Testing device of current transformer

Abstract

The utility model discloses a testing device for a current transformer, which belongs to the technical field of current transformer testing and comprises a testing table, two groups of mounting seats are arranged on one side of the top of the testing table, and a transformer tester is fixedly mounted on one side of one group of mounting seats and located on the top of the testing table. One side of the test bench is provided with a mounting seat, the other side of the test bench is provided with three groups of test columns at corresponding positions above the mounting seat, an adjusting assembly is arranged between the test columns and the test bench, a mounting mechanism is arranged between the mounting seat and the test bench, the top of the mounting seat is provided with three groups of protection mechanisms, and the protection mechanisms are connected with a current transformer body. Through the arrangement of the protection mechanism, the periphery and the two ends of the top of the current transformer body can be protected through the protection plate and the protection box, the number of shells, exposed outside, of the current transformer body is reduced, and the situation that the current transformer body is damaged after accidents occur during testing can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformer testing, in particular to a current transformer testing device. Background Art

[0002] A current transformer is an electrical component that uses the principle of electromagnetic induction to convert large currents into small ones for measurement or protection purposes. This allows for the standardization and miniaturization of measuring instruments, protection devices, and automatic control equipment. Therefore, the induction coil within the current transformer is its most critical component. Current transformers require factory-qualified coil performance testing to ensure compliance. Traditional transformer testing methods are entirely manual. Workers place probes into the magnetic core of each phase of the current transformer, one by one. The secondary side of the current transformer then generates a corresponding current signal. This secondary output current signal is then tested using an instrument to verify the coil performance of each phase. However, this method requires manual testing of each phase of the current transformer, resulting in low efficiency and high labor intensity.

[0003] A Chinese patent with the publication number CN220913332U discloses a current transformer test device, belonging to the field of transformer testing technology. The device comprises a test bench (2), characterized in that at least one test station for placing a current transformer (1) to be tested is provided on the surface of the test bench (2), a lifting mechanism is fixed on the upper part of the test station, three test columns (9) respectively connected to a test power supply are provided at the movable end of the lifting mechanism, the three test columns (9) respectively corresponding to the magnetic cores of the primary three-phase coil of the current transformer (1) downward, a controller for controlling the action of the lifting mechanism and the on-off of the test power supply is also provided, and the secondary side of the three-phase coil of the current transformer (1) is connected to the controller.

[0004] The current transformer test device involved in the above patent still has some obvious shortcomings in actual use. When testing the current transformer, the device does not protect the surface of the current transformer. Therefore, we need to propose a current transformer test device. Utility Model Content

[0005] The purpose of the present utility model is to provide a testing device for a current transformer, which has a structure that is convenient for protecting the surface of the current transformer, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a testing device for a current transformer, comprising a test bench, two groups of mounting seats are provided on one side of the top of the test bench, a transformer tester is fixedly installed on one side of one group of mounting seats and located on the top of the test bench, three groups of test columns are provided at corresponding positions above the other group of mounting seats, an adjustment component for adjusting the test column is provided between the test column and the top of the test bench, a mounting mechanism is provided between the bottom of the mounting seat and the top of the test bench, and the mounting seat is installed on the top of the test bench through the mounting mechanism, three groups of protective mechanisms are provided on the top of the mounting seat, the protective mechanism is connected to the current transformer body, and the three groups of current transformer bodies and the three groups of test columns are arranged correspondingly.

[0007] Preferably, the protective mechanism includes a protective box fixedly mounted on the top of the mounting seat, two groups of protective blocks are adapted to be provided at both ends of the interior of the protective box, and four types of first telescopic springs are fixedly mounted between one side of the two groups of protective blocks and the inner walls of the two ends of the protective box.

[0008] Preferably, a groove is opened on one side of the protective block, a connecting plate is adapted to be connected to the groove, several groups of second telescopic springs are fixedly connected between the top of the connecting plate and the inner wall of the upper end of the groove, and a protective plate is fixedly installed on one side of the connecting plate.

[0009] Preferably, the mounting mechanism includes mounting blocks fixedly mounted at both ends of the bottom of the mounting base and two sets of mounting grooves opened at one end of the top of the test bench, the mounting grooves are arranged corresponding to the mounting blocks, and the surface of the mounting blocks is slidably connected to the inner cavity of the mounting grooves.

[0010] Preferably, mounting holes are provided on the bottom of the mounting block and the inner wall of the mounting groove, and the two groups of mounting holes are arranged correspondingly, and magnet blocks are adapted to be provided inside the mounting holes.

