CN110133346B - Connection structure for reducing contact resistance of electric energy meter - Google Patents
Connection structure for reducing contact resistance of electric energy meter Download PDFInfo
- Publication number
- CN110133346B CN110133346B CN201910561455.3A CN201910561455A CN110133346B CN 110133346 B CN110133346 B CN 110133346B CN 201910561455 A CN201910561455 A CN 201910561455A CN 110133346 B CN110133346 B CN 110133346B
- Authority
- CN
- China
- Prior art keywords
- electric energy
- hollow columnar
- columnar shell
- energy meter
- contact resistance
- 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.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 59
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052802 copper Inorganic materials 0.000 claims abstract description 28
- 239000010949 copper Substances 0.000 claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 14
- 238000004381 surface treatment Methods 0.000 abstract description 6
- 238000002788 crimping Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
Abstract
The invention discloses a connection structure for reducing contact resistance of an electric energy meter, which is suitable for an installed standard electric energy meter and comprises a hollow columnar shell provided with an opening and a thimble plug; the bottom in the cavity columnar shell forms the tin filling space, and a plurality of superfine copper wires fixed with the tin filling space are also arranged in the cavity columnar shell. According to the invention, the hollow columnar shell is embedded into the wiring terminal of the installation type standard electric energy meter, and the hollow columnar shell is internally provided with the superfine copper wires subjected to surface treatment, so that the contact resistance between the thimble plug on the crimping type verification table and the wiring terminal of the electric energy meter is reduced, and the temperature rise under the condition of high current is reduced. The thimble plug matched with the hollow columnar shell is provided with the arc-shaped section, the thimble plug is pressed into the hollow columnar shell through a tool and fully contacts with the superfine copper wires, so that the enhancement of the conductivity is realized, the contact resistance and the temperature rise are effectively reduced, and meanwhile, the thimble plug has the advantages of simple structure, easiness in realization and simplicity and convenience in disassembly.
Description
Technical Field
The invention relates to the technical fields of instruments and meters and electricians, in particular to a connecting structure for reducing contact resistance of an electric energy meter.
Background
In order to ensure that the electric energy meter is accurate and reliable in measurement, the electric energy meter meets the requirements of legal regulations and needs to be calibrated. At present, the verification of the electric energy meter has been realized automatically, an electric energy meter automatic verification assembly line is commonly used when the electric energy meter is verified in a large scale, the electric energy meter automatic verification assembly line is provided with a plurality of verification units, each verification unit is provided with a plurality of epitopes, a plurality of electric energy meters can be verified at the same time, and the structure of the electric energy meter automatic verification assembly line is generally mainly composed of a standard electric energy meter, a power source, an error calculator, a wiring device and the like whether the electric energy meter is a single-phase or three-phase verification unit. The standard electric energy meter refers to an electric energy meter which is used as a metering standard in electric energy value transmission, and is a core component for detecting a common electric energy meter. Hundreds of common electric energy meters are connected into binding posts of each epitope of an automatic verification assembly line of the electric energy meters in a voltage parallel and current series mode, so that verification of a plurality of electric energy meters can be achieved at the same time.
The installation type standard electric energy meter is mainly used for checking the metering accuracy of an automatic assembly line of the electric energy meter. When confirming whether each epitope of the electric energy meter automatic verification assembly line is accurate, a plurality of installation type standard electric energy meters are required to be used as the checked meter to be verified by the electric energy meter automatic assembly line, but because the wiring terminals of the installation type standard electric energy meters cannot be connected with the wiring terminals of the assembly line epitopes in a screw crimping mode, the thimble plugs of the assembly line epitopes still need to be used, and the thimble plugs are pressed into the wiring terminals of the installation type standard electric energy meters. The connection mode has the defect of small contact surface, the thimble plug is various in form and is shaped like a five-flower eight door, when the thimble plug is not matched with the wiring terminal of the installed standard electric energy meter, the contact resistance is larger, the temperature is increased under the condition of high current, the surfaces of the thimble plug and the wiring terminal are easily oxidized, the contact resistance is further increased, and the verification result of an automatic assembly line of the electric energy meter is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a connecting structure for reducing the contact resistance of an electric energy meter.
