Gap measuring device for magnetic suspension generator set

Abstract

The utility model discloses a gap measuring device for a magnetic suspension generator set, which comprises a base, two groups of rollers with a self-locking function are symmetrically arranged at the bottom of the base, and an axial slide rail and a positioning pin hole are arranged at the top of the base; the rear supporting seat is vertically fixed at the rear end of the base through a positioning pin and a bolt; the front supporting seat assembly is axially fixed through a bearing gland and a locking screw; one end of the axial adjusting device is connected with the hand wheel, and the end far away from the hand wheel drives the sliding seat to move along the axial sliding rail through a lead screw nut; the radial adjusting devices are symmetrically arranged on the two sides of the sliding seat, are arranged on the side face of the front supporting seat, fix the dial indicator in a magnetic attraction mode and are used for measuring the gaps A1, A2 and A3 between the rotor and the supporting seat. According to the utility model, the abrasion of the integral magnetic suspension bearing rotor caused by repeated disassembly and assembly due to clearance measurement can be reduced, and the risk of collision caused by manual hoisting of the rotor in the repeated disassembly and assembly process due to clearance adjustment of the integral magnetic suspension bearing rotor can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of magnetic bearing clearance measurement technology, and in particular to a clearance measurement device for magnetic levitation generator sets. Background Technology

[0002] ORC magnetic levitation centripetal turbine generator sets are special turbine devices that utilize organic working fluids as heat transfer and circulation media to generate electricity through the absorption and release of heat by the organic working fluids. Due to the relatively high cost of the working fluids, there can be no gas loss of the organic working fluids in the power generation system and during the circulation process.

[0003] To ensure the unit's sealing, the main equipment and magnetic bearing housing must be made as a single unit. Therefore, three clearance adjustment positions, A1, A2, and A3, are designed. This device measures and adjusts the clearances at positions A1, A2, and A3, ensuring the rotor is assembled according to the design values ​​during assembly to guarantee accurate axial positioning. However, measuring and adjusting the clearances A1, A2, and A3 typically requires repeated disassembly and reassembly of the single-unit rotor. This repeated disassembly and reassembly is not only labor-intensive but also causes wear on the rotor body. In severe cases, since rotor assembly requires hoisting, damage to the assembly surfaces during hoisting can render the entire rotor unusable. Utility Model Content

[0004] The purpose of this invention is to provide a gap measuring device for magnetic levitation generator sets, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A gap measuring device for a magnetic levitation generator set, comprising:

[0007] The base is integrally welded, with two sets of self-locking rollers symmetrically installed at the bottom, and axial slide rails and positioning pin holes at the top;

[0008] The rear support base is vertically fixed to the rear end of the base by locating pins and bolts, and is used to support the rear end of the rotor.

[0009] The front support assembly includes a front support, a rolling bearing, a bearing cap, and a locking screw. The rolling bearing is embedded in the front support and is axially fixed by the bearing cap and the locking screw.

[0010] The axial adjustment device includes a handwheel, a ball screw, and a sliding seat. The ball screw is parallel to the axial slide rail of the base, one end of which is connected to the handwheel, and the other end away from the handwheel drives the sliding seat to move along the axial slide rail through the screw nut.

[0011] A radial adjustment device, symmetrically arranged on both sides of the sliding seat, includes a front adjusting screw and a rear adjusting screw, used to finely adjust the radial position of the front support seat;

[0012] The magnetic gauge mount is located on the side of the front support base. The dial indicator is fixed by magnetic attraction and is used to measure the gaps A1, A2, and A3 between the rotor and the support base.

[0013] In some specific embodiments, the rear support base and the base are rigidly connected by locating pins and bolts;

[0014] The sliding seat of the axial adjustment device is slidably engaged with the axial slide rail of the base via a ball screw;

[0015] The front support assembly is fixed to the sliding seat by bolts, and the axis of the front support and the axis of the rear support are kept coaxial by a radial adjustment device;

[0016] The rollers are bolted to the bottom of the base and are fixed in position by a self-locking pedal.

[0017] In some specific embodiments, the front adjusting screw and the rear adjusting screw of the radial adjusting device are perpendicular to the axis of the sliding seat and have opposite thread directions, so that the radial fine adjustment of the front support seat can be achieved by synchronous rotation.

[0018] In some specific embodiments, an anti-reverse groove is provided between the ball screw and the slide block to limit the displacement of the slide block in the non-operating state.

[0019] In some specific embodiments, the contact surface between the front support and the sliding seat is a V-shaped guide rail structure, and linear guidance is achieved during radial adjustment through the guide rail slider.

