Current transformer with stable wire connection
By designing stable components and limit components in the current transformer, the measurement unpreparation problem caused by unstable wire connection is solved, and the stable connection and anti-falling of the wire are achieved, which improves the reliability of the measurement.
Patent Information
- Application Number
- CN202420865599.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The existing current transformer connection method can easily cause the wire to fall off, resulting in unprepared measurements.
A current transformer including a stabilizing component and a limiting component is designed, and the stable connection and anti-falling of the wires are achieved through conductive plates, connecting columns, connecting frames, tie rods, springs and clamps.
It effectively avoids the problem of wire falling off during connection, ensures the stable operation of the current transformer, and improves the reliability of measurement.
Smart Images
Figure CN222637021U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field, in particular to a current transformer with stable wire connection. Background Art
[0002] The current transformer is an instrument that converts the large current on the primary side into the small current on the secondary side for measurement based on the principle of electromagnetic induction. The current transformer consists of a closed iron core and a winding. The current transformer is divided into two categories: electromagnetic current transformer and electronic current transformer. Its primary winding has few turns and is connected in series in the circuit of the current to be measured. The entire current of the line often flows through, and the secondary winding has more turns, which 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 function is to expand the meter limit and measure the current; convert the rated current into a unified nominal value to facilitate the standardization of the connected meter; isolate the meter from the high potential of the measured line to ensure safety.
[0003] When the existing current transformer is in use, it is connected to the current transformer through wires. However, most of the existing connection methods use screws for fastening, which is easy to fall off, resulting in measurement failure during use. Utility Model Content
[0004] The purpose of the utility model is to provide a current transformer with stable wire connection to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a current transformer with stable wire connection, comprising a current transformer body, a conductive plate electrically connected to the surface of the current transformer body, a connecting column fixed to the surface of the conductive plate, a stabilizing component and a limiting component arranged on the surface of the current transformer body, and the stabilizing component comprising:
[0006] A fixing plate, wherein the fixing plate is fixed on the surface of the current transformer body, the surface of the fixing plate is slidably connected with a connecting frame, a stabilizing plate is fixed on the top of the connecting frame, a spring is fixed on the side of the stabilizing plate close to the current transformer body, and the side of the spring away from the stabilizing plate is fixed to the surface of the current transformer body, a connecting rod is fixed to the inner wall of the connecting frame, a cylinder is fixed on the end of the connecting rod away from the connecting frame, and the end of the cylinder away from the connecting rod contacts the surface of the conductive plate, and a pull rod is fixed on the side of the connecting frame away from the current transformer body. The connecting frame moves outward, driving the connecting rod and the cylinder to move outward, the cylinder detaches from the connecting column, and the pull rod is pulled outward again, so that when the connection frame is released from the limit, the connection frame drives the connecting rod and the cylinder to return to their original position.
[0007] Preferably, the limit assembly includes a fixed column, the fixed column is fixed to the surface of the connecting frame, a sliding groove is provided on the side of the fixed column close to the spring 1, a block is slidably connected to the inner wall of the sliding groove of the fixed column, the end of the block away from the spring 1 is fixed with the spring 2, the end of the spring 2 away from the block is fixed to the inner wall of the sliding groove of the fixed column, a long rod is fixed to the surface of the current transformer body, the long rod passes through the limit block, the limit block is fixedly connected to the long rod, the long rod passes through a slider, the slider is slidably connected to the long rod, and the end of the long rod away from the current transformer body is fixed with a bottom plate, When the connecting frame moves outward, it synchronously drives the fixed column to move, and drives the card block to move synchronously. When the side of the card block away from the inclined surface collides with the side of the limit block close to the slider, the card block will be limited, and then the connecting frame will be limited. The pull rod is pulled outward again, and the connecting frame drives the card block to continue to move outward. When the side of the card block away from the inclined surface collides with the side of the slider away from the limit block, under the action of spring 1, the drive rod connecting frame and the fixed column return to their positions, and then the card block drives the slider to move close to the limit block. When the surface of the slider collides with the surface of the limit block, the card block will move along the surface of the slider, and then the limit of the card block will be released.
