An ultra-high voltage circuit breaker operating mechanism

Abstract

The application discloses an ultra-high voltage circuit breaker operating mechanism and relates to the technical field of circuit breakers. The ultra-high voltage circuit breaker operating mechanism comprises a rigid connecting rod, a permanent magnet holding module, a holding block, a static opening coil, a static closing coil, a repulsion disc and a dynamic power module. The holding block and the repulsion disc are fixedly sleeved on the rigid connecting rod. The holding block is arranged in a first moving channel between the permanent magnet holding module and the static opening coil. The repulsion disc is arranged in a second moving channel between the static opening coil and the static closing coil. The dynamic power module is fixedly sleeved outside the second moving channel. The permanent magnet holding module can provide upward suction force to the holding block. The static opening coil can provide downward repulsion force to the repulsion disc after being electrified. The static closing coil can provide upward repulsion force to the repulsion disc after being electrified. The dynamic power module can provide downward repulsion force or upward repulsion force to the repulsion disc after being electrified. The application has the advantages of compact structure, fast and stable opening and closing actions, excellent reliability and service life and satisfaction of the fast operation requirement of the ultra-high voltage circuit breaker.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker, in particular to a kind of superhigh voltage circuit breaker operating mechanism. BACKGROUND

[0002] With the continuous expansion of the scale of power system and the improvement of power grid reliability, as a key component in power equipment, the breaking and closing performance of superhigh voltage circuit breaker is directly related to the safety and stability of power grid operation.

[0003] Traditional circuit breaker operating mechanism mainly relies on mechanical spring or hydraulic drive mode, these modes have the problems of slow action speed, complex structure, insufficient reliability and high maintenance cost in practical application. Especially in the scene needing fast action and multiple operations, traditional operating mechanism is difficult to meet the high frequency and high intensity use demand. In addition, due to the difficulty in realizing nonlinear control of energy release, the conventional operating mechanism may generate a large impact force in the running process, resulting in component wear and performance degradation. Therefore, the traditional circuit breaker operating mechanism is difficult to meet the technical development demand of superhigh voltage circuit breaker. SUMMARY

[0004] The purpose of the present application is to provide a kind of superhigh voltage circuit breaker operating mechanism, to solve the problems existing in the prior art, compact structure, breaking and closing action is fast and smooth, with excellent reliability and life, meet the fast operation demand of superhigh voltage circuit breaker.

[0005] To achieve the above purpose, the present application provides the following scheme:

[0006] The present application provides a kind of superhigh voltage circuit breaker operating mechanism, including rigid connecting rod, permanent magnet holding module, holding block, static breaking coil, static closing coil, repulsion disc and dynamic power module;The rigid connecting rod can move upwards or downwards, the top end of the rigid connecting rod is used to be transmission connection with the moving contact in arc-extinguishing chamber, the permanent magnet holding module, the static breaking coil and the static closing coil are sequentially fixed from top to bottom, the permanent magnet holding module, the static breaking coil and the static closing coil are set on the rigid connecting rod, the holding block and the repulsion disc are all fixedly set on the rigid connecting rod, the holding block is placed in the first moving channel between the permanent magnet holding module and the static breaking coil, the repulsion disc is placed in the second moving channel between the static breaking coil and the static closing coil, the dynamic power module is fixedly set outside the second moving channel;The permanent magnet holding module can provide upward suction force to the holding block;The static breaking coil energization can provide downward repulsion to the repulsion disc;The static closing coil energization can provide upward repulsion to the repulsion disc;The dynamic power module energization can provide downward repulsion or upward repulsion to the repulsion disc.

[0007] Preferably, a spring retaining module is arranged below the static closing coil, the spring retaining module is sleeved outside the rigid connecting rod, the spring retaining module is connected with the rigid connecting rod, and the spring retaining module can provide downward or upward elastic force to the rigid connecting rod.

[0008] Preferably, the spring retaining module comprises a spring retaining 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 retaining unit shell is fixedly arranged below the static closing coil, the spring retaining unit shell is sleeved outside the rigid connecting rod, the connecting block, the first compression springs, the spring middle rods and the spring bases are arranged inside the spring retaining 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, the first compression springs, the spring middle rods and the spring bases are arranged around the rigid connecting rod, the spring bases are fixedly arranged on the inner side wall of the spring retaining unit shell, the first compression springs are sleeved on the spring middle rods, the spring middle rods are elastic, one end of the spring middle rods and one end of the first compression springs are connected with the spring bases, the other end of the spring middle rods and the other end of the first compression springs are connected with the connecting block, the first compression springs can provide downward or upward elastic force to the rigid connecting rod, the spring retaining module further comprises a limiting block, the limiting block is fixedly sleeved on the bottom end of the rigid connecting rod, and the bottom of the spring retaining unit shell is provided with a through hole capable of blocking the limiting block.

