Pneumatic high-voltage isolating switch

Abstract

The invention relates to the technical field of isolation switches, in particular to a pneumatic high-voltage isolation switch which comprises a supporting frame, a rotating shaft seat, a rotating shaft, an insulator, a conductive assembly, a pneumatic assembly, a sealing assembly, an oiling assembly and a transmission assembly. According to the invention, through cooperation of the sealing assembly and the oiling assembly, sealing between the static contact and the moving contact in a closed state is realized, influences of dust, moisture and the like on the conductive end are effectively isolated, and through arrangement of the oiling assembly and the transmission assembly, oil used for sealing of the sealing rod is collected. And the oil body collected by the conveying assembly is conveyed to the rotating shaft for lubricating the rotating shaft, so that the mechanical wear is further reduced, the risk of mechanical jamming is reduced, and the maintenance frequency of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of disconnect switches, and particularly to a pneumatic high-voltage disconnect switch. Background Art

[0002] A high-voltage disconnect switch is a key device used in the power system. It is mainly used to disconnect or close a circuit under the condition of having voltage but no load current to achieve the purpose of safe isolation. When maintaining power equipment or lines, the high-voltage disconnect switch can ensure safe isolation, and at the same time ensure the reliability of the power system during normal operation. This process requires extremely high precision and stability to ensure the stable operation and safety of the power system.

[0003] Existing high-voltage disconnect switches generally mainly adopt the following several types: manual disconnect switches, electric disconnect switches, pneumatic disconnect switches, and hydraulic disconnect switches. The manual disconnect switch is operated for opening and closing through a manual operating rod, and is suitable for occasions with small capacity and low voltage. Its operation is simple and the cost is low, but it requires manual operation and is suitable for environments with a low maintenance frequency; the electric disconnect switch can be remotely controlled through a control cabinet, with convenient operation, and is suitable for occasions with a high degree of automation, but it has a strong dependence on the control system and a high cost, and it is not easy to handle when the control system fails; the pneumatic disconnect switch uses compressed air as the power source, with a large operating force, rapid action, and high reliability, and is suitable for high-voltage disconnect switches with large capacity and high voltage; the hydraulic disconnect switch has a large operating force, but its structure is complex and the maintenance cost is high, and it is suitable for special occasions.

[0004] In the power system, for high voltage, large current, and complex operating environments, the mechanical stress and environmental impact generated by the disconnect switch during operation are also greater, and the requirements for the stability and reliability of the equipment are also higher. Therefore, mainly adopting the pneumatic method, high-voltage disconnect switches are mainly applied to links such as power plants, substations, and transmission lines. For power plants, the opening and closing operation frequency of the disconnect switch is relatively high, and equipment maintenance and isolation operations need to be carried out frequently. During this process, due to insufficient lubrication, mechanical wear is likely to occur, and jamming phenomena occur when disconnecting and connecting electricity. When used for a long time, due to the connection characteristics of the disconnect switch, it needs to be visibly completely disconnected when disconnecting, so it cannot be completely sealed, resulting in easy oxidation of the contact surface, pollution and moisture absorption of the contact surface, thereby increasing the resistance, poor contact, and generating more heat and other problems.

[0005] Therefore, a pneumatic high-voltage disconnect switch is proposed. Summary of the Invention

[0006] The object of the present invention is to provide a pneumatic high-voltage disconnector, which solves the problem that the contact surface is prone to oxidation, and through an oiling component and a transmission component, the sealing oil is further circulated for lubrication to prevent mechanical wear caused by long-term opening and closing of the disconnector, thereby avoiding jamming during opening and closing.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A pneumatic high-voltage disconnector includes a support frame, a rotating shaft seat, a rotating shaft, an insulator, a conductive component, a pneumatic component, a sealing component, an oiling component and a transmission component; the conductive component includes a static contact, a moving contact and a wiring seat; the pneumatic component is connected to the rotating shaft, and the pneumatic component drives the rotating shaft to rotate relative to the rotating shaft seat to close or disconnect the static contact and the moving contact; when the static contact and the moving contact are in the closed state, the sealing component seals between the port of the static contact and the moving contact; when the static contact and the moving contact rotate from the open state to the closed state, the transmission component scrapes and collects the oil body of the sealing component, and the oiling component oils the sealing component.

[0009] It can be seen that when the disconnector is in use, it often needs to perform closing and opening operations, and the conductive performance of its moving contact and static contact will be greatly affected due to reasons such as moisture, pollution and oxidation, but it is impossible to completely seal it. Moreover, for the pneumatic high-voltage disconnectors used in power plants, the equipment needs to be frequently switched on and off, so the demand for equipment maintenance frequency is also extremely high. Compared with the present invention, it not only requires more labor maintenance costs, but also the mechanical damage caused by equipment damage is irreversible.

