Superconducting magnet energy release module with temperature control cooling unit

Abstract

The utility model relates to the technical field of superconducting magnet systems, in particular to a superconducting magnet energy release module with a temperature control cooling unit. A superconducting magnet energy release module with a temperature control cooling unit is characterized in that the top of the cooling unit is connected with an energy release unit, the energy release unit comprises an energy release unit shell and diodes, and at least one pair of high-power diodes is arranged in the energy release unit shell; the cooling unit comprises a radiator, a fan and a driver, the bottom of the shell of the energy release unit is connected with the top of the radiator through a plurality of bolts, a plurality of cooling fins are arranged in the radiator, the fan is connected below the radiator, and the fan is driven by the driver; and a temperature control switch is arranged on the radiator. Compared with the prior art, the energy release module is composed of the energy release unit and the cooling unit, the cooling unit is an air cooling system, work and stop can be selected according to the temperature of the energy release unit, the working time of the cooling unit is greatly shortened, and the reliability of the energy release module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting magnet systems, in particular to a superconducting magnet energy dissipation module with a temperature control cooling unit. Background Art

[0002] With the development of science and technology, superconducting magnets are used more and more widely in the fields of medicine, industry, scientific research, etc. The use of superconducting magnets requires excitation and demagnetization processes. The so-called excitation process is the process of charging the inductance of the superconducting magnet coil through a power supply. The demagnetization process is to consume the energy in the magnet in the form of heat energy through an external energy dissipation module. Therefore, the excitation process requires at least a power supply, and the demagnetization process requires the cooperation of two components, the power supply and the energy dissipation module. For many devices, the power supply is connected when the magnet is excited, and the power supply will be removed after the excitation is completed. The power supply and the energy dissipation module are connected during demagnetization, and the power supply and the energy dissipation module are also removed after demagnetization, so that the power supply and the energy dissipation module do not need to work for a long time; there are also some devices that often adjust the magnetic field of the magnet during operation, so the superconducting magnet uses permanent current leads, and the power supply and the energy dissipation module are always connected to the permanent current leads and are in working condition, such as Figure 1 shown.

[0003] The energy dissipation module, whose energy dissipation unit is composed of power devices, generates a large amount of heat during operation, requiring cooling to maintain safe operation. Two common cooling methods are air cooling and water cooling. Water cooling systems offer high heat dissipation capacity and long-term operation, but they require a dedicated water cooling system, increasing system complexity and cost. Air cooling systems can also meet requirements to a certain extent and are inexpensive and easy to use, but long-term continuous operation will inevitably affect the lifespan of the fan and driver module. For this type of magnetic system, which requires frequent magnetic field adjustment, the power supply and energy dissipation module are constantly connected, and the energy dissipation module's cooling fan will be constantly running, which will inevitably reduce the fan's lifespan and affect the reliability of the energy dissipation module.

[0004] A heat dissipation module is needed, whose cooling fan works when the heat dissipation unit temperature is higher than a set value, and shuts down when the heat dissipation unit temperature drops below a certain set value. This can not only ensure the normal operation of the heat dissipation module, but also effectively control the working time of the cooling unit, extend the life of the cooling unit, and improve the reliability of the heat dissipation module. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a superconducting magnet energy dissipation module with a temperature-controlled cooling unit. The energy dissipation module consists of an energy dissipation unit and a cooling unit. The cooling unit is an air-cooled system that can be selected to work and stop according to the temperature of the energy dissipation unit, thereby greatly shortening the working time of the cooling unit, prolonging the life of the cooling unit, and improving the reliability of the energy dissipation module.

[0006] To achieve the above objectives, a superconducting magnet energy dissipation module with a temperature-controlled cooling unit is designed, comprising an energy dissipation unit and a cooling unit. The module is characterized in that: the top of the cooling unit is connected to the energy dissipation unit, the energy dissipation unit comprises an energy dissipation unit housing and a diode, and at least a pair of high-power diodes is provided in the energy dissipation unit housing; the cooling unit comprises a radiator, a fan, and a driver, the bottom of the energy dissipation unit housing is connected to the top of the radiator by a plurality of bolts, a plurality of heat sinks are provided in the radiator, a fan is connected to the bottom of the radiator, and the fan is driven by the driver; a temperature control switch is provided on the radiator.

[0007] The driver is provided with a driving circuit and a temperature control circuit. The temperature control switch is connected to the temperature control circuit via a lead. The temperature control circuit is connected to the power input end of the driving circuit. The driving circuit is connected to the fan via a lead.

[0008] The driving circuit is a standard power supply circuit, and the temperature control circuit is a standard temperature control circuit.

[0009] The temperature control switch is a normally open temperature control switch or a switch or circuit that is temperature-sensing and switch-controlled.

