Resistance switch mechanical characteristic measuring device

Abstract

The utility model relates to a resistance switch mechanical characteristic measuring device which comprises a support, a linear displacement sensor is installed on the support, a mechanical characteristic tester is electrically connected to the linear displacement sensor through a sensor wire, a crank arm is fixedly connected to a sliding block of the linear displacement sensor, and the crank arm is electrically connected to the mechanical characteristic tester. And the far end of the crank arm is provided with a communicating hole matched with a guide rod of the resistance switch. According to the utility model, the stroke, the overshoot and the rebound of the resistance switch can be accurately measured, then a worker adjusts the force and the installation position of the buffer of the resistance switch according to the measured overshoot and rebound conditions, the overshoot and rebound values of the moving contact of the resistance switch are ensured to be within a controllable range, the mechanical reliability of the resistance switch is improved, and the reliability of the resistance switch is improved. And electric field breakdown between the contacts is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field, specifically point to a kind of resistance switch mechanical characteristic measuring device. BACKGROUND

[0002] Gas insulated metal-enclosed switchgear (GIS) is widely used in power system, and is important equipment to ensure the safe operation of power system, and its function is to open and close circuit normal load current and short-circuit fault current. For 550kV and above voltage grade gas insulated metal-enclosed switchgear (GIS), often configure breaker with closing resistor, for limiting and eliminating closing overvoltage problem on transmission line.

[0003] And with the breaker with closing resistor application more and more widely, higher requirements are put forward for the reliability of closing resistor. And because the mechanical characteristics of resistance switch are more special, affected by the tolerance size of parts and internal friction of resistance switch, the stroke and characteristic curve of each resistance switch will have slight difference, which is very likely to cause the internal parts of resistance switch to collide when used, affect the mechanical reliability of resistance switch, and the situation of inter-contact electric field breakdown occurs. SUMMARY

[0004] The utility model provides a kind of resistance switch mechanical characteristic measuring device for the deficiency of prior art, which can accurately measure the stroke, overshoot and rebound of resistance switch, then the staff adjusts the strength and installation position of resistance switch buffer according to the measured overshoot and rebound, ensures that the overshoot and rebound value of resistance switch moving contact is in controllable range, improves the mechanical reliability of resistance switch, and avoids the resistance switch mechanical characteristic measuring device with the situation of inter-contact electric field breakdown.

[0005] The utility model is realized through the following technical schemes, provide a kind of resistance switch mechanical characteristic measuring device, including support, linear displacement sensor is installed on the support, mechanical characteristic tester is electrically connected with the linear displacement sensor through sensor line, the slider of the linear displacement sensor is fixedly connected with crank arm, the distal end of the crank arm is provided with the communicating hole that is compatible with resistance switch guide rod.

[0006] The utility model discloses a bracket is set up, and the linear displacement sensor is installed on the bracket, and the mechanical characteristic tester is electrically connected with the linear displacement sensor through the sensor line, and the slider of the linear displacement sensor is fixed with the crank, and the distal end of the crank is provided with the communicating hole that is matched with the resistance switch guide rod, when using the device, the resistance switch guide rod needs to pass through the communicating hole on the crank first, then the resistance switch guide rod is fastened together with the crank by using the nut on the resistance switch guide rod, then the bracket is fixed with the resistance switch mechanism box, the driving mechanism of the mechanical characteristic tester and circuit breaker is connected through the wire, then the mechanical characteristic tester sends the opening and closing action signal to the driving mechanism of circuit breaker, drives circuit breaker to move, makes the resistance switch move under the drive of circuit breaker, at this moment, because the resistance switch guide rod is fastened together with the crank, and the bracket is fixed with the resistance switch mechanism box, so the resistance switch guide rod, the crank and the resistance switch moving contact connected with the resistance switch guide rod all keep fixed, make the resistance switch move on the resistance switch moving contact, the resistance switch guide rod and the crank, so that the resistance switch carries out the opening and closing operation, in this process, the linear displacement sensor and the mechanical characteristic tester can accurately measure the stroke, overshoot and rebound of the resistance switch, then the staff adjusts the strength and installation position of the resistance switch buffer according to the measured overshoot and rebound, guarantees the overshoot and rebound value of the resistance switch moving contact in the controllable range, improves the mechanical reliability of the resistance switch, avoids the appearance touch electrode field breakdown.

