Cable head insulation protective cover of high-voltage ring main unit

Abstract

The utility model discloses a cable head insulation protective cover of a high-voltage ring main unit, and particularly relates to the technical field of cable head protection technology, which comprises a cable conductor, one side of the cable conductor is fixedly connected with a wiring terminal, the other side of the cable conductor is fixedly connected with a cable, and the outer side of the cable conductor is provided with two limiting holes. A protection mechanism is arranged outside the cable conductor; the protection mechanism comprises an outer ring, the inner side of the outer ring is slidably connected with the outer side of the cable conductor, the outer side of the outer ring is fixedly connected with two first insulation protection shells, and the outer sides of the first insulation protection shells are slidably connected with three second insulation protection shells. According to the utility model, through the sliding fit of the insulating protective shells I, II and III, the wrapping protection of cable conductors and wiring terminals with different lengths is realized, and the heat dissipation efficiency is improved through the multi-opening design; meanwhile, the outer ring and the first insulating protective shell can be quickly separated from the cable conductor through clamping of the double inserting rods, the replacement process of the protective cover is simplified, and the advantages of expansion adaptability and convenient maintenance are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable head protection technology, and more specifically, to an insulating protective cover for cable heads of high-voltage ring main units. Background Technology

[0002] According to the requirements of standards such as the "Installation Operation Guidelines for Main Transformers of Southern Power Grid" and the "Construction Technology Control Specifications for Southern Power Grid Projects", in the construction of 10KV distribution network projects, all exposed live electrical parts must be insulated to ensure the operational safety of maintenance personnel and to prevent animals from climbing onto the exposed live parts and causing short circuits and malfunctions.

[0003] When existing insulated cable ends are not in use, they need to be stored. However, the current storage method for insulated cable ends is generally poor, as they are mostly placed in cabinets or boxes, which provides inadequate protection and can easily lead to accidental damage to the insulated cable ends.

[0004] A search revealed a Chinese patent with publication number CN215183166U that discloses an insulated cable end protective cover. This utility model can protect the cable end separately when it is not in use, thereby improving the protection effect of the cable end, reducing accidental damage to the cable end, extending the service life of the cable end, and ensuring the effectiveness of the cable end during use, thus further meeting people's usage needs.

[0005] However, in actual use, when installing or replacing cable heads, the lengths of the cable heads may vary, which means that some cable head protective covers need to be specially customized, increasing the cost of using the protective covers and reducing their applicability. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, this utility model provides a cable head insulation protective cover for a high-voltage ring main unit to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An insulating protective cover for the cable head of a high-voltage ring main unit includes a cable conductor. A terminal block is fixedly connected to one side of the cable conductor, and a cable is fixedly connected to the other side. Two limiting holes are formed on the outer side of the cable conductor, and a protective mechanism is provided on the outer side of the cable conductor. The protective mechanism includes an outer ring, the inner side of which is slidably connected to the outer side of the cable conductor. Two insulating protective shells (first type) are fixedly connected to the outer side of the outer ring. Three insulating protective shells (second type) are slidably connected to the outer side of the first insulating protective shell, and one of the second insulating protective shells is slidably connected to an insulating protective shell (third type). Two push handles are fixedly connected to the outer side of the third insulating protective shell. A protective washer is fixedly connected to one end of the push handle. Multiple support blocks are fixedly connected to the inner side of the protective washer. Multiple openings are provided on the outer sides of the first, second, and third insulating protective shells. Multiple rubber balls are fixedly connected to the inner sides of the second and third insulating protective shells. Multiple locking holes are provided on the outer sides of the first and second insulating protective shells. Multiple sliding grooves are provided on the outer surfaces of the first and second insulating protective shells. Multiple sliders are fixedly connected to the inner sides of the second and third insulating protective shells. The outer sides of the sliders are slidably connected to the inner sides of the sliding grooves. A splitting mechanism is provided on the outer side of the outer ring.

[0009] By adopting the above technical solution, the extension lengths of the three insulating protective shells (shell 1, shell 2, and shell 3) can be adjusted according to the actual length of the cable conductor to provide better protection for the cable conductor and improve the practicality of the protective cover.

[0010] As a further description of the above technical solution: the splitting mechanism includes two outer cylinders, the outer side of the outer cylinder is slidably connected to the inner side of the outer ring, a spring is fixedly connected to the inner side of the outer cylinder, a push block is fixedly connected to the bottom of the spring, the outer side of the push block is slidably connected to the inner side of the outer cylinder, an insertion rod is fixedly connected to the inner side of the push block, the outer side of the insertion rod is slidably connected to the inner side of the outer cylinder, the bottom end of the insertion rod is engaged with the inner side of the limiting hole, and a pull plate is fixedly connected to the top of the insertion rod.

