Liquid-cooled heat dissipation device for magnetic suspension bearing and power amplifier

Abstract

A liquid-cooled heat dissipation device for a magnetic suspension bearing comprises a first water segregator used for diverting a cooling medium and conveying the cooling medium to an excitation source cooling pipeline, a power supply module pipeline and a plurality of power amplification module cooling pipelines; the second water segregator is used for recovering the cooling medium from the excitation source cooling pipeline, the power supply module cooling pipeline and the power amplification module pipeline; the heat dissipation assembly is used for cooling the cooling medium recovered by the second water segregator; and the medium circulating mechanism comprises at least two circulating pump sets, the circulating pump sets are used for driving a cooling medium to circulate in the first water segregator, the second water segregator and the heat dissipation assembly, each circulating pump set comprises an electronic water pump and a one-way valve, and the conduction direction of the one-way valve is the direction from the heat dissipation assembly to the first water segregator. The utility model provides a liquid-cooled heat dissipation device for a magnetic suspension bearing and a power amplifier. The liquid-cooled heat dissipation device can cool and dissipate heat of multiple output loops of a power amplification module of the magnetic suspension bearing at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic suspension bearings, in particular to a liquid cooling heat dissipation device and a power amplifier for magnetic suspension bearings. Background Art

[0002] The magnetic levitation motor, short for magnetic bearing motor, differs significantly from conventional motors in that it utilizes magnetic bearings instead of the ball bearings or floating bearings used in conventional motors. During operation, the rotor and stator of the magnetic levitation motor do not slide relative to each other, thereby reducing power loss due to sliding friction and eliminating the need for lubrication and maintenance of the moving surfaces. The key to a magnetic levitation motor's stable and reliable operation lies in its ability to maintain stable levitation. Therefore, the key to maintaining stable levitation of the magnetic bearing is the generation of a stable and dynamically responsive Ampere force through the levitation current in the magnetic induction coil.

[0003] In the electronic control system of a magnetic bearing, the power amplifier generates the most heat and has the greatest impact on the suspension current. However, existing technologies for dissipating heat from the power amplifier components of magnetic bearings rely primarily on passive cooling, which has limited effectiveness. In high-temperature environments, this increased heat can easily lead to overall performance degradation. Utility Model Content

[0004] In order to address the deficiencies in the prior art, the utility model provides a liquid-cooled heat dissipation device and a power amplifier for a magnetic levitation bearing, which can simultaneously cool and dissipate heat for multiple output circuits of the power amplifier module of the magnetic levitation bearing, thereby fully ensuring the stability of the power amplifier module of the magnetic levitation bearing, and thus ensuring that the magnetic levitation bearing can operate stably.

[0005] In order to achieve the above-mentioned purpose, the specific solution adopted by the present invention is: a liquid-cooled heat dissipation device for a magnetic suspension bearing, comprising:

[0006] a first water distributor, for dividing the cooling medium and delivering it to the excitation source cooling pipeline, the power module pipeline, and the cooling pipelines of the multiple power amplifier modules;

[0007] A second water separator is used to recover cooling medium from the excitation source cooling pipeline, the power module cooling pipeline and the power amplifier module pipeline;

[0008] a heat dissipation component, used to cool the cooling medium recovered by the second water separator;

[0009] The medium circulation mechanism includes at least two circulation pump groups, which are used to drive the cooling medium to circulate in the first water distributor, the second water distributor and the heat dissipation component. The circulation pump group includes an electronic water pump and a one-way valve, and the conduction direction of the one-way valve is from the heat dissipation component to the first water distributor.

[0010] As a further optimization of the above-mentioned liquid-cooled heat dissipation device for magnetic suspension bearings: the circulation pump group further includes two ball valves, which are respectively connected to the water inlet and water outlet of the electronic water pump.

[0011] As a further optimization of the above-mentioned liquid-cooled heat dissipation device for magnetic suspension bearings: the medium circulation mechanism further includes a drain valve, which is connected to the water outlet ends of the one-way valves in all the circulation pump groups.

[0012] As a further optimization of the above-mentioned liquid-cooled heat sink for magnetic bearings: the power amplifier module cooling pipeline includes multiple output circuit cooling pipelines, and the output circuit cooling pipelines correspond to the output circuits of the power amplifier module.