[0020] In some specific embodiments, the magnetic gauge mount is equipped with a rotatable bracket for adjusting the measuring angle of the dial indicator, and is configured with a data recording module to store gap data in real time.

[0021] In some specific embodiments, the axial slide rail surface of the base is coated with a wear-resistant coating, and the coating material is tungsten carbide or ceramic composite material.

[0022] In some specific embodiments, the axial adjustment device further includes: a front bearing support and a rear bearing support;

[0023] The front bearing support is located at one end of the rotor of the magnetic levitation generator set near the handwheel and is connected to the axial slide rail of the base;

[0024] The rear bearing support is located at the end of the rotor furthest from the handwheel and is connected to the axial slide rail of the base.

[0025] In some specific embodiments, a support bearing is also provided at one end of the front support seat near the bearing cover.

[0026] The beneficial effects of this utility model are as follows: This utility model discloses a gap measuring device for a magnetic levitation generator set, comprising: a base, integrally welded, with two sets of self-locking rollers symmetrically installed at the bottom, and an axial slide rail and positioning pin hole at the top; a rear support seat, vertically fixed to the rear end of the base by positioning pins and bolts, for supporting the rear end of the rotor; a front support seat assembly, axially fixed by bearing caps and locking screws; an axial adjustment device, one end connected to a handwheel, the other end away from the handwheel driving a sliding seat to move along the axial slide rail via a screw nut; a radial adjustment device, symmetrically arranged on both sides of the sliding seat, including a front adjustment screw and a rear adjustment screw, for fine-tuning the radial position of the front support seat; and a magnetic gauge mounting position, located on the side of the front support seat, for fixing a dial indicator by magnetic attraction, for measuring the gaps A1, A2, and A3 between the rotor and the support seat. The beneficial effects of this utility model are as follows:

[0027] 1. It can reduce the wear on the rotor caused by repeated disassembly and reassembly of the integral magnetic levitation bearing rotor due to clearance measurement.

[0028] 2. It can reduce the risk of damage to the rotor during manual hoisting when the integral magnetic levitation bearing rotor is repeatedly disassembled and reassembled due to clearance adjustment.

[0029] 3. It can simplify the steps of manually adjusting the rotor of the integral magnetic levitation bearing and reduce the workload of personnel.

[0030] 4. This gap adjustment device has functions such as being movable and having self-locking rollers, avoiding the limitation of needing to be hoisted when moving.

[0031] 5. The device has high strength and can adapt to rotors with higher loads under static load. The front and rear support seats are connected to the base with screws, making disassembly convenient.

[0032] 6. The device is adjustable axially and radially, making it more adaptable than traditional rotor tooling. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the rotor structure of a magnetic levitation generator set gap measuring device according to this utility model;

[0034] Figure 2 This is a schematic diagram of the overall structure of the device of this utility model;

[0035] Figure 3 This is a schematic diagram of the structure of the rolling component of this utility model;

[0036] Figure 4 This is a schematic diagram of the axial adjustment device of this utility model;

[0037] Figure 5This is a schematic diagram of the radial adjustment device of this utility model;

[0038] Figure 6 This is a schematic diagram of the front bearing clamping device of this utility model;

[0039] Figure 7 This is a schematic diagram of the gaps A1, A2, and A3 of this utility model.

[0040] In the attached diagram: 1. Rear support seat; 2. Front support seat assembly; 3. Radial adjustment device; 4. Axial adjustment device; 5. Sliding seat; 6. Base; 7. Roller; 8. Handwheel; 9. Rear bearing seat; 10. Front bearing seat; 11. Ball screw; 12. Rear adjusting screw; 13. Front adjusting screw; 14. Bearing cover; 15. Support bearing; 16. Locking screw; 17. Front support seat; 201. Rotor; 202. Adjustment fixture; 203. Magnetic gauge mounting position. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0042] Reference Figures 1 to 7 The magnetic levitation generator set gap measuring device shown includes a base 6, which is integrally welded, with two sets of self-locking rollers 7 symmetrically installed at the bottom, and an axial slide rail and positioning pin hole at the top.

[0043] The rear support 1 is vertically fixed to the rear end of the base 6 by locating pins and bolts, and is used to support the rear end of the rotor 201.

[0044] The front support assembly 2 includes a front support 17, a rolling bearing, a bearing cover 14, and a locking screw 16. The rolling bearing is embedded in the front support 17 and is axially fixed by the bearing cover 14 and the locking screw 16.

[0045] The axial adjustment device 4 includes a handwheel 8, a ball screw 11 and a sliding seat. The ball screw 11 is parallel to the axial slide rail of the base 6. One end is connected to the handwheel 8, and the other end away from the handwheel 8 drives the sliding seat 5 to move along the axial slide rail through the screw nut.

