Multi-conductor insulated connector in high-voltage environment

Abstract

The invention relates to the technical field of electrical connection, in particular to a multi-conductor insulated connector in a high-voltage environment, which comprises a main body, and an electric power loading assembly is fixedly connected in the main body; the sealing ring and the sealant are used for preventing water and dust from entering the connector and ensuring the stability of the insulating property, the sealing ring can be tightly attached to the shell and the terminals of the connector and prevent water from entering the connector through gaps, and the sealant can permeate and cover the small gaps, so that the sealing effect is further enhanced, and the service life of the connector is prolonged. A layer of waterproof film is formed after the sealant is cured, moisture permeation can be effectively prevented, the conductor terminals are isolated through the insulating partition plates, the thickness and the material of the insulating partition plates are optimized so as to meet the requirements for electrical gaps and creepage distances in a high-voltage environment, the conductor terminals are made of copper alloy materials, and the service life of the conductor terminals is prolonged. And a polytetrafluoroethylene insulating layer is plated on the surface to enhance the insulating property.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical connection, in particular to a multi-conductor insulation connector in high-voltage environment. BACKGROUND

[0002] In high-voltage electrical systems, the insulation performance of multi-conductor connectors is crucial. A multi-conductor connector is an electrical connection device used in electrical systems that can connect multiple conductors simultaneously. It is mainly used to achieve electrical connection, signal transmission or power distribution between multiple circuits.

[0003] A multi-conductor connector is an electrical connection device containing multiple conductive terminals, used to establish connections between multiple conductors in different electrical devices. It connects multiple conductors together through mechanical and electrical means, ensuring that current or signals can be reliably transmitted between multiple circuits.

[0004] Currently, in high-voltage environments, the insulation material of multi-conductor connectors needs to withstand extremely high electric field strength. If the electrical performance of the insulation material is insufficient, or if there are defects in the insulation layer, it may lead to insulation breakdown. Insulation breakdown refers to the loss of insulation performance of the insulation material under high voltage, forming a conductive channel and causing current leakage or even short circuit. This phenomenon not only damages the connector itself, but also may cause a fire or explosion, posing a serious threat to the safe operation of the entire electrical system. Arc discharge refers to the breakdown of air or other insulating media under high voltage, forming a conductive channel and producing intense electric arc. In multi-conductor connectors, arc discharge may occur between conductor terminals, between terminals and the shell, or on the surface of the insulation material. Arc discharge produces high-temperature, high-energy plasma that can instantly melt metal terminals and even burn out the insulation part of the connector. In addition, arc discharge also produces electromagnetic interference, affecting the normal operation of surrounding electronic equipment. Therefore, a multi-conductor insulation connector in high-voltage environment is needed to improve the above problems. SUMMARY

[0005] In order to solve the current in high voltage environment, the insulating material of multi-conductor connector needs to withstand very high electric field strength. If the electrical performance of the insulating material is insufficient, or there are defects in the insulating layer, it may cause insulation breakdown. Insulation breakdown refers to the loss of insulation performance of the insulating material under high voltage, forming a conductive channel to cause current leakage or even short circuit. This phenomenon not only damages the connector itself, but also may cause fire or explosion, which poses a serious threat to the safe operation of the entire electrical system, arc discharge refers to the breakdown of air or other insulating medium under high voltage, forming a conductive channel, producing strong arc, in multi-conductor connector, arc discharge may occur between the conductive terminals, between the terminals and the shell, or on the surface of the insulating material. Arc discharge can produce high-temperature, high-energy plasma, which can instantly melt the metal terminals, and even burn the insulating part of the connector, in addition, arc discharge also produces electromagnetic interference, affecting the normal operation of the surrounding electronic equipment, the purpose of the present application is to provide a multi-conductor insulation connector in high voltage environment, to solve the problems raised in the above background art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: A multi-conductor insulation connector in high voltage environment, comprising a main body, the inside of the main body is fixedly connected with a power loading assembly; The main body comprises an insulating shell, the side of the insulating shell is provided with an integrated cable, the contact surface of the insulating shell and the integrated cable is coated with sealing glue, the top of the insulating shell is provided with a top cover, the bottom of the top cover is provided with a sealing ring, the sealing ring is made of high-temperature resistant and corrosion resistant silicone rubber material, the sealing glue is made of epoxy resin; The power loading assembly comprises a mounting plate, the top of the mounting plate is fixedly connected with a terminal row, the side of the terminal row is fixedly connected with an insulating partition plate, the side of the insulating partition plate is fixedly connected with a conductor terminal.

