Self-operated pressure regulating valve assembled with improved valve seat fixing structure, and working mode thereof

Abstract

The invention discloses a self-operated pressure regulating valve assembled with an improved valve seat fixing structure, and a working mode thereof. The self-operated pressure regulating valve assembled with the improved valve seat fixing structure structurally comprises a connector, a first valve seat shell, a second valve seat shell, a pressure valve element control mechanism, a rated pressureadjusting bolt, a self-pressure response device and a liquid inlet pipe. The self-operated pressure regulating valve assembled with the improved valve seat fixing structure provided by the invention is simple in structure and convenient to connect; the various parts are independent and demountable, and the disassembling and assembling processes are simple and not complicated, so that the self-operated pressure regulating valve assembled with the improved valve seat fixing structure has good freedom and extensibility and high practicability; the valve seat structure adopts a long strip shape, so that compared with a traditional circular valve seat, the utilization of the area of the valve seat is greatly improved, the section area of object conveying of the valve seat is increased, the conveying efficiency is improved, the pressure regulating range is large due to a large conveying area, and the practicability and a conveying effect of the self-operated pressure regulating valve are farsuperior to those of similar products on the market.

Description

technical field [0001] The invention belongs to the field of pipeline transportation, and in particular relates to a self-operated pressure regulating valve equipped with an improved valve seat fixing structure and its working method. Background technique [0002] Self-operated pressure regulating valves are divided into three series of self-operated pressure, differential pressure and flow regulating valves. The self-operated pressure regulating valve is divided into two types: before the valve and after the valve according to the position of the pressure taking point. When the pressure taking point is in front of the valve, it is used to adjust the pressure before the valve to be constant; when the pressure taking point is behind the valve, it is used to adjust the pressure behind the valve to be constant. . When the pressure before the valve and after the valve is introduced into both sides of the air chamber of the actuator, the self-operated differential pressure regul...

AI Technical Summary

Problems solved by technology

[0003] Traditional self-operated pressure regulating valves on the market have relatively large limitations. Most of the valve seat structure and valve core are internally fixed and cannot be disassembled. As a pressure valve, the most easily damaged parts are the valve core and valve seat. The seat of the traditional regulating valve cannot be disassembled, and the valve core cannot be disassembled, which leads to the need to replace the entire pressure regulating valve when the internal valve core or valve seat of the pressure valve is faulty and damaged, which leads to a large waste of resources and greatly improves Production and transportation costs, at the same time, the traditional valve seat structure adopts a circular structure, which cannot effectively use the seat area, resulting in a small pressure adjustment range of the traditional pressure regulating valve, and low transportation efficiency

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