Insulation protection sleeve free of busbar disassembly, installation handle and sealing device

Abstract

The invention discloses a busbar-disassembly-free insulating protective sleeve, a mounting handle and a sealing device in the technical field of insulating accessories of electric power devices, the busbar-disassembly-free insulating protective sleeve comprises an insulating sleeve sheet and a supporting strip, the insulating sleeve sheet is made of a heat-shrinkable elastomer insulating material, and the supporting strip is made of a heat-shrinkable elastomer insulating material. The insulation sleeve sheet is curled towards one side and is closed into a barrel shape through a closed structure of butt joint edges on the two sides of the insulation sleeve sheet, the supporting strip is curled on the inner side of the insulation sleeve sheet along with the insulation sleeve sheet to support the barrel-shaped insulation sleeve sheet, a part to be insulated is rolled on the inner side of the supporting strip, and after the curled supporting strip is pulled out of the barrel-shaped insulation sleeve sheet, the part to be insulated is fixed on the supporting strip. The insulation sleeve sheet is directly shrunk and wound on the surface of a to-be-insulated part, and the insulation sleeve sheet is taken down from the to-be-insulated part after the closed structure of the butt joint edge is opened, so that the innovative design of the thermal shrinkage insulation protection sleeve solves the problems that the insulation protection sleeve of an AC installation busbar in the prior art is inconvenient to disassemble and needs to be heated, and the insulation protection sleeve is convenient to assemble and disassemble. The beneficial effects of installation without dismounting equipment and on-site cold installation are achieved.

Description

Technical Field

[0001] This application relates to the field of electrical equipment insulation accessories technology, specifically to an insulation protective sleeve, installation handle, and sealing device that eliminates the need for busbar disassembly. Background Technology

[0002] Busbars, busbars, and joints in substations normally require insulation protection, which significantly improves the electrical equipment's tolerance to high voltage and effectively prevents accidents such as breakdown, discharge, and short circuits. It also reduces the probability of accidents such as arcing, flashover, and electric shock, improving system reliability and significantly reducing the failure rate. One key process in installing busbar insulation materials is the installation of heat-shrinkable insulation sleeves. This process requires flame heating or other heating methods or special tooling to shrink the heat-shrinkable sleeves, which is very inconvenient. For example, patent document CN118849415A discloses a heating device for busbar heat-shrinkable sleeves. However, substations contain a large number of live equipment, including equipment containing insulating oil and SF6 gas. Hot work or heating operations may cause fires or explosions, and such actions must be strictly controlled. Furthermore, traditional installation of heat-shrinkable insulation sleeves requires disassembling the busbar and cannot be performed while the circuit is energized. Although there are currently non-disassembly methods, such as the non-disassembly heat-shrinkable tubing for conductive busbars disclosed in patent document CN201112592Y, heating is still required for installation. Furthermore, the insulation and enclosure structure of traditional busbars is mostly a one-time covering, requiring power outage construction and manual tightening, which has problems such as uneven enclosure, low efficiency and poor safety. Especially in continuous copper and aluminum busbar systems in substations, due to the long time and large workload of disassembling copper and aluminum busbars and the dense lines, it is often difficult to carry out effective enclosure operations. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this application provides a busbar insulation protective sleeve removal tool, installation handle, and sealing device that eliminate the need for busbar removal, thereby solving the problems of inconvenience and the need for heating in the aforementioned existing technologies.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A busbar-free disassembly-free insulating protective sleeve includes an insulating sleeve sheet and a support strip. The insulating sleeve sheet is made of heat-shrinkable elastomer insulating material. The insulating sleeve sheet is rolled to one side and closed into a cylindrical shape through the closed structure of the butt joint edges on both sides of the insulating sleeve sheet. The support strip is plate-shaped and uniformly attached to one side of the pre-processed and elongated insulating sleeve sheet. As the insulating sleeve sheet is rolled, the support strip supports the cylindrical insulating sleeve sheet inside the insulating sleeve sheet and rolls the part to be insulated inside it. After the rolled support strip is pulled out from the cylindrical insulating sleeve sheet, the insulating sleeve sheet directly shrinks and rolls over the surface of the part to be insulated. After the closed structure of the butt joint edges is opened, the insulating sleeve sheet is removed from the part to be insulated.

