CN204878738U - Structure of obturaging - Google Patents

Structure of obturaging Download PDF

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Publication number
CN204878738U
CN204878738U CN201520423932.7U CN201520423932U CN204878738U CN 204878738 U CN204878738 U CN 204878738U CN 201520423932 U CN201520423932 U CN 201520423932U CN 204878738 U CN204878738 U CN 204878738U
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China
Prior art keywords
runway
obturaging
air guide
guide sleeve
groove
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Application number
CN201520423932.7U
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Chinese (zh)
Inventor
倪慧妍
王小珏
杨春华
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AECC South Industry Co Ltd
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China National South Aviation Industry Co Ltd
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Priority to CN201520423932.7U priority Critical patent/CN204878738U/en
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Abstract

The utility model discloses a structure of obturaging, including the rotation axis, the cover is equipped with the runway rotating assembly that obturages on the rotation axis, and the runway rotating assembly that obturages includes that the suit is annular kuppe, is the runway of obturaging of hollow tube -shape on the rotation axis, the kuppe with obturage runway fixed connection, the suit has and is used for the graphite subassembly that seals up on the runway of obturaging, the tip of kuppe is protruding be equipped with stretch into the runway inner tube of obturaging lead an oil section of thick bamboo, lead an oil section of thick bamboo and be hollow tube -shape and suit in rotation axis, lead clearance between the inner tube wall of an oil section of thick bamboo and the runway of obturaging and constitute and be used for carrying out the oil groove of leading that leads to the lubricating oil, processing has and leads the oil outlet that the oil groove feeds through on the runway of obturaging, processing has the confession lubricating oil to get into the first recess in the inner tube of leading an oil section of thick bamboo on the interior anchor ring of kuppe. The utility model discloses a structure of obturaging can carry out abundant cooling to the urceolus wall of the runway of obturaging, and the effectual runway rotating assembly's that prevents to obturage working face temperature is on the high side, is favorable to obturage runway rotating assembly's life of extension.

