Direct current transformer testing device

Abstract

The utility model belongs to the field of direct current transformers, particularly relates to a direct current transformer testing device, and aims to solve the problems that a conventional testing device is relatively low in testing wiring efficiency of direct current transformers, is inconvenient to carry out compatibility testing on direct current transformers of different models, and is relatively low in adaptation degree. The device comprises a test host, a mounting seat, a clamping assembly and two connectors, the mounting seat is fixedly mounted on the test host, a fixing groove is formed in the mounting seat, a direct current transformer is mounted in the fixing groove, the clamping assembly is arranged in the fixing groove, the clamping assembly is connected with the direct current transformer, and the two connectors are connected with the direct current transformer. And two moving grooves are formed in the inner wall of the fixing groove. The testing device provided by the utility model has high testing and wiring efficiency on the DC current transformer, can carry out compatibility testing on DC current transformers of different models, and has high adaptation degree.

Description

Technical Field

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

[0002] A DC current transformer is a device used to measure the value of DC current, and is usually used for current measurement, feedback, control and protection in DC power transmission systems. Its working principle is similar to that of an AC current transformer. It converts DC current into a smaller current through the proportional relationship between the primary winding and the secondary winding, thereby facilitating measurement and protection. A DC current transformer test device is disclosed with the publication number CN219609197U, which includes a test bench, a positioning component and an adjustment component. The positioning component includes positioning plates with a circular plate structure symmetrically mounted on both sides of the upper end of the test bench, and clamps mounted between the positioning plates. A cylinder for lifting and lowering the clamp is also fixedly installed on the test bench at the rear end of the positioning plate. The clamp is also bound and installed with a current transformer to be tested, as well as terminals set on both sides of the lower front end of the current transformer.

[0003] The existing test device has low test wiring efficiency for DC current transformers, is inconvenient to perform compatibility tests on DC current transformers of different models, and has a low degree of adaptability. Utility Model Content

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A DC current transformer test device, comprising a test host, a mounting seat, a clamping assembly and two connectors, wherein the mounting seat is fixedly mounted on the test host, a fixing groove is provided on the mounting seat, a DC current transformer is installed in the fixing groove, the clamping assembly is arranged in the fixing groove, the clamping assembly is connected to the DC current transformer, two movable grooves are provided on the inner wall of the fixing groove, two connectors are respectively slidably mounted on the inner walls of the two movable grooves, the tops of the two connectors are provided with connecting grooves, the inner walls of the two connecting grooves are fixedly mounted with wiring pieces, the two wiring pieces are electrically connected to the test host, and the DC current transformer is provided with a plurality of connecting pieces. Two mounting grooves are provided at the bottom, and the connecting head is installed in the corresponding mounting grooves. Terminal heads are fixedly installed on the inner walls of the two mounting grooves, and the terminal heads are installed in the corresponding connecting heads, and the terminal heads are in contact with the corresponding terminal pieces. A threaded hole is provided on one side of the two connecting heads, and the same through hole is provided on the inner wall of one side of the two movable grooves. Two screw rods are rotatably connected in the through hole, and the ends of the two screw rods that are close to each other are fixedly connected with rotating gears, and the two rotating gears are meshed with each other. The screw rod is threadedly connected in the corresponding threaded hole, and one end of the screw rod is fixedly connected with a control knob, and the control knob is arranged on one side of the mounting seat.

[0006] Specifically, the clamping assembly includes two clamping plates, the two clamping plates are slidably mounted in the fixing groove, and the two clamping plates are respectively in contact with two sides of the DC current transformer.

[0007] Specifically, a movable seat is slidably installed on the side of the two clamping plates away from each other, and adjustment grooves are opened on the inner walls of both sides of the fixed groove. Rotating plates are rotatably installed on the inner walls of the two adjusting grooves, and one end of the two rotating plates is rotatably installed on the two movable seats respectively.

