Full-solid-seal sealing operation mechanism
By designing a fully sealed operating mechanism for the isolation mechanism box, circuit breaker mechanism box, and interlocking mechanism, the problem of insufficient sealing was solved, achieving high reliability and miniaturization in harsh environments.
Patent Information
- Application Number
- CN202520118682.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-19
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-19
AI Technical Summary
Existing fully solid-sealed operating mechanisms have insufficient sealing performance in harsh environments, affecting reliability and safety, and their structure is not compact enough.
A fully sealed operating mechanism was designed, comprising an isolation mechanism box, a circuit breaker mechanism box, and an interlocking mechanism. It adopts a sealed mounting cavity and a wiring device with high waterproof performance. The linkage and limit of the operating shaft are achieved through the cooperation of the interlocking rod and the cam, ensuring sealing and reliability.
It improves the sealing performance and reliability of the fully solid-sealed operating mechanism in harsh environments, reduces the probability of failure, and meets the requirements for miniaturization.
Smart Images
Figure CN223771021U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of high voltage switch technology, specifically relating to a fully solid-sealed operating mechanism. Background Technology
[0002] In power systems, switchgear, as crucial electrical equipment, demands paramount safety and reliability in its operation. To meet the higher reliability, safety, and miniaturization requirements of power systems for switchgear, fully enclosed sealed operating mechanisms have emerged. This new type of operating mechanism employs advanced sealing technology to completely seal key components, effectively improving its insulation performance and protection capabilities, and reducing the impact of the external environment on its operation. In harsh environments such as high temperature, high humidity, dust, strong winds, and salt spray, the sealing performance of the fully enclosed sealed operating mechanism effectively protects the internal mechanisms from external environmental factors, reducing the likelihood of malfunctions. However, the technology of fully enclosed sealed operating mechanisms still requires further improvement and optimization. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a fully solid sealing operating mechanism.
[0004] The technical solution adopted by this utility model is as follows: a fully solid-sealed operating mechanism, including an isolation mechanism box and a circuit breaker mechanism box arranged at the top and bottom, and an interlocking mechanism connecting the isolation mechanism box and the circuit breaker mechanism box;
[0005] The isolation mechanism box includes a first back plate and a first front cover. The first back plate and the first front cover are connected to form a sealed mounting cavity. An isolation mechanism is installed in the sealed mounting cavity of the isolation mechanism box. The isolation mechanism includes an isolation operating shaft, a grounding operating shaft and a first output shaft that extend out of the first front cover. The first front cover is provided with a first wiring hole for power supply wiring 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 mounting cavity. A circuit breaker mechanism is installed in the sealed mounting cavity of the circuit breaker mechanism box. The circuit breaker mechanism includes a closing operation shaft, a opening operation shaft and a circuit breaker indicator shaft that extend out of the second front cover. The second front cover is provided with a second wiring hole for power supply wiring 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 closed state, an isolation open state, and a grounding state. When the isolation indicator plate is in the isolation closed state, the isolation indicator plate blocks the grounding operation shaft, making the grounding operation shaft unable to be operated. When the isolation indicator plate is in the isolation open state, the grounding operation shaft is exposed, making the grounding operation shaft operable. When the isolation indicator plate is in the grounding state, the isolation indicator plate blocks the isolation operation shaft, making the isolation operation shaft unable to be operated.
[0008] The isolation baffle can only slide vertically, and when it moves to the upper end, it blocks the closed position of the isolation operating shaft and the grounding operating shaft, and when it moves to the lower end, it exposes the open position of 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 the circuit breaker closed state and the circuit breaker open state. When the circuit breaker indicator plate and the isolation baffle are driven by the second interlocking rod that can only slide vertically, the isolation baffle and the open operating shaft are cooperated by a third interlocking rod that can only slide vertically. The upper end of the third interlocking rod is connected to the isolation baffle and the lower end abuts against the open operating shaft.
