A ball valve working sealing assembly with an elastic central hole

A technology of elastic center and sealing components, which is applied to valve devices, engine components, cocks including cut-off devices, etc., can solve problems such as poor sealing performance, affecting sealing performance, and changes in contact fit, so as to optimize the sealing performance of ball valves, The effect of optimizing sealing performance and prolonging service life

Active Publication Date: 2022-03-08
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main problem of the sealing assembly is that in the actual manufacturing process, the movable sealing ring and the fixed sealing ring of the ball valve are often in contact with each other due to insufficient machining accuracy of the ball valve axis and the ball valve valve, and deformation of the material under the action of pressure water. The degree changes, and leads to uneven local force, resulting in water leakage, affecting the sealing performance, and the service life is relatively short
Therefore, the existing ball valve seals have the problems of poor sealing performance and short service life

Method used

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  • A ball valve working sealing assembly with an elastic central hole
  • A ball valve working sealing assembly with an elastic central hole
  • A ball valve working sealing assembly with an elastic central hole

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Embodiment

[0020] Example: a ball valve working sealing assembly with an elastic center hole, the structure is as follows Figure 1 to Figure 4 As shown in the figure, it includes a movable sealing ring 1 movably connected with the ball valve body and a fixed sealing ring 2 fixed on the valve valve of the ball valve. The inside of the sealing ring 2 is provided with a second central hole 21 that penetrates through the ring. When the materials of the movable sealing ring 1 and the fixed sealing ring 2 are deformed under the action of pressure water, the first central hole 11 and the second central hole 21 The existence of the movable sealing ring 1 and the fixed sealing ring 2 can compensate their own deformation by extruding the deformation of the two central holes, so as to effectively control the contact fit between the movable sealing ring 1 and the fixed sealing ring 2 of the ball valve, and optimize the sealing of the ball valve. For the purpose of performance, the movable sealing r...

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Abstract

The invention discloses a working sealing assembly of a ball valve with an elastic central hole, comprising a movable sealing ring (1) movably connected with a ball valve body and a fixed sealing ring (2) fixed on a ball valve valve, the movable sealing ring The inside of (1) is provided with the first central hole (11) of annular penetration, and the interior of the fixed sealing ring (2) is provided with the second central hole (21) of annular penetration; the first central hole ( 11) and the second center hole (21) are formed with two circles on the cross-section of the central axis of the movable seal ring (1), and the line connecting the centers of the two circles passes through the movable seal ring (1) and the fixed seal ring (2) contact parts. The invention has the advantages of good sealing performance and long service life.

Description

technical field [0001] The invention relates to a ball valve seal, in particular to a ball valve working seal assembly with an elastic central hole. Background technique [0002] Inlet ball valves are widely used in high-head hydropower stations with a still water head greater than 250m. Because the valve is cylindrical, the inner diameter is the same as the diameter of the steel pipe, and the hydraulic loss during overcurrent is close to zero, so it is especially suitable for high flow rates. Modern ball valves generally adopt a horizontal shaft arrangement, which is mainly composed of valve shell, valve and shaft end, sealing components, operating mechanism, etc. The valve is a rotating sphere, which is used to block water when the water channel is closed. The cylindrical hole in the center of the sphere and the diameter of the water channel pass through, there is no water blocking member, and the head loss is small. According to the different sealing forms, it is divided...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/04F16K5/18
CPCF16K5/18F16K5/188F16K5/04F16K5/0478
Inventor 张飞丁光付强张翼王义丹陈宇加
Owner STATE GRID CORP OF CHINA
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