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Valve with carbon-graphite sealing rings

A sealing ring, carbon graphite technology, applied in the direction of engine sealing, sliding valve, valve details, etc., can solve the problems of valve jamming, poor guidance, high thermal expansion coefficient, and achieve the effect of reducing procurement costs and reducing spring stiffness requirements.

Pending Publication Date: 2021-02-05
SHANGHAI AUTOMATION INSTRAION CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the metal sealing ring of the ordinary sleeve control valve has high friction, high coefficient of thermal expansion, poor wear resistance, poor guiding, and it is easy to scratch the inner surface of the sleeve under high temperature conditions, causing the valve to jam

Method used

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  • Valve with carbon-graphite sealing rings
  • Valve with carbon-graphite sealing rings
  • Valve with carbon-graphite sealing rings

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0015] figure 1 It is a side view of the carbon graphite sealing ring structure of the valve with carbon graphite sealing ring of the present invention, please refer to figure 1 , a valve with a carbon-graphite sealing ring 1, which includes: a valve core 2 is installed in the valve seat, and a plurality of carbon-graphite sealing rings 1 are installed on the outer wall of the valve core 2, and the carbon-graphite sealing ring 1 has a connecting portion connected to Upper and lower staggered tongue and groove connections. Its connection structure is as figure 1 The part shown, the connection part is the part where the carbon graphite seal ring 1 is connected and closed, and there are protrusions at both ends, the protrusion at one end is at the top, and the protrusion at the other end is at the bottom. After closing, the protrusion at the top is at the bott...

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Abstract

The invention discloses a valve with carbon-graphite sealing rings. The valve is characterized in that a valve element is arranged in a valve seat, the multiple carbon-graphite sealing rings are arranged on the outer side wall of the valve element, each carbon-graphite sealing ring is provided with a connecting part, and the connecting parts are connected with each other in an up-and-down staggered tenon-and-groove manner. The problem of valve sealing in the prior art is solved, the multiple carbon-graphite sealing rings are installed on the outer side wall of the valve element, the connectingparts of the carbon-graphite sealing rings are connected in the up-and-down staggered tenon-and-groove manner, and the outer edges of the sealing rings press the inner wall of a sleeve through elastic force of materials so that sealing can be formed. A multi-sealing structure mode is adopted, the guide area is increased, the sealing performance is improved, the control capacity and stability of the valve are also improved, and due to the fact that the self-lubricating performance of an M300T carbon graphite material is good, the requirement for the spring rigidity of an executing mechanism can be reduced, and the purchasing cost of the executing mechanism is reduced.

Description

technical field [0001] The invention relates to a valve, in particular to a valve with a carbon graphite sealing ring. Background technique [0002] The metal sealing ring of the ordinary sleeve control valve in the prior art has high friction, high coefficient of thermal expansion, poor wear resistance, poor guiding, and it is easy to scratch the inner surface of the sleeve under high temperature conditions, causing the valve to jam. [0003] Carbon graphite sealing material, its matrix material M300T carbon graphite material is mainly composed of amorphous carbon and crystalline carbon raw materials, the material has high hardness, good self-lubricating performance, good mechanical strength, good wear resistance, and the maximum service temperature reaches 600 °C. [0004] Therefore, the present invention strives to provide a valve using a carbon-graphite sealing ring to achieve multi-layer sealing. Contents of the invention [0005] Above-mentioned purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/26F16K3/30F16K3/314F16K3/316F16K27/04F16J15/30
CPCF16J15/30F16K3/265F16K3/267F16K3/30F16K3/314F16K3/316F16K27/041
Inventor 宋辉赵旭东陈锋王旭谭坤张冬明罗双燕吴逸超殷国华赵万福
Owner SHANGHAI AUTOMATION INSTRAION CO LTD
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