[0006] Preferably, the heat-shrinkable elastomer material is a blend of EPDM and polyolefin.

[0007] Preferably, the closing structure of the mating edge includes folded edges of equal width bent in the opposite direction of the curling direction from both sides of the insulating sleeve sheet and folded edge clamping members. The two folded edges are provided with protruding strips protruding outward from the mating seam. The folded edge clamping members are tubular pull strips with straight slits in the longitudinal direction. When the insulating sleeve sheet is closed, the two sides of the straight slits of the pull strip form clamping openings to clamp the two folded edges below the protruding strips. When the pull strip is removed from the insulating sleeve sheet, the closing structure of the insulating sleeve sheet is opened.

[0008] Preferably, the pull strip has grooves evenly distributed on the back side of the straight seam, perpendicular to the longitudinal length direction.

[0009] Preferably, the two opposing surfaces of the folded edges have interlocking inverted trapezoidal teeth.

[0010] Preferably, the support strip is made of an elastic material and is a curved plate formed by continuous Z-shaped strips.

[0011] Preferably, the elastic material is polyamide.

[0012] Preferably, the end of the support bar is provided with a pull handle extending outward from the opening surface of the insulating sleeve sheet.

[0013] Preferably, the pull bar is installed and removed from the insulating sheet via a mounting handle.

[0014] Based on the same inventive concept, this application also discloses an installation handle, including a main body, guide wheels and a pull plate. A pair of guide wheels are provided on one side of the main body. The guide wheels have parallel axes and opposite wheel surfaces. The minimum distance between the wheel surfaces corresponds to the thickness of the two folded edges of the aforementioned non-removable busbar insulating protective sleeve after they are attached. A pull plate is provided on the other side of the main body. The plane formed by the pull plate and the axis of the guide wheels is parallel and the thickness is less than the width of the pull groove of the pull strip of the aforementioned non-removable insulating protective sleeve.

[0015] Based on the same inventive concept, this application also discloses a busbar-free disassembly-free insulating sealing device, including an insulating sealing plate, a central rack, and a traveling mechanism. The insulating sealing plate is closed into a ring shape by connecting side racks on both sides. The root of the side racks extends outward with a track. The insulating sealing plate has an opening on the outer side of the side rack end. The opening is connected to a rack groove for accommodating the central rack on the opening side of the insulating sealing plate. The insulating sealing plate has mutually attracting magnetic components on both sides of the outer edge of the side rack end. The central rack slides out of the rack groove and meshes with the side racks on both sides. The end of the central rack that slides into the rack groove is connected to the traveling mechanism. The traveling mechanism is remotely controlled to move along the track to realize the meshing operation of the central rack and the side racks.

[0016] Preferably, the rack is made of a toothed elastic insulating material.

[0017] Preferably, the middle rack has a hook extending upward from the end that slides towards the rack groove. The traveling mechanism includes a drive assembly, a transmission assembly, and a guide wheel. The guide wheel's surface is pressed against the outside of the track. The drive assembly includes a traction hook, a jumper bridge, a drive motor, and a remote control receiver module. The traction hook is fixedly connected to the jumper bridge and hooked onto the hook. The bottom sides of the jumper bridge are fixed to the guide wheel via connecting arms and guide wheel shafts. The remote control receiver module receives remote control signals and controls the drive motor to drive the guide wheel to roll on the track through the transmission assembly, thereby causing the middle rack to slide from the near-open end to the far-open end of the side rack.