[0009] Preferably, a buffer module is arranged below the spring retaining module, the buffer module can contact the bottom end of the rigid connecting rod and provide upward buffer force to the rigid connecting rod.

[0010] Preferably, the buffer module comprises an oil buffer and a bottom fixing block, the bottom fixing block is fixedly arranged below the spring retaining module, the oil buffer is arranged on the bottom fixing block, the top end of the oil buffer can contact the bottom end of the rigid connecting rod, and the oil buffer can provide upward buffer force to the rigid connecting rod.

[0011] Preferably, a second compression spring is arranged between the retaining block and the static opening coil, the second compression spring is sleeved outside the rigid connecting rod, and the second compression spring can provide upward elastic force to the retaining block.

[0012] Preferably, a plurality of fixed insulation rods are further included, each of the fixed insulation rods 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 fixedly connected with the fixed insulation rods; the permanent magnetic holding module comprises a magnetic holding device shell and a plurality of permanent magnets, a plurality of annular grooves are formed in the magnetic holding device shell, 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.

[0013] Preferably, the dynamic power module comprises a plurality of power coil discs, each of the power coil discs is fixedly sleeved on the second moving channel from top to bottom in sequence, and the power coil discs can provide downward repulsion or upward repulsion to the repulsion disc when energized.

[0014] Preferably, a coil driving power supply is further included, the coil driving power supply comprises a static coil power supply unit and a power coil disc power supply unit, the static coil power supply unit is electrically connected with 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 comprises 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 with the power coil discs, and the power supply modules can supply power to the power coil discs.

[0015] Preferably, the static coil power supply unit comprises 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 pole of the first capacitor, the negative pole of the first freewheeling diode and one end of the first power tube are electrically connected, the other end of the first power tube is electrically connected with the first output end, the negative pole of the first capacitor, the positive pole 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 with the second output end, the negative pole of the second capacitor is electrically connected with the negative pole of the first capacitor, the positive pole of the second capacitor, the negative pole 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 with the third output end, the negative pole of the second capacitor, the positive pole 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 with the fourth output end; the power supply module comprises 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 pole of the third capacitor, the negative pole 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 with the fifth output end, the negative pole of the third capacitor, the positive pole 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 with the fifth output end, the negative pole of the fourth capacitor is electrically connected with the negative pole of the third capacitor, the positive pole of the fourth capacitor, the negative pole of the fourth freewheeling diode and one end of the seventh power tube are electrically connected, the other end of the seventh power tube is electrically connected with the sixth output end, the negative pole of the fourth capacitor, the positive pole of the fourth freewheeling diode and one end of the eighth power tube are electrically connected, the other end of the eighth power tube is electrically connected with the sixth output end; the first output end and the third output end are electrically connected with the static braking coil, the second output end and the fourth output end are electrically connected with the static closing coil, and the fifth output end and the sixth output end are electrically connected with the dynamic coil disc.

[0016] The present application has the following technical effects relative to the prior art:

[0017] The operating mechanism of the ultra-high voltage circuit breaker provided by the application is characterized in that: the top end of the rigid connecting rod is arranged to be in transmission connection with the movable contact in the arc extinguishing chamber, the upward movement of the rigid connecting rod provides closing driving for the movable contact in the arc extinguishing chamber, the downward movement of the rigid connecting rod provides opening driving for the movable contact in the arc extinguishing chamber, the retaining block and the repulsion disc are both fixedly sleeved on the rigid connecting rod, the permanent magnet retaining module provides upward suction force to the retaining block, the magnetic force of the permanent magnet retaining module provides closing retaining force for the retaining block and the rigid connecting rod, the static opening coil is arranged to provide downward repulsion to the repulsion disc, the repulsion disc and the static opening coil cooperate to generate opening repulsion for moving the rigid connecting rod downward, the static closing coil is arranged to provide upward repulsion to the repulsion disc, the repulsion disc and the static closing coil cooperate to generate closing repulsion for moving the rigid connecting rod upward, the dynamic power module is arranged to provide downward repulsion or upward repulsion to the repulsion disc, thereby providing stroke force for fast opening or closing, in the process of changing the ultra-high voltage circuit breaker from the closing state to the opening state, the rigid connecting rod needs to be quickly moved downward for fast opening, on the basis of the static opening coil providing downward repulsion to the repulsion disc, the dynamic power module is arranged to provide downward repulsion to the repulsion disc, thereby accelerating the downward movement speed of the rigid connecting rod, thereby solving the problem of speed reduction in the later stage of the long-stroke opening movement of the ultra-high voltage circuit breaker, when the rigid connecting rod is moved downward to the end stage of the stroke, the dynamic power module is arranged to provide upward repulsion to the repulsion disc, thereby effectively slowing down the rigid connecting rod; in the process of changing the ultra-high voltage circuit breaker from the opening state to the closing state, on the basis of the static closing coil providing upward repulsion to the repulsion disc, the dynamic power module is arranged to provide upward repulsion to the repulsion disc, thereby accelerating the upward movement speed of the rigid connecting rod, when the rigid connecting rod is moved upward to the end stage of the stroke, the dynamic power module is arranged to provide downward repulsion to the repulsion disc, thereby effectively slowing down the rigid connecting rod, thereby effectively reducing the closing bounce problem of the ultra-high voltage circuit breaker, reducing the ablation of the movable 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 application is compact in structure, fast and stable in opening and closing actions, has excellent reliability and service life, meets the fast operation requirement of the ultra-high voltage circuit breaker, helps to improve the opening and closing performance of the ultra-high voltage circuit breaker, meets the requirement of the power grid for high reliability and fast operation, and provides important support for the technical upgrading of high-voltage power equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0019] Figure 1The schematic diagram of the operating mechanism of the ultra-high voltage circuit breaker provided by the present application is shown in the figure;

