Pressure balance device and pressure balance system

Abstract

The invention discloses a pressure balance device and a pressure balance system, relates to the field of pipes, and achieves the purposes of reducing influence on the pipes by negative pressure, reducing the wall thicknesses of the pipes, saving the material use and reducing the cost. The pressure balance device comprises a pipe body; the pipe body is provided with a first end and a second end opposite to each other; the first end is provided with a flowing inlet; the second end is provided with a flowing outlet; a cavity is formed in the pipe body; the inner diameter of the cavity is larger than the diameters of the flowing inlet and the flowing outlet; a balance piece is arranged in the cavity, and is provided with a channel; the channel is used for communicating the flowing inlet with the flowing outlet; a notch is formed in the side wall of the pipe body; and when the pressure in the channel is lowered, the balance piece is extruded into the channel, and air is fed in the channel from the notch. The pressure balance device is mainly used for preventing damage of the pipes by the negative pressure phenomenon.

Description

technical field [0001] The invention relates to the pipeline field, in particular to a pressure balance device and a pressure balance system. Background technique [0002] Pipelines are devices used to transport gases, liquids or fluids with solid particles. Pipes are widely used, mainly in water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. The pipeline may be subjected to many kinds of external forces, including its own weight, the thrust of the fluid acting on the pipe end, wind and snow loads, soil pressure, thermal stress caused by thermal expansion and contraction, vibration loads, and earthquake disasters. In order to ensure the strength and rigidity of the pipeline, various supports (hangers) must be installed, and more importantly, the material and wall thickness of the pipeline must be selected. When the equipment at the upstream of the...

AI Technical Summary

Problems solved by technology

In the prior art, the way to prevent pipeline damage caused by pipeline negative pressure is generally to increase pipeline strength, and increasing pipeline strength usually achieves the effect of increasing pressure bearing capacity by increasing pipeline wall thickness, which leads to serious waste of pipeline materials

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