CN113470954A - Mutual inductor - Google Patents
Mutual inductor Download PDFInfo
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- CN113470954A CN113470954A CN202110619675.4A CN202110619675A CN113470954A CN 113470954 A CN113470954 A CN 113470954A CN 202110619675 A CN202110619675 A CN 202110619675A CN 113470954 A CN113470954 A CN 113470954A
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- 238000004804 winding Methods 0.000 claims abstract description 60
- 210000001503 joint Anatomy 0.000 claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000010030 laminating Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 44
- 239000010959 steel Substances 0.000 claims description 44
- 239000002390 adhesive tape Substances 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention relates to a mutual inductor which comprises an open iron core, wherein a first core body and a second core body are provided with butt joint end faces which are opposite left and right so as to form a closed ring body after butt joint; the first core comprises a first vertical arm and more than two first cross arms perpendicular to the first vertical arm, the end parts of the first cross arms form butt joint end faces, at least one first cross arm is a sleeving arm, and a winding module is sleeved on the sleeving arm; the second core includes a second upright arm; the first support body and the first core fixed connection of mount, second support body and second core fixed connection, first support body and second support body fixed connection just make first core and second core butt joint, during the assembly, fix first core earlier, the second core is respectively on first support body and second support body, with winding module suit on the suit arm, then with the second core together with the second support body butt joint on first core and first support body, make the butt joint terminal surface laminating of first core and second core, butt joint convenient operation, assembly efficiency is high.
Description
Technical Field
The invention relates to a mutual inductor.
Background
For a voltage transformer, a low-voltage winding, a high-voltage winding and a high-voltage shielding cover are sequentially sleeved on an iron core, the low-voltage winding, the high-voltage winding and the high-voltage shielding cover form a winding module, wherein the low-voltage winding is positioned at the innermost side and sleeved on the iron core through a core barrel of the low-voltage winding, and the iron core is generally in a shape like a Chinese character 'kou' to form a closed loop. The butt joint assembly process of the two parts of the iron core is very critical, the excitation performance of the iron core is affected due to low butt joint assembly quality, and the requirements of the excitation characteristic and accuracy of the voltage transformer cannot be met.
At present, an assembly structure adopts a laminated core, firstly, silicon steel sheets of one half part of the laminated core are disassembled one by one, the remaining half part of the laminated core is in an open shape, after a low-voltage winding, a high-voltage winding and a high-voltage shielding cover are sleeved on the open-shaped half core, the disassembled silicon steel sheets are assembled in a butt joint mode one by one again, although the butt joint quality can be ensured by the assembly mode, the assembly process is very troublesome, and the assembly efficiency is low.
Disclosure of Invention
The invention aims to provide a mutual inductor to solve the problem that the conventional mutual inductor is inconvenient to assemble.
The technical scheme of the mutual inductor is as follows:
a transformer, comprising:
the open iron core comprises a first core body and a second core body which are oppositely arranged left and right, and the first core body and the second core body are provided with butt joint end faces which are oppositely arranged left and right so as to form a closed ring body after butt joint;
the first core comprises a first vertical arm and more than two first cross arms perpendicular to the first vertical arm, the end parts of the first cross arms form butt joint end faces for butt joint with the second core, at least one of the more than two first cross arms is a sleeving arm, and a winding module is sleeved on the sleeving arm;
the second core includes a second upright arm;
the fixing frame comprises a first frame body and a second frame body, the first frame body is fixedly connected with the first core, and the second frame body is fixedly connected with the second core;
the fixing frame further comprises a connecting structure, the first frame body and the second frame body are fixedly connected through the connecting structure, and the first core body is in butt joint with the second core body.
Has the advantages that: through the setting of opening iron core and corresponding to first core, the second core is equipped with first support body and second support body respectively, like this when the assembly, earlier with first core, the second core is fixed respectively on first support body and second support body, with winding module suit on the suit arm of first core, then with the second core together with the second support body is to detaining on first core and first support body, utilize the butt joint terminal surface of first core and second core to aim at the laminating, make first core and second core keep at the butt joint state through first support body and second support body fixed connection, whole butt joint convenient operation, assembly efficiency has been improved.