[0010] Preferably, the conductive component further includes elastic connecting pieces symmetrically arranged on both sides of the inner wall of the static contact, and a conductive end fixedly connected to the side of the moving contact close to the static contact; when the static contact and the moving contact are in the closed state, both sides of the conductive end will squeeze the elastic connecting pieces to gradually increase the contact area between the elastic connecting pieces and the conductive end.

[0011] In the above solution, when the disconnector is closed, the moving contact and the static contact are closed, and after closing, the conductive end and the elastic connecting piece are kept in close contact by squeezing the elastic connecting piece, preventing problems such as poor contact due to loosening of the contact surface.

[0012] Preferably, the sealing component includes a sealing rod, a push rod rotatably connected to the sealing rod, a sliding connecting rod fixedly connected to both ends of the push rod and the elastic connecting piece respectively, a one-way gear connected to one end of the sealing rod, a toothed rod slidably connected to the static contact, and a push plate fixedly connected to both ends of the toothed rod; when the elastic connecting piece is squeezed, it will drive the sealing rod to move towards the port position of the static contact through the sliding connecting rod and the push rod.

[0013] In the above solution, when the disconnector is closed, the conductive end will squeeze the elastic connecting piece, drive the sliding connecting rod and the push rod connected thereto through the elastic connecting piece, so that the sealing rod moves towards the position of the static contact port, and the distance from the outer wall of the moving contact in the closed state is gradually reduced, so that the moving contact and the static contact maintain a relatively sealed state when in the closed state, reducing the occurrence of oxidation, pollution and moisture absorption.

[0014] Preferably, the end of the conductive end close to the static contact is an arc-shaped cylinder, and the end close to the moving contact is a frustum of a pyramid, and the cross-sectional area gradually increases from the static contact to the moving contact.

[0015] In the above solution, when the static contact and the moving contact are closed, the end of the conductive end close to the static contact will first enter the inner wall of the static contact, and the end of the arc-shaped cylinder prevents interference with the static contact, and through the frustum-of-a-pyramid shape that is narrow at the static contact and wide at the moving contact, the sealing rod can more conveniently achieve an adjustable sealing effect between the moving contact and the static contact.

[0016] Preferably, the sealing rod includes two groups of long rods and two groups of short rods; the long rods are arranged on both sides of the inner wall of the static contact, and the short rods are arranged above and below the inner wall of the static contact. One end of the long rods and the short rods connected to the one-way gear are closely attached to the inner wall of the static contact, and the short rods are located on the side where the long rods are not connected to the one-way gear, and the long rods are located on the side where the short rods are not connected to the one-way gear. When the static contact and the moving contact are in the closed state, the two groups of long rods and the two groups of short rods form a closed "mouth" shape, and the push rod is connected to one group of long rods and one group of short rods at the same time; the one-way gear is adapted to the toothed rod, and the one-way gear will only drive the connected sealing rod to rotate when the toothed rod moves towards the static contact direction.

[0017] In the above solution, the sealing rod adopts a combination of long rods and short rods, which is suitable for the space with a longer width on both sides and a shorter width above and below the inner wall of the static contact. The push rod drives the long rods and the short rods to approach the position of the static contact port at the same time to achieve sealing, and ensures that they are on the same plane, so that the adjustment of the seal has better stability.

[0018] Preferably, the oiling assembly includes a storage tank, an oiling pipe arranged on the side of the sealing rod close to the static contact, and a number of groups of oiling beads evenly distributed on the oiling pipe; the oiling beads are closely attached to the sealing rod when the static contact and the moving contact are in the disconnected state.

[0019] In the above solution, when the static contact and the moving contact are in the open state, the sealing rod is located at a position far from the port of the static contact and is in close contact with the upper oil bead. The upper oil bead is arranged to roll between the upper oil pipe, which can control the flow of the oil body. When the static contact and the moving contact change from the open state to the closed state, the upper oil bead will roll under the rotation of the sealing rod and evenly apply oil to the outer wall of the sealing rod, and ensure that the oil layer on the outer wall of the sealing rod will not be too thick when in the closed state. When the sealing rod conducts sealing, the oil body will contact the inner wall of the static contact and the conductive end through surface tension, thereby achieving a further sealing effect on the position relative to the port of the static contact.

