A heightened semi-solid seal type lower isolation sealing structure

Abstract

This utility model relates to the field of power equipment disconnect switch technology, and in particular to a heightened semi-solidified lower isolation sealing structure, including a housing. One side of the housing has a semi-solidified lower isolation structure, and the other side is a heightened housing, connected by an interlocking rod. The heightened housing contains an upper plate, a middle plate, and a bottom plate, all connected and supported by support columns. A motor is mounted on one side of the middle plate, and the motor's output end is connected to a vertically arranged gear shaft. The gear shaft passes through the middle plate, upper plate, and cover plate in sequence, and a shaft seal is installed at the plate penetration point for sealing. A gear disc meshes with an anti-reverse block at the bottom of the gear shaft. The anti-reverse block is connected to the anti-reverse shaft via a stop spring, achieving unidirectional limit and anti-reverse rotation. A splitting and closing shaft is provided on the middle plate, which drives the two side plates of the lower isolation switch to operate via a connecting rod, realizing the opening and closing operation of the lower isolation switch. This structure effectively prevents misoperation and improves the safety and stability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of power equipment disconnection switch technology, and in particular to a heightened semi-solid-sealed lower isolation sealing structure. Background Technology

[0002] In medium- and high-voltage power systems, disconnecting switches are indispensable components in the maintenance and operation of electrical equipment. They are typically used to physically disconnect high-voltage electrical equipment from the energized system to ensure maintenance safety. Traditional disconnecting switches mostly adopt exposed or conventional enclosed structures. Although they are simple in structure and easy to operate, they are prone to insulation degradation, operational failure, and safety hazards in high-altitude, high-humidity, or dusty environments.

[0003] To improve the operational stability and environmental adaptability of isolation devices, some devices have begun to adopt a "lower isolation + enclosed cavity" design concept, placing the isolation mechanism at the bottom of the housing and providing a certain degree of enclosed protection through the housing. However, existing lower isolation enclosed structures typically still have significant shortcomings in terms of sealing performance, space utilization, and linkage reliability. The limited height of existing structures prevents the integration of more complex drive mechanisms and interlocking functions, thus restricting the expansion of automation and remote control capabilities. Utility Model Content

[0004] The purpose of this invention is to provide a heightened semi-solidified lower isolation sealing structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a heightened semi-solidified lower isolation sealing structure, including a shell, wherein the shell includes a semi-solidified lower isolation structure on one side and a heightened shell on the opposite side, and the two are mechanically linked by an interlocking rod.

[0006] According to the above technical solution, the interior of the heightened shell is provided with a bottom plate, a middle plate and an upper plate in sequence. The bottom plate, the middle plate and the upper plate are connected and supported by support columns to form a layered support structure.

[0007] According to the above technical solution, a motor is installed on one side of the middle plate. The top of the motor passes through the upper plate and is fixed, and its bottom is installed in contact with the middle plate. The output end of the motor is vertically set and connected to the gear shaft.

[0008] According to the above technical solution, the gear shaft passes through the middle plate, the upper plate and the cover plate in sequence, and a shaft seal is provided at the position where it passes through each layer plate for sealing. The top of the gear shaft extends to the outside of the cover plate for external drive or feedback device.

[0009] According to the above technical solution, the bottom of the gear shaft is provided with a gear disk, which meshes with the anti-reverse block installed on the middle plate. The anti-reverse block is provided with a stop pressure finger spring, which is used to provide unidirectional limiting elastic force.

[0010] According to the above technical solution, the anti-reverse block is connected to the anti-reverse shaft, and the upper and lower ends of the anti-reverse shaft are respectively fixed between the upper plate and the middle plate, which plays a locking role in preventing the gear shaft from reversing.

[0011] According to the above technical solution, the middle plate is provided with a splitting shaft, and its bottom is connected to the two side plates of the circuit breaker through a splitting shaft connecting rod, so as to realize the control of the opening and closing action of the lower isolation device.

[0012] According to the above technical solution, the upper plate is provided with a button mounting post and a button, and the button, button roller and limit plate cooperate to form a manual operation and limit mechanism.

[0013] According to the above technical solution, the middle plate is also provided with a tripping limit bushing, a tripping limit shaft, a closing limit shaft and an energy storage spring mounting shaft, which are used to constrain the tripping and closing action range and cooperate with the energy storage spring mechanism to control the switch state.

[0014] According to the above technical solution, the base plate is provided with a tension spring and an energy storage spring connecting plate, which, together with the above-mentioned limiting shaft and drive transmission mechanism, realizes the pre-storage and buffered release of energy, thereby improving the efficiency and safety of action response.

