Overall electricity resistance test electrode device for insulating protective clothing and test method of overall electricity resistance test electrode device

Abstract

The invention provides an overall electricity resistance test electrode device for insulation protective clothing and a test method thereof, and relates to the technical field of test. The bearing base is a bearing base of the whole electricity resistance test electrode device for the insulation protective clothing, and the top is provided with an insulation positioning seat. And the clothes hanger type composite electrode assembly is fixed on the bearing base through the insulating positioning seat. And the flexible grounding electrode layer is attached to the outer surface of the insulating protective clothing. Through the combined electrode structure, the arc-shaped chamfer design and the adjustable mechanism, the overall accurate test of the insulating protective clothing, especially the insulating protective clothing including the connecting section, is realized. The non-dead-corner coverage of the key connection section is realized, the problem that the connection section defect is missed in the traditional plate electrode is solved, and the test integrity is obviously improved. The sliding flash discharge interference is effectively inhibited, the sliding flash misjudgment rate is reduced to 0.5% or below, and the test precision is greatly improved. The adaptive range covers the specifications of existing mainstream protective clothing, the adaptability and the test efficiency are well optimized, and the structural stability is excellent.

Description

Technical Field

[0001] This application relates to the field of testing technology, and in particular to an overall electrical withstand test electrode device for insulating protective clothing and its testing method. Background Technology

[0002] Insulating protective clothing is a core piece of equipment for ensuring personnel safety in high-voltage work environments. Due to its manufacturing process, seams, cuffs, and connections to the garment body are often weak points in insulation. Existing electrical withstand voltage testing devices for insulating protective clothing have the following main drawbacks: First, the test electrodes mostly use flat or simple cylindrical structures, which cannot conform to the contours of the human body, resulting in incomplete coverage of the connection points and easy omission of weak points; second, the electrode connections are mostly sharp structures, which can easily generate local electric field concentration during testing, causing flashover discharge and misjudging it as insulation breakdown, thus reducing test accuracy; third, the electrode size is fixed, making it impossible to adapt to different sizes of insulating protective clothing, requiring frequent electrode replacement and resulting in low testing efficiency. Summary of the Invention

[0003] In view of the above problems, this application proposes an overall electrical withstand electrode device and its testing method for insulating protective clothing to overcome the shortcomings of the prior art.

[0004] In a first aspect, embodiments of this application provide an overall dielectric withstand electrode device for insulating protective clothing, comprising: The supporting base serves as the foundation for the overall electrical withstand test electrode device of the insulating protective clothing, and an insulating positioning seat is provided on its top. A coat hanger-type composite electrode assembly is fixed to the bearing base by the insulating positioning seat, and is used to form a high-voltage side electric field by adhering to the inner surface of the insulating protective clothing. A flexible grounding electrode layer, which is attached to the outer surface of the insulating protective clothing, is used to form a closed electric field loop with the hanger-type composite electrode assembly during operation; The coat hanger-type composite electrode assembly includes: multiple electrode units, each electrode unit including: a rigid support frame and a flexible conductive layer covering the surface of the rigid support frame, the rigid support frame being used to rigidly support the flexible conductive layer, so that each electrode unit is attached to the inner surface of the insulating protective clothing to form a high-voltage side electric field.

[0005] Optionally, the plurality of electrode units include: shoulder electrodes, torso electrodes, and sleeve electrodes; The connection points between the shoulder electrode and the sleeve electrode, and between the torso electrode and the shoulder electrode, are all provided with an arc-shaped chamfer structure of R3-R5mm.

[0006] Optionally, the rigid support frame is made of aerospace aluminum alloy, which is anodized to make the surface resistivity of the rigid support frame ≥10¹²Ω·cm. The rigid support frame has an arc-shaped transition chamfer with a radius of 5-15mm at the connection between the shoulder and sleeve and the connection between the torso and shoulder. The curvature of the arc-shaped transition chamfer is adapted to the movement trajectory of the human joint to avoid point contact between the rigid support frame and the protective clothing connection section. The flexible conductive layer is made of silver-plated conductive cloth with a thickness of 0.1-0.3 mm and a surface resistance of ≤1 Ω / cm. The gap between the flexible conductive layer and the rigid support frame is set to ≤0.1 mm.

[0007] Optionally, the coat hanger-type composite electrode assembly further includes: a conductive bonding layer, wherein the conductive bonding layer is a gold wire anisotropic conductive adhesive layer, and the flexible conductive layer is tightly bonded to the rigid support frame through the conductive bonding layer without air bubbles; The gold wire anisotropic conductive adhesive layer contains embedded gold wires with a diameter of 20-40μm, arranged at a spacing of 0.05-0.1mm, so that the flexible conductive layer and the rigid support skeleton have low impedance conduction throughout the entire range.

[0008] Optionally, the shoulder electrode is a nested telescopic sleeve structure with a positioning pin between the sleeves, and the telescopic adjustment range of the nested telescopic sleeve structure is 300-500mm. The sleeve electrode is connected to the shoulder electrode via a damped rotary joint, with a rotation angle range of 0-180°, to adjust the shoulder width and sleeve unfolding angle, thereby adapting to different sizes of insulating protective clothing. Both the telescopic sleeve and the damping rotary joint are provided with electric field compensation bosses. The curvature of the electric field compensation bosses is consistent with the arc transition chamfer, so that the uniformity error of the electric field on the adjusted electrode surface is ≤5%.

[0009] Optionally, the flexible grounding electrode layer has a double-layer structure, wherein the inner layer is a silver-plated conductive cloth and the outer layer is a silicone rubber insulating layer, and the thickness of the inner layer is 0.1-0.15mm, the thickness of the outer layer is 0.2-0.3mm, and the surface of the outer layer is provided with an anti-slip texture, the depth of which is set to 0.05-0.1mm; The area of ​​the flexible grounding electrode layer is 5%-10% larger than the coverage area of ​​the electrode unit in the coat hanger-type composite electrode assembly.

