CN202992303U - High-strength composite membrane for pressure-reducing valve, and membrane component - Google Patents
High-strength composite membrane for pressure-reducing valve, and membrane component Download PDFInfo
- Publication number
- CN202992303U CN202992303U CN 201220673157 CN201220673157U CN202992303U CN 202992303 U CN202992303 U CN 202992303U CN 201220673157 CN201220673157 CN 201220673157 CN 201220673157 U CN201220673157 U CN 201220673157U CN 202992303 U CN202992303 U CN 202992303U
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- metallic shim
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Abstract
The utility model relates to a high-strength composite membrane for a pressure-reducing valve, and a membrane component. The membrane adopts an annular structure and comprises a metal gasket, a cotton cloth layer and two rubber composite layers, wherein the diameter of the cotton cloth layer is equal to the diameter of the rubber layers; the cotton cloth layer is positioned between the two rubber composite layers; the diameter of the metal gasket is less than the diameter of the rubber layers; and the metal gasket is positioned between the cotton cloth layer and one of the rubber composite layers. The utility model adopts the composite membrane, increases the metal gasket and enhances the rigidity of the inner side of the membrane, so that the inner side of the membrane can be sealed reliably by extruding an O-shaped ring.
Description
Technical field
The utility model relates to a kind of reduction valve compound diaphragm of high strength and diaphragm unit, utilize the compound diaphragm of rubber, cotton and metallic shim to have the advantages such as compressive strength is high, the pressure perception strong, sealing is reliable, can promote the use of in high outlet pressure reduction valve, comprise that liquid propellant rocket engine, satellite are at rail executive system, ground system test high-pressure pressure-reducing valve.
Background technique
In pressure-fed liquid rocket engine, reduction valve is the core component of motor for the propellant agent that will push after the high pressure air reducing of gas cylinder in tank, and reduction valve performance situation directly affects service behaviour and the reliability of motor.Diaphragm unit is used for the perception outlet pressure in reduction valve changes, development along with engine technology, to improving constantly of reduction valve outlet pressure and requirement in working life, sealing and structural strength to diaphragm unit require more and more higher, existing elastomer diaphragm is due to rigidity and strength deficiency, secondary seal can not be increased, seal request can't be satisfied.A kind of combined type elastomer diaphragm modular construction has been proposed for this reason, keep that original elastomer diaphragm sensed pressure ability is strong, on the basis of sealing reliability advantages of higher, by introduce metallic shim and high strength cotton layer in rubber combined layer, improved the compressive strength of diaphragm unit.
The model utility content
In order to solve existing reduction valve diaphragm unit rigidity and strength deficiency, can not satisfy the technical problem of seal request, the utility model provides a kind of reduction valve compound diaphragm unit of high strength, overcome the deficiency of prior art and structure, be the higher compound film sheet modular construction of a kind of compressive strength, improve the functional reliability of reduction valve.
Technical solution of the present utility model is:
A kind of reduction valve compound diaphragm of high strength, its special way is: described diaphragm is ring structure, comprise metallic shim, cotton layer and two-layer rubber combined layer, the diameter of described cotton layer and the equal diameters of rubber layer and cotton layer between two-layer rubber combined layer, the diameter of described metallic shim less than the diameter of rubber layer and metallic shim at cotton layer with wherein between the rubber combined layer of one deck.
Above-mentioned diaphragm is ring structure, comprise metallic shim, cotton layer and two-layer rubber combined layer, the diameter of described cotton layer and the equal diameters of rubber layer and cotton layer between two-layer rubber combined layer, the diameter of described metallic shim less than the diameter of rubber layer and metallic shim at cotton layer with wherein between the rubber combined layer of one deck; Described supporting component comprises pallet, gland, nut and O type circle, described pallet is positioned at diaphragm below and diameter less than rubber combined layer, described gland comprises head and bar section, described head is positioned at diaphragm top and diameter less than the gland of pallet, described bar section is passed behind the center of diaphragm and pallet and fastening nuts, described O type circle between gland head and diaphragm upper surface and diameter less than metallic shim.
The utility model advantage compared with prior art is:
1, the utility model has adopted compound film sheet, has increased metallic shim, has strengthened the rigidity of diaphragm inboard, makes the diaphragm inboard to realize the highly reliable sealing of diaphragm inboard by extruding O shape circle.
2, compressive strength and the sealing reliability of diaphragm unit have been strengthened.Use the relief valve function of this diaphragm unit reliable, compressive strength is high, sealability and the sensed pressure ability strong.