[0020] Figure 2 The closing schematic diagram of the operating mechanism of the ultra-high voltage circuit breaker provided by the present application is shown in the figure;

[0021] Figure 3 The opening schematic diagram of the operating mechanism of the ultra-high voltage circuit breaker provided by the present application is shown in the figure;

[0022] Figure 4 The schematic diagram of the static coil power supply unit in the operating mechanism of the ultra-high voltage circuit breaker provided by the present application is shown in the figure;

[0023] Figure 5 The schematic diagram of the power supply module in the operating mechanism of the ultra-high voltage circuit breaker provided by the present application is shown in the figure;

[0024] In the figure: 1-rigid connecting rod, 2-permanent magnet retaining module, 3-retaining block, 4-static opening coil, 5-static closing coil, 6-repulsion disc, 7-dynamic power module, 8-spring retaining module, 9-spring retaining 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 retaining device housing, 21-permanent magnet, 22-power coil disc, 23-coil driving power supply, 24-first capacitor, 25-second capacitor, 26-first freewheeling diode, 27-second freewheeling diode, 28-first power tube, 29-second power tube, 30-third power tube, 31-fourth power tube, 32-first output end, 33-second output end, 34-third output end, 35-fourth output end, 36-third capacitor, 37-fourth capacitor, 38-third freewheeling diode, 39-fourth freewheeling diode, 40-fifth power tube, 41-sixth power tube, 42-seventh power tube, 43-eighth power tube, 44-fifth output end, 45-sixth output end. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0026] The present application aims to provide an operating mechanism of an ultra-high voltage circuit breaker to solve the problems in the prior art, which is compact in structure, fast and smooth in opening and closing actions, has excellent reliability and service life, and meets the fast operation requirements of the ultra-high voltage circuit breaker.

[0027] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0028] As shown in Figures 1 to 5 The present application provides an ultra-high voltage circuit breaker operating mechanism, comprising a rigid connecting rod 1, a permanent magnet holding module 2, a holding block 3, a static opening coil 4, a static closing coil 5, a repulsion disc 6 and a dynamic power module 7; the rigid connecting rod 1 can move upward or downward, the top end of the rigid connecting rod 1 is used for transmission connection with a moving contact in an arc extinguishing chamber, the permanent magnet holding module 2, the static opening coil 4 and the static closing coil 5 are sequentially fixed 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 connecting rod 1, the holding block 3 and the repulsion disc 6 are both fixedly sleeved on the rigid connecting rod 1, the holding block 3 is arranged in a first moving channel between the permanent magnet holding module 2 and the static opening coil 4, the repulsion disc 6 is arranged in a second moving channel between the static opening coil 4 and the static closing coil 5, and the dynamic power module 7 is fixedly sleeved outside the second moving channel; the permanent magnet holding module 2 can provide upward suction force to the holding block 3; the static opening coil 4 can provide downward repulsion to the repulsion disc 6 after being electrified; the static closing coil 5 can provide upward repulsion to the repulsion disc 6 after being electrified; and the dynamic power module 7 can provide downward repulsion or upward repulsion to the repulsion disc 6 after being electrified.

