Locking control system and method for fan impeller, and fan

Abstract

The application provides a locking control system and method of a fan impeller and a fan. The fan comprises a locking disc, a gear box and a locking pin. The locking disc is connected with the gear box, and the gear box is used for driving the locking disc to rotate. The locking pin is used for cooperating with a positioning hole of the locking disc to realize positioning of the locking disc. The system comprises a driving part and a controller. The driving part is connected with the controller. When the fan impeller is in a static state, the controller controls the driving part to cooperate with the gear box and drives the gear box to rotate, so as to realize alignment of the positioning hole and the locking pin. By arranging the active driving device, the unit in a shutdown maintenance state or a fault state can be actively rotated, the relative position of the locking pin and the positioning hole is adjusted, the locking pin and the positioning hole are quickly aligned, and the problem that the locking pin needs to be aligned by restarting the unit in the shutdown state is avoided.

Description

Technical Field

[0001] This invention relates to the field of energy equipment technology, and in particular to a locking control system, control method and fan for a wind turbine impeller. Background Technology

[0002] Currently, when performing blade or hub maintenance on wind turbines, it is necessary to lock the rotor. During locking, the maintenance locking pin is extended and inserted into the locking pin hole of the locking disc to secure the hub. The hub rotates slightly under natural conditions, requiring manual observation to align the locking pin with the locking hole, apply the brakes, and extend the locking pin again. Due to the time intervals between manual operations, the success rate of locking pin alignment is low, requiring multiple repetitions. If the wind turbine is in a shutdown maintenance state or in a fault state, and the locking pin is not aligned with the positioning hole, manual rotation or propeller opening is required to continue rotation. The shutdown process must then be repeated until alignment is achieved. Summary of the Invention

[0003] This invention provides a locking control system for a wind turbine impeller to address the shortcomings of existing methods that rely solely on manual alignment during shutdown and that only apply to automatic alignment during shutdown. These methods fail to achieve automatic alignment when the unit is permanently shut down or cannot be started. By incorporating an active drive device, the system enables the unit to rotate actively during maintenance or malfunction, adjusting the relative position of the locking pin and the positioning hole. This achieves rapid alignment of the locking pin and the positioning hole, preventing the inability to restart the unit during shutdown or malfunctions.

[0004] This invention also provides a locking control method for a wind turbine impeller, which addresses the shortcomings of existing methods that rely solely on manual alignment during shutdown and that only apply to automatic control during shutdown. These methods fail to achieve automatic alignment when the unit is in a prolonged shutdown state or cannot be started. By acquiring relevant parameters of the wind turbine impeller, the method enables active adjustment of the relative position of the locking pin and positioning hole after the unit stops, even if they are not aligned. This allows for rapid alignment of the locking pin and positioning hole, preventing the inability to achieve locking pin alignment by restarting the unit during shutdown or in the event of a malfunction.

[0005] The present invention also provides a fan.

[0006] According to a first aspect of the present invention, a locking control system for a fan impeller is provided, wherein the fan includes: a locking disc, a gearbox, and a locking pin;

[0007] The locking disc is connected to the gearbox, and the gearbox is used to drive the locking disc to rotate.

[0008] The locking pin is used to cooperate with the positioning hole of the locking disc to realize the positioning of the locking disc.

[0009] The system comprises a driving part and a controller.

[0010] The driving part is connected with the controller.

[0011] When the fan impeller is in a static state, the controller controls the driving part to cooperate with the gear box and drives the gear box to rotate, so as to realize the alignment of the positioning hole and the locking pin.

[0012] According to an embodiment of the present application, the driving part comprises a driving gear, an electric unit and a driving assembly.

[0013] The driving gear is connected with the electric unit.

[0014] The electric unit is connected with the driving assembly.

[0015] The electric unit and the driving assembly are respectively connected with the controller.

[0016] The controller controls the driving assembly to drive the electric unit to move, so as to realize the meshing of the driving gear and the driven gear of the gear box.

[0017] The controller controls the electric unit to act, so as to realize the rotation of the gear box to drive the locking disc through the meshing of the driving gear and the driven gear.

[0018] Specifically, the embodiment provides an embodiment of the driving part, by arranging the driving gear, the electric unit and the driving assembly, the active adjustment of the electric unit is realized, when the locking pin and the positioning hole of the locking disc need to be aligned, the controller controls the driving assembly to move the electric unit to a predetermined position, the driving gear at the front end of the electric unit meshes with the driven gear of the gear box, and then the electric unit is controlled to act, so as to realize the rotation of the output shaft of the gear box driven by the electric unit, and then the alignment of the locking pin and the positioning hole is realized.

[0019] According to an embodiment of the present application, the driving assembly comprises a hydraulic cylinder, a hydraulic pump, an oil tank and a solenoid valve.

[0020] The piston rod of the hydraulic cylinder is connected with the electric unit.

[0021] The hydraulic pump and the oil tank are respectively communicated with the rod cavity and the rodless cavity of the hydraulic cylinder through the solenoid valve.

[0022] The solenoid valve is connected with the controller.

