Three-phase integrated current transformer structure

Abstract

The utility model relates to the technical field of current transformers, in particular to a three-phase integrated current transformer structure. The current transformer comprises a current transformer body, a supporting ring, a rotating ring, a hollow supporting sleeve, a sliding ring and a plurality of abutting assemblies. The multiple sets of abutting assemblies are arranged in the sliding through holes in a sliding mode respectively, and the sliding ring is provided with a plurality of sliding grooves for the abutting assemblies to slide and driving the abutting assemblies to move outwards or inwards when the sliding ring rotates. By arranging the supporting ring, the rotating ring, the sliding ring, the hollow supporting sleeve and the abutting assembly, when the current transformer is installed, the hollow supporting sleeve penetrates through the through hole of the installation plate, the supporting ring abuts against the installation plate, the current transformer is pressed to rotate the supporting ring, the sliding ring is driven to rotate, and the abutting assembly moves outwards; the abutting assembly abuts against the through hole of the mounting plate, connection between the current transformer and the mounting part is tighter, the current transformer is prevented from shaking, and potential safety hazards are reduced.

Description

Technical Field

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

[0002] The current transformer is an instrument that converts the primary side large current into the secondary side small current for measurement based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. Its primary side winding has a small number of turns and is connected in series in the circuit of the current to be measured. The secondary side winding has a relatively large number of turns and is connected in series in the measuring instrument and protection circuit.

[0003] A Chinese patent with publication number CN114694935A discloses a main structure of a three-phase integrated current transformer. The part of the support part extending outside the auxiliary body can fit with the surface of the mounting part on the gas-insulated switchgear, ensuring the connection stability between the insulator and the mounting part on the gas-insulated switchgear; the two wires electrically connected by the first conductive copper plate can be conducted from two adjacent sides of the main structure, which can reduce the installation space requirements of the three-phase integrated current transformer in the length direction and is suitable for more installation environments.

[0004] However, the above patent has the following shortcomings:

[0005] When installing the current transformer, the supporting part is in contact with the surface of the mounting part, that is, the outlet bushing needs to pass through the mounting part. After installation, the outlet bushing is easy to shake in the through hole, which can easily cause the current transformer to vibrate and cause the connection between the wire and the conductive copper plate to fall off, posing a safety hazard. Utility Model Content

[0006] The utility model aims to solve the problems existing in the background technology and proposes a three-phase integrated current transformer structure which makes the connection between the current transformer and the mounting part tighter, prevents the current transformer from shaking, and reduces safety hazards.

[0007] The technical solution of the utility model is a three-phase integrated current transformer structure, comprising a current transformer body, a support ring, a rotating ring, a hollow support sleeve, a sliding ring and multiple groups of abutment components; the support ring is rotatably arranged in the middle of the current transformer body, the rotating ring is arranged on the support ring and is rotatably connected to the current transformer body, the hollow support sleeve is sleeved on the outside of the current transformer body, the sliding ring is arranged on the rotating ring, a plurality of sliding through holes are arranged on the hollow support sleeve, and the multiple groups of abutment components are respectively slidably arranged in each sliding through hole, and a plurality of sliding grooves are arranged on the sliding ring for the abutment components to slide and drive the abutment components to move outward or inward when the sliding ring rotates.

[0008] Preferably, the current transformer body includes an upper insulator, a lower insulator and three conductive copper rods. The lower insulator is arranged on the upper insulator. The upper insulator and the lower insulator are connected by three "7"-shaped connecting holes. The three coils are respectively arranged in the three "7"-shaped connecting holes. The three conductive copper rods are arranged in the three "7"-shaped connecting holes and respectively pass through the three coils. The support ring is rotatably arranged between the upper insulator and the lower insulator. The rotating ring is rotatably connected to the lower insulator, and the hollow support sleeve is sleeved on the outside of the lower insulator.

[0009] Preferably, it also includes an incoming line bushing and an outgoing line bushing, the incoming line bushing is horizontally arranged on the upper insulator, the outgoing line bushing is vertically arranged on the lower insulator, one end of the conductive copper rod is located in the incoming line bushing, and the other end of the conductive copper rod is located in the outgoing line bushing.

[0010] Preferably, a plurality of anti-slip bumps are provided on the side surface of the support ring.

[0011] Preferably, a mounting hole is provided on the support ring, and an internal thread is provided in the mounting hole.

[0012] Preferably, the abutment assembly includes a slider, a sliding rod and an abutment block, the slider is slidably arranged in the sliding groove, the sliding rod is arranged on the slider and the sliding rod is slidably arranged in the sliding through hole, the abutment block is arranged on the sliding rod, and the abutment block is arranged in an arc shape.