[0029] The operating mechanism of the ultra-high voltage circuit breaker provided by the application is characterized in that: the top end of the rigid connecting rod 1 is arranged to be in transmission connection with the movable contact in the arc extinguishing chamber, the upward movement of the rigid connecting rod 1 provides closing driving for the movable contact in the arc extinguishing chamber, the downward movement of the rigid connecting rod 1 provides opening driving for the movable contact in the arc extinguishing chamber, the retaining block 3 and the repulsion disc 6 are both fixedly sleeved on the rigid connecting rod 1, the permanent magnet retaining module 2 provides upward suction force to the retaining block 3, the magnetic force of the permanent magnet retaining module 2 provides closing retaining force for the retaining block 3 and the rigid connecting rod 1, the static opening coil 4 is arranged to provide downward repulsion force to the repulsion disc 6 when energized, the repulsion disc 6 cooperates with the static opening coil 4 to generate opening repulsion force for moving the rigid connecting rod 1 downward, the static closing coil 5 is arranged to provide upward repulsion force to the repulsion disc 6 when energized, the repulsion disc 6 cooperates with the static closing coil 5 to generate closing repulsion force for moving the rigid connecting rod 1 upward, and the dynamic power module 7 is arranged to provide downward repulsion force or upward repulsion force to the repulsion disc 6 when energized, thereby providing stroke force for rapid opening or closing. In the process of changing the ultra-high voltage circuit breaker from the closing state to the opening state, the rigid connecting rod 1 needs to be quickly moved downward for rapid opening. On the basis of the static opening coil 4 providing downward repulsion force to the repulsion disc 6 when energized, the dynamic power module 7 is energized to provide downward repulsion force to the repulsion disc 6, thereby accelerating the downward movement of the rigid connecting rod 1, and solving the problem of speed reduction in the later stage of the long-stroke opening movement of the ultra-high voltage circuit breaker. When the rigid connecting rod 1 moves downward to the end of the stroke, the dynamic power module 7 is energized to provide upward repulsion force to the repulsion disc 6, thereby effectively slowing down the rigid connecting rod 1. In the process of changing the ultra-high voltage circuit breaker from the opening state to the closing state, on the basis of the static closing coil 5 providing upward repulsion force to the repulsion disc 6 when energized, the dynamic power module 7 is energized to provide upward repulsion force to the repulsion disc 6, thereby accelerating the upward movement of the rigid connecting rod 1. When the rigid connecting rod 1 moves upward to the end of the stroke, the dynamic power module 7 is energized to provide downward repulsion force to the repulsion disc 6, thereby effectively slowing down the rigid connecting rod 1, effectively reducing the closing bounce problem of the ultra-high voltage circuit breaker, reducing the ablation of the movable contact and the static contact, realizing the controllability of the movement speed of the rigid connecting rod, and providing the operating mechanism of the ultra-high voltage circuit breaker with compact structure, rapid and smooth opening and closing actions, excellent reliability and service life, rapid operation requirements of the ultra-high voltage circuit breaker, improved opening and closing performance of the ultra-high voltage circuit breaker, and high reliability and rapid operation requirements of the power grid, thereby providing important support for the technical upgrading of high-voltage power equipment.

[0030] As a more preferred embodiment of the present embodiment, the static opening coil 4 and the static closing coil 5 both include an epoxy resin shell and a copper flat wire coil, and the copper flat wire coil is arranged inside the epoxy resin shell; the repulsion disc 6 is made of high-permeability material, preferably aluminum alloy material.

[0031] As a more preferred embodiment of the present embodiment, the operating mechanism of the ultra-high voltage circuit breaker further comprises a displacement detection module, which preferably but not limitedly adopts a displacement detection sensor to effectively detect the displacement of the repulsion disc 6 or the retaining block 3.

[0032] As a more preferred embodiment of the present embodiment, the operating mechanism of the ultra-high voltage circuit breaker further comprises a spring retaining module 8, which is arranged below the static closing coil 5, is sleeved on the rigid connecting rod 1, is connected with the rigid connecting rod 1, and can provide the rigid connecting rod 1 with downward or upward elastic force. In the open state, the spring retaining module 8 provides the rigid connecting rod 1 with downward elastic force to provide the rigid connecting rod 1 with auxiliary holding force for opening. In the closed state, the spring retaining module 8 provides the rigid connecting rod 1 with upward elastic force to provide the rigid connecting rod 1 with auxiliary holding force for closing, thereby increasing the closing holding force, being able to withstand greater short-circuit current, and thus improving the reliability and stability of opening and closing.

