Fixing tool for non-excitation switch of transformer

Abstract

The utility model relates to a fixing tool for a non-excitation switch of a transformer, which comprises a clamping piece clamped on a cylinder body of the non-excitation switch and a fixing piece connected with the transformer, the fixing piece and the clamping piece are connected and fixed through a stud, an adjusting cushion block is arranged between the fixing piece and the clamping piece, and the adjusting cushion block is connected with the clamping piece. A through hole is formed in the adjusting cushion block, and the stud is sleeved with the adjusting cushion block. The clamping piece is fixed through the fixing piece, and the distance between the fixing piece and the clamping piece is adjusted by increasing or decreasing the number of the adjusting cushion blocks, so that the clamping piece is fastened and clamped at the bottom of the cylinder to limit and fix the cylinder, the vertical stress of the cylinder of the non-excitation switch is dispersed during gear shifting, the stability of the non-excitation switch is improved, the service life of the non-excitation switch is prolonged, and the service life of the non-excitation switch is prolonged. And the safety during operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer leads, in particular to fixing a switch cylinder with a relatively high height of a transformer off-excitation switch, and specifically refers to a fixing tool for the transformer off-excitation switch. Background Art

[0002] At present, the off-excitation transformer uses a three-phase off-excitation switch. The installation method of the off-excitation switch of the existing transformer lead assembly is to first install the off-excitation switch bracket, use a crane to lift the three-phase off-excitation switch onto the switch bracket, and then use fastening bolts to connect the secondary flange on the top of the off-excitation switch to the switch bracket to complete the limiting and fixing. However, this process can only tighten the top of the switch.

[0003] The cylinder height of a three-phase de-excitation switch is generally high, and some are even close to 2 meters. When only the top of the switch is tightened, when the switch is adjusted, the contacts at the bottom of the switch rotate with the top of the switch as the fulcrum. The torque is long, and the stress cannot be dispersed. The bottom of the cylinder will shake slightly, causing the cylinder to be twisted under force, which will cause mechanical damage to the switch over time. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a tooling for fixing the bottom of a cylinder of a non-excitation switch, so that stresses of the upper and lower cylinders of the non-excitation switch are dispersed when the gear is adjusted, thereby improving the stability and service life of the non-excitation switch and improving safety during operation.

[0005] The utility model is realized through the following technical scheme: a fixing tool for a transformer de-excitation switch, comprising a clamping piece clamped on a cylinder of the de-excitation switch and a fixing piece connected to the transformer, wherein the fixing piece is screwed to the clamping piece.

[0006] This solution uses a fixed fixing piece to screw the clamping piece together, so that the clamping piece is clamped at the bottom of the cylinder to limit the cylinder, so that when the gear is adjusted, the force on the cylinder of the de-excitation switch is dispersed up and down, thereby improving the stability and service life of the de-excitation switch and improving safety during operation.

[0007] As an optimization, the clamping member includes two clamping parts located on both sides of the cylinder body and arranged opposite to each other, and the two clamping parts are respectively screwed with the fixing member. This optimization scheme clamps and fixes the cylinder body in the middle through the two clamping parts, which is convenient for clamping, installing and using the clamping member.

[0008] As an optimization, the clamping part is a C-shaped structure, and the opening ends of the two clamping parts are arranged opposite to each other and form a clamping space for clamping the cylinder. In this optimization solution, the cylinder is clamped in the opening of the clamping part, which is more stable for clamping the cylinder and enhances the fixing effect.

[0009] As an optimization, the fixed end of the fixing piece is connected to the transformer, and the free end of the fixing piece is screwed to the clamping piece. In this optimization solution, one end of the fixing piece is fixed to the transformer, and the other end is connected to the clamping piece to fix the clamping piece.

[0010] As an optimization, the fixed end of the fixing member is connected to the transformer via a fixing plate, and the fixed end of the fixing member and the fixing plate are bolted. This optimization solution facilitates the disassembly and assembly of the fixing member.

[0011] As an optimization, the fixing member includes a transverse connecting rod, both ends of which are fixedly connected with vertically extending fixing rods, and the connecting rod is connected to the back side of the clamping part through a stud. This optimization solution facilitates the assembly and disassembly of the fixing member and the clamping member.

[0012] As an optimization, the back sides of the connecting rod and the clamping part are both provided with bolt holes for the studs to pass through. This optimization solution facilitates the fixing member and the clamping member to be fixedly connected by the studs.

