Electrical insulator extended protective cover structure

Abstract

The present invention proposes an extended protective cover structure for an electrical insulator, comprising an insulator insulating cover body, wherein the outer surface of the insulator insulating cover body is connected to a disk body, and a heat dissipation groove is provided on the upper surface of the disk body, and the heat dissipation groove is used for ventilation and heat dissipation; the inner wall of the insulator insulating cover body is provided with a sliding guide assembly, and the sliding guide assembly includes a guide groove, and the guide groove is provided on the inner wall of the insulator insulating cover body, and a limit rod is embedded in the interior of the guide groove, and an insulator insulating sleeve is also embedded in the interior of the guide groove, and the inner wall of the insulator insulating sleeve is connected to a locking limit clamp ring, and the locking limit clamp ring is an annular structure formed by an elastic member. The present invention adopts a sliding guide assembly in conjunction with a reset elastic member, which can automatically buffer and unload the force when the conductor dances, ice loads or wind forces cause lateral displacement, thereby avoiding the protective cover from falling off or dislocation caused by the rigid connection, and ensuring continuous and effective coverage of the live parts.

Description

Technical Field

[0001] The present invention relates to the technical field of insulator protective covers, in particular to an extended protective cover structure of an electrical insulator. Background Art

[0002] In power transmission and distribution systems, insulators play a critical role in supporting and insulating conductors, ensuring safe and stable current transmission. However, the live parts of insulators are constantly exposed to the external environment, exposed to various factors such as dust, moisture, ultraviolet light, and mechanical stress. This can not only degrade the insulation performance of the insulators but also pose the risk of electrical accidents. Therefore, effective protection of the live parts of insulators is crucial.

[0003] In contrast, Chinese patent publication number CN115732142A discloses an insulator shield. Its "S"-shaped fastening surface allows for flexible assembly and disassembly, avoiding obstructions. A water channel facilitates the removal of accumulated water, bird droppings, and other contaminants. Its "T"-shaped snap-on base and snaps ensure easy and secure assembly and disassembly. This insulator shield is an economical and practical composite insulator device that simplifies installation and disassembly, without interfering with subsequent maintenance in the line tower area. It significantly addresses the recurring problem of bird infestation on power lines.

[0004] Traditional insulator covers are typically attached to the insulator surface using fixed clips or bolts. These covers often use a simple wrapping method, securing the protective material to the insulator and cable with ropes or tape. This method is cumbersome to install and provides poor retention. Transmission lines are prone to conductor movement or stretching due to temperature fluctuations, icing loads, or wind. The rigid connection between traditional covers and insulators cannot accommodate such movement, causing the covers to fall off or become misaligned, resulting in a loss of effective coverage of live parts. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, and the present invention proposes an extended protective cover structure for an electrical insulator.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is that the electrical insulator extended protective cover structure includes an insulator insulating cover body, the outer surface of the insulator insulating cover body is connected to a disk body, and the disk body is provided with a heat dissipation groove, and the heat dissipation groove is used for ventilation and heat dissipation;

[0007] The inner wall of the insulator insulating cover is provided with a sliding guide assembly, and the sliding guide assembly includes a guide groove, and the guide groove is provided on the inner wall of the insulator insulating cover, and a limit rod is embedded in the guide groove, and an insulator insulating sleeve is also embedded in the guide groove, and the inner wall of the insulator insulating sleeve is connected with a locking limit clamp ring, and the locking limit clamp ring is an annular structure formed by an elastic member, and the outer surface of the locking limit clamp ring is covered with a wrapping cover, and the surface of the insulator insulating sleeve is connected with a mounting block, and the top of the mounting block is connected with a slider, and the inner wall of the disk body is fixedly connected with a sliding groove, and a reset elastic member is embedded in the sliding groove, one end of the reset elastic member is connected to the slider, and the slider is embedded in the sliding groove and maintains a horizontal sliding connection, and the slider passes through the interior of the sliding groove until it is embedded in the interior of the heat dissipation groove.

[0008] Furthermore, the locking limit clamp ring consists of two parts, the lower half of the locking limit clamp ring is embedded in the interior of the insulator insulating sleeve and is fixedly connected to the insulator insulating sleeve, the upper half of the locking limit clamp ring extends out of the insulator insulating sleeve, and the upper half of the locking limit clamp ring is provided with a notch, which is used for embedding the cable.