[0008] Specifically, a fixed cavity is provided on the mounting seat, and two rotating rods are rotatably connected to the inner wall of one side of the fixed cavity. One end of the two rotating rods is fixedly mounted on two rotating plates respectively, and the other ends of the two rotating rods are fixedly connected to driving gears. Two racks are slidably mounted on the inner wall of the fixed cavity, and the racks are meshed with corresponding driving gears.

[0009] Specifically, one end of the two racks is provided with a threaded hole 2, and the inner walls on both sides of the fixed cavity are rotatably installed with a screw rod 2, and the screw rod 2 is threadedly connected in the corresponding threaded hole 2, and the ends of the two screw rods 2 that are close to each other are fixedly connected with a rotating gear, and the two rotating gears are meshed with each other, and the other end of the screw rod 2 is fixedly installed with a control knob 2, and the control knob 2 is arranged on one side of the mounting seat.

[0010] Specifically, grooves are provided on the inner walls on both sides of the connecting groove, and clamping heads are slidably installed in the two grooves, and the two clamping heads are in contact with the wiring head.

[0011] Specifically, springs are fixedly mounted on one end of the two clamping heads, and one end of the two springs is fixedly connected to the inner walls of the two grooves respectively.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model provides a DC current transformer testing device. A control knob drives a lead screw to rotate, thereby adjusting the use distance between two connectors. The DC current transformer is placed in a fixed slot, and two clamping heads can stabilize the position of the connector.

[0014] (2) The utility model provides a DC current transformer test device. Rotating the control knob 2 can drive the screw 2 to rotate. The clamping plate slides in the fixed groove and clamps the DC current transformer. After the DC current transformer is connected to the test host through two connectors, the DC resistance test of the DC current transformer can be performed through the test host. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following will briefly introduce the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and the structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance, and any structural modification, change in proportional relationship or adjustment of size.

[0016] Figure 1 This is a schematic diagram of the main structure of a DC current transformer test device proposed by the utility model;

[0017] Figure 2 A three-dimensional structural schematic diagram of a mounting base, a connector, a clamping plate, a moving base and a rotating plate of a DC current transformer test device proposed by the utility model;

[0018] Figure 3 This is a structural schematic diagram of a mounting base and a clamping assembly of a DC current transformer test device proposed by the utility model;

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0020] In the figure: 1. test host; 2. mounting base; 3. DC current transformer; 4. connector; 5. screw rod 1; 6. rotating gear; 7. control knob 1; 8. mounting slot; 9. terminal; 10. clamping head; 11. spring; 12. clamping plate; 13. moving base; 14. rotating plate; 15. rotating rod; 16. driving gear; 17. rack; 18. screw rod 2; 19. rotating gear; 20. control knob 2. DETAILED DESCRIPTION

