CN117275993A - Commutation isolating switch operating mechanism and operating method thereof - Google Patents

Abstract

The invention discloses a commutation isolating switch operating mechanism which comprises a first operating device, a second operating device, a third operating device and a control system, wherein the first operating device and the second operating device are respectively arranged at two ends of a bottom frame; the first operating device, the second operating device and the third operating device are electrically connected with the control system, and when the control system receives a task instruction, the transmission device drives the first operating device and the second operating device to synchronously operate so as to switch any two-phase sequence of the main circuit. Because the transmission device is used for transmission operation, the interlocking of two phase sequence positions is realized, the technical defect that the two phase sequences in the phase sequence can not be synchronously adjusted and locked by the isolating switch in the prior art is overcome, the unnecessary adjustment process is reduced, the operation steps are simplified, and the production efficiency is improved.

Description

Commutation isolating switch operating mechanism and operating method thereof

Technical Field

The invention belongs to the technical field of switch design and manufacture of high-voltage power transmission and transformation systems, and particularly relates to a commutation isolating switch operating mechanism and an operating method thereof.

Background

The pumped storage has multiple functions of peak regulation, frequency modulation, phase modulation, energy storage, accident reserve and the like, is a green low-carbon clean flexible regulation power supply of a power system which is the most mature in the prior art, has optimal economy and has large-scale development conditions, the power generation of the current pumped storage power station or the motor has two basic working conditions of a power generation working condition and an electric (pumping) working condition, so that the energy is fully utilized, and a change-isolation switch is one of complete switch equipment of the pumped storage power station, is arranged on a voltage outlet loop of the power generation motor, is connected with a generator breaker in series, is special equipment for realizing the change working condition of the unit, and is indispensable for the normal operation of the pumped storage power station.

The operating mechanism is an important mechanism for operating the isolating switch, and mainly adjusts the phase sequence of the isolating switch according to the task instruction received by the master control room, so that the specific operation of the task instruction is realized; at present, in the operation process of a phase-change isolating switch, the existing operating mechanism cannot synchronously adjust two phase sequences on the phase-change isolating switch and lock the phase sequence positions, so that the operating mechanism needs to be repeatedly adjusted in the phase sequence adjustment process, the time consumption is serious, and the operation requirement cannot be met.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a commutation isolating switch operating mechanism and an operating method thereof.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:

according to a first aspect of the present invention there is provided a commutation disconnector operating mechanism comprising: the first operating device, the second operating device, the third operating device and the control system are respectively arranged at two ends of the underframe, the middle part of the underframe is provided with a driving device, and the driving device is in transmission connection with the first operating device and the second operating device through transmission devices;

the first operating device, the second operating device and the third operating device are electrically connected with the control system, and when the control system receives a task instruction, the transmission device drives the first operating device and the second operating device to synchronously operate so as to switch any two-phase sequence of the main circuit.

Further, the first operating device and the second operating device are vertically arranged at two ends of the top of the underframe, the transmission device comprises a reversing gear box, and the driving device is arranged at the edge of the top of the underframe and is positioned at one side outside the reversing gear box;

the periphery of the inner side of the reversing gear box is respectively provided with a first output bevel gear, an electric side drive bevel gear, a second output bevel gear and a manual side drive bevel gear, and the electric side drive bevel gear and the manual side drive bevel gear are in meshed connection with the first output bevel gear and the second output bevel gear;

the driving end of the driving device is fixedly connected with the electric side driving bevel gear, and the first output bevel gear and the second output bevel gear are respectively and fixedly connected with the first operating device and the second operating device through connecting rods.

Further, the first operating device and the second operating device respectively comprise a first reduction gearbox and a second reduction gearbox, and the tops of the first reduction gearbox and the second reduction gearbox are respectively vertically provided with a first adjusting device and a second adjusting device;

the first speed reduction box and the second speed reduction box are respectively provided with a first steering transmission device and a second steering transmission device, the first steering transmission device is fixedly connected with the second output bevel gear, the second steering transmission device is fixedly connected with the first output bevel gear, and the first steering transmission device and the second steering transmission device are connected with the first adjusting device and the second adjusting device through speed reduction units.

Further, the first adjusting device and the second adjusting device are identical in structure, the first adjusting device comprises a support, two ends of the support are fixedly connected through a ball screw pair, a tapered roller bearing is sleeved at the end part, close to the first reduction gearbox, of the ball screw pair, and the tapered roller bearing is fixedly connected with the first steering transmission device through a reduction unit.

Further, the outer side of the ball screw pair is in threaded connection with a guide assembly, the guide assembly is in sliding connection with the support, and a travel switch and an auxiliary switch assembly are respectively arranged on two opposite sides of the support at intervals in sequence; the inner bottom surface of the bracket is respectively provided with a movable groove and an indication nameplate, the indication nameplates are sequentially arranged at one side of the movable groove at intervals and correspond to the travel switch and the auxiliary switch assembly, and the bottom of the guide assembly is fixedly connected with a finger plate (;

when the two ends of the guide assembly slide in the support and are matched with the travel switch and the auxiliary switch assembly at different positions, the finger plate points to the indication nameplate corresponding to the positions of the travel switch and the auxiliary switch assembly.

