Fire hydrant water pressure testing device

By setting a vent hole and a spring-driven piston in the test tube of the fire hydrant water pressure test device, the cavitation problem caused by the air inside the water spray gun being squeezed into the fire hydrant is solved, and the accurate detection of the fire hydrant water pressure and the protection of the fire hydrant valve are achieved.

CN222677092UActive Publication Date: 2025-03-28刘瑞瑞
1 Cites 0 Cited by

Patent Information

Application Number
CN202420720430.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-09
Publication Date
2025-03-28
Estimated Expiration
2034-04-09

AI Technical Summary

Technical Problem

During the testing process of the existing fire hydrant water pressure test device, the air inside the water spray gun was squeezed into the fire hydrant by water flow, resulting in cavitation problems and damaging the valves on the fire hydrant.

Method used

A fire hydrant water pressure testing device is designed. By setting a vent hole at the right end of the test tube, the piston is used to push the piston to discharge the air in the test tube through the vent hole, preventing the air from entering the fire hydrant, and at the same time, the water pressure test is carried out when the water flows through the pressure gauge component.

Benefits of technology

It effectively avoids air entering the fire hydrant, prevents cavitation problems, ensures the safety of the fire hydrant valve, and realizes accurate detection of the water pressure of the fire hydrant.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model relates to the technical field of water pressure testing devices, and discloses a fire hydrant water pressure testing device which comprises a fire hydrant body, the right side of the fire hydrant body is communicated with a water outlet, and the right end of the water outlet is communicated with a water pressure testing mechanism; the water pressure testing mechanism comprises a testing pipe and a connecting part, the testing pipe is communicated with the water outlet through the connecting part, a vent hole is formed in the right end of the testing pipe, the top of the testing pipe is communicated with a pressure gauge part, a first spring is arranged to push a connecting plate leftwards, and then a piston is pushed leftwards; when water flow does not enter the testing pipe, the piston moves to the leftmost end of the testing pipe, the piston is pushed to move rightwards after the water flow enters the testing pipe, air in the testing pipe is pushed out of the vent hole in the right side, the air is prevented from entering the fire hydrant body from the water outlet, and the pressure gauge part tests the water pressure when the water flow passes through the pressure gauge part.
Need to check novelty before this filing date? Find Prior Art