Withstand voltage test device for pre-embedded cable harness

Abstract

The invention relates to the technical field of voltage withstanding testing, in particular to a voltage withstanding testing device of a pre-buried cable harness, which comprises a shell, one side of the shell is provided with an opening, the opening of the shell is rotatably provided with a pair of protective doors, and one side, facing the shell, of each pair of protective doors is provided with a heat reflection assembly for reflecting heat; the side, away from the heating assembly, of the flow dividing cover is a plane, multiple sets of heat dissipation holes are formed in the cambered surfaces of the two sides of the flow dividing cover in a linear array mode, each set comprises at least three heat dissipation holes, and the end, away from the flow dividing cover, of each drainage assembly is provided with an airflow assembly used for releasing heat. Through a heating assembly, an airflow transmission assembly, a drainage assembly and an airflow assembly in the temperature control mechanism, adjustment of heating temperatures of different positions of the cable harness and uniform heating of the different positions of the cable harness can be realized, and through adjustment of the temperatures of all the positions of the cable harness, the local insulation weakness of the cable harness can be identified and solved; and the overall safety and reliability of the cable are improved.

Description

Technical Field

[0001] The invention relates to the technical field of withstand voltage testing, and in particular to a withstand voltage testing device for a pre-buried cable harness. Background Art

[0002] The withstand voltage test device for pre-buried cable harnesses is a device used to evaluate the insulation performance of cables. By applying a voltage higher than the normal operating voltage, the insulation resistance and leakage current of the cables are monitored in real time to ensure the safety and reliability of the cables after burial.

[0003] In the existing pressure-withstand test device for pre-buried cable harnesses, the temperature of each position of the cable harness remains basically consistent during the pressure-withstand test of the cable harness. However, in actual use, the insulation material of the cable has different thermal conductivities at different positions, which affects the conduction and distribution of heat, resulting in differences in the temperature of the insulation material of the cable at different positions, thereby causing local overheating of the insulation layer in the temperature-higher area, increasing the risk of breakdown. The cable harness with consistent temperature during the pressure-withstand test cannot detect the impact of temperature differences on the insulation performance in actual use, thereby failing to accurately assess the insulation reliability and breakdown risk of the cable under actual working conditions, affecting the long-term safety and reliability of the cable. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a voltage withstand testing device for a pre-buried cable harness, which can effectively solve the problem in the prior art that the temperature of each position of the cable harness remains basically consistent during detection, and the insulating material of the cable has different thermal conductivity at different positions, thereby failing to accurately evaluate the insulation reliability and breakdown risk of the cable under actual working conditions, affecting the long-term safety and reliability of the cable.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a withstand voltage test device for a pre-buried cable harness, comprising: A shell, one side of the shell has an opening, a pair of protective doors are rotatably mounted on the opening of the shell, and a heat reflection component for reflecting heat is arranged on a side of each pair of protective doors facing the shell; A temperature control mechanism, the temperature control mechanism includes four heating components arranged at the four corners of the upper and lower inner walls of the shell, each of the heating components is provided with an airflow transmission component for conveying gas on the side, and the heating component is provided with a diverter cover for collecting heat on the side away from the inner wall of the shell, the two sides of the diverter cover are curved surfaces, and the side of the diverter cover away from the heating component is a plane, the curved surfaces on both sides of the diverter cover are linearly arrayed with multiple groups of heat dissipation holes, each group of the heat dissipation holes is at least three, the planar linear array of the diverter cover is provided with multiple drainage components for transmitting and guiding airflow, and each of the drainage components is provided with an airflow component for releasing heat on the end away from the diverter cover.

[0006] Preferably, the heat reflection assembly includes a plurality of reflection covers fixedly connected to the side of the protective door in a linear array, and the interior of each of the reflection covers is provided with a plurality of reflection oblique plates fixedly connected in a linear array and arranged in sequence in opposite directions, and the reflection oblique plates in two adjacent directions sequentially form a reflection cavity.

