CN210509971U - Small hole throttling air bearing for turbine direct-connected high-speed motor - Google Patents

Small hole throttling air bearing for turbine direct-connected high-speed motor Download PDF

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Publication number
CN210509971U
CN210509971U CN201921085799.3U CN201921085799U CN210509971U CN 210509971 U CN210509971 U CN 210509971U CN 201921085799 U CN201921085799 U CN 201921085799U CN 210509971 U CN210509971 U CN 210509971U
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bearing
plate
main shaft
bearing frame
towards
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CN201921085799.3U
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Inventor
赵文清
马建峰
徐和军
欧阳庆
娄一杰
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Suzhou Sida Turbine Power Technology Co Ltd
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Suzhou Sida Turbine Power Technology Co Ltd
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Abstract

The utility model discloses a be applied to transmission field's an aperture throttle air supporting bearing that is used for turbine to directly link high-speed electric machine, its structure includes bearing and bearing frame, the bearing frame includes air inlet and limiting plate, the bearing includes and surrounds the annular cavity who forms towards the bearing frame by first side, bottom surface and second side, first side and second side include the connection terminal surface towards the bearing frame, be provided with the sealing ring between connection terminal surface and the bearing frame, bottom surface and second side are provided with a plurality of pinholes of giving vent to anger that are linked together with the annular cavity, the pinhole of giving vent to anger is respectively towards main shaft and thrust dish. The aperture throttling air bearing can jack up the dead weight of the main shaft in the application process, can balance the axial thrust of the main shaft, ensures that the turbine is directly connected with the main shaft of the high-speed motor and the bearing to rotate at a high speed without friction, reduces energy loss, improves transmission efficiency, reduces structural abrasion of the joint of the main shaft and the rotating shaft, and prolongs the service life of the device.

