High-voltage insulating glove airtightness detection device and detection method

Abstract

The invention discloses a high-voltage insulating glove airtightness detection device and detection method, and the device comprises a box body which is provided with a plurality of connecting ports used for installing and sealing cuffs of to-be-detected insulating gloves; the vacuum pump is communicated with the inner cavity of the box body through an exhaust pipeline and is used for vacuumizing the box body; the pressure monitoring part is used for monitoring the pressure value of the inner cavity of the box body in real time; wherein the box body is at least partially made of a transparent material. The objective of the invention is to make up the deficiencies of the traditional artificial perceptual judgment method in accuracy and efficiency, meet the requirements of pre-construction rapid check, guarantee the personal safety of operation and maintenance personnel, and eliminate the potential weak links of on-site safety production.

Description

Technical Field

[0001] This invention belongs to the field of power grid operation and maintenance safety protection equipment testing technology, specifically relating to a high-voltage insulating glove airtightness testing device and testing method. Background Technology

[0002] In the daily operation and maintenance of 10kV substations, insulating gloves are crucial personal protective equipment for workers who directly contact live equipment during high-voltage equipment switching operations. The integrity of the insulating gloves is directly related to the personal safety of maintenance personnel. Even a tiny tear or pinhole, invisible to the naked eye, can create a leakage current path when in contact with high-voltage live parts, leading to a serious electric shock accident.

[0003] Currently, the most common method for checking the airtightness of insulating gloves in the power industry still relies on manual, intuitive judgment. The specific procedure typically involves slowly rolling the glove upwards from the open end, compressing the air to gather around the fingers and palm, and then judging whether there is a leak by the operator's sense of touch, hearing, and observation of how well the bulge is maintained. This method essentially depends on the individual's experience, attention, and even the prevailing state of mind.

[0004] In actual substations, power distribution rooms, and other field environments, this traditional method reveals significant limitations. First, its detection results are highly subjective; it is prone to missing minute, slow leaks, especially in low-light or noisy conditions, making accuracy unreliable. Second, the method is inefficient, only allowing operation and assessment of a single glove at a time, failing to meet the needs of batch inspections by work teams or rapid pre-work checks. To ensure safety, repeated inspections are sometimes necessary, further reducing work efficiency.

[0005] With the increasing number of power grid devices and the growing demand for more refined operation and maintenance, higher standards are being set for the reliability and testing efficiency of safety tools and equipment. The shortcomings of traditional testing methods in terms of accuracy and efficiency have become a potential weakness in on-site safety production. Therefore, there is an urgent need for an objective and rapid technology and device for testing the airtightness of insulated gloves to overcome the deficiencies of traditional methods. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a high-voltage insulating glove airtightness testing device and testing method. Its purpose is to overcome the shortcomings of traditional manual intuition judgment methods in terms of accuracy and efficiency, meet the needs of rapid pre-work verification, ensure the personal safety of operation and maintenance personnel, and eliminate potential weak links in on-site safety production.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: According to a first aspect of the present invention, a high-voltage insulating glove airtightness testing device is provided, comprising: The housing has multiple connection ports for installing and sealing the cuffs of the insulating gloves to be tested. A vacuum pump, which is connected to the internal cavity of the housing via a vacuum pipe, is used to evacuate the housing. A pressure monitoring component is used to monitor the pressure value of the internal cavity of the housing in real time; The box is at least partially made of a transparent material.

[0008] In one possible implementation of the first aspect, each of the connection ports includes: A cuff mounting sleeve is disposed on the outer wall of the box and is used to form an initial seal with the inner or outer wall of the cuff of the insulating glove; A locking mechanism is used to apply a radial locking force to the cuff fitted onto the cuff mounting sleeve.

[0009] In one possible implementation of the first aspect, the locking mechanism is a quick-locking clamp.

[0010] In one possible implementation of the first aspect, the material and cross-sectional shape of the cuff mounting sleeve are customized to match the rubber cuff material of the insulating glove.

[0011] In one possible implementation of the first aspect, the pressure monitoring component includes a pressure sensor and a pressure gauge connected to the pressure sensor signal, the pressure sensor being used to sense the pressure inside the cavity of the housing, and the pressure gauge being used to display the pressure value sensed by the pressure sensor.

