Low-power-consumption current transformer

Abstract

The invention relates to the technical field of current transformers, and discloses a low-power-consumption current transformer which comprises a mounting plate, a first transformer shell and a second transformer shell, the first transformer shell and the second transformer shell are symmetrically arranged from front to back, and the close sides of the first transformer shell and the second transformer shell abut against each other. The mounting plate is arranged on the lower side of the first mutual inductor shell and the lower side of the second mutual inductor shell, the lower side of the first mutual inductor shell is fixedly connected with the mounting plate, first connecting blocks are fixedly arranged on the two sides of the first mutual inductor shell correspondingly, and second connecting blocks are fixedly arranged on the two sides of the second mutual inductor shell correspondingly; the middle of each first connecting block is movably sleeved with a sliding rod, and one end of each sliding rod is fixedly connected with the corresponding second connecting block. According to the low-power-consumption current transformer, the device shell can be rapidly disassembled, the interior of the device can be conveniently maintained and repaired, tools are not needed, and time and labor are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of current transformers, in particular to a low-power consumption current transformer. Background Art

[0002] In modern power systems and industrial automation control, current transformers play a vital role. They can convert large currents into small current signals that can be used for measuring, protecting and controlling equipment. However, traditional current transformers need regular maintenance and repair during long-term operation due to aging, damage or performance degradation of internal components. However, the existing current transformer shell structure is usually more complicated. When performing internal maintenance, it is often necessary to use special tools such as screwdrivers and wrenches to remove the shell, which not only consumes a lot of time and manpower, but also in some emergency situations, the maintenance time may be delayed due to insufficient tool preparation or inconvenient operation, resulting in long-term equipment shutdown, affecting the normal power supply of the power system or the continuity of industrial production. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides a low-power current transformer with the advantage of being able to quickly disassemble the device casing, facilitating maintenance and repair of the inside of the device without the need for tools, thus saving time and effort. It solves the problem that the casing structure of the current transformer in the prior art is usually complicated, and when performing internal maintenance, it is often necessary to use special tools, such as screwdrivers, wrenches, etc., to disassemble the casing, which not only consumes a lot of time and manpower, but also in some emergency situations, the maintenance time may be delayed due to insufficient tool preparation or inconvenient operation, resulting in long-term equipment shutdown, affecting the normal power supply of the power system or the continuity of industrial production.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-power current transformer, comprising a mounting plate, a first transformer housing and a second transformer housing, the first transformer housing and the second transformer housing are symmetrically arranged from front to back, the first transformer housing and the second transformer housing are close to each other on one side, the mounting plate is arranged on the lower side of the first transformer housing and the second transformer housing, the lower side of the first transformer housing is fixedly connected to the mounting plate, both sides of the first transformer housing are fixedly provided with a first connecting block, both sides of the second transformer housing are fixedly provided with a second connecting block, and the two first transformer housings are fixedly provided with a second connecting block. A sliding rod is movably sleeved on the middle part of a connecting block, one end of the sliding rod is fixedly connected to the corresponding second connecting block, a sliding groove is provided on the upper surface of the rear side of the mounting plate, a transmission mechanism for driving the second transformer housing to move relative to the first transformer housing is provided inside the sliding groove, a groove is provided on the surface of the mounting plate and located on the front side of the first transformer housing, a wiring cover is clamped inside the groove, two wiring contacts are electrically connected to the front side of the lower end of the first transformer housing and at a position corresponding to the wiring cover, a splint is slidably provided inside the wiring cover, and limiting mechanisms for limiting the movement of the splint are provided at both ends of the splint.

[0007] Preferably, the transmission mechanism includes a rotating rod and a push rod, the rotating rod is rotatably arranged on the middle rear side of the slide slot, the push rod is fixedly sleeved on the rod wall of the rotating rod, a movable ring is fixedly arranged on the side of the second transformer housing away from the first transformer housing, one end of the push rod extends to the lower side of the movable ring, a round pin is fixedly arranged on the side of the push rod close to the movable ring, one end of the round pin passes through the movable ring, a gear is fixedly sleeved on the rod wall of the rotating rod, a lead screw is rotatably arranged inside the rear side of the slide slot, a slide plate is threadedly sleeved on the rod wall of the lead screw, a rack is fixedly arranged on the side of the slide plate close to the gear, and the rack is meshingly connected to the gear.