[0023] Specifically, the embodiment provides an implementation of a driving assembly, a hydraulic cylinder, a hydraulic pump, an oil tank and a solenoid valve are arranged to form a hydraulic circuit for driving the movement of the electric unit, and the electric unit is quickly moved through the hydraulic system during the alignment of the locking pin and the positioning hole, so that the quick adjustment requirement of the alignment of the locking pin and the positioning hole during shutdown is met.

[0024] According to an embodiment of the present application, further comprising: a first limiting piece, a second limiting piece, a first sensor and a second sensor;

[0025] The first limiting piece and the second limiting piece are arranged on the locking disc respectively, and the first limiting piece is arranged at the front end of the locking disc in the rotating direction of the locking disc relative to the second limiting piece;

[0026] The first sensor is connected with the controller and is used for sensing the first limiting piece;

[0027] The second sensor is connected with the controller and is used for sensing the second limiting piece;

[0028] The first sensor senses the first limiting piece, and at least the controller controls the deceleration of the driving part to realize the deceleration of the locking disc;

[0029] The second sensor senses the second limiting piece, and the controller controls the braking of the driving part to realize the alignment of the locking pin and the positioning hole.

[0030] Specifically, the embodiment provides an implementation of a first limiting piece, a second limiting piece, a first sensor and a second sensor, the first limiting piece and the second limiting piece are arranged to realize the marking of the rotating angle of the locking disc, and the first sensor and the second sensor are arranged to sense the first limiting piece and the second limiting piece.

[0031] According to an embodiment of the present application, further comprising: a brake valve, the brake valve is connected with the output shaft of the gear box and the controller respectively, and is used for realizing the deceleration and braking of the locking disc under the control of the controller.

[0032] Specifically, the embodiment provides an implementation of a brake valve, the brake valve is arranged to realize the deceleration and braking of the locking disc, so that the controller can realize the deceleration and braking of the side of the output shaft of the gear box through the brake valve while controlling the deceleration and braking of the driving part, and the quick alignment between the locking pin and the positioning hole is ensured.

[0033] According to an embodiment of the present application, further comprising: a first switch, a second switch and a third switch;

[0034] The first switch is a trigger switch of the first sensor, and the closed state of the first switch corresponds to the first sensor sensing the first limit piece;

[0035] The second switch is a trigger switch of the second sensor, and the closed state of the second switch corresponds to the second sensor sensing the second limit piece;

[0036] The third switch is connected with the controller, and the closed state of the third switch corresponds to the controller monitoring that the rotating speed of the output shaft of the gear box meets a preset rotating speed and sending a closed signal;

[0037] The first switch, the second switch, the third switch and the brake valve are arranged in series.

[0038] Specifically, the embodiment provides an implementation of the first switch, the second switch and the third switch, and the series arrangement of the first switch, the second switch, the third switch and the brake valve provides guarantee for braking of the locking disc, and avoids misoperation of the driving part or the brake valve caused by signal interference.

[0039] According to an implementation of the embodiment, the maintenance switch is arranged between the driving part and the controller.

[0040] Specifically, the embodiment provides an implementation of the maintenance switch, and when maintenance is needed, the controller controls the driving part by closing the maintenance switch, so that the controller does not send a start signal to the driving part when the unit is in a stationary state and the locking pin is not aligned with the positioning hole.

[0041] According to an implementation of the embodiment, the maintenance switch is arranged in series with the first switch, the second switch, the third switch and the brake valve.

[0042] Specifically, the embodiment provides another implementation of the maintenance switch, and the series arrangement of the maintenance switch with the first switch, the second switch, the third switch and the brake valve forms safety protection for the brake valve, and avoids problems such as speed reduction of the output shaft of the gear box, positioning of the locking pin and the positioning hole, and damage of the driving part caused by misoperation of the brake valve.

[0043] According to an implementation of the embodiment, the maintenance switch is arranged in series with the first switch, the second switch, the third switch and the brake valve.

[0044] The overspeed relay is connected with the output shaft of the gear box, and is used for monitoring the rotating speed of the output shaft of the gear box.

[0045] The fourth switch is a trigger switch of the overspeed relay and is connected in parallel with the third switch.

[0046] The closing state of the fourth switch corresponds to the overspeed relay monitoring that the rotating speed of the gearbox output shaft meets a preset rotating speed.

[0047] Specifically, the embodiment provides an implementation of an overspeed relay and a fourth switch, and the overspeed relay and the fourth switch are arranged to realize a safe redundant design of a system, when a controller fails to send a closing signal in time, the fourth switch connected in parallel with the third switch is closed to realize conduction of a brake valve control path, and the timely braking of the gearbox output shaft through the brake valve is ensured, and the accuracy of the alignment of the locking pin and the positioning hole is ensured.

[0048] According to an implementation of the embodiment, the system further comprises a third sensor connected to the controller and configured to monitor the blade angle of the fan.