[0012] In one possible implementation of the first aspect, the air extraction pipeline is provided with a pressure relief valve for releasing the negative pressure in the cavity inside the housing.

[0013] In one possible implementation of the first aspect, the number of connection ports is four, symmetrically arranged on the housing.

[0014] In one possible implementation of the first aspect, the pumping speed of the vacuum pump is configured to be uniform and stable to avoid impacting the insulating glove or causing its non-leaking deformation during the vacuuming process.

[0015] In one possible implementation of the first aspect, the housing is provided with a door for opening or closing the housing, the door is connected to the housing via a damping hinge, a sealing ring is provided between the door and the housing, and the housing is provided with feet for support and movement.

[0016] According to a second aspect of the present invention, a method for testing the airtightness of high-voltage insulating gloves is provided, employing the aforementioned high-voltage insulating glove airtightness testing device, the method comprising: The cuffs of multiple insulating gloves to be tested are respectively sealed and installed on multiple connection ports of the device; Close the box and start the vacuum pump to evacuate the internal cavity of the box until the internal pressure reaches a preset initial negative pressure value, then stop evacuating. The initial negative pressure value causes the insulating gloves to bulge appropriately. The chamber is kept sealed and left to stand for a preset time. The pressure monitoring component is used to monitor and compare the pressure change of the internal cavity of the chamber before and after standing. If the pressure drop during the resting period exceeds a preset threshold and the bulging of the insulating glove is observed through the transparent part of the box, then the airtightness of the insulating glove is deemed unqualified. Conversely, if the airtightness is not satisfactory, then the airtightness is deemed acceptable.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: This invention provides a high-voltage insulating glove airtightness testing device. It uses a vacuum pump to create a set negative pressure and a pressure monitoring component to quantitatively monitor pressure changes within a sealed cavity in real time. This transforms the testing reliance from personal perception to objective pressure data, avoiding misjudgments and missed detections caused by human experience and environmental interference. It is particularly effective in identifying minute or slow leaks, improving testing accuracy. The device housing has multiple connection ports, allowing for the simultaneous sealing and installation of multiple insulating gloves for testing, enabling batch testing in a single operation. This changes the inefficient traditional method of checking only one glove at a time, making it particularly suitable for rapid pre-work checks or periodic batch testing, significantly improving testing efficiency. After reaching the initial negative pressure, a judgment can be made by briefly allowing the gloves to stand still and comparing pressure changes, resulting in a rapid testing process. Simultaneously, the transparent housing allows for direct observation of the bulging state of the insulating gloves, providing dual verification through pressure data and visual confirmation, making the determination of pass or fail more intuitive. This invention provides an objective and efficient testing method to ensure that the airtightness of in-use insulating gloves can be reliably verified, eliminating the risk of electric shock caused by hidden damage to gloves from the source, and effectively making up for the safety weaknesses of traditional manual inspection methods. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall isometric view of the high-voltage insulating glove airtightness testing device of the present invention; Figure 2 This is a front view (door open) of a high-voltage insulating glove airtightness testing device according to the present invention. Figure 3 This is a side view of a high-voltage insulating glove airtightness testing device according to the present invention; Figure 4 This is a front view (door closed) of a high-voltage insulating glove airtightness testing device according to the present invention.

[0020] In the diagram: 1. Box body; 2. Connection port; 3. Vacuum pump; 4. Air extraction pipeline; 5. Pressure monitoring component; 11. Pressure relief valve; 12. Box door; 13. Box buckle; 14. Sealing ring; 15. Foot support; 16. Handle; 21. Cuff mounting sleeve; 22. Locking mechanism; 51. Pressure gauge. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions 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, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to solve the long-standing problems of low efficiency and subjective results in the field inspection of high-voltage insulating gloves in the power industry. Traditional pinching methods rely on human touch and hearing, which are prone to missing tiny pinholes or cracks in noisy, dimly lit substation environments. Furthermore, only one glove can be inspected at a time, failing to meet the needs of daily batch verification by work teams or rapid pre-operation inspections for large-scale projects. Therefore, this invention provides an integrated testing device and method based on the principle of quantitative negative pressure detection, transforming subjective experience-based judgment into objective data interpretation and enabling parallel testing of multiple gloves, thus improving the standardization and efficiency of the inspection operation.

[0023] Reference Figures 1 to 4 The high-voltage insulating glove airtightness testing device provided in this invention is centered on an integrated testing housing. The device's design fully considers the operating environment in power fields, achieving a compact structure and easy operation while ensuring testing accuracy and reliability.

[0024] The main body of the testing device is a box 1. Box 1 forms a sealable testing chamber. To facilitate the operator's visual observation of the overall state of the multiple gloves inside during the testing process, such as whether they are evenly bulging or whether there are any obvious local collapses, at least one main surface of box 1, preferably the front and top surfaces, is made of a transparent rigid material, such as an engineering plastic acrylic sheet. Using acrylic sheets not only provides high transparency and easy observation, but also results in a lightweight and strong material, making it suitable for manufacturing the box. The remaining parts of box 1 can be made of metal (such as aluminum alloy) or other high-strength engineering plastics to ensure the overall structural stability. A foot support 15 is provided at the bottom of box 1 to ensure that the box is placed stably on the workbench.

[0025] The enclosure 1 is equipped with a door 12 for easy opening and closing to facilitate the installation and removal of gloves. The door 12 is connected to the main frame of the enclosure 1 via a damping hinge. The damping hinge ensures that the door 12 moves slowly and smoothly when opening and closing, preventing airflow impact or pinching of the operator's fingers due to rapid opening and closing, and also protecting the observation window on the door. A sealing ring 14, such as a silicone rubber or nitrile rubber sealing strip, is embedded at the contact edge between the door 12 and the enclosure 1. When the door 12 is closed and locked, the sealing ring 14 is compressed, ensuring a reliable seal between the internal cavity of the enclosure and the outside atmosphere, a prerequisite for accurate negative pressure testing. A handle 16 is installed on the door 12 for easy opening. The enclosure 1 also has a latch 13 for locking the door 12 during testing to maintain a sealed state. For example, the latch 13 can be a common type such as a rotary hook or a lever-type quick-lock, requiring uniform locking force and providing a clear indication of the locking position.

[0026] Multiple connection ports 2 are fixedly provided on one side wall or rear wall of the housing 1. The connection ports 2 are the mounting interfaces for the insulating gloves to be tested, and their number determines the number of gloves that can be tested simultaneously in one operation. In a preferred but non-limiting embodiment of the invention, such as... Figure 1 As shown, there are four connection ports 2, symmetrically arranged on the opposite side panels of the housing 1. This layout is compact and makes efficient use of the internal space of the housing. Of course, depending on actual needs, the number of connection ports 2 can also be two, six, or other suitable numbers.

[0027] At the core of each connection port 2 is a cuff mounting sleeve 21. The cuff mounting sleeve 21 is a hollow cylindrical structure with an inner diameter slightly larger than the natural inner diameter of a standard high-voltage insulating glove cuff, allowing the glove cuff to be easily fitted. One end (inner end) of the cuff mounting sleeve 21 is sealed and fixedly connected to the wall panel of the housing 1, allowing its inner hole to communicate with the internal cavity of the housing 1; the other end (outer end) extends outward from the housing for glove installation. The outer surface of the cuff mounting sleeve 21 needs to form a good initial seal with the inner wall of the glove's rubber cuff. Therefore, the material and surface characteristics of the cuff mounting sleeve 21 need to be specifically designed. Preferably, the cuff mounting sleeve 21 is made of metal, such as aluminum alloy, stainless steel, or hard engineering plastic, but its outer surface should have appropriate roughness or be provided with annular shallow grooves to increase friction with the rubber and prevent the glove from being sucked inward during vacuuming. A more preferred option is to fit a sealing bushing made of elastic material onto the outer end of the cuff mounting sleeve 21. The outer diameter of the bushing is slightly larger than the natural inner diameter of the glove cuff. When the glove cuff is forcefully slipped over this bushing, the elastic bushing deforms and forms a tight seal with the inner wall of the glove cuff, creating the first seal. This sealing bushing is a functional component of the cuff mounting sleeve 21, and its material is custom-made as a special rubber that is compatible with the rubber material of the insulating glove, has a high coefficient of friction, and is resistant to aging.