Description

Seal structure
Technical field
The utility model relates to aeroengine field, especially, relates to a kind of seal structure.
Background technique
In the paddle type motor of whirlpool, utilizing air pressure difference to obturage to lubricating oil is a kind of comparatively simple and common mode of obturaging.The seal structure of existing motor is as shown in accompanying drawing Fig. 1, and comprise graphite device 5 and runway revolving part 6 of obturaging, runway revolving part 6 of obturaging is installed on turbine shaft, and graphite device 5 is installed in be obturaged on runway revolving part 6.Runway revolving part 6 of obturaging comprises runway 61 and the second air guide sleeve 62, second air guide sleeve 62 and runway 61 Spielpassung, as shown in accompanying drawing Fig. 2, lubricating oil enters the second filler opening 64, and under the guide functions of the second air guide sleeve 62, flow to the inner ring of runway 61, carry out lubricating oil cooling to the working surface 65 of runway 61, lubricating oil flows out through the second oil outlet 66 afterwards.
Under runway revolving part 6 of obturaging is in high temperature and high speed environment in engine working process, under the influence of centrifugal force, after lubricating oil enters from the second filler opening 64, be easy to directly throw away from the second oil outlet 66, thus cause the working surface 65 of runway 61 to be cooled fully, there is blue phenomenon in the runway revolving part 6 that makes to obturage, impact is obturaged life-span of runway revolving part 6.
Model utility content
The utility model provides a kind of seal structure, to solve in existing seal structure the phenomenon that turning blue easily appears in runway revolving part of obturaging, and the technical problem that working life of runway revolving part of obturaging is short.
The technical solution adopted in the utility model is as follows:
A kind of seal structure, comprise running shaft, running shaft is set with runway swivel assembly of obturaging, runway swivel assembly of obturaging comprises the air guide sleeve, the runway of obturaging in hollow tubular that to be set on running shaft in the form of a ring, air guide sleeve is fixedly connected with runway of obturaging, and runway of obturaging is set with the graphite components for sealing; The end of air guide sleeve is convexly equipped with the oil conducting tube stretching into runway inner core of obturaging, oil conducting tube is hollow tubular and is set on running shaft, gap between the inner tube wall of oil conducting tube and runway of obturaging is configured for the oil guide slot led to lubricating oil, runway of obturaging is processed with the oil outlet be communicated with oil guide slot; The inner ring surface of air guide sleeve is processed with and enters the first groove in the inner core of oil conducting tube for lubricating oil.
Further, the quantity of the first groove is multiple, and multiple first groove is arranged along the inner ring surface interval of air guide sleeve, and the two ends of each first groove are communicated with the two ends of air guide sleeve respectively.
Further, multiple first groove is evenly arranged along the contour of the inner ring surface of air guide sleeve, and each first groove extends along the axial direction of air guide sleeve.
Further, the end face of end relative with oil conducting tube on air guide sleeve is processed with multiple second groove, multiple second groove is arranged along the end surfaces of the end of air guide sleeve, and the two ends of the width direction of each second groove are communicated with outer ring surface with the inner ring surface of air guide sleeve respectively.
Further, multiple second groove respectively with multiple first groove one_to_one corresponding, and the length of the second groove is equal with the width of the first groove.
Further, away from the stepped slot end face of the end of oil conducting tube being processed with annular on the outer ring surface of air guide sleeve, stepped slot is communicated with the end face of the end away from oil conducting tube of air guide sleeve.
Further, the end face of first end of runway obturaged is welded and fixed by the welding manner of electron beam welding and the end face being provided with the end of oil conducting tube of air guide sleeve.
Further, the quantity of oil outlet is multiple, and multiple oil outlet is arranged along the contour interval of the outer tube wall of runway of obturaging, and each oil outlet is vertically obturage the straight hole of outer tube wall of runway, and its two ends are communicated with inner tube wall with the outer tube wall of runway of obturaging respectively.
Further, obturage runway outer tube wall on be coated with one deck layers of chrome.
Further, the inner tube wall of second end relative with its first end of runway of obturaging be provided with give prominence to towards its center and bulge loop in the form of a ring, bulge loop is set on running shaft.
The utility model has following beneficial effect:
Seal structure of the present utility model, due to the oil conducting tube for being provided with between the first groove of oil-feed and oil outlet for water conservancy diversion, first the lubricating oil entered by the first groove will enter in oil conducting tube, and then enter under the effect of oil conducting tube and obturage in runway, and continue to enter under the effect of oil conducting tube between the outer tube wall of oil conducting tube and the inner tube wall of runway of obturaging, finally flowed out by oil outlet under the influence of centrifugal force, so compare existing seal structure, in seal structure of the present utility model, even if under being in the environment of high temperature and high speed, the lubricating oil entered by the first groove also can not directly flow out from oil outlet, thus the outer tube wall of runway of obturaging is cooled fully, effectively prevent from obturaging the working surface temperature drift of runway swivel assembly, be conducive to extending the working life of runway swivel assembly of obturaging,
In addition, because air guide sleeve is fixedly connected with runway of obturaging, the carrying of runway swivel assembly of can conveniently obturaging, storage and keeping.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the sectional structure schematic diagram of the seal structure of prior art;
Fig. 2 is the sectional structure schematic diagram of the runway revolving part of obturaging of prior art in Fig. 1;
Fig. 3 is the sectional structure schematic diagram of the seal structure of the utility model preferred embodiment; And
Fig. 4 is the sectional structure schematic diagram of the runway swivel assembly of obturaging in Fig. 3.
Marginal data
