A modular water-cooled resistor

Abstract

The present invention belongs to the technical field of resistor components, and specifically relates to a modular water-cooled resistor, including an aluminum heat dissipation shell, two lead interfaces are provided on one side of the aluminum heat dissipation shell, a lead-out piece with a step structure is screwed into the lead interface, a water inlet interface and a water outlet interface are provided on the other side of the aluminum heat dissipation shell, a mica board is provided in the aluminum heat dissipation shell, an insulating support seat is provided above the mica board, a resistor plate is laid on the top of the insulating support seat, an aluminum cover plate is provided above the resistor plate, and lead-out bolts are connected to the lead-out piece with both ends respectively, and the lead-out bolts are screwed and fixed. Compared with the prior art, the present invention has the following advantages: the water-cooled resistor achieves high power capacity in a limited space, ensures the use of water cooling effect in a limited space, is quick to assemble and use, has a small overall size of the resistor, and greatly increases the scope of application.

Description

Technical Field

[0001] The invention belongs to the technical field of resistor components, and in particular relates to a modular water-cooled resistor. Background Art

[0002] The cooling methods for resistor components on the current market are mostly natural cooling or forced air cooling. Water-cooled resistors are mostly high-power load equipment products. Current technology cannot introduce component products into water cooling systems. Existing resistors have weak heat dissipation capabilities, resulting in larger volume and weight under the same power conditions. The power capacity of modular products cannot be changed by adding or reducing modules. Summary of the invention

[0003] The purpose of the present invention is to provide a modular water-cooled resistor to solve the problem that most existing water-cooled resistors are high-power load products and cannot achieve water cooling for small resistor components.

[0004] The present invention is realized through the following technical scheme: a modular water-cooled resistor, comprising an aluminum heat dissipation shell, two lead interfaces are arranged on one side of the aluminum heat dissipation shell, the lead interfaces are screwed with a lead-out piece with a step structure, a through hole is arranged inside the lead-out piece, a water inlet interface and a water outlet interface are arranged on the other side of the aluminum heat dissipation shell, a rectangular support platform is arranged in the aluminum heat dissipation shell, a plurality of positioning screw holes are evenly distributed on the rectangular support platform, a rectangular groove is arranged in the rectangular support platform, a plurality of internal threaded holes are evenly arranged in the rectangular groove, a mica board matching the rectangular groove structure is arranged in the rectangular groove, a limit opening corresponding to the internal threaded hole is arranged on the mica board, an insulating support seat is arranged above the mica board, and the insulating support seat is arranged above the mica board. The mica board is fixed to the aluminum heat dissipation shell after the bottom of the support seat passes through the limiting opening and the internal threaded hole, and the top of the insulating support seat is provided with a screw hole; a resistor plate is laid on the top of the insulating support seat, and the resistor plate is formed by connecting a plurality of strip plates, and the position of the resistor plate corresponding to the insulating support seat is provided with a positioning opening with the same diameter as the screw hole, and the resistor plate and the insulating support seat are fastened by passing the fastening screws through the positioning opening and the screw hole; an aluminum cover plate matching the rectangular support platform is provided above the resistor plate, and a locking hole is provided on the aluminum cover plate at a position corresponding to the positioning screw hole, and the locking screw passes through the locking hole and the positioning screw hole to fix the aluminum cover plate to the aluminum heat dissipation shell; both ends of the resistor plate are respectively connected with lead-out bolts, and the lead-out bolts are screwed and fixed to the lead-out piece.

[0005] Specifically, a frame-shaped groove is provided on the rectangular support platform, and a frame-shaped sealing strip is embedded in the frame-shaped groove to achieve a better sealing effect.

[0006] Specifically, the fastening screws and the retaining screws are both aluminum nitride ceramic screws, the insulating support seat is made of polytetrafluoroethylene material, and has excellent heat resistance and insulation; the aluminum heat dissipation shell and aluminum cover plate are made of 6061 aluminum profile, have good plasticity and excellent corrosion resistance, and can be anodized and colored; the material of the mica board is white mica, which has excellent thermal insulation and electrical properties; the frame-type sealing strip is made of silicone material, which is widely used in aerospace, electronics, machinery and other industries; the raw material of the resistor board is a nickel-chromium resistor material with a low temperature coefficient, which can effectively reduce the temperature influence of the resistor during operation.

[0007] Specifically, the resistor plate is an integrally formed structure obtained by CNC processing, which has high precision and can ensure the quality of the resistor plate.

[0008] Specifically, the lead-out bolt is a stainless steel bolt, the through hole is a polytetrafluoroethylene internal thread, the polytetrafluoroethylene internal thread is screwed to the lead-out bolt through wet raw tape, and is reinforced with high-temperature glue to ensure strength and sealing; the inner part of the lead-out piece is provided with a polytetrafluoroethylene external thread matching the internal thread of the lead-in interface, and the polytetrafluoroethylene external thread is screwed to the internal thread of the lead-in interface through wet raw tape.

[0009] Specifically, the lead-out bolts and the resistor plate are connected and fixed by a argon arc welding process, which can ensure connection stability.