[0028] To ensure reliable sealing, a locking mechanism 22 is also provided on the cuff mounting sleeve 21 at each connection port 2. After the glove cuff is fitted onto the cuff mounting sleeve 21, the locking mechanism 22 is operated to apply a uniform, centripetal radial locking force to the glove cuff portion on the cuff mounting sleeve 21. The radial locking force tightly presses the glove rubber layer onto the surface of the cuff mounting sleeve 21, eliminating any potential microscopic leakage channels. The locking mechanism 22 preferably used in this invention is a quick-locking clamp, such as a butterfly clamp, which can be quickly tightened or loosened by rotating the butterfly bolt. The locking force is evenly distributed, easy to operate, and suitable for frequent on-site assembly and disassembly.

[0029] To achieve negative pressure detection, the device is equipped with a vacuum system. This system mainly includes a vacuum pump 3 and a vacuum pipeline 4. The vacuum pump 3 is the power source for generating negative pressure. For example, a small rotary vane vacuum pump or a miniature piston vacuum pump is selected. The vacuum pump 3 is fixed to the top of the chamber 1 by a shock-absorbing pad or bracket. It should be noted that the pumping speed (i.e., flow rate) of the vacuum pump 3 needs to be properly configured and selected. If the pumping speed is too fast, a large pressure difference will be instantly formed inside the chamber 1 and inside the glove, which may cause the intact glove to undergo non-leakage temporary deformation due to uneven force, or even amplify the existing minor defects in the glove, interfering with the judgment. If the pumping speed is too slow, the detection cycle will be too long, affecting efficiency. Therefore, the selected vacuum pump 3 or its drive motor should have stable pumping characteristics, so that the pumping process is uniform and stable, ensuring that the pressure drops gradually, allowing the glove to gradually and evenly inflate, simulating the slow stress state in actual use, thereby more realistically reflecting its airtightness.

[0030] The suction line 4 connects the air inlet of the vacuum pump 3 to the internal cavity of the chamber 1. The line uses flexible plastic or rubber tubing, and the connections must be airtight. A pressure relief valve 11 is installed on the suction line 4. The pressure relief valve 11 is a normally closed solenoid valve or a manual ball valve. Its function is to allow outside air to slowly or quickly enter the chamber 1 when the test is completed or when it needs to be stopped midway, restoring the internal pressure to atmospheric pressure. This allows for safe and convenient removal of the gloves, preventing damage to the gloves due to negative pressure inside the chamber or sudden air intake during removal.

[0031] The pressure monitoring component 5 mainly consists of a pressure sensor and a pressure gauge 51. The pressure sensor is the sensing element, and this invention requires the use of a high-precision pressure sensor. It should be noted that the high-precision pressure sensor requires a resolution of 0.1 kPa or even higher, capable of detecting slow pressure changes caused by minute leaks, and able to reflect dynamic pressure trends in a timely manner. For example, a piezoresistive or capacitive micro-differential / absolute pressure sensor can be used. The pressure sensor is installed on the inner wall of the housing 1, with its sensing end directly exposed in the internal cavity of the housing, sensing pressure changes within the cavity and converting them into electrical signals. The pressure gauge 51 is the display unit, installed in a prominent position on the outer surface of the housing 1, such as the top of the housing 1, for easy reading by the operator. The pressure gauge 51 is connected to the pressure sensor. The pressure gauge 51 receives the electrical signal from the pressure sensor and converts it into an intuitive pressure value for display. The pressure gauge 51 can be a digital LCD display or an analog pointer gauge, but the dial scale must be fine. The display range of the pressure gauge 51 should cover the entire range from the local atmospheric pressure to the required vacuum level. Using pressure gauge 51, the operator can precisely control the stop point of vacuuming, i.e. the preset initial negative pressure value, and accurately read the pressure values ​​before and after settling for quantitative comparison.

[0032] Based on the above-described device structure, the high-voltage insulating glove airtightness testing method of the present invention is carried out according to the following steps: Step S1: Installation and sealing steps.

[0033] Open the box door 12.

