CN103187150A - Primary wiring terminal of high-voltage current transformer and installation method of primary wiring terminal - Google Patents
Primary wiring terminal of high-voltage current transformer and installation method of primary wiring terminal Download PDFInfo
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- CN103187150A CN103187150A CN2013101308161A CN201310130816A CN103187150A CN 103187150 A CN103187150 A CN 103187150A CN 2013101308161 A CN2013101308161 A CN 2013101308161A CN 201310130816 A CN201310130816 A CN 201310130816A CN 103187150 A CN103187150 A CN 103187150A
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- wiring tube
- conducting rod
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Abstract
The invention provides a primary wiring terminal of a high-voltage current transformer and an installation method of the primary wiring terminal. The primary wiring terminal comprises a wiring cylinder which is connected with a primary winding of the current transformer, and a conductive rod which is in interference fit with the wiring cylinder by using a hot-charging method. According to the primary wiring terminal of the high-voltage current transformer and the installation method of the primary wiring terminal, provided by the invention, the conductive rod can be in interference fit with the wiring cylinder by using the hot-charging method, the seamless connection between the conductive rod and the wiring cylinder is realized, the contact resistance between the conductive and the wiring cylinder is reduced, the wiring terminal is small in heating amount, and the loss of electric energy is effectively reduced; and in the installation process, metal scraps and other pollutants cannot be generated, other connecting pieces such as a bolt and a nut are omitted in an overall structure, and a corona phenomenon can be effectively prevented.
Description
Technical field
The present invention relates to a kind of electric device of high pressure power transmission and distribution, relate in particular to a kind of primary connection terminal and installation method thereof of high-tension current inductor.
Background technology
The primary connection terminal of traditional instrument transformer comprises conducting rod and wiring tube, general structure is the opening that axially is provided with the 4-6mm that increases be used to the internal diameter that makes the wiring tube on the wiring tube, conducting rod is inserted into to cooperate to come by screw bolt and nut then in the wiring tube conducting rod is clamped, this structure and connected mode, still there is the slit between wiring tube and the conducting rod, external particle and steam enter in the wiring tube easily, make the electric conductivity of primary connection terminal descend, and corona phenomenon appears easily, thereby cause the insulation of instrument transformer aging rapidly, reduce the useful life of instrument transformer, and make the contact resistance of wiring tube and conducting rod increase, caloric value makes that greatly the electric energy power loss is big, thereby makes the certainty of measurement of measuring instrument descend.
In being 98211479.6 document, application number announced terminal of a kind of high-tension current inductor, comprise conducting rod and busbar, the shaft part of conducting rod adopts interference fit to be connected with the connecting hole of busbar, conducting rod is pressed in the connecting hole of busbar by moulds of industrial equipment and high pressure machine, and conducting rod is provided with conducting rod is cemented in stiffening device on the busbar, this structure, in process of press in, can produce a spot of metal fragment, these metal fragments can not be removed fully, and because the effect of high pressure, make conducting rod and busbar generation deformation easily and produce metal fragment, therefore there are space and metal fragment between the conducting rod of a terminal and the busbar, can't avoid occurring corona, and in use airborne steam enters into space between conducting rod and the busbar, the electric conductivity of a terminal descends, and influences the certainty of measurement of measuring instrument.
Therefore, need to propose a kind of new high-tension current inductor primary connection terminal, can make conducting rod and wiring tube that the contact-making surface of conducting rod and wiring tube is combined closely, realize basic seamless link, make the contact-making surface of conducting rod and wiring tube not have metal fragment and other pollutants, effectively prevent the generation of corona phenomenon, can guarantee the electric conductivity of binding post, thereby guarantee the certainty of measurement of measuring instrument, prolong the useful life of instrument 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, can make conducting rod and wiring tube that the contact-making surface of conducting rod and wiring tube is combined closely, realize basic seamless link, make the contact-making surface of conducting rod and wiring tube not have metal fragment and other pollutants, effectively prevent the generation of corona phenomenon, can guarantee the electric conductivity of binding post, thereby guarantee the certainty of measurement of measuring instrument, prolong the useful life of instrument transformer.
