Permanent magnet suspension bearing applied to turbine

Abstract

The permanent magnet suspension bearing comprises a bearing installation rotor, a first protection assembly is arranged at one end of the bearing installation rotor, a second protection assembly is arranged on the first protection assembly, an auxiliary assembly is arranged on the inner wall of the second protection assembly, and a cleaning assembly is installed on one side of a filter screen. Through the second protection assembly arranged on the first protection assembly, protection can be carried out when the surface of the permanent magnet suspension bearing of the turbine is collided, the situation that the permanent magnet suspension bearing of the turbine is damaged is reduced, meanwhile, an auxiliary assembly arranged on the second protection assembly can filter impurities in cooling gas of the permanent magnet suspension bearing of the turbine, and the cooling gas of the permanent magnet suspension bearing of the turbine is cooled. By means of the first protection assembly arranged on the bearing installation rotor, auxiliary cooling treatment can be conveniently conducted on the permanent magnet suspension bearing of the turbine, meanwhile, the cleaning assembly arranged on the filter screen facilitates cleaning and discharging of impurities attached to the filter screen, and the cooling effect of the permanent magnet suspension bearing of the turbine is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, concretely related to a kind of permanent magnetic suspension bearing applied to turbine. BACKGROUND

[0002] Permanent magnetic suspension bearing utilizes magnetic force to suspend the rotor of turbine in the air, so that there is no mechanical contact between rotor and stator. Its basic principle is to install annular permanent magnet on the rotor and stator, and to realize the suspension and stable rotation of the rotor by using the mutual attraction and repulsion between the magnets. When the rotational speed reaches a certain value, the rotational inertia of the rotor will maintain its stable rotation.

[0003] However, the permanent magnetic suspension bearing of turbine cannot be protected when in use, so that the permanent magnetic suspension bearing of turbine is easily damaged. At the same time, the permanent magnetic suspension bearing of turbine is easy to generate heat after long time use, and the cooling gas entering the cooling process contains impurities, which is easy to damage the cooling process.

[0004] For the problems in the related art, there is no effective solution at present. UTILITY MODEL CONTENT

[0005] For the problems in the related art, the utility model provides a kind of permanent magnetic suspension bearing applied to turbine to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the following specific technical solutions:

[0007] A kind of permanent magnetic suspension bearing applied to turbine, including bearing installation rotor, the end of bearing installation rotor is provided with protection assembly one, protection assembly one is provided with protection assembly two, protection assembly two includes the protection groove of protection assembly one surface opening, the inner wall of protection groove is fixedly connected with multiple spring sleeve telescopic rods, one end of spring sleeve telescopic rod is fixed with protection plate one;

[0008] The inner wall of protection assembly two is provided with auxiliary assembly, auxiliary assembly includes auxiliary frame fixedly arranged on the inner wall of protection assembly two, multiple auxiliary grooves are opened on auxiliary frame, filter screen and activated carbon plate are installed on the inner wall of auxiliary groove, cleaning assembly is installed on one side of filter screen.

[0009] Further, protection assembly one includes multiple bearing seats provided on bearing installation rotor, turbine shell one and turbine shell two are connected to bearing seat, protection cavity is opened on turbine shell one and turbine shell two, cooling pipe is installed on the inner wall of protection cavity.

[0010] One end of the cooling pipe penetrates turbine shell one and turbine shell two and is connected with a cooling box, the other end of the cooling pipe penetrates turbine shell one and turbine shell two and is connected with a circulating pump, one end of the circulating pump penetrates one side of the cooling box, the inner wall of the cooling box is fixedly connected with an auxiliary frame, semiconductor refrigeration pieces are arranged on the two sides of the cooling box, and an air inlet valve is arranged on one side of the cooling box.