Further, two ends of the bracket are respectively and fixedly connected with a first bearing cover and a second bearing cover, and two ends of the ball screw pair are respectively and rotatably connected to the first bearing cover and the second bearing cover;

through holes are formed in two ends of the first bearing cover, push rods are further arranged on the guide assembly, and the end parts of the two push rods penetrate through the through holes and extend outwards.

Further, the guide assembly comprises a fixed block, the fixed block is sleeved on the outer side of the ball screw pair, and a travel switch driving plate and an auxiliary switch driving plate are respectively arranged on two sides of the fixed block;

one ends of the travel switch driving plate and the auxiliary switch driving plate, which are far away from the fixed block, are respectively provided with a travel switch control cam and a roller, and the travel switch control cam and the roller are respectively matched with the travel switch and the auxiliary switch component.

Further, the first operating device, the second operating device and the third operating device are all identical in structure.

According to a second aspect of the present invention, there is provided an operating method, the method being carried out using an operating mechanism as described above, comprising:

receiving a task instruction;

determining a working device according to the task instruction;

and selecting a corresponding mode to perform the operation according to the determined operation device.

Further, the task instruction specifically includes: pumping instructions, generating instructions and isolating instructions.

Compared with the prior art, the invention has the following beneficial effects:

the control system controls the driving device to synchronously drive the first operating device and the second operating device by utilizing the transmission device so as to enable the first operating device and the second operating device to adjust phase sequences at the same time; because the transmission device is used for transmission operation, the interlocking of two phase sequence positions is realized, the technical defect that the two phase sequences in the phase sequence can not be synchronously adjusted and locked by the isolating switch in the prior art is overcome, the unnecessary adjustment process is reduced, the operation steps are simplified, and the production efficiency is improved.

Drawings

For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of a commutation isolator operating mechanism according to the present invention;

FIG. 2 is a cross-sectional view of a commutation disconnector operating mechanism in accordance with the present invention;

FIG. 3 is a schematic diagram of a first operating device in a phase-change isolating switch operating mechanism according to the present invention;

FIG. 4 is a side cross-sectional view of a first actuator in a commutating disconnector actuator according to the present invention;

FIG. 5 is a schematic cross-sectional view of an end portion of a first operating device in a phase change disconnecting switch operating mechanism according to the present invention;

FIG. 6 is a right side view of a first actuator of the operation mechanism of the phase change disconnecting switch according to the present invention;

FIG. 7 is a schematic view of a guide plate in a guide assembly of a phase change disconnector operating mechanism according to the present invention;

FIG. 8 is a schematic view of an inner race of a bearing in a guide assembly of a commutating isolator operating mechanism according to the present invention;

FIG. 9 is a schematic diagram illustrating installation of a guide bearing in a guide assembly of a phase change disconnecting switch operating mechanism provided by the invention;

FIG. 10 is a schematic diagram of a transmission mechanism in a phase change isolating switch operating mechanism according to the present invention;

FIG. 11 is a schematic diagram of a first steering gear in a phase change isolating switch operating mechanism according to the present invention;

FIG. 12 is a schematic diagram of a second steering gear in a phase change disconnector operating mechanism according to the present invention;

FIG. 13 is a schematic view of a third steering gear in a phase change isolating switch operating mechanism according to the present invention;

FIG. 14 is a schematic view of a travel switch control cam in a commutation isolation switch operating mechanism according to the present invention;

FIG. 15 is a schematic view illustrating installation of a guide assembly in a phase change disconnector operating mechanism according to the present invention;

FIG. 16 is a schematic diagram of a first side view of a third operating device in a phase change isolation switch operating mechanism according to the present invention;

FIG. 17 is a schematic diagram of a third adjusting device in a phase change disconnecting switch operating mechanism according to the present invention;

FIG. 18 is a side view of a third adjustment device in a phase change disconnecting switch operating mechanism provided by the invention;

FIG. 19 is a schematic view of a wedge-shaped surface of a travel switch control cam in a commutating isolator operating mechanism according to the present invention;

