Insulation characteristic testing equipment in high-temperature environment
By using a double-layer insulation design and automated control in insulation characteristic testing equipment at high temperatures, the problems of inaccurate temperature measurement and leakage current at high temperatures are solved, achieving high-precision and high-efficiency insulation characteristic testing, which is suitable for testing a variety of materials.
Patent Information
- Application Number
- CN202423259953.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing simple combination of high-temperature devices and insulation testing devices is inaccurate in high-temperature environments and cannot accurately reflect the insulation characteristics of materials. Furthermore, the thermoelectric effect leads to increased leakage current, affecting the measurement results.
The insulation characteristic testing equipment adopted in high-temperature environments includes an insulated chamber, high-temperature components, insulation testing components, and a controller. The double-layer insulation design of the high-temperature electrical penetration component isolates the thermoelectric effect, and the combination of heating components and controller enables automated testing to meet the testing needs of various materials.
It reduces the impact of thermoelectric effects on measurement results, improves testing accuracy and efficiency, meets the testing needs of various materials, and enhances the safety performance of electrical equipment.
Smart Images
Figure CN223770318U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrical insulation test technical field especially relates to a kind of insulation characteristic test equipment under high temperature environment. BACKGROUND
[0002] In the field of electrical insulation test technology, insulation characteristics is one of the important indicators to evaluate material performance. Especially under high temperature environment, the insulation characteristics of materials may change significantly, which has important influence on the safe operation of electrical equipment. Therefore, it is necessary to accurately measure the insulation characteristics of materials under high temperature. At the same time, with the development of automatic test system, in order to improve the test efficiency and accuracy, the demand for automatic insulation characteristic test under different high temperature is also increasing.
[0003] The existing measurement method is mainly through the combination of high temperature device and insulation test device to measure the insulation characteristics of materials under high temperature. High temperature device is used to provide different high temperature environment, while insulation test device is used to measure the insulation characteristics of materials under the set high temperature. However, the simple combination of existing high temperature device and insulation test device usually cannot accurately measure the temperature, cannot accurately reflect the insulation characteristics of materials under high temperature, and due to the thermoelectric effect of materials, the leakage current increases, which affects the measurement results. SUMMARY
[0004] The utility model aims to provide a kind of insulation characteristic test equipment under high temperature environment, to solve the problems existing in the prior art above, can reduce the influence of thermoelectric effect on measurement results, improve test accuracy, meet the test demand of a variety of materials.
[0005] To achieve the above purpose, the utility model provides the following scheme:
[0006] This utility model provides an insulation characteristic testing device under high temperature conditions, including an insulated chamber, a high-temperature component, an insulation testing component, and a controller. The insulated chamber is used to place test samples. The high-temperature component includes a heating element and a thermocouple. The heating element is used to heat the insulated chamber, and the thermocouple is placed inside the insulated chamber to detect the temperature inside the chamber. The insulation testing component includes a high-temperature electrical penetration component and an insulation tester. The high-temperature electrical penetration component is fixedly inserted through the side wall of the insulated chamber. The high-temperature electrical penetration component includes a shell, a penetration core wire, a penetration conductor, a first insulation layer, and a second insulation layer. The first insulating layer is fixedly sleeved outside the core wire of the through-piece, the second insulating layer is fixedly sleeved outside the first insulating layer, the through-piece conductor is fixed between the second insulating layer and the first insulating layer, the shell is fixedly sleeved outside the second insulating layer, one end of the through-piece core wire is electrically connected to the core wire of the test sample, and the other end is electrically connected to the insulation tester, one end of the through-piece conductor is electrically connected to the shell of the test sample, and the other end is electrically connected to the insulation tester, the insulation tester and the high-temperature component are both signal-connected to the controller, and the controller can adjust the heating temperature of the high-temperature component.
[0007] Preferably, the shell wall of the insulated box is filled with heat insulation material, and the thickness of the heat insulation material is 1-3cm.
