CN217425485U

CN217425485U - Rotary dynamic seal oil-cooling aero-generator test connecting device

Info

Publication number: CN217425485U
Application number: CN202221174050.8U
Authority: CN
Inventors: 郭谊德; 裴轶; 刘朝阳; 王岩
Original assignee: XI'AN KANGBEI ELECTROMECHANICAL TECHNOLOGY CO LTD
Current assignee: XI'AN KANGBEI ELECTROMECHANICAL TECHNOLOGY CO LTD
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-09-13
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses a rotation type dynamic seal oil-cooling aeroengine tests connecting device, include: the device comprises a connecting mechanism, a rotating main shaft and a dynamic sealing mechanism; the main flange disc at one end of the connecting mechanism is fixedly connected with a flange of the oil-cooled generator, the auxiliary flange disc at the other end of the connecting mechanism is fixedly connected with the test driving mechanism, and an oil inlet pipe joint, a main oil return pipe joint and an auxiliary oil return pipe joint are arranged outside the connecting mechanism; the rotating main shaft is rotationally connected with the connecting mechanism, one end of the rotating main shaft is in transmission connection with a rotor of an external oil-cooled generator, and the other end of the rotating main shaft is in transmission connection with an output shaft of an external test driving mechanism; the rotating main shaft forms a mechanical seal with the connecting mechanism at the other end close to the rotating main shaft through the dynamic sealing mechanism. The utility model discloses a test actuating mechanism drive rotary main shaft rotates, and then drives the rotor rotation of the cold generator of oil and drives the cold generator of oil, and connecting line quantity is less, simple structure. The internal mechanical seal simplifies the test installation process and improves the test efficiency.

Description

Rotary dynamic seal oil-cooled aero-generator test connecting device

Technical Field

The utility model belongs to the technical field of civil aviation helicopter alternator test equipment, concretely relates to rotation type dynamic seal oil-cooled aeroengine test connecting device.

Background

The aircraft generator belongs to aircraft power supply equipment, and in recent years, the number of large airlines is increased along with the introduction of airplanes, and the maintenance amount of generator products is also increased year by year. The generator is an oil-cooled generator, and is driven by a mechanical connection test bench, but the circulation of each system of an internal oil way is ensured to be normal during testing.

The experimental connecting device of current oil-cooled alternator often adopts the outside oil circuit of drawing forth of multi-pipe way, and gas circuit system makes the inside airtight cavity that forms of casing, and the test process constantly pressurizes to casing inside to produce the sealed principle in airtight space, its shortcoming is: 1. the external oil circuit system is complex, the number of external pipe joints is too large, and the test efficiency is low. 2. Except the cooling oil way system, an air pressure detection system and the like are additionally arranged outside the cooling oil way system to seal the connecting device, so that the whole test system is complex in connection, high in cost and low in test efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a rotation type dynamic seal oil-cooled aerogenerator tests connecting device. The to-be-solved technical problem of the utility model is realized through following technical scheme:

the utility model provides a rotation type dynamic seal oil-cooled aeronautical generator test connecting device, includes: the device comprises a connecting mechanism, a rotating main shaft and a dynamic sealing mechanism;

the main flange disc at one end of the connecting mechanism is fixedly connected with a flange of the oil-cooled generator, the auxiliary flange disc at the other end of the connecting mechanism is fixedly connected with the test driving mechanism, and an oil inlet pipe joint, a main oil return pipe joint and an auxiliary oil return pipe joint are arranged outside the connecting mechanism;

the rotating main shaft is arranged in the connecting mechanism and is rotationally connected with the connecting mechanism, one end of the rotating main shaft is in transmission connection with a rotor of an external oil-cooled generator, and the other end of the rotating main shaft is in transmission connection with an output shaft of an external test driving mechanism;

the rotating main shaft forms a mechanical seal with the connecting mechanism at the other end close to the rotating main shaft through the dynamic sealing mechanism;

the oil inlet pipe joint is communicated with a cooling oil path of the oil-cooled generator through the main flange plate, and the main oil return pipe joint and the auxiliary oil return pipe joint are communicated with a plurality of oil return oil paths of the oil-cooled generator through the main flange plate.

