Emergency opening device for high-voltage circuit breaker of hydropower station

Abstract

The utility model relates to the technical field of high-voltage circuit breakers, and discloses a hydropower station high-voltage circuit breaker emergency opening device, which comprises a high-voltage cabinet and a protective shell arranged on the high-voltage cabinet, and a rectangular through hole is formed in the middle of the front wall surface of the protective shell in a penetrating manner. A rectangular beating rod fixedly connected with the front end of the beating block is arranged in the rectangular through hole in a penetrating mode, and a reset mechanism is arranged on the front portion of an inner cavity of the protective shell and comprises a reset spring fixedly connected with the front wall face of the inner cavity of the protective shell and a reset mounting plate fixedly connected with the front end of the reset spring; the outer side of the front end of the rectangular beating rod is sleeved with an adjusting rotating ring rotationally connected with the middle of the front wall face of the high-voltage cabinet, a positioning mechanism is arranged on the adjusting rotating ring, and the positioning mechanism comprises two arc-shaped positioning sliding blocks fixedly installed on the inner side wall face of the adjusting rotating ring. According to the utility model, the positioning mechanism is arranged, so that the rectangular beating rod can be conveniently unlocked and locked by the equipment, and the use convenience of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage circuit breakers, in particular to an emergency tripping device for high-voltage circuit breakers in hydropower stations. Background Technique

[0002] After retrieval, the application number 202121219480.2 discloses an emergency tripping device for high-voltage circuit breakers, including a housing. Both ends of the inner wall of the housing are respectively fixedly connected with support rods. A guide bushing is fixedly arranged between the two support rods. First chutes are respectively opened on both sides of the inner wall of the guide bushing. Sliders are respectively slidably connected to one side of the two first chutes. One ends of the two sliders are respectively fixedly arranged on both sides of the middle part of a striking rod. One end of the striking rod passes through the housing and is fixedly connected with a grip. The other end of the striking rod is fixedly connected with a striking block. Reset devices are respectively fixedly arranged at both ends of one side of the inner wall of the housing.

[0003] During the use of the emergency tripping device for high-voltage circuit breakers in the patent application, by sliding the lifting rod upward to separate the clamping column from the clamping groove, and then holding the grip and pushing the striking rod to move the striking rod along the first chute to press the tripping button for tripping. However, during such use, the lifting rod will move downward close to the striking rod under the elastic force of the telescopic spring, which hinders the operation of the staff. The staff needs to always apply force to the lifting rod while operating the striking rod, which brings inconvenience to the use of the device. Therefore, we propose an emergency tripping device for high-voltage circuit breakers in hydropower stations. Content of the Utility Model

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides an emergency tripping device for high-voltage circuit breakers in hydropower stations.

[0005] To achieve the above object, the utility model adopts the following technical solutions. An emergency tripping device for a high-voltage circuit breaker in a hydropower station includes a high-voltage cabinet and a protective housing arranged on the high-voltage cabinet. A striking block is arranged inside the protective housing. On one side of the high-voltage cabinet, there is a tripping button corresponding to the position of the striking block. A rectangular through hole is penetrated through the middle of the front wall surface of the protective housing. A rectangular striking rod fixedly connected to the front end of the striking block is penetrated through the rectangular through hole. A reset mechanism is arranged in the front part of the inner cavity of the protective housing. The reset mechanism includes a reset spring fixedly connected to the front wall surface of the inner cavity of the protective housing and a reset mounting plate fixedly connected to the front end of the reset spring. An adjusting rotating ring rotatably connected to the middle of the front wall surface of the high-voltage cabinet is sleeved on the outer side of the front end of the rectangular striking rod. A positioning mechanism is arranged on the adjusting rotating ring. The positioning mechanism includes two arc-shaped positioning sliders fixedly installed on the inner side wall surface of the adjusting rotating ring. Two arc-shaped positioning grooves adapted to the two arc-shaped positioning sliders are symmetrically opened on the outer wall surface of the front end of the rectangular striking rod. One ends of the two arc-shaped positioning sliders far away from the adjusting rotating ring are respectively clamped inside the two arc-shaped positioning grooves.

[0006] Further, a guiding sleeve is sleeved on the outer side of the rear end of the rectangular striking rod.

[0007] Further, two connecting rods are fixedly connected between the upper and lower ends of the outer wall surface of the guiding sleeve and the upper and lower side wall surfaces of the inner cavity of the protective housing.

[0008] Further, the shape of the inner hole of the guiding sleeve is a long rectangle and is adapted to the outer wall surface of the rectangular striking rod.

[0009] Further, the rear end of the outer wall surface of the rectangular striking rod is in sliding contact with the inner side wall surface of the guiding sleeve.

[0010] Further, the end of the reset mounting plate far away from the reset spring is fixedly connected to the corresponding position of the outer wall surface of the end of the rectangular striking rod located in the inner cavity of the protective housing.

[0011] Further, the two arc-shaped positioning sliders are symmetrically and fixedly installed at the upper and lower positions of the inner side wall surface of the adjusting rotating ring.