[0007] Preferably, the heating assembly includes a heat insulation box fixedly connected to the inner wall of the outer shell, a heating tube is fixedly connected to the inner bottom of the heat insulation box, a heat sink is fixedly connected to the inner middle of the heat insulation box, a side of the heat insulation plate away from the heating tube and a plurality of heat dissipation strips are fixedly connected in a linear array along the length direction of the heat dissipation plate, two adjacent heat dissipation strips constitute a heat dissipation area in the heat dissipation plate, the heat dissipation area linear array of the heat dissipation plate has a plurality of heat dissipation balls fixedly connected along the width direction of the heat dissipation plate, a plurality of porous partition plates are fixedly connected in a linear array on the inner top of the heat insulation box, each adjacent porous partition plate and both sides of the heat insulation box together constitute an installation area on the top of the heat insulation box, and telescopic empty blocks are provided in the installation area of ​​the heat insulation box.

[0008] Preferably, the airflow transmission component includes a transmission pipe fixedly connected to the outside of the heat insulation box, the input end of the transmission pipe on the same side is commonly connected to a three-way pipe, the three-way pipe has two input ends and one output end, and the two input ends are respectively connected to the transmission pipe on the same side of the shell, the output end of the three-way pipe is fixedly connected to a connecting pipe, and the end of the connecting pipe away from the three-way pipe is fixedly connected to a gas conveyor, and the gas conveyor is arranged on the outside of the shell, the tube body of the transmission pipe is inlaid with a plurality of electromagnetic bypass valves, and the position and number of the electromagnetic bypass valves correspond to the installation area of ​​the heat insulation box, the electromagnetic bypass valve has two input ends and one output end, and the two input ends of the electromagnetic bypass valve are connected to the transmission pipe, the output end of the electromagnetic bypass valve is fixedly connected to an input pipe, and the end of the input pipe away from the electromagnetic bypass valve passes through the heat insulation box and is connected to the telescopic empty block at the corresponding position.

[0009] Preferably, the drainage assembly comprises a drainage barrel fixedly connected to the plane of the diverter cover, a plurality of drainage grooves are provided in an annular array on the inner circumference of the drainage barrel, and a vortex fan is rotatably connected to the inner bottom of the drainage barrel.

[0010] Preferably, the airflow component includes a connecting plate fixedly connected to one end of the drainage barrel, and a plurality of diverter blocks and a plurality of diverter rods are fixedly connected to a cross-distributed annular array on the inner circumference of the connecting plate close to the drainage barrel, and the diverter blocks and the diverter rods are alternately arranged in an annular array on the inner circumference of the connecting plate, and each of the diverter blocks is provided with a diverter groove at the center position of the side facing the drainage barrel, and a plurality of diverter holes connected to the diverter groove are provided on both symmetrical sides of the diverter blocks, and each of the diverter blocks and the diverter rod is fixedly connected to a support plate at one end away from the connecting plate, and a spiral fan is rotatably connected to a side of the support plate away from the drainage barrel.

[0011] Preferably, a cable harness is arranged in the inner middle part of the shell, a plurality of temperature detectors are arranged inside the shell, and the temperature detectors correspond to the telescopic space blocks, a voltage tester is arranged at the center position of the top of the shell, and the positive and negative poles of the voltage tester are electrically connected to the two ends of the cable harness respectively, and a plurality of indicator lights corresponding to the number of temperature detectors are arranged on the top of the shell, and each indicator light is electrically connected to a temperature detector.

[0012] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: The withstand voltage test device of the pre-buried cable harness can adjust the heating temperature of different positions of the cable harness and uniformly heat different positions of the cable harness through the heating component, airflow transmission component, drainage component and airflow component in the temperature control mechanism. Among them, the airflow transmission component inputs different amounts of gas with heat insulation effect into the telescopic blocks at different positions in the heating component, thereby realizing the heat transmission efficiency of the telescopic blocks at different positions, and then realizing the heating effect of the heating component on different positions of the cable harness. The drainage component and the airflow component realize the spiral transmission of the heat transmitted by the telescopic blocks at different positions, thereby realizing the heat transmitted by the telescopic blocks at different positions can fully act on the cable harness at the corresponding position, thereby improving the heating effect of different positions of the cable harness, thereby realizing the withstand voltage test device testing when different temperatures appear at different positions of the cable harness. By adjusting the temperature of each position of the cable harness, the working environment of the cable harness in actual use can be simulated, which helps to identify and solve the weaknesses of the local insulation of the cable harness and improve the overall safety and reliability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the heat reflection component of the present invention; Figure 3 It is a schematic diagram of the structure of the overall internal cable harness of the present invention; Figure 4 It is a schematic diagram of the overall internal structure of the present invention; Figure 5 It is a structural schematic diagram of the temperature control mechanism of the present invention; Figure 6 It is a structural schematic diagram of the heating component of the present invention; Figure 7 It is a schematic diagram of the structure inside the heating component of the present invention; Figure 8 It is a structural schematic diagram of the heat dissipation plate of the present invention; Fig. 9 This is a schematic diagram of the structure of the telescopic block distribution of the present invention; Fig.10 It is a structural schematic diagram of the drainage component of the present invention; Fig.11 It is a schematic structural diagram of the airflow component of the present invention.

