Mutual inductor combination structure for three-phase guide rail meter

Abstract

The utility model relates to the technical field of current transformers, in particular to a transformer combination structure for a three-phase guide rail meter, which comprises a combined mounting base for combining and mounting three groups of transformer bodies together, and the top of the combined mounting base is provided with the three groups of transformer bodies. The top of the combined installation base is further provided with a wiring assembly facilitating wiring of the mutual inductor body. According to the utility model, the three groups of mutual inductor bodies are mounted on the insulating mounting plate, so that the three groups of mutual inductor bodies and the insulating mounting plate form a whole, the three groups of mutual inductor bodies are arranged more compactly, the use space is saved, and meanwhile, the mutual inductor bodies are also very fast and convenient to disassemble and are beneficial to replacement and maintenance. During mounting and fixing, only the mounting plate needs to be fixed, the mutual inductor bodies do not need to be fixed one by one, and mounting is more convenient and faster. The wiring assembly enables wiring of the mutual inductor body to be more convenient, and screws do not need to be screwed frequently.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a transformer combination structure for a three-phase rail meter. Background Art

[0002] A current transformer is a special transformer that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction. It consists of a closed iron core and windings. Its primary winding has few turns and is connected in series in the circuit of the current to be measured, so it often has the entire current of the circuit flowing through it. The secondary winding has more turns and is connected in series in the measuring instrument and the protection circuit. When the current transformer is working, its secondary circuit is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit. The three-phase rail meter is a common power measuring instrument, widely used in various industrial and commercial occasions. The transformer is a device used for transformer and current measurement. When in use, three independent transformers need to be connected to the three-phase rail meter respectively.

[0003] However, during the connection process, each transformer must be installed and fixed one by one, which is rather troublesome. At the same time, the installation positions of each transformer are scattered, occupying a large space. At the same time, it is also very inconvenient to repair, replace and wire the transformer. Utility Model Content

[0004] The purpose of the utility model is to provide a mutual inductor combination structure for a three-phase rail meter, which saves use space and solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a transformer assembly structure for a three-phase rail meter, comprising a combined mounting base for assembling and mounting three sets of transformer bodies together, three sets of transformer bodies being mounted on the top of the combined mounting base, and a wiring assembly for facilitating wiring of the transformer bodies being also provided on the top of the combined mounting base;

[0006] Among them, the combined mounting base includes: an insulating mounting plate, a circular through hole is opened on one side of the insulating mounting plate, the hole wall of the circular through hole is slidably sleeved on the outside of the positioning pin rod, one end of the positioning pin rod is fixedly connected to one end of the connecting rod, the other end of the connecting rod is fixedly connected to the outside of the pull ring, the outside of the connecting rod is slidably inserted into the inside of one side of the U-shaped reaction plate, and the other side of the U-shaped reaction plate is fixedly connected to the side of the insulating mounting plate at the position of the circular through hole.

[0007] Preferably, three groups of slots are provided on the top of the insulating mounting plate, and the slots are connected to the circular through holes.

[0008] Preferably, the outer portion of the connecting rod is slidably inserted into the inner ring of the reset spring, and both ends of the reset spring are supported between the positioning pin rod and the U-shaped reaction plate.

[0009] Preferably, two sides of the insulating mounting plate are fixedly connected to the outside of the wing plate, and the wing plate is used to fix the insulating mounting plate.

[0010] Preferably, a connection pin is provided on one side of the transformer body, the bottom of the transformer body is fixedly connected to the top of the plug board, and the outside of the plug board is slidably plugged into the slot wall of the slot.

[0011] Preferably, a plug hole is provided on the side of the plug plate, and the hole wall of the plug hole is slidably sleeved on the outside of the positioning pin rod.

[0012] Preferably, the wiring assembly comprises: an insulating clamping plate 1 and an insulating clamping plate 2, and the bottom of the insulating clamping plate 2 is fixedly connected to the top of the insulating mounting plate.

[0013] Preferably, the top of the second insulating clamping plate is fixedly connected to the bottom end of the threaded column, and the outer portion of the threaded column is slidably inserted into the inner portion of the first insulating clamping plate.

[0014] Preferably, the external thread of the threaded column is connected to the inner ring of the threaded sleeve, and the outer part of the threaded column is slidably inserted into the inner ring of the crimping spring and the gasket, and the crimping spring is located between the threaded sleeve and the gasket.

