk.

Method used

The explosion-proof sensor design, which employs resin potting, includes a gas collection hood cover and a base. Inside, there are gas-sensitive detection components, expansion isolation components, and secondary quick-sealing components. The expansion isolation components use expansion material to quickly isolate hydrogen gas, and the secondary potting components fill any uncovered gaps to enhance the isolation effect.

Benefits of technology

It achieves rapid hydrogen isolation, reduces the risk of explosion, and ensures the safety and stability of the sensor. The gas isolation effect is improved by multi-angle injection of liquid bladder and precise filling of secondary potting liquid.

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Abstract

This invention relates to the field of explosion-proof sensor technology and discloses a resin-encapsulated explosion-proof sensor. The sensor comprises: a cavity formed by combining the gas collecting hood cover and the gas collecting hood base; a gas-sensitive detection component, an expansion isolation component, and a secondary fast-sealing component sequentially installed from top to bottom within the cavity; the gas-sensitive detection component for real-time detection of hydrogen content in the air; and the expansion isolation component, through rapid filling with expansion material, achieving rapid gas isolation within the cavity via physical properties, thus providing a safe early warning effect. When the hydrogen concentration within the sensor's gas collecting hood exceeds the standard, the expansion material in the liquid bladder is triggered and rapidly expands. Because the liquid bladder is installed in a specific position, the expanded material quickly fills the surrounding space, separating the gas-sensitive detection cavity from the hydrogen and preventing further hydrogen diffusion, thereby achieving the function of rapid gas isolation and providing a safe early warning effect.
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