[0020] Preferably, the transmission assembly includes a scraping oil pipe and an oil suction pump connected to the scraping oil pipe; the scraping oil pipe is in close contact with the sealing rod when the static contact and the moving contact are in the open state, and the scraping oil pipe is located on the side of the upper oil pipe close to the conductive end.

[0021] In the above solution, when the static contact and the moving contact change from the open state to the closed state, the scraping oil pipe will first scrape off the used oil body on the outer wall of the sealing rod when the sealing rod rotates, and then the sealing rod will contact the upper oil bead, and the surface of the sealing rod will be clean and unused oil through the upper oil bead, so as to maintain the surface tension and sealing effect of the oil body, and the oil body scraped off by the scraping oil pipe will be transmitted to the position of the rotating shaft by the oil suction pump to lubricate the position of the rotating shaft.

[0022] It can be seen that the sealing effect on the position of the static contact cannot achieve complete sealing. By attaching the oil body to the outer wall of the sealing rod, the sealing effect can be effectively realized, achieving the effects of isolation, moisture prevention and oxidation prevention. And for the pneumatic disconnector that needs to be switched on and off frequently, the sealing effect of the oil body can be maintained by replacing the oil body each time, and the scraped oil body can be recycled to lubricate the position of the rotating shaft.

[0023] Preferably, the pneumatic assembly includes a cylinder, a driving sleeve rod connected to the driving end of the cylinder, and a first synchronizing rod and a second synchronizing rod connected to the rotating shaft; one end of the driving sleeve rod is rotatably connected to the rotating shaft; starting the pneumatic assembly drives the rotating shaft connected to a plurality of groups of static contacts to rotate in the same direction and at the same angle, and drives the rotating shaft connected to a plurality of groups of moving contacts to rotate in the opposite direction and at the same angle.

[0024] In the above solution, starting the cylinder will cause the driving sleeve rod to drive the rotating shaft connected to it to rotate, and through the first synchronizing rod and the second synchronizing rod, a plurality of rotating shafts will rotate. Among them, the rotating shaft connected to the static contact and the rotating shaft connected to the moving contact will rotate in opposite directions and at the same angle, achieving the effect of switching on and off the disconnector.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. For traditional high-voltage disconnectors, it is difficult to achieve complete sealing between the static contact and the moving contact in the open state, resulting in the contact surface being easily affected by oxidation, pollution, and moisture, thereby affecting the electrical conductivity. In the present invention, through the cooperation of the sealing component and the oiling component, sealing between the static contact and the moving contact in the closed state is achieved. When the disconnector changes from the open state to the closed state, the sealing rod moves to the ports of the moving contact and the static contact, forming a sealed "mouth" - shaped structure, effectively isolating the influence of dust, moisture, etc. on the conductive end. At the same time, the oiling component oils the sealing rod when the disconnector changes from the open state to the closed state, ensuring the tightness and surface tension of the oil body, thereby maintaining the stability of the sealing performance of the disconnector.

[0027] 2. In the frequent opening and closing operations of existing high-voltage disconnectors, due to long-term use and insufficient lubrication, mechanical wear is likely to occur, which may further lead to jamming. By setting up the oiling component and the transmission component, the oil used for sealing the sealing rod is collected, and the oil collected by the transmission component is transported to the rotating shaft for lubricating the rotating shaft, further reducing mechanical wear, reducing the risk of mechanical jamming, and reducing the maintenance frequency of the staff.

[0028] 3. During the opening and closing operations of the high-voltage disconnector, especially when closing, since the static contact and the moving contact will have a certain degree of jamming when rotating to the closed state, during this process, the side of the conductive end will contact the port position of the static contact and cause mechanical wear, resulting in jamming. Long-term wear is likely to cause the closing to become loose, thereby resulting in poor contact. After the sealing rod is oiled by the oiling component, when the disconnector closes, it will move to the port of the static contact, and relatively seal between the static contact and the moving contact through the oil body. During this process, there will be an oil film on the inner wall surface of the static contact. When the moving contact and the static contact open and close, the oil film will make the closing smoother, reducing the mechanical wear during the opening and closing of the disconnector and preventing the occurrence of opening and closing jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the pneumatic high-voltage disconnector;

[0030] Figure 2 It is a side view of the overall structure of the pneumatic high-voltage disconnector;

[0031] Figure 3 It is for the Figure 1 enlarged schematic diagram of part A in the pneumatic high-voltage disconnector;

[0032] Figure 4 It is a schematic diagram of the structure of the pneumatic high-voltage disconnector in the open state;

[0033] Figure 5 It is for the Figure 4Schematic diagram of the enlarged structure at B in the [Chinese context];

[0034] Figure 6 Schematic diagram of the oiling process for the sealing component of a pneumatic high - voltage disconnector;

[0035] Figure 7 Schematic diagram of the one - way gear structure of a pneumatic high - voltage disconnector;

[0036] Figure 8 Schematic diagram of the oiling component and transmission component of a pneumatic high - voltage disconnector;

[0037] Figure 9 Schematic diagram of the closing process of a pneumatic high - voltage disconnector.

