Ultrahigh-voltage circuit breaker operating mechanism

Abstract

The invention discloses an ultrahigh-voltage circuit breaker operating mechanism, which relates to the technical field of circuit breakers and comprises a rigid connecting rod, a permanent magnet holding module, a holding block, a static opening coil, a static closing coil, a repulsive force disc and a dynamic power module, the retaining block and the repulsive force disc are fixedly arranged on the rigid connecting rod in a sleeving manner, the retaining block is arranged in a first moving channel between the permanent magnet retaining module and the static opening coil, the repulsive force disc is arranged in a second moving channel between the static opening coil and the static closing coil, and the dynamic power module is fixedly arranged outside the second moving channel in a sleeving manner; the permanent magnet holding module can provide upward suction force for the holding block; the static opening coil is electrified to provide downward repulsive force for the repulsive force disc; the static closing coil is electrified to provide upward repulsive force for the repulsive force disc; the dynamic power module is electrified to provide downward repulsive force or upward repulsive force for the repulsive force disc; the mechanism is compact in structure, quick and stable in opening and closing actions, excellent in reliability and long in service life, and meets the quick operation requirement of the ultrahigh-voltage circuit breaker.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a operating mechanism for ultra-high voltage circuit breakers. Background Art

[0002] With the continuous expansion of the scale of the power system and the improvement of the reliability requirements of the power grid, as a key component in power equipment, the opening and closing performance of ultra-high voltage circuit breakers is directly related to the safety and stability of the power grid operation.

[0003] Traditional operating mechanisms for circuit breakers mainly rely on mechanical springs or hydraulic drive methods. These methods have problems such as slow action speed, complex structure, insufficient reliability, and high maintenance costs in practical applications. Especially in scenarios that require fast actions and multiple operations, traditional operating mechanisms are difficult to meet the high-frequency and high-intensity usage requirements. In addition, due to the difficulty in achieving non-linear control of energy release, conventional operating mechanisms may generate large impact forces during operation, resulting in component wear and performance degradation. Therefore, traditional operating mechanisms for circuit breakers are difficult to meet the technical development needs of ultra-high voltage circuit breakers. Summary of the Invention

[0004] The purpose of the present invention is to provide an operating mechanism for ultra-high voltage circuit breakers to solve the problems existing in the above-mentioned prior art, which is compact in structure, has fast and stable opening and closing actions, has excellent reliability and service life, and meets the fast operation requirements of ultra-high voltage circuit breakers.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention provides an operating mechanism for ultra-high voltage circuit breakers, including a rigid connecting rod, a permanent magnet holding module, a holding block, a static opening coil, a static closing coil, a repulsive disk, and a dynamic power module; the rigid connecting rod can move upward or downward, the top of the rigid connecting rod is used for driving connection with a moving contact in an arc extinguishing chamber, the permanent magnet holding module, the static opening coil, and the static closing coil are fixedly arranged in sequence from top to bottom, the permanent magnet holding module, the static opening coil, and the static closing coil are sleeved outside the rigid connecting rod, the holding block and the repulsive disk are both fixedly sleeved on the rigid connecting rod, the holding block is placed in a first moving channel between the permanent magnet holding module and the static opening coil, the repulsive disk is placed in a second moving channel between the static opening coil and the static closing coil, and the dynamic power module is fixedly sleeved outside the second moving channel; the permanent magnet holding module can provide an upward suction force to the holding block; when the static opening coil is energized, it can provide a downward repulsive force to the repulsive disk; when the static closing coil is energized, it can provide an upward repulsive force to the repulsive disk; when the dynamic power module is energized, it can provide a downward repulsive force or an upward repulsive force to the repulsive disk.

[0006] Preferably, a spring holding module is further included. The spring holding module is placed below the static closing coil. The spring holding module is sleeved outside the rigid connecting rod. The spring holding module is connected to the rigid connecting rod. The spring holding module can provide a downward elastic force or an upward elastic force to the rigid connecting rod.

[0007] Preferably, the spring holding module includes a spring holding unit housing, a connecting block, a plurality of first compression springs, a plurality of spring middle rods and a plurality of spring bases. The spring holding unit housing is fixedly placed below the static closing coil. The spring holding unit housing is sleeved outside the rigid connecting rod. The connecting block, the first compression springs, the spring middle rods and the spring bases are all placed inside the spring holding unit housing. The connecting block is fixedly sleeved on the rigid connecting rod. The number of the first compression springs, the number of the spring middle rods and the number of the spring bases are equal. The first compression springs, the spring middle rods and the spring bases correspond to each other one by one. The first compression springs, the spring middle rods and the spring bases are all arranged around the rigid connecting rod. The spring bases are fixedly arranged on the inner side wall of the spring holding unit housing. The first compression springs are sleeved on the spring middle rods. The spring middle rods are elastic. One end of the spring middle rod and one end of the first compression spring are both connected to the spring base. The other end of the spring middle rod and the other end of the first compression spring are both connected to the connecting block. The first compression spring can provide a downward elastic force or an upward elastic force to the rigid connecting rod. The spring holding module further includes a limiting block. The limiting block is fixedly sleeved on the bottom end of the rigid connecting rod. A through hole is formed in the bottom of the spring holding unit housing. The through hole can prevent the limiting block from passing through.