[0049] Specifically, the embodiment provides an implementation of monitoring the blade angle through a third sensor, and the third sensor configured to monitor the blade angle is arranged to enable the active driving of the gearbox by the driving part to be associated with the rotating speed, the blade angle and the unit state, and the rotating speed, the blade angle and the unit state can all participate in the corresponding positioning control of the locking disc, and when the rotating speed of the main shaft is too high or in a non-maintenance state, the system does not work, and accidents are avoided.

[0050] According to the control method of the fan impeller locking control system provided by the second aspect of the embodiment, the method comprises the following steps.

[0051] In response to a start signal, an operating parameter of a fan impeller and a first position parameter between a positioning hole of a locking disc and a locking pin are acquired.

[0052] According to the operating parameter and the first position parameter, it is determined that the fan impeller is in a static state and the positioning hole and the locking pin are in a misaligned state, and then the locking disc is driven to rotate through a gearbox.

[0053] A second position parameter between the positioning hole and the locking pin is continuously acquired.

[0054] According to the second position parameter, it is determined that the positioning hole and the locking pin are aligned, and then a stop instruction is sent.

[0055] According to an implementation of the embodiment, in the step of determining that the fan impeller is in a static state and the positioning hole and the locking pin are in a misaligned state, the locking disc is driven to rotate through a gearbox, the step further comprises the following steps.

[0056] acquire a third position parameter between the positioning hole and the lock pin, and judge according to the third position parameter;

[0057] When it is determined that the relative position between the positioning hole and the lock pin meets a preset deceleration condition, deceleration of the locking disc is realized at least through the gear box.

[0058] Specifically, the embodiment provides an implementation of driving the gear box to rotate, so that when the preset deceleration condition is met, deceleration can be performed according to the acquisition and judgment of the third position parameter between the positioning hole and the lock pin, and when the relative position between the positioning hole and the lock pin meets alignment, timely braking can be ensured.

[0059] It should be noted that when the first sensor senses the first limiting sheet, it is indicated that the relative position between the lock pin and the positioning hole is relatively close, deceleration can be performed, and timely braking can be ensured when the lock pin and the positioning hole are aligned.

[0060] According to an implementation of the present application, the start signal is a maintenance signal.

[0061] Specifically, the embodiment provides an implementation of a start signal, and the maintenance switch is closed as the start signal, so that the controller starts to acquire unit-related parameters after receiving the start signal, and then when the unit is shut down and the lock pin and the positioning hole are not aligned, the controller controls the driving part to realize rapid alignment of the lock pin and the positioning hole.

[0062] According to the third aspect of the present application, a fan is provided, which has the locking control system of the fan blade wheel or uses the locking control method of the fan blade wheel when the positioning hole of the fan blade wheel is aligned with the lock pin.

[0063] The above one or more technical solutions in the present application have at least one of the following technical effects: the locking control system of the fan blade wheel, the control method and the fan provided by the present application can make the unit in a shutdown maintenance state or a fault state rotate actively, adjust the relative position of the lock pin and the positioning hole, realize rapid alignment of the lock pin and the positioning hole, and avoid the problem that the lock pin needs to be aligned after the unit is restarted in a shutdown state.

[0064] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0065] In order to make the technical solutions in the present application or prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0066] Figure 1 is one of the schematic diagrams of the arrangement relationship of the locking control system of the fan impeller provided by the present application;

[0067] Figure 2 is the second schematic diagram of the arrangement relationship of the locking control system of the fan impeller provided by the present application;

[0068] Figure 3 is the third schematic diagram of the arrangement relationship of the locking control system of the fan impeller provided by the present application;

[0069] Figure 4 is the flowchart of the locking control method of the fan impeller provided by the present application.

[0070] Reference signs:

[0071] 10, locking disc; 11, positioning hole;

[0072] 20, gear box; 21, driven gear;

[0073] 30, locking pin;

[0074] 40, controller; 41, third switch;

[0075] 50, driving gear; 51, electric unit; 52, mounting seat; 53, hydraulic cylinder; 54, hydraulic pump; 55, oil tank; 56, electromagnetic valve;

[0076] 60, first limiting piece; 61, first sensor; 62, first switch;

[0077] 70, second limiting piece; 71, second sensor; 72, second switch;

[0078] 80, brake valve;

[0079] 90, maintenance switch;

[0080] 100, overspeed relay; 101, fourth switch;

[0081] 110, third sensor. DETAILED DESCRIPTION

[0082] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0083] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0084] In some specific embodiments of the present application, as shown in Figures 1 to 3 The system comprises: a driving part and a controller 40; the driving part is connected with the controller 40; in the stationary state of the fan impeller, the controller 40 controls the driving part to cooperate with the gear box 20 and drives the gear box 20 to rotate, so as to realize the alignment of the positioning hole 11 and the locking pin 30.

[0085] In detail, the present application provides a locking control system for a fan impeller, which solves the problem that the existing stop state can only rely on manual operation for alignment, and the existing automatic control method is only suitable for controlling alignment during the execution of stop, and when the unit is in a long-term stop state or the unit cannot start, the automatic alignment operation of the locking pin cannot be realized. By setting a driving device, the unit in a stop maintenance state or a fault state can be actively rotated to adjust the relative position of the locking pin 30 and the positioning hole 11, realize the rapid alignment of the locking pin 30 and the positioning hole 11, and avoid the problem that the locking pin 30 alignment cannot be realized by restarting the unit when the unit is in a stop state or a fault state and cannot start.