[0038] In the figure: 100, support frame; 200, rotating shaft seat; 300, rotating shaft; 400, insulator; 500, conductive component; 501, static contact; 502, moving contact; 503, terminal block; 504, elastic connecting piece; 505, conductive end; 600, pneumatic component; 601, cylinder; 602, driving sleeve rod; 603, first synchronous rod; 604, second synchronous rod; 700, sealing component; 701, sealing rod; 701a, long rod; 701b, short rod; 702, push rod; 703, sliding connecting rod; 704, one - way gear; 705, toothed rod; 706, push plate; 800, oiling component; 801, storage tank; 802, oiling pipe; 803, oiling bead; 900, transmission component; 901, scraping oil pipe; 902, oil suction pump. Detailed implementation manners

[0039] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made with reference to the accompanying drawings of the specification.

[0040] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can obtain other implementation manners without departing from the connotation of the present invention and without creative efforts. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0041] Please refer to Figures 1 to 9 , the present invention provides a pneumatic high - voltage disconnector, and the technical solution is as follows:

[0042] A pneumatic high-voltage disconnector, comprising a support frame 100, a rotating shaft seat 200, a rotating shaft 300, an insulator 400, a conductive component 500, a pneumatic component 600, a sealing component 700, an oiling component 800 and a transmission component 900. The conductive component 500 includes a static contact 501, a moving contact 502, a terminal block 503, an elastic connecting piece 504 and a conductive end 505. The pneumatic component 600 includes a cylinder 601, a driving sleeve rod 602, a first synchronizing rod 603 and a second synchronizing rod 604. The sealing component 700 includes a sealing rod 701, a pushing rod 702, a sliding connecting rod 703, a one-way gear 704, a rack 705 and a pushing plate 706. The oiling component 800 includes a storage tank 801, an oiling pipe 802 and an oiling bead 803. The transmission component 900 includes an oil scraping pipe 901 and an oil suction pump 902.

[0043] As an embodiment of the present invention, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , it includes a support frame 100, a rotating shaft seat 200, a rotating shaft 300, an insulator 400, a conductive component 500, a pneumatic component 600, a sealing component 700, an oiling component 800 and a transmission component 900; the conductive component 500 includes a static contact 501, a moving contact 502 and a terminal block 503; the pneumatic component 600 is connected to the rotating shaft 300, and the pneumatic component 600 drives the rotating shaft 300 to rotate relative to the rotating shaft seat 200, closing or disconnecting the static contact 501 and the moving contact 502; when the static contact 501 and the moving contact 502 are in the closed state, the sealing component 700 seals between the port of the static contact 501 and the moving contact 502; when the static contact 501 and the moving contact 502 rotate from the disconnected state to the closed state, the transmission component 900 scrapes and collects the oil body of the sealing component 700, and the oiling component 800 oils the sealing component 700.

[0044] As an embodiment of the present invention, referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 9, the conductive component 500 further includes elastic connecting pieces 504 symmetrically arranged on both sides of the inner wall of the static contact 501, and a conductive end 505 fixedly connected to the side of the moving contact 502 close to the static contact 501; when the static contact 501 and the moving contact 502 are in the closed state, both sides of the conductive end 505 will squeeze the elastic connecting pieces 504, causing the contact area between the elastic connecting pieces 504 and the conductive end 505 to gradually increase. When the disconnector is closed, the moving contact 502 and the static contact 501 are closed, and after closing, the conductive end 505 and the elastic connecting pieces 504 are kept in close contact by squeezing the elastic connecting pieces 504, preventing problems such as poor contact due to loose contact surfaces.

[0045] It should be noted that when in use, the disconnector consists of two sets of rotating shaft seats 200, two sets of rotating shafts 300, two sets of insulators 400, and one set of conductive components 500. The static contact 501 and the moving contact 502 are respectively connected to two sets of rotating shafts 300 symmetrically arranged along the axis of the support frame 100, and in this embodiment, three disconnectors are longitudinally and evenly arranged along the axis of the support frame 100; the elastic connecting pieces 504 are electrically connected to the wiring seat 503 through rigid connections.

