Multi-channel calibration tool for current transformer calibrator

Abstract

The utility model relates to the technical field of mutual inductors, in particular to a multi-channel verification tool for a current transformer calibrator. Comprising a base body, a first long groove formed in the base body, a plurality of sets of clamping button grooves formed in the groove bottom of the first long groove, clamping ring grooves formed in the side wall of the first long groove and partition plates arranged in the first long groove and located between the clamping ring grooves, and the clamping button grooves are formed between the partition plates and between the partition plates and the inner walls of the two ends of the first long groove; the clamp ring groove and the ventilation groove are arranged in a staggered manner, one end of the partition plate is fixed on the inner wall of one side, with the clamp ring groove, of the first long groove, the other end of the partition plate and the inner wall of the other side of the first long groove are arranged in a spaced manner, and the partition plate corresponds to the ventilation groove. According to the design, a plurality of mutual inductors can be placed at the same time for verification, the mutual inductors are separated and limited, wiring is more convenient, and the verification efficiency and accuracy of the mutual inductors are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to a multi-channel calibration tool for a current mutual inductor calibrator. Background Art

[0002] The transformer calibrator is a multifunctional and dual-parameter AC measuring instrument, which is mainly used to calibrate the basic errors of various types and levels of power transformers or instrument transformers and their ancillary equipment, and can perform multifunctional performance tests on related electrical metering equipment. The transformer calibrator is one of the important equipment indispensable for the development of the power industry.

[0003] During calibration, the standard transformer and the transformer to be calibrated are connected to the transformer calibrator at the same time. Each transformer can only be wired one by one, and the position of the transformer cannot be fixed. It is easy to roll when vibrated or touched by mistake, which affects the calibration accuracy and is prone to danger. In addition, due to the large number of wiring and the complexity of wiring, wiring errors and poor wiring contact are prone to occur, which ultimately leads to very low calibration efficiency and accuracy. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a multi-channel calibration tool for a current transformer calibrator, which can simultaneously place multiple transformers for calibration, separate and limit multiple transformers, make wiring more convenient, and greatly improve the transformer calibration efficiency.

[0005] The technical solution adopted by the utility model is to provide a multi-channel calibration tool for a current transformer calibrator, including a seat body, a first long groove arranged on the seat body, a plurality of groups of button grooves arranged on the bottom of the first long groove, a snap ring groove arranged on the side wall of the first long groove, and a partition plate arranged in the first long groove and located between the snap ring grooves, wherein the button grooves are respectively arranged between the partition plates and between the partition plates and the inner walls at both ends of the first long groove.

[0006] It also includes a ventilation groove arranged on the other side wall of the first long groove, and the snap ring groove and the ventilation groove are arranged alternately.

[0007] One end of the partition is fixed on the inner wall of the first long groove with the snap ring groove, and the other end is spaced apart from the inner wall of the other side of the first long groove. The partition corresponds to the ventilation groove.

[0008] It also includes bosses respectively arranged on the upper sides of both ends of the seat body, a clamping rod groove arranged on the bosses, and a primary side connecting rod placed in the clamping rod groove.

[0009] It also includes parallel pneumatic clamps arranged on both sides of the base body, clamping blocks respectively arranged on the two movable ends of the parallel pneumatic clamps, and clamping grooves arranged on the opposite end faces of the clamping blocks. The two movable ends of the parallel pneumatic clamps face upward and drive the clamping blocks to move relative to each other. The clamping grooves correspond to the clamping rod grooves, and the two ends of the primary side connecting rods are clamped by means of the clamping blocks.

[0010] The beneficial effect of the utility model is that it provides a multi-channel calibration tool for a current transformer calibrator. When in use, multiple transformers are placed in a first long slot, and the positions of the multiple transformers are limited and spaced by the first long slot and the partition, so that the multiple transformers are arranged in the same posture. When vibrated or accidentally touched, the posture and position will not change, thereby ensuring the stability of the transformer during calibration. At the same time, wiring is more convenient, and the calibration efficiency and accuracy of the transformer are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the clamping block of the utility model;

[0013] Figure 3 It is a structural reference diagram of the piercing type transformer.

[0014] In the accompanying drawings, 1, seat body, 2, first long groove, 3, button groove, 4, snap ring groove, 5, ventilation groove, 6, partition, 7, boss, 8, rod groove, 9, parallel pneumatic clamp, 10, clamping block, 11, clamping groove, 12, primary side connecting rod, 13, puncture box, 14, puncture slider, 15, knob, 16, coil, 17, puncture needle. DETAILED DESCRIPTION

[0015] like Figure 1-3 As shown, the utility model provides a multi-channel calibration tool for a current transformer calibrator, comprising a base body 1, a first long groove 2 arranged on the base body 1, a plurality of groups of button grooves 3 arranged on the bottom of the first long groove 2, a snap ring groove 4 arranged on the side wall of the first long groove 2, and a partition 6 arranged in the first long groove 2 and located between the snap ring grooves 4, wherein the button grooves 3 are respectively arranged between the partitions 6 and between the partitions 6 and the inner walls at both ends of the first long groove 2.

[0016] like Figure 3As shown, the tooling is mainly suitable for puncture type mutual inductors, and its structure includes a puncture box 13, a puncture slider 14 arranged at the upper end of the puncture box 13, two knobs 15 arranged at the lower end of the puncture box 13, a coil 16 arranged at one side of the puncture box 13, and a puncture needle 17 arranged at the upper end of the puncture box 13. The two knobs 15 are connected to the puncture slider 14 through a screw rod and the puncture needle 17 respectively. The puncture needle 17 and the puncture slider 14 can be driven to rise and fall by rotating the two knobs 15. The puncture slider 14 is a hook-shaped structure, and the coil 16 corresponds to the puncture slider 14.

