Breaker running-in device

Abstract

The utility model relates to a breaker running-in device, which belongs to the breaker running-in technical field and comprises a bottom plate, a mechanism support, a spring operating mechanism, a crank arm, a closing spring, an opening spring and a substitution mechanism, the mechanism support is fixed at the top of the bottom plate, and the spring operating mechanism is fixed at the top of the mechanism support. According to the circuit breaker running-in device, the spring is compressed to store energy through the spring operating mechanism, after the requirement is met, the circuit breaker is located at the closing position, the closing spring is in the energy release state, the opening electromagnet button is knocked, the opening spring releases energy, the energy can be transmitted to the crank arm, and due to the fact that the crank arm is connected with the replacement mechanism, the replacement mechanism can replace the replacement mechanism. According to the technical scheme, the replacement mechanism can be used for providing resistance to slow down the opening speed, the situation that the opening speed of a circuit breaker which is not inflated with gas is too high and does not meet the technological requirement is avoided, the work of inflating and recycling gas during running-in of the circuit breaker is omitted, and the damper is used for replacement, so that the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker running-in, in particular to a circuit breaker running-in device. Background Art

[0002] High voltage switch circuit breaker is a key power system equipment, mainly used to control, protect and isolate circuits. It can cut off or connect circuits to prevent electrical equipment from overload or failure and ensure the safe operation of the power system.

[0003] For high-voltage switch circuit breakers, taking 220kV products as an example, it is required to conduct no less than 200 mechanical operation tests during factory testing to ensure that the contacts are fully run-in. In actual operation, the inside of the circuit breaker is filled with high-pressure SF6 gas, and the pressure is about 5 times the atmospheric pressure. The opening speed requirement of the circuit breaker is 7.2-8m / s. Since it takes time to fill the product with high-pressure SF6 gas and then recover the gas after the running-in test, each gas filling and recovery takes about 6 hours, and may have an impact on the environment (SF6 leakage), it needs to be operated without gas. However, without gas (1 times the atmospheric pressure), there is no resistance to compressing high-pressure gas, and the circuit breaker speed will reach 9+m / s, which does not meet the running-in speed requirements. Therefore, a circuit breaker running-in device is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a circuit breaker running-in device, which has the advantages of being able to run-in non-gas-filled circuit breakers, and solves the problem that the running-in test requires gas filling and gas recovery, which is time-consuming and affects efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit breaker running-in device, comprising a base plate, a mechanism bracket, a spring operating mechanism, a crank arm, a closing spring, an opening spring and a replacement mechanism, wherein the mechanism bracket is fixed to the top of the base plate, the spring operating mechanism is fixed to the top of the mechanism bracket, the opening spring and the closing spring are both installed with the spring operating mechanism, the crank arm is connected with the opening spring, and one end of the crank arm is connected with the spring operating mechanism;

[0006] The replacement mechanism includes a damper rotatably connected to the crank arm, a base is fixedly installed at one end of the damper away from the crank arm, the base is fixed to the mechanism bracket, a connecting piece is fixedly installed at the telescopic end of the damper, a connecting shaft is fixedly installed inside the connecting piece, a connecting groove is opened at the crank arm corresponding to the connecting shaft, and the connecting shaft slides in the connecting groove.

[0007] Furthermore, the bottom end of the crank arm is rotatably connected to a connecting head, the left end of the connecting head is fixedly mounted with a connector, and the left end of the connector is mounted with a circuit breaker.

[0008] Furthermore, the connector is U-shaped, and a slider is fixedly installed on the inner side of the connector, a slide groove is provided on the surface of the mechanism bracket, and the slider is located inside the slide groove.

[0009] Furthermore, a support rod is fixedly mounted on the front side of the connector, a slot is formed on the crank arm corresponding to the support rod, and the support rod is located inside the slot.

[0010] Furthermore, a limiting plate is fixedly mounted on one end of the support rod that passes through and extends to the outside of the slot, and the diameter of the limiting plate is greater than the width of the slot.

[0011] Furthermore, a baffle is fixedly mounted on the surface of the mechanism bracket, the baffle is located on the right side of the crank arm, and the surface of the baffle is wrapped with a rubber pad.