[0033] As a more preferred embodiment of the present embodiment, the spring retaining module 8 comprises a spring retaining 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 retaining unit housing 9 is fixedly arranged below the static closing coil 5 and is sleeved on 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 arranged inside the spring retaining 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 to each other. The first compression springs 11, the spring middle rods 12, and the spring bases 13 are all arranged around the rigid connecting rod 1 in a circumferential array. The spring bases 13 are fixedly arranged on the inner side wall of the spring retaining 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 rods 12 and one end of the first compression springs 11 are both connected with the spring bases 13. The other end of the spring middle rods 12 and the other end of the first compression springs 11 are both connected with the connecting block 10. The stability and adaptability are strong, and the stability of the rigid connecting rod 1 when moving upward or downward can be effectively improved. The first compression springs 11 can provide the rigid connecting rod 1 with downward or upward elastic force. The spring retaining module 8 further comprises a limiting block 14, which is fixedly sleeved on the bottom end of the rigid connecting rod 1. The bottom of the spring retaining unit housing 9 is provided with a through hole, which can block the limiting block 14 to effectively limit the movement of the rigid connecting rod 1.

[0034] As a more preferred embodiment of the present application, the operating mechanism of the ultra-high voltage circuit breaker further comprises a buffer module 15, which is arranged below the spring retaining module 8, and can contact the bottom end of the rigid connecting rod 1 and provide an upward buffer force to the rigid connecting rod 1, so as to slow down and buffer the downward movement of the rigid connecting rod 1 and reduce the impact of the rigid connecting rod 1, thereby improving the reliability and stability during the rapid opening.

[0035] As a more preferred embodiment of the present application, the buffer module 15 comprises an oil buffer 16 and a bottom fixing block 17, the bottom fixing block 17 is fixed below the spring retaining module 8, and the oil buffer 16 is arranged on the bottom fixing block 17, the top end of the oil buffer 16 can contact the bottom end of the rigid connecting rod 1, and the oil buffer 16 can provide an upward buffer force to the rigid connecting rod 1, so as to effectively provide an opening buffer force, and the structure is simple and convenient to manufacture and use.

[0036] As a more preferred embodiment of the present application, the operating mechanism of the ultra-high voltage circuit breaker further comprises a second compression spring 18, which is arranged between the retaining block 3 and the static opening coil 4, and is sleeved on the rigid connecting rod 1, the second compression spring 18 can provide an upward elastic force to the retaining block 3, so as to effectively increase the closing retaining force and improve the stability of the closing state.

[0037] As a more preferred embodiment of the present application, the operating mechanism of the ultra-high voltage circuit breaker further comprises a plurality of fixed insulation rods 19, each fixed insulation rod 19 is arranged around the rigid connecting rod 1, and the permanent magnet retaining module 2, the static opening coil 4, the dynamic power module 7 and the static closing coil 5 are fixedly connected with the fixed insulation rod 19, the structure is simple and convenient to manufacture and use, in the present embodiment, the lower end of the fixed insulation rod 19 is fixedly connected with the spring retaining module 8; the permanent magnet retaining module 2 comprises a magnetic retaining device housing 20 and a plurality of permanent magnets 21, a plurality of annular grooves are formed in the magnetic retaining device housing 20, the number of the annular grooves is equal to the number of the permanent magnets 21, the annular grooves correspond to the permanent magnets 21 one by one, and the permanent magnets 21 are fixedly arranged in the annular grooves, the number of the permanent magnets 21 can be determined according to the actual required closing retaining force, in the present embodiment, the magnetic retaining device housing 20 is made of a metal magnetic conductive material.

[0038] As a more preferred embodiment of the present embodiment, the dynamic power module 7 comprises a plurality of power coil discs 22, each power coil disc 22 is sequentially fixed to the outside of the second moving channel from top to bottom, the power coil disc 22 can provide downward repulsion or upward repulsion to the repulsion disc 6 after being electrified, the number and interval of the power coil disc 22 can be determined in combination with the actual required stroke of the repulsion disc 6; as a more preferred embodiment of the present embodiment, the interval of any two adjacent power coil discs 22 is equal; as a more preferred embodiment of the present embodiment, the power coil disc 22 comprises an epoxy shell and a copper flat wire coil, and the copper flat wire coil is arranged in the inside of the epoxy shell.

[0039] As a more preferred embodiment of the present embodiment, the operating mechanism of the ultra-high voltage circuit breaker provided by the present application further comprises a coil driving power supply 23, the coil driving power supply 23 comprises a static coil power supply unit and a power coil disc power supply unit, the static coil power supply unit is electrically connected with 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 comprises a plurality of power supply modules, the number of the power supply modules is equal to the number of the 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 with 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, the power supply modules provide independent power support for the power coil discs 22, and the opening, closing or deceleration operation is realized by controlling the current.

