Wiring tool and circuit breaker testing device

Abstract

The utility model provides a wiring tool and a breaker test device. The wiring tool comprises an insulating rod and a mounting rod, the upper end of the insulating rod is provided with an insertion hole, the mounting rod comprises a positioning cylinder and a connecting column connected to the upper end of the positioning cylinder, the positioning cylinder is inserted into the insertion hole, the connecting column is provided with at least one first probe, the first probe is arranged perpendicular to the connecting column, and the first probe is connected with the positioning cylinder. A first probe head is arranged at the tail end, away from the connecting column, of the first probe. According to the utility model, the effective, reliable and safe lap joint of the test wire and the circuit breaker interface can be realized through the handheld wiring tool, and the wiring reliability, safety, flexibility and efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage circuit breaker testing, in particular to a wiring tool and a circuit breaker testing device. Background Art

[0002] High-voltage circuit breakers are key equipment in power systems, used to quickly cut off circuits in the event of short circuits, overloads or other abnormal conditions to protect the system from damage. Its basic working principle is to control the on and off of current by opening and closing the contacts inside the circuit breaker through an operating mechanism. When a system fault occurs, the circuit breaker can quickly cut off the fault current, limit the scope of the accident, and ensure the stable operation of the power system.

[0003] When testing circuit breakers, it is necessary to follow relevant national and international standards and specifications, such as GB / T 1984-2003 "High Voltage AC Circuit Breakers" and IEEE Std C37.012-2011 "High Voltage AC Circuit Breakers". These standards and specifications have clear requirements for test conditions, test methods, test equipment, etc. to ensure the accuracy and reliability of the test results. The test methods for circuit breakers mainly include mechanical properties test, electrical performance test, insulation performance test and contact resistance test. The test equipment includes circuit breaker tester, insulation resistance tester and operating mechanism tester. Through the above equipment and test methods, the performance parameters and reliability of the circuit breaker can be fully evaluated.

[0004] When testing contact resistance, unqualified test results are mostly caused by poor wiring contact of the tester. Therefore, during the test, the operator needs to climb up to adjust the wiring contact points of the circuit breaker to ensure effective contact.

[0005] When testing circuit breakers, you must strictly follow the safety operating procedures and protective measures. Before testing, ensure that the equipment is well grounded to prevent electric shock accidents. During the test, you should wear protective equipment such as insulating gloves and protective glasses to ensure personnel safety. At the same time, you should set up special personnel for supervision and formulate emergency treatment measures to deal with possible accidents. Ensure the distance between mechanical equipment, people and live parts.

[0006] Most outdoor circuit breakers have a vertex height of more than 4 meters, and the vertex height of 220KV circuit breakers is 7 meters. During the test process, ladders or lifts are often used to connect the test line. According to the "Code for Fire Protection Design of Buildings" (GB 50016-2014), the maximum climbing height of indoor ladders shall not exceed 6 meters, and the height of each climbing section shall not exceed 3 meters; the maximum climbing height of outdoor ladders shall not exceed 8 meters, and the height of each climbing section shall not exceed 4 meters. The angle between the ladder and the ground is about 65°. Each pole of the circuit breaker is a round ceramic body. It is easy to slip when using the pole as a support point. Each pole of the circuit breaker is independent. The gravity of the ladder and people acts on the top of the circuit breaker with limited mechanical properties. If there is a slight defect on the circuit breaker support bottle, it will cause personal injury and equipment loss. Using a ladder to connect is extremely dangerous for ultra-high circuit breaker testing. However, using a lift has problems such as being constrained by the site environment and being unable to be used. Utility Model Content

[0007] The utility model aims to provide a wiring tool and a circuit breaker test device, which can realize effective, reliable and safe connection between a test line and a circuit breaker without using a ladder or a lifting vehicle.

[0008] The technical solution of the utility model is: a wiring tool, including an insulating rod and a mounting rod, the upper end of the insulating rod is provided with a socket, the mounting rod includes a positioning cylinder and a connecting column connected to the upper end of the positioning cylinder, the positioning cylinder is inserted into the socket, at least one first probe is provided on the connecting column, the first probe is arranged perpendicular to the connecting column, and a first needle is provided at the end of the first probe away from the connecting column.

[0009] Preferably, the first probe is cylindrical, the first needle head is spherical, and the diameter of the first needle head is larger than the diameter of the first probe.

