CN214123673U - Wiring board and transformer bushing - Google Patents
Wiring board and transformer bushing Download PDFInfo
- Publication number
- CN214123673U CN214123673U CN202023200235.5U CN202023200235U CN214123673U CN 214123673 U CN214123673 U CN 214123673U CN 202023200235 U CN202023200235 U CN 202023200235U CN 214123673 U CN214123673 U CN 214123673U
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- wire pressing
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- pressing plate
- wiring board
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Abstract
The utility model relates to a the utility model provides a wiring board and transformer bushing, the wiring board includes: the wire pressing plate is flat and is provided with at least two wire pressing bolt through holes; the fixed hoop is a cylinder, is connected with the line pressing plate into a whole and is positioned at one end of the line pressing plate, the side surface of the fixed hoop is provided with a notch which penetrates through the upper part and the lower part, and the inner side of the fixed hoop is provided with internal threads; the otic placode is two, is located the both sides of the breach of fixed hoop respectively, is equipped with two at least fastening bolt holes on every otic placode. The utility model provides a wiring board makes transformer outgoing line sleeve pipe and pin connection more reliable, and contact resistance is little, and electric conductivity is better.
Description
Technical Field
The utility model relates to an electric power tech field, specificly relate to a power transformer wire outgoing sleeve connecting board and transformer bushing.
Background
The existing transformer is one of the most important devices in the power system as a power device for converting, transmitting and distributing electric energy in the power system, and is of great importance to the safe operation of the power system. The transformer bushing is a main insulation device outside the transformer box, and the outgoing lines of the transformer winding must penetrate through the insulation bushing to insulate the outgoing lines and the outgoing lines from the transformer shell, and meanwhile, the transformer bushing plays a role in fixing the outgoing lines.
In a power transformer system, a transformer bushing is connected to a high-voltage lead through a terminal block, and the terminal block is used as an important part for connecting other external parts and the bushing, plays roles in contact current guiding, mechanical tensile strength and the like, and is an important part in a transformer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a technical problem that power transformer bushing line connection board connection reliability is not high among the prior art, providing a wiring board, can make transformer bushing line and pin connection more reliable, contact resistance is little, and electric conductivity is better.
In order to achieve the above object, the utility model provides a wiring board for transformer bushing's high-voltage connection, include: the wire pressing plate is flat and is provided with at least two wire pressing bolt through holes; the fixed hoop is a cylinder, is connected with the line pressing plate into a whole and is positioned at one end of the line pressing plate, the side surface of the fixed hoop is provided with a notch which penetrates through the upper part and the lower part, and the inner side of the fixed hoop is provided with internal threads; the otic placode is two, is located the both sides of the breach of fixed hoop respectively, is equipped with two at least fastening bolt holes on every otic placode.
Preferably, the inner side of the ear plate is arranged in an S shape; the hole for the fastening bolt on one lug plate is a through hole, and the hole for the fastening bolt on the other lug plate is a threaded hole.
Preferably, the wiring board is made of red copper, brass or aluminum alloy, and the surface and the inner hole are plated with tin, silver or nickel.
Preferably, the inner side of the fixing hoop is provided with an internal thread matched with the external thread of the terminal at the top end of the transformer bushing.
The utility model provides a wiring board, fixed hoop inboard set up internal thread and transformer bushing top terminal external screw thread connection more reliable, and the otic placode inboard is the setting of S type simultaneously and makes fixed hoop more reliable. The utility model provides a wiring board makes transformer outgoing line sleeve pipe and pin connection more reliable, and contact resistance is little, and electric conductivity is better.
The utility model also provides a transformer bushing, include: a wiring board and a wiring terminal; the patch panel includes: the wire pressing plate is flat and is provided with at least two wire pressing bolt through holes; the fixed hoop is a cylinder, is connected with the line pressing plate into a whole and is positioned at one end of the line pressing plate, the side surface of the fixed hoop is provided with a notch which penetrates through the upper part and the lower part, and the inner side of the fixed hoop is provided with internal threads; the two lug plates are respectively positioned at two sides of the notch of the fixed hoop, and each lug plate is provided with at least two fastening bolt holes; the inner side of the fixed hoop is provided with an internal thread which is matched with the external thread of the wiring terminal at the top end of the transformer bushing.
Preferably, the inner side of the ear plate is arranged in an S shape; the hole for the fastening bolt on one lug plate is a through hole, and the hole for the fastening bolt on the other lug plate is a threaded hole.
Preferably, the wiring board is made of red copper, brass or aluminum alloy, and the surface and the inner hole are plated with tin, silver or nickel.
