CN201943995U - Dynamic sealing device suitable for a hydrogen peroxide medium - Google Patents
Dynamic sealing device suitable for a hydrogen peroxide medium Download PDFInfo
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- CN201943995U CN201943995U CN2010202519566U CN201020251956U CN201943995U CN 201943995 U CN201943995 U CN 201943995U CN 2010202519566 U CN2010202519566 U CN 2010202519566U CN 201020251956 U CN201020251956 U CN 201020251956U CN 201943995 U CN201943995 U CN 201943995U
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Abstract
The utility model relates to a dynamic sealing device suitable for a hydrogen peroxide medium, comprising a bellows type seal for sealing a high-temperature flue gas and arranged on a turbine pump axle, a spring type end face seal for sealing the hydrogen peroxide and arranged on the turbine pump axle, an oil gas source assembly arranged on a turbine shell. The dynamic sealing device solves the sealing problem in a hydrogen peroxide pump under the double environment the high-temperature flue gas and the hydrogen peroxide and the realizes the technical requirements for the hydrogen peroxide medium sealing device of the motor turbine pump that: compact structure, small axial space occupancy and good sealing performance.
Description
Technical field
The utility model belongs to engine turbine pump seal technical field, more particularly, belongs to the motive sealing system under the strong oxide isolation of engine turbine pump.The utility model also can be used for oil, chemical industry testing apparatus, and the place of pump rotation axis seal.
Background technique
Following high thrust booster motor has turned to nontoxic propellant agents such as employing liquid oxygen/kerosene, liquid hydrogen.For need the space long-time running, might be manned orbit maneuvering engine, track shift motor, carrier rocket upper stage rocket engine, except that the requirement of nontoxic pollution-free, also require the propellant agent can be in the space long term storage.External flight practice shows, if adopt cryogenic propellants such as liquid oxygen, liquid hydrogen, then spacecraft time in orbit can not surpass one month, and needs aircraft that complicated heat control system is set, and has increased the complexity and the regeneration cost of ground and space housekeeping operation.
Under this background, hydrogen peroxide has obtained concern again as some good characteristics of liquid propellant.Compare with cryogenic propellants such as liquid oxygen, liquid hydrogen, hydrogen peroxide has its special use field, be specially adapted to need long-term (greater than 3 months) space motion, manned, get through the earth's atmosphere repeatedly, reusable near earth orbit aircraft, can reduce aircraft volume and resistance, avoid pollution environment, aircraft and occupant, improve Security, maintainability and operability, reduce the exploitation and the operating cost of aircraft.The hydrogen peroxide Engine Series can be used for the rail control motor of satellite, airship, space operations platform, also can be used as the orbit maneuver/transfer motor of spacecraft, the upper stage rocket engine of carrier rocket.
Forms the chain type decomposition under 140 ℃ of temperature because hydrogen peroxide has, set off an explosion easily, and sealing is to be under the dual environment of high-temperature fuel gas and hydrogen peroxide medium in hydrogen peroxide pump that this has just proposed great challenge to sealing.
The model utility content
The utility model purpose provides a kind of dynamic seal apparatus that is applicable to the hydrogen peroxide medium, and the sealing device realized engine turbine pump hydrogen peroxide medium-tight apparatus structure compactness, occupy that axial space is little, the technical requirements of good seal performance.
Technical solution of the present utility model is:
A kind of dynamic seal apparatus that is applicable to the hydrogen peroxide medium, its special way is: it comprises and is arranged on the bellows-type sealing 1 that is used for sealing high-temperature fuel gas on the turbine pump shaft 14, is arranged on the spring end face seal 2 that is used for sealing hydrogen peroxide on the turbine pump shaft 14, is arranged on the oil-gas-source assembly 4 on the turbine pump housing 15;
Described bellows-type sealing 1 comprises welded metal bellow 11, back ring 10, first rotating ring 8, first stationary seat 91, first stationary ring 9, described first stationary ring 9 is fixed on first stationary seat 91, described back ring 10 is fixed on the turbine pump housing 15, one end of described metal bellows 11 is welded on the back ring 10, and the other end is welded on first stationary seat 91; 8 frictions are connected described first stationary ring 9 with first rotating ring, and described first rotating ring 8 is fixed on the turbine pump shaft 14;
Described spring end face seal 2 comprises second moving ring assembly, second stationary seat 61, second stationary ring 6, spring housing 7, a plurality of little spring 13, described second stationary ring 6 is fixed on second stationary seat 61, described spring housing 7 is fixed on the turbine pump housing 15, one end of described little spring 13 is arranged in the spring eye 17 of spring housing 7, the other end withstands the end face of second stationary seat 61, described second stationary ring 6 is connected with the friction of second moving ring assembly, and the described second rotating seat assembly is fixed on the turbine pump shaft 14;
Described turbine pump housing 15, bellows-type sealing 1, spring end face seal 2, turbine pump shaft 14 surround isolation oil pocket 3, are full of in it and isolate oil, and described oil-gas-source assembly 4 communicates with isolating oil pocket 3, are used for to isolating the oily pressure that setting is provided.