[0010] Preferably, the insulating rod is a hollow rod.

[0011] Preferably, a first hole is provided on the side wall of the insulating rod forming the insertion hole, and a second hole is provided on the side wall of the positioning cylinder. When the positioning cylinder is inserted into the insertion hole, the first hole and the second hole are aligned, and positioning pins are installed in the first hole and the second hole.

[0012] Preferably, the positioning cylinder and the connecting column are connected via a frustum, the frustum is larger at the top and smaller at the bottom, the upper circular surface is connected to the connecting column, and the lower circular surface is connected to the positioning cylinder.

[0013] Preferably, the diameter of the positioning cylinder is smaller than the diameter of the circular surface at the lower end of the frustum.

[0014] The utility model also provides a circuit breaker test device, comprising a first wiring board, a second wiring board and the above-mentioned wiring tool, wherein the second wiring board is provided with at least one second wiring hole, one end of the first wiring board is provided with a second probe, the other end of the first wiring board is provided with a first wiring hole and a card hole for inserting the first probe, the second probe is inserted into the second wiring hole, and a test line is installed in the first wiring hole.

[0015] Preferably, a second needle is provided at the end of the second probe, the second probe is cylindrical, the second needle is spherical, and the diameter of the second needle is greater than the diameter of the second probe.

[0016] Preferably, the clamping hole comprises a circular hole and a long hole connected to the upper end of the circular hole, the first needle head is in clearance fit with the circular hole at the circular hole, and the width dimension W of the long hole is smaller than the diameter of the circular hole.

[0017] Preferably, the first wiring board includes a first board arranged vertically and a second board horizontally connected between the first board and the second probe, the second probe and the first board are located on the same side of the second board, and the first wiring hole and the card hole are both arranged on the first board.

[0018] Compared with the related art, the beneficial effects of the utility model are:

[0019] 1. The circuit breaker test device can realize effective, reliable and safe connection between the test line and the circuit breaker interface through a handheld wiring tool, greatly improving the reliability, safety, flexibility and efficiency of wiring;

[0020] 2. The wiring tool comes with an insulating rod. The length of the insulating rod matches the installation height of the circuit breaker. It not only plays an insulating role, but also can easily install the first terminal block connected with the test line on the second terminal block (circuit breaker terminal block) to achieve installation and quick connection;

[0021] 3. A first needle is provided at the end of the first probe of the wiring tool. The upper end of the clamping hole of the first wiring board is a slightly smaller long hole. When installing the first wiring board, the first probe is placed at the long hole, and the size of the first needle is larger than the width W of the long hole, which effectively prevents the first wiring board from being separated from the connecting column and causing the first wiring board to fall off.

[0022] Fourth, the circuit breaker test device realizes flexible and safe installation and disassembly, eliminates the instability, height limitation, danger, etc. of ladder climbing in the conventional test process, and also eliminates the unfavorable factors such as the climbing distance and safety distance of the lifting vehicle, thereby reducing labor intensity and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic diagram of the structure of the wiring tool provided by the utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the mounting rod;

[0025] Figure 3 A schematic diagram of the structure of the circuit breaker test device provided by the utility model;

[0026] Figure 4 It is a structural schematic diagram of the first wiring board.

[0027] In the accompanying drawings: 1. wiring tool; 11. insulating rod; 111. jack; 112. first hole; 12. mounting rod; 121. positioning cylinder; 122. connecting column; 123. first probe; 124. first needle; 125. second hole; 126. frustum; 2. first wiring board; 21. first plate; 22. second plate; 23. second probe; 24. first wiring hole; 25. card hole; 251. round hole; 252. long hole; 26. second needle; 3. second wiring board; 31. second wiring hole. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0029] like Figure 1 As shown, a wiring tool 1 provided in this embodiment includes an insulating rod 11 and a mounting rod 12. The insulating rod 11 is a hollow cylindrical structure, which reduces its own weight and is convenient to hold. The insulating rod 11 can be adjusted in length by a plurality of sequential insertion and splicing methods, which is suitable for wiring of circuit breakers at different heights. The two ends of the hollow insulating rod 11 are connected, so that a socket 111 is formed near the end of the insulating rod 11. The socket 111 is inserted into another insulating rod 11 (the diameter of one end of the insulating rod 11 can be designed to be larger than the diameter of the other end to facilitate insertion, or a sleeve can be used to connect the two insulating rods 11). A first hole 112 is provided on the upper end side wall of the insulating rod 11 at the upper end, and the socket 111 of the upper insulating rod 11 is used to insert the connecting column 122 of the mounting rod 12.

