Visual sealing insulation testing device and method for inflatable looped network switch equipment

Abstract

The invention discloses a visual sealing insulation testing device and method for inflatable looped network switch equipment, and the device comprises a pedestal, the top of the pedestal is provided with a plurality of insulation pillars, and a containing space is formed among the plurality of insulation pillars; the tested object fixing plate is arranged on the accommodating space, and the end part of the tested object fixing plate is connected with a grounding terminal; the insulating partition plates are arranged in the accommodating space so as to divide the accommodating space into a plurality of accommodating areas; the dehumidification unit and the micro-water online monitoring unit are detachably arranged in the accommodating area; one end of the sealing assembly is used for being connected with the tested object, the other end of the sealing assembly is connected with a visual assembly, and the visual assembly abuts against the tested object fixing plate. Through the dehumidification unit and the micro-water online monitoring unit, the influence of air humidity on the insulation performance of the tested object is effectively eliminated; the influence of insufficient gas pressure on the insulation test is eliminated by using the sealing assembly; through the visual assembly, the discharge position can be accurately positioned in time, and a basis is provided for judgment of the insulation performance of a tested object.

Description

Technical Field

[0001] This invention belongs to the field of insulation testing technology for ring main units, specifically relating to a visual sealed insulation testing device and method for gas-filled ring main switchgear. Background Technology

[0002] In power systems, ring main units (RNBs) play an indispensable role as key equipment in power distribution systems such as urban power grids, public facilities, and transportation, undertaking important tasks such as distributing electrical energy, controlling circuit switching, and protecting the safe and stable operation of the power system. With continuous technological advancements, gas-insulated ring main units (GNUs) have gradually emerged as mainstream products in the industry due to their significant advantages, such as compact structure, stable performance, and less susceptibility to environmental factors, and have been widely used in various power distribution scenarios.

[0003] For gas-insulated ring main units (RMMs), insulation performance is one of the most critical technical indicators, directly affecting the safe and reliable operation of the equipment and the stability of the entire power system. Problems with insulation performance can easily lead to faults such as discharge and short circuits, causing not only equipment damage and disruption to normal power supply but also potential safety accidents, posing a serious threat to people's lives and property. Therefore, accurately and effectively testing the insulation performance of gas-insulated RMMs is a crucial step in ensuring product quality and guaranteeing the safe operation of the power system.

[0004] However, since the conductive circuits of inflatable ring main units are all installed in a sealed space, this poses a great challenge to insulation performance testing. Currently, the common insulation testing methods are mainly two types: overall sealed testing and open gas chamber testing, but both of these methods have obvious limitations.

[0005] Overall sealing testing involves conducting insulation tests on a product under actual usage conditions. This testing method can simulate the actual operating conditions of the product to the greatest extent possible, and theoretically can reflect the insulation performance of the product in actual use more realistically. However, in actual testing, once a discharge phenomenon occurs, it is difficult to accurately locate the actual discharge location because the product is in a sealed state. Accurately determining the discharge location is crucial for in-depth analysis of the causes of insulation failures and targeted optimization and improvement of product performance. If the discharge location cannot be accurately located, it is like groping in the dark, making it difficult to find the root cause of the problem, which greatly hinders the improvement and optimization of product performance and increases the cost and time of research and development.

[0006] The gas chamber open test involves opening the sealed gas chamber to perform the insulation test. The advantage of this test method is that when the product discharges, the specific location of the discharge can be directly observed, thereby achieving precise positioning of the discharge location. This provides convenient conditions for in-depth analysis of insulation faults and identification of potential design or manufacturing defects, and helps R&D personnel to make targeted improvements and optimizations.

[0007] However, open-box testing also has serious problems. After the gas box is opened, the environment in which the product is located differs significantly from the actual operating environment. In actual operation, environmental factors such as gas pressure and air humidity inside the gas-filled ring main unit have a significant impact on insulation performance. However, during open-box testing, these key environmental factors cannot be effectively controlled and simulated. This means that the test results may be affected by factors such as gas pressure and air humidity, and thus cannot accurately reflect the true insulation performance of the product in the actual operating environment, which may lead to misjudgment of the product's insulation performance.