[0013] As an optimization, the bolt hole is a long hole extending laterally. This optimization solution facilitates the adjustment of the position of the stud.

[0014] As an optimization, an adjustment pad is provided between the fixing member and the clamping member. This optimization scheme adjusts the distance between the fixing member and the clamping part by adding or removing the pad, so that the clamping part clamps the cylinder tightly.

[0015] As an optimization, a through hole is provided on the adjusting pad, and the adjusting pad is sleeved on the stud. This optimization solution facilitates the installation and use of the adjusting pad.

[0016] The beneficial effects of the utility model are as follows: the clamping member is fixed by the fixing member, and the spacing between the fixing member and the clamping member is adjusted by increasing or decreasing the number of adjusting pads, so that the clamping member is clamped tightly at the bottom of the cylinder to limit the cylinder, so that when the gear is adjusted, the upper and lower forces of the cylinder of the non-excitation switch are dispersed, the stability and service life of the non-excitation switch are improved, and the safety during operation is improved. The fixing member and the fixing plate on the transformer oil tank are screwed and fixed, which is convenient for the disassembly and assembly of the tooling. When in use, the clamping member clamps and limits the cylinder through two relative clamping parts, further improving the convenience of use and the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the clamping cylinder of the utility model;

[0018] Figure 2 This is a top view of the clamping cylinder of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] As shown in the figure:

[0021] 1. Clamping piece, 11. Clamping part, 2. Fixing piece, 21. Connecting rod, 22. Fixing rod, 3. Stud, 4. Adjusting spacer, 5. Fastening nut, 6. Fixing plate, 7. Cylinder, 8. Bolt hole. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0023] The de-excitation switch is assembled on the transformer. During assembly, the top of the cylinder 7 of the de-excitation switch is first installed and fixed as described in the background technology, and the fixing tool described in the present application is used to fix the bottom of the cylinder 7, so that when the gear is adjusted, the de-excitation switch is subjected to force dispersion up and down, thereby improving the stability and service life of the de-excitation switch and improving safety during operation.

[0024] like Figures 1 to 3 As shown, a fixing fixture for a transformer de-excitation switch comprises a clamping member 1 clamped at the bottom of a cylinder 7 of the de-excitation switch, a fixing member 2 connected to the transformer, and the fixing member 2 is screwed to the clamping member 1.

[0025] Specifically, the clamping member 1 includes two clamping parts 11 disposed opposite to each other on both sides of the cylinder 7, and the two clamping parts 11 are respectively screwed with the fixing member 2. The clamping part 11 in this embodiment is a C-shaped structure, and the opening ends of the two clamping parts 11 are disposed opposite to each other and form a clamping space for clamping the cylinder 7. The opening length of the clamping part 11 is adapted to the outer diameter of the cylinder 7. The two clamping parts clamp the cylinder in the middle, and the shaking of the bottom of the cylinder is limited to limit the position of the cylinder.

[0026] The two clamping parts 11 are respectively provided with fixing members 2 on opposite sides thereof. The fixing members 2 are provided with a free end and a fixed end. The fixed end of the fixing member 2 is connected and fixed to the transformer via a fixing plate, and the free end of the fixing member 2 is screwed to the clamping member 1 .

[0027] Specifically, the fixing member 2 includes a horizontal connecting rod 21 and a vertically extending fixing rod 22. The connecting rod 21 and the back side of the clamping portion 11 are arranged parallel to each other. The connecting rod 21 in this embodiment is the free end of the fixing member 2. The connecting rod 21 is connected and fastened to the back side of the clamping portion 11 through the stud 3. Bolt holes 8 for the stud 3 to pass through are provided on the connecting rod 21 and the back side of the clamping portion. The bolt holes 8 are long strip holes extending horizontally, which facilitate the movement and adjustment of the position of the stud.

[0028] The connecting rod 21 of the present embodiment is screwed to the clamping portion 11 through two studs 3 distributed side by side, thereby enhancing the stability of the connection between the fixing member and the clamping portion.

[0029] Specifically, both lateral ends of the connecting rod 21 are fixedly connected with vertically extending fixing rods 22, and the fixing rods 22 are the fixed ends of the fixing parts. The fixing plate 6 is welded on the oil tank of the transformer, and the fixed ends of the fixing parts and the fixing plate 6 are bolted.

