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Sealing device with stiffener

A technology of sealing device and stiffener, which is applied in the direction of engine sealing, valve device, mechanical equipment, etc., can solve the problems of inability to maintain contact and large bending of sealing members.

Active Publication Date: 2010-12-15
FISHER CONTROLS INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the reverse flow direction, the total deflection of the sealing member in the reverse flow direction may be too large to maintain contact with the movable flow control member tapered edge

Method used

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  • Sealing device with stiffener
  • Sealing device with stiffener
  • Sealing device with stiffener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] figure 1 is a cross-sectional view of a portion of a known butterfly valve 100 . figure 1 The butterfly valve 100 shown in can be used to control the flow rate and / or pressure of fluids such as natural gas, oil, water, etc. in high temperature environments. As such, butterfly valve 100 may be fabricated from a material, such as stainless steel, that is capable of withstanding the environment described above.

[0015] As shown in Figure 1, the butterfly valve 100 has a valve disc 102 (eg, a movable flow control member) on which relatively high pressure fluids may occur. The butterfly valve 100 also includes a valve body 104 and a sealing structure 106 connected to the valve body 104 . The sealing structure 106 includes a sealing retainer 108 and a sealing ring 110 , the sealing structure 106 is arranged to form a fluid seal between the valve disc 102 and the sealing ring 110 .

[0016] The valve disc 102 may be mounted eccentrically to the valve 100 via the shaft memb...

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PUM

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Abstract

A sealing device for increasing the stiffness of the seal is disclosed. It comprises a clamping portion configured to be rigidly coupled to a body of a fluid control device, and a flexible portion extending from the clamping portion and having a curved sealing surface configured to seal against a movable flow control member associated with the fluid control device, wherein the flexible portion isconfigured to have a first stiffness in a first flow direction and a second stiffness in a second flow direction.

Description

technical field [0001] The present disclosure applies to sealing devices, and more particularly to a device for increasing the stiffness of a seal. Background technique [0002] Often, in industrial processes, such as oil and gas pipeline distribution systems, chemical processing plants, etc., it is necessary to control the transfer of fluids. In some process control systems, process fluid control devices, such as butterfly valves, provide a means of controlling fluid transfer, specifically, may provide shutoff capability in both the forward and reverse fluid flow directions . While many process fluid control devices provide shutoff capability in both forward and reverse flow directions, these process fluid control devices may not provide the same degree of shutoff in both flow directions. For example, a butterfly valve can provide a shutoff capability of up to 300 psi pressure drop in the forward flow direction, but can only provide a shutoff capability of up to 100 psi p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/32F16K1/226F16J15/08
CPCF16K1/2266F16J15/0887
Inventor 詹森·吉恩·奥伯丁道格拉斯·J·博伊德
Owner FISHER CONTROLS INT LLC