A rotary disconnecting PT spacer blade

Abstract

The application relates to a rotary disconnecting PT isolator, which comprises a PT isolator mechanism, the PT isolator mechanism comprising a box body, one side of the box body being provided with a gate opening and closing mechanism, the other side of the box body being provided with a stable power supply mechanism, and the other side of the box body being provided with a power supply structure. Through the meshing transmission structure of a rotating shaft, a bevel gear one and a bevel gear two, and the linkage structure of multiple groups of rocker arms one and rocker arms two, the gate is stably rotated and swung, mechanical impact in the opening and closing process is reduced, and the stability and transmission smoothness of the isolator opening and closing operation are improved.

Description

Technical Field

[0001] This invention belongs to the field of PT spacers, specifically a rotary-type PT spacer. Background Technology

[0002] Voltage transformer disconnect switches are widely used in high-voltage power distribution systems. Existing PT disconnect switches employ a rotary swing-type opening and closing structure, which has the advantages of simple structure, convenient operation, small installation space, and clear transmission logic. Relying on mechanical linkages to complete the opening and closing actions, it can meet the switching and isolation requirements of conventional high-voltage circuits. Furthermore, conventional disconnect switches have good mechanical stability, low manufacturing cost, and are suitable for most outdoor and indoor high-voltage power distribution scenarios. However, significant shortcomings still exist in actual use: the conductive contact surfaces of existing disconnect switches are exposed to air for extended periods, easily accumulating dust and residual impurities from arc burning. Long-term use increases contact resistance and reduces conductivity stability. When the equipment is overloaded or experiences short-circuit heating, the clamping force at the conductive connection cannot be adaptively adjusted, and under high-temperature conditions, arcing and heating can easily occur, leading to increased resistance and exacerbating contact erosion. Therefore, a rotary-type PT disconnect switch is proposed. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: the existing conductive contact surface of the blade is exposed to the air for a long time, which easily accumulates dust and residual impurities from electric arc burning. With long-term use, the contact resistance increases and the conductivity stability decreases. When the equipment is overloaded or short-circuited and heats up, the clamping force at the conductive connection cannot be adjusted adaptively. Under high-temperature conditions, arcing and heating can easily occur, leading to increased resistance and exacerbating contact erosion.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rotary-splitting PT spacer, comprising: The PT disconnector mechanism includes a housing, a switch-off mechanism on one side of the housing, a stable power supply mechanism on another side of the housing, and a power supply structure on the other side of the housing.

[0006] A stable power supply mechanism is connected to the transmission line.

[0007] As a preferred technical solution for rotary switching of PT disconnectors, the disconnector mechanism includes a stationary terminal, a moving terminal, and a control mechanism. The stationary terminal is located on the lower side of the housing, and the moving terminal is rotatably connected to the bottom of the stable power supply mechanism. The moving terminal includes a switch, which is connected to the control mechanism and movably connected to the stationary terminal. Through the movable connection of the stationary and moving terminals with the switch, smooth rotary opening and closing is achieved, improving the ease of switching on and off.

[0008] As a preferred technical solution for a rotary switching PT switch, the control mechanism includes a rotary adjustment mechanism. This mechanism comprises a rotating shaft, rocker arms, a linkage shaft, rocker arm one, rocker arm two, bevel gear one, and bevel gear two. The rotating shaft is rotatably connected to one side of the housing, and a rocker arm is fixedly connected to one end of the rotating shaft. A linkage shaft is rotatably connected to the housing, and three rocker arms one are spaced apart on the linkage shaft. Rocker arms two are rotatably connected to rocker arms one, and rocker arms two are rotatably connected to the middle of the switch. Bevel gear one is mounted on the linkage shaft, and bevel gear two is mounted at the other end of the rotating shaft, meshing with bevel gear one. Through the meshing and coordination of bevel gear one and bevel gear two with multiple rocker arms, torque is smoothly transmitted, ensuring smooth and jam-free rotation of the switch.