[0015] Reference numerals: 1, housing; 11, protective door; 12. heat reflection component; 121. reflection cover; 122. reflection oblique sheet; 2. Withstand voltage tester; 3. Temperature control mechanism; 31. Heating assembly; 311. Insulation box; 312. Heating tube; 313. Heat sink; 3131. Heat sink ball; 3132. Heat sink strip; 314. Multi-hole partition plate; 315. Telescopic block; 32. Air flow transmission assembly; 321. Transmission tube; 322. Solenoid bypass valve; 323. Input tube; 33. Diverter cover; 331. Heat dissipation hole; 34. Drainage assembly; 341. Drainage barrel; 342. Drainage groove; 343. Eddy current fan; 35. Air flow assembly; 351. Connecting plate; 352. Spiral fan; 353. Diverter block; 3531. Diverter groove; 3532. Diverter hole; 354. Diverter rod; 36. Tee pipe; 37. Connecting pipe; 4. Temperature detector; 5. Cable harness; 6. Gas conveyor; 7. Indicator light. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0017] The present invention will be further described below in conjunction with the embodiments.

[0018] Example: Refer to Figures 1 to 11 , a withstand voltage test device for a pre-buried cable harness, comprising; A housing 1, one side of the housing 1 having an opening, a pair of protective doors 11 being rotatably mounted on the opening of the housing 1, and a heat reflecting component 12 for reflecting heat being arranged on a side of each pair of protective doors 11 facing the housing 1; The temperature control mechanism 3 includes four heating components 31 arranged at the four corners of the upper and lower inner walls of the shell 1, and the side of each heating component 31 is provided with an airflow transmission component 32 for conveying gas. The side of the heating component 31 away from the inner wall of the shell 1 is provided with a diverter cover 33 for collecting heat. The two sides of the diverter cover 33 are curved surfaces, and the side of the diverter cover 33 away from the heating component 31 is a plane. The curved surfaces on both sides of the diverter cover 33 are linearly arrayed with multiple groups of heat dissipation holes 331, and each group of heat dissipation holes 331 has at least three. The plane linear array of the diverter cover 33 is provided with multiple diversion components 34 for transmitting and guiding airflow, and each diversion component 34 is provided with an airflow component 35 for releasing heat at one end away from the diverter cover 33.

[0019] By utilizing the airflow transmission component 32 in the temperature control mechanism 3 to input different amounts of gas with a heat-insulating effect into the heating component 31, different heating effects of the heating component 31 on different positions of the cable harness 5 can be achieved, and the drainage component 34 and the airflow component 35 can transfer and convert the heat at different positions of the heating component 31 into spiral airflow, thereby achieving the heat at different positions of the heating component 31, which can fully act on the cable harness 5 at the corresponding position.

[0020] Reference Figure 1 to Figure 2 The heat reflection component 12 includes a plurality of reflection covers 121 fixedly connected to the side of the protective door 11 in a linear array, and the interior of each reflection cover 121 is fixedly connected to a plurality of reflection oblique plates 122 in opposite directions in a linear array, and the reflection oblique plates 122 in two adjacent directions sequentially form a reflection cavity.

[0021] By utilizing the reflective cover 121 and the reflective bevel 122 in the heat reflective component 12, the heat released by the heating component 31 can be reflected, thereby reducing the loss of heat released by the heating component 31 and enhancing the heating effect of the cable harness 5 at the corresponding position of the heating component 31.

