Fixed bus type current transformer

Abstract

The utility model relates to the technical field of current transformer, the utility model provides fixed busbar type current transformer, it includes base, the outer wall left side of casing is connected with the pivot, the outer wall middle part of pivot is fixedly connected with the right thread sleeve, the outer wall bottom of pivot is fixedly connected with the left thread sleeve, the outer wall of two right thread sleeves and left thread sleeves all are threadedly connected with the moving block, the outer wall of two moving blocks all are slidably connected with the fixed column between the adjacent, the outer wall of two fixed columns all are fixedly connected with the base, the top of two bases all are fixedly connected with the connecting column no. Through the above technical scheme, when the moving block on the left thread sleeve moves forward, the moving block on the right thread sleeve moves back, then the connecting column no. And the connecting column no. On the fixed column on two moving blocks are connected through the connecting plate on the rotating disc, thereby driving the rotating disc to rotate a certain angle, then the mutual inductor is adjusted in angle.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically to a fixed busbar type current transformer. Background Technology

[0002] Current transformers are electrical devices that operate based on the principle of electromagnetic induction. Their core function is to proportionally transform the large primary current in a power system into a smaller, more easily measurable, protectable, and controllable secondary current, thereby enabling accurate monitoring of current parameters in the circuit and ensuring the safe and stable operation of the power system. Fixed busbar current transformers are a special type of current transformer, specifically designed for use with busbars. Busbars are conductors in a power system that collect and distribute electrical energy, and are typically made of copper or aluminum.

[0003] However, traditional fixed busbar current transformers have stringent installation requirements. Their installation necessitates the presence of robust partitions within the high-voltage switchgear. Furthermore, the transformers themselves are mostly fixed, preventing angle adjustment. In terms of insulation, early fixed busbar current transformers often used ordinary insulating materials like plastic shells, which have poor aging resistance. While current market innovations in transformer insulation structures employ multi-layer composite insulation, increasing insulation spacing and creepage distance, and rationally designing the shape and size of insulating components to avoid electric field concentration and prevent partial discharge, these innovations still require disassembly and re-fixing for angle adjustments in special applications, which is time-consuming. The stringent and complex installation requirements further impact efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model proposes a fixed busbar type current transformer, which solves the problem in related technologies that the transformer needs to be disassembled and fixed again in special situations if the angle needs to be changed, and the installation method is demanding and complicated.

[0005] According to one aspect, at least one embodiment of the present invention provides a fixed busbar type current transformer, including a housing, a rotating shaft rotatably connected to the left side of the outer wall of the housing, a positive threaded sleeve fixedly connected to the middle of the outer wall of the rotating shaft, a negative threaded sleeve fixedly connected to the bottom of the outer wall of the rotating shaft, movable blocks threadedly connected to the outer walls of both positive and negative threaded sleeves, fixed columns slidably connected between adjacent outer walls of both movable blocks, bases fixedly connected to the outer walls of both fixed columns, connecting columns fixedly connected to the tops of both bases, a support plate fixedly connected to the end of the rotating shaft, a transmission assembly fixedly connected to the tops of both connecting columns, and a fixing structure fixedly connected to the top of the outer wall of the housing, the fixing structure being used to fix the housing to other devices.

[0006] For example, in at least one embodiment of the fixed busbar current transformer provided by this utility model, the fixed structure includes a housing, the outer walls of a plurality of housings are fixedly connected to the housing, the outer walls of the housings are provided with ball grooves, the inner walls of the housings are provided with threaded grooves near the edge, the outer walls of the plurality of threaded grooves are threaded with screws, the bottoms of the plurality of screws are fixedly connected with abutments, the outer walls of the plurality of abutments are fixedly connected with springs, the outer walls of the plurality of abutments are fixedly connected with rubber sleeves, and the tops of the plurality of rubber sleeves are fixedly connected with ball bearings.

[0007] According to another aspect, at least one embodiment of the present invention also provides a fixed busbar type current transformer, comprising: the transmission assembly includes connecting plates, the left side of the outer walls of the two connecting plates are fixedly connected to a first connecting column, and the right side of the outer walls of the two connecting plates are fixedly connected to a second connecting column.

[0008] For example, in at least one embodiment of the present invention, the fixed busbar current transformer further includes: a turntable fixedly connected to the ends of both connecting posts 2, and a transformer fixedly connected to the inner wall of the turntable.

[0009] According to another aspect, at least one embodiment of the present invention also provides a fixed busbar type current transformer, comprising: a track is provided on the inner wall of the transformer, and a fixing sleeve is fixedly connected to the inner wall of a plurality of tracks.