[0086] It should be noted that the stationary state of the fan impeller includes the stop state of the fan impeller and the fault maintenance state of the fan.

[0087] In some possible embodiments of the present application, the driving part comprises: a driving gear 50, an electric unit 51 and a driving assembly; the driving gear 50 is connected with the electric unit 51; the electric unit 51 is connected with the driving assembly; the electric unit 51 and the driving assembly are respectively connected with the controller 40; wherein the controller 40 controls the driving assembly to drive the electric unit 51 to move, so as to realize the engagement of the driving gear 50 with the driven gear 21 of the gear box 20; the controller 40 controls the electric unit 51 to act, so as to realize the rotation of the gear box 20 to drive the locking disc 10 through the engagement of the driving gear 50 and the driven gear 21.

[0088] Specifically, the present embodiment provides an implementation of the driving part, which realizes the active adjustment of the electric unit 51 by arranging the driving gear 50, the electric unit 51 and the driving assembly.

[0089] In possible implementations, the driving part further comprises: a mounting seat 52, the electric unit 51 is arranged on the mounting seat 52, the mounting seat 52 is connected with the driving assembly, the controller 40 controls the driving assembly to drive the mounting seat 52 to move, so as to realize the engagement of the driving gear 50 with the driven gear 21 of the gear box 20; when the locking pin 30 and the positioning hole 11 of the locking disc 10 need to be aligned, the controller 40 controls the driving assembly to move the mounting seat 52 to a predetermined position, the driving gear 50 at the front end of the electric unit 51 is engaged with the driven gear 21 of the gear box 20, and then the electric unit 51 is controlled to act, so as to realize the rotation of the output shaft of the gear box 20 driven by the electric unit 51, and further realize the alignment of the locking pin 30 and the positioning hole 11.

[0090] In possible implementations, the electric unit 51 is a motor.

[0091] In possible implementations, after the controller 40 controls the driving part to realize the alignment of the locking pin 30 and the positioning hole 11, the locking pin 30 is extended by manual or automatic mode, so as to realize the cooperation with the positioning hole 11, and further realize the locking of the locking disc 10.

[0092] In possible implementations, the judgment of the relative position between the locking pin 30 and the positioning hole 11 by the controller 40, and the control of the driving part to drive the gear box 20 to rotate are all automatically realized without human intervention, and only the corresponding alignment or starting signal needs to be sent, and then the controller 40 automatically acquires and judges the related parameters and information.

[0093] In some possible embodiments of the present application, the driving assembly comprises: a hydraulic cylinder 53, a hydraulic pump 54, an oil tank 55 and an electromagnetic valve 56; the piston rod of the hydraulic cylinder 53 is connected with the electric unit 51; the hydraulic pump 54 and the oil tank 55 are respectively communicated with the rod cavity and the rodless cavity of the hydraulic cylinder 53 through the electromagnetic valve 56; the electromagnetic valve 56 is connected with the controller 40.

[0094] Specifically, the embodiment provides an implementation of a driving assembly, a hydraulic circuit for driving the movement of the electric unit 51 is formed by arranging a hydraulic cylinder 53, a hydraulic pump 54, an oil tank 55 and a solenoid valve 56, and the fast movement of the electric unit 51 is realized by the hydraulic system during the alignment of the locking pin 30 and the positioning hole 11, so that the fast adjustment requirement of the alignment of the locking pin 30 and the positioning hole 11 during shutdown is met.

[0095] In a possible implementation, the solenoid valve 56 is a two-position two-way valve, which is connected with the rod cavity and the rodless cavity of the hydraulic cylinder 53 respectively, and the adjustment of different working positions of the solenoid valve 56 is realized by the control of the controller 40, so that the corresponding hydraulic passage of the hydraulic oil in the hydraulic cylinder 53 between the hydraulic pump 54 and the oil tank 55 is formed.

[0096] In a possible implementation, the driving assembly further comprises a piston limit switch, the stroke of the hydraulic cylinder 53 is more accurately measured by the arrangement of the piston limit switch, so that the accurate meshing of the driving gear 50 and the driven gear 21 is ensured, and the corresponding hidden danger caused by the over-limit movement of the hydraulic cylinder 53, the sudden increase of pressure and the fast movement of the electric unit 51 is avoided.

[0097] In some possible embodiments of the application, the first limit piece 60, the second limit piece 70, the first sensor 61 and the second sensor 71 are further included; the first limit piece 60 and the second limit piece 70 are arranged on the locking disc 10 respectively, and the first limit piece 60 is arranged at the front end of the locking disc 10 in the rotating direction of the locking disc 10; the first sensor 61 is connected with the controller 40 and is used for sensing the first limit piece 60; the second sensor 71 is connected with the controller 40 and is used for sensing the second limit piece 70; wherein the first sensor 61 senses the first limit piece 60, at least corresponding to the controller 40 controlling the deceleration of the driving part, so as to realize the deceleration of the locking disc 10; the second sensor 71 senses the second limit piece 70, corresponding to the controller 40 controlling the braking of the driving part, so as to realize the alignment of the locking pin 30 and the positioning hole 11.

