Corrugated tube stop valve

A bellows stop valve and bellows technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of large valve core, no bellows rupture alarm function, medium erosion and other potential safety hazards, so as to eliminate potential safety hazards , to ensure adjustability, to improve the effect of working life

Inactive Publication Date: 2016-03-30
XIAN AEROSPACE YUANZHENG FLUID CONTROL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the existing common bellows stop valve does not have the bellows rupture alarm function, has great potential safety hazards, and the valve core is severely washed by the medium when the valve is fully opened, and provides a valve with reasonable structure, convenient use and high safety. Good and long working life new bellows globe valve

Method used

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  • Corrugated tube stop valve
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Embodiment Construction

[0023] Such as figure 1 As shown, the bellows stop valve of the present invention is a low-in and high-out valve, including a handwheel 16, a valve stem 3, a packing assembly, a bellows assembly, a valve cover 10, a valve body 1 and The spool 4 and the valve body 1 are provided with an inlet 28, a vertical hole and an outlet 29 connected to each other. Under the rotation of the hand wheel 16, the valve stem 3 drives the spool 4 to move up and down in the vertical hole to realize the inlet 28. and the conduction or closure of the outlet 29, in order to ensure the tight sealing of the valve, the valve stem of the valve adopts two seals of the bellows assembly and the packing.

[0024] Such as figure 2 As shown, the packing assembly includes a stuffing box 14, a stuffing ring 15, a stuffing 17, and a packing gland 20. The stuffing 17 is installed in the stuffing box 14, and the stuffing 17 is in close contact with the valve stem 13 through the stuffing gland 20, so that the stu...

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Abstract

The invention discloses a corrugated tube stop valve which comprises a handle wheel, a valve rod, a stuffing assembly, a corrugated tube assembly, a valve cover, a valve body and a valve element which are arranged from top to bottom, wherein the stuffing assembly comprises a stuffing box, a stuffing ring, stuffing and a stuffing pressure cover; the stuffing is filled in the stuffing box; by virtue of the stuffing pressure cover, the stuffing is in tight contact with the valve rod, so that sealing between the stuffing and the valve rod is realized; a ring-shaped slot is formed in the stuffing ring, and is communicated with a Z-shaped runner arranged in the stuffing box, so that when a corrugated tube is cracked, a fluid medium in the stop valve flows to a pressure transmitter arranged at an outlet of the Z-shaped rubber through the ring-shaped slot and the Z-shaped runner, and therefore, leakage alarm is realized. Meanwhile, the invention designs a novel special ceramic valve element connecting structure; and hardness of high-toughness ceramic is greatly improved relative to hardness of a conventional overlaying hard alloy valve element, so that the service life of the valve element is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of valves, and is mainly used for dangerous fluids in the chemical and smelting industries, such as highly toxic, flammable, explosive, and highly corrosive gases, liquids, or gas-liquid-solid mixed fluids, and is mainly used for fluid pipelines. Cut and adjust. Background technique [0002] The bellows globe valve used in the chemical industry is very demanding, and there is an urgent need for a bellows globe valve with an adjustment function. When it is shut off, it must also achieve zero leakage sealing. Therefore, the requirements for the valve core seal are very high. The existing ordinary bellows globe valve It mainly realizes the cut-off function, and basically does not have it in terms of adjustment. If it is forced to adjust, the erosion of the sealing surface of the valve core by the medium is very serious under this working condition, and the working life is very short; in addition, the bellows st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K41/02F16K37/00
CPCF16K1/36F16K37/005F16K41/02
Inventor 王伟马锋岗王波杨振宁陈岐
Owner XIAN AEROSPACE YUANZHENG FLUID CONTROL
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