Binding structure for iron core of current transformer

Abstract

The utility model discloses an iron core binding structure of a current transformer. The iron core binding structure comprises a shell, an iron core main body, a binding assembly and an enameled copper wire, the binding assembly is arranged, namely, the lower insulation shell, the upper insulation shell and the auxiliary shell are in butt joint, the four sides of the iron core body can be quickly bound, insulation guarantee is achieved through the inner insulation layer, the abrasion short circuit problem is reduced, meanwhile, the buffer structures are arranged on the side edges of the lower insulation shell and the upper insulation shell, and when the rubber abutting plate is installed and squeezed, the rubber abutting plate can be prevented from being damaged. When the current transformer is installed, the connecting arm can be pushed by the sliding block, so that the sliding block can extrude a spring additionally installed outside the guide rod, the spring is elastically compressed, the installation stability of the iron core body and the shell is enhanced, the shock resistance of the iron core body can be enhanced through the effect of the spring, and therefore the reliability of the current transformer is remarkably enhanced, and the service life of the current transformer is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically to a current transformer core wrapping structure. Background Technology

[0002] A current transformer consists of a closed iron core and windings. Based on the principle of electromagnetic induction, it converts a large primary current into a small secondary current. The iron core is wrapped with insulating paper to prevent the enameled wire from being directly wound on the iron core. The edges or sharp protrusions on the iron core may wear through the insulating varnish on the enameled wire, causing a short circuit.

[0003] An existing patent application (CN202220631032.1) discloses a current transformer core wrapping structure, comprising: an inner core wrapping layer, an outer core wrapping layer, and an outer core wrapping layer. The inner core wrapping layer is disposed on the inner diameter surface of the current transformer core, the outer core wrapping layer is disposed on the outer diameter surface of the current transformer core, and the outer core wrapping layer is disposed on the surfaces of the two sides of the current transformer core. The inner core wrapping layer, the outer core wrapping layer, and the outer core wrapping layer are fixed to the current transformer core with insulating tape. The inner core wrapping layer, the outer core wrapping layer, and the outer core wrapping layer constitute the basic wrapping structure of the current transformer core, which is easy to install. The added vibration damping layer further improves the current transformer core's resistance to external vibration.

[0004] However, the existing technology still requires wrapping the iron core with the inner diameter wrapping layer, the outer diameter wrapping layer, and the outer side wrapping layer in sequence, which is a cumbersome process and prolongs the time required to wrap the iron core. Utility Model Content

[0005] The purpose of this invention is to provide a current transformer core wrapping structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a current transformer core wrapping structure, comprising a shell, a core body, a wrapping assembly, and enameled copper wire, wherein the core body is installed inside the shell, the wrapping assembly is provided outside the core body, and enameled copper wire is wound around the wrapping assembly.

[0007] Preferably, the wrapping assembly includes a lower insulating shell, an upper insulating shell is provided at the upper end of the lower insulating shell, and the lower insulating shell and the upper insulating shell are connected to the outside of the iron core body. A connecting shaft is fixed at the lower end of the upper insulating shell, a connecting hole is opened inside the lower insulating shell, the connecting hole is connected to the connecting shaft, and a guide ring is installed on one side of the upper end of the upper insulating shell.

[0008] Preferably, the lower insulating shell and the upper insulating shell further include a fixing strip fixed to the side, the fixing strip being connected to the auxiliary shell on the side away from the lower insulating shell or the upper insulating shell, the lower insulating shell, the upper insulating shell and the auxiliary shell are all equipped with an insulating layer inside, and the lower insulating shell and the upper insulating shell are equipped with a buffer structure on their sides.

[0009] Preferably, the buffer structure includes a fixing block that is respectively connected to the sides of the lower insulating shell and the upper insulating shell. A guide rod is installed inside the fixing block. A slider is slidably mounted on the outside of the guide rod. A spring is installed on the outside of the guide rod and abuts against the side of the slider. A connecting arm is rotatably connected to one side of the slider. The side of the connecting arm away from the slider is connected to a rubber abutment.

[0010] Preferably, the lower insulating shell and the upper insulating shell are arranged symmetrically from left to right, and the front and rear sides of the lower insulating shell and the upper insulating shell are connected to the auxiliary shell by fixing strips.

[0011] Preferably, the buffer structure is arranged in pairs along the side of the lower or upper insulating shell, and the outer side of the buffer structure abuts against the inner wall of the outer shell.

[0012] Preferably, the slider, spring, and connecting arm are arranged in pairs along the outer side of the guide rod, and the side of the connecting arm away from the slider is rotatably connected to the rubber abutment.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model incorporates a wrapping assembly. By connecting the lower and upper insulating shells, the left and right sides of the iron core body can be quickly wrapped. The auxiliary shells, which are connected to the front and rear sides of the lower and upper insulating shells by fixing strips, can then quickly wrap the front and rear sides of the iron core body. This allows for quick and convenient wrapping and protection of the outer side of the iron core body. Furthermore, the internal insulating layer provides insulation protection and reduces wear and short circuit problems.