Further, the length direction of the first support body is consistent with the extending direction of the first vertical arm, the length direction of the second support body is consistent with the extending direction of the second vertical arm, and the connecting structure comprises a connecting piece extending in the butt joint direction.
Has the advantages that: the convenience is fixed first core on first support body through first grudging post, conveniently fixes the second core on the second support body through the second grudging post, is favorable to connecting stably, and carries out being connected between first support body and the second support body through the connecting piece that extends at the butt joint direction, is favorable to first core and the butt joint of second core to stabilize.
Further, the first frame body comprises two first upright columns in pair, the first core is clamped between the two first upright columns, and the first core and the two first upright columns in pair are wound and fixed through an adhesive tape; the second frame body comprises two second stand columns in pairs, the second core body is clamped between the two second stand columns, and the second core body and the two second stand columns in pairs are wound and fixed through adhesive tapes.
Has the advantages that: the first core bodies are clamped through the two first stand columns, the second core bodies are clamped through the two second stand columns, fixing is reliable, and the fixing is convenient through the winding and fixing of the adhesive tapes.
Furthermore, the connecting piece is equipped with two, and is in the position that is close to the both ends on the length direction of first support body respectively.
Has the advantages that: the first support body and the second support body are fixedly connected together by the two connecting pieces one above the other, so that the connection is stable, and the first core body and the second core body are stably butted.
Furthermore, one of the connecting pieces is a connecting screw rod which is arranged in a gap between the core cylinder of the low-voltage winding of the winding module and the sleeving arm in a penetrating mode.
Has the advantages that: by utilizing the gap between the core cylinder of the low-voltage winding of the winding module and the sleeving arm, when the winding module is sleeved on the sleeving arm, the connecting screw rod synchronously penetrates into the core cylinder of the low-voltage winding of the winding module, so that one end of the connecting screw rod can be connected with the first frame body, the other end of the connecting screw rod is connected with the second frame body, the first frame body and the second frame body are fixedly connected, and the structure is compact.
Further, the fixture comprises a positioning structure for positioning the first core relative to the first frame and/or the fixture comprises a positioning structure for positioning the second core relative to the second frame.
Has the advantages that: through location structure's setting for first core is fixed the settlement position on first support body, and the settlement position on the second support body is fixed to the second core, thereby when carrying out butt joint assembly, makes things convenient for the butt joint terminal surface of first core and second core to aim at the laminating.
Furthermore, the positioning structure is used for positioning the first core body relative to the first frame body, and comprises an upper positioning structure, a lower positioning structure, a left positioning structure and a right positioning structure; the upper side surface or the lower side surface of the connecting piece preassembled on the first frame body forms an installation reference of the upper position and the lower position of the first core to form an upper positioning structure and a lower positioning structure; the first frame body is provided with a positioning vertical face extending along the length direction of the first frame body, the positioning vertical face is perpendicular to the side face of the first core in the thickness direction, and the positioning vertical face forms an installation reference of the left position and the right position of the first core to form a left positioning structure and a right positioning structure.
Has the advantages that: the upper side face or the lower side face of the connecting piece forms an upper-lower positioning structure, the positioning vertical face on the first support body forms a left-right positioning structure, and when the first core is installed on the first support body, whether the positioning is in place or not is judged by judging whether the corresponding side face on the first core is aligned with the upper side face or the lower side face of the connecting piece or the positioning vertical face, so that the positioning is intuitive and convenient.
Furthermore, the thickness direction of the open iron core is taken as the front-back direction, the first frame body comprises two vertical angle steels which are opposite from each other in the front-back direction, the first core is clamped between the two vertical angle steels, one side surface of each vertical angle steel is attached to the side surface of the open iron core in the front-back direction, the other side surface of each vertical angle steel is used for forming a positioning vertical surface, and the positioning vertical surface is flush with the left side surface of the first vertical arm; the connecting piece of pre-assembly on first support body is horizontal angle steel, and the side of horizontal angle steel towards the top is parallel and level with the side of going up of the first xarm of suit arm below, and the side of horizontal angle steel towards the top is used for forming location structure from top to bottom, and another side is towards open core and with the laminating of open core.