[0010] For example, in at least one embodiment of the present invention, the fixed busbar type current transformer further includes: a rotating plate rotatably connected to the outer wall of each of the plurality of fixed sleeves, and an electromagnetic coil fixedly connected to the outer wall of the transformer.

[0011] According to another aspect, at least one embodiment of the present invention also provides a fixed busbar type current transformer, comprising: a protective shell fixedly connected to the top of the outer wall of the transformer, and a ball bearing rotatably connected to the inner wall of the shell.

[0012] For example, in at least one embodiment of the fixed busbar current transformer provided by this utility model, it further includes: a connector one fixedly connected to the inner wall of the protective shell, and a connector two fixedly connected to the inner wall of the protective shell.

[0013] According to another aspect, at least one embodiment of the present invention also provides a fixed busbar type current transformer, comprising: a ventilation hole is provided on the top front side of the housing, and a buffer pad is fixedly connected to the top rear side of the housing.

[0014] For example, in at least one embodiment of the fixed busbar current transformer provided by this utility model, a second handle is fixedly connected to the top of the housing, and a first handle is fixedly connected to the top of the rotating shaft.

[0015] The beneficial effects of the embodiments of this utility model are as follows:

[0016] In this invention, the rotating shaft drives the moving blocks on the reverse threaded sleeve and the moving blocks on the positive threaded sleeve to move. Since the threads on the surfaces of the reverse threaded sleeve and the positive threaded sleeve are different, the moving blocks on the reverse threaded sleeve and the moving blocks on the positive threaded sleeve move in opposite directions. Therefore, when the moving block on the reverse threaded sleeve moves forward, the moving block on the positive threaded sleeve moves backward. Then, the connecting post one on the fixed post of the two moving blocks is connected to the connecting post two on the turntable through a connecting plate, thereby driving the turntable to rotate at a certain angle, and then the current transformer is adjusted in angle.

[0017] By placing the outer casing of the housing into the device to be connected, and then inserting the screw into the housing, the screw is fixed by rotating it using the abutment on the inner wall of the housing and the thread on the surface of the screw. When it is rotated to the bottom, the abutment at the bottom of the screw will first touch the bottom of the inner wall of the housing. Because the gap between the inner wall of the housing and the abutment is too small, the ball bearing is tightly attached to the inner wall of the housing. Then, after reaching the bottom, the ball bearing extends out through the ball groove and locks into the connecting device, thus achieving fixation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a perspective view of the front side of the fixed busbar current transformer proposed in this utility model.

[0020] Figure 2 This is a left perspective view of the fixed busbar current transformer proposed in this utility model;

[0021] Figure 3 Top view of the current transformer of the fixed busbar type proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the rotating shaft structure of the fixed busbar current transformer proposed in this utility model;

[0023] Figure 5 This is an exploded view of the housing structure of the fixed busbar current transformer proposed in this utility model;

[0024] Figure 6 This is a structural diagram of the internal structure of the fixed busbar current transformer proposed in this utility model;

[0025] In the diagram: 1. Shell; 2. Fixing structure; 201. Outer shell; 202. Ball groove; 203. Thread groove; 204. Screw; 205. Spring; 206. Rubber sleeve; 207. Ball bearing 1; 208. Abutment; 3. Rotating shaft; 4. Positive thread sleeve; 5. Negative thread sleeve; 6. Moving block; 7. Fixed column; 8. Base; 9. Connecting column 1; 10. Support plate; 11. Connecting plate; 12. Connecting column 2; 13. Turntable; 14. Current transformer; 15. Track; 16. Fixed sleeve; 17. Rotating plate; 18. Electromagnetic coil; 19. Protective shell; 20. Connector 1; 21. Connector 2; 22. Vent; 23. Buffer pad; 24. Handle 1; 25. Handle 2; 26. Ball bearing 2. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0027] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 2-4 As shown, a fixed busbar current transformer according to an embodiment of the present invention is shown, including a housing 1. A rotating shaft 3 is provided on the left side of the outer wall of the housing 1 via a rotatable connection. A positive threaded sleeve 4 is fixedly connected to the middle of the outer wall of the rotating shaft 3, and a negative threaded sleeve 5 is fixedly connected to the bottom of the outer wall of the rotating shaft 3. The outer walls of the two positive threaded sleeves 4 and the negative threaded sleeve 5 are each connected to a moving block 6 via a threaded connection. The outer walls of the two moving blocks 6 are respectively provided with a fixed post 7 via a sliding connection. The outer walls of the two fixed posts 7 are each firmly fixedly connected to a base 8, and the top of the two bases 8 are each fixedly connected to a connecting post 9. A support plate 10 is fixedly connected to the end of the rotating shaft 3 to enhance the stability of the overall structure. The top of the two connecting posts 9 are each fixedly connected to a transmission component. A fixing structure 2 is fixedly connected to the top of the outer wall of the housing 1. The fixing structure 2 is used to fix the housing 1 to other devices.

