Current transformer calibration device

Abstract

The utility model discloses a current transformer verification device, and particularly relates to the technical field of current transformer verification, the current transformer verification device comprises a verification device main body used for protection, the verification device main body is provided with a connecting assembly, the connecting assembly comprises a first connecting piece arranged in the verification device main body, and a second connecting piece is arranged in the verification device main body. And a second connecting piece is arranged at the bottom of the first connecting piece. According to the utility model, through the arrangement of the connecting assembly, the contact block can be contacted with the second induction member and the first induction member, so that the current transmitted on the wiring pin and the current output by the calibrator main body can determine whether the transformation ratio relation of the calibrator main body meets the requirement, and the contact block is adjusted by pushing the slide block to drive the displacement of the top plate. Therefore, the contact block is disconnected and contacted with the first induction piece and the second induction piece, so that the convenience of the device in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformer calibration, and more specifically, to a current transformer calibration device. Background Art

[0002] The current transformer calibration device is an instrument used to calibrate the current transformer. The current transformer is a device used to measure current and is often used to measure high currents in power systems. In order to ensure the accuracy and reliability of the transformer, regular calibration and testing are required.

[0003] The current transformer calibration device usually consists of a current source, a voltage source, a measuring instrument, etc. It can simulate different current and load conditions, and judge the accuracy and error range of the transformer by comparing the current output by the calibration device with the current output by the transformer.

[0004] Among them, it was found through searching that the patent application number CN202020715153.5 discloses a current transformer calibration device, including a platform body, both sides of the platform body are hinged with support rods, the top of the platform body is welded with a rod body, the top of the rod body is respectively fixedly connected with two copper bars, the outer side wall of the copper bar is evenly sleeved with current transformers, the outer side wall of the rod body is sleeved with evenly distributed insulators, and the first storage cavity and the second storage cavity are respectively fixedly connected with exhaust fans and exhaust fans;

[0005] When the structure is in use, the through holes guide the upper surface of the platform to blow air to remove dust and cool it down. When the semiconductor refrigeration sheet is working, it can cool and cool the air blown out by the exhaust fan, thereby improving the cooling effect of the exhaust fan. At the same time, when the exhaust fan is working, negative pressure is used to exhaust air and reduce dust on the upper surface of the platform. Blowing air on the upper surface of the platform to remove dust and cool it down by the exhaust fan can reduce the cooling time waiting for the calibration device and improve the calibration efficiency. However, the structure is not easy to connect wires when in use and is not convenient enough during calibration. Utility Model Content

[0006] In order to overcome the above defects of the prior art, the utility model provides a current transformer calibration device, aiming to solve the problems raised in the above background technology.

[0007] The utility model is implemented in this way. The utility model provides the following technical solutions: a current transformer calibration device, comprising a calibrator body for protection, wherein a connection assembly is arranged on the calibrator body;

[0008] The connection assembly includes a first connection member arranged in the main body of the checker, a second connection member is arranged at the bottom of the first connection member, and one end of each of the first connection member and the second connection member is provided with a connection pin extending to the outside of the main body of the checker for connection;

[0009] A first verification member movably connected to the verification body through an axle pin is provided on one side of the bottom of the first connecting member and located inside the verification body, a second verification member movably connected to the verification body through an axle pin is provided at the bottom of the first verification member, and a display screen for display is provided on the outside of the verification body;

[0010] A contact block mounted on the second verification member is provided at one side of the bottom of the first verification member, the top vertical section of the contact block is set to an arc shape, a first sensing member mounted on the first connecting member is provided at the top of the contact block, a second sensing member is provided at one end of the top of the second connecting member and at the bottom of the contact block, and a slider is provided at one end of the first verification member and the second verification member away from the first connecting member and the second connecting member, and the slider is slidably connected to the verification device body;

[0011] It can be seen that in the above technical solution, the contact block is adjusted by pushing the slider to drive the top plate to move, so as to achieve disconnection and contact between the contact block and the first sensing element and the second sensing element, so as to improve the convenience of the device when in use.