[0012] Furthermore, the spring operating mechanism is provided with an opening electromagnet and a closing electromagnet respectively.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The circuit breaker running-in device utilizes a spring operating mechanism to compress the spring to store energy. After the requirements are met, the circuit breaker is in the closed position and the closing spring is in the energy release state. By tapping the opening electromagnet button, the opening spring releases the energy, and the energy is transferred to the crank arm. Since the crank arm is connected with a replacement mechanism, the replacement mechanism can be used to provide resistance to slow down the opening speed, so as to avoid the circuit breaker that is not inflated with gas from opening too fast and failing to meet the process requirements. Therefore, the device eliminates the need to inflate and recover gas during the circuit breaker running-in, and utilizes a damper for substitution, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A magnified view of the local structure of the middle part A;

[0017] Figure 3 This is a top view of the connection structure between the slider and the slide groove of the utility model;

[0018] Figure 4 This is a front view of the circuit breaker structure of the utility model.

[0019] In the figure: 1 bottom plate, 2 mechanism bracket, 3 crank arm, 4 closing spring, 5 opening spring, 6 replacement mechanism, 601 damper, 602 base, 603 connecting piece, 604 connecting shaft, 605 connecting groove, 7 spring operating mechanism, 8 connecting head, 9 connector, 10 circuit breaker, 11 slider, 12 slide groove, 13 support rod, 14 slot, 15 limit plate, 16 baffle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 A circuit breaker running-in device in this embodiment includes a base plate 1, a mechanism bracket 2, a spring operating mechanism 7, a crank arm 3, a closing spring 4, an opening spring 5 and a replacement mechanism 6. The mechanism bracket 2 is fixed to the top of the base plate 1, the spring operating mechanism 7 is fixed to the top of the mechanism bracket 2, the opening spring 5 and the closing spring 4 are both installed with the spring operating mechanism 7, the crank arm 3 is connected to the opening spring 5, and one end is connected to the spring operating mechanism 7, the spring operating mechanism 7 is provided with an opening electromagnet and a closing electromagnet respectively, and a baffle 16 is fixedly installed on the surface of the mechanism bracket 2, the baffle 16 is located on the right side of the crank arm 3, and the surface of the baffle 16 is wrapped with a rubber pad.

[0022] Among them, the bottom end of the crank arm 3 is rotatably connected to the connecting head 8, the left end of the connecting head 8 is fixedly installed with a connector 9, the left end of the connector 9 is installed with a circuit breaker 10, the connecting head 8 is U-shaped, and a slider 11 is fixedly installed on the inner side of the connecting head 8, a slide groove 12 is opened on the surface of the mechanism bracket 2, and the slider 11 is located inside the slide groove 12. When the connecting head 8 moves to open and close the switch, it ensures that the connecting head 8 moves more stably.

[0023] In addition, a support rod 13 is fixedly installed on the front of the connector 8, and a slot 14 is provided at the crank arm 3 corresponding to the support rod 13. The support rod 13 is located inside the slot 14, and a limit plate 15 is fixedly installed at one end of the support rod 13 that passes through and extends outside the slot 14. The diameter of the limit plate 15 is greater than the width of the slot 14. By providing the limit plate, the connector 8 can be effectively prevented from being separated from the crank arm 3 during long-term high-frequency operation, thereby increasing the stability of the device.

[0024] The spring operating mechanism 7 is used to compress the spring to store energy. After the requirements are met, the circuit breaker 10 is in the closed position and the closing spring 4 is in the energy release state. By tapping the opening electromagnet button, the opening spring 5 releases the energy, and the energy will be transferred to the crank arm 3. Since the crank arm is connected to the alternative mechanism 6, the alternative mechanism 6 can be used to provide resistance to slow down the opening speed, so as to avoid the circuit breaker that is not inflated with gas from opening too fast and not meeting the process requirements.

[0025] Specifically, the replacement mechanism 6 includes a damper 601 rotatably connected to the crank arm 3, a base 602 is fixedly installed at one end of the damper 601 away from the crank arm 3, the base 602 is fixed to the mechanism bracket 2, a connecting piece 603 is fixedly installed at the telescopic end of the damper 601, a connecting shaft 604 is fixedly installed inside the connecting piece 603, a connecting groove 605 is opened at the crank arm 3 corresponding to the connecting shaft 604, and the connecting shaft 604 slides in the connecting groove 605.