[0015] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This utility model, through the reasonable combination of a raised shell and a semi-solidified lower isolation sealing structure, achieves effective space utilization and optimized structural layout; the use of upper, middle, and bottom three-layer plates for separation, coupled with support columns, improves the overall structural stability and sealing performance; the setting of a motor-driven gear shaft, combined with anti-reverse blocks and spring limit mechanisms, effectively prevents reverse rotation and misoperation, ensuring the reliability and safety of opening and closing actions; the interlocking design of buttons, rollers, and limit plates realizes precise control and mechanical linkage in the operation process, improving the convenience and safety of use; the combination of energy storage springs and tension springs makes the action response faster and smoother, extending the service life of the equipment; the reasonable overall structural design and tight sealing significantly improve the durability of the device and its ability to adapt to complex working conditions, meeting the high standard requirements for the lower isolation sealing structure in practical applications. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the internal structure of a heightened semi-solidified lower isolation sealing structure proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a heightened semi-solidified lower isolation sealing structure proposed in this utility model from another angle;

[0019] Figure 3 This is a schematic diagram of the overall structure of a heightened semi-solidified lower isolation sealing structure proposed in this utility model;

[0020] Figure 4 This is a top view of a heightened semi-solidified lower isolation sealing structure proposed in this utility model.

[0021] In the picture:

[0022] 1. Cover plate;

[0023] 2. Upper plate, 21. Button mounting post, 22. Opening half shaft, 23. Closing half shaft, 24. Button, 25. Limit plate, 26. Button roller, 27. Interlocking rod, 28. Counter;

[0024] 3. Middle plate, 31. Opening limit bushing, 32. Opening limit shaft, 33. Energy storage spring mounting shaft, 34. Motor, 35. Anti-reverse block, 351. Stop pressure finger spring, 352. Anti-reverse shaft, 36. Gear shaft, 361. Gear disc, 37. Closing limit shaft, 38. Opening and closing shaft, 39. Opening and closing shaft connecting rod, 310. Opening two square plates;

[0025] 4. Base plate; 41. Tension spring; 42. Energy storage spring connecting plate; 43. Support column;

[0026] 5 operating axes. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example:

[0029] Reference Figure 1-4 A heightened semi-solidified lower isolation sealing structure includes a housing, which is composed of a semi-solidified lower isolation sealing structure on one side and a heightened housing on the opposite side. The two parts are functionally linked by an interlocking rod 27. This structure is suitable for medium and high voltage electrical installations to realize the functions of sealing, driving, interlocking and counting control of circuit breaker mechanisms or isolation devices.

[0030] The raised housing contains, from bottom to top, a base plate 4, a middle plate 3, and an upper plate 2, with a cover plate 1 at the top. The plates are fixedly connected by multiple support columns 43, forming a stable spatial structure and providing a mechanical foundation for installing various functional components. A motor 34 for driving is located on the left side of the middle plate 3, fixedly installed between the middle plate 3 and the upper plate 2. The output shaft of the motor 34 extends downwards and connects to the bottom of a gear shaft 36 installed on the lower side of the middle plate 3. The gear shaft 36 passes through the upper plate 2 and the cover plate 1, and is sealed by a shaft seal sleeve to ensure airtightness during equipment operation and prevent the intrusion of external dust or moisture.

[0031] The upper end of the gear shaft 36 protrudes outside the cover plate 1 for external operation or inspection. Its lower end is connected to a gear disc 361, which meshes with the anti-reverse block 35. The anti-reverse block 35 is equipped with a stop spring 351 to prevent the gear shaft 36 from rotating due to inertia, achieving one-way stopping. The anti-reverse block is fixed to the anti-reverse shaft 352, which is vertically installed between the middle plate 3 and the upper plate 2. Its upper end is fixed to the upper plate 2 with bolts to ensure structural stability and reliability. At the center of the middle plate 3, a through-type opening / closing shaft 38 is provided to transmit the opening and closing actions. The bottom of this shaft connects to the two opening plates 310, realizing the conversion of mechanical actions. The opening and closing shafts are also connected to the closing limit shaft 37 and the opening limit shaft 32 via the opening and closing shaft connecting rod 39. These limit shafts are mounted on the middle plate 3 via corresponding limit bushings 31 to control their stroke and limit position. A closing half-shaft 23 is also provided near the opening and closing shaft 38. Its top passes through the through hole between the upper plate 2 and the cover plate 1, and finally contacts the limit plate 25 above the cover plate 1, and is fixed to the button roller 26 by bolts. The limit plate 25 is fixedly connected to the interlocking rod 27, which is finally connected to the operating shaft 5 in the semi-solidified lower isolation sealing structure on one side of the housing. The opening half-shaft 22 has the same structure as the closing half-shaft 23, but does not contact the limit plate 25.

[0032] The surface of the upper plate 2 is provided with multiple structures for human-machine operation and display: such as a button 24 installed on the button mounting post 21, which can trigger the internal mechanism to act in conjunction with the button roller 26; in addition, a limit piece 25 is provided to limit the range of motion of the button 24 and prevent accidental operation.

[0033] The structure incorporates an energy storage and release system: a tension spring 41 and an energy storage spring connecting plate 42 are mounted on the base plate 4. One end of the tension spring 41 is fixed to the base plate 4, and the other end is connected to the energy storage spring connecting plate 42. The middle plate 4 has an energy storage spring mounting shaft 33 for mounting energy compensation elements during reset or triggering. The interlocking rod 27 is mechanically connected to the operating shaft 5 in the semi-solidified lower isolation sealing structure on one side of the housing, ensuring operational synchronization and safety interlocking between the raised housing and the semi-solidified structure. Additionally, a counter 29 is provided to record the number of closing / opening cycles, ensuring traceability and maintenance of the device's operating status.