[0018] Compared to existing technologies, this solution offers several advantages: The busbar-free insulation sleeve, with its open structure design, can directly wrap around the busbar or connector from the side. This eliminates the need to disconnect cables, busbars, or joints during installation, making it highly adaptable and suitable for on-site modifications in space-constrained, structurally complex, or non-removable locations. It allows for rapid insulation encapsulation, saving cumbersome steps like "disassembly," "threading," and "reconnection" compared to traditional heat-shrink tubing. Single-point installation typically takes about 10 minutes, significantly reducing preparation time and improving construction efficiency. Installation is possible even without free ends, a pioneering application in substations. During on-site maintenance, the insulating sleeve can be removed by pulling the pull bar and then reinstalled after maintenance. Furthermore, the use of elastic shrinkable material in the insulating sleeve allows for cold-applied installation, reducing thermal impact on surrounding electrical equipment. Prefabricated outside the substation before installation avoids hot work permit procedures, enhancing safety and eliminating the need for hot work operations. Therefore, it has significant practical advantages in power systems, especially in substation renovation or maintenance. Substations connect power plants, transmission lines, and users, serving as the central hub for power conversion, distribution, and dispatch, supplying power to tens or even millions of users. Installing heat-shrink sleeves without dismantling busbars or applying open flames becomes an "online insulation enhancement measure" under the "rapid protection insulation renovation" approach. This application is applicable to insulation protection of low-voltage sides of substations at voltage levels of 35kV and below, especially suitable for short-term power outage operations without dismantling busbars or applying open flames. It exhibits good electrical properties, corrosion resistance, and aging resistance, and reliable insulation performance. To consider live-line installation, this application also designs an installation tool. When the installation handle is pulled towards the closing direction of the mating edge, the guide wheel tightens the mating edge, reducing the gaps on both sides of the opening of the insulating sleeve sheet's mating edge, facilitating the sliding of the pull strip. The busbar-free insulation sealing device, through a combination of a plate-like interlocking structure and an automatic meshing sealing mechanism, allows for the replacement of insulation protective sleeves and automatic sealing of busbars without interrupting power supply or without disassembling copper or aluminum busbars, thus not affecting power system operation. The automatic walking meshing structure avoids human error and improves installation efficiency; the magnetic structure assists in positioning, enhancing installation convenience and sealing effect; it can also be expanded with a modular design to adapt to busbars of different sizes and wiring densities. The novel structure and strong adaptability make it particularly suitable for complex, continuous wiring substation busbar systems, while remote control operation enhances the safety of live-line work, making it a powerful supplement and upgrade to traditional insulation protection technologies. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the insulation sleeve sheet closed by pulling the pull bar, as an embodiment of the busbar-free disassembly and insulation sleeve disassembly scheme of this solution.

[0020] Figure 2a This is a three-dimensional structural diagram of an embodiment of the solution that eliminates the need for disassembling the insulating protective sleeve on the busbar, showing the installation process using an installation handle on a circular busbar.

[0021] Figure 2b This is a three-dimensional structural diagram of a solution for eliminating the need to remove the insulating protective sleeve from the busbar, showing the completed installation on a circular busbar.

[0022] Figure 2c This is a three-dimensional structural diagram of an embodiment of the solution that eliminates the need for busbar disassembly of the insulating protective sleeve, showing how the pull bar can be removed by pulling the installation handle after installation on a circular busbar.

[0023] Figure 3a This is a three-dimensional structural diagram of an embodiment of the solution that eliminates the need for disassembling the insulating protective sleeve on the busbar, showing the installation process using an installation handle on a rectangular busbar.

[0024] Figure 3b This is a three-dimensional structural diagram of a solution for eliminating the need to remove the insulating protective sleeve from the busbar, showing the completed installation on a rectangular busbar.

[0025] Figure 3c This is a three-dimensional structural diagram of an embodiment of the busbar-free insulation protective sleeve solution, showing how the pull bar is removed by pulling the installation handle after installation on a rectangular busbar.