[0013] Preferably, it further comprises an anti-skid pad, which is arranged on the abutting block.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. The utility model provides a support ring, a rotating ring, a sliding ring, a hollow support sleeve and an abutment assembly. When installing the current transformer, the hollow support sleeve is passed through the through hole of the mounting plate, the support ring abuts against the mounting plate, the current transformer is pressed and the support ring is rotated, the sliding ring is driven to rotate and move the abutment assembly outward, so that the abutment assembly abuts against the through hole of the mounting plate, so that the connection between the current transformer and the mounting part is tighter, the current transformer is prevented from shaking, and safety hazards are reduced.

[0016] 2. The utility model provides anti-skid protrusions to facilitate users to rotate the support ring; provides anti-skid pads to prevent the current transformer from sliding in the through hole of the mounting plate, making the connection between the current transformer and the mounting part tighter; and provides mounting holes to further strengthen the connection between the current transformer and the mounting part, preventing the current transformer from moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A side cross-sectional view of

[0019] Figure 3 It is a schematic diagram of the structure of the sliding ring in the embodiment of the utility model.

[0020] Figure numerals: 1. current transformer body; 101. upper insulator; 102. lower insulator; 103. conductive copper rod; 2. support ring; 201. anti-skid protrusion; 202. mounting hole; 3. rotating ring; 4. hollow support sleeve; 401. sliding through hole; 5. sliding ring; 501. sliding groove; 6. abutment assembly; 601. slider; 602. sliding rod; 603. abutment block; 7. incoming bushing; 8. outgoing bushing; 9. anti-skid pad. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] like Figure 1-Figure 3 As shown, a three-phase integrated current transformer structure proposed in this embodiment includes a current transformer body 1, a support ring 2, a rotating ring 3, a hollow support sleeve 4, a sliding ring 5 and multiple groups of abutment components 6; the support ring 2 is rotatably arranged in the middle of the current transformer body 1, the rotating ring 3 is arranged on the support ring 2 and the rotating ring 3 is rotatably connected to the current transformer body 1, the hollow support sleeve 4 is sleeved on the outside of the current transformer body 1, the sliding ring 5 is arranged on the rotating ring 3, and a plurality of sliding through holes 401 are arranged on the hollow support sleeve 4. Multiple groups of abutment components 6 are respectively slidably arranged in each sliding through hole 401, and a plurality of sliding grooves 501 are arranged on the sliding ring 5 for the abutment components 6 to slide and drive the abutment components 6 to move outward or inward when the sliding ring 5 rotates.

[0023] When using the three-phase current transformer, the current transformer body 1 is passed through the through hole of the mounting portion, the support ring 2 is abutted against the mounting portion, the current transformer body 1 is pressed with one hand, and the support ring 2 is rotated with the other hand, the support ring 2 drives the rotating ring 3 to rotate, and the rotating ring 3 drives the sliding ring 5 to rotate, the sliding groove 501 is eccentrically distributed with the central axis of the sliding ring 5, the rotation of the sliding ring 5 and the restriction of the abutment component 6 by the sliding through hole 401 drive the abutment component 6 to slide in the sliding groove 501 while moving toward the outside of the hollow support sleeve 4 until the abutment component 6 abuts against the inner wall of the through hole of the mounting portion, thereby making the connection between the current transformer and the mounting portion tighter, preventing the current transformer from shaking, and reducing safety hazards.

[0024] Embodiment 2

[0025] like Figure 1 and Figure 2As shown, a three-phase integrated current transformer structure proposed in this embodiment, compared with the first embodiment, in this embodiment, the current transformer body 1 includes an upper insulator 101, a lower insulator 102 and three conductive copper rods 103, the lower insulator 102 is arranged on the upper insulator 101, the upper insulator 101 and the lower insulator 102 are connected by three "7"-shaped connecting holes, the three coils are respectively arranged in the three "7"-shaped connecting holes, the three conductive copper rods 103 are arranged in the three "7"-shaped connecting holes and respectively pass through the three coils, the support ring 2 is rotatably arranged between the upper insulator 101 and the lower insulator 102, the rotating ring 3 is rotatably connected to the lower insulator 102, and the hollow support sleeve 4 is sleeved on the outside of the lower insulator 102. The three-phase integrated current transformer structure also includes an incoming bushing 7 and an outgoing bushing 8. The incoming bushing 7 is horizontally arranged on the upper insulator 101, and the outgoing bushing 8 is vertically arranged on the lower insulator 102. One end of the conductive copper rod 103 is located in the incoming bushing 7, and the other end of the conductive copper rod 103 is located in the outgoing bushing 8.

