Full-solid-seal sealing operation mechanism

Abstract

The invention belongs to the technical field of high-voltage switches, and particularly relates to a full-solid-seal operation mechanism, which comprises an isolation mechanism box and a circuit breaker mechanism box which are arranged up and down, and an interlocking mechanism connected between the isolation mechanism box and the circuit breaker mechanism box, the isolation mechanism box comprises a first back plate and a first front cover, the first back plate and the first front cover are connected to form a sealed installation cavity, an isolation mechanism is installed in the sealed installation cavity of the isolation mechanism box, and the isolation mechanism comprises an isolation operation shaft penetrating out of the first front cover, a grounding operation shaft and a first output shaft; the circuit breaker mechanism box comprises a second back plate and a second front cover, the second back plate and the second front cover are connected to form a sealed installation cavity, a circuit breaker mechanism is installed in the sealed installation cavity of the circuit breaker mechanism box, and the circuit breaker mechanism comprises a closing operation shaft, an opening operation shaft and a circuit breaker indication rotating shaft which penetrate out of the second front cover. The invention provides a full-solid-seal operation mechanism which can be used for high-voltage switch equipment in a severe environment, and the damage probability is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage switches, and in particular relates to a fully sealed operating mechanism. Background Art

[0002] In the power system, the switchgear is an important electrical equipment, and its operation safety and reliability are of vital importance. In order to meet the power system's higher reliability, safety and miniaturization requirements for switchgear, a fully sealed operating mechanism came into being. This new type of operating mechanism uses advanced sealing technology to completely seal the key components of the operating mechanism, effectively improving its insulation performance and protection capabilities, and reducing the impact of the external environment on the operation of the mechanism. In harsh environments such as high temperature, high humidity, dust, strong wind, and salt spray, the sealing of the fully sealed operating mechanism can effectively protect the internal mechanism from the influence of external environmental factors and reduce the possibility of failure. However, the fully sealed operating mechanism still needs to be further improved and optimized in technology. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a fully sealed operating mechanism.

[0004] The technical solution adopted by the present invention is as follows: a fully sealed operating mechanism, comprising an isolation mechanism box and a circuit breaker mechanism box arranged up and down, and an interlocking mechanism connected between the isolation mechanism box and the circuit breaker mechanism box;

[0005] The isolation mechanism box comprises a first back plate and a first front cover, the first back plate and the first front cover are connected to form a sealed installation cavity, an isolation mechanism is installed in the sealed installation cavity of the isolation mechanism box, the isolation mechanism comprises an isolation operation shaft passing through the first front cover, a grounding operation shaft and a first output shaft, and the first front cover is provided with a first wiring hole for wiring the electric wire harness;

[0006] The circuit breaker mechanism box includes a second back plate and a second front cover, the second back plate and the second front cover are connected to form a sealed installation cavity, a circuit breaker mechanism is installed in the sealed installation cavity of the circuit breaker mechanism box, the circuit breaker mechanism includes a closing operation shaft, an opening operation shaft and a circuit breaker indicating shaft passing through the second front cover, and the second front cover is provided with a second wiring hole for connecting the electric wire harness.

[0007] The interlocking mechanism includes an isolation indicator plate, which is sleeved on the first output shaft and rotates with the first output shaft to have an isolation closing state, an isolation opening state, and a grounding state. When the isolation indicator plate is in the isolation closing state, the isolation indicator plate blocks the grounding operating shaft so that the grounding operating shaft cannot be operated. When the isolation indicator plate is in the isolation opening state, the grounding operating shaft is exposed so that the grounding operating shaft can be operated. When the isolation indicator plate is in the grounding state, the isolation indicator plate blocks the isolation operating shaft so that the isolation operating shaft cannot be operated.