[0009] As a preferred technical solution for a rotary switching PT disconnector, the stationary terminal component includes an insulator base, a cantilever beam, and a stationary terminal block. The insulator base is mounted on the housing, and a horizontally positioned cantilever beam is mounted on the insulator base. The stationary terminal block is located at the end of the cantilever beam furthest from the insulator base. The stationary terminal block is U-shaped, and one end of the switch is movably inserted into the stationary terminal block, allowing the switch to clamp the stationary terminal block. The U-shaped stationary terminal block, combined with the insertion and clamping structure, increases the contact area and improves the stability of conductive contact.

[0010] As a preferred technical solution for a rotary switching PT disconnector, the stable power supply mechanism includes a connecting seat, a clamping movable plate, and a compression spring. The connecting seat is mounted on the housing, and the clamping movable plate is movably inserted into the connecting seat. A compression spring is installed between the clamping movable plate and the connecting seat, and a switch is rotatably connected to the clamping movable plate. The continuous elastic pressure of the compression spring achieves automatic pre-tightening after closing, preventing loosening of the connection.

[0011] As a preferred technical solution for a rotary switching PT deflector, the stable power supply mechanism also includes a circular power supply plate. A circular power supply plate is mounted on the clamping movable plate, and a connecting rod is mounted on the circular power supply plate. A deflector and a thermal expansion sleeve are sleeved on the connecting rod, and a nut is threaded onto the connecting rod. The nut compresses the thermal expansion sleeve. When the thermal expansion sleeve expands due to heat, its inner ring widens, its thickness increases, and it more tightly compresses the deflector. Through the thermal deformation of the thermal expansion sleeve, automatic high-temperature clamping is achieved, reducing high-temperature contact resistance and preventing arcing and overheating.

[0012] As a preferred technical solution for a rotary switching PT (potentially variable transmission) gate, the PT gate mechanism also includes a square power supply board. The square power supply board is mounted on the gate and is movably connected to the stationary terminal block. This connection of the square power supply board improves the positioning accuracy and enhances the reliability of the conductive connection.

[0013] As a preferred technical solution for rotary switching PT (Potential Transmission Device) disconnectors, the PT disconnector mechanism also includes arc-shaped power supply boards. Two arc-shaped power supply boards are mounted on the switch, with a gap between them to prevent simultaneous damage due to short circuits or overheating. They serve as backups for each other and are made of different materials: graphite and copper. This dual-material arc-shaped power supply board (copper and graphite) provides redundant protection and improves the equipment's operational fault tolerance.

[0014] As a preferred technical solution for a rotary switching PT deflector, the stable power supply mechanism also includes mating components, which include a micro-motion elastic element, a movable cylinder, a clamping seat, and a connecting column. The movable cylinder is sleeved on the outer side of the connecting column, and a micro-motion groove one is formed on the connecting column. A micro-motion groove two is formed on the inner side of the movable cylinder, corresponding to micro-motion groove one. One end of the micro-motion elastic element extends into micro-motion groove two, and the other end extends into micro-motion groove one. Through the nested mating of micro-motion groove one and micro-motion groove two with the micro-motion elastic element, vibration buffering is achieved, suppressing structural loosening.

[0015] As a preferred technical solution for a rotary-type PT cutter, the micro-motion elastic element includes two limiting blocks and a U-shaped spring. The two limiting blocks are connected by the U-shaped spring, which presses against the limiting blocks to keep them tightly against the inner wall of the micro-motion groove. The elastic compression of the limiting blocks by the U-shaped spring achieves continuous pre-tightening and anti-loosening, improving the equipment's vibration resistance.

[0016] The beneficial effects of the rotary PT disconnector of the present invention are as follows: through the meshing transmission structure of the rotating shaft, bevel gear one and bevel gear two, and the linkage structure composed of multiple rocker arms one and two, the disconnector can rotate and swing smoothly, reduce the mechanical impact during the opening and closing process, and improve the stability and transmission smoothness of the disconnector opening and closing operation.

[0017] By attaching a thermal expansion sleeve to the outside of the circular power supply board, the thermal expansion sleeve's thermal deformation characteristics are utilized to automatically clamp the switch under high-temperature conditions, reducing conductive contact resistance, avoiding high-temperature arcing and loose contact problems, and adapting to abnormally high-temperature power supply conditions.