[0008] Preferably, the heat insulation material is porous vacuum silicon.
[0009] Preferably, the insulated box has a placement rack inside, and the top surface of the top plate of the placement rack is provided with an insulating pad, on which the test sample is placed.
[0010] Preferably, there is a gap between the top plate of the placement rack and the bottom surface of the insulation box, and there are multiple thermocouples, which are evenly distributed in the gap, and the distance between the thermocouples and the top plate of the placement rack is 3 to 5 cm.
[0011] Preferably, the heating element includes multiple heating wires, a programmable switch, and a power supply. Each heating wire is fixed in the bottom plate of the insulation box, and each heating wire is connected to the programmable switch. The programmable switch can individually control the opening and closing of each heating wire and the heating power. Each heating wire and the programmable switch are connected to the power supply.
[0012] Preferably, the heating wire is made of nickel-chromium alloy.
[0013] Preferably, the diameter of the heating wire is 0.5 to 1 mm.
[0014] Preferably, the core wire of the through-piece is fixedly connected to the core wire of the test sample by spot welding, and the conductor of the through-piece is fixedly connected to the outer shell of the test sample by spot welding.
[0015] Preferably, the first insulating layer and the second insulating layer are made of the same material.
[0016] The present invention achieves the following technical advantages over the prior art:
[0017] This invention provides an insulation characteristic testing device for high-temperature environments. The core wire of the high-temperature electrical penetration component is isolated from the conductor by a first insulation layer, and the conductor is further isolated from the outer shell by a second insulation layer. This effectively isolates the influence of thermoelectric leakage current on the measurement, improving test accuracy. A heating element heats the interior of the insulation chamber, enabling insulation characteristic testing of samples at high temperatures. The controller controls the heating temperature of the heating element, allowing insulation characteristic testing of various samples under different high-temperature environments, meeting the needs of various materials and testing requirements. The controller can automatically perform insulation characteristic tests at different high temperatures based on preset parameters, reducing manual operation and improving testing efficiency and accuracy. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the insulation characteristic testing equipment under high temperature conditions;
[0020] Figure 2 This is a structural schematic diagram of a high-temperature electrical penetration component;
[0021] Figure 3 This is a schematic diagram showing the distribution of multiple heating wires on the bottom plate of the insulated box.
[0022] In the diagram: 1-Test sample; 2-Heating wire; 3-Insulation box; 4-High temperature electrical penetration component; 41-Penetration component core wire; 42-Penetration component conductor; 43-First insulation layer; 44-Second insulation layer; 45-Outer shell; 5-Thermocouple; 6-Programmable switch; 7-Insulation tester; 8-Controller; 9-Insulation pad. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] The purpose of this invention is to provide an insulation characteristic testing device under high temperature conditions to solve the problems existing in the prior art, reduce the influence of thermoelectric effect on measurement results, improve test accuracy, and meet the testing needs of various materials.
