CN103187150B - The primary connection terminal of high-tension current inductor and installation method thereof - Google Patents
The primary connection terminal of high-tension current inductor and installation method thereof Download PDFInfo
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- CN103187150B CN103187150B CN201310130816.1A CN201310130816A CN103187150B CN 103187150 B CN103187150 B CN 103187150B CN 201310130816 A CN201310130816 A CN 201310130816A CN 103187150 B CN103187150 B CN 103187150B
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- 238000009434 installation Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000012634 fragment Substances 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000011900 installation process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The primary connection terminal of high-tension current inductor provided by the invention and installation method thereof, including the wiring cylinder being connected with winding of current transformer with by the conducting rod of hot charge practice with described wiring cylinder interference fit；The primary connection terminal of high-tension current inductor provided by the invention and installation method thereof, conducting rod and wiring cylinder adopt hot charge practice to realize interference fit, realize the seamless link of conducting rod and wiring cylinder, reduce the contact resistance between conducting rod and wiring cylinder, the caloric value of binding post is few, effectively reduces energy loss；Installation process will not produce metal fragment and other pollutant, and overall structure does not have other connectors (such as screw bolt and nut), it is possible to effectively prevent the generation of corona phenomenon。
Description
Technical field
The present invention relates to the electric device of a kind of high pressure power transmission and distribution, particularly relate to primary connection terminal and the installation method thereof of a kind of high-tension current inductor。
Background technology
The primary connection terminal of traditional transformer includes conducting rod and wiring cylinder, general structure is axially to be provided with the opening for the 4-6mm making the internal diameter of wiring cylinder increase on wiring cylinder, it is inserted in wiring cylinder by conducting rod to then pass through screw bolt and nut to coordinate conducting rod is clamped, this structure and connected mode, gap is yet suffered between wiring cylinder and conducting rod, external granule and steam are easily accessible in wiring cylinder, the electric conductivity making primary connection terminal declines, and corona phenomenon easily occurs, thus causing that the insulation of transformer is aging rapidly, reduce the service life of transformer, and the contact resistance making wiring cylinder and conducting rod increases, caloric value makes greatly electric energy power attenuation big, so that the certainty of measurement measuring instrument declines。
The document that application number is 98211479.6 discloses a kind of terminal of high-tension current inductor, including conducting rod and busbar, the shaft part of conducting rod adopts interference fit to be connected with the connecting hole of busbar, by moulds of industrial equipment and high pressure machine, conducting rod is pressed in the connecting hole of busbar, and on conducting rod, it is provided with the stiffening device being fixedly arranged on busbar by conducting rod, this structure, process of press in can produce a small amount of metal fragment, these metal fragments can not be fully erased, and due to the effect of high pressure, conducting rod and busbar is easily made to deform upon and produce metal fragment, therefore there is space and metal fragment between conducting rod and the busbar of a terminal, corona cannot be avoided the occurrence of, and in use the steam in air enters in the space between conducting rod and busbar, the electric conductivity of terminal declines, the certainty of measurement of instrument is measured in impact。
Therefore, need to propose a kind of new high-tension current inductor primary connection terminal, conducting rod and wiring cylinder can be enable effectively to make the contact surface of conducting rod and wiring cylinder combine closely, realize substantially seamless connection, make the conducting rod contact surface with wiring cylinder without metal fragment and other pollutant, effectively prevent the generation of corona phenomenon, it is possible to ensure the electric conductivity of binding post, thus ensureing to measure the certainty of measurement of instrument, extend the service life of transformer。
Summary of the invention
In view of this, the primary connection terminal of a kind of high-tension current inductor provided by the invention, conducting rod and wiring cylinder can be enable effectively to make the contact surface of conducting rod and wiring cylinder combine closely, realize substantially seamless connection, make the conducting rod contact surface with wiring cylinder without metal fragment and other pollutant, effectively prevent the generation of corona phenomenon, it is possible to ensure the electric conductivity of binding post, thus ensureing to measure the certainty of measurement of instrument, extend the service life of transformer。
The primary connection terminal of high-tension current inductor provided by the invention, including the wiring cylinder being connected with winding of current transformer with by the conducting rod of hot charge practice with described wiring cylinder interference fit；
Further, described wiring cylinder is 0.3-0.5% with the magnitude of interference of conducting rod；
Further, the end face of the installation end of described conducting rod stretches out described wiring cylinder；
Further, described conducting rod and wiring cylinder adopt tin plating red copper to make。
The invention also discloses the installation method of the primary connection terminal of a kind of high-tension current inductor, described installation method comprises the steps:
A. conducting rod and wiring cylinder to primary connection terminal are cleaned；
B. described wiring cylinder is heated, described wiring cylinder is heated to design temperature；
C. described conducting rod is coaxially pressed into described wiring cylinder；
D. described conducting rod and wiring cylinder cooling are made；
Further, in step b, described wiring cylinder is that zinc-plated red copper material is made, and described wiring cylinder is heated, and wiring cylinder was heated to ceiling temperature 800 DEG C in 0.5-2 minute, and described wiring cylinder carries out when 800 DEG C the insulation of 0.5-1 minute；
Further, step c also includes step e: after described wiring cylinder heating to design temperature, keep the cleaning of wiring cylinder and conducting rod；
Further, in step c, the installation end end face of described conducting rod when being pressed into described conducting rod, is made to stretch out wiring cylinder；
Further, in described step d, when making described conducting rod and wiring cylinder cooling, conducting rod and wiring cylinder are incubated and are made conducting rod and described wiring cylinder cool down in nitrogen environment。
Beneficial effects of the present invention: the primary connection terminal of high-tension current inductor provided by the invention and installation method thereof, conducting rod and wiring cylinder adopt hot charge practice to realize interference fit, realize conducting rod to be connected with the substantially seamless of wiring cylinder, it is greatly reduced the contact resistance between conducting rod and wiring cylinder, the caloric value of binding post is few, effectively reduces energy loss；Installation process will not produce metal fragment and other pollutant, and overall structure does not have other connectors (such as screw bolt and nut), it is possible to effectively prevent the generation of corona phenomenon；The interference fit of conducting rod and wiring cylinder makes compact overall structure, it is possible to strengthens the stress of contact surface, is effectively improved the tension of binding post, antitorque intensity；Can effectively prevent the harmful gass such as steam and pollutant from entering into the contact surface of conducting rod and wiring cylinder in using, ensure the electric conductivity of binding post, ensure the basic lossless transmission of electric energy and measure the measuring accuracy of instrument, and extend the service life of current transformer, and make binding post affected by environment little, strong adaptability。
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of the present invention。
Fig. 2 is the structural representation of the wiring cylinder of the present invention。
Detailed description of the invention
Fig. 1 is the structural representation of the present invention, Fig. 2 is the structural representation of the wiring cylinder of the present invention, as shown in the figure, the primary connection terminal of high-tension current inductor provided by the invention, including the wiring cylinder 2 being connected with winding of current transformer with by the conducting rod 1 of hot charge practice with described wiring cylinder interference fit；The primary connection terminal of high-tension current inductor provided by the invention and installation method thereof, conducting rod and wiring cylinder adopt hot charge practice to realize interference fit, realize conducting rod to be connected with the substantially seamless of wiring cylinder, reduce the contact resistance between conducting rod and wiring cylinder, the caloric value of binding post is few, effectively reduces energy loss；Installation process will not produce metal fragment and other pollutant, and overall structure does not have other connectors (such as screw bolt and nut), it is possible to effectively prevent the generation of corona phenomenon。
In the present embodiment, the magnitude of interference of described wiring cylinder 2 and conducting rod 1 is 0.3-0.5%, the magnitude of interference of this scope, ensure to realize between described wiring cylinder and conducting rod the stress of seamless link and contact surface between the two, to strengthen the tension of binding post, antitorque intensity, the magnitude of interference is avoided to make too greatly the bulk strength of binding post reduce, avoid wiring cylinder to deform upon and affect electric conductivity, also avoid the too little contact causing contact surface of the magnitude of interference insufficient and affect the stress of electric conductivity and contact surface。
In the present embodiment, the end face of the installation end of described conducting rod 1 stretches out described wiring cylinder 2；Described conducting rod is pressed into from one end of wiring cylinder, the installation end end face of conducting rod 1 stretches out from the other end of wiring cylinder 2, this structure, it is effectively ensured the axiality of conducting rod and wiring cylinder, ensureing that conducting rod is capable of substantially seamless connection with wiring cylinder, the installation end of described conducting rod refers to one end of press-in wiring cylinder。
In the present embodiment, described conducting rod 1 and wiring cylinder 2 adopt tin plating red copper to make, good conductivity so that the electric energy loss of binding post is little, and ductility is good, are beneficial to pair of wire connection terminals and are processed and install。