Description of drawings
Fig. 1 is the mounting structure schematic diagram of the compound diaphragm unit of high strength on reduction valve.
Embodiment
As shown in Figure 1, be a kind of reduction valve of the present utility model with the compound diaphragm unit of high strength, i.e. citation form of the present utility model, it is comprised of rubber combined layer 1, cotton layer 2, metallic shim 3, rubber o-ring 4, gland 5, pallet 6, nut 7 etc.Utilizing metallic shim 3 to do metal frame liner, high strength cotton layer 2 does the structure of central core, the rubber combined layer 1 of upper and lower surface compacting and makes the compound diaphragm of high strength, the rigid construction that in diaphragm, ring utilizes metallic shim 3 is by rubber o-ring 7 sealings, and sealing reliability is enhanced.The outer of diaphragm unit is provided with the sealing tooth by the compression diaphragm seal that is threaded of valve body 8, diaphragm bearing 9, clamp sleeve 10, the sealing configuration technology maturation, and sealing reliability is high.This design takes full advantage of the rigidity of metal frame metallic shim 3, the intensity of cotton layer 2, sealing and the elasticity of rubber combined layer 1, has realized the optimal combination design of sensing element.
Diaphragm unit is formed by connecting by diaphragm, rubber o-ring 4, gland 5, pallet 6, nut 7, tightens the compression cushion rubber by at diaphragm and 5, gland, rubber o-ring 4 being set by nut 7, improves the sealing reliability of ring in diaphragm unit, and sealing reliability is high.By composite structural design, intensity, sealing reliability and the pressure perception of diaphragm unit are improved significantly.
The principle of such scheme is: diaphragm unit is used for the perception outlet pressure in reduction valve changes, and adjusts the spool aperture by push rod after comparing with spring force, realizes regulating reduction valve outlet pressure purpose.Diaphragm unit will bear the outlet pressure effect that is in dynamic adjustments when reduction valve adjusting work, diaphragm unit should keep higher intensity and sealing reliability in Dynamic Regulating Process.Diaphragm unit adopts composite structure, by increasing metallic shim and cotton at the elastomer diaphragm central core, improves the compressive strength of diaphragm, and in diaphragm, ring utilizes the metallic shim rigid construction to seal by rubber o-ring simultaneously, and in diaphragm, the sealing reliability of ring is enhanced.
The utility model structure innovation is strong, and effect is good, except can be applicable to liquid propellant rocket engine, all can promote the use of in high-pressure pressure-reducing valve in systems such as rail executive system, ground system tests at satellite.
Claims (2)
1. a reduction valve is with the compound diaphragm of high strength, it is characterized in that: described diaphragm is ring structure, comprise metallic shim, cotton layer and two-layer rubber combined layer, the diameter of described cotton layer and the equal diameters of rubber layer and cotton layer between two-layer rubber combined layer, the diameter of described metallic shim less than the diameter of rubber layer and metallic shim at cotton layer with wherein between the rubber combined layer of one deck.
2. a reduction valve is with the compound diaphragm unit of high strength, comprise diaphragm and supporting component, it is characterized in that: described diaphragm is ring structure, comprise metallic shim, cotton layer and two-layer rubber combined layer, the diameter of described cotton layer and the equal diameters of rubber layer and cotton layer between two-layer rubber combined layer, the diameter of described metallic shim less than the diameter of rubber layer and metallic shim at cotton layer with wherein between the rubber combined layer of one deck; Described supporting component comprises pallet, gland, nut and O type circle, described pallet is positioned at diaphragm below and diameter less than rubber combined layer, described gland comprises head and bar section, described head is positioned at diaphragm top and diameter less than the gland of pallet, described bar section is passed behind the center of diaphragm and pallet and fastening nuts, described O type circle between gland head and diaphragm upper surface and diameter less than metallic shim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220673157 CN202992303U (en) | 2012-12-08 | 2012-12-08 | High-strength composite membrane for pressure-reducing valve, and membrane component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220673157 CN202992303U (en) | 2012-12-08 | 2012-12-08 | High-strength composite membrane for pressure-reducing valve, and membrane component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992303U true CN202992303U (en) | 2013-06-12 |
Family
ID=48563483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220673157 Expired - Lifetime CN202992303U (en) | 2012-12-08 | 2012-12-08 | High-strength composite membrane for pressure-reducing valve, and membrane component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016806A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | High-strength composite diaphragm for pressure-reducing valve and diaphragm assembly |
-
2012
- 2012-12-08 CN CN 201220673157 patent/CN202992303U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016806A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | High-strength composite diaphragm for pressure-reducing valve and diaphragm assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |