CN206584814U - A kind of low-voltage current mutual inductor secondary side terminal screw - Google Patents
A kind of low-voltage current mutual inductor secondary side terminal screw Download PDFInfo
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- CN206584814U CN206584814U CN201720286330.0U CN201720286330U CN206584814U CN 206584814 U CN206584814 U CN 206584814U CN 201720286330 U CN201720286330 U CN 201720286330U CN 206584814 U CN206584814 U CN 206584814U
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- 239000000428 dust Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000007664 blowing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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Abstract
一种低压电流互感器二次侧接线螺丝，属于电流互感器领域，包括由粗螺杆和螺帽构成的螺丝，其中，螺帽的一侧面上设有一个长孔，螺帽的端面上设有至少一个螺纹孔，螺纹孔与长孔相通，螺纹孔内设有一次性可折断螺丝。所述长孔为沉孔。优点：二次线置于在沉孔内，能避免灰尘附着在导线上，保证了导线的性能。二次线置于在沉孔内，螺纹孔内的一次性可折断螺丝可对二次线进行压紧，从而消除传统互感器二次侧螺丝与二次线连接不可靠的缺陷；一次性可折断螺丝，方便固定安装，将二次线插入之后，拧断杆体即可，从而提高现场安装的工作效率和工作质量；本实用新型能降低电流互感器二次侧接线难度，增强二次侧接线螺丝与导线连接精密度、可靠性。
A low-voltage current transformer secondary side connection screw belongs to the field of current transformers, including a screw composed of a thick screw and a nut, wherein a long hole is provided on one side of the nut, and a long hole is provided on the end surface of the nut. There is at least one threaded hole, the threaded hole communicates with the long hole, and a disposable breakable screw is arranged in the threaded hole. The long hole is a counterbore. Advantages: The secondary wire is placed in the sink hole, which can prevent dust from adhering to the wire and ensure the performance of the wire. The secondary line is placed in the counterbore, and the one-time breakable screw in the threaded hole can compress the secondary line, thereby eliminating the defect of unreliable connection between the secondary side screw of the traditional transformer and the secondary line; Break off the screw, which is convenient for fixed installation. After inserting the secondary wire, just twist off the rod body, thereby improving the work efficiency and work quality of on-site installation; the utility model can reduce the difficulty of wiring the secondary side of the current transformer and enhance the wiring of the secondary side Precision and reliability of screw and wire connection.
Description
技术领域technical field
本实用新型属于电流互感器领域，尤其是一种低压电流互感器二次侧接线螺丝。The utility model belongs to the field of current transformers, in particular to a secondary side connection screw of a low-voltage current transformer.
背景技术Background technique
郧西县供电公司共有高供低计专变335台、高供低计公变1592台，所用全部为低压穿芯式电流互感器，计量装置安装中互感器二次侧和电能表之间的连接靠的是4平方毫米铜芯线，在安装过程中，需要工作人员用工具将铜芯线的一头剥开并扭成一个小圆圈，以方便套在电流互感器二次侧接线螺丝上，因此产生几个方面的缺陷和隐患：1、互感器安装不方便，每次必须先将二次侧连接线和螺丝旋紧后，才能固定互感器，费时费力；2、由于先旋紧二次侧线路及螺丝的缘故，造成后来在固定互感器的时候，原本上好的二次侧螺丝由于受力或其他缘故不紧密了；3、人工用工具扭的圆圈大小、方向不一样，造成运行后互感器二次电流回路与螺丝接触面不够，达不到电流流过的要求，造成发热烧断，引发开路失流，最后造成计量装置运行异常，损失电量。Yunxi County Power Supply Company has a total of 335 high-supply and low-meter special transformers and 1,592 high-supply and low-meter public transformers, all of which are low-voltage core-through current transformers. The connection is made of 4 square millimeter copper core wire. During the installation process, the staff needs to use tools to peel off one end of the copper core wire and twist it into a small circle so that it can be conveniently placed on the secondary side wiring screws of the current transformer. Therefore, there are several defects and hidden dangers: 1. The installation of the transformer is inconvenient. Every time the secondary side connection wire and the screw must be tightened before the transformer can be fixed, which is time-consuming and laborious; 2. Because the secondary side is tightened first Because of the side circuit and screws, when the transformer is fixed later, the originally good secondary side screws are not tight due to force or other reasons; 3. The size and direction of the circle twisted by manual tools are different, resulting in running The contact surface between the secondary current circuit of the rear transformer and the screw is not enough to meet the requirements of current flow, resulting in heating and blowing, causing open circuit loss, and finally causing abnormal operation of the metering device and loss of power.
根据采集系统提供的高供低计计量装置失流的情况分析中，从目前郧西县供电公司运行的高供低计计量装置中抽查了50台，发现有8台电流互感器二次回路失流的原因是由于二次回路导线与螺丝连接不可靠造成的。According to the analysis of the loss of high-supply and low-meter metering devices provided by the acquisition system, 50 high-supply and low-meter metering devices currently operated by the Yunxi County Power Supply Company were randomly checked, and it was found that the secondary circuit of 8 current transformers failed. The reason for the flow is due to the unreliable connection between the secondary circuit wire and the screw.