[0026] Figure 4 for Figure 3b Cross-sectional view;

[0027] Figure 5 This is a three-dimensional structural diagram of the support bar from the inner side view of an embodiment of the busbar-free disassembly insulation protective sleeve solution of this scheme.

[0028] Figure 6 This is a three-dimensional structural diagram of the installation handle and pull bar in one embodiment of the solution for removing the insulation protective sleeve without busbar;

[0029] Figure 7 This is a three-dimensional structural diagram of the rack pulled out to the far end of the opening and facing the near end of the opening in one embodiment of the busbar-free disassembly insulation enclosure device of this solution.

[0030] Figure 8a This is a schematic cross-sectional view of an embodiment of the busbar-free insulation enclosure device of this solution, showing the rack inside the insulation enclosure plate being accommodated in the rack groove at the open end;

[0031] Figure 8b This is a cross-sectional view of the internal rack of the insulation sealing plate being pulled out to the far end of the opening, as an embodiment of the busbar-free insulation sealing device of this solution.

[0032] Figure 9This is a three-dimensional structural diagram of the rack pulled out to the far end of the opening, facing the far end of the opening, in one embodiment of the busbar-free disassembly insulation enclosure device of this solution.

[0033] Figure 10 This is a detailed, enlarged, three-dimensional structural diagram of the rack pulled out to the far opening end of the insulation enclosure device for the busbar-free disassembly solution, which hides the transmission box cover and the connecting arm on that side.

[0034] Among them, 1a-rectangular busbar, 1b-circular busbar, 2-insulating sleeve sheet, 21-folded edge, 22-convex strip, 23-tooth, 3-support strip, 31-press handle, 4-pull strip, 41-pull groove, 5-installation handle, 51-guide wheel, 52-pull plate, 6-insulating sealing plate, 61-magnetic suction assembly, 62-track, 64-rack groove, 641-opening, 65-side rack, 65a-first side rack, 65b-second side rack, 7-middle rack, 71-hook, 8-traveling mechanism, 811-traction hook, 812-bridge, 813-motor cover, 821-gear assembly, 822-transmission box, 831-guide wheel. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0036] The busbar non-removable insulating protective sleeve of this application includes an insulating sleeve sheet 2 and a support strip 3. The insulating sleeve sheet 2 uses a heat-shrinkable elastomer insulating material, which ensures that the insulating sleeve sheet 2 has the characteristics of heat shrinkage and cold construction. Using pre-expansion technology, it can shrink at room temperature by elastic recoil force. In this embodiment, the material uses a blend of EPDM and polyolefin, or other materials such as a blend of silicone rubber and polyolefin. The insulating sleeve sheet 2 can be prefabricated outside the substation or pre-formed according to the shape of the insulating component to be wrapped. The pre-formed shape can include cylindrical, flat cylindrical, square cylindrical, rectangular cylindrical, triangular, hexagonal, octagonal, and other polygonal cylindrical shapes. After the insulating sleeve sheet 2 is subjected to accelerator irradiation, it can be expanded to 4-5 times its original width and then fixed and supported by the support strip 3. The inner side of the rolled insulating sleeve sheet 2 can be provided with a matching concave structure according to the shape of the support strip 3.

[0037] The insulating sheet 2 is rolled to one side and closed into a cylindrical shape by the closing structure of the mating edges on both sides of the insulating sheet 2. The support strip 3 is plate-shaped and uniformly attached to one side of the pre-processed and elongated insulating sheet 2. As the insulating sheet 2 is rolled, it supports the cylindrical insulating sheet 2 inside the insulating sheet 2 and rolls the component to be insulated inside it. In this embodiment, the component to be insulated is exemplified by two types: rectangular busbar 1a and circular busbar 1b. The component to be insulated includes, but is not limited to, busbars, cables, or connectors. After the rolled support strip 3 is pulled out from the cylindrical insulating sheet 2, the insulating sheet 2 directly shrinks and rolls over the surface of the component to be insulated. After the closing structure of the mating edges is opened, the insulating sheet 2 is removed from the component to be insulated. The closing structure of the mating edges on both sides can be repeatedly sealed and opened.