[0011] Further, the cleaning assembly comprises a multi-stage electric telescopic rod mounted on one side of the cooling box, a cleaning brush is arranged at the output end of the multi-stage electric telescopic rod, the cleaning brush is in contact with the filter screen, a chip pushing plate is fixedly connected to one end of the cleaning brush, a chip outlet is formed in one side of the cooling box, an installation cavity is formed in the inner wall of the chip outlet, a micro electric telescopic rod is fixedly installed in the inner wall of the installation cavity, and a shielding plate is fixedly installed at one end of the micro electric telescopic rod.

[0012] Further, a maintenance opening is formed in the upper portion of the cooling box, a sealing cover is hinged to the inner wall of the maintenance opening, and a plurality of buckles are fixedly connected between the sealing cover and one side of the cooling box.

[0013] Further, a plurality of mounting seats are fixedly arranged in the inner walls of turbine shell one and turbine shell two, a permanent magnet suspension bearing body is mounted in the inner wall of each mounting seat, and the permanent magnet suspension bearing body is sleeved on the bearing mounting rotor.

[0014] Further, a plurality of protective springs are fixedly connected to the inner walls of the mounting seats, and a protective plate two is fixedly connected to one end of each protective spring.

[0015] Further, a plurality of fixing screws are threadedly connected to turbine shell one and turbine shell two.

[0016] The turbine machine has the advantages that:

[0017] (1) The protective assembly two arranged on the protective assembly one can protect the surface of the permanent magnet suspension bearing of the turbine machine when the surface is impacted, so that the damage of the permanent magnet suspension bearing of the turbine machine is reduced, and the auxiliary assembly arranged on the protective assembly two can filter the impurities in the cooling gas of the permanent magnet suspension bearing of the turbine machine, so that the damage of the cooling position of the permanent magnet suspension bearing of the turbine machine is reduced.

[0018] (2) The protective assembly one arranged on the bearing mounting rotor can assist in cooling the permanent magnet suspension bearing of the turbine machine, and the cleaning assembly arranged on the filter screen can clean and discharge the impurities attached to the filter screen, so that the cooling effect of the permanent magnet suspension bearing of the turbine machine is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 is a structure schematic diagram of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application;

[0021] Figure 2 is a structure schematic diagram of a part of a protection assembly of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application Figure One ;

[0022] Figure 3 is a structure schematic diagram of a part of a protection assembly and a protection assembly two of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application;

[0023] Figure 4 is a structure schematic diagram of a part of a protection assembly of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application Figure Two ;

[0024] Figure 5 is a structure schematic diagram of an auxiliary assembly of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application;

[0025] Figure 6 is a structure schematic diagram of a mounting seat of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application;

[0026] Figure 7 is a structure schematic diagram of a cleaning assembly of a permanent magnetic suspension bearing applied to a turbine according to an embodiment of the present application.

[0027] In the drawings:

[0028] 1. Bearing mounting rotor; 2. Protective component one; 201. Bearing housing; 202. Turbine housing one; 203. Turbine housing two; 204. Cooling pipe; 205. Cooling box; 206. Circulating pump; 207. Semiconductor cooling chip; 208. Inlet valve; 3. Protective component two; 301. Spring-loaded telescopic rod; 302. Protective plate one; 4. Auxiliary components; 401. Auxiliary frame; 402. Filter screen; 403. Activated carbon plate; 5. Cleaning components; 501. Multi-stage electric telescopic rod; 502. Cleaning brush; 503. Chip pusher; 504. Miniature electric telescopic rod; 505. Baffle plate; 6. Sealing cover; 7. Lock; 8. Mounting base; 9. Permanent magnet levitation bearing body; 10. Protective spring; 11. Protective plate two; 12. Fixing screws. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] According to an embodiment of the present invention, a permanent magnet levitation bearing for use in a turbine is provided.

