Water-cooled load resistor module

Abstract

The present application relates to the technical field of resistor, in particular to a water-cooled load resistor module, comprising a plurality of water guide plates arranged in layers and locked with each other, which are made of metal material, a first sealing ring is arranged between two adjacent water guide plates near the side part, so as to separate the two adjacent water guide plates and enclose a plurality of layers of cavities, the plurality of layers of cavities are staggered in sequence as resistor cavities and water flow cavities, and each resistor cavity is provided with a resistor unit; each water guide plate is provided with water inlet and outlet holes, and a second sealing ring is arranged at the corresponding water inlet and outlet hole of the resistor cavity, so as to separate the resistor cavity from the water inlet and outlet hole and make the plurality of layers of water flow cavities communicate; each water guide plate is also provided with a wiring hole, and a third sealing ring is arranged at the corresponding water inlet and outlet hole of the water flow cavity, so as to separate the water flow cavity from the wiring hole and leave a wiring channel for the plurality of layers of resistor cavities. The contact area is large, the heat dissipation performance is good, the power of a single resistor unit can be larger, the overall resistor power can also be larger, and the adjustment is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of resistors, in particular to a water-cooled load resistor module. BACKGROUND

[0002] With the development of power electronics, the integration of equipment is increasingly required. For load equipment, the power density is increasingly required to be larger and the volume is increasingly required to be smaller. The water-cooled load can well solve this problem. The water-cooled load uses water as a cooling medium, has a fast cooling speed, a good heat dissipation performance, and a power density far greater than that of air-cooled load. Therefore, the water-cooled load is increasingly widely applied.

[0003] However, the existing water-cooled resistor generally has a groove on the side of a resistor sheet, and a coil pipe is additionally embedded in the groove. Heat is taken away through the side wall of the coil pipe and the resistor. The overall volume of the resistor is large. Once the groove for embedding the coil pipe is opened, the resistor is basically shaped and it is difficult to increase the power of the resistor. The flexibility is poor. Some metal pipe resistors have resistor wires wound on a porcelain pipe. Cooling water flows in the porcelain pipe to take away heat. The number of the resistor wires that can be wound is small, the power is low, and it is difficult to achieve high density. SUMMARY

[0004] In view of the above technical problems in the prior art, the present application provides a water-cooled load resistor module.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0006] The water-cooled load resistor module comprises a plurality of water guide plates made of metal and arranged in layers and locked to each other. First sealing rings are arranged at positions close to the side of each two adjacent water guide plates, so as to separate the two adjacent water guide plates and enclose a plurality of layers of cavities. The plurality of layers of cavities are staggered in sequence as resistor cavities and water flow cavities. Each resistor cavity is provided with a resistor unit. Each resistor unit comprises a resistor core and an insulating heat conducting plate clamping the resistor core from top to bottom. The insulating heat conducting plate is tightly attached to the side wall of the corresponding water guide plate. Each water guide plate is provided with water inlet and outlet holes. Second sealing rings are arranged at the corresponding water inlet and outlet holes of the resistor cavities, so as to separate the resistor cavities from the water inlet and outlet holes and make the plurality of layers of water flow cavities communicate with each other. Each water guide plate is also provided with a wiring hole. Third sealing rings are arranged at the corresponding water inlet and outlet holes of the water flow cavities, so as to separate the water flow cavities from the wiring holes and leave wiring channels for the plurality of layers of resistor cavities.

[0007] Specifically, the water guide plate is an aluminum plate.

[0008] Specifically, the resistor core comprises an insulating support plate and a resistor wire wound on the outer side of the support plate.

[0009] Specifically, the support plate and the insulating heat conducting plate are both mica plates.

[0010] Specifically, the wiring holes of each water guide plate are arranged in alignment with each other.

[0011] Specifically, the water inlet and outlet holes include liquid inlet holes and liquid outlet holes, the liquid inlet holes of each water guide plate are arranged in alignment with each other, and the liquid outlet holes of each water guide plate are arranged in alignment with each other.

[0012] Specifically, the liquid inlet hole and the liquid outlet hole of the most side water guide plate are respectively provided with a connecting pipe and a sealing head.

[0013] Specifically, the liquid inlet hole and the liquid outlet hole are arranged at opposite side portions of the water guide plate.