[0008] In summary, neither of the two existing common insulation testing schemes can meet the accuracy and reliability requirements for insulation performance testing of gas-insulated ring main units. There is an urgent need for a new testing method that can accurately locate the discharge position while simulating the actual operating environment, providing a reliable basis for insulation performance evaluation and product optimization of gas-insulated ring main units. Summary of the Invention

[0009] This invention provides a visual sealed insulation testing device and method for inflatable ring main units, which addresses the technical deficiency in the prior art where two common insulation testing schemes cannot meet the accuracy and reliability requirements for insulation performance testing of inflatable ring main units.

[0010] To achieve the above objectives, the present invention employs the following technical solution: In a first aspect, a visual sealing insulation testing device for gas-insulated ring main units is provided, comprising: The base has multiple insulating supports on its top, and the space between the multiple insulating supports forms a receiving space. A test sample fixing plate is disposed on the receiving space, and a grounding terminal is connected to its end; An insulating partition is disposed in the receiving space to divide the receiving space into multiple receiving areas; The dehumidification unit and the micro-water online monitoring unit are detachably installed in the receiving area; The sealing component has one end for connection to the test sample and the other end for connection to a visualization component, which abuts against the test sample fixing plate.

[0011] Furthermore, the dehumidification unit and the micro-water online monitoring unit are arranged at intervals, and the dehumidification unit is located below the test sample; The dehumidification unit is used to dehumidify the test sample, and the micro-moisture online monitoring unit is used to monitor the moisture content in the test sample.

[0012] Furthermore, the sealing assembly includes: The test specimen includes a rubber sealing ring, a fixing plate, and a double-ended screw. The rubber sealing ring is located on the sealing surface of the test specimen, and the fixing plate and the double-ended screw are located on one side of the test specimen. The visualization component is located on the other side of the test sample and is coupled with a double-ended screw.

[0013] Furthermore, the visualization component includes: Acrylic glass, wherein a metal plate is inlaid on the acrylic glass; A silicone buffer layer is disposed between the plexiglass and the metal clamp.

[0014] Furthermore, the insulating partitions are arranged at intervals along the length of the accommodating space.

[0015] Furthermore, the insulating partition is L-shaped.

[0016] Furthermore, the test specimen fixing plate has a horizontal structure.

[0017] Furthermore, the base is provided with a movable component.

[0018] Further, the moving component includes: A directional wheel is located at one end of the base; The casters are located at the other end of the base.

[0019] Secondly, a method for using a visual sealing insulation testing device for gas-insulated ring main units is provided. The method employs the visual sealing insulation testing device for gas-insulated ring main units as described above, and includes: Install the test sample onto the test sample fixing plate; The test sample on the test sample fixing plate is sealed. The sealed test sample is then dehumidified, and the pressure relief port of the test sample is sealed. Dry gas is introduced into the test sample through the test sample inlet; The test specimen is moved to the insulation area to conduct insulation testing.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. This testing device, through its dehumidification unit and online micro-water monitoring unit, effectively eliminates the influence of air humidity on the insulation performance of the test sample, thereby improving the accuracy of the test. Secondly, the sealing component maintains the required gas pressure during testing, eliminating the impact of insufficient gas pressure on insulation testing and improving the accuracy of product testing. Finally, the visualization component allows for timely and accurate location of the discharge position, providing a basis for judging the insulation performance of the test sample.

[0021] 2. The dehumidification unit and the online moisture monitoring unit are spaced apart to avoid mutual interference during operation. The dehumidification unit may generate heat, airflow, and electromagnetic interference during operation. If it is too close to the online moisture monitoring unit, these interference factors may affect the measurement accuracy and stability of the online moisture monitoring unit. By setting the distance apart, a relatively independent and stable working environment is created for the online moisture monitoring unit, enabling it to more accurately monitor the moisture content in the test sample and improving the reliability and accuracy of the monitoring data.

[0022] 3. The rubber sealing ring is placed on the sealing surface of the test sample. Utilizing the good elasticity and sealing properties of the rubber material, it can closely fit the sealing surface of the test sample, thereby improving the sealing effect.

