CN102518819A - Composite split type high-pressure sealing pair - Google Patents
Composite split type high-pressure sealing pair Download PDFInfo
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- CN102518819A CN102518819A CN2011104565905A CN201110456590A CN102518819A CN 102518819 A CN102518819 A CN 102518819A CN 2011104565905 A CN2011104565905 A CN 2011104565905A CN 201110456590 A CN201110456590 A CN 201110456590A CN 102518819 A CN102518819 A CN 102518819A
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Abstract
The invention relates to a composite split type high-pressure sealing pair, which comprises a valve seat, a valve spool base, a non-metal sealing ring and a metal fixing ring. An annular sealing groove is arranged on the valve spool base, and the non-metal sealing ring and the metal fixing ring are arranged in the annular sealing groove; a chamfer is arranged at one end, which is close to the valve seat, of the inner side surface of the metal fixing ring; an annular boss is disposed on the outer side surface of the metal fixing ring and corresponds to the chamfer; the outer diameter of the annular boss is slightly larger than the inner diameter of the non-metal sealing ring; the depth of the annular boss is smaller than that of the non-metal sealing ring; the inner wall of the annular sealing groove presses the chamfer of the metal fixing ring in an edge rolling manner; and an outwards protruded annular triangular step is arranged on the valve seat and is opposite to the non-metal sealing ring, and an inwards concave annular holding groove is arranged on the outer side of the triangular step. The composite split type high-pressure sealing pair can meet requirements of sealing of high-pressure media, and is reasonable in structure and reliable in performance.
Description
Technical field
The invention belongs to the valve seal field, it is secondary to relate to a kind of high pressure sealing, relates in particular to a kind of compound split type high pressure sealing pair.
Background technique
Phenomenons such as on the oxygen kerosene motor, engine operation pressure is high, and sealing requirements is tight, and the valve internal sealing pair is proposed requirements at the higher level, utilizes traditional metal-nonmetal seal style, and the easy generation distortion of nonmetal seal ring is big, come off.Because high-pressure system improves a lot to engine performance; The using scope of high pressure valve also has bigger purposes thereupon; Along with the development of space flight model technical merit, increasingly high to the employed pressure medium of space flight model, and sealing is also had higher requirement.Higher reliability and sealing, bearing capacity have become valve development in future direction by force.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in the background technique, the invention provides a kind of sealing that can satisfy high-pressure medium, compound split type high pressure sealing rational in infrastructure and reliable performance is secondary.
Technical solution of the present invention is: it is secondary to the invention provides a kind of compound split type high pressure sealing, comprises valve seat and mangetic core assembly, and its special way is: said mangetic core assembly comprises spool matrix, nonmetal seal ring and metal retaining ring; Said spool matrix is provided with the annular seal groove, and said nonmetal seal ring and metal retaining ring are arranged in the annular seal groove; It is inboard that said metal retaining ring is arranged on nonmetal seal ring; The inner side surface of said metal retaining ring is provided with chamfering near an end of valve seat; The corresponding position of the outer side surface of said metal retaining ring and chamfering is provided with annular boss; The external diameter of said annular boss is slightly larger than the internal diameter of nonmetal seal ring; The degree of depth of said metal retaining ring is greater than the degree of depth of nonmetal seal ring; The degree of depth of said annular boss is less than the degree of depth of nonmetal seal ring; The inwall of said annular seal groove is pushed down the chamfering of metal retaining ring through the mode of rolling; The position that said valve seat is relative with nonmetal seal ring is provided with the ring-type triangle step of evagination, and the arranged outside of said triangle step has the ring-type receiving groove of indent.
The outer wall bottom of above-mentioned annular seal groove is provided with a plurality of exhaust ports.
The material of above-mentioned nonmetal seal ring is teflon, polyimide, nylon, PVC-U, gathers trifluoro-ethylene or fluoroplastic.
A kind of compound split type high pressure sealing is secondary, comprises valve seat and mangetic core assembly, and its special way is: said mangetic core assembly comprises spool matrix, nonmetal seal ring and metal retaining ring; Said spool matrix outer side surface is provided with near first boss of valve seat with away from second boss of valve seat; The external diameter of said first boss is less than the external diameter of second boss; Said second boss is provided with chamfering away from an end of valve seat, and said metal retaining ring is arranged on the outer side surface of first boss and second boss and encases second boss from the second boss bi-side; Said metal retaining ring, first boss and spool matrix constitute the annular seal groove; Said nonmetal seal ring is arranged in the annular seal groove; The inner side surface of said metal retaining ring is provided with annular boss near the position of valve seat; The internal diameter of said annular boss is slightly larger than the external diameter of nonmetal seal ring; The position that said valve seat is relative with nonmetal seal ring is provided with the ring-type triangle step of evagination, and the arranged outside of said triangle step has the ring-type receiving groove of indent.
