High temperature wear-resistant metal seal electric control ball valve
A metal seal, high-temperature wear-resistant technology, applied in the field of ball valves, granular media, and high-temperature fields, can solve the problems of large opening and closing torque and sealing surface wear, short service life, and reduced sealing performance, so as to achieve reliable sealing performance. Easy to close and low friction on the sealing surface
Active Publication Date: 2018-10-23
永嘉县信诚科技服务有限公司
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Problems solved by technology
Its main disadvantages are: during the opening and closing process, there is a large friction force between the ball and the sealing surface of the valve seat, resulting in large opening and closing torque and sealing surface wear, rapid reduction of sealing performance, and short service life of the product
Method used
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Embodiment Construction
[0010] Such as figure 1 The high-temperature wear-resistant metal-sealed electric control ball valve includes a valve body 11, a valve seat 12, and a sphere 13. The valve seat 12 is installed in the inlet and outlet channels of the valve body 11 on both sides of the sphere 13, and the upper end surface of the sphere 13 passes through the valve stem and the ball 13. The electric mechanism is connected, and the electric mechanism includes a motor M and a transmission mechanism; the outer circular surface of the valve seat 12 has two outer cylindrical surfaces with different diameters, and the outer cylindrical surface near the sealing surface of the valve seat 12 has a larger diameter, and the outer cylindrical surface of the valve seat 12 has a larger diameter. The two outer cylindrical surfaces are dynamic and sealingly matched with the inner wall of the channel of the valve body 11 respectively, and the radial step between the two outer cylindrical surfaces and the radial step...
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The invention relates to a high-temperature abrasion resistant metal sealing electric control ball valve comprising a valve body, a valve seat and a ball body. The outer circular face of the valve seat is composed of two outer cylindrical faces with the different diameters. The diameter of the outer cylindrical face of the sealing face side of the valve seat is larger than that of the outer cylindrical face of the other side of the valve seat. The two outer cylindrical faces with the different diameters are in motive seal fit with the inner wall of a valve body channel. A pressure control cavity is formed between radial steps between the two outer cylindrical faces and radial steps of the valve body channel and connected with a pressure control mechanism through a pressure pipeline. The pressure control mechanism is composed of a piston control mechanism and an electrical control circuit. When the valve is opened or closed, negative pressure is produced in the pressure control cavity, and the valve seat retracts into the pressure control cavity. After the valve is opened or closed in position, pressure is injected to the pressure control cavity, and the valve seat is pushed out of the pressure control cavity to be in compaction seal fit with the ball body. The high-temperature abrasion resistant metal sealing electric control ball valve has the advantages of being small in seal face friction, easy and convenient to open and close, reliable in sealing performance and the like in the opening and closing process and is suitable for high-temperature, high-pressure and abrasive medium working conditions.
Description
technical field [0001] The invention belongs to the field of valves, in particular to a ball valve. The invention is suitable for working conditions of high temperature and granular medium. Background technique [0002] Due to the advantages of simple structure, convenient opening and closing, and small flow resistance, ball valves are widely used in medium conveying pipelines in various fields. The structure includes a valve body, a valve seat, and a ball. Its main disadvantages are: during the opening and closing process, there is a large friction force between the ball and the sealing surface of the valve seat, resulting in large opening and closing torque and sealing surface wear, rapid reduction of sealing performance, and short service life of the product. Contents of the invention [0003] The purpose of the present invention is to provide a high-temperature wear-resistant metal-sealed electric control ball valve with no friction between the ball and the valve seat...
Claims
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IPC IPC(8): F16K5/06F16K5/20F16K31/122F16K31/06
CPCF16K5/06F16K5/205F16K31/0675F16K31/122
Inventor 应建忠
Owner 永嘉县信诚科技服务有限公司