The transformer bushing provided by the utility model has the advantages that the inner side of the fixed hoop is provided with the internal thread which is more reliable to be connected with the external thread of the terminal at the top end of the transformer bushing, and the inner side of the ear plate is arranged in an S shape, so that the fixed hoop is more reliable; the utility model provides a transformer bushing makes transformer outgoing line sleeve pipe and pin connection more reliable, and contact resistance is little, and electric conductivity is better.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of a prior art wiring board structure;
FIG. 2 is a schematic view of a prior art terminal block and bushing terminal connection;
FIG. 3 is a schematic diagram of the wiring board structure of the present invention;
fig. 4 is a schematic view of the connection between the wiring board and the bushing terminal of the present invention.
Detailed Description
The high-voltage wiring board of the transformer bushing is actually a transition part for connecting the bushing with the outside. The general material of the connecting terminal comprises aluminum, copper, stainless steel and the like, and other novel materials or any appropriate materials can be selected. The aluminum material is the aluminum material with better conductive effect, the copper material generally comprises red copper and brass, and the stainless steel is less in use. The panel of the wiring board is provided with bolt through holes (mounting holes) for mounting bolts, and the mounting holes have various specifications such as 2, 4, 6 and the like. The diameter size of the mounting hole is not larger than the nominal diameter of the bolt by 2mm, and the position of the mounting hole is kept symmetrical on the center line of the plate surface or with the center line as far as possible, so that stable and reliable contact of mounting is facilitated.
As shown in fig. 1, in the prior art, a terminal block of a transformer bushing includes: the wire pressing plate comprises a wire pressing plate 1, a fixing hoop 2 and an ear plate 3, wherein a plurality of wire pressing bolt through holes 11 are formed in the wire pressing plate 1; the fixed hoop 2 is a cylinder, is connected with the line pressing plate 1 into a whole and is positioned at one end of the line pressing plate 1, and the side surface of the fixed hoop 2 is provided with a notch 22 which penetrates through the upper part and the lower part; the two lug plates 3 are respectively positioned at two sides of the gap of the fixed hoop 2, and the lug plates 3 are provided with fastening bolt holes 31.
As shown in fig. 2, in the prior art, the terminal block is sleeved on the terminal 4 at the top end of the transformer bushing through a fixing hoop and connected with the terminal 4, and the fixing hoop is fastened on the terminal 4 through a fastening bolt hole 32 in a bolt hole 31 on the lug plate 3.
In a power transformer system, the connection reliability directly affects the loss of transformer operation and the operation heating condition. The utility model relates to a the utility model provides a wiring board and transformer bushing for transformer outgoing line sleeve pipe and pin connection are more reliable.
Example one
Fig. 3 is a schematic diagram of a wiring board structure according to an embodiment of the present invention. As shown in fig. 3, the wiring board 5 of the present embodiment includes: the wire pressing plate comprises a wire pressing plate 1, a fixing hoop 2 and an ear plate 3; the wire pressing plate 1 is flat and is provided with at least two wire pressing bolt through holes 11; in this embodiment, in fig. 2, the number of the bolt through holes 11 is 4, and actually, the current of the outgoing line is different, and the number of the mounting holes is 2, 4, 6, 8, and the like.
The fixed hoop 2 is a cylinder, is connected with the line pressing plate 1 into a whole and is positioned at one end of the line pressing plate 1, the side surface of the fixed hoop 2 is provided with a notch 21 which penetrates through the upper part and the lower part, and the inner side of the fixed hoop 2 is provided with an internal thread 22; the two ear plates 3 are respectively positioned at two sides of the notch 21 of the fixed hoop 2, and each ear plate 3 is provided with at least two fastening bolt holes 31.
The inner side of the fixed hoop 2 is provided with an internal thread 22 which is matched with the external thread of the terminal 4 at the top end of the transformer bushing; in the present embodiment, the internal thread 22 is M42 × 3.
Preferably, the inner side of the ear plate 3 is provided with an S-shaped arrangement 32; the hole for the fastening bolt in one lug plate 3 is a through hole 311, and the hole for the fastening bolt in the other lug plate is a screw hole 312.
Those skilled in the art will appreciate that the bolt through hole (mounting hole) for mounting the bolt is typically sized to have a diameter greater than the nominal diameter of the bolt by 0.5-2 mm.
Preferably, the wiring board is made of red copper, brass or aluminum alloy, and the surface and the inner hole are plated with tin, silver or nickel, so that the corrosion resistance of the wiring board can be improved.
Preferably, the utility model provides a wiring board, fixed hoop inboard set up the internal thread and transformer bushing top terminal external screw thread connection more reliable, and the otic placode inboard is the S type setting simultaneously and makes fixed hoop more reliable. The utility model provides a wiring board makes transformer outgoing line sleeve pipe and pin connection more reliable, and contact resistance is little, and electric conductivity is better.