The aim of the invention is realized by the following technical scheme:
the utility model provides a reduce connection structure of electric energy meter contact resistance, is applicable to the standard electric energy meter of installation formula, includes hollow columnar casing and thimble plug that is provided with the opening; the bottom in the hollow columnar shell forms a tin filling space, and a plurality of ultrafine copper wires fixed with the tin filling space are also arranged in the hollow columnar shell;
the plurality of the superfine copper wires are cylindrical and uniformly distributed in the hollow columnar shell, one end of each superfine copper wire is fixedly adhered to the tin filling space in a tin filling manner, and the other end of each superfine copper wire is exposed in the opening of the hollow columnar shell;
the hollow columnar shell is placed in a wiring terminal of the electric energy meter;
the thimble plug comprises an asymmetric plug, a rotating shaft block and a fastening screw rod which are connected in sequence;
the asymmetric plug comprises a cylindrical part at the bottom and a frontal arc section part formed by grinding the top of the cylindrical part;
the upper surface of the rotating shaft block is welded and fixed with the bottom surface of the asymmetric plug cylindrical part, and a round hole penetrating through the rotating shaft block is formed in the rotating shaft block; the lower surface of the rotating shaft block is welded and fixed with the fastening screw;
the asymmetric plug is matched with the fastening screw rod through a tool to be pressed into the hollow columnar shell and extrudes the superfine copper wires.
The surface of each superfine copper wire is tinned so as to improve the oxidation resistance of the superfine copper wire.
And a tin filling hole for filling tin into the superfine copper wire is formed in the side wall of the hollow columnar shell.
The hollow columnar shell is made of copper.
The tool is any one of a hydraulic tool and a pneumatic tool.
The beneficial effects of the invention are as follows:
according to the invention, the hollow columnar shell is embedded into the wiring terminal of the installation type standard electric energy meter, and the hollow columnar shell is internally provided with the superfine copper wires subjected to surface treatment, so that the contact resistance between the thimble plug on the crimping type verification table and the wiring terminal of the electric energy meter is reduced, and the temperature rise under the condition of high current is reduced. The thimble plug matched with the hollow columnar shell is provided with the arc-shaped section, the thimble plug is pressed into the hollow columnar shell through a tool and fully contacts with the superfine copper wires, so that the enhancement of the conductivity is realized, the contact resistance and the temperature rise are effectively reduced, and meanwhile, the thimble plug has the advantages of simple structure, easiness in realization and simplicity and convenience in disassembly.
Drawings
FIG. 1 is a schematic structural view of a hollow cylindrical shell;
FIG. 2 is a schematic view of a thimble plug;
FIG. 3 is a schematic view of a hollow cylindrical housing and a thimble plug
In the figure, a 1-hollow columnar shell, a 2-opening, a 3-superfine copper wire, a 4-tin filling space, a 5-tin filling hole, a 6-asymmetric plug, a 7-rotating shaft block, an 8-fastening screw and a 9-round hole are formed.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1 to 3, a connection structure for reducing the contact resistance of an electric energy meter is composed of a hollow cylindrical shell 1, an opening 2, an ultrafine copper wire 3, a tin filling space 4, a tin filling hole 5, an asymmetric plug 6, a rotating shaft block 7, a fastening screw 8 and a round hole 9.