[0009] The circuit breaker indicator plate is linked to the 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 tripping operation shaft is linked to a tripping push plate, and the lower end of the third interlocking rod abuts against the tripping push plate. When the circuit breaker performs a tripping operation, the circuit breaker indicator plate rotates to the circuit breaker tripping position, the tripping push plate rotates downward, and the second interlocking rod and the isolation baffle move downward under the action of gravity, while 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. Below the grounding cam is a first interlocking rod that can only slide in the vertical direction. Below the first interlocking rod is a fourth interlocking rod that can only slide in the vertical direction. The lower end of the fourth interlocking rod abuts against the door lock rod. When the grounding cam is in the grounding closed state, the fourth interlocking rod can move upward. 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 part located in the middle. The closing limit part cooperates with the closing operation shaft. When the fourth interlocking rod moves upward, it blocks the closing operation shaft so that the closing operation shaft cannot rotate to close the circuit breaker.
[0013] The beneficial effects of this utility model are as follows: This utility model provides a fully solid-sealed operating mechanism that can be used in high-voltage switchgear in harsh environments, reducing the probability of damage, and the overall structure is compact, meeting the specifications of existing switchgear. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.
[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;
[0016] Figure 2 This is a schematic diagram of the isolation mechanism box in one embodiment of the present invention;
[0017] Figure 3 This is a schematic diagram of the circuit breaker mechanism box in one embodiment of the present invention;
[0018] Figure 4 This is a schematic diagram of the interlocking mechanism in one embodiment of the present invention;
[0019] Figure 5 This is a schematic diagram of the interlocking structure of the circuit breaker indicator plate and the closing operation shaft in one embodiment of the present invention;
[0020] Figure 6 This is a schematic diagram of the structure of the fourth interlocking component in one embodiment of the present invention;
[0021] Figure 7 This is a schematic diagram of the interlocking structure of the grounding operation shaft in one embodiment of the present invention;
[0022] Figure 8 This is a schematic diagram of the interlocking structure of the closing operation shaft in one embodiment of the present invention. Detailed Implementation
[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0024] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.
[0025] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.
[0026] A fully solid-sealed sealing operating mechanism, such as Figure 1 As shown, it includes an isolation mechanism box 100 and a circuit breaker mechanism box 200 arranged vertically, as well as an interlocking mechanism 300 connecting the isolation 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 mounting cavity. An isolation mechanism is installed inside the sealed mounting 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 extend through the first front cover 120. The first front cover 120 is provided with a first wiring hole 121 for power supply wiring harness. The electrical control lines in the isolation mechanism inside the sealed mounting cavity of the isolation mechanism box 100 are all connected to the outside through the first wiring hole 121. Specifically, a high-waterproof wiring device, such as an aviation connector, can be used. The isolation operating shaft 410, the grounding operating shaft 420, and the first output shaft 430 are all sealed to the first front cover 120, and the sealing element is hidden in the figure.
[0028] like Figure 3 As shown, the circuit breaker mechanism housing 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 mounting cavity. A circuit breaker mechanism is installed inside the sealed mounting cavity of the circuit breaker mechanism housing 200. The circuit breaker mechanism includes a closing operating shaft 510, a opening operating shaft 520, and a circuit breaker indicating shaft 530 that extend through the second front cover 220. The second front cover 220 is provided with a second wiring hole 221 for power supply wiring harness. The electrical control lines in the circuit breaker mechanism inside the sealed mounting cavity of the circuit breaker mechanism housing 200 are all connected to the outside through the second wiring hole 221. Specifically, a high-waterproof wiring device, such as an aviation connector, can be used. The closing operating shaft 510, the opening operating shaft 520, and the circuit breaker indicating shaft 530 are all sealed to the second front cover 220; the seals are 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 closed state, an isolation open state, and a grounding state. When the isolation indicator plate 310 is in the isolation closed state, the isolation indicator plate 310 blocks the grounding operation shaft 420 so that the grounding operation shaft 420 cannot be operated. When the isolation indicator plate 310 is in the isolation open state, the grounding operation shaft 420 is exposed so that the grounding operation shaft 420 can be operated. When the isolation indicator plate 310 is in the grounding state, the isolation indicator plate 310 blocks the isolation operation shaft 410 so that the isolation operation shaft 410 cannot be operated, thus ensuring that grounding cannot be operated when isolation is closed and isolation cannot be operated when grounding is closed.
