CN113701878B - Vibration monitoring and processing device for wind power generation equipment - Google Patents

Abstract

The invention discloses a vibration monitoring and processing device of wind power generation equipment, which comprises a tower frame, a machine cabin at the top of the tower frame, a wind generating set in the machine cabin, a gear box connected with an output shaft of the wind generating set, and an impeller connected with a driving shaft of the gear box, wherein the connecting ends of the gear box, the output shaft and the driving shaft are respectively provided with a first bearing, the connecting end of the output shaft and the wind generating set is provided with a second bearing, and the connecting end of the driving shaft and the impeller is provided with a main bearing seat; the sleeve pipes which are axially sleeved on the output shaft and the driving shaft and used for absorbing vibration are respectively arranged on the outer sides of the output shaft and the driving shaft, and vibration sensors are arranged on the sleeve pipes. The sleeve is sleeved between every two bearings and outside the output shaft and the driving shaft respectively, so that the vibration generated by the rotation of the driving shaft and the output shaft can be received under the connection protection of the two groups of sleeves, and the formed vibration is monitored by the vibration sensor, so that the real-time monitoring sensitivity of the vibration of the driving shaft and the output shaft in the wind generating set is improved.

Description

Vibration monitoring and processing device for wind power generation equipment

technical field

The invention relates to a monitoring device for wind power generating units, in particular to a vibration monitoring and processing device for wind power generating equipment.

Background technique

In practical applications, the main factors that cause the vibration of wind turbines include: rotor imbalance, resonance, mechanical faults, electrical and electromagnetic faults, etc. The operating frequency of the wind turbine is relatively low, and the most likely faults in the wind turbine are resonance and rotating parts. In the current wind power industry, the online monitoring of high-frequency rotating components such as main shafts, gearboxes, and generators has attracted considerable attention, and scientific monitoring and response plans have been made.

When the current wind turbine is working, the output shaft of the unit will vibrate due to the meshing between the gears in the gearbox and the rotation of the blades due to the wind. The main shaft and high-frequency rotating parts of the generator set shake and vibrate, which easily leads to the dislocation of the main shaft and other parts, which makes the impeller unable to rotate normally. Vibration is difficult to monitor and deal with in real time, which increases the limitations of the device; when the wind turbine is output, it will also vibrate under the motor base, and it is easy to combine with the vibration of the external impeller and the internal main shaft, which promotes the overall generation of the generator. Shaking and position deviation, resulting in the same dislocation of the output shaft of the generator set, resulting in the overall paralysis of the wind generator set. When the main shaft in the device is dislocated, it is difficult for the device to quickly straighten the main shaft, and the displaced main shaft may be loosened and broken by the contact pressure of other components after the dislocation, resulting in the main shaft and the blade falling off, which is prone to dangerous accidents. .

SUMMARY OF THE INVENTION

Purpose of the invention: The purpose of the present invention is to provide a vibration monitoring and processing device for wind power generation equipment with high monitoring sensitivity.

Technical solution: The vibration monitoring and processing device for wind power generation equipment according to the present invention includes a tower frame, a machine room at the top of the tower frame, a wind power generator set in the machine room, a gearbox connected with the output shaft of the wind power generator set, and a gear box connected to the gear box. The impeller connected to the drive shaft of the box,

The connection ends of the gearbox, the output shaft and the drive shaft are respectively provided with a first bearing, the connection end of the output shaft and the wind turbine is provided with a second bearing, and the connection end of the drive shaft and the impeller is provided with a main bearing seat;

A casing is sleeved on the output shaft and the outer side of the driving shaft respectively along the output shaft and the driving shaft for absorbing vibration, and the casing is provided with a vibration sensor.

Wherein, the two ends of the two sets of sleeves are respectively provided with annular plates for fixing the sleeves, and the annular plates are respectively connected with the first bearing, the second bearing and the main bearing seat; the inner side of the annular plates is provided with a muffler cotton.

Wherein, a displacement monitoring component for monitoring the offset of the output shaft is arranged in the engine room below the generator set; the displacement monitoring component includes a positioning seat fixed on the bottom of the generator set, and the bottom of the positioning seat is provided with at least one recess At least one groove is provided with a shock absorber for shock absorption of the positioning seat, the outer side of the at least one groove is used for a blocking frame to prevent the shock absorber from moving laterally, and the outer side of the blocking frame is provided with a signal transmitter.

Wherein, an offset rectification assembly for correcting the offset of the drive shaft is arranged on the outer side of the drive shaft in the machine room. The inner threaded pipes are adapted, and the opposite ends of the two groups of inner threaded pipes are respectively provided with semi-arc straightening plates which cooperate with each other and can be clamped on the outside of the drive shaft.

Wherein, the two sets of screw rods are respectively provided with a power mechanism for driving the screw rods to rotate, and the power mechanism includes a first bevel gear located at one end of the two sets of screw rods away from each other, and a second bevel gear meshing with the first bevel gear respectively, The second bevel gears are respectively connected with the servo motors.