[0098] Specifically, the embodiment provides an implementation of the first limit piece 60, the second limit piece 70, the first sensor 61 and the second sensor 71, the rotation angle of the locking disc 10 is marked by arranging the first limit piece 60 and the second limit piece 70, and the first limit piece 60 and the second limit piece 70 can be sensed by arranging the first sensor 61 and the second sensor 71.

[0099] In possible implementation manners, the first limit piece 60 is a deceleration mark, when the first sensor 61 senses the first limit piece 60, the relative position between the mark lock pin 30 and the positioning hole 11 has been relatively close, at this time, the controller 40 at least controls the driving part to decelerate, thereby realizing the deceleration of the locking disc 10.

[0100] In possible implementation manners, the second limit piece 70 is a braking mark, when the second sensor 71 senses the second limit piece 70, the mark lock pin 30 and the positioning hole 11 have reached the aligned position, at this time, the controller 40 controls the driving part to brake, thereby realizing the rapid positioning between the lock pin 30 and the positioning hole 11.

[0101] In possible implementation manners, the first sensor 61 and the second sensor 71 are any one or a combination of several of proximity switches, magnetic switches, distance sensors, and mechanical switches.

[0102] In some possible embodiments of the present application, further comprising: a brake valve 80, the brake valve 80 is connected with the output shaft of the gear box 20 and the controller 40 respectively, for realizing the deceleration and braking of the locking disc 10 under the control of the controller 40.

[0103] Specifically, the embodiment provides an implementation manner of the brake valve 80, by arranging the brake valve 80, the deceleration and braking of the locking disc 10 are realized, so that the controller 40 can realize the deceleration and braking of the output shaft side of the gear box 20 through the brake valve 80 while controlling the driving part to decelerate and brake, thereby ensuring the rapid alignment between the lock pin 30 and the positioning hole 11.

[0104] In possible implementation manners, the brake valve 80 comprises a first valve body and a second valve body, the first valve body is used to realize the deceleration of the output shaft of the gear box 20, and the second valve body is used to realize the braking of the output shaft of the gear box 20.

[0105] In possible implementation manners, the brake valve 80 is a valve body, under the control of the controller 40, in the process of deceleration, the brake valve 80 is used for pressure deceleration, and in the process of braking, the brake valve 80 is used for full-pressure braking.

[0106] In possible implementation manners, the brake valve 80 is a high-speed shaft original braking device of the gear box connected with the impeller.

[0107] In some possible embodiments of the present application, the first switch 62, the second switch 72 and the third switch 41 are further included; the first switch 62 is a trigger switch of the first sensor 61, and the closed state of the first switch 62 corresponds to the first sensor 61 sensing the first limit piece 60; the second switch 72 is a trigger switch of the second sensor 71, and the closed state of the second switch 72 corresponds to the second sensor 71 sensing the second limit piece 70; the third switch 41 is connected with the controller 40, and the closed state of the third switch 41 corresponds to the controller 40 monitoring that the rotating speed of the output shaft of the gearbox 20 meets the preset rotating speed and sending a closed signal; wherein the first switch 62, the second switch 72, the third switch 41 and the brake valve 80 are arranged in series.

[0108] Specifically, the present embodiment provides an implementation of the first switch 62, the second switch 72 and the third switch 41, and the series arrangement of the first switch 62, the second switch 72, the third switch 41 and the brake valve 80 provides a guarantee for the braking of the locking disc 10, avoiding the misoperation of the driving part or the brake valve 80 due to signal interference.

[0109] In possible implementations, relays or contactors corresponding to the first switch 62, the second switch 72 and the third switch 41 are further arranged in the corresponding control circuits of the first sensor 61, the second sensor 71 and the controller 40, and the first switch 62, the second switch 72 and the third switch 41 are closed by monitoring the corresponding trigger signals.

[0110] In some possible embodiments of the present application, the maintenance switch 90 is further included, and the maintenance switch 90 is arranged between the driving part and the controller 40.

[0111] Specifically, the present embodiment provides an implementation of the maintenance switch 90, and the maintenance switch 90 is arranged to close the maintenance switch 90 when maintenance is needed, so that the controller 40 controls the driving part, avoiding the situation that the controller 40 sends a start signal to the driving part when the unit is in a stationary state and the locking pin 30 is not aligned with the positioning hole 11.

[0112] In some possible embodiments of the present application, the maintenance switch 90 is arranged in series with the first switch 62, the second switch 72, the third switch 41 and the brake valve 80.

[0113] Specifically, the embodiment provides another implementation of the maintenance switch 90, and the maintenance switch 90 is arranged in series with the first switch 62, the second switch 72, the third switch 41 and the brake valve 80, so that safety protection of the brake valve 80 is formed, and problems such as reduction of the output shaft of the gearbox 20, failure of the locking pin 30 to be positioned in the positioning hole 11, and damage of the driving part caused by misoperation of the brake valve 80 are avoided.

