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Vacuum regulating valve with ceramic valve element

A technology of vacuum adjustment and ceramic valve core, which is applied to the valve details, the parts in contact between the valve element and the valve seat, and the valve lift. Improved sealing performance, simple flow path, and low flow resistance

Pending Publication Date: 2021-11-16
CHINA NAT NUCLEAR URANIUM ENRICHMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the valve core and valve seat of ceramic material are not easy to process threads, so it is difficult to connect with other parts
This limits its application in corrosive media and long-term wear occasions, and its excellent corrosion resistance is limited by the structure and cannot be exerted.

Method used

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  • Vacuum regulating valve with ceramic valve element
  • Vacuum regulating valve with ceramic valve element
  • Vacuum regulating valve with ceramic valve element

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1As shown, the present invention provides a ceramic valve core vacuum regulating valve, including: valve body 1, valve seat cushion pad 2, valve seat 3, valve core lower cushion pad 4, valve core upper cushion pad 5, metal wear-reducing ring 6. Valve body nut 9, valve body stud 10, valve stem 11, disc spring 15, disc spring pressure plate 16, pressure plate nut 17, actuator 18, adjustment pad 19, pressure plate stud 21, leak detection hole 22, Bracket 24, valve body gasket 25, valve core lock nut 26, valve stem connection sleeve 27, valve core 28, valve seat lock nut 29, ceramic pressure pad wear-reducing ring 30, ceramic pressure pad 31, bellows and packing device; wherein, the bellows includes an upper bellows 13, a lower bellows 8, an upper bellows welding ring 12 and a lower bellows welding ring 7, and the packing de...

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PUM

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Abstract

The invention belongs to the field of uranium enrichment technology application, and particularly discloses a vacuum regulating valve with a ceramic valve element. A valve seat and the valve element are made of ceramic materials, and the valve seat is located in a valve body and is fixedly connected with the valve body; the valve element is located in the valve seat and is connected with the valve seat in a joint mode; a support is located above the valve body and is fixedly connected with the valve body; an actuating mechanism is located above the support, a valve rod is located in the support, and the valve rod is fixedly connected with the actuating mechanism and the valve element; a corrugated pipe and a packing device are arranged on the valve rod in a sleeving mode, the corrugated pipe is located in the support, the packing device is located above the corrugated pipe, the packing device is fixedly connected with the support, and the corrugated pipe is fixedly connected with the packing device; a belleville spring and a belleville spring pressing plate are arranged on the packing device in a sleeving mode, the belleville spring pressing plate is located above the belleville spring, and the belleville spring pressing plate is fixedly connected with the support. The valve element and the valve seat are made of the ceramic materials, so that the valve element and the valve seat have good abrasion resistance, high machining precision and good sealing performance.

Description

technical field [0001] The invention belongs to the application field of uranium enrichment technology, and in particular relates to a ceramic valve core vacuum regulating valve. Background technique [0002] Driven by the actuator, the valve stem of the electric vacuum regulating valve drives the valve core to move in a straight line. By changing the flow area between the valve core and the valve seat, the purpose of adjusting the medium flow and stabilizing the pressure behind the valve is achieved. [0003] At present, the valve core and valve seat of the vacuum regulating valve used in the feeding system of the uranium enrichment plant are mostly made of stainless steel, and there is no engineering ceramic valve core and valve seat applied to the uranium enrichment process. [0004] At the same time, most of the seals between the valve core and the valve seat of the existing vacuum regulating valve are metal hard seals. The required sealing force is large, and the proce...

Claims

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Application Information

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IPC IPC(8): F16K1/02F16K1/36F16K1/48F16K1/46F16K1/42F16K1/32F16K25/00F16K41/10F16K41/02G01M3/02
CPCF16K1/02F16K1/36F16K1/487F16K1/465F16K1/427F16K1/32F16K25/005F16K41/10F16K41/02G01M3/02
Inventor 段生鹏袁军李红彦王伟张杨郭卫中唐建郁峰封学智温伟翟微石彦华胡永亮范增祖
Owner CHINA NAT NUCLEAR URANIUM ENRICHMENT
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