[0010] Optionally, the rigid support frame is integrally welded, wherein the weld joint is ground to achieve a surface roughness Ra≤0.8μm.

[0011] Optionally, a pleated structure is provided at the movable connection between the shoulder electrode and the sleeve electrode, and the pleat extension of the pleated structure is ≥50mm, so that the conductive layer of the shoulder electrode and the sleeve electrode is always in contact with the inner surface of the insulating protective clothing when adjusted.

[0012] Optionally, the insulating positioning seat is made of epoxy resin, and a high-voltage lead is embedded inside the epoxy resin. The connection point between the high-voltage lead and the rigid support frame is provided with a sealed insulating sleeve. The sealing insulation sleeve is made of fluororubber with a withstand voltage of ≥100kV.

[0013] Secondly, embodiments of this application provide a testing method, which is applied to the overall withstand voltage test electrode device for insulating protective clothing as described in any of the first aspects, the testing method comprising: Adjust the hanger-type composite electrode assembly according to the size of the insulating protective clothing to be tested, so that the outline of each electrode unit matches the wearing shape of the insulating protective clothing. The insulating protective clothing is fitted onto the hanger-type composite electrode assembly, so that the flexible conductive layer is tightly attached to the inner surface of the insulating protective clothing. The flexible grounding electrode layer is evenly covered on the outer surface of the insulating protective clothing, and the edge position is fixed with insulating tape to ensure that the flexible conductive layer does not shift. Connect one end of the grounding wire to the conductive end of the flexible grounding electrode layer (4) and the other end to the grounding terminal of the bearing base, and set the grounding resistance to ≤0.1Ω; Connect the high-voltage lead to the rigid support frame and conduct a voltage boost test to monitor the leakage current change of the insulating protective clothing in real time. If the leakage current increases to more than 10mA within a preset time during the test, the insulating protective clothing is determined to be punctured. If, during the continuous withstand voltage test, the leakage current remains stable and ≤1mA, the insulating protective clothing is deemed qualified. After the test is completed and the voltage is reduced, remove the insulating protective clothing, clean the hanger-type composite electrode assembly, and adjust the hanger-type composite electrode assembly to its initial position.

[0014] The overall electrical withstand test electrode device for insulating protective clothing proposed in this application includes: a support base 1, which serves as the support foundation for the overall electrical withstand test electrode device for insulating protective clothing, and an insulating positioning seat 2 is provided on the top of the support base 1.

[0015] A coat hanger-type composite electrode assembly 3 is fixed to the support base 1 via an insulating positioning seat 2. The coat hanger-type composite electrode assembly 3 is used to form a high-voltage side electric field by adhering to the inner surface of the insulating protective clothing. A flexible grounding electrode layer 4 is adhering to the outer surface of the insulating protective clothing. The flexible grounding electrode layer 4 is used to form a closed electric field loop with the coat hanger-type composite electrode assembly 3 during operation.

[0016] Among them, the coat hanger-type composite electrode assembly 3 includes: multiple electrode units, each electrode unit including: a rigid support frame 35, and a flexible conductive layer 34 covering the surface of the rigid support frame 35. The rigid support frame 35 is used to rigidly support the flexible conductive layer 34, which can make the coat hanger-type composite electrode assembly 3 form a composite structure of "rigid support frame - flexible conductive outer layer". This composite structure can make each electrode unit adhere to the inner surface of the insulating protective clothing to form a high-voltage side electric field.

[0017] This application creatively proposes a novel electrode device for testing the overall electrical withstand capability of insulating protective clothing. It addresses the problems of missed detection of connection sections, easy misjudgment of flashover, and poor adaptability in traditional testing devices. Through composite electrode structure, arc chamfer design, and adjustable mechanism, it achieves accurate overall testing of insulating protective clothing, especially including connection sections.

[0018] The electrode device for overall electrical withstand testing of insulating protective clothing in this application uses a hanger-type composite electrode assembly 3 to simulate the contour of the upper body of the human body. Combined with the tight fit of the flexible conductive layer 34, it achieves comprehensive coverage of key connection sections such as the shoulder-sleeve and torso-shoulder areas, solving the problem of missed connection section defects in traditional flat electrodes. Actual measurements show that the connection section coverage rate has increased from less than 60% in traditional devices to 100%, significantly improving test integrity. The arc-shaped chamfered structure 36 disperses the electric field intensity at the electrode connection points. Combined with the composite structure design of "rigid support frame - flexible conductive outer layer," it effectively suppresses flashover interference, reducing the flashover false positive rate to below 0.5%. The fit gap between the flexible conductive layer 34 and the insulating protective clothing is ≤0.1mm, simulating the electric field distribution during actual wear. This improves the consistency between test data and actual usage scenarios by more than 40%, significantly enhancing test accuracy.

[0019] The adjustable shoulder electrode 31's telescopic structure and the sleeve electrode 33's rotating joint design allow for compatibility with different sizes of insulating protective clothing (including but not limited to S-XXXL), covering the range of existing mainstream protective clothing specifications. No special electrodes need to be replaced, reducing the testing time for a single set of insulating protective clothing from 15 minutes with traditional devices to 5 minutes, increasing testing efficiency by 60%, and significantly optimizing compatibility and testing efficiency. The rigid support frame 35 is integrally welded from aerospace-grade aluminum alloy, combined with an epoxy resin insulating positioning seat, ensuring that the hanger-type composite electrode assembly 3 remains undeformed during testing. The bonding strength between the flexible conductive layer 34 and the rigid support frame 35 is ≥5N / cm. After more than 1000 actual adjustment tests, its conductivity and bonding performance show no significant attenuation, and its service life is more than three times that of traditional electrodes, demonstrating excellent structural stability. In summary, the overall electrical withstand capability testing electrode device for insulating protective clothing of this application has broad application prospects and high practicality. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an overall structural diagram of an integrated electrical withstand test electrode device for insulating protective clothing proposed in an embodiment of this application; Figure 2 This is a schematic diagram of a preferred electrode unit structure exemplified in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the overall structure of a preferred single electrode unit as exemplified in the embodiments of this application; Figure 4 This is a schematic diagram illustrating a preferred structure of the shoulder electrode 31 and sleeve electrode 33 as exemplified in the embodiments of this application. Figure 5 This is a schematic diagram illustrating a preferred insulating positioning seat 2 as exemplified in the embodiments of this application; Figure 6 This is a schematic diagram illustrating a preferred flexible grounding electrode layer 4 as described in the embodiments of this application; Figure 7 This is a flowchart of a testing method proposed in an embodiment of this application. Detailed Implementation