[0008] The isolation baffle can only slide in the vertical direction, and has a closing position when it moves to the upper end and blocks the isolation operating shaft and the grounding operating shaft, and an opening position when it moves to the lower end and exposes the isolation operating shaft and the grounding operating shaft. The circuit breaker indicator plate is fixed on the circuit breaker indicator shaft and rotates with the circuit breaker indicator shaft to have a circuit breaker closing state and a circuit breaker opening state. When the circuit breaker indicator plate and the isolation baffle are transmitted by the second interlocking rod that can only slide in the vertical direction, a third interlocking rod that can only slide in the vertical direction is matched between the isolation baffle and the opening operating shaft. The upper end of the third interlocking rod is connected to the isolation baffle and the lower end is in contact with the opening operating shaft.

[0009] The circuit breaker indicator plate is linked and connected with a circuit breaker cam, the lower end of the second interlocking rod abuts against the circuit breaker cam and the upper end is fixedly connected to the isolation baffle. When the circuit breaker indicator plate is in the closed state, the circuit breaker cam rotates upward until the isolation baffle is in the closed position.

[0010] The opening operation shaft is linked with an opening push plate, and the lower end of the third interlocking rod rests on the opening push plate. When the circuit breaker performs an opening operation, the circuit breaker indicator plate rotates to the circuit breaker opening position, the opening push plate rotates downward, and the second interlocking rod and the isolation baffle move downward under the action of gravity, exposing the isolation operation shaft and the grounding operation shaft.

[0011] The grounding cam is fixed on the grounding operating shaft, and rotates with the grounding operating shaft to have a grounding closed state and a grounding open state. A first interlocking rod that can only slide in the vertical direction is provided below the grounding cam, and a fourth interlocking rod that can only slide in the vertical direction is provided below the first interlocking rod. The lower end of the fourth interlocking rod abuts the door lock rod. When the grounding cam is in the grounding closed state, the fourth interlocking rod can move upward, and when the grounding cam is in the grounding open state, the fourth interlocking rod cannot move upward.

[0012] The fourth interlocking rod has a closing limit portion located in the middle, and the closing limit portion cooperates with the closing operating shaft. When the fourth interlocking rod moves upward, the closing operating shaft is blocked so that the closing operating shaft cannot rotate to close the circuit breaker.

[0013] The beneficial effects of the present invention are as follows: The present invention provides a fully sealed operating mechanism that can be used for high-voltage switchgear in harsh environments, reducing the probability of damage, and the overall structure is compact, meeting the specifications of existing switch cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0015] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0016] Figure 2 It is a structural schematic diagram of an isolation mechanism box in an embodiment of the present invention;

[0017] Figure 3 It is a structural schematic diagram of a circuit breaker mechanism box in one embodiment of the present invention;

[0018] Figure 4 A schematic diagram of the structure of an interlocking mechanism in an embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of the interlocking coordination structure of the circuit breaker indicator panel and the closing operation shaft in one embodiment of the present invention;

[0020] Figure 6 It is a structural schematic diagram of a fourth interlocking member in an embodiment of the present invention;

[0021] Figure 7 A schematic diagram of the interlocking structure of the grounding operation shaft in one embodiment of the present invention;

[0022] Figure 8 It is a schematic diagram of the interlocking coordination structure of the closing operation shaft in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0025] The directions and positions mentioned in the present invention, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only directions or positions with reference to the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but are not intended to limit the scope of protection of the present invention.

[0026] A fully sealed operating mechanism, such as Figure 1 As shown, the circuit breaker mechanism box 200 and the isolating mechanism box 100 are arranged vertically, and the interlocking mechanism 300 is connected between the isolating mechanism box 100 and the circuit breaker mechanism box 200 .