In an embodiment of the present invention, the dynamic sealing mechanism includes: a first rotating member, a second rotating member and a stationary member;

the first rotating piece is positioned at the other end close to the rotating main shaft, sleeved on the rotating main shaft and contacted with the step of the rotating main shaft at one end;

the second rotating piece is sleeved on the rotating main shaft and fixedly connected with the rotating main shaft, and one end of the second rotating piece is arranged in the first rotating piece in a penetrating manner and is contacted with the annular boss of the first rotating piece;

the static part is sleeved on the second rotating part, is fixedly connected with the connecting mechanism, and is provided with a carbon ring on the end surface facing the first rotating part;

the carbon ring is in contact with an end face of the first rotating member.

In an embodiment of the present invention, the dynamic sealing mechanism further includes an adjusting gasket;

the adjusting gasket is positioned at the joint of the static part and the connecting mechanism and is fixedly arranged between the static part and the connecting mechanism.

In an embodiment of the present invention, the inner wall of the first rotating member is provided with the annular boss and the first sealing ring;

the first sealing ring is in contact with the step of the rotating main shaft and one side surface of the annular boss;

one end of the second rotating piece penetrates through the first rotating piece to be in contact with the other side face of the annular boss.

In an embodiment of the present invention, the second rotating member is fixedly connected to the rotating spindle through a screw.

In an embodiment of the present invention, the main flange plate is provided with an oil inlet, a main oil return port and a secondary oil return port;

the oil inlet is communicated with the oil inlet pipe joint and a cooling oil path of the oil-cooled generator;

the main oil return port is communicated with the main oil return pipe joint;

the secondary oil return port is communicated with the secondary oil return pipe joint;

the main oil return port, the auxiliary oil return port and the inner cavity of the main flange plate are communicated with the plurality of oil return oil passages.

In an embodiment of the present invention, an oil filling pipe is further disposed on the connecting mechanism;

the oil filling pipe is communicated with the bearing chamber.

In an embodiment of the present invention, the outside of the connecting mechanism is connected to the oil inlet pipe joint through a first joint mounting portion;

the outer part of the connecting mechanism is connected with the main oil return pipe joint through a second joint mounting part;

the outside of the connecting mechanism is connected with the secondary oil return pipe joint through a third joint mounting part.

In an embodiment of the invention, the main oil return pipe joint communicates with the bearing chamber of the connection mechanism.

In one embodiment of the present invention, an inner spacer ring and an outer spacer ring are disposed inside the bearing chamber;

the outer spacer ring is positioned between the two bearings in the bearing chamber, the end surfaces of the two ends of the outer spacer ring are respectively clung to the outer rings of the two bearings, and an annular groove extending along the circumferential direction is formed in the outer spacer ring;

a plurality of through holes are formed in the bottom of the annular groove and are distributed at intervals in the circumferential direction; wherein the annular groove is communicated with the orifice of the oil filling pipe;

the rotating main shaft penetrates through the outer spacer ring;

the inner spacer ring is sleeved on the rotating main shaft, is positioned in the outer spacer ring and is arranged at an interval with the outer spacer ring, and the end faces at two ends are respectively clung to the inner rings of the two bearings.

The utility model has the advantages that:

the utility model discloses a test actuating mechanism drive rotary main shaft rotates, and then the rotor that drives the cold generator of oil rotates and drives the cold generator of oil, in the test process, main oil return pipe joint on the coupling mechanism and from returning a plurality of oil return oil circuit intercommunications that oil return pipe joint passes through main flange dish and the cold generator of oil, the part cooling lubricating oil through oil cold generator mesocycle gets into main flange dish and is taken out by main oil return pipe joint and from returning oil pipe joint, the part cooling lubricating oil that gets into the inside bearing room of coupling mechanism is taken out by main oil return pipe joint, the pipeline quantity of connection is less, moreover, the steam generator is simple in structure, therefore, the installation is convenient, and the test efficiency is greatly improved. Meanwhile, the dynamic sealing mechanism and the cooling lubricating oil entering the connecting mechanism form mechanical seal with the rotating main shaft, other external systems are not needed, the test installation process and the whole test system are simplified, the cost is reduced, and the test efficiency is improved.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic view of an installation structure of a rotary dynamic seal oil-cooled aircraft generator test connection device provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rotary dynamic seal oil-cooled aircraft generator test connection device provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a dynamic sealing mechanism provided in an embodiment of the present invention;

fig. 4 is a schematic view of an installation structure of a connecting device and a generator provided by an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an inner spacer ring according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an outer spacer ring according to an embodiment of the present invention.