[0018] By setting two sets of arc-shaped power supply boards of different materials on the switch, and using the gap between the two boards to arrange a redundant structure, dual conductive backup protection is achieved, avoiding direct power outage caused by damage to a single conductive structure, and improving the fault tolerance rate and power supply safety of the equipment.

[0019] The system uses a combination of elastic extrusion plates and friction plates to form a normal scraping structure. Combined with the high-temperature deformation characteristics of bimetallic strips, it achieves automatic cleaning of conductive contact surfaces at room temperature and automatic avoidance and detachment of the scraping structure at high temperatures. This ensures clean contact surfaces while avoiding problems such as board jamming and excessive polishing caused by high-temperature hard extrusion.

[0020] By combining the connecting column, movable cylinder, U-shaped spring, and limiting block to form a micro-motion elastic anti-loosening structure, elastic buffering and shock absorption are achieved during equipment vibration, offsetting vibration displacement, suppressing loosening of the connection structure, and ensuring long-term power supply stability.

[0021] By combining the compression spring with the inner spring washer of the nut, a double anti-loosening limit is achieved at the mechanical connection position, which helps to improve the stability of the closing clamping and further reduces the probability of structural loosening failure.

[0022] Through the coordinated operation of the above structures, the defects of traditional PT disconnectors, such as easy oxidation of the contact surface, poor contact at high temperatures, loosening due to vibration, low fault tolerance, and high-temperature jamming, are solved in an integrated manner. The structure has strong linkage and excellent automated protection capabilities, making it suitable for long-term stable use in high-voltage power distribution environments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 For the present invention Figure 2 A partially enlarged structural diagram of part A in the middle; Figure 4 This is a schematic diagram of the stable power supply mechanism of the present invention; Figure 5 This is a schematic diagram of the connection structure between the gate and the cleaning component of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the micro-motion elastic element of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the micro-motion elastic element of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the connection structure between the gate and the cleaning component of the present invention. Figure 2 .

[0024] Reference numerals: 100, PT partition mechanism; 101, housing; 102, rotating shaft; 103, rocker arm; 104, linkage shaft; 105, rocker arm one; 106, rocker arm two; 107, switch; 108, arc-shaped power supply plate; 109, bevel gear one; 110, bevel gear two; 111, square power supply plate; 112, insulator base; 113, cantilever beam; 114, stationary terminal base; 200, stable power supply mechanism; 201, connecting seat; 20 2. Clamping movable plate; 203. Compression spring; 204. Circular power supply plate; 205. Clamping component; 206. Movable cylinder; 207. Clamping seat; 208. Connecting column; 209. Micro-motion groove one; 210. Micro-motion groove two; 211. Limiting block; 212. U-shaped spring; 300. Cleaning component; 301. Connecting seat; 302. Friction plate; 303. Graphite block; 304. Bimetallic strip; 305. Elastic compression plate; 400. Thermal expansion sleeve. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0029] like Figures 1-8 As shown, the present invention proposes a rotary-splitting PT spacer, comprising: The PT disconnector mechanism 100 includes a housing 101. A switch-off mechanism is provided on one side of the housing 101, and a stable power supply mechanism 200 is also provided on one side of the housing 101. A power supply structure is provided on the other side of the housing 101. The power supply structure includes a transformer.

[0030] A power supply stabilization mechanism 200 is connected to a transmission line. The transmission line includes a high-voltage power grid.

[0031] The switch-off mechanism includes a stationary terminal, a moving terminal, and a control mechanism. The stationary terminal is located on the lower side of the housing 101. The bottom of the stable power supply mechanism 200 is rotatably connected to the moving terminal, which includes a switch 107. The switch 107 is connected to the control mechanism and is movably connected to the stationary terminal. Through the movable connection of the stationary and moving terminals with the switch 107, a smooth rotary opening and closing mechanism is achieved, improving the ease of switching on and off.

