CN102927360A - Dynamic seal structure of satellite valve - Google Patents
Dynamic seal structure of satellite valve Download PDFInfo
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- CN102927360A CN102927360A CN2012104337903A CN201210433790A CN102927360A CN 102927360 A CN102927360 A CN 102927360A CN 2012104337903 A CN2012104337903 A CN 2012104337903A CN 201210433790 A CN201210433790 A CN 201210433790A CN 102927360 A CN102927360 A CN 102927360A
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- valve
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- satellite
- sealing structure
- movable sealing
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Abstract
The invention discloses a dynamic seal structure of a satellite valve. The dynamic seal structure comprises a valve body (1), an O-shaped ring (2), a check ring (3), a press ring (4), a disc spring (5), a valve cover (6) and a valve rod (7). The O-shaped ring (2) and the check ring (3) are located between the valve body (1) and the valve rod (7), a medium cannot flow into a driving end by means of the sealing effect of the O-shaped ring (2), the conical surface of the press ring (4) is attached to the conical surface of the valve body (1), the O-shaped ring (2) and the check ring (3) are stopped from moving outwards, the press ring (4) and the valve cover (6) are pre-tightened through the disc spring (5), and an end face matching structure is arranged between the valve body (1) and the valve cover (6). The integral check ring and the sealing structure of the O-shaped ring and the check ring are adopted, the pressure-resistant capability is strong, and the sealing reliability is high.
Description
Technical field
The invention belongs to the valve seal technical field, particularly a kind of movable sealing structure of highly reliable, the easy assembling for satellite.
Background technique
The sealability of satellite valve movable sealing structure have influence on during the satellite filling Security and in the rail life-span, therefore require to have higher sealing reliability.Therefore the requirement that requires 30MPa working pressure and 45MPa checking pressure of satellite valve movable sealing structure requires to have higher safety reliability.In addition, the satellite valve size is little, and assembling difficulty is high, therefore requires to have the characteristics that are easy to assemble.
In existing satellite valve, generally design with reference to relevant criterion such as GB T 3452 " hydropneumatic with O shape rubber seal ".Back-up ring needs otch to install, and therefore exists back-up ring intensity not high, the problem that high pressure resistant reliability is not high.There is the hidden danger that affects sealing reliability in the incision fifth wheel that drops easily when repeatedly moving in addition.And O shape is enclosed and also there is the shortcoming that inconvenience is installed in back-up ring.Generally in the existing satellite valve adopt cooperating between valve rod and the pressure ring that valve rod is led, but have the shortcoming that scratches valve rod.
Movable sealing structure among the aerospace industry standard QJ2262.4-1992 " hand stop valve Pn35MPa; Dn8,10,15,20,25,32mm Angle Stop valves " designs according to GB T 3452, back-up ring also needs otch, has the shortcoming that affects sealing reliability and safety reliability.This valve leads to valve rod by cooperating between valve rod and the pressure ring, has the shortcoming that scratches easily valve rod.Valve body and the valve gap of this valve are threaded connection, and can't satisfy the requirement of satellite valve electron beam welding.
Therefore, for the above shortcoming that satellite valve movable sealing structure exists, need the movable sealing structure of a kind of highly reliable, easy assembling of development.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of movable sealing structure of highly reliable, easy assembling is provided.
Technical solution of the present invention is: a kind of satellite valve movable sealing structure comprises valve body, O shape circle, back-up ring, pressure ring, dish spring, valve gap and valve rod; O shape circle and back-up ring utilize the sealing effect of O shape circle, so that medium does not flow into drive end between valve body and valve rod; The conical surface of pressure ring and the conical surface of valve body are fitted, and stop O shape circle and back-up ring outwards to move; Adopt dish spring pretension between pressure ring and the valve gap; It is the end face cooperating structure between valve body and the valve gap.
Angle is 30 ° between the conical surface that the conical surface is fitted between described pressure ring and the valve body and the axis.
End face cooperating structure between described valve body and the valve gap adopts electron beam welding.
Gap between described pressure ring and the valve rod is monolateral 0.1mm.