[0008] Preferably, a buffer module is further included. The buffer module is placed below the spring holding module. The buffer module can contact with the bottom end of the rigid connecting rod and provide an upward buffer force to the rigid connecting rod.

[0009] Preferably, the buffer module includes an oil buffer and a bottom fixing block. The bottom fixing block is fixedly placed below the spring holding module. The oil buffer is arranged on the bottom fixing block. The top end of the oil buffer can contact with the bottom end of the rigid connecting rod. The oil buffer can provide an upward buffer force to the rigid connecting rod.

[0010] Preferably, a second compression spring is further included. The second compression spring is placed between the holding block and the static opening coil. The second compression spring is sleeved outside the rigid connecting rod. The second compression spring can provide an upward elastic force to the holding block.

[0011] Preferably, it further includes a plurality of fixed insulating rods, each of the fixed insulating rods is arranged around the rigid connecting rod, and the permanent magnet holding module, the static opening coil, the dynamic power module and the static closing coil are all fixedly connected to the fixed insulating rod; the permanent magnet holding module includes a magnetic holding device housing and a plurality of permanent magnets, a plurality of annular grooves are formed on the magnetic holding device housing, the number of the annular grooves is equal to the number of the permanent magnets, the annular grooves correspond to the permanent magnets one by one, and the permanent magnets are fixedly arranged in the annular grooves.

[0012] Preferably, the dynamic power module includes a plurality of power coil discs, each of the power coil discs is fixedly sleeved outside the second moving channel in sequence from top to bottom, and when the power coil discs are energized, they can provide a downward repulsive force or an upward repulsive force to the repulsive disc.

[0013] Preferably, it further includes a coil driving power supply, the coil driving power supply includes a static coil power supply unit and a power coil disc power supply unit, the static coil power supply unit is electrically connected to the static opening coil and the static closing coil, the static coil power supply unit can supply power to the static opening coil and the static closing coil, the power coil disc power supply unit includes a plurality of power supply modules, the number of the power supply modules is equal to the number of the power coil discs, the power supply modules correspond to the power coil discs one by one, the power supply modules are electrically connected to the power coil discs, and the power supply modules can supply power to the power coil discs.

[0014] Preferably, the static coil power supply unit includes a first capacitor, a second capacitor, a first freewheeling diode, a second freewheeling diode, a first power transistor, a second power transistor, a third power transistor, a fourth power transistor, a first output terminal, a second output terminal, a third output terminal and a fourth output terminal. The positive electrode of the first capacitor, the negative electrode of the first freewheeling diode and one end of the first power transistor are electrically connected. The other end of the first power transistor is electrically connected to the first output terminal. The negative electrode of the first capacitor, the positive electrode of the first freewheeling diode and one end of the second power transistor are electrically connected. The other end of the second power transistor is electrically connected to the second output terminal. The negative electrode of the second capacitor is electrically connected to the negative electrode of the first capacitor. The positive electrode of the second capacitor, the negative electrode of the second freewheeling diode and one end of the third power transistor are electrically connected. The other end of the third power transistor is electrically connected to the third output terminal. The negative electrode of the second capacitor, the positive electrode of the second freewheeling diode and one end of the fourth power transistor are electrically connected. The other end of the fourth power transistor is electrically connected to the fourth output terminal. The power supply module includes a third capacitor, a fourth capacitor, a third freewheeling diode, a fourth freewheeling diode, a fifth power transistor, a sixth power transistor, a seventh power transistor, an eighth power transistor, a fifth output terminal and a sixth output terminal. The positive electrode of the third capacitor, the negative electrode of the third freewheeling diode and one end of the fifth power transistor are electrically connected. The other end of the fifth power transistor is electrically connected to the fifth output terminal. The negative electrode of the third capacitor, the positive electrode of the third freewheeling diode and one end of the sixth power transistor are electrically connected. The other end of the sixth power transistor is electrically connected to the fifth output terminal. The negative electrode of the fourth capacitor is electrically connected to the negative electrode of the third capacitor. The positive electrode of the fourth capacitor, the negative electrode of the fourth freewheeling diode and one end of the seventh power transistor are electrically connected. The other end of the seventh power transistor is electrically connected to the sixth output terminal. The negative electrode of the fourth capacitor, the positive electrode of the fourth freewheeling diode and one end of the eighth power transistor are electrically connected. The other end of the eighth power transistor is electrically connected to the sixth output terminal. The first output terminal and the third output terminal are electrically connected to the static opening coil. The second output terminal and the fourth output terminal are electrically connected to the static closing coil. The fifth output terminal and the sixth output terminal are electrically connected to the power coil disc.