[0008] Preferably, a receiving groove is provided at one end of the cylinder close to the connecting column, and the shape of the receiving groove is consistent with that of the connecting column, so that the connecting column can enter the receiving groove without hindering normal return.
[0009] Preferably, a side of the clamping block close to the limiting block is configured as an inclined surface, and when the inclined surface of the clamping block is abutted, the clamping block can slide in the sliding groove of the fixing column.
[0010] Preferably, the limit block and the slider are both configured as isosceles trapezoids, and the limit block and the slider are configured opposite to each other, and the volume of the slider is larger than the volume of the limit block.
[0011] Preferably, a spring three is fixed to a side of the bottom plate close to the current transformer body, and an end of the spring three away from the bottom plate is fixed to an end of the slider away from the limit block, so that the spring three facilitates the return of the slider.
[0012] Compared with the prior art, the utility model provides a current transformer with stable wire connection, which has the following beneficial effects:
[0013] 1. The current transformer with stable wire connection is provided with a stabilizing component. When the wire needs to be connected to the current transformer body, the personnel holds the pull rod and pulls the rod outward to move the connecting frame outward, which in turn drives the connecting rod and the cylinder to move outward, so that the cylinder is separated from the connecting column. At this time, the personnel wraps the wire around the surface of the connecting column and pulls the pull rod outward again to release the limit of the connecting frame. The connecting frame drives the connecting rod and the cylinder to return to their original position, so that the cylinder stabilizes the wire. The force of the spring can maintain the squeezing force of the cylinder on the wire to avoid separation.
[0014] 2. The current transformer with stable wire connection is provided with a limit assembly. When the connecting frame moves outward, it will synchronously drive the fixed column to move, and will drive the card block to move synchronously. When the side of the card block away from the inclined surface conflicts with the side of the limit block close to the slider, the card block will be limited, and then the connecting frame will be limited, which is convenient for personnel to wind the wires and pull the pull rod outward again, so that the connecting frame drives the card block to continue to move outward. When the side of the card block away from the inclined surface conflicts with the side of the slider away from the limit block, at this time, under the action of spring 1, the rod connecting frame and the fixed column will be driven to return to their positions, and then the card block drives the slider to move close to the limit block. When the surface of the slider conflicts with the surface of the limit block, the card block will move along the surface of the slider, and then the limit of the card block will be released, and the connecting frame can return to its position normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;
[0016] Figure 2 For this utility model Figure 1 A is a schematic diagram of the enlarged structure;
[0017] Figure 3 For this utility model Figure 2 Middle B is a schematic diagram of the enlarged structure;
[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model from top view;
[0019] Figure 5 For this utility model Figure 4 Middle C is a schematic diagram of the enlarged structure;
[0020] Figure 6 For this utility model Figure 5 Middle D is a schematic diagram of the enlarged structure;
[0021] Figure 7 It is a schematic diagram of the partial internal structure of the utility model.
[0022] In the figure: 1. current transformer body; 2. conductive plate; 3. connecting column; 4. stabilizing assembly; 40. fixing plate; 41. connecting frame; 42. pull rod; 43. stabilizing plate; 44. spring one; 45. connecting rod; 46. cylinder; 5. limiting assembly; 50. fixing column; 51. clamping block; 52. spring two; 53. long rod; 54. limiting block; 55. slider; 56. bottom plate; 57. spring three. DETAILED DESCRIPTION