Has the advantages that: the first core body is clamped through two vertical angle steels, so that the fixing is stable and the positioning is convenient; the connecting piece is formed by transverse angle steel, and has simple structure and convenient positioning.
The iron core is further provided with a binding belt, and the binding belt is used for binding the outer peripheral surface of the open iron core so as to keep the abutting end surfaces of the first core body and the second core body to be attached.
Has the advantages that: ensure the butt joint firm, improve the butt assembly quality of open core.
Further, the core barrel of the low-voltage winding of the winding module is clamped between the first frame body and the second frame body.
Has the advantages that: the mount also can fix simple structure winding module when playing the fixed action of location to the opening iron core.
Drawings
Fig. 1 is a schematic structural view of an open core of an embodiment 1 of a transformer according to the present invention;
fig. 2 is a schematic perspective view of the winding module and the open core of the present invention mounted on a fixed frame;
FIG. 3 is a front view of FIG. 2;
fig. 4 is a schematic structural view of fig. 2 with the winding module and open core removed;
FIG. 5 is a front view of FIG. 4;
fig. 6 is a schematic structural view illustrating the first core fixed to the first frame;
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a schematic view of the second core being fixed to the second frame;
FIG. 9 is a front view of FIG. 8;
FIG. 10 is a schematic view of a strap configuration;
FIG. 11 is a front view of FIG. 10;
fig. 12 is a first schematic view of the winding module being mounted on the first frame;
FIG. 13 is a front view of FIG. 12;
FIG. 14 is a second schematic view of the winding module being mounted on the first frame
Fig. 15 is a front view of fig. 14.
In the figure: 1. a first core; 11. a first vertical arm; 12. sleeving an arm; 13. a lower cross arm; 2. a second core; 21. a second vertical arm; 22. a second cross arm; 3. a high voltage shield; 4. a high voltage winding; 5. a low voltage winding; 6. a first frame body; 61. a first vertical angle iron; 7. a second frame body; 71. a second vertical angle iron; 8. a strapping tape; 81. binding the connecting part; 9. an adhesive tape; 10. transverse angle steel; 30. connecting a screw rod; 40. binding the bolts; 101. and (7) connecting the sheets.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present in the embodiments of the present invention, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the recitation of "comprising an … …" may occur without the exclusion of additional like elements present in the process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
the transformer in this embodiment is a voltage transformer, and as shown in fig. 1, fig. 2, and fig. 3, the voltage transformer includes a winding module composed of a high-voltage shielding case 3, a high-voltage winding 4, and a low-voltage winding 5, the winding module is sleeved on an open iron core, and the winding module and the open iron core are fixed on a fixing frame and fixed on a bottom plate of a cylinder of the voltage transformer through the fixing frame.
The left-right direction in fig. 3 is the left-right direction of the voltage transformer, the up-down direction in fig. 3 is the up-down direction of the voltage transformer, and the direction perpendicular to the sheet of fig. 3 is the front-back direction.
The open iron core comprises a first core body 1 and a second core body 2 which are oppositely arranged left and right, and the first core body 1 and the second core body 2 are provided with butt joint end faces which are opposite left and right so as to form a closed ring body after butt joint.
The first core 1 includes a first vertical arm 11 and two first cross arms perpendicular to the first vertical arm 11, the first vertical arm 11 extends in the vertical direction, the first cross arms extend in the left-right direction, the two first cross arms are arranged one above the other and form a U-shaped structure with the first vertical arm 11, the first cross arm on the upper side is a sleeving arm 12, the winding module is sleeved on the sleeving arm 12, and the first cross arm on the lower side is a lower cross arm 13. The ends of the nesting arm 12 and the lower crossbar 13 constitute abutment end faces for abutment with the second core 2.
The second core 2 includes a second vertical arm 21 and two second arms 22 perpendicular to the second vertical arm 21, the second vertical arm 21 extends in the vertical direction, the second arms 22 extend in the left-right direction, the two second arms 22 are arranged one above the other and form a U-shaped structure with the second vertical arm 21, and end portions of the two first arms constitute butt end surfaces for butt joint with the first core 1.