[0011] By adopting the above technical solution, the outer ring can be removed from the outside of the cable conductor by using the insertion rod to limit the position of the outer ring and the cable conductor, so that the protective cover can be replaced.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. By setting up a protective mechanism, compared with the existing technology, the mutual sliding of insulating protective shell one, insulating protective shell two and insulating protective shell three allows it to extend and retract to protect the outside of cable conductors and terminals of different lengths. Multiple openings are used to dissipate heat on the inside and outside of the cable conductors, increasing the protective area of ​​the protective cover and enhancing its practicality.

[0014] 2. By setting up a splitting mechanism, compared with the existing technology, the outer ring and the insulating protective shell can be removed from the outside of the cable conductor by using two plugs to snap them together, thereby reducing the number of steps to replace the protective cover and improving the efficiency of replacing the protective cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the protective mechanism structure of this utility model.

[0017] Figure 3 This is a partial schematic diagram of the connection between the outer ring and the protective shell of this utility model.

[0018] Figure 4 This is a partial schematic diagram of the connection between the cable conductor and the terminal block of this utility model.

[0019] Figure 5 This is a partial schematic diagram of the connection between the protective shell and the slider of this utility model.

[0020] Figure 6 This is a partial schematic diagram of the connection between the protective shell and the protective gasket of this utility model.

[0021] The attached diagram is labeled as follows: 1. Cable conductor; 2. Terminal block; 3. Cable; 4. Limiting hole; 5. Outer ring; 6. Insulating protective shell one; 7. Insulating protective shell two; 8. Insulating protective shell three; 9. Push handle; 10. Protective washer; 11. Support block; 12. Opening; 13. Rubber ball; 14. Slide groove; 15. Sliding block; 16. Outer cylinder; 17. Spring; 18. Push block; 19. Insert rod; 20. Pull plate; 21. Locking hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The embodiments disclosed in this application are as follows: Figure 1-6The cable head insulation protective cover of a high-voltage ring main unit shown includes a cable conductor 1, a terminal block 2 fixedly connected to one side of the cable conductor 1, a cable 3 fixedly connected to the other side of the cable conductor 1, two limiting holes 4 opened on the outer side of the cable conductor 1, and a protective mechanism provided on the outer side of the cable conductor 1. The protective mechanism includes an outer ring 5, the inner side of the outer ring 5 is slidably connected to the outer side of the cable conductor 1, two insulating protective shells 6 are fixedly connected to the outer side of the outer ring 5, three insulating protective shells 7 are slidably connected to the outer side of the insulating protective shells 6, one of the insulating protective shells 7 is slidably connected to an insulating protective shell 8, two push handles 9 are fixedly connected to the outer side of the insulating protective shell 8, a protective washer 10 is fixedly connected to one end of the push handle 9, and multiple support blocks 11 are fixedly connected to the inner side of the protective washer 10. Multiple openings 12 are opened on the outer sides of the insulating protective shells 6, 7, and 8. Multiple rubber balls 13 are fixedly connected to the inner sides of insulating protective shell 2 7 and insulating protective shell 3 8. Multiple locking holes 21 are opened on the outer sides of insulating protective shell 1 6 and insulating protective shell 2 7. Multiple sliding grooves 14 are opened on the outer surface of insulating protective shell 1 6 and insulating protective shell 2 7. Multiple sliders 15 are fixedly connected to the inner sides of insulating protective shell 2 7 and insulating protective shell 3 8. The outer side of the slider 15 is slidably connected to the inner side of the sliding groove 14. A splitting mechanism is set on the outer side of the outer ring 5. Pushing the corresponding two push handles 9 drives insulating protective shell 3 8 to slide through the multiple sliders 15 on the inner side of multiple insulating protective shell 3 8 and insulating protective shell 2 7 and the corresponding sliding grooves 14, so that multiple insulating protective shells 2 7 are pulled outward in sequence under the action of insulating protective shell 3 8, thereby protecting the outer side of the cable conductor 1 by insulating protective shell 1 6, insulating protective shell 2 7 and insulating protective shell 3 8.

[0024] Reference Figure 1 and Figure 3 As shown, the splitting mechanism includes two outer cylinders 16. The outer side of the outer cylinder 16 is slidably connected to the inner side of the outer ring 5. A spring 17 is fixedly connected to the inner side of the outer cylinder 16. A push block 18 is fixedly connected to the bottom of the spring 17. The outer side of the push block 18 is slidably connected to the inner side of the outer cylinder 16. An insertion rod 19 is fixedly connected to the inner side of the push block 18. The outer side of the insertion rod 19 is slidably connected to the inner side of the outer cylinder 16. The bottom end of the insertion rod 19 is engaged with the inner side of the limiting hole 4. A pull plate 20 is fixedly connected to the top of the insertion rod 19. The two springs 17 push the corresponding push block 18 and insertion rod 19 to engage with the limiting hole 4 on the outer side of the cable conductor 1, so that the protective cover can be removed from the outer side of the cable conductor 1.