[0034] Take a high-voltage insulating glove to be tested and slip its cuff inward from the outside of the cuff mounting sleeve 21 at the connection port 2. To ensure a good seal, it is recommended to use a folding operation. After slipping the glove cuff over the elastic sealing bushing on the cuff mounting sleeve 21, continue to pull the cuff backward (i.e., towards the fingertips) so that approximately 5-10 cm of the cuff section folds back, covering the previously slipped cuff portion and the outer end of the cuff mounting sleeve 21, forming a double-layer rubber wrap. Fully utilize the elastic deformation and self-adhesive properties of the rubber material to ensure a reliable seal.

[0035] Place the quick-locking clamp onto the cuff of the glove, which has already been fitted and folded, specifically at the middle section of the cuff mounting sleeve 21. Rotate the wing bolt of the clamp to evenly tighten it until a noticeable locking force is felt, and the glove cuff is securely fastened to the cuff mounting sleeve 21 and cannot move. At this point, a reliable seal has been formed between the glove and the housing.

[0036] Repeat the above process to install the remaining gloves to be tested onto other available connection ports 2. In this embodiment, a maximum of four gloves can be installed simultaneously.

[0037] Step S2: Vacuuming.

[0038] After confirming that all gloves are securely installed and that there are no foreign objects obstructing the closure of the box door, close the box door 12 and lock it with the box buckle 13. When the box door is closed, the sealing ring 14 is compressed, ensuring that the entire box is sealed.

[0039] Check that the pressure relief valve 11 is in the closed position.

[0040] Start the vacuum pump 3 and simultaneously open the vacuum control valve on the vacuum line 4 to begin evacuating the inside of the chamber 1.

[0041] The operator observes the reading on pressure gauge 51 and the shape of the gloves inside the transparent chamber. As the internal pressure decreases, the external atmospheric pressure pushes each glove further into the chamber, causing them to gradually inflate like balloons. It is important to note that the vacuum level should not be too high, as this could exceed the tensile strength of the glove material, causing intact gloves to burst or suffer permanent deformation; conversely, the vacuum level should not be insufficient, otherwise the inflating of the gloves will be subtle, and the pressure change rate caused by minor leaks will be too low to be detected. Therefore, a preset initial negative pressure value needs to be set. This preset initial negative pressure value is determined experimentally based on the safe operating pressure of the gloves and the material properties. For example, the initial negative pressure value can be set between -30 kPa and -50 kPa. In actual operation, a straightforward criterion is: when all gloves are noticeably and evenly inflated, with the fingers fully extended, but the palms and fingertips have not yet been stretched to a white and thin state, the vacuuming can be stopped. At this point, the value displayed on pressure gauge 51 is recorded as P1.

[0042] Step S3: Monitoring and Judgment.

[0043] Stop vacuum pump 3 and close the air extraction control valve to make the inside of chamber 1 closed and under negative pressure.

[0044] Start timing and allow the system to stand still for a preset time, such as 5 minutes. This settling time is to allow any minor leaks to manifest and to allow factors such as rubber stress relaxation and temperature fluctuations caused by the evacuation process to stabilize, reducing interference.

[0045] During and at the end of the settling period, the operator needs to perform two parallel observations: Observe the reading of pressure gauge 51 continuously or intermittently. For a glove with intact airtightness, since the entire system is sealed, the pressure value should remain basically stable during the settling period, or only decrease very slowly and slightly within the instrument's error range. If there is a leak in one (or several) gloves, outside air will continuously enter the chamber through the leak, causing the overall absolute pressure of the system to rise again (i.e., the vacuum level to decrease). At the end of the settling period, record the reading of pressure gauge 51 as P2.

[0046] Meanwhile, the bulging shape of each glove can be directly observed through the transparent box 1. A good glove should maintain its bulging shape during rest. In a leaking glove, gas will enter the glove from the leak point, reducing the pressure difference between the inside and outside of the glove. This will cause the glove to collapse and shrink noticeably, either entirely or partially (near the leak point), contrasting with the full shape of other good gloves.

[0047] If, after the settling period, the absolute decrease in pressure gauge reading P2 compared to the initial value P1 is less than a preset threshold, and the bulging shape of all gloves shows no significant change, then all gloves tested are deemed to have passed the airtightness test. It should be noted that the preset threshold can be set according to the sensor accuracy and safety margin, for example, 0.5 kPa or 1.0 kPa.