Description of the reference numerals:

10-a connection mechanism; 11-main flange; 12-a secondary flange; 13-an oil filling pipe; 14-a first joint mounting part; 15-a second joint mount; 16-a third joint mount; 17-an inner spacer ring; 18-an outer spacer ring; 181-annular groove; 19-a through hole; 20-rotating the main shaft; 30-a dynamic sealing mechanism; 31-a bearing; 40-oil-cooled generators; 42-main return; 43-from the return; 44-first end face oil return; 45-second end face oil return; 50-a test drive mechanism; 51-an output shaft; 60-oil inlet pipe joint; 61-an oil inlet; 70-main return line coupling; 71-main oil return; 80-from return pipe connection; 81-from the oil return; 91-a first rotating member; 911-annular boss; 92-a second rotating member; 93-stationary member; 94-carbocycle; 95-a first seal ring; 96-adjusting shim.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.

Example one

Referring to fig. 1 and 2, a rotary dynamic seal oil-cooled aircraft generator test connection device includes: a connecting mechanism 10, a rotating main shaft 20 and a dynamic sealing mechanism 30.

The main flange 11 at one end of the connecting mechanism 10 is fixedly connected with the flange of the oil-cooled generator 40, the auxiliary flange 12 at the other end of the connecting mechanism 10 is fixedly connected with the test driving mechanism 50, and the oil inlet pipe joint 60, the main oil return pipe joint 70 and the auxiliary oil return pipe joint 80 are arranged outside the connecting mechanism 10. The rotating main shaft 20 is arranged in the connecting mechanism 10, the rotating main shaft 20 is rotatably connected with the connecting mechanism 10, one end of the rotating main shaft 20 is in transmission connection with a rotor of an external oil-cooled generator 40, and the other end of the rotating main shaft 20 is in transmission connection with an output shaft 51 of an external test driving mechanism 50. The test driving mechanism 50 drives the rotating main shaft 20 to rotate, and the rotating main shaft 20 drives the rotor of the oil-cooled generator 40 to rotate so as to provide test power for the oil-cooled generator 40.

The rotary main shaft 20 forms a mechanical seal with the connecting mechanism 10 at the other end near the rotary main shaft 20 through the dynamic seal mechanism 30. The mechanical seal is formed to prevent cooling oil from entering the test drive mechanism 50.

The oil inlet pipe joint 60 is communicated with the cooling oil path of the oil-cooled generator 40 through the main flange 11, and the main oil return pipe joint 70 and the auxiliary oil return pipe joint 80 are communicated with a plurality of oil return paths of the oil-cooled generator 40 through the main flange 11.

In this embodiment, during the test, the cooling lubricant enters the main flange 11 of the connection mechanism 10 through the oil inlet pipe joint 60 and further enters the cooling oil path of the oil-cooled generator 40, after the inside of the oil-cooled generator 40 is damaged, a part of the cooling lubricant enters the main flange 11 through a plurality of oil return paths of the oil-cooled generator 40 and is pumped by the main oil return pipe joint 70 and the oil return pipe joint 80, and the other part of the cooling lubricant enters the bearing chamber of the connection mechanism 10 due to pressure, so as to cool and lubricate the bearing chamber. The dynamic sealing mechanism 30 and the cooling lubricant oil entering the inside of the connecting mechanism 10 form a mechanical seal with the connecting mechanism 10 and the rotating main shaft 20, so as to prevent the cooling lubricant oil from entering the test driving mechanism 50.

The oil return paths inside the oil-cooled generator 40 generally include four oil paths, i.e., a main oil return path 42, a sub oil return path 43, a first end surface oil return path 44, and a second end surface oil return path 45. In this embodiment, the four oil passages are respectively communicated with the two joints of the main oil return pipe joint 70 and the auxiliary oil return pipe joint 80 through the main flange 11.