[0015] The present invention has achieved the following technical effects compared with the prior art: The operating mechanism of the ultra-high voltage circuit breaker provided by the present invention is provided with the top end of a rigid connecting rod for driving connection with the moving contact in the arc extinguishing chamber. The upward movement of the rigid connecting rod provides closing drive for the moving contact in the arc extinguishing chamber, and the downward movement of the rigid connecting rod provides opening drive for the moving contact in the arc extinguishing chamber. A retaining block and a repulsive force disk are both fixedly sleeved on the rigid connecting rod. A permanent magnet holding module is provided to provide an upward suction force to the retaining block, so as to realize providing a closing holding force for the retaining block and the rigid connecting rod through the magnetic force of the permanent magnet holding module. A static opening coil is energized to provide a downward repulsive force to the repulsive force disk, and the repulsive force disk cooperates with the static opening coil to generate an opening repulsive force for moving the rigid connecting rod downward. A static closing coil is energized to provide an upward repulsive force to the repulsive force disk, and the repulsive force disk cooperates with the static closing coil to generate a closing repulsive force for moving the rigid connecting rod upward. A dynamic power module is energized to provide a downward repulsive force or an upward repulsive force to the repulsive force disk to provide a travel force for rapid opening or closing. During the process of the ultra-high voltage circuit breaker changing from the closing state to the opening state, when it is necessary to make the rigid connecting rod move downward rapidly for rapid opening, on the basis of the static opening coil being energized to provide a downward repulsive force to the repulsive force disk, the dynamic power module is energized to provide a downward repulsive force to the repulsive force disk to accelerate the downward movement speed of the rigid connecting rod, solving the problem of the speed decline in the middle and late stages of the long-stroke opening movement of the ultra-high voltage circuit breaker. When the rigid connecting rod moves downward to the end stage of the stroke, the dynamic power module is energized to provide an upward repulsive force to the repulsive force disk, which can effectively decelerate the rigid connecting rod; during the process of the ultra-high voltage circuit breaker changing from the opening state to the closing state, on the basis of the static closing coil being energized to provide an upward repulsive force to the repulsive force disk, the dynamic power module is energized to provide an upward repulsive force to the repulsive force disk to accelerate the upward movement speed of the rigid connecting rod. When the rigid connecting rod moves upward to the end stage of the stroke, the dynamic power module is energized to provide a downward repulsive force to the repulsive force disk, which can effectively decelerate the rigid connecting rod, effectively reducing the problem of closing bounce of the ultra-high voltage circuit breaker, reducing the ablation of the moving contact and the static contact, and realizing the controllability of the movement speed of the rigid connecting rod. The operating mechanism of the ultra-high voltage circuit breaker provided by the present invention has a compact structure, and the opening and closing actions are fast and stable, with excellent reliability and service life, meeting the rapid operation requirements of the ultra-high voltage circuit breaker, helping to improve the opening and closing performance of the ultra-high voltage circuit breaker, meeting the requirements of the power grid for high reliability and rapid operation, and providing an important support for the technical upgrading of high-voltage power equipment. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1Schematic diagram of the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention; Figure 2 Closing schematic diagram of the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention; Figure 3 Opening schematic diagram of the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention; Figure 4 Schematic diagram of the static coil power supply unit in the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention; Figure 5 Schematic diagram of the power supply module in the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention; In the figure: 1 - rigid connecting rod, 2 - permanent magnet holding module, 3 - holding block, 4 - static opening coil, 5 - static closing coil, 6 - repulsive disk, 7 - dynamic power module, 8 - spring holding module, 9 - spring holding unit housing, 10 - connecting block, 11 - first compression spring, 12 - spring middle rod, 13 - spring base, 14 - limiting block, 15 - buffer module, 16 - oil buffer, 17 - bottom fixing block, 18 - second compression spring, 19 - fixed insulating rod, 20 - magnetic holding device housing, 21 - permanent magnet, 22 - power coil disk, 23 - coil drive power supply, 24 - first capacitor, 25 - second capacitor, 26 - first freewheeling diode, 27 - second freewheeling diode, 28 - first power transistor, 29 - second power transistor, 30 - third power transistor, 31 - fourth power transistor, 32 - first output terminal, 33 - second output terminal, 34 - third output terminal, 35 - fourth output terminal, 36 - third capacitor, 37 - fourth capacitor, 38 - third freewheeling diode, 39 - fourth freewheeling diode, 40 - fifth power transistor, 41 - sixth power transistor, 42 - seventh power transistor, 43 - eighth power transistor, 44 - fifth output terminal, 45 - sixth output terminal. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The object of the present invention is to provide an operating mechanism for an ultra-high voltage circuit breaker to solve the problems existing in the above-mentioned prior art. It has a compact structure, fast and stable opening and closing actions, excellent reliability and service life, and meets the fast operation requirements of ultra-high voltage circuit breakers.

[0020] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] As Figures 1 to 5 shown, the present invention provides a super high voltage circuit breaker operating mechanism, including a rigid link 1, a permanent magnet holding module 2, a holding block 3, a static opening coil 4, a static closing coil 5, a repulsive disk 6, and a dynamic power module 7; the rigid link 1 can move upward or downward, and the top of the rigid link 1 is used for driving connection with the moving contact in the arc extinguishing chamber. The permanent magnet holding module 2, the static opening coil 4, and the static closing coil 5 are fixedly arranged in sequence from top to bottom. The permanent magnet holding module 2, the static opening coil 4, and the static closing coil 5 are sleeved outside the rigid link 1. Both the holding block 3 and the repulsive disk 6 are fixedly sleeved on the rigid link 1. The holding block 3 is placed in the first moving channel between the permanent magnet holding module 2 and the static opening coil 4, and the repulsive disk 6 is placed in the second moving channel between the static opening coil 4 and the static closing coil 5. The dynamic power module 7 is fixedly sleeved outside the second moving channel; the permanent magnet holding module 2 can provide an upward suction force to the holding block 3; when the static opening coil 4 is energized, it can provide a downward repulsive force to the repulsive disk 6; when the static closing coil 5 is energized, it can provide an upward repulsive force to the repulsive disk 6; when the dynamic power module 7 is energized, it can provide a downward repulsive force or an upward repulsive force to the repulsive disk 6.

