Transformer and current transformer mounting structure thereof

Abstract

The utility model discloses a transformer and a current transformer installation structure thereof, the current transformer installation structure comprises an installation frame, the installation frame comprises a first pressing piece, a second pressing piece and a plurality of groups of pull screw rods, the first pressing piece and the second pressing piece are sequentially arranged from top to bottom, and the first pressing piece and the second pressing piece are connected through the plurality of groups of pull screw rods; each group of pull screw rods comprises a plurality of pull screw rods, and the pull screw rods are used for being tightly arranged around the periphery of the current transformer; the first fixing piece and the second fixing piece are sequentially fixed in the transformer from top to bottom, the first pressing piece is detachably connected with the first fixing piece, and the second pressing piece is detachably connected with the second fixing piece. The multi-phase current transformer can be firmly installed on the transformer so as to meet different design requirements of the transformer, and meanwhile the transformer can be safely transported, put into a box and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformer installation, and more specifically to a transformer and a current transformer installation structure thereof. Background Art

[0002] Current transformer (CT) is often used in transformers to play the role of protection, control and monitoring.

[0003] At present, CTs are mostly installed inside the transformer's raised base or under the box cover, both of which have limited space. If the transformer design requires a multi-phase CT, the multi-phase CT contains too many CTs and is large in size, which cannot meet the installation requirements of the multi-phase CT.

[0004] In summary, how to solve the problem that too many CTs cannot be installed when their sizes are too large is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a current transformer installation structure, which can firmly install a multi-phase current transformer on a transformer to meet different design requirements of the transformer, while allowing the transformer to be safely transported, dropped, and other operations.

[0006] Another object of the utility model is to provide a transformer including the above-mentioned current transformer installation structure.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A current transformer installation structure, comprising:

[0009] The mounting frame includes a first pressing member, a second pressing member and a plurality of groups of pull screws, wherein the first pressing member and the second pressing member are arranged in sequence from top to bottom and are connected by the plurality of groups of the pull screws to form a receiving space for placing a multi-phase current transformer, and each group of the pull screws includes a plurality of the pull screws, which are arranged closely around the outer periphery of the current transformer;

[0010] The first fixing member and the second fixing member are used to be fixed inside the transformer in sequence from top to bottom. The first pressing member is detachably connected to the first fixing member, and the second pressing member is detachably connected to the second fixing member.

[0011] Preferably, the first pressing member comprises a first pressing plate member, a first crossbeam and a first connecting member, the first pressing plate member is used to press on the top end of the multi-phase current transformer, the first crossbeam is arranged on the top end surface of the first pressing plate member and is connected to the first fixing member through the first connecting member;

[0012] The second clamping member includes a second clamping plate member, a second beam and a second connecting member. The second clamping plate member is used to clamp the bottom end of the multi-phase current transformer. The second beam is arranged on the bottom end surface of the second clamping plate member and is connected to the second fixing member through the second connecting member.

[0013] Preferably, the first pressing plate member and the second pressing plate member are arranged parallel to and opposite to each other.

[0014] Preferably, the first pressure plate component includes a plurality of first pressure plates, which are evenly distributed along the extension direction of the first beam, and the second pressure plate component includes a plurality of second pressure plates, which are evenly distributed along the extension direction of the second beam, and the plurality of second pressure plates are arranged one-to-one with the plurality of first pressure plates.

[0015] Preferably, the first crossbeam comprises two first U-shaped plates, the openings of which are arranged back to back and parallel to each other on the first pressure plate component, and / or the second crossbeam comprises two second U-shaped plates, the openings of which are arranged back to back and parallel to each other on the second pressure plate component.

[0016] Preferably, the first connecting member comprises at least two U-shaped connecting plates spaced apart along the extending direction of the first cross beam, one end of the U-shaped connecting plate is integrally connected to the two first U-shaped plates, and the other end is detachably connected to the first fixing member.

[0017] Preferably, the second connecting member comprises at least two bottom plates spaced apart along the extending direction of the second cross beam, one end of the bottom plate is detachably connected between the two second U-shaped plates, and the other end is detachably connected to the second fixing member.

[0018] A transformer comprises any one of the current transformer installation structures described above.