In this embodiment, the oil outlet of the oil return paths of the oil-cooled generator 40 passes through the connecting device, and the oil outlet is drawn out through the two oil return pipe joints (the main oil return pipe joint 70 and the slave oil return pipe joint 80), so that the number of the oil return paths is small, the structure is simple, the installation is convenient, and the test efficiency is greatly improved. Meanwhile, the dynamic sealing mechanism 30 and the cooling lubricating oil entering the connecting mechanism 10 form mechanical seal with the rotating main shaft 20, so that other external systems are not needed, the test installation process and the whole test system are simplified, the cost is reduced, and the test efficiency is improved.

Wherein, each part of the connecting device forms sealing connection at the position needing sealing through a sealing element such as a sealing ring.

In one embodiment, the connecting device is connected to the oil-cooled generator 40 flange and the spline shaft of the rotor at one end and to the test drive mechanism 50 flange and the output spline shaft of the test stand at the other end. The connecting device is used for transmitting the power of the driving end of the test bed to the end of the oil-cooled generator 40, and because the motor belongs to the oil-cooled generator, the inner bearing chamber of the connecting device also needs to be lubricated, and an inner oil circuit system of the connecting device needs to meet the requirement that the lubricating oil in the oil-cooled generator 40 is supplied for cooling, and meanwhile, the cooling and lubrication of the inner bearing of the connecting device need to be ensured, and the condition that the cooling and lubricating oil flows into the end of the test driving mechanism 50 needs to be avoided.

The utility model discloses can be applicable to the maintenance detection of the generator of civil aircraft S-92 model, S-92 is the middle-sized helicopter of twin-engine that U.S. western science base aircraft company developed.

Example two

As shown in fig. 3, on the basis of the first embodiment, the present embodiment further defines a dynamic sealing mechanism 30, which includes: a first rotary member 91, a second rotary member 92 and a stationary member 93.

The dynamic sealing mechanism 30 is located at a position close to the end of the test driving mechanism 50, the first rotating member 91 is located at the other end close to the rotating main shaft 20, the first rotating member 91 is sleeved on the rotating main shaft 20, and one end of the first rotating member 91 is in contact with a step of the rotating main shaft 20. The second rotating member 92 is sleeved on the rotating main shaft 20, the second rotating member 92 is fixedly connected with the rotating main shaft 20, and one end of the second rotating member 92 is inserted into the first rotating member 91 and contacts with the annular boss 911 of the first rotating member 91. In the present embodiment, the first rotating member 91 and the second rotating member 92 rotate with the rotating main shaft 20. The stationary member 93 is sleeved on the second rotating member 92, the stationary member 93 is fixedly connected with the connecting mechanism 10, and a carbon ring 94 is arranged on an end surface of the stationary member 93 facing the first rotating member 91. The carbon ring 94 is in contact with an end surface of the first rotating member 91.

In this embodiment, the ring contact surfaces of the two relatively moving rotating members and the stationary member 93 are main seal surfaces, the carbon ring 94 of the stationary member 93 has elasticity, and after the cooling lubricant enters the bearing chamber and contacts the dynamic seal mechanism 30 after being connected to the oil line system, at least one pair of end surfaces perpendicular to the rotation axis of the dynamic seal mechanism 30 keeps fitting and relative sliding under the pressure of the cooling lubricant, the elastic action between the carbon ring 94 and the first rotating member 91, and the seal structure of other elements of the connecting mechanism 10, thereby forming a structure for preventing the cooling lubricant from leaking.

Wherein the dynamic seal mechanism 30 is positioned in the secondary flange 12. The outer diameter of the carbon ring 94 is the same as the outer diameter of the first rotating member 91. The material of the carbon ring 94 may be teflon, which has certain elasticity.

Specifically, as shown in fig. 3, an annular boss 911 and a first seal ring 95 are provided on an inner wall of the first rotating member 91. The first seal ring 95 is located between the step of the rotating spindle 20 and the annular boss 911. The first seal ring 95 is in contact with a step of the rotary spindle 20 and a side surface of the annular boss 911. One end of the second rotating member 92 penetrates the first rotating member 91 to contact the other side surface of the annular boss 911. The second rotating member 92 is fixedly connected to the rotating main shaft 20 by a screw, and the second rotating member 92 presses the first rotating member 91 against a step of the rotating main shaft 20, so that the first rotating member 91 and the rotating main shaft 20 are fixed.