[0046] The radial adjustment device 3 is symmetrically arranged on both sides of the sliding seat 5, including a front adjusting screw 13 and a rear adjusting screw 12, which are used to finely adjust the radial position of the front support seat 17.

[0047] The magnetic dial indicator mounting position 203 is located on the side of the front support 17, and the dial indicator is fixed by magnetic attraction. It is used to measure the gaps A1, A2, and A3 between the rotor 201 and the support. The magnetic dial indicator is fixed to the adjustment fixture 202 by magnetic force.

[0048] In some specific embodiments, the rear support 1 and the base 6 are rigidly connected by locating pins and bolts;

[0049] The sliding seat 5 of the axial adjustment device 4 is slidably engaged with the axial slide rail of the base 6 via the ball screw 11.

[0050] The front support assembly 2 is fixed to the sliding seat 5 by bolts, and the axis of the front support 17 and the axis of the rear support 1 are kept coaxial by the radial adjustment device 3;

[0051] The roller 7 is bolted to the bottom of the base 6 and is equipped with a self-locking pedal to fix its position.

[0052] In some specific embodiments, the front adjusting screw 13 and the rear adjusting screw 12 of the radial adjusting device 3 are perpendicular to the axis of the sliding seat 5 and have opposite thread directions, so that the radial fine adjustment of the front support seat 17 can be achieved by synchronous rotation.

[0053] In some specific embodiments, an anti-reverse groove is provided between the ball screw 11 and the slide seat 5 to limit the displacement of the slide seat 5 in the non-operating state.

[0054] In some specific embodiments, the contact surface between the front support 17 and the sliding seat 5 is a V-shaped guide rail structure, which achieves linear guidance during radial adjustment through the guide rail slider.

[0055] In some specific embodiments, the magnetic gauge mount 203 is provided with a rotatable bracket for adjusting the measuring angle of the dial gauge 20, and is configured with a data recording module to store gap data in real time.

[0056] In some specific embodiments, the axial slide rail surface of the base 6 is coated with a wear-resistant coating, and the coating material is tungsten carbide or ceramic composite material.

[0057] In some specific embodiments, the axial adjustment device 4 further includes a front bearing support 10 and a rear bearing support 9;

[0058] The front bearing support 10 is located at one end of the rotor 201 of the magnetic levitation generator set near the handwheel 8 and is connected to the axial slide rail of the base 6.

[0059] The rear bearing support 9 is located at the end of the rotor 201 furthest from the handwheel 8 and is connected to the axial slide rail of the base 6. It should be noted that both are vertically fixed to the axial slide rail of the base 6 by locating pins and bolts, ensuring coaxiality with the rotor axis. The bottoms of the front and rear bearing supports are positioned with the slide rail of the base 6 through locating pin holes and rigidly fixed by bolts to prevent displacement.

[0060] The front support seat 17 has an embedded rolling bearing, which is fixed by the bearing cover 14 and the locking screw 16, and cooperates with the V-shaped guide rail 501 of the sliding seat 5 to achieve radial fine adjustment.

[0061] The rear support 1 directly supports the rear end of the rotor and maintains non-contact support with the rotor through a magnetic levitation bearing or an auxiliary protection bearing.

[0062] In some specific embodiments, a support bearing 15 is also provided at one end of the front support base 17 near the bearing cover 14. It should be noted that the support bearing 15 is vertically fixed to the slide rail or frame of the base 6 by locating pins and bolts to ensure that it is coaxial with the rotor axis.

[0063] Support bearing 15 typically functions as an auxiliary protective bearing, used in conjunction with active magnetic levitation bearings (such as permanent magnet bias bearings) to provide temporary mechanical support in the event of magnetic levitation failure. During normal operation or in the event of a magnetic levitation system malfunction, support bearing 15 bears the rotor's weight through rigid contact, preventing the rotor from falling or colliding. It also provides stability assurance: working in conjunction with the magnetic levitation bearings, it reduces vibration and misalignment during high-speed rotation, improving system reliability.

[0064] The working principle of this utility model:

[0065] First, the gap measuring device is moved to a suitable spatial position using roller 7, and the entire device is fixed by roller self-locking. The tooling is radially adjusted using rear adjusting screw 12 and front adjusting screw 13 to make the rear support seat 1 and the radial adjustment device 3 coaxial. The span between the front support seat 17 and the rear support seat 1 is adjusted by turning handwheel 8. After adjusting to a suitable position, the rotor 201 is ready to be lowered. The rotor 201 is lifted to a suitable position and lowered into the device using a gantry crane, and locked with locking screw 16. The rotor 201 is adjusted on the rear support seat 1, and the magnetic gauge is installed at the magnetic gauge mounting position 203. The assembler pushes the rotor 201 horizontally and axially at the front end of the rotor to push the rotor to the extreme position (i.e., the end face of the thrust disk is in contact with the end face of the thrust magnetic bearing). Then the magnetic gauge is reset, and the rotor is pulled again so that the end face of the rotor thrust disk is in close contact with the end face of the thrust magnetic bearing on the other side. Record the dial indicator data; this data is the magnetic bearing clearance value A1. Repeat the same steps to measure the clearances A2 and A3 in sequence.