[0012] Further, an operation grip is fixedly installed at the front end of the rectangular striking rod.

[0013] Beneficial effects

[0014] The utility model provides an emergency tripping device for a high-voltage circuit breaker in a hydropower station. It has the following beneficial effects:

[0015] 1. The emergency opening device for the high-voltage circuit breaker of a hydropower station, by setting a positioning mechanism, when in use, when an operator needs to perform an emergency opening on the high-voltage circuit breaker, rotate the adjusting rotating ring to drive the two arc-shaped positioning sliders to rotate, so that the two arc-shaped positioning sliders are both moved out of the two arc-shaped positioning grooves to the left and right sides of the rectangular striking rod, releasing the position fixation of the rectangular striking rod. The staff can then hold the operation grip and push the rectangular striking rod to move backward. The rectangular striking rod stretches the return spring through the return mounting plate to drive the striking block to move backward to press the opening button. After the pressing of the opening button is completed, release the operation grip. The return mounting plate drives the rectangular striking rod to move forward for reset under the elastic force of the return spring. At this time, rotate the adjusting rotating ring to drive the two arc-shaped positioning sliders to rotate and move respectively into the two arc-shaped positioning grooves to complete the locking and fixation of the rectangular striking rod. The above operations are simple and practical, with a reasonable and compact structure, realizing the convenient unlocking and locking operations of the device on the rectangular striking rod, and improving the convenience of using the device.

[0016] 2. The emergency opening device for the high-voltage circuit breaker of a hydropower station, by setting a guide sleeve, since the shape of the inner hole of the guide sleeve is a long rectangle and is adapted to the outer wall surface of the rectangular striking rod, the guide sleeve can form a stable limiting and guiding effect on the rectangular striking rod to prevent the rectangular striking rod from rotating relative to the guide sleeve and affecting the normal use of the device, and improving the stability of the device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention, so they do not have technical essential significance.

[0018] Figure 1 It is a cross-sectional view of the emergency opening device for the high-voltage circuit breaker of a hydropower station of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the positioning mechanism of the present invention;

[0020] Figure 3 It is an exploded view of the positioning mechanism of the present invention.

[0021] Legend Explanation:

[0022] 10. High-voltage cabinet; 11. Protective housing; 12. Opening button; 13. Rectangular through-hole; 14. Rectangular striking rod; 15. Striking block; 16. Guide sleeve; 17. Connecting rod; 18. Return mounting plate; 19. Return spring; 20. Adjusting rotating ring; 21. Arc-shaped positioning groove; 22. Arc-shaped positioning slider; 23. Operation grip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] An emergency tripping device for a high-voltage circuit breaker in a hydropower station, as Figures 1-3 shown, includes a high-voltage cabinet 10 and a protective housing 11 provided on the high-voltage cabinet 10. A striking block 15 is arranged inside the protective housing 11. A tripping button 12 corresponding to the position of the striking block 15 is arranged on one side of the high-voltage cabinet 10. Both the tripping button 12 and the striking block 15 are prior arts and will not be elaborated. A rectangular through hole 13 is penetrated through the middle of the front wall surface of the protective housing 11. A rectangular striking rod 14 fixedly connected to the front end of the striking block 15 is penetrated through the rectangular through hole 13. A guide sleeve 16 is sleeved on the outer side of the rear end of the rectangular striking rod 14. Two connecting rods 17 are fixedly connected between the upper and lower ends of the outer wall surface of the guide sleeve 16 and the upper and lower side wall surfaces of the inner cavity of the protective housing 11. The shape of the inner hole of the guide sleeve 16 is a long rectangle and is adapted to the outer wall surface of the rectangular striking rod 14. The outer wall surface of the rear end of the rectangular striking rod 14 is in sliding contact with the inner wall surface of the guide sleeve 16. A reset mechanism is arranged in the front part of the inner cavity of the protective housing 11. The reset mechanism includes a reset spring 19 fixedly connected to the front wall surface of the inner cavity of the protective housing 11 and a reset mounting plate 18 fixedly connected to the front end of the reset spring 19. One end of the reset mounting plate 18 away from the reset spring 19 is fixedly connected to the corresponding position of the outer wall surface of the end of the rectangular striking rod 14 located in the inner cavity of the protective housing 11. An adjusting rotating ring 20 rotatably connected to the middle of the front wall surface of the high-voltage cabinet 10 is sleeved on the outer side of the front end of the rectangular striking rod 14. A positioning mechanism is arranged on the adjusting rotating ring 20. The positioning mechanism includes two arc-shaped positioning sliders 22 fixedly installed on the inner wall surface of the adjusting rotating ring 20. Two arc-shaped positioning grooves 21 adapted to the two arc-shaped positioning sliders 22 are symmetrically opened on the outer wall surface of the front end of the rectangular striking rod 14. One ends of the two arc-shaped positioning sliders 22 away from the adjusting rotating ring 20 are respectively clamped inside the two arc-shaped positioning grooves 21. The two arc-shaped positioning sliders 22 are symmetrically and fixedly installed at the upper and lower positions of the inner wall surface of the adjusting rotating ring 20. An operation grip 23 is fixedly installed at the front end of the rectangular striking rod 14.