Further, as shown in fig. 3, the dynamic sealing mechanism 30 further includes an adjustment gasket 96. The adjuster shim 96 is located at the junction of the stationary member 93 and the coupling mechanism 10, and the adjuster shim 96 is fixedly disposed between the stationary member 93 and the coupling mechanism 10. Specifically, the stationary member 93 may be fixed by screws sequentially passing through the stationary member 93, the adjusting shim 96, and the connecting mechanism 10. By selecting the adjusting shim 96 with different specifications, the axial position of the stationary member 93 can be adjusted, so that the elastic force of the contact between the carbon ring 94 of the stationary member 93 and the first rotating member 91 can be adjusted and controlled.

Further, as shown in fig. 2 and 4, the main flange plate 11 is provided with an oil inlet 61, a main oil return port 71 and a secondary oil return port 81. The oil return path of the oil-cooled generator 40 may communicate with the main oil return pipe joint 70 and the sub oil return pipe joint 80 through the main oil return port 71 and the sub oil return port 81.

The oil inlet 61 is communicated with the oil inlet pipe joint 60 and the cooling oil path of the oil-cooled generator 40. The cooling lubricating oil enters the oil inlet pipe joint 60 and enters the oil-cooled generator 40 through the oil inlet 61. The main oil return port 71 communicates with the main oil return pipe joint 70. The slave oil return port 81 communicates with the slave oil return pipe joint 80. The main oil return port 71, the slave oil return port 81, and the inner cavity of the main flange 11 communicate with a plurality of oil return passages. The main return pipe joint 70 communicates with the bearing chamber of the coupling mechanism 10.

In this embodiment, the cooling lubricant enters the oil-cooled generator 40 from the oil inlet 61 through the oil inlet pipe joint 60, and after the internal circulation of the oil-cooled generator 40, a part of the circulated cooling lubricant enters from the oil return path 43 through the oil-cooled generator 40 and is drawn from the oil return port 81 through the oil return pipe joint 80, and a part of the circulated cooling lubricant enters the main oil return port 71 through the main oil return path 42 and is drawn by the main oil return pipe joint 70. The rest of the cooling lubricating oil enters the inner cavity of the main flange plate 11 through the first end face oil return path 44, and then a part of the cooling lubricating oil is pumped away from the oil return pipe head, and a part of the cooling lubricating oil enters the bearing chamber due to pressure; a part of the lubricating oil enters the inner cavity of the main flange 11 through the second end surface oil return path 45, and then a part of the lubricating oil is pumped away by the main oil return pipe joint, and a part of the lubricating oil enters the bearing chamber due to pressure, and the cooling lubricating oil entering the bearing chamber is finally pumped away by the main oil return pipe joint 70. The inner cavity wall of the main flange 11 is provided with a communication through hole which is communicated with the main oil return pipe joint 70 and the auxiliary oil return pipe joint 80.

In this embodiment, the cooling oil entering the bearing chamber cools and lubricates the bearing and contacts the dynamic seal mechanism 30. The connection mechanism 10 is also provided with an oil filling pipe 13. The filler pipe 13 communicates with the bearing chamber. For better cooling of the lubricated bearing chamber, cooling oil can be separately injected into the bearing chamber through the oil fill pipe 13 to access an external source of oil, which is eventually pumped away by the main oil return pipe joint 70.

Specifically, the oil inlet 61 and the oil inlet pipe joint 60 are communicated through an oil inlet path inside the connecting mechanism 10, the main oil return port 71 and the main oil return pipe joint 70 are communicated through a main oil path inside the connecting mechanism 10, the slave oil return port 81 and the slave oil return pipe joint 80 are communicated through a slave oil path inside the connecting mechanism 10, and the oil filling pipe 13 and the bearing chamber are communicated through a bearing chamber oil filling path of the connecting mechanism 10. The oil inlet passage, the main oil passage, the auxiliary oil passage and the oil filling passage inside the connecting mechanism 10 are respectively connected with an external oil source system through an oil inlet pipe joint 60, a main oil return pipe joint 70, an auxiliary oil return pipe joint 80 and an oil filling pipe 13.