[0038] The closing structure of the mating edge can use different structures such as a snap-on zipper structure with convex edges and grooves, a zipper structure, or an overlapping hook and loop fastener. For ease of manufacturing, the closing structure of the mating edge in this embodiment is a folded edge clamping structure, including folded edges 21 of equal width bent from both sides of the mating edge of the insulating sleeve sheet 2 in the opposite direction of the curling direction and folded edge clamping members. The edges of the two folded edges 21 are provided with a semi-circular cross-section protruding from the outside of the mating seam. The protruding edge 22 is located below... The insulating sleeve sheet 2 on both sides forms a groove. The folding edge clamping member uses a tubular pull rod 4 with a straight slit in the longitudinal direction. During installation, the insulating sleeve sheet 2 is rolled up, and the straight slit of the pull rod 4 is inserted from one end of the insulating sleeve sheet 2 into the groove below the protrusion 22. When the insulating sleeve sheet 2 is closed, the two sides of the straight slit of the pull rod 4 form a clamping opening to clamp the two folded edges 21 below the protrusion 22. When the pull rod 4 is removed from the insulating sleeve sheet 2, the closed structure of the insulating sleeve sheet 2 opens. The folding edge clamping member can also use other structural forms such as teardrop shape or triangular pull rod. The width of the clamping opening should match the thickness of the two folded edges 21 after they are attached. In order to facilitate pulling the pull rod 4 and to allow for installation while the circuit is live, the pull rod 4 in this embodiment has a semi-circular pull groove 41 evenly opened on the back side of the straight slit, perpendicular to the longitudinal length direction, to facilitate installation and removal from the insulating sleeve sheet 2 using the installation handle 5.

[0039] In order to ensure that the two folded edges 21 are accurately positioned and tightly fitted, in this embodiment, the two folded edges 21 have interlocking inverted trapezoidal teeth 23 on their opposite surfaces. The inverted trapezoidal teeth 23 make the two folded edges 21 fit together with appropriate tightness.

[0040] To allow the support strip 3, which serves as the skeleton, and the insulating sheet 2 to be rolled synchronously, the perimeter of the support strip 3 is slightly smaller than that of the insulating sheet 2. The support strip 3 is made of an elastic material; in this embodiment, polyamide is used, but other materials can also be used. The support strip 3 is a curved plate formed by continuous Z-shaped strips. To facilitate pulling out the support strip 3, a pull handle 31 extending outward from the opening of the insulating sheet 2 is provided at the end of the support strip 3. Simultaneously or after installing the pull strip 4, the support strip 3 can be pressed inward to reduce its diameter during rolling, and then the support strip 4 can be slowly pulled outward from the opening of the insulating sheet 2, gradually pulling it out from the inner layer of the insulating sheet 2. After the insulating sheet 2 leaves the support strip 4, it begins to retract, shrinking onto the inner metal strip. The support strip 3 can also use other shapes, such as longitudinally braided strips, to facilitate extraction from the insulating sheet 2. When the pull handle 31 is not used, the support bar 3 can also be set to have a longitudinal length longer than the insulating sleeve sheet 2, and a pull-out structure can be set on the support bar 3 itself.

[0041] The expanded insulating sleeve 2 can be shrunk by heat or at room temperature. It can be shrunk at room temperature and attached to the rectangular busbar 1a, circular busbar 1b, and joints of the equipment, with stable sealing and insulation performance. Alternatively, the insulating protective sleeve of the busbar can be placed on the line for heat shrinking without disassembly.