[0027] like Figure 2 As shown, the isolation mechanism box 100 includes a first back plate 110 and a first front cover 120. The first back plate 110 and the first front cover 120 are connected to form a sealed installation cavity. An isolation mechanism is installed in the sealed installation cavity of the isolation mechanism box 100. The isolation mechanism includes an isolation operating shaft 410, a grounding operating shaft 420 and a first output shaft 430 that pass through the first front cover 120. The first front cover 120 is provided with a first wiring hole 121 for connecting the electric wire harness. The electrical control circuits in the isolation mechanism in the sealed installation cavity of the isolation mechanism box 100 are all connected to the outside through the first wiring hole 121. Specifically, a wiring device with high waterproof performance can be used, such as an aviation connector. The isolation operating shaft 410, the grounding operating shaft 420 and the first output shaft 430 are all sealed with the first front cover 120, and the seal is hidden in the figure.

[0028] like Figure 3 As shown, the circuit breaker mechanism box 200 includes a second back plate 210 and a second front cover 220, the second back plate 210 and the second front cover 220 are connected to form a sealed installation cavity, a circuit breaker mechanism is installed in the sealed installation cavity of the circuit breaker mechanism box 200, the circuit breaker mechanism includes a closing operation shaft 510, an opening operation shaft 520 and a circuit breaker indication shaft 530 passing through the second front cover 220, the second front cover 220 is provided with a second wiring hole 221 for connecting the electric wire harness, the electrical control circuits in the circuit breaker mechanism in the sealed installation cavity of the circuit breaker mechanism box 200 are all connected to the outside through the second wiring hole 221, and a wiring device with high waterproof performance, such as an aviation wiring device, can be used. The closing operation shaft 510, the opening operation shaft 520 and the circuit breaker indication shaft 530 are all sealed with the second front cover 220, and the seal is hidden in the figure.

[0029] like Figure 4 As shown, the interlocking mechanism 300 includes an isolation indicator plate 310 , an isolation baffle 320 , a grounding cam 330 , a first interlocking rod 340 , a circuit breaker indicator plate 350 , a second interlocking rod 360 , a third interlocking rod 370 , a fourth interlocking rod 380 , and a door lock rod 390 .

[0030] The isolation indicator plate 310 is sleeved on the first output shaft 430, and rotates with the first output shaft 430 to have an isolation closing state, an isolation opening state, and a grounding state. When the isolation indicator plate 310 is in the isolation closing state, the isolation indicator plate 310 blocks the grounding operating shaft 420 so that the grounding operating shaft 420 cannot be operated. When the isolation indicator plate 310 is in the isolation opening state, the grounding operating shaft 420 is exposed so that the grounding operating shaft 420 can be operated. When the isolation indicator plate 310 is in the grounding state, the isolation indicator plate 310 blocks the isolation operating shaft 410 so that the isolation operating shaft 410 cannot be operated, ensuring that the grounding cannot be operated when the isolation is closed and the isolation cannot be operated when the grounding is closed.

[0031] The isolation baffle 320 can only slide in the vertical direction, and has a closing position when it moves to the upper end and blocks the isolation operating shaft 410 and the grounding operating shaft 420, and an opening position when it moves to the lower end and exposes the isolation operating shaft 410 and the grounding operating shaft 420. The circuit breaker indicator plate 350 is fixed on the circuit breaker indicator shaft 530 and rotates with the circuit breaker indicator shaft 530 to have a circuit breaker closing state and a circuit breaker opening state. When the circuit breaker indicator plate 350 and the isolation baffle 320 are transmitted through the second interlocking rod 360 that can only slide in the vertical direction, the isolation baffle 320 and the opening operating shaft 520 are matched with the third interlocking rod 370 that can only slide in the vertical direction. The upper end of the third interlocking rod 370 is connected to the isolation baffle 320 and the lower end is in contact with the opening operating shaft 520. Figure 4 As shown, the circuit breaker indicator plate 350 is linked and connected with the circuit breaker cam 351, the lower end of the second interlocking rod 360 abuts against the circuit breaker cam 351 and the upper end is fixedly connected to the isolation baffle 320, the upper end of the opening operation shaft 520 is linked and matched with the opening push plate 521, and the lower end of the third interlocking rod 370 abuts against the opening push plate 521. When the circuit breaker is opened, the circuit breaker indicator plate 350 rotates to the circuit breaker opening position, the circuit breaker cam 351 rotates downward, and the opening push plate 521 rotates downward. The second interlocking rod 360 and the isolation baffle 320 move downward under the action of gravity, exposing the isolation operating shaft 410 and the grounding operating shaft 420. At this time, the isolation baffle 320 does not affect the isolation operation and the grounding operation. When the circuit breaker performs the closing operation, the circuit breaker indicator plate 350 rotates upward to push the second interlocking rod 360, so that the second interlocking rod 360 pushes the isolation baffle 320 to move the isolation baffle 320 upward to the closing position. At this time, the isolation operating shaft 410 and the grounding operating shaft 420 cannot be operated.