[0026] The crank arm 3 is connected with a damper 601. When the crank arm 3 is moving, the connecting shaft 604 is located in the connecting groove 605 on the crank arm 3. Therefore, the connecting shaft 604 can be used to drive the connecting member 603 to move. The connecting member 603 is connected to the damper 601. Therefore, the damper 601 provides resistance to slow down the speed of the crank arm 3, and indirectly slows down the opening and closing speed of the circuit breaker 10. The resistance provided by the damper 601 is determined after debugging to ensure that the speed can be maintained at 7.2-8m / s when the circuit breaker 10 is opened and closed.

[0027] The working principle of the above embodiment is:

[0028] The spring operating mechanism 7 is used to compress the spring to store energy. After the requirements are met, the circuit breaker 10 is in the closing position and the closing spring 4 is in the energy release state. By tapping the opening electromagnet button, the opening spring 5 releases the energy, and the energy is transferred to the crank arm 3. The crank arm 3 is connected with a damper 601. When the crank arm 3 is moving, the connecting shaft 604 is located in the connecting groove 605 on the crank arm 3. Therefore, the connecting shaft 604 can be used to drive the connecting member 603 to move. The connecting member 603 is connected to the damper 601, so the damper 601 provides The resistance slows down the speed of the crank arm 3. Similarly, when the closing electromagnet button is struck, the spring operating mechanism 7 and the closing spring 7 drive the crank arm 3 to move, thereby indirectly slowing down the opening and closing speeds of the circuit breaker 10, effectively preventing the circuit breaker that is not inflated with gas from opening too fast and not meeting the process requirements. Therefore, the work of inflating and recovering gas during the running-in of the circuit breaker can be omitted, and the damper is used instead, which greatly improves the work efficiency, compresses the time for charging and discharging gas from 6 hours to 0, and eliminates the possibility of causing environmental impact in this link.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker running-in device, characterized in that: The invention comprises a base plate (1), a mechanism support (2), a spring operating mechanism (7), a crank arm (3), a closing spring (4), an opening spring (5) and a replacement mechanism (6), wherein the mechanism support (2) is fixed on the top of the base plate (1), the spring operating mechanism (7) is fixed on the top of the mechanism support (2), the opening spring (5) and the closing spring (4) are both mounted on the spring operating mechanism (7), and the crank arm (3) is connected to the opening spring (5), and one end of the crank arm (3) is connected to the inside of the spring operating mechanism (7); The replacement mechanism (6) includes a damper (601) rotatably connected to the crank arm (3); a base (602) is fixedly installed at one end of the damper (601) away from the crank arm (3); the base (602) is fixed to the mechanism bracket (2); a connecting piece (603) is fixedly installed at the telescopic end of the damper (601); a connecting shaft (604) is fixedly installed inside the connecting piece (603); a connecting groove (605) is provided at the crank arm (3) corresponding to the connecting shaft (604), and the connecting shaft (604) slides in the connecting groove (605).

2. A circuit breaker running-in device according to claim 1, characterized in that: The bottom end of the crank arm (3) is rotatably connected to a connecting head (8), the left end of the connecting head (8) is fixedly mounted with a connector (9), and the left end of the connector (9) is mounted with a circuit breaker (10).

3. A circuit breaker running-in device according to claim 2, characterized in that: The connecting head (8) is U-shaped, and a sliding block (11) is fixedly installed on the inner side of the connecting head (8). A sliding groove (12) is provided on the surface of the mechanism bracket (2), and the sliding block (11) is located inside the sliding groove (12).

4. A circuit breaker running-in device according to claim 3, characterized in that: A support rod (13) is fixedly mounted on the front of the connecting head (8), a slot (14) is provided on the crank arm (3) corresponding to the support rod (13), and the support rod (13) is located inside the slot (14).

5. A circuit breaker running-in device according to claim 4, characterized in that: A limiting plate (15) is fixedly mounted on one end of the support rod (13) that passes through and extends to the outside of the slot (14), and the diameter of the limiting plate (15) is greater than the width of the slot (14).

6. A circuit breaker running-in device according to claim 1, characterized in that: A baffle (16) is fixedly mounted on the surface of the mechanism bracket (2); the baffle (16) is located on the right side of the crank arm (3), and the surface of the baffle (16) is wrapped with a rubber pad.

7. A circuit breaker running-in device according to claim 1, characterized in that: The spring operating mechanism (7) is provided with an opening electromagnet and a closing electromagnet respectively.

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