[0030] like Figure 2 As shown, the mounting rod 12 includes a positioning cylinder 121 , a connecting column 122 , a first probe 123 , a first needle head 124 , a second hole 125 and a frustum 126 .

[0031] The positioning cylinder 121 is a hollow structure, and its top is connected to a frustum 126. The frustum 126 is larger at the top and smaller at the bottom, and the upper circular surface is connected to the connecting column 122, and the lower circular surface is connected to the positioning cylinder 121. The diameter of the positioning cylinder 121 is smaller than the diameter of the lower circular surface of the frustum 126, so that the outer edge of the lower circular surface of the frustum 126 can contact the upper surface of the insulating rod 11 to achieve positioning.

[0032] Two first probes 123 are disposed on the connecting column 122. The first probes 123 are disposed perpendicular to the connecting column 122. Each of the first probes 123 is provided with a first needle 124 at the end away from the connecting column 122. The first probes 123 are cylindrical, and the first needles 124 are spherical. The diameter of the first needles 124 is greater than the diameter of the first probes 123.

[0033] like Figure 1 The second hole 125 is provided on the side wall of the positioning tube 121 . When the positioning tube 121 is inserted into the insertion hole 111 , the first hole 112 and the second hole 125 are aligned, and positioning pins are installed in the first hole 112 and the second hole 125 .

[0034] like Figure 3 As shown, the utility model also provides a circuit breaker test device, comprising a first wiring board 2, a second wiring board 3 and the above wiring tool 1. The second wiring board 3 is a wiring terminal of the circuit breaker, and is provided with a plurality of second wiring holes 31.

[0035] The first wiring board 2 includes a first plate 21, a second probe 23, and a second plate 22 horizontally connected between the first plate 21 and the second probe 23. The second probe 23 and the first plate 21 are located on the same side of the second plate 22. The first plate 21 is provided with a first wiring hole 24 and a clamp hole 25. A test line is installed in the first wiring hole 24. One end of the test line is connected to the first wiring board 2 through the first wiring hole 24, and the other end of the test line is connected to a corresponding test instrument. The second probe 23 is inserted into one of the second wiring holes 31.

[0036] A second needle 26 is disposed at the end of the second probe 23 . The second probe 23 is cylindrical, and the second needle 26 is spherical. The diameter of the second needle 26 is greater than that of the second probe 23 .

[0037] The number and position of the clamping holes 25 correspond to those of the first probes 123. The clamping holes 25 include a circular hole 251 and a long hole 252 connected to the upper end of the circular hole 251. The first needle 124 is in a clearance fit with the circular hole 251 at the circular hole 251. The width W of the long hole 252 is smaller than the diameter of the circular hole 251. The circular hole 251 and the long hole 252 form a lock hole structure similar to that on a door lock (such as Figure 4 as shown).

[0038] During installation, apply a layer of lubricating oil on the inner wall of the circular hole 251 of the clamping hole 25, and apply a little conductive paste on the inner wall of the first wiring hole 24 and the outer surface of the second probe 23. Connect the test line to the first wiring hole 24. Then select an insulating rod 11 of a suitable length or splice an insulating rod 11 of a suitable length according to the height of the circuit breaker, and connect the insulating rod 11 to the mounting rod 12.

[0039] The first probe 123 on the mounting rod 12 is inserted into the round hole 251 of the first wiring board 2, and the first wiring board 2 is placed in a vertical state. At this time, the first probe 123 slides into the long hole 252, and the first needle 124 is placed on the other side of the first wiring board 2 to prevent the first wiring board 2 from falling from the mounting rod 12.

[0040] When holding the insulating rod 11 to lift the installation rod 12, multiple insulating rods 11 are spliced ​​one by one as needed until the height of the installation rod 12 exceeds the height of the circuit breaker (i.e., the height of the second terminal block 3). During the lifting process of the insulating rod 11, the test line must droop naturally and the insulating rod 11 must be lifted vertically.