[0014] Specifically, the plurality of water guide plates are provided with a screw rod, and the end portion of the screw rod is provided with a nut, so as to stack and lock the plurality of water guide plates.

[0015] Specifically, the number of screw rods is multiple, and the multiple screw rods are distributed around the circumferential side of the water guide plate.

[0016] The beneficial effects of the present application are:

[0017] The water-cooled load resistance module of the present application adopts a structure of sheet-shaped water guide plates, one layer of resistance cavities and one layer of water flow cavities, the resistance units are in contact with the side walls of the water guide plates of the water flow cavities, the contact area is large, the heat dissipation performance is good, the power of a single resistance unit can be larger, and the overall resistance power can also be larger; due to the sheet-shaped laminated structure, the number of water guide plates and resistance units can be increased or decreased according to needs, so as to achieve the required module power and resistance value, and the adjustment is convenient, only the number of water guide plates needs to be adjusted; the resistance module has good integrity, the resistance units are sealed, can adapt to a relatively harsh environment, and the resistance outgoing line enters and exits from the wiring hole, and the installation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of a water-cooled load resistance module in the embodiment.

[0019] Figure 2 It is a sectional view of a water-cooled load resistance module in the embodiment.

[0020] Figure 3 It is Figure 2 It is an enlarged view of A in the figure.

[0021] Figure 4 It is an exploded view of a resistance unit in the embodiment.

[0022] Figure 5 It is a structure schematic view of a water guide plate in the embodiment.

[0023] REFERENCE NUMERALS:

[0024] Water guide plate 1, screw rod 2, nut 3;

[0025] First sealing ring 4, resistance cavity 5, water flow cavity 6;

[0026] Resistance unit 7, resistance core 71, support plate 711, resistance wire 712, insulating heat conducting plate 72;

[0027] Second sealing ring 8, liquid inlet hole 9, liquid outlet hole 10;

[0028] Connecting pipe 11, sealing head 12, wiring hole 13, and third sealing ring 14. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to specific embodiments and accompanying drawings.

[0030] A water-cooled load resistor module of this embodiment, such as Figures 1 to 5 As shown, the system comprises multiple stacked metal water deflectors 1, each made of aluminum or other metal. Multiple screws 2 are threaded through the water deflectors 1 and distributed around the circumference of the water deflectors 1. Nuts 3 are attached to the ends of the screws 2 to secure the stacked water deflectors 1.

[0031] A first sealing ring 4 is provided near the side of two adjacent water guide plates 1 (the water guide plates 1 are square, and the corresponding first sealing ring 4 is also a square ring). This separates the two adjacent water guide plates 1 and encloses a multi-layer cavity. The multi-layer cavity is alternately used as a resistor cavity 5 and a water flow cavity 6. For example, the first layer is the water flow cavity 6, the second layer is the resistor cavity 5, the third layer is the water flow cavity 6, and so on. Each resistor cavity 5 is provided with a resistor unit 7. Each resistor unit 7 includes a resistor core 71 and an insulating heat conductive plate 72 that clamps the resistor core 71 above and below. The insulating heat conductive plate 72 is tightly attached to the side wall of the corresponding water guide plate 1. The resistor core 71 includes an insulating support plate 711 and a resistance wire 712 wound around the outside of the support plate 711. The support plate 711 and the insulating heat conductive plate 72 are both mica plates, but in practice they can be replaced with insulating plates of other materials.

[0032] In this embodiment, each water guide plate 1 has two water inlet and outlet holes. A second annular sealing ring 8 is provided at the corresponding water inlet and outlet holes of the resistor cavity 5, thereby isolating the resistor cavity 5 from the water inlet and outlet holes and allowing the multi-layer water flow cavity 6 to communicate. The water inlet and outlet holes include a liquid inlet hole 9 and a liquid outlet hole 10. The liquid inlet holes 9 of each water guide plate 1 are aligned with each other, and the liquid outlet holes 10 of each water guide plate 1 are aligned with each other. The liquid inlet holes 9 and the liquid outlet holes 10 are respectively arranged on the diagonal sides of the water guide plate 1. The liquid inlet hole 9 and the liquid outlet hole 10 of the outermost water guide plate 1 are respectively provided with a pipe 11 and a head 12. During use, cooling water is introduced through the pipe 11 of the liquid inlet hole 9. The cooling water enters the water flow cavity 6 of each layer but cannot enter the resistor cavity 5. After heat exchange, it flows out through the liquid outlet hole 10.