[0022] The operating mechanism of the ultra-high voltage circuit breaker provided by the present invention is provided with the top end of the rigid connecting rod 1 for driving connection with the moving contact in the arc extinguishing chamber. The upward movement of the rigid connecting rod 1 provides closing drive for the moving contact in the arc extinguishing chamber, and the downward movement of the rigid connecting rod 1 provides opening drive for the moving contact in the arc extinguishing chamber. The holding block 3 and the repulsive force disk 6 are both fixedly sleeved on the rigid connecting rod 1. The permanent magnet holding module 2 is provided to provide an upward suction force to the holding block 3, so as to realize providing a closing holding force for the holding block 3 and the rigid connecting rod 1 through the magnetic force of the permanent magnet holding module 2. The static opening coil 4 is energized to provide a downward repulsive force to the repulsive force disk 6, and the repulsive force disk 6 cooperates with the static opening coil 4 to generate an opening repulsive force for moving the rigid connecting rod 1 downward. The static closing coil 5 is energized to provide an upward repulsive force to the repulsive force disk 6, and the repulsive force disk 6 cooperates with the static closing coil 5 to generate a closing repulsive force for moving the rigid connecting rod 1 upward. The dynamic power module 7 is energized to provide a downward repulsive force or an upward repulsive force to the repulsive force disk 6, providing a travel force for rapid opening or closing. During the process of the ultra-high voltage circuit breaker changing from the closing state to the opening state, when it is necessary to make the rigid connecting rod 1 move downward quickly for rapid opening, on the basis of the static opening coil 4 being energized to provide a downward repulsive force to the repulsive force disk 6, the dynamic power module 7 is energized to provide a downward repulsive force to the repulsive force disk 6, accelerating the downward movement speed of the rigid connecting rod 1, and solving the problem of the speed decline in the middle and later stages of the long-stroke opening movement of the ultra-high voltage circuit breaker. When the rigid connecting rod 1 moves downward to the end stage of the stroke, the dynamic power module 7 is energized to provide an upward repulsive force to the repulsive force disk 6, which can effectively decelerate the rigid connecting rod 1; during the process of the ultra-high voltage circuit breaker changing from the opening state to the closing state, on the basis of the static closing coil 5 being energized to provide an upward repulsive force to the repulsive force disk 6, the dynamic power module 7 is energized to provide an upward repulsive force to the repulsive force disk 6, accelerating the upward movement speed of the rigid connecting rod 1. When the rigid connecting rod 1 moves upward to the end stage of the stroke, the dynamic power module 7 is energized to provide a downward repulsive force to the repulsive force disk 6, which can effectively decelerate the rigid connecting rod 1, effectively reducing the problem of closing bounce of the ultra-high voltage circuit breaker, reducing the ablation of the moving contact and the static contact, and realizing the controllability of the movement speed of the rigid connecting rod. The operating mechanism of the ultra-high voltage circuit breaker provided by the present invention has a compact structure, and the opening and closing actions are fast and stable, with excellent reliability and service life, meeting the fast operation requirements of the ultra-high voltage circuit breaker, helping to improve the opening and closing performance of the ultra-high voltage circuit breaker, meeting the requirements of the power grid for high reliability and fast operation, and providing an important support for the technical upgrading of high-voltage power equipment.

[0023] As a relatively preferred implementation manner of this embodiment, both the static opening coil 4 and the static closing coil 5 include an epoxy resin shell and a copper flat wire coil, and the copper flat wire coil is placed inside the epoxy resin shell; the repulsive force disk 6 is made of a high magnetic conductivity material, preferably an aluminum alloy material.

[0024] As a more preferred implementation manner of this embodiment, the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention further includes a displacement detection module. The displacement detection module preferably but is not limited to using a displacement detection sensor to effectively detect the displacement of the repulsion disk 6 or the holding block 3.

[0025] As a more preferred implementation manner of this embodiment, the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention further includes a spring holding module 8. The spring holding module 8 is placed below the static closing coil 5. The spring holding module 8 is sleeved outside the rigid connecting rod 1. The spring holding module 8 is connected to the rigid connecting rod 1. The spring holding module 8 can provide a downward elastic force or an upward elastic force to the rigid connecting rod 1. In the opening state, the spring holding module 8 provides a downward elastic force to the rigid connecting rod 1 to provide an auxiliary holding force for the opening of the rigid connecting rod 1. In the closing state, the spring holding module 8 provides an upward elastic force to the rigid connecting rod 1 to provide an auxiliary holding force for the closing of the rigid connecting rod 1, increasing the closing holding force and enabling it to withstand a larger short-circuit current, thereby improving the reliability and stability of opening and closing.