wherein: 1. a co-tank phase chassis; 2. a first reduction gearbox; 3. a coupling; 4. a first adjusting device; 5. a connecting rod; 6. a second reduction gearbox; 7. a second adjusting device; 8. a separate phase chassis; 9. a third adjusting device; 10. a third reduction gearbox; 11. a first manual unlocking assembly; 12. a power source assembly; 13. a driving device; 14. a reversing gear box; 15. a second manual unlocking assembly; 16. a U-shaped bracket; 17. an auxiliary switch assembly; 18. a finger plate; 19. pumping water position nameplate; 20. isolating the position nameplate; 21. a power generation position nameplate; 22. a first bearing cap; 23. tapered roller bearings; 24. a ball screw pair; 25. a guide assembly; 26. a second bearing cover; 27. a push rod; 28. a fixed block; 29. a travel switch drive plate; 30. a screw; 31. a roller; 32. a shaft pin; 33. an auxiliary switch driving plate; 34. a power generation side safety position switch; 35. a power generation-isolation stop position switch; 36. a water pumping stop position switch; 37. a water pumping side safety position switch; 38. a travel switch control cam; 39. a pump-isolation stop position switch; 40. a power generation stop position switch; 41. a guide plate; 42. a bearing inner ring; 43. a compression screw; 44. a guide pin; 45. a guide bearing; 46. a bottom plate; 47. a reversing base; 48. a first output bevel gear; 49. an electric side drive bevel gear; 50. a second output bevel gear; 51. a manual side drive bevel gear; 52. a reduction base; 53. a ball bearing; 54. a reduction input bevel gear; 55. a reduction output bevel gear; 56. a first reduction output shaft; 57. a second reduction output shaft; 58. a single phase deceleration base; 59. a single phase manual side drive bevel gear; 60. a single phase output bevel gear; 61. a single phase output shaft; 62. single phase electric side drive bevel gear. 63. A closing stop position switch; 64. a brake-off stop position switch; 65 closing side safety position switch; 66. a brake-separating side safety position switch; 67. closing position nameplate; 68. and the separating brake position nameplate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The invention is described in further detail below with reference to the attached drawing figures:

according to a first aspect of the embodiment of the present invention, referring to fig. 1, the embodiment of the present invention discloses a commutation disconnecting switch operating mechanism, which includes: the control system is a programmable controller Siemens S7-400 series PLC, the CPU module is 414-5H, and the operation speed can reach 18.75ns at maximum. The first operating device and the second operating device are respectively arranged at two ends of the underframe, the third operating device is independently arranged, the underframe is a co-tank underframe 1, a driving device is arranged in the middle of the co-tank underframe 1, and the driving device is in transmission connection with the first operating device and the second operating device through a transmission device; the first operating device, the second operating device and the third operating device are electrically connected with the control system, and when the control system receives a task instruction, the transmission device drives the first operating device and the second operating device to synchronously operate so as to switch any two-phase sequence of the main circuit.

Still further, as shown in fig. 10, the driving device is a motor, and the driving device includes a reversing gear box 14, a bottom plate 46 is provided at an inner bottom of the reversing gear box 14, a reversing base 47 is fixedly connected to a top of the bottom plate 46, and a first output bevel gear 48, an electric side drive bevel gear 49, a second output bevel gear 50 and a manual side drive bevel gear 51 are respectively provided at an inner periphery of the reversing base 47, that is, at an inner periphery of the reversing gear box 14, wherein one ends of the electric side drive bevel gear 49 and the manual side drive bevel gear 51 are respectively engaged with the first output bevel gear 48 and the second output bevel gear 50; the other ends of the electric side driving gear 49 and the manual side driving gear 51 are respectively connected with a motor and a second manual unlocking assembly, and the first output bevel gear 48 and the second output bevel gear 50 are respectively fixedly connected with a first operating device and a second operating device through connecting rods 5; the first operating device is responsible for a phase switch, the second operating device is responsible for a phase switch, when the control system receives a task instruction issued by the general control room, the control system controls the driving device to synchronously drive the first operating device and the second operating device through the transmission device, and it can be understood that in the process of synchronous operation, the operation sequences of the first operating device and the second operating device are opposite. Specifically, the first operating device and the second operating device respectively comprise a first reduction gearbox 2 and a second reduction gearbox 6, the tops of the first reduction gearbox 2 and the second reduction gearbox 6 are respectively vertically provided with a first adjusting device 4 and a second adjusting device 7, and the first adjusting device 4 and the second adjusting device 7 are respectively used for adjusting the phase sequences of the phase A switch and the phase B switch; the first reduction gearbox 2 and the second reduction gearbox 6 are respectively provided with a first steering transmission device and a second steering transmission device, the first steering transmission device and the second steering transmission device are connected with the first adjusting device 4 and the second adjusting device 7 through reduction units, and the reduction units comprise a first reduction unit and a second reduction unit; the first steering gear is fixedly connected to the second output bevel gear 50 and the second steering gear is fixedly connected to the first output bevel gear 48. Further, the first steering gear and the second steering gear each include a reduction base 52, a ball bearing 53, a reduction input bevel gear 54, and a reduction output bevel gear 55; as shown in fig. 11 and 12, fig. 11 is a schematic structural view of the first steering gear, fig. 12 is a schematic structural view of the second steering gear, in fig. 11, a reduction input bevel gear 54 and a reduction output bevel gear 55 are respectively mounted on two axially vertical sides of a reduction base 52 through ball bearings 53, wherein the reduction input bevel gear 54 and the reduction output bevel gear 55 are in meshed connection, a first output bevel gear 48 is fixedly connected with the reduction input bevel gear 54 through a connecting rod 5, the other end of the reduction output bevel gear 55 is fixedly connected with one end of a first reduction unit, and the other end of the first reduction unit is mounted in a first adjusting device 4 to provide driving force for the operation of the first adjusting device 4; in fig. 12, both axially vertical sides of the reduction base 52 in the second steering gear are respectively mounted with a reduction input bevel gear 54 and a reduction output bevel gear 55 through ball bearings 53, and the mounting positions of the reduction input bevel gear 54 and the reduction output bevel gear 55 in the second steering gear are opposite to the mounting positions of the reduction input bevel gear 54 and the reduction output bevel gear 55 in the first steering gear; it should be noted that the second output bevel gear 50 is also fixedly connected with the speed reduction input bevel gear 54 in the second steering transmission device through the connecting rod 5, while the speed reduction output bevel gear 55 in the second steering transmission device is fixedly connected with one end of the second speed reduction unit, and the other end of the second speed reduction unit is installed in the second adjusting device 7 to provide driving force for the operation of the second adjusting device 7; specifically, the first reduction unit and the second reduction unit are a first reduction output shaft 56 and a second reduction output shaft 57, respectively.