[0017] The width of the first long slot 2 is adapted to the length of the puncture box 13, the button slot 3 is adapted to the knob 15, the snap ring slot 4 is adapted to the coil 16, and the distance between the partitions 6 and between the partitions 6 and the inner walls at both ends of the first long slot 2 is adapted to the width of the puncture box 13 plus the coil 16. When in use, the longitudinal cut knob 15 of the transformer is placed downward into the first long slot 2 and between each transformer partition 6 or between the partition 6 and the inner walls at both ends of the first long slot 2. At this time, the coil 16 enters the snap ring slot 4, and multiple transformers are limited so that multiple transformers are arranged in the same posture. When vibrated or accidentally touched, the posture and position will not change, thereby ensuring the stability of the transformer during verification. At the same time, wiring is more convenient, and the verification efficiency and accuracy of the transformer are greatly improved.

[0018] like Figure 1-2 As shown, it also includes a ventilation groove 5 arranged on the other side of the first long groove 2, and the snap ring groove 4 and the ventilation groove 5 are arranged alternately.

[0019] The ventilation slot 5 is located between the mutual inductors and will not be blocked by the mutual inductors, so the heat dissipation effect is better. In this design, the bottom of the ventilation slot 5 is flush with the bottom of the first long slot 2, which further improves the heat dissipation effect.

[0020] like Figure 1 As shown, one end of the partition plate 6 is fixed on the inner wall of the first long groove 2 with the snap ring groove 4, and the other end is spaced apart from the inner wall of the other side of the first long groove 2, and the partition plate 6 corresponds to the ventilation groove 5.

[0021] One end of the partition 6 facing the ventilation slot 5 is spaced from the inner wall of the first long slot 2, and the partition 6 will not block the flow of air. One ventilation slot 5 can dissipate heat for two mutual inductors at the same time, further improving the heat dissipation effect of the mutual inductors.

[0022] like Figure 1-2 As shown, it also includes bosses 7 respectively arranged on the upper sides of both ends of the base body 1, a clamping rod groove 8 arranged on the boss 7 and a primary side connecting rod 12 placed in the clamping rod groove 8.

[0023] Both ends of the primary side connecting rod 12 are placed in the clamping rod groove 8 of the boss 7. The primary side connecting rod 12 passes through the coils 16 of multiple mutual inductors. Both ends of the primary side connecting rod 12 can be connected to the primary side wiring of the calibrator, reducing the number of wirings and the amount of wiring operations during calibration, thereby further improving the calibration efficiency and operational convenience of the mutual inductor.

[0024] like Figure 2 As shown, it also includes parallel pneumatic clamps 9 arranged on both sides of the base body 1, clamping blocks 10 respectively arranged on the two movable ends of the parallel pneumatic clamps 9, and clamping grooves 11 arranged on the opposite end faces of the clamping blocks 10. The two movable ends of the parallel pneumatic clamps 9 face upward and drive the clamping blocks 10 to move relative to each other. The clamping grooves 11 correspond to the clamping rod grooves 8, and the two ends of the primary side connecting rods 12 are clamped by means of the clamping blocks 10.

[0025] The parallel pneumatic clamp 9 is a two-jaw clamp, and the clamp moves in relative translation. The clamping block 10 moves in relative translation under the drive of the parallel pneumatic clamp 9, clamping the two ends of the primary side wiring rod 12 in the clamping groove 11, clamping the primary side wiring rod 12, so that the primary side wiring rod 12 will not change after being subjected to force, ensuring stable wiring and more convenient wiring.

Claims

1. A multi-channel calibration tool for a current transformer calibrator, characterized in that: The invention comprises a seat body (1), a first long groove (2) arranged on the seat body (1), a plurality of groups of button grooves (3) arranged on the groove bottom of the first long groove (2), a snap ring groove (4) arranged on the side wall of the first long groove (2), and a partition plate (6) arranged in the first long groove (2) and located between the snap ring grooves (4), wherein the button grooves (3) are respectively arranged between the partition plates (6) and between the partition plates (6) and the inner walls at both ends of the first long groove (2).

2. The multi-channel calibration tool for a current transformer calibrator according to claim 1, characterized in that: It also comprises a ventilation groove (5) arranged on the other side wall of the first long groove (2), and the snap ring groove (4) and the ventilation groove (5) are arranged alternately.

3. The multi-channel calibration tool for a current transformer calibrator according to claim 2, characterized in that: One end of the partition plate (6) is fixed to the inner wall of the first long groove (2) on one side with the snap ring groove (4), and the other end is spaced apart from the inner wall of the other side of the first long groove (2). The partition plate (6) corresponds to the ventilation groove (5).

4. The multi-channel calibration tool for a current transformer calibrator according to claim 1, characterized in that: It also includes bosses (7) respectively arranged on the upper sides of both ends of the seat body (1), a clamping rod groove (8) arranged on the bosses (7), and a primary side connecting rod (12) placed in the clamping rod groove (8).

5. The multi-channel calibration tool for a current transformer calibrator according to claim 4, characterized in that: It also includes parallel pneumatic clamps (9) arranged on both sides of the base body (1), clamping blocks (10) respectively arranged on the two movable ends of the parallel pneumatic clamps (9), and clamping grooves (11) arranged on the opposite end faces of the clamping blocks (10), the two movable ends of the parallel pneumatic clamps (9) facing upward and driving the clamping blocks (10) to move relative to each other, the clamping grooves (11) corresponding to the clamping rod grooves (8), and the two ends of the primary side connecting rod (12) are clamped by means of the clamping blocks (10).

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