[0024] Working principle of the utility model: When in use, when an operator needs to perform an emergency opening of the high-voltage circuit breaker, rotate the adjusting rotating ring 20 to drive the two arc-shaped positioning sliders 22 to rotate, so that the two arc-shaped positioning sliders 22 both move out of the two arc-shaped positioning grooves 21 to the left and right sides of the rectangular striking rod 14, releasing the position fixation of the rectangular striking rod 14. The staff can then hold the operation grip 23 and push the rectangular striking rod 14 to move back and forth forcefully. The rectangular striking rod 14 drives the striking block 15 to move backward by stretching the return spring 19 through the return mounting plate 18 to press the opening button 12. After the pressing of the opening button 12 is completed, release the operation grip 23. The return mounting plate 18 drives the rectangular striking rod 14 to move forward for reset under the elastic force of the return spring 19. At this time, rotate the adjusting rotating ring 20 to drive the two arc-shaped positioning sliders 22 to rotate and move respectively into the two arc-shaped positioning grooves 21 to complete the locking and fixation of the rectangular striking rod 14. The above operations are simple and practical, with a reasonable and compact structure, realizing the convenient unlocking and locking operations of the device for the rectangular striking rod 14 and improving the convenience of use of the device; Since the shape of the inner hole of the guide sleeve 16 is a long rectangle and is adapted to the outer wall surface of the rectangular striking rod 14, the guide sleeve 16 can form a stable limiting and guiding effect on the rectangular striking rod 14 to prevent the rectangular striking rod 14 from rotating relative to the guide sleeve 16 and affecting the normal use of the device, thereby improving the stability of the structure of the device.

[0025] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A high-voltage circuit breaker emergency tripping device for a hydropower station, comprising a high-voltage cabinet (10) and a protective housing (11) arranged on the high-voltage cabinet (10), a striking block (15) being arranged inside the protective housing (11), and a tripping button (12) corresponding to the position of the striking block (15) being arranged on one side of the high-voltage cabinet (10), characterized in that: A rectangular through hole (13) is formed in the middle of the front wall of the protective shell (11), a rectangular hitting rod (14) fixedly connected to the front end of the striking block (15) is formed in the rectangular through hole (13), a reset mechanism is formed in the front of the inner cavity of the protective shell (11), the reset mechanism comprises a reset spring (19) fixedly connected to the front wall of the inner cavity of the protective shell (11) and a reset mounting plate (18) fixedly connected to the front end of the reset spring (19), and a reset spring (19) is formed on the outer side of the front end of the rectangular hitting rod (14) and is connected to the high-voltage cabinet (15). 0), the adjusting rotating ring (20) is rotatably connected to the middle of the front wall surface of the adjusting rotating ring (20), the adjusting rotating ring (20) is provided with a positioning mechanism, the positioning mechanism comprises two arc-shaped positioning slide blocks (22) fixedly mounted on the inner wall surface of the adjusting rotating ring (20), the front end outer wall surface of the rectangular hitting rod (14) is symmetrically provided with two arc-shaped positioning grooves (21) adapted to the two arc-shaped positioning slide blocks (22), and the ends of the two arc-shaped positioning slide blocks (22) away from the adjusting rotating ring (20) are respectively clamped in the inside of the two arc-shaped positioning grooves (21).

2. The emergency tripping device for high-voltage circuit breaker of a hydropower station according to claim 1, characterized in that: A guide sleeve (16) is sleeved on the outer side of the rear end of the rectangular hitting rod (14), and two connecting rods (17) are fixedly connected between the upper and lower ends of the outer wall of the guide sleeve (16) and the upper and lower side walls of the inner cavity of the protective shell (11).

3. The emergency tripping device for high-voltage circuit breaker of a hydropower station according to claim 2, characterized in that: The inner hole of the guide sleeve (16) is in the shape of a long rectangle and matches the outer wall of the rectangular hitting rod (14). The rear end of the outer wall of the rectangular hitting rod (14) is in sliding contact with the inner wall of the guide sleeve (16).

4. The emergency tripping device for high-voltage circuit breaker of a hydropower station according to claim 1, characterized in that: One end of the reset mounting plate (18) away from the reset spring (19) is fixedly connected to a corresponding position of the outer wall surface of one end of the rectangular driving rod (14) located in the inner cavity of the protective shell (11).

5. The emergency tripping device for high-voltage circuit breaker of a hydropower station according to claim 1, characterized in that: The two arc-shaped positioning slide blocks (22) are symmetrically fixedly installed at upper and lower positions on the inner wall surface of the adjusting rotating ring (20).

6. The emergency tripping device for high-voltage circuit breaker of a hydropower station according to claim 1, characterized in that: An operating handle (23) is fixedly mounted on the front end of the rectangular hitting rod (14).

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