Further, since the first adjusting device 4 and the second adjusting device 7 have the same structure, it can be understood that in a specific operation process, the operation sequence of the first adjusting device 4 and the second adjusting device 7 is opposite, and the structure composition and the connection relationship of the first adjusting device 4 are described in detail below, as shown in fig. 3 and fig. 4, the first adjusting device 4 includes a bracket, which is a U-shaped bracket 16, two ends of an opening of the bracket 16 are fixedly connected through a ball screw pair 24, an end portion, close to the first reduction gearbox 2, of the ball screw pair 24 is sleeved with a tapered roller bearing 23, and the tapered roller bearing 23 is fixedly connected through a reduction output bevel gear 55 in the first reduction gearbox 56; the outside of the ball screw pair 24 is in threaded connection with a guide component 25, the guide component 25 is in sliding connection with the bracket 16, two opposite sides of the longer length of the bracket 16 are respectively provided with a travel switch and an auxiliary switch component 17 at intervals in sequence, the travel switch is used for travel control, position signal function feedback and electric safety function, and specifically comprises a power generation side safety position switch 34, a power generation-isolation stop position switch 35, a water pumping stop position switch 36, a water pumping side safety position switch 37, a water pumping-isolation stop position switch 39 and a power generation stop position switch 40; the inner bottom surface of the opening end of the bracket 16 is respectively provided with a movable groove and an indication nameplate, the movable groove is arranged along the longitudinal direction of the bracket 16, and the indication nameplates are sequentially arranged at one side of the movable groove at intervals and correspond to the travel switch and the auxiliary switch assembly 17; as shown in fig. 3, the indication nameplate in the first adjusting device 4 comprises a pumping position nameplate 19, an isolation position nameplate 20 and a power generation position nameplate 21 from the bottom end to the top end of the bracket 16, wherein the three nameplates are arranged at equal intervals; the nameplate in the second adjusting device 7 sequentially generates electricity, isolates and pumps water from the bottom end to the top end of the bracket 16, so that the installation positions of the electricity generating nameplate and the water pumping nameplate in the first adjusting device 4 and the second adjusting device 7 are opposite.

Further, the bottom of the guiding component 25 is fixedly connected with the finger plate 18; as shown in fig. 1, 3 and 15, when the two ends of the guiding component 25 slide in the bracket 16 to be matched with the travel switch and auxiliary switch component 17 at different positions, the finger plate 18 points to the indication nameplate corresponding to the position of the travel switch and auxiliary switch component 17; specifically, two ends of the bracket 16 are fixedly connected with a first bearing cover 22 and a second bearing cover 26 respectively, and two ends of the ball screw pair 24 are rotatably connected to the first bearing cover 22 and the second bearing cover 26 respectively; through holes are formed in two ends of the first bearing cover 22, push rods 27 are further arranged on the guide assembly 25, and the end portions of the two push rods 27 penetrate through the through holes to extend outwards and are in transitional connection with loads. Specifically, as shown in fig. 5, the guide assembly 25 includes a fixed block 28, the fixed block 28 is sleeved on the outer side of the ball screw pair 24, and two sides of the fixed block 28 are respectively provided with a travel switch driving plate 29 and an auxiliary switch driving plate 33; the travel switch driving plate 29 and the auxiliary switch driving plate 33 are respectively provided with a travel switch control cam 38 and a roller 31 at one end far away from the fixed block 28, the roller 31 is hinged with the auxiliary switch driving plate 33 through a shaft pin 32, and the travel switch control cam 38 and the roller 31 are respectively matched with the travel switch and the auxiliary switch assembly 17.

In this embodiment, the fixed block 28 is further provided with a guide plate 41, the guide plate 41 is fixed at the bottom of the fixed block 28 through a bearing inner ring 42 and a compression screw 43, the bottom of the guide plate 41 is provided with a finger plate 18, the finger plate 18 is located at one side of the bracket 18 where the indication nameplate is arranged, the guide plate 41 is provided with two guide pins 44, the two guide pins 44 are provided with guide bearings 45, the guide bearings 45 are matched with the movable grooves, and the degree of freedom of the ball screw pair 24 along the circumferential direction is limited.