Above-mentioned second moving ring assembly comprise second rotating seat 51, second rotating ring 5 and be arranged on second rotating ring 5 and second rotating seat 51 between the elastic ring 52 that is used to seal; Described second rotating ring 5 is provided with the latch 56 that two centers are oppositely arranged, and described second rotating seat 51 is provided with the draw-in groove 55 that two centers are relative and match with latch; Described second stationary ring 6 is connected with 5 frictions of second rotating ring, and described second rotating ring 5 is fixed on second rotating seat 51, and described second rotating seat 51 is fixed on the turbine pump shaft 14.
Above-mentioned second rotating ring 5 and second stationary ring, 6 contacted rubbing surfaces 53 are provided with annular groove 54, and described annular groove 54 is arranged on the inboard of the rubbing surface 53 of second rotating ring 5.
The above-mentioned spring housing 7 and second stationary seat 61 are circumferentially opened a plurality of return ports 16 that are used to strengthen the flowability of hydrogen peroxide medium respectively.
The quantity of return port 16 is six and circumference uniform distribution on the above-mentioned spring housing 7 and second stationary seat 61.
Above-mentioned bellows-type sealing 1 also comprises damping tape 12, and described damping tape 12 is arranged on the outer side surface circumference of metal bellows and is connected with wheel pump case 15.
Above-mentioned first stationary ring 9 and second stationary ring 6 are graphite stationary ring, and described isolation oil is anti-chemical lubricant oil.
The utility model advantage compared with prior art is:
1, the utility model is used for the engine turbine pump, and sealing hydrogen peroxide medium and high-temperature fuel gas set off an explosion in order to avoid two media is in contact with one another.
2, the hydrogen peroxide medium dynamic seal apparatus of the utility model design, the sealing of employing two-stage series, the intermediate isolating oil pocket adds the seal combination structure of isolating oil, simply " blocking up " or the scheme of " dredging " of conventional seals have been cast aside, combine " blocking up " and " dredging " length separately, sealing is in the good running environment, has reduced the temperature of hydrogen peroxide medium contact environment.
3, second moving ring assembly of the hydrogen peroxide medium dynamic seal apparatus hydrogen peroxide side end face of the utility model design sealing adopts split-type structural, promptly second moving ring assembly comprise second rotating seat, second rotating ring and be arranged on second rotating ring and second rotating seat between the elastic ring that is used to seal; Second rotating ring is provided with the latch that two centers are oppositely arranged, and second rotating seat is provided with two draw-in grooves that the center is relative, and latch is engaged in the draw-in groove, and therefore second moving ring assembly has certain floatability, causes the end face deflection in the time of can preventing engine luggine.The utility model also at sealed friction surface 53 with the interior annular groove that is processed with, overcoming the end-face friction face stress deformation that seal pressure brings, friction deflection, friction aggravation, leakage and even seal failure when avoiding causing seal operation.
4, owing to the characteristic of hydrogen peroxide, motor sealing in the past never runs into.So the hydrogen peroxide medium dynamic seal apparatus of the utility model design, every and hydrogen peroxide and the part product that might contact with hydrogen peroxide and hydrogen peroxide medium all have good compatibility.
5, the hydrogen peroxide medium dynamic seal apparatus of the utility model design, the spring housing of spring end face seal and second stationary seat have six mutual unobstructed return ports, to strengthen hydrogen peroxide medium flowing at Seal cage, play the effect of taking away heat, reduced the possibility that the hydrogen peroxide medium heats up.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is second rotating ring of the utility model spring end face seal and the structural representation of second rotating seat;
Fig. 3 is the structural representation of second rotating ring among Fig. 2;
Fig. 4 is the structural representation of second rotating seat among Fig. 2;
Fig. 5 is the structural representation of second stationary seat of the utility model spring end face seal;
Fig. 6 is the structural representation of the spring housing of the utility model spring end face seal;
Wherein: the sealing of 1-bellows-type, the end face seal of 2-spring, 3-isolates oil pocket, 4-oil-gas-source assembly, 5-second rotating ring, 51-second rotating seat, 52-elastic ring, 53-rubbing surface, 54-annular groove, the 55-draw-in groove, 56-latch, 6-second stationary ring, 61-second stationary seat, 7-spring housing, 8-first rotating ring, 9-first stationary ring, 91-first stationary seat encircles behind the 10-, the 11-metal bellows, 12-damping tape, 13-little spring, 14-turbine pump shaft, 15-turbine pump housing, 16-return port, 17-spring eye.