[0007] As preferred, the bracket comprises a sensor mounting block fastened with the linear displacement sensor, the front and rear sides of the sensor mounting block are hinged with a rotating plate located on the side of the linear displacement sensor away from the crank, the side of the rotating plate away from the linear displacement sensor is provided with a mounting plate, the mounting plate and the rotating plate are fixedly connected through a connecting plate, and the connection between the rotating plate and the sensor mounting block is located above the linear displacement sensor. The bracket comprises a sensor mounting block fastened with the linear displacement sensor, the front and rear sides of the sensor mounting block are hinged with a rotating plate located on the side of the linear displacement sensor away from the crank, the side of the rotating plate away from the linear displacement sensor is provided with a mounting plate, the mounting plate and the rotating plate are fixedly connected through a connecting plate, and the connection between the rotating plate and the sensor mounting block is located above the linear displacement sensor. The rotating plate, the mounting plate, the connecting plate and the sensor mounting block can not only facilitate the fixation of the device on the resistance switch mechanism box, but also enable the linear displacement sensor and the sensor mounting block to rotate on the rotating plate, so as to realize the movement compensation of the linear displacement sensor in the circumferential direction after installation and effectively compensate the error of the installation position of the linear displacement sensor caused by the machining error of the resistance switch parts.

[0008] As preferred, the slider of the linear displacement sensor is fixed with an adjusting connecting plate, the adjusting connecting plate is provided with a rectangular long hole extending horizontally away from the linear displacement sensor, and the slider of the linear displacement sensor and the toggle lever are fastened and connected through the bolt penetrating the rectangular long hole and the toggle lever. By fixing the slider of the linear displacement sensor with the adjusting connecting plate provided with the rectangular long hole extending horizontally away from the linear displacement sensor, and fastening and connecting the slider of the linear displacement sensor and the toggle lever through the bolt penetrating the rectangular long hole and the toggle lever, the toggle lever can move on the slider of the linear displacement sensor by the rectangular long hole, the adjusting connecting plate and the bolt, so as to realize the distance compensation between the linear displacement sensor and the toggle lever.

[0009] As preferred, the side wall of the mounting plate away from the linear displacement sensor is provided with a threaded hole. By providing the side wall of the mounting plate away from the linear displacement sensor with the threaded hole, the threaded hole can be used by the staff to fix the mounting plate and the resistance switch mechanism box by using the threaded rod.

[0010] As preferred, two threaded holes are arranged on the mounting plate, and the two rotating plates are located between the two threaded holes. By arranging two threaded holes on the mounting plate, and locating the two rotating plates between the two threaded holes, the stability between the device and the resistance switch mechanism box during use can be improved.

[0011] The utility model discloses an advantageous effect for: through setting up support, and installing linear displacement sensor on the support, the mechanical characteristic tester is electrically connected with sensor wire on linear displacement sensor, the slider of linear displacement sensor is fixed with the crank, and the distal end of crank is provided with the communicating hole that is adapted with resistance switch guide rod, when the device is in use, needs first to make resistance switch guide rod pass through the communicating hole on the crank, then uses nut to fasten resistance switch guide rod and crank together on resistance switch guide rod, then fix support and resistance switch mechanism box, connect mechanical characteristic tester and the drive mechanism of circuit breaker through wire, then again through mechanical characteristic tester to the drive mechanism of circuit breaker sends the signal of opening and closing action, drives circuit breaker to move, makes resistance switch move under the drive of circuit breaker, at this moment because resistance switch guide rod and crank fasten together, support also with resistance switch mechanism box fixed, so resistance switch guide rod, crank and resistance switch moving contact that links to each other with resistance switch guide rod all can keep fixed, make resistance switch move on resistance switch moving contact, resistance switch guide rod and crank, thus make resistance switch open and close operation, in this process, utilize linear displacement sensor and mechanical characteristic tester can accurately measure the stroke, overshoot and rebound of resistance switch, then staff again according to the overshoot and rebound situation of measured resistance switch damper's force and installation position, guarantee resistance switch moving contact's overshoot and rebound value in controllable range, improve the mechanical reliability of resistance switch, avoid appearing the electric field breakdown between contacts. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 It is the structure section view of a-a in the utility model;