[0012] Optionally, in a possible implementation, the top of the slider extends to an end of the second verification piece away from the contact block, a top plate is provided on the top of the slider, a pressure piece extending to the inside of the verification piece is provided on the top of the verification body, stepped grooves are provided on both sides of the bottom of the pressure piece, and the ends of the first verification piece and the second verification piece are respectively provided with adjustment blocks located in the two stepped grooves, and a spring extending to the second verification piece is provided on the adjustment block to which the first verification piece belongs;

[0013] It can be seen that in the above technical solution, the top plate is driven to move upward by pushing the slider. When the top plate moves upward, it will contact the adjustment block to which the first verification piece belongs, and enable the first verification piece to be squeezed downward. When the adjustment block is displaced, it can drive the spring to pull the second verification piece to move, so that the contact block can contact the second sensing piece and the first sensing piece, so that the current transmitted on the wiring pin can be compared with the current output by the verifier body to determine whether the transformation ratio relationship of the verifier body meets the requirements.

[0014] Technical effects and advantages of the utility model:

[0015] By setting the connection assembly, compared with the prior art, the overall design is simple and the structure is reasonable. Through the corresponding coordinated use of various structures, when the adjustment block is displaced, the spring can be driven to pull the second verification piece to displace, so that the contact block can contact the second induction piece and the first induction piece, so that the current transmitted on the wiring pin can be matched with the current output by the verification body to determine whether the transformation ratio relationship of the verification body meets the requirements;

[0016] When the device is in use, the contact block is adjusted by pushing the slider to drive the top plate to move, so that the contact block can be disconnected and contacted with the first sensing element and the second sensing element, thereby improving the convenience of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0018] Figure 1 It is the front view of the overall structure of the utility model.

[0019] Figure 2 This is a front view of the connecting assembly of the utility model installed in the main body of the checker.

[0020] Figure 3 It is the front view of the connection component of the utility model.

[0021] Figure 4 This is a front view of the first verification piece, the second verification piece, the contact block and the pressing piece of the utility model.

[0022] Figure 5 It is a front view of the first connecting member, the second connecting member, the wiring pins and the slider of the utility model.

[0023] The accompanying drawings are marked as follows: 1. Verifier body; 2. First connecting piece; 3. Second connecting piece; 4. Wiring pin; 5. First verification piece; 6. Second verification piece; 7. Contact block; 8. First sensing piece; 9. Second sensing piece; 10. Slider; 11. Top plate; 12. Pressing piece; 13. Step groove; 14. Adjusting block; 15. Spring; 16. Display screen. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] As attached Figure 1-5A current transformer calibration device shown in the figure, through the connection component set on the calibration body 1, when the adjustment block 14 is displaced, it can drive the spring 15 to pull the second effect member 6 to displace, so that the contact block 7 can contact the second induction member 9 and the first induction member 8, so that the current transmitted on the wiring pin 4 can be matched with the current output by the calibration body 1, to determine whether the transformation ratio relationship of the calibration body 1 meets the requirements, and when the device is in use, the contact block 7 is adjusted by pushing the slider 10 to drive the top plate 11 to move, so that the contact block 7 is disconnected and in contact with the first induction member 8 and the second induction member 9, so as to improve the convenience of the device when in use, and the specific structure of the component is set as follows;

[0026] The connection assembly includes a first connection member 2 disposed in a checker body 1, a second connection member 3 is disposed at the bottom of the first connection member 2, and one end of each of the first connection member 2 and the second connection member 3 is provided with a connection pin 4 extending to the outside of the checker body 1 for connection;

[0027] A first verification member 5 movably connected to the verification body 1 through an axle pin is provided at one side of the bottom of the first connecting member 2 and located inside the verification body 1. A second verification member 6 movably connected to the verification body 1 through an axle pin is provided at the bottom of the first verification member 5. A display screen 16 for display is provided on the outside of the verification body 1.

[0028] A contact block 7 mounted on the second verification piece 6 is provided on one side of the bottom of the first verification piece 5, and the top vertical section shape of the contact block 7 is set to an arc shape. A first sensing piece 8 mounted on the first connecting piece 2 is provided on the top of the contact block 7, and a second sensing piece 9 is provided at one end of the top of the second connecting piece 3 and located at the bottom of the contact block 7. A slider 10 is provided at one end of the first verification piece 5 and the second verification piece 6 away from the first connecting piece 2 and the second connecting piece 3. The slider 10 is slidably connected to the verifier body 1, and the top of the slider 10 extends to the end of the second verification piece 6 away from the contact block 7. A top plate 11 is provided on the top of the slider 10. A pressing piece 12 extending to the inside of the verifier body 1 is provided on the top of the verifier body 1, and stepped grooves 13 are provided on both sides of the bottom of the pressing piece 12. Adjustment blocks 14 located in the two stepped grooves 13 are respectively provided at the ends of the first verification piece 5 and the second verification piece 6, and a spring 15 extending to the second verification piece 6 is provided on the adjustment block 14 belonging to the first verification piece 5.