The length of the first cross arm is greater than that of the second cross arm 22, so that the first core body 1 is of a long U-shaped structure, the second core body 2 is of a short U-shaped structure, the lengths of the two first cross arms are the same, the lengths of the two second cross arms 22 are the same, and the upper butt joint and the lower butt joint of the first core body 1 and the second core body 2 correspond to each other up and down.
As shown in fig. 4, 5, 6, 7, 8, and 9, the fixing frame includes a first frame body 6 and a second frame body 7, the first frame body 6 is fixedly connected to the first core 1, the second frame body 7 is fixedly connected to the second core 2, and the fixing frame further includes a connecting structure, the first frame body 6 is fixedly connected to the second frame body 7 through the connecting structure, and the first core 1 is butted to the second core 2.
The length direction of the first frame body 6 is consistent with the extending direction of the first upright arm 11, the first frame body 6 comprises two first upright columns in pairs, the first upright columns are first upright angle steel 61, the two first upright angle steel 61 are oppositely arranged at the front side and the rear side of the first core body 1 in a front-rear direction, the first core body 1 is clamped between the two first upright angle steel 61, and the first core body 1 and the two first upright angle steel 61 in pairs are wound and fixed through adhesive tapes 9. Wherein the adhesive tape 9 is a glass fiber adhesive tape.
The length direction of the second frame body 7 is the same as the extending direction of the second upright arm 21, the second frame body 7 includes two paired second upright columns, the second upright columns are second upright angles 71, the two second upright angles 71 are located on the front and rear sides of the second core body 2 in a front-rear opposite manner, the second core body 2 is sandwiched between the two second upright angles 71, and the second core body 2 and the two paired second upright angles 71 are wound and fixed by an adhesive tape 9. Wherein the adhesive tape 9 is a glass fiber adhesive tape.
In the embodiment, the adhesive tape 9 is used for winding and fixing the first core body 1 and the second core body 2, for the fixing of the first core body 1, the adhesive tape 9 is wound around the two first vertical columns and the first vertical arm, and is wound for multiple circles, so that the fixing reliability is ensured. The same applies to the fixation of the second core 2. It should be noted that the adhesive tape 9 shown in the drawings is used for illustration, and for the sake of clarity of the overall structure, the specific winding state of the adhesive tape 9 is not shown.
The connection structure of mount includes the connecting piece that extends along left right direction, and the connecting piece is including being last connecting piece and lower connecting piece, goes up the connecting piece and is in the position that is close to the ascending both ends in length direction of first support body 6 respectively with lower connecting piece. Go up the connecting piece and be equipped with two with lower connecting piece respectively in the front and back direction relatively, it is connecting screw 30 to go up the connecting piece, lower connecting piece is the stull, the stull is horizontal angle steel 10, the both ends of horizontal angle steel 10 are equipped with respectively towards first angle steel 61, second angle steel 71's connection piece 101, be equipped with the connection perforation on the connection piece 101, first angle steel 61, be equipped with corresponding perforation on the second angle steel 71, connecting screw 30 and first support body 6 through the nut, second support body 7 is connected, through the bolt, the nut is with connecting piece and first support body 6 down, second support body 7 is connected, and then be in the same place first support body 6 and second support body 7 fixed connection.
The connecting screw 30 is inserted into the gap between the core cylinder of the low-voltage winding 5 of the winding module and the sleeving arm 12, i.e. the gap between the core cylinder of the low-voltage winding 5 of the winding module and the sleeving arm 12 is utilized to set the connecting structure, so that the structure is compact, and the first frame body 6 and the second frame body 7 are favorably and stably connected.