[0031] Example 1;

[0032] like Figures 1-5 As shown, a permanent magnet levitation bearing for a turbine according to an embodiment of the present invention includes a bearing mounting rotor 1. One end of the bearing mounting rotor 1 is provided with a protective component 2. The protective component 2 includes a plurality of bearing seats 201 provided on the bearing mounting rotor 1. There are two bearing seats 201. The bearing seats 201 are connected to a turbine housing 1 202 and a turbine housing 203. A protective cavity is opened on the turbine housing 1 202 and the turbine housing 203. A cooling pipe 204 is installed on the inner wall of the protective cavity.

[0033] The inner wall of the turbine shell one 202 and the turbine shell two 203 is fixedly provided with a plurality of mounting seats 8, the number of the mounting seats 8 is two, the inner wall of the mounting seat 8 is provided with a permanent magnet suspension bearing body 9, the permanent magnet suspension bearing body 9 is electrically connected with a permanent magnet suspension bearing controller (not shown in the figure) in actual use, the permanent magnet suspension bearing body 9 is sleeved on the bearing-mounted rotor 1, the middle position of the bearing-mounted rotor 1 is provided with a permanent magnet motor (not shown in the figure) in use, and the permanent magnet motor is electrically connected with a frequency converter (not shown in the figure), the inner wall of the mounting seat 8 is fixedly connected with a plurality of protection springs 10 on both sides, the number of the protection springs 10 is eight, one end of the protection spring 10 is fixedly connected with a protection plate two 11, a plurality of fixed screws 12 are threadedly connected on the turbine shell one 202 and the turbine shell two 203, and the number of the fixed screws 12 is ten.

[0034] One end of the cooling pipe 204 penetrates the turbine shell one 202 and the turbine shell two 203 and is connected with a cooling box 205, the cooling pipe 204 penetrates the turbine shell one 202 and the turbine shell two 203 and is provided with a heat preservation cover (not shown in the figure) in actual use, the other end of the cooling pipe 204 penetrates the turbine shell one 202 and the turbine shell two 203 and is connected with a circulating pump 206, one end of the circulating pump 206 penetrates one side of the cooling box 205 through a connecting pipe, the inner wall of the cooling box 205 is fixedly connected with the auxiliary frame 401, both sides of the cooling box 205 penetrate semiconductor refrigeration pieces 207, the number of the semiconductor refrigeration pieces 207 is two, the semiconductor refrigeration pieces 207 are consistent with the principle of the TEC1-12706, so no detailed drawing and description are given, one side of the cooling box 205 is provided with an air inlet valve 208 for air inlet and exhaust pressure relief.

[0035] The protection assembly one 2 is provided with a protection assembly two 3, the protection assembly two 3 comprises a protection groove formed in the surface of the protection assembly one 2, the protection groove is formed in the surface of the turbine shell one 202 and the turbine shell two 203, the inner wall of the protection groove is fixedly connected with a plurality of spring-sleeved telescopic rods 301, the number of the spring-sleeved telescopic rods 301 is twelve, and one end of the spring-sleeved telescopic rod 301 is fixedly provided with a protection plate one 302.

[0036] In actual application, the protection assembly one 2 arranged on the bearing-mounted rotor 1 is convenient for assisting in cooling the permanent magnet suspension bearing body 9 of the turbine, the protection assembly two 3 arranged on the protection assembly one 2 can protect the surface of the permanent magnet suspension bearing of the turbine when the surface is collided, the mounting seat 8 and the permanent magnet suspension bearing body 9 arranged on the turbine shell one 202 and the turbine shell two 203 are convenient for limiting the installation of the permanent magnet suspension bearing body 9, the protection spring 10 and the protection plate two 11 arranged on the mounting seat 8 are convenient for assisting in buffering and protecting when the permanent magnet suspension bearing body 9 is displaced, and the fixed screw 12 arranged on the turbine shell one 202 and the turbine shell two 203 is convenient for maintaining the permanent magnet suspension bearing body 9.

