Liquid-cooled high-power resistor

Abstract

The invention relates to the technical field of resistors, and discloses a liquid-cooled high-power resistor, which comprises liquid cooling plates, power devices, liquid cooling plate inlets and liquid cooling plate outlets, the power devices are installed on the liquid cooling plates, a plurality of liquid cooling plates are connected into a whole through connecting assemblies in a series-parallel connection mode, and the connecting assemblies are made of materials meeting the resistance value of a power resistor; the liquid cooling plate inlet is formed in the liquid cooling plate; the liquid cooling plate outlets are formed in the liquid cooling plates, and cooling liquid enters from the liquid cooling plate inlets and then flows out from the liquid cooling plate outlets after passing through the multiple liquid cooling plates. The power device is installed on the liquid cooling plates, the multiple liquid cooling plates are made of metal materials, the resistance value requirement of the power resistor is met in a series-parallel connection mode, meanwhile, cooling liquid flows from the liquid cooling plate inlets to the liquid cooling plate outlets, and the temperature of the heating power device is controlled.

Description

Technical Field

[0001] The invention relates to the technical field of resistors, and in particular to a liquid-cooled high-power resistor. Background Art

[0002] Superconducting magnet power is a magnet power source that uses superconducting materials. Its principle is to make the material become a superconductor at low temperature, eliminate resistance, and enable effective storage and transmission of electrical energy. The application of superconducting materials can greatly improve the current density and magnetic field stability of the magnet, while reducing the energy consumption and failure rate of the magnet.

[0003] Compared with ordinary power supplies, superconducting magnet power supplies show excellent stability and durability in performance. Ordinary power supplies are easily affected by various factors such as circuit noise and thermal stability during operation, while superconducting magnet power supplies can operate stably for a long time without causing hazards such as electromagnetic interference and radiation. In addition, superconducting magnet power supplies are more widely used in the field of application. They are not only suitable for fields such as physical experiments and medical imaging, but also play an important role in reducing costs and improving efficiency.

[0004] The superconducting magnet power supply needs to absorb a lot of energy during demagnetization, and most of this energy is consumed in the form of heat conversion through high-power resistors. The heat generation power of power resistors is mostly above the kW level, and they are large in size and high in cost. It is difficult to increase the power density of the power supply and reduce the cost. In severe cases, it will damage the body and other electronic parts. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention provides a liquid-cooled high-power resistor.

[0006] In view of the problems in the prior art, the present invention provides a liquid-cooled high-power resistor, including a liquid cooling plate.

[0007] The power device is installed on a liquid cooling plate, the interior of the liquid cooling plate is hollow, and multiple liquid cooling plates are connected as a whole in series and parallel by connecting components, and the connecting components are made of materials that meet the resistance value of the power resistor.

[0008] The liquid cooling plate inlet is arranged on the liquid cooling plate, and a channel is arranged inside the connecting component, and the channel is connected to adjacent liquid cooling plates.

[0009] The liquid cooling plate outlet is arranged on the liquid cooling plate, and the cooling liquid enters from the liquid cooling plate inlet and flows out from the liquid cooling plate outlet after passing through a plurality of liquid cooling plates.

[0010] Preferably, the connecting component is made of metal material.

[0011] Preferably, the connecting assembly is symmetrically connected to the supporting portion, and the supporting portion is connected to the extending portion.

[0012] Preferably, an extension portion is fixed inside the liquid cooling plate, and the extension portion is located below the power device on the liquid cooling plate.

[0013] Preferably, the area of ​​the extended portion is larger than the area of ​​the bottom of the power device.

[0014] Preferably, a first fixing portion is provided on the extension portion away from the support portion, and a second fixing portion is provided on the extension portion close to the support portion, and the thickness of the first fixing portion gradually increases in a direction toward the second fixing portion.

[0015] Preferably, the connection assembly, the support portion and the extension portion are connected by an arc transition.

[0016] Preferably, the connecting assembly is provided with a plurality of grooves.

