Electronic transformer calibration device

Abstract

The utility model discloses an electronic transformer verification device, which comprises a [-shaped frame and an electronic transformer body, one side of the closed end of the [-shaped frame is provided with a positioning plate abutted against the side wall of the electronic transformer body, and the upper parts of the two sides of the [-shaped frame are respectively connected with a movable base in a sliding manner. The upper surfaces of the two movable bases are fixedly connected with the same n-shaped frame. A detection guide head of verification equipment is electrically connected with two conductive insertion rods, then an n-shaped frame is moved to drive the two conductive insertion rods to move together until the two conductive insertion rods are horizontally aligned with a detection port in an electronic transformer body, then a sliding block is moved in a movable groove, and after the conductive insertion rods are located over the detection port, the detection port of the electronic transformer body is detected. By loosening the conductive insertion rod, the conductive insertion rod is automatically in butt joint with the detection port under the elastic action of the elastic assembly, detection is completed, the whole operation process is rapid and convenient, rapid verification of multiple transformers is facilitated, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power verification equipment, and particularly relates to an electronic current transformer verification device. Background Art

[0002] Generally, the current transformer inside the circuit breaker is tested during the handover test, routine test and condition-based maintenance test of the 35 kV circuit breaker. The test contents include the transformation ratio test of the current transformer, the volt-ampere characteristic test of the current transformer, the polarity test of the current transformer, etc. Generally, an AC transformer comprehensive characteristic calibration bench is selected for the test method. The primary lead and secondary lead of the current transformer are introduced into the calibration bench, and the comprehensive calibration of the current transformer is completed by setting and operating the calibration bench.

[0003] In the prior art, when calibrating the transformer, it is necessary to connect the wiring terminal on the transformer to the external detection cable and then energize it, and use a measuring instrument to read the current data derived from the transformer to complete the calibration process. However, on a conventional test bench, it is necessary to manually connect the transformer and the cable part. This operation method is relatively cumbersome in the process of disassembling and assembling the connection wires, which affects the work efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an electronic current transformer verification device to solve the above problems, as described in detail below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An electronic current transformer verification device provided by the utility model includes a U-shaped frame and an electronic current transformer body. One side of the closed end of the U-shaped frame is provided with a positioning plate that abuts against the side wall of the electronic current transformer body. Both sides above the U-shaped frame are slidably connected with movable bases. The upper surfaces of the two movable bases are fixedly connected with the same N-shaped frame. An activity groove is opened on the upper surface of the N-shaped frame. Two sliders are slidably connected in the activity groove. Conductive insertion rods that move in the vertical direction are arranged in both sliders. The power connection ends of the two conductive insertion rods are adapted to the power connection ports above the electronic current transformer body. And an elastic force component for driving the conductive insertion rods to move downward is arranged on the bottom surface of the slider.

[0007] When using the above-mentioned electronic current transformer calibration device, place the U-shaped frame behind the electronic current transformer body and move it forward until the positioning plate abuts against the rear side of the electronic current transformer body. Then, electrically connect the detection probe of the calibration equipment to the two conductive plug rods. Subsequently, move the n-shaped frame to drive the two conductive plug rods to move together until the two conductive plug rods are horizontally aligned with the detection ports on the electronic current transformer body. Then, move the slider in the movable slot until the conductive plug rod is directly above the detection port. Then, release the conductive plug rod so that it automatically docks with the detection port under the elastic force of the elastic component to complete the detection.

[0008] Preferably, the conductive plug rod includes a conducting rod, and an insulating shell is coated on the outer side of the conducting rod.

[0009] Preferably, the upper surface of the closed end of the U-shaped frame is fixedly connected to the positioning plate through a right-angle frame, and a magnetic strip is fixedly connected to the surface of the positioning plate.

[0010] Preferably, two ear plates are fixedly connected to the upper surfaces of both side plates of the U-shaped frame, and a sliding rod is fixedly connected between the two ear plates. A sliding hole slidably connected to the sliding rod is formed through the movable base.

[0011] Preferably, the bottom surface of the movable base abuts against the upper surface of the U-shaped frame, and a friction pad adapted to the bottom surface of the movable base is fixedly connected to the upper surface of the U-shaped frame.

[0012] Preferably, the cross-section of the slider is in the shape of a工字 (I-shaped), and the slider is in clearance fit with the movable slot. A sliding rod hole adapted to the diameter of the insulating shell is formed through the middle of the slider in the vertical direction.