1, running shaft; 2, air guide sleeve; 201, oil conducting tube; 203, oil guide slot; 204, the first groove; 205, the second groove; 206, stepped slot; 3, to obturage runway; 301, oil outlet; 302, bulge loop; 4, graphite components; 5, graphite device; 6, to obturage runway revolving part; 61, runway; 62, the second air guide sleeve; 64, the second filler opening; 65, working surface; 66, the second oil outlet.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 3 and Figure 4, preferred embodiment of the present utility model provides a kind of seal structure, comprise running shaft 1, running shaft 1 is set with runway swivel assembly of obturaging, runway swivel assembly of obturaging comprises the air guide sleeve 2, the runway 3 of obturaging in hollow tubular that to be set on running shaft 1 in the form of a ring, air guide sleeve 2 is fixedly connected with runway 3 of obturaging, and runway 3 of obturaging is set with the graphite components 4 for sealing; The end of air guide sleeve 2 is convexly equipped with the oil conducting tube 201 stretching into runway 3 inner core of obturaging, oil conducting tube 201 is hollow tubular and is set in running shaft 1, gap between the inner tube wall of oil conducting tube 201 and runway 3 of obturaging is configured for the oil guide slot 203 led to lubricating oil, runway 3 of obturaging is processed with the oil outlet 301 be communicated with oil guide slot 203; The inner ring surface of air guide sleeve 2 is processed with and enters the first groove 204 in the inner core of oil conducting tube 201 for lubricating oil.In seal structure of the present utility model, first lubricating oil enters in the gap between the inner tube wall of oil conducting tube 201 and the periphery wall of running shaft 1 by the first groove 204, and enter in the gap between the inner tube wall of runway 3 of obturaging and the periphery wall of running shaft 1 under the water conservancy diversion of oil conducting tube 201, and continue to enter under the water conservancy diversion of oil conducting tube 201 in the gap between the outer tube wall of oil conducting tube 201 and the inner tube wall of runway 3 of obturaging, to cool the outer tube wall of runway 3 of obturaging, and outwards flowed out by oil outlet 301 under the influence of centrifugal force.Seal structure of the present utility model, due to the oil conducting tube 201 for being provided with between the first groove 204 of oil-feed and oil outlet 301 for water conservancy diversion, first the lubricating oil entered by the first groove 204 will enter in oil conducting tube 201, and then enter under the effect of oil conducting tube 201 and obturage in runway 3, and continue to enter between the outer tube wall of oil conducting tube 201 and the inner tube wall of runway 3 of obturaging under the effect of oil conducting tube 201, finally flowed out by oil outlet 301 under the influence of centrifugal force, so compare existing seal structure, in seal structure of the present utility model, even if under being in the environment of high temperature and high speed, the lubricating oil entered by the first groove 204 also can not directly flow out from oil outlet 301, thus the outer tube wall of runway 3 of obturaging is cooled fully, effectively prevent from obturaging the working surface temperature drift of runway swivel assembly, be conducive to extending the working life of runway swivel assembly of obturaging, in addition, because air guide sleeve 2 is fixedly connected with runway 3 of obturaging, the carrying of runway swivel assembly of can conveniently obturaging, storage and keeping.
Particularly, in the utility model, as shown in Figure 4, the quantity of the first groove 204 is multiple, multiple first groove 204 is arranged along the inner ring surface interval of air guide sleeve 2, and the two ends of each first groove 204 are communicated with the two ends of air guide sleeve 2 respectively, flows in oil conducting tube 201 to make lubricating oil.In the utility model specific embodiment, the quantity of the first groove 204 is 14, and 14 the first grooves 204 are evenly arranged along the contour of the inner ring surface of air guide sleeve 2, and each first groove 204 extends along the axial direction of air guide sleeve 2.
Alternatively, in the utility model, as shown in Figure 4, the end face of end relative with oil conducting tube 201 on air guide sleeve 2 is processed with multiple second groove 205, multiple second groove 205 is arranged along the end surfaces of the end of air guide sleeve 2, and the two ends of the width direction of each second groove 205 are communicated with outer ring surface with the inner ring surface of air guide sleeve 2 respectively.By processing multiple second groove 205 on the end face of the end relative with oil conducting tube 201 of air guide sleeve 2, make, between adjacent two the second grooves 205, there is raised line, thus convenient to be connected with other outside component, the runway swivel assembly that makes to obturage easily assembles and dismantles.
In the utility model specific embodiment, multiple second groove 205 respectively with multiple first groove 204 one_to_one corresponding, and the length of the second groove 205 is equal with the width of the first groove 204.
Alternatively, in the utility model, as shown in Figure 4, away from the stepped slot 206 end face of the end of oil conducting tube 201 being processed with annular on the outer ring surface of air guide sleeve 2, stepped slot 206 is communicated with the end face of the end away from oil conducting tube 201 of air guide sleeve 2.By processing step groove 206 on the outer ring surface of air guide sleeve 2, facilitate air guide sleeve 2 and other component be installed on running shaft 1 to be connected, the runway swivel assembly that makes further to obturage easily assembles and dismantles.
In the utility model, the end face of first end of runway 3 obturaged is welded and fixed by the welding manner of electron beam welding and the end face being provided with the end of oil conducting tube 201 of air guide sleeve 2, thus the runway 3 that makes to obturage forms a single piece with air guide sleeve 2, the carrying of runway swivel assembly of can conveniently obturaging, storage and keeping.
As shown in Figure 4, in the utility model, the quantity of oil outlet 301 is multiple, multiple oil outlet 301 is arranged along the contour interval of the outer tube wall of runway 3 of obturaging, and each oil outlet 301 is vertically obturage the straight hole of outer tube wall of runway 3, the two ends of oil outlet 301 are communicated with inner tube wall with the outer tube wall of runway 3 of obturaging respectively.In seal structure of the present utility model, oil outlet 301 is vertically obturage the straight hole of outer tube wall of runway 3, and compare the inclined hole in existing seal structure, straight hole is easily processed, and can save machining period, improves work efficiency.
Alternatively, in the utility model, the outer tube wall of runway 3 of obturaging is coated with one deck layers of chrome, the outer surface hardness of runway 3 of obturaging can be improved, increase wear resistance during work.
In the utility model, as shown in Figure 4, the inner tube wall of second end relative with its first end of runway 3 of obturaging be provided with give prominence to towards its center and bulge loop 302 in the form of a ring, bulge loop 302 is set on running shaft 1.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (10)

