CN110797178A - Current transformer primary winding fastening device - Google Patents
Current transformer primary winding fastening device Download PDFInfo
- Publication number
- CN110797178A CN110797178A CN201911050111.2A CN201911050111A CN110797178A CN 110797178 A CN110797178 A CN 110797178A CN 201911050111 A CN201911050111 A CN 201911050111A CN 110797178 A CN110797178 A CN 110797178A
- Authority
- CN
- China
- Prior art keywords
- primary winding
- internal threaded
- threaded hole
- embedded hole
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
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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
- H01F27/28—Coils; Windings; Conductive connections
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a fastening device for a primary winding of a current transformer, which comprises an embedded hole a arranged at the lower part of a connecting plate a, and an embedded hole b arranged at the lower part of a connecting plate b; one end of the conductive rod of the primary winding copper processing piece is provided with an internal threaded hole a, the other end of the conductive rod is provided with an internal threaded hole b, the internal threaded hole a is communicated with the embedded hole a, and the internal threaded hole b is communicated with the embedded hole b; the conductive grease is uniformly coated on the contact surfaces of the conductive rod of the primary winding copper processing piece, the connecting plate a and the connecting plate b, the inner hexagonal countersunk head screw a is sleeved in the S-shaped double-sided self-locking washer a and penetrates through the embedded hole a and the internal threaded hole a to be fixedly connected, and the inner hexagonal countersunk head screw b is sleeved in the S-shaped double-sided self-locking washer b and penetrates through the embedded hole b and the internal threaded hole b to be fixedly connected. This application changes the welding fastening into screw fastening, and the screw fastening mode preparation is convenient to effectual production efficiency that has improved, and improve operational environment.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a primary winding fastening device of a current transformer.
Background
The current transformer primary winding is fastened by welding, but the problems of false welding, cold welding and the like are easily caused during welding, the working environment is poor, the working efficiency is low, and the problem cannot be effectively solved all the time. The main reason lies in the false welding that appears during the welding and the rosin joint problem, leads to current transformer primary winding fastening to appear the flaw, causes the electric conductivity rate difference of current transformer primary winding at last, and the resistance risees, and the temperature of primary winding is too high during the use, and current transformer explodes easily, and this has increased the defective rate of current transformer product.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a fastening device for a primary winding of a current transformer, which aims to solve the problems that when the welding is performed to produce the false welding and the false welding, the conductivity of the primary winding of the current transformer is poor, the resistance is increased, and the temperature of the primary winding of the current transformer is too high during the use.
In order to achieve the purpose, the technical scheme of the application is as follows: a primary winding fastening device of a current transformer comprises a wiring board, a connecting board a, a connecting board b, a primary winding copper workpiece conducting rod and conducting grease, wherein the connecting board a and the connecting board b are arranged oppositely; one end of the conductive rod of the primary winding copper processing piece is provided with an internal threaded hole a, the other end of the conductive rod is provided with an internal threaded hole b, the internal threaded hole a is communicated with the embedded hole a, and the internal threaded hole b is communicated with the embedded hole b; the conductive grease is uniformly coated on the contact surfaces of the conductive rod of the primary winding copper processing piece, the connecting plate a and the connecting plate b, the inner hexagonal countersunk head screw a is sleeved in the S-shaped double-sided self-locking washer a and penetrates through the embedded hole a and the internal threaded hole a to be fixedly connected, and the inner hexagonal countersunk head screw b is sleeved in the S-shaped double-sided self-locking washer b and penetrates through the embedded hole b and the internal threaded hole b to be fixedly connected.
Furthermore, the contact surfaces of the conducting rod of the primary winding copper processing piece, the connecting plate a and the connecting plate b are smooth and flat.
Furthermore, the inner hexagon countersunk head screw a and the inner hexagon countersunk head screw b are all full threads.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects:
1. the preparation is convenient, improve production efficiency, improve operational environment: this application changes the welding fastening into screw fastening, and the screw fastening mode preparation is convenient to effectual production efficiency that has improved, and improve operational environment.
2. Improving the conductivity of the primary winding: the conductive grease is conductive lubricating grease which is prepared by refining synthetic base oil, a conductive carbon black thickening agent and an additive, enhances the lubricating property of a contact part, reduces the abrasion, can effectively lead out static electricity, has good compatibility with metal, has no corrosivity on metal materials, and effectively improves the conductivity of a primary winding.
3. Firm, reliable: when the hexagon socket countersunk head screw and the S-shaped double-sided self-locking washer fasten the connecting plate a, the connecting plate b and the primary winding copper workpiece conducting rod together, compared with other connecting modes, the connecting device is convenient to assemble and disassemble, is beneficial to maintenance, can increase pretightening force to prevent loosening, cannot cause phase change of material components at the joint, and further ensures that the primary winding of the current transformer is fastened more stably and reliably.
