Low-voltage coil lead clamp

Abstract

A low-voltage coil lead clamp comprises an insulation clamping plate, a plurality of fixed insulators and a plurality of clamping bolt assemblies, the two ends of each fixed insulator are connected with the insulation clamping plate, and the clamping bolt assemblies penetrate through the fixed insulators and the insulation clamping plate; and the lead is placed between the fixed insulator and the insulating clamping plate. The clamping bolt assembly comprises a screw rod, a first nut and a second nut; one end of the screw is connected with the first nut and the other end is connected with the second nut. The low-voltage coil lead clamp provided by the utility model can ensure that the low-voltage lead does not deform under the condition of larger repulsive force, the insulation distance between the leads is ensured, and the operation safety coefficient is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to a low-voltage coil lead clamp. Background Art

[0002] Due to the particularity of sudden short circuit of dry-type transformers, when a short circuit occurs externally, the coil will generate a large electric force, which will cause the coil to displace and deform, thereby affecting the insulation distance and insulation structure of the transformer. Among them, the lead wire part of the low-voltage coil is most susceptible to impact. The starting and last rows of the lead wires will generate a large repulsive force, which will cause the coil to burst and be damaged, causing the entire transformer to be scrapped and unusable. In the prior art, the two leads are supported by only one insulator, and the insert on the insulator is shallow, which is easily damaged under the condition of large repulsive force, resulting in deformation and damage of the lead wire; the insulator is damaged in a sudden situation, and the insulation distance between the two low-voltage leads cannot be guaranteed. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a clamp, which ensures that the electric force generated by the low-voltage coil will not damage the coil in the event of a sudden short circuit through the clamping force of the clamp.

[0004] The utility model adopts the following technical solutions.

[0005] A low voltage coil lead clamp comprises an insulating clamping plate, a fixed insulator and a clamping bolt assembly.

[0006] There are several fixed insulators and clamping bolt assemblies, both ends of the fixed insulators are connected to the insulating clamping plate, and the clamping bolt assemblies penetrate the fixed insulators and the insulating clamping plate;

[0007] The low voltage coil lead is placed between the fixed insulator and the insulating clamp.

[0008] Further, the clamping bolt assembly includes a screw rod, a first nut and a second nut;

[0009] One end of the screw rod is connected to the first nut, and the other end is connected to the second nut.

[0010] Furthermore, the insulating clamp includes a first insulating clamp and a second insulating clamp, the first nut is connected to the first insulating clamp, and the second nut is connected to the second insulating clamp.

[0011] Further, the initial discharge of the low voltage coil lead wire is inserted between the first insulating clamping plate and the fixed insulator;

[0012] The last row of the low-voltage coil lead wire is inserted between the second insulating clamping plate and the fixed insulator.

[0013] Furthermore, the first insulating clamping plate and the second insulating clamping plate are provided with threaded holes adapted to the screw rods.

[0014] Furthermore, the first insulating clamping plate is provided with a first sliding groove, and the second insulating clamping plate is provided with a second sliding groove.

[0015] Furthermore, the low-voltage coil lead fixture further comprises a plurality of positioning components, the positioning components comprising a first positioning pin, a second positioning pin, a first positioning nut and a second positioning nut;

[0016] One end of the first positioning pin passes through the first sliding groove on the first insulating clamping plate, and the other end is connected to the first positioning nut, and the first positioning nut is located outside the first insulating clamping plate;

[0017] One end of the second positioning pin passes through the second sliding groove on the second insulating clamping plate, and the other end is connected to the second positioning nut, and the second positioning nut is located outside the second insulating clamping plate.

[0018] The beneficial effect of the utility model lies in that, compared with the prior art, in the low-voltage coil lead clamp provided by the utility model, the two ends of the fixed insulator are connected to the insulating clamp by a clamping bolt assembly, thereby ensuring that the lead will not be deformed when subjected to a large repulsive force and ensuring the insulation distance between the lead wires, thereby improving the operating safety factor; at the same time, the provision of the positioning pin and the positioning nut allows the lead wire to be placed in the space formed by the insulating clamp, the fixed insulator, the clamping bolt and the positioning pin, thereby ensuring that the low-voltage coil lead wire is firmly positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a low-voltage coil lead fixture provided by the utility model;

[0020] Figure 2 This is a left view of a low-voltage coil lead fixture provided by the utility model;

[0021] Figure 3 It is a right view of a low-voltage coil lead clamp provided by the utility model.

[0022] In the figure: 101-first insulating clamp; 102-second insulating clamp; 103-first slide groove; 104-second slide groove; 2-fixed insulator; 301-screw; 302-first nut; 303-second nut; 401-first positioning pin; 402-second positioning pin; 403-first positioning nut; 404-second positioning nut; 5-low-voltage coil lead. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The embodiments described in this application are only embodiments of a part of the utility model, not all embodiments. Based on the spirit of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model.

[0024] like Figures 1 to 3 As shown, a low-voltage coil lead clamp includes an insulating clamp, a fixed insulator 2 and a clamping bolt assembly.

[0025] There are several fixed insulators 2 and clamping bolt assemblies, both ends of the fixed insulator 2 are connected to the insulating clamping plate, and the clamping bolt assemblies penetrate the fixed insulator 2 and the insulating clamping plate;

[0026] The low voltage coil lead wire 5 is placed between the fixed insulator 2 and the insulating clamping plate.