[0021] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] The inventors discovered that insulating protective clothing is a core piece of equipment for ensuring personnel safety in high-voltage work scenarios. Due to the characteristics of its manufacturing process, its seams, cuffs, and connections to the body are often weak points in insulation. Existing electrical withstand voltage testing devices for insulating protective clothing have the following main drawbacks: First, the test electrodes mostly use flat or simple columnar structures, which cannot conform to the contours of the human body, resulting in incomplete coverage of the connection points and easy omission of weak points; second, the electrode connections are mostly sharp structures, which can easily generate local electric field concentration during testing, causing flashover discharge and misjudging it as a breakdown of the insulating protective clothing, thus reducing test accuracy; third, the electrode size is fixed and cannot be adapted to insulating protective clothing of different sizes, requiring frequent electrode replacement and resulting in low testing efficiency.

[0023] Further research by the inventors revealed that some traditional insulating protective tube testing devices employ cylindrical encapsulated electrode structures, which are only suitable for testing tubular insulating components and cannot adapt to the complex human body contours of protective clothing. Other devices, while possessing flexible electrode structures with good fit, lack anti-slip and anti-flashover mechanisms and size adjustment mechanisms designed for protective clothing testing scenarios, thus failing to meet overall electrical withstand capability testing requirements. Therefore, there is an urgent need for a dedicated testing electrode device that offers contour fit, anti-slip and anti-flashover capabilities, and size adaptability.

[0024] To address the aforementioned problems, the inventors, through extensive research, have creatively proposed a device for testing the overall electrical withstand capability of insulating protective clothing, and a testing method thereof, as described in this application. The technical solution of this application is explained and described in detail below.

[0025] This application discloses an integrated withstand voltage testing electrode device for insulating protective clothing, referring to... Figure 1 The structural diagram shown includes: a support base 1, an insulating positioning base 2, a coat hanger-type composite electrode assembly 3, and a flexible grounding electrode layer 4.

[0026] The support base 1 serves as the foundation for the integrated withstand voltage test electrode device of the insulating protective clothing. An insulating positioning seat 2 is located on the top of the support base 1. The coat hanger-type composite electrode assembly 3 is fixed to the support base 1 via the insulating positioning seat 2. Since the coat hanger-type composite electrode assembly 3 can be understood as covering the surface of the insulating positioning seat, therefore... Figure 1The image shows a coat hanger-type composite electrode assembly 3, with the insulating positioning seat 2 overlapping with the coat hanger-type composite electrode assembly 3. The coat hanger-type composite electrode assembly 3 is used to form a high-voltage side electric field by adhering to the inner surface of the insulating protective clothing.

[0027] The flexible grounding electrode layer 4 is attached to the outer surface of the insulating protective clothing. The flexible grounding electrode layer 4 is used to form a closed electric field circuit with the coat hanger-type composite electrode assembly 3 during operation; that is, after the coat hanger-type composite electrode assembly 3 is energized, it can form a closed electric field circuit with the flexible grounding electrode layer 4.

[0028] The coat hanger-type composite electrode assembly 3 includes: multiple electrode units, as shown in the reference. Figure 2 The schematic diagram of the cross-sectional structure of the electrode unit shown is for reference. Figure 3 The diagram shows a preferred overall structure of a single electrode unit. Each electrode unit includes a rigid support frame 35 and a flexible conductive layer 34 covering the surface of the rigid support frame 35. That is, each electrode is formed by the flexible conductive layer 34 and the rigid support frame 35. The rigid support frame 35 rigidly supports the flexible conductive layer 34, allowing each electrode unit to adhere to the inner surface of the insulating protective clothing to form a high-voltage electric field. This electrode structure enables the coat hanger-type composite electrode assembly 3 to form a "rigid support frame - flexible conductive outer layer" composite structure. This composite structure allows each electrode unit to adhere to the inner surface of the insulating protective clothing to form a high-voltage electric field, improving testing accuracy.

[0029] In one embodiment of this application, preferably, the rigid support frame 35 is made of an aerospace aluminum alloy material, which is anodized to achieve a surface resistivity of ≥10¹²Ω·cm; the flexible conductive layer 34 is made of silver-plated conductive cloth material, which has a thickness of 0.1-0.3mm, a surface resistivity of ≤1Ω / cm, and a bonding gap of ≤0.1mm between the flexible conductive layer 34 and the rigid support frame 35.

[0030] Preferably, the rigid support frame 35 has an arc-shaped transition chamfer with a radius of 5-15mm at the connection between the shoulder and sleeve, and at the connection between the torso and shoulder. The curvature of this arc-shaped transition chamfer matches the movement trajectory of the human joint, thus preventing point contact between the rigid support frame 35 and the protective clothing connection section. It should be noted that the function of the transition chamfer in traditional structures is generally to prevent accidental injury from sharp objects. However, this application creatively proposes to set arc-shaped transition chamfers at each connection of the rigid support frame 35, the function of which is to improve the distribution of the electrode electric field, which is different from the traditional function.

[0031] In one embodiment of this application, the plurality of electrode units include: a shoulder electrode 31, a torso electrode 32, and a sleeve electrode 33. The connection points between the shoulder electrode 31 and the sleeve electrode 33, and between the torso electrode 32 and the shoulder electrode 31, are each provided with an arc-shaped chamfer structure 36 with an radius of R3-R5mm. Figure 4 (As shown in the image).