[0015] Preferably, arc-shaped grooves are provided at the bottom of the first insulating clamping plate and the top of the second insulating clamping plate, and the groove walls of the arc-shaped grooves are fixedly connected to the outside of the conductive layer, and the conductive layer is clamped to the outside of the connection pins.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model installs three sets of transformer bodies on an insulating mounting plate, so that the three sets of transformer bodies and the insulating mounting plate form an integral whole, so that the three sets of transformer bodies are arranged more compactly, saving the use space, and at the same time, the transformer bodies are also very quick and convenient to disassemble, which is conducive to replacement and maintenance. When installing and fixing, it is only necessary to fix the mounting plate, and there is no need to fix each transformer body one by one, so the installation is more convenient and quick. The wiring assembly makes it more convenient to connect the transformer body, and there is no need to frequently screw.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the wiring assembly structure of the utility model;

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

[0022] Figure 4 This is a schematic diagram of the structure of the combined mounting base of the utility model;

[0023] Figure 5 It is an enlarged schematic diagram of point A of the present utility model.

[0024] In the figure: 1. Wiring assembly; 11. Clamp one; 12. Clamp two; 13. Conductive layer; 14. Arc groove; 15. Gasket; 16. Screw sleeve; 17. Threaded column; 18. Crimp spring; 2. Combined mounting base; 21. Wing plate; 22. Insulating mounting plate; 23. Slot; 24. Circular through hole; 25. Positioning pin rod; 26. Reset spring; 27. U-shaped reaction plate; 28. Connecting rod; 29. ​​Pull ring; 3. Transformer body; 31. Wiring pin; 32. Socket; 33. Plug plate. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-5 The utility model provides a technical solution: a transformer combination structure for a three-phase rail meter, comprising: a combined mounting base 2 for mounting three groups of transformer bodies 3 together, three groups of transformer bodies 3 are mounted on the top of the combined mounting base 2, and a wiring assembly 1 is also provided on the top of the combined mounting base 2 for facilitating wiring of the transformer bodies 3.

[0027] Furthermore, by centrally installing the three groups of transformer bodies 3 on the combined mounting base 2, the three groups of transformer bodies 3 form a whole, the arrangement is more compact, and the use space is more saved. At the same time, the combined mounting base 2 makes the transformer body 3 very quick to disassemble and assemble, making it more convenient to replace and repair the transformer body 3.

[0028] The combined mounting base 2 comprises: an insulating mounting plate 22, a circular through hole 24 is provided on one side of the insulating mounting plate 22, the hole wall of the circular through hole 24 is slidably sleeved on the outside of the positioning pin rod 25, one end of the positioning pin rod 25 is fixedly connected to one end of the connecting rod 28, the other end of the connecting rod 28 is fixedly connected to the outside of the pull ring 29, the outside of the connecting rod 28 is slidably inserted into the inside of one side of the U-shaped reaction plate 27, and the other side of the U-shaped reaction plate 27 is fixedly connected to the side of the insulating mounting plate 22 at the position of the circular through hole 24. Three groups of slots 23 are provided on the top of the insulating mounting plate 22, and the slots 23 are connected to the circular through hole 24. The outside of the connecting rod 28 is slidably inserted into the inner ring of the reset spring 26, and the two ends of the reset spring 26 are supported between the positioning pin rod 25 and the U-shaped reaction plate 27. Both sides of the insulating mounting plate 22 are fixedly connected to the outside of the wing plate 21, and the wing plate 21 is used to fix the insulating mounting plate 22.

[0029] Further, the plug plate 33 at the bottom of the transformer body 3 is inserted into the slot 23 at the top of the insulating mounting plate 22. Before insertion, the pull ring 29 is pulled away from the U-shaped reaction plate 27. The pull ring 29 drives the positioning pin 25 to move through the connecting rod 28, so that the end of the positioning pin 25 is pulled out of the slot 23 to prevent the positioning pin 25 from hindering the plug plate 33 from being inserted into the slot 23. When the plug plate 33 is fully inserted into the slot 23, the socket 32 ​​is aligned with the circular through hole 24, and then the pull ring 29 is released, and the reset spring 26 pushes the positioning pin 25. Insert the jack 32, so that the plug board 33 and the insulating mounting plate 22 cannot be separated, and thus the transformer body 3 and the insulating mounting plate 22 cannot be separated. The three groups of transformer bodies 3 are installed on the insulating mounting plate 22 in the above manner, so that the three groups of transformer bodies 3 and the insulating mounting plate 22 form a whole, so that the three groups of transformer bodies 3 are arranged more compactly, saving the use space. At the same time, when installing and fixing, it is only necessary to fix the insulating mounting plate 22, and there is no need to fix each transformer body 3 one by one, so the installation is more convenient and quick.