In this embodiment, connecting device tears the sealed lid open before the assembly, gets rid of the original-pack lubricating grease of bearing, and inside is special for the lubricated oil piping system that designs of bearing, and outside oil source headtotail annotates oil pipe 13 and directly pours cooling lubricating oil into the bearing room into, avoids because the cooling is not enough, defects such as bearing vibration, noise that lead to have prolonged life low.

It should be noted that, in the related art, the oil inlet and the oil return in the existing connection device are not separate oil paths, and then the interference of the oil inlet and the oil return can occur, the oil return cannot normally discharge oil, the oil inlet cannot normally feed oil, and the phenomenon of disordered oil stirring of the oil path occurs due to the fact that local vacuum is formed inside the oil inlet, and meanwhile, the lubricating oil of the connection device is made of oil sprayed from the port 40 of the oil cooling generator, so that the lubricating and cooling effects are poor. And the connecting device of this application, oil inlet 61 and two oil return openings mutually independent, the business turn over oil content is passed in and out through advancing the independent oil circuit of oil return correspondence respectively, avoids appearing advancing the oil return and interferes. Meanwhile, the oil-cooled generator 40 and the bearing chamber can be drained in time by returning oil through the two oil return ports and draining oil through the main oil return pipe joint 70 to the bearing chamber. Therefore, the phenomenon of oil stirring can be avoided as much as possible. And, bearing chamber and main oil return mouth and main oil return union coupling intercommunication, whole oil pressure is in the negative pressure, and the oil output is slightly greater than the oil feed, guarantees in time to return the oil and arranges the oil. In addition, cooling lubricating oil can be injected into the bearing chamber from an external oil source through the oil filling pipe 13, and the cooling and lubricating effects of the bearing are improved.

Further, as shown in fig. 2 and 4, the outside of the coupling mechanism 10 is coupled to the oil inlet pipe joint 60 through the first joint installation part 14; the outside of the connection mechanism 10 is connected to the main oil return pipe joint 70 through the second joint mounting part 15; the outside of the connection mechanism 10 is connected to the slave oil return pipe joint 80 via the third joint mounting portion 16. The first joint mounting portion 14, the second joint mounting portion 15 and the third joint mounting portion 16 are all disposed on the connecting mechanism 10, the oil inlet pipe joint 60 is mounted on the first joint mounting portion 14 and communicated with the oil inlet 61 through an inner cavity of the first joint mounting portion 14, the main oil return pipe joint 70 is mounted on the second joint mounting portion 15 and communicated with the main oil return port 71 through an inner cavity of the second joint mounting portion 15, and the slave oil return pipe joint 80 is mounted on the third joint mounting portion 16 and communicated with the slave oil return port 81 through an inner cavity of the third joint mounting portion 16.

In one embodiment, as shown in fig. 4, the stationary member 93 is fixedly connected to the connecting base of the connecting mechanism 10, the main flange 11 and the secondary flange 12 are located at two ends of the connecting base, the bearing 31 is disposed in the connecting base, and the rotating shaft 20 is rotatably connected to the connecting base through the bearing 31.

In one embodiment, as shown in fig. 4, 5 and 6, two bearings 31 are arranged in the bearing chamber, and the inner and