[0022] Reference Figures 6 to 9 The heating component 31 includes a heat insulation box 311 fixedly connected to the inner wall of the shell 1, a heating tube 312 is fixedly connected to the inner bottom of the heat insulation box 311, a heat sink 313 is fixedly connected to the inner middle of the heat insulation box 311, a side of the heat insulation plate 313 away from the heating tube 312 and a plurality of heat dissipation bars 3132 are fixedly connected in a linear array along the length direction of the heat dissipation plate 313, two adjacent heat dissipation bars 3132 constitute a heat dissipation area in the heat dissipation plate 313, the heat dissipation area linear array of the heat dissipation plate 313 has a plurality of heat dissipation balls 3131 fixedly connected along the width direction of the heat dissipation plate 313, a plurality of porous partition plates 314 are fixedly connected in a linear array at the inner top of the heat insulation box 311, each adjacent porous partition plate 314 and both sides of the heat insulation box 311 together constitute an installation area at the inner top of the heat insulation box 311, and a telescopic space block 315 is provided in the installation area of ​​the heat insulation box 311.

[0023] The heating tube 312 in the heating component 31 is used to provide a heat source for the heating component 31, and the heat sink 313 can evenly transfer the heat generated by the heating tube 312, so as to avoid the accumulation of heat generated by the heating tube 312 in the insulation box 311, which in turn causes a large error in the heat provided by the heating tube 312 to different positions of the heating component 31. The telescopic blocks 315 at different positions in the heating component 31 have different heat transfer efficiencies by inputting different amounts of gas with uniform insulation effect into the interior thereof.

[0024] Reference Figures 5 to 9 The air flow transmission component 32 includes a transmission pipe 321 fixedly connected to the outside of the heat insulation box 311. The input ends of the transmission pipes 321 on the same side are commonly connected with a three-way pipe 36. The three-way pipe 36 has two input ends and one output end, and the two input ends are respectively connected with the transmission pipe 321 on the same side of the shell 1. The output end of the three-way pipe 36 is fixedly connected with a connecting pipe 37. The end of the connecting pipe 37 away from the three-way pipe 36 is fixedly connected with a gas conveyor 6. The gas conveyor 6 is arranged on the outside of the shell 1. The body of the transmission pipe 321 is inlaid with multiple electromagnetic bypass valves 322, and the positions and numbers of the electromagnetic bypass valves 322 correspond to the installation area of ​​the heat insulation box 311. The electromagnetic bypass valve 322 has two input ends and one output end, and the two input ends of the electromagnetic bypass valve 322 are connected to the transmission pipe 321, and the output end of the electromagnetic bypass valve 322 is fixedly connected to the input pipe 323. The end of the input pipe 323 away from the electromagnetic bypass valve 322 passes through the heat insulation box 311 and is connected to the telescopic empty block 315 at the corresponding position.

[0025] By connecting the transmission pipe 321 in the air flow transmission component 32 with the gas conveyor 6, the gas stored in the gas conveyor 6 (the gas stored in the gas conveyor 6 is a gas with a heat-insulating effect) can be transmitted to the heating component 31 and the telescopic empty blocks 315 at different positions, and the electromagnetic bypass valve 322 can control the gas transmission of the telescopic empty blocks 315 at different positions, thereby achieving the heat transfer efficiency of the telescopic empty blocks 315 at the same position.

[0026] Reference Figure 6 , Fig.11 The drainage assembly 34 includes a drainage barrel 341 fixedly connected to the plane of the diverter cover 33, a plurality of drainage grooves 342 are formed in an annular array on the inner circumference of the drainage barrel 341, and a vortex fan 343 is rotatably connected to the inner bottom of the drainage barrel 341.

[0027] The airflow component 35 includes a connecting plate 351 fixedly connected to one end of the drainage barrel 341, and a plurality of diverter blocks 353 and a plurality of diverter rods 354 distributed in a cross are fixedly connected in an annular array on the inner circumference of the connecting plate 351 near the drainage barrel 341, and the diverter blocks 353 and the diverter rods 354 are alternately arranged in an annular array on the inner circumference of the connecting plate 351, and each diverter block 353 is provided with a diverter groove 3531 at the center position of the side facing the drainage barrel 341, and a plurality of diverter holes 3532 connected to the diverter groove 3531 are provided on both symmetrical sides of the diverter block 353, and each diverter block 353 and the diverter rod 354 are fixedly connected to a support plate at one end away from the connecting plate 351, and a side of the support plate away from the drainage barrel 341 is rotatably connected to a spiral fan member 352.

[0028] The drainage component 34 can be used to guide the heat transferred by the telescopic space block 315, so that the telescopic space block 315 at the corresponding position can transfer the corresponding heat to the corresponding position of the cable harness 5, and the airflow component 35 can further transmit and convert the heat guided by the drainage component 34, thereby converting the heat guided by the drainage component 34 into spiral airflow-type heat, thereby achieving the full effect of heat on the cable harness 5.