[0029] According to the above structure, when in use, the staff installs the device at a designated position, installs the wire on the connection pin 4, and drives the top plate 11 to move upward by pushing the slider 10. When the top plate 11 moves upward, it will contact the adjustment block 14 to which the first verification piece 5 belongs, and enable the first verification piece 5 to be pressed downward;

[0030] When the adjustment block 14 is displaced, the spring 15 can be driven to pull the second verification member 6 to rotate along the axis point where the second verification member 6 is connected to the verification device body 1, so that the contact block 7 can contact the second induction member 9 or the first induction member 8, so that the current transmitted on the connection pin 4 can be matched with the current output by the verification device body 1 to determine whether the transformation ratio relationship of the verification device body 1 meets the requirements;

[0031] When the device is in use, the contact block 7 is adjusted by pushing the slider 10 to drive the top plate 11 to move, so that the contact block 7 and the first sensing element 8 and the second sensing element 9 can be disconnected and contacted, so as to improve the convenience of the device when in use.

[0032] Different from the prior art, the present application discloses a current transformer calibration device, which can drive the spring 15 to pull the second effector 6 to move when the adjustment block 14 is displaced, so that the contact block 7 can contact the second induction member 9 and the first induction member 8, so that the current transmitted on the wiring pin 4 can be consistent with the current output by the verifier body 1 to determine whether the transformation ratio relationship of the verifier body 1 meets the requirements, and when the device is in use, the contact block 7 is adjusted by pushing the slider 10 to drive the top plate 11 to move, so as to achieve the contact block 7 and the first induction member 8 and the second induction member 9 disconnection and contact, so as to improve the convenience of the device when in use.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A current transformer calibration device, comprising a calibrator body (1) for protection, characterized in that: The checker body (1) is provided with a connection component; The connection assembly comprises a first connection member (2) arranged in a checker body (1), a second connection member (3) being arranged at the bottom of the first connection member (2), and a connection pin (4) extending to the outside of the checker body (1) for connection is arranged at one end of each of the first connection member (2) and the second connection member (3); A first verification member (5) movably connected to the verification body (1) via an axle pin is provided on one side of the bottom of the first connecting member (2) and is located inside the verification body (1). A second verification member (6) movably connected to the verification body (1) via an axle pin is provided at the bottom of the first verification member (5). A display screen (16) for displaying is provided on the outside of the verification body (1).

2. A current transformer calibration device according to claim 1, characterized in that: A contact block (7) mounted on the second verification piece (6) is provided on one side of the bottom of the first verification piece (5), and the top vertical cross-section of the contact block (7) is arranged to be in an arc shape.

3. A current transformer calibration device according to claim 2, characterized in that: A first induction member (8) mounted on the first connecting member (2) is provided at the top of the contact block (7), and a second induction member (9) is provided at one end of the top of the second connecting member (3) and at the bottom of the contact block (7).

4. A current transformer calibration device according to claim 1, characterized in that: A slider (10) is provided at one end of the first verification member (5) and the second verification member (6) away from the first connecting member (2) and the second connecting member (3), and the slider (10) is slidably connected to the verification device body (1).

5. A current transformer calibration device according to claim 4, characterized in that: The top of the sliding block (10) extends to an end of the second verification piece (6) away from the contact block (7), and a top plate (11) is provided on the top of the sliding block (10).

6. A current transformer calibration device according to claim 1, characterized in that: A pressure piece (12) extending into the interior of the tester body (1) is arranged at the top of the tester body (1), and stepped grooves (13) are provided on both sides of the bottom of the pressure piece (12). Adjustment blocks (14) located in the two stepped grooves (13) are respectively arranged at the ends of the first test piece (5) and the second test piece (6), and a spring (15) extending to the second test piece (6) is arranged on the adjustment block (14) belonging to the first test piece (5).

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