A power distribution network capacitance current tester device calibration device

Abstract

The utility model belongs to the field of capacitor current tester, specifically is a kind of electric power distribution network capacitor current tester equipment calibration device, including box, the inner surface of box is connected with calibrator body, the surface rotation of box is connected with take-off component, the surface of take-off component is overlapped with test line structure;Through the structural design of take-off component, before using the calibration device, detection personnel pull input connector, make cylinder rotate and release test line body to enough length, subsequently detection personnel connect input connector to the tested tester, then connect output connector to calibrator body and carry out calibration, after completing calibration, detection personnel pull out input connector and output connector, rotate rotating handle and make cylinder reverse rotation, make the test line body released rewrap back on cylinder, so that the calibration device can store test line and be convenient for using when calibration, improve the convenience of using the calibration device.

Description

Technical Field

[0001] This utility model relates to the field of capacitance current testers, specifically a calibration device for a capacitance current tester in a power distribution network. Background Technology

[0002] A capacitance current tester calibration device is a professional device used to calibrate capacitance current testers. It is mainly used for accuracy verification and performance testing of capacitance current measuring instruments in power systems. The capacitance current tester is mainly used to measure the ground capacitance current in the power system. Its accuracy directly affects key aspects such as power grid safety, relay protection, and arc suppression coil compensation. The role of the calibration device is to ensure that the measurement results of the capacitance current tester are reliable, accurate, and in compliance with standards.

[0003] In the prior art, since the calibration device needs to be connected to the instrument being calibrated via external test leads during use, the existing calibration device is not convenient to store the test leads for easy use during calibration, which reduces the convenience of using the existing calibration device. At the same time, the existing calibration device requires test clips or other tools for assistance during the calibration process, depending on the calibration situation. The existing calibration device is not convenient to carry other auxiliary tools to assist in the calibration, which reduces the applicability of the calibration device. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the problems of existing calibration devices being inconvenient to store test leads for easy use during calibration and inconvenient to carry other auxiliary tools for calibration, this utility model proposes a calibration device for a power distribution network capacitor current tester.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The power distribution network capacitor current tester equipment calibration device of this utility model includes a box; the inner surface of the box is sleeved with the calibration instrument body, the surface of the box is rotatably connected with a take-up and release assembly, the surface of the take-up and release assembly is overlapped with a test line structure, a rotating shaft is fixedly connected to one side of the box, a box cover is rotatably connected to the surface of the rotating shaft, a soft block is fixedly connected to the inner surface of the box cover, a groove is opened on one side of the soft block, and a fixing assembly is fixedly connected to the surface of the groove.

[0006] The retraction assembly includes a cylinder that overlaps the surface of the test line structure, a box body that is rotatably connected to the surface of the cylinder, a conical block that is fixedly connected to one end of the cylinder, a box body that is connected through the surface of the conical block, and a rotating handle that is fixedly connected to one end of the conical block.

[0007] The fixing component includes a fixing block fixedly connected to the surface of the groove. An elastic band is fixedly connected to one side of the fixing block. A latch is fixedly connected to one end of the elastic band, and a buckle is fixedly connected to the other end of the elastic band. A buckle is engaged with the surface of the latch.

[0008] Preferably, the test lead structure includes an output connector with an electrical wire connected to one side of the calibrator body, one end of the output connector with an electrical wire connected to the test lead body, a cylinder overlapping the surface of the test lead body, and one end of the test lead body with an electrical wire connected to an input connector.

[0009] Preferably, the other end of the test lead body is connected to a test clip, one side of the test clip is fitted with an elastic band, and the other side of the test clip is fitted with a groove.

[0010] Preferably, a connecting block is fixedly connected to one side of the box body, and handles are rotatably connected to both sides of the connecting block.

[0011] Preferably, a slot is provided on the surface of the box body near the connecting block, and a locking block is provided on one side of the box cover.

[0012] Preferably, a partition plate is continuously connected to the surface of the cylinder, and a box body is fixedly connected to the surface of the partition plate.

[0013] The advantages of this utility model are:

[0014] 1. Through the structural design of the retractable component, this utility model allows the inspector to pull the input connector before using the calibration device, causing the cylinder to rotate and release the test lead body to a sufficient length. Then, the inspector connects the input connector to the test instrument to be calibrated and the output connector to the calibration instrument body for calibration. After the calibration is completed, the inspector disconnects the input and output connectors, rotates the handle to make the cylinder rotate in the opposite direction, and rewinds the released test lead body back onto the cylinder. This allows the calibration device to store the test lead for easy use during calibration, improving the convenience of using the calibration device.