Described movable sealing structure adopts double-deck " the O shape circle+back-up ring " structure.
Described valve rod positions by two back-up rings.
The material of described dish spring is 69111 steel bands.
The material of described O shape circle is ethylene-propylene diene copolymer M204.
The material of described back-up ring is nylon 1010.
The present invention compared with prior art, its beneficial effect is:
(1) the present invention has adopted O shape circle+back-up ring, Effective Raise sealing and reliability.Particularly, when adopting double layer O-shaped figure+back-up ring structure, have the high voltage resistance sealing property of twin-stage redundancy, so sealing reliability is higher, can satisfy the requirement of 30MPa working pressure and 45MPa checking pressure, sealability can reach 1 * 10
-4The level of Pa.L/s.
(2) the present invention has adopted all-in-one-piece back-up ring structure, and voltage endurance capability is strong, and safety reliability is high.And all-in-one-piece back-up ring structure is not easy to wear and tear fifth wheel, so that sealing reliability is high.
(3) the present invention has adopted ring structure, and the fitting surface of pressure ring and valve body is the conical surface, so that O shape circle and back-up ring can be easy to pack between valve body and the valve rod, therefore is easy to assembling.And do not have matching gap between pressure ring and the valve body, so that the Location accuracy of pressure ring is high.
(4) the present invention has adopted the dish spring that pressure ring is carried out pretension, can make the end face of valve body and valve gap fit to satisfy the requirement of electron beam welding, can prevent that again pressure ring is loosening, and be easy to assembling.
(5) the present invention has adopted two back-up rings that valve rod is led, and has avoided the shortcoming of easy scuffing valve rod, has improved sealing reliability.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1, hard sealing structure of the present invention comprises valve body 1, O shape circle 2, back-up ring 3, pressure ring 4, dish spring 5, valve gap 6 and valve rod 7.Media end is positioned at the left side, and drive end is positioned at the right side, utilizes the sealing effect of O shape circle, so that medium does not flow into drive end.In the present embodiment, O shape circle 2 and back-up ring 3 are two-layer, between valve body 1 and valve rod 7.
From media end, putting in order is followed successively by: first layer O shape circle 2, first layer back-up ring 3, second layer O shape circle 2, second layer back-up ring 3, pressure ring 4, dish spring 5, valve gap 6 and valve rod 7.The conical surface of the conical surface of pressure ring 4 and valve body 1 is fitted, and the angle between the conical surface and the axis is 30 °, and pressure ring 4 stops O shape circle 2 and back-up ring 3 outwards to move; Gap between pressure ring 4 and the valve rod 1 is monolateral 0.1mm; Adopt dish spring 5 pretensions between pressure ring 4 and the valve gap 6, dish spring 5 designs with reference to GB T 1972-2005 " butterfly spring ", and material is 69111 steel bands; Be the end face cooperating structure between valve body 1 and the valve gap 6, adopt electron beam welding.
Assembly process of the present invention is as follows: at first in O shape circle 2 and the inboard of back-up ring 3 and the outside of valve rod 7 smear 7804 an amount of lubricating grease, then O shape circle 2 and back-up ring 3 are packed into successively in the valve body 1, reinstall pressure ring 4, reinstall valve rod 7, reinstall dish spring 5 and valve gap 6, adopt frock that valve body 1 and valve gap 6 are compressed, adopt at last electron beam welding that valve body 1 and valve gap 6 is integrally welded.
The material of O shape of the present invention circle need be selected the higher rubber of hardness, and such as ethylene-propylene diene copolymer M204 etc., the material of back-up ring is nylon 1010.
After tested, the hard sealing structure of present embodiment can satisfy the requirement of 30MPa working pressure and 45MPa checking pressure, and sealability can reach 1 * 10
-4The level of Pa.L/s.