[0032] In traditional technologies, ordinary conductive adhesives or conductive sponges are often used for bonding conductive and non-conductive layers. Ordinary conductive adhesives, with their omnidirectional conductivity, easily cause lateral current diffusion, leading to electric field distortion, and are prone to air bubbles during bonding, resulting in poor local contact. Conductive sponges, on the other hand, have poor conductivity uniformity, large contact resistance fluctuations (2-5Ω), and are easily compressed and deformed during electrode adjustment, leading to bonding failure. After extensive research and testing, the inventors creatively proposed a conductive bonding layer to solve this problem. The coat hanger-type composite electrode assembly 3 also includes a conductive bonding layer 37, which is a gold wire anisotropic conductive adhesive layer. The flexible conductive layer 34 is tightly bonded to the rigid support frame 35 through the conductive bonding layer 37, without air bubbles. The gold wire anisotropic conductive adhesive layer contains gold wires with a diameter of 20-40μm, arranged at a spacing of 0.05-0.1mm, achieving vertical conductivity and horizontal insulation, thereby enabling low-impedance conduction throughout the flexible conductive layer 34 and the rigid support frame 35. The innovation of the gold wire anisotropic conductive adhesive layer lies in the directional arrangement of gold wires to form a "vertical conductive path," which avoids the lateral diffusion of current and ensures that the electric field is evenly distributed along the thickness of the protective clothing. Secondly, the physical rigidity of the gold wires can eliminate air bubbles and gaps at the bonding interface (bonding gap ≤ 0.05mm), achieving a seamless, full-area bonding and solving the pain point of "poor local contact caused by traditional materials."

[0033] In one embodiment of this application, reference is made to Figure 4 The diagram shows a preferred structure of shoulder electrode 31 and sleeve electrode 33. The shoulder electrode 31 is a nested telescopic sleeve structure with a positioning pin 311 between the sleeves. The telescopic adjustment range of this nested telescopic sleeve structure is 300-500mm.

[0034] Preferably, the sleeve electrode 33 can be connected to the shoulder electrode 31 via a damped rotary joint. The rotation angle range of the damped rotary joint is set to 0-180° to adjust the shoulder width and sleeve unfolding angle, thereby adapting to different sizes of insulating protective clothing. In addition, both the telescopic sleeve and the damped rotary joint are provided with electric field compensation bosses. The curvature of these electric field compensation bosses is consistent with the arc transition chamfer, which can ensure that the uniformity error of the electric field on the adjusted electrode surface is ≤5%.

[0035] In addition, a pleated structure can be provided at the movable connection between the shoulder electrode 31 and the sleeve electrode 33, with the pleat extension of the pleated structure being ≥50mm, so that the conductive layer of the shoulder electrode 31 and the sleeve electrode 33 is always in contact with the inner surface of the insulating protective clothing during adjustment.

[0036] In one embodiment of this application, preferably, the rigid support frame 35 is integrally welded, wherein the weld joint is ground to ensure that its surface roughness Ra≤0.8μm, thereby ensuring uniform electric field distribution.

[0037] In one embodiment of this application, reference is made to Figure 5 The diagram shows a preferred structure of the insulating positioning base 2. The insulating positioning base 2 is made of epoxy resin, with a high-voltage lead 5 embedded within it. A sealing insulating sleeve 6 is provided at the connection point between the high-voltage lead 5 and the rigid support frame 35. The sealing insulating sleeve 6 is made of fluororubber with a withstand voltage ≥100kV. This design allows each flexible conductive layer 34 to be energized without causing the rigid support frame 35 to become energized.

[0038] In one embodiment of this application, reference is made to Figure 6 The diagram shows a preferred structure of the flexible grounding electrode layer 4. Preferably, the flexible grounding electrode layer 4 has a double-layer structure, wherein the inner layer is a silver-plated conductive cloth 41, and the outer layer is a silicone rubber insulating layer 42. The thickness of the inner layer is 0.1-0.15 mm, and the thickness of the outer layer is 0.2-0.3 mm. The surface of the outer layer has an anti-slip texture with a depth of 0.05-0.1 mm. Preferably, the area of ​​the flexible grounding electrode layer 4 is 5%-10% larger than the coverage area of ​​the electrode unit in the coat hanger-type composite electrode assembly 3.

[0039] Through the design of the above structure, the conductive connection structure of the coat hanger-type composite electrode assembly 3 forms a single-path current loop, thereby avoiding electric field distortion caused by local current concentration, ensuring that the measured breakdown signal is the overall insulation failure signal of the protective clothing, and making the test results more accurate.

[0040] Based on the above explanations and descriptions, the overall electrical withstand voltage test electrode device for the insulating protective clothing proposed in this application has a horizontal bearing base 1 made of stainless steel with an insulating paint coating. An insulating positioning seat 2 is provided on top to fix the hanger-type composite electrode assembly 3, ensuring the stability of each electrode unit during testing. The insulating positioning seat 2 is made of epoxy resin, possessing high strength and excellent insulation performance, with a load-bearing capacity ≥50kg, meeting the weight requirements of the hanger-type composite electrode assembly 3 and the insulating protective clothing.

[0041] The hanger-type composite electrode assembly 3 is the core execution component. It adopts a composite structure of "rigid support frame - flexible conductive outer layer" and simulates the contour of the upper body of the human body as a whole, including shoulder electrode 31, torso electrode 32 and sleeve electrode 33, so as to ensure full fit with the inner surface of the insulating protective clothing.

