Magnetic driver with intelligent temperature control compensation

Abstract

The utility model discloses a magnetic actuator with intelligent temperature control compensation, which comprises an outer bearing seat, a rack and a bearing seat which are fixedly connected, a transmission shaft penetrates through the rack, and is characterized in that a cooling circulation part is arranged on the rack, a magnetic transmission part is arranged on the transmission shaft, and the outer bearing seat and the bearing seat are fixedly connected. The magnetic transmission part comprises a permanent magnet and an isolation sleeve wrapping a transmission shaft, a cooling channel is arranged between the isolation sleeve and the rack, the cooling circulation part comprises a medium inlet pipeline and a medium outlet pipeline which are installed on the two sides of the rack, and the medium inlet pipeline and the medium outlet pipeline are both communicated with the cooling channel. A flow regulating valve and a flow sensor are arranged on the medium inlet pipeline; a temperature sensor and a PLC (Programmable Logic Controller) are also arranged on one side of the rack; according to the utility model, the temperature of the magnetic driver can be controlled, and the cooling flow and temperature of equipment can be monitored and controlled at the same time.

Description

Technical Field

[0001] This utility model relates to the field of transmission technology, and more specifically to a magnetic transmission device with intelligent temperature control compensation. Background Technology

[0002] Magnetic drives are increasingly used in high-speed precision transmission, but the combined thermal effects at speeds exceeding 600 rpm have become a major bottleneck. Practical applications show that at 600 rpm, eddy current losses in the isolation sleeve can account for 15%-25% of the total input power, with local temperature rise rates exceeding 5℃ / s, and core area temperatures reaching 150-200℃ in a short time. This temperature rise directly leads to two major problems:

[0003] 1. Irreversible demagnetization of permanent magnets: The magnetic flux density of neodymium iron boron (N35UH, etc.) materials decreases at a coefficient of -0.12% / ℃ at 180℃, and irreversible demagnetization occurs above 200℃, resulting in a decrease in transmission torque;

[0004] 2. Material performance deterioration: Thermal mismatch between the stainless steel isolation sleeve and the permanent magnet can cause radial clearance deviation when the temperature difference exceeds 80°C, which can easily cause fluctuations in magnetic pull. In addition, the isolation sleeve is a pressure-bearing component, and excessively high temperatures can lead to a decline in its performance.

[0005] Currently, the cooling methods for magnetic drive devices are all passive. The flow rate of cooling water does not automatically adjust according to the heat generated during equipment operation. The current mainstream cooling solutions have significant drawbacks: heat dissipation lag, fixed flow cooling water systems cannot respond to sudden changes in rotational speed, and temperature control is delayed. The cooling system of the magnetic drive device is not adaptively correlated with temperature, resulting in insufficient heat dissipation efficiency and failure to respond in a timely manner. Therefore, this utility model proposes a magnetic drive device with intelligent temperature control compensation. Utility Model Content

[0006] The purpose of this invention is to provide a magnetic drive with intelligent temperature control compensation, which can control the temperature of the magnetic drive and monitor and control the cooling flow and temperature of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A magnetic drive with intelligent temperature control compensation includes a fixedly connected outer bearing housing, a frame, and a bearing housing. A drive shaft runs through the frame. The frame is characterized by a cooling circulation section, and the drive shaft is equipped with a magnetic drive section. The magnetic drive section includes a permanent magnet and an isolation sleeve encasing the drive shaft. A cooling channel is provided between the isolation sleeve and the frame. The cooling circulation section includes a medium inlet pipe and a medium outlet pipe installed on both sides of the frame. Both the medium inlet pipe and the medium outlet pipe communicate with the cooling channel. A flow regulating valve and a flow sensor are provided on the medium inlet pipe. A temperature sensor and a PLC controller are also provided on one side of the frame.

[0009] Furthermore, the cooling channel has a ring-shaped structure.

[0010] Furthermore, a connecting flange is provided at the top of the frame.

[0011] Furthermore, the permanent magnet consists of an inner magnetic rotor mounted on the drive shaft and an outer magnetic rotor mounted on the lower end of the connecting flange, with the inner magnetic rotor and the outer magnetic rotor being magnetically coupled.

[0012] Furthermore, the outer magnetic rotor and the inner magnetic rotor are separated by an isolation sleeve.

[0013] Furthermore, the PLC controller also includes an interlocking protection module.

