Breaker withstand voltage test device

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker withstand voltage test device, which comprises a connecting wire, a resistance box and a voltage dividing tower, the connecting wire comprises a support, a rotary drum and a conductive column, the voltage dividing tower is placed on the ground and is internally grounded, the top of the voltage dividing tower is connected with a circuit breaker for withstand voltage test, and the resistance box is placed on the ground and is far away from the voltage dividing tower. One end of the connecting wire is connected to the resistance box, the other end of the connecting wire is connected to the voltage dividing tower, the support is arranged on the connecting wire and connected with one end of the resistance box, the rotary drum is arranged on the connecting wire and connected with one end of the voltage dividing tower, and the support is rotationally connected with the rotary drum and installed on the resistance box and the voltage dividing tower respectively. The side frames are arranged at the two ends of the support and rotationally connected with the rotary drum. The support and the rotating drum are used for winding and paying off, it is guaranteed that the connecting line is always suspended and cannot be in contact with the ground, a safe distance is set, a circuit in the connecting line circulates only after the connecting line reaches the safe range, the connecting line can be rapidly repaired and maintained, and testing safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker withstand voltage testing device. Background Art

[0002] The circuit breaker withstand voltage test is mainly divided into the break withstand voltage and the closing withstand voltage. Both tests use high voltage current, which is very dangerous. Due to a large number of safety measures, the test efficiency of the circuit breaker is low and cannot bring economic benefits. Therefore, a withstand voltage test device is needed that can ensure safety and improve test efficiency.

[0003] Chinese patent CN204101682U discloses a vacuum circuit breaker withstand voltage test device, including a frame plate, a cylinder, two conductive column assemblies and a pole assembly. The frame plate is made of insulating material, and the cylinder controls the frame plate to move freely. The two conductive column assemblies are connected to the positive and negative poles of the pressurizing device respectively. The upper conductive column assembly connected to the positive pole of the pressurizing device is fixed on the frame plate, and the lower conductive column assembly connected to the negative pole of the pressurizing device can move up and down in the frame plate. The two conductive column assemblies are automatically connected to the pole assembly under the propulsion of the cylinder. The design has a simple structure, can realize automatic switching of wiring, and improves the safety and production efficiency of production operations.

[0004] There are still several points for improvement in the above scheme: the cable will drag on the ground during automatic wiring, affecting the test accuracy; high voltage will be used in the withstand voltage test, and no safe distance will be established, which is prone to accidents. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a circuit breaker withstand voltage test device, including a connecting line, a resistance box and a voltage divider tower. The connecting line includes a bracket, a rotating drum and a conductive column. The voltage divider tower is placed on the ground and is internally grounded. The top of the voltage divider tower is connected to the circuit breaker for a withstand voltage test. The resistance box is placed on the ground away from the voltage divider tower. One end of the connecting line is connected to the resistance box, and the other end is connected to the voltage divider tower. The bracket is arranged on the connecting line and connected to one end of the resistance box. The rotating drum is arranged on the connecting line and connected to one end of the voltage divider tower. The bracket is rotatably connected to the rotating drum. A plurality of conductive columns are provided, which are respectively installed on the resistance box and the voltage divider tower.

[0006] Preferably, the bracket includes a side frame, a conductive needle and a secondary line. The side frames are arranged at both ends of the bracket and are rotatably connected to the rotating drum. The conductive needle is installed on the side frame and inserted into both sides of the rotating drum. One end of the secondary line is connected to the bracket and the other end is connected to the resistor box.

[0007] Preferably, the side frame includes a telescopic rod and a first spring, the telescopic rod is arranged in the bracket and passes through the bracket to be connected with the side frame, and the first spring is surrounded on the outside of the telescopic rod.

[0008] Preferably, the drum comprises a lifting plate, a groove and a rotating hole, the groove is arranged on the arc surface of the drum, the lifting plate is installed in the groove, the connecting line passes through the drum and is connected to the lifting plate, and the rotating holes are arranged at both ends of the drum.

[0009] Preferably, the lifting plate includes a pin and a second spring, the pin is vertically installed at the bottom of the lifting plate and inserted into the rotating cylinder to communicate with the rotating hole, the second spring is surrounded by the outside of the pin, one end of which is connected to the groove and the other end is connected to the bottom of the lifting plate.

[0010] Preferably, the conductive column comprises an insulating cap, a threaded rod and a joint, the threaded rod is provided at the center of the conductive column, the insulating cap is rotatably connected to the threaded rod, and the joint is provided at both ends of the connecting line and can be engaged with the threaded rod.