[0011] Preferably, the adjustment assembly includes a support column fixedly mounted on one end of the top of the test bench, a sliding groove is provided on one side of the support column, a screw rod is rotatably connected inside the sliding groove, one end of the screw rod passes through one end of the sliding groove and extends to the top of the support column and is connected to a control mechanism.

[0012] Preferably, a sliding block is adapted to be provided inside the sliding groove, the interior of the sliding block is threadedly connected to the surface of the screw rod, and the sliding block is slidably connected to the inner cavity of the sliding groove through the screw rod, an electric push rod is fixedly installed on one side of the sliding block, and the output end of the electric push rod is fixedly connected to an adjustment box.

[0013] Preferably, a bidirectional screw rod is rotatably connected inside the regulating box, and one end of the bidirectional screw rod passes through the regulating box and extends to one side of the regulating box and is fixedly connected to an regulating wheel.

[0014] Preferably, movable grooves are provided at both ends of the bottom of the adjusting box, the interior of the movable grooves is adapted to match the surface of the test column, and the tops of the two groups of test columns are respectively fixedly connected with movable blocks through the inner cavities of the two groups of movable grooves, the interiors of the two groups of movable blocks are respectively threadedly connected to the two ends of the surface of the bidirectional screw rod, and the two groups of movable blocks are slidably connected to the interior of the adjusting box through the bidirectional screw rod.

[0015] Preferably, the control mechanism includes a first bevel gear provided at the top of the support column and fixedly mounted on one end of the screw rod, and a motor provided on one side of the support column, the output end of the motor is fixedly connected to a second bevel gear, the surface of the second bevel gear is adapted to match the surface of the first bevel gear, and the first bevel gear and the second bevel gear are meshed and connected together.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model provides a protection mechanism, and can utilize the protection plate and the protection box to protect the periphery and the top ends of the current transformer body, thereby reducing the shell of the current transformer body exposed to the outside world, and can avoid damage to the current transformer body after an accident occurs during the test of the current transformer body. At the same time, it can also facilitate the fixation of the current transformer body, facilitate installation or disassembly, and the operation is simple, convenient and fast, thereby improving the practicality of the device.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the installation mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the regulating box of the present utility model;

[0023] Figure 5It is a structural diagram of the protective mechanism of the utility model.

[0024] In the figure: 1. test bench; 2. mounting base; 3. transformer tester; 4. test column; 5. mounting mechanism; 501. mounting block; 502. mounting slot; 503. mounting hole; 504. magnet block; 6. protective mechanism; 601. protective box; 602. protective block; 603. first telescopic spring; 604. groove; 605. connecting plate; 606. second telescopic spring; 607. protective plate; 7. current transformer body; 8. support column; 9. sliding slot; 10. screw rod; 11. control mechanism; 111. first bevel gear; 112. motor; 113. second bevel gear; 12. sliding block; 13. electric push rod; 14. adjusting box; 15. bidirectional screw rod; 16. adjusting wheel; 17. moving slot; 18. moving block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model provides a technical solution: a current transformer test device, including a test bench 1, a mounting base 2, a transformer tester 3, a test column 4, an adjustment component, a mounting mechanism 5, a protection mechanism 6 and a current transformer body 7.

[0027] Preferably, two groups of mounting seats 2 are provided on one side of the top of the test bench 1, and a transformer tester 3 is fixedly installed on one side of one group of mounting seats 2 and located on the top of the test bench 1, and three groups of test columns 4 are provided at the corresponding position above the other group of mounting seats 2, and an adjustment component for adjusting the test column 4 is provided between the test column 4 and the top of the test bench 1, and a mounting mechanism 5 is provided between the bottom of the mounting seat 2 and the top of the test bench 1, and the mounting seat 2 is installed on the top of the test bench 1 through the mounting mechanism 5, and three groups of protective mechanisms 6 are provided on the top of the mounting seat 2, and the protective mechanism 6 is connected to the current transformer body 7, and the three groups of current transformer bodies 7 are arranged corresponding to the three groups of test columns 4.