Embodiment
As shown in Figure 1, the hydrogen peroxide medium is through before entering spring end face seal 2 behind the cooling bearing, by second stationary seat 61, the circumferential oblique return port of offering on spring eye 17 and the spring housing 7 16, it is logical to carry out local flow earlier, before being back to pump again, make the end face seal part can freely not cause being detained or taking place choking phenomenon because of the medium circulation.Spring end face seal 2 is an in-flow, the hydrogen peroxide MEDIA FLOW will overcome the centrifugal force that second rotating ring 5 produces between friction pair, isolate oil pocket 3 pressure or adjust seal pressure as long as suitably increase, just can guarantee that the oil film wedge between spring end face seal 2 friction pairs is to isolate oil.It is harmless sneaking into hydrogen peroxide as the oily outwards outflow of the isolation of the denier after the oil film wedge work.Bellows-type sealing 1 is used for sealing the high-temperature fuel gas in left side, and metal bellows 11 plays the effect of auxiliary static seal, and damping tape 12 has strengthened metal bellows elastic returning in use, has increased the life-span.Isolate oil first rotating ring 8 is soaked wherein, plays the effect of cooling first rotating ring 8 and end face seal friction surface, but the also pressure of balance combustion gas of the pressure of isolating oil pocket 3 alleviates sealing load.Adopt weld metal 1 bellows pattern, exempted the puzzlement of the hard to bear high temperature of auxiliary seal employing O type circle in the past, the welded bellows of bellows-type sealing can provide corresponding elastic force, satisfy the usage requirement of spring pressure, and heat resistance is good.
As Fig. 2, Fig. 3 and shown in Figure 4, second moving ring assembly of spring end face seal 2 adopts second rotating ring 5 and second rotating seat 51 and elastic ring 52 combination forms, second rotating seat 51 is processed into circumferential two latches 56, insert during assembling in the draw-in groove 55 of second rotating ring 5, the middle elastic ring 52 that adopts seals.Therefore, spring end face seal 2 has compact structure, simple and reliable characteristics.As shown in Figure 3, with the interior annular groove 54 that is processed with, to overcome the end-face friction face stress deformation that seal pressure brings, the friction deflection rubs and aggravates second rotating ring 5 when avoiding causing seal operation at its rubbing surface, leak, so that seal failure.Second rotating ring 5 adopts split-type structural, has certain floatability, causes the end face deflection when preventing engine luggine.The pattern that is threaded is adopted in cooperating of spring housing 7 and turbine pump housing 15, the direction of screw thread during with engine operation the sense of rotation of axle consistent, saved the space like this, simple and reliable.
Second stationary seat 61 is circumferentially processed six return ports 16 as shown in Figure 5 and Figure 6, links to each other with six return ports 16 of spring eye 17 and spring housing 7, strengthens the flowability of hydrogen peroxide medium, but avoids medium to gather too many heat and coolant seal end face.
Anti-chemical lubricant oil is good to media compatibility, does not fire, and high temperature does not corrode stainless steel for 500 ℃.
The utility model principle: seal arrangement adopts bellows-type sealing+spring end face seal combination, and oily seal combination pattern is isolated in filling between two sealings.The left side is that bellows-type sealing, right side are that spring sealing, two seals have rotating ring separately respectively near the hydrogen peroxide side near the combustion gas side.The right side is sealed into in-flow near the spring of hydrogen peroxide side, and MEDIA FLOW will overcome the centrifugal force that rotating ring produces between friction pair, isolates oil pocket pressure or adjusts seal pressure as long as suitably increase, and just can guarantee that the oil film wedge between spring sealed end friction pair is an oil.