[0026] In this embodiment, by providing a "7"-shaped connecting hole, the two wires matched with the two ends of the conductive copper rod 103 can be respectively close to the two adjacent side surfaces of the current transformer body 1, thereby reducing the installation space requirement along the length direction of the three-phase integrated current transformer. By providing an inlet bushing 7 and an outlet bushing 8, the two ends of the conductive copper rod 103 are protected and supported.

[0027] Embodiment 3

[0028] like Figure 1-Figure 3 As shown, a three-phase integrated current transformer structure proposed in this embodiment, compared with the first embodiment, in this embodiment, a plurality of anti-skid protrusions 201 are arranged on the side of the support ring 2. A mounting hole 202 is arranged on the support ring 2, and an internal thread is arranged in the mounting hole 202. The abutment assembly 6 includes a slider 601, a sliding rod 602 and an abutment block 603, the slider 601 is slidably arranged in the sliding groove 501, the sliding rod 602 is arranged on the slider 601 and the sliding rod 602 is slidably arranged in the sliding through hole 401, the abutment block 603 is arranged on the sliding rod 602, and the abutment block 603 is arranged in an arc shape. The three-phase integrated current transformer structure also includes an anti-skid pad 9, and the anti-skid pad 9 is arranged on the abutment block 603.

[0029] In this embodiment, the anti-skid protrusion 201 is provided to facilitate the user to rotate the support ring 2. The installation hole 202 is provided to enhance the connection between the current transformer and the installation part, and further prevent the current transformer from moving. When the sliding ring 5 is rotated, the slider 601 slides in the sliding groove 501, driving the sliding rod 602 to slide in the sliding through hole 401, thereby driving the abutment block 603 to move toward the outside of the hollow support sleeve 4. The anti-skid pad 9 is provided to further enhance the connection between the abutment component 6 and the through hole of the installation part to prevent the current transformer from sliding.

[0030] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A three-phase integrated current transformer structure, characterized in that: It comprises a current transformer body (1), a support ring (2), a rotating ring (3), a hollow support sleeve (4), a sliding ring (5) and a plurality of abutment components (6); A support ring (2) is rotatably arranged in the middle of a current transformer body (1); a rotating ring (3) is arranged on the support ring (2) and is rotatably connected to the current transformer body (1); a hollow support sleeve (4) is sleeved on the outside of the current transformer body (1); a sliding ring (5) is arranged on the rotating ring (3); a plurality of sliding through holes (401) are arranged on the hollow support sleeve (4); a plurality of groups of abutment components (6) are respectively slidably arranged in each sliding through hole (401); and a plurality of sliding grooves (501) are arranged on the sliding ring (5) for the abutment components (6) to slide and for driving the abutment components (6) to move outward or inward when the sliding ring (5) rotates.

2. A three-phase current transformer structure according to claim 1, characterized in that: The current transformer body (1) comprises an upper insulator (101), a lower insulator (102) and three conductive copper rods (103); the lower insulator (102) is arranged on the upper insulator (101); the upper insulator (101) and the lower insulator (102) are connected by three "7"-shaped connecting holes; three coils are respectively arranged in the three "7"-shaped connecting holes; the three conductive copper rods (103) are respectively arranged in the three "7"-shaped connecting holes and pass through the three coils; a support ring (2) is rotatably arranged between the upper insulator (101) and the lower insulator (102); a rotating ring (3) is rotatably connected to the lower insulator (102); and a hollow support sleeve (4) is sleeved on the outer side of the lower insulator (102).

3. A three-phase current transformer structure according to claim 2, characterized in that: It also includes an incoming line bushing (7) and an outgoing line bushing (8), wherein the incoming line bushing (7) is horizontally arranged on the upper insulator (101), and the outgoing line bushing (8) is vertically arranged on the lower insulator (102), one end of the conductive copper rod (103) is located in the incoming line bushing (7), and the other end of the conductive copper rod (103) is located in the outgoing line bushing (8).

4. A three-phase current transformer structure according to claim 1, characterized in that: A plurality of anti-slip bumps (201) are arranged on the side surface of the support ring (2).

5. The three-phase integrated current transformer structure according to claim 1, characterized in that: The support ring (2) is provided with a mounting hole (202), and an internal thread is provided in the mounting hole (202).

6. A three-phase integrated current transformer structure according to claim 1, characterized in that: The abutment assembly (6) comprises a slider (601), a sliding rod (602) and an abutment block (603); the slider (601) is slidably arranged in the sliding groove (501); the sliding rod (602) is arranged on the slider (601) and the sliding rod (602) is slidably arranged in the sliding through hole (401); the abutment block (603) is arranged on the sliding rod (602), and the abutment block (603) is arranged in an arc shape.

7. A three-phase current transformer structure according to claim 6, characterized in that: It also includes an anti-skid pad (9), which is arranged on the abutment block (603).

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