[0010] An insulating gasket is provided between the energy dissipation unit housing and the radiator, and the insulating gasket is made of a heat-conducting insulating material.

[0011] The diode is connected in series in the magnet circuit of the superconducting magnet.

[0012] Compared with the prior art, the utility model provides a superconducting magnet energy dissipation module with a temperature-controlled cooling unit. The energy dissipation module consists of an energy dissipation unit and a cooling unit. The cooling unit is an air-cooling system that can be selected to work and stop according to the temperature of the energy dissipation unit, which greatly shortens the working time of the cooling unit, increases the service life of the cooling unit, and improves the reliability of the energy dissipation module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the working circuit of a superconducting magnet.

[0014] Figure 2 This is a schematic diagram of the energy dissipation module.

[0015] Figure 3 This is a schematic structural diagram of the utility model.

[0016] Figure 4 This is a three-dimensional diagram of the structure of the utility model.

[0017] Figure 5 This is a connection diagram of the temperature control circuit and the drive circuit.

[0018] See also Figure 3 , Figure 4 , 1 is the energy dissipation unit housing, 2 is the heat sink, 3 is the fan, 4 is the driver, 5 is the diode, 6 is the radiator, 7 is the drive circuit, 8 is the temperature control circuit, 9 is the temperature control switch, and 10 is the insulating gasket. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, for many devices, the power supply is connected when the magnet is excited, and the power supply is removed after the excitation is completed. The power supply and energy dissipation module are connected during demagnetization, and the power supply and energy dissipation module are also removed after demagnetization. In this way, the power supply and energy dissipation module do not need to work for a long time; there are also some devices that often adjust the magnetic field of the magnet during operation, so the superconducting magnet uses permanent current leads, and the power supply and energy dissipation module are always connected to the permanent current leads and are in working state.

[0021] like Figure 2 As shown, the utility model designs an energy dissipation module with a temperature-controlled cooling unit. This energy dissipation module consists of an energy dissipation unit and a cooling unit. The cooling unit is an air-cooling system that can be selected to work and stop according to the temperature of the energy dissipation unit, which greatly shortens the working time of the cooling unit, increases the service life of the cooling unit, and improves the reliability of the energy dissipation module.

[0022] The core of the energy dissipation unit is the diode group. Each energy dissipation unit includes at least a pair of high-power diodes 5. In actual use, the number of diode groups can be adjusted according to the requirements of the magnet. When in use, the diode group is connected in series in the magnet circuit. When current flows through the diode group, it converts electrical energy into heat energy and dissipates it. The so-called demagnetization process begins by using the energy dissipation unit's diode group to dissipate the energy stored in the magnet coil to achieve energy dissipation.

[0023] The cooling unit consists of a heat sink 6, a driver 4, and a fan 3. The diode group is mounted and fixed on the heat sink 6, and has good thermal contact. The larger the heat sink area, the stronger the heat dissipation capacity. The fan 3 is mainly used to blow low-temperature cold air across the surface of the heat sink 6 at a certain air volume, removing the heat from the heat sink 6, reducing the temperature of the heat sink 6, and further reducing the temperature of the diode group, so that the entire energy dissipation module can operate safely and efficiently.

[0024] The driver 4 mainly provides power for the fan 3 and converts the input 220V AC power into the voltage and current required to drive the fan according to the temperature of the heat sink 6 (and the diode group) in a timely manner to control the operation of the fan.

[0025] Therefore, for the entire energy dissipation module, when current flows through the diode and the temperature rises, when it reaches the set temperature value, fan 3 starts working. When the current in the energy dissipation module stops or decreases and the temperature of the diode group drops to the set value, fan 3 stops working. This method ensures that the energy dissipation module can work online at any time, and the cooling unit will also start or stop working in time according to the working status of the energy dissipation unit, ensuring the reliability of the long-term safe operation of the energy dissipation module.

[0026] like Figure 3 , Figure 4 As shown, the top of the cooling unit is connected to the energy dissipation unit, which includes an energy dissipation unit housing and a diode. At least a pair of high-power diodes 5 are provided in the energy dissipation unit housing 1; the cooling unit includes a radiator, a fan, and a driver. The bottom of the energy dissipation unit housing 1 is connected to the top of the radiator 6 by a plurality of bolts. The radiator 6 is provided with a plurality of heat sinks 2. A fan 3 is connected below the radiator 6, and the fan 3 is driven by a driver 4; a temperature control switch 9 is provided on the radiator 6.

[0027] The driver 4 is provided with a driving circuit 7 and a temperature control circuit 8. The temperature control switch 9 is connected to the temperature control circuit 8 via a lead. The temperature control circuit 8 is connected to the power input end of the driving circuit 7. The driving circuit 7 is connected to the fan 3 via a lead.

[0028] The driving circuit 7 is a standard power supply circuit, and the temperature control circuit 8 is a standard temperature control circuit.