[0032] The control mechanism includes a rotary adjustment mechanism, which includes a rotary shaft 102, a rocker arm 103, a linkage shaft 104, a rocker arm 105, a rocker arm 106, a bevel gear 109, and a bevel gear 110. The rotary shaft 102 is rotatably connected to one side of the housing 101, and a rocker arm 103 is fixedly connected to one end of the rotary shaft 102. The linkage shaft 104 is rotatably connected to the housing 101, and three rocker arms 105 are spaced apart on the linkage shaft 104. A rocker arm 106 is rotatably connected to the rocker arm 105, and the rocker arm 106 is rotatably connected to the middle of the switch 107. A bevel gear 109 is provided on the linkage shaft 104, and a bevel gear 110 is provided at the other end of the rotary shaft 102. The bevel gear 110 meshes with the bevel gear 109. Through the meshing and coordination of bevel gear 109 and bevel gear 110, multiple rocker arms are linked to achieve smooth torque transmission and ensure that the switch 107 rotates smoothly without jamming.

[0033] The stationary terminal component includes an insulator base 112, a cantilever beam 113, and a stationary terminal base 114. The insulator base 112 is mounted on the housing 101, and a horizontally positioned cantilever beam 113 is mounted on the insulator base 112. The stationary terminal base 114 is located at the end of the cantilever beam 113 furthest from the insulator base 112. The stationary terminal base 114 is U-shaped, and one end of a switch 107 is movably inserted into the stationary terminal base 114, allowing the switch 107 to clamp the stationary terminal base 114. The U-shaped stationary terminal base 114, combined with the insertion and clamping structure, increases the contact area and improves the stability of conductive contact.

[0034] The stable power supply mechanism 200 includes a connecting seat 201, a clamping movable plate 202, and a compression spring 203. The connecting seat 201 is mounted on the housing 101, and the clamping movable plate 202 is movably inserted into the connecting seat 201. A compression spring 203 is positioned between the clamping movable plate 202 and the connecting seat 201. A knife switch 107 is rotatably connected to the clamping movable plate 202. The compression spring 203 continuously and elastically presses against the switch, achieving automatic pre-tightening after closing to prevent loosening of the connection.

[0035] The stable power supply mechanism 200 also includes a circular power supply plate 204. The circular power supply plate 204 is mounted on the clamping movable plate 202, and a connecting rod is mounted on the circular power supply plate 204. A switch 107 and a thermal expansion sleeve 400 are sleeved on the connecting rod, and a nut is threaded onto the connecting rod. The nut compresses the thermal expansion sleeve 400. When the thermal expansion sleeve 400 expands due to heat, its inner ring enlarges, its thickness increases, and it more tightly compresses the switch 107. Through the thermal deformation of the thermal expansion sleeve 400, automatic high-temperature clamping is achieved, reducing high-temperature contact resistance and preventing arcing and overheating.

[0036] The PT disconnector mechanism 100 also includes a square power supply board 111. The square power supply board 111 is provided on the switch 107 and is movably inserted into the stationary terminal block 114. The insertion and cooperation of the square power supply board 111 improves the insertion positioning accuracy and enhances the reliability of the conductive connection.

[0037] The PT disconnector mechanism 100 also includes arc-shaped power supply boards 108. Two arc-shaped power supply boards 108 are mounted on the switch 107, with a gap between them to prevent simultaneous damage due to short circuits or overheating. They serve as backups for each other and are made of different materials: graphite and copper. The use of dual-material arc-shaped power supply boards 108 (copper and graphite) provides redundant protection and improves the equipment's operational fault tolerance.

[0038] The stable power supply mechanism 200 also includes mating components, including a micro-motion elastic element, a movable cylinder 206, a clamping seat 207, and a connecting post 208. The movable cylinder 206 is sleeved on the outer side of the connecting post 208. A micro-motion groove 209 is formed on the connecting post 208, and a micro-motion groove 210 is formed on the inner side of the movable cylinder 206. The micro-motion groove 210 corresponds to the micro-motion groove 209. One end of the micro-motion elastic element extends into the micro-motion groove 210, and the other end of the micro-motion elastic element extends into the micro-motion groove 209. Through the nested mating of the micro-motion grooves 209 and 210, vibration buffering is achieved, and structural loosening is suppressed. The clamping seat 207 cooperates with the clamping movable plate 202 and the compression spring 203. After the circuit is closed, the compression pressure of the compression spring 203 extends along the extension direction of the compression gate 107. Through the clamping movable plate 202 and the compression gate 107, the clamping seat 207 compresses the outside of the stationary terminal seat 114, achieving a stable fit. The clamping seat 207 and the movable cylinder 206 can swing within 15 degrees through the connecting column 208, so that the clamping seat 207 can smoothly fit onto the flat surface of the stationary terminal seat 114. During the circuit closure process, the clamping seat 207 can also more smoothly leave the stationary terminal seat 114 through swinging.