[0042] Based on the same inventive concept, this application also discloses an installation handle 5, which includes a main body, guide wheels 51, and a pull plate 52. A pair of guide wheels 51 are provided on one side of the main body. The guide wheels 51 have parallel axes and opposite wheel surfaces. The minimum distance between the wheel surfaces corresponds to the thickness of the two folded edges 21 of the aforementioned non-removable insulating protective sleeve after they are fitted together. A pull plate 52 is provided on the other side of the main body. The plane formed by the pull plate 52 and the axis of the guide wheels 51 is parallel, and its thickness is less than the width of the groove 41 of the pull strip 4 of the aforementioned non-removable insulating protective sleeve. When the installation handle 5 is pulled in the closing direction of the mating edge, the guide wheels 51 tighten the mating edge, reducing the gap on both sides of the opening of the mating edge of the insulating sleeve sheet 2, facilitating the sliding of the pull strip 4. To remove the pull strip 4, it can be pulled out to either side to remove the insulating sleeve sheet 2.

[0043] Based on the same inventive concept, this application also discloses a busbar-free disassembly-free insulating sealing device, including an insulating sealing plate 6, a central rack 7, and a traveling mechanism. The insulating sealing plate 6 is closed into a ring shape by the mating edge racks 65 on both sides, and is made of flexible composite high-polymer heat-resistant insulating material, with an overall elongated structure. The mating edge racks 65 on both sides have a serrated interlocking design. The side rack 65 has a track 62 extending outward from its root. The insulating sealing plate 6 has an opening 641 on the outer side of the end of the side rack 65. The opening 641 is connected to a rack groove 64 for accommodating the middle rack 7. In this embodiment, the rack groove 64 extends vertically from the opening 641 to the downward bending edge and then extends along the downward bending edge to the side of the insulating sealing plate 6 away from the opening 641. The rack groove 64 can also be arranged in other suitable shapes. In this embodiment, the upper half of the insulating sealing plate 6 with the rack groove 64 is fixed to the first side rack 65a, and the upper half of the insulating sealing plate 6 without the rack groove 64 is fixed to the second side rack. 65b, the insulating sealing plate 6 is provided with magnetic attraction components 61 on both sides of the outer edge of the side rack 65. The magnetic attraction components 61 use strong magnets to achieve adsorption and positioning of the upper half of the left and right insulating sealing plates 6 during installation. When the upper half of the two insulating sealing plates 6 are close together, the magnets attract each other, fixing the upper half of the insulating sealing plates 6 together and thus attaching the upper half of the two insulating sealing plates 6 to the surface of the rectangular busbar 1a. The middle rack 7 slides out from the rack groove 64 and meshes with the side racks 65 on both sides. The end of the middle rack 7 that slides into the rack groove 64 is connected to a walking mechanism. The walking mechanism is remotely controlled to move along the track 62 to realize the meshing operation of the middle rack 7 and the side racks 65.

[0044] In this embodiment, the side rack 65 is a rigid rack, while the middle rack 7 uses a toothed elastic insulating material. The surface tooth shape matches the left and right side racks 65, allowing them to engage and close. In this embodiment, the teeth of both the middle rack 7 and the side rack 65 are in the direction of pulling towards the side rack 65, facilitating unidirectional forward locking installation of the busbar-free insulating enclosure. Other shapes can also be used, such as those facilitating disassembly or simultaneous installation and disassembly.

