Bus clamp, bus device of switchgear and air-insulated medium-voltage switchgear

Abstract

The utility model relates to the technical field of bus clamps, in particular to a bus clamp, a bus device of switch equipment and air insulation medium voltage switch equipment, which comprises two clamp main bodies, the clamp main bodies are semi-ring-shaped, the two clamp main bodies are spliced to form a ring shape, the upper ends and the lower ends of the two clamp main bodies are provided with top clamping grooves, and the top clamping grooves are provided with top clamping grooves. The top clamping grooves can be provided with corner blocks in a clamped and matched mode, inner clamping grooves are formed in the inner sides of the two clamp bodies, and rubber positioning blocks are arranged in the inner clamping grooves in a clamped and matched mode. According to the utility model, the effect of matching buses with various radius specifications can be realized through simple part replacement, and the use is flexible and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of busbar clamps, in particular to a busbar clamp and a busbar device of a switchgear and an air-insulated medium-voltage switchgear. Background Art

[0002] At present, copper tube busbars, as a new type of current-carrying conductor, are increasingly widely used in medium-voltage switchgear with air as the insulating medium. Compared with traditional flat branch busbars, their significant advantages are: for busbars of the same cross-sectional area, copper tube branch busbars have a smaller skin effect coefficient, a larger current carrying capacity per unit area, and a higher copper material utilization rate. However, in the current structure of air-insulated medium-voltage switchgear, one of the design difficulties of using copper tube branch busbars is how to design busbar clamps so that they can effectively fix the copper tube branch busbars in the switchgear.

[0003] Most of the existing busbar clamps are of a predetermined fixing form, and are inflexible when used to fix copper tube busbars of different radii.

[0004] Therefore, we propose a busbar clamp and a busbar device of a switchgear and an air-insulated medium-voltage switchgear to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a busbar clamp, a busbar device of a switchgear and an air-insulated medium-voltage switchgear.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The busbar clamp includes two clamp bodies, which are semi-ring-shaped. The two clamp bodies are spliced ​​to form a circular ring. The upper and lower ends of the two clamp bodies are provided with top slots, and the top slots can be snap-fitted and matched with corner blocks. The inner sides of the two clamp bodies are provided with internal slots, and the internal slots are snap-fitted and matched with rubber positioning blocks.

[0008] Preferably, the two clamp bodies are fixed by two connecting bolts and corresponding nuts, and the upper and lower ends of the two clamp bodies are provided with round holes matching the connecting bolts, and the round holes are located in the top slots.

[0009] Preferably, a recess is provided at one end of the corner block corresponding to the circular hole.

[0010] Preferably, a fixing screw is provided through a transverse thread in the middle of the clamp body, and both the clamp body and the corresponding rubber positioning block are provided with through holes corresponding to the fixing screw.

[0011] Preferably, the rubber positioning block is semi-annular, and the rubber positioning block has at least two sizes of inner diameters.

[0012] The busbar device of the switchgear includes a copper tube busbar, a contact box, and also includes the busbar clamp as described in the above-mentioned utility model, the two clamp bodies are fixedly connected to the contact box by fixing bolts, the two merged clamp bodies and the corresponding rubber positioning blocks tighten the copper tube busbar, and one end of the copper tube busbar is inserted into the contact box.

[0013] Preferably, the fixing screw passes through the corresponding through hole and can abut against the side wall of the copper tube busbar.

[0014] Preferably, the end of the contact box corresponding to the clamp body is circular or rectangular, and when it is rectangular, it is provided with rectangular grooves corresponding to the four corner blocks, and the four corner blocks can rest against the four sharp corners of the rectangular grooves. The corner blocks are fixed to the contact box by fastening bolts, and the corner blocks are provided with slot holes matching the fastening bolts.

[0015] An air-insulated medium-voltage switchgear comprises a busbar device of the switchgear as described in the utility model.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model realizes clamping and fixing of the copper tube busbar by detachably setting a rubber positioning block on the clamp body, and merging and setting it on the copper tube busbar of corresponding specifications. The rubber positioning block can be disassembled and replaced, and rubber positioning blocks of different specifications can match copper tube busbars of different radii, which has flexible and efficient use effect as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of the clamp body of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the corner block of the utility model;

[0021] Figure 3 It is a structural schematic diagram of rubber positioning blocks of different specifications of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure after the two clamp bodies of the utility model are fixed to the copper tube busbar;

[0023] Figure 5 It is a cross-sectional view of the contact box of the utility model;

[0024] Figure 6 It is a schematic structural diagram of a contact box with a rectangular groove of the utility model.