[0011] Preferably, the resistance box includes a universal wheel, a first positioning platform and a control console, the universal wheel is installed at the bottom of the resistance box, the first positioning platform is arranged on the upper surface of the resistance box, and the control console is located on the upper surface of the resistance box.

[0012] Preferably, the pressure divider tower includes a base, a lifting ring, a second positioning platform and a third positioning platform. The base is installed directly below the pressure divider tower and is grounded. The lifting ring is fixedly connected to the upper surface of the base. There are multiple second positioning platforms arranged on the upper surface of the base. The third positioning platform is arranged on the top of the pressure divider tower.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model uses a bracket and a rotating drum to wind and release the wire, ensuring that the connecting wire is always suspended in the air and does not drag on the ground. Specifically, the connecting wire is wound on the rotating drum to bundle the cable to prevent the connecting wire from contacting the ground and affecting the test accuracy.

[0015] 2. The utility model is provided with a safety distance. The circuit in the connecting wire will flow only after reaching the safety range. Specifically, when the connecting wire is wound on the drum, the lifting plate is supported by the first spring and the circuit is disconnected. When the connecting wire is straightened, the pin passes through the groove and contacts the conductive pin to form a complete circuit.

[0016] 3. The utility model can quickly inspect and maintain the connecting wires, ensuring the safety of the test. Specifically, the telescopic rod and the first spring are used to ensure that the rotating drum can be quickly installed and disassembled on the bracket, so that the connecting wires can be maintained and replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of a circuit breaker withstand voltage test device.

[0018] Figure 2 It is a stereoscopic diagram of the connecting wires in a circuit breaker withstand voltage test device.

[0019] Figure 3 The present invention is a stereoscopic diagram of a bracket in a circuit breaker withstand voltage test device.

[0020] Figure 4 The present invention is a cross-sectional view of a rotating drum in a circuit breaker withstand voltage test device.

[0021] Figure 5 It is a stereoscopic diagram of a conductive column in a circuit breaker withstand voltage test device.

[0022] Figure 6 It is a three-dimensional diagram of a resistance box in a circuit breaker withstand voltage test device.

[0023] Figure 7 It is a stereoscopic diagram of a voltage divider tower in a circuit breaker withstand voltage test device.

[0024] The numbers in the figure are: 1. connecting line; 2. bracket; 21. side frame; 211. telescopic rod; 212. first spring; 22. conductive needle; 23. secondary line; 3. rotating drum; 31. lifting plate; 311. plug pin; 312. second spring; 32. groove; 33. rotating hole; 4. conductive column; 41. insulating cap; 42. threaded rod; 43. joint; 5. resistor box; 51. universal wheel; 52. first positioning platform; 53. control console; 6. voltage divider tower; 61. base; 62. lifting ring; 63. second positioning platform; 64. third positioning platform. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] See also Figure 1 to Figure 7 As shown, a circuit breaker withstand voltage test device includes a connecting line 1, a resistor box 5 and a voltage divider tower 6. The connecting line 1 includes a bracket 2, a rotating drum 3 and a conductive column 4. The voltage divider tower 6 is placed on the ground and grounded internally, and its top is connected to the circuit breaker for withstand voltage test. The resistor box 5 is placed on the ground away from the voltage divider tower 6. One end of the connecting line 1 is connected to the resistor box 5, and the other end is connected to the voltage divider tower 6. The bracket 2 is arranged on the connecting line 1 and connected to one end of the resistor box 5. The rotating drum 3 is arranged on the connecting line 1 and connected to one end of the voltage divider tower 6. The bracket 2 is rotatably connected to the rotating drum 3. A plurality of conductive columns 4 are provided, which are respectively installed on the resistor box 5 and the voltage divider tower 6.

[0027] In the withstand voltage test of the circuit breaker, the resistor box 5 is used as a manual operating platform, and the voltage divider tower 6 is used to connect to the circuit breaker. Since dangerous high voltage will be used during the test, the voltage divider tower 6 needs to maintain a certain safety distance from the resistor box 5. The device ensures the connection between the voltage divider tower 6 and the resistor box 5 through the connecting wire 1. At the same time, the connecting wire 1 is wound on the drum 3 to bundle the cable to prevent the connecting wire 1 from contacting the ground and affecting the test accuracy. At the same time, the bracket 2 ensures that when the connecting wire 1 is wound on the drum 3, the line is disconnected and non-conductive. When the connecting wire 1 is completely straightened, it means that the resistor box 5 has reached the safe area. At this time, the line in the connecting wire 1 will be connected, and then the next test can be carried out.