[0015] 2. This utility model incorporates a buffer structure on the sides of the lower and upper insulating shells. When the rubber abutment is installed and pressed, the connecting arm can push the slider. In this way, the slider can press the spring installed outside the guide rod, causing the spring to compress elastically, thereby strengthening the installation stability of the iron core body and the outer shell. Furthermore, the effect of the spring itself can enhance the shock resistance of the iron core body, thus significantly improving the reliability and service life of the current transformer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the wrapping component of this utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional disassembled structure of the bandaging component of this utility model;

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a top view of the internal structure of the buffer structure of this utility model.

[0021] In the diagram: Outer shell-1, Iron core body-2, Wrapping assembly-3, Lower insulating shell-31, Fixing strip-311, Auxiliary shell-312, Insulation layer-313, Buffer structure-314, Fixing block-3141, Guide rod-3142, Slider-3143, Spring-3144, Connecting arm-3145, Rubber abutment-3146, Upper insulating shell-32, Connecting shaft-33, Connecting hole-34, Guide ring-35, Enamelled copper wire-4. Detailed Implementation

[0022] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0023] Please see Figure 1 This utility model provides a current transformer core wrapping structure, including a shell 1, a core body 2, a wrapping component 3 and an enameled copper wire 4. The core body 2 is installed inside the shell 1, and the wrapping component 3 is provided outside the core body 2. The enameled copper wire 4 is wound around the outside of the wrapping component 3.

[0024] Please see Figure 2-4 In this embodiment, the wrapping assembly 3 includes a lower insulating shell 31, with an upper insulating shell 32 abutting against the upper end of the lower insulating shell 31. The lower insulating shell 31 and the upper insulating shell 32 are abutted on the left and right sides of the iron core body 2. A connecting shaft 33 is fixedly connected at equal intervals to the lower end of the upper insulating shell 32. A connecting hole 34 is opened at equal intervals inside the lower insulating shell 31, and the connecting hole 34 is connected to the connecting shaft 33. In this way, the connection and combination of the lower insulating shell 31 and the upper insulating shell 32 can be accurately realized, and the iron core body 2 can be quickly wrapped. A guide ring 35 is installed on one side of the upper end of the upper insulating shell 32. The guide ring 35 facilitates the winding and guiding of the end of the enameled copper wire 4.

[0025] The lower insulating shell 31 and the upper insulating shell 32 also include a fixing strip 311 fixed on the side for connection. The side of the fixing strip 311 away from the lower insulating shell 31 or the upper insulating shell 32 is connected to the auxiliary shell 312. The lower insulating shell 31, the upper insulating shell 32 and the auxiliary shell 312 are all equipped with an insulating layer 313. The insulation layer 313 can be used to ensure insulation and improve the reliability and service life of the current transformer. The lower insulating shell 31 and the upper insulating shell 32 are equipped with a buffer structure 314 on the side to achieve mechanical shock absorption protection.

[0026] The lower insulating shell 31 and the upper insulating shell 32 are symmetrically arranged from left to right, and the front and rear sides of the lower insulating shell 31 and the upper insulating shell 32 are connected to the auxiliary shell 312 by fixing strips 311. In this way, the outer side of the iron core body 2 can be quickly wrapped by the docking combination of the lower insulating shell 31, the upper insulating shell 32 and the auxiliary shell 312 without too many complicated steps.

[0027] Please see Figure 5 In this embodiment, the buffer structure 314 includes a fixing block 3141 that is respectively connected to the sides of the lower insulating shell 31 and the upper insulating shell 32. A straight guide rod 3142 is installed inside the fixing block 3141. Slider blocks 3143 are slidably installed on both sides of the outer end of the guide rod 3142. Springs 3144 are provided on both sides of the outer end of the guide rod 3142, and one end of each spring 3144 is connected to the side of the slider 3143. A connecting arm 3145 is rotatably connected to one side of the slider 3143. The side of the connecting arm 3145 away from the slider 3143 is connected to the rubber abutment 3146.

[0028] The buffer structure 314 is arranged in pairs along the side of the lower insulating shell 31 or the upper insulating shell 32, and the outer side of the buffer structure 314 abuts against the inner wall of the outer shell 1. In this way, the shock absorption protection can be achieved, and the shock resistance of the wrapping assembly 3 and the current transformer can be improved.

[0029] The slider 3143, spring 3144 and connecting arm 3145 are arranged in pairs along the outside of the guide rod 3142, and the side of the connecting arm 3145 away from the slider 3143 is rotatably connected to the rubber abutment 3146. In this way, a stable and earthquake-resistant structure can be formed.