[0023] 4. The metal clamps are embedded in the acrylic glass, providing a robust structural support for the visualization components; the silicone cushioning pads placed between the acrylic glass and the metal clamps serve to buffer and absorb shocks.

[0024] 5. Insulating partitions are installed at intervals along the length of the containment space to effectively separate components or areas with different potentials. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the ready-to-use state of a visual sealing insulation testing device for an inflatable ring network switchgear provided by the present invention.

[0027] Figure 2 This is a side view of a visual sealing insulation testing device for an inflatable ring network switchgear provided by the present invention.

[0028] Figure 3This invention provides a schematic diagram of the operation of a visual sealing insulation testing device for an inflatable ring network switchgear.

[0029] Figure 4 This is a schematic diagram of dehumidification operation in a visual sealing insulation testing device for an inflatable ring network switchgear provided by the present invention.

[0030] Figure 5 This invention provides a schematic diagram of the sealing plate of a visual sealing and insulation testing device for an inflatable ring network switchgear.

[0031] Figure 6 This is a schematic diagram of the silicone buffer layer in a visual sealing insulation testing device for an inflatable ring network switchgear provided by the present invention.

[0032] The components are as follows: 101. Directional wheel; 102. Universal wheel; 103. Insulating support; 104. Insulating partition; 105. Hook device; 106. Receptacle area; 107. Test sample fixing plate; 108. Grounding terminal; 109. Precautions nameplate; 201. Dehumidification unit; 202. Micro-water online monitoring unit; 3. Sealing assembly; 301. Rubber sealing ring; 302. Fixing pressure plate; 303. Double-ended screw; 4. Visualization assembly; 401. Acrylic glass; 402. Metal clamp; 403. Silicone buffer layer; 5. Test sample. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0039] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1-6 The first aspect of this invention provides a visual sealing and insulation testing device for an inflatable ring network switchgear, comprising: a base with a plurality of insulating supports 103 disposed on its top, the plurality of insulating supports 103 forming a rectangular accommodating space; a test sample fixing plate 107 disposed on the accommodating space, the end of which is connected to a grounding terminal 108; an insulating partition 104 disposed in the accommodating space to divide the accommodating space into a plurality of accommodating areas 106; a dehumidification unit 201 and a micro-water online monitoring unit 202 detachably disposed in the accommodating area 106; and a sealing component 3, one end of which is connected to the test sample 5, and the other end of which is connected to a visual component 4, the visual component 4 abutting against the test sample fixing plate 107.

[0040] In the above structure, multiple insulating pillars 103 are set on the top of the base to form a housing space, providing a stable basic support structure for the entire testing device, ensuring the stability of the overall structure of the device during the testing process, avoiding shaking caused by external factors or testing operations, thereby ensuring the accuracy and reliability of the test.

[0041] Secondly, the insulating partition 104 divides the accommodating space into multiple accommodating areas 106, which can store the tooling parts that are matched with the testing device, thus avoiding mutual interference between the tooling parts.

[0042] Furthermore, the test sample fixing plate 107 is positioned within the accommodating space, providing a dedicated mounting location for the gas-insulated ring main switchgear (test sample 5), ensuring that test sample 5 can be securely fixed to the testing device for subsequent testing operations. Simultaneously, the grounding terminal 108 connected to the end of the test sample fixing plate 107 can promptly conduct static electricity or induced charges generated by test sample 5 during testing to the ground, effectively preventing charge accumulation from harming testing personnel and equipment, and ensuring the safety of the testing process.

[0043] Through the synergistic effect of the dehumidification unit 201 and the micro-water online monitoring unit 202, the influence of air humidity or moisture on the insulation performance of the test sample 5 can be effectively eliminated, thereby improving the accuracy of the test sample 5. One end of the sealing component 3 is connected to the test sample 5, and the other end is connected to the visualization component 4. The visualization component 4 abuts against the test sample fixing plate 107, so that when insulation testing is carried out in a sealed state, the tester can directly observe the discharge situation inside the test sample 5 through the visualization component 4. Compared with the traditional overall sealing test, this device overcomes the problem of not being able to accurately locate the discharge position. It can clearly see the specific location and phenomenon of the discharge, providing an intuitive and accurate basis for in-depth analysis of the cause of insulation failure and evaluation of the insulation performance of the equipment. It helps R&D personnel to optimize and improve the product in a targeted manner, thereby improving the quality and reliability of the product.