The material of above-mentioned nonmetal seal ring is teflon, polyimide, nylon, PVC-U, gathers trifluoro-ethylene or fluoroplastic.
The present invention's advantage compared with prior art is:
This compound split type high pressure sealing auxiliary-seat provided by the present invention is a Structural Hardware; Spool is to inlay nonmetallic material on the metallic matrix; In the sealing pair closed condition; The step of the specified altitude that designs on the valve seat can limit the amount of deformation of spool nonmetallic material, the inefficacy thereby the protection valve core sealed cover under high pressure is not destroyed, and be designed with the triangle seal groove in the spool metal support; Can guarantee nonmetal high-pressure medium leakage way blocking-up of tamping the back distortion, thereby guarantee effective sealing of high-pressure medium sealing.The present invention relates to a kind of compound split type high pressure sealing auxiliary structure design, can satisfy the sealing of high-pressure medium.This technology has been applied in the valve of oxygen kerosene motor at present, through checkout facility, allusion quotation examination and engine test checking, shows rational in infrastructure, reliable performance.For guaranteeing that the spool amount of deformation is controlled at given range, design special construction restriction spool amount of deformation is protected non-metal surfaces on valve seat, improves working life.
Description of drawings
First embodiment's that Fig. 1 compound split type high pressure sealing of the present invention is secondary structural representation;
Fig. 2 is the structural representation of the spool matrix of mangetic core assembly of the present invention;
Fig. 3 is the second secondary embodiment of a compound split type high pressure sealing of the present invention structural representation;
Wherein:
1-spool matrix; The nonmetal seal ring of 2-; 3-metal retaining ring; 4-triangle step; The 5-receiving groove; The 6-valve seat; The 7-exhaust port; 8-annular seal groove; The 9-chamfering; The 10-annular boss; The 11-inwall; 12-first boss; 13-second boss.
Embodiment
Referring to shown in Figure 1, compound split type high pressure sealing auxiliary structure figure of the present invention also is a preferred embodiment of the present invention.Mainly form by the nonmetal seal ring of valve seat 6, spool matrix 1, spool 2, metal retaining ring 3 etc.
Compound split type high pressure sealing provided by the present invention is secondary, comprises valve seat 6 and mangetic core assembly, and mangetic core assembly comprises spool matrix 1, nonmetal seal ring 2 and metal retaining ring 3; The spool matrix is provided with annular seal groove 8, and nonmetal seal ring 2 is arranged in the annular seal groove 8 with metal retaining ring 3; Metal retaining ring 3 is arranged on nonmetal seal ring 2 inboards; The inner side surface of metal retaining ring 3 is provided with chamfering 9 near an end of valve seat; The outer side surface of metal retaining ring 3 and chamfering 9 corresponding positions are provided with annular boss 10; The external diameter of annular boss 10 is slightly larger than the internal diameter of nonmetal seal ring 2; The degree of depth of metal retaining ring 3 is greater than the degree of depth of nonmetal seal ring 2; The degree of depth of annular boss 10 is less than the degree of depth of nonmetal seal ring 2; The inwall 11 of annular seal groove is pushed down the chamfering 9 of metal retaining ring 3 through the mode of rolling; Valve seat 6 and nonmetal seal ring 2 relative positions are provided with the ring-type triangle step 4 of evagination, and the arranged outside of triangle step 4 has the ring-type receiving groove 5 of indent.
The outer wall bottom of annular seal groove 8 is provided with a plurality of exhaust ports 7.
The material of nonmetal seal ring 2 is teflon, polyimide, nylon, PVC-U, gathers trifluoro-ethylene or fluoroplastic.