[0026] As a more preferred implementation manner of this embodiment, the spring holding module 8 includes a spring holding unit housing 9, a connecting block 10, a plurality of first compression springs 11, a plurality of spring middle rods 12, and a plurality of spring bases 13. The spring holding unit housing 9 is fixedly placed below the static closing coil 5. The spring holding unit housing 9 is sleeved outside the rigid connecting rod 1. The connecting block 10, the first compression springs 11, the spring middle rods 12, and the spring bases 13 are all placed inside the spring holding unit housing 9. The connecting block 10 is fixedly sleeved on the rigid connecting rod 1. The number of the first compression springs 11, the number of the spring middle rods 12, and the number of the spring bases 13 are equal. The first compression springs 11, the spring middle rods 12, and the spring bases 13 correspond one by one. The first compression springs 11, the spring middle rods 12, and the spring bases 13 are all arranged around the rigid connecting rod 1 and are arranged in a circumferential array around the rigid connecting rod 1. The spring bases 13 are fixedly arranged on the inner side wall of the spring holding unit housing 9. The first compression springs 11 are sleeved on the spring middle rods 12. The spring middle rods 12 are elastic. One end of the spring middle rod 12 and one end of the first compression spring 11 are both connected to the spring base 13. The other end of the spring middle rod 12 and the other end of the first compression spring 11 are both connected to the connecting block 10. It has strong stability and adaptability and can effectively improve the stability when the rigid connecting rod 1 moves upward or downward. The first compression spring 11 can provide a downward elastic force or an upward elastic force to the rigid connecting rod 1. The spring holding module 8 further includes a limiting block 14. The limiting block 14 is fixedly sleeved on the bottom end of the rigid connecting rod 1. A through hole is opened at the bottom of the spring holding unit housing 9, and the through hole can block the passing of the limiting block 14 to effectively limit the movement of the rigid connecting rod 1.

[0027] As a relatively preferred embodiment of this embodiment, the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention further includes a buffer module 15. The buffer module 15 is disposed below the spring holding module 8. The buffer module 15 can contact the bottom end of the rigid link 1 and provide an upward buffer force to the rigid link 1, so as to decelerate and buffer the downward movement of the rigid link 1, reduce the impact of the rigid link 1, and thus improve the reliability and stability during fast opening.

[0028] As a relatively preferred embodiment of this embodiment, the buffer module 15 includes an oil buffer 16 and a bottom fixing block 17. The bottom fixing block 17 is fixedly disposed below the spring holding module 8. The oil buffer 16 is disposed on the bottom fixing block 17. The top end of the oil buffer 16 can contact the bottom end of the rigid link 1. The oil buffer 16 can provide an upward buffer force to the rigid link 1 to effectively provide an opening buffer force, with a simple structure and being convenient for manufacturing and use.

[0029] As a relatively preferred embodiment of this embodiment, the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention further includes a second compression spring 18. The second compression spring 18 is disposed between the holding block 3 and the static opening coil 4. The second compression spring 18 is sleeved outside the rigid link 1. The second compression spring 18 can provide an upward elastic force to the holding block 3, and can effectively increase the closing holding force and improve the stability of the closing state.

[0030] As a relatively preferred embodiment of this embodiment, the operating mechanism of the ultra-high voltage circuit breaker provided by the present invention further includes a plurality of fixed insulating rods 19. Each fixed insulating rod 19 is arranged around the rigid link 1. The permanent magnet holding module 2, the static opening coil 4, the dynamic power module 7, and the static closing coil 5 are all fixedly connected to the fixed insulating rod 19, with a simple structure and being convenient for manufacturing and use. In this embodiment, the lower end of the fixed insulating rod 19 is fixedly connected to the spring holding module 8; the permanent magnet holding module 2 includes a magnetic holding device housing 20 and a plurality of permanent magnets 21. A plurality of annular grooves are formed on the magnetic holding device housing 20. The number of annular grooves is equal to the number of permanent magnets 21. The annular grooves correspond to the permanent magnets 21 one by one. The permanent magnets 21 are fixedly disposed in the annular grooves. The number of permanent magnets 21 can be determined according to the actual required closing holding force. In this embodiment, the magnetic holding device housing 20 is made of a metal magnetic conductive material.

[0031] As a relatively preferred embodiment of this embodiment, the dynamic power module 7 includes a plurality of power coil discs 22, and each power coil disc 22 is fixedly sleeved outside the second moving channel in sequence from top to bottom. When the power coil disc 22 is energized, it can provide a downward repulsive force or an upward repulsive force to the repulsive disc 6. The number and spacing of the power coil discs 22 can be determined in combination with the actual required stroke of the repulsive disc 6. As a relatively preferred embodiment of this embodiment, the spacing between any two adjacent power coil discs 22 is equal. As a relatively preferred embodiment of this embodiment, the power coil disc 22 includes an epoxy resin shell and a copper flat wire coil, and the copper flat wire coil is placed inside the epoxy resin shell.

[0032] As a relatively preferred embodiment of this embodiment, the ultra-high voltage circuit breaker operating mechanism provided by the present invention further includes a coil driving power supply 23. The coil driving power supply 23 includes a static coil power supply unit and a power coil disc power supply unit. The static coil power supply unit is electrically connected to the static opening coil 4 and the static closing coil 5. The static coil power supply unit can supply power to the static opening coil 4 and the static closing coil 5. The power coil disc power supply unit includes a plurality of power supply modules. The number of power supply modules is equal to the number of power coil discs 22. The power supply modules correspond to the power coil discs 22 one by one. The power supply modules are electrically connected to the power coil discs 22. The power supply modules can supply power to the power coil discs 22. The static coil power supply unit provides independent power support for the static opening coil 4 and the static closing coil 5, and the power supply modules provide independent power support for the power coil discs 22. The opening, closing or deceleration operations are realized by controlling the current.