[0046] As an implementation manner of the present invention, referring to Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 9 , the sealing component 700 includes a sealing rod 701, a push rod 702 rotatably connected to the sealing rod 701, a sliding connecting rod 703 fixedly connected to both ends of the push rod 702 and the elastic connecting piece 504 respectively, a one-way gear 704 connected to one end of the sealing rod 701, a rack 705 slidably connected to the static contact 501, and a push plate 706 fixedly connected to both ends of the rack 705; when the elastic connecting piece 504 is squeezed, it will drive the sealing rod 701 to move towards the port position of the static contact 501 through the sliding connecting rod 703 and the push rod 702. When the disconnector is closed, the conductive end 505 will squeeze the elastic connecting piece 504, driving the sliding connecting rod 703 and the push rod 702 connected thereto through the elastic connecting piece 504, causing the sealing rod 701 to move towards the port position of the static contact 501 and gradually reducing the distance from the outer wall of the moving contact 502 in the closed state, so that the moving contact 502 and the static contact 501 maintain a relatively sealed state in the closed state, reducing the occurrence of oxidation, pollution, and moisture absorption.

[0047] It should be noted that the push rod 702 is rotatably connected to the sealing rod 701; a spring is connected to one side of the push plate 706 close to the static contact 501, which can push the push plate 706 and the toothed plate to reset to a position close to the sealing rod 701 when in the open state. The two ends of the spring are respectively connected to the push plate 706 and the static contact 501. The sliding connecting rod 703 is divided into three sections. The first section is fixedly connected to the push rod 702 and is slidably connected to the sandwich layer of the static contact 501. The second section is fixedly connected to the outside of the elastic connecting piece 504. The third section is rotatably connected to the second section and the first section respectively. When the elastic connecting piece 504 is squeezed, it will push the second section of the sliding connecting rod 703 and drive the first section, the push rod 702 and the sealing rod 701 to move through the third section.

[0048] As an implementation manner of the present invention, referring to Figure 3 、 Figure 4 or Figure 9 , one end of the conductive end 505 close to the static contact 501 is an arc-shaped cylinder, and one end close to the moving contact 502 is a frustum of a pyramid shape, and the cross-sectional area gradually increases from the static contact 501 to the moving contact 502. When the static contact 501 and the moving contact 502 are closed, one end of the conductive end 505 close to the static contact 501 will first enter the inner wall of the static contact 501. The end of the arc-shaped cylinder prevents interference with the static contact 501, and through the frustum of a pyramid shape that is narrow at the static contact 501 and wide at the moving contact 502, the sealing rod 701 can more easily achieve an adjustable sealing effect between the moving contact 502 and the static contact 501.

[0049] As an implementation manner of the present invention, referring to Figure 3 、 Figure 5 、 Figure 7 and Figure 9 , the sealing rod 701 includes two groups of long rods 701a and two groups of short rods 701b; the long rods 701a are arranged on both sides of the inner wall of the static contact 501, and the short rods 701b are arranged above and below the inner wall of the static contact 501. One end of the long rods 701a and the short rods 701b connected to the one-way gear 704 are both in close contact with the inner wall of the static contact 501, and the short rods 701b are located on the side where the long rods 701a are not connected to the one-way gear 704, and the long rods 701a are located on the side where the short rods 701b are not connected to the one-way gear 704. When the static contact 501 and the moving contact 502 are in the closed state, the two groups of long rods 701a and the two groups of short rods 701b form a closed "mouth" shape. The push rod 702 is connected to one group of long rods 701a and one group of short rods 701b at the same time; the one-way gear 704 is adapted to the toothed rod 705, and the one-way gear 704 will only drive the connected sealing rod 701 to rotate when the toothed rod 705 moves towards the static contact 501.

[0050] As an implementation manner of the present invention, referring to Figure 1 、 Figure 3 、Figure 5 , Figure 6 and Figure 8 , the oiling assembly 800 includes a storage tank 801, an oil pipe 802 disposed on the side of the static contact 501 of the sealing rod 701, and a plurality of groups of oil beads 803 evenly distributed on the oil pipe 802; the oil beads 803 are in close contact with the sealing rod 701 when the static contact 501 and the moving contact 502 are in the open state, and when the static contact 501 and the moving contact 502 are in the open state, the sealing rod 701 is located at a position away from the port of the static contact 501 and is in close contact with the oil beads 803. The oil beads 803 are rotatably arranged with the oil pipe 802, which can control the flow of the oil body. When the static contact 501 and the moving contact 502 change from the open state to the closed state, the oil beads 803 will roll under the rotation of the sealing rod 701 and evenly oil the outer wall of the sealing rod 701, and ensure that the oil layer on the outer wall of the sealing rod 701 will not be too thick when in the closed state. When the sealing rod 701 performs sealing, the oil body will contact the inner wall of the static contact 501 and the conductive end 505 through surface tension, thereby further sealing the position relative to the port of the static contact 501.