As another kind of implementation of the present invention, compound split type high pressure sealing provided by the present invention is secondary, comprises valve seat 6 and mangetic core assembly, and this mangetic core assembly comprises spool matrix 1, nonmetal seal ring 2 and metal retaining ring 3; Spool matrix 1 outer side surface is provided with near first boss 12 of valve seat with away from second boss 13 of valve seat; The external diameter of first boss 12 is less than the external diameter of second boss 13; Second boss 13 is provided with chamfering away from an end of valve seat, and the metal retaining ring is arranged on the outer side surface of first boss 12 and second boss 13 and encases second boss 13 from second boss, 13 bi-side; Metal retaining ring, first boss 12 and spool matrix constitute the annular seal groove; Nonmetal seal ring is arranged in the annular seal groove; The inner side surface of metal retaining ring 3 is provided with annular boss near the position of valve seat; The internal diameter of annular boss is slightly larger than the external diameter of nonmetal seal ring 2; Valve seat 6 and nonmetal seal ring 2 relative positions are provided with the ring-type triangle step 4 of evagination, and the arranged outside of triangle step 4 has the ring-type receiving groove 5 of indent.
The material of nonmetal seal ring 2 is teflon, polyimide, nylon, PVC-U, gathers trifluoro-ethylene or fluoroplastic.
In the metal support, be designed with the triangle seal groove, guarantee the nonmetal back distortion of tamping, leakage way is blocked; At metal support bottom design exhaust port, gas is not deposited in the bottom when guaranteeing nonmetal tamping; With keeping certain hour in the high pressure air, venting within a certain period of time then checks that non-metal part tamps quality to the spool that assembles in special tooling; On valve seat 6, be designed with receiving groove 5, guarantee that nonmetallic distortion is interference-free; On valve seat 6, be designed with the step of specified altitude, restriction spool amount of deformation, the protection non-metal surfaces improves working life.This spy has developed the compound split type sealing pair structure that satisfies high pressure sealing, adopts metallic matrix to inlay the compound split structural type of nonmetallic material, utilizes retaining ring that teflon is grasped fluoroplastic seal ring securely.
The temperature of the mounting type of retaining ring 3, material selection, physical dimension, rolling, the parameter determining such as size of power the firm degree of fluorine seal ring; Because of fluorine seal ring linear expansion coeffcient is big, for the high-pressure medium that guarantees sealing does not leak from the metallic matrix of installing, adopt specific position to arrange the method for seal groove, leakage way is blocked; Gas is not deposited in the bottom when taking specific position to stay the exhaust port mode to guarantee to press-fit the fluorine seal ring; The spool that assembles adopts the firm degree of specific process inspection fluorine seal ring; Because of teflon has flowability, after fitting, can leave impression on the seal ring surface with valve seat,, spool do not influence seal spool after repeatedly moving for guaranteeing this impression, on valve seat construction, adopt special receiving groove, make distortion spool face good seal.
Claims (5)
1. a compound split type high pressure sealing is secondary, comprises valve seat and mangetic core assembly, and it is characterized in that: said mangetic core assembly comprises spool matrix, nonmetal seal ring and metal retaining ring; Said spool matrix is provided with the annular seal groove, and said nonmetal seal ring and metal retaining ring are arranged in the annular seal groove; It is inboard that said metal retaining ring is arranged on nonmetal seal ring; The inner side surface of said metal retaining ring is provided with chamfering near an end of valve seat; The corresponding position of the outer side surface of said metal retaining ring and chamfering is provided with annular boss; The external diameter of said annular boss is slightly larger than the internal diameter of nonmetal seal ring; The degree of depth of said metal retaining ring is greater than the degree of depth of nonmetal seal ring; The degree of depth of said annular boss is less than the degree of depth of nonmetal seal ring; The inwall of said annular seal groove is pushed down the chamfering of metal retaining ring through the mode of rolling; The position that said valve seat is relative with nonmetal seal ring is provided with the ring-type triangle step of evagination, and the arranged outside of said triangle step has the ring-type receiving groove of indent.
2. compound split type high pressure sealing according to claim 1 is secondary, it is characterized in that: the outer wall bottom of said annular seal groove 8 is provided with a plurality of exhaust ports.
3. compound split type high pressure sealing according to claim 1 and 2 is secondary, and it is characterized in that: the material of said nonmetal seal ring is teflon, polyimide, nylon, PVC-U, gathers trifluoro-ethylene or fluoroplastic.
4. a compound split type high pressure sealing is secondary, comprises valve seat and mangetic core assembly, and it is characterized in that: said mangetic core assembly comprises spool matrix, nonmetal seal ring and metal retaining ring; Said spool matrix outer side surface is provided with near first boss of valve seat with away from second boss of valve seat; The external diameter of said first boss is less than the external diameter of second boss; Said second boss is provided with chamfering away from an end of valve seat, and said metal retaining ring is arranged on the outer side surface of first boss and second boss and encases second boss from the second boss bi-side; Said metal retaining ring, first boss and spool matrix constitute the annular seal groove; Said nonmetal seal ring is arranged in the annular seal groove; The inner side surface of said metal retaining ring is provided with annular boss near the position of valve seat; The internal diameter of said annular boss is slightly larger than the external diameter of nonmetal seal ring; The position that said valve seat is relative with nonmetal seal ring is provided with the ring-type triangle step of evagination, and the arranged outside of said triangle step has the ring-type receiving groove of indent.