[0114] In some possible embodiments of the present application, the system further comprises an overspeed relay 100 and a fourth switch 101; the overspeed relay 100 is connected with the output shaft of the gearbox 20 and is used for monitoring the rotating speed of the output shaft of the gearbox 20; the fourth switch 101 is a trigger switch of the overspeed relay 100 and is connected in parallel with the third switch 41; and the closed state of the fourth switch 101 corresponds to that the overspeed relay 100 monitors that the rotating speed of the output shaft of the gearbox 20 meets a preset rotating speed.

[0115] Specifically, the embodiment provides an implementation of the overspeed relay 100 and the fourth switch 101, and the arrangement of the overspeed relay 100 and the fourth switch 101 realizes the safety redundant design of the system; when the controller 40 fails to send a closed signal in time, the fourth switch 101 connected in parallel with the third switch 41 is closed, the control path of the brake valve 80 is turned on, the timely braking of the output shaft of the gearbox 20 through the brake valve 80 is ensured, and the accuracy of the alignment of the locking pin 30 and the positioning hole 11 is ensured.

[0116] In some possible embodiments of the present application, the system further comprises a third sensor 110, which is connected with the controller 40 and is used for monitoring the blade angle of the fan.

[0117] Specifically, the embodiment provides an implementation of monitoring the blade angle through the third sensor 110, and the third sensor 110 arranged for monitoring the blade angle is used to associate the active driving of the driving part to the rotating speed, the blade angle and the state of the unit, so that the rotating speed, the blade angle and the state of the unit can all participate in the corresponding positioning control of the locking disc 10; when the rotating speed of the main shaft is too high or the state is not in maintenance, the system does not work, and accidents are avoided.

[0118] In possible implementations, the third sensor 110 is any one of a proximity switch, a magnetic switch, a distance sensor and a mechanical type forming switch.

[0119] In some specific embodiments of the present application, as shown in Figures 1 to 4 The control method of the fan impeller locking control system comprises the following steps:

[0120] In response to the start signal, an operating parameter of the fan impeller is acquired, and a first position parameter between the positioning hole 11 of the locking disc 10 and the locking pin 30 is acquired;

[0121] According to the operating parameter and the first position parameter, it is determined that the fan impeller is in a stationary state and that the positioning hole 11 and the locking pin 30 are in a misaligned state, and then the locking disc 10 is driven to rotate by the gear box 20;

[0122] The second position parameter between the positioning hole 11 and the locking pin 30 is continuously acquired;

[0123] According to the second position parameter, it is determined that the positioning hole 11 and the locking pin 30 are aligned, and then a stop instruction is sent.

[0124] In detail, the application further provides a locking control method for a fan impeller, which solves the defects that the existing stop state can only rely on manual operation for alignment, and the existing automatic control method is only suitable for controlling alignment during execution of stop, and when a unit is in a long-term stop state or the unit cannot be started, automatic alignment of the locking pin cannot be achieved. By acquiring relevant parameters of the fan impeller, when the locking pin and the positioning hole are misaligned after the unit is stopped, active adjustment of the relative position of the locking pin and the positioning hole can be performed, rapid alignment of the locking pin and the positioning hole can be achieved, and the problem that the locking pin cannot be aligned by restarting the unit when the unit is in a stop state or fails to start can be avoided.

[0125] The application solves the defect that the locking pin 30 needs to be restarted to achieve alignment in the prior art. By acquiring relevant parameters of the fan impeller, when the locking pin 30 and the positioning hole 11 are misaligned after the unit is stopped, active adjustment of the relative position of the locking pin 30 and the positioning hole 11 can be performed, rapid alignment of the locking pin 30 and the positioning hole 11 can be achieved, and the problem that the locking pin 30 and the positioning hole 11 can be aligned only by restarting the unit multiple times can be avoided.

[0126] In a possible implementation, when it is determined that the fan impeller is in a stationary state and that the positioning hole 11 and the locking pin 30 are in a misaligned state, a driving instruction is sent to a driving part, and the driving part is connected with the gear box 20 to drive the gear box 20 to rotate.

[0127] In some possible embodiments of the application, when it is determined that the fan impeller is in a stationary state and that the positioning hole 11 and the locking pin 30 are in a misaligned state, the step of driving the locking disc 10 to rotate by the gear box 20 specifically further includes:

[0128] A third position parameter between the positioning hole 11 and the locking pin 30 is acquired, and the third position parameter is used for judgment;

[0129] When it is determined that the relative position between the positioning hole 11 and the locking pin 30 meets a preset deceleration condition, the deceleration of the locking disc 10 is realized at least through the gear box 20.

[0130] In some possible embodiments of the present application, when it is determined that the fan impeller is in a static state and the relative position between the positioning hole 11 and the locking pin 30 is in a misalignment state, the step of driving the locking disc 10 to rotate through the gear box 20 further comprises the following steps in particular:

[0131] A third position parameter between the positioning hole 11 and the locking pin 30 is obtained, and a judgment is made according to the third position parameter.