[0051] As an embodiment of the present invention, referring to Figure 1 , Figure 6 and Figure 8 , the transmission assembly 900 includes a scraping oil pipe 901 and an oil suction pump 902 connected to the scraping oil pipe 901; the scraping oil pipe 901 is in close contact with the sealing rod 701 when the static contact 501 and the moving contact 502 are in the open state. The scraping oil pipe 901 is located on the side of the oil pipe 802 close to the conductive end 505. When the static contact 501 and the moving contact 502 change from the open state to the closed state, the scraping oil pipe 901 will first scrape off the used oil body on the outer wall of the sealing rod 701 when the sealing rod 701 rotates, and then the sealing rod 701 will contact the oil beads 803, and the surface of the sealing rod 701 will be clean and unused oil through the oil beads 803, so as to maintain the surface tension and sealing effect of the oil body, and the oil body scraped off by the scraping oil pipe 901 is collected by the oil suction pump 902 and transmitted to the position of the rotating shaft 300 after filtration, which plays a lubricating effect on the position of the rotating shaft 300. Due to a certain rotational speed difference between the rolling balls and the shaft body when the rotating shaft 300 rotates, the oil body is gradually and evenly lubricated; the oil suction pump 902 can be set to start after closing.

[0052] As an embodiment of the present invention, referring to Figure 1 and Figure 3, the pneumatic component 600 includes a cylinder 601, a driving sleeve rod 602 connected to the driving end of the cylinder 601, and a first synchronizing rod 603 and a second synchronizing rod 604 connected to the rotating shaft 300; one end of the driving sleeve rod 602 is rotatably connected to the rotating shaft 300, the driving sleeve rod 602 is divided into multiple groups, and both ends are respectively connected to the end of the driving rod of the cylinder 601 and the edge of a group of the rotating shaft 300; starting the cylinder 601 will drive the rotating shaft 300 connected to several groups of static contacts 501 to rotate in the same direction and at the same angle through the driving sleeve rod 602, the first synchronizing rod 603 and the second synchronizing rod 604, and will drive the rotating shaft 300 connected to several groups of moving contacts 502 to rotate in the opposite direction and at the same angle. The starting cylinder 601 will cause the driving sleeve rod 602 to drive the rotating shaft 300 connected thereto to rotate, and through the first synchronizing rod 603 and the second synchronizing rod 604, several groups of rotating shafts 300 will be driven to rotate. Among them, the rotating shaft 300 connected to the static contact 501 and the rotating shaft 300 connected to the moving contact 502 will rotate in opposite directions and at the same angle, achieving the effect of opening and closing the disconnector. Among them, the first synchronizing rod 603 is used to connect the disconnectors in the same group to make them rotate in opposite directions and at the same angle, and the second synchronizing rod 604 is used to connect the disconnectors in different groups axially distributed on the support frame 100, so that the disconnectors in different groups longitudinally distributed rotate synchronously.

[0053] Working principle: When opening the switch, the cylinder 601 drives the rotating shaft 300 to rotate through the driving sleeve rod 602, so that the moving contact 502 is separated from the static contact 501; when closing the switch, the cylinder 601 drives the rotating shaft 300 in the reverse direction, the moving contact 502 approaches and closes the static contact 501. At the same time, the oil scraping pipe 901 scrapes the old lubricating oil on the sealing rod 701, and then the oil beads 803 oil the sealing rod 701 again. The elastic connecting piece 504 is squeezed to increase the contact area between the conductive end 505 and the elastic connecting piece 504 to ensure good electrical conductivity. At this time, the sealing rod 701 moves to the port of the static contact 501 through the sliding connecting rod 703 and the pushing rod 702, approaches the surface of the moving contact 502, and maintains and ensures the sealing performance through the oil body; the lubricating oil collected by the oil scraping pipe 901 can be transmitted to the rotating shaft 300 through the oil suction pump 902 for lubrication, reducing mechanical wear and ensuring smooth operation of the equipment.