Drawings
FIG. 1 is a schematic structural view of a primary winding fastening device of a current transformer;
the sequence numbers in the figures illustrate: 1. the connection board a, 2, the conductive rod of the primary winding copper processing piece, 3, the hexagon socket countersunk head screw a, 4, the S-shaped double-sided self-locking washer a, 5, the conductive grease, 6, the wiring board.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1, the embodiment provides a primary winding fastening device for a current transformer, which includes two wiring boards, a connecting board a, a connecting board b, a primary winding copper processing piece conducting rod, two hexagon socket head cap screws (full thread, 10.9 level), two S-shaped double-sided self-locking washers, and conductive grease, wherein the lower portions of the connecting board a and the connecting board b are provided with embedded holes, the two ends of the primary winding copper processing piece conducting rod are provided with internal thread holes, the conductive grease is uniformly coated on the contact surfaces of the connecting board a, the connecting board b and the primary winding copper processing piece conducting rod, and the hexagon socket head cap screws (full thread, 10.9 level) are sleeved on the S-shaped double-sided self-locking washers and penetrate through the embedded holes and the internal thread holes to fasten the connecting board a, the connecting board b and the primary winding. Therefore, the original electrical welding connection is replaced, the fastening mode improves the production efficiency to a great extent, the operation is simple and fast, and the working environment is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (3)
1. A fastening device for a primary winding of a current transformer is characterized by comprising a wiring board, a connecting board a, a connecting board b, a conductive rod of a primary winding copper workpiece and conductive grease, wherein the connecting board a and the connecting board b are oppositely arranged, the top parts of the connecting board a and the connecting board b are respectively provided with the wiring board, the lower part of the connecting board a is provided with an embedded hole a, and the lower part of the connecting board b is provided with an embedded hole b; one end of the conductive rod of the primary winding copper processing piece is provided with an internal threaded hole a, the other end of the conductive rod is provided with an internal threaded hole b, the internal threaded hole a is communicated with the embedded hole a, and the internal threaded hole b is communicated with the embedded hole b; the conductive grease is uniformly coated on the contact surfaces of the conductive rod of the primary winding copper processing piece, the connecting plate a and the connecting plate b, the inner hexagonal countersunk head screw a is sleeved in the S-shaped double-sided self-locking washer a and penetrates through the embedded hole a and the internal threaded hole a to be fixedly connected, and the inner hexagonal countersunk head screw b is sleeved in the S-shaped double-sided self-locking washer b and penetrates through the embedded hole b and the internal threaded hole b to be fixedly connected.
2. The primary winding fastening device of the current transformer according to claim 1, wherein the contact surfaces of the conducting rod of the primary winding copper workpiece and the connecting plates a and b are smooth and flat.
3. The primary winding fastening device of the current transformer as claimed in claim 1, wherein the socket head cap screw a and the socket head cap screw b are both full threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050111.2A CN110797178A (en) | 2019-10-31 | 2019-10-31 | Current transformer primary winding fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050111.2A CN110797178A (en) | 2019-10-31 | 2019-10-31 | Current transformer primary winding fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110797178A true CN110797178A (en) | 2020-02-14 |
Family
ID=69442260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911050111.2A Pending CN110797178A (en) | 2019-10-31 | 2019-10-31 | Current transformer primary winding fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110797178A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422939A (en) * | 2000-11-29 | 2003-06-11 | 日本精工株式会社 | Conductive lubricating grease and rolling device filled with same |
| CN102074336A (en) * | 2010-12-09 | 2011-05-25 | 天津市百利纽泰克电气科技有限公司 | Heavy-current non-boss primary conductor of transformer |
| CN203733611U (en) * | 2014-01-13 | 2014-07-23 | 国家电网公司 | Primary side assembly of current transformer and current transformer with primary side assembly |
| CN205140736U (en) * | 2015-11-30 | 2016-04-06 | 中国西电电气股份有限公司 | Inverted type current transformer's primary winding structure |
| CN105602678A (en) * | 2015-11-23 | 2016-05-25 | 广西大学 | Castor oil-based grease composition for electric contact |
| CN206036000U (en) * | 2016-08-31 | 2017-03-22 | 大连第一互感器有限责任公司 | Embedded nut for electric mounting |
-
2019
- 2019-10-31 CN CN201911050111.2A patent/CN110797178A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422939A (en) * | 2000-11-29 | 2003-06-11 | 日本精工株式会社 | Conductive lubricating grease and rolling device filled with same |
| CN102074336A (en) * | 2010-12-09 | 2011-05-25 | 天津市百利纽泰克电气科技有限公司 | Heavy-current non-boss primary conductor of transformer |
| CN203733611U (en) * | 2014-01-13 | 2014-07-23 | 国家电网公司 | Primary side assembly of current transformer and current transformer with primary side assembly |
| CN105602678A (en) * | 2015-11-23 | 2016-05-25 | 广西大学 | Castor oil-based grease composition for electric contact |
| CN205140736U (en) * | 2015-11-30 | 2016-04-06 | 中国西电电气股份有限公司 | Inverted type current transformer's primary winding structure |
| CN206036000U (en) * | 2016-08-31 | 2017-03-22 | 大连第一互感器有限责任公司 | Embedded nut for electric mounting |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200214 |
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| RJ01 | Rejection of invention patent application after publication |