[0039] The micro-motion elastic element includes two limiting blocks 211 and a U-shaped spring 212. The two limiting blocks 211 are connected by the U-shaped spring 212. The U-shaped spring 212 presses against the limiting blocks 211, causing the limiting blocks 211 to fit tightly against the inner wall of the micro-motion groove 209. By elastically pressing the limiting blocks 211 with the U-shaped spring 212, continuous pre-tightening and anti-loosening are achieved, improving the equipment's vibration resistance.

[0040] The contact surface replacement component includes a cleaning component 300, which includes a scraping component. The scraping component includes a connecting seat 301, a friction plate 302, a graphite block 303, a bimetallic strip 304, and an elastic compression plate 305. A scraping component is provided on each side of the switch 107 near the arc-shaped power supply board 108. An elastic compression plate 305 is provided on the switch 107, and a connecting seat 301 is provided on the elastic compression plate 305. An inclined surface is provided at the bottom of the connecting seat 301, and a friction plate 302 is provided on the inclined surface of the connecting seat 301. Under normal conditions, the elastic... The friction plate 302 on the elastic compression connecting seat 301 of the extrusion plate 305 is in close contact with the circular power supply plate 204. A graphite block 303 is provided on the side of the connecting seat 301 near the switch 107. A bimetallic strip 304 is provided between the middle of the upper side of the connecting seat 301 and the switch 107. When the temperature is too high, the bimetallic strip 304 tilts upward and pulls the connecting seat 301 to move, so that the friction plate 302 is separated from the circular power supply plate 204, so as to avoid excessive compression of the circular power supply plate 204, which would cause jamming and excessive polishing would create an antagonistic effect with the thermal expansion sleeve 400. A spring washer is also provided between the nut and the thermal expansion sleeve 400.

[0041] The specific implementation method is as follows: It mainly relies on gear meshing transmission and linkage structure to realize the rotational opening and closing of the switch. It also has the functions of energized adaptive clamping, high temperature protection, contact surface self-cleaning, and dual conductive backup. The specific working process is divided into five parts: closing conduction process, opening disconnection process, high temperature adaptive adjustment process, contact surface self-cleaning process, and micro-motion anti-loosening voltage stabilization process, as detailed below: Closing and conducting process: The operator manually rotates the rocker arm 103, causing the rotating shaft 102 to rotate outside the housing 101. The bevel gear 110 at the end of the rotating shaft 102 rotates synchronously and meshes with the bevel gear 109, causing the linkage shaft 104 to rotate. The linkage shaft 104 drives the three sets of rocker arms 105 arranged at intervals on it to swing synchronously. The rocker arms 105 pull the gate 107 to rotate and swing through the hinged rocker arm 106.

[0042] One end of the switch 107 rotates around the clamping movable plate 202, while the other end moves towards the insulator base 112, causing the square power supply plate 111 at the end of the switch 107 to insert into the U-shaped stationary terminal base 114 at the end of the cantilever beam 113, achieving a locking contact and completing circuit conduction. The compression spring 203 between the clamping movable plate 202 and the connecting base 201 continuously applies an elastic clamping force to ensure the stability of the clamping movable plate 202 and prevent loosening or displacement after closing.