[0017] Beneficial effects of the present invention: A liquid-cooled high-power resistor of the present invention, the connecting component not only plays a role in heat dissipation, but also can reduce the overall volume, changing the traditional way of large resistors generating heat and consuming electrical energy, and can also play a role in connecting adjacent liquid-cooled plates, making the overall connection more stable. At the same time, the connecting component cooperates with the cooling liquid with high specific heat capacity, and the flow of the cooling liquid can quickly drive the heat on the extension part and the supporting part to the connecting component for dissipation, thereby ensuring the stability of the power device during operation and shortening the demagnetization time of the superconducting magnet power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the interior of the connection component in the present invention.

[0021] Figure 3 It is a schematic diagram of the connection between the extension part, the support part and the connection assembly in the present invention.

[0022] In the figure: 1. power device; 2. liquid cooling plate inlet; 3. liquid cooling plate outlet; 4. liquid cooling plate; 5. connecting component; 51. channel; 52. groove; 6. extension part; 7. support part. DETAILED DESCRIPTION

[0023] In order to make the technical methods, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Embodiment 1:

[0025] like Figure 1-Figure 3 As shown, in response to the problems in the prior art, the present invention provides a liquid-cooled high-power resistor, including a liquid cooling plate 4, a power device 1, a liquid cooling plate inlet 2 and a liquid cooling plate outlet 3, the power device 1 is installed on the liquid cooling plate 4, and multiple liquid cooling plates 4 are connected as a whole in a series-parallel manner using a connecting component 5, and the connecting component 5 is made of a material that meets the resistance value of the power resistor; the liquid cooling plate inlet 2 is arranged on the liquid cooling plate 4; the liquid cooling plate outlet 3 is arranged on the liquid cooling plate 4, and after the coolant enters from the liquid cooling plate inlet 2, it passes through multiple liquid cooling plates 4 and flows out from the liquid cooling plate outlet 3.

[0026] The power device 1 is installed on the liquid cooling plate 4, and multiple liquid cooling plates 4 are connected as a whole in a series-parallel manner by a connecting component 5, so that the connecting component 5 becomes a connector that meets the power resistance value. During use, the coolant enters the liquid cooling plate 4 from the liquid cooling plate inlet 2. Since the interior of each liquid cooling plate 4 is hollow, the coolant flows through multiple liquid cooling plates 4 and then flows out from the liquid cooling plate outlet 3, thereby taking away the heat generated by the power device 1 when working. The resistor is applied to a superconducting magnet power supply. When the superconducting magnet power supply is demagnetized, the connecting component 5 can be used as a heat dissipation component to consume the electrical energy when the superconducting magnet power supply is demagnetized.

[0027] Embodiment 2:

[0028] The difference between this embodiment and the first embodiment is that the coolant is a coolant with specific heat capacity. By adapting a coolant with a corresponding specific heat capacity (specific heat capacity coolant is a prior art and is not limited here), the heat generated by the power device 1 is consumed to achieve rapid cooling temperature control. The coolant selected in this application is an ethylene glycol aqueous solution or an electronic fluoride liquid, because the ethylene glycol aqueous solution has a lower freezing point and a higher boiling point, and a higher thermal conductivity, and the electronic fluoride liquid has excellent electrical insulation, thermal conductivity, strong chemical inertness, non-flammability, and good fluidity. Both coolants can well take away the heat generated by the power device 1 when it is working. The present application adopts a coolant for heat dissipation. Compared with the traditional heat dissipation method, since the specific heat capacity of the coolant is much greater than that of the air, the cooling efficiency of liquid cooling is 1000 to 3000 times higher than that of air cooling, and the environmental requirements are lower.

[0029] Furthermore, the connecting component 5 is made of metal material. It should be noted that the metal material can be copper, aluminum, etc. The connection and fixation between the liquid cooling plates 4 are achieved through the connecting component 5. Since the thermal conductivity of metal is good and the hardness of metal is stronger, when the superconducting magnet power supply is demagnetized, the use of metal material as the connecting component 5 can consume the electric energy generated during the demagnetization of the superconducting magnet power supply in the form of heat.