[0028] See also Figure 2 to Figure 4 As shown, the bracket 2 includes a side frame 21, a conductive needle 22 and a secondary line 23. The side frames 21 are arranged at both ends of the bracket 2 and are rotatably connected to the rotating drum 3. The conductive needle 22 is installed on the side frame 21 and inserted into both sides of the rotating drum 3. One end of the secondary line 23 is connected to the bracket 2, and the other end is connected to the resistor box 5.

[0029] The side frame 21 is used to install the drum 3, and the conductive needle 22 strengthens the connection strength between the bracket 2 and the drum 3. When the connecting line 1 on the drum 3 is straightened, the conductive needle 22 is connected to the circuit in the drum 3, and the current can flow directly from the secondary line 23 to the connecting line 1.

[0030] See also Figure 3-4 As shown, the side frame 21 includes a telescopic rod 211 and a first spring 212 . The telescopic rod 211 is disposed in the bracket 2 and passes through the bracket 2 to be connected to the side frame 21 . The first spring 212 is surrounded on the outside of the telescopic rod 211 .

[0031] The telescopic rod 211 and the first spring 212 are used to ensure that the drum 3 can be quickly installed and disassembled on the bracket 2, so that the connecting line 1 can be maintained and replaced in time. The quality of the connecting line 1 not only affects the measurement accuracy but is also the key to preventing accidents.

[0032] See also Figure 2 to Figure 4 As shown, the rotating drum 3 includes a lifting plate 31, a groove 32 and a rotating hole 33. The groove 32 is arranged on the arc surface of the rotating drum 3, the lifting plate 31 is installed in the groove 32, the connecting line 1 passes through the rotating drum 3 and is connected to the lifting plate 31, and the rotating holes 33 are arranged at both ends of the rotating drum 3.

[0033] The lifting plate 31 provides positioning for the connecting wire 1 to be installed on the rotating drum 3 , the groove 32 provides guidance for the movement of the lifting plate 31 , and the rotating hole 33 is used for installing the conductive needle 22 on the bracket 2 .

[0034] See also Figure 4As shown, the lifting plate 31 includes a pin 311 and a second spring 312. The pin 311 is vertically installed at the bottom of the lifting plate 31 and inserted into the rotating drum 3 to communicate with the rotating hole 33. The second spring 312 is surrounded by the outer side of the pin 311, one end of which is connected to the groove 32, and the other end is connected to the bottom of the lifting plate 31.

[0035] The pin 311 can contact the conductive pin 22 on the bracket 2. When the two are connected, the circuit in the connecting line 1 is completely connected. When the connecting line 1 is wound on the rotating drum 3, the lifting plate 31 is supported by the first spring 212, the pin 311 is away from the conductive pin 22, and the circuit is disconnected. When the connecting line 1 is straightened, the lifting plate 31 falls in the groove 32, and the pin 311 passes through the groove 32 and contacts the conductive pin 22 to form a complete circuit.

[0036] See also Figure 1 to Figure 5 As shown, the conductive column 4 includes an insulating cap 41, a threaded rod 42 and a joint 43. The threaded rod 42 is provided at the center of the conductive column 4. The insulating cap 41 is rotatably connected to the threaded rod 42. The joint 43 is provided at both ends of the connecting line 1 and can be engaged with the threaded rod 42.

[0037] The insulating cap 41 is used to fix the joint 43 and avoid safety accidents. The threaded rod 42 enables the insulating cap 41 to rotate and fix the joint 43. At the same time, the threaded structure also enhances the firmness to prevent the joint 43 from falling off and affecting the test accuracy.

[0038] See also Figure 1 to Figure 6 As shown, the resistor box 5 includes a universal wheel 51 , a first positioning platform 52 and a control console 53 . The universal wheel 51 is installed at the bottom of the resistor box 5 , the first positioning platform 52 is arranged on the upper surface of the resistor box 5 , and the control console 53 is located on the upper surface of the resistor box 5 .

[0039] The universal wheel 51 is used to facilitate the staff to move the resistance box 5 to a safe range, the first positioning platform 52 is used to install the conductive column 4 on the resistance box 5, and the control console 53 is used for manual operation to adjust specific test items, such as voltage or current measurement.