[0042] The rigid support frame 35 is made of aerospace-grade aluminum alloy and undergoes anodizing treatment. This ensures structural strength while also providing insulation between it and the flexible conductive layer 34 through the oxide layer, preventing electric field distortion. The rigid support frame 35 is integrally welded, and the weld joints are finely ground to a surface roughness Ra≤0.8μm. The connection points between the shoulder electrode 31 and the sleeve electrode 32, and between the torso electrode 33 and the shoulder electrode 31, are equipped with arc-shaped chamfered structures 36 with an R3-R5mm radius. This design effectively disperses the local electric field intensity, avoids flashover caused by sharp structures, and ensures that the detection signal is a true breakdown signal of the insulating protective clothing.

[0043] The flexible conductive layer 34 is made of silver-plated conductive fabric with a thickness of 0.15-0.25 mm and a surface resistance of ≤0.5 Ω / cm. It is tightly bonded to the rigid support frame 35 with conductive adhesive, with a bonding gap of ≤0.1 mm. The silver-plated conductive fabric has both excellent conductivity and flexibility, and can adaptively conform to the contour of the insulating protective clothing, especially achieving gapless coverage in the wrinkled areas of the connection section. At the movable connection between the shoulder electrode 31 and the sleeve electrode 32, the flexible conductive layer 34 adopts a wrinkled design with a wrinkle extension of ≥50 mm, ensuring that the conductive layer is always in contact with the inner surface of the insulating protective clothing when the electrode is adjusted, avoiding poor contact caused by electrode movement.

[0044] To accommodate different sizes of protective clothing, the shoulder electrode 31 adopts a nested telescopic sleeve structure with a positioning pin 311 between the sleeves. The telescopic adjustment range is 300-500mm, which can match different shoulder width specifications. The sleeve electrode 33 is connected to the shoulder electrode 31 through a damped rotary joint. The rotation angle range is 0-180°, which can adjust the sleeve unfolding angle to adapt to different sleeve lengths and styles of insulating protective clothing. There is no need to replace the special electrode, thereby improving testing efficiency.

[0045] The flexible grounding electrode layer 4 adopts a double-layer composite structure, with an inner layer of silver-plated conductive cloth 41 and an outer layer of silicone rubber insulation 42. The inner layer is 0.1-0.15mm thick to ensure conductive contact with the outer surface of the protective clothing; the outer layer is 0.2-0.3mm thick, providing insulation and protection. The outer layer surface also features an anti-slip texture with a depth of 0.05-0.1mm to increase friction between the flexible grounding electrode layer 4 and the insulating protective clothing, preventing electrode layer displacement during testing and ensuring a stable electric field circuit. The flexible grounding electrode layer 4 is connected to the grounding terminal of the supporting base 1 via a grounding wire, thus forming a closed electric field circuit with the coat hanger-type composite electrode assembly 3 during operation.

[0046] The aforementioned innovative electrode device for testing the overall electrical withstand capability of insulating protective clothing addresses the problems of missed testing of connection sections, easy misjudgment of flashover, and poor adaptability in traditional testing devices. Through composite electrode structure, arc-shaped chamfer design, and adjustable mechanism, it achieves accurate overall testing of insulating protective clothing, especially including connection sections.

[0047] In the overall electrical withstand test electrode device for insulating protective clothing, the hanger-type composite electrode assembly 3 simulates the contour of the upper body of the human body. Combined with the tight fit of the flexible conductive layer 34, it achieves seamless coverage of key connection sections such as the shoulder-sleeve and torso-shoulder areas, solving the problem of missed connection section defects in traditional flat electrodes. Actual measurements show that the connection section coverage rate has increased from less than 60% in traditional devices to 100%, significantly improving test integrity. The arc-shaped chamfered structure 36 disperses the electric field intensity at the electrode connection points. Combined with the composite structure design of "rigid support frame - flexible conductive outer layer," it effectively suppresses flashover interference, reducing the flashover false positive rate to below 0.5%. The fit gap between the flexible conductive layer 34 and the insulating protective clothing is ≤0.1mm, simulating the electric field distribution during actual wear. The consistency between the test data and actual usage scenarios is improved by more than 40%, significantly enhancing test accuracy.

[0048] The adjustable shoulder electrode 31's telescopic structure and the sleeve electrode 33's rotating joint design allow for compatibility with different sizes of insulating protective clothing (including but not limited to S-XXXL), covering the existing mainstream protective clothing specifications. No special electrode replacement is required, reducing the testing time for a single set of insulating protective clothing from 15 minutes with traditional devices to 5 minutes, increasing testing efficiency by 60%, and significantly optimizing compatibility and testing efficiency. The rigid support frame 35 is integrally welded from aerospace-grade aluminum alloy, combined with an epoxy resin insulating positioning seat, ensuring that the hanger-type composite electrode assembly 3 remains undeformed during testing. The bonding strength between the flexible conductive layer 34 and the rigid support frame 35 is ≥5N / cm. After more than 1000 actual adjustment tests, its conductivity and bonding performance show no significant attenuation, and its service life is more than three times that of traditional electrodes, demonstrating excellent structural stability.

[0049] Based on the aforementioned overall dielectric withstand electrode device for insulating protective clothing, this application also proposes a testing method applied to the aforementioned overall dielectric withstand electrode device for insulating protective clothing, with reference to... Figure 7 The flowchart shown illustrates that the control method includes: Step 701: Adjust the hanger-type composite electrode assembly 3 according to the size of the insulating protective clothing to be tested, so that the outline of each electrode unit matches the wearing shape of the insulating protective clothing.

[0050] Since the sizes of insulating protective clothing vary, before the test begins, it is necessary to adjust the hanger-type composite electrode assembly 3 according to the size of the insulating protective clothing to match the outline of each electrode unit with the wearing shape of the insulating protective clothing, so as to ensure the accuracy of the test.

[0051] Step 702: Put the insulating protective clothing on the hanger-type composite electrode assembly 3 so that the flexible conductive layer 34 is tightly attached to the inner surface of the insulating protective clothing; Step 703: Evenly cover the outer surface of the insulating protective clothing with the flexible grounding electrode layer 4, and fix the edge position with insulating tape so that the flexible conductive layer 34 does not shift.

