Dynamic sealing gas gate valve

A dynamic sealing, gate valve technology, applied in sliding valves, valve devices, engine components, etc., can solve the problems of high sealing requirements, gas leakage, rapid wear of sealing rings, etc., to achieve flexible opening and closing, guarantee leakage, guarantee The effect of system security

Inactive Publication Date: 2011-09-21
HUNAN JINZHONG ENVIRONMENTAL PROTECTION EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Gas valves on gas pipelines have high sealing requirements. At present, the gas valves used are static seals, that is, there are raised sealing rings on the valve body and valve plate. When the gas valve with this sealing ring is used, the valve plate will The opening is not flexible and convenient. After a period of use, the sealing ring wears out quickly, resulting in a gap, which is likely to cause gas leakage and safety accidents

Method used

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Embodiment Construction

[0017] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 As shown, a dynamic sealing gas gate valve includes a valve body 4, a gate valve plate 8, and a cylinder 1. Gate valve plate sealing boxes 3 are installed on both sides of the gate valve plate of the valve body 4, and the cylinder 1 is fixed on the sealing box 3. The cylinder piston rod 2 is connected to the gate valve plate 8; there is an annular groove 14 on the contact surface between the valve body 4 and the gate valve plate 8, and there is a movable sealing ring 15 in the annular groove 14, and a connecting pipe is opened on the valve body 4 16 communicates with the annular groove 14; the air cylinder 11 is installed on the valve body 4 through the valve plate 10 with bolts 23, and the valve plate 10 is provided with a valve plate connecting pipe 17, and the valve plate connecting pipe 17 communicates with the connecting pipe 16, and the air oil cylinder 11 The oil port 24 com...

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Abstract

The invention discloses a dynamic sealing gas gate valve which comprises a valve body, a gate valve plate and a cylinder, wherein both sides of the gate valve plate of the valve body are provided with sealing boxes of the gate valve plate; the sealing boxes are provided with electric connecting pressure gauges; and the valve body is provided with a mobile sealing ring and a guidance device of thegate valve plate. The invention has the advantages that: when the valve is closed, the mobile sealing ring is pressed tightly on the valve plate due to the action of oil pressure in order to ensure tight sealing between the valve plate and the valve body and leakage; when the valve needs opening, a gas cylinder relieves pressure, hydraulic oil refluxes; the mobile sealing ring is depressurized, the valve plate is easily opened for realizing dynamic sealing of the valve; both sides of the gate valve plate of the valve body are provided with the sealing boxes which ensure that only a small quantity of gas leaks in the sealing boxes rather than outside the valve body in the processes of opening and closing the gate valve plate; moreover, the sealing boxes are provided with the electric connecting pressure gauges for detecting gas leakage, executing early warning and ensuring system safety; and the valve body is provided with the guidance device of the gate valve plate for ensuring that the gate valve plate is flexibly opened and closed without blockage.

Description

technical field [0001] The invention relates to a gate valve. Background technique [0002] Gas valves on gas pipelines have high sealing requirements. At present, the gas valves used are static seals, that is, there are raised sealing rings on the valve body and valve plate. When the gas valve with this sealing ring is used, the valve plate will Opening is inflexible and convenient, and after a period of use, the sealing ring wears out quickly, resulting in a gap, which easily causes gas leakage and safety accidents. Contents of the invention [0003] The object of the present invention is to provide a dynamic sealing gate valve. [0004] The object of the present invention is achieved in the following manner: a dynamic sealing gas gate valve, including a valve body, a gate valve plate, and a cylinder, and a gate valve plate sealing box is installed on both sides of the gate valve plate of the valve body, and the cylinder is fixed on the sealing box , the cylinder pisto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/16F16K3/30
Inventor 钟汉光
Owner HUNAN JINZHONG ENVIRONMENTAL PROTECTION EQUIP CO LTD
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