[0037] Embodiment two;

[0038] As Figures 1-7 shown, according to the utility model embodiments applied to the permanent magnet suspension bearing of turbine, the inner wall of protective assembly two 3 is provided with auxiliary assembly 4, auxiliary assembly 4 includes the auxiliary frame 401 fixedly arranged in the inner wall of protective assembly two 3, a plurality of auxiliary grooves are set up on auxiliary frame 401, the number of auxiliary groove is two, and the inner wall of auxiliary groove is installed with filter screen 402 and activated carbon plate 403;

[0039] The side of filter screen 402 is installed with cleaning assembly 5, and cleaning assembly 5 includes multistage electric telescopic rod 501 installed on one side of cooling box 205, and the output end of multistage electric telescopic rod 501 is provided with cleaning brush 502, cleaning brush 502 is in contact with filter screen 402, one end of cleaning brush 502 is fixedly connected with chip removal plate 503, one side of cooling box 205 is provided with chip removal opening, the inner wall of chip removal opening is provided with mounting cavity, the inner wall of mounting cavity is fixedly installed with micro electric telescopic rod 504, and one end of micro electric telescopic rod 504 is fixedly installed with shielding plate 505;

[0040] Micro electric telescopic rod 504, multistage electric telescopic rod 501, semiconductor refrigeration piece 207, air inlet valve 208 and circulating pump 206 are electrically connected with controller in use, and controller, micro electric telescopic rod 504, multistage electric telescopic rod 501, semiconductor refrigeration piece 207, air inlet valve 208 and circulating pump 206 are electrically connected with external power supply.

[0041] The upper portion of cooling box 205 is provided with maintenance opening, the inner wall of maintenance opening is hinged with sealing cover 6, sealing cover 6 is fixedly connected with a plurality of lock catches 7 on one side of cooling box 205, and the number of lock catches 7 is four.

[0042] In actual application, by setting auxiliary assembly 4 on protective assembly two 3, the impurities in the cooling gas of the permanent magnet suspension bearing of turbine can be filtered, and by setting cleaning assembly 5 on filter screen 402, the impurities adhered to filter screen 402 can be cleaned and discharged, so that the cooling effect of the permanent magnet suspension bearing of turbine is reduced.

[0043] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail.

[0044] In summary, by means of the above technical scheme of the utility model, the bearing seat 201 arranged through the bearing installation rotor 1 cooperates with the turbine shell one 202, the turbine shell two 203 and the cooling pipe 204, so that the permanent magnetic suspension bearing body 9 arranged in the turbine shell one 202 and the turbine shell two 203 is conveniently assisted in cooling, the gas delivered by the cooling pipe 204 is filtered through the auxiliary frame 401, the filter screen 402 and the activated carbon plate 403 arranged in the cooling box 205, so that the impurities in the cooling gas of the permanent magnetic suspension bearing of the turbine are filtered, the impurities adhered to the filter screen 402 are conveniently cleaned and discharged through the cooperation between the multi-stage electric telescopic rod 501, the cleaning brush 502 and the chip pushing plate 503 arranged in the filter screen 402, the cooling effect of the permanent magnetic suspension bearing of the turbine is reduced, the surface of the permanent magnetic suspension bearing of the turbine is protected through the cooperation between the spring sleeved telescopic rod 301 and the protective plate one 302 arranged in the turbine shell one 202 and the turbine shell two 203, the permanent magnetic suspension bearing body 9 is conveniently installed in the limit through the cooperation between the mounting seat 8 and the permanent magnetic suspension bearing body 9 arranged in the turbine shell one 202 and the turbine shell two 203, the protective spring 10 and the protective plate two 11 arranged in the mounting seat 8 are convenient for assisting in buffering and protecting when the permanent magnetic suspension bearing body 9 is displaced, and the fixing screw 12 arranged in the turbine shell one 202 and the turbine shell two 203 is convenient for maintaining the permanent magnetic suspension bearing body 9.

