CN-224232465-U - Fixing structure for connecting terminal of current transformer

CN224232465UCN 224232465 UCN224232465 UCN 224232465UCN-224232465-U

Abstract

The application provides a fixing structure of a wiring terminal of a current transformer, relates to the technical field of wiring terminals of current transformers, and is used for improving the reliability of connection between the wiring terminal of the current transformer and a wire. The current transformer wiring terminal fixing structure comprises a conductive body and a protective shell, wherein one end of the conductive body is provided with a positioning boss used for soldering with a wire, the protective shell comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably connected, a containing cavity is formed by surrounding, the positioning boss is located in the containing cavity, and the conductive body is detachably connected with the upper shell. Therefore, the tin material can permeate into gaps among wire core strands to form a metallurgical bonding layer, which is beneficial to improving the reliability of connection between the positioning boss and the lead, thereby reducing energy loss in the power transmission process. In addition, through the holding chamber that upper casing and lower casing formed, can form the protection to the junction of location boss and wire to can further ensure the reliability of connection.

Inventors

Guo change
JI WENZE
WANG MENG
LI PENG
ZENG JIANGTAO
LI LIANG
Shui Huawei
LIANG FAN
Mao Zhenpan
GAO MAOMAO

Assignees

铜川市峡光新能源发电有限公司
中国三峡新能源(集团)股份有限公司陕西分公司
中国三峡新能源(集团)股份有限公司
中国长江三峡集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250409

Claims (10)

1. The utility model provides a current transformer binding post fixed knot constructs, its characterized in that, current transformer binding post fixed knot constructs includes: The conductive body is provided with a positioning boss at one end, and the positioning boss is used for soldering with a wire; The protection shell comprises an upper shell and a lower shell, wherein the upper shell is detachably connected with the lower shell, a containing cavity is defined, the positioning boss is located in the containing cavity, and the conductive body is detachably connected with the upper shell.
2. The current transformer binding post fixing structure according to claim 1, wherein the conductive body comprises a connecting portion and a body portion, the connecting portion is arranged at one end of the body portion, the positioning boss is arranged on the connecting portion, the connecting portion is provided with a diversion trench, and the diversion trench is located at one side of the positioning boss, which is close to the body portion.
3. The current transformer binding post fixed knot of claim 2 constructs, wherein hold the intracavity and be equipped with first location protruding and second location protruding, first location protruding set up in on the upper housing, the second location protruding set up in on the lower housing, first location protruding and the second location protruding enclose out the installation cavity, the part of body portion is located the installation cavity.
4. The current transformer binding post fixed knot of claim 3 constructs, wherein be equipped with a plurality of annular draw-in grooves on the body portion, annular draw-in groove is located the installation cavity, be equipped with a plurality of fixed protruding on the first location protruding, fixed protruding with annular draw-in groove cooperatees.
5. The current transformer binding post fixed knot of claim 3 constructs, wherein be equipped with the injecting glue hole on the upper housing, the injecting glue hole is just right with connecting portion.
6. The current transformer terminal fixing structure according to claim 5, further comprising a sealing plug detachably provided at the glue injection hole.
7. The current transformer binding post fixed knot of claim 1 constructs, wherein there is the first contained angle between the extending direction of location boss and the extending direction of electrically conductive body, the value range of first contained angle is 8 to 12.
8. The current transformer terminal fixing structure according to claim 1, wherein a plurality of anti-slip patterns are provided on the positioning boss in an extending direction of the positioning boss.
9. The current transformer binding post fixed knot of claim 8 constructs, wherein, the anti-skidding line with have the second contained angle between the location boss, the value range of second contained angle is 15 to 20.
10. The current transformer terminal fixing structure according to claim 1, wherein a sealing ring is provided on a side of the lower case facing the upper case.

Description

Fixing structure for connecting terminal of current transformer Technical Field The application relates to the technical field of current transformer wiring terminals, in particular to a fixing structure of a current transformer wiring terminal. Background In modern power systems, current transformers play an indispensable role as an extremely critical device. The high-current power supply can convert the high current of the primary side into the low current of the secondary side in proportion, so that the access of equipment such as measurement, protection and control is facilitated. The application of the system widely covers various links such as power generation, power transmission, transformation, power distribution, power consumption and the like, and is an important foundation for guaranteeing safe, stable and reliable operation of a power system. For example, in a transformer substation, a current transformer is used for measuring and monitoring the current of a power transmission line, providing an accurate current signal for a relay protection device, and when the line fails, the relay protection device rapidly acts according to the signal transmitted by the current transformer, and cuts off the failed line, so that the safety of the whole power system is protected. However, the conventional current transformer connection terminal has a number of problems in connection. The screw-compression-type connecting terminal is a common connecting mode, and the wire is fixed on the connecting terminal through the pressure generated by tightening the screw. However, in the actual operation process, the mode is complicated, an operator needs to use tools such as a screwdriver to carry out screwing operation, and the mode is time-consuming and labor-consuming and has low efficiency for a large amount of wiring work. Meanwhile, the technical requirement on operators is high by the screw compressing mode, if the screw tightening degree is uneven or insufficient, poor contact of the lead is easily caused, and then the stability of current transmission is affected. In addition, in the long-term use process, due to the influences of vibration, temperature change and environmental factors of equipment, the screw is easy to loosen, so that the contact resistance between the lead and the wiring terminal is increased, and even potential safety hazards such as heating and ignition can be caused when serious, thereby threatening the stable operation of the power system. Disclosure of utility model In order to solve the technical problems, the application provides a fixing structure of a current transformer wiring terminal, which is used for improving the reliability of connection between the current transformer wiring terminal and a wire. In order to achieve the above purpose, the embodiment of the present utility model adopts the following technical scheme: The embodiment of the application provides a current transformer wiring terminal fixing structure which comprises a conductive body and a protective shell, wherein one end of the conductive body is provided with a positioning boss which is used for soldering with a wire, the protective shell comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably connected and enclose a containing cavity, the positioning boss is positioned in the containing cavity, and the conductive body is detachably connected with the upper shell. According to the current transformer binding post fixing structure provided by the embodiment of the application, the positioning boss is arranged at one end of the conductive body, and the positioning boss is in tin soldering connection with the lead, so that tin material can infiltrate into gaps among wire cores to form a metallurgical bonding layer, the connection reliability between the positioning boss and the lead is improved, and the energy loss in the power transmission process can be reduced. In addition, through the holding chamber that upper casing and lower casing formed, can form the protection to the junction of location boss and wire to can further ensure the reliability of connection. In one possible implementation manner, the conductive body includes a connection portion and a body portion, the connection portion is disposed at one end of the body portion, the positioning boss is disposed on the connection portion, the connection portion has a diversion trench, and the diversion trench is located at one side of the positioning boss, which is close to the body portion. In one possible implementation manner, the accommodating cavity is provided with a first positioning protrusion and a second positioning protrusion, the first positioning protrusion is arranged on the upper shell, the second positioning protrusion is arranged on the lower shell, the first positioning protrusion and the second positioning protrusion enclose a mounting cavity, and the body part is positioned in the mounting cavity. In o