[0041] When rotating the insulating rod 11, the second probe 23 on the first terminal block 2 is aligned with one of the second wiring holes 31 on the second terminal block 3 and slowly lowered until the second needle 26 is completely exposed at the bottom of the second terminal block 3. Because the length of the second probe 23 is greater than the thickness of the second terminal block 3, the contact area between the second probe 23 and the second wiring hole 31 can be increased, and reliable contact between the two can be achieved. During the slow lowering process, the insulating rod 11 can be rotated to make the second probe 23 effectively contact the second wiring hole 31. Start the test. When the test is completed and needs to be dismantled, the first terminal block 2 is dismantled in the opposite direction of the above steps.

[0042] The insulating rod of the utility model is connected to the mounting rod as a whole and is used as a movable lifting rod. The test line is connected to the first wiring board. During installation, the first probe on the lifting rod is clamped with the clamp hole on the first wiring board, the first wiring board with the test line is lifted to the position of the circuit breaker (the second wiring board), and the second probe is inserted into the second wiring hole 31 to complete the overlap of the test line. A reliable wiring method can be completed at one time during the test process, overcoming the influence of adverse factors such as oxidation and dirt on the circuit breaker terminal.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wiring tool, characterized in that: The invention comprises an insulating rod (11) and a mounting rod (12), wherein the upper end of the insulating rod (11) is provided with a plug hole (111), and the mounting rod (12) comprises a positioning cylinder (121) and a connecting column (122) connected to the upper end of the positioning cylinder (121), wherein the positioning cylinder (121) is inserted into the plug hole (111), and the connecting column (122) is provided with at least one first probe (123), wherein the first probe (123) is arranged perpendicular to the connecting column (122), and a first needle (124) is provided at the end of the first probe (123) away from the connecting column (122).

2. The wiring tool according to claim 1, characterized in that: The first probe (123) is cylindrical, the first needle (124) is spherical, and the diameter of the first needle (124) is greater than the diameter of the first probe (123).

3. The wiring tool according to claim 1, characterized in that: The insulating rod (11) is a hollow rod.

4. The wiring tool according to claim 1, characterized in that: A first hole (112) is provided on the side wall of the insulating rod (11) forming the insertion hole (111), and a second hole (125) is provided on the side wall of the positioning cylinder (121). When the positioning cylinder (121) is inserted into the insertion hole (111), the first hole (112) and the second hole (125) are aligned, and positioning pins are installed in the first hole (112) and the second hole (125).

5. The wiring tool according to claim 1, characterized in that: The positioning cylinder (121) and the connecting column (122) are connected via a frustum (126); the frustum (126) is larger at the top and smaller at the bottom, with an upper circular surface connected to the connecting column (122) and a lower circular surface connected to the positioning cylinder (121).

6. The wiring tool according to claim 5, characterized in that: The diameter of the positioning cylinder (121) is smaller than the diameter of the circular surface at the lower end of the frustum (126).

7. A circuit breaker test device, comprising a second wiring board (3), wherein the second wiring board (3) is provided with at least one second wiring hole (31), characterized in that: It also comprises a first wiring board (2) and a wiring tool as claimed in any one of claims 1 to 6, wherein a second probe (23) is provided at one end of the first wiring board (2), and a first wiring hole (24) and a clamping hole (25) for inserting the first probe (123) are provided at the other end of the first wiring board (2), the second probe (23) is inserted into the second wiring hole (31), and a test line is installed in the first wiring hole (24).

8. The circuit breaker test device according to claim 7, characterized in that: A second needle (26) is provided at the end of the second probe (23); the second probe (23) is cylindrical, the second needle (26) is spherical, and the diameter of the second needle (26) is greater than the diameter of the second probe (23).

9. The circuit breaker test device according to claim 7, characterized in that: The clamping hole (25) comprises a circular hole (251) and a long hole (252) connected to the upper end of the circular hole (251); the first needle head (124) is clearance-matched with the circular hole (251) at the circular hole (251); and a width dimension W of the long hole (252) is smaller than a diameter of the circular hole (251).

10. The circuit breaker test device according to claim 7, characterized in that: The first wiring board (2) comprises a first board (21) arranged vertically and a second board (22) horizontally connected between the first board (21) and the second probe (23), the second probe (23) and the first board (21) being located on the same side of the second board (22), and the first wiring hole (24) and the clamping hole (25) being both arranged on the first board (21).

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