[0023] like Figure 1-7As shown, the utility model provides a technical solution: a current transformer with stable wire connection, including a current transformer body 1, a conductive plate 2 is electrically connected to the surface of the current transformer body 1, a connecting column 3 is fixed to the surface of the conductive plate 2, a stabilizing component 4 and a limiting component 5 are arranged on the surface of the current transformer body 1, and the stabilizing component 4 includes: a fixing plate 40, a connecting frame 41, a pull rod 42, a stabilizing plate 43, a spring 44, a connecting rod 45, and a cylinder 46. The fixing plate 40 is fixed on the surface of the current transformer body 1, the surface of the fixing plate 40 is slidably connected to the connecting frame 41, the top of the connecting frame 41 is fixed with a stabilizing plate 43, a spring 44 is fixed to the side of the stabilizing plate 43 close to the current transformer body 1, and the side of the spring 44 away from the stabilizing plate 43 is fixed to the surface of the current transformer body 1, and the connecting frame 4 A connecting rod 45 is fixed to the inner wall of 1, and a cylinder 46 is fixed to one end of the connecting rod 45 away from the connecting frame 41, and one end of the cylinder 46 away from the connecting rod 45 contacts the surface of the conductive plate 2. A pull rod 42 is fixed to one side of the connecting frame 41 away from the current transformer body 1. When it is necessary to connect the wire to the current transformer body 1, a person holds the pull rod 42 and pulls the rod outward, so that the connecting frame 41 moves outward, which in turn drives the connecting rod 45 and the cylinder 46 to move outward, so that the cylinder 46 is separated from the connecting column 3. At this time, the person wraps the wire around the surface of the connecting column 3, and pulls the pull rod 42 outward again, so that when the connecting frame 41 is released from the limit, the connecting frame 41 drives the connecting rod 45 and the cylinder 46 to return to their original position, so that the cylinder 46 stabilizes the wire, and the force of the spring 44 can maintain the squeezing force of the cylinder 46 on the wire to avoid separation;
[0024] The limiting assembly 5 includes a fixed column 50, which is fixed on the surface of the connecting frame 41. A sliding groove is provided on one side of the fixed column 50 close to the spring 1 44. A card block 51 is slidably connected to the inner wall of the sliding groove of the fixed column 50. A spring 2 52 is fixed to the end of the card block 51 away from the spring 1 44. The end of the spring 2 52 away from the card block 51 is fixed to the inner wall of the sliding groove of the fixed column 50. A long rod 53 is fixed to the surface of the current transformer body 1. The long rod 53 passes through the limiting block 54. The limiting block 54 is fixedly connected to the long rod 53. A slider 55 passes through the long rod 53. The slider 55 is slidably connected to the long rod 53. A bottom plate 56 is fixed to the end of the long rod 53 away from the current transformer body 1. When the connecting frame 41 moves outward, the fixed column 50 will be synchronously driven to move, which will drive the card block 51 to move. The block 51 moves synchronously. When the side of the card block 51 away from the inclined surface conflicts with the side of the limit block 54 close to the slider 55, the card block 51 will be limited, thereby limiting the connection frame 41, making it convenient for personnel to wind the wires and pull the pull rod 42 outward again, so that the connection frame 41 drives the card block 51 to continue to move outward. When the side of the card block 51 away from the inclined surface conflicts with the side of the slider 55 away from the limit block 54, under the action of the spring 1 44, the rod connection frame 41 and the fixed column 50 will be driven to return to their positions, and then the card block 51 drives the slider 55 to move close to the limit block 54. When the surface of the slider 55 conflicts with the surface of the limit block 54, the card block 51 will move along the surface of the slider 55, thereby releasing the limit of the card block 51, so that the connection frame 41 can return to its position normally.
[0025] An accommodating groove is provided at one end of the cylinder 46 close to the connecting column 3. The shape of the accommodating groove is consistent with that of the connecting column 3, so that the connecting column 3 can enter the accommodating groove of the cylinder 46.
[0026] The side of the block 51 close to the limit block 54 is set in an inclined shape. When it is resisted, the block 51 can enter the slide groove of the fixed column 50 without hindering the normal movement of the block 51.
[0027] The limit block 54 and the slider 55 are both configured to be isosceles trapezoids, and the limit block 54 and the slider 55 are configured to face each other, and the volume of the slider 55 is larger than the volume of the limit block 54;
[0028] A spring 3 57 is fixed to one side of the bottom plate 56 close to the current transformer body 1 , and one end of the spring 3 57 away from the bottom plate 56 is fixed to one end of the slider 55 away from the limit block 54 , so that the spring 3 57 can return the slider 55 to its original position.