The unexposed technology of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (9)
1. a satellite valve movable sealing structure is characterized in that: comprise valve body (1), O shape circle (2), back-up ring (3), pressure ring (4), dish spring (5), valve gap (6) and valve rod (7); O shape circle (2) and back-up ring (3) are positioned between valve body (1) and the valve rod (7), utilize the sealing effect of O shape circle (2), so that medium does not flow into drive end; The conical surface of the conical surface of pressure ring (4) and valve body (1) is fitted, and stops the outwards motion of O shape circle (2) and back-up ring (3); Adopt dish spring (5) pretension between pressure ring (4) and the valve gap (6); Be the end face cooperating structure between valve body (1) and the valve gap (6).
2. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: angle is 30 ° between the conical surface that the conical surface is fitted between described pressure ring (4) and the valve body (1) and the axis.
3. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: the end face cooperating structure between described valve body (1) and the valve gap (6) adopts electron beam welding.
4. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: the gap between described pressure ring (4) and the valve rod (7) is monolateral 0.1mm.
5. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: described valve rod (7) positions by two back-up rings (3).
6. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: the material of described dish spring (5) is 69111 steel bands.
7. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: the material of described O shape circle (2) is ethylene-propylene diene copolymer M204.
8. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: the material of described back-up ring (3) is nylon 1010.
9. according to claim 1 a kind of satellite valve movable sealing structure, it is characterized in that: described movable sealing structure adopts double-deck " the O shape circle+back-up ring " structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104337903A CN102927360A (en) | 2012-10-31 | 2012-10-31 | Dynamic seal structure of satellite valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104337903A CN102927360A (en) | 2012-10-31 | 2012-10-31 | Dynamic seal structure of satellite valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927360A true CN102927360A (en) | 2013-02-13 |
Family
ID=47642233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104337903A Pending CN102927360A (en) | 2012-10-31 | 2012-10-31 | Dynamic seal structure of satellite valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927360A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105067A (en) * | 2016-11-25 | 2018-06-01 | 安徽美芝制冷设备有限公司 | Compressor and its assembly method |
| CN109058540A (en) * | 2018-10-16 | 2018-12-21 | 四川勃朗蜀威科技有限公司 | Corrosion-resistant direct-operated regulator equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311439A (en) * | 1997-05-08 | 1998-11-24 | Tomoe Gijutsu Kenkyusho:Kk | Shaft sealing device for butterfly valve |
| CN1719076A (en) * | 2005-07-26 | 2006-01-11 | 雅丽达阀门(天津)有限公司 | Butterfly valve |
| CN101737520A (en) * | 2009-12-25 | 2010-06-16 | 昆山维萨阀门有限公司 | Ultra-low temperature ball valve |
| CN201731166U (en) * | 2010-07-02 | 2011-02-02 | 浙江武荣阀门有限公司 | High-voltage and low-voltage sealing structure for valve rod |
| CN201973248U (en) * | 2011-02-10 | 2011-09-14 | 中国工程物理研究院化工材料研究所 | Hollow valve plug and powder material forming system |
-
2012
- 2012-10-31 CN CN2012104337903A patent/CN102927360A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311439A (en) * | 1997-05-08 | 1998-11-24 | Tomoe Gijutsu Kenkyusho:Kk | Shaft sealing device for butterfly valve |
| CN1719076A (en) * | 2005-07-26 | 2006-01-11 | 雅丽达阀门(天津)有限公司 | Butterfly valve |
| CN101737520A (en) * | 2009-12-25 | 2010-06-16 | 昆山维萨阀门有限公司 | Ultra-low temperature ball valve |
| CN201731166U (en) * | 2010-07-02 | 2011-02-02 | 浙江武荣阀门有限公司 | High-voltage and low-voltage sealing structure for valve rod |
| CN201973248U (en) * | 2011-02-10 | 2011-09-14 | 中国工程物理研究院化工材料研究所 | Hollow valve plug and powder material forming system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105067A (en) * | 2016-11-25 | 2018-06-01 | 安徽美芝制冷设备有限公司 | Compressor and its assembly method |
| CN108105067B (en) * | 2016-11-25 | 2019-09-06 | 安徽美芝制冷设备有限公司 | Compressor and its assembly method |
| CN109058540A (en) * | 2018-10-16 | 2018-12-21 | 四川勃朗蜀威科技有限公司 | Corrosion-resistant direct-operated regulator equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |