Accelerator and dry fire extinguishing system and method of water charging exhaust

By designing an accelerator that includes a valve body, valve cover, and differential pressure start-up assembly, the sealing effect is automatically adjusted by the air pressure difference. This solves the problems of delayed fire extinguishing after sprinkler head explosion and irregular start-up of the sealing seat in dry fire-fighting systems, achieving rapid venting and stable sealing, and improving the system's response speed and reliability.

CN117090981BActive Publication Date: 2026-07-21CHUANAN FIRE IND CO LTD
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Patent Information

Application Number
CN202310903746.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-21
Publication Date
2026-07-21
Estimated Expiration
2043-07-21

AI Technical Summary

Technical Problem

In existing dry fire suppression systems, the extinguishing time is delayed after the sprinkler head explodes, and stored items in non-fired areas are soaked. Existing accelerators have high requirements for springs, and the activation points of the sealing seats are not regular enough.

Method used

An accelerator comprising a valve body, valve cover, and differential pressure start assembly is designed. Through the combination of a sealing gasket and a return spring, the sealing effect is automatically adjusted by the air pressure difference, the gas is quickly vented, and the dry alarm valve is activated, ensuring sealing performance and rapid response.

Benefits of technology

It achieves stable sealing performance under different air pressures, fast exhaust speed, reduces losses in non-ignition areas, and improves the system's response speed and reliability.

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Abstract

An accelerator and dry fire extinguishing system and a method for exhausting and water filling thereof. The accelerator for dry fire extinguishing system comprises a valve body, a valve cover, a differential pressure starting assembly; the differential pressure starting assembly comprises a diaphragm, a connecting body, a transmission column and a sealing gasket seat. The dry fire extinguishing system comprises the accelerator and further comprises a water supply pipe network, an air filling pipe network and a dry alarm valve. The method for exhausting and water filling of the dry fire extinguishing system comprises the following steps: the accelerator guides the gas in the air filling pipe network into the middle cavity of the dry alarm valve. The application has better sealing effect and smaller dependence on the spring with the increase of air pressure. The exhaust passage has large sectional area and large exhaust capacity. The pre-tightening force of the spring is adjusted to control the starting sensitivity by screwing the plug; the three-way air inlet can be flexibly connected, and the pressure relief port can be connected to the middle cavity of the dry alarm valve group to destroy the pressure balance in the cavity and start quickly; the independent coaxial check valve core design ensures that the upper cavity is not leaked when the lower cavity is relieved.
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