The mount is including being used for carrying out the location structure of fixing a position to first core 1 for first support body 6, and location structure is including location structure about and from top to bottom. Two first angle steel 61 that found have relative medial surface and with the perpendicular left surface of medial surface, the medial surface and the side laminating of first core 1 on the fore-and-aft direction, the left surface forms the location facade, the location facade constitutes the installation benchmark of position about first core 1, after first core 1 is fixed on first support body 6, location facade and the left surface parallel and level of first arm 11 that stands, location facade constitutes location structure about. Horizontal angle steel 10 is adorned in advance on first support body 6, two horizontal angle steel 10 have relative medial surface and with the medial surface vertically the side of going up of orientation top, the medial surface of horizontal angle steel 10 towards open core and with the laminating of open core, the side of going up of horizontal angle steel 10 constitutes the installation benchmark of first core 1 upper and lower position, after first core 1 is fixed on first support body 6, the side of going up of horizontal angle steel 10 and the side of going up of xarm 13 parallel and level down, the side of going up of horizontal angle steel 10 constitutes upper and lower location structure.
The fixing frame comprises a positioning structure for positioning the second core body 2 relative to the second frame body 7, the two second vertical angle steels 71 are provided with opposite inner side faces and right side faces perpendicular to the inner side faces, and the inner side faces of the two second vertical angle steels 71 are attached to the side faces of the first core body 1 in the front-back direction to form clamping positioning. The right side surface of the second riser 71 forms a mounting reference for the right-left position of the second core 2, and is positioned in the right-left direction. The vertical mounting position of the second core 2 is determined by measuring the height of the second core 2 with respect to the bottom of the second riser 71 by a measuring scale and setting the height to a predetermined value, so that the mounting position of the second core 2 corresponds to the mounting position of the first core 1.
As shown in fig. 2, 10 and 11, the strapping tape 8 is bundled on the outer circumferential surface of the open core, the strapping tape 8 is made of steel, the strapping connection parts 81 are arranged at two ends of the strapping tape 8, the two strapping connection parts 81 are used for the threading and fastening of the strapping bolt 40, and the length of the strapping tape 8 is smaller than the outer circumference of the open core, so that the strapping tape 8 can be tightly bound on the outer circumferential surface of the open core after the two ends of the strapping tape 8 are connected together, and further the butt joint end surfaces of the first core 1 and the second core 2 are tightly jointed, thereby ensuring the stable butt joint assembly and the accurate butt joint position, facilitating the butt joint operation and being beneficial to enabling the strapping tape to provide proper strapping force.
The core barrel of the low-voltage winding 5 of the winding module is clamped between the first frame body 6 and the second frame body 7, and the fixing frame can fix the winding module while positioning and fixing the open iron core.
The ascending size in the upper and lower side of first support body 6, second support body 7 is greater than the ascending size in the upper and lower side of opening iron core, first support body 6, second support body 7 have the bulge that protrudes to opening iron core top, first support body 6, second support body 7 have the installation department that protrudes to opening iron core below, first angle steel 61, the bottom of second angle steel 71 are equipped with the base angle connecting plate, the base angle connecting plate is used for forming the installation department, the mount passes through the bottom plate fixed connection of installation department and mutual-inductor barrel.
The left end of stull is located the left side of the lower xarm 13 left end of first core 1, and the stull protrudes left in the lower xarm 13 of first core 1, and when second core 2 docks with first core 1 like this, two stulls around can form guide and location, the convenient butt joint to the butt joint of second core 2.
The downside of the lower xarm 13 of first core 1 is located the below of horizontal angle steel 10, and the downside of lower xarm 13 is not sheltered from what horizontal angle steel 10 propped, conveniently detects first core 1 and whether align with second core 2 downside butt joint terminal surface through the dipperstick to confirm whether first core 1 and second core 2 aim at.
The butt joint terminal surface of first core 1 is towards the left side, and the right flank protrusion in the right side of first support body 6 of the first upright arm 11 of first core 1 when the winding module goes up the suit towards suit arm 12 like this, places back on the workstation with first support body 6 rotation 90, makes the right flank support of first upright arm 11 at the workstation, supports reliably, convenient operation.