[0013] Preferably, the elastic component includes an annular plate fixedly connected to the lower part of the insulating shell. A spring is connected between the annular plate and the slider, and the spring is sleeved on the outer side of the insulating shell.

[0014] Preferably, a hand-held ring is provided above the slider, and the hand-held ring is fixedly connected to the insulating shell.

[0015] The beneficial effects are as follows:

[0016] By electrically connecting the detection probe of the calibration equipment to the two conductive plug rods, then moving the n-shaped frame to drive the two conductive plug rods to move together until the two conductive plug rods are horizontally aligned with the detection ports on the electronic current transformer body. Then, move the slider in the movable slot until the conductive plug rod is directly above the detection port. Then, release the conductive plug rod so that it automatically docks with the detection port under the elastic force of the elastic component to complete the detection. The whole operation process is fast and convenient, facilitating the rapid calibration of multiple current transformers, and greatly improving the work efficiency. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a perspective view of the present invention;

[0019] Figure 2 is a rear perspective view of the present invention;

[0020] Figure 3 is a perspective view of the U-shaped frame and related structures of the present invention;

[0021] Figure 4 is a perspective view of the conductive plug of the present invention.

[0022] The description of the reference numerals is as follows:

[0023] 1, U-shaped frame; 2, electronic current transformer body; 3, elastic component; 3a, ring plate; 3b, spring; 4, positioning plate; 5, movable base; 6, n-shaped frame; 7, movable groove; 8, slider; 9, conductive plug; 91, insulating shell; 92, conducting rod; 10, right-angle frame; 11, magnetic strip; 12, ear plate; 13, sliding rod; 14, sliding hole; 15, friction pad; 16, hand-held ring; 17, sliding rod hole. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0025] See Figure 1-Figure 4As shown in the figure, the utility model provides an electronic current transformer calibration device, which includes a U-shaped frame 1 and an electronic current transformer body 2. On one side of the closed end of the U-shaped frame 1, there is a positioning plate 4 that abuts against the side wall of the electronic current transformer body 2. On both upper sides of the U-shaped frame 1, there are slidingly connected movable bases 5. On the upper surfaces of the two movable bases 5, there is a same n-shaped frame 6 fixedly connected. On the upper surface of the n-shaped frame 6, there is a movable groove 7. In the movable groove 7, there are two sliding blocks 8 slidingly connected. In both of the two sliding blocks 8, there are conductive plug rods 9 that move in the vertical direction, and the power connection ends of the two conductive plug rods 9 are adapted to the power connection ports above the electronic current transformer body 2. And on the bottom surface of the sliding block 8, there is an elastic force assembly 3 for driving the conductive plug rod 9 to move downward.

[0026] As an optional implementation manner, the conductive plug rod 9 includes a power connection conductive rod 92, and an insulating shell 91 is coated on the outer side of the power connection conductive rod 92, which can make the conductive plug rod 9 safer and more stable during use.

[0027] As an optional implementation manner, the upper surface of the closed end of the U-shaped frame 1 is fixedly connected to the positioning plate 4 through a right-angle frame 10. On the surface of the positioning plate 4, there is a magnetic strip 11 fixedly connected, which can make the positioning plate 4 keep in a vertical state and abut against the side wall of the electronic current transformer body 2. At the same time, the magnetic strip 11 can make the positioning plate 4 adsorb on the surface of the iron electronic current transformer body 2 (if the surface of the electronic current transformer body 2 is non-ferrous, only the positioning plate 4 is used for abutting).

[0028] Refer to Figure 2 As shown in the figure, on the upper surfaces of both side plates of the U-shaped frame 1, there are two ear plates 12 fixedly connected. Between the two ear plates 12, there is a sliding rod 13 fixedly connected. A sliding hole 14 that is slidingly connected to the sliding rod 13 is penetrated through the movable base 5. The bottom surface of the movable base 5 abuts against the upper surface of the U-shaped frame 1. And on the upper surface of the U-shaped frame 1, there is a friction pad 15 that is adapted to the bottom surface of the movable base 5. The sliding rod 13 makes the n-shaped frame 6 more stable when moving. At the same time, the friction pad 15 can increase the moving resistance of the movable base 5 to achieve the effect of stopping as it moves.