[0033] In some examples, a rotating shaft 3 is rotatably connected to the left side of the outer wall of housing 1. A positive threaded sleeve 4 is fixed in the middle of the outer wall of the rotating shaft 3, and a negative threaded sleeve 5 is fixed at the bottom. Both are threadedly connected to a moving block 6. Since the threads of the positive threaded sleeve 4 and the negative threaded sleeve 5 are different, when they rotate, the moving blocks 6 on them move in opposite directions. A fixed column 7 is slidably connected between adjacent moving blocks 6. A base 8 is fixed to the outer wall of the fixed column 7. A connecting column 9 is fixed to the top of the base 8. Then, a support plate 10 is connected to the end of the rotating shaft 3 to enhance structural stability. A transmission assembly is fixed to the top of the two connecting columns 9. The force when the moving blocks 6 move is transmitted through the transmission assembly to make the current transformer 14 rotate. A fixing structure 2 is fixed to the top of the outer wall of housing 1 to fix housing 1 to other devices.

[0034] like Figures 4-5As shown, this invention illustrates a fixed busbar current transformer according to one embodiment. The fixed structure 2 specifically includes a housing 201. The outer wall of each housing 201 is fixed to the four corners of the surface of the housing 1 by a robust connection. Two ball grooves 202 are formed on the outer wall of each housing 201, providing a path for the ball bearings 207 to extend. A threaded groove 203 is formed on the inner wall of each housing 201 near the edge. The outer wall of each threaded groove 203 is connected to a... Each screw 204 is connected to ensure a firm and adjustable connection. A butt 208 is fixedly connected to the bottom of each screw 204. Two springs 205 are fixedly connected to the outer wall of each butt 208. Two rubber sleeves 206 are also fixedly connected to the outer wall of each butt 208. These rubber sleeves 206 not only provide protection but also increase friction. A ball bearing 207 is fixedly connected to the top of each rubber sleeve 206. The ball bearing extends out of the outer shell 201 through the ball groove 202 and then locks into the connecting device.

[0035] In some examples, the fixing structure 2 includes a housing 201, whose outer wall is rigidly connected to the four corners of the surface of the housing 1. The outer wall of the housing 201 has two ball grooves 202 for the ball 207 to extend out. The inner edge of the housing 201 has a threaded groove 203, which connects to the screw 204 by thread to ensure a firm and adjustable connection. The bottom of the screw 204 is fixed with a butt 208. The outer wall of the butt 208 is connected to two springs 205 and two rubber sleeves 206. The rubber sleeves 206 provide protection and increase friction. The top of the rubber sleeves is connected to the ball 207. The ball 207 extends out of the housing 201 through the ball grooves 202 and can be locked onto the connected device to fix the device.

[0036] like Figures 1-3 As shown, a fixed busbar type current transformer according to an embodiment of the present invention is illustrated. The transmission assembly includes a connecting plate 11. Two such connecting plates 11 are fixedly connected to a connecting post 9 on the left side of their outer walls. On the right side of the outer walls of the two connecting plates 11, a connecting post 12 is firmly connected. The ends of the two connecting posts 12 are fixedly connected to a turntable 13. A current transformer 14 is fixedly connected to the inner wall of the turntable 13. Multiple tracks 15 are provided on the inner wall of the current transformer 14. A fixing sleeve 16 is fixedly connected to the inner wall of each track 15. The outer walls of the multiple fixing sleeves 16 are connected to a rotating plate 17 by a rotatable connection, which can fix the wires in the fixing sleeves 16. An electromagnetic coil 18 is also fixedly connected to the outer wall of the current transformer 14.

[0037] In some examples, the transmission assembly includes a connecting plate 11, which is fixed to a connecting post 9 on its left side and a connecting post 12 on its right side. The end of the connecting post 12 is fixed to a turntable 13. A current transformer 14 is fixed to the inner wall of the turntable 13. A track 15 is opened on the inner wall of the current transformer 14. A fixing sleeve 16 is fixed to the inner wall of the track 15. The fixing sleeve 16 is rotatably connected to a rotating plate 17 to fix the wire. An electromagnetic coil 18 is also fixed to the outer wall of the current transformer 14.

