Adjustable pressure reducing pore plate

Abstract

The invention discloses an adjustable pressure reducing pore plate. The device comprises a shell, the shell is sequentially provided with a water inlet part, a mounting part and a water outlet part which are in coaxial communication with each other from the water inlet end to the water outlet end, the diameter of the inner wall of the installation part is smaller than the diameter of the inner wall of a water inlet part and the inner wall of a water outlet part, the side surfaces of the water inlet part and the outlet part are respectively provided with a pressure gauge, a limiting clamp spring, a worm gear and an adjustable blade used for limiting the radial displacement of a worm wheel is sequentially arranged on the inner wall of the mounting part from the water inlet end to the water outlet end, the worm gear and the adjustable blade are movably connected and are movably connected with the mounting portion, and a worm used for driving the worm gear to rotate is further arranged onthe mounting portion; the worm gear is rotated to drive the worm wheel to rotate, the worm gear drives one end of the adjustable blade to generate radial displacement to change the central aperture ofthe inner wall of the mounting part. According to the adjustable pressure reducing pore plate, the structure is simple, the installation is convenient, the size of the water outlet hole can be adjusted by adjusting the blades through the worm and gear, the outlet pressure can be accurately controlled through cooperation with a test gun, and the purpose of pipeline pressure reduction is achieved.

Description

technical field [0001] The invention belongs to the technical field of pipeline decompression components, in particular to an adjustable decompression orifice. Background technique [0002] The traditional decompression of the fire pipe network is to control the outlet pressure by installing a stainless steel plate with a fixed aperture in the pipe. The aperture is pre-calculated. When calculating the aperture of the decompression orifice, it is affected by factors such as pump pressure error, pipeline hydraulic friction, outlet flow error, and height. The amount of calculation data is huge and there are many objective factors. It often takes a lot of time and effort to calculate the result. And after the production and installation are completed, the use requirements cannot be met, and it is affected by environmental factors during use. If the decompression orifice plate is replaced later, it will not only be time-consuming and laborious, but also cannot be replaced after t...

AI Technical Summary

Problems solved by technology

The aperture is pre-calculated. When calculating the aperture of the decompression orifice, it is affected by factors such as pump pressure error, pipeline hydraulic friction, outlet flow error, and height. The amount of calculation data is huge and there are many objective factors. It often takes a lot of time and effort to calculate the result. And after the production and installation are completed, the use requirements cannot be met, and it is affected by environmental factors during use. If the decompression orifice plate is replaced later, it will not only take time and effort, but also due to the limitation of the installation process, it is often impossible to replace it after the installation is completed.

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