[0013] Power amplifier, including:

[0014] A signal processing device for obtaining upper control signals and power amplifier status signals;

[0015] A control device, configured to generate an actual control signal according to the upper control signal and the power amplifier status signal;

[0016] at least two power amplification modules, configured to supply power to the magnetic bearing according to the actual control signal, the power amplification modules comprising a plurality of output circuits;

[0017] At least two heat dissipation devices, used to cool the power amplifier module;

[0018] The heat dissipation device is the above-mentioned liquid-cooled heat dissipation device for magnetic levitation bearings. The power amplifier module cooling pipeline includes multiple output circuit cooling pipelines and a redundant cooling pipeline. The output circuit cooling pipeline corresponds to the output circuit of the power amplifier module.

[0019] As a further optimization of the above-mentioned power amplifier: the power amplifier includes a shell consisting of a frame and a panel fixed on the frame, and a plurality of accommodating spaces are separated in sequence within the frame, and the signal processing device, the control device and the power amplification module are detachably arranged in the accommodating spaces one by one.

[0020] As a further optimization of the above-mentioned power amplifier: an upper drawer is detachably provided in the accommodating space for accommodating the signal processing device and the control device, the signal processing device and the control device are arranged in the upper drawer, and at least one push-pull handle is fixedly connected to the outer side of the upper drawer.

[0021] As a further optimization of the above power amplifier: at least one lower guide rail is fixedly provided in the accommodating space for accommodating the power amplification module, and the power amplification module is slidably connected to the lower guide rail.

[0022] As a further optimization of the above power amplifier: the heat dissipation device includes a water inlet and a water outlet, and the water inlet and the water outlet are both connected to the medium circulation mechanism.

[0023] As a further optimization of the above power amplifier: a plurality of hanging rings are fixedly provided on the housing, and the hanging rings are fixedly connected to the frame or the panel.

[0024] Beneficial effects: The utility model can simultaneously cool and dissipate heat for multiple output circuits of the power amplifier module of the magnetic levitation bearing, with higher heat dissipation efficiency and better effect, and can fully ensure the stability of the power amplifier module of the magnetic levitation bearing, thereby ensuring that the magnetic levitation bearing can operate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the heat dissipation device of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the power amplifier of the utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the power amplifier of the utility model;

[0028] Figure 4 It is a front view of the power amplifier of the utility model.

[0029] Description of the drawings: 1-housing, 2-hanging ring, 3-human-computer interaction module, 4-air filter, 5-heat dissipation device, 6-push-pull handle, 7-frame, 8-signal processing device, 9-control device, 10-upper drawer, 11-mounting rod, 12-lower guide rail, 13-power amplifier module, 14-water outlet, 15-water inlet, 16-output interface. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1 , a liquid-cooled heat dissipation device for a magnetic suspension bearing, comprising a first water separator, a second water separator, a heat dissipation component and a medium circulation mechanism.

[0032] The first water distributor is used to divide the cooling medium and transport it to the excitation source cooling pipeline, the power module pipeline and the cooling pipelines of multiple power amplifier modules.

[0033] The second water distributor is used to recover the cooling medium from the excitation source cooling pipeline, the power module cooling pipeline and the power amplifier module pipeline.

[0034] The heat dissipation component is used to cool the cooling medium recovered by the second water separator.

[0035] The medium circulation mechanism includes at least two circulation pump groups, which are used to drive the cooling medium to circulate in the first water distributor, the second water distributor and the heat dissipation component. The circulation pump group includes an electronic water pump and a one-way valve, and the conduction direction of the one-way valve is from the heat dissipation component to the first water distributor.

[0036] During use, the circulating pump group of the medium circulation mechanism drives the cooling medium to circulate through the first water distributor, the second water distributor, and the heat dissipation component. After passing through the first water distributor, the cooling medium flows to the excitation source cooling pipeline, the power module cooling pipeline, and the power amplifier cooling pipeline, respectively, thereby cooling the excitation source, the power module, and the power amplifier used to supply power to the magnetic bearing, reducing the temperature of each component, ensuring that a stable current can be supplied to the magnetic bearing, enabling the magnetic bearing to generate a stable magnetic field, and ensuring a stable operating state. In the circulating pump group, an electronic water pump is used to drive the flow of the cooling medium, and a one-way valve is used to control the flow direction of the cooling medium, so that the cooling medium can only flow along the first water distributor, each cooling pipeline, the second water distributor, and the heat dissipation component, thereby ensuring a heat dissipation effect. By providing at least two circulating pump groups, they can complement each other. When in use, only one circulating pump group is in operation. When a circulating pump group fails, it can be switched to another circulating pump group, achieving maintenance and repair of the failed circulating pump group without interrupting cooling.