[0052] After adjusting the hanger-type composite electrode assembly 3, the insulating protective suit is then placed over it, ensuring the flexible conductive layer 34 adheres tightly to the inner surface of the suit. Next, the flexible grounding electrode layer 4 is evenly applied to the outer surface of the protective suit, and the edges are secured with insulating tape to prevent displacement of the flexible conductive layer 34. This allows insulating protective suits of various sizes to be securely fixed, ready for testing.

[0053] Step 704: Connect one end of the grounding wire to the conductive end of the flexible grounding electrode layer 4, and the other end to the grounding terminal of the bearing base 1, and set the grounding resistance to ≤0.1Ω.

[0054] When starting the test, first connect one end of the grounding wire to the conductive end of the flexible grounding electrode layer 4, and the other end to the grounding terminal of the bearing base 1, setting the grounding resistance to ≤0.1Ω. This completes the grounding connection.

[0055] Step 705: Connect the high-voltage lead 5 to the rigid support frame 35 and energize it for a voltage boost test, and monitor the leakage current change of the insulating protective clothing in real time.

[0056] After the grounding end is connected, the high-voltage lead 5 is connected to the rigid support frame 35, and power is applied for a voltage boost test. At this point, the insulation performance test of the insulating protective clothing begins. Throughout the test, the leakage current of the insulating protective clothing needs to be monitored in real time.

[0057] Step 706: If the leakage current increases to more than 10mA within a preset time during the test, the insulating protective clothing is determined to be broken down.

[0058] If the leakage current of the insulating protective clothing increases to more than 10mA within a preset time during real-time monitoring of its leakage current changes, the insulating protective clothing is determined to have been punctured.

[0059] Step 707: If, during the continuous withstand voltage test, the leakage current remains stable and is ≤1mA, the insulating protective clothing is deemed qualified.

[0060] If the leakage current of the insulating protective clothing remains stable and ≤1mA during the continuous withstand voltage period, the insulating protective clothing is deemed qualified.

[0061] Step 708: After the test is completed and the voltage is reduced, remove the insulating protective clothing, clean the hanger-type composite electrode assembly 3, and adjust the hanger-type composite electrode assembly 3 to the initial position.

[0062] After the test is completed, it is necessary to wait for the voltage to drop, otherwise it may harm the test personnel. After the voltage drops, remove the insulating protective clothing, clean the hanger-type composite electrode assembly 3, and adjust the hanger-type composite electrode assembly 3 to its initial position to prepare for the next test. Of course, it is understandable that if the size of the insulating protective clothing for the next test is the same as the size of the insulating protective clothing for this test, it is not necessary to adjust the hanger-type composite electrode assembly 3 to its initial position, and you can directly start step 202 and the subsequent test steps.

[0063] The above-mentioned overall electrical withstand test electrode device and test method for insulating protective clothing are further illustrated below with a specific embodiment: The dimensions of the bearing base 1 are selected as 800mm×600mm×1000mm, and a 2mm thick epoxy insulating paint is sprayed on the stainless steel surface; the insulating positioning seat 2 is cast from epoxy resin, and its dimensions are set as 200mm×200mm×300mm. M16 stainless steel bolts are pre-embedded to fix the coat hanger type composite electrode assembly 3.

[0064] The rigid support frame 35 of the coat hanger-type composite electrode assembly 3 is made of 7075 aviation aluminum alloy, which is welded after T6 heat treatment, and the overall weight after welding is ≤8kg; the inner tube diameter of the telescopic sleeve of the shoulder electrode 31 is 20mm, the outer tube diameter is 25mm, the positioning pin 311 adopts a spring plunger structure, and the adjustment step is 50mm; the damping rotary joint is made of brass, with a built-in silicone rubber damping ring, and the rotation torque is 1.5N·m to ensure the stability of the position after adjustment. The arc-shaped chamfer structure 36 adopts an R4mm specification, which is CNC milled and then ground to Ra≤0.8μm.

[0065] The flexible conductive layer 34 is made of 120g / ㎡ silver-plated conductive cloth with a thickness of 0.2mm and a surface resistance of 0.3Ω / cm. It is bonded with XY-401 conductive adhesive at a bonding temperature of 80℃ and a heat preservation time of 30 minutes. The peel strength after bonding is ≥6N / cm. The pleated design at the movable connection adopts a wave-shaped pre-folding process with a pre-fold width of 50mm and an extension of 60mm.

[0066] The inner layer of the flexible grounding electrode layer 4 is an 80g / ㎡ silver-plated conductive cloth, and the outer layer is a 0.25mm thick silicone rubber insulating layer. It is formed by hot pressing composite process with a composite temperature of 120℃ and a pressure of 0.5MPa. The anti-slip texture is a diamond grid structure with a grid size of 5mm×5mm and a depth of 0.08mm.

[0067] The above-described specific work is used to fabricate an overall electrical withstand test electrode device for insulating protective clothing. The subsequent testing process is as follows: S1: Sample preparation: According to the size of the insulating protective clothing to be tested, adjust the shoulder telescopic sleeve and sleeve rotation joint of the hanger-type composite electrode assembly 3 to match the electrode outline with the wearing shape of the insulating protective clothing; put the insulating protective clothing on the hanger-type composite electrode assembly 3 to ensure that the flexible conductive layer 34 is tightly attached to the inner surface of the insulating protective clothing, especially check the fit of the shoulder, cuff and other connecting sections to ensure that there are no gaps.

[0068] S2: Electrode arrangement: The flexible grounding electrode layer 4 is evenly covered on the outer surface of the insulating protective clothing, and the edge position is fixed with insulating tape to ensure that the electrode layer does not shift; one end of the grounding wire is connected to the conductive buckle of the flexible grounding electrode layer 4, and the other end is connected to the grounding terminal of the bearing base 1, with a grounding resistance ≤0.1Ω.

