Safety double-sealed ball valve

A double-sealing, ball valve technology, applied in valve details, valve device, valve shell structure and other directions, can solve the problems of high-risk chemical product leakage, valve body burst, pressure can not be discharged, etc., to achieve compact and simple structure, reliable bilateral sealing, Simple opening and closing operation
CN104154264AInactive Publication Date: 2014-11-19ζ΄ͺε…ƒη”Ÿ
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ζ΄ͺε…ƒη”Ÿ
Publication Date
2014-11-19
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a safety double-sealed ball valve which comprises a valve body, a ball body (7) and a switch body. The valve body comprises an inlet valve body (1) and an outlet valve body (2) which are located at the upstream end and the downstream end of the ball body (7), the axial direction of the inlet valve body (1) and the axial direction of the outlet valve body (2) are perpendicular to the axial direction of the switch body, a gasket (9) perpendicular to the axial direction of the valve body is arranged between the inlet valve body (1) and the outlet valve body (2), a sealing device is arranged between the valve body and the ball body (7) and comprises a spring, an annular supporting ring, a valve seat and an O-shaped sealing ring, the spring, the annular supporting ring and the valve seat are sequentially arranged in the axial direction of the valve body, the O-shaped sealing ring is arranged in a groove in the outer wall of the annular supporting ring, the switch body is embedded in the outlet valve body (2), the axial direction of the switch body is perpendicular to the axial direction of the valve body, and the switch body penetrates through the center of the ball body (7). Under the condition that pressure rises in a cavity in the valve body abnormally, the ball valve can discharge pressure rapidly from an upstream or downstream pipeline, and safety protection is achieved.
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Description

technical field

[0001] The invention relates to a valve, in particular to a safety double-seal ball valve. Background technique

[0002] The ball valve was born in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal , steel and other industries occupy a pivotal position in the national economy. It has an opening and closing part driven by the valve stem. The opening and closing part is a sphere with a circular through hole or channel passing through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be rotated 90 degrees and a small rotational torque can be closed tightly. Ball valves are most suitable for on-off and shut-off valve...

Claims

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