[0037] To quickly switch the circulating pump unit, the unit also includes two ball valves, which are connected to the water inlet and outlet of the electronic water pump respectively. By opening and closing the ball valves, the circulating pump unit can be put into use or disconnected.

[0038] After a period of use, the cooling medium may become contaminated or its performance may degrade. In this case, the cooling medium must be replaced promptly. Therefore, the medium circulation mechanism also includes a drain valve, which is connected to the water outlet of the one-way valve in all circulating pump groups. When the drain valve is opened, the electronic water pump can discharge the cooling medium through the drain valve. After the waste cooling medium is discharged, new cooling medium can also be delivered to the heat sink through the drain valve.

[0039] Furthermore, the power amplifier module cooling pipeline includes a plurality of output circuit cooling pipelines, and the output circuit cooling pipelines correspond to the output circuits of the power amplifier module.

[0040] See also Figure 2-4 The present invention also provides a power amplifier for a magnetic bearing. The power amplifier includes a signal processing device 8, a control device 9, at least two power amplification modules 13 and at least two heat dissipation devices 5.

[0041] The signal processing device 8 is used to obtain the upper control signal and the power amplifier status signal. The upper control signal is a signal sent from the host computer to control the operation of the power amplifier. The power amplifier status signal is a signal collected from the output of the power amplifier to reflect the current operating status of the power amplifier.

[0042] The control device 9 is used to generate an actual control signal according to the upper control signal and the power amplifier status signal. The control device 9 generates an actual control signal according to the upper control signal and the power amplifier status signal, which can realize feedback control and ensure the control accuracy of the magnetic suspension bearing.

[0043] At least two power amplification modules 13 are used to supply power to the magnetic bearing according to the actual control signal. The power amplification module includes multiple output circuits.

[0044] At least two heat sinks 5 are used to cool the power amplifier module 13. The heat sink 5 is a liquid-cooled heat sink for magnetic bearings as described above. The power amplifier module cooling pipeline includes multiple output circuit cooling pipelines and a redundant cooling pipeline. The output circuit cooling pipeline corresponds to the output circuit of the power amplifier module 13. The heat sink 5 includes a water inlet 15 and a water outlet 14. Both the water inlet 15 and the water outlet 14 are connected to the medium circulation mechanism. The heat sink 5 dissipates heat for the power amplifier module 13 in a one-to-one correspondence. The number of power amplifier module cooling pipelines corresponds to the number of output circuits in the power amplifier module 13, and a redundant cooling pipeline is added as a backup to ensure that the heat of the output circuit in the power amplifier module 13 can be stably absorbed. In this embodiment, the power amplifier module 13 includes six output circuits, five of which are commonly used and one is a backup. An output interface 16 is provided for each output circuit. Accordingly, five output circuit cooling pipelines are also provided.

[0045] Furthermore, the power amplifier includes a housing 1 consisting of a frame 7 and a panel fixedly mounted on the frame 7. A plurality of storage spaces are sequentially partitioned within the frame 7, and the signal processing device 8, the control device 9, and the power amplifier module 13 are detachably mounted in the storage spaces. An upper drawer 10 is detachably mounted in the storage space for accommodating the signal processing device 8 and the control device 9. The signal processing device 8 and the control device 9 are mounted in the upper drawer 10, and at least one push-pull handle 6 is fixedly connected to the outer side of the upper drawer 10. At least one lower guide rail 12 is fixedly mounted in the storage space for accommodating the power amplifier module 13. A mounting rod 11 for mounting the guide rail 12 is provided in the storage space, and the power amplifier module 13 is slidably connected to the lower guide rail 12.

[0046] The signal processing device 8, the control device 9, and the power device consisting of the power amplifier module 13 and the heat sink 5 are all configured as detachable structures. They can be pre-assembled and then directly placed into the housing 1, forming a compact structure that takes up little space and is easy to assemble and transport. To further facilitate transportation, the housing 1 is fixed with multiple lifting rings 2, which are fixedly connected to the frame 7 or panel.