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, it is obvious that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0022] Reference Figure 1-4A DC current transformer test device comprises a test host 1, a mounting seat 2 and two connectors 4, wherein the mounting seat 2 is fixedly mounted on the test host 1, a fixing groove is provided on the mounting seat 2, a DC current transformer 3 is installed in the fixing groove, two movable grooves are provided on the inner wall of the fixing groove, two connectors 4 are respectively slidably mounted on the inner walls of the two movable grooves, the tops of the two connectors 4 are provided with connecting grooves, the inner walls of the two connecting grooves are fixedly mounted with wiring pieces, the two wiring pieces are electrically connected to the test host 1, the bottom of the DC current transformer 3 is provided with two mounting grooves 8, the connectors 4 is installed in the corresponding installation groove 8, and the inner walls of the two installation grooves 8 are fixedly installed with terminal heads 9, the terminal heads 9 are installed in the corresponding connecting heads 4, and the terminal heads 9 are in contact with the corresponding terminal pieces, one side of the two connecting heads 4 is provided with a threaded hole 1, and the inner wall of one side of the two movable grooves is provided with a same through hole, and two screw rods 1 5 are rotatably connected in the through hole, and the ends of the two screw rods 1 5 close to each other are fixedly connected with a rotating gear 6, and the two rotating gears 6 are meshed, and the screw rod 1 5 is threadedly connected in the corresponding threaded hole 1, and one end of the screw rod 1 5 is fixedly connected with a control knob 1 7, and the control knob 1 7 is provided with a screw rod 1 5. The mounting seat 2 is arranged on one side, and two clamping plates 12 are slidably installed in the fixed groove. The two clamping plates 12 are respectively in contact with the two sides of the DC current transformer 3. The two clamping plates 12 are slidably installed with a moving seat 13 on the side away from each other. Adjustment grooves are provided on the inner walls of both sides of the fixed groove. Rotating plates 14 are rotatably installed on the inner walls of the two adjusting grooves. One end of the two rotating plates 14 is rotatably installed on the two moving seats 13 respectively. A fixed cavity is provided on the mounting seat 2. Two rotating rods 15 are rotatably connected on the inner wall of one side of the fixed cavity. One end of the two rotating rods 15 is respectively fixedly installed on the two rotating plates 14 The other ends of the two rotating rods 15 are fixedly connected to the driving gear 16, and two racks 17 are slidably installed on the inner wall of the fixed cavity, and the racks 17 are meshed with the corresponding driving gear 16. One end of the two racks 17 is provided with a threaded hole 2, and screw rods 18 are rotatably installed on the inner walls of both sides of the fixed cavity. The screw rods 18 are threadedly connected in the corresponding threaded holes 2, and the ends of the two screw rods 18 close to each other are fixedly connected to the rotating gear 19, and the two rotating gears 19 are meshed. The other end of the screw rods 18 is fixedly installed with a control knob 20, and the control knob 20 is arranged on one side of the mounting seat 2.

[0023] In this embodiment, grooves are provided on the inner walls on both sides of the connecting groove, and clamping heads 10 are slidably installed in the two grooves. The two clamping heads 10 are in contact with the terminal head 9, and springs 11 are fixedly installed at one end of the two clamping heads 10, and one end of the two springs 11 is fixedly connected to the inner walls of the two grooves respectively.

[0024] In this embodiment, the control knob 17 is rotated, the control knob 17 drives the screw rod 15 to rotate, the screw rod 15 drives the rotating gear 6 to rotate, the rotating gear 6 drives another rotating gear 6 and the screw rod 15 to rotate, the screw rod 15 drives the corresponding connector 4 to move, and the use spacing of the two connectors 4 can be adjusted. The DC current transformer 3 is placed in the fixing groove, the connector 4 is inserted into the installation groove 8, the terminal head 9 is inserted into the connecting groove and contacts the terminal piece, the two clamping heads 10 are squeezed and squeeze the spring 11, the elastic force of the spring 11 can provide pressure for the clamping heads 10, and the two clamping heads 10 can stabilize the position of the terminal head 9, and the control knob 20 can be rotated to drive the screw rod 2 18 rotates, the second screw rod 18 drives the rotating gear 19 to rotate, the rotating gear 19 drives another rotating gear 19 and the second screw rod 18 to rotate, the second screw rod 18 drives the corresponding rack 17 to move, the rack 17 drives the corresponding driving gear 16 to rotate, the driving gear 16 drives the corresponding rotating rod 15 to rotate, the rotating rod 15 drives the corresponding moving seat 13 to move, the moving seat 13 drives the corresponding clamping plate 12 to move, the clamping plate 12 slides in the fixed groove and clamps the DC current transformer 3, after the DC current transformer 3 is connected to the test host 1 through the two connectors 4, the DC resistance test of the DC current transformer 3 can be performed through the test host 1.

[0025] The technical progress achieved by the utility model compared with the prior art is that the test device of the utility model has a high test wiring efficiency for DC current transformers and can perform compatibility tests on DC current transformers of different models with a high degree of adaptability.