In this embodiment, the third operating device is responsible for the C-phase switch, as shown in fig. 16, the third operating device includes an independent phase chassis 8, a motor and a third reduction gearbox 10 are also installed on the independent phase chassis 8, and a third adjusting device 9 is vertically installed on the top of the third reduction gearbox 10, and since the structures of the first, second and third adjusting devices 9 are the same, the third adjusting device 9 will not be described in detail in this embodiment, and the difference between the third adjusting device 9 and the first and second adjusting devices 7 is that the number of travel switches and auxiliary switch assemblies 17 on the third adjusting device 9 is two, and the number of indication nameplates is two, which are closing and opening indication nameplates respectively; as shown in fig. 13, the inner side of the third reduction gearbox is provided with a single-phase manual side drive bevel gear 59, a single-phase output bevel gear 60 and a single-phase electric side drive bevel gear 62 through ball bearings 53, the single-phase output bevel gear 60 is meshed with the single-phase electric side drive bevel gear 62, the single-phase output bevel gear 60 is meshed with the single-phase manual side drive bevel gear 59, the single-phase output bevel gear 60 is fixedly connected with one end of a single-phase output shaft 61, and the other end of the single-phase output shaft 61 is arranged in the third adjusting device 9 to provide driving force for the operation of the third adjusting device 9; wherein the drive end of the motor is fixedly connected with the electric side drive bevel gear 62, and the manual side drive bevel gear 59 is connected with the second manual unlocking assembly 15; it should be noted that the first manual unlocking assembly 11 is also mounted on the separate phase chassis 8, the first manual unlocking assembly 11 is connected with the manual side drive bevel gear, the first and second operating devices share one motor and one second manual unlocking assembly 15, and the third operating device uses one motor and one first manual unlocking assembly 11 separately.

In the present embodiment, in the reversing gear case 14, since one ends of the electric-side drive gear 49 and the manual-side drive bevel gear 51 are each in meshed connection with the first output bevel gear 48 and the second output bevel gear 50; the other ends of the electric side driving gear 49 and the manual side driving gear 51 are respectively connected with the motor and the second manual unlocking component, and the output end outputs opposite torque no matter the electric input end or any one of the manual input ends inputs power; in the first reduction gearbox 2, a first reduction output shaft 56 in the first reduction gearbox 2 is fixedly connected with a reduction output bevel gear 55 in the first reduction gearbox 2, and power is input anticlockwise and output clockwise when viewed from the input side direction and the output side direction respectively; in the second reduction gearbox 6, a second reduction output shaft 57 is fixedly connected with a reduction output bevel gear 55 in the second reduction gearbox 6, and power is input anticlockwise and output anticlockwise when viewed from the input side direction and the output side direction respectively; further, whether the input of the electric side drive bevel gear 49 or the manual side drive bevel gear 51 of the reversing gear 14 is clockwise or counterclockwise, the first reduction output shaft 56 in the first reduction gearbox 2 and the second reduction output shaft 57 in the second reduction gearbox 6 are always output synchronized, and then the operation power which is opposite to each other is provided, so that the moving operation sequence of the first adjusting device 4 and the second adjusting device 7 is opposite, for example, when the indicator plate on the first adjusting device 4 moves from bottom to top, that is, from pumping and isolating, to power generation, the indicator plate on the second adjusting device 7 moves from top to bottom, that is, from pumping and isolating, to power generation; in the third reduction gearbox 10, the single-phase electric-side drive bevel gear 62 is engaged with the single-phase output bevel gear 60, and the single-phase output shaft 61 is fixedly connected with the reduction output bevel gear 60, and power is input clockwise and output counterclockwise when viewed from the input side and the output side, respectively.

In this embodiment, as shown in fig. 14, the travel switch control cam 38 has a rectangular structure, the cross section of which is rectangular, two sides of the travel switch control cam 38 are respectively provided with an α wedge surface and a β wedge surface, the shapes of the two wedge surfaces are symmetrically arranged about the center of the travel switch control cam 38, the widths of the two wedge surfaces respectively occupy half of the thickness of the travel switch control cam 38, and three sections of step round holes are further arranged on the travel switch control cam 38 for positioning, mounting and fixing; further, the α wedge surfaces on the two sides of the travel switch control cam 38 are matched with the power generation stop position switch 40, the power generation-isolation stop position switch 35, the water pumping stop position switch 36 and the water pumping-isolation stop position switch 39, the travel switch control cam 38 moves linearly and reciprocally along with the movement of the nut on the ball screw pair 24, when the α wedge surfaces on the two sides of the travel switch control cam 38 move to the corresponding positions along with the movement of the nut on the ball screw pair 24, the position switch of the corresponding positions is gradually stabilized until the state is switched, the β wedge surfaces on the two sides of the travel switch control cam 38 are just matched with the power generation side safety position switch 34 and the water pumping side safety position switch 37 respectively, and in the unexpected cases of failure of the phase a switch, the phase B switch and the phase C switch, the travel switch control cam 38 can gradually stabilize the safety switch of the corresponding positions, and turn off the control and power supply, thereby achieving the purpose of protecting the system.