[0031] The isolation baffle 320 can only slide vertically, and when it moves to the upper end, it blocks the closed position of the isolation operating shaft 410 and the grounding operating shaft 420, and when it moves to the lower end, it exposes the open position of 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, showing the circuit breaker closed state and the circuit breaker open state. When the circuit breaker indicator plate 350 and the isolation baffle 320 are driven by the second interlocking rod 360, which can only slide vertically, the isolation baffle 320 and the open operating shaft 520 are connected by a third interlocking rod 370, which can only slide vertically. The upper end of the third interlocking rod 370 is connected to the isolation baffle 320 and the lower end abuts against the open operating shaft 520. Figure 4As shown, the circuit breaker indicator plate 350 is linked 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. The tripping operation shaft 520 is linked to the tripping push plate 521. The lower end of the third interlocking rod 370 abuts against the tripping push plate 521. When the circuit breaker performs a tripping operation, the circuit breaker indicator plate 350 rotates to the circuit breaker tripping position, the circuit breaker cam 351 rotates downward, and the tripping 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 a closing operation, the circuit breaker indicator plate 350 rotates upward, pushing the second interlocking rod 360, which in turn pushes the isolation baffle 320 upward to the closing position. At this time, neither the isolation operating shaft 410 nor the grounding operating shaft 420 can be operated.
[0032] 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. Below the grounding cam 330 is a first interlocking rod 340 that can only slide vertically. Below the first interlocking rod 340 is a fourth interlocking rod 380 that can only slide vertically. The lower end of the fourth interlocking rod 380 abuts against a door lock rod 390. Figure 6 As shown, the fourth interlocking rod 380 has a grounding contact part 381 at the upper end, a closing limit part 382 in the middle, a door lock contact part 383 at the bottom, an interlocking support arm 384 in the middle, and a closing contact part 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 contact part 381. When the grounding cam 330 is in the grounding closed state, the fourth interlocking rod 380 can move upward. When the grounding cam 330 is in the grounding open state, the fourth interlocking rod 380 cannot move upward to open the door. Figure 8 As shown, the closing limit part 382 cooperates with the closing operation shaft 510. When the fourth interlocking rod 380 moves upward, it blocks the closing operation shaft 510, preventing the closing operation shaft 510 from rotating to close the circuit breaker. When the isolation mechanism is in the grounding state, the cable compartment door can be opened. After the cable compartment door is opened, that is, when the fourth interlocking rod 380 moves to the upper position, the circuit breaker mechanism cannot be operated and the grounding cannot be tripped.
[0033] In this embodiment, an interlocking mechanism 300 is provided outside the isolation mechanism box 100 and the circuit breaker mechanism box 200. The interlocking mechanism 300 has a simple, compact and reliable structure, making the whole unit more miniaturized.
[0034] Specifically, the sliding and 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 achieved through a mating structure consisting of at least two limiting pins set on the first front cover 120 or the second front cover 220 and at least two longitudinally arranged strip holes on the interlocking component.
[0035] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A fully encapsulated seal operating mechanism characterized by: The isolating mechanism box (100) and the circuit breaker mechanism box (200) are arranged vertically, and the interlocking mechanism (300) is connected between the isolating mechanism box (100) and the circuit breaker mechanism box (200); The isolating 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 mounting cavity, and an isolating mechanism is mounted in the sealed mounting cavity of the isolating mechanism box (100); the isolating mechanism comprises an isolating operation shaft (410), a grounding operation shaft (420) and a first output shaft (430) which pass through the first front cover (120); and the first front cover (120) is provided with a first wiring hole (121) for wiring of 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 mounting cavity, and a circuit breaker mechanism is mounted in the sealed mounting 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) which pass through the second front cover (220); and the second front cover (220) is provided with a second wiring hole (221) for wiring of an electric wire harness.
