High-voltage circuit breaker operation refusal emergency stop device

Abstract

The utility model discloses a high-voltage circuit breaker operation refusal emergency stop device which comprises a contact, a push rod, a support A, a handle, a button, a support B, a spring A, a support C and a spring B. The high-voltage circuit breaker operation refusal emergency stop device is characterized in that the push rod is arranged on the support A; the support A is connected with the support C through a connecting piece; the spring A is placed at the upper end of the support C and is inserted into the pin to be hinged to the support B; the pin is inserted into the lower end of the support C to be hinged to the support B and the handle; the support A, the support B and the handle are connected through the connecting piece; according to the utility model, when the vacuum circuit breaker dolly is at the working position and the vacuum circuit breaker is rejected to operate, an operator does not need to open the cabinet door of the switch cabinet, the vacuum circuit breaker can be subjected to opening operation, the problem of rejected opening of the vacuum circuit breaker caused by electrical loop fault or opening coil burning and the like is avoided, the operation is convenient, and the use is safe.

Description

Technical Field

[0001] The utility model belongs to the technical field of power distribution rooms, and in particular relates to a high-voltage circuit breaker refusal to operate emergency stop device. Background Art

[0002] High-voltage vacuum circuit breaker is an important equipment used in power system. Its main function is to disconnect or connect the current in the circuit. The cabinet is composed of a frame and a trolley-type high-voltage vacuum circuit breaker. When the power system or equipment needs to be maintained or overhauled, the high-voltage vacuum circuit breaker can also be used to disconnect the circuit to ensure the safety of the staff. At the same time, another main function is to protect power equipment. In the power system, high-voltage equipment often needs to withstand the impact of high voltage and large current, which will cause damage to the equipment. The high-voltage vacuum circuit breaker can disconnect the fault current to protect the electrical equipment. There are three tripping modes of the vacuum circuit breaker in the existing switch cabinet: when the current exceeds the set value or a short circuit fault occurs, one is to manually disconnect the switch through the local control button on the switch cabinet panel; the second is to remotely disconnect the switch through the monitoring background; the third is that the relay protection device issues an action instruction to select the fault circuit to trip to protect personal and equipment safety. When the operating current of the equipment exceeds the set value, a short circuit or other problems occur, the current will increase. The high-voltage vacuum circuit breaker should be able to choose to trip the fault circuit or disconnect the circuit breaker by manual background remote control according to the action instruction of the relay protection. However, if the circuit breaker refuses to operate due to mechanical or electrical failure, it will cause damage to the electrical equipment, over-tripping, and even cause the entire power supply system to fail. The failure of the circuit breaker to refuse to operate is very serious for the safe operation of the power system. The above three types of circuit breaker opening methods require the secondary control circuit of the vacuum circuit breaker to energize the opening coil before the opening function of the primary part of the vacuum circuit breaker can be realized. It is impossible to avoid the problem of refusal to operate the vacuum circuit breaker due to electrical circuit failure or burning of the opening coil. Summary of the invention

[0003] The utility model aims to overcome the above-mentioned shortcomings and to provide a high-voltage circuit breaker refusal to operate emergency stop device, which can realize the opening operation of the vacuum circuit breaker without the need for the operator to open the switch cabinet door when the vacuum circuit breaker trolley is in the working position and the vacuum circuit breaker refuses to operate and cannot be opened, thereby avoiding the damage of electrical equipment and over-tripping caused by the vacuum circuit breaker being unable to open due to electrical circuit failure or burning of the opening coil.

[0004] The purpose of the utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0005] The utility model discloses a high-voltage circuit breaker refusal emergency stop device, comprising a contact, a push rod, a bracket A, a handle, a button, a bracket B, a spring A, a bracket C, and a spring B, and is characterized in that: the contact is connected to the push rod, the push rod is provided with a spring B and penetrates into the bracket A and the bracket C, the bracket A is connected to the bracket C through a connecting piece, the spring A is placed on the upper end of the bracket C and a pin is inserted to hinge the bracket B, and the pin is inserted into the lower end to hinge the bracket B and the handle, the bracket A, the bracket B, and the handle are connected through the connecting piece, the button is inserted into the bracket B and a nut is screwed in, and the button contacts the push rod.

[0006] The push rod can move on the bracket C and the bracket A.

[0007] The handle and bracket C can be rotated 90 degrees on the bracket B with the pin as the center.