It will be appreciated that the isolating switch in this embodiment has three working stations, isolating, generating and pumping, whether it is switched into the generating or pumping position, and should first return to the isolating position. The purpose of the switching-in of the power generation working position or the switching-in of the pumping working position is to synchronously switch the phase sequence of any two phases of the main circuit, so that the load works in a power generator or motor working mode, and in the embodiment, the switching-in of the phase sequence of the A, B two-phase switch is realized; taking an electric operation cut-in pumping station as an example, as shown in fig. 1 and 2, after receiving an instruction of cutting-in to a pumping working position from a main control room, a control system controls a motor shared by a first operating device and a second operating device (A phase and B phase) to start, and after the motor starts, the motor rotates anticlockwise; at the same time, the motor on the third operating device (C-phase) is also started to rotate clockwise, as shown in fig. 10, the electric side drive bevel gear 49 as an input end in the reversing gear box 14 rotates counterclockwise, and the second output bevel gear 50 in the second reduction gear box 6 toward the second operating device (B-phase) rotates counterclockwise as viewed from the center of the reversing gear box 14, and at the same time, the first output bevel gear 48 in the first reduction gear box 2 toward the first operating device (a-phase); as seen from the input end in fig. 11 and 12, the reduction input bevel gear 54 in the first steering gear in the first reduction gearbox 2 (a phase) rotates counterclockwise, and as seen from the output end, the reduction output bevel gear 55 in the first steering gear in the first reduction gearbox 2 (a phase) rotates clockwise; the reduction input bevel gear 54 in the second steering gear in the second reduction gearbox 6 (phase B) rotates counterclockwise as seen from the input end, and the reduction output bevel gear 55 in the second steering gear in the second reduction gearbox 6 (phase B) rotates counterclockwise as seen from the output end; it can be seen that after the output end of the reversing gear box 14 is connected with the input ends of the first reduction gearbox 2 (a phase) and the second reduction gearbox 6 (B phase) by the connecting rod 5, the first reduction gearbox 2 (a phase) and the second reduction gearbox 6 (B phase) must output reverse power.

Further, as shown in fig. 3, 4 and 5, the first adjusting device 4, the second adjusting device 7 and the third adjusting device 7 have the same structure, the difference between the first adjusting device and the second adjusting device is that the installation positions of the power generation position nameplate 21 and the pumping position nameplate 19 are just exchanged with each other, after the first reduction gearbox 2 (phase a) and the second reduction gearbox 6 (phase B) are respectively connected with the first adjusting device 4 and the second adjusting device 7, the ball screw pair 24 in the first adjusting device 4 and the second adjusting device 7 respectively do linear motion downwards and upwards, and reach the pumping position at the same time, so as to drive the isolating electrode to synchronously change the phase sequence, and further enable the load to enter the working mode of the motor; as shown in fig. 1, 13 and 16, the drive bevel gear 62 on the single-phase electric side in the third reduction gearbox 10 (C-phase) rotates clockwise, the output bevel gear 60 on the single-phase output in the third reduction gearbox 10 (C-phase) rotates counterclockwise when seen from the output end, after the coupling 3 connects the third reduction gearbox 10 (C-phase) with the third adjusting device 9, the input power of the third reduction gearbox 10 (C-phase) will be connected to the third adjusting device 9, the ball screw pair 24 in the third adjusting device 9 will move linearly upwards to reach the closing position, and the action process is synchronous with the action process of the first adjusting device 4 and the second adjusting device 7, so as to change the motor working mode of disconnecting the switch three-phase electrode from the switch-on load.

Similarly, after the control system receives the pumping-isolating instruction, the first reduction gearbox 2 (phase a) and the second reduction gearbox 6 (phase B) are in the same electric operation and cut into the pumping action process except for the opposite movement direction, at this time, the first adjusting device 4 and the second adjusting device 7 reach the intermediate isolating position from the pumping position, and the third adjusting device 9 reaches the opening position.

Similarly, after the control system receives the power generation instruction, except for the movement directions of the first adjusting device 4 and the second adjusting device 7, the other electric operations are switched into the action process of pumping water, at this time, the A, B phase starts from the middle isolation position, the ball screw pair 24 in the first adjusting device 4 of the first reduction gearbox 2 (A phase) and the ball screw pair 24 in the second adjusting device 7 of the second reduction gearbox 6 (B phase) do linear movement upwards and downwards respectively, and simultaneously reach the power generation position, and synchronously, the ball screw pair 24 in the third adjusting device 9 of the third reduction gearbox 10 (C phase) do linear movement upwards and reach the closing position, so that the phase change of the isolating electrode is driven to change the phase sequence, and the load enters the working mode of the power generator.

Similarly, after the control system receives the power generation-isolation instruction, the electric operation action process is the same as the step process of the water pumping action, and the difference is that at this time, the indication nameplate in the first adjusting device 4 of the first reduction gearbox 2 (phase a) and the indication nameplate in the second adjusting device 7 of the second reduction gearbox 6 (phase B) reach the middle isolation position from the water pumping position phase, and the indication nameplate in the third adjusting device 9 of the third reduction gearbox 10 (phase C) reaches the brake separating position.

The operation process of receiving different task instructions from the control system can be seen that the first reduction gearbox 2 (A phase) and the second reduction gearbox 6 (B phase) structurally have synchronous and reverse motion mechanical linkage functions, so that the mechanical interlocking function requirement of a main wiring can be mechanically met, the technical defect that a change-isolation switch in the prior art cannot synchronously adjust and lock two phase sequences in the change-isolation switch is overcome, unnecessary adjustment processes are reduced, operation steps are simplified, production efficiency is improved, and the change-isolation switch equipment is simpler and more reliable to operate.