The utility model provides a reduce connection structure of electric energy meter contact resistance, is applicable to the standard electric energy meter of installation formula, includes hollow columnar casing 1 and thimble plug that is provided with opening 2; a tin filling space 4 is formed at the bottom in the hollow columnar shell 1, and a plurality of ultrafine copper wires 3 fixed with the tin filling space 4 are also arranged in the hollow columnar shell 1;
the plurality of extremely fine copper wires 3 are cylindrical and uniformly distributed in the hollow columnar shell 1, one end of each extremely fine copper wire 3 is fixedly connected with the tin filling space 4 in a tin filling manner, and the other end of each extremely fine copper wire 3 is exposed in the opening 2 of the hollow columnar shell 1;
the hollow columnar shell 1 is placed in a wiring terminal of the electric energy meter;
the thimble plug comprises an asymmetric plug 6, a rotating shaft block 7 and a fastening screw rod 8 which are connected in sequence;
the asymmetric plug 6 comprises a cylindrical part at the bottom and a part with a frontal arc-shaped section formed by grinding the top of the cylindrical part;
the upper surface of the rotating shaft block 7 is welded and fixed with the bottom surface of the cylindrical part of the asymmetric plug 6, and a round hole 9 penetrating through the rotating shaft block is formed in the rotating shaft block 7; the lower surface of the rotating shaft block 7 is welded and fixed with the fastening screw rod 8;
the asymmetric plug 6 is matched with the fastening screw rod 8 through a tool to be pressed into the hollow cylindrical shell 1 and presses the superfine copper wires 3.
The surface of each superfine copper wire 3 is tinned so as to improve the oxidation resistance of the superfine copper wire 3.
And a tin filling hole 5 for filling tin into the superfine copper wire 3 is formed in the side wall of the hollow cylindrical shell 1.
The hollow columnar shell 1 is made of copper.
The tool is any one of a hydraulic tool and a pneumatic tool.
Embodiment one:
as shown in fig. 1, it should be first described that the surface treatment is performed on the extremely fine copper wire before the extremely fine copper wire is packaged, the surface of the extremely fine copper wire is plated with tin, then a plurality of extremely fine copper wires are packaged in a hollow cylindrical shell, a tin filling hole for tin filling is formed in the outer side wall of the hollow cylindrical shell, the extremely fine copper wire and the tin filling space are subjected to tin filling through tin filling Kong Zai, one end of the extremely fine copper wire after the tin filling treatment is fixedly adhered to the tin filling space, the surface treatment of the extremely fine copper wire has the advantages of improving the oxidation resistance of the extremely fine copper wire and prolonging the service life of the extremely fine copper wire, copper is used as a manufacturing material of the hollow cylindrical shell, and red copper with higher copper content can be adopted.
The first embodiment is suitable for an installation type standard electric energy meter, firstly, a hollow columnar shell body with packaged ultrafine copper wires is placed in a wiring terminal of the electric energy meter, a crimping screw of the wiring terminal penetrates through a tin filling hole and is in contact fixation with the ultrafine copper wires exposed in the tin filling hole, so that the hollow columnar shell body is fixed in the wiring terminal of the electric energy meter, then a conventional thimble plug is pressed into the hollow columnar shell body through a hydraulic tool or a pneumatic tool, and under the action of the hydraulic tool or the pneumatic tool, the conventional thimble plug extrudes the copper wires and is matched and fixed with the hollow columnar shell body.
The conventional thimble plug is inserted into the hollow columnar shell and fully contacts with the superfine copper wire, so that the contact area of the electric energy meter and the current binding post is increased, the superfine copper wire subjected to surface treatment is good in oxidation resistance, the hollow columnar shell is made of red copper, the heat conductivity and the electric conductivity are good, the contact resistance of the conventional thimble plug and the wiring terminal of the installed electric energy meter is greatly reduced, and the temperature rise under the condition of high current is reduced.
Embodiment two:
as shown in fig. 3, the second embodiment is applicable to the case where the thimble plug with an arc section is matched with the hollow cylindrical housing, and the second embodiment is also applicable to the standard electric energy meter.