[0032] The grounding cam 330 is fixed on the grounding operating shaft 420, and has a grounding closing state and a grounding opening state as the grounding operating shaft 420 rotates. A first interlocking rod 340 that can only slide in the vertical direction is provided below the grounding cam 330, and a fourth interlocking rod 380 that can only slide in the vertical direction is provided below the first interlocking rod 340. The lower end of the fourth interlocking rod 380 abuts against the door lock rod 390. Figure 6 As shown, the fourth interlocking rod 380 has a grounding abutment portion 381 at the upper end, a closing limit portion 382 at the middle, a door lock abutment portion 383 at the bottom, an interlocking support arm 384 at the middle, and an opening abutment portion 385 at the upper end of the interlocking support arm 384. The upper end of the first interlocking rod 340 abuts against the grounding cam 330 and the lower end abuts against the grounding abutment portion 381. When the grounding cam 330 is in the grounding closing state, the fourth interlocking rod 380 can move upward. When the grounding cam 330 is in the grounding opening state, the fourth interlocking rod 380 cannot move upward to open the door. Figure 8 As shown, the closing limiter 382 cooperates with the closing operating shaft 510, and when the fourth interlocking rod 380 moves upward, the closing operating shaft 510 is blocked so that the closing operating shaft 510 cannot rotate to close the circuit breaker. When the isolation mechanism is in grounding, the cable room door can be opened, and after the cable room door is opened, that is, when the fourth interlocking rod 380 moves to the upper end position, the circuit breaker mechanism cannot be operated and grounding cannot be opened.

[0033] In this embodiment, an interlocking mechanism 300 is arranged outside the isolation mechanism box 100 and the circuit breaker mechanism box 200, and the interlocking mechanism 300 has a simple, compact and reliable structure, making the whole structure more miniaturized.

[0034] Specifically, the sliding limiting methods of the isolation baffle 320, the first interlocking rod 340, the circuit breaker indicator plate 350, the second interlocking rod 360, the third interlocking rod 370, the fourth interlocking rod 380, and the door lock rod 390 are all realized by a matching structure composed of at least two limiting pins arranged on the first front cover 120 or the second front cover 220 and at least two longitudinally arranged strip holes on the interlocking member.

[0035] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A fully sealed operating mechanism, characterized in that: It comprises an isolation mechanism box (100) and a circuit breaker mechanism box (200) arranged vertically, and an interlocking mechanism (300) connected between the isolation mechanism box (100) and the circuit breaker mechanism box (200); The isolation mechanism box (100) comprises a first back plate (110) and a first front cover (120); the first back plate (110) and the first front cover (120) are connected to form a sealed installation cavity; an isolation mechanism is installed in the sealed installation cavity of the isolation mechanism box (100); the isolation mechanism comprises an isolation operating shaft (410) passing through the first front cover (120), a grounding operating shaft (420) and a first output shaft (430); the first front cover (120) is provided with a first wiring hole (121) for connecting an electric wire harness; The circuit breaker mechanism box (200) comprises a second back plate (210) and a second front cover (220); the second back plate (210) and the second front cover (220) are connected to form a sealed installation cavity; a circuit breaker mechanism is installed in the sealed installation cavity of the circuit breaker mechanism box (200); the circuit breaker mechanism comprises a closing operation shaft (510), an opening operation shaft (520) and a circuit breaker indicating rotating shaft (530) passing through the second front cover (220); and a second wiring hole (221) for connecting an electric wire harness is provided on the second front cover (220).