[0029] Reference Figure 3 to Figure 4 A cable harness 5 is arranged in the inner middle part of the outer shell 1, a plurality of temperature detectors 4 are arranged inside the outer shell 1, and the number of the temperature detectors 4 corresponds to the number of the telescopic empty blocks 315, a withstand voltage tester 2 is arranged at the center position of the top of the outer shell 1, and the positive and negative poles of the withstand voltage tester 2 are electrically connected to the two ends of the cable harness 5 respectively, and a plurality of indicator lights 7 corresponding to the number of the temperature detectors 4 are arranged on the top of the outer shell 1, and each indicator light 7 is electrically connected to a temperature detector 4.

[0030] The temperature detectors 4 distributed at different positions of the housing 1 are used to detect the temperature changes of the cable harness 5 at different positions in the housing 1 at all times and display them through the indicator lights 7, so that the staff can judge the temperature changes at different positions of the cable harness 5 easily.

[0031] The operating principle of this embodiment is as follows: First, open the protective door 11 in the housing 1, place the cable harness 5 to be tested in the housing 1, and then connect the two ends of the cable harness 5 to the positive and negative poles of the withstand voltage tester 2 respectively, then close the protective door 11 again, and then start the device through the controller (the controller is an existing device, so it is not drawn in the figure). As the device starts, the heating tube 312 in the heat insulation box 311 in the heating component 31 begins to release heat (the heating tube 312 is connected to the power supply by default). As the heating tube 312 begins to release heat, the heat will first be collected at the bottom of the heat insulation box 311, and then the heat sink 313 is placed to evenly transfer the heat collected at the bottom of the heat insulation box 311 to various positions in the middle of the heat insulation box 311, and the heat sink 313 first passes through the heat dissipation strip 3 The uniform distribution of 132 can effectively conduct heat from the heat source to the entire surface of the heat sink 313, avoiding local overheating. This uniform distribution helps to ensure that the temperature of the heat sink 313 is uniform, thereby improving the uniform distribution in various positions in the middle of the thermal insulation box 311. At the same time, a heat sink ball 3131 is set in the area formed by adjacent heat sink strips 3132. The presence of the heat sink ball 3131 increases the surface area of ​​the heat sink 313, optimizes the heat conduction path, and improves the efficiency of the heat sink 313 in uniformly dissipating heat to the middle of the thermal insulation box 311. The thermal insulation box 311 is divided into multiple parts by a porous partition plate 314, and a telescopic empty block 315 is set in each part (the telescopic empty block 315 in each part corresponds to a different position of the cable harness 5).

[0032] Among them, as the heating component 31 is started, the gas conveyor 6 is also started synchronously, and the gas conveyor 6 stores a gas with a heat-insulating effect, such as hydrogen and nitrogen, and transmits it to the telescopic empty blocks 315 at different positions through the transmission pipe 321 in the airflow transmission component 32, so that the telescopic empty blocks 315 that originally have no heat-insulating effect have a heat-insulating effect after being filled with gas. The more the amount of heat-insulating gas filled into the telescopic empty block 315, the larger the expansion volume of the telescopic empty block 315, and the better the heat-insulating effect of the telescopic empty block 315. Conversely, the smaller the amount of heat-insulating gas filled into the telescopic empty block 315, the better the heat-insulating effect of the telescopic empty block 315. The smaller the expansion volume of the block 315, the worse the thermal insulation effect of the telescopic empty block 315. In order to control the transmission pipe 321 to control the amount of gas filled into the telescopic empty blocks 315 at different positions, an electromagnetic bypass valve 322 is provided in the telescopic empty blocks 315 transmitted to different positions by the transmission pipe 321. The electromagnetic bypass valve 322 is connected to the controller. Through the controller, the electromagnetic bypass valve 322 corresponding to the telescopic empty block 315 can control the input amount of gas in the telescopic empty block 315 according to actual needs, thereby achieving different heat transfer efficiencies of the telescopic empty blocks 315 at different positions, thereby realizing heating of different positions of the cable harness 5.