[0043] The tripping and disconnection process: Rotating rocker arm 103 in the reverse direction drives the linkage shaft 104 to rotate in the opposite direction via the meshing of bevel gear 110 and bevel gear 109. Rocker arms 105 and 106 then pull the switch 107 to rotate in the opposite direction. The square power supply plate 111 at the end of the switch 107 is pulled out and detached from the stationary terminal block 114, completely separating the switch 107 from the stationary terminal block 114, thus disconnecting the circuit and completing the disconnection operation. The overall design employs a multi-set rocker arm linkage structure, ensuring smooth transmission. The rotary breaking method reduces the impact of opening and closing, improving operational stability.

[0044] High-temperature adaptive clamping adjustment process: When the switch 107 is closed and energized, excessive equipment load or short circuit abnormalities can cause the temperature at the connection point to rise. A thermal expansion sleeve 400 is fitted onto the outside of the connecting rod of the circular power supply board 204, and a spring washer is placed between the nut and the thermal expansion sleeve 400 for anti-loosening and limiting. When the temperature rises, the thermal expansion sleeve 400 undergoes thermal expansion, increasing the inner ring diameter and overall thickness, pressing against the side wall of the switch 107, automatically increasing the clamping force, reducing the contact resistance during energization, and preventing high-temperature arcing and poor contact.

[0045] Meanwhile, two arc-shaped power supply boards 108 made of graphite and copper are installed on the switch 107. The two arc-shaped power supply boards 108 are spaced apart to serve as backups for each other. If one power supply board overheats or is damaged by a short circuit, the other board can temporarily maintain conductivity, preventing the equipment from being directly powered off and paralyzed, thus improving the fault tolerance rate.

[0046] Self-cleaning and high-temperature avoidance process of contact surfaces: The breaker 107 is equipped with a scraping structure consisting of cleaning components 300 on both sides. Under normal conditions, the elastic pressing plate 305 continuously and elastically presses against the connecting seat 301, causing the friction plate 302 on the inclined surface of the connecting seat 301 to be in close contact with the surface of the circular power supply board 204. During the rotation and opening / closing of the breaker 107, the friction plate 302 scrapes and polishes the contact surface of the circular power supply board 204, removing dust and residual impurities from the electric arc, ensuring the cleanliness of the conductive contact surface, reducing contact resistance, and the graphite block 303 assists in lubrication and friction reduction.

[0047] When the equipment temperature is abnormally high, the bimetallic strip 304 between the connector 301 and the switch 107 deforms upward due to heat, pulling the connector 301 off-center and causing the friction plate 302 to detach from the surface of the circular power supply board 204. This prevents the friction plate 302 from being excessively compressed at high temperatures, which could cause the board surface to jam or become over-polished. At the same time, it forms a structural antagonistic fit with the thermal expansion sleeve 400 to prevent damage from excessive stress on a single structure.

[0048] Micro-motion anti-loosening and voltage stabilization process: The stable power supply mechanism 200 has internal fittings. A movable cylinder 206 is sleeved on the outer side of the connecting column 208. The connecting column 208 has a first micro-motion groove 209, and the movable cylinder 206 has a second micro-motion groove 210. A micro-motion elastic element composed of a limiting block 211 and a U-shaped spring 212 is assembled between the grooves. The U-shaped spring 212 continuously presses against the limiting blocks 211 on both sides, causing the limiting blocks 211 to fit tightly against the inner wall of the first micro-motion groove 209. When the equipment vibrates during operation, the elastic deformation offsets the vibration displacement, suppresses structural loosening, ensures the stability of the power supply connection, and avoids long-term vibration leading to increased connection gaps and unstable conductivity.

[0049] Overall work summary: This PT switchgear achieves smooth opening and closing through a rotating gear and linkage structure, high-temperature adaptive clamping through a thermal expansion sleeve 400, redundancy backup through a dual-material arc-shaped power supply board 108, and automatic cleaning of the contact surface through a cleaning component 300. It also incorporates a micro-motion elastic component for anti-loosening and vibration reduction. The overall structure exhibits strong interlocking, solving the problems of poor high-temperature contact, easy oxidation of the contact surface, vibration loosening, and easy damage to a single conductive structure inherent in traditional PT switchgear. It is suitable for long-term stable use in high-voltage transmission environments.

