Self-actuated piston flow and pressure regulating valve

Abstract

The invention discloses a self-actuated piston flow and pressure regulating valve. The self-actuated piston flow and pressure regulating valve comprises a self-actuated piston flow and pressure regulating valve body. The self-actuated piston flow and pressure regulating valve is composed of a connecting pipe, a ball valve, an upstream pressure gauge, a downstream pressure gauge, a piston type flow and pressure regulating valve, a guide valve, a needle valve, a throttle valve, a filter valve, an expansion joint, a clutch gearbox and a hydraulic cylinder. According to the self-actuated piston flow and pressure regulating valve, the filter valve can remove large particles to avoid jamming or energy efficiency decrease of the entire system, which is caused by pollutant; the hydraulic cylinder is pushed by pipe liquid pressure to adjust pressure difference without any external power or other energy sources, so that convenience can be greatly improved; the motion direction of a piston is identical to that of fluid, runners can be simple, the cavitation coefficient can be improved significantly, and the anti-cavitation effects in high pressure difference can be significant. Meanwhile, the self-actuated piston flow and pressure regulating valve is reasonable in design, simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to a valve, in particular to a self-operated piston flow regulating and pressure regulating valve. Background technique [0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system; a Gongliang valve is a device that allows the medium (liquid, gas, powder) in the piping and equipment to flow or stop and can control its flow; the valve It is a control component in the pipeline fluid delivery system. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, etc.; it is used to change the passage section and the flow direction of the medium , has the functions of diversion, cut-off, throttling, check, diversion or overflow and pressure relief; valves for fluid control, from the simplest stop valve to various valves used in extremely complex automatic control systems, its varieties And a wide variety of specificatio...

AI Technical Summary

Problems solved by technology

For the valves on the market today, under the condition of large pressure difference, the cavitation phenomenon behind the valve is obvious, which has an adverse effect on the safety of the pipeline network; in addition, the flow resistance is too large, resulting in a decrease in the flow capacity of the pipeline network

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