Y-type stop valve
A globe valve, valve body technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of easy internal leakage and external leakage of the valve, easy erosion and wear of the sealing surface, etc., to achieve a small valve structure and reduce maintenance costs. , Solve the effect of easy erosion and wear of the sealing surface
Active Publication Date: 2018-12-25
WUZHONG ZHONGCHUANG VALVES
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Problems solved by technology
[0003] In order to overcome the deficiencies in the prior art, this application provides a Y-type stop valve, which makes the valve structure fine and small, and solves the problems of easy erosion and wear of the sealing surface of the high-temperature and high-pressure Y-type stop valve in thermal power plants, and easy internal and external leakage of the valve. technical problems, achieved the technical effect of improving the service life and reducing maintenance costs
Method used
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[0023] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the present application.
[0024] In the drawings, 1-valve body 2-seat ring 2.1-seat ring sealing surface 3-spool stem 3.1-spool stem sealing surface 3.2-upper sealing surface 3.3-anti-rotation guide surface 3.4-spool stem connection 4-inverted sealing ring 4.1-inside of the lower end of the inverted sealing ring 4.2-outside of the lower end of the inverted sealing ring 5-anti-rotation guide sleeve 5.1-outside of the anti-rotation guide sleeve 5.2-inside of the anti-rotation guide sleeve 6-combined packing 7-packing gland 8- Packing plate 9-packing bolt 10-packing nut 11-bracket 12-holder 13-moving rod 13.1-anti-rotation guiding part 13.2-moving rod connecting ...
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The invention relates to a Y-type stop valve. The stop valve comprises a valve body 1, a seat ring 2, a valve element rod 3, an inverted sealing ring 4, an anti-rotation guide sleeve 5, combined packing 6, a clamping part 12, a movable rod 13, a support frame 11 and a driving part. The seat ring 2 is fixedly connected with the valve body 1, and the inverted sealing ring 4 is compressed into the valve body 1 through the anti-rotation guide sleeve 5, the valve body 1 and the valve element rod 3 are both of an integrated structure, a valve element and a valve rod are combined into one, when the stop valve is switched off, a valve-element sealing surface 3.1 and a seat-ring sealing surface 2.1 cooperate and form a sealing pair, when the stop valve is completely switched on, an upper sealing surface 3.2 of the valve element rod 3 and the inverted sealing ring 4 form sealing, the clamping part 12 is spherically articulated with the movable rod 13, and the upper end of the movable rod 13 andthe driving part form a kinematic pair. Through the above structure design, the structure of the Y-type stop valve is simplified, the technical problems are solved that the sealing surface of a Y-typestop valve is prone to erosive wear and the valve is prone to internal leakage and external leakage, and the service life of the valve is prolonged.
Description
technical field [0001] The application relates to the field of valves, in particular to a Y-type stop valve. Background technique [0002] The globe valve has a wide range of uses, and is the most direct and reliable valve type among all valves. It is not only suitable for medium and low pressure, but also suitable for low temperature, high temperature, high pressure, ultra-high pressure and other working conditions. The sealing principle of the globe valve is to rely on the transmission mechanism to transmit the force to the sealing surface of the valve disc through the valve stem. The sealing surface of the valve disc and the sealing surface of the valve seat form a forced seal through the principle of extrusion elastic deformation, and there is no friction on the sealing surface. The seal is reliable. Y-type globe valve is a kind of globe valve. Since Y-type globe valve has a nearly linear flow path design, it has low flow resistance and higher flow capacity than ordinar...
Claims
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IPC IPC(8): F16K41/02F16K1/32F16K1/14
CPCF16K1/14F16K1/32F16K41/02
Inventor 汪新春张耀辉李碧李新福杨硕王军杨子穆春阳郭风忠高阳
Owner WUZHONG ZHONGCHUANG VALVES