Further, in order to make the motion control and position signal conversion principle of the present embodiment well known: in the following, as shown in fig. 3, 4, 5, 6, 17 and 18, when the control system receives the instruction of cutting into the pumping working position, the ball screw pair 24 in the first adjusting device 4, the second adjusting device 7 and the third adjusting device 9 will simultaneously start to make straight-line motions respectively downward, upward and upward under the driving of the respective reduction gearbox, so as to drive the respective travel switch driving plate 29 and the travel switch control cam 38 arranged on the respective travel switch driving plate to make straight-line motions therewith, when approaching the pumping position, taking the first adjusting device 4 as an example, the α wedge surface on the left side surface of the travel switch control cam 38 is firstly contacted with the pumping stop position switch 36 roller at the corresponding position, as the motions continue, under the action of the α wedge surface, the lever of the pumping stop position switch 36 gradually and smoothly presses the switching of the pumping stop position switch 36, when the end section of the α wedge surface reaches the roller position of the pumping stop position switch 36, the corresponding control, motor loop power supply, motor stopping, and simultaneously sending a switching signal reaching the pumping stop position. In the process, the ball screw pair 24 in the first adjusting device 4 descends, the ball screw pair 24 in the second adjusting device 7 and the third adjusting device 10 ascends, and the difference is that an alpha wedge surface on the right side surface of the travel switch control cam 38 is used for switching an ascending stop position switch; the stop position switch is specifically: the pumping stop position switch in the second adjusting device 7 and the closing stop position switch 63 in the third adjusting device 9 are required to be explained, wherein the space arrangement of the descending stop position switch and the ascending stop position switch has a height difference, and the height difference corresponds to the alpha wedge surfaces on the two side surfaces of the travel switch control cam 38, and the operation process motion control and position signal conversion principles of the rest commands are the same.

The operation mechanism safety switch operation process comprises the following steps:

taking the example of electric operation cut into the pumping station, if the pumping stop position switch 36 in the first adjusting device 4 and the pumping stop position switch 36 in the second adjusting device 7 are simultaneously failed, the motor common to the first reduction gearbox 2 (A phase) and the second reduction gearbox 6 (B phase) will not stop rotating after reaching the pumping working position, the ball screw pair 24 in the first adjusting device 4 continues to move downwards, the ball screw pair 24 in the second adjusting device 7 continues to move upwards until the ball screw pair 24 in the first adjusting device 4 which moves downwards drives the travel switch control cam 38 to completely switch the pumping side safety position switch 37 in the first adjusting device 4 to the right side beta wedge surface thereof, or the ball screw pair 24 in the second adjusting device which moves upwards drives the travel switch control cam 38 to completely switch the pumping side safety position switch 37 in the second adjusting device to the left side beta wedge surface thereof,

at this time, the control circuit and the motor circuit of the control system are forcibly cut off, the motor is stopped, and the movement of the mechanism is stopped, so that the damage to equipment after out of control is avoided.

According to a second aspect of the present invention, there is provided an operating method, which is performed by using the above-mentioned operating mechanism, comprising:

step one: receiving a task instruction; the control system is electrically connected with the first operating device, the second operating device and the third operating device on one hand, and is connected with the main control room through signals on the other hand, and when the main control room gives a task instruction, the control system controls the first operating device, the second operating device and the third operating device to start operation according to the received task instruction.

Step two: determining a working device according to the task instruction; the task instructions comprise a water pumping instruction, a water pumping isolation instruction, a power generation instruction and a power generation isolation instruction, and corresponding operation devices are selected to perform phase sequence conversion according to different received task instructions; for example, when the received task instruction is a water pumping instruction, selecting the first, second and third operating devices to operate simultaneously, wherein the first and second operating devices operate synchronously, and the third operating device operates independently; when a water pumping isolation instruction is received, the first and second operation devices reach an isolation position at the same time, the indication nameplates on the first and second operation devices point to the isolation nameplates, the third operation device reaches a brake separating position, and the indication nameplates on the third operation device point to the brake separating nameplates; after receiving a power generation instruction, the first and second operating devices move from isolation to a power generation position, the indication nameplates on the first and second operating devices point to the power generation nameplates, the third operating device moves to a closing position, and the indication nameplates on the third operating device point to the closing nameplates; when receiving the power generation-isolation instruction, the first and second operating devices reach the isolation position from the water pumping position, and the third operating device reaches the brake separating position.

Step three: selecting a corresponding mode to perform operation according to the determined operation device; according to the selected operation device, a corresponding operation mode is selected, and the operation modes comprise electric operation and manual operation.