1. a seal structure, is characterized in that,
Comprise running shaft (1), (1) is set with runway swivel assembly of obturaging to described running shaft, described runway swivel assembly of obturaging comprises the air guide sleeve (2), the runway of obturaging (3) in hollow tubular that to be set on described running shaft (1) in the form of a ring, described air guide sleeve (2) is fixedly connected with described runway of obturaging (3), described in obturage the graphite components (4) runway (3) is set with for sealing;
The end of described air guide sleeve (2) be convexly equipped with stretch into described in obturage the oil conducting tube (201) of runway (3) inner core, described oil conducting tube (201) is in hollow tubular and be set on described running shaft (1), gap between the inner tube wall of described oil conducting tube (201) and described runway of obturaging (3) is configured for the oil guide slot (203) led to lubricating oil, described in obturage on runway (3) and be processed with the oil outlet (301) be communicated with described oil guide slot (203);
The inner ring surface of described air guide sleeve (2) is processed with and enters the first groove (204) in the inner core of described oil conducting tube (201) for lubricating oil.
2. seal structure according to claim 1, is characterized in that,
The quantity of described first groove (204) is multiple, multiple described first groove (204) is arranged along the inner ring surface interval of described air guide sleeve (2), and the two ends of each described first groove (204) are communicated with the two ends of described air guide sleeve (2) respectively.
3. seal structure according to claim 2, is characterized in that,
Multiple described first groove (204) is evenly arranged along the contour of the inner ring surface of described air guide sleeve (2), and each described first groove (204) extends along the axial direction of described air guide sleeve (2).
4. seal structure according to claim 3, is characterized in that,
The end face of the upper end relative with described oil conducting tube (201) of described air guide sleeve (2) is processed with multiple second groove (205), described multiple second groove (205) is arranged along the end surfaces of the end of described air guide sleeve (2), and the two ends of the width direction of each described second groove (205) are communicated with outer ring surface with the inner ring surface of described air guide sleeve (2) respectively.
5. seal structure according to claim 4, is characterized in that,
Described multiple second groove (205) respectively with multiple described first groove (204) one_to_one corresponding, and the length of described second groove (205) is equal with the width of described first groove (204).
6. seal structure according to claim 5, is characterized in that,
Away from the stepped slot (206) end face of the end of described oil conducting tube (201) being processed with annular on the outer ring surface of described air guide sleeve (2), described stepped slot (206) is communicated with the end face of the end away from described oil conducting tube (201) of described air guide sleeve (2).
7. seal structure according to claim 1, is characterized in that,
The end face of the first end of described runway of obturaging (3) is welded and fixed by the welding manner of electron beam welding and the end face being provided with the end of described oil conducting tube (201) of described air guide sleeve (2).
8. seal structure according to claim 7, is characterized in that,
The quantity of described oil outlet (301) is multiple, multiple described oil outlet (301) along described in the obturage contour interval of outer tube wall of runway (3) arrange, and each described oil outlet (301) is the straight hole of the outer tube wall of runway (3) of obturaging described in vertical, its two ends are communicated with inner tube wall with the outer tube wall of described runway of obturaging (3) respectively.
9. seal structure according to claim 7, is characterized in that,
The outer tube wall of described runway of obturaging (3) is coated with one deck layers of chrome.
10. seal structure according to claim 7, is characterized in that,
The inner tube wall of second end relative with its first end of described runway of obturaging (3) be provided with give prominence to towards its center and bulge loop (302) in the form of a ring, described bulge loop (302) is set on described running shaft (1).
CN201520423932.7U 2015-06-18 2015-06-18 Structure of obturaging Active CN204878738U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972216A (en) * 2016-07-22 2016-09-28 中国航空动力机械研究所 Circumferential graphite sealing device
CN107269396A (en) * 2017-08-17 2017-10-20 中国科学院工程热物理研究所 A kind of achievable bearing seal structure that chamber and bearing exocoel are pressed altogether
CN107327571A (en) * 2017-06-15 2017-11-07 中国科学院工程热物理研究所 Floating-ring seal component with skewed slot
CN111927633A (en) * 2020-08-20 2020-11-13 中国科学院工程热物理研究所 Graphite sealing structure with anti-fishbone dynamic pressure groove
CN111927635A (en) * 2020-08-20 2020-11-13 中国科学院工程热物理研究所 Graphite sealing structure with twill dynamic pressure groove

