High-temperature and high-pressure top-assembled ball valve

A high-temperature, high-pressure, top-loading technology, which is applied to valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as not solving existing problems, and achieve the effect of preventing valve seat rotation.

Pending Publication Date: 2017-12-19
上海伟伦阀门集团江苏有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it doesn't solve the existing problem

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  • High-temperature and high-pressure top-assembled ball valve
  • High-temperature and high-pressure top-assembled ball valve

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Embodiment Construction

[0022] Such as Figure 1-2 As shown, a high-temperature and high-pressure top-entry ball valve includes a valve body 1, a valve cover 2 arranged on the valve body 1, a valve stem 3 and an actuator 4. The valve cover 2 and the valve body 1 are fixedly connected by bolts, and the valve cover 2 A sealing ring 21 is provided between the valve body 1 and the valve body 1 . The actuator 4 includes a worm case 41 and a rotating wheel 42 arranged on the worm case 41 . A bracket 5 is provided between the worm case 41 and the valve cover 2 . Both ends of the bracket 5 are respectively connected to the worm case 41 and the valve cover 2 . The inner chamber of the valve body 1 is provided with a ball 6 and a valve seat assembly 7 which are tightly fitted. The sealing structure 9 on the seat 8, the sealing structure 9 includes a spring pressing plate 91, a spring 92 and a valve seat packing self-sealing structure 93 connected in sequence, the spring pressing plate 91 is movable on the val...

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Abstract

The invention provides a high-temperature and high-pressure top-assembled ball valve, and particularly relates to the technical field of ball valves. The high-temperature and high-pressure top-assembled ball valve comprises a valve body, a valve cover arranged on the valve body, a valve rod and an execution mechanism. An inner cavity of the valve body is provided with a ball and a valve seat assembly which are in sealing fit. The valve rod penetrates the valve cover, and the two ends of the valve rod are connected with the ball and the execution mechanism correspondingly. The valve seat assembly comprises a valve seat and a sealing structure arranged on the valve seat. The sealing structure comprises a spring pressing plate, a spring and a valve seat filler self-sealing structure, all of which are sequentially connected. The spring pressing plate is movably arranged on the valve seat, the valve seat is provided with a first threaded hole, and one end of the spring pressing plate is provided with an outer thread matched with the first threaded hole and inserted in the first threaded hole, and the valve seat filler self-sealing structure is located in a gap between the valve seat and the valve body. According to the high-temperature and high-pressure top-assembled ball valve, the pre-tightening specific pressure between the valve seat and the ball can be adjusted, and the ball and the valve seat can be better sealed.

Description

technical field [0001] The invention belongs to the technical field of ball valves, in particular to a high-temperature and high-pressure top-loading ball valve. Background technique [0002] Top entry ball valves are widely used in oil and natural gas pipelines, and in oil extraction, oil refining, petrochemical, chemical, chemical fiber, metallurgy, electric power, nuclear power, food and paper making and other devices. The top entry ball valve is easy and quick to disassemble on the pipeline, and the maintenance is convenient and quick. When the valve fails on the pipeline and needs to be repaired, it is not necessary to disassemble the valve from the pipeline, only the bolts and nuts of the middle flange are removed, the valve cover and stem assembly are removed from the valve body, and then the ball and valve are taken out. seat assembly. The ball and seat can be repaired online. This repair saves time and minimizes losses in production. But the existing ball valve ...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/20
CPCF16K5/0636F16K5/0663F16K5/201
Inventor 赵波李成鑫季明生
Owner 上海伟伦阀门集团江苏有限公司
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