[0008] Compared with the prior art, the utility model has obvious beneficial effects; from the above technical scheme, it can be seen that: the push rod is connected through the contact, the push rod is placed with a spring B and penetrates into the bracket A and the bracket C, the bracket A is connected to the bracket C through a connecting piece, the spring A is placed on the upper end of the bracket C and inserted into the pin to hinge the bracket B, the lower end is inserted into the pin to hinge the bracket B and the handle, the bracket A, the bracket B, and the handle are connected through the connecting piece, the button is inserted into the bracket B and the nut is screwed in, and the button contacts the push rod. The device is installed on the inside of the cabinet door. When the vacuum circuit breaker trolley is in the test position and the high-voltage circuit breaker refusal emergency stop device is not in use, the high-voltage circuit breaker refusal emergency stop device in the cabinet door moves the handle, the handle and the bracket C rotate 90° on the bracket B with the pin as the center, and the handle and the bracket C drive the bracket A and the push rod to rotate 90° and fold against the inside of the cabinet door. When the vacuum circuit breaker trolley is in the working position and the vacuum circuit breaker refuses to operate, the operator does not need to open the switch cabinet door, but can turn the movable handle to rotate 90°, and the handle and bracket C rotate 90° on the bracket B with the pin as the center. The handle and bracket C drive the bracket A and the push rod to rotate 90° and open perpendicular to the cabinet door. The contact on the push rod is aligned with the manual disconnect button on the vacuum circuit breaker trolley, and the button is pressed. The button pushes the push rod, and the push rod drives the contact. The contact pushes the manual disconnect button on the vacuum circuit breaker trolley. When the circuit breaker refuses to operate, the high-voltage switch cabinet door can be operated without opening it. When the vacuum circuit breaker trolley is in the working position and the vacuum circuit breaker refuses to operate, the operator does not need to open the switch cabinet door to realize the opening operation of the vacuum circuit breaker, avoiding the refusal to operate and opening problem of the vacuum circuit breaker due to electrical circuit failure or burning of the opening coil. It is easy to operate and safe to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is the front view of the utility model;

[0011] Figure 3 yes Figure 2 A cross-sectional view of

[0012] Figure 4 It is a usage state diagram of the utility model;

[0013] Figure 5 It is a folding diagram of the utility model when not in use.

[0014] Marking in the figure

[0015] 1. Contact, 2. Push rod, 3. Bracket A, 4. Nut, 5. Handle, 6. Button, 7. Bracket B, 8. Spring A, 9. Pin, 10. Bracket C, 11. Spring B, 12. Cabinet door. DETAILED DESCRIPTION

[0016] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0017] The utility model discloses a high-voltage circuit breaker refusal emergency stop device, comprising a contact 1, a push rod 2, a bracket A3, a nut 4, a handle 5, a button 6, a bracket B7, a spring A8, a pin 9, a bracket C10, and a spring B11, and is characterized in that: the contact 1 is fixedly connected to the push rod 2, the push rod 2 is provided with a spring B11 and penetrates into the bracket A3 and the bracket C10, the bracket A3 is fixedly connected to the bracket C10 by bolts, a spring A8 is placed on the upper end of the bracket C10 and inserted into the pin 9 to hinge the upper end of the bracket B7, and the lower end is inserted into the pin 9 to hinge the lower end of the bracket B7 and the handle 5, the bracket A3, the bracket B7, and the handle 5 are fixedly connected by bolts, a button 6 is penetrated into the bracket B7 and is screwed into the nut 4 for fixing, the button 6 contacts the push rod 2, the push rod 2 can move on the bracket C10 and the bracket A3, and the handle 5 and the bracket C10 can rotate 90 degrees on the bracket B7 with the pin 9 as the center.

[0018] When using, see Figure 3-4, fix the bracket B7 on the cabinet door 12. When the vacuum circuit breaker trolley is in the test position and the high-voltage circuit breaker emergency stop device is not in use, the high-voltage circuit breaker emergency stop device in the cabinet door is turned on by moving the handle 5. The handle 5 and the bracket C10 are rotated 90° on the bracket B7 with the pin 9 as the center. The handle 5 and the bracket C10 drive the bracket A3 and the push rod 2 to rotate 90° and fold against the inner side of the cabinet door 12. Push rod 2 is on the side of button 6. When the vacuum circuit breaker trolley is in the working position and the vacuum circuit breaker refuses to operate, the operator does not need to open the switch cabinet door. Turn the movable handle 5 to rotate 90°. The handle 5 and bracket C10 rotate 90° on the bracket B7 with the pin 9 as the center. The handle 5 and bracket C10 drive the bracket A3 and push rod 2 to rotate 90° and open perpendicular to the cabinet door 12. The contact 1 on the push rod 2 is aligned with the manual disconnect button on the vacuum circuit breaker trolley. Press button 6. Button 6 pushes push rod 2. Push rod 2 drives contact 1. Contact 1 pushes the manual disconnect button on the vacuum circuit breaker trolley. Release button 6. Spring B11 pushes push rod 2 to move on bracket C10 and bracket A3. Contact 1 leaves the manual disconnect button on the vacuum circuit breaker trolley.

[0019] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-voltage circuit breaker refusal emergency stop device, comprising a contact (1), a push rod (2), a bracket A (3), a handle (5), a button (6), a bracket B (7), a spring A (8), a bracket C (10), and a spring B (11), characterized in that; The contact (1) is connected to the push rod (2), the push rod (2) is provided with a spring B (11) and is inserted into the bracket A (3) and the bracket C (10), the bracket A (3) is connected to the bracket C (10) through a connecting piece, the upper end of the bracket C (10) is provided with a spring A (8) and is inserted into a pin (9) to hinge the bracket B (7), the lower end is inserted into a pin (9) to hinge the bracket B (7) and the handle (5), the bracket A (3), the bracket B (7) and the handle (5) are connected through a connecting piece, the bracket B (7) is inserted into a button (6) and is screwed into a nut (4), and the button (6) is in contact with the push rod (2).

2. A high voltage circuit breaker emergency stop device according to claim 1, characterized in that; The push rod (2) can move on the bracket C (10) and the bracket A (3).

3. A high voltage circuit breaker emergency stop device according to claim 1, characterized in that; The handle (5) and bracket C (10) can be rotated 90 degrees on the bracket B (7) with the pin (9) as the center.

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