2. A fully encapsulated sealing operating mechanism according to claim 1, characterized in that: The interlocking mechanism (300) comprises an isolating indicating plate (310), the isolating indicating plate (310) is sleeved on the first output shaft (430) and rotates with the first output shaft (430) to have an isolating closing state, an isolating opening state and a grounding state; when the isolating indicating plate (310) is in the isolating closing state, the isolating indicating plate (310) blocks the grounding operation shaft (420) so that the grounding operation shaft (420) cannot be operated; when the isolating indicating plate (310) is in the isolating opening state, the grounding operation shaft (420) is exposed so that the grounding operation shaft (420) can be operated; and when the isolating indicating plate (310) is in the grounding state, the isolating indicating plate (310) blocks the isolating operation shaft (410) so that the isolating operation shaft (410) cannot be operated.
3. A fully encapsulated seal operating mechanism according to claim 2, wherein: The interlocking mechanism (300) comprises an isolating baffle (320), the isolating baffle (320) can only slide in the vertical direction and has a closing position at which the isolating baffle (320) moves to the upper end and blocks the isolating operation shaft (410) and the grounding operation shaft (420), and an opening position at which the isolating baffle (320) moves to the lower end and exposes the isolating operation shaft (410) and the grounding operation shaft (420); the circuit breaker indicating plate (350) is fixed on the circuit breaker indicating rotating shaft (530) and rotates with the circuit breaker indicating rotating shaft (530) to have a circuit breaker closing state and a circuit breaker opening state; when the circuit breaker indicating plate (350) is driven by the second interlocking rod (360) which can only slide in the vertical direction, the isolating baffle (320) and the opening operation shaft (520) are matched with the third interlocking rod (370) which can only slide in the vertical direction; the upper end of the third interlocking rod (370) is connected with the isolating baffle (320) and the lower end abuts against the opening operation shaft (520).
4. A fully encapsulated seal operating mechanism according to claim 3, wherein: The circuit breaker indication board (350) is connected with a circuit breaker cam (351) in linkage, the second interlocking rod (360) is abutted on the circuit breaker cam (351) at the lower end and is fixedly connected with the isolation baffle (320) at the upper end, when the circuit breaker indication board (350) is in the closing state, the circuit breaker cam (351) is rotated upward to the closing position of the isolation baffle (320).
5. The positive seal operating mechanism of claim 3, wherein: The opening operation shaft (520) is connected with an opening push plate (521) in linkage, the third interlocking rod (370) is abutted on the opening push plate (521) at the lower end, when the circuit breaker is in the opening operation, the circuit breaker indication board (350) is rotated to the opening position of the circuit breaker, the opening push plate (521) is rotated downward, the second interlocking rod (360) and the isolation baffle (320) are moved downward under the action of gravity, and the isolation operation shaft (410) and the grounding operation shaft (420) are exposed.
6. The totally enclosed seal operating mechanism of claim 2, wherein: The grounding cam (330) is fixed on the grounding operation shaft (420) and is rotated with the grounding operation shaft (420) to have a grounding closing state and a grounding opening state, the grounding cam (330) is provided with a first interlocking rod (340) which can only slide in the vertical direction below, the first interlocking rod (340) is provided with a fourth interlocking rod (380) which can only slide in the vertical direction below, the fourth interlocking rod (380) is abutted on the door lock rod (390) at the lower end, when the grounding cam (330) is in the grounding closing state, the fourth interlocking rod (380) can be moved upward, when the grounding cam (330) is in the grounding opening state, the fourth interlocking rod (380) cannot be moved upward.
7. A fully encapsulated seal operating mechanism according to claim 6, wherein: The fourth interlocking rod (380) has a closing limiting portion (382) at the middle portion, the closing limiting portion (382) is matched with the closing operation shaft (510), when the fourth interlocking rod (380) is moved upward, the closing limiting portion (382) blocks the closing operation shaft (510) so that the closing operation shaft (510) cannot be rotated to close the circuit breaker.