The invention also discloses the installation method of the primary connection terminal of a kind of high-tension current inductor, described installation method comprises the steps:
A. conducting rod 1 and wiring cylinder 2 to primary connection terminal are cleaned, the content of cleaning includes being attached to conducting rod 1 and the greasy dirt on wiring cylinder 2 surface, metal fragment and other solid particles, guarantee that conducting rod 1 and wiring cylinder 2 can be fully contacted, realize substantially seamless connection, prevent corona phenomenon from occurring, reduce contact resistance, reduce electric energy loss；
B. described wiring cylinder 2 is heated, described wiring cylinder 2 is heated to design temperature (temperature upper limit namely set)；
C. described conducting rod 1 being coaxially pressed into described wiring cylinder 2, coaxial press-in ensure that conducting rod 1 and wiring cylinder 2 will not deflect, it is ensured that conducting rod 1 and wiring cylinder 2 can seamless links, it is ensured that product quality and performance；
D. described conducting rod 1 and wiring cylinder 2 is made to cool down。
In the present embodiment, in step b, in step b, described wiring cylinder is that zinc-plated red copper material is made, described wiring cylinder is heated 0.5-2 minute and heats to 800 DEG C at 0.5-2 minute inland river wiring cylinder, prevent local temperature in heating process from rising sharply so that wiring cylinder occurs that crack affects electric conductivity on the one hand, on the other hand prevent temperature too high and heat time heating time long docking spool cause damage and cause at the bottom of the electric conductivity of finished product binding post, service life is short, it is heated to after 800 DEG C and docks the insulation that spool carries out 0.5-1 minute when 800 DEG C, make wiring cylinder temperature equalization everywhere, can either ensure that conducting rod and wiring cylinder can be fully contacted, the degree of accuracy of the magnitude of interference that guarantee conducting rod coordinates with wiring cylinder, conducting rod can also be made to be readily able to press-in wiring cylinder, avoid that process of press in occurring, deformation affects product quality and electric conductivity, and modified effect can also be played, strengthen the tension of binding post, antitorque intensity。
In the present embodiment, step c is also included step e: after described wiring cylinder heating to design temperature, keep the cleaning of wiring cylinder 2 and conducting rod 1, if any pollution, then again it is cleaned, cleaning content is consistent with the cleaning content in step a, it is further ensured that wiring cylinder is capable of substantially seamless connection with conducting rod, the binding post of finished product functional, when described wiring cylinder is cleaned again, need to carry out in the environment of 800 DEG C, it is prevented that the variations in temperature of wiring cylinder, to ensure performance and the quality of finished product binding post。
In the present embodiment, in step c, installation end (one end of the conducting rod press-in wiring cylinder) end face of described conducting rod 1 when being pressed into described conducting rod 1, is made to stretch out wiring cylinder；Described conducting rod is pressed into from one end of wiring cylinder, and described installation end face stretches out from the other end of wiring cylinder, and this structure has been effectively ensured the axiality of conducting rod and wiring cylinder, it is ensured that conducting rod is capable of substantially seamless connection with wiring cylinder。
In the present embodiment, in described step d, in described step d, when making described conducting rod and wiring cylinder cooling, conducting rod and wiring cylinder are incubated and are made conducting rod and described wiring cylinder cool down in nitrogen environment, can effectively prevent chemical reaction when cooling down in normal circumstances from causing the hydraulic performance decline of wiring cylinder and conducting rod on the one hand, the opposing party, in nitrogen environment, rate of cooling can be control effectively by cooling, effectively prevent the too fast temperature inequality causing wiring cylinder and conducting rod of temperature decline from deforming upon, thus affecting quality and the performance of binding post, such as, conducting rod and wiring cylinder have heat conductivity, conducting rod communicates the temperature to conducting rod after being pressed into wiring cylinder and makes the temperature of conducting rod raise, the temperature of cooler environment declines too fast, owing to the installation end (i.e. one end of conducting rod press-in wiring cylinder) of conducting rod is embedded in wiring cylinder, therefore the temperature decline of wiring cylinder will faster than conducting rod, thus wiring cylinder can be caused to deform upon crack even occurs, the electric conductivity making finished product binding post is severely impacted。
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention。
Claims (7)
1. a primary connection terminal for high-tension current inductor, is characterized in that: include the wiring cylinder being connected with winding of current transformer and the conducting rod passing through hot charge practice and described wiring cylinder interference fit；
The magnitude of interference of described wiring cylinder and conducting rod is 0.3-0.5%；
Described wiring cylinder adopts tin plating red copper to make, and primary connection terminal is made by the following method:
Described wiring cylinder is heated, in 0.5-2 minute, wiring cylinder is heated to ceiling temperature 800 DEG C, and when 800 DEG C, described wiring cylinder is carried out the insulation of 0.5-1 minute, after then conducting rod being coaxially pressed into wiring cylinder, conducting rod and wiring cylinder are cooled down。
2. the primary connection terminal of high-tension current inductor according to claim 1, is characterized in that: the end face of the installation end of described conducting rod stretches out described wiring cylinder。
3. the primary connection terminal of high-tension current inductor according to claim 2, is characterized in that: described conducting rod adopts tin plating red copper to make。
4. an installation method for the primary connection terminal of high-tension current inductor, is characterized in that: described installation method comprises the steps:
A. conducting rod and wiring cylinder to primary connection terminal are cleaned；
B. described wiring cylinder is heated, described wiring cylinder is heated to design temperature；
C. described conducting rod is coaxially pressed into described wiring cylinder；
D. described conducting rod and wiring cylinder cooling are made；
In step b, described wiring cylinder is that zinc-plated red copper material is made, and described wiring cylinder is heated, and wiring cylinder was heated to ceiling temperature 800 DEG C in 0.5-2 minute, and described wiring cylinder carries out when 800 DEG C the insulation of 0.5-1 minute。
5. the installation method of the primary connection terminal of high-tension current inductor according to claim 4, is characterized in that: also include step e in step c: after described wiring cylinder heating to design temperature, keep the cleaning of wiring cylinder and conducting rod。
6. the installation method of the primary connection terminal of high-tension current inductor according to claim 5, is characterized in that: in step c, makes the installation end end face of described conducting rod stretch out wiring cylinder when being pressed into described conducting rod。
7. the installation method of the primary connection terminal of high-tension current inductor according to claim 6, is characterized in that: in described step d, and when making described conducting rod and wiring cylinder cooling, described conducting rod and described wiring cylinder cool down in nitrogen environment。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130816.1A CN103187150B (en) | 2013-01-31 | 2013-04-16 | The primary connection terminal of high-tension current inductor and installation method thereof |
| PCT/CN2013/089592 WO2014169674A1 (en) | 2013-04-16 | 2013-12-16 | Primary wiring terminal of high-voltage current transformer, and installation method for primary wiring terminal |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320055477 | 2013-01-31 | ||
| CN2013200554770 | 2013-01-31 | ||
| CN201320055477.0 | 2013-01-31 | ||
| CN201310130816.1A CN103187150B (en) | 2013-01-31 | 2013-04-16 | The primary connection terminal of high-tension current inductor and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103187150A CN103187150A (en) | 2013-07-03 |
| CN103187150B true CN103187150B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310130816.1A Active CN103187150B (en) | 2013-01-31 | 2013-04-16 | The primary connection terminal of high-tension current inductor and installation method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169674A1 (en) * | 2013-04-16 | 2014-10-23 | 浙江天际互感器有限公司 | Primary wiring terminal of high-voltage current transformer, and installation method for primary wiring terminal |
| CN106531426B (en) * | 2016-11-03 | 2018-01-30 | 国网上海市电力公司 | A kind of high-tension current inductor primary connection compression bonding apparatus |
| CN110534291B (en) * | 2019-07-31 | 2020-07-24 | 浙江华荣电池股份有限公司 | Immediately, around flat transformer of formula |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2334087Y (en) * | 1998-04-25 | 1999-08-18 | 上虞市舜阳高压电器有限公司 | Primary terminal of high-voltage current transformer |
| CN2362184Y (en) * | 1998-02-17 | 2000-02-02 | 黄维枢 | Dry-type high-voltage current transformer |
| CN201256074Y (en) * | 2008-07-12 | 2009-06-10 | 厦门大一互科技有限公司 | Primary winding connecting terminal component for current transducer |
| CN102226486A (en) * | 2011-06-22 | 2011-10-26 | 天津理工大学 | CuAl bimetallic composite pipe and die extrusion molding method thereof |
| CN102500999A (en) * | 2011-11-07 | 2012-06-20 | 天润曲轴股份有限公司 | Method for assembling crankshaft connecting rod bushing |
-
2013
- 2013-04-16 CN CN201310130816.1A patent/CN103187150B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2362184Y (en) * | 1998-02-17 | 2000-02-02 | 黄维枢 | Dry-type high-voltage current transformer |
| CN2334087Y (en) * | 1998-04-25 | 1999-08-18 | 上虞市舜阳高压电器有限公司 | Primary terminal of high-voltage current transformer |
| CN201256074Y (en) * | 2008-07-12 | 2009-06-10 | 厦门大一互科技有限公司 | Primary winding connecting terminal component for current transducer |
| CN102226486A (en) * | 2011-06-22 | 2011-10-26 | 天津理工大学 | CuAl bimetallic composite pipe and die extrusion molding method thereof |
| CN102500999A (en) * | 2011-11-07 | 2012-06-20 | 天润曲轴股份有限公司 | Method for assembling crankshaft connecting rod bushing |
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| CN103187150A (en) | 2013-07-03 |
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Address after: No. 8, Jingtian Road, Jiangshan Economic Development Zone, Jiangshan City, Quzhou City, Zhejiang Province 324102 Patentee after: Zhejiang Tianji Instrument Transformer Co.,Ltd. Address before: 324123, No. three, No. 1, Hing Road, Jiangdong District, Jiangshan Economic Development Zone, Zhejiang, China Patentee before: ZHEJIANG HORIZON INSTRUMENT TRANSFORMERS Co.,Ltd. |
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