[0019] Compared with the above-mentioned background technology, when the current transformer installation structure provided by the utility model is applied to the installation of a multi-phase current transformer, the bottom end of the multi-phase current transformer is arranged on the second clamping member, the first clamping member is placed on the top of the multi-phase current transformer, each phase current transformer corresponds to a group of pull screws, a group of pull screws is composed of a plurality of pull screws, and the plurality of pull screws are connected between the first clamping member and the second clamping member, so that the multi-phase current transformer is clamped between the first clamping member and the second clamping member, so as to realize the vertical limit of the multi-phase current transformer, and each group of pull screws is tightly arranged around the outer periphery of the corresponding current transformer , in order to realize the circumferential limitation of the multi-phase current transformer, the first clamping piece and the second clamping piece are connected by multiple sets of pull screws to form a mounting frame, and the multi-phase current transformer is fastened to the mounting frame; thereafter, the mounting frame needs to be fastened inside the transformer. Specifically, the first fixing piece and the second fixing piece are internal structural parts of the transformer, and the two are arranged in sequence from top to bottom, the first clamping piece is installed on the first fixing piece, and the second clamping piece is installed on the second fixing piece, so that the multi-phase current transformer is firmly installed on the transformer to meet the different design requirements of the transformer, and at the same time, the transformer can be safely transported, dropped into the box, and other operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 The present invention is a schematic structural diagram of a current transformer installation structure provided by the present invention.

[0022] In the figure:

[0023] 1 is a mounting frame, 2 is a first fixing member, 3 is a second fixing member, and 4 is a current transformer;

[0024] 11 is a first pressing member, 111 is a first pressing plate member, 112 is a first cross beam, and 113 is a first connecting member;

[0025] 12 is a second pressing member, 121 is a second pressing plate member, 122 is a second cross beam, and 123 is a second connecting member;

[0026] 13 is a pull screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The core of the utility model is to provide a current transformer installation structure, which can firmly install a multi-phase current transformer on a transformer to meet different design requirements of the transformer, while allowing the transformer to be safely transported, dropped, and operated.

[0029] Another core of the utility model is to provide a transformer including the above-mentioned current transformer installation structure.

[0030] Please refer to Figure 1 The present application provides a current transformer installation structure, including a mounting frame 1, a first fixing member 2 and a second fixing member 3. The mounting frame 1 includes a first pressing member 11, a second pressing member 12 and a plurality of pull screws 13. The first pressing member 11 and the second pressing member 12 are arranged in sequence from top to bottom, and are connected by a plurality of pull screws 13 to form a storage space for placing a multi-phase current transformer 4, and each group of pull screws 13 includes a plurality of pull screws 13, which are arranged closely around the outer periphery of the current transformer 4; the first fixing member 2 and the second fixing member 3 are used to be fixed inside the transformer in sequence from top to bottom, the first pressing member 11 is detachably connected to the first fixing member 2, and the second pressing member 12 is detachably connected to the second fixing member 3.

[0031] It should be noted that a certain distance is left between the first clamping piece 11 and the second clamping piece 12 to form an accommodating space for placing the multi-phase current transformer 4, and multiple groups of tie screws 13 are connected between the first clamping piece 11 and the second clamping piece 12 to form a mounting frame 1, and the upper and lower ends of the mounting frame 1 clamp the multiple groups of tie screws 13 to limit the vertical movement of the multiple groups of tie screws 13, and each group of tie screws 13 includes multiple tie screws 13, and the multiple tie screws 13 are tightly arranged around the outer circumference of the current transformer 4 to limit the circumferential movement of the tie screws 13 of each phase.

[0032] When the above structure is applied to the installation of the multi-phase current transformer 4, the bottom end of the multi-phase current transformer 4 is arranged on the second pressing piece 12, the first pressing piece 11 is placed on the top of the multi-phase current transformer 4, each phase current transformer 4 corresponds to a group of pull screws 13, a group of pull screws 13 is composed of a plurality of pull screws 13, and the plurality of pull screws 13 are connected between the first pressing piece 11 and the second pressing piece 12, so that the multi-phase current transformer 4 is pressed between the first pressing piece 11 and the second pressing piece 12, so as to realize the vertical limit of the multi-phase current transformer 4, and each group of pull screws 13 is tightly arranged around the outer periphery of the corresponding current transformer 4, so as to realize the multi-phase current transformer 4. The current transformer 4 is limited circumferentially, so that the first clamping piece 11 and the second clamping piece 12 are connected by multiple sets of pull screws 13 to form a mounting frame 1, and the multi-phase current transformer 4 is fastened to the mounting frame 1; thereafter, the mounting frame 1 needs to be fastened inside the transformer. Specifically, the first fixing piece 2 and the second fixing piece 3 are internal structural parts of the transformer, and the two are arranged in sequence from top to bottom. The first clamping piece 11 is installed on the first fixing piece 2, and the second clamping piece 12 is installed on the second fixing piece 3, so that the multi-phase current transformer 4 is firmly installed on the transformer to meet the different design requirements of the transformer, and at the same time, the transformer can be safely transported, dropped into the box, and other operations.