[0033] In order to allow the heat transferred by the telescopic block 315 to fully act on the cable harness 5, a diverter cover 33 is set on the top of the telescopic block 315, and the diverter cover 33 can divide the heat transferred by the telescopic block 315 into two parts for transmission, one part of which is discharged through the heat dissipation holes 331 on the curved surfaces on both sides of the diverter cover 33 to achieve preheating treatment in the shell 1, thereby avoiding sudden temperature rise from causing additional damage to the cable harness 5, thereby affecting the detection result of the withstand voltage tester 2, and the other part directly acts on the corresponding cable harness 5 through the drainage component 34 and the airflow component 35.

[0034] The heat transferred from the other part of the flow divider 33 will first pass through the drainage barrel 341 in the drainage component 34, and when the heat enters the drainage barrel 341, the heat will flow in the drainage barrel 341 along the drainage groove 342. As the heat flows along the drainage groove 342, the heat will drive the vortex fan 343 to rotate, and the airflow generated by the rotation of the vortex fan 343 can increase the amount of heat entering the drainage barrel 341, thereby increasing the heat transmission speed in the drainage barrel 341. After passing through the drainage component 34, the heat then enters the airflow component 35. When the heat enters the airflow component 35, the heat will first The shunt block 353 in the connected disk 351 is shunted with the shunt rod 354, and the shunt block 353 can make the heat enter from the shunt slot 3531 and be discharged from the shunt hole 3532, so as to avoid the heat from gathering together, thereby affecting the subsequent demand for uniform heating of the cable harness 5 at the corresponding position. The shunted heat will act on the spiral fan 352, causing the spiral fan 352 to rotate. The rotating spiral fan 352 can convert the transferred heat into a spiral hot air flow, because when the heat acts on the spiral fan 352, it will cause the fan to rotate, because the heat causes the expansion and flow of the air. The spiral fan 352 converts the heat into a spiral hot air flow by rotating, and the spiral hot air flow can be evenly distributed around the cable harness 5 during the rotation process. Compared with the traditional straight air flow, the spiral air flow can cover a wider area, ensuring that the heat is evenly transferred to every part of the cable, thereby achieving heating of the corresponding position of the cable harness 5.

[0035] Among them, when the temperature control mechanism 3 completes the different heating of different positions of the cable harness 5, the voltage tester 2 starts to detect the insulation performance of the cable under different temperatures at various positions of the cable harness 5. In order to help the staff determine whether the temperature control mechanism 3 is working normally, a temperature detector 4 is arranged in the outer shell 1 at a position corresponding to the telescopic empty block 315, and the heat transfer status in the telescopic empty block 315 at each position is displayed through the indicator light 7 (the indicator light 7 has two colors: green indicates normal working status, and red indicates abnormal working status).

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A withstand voltage test device for a pre-buried cable harness, characterized in that: include: A housing (1), wherein one side of the housing (1) has an opening, a pair of protective doors (11) are rotatably mounted on the opening of the housing (1), and a heat reflection component (12) for reflecting heat is arranged on a side of each pair of protective doors (11) facing the housing (1); A temperature control mechanism (3), the temperature control mechanism (3) comprising four heating components (31) arranged at four corners of the upper and lower inner walls of the housing (1), the side of each heating component (31) being provided with an airflow transmission component (32) for conveying gas, a side of the heating component (31) away from the inner wall of the housing (1) being provided with a flow divider (33) for collecting heat, the two sides of the flow divider (33) being arcuate surfaces, and the side of the flow divider (33) away from the heating component (31) being a plane, the arcuate surfaces on both sides of the flow divider (33) being provided with a plurality of groups of heat dissipation holes (331) in a linear array, each group of the heat dissipation holes (331) being at least three, the plane linear array of the flow divider (33) being provided with a plurality of flow guide components (34) for transmitting and guiding airflow, and the end of each flow guide component (34) away from the flow divider (33) being provided with an airflow component (35) for releasing heat.

2. A withstand voltage test device for a pre-buried cable harness according to claim 1, characterized in that: The heat reflection assembly (12) comprises a plurality of reflection covers (121) fixedly connected in a linear array to the side of the protective door (11), the interior of each of the reflection covers (121) being fixedly connected in a linear array and arranged in sequence in opposite directions, and the reflection oblique plates (122) in two adjacent directions are sequentially formed into a reflection cavity.