[0009] Furthermore, the insulator insulating cover is connected to the inside of the disc, the insulator insulating sleeve is initially embedded in the middle position of the disc, and the insulator insulating sleeve slides left and right inside the insulator insulating cover and the disc.

[0010] Furthermore, the portion of the slider embedded in the heat dissipation slot is provided with a cleaning brush for wiping off dust, the interior of the heat dissipation slot is provided with a filter for filtering dust, and the slider slides left and right inside the heat dissipation slot to clean the dust on the filter.

[0011] Furthermore, a locking assembly is fixedly connected to the inner wall of the insulating cover of the insulator, and the locking assembly includes a locking cover. The locking covers are provided on both the left and right sides of the insulating cover of the insulator.

[0012] Furthermore, a sealing ring is connected to the inner wall of the locking cover. The sealing ring is configured as a circular ring structure with an open top. The locking cover and the sealing ring are fixedly connected.

[0013] Furthermore, the cable is embedded in the interior of the sealing ring, and the sealing ring is wrapped around the outer surface of the cable. The sealing ring is used to fix the cable embedded in the insulating cover and the disc of the insulator.

[0014] Furthermore, the inner wall of the locking cover is configured to be arc-shaped, the locking cover and the wrapping cover are adapted to each other, and the insulator insulating sleeve is laterally moved so that the wrapping cover is embedded into the interior of the locking cover.

[0015] Furthermore, the opening of the locking cover on the side close to the insulator insulating sleeve is large, and the opening on the side away from the insulator insulating sleeve is small, and the inner wall of the locking cover is configured as follows: Truncated cone shape.

[0016] Furthermore, there are two groups of locking covers and wrapping covers, and the locking cover is in contact with only one group of wrapping covers at the same time.

[0017] Compared with the prior art, the beneficial effects of the present invention include: the use of a sliding guide assembly in conjunction with a reset elastic part can automatically buffer and unload force when lateral displacement occurs due to conductor dancing, ice load or wind force, avoiding the protective cover from falling off or dislocation caused by rigid connection, and ensuring continuous and effective coverage of live parts; secondly, the protective cover can automatically compensate for displacement and maintain insulation isolation under operational disturbances, avoiding the safety hazards of traditional fixing methods that expose live bodies when accidentally touched, and providing double protection for power operation and maintenance; finally, the locking assembly automatically increases the clamping force on the cable during the displacement process through the synergistic effect of the truncated cone-shaped locking cover and the elastic wrapping cover, forming a dynamic tightening effect, which not only ensures installation convenience but also significantly improves vibration resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0019] Figure 1 A schematic diagram of the structure of an extended protective cover of an electrical insulator according to one embodiment of the present invention is shown;

[0020] Figure 2 Schematically shows a schematic structural diagram of an insulator insulation cover body and a connecting hanger plate of an electrical insulator extension protective cover structure proposed in one embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the cross-sectional structure of an insulator cover and a disc body of an extended protective cover structure of an electrical insulator proposed in one embodiment of the present invention is shown;

[0022] Figure 4 Schematically shows a schematic structural diagram of an insulator insulating cover body and a locking cover of an electrical insulator extended protective cover structure proposed in one embodiment of the present invention;

[0023] Figure 5 Schematically shows a schematic structural diagram of a locking limit clamp ring and a wrapping cover of an electrical insulator extension protective cover structure proposed in one embodiment of the present invention;

[0024] Figure 6Schematically shows a schematic structural diagram of a locking limit clamp ring and a locking cover of an electrical insulator extension protective cover structure proposed in one embodiment of the present invention;

[0025] Figure 7 The figure schematically shows the structure of the locking cover and the sealing ring of the extended protective cover structure of the electrical insulator proposed in one embodiment of the present invention.

[0026] In the figure: 11. Insulator insulating cover; 12. Connecting hanger; 13. Disc; 14. Heat dissipation groove; 2. Sliding guide assembly; 21. Guide groove; 22. Limit rod; 23. Insulator insulating sleeve; 24. Locking limit clamp ring; 25. Wrapping cover; 26. Mounting block; 27. Sliding groove; 28. Reset elastic member; 29. ​​Slider; 3. Locking assembly; 31. Locking cover; 32. Sealing ring. DETAILED DESCRIPTION

[0027] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0028] According to one embodiment of the present invention, Figure 1-7 The structure of an extended protective cover for an electrical insulator is shown. It includes an insulator cover body 11, the outer surface of which is connected to a plate body 13. The plate body 13 is provided with heat dissipation slots 14 for ventilation and heat dissipation. In the power systems of some railway vehicles, insulators play a key role in supporting and insulating conductors. The protection of their live parts is directly related to the safety and stability of train operation. Railway vehicles face complex operating conditions such as severe vibration, impact, temperature changes, and aerodynamic effects during operation, which places higher demands on the performance of insulator protective covers.