[0040] As a more preferred embodiment of the present embodiment, the static coil power supply unit comprises a first capacitor 24, a second capacitor 25, a first freewheeling diode 26, a second freewheeling diode 27, a first power tube 28, a second power tube 29, a third power tube 30, a fourth power tube 31, a first output end 32, a second output end 33, a third output end 34 and a fourth output end 35, the positive pole of the first capacitor 24, the negative pole of the first freewheeling diode 26 and one end of the first power tube 28 are electrically connected, the other end of the first power tube 28 is electrically connected with the first output end 32, the negative pole of the first capacitor 24, the positive pole of the first freewheeling diode 26 and one end of the second power tube 29 are electrically connected, the other end of the second power tube 29 is electrically connected with the second output end 33, the negative pole of the second capacitor 25 is electrically connected with the negative pole of the first capacitor 24, the positive pole of the second capacitor 25, the negative pole of the second freewheeling diode 27 and one end of the third power tube 30 are electrically connected, the other end of the third power tube 30 is electrically connected with the third output end 34, the negative pole of the second capacitor 25, the positive pole of the second freewheeling diode 27 and one end of the fourth power tube 31 are electrically connected, the other end of the fourth power tube 31 is electrically connected with the fourth output end 35; the power supply module comprises a third capacitor 36, a fourth capacitor 37, a third freewheeling diode 38, a fourth freewheeling diode 39, a fifth power tube 40, a sixth power tube 41, a seventh power tube 42, an eighth power tube 43, a fifth output end 44 and a sixth output end 45, the positive pole of the third capacitor 36, the negative pole of the third freewheeling diode 38 and one end of the fifth power tube 40 are electrically connected, the other end of the fifth power tube 40 is electrically connected with the fifth output end 44, the negative pole of the third capacitor 36, the positive pole of the third freewheeling diode 38 and one end of the sixth power tube 41 are electrically connected, the other end of the sixth power tube 41 is electrically connected with the fifth output end 44, the negative pole of the fourth capacitor 37 is electrically connected with the negative pole of the third capacitor 36, the positive pole of the fourth capacitor 37, the negative pole of the fourth freewheeling diode 39 and one end of the seventh power tube 42 are electrically connected, the other end of the seventh power tube 42 is electrically connected with the sixth output end 45, the negative pole of the fourth capacitor 37, the positive pole of the fourth freewheeling diode 39 and one end of the eighth power tube 43 are electrically connected, the other end of the eighth power tube 43 is electrically connected with the sixth output end 45; the first output end 32 and the third output end 34 are electrically connected with the static opening coil 4, the second output end 33 and the fourth output end 35 are electrically connected with the static closing coil 5, the fifth output end 44 and the sixth output end 45 are electrically connected with the power coil disc 22, and the structure is simple, and the manufacturing and use are convenient.

[0041] It should be noted that the above-mentioned "electrically connected" is preferably achieved by wire connection.

[0042] As a more preferred embodiment of the present embodiment, during the transition of the ultra-high voltage circuit breaker from the closing state to the opening state:

[0043] In the closing state, the retaining block 3 is attached to the magnetic retaining device shell 20, at this time the retaining block 3 is subjected to the upward suction force of the permanent magnet 21; the second compression spring 18 is in the compressed state, and the elastic force is upward; the first compression spring 11 is in the compressed state, and all the first compression springs 11 as a whole are in the state of an approximate small head upward triangle or cone, and the spring force of all the first compression springs 11 is upward, that is, at this time the closing retaining force provided by the rigid connecting rod 1 for the moving contact in the arc extinguishing chamber is the sum of the suction force of the permanent magnet 21, the elastic force of the second compression spring 18 and the spring force of all the first compression springs 11;

[0044] The repulsion disc 6 is attached to the static opening coil 4, and in the opening state, the first power tube 28 and the third power tube 30 are closed;

[0045] The first capacitor 24 discharges the static opening coil 4, and the static opening coil 4 generates a magnetic field change to generate a downward repulsive force on the repulsion disc 6, when the repulsive force is greater than the closing retaining force, the repulsion disc 6 drives the rigid connecting rod 1 to move downward;

[0046] The uppermost dynamic coil disc 22 is defined as the first dynamic coil disc 22, and the second, third, …, Nth, N+1th, … are sequentially arranged below the first dynamic coil disc 22;

[0047] When the repulsion disc 6 passes through the first dynamic coil disc 22, the fifth power tube 40 and the eighth power tube 43 in the power supply module corresponding to the first dynamic coil disc 22 are closed, and the third capacitor 36 starts to discharge the first dynamic coil disc 22, and the first dynamic coil disc 22 generates a magnetic field change to continue to generate a downward repulsive force on the repulsion disc 6, so as to promote the repulsion disc 6 to move downward rapidly;