Claims

1. A DC current transformer test device, characterized in that: The invention comprises a test host (1), a mounting seat (2), a clamping assembly and two connectors (4), wherein the mounting seat (2) is fixedly mounted on the test host (1), the mounting seat (2) is provided with a fixing groove, a DC current transformer (3) is installed in the fixing groove, the clamping assembly is arranged in the fixing groove, the clamping assembly is connected to the DC current transformer (3), the inner wall of the fixing groove is provided with two movable grooves, the two connectors (4) are respectively slidably mounted on the inner walls of the two movable grooves, the tops of the two connectors (4) are provided with connecting grooves, the inner walls of the two connecting grooves are fixedly provided with wiring pieces, the two wiring pieces are electrically connected to the test host (1), the bottom of the DC current transformer (3) is provided with two mounting grooves (8), the The connecting head (4) is installed in the corresponding installation groove (8), and the inner walls of the two installation grooves (8) are fixedly installed with a wiring head (9), and the wiring head (9) is installed in the corresponding connecting head (4), and the wiring head (9) is in contact with the corresponding wiring piece. One side of the two connecting heads (4) is provided with a threaded hole, and the inner wall of one side of the two movable grooves is provided with a same through hole. Two screw rods (5) are rotatably connected in the through hole, and the ends of the two screw rods (5) close to each other are fixedly connected with a rotating gear (6), and the two rotating gears (6) are meshed. The screw rods (5) are threadedly connected in the corresponding threaded hole, and one end of the screw rods (5) is fixedly connected with a control knob (7), and the control knob (7) is arranged on one side of the mounting seat (2).

2. A DC current transformer testing device according to claim 1, characterized in that: The clamping assembly comprises two clamping plates (12), the two clamping plates (12) being slidably mounted in the fixing grooves, and the two clamping plates (12) being in contact with two sides of the DC current transformer (3) respectively.

3. A DC current transformer testing device according to claim 2, characterized in that: A movable seat (13) is slidably mounted on the side of the two clamping plates (12) away from each other, and adjustment slots are provided on the inner walls of both sides of the fixed slot. Rotating plates (14) are rotatably mounted on the inner walls of the two adjustment slots, and one end of the two rotating plates (14) is rotatably mounted on the two movable seats (13) respectively.

4. A DC current transformer testing device according to claim 3, characterized in that: The mounting seat (2) is provided with a fixed cavity, and two rotating rods (15) are rotatably connected to an inner wall of one side of the fixed cavity, one end of the two rotating rods (15) is fixedly mounted on two rotating plates (14) respectively, and the other ends of the two rotating rods (15) are fixedly connected to a driving gear (16), and two racks (17) are slidably mounted on the inner wall of the fixed cavity, and the racks (17) are meshed with the corresponding driving gears (16).

5. A DC current transformer testing device according to claim 4, characterized in that: A threaded hole (2) is provided at one end of each of the two racks (17); a screw rod (18) is rotatably mounted on the inner walls of both sides of the fixed cavity; the screw rod (18) is threadedly connected in the corresponding threaded hole (2); a rotating gear (19) is fixedly connected to one end of each of the two screw rods (18) that is close to each other; the two rotating gears (19) are meshed with each other; a control knob (20) is fixedly mounted on the other end of each of the screw rods (18); and the control knob (20) is arranged on one side of the mounting seat (2).

6. A DC current transformer testing device according to claim 1, characterized in that: Grooves are provided on the inner walls on both sides of the connection groove, and clamping heads (10) are slidably installed in the two grooves, and the two clamping heads (10) are in contact with the wiring head (9).

7. A DC current transformer testing device according to claim 6, characterized in that: A spring (11) is fixedly mounted on one end of each of the two clamping heads (10), and one end of each of the two springs (11) is fixedly connected to the inner walls of the two grooves respectively.

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