Dynamic water pressure regulation and control pipe network safety device

Abstract

The invention provides a dynamic water pressure regulation and control pipe network safety device. The device comprises a gate valve and a hydraulic driving device; the gate valve at least comprises avalve body and a flashboard, and a water inlet in the gate valve is used for being connected with a water inlet pipeline; and the hydraulic driving device comprises a hydraulic cylinder, and the hydraulic cylinder comprises a cylinder body, a piston and a piston rod, wherein the piston rod is connected with the flashboard, the lower portion of an inner cavity in the cylinder body is connected with the water inlet pipeline through a flashboard opening power pipeline, and the upper portion of the inner cavity in the cylinder body is connected with a flashboard closing driving device for drivingthe flashboard to close the gate valve.

Description

technical field [0001] The invention relates to secondary water supply equipment, in particular to a hydrodynamic pressure regulating pipe network safety device. Background technique [0002] According to Article 21 of the National Urban Water Supply Regulations: "It is forbidden to directly install pumps on urban public water supply pipelines to draw water." [0003] The Ministry of Housing and Urban-Rural Development's Technical Regulations for Secondary Water Supply Engineering CJ140-2010 also requires: "Secondary water supply shall not affect the normal water supply of urban water supply pipe networks"; "Secondary water supply facilities shall have operational safety measures." [0004] The above regulations indicate that the urban secondary water supply facilities and the water supply pipe network are not allowed to be directly connected to the water supply pipe network system, and the water supply pipe network and the secondary water supply equipment must When the wat...

AI Technical Summary

Problems solved by technology

[0009] 1) A water level difference is formed between the center elevation of the water supply pipe network and the installation elevation of the water pump unit, acting on the vacuum suppressor, which will produce a water seal effect on the vacuum suppressor, causing the vacuum suppressor to lose its air discharge function; when the water supply pipe network feeds water When the flow pressure is lower than the actual water supply demand, only relying on the gravity flow generated by the elevation difference will cut off the flow of the water supply pipe network section and form a negative pressure in the pipe network, seriously affecting the safe water supply of the water supply pipe network

[0010] 2) Due to the elevation difference, the horizontal inlet pressure of the steady flow tank under this condition does not represent the actual pressure of the pipe network, which is an illusion, and because the vacuum suppressor is sealed by water, the vacuum suppressor detection system cannot detect and process at all

The above two functions cannot be combined

[0013] 3. In the existing secondary water supply process, it is indeed effective to use the pressure setting value of the water supply pipe network to protect the safe water supply of the water supply pipe network and avoid the generation of negative pressure in the water supply area or pipe network. Interference, high failure rate, and in the low-pressure area of ​​water supply pressure, artificially adjust the set value of water supply pressure for local interests, resulting in low-pressure water supply areas and negative pressures in large areas of the water supply pipe network

Images