[0029] When it is necessary to connect the wire to the current transformer body 1, the personnel hold the pull rod 42 and pull the rod outward, so that the connecting frame 41 moves outward, which will then drive the connecting rod 45 and the cylinder 46 to move outward, so that the cylinder 46 is separated from the connecting column 3. At this time, the personnel wrap the wire around the surface of the connecting column 3. At the same time, when the connecting frame 41 moves outward, it will synchronously drive the fixed column 50 to move, and will drive the clamping block 51 to move synchronously. When the side of the clamping block 51 away from the inclined surface collides with the side of the limit block 54 close to the slider 55, the clamping block 51 will be limited, so that the connecting frame 41 is limited, which is convenient for personnel to wind the wire without having to pull the pull rod 42 all the time. When the winding is completed, the personnel will pull the pull rod 42 outward again, so that the connecting frame 4 1 drives the card block 51 to continue to move outward. When the side of the card block 51 away from the inclined surface conflicts with the side of the slider 55 away from the limit block 54, the rod connection frame 41 and the fixed column 50 are driven to return to their positions under the action of the spring 1 44, and then the card block 51 drives the slider 55 to move close to the limit block 54. When the surface of the slider 55 conflicts with the surface of the limit block 54, the card block 51 moves along the surface of the slider 55, and then the limit of the card block 51 is released. At the same time, under the action of the spring 3 57, the slider 55 is returned, so that the connecting frame 41 drives the connecting rod 45 and the cylinder 46 to return, so that the cylinder 46 stabilizes the wire. The force of the spring 1 44 can maintain the squeezing force of the cylinder 46 on the wire to avoid separation.
[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A current transformer with stable wire connection, comprising a current transformer body (1), characterized in that: The surface of the current transformer body (1) is electrically connected to a conductive plate (2), a connecting column (3) is fixed to the surface of the conductive plate (2), and a stabilizing component (4) and a limiting component (5) are arranged on the surface of the current transformer body (1), and the stabilizing component (4) comprises: A fixing plate (40), wherein the fixing plate (40) is fixed on the surface of the current transformer body (1), the surface of the fixing plate (40) is slidably connected to a connecting frame (41), a stabilizing plate (43) is fixed on the top of the connecting frame (41), a spring (44) is fixed on the side of the stabilizing plate (43) close to the current transformer body (1), and the side of the spring (44) away from the stabilizing plate (43) is fixed on the surface of the current transformer body (1), a connecting rod (45) is fixed on the inner wall of the connecting frame (41), a cylinder (46) is fixed on the end of the connecting rod (45) away from the connecting frame (41), and the end of the cylinder (46) away from the connecting rod (45) contacts the surface of the conductive plate (2), and a pull rod (42) is fixed on the side of the connecting frame (41) away from the current transformer body (1).
2. A current transformer with stable wire connection according to claim 1, characterized in that: The limit assembly (5) comprises a fixed column (50), the fixed column (50) being fixed on the surface of the connection frame (41), a sliding groove being provided on a side of the fixed column (50) close to the spring 1 (44), a block (51) being slidably connected to the inner wall of the sliding groove of the fixed column (50), a spring 2 (52) being fixed to the end of the block (51) away from the spring 1 (44), the end of the spring 2 (52) away from the block (51) being fixed to the inner wall of the sliding groove of the fixed column (50), a long rod (53) being fixed to the surface of the current transformer body (1), the long rod (53) passing through the limit block (54), the limit block (54) being fixedly connected to the long rod (53), a slider (55) passing through the long rod (53), the slider (55) being slidably connected to the long rod (53), and a bottom plate (56) being fixed to the end of the long rod (53) away from the current transformer body (1).
3. A current transformer with stable wire connection according to claim 1, characterized in that: An accommodating groove is provided at one end of the cylinder (46) close to the connecting column (3), and the shape of the accommodating groove is consistent with that of the connecting column (3).
4. A current transformer with stable wire connection according to claim 2, characterized in that: A side of the clamping block (51) close to the limiting block (54) is arranged in a slope shape.
5. A current transformer with stable wire connection according to claim 2, characterized in that: The limit block (54) and the slider (55) are both arranged in an isosceles trapezoidal shape, and the limit block (54) and the slider (55) are arranged opposite to each other, and the volume of the slider (55) is greater than the volume of the limit block (54).
6. A current transformer with stable wire connection according to claim 2, characterized in that: A spring three (57) is fixed on one side of the bottom plate (56) close to the current transformer body (1), and one end of the spring three (57) away from the bottom plate (56) is fixed to one end of the slider (55) away from the limit block (54).