[0030] A connection pin 31 is provided on one side of the transformer body 3, the bottom of the transformer body 3 is fixedly connected to the top of the plug board 33, and the outside of the plug board 33 is slidably plugged into the groove wall of the slot 23. A plug hole 32 is opened on the side of the plug board 33, and the hole wall of the plug hole 32 is slidably sleeved on the outside of the positioning pin rod 25.

[0031] Furthermore, when the transformer body 3 needs to be replaced, it is only necessary to pull the pull ring 29 away from the U-shaped reaction plate 27 to remove the positioning pin rod 25 from the socket 32. In this way, the transformer body 3 can be removed from the insulating mounting plate 22, and then the screw sleeve 16 is loosened to pull the wires of the transformer body 3 out from between the two conductive layers 13, so that the transformer body 3 can be disassembled very quickly and conveniently, which is conducive to replacement and maintenance.

[0032] The wiring assembly 1 includes: an insulating clamping plate 1 11 and an insulating clamping plate 2 12, wherein the bottom of the insulating clamping plate 2 12 is fixedly connected to the top of the insulating mounting plate 22. The top of the insulating clamping plate 2 12 is fixedly connected to the bottom end of the threaded column 17, and the outside of the threaded column 17 is slidably plugged into the inside of the insulating clamping plate 1 11. The outside of the threaded column 17 is threadedly connected to the inner ring of the screw sleeve 16, and the outside of the threaded column 17 is slidably plugged into the inner ring of the crimping spring 18 and the gasket 15, and the crimping spring 18 is located between the screw sleeve 16 and the gasket 15. The bottom of the insulating clamping plate 1 11 and the top of the insulating clamping plate 2 12 are both provided with an arc groove 14, and the groove wall of the arc groove 14 is fixedly connected to the outside of the conductive layer 13, and the conductive layer 13 is clamped to the outside of the wiring pin 31.

[0033] Furthermore, the connection pins 31 of the transformer body 3 and the connecting wires of the three-phase guide rail meter are inserted between the two conductive layers 13. Under the elastic force of the crimping spring 18, the clamp 1 11 tends to move toward the clamp 2 12, so that the two conductive layers 13 clamp the connection pins 31 and the connecting wires of the three-phase guide rail meter to prevent them from falling off. The connection pins 31 and the connecting wires of the three-phase guide rail meter are connected through the conductive layer 13. After all the wires are installed, the screw sleeve 16 is rotated to move the screw sleeve 16 toward the direction of the clamp 1 11, so that the two conductive layers 13 compress and lock the connection pins 31 and the connecting wires of the three-phase guide rail meter to fix the wires. In the above manner, the transformer body 3 is more convenient to connect when wiring, and there is no need to frequently turn the screws.