[0028] Preferably, the protective mechanism 6 includes: a protective box 601, a protective block 602, a first telescopic spring 603, a groove 604, a connecting plate 605, a second telescopic spring 606 and a protective plate 607. The protective box 601 is fixedly installed on the top of the mounting seat 2. Two groups of protective blocks 602 are adapted to be provided at both ends of the interior of the protective box 601. Four types of first telescopic springs 603 are fixedly installed between one side of the two groups of protective blocks 602 and the inner walls of the two ends of the protective box 601 respectively. A groove 604 is provided on one side of the protective block 602. The groove 604 is adapted to be connected with a connecting plate 605. Several groups of second telescopic springs 606 are fixedly connected between the top of the connecting plate 605 and the inner wall of the upper end of the groove 604. A protective plate 607 is fixedly installed on one side of the connecting plate 605.

[0029] Specifically, through the coordinated use of the protective box 601, the protective block 602, the first telescopic spring 603, the groove 604, the connecting plate 605, the second telescopic spring 606 and the protective plate 607, the protective plate 607 and the protective box 601 can be used to protect the surroundings and top ends of the current transformer body 7, reducing the shell of the current transformer body 7 exposed to the outside world, and avoiding damage to the current transformer body 7 after an accident during testing. At the same time, it is also convenient to fix the current transformer body 7, facilitate installation or disassembly, and the operation is simple, convenient and fast, thereby improving the practicality of the device.

[0030] Preferably, the mounting mechanism 5 includes: a mounting block 501, a mounting groove 502, a mounting hole 503 and a magnet block 504, two groups of mounting blocks 501 are respectively fixedly mounted at both ends of the bottom of the mounting base 2, two groups of mounting grooves 502 are opened at one end of the top of the test bench 1, the mounting grooves 502 and the mounting blocks 501 are arranged correspondingly, and the surface of the mounting block 501 is slidably connected to the inner cavity of the mounting groove 502, the bottom of the mounting block 501 and the inner wall of the mounting groove 502 are both provided with mounting holes 503, and the two groups of mounting holes 503 are arranged correspondingly, and the inside of the mounting holes 503 is adapted to be provided with magnet blocks 504.

[0031] Preferably, the adjustment assembly includes: a support column 8, a sliding groove 9, a screw rod 10, a control mechanism 11, a sliding block 12, an electric push rod 13, an adjustment box 14, a bidirectional screw rod 15, an adjustment wheel 16, a moving groove 17 and a moving block 18. The support column 8 is fixedly mounted on one end of the top of the test bench 1, and a sliding groove 9 is opened on one side of the support column 8. The internal rotation of the sliding groove 9 is connected to the screw rod 10. One end of the screw rod 10 passes through one end of the sliding groove 9 and extends to the top of the support column 8 and is connected to the control mechanism 11. The interior of the sliding groove 9 is adapted to be provided with a sliding block 12. The interior of the sliding block 12 is threadedly connected to the surface of the screw rod 10, and the sliding block 12 is slidably connected to the inner cavity of the sliding groove 9 through the screw rod 10. An electric push rod 13 is fixedly installed on one side of the moving block 12, and the output end of the electric push rod 13 is fixedly connected to the adjusting box 14. The inside of the adjusting box 14 is rotatably connected to a bidirectional screw rod 15. One end of the bidirectional screw rod 15 passes through the adjusting box 14 and extends to one side of the adjusting box 14 and is fixedly connected to an adjusting wheel 16. Moving grooves 17 are provided at both ends of the bottom of the adjusting box 14. The interior of the moving groove 17 is adapted to the surface of the test column 4, and the tops of the two groups of test columns 4 are respectively fixedly connected to moving blocks 18 through the inner cavities of the two groups of moving grooves 17. The interiors of the two groups of moving blocks 18 are respectively threadedly connected to the two ends of the surface of the bidirectional screw rod 15, and the two groups of moving blocks 18 are slidably connected to the interior of the adjusting box 14 through the bidirectional screw rod 15.

[0032] Preferably, the control mechanism 11 includes: a first bevel gear 111, a motor 112 and a second bevel gear 113. The first bevel gear 111 is arranged at the top of the support column 8 and is fixedly mounted on one end of the screw rod 10. The motor 112 is arranged on one side of the support column 8. The output end of the motor 112 is fixedly connected to the second bevel gear 113. The surface of the second bevel gear 113 is adapted to match the surface of the first bevel gear 111. The first bevel gear 111 and the second bevel gear 113 are meshed and connected together.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A current transformer testing device, characterized in that: include: Test bench (1); Two groups of mounting seats (2) are arranged on one side of the top of the test bench (1), a mutual inductor tester (3) is fixedly installed on one side of the mounting seats (2) and located on the top of the test bench (1), and three groups of test columns (4) are arranged at corresponding positions above the other group of mounting seats (2), and an adjustment component for adjusting the test columns (4) is provided between the test columns (4) and the top of the test bench (1); A mounting mechanism (5) is provided between the bottom of the mounting seat (2) and the top of the test bench (1), and the mounting seat (2) is mounted on the top of the test bench (1) via the mounting mechanism (5). Three groups of protective mechanisms (6) are provided on the top of the mounting seat (2), and the protective mechanisms (6) are connected to current transformer bodies (7). The three groups of current transformer bodies (7) are correspondingly provided with the three groups of test columns (4).