[0007] As a preferred scheme of the present application, the conductor terminal is made of copper alloy material, and the surface is plated with a polytetrafluoroethylene insulating layer.

[0008] As a preferred scheme of the present application, the insulating shell is made of high-strength modified polyimide insulating material, and the inside of the insulating shell is filled with sulfur hexafluoride insulating gas.

[0009] As a preferred scheme of the present application, the side of the conductor terminal is fixedly connected with an integrated circuit converter, and the integrated cable is in communication with the integrated circuit converter.

[0010] As a preferred scheme of the present application, the top of the top cover is fixedly connected with a nameplate, and the type is marked on the nameplate.

[0011] As a preferred scheme of the present application, the inside of the top cover is provided with a through hole, and the through hole is provided with four.

[0012] As a preferred scheme of the present application, the inside of the through hole is provided with a threaded rod, and the threaded rod is provided with four.

[0013] As a preferred scheme of the present application, the inside of the insulating shell is provided with a threaded hole, and the threaded hole is provided with four.

[0014] As a preferred scheme of the present application, the inside diameter of the threaded hole and the outside diameter of the threaded rod adopt a clearance fit tolerance of H7 / g6, and the threaded surface is treated by a Dacromet coating. The head of the threaded rod is provided with a hexagonal head with a diameter of 12mm, and the tolerance of the opposite side size of the hexagonal head is ±0.05mm.

[0015] As a preferred scheme of the present application, the sealant adopts a two-component room temperature vulcanized silicone rubber, and the sealant forms a continuous glue layer on the contact surface of the insulating shell and the integrated cable, and silica is added as a reinforcing filler in the glue layer.

[0016] Compared with the prior art, the present application has the following beneficial effects: 1、In the present application, the sealing ring and the sealant are used to prevent moisture and dust from entering the inside of the connector, ensuring the stability of the insulation performance. The sealing ring can tightly fit the shell and the terminal of the connector, preventing moisture from entering the inside through the gap. The elastic design of the sealing ring can effectively block dust and other solid particles, keeping the inside of the connector clean. The sealant can penetrate and cover small gaps, further enhancing the sealing effect. After the sealant solidifies, a waterproof film is formed, which can effectively prevent the penetration of moisture.

[0017] 2、In the present application, the conductive terminals are isolated by the insulating partition, and the thickness and material of the insulating partition are optimized to meet the electrical clearance and creepage distance requirements in a high-voltage environment. The inside of the insulating shell is filled with sulfur hexafluoride insulating gas, which can further improve the insulation performance. The conductive terminals are made of copper alloy material and are coated with a polytetrafluoroethylene insulating layer to enhance the insulation performance. The insulating shell is made of high-strength modified polyimide insulating material, which can withstand high voltage and provide good mechanical strength. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the internal structure of the present application; Figure 3 is a schematic diagram of the side structure of the present application; Figure 4 is a schematic diagram of the disassembly and assembly structure of the present application.

[0019] In the figure: 1, main body; 101, insulating shell; 102, integrated cable; 103, sealing glue; 104, top cover; 105, sealing ring; 106, nameplate; 107, perforation; 108, threaded rod; 109, threaded hole; 2, power loading assembly; 201, mounting plate; 202, terminal array; 203, insulating partition; 204, conductor terminal; 205, integrated line converter. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment, please refer to Figures 1-4 The present application provides a technical solution: A multi-conductor insulated connector in a high-voltage environment, comprising a main body 1, the inside of the main body 1 is fixedly connected with a power loading assembly 2.