Description

Small hole throttling air bearing for turbine direct-connected high-speed motor
Technical Field
The utility model relates to a transmission field uses a aperture throttle air supporting bearing that is used for turbine directly to link high-speed motor.
Background
In order to ensure the transmission efficiency, a sliding oil bearing sleeve is generally used on equipment in which a turbine is directly connected with a high-speed motor and is sleeved at two end parts of a rotating shaft. The device structure is complicated, and equipment is huge, takes place the condition that the lubricating oil pollutes the working gas easily, is unfavorable for the turbine directly to link the steady of high-speed electrical equipment work and goes on. Meanwhile, in the working contact process of the rotating shaft and the main shaft, the filling amount of lubricating oil is not easy to control, and the pollution of working gas is easy to occur when the filling amount is large. When the working time is longer, the connecting structure has deviation or less lubricating oil, the friction force between the bearing and the main shaft can be increased, the transmission efficiency is reduced, meanwhile, the abrasion at the connecting structure is increased, the service life of the device is shortened, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide an effectively guarantee transmission efficiency's a aperture throttle air supporting bearing that is used for turbine directly to link high-speed motor.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a aperture throttle air supporting bearing for high speed motor is directly linked to turbine, includes bearing and bearing frame, the bearing is used for the cover to locate on the main shaft and is close to the thrust plate of main shaft, the bearing frame cover is located outside the bearing, the bearing frame is including the air inlet that is used for high-pressure gas to get into, the bearing frame is provided with the limiting plate perpendicularly towards its central line, the limiting plate is located the bearing frame and keeps away from the tip of thrust plate, the bearing includes first side, bottom surface and second side, first side, bottom surface and second side surround and form the annular chamber towards the bearing frame, the air inlet is linked together with the annular chamber, first side and second side include the connection terminal surface towards the bearing frame, be provided with the sealing ring between connection terminal surface and the bearing frame, first side is close to the limiting plate, the second side is towards the thrust plate, bottom surface, when the bearing is installed on the main shaft, the small air outlet holes face the main shaft and the thrust disc respectively.
In the working process, the air-floating bearing simultaneously forms an air film between the main shaft and the thrust disk through the small air outlet holes, so that the dead weight of the main shaft can be jacked up in the operation process by the air film, the axial thrust of the main shaft can be balanced, the main shaft of the turbine directly connected with the high-speed motor and the bearing are free of friction and rotate at a high speed, the transmission efficiency is improved, the energy conversion rate is increased, meanwhile, the abrasion to the main shaft structure is reduced, and the service life of each structure is prolonged.
Further, the small gas outlet hole comprises a gas inlet facing the annular chamber and a gas outlet communicated with the outside, and the cross-sectional area of the gas outlet is smaller than that of the gas inlet.
Further, the connecting end face is provided with an annular groove for placing a sealing ring.
The utility model has the advantages that:
1. the small-hole throttling air bearing can jack up the dead weight of the main shaft in the application process, and can balance the axial thrust of the main shaft at the same time, so that the main shaft of the turbine direct-connected high-speed motor and the bearing can rotate at high speed without friction, the energy loss is reduced, the transmission efficiency is improved, the structural abrasion of the joint of the main shaft and the rotating shaft is reduced, and the service life is prolonged;
2. the sealing ring can effectively seal high-pressure gas in the annular cavity, avoid gas leakage from the joint, provide guarantee for the air floatation effect, and simultaneously can automatically adjust the concentricity of the bearing and the main shaft, thereby improving the operation reliability of the equipment and prolonging the service life;
3. the high-pressure gas used by the bearing can use the working gas of the turbine or other gases which do not influence the working gas, thereby effectively avoiding the phenomenon of polluting the working gas.
Drawings
Fig. 1 is a schematic view of a connection structure between a bearing and a main shaft of a small-hole throttling air bearing for a turbine direct-coupled high-speed motor according to the present invention;
FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;
labeled as: the bearing seat comprises a bearing seat 1, an air inlet 11, a limiting plate 2, a bearing 3, a first side plate 31, a bottom plate 32, a second side plate 33, an annular cavity 34, an annular groove 35, an air outlet small hole 36, an air outlet inlet 361, an air outlet 362, a sealing ring 4, a main shaft 5 and a thrust disc 6.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
The first side plate 31 and the second side plate 33 of the bearing 3 of the air bearing are of the same annular structure, the bottom plate 32 is of a cylindrical structure, and the first side plate 31 and the second side plate 33 are respectively sleeved and welded at two ends of the bottom plate 32. The inner diameters of the first side plate 31 and the second side plate 33 are the same as the outer diameter of the bottom plate 32, and the first side plate 31 and the second side plate 33 are parallel and perpendicular to the central axis of the bottom plate 32, so that the first side plate 31, the bottom plate 32 and the second side plate 33 surround and form an annular chamber 34. In addition to the above production manner, the first side plate 31, the bottom plate 32, and the second side plate 33 can be directly manufactured by turning a whole metal. As shown in fig. 1, the bottom plate 32 and the second side plate 33 are provided with a plurality of small air outlet holes 36. The small air outlet hole 36 penetrates the bottom plate 32 and the second side plate 33, and has a structure as shown in fig. 2, and has a larger air outlet inlet 361 and a smaller air outlet 362. The connecting end parts of the first side plate 31 and the second side plate 33 far away from the bottom plate 32 are provided with annular grooves 35, and the annular grooves 35 are used for placing the sealing rings 4 in the connecting process. As shown in figure 1, the inner diameter of the bearing seat 1 is matched with the maximum outer diameter of the bearing 3, so that the connection sealing performance of two connecting pieces can be ensured in the subsequent installation process. Meanwhile, the end part of the bearing seat 1 is connected with an annular limiting plate 2 and is connected with the bearing seat 1 in a way of being vertical to the central axis.
When the air bearing is installed and used, firstly, a worker sleeves the sealing ring 4 in the annular groove 35 of the bearing 3. The sealing ring 4 is usually made of rubber or polytetrafluoroethylene, and has certain elasticity, so as to ensure the exertion of the sealing performance of the subsequent sealing ring 4. The depth of the annular groove 35 is smaller than the thickness of the sealing ring 4, i.e. there is still a part of the structure that is higher than the end surface of the bearing 3 when the sealing ring 4 is located in the annular groove 35. Then, the worker mounts the bearing 3 with the seal ring 4 in the bearing housing 1. At the moment, the inner surface of the bearing seat 1 gives an acting force towards the central shaft of the bearing 3 to the rubber ring 4, so that the rubber ring is deformed, and meanwhile, the sealing ring 4 is used for filling a connecting gap between the bearing seat 1 and the bearing 3. After the bearing 3 moves to the corresponding position of the bearing seat 1, the worker installs the limiting plate 2 at one end of the bearing seat 1. At this time, the limit plate 2 is close to and faces the first side plate 31, and the position of the end of the bearing 3 where the first side plate 31 is installed is limited relative to the boss base 1. The connected air bearing is sleeved on the spindle 5 along the axis, at this time, the bottom plate 32 faces the outer surface of the spindle 5, the second side plate 33 faces the thrust disk 6 at the end of the spindle 5, the first side plate 31 is located at one end far away from the thrust disk 6, and then the thrust disk 6 performs a limiting operation on the mounting end of the second side plate 33 of the bearing 3. At this time, the air bearing is completely installed, and the structure is shown in fig. 1. In the connection process, the worker can also firstly perform the sleeving connection of the bearing 3 and the main shaft 5 and then perform the connection of the bearing seat 1. The connection sequence can be selected by the staff according to the actual situation. The embodiment is one of the connection modes, and technicians can replace the relative positions of the structures according to actual conditions.
In the use, outside high-pressure gas gets into annular chamber 34 through the air inlet 11 of bearing frame 1 in, because install sealing washer 4 between the connection terminal surface of first curb plate 31 and second curb plate 2 and the axle sleeve seat 1, has improved the structural connection leakproofness, has avoided the gas in the annular chamber 34 to spill from its junction, makes inside gas only spill over through giving vent to anger aperture 36. Aperture throttle air supporting bearing can form the air film between bearing 3 and main shaft 5 and thrust disc 6, under limiting plate 2's the effect of blockking, the relative position of bearing 3 with bearing frame 1 has been guaranteed, avoided bearing 3 to lie in the air film effect between thrust disc 6 down along axial removal, then the dead weight that the air film that this air supporting bearing produced can jack-up main shaft 5 in the course of the work, balanced main thrust of thrust disc 6 simultaneously, guarantee that the turbine directly links high speed motor's main shaft 5 and bearing 3 frictionless high-speed rotation, reduce the wearing and tearing of structure, and the service life is prolonged. Meanwhile, the high-pressure gas used by the bearing 3 can be the working gas of a turbine or other gases which do not influence the working gas, so that the phenomenon of polluting the working gas is effectively avoided, and the working progress is ensured. In addition, above-mentioned sealing washer 4 can make things convenient for effectual sealed high-pressure gas on the one hand, and on the other hand can also be from the concentricity of adjusting bearing 3 and main shaft 5, improve equipment reliability and life.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (3)