Firstly, a hollow columnar shell body after tin filling treatment of an ultrafine copper wire is placed into a wiring terminal of an installation type standard electric energy meter, and then a thimble plug with an arc-shaped section is pressed into the hollow columnar shell body through a hydraulic tool or a pneumatic tool.
In summary, the hollow columnar shell is embedded into the wiring terminal of the installation type standard electric energy meter, and the hollow columnar shell is internally provided with the superfine copper wires subjected to surface treatment, so that the contact resistance between the thimble plug on the crimping verification table and the wiring terminal of the electric energy meter is reduced, and the temperature rise under the condition of high current is reduced. The thimble plug matched with the hollow columnar shell is provided with the arc-shaped section, the thimble plug is pressed into the hollow columnar shell through a tool and fully contacts with the superfine copper wires, so that the enhancement of the conductivity is realized, the contact resistance and the temperature rise are effectively reduced, and meanwhile, the thimble plug has the advantages of simple structure, easiness in realization and simplicity and convenience in disassembly.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art should make some changes or modifications to the above-mentioned embodiments without departing from the technical scope of the present invention, but any simple modification, equivalent changes and modification to the above-mentioned embodiments according to the technical principles of the present invention shall fall within the scope of the technical scope of the present invention.
Claims (3)
1. The utility model provides a reduce connection structure of electric energy meter contact resistance, is applicable to the standard electric energy meter of installation formula, its characterized in that: comprises a hollow columnar shell (1) provided with an opening (2) and a thimble plug; a tin filling space (4) is formed at the bottom in the hollow columnar shell (1), and a plurality of extremely fine copper wires (3) fixed with the tin filling space (4) are also arranged in the hollow columnar shell (1);
the plurality of extremely fine copper wires (3) are cylindrical and uniformly distributed in the hollow columnar shell (1), one end of each extremely fine copper wire (3) is fixedly adhered to the tin filling space (4) in a tin filling manner, and the other end of each extremely fine copper wire (3) is exposed in the opening (2) of the hollow columnar shell (1);
the hollow columnar shell (1) is placed in a wiring terminal of the electric energy meter;
the thimble plug comprises an asymmetric plug (6), a rotating shaft block (7) and a fastening screw rod (8) which are connected in sequence;
the asymmetric plug (6) comprises a cylindrical part at the bottom and a frontal arc section part formed by grinding the top of the cylindrical part;
the upper surface of the rotating shaft block (7) is welded and fixed with the bottom surface of the cylindrical part of the asymmetric plug (6), and a round hole (9) penetrating through the rotating shaft block is formed in the rotating shaft block (7); the lower surface of the rotating shaft block (7) is welded and fixed with the fastening screw rod (8);
the asymmetric plug (6) is matched with the fastening screw rod (8) through a tool to be pressed into the hollow columnar shell (1) and extrude the superfine copper wires (3);
the surface of each superfine copper wire (3) is tinned so as to improve the oxidation resistance of the superfine copper wires (3);
and a tin filling hole (5) for filling tin into the superfine copper wire (3) is formed in the side wall of the hollow columnar shell (1).
2. The connection structure for reducing contact resistance of an electric energy meter according to claim 1, wherein: the hollow columnar shell (1) is made of copper.