Claims (7)
1. dynamic seal apparatus that is applicable to the hydrogen peroxide medium is characterized in that: it comprises and is arranged on the bellows-type sealing (1) that is used for sealing high-temperature fuel gas on the turbine pump shaft (14), is arranged on the spring end face seal (2) that is used for sealing hydrogen peroxide on the turbine pump shaft (14), is arranged on the oil-gas-source assembly (4) on the turbine pump housing (15);
Described bellows-type sealing (1) comprises welded metal bellow (11), back ring (10), first rotating ring (8), first stationary seat (91), first stationary ring (9), described first stationary ring (9) is fixed on first stationary seat (91), described back ring (10) is fixed on the turbine pump housing (15), one end of described metal bellows (11) is welded on the back ring (10), and the other end is welded on first stationary seat (91); Friction is connected described first stationary ring (9) with first rotating ring (8), and described first rotating ring (8) is fixed on the turbine pump shaft (14);
Described spring end face seal (2) comprises second moving ring assembly, second stationary seat (61), second stationary ring (6), spring housing (7), a plurality of little springs (13), described second stationary ring (6) is fixed on second stationary seat (61), described spring housing (7) is fixed on the turbine pump housing (15), one end of described little spring (13) is arranged in the spring eye (17) of spring housing (7), the other end withstands the end face of second stationary seat (61), described second stationary ring (6) is connected with the friction of second moving ring assembly, and the described second rotating seat assembly is fixed on the turbine pump shaft (14);
Described turbine pump housing (15), bellows-type sealing (1), spring end face seal (2), turbine pump shaft (14) surround and isolate oil pocket (3), be full of in it and isolate oil, described oil-gas-source assembly (4) communicates with isolating oil pocket (3), is used for to isolating the oily pressure that setting is provided.
2. the dynamic seal apparatus that is applicable to the hydrogen peroxide medium according to claim 1 is characterized in that: described second moving ring assembly comprise second rotating seat (51), second rotating ring (5) and be arranged on second rotating ring (5) and second rotating seat (51) between the elastic ring (52) that is used to seal; Described second rotating ring (5) is provided with the latch (56) that two centers are oppositely arranged, and described second rotating seat (51) is provided with the draw-in groove (55) that two centers are relative and match with latch; Described second stationary ring (6) is connected with second rotating ring (5) friction, and described second rotating ring (5) is fixed on second rotating seat (51), and described second rotating seat (51) is fixed on the turbine pump shaft (14).
3. the dynamic seal apparatus that is applicable to the hydrogen peroxide medium according to claim 1 and 2, it is characterized in that: described second rotating ring (5) is provided with annular groove (54) with the contacted rubbing surface of second stationary ring (6) (53), and described annular groove (54) is arranged on the inboard of the rubbing surface (53) of second rotating ring (5).
4. the dynamic seal apparatus that is applicable to the hydrogen peroxide medium according to claim 3 is characterized in that: described spring housing (7) and second stationary seat (61) are circumferentially opened a plurality of return ports (16) that are used to strengthen the flowability of hydrogen peroxide medium respectively.
5. the dynamic seal apparatus that is applicable to the hydrogen peroxide medium according to claim 4 is characterized in that: the quantity that described spring housing (7) and second stationary seat (61) are gone up return port (16) is six and circumference uniform distribution.
6. the dynamic seal apparatus that is applicable to the hydrogen peroxide medium according to claim 3, it is characterized in that: described bellows-type sealing (1) also comprises damping tape (12), and described damping tape (12) is arranged on the outer side surface circumference of metal bellows and is connected with wheel pump case (15).
7. the dynamic seal apparatus that is applicable to the hydrogen peroxide medium according to claim 6 is characterized in that: described first stationary ring (9) and second stationary ring (6) are graphite stationary ring, and described isolation oil is anti-chemical lubricant oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202519566U CN201943995U (en) | 2010-07-08 | 2010-07-08 | Dynamic sealing device suitable for a hydrogen peroxide medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202519566U CN201943995U (en) | 2010-07-08 | 2010-07-08 | Dynamic sealing device suitable for a hydrogen peroxide medium |