During assembly, as shown in fig. 12, 13, 14, and 15, after the first core 1 and the second core 2 are respectively fixed at the set positions on the first frame 6 and the second frame 7 and the horizontal angle steel 10 and the connection screw 30 are pre-installed on the first frame 6, the first core 1 and the first frame 6 are rotated by 90 ° and placed on the workbench, so that the first core 1 is supported on the workbench with the opening facing upward, the low-voltage winding 5, the high-voltage winding 4, and the high-voltage shielding can 3 are sequentially sleeved on the first core 1, the core cylinder of the low-voltage winding 5 is sleeved on the sleeving arm 12, since the core cylinder of the low-voltage winding 5 is circular and the cross section of the first core 1 is square, the connection screw 30 can pass through the core cylinder of the low-voltage winding 5 through the gap between the core cylinder of the low-voltage winding 5 and the sleeving arm 12, the butt end face of the first core 1 is coated with the anaerobic adhesive, and the assembled and fixed second core 2, Second support body 7 is to detaining on first core 1 and first support body 6, and after the butt joint terminal surface of first core 1 and second core 2 was aligned, use nut fastening connection screw rod 30, use bolt, nut fastening connection horizontal angle steel 10 for first support body 6 and second support body 7 fixed connection, reuse steel strapping 8 fastens the opening iron core once more at last, ensures assembly quality. Whole butt joint convenient operation has improved assembly efficiency, moreover because earlier make first core 1 and second core 2 keep at the butt joint state with first support body 6 and 7 fixed connection of second support body, reuse strapping 8 fastening iron core, the butt joint position of opening iron core two parts can be guaranteed to the mount to when in the operation of subsequently tying up and installing the barrel of strapping 8, do not influence the butt joint position, ensure to dock assembly quality.
the present embodiment is different from embodiment 1 in that the transformer in embodiment 1 is a voltage transformer, and in the present embodiment, the transformer is a current transformer.
the present embodiment is different from embodiment 1 in that the open core in embodiment 1 is formed by butting one long U-shaped core and one short U-shaped core, whereas in the present embodiment, the open core is formed by butting two symmetrically arranged U-shaped cores. In other embodiments, the open core may be formed by a U-shaped core and a "straight" core.
Embodiment 4 of the instrument transformer in the present invention:
the present embodiment is different from embodiment 1 in that the first core in embodiment 1 is U-shaped with two first arms on top and bottom, while in this embodiment, the first core is "E" shaped with three first arms, and correspondingly, the second core is "E" shaped or "in-line".
the difference between this embodiment and embodiment 1 lies in that, in embodiment 1, the first frame body includes two first vertical columns that are opposite from front to back, and the second frame body includes two second vertical columns that are opposite from front to back, and in this embodiment, the first frame body and the second frame body are both U-shaped seats having an embedded groove, and the openings of the U-shaped seats face the open iron core, so that the open iron core is embedded in the embedded groove of the U-shaped seat.
the difference between this embodiment and embodiment 1 is that in embodiment 1, the first frame body and the first core 1 are fixed by an adhesive tape, and in this embodiment, the first frame body and the first core are fixed by an adhesive.
Example 7 of the instrument transformer in the present invention:
the difference between this embodiment and embodiment 1 is that the connection structure of the first frame body and the second frame body in embodiment 1 includes a connection screw and a horizontal angle steel, and in this embodiment, the connection structure of the first frame body and the second frame body only includes a horizontal angle steel.
the difference between this embodiment and embodiment 1 lies in that two first stand columns in embodiment 1 fix the first iron core by tape winding, and in this embodiment, on the basis that tape winding is fixed, a connecting rod is further arranged on the protruding part of the first frame body and the protruding part of the second frame body protruding from the opening, and the first frame body and the second frame body are connected by the connecting rod, so as to further ensure that the first core body is reliably clamped.
the present embodiment is different from embodiment 1 in that the up-down positioning structure for positioning the up-down position of the first core in embodiment 1 is formed by the upper side surface of the lateral angle iron, whereas the up-down positioning structure for positioning the up-down position of the first core in this embodiment is formed by the lower side surface of the lateral angle iron.