Therefore, the embodiment provides the phase-change isolating switch mechanism, which can not only mechanically complete A, B phase synchronization and reverse action, but also accurately and reliably send out a position signal after reaching a preset position, and simultaneously has perfect electrical error prevention function, thereby meeting the requirement of a novel intensive type reversing isolating switch with three poles on the mechanical interlocking function in the phase sequence conversion process, and simultaneously strictly proving links such as mechanism material selection, technology and the like, and having the requirements of an operating mechanism for the phase-change isolating switch with high reliability, high parameters and high cost performance.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A commutation disconnector operating mechanism, comprising: the device comprises a first operating device, a second operating device, a third operating device and a control system, wherein the first operating device and the second operating device are respectively arranged at two ends of a bottom frame, a driving device is arranged in the middle of the bottom frame, and the driving device is in transmission connection with the first operating device and the second operating device through a transmission device;

the first operating device, the second operating device and the third operating device are electrically connected with the control system, and when the control system receives a task instruction, the transmission device drives the first operating device and the second operating device to synchronously operate so as to switch any two-phase sequence of the main circuit.

2. The operating mechanism according to claim 1, wherein the first and second operating devices are vertically installed at two ends of the top of the chassis, the transmission device comprises a reversing gear box (14), and the driving device is arranged at the edge of the top of the chassis and is positioned at one side outside the reversing gear box (14);

a first output bevel gear (48), an electric side drive bevel gear (49), a second output bevel gear (50) and a manual side drive bevel gear (51) are respectively arranged on the periphery of the inner side of the reversing gear box (14), and the electric side drive bevel gear (49) and the manual side drive bevel gear (51) are in meshed connection with the first output bevel gear (48) and the second output bevel gear (50);

the driving end of the driving device is fixedly connected with the electric side driving bevel gear (49), and the first output bevel gear (48) and the second output bevel gear (50) are respectively and fixedly connected with the first operating device and the second operating device through connecting rods (5).

3. The operating mechanism according to claim 2, wherein the first operating device and the second operating device respectively comprise a first reduction gearbox (2) and a second reduction gearbox (6), and a first adjusting device (4) and a second adjusting device (7) are respectively vertically arranged at the top of the first reduction gearbox (2) and the second reduction gearbox (6);

the first reduction gearbox (2) and the second reduction gearbox (6) are respectively provided with a first steering transmission device and a second steering transmission device, the first steering transmission device is fixedly connected with a second output bevel gear (50), the second steering transmission device is fixedly connected with a first output bevel gear (48), and the first steering transmission device and the second steering transmission device are connected with a first adjusting device (4) and a second adjusting device (7) through a reduction unit.

4. The operating mechanism according to claim 3, wherein the first adjusting device (4) and the second adjusting device (7) have the same structure, the first adjusting device (4) comprises a bracket (16), two ends of the bracket (16) are fixedly connected through a ball screw pair (24), a tapered roller bearing (23) is sleeved at the end part of the ball screw pair (24) close to the first reduction gearbox (2), and the tapered roller bearing (23) is fixedly connected with the first steering transmission device through a reduction unit.

5. The operating mechanism according to claim 4, wherein a guide assembly (25) is screwed on the outer side of the ball screw pair (24), the guide assembly (25) is slidably connected in a bracket (16), and a travel switch and an auxiliary switch assembly (17) are respectively arranged on two opposite sides of the bracket (16) at intervals in sequence;

the movable groove and the indication nameplate are respectively arranged on the inner bottom surface of the bracket (16), the indication nameplate is sequentially arranged on one side of the movable groove at intervals and corresponds to the travel switch and the auxiliary switch assembly (17), and the bottom of the guide assembly (25) is fixedly connected with the finger plate (18);

when the two ends of the guide assembly (25) slide in the bracket (16) to be matched with the travel switch and the auxiliary switch assembly (17) at different positions, the finger plate (18) points to the indication nameplate corresponding to the positions of the travel switch and the auxiliary switch assembly (17).

6. The operating mechanism according to claim 5, wherein both ends of the bracket (16) are fixedly connected with a first bearing cover (22) and a second bearing cover (26), respectively, and both ends of the ball screw pair (24) are rotatably connected to the first bearing cover (22) and the second bearing cover (26), respectively;

through holes are formed in two ends of the first bearing cover (22), push rods (27) are further arranged on the guide assembly (25), and the end portions of the two push rods (27) penetrate through the through holes and extend outwards.

7. The operating mechanism according to claim 5, wherein the guide assembly (25) comprises a fixed block (28), the fixed block (28) is sleeved on the outer side of the ball screw pair (24), and a travel switch driving plate (29) and an auxiliary switch driving plate (33) are respectively arranged on two sides of the fixed block (28);

one end of the travel switch driving plate (29) and one end of the auxiliary switch driving plate (33) which are far away from the fixed block (28) are respectively provided with a travel switch control cam (38) and a roller (31), and the travel switch control cam (38) and the roller (31) are respectively matched with the travel switch and the auxiliary switch assembly (17).

8. The operating mechanism of claim 1, wherein the first operating device, the second operating device and the third operating device are all identical in structure.

9. A method of operation, the method being performed using the operating mechanism of any one of claims 1-8, comprising:

receiving a task instruction;

determining a working device according to the task instruction;

and selecting a corresponding mode to perform the operation according to the determined operation device.

10. The method of claim 9, wherein the task instruction specifically includes: pumping instructions, generating instructions and isolating instructions.