[0033] As a relatively preferred embodiment of this embodiment, the static coil power supply unit includes a first capacitor 24, a second capacitor 25, a first freewheeling diode 26, a second freewheeling diode 27, a first power transistor 28, a second power transistor 29, a third power transistor 30, a fourth power transistor 31, a first output terminal 32, a second output terminal 33, a third output terminal 34 and a fourth output terminal 35. The positive electrode of the first capacitor 24, the negative electrode of the first freewheeling diode 26 and one end of the first power transistor 28 are electrically connected. The other end of the first power transistor 28 is electrically connected to the first output terminal 32. The negative electrode of the first capacitor 24, the positive electrode of the first freewheeling diode 26 and one end of the second power transistor 29 are electrically connected. The other end of the second power transistor 29 is electrically connected to the second output terminal 33. The negative electrode of the second capacitor 25 is electrically connected to the negative electrode of the first capacitor 24. The positive electrode of the second capacitor 25, the negative electrode of the second freewheeling diode 27 and one end of the third power transistor 30 are electrically connected. The other end of the third power transistor 30 is electrically connected to the third output terminal 34. The negative electrode of the second capacitor 25, the positive electrode of the second freewheeling diode 27 and one end of the fourth power transistor 31 are electrically connected. The other end of the fourth power transistor 31 is electrically connected to the fourth output terminal 35. The power supply module includes a third capacitor 36, a fourth capacitor 37, a third freewheeling diode 38, a fourth freewheeling diode 39, a fifth power transistor 40, a sixth power transistor 41, a seventh power transistor 42, an eighth power transistor 43, a fifth output terminal 44 and a sixth output terminal 45. The positive electrode of the third capacitor 36, the negative electrode of the third freewheeling diode 38 and one end of the fifth power transistor 40 are electrically connected. The other end of the fifth power transistor 40 is electrically connected to the fifth output terminal 44. The negative electrode of the third capacitor 36, the positive electrode of the third freewheeling diode 38 and one end of the sixth power transistor 41 are electrically connected. The other end of the sixth power transistor 41 is electrically connected to the fifth output terminal 44. The negative electrode of the fourth capacitor 37 is electrically connected to the negative electrode of the third capacitor 36. The positive electrode of the fourth capacitor 37, the negative electrode of the fourth freewheeling diode 39 and one end of the seventh power transistor 42 are electrically connected. The other end of the seventh power transistor 42 is electrically connected to the sixth output terminal 45. The negative electrode of the fourth capacitor 37, the positive electrode of the fourth freewheeling diode 39 and one end of the eighth power transistor 43 are electrically connected. The other end of the eighth power transistor 43 is electrically connected to the sixth output terminal 45. The first output terminal 32 and the third output terminal 34 are electrically connected to the static opening coil 4. The second output terminal 33 and the fourth output terminal 35 are electrically connected to the static closing coil 5. The fifth output terminal 44 and the sixth output terminal 45 are electrically connected to the power coil disc 22. The structure is simple and convenient for manufacturing and use.

[0034] It should be noted here that the above-mentioned "electrical connection" is preferably achieved by wire connection.

