A current transformer

Abstract

The application discloses a current transformer, comprising a current transformer body, a mounting seat which is integrally formed with the current transformer body, and a mounting portion of the mounting seat for placing a first connecting piece to connect the mounting seat and a base. The current transformer has the mounting seat integrally formed with the current transformer body, and can be produced by one mold, thereby improving production efficiency, and the first connecting piece can be placed in the mounting portion of the mounting seat and connected with the base such as a cabinet machine, and meanwhile, the number of the first connecting pieces required is reduced, thereby improving production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the electrical technical field, and particularly relates to a current transformer. BACKGROUND

[0002] The current transformer is a current transformation device, which has the functions of current transformation and isolation, and it converts large current of high-voltage circuit or low-voltage circuit into low-voltage small current to supply the meter and the relay protection device to realize measurement, metering, protection and other functions.

[0003] The prior art discloses a current transformer, which comprises a current transformer body and a mounting bracket, the current transformer body is mounted on the cabinet machine through the mounting bracket, wherein the current transformer body and the mounting bracket are connected through bolts, and the mounting bracket and the cabinet machine are connected through bolts to be mounted on the cabinet machine. However, the current transformer needs to be connected with the cabinet machine after the current transformer body and the mounting bracket are connected after being manufactured by different molds respectively, thereby reducing the production efficiency. SUMMARY

[0004] Therefore, the present application aims to solve the technical problem of the current transformer body and the mounting bracket needing to be connected after being manufactured by different molds respectively, thereby reducing the production efficiency, and providing a current transformer.

[0005] A current transformer comprises:

[0006] a current transformer body;

[0007] a mounting seat, which is integrally formed with the current transformer body, and is provided with a mounting portion, the mounting portion being used for placing a first connecting piece to connect the mounting seat and a base.

[0008] Further, the first connecting piece is clamped on the mounting portion.

[0009] Further, the mounting seat is provided with a mounting cavity, an open slot is arranged on the bottom wall of the mounting cavity, the first connecting piece is partially arranged in the mounting cavity and clamped on the open slot, and the mounting cavity and the open slot form the mounting portion.

[0010] Further, the mounting cavity comprises a first mounting cavity and a second mounting cavity, the first mounting cavity and the second mounting cavity are sequentially arranged along the direction close to the open slot, and the width of the first mounting cavity is smaller than the width of the second mounting cavity.

[0011] Further, the transformer body comprises a shell and a transformer window hole, the mounting seat and the shell are integrally formed, the shell is formed with the transformer window hole, wherein a first supporting accommodating part is formed in the transformer window hole, and the first supporting accommodating part is used for placing a supporting piece.

[0012] Further, the shell is provided with a second supporting accommodating part, and the second supporting accommodating part is used for placing the supporting piece.

[0013] Further, a second connecting piece connects the supporting piece and a suction accessory, the suction accessory is used for sucking a wire body located in the transformer window hole, and the supporting piece is placed in the first supporting accommodating part and / or the second supporting accommodating part.

[0014] Further, the suction accessory is a suction disc, the second connecting piece is inserted into the suction disc and connected to the supporting piece, and the supporting piece is arranged in the first supporting accommodating part and / or the second supporting accommodating part.

[0015] Further, the transformer window hole is formed with a plurality of width adapting parts.

[0016] Further, a plurality of symmetrical right-angle structures are arranged to enclose the transformer window hole.

[0017] The technical scheme of the present application has the following advantages:

[0018] 1. The current transformer provided by the present application comprises a current transformer body, a mounting seat integrally formed with the current transformer body, and an installation part provided on the mounting seat and used for placing a first connecting piece to connect the mounting seat and a base.

[0019] 2. The current transformer provided by the present application comprises a mounting cavity provided in the mounting seat, an open slot provided on the bottom wall of the mounting cavity, and a first connecting piece partially arranged in the mounting cavity and clamped in the open slot, wherein the mounting cavity and the open slot form the installation part.

[0020] 3. The current transformer provided by the present application, the mounting cavity comprises a first mounting cavity and a second mounting cavity, the first mounting cavity and the second mounting cavity are sequentially arranged along the direction close to the opening slot, and the width of the first mounting cavity is smaller than the width of the second mounting cavity. The current transformer with the above structure is provided with the first mounting cavity and the second mounting cavity, when the first connecting piece comprises a first bolt and a gasket, the first mounting cavity is matched with the head of the first bolt, and the second mounting cavity is matched with the gasket, so that the first connecting piece is clamped in the opening slot.