[0069] S3: Test execution: Connect the high voltage lead 5 to the rigid support frame 35 of the coat hanger-type composite electrode assembly 3, start the external test circuit to perform a voltage boost test, and continuously monitor the leakage current change in real time throughout the test process.

[0070] S4: Result Judgment: If the leakage current increases to more than 10mA within the preset time during the test, it is judged as a breakdown of the insulating protective clothing; if the leakage current is stable and ≤1mA within the withstand voltage time, it is judged as a qualified insulating protective clothing; at the same time, no slip flash discharge phenomenon caused by the electrode structure occurs during the test, thus ensuring the accuracy of the test results.

[0071] S5: Test End: After voltage reduction, remove the insulating protective clothing, clean the conductive cloth on the surface of each electrode in the hanger-type composite electrode assembly 3, adjust the hanger-type composite electrode assembly 3 to the initial position, and prepare for the next test.

[0072] The results of the above-mentioned actual tests show that the overall electrical withstand test electrode device for insulating protective clothing proposed in this application can achieve rapid adaptation to insulating protective clothing of different sizes, with 100% test coverage of connection sections, a flashover false judgment rate of 0.3%, and test data that is closer to actual use scenarios than traditional devices. In addition, the test time for a single set is shortened to 4.5 minutes, and the overall test efficiency is improved by 65%.

[0073] In summary, the overall electrical withstand test electrode device for insulating protective clothing proposed in this application includes: a support base 1, which serves as the support foundation for the overall electrical withstand test electrode device for insulating protective clothing, and an insulating positioning seat 2 is provided on the top of the support base 1.

[0074] A coat hanger-type composite electrode assembly 3 is fixed to the support base 1 via an insulating positioning seat 2. The coat hanger-type composite electrode assembly 3 is used to form a high-voltage side electric field by adhering to the inner surface of the insulating protective clothing. A flexible grounding electrode layer 4 is adhering to the outer surface of the insulating protective clothing. The flexible grounding electrode layer 4 is used to form a closed electric field loop with the coat hanger-type composite electrode assembly 3 during operation.

[0075] Among them, the coat hanger-type composite electrode assembly 3 includes: multiple electrode units, each electrode unit including: a rigid support frame 35, and a flexible conductive layer 34 covering the surface of the rigid support frame 35. The rigid support frame 35 is used to rigidly support the flexible conductive layer 34, which can make the coat hanger-type composite electrode assembly 3 form a composite structure of "rigid support frame - flexible conductive outer layer". This composite structure can make each electrode unit adhere to the inner surface of the insulating protective clothing to form a high-voltage side electric field.

[0076] This application creatively proposes a novel electrode device for testing the overall electrical withstand capability of insulating protective clothing. It addresses the problems of missed detection of connection sections, easy misjudgment of flashover, and poor adaptability in traditional testing devices. Through composite electrode structure, arc chamfer design, and adjustable mechanism, it achieves accurate overall testing of insulating protective clothing, especially including connection sections.

[0077] The electrode device for overall electrical withstand testing of insulating protective clothing in this application uses a hanger-type composite electrode assembly 3 to simulate the contour of the upper body of the human body. Combined with the tight fit of the flexible conductive layer 34, it achieves comprehensive coverage of key connection sections such as the shoulder-sleeve and torso-shoulder areas, solving the problem of missed connection section defects in traditional flat electrodes. Actual measurements show that the connection section coverage rate has increased from less than 60% in traditional devices to 100%, significantly improving test integrity. The arc-shaped chamfered structure 36 disperses the electric field intensity at the electrode connection points. Combined with the composite structure design of "rigid support frame - flexible conductive outer layer," it effectively suppresses flashover interference, reducing the flashover false positive rate to below 0.5%. The fit gap between the flexible conductive layer 34 and the insulating protective clothing is ≤0.1mm, simulating the electric field distribution during actual wear. This improves the consistency between test data and actual usage scenarios by more than 40%, significantly enhancing test accuracy.

[0078] The adjustable shoulder electrode 31's telescopic structure and the sleeve electrode 33's rotating joint design allow for compatibility with different sizes of insulating protective clothing (including but not limited to S-XXXL), covering the range of existing mainstream protective clothing specifications. No special electrodes need to be replaced, reducing the testing time for a single set of insulating protective clothing from 15 minutes with traditional devices to 5 minutes, increasing testing efficiency by 60%, and significantly optimizing compatibility and testing efficiency. The rigid support frame 35 is integrally welded from aerospace-grade aluminum alloy, combined with an epoxy resin insulating positioning seat, ensuring that the hanger-type composite electrode assembly 3 remains undeformed during testing. The bonding strength between the flexible conductive layer 34 and the rigid support frame 35 is ≥5N / cm. After more than 1000 actual adjustment tests, its conductivity and bonding performance show no significant attenuation, and its service life is more than three times that of traditional electrodes, demonstrating excellent structural stability. In summary, the overall electrical withstand capability testing electrode device for insulating protective clothing of this application has broad application prospects and high practicality.

[0079] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0080] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0081] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims. All of these forms are within the protection scope of this application.

Claims

1. A device for testing the overall electrical withstand capability of an insulating protective garment, characterized in that, include: The supporting base (1) is the supporting foundation of the overall electrical resistance test electrode device of the insulating protective clothing, and an insulating positioning seat (2) is provided on its top. The coat hanger type composite electrode assembly (3) is fixed to the bearing base (1) by the insulating positioning seat (2), and is used to form a high-voltage side electric field by adhering to the inner surface of the insulating protective clothing; A flexible grounding electrode layer (4) is attached to the outer surface of the insulating protective clothing and is used to form a closed electric field loop with the hanger-type composite electrode assembly (3) during operation; The coat hanger-type composite electrode assembly (3) includes: multiple electrode units, each electrode unit including: a rigid support frame (35) and a flexible conductive layer (34) covering the surface of the rigid support frame (35). The rigid support frame (35) is used to rigidly support the flexible conductive layer (34) so ​​that each electrode unit is attached to the inner surface of the insulating protective clothing to form a high-voltage side electric field.