[0048] If the absolute value of the pressure drop exceeds a preset threshold, or if a glove shows obvious collapse when observed through the transparent chamber, the airtightness is deemed unqualified. When multiple gloves are tested simultaneously and only one leaks, the pressure gauge displays the overall pressure change. Although the absolute value of the pressure drop may not be as noticeable as when testing a single glove due to the cushioning effect of other intact gloves, visual comparison of the shape of each glove allows for quick identification of the specific failing glove. If a defective glove is found, it can be removed after releasing the negative pressure for individual verification or disposal.

[0049] Step S4: After the test is completed, slowly open the pressure relief valve 11 to allow air to enter the chamber 1 smoothly until the pressure gauge 51 reads atmospheric pressure. At this point, the pressure inside and outside the chamber is balanced, and the gloves return to their original position. Loosen the quick-locking clamps 22 on each connection port 2 to remove the gloves.

[0050] For example, suppose a substation maintenance team needs to conduct a centralized inspection of 8 pairs (16 pieces) of high-voltage insulating gloves in stock before carrying out spring maintenance. Using the four-station device of this invention, the operation process is as follows: The first round of testing involved four gloves: Operators A and B worked together. Operator A installed the gloves onto the four connectors as described above, while Operator B checked the tightness of the clamps. The entire process took approximately two minutes. The chamber door was then closed, and the testing began. Vacuuming was performed until the pressure gauge read -35.2 kPa, at which point the gloves inflated evenly. Vacuuming was stopped, and the reading was recorded. During the five-minute settling period, the operators observed through the transparent chamber that glove number 03 showed slight but persistent signs of collapse at the index finger area. Simultaneously, the pressure gauge reading rose to -34.1 kPa, ΔP = 1.1 kPa, exceeding the preset threshold of 1.0 kPa. After the settling period, the pressure relief valve was opened, and the pressure returned to zero. The result was: Glove number 03 failed; the other three passed. All gloves were removed, and glove number 03 was placed separately and labeled.

[0051] Rounds 2 through 4: Repeat the above procedure. In the third round of testing, the pressure gauge reading only changed from -34.8 kPa to -34.7 kPa, ΔP = 0.1 kPa, and all four gloves remained fully formed. Judgment: All four gloves passed this round.

[0052] The total time was approximately 36 minutes, which is (2 minutes for installation + 7 minutes for testing) x 4 rounds = 36. The testing of 16 gloves was completed, and one glove with a potential minor leak was identified.

[0053] The above description, in conjunction with the accompanying drawings, is a typical embodiment of a four-station testing device. The present invention is not limited to this specific form.

[0054] For small work teams or situations with a low workload, a simplified enclosure with two ports (two workstations) can be used to reduce cost and size. For large tool centers or locations requiring extremely high efficiency, enclosures with six, eight, or even more ports can be designed, with corresponding increases in enclosure size and vacuum pump power.

[0055] Based on the basic scheme of this invention, automation and intelligent judgment functions can be further integrated. For example, pressure sensor signals can be connected to a microprocessor. The microprocessor can automatically control the start and stop of the vacuum pump, automatically stopping pumping when the pressure reaches a preset value. During the resting phase, the microprocessor continuously records pressure data and automatically calculates pressure changes, comparing them with stored thresholds. Simultaneously, a small camera can be installed inside the chamber, combining image recognition algorithms to automatically analyze changes in the glove's bulging shape. Finally, the microprocessor can directly provide a "pass / fail" judgment result via an audible and visual alarm or a touchscreen, indicating the location of the unqualified glove, achieving complete automation and intelligence in the inspection process, further reducing the influence of human factors, and generating electronic inspection records.

[0056] The enclosure 1 can be a top-opening type, a front-opening type, or a drawer type. The transparent part can be the entire enclosure or a partial observation window. The foot support 15 can be replaced with swivel casters with brakes for easy movement within the workshop.