[0021] 4. The current transformer provided by the present application, the transformer body comprises a shell and a transformer window, the mounting seat and the shell are integrally formed, and the shell is formed with the transformer window, wherein a first supporting accommodating part is formed in the transformer window, and the first supporting accommodating part is used for placing a supporting piece. The current transformer with the above structure is provided with the first supporting accommodating part, when the occupied space of the wire body in the transformer window is small, the supporting piece can be placed in the first supporting accommodating part to adapt to the size of the second connecting piece.

[0022] 5. The current transformer provided by the present application, the shell is provided with a second supporting accommodating part, and the second supporting accommodating part is used for placing the supporting piece. The current transformer with the above structure is provided with the second supporting accommodating part, when the occupied space of the wire body in the transformer window is large, the supporting piece can be placed in the second supporting accommodating part to adapt to the size of the second connecting piece.

[0023] 6. The current transformer provided by the present application, a second connecting piece connects the supporting piece and a suction accessory, the suction accessory is used for sucking the wire body located in the transformer window, and the supporting piece is placed in the first supporting accommodating part and / or the second supporting accommodating part. The current transformer with the above structure can limit the supporting piece along the length direction of the wire body through the suction of the suction accessory, and the stability of the connection between the second connecting piece and the wire body is improved.

[0024] 7. The current transformer provided by the present application, the transformer window is formed with a plurality of width adapting parts. The current transformer with the above structure is provided with a plurality of width adapting parts to adapt to wire bodies with different widths, so that the adaptability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 Structure diagram of the current transformer provided in the embodiment of the present application;

[0027] Figure 2 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 1 Structure diagram of the current transformer provided in the embodiment of the present application;

[0028] Figure 3 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 1 Structure diagram of the current transformer provided in the embodiment of the present application;

[0029] Figure 4 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 1 Structure diagram of the current transformer provided in the embodiment of the present application;

[0030] Figure 5 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 4 Structure diagram of the current transformer provided in the embodiment of the present application;

[0031] Figure 6 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 1 Structure diagram of the current transformer provided in the embodiment of the present application;

[0032] Figure 7 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 6 Structure diagram of the current transformer provided in the embodiment of the present application;

[0033] Figure 8 Structure diagram of the current transformer provided in the embodiment of the present application; Figure 4 Structure diagram of the current transformer provided in the embodiment of the present application;

[0034] Explanation of reference signs:

[0035] 11 - housing, 12 - transformer window hole, 121 - first support accommodating part, 13 - annular cavity, 14 - secondary terminal terminal block, 141 - mounting hole, 15 - second support accommodating part, 16 - right-angle structure, 17 - protruding rib, 2 - mounting seat, 21 - first mounting cavity, 22 - second mounting cavity, 23 - open slot, 3 - base body, 41 - first bolt, 42 - gasket, 43 - flat washer, 44 - spring washer, 45 - nut, 5 - support piece, 6 - second connecting piece, 7 - suction accessory, 81 - cable, 82 - busbar, 9 - partition plate. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.

[0040] Embodiment

[0041] As Figures 1 to 8 shown, a current transformer includes a current transformer body and a mounting seat 2. The mounting seat 2 and the current transformer body are integrally formed, and the mounting seat 2 is provided with a mounting portion for placing a first connecting piece to connect the mounting seat 2 and a base 3. It should be noted that the base 3 can be a cabinet or other; Figure 3 The base 3 in the above is only schematic.

[0042] The first connecting piece in the embodiment is clamped in the mounting portion. Referring to Figures 1 to 3 , the mounting seat 2 is provided with a mounting cavity, and the bottom wall of the mounting cavity is provided with an open slot 23. The first connecting piece is partially located in the mounting cavity and clamped in the open slot 23, wherein the mounting cavity and the open slot 23 form the mounting portion.

[0043] The mounting portion is formed by the mounting cavity and the open slot 23, which facilitates the installation and fixation of the first connecting piece, and facilitates the connection of the mounting seat and the base 3.