[0044] Furthermore, since the sealing component 3 ensures a sealed connection between the test sample 5 and the visualization component 4, it effectively prevents external air, moisture, and other impurities from entering the test environment, ensuring the consistency between the test environment and the actual operating environment. Compared with open-chamber testing, this device avoids misjudgments of insulation performance caused by environmental differences, and can more accurately simulate actual operating conditions, thereby obtaining more realistic and reliable test results. This provides a strong guarantee for the insulation performance evaluation and quality control of gas-insulated ring network switchgear.

[0045] like Figure 4 As shown, the dehumidification unit 201 and the micro-moisture online monitoring unit 202 are arranged at intervals, and the dehumidification unit 201 is located below the test sample 5; wherein, the dehumidification unit 201 is used to dehumidify the test sample 5, and the micro-moisture online monitoring unit 202 is used to monitor the moisture content in the test sample 5.

[0046] During implementation, when the micro-moisture online monitoring unit 202 detects that the internal moisture content of the test sample 5 has reached the moisture content required for normal product operation, the external control device controls the dehumidification unit 201 to stop working and seals the pressure relief port of the test sample 5, so that the internal moisture content of the test sample 5 is maintained at the moisture content required for normal operation, thereby avoiding product judgment errors caused by the interference of moisture on the insulation test results of the test sample 5.

[0047] Furthermore, the dehumidification unit 201 and the micro-moisture online monitoring unit 202 are set apart to avoid mutual interference between the two during operation. By setting them apart, a relatively independent and stable working environment is created for the micro-moisture online monitoring unit 202, enabling it to monitor the moisture content in the test sample more accurately and improving the reliability and accuracy of the monitoring data.

[0048] Furthermore, the sealing assembly 3 includes a rubber sealing ring 301, a fixing plate 302, and a double-ended screw 303. The rubber sealing ring 301 is disposed on the sealing surface of the test sample 5, the fixing plate 302 and the double-ended screw 303 are disposed on one side of the test sample 5, and the visualization assembly 4 is disposed on the other side of the test sample 5 and cooperates with the double-ended screw 303. By adjusting the double-ended screw 303, the tightness of the rubber sealing ring 301 acting on the sealing surface can be achieved.

[0049] The rubber sealing ring 301 is placed on the sealing surface of the test sample 5. Utilizing the excellent elasticity and sealing properties of the rubber material, it can tightly fit the sealing surface of the test sample 5, improving the sealing effect. During the test, the gas-filled ring main unit is usually filled with insulating gas at a certain pressure. The rubber sealing ring 301 can withstand the gas pressure, forming a reliable sealing barrier, effectively preventing the insulating gas from leaking out from the sealing surface, ensuring the airtightness of the test environment, and guaranteeing the accuracy and reliability of the test results.

[0050] Due to the setting of the sealing component 3, the sealed connection between the visualization component 4 and the test sample 5 can be guaranteed, and the observation field of the visualization component 4 will not be obstructed. The tester can directly and clearly see the discharge phenomenon inside the test sample 5 through the visualization component 4, including detailed information such as the location, intensity and shape of the discharge. This provides an intuitive and accurate basis for in-depth analysis of the cause of insulation failure and evaluation of the insulation performance of the equipment, which helps to improve the efficiency and accuracy of fault diagnosis.

[0051] Furthermore, such as Figure 5 As shown, the sealing panel, also known as the visualization component 4, includes an acrylic glass 401, a metal clamp 402 embedded in the acrylic glass 401, and a silicone buffer layer 403 disposed between the acrylic glass 401 and the metal clamp 402 to prevent air leakage caused by the acrylic glass 401 breaking due to excessive clamping force.

[0052] In this embodiment, the insulating partition 104 is L-shaped and is arranged at intervals along the length of the accommodating space, dividing the accommodating space into multiple accommodating areas 106 of the same size.

[0053] In this embodiment, the test specimen fixing plate 107 is a horizontal structure, and the test specimen 5 is vertically installed on the top of the test specimen fixing plate 107.