[0047] In order to facilitate operation, a human-machine interaction module 3 is further provided on the housing 1 . The human-machine interaction module 3 is connected to the control module 9 . The human-machine interaction module 3 may include a touch screen and buttons.

[0048] In addition to the power amplifier module 13 adopting the heat dissipation device 5 for heat dissipation, the signal processing device 8 and the control device 9 adopt an air-cooling heat dissipation method. Accordingly, air inlets and outlets are provided on the housing 1, and air filters 4 are provided in the air inlets and outlets.

[0049] Finally, it should be noted that the specific structural designs of the above-mentioned signal processing device 8, control device 9 and power amplification module 13 belong to the existing technology in this field and will not be described in detail here.

[0050] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid-cooled heat sink for a magnetic bearing, characterized in that: include: a first water distributor, for dividing the cooling medium and delivering it to the excitation source cooling pipeline, the power module pipeline, and the cooling pipelines of the multiple power amplifier modules; A second water separator is used to recover cooling medium from the excitation source cooling pipeline, the power module cooling pipeline and the power amplifier module pipeline; a heat dissipation component, used to cool the cooling medium recovered by the second water separator; The medium circulation mechanism includes at least two circulation pump groups, which are used to drive the cooling medium to circulate in the first water distributor, the second water distributor and the heat dissipation component. The circulation pump group includes an electronic water pump and a one-way valve, and the conduction direction of the one-way valve is from the heat dissipation component to the first water distributor.

2. A liquid-cooled heat sink for a magnetic bearing according to claim 1, characterized in that: The circulation pump group further includes two ball valves, which are respectively connected to the water inlet and outlet of the electronic water pump.

3. A liquid-cooled heat sink for a magnetic bearing according to claim 2, characterized in that: The medium circulation mechanism further includes a drain valve, which is communicated with the water outlet ends of the one-way valves in all the circulation pump groups.

4. The liquid-cooled heat dissipation device for a magnetic bearing according to claim 1, characterized in that: The power amplifier module cooling pipeline includes a plurality of output circuit cooling pipelines, and the output circuit cooling pipelines correspond to the output circuits of the power amplifier module.

5. Power amplifier, including: A signal processing device (8) for obtaining a higher-level control signal and a power amplifier status signal; A control device (9) for generating an actual control signal according to the upper control signal and the power amplifier status signal; At least two power amplification modules (13), used to supply power to the magnetic suspension bearing according to the actual control signal, the power amplification modules comprising a plurality of output circuits; At least two heat dissipation devices (5) for cooling the power amplification module (13); It is characterized in that the heat dissipation device (5) is a liquid-cooled heat dissipation device for a magnetic levitation bearing as described in any one of claims 1 to 4, and the power amplifier module cooling pipeline includes a plurality of output circuit cooling pipelines and a redundant cooling pipeline, and the output circuit cooling pipeline corresponds to the output circuit of the power amplifier module (13).

6. The power amplifier according to claim 5, wherein: The power amplifier comprises a housing (1) consisting of a frame (7) and a panel fixedly arranged on the frame (7); a plurality of accommodation spaces are sequentially separated in the frame (7); the signal processing device (8), the control device (9) and the power amplification module (13) are detachably arranged in the accommodation spaces in a one-to-one correspondence.

7. The power amplifier according to claim 6, wherein: An upper drawer (10) is detachably provided in the accommodation space for accommodating the signal processing device (8) and the control device (9); the signal processing device (8) and the control device (9) are arranged in the upper drawer (10); and at least one push-pull handle (6) is fixedly connected to the outer side of the upper drawer (10).

8. The power amplifier according to claim 6, wherein: At least one lower guide rail (12) is fixedly arranged in the accommodating space for accommodating the power amplifying module (13), and the power amplifying module (13) is slidably connected to the lower guide rail (12).

9. The power amplifier according to claim 5, wherein: The heat dissipation device (5) comprises a water inlet (15) and a water outlet (14), and both the water inlet (15) and the water outlet (14) are in communication with the medium circulation mechanism.

10. The power amplifier according to claim 6, wherein: A plurality of lifting rings (2) are fixedly provided on the housing (1), and the lifting rings (2) are fixedly connected to the frame (7) or the panel.

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