[0035] As a relatively preferred embodiment of this embodiment, during the process of the ultra-high voltage circuit breaker transitioning from the closing state to the opening state: In the closed state, the holding block 3 is in contact with the housing 20 of the magnetic holding device. At this time, the holding block 3 is subjected to an upward suction force from the permanent magnet 21; the second compression spring 18 is in a compressed state, and the elastic force is upward; the first compression spring 11 is in a compressed state, and all the first compression springs 11 as a whole are in an approximately triangular or conical state with the small head upward. The resultant spring force of all the first compression springs 11 is upward, that is, the closing holding force provided by the rigid link 1 for the moving contact in the arc extinguishing chamber at this time is the sum of the suction force of the permanent magnet 21, the elastic force of the second compression spring 18, and the resultant spring force of all the first compression springs 11; The repulsive disk 6 is in contact with the static opening coil 4. When opening, the first power transistor 28 and the third power transistor 30 are closed; The first capacitor 24 discharges to the static opening coil 4. The static opening coil 4 generates a magnetic field change, generating a downward repulsive force on the repulsive disk 6. When the repulsive force is greater than the closing holding force, the repulsive disk 6 drives the rigid link 1 to move downward; Define the uppermost power coil disk 22 as the first power coil disk 22. Below the first power coil disk 22 are the second, third... the Nth, the N + 1th... in sequence; After the repulsive disk 6 passes the first power coil disk 22, the fifth power transistor 40 and the eighth power transistor 43 in the power supply module corresponding to the first power coil disk 22 are closed. The third capacitor 36 starts to discharge to the first power coil disk 22. The first power coil disk 22 generates a magnetic field change, continuing to generate a downward repulsive force on the repulsive disk 6, prompting the repulsive disk 6 to move downward rapidly; When the repulsive disk 6 passes the second power coil disk 22, the fifth power transistor 40 and the eighth power transistor 43 in the power supply module corresponding to the second power coil disk 22 are closed. The third capacitor 36 starts to discharge to the first power coil disk 22. The first power coil disk 22 generates a magnetic field change, continuing to generate a downward repulsive force on the repulsive disk 6, prompting the repulsive disk 6 to move downward rapidly; When the repulsive disk 6 passes the Nth power coil disk 22, the fifth power transistor 40 and the eighth power transistor 43 in the power supply module corresponding to the Nth power coil disk 22 are closed. The third capacitor 36 starts to discharge to the first power coil disk 22. The first power coil disk 22 generates a magnetic field change, continuing to generate a downward repulsive force on the repulsive disk 6, prompting the repulsive disk 6 to move downward rapidly until it approaches the opening position; During the rapid downward movement of the repulsive disk 6, too fast a speed will cause the limit block 14 to collide violently with the housing 9 of the spring holding unit and rebound. Therefore, when the repulsive disk 6 approaches the opening position, it is necessary to decelerate the repulsive disk 6; Perform a deceleration operation on the repulsive disk 6: When the repulsive disk 6 reaches above the (N + 1)-th power coil disk 22, the sixth power transistor 41 and the seventh power transistor 42 in the power supply module corresponding to the N-th power coil disk 22 are closed, and the fourth capacitor 37 starts to discharge to the (N + 1)-th power coil disk 22. The (N + 1)-th power coil disk 22 generates a magnetic field change, generating an upward repulsive force on the repulsive disk 6, prompting the repulsive disk 6 to decelerate; Among them, during the process of the repulsive disk 6 driving the rigid connecting rod 1 to move downward, the bottom end of the rigid connecting rod 1 will collide with the oil buffer 16, and the rigid connecting rod 1 receives an upward elastic force, prompting the repulsive disk 6 to decelerate and move downward to the closing position; When reaching the opening position, the repulsive disk 6 is preferably designed to fit with the static closing coil 5. All the first compression springs 11 are in a compressed state, and all the first compression springs 11 as a whole are in an approximately triangular or conical state with the small head downward. The resultant force of the spring forces of all the first compression springs 11 is downward, and the resultant force of the spring forces of all the first compression springs 11 is the opening holding force; The process from closing to opening ends.

[0036] The operating mechanism of the ultra-high voltage circuit breaker provided by the present invention combines permanent magnet holding technology, electromagnetic drive technology, and buffering technology, realizing efficient, fast, and precise control of the opening and closing actions of the circuit breaker. Through the innovative design of the coordinated operation of the dynamic power module 7, the permanent magnet holding module 2, and the spring holding module 8, the operating speed and stability of the mechanism are significantly improved; the use of multi-stage power coil disks 22 for driving and the design of the repulsive disk 6 overcome the bottleneck problem of limited stroke of the traditional mechanism; through the deceleration control of the buffer module 15 and the multi-stage power coil disks 22, the movement impact is effectively reduced, and the component life and operating reliability are improved.

[0037] Specific examples are applied in the present invention to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An ultra-high voltage circuit breaker operating mechanism, characterized in that: It comprises a rigid connecting rod, a permanent magnetic holding module, a holding block, a static opening coil, a static closing coil, a repulsion disk and a dynamic power module; the rigid connecting rod can move upward or downward, the top end of the rigid connecting rod is used for transmission connection with the moving contact in the arc extinguishing chamber, the permanent magnetic holding module, the static opening coil and the static closing coil are fixedly arranged in sequence from top to bottom, the permanent magnetic holding module, the static opening coil and the static closing coil are sleeved outside the rigid connecting rod, the holding block and the repulsion disk are fixedly sleeved on the rigid connecting rod, the holding block is placed in a first moving channel between the permanent magnetic holding module and the static opening coil, the repulsion disk is placed in a second moving channel between the static opening coil and the static closing coil, and the dynamic power module is fixedly sleeved outside the second moving channel; the permanent magnetic holding module can provide an upward suction force to the holding block; the static opening coil can provide a downward repulsion force to the repulsion disk when it is energized; the static closing coil can provide an upward repulsion force to the repulsion disk when it is energized; The dynamic power module can provide a downward repulsive force or an upward repulsive force to the repulsive disk when powered.

2. The ultra-high voltage circuit breaker operating mechanism according to claim 1, characterized in that: It also includes a spring holding module, which is placed below the static closing coil, sleeved outside the rigid connecting rod, connected to the rigid connecting rod, and capable of providing downward elastic force or upward elastic force to the rigid connecting rod.

3. The ultra-high voltage circuit breaker operating mechanism according to claim 2, characterized in that: The spring holding module includes a spring holding unit shell, a connecting block, a plurality of first compression springs, a plurality of spring middle rods and a plurality of spring bases. The spring holding unit shell is fixedly placed below the static closing coil, and the spring holding unit shell is sleeved outside the rigid connecting rod. The connecting block, the first compression spring, the spring middle rod and the spring base are all placed inside the spring holding unit shell. The connecting block is fixedly sleeved on the rigid connecting rod. The number of the first compression springs, the number of the spring middle rods and the number of the spring bases are equal. The first compression springs, the spring middle rods and the spring bases correspond to each other one by one. The first compression springs, the spring middle rods and the spring bases correspond to each other one by one. The spring bases are all arranged around the rigid connecting rod, and the spring bases are fixedly arranged on the inner side wall of the spring holding unit shell. The first compression spring is sleeved on the spring middle rod, and the spring middle rod is elastic. One end of the spring middle rod and one end of the first compression spring are both connected to the spring base, and the other end of the spring middle rod and the other end of the first compression spring are both connected to the connecting block; the first compression spring can provide downward elastic force or upward elastic force to the rigid connecting rod; the spring holding module also includes a limit block, which is fixedly sleeved on the bottom end of the rigid connecting rod, and a through hole is opened at the bottom of the spring holding unit shell, and the through hole can block the limit block from passing through.