[0025] In the figure: 1. Clamp body; 2. Top slot; 3. Corner block; 4. Internal slot; 5. Rubber positioning block; 6. Round hole; 7. Countersunk groove; 8. Through hole; 9. Copper tube busbar; 10. Contact box; 11. Slot hole; 12. Connecting hole; 13. Flange; 14. Mounting threaded hole; 15. Plug end; 16. Connecting end. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] Reference Figure 1-3 The busbar clamp comprises two clamp bodies 1, which are semi-circular, and are spliced ​​to form a circular ring, that is, a circle with a circular hole in the middle. The upper and lower ends of the two clamp bodies 1 are provided with top card slots 2, which can be snap-fitted with corner blocks 3, and the corner blocks 3 can be snap-fitted when needed. The inner sides of the two clamp bodies 1 are provided with internal card slots 4, and the internal card slots 4 are snap-fitted with rubber positioning blocks 5, and the rubber positioning blocks 5 can be disassembled.

[0029] For the above example, those skilled in the art should know that when implementing the above technical solution, the clamp body 1 is made of nylon injection molding, and the corresponding corner blocks 3 and rubber positioning blocks 5 are made of plastic.

[0030] The two clamp bodies 1 are fixed by two connecting bolts and corresponding nuts. The upper and lower ends of the two clamp bodies 1 are provided with circular holes 6 matching the connecting bolts, and the circular holes 6 are located in the top card slots 2. That is, the connecting bolts are inserted into the corresponding two circular holes 6, and the nuts are screwed on to fix the two clamp bodies 1, and the upper and lower connecting bolts can be stably fixed. A countersunk groove 7 is provided at one end of the corner block 3 corresponding to the circular hole 6, and the countersunk groove 7 provides a space for setting the connecting bolts and threads.

[0031] For the above examples, those skilled in the art should be aware that when implementing the above technical solution, the corner block 3 can also be set to a variety of length specifications, that is, a variety of specifications.

[0032] A fixing screw is provided through the middle of the clamp body 1, and the clamp body 1 and the corresponding rubber positioning block 5 are provided with a through hole 8 corresponding to the fixing screw. The rubber positioning block 5 is semi-annular, and the rubber positioning block 5 has at least two inner diameter size specifications.

[0033] For the above examples, those skilled in the art should know that when implementing the above technical solution, the specifications of the clamp body 1 are inconvenient, and rubber positioning blocks 5 of different specifications can be flexibly replaced.

[0034] Reference Figure 1-6 The busbar device of the switchgear includes a copper tube busbar 9, a contact box 10, and a busbar clamp of the utility model as described above. The two clamp bodies 1 are fixedly connected to the contact box 10 by fixing bolts. The clamp body 1 and the contact box 10 are both provided with connection holes 12 matching the fixing bolts. After the two clamp bodies 1 are fixedly spliced, they can be fixed to the contact box 10 by fixing bolts. The two merged clamp bodies 1 and the corresponding rubber positioning blocks 5 tighten the copper tube busbar 9, and one end of the copper tube busbar 9 is inserted into the contact box 10. Rubber positioning blocks 5 of different specifications are used to match copper tube busbars 9 of different radii, that is, after two rubber positioning blocks 5 of the same specification are merged, they can effectively fit and clamp the copper tube busbars 9 of the opposite radius. At the same time, the rubber positioning block 5 itself can also undergo a certain deformation, which can meet the adaptation of the copper tube busbar 9 with a radius specification within the range, and it has elasticity itself, which can ensure the effect of flexible contact and better clamping effect. At the same time, the rubber positioning block 5 can be conveniently replaced after being worn.

[0035] For the above example, those skilled in the art should know that when implementing the above technical solution, one end of the copper tube busbar 9 inserted into the contact box 10 is the plug-in end 15 , and the other end is the connection end 16 .

[0036] For the above example, those skilled in the art should know that when implementing the above technical solution, the contact box 10 is provided with a flange 13 and a mounting threaded hole 14 .