[0038] like Figures 5-6 As shown, a protective shell 19 is firmly fixed to the top of the outer wall of the current transformer 14. The main function of the protective shell 19 is to protect the internal components from external damage. A ball bearing 26 is installed on the inner wall of the shell 1 through a rotating connection to improve the rotation flexibility. The inner wall of the protective shell 19 is not only fixedly connected to a connector 20, but also to a connector 21. These two connectors are used to connect different devices. A ventilation hole 22 is carefully opened on the front side of the top of the shell 1. The function of the ventilation hole 22 is to ensure air circulation inside the shell 1 and prevent the internal temperature from being too high. A buffer pad 23 is fixedly connected to the rear side of the top of the shell 1. The main function of the buffer pad 23 is to absorb and reduce external impact. A handle 25 is firmly fixedly connected to the top of the outer shell 201 for easy gripping by the operator. A handle 24 is also fixedly connected to the top of the rotating shaft 3. This handle is mainly used to control the rotation of the rotating shaft 3.

[0039] In some examples, a protective shell 19 is fixed to the top of the outer wall of the current transformer 14 to protect the internal components. A second ball bearing 26 is rotatably mounted on the inner wall of the shell 1 to improve rotational flexibility. Connectors 1-20 and 21 are fixed to the inner wall of the protective shell 19 for connecting different devices. A ventilation hole 22 is opened on the front top of the shell 1 to ensure airflow, and a buffer pad 23 is fixed to the rear to absorb impact. A second handle 25 is fixed to the top of the outer shell 201, and a first handle 24 is fixed to the top of the rotating shaft 3 for easy operation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. Stationary busbar current transformer comprising a housing (1), characterized in that: The outer wall left side of the shell (1) is rotationally connected with a rotating shaft (3), the outer wall middle part of the rotating shaft (3) is fixedly connected with a right thread sleeve (4), the outer wall bottom of the rotating shaft (3) is fixedly connected with a left thread sleeve (5), the outer walls of the two right thread sleeves (4) and left thread sleeves (5) are all threadedly connected with moving blocks (6), the outer walls of the two moving blocks (6) are all slidingly connected with fixed columns (7), the outer walls of the two fixed columns (7) are all fixedly connected with bases (8), the top of the two bases (8) is all fixedly connected with connecting columns (9), the end of the rotating shaft (3) is fixedly connected with a supporting plate (10), the top of the two connecting columns (9) is all fixedly connected with transmission assemblies, the outer wall top of the shell (1) is fixedly connected with a fixing structure (2), the fixing structure (2) is used for fixing the shell (1) with other devices.

2. The fixed-bus current transformer of claim 1, wherein: The fixing structure (2) comprises an outer shell (201), the outer walls of a plurality of the outer shells (201) are all fixedly connected with the shell (1), the outer walls of the outer shells (201) are all provided with ball grooves (202), the inner walls of the outer shells (201) are all provided with screw grooves (203) near the edges, the outer walls of a plurality of the screw grooves (203) are all threadedly connected with screw rods (204), the bottoms of a plurality of the screw rods (204) are all fixedly connected with abutting heads (208), the outer walls of a plurality of the abutting heads (208) are all fixedly connected with springs (205), the outer walls of a plurality of the abutting heads (208) are all fixedly provided with rubber sleeves (206), and the top of a plurality of the rubber sleeves (206) is all fixedly connected with ball one (207).

3. The fixed-bus current transformer of claim 1, wherein: The transmission assembly comprises a connecting plate (11), the outer walls of the two connecting plates (11) are all fixedly connected with the connecting columns (9) on the left side, and the outer walls of the two connecting plates (11) are all fixedly connected with connecting columns (12) on the right side.

4. The fixed-bus current transformer of claim 3, wherein: The ends of the two connecting columns (12) are all fixedly connected with rotating discs (13), and the inner walls of the rotating discs (13) are all fixedly connected with mutual inductors (14).

5. The fixed-bus current transformer of claim 4, wherein: The inner walls of the mutual inductors (14) are all provided with tracks (15), and the inner walls of a plurality of the tracks (15) are all fixedly connected with fixed sleeves (16).

6. The fixed-bus current transformer of claim 5, wherein: The outer walls of a plurality of the fixed sleeves (16) are all rotationally connected with rotating plates (17), and the outer walls of the mutual inductors (14) are all fixedly connected with electromagnetic coils (18).

7. The fixed-bus current transformer of claim 4, wherein: The outer wall top of the mutual inductor (14) is fixedly connected with a protective shell (19), and the inner wall of the shell (1) is rotationally connected with ball two (26).

8. The fixed-bus current transformer of claim 7, wherein: The inner wall of the protective shell (19) is fixedly connected with joint one (20), and the inner wall of the protective shell (19) is fixedly connected with joint two (21).

9. The fixed-bus current transformer of claim 1, wherein: The top front side of the shell (1) is provided with a ventilation hole (22), and the top rear side of the shell (1) is fixedly connected with a buffer pad (23).

10. The fixed-bus current transformer of claim 2, wherein: The top of the outer shell (201) is fixedly connected with handle two (25), and the top of the rotating shaft (3) is fixedly connected with handle one (24).

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