[0029] The insulators of the contact network of the electrified railway are subjected to high voltage current for a long time. Especially under high load operation or fault conditions, local temperature rise may accelerate the aging of the insulation material. The heat dissipation grooves 14 are set to remove heat through air convection, maintaining the surface temperature of the insulator within a safe range. Secondly, under the temperature difference between day and night or in a humid environment, condensation water forms on the inner wall of the insulator insulating cover 11 and the disc 13, which may cause flashover on the surface of the insulator. The heat dissipation grooves 14 are provided on the disc 13 to accelerate the discharge of moisture and keep the interior dry. In addition, in the setting of the disc 13, the inner wall of the disc 13 is arc-shaped. When the outside air enters the inside of the disc 13 through the heat dissipation grooves 14, it is guided by the arc surface, so that the air can be transported to the inside of the insulator insulating cover 11 along the guidance of its inner wall, and finally transported out through the openings on both sides of the insulator insulating cover 11. The disc 13 can also better guide the internal air to provide good heat dissipation.

[0030] Insulator guards have a remarkable variety of functionalities in their practical applications. During normal operation, they tightly wrap around the insulator surface, forming a comprehensive physical barrier that effectively protects against environmental hazards such as contamination, bird damage, and ultraviolet radiation, thereby ensuring the long-term stable operation of the insulator and maintaining the reliable insulation performance of the power system. Furthermore, during live working, insulator guards play a critical role in insulation and isolation. Workers can precisely install them in specific locations to effectively isolate live objects, creating a safe working space for subsequent construction operations. This significantly improves the safety and convenience of live working and ensures the efficient operation and maintenance of power facilities.

[0031] The inner wall of the insulator insulating cover 11 is provided with a sliding guide assembly 2, which includes a guide groove 21. The guide groove 21 is provided on the inner wall of the insulator insulating cover 11. A limit rod 22 is embedded in the guide groove 21. An insulator insulating sleeve 23 is also embedded in the guide groove 21. The inner wall of the insulator insulating sleeve 23 is connected with a locking limit clamp ring 24. The locking limit clamp ring 24 is an annular structure formed by an elastic member. The locking limit clamp ring 24 consists of two parts. The lower half of the locking limit clamp ring 24 is embedded in the interior of the insulator insulating sleeve 23 and is fixedly connected to the insulator insulating sleeve 23. The upper half of the locking limit clamp ring 24 extends out of the insulator insulating sleeve 23. A notch is provided on the upper half of the locking limit clamp ring 24. The notch is used for embedding the cable. The insulator insulating cover 11 and the interior of the disk body 13 are connected. The insulator insulating sleeve 23 is initially embedded in In the middle position of the disk body 13, the insulator insulating sleeve 23 slides left and right inside the insulator insulating cover body 11 and the disk body 13, and the outer surface of the locking limit clamp ring 24 is covered with a wrapping cover 25. The surface of the insulator insulating sleeve 23 is connected with a mounting block 26, and the top of the mounting block 26 is connected with a slider 29. A sliding groove 27 is fixedly connected to the inner wall of the disk body 13, and a reset elastic member 28 is embedded in the sliding groove 27. One end of the reset elastic member 28 is connected to the slider 29. The slider 29 is embedded in the sliding groove 27 and maintains a horizontal sliding connection. The slider 29 passes through the sliding groove 27 until it is embedded in the heat dissipation groove 14. The part of the slider 29 embedded in the heat dissipation groove 14 is provided with a cleaning brush for wiping dust. The heat dissipation groove 14 is provided with a filter for filtering dust. The slider 29 slides left and right inside the heat dissipation groove 14 to clean the dust on the filter.