[0037] The fixing screw passes through the corresponding through hole 8 and can be matched with the side wall of the copper tube busbar 9. The fixing screw is used to stably fix the copper tube busbar 9 to achieve a positioning effect.

[0038] The end of the contact box 10 corresponding to the clamp body 1 is circular or rectangular. When it is rectangular, it is provided with rectangular grooves corresponding to the four corner blocks 3. The four corner blocks 3 can rest against the four sharp corners of the rectangular grooves. The corner blocks 3 are fixed to the contact box 10 by fastening bolts, and the corner blocks 3 are provided with slot holes 11 matching the fastening bolts.

[0039] For the above example, those skilled in the art should know that when implementing the above technical solution, the contact box 10 is made of epoxy resin, external threads for connection can be provided inside and outside the contact box 10, and an insulating protective burr can be provided at one end of the contact box 10 corresponding to the fixture body 1.

[0040] An air-insulated medium-voltage switchgear comprises a busbar device of the switchgear of the utility model as described above.

[0041] When the utility model is in use: install the rubber positioning blocks 5 of corresponding size specifications on the two clamp bodies 1, and then combine and set them on the copper tube busbar 9 of corresponding specifications, and then pass the fixing screw through the through hole 8 to fix the copper tube busbar 9. Then insert the copper tube busbar 9 into the contact box 10, and fix the contact box 10 to the two clamp bodies 1. During operation, rubber positioning blocks 5 of different specifications are used to match copper tube busbars 9 of different radii. At the same time, the rubber positioning blocks 5 themselves can also undergo a certain deformation to meet the adaptation of the copper tube busbars 9 of radius specifications within a range, and they themselves have elasticity, which can ensure the effect of flexible contact and better clamping effect. At the same time, the rubber positioning blocks 5 can be easily replaced after being worn out.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A busbar clamp, comprising two clamp bodies (1), characterized in that: The clamp body (1) is semi-ring-shaped, and two clamp bodies (1) are spliced ​​to form a circular ring. The upper and lower ends of the two clamp bodies (1) are both provided with top slots (2), and the top slots (2) can be snap-fitted and matched with corner blocks (3). The inner sides of the two clamp bodies (1) are both provided with internal slots (4), and the internal slots (4) are snap-fitted and matched with rubber positioning blocks (5).

2. The busbar clamp according to claim 1, characterized in that: The two clamp bodies (1) are fixed by two connecting bolts and corresponding nuts. The upper and lower ends of the two clamp bodies (1) are both provided with round holes (6) matching the connecting bolts, and the round holes (6) are located in the top slots (2).

3. The busbar clamp according to claim 2, characterized in that: A sink groove (7) is provided at one end of the corner block (3) corresponding to the circular hole (6).

4. The busbar clamp according to claim 1, characterized in that: A fixing screw is provided through a transverse thread in the middle of the clamp body (1), and both the clamp body (1) and the corresponding rubber positioning block (5) are provided with a through hole (8) corresponding to the fixing screw.

5. The busbar clamp according to claim 1, characterized in that: The rubber positioning block (5) is semi-annular, and the rubber positioning block (5) is provided with at least two sizes of inner diameters.

6. A busbar device of a switchgear, comprising a copper tube busbar (9) and a contact box (10), characterized in that: It also includes a busbar clamp as described in any one of claims 1 to 5, wherein the two clamp bodies (1) are fixedly connected to the contact box (10) by fixing bolts, the two combined clamp bodies (1) and the corresponding rubber positioning blocks (5) tighten the copper tube busbar (9), and one end of the copper tube busbar (9) is inserted into the contact box (10).

7. The busbar device of the switchgear according to claim 6, characterized in that: The fixing screw passes through the corresponding through hole (8) and can abut against the side wall of the copper tube busbar (9).

8. The busbar device of the switchgear according to claim 6, characterized in that: The end of the contact box (10) corresponding to the clamp body (1) is circular or rectangular, and when it is rectangular, it is provided with rectangular grooves corresponding to the four corner blocks (3), and the four corner blocks (3) can abut against the four sharp corners of the rectangular grooves. The corner blocks (3) are fixed to the contact box (10) by fastening bolts, and the corner blocks (3) are provided with slotted holes (11) matching the fastening bolts.

9. Air-insulated medium-voltage switchgear, characterized in that: A busbar device comprising the switchgear according to any one of claims 6-8.

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