[0029] The temperature control switch 9 is a normally open temperature control switch or a switch or circuit that is temperature-sensing and switch-controlled.

[0030] An insulating gasket 10 is provided between the energy dissipation unit housing 1 and the radiator 6 , and the insulating gasket 10 is made of a thermally conductive insulating material.

[0031] The diode 5 is connected in series in the magnet circuit of the superconducting magnet.

[0032] The diode group (consisting of at least a pair of high-power diodes 5) is mounted on a heat sink 6, insulated and in good thermal contact. To achieve this, an insulating spacer 10 made of thermally conductive insulating material is often used. The heat energy generated by the diode group is first conducted to the heat sink 6. Since the connection between the heat sink 6 and the diode group is good enough, the two parts will have similar temperatures.

[0033] Fan 3 is primarily used to blow cool air at a predetermined volume through the heat sink 6 of the energy dissipation unit, removing heat from the heat sink 6 and providing a further heat dissipation path for the heat sink 6, thereby lowering the temperature of the heat sink 6. Since the diode group is connected to the heat sink 6, the temperature of the diode group is lowered, enabling the energy dissipation module to operate safely and efficiently.

[0034] Driver 4 consists of a drive circuit 7 and a temperature control circuit 8. Drive circuit 7 primarily provides power to fan 3, converting the incoming 220V AC power into the voltage and current required by fan 3. Temperature control circuit 8 utilizes a highly reliable, normally open temperature switch 9 as its core control element. This switch is mounted on the diode assembly (or heat sink 6) to accurately sense the temperature of the diode assembly (or heat sink 6). The leads of temperature switch 9 are connected in series to the power input of drive circuit 7. When the temperature of the diode assembly (or heat sink 6) reaches or exceeds a set value, temperature switch 9 turns on, powering drive circuit 8 and activating fan 3. When the temperature of diode assembly 5 (or heat sink 6) falls below the set value, temperature switch 9 turns off, powering drive circuit 4 and stopping fan 3.

[0035] like Figure 5 As shown, this is the connection circuit between the temperature control circuit 8 and the drive circuit 7. FR is a normally open temperature control switch 9. The drive circuit 7 is only an example and is a standard power supply circuit. Of course, the temperature control switch 9 can also be replaced by other temperature sensing and switch control circuits. The drive part can also be selected from various other fan drive circuits, as long as it can realize the temperature control drive power output function.

[0036] The energy dissipation module with a temperature-controlled cooling unit of the present invention can be connected to the superconducting magnet circuit for a long time and can start or stop the fan in time according to the working state of the superconducting magnet circuit, thereby eliminating the long-term continuous operation of the fan, extending the service life of the fan, thereby extending the service life of the energy dissipation module and increasing the reliability of the energy dissipation module.

Claims

1. A superconducting magnet energy dissipation module with a temperature-controlled cooling unit, comprising an energy dissipation unit and a cooling unit, characterized in that: The top of the cooling unit is connected to the energy dissipation unit, and the energy dissipation unit includes an energy dissipation unit housing and a diode. At least a pair of high-power diodes (5) are provided in the energy dissipation unit housing (1); the cooling unit includes a radiator, a fan, and a driver. The bottom of the energy dissipation unit housing (1) is connected to the top of the radiator (6) by a plurality of bolts. The radiator (6) is provided with a plurality of heat sinks (2). A fan (3) is connected below the radiator (6), and the fan (3) is driven by the driver (4); a temperature control switch (9) is provided on the radiator (6).

2. A superconducting magnet energy dissipation module with a temperature-controlled cooling unit according to claim 1, characterized in that: The driver (4) is provided with a driving circuit (7) and a temperature control circuit (8). The temperature control switch (9) is connected to the temperature control circuit (8) via a lead. The temperature control circuit (8) is connected to the power input end of the driving circuit (7). The driving circuit (7) is connected to the fan (3) via a lead.

3. A superconducting magnet energy dissipation module with a temperature-controlled cooling unit according to claim 2, characterized in that: The driving circuit (7) is a standard power supply circuit, and the temperature control circuit (8) is a standard temperature control circuit.

4. A superconducting magnet energy dissipation module with a temperature-controlled cooling unit according to claim 1 or 2, characterized in that: The temperature control switch (9) is a normally open temperature control switch or a switch or circuit that is temperature-sensing and switch-controlled.

5. The superconducting magnet energy dissipation module with a temperature-controlled cooling unit according to claim 1, characterized in that: An insulating gasket (10) is provided between the energy dissipation unit housing (1) and the radiator (6), and the insulating gasket (10) is made of a heat-conducting insulating material.

6. The superconducting magnet energy dissipation module with a temperature-controlled cooling unit according to claim 1, characterized in that: The diode (5) is connected in series in the magnet circuit of the superconducting magnet.

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