[0054] In this embodiment, a movable component is provided on the base. The movable component includes a directional wheel 101 and a universal wheel 102. The directional wheel 101 is located at one end of the base, and the universal wheel 102 is located at the other end of the base. The movable component facilitates the movement of the testing device.

[0055] In this embodiment, a hook device 105 is installed between two adjacent insulating pillars 103.

[0056] In this embodiment, a precaution nameplate 109 is installed on the test sample fixing plate 107. The precaution nameplate 109 can intuitively help operators to operate more standardizedly during the test.

[0057] Secondly, a method for using a visual sealing insulation testing device for gas-insulated ring main units is provided. The method employs the visual sealing insulation testing device for gas-insulated ring main units as described above, and includes: Step 1: Install the test sample onto the test sample fixing plate; Step 2: Seal the test sample on the test sample fixing plate; Step 3: Dehumidify the sealed test sample and seal the pressure relief port of the test sample; Step 4: Inject dry gas into the test sample through the gas inlet; Step 5: Move the test sample to the insulation area to conduct insulation testing.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A visual sealing insulation testing device for an air-filled ring network switch device, characterized in that, The utility model relates to a kind of test device for visual sealing insulation of inflatable ring network switch equipment, including: Base, the top of which is provided with a plurality of insulating pillars, and a containing space is formed between the plurality of insulating pillars; A test sample fixing plate is arranged in the containing space, and a grounding terminal is connected to the end of the test sample fixing plate; An insulating partition is arranged in the containing space to divide the containing space into a plurality of containing areas; A dehumidification unit and a micro-water online monitoring unit are detachably arranged in the containing area; A sealing assembly is connected to the test sample at one end and connected to a visualization assembly at the other end, and the visualization assembly abuts against the test sample fixing plate.

2. The visual sealing and insulation testing device for the inflatable ring main unit switch equipment according to claim 1, characterized in that, The dehumidification unit and the micro-water online monitoring unit are arranged at intervals, and the dehumidification unit is located below the test sample. The dehumidification unit is used for dehumidifying the test sample, and the micro-water online monitoring unit is used for monitoring the moisture in the test sample.

3. The visual sealing and insulation testing device for the inflatable ring main unit switch equipment according to claim 1, characterized in that, The sealing assembly includes: A rubber sealing ring, a fixed pressing plate and a double-headed screw rod, the rubber sealing ring is arranged on the sealing surface of the test sample, the fixed pressing plate and the double-headed screw rod are arranged on one side of the test sample; The visualization assembly is arranged on the other side of the test sample and cooperates with the double-headed screw rod.

4. The visual sealing and insulation testing device for the inflatable ring main unit switch equipment according to claim 1 or 3, characterized in that, The visualization assembly includes: A plexiglass with a metal clamp plate embedded in it; A silica gel buffer layer is arranged between the plexiglass and the metal clamp plate.

5. The visual sealing and insulation testing device for the inflatable ring main unit switchgear according to claim 1, characterized in that, The insulating partitions are arranged at intervals along the length of the containing space.

6. The visual sealing and insulation testing device for the inflatable ring main unit switchgear according to claim 5, characterized in that, The insulating partitions are L-shaped.

7. The visual sealing and insulation testing device for the inflatable ring main unit switchgear according to claim 1, characterized in that, The test sample fixing plate is in a horizontal structure.

8. The visual sealing and insulation testing device for the inflatable ring main unit switchgear according to claim 1, characterized in that, A moving assembly is arranged on the base.

9. The visual sealing and insulation testing device for the inflatable ring main unit switchgear according to claim 8, characterized in that, The moving assembly includes: A directional wheel is arranged at one end of the base; A universal wheel is arranged at the other end of the base.

10. A method for using a visual sealing insulation testing device for an inflatable ring main unit switchgear, characterized in that, The method is carried out using the visualization sealing insulation test device for inflatable ring network switch equipment according to any one of claims 1-9, including: Mounting the test sample on the test sample fixing plate; Sealing the test sample on the test sample fixing plate; Dehumidifying the sealed test sample and sealing the pressure relief port of the test sample; Through the air inlet of the test sample, dry gas is filled into the test sample; Move the test sample to the insulating area to carry out insulation test.

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