3. A withstand voltage test device for a pre-buried cable harness according to claim 1, characterized in that: The heating assembly (31) comprises a heat-insulating box (311) fixedly connected to the inner wall of the outer shell (1); a heating tube (312) is fixedly connected to the inner bottom of the heat-insulating box (311); a heat-dissipating plate (313) is fixedly connected to the inner middle of the heat-insulating box (311); a plurality of heat-dissipating strips (3132) are fixedly connected to the heat-dissipating plate (313) on a side of the heat-dissipating plate (313) away from the heating tube (312) and in a linear array along the length direction of the heat-dissipating plate (313); two adjacent heat-dissipating strips (3132) are connected to the heat-dissipating plate (3132); 13) forms a heat dissipation zone, the heat dissipation zone linear array of the heat dissipation plate (313) has a plurality of heat dissipation balls (3131) fixedly connected along the width direction of the heat dissipation plate (313), the inner top linear array of the heat insulation box (311) has a plurality of porous partition plates (314) fixedly connected, each adjacent porous partition plate (314) and both sides of the heat insulation box (311) together form an installation zone at the inner top of the heat insulation box (311), and the installation zone of the heat insulation box (311) is provided with a telescopic space block (315).

4. A withstand voltage test device for a pre-buried cable harness according to claim 1, characterized in that: The air flow transmission component (32) comprises a transmission pipe (321) fixedly connected to the outside of the heat insulation box (311); the input ends of the transmission pipes (321) on the same side are commonly connected to a three-way pipe (36); the three-way pipe (36) has two input ends and one output end, and the two input ends are respectively connected to the transmission pipe (321) on the same side of the housing (1); the output end of the three-way pipe (36) is fixedly connected to a connecting pipe (37); one end of the connecting pipe (37) away from the three-way pipe (36) is fixedly connected to a gas conveyor (6); the gas conveyor (6) is arranged on the housing (1) On the outside, the tube body of the transmission tube (321) is inlaid with a plurality of electromagnetic bypass valves (322), and the positions and numbers of the electromagnetic bypass valves (322) correspond to the installation area of ​​the heat insulation box (311), the electromagnetic bypass valve (322) has two input ends and one output end, and the two input ends of the electromagnetic bypass valve (322) are in communication with the transmission tube (321), and the output end of the electromagnetic bypass valve (322) is fixedly connected with an input tube (323), and one end of the input tube (323) away from the electromagnetic bypass valve (322) passes through the heat insulation box (311) and is in communication with a telescopic empty block (315) at a corresponding position.

5. The withstand voltage test device for a pre-buried cable harness according to claim 1, characterized in that: The drainage assembly (34) comprises a drainage barrel (341) fixedly connected to the plane of the diverter cover (33); a plurality of drainage grooves (342) are provided in an annular array on the inner circumference of the drainage barrel (341); and a vortex fan (343) is rotatably connected to the inner bottom of the drainage barrel (341).

6. A withstand voltage test device for a pre-buried cable harness according to claim 1, characterized in that: The airflow component (35) comprises a connection plate (351) fixedly connected to one end of the drainage barrel (341); a plurality of diverter blocks (353) and a plurality of diverter rods (354) are fixedly connected in a cross-distributed annular array on the inner circumference of the connection plate (351) close to the drainage barrel (341); the diverter blocks (353) and the diverter rods (354) are alternately arranged in annular array on the inner circumference of the connection plate (351); a diverter groove (3531) is provided at the center position of the side of each diverter block (353) facing the drainage barrel (341); a plurality of diverter holes (3532) connected to the diverter groove (3531) are provided on both symmetrical sides of the diverter block (353); one end of each diverter block (353) and the diverter rod (354) away from the connection plate (351) is fixedly connected to a support plate; and a side of the support plate away from the drainage barrel (341) is rotatably connected to a spiral fan member (352).

7. A withstand voltage test device for a pre-buried cable harness according to claim 1, characterized in that: A cable harness (5) is arranged in the middle of the inner part of the shell (1), a plurality of temperature detectors (4) are arranged inside the shell (1), and the number of the temperature detectors (4) corresponds to the number of the telescopic blocks (315), a withstand voltage tester (2) is arranged at the center of the top of the shell (1), and the positive and negative electrodes of the withstand voltage tester (2) are electrically connected to the two ends of the cable harness (5), respectively, and a plurality of indicator lights (7) corresponding to the number of the temperature detectors (4) are arranged on the top of the shell (1), and each indicator light (7) is electrically connected to a temperature detector (4).

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