[0022] In this embodiment as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the main body 1 includes an insulating shell 101, the side of the insulating shell 101 is provided with an integrated cable 102, the contact surface of the insulating shell 101 and the integrated cable 102 is coated with sealing glue 103, the top of the insulating shell 101 is provided with a top cover 104, the bottom of the top cover 104 is provided with a sealing ring 105, the sealing ring 105 is made of high-temperature-resistant and corrosion-resistant silicone rubber material, the sealing glue 103 is made of epoxy resin, the power loading assembly 2 includes a mounting plate 201, the top of the mounting plate 201 is fixedly connected with a terminal array 202, the side of the terminal array 202 is fixedly connected with an insulating partition 203, the side of the insulating partition 203 is fixedly connected with a conductor terminal 204, the sealing ring 105 and the sealing glue 103 are used to prevent moisture and dust from entering the inside of the connector, to ensure the stability of the insulation performance, the sealing ring 105 can tightly fit the shell and the terminal of the connector, to prevent moisture from entering the inside through the gap, the elastic design of the sealing ring 105 can effectively block dust and other solid particles, to keep the inside of the connector clean, the sealing glue 103 can penetrate and cover small gaps, to further enhance the sealing effect, the sealing glue 103 forms a waterproof film after solidification, to effectively prevent the penetration of moisture.

[0023] The conductor terminal 204 is made of copper alloy material, and the surface is plated with a polytetrafluoroethylene insulating layer, the insulating shell 101 is made of high-strength modified polyimide insulating material, the inside of the insulating shell 101 is filled with sulfur hexafluoride insulating gas, the side of the conductor terminal 204 is fixedly connected with an integrated line converter 205, the integrated cable 102 is in communication with the integrated line converter 205, the conductor terminals 204 are isolated by the insulating partition plates 203, the thickness and material of the insulating partition plates 203 are optimized to meet the electrical clearance and creepage distance requirements in a high-voltage environment, the inside of the insulating shell 101 is filled with sulfur hexafluoride insulating gas, which can further improve the insulation performance, the conductor terminal 204 is made of copper alloy material, and the surface is plated with a polytetrafluoroethylene insulating layer to enhance the insulation performance, and the insulating shell 101 is made of high-strength modified polyimide insulating material, which can withstand high voltage and provide good mechanical strength.

[0024] In this embodiment, as shown in Figure 1 and Figure 4 The top of the top cover 104 is fixedly connected with a nameplate 106, the type is marked on the nameplate 106, the inside of the top cover 104 is provided with four perforations 107, the inside of the perforation 107 is provided with a threaded rod 108, the insulating shell 101 is provided with four threaded holes 109, the top cover 104 of the connector is fixed on the insulating shell 101 through the threaded rod 108 and the threaded hole 109, ensure the mechanical stability of the connector in a high-voltage environment, during maintenance, the threaded connection can be quickly disassembled through a simple rotating action, which is convenient for checking and replacing damaged parts, the threaded connection enables each part of the connector to be independently disassembled and replaced, without the need to replace the entire connector, thereby reducing the maintenance cost, and the detachability of the threaded connection enables maintenance personnel to easily check the insulation state, conductor connection condition and sealing performance inside the connector, and timely discover potential problems.

[0025] In the application, the inner diameter of the threaded hole 109 and the outer diameter of the threaded rod 108 adopt an H7 / g6 clearance fit tolerance, the thread specification is M8x1.25 fine thread, and the pitch accuracy meets the 6H / 6g level requirement of GB / T197-2003; the depth of the threaded hole 109 is 20mm, the effective screwing length of the threaded rod 108 is 18mm, and the threaded surface is treated by a Dacromet coating, and the coating thickness is 8-12μm, so as to enhance the corrosion resistance and anti-loosening performance; the head of the threaded rod 108 is provided with a hexagonal head with a diameter of 12mm, and the opposite side dimension tolerance of the hexagonal head is ±0.05mm, so as to facilitate precise installation by using a standard tool.

[0026] In the application, the sealant 103 adopts two-component room temperature vulcanized silicone rubber, the mixing ratio is A:B=10:1, the Shore hardness is 40-45HA, the tensile strength is greater than or equal to 3.5MPa, and the elongation at break is greater than or equal to 300%; the sealant 103 forms a continuous glue layer with a thickness of 1.2mm on the contact surface of the insulating shell 101 and the integrated cable 102, the distance between the glue layer edge and the inner wall of the insulating shell 101 is 3mm, and the glue layer is added with fumed silica with a particle size of 5-10um as a reinforcing filler, the filler content is 8wt%, so as to improve the tear resistance and arc resistance; the surface resistance of the cured sealant 103 is greater than or equal to 1x10 4 Ω, the volume resistivity is greater than or equal to 1x10 5 Ω·cm, and the breakdown field strength is greater than or equal to 25kV / mm.