[0030] The working principle is as follows:

[0031] First, place the iron core body 2 inside the lower insulating shell 31, so that the iron core body 2 is pre-connected with the lower insulating shells 31 on both sides and the auxiliary shells 312 installed corresponding to the front and rear of the lower insulating shells 31. After the connection is completed, the upper insulating shell 32 can be inserted into the connecting hole 34 inside the lower insulating shell 31 through the connecting shaft 33 installed at the bottom, so that the upper insulating shell 32 and the lower insulating shell 31 are combined and the iron core body 2 is wrapped quickly without too many complicated steps. At the same time, the upper insulating shell The upper insulating shell 32 and the lower insulating shell 31 are wrapped with enameled copper wire 4, which can improve the combination of the upper insulating shell 32 and the lower insulating shell 31. Thus, the binding activity of the iron core body 2 can be initially completed. Through the cooperation of the lower insulating shell 31, the auxiliary shell 312 and the insulating layer 313 installed inside the upper insulating shell 32, the insulation of the iron core body 2 can be guaranteed, preventing the enameled copper wire 4 from being directly wrapped on the iron core body 2, which would cause the edges or sharp protrusions on the iron core body 2 to wear through the insulating varnish on the enameled copper wire 4 and cause a short circuit.

[0032] After the core body 2 is wrapped, it can be placed inside the outer casing 1. During this process, the buffer structures 314 on the left and right sides of the lower insulating shell 31 and the upper insulating shell 32 allow the rubber abutments 3146 inside the buffer structures 314 to abut against the inner wall of the outer casing 1. Through the compression effect, the rubber abutments 3146 press against the connecting arm 3145 rotatably connected on one side. In this way, the connecting arm 3145 pushes the slider 3143 connected at one end, causing the slider 3143 to move along the outside of the guide rod 3142, thereby compressing the spring 3144 installed on the outside of the guide rod 3142. As a result, the four rubber abutments 3146 can stably abut against the four sides of the inner wall of the outer casing 1, improving the stability of the connection between the core body 2 and the outer casing 1. At the same time, the elastic effect of the spring 3144 can also achieve shockproof protection for the core body 2 and the wrapping assembly 3, thereby significantly enhancing the reliability and service life of the current transformer.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A current transformer core wrapping structure, characterized in that: It includes an outer shell (1), an iron core body (2), a wrapping assembly (3) and an enameled copper wire (4). The iron core body (2) is installed inside the outer shell (1), and the wrapping assembly (3) is provided outside the iron core body (2). The enameled copper wire (4) is wound around the outside of the wrapping assembly (3). The wrapping assembly (3) includes a lower insulating shell (31), an upper insulating shell (32) is provided at the upper end of the lower insulating shell (31), and the lower insulating shell (31) and the upper insulating shell (32) are connected to the outside of the iron core body (2). A connecting shaft (33) is fixed at the lower end of the upper insulating shell (32). A connecting hole (34) is opened inside the lower insulating shell (31), and the connecting hole (34) is connected to the connecting shaft (33). A guide ring (35) is installed on one side of the upper end of the upper insulating shell (32).

2. The current transformer core wrapping structure according to claim 1, characterized in that: The lower insulating shell (31) and the upper insulating shell (32) also include a fixing strip (311) fixed to the side. The fixing strip (311) is connected to the auxiliary shell (312) on the side away from the lower insulating shell (31) or the upper insulating shell (32). The lower insulating shell (31), the upper insulating shell (32) and the auxiliary shell (312) are all equipped with an insulating layer (313). The lower insulating shell (31) and the upper insulating shell (32) are equipped with a buffer structure (314) on the side.

3. The current transformer core wrapping structure according to claim 2, characterized in that: The buffer structure (314) includes a fixing block (3141) respectively connected to the sides of the lower insulating shell (31) and the upper insulating shell (32). A guide rod (3142) is installed inside the fixing block (3141). A slider (3143) is slidably mounted on the outside of the guide rod (3142). A spring (3144) is installed on the outside of the guide rod (3142), and the spring (3144) abuts against the side of the slider (3143). A connecting arm (3145) is rotatably connected to one side of the slider (3143). The side of the connecting arm (3145) away from the slider (3143) is connected to a rubber abutment (3146).

4. The current transformer core wrapping structure according to claim 2, characterized in that: The lower insulating shell (31) and the upper insulating shell (32) are symmetrically arranged from left to right, and the front and rear sides of the lower insulating shell (31) and the upper insulating shell (32) are connected to the auxiliary shell (312) by fixing strips (311).

5. The current transformer core wrapping structure according to claim 3, characterized in that: The buffer structure (314) is arranged in pairs along the side of the lower insulating shell (31) or the upper insulating shell (32), and the outer side of the buffer structure (314) abuts against the inner wall of the outer shell (1).

6. The current transformer core wrapping structure according to claim 3, characterized in that: The slider (3143), spring (3144) and connecting arm (3145) are arranged in pairs along the outside of the guide rod (3142), and the side of the connecting arm (3145) away from the slider (3143) is rotatably connected to the rubber abutment (3146).

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