Dynamic water pressure regulation and control pipe network safety device

A safety device and hydrodynamic pressure technology, which is applied in water supply devices, water supply devices, fluid pressure control, etc., can solve the problems of vacuum suppressors losing air discharge function, high failure rate, and affecting the safe water supply of water supply pipe networks, etc.

Pending Publication Date: 2020-07-17
山东科源供排水设备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Dynamic water pressure regulation and control pipe network safety device
  • Dynamic water pressure regulation and control pipe network safety device
  • Dynamic water pressure regulation and control pipe network safety device

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Example 1: See figure 1 , figure 2 One aspect of the present invention is to provide a kind of hydrodynamic pressure regulating pipe network safety device, comprising:

[0050] The gate valve includes at least a valve body 10 and a gate 11; the water inlet of the gate valve is used to connect the water inlet pipeline 1;

[0051] The hydraulic hydraulic driving device includes a hydraulic cylinder, and the hydraulic cylinder includes a cylinder body 8, a piston 6 and a piston rod 9; the piston rod 9 is connected to the gate plate 11; the lower part of the inner chamber of the cylinder body 8 passes through the gate The plate opening power pipeline 3 is connected with the water inlet pipeline 1; the upper part of the inner cavity of the cylinder body 5 is connected with a gate closing drive device for driving the gate 11 to close the gate valve.

[0052] In another embodiment, the gate closing drive device includes an energy storage air pressure tank 7, and the gas ou...

Embodiment 2

[0057] Example 2, see image 3 The difference between embodiment 2 and embodiment 1 is that the gate closing drive device is different. The gate closing drive device in embodiment 2 includes a gate closing drive spring 20, and the gate closing drive spring 20 is arranged in the cylinder upper part of the cavity. Simultaneously, the water inlet pipeline 19 is connected with the water inlet of the gate valve by the flange.

[0058] Figure 4 It is a structural schematic diagram of tank-type water supply equipment in the prior art; in the figure, 201 steady flow tank, 202 vacuum suppressor, 203 pressure sensor, 204 check valve, 205 water pump, 206 valve, 207 pressure sensor, 208 pressure gauge, 209 filter device, 210 anti-backflow device, 211 control cabinet.

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): E03B1/02E03B7/07
CPCE03B1/02E03B7/07E03B7/075F16K31/1223F16K3/0254F16K31/42G05D16/2013
Inventor 张勇华张会明晏清洪王洪波李梅王连勇高建东许春芳宋庆波
Owner 山东科源供排水设备工程有限公司
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