[0030] Two fixing plates 6 are welded on the oil tank of the transformer in this embodiment. The fixing plates 6 are angle steels. The two angle steels are vertically arranged and face one by one with the two fixing rods 22 of the fixing member 2. One side of the angle steel is welded to the outer wall of the oil tank, and the fixing rod 22 is screwed and fixed to the other side of the angle steel. The fixing member is fixed to the oil tank to fix the clamping member, so that the clamping member can clamp the cylinder tightly.

[0031] In order to enable the clamping part 11 to clamp and tighten the cylinder 7, an adjusting pad 4 is provided between the fixing member 2 and the clamping member 1. The adjusting pad 4 is located between the connecting rod 21 and the back side of the clamping part 11. A through hole is provided on the adjusting pad 4. The adjusting pad 4 is sleeved on the stud 3. The spacing between the fixing member 2 and the clamping part 11 is adjusted by increasing or decreasing the number of adjusting pads 4, so that the clamping part can clamp and tighten the cylinder. In this embodiment, the two studs 3 connecting the connecting rod 21 and the clamping part 11 are sleeved with adjusting pads 4. It should be noted that the application does not limit the length of a single adjusting pad 4 along the stud direction. Several adjusting pads of different lengths can be used according to different spacings. However, the total length of several adjusting pads 4 on the two studs 3 is the same, so that the connecting rod and the clamping part remain relatively parallel.

[0032] Working principle: When in use, the two clamping parts 11 of the clamping piece 1 are respectively placed on both sides of the bottom of the cylinder 7, the fixing rod 22 of the fixing piece 2 and the fixing plate 6 on the transformer oil tank are screwed and fixed, the distance between the connecting rod 21 of the fixing piece and the clamping part 11 is measured to determine the number of adjusting pads 4, and the corresponding number of adjusting pads 4 are placed between the connecting rod and the clamping part, so that the stud 3 passes through the bolt hole 8 of the connecting rod, the through hole of the adjusting pad and the bolt hole 8 of the clamping part in turn, and the fixing piece 2 and the clamping piece 1 are screwed and fixed by tightening the nut 5 and the two ends of the stud 3, so as to complete the limit of the bottom of the cylinder.

[0033] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should fall within the scope of protection of the claims of the present invention.

Claims

1. A fixing device for a transformer de-excitation switch, characterized in that: It comprises a clamping piece (1) clamped on a cylinder (7) of a non-excitation switch, and a fixing piece (2) connected to a transformer, wherein the fixing piece (2) is screwed to the clamping piece (1).

2. A fixing device for a transformer de-excitation switch according to claim 1, characterized in that: The clamping member (1) comprises two clamping parts (11) arranged opposite to each other on two sides of the cylinder (7), and the two clamping parts are respectively screwed to the fixing member (2).

3. A fixing device for a transformer de-excitation switch according to claim 2, characterized in that: The clamping portion (11) is a C-shaped structure, and the opening ends of the two clamping portions are arranged opposite to each other and form a clamping space for clamping the cylinder (7).

4. A fixing device for a transformer de-excitation switch according to claim 3, characterized in that: The fixing member (2) is provided with a free end and a fixed end, the fixed end of the fixing member is connected to the transformer, and the free end of the fixing member is screwed to the clamping member (1).

5. A fixing device for a transformer de-excitation switch according to claim 4, characterized in that: The fixed end of the fixing member is connected to the transformer via a fixing plate (6), and the fixed end of the fixing member and the fixing plate (6) are bolted together.

6. A fixing device for a transformer de-excitation switch according to claim 5, characterized in that: The fixing member (2) comprises a transverse connecting rod (21), both ends of which are fixedly connected to vertically extending fixing rods (22), and the connecting rod (21) is connected to the back side of the clamping portion (11) via a stud (3).

7. A fixing device for a transformer de-excitation switch according to claim 6, characterized in that: The connecting rod (21) and the back side of the clamping portion are both provided with bolt holes (8) for the studs (3) to pass through.

8. The fixing device for the transformer de-excitation switch according to claim 7, characterized in that: The bolt hole (8) is a long hole extending laterally.

9. The fixing device for the transformer de-excitation switch according to claim 6, characterized in that: An adjustment pad (4) is provided between the fixing member (2) and the clamping member (1).

10. A fixing device for a transformer de-excitation switch according to claim 9, characterized in that: The adjusting pad (4) is provided with a through hole, and the adjusting pad is sleeved on the stud (3).

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