[0025] The working principle of this utility model is as follows: Before protecting the cable head of the high-voltage ring main unit, the inner side of the outer ring 5 is first fitted onto the outer side of the cable conductor 1, so that the two insert rods 19 on the inner side of the outer ring 5 approach the two limiting holes 4 on the outer side of the cable conductor 1. Then, the two springs 17 are used to push the push block 18, so that the push block 18 drives the bottom end of the insert rod 19 to be inserted into the inner side of the limiting hole 4. The outer ring 5 can drive the two insulating protective shells 16 to be fixed on the outer side of the cable conductor 1. Then, after the terminal 2 on one side of the cable conductor 1 is connected to the high-voltage ring main unit, the two push handles 9 on one side of the two insulating protective shells 38 can be pushed to move along the outer side of the cable conductor 1 to both sides of the outer ring 5. Then, the multiple sliders 1 on the inner side of the insulating protective shells 38 5. Slide on the inner side of multiple grooves 14 on the outer side of one of the insulating protective shells 2 7, so that multiple rubber balls 13 on one side of the insulating protective shell 3 8 engage and limit with multiple locking holes 21 on the outer side of one of the insulating protective shells 2 7. Then, multiple sliders 15 on the inner side of the insulating protective shell 3 8 drive the grooves 14 on the outer side of one of the insulating protective shells 2 7 to be pulled, so that one of the insulating protective shells 2 7 is slidably connected to the grooves 14 on the outer side of the adjacent insulating protective shell 2 7 through multiple sliders 15 on the inner side. This allows multiple insulating protective shells 2 7 to extend in sequence, so that the outer side of the cable conductor 1, terminal 2 and cable 3 is protected by the extension and retraction of two sets of insulating protective shells 1 6, insulating protective shell 2 7 and insulating protective shell 3 8.

[0026] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable head insulation protective cover for a high-voltage ring main unit, comprising a cable conductor (1), characterized in that: A terminal block (2) is fixedly connected to one side of the cable conductor (1), and a cable (3) is fixedly connected to the other side of the cable conductor (1). Two limiting holes (4) are opened on the outside of the cable conductor (1), and a protective mechanism is provided on the outside of the cable conductor (1). The protective mechanism includes an outer ring (5), the inner side of which is slidably connected to the outer side of the cable conductor (1), and two insulating protective shells (6) are fixedly connected to the outer side of the outer ring (5). Three insulating protective shells (7) are slidably connected to the outer side of the insulating protective shells (6), and one of the insulating protective shells (7) is slidably connected to an insulating protective shell (8). Two push handles (9) are fixedly connected to the outer side of the insulating protective shell (8). A splitting mechanism is provided on the outer side of the outer ring (5).

2. The cable head insulation protective cover of the high-voltage ring main unit according to claim 1, characterized in that: One end of the push handle (9) is fixedly connected to a protective washer (10), and multiple support blocks (11) are fixedly connected to the inner side of the protective washer (10).

3. The cable head insulation protective cover of the high-voltage ring main unit according to claim 1, characterized in that: Multiple openings (12) are provided on the outer sides of the insulating protective shell one (6), insulating protective shell two (7) and insulating protective shell three (8), and multiple rubber balls (13) are fixedly connected to the inner sides of the insulating protective shell two (7) and insulating protective shell three (8).

4. The cable head insulation protective cover of the high-voltage ring main unit according to claim 1, characterized in that: Multiple slots (21) are provided on the outer sides of the first insulating protective shell (6) and the second insulating protective shell (7), and multiple sliding grooves (14) are provided on the outer surfaces of the first insulating protective shell (6) and the second insulating protective shell (7).

5. The cable head insulation protective cover of the high-voltage ring main unit according to claim 1, characterized in that: Multiple sliders (15) are fixedly connected to the inner sides of the insulating protective shell two (7) and the insulating protective shell three (8), and the outer side of the slider (15) is slidably connected to the inner side of the groove (14).

6. The cable head insulation protective cover of the high-voltage ring main unit according to claim 1, characterized in that: The splitting mechanism includes two outer cylinders (16), the outer side of the outer cylinder (16) is slidably connected to the inner side of the outer ring (5), a spring (17) is fixedly connected to the inner side of the outer cylinder (16), a push block (18) is fixedly connected to the bottom of the spring (17), and the outer side of the push block (18) is slidably connected to the inner side of the outer cylinder (16).

7. The cable head insulation protective cover of the high-voltage ring main unit according to claim 6, characterized in that: The push block (18) is fixedly connected to the inner side of the insert rod (19), the outer side of the insert rod (19) is slidably connected to the inner side of the outer cylinder (16), the bottom end of the insert rod (19) is engaged with the inner side of the limiting hole (4), and the top of the insert rod (19) is fixedly connected to the pull plate (20).

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