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Valve sealing structure capable of reducing abrasion and a method thereof

A valve sealing and valve technology, applied in the field of reciprocating contact dynamic sealing, can solve problems such as rising maintenance costs

Active Publication Date: 2020-04-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of technology, the industry has put forward more stringent requirements for sealing. Frequent replacement, disassembly and replacement of sealing packing will cause an increase in maintenance costs. In order to save maintenance costs, the current research on valve sealing not only requires high reliability of sealing, but also requires Has a long working life

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  • Valve sealing structure capable of reducing abrasion and a method thereof
  • Valve sealing structure capable of reducing abrasion and a method thereof

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0037] Such as figure 1 As shown, it is a wear-reducing valve sealing structure provided in a preferred embodiment of the present invention, which mainly includes a runner 1, a fixed baffle 2, a movable gland 3, a valve bonnet 4, and a spring set 5 , packing 7, movable sleeve 8, valve stem 9, valve body 10 and valve core 11.

[0038] The fixed baffle 2 is a cover body with a through hole, and the inside of the cover body is hollow as a moving space for the movable gland 3 . The fixed baffle 2 is fixed on the top of the valve bonnet 4 through the bolt group 6 , and the lower end of the valve bonnet 4 is provided with a flange, which is fixed on the valve body 10 through the flange. An axial through channel is opened inside the valve bonnet 4 . Such as figure 2 As shown, the axial th...

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Abstract

The invention provides a valve sealing structure capable of reducing abrasion and a method thereof, and belongs to the field of valves. The sealing structure comprises an upper loading sealing device,a lower loading sealing device and a driving device. The upper loading sealing device and the lower loading sealing device are matched with each other under the action of the driving device so that the loading device unloads packing when the valve rod moves, packing abrasion of the sealing device is reduced and the service life of the sealing device is prolonged; at the moment when the valve is about to be fully opened and closed, the filler is in a gradual loading state; and at the moment when the valve is fully opened and closed, the filler is in a completely loaded state, and a good sealing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of sealing structures, in particular to a reciprocating contact dynamic seal and stuffing box sealing structure. Background technique [0002] In valves such as globe valves, the switching operation of the valve is realized through the driving of the valve stem. For manually operated valves, the valve stem often drives the valve through the rotation of the thread, so there is movement and friction between the valve stem and the packing, which leads to the packing. wear and tear. Once the packing has been worn for a long time, it will cause the consumption of the packing and the wear and damage of the sealing surface, which will cause the packing pressure plate to be insufficiently pressed, and the seal will fail, which will cause the working medium to leak out, which may cause equipment accidents and even cause Serious consequences for personal injury. [0003] The existing valve stem packing sealing devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/02F16K1/32F16K1/46F16K27/02
CPCF16K1/02F16K1/32F16K1/46F16K27/02
Inventor 金志江于龙杰钱锦远
Owner ZHEJIANG UNIV