the present embodiment is different from embodiment 1 in that the left-right positioning structure for positioning the left-right position of the first core in embodiment 1 is formed by the left side surface of the first standing angle steel, whereas in this embodiment, the inner side surface of the first standing angle steel is provided with a rib protruding inward, and the baffle is used to form the left-right positioning structure for positioning the left-right position of the first core.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A transformer, comprising:
the open iron core comprises a first core body and a second core body which are oppositely arranged left and right, and the first core body and the second core body are provided with butt joint end faces which are oppositely arranged left and right so as to form a closed ring body after butt joint;
the first core comprises a first vertical arm and more than two first cross arms perpendicular to the first vertical arm, the end parts of the first cross arms form butt joint end faces for butt joint with the second core, at least one of the more than two first cross arms is a sleeving arm, and a winding module is sleeved on the sleeving arm;
the second core includes a second upright arm;
the fixing frame comprises a first frame body and a second frame body, the first frame body is fixedly connected with the first core, and the second frame body is fixedly connected with the second core;
the fixing frame further comprises a connecting structure, the first frame body and the second frame body are fixedly connected through the connecting structure, and the first core body is in butt joint with the second core body.
2. The instrument transformer of claim 1, wherein the length direction of the first body coincides with the extension direction of the first arm, the length direction of the second body coincides with the extension direction of the second arm, and the connection structure comprises a connection member extending in the butting direction.
3. The mutual inductor according to claim 2, wherein the first frame body comprises two first columns in pairs, the first core is sandwiched between the two first columns, and the first core and the two first columns in pairs are fixed by winding an adhesive tape; the second frame body comprises two second stand columns in pairs, the second core body is clamped between the two second stand columns, and the second core body and the two second stand columns in pairs are wound and fixed through adhesive tapes.
4. The instrument transformer as claimed in claim 2, wherein there are two connecting members respectively located near both ends of the first frame body in the longitudinal direction.
5. The transformer according to claim 4, wherein one of the connection members is a connection screw inserted into a gap between the core barrel and the sleeving arm of the low voltage winding of the winding module.
6. A transformer according to claim 2, characterised in that the holder comprises positioning means for positioning the first core relative to the first frame and/or the holder comprises positioning means for positioning the second core relative to the second frame.
7. The mutual inductor according to claim 6, wherein the positioning structure is used for positioning the first core body relative to the first frame body, and the positioning structure comprises an upper and lower positioning structure and a left and right positioning structure; the upper side surface or the lower side surface of the connecting piece preassembled on the first frame body forms an installation reference of the upper position and the lower position of the first core to form an upper positioning structure and a lower positioning structure; the first frame body is provided with a positioning vertical face extending along the length direction of the first frame body, the positioning vertical face is perpendicular to the side face of the first core in the thickness direction, and the positioning vertical face forms an installation reference of the left position and the right position of the first core to form a left positioning structure and a right positioning structure.
8. The mutual inductor according to claim 7, wherein the thickness direction of the open core is a front-rear direction, the first frame body comprises two vertical angles which are opposite to each other in a front-rear direction, the first core is sandwiched between the two vertical angles, one side surface of each vertical angle is attached to a side surface of the open core in the front-rear direction, the other side surface of each vertical angle is used for forming a positioning vertical surface, and the positioning vertical surface is flush with the left side surface of the first vertical arm; the connecting piece of pre-assembly on first support body is horizontal angle steel, and the side of horizontal angle steel towards the top is parallel and level with the side of going up of the first xarm of suit arm below, and the side of horizontal angle steel towards the top is used for forming location structure from top to bottom, and another side is towards open core and with the laminating of open core.
9. The transformer according to any one of claims 1 to 8, further comprising a binding tape for binding on an outer peripheral surface of the open core to keep abutting end surfaces of the first core and the second core in abutment.
10. A transformer according to any one of claims 1 to 8, characterised in that the core barrel of the low voltage winding of the winding module is sandwiched between the first and second frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619675.4A CN113470954A (en) | 2021-06-03 | 2021-06-03 | Mutual inductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619675.4A CN113470954A (en) | 2021-06-03 | 2021-06-03 | Mutual inductor |
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| CN113470954A true CN113470954A (en) | 2021-10-01 |
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| CN202110619675.4A Pending CN113470954A (en) | 2021-06-03 | 2021-06-03 | Mutual inductor |
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Application publication date: 20211001 |