[0054] Specifically, when disconnecting, refer to Figure 1 , Figure 4 , Figure 5 and Figure 9, starting the cylinder 601 will cause the driving sleeve rod 602 to drive the rotating shaft 300 connected thereto to rotate, and through the first synchronizing rod 603 and the second synchronizing rod 604, the array of rotating shafts 300 will be driven to rotate. Among them, the rotating shaft 300 connected to the static contact 501 and the rotating shaft 300 connected to the moving contact 502 will be driven by the first synchronizing rod 603, so that the static contact 501 and the moving contact 502 will rotate in opposite directions with the same angle, achieving the effect of opening the disconnecting switch, and the second synchronizing rod 604 is used to connect different groups of disconnecting switches axially distributed on the support frame 100, so that different groups of disconnecting switches longitudinally distributed rotate synchronously, so that the conductive component 500 is disconnected in a visible form to the naked eye and grounded, so that the staff can work safely.

[0055] When closing the switch, refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9 , starting the cylinder 601 to move in the opposite direction causes the driving sleeve rod 602 to drive the rotating shaft 300 connected thereto to rotate. At this time, the edge of the conductive end 505 will first contact the static contact 501, and the oil film left on the inner wall of the static contact 501 when the sealing rod 701 is disconnected is passed through, so that the conductive end 505 can be more smoothly closed with the static contact 501 in the state of being lubricated by the oil film. Refer to Figure 3 , Figure 5 , Figure 7 and Figure 9 , the end of the conductive end 505 will first contact the push plate 706 and drive the push plate 706 to slide in the direction of the static contact 501. The push plate 706 will drive the rack 705 connected thereto to move synchronously. At this time, the one-way gear 704 will be driven to rotate by the rack 705. Through the limiting structure of the one-way gear 704, the one-way gear 704 will only drive the sealing rod 701 to rotate simultaneously when rotating in this direction. Refer to Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 , the sealing rod 701 rotates in the direction of the static contact 501 on the side close to the axis line of the static contact 501, scraping off the oil body used for sealing during the previous closing through the oil scraping pipe 901. At the same time, the outer wall of the sealing rod 701 after being scraped with oil will contact the upper oil bead 803. The sealing rod 701 drives the upper oil bead 803, so that the upper oil bead 803 rolls in the upper oil pipe 802, so that the outer wall of the sealing rod 701 is evenly oiled. By the oiling method of the upper oil bead 803, it can be ensured that the oil layer on the outer wall of the sealing rod 701 will not be too thick after oiling. Subsequently, refer to Figure 1 , Figure 3 , Figure 5 and Figure 9, the conductive end 505 gradually squeezes the elastic connecting piece 504. When being squeezed, the elastic connecting piece 504 deforms towards the outer wall direction of the static contact 501 due to its elastic property. At this time, the elastic connecting piece 504 will push the sliding connecting rod 703 to drive the push rod 702 and the sealing rod 701 to move towards the moving contact 502, so that the sealing rod 701 gradually approaches the outer wall of the conductive end 505 to form a relative seal. At the same time, under the action of the surface tension of the oil body, the gap between the sealing rod 701 and the inner wall of the static contact 501 and the outer wall of the conductive end 505 is filled, thus ensuring the sealing effect and preventing the contact surface of the conductive end 505 from being contaminated, affected by moisture or oxidation.

[0056] During transmission, referring to Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 , the oil suction pump 902 can be set to suck oil when closed, and conduct conventional filtration on the sucked oil body, and then transmit it to the rotating shaft 300. When the disconnector is just put into use, the oil body transmitted by the oil suction pump 902 is less. At this time, the rotating shaft 300 is in the newly manufactured state and the mechanical lubrication effect is better. After long-term use, problems such as gradually deteriorated lubrication effect and poor lubrication occur at the rotating shaft 300. At this time, with the accumulation and filling of the oil body in the oil transmission pipe connected to the oil suction pump 902 for a period of time, the oil body is also transmitted to the rotating shaft 300. When the rotating shaft 300 rotates during opening and closing, a certain rotational speed difference will be generated between the balls and the shaft body in the rotating shaft 300, so as to be gradually and evenly distributed at the shaft body of the rotating shaft 300, realizing a good cycle of converting the sealed oil body into lubricating oil.

[0057] The above embodiments are only used to illustrate some examples of the feasible technical solutions of the present invention rather than limiting the embodiments. The present invention can be understood in more detail with reference to the embodiments. Those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A pneumatic high-voltage isolating switch, characterized in that: It comprises a support frame (100), a rotating shaft seat (200), a rotating shaft (300), an insulator (400), a conductive component (500), a pneumatic component (600), a sealing component (700), an oiling component (800) and a transmission component (900); The conductive component (500) comprises a stationary contact (501), a moving contact (502) and a terminal block (503); the pneumatic component (600) is connected to the rotating shaft (300), and the pneumatic component (600) drives the rotating shaft (300) to rotate, thereby closing or disconnecting the stationary contact (501) and the moving contact (502); when the stationary contact (501) and the moving contact (502) are in a closed state, the sealing component (700) seals between the stationary contact (501) port and the moving contact (502); when the stationary contact (501) and the moving contact (502) rotate from a disconnected state to a closed state, the transmission component (900) scrapes and collects oil on the surface of the sealing component (700), and the oiling component (800) oils the sealing component (700).