[0030] It should be noted that the superconducting magnet power supply needs to absorb a lot of energy during demagnetization, and most of this energy is consumed in the form of heat conversion through high-power resistors. The heat generation power of the power resistors is mostly above the kW level, and they are large in size and high in cost, making it difficult to increase the power density of the power supply and reduce costs. The present application adopts a setting method of multiple separate liquid cooling plates 4, which can quickly transfer the heat generated by the power device 1 on each liquid cooling plate 4 to the connecting component 5 between the liquid cooling plates 4. The heat dissipation of the connecting component 5 can ensure the normal operation of the power device 1, ensure that the power device 1 can quickly consume electrical energy, and reduce the time of demagnetization of the superconducting magnet power supply.

[0031] Embodiment three:

[0032] The difference between this embodiment and the first embodiment is that the connecting component 5 is symmetrically connected to the supporting portion 7, and the supporting portion 7 is connected to the extending portion 6. The arrangement of the supporting portion 7 and the extending portion 6 can make the connection between the liquid cooling plates 4 more stable. On the one hand, the connecting component 5 connects multiple liquid cooling plates 4 as a whole, making the whole more stable during use, and the coolant inside the liquid cooling plate 4 flows more smoothly. At the same time, when the demagnetization of the superconducting magnet power supply requires electrical energy, the heat generated by the connecting component 5 can remove the heat generated by the power device 1 during operation, thereby ensuring the normal operation of the power device 1.

[0033] Furthermore, the interior of the liquid cooling plate 4 is hollow, and an extension portion 6 is fixed inside the liquid cooling plate 4 , and the extension portion 6 is located below the power device 1 on the liquid cooling plate 4 .

[0034] The area of ​​the extension portion 6 is larger than the area of ​​the bottom of the power device 1 , which is beneficial to the rapid heat dissipation of the power device 1 and shortens the heat dissipation time of the power device 1 . Meanwhile, the larger area can play a good connection role and make the connection between the liquid cooling plates 4 more stable.

[0035] Embodiment 4:

[0036] The difference between this embodiment and the first embodiment lies in that a first fixing portion is provided on the extension portion 6 away from the support portion 7, a second fixing portion is provided on the extension portion 6 close to the support portion 7, and the thickness of the first fixing portion gradually increases in the direction toward the second fixing portion; a channel 51 is provided inside the connecting component 5, and the channel 51 is connected to the adjacent liquid cooling plate 4.

[0037] Furthermore, the connection assembly 5, the support portion 7 and the extension portion 6 are connected by an arc transition.

[0038] It should be noted that the coolant in this embodiment flows quickly from one liquid cooling plate 4 to the next liquid cooling plate 4, and in the process of flowing, the heat on the extension part 6 and the support part 7 can be quickly brought to the connecting component 5, and the connecting component 5 is provided with a plurality of grooves 52, which can make the coolant stay in the grooves 52 for a long time, and the heat is dissipated through the connecting component 5, which can ensure that the power device 1 consumes electric energy quickly, avoids the use of high-power resistors, and reduces the volume of the entire resistor.

[0039] It should be noted that the liquid cooling plate 4 of the present application is arranged in blocks, and can be arranged in corresponding positions according to actual needs to make the overall structure more compact.