[0008] Preferably, the limiting mechanism includes a block and an insertion rod, both ends of the splint are provided with movable grooves on a side away from the wiring contacts, the block is slidably arranged inside the movable groove, both inner walls of the groove and the side close to the wiring contacts are provided with insertion holes, the insertion rod is fixedly arranged on a side of the block close to the insertion hole, one end of the insertion rod is plugged into the insertion hole, a fixed shell is fixedly arranged on the inner wall of the movable groove and on the side away from the insertion hole, a movable block is slidably arranged inside the fixed shell, a connecting rod is fixedly arranged on one side of the movable block, one end of the connecting rod extends to the outside of the fixed shell and is fixedly connected to the block, and a spring is fixedly arranged on the side of the movable block away from the connecting rod, and the other end of the spring is fixedly connected to the inner wall of the fixed shell.

[0009] Preferably, a limiting rod is arranged in parallel on one side of the screw rod, both ends of the limiting rod are fixedly connected to the inner wall of the corresponding slide groove, and one side of the slide plate is movably connected to the limiting rod.

[0010] Preferably, a retaining ring is fixedly sleeved on the upper end of the round pin.

[0011] Preferably, a rotating wheel is fixedly sleeved on one outer end of the screw rod.

[0012] Preferably, both inner walls of the groove are provided with limiting grooves, a limiting block is slidably arranged inside the limiting groove, one side of the limiting block is fixedly connected to the side wall of the splint, and a through hole is provided on the side wall of the limiting block at a position corresponding to the insertion rod.

[0013] Preferably, sealing gaskets are provided on the adjacent sides of the first transformer housing and the second transformer housing.

[0014] Preferably, both sides of the stopper are in conflict with the inner wall of the movable groove.

[0015] Preferably, a rubber pad is fixedly provided on one side of the clamping plate close to the wiring contact.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a low-power current transformer, which has the following beneficial effects:

[0018] 1. The low-power current transformer rotates the lead screw, which drives the slide plate to move, so that the rack moves, the rack drives the gear to rotate, the rotating rod rotates, the rotating rod drives the push rod to rotate, and the round pin rotates with the rotating rod as the axis, so that the round pin pushes the movable ring to the side away from the first transformer housing, so that the second transformer housing is separated from the first transformer housing, which is convenient for maintenance and repair of the internal components of the transformer.

[0019] 2. The low-power current transformer inserts the wire into the wiring cover and then slides the clamp to clamp the wire and the wiring contact. At this time, the spring force pushes the movable block to move, so that the connecting rod pushes the block, and then the block drives the insertion rod to be inserted into the socket, thus completing the limit of the clamp, and realizing efficient and stable wiring work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a low-power current transformer proposed by the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0022] Figure 3 for Figure 2 A magnified view of the structure of part A;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure viewed from above;

[0024] Figure 5 for Figure 4 A magnified view of the structure of part B.

[0025] In the figure: 1 mounting plate, 2 first connecting block, 3 second connecting block, 4 second transformer housing, 5 first transformer housing, 6 sliding rod, 7 wiring cover, 8 sliding plate, 9 rack, 10 gear, 11 rotating rod, 12 push rod, 13 round pin, 14 movable ring, 15 screw rod, 16 limit rod, 17 clamping plate, 18 rubber pad, 19 wiring contact, 20 stopper, 21 plug rod, 22 fixed shell, 23 movable block, 24 spring, 25 connecting rod, 26 limit block. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] See also Figure 1-5 A low-power current transformer comprises a mounting plate 1, a first transformer housing 5 and a second transformer housing 4, wherein the first transformer housing 5 and the second transformer housing 4 are symmetrically arranged from front to back, the first transformer housing 5 and the second transformer housing 4 are close to each other on one side, and a sealing gasket is arranged on the first transformer housing 5 and the second transformer housing 4 on the other side to improve the sealing between the first transformer housing 5 and the second transformer housing 4, and the mounting plate 1 is arranged on the lower side of the first transformer housing 5 and the second transformer housing 4, and the lower side of the first transformer housing 5 is in contact with the mounting plate 1 is fixedly connected, first connecting blocks 2 are fixedly arranged on both sides of the first transformer housing 5, second connecting blocks 3 are fixedly arranged on both sides of the second transformer housing 4, sliding rods 6 are movably sleeved in the middle of the two first connecting blocks 2, one end of the sliding rod 6 is fixedly connected to the corresponding second connecting block 3, a sliding groove is provided on the upper surface of the rear side of the mounting plate 1, a groove is provided on the surface of the mounting plate 1 and located on the front side of the first transformer housing 5, a wiring cover 7 is clamped inside the groove, and two wiring contacts 19 are electrically connected to the front side of the lower end of the first transformer housing 5 and the position corresponding to the wiring cover 7.