5. compound split type high pressure sealing according to claim 4 is secondary, and it is characterized in that: the material of said nonmetal seal ring is teflon, polyimide, nylon, PVC-U, gathers trifluoro-ethylene or fluoroplastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104565905A CN102518819A (en) | 2011-12-22 | 2011-12-22 | Composite split type high-pressure sealing pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104565905A CN102518819A (en) | 2011-12-22 | 2011-12-22 | Composite split type high-pressure sealing pair |
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| CN102518819A true CN102518819A (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104565905A Pending CN102518819A (en) | 2011-12-22 | 2011-12-22 | Composite split type high-pressure sealing pair |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481028A (en) * | 2013-09-04 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Processing method of valve seat sealing structure of ball valve |
| CN103994243A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel sealing structure of control valve |
| CN105673927A (en) * | 2014-11-21 | 2016-06-15 | 上海航天设备制造总厂 | Spigot sealing device for valve |
| CN107387825A (en) * | 2017-07-31 | 2017-11-24 | 陈炯亮 | A kind of pressure-reducing valve |
| CN109611374A (en) * | 2019-01-14 | 2019-04-12 | 北京星际荣耀空间科技有限公司 | A kind of cryogenic liquid rocket engine turbopump sandwich type labyrinth seal structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH360258A (en) * | 1956-11-12 | 1962-02-15 | Carl Von Platen Baltzar | Valve |
| US4249717A (en) * | 1979-10-17 | 1981-02-10 | Elkhart Brass Manufacturing Co., Inc. | Seal for a liquid valve |
| JPH01203769A (en) * | 1988-02-09 | 1989-08-16 | Toshiba Corp | Compound leaf valve |
| JP2007333194A (en) * | 2006-06-19 | 2007-12-27 | Inax Corp | Solenoid valve |
| CN101344174A (en) * | 2008-08-22 | 2009-01-14 | 无锡金露通用机械有限公司 | Rolling type structure of macrotype butterfly valve seat |
| CN201228807Y (en) * | 2008-03-27 | 2009-04-29 | 上海巨良电磁阀制造有限公司 | Solenoid valve suitable for conveying high-temperature highly pressurised fluid |
-
2011
- 2011-12-22 CN CN2011104565905A patent/CN102518819A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH360258A (en) * | 1956-11-12 | 1962-02-15 | Carl Von Platen Baltzar | Valve |
| US4249717A (en) * | 1979-10-17 | 1981-02-10 | Elkhart Brass Manufacturing Co., Inc. | Seal for a liquid valve |
| JPH01203769A (en) * | 1988-02-09 | 1989-08-16 | Toshiba Corp | Compound leaf valve |
| JP2007333194A (en) * | 2006-06-19 | 2007-12-27 | Inax Corp | Solenoid valve |
| CN201228807Y (en) * | 2008-03-27 | 2009-04-29 | 上海巨良电磁阀制造有限公司 | Solenoid valve suitable for conveying high-temperature highly pressurised fluid |
| CN101344174A (en) * | 2008-08-22 | 2009-01-14 | 无锡金露通用机械有限公司 | Rolling type structure of macrotype butterfly valve seat |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481028A (en) * | 2013-09-04 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Processing method of valve seat sealing structure of ball valve |
| CN103481028B (en) * | 2013-09-04 | 2017-01-25 | 苏州市燃气设备阀门制造有限公司 | Processing method of valve seat sealing structure of ball valve |
| CN103994243A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel sealing structure of control valve |
| CN105673927A (en) * | 2014-11-21 | 2016-06-15 | 上海航天设备制造总厂 | Spigot sealing device for valve |
| CN107387825A (en) * | 2017-07-31 | 2017-11-24 | 陈炯亮 | A kind of pressure-reducing valve |
| CN107387825B (en) * | 2017-07-31 | 2024-04-05 | 陈炯亮 | Pressure reducing valve |
| CN109611374A (en) * | 2019-01-14 | 2019-04-12 | 北京星际荣耀空间科技有限公司 | A kind of cryogenic liquid rocket engine turbopump sandwich type labyrinth seal structure |
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Application publication date: 20120627 |