[0015] 2. Through the structural design of the fixing component, before using the calibration device, the tester places the test clip in the groove on the soft block, then the tester grasps the latch and buckle and stretches the elastic band, and the latch is inserted into the buckle. After the tester stops stretching the elastic band, the elastic band springs back and fixes the test clip in the groove. When calibrating the device, the tester presses down on the protrusions on both sides of the latch, causing the latch to bend and deform inward until the protrusions on both sides of the latch are completely retracted into the buckle. Then the tester pulls out the latch to separate the latch from the buckle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the retractable assembly structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing component structure of this utility model.

[0021] In the diagram: 1. Box body; 2. Calibrator body; 3. Test lead structure; 301. Output connector; 302. Test lead body; 303. Input connector; 4. Retraction assembly; 401. Cylinder; 402. Conical block; 403. Rotating handle; 5. Shaft; 6. Box cover; 7. Soft block; 8. Fixing assembly; 801. Fixing block; 802. Elastic band; 803. Tongue; 804. Buckle; 9. Test clip; 10. Connecting block; 11. Handle; 12. Locking block; 13. Divider plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figures 1-4 As shown, a power distribution network capacitor current tester calibration device includes a housing 1; a calibration instrument body 2 is sleeved on the inner surface of the housing 1, a take-up and release assembly 4 is rotatably connected to the surface of the housing 1, a test line structure 3 is overlapped on the surface of the take-up and release assembly 4, a rotating shaft 5 is fixedly connected to one side of the housing 1, a housing cover 6 is rotatably connected to the surface of the rotating shaft 5, a soft block 7 is fixedly connected to the inner surface of the housing cover 6, a groove is opened on one side of the soft block 7, and a fixing assembly 8 is fixedly connected to the surface of the groove.

[0024] The take-up and take-down assembly 4 includes a cylinder 401 that overlaps the surface of the test line structure 3. A box body 1 is rotatably connected to the surface of the cylinder 401. A conical block 402 is fixedly connected to one end of the cylinder 401. The box body 1 is connected through the surface of the conical block 402. A rotating handle 403 is fixedly connected to one end of the conical block 402.

[0025] The fixing component 8 includes a fixing block 801 fixedly connected to the surface of the groove. An elastic band 802 is fixedly connected to one side of the fixing block 801. A latch 803 is fixedly connected to one end of the elastic band 802. A buckle 804 is fixedly connected to the other end of the elastic band 802. The buckle 804 is engaged with the surface of the latch 803.

[0026] During operation, thanks to the structural design of the retraction component 4, before using the calibration device, the inspector pulls the input connector 303 to rotate the cylinder 401 and extend the test lead body 302 to a sufficient length. Then, the inspector connects the input connector 303 to the test instrument being calibrated and the output connector 301 to the calibrator body 2 for calibration. After calibration, the inspector disconnects the input connector 303 and the output connector 301, rotates the handle 403 to reverse the rotation of the cylinder 401, and rewinds the extended test lead body 302 back onto the cylinder 401. This allows the calibration device to retract the test lead for easy use during calibration, improving the efficiency of the calibration process. The device is convenient because of the structural design of the fixing component 8. Before using the calibration device, the tester places the test clip 9 in the groove on the soft block 7, then grasps the latch 803 and the buckle 804, stretches the elastic band 802, and inserts the latch 803 into the buckle 804. After the tester stops stretching the elastic band 802, the elastic band 802 springs back and fixes the test clip 9 in the groove. When calibrating the device, the tester presses down on the protrusions on both sides of the latch 803, causing the latch 803 to bend and deform inward until the protrusions on both sides of the latch 803 are completely retracted into the buckle 804. Then the tester pulls out the latch 803 to separate the latch 803 from the buckle 804.

[0027] Furthermore, the test line structure 3 includes an output connector 301 with a wire connected to one side of the calibrator body 2, a test line body 302 with a wire connected to one end of the output connector 301, a cylinder 401 overlapping the surface of the test line body 302, and an input connector 303 with a wire connected to one end of the test line body 302.

[0028] During operation, the input connector 303 is connected to the current tester being tested to read the electrical signal through the test lead structure 3. The signal is then output to the calibrator body 2 through the output connector 301 via the test lead body 302. The output electrical signal is processed by the processor inside the calibrator body 2 and the various parameters are displayed on the screen.

[0029] Furthermore, the other end of the test lead body 302 is connected to a test clip 9, one side of the test clip 9 is attached to an elastic band 802, and the other side of the test clip 9 is attached to a groove.

[0030] During operation, by setting up test clip 9, tests can be performed by directly connecting the metal parts during the calibration process.

[0031] Furthermore, a connecting block 10 is fixedly connected to one side of the box body 1, and handles 11 are rotatably connected to both sides of the connecting block 10;

[0032] During operation, the design of handle 11 enhances the portability of the calibration device.