[0032] In the use of the protective cover, the cable needs to be embedded in the interior of the insulator insulating sleeve 23, and the cable is wrapped by the insulator insulating sleeve 23. After the insulator insulating sleeve 23 is embedded in the interior of the insulator insulating sleeve 23, the insulator is in the middle position of the insulator insulating sleeve 23. The insulator is wrapped by the insulator insulating sleeve 23 to increase the protection of the insulator. The specific operation is as follows:

[0033] First, insert the cable into the locking and limiting clamp ring 24 through the notch provided on the locking and limiting clamp ring 24. After the cable is inserted into the locking and limiting clamp ring 24, the locking and limiting clamp ring 24 clamps the cable surface to perform a preliminary clamping and fixing of the cable. Once the cable is fixed, the position of the insulator on the cable is also relatively limited.

[0034] In actual use, due to the diversity of the environment, branches break due to the influence of the environment, broken branches fall onto the cables, and birds affect the insulator insulating cover 11, which will cause the position of the insulator insulating cover 11 to change. Long-term external interference causes the connection to become loose. In order to avoid this problem, a sliding guide assembly 2 is provided between the insulator insulating sleeve 23 and the insulator insulating cover 11. When birds fly onto the insulator insulating cover 11, the force will cause the insulator insulating cover 11 to be displaced laterally. When the insulator insulating cover 11 and the connecting hanger 12 move laterally, the heat dissipation groove 14 and the mounting block 26 slide laterally. When the mounting block 26 slides laterally, the slider 29 slides inside the reset elastic member 28, compresses the sliding groove 27 after sliding, and then loses the force. When the locking limit clamp ring 24 is clamped on the cable, the positions of the locking limit clamp ring 24 and the insulator insulating sleeve 23 are limited. In order to release the force, the sliding groove 27 pushes the reset elastic member 28 to move. When the reset elastic member 28 moves, the disc 13 and the insulator insulating cover 11 are reset, thus completing the release of the force. By storing energy for the applied force and releasing it again after storage, and playing a buffering role, the insulator insulating cover 11 and the disc 13 are slidably connected with the insulator insulating sleeve 23 to release the force for buffering. In this way, the external force cannot directly act on the insulator insulating sleeve 23, so that the insulator insulating sleeve 23 can be better wrapped on the cable, and the two can still be more stably fixed.

[0035] In order to further enhance the fixing effect, the locking assembly 3 and the sliding guide assembly 2 are coordinated, and the specific operation is as follows:

[0036] The locking assembly 3 is fixedly connected to the inner wall of the insulator insulating cover 11. The locking assembly 3 includes a locking cover 31. Locking covers 31 are provided on the left and right sides of the insulator insulating cover 11. A sealing ring 32 is connected to the inner wall of the locking cover 31. The sealing ring 32 is set to a circular ring structure with an open top. The locking cover 31 and the sealing ring 32 are fixedly connected. The cable is embedded in the interior of the sealing ring 32. The sealing ring 32 is wrapped around the outer surface of the cable. The sealing ring 32 is used to fix the cable embedded in the insulator insulating cover 11 and the disk body 13. The inner wall of the locking cover 31 is set to an arc shape. The locking cover 31 is adapted to the wrapping cover 25. The insulator insulating sleeve 23 moves laterally so that the wrapping cover 25 is embedded in the interior of the locking cover 31. The opening of the locking cover 31 on the side close to the insulator insulating sleeve 23 is large, and the opening on the side away from it is small. The inner wall of the locking cover 31 is set to The locking cover 31 and the wrapping cover 25 are truncated cone-shaped, and there are two groups of locking covers 31 and wrapping covers 25. The locking cover 31 is in contact with only one group of wrapping covers 25 at the same time.

[0037] When the force acts on the insulator cover 11 and the disk body 13, the insulator cover 11 and the disk body 13 are displaced. When the insulator cover 11 and the disk body 13 move, the locking cover 31 and the sealing ring 32 are driven to move. When the locking cover 31 moves toward the side of the insulator insulating sleeve 23, the locking cover 31 will continuously squeeze the wrapping cover 25, squeezing the wrapping cover 25 to deform inward. When the wrapping cover 25 is squeezed inward by the locking cover 31 and deformed inward, the clamping force of the wrapping cover 25 on the cable becomes greater, so that the wrapping cover 25 can be better clamped on the cable. As the distance between them increases, the pushing distance of the locking cover 31 toward the side of the wrapping cover 25 becomes greater, so that the degree of squeezing of the wrapping cover 25 by the locking cover 31 becomes greater.