发明内容Contents of the invention
针对上述技术问题本实用新型提供一种低压电流互感器二次侧接线螺丝，将彻底解决互感器在安装中由于二次侧连接问题造成的失流情况。In view of the above technical problems, the utility model provides a secondary side connection screw of a low-voltage current transformer, which will completely solve the current loss situation caused by the connection problem of the secondary side during the installation of the transformer.
为了解决上述技术问题，本实用新型的技术方案是：一种低压电流互感器二次侧接线螺丝，包括由粗螺杆和螺帽构成的螺丝，其特征在于：螺帽的一侧面上设有一个长孔，螺帽的端面上设有至少一个螺纹孔，螺纹孔与长孔相通，螺纹孔内设有一次性可折断螺丝。In order to solve the above technical problems, the technical solution of the present invention is: a low-voltage current transformer secondary side connection screw, including a screw composed of a thick screw and a nut, characterized in that: one side of the nut is provided with a The long hole is provided with at least one threaded hole on the end surface of the nut, the threaded hole communicates with the long hole, and a disposable breakable screw is arranged in the threaded hole.
对上述技术方案进一步的限定，所述长孔为沉孔。优点：二次线置于在沉孔内，能避免灰尘附着在导线上，保证了导线的性能。As a further limitation to the above technical solution, the long hole is a counterbore. Advantages: The secondary wire is placed in the sink hole, which can prevent dust from adhering to the wire and ensure the performance of the wire.
对上述技术方案进一步的限定，所述可折断螺丝由细螺杆和杆体构成，螺杆的上端通过筋体与杆体的一端连接，筋体上靠近于细螺杆处设有横向的折断槽。优点：1.当细螺杆压紧二次线后，可折断杆体，这样，在不破坏背连接对象的基础上是很难拆下螺杆的，从而达到防拆卸目的；2.此结构的可折断螺丝无需通过工具，便可达到拧紧的目的。In a further limitation to the above technical solution, the breakable screw is composed of a thin screw and a rod body, the upper end of the screw is connected to one end of the rod body through a rib, and a transverse breaking groove is provided on the rib close to the thin screw. Advantages: 1. When the thin screw rod presses the secondary wire, the rod body can be broken. In this way, it is difficult to remove the screw rod without damaging the back connection object, so as to achieve the purpose of preventing disassembly; 2. The structure can be broken Screws can be tightened without tools.
有益效果：1.二次线置于在沉孔内，螺纹孔内的一次性可折断螺丝可对二次线进行压紧，从而消除传统互感器二次侧螺丝与二次线连接不可靠的缺陷；2. 一次性可折断螺丝，方便固定安装，将二次线插入之后，拧断杆体即可，从而提高现场安装的工作效率和工作质量；3.本实用新型能降低电流互感器二次侧接线难度，增强二次侧接线螺丝与导线连接精密度、可靠性。Beneficial effects: 1. The secondary wire is placed in the sink hole, and the disposable breakable screw in the threaded hole can compress the secondary wire, thereby eliminating the unreliable connection between the secondary side screw and the secondary wire of the traditional transformer Defects; 2. One-time breakable screws are convenient for fixed installation. After inserting the secondary wire, just twist off the rod body, thereby improving the work efficiency and work quality of on-site installation; 3. The utility model can reduce the secondary current transformer It is difficult to connect the side wiring, and enhance the precision and reliability of the connection between the secondary side wiring screws and the wires.
附图说明Description of drawings
图1是本实用新型的爆炸示意图。Fig. 1 is the explosion schematic diagram of the utility model.
图2是本实用新型中折断螺丝结构示意图。Fig. 2 is a structural schematic diagram of a broken screw in the utility model.
图3本实用新型中的电流互感器结构示意图。Fig. 3 is a structural schematic diagram of the current transformer in the utility model.
图4是本实用新型安装在电流互感器上的结构示意图。Fig. 4 is a structural schematic diagram of the utility model installed on a current transformer.
图5是本实用新型的使用状态图。Fig. 5 is a use state diagram of the utility model.