[0048] When the repulsion disc 6 passes through the second dynamic coil disc 22, the fifth power tube 40 and the eighth power tube 43 in the power supply module corresponding to the second dynamic coil disc 22 are closed, and the third capacitor 36 starts to discharge the first dynamic coil disc 22, and the first dynamic coil disc 22 generates a magnetic field change to continue to generate a downward repulsive force on the repulsion disc 6, so as to promote the repulsion disc 6 to move downward rapidly;

[0049] When the repulsion disc 6 passes through the Nth dynamic coil disc 22, the fifth power tube 40 and the eighth power tube 43 in the power supply module corresponding to the Nth dynamic coil disc 22 are closed, and the third capacitor 36 starts to discharge the first dynamic coil disc 22, and the first dynamic coil disc 22 generates a magnetic field change to continue to generate a downward repulsive force on the repulsion disc 6, so as to promote the repulsion disc 6 to move downward rapidly until close to the opening position;

[0050] During the rapid downward movement of the repulsion disc 6, too fast speed will cause the limit block 14 and the spring retaining unit shell 9 to collide violently to produce rebound, therefore, when the repulsion disc 6 approaches the opening position, the repulsion disc 6 needs to be decelerated;

[0051] The deceleration operation of the repulsion disc 6: when the repulsion disc 6 reaches above the N+1th power coil disc 22, the sixth power tube 41 and the seventh power tube 42 in the power supply module corresponding to the Nth power coil disc 22 are closed, the fourth capacitor 37 starts to discharge to the N+1th power coil disc 22, the N+1th power coil disc 22 generates a magnetic field change, generates an upward repulsion force on the repulsion disc 6, and promotes the deceleration of the repulsion disc 6;

[0052] Wherein, in the process that the repulsion disc 6 drives the rigid connecting rod 1 to move downward, the bottom end of the rigid connecting rod 1 collides with the oil buffer 16, the rigid connecting rod 1 is subjected to an upward elastic force, and the repulsion disc 6 is promoted to move downward to the closed position;

[0053] When reaching the open position, the repulsion disc 6 is preferably designed to be attached to the static closing coil 5, all the first compression springs 11 are in the compressed state, and all the first compression springs 11 are in the approximate small head downward triangular or conical state as a whole, the resultant force of the spring force of all the first compression springs 11 is downward, and the resultant force of the spring force of all the first compression springs 11 is the open holding force;

[0054] The process from closing to opening is ended.

[0055] The super-high-voltage circuit breaker operating mechanism provided by the application combines the permanent magnet holding technology, the electromagnetic driving technology and the buffer technology, realizes efficient, rapid and accurate control of the opening and closing actions of the circuit breaker, and significantly improves the operation speed and stability of the mechanism through the collaborative work of the innovative design of the dynamic power module 7, the permanent magnet holding module 2 and the spring holding module 8; the multi-stage power coil disc 22 driving and the repulsion disc 6 design overcome the bottleneck problem of the limited stroke of the traditional mechanism; through the deceleration control of the buffer module 15 and the multi-stage power coil disc 22, the motion impact is effectively reduced, and the service life and operation reliability of the components are improved.

[0056] The principles and implementation modes of the application are described by using specific examples in the application; the above examples are only used to help understand the method and core idea of the application; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation modes and application ranges will be changed. In conclusion, the content of the specification should not be understood as a limitation of the application.

Claims

1. An operating mechanism for an ultra-high voltage circuit breaker, characterized in that: The device includes a rigid connecting rod, a permanent magnet 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 is movable upwards or downwards, and its top end is used for transmission connection with the moving contact inside the arc-extinguishing chamber. The permanent magnet holding module, the static opening coil, and the static closing coil are fixedly arranged sequentially from top to bottom, and are sleeved on the rigid connecting rod. The holding block and the repulsion 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, and the repulsion disk is placed in a second moving channel between the static opening coil and the static closing coil. The dynamic power module is fixedly sleeved outside the second moving channel. The permanent magnet holding module can provide an upward attractive force to the holding block. When the static opening coil is energized, it can provide a downward repulsive force to the repulsion disk. When the static closing coil is energized, it can provide an upward repulsive force to the repulsion disk. The dynamic power module, when energized, can provide a downward or upward repulsive force to the repulsive disk. During the transition of the ultra-high voltage circuit breaker from the closed to the open state, the energized dynamic power module first provides a downward repulsive force to the repulsive disk and then an upward repulsive force. Similarly, during the transition of the ultra-high voltage circuit breaker from the open to the closed state, the energized dynamic power module first provides an upward repulsive force to the repulsive disk and then a downward repulsive force. The dynamic power module includes several power coil disks, each of which is sequentially and fixedly mounted outside the second moving channel from top to bottom. When energized, each power coil disk can provide a downward or upward repulsive force to the repulsive disk. When the rigid link moves downward to the end of its stroke, the dynamic power module is energized to provide an upward repulsive force to the repulsive disk. When the rigid connecting rod moves upward to the end of its stroke, the dynamic power module is energized to provide a downward repulsive force to the repulsive disk. The topmost power coil is defined as the first power coil. When the repulsive disk passes the Nth power coil, the fifth and eighth power transistors in the power supply module corresponding to the Nth power coil are closed, and the third capacitor begins to discharge to the Nth power coil. The Nth power coil generates a change in magnetic field, producing a downward repulsive force on the repulsive disk until it approaches the open position. When the repulsive disk reaches above the (N+1)th power coil, the sixth and seventh power transistors in the power supply module corresponding to the (N+1)th power coil are closed, and the fourth capacitor begins to discharge to the (N+1)th power coil. The (N+1)th power coil generates a change in magnetic field, producing an upward repulsive force on the repulsive disk.