[0033] Taking into account the specific structure of the first clamping member 11 and the second clamping member 12, on the basis of the above embodiment, the first clamping member 11 includes a first pressure plate member 111, a first cross beam 112 and a first connecting member 113, the first pressure plate member 111 is used to be clamped on the top end of the multi-phase current transformer 4, the first cross beam 112 is arranged on the top end surface of the first pressure plate member 111 and is connected to the first fixing member 2 through the first connecting member 113; the second clamping member 12 includes a second pressure plate member 121, a second cross beam 122 and a second connecting member 123, the second pressure plate member 121 is used to be clamped on the bottom end of the multi-phase current transformer 4, the second cross beam 122 is arranged on the bottom end surface of the second pressure plate member 121 and is connected to the second fixing member 3 through the second connecting member 123.

[0034] Specifically, the first beam 112 is fixed to the first fixing member 2 by a first connecting member 113, a second beam 122 is provided below the first beam 112, the second beam 122 is fixed to the second fixing member 3 by a second connecting member 123, the multi-phase current transformer 4 is placed between the first beam 112 and the second beam 122, and a first pressure plate member 111 is provided between the top end of the multi-phase current transformer 4 and the first beam 112, and a second pressure plate member 121 is provided between the bottom end and the second beam 122, the first beam 112, the first pressure plate member 111, the second pressure plate member 121 and the second beam 122 are connected by a plurality of pull screws 13, so that the first beam 112 and the first pressure plate member 111 generate downward pressure on the multi-phase current transformer 4, and the second beam 122 and the second pressure plate member 121 generate upward pressure on the multi-phase current transformer 4, so as to tighten the multi-phase current transformer 4. In the above structure, the first crossbeam 112 and the second crossbeam 122 are both used to support and carry the multi-phase current transformer 4, and a pressure plate component is arranged between the two and the multi-phase current transformer 4. The pressure plate component can evenly distribute the fastening force to the multi-phase current transformer 4, so that the multi-phase current transformer 4 can be stably fastened in the mounting frame 1, and at the same time, it can prevent the multi-phase current transformer 4 from moving or deforming during the fastening process.

[0035] Optionally, the first pressing plate member 111 and the second pressing plate member 121 are arranged parallel to and opposite to each other to increase the accommodation space left therebetween, which is suitable for placing the multi-phase current transformer 4 .

[0036] Considering the specific structure of the first pressure plate component 111 and the second pressure plate component 121, on the basis of the above embodiment, the first pressure plate component 111 includes a plurality of first pressure plates, which are evenly spaced along the extension direction of the first beam 112, and the second pressure plate component 121 includes a plurality of second pressure plates, which are evenly spaced along the extension direction of the second beam 122, and the plurality of second pressure plates are arranged one by one with the plurality of first pressure plates, even if the first pressure plate component 111 and the second pressure plate component 121 are both composed of pressure plates arranged at intervals. In this way, when each phase current transformer 4 is installed, the first pressure plate is arranged at the top and the second pressure plate is arranged at the bottom, and the first pressure plate and the second pressure plate are connected by a set of pull screws 13 to press each phase current transformer 4. If any phase current transformer 4 needs to be adjusted or removed, it is only necessary to remove the corresponding set of pull screws 13 and the pressure plates corresponding to the top and bottom of the current transformer 4, without removing the first pressure plate component 111 and the second pressure plate component 121 as a whole, thereby facilitating the disassembly and assembly of any phase current transformer 4.

[0037] Considering the specific structures of the first crossbeam 112 and the second crossbeam 122, on the basis of the above embodiment, the first crossbeam 112 includes two first U-shaped plates, the openings of which are arranged back to back and parallel to each other on the first pressure plate member 111, and / or the second crossbeam 122 includes two second U-shaped plates, the openings of which are arranged back to back and parallel to each other on the second pressure plate member 121. In this way, the first crossbeam 112 uses two first U-shaped plates, and / or the second crossbeam 122 uses two second U-shaped plates. Since both the first U-shaped plate and the second U-shaped plate have high strength and bearing capacity, and the first crossbeam 112 and the second crossbeam 122 in the mounting frame 1 both play the role of supporting and bearing the multi-phase current transformer 4, the bearing capacity of the mounting frame 1 can be enhanced.