[0050] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rotary-type PT separator, characterized in that: include: The PT disconnector mechanism includes a housing, a switch-off mechanism on one side of the housing, a stable power supply mechanism on another side of the housing, and a power supply structure on the other side of the housing. A stable power supply mechanism is connected to the transmission line.

2. The rotary-type PT separator according to claim 1, characterized in that: The switch breaking mechanism includes a stationary terminal, a moving terminal, and a control mechanism. The stationary terminal is located on the lower side of the housing. The bottom of the stable power supply mechanism is rotatably connected to the moving terminal. The moving terminal includes a switch, which is connected to the control mechanism and is movably connected to the stationary terminal.

3. The rotary-type PT separator according to claim 2, characterized in that: The control mechanism includes a rotary adjustment mechanism, which includes a rotary shaft, rocker arms, a linkage shaft, rocker arm one, rocker arm two, bevel gear one, and bevel gear two. A rotary shaft is rotatably connected to one side of the housing, and a rocker arm is fixedly connected to one end of the rotary shaft. A linkage shaft is rotatably connected to the housing, and three rocker arms one are spaced apart on the linkage shaft. Rocker arms two are rotatably connected to rocker arms one, and rocker arms two are rotatably connected to the middle of the switch. Bevel gear one is provided on the linkage shaft, and bevel gear two is provided at the other end of the rotary shaft. Bevel gear two meshes with bevel gear one.

4. The rotary-type PT separator according to claim 2, characterized in that: The stationary terminal component includes an insulator base, a cantilever beam, and a stationary terminal base. An insulator base is provided on the housing, and a horizontally placed cantilever beam is provided on the insulator base. A stationary terminal base is provided at the end of the cantilever beam away from the insulator base. The stationary terminal base is U-shaped, and one end of the switch is movably inserted into the stationary terminal base. The switch can clamp the stationary terminal base.

5. The rotary-type PT separator according to claim 4, characterized in that: The stable power supply mechanism includes a connecting seat, a clamping movable plate, and a compression spring. The connecting seat is provided on the housing, and the clamping movable plate is movably inserted into the connecting seat. A compression spring is provided between the clamping movable plate and the connecting seat, and a knife switch is rotatably connected to the clamping movable plate.

6. The rotary-type PT separator according to claim 5, characterized in that: The stable power supply mechanism also includes a circular power supply plate. A circular power supply plate is set on the clamping movable plate. A connecting rod is set on the circular power supply plate. A switch and a thermal expansion sleeve are sleeved on the connecting rod. A nut is threaded on the connecting rod. The nut squeezes the thermal expansion sleeve. When the thermal expansion sleeve expands due to heat, the inner ring of the thermal expansion sleeve expands, the thickness increases, and it squeezes the switch more tightly.

7. The rotary-type PT separator according to claim 1, characterized in that: The PT disconnector mechanism also includes a square power supply board, which is installed on the switch and is movably connected to the stationary terminal block.

8. The rotary-type PT separator according to claim 1, characterized in that: The PT disconnector mechanism also includes an arc-shaped power supply board. Two arc-shaped power supply boards are installed on the switch, with a gap between them to prevent the two arc-shaped power supply boards from being damaged simultaneously due to short circuit or overheating. They serve as backups for each other and are made of different materials, namely graphite and copper.

9. A rotary-type PT separator according to claim 6, characterized in that: The stable power supply mechanism also includes mating parts, which include a micro-motion elastic element, a movable cylinder, a clamping seat, and a connecting column. The movable cylinder is sleeved on the outside of the connecting column. A micro-motion groove one is opened on the connecting column, and a micro-motion groove two is opened on the inside of the movable cylinder. The micro-motion groove two corresponds to the micro-motion groove one. One end of the micro-motion elastic element extends into the micro-motion groove two, and the other end of the micro-motion elastic element extends into the micro-motion groove one.

10. A rotary-type PT separator according to claim 9, characterized in that: The micro-motion elastic element includes two limiting blocks and a U-shaped spring. The two limiting blocks are connected by the U-shaped spring. The U-shaped spring presses the limiting blocks so that the limiting blocks are tightly attached to the inner wall of the micro-motion groove.

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