[0040] The specific working principle of the present invention is as follows: first, a cooling liquid with comparable heat capacity is selected to enter the liquid cooling plate 4 through the liquid cooling plate inlet 2, and multiple liquid cooling plates 4 are connected as a whole through a connecting component 5. A supporting part 7 is symmetrically arranged on the connecting component 5, and an extension part 6 is connected to the supporting part 7. The connection between the liquid cooling plates 4 can be more stable through the arrangement of the supporting part 7 and the extension part 6. At the same time, when the superconducting magnet power supply needs to consume a large amount of electric energy during demagnetization, the connecting component 5 can provide to ensure the normal operation of the power device 1, ensure that the power device 1 can quickly consume the electric energy, and the power device 1 can work normally. The heat generated in the process is taken away by the coolant, which enters through the liquid cooling plate inlet 2 and flows out from the liquid cooling plate outlet 3. During the flow of the coolant, since the coolant is a coolant with specific heat capacity, the heat of the power device 1 is dissipated through the connecting component 5 between the adjacent liquid cooling plates 4 under the flow of the coolant, thereby avoiding the use of traditional large-volume power resistors. Furthermore, the cooperation between the connecting component 5 and the coolant with specific heat capacity can quickly bring the heat on the extension part 6 and the support part 7 to the connecting component 5 for dissipation, thereby shortening the duration of power consumption of the superconducting magnet power supply during demagnetization.

[0041] The superconducting magnet power supply needs to absorb a lot of energy when demagnetizing, and most of this energy is consumed by heat conversion through high-power resistors. The present application avoids the use of power resistors above kW level, and utilizes the liquid cooling plate 4 heat dissipation device of the power supply itself (the function of the liquid cooling plate 4: the power device 1 is installed on the base surface of the liquid cooling plate 4, and the heat generated by the power device 1 is converted into thermal energy by adapting the cooling liquid with corresponding specific heat capacity to achieve rapid cooling temperature control) to provide energy for the superconducting magnet power supply during demagnetization. After a whole piece of liquid cooling plate 4 is reasonably cut, the resistance value between two fixed points of the liquid cooling plate 4 reaches the resistance value required by the power resistor, which is used to replace the power resistor, so as to achieve the purpose of improving the power density of the power supply and reducing the cost of the power supply.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection claimed by the present invention.

Claims

1. A liquid-cooled high-power resistor, characterized in that: including a liquid cooling plate (4); A power device (1), wherein the power device (1) is mounted on a liquid cooling plate (4), the liquid cooling plate (4) is hollow inside, and a plurality of liquid cooling plates (4) are connected as a whole in a series-parallel manner by a connecting assembly (5), and the connecting assembly (5) is made of a material that satisfies the power resistance value, and a channel (51) is provided inside the connecting assembly (5), and the channel (51) is connected to adjacent liquid cooling plates (4); A liquid cooling plate inlet (2), wherein the liquid cooling plate inlet (2) is arranged on the liquid cooling plate (4); A liquid cooling plate outlet (3), wherein the liquid cooling plate outlet (3) is arranged on the liquid cooling plate (4), and after the cooling liquid enters from the liquid cooling plate inlet (2), it passes through a plurality of liquid cooling plates (4) and flows out from the liquid cooling plate outlet (3).

2. A liquid-cooled high-power resistor according to claim 1, characterized in that: The connecting component (5) is made of metal material.

3. A liquid-cooled high-power resistor according to claim 2, characterized in that: The connection assembly (5) is symmetrically connected to a support portion (7), and the support portion (7) is connected to an extension portion (6).

4. A liquid-cooled high-power resistor according to claim 3, characterized in that: An extension portion (6) is fixed inside the liquid cooling plate (4), and the extension portion (6) is located below the power device (1) on the liquid cooling plate (4).

5. A liquid-cooled high-power resistor according to claim 4, characterized in that: The area of ​​the extended portion (6) is larger than the area of ​​the bottom of the power device (1).

6. A liquid-cooled high-power resistor according to claim 5, characterized in that: A first fixing portion is provided on the extension portion (6) away from the support portion (7), and a second fixing portion is provided on the extension portion (6) close to the support portion (7), and the thickness of the first fixing portion gradually increases in a direction toward the second fixing portion.

7. A liquid-cooled high-power resistor according to claim 6, characterized in that: The connection assembly (5), the support portion (7) and the extension portion (6) are connected in a circular arc transition.

8. The liquid-cooled high-power resistor according to claim 7, characterized in that: The connection assembly (5) is provided with a plurality of grooves (52).

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