[0029] Refer to Figure 4 As shown in the figure, the cross-section of the sliding block 8 is in an I shape, and the sliding block 8 has a clearance fit with the movable groove 7. In the middle of the sliding block 8, there is a sliding rod hole 17 that is penetrated in the vertical direction and is adapted to the diameter of the insulating shell 92. In the elastic force assembly 3, there is an annular plate 3a fixedly connected to the lower part of the insulating shell 92. Between the annular plate 3a and the sliding block 8, there is a spring 3b connected, and the spring 3b is sleeved on the outer side of the insulating shell 92. The sliding block 8 being set in an I shape can make it more stable when moving in the movable groove 7. Through the elastic force of the spring 3b, the annular plate 3a and the conductive plug rod 9 can be driven to move downward, so that the power connection conductive rod 92 is automatically docked with the detection port above the electronic current transformer body 2.

[0030] Specifically, a hand-holding ring 16 is provided above the slider 8 , and the hand-holding ring 16 is fixedly connected to the insulating shell 92 , and the conductive plug rod 9 can be pulled upward by the hand-holding ring 16 .

[0031] With the above structure, when in use, the n-shaped frame 1 is placed on the rear side of the electronic transformer body 2 and moved forward until the positioning plate 4 abuts against the rear side of the electronic transformer body 2, and then the detection guide head of the verification equipment is electrically connected to the two conductive plug rods 9, and then the n-shaped frame 6 is moved to drive the two conductive plug rods 9 to move together until the two conductive plug rods 9 are horizontally aligned with the detection port on the electronic transformer body 2, and then the slider 8 is moved in the movable groove 7 until the conductive plug rod 9 is located directly above the detection port, and then the conductive plug rod 9 is loosened to automatically dock with the detection port under the elastic force of the elastic component 3 to complete the detection.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An electronic transformer calibration device, characterized in that: It includes a U-shaped frame (1) and an electronic current transformer body (2). On one side of the closed end of the U-shaped frame (1), there is a positioning plate (4) that abuts against the side wall of the electronic current transformer body (2). On the upper sides of both sides of the U-shaped frame (1), movable bases (5) are slidably connected. On the upper surfaces of the two movable bases (5), the same n-shaped frame (6) is fixedly connected. An activity groove (7) is formed on the upper surface of the n-shaped frame (6). Two sliders (8) are slidably connected in the activity groove (7). Conductive plug rods (9) that move in the vertical direction are provided in the two sliders (8). The power connection ends of the two conductive plug rods (9) are adapted to the power connection ports above the electronic current transformer body (2). And an elastic force assembly (3) for driving the conductive plug rod (9) to move downward is provided on the bottom surface of the slider (8).

2. The electronic transformer calibration device according to claim 1, characterized in that: The conductive plug rod (9) includes a power connection conducting rod (92), and an insulating shell (91) is coated on the outer side of the power connection conducting rod (92).

3. The electronic transformer calibration device according to claim 1, characterized in that: The upper surface of the closed end of the U-shaped frame (1) is fixedly connected to the positioning plate (4) through a right-angle frame (10), and a magnetic strip (11) is fixedly connected to the surface of the positioning plate (4).

4. The electronic transformer calibration device according to claim 1, characterized in that: On the upper surfaces of both side plates of the U-shaped frame (1), two ear plates (12) are fixedly connected. A slide rod (13) is fixedly connected between the two ear plates (12). A slide hole (14) that is slidably connected to the slide rod (13) is formed through the movable base (5).

5. The electronic transformer calibration device according to claim 4, characterized in that: The bottom surface of the movable base (5) abuts against the upper surface of the U-shaped frame (1), and a friction pad (15) that is adapted to the bottom surface of the movable base (5) is fixedly connected to the upper surface of the U-shaped frame (1).

6. The electronic transformer calibration device according to claim 2, characterized in that: The cross section of the slider (8) is in the shape of a workbench, and the slider (8) is in clearance fit with the activity groove (7). A slide rod hole (17) that is adapted to the diameter of the insulating shell (91) is formed through the middle of the slider (8) in the vertical direction.

7. The electronic transformer calibration device according to claim 2, characterized in that: The elastic force assembly (3) includes an annular plate (3a) fixedly connected to the lower part of the insulating shell (91). A spring (3b) is connected between the annular plate (3a) and the slider (8), and the spring (3b) is sleeved on the outer side of the insulating shell (91).

8. An electronic transformer calibration device according to claim 7, characterized in that: A hand-held ring (16) is provided above the slider (8), and the hand-held ring (16) is fixedly connected to the insulating shell (91).

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