[0038] In another actual environment, in order to increase the safety of operation during live operation, the staff covers the protective cover on the cable, which can prevent accidental touching of the live part and increase the safety of operation. After the live part of the cable is embedded in the locking limit clamp ring 24, the cable can be initially fixed by the locking limit clamp ring 24. During operation, if the staff accidentally touches and pushes the insulator insulating cover 11 and the disk body 13, the disk body 13 will be displaced. When the insulator insulating cover 11 moves, it will drive the locking cover 31 and the sealing ring 32 to move. At this time, the locking cover 31 will squeeze the wrapping cover 25. Based on such an environment, the exposure of the live part can be reduced and the safety of operation can be increased. However, part of the traditional protective cover is directly covered on the live position and is not fixed. Such an incorrect operation will cause the protective cover and the live part to separate, posing a certain safety hazard. The other part is a rigid connection. When affected by the force, the force is directly transmitted to the cable, which will increase the load on the cable and, in severe cases, cause the cable to break.

[0039] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An electrical insulator extended protective cover structure, characterized in that: The cam is provided with a plurality of guide rails, and the guide rails are provided with a plurality of guide rails, and the guide rails are provided with a plurality of guide rails. The guide rails are provided with a plurality of guide rails, and the plurality of guide rails are provided with a plurality of guide rails. An elastic member, one end of the reset elastic member is connected to the slider, the slider is embedded in the interior of the sliding groove and maintains a transverse sliding connection, the slider passes through the interior of the sliding groove until it is embedded in the interior of the heat dissipation groove; in the use of the protective cover, the cable needs to be embedded in the interior of the insulator insulating sleeve, and the cable is wrapped by the insulator insulating sleeve. First, the cable is embedded in the interior of the locking limiting clamp ring through the notch provided on the locking limiting clamp ring. After the cable is embedded in the interior of the locking limiting clamp ring, it is clamped on the surface of the cable by the locking limiting clamp ring for preliminary clamping and fixing of the cable. When the cable is fixed, the insulator on the cable is relatively limited in position. When the locking limiting clamp ring is clamped on the cable, the positions of the locking limiting clamp ring and the insulator insulating sleeve are limited.

2. The electrical insulator extension protective cover structure according to claim 1, characterized in that: The locking and limiting clamp ring consists of two parts. The lower half of the locking and limiting clamp ring is embedded in the interior of the insulator insulating sleeve and is fixedly connected to the insulator insulating sleeve. The upper half of the locking and limiting clamp ring extends out of the insulator insulating sleeve. The upper half of the locking and limiting clamp ring is provided with a notch, which is used for embedding the cable.

3. The electrical insulator extension protective cover structure according to claim 2, characterized in that: The insulator insulating cover is connected to the inside of the disc body. The insulator insulating sleeve is initially embedded in the middle position of the disc body. The insulator insulating sleeve slides left and right inside the insulator insulating cover and the disc body.

4. The electrical insulator extension protective cover structure according to claim 1, wherein: The portion of the slider embedded in the heat dissipation slot is provided with a cleaning brush for wiping off dust, and a filter screen for filtering dust is provided inside the heat dissipation slot. The slider slides left and right inside the heat dissipation slot to clean the dust on the filter screen.

5. The electrical insulator extension protective cover structure according to claim 1, wherein: A locking assembly is fixedly connected to the inner wall of the insulator insulating cover, and the locking assembly includes a locking cover. The locking covers are arranged on both the left and right sides of the insulator insulating cover.

6. The electrical insulator extension protective cover structure according to claim 5, characterized in that: A sealing ring is connected to the inner wall of the locking cover. The sealing ring is configured as a circular ring structure with an open top. The locking cover and the sealing ring are fixedly connected.

7. The electrical insulator extension shield structure according to claim 6, wherein: The cable is embedded in the interior of the sealing ring, and the sealing ring is wrapped around the outer surface of the cable. The sealing ring is used to fix the cable embedded in the insulating cover and the disc of the insulator.

8. The electrical insulator extension protective cover structure according to claim 7, characterized in that: The inner wall of the locking cover is set to be arc-shaped, the locking cover and the wrapping cover are adapted to each other, and the insulator insulating sleeve moves laterally so that the wrapping cover is embedded in the interior of the locking cover.

9. The electrical insulator extension shield structure according to claim 8, wherein: The locking cover has a larger opening on the side close to the insulator insulating sleeve and a smaller opening on the side away from the insulator. The inner wall of the locking cover is configured as follows: Truncated cone shape.

10. The electrical insulator extension shield structure according to claim 9, wherein: There are two groups of locking covers and wrapping covers in total, and the locking cover is in contact with only one group of wrapping covers at the same time.

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