[0014] Figure 3 It is the use state diagram of the utility model;

[0015] Figure 4 It is Figure 3 It is the structure perspective view of A part in the utility model;

[0016] Figure 5 It is Figure 3 It is the structure perspective view of B part in the utility model;

[0017] Figure 6 It is Figure 3 It is the structure perspective view of C part in the utility model;

[0018] The shown in the figure:

[0019] 1, adjusting connecting plate, 2, crank, 3, communication hole, 4, bolt, 5, rectangular long hole, 6, rotating plate, 7, connecting plate, 8, resistance switch, 9, linear displacement sensor, 10, sensor mounting block, 11, mounting plate, 12, threaded hole, 13, nut, 14, resistance switch guide rod, 15, resistance switch moving contact, 16, mechanical property tester. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of the present application, the present application will be described below through specific embodiments.

[0021] As Figures 1-6 The resistance switch 8 mechanical property measuring device of the utility model, including support, the support installs linear displacement sensor 9 on, the linear displacement sensor 9 is electrically connected with mechanical property tester 16 through sensor line on, the slider of linear displacement sensor 9 is fixedly connected with crank 2, the distal end of crank 2 is provided with the communication hole 3 that is adapted with resistance switch guide rod 14.

[0022] The support includes the sensor mounting block 10 fastened with the linear displacement sensor 9, the front and rear sides of the sensor mounting block 10 are hingedly connected with the rotating plate 6 located on the side of the linear displacement sensor 9 away from the crank 2, the side of the rotating plate 6 away from the linear displacement sensor 9 is provided with the mounting plate 11, the mounting plate 11 and the rotating plate 6 are fixedly connected through the connecting plate 7, the connecting place of the rotating plate 6 and the sensor mounting block 10 is located at the position above the linear displacement sensor 9, the rotating plate 6, the mounting plate 11, the connecting plate 7 and the sensor mounting block 10 not only can conveniently fix the device on the resistance switch 8 mechanism box, but also can make the linear displacement sensor 9 and the sensor mounting block 10 rotate on the rotating plate 6, so that not only the movement compensation of the linear displacement sensor 9 in the circumferential direction after installation can be realized, but also the error of the linear displacement sensor 9 installation position caused by the resistance switch 8 component machining error can be effectively compensated. The adjusting connecting plate 1 is fixedly connected on the slider of the linear displacement sensor 9, the rectangular long hole 5 extending horizontally towards the direction away from the linear displacement sensor 9 is formed on the adjusting connecting plate 1, the bolt 4 passing through the rectangular long hole 5 and the crank 2 is used to fasten and connect the slider of the linear displacement sensor 9 and the crank 2, the rectangular long hole 5, the adjusting connecting plate 1 and the bolt 4 can make the crank 2 move on the slider of the linear displacement sensor 9, and realize the distance compensation between the linear displacement sensor 9 and the crank 2. The threaded hole 12 is formed on the side wall of the mounting plate 11 away from the linear displacement sensor 9, and the threaded hole 12 can be used to conveniently fix the mounting plate 11 and the resistance switch 8 mechanism box by using the threaded rod by the staff. Two threaded holes 12 are arranged on the mounting plate 11, and the two rotating plates 6 are located between the two threaded holes 12, so that the stability between the device and the resistance switch 8 mechanism box during use can be improved.