[0045] Various methods can be used to implement the walking device, such as pneumatic and electric. In this embodiment, electric control is used. The middle rack 7 has a hook 71 extending upward from the end of the rack groove 64 that slides towards it. The walking mechanism includes a drive assembly, a transmission assembly, and two guide wheels 831 on both sides of the track 62. The wheel surfaces of the guide wheels 831 are pressed against the outside of the track 62. One of the two guide wheels 831 is a drive wheel, and the other is a driven wheel. The drive assembly includes a traction hook 811, a bridge 812, a miniature drive motor, and a remote control receiving module. The traction hook 811 is fixedly connected to the bridge 812 and hooked onto the hook 71. The bottom sides of the bridge 812 are fixed to the guide wheels 831 by connecting arms and guide wheel shafts. The remote control receiving module receives remote control signals and controls the drive motor to drive the drive wheel in the guide wheel 831 through the transmission assembly, and then drive the driven wheel to roll on the track 62 through the bridge 812, thereby driving the middle rack 7 to slide from the end of the side rack 65 near the opening 641 to the end of the far opening 641. In this embodiment, a single drive motor is used. The motor shaft is encapsulated together with the remote control receiver module in a motor cover 813 on one side of the first rack 65a. The lower part of the motor shaft drives the drive wheel in the guide wheel 831 on one side of the first rack 65a through a transmission assembly. In this embodiment, the transmission assembly includes a gear assembly 821 and a transmission box 822. The transmission box 822 includes a base plate and a top cover. The motor shaft of the drive motor extends downward through the top cover into the transmission box 822. The gear assembly 821 includes a gear on the motor shaft, a transmission gear with its shaft fixed to the base plate, and a gear on the drive wheel. The shaft of the drive wheel is fixed to the bridge 812 through a connecting arm. This embodiment uses a single drive motor scheme with a drive wheel driving the driven wheel. A scheme with two drive motors, each with its own drive wheel, can also be used. The remote control receiver module can receive remote control signals using Bluetooth, wireless LAN, infrared, cellular communication, or other methods.

[0046] In use, the upper half of the insulating sealing plate 6 is attached to both sides of the rectangular busbar 1a, and the side racks 65 are aligned. The magnetic assembly 61 is used for initial docking and positioning. Then, a remote control signal is received to start the traveling mechanism, pushing the central rack 7 along the track 62 towards the far opening 641. During this movement, the central rack 7 pushes the side racks 65 to engage tooth by tooth, forming a continuous and tight engagement, completing the sealing. The traveling mechanism stops upon reaching the set endpoint, completing the insulation sealing of the copper and aluminum busbars. Limit stop devices can also be used for automatic control.

[0047] In this specification, the schematic diagrams in the accompanying drawings highlight the main features and key parts, and details are appropriately simplified or omitted. Therefore, they do not represent actual scale and size relationships. The terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, 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.

[0048] The above description is only a preferred embodiment of the present solution, but the scope of protection claimed by the present solution is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A busbar-free insulating protective sleeve, characterized in that: The device includes an insulating sleeve sheet (2) and a support strip (3). The insulating sleeve sheet (2) is made of heat-shrinkable elastomer insulating material. The insulating sleeve sheet (2) is rolled up to one side and closed into a cylindrical shape through the closed structure of the two mating edges of the insulating sleeve sheet (2). The support strip (3) is plate-shaped and uniformly attached to one side of the pre-processed and extended insulating sleeve sheet (2). As the insulating sleeve sheet (2) is rolled up, it supports the cylindrical insulating sleeve sheet (2) inside the insulating sleeve sheet (2) and rolls the part to be insulated inside it. After the rolled support strip (3) is pulled out from the cylindrical insulating sleeve sheet (2), the insulating sleeve sheet (2) directly shrinks and rolls over the surface of the part to be insulated. After the closed structure of the mating edges is opened, the insulating sleeve sheet (2) is removed from the part to be insulated.

2. The busbar-free disassembly-free insulating protective sleeve according to claim 1, characterized in that: The heat-shrinkable elastomer material is a blend of EPDM and polyolefin.

3. The busbar-free disassembly-free insulating protective sleeve according to claim 1, characterized in that: The closing structure of the mating edge includes folded edges (21) of equal width that are bent in the opposite direction to the curling direction from both sides of the mating edge of the insulating sleeve sheet (2) and folded edge clamping members. The edges of the two folded edges (21) are provided with protruding strips (22) that protrude outward from the mating seam. The folded edge clamping members are tubular pull strips (4) with straight slits in the longitudinal direction. When the insulating sleeve sheet (2) is closed, the pull strips (4) form clamps on both sides of the straight slits to clamp the two folded edges (21) below the protruding strips (22). When the pull strips (4) are removed from the insulating sleeve sheet (2), the closing structure of the insulating sleeve sheet (2) is opened.