[0033] Furthermore, a slot is provided on the surface of the box body 1 near the connecting block 10, and a locking block 12 is provided on one side of the box cover 6;

[0034] During operation, the slot and the locking block 12 are designed so that after the lid 6 is closed, the locking block 12 can be locked inside the slot to fix the lid 6.

[0035] Furthermore, a partition plate 13 is continuously connected to the surface of the cylinder 401, and a box body 1 is fixedly connected to the surface of the partition plate 13;

[0036] During operation, the partition plate 13 can separate the test lead bodies 302, preventing them from tangling together.

[0037] Working principle: Before using the calibration device, the inspector places the test clip 9 in the groove on the soft block 7. Then, the inspector grasps the latch 803 and the buckle 804, stretches the elastic band 802, and inserts the latch 803 into the buckle 804. After stopping the stretching of the elastic band 802, the elastic band 802 springs back and fixes the test clip 9 in the groove. During calibration, the inspector pulls the input connector 303, causing the cylinder 401 to rotate and extend the test lead body 302 to a sufficient length. Then, the inspector connects the input connector 303 to the test instrument being calibrated and the output connector 301 to the calibrator body 2. The input connector 303 outputs an electrical signal to the calibrator body 2 through the output connector 301. The output electrical signal is processed inside the calibrator body 2. After processing, the device displays various parameters on the screen. Simultaneously, the operator presses the protrusions on both sides of the latch 803, causing the latch 803 to bend inward until the protrusions on both sides of the latch 803 are fully retracted into the buckle 804. Then, the operator pulls out the latch 803 to separate it from the buckle 804 and remove the test clip 9. During the calibration process, the operator can directly clamp the test clip 9 onto the exposed metal interface of the calibrated tester for testing. After completing the calibration, the operator unplugs the input connector 303 and the output connector 301, rotates the handle 403 to make the cylinder 401 rotate in the opposite direction, and rewinds the released test lead body 302 back onto the cylinder 401. This allows the calibration device to store the test lead for easy use during calibration, improving the convenience of using the calibration device.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A calibration device for a power distribution network capacitor current tester, characterized in that: Includes a box body (1); the inner surface of the box body (1) is fitted with a calibrator body (2), the surface of the box body (1) is rotatably connected with a take-up and put-down assembly (4), the surface of the take-up and put-down assembly (4) is overlapped with a test line structure (3), a rotating shaft (5) is fixedly connected to one side of the box body (1), a box cover (6) is rotatably connected to the surface of the rotating shaft (5), a soft block (7) is fixedly connected to the inner surface of the box cover (6), a groove is provided on one side of the soft block (7), and a fixing assembly (8) is fixedly connected to the surface of the groove. The take-up and take-down assembly (4) includes a cylinder (401) that overlaps the surface of the test line structure (3). A box body (1) is rotatably connected to the surface of the cylinder (401). A conical block (402) is fixedly connected to one end of the cylinder (401). The box body (1) is connected through the surface of the conical block (402). A rotating handle (403) is fixedly connected to one end of the conical block (402). The fixing component (8) includes a fixing block (801) fixedly connected to the surface of the groove. An elastic band (802) is fixedly connected to one side of the fixing block (801). A latch (803) is fixedly connected to one end of the elastic band (802). A buckle (804) is fixedly connected to the other end of the elastic band (802). The buckle (804) is engaged with the surface of the latch (803).

2. The power distribution network capacitor current tester equipment verification device according to claim 1, characterized in that: The test line structure (3) includes an output connector (301) with a wire connected to one side of the calibrator body (2), a test line body (302) with a wire connected to one end of the output connector (301), a cylinder (401) overlapping the surface of the test line body (302), and an input connector (303) with a wire connected to one end of the test line body (302).

3. The power distribution network capacitor current tester equipment verification device according to claim 2, characterized in that: The other end of the test lead body (302) is connected to a test clip (9). One side of the test clip (9) is covered with an elastic band (802), and the other side of the test clip (9) is covered with a groove.

4. The power distribution network capacitor current tester equipment verification device according to claim 1, characterized in that: A connecting block (10) is fixedly connected to one side of the box (1), and handles (11) are rotatably connected to both sides of the connecting block (10).

5. The power distribution network capacitor current tester equipment verification device according to claim 1, characterized in that: A slot is provided on the surface of the box body (1) near the connecting block (10), and a locking block (12) is provided on one side of the box cover (6).

6. The power distribution network capacitor current tester equipment verification device according to claim 1, characterized in that: A partition plate (13) is connected through the surface of the cylinder (401), and a box body (1) is fixedly connected to the surface of the partition plate (13).

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