[0023] The utility model discloses a kind of resistance switch mechanism box fixing devices, including resistance switch 8 mechanism box, resistance switch guiding rod 14, nut 13, bracket 1, elbow arm 2, threaded rod, mounting plate 11 and linear displacement sensor 9, resistance switch guiding rod 14 is fixedly connected to bracket 1, and resistance switch guiding rod 14 is connected with elbow arm 2, and resistance switch guiding rod 14 is connected with nut 13, and resistance switch guiding rod 14 is connected with threaded rod, and threaded rod is connected with mounting plate 11, and mounting plate 11 is connected with linear displacement sensor 9. Figures 1-6 It can be known that the use method of the utility model is as follows: first, resistance switch guiding rod 14 needs to pass through the communication hole 3 on the elbow arm 2, then nut 13 is used on the resistance switch guiding rod 14 to fasten the resistance switch guiding rod 14 and the elbow arm 2 together, then the threaded rod is inserted into the resistance switch 8 mechanism box through the threaded hole 12 on the mounting plate 11, so as to fix the device and the resistance switch 8 mechanism box, connect the mechanical characteristic tester 16 and the driving mechanism of the circuit breaker through the wire, then send the opening and closing action signal to the driving mechanism of the circuit breaker through the mechanical characteristic tester 16, drive the circuit breaker to move, so that the resistance switch 8 moves under the driving of the circuit breaker, at this time, because the resistance switch guiding rod 14 and the elbow arm 2 are fastened together, and the bracket is fixed with the resistance switch 8 mechanism box, so the resistance switch guiding rod 14, the elbow arm 2 and the resistance switch moving contact 15 connected with the resistance switch guiding rod 14 are all kept fixed, so that the resistance switch 8 moves on the resistance switch moving contact 15, the resistance switch guiding rod 14 and the elbow arm 2, so as to make the resistance switch 8 operate closing and opening, in this process, the linear displacement sensor 9 and the mechanical characteristic tester 16 can accurately measure the stroke, overshoot and rebound of the resistance switch 8, then the staff adjusts the strength and installation position of the resistance switch 8 buffer according to the measured overshoot and rebound, to ensure that the overshoot and rebound value of the resistance switch moving contact 15 is in the controllable range.

[0024] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here; the above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model, and the preferred embodiments are described in detail, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A resistance-switching mechanical property measurement apparatus, characterized by: The bracket is provided with a linear displacement sensor (9), a mechanical characteristic tester (16) is electrically connected to the linear displacement sensor (9) through a sensor wire, a toggle lever (2) is fixed to the slider of the linear displacement sensor (9), and a communication hole (3) is formed in the distal end of the toggle lever (2) and matched with a resistance switch guide rod (14).

2. The electrical resistance switch mechanical characteristic measuring apparatus according to claim 1, characterized by: The bracket comprises a sensor mounting block (10) fastened with the linear displacement sensor (9), and a rotating plate (6) is hinged to the front and rear sides of the sensor mounting block (10) and located on the side, away from the toggle lever (2), of the linear displacement sensor (9); an installation plate (11) is arranged on the side, away from the linear displacement sensor (9), of the rotating plate (6); the installation plate (11) and the rotating plate (6) are fixedly connected through a connecting plate (7); and the connecting position of the rotating plate (6) and the sensor mounting block (10) is located above the linear displacement sensor (9).

3. The electrical resistance switch mechanical characteristic measuring apparatus according to claim 1, characterized by: The slider of the linear displacement sensor (9) is fixedly connected with an adjusting connecting plate (1), the adjusting connecting plate (1) is provided with a rectangular long hole (5) extending horizontally towards the direction away from the linear displacement sensor (9), and the slider of the linear displacement sensor (9) and the toggle lever (2) are fastened and connected through a bolt (4) penetrating through the rectangular long hole (5) and the toggle lever (2).

4. The electrical resistance switch mechanical characteristic measuring apparatus according to claim 2, characterized by: The installation plate (11) is provided with a threaded hole (12) in the side wall on the side, away from the linear displacement sensor (9).

5. The electrical resistance switch mechanical characteristic measuring apparatus according to claim 4, characterized by: Two threaded holes (12) are arranged on the installation plate (11), and the two rotating plates (6) are located between the two threaded holes (12).

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