[0044] As Figures 1 to 3As shown, the mounting cavity includes a first mounting cavity 21 and a second mounting cavity 22, the first mounting cavity 21 and the second mounting cavity 22 are sequentially arranged in the direction close to the opening slot 23, the width of the first mounting cavity 21 is smaller than the width of the second mounting cavity 22; the first connecting piece includes a first bolt 41, a gasket 42, a flat washer 43, a spring washer 44 and a nut 45, the bolt head of the first bolt 41 is located in the first mounting cavity 21 and the screw rod of the first bolt 41 is arranged through the opening slot 23 and the base body 3, the gasket 42 is located in the second mounting cavity 22, the side of the base body 3 away from the mounting cavity is sequentially provided with the flat washer 43, the spring washer 44 and the nut 45, the flat washer 43 abuts against the base body 3 and the nut 45 is connected to the screw rod of the first bolt 41.

[0045] By arranging the first mounting cavity 21 and the second mounting cavity 22, when the first connecting piece includes the first bolt 41 and the gasket 42, the first mounting cavity 21 is adapted to the bolt head of the first bolt 41 and the second mounting cavity 22 is adapted to the gasket 42, so that the first connecting piece is clamped in the opening slot 23.

[0046] As shown in Figure 1 and Figure 2 , the transformer body includes a shell 11, a transformer window hole 12, an annular cavity 13, a secondary terminal terminal block 14, a pouring sealant, a coil and a raised rib 17. Among them, the mounting seat 2 and the shell 11 are integrally formed, the shell 11 is formed with the transformer window hole 12, the annular cavity 13 and the secondary terminal terminal block 14; the annular cavity 13 is located at the outer periphery of the transformer window hole 12 and the coil is placed, the secondary terminal nut is welded on the coil lead, and the secondary terminal nut is installed in the mounting hole 141 of the secondary terminal terminal block 14; the raised rib 17 is formed on the inner wall surface of the shell 11 and located in the annular cavity 13, by arranging the raised rib 17, the coil can be lifted, there is a gap between the coil and the shell 11, the pouring sealant is filled into the gap, and the gap is filled after the pouring sealant is filled. It is beneficial to heat dissipation of the coil. When manufacturing, the pouring sealant is poured into the horizontally placed shell 11 containing the coil until it is aligned with the edge of the shell 11, and solidified at room temperature. It should be noted that the pouring sealant includes mixed resin, accelerator, curing agent and silicon powder, or can also be other pouring sealants.

[0047] As shown in Figure 1 , Figure 2 , Figures 4 to 7 , a first supporting part 121 is formed in the transformer window hole 12, and the first supporting part 121 is used to place the supporting part 5. Among them, the second connecting piece 6 connects the supporting part 5 and the suction part 7, and the suction part 7 adsorbs the wire body located in the transformer window hole 12. By arranging the first supporting part, when the occupied space of the wire body in the transformer window hole 12 is small, the supporting part 5 can be placed in the first supporting part to adapt to the size of the second connecting piece 6.

[0048] AsFigure 1 、 Figure 2 、 Figures 4 to 8 As shown in FIG. 1, the shell 11 is provided with a second support receiving part 15 for placing the support 5. The second support receiving part is above and / or below the first support receiving part 121, and the first support receiving part 121 and the second support receiving part 15 are both support receiving channels, and the support 5 is placed in the first support receiving part 121 and / or the second support receiving part 15. Specifically, the suction member 7 is a suction cup, the second connecting piece 6 is inserted into the connecting hole of the suction cup and connected to the support 5, and the support 5 is inserted into the first support receiving part 121 and / or the second support receiving part 15. The second connecting piece 6 can be a second bolt or other.

[0049] As shown in FIG. 2, the support 5 is provided with two connecting holes, and the second connecting piece 6 is respectively installed in the two connecting holes. The two second connecting pieces 6 are located on both sides of the shell 11. Of course, one connecting hole or other number of connecting holes can also be provided, and the second connecting piece 6 can also be provided on only one side of the shell 11. Figures 4 to 7 By providing the second support receiving part, when the occupation space of the conductor body in the transformer window 12 is large, the support 5 can be placed in the second support receiving part to adapt to the size of the second connecting piece 6. By adsorbing the conductor body through the suction member 7, the support 5 can be limited along the length direction of the conductor body, and the stability of the connection between the second connecting piece 6 and the conductor body is improved.