[0132] When it is determined that the relative position between the positioning hole 11 and the locking pin 30 meets a first preset condition, a boosting signal and a deceleration signal are respectively sent to the brake valve 80 and the driving part, wherein the first preset condition is that the first sensor 61 senses the first limit piece 60.

[0133] Specifically, the present embodiment provides an implementation of driving the gear box 20 to rotate, according to the obtaining and judgment of the third position parameter between the positioning hole 11 and the locking pin 30, so that when the first preset condition is met, the deceleration can be performed, and when the relative position between the positioning hole 11 and the locking pin 30 meets the alignment, the braking can be performed in time.

[0134] It should be noted that when the first sensor 61 senses the first limit piece 60, it indicates that the relative position between the locking pin 30 and the positioning hole 11 is relatively close, and the deceleration can be performed, so that when the locking pin 30 and the positioning hole 11 are aligned, the braking can be performed in time.

[0135] In possible implementations, when the first sensor 61 senses the first limit piece 60, the first switch 62 is triggered to be closed.

[0136] In some possible embodiments of the present application, when it is determined that the positioning hole 11 and the locking pin 30 are aligned, the step of sending a stop instruction comprises the following steps in particular:

[0137] When it is determined that the relative position between the positioning hole 11 and the locking pin 30 meets a second preset condition, a brake signal and a braking signal are respectively sent to the brake valve 80 and the driving part, wherein the second preset condition is that the second sensor 71 senses the second limit piece 70.

[0138] Specifically, the present embodiment provides an implementation of sending a stop instruction, when the relative position between the locking pin 30 and the positioning hole 11 meets the second preset condition, it indicates that the alignment between the locking pin 30 and the positioning hole 11 has been achieved, and the braking of the locking disc 10 needs to be realized through the brake of the brake valve 80 and the braking of the driving part, so as to ensure the alignment between the locking pin 30 and the positioning hole 11.

[0139] In possible embodiments, after the locking disc 10 is braked, the locking pin 30 can be extended by automatic or manual means, and then cooperates with the positioning hole 11 to realize the locking of the locking disc 10.

[0140] In some possible embodiments of the present application, after the step of determining that the positioning hole 11 is aligned with the locking pin 30, the step of sending the stop instruction further comprises:

[0141] After the gear box 20 is braked, a separation signal is sent to the driving part to realize the separation of the driving part and the gear box 20.

[0142] Specifically, the present embodiment provides an embodiment after the step of sending the stop instruction, after the braking is completed, the controller 40 exits the driving part from the meshing with the high-speed shaft brake system through the hydraulic system.

[0143] In possible embodiments, the driving part is independent of the unit high-speed shaft brake device and is locked by the maintenance switch 90, without affecting the normal operation of the unit.

[0144] In some possible embodiments of the present application, the start signal is a maintenance signal sent by closing the maintenance switch 90.

[0145] Specifically, the present embodiment provides an embodiment of the start signal, and the closing of the maintenance switch 90 is taken as the start signal, so that the controller 40 starts to acquire the unit related parameters after receiving the start signal, and then when the unit is stopped and the locking pin 30 is not aligned with the positioning hole 11, the controller 40 realizes the rapid alignment of the locking pin 30 and the positioning hole 11 by controlling the driving part.

[0146] In some specific embodiments of the present application, the present scheme provides a fan with the above-mentioned locking control system of the fan impeller, or executes the above-mentioned locking control method when the positioning hole 11 of the fan impeller is aligned with the locking pin 30.

[0147] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0148] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "aspects", "specific aspects", or "some aspects" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or aspect are included in at least one embodiment or aspect of the embodiments of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or aspect. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or aspects. In addition, different embodiments or aspects described in the specification and the features of different embodiments or aspects can be combined and combined by those skilled in the art without contradiction, and should be covered in the scope of the claims of the present application.

[0149] Finally, it should be noted that: the above embodiments are only used to illustrate the present application, and not to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the scope of the claims of the present application.

Claims

1. A lock control system for a fan impeller, the fan comprising: Locking disc (10), gear box (20) and lock pin (30); The locking disc (10) is connected with the gear box (20), and the gear box (20) is used for driving the locking disc (10) to rotate; The lock pin (30) is used for cooperating with the positioning hole (11) of the locking disc (10) to realize positioning of the locking disc (10); Characterized in that the system comprises a driving part and a controller (40); The driving part is connected with the controller (40); When the fan impeller is in a static state, the controller (40) controls the driving part to cooperate with the gear box (20) and drives the gear box (20) to rotate, so as to realize alignment of the positioning hole (11) and the lock pin (30); The driving part comprises a driving gear (50), an electric unit (51) and a driving assembly; The driving gear (50) is connected with the electric unit (51); The electric unit (51) is connected with the driving assembly; The electric unit (51) and the driving assembly are respectively connected with the controller (40); The controller (40) controls the driving assembly to drive the electric unit (51) to move, so as to realize meshing of the driving gear (50) and a driven gear (21) of the gear box (20); The controller (40) controls the electric unit (51) to act, so as to realize rotation of the gear box (20) driving the locking disc (10) through meshing of the driving gear (50) and the driven gear (21); Further comprising a first limiting piece (60), a second limiting piece (70), a first sensor (61) and a second sensor (71); The first limiting piece (60) and the second limiting piece (70) are both arranged on the locking disc (10), and the first limiting piece (60) is arranged at the front end of the locking disc (10) in the rotating direction relative to the second limiting piece (70); The first sensor (61) is connected with the controller (40) and is used for sensing the first limiting piece (60); The second sensor (71) is connected with the controller (40) and is used for sensing the second limiting piece (70); When the first sensor (61) senses the first limiting piece (60), the controller (40) at least controls the driving part to decelerate, so as to realize deceleration of the locking disc (10); When the second sensor (71) senses the second limiting piece (70), the controller (40) controls the driving part to brake, so as to realize alignment of the lock pin (30) and the positioning hole (11).

