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Corrugated pipe assembly and valve

A bellows assembly and bellows technology, applied in the direction of valve details, valve devices, engine components, etc., can solve the problems of poor sealing effect, cracking of welds, etc., and achieve the effects of prolonging service life, avoiding leakage, and facilitating positioning welding

Pending Publication Date: 2019-03-29
NEWAY VALVE SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the welded part of the bellows assembly in the valve in the prior art is prone to be directly affected by the pressure of the fluid, etc., resulting in cracking of the welded part and poor sealing effect defects, thereby providing a bellows assembly and a valve

Method used

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  • Corrugated pipe assembly and valve
  • Corrugated pipe assembly and valve
  • Corrugated pipe assembly and valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a valve, such as figure 1 and figure 2 As shown, it includes: valve body 1, valve cover 2, valve stem 3 and bellows assembly. The valve cover 2 is detachably connected to the valve body 1; the valve stem 3 is connected to the external actuator and the valve core through transmission; By arranging the bellows 41 inside the valve cover 2, the space of the valve cover 2 is fully utilized, the height of the valve body 1 is reduced, and the operability of overlay welding on the sealing surface of the valve body 1 or valve seat welding is improved.

[0057] Such as figure 1 As shown, the bellows assembly in this embodiment includes: a bellows 41 , a sleeve 42 , a blocking assembly and a fixing part. Among them, the bellows 41 is sleeved and fixed on the valve stem 3; the sleeve 42 is sleeved outside the bellows 41, and is fixedly connected with the axial outer side of the bellows 41 away from the valve body 1 through a fixed part, and the sleeve 4...

Embodiment 2

[0073] This embodiment provides a valve. Compared with the structure of the valve provided in the embodiment, the only difference lies in the arrangement of the blocking component of the bellows assembly, and the rest of the structure of the valve is the same as that in embodiment 1.

[0074] Such as Figure 7 As shown, the blocking component in this embodiment is a second boss 421 arranged on the inner peripheral surface of the sleeve 42 and extending radially inward thereof, and the second boss 421 abuts against the axial end of the first connecting member 411 The fixing part fixedly connects the second boss 421 and the axial end of the first connecting piece 411 , and the second boss 421 of the sleeve 42 and the inner wall of the valve cover 2 have a second gap 424 and are installed in the valve cover 2 . It should be noted that the radially inner side refers to figure 1 In the direction close to the valve stem 3.

[0075] Such as Figure 7As shown, the fixing part in th...

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Abstract

The invention discloses a corrugated pipe assembly and a valve. The corrugated pipe assembly comprises a corrugated pipe, a sleeve pipe and a blocking assembly, wherein the sleeve pipe sleeves outsidethe corrugated pipe and is fixedly connected with the axial outer side, away from the valve body, of the corrugated pipe through a fixing part; and the blocking assembly is arranged between the corrugated pipe and the sleeve pipe, at least partial blocking assembly is located on the axial inner side of the fixing part, and the blocking assembly is used for preventing fluid in the valve from directly acting on the fixing part. The blocking assembly is arranged on the axial inner side of the fixing part, and fluid in the valve acts on the blocking assembly firstly, so that the fixing part is prevented from being directly acted by the fluid; and the fluid pressure acting on the fixing part is reduced through the dispersion of the blocking assembly, so that the phenomenon of leakage caused bycracking of the fixing part is avoided, and the service life of the corrugated pipe assembly is prolonged.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a bellows assembly and a valve. Background technique [0002] Most of the sealing elements in the valve are bellows components. Since the bellows are mechanically shaped by seamless or longitudinally welded pipes, it not only absorbs and compensates static displacement, dynamic movement, thermal expansion and vibration in the piping system , and can transmit liquid or gas under high pressure or vacuum state, so that the sealing effect of the bellows is much higher than that of the packing. [0003] The valve in the prior art includes: a valve body, the valve body is horizontally provided with an inlet and an outlet, the upper part is open, and is fixedly connected to the valve cover through bolts, the upper part of the valve cover is connected to the valve stem through threads, and the bottom of the valve stem is provided with a connecting rod. When the bottom is in contact with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/10
CPCF16K41/10
Inventor 王雪枫
Owner NEWAY VALVE SUZHOU