[0029] Embodiment 2

[0030] See also Figure 1-5 A transmission mechanism for driving the second transformer housing 4 to move relative to the first transformer housing 5 is arranged inside the slideway, and the transmission mechanism includes a rotating rod 11 and a push rod 12. The rotating rod 11 is rotatably arranged at the rear side of the middle part of the slideway, and the push rod 12 is fixedly sleeved on the rod wall of the rotating rod 11. A movable ring 14 is fixedly arranged on the side of the second transformer housing 4 away from the first transformer housing 5, and one end of the push rod 12 extends to the lower side of the movable ring 14. A round pin 13 is fixedly arranged on the side of the push rod 12 close to the movable ring 14, and one end of the round pin 13 passes through the movable ring 14. The upper end of the round pin 13 is fixedly sleeved with a retaining ring, and the second transformer housing 4 is fixedly sleeved with a movable ring 14. To prevent the round pin 13 from slipping out of the movable ring 14, the rod wall of the rotating rod 11 is fixedly sleeved with a gear 10, and a screw rod 15 is rotatably arranged inside the rear side of the slide groove. A slide plate 8 is threadedly sleeved on the rod wall of the screw rod 15, and a rack 9 is fixedly arranged on the side of the slide plate 8 close to the gear 10. The rack 9 is meshed with the gear 10. A limit rod 16 is arranged parallel to one side of the screw rod 15, and both ends of the limit rod 16 are fixedly connected to the inner wall of the corresponding slide groove. One side of the slide plate 8 is movably sleeved with the limit rod 16, so that the slide plate 8 can slide stably, and a rotating wheel is fixedly sleeved on the outer end of the screw rod 15 to facilitate the rotation of the screw rod.

[0031] Embodiment 3

[0032] See also Figure 1-5 A clamping plate 17 is slidably provided inside the wiring cover 7, and limiting mechanisms for limiting the movement of the clamping plate 17 are provided at both ends of the clamping plate 17. The limiting mechanisms include a stopper 20 and a plug rod 21. Both ends of the clamping plate 17 on the side away from the wiring contact 19 are provided with movable grooves, and the stopper 20 is slidably provided inside the movable groove. The inner walls of both sides of the groove and the side close to the wiring contact 19 are provided with plug holes, and the plug rod 21 is fixedly provided on the side of the stopper 20 close to the plug hole. One end of the plug rod 21 is plugged into the plug hole, and a fixed shell 22 is fixedly provided on the inner wall of the movable groove and on the side away from the plug hole. A movable block 23 is slidably provided inside the fixed shell 22, and a connecting rod 25 is fixedly provided on one side of the movable block 23, and one end of the connecting rod 25 extends to the fixed shell The outer side of 22 is fixedly connected to the stopper 20, and a spring 24 is fixedly provided on the side of the movable block 23 away from the connecting rod 25, and the other end of the spring 24 is fixedly connected to the inner wall of the fixed shell 22. Both sides of the stopper 20 are in conflict with the inner wall of the movable groove, so that the stopper 20 cannot rotate, that is, it can slide stably. Limiting grooves are provided on the inner walls of the two sides of the groove, and a limiting block 26 is provided for sliding inside the limiting groove. One side of the limiting block 26 is fixedly connected to the side wall of the clamping plate 17, and a through hole is provided on the side wall of the limiting block 26 and at a position corresponding to the insertion rod 21, so that the clamping plate 17 can slide stably in the groove, and a rubber pad 18 is fixedly provided on the side of the clamping plate 17 close to the wiring contact 19 to improve the stability of the clamping plate 17 on the wire clamping.

[0033] In summary, for the low-power current transformer, when it is necessary to maintain and repair the internal components of the transformer, the screw rod 15 is rotated, and the screw rod 15 drives the slide plate 8 to move, so that the rack 9 moves, and the rack 9 drives the gear 10 to rotate, so that the rotating rod 11 is rotated, and the rotating rod 11 drives the push rod 12 to rotate, so that the round pin 13 rotates with the rotating rod 11 as the axis, and then the round pin 13 pushes the movable ring 14 to the side away from the first transformer housing 5, so that the second transformer housing 5 is separated from the first transformer housing 4, which is convenient for maintenance and repair of the internal components of the transformer. When wiring, the wire is inserted into the interior of the wiring cover 7, and then the clamping plate 17 is slid so that the clamping plate 17 clamps the wire and the wiring contact 19. At this time, the elastic force of the spring 24 pushes the movable block 23 to move, so that the connecting rod 25 pushes the block 20, and then the block 20 drives the plug 21 to be inserted into the jack, so that the limit of the clamping plate 17 is completed, and efficient and stable wiring work is achieved.