The primary connection terminal of high-tension current inductor provided by the invention comprises the wiring tube that is connected with winding of current transformer and the conducting rod by hot charge practice and described wiring tube interference fit;
Further, the magnitude of interference of described wiring tube and conducting rod is 0.3-0.5%;
Further, the end face of the installation end of described conducting rod stretches out described wiring tube;
Further, described conducting rod and wiring tube adopt zinc-plated red copper to make.
The invention also discloses a kind of installation method of primary connection terminal of high-tension current inductor, described installation method comprises the steps:
A. conducting rod and the wiring tube to the primary connection terminal cleans;
B. described wiring tube is heated, described wiring tube is heated to design temperature;
C. be pressed into described wiring tube with described conducting rod is coaxial;
D. make the cooling of described conducting rod and wiring tube;
Further, among the step b, described wiring tube is that zinc-plated red copper material is made, and to the heating of described wiring tube, the wiring tube is heated to 800 ℃ of ceiling temperatures in 0.5-2 minute, and under 800 ℃ condition described wiring tube is carried out 0.5-1 minute insulation;
Further, also comprise step e among the step c: after treating that described wiring tube is heated to design temperature, keep the cleaning of wiring tube and conducting rod;
Further, among the step c, make the installation end end face of described conducting rod stretch out the wiring tube when being pressed into described conducting rod;
Further, in the described steps d, when making the cooling of described conducting rod and wiring tube, be incubated and make conducting rod and described wiring tube in nitrogen environment, to cool off to conducting rod and wiring tube.
Beneficial effect of the present invention: primary connection terminal and the installation method thereof of high-tension current inductor provided by the invention, conducting rod and wiring tube adopt hot charge practice to realize interference fit, realize the basic seamless link of conducting rod and wiring tube, reduce the contact resistance between conducting rod and the wiring tube greatly, the caloric value of binding post is few, effectively reduces energy loss; In installation process, can not produce metal fragment and other pollutants, and overall structure do not have other connectors (as screw bolt and nut), can effectively prevent the generation of corona phenomenon; The interference fit of conducting rod and wiring tube makes compact overall structure, can strengthen the stress of contact-making surface, effectively improves the tension of binding post, antitorque intensity; Can prevent effectively in the use that pernicious gases such as steam and pollutant from entering into the contact-making surface of conducting rod and wiring tube, guarantee the electric conductivity of binding post, guarantee the measuring accuracy of the lossless substantially transmission of electric energy and measuring instrument, and the useful life of prolongation current transformer, and making binding post affected by environment little, adaptability is strong.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of wiring tube of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is the structural representation of wiring tube of the present invention, as shown in the figure, the primary connection terminal of high-tension current inductor provided by the invention comprises the wiring tube 2 that is connected with winding of current transformer and the conducting rod 1 by hot charge practice and described wiring tube interference fit; Primary connection terminal and the installation method thereof of high-tension current inductor provided by the invention, conducting rod and wiring tube adopt hot charge practice to realize interference fit, realize the basic seamless link of conducting rod and wiring tube, reduce the contact resistance between conducting rod and the wiring tube, the caloric value of binding post is few, effectively reduces energy loss; In installation process, can not produce metal fragment and other pollutants, and overall structure do not have other connectors (as screw bolt and nut), can effectively prevent the generation of corona phenomenon.
In the present embodiment, described wiring tube 2 is 0.3-0.5% with the magnitude of interference of conducting rod 1, the magnitude of interference of this scope, guarantee between described wiring tube and the conducting rod to realize seamless link and the stress of contact-making surface between the two, with the tension that strengthens binding post, antitorque intensity, avoid the magnitude of interference to make the bulk strength of binding post reduce too greatly, avoid wiring tube generation deformation to influence electric conductivity, also avoid the too for a short time contact that causes contact-making surface of the magnitude of interference insufficient and influence the stress of electric conductivity and contact-making surface.