[0045] The above merely describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A permanent-magnetic levitation bearing for application to a turbomachine, characterized in that, Including bearing installation rotor (1), one end of bearing installation rotor (1) is provided with guard assembly one (2), guard assembly one (2) is provided with guard assembly two (3), guard assembly two (3) includes the protection groove of guard assembly one (2) surface, the inner wall of the protection groove is fixedly connected with a plurality of spring sleeve telescopic rod (301), one end of spring sleeve telescopic rod (301) is fixed with guard plate one (302); The inner wall of the guard assembly two (3) is provided with an auxiliary assembly (4), the auxiliary assembly (4) includes an auxiliary frame (401) fixedly arranged on the inner wall of the guard assembly two (3), a plurality of auxiliary grooves are formed in the auxiliary frame (401), and a filter screen (402) and an activated carbon plate (403) are mounted on the inner wall of the auxiliary groove, one side of the filter screen (402) is provided with a cleaning assembly (5).

2. A permanent-magnetic levitated bearing for a turbomachine according to claim 1, characterized in that, The guard assembly one (2) includes a plurality of bearing seats (201) arranged on the bearing installation rotor (1), the bearing seat (201) is connected with turbine shell one (202) and turbine shell two (203), the turbine shell one (202) and the turbine shell two (203) are provided with a protection cavity, and the inner wall of the protection cavity is provided with a cooling pipe (204). One end of the cooling pipe (204) penetrates the turbine shell one (202) and the turbine shell two (203) and is connected with a cooling box (205), the other end of the cooling pipe (204) penetrates the turbine shell one (202) and the turbine shell two (203) and is connected with a circulating pump (206), one end of the circulating pump (206) penetrates one side of the cooling box (205) through a connecting pipe, the inner wall of the cooling box (205) is fixedly connected with the auxiliary frame (401), and semiconductor refrigeration sheets (207) penetrate the two sides of the cooling box (205), and one side of the cooling box (205) is provided with an air inlet valve (208).

3. A permanent-magnet active magnetic bearing for use in a turbomachine according to claim 2, characterized in that, The cleaning assembly (5) includes a plurality of multi-stage electric telescopic rods (501) mounted on one side of the cooling box (205), the output end of the multi-stage electric telescopic rod (501) is provided with a cleaning brush (502), the cleaning brush (502) is in contact with the filter screen (402), one end of the cleaning brush (502) is fixedly connected with a chip removing plate (503), one side of the cooling box (205) is provided with a chip outlet, the inner wall of the chip outlet is provided with a mounting cavity, the inner wall of the mounting cavity is fixedly mounted with a micro electric telescopic rod (504), and one end of the micro electric telescopic rod (504) is fixedly mounted with a shielding plate (505).

4. A permanent-magnet levitated bearing for a turbomachine according to claim 3, characterized in that, The upper side of the cooling box (205) is provided with a maintenance opening, the inner wall of the maintenance opening is hinged with a sealing cover (6), and a plurality of buckles (7) are fixedly connected to one side of the cooling box (205) and the sealing cover (6).

5. A permanent-magnetic levitated bearing for a turbomachine according to claim 2, characterized in that, The inner wall of the turbine shell one (202) and the turbine shell two (203) is fixedly provided with a plurality of mounting seats (8), the inner wall of the mounting seat (8) is mounted with a permanent magnet suspension bearing body (9), and the permanent magnet suspension bearing body (9) is sleeved on the bearing installation rotor (1).

6. A permanent-magnet active magnetic bearing for use in a turbomachine according to claim 5, characterized in that, The inner wall of the mounting seat (8) is fixedly connected with a plurality of protective springs (10), one end of the protective spring (10) is fixedly connected with a protective plate two (11).

7. A permanent-magnetic levitated bearing for a turbomachine according to claim 2, characterized in that, The turbine shell one (202) and the turbine shell two (203) are threadedly connected with a plurality of fixing screws (12).

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