[0014] The beneficial effects of this utility model are as follows: through the closed-loop temperature control system, the cooling flow and heat generation are matched in real time to avoid demagnetization and material deterioration caused by overheating; the forced cooling start protection mechanism ensures the safety of equipment operation; improves heat dissipation efficiency, reduces energy consumption, and extends the service life of the magnetic drive. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] Reference numerals in the attached diagram: 1. Outer bearing housing; 2. Outer magnetic rotor; 3. Inner magnetic rotor; 4. Bearing housing; 5. Drive shaft; 6. Cooling channel; 7. Flow sensor; 8. Medium inlet pipe; 9. Flow regulating valve; 10. Isolation sleeve; 11. Temperature sensor; 12. Connecting flange; 13. Frame; 14. Medium outlet pipe. Detailed Implementation

[0019] like Figures 1 to 2As shown in this specific embodiment, a magnetic drive with intelligent temperature control compensation includes a fixedly connected outer bearing seat 1, a frame 13, and a bearing seat 4. A drive shaft 5 passes through the frame 13. The frame 13 is characterized by having a cooling circulation section, and the drive shaft 5 is equipped with a magnetic drive section. The magnetic drive section includes a permanent magnet and an isolation sleeve 10 wrapped around the drive shaft 5. A cooling channel 6 is provided between the isolation sleeve 10 and the frame 13. The cooling circulation section includes a medium inlet pipe 8 and a medium outlet pipe 14 installed on both sides of the frame 13. Both the medium inlet pipe 8 and the medium outlet pipe 14 are connected to the cooling channel 6. A flow regulating valve 9 and a flow sensor 7 are provided on the medium inlet pipe 8. A temperature sensor 11 and a PLC controller are also provided on one side of the frame 13.

[0020] Furthermore, the cooling channel 6 has a ring-shaped structure.

[0021] Furthermore, a connecting flange 12 is provided at the top of the frame 13.

[0022] Furthermore, the permanent magnet consists of an inner magnetic rotor 3 mounted on the drive shaft 5 and an outer magnetic rotor 2 mounted on the lower end of the connecting flange 12, with the inner magnetic rotor 3 and the outer magnetic rotor 2 being magnetically coupled.

[0023] Furthermore, the outer magnetic rotor 2 and the inner magnetic rotor 3 are separated by an isolation sleeve 10.

[0024] Furthermore, the PLC controller also includes an interlocking protection module.

[0025] The beneficial effects of this utility model are as follows: through the closed-loop temperature control system, the cooling flow and heat generation are matched in real time to avoid demagnetization and material deterioration caused by overheating; the forced cooling start protection mechanism ensures the safety of equipment operation; improves heat dissipation efficiency, reduces energy consumption, and extends the service life of the magnetic drive.

[0026] Working Principle: This utility model achieves dynamic cooling regulation through closed-loop control. During use, before the flow detection and start-up interlock system is started, the flow sensor 7 detects the cooling water flow in real time. If the flow is zero (i.e., no cooling water flow), the PLC controller will lock the equipment start-up program to ensure that the magnetic drive cannot operate without cooling, thus avoiding instantaneous damage due to overheating. The temperature sensor 11 collects temperature data of the core area (such as the surface of the permanent magnet and the inner wall of the isolation sleeve 10) in real time and transmits it to the PLC controller through the signal line. After receiving the temperature signal, the PLC controller executes the following control strategy: when the detected temperature is higher than the threshold, the PLC output signal increases the opening of the flow regulating valve 9 → the cooling water flow increases → accelerating heat dissipation; when the temperature drops back below the threshold, the valve opening is gradually reduced → the cooling water flow is reduced → energy saving is achieved. If the temperature rise rate is abnormal or continues to exceed the threshold, the PLC triggers an alarm and executes shutdown protection to prevent the permanent magnet from demagnetizing and the isolation sleeve 10 from thermal deformation.

[0027] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A magnetic drive with intelligent temperature control compensation, comprising a fixedly connected outer bearing housing (1), a frame (13), and a bearing housing (4), wherein a drive shaft (5) passes through the frame (13), characterized in that, The frame (13) is provided with a cooling circulation section, and the drive shaft (5) is provided with a magnetic drive section. The magnetic drive section includes a permanent magnet and an isolation sleeve (10) wrapped around the drive shaft (5). A cooling channel (6) is provided between the isolation sleeve (10) and the frame (13). The cooling circulation section includes a medium inlet pipe (8) and a medium outlet pipe (14) installed on both sides of the frame (13). The medium inlet pipe (8) and the medium outlet pipe (14) are both connected to the cooling channel (6). A flow regulating valve (9) and a flow sensor (7) are provided on the medium inlet pipe (8). A temperature sensor (11) and a PLC controller are also provided on one side of the frame (13).

2. A magnetic drive with intelligent temperature control compensation according to claim 1, characterized in that, The cooling channel (6) has a ring-shaped structure.

3. A magnetic drive with intelligent temperature control compensation according to claim 1, characterized in that, The frame (13) is provided with a connecting flange (12) at the top.

4. A magnetic drive with intelligent temperature control compensation according to claim 3, characterized in that, The permanent magnet consists of an inner magnetic rotor (3) mounted on the drive shaft (5) and an outer magnetic rotor (2) mounted on the lower end of the connecting flange (12). The inner magnetic rotor (3) and the outer magnetic rotor (2) are magnetically coupled.

5. A magnetic drive with intelligent temperature control compensation according to claim 4, characterized in that, The outer magnetic rotor (2) and the inner magnetic rotor (3) are separated by an isolation sleeve (10).

6. A magnetic drive with intelligent temperature control compensation according to claim 1, characterized in that, The PLC controller also includes an interlocking protection module.

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