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| Publication Number | Publication Date |
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| CN201943995U true CN201943995U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202519566U Expired - Fee Related CN201943995U (en) | 2010-07-08 | 2010-07-08 | Dynamic sealing device suitable for a hydrogen peroxide medium |
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| CN (1) | CN201943995U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235052A (en) * | 2014-07-23 | 2014-12-24 | 中国航天科技集团公司第六研究院第十一研究所 | Novel pressure stabilization device for double-end surface sealing of turbine pump |
| CN106439030A (en) * | 2016-11-10 | 2017-02-22 | 丹东克隆集团有限责任公司 | Damping type corrugated pipe compensation moving ring component of mechanical sealing device and application |
| CN106932157A (en) * | 2017-03-23 | 2017-07-07 | 北京航天动力研究所 | Pressure measuring device is compared in a kind of mechanical end face seal for high velocity liquid oxygen turbopump |
| CN107588038A (en) * | 2017-10-11 | 2018-01-16 | 西安航天动力研究所 | A kind of turbine pump mechanical seal structure |
| CN108506496A (en) * | 2018-04-03 | 2018-09-07 | 北京化工大学 | A kind of isolated form dynamic pressure sealing device and mechanical equipment |
| CN109058467A (en) * | 2018-10-16 | 2018-12-21 | 宁波天工机械密封有限公司 | A kind of corrosion-resisting mechanical seal and installation method |
| CN109253260A (en) * | 2018-11-30 | 2019-01-22 | 哈尔滨广瀚动力技术发展有限公司 | A kind of oil sealing arrangement of the gas turbine with flag-shaped slot rotating ring |
| CN109737094A (en) * | 2018-11-13 | 2019-05-10 | 陕西蓝箭航天技术有限公司 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
| CN110621924A (en) * | 2017-05-12 | 2019-12-27 | 伊格尔工业股份有限公司 | Mechanical seal |
| CN113124163A (en) * | 2021-04-29 | 2021-07-16 | 西安航天动力研究所 | Symmetrical low-temperature-resistant combined sealing device |
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- 2010-07-08 CN CN2010202519566U patent/CN201943995U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235052B (en) * | 2014-07-23 | 2016-06-29 | 中国航天科技集团公司第六研究院第十一研究所 | A kind of turbine pump double seals stable-pressure device |
| CN104235052A (en) * | 2014-07-23 | 2014-12-24 | 中国航天科技集团公司第六研究院第十一研究所 | Novel pressure stabilization device for double-end surface sealing of turbine pump |
| CN106439030A (en) * | 2016-11-10 | 2017-02-22 | 丹东克隆集团有限责任公司 | Damping type corrugated pipe compensation moving ring component of mechanical sealing device and application |
| CN106932157A (en) * | 2017-03-23 | 2017-07-07 | 北京航天动力研究所 | Pressure measuring device is compared in a kind of mechanical end face seal for high velocity liquid oxygen turbopump |
| CN106932157B (en) * | 2017-03-23 | 2023-08-11 | 北京航天动力研究所 | Mechanical end face seal specific pressure measuring device for high-speed liquid oxygen turbine pump |
| CN110621924A (en) * | 2017-05-12 | 2019-12-27 | 伊格尔工业股份有限公司 | Mechanical seal |
| CN110621924B (en) * | 2017-05-12 | 2022-07-15 | 伊格尔工业股份有限公司 | Mechanical seal |
| US11371616B2 (en) | 2017-05-12 | 2022-06-28 | Eagle Industry Co., Ltd. | Mechanical seal |
| CN107588038A (en) * | 2017-10-11 | 2018-01-16 | 西安航天动力研究所 | A kind of turbine pump mechanical seal structure |
| CN107588038B (en) * | 2017-10-11 | 2023-06-23 | 西安航天动力研究所 | Mechanical sealing structure of turbine pump |
| CN108506496B (en) * | 2018-04-03 | 2023-06-13 | 北京化工大学 | Isolation type dynamic pressure sealing device and mechanical equipment |
| CN108506496A (en) * | 2018-04-03 | 2018-09-07 | 北京化工大学 | A kind of isolated form dynamic pressure sealing device and mechanical equipment |
| CN109058467A (en) * | 2018-10-16 | 2018-12-21 | 宁波天工机械密封有限公司 | A kind of corrosion-resisting mechanical seal and installation method |
| CN109058467B (en) * | 2018-10-16 | 2023-10-31 | 宁波天工机械密封有限公司 | Corrosion-resistant mechanical seal and installation method |
| CN109737094A (en) * | 2018-11-13 | 2019-05-10 | 陕西蓝箭航天技术有限公司 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
| CN109737094B (en) * | 2018-11-13 | 2020-05-12 | 陕西蓝箭航天技术有限公司 | Dynamic sealing device for turbine pump and turbine pump set |
| CN109253260A (en) * | 2018-11-30 | 2019-01-22 | 哈尔滨广瀚动力技术发展有限公司 | A kind of oil sealing arrangement of the gas turbine with flag-shaped slot rotating ring |
| CN113124163A (en) * | 2021-04-29 | 2021-07-16 | 西安航天动力研究所 | Symmetrical low-temperature-resistant combined sealing device |
| CN113124163B (en) * | 2021-04-29 | 2023-10-24 | 西安航天动力研究所 | Symmetrical low-temperature-resistant combined sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20180708 |