[0033] In the embodiment, each water guide plate 1 is further provided with two wire holes 13, the wire holes 13 of each water guide plate 1 are arranged in alignment with each other, and the water flow cavity 6 is provided with a third annular sealing ring 14 at the corresponding inlet and outlet wire holes 13, so as to separate the water flow cavity 6 from the wire holes 13 and leave a wire connection passage for the multi-layer resistance cavity 5, thereby facilitating the series or parallel connection of each layer of resistance units 7 through a cable.

[0034] In actual manufacturing of the above resistance, the following steps are included:

[0035] 1. winding the resistance wire 712 on a mica plate, the mica plate fixing the resistance wire 712, and using mica plates for insulation above and below to form the resistance unit 7;

[0036] 2. opening a rubber ring groove and water inlet and outlet holes on the water guide plate 1 (aluminum plate or other metal plate) to manufacture the water guide plate 1;

[0037] 3. stacking each water guide plate 1, separating and sealing the middle with a rubber ring, one layer of cooling water, one layer of resistance, sealing the water outlet with a rubber ring, and separating the cooling water layer from the resistance layer through the cross rubber ring sealing;

[0038] 4. finally, fixing the water guide plate 1 around with a screw 2 to form a water-cooled resistance module.

[0039] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0041] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0042] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A water-cooled load resistor module characterized by: The application relates to a water guide plate comprising a plurality of metal water guide plates arranged in a stack and locked with each other, a first sealing ring arranged between two adjacent water guide plates at a position close to the side of the water guide plates, so as to separate the two adjacent water guide plates and form a plurality of layers of cavities, the plurality of layers of cavities are staggered as resistance cavities and water flow cavities in sequence, each resistance cavity is provided with a resistance unit, each resistance unit comprises a resistance core and an insulating and heat-conducting plate clamping the resistance core, and the insulating and heat-conducting plate is tightly attached to the side wall of the corresponding water guide plate; each water guide plate is provided with water inlet and outlet holes, a second sealing ring is arranged at the corresponding water inlet and outlet hole of the resistance cavity, so as to separate the resistance cavity from the water inlet and outlet holes and make the plurality of layers of water flow cavities communicate with each other; each water guide plate is also provided with a wiring hole, and a third sealing ring is arranged at the corresponding water inlet and outlet hole of the water flow cavity, so as to separate the water flow cavity from the wiring hole and leave a wiring channel for the plurality of layers of resistance cavities.

2. A water-cooled load resistor module according to claim 1, characterized in that: The water guide plate is an aluminum plate.

3. A water-cooled load resistor module according to claim 1, characterized in that: The resistance core comprises an insulating support plate and a resistance wire wound outside the support plate.

4. A water-cooled load resistor module according to claim 3, characterized in that: The support plate and the insulating and heat-conducting plate are both mica plates.

5. A water-cooled load resistor module according to claim 1, characterized in that: The wiring holes of the water guide plates are arranged in alignment with each other.

6. A water-cooled load resistor module according to claim 1, characterized in that: The water inlet and outlet holes comprise liquid inlet holes and liquid outlet holes, the liquid inlet holes of the water guide plates are arranged in alignment with each other, and the liquid outlet holes of the water guide plates are arranged in alignment with each other.

7. A water-cooled load resistor module according to claim 6, characterized in that: The liquid inlet hole and the liquid outlet hole of the water guide plate at the most side position are respectively provided with a connecting pipe and a sealing head.

8. A water-cooled load resistor module according to claim 6, characterized in that: The liquid inlet hole and the liquid outlet hole are arranged at opposite side positions of the water guide plate.

9. A water-cooled load resistor module according to claim 1, characterized by: A plurality of screws are arranged through the water guide plates, and the end of each screw is provided with a nut, so as to stack and lock the plurality of water guide plates.

10. A water-cooled load resistor module according to claim 9, characterized in that: The number of the screws is multiple, and the multiple screws are distributed around the circumferential side of the water guide plate.

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