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] This utility model provides an insulation characteristic testing device under high temperature conditions, such as... Figures 1-2As shown, the device includes an insulated chamber 3, a high-temperature component, an insulation testing component, and a controller 8. The insulated chamber 3 is used to place the test sample 1. The high-temperature component includes a heating element and a thermocouple 5. The heating element is used to heat the inside of the insulated chamber 3, and the thermocouple 5 is placed inside the insulated chamber 3 to detect the temperature inside the insulated chamber 3. The insulation testing component includes a high-temperature electrical penetration 4 and an insulation tester 7. The high-temperature electrical penetration 4 is fixedly inserted through the side wall of the insulated chamber 3. The high-temperature electrical penetration 4 includes a shell 45, a penetration core wire 41, a penetration conductor 42, a first insulation layer 43, and a second insulation layer 44. The first insulation layer 43... 3. The core wire 41 of the through-piece is fixedly sleeved outside the core wire 41. The second insulation layer 44 is fixedly sleeved outside the first insulation layer 43. The conductor 42 of the through-piece is fixed between the second insulation layer 44 and the first insulation layer 43. The housing 45 is fixedly sleeved outside the second insulation layer 44. One end of the core wire 41 of the through-piece is electrically connected to the core wire of the test sample 1, and the other end is electrically connected to the insulation tester 7. One end of the conductor 42 of the through-piece is electrically connected to the housing of the test sample 1, and the other end is electrically connected to the insulation tester 7. The insulation tester 7 and the high-temperature component are both connected to the controller 8. The controller 8 can adjust the heating temperature of the high-temperature component. The core wire 41 and conductor 42 of the high-temperature electrical penetration component 4 are isolated by a first insulation layer 43, and the conductor 42 is further isolated from the outer shell 45 by a second insulation layer 44. This can isolate the influence of thermoelectric leakage current on the measurement, improve the accuracy of the test, and help improve the safety performance of electrical equipment. The heating component heats the inside of the insulation box 3, enabling insulation characteristic testing of the test sample 1 in a high-temperature environment. The controller 8 can control the heating temperature of the heating component, enabling insulation characteristic testing of various test samples 1 in different high-temperature environments, meeting the needs of various types of materials and tests. The controller 8 can automatically perform insulation characteristic testing at different high temperatures according to preset parameters, reducing manual operation and improving testing efficiency and accuracy.
[0027] In a further preferred embodiment of this utility model, the shell wall of the insulated box 3 is filled with heat insulation material, and the thickness of the heat insulation material is 1-3cm.
[0028] In a further preferred embodiment of this invention, the heat insulation material is porous vacuum silicon.
[0029] In a further preferred embodiment of this utility model, the insulated box 3 has a placement rack inside, and an insulating pad 9 is provided on the top surface of the top plate of the placement rack. The test sample 1 is placed on the insulating pad 9, and the insulating pad 9 is in contact with the outer shell of the test sample 1. Preferably, the placement rack is a cantilever rack.
[0030] In a further preferred embodiment of this invention, a gap exists between the top plate of the placement rack and the bottom surface of the insulation box 3. Multiple thermocouples 5 are evenly distributed within this gap, with each thermocouple 5 positioned 3-5 cm away from the top plate of the placement rack. The heating element enables the highest test temperature inside the insulation box 3 to reach 600 degrees Celsius. Multiple temperature measurement points ensure accurate temperature measurement, meeting the needs of various materials and testing requirements. Preferably, nine thermocouples 5 are arranged in a 3x3 configuration to monitor the temperature change within the heating zone between the top plate of the placement rack and the bottom surface of the insulation box 3, and to monitor the thermal uniformity of the heating zone. Each thermocouple 5 is connected to a controller 8, which receives the temperature data monitored by the thermocouples 5 in real time.
[0031] A further preferred embodiment of this utility model is, as follows: Figure 3 As shown, the heating element includes multiple heating wires 2, a programmable switch 6, and a power supply. Each heating wire 2 is fixed in the bottom plate of the insulation box 3, and each heating wire 2 is connected to the programmable switch 6. The programmable switch 6 can independently control the on / off state and heating power of each heating wire 2. Both the heating wire 2 and the programmable switch 6 are connected to the power supply. For different heating positions, a zoned approach is used to control the circuit of the heating wire in each zone, which is flexible, simple in structure, and low in cost. The programmable switch 6 is signal-connected to the controller 8, which can control the programmable switch 6 to adjust the on / off state and heating power of each heating wire 2 based on the received temperature data.
[0032] In a further preferred embodiment of this utility model, the heating wire 2 is made of nickel-chromium alloy.
[0033] In a further preferred embodiment of this utility model, the diameter of the heating wire 2 is 0.5 to 1 mm.
[0034] In a further preferred embodiment of this utility model, the core wire 41 of the through-piece is fixedly connected to the core wire of the test sample 1 by spot welding, and the conductor 42 of the through-piece is fixedly connected to the outer shell of the test sample 1 by spot welding.