具体实施方式detailed description
如图1和图2所示，一种低压电流互感器二次侧接线螺丝，包括采用全铜材料制成的螺丝，螺丝由粗螺杆1和长方形的螺帽2构成，螺帽2的一侧面上设有一个4平方毫米的长孔201，长孔为沉孔，长孔202的长度尺寸略小于螺帽的长度尺寸，螺帽端面的中心处设有一个6平方毫米的螺纹孔202，螺纹孔202与长孔201的中段相通，螺纹孔内设有一次性可折断螺丝3；所述可折断螺丝由细螺杆301和杆体302构成，细螺杆的上端通过筋体303与杆体的一端连接，筋体上靠近于细螺杆处设有横向的折断槽304，折断槽的横截面为V形。As shown in Figure 1 and Figure 2, a low-voltage current transformer secondary side wiring screw includes a screw made of all-copper material. The screw is composed of a thick screw 1 and a rectangular nut 2. One side of the nut 2 There is a long hole 201 of 4 square millimeters on the top, the long hole is a counterbore, the length of the long hole 202 is slightly smaller than the length of the nut, and the center of the end face of the nut is provided with a threaded hole 202 of 6 square millimeters. The hole 202 communicates with the middle section of the long hole 201, and a disposable breakable screw 3 is provided in the threaded hole; the breakable screw is composed of a thin screw rod 301 and a rod body 302, and the upper end of the thin screw rod is connected with one end of the rod body through a rib body 303, A transverse breaking groove 304 is provided on the tendon close to the thin screw rod, and the cross section of the breaking groove is V-shaped.
为了进一步地提高二次线连接的可靠性，螺帽上再增加一个螺纹孔，两个螺纹孔分别位于螺帽的两端、且两个螺纹孔与长孔连通，两个螺纹孔内的一次性可折断螺丝均能对二次线进行压紧。本领域的技术人员通过此段文字描述，完全能够实施，因此未提供附图。In order to further improve the reliability of the connection of the secondary line, a threaded hole is added on the nut. The two threaded holes are respectively located at both ends of the nut, and the two threaded holes communicate with the long hole. The permanent breakable screws can compress the secondary wire. Those skilled in the art can fully implement it through the text description in this paragraph, so no drawings are provided.
在变压器或互感器领域，一次侧是指变压器或互感器的输入端侧也称初级，二次侧是指其的输出端侧也称次级。二次线是指控制线。In the field of transformers or transformers, the primary side refers to the input side of the transformer or transformer, also known as the primary side, and the secondary side refers to its output side, also known as the secondary side. The secondary line refers to the control line.
使用说明：如图3和图4所示，先将互感器4安装固定好，互感器4上的P1是指一次电流流入、S1是指电流流入端子、S2是指电流流出端子，两个相同结构的螺丝分别安装在S1和S2孔内，即为螺纹连接；详细说明二次线与S1孔内的螺丝如何连接：如图5所示，先将二次线5的线芯插入至螺帽侧面上的长孔内，再将一次性可折断螺丝放置在螺帽上的螺纹孔上，手指拨动杆体旋转，细螺杆旋入至螺帽上的螺纹孔内，之至压紧二次线为止，最后左右晃动可折断螺丝的杆部，筋体上的折断槽内出现断裂，从而使杆体与细螺杆脱离。Instructions for use: As shown in Figure 3 and Figure 4, install and fix the transformer 4 first. P1 on the transformer 4 refers to the primary current inflow, S1 refers to the current inflow terminal, and S2 refers to the current outflow terminal. The two are the same The screws of the structure are respectively installed in the S1 and S2 holes, which is the threaded connection; detail how to connect the secondary line to the screw in the S1 hole: as shown in Figure 5, first insert the core of the secondary line 5 into the nut In the long hole on the side, place the disposable breakable screw on the threaded hole on the nut, and rotate the rod body with your fingers, and the thin screw is screwed into the threaded hole on the nut until the secondary wire is pressed Finally, shaking left and right can break the rod part of the screw, and a fracture occurs in the breaking groove on the tendon body, so that the rod body is separated from the thin screw rod.
本说明书中未做详细说明之处，为本领域公知的常识。What is not described in detail in this specification is common knowledge in the art.
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|---|---|---|---|
| CN201720286330.0U CN206584814U (en) | 2017-03-23 | 2017-03-23 | A kind of low-voltage current mutual inductor secondary side terminal screw |
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| CN201720286330.0U CN206584814U (en) | 2017-03-23 | 2017-03-23 | A kind of low-voltage current mutual inductor secondary side terminal screw |
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| CN206584814U true CN206584814U (en) | 2017-10-24 |
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| CN201720286330.0U Expired - Fee Related CN206584814U (en) | 2017-03-23 | 2017-03-23 | A kind of low-voltage current mutual inductor secondary side terminal screw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242384A (en) * | 2021-12-13 | 2022-03-25 | 广东电网有限责任公司 | Device convenient to change low-voltage current transformer |
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2017
- 2017-03-23 CN CN201720286330.0U patent/CN206584814U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242384A (en) * | 2021-12-13 | 2022-03-25 | 广东电网有限责任公司 | Device convenient to change low-voltage current transformer |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: 442000 Shiyan city of Hubei Province Shi Yang Road No. 10 Patentee after: Shiyan Changneng Electrical Appliance Co., Ltd. Address before: 100000 No. 86, West Chang'an Avenue, Xicheng District, Beijing, Xicheng District Co-patentee before: SHIYAN POWER SUPPLY COMPANY OF STATE GRID HUBEI ELECTRIC POWER COMPANY Patentee before: State Grid Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20210323 |