[0040] See also Figure 1 to Figure 7 As shown, the pressure dividing tower 6 includes a base 61, a lifting ring 62, a second positioning platform 63 and a third positioning platform 64. The base 61 is installed directly below the pressure dividing tower 6 and is grounded. The lifting ring 62 is fixedly connected to the upper surface of the base 61. A plurality of second positioning platforms 63 are arranged on the upper surface of the base 61. The third positioning platform 64 is arranged on the top of the pressure dividing tower 6.

[0041] The base 61 is grounded to improve safety, the lifting ring 62 provides a force point for moving the voltage divider tower 6, the second positioning platform 63 provides an installation position for the conductive column 4 to connect the resistor box 5 and the voltage divider tower 6, and the conductive column 4 on the third positioning platform 64 is used to connect the circuit breaker.

[0042] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A circuit breaker withstand voltage test device, comprising a connecting wire (1), a resistance box (5) and a voltage dividing tower (6); It is characterized in that The connecting line (1) comprises a bracket (2), a rotating drum (3) and a conductive column (4); a voltage divider tower (6) is placed on the ground and is internally grounded, and its top is connected to a circuit breaker for a withstand voltage test; a resistance box (5) is placed on the ground away from the voltage divider tower (6); one end of the connecting line (1) is connected to the resistance box (5), and the other end is connected to the voltage divider tower (6); the bracket (2) is arranged on the connecting line (1) and connected to one end of the resistance box (5); the rotating drum (3) is arranged on the connecting line (1) and connected to one end of the voltage divider tower (6); the bracket (2) is rotatably connected to the rotating drum (3); and a plurality of conductive columns (4) are provided, which are respectively mounted on the resistance box (5) and the voltage divider tower (6).

2. A circuit breaker withstand voltage test device according to claim 1, characterized in that: The support (2) comprises a side frame (21), a conductive needle (22) and a secondary line (23); the side frames (21) are arranged at both ends of the support (2) and are rotatably connected to the rotating drum (3); the conductive needle (22) is mounted on the side frame (21) and inserted into both sides of the rotating drum (3); one end of the secondary line (23) is connected to the support (2) and the other end is connected to the resistance box (5).

3. A circuit breaker withstand voltage test device according to claim 2, characterized in that: The side frame (21) comprises a telescopic rod (211) and a first spring (212); the telescopic rod (211) is arranged in the bracket (2) and passes through the bracket (2) to be connected to the side frame (21); and the first spring (212) is surrounded on the outside of the telescopic rod (211).

4. A circuit breaker withstand voltage test device according to claim 1, characterized in that: The rotating drum (3) comprises a lifting plate (31), a groove (32) and a rotating hole (33); the groove (32) is arranged on the arc surface of the rotating drum (3); the lifting plate (31) is installed in the groove (32); the connecting line (1) passes through the rotating drum (3) and is connected to the lifting plate (31); and the rotating hole (33) is arranged at both ends of the rotating drum (3).

5. A circuit breaker withstand voltage test device according to claim 4, characterized in that: The lifting plate (31) comprises an insertion pin (311) and a second spring (312). The insertion pin (311) is vertically mounted at the bottom of the lifting plate (31) and inserted into the rotating drum (3) to communicate with the rotating hole (33). The second spring (312) is surrounded by the outer side of the insertion pin (311), one end of which is connected to the groove (32) and the other end of which is connected to the bottom of the lifting plate (31).

6. A circuit breaker withstand voltage test device according to claim 1, characterized in that: The conductive column (4) comprises an insulating cap (41), a threaded rod (42) and a joint (43). The threaded rod (42) is provided at the center of the conductive column (4), the insulating cap (41) is rotatably connected to the threaded rod (42), and the joint (43) is provided at both ends of the connecting line (1) and can be engaged with the threaded rod (42).

7. A circuit breaker withstand voltage test device according to claim 1, characterized in that: The resistance box (5) comprises a universal wheel (51), a first positioning platform (52) and a control console (53); the universal wheel (51) is installed at the bottom of the resistance box (5); the first positioning platform (52) is arranged on the upper surface of the resistance box (5); and the control console (53) is located on the upper surface of the resistance box (5).

8. A circuit breaker withstand voltage test device according to claim 1, characterized in that: The pressure dividing tower (6) comprises a base (61), a lifting ring (62), a second positioning platform (63) and a third positioning platform (64); the base (61) is installed directly below the pressure dividing tower (6) and is grounded; the lifting ring (62) is fixedly connected to the upper surface of the base (61); a plurality of second positioning platforms (63) are arranged on the upper surface of the base (61); and the third positioning platform (64) is arranged on the top of the pressure dividing tower (6).

Images