2. The fully sealed operating mechanism according to claim 1, characterized in that: The interlocking mechanism (300) comprises an isolation indicator plate (310), which is sleeved on the first output shaft (430) and rotates with the first output shaft (430) to have an isolation closing state, an isolation opening state, and a grounding state. When the isolation indicator plate (310) is in the isolation closing state, the isolation indicator plate (310) blocks the grounding operating shaft (420) so that the grounding operating shaft (420) cannot be operated. When the isolation indicator plate (310) is in the isolation opening state, the grounding operating shaft (420) is exposed so that the grounding operating shaft (420) can be operated. When the isolation indicator plate (310) is in the grounding state, the isolation indicator plate (310) blocks the isolation operating shaft (410) so that the isolation operating shaft (410) cannot be operated.

3. The fully sealed operating mechanism according to claim 2, characterized in that: The isolation baffle (320) can only slide in the vertical direction, and has a closing position when it moves to the upper end and blocks the isolation operating shaft (410) and the grounding operating shaft (420), and an opening position when it moves to the lower end and exposes the isolation operating shaft (410) and the grounding operating shaft (420). The circuit breaker indicator plate (350) is fixed on the circuit breaker indicator shaft (530) and rotates with the circuit breaker indicator shaft (530) to close the circuit breaker. When the circuit breaker indicator plate (350) and the isolation baffle (320) are in the state and the circuit breaker is in the open state, the second interlocking rod (360) that can only slide in the vertical direction is transmitted, and a third interlocking rod (370) that can only slide in the vertical direction is matched between the isolation baffle (320) and the open operation shaft (520), and the upper end of the third interlocking rod (370) is connected to the isolation baffle (320) and the lower end is in contact with the open operation shaft (520).

4. The fully sealed operating mechanism according to claim 3, characterized in that: The circuit breaker indicator plate (350) is linked and connected to the circuit breaker cam (351); the lower end of the second interlocking rod (360) abuts against the circuit breaker cam (351) and the upper end is fixedly connected to the isolation baffle (320); when the circuit breaker indicator plate (350) is in a closed state, the circuit breaker cam (351) rotates upward until the isolation baffle (320) is in a closed position.

5. The fully sealed operating mechanism according to claim 3, characterized in that: The opening operation shaft (520) is linked with an opening push plate (521), and the lower end of the third interlocking rod (370) abuts against the opening push plate (521). When the circuit breaker performs an opening operation, the circuit breaker indicator plate (350) rotates to the circuit breaker opening position, the opening push plate (521) rotates downward, and the second interlocking rod (360) and the isolation baffle (320) move downward under the action of gravity, while exposing the isolation operation shaft (410) and the grounding operation shaft (420).

6. The fully sealed operating mechanism according to claim 2, characterized in that: The grounding cam (330) is fixed on the grounding operating shaft (420), and rotates with the grounding operating shaft (420) to have a grounding closed state and a grounding open state. A first interlocking rod (340) that can only slide in the vertical direction is provided below the grounding cam (330), and a fourth interlocking rod (380) that can only slide in the vertical direction is provided below the first interlocking rod (340). The lower end of the fourth interlocking rod (380) abuts against the door lock rod (390). When the grounding cam (330) is in the grounding closed state, the fourth interlocking rod (380) can move upwards, and when the grounding cam (330) is in the grounding open state, the fourth interlocking rod (380) cannot move upwards.

7. The fully sealed operating mechanism according to claim 6, characterized in that: The fourth interlocking rod (380) has a closing limit portion (382) located in the middle, and the closing limit portion (382) cooperates with the closing operation shaft (510) to block the closing operation shaft (510) when the fourth interlocking rod (380) moves upward, so that the closing operation shaft (510) cannot rotate to close the circuit breaker.

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