[0034] When the equipment is in standby mode, the motor 34 starts running after receiving the operation control signal, and its output shaft drives the vertically mounted gear shaft 36 to rotate. The gear disk 361 at the bottom of the gear shaft 36 meshes with the anti-reverse block 35. The anti-reverse block 35 provides a one-way limiting force through the stop pressure spring 351 installed on it, ensuring that the gear shaft will not reverse due to inertia or springback after the motor stops, thus ensuring the accurate maintenance of the isolation position. The anti-reverse block 35 is fixed on the anti-reverse shaft 352. The upper and lower ends of the anti-reverse shaft are respectively fixed between the middle plate 3 and the upper plate 2, forming a stable stop support mechanism. The rotational power of the gear shaft 36 can be manually operated in an emergency through its exposed upper structure. The rotation of the middle section of the gear shaft simultaneously drives the splitting shaft 38 in the middle of the middle plate 3. The lower end of the splitting shaft 38 is connected to the two side plates 310 of the switch via the splitting shaft connecting rod 39, further driving the lower isolating switch to "close" or "open" operation. To ensure the reliability of the operation, a limit bushing 31 and a limit shaft 32 are provided in the opening direction, and a limit shaft 37 is provided in the closing direction, which are used to limit the range of movement of the opening and closing shafts and prevent the mechanism from over-positioning or misoperation.

[0035] Button 24 is located on the upper plate 2. Users can control the equipment to start by pressing the button. At the same time, the button cooperates with the button mounting post 21, the button roller 26 and the limit plate 25 to ensure mechanical feedback and position calibration of the button action and prevent accidental activation. One end of the interlocking rod 27 is connected to the isolating switch linkage device, and the other end is fixed to the side structure of the raised housing to realize mechanical interlocking. When the lower isolating switch is not completely disconnected or the mechanism is not in position, the interlocking mechanism restricts the operation of the operating mechanism, thereby realizing the forced locking function and preventing closing or disconnecting under load.

[0036] During each separation or merging operation, counter 29 synchronously receives action feedback and counts the number of operations or service life by rotating synchronously with the separation / merging shaft or gear shaft, which is used to record the number of operations or service life for easy maintenance and system monitoring.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-profile semi-pot type lower isolation seal structure, characterized by, Includes a housing, which includes a semi-solidified lower isolation structure on one side and a raised housing on the opposite side, and the two are mechanically linked by an interlocking rod (27); The raised shell is provided with a bottom plate (4), a middle plate (3) and an upper plate (2) in sequence, and the plates are connected and fixed by support columns (43); A motor (34) is installed on one side of the middle plate (3). The output shaft of the motor (34) is connected to a vertically arranged gear shaft (36). The gear shaft (36) passes through the middle plate (3), the upper plate (2) and the cover plate (1) in sequence, and a shaft seal sleeve is provided at the plate passage for sealing. The gear shaft (36) is provided with a gear disk (361) at its lower end. The gear disk (361) meshes with the anti-reverse block (35). The anti-reverse block (35) is connected to the anti-reverse shaft (352) through a stop pressure finger spring (351). The upper and lower ends of the anti-reverse shaft (352) are respectively fixed between the upper plate (2) and the middle plate (3). The middle plate (3) is also provided with a split-open shaft (38), the lower end of which drives the two side plates (310) of the circuit breaker through the split-open shaft connecting rod (39) to realize the closing or opening operation of the lower isolation.

2. The high-profile semi-pot type lower isolation seal structure according to claim 1, characterized in that: The cover plate (1) is fixed to the upper plate (2) by screws and has a through hole for the gear shaft (36) to pass through. A shaft seal sleeve is provided at the through hole for sealing.

3. The high-profile semi-pot type lower isolation seal structure according to claim 1, characterized in that: The travel of the opening and closing shaft (38) is limited by the opening limit bushing (31), the opening limit shaft (32), and the closing limit shaft (37).

4. The high-profile semi-pot type lower isolation seal structure according to claim 1, characterized in that: The upper plate (2) is provided with a button mounting post (21) for mounting buttons (24).

5. The high-profile semi-pot type lower isolation seal structure according to claim 4, characterized in that: The button (24) achieves the functions of rebound and limiting through the button roller (26) and the limiting piece (25).

6. The high-profile semi-pot type lower isolation seal structure according to claim 1, characterized in that: The top of the gear shaft (36) extends above the cover plate (1).

7. The high-profile semi-pot type lower isolation seal structure according to claim 1, characterized in that: The anti-reverse block (35) is loaded by a spring (351) to restrict the reverse rotation of the gear shaft (36) after it has rotated, thus ensuring that the mechanism stops stably.

8. The high-profile semi-pot type lower isolation seal structure according to claim 1, characterized in that: The base plate (4) and the middle plate (3) are connected by a tension spring (41) and an energy storage spring connecting plate (42) to achieve elastic loading, which is used to provide assistance and buffering function for the mechanism during the opening and closing process.

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