3. The connection structure for reducing contact resistance of an electric energy meter according to claim 1, wherein: the tool is any one of a hydraulic tool and a pneumatic tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561455.3A CN110133346B (en) | 2019-06-26 | 2019-06-26 | Connection structure for reducing contact resistance of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561455.3A CN110133346B (en) | 2019-06-26 | 2019-06-26 | Connection structure for reducing contact resistance of electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110133346A CN110133346A (en) | 2019-08-16 |
| CN110133346B true CN110133346B (en) | 2024-01-26 |
Family
ID=67579571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910561455.3A Active CN110133346B (en) | 2019-06-26 | 2019-06-26 | Connection structure for reducing contact resistance of electric energy meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN110133346B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336101A (en) * | 2005-12-21 | 2008-12-31 | 戴维·霍拉萨尼扎德 | Apparatus for continuous pressure massage |
| CN101769962A (en) * | 2008-12-31 | 2010-07-07 | 深圳市科陆电子科技股份有限公司 | Electric energy meter detecting system and device for detecting contact resistance and method thereof |
| CN202256658U (en) * | 2011-08-18 | 2012-05-30 | 河南思达高科技股份有限公司 | Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same |
| CN202433422U (en) * | 2011-12-12 | 2012-09-12 | 宁波三星电气股份有限公司 | Connecting mechanism for voltage transformer secondary circuit of electric energy meter |
| CN103983825A (en) * | 2014-05-19 | 2014-08-13 | 国家电网公司 | Meter frame wiring rod head used for electric energy meter testing |
| CN103983826A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Full-contact wiring rod head for electric energy meter testing meter stand |
| CN204855778U (en) * | 2015-06-19 | 2015-12-09 | 国网天津市电力公司 | A 0. 02 grade of miniature standard electric energy meter for examineing and determine check during directly going into formula three -phase intelligent ammeter verification system |
| CN105186185A (en) * | 2015-09-22 | 2015-12-23 | 宁波华缘玻璃钢电器制造有限公司 | Electric energy meter bayonet socket |
| CN206684287U (en) * | 2017-01-13 | 2017-11-28 | 广东省计量科学研究院（华南国家计量测试中心） | Electric energy meter error automatic detection device |
| CN210572435U (en) * | 2019-06-26 | 2020-05-19 | 广东省计量科学研究院（华南国家计量测试中心） | Connection structure for reducing contact resistance of electric energy meter |
-
2019
- 2019-06-26 CN CN201910561455.3A patent/CN110133346B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336101A (en) * | 2005-12-21 | 2008-12-31 | 戴维·霍拉萨尼扎德 | Apparatus for continuous pressure massage |
| CN101769962A (en) * | 2008-12-31 | 2010-07-07 | 深圳市科陆电子科技股份有限公司 | Electric energy meter detecting system and device for detecting contact resistance and method thereof |
| CN202256658U (en) * | 2011-08-18 | 2012-05-30 | 河南思达高科技股份有限公司 | Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same |
| CN202433422U (en) * | 2011-12-12 | 2012-09-12 | 宁波三星电气股份有限公司 | Connecting mechanism for voltage transformer secondary circuit of electric energy meter |
| CN103983825A (en) * | 2014-05-19 | 2014-08-13 | 国家电网公司 | Meter frame wiring rod head used for electric energy meter testing |
| CN103983826A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Full-contact wiring rod head for electric energy meter testing meter stand |
| CN204855778U (en) * | 2015-06-19 | 2015-12-09 | 国网天津市电力公司 | A 0. 02 grade of miniature standard electric energy meter for examineing and determine check during directly going into formula three -phase intelligent ammeter verification system |
| CN105186185A (en) * | 2015-09-22 | 2015-12-23 | 宁波华缘玻璃钢电器制造有限公司 | Electric energy meter bayonet socket |
| CN206684287U (en) * | 2017-01-13 | 2017-11-28 | 广东省计量科学研究院（华南国家计量测试中心） | Electric energy meter error automatic detection device |
| CN210572435U (en) * | 2019-06-26 | 2020-05-19 | 广东省计量科学研究院（华南国家计量测试中心） | Connection structure for reducing contact resistance of electric energy meter |
Non-Patent Citations (2)
| Title |
|---|
| 低压线路常见电气火灾原因分析认定及预防措施研究;张学楷;《中国硕士电子期刊工程科技I辑》;全文 * |
| 电流互感器误差影响因素与应用分析;江鹏 等;《仪器仪表标准化与计量》;全文 * |
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| CN110133346A (en) | 2019-08-16 |
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