2. The overall dielectric withstand electrode device for insulating protective clothing according to claim 1, characterized in that, The plurality of electrode units include: a shoulder electrode (31), a torso electrode (32), and a sleeve electrode (33); The connection between the shoulder electrode (31) and the sleeve electrode (33), and the connection between the torso electrode (32) and the shoulder electrode (31) are provided with an arc-shaped chamfer structure (36) of R3-R5mm.

3. The overall dielectric withstand electrode device for insulating protective clothing according to claim 1, characterized in that, The rigid support frame (35) is made of aerospace aluminum alloy, which is anodized to make the surface resistivity of the rigid support frame (35) ≥10¹²Ω·cm. The rigid support frame (35) has an arc-shaped transition chamfer with a radius of 5-15mm at the connection between the shoulder and sleeve and the connection between the torso and shoulder. The curvature of the arc-shaped transition chamfer is adapted to the movement trajectory of the human joint to avoid point contact between the rigid support frame (35) and the protective clothing connection section. The flexible conductive layer (34) is made of silver-plated conductive cloth material with a thickness of 0.1-0.3 mm and a surface resistance of ≤1 Ω / cm. The gap between the flexible conductive layer (34) and the rigid support frame (35) is set to be ≤0.1 mm.

4. The overall dielectric withstand electrode device for insulating protective clothing according to claim 3, characterized in that, The coat hanger-type composite electrode assembly (3) further includes: a conductive bonding layer (37), which is a gold wire anisotropic conductive adhesive layer, and the flexible conductive layer (34) is tightly bonded to the rigid support frame (35) through the conductive bonding layer (37) without any air bubbles; The gold wire anisotropic conductive adhesive layer is embedded with gold wires with a diameter of 20-40μm, arranged at a spacing of 0.05-0.1mm, so that the flexible conductive layer (34) and the rigid support skeleton (35) have low impedance conduction throughout the entire range.

5. The overall dielectric withstand electrode device for insulating protective clothing according to claim 4, characterized in that, The shoulder electrode (31) is a nested telescopic sleeve structure with a positioning pin (311) between the sleeves. The telescopic adjustment range of the nested telescopic sleeve structure is 300-500mm. The sleeve electrode (33) is connected to the shoulder electrode (31) through a damped rotary joint, and the rotation angle range is set to 0-180° to adjust the shoulder width and sleeve unfolding angle, thereby adapting to different sizes of insulating protective clothing. Both the telescopic sleeve and the damping rotary joint are provided with electric field compensation bosses. The curvature of the electric field compensation bosses is consistent with the arc transition chamfer, so that the uniformity error of the electric field on the adjusted electrode surface is ≤5%.

6. The overall dielectric withstand electrode device for insulating protective clothing according to claim 1, characterized in that, The flexible grounding electrode layer (4) has a double-layer structure, wherein the inner layer is a silver-plated conductive cloth (41) and the outer layer is a silicone rubber insulating layer (42). The thickness of the inner layer is 0.1-0.15mm and the thickness of the outer layer is 0.2-0.3mm. The outer layer surface is provided with anti-slip texture, and the depth of the anti-slip texture is set to 0.05-0.1mm. The area of ​​the flexible grounding electrode layer (4) is 5%-10% larger than the coverage area of ​​the electrode unit in the coat hanger composite electrode assembly (3).

7. The overall dielectric withstand electrode device for insulating protective clothing according to claim 1, characterized in that, The rigid support frame (35) is integrally welded, wherein the weld joint is ground to make its surface roughness Ra≤0.8μm.

8. The overall dielectric withstand electrode device for insulating protective clothing according to claim 2, characterized in that, A pleated structure is provided at the movable connection between the shoulder electrode (31) and the sleeve electrode (33), and the pleat extension of the pleated structure is ≥50mm, so that the conductive layer of the shoulder electrode (31) and the sleeve electrode (33) is always in contact with the inner surface of the insulating protective clothing when the adjustment is performed.

9. The overall dielectric withstand electrode device for insulating protective clothing according to claim 1, characterized in that, The insulating positioning base (2) is made of epoxy resin, and a high-voltage lead wire (5) is embedded inside the epoxy resin. The connection point between the high-voltage lead (5) and the rigid support frame (35) is provided with a sealing insulating sleeve (6). The sealing insulation sleeve (6) is made of fluororubber with a voltage resistance of ≥100kV.

10. A testing method, characterized in that, The test method is applied to the overall dielectric withstand test electrode device for insulating protective clothing according to any one of claims 1-9, and the test method includes: Adjust the hanger-type composite electrode assembly (3) according to the size of the insulating protective clothing to be tested so that the outline of each electrode unit matches the wearing shape of the insulating protective clothing. The insulating protective clothing is placed on the hanger-type composite electrode assembly (3) so that the flexible conductive layer (34) is tightly attached to the inner surface of the insulating protective clothing; The flexible grounding electrode layer (4) is evenly covered on the outer surface of the insulating protective clothing, and the edge position is fixed with insulating tape so that the flexible conductive layer (34) does not shift. Connect one end of the grounding wire to the conductive end of the flexible grounding electrode layer (4) and the other end to the grounding terminal of the bearing base (1), and set the grounding resistance to ≤0.1Ω; Connect the high-voltage lead (5) to the rigid support frame (35) and energize it for a voltage boost test to monitor the leakage current change of the insulating protective clothing in real time. If the leakage current increases to more than 10mA within a preset time during the test, the insulating protective clothing is determined to be punctured. If, during the continuous withstand voltage test, the leakage current remains stable and ≤1mA, the insulating protective clothing is deemed qualified. After the test is completed and the voltage is reduced, remove the insulating protective clothing, clean the hanger-type composite electrode assembly (3), and adjust the hanger-type composite electrode assembly (3) to the initial position.

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