[0010] Specifically, the cooling water used for the water-cooled resistor is pure water, which has excellent insulation properties.

[0011] Optimized, the specifications of the internal threaded hole and the positioning screw hole are M3 internal threads, and the lead-out bolts are M6 bolts; the water inlet and outlet interfaces are both M10 interfaces, and the water inlet pressure is 0.2MPa, which is determined by the capacitor power and the required water volume and flow rate.

[0012] Compared with the prior art, the present invention has the following advantages: the resistor plate is prepared by using a nickel-chromium resistor material with a low temperature coefficient, so that the resistor plate can achieve high power capacity in a limited space, reduce the influence of temperature on the resistor, and improve the safety of use; the structure of the aluminum heat dissipation shell is reasonably arranged to effectively ensure the water-cooling sealing and ensure the water-cooling effect in a limited space; the installation method is to install at the bottom of the fastener, and the assembly and use are quick; the overall size of the resistor is small, and the scope of application is greatly increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the decomposition structure of the present invention.

[0014] Figure 2 It is a structural schematic diagram of an aluminum heat dissipation shell.

[0015] Figure 3 It is a structural diagram of the resistor plate.

[0016] Figure 4 It is a top view of the water-cooled resistor.

[0017] Figure 5 yes Figure 4 Left view of .

[0018] Figure 6 It is a structural schematic diagram of an insulating support seat.

[0019] Figure 7 It is a schematic diagram of the structure of the lead-out component. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings.

[0021] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1-7As shown in, a modular water-cooled resistor comprises an aluminum heat dissipation shell 1, wherein two lead interfaces 14 are provided on one side of the aluminum heat dissipation shell 1, wherein the lead interface 14 is screwed with a lead-out piece 2 having a step structure, wherein a through hole 21 is provided inside the lead-out piece 2, and a water inlet interface 15 and a water outlet interface 16 are provided on the other side of the aluminum heat dissipation shell 1, wherein a rectangular support platform 11 is provided inside the aluminum heat dissipation shell 1, wherein a plurality of positioning screw holes 111 are evenly distributed on the rectangular support platform 11, wherein a rectangular groove 13 is provided inside the rectangular support platform 11, wherein a plurality of internal threaded holes 131 are evenly provided inside the rectangular groove 13, wherein a mica plate 6 matching the structure of the rectangular groove 13 is provided inside the rectangular groove 13, wherein a limiting opening 61 corresponding to the internal threaded hole 131 is provided on the mica plate 6, wherein an insulating support seat 4 is provided above the mica plate 6, wherein the bottom of the insulating support seat 4 passes through the limiting opening 61 After the mica plate 6 is fixed to the aluminum heat dissipation shell 1, a screw hole 41 is provided on the top of the insulating support seat 4; a resistor plate 3 is laid on the top of the insulating support seat 4, and the resistor plate 3 is formed by connecting a plurality of strip plates, which is a series structure in the circuit. A positioning opening 31 with the same diameter as the screw hole 41 is provided at the position of the resistor plate 3 corresponding to the insulating support seat 4, and the resistor plate 3 is fastened to the insulating support seat 4 by passing the fastening screw through the positioning opening 31 and the screw hole 41; an aluminum cover plate 5 matching the rectangular support platform 4 is provided above the resistor plate 3, and a locking hole 51 is provided at a position corresponding to the positioning screw hole 111 on the aluminum cover plate 5, and a locking screw 52 passes through the locking hole 51 and the positioning screw hole 111 to fix the aluminum cover plate 5 to the aluminum heat dissipation shell 1; the two ends of the resistor plate 3 are respectively connected with lead-out bolts 7, and the lead-out bolts 7 are screwed and fixed to the lead-out member 2.

[0024] Specifically, a frame-shaped groove is provided on the rectangular support platform, and a frame-shaped sealing strip is embedded in the frame-shaped groove to achieve a good sealing effect; the resistor plate 3 is an integrated structure obtained by CNC processing, which has high precision and can ensure the quality of the resistor plate; the fastening screws and the positioning screws are both aluminum nitride ceramic screws, and the insulating support seat 4 is made of polytetrafluoroethylene material, which has excellent heat resistance and insulation; the aluminum heat dissipation shell 1 and the aluminum cover plate 5 are made of 6061 aluminum profiles, which have good plasticity and excellent corrosion resistance and can be anodized and colored; the material of the mica plate 6 is white mica, which has excellent thermal insulation and insulation performance; the frame-shaped sealing strip is made of silicone material, which is widely used in aerospace, electronics, machinery and other industries; the raw material of the resistor plate 3 is a nickel-chromium resistor material with a low temperature coefficient, which can effectively reduce the temperature influence of the resistor when it is working;

[0025] The lead-out bolt 7 is a stainless steel bolt, and the penetration hole 21 is a polytetrafluoroethylene internal thread 22, which is screwed to the lead-out bolt 7 through a wet raw tape, and is reinforced with high-temperature glue to ensure strength and sealing; the inner part of the lead-out piece 2 is provided with a polytetrafluoroethylene external thread 23 matching the internal thread of the lead-in interface 14, and the polytetrafluoroethylene external thread 23 is screwed to the internal thread of the lead-in interface 14 through a wet raw tape;

[0026] The lead-out bolt 7 is connected and fixed to the resistor plate 3 by an argon arc welding process, which can ensure connection stability.