1. The utility model provides a aperture throttle air bearing for turbine directly links high speed motor, includes bearing (3) and bearing frame (1), bearing (3) are used for the cover to locate main shaft (5) on and are close to thrust disc (6) of main shaft (5), outside bearing (3) were located to bearing frame (1) cover, bearing frame (1) is including air inlet (11) that are used for the high-pressure gas to get into, its characterized in that, bearing frame (1) is provided with limiting plate (2) perpendicularly towards its central line, limiting plate (2) are located bearing frame (1) and keep away from the tip of thrust disc (6), bearing (3) are including first curb plate (31), bottom plate (32) and second curb plate (33), first curb plate (31), bottom plate (32) and second curb plate (33) surround and form annular chamber (34) towards bearing frame (1), air inlet (11) are linked together with annular chamber (34), first curb plate (31) and second curb plate (33) are including the connection terminal surface towards bearing frame (1), be provided with sealing washer (4) between connection terminal surface and bearing frame (1), first curb plate (31) are close to limiting plate (2), second curb plate (33) are towards thrust dish (6), bottom plate (32) and second curb plate (33) are provided with a plurality of and annular cavity (34) looks UNICOM's small hole of giving vent to anger (36), when bearing (3) are installed on main shaft (5), small hole of giving vent to anger (36) are respectively towards main shaft (5) and thrust dish (6).
2. The aperture throttling airfoil bearing for the turbo direct connection high speed motor according to claim 1, characterized in that the outlet aperture (36) comprises an outlet inlet (361) facing the annular chamber (34) and an outlet (362) communicating with the outside, the outlet (362) having a cross-sectional area smaller than the outlet inlet (361).
3. The small-bore throttling air bearing for the turbine direct-connected high-speed motor according to claim 1, characterized in that the connecting end face is provided with an annular groove (35) for placing a sealing ring (4).
CN201921085799.3U 2019-07-12 2019-07-12 Small hole throttling air bearing for turbine direct-connected high-speed motor Active CN210509971U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921085799.3U CN210509971U (en) 2019-07-12 2019-07-12 Small hole throttling air bearing for turbine direct-connected high-speed motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921085799.3U CN210509971U (en) 2019-07-12 2019-07-12 Small hole throttling air bearing for turbine direct-connected high-speed motor

Publications (1)

Publication Number Publication Date
CN210509971U true CN210509971U (en) 2020-05-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921085799.3U Active CN210509971U (en) 2019-07-12 2019-07-12 Small hole throttling air bearing for turbine direct-connected high-speed motor

Country Status (1)

Country Link
CN (1) CN210509971U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112727927A (en) * 2020-12-28 2021-04-30 北京理工大学 Air bearing for air compressor of fuel cell system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112727927A (en) * 2020-12-28 2021-04-30 北京理工大学 Air bearing for air compressor of fuel cell system
CN112727927B (en) * 2020-12-28 2021-11-02 北京理工大学 Air bearing for air compressor of fuel cell system

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