In the present embodiment, the end face of the installation end of described conducting rod 1 stretches out described wiring tube 2; Described conducting rod is pressed into from an end of wiring tube, the installation end end face of conducting rod 1 stretches out from the other end of wiring tube 2, this structure, effectively guaranteed the axiality of conducting rod and wiring tube, assurance conducting rod and wiring tube can be realized basic seamless link, and the installation end of described conducting rod refers to be pressed into an end of wiring tube.
In the present embodiment, described conducting rod 1 and wiring tube 2 adopt zinc-plated red copper to make, and good conductivity makes that the electric energy loss of binding post is little, and ductility is good, is beneficial to pair of wire connection terminals and processes and install.
The invention also discloses a kind of installation method of primary connection terminal of high-tension current inductor, described installation method comprises the steps:
A. conducting rod 1 and the wiring tube 2 to the primary connection terminal cleans, the content of cleaning comprises greasy dirt, metal fragment and other solid particles that is attached to conducting rod 1 and wiring tube 2 surfaces, guarantee that conducting rod 1 can fully contact with wiring tube 2, realize basic seamless link, prevent that corona phenomenon from taking place, reduce contact resistance, reduce electric energy loss;
B. described wiring tube 2 is heated, described wiring tube 2 is heated to design temperature (i.e. the temperature upper limit of She Dinging);
C. be pressed into described wiring tube 2 with described conducting rod 1 is coaxial, coaxial being pressed into can guarantee that conducting rod 1 and wiring tube 2 can not deflect, and guarantees that conducting rod 1 and wiring tube 2 can seamless links, guarantees product quality and performance;
D. make described conducting rod 1 and 2 coolings of wiring tube.
In the present embodiment, among the step b, among the step b, described wiring tube is that zinc-plated red copper material is made, be heated to 800 ℃ to described wiring tube heating 0.5-2 minute and at 0.5-2 minute inland river wiring tube, preventing on the one hand that local temperature rises sharply in the heating process makes the wiring tube crack occur and influence electric conductivity, prevent that on the other hand temperature too high and heating time of long butted line tube from causing damage and cause at the bottom of the electric conductivity of finished product binding post, useful life is short, be heated to after 800 ℃ and under 800 ℃ condition the butted line tube carry out 0.5-1 minute insulation, make wiring tube temperature equalization everywhere, can either guarantee that conducting rod can fully contact with the wiring tube, guarantee the accuracy of the magnitude of interference that conducting rod cooperates with the wiring tube, can also make conducting rod can be easy to be pressed into the wiring tube, avoid occurring distortion in the process of press in and influencing product quality and electric conductivity, and can also play modified effect, the tension of enhancing binding post, antitorque intensity.
In the present embodiment, also comprise step e among the step c: after treating that described wiring tube is heated to design temperature, the cleaning that keeps wiring tube 2 and conducting rod 1, if any pollution, then clean again, the cleaning content is consistent with cleaning content among the step a, further assurance wiring tube and conducting rod can be realized basic seamless link, the binding post of finished product functional, when described wiring tube is cleaned again, need in 800 ℃ environment, to carry out, prevent the variations in temperature of wiring tube, to guarantee performance and the quality of finished product binding post.
In the present embodiment, among the step c, make installation end (conducting rod is pressed into an end of the wiring tube) end face of described conducting rod 1 stretch out the wiring tube when being pressed into described conducting rod 1; Described conducting rod is pressed into from an end of wiring tube, and described installation end face stretches out from the other end of wiring tube, and this structure has effectively guaranteed the axiality of conducting rod and wiring tube, guarantees that conducting rod and wiring tube can realize basic seamless link.