2. A locking control system for a fan impeller as defined in claim 1, wherein The driving assembly comprises a hydraulic cylinder (53), a hydraulic pump (54), an oil tank (55) and a solenoid valve (56); The piston rod of the hydraulic cylinder (53) is connected with the electric unit (51); The hydraulic pump (54) and the oil tank (55) are respectively communicated with the rod cavity and the rodless cavity of the hydraulic cylinder (53) through the solenoid valve (56); The solenoid valve (56) is connected with the controller (40).

3. A locking control system for a fan impeller as defined in claim 1, wherein Further comprising: a brake valve (80) connected with the output shaft of the gear box (20) and the controller (40) respectively, for realizing the deceleration and braking of the locking disc (10) under the control of the controller (40).

4. A locking control system for a fan impeller as defined in claim 3, wherein Further comprising: A first switch (62), a second switch (72) and a third switch (41); The first switch (62) is a trigger switch of the first sensor (61), and the closed state of the first switch (62) corresponds to the first sensor (61) sensing the first limit piece (60); The second switch (72) is a trigger switch of the second sensor (71), and the closed state of the second switch (72) corresponds to the second sensor (71) sensing the second limit piece (70); The third switch (41) is connected with the controller (40), and the closed state of the third switch (41) corresponds to the controller (40) monitoring that the rotating speed of the output shaft of the gear box (20) meets the preset rotating speed and sending a closed signal; Wherein, the first switch (62), the second switch (72), the third switch (41) and the brake valve (80) are arranged in series.

5. A locking control system for a fan impeller as defined in claim 4, wherein Further comprising: An overhauling switch (90) arranged between the driving part and the controller (40).

6. A locking control system for a fan impeller as defined in claim 5, wherein The overhauling switch (90) is arranged in series with the first switch (62), the second switch (72), the third switch (41) and the brake valve (80) respectively.

7. A locking control system for a fan impeller as defined in claim 4, wherein Further comprising: An overspeed relay (100) and a fourth switch (101); The overspeed relay (100) is connected with the output shaft of the gear box (20) for monitoring the rotating speed of the output shaft of the gear box (20); The fourth switch (101) is a trigger switch of the overspeed relay (100) and is connected in parallel with the third switch (41); Wherein, the closed state of the fourth switch (101) corresponds to the overspeed relay (100) monitoring that the rotating speed of the output shaft of the gear box (20) meets the preset rotating speed.

8. The locking control system of a fan impeller according to claim 1 or 2, characterized in that, Further comprising: A third sensor (110) connected with the controller (40) for monitoring the blade angle of the fan.

9. A method of lockup control of a fan impeller, characterized by, The locking control system of the fan impeller according to any one of claims 1-8, comprising: In response to a start signal, obtaining an operating parameter of the fan impeller and a first position parameter between the positioning hole (11) of the locking disc (10) and the locking pin (30); According to the operating parameter and the first position parameter, it is determined that the fan impeller is in a static state and the positioning hole (11) and the locking pin (30) are in a misaligned state, and the locking disc (10) is driven to rotate by the gear box (20); Continuously obtaining a second position parameter between the positioning hole (11) and the locking pin (30); According to the second position parameter, it is determined that the positioning hole (11) and the locking pin (30) are aligned, and a stop instruction is sent.

10. The method of claim 9, wherein The step of driving the locking disc (10) to rotate through the gear box (20) after determining that the fan impeller is in a stationary state and the positioning hole (11) and the locking pin (30) are not aligned, specifically further comprises: Obtaining a third position parameter between the positioning hole (11) and the locking pin (30), and judging according to the third position parameter; Determining that the relative position between the positioning hole (11) and the locking pin (30) meets a preset deceleration condition, and at least realizing the deceleration of the locking disc (10) through the gear box (20).

11. A locking control method of a fan impeller according to claim 9 or 10, characterized in that, The start signal is a maintenance signal.

12. A fan, characterized by The locking control system of the fan impeller according to any one of claims 1 to 8, or the locking control method of the fan impeller according to any one of claims 9 to 11 is adopted when the positioning hole (11) of the fan impeller is aligned with the locking pin (30).

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