Valve element assembly suitable for high-temperature working condition and adjusting valve
A high-temperature working condition and valve core component technology, which is applied in the field of regulating valves, can solve problems such as jamming, increased valve operating force, inconsistent high-temperature expansion of the valve core, graphite ring and cage, etc., to improve adjustment accuracy and reduce Effect of Valve Operating Force
Pending Publication Date: 2020-10-09
SUFA TECH IND CNNC
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Problems solved by technology
In the industry, when the valve core of the regulating valve is under high temperature conditions, the valve core, the graphite ring and the cage often have inconsistent expansion due to high temperature, resulting in jamming, increased valve operating force, and even fracture of the valve stem, which seriously affects Improve the adjustment accuracy and service life of the control valve
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 As shown, the present invention provides a spool assembly suitable for high-temperature working conditions, including a spool 10 , a graphite ring assembly 20 , a spring 30 , a guide ring 40 , and a lower spool 50 .
[0035] Such as Figure 1-Figure 4 , Figure 2a , Figure 2b As shown, the graphite ring assembly 20 is nested in the annular groove a 12 of the valve core 10 , and the spring 30 supports the graphite ring assembly 20 so that the graphite ring assembly 20 fits against the inner wall of the cage 70 . The guide ring 40 is nested in the annular groove a of the valve core 10 , and the spring 30 supports the guide ring 40 so that the guide ring 40 fits against the inner wall of the cage 70 .
[0036] Such as image 3 As shown, the spool 10 has a balance hole 11, an annular groove a12, a spring support hole a...
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The invention belongs to the valve technology, and particularly relates to a valve element assembly suitable for the high-temperature working condition and an adjusting valve with the same. The valveelement assembly comprises a valve element, the section of the valve element is of an inverted-T-shaped structure, a through hole with the Y-shaped section is formed in the valve element, two channelsin the upper portion of the through hole are in communication with the top surface of the valve element, one channel in the lower portion of the through hole extends to the bottom surface of the valve element, four parallel annular grooves are formed in the upper half portion of the valve element, a graphite ring integral assembly is arranged in each annular groove, and the lower half portion ofthe valve element is sleeved with a lower valve element. The valve element assembly has the remarkable effects that in the working process of the adjusting valve, the reasonable gaps between the valveelement and a cage sleeve and between the lower valve element and the cage sleeve are formed, a guide ring makes contact with the cage sleeve, a spring provides contact force, and the phenomenon of jamming caused by inconsistent deformation of the valve element, the lower valve element, a graphite ring and the cage sleeve under the high-temperature working condition is avoided, and dynamic guiding of the valve element and the lower valve element is achieved. Operation force of the valve is reduced, and adjusting precision of the valve is improved.
Description
technical field [0001] The invention belongs to valve technology, and in particular relates to a valve core assembly suitable for high-temperature working conditions and a regulating valve with the valve core assembly. Background technique [0002] In nuclear power, petrochemical, coal chemical, hydropower and other industries, there are a large number of regulating valves, which can regulate the pressure, flow and temperature of the medium. Adjustment accuracy, inherent flow characteristics, anti-vibration ability, etc. are important indicators for evaluating the performance of control valves. The clearance control between the spool and the cage and the design of the guide structure are closely related to the above evaluation indicators. In the industry, when the spool of the regulating valve is under high temperature conditions, the spool, graphite ring and cage often have inconsistent expansion due to high temperature, resulting in jamming, increased valve operating forc...
Claims
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IPC IPC(8): F16K1/36F16K1/32
CPCF16K1/36F16K1/32
Inventor 龚宝龙吴辉杨雪华徐兴华干瑞彬
Owner SUFA TECH IND CNNC