[0066] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0067] The beneficial effects of this utility model are as follows:

[0068] 1. It can reduce the wear on the rotor caused by repeated disassembly and reassembly of the integral magnetic levitation bearing rotor due to clearance measurement.

[0069] 2. It can reduce the risk of damage to the rotor during manual hoisting when the integral magnetic levitation bearing rotor is repeatedly disassembled and reassembled due to clearance adjustment.

[0070] 3. It can simplify the steps of manually adjusting the rotor of the integral magnetic levitation bearing and reduce the workload of personnel.

[0071] 4. This gap adjustment device has functions such as being movable and having self-locking rollers, avoiding the limitation of needing to be hoisted when moving.

[0072] 5. The device has high strength and can adapt to rotors with higher loads under static load. The front and rear support seats are connected to the base with screws, making disassembly convenient.

[0073] 6. The device is adjustable axially and radially, making it more adaptable than traditional rotor tooling.

[0074] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A gap measuring device for a magnetic levitation generator set, characterized in that, include: The base (6) is integrally welded and has two sets of self-locking rollers (7) symmetrically installed at the bottom, and an axial slide rail and positioning pin hole at the top. The rear support (1) is vertically fixed to the rear end of the base (6) by locating pins and bolts, and is used to support the rear end of the rotor (201); The front support assembly (2) includes a front support (17), a rolling bearing, a bearing cap (14) and a locking screw (16). The rolling bearing is embedded in the front support (17) and is axially fixed by the bearing cap (14) and the locking screw (16). The axial adjustment device (4) includes a handwheel (8), a ball screw (11) and a sliding seat (5). The ball screw (11) is parallel to the axial slide rail of the base (6), one end of which is connected to the handwheel (8), and the other end away from the handwheel (8) drives the sliding seat (5) to move along the axial slide rail through the screw nut. The radial adjustment device (3) is symmetrically arranged on both sides of the sliding seat (5), including a front adjusting screw (13) and a rear adjusting screw (12), which are used to finely adjust the radial position of the front support seat (17). The magnetic gauge mounting position (203) is located on the side of the front support (17) and the dial indicator is fixed by magnetic attraction. It is used to measure the gaps A1, A2 and A3 between the rotor (201) and the support.

2. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The rear support (1) and the base (6) are rigidly connected by positioning pins and bolts; The sliding seat (5) of the axial adjustment device (4) is slidably engaged with the axial slide rail of the base (6) via a ball screw (11); The front support assembly (2) is fixed to the sliding seat (5) by bolts, and the axis of the front support (17) and the axis of the rear support (1) are kept coaxial by the radial adjustment device (3); The roller (7) is bolted to the bottom of the base (6) and is equipped with a self-locking pedal to fix its position.

3. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The front adjusting screw (13) and the rear adjusting screw (12) of the radial adjusting device (3) are perpendicular to the axis of the sliding seat (5) and have opposite thread directions. The radial fine adjustment of the front support seat (17) is achieved by synchronous rotation.

4. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, An anti-reverse groove is provided between the ball screw (11) and the sliding seat (5) to limit the displacement of the sliding seat (5) in the non-operational state.

5. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The contact surface between the front support (17) and the sliding seat (5) is a V-shaped guide rail structure, which achieves linear guidance during radial adjustment through the guide rail slider.

6. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The magnetic gauge mount (203) is equipped with a rotatable bracket for adjusting the measuring angle of the dial indicator (20) and is configured with a data recording module to store gap data in real time.

7. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The axial slide rail surface of the base (6) is coated with a wear-resistant coating, and the coating material is tungsten carbide or ceramic composite material.

8. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The axial adjustment device (4) further includes: a front bearing support (10) and a rear bearing support (9); The front bearing support (10) is located at one end of the rotor (201) of the magnetic levitation generator set near the handwheel (8) and is connected to the axial slide rail of the base (6); The rear bearing support (9) is located at the end of the rotor (201) away from the handwheel (8) and is connected to the axial slide rail of the base (6).

9. The magnetic levitation generator set gap measuring device according to claim 1, characterized in that, The front support seat (17) is also provided with a support bearing (15) at one end near the bearing cover (14).

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