Pilot operated safety valve of hydraulic support
A pilot-operated safety valve and hydraulic support technology, applied in safety valves, balance valves, valve devices, etc., can solve the problems of reducing the limitations of use conditions, occupying extra space, inconvenient installation, etc., to prevent failures, ensure safety, The effect of improving usability
Pending Publication Date: 2022-08-05
张天云
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AI Technical Summary
Problems solved by technology
[0004] Existing pilot-operated safety valves are generally installed vertically, and the pilot valve is installed outside the pipeline, which usually requires additional space in addition to the pipeline. When the pipeline is laid out in a narrow space or embedded in the wall, Sometimes it is inconvenient to install, sometimes it cannot be installed at all, which greatly reduces the limitations of the use conditions
Method used
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Embodiment approach
[0041] As an embodiment of the present invention, the hydraulic support pilot-operated safety valve further includes:
[0042] Main valve 2, the main valve 2 includes a threaded pipe 21, a movable plug 22, an A baffle 23 and a B baffle 24. The inner wall of the threaded pipe 21 is provided with internal threads, and is concentrically fixed to the center of the valve body 1 through a bracket 211. The bracket 211 and the The area between the valve bodies 1 constitutes the main valve conduit 26;
[0043] The movable plug 22 is installed in the threaded pipe 21, and the outer wall is provided with an external thread matched with the threaded pipe 21;
[0044] The inner wall of the valve body 1 is located on both sides of the threaded pipe 21 and is fixed with a diameter adjustment ring 3, and the inner ring of the diameter adjustment ring 3 is matched with the movable plug 22;
[0045] The A baffle 23 and the B baffle 24 are respectively installed on the inner wall of the diamete...
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The invention belongs to the technical field of pilot operated safety valves, and particularly relates to a hydraulic support pilot operated safety valve which comprises a valve body. The valve body is tubular and has the same specification as a working pipeline; the two ends of the valve body are connected with a working pipeline through flanges. The main valve comprises a threaded pipe, a movable plug, a baffle A and a baffle B, internal threads are arranged on the inner wall of the threaded pipe, the threaded pipe is concentrically and fixedly connected to the center of the valve body through a support, and a main valve channel is formed in the area between the support and the valve body; the movable plug is installed in the threaded pipe, and the outer wall of the movable plug is provided with external threads matched with the threaded pipe. Diameter adjusting rings are fixedly connected to the positions, located on the two sides of the threaded pipe, of the inner wall of the valve body, and the inner rings of the diameter adjusting rings are matched with the movable plugs. According to the invention, the valve body is tubular, and the valve body is mounted on the working pipeline through the flange, so that compared with the prior art that a safety valve is mounted outside a pipeline, the space occupied by the valve body is greatly reduced, and the applicability is improved.
Description
technical field [0001] The invention belongs to the technical field of pilot safety valves, and in particular relates to a hydraulic support pilot safety valve. Background technique [0002] Pilot-operated safety valve is a kind of indirect load safety valve. It consists of a main valve and a pilot valve (also known as "auxiliary valve"). The main valve is driven by the medium discharged from the pilot valve. Because the pressure in the system is in the form of pulses, it is also called "pulse safety valve". On its own, the pilot valve itself is a direct-loaded safety valve. [0003] When the protected system is in normal operating condition. The slide valve in the pilot valve cavity is in the open state, and the system pressure is transmitted from the main valve inlet to the air chamber above the main valve disc (piston) through the lower conduit, the pilot valve cavity and the upper conduit. At this time, the gas pressure in the upper air chamber is equal to system pres...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K17/30F16K27/02
CPCF16K17/30F16K27/02Y02E10/20
Inventor 张天云缪夕睿
Owner 张天云