[0034] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[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 low power consumption current transformer, comprising a mounting plate (1), a first transformer housing (5) and a second transformer housing (4), characterized in that: The first transformer housing (5) and the second transformer housing (4) are symmetrically arranged from front to back, and the first transformer housing (5) and the second transformer housing (4) are close to each other on one side and collide with each other. The mounting plate (1) is arranged on the lower side of the first transformer housing (5) and the second transformer housing (4), and the lower side of the first transformer housing (5) is fixedly connected to the mounting plate (1). First connecting blocks (2) are fixedly arranged on both sides of the first transformer housing (5), and second connecting blocks (3) are fixedly arranged on both sides of the second transformer housing (4). A sliding rod (6) is movably sleeved on the middle part of the two first connecting blocks (2), and one end of the sliding rod (6) is connected to the corresponding The second connecting block (3) is fixedly connected to the mounting plate (1), a slide groove is provided on the upper surface of the rear side of the mounting plate (1), and a transmission mechanism for driving the second transformer housing (4) to move relative to the first transformer housing (5) is arranged inside the slide groove, a groove is provided on the surface of the mounting plate (1) and located on the front side of the first transformer housing (5), a wiring cover (7) is clamped inside the groove, two wiring contacts (19) are electrically connected at the front side of the lower end of the first transformer housing (5) and at a position corresponding to the wiring cover (7), a clamping plate (17) is slidably arranged inside the wiring cover (7), and limit mechanisms for limiting the movement of the clamping plate (17) are arranged at both ends of the clamping plate (17).

2. A low power consumption current transformer according to claim 1, characterized in that: The transmission mechanism comprises a rotating rod (11) and a push rod (12), wherein the rotating rod (11) is rotatably arranged at the rear side of the middle part of the slide groove, and the push rod (12) is fixedly sleeved on the rod wall of the rotating rod (11); a movable ring (14) is fixedly arranged on the side of the second transformer housing (4) away from the first transformer housing (5); one end of the push rod (12) extends to the lower side of the movable ring (14); a round pin (13) is fixedly arranged on the side of the push rod (12) close to the movable ring (14); one end of the round pin (13) passes through the movable ring (14); a gear (10) is fixedly sleeved on the rod wall of the rotating rod (11); a lead screw (15) is rotatably arranged inside the rear side of the slide groove; a slide plate (8) is threadedly sleeved on the rod wall of the lead screw (15); a rack (9) is fixedly arranged on the side of the slide plate (8) close to the gear (10); and the rack (9) is meshingly connected with the gear (10).

3. A low power consumption current transformer according to claim 1, characterized in that: The limiting mechanism comprises a stopper (20) and an insertion rod (21); both ends of the side of the clamping plate (17) away from the wiring contact (19) are provided with movable grooves; the stopper (20) is slidably arranged inside the movable groove; both inner walls of the groove and the side close to the wiring contact (19) are provided with insertion holes; the insertion rod (21) is fixedly arranged on the side of the stopper (20) close to the insertion hole; one end of the insertion rod (21) is plugged into the insertion hole; the inner wall of the movable groove and the side close to the insertion hole are provided with a plug hole; A fixed shell (22) is fixedly provided on one side of the fixed shell (22), a movable block (23) is slidably provided inside the fixed shell (22), a connecting rod (25) is fixedly provided on one side of the movable block (23), one end of the connecting rod (25) extends to the outside of the fixed shell (22) and is fixedly connected to the stopper (20), and a spring (24) is fixedly provided on the side of the movable block (23) away from the connecting rod (25), and the other end of the spring (24) is fixedly connected to the inner wall of the fixed shell (22).

4. A low power consumption current transformer according to claim 2, characterized in that: A limiting rod (16) is arranged parallel to one side of the screw rod (15), both ends of the limiting rod (16) are fixedly connected to the inner wall of the corresponding slide groove, and one side of the slide plate (8) is movably sleeved with the limiting rod (16).

5. A low power consumption current transformer according to claim 2, characterized in that: The upper end of the round pin (13) is fixedly sleeved with a retaining ring.

6. A low power consumption current transformer according to claim 2, characterized in that: A rotating wheel is fixedly sleeved on one outer end of the screw rod (15).

7. A low power consumption current transformer according to claim 3, characterized in that: Limiting grooves are provided on the inner walls on both sides of the groove, and a limiting block (26) is slidably arranged inside the limiting groove. One side of the limiting block (26) is fixedly connected to the side wall of the clamping plate (17), and a through hole is provided on the side wall of the limiting block (26) at a position corresponding to the insertion rod (21).

8. A low power consumption current transformer according to claim 1, characterized in that: A sealing gasket is provided on the adjacent side of the first transformer housing (5) and the second transformer housing (4).

9. A low power consumption current transformer according to claim 3, characterized in that: Both sides of the stopper (20) are in contact with the inner wall of the movable groove.

10. A low power consumption current transformer according to claim 1, characterized in that: A rubber pad (18) is fixedly arranged on one side of the clamping plate (17) close to the wiring contact (19).

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