[0027] When in use, the cooling water used for the water-cooled resistor is pure water, which has excellent insulation properties; the specifications of the internal threaded holes and positioning screw holes are M3 internal threads, and the lead-out bolts are M6 bolts; the water inlet and outlet interfaces are both M10 interfaces, and the water inlet pressure is 0.2MPa, which is determined by the capacitor power and the required water volume and flow rate.

[0028] The resistor obtained in the present invention was subjected to a power-on verification and the temperature of the water outlet interface 16 was tested. The maximum power that the resistor could reach was 5 kW and the temperature at the water outlet interface was 90°C.

[0029] The present invention uses nickel-chromium resistor materials with low temperature coefficient to prepare resistor plates, so that the resistor plates can achieve high power capacity in a limited space, reduce the influence of temperature on the resistor, and improve safety in use; the structure of the aluminum heat dissipation shell is reasonably arranged to effectively ensure water-cooling sealing and ensure the use of water cooling effect in a limited space; the installation method is to install at the bottom of the matching fastener, and the assembly and use are quick; the overall size of the resistor is small, and the scope of application is greatly increased.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A modular water-cooled resistor, characterized in that: It comprises an aluminum heat dissipation shell, wherein two lead interfaces are arranged on one side of the aluminum heat dissipation shell, wherein the lead interfaces are screwed with a lead-out piece having a step structure, wherein a through hole is arranged inside the lead-out piece, and a water inlet interface and a water outlet interface are arranged on the other side of the aluminum heat dissipation shell, wherein a rectangular support platform is arranged inside the aluminum heat dissipation shell, wherein a frame-shaped groove is arranged on the rectangular support platform, wherein a frame-shaped sealing strip is embedded in the frame-shaped groove, wherein a plurality of positioning screw holes are evenly distributed on the rectangular support platform, wherein a rectangular groove is arranged inside the rectangular support platform, wherein a plurality of internal threaded holes are evenly arranged inside the rectangular groove, wherein a mica board matching the rectangular groove structure is arranged inside the rectangular groove, wherein a limiting opening corresponding to the internal threaded hole is arranged on the mica board, wherein an insulating support seat is arranged above the mica board, wherein the bottom of the insulating support seat passes through the limiting opening and internal threaded holes, and then the mica board is fixed to the aluminum heat dissipation shell, and a screw hole is provided on the top of the insulating support seat; a resistor plate is laid on the top of the insulating support seat, and the resistor plate is an integrated structure obtained by CNC processing. The resistor plate is formed by connecting multiple strip plates, and a positioning opening with the same diameter as the screw hole is provided at the position of the resistor plate corresponding to the insulating support seat, and the resistor plate and the insulating support seat are fastened by passing the positioning opening and the screw hole by fastening screws; an aluminum cover plate matching the rectangular support platform is provided above the resistor plate, and a locking hole is provided on the aluminum cover plate at a position corresponding to the positioning screw hole, and the locking screw passes through the locking hole and the positioning screw hole to fix the aluminum cover plate to the aluminum heat dissipation shell; lead-out bolts are respectively connected to the two ends of the resistor plate, and the lead-out bolts are screwed and fixed to the lead-out piece.

2. A modular water-cooled resistor as claimed in claim 1, characterized in that: The fastening screws and the retaining screws are both aluminum nitride ceramic screws, the insulating support seat is made of polytetrafluoroethylene material; the aluminum heat dissipation shell and the aluminum cover plate are made of 6061 aluminum profile; the mica board is made of white mica; the frame-type sealing strip is made of silicone material; the raw material of the resistor plate is a nickel-chromium resistor material with a low temperature coefficient.

3. A modular water-cooled resistor as claimed in claim 1, characterized in that: The lead-out bolt is a stainless steel bolt, the penetration hole is a polytetrafluoroethylene internal thread, the polytetrafluoroethylene internal thread is screwed to the lead-out bolt through wet raw tape, and is reinforced by high-temperature glue; the inner part of the lead-out piece is provided with a polytetrafluoroethylene external thread matching the internal thread of the lead-in interface, and the polytetrafluoroethylene external thread is screwed to the internal thread of the lead-in interface through wet raw tape.

4. A modular water-cooled resistor as claimed in claim 1, characterized in that: The lead-out bolts are connected and fixed to the resistor plate by means of an argon arc welding process.

5. A modular water-cooled resistor as claimed in claim 1, characterized in that: The cooling water used for water-cooled resistors is pure water.

6. A modular water-cooled resistor as claimed in claim 1, characterized in that: The specifications of the internal threaded holes and the positioning screw holes are M3 internal threads, and the lead-out bolts are M6 bolts.

7. A modular water-cooled resistor as claimed in claim 1, characterized in that: The water inlet and outlet interfaces are both M10 interfaces, and the water inlet pressure is 0.2MPa.

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