2. The pneumatic high-voltage disconnector according to claim 1, characterized in that: The conductive component (500) further comprises elastic connecting pieces (504) symmetrically arranged on both sides of the inner wall of the stationary contact (501), and a conductive end (505) fixedly connected to the side of the moving contact (502) close to the stationary contact (501); when the stationary contact (501) and the moving contact (502) are in a closed state, the two sides of the conductive end (505) will squeeze the elastic connecting piece (504) so ​​that the contact area between the elastic connecting piece (504) and the conductive end (505) gradually increases.

3. The pneumatic high-voltage disconnector according to claim 2 is characterized in that: The sealing assembly (700) includes a sealing rod (701), a push rod (702) rotatably connected to the sealing rod (701), a sliding connecting rod (703) whose two ends are respectively fixedly connected to the push rod (702) and the elastic connecting piece (504), a one-way gear (704) connected to one end of the sealing rod (701), a toothed rod (705) slidably connected to the stationary contact (501), and a push plate (706) whose two ends are fixedly connected to the toothed rod (705); when the elastic connecting piece (504) is squeezed, it drives the sealing rod (701) to move toward the port position of the stationary contact (501) through the sliding connecting rod (703) and the push rod (702).

4. The pneumatic high-voltage disconnector according to claim 3 is characterized in that: The conductive end (505) is in the shape of an arc-surface cylinder at one end close to the static contact (501), and in the shape of a quadrangular pyramid at one end close to the dynamic contact (502), and the cross-sectional area gradually increases from the static contact (501) to the dynamic contact (502).

5. The pneumatic high-voltage disconnector according to claim 3 or 4, characterized in that: The sealing rod (701) comprises two groups of long rods (701a) and two groups of short rods (701b); the long rods (701a) are arranged at positions on both sides of the inner wall of the static contact (501), and the short rods (701b) are arranged at upper and lower positions of the inner wall of the static contact (501); the ends of the long rods (701a) and the short rods (701b) connected to the one-way gear (704) are both in close contact with the inner wall of the static contact (501), and the short rods (701b) are located on the side of the long rods (701a) that is not connected to the one-way gear (704); the long rods (701a) are located at the inner wall of the static contact (501); On the side where the short rod (701b) is not connected to the one-way gear (704), when the static contact (501) and the moving contact (502) are in a closed state, the two groups of long rods (701a) and the two groups of short rods (701b) form a closed "mouth" shape, and the push rod (702) is simultaneously connected to a group of long rods (701a) and a group of short rods (701b); the one-way gear (704) is adapted to the toothed rod (705), and the one-way gear (704) will only drive the sealing rod (701) connected thereto to rotate when the toothed rod (705) moves toward the static contact (501).

6. The pneumatic high-voltage disconnector according to claim 5, characterized in that: The oiling assembly (800) comprises a storage tank (801), an oiling pipe (802) arranged on the side of the sealing rod (701) close to the static contact (501), and a plurality of groups of oiling beads (803) evenly distributed on the oiling pipe (802); the oiling beads (803) are in close contact with the sealing rod (701) when the static contact (501) and the moving contact (502) are in a disconnected state.

7. The pneumatic high-voltage disconnector according to claim 6, characterized in that: The transmission component (900) comprises an oil scraper pipe (901) and an oil suction pump (902) connected to the oil scraper pipe (901); the oil scraper pipe (901) is in close contact with the sealing rod (701) when the static contact (501) and the moving contact (502) are in a disconnected state, and the oil scraper pipe (901) is located on a side of the upper oil pipe (802) close to the conductive end (505).

8. The pneumatic high-voltage disconnector according to claim 6 or 7, characterized in that: The pneumatic assembly (600) comprises a cylinder (601), a driving sleeve rod (602) connected to the driving end of the cylinder (601), and a first synchronization rod (603) and a second synchronization rod (604) connected to the rotating shaft (300); one end of the driving sleeve rod (602) is rotatably connected to the rotating shaft (300); starting the pneumatic assembly (600) drives the rotating shaft (300) connected to a plurality of groups of stationary contacts (501) to rotate in the same direction and at the same angle, and causes the rotating shaft (300) connected to a plurality of groups of moving contacts (502) to rotate in the opposite direction and at the same angle.

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