2. A current transformer testing device according to claim 1, characterized in that: The protection mechanism (6) comprises a protection box (601) fixedly mounted on the top of the mounting seat (2), two groups of protection blocks (602) are adapted to be provided at both ends of the interior of the protection box (601), and four types of first telescopic springs (603) are fixedly mounted between one side of the two groups of protection blocks (602) and the inner walls of the two ends of the protection box (601).

3. A current transformer testing device according to claim 2, characterized in that: A groove (604) is provided on one side of the protective block (602), and a connecting plate (605) is adapted to be connected to the groove (604). Several groups of second telescopic springs (606) are fixedly connected between the top of the connecting plate (605) and the inner wall of the upper end of the groove (604), and a protective plate (607) is fixedly installed on one side of the connecting plate (605).

4. The current transformer testing device according to claim 1, characterized in that: The mounting mechanism (5) comprises mounting blocks (501) fixedly mounted on both ends of the bottom of the mounting seat (2) and two groups of mounting grooves (502) opened at one end of the top of the test bench (1); the mounting grooves (502) are arranged corresponding to the mounting blocks (501), and the surface of the mounting block (501) is slidably connected to the inner cavity of the mounting grooves (502).

5. A current transformer testing device according to claim 4, characterized in that: The bottom of the mounting block (501) and the inner wall of the mounting groove (502) are both provided with mounting holes (503), and the two groups of mounting holes (503) are arranged correspondingly, and the interior of the mounting holes (503) is adapted to be provided with magnet blocks (504).

6. The current transformer testing device according to claim 1, characterized in that: The adjustment assembly includes a support column (8) fixedly mounted on one end of the top of the test bench (1), a sliding groove (9) is provided on one side of the support column (8), a screw rod (10) is rotatably connected inside the sliding groove (9), and one end of the screw rod (10) passes through one end of the sliding groove (9) and extends to the top of the support column (8) and is connected to a control mechanism (11).

7. A current transformer testing device according to claim 6, characterized in that: The interior of the sliding groove (9) is adapted to be provided with a sliding block (12), the interior of the sliding block (12) is threadedly connected to the surface of the screw rod (10), and the sliding block (12) is slidably connected to the inner cavity of the sliding groove (9) through the screw rod (10), an electric push rod (13) is fixedly installed on one side of the sliding block (12), and the output end of the electric push rod (13) is fixedly connected to the adjustment box (14).

8. A current transformer testing device according to claim 7, characterized in that: The regulating box (14) is internally rotatably connected to a bidirectional screw rod (15), one end of which passes through the regulating box (14) and extends to one side of the regulating box (14) where it is fixedly connected to an regulating wheel (16).

9. A current transformer testing device according to claim 8, characterized in that: The two ends of the bottom of the regulating box (14) are provided with moving grooves (17), the interior of the moving grooves (17) is adapted to the surface of the test column (4), and the tops of the two groups of test columns (4) are respectively fixedly connected with moving blocks (18) through the inner cavities of the two groups of moving grooves (17), the interiors of the two groups of moving blocks (18) are respectively threadedly connected to the two ends of the surface of the bidirectional screw rod (15), and the two groups of moving blocks (18) are slidably connected to the interior of the regulating box (14) through the bidirectional screw rod (15).

10. The current transformer testing device according to claim 6, characterized in that: The control mechanism (11) comprises a first bevel gear (111) provided on the top of the support column (8) and fixedly mounted on one end of the screw rod (10), and a motor (112) provided on one side of the support column (8); the output end of the motor (112) is fixedly connected to a second bevel gear (113); the surface of the second bevel gear (113) is adapted to match the surface of the first bevel gear (111); and the first bevel gear (111) and the second bevel gear (113) are meshed and connected together.

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