4. The busbar-free disassembly-free insulating protective sleeve according to claim 3, characterized in that: The pull strip (4) has grooves (41) evenly cut on the back side of the straight seam, perpendicular to the longitudinal length direction.

5. The busbar-free disassembly-free insulating protective sleeve according to claim 3, characterized in that: The two flanges (21) have interlocking inverted trapezoidal teeth (23) on their opposite surfaces.

6. The busbar-free disassembly-free insulating protective sleeve according to claim 1, characterized in that: The support bar (3) is made of an elastic material and is a curved plate formed by continuous Z-shaped bars.

7. The busbar-free disassembly-free insulating protective sleeve according to claim 6, characterized in that: The elastic material used is polyamide.

8. The busbar-free disassembly-free insulating protective sleeve according to claim 6, characterized in that: The end of the support bar (3) is provided with a pull handle (31) extending outward from the opening surface of the insulating sleeve sheet (2).

9. The busbar-free disassembly-free insulating protective sleeve according to claim 4, characterized in that: The pull bar (4) is installed and removed from the insulating sheet (2) by means of the mounting handle (5).

10. A mounting handle, characterized in that: The device includes a main body, guide wheels (51), and a pull plate (52). A pair of guide wheels (51) are provided on one side of the main body. The guide wheels (51) have parallel axes and face each other. The minimum distance between the wheel faces corresponds to the thickness of the two folded edges (21) of the non-disassembly-removable insulating protective sleeve described in claim 3 after they are fitted together. A pull plate (52) is provided on the other side of the main body. The plane formed by the pull plate (52) and the axis of the guide wheels (51) is parallel and the thickness is less than the width of the groove (41) of the pull strip (4) of the non-disassembly-removable insulating protective sleeve described in claim 4.

11. A busbar-free insulation sealing device, characterized in that: The device includes an insulating sealing plate (6), a central rack (7), and a traveling mechanism. The insulating sealing plate (6) is closed into a ring shape by connecting two side racks (65). The root of the side rack (65) extends outward with a track (62). The insulating sealing plate (6) has an opening (641) on the outer side of the end of the side rack (65). The opening (641) is connected to a rack groove (64) for accommodating the central rack (7) on the side of the opening (641) of the insulating sealing plate (6). The insulating sealing plate (6) has magnetic suction components (61) that attract each other on both sides of the outer edge of the end of the side rack (65). The central rack (7) slides out from the rack groove (64) and meshes with the side racks (65) on both sides. The end of the central rack (7) that slides into the rack groove (64) is connected to a traveling mechanism. The traveling mechanism is remotely controlled to move along the track (62) to realize the meshing operation of the central rack (7) and the side rack (65).

12. The busbar-free disassembly-free insulating sealing device according to claim 11, characterized in that: The toothed rack (7) uses a toothed elastic insulating material.

13. The busbar-free disassembly-free insulating sealing device according to claim 12, characterized in that: The central rack (7) has a hook (71) extending upward from the side end that slides toward the rack groove (64). The walking mechanism includes a drive assembly, a transmission assembly, and a guide wheel (831). The guide wheel (831) has its wheel surface pressed against the outside of the track (62). The drive assembly includes a traction hook (811), a bridge (812), a drive motor, and a remote control receiving module. The traction hook (811) is fixedly connected to the bridge (812) and hooked onto the hook (71). The guide wheel (831) is fixed at the bottom of both sides of the bridge by connecting arms and the guide wheel shaft. The remote control receiving module receives remote control signals and controls the drive motor to drive the guide wheel (831) to roll on the track (62) through the transmission assembly, thereby driving the central rack (7) to slide from the end of the side rack (65) near the opening (641) to the end of the far opening (641).

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