[0027] The working process of the application is as follows: when the multi-conductor insulation connector designed by the application is used in a high-voltage environment, the conductor terminal 204 is made of copper alloy material, and the surface is plated with a polytetrafluoroethylene insulating layer; the insulating shell 101 is made of modified polyimide material, which has good insulation performance and mechanical strength; the sealing ring 105 is made of high-temperature-resistant and corrosion-resistant silicone rubber material; the sealant 103 is made of epoxy resin and filled with insulating gas such as sulfur hexafluoride in the insulating shell 101; the connector is subjected to high-voltage withstand test to verify its insulation performance and ensure that the connector can withstand the stress in actual use for mechanical strength test.

[0028] Although the embodiments of the application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A multi-conductor insulated connector in a high voltage environment comprising a main body (1), characterized in that: The inside of the main body (1) is fixedly connected with a power loading assembly (2); The main body (1) comprises an insulating shell (101), the side of the insulating shell (101) is provided with an integrated cable (102), the contact surface of the insulating shell (101) and the integrated cable (102) is coated with sealing glue (103), the top of the insulating shell (101) is provided with a top cover (104), the bottom of the top cover (104) is provided with a sealing ring (105), the sealing ring (105) is made of high-temperature-resistant and corrosion-resistant silicone rubber material, and the sealing glue (103) is made of epoxy resin. The power loading assembly (2) comprises a mounting plate (201), the top of the mounting plate (201) is fixedly connected with a terminal row (202), the side of the terminal row (202) is fixedly connected with an insulating partition plate (203), and the side of the insulating partition plate (203) is fixedly connected with a conductor terminal (204).

2. A multi-conductor insulated connector for use in a high voltage environment according to claim 1, wherein, The conductor terminal (204) is made of copper alloy material and is plated with a polytetrafluoroethylene insulating layer on the surface.

3. A multi-conductor insulated connector for use in a high voltage environment according to claim 1, wherein, The insulating shell (101) is made of high-strength modified polyimide insulating material, and is filled with sulfur hexafluoride insulating gas inside.

4. A multi-conductor insulated connector for use in a high voltage environment according to claim 1, wherein, The side of the conductor terminal (204) is fixedly connected with an integrated line converter (205), and the integrated cable (102) communicates with the integrated line converter (205).

5. A multi-conductor insulated connector for use in a high voltage environment according to claim 1, wherein, The top of the top cover (104) is fixedly connected with a nameplate (106), and the type is marked on the nameplate (106).

6. A multi-conductor insulated connector for use in a high voltage environment according to claim 1, wherein, The inside of the top cover (104) is provided with four perforations (107).

7. A multi-conductor insulated connector for use in a high voltage environment according to claim 6, wherein, The inside of the perforation (107) is provided with a threaded rod (108), and the threaded rod (108) is provided with four.

8. A multi-conductor insulated connector for use in a high voltage environment according to claim 1, wherein, The inside of the insulating shell (101) is provided with four threaded holes (109).

9. A multi-conductor insulated connector for use in a high voltage environment according to claim 7, wherein, The inside diameter of the threaded hole (109) and the outside diameter of the threaded rod (108) adopt an H7 / g6 clearance fit tolerance, the depth of the threaded hole (109) is 20mm, the effective screwing length of the threaded rod (108) is 18mm, the threaded surface is treated by a dacromet coating, the coating thickness is 8-12μm, and the threaded rod (108) is provided with a hexagonal head at the head.

10. A multi-conductor insulated connector for use in a high voltage environment according to claim 8, wherein, The sealing glue (103) adopts two-component room temperature vulcanized silicone rubber; the sealing glue (103) forms a continuous glue layer on the contact surface of the insulating shell (101) and the integrated cable (102), and gas-phase silicon dioxide is added as a reinforcing filler in the glue layer.

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