[0027] The clamping bolt assembly includes a screw rod 301, a first nut 302 and a second nut 303;

[0028] One end of the screw rod 301 is connected to the first nut 302 , and the other end is connected to the second nut 303 .

[0029] The insulating clamping plate includes a first insulating clamping plate 101 and a second insulating clamping plate 102 . The first nut 302 is connected to the first insulating clamping plate 101 , and the second nut 303 is connected to the second insulating clamping plate 102 .

[0030] The low voltage coil lead wire 5 is initially discharged between the first insulating clamping plate 101 and the fixed insulator 2;

[0031] The end of the low voltage coil lead wire 5 is inserted between the second insulating clamping plate 102 and the fixed insulator 2 .

[0032] The first insulating clamping plate 101 and the second insulating clamping plate 102 are provided with threaded holes adapted to the screw rod 301 .

[0033] The first insulating clamping plate 101 is provided with a first sliding groove 103 , and the second insulating clamping plate 102 is provided with a second sliding groove 104 .

[0034] The low voltage coil lead fixture further comprises a plurality of positioning components, the positioning components comprising a first positioning pin 401, a second positioning pin 402, a first positioning nut 403 and a second positioning nut 404;

[0035] One end of the first positioning pin 401 passes through the first sliding groove 103 on the first insulating clamping plate 101 and is pressed against the fixed insulator 2, and the other end is connected to the first positioning nut 403, and the first positioning nut 403 is located outside the first insulating clamping plate 101;

[0036] One end of the second positioning pin 402 passes through the second sliding groove 104 on the second insulating clamping plate 102 and is pressed against the fixed insulator 2 , and the other end is connected to the second positioning nut 404 , which is located outside the second insulating clamping plate 102 .

[0037] The positioning pin slides in the slide groove, and when it is in contact with the low-voltage coil lead 5, the positioning pin is pressed against the fixed insulator, and the positioning nut is tightened and connected with the positioning pin; the starting row of the low-voltage coil lead 5 is inserted into the space formed by the fixed insulator 2, the screw 301, the first insulating clamping plate 101 and the first positioning pin 401; the last row of the low-voltage coil lead 5 is inserted into the space formed by the fixed insulator 2, the screw 301, the second insulating clamping plate 102 and the second positioning pin 402.

[0038] The beneficial effect of the utility model lies in that, compared with the prior art, in the low-voltage coil lead clamp provided by the utility model, the two ends of the fixed insulator are connected to the insulating clamp by a clamping bolt assembly, thereby ensuring that the lead will not be deformed when subjected to a large repulsive force and ensuring the insulation distance between the lead wires, thereby improving the operating safety factor; at the same time, the setting of the positioning pin and the positioning nut enables the low-voltage coil lead to be placed in the space formed by the insulating clamp, the fixed insulator, the clamping bolt and the positioning pin, thereby ensuring that the low-voltage coil lead is firmly positioned.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A low voltage coil lead clamp, comprising an insulating clamping plate, a fixed insulator (2) and a clamping bolt assembly, characterized in that: There are a plurality of fixed insulators (2) and clamping bolt assemblies, both ends of the fixed insulator (2) are connected to the insulating clamping plate, and the clamping bolt assemblies penetrate the fixed insulator (2) and the insulating clamping plate; The low voltage coil lead wire (5) is placed between the fixed insulator (2) and the insulating clamping plate.

2. A low voltage coil lead clamp according to claim 1, characterized in that: The clamping bolt assembly comprises a screw rod (301), a first nut (302) and a second nut (303); One end of the screw rod (301) is connected to the first nut (302), and the other end is connected to the second nut (303).

3. A low voltage coil lead fixture according to claim 2, characterized in that: The insulating clamping plate comprises a first insulating clamping plate (101) and a second insulating clamping plate (102); the first nut (302) is connected to the first insulating clamping plate (101); and the second nut (303) is connected to the second insulating clamping plate (102).

4. A low voltage coil lead fixture according to claim 3, characterized in that: The low voltage coil lead wire (5) is initially discharged between the first insulating clamping plate (101) and the fixed insulator (2); The end of the low-voltage coil lead wire (5) is inserted between the second insulating clamping plate (102) and the fixed insulator (2).

5. A low voltage coil lead fixture according to claim 4, characterized in that: The first insulating clamping plate (101) and the second insulating clamping plate (102) are provided with threaded holes adapted to the screw rod (301).

6. A low voltage coil lead fixture according to claim 5, characterized in that: The first insulating clamping plate (101) is provided with a first sliding groove (103), and the second insulating clamping plate (102) is provided with a second sliding groove (104).

7. A low voltage coil lead fixture according to claim 6, characterized in that: The low-voltage coil lead clamp further comprises a plurality of positioning components, wherein the positioning components comprise a first positioning pin (401), a second positioning pin (402), a first positioning nut (403) and a second positioning nut (404); One end of the first positioning pin (401) passes through the first sliding groove (103) on the first insulating clamping plate (101), and the other end is connected to the first positioning nut (403), and the first positioning nut (403) is located outside the first insulating clamping plate (101); One end of the second positioning pin (402) passes through the second sliding groove (104) on the second insulating clamping plate (102), and the other end is connected to the second positioning nut (404), and the second positioning nut (404) is located outside the second insulating clamping plate (102).

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