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972216A (en) * 2016-07-22 2016-09-28 中国航空动力机械研究所 Circumferential graphite sealing device
CN107327571A (en) * 2017-06-15 2017-11-07 中国科学院工程热物理研究所 Floating-ring seal component with skewed slot
CN107327571B (en) * 2017-06-15 2018-09-11 中国科学院工程热物理研究所 Floating-ring seal component with skewed slot
CN107269396A (en) * 2017-08-17 2017-10-20 中国科学院工程热物理研究所 A kind of achievable bearing seal structure that chamber and bearing exocoel are pressed altogether
CN107269396B (en) * 2017-08-17 2019-02-15 中国科学院工程热物理研究所 A kind of achievable bearing is total to the seal structure that chamber and bearing exocoel are pressed
CN111927633A (en) * 2020-08-20 2020-11-13 中国科学院工程热物理研究所 Graphite sealing structure with anti-fishbone dynamic pressure groove
CN111927635A (en) * 2020-08-20 2020-11-13 中国科学院工程热物理研究所 Graphite sealing structure with twill dynamic pressure groove
CN111927635B (en) * 2020-08-20 2022-03-29 中国科学院工程热物理研究所 Graphite sealing structure with twill dynamic pressure groove
CN111927633B (en) * 2020-08-20 2022-03-29 中国科学院工程热物理研究所 Graphite sealing structure with anti-fishbone dynamic pressure groove

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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan

Patentee after: China Hangfa South Industrial Co. Ltd.

Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan

Patentee before: China Southern Airlines Industry (Group) Co., Ltd.

CP01 Change in the name or title of a patent holder