outer spacers

17, 18 are arranged inside the bearing chamber. The inner spacer 17 and the outer spacer 18 are located between two bearings 31 in the bearing chamber, and end faces of both ends of the outer spacer 18 are respectively attached to outer rings of the two bearings 31 to support the outer rings of the bearings 31. The outer wall of the outer spacer ring 18 is provided with an annular groove 181 extending along the circumferential direction, and the bottom of the annular groove 181 is provided with a plurality of through holes 19 which are sequentially distributed at intervals along the circumferential direction; wherein the annular groove 181 communicates with the orifice of the filler pipe 13, the orifice of the filler pipe 13 opening into the bearing chamber is aligned with the annular groove 181, and cooling lubricant can enter the annular groove 181 from the filler pipe 13 and pass through the through-hole 19 into the bearing chamber. A rotating spindle 20 passes through the outer spacer ring 18. The inner rings of the inner spacer ring 17 and the bearing 31 are sleeved on the rotating main shaft 20, the inner spacer ring 17 is located in the outer spacer ring 18, the inner spacer ring 17 and the outer spacer ring 18 are arranged at intervals, and the end faces of the two ends of the inner spacer ring 17 are respectively attached to the inner rings of the two bearings 31 to support the inner rings of the bearing 31. In the embodiment, the inner ring and the outer ring of the bearing can be always kept on the same plane by the inner spacer ring and the outer spacer ring, and the bearing retainer can be effectively prevented from being damaged, so that the service life of the whole connecting device is prolonged. Meanwhile, cooling lubricating oil in the bearing chamber can temporarily stay in the through hole 19, and oil can be collected in a short time, so that the bearing can be sufficiently cooled and lubricated, and the cooling effect is improved.

In one embodiment, an annular groove is formed on the inner wall of the bearing chamber, the annular groove is aligned with the annular groove 181, the widths of the annular groove and the annular groove 181 are equal, the pipe orifice of the oil filling pipe 13, which is introduced into the bearing chamber, is located on the bottom of the annular groove, so that the pipe orifice is communicated with the annular groove and is further communicated with the annular groove 181, and cooling lubricating oil can enter the space between the annular groove and the annular groove 181 from the oil filling pipe 13 and enter the bearing chamber through the through hole 19.

In a specific embodiment, the oil passages and the dynamic sealing system in the connecting device can successfully realize the performance test of oil passage circulation after the maintenance of the S-92 oil-cooled alternating-current generator, the oil inlet and return passages are normal, the internal circulation is normal in the test process, and the oil drainage phenomenon is not generated.

The design and matching of the shell of the connecting device, the rotating main shaft 20 and each retainer inside and the selection of the bearing successfully complete the operation at high rotating speed of 12000 r/min, and the test has small vibration and no noise at high rotating speed.

The bearing lubrication adopts aeronautical lubricating oil No. II of the flying horse, before the assembly, the sealing cover is removed, and the original lubricating grease is removed, so that the bearing is in direct contact with the cooling lubricating oil, the service life of the bearing is greatly prolonged, and the limit rotating speed of the bearing is greatly improved.

The rotating main shaft 20 is made of 30SiMnSiA through tests, the heat treatment hardening and tempering hardness is HRC28-32, the toughness and the hardenability are good, the processing deformation is small, the fatigue resistance is quite excellent, and the coaxiality of the generator spline and the test bed spline is within 0.02 at the rotating speed of 12000 r/min.

The overall weight of the connecting device is light.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a rotation type dynamic seal oil-cooled aeronautical generator test connecting device which characterized in that includes: the device comprises a connecting mechanism (10), a rotating main shaft (20) and a dynamic sealing mechanism (30);

the main flange plate (11) at one end of the connecting mechanism (10) is fixedly connected with a flange of the oil-cooled generator (40), the auxiliary flange plate (12) at the other end of the connecting mechanism is fixedly connected with the test driving mechanism (50), and an oil inlet pipe joint (60), a main oil return pipe joint (70) and an auxiliary oil return pipe joint (80) are arranged outside the connecting mechanism;

the rotating main shaft (20) is arranged in the connecting mechanism (10), is rotatably connected with the connecting mechanism (10), has one end in transmission connection with a rotor of an external oil-cooled generator (40), and has the other end in transmission connection with an output shaft (51) of an external test driving mechanism (50);

the rotating main shaft (20) forms a mechanical seal with the connecting mechanism (10) at the other end close to the rotating main shaft (20) through the dynamic sealing mechanism (30);

the oil inlet pipe joint (60) is communicated with a cooling oil path of the oil-cooled generator (40) through the main flange plate (11), and the main oil return pipe joint (70) is communicated with the auxiliary oil return pipe joint (80) through a plurality of oil return oil paths of the oil-cooled generator (40) through the main flange plate (11).