In the present embodiment, in the described steps d, in the described steps d, when making the cooling of described conducting rod and wiring tube, be incubated and make conducting rod and described wiring tube in nitrogen environment, to cool off to conducting rod and wiring tube, chemical reaction in the time of can effectively preventing on the one hand under conventional environment cooling and cause the performance decline of wiring tube and conducting rod, the opposing party, cooling can control effectively to cooling rate in the nitrogen environment, effectively prevent the too fast uneven generation of the temperature deformation that causes wiring tube and conducting rod of temperature decline, thereby influence quality and the performance of binding post, for example, conducting rod and wiring tube have thermal conductivity, conducting rod is pressed into and communicates the temperature to conducting rod behind the wiring tube and the temperature of conducting rod is raise, the temperature of cooler environment descends too fast, because the installation end (being the end that conducting rod is pressed into the wiring tube) of conducting rod is embedded in the wiring tube, therefore the decline of the temperature of wiring tube will be faster than conducting rod, thereby can cause the generation deformation of wiring tube even the crack occur, make that the electric conductivity of finished product binding post is had a strong impact on.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. the primary connection terminal of a high-tension current inductor is characterized in that: comprise the wiring tube that is connected with winding of current transformer and the conducting rod by hot charge practice and described wiring tube interference fit.
2. according to the primary connection terminal of the described high-tension current inductor of claim 1, it is characterized in that: the magnitude of interference of described wiring tube and conducting rod is 0.3-0.5%.
3. according to the primary connection terminal of the described high-tension current inductor of claim 2, it is characterized in that: the end face of the installation end of described conducting rod stretches out described wiring tube.
4. according to the primary connection terminal of the described high-tension current inductor of claim 3, it is characterized in that: described conducting rod and wiring tube adopt zinc-plated red copper to make.
5. the installation method of the primary connection terminal of a high-tension current inductor, it is characterized in that: described installation method comprises the steps:
A. conducting rod and the wiring tube to the primary connection terminal cleans;
B. described wiring tube is heated, described wiring tube is heated to design temperature;
C. be pressed into described wiring tube with described conducting rod is coaxial;
D. make the cooling of described conducting rod and wiring tube.
6. according to the installation method of the primary connection terminal of the described high-tension current inductor of claim 5, it is characterized in that: among the step b, described wiring tube is that zinc-plated red copper material is made, to described wiring tube heating, in 0.5-2 minute, the wiring tube is heated to 800 ℃ of ceiling temperatures, and under 800 ℃ condition, described wiring tube carried out 0.5-1 minute insulation.
7. to remove the installation method of the primary connection terminal of 6 described high-tension current inductors according to right, it is characterized in that: also comprise step e among the step c: after treating that described wiring tube is heated to design temperature, keep the cleaning of wiring tube and conducting rod.
8. according to the installation method of the primary connection terminal of the described high-tension current inductor of claim 7, it is characterized in that: among the step c, make the installation end end face of described conducting rod stretch out the wiring tube when being pressed into described conducting rod.
9. the installation method of the primary connection terminal of described high-tension current inductor according to Claim 8, it is characterized in that: in the described steps d, when making the cooling of described conducting rod and wiring tube, be incubated and make conducting rod and described wiring tube in nitrogen environment, to cool off to conducting rod and wiring tube.
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 | ||
| CN201320055477.0 | 2013-01-31 | ||
| CN2013200554770 | 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 |
|---|---|
| CN103187150A true CN103187150A (en) | 2013-07-03 |
| CN103187150B CN103187150B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310130816.1A Active CN103187150B (en) | 2013-01-31 | 2013-04-16 | The primary connection terminal of high-tension current inductor and installation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103187150B (en) |
Cited By (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 |
| CN106531426A (en) * | 2016-11-03 | 2017-03-22 | 国网上海市电力公司 | Primary connection crimping device of high-voltage current transformer |
| CN110534291A (en) * | 2019-07-31 | 2019-12-03 | 关军 | A kind of vertical winding type flat transformer |
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 |
Cited By (4)
| 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 |
| CN106531426A (en) * | 2016-11-03 | 2017-03-22 | 国网上海市电力公司 | Primary connection crimping device of high-voltage current transformer |
| 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 |
| CN110534291A (en) * | 2019-07-31 | 2019-12-03 | 关军 | A kind of vertical winding type flat transformer |
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| Publication number | Publication date |
|---|---|
| CN103187150B (en) | 2016-06-22 |
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Inventor after: Xu Wen Inventor after: Zhu Shunfeng Inventor after: Kang Fuxin Inventor before: Xu Wen |
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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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