[0050] The transformer window 12 in the embodiment is formed with a plurality of width adapting parts. As shown in FIG. 3 and FIG. 4, a plurality of symmetrical right-angle structures 16 are enclosed to form the transformer window 12, and the right angles of the plurality of right-angle structures 16 on one side of the symmetry line are sequentially arranged away from the symmetry line to form a plurality of width adapting parts. Specifically, as shown in FIG. 5, when the conductor body is a busbar 82, the busbar 82 with different widths is located in the corresponding width adapting part. By providing a plurality of width adapting parts, the adaptability is improved to adapt to conductor bodies with different widths.

[0051] Figure 1 When the conductor body is a cable 81 as shown in FIG. 6, the installation of the current transformer is realized through the first connecting piece without the support 5; when the conductor body is a busbar 82 as shown in FIG. 7, the installation of the current transformer is realized through the support 5 without the first connecting piece. When the size of the second connecting piece 6 is specific, as shown in FIG. 8 and FIG. 9, when the conductor body is a single busbar, the support 5 is located in the first support receiving part 121; as shown in FIG. 10 and FIG. 11, when the conductor body is a double busbar, the support 5 is located in the second support receiving part 15. Figure 2 Figures 4 to 7

[0052] Figure 3 Figures 4 to 7 Figure 4 Figure 5 ​​​​​​​​Figure 6 and Figure 7 As shown in the figure, when the conductor body is double busbars, the support 5 is located in the second support accommodating part 15, and a partition plate 9 is arranged between the adjacent busbars. Of course, the conductor body can also be three busbars or four busbars or other; and the size of the second connecting piece 6 is not specific, and the support 5 can be placed in the first support accommodating part 121 and / or the second support accommodating part according to actual needs.

[0053] The current transformer of the present application is integrally formed with the mounting seat 2 and the current transformer body, that is, it can be produced by one mold, thereby improving the production efficiency, and facilitating the placement of the first connecting piece in the mounting part of the mounting seat 2 and the connection of the mounting seat 2 and the base body 3 such as a cabinet machine, and at the same time, the required number of first connecting pieces is reduced, thereby improving the production efficiency.

[0054] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A current transformer, characterized in that, include: Current transformer body; The mounting base is integrally formed with the current transformer body. The mounting base is provided with a mounting part for placing a first connector to connect the mounting base and the base. The current transformer body includes a housing, a transformer window, an annular cavity, potting compound, a coil, and a raised rib. The mounting base and the housing are integrally formed. The housing has the transformer window and the annular cavity. The annular cavity is located on the outer periphery of the transformer window and houses the coil. The raised rib is formed on the inner wall of the housing and located in the annular cavity, used to lift the coil to create a gap between the coil and the housing. The gap is filled with the potting compound. The mounting base has a mounting cavity, and the bottom wall of the mounting cavity has an opening groove. The first connecting part is located in the mounting cavity and is engaged in the opening groove, wherein the mounting cavity and the opening groove form the mounting part. The mounting cavity includes a first mounting cavity and a second mounting cavity, which are arranged sequentially along the direction close to the opening slot. The width of the first mounting cavity is smaller than the width of the second mounting cavity.

2. A current transformer according to claim 1, characterized in that, The first connector is fitted onto the mounting portion.

3. A current transformer according to any one of claims 1 to 2, characterized in that, A first support receiving portion is formed inside the window of the current transformer, and the first support receiving portion is used to place the support member.

4. A current transformer according to claim 3, characterized in that, The housing is provided with a second support receiving portion, which is used to place the support member.

5. A current transformer according to claim 4, characterized in that, The second connector connects the support member and the adsorption member. The adsorption member adsorbs the conductor located in the window of the current transformer. The support member is placed in the first support receiving part and / or the second support receiving part.

6. A current transformer according to claim 5, characterized in that, The suction member is a suction cup, the second connector is inserted into the suction cup and connected to the support member, and the support member passes through the first support receiving part and / or the second support receiving part.

7. A current transformer according to claim 3, characterized in that, The transformer window has multiple width-adapting sections.

8. A current transformer according to claim 7, characterized in that, Multiple symmetrically arranged right-angled structures enclose and form the transformer window.

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