High-pressure flat gate valve valve-seat support ring meeting full-differential-pressure opening requirements

Abstract

The invention discloses a high-pressure flat gate valve valve-seat support ring meeting full-differential-pressure opening requirements. The valve-seat support ring refers to an annular component which is used for fixing a valve seat in a flat gate valve, a ring groove is formed in the end face of one side of the valve-seat support ring, the valve seat serving as a sealing part is installed in the ring groove, and the valve-seat support ring is characterized in that a balance hole is formed in the valve-seat support ring, the center line of the balance hole is located on the plane where the bottom face of the ring groove is located, one end of the balance hole starts from the outer ring surface of the ring groove, and the other end of the balance hole penetrates into the outer circumferential surface of the valve-seat support ring, so that an exhaust channel is formed. According to the valve-seat support ring, the balance hole is formed in the valve-seat support ring, the problem that a valve seat is damaged when the high-pressure full-differential-pressure opening is conducted is effectively solved, the full-differential-pressure opening requirements of the high-pressure flat gate valve can be satisfied, and the sealing performance and service life of the flat gate valve are guaranteed.

Description

technical field [0001] The invention relates to a high-pressure flat gate valve component, more specifically a high-pressure flat gate valve seat support ring for cutting off or adjusting high-pressure fluid medium in the fields of petrochemical industry and natural gas pipeline engineering. Background technique [0002] The larger the caliber of the liquid pipeline, the higher the pressure, the greater the throughput and transmission efficiency. The flat gate valve is a commonly used valve on the pipeline in the fields of petrochemical and natural gas pipeline engineering. With the enlargement of petrochemical installations and natural gas pipeline projects, the caliber and pressure of the matching flat gate valves are also getting larger and higher. When the operating pressure is higher than 6.3MPa, when the full pressure difference is opened, the valve seat that is first separated from the gate plate loses balance and protrudes from the ring groove of the valve seat suppo...

AI Technical Summary

Problems solved by technology

However, this method increases the size of the internal parts, so that the size of the valve body needs to be increased, and the processing shape of the combined valve seat support ring is complicated, requiring high precision and increasing the manufacturing cost.

Images