[0038] Considering the specific structure of the first connecting member 113, on the basis of the above embodiment, the first connecting member 113 includes at least two U-shaped connecting plates spaced apart along the extending direction of the first cross beam 112, one end of the U-shaped connecting plate is connected to the two first U-shaped plates as a whole, and the other end is detachably connected to the first fixing member 2. In this way, since the first cross beam 112 carries a large load, the first connecting member 113 is composed of at least two U-shaped connecting plates with high strength, strong load-bearing capacity and easy operation connection, which facilitates welding of one end of the U-shaped connecting plate with the two first U-shaped plates, and the other end is provided with bolt holes and connected to the first fixing member 2 by bolts, and improves the connection stability between the fixing frame and the first fixing member 2.

[0039] Considering the specific structure of the second connecting member 123, on the basis of the above embodiment, the second connecting member 123 includes at least two bottom plates spaced apart along the extending direction of the second cross beam 122, one end of the bottom plate is detachably connected between the two second U-shaped plates, and the other end is detachably connected to the second fixing member 3. In this way, one end of the bottom plate is connected to the two second U-shaped plates by bolts, and the other end is connected to the second fixing member 3 by bolts, so that the mounting frame 1 and the second fixing member 3 can be easily disassembled.

[0040] Optionally, the first U-shaped plate, the second U-shaped plate and the U-shaped connecting plate of the present application may all be made of steel material to improve the structural stability of the mounting frame 1 .

[0041] In addition to the above-mentioned current transformer installation structure, the present invention also provides a transformer including the current transformer installation structure disclosed in the above-mentioned embodiment. For the structures of other parts of the transformer, please refer to the prior art and will not be described in detail herein.

[0042] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] The above is a detailed introduction to a transformer and a current transformer installation structure provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A current transformer installation structure, characterized in that: include: The mounting frame (1) comprises a first pressing member (11), a second pressing member (12) and a plurality of groups of tension screws (13), wherein the first pressing member (11) and the second pressing member (12) are arranged in sequence from top to bottom and are connected by the plurality of groups of tension screws (13) to form a storage space for placing a multi-phase current transformer (4), and each group of tension screws (13) comprises a plurality of tension screws (13) for being arranged closely around the outer circumference of the current transformer (4); The first fixing member (2) and the second fixing member (3) are used to be fixed inside the transformer in sequence from top to bottom; the first pressing member (11) is detachably connected to the first fixing member (2); and the second pressing member (12) is detachably connected to the second fixing member (3).

2. The current transformer installation structure according to claim 1, characterized in that: The first pressing member (11) comprises a first pressing plate member (111), a first crossbeam (112) and a first connecting member (113); the first pressing plate member (111) is used to press on the top end of the multi-phase current transformer (4); the first crossbeam (112) is arranged on the top end surface of the first pressing plate member (111) and is connected to the first fixing member (2) via the first connecting member (113); The second clamping member (12) comprises a second clamping plate member (121), a second cross beam (122) and a second connecting member (123); the second clamping plate member (121) is used to clamp the bottom end of the multi-phase current transformer (4); the second cross beam (122) is arranged on the bottom end surface of the second clamping plate member (121) and is connected to the second fixing member (3) via the second connecting member (123).

3. The current transformer installation structure according to claim 2, characterized in that: The first pressing plate component (111) and the second pressing plate component (121) are arranged parallel to and opposite to each other.

4. The current transformer installation structure according to claim 3, characterized in that: The first pressure plate component (111) includes a plurality of first pressure plates, which are evenly spaced along the extension direction of the first cross beam (112); the second pressure plate component (121) includes a plurality of second pressure plates, which are evenly spaced along the extension direction of the second cross beam (122), and the plurality of second pressure plates are arranged in a one-to-one correspondence with the plurality of first pressure plates.

5. The current transformer installation structure according to any one of claims 2 to 4, characterized in that: The first cross beam (112) includes two first U-shaped plates, the openings of which are arranged back to back and parallel to each other on the first pressure plate component (111), and / or the second cross beam (122) includes two second U-shaped plates, the openings of which are arranged back to back and parallel to each other on the second pressure plate component (121).

6. The current transformer installation structure according to claim 5, characterized in that: The first connecting member (113) comprises at least two U-shaped connecting plates spaced apart along the extension direction of the first crossbeam (112), one end of the U-shaped connecting plate being integrally connected to the two first U-shaped plates, and the other end being detachably connected to the first fixing member (2).

7. The current transformer installation structure according to claim 5, characterized in that: The second connecting member (123) comprises at least two bottom plates spaced apart along the extension direction of the second cross beam (122), one end of the bottom plate being detachably connected between the two second U-shaped plates, and the other end being detachably connected to the second fixing member (3).

8. A transformer, characterized in that: It comprises the current transformer installation structure as described in any one of claims 1 to 7.

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