4. The ultra-high voltage circuit breaker operating mechanism according to claim 2, characterized in that: The invention also comprises a buffer module, which is placed below the spring holding module and can contact the bottom end of the rigid link and provide an upward buffer force to the rigid link.

5. The ultra-high voltage circuit breaker operating mechanism according to claim 4, characterized in that: The buffer module includes an oil buffer and a bottom fixed block, wherein the bottom fixed block is fixedly placed below the spring retaining module, and the oil buffer is arranged on the bottom fixed block. The top end of the oil buffer can contact the bottom end of the rigid connecting rod, and the oil buffer can provide an upward buffering force to the rigid connecting rod.

6. The ultra-high voltage circuit breaker operating mechanism according to claim 1, characterized in that: It also includes a second compression spring, which is placed between the retaining block and the static opening coil, and is sleeved outside the rigid connecting rod. The second compression spring can provide an upward elastic force to the retaining block.

7. The ultra-high voltage circuit breaker operating mechanism according to claim 1, characterized in that: It also includes a plurality of fixed insulating rods, each of which is arranged around the rigid connecting rod, and the permanent magnetic holding module, the static opening coil, the dynamic power module and the static closing coil are all fixedly connected to the fixed insulating rods; the permanent magnetic holding module includes a magnetic holding device housing and a plurality of permanent magnets, and a plurality of annular grooves are opened on the magnetic holding device housing, the number of the annular grooves is equal to the number of the permanent magnets, the annular grooves correspond to the permanent magnets one by one, and the permanent magnets are fixed in the annular grooves.

8. The ultra-high voltage circuit breaker operating mechanism according to claim 1, characterized in that: The dynamic power module includes a plurality of power coil disks, each of which is fixedly sleeved outside the second moving channel in sequence from top to bottom. When the power coil disks are energized, they can provide downward repulsion or upward repulsion to the repulsion disk.

9. The ultra-high voltage circuit breaker operating mechanism according to claim 8, characterized in that: It also includes a coil driving power supply, which includes a static coil power supply unit and a power coil disk power supply unit. The static coil power supply unit is electrically connected to the static opening coil and the static closing coil, and the static coil power supply unit can supply power to the static opening coil and the static closing coil. The power coil disk power supply unit includes a plurality of power supply modules, the number of the power supply modules is equal to the number of the power coil disks, the power supply modules correspond to the power coil disks one by one, the power supply modules are electrically connected to the power coil disk, and the power supply modules can supply power to the power coil disk.

10. The ultra-high voltage circuit breaker operating mechanism according to claim 9, characterized in that: The static coil power supply unit includes a first capacitor, a second capacitor, a first freewheeling diode, a second freewheeling diode, a first power tube, a second power tube, a third power tube, a fourth power tube, a first output end, a second output end, a third output end and a fourth output end. The positive electrode of the first capacitor, the negative electrode of the first freewheeling diode and one end of the first power tube are electrically connected, and the other end of the first power tube is electrically connected to the first output end. The negative electrode of the first capacitor, the positive electrode of the first freewheeling diode and one end of the second power tube are electrically connected. The other end of the second power tube is electrically connected to the second output end. The negative electrode of the second capacitor is electrically connected to the negative electrode of the first capacitor. The positive electrode of the second capacitor, the negative electrode of the second freewheeling diode and one end of the third power tube are electrically connected. The other end of the third power tube is electrically connected to the third output end. The negative electrode of the second capacitor, the positive electrode of the second freewheeling diode and one end of the fourth power tube are electrically connected. The other end of the fourth power tube is electrically connected to the fourth output end. The power supply module includes a third capacitor, a fourth capacitor, a third freewheeling diode, a fourth freewheeling diode , a fifth power tube, a sixth power tube, a seventh power tube, an eighth power tube, a fifth output end and a sixth output end, the positive electrode of the third capacitor, the negative electrode of the third freewheeling diode and one end of the fifth power tube are electrically connected, the other end of the fifth power tube is electrically connected to the fifth output end, the negative electrode of the third capacitor, the positive electrode of the third freewheeling diode and one end of the sixth power tube are electrically connected, the other end of the sixth power tube is electrically connected to the fifth output end, the negative electrode of the fourth capacitor is electrically connected to the negative electrode of the third capacitor, the positive electrode of the fourth capacitor, The cathode of the fourth freewheeling diode and one end of the seventh power tube are electrically connected, and the other end of the seventh power tube is electrically connected to the sixth output end. The cathode of the fourth capacitor, the anode of the fourth freewheeling diode and one end of the eighth power tube are electrically connected, and the other end of the eighth power tube is electrically connected to the sixth output end. The first output end and the third output end are electrically connected to the static opening coil, the second output end and the fourth output end are electrically connected to the static closing coil, and the fifth output end and the sixth output end are electrically connected to the power coil disk.

Images