2. A rotary dynamic seal oil-cooled aircraft generator test connection as claimed in claim 1, characterized in that the dynamic seal mechanism (30) comprises: a first rotating member (91), a second rotating member (92), and a stationary member (93);

the first rotating piece (91) is positioned close to the other end of the rotating main shaft (20), sleeved on the rotating main shaft (20) and contacted with the step of the rotating main shaft (20) at one end;

the second rotating piece (92) is sleeved on the rotating main shaft (20), is fixedly connected with the rotating main shaft (20), and has one end penetrating into the first rotating piece (91) to be contacted with the annular boss (911) of the first rotating piece (91);

the static part (93) is sleeved on the second rotating part (92) and fixedly connected with the connecting mechanism (10), and a carbon ring (94) is arranged on the end face, facing the first rotating part (91), of the static part;

the carbon ring (94) is in contact with an end face of the first rotating member (91).

3. A rotary dynamic seal oil-cooled aircraft generator test connection as claimed in claim 2, wherein said dynamic seal mechanism (30) further comprises a spacer shim (96);

the adjusting gasket (96) is positioned at the joint of the static part (93) and the connecting mechanism (10) and is fixedly arranged between the static part (93) and the connecting mechanism (10).

4. A rotary dynamic seal oil-cooled aircraft generator test connection device according to claim 2, characterized in that the inner wall of the first rotary member (91) is provided with the annular boss (911) and the first seal ring (95);

the first sealing ring (95) is in contact with the step of the rotating main shaft (20) and one side surface of the annular boss (911);

one end of the second rotating piece (92) penetrates into the first rotating piece (91) to be in contact with the other side face of the annular boss (911).

5. A rotary dynamic seal oil-cooled aircraft generator test connection as claimed in claim 2, characterised in that the second rotary member (92) is fixedly connected to the rotary main shaft (20) by means of screws.

6. The rotary type dynamic seal oil-cooled aircraft generator test connection device according to claim 1, wherein the main flange plate (11) is provided with an oil inlet (61), a main oil return port (71) and a secondary oil return port (81);

the oil inlet (61) is communicated with the oil inlet pipe joint (60) and a cooling oil path of the oil-cooled generator (40);

the main oil return port (71) is communicated with the main oil return pipe joint (70);

the secondary oil return port (81) is communicated with the secondary oil return pipe joint (80);

the main oil return port (71), the auxiliary oil return port (81) and the inner cavities of the main flange plate (11) are communicated with the oil return oil passages.

7. A rotary dynamic seal oil-cooled aircraft generator test connection device according to claim 1, characterized in that an oil filling pipe (13) is further arranged on the connection mechanism (10);

the oil filling pipe (13) is communicated with the bearing chamber of the connecting mechanism (10).

8. The rotary type dynamic seal oil-cooled aircraft generator test connection device as claimed in claim 1, wherein the exterior of the connection mechanism (10) is connected with the oil inlet pipe joint (60) through a first joint installation part (14);

the outside of the connecting mechanism (10) is connected with the main oil return pipe joint (70) through a second joint mounting part (15);

the outside of the connecting mechanism (10) is connected with the secondary oil return pipe joint (80) through a third joint installation part (16).

9. A rotary dynamic seal oil cooled aircraft generator test connection as claimed in claim 1, characterised in that the main oil return pipe connection (70) communicates with the bearing chamber of the connection mechanism (10).

10. A rotary dynamic seal oil-cooled aircraft generator test connection device according to claim 7, characterized in that an inner spacer ring (17) and an outer spacer ring (18) are arranged inside the bearing chamber;

the outer spacer ring (18) is positioned between the two bearings (31) in the bearing chamber, the end surfaces of the two ends are respectively clung to the outer rings of the two bearings (31), and the outer wall of the outer spacer ring is provided with an annular groove (181) extending along the circumferential direction;

a plurality of through holes (19) which are distributed at intervals along the circumferential direction are formed in the groove bottom of the annular groove (181); wherein the annular groove (181) communicates with the orifice of the filler pipe (13);

the rotating main shaft (20) penetrates through the outer spacer ring (18);

the inner spacer ring (17) is sleeved on the rotating main shaft (20), is positioned in the outer spacer ring (18) and is arranged at an interval with the outer spacer ring (18), and the end faces of the two ends of the inner spacer ring are respectively clung to the inner rings of the two bearings (31).