[0034] Working principle: During installation, insert the plug plate 33 at the bottom of the transformer body 3 into the slot 23 at the top of the insulating mounting plate 22. Before insertion, pull the pull ring 29 in the direction away from the U-shaped reaction plate 27. The pull ring 29 drives the positioning pin 25 to move through the connecting rod 28, so that the end of the positioning pin 25 is pulled out of the slot 23 to prevent the positioning pin 25 from hindering the plug plate 33 from being inserted into the slot 23. When the plug plate 33 is fully inserted into the slot 23, the socket 32 ​​is aligned with the circular through hole 24, and then release the pull ring 29, and the reset spring 26 pushes the positioning pin 25 is inserted into the jack 32, so that the plug board 33 and the insulating mounting plate 22 cannot be separated, and the transformer body 3 and the insulating mounting plate 22 cannot be separated. The three sets of transformer bodies 3 are installed on the insulating mounting plate 22 in the above manner, so that the three sets of transformer bodies 3 and the insulating mounting plate 22 form a whole, so that the three sets of transformer bodies 3 are arranged more compactly, saving the use space. At the same time, when installing and fixing, it is only necessary to fix the insulating mounting plate 22, and there is no need to fix each transformer body 3 one by one, so the installation is more convenient and quick. After the installation is completed, the connection pins 31 of the transformer body 3 and the connecting wires of the three-phase guide rail meter are inserted between the two conductive layers 13. Under the elastic force of the crimping spring 18, the clamping plate 1 11 tends to move toward the clamping plate 2 12, so that the two conductive layers 13 clamp the connection pins 31 and the connecting wires of the three-phase guide rail meter to prevent them from falling off. The connection pins 31 and the connecting wires of the three-phase guide rail meter are connected through the conductive layer 13. After all the wires are installed, the screw sleeve 16 is rotated to move the screw sleeve 16 toward the direction of the clamping plate 1 11, so that the two conductive layers 13 compress and lock the connection pins 31 and the connecting wires of the three-phase guide rail meter to fix the wires. In the above manner, the transformer body 3 is more convenient to connect when wiring, and there is no need to frequently turn the screws.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer combination structure for a three-phase rail meter, characterized in that: include: A combined mounting base (2) for mounting three groups of transformer bodies (3) together, wherein the three groups of transformer bodies (3) are mounted on the top of the combined mounting base (2), and a wiring assembly (1) is also provided on the top of the combined mounting base (2) for facilitating wiring of the transformer bodies (3); The combined mounting base (2) comprises: an insulating mounting plate (22), a circular through hole (24) is provided on one side of the insulating mounting plate (22), the hole wall of the circular through hole (24) is slidably sleeved on the outside of a positioning pin rod (25), one end of the positioning pin rod (25) is fixedly connected to one end of a connecting rod (28), the other end of the connecting rod (28) is fixedly connected to the outside of a pull ring (29), the outside of the connecting rod (28) is slidably inserted into the inside of one side of a U-shaped reaction plate (27), and the other side of the U-shaped reaction plate (27) is fixedly connected to the side of the insulating mounting plate (22) at the position of the circular through hole (24).

2. The mutual inductor assembly structure for a three-phase rail meter according to claim 1, characterized in that: Three groups of slots (23) are provided on the top of the insulating mounting plate (22), and the slots (23) are connected to the circular through holes (24).

3. The mutual inductor assembly structure for a three-phase rail meter according to claim 1, characterized in that: The outer portion of the connecting rod (28) is slidably inserted into the inner ring of the return spring (26), and the two ends of the return spring (26) are supported between the positioning pin rod (25) and the U-shaped reaction plate (27).

4. The mutual inductor assembly structure for a three-phase rail meter according to claim 1, characterized in that: Both sides of the insulating mounting plate (22) are fixedly connected to the outside of the wing plate (21), and the wing plate (21) is used to fix the insulating mounting plate (22).

5. The mutual inductor assembly structure for a three-phase rail meter according to claim 2, characterized in that: A connection pin (31) is provided on one side of the transformer body (3), the bottom of the transformer body (3) is fixedly connected to the top of the plug board (33), and the outside of the plug board (33) is slidably plugged into the slot wall of the slot (23).

6. The mutual inductor assembly structure for a three-phase rail meter according to claim 5, characterized in that: The side of the plug plate (33) is provided with an insertion hole (32), and the hole wall of the insertion hole (32) is slidably sleeved on the outside of the positioning pin rod (25).

7. The mutual inductor assembly structure for a three-phase rail meter according to claim 1, characterized in that: The wiring assembly (1) comprises: an insulating clamping plate 1 (11) and an insulating clamping plate 2 (12), wherein the bottom of the insulating clamping plate 2 (12) is fixedly connected to the top of the insulating mounting plate (22).

8. The mutual inductor assembly structure for a three-phase rail meter according to claim 7, characterized in that: The top of the second insulating clamping plate (12) is fixedly connected to the bottom end of the threaded column (17), and the outside of the threaded column (17) is slidably inserted into the inside of the first insulating clamping plate (11).

9. The mutual inductor assembly structure for a three-phase rail meter according to claim 8, characterized in that: The external thread of the threaded column (17) is connected to the inner ring of the threaded sleeve (16), and the external part of the threaded column (17) is slidably inserted into the inner ring of the compression spring (18) and the gasket (15), and the compression spring (18) is located between the threaded sleeve (16) and the gasket (15).

10. The mutual inductor assembly structure for a three-phase rail meter according to claim 9, characterized in that: The bottom of the insulating clamping plate 1 (11) and the top of the insulating clamping plate 2 (12) are both provided with an arc-shaped groove (14), the groove wall of the arc-shaped groove (14) is fixedly connected to the outside of the conductive layer (13), and the conductive layer (13) is clamped to the outside of the connection pin (31).

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