[0057] Compared to the traditional manual kneading method, the device and method described in this invention employ a high-precision pressure sensor for monitoring, transforming the judgment basis from vague "feelings" to precise pressure data. This eliminates misjudgments caused by personnel experience and environmental influences, reliably detecting even minute leaks and improving the accuracy and reliability of the detection. The multi-connection port design allows for the simultaneous installation and testing of multiple gloves (e.g., four), changing the traditional serial testing to parallel testing, increasing detection efficiency several times over. This is ideal for batch verification by work teams and rapid pre-operation inspections, saving significant manpower and time. The entire testing process is clear and simple to operate, with low dependence on personnel experience. Ordinary workers can operate the system with simple training, facilitating the promotion of unified testing standards within the power system. The transparent enclosure design allows operators to directly observe the overall shape of all gloves under negative pressure. Pressure data and visual observation corroborate each other, making the judgment more intuitive and facilitating the rapid identification of which specific glove has failed.

[0058] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A device for testing the airtightness of high-voltage insulating gloves, characterized in that, include: Box (1), the box (1) is provided with multiple connection ports (2) for installing and sealing the cuffs of the insulating gloves to be tested; Vacuum pump (3), the vacuum pump (3) is connected to the internal cavity of the box (1) through the air extraction pipe (4) and is used to evacuate the box (1); Pressure monitoring component (5) is used to monitor the pressure value of the cavity inside the housing (1) in real time; The box (1) is at least partially made of transparent material.

2. The high-voltage insulating glove airtightness testing device according to claim 1, characterized in that, Each of the aforementioned connection ports (2) includes: A cuff mounting sleeve (21) is provided on the outer wall of the box (1) to form an initial seal with the inner or outer wall of the cuff of the insulating glove; A locking mechanism (22) is used to apply a radial locking force to the cuff fitted onto the cuff mounting sleeve (21).

3. The high-voltage insulating glove airtightness testing device according to claim 2, characterized in that, The locking mechanism (22) is a quick-locking clamp.

4. The high-voltage insulating glove airtightness testing device according to claim 2, characterized in that, The material and cross-sectional shape of the cuff mounting sleeve (21) are customized to match the rubber cuff material of the insulating glove.

5. The high-voltage insulating glove airtightness testing device according to claim 1, characterized in that, The pressure monitoring component (5) includes a pressure sensor and a pressure gauge (51) connected to the pressure sensor. The pressure sensor is used to sense the pressure inside the cavity of the housing (1), and the pressure gauge (51) is used to display the pressure value sensed by the pressure sensor.

6. The high-voltage insulating glove airtightness testing device according to claim 1, characterized in that, The air extraction pipeline (4) is equipped with a pressure relief valve (11) for releasing the negative pressure inside the cavity of the box (1).

7. The high-voltage insulating glove airtightness testing device according to claim 1, characterized in that, The number of connection ports (2) is four, which are symmetrically arranged on the box body (1).

8. The high-voltage insulating glove airtightness testing device according to claim 1, characterized in that, The pumping speed of the vacuum pump (3) is configured to be uniform and stable in order to avoid impacting the insulating glove or causing its non-leakage deformation during the vacuuming process.

9. The high-voltage insulating glove airtightness testing device according to claim 1, characterized in that, The box (1) is provided with a door (12) for opening or closing the box (1), and a sealing ring (14) is provided between the door (12) and the box (1), and a foot support (16) is provided on the box (1) for support and movement.

10. A method for testing the airtightness of high-voltage insulating gloves, using the high-voltage insulating glove airtightness testing device as described in any one of claims 1 to 11, characterized in that, The method includes: The cuffs of multiple insulating gloves to be tested are respectively sealed and installed on multiple connection ports (2) of the device; Close the box (1), start the vacuum pump (3) to evacuate the cavity inside the box (1) until the internal pressure reaches a preset initial negative pressure value and then stop evacuating. The initial negative pressure value causes the insulating glove to bulge appropriately. Keep the box (1) in a sealed state for a preset time, and monitor and compare the pressure value change of the cavity inside the box (1) before and after standing by the pressure monitoring component (5); If the pressure drop during the resting period exceeds the preset threshold and the change in the bulging of the insulating glove is observed through the transparent part of the box (1), then the airtightness of the insulating glove is deemed unqualified. Conversely, if the airtightness is not satisfactory, then the airtightness is deemed acceptable.

Images