Example two
The embodiment of the utility model provides a second still provides a transformer bushing. As shown in fig. 4, the transformer bushing includes: a wiring board 5, a wiring terminal 4; the wiring board 5 includes: the wire pressing plate comprises a wire pressing plate 1, a fixing hoop 2 and an ear plate 3, wherein the wire pressing plate 1 is flat and is provided with at least two wire pressing bolt through holes 11; the fixing hoop 2 is a cylinder, is connected with the line pressing plate 1 into a whole and is positioned at one end of the line pressing plate, the side surface of the fixing hoop 2 is provided with a through upper and lower gap 21, and the inner side of the fixing hoop 2 is provided with an internal thread 22; in the present embodiment, the internal thread 22 is M42 × 3.
The two ear plates 3 are respectively positioned at two sides of the notch 21 of the fixed hoop 2, and each ear plate 3 is provided with at least two fastening bolt holes 31; the inner side of the fixed hoop is provided with an internal thread 22 which is matched with an external thread 41 of the terminal 4 at the top end of the transformer bushing.
Preferably, the inner side of the ear plate 3 is provided with an S-shaped arrangement 32; the hole for the fastening bolt in one lug plate 3 is a through hole 311, and the hole for the fastening bolt in the other lug plate is a screw hole 312.
Preferably, the wiring board 5 is made of red copper, brass or aluminum alloy, and the surface and the inner hole are plated with tin, silver or nickel, so that the corrosion resistance of the wiring board can be improved.
The transformer bushing provided by the utility model has the advantages that the inner side of the fixed hoop is provided with the internal thread which is more reliable to be connected with the external thread of the terminal at the top end of the transformer bushing, and the inner side of the ear plate is arranged in an S shape, so that the fixed hoop is more reliable; the utility model provides a transformer bushing makes transformer outgoing line sleeve pipe and pin connection more reliable, and contact resistance is little, and electric conductivity is better.
Claims (7)
1. A terminal block for high voltage wiring of a transformer bushing, comprising: the wire pressing plate is flat and provided with at least two wire pressing bolt through holes; the fixing hoop is a cylinder, is connected with the wire pressing plate into a whole and is positioned at one end of the wire pressing plate, a through upper and lower gap is formed in the side surface of the fixing hoop, and internal threads are arranged on the inner side of the fixing hoop; the ear plate is two, is located respectively the both sides of the breach of fixed hoop are equipped with two at least fastening bolt holes on every ear plate.
2. The patch panel of claim 1, wherein said ear panels are arranged in an S-shape on the inside; the hole for the fastening bolt on one lug plate is a through hole, and the hole for the fastening bolt on the other lug plate is a threaded hole.
3. The terminal block of claim 1, wherein the terminal block is made of copper, brass or aluminum alloy, and the surface and inner bore are plated with tin, silver or nickel.
4. The terminal block of claim 1, wherein the internal threads provided on the inside of the securing collar mate with external threads of a transformer bushing top terminal.
5. A transformer bushing, comprising: a wiring board and a wiring terminal; the wiring board includes: the wire pressing plate is flat and provided with at least two wire pressing bolt through holes; the fixing hoop is a cylinder, is connected with the wire pressing plate into a whole and is positioned at one end of the wire pressing plate, a through upper and lower gap is formed in the side surface of the fixing hoop, and an internal thread matched with an external thread of a wiring terminal at the top end of the transformer bushing is arranged on the inner side of the fixing hoop; the ear plate is two, is located respectively the both sides of the breach of fixed hoop are equipped with two at least fastening bolt holes on every ear plate.
6. The transformer bushing of claim 5, wherein the inside of the ear plate is S-shaped; the hole for the fastening bolt on one lug plate is a through hole, and the hole for the fastening bolt on the other lug plate is a threaded hole.
7. The transformer bushing of claim 5, wherein the terminal plate is made of red copper, brass or aluminum alloy, and the surface and inner bore are plated with tin, silver or nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023200235.5U CN214123673U (en) | 2020-12-28 | 2020-12-28 | Wiring board and transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023200235.5U CN214123673U (en) | 2020-12-28 | 2020-12-28 | Wiring board and transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214123673U true CN214123673U (en) | 2021-09-03 |
Family
ID=77515048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023200235.5U Active CN214123673U (en) | 2020-12-28 | 2020-12-28 | Wiring board and transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214123673U (en) |
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2020
- 2020-12-28 CN CN202023200235.5U patent/CN214123673U/en active Active
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