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

3. The operating mechanism of the ultra-high voltage circuit breaker according to claim 2, characterized in that: The spring retaining module includes a spring retaining unit housing, a connecting block, several first compression springs, several spring middle rods, and several spring bases. The spring retaining unit housing is fixedly positioned below the stationary closing coil and is sleeved on the rigid connecting rod. The connecting block, the first compression springs, the spring middle rods, and the spring bases are all located inside the spring retaining unit housing. The connecting block is fixedly sleeved on the rigid connecting rod. The number of first compression springs, the number of spring middle rods, and the number of spring bases are equal, and the first compression springs, the spring middle rods, and the spring bases correspond one-to-one. The spring bases are all arranged around the rigid connecting rod, and the spring bases are fixedly mounted on the inner side wall of the spring retaining unit housing. 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 connected to the spring base, and the other end of the spring middle rod and the other end of the first compression spring are 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 retaining module also includes a limiting block, which is fixedly sleeved on the bottom end of the rigid connecting rod. The bottom of the spring retaining unit housing has a through hole, which can prevent the limiting block from passing through.

4. The operating mechanism of the ultra-high voltage circuit breaker according to claim 2, characterized in that: It also includes a buffer module, which is positioned below the spring retaining module. The buffer module is able to contact the bottom end of the rigid link and provide an upward buffering 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 fixing block. The bottom fixing block is fixedly placed below the spring retaining module. The oil buffer is disposed on the bottom fixing block. The top end of the oil buffer can contact the bottom end of the rigid connecting rod. The oil buffer can provide an upward buffering force to the rigid connecting rod.

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

7. The operating mechanism of the ultra-high voltage circuit breaker according to claim 1, characterized in that: It also includes several fixed insulating rods, each of which is arranged around the rigid connecting rod. 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 rods. The permanent magnet holding module includes a magnetic holding device housing and several permanent magnets. The magnetic holding device housing has several annular grooves, the number of which is equal to the number of permanent magnets. Each annular groove corresponds to a permanent magnet, and the permanent magnets are fixedly disposed within the annular grooves.

8. The operating mechanism of the ultra-high voltage circuit breaker according to claim 1, characterized in that: It also includes a coil drive power supply, which includes a stationary coil power supply unit and a power coil disk power supply unit. The stationary coil power supply unit is electrically connected to the stationary opening coil and the stationary closing coil, and can supply power to the stationary opening coil and the stationary closing coil. The power coil disk power supply unit includes several power supply modules, the number of which is equal to the number of power coil disks. Each power supply module corresponds one-to-one with a power coil disk, and the power supply module is electrically connected to the power coil disk, and can supply power to the power coil disk.

9. The ultra-high voltage circuit breaker operating mechanism according to claim 8, 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 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 terminal of the first capacitor, the negative terminal 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 terminal of the first capacitor, the positive terminal 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 terminal of the second capacitor is electrically connected to the negative terminal of the first capacitor. The positive terminal of the second capacitor, the negative terminal 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 terminal of the second capacitor, the positive terminal 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, and a fourth freewheeling diode. The fifth, sixth, seventh, and eighth power transistors, the fifth output terminal, and the sixth output terminal are connected as follows: the positive terminal of the third capacitor, the negative terminal 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 terminal of the third capacitor, the positive terminal 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 terminal of the fourth capacitor is electrically connected to the negative terminal of the third capacitor; the positive terminal of the fourth capacitor... The negative terminal of the fourth freewheeling diode is electrically connected to one end of the seventh power transistor, and the other end of the seventh power transistor is electrically connected to the sixth output terminal. The negative terminal of the fourth capacitor, the positive terminal of the fourth freewheeling diode, and one end of the eighth power transistor are electrically connected, and 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, and the fifth output terminal and the sixth output terminal are electrically connected to the power coil disk.

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