[0035] In a further preferred embodiment of this utility model, the first insulating layer 43 and the second insulating layer 44 are made of the same material.
[0036] In a further preferred embodiment of this invention, the controller 8 also features a touchscreen, allowing operators to set test parameters, monitor the test process, and view test results. In actual operation, the operator first sets the test parameters via the touchscreen, then starts the test program. The heating component automatically performs zone heating according to the preset parameters. The controller 8 receives temperature data monitored by the thermocouple 5 and insulation information transmitted by the insulation test component in real time, obtaining the corresponding insulation performance at different high temperatures. For example, tests can be set at 200°C, 400°C, and 600°C, with each test lasting 30 minutes after the set temperature is reached and maintained stably. The insulation test voltage is 100VDC. After the test, the equipment automatically provides the test results and stores the test data in the data processing system. The operator can view the test results via the touchscreen of the controller 8 or perform more in-depth data analysis through the data processing system.
[0037] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. An insulation characteristic testing device under high temperature conditions, characterized in that: The application relates to a high-temperature insulation test device, which comprises a heat preservation box, a high-temperature assembly, an insulation test assembly and a controller, the heat preservation box is used for placing a test sample, the high-temperature assembly comprises a heating element and a thermocouple, the heating element is used for heating in the heat preservation box, the thermocouple is arranged in the heat preservation box and is used for detecting the temperature in the heat preservation box, the insulation test assembly comprises a high-temperature electrical penetrating element and an insulation tester, the high-temperature electrical penetrating element penetrates through the side wall of the heat preservation box, the high-temperature electrical penetrating element comprises a shell, a penetrating element core wire, a penetrating element conductor, a first insulation layer and a second insulation layer, the first insulation layer is fixedly sleeved outside the penetrating element core wire, the second insulation layer is fixedly sleeved outside the first insulation layer, the penetrating element conductor is fixed between the second insulation layer and the first insulation layer, the shell is fixedly sleeved outside the second insulation layer, one end of the penetrating element core wire is electrically connected with a core wire of the test sample, and the other end is electrically connected with the insulation tester, one end of the penetrating element conductor is electrically connected with a shell of the test sample, and the other end is electrically connected with the insulation tester, the insulation tester and the high-temperature assembly are signal-connected with the controller, and the controller can adjust the heating temperature of the high-temperature assembly.
2. The test apparatus of claim 1, wherein: The shell wall of the heat preservation box is filled with a heat insulation material, and the filling thickness of the heat insulation material is 1-3 cm.
3. The test apparatus of claim 2, wherein: The heat insulation material is porous vacuum silicon.
4. The test apparatus of claim 1, wherein: The heat preservation box is provided with a placing rack, and the top surface of the top plate of the placing rack is provided with an insulation pad, and the test sample is placed on the insulation pad.
5. The test apparatus of claim 4, wherein: The top plate of the placing rack and the bottom surface of the heat preservation box are provided with a gap, a plurality of thermocouples are arranged in the gap, and the distance between the thermocouples and the top plate of the placing rack is 3-5 cm.
6. The test apparatus of claim 1, wherein: The heating element comprises a plurality of heating wires, a program-controlled switch and a power supply, each heating wire is fixed in the bottom plate of the heat preservation box, each heating wire is connected with the program-controlled switch, the program-controlled switch can separately control the opening and closing and the heating power of each heating wire, and each heating wire and the program-controlled switch are connected with the power supply.
7. The test apparatus of claim 6, wherein: The material of the heating wire is nickel-chromium alloy.
8. The test apparatus of claim 7, wherein: The wire diameter of the heating wire is 0.5-1 mm.
9. The test apparatus of claim 1, wherein: The penetrating element core wire and the core wire of the test sample are fixedly connected through spot welding, and the penetrating element conductor and the shell of the test sample are fixedly connected through spot welding.
10. The test apparatus of claim 1, wherein: The materials of the first insulation layer and the second insulation layer are the same.