Wherein, the bottoms of the two sets of vibration sensors are provided with fixing rings, the fixing rings and the sleeves are connected to each other, and the inner sides of the sleeves are respectively provided with anti-vibration bubble films.

Wherein, the offset correction component further includes an installation groove, the top and bottom of the installation groove are respectively provided with sliding grooves, and the outer side of the sliding grooves is provided with a sliding block interconnected with the inner threaded pipe.

Wherein, the bottom of the shock absorber is provided with a damping block which is correspondingly engaged with the groove, and the top of the shock absorber is provided with a fixing plate interconnected with the positioning seat.

Wherein, the top and bottom of the installation groove are respectively provided with sliding grooves, the outer side of the sliding groove is provided with a sliding block interconnected with the inner threaded pipe, and the inner side of the two sets of semi-arc straightening plates is provided with rubber pads.

Wherein, a filter is arranged in the machine room, a signal receiving module and a signal processing module are respectively arranged on the side of the machine room close to the filter, and a communication control group is arranged at the bottom of the tower. The group is provided with a signal receiver, and the signal receiver is electrically connected with the signal processing module.

Beneficial effect: Compared with the prior art, the present invention achieves the following remarkable effects:

1. Through the two sets of first bearings, the main bearing seat and the second bearing, the drive shaft and the output shaft are in contact with each other respectively, so that the vibration generated by the rotation of the drive shaft and the output shaft can be received under the protection of the connection of the two sets of bushings, and the use of The vibration sensor monitors the vibration formed, and cooperates with the filter and the signal receiving module to send the information to the terminal under the transmission of the signal processing module and the communication control group, so as to monitor the low-frequency vibration of the drive shaft and output shaft in the wind turbine in real time. The structure protects the outside of the drive shaft and the output shaft through two sets of bushings, which makes it difficult for the drive shaft and the output shaft to vibrate, and it is difficult to cause positional deviation. The connection between the seat and the second bearing makes the vibration frequency emitted by the drive shaft and the output shaft easier to be sensed and received by the vibration sensor, which improves the accuracy and sensitivity of signal transmission and increases the working efficiency of real-time monitoring of the device.

2. Using the mutual cooperation of the displacement monitoring components, the four sets of shock absorbers and grooves on the bottom of the generator set are engaged and positioned with each other, so as to alleviate the vibration generated by the operation of the generator set and improve the stability and balance of the generator set operation. And use four sets of blocking frames to wrap around the grooves, so that when the overall position of the generator set is offset, any set of shock absorbers in the four groups can be driven to move and dislocate, forcing the shock absorbers in the dislocation to contact the blocking frame. At this time, an alarm signal can be sent through the signal transmitter, and the information can be obtained in time and the device can be stopped in an emergency, which increases the protection and flexibility of the device and facilitates subsequent maintenance and repair work.

3. Through the mutual cooperation of the offset correction components, the operation of the device can be stopped after the position of the drive shaft is misaligned, and the two groups of internal threaded pipes are forced to move close to each other by the start of the two sets of servo motors, so that the internal threaded pipe drives the semi-arc The top and bottom of the outer side of the drive shaft are contacted and squeezed by the shape correcting plate, which promotes the offset state of the drive shaft to automatically correct the position under extrusion, and prevents the drive shaft from being interfered with by other components during the rotation of the drive shaft, resulting in the rotation of the drive shaft. At the same time, the clamping effect is formed under the extrusion of two sets of semi-arc straightening plates, which improves the supporting force and fixing effect of the drive shaft, and increases the convenience of maintenance and repair of the device.

Description of drawings

Fig. 1 is the front sectional view of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is the enlarged view of A place of Fig. 1 of the present invention;

Fig. 4 is the enlarged view of B place of Fig. 1 of the present invention;

5 is a top view of the positioning plate of the present invention;

6 is a perspective view of the casing of the present invention;

FIG. 7 is a perspective view of the half-arc straightening plate of the present invention.

Detailed ways

The present invention will be described in further detail below.

As shown in Figures 1-7, the present invention provides a vibration monitoring and processing device for wind power generation equipment, including a tower 1, a machine room 3 is arranged on the top of the tower 1, and a gear box is arranged at the middle position inside the machine room 3 6. The left and right sides of the gearbox 6 are respectively provided with a generator set 16 and three sets of impellers 4 . The output shaft 19 of the generator set 16 is connected with the gear box 6 , and the drive shaft of the gear box 6 is connected with the three groups of impellers 4 . The connection end between the gearbox 6 and the output shaft and the connection end between the gearbox and the drive shaft are respectively provided with a first bearing 9 , the connection end between the output shaft and the generator set 16 is provided with a second bearing 18 , and the drive shaft and the three groups of impellers 4 The connecting end is provided with a main bearing seat 14 .

The side of the main bearing seat 14 and one set of first bearings 9 that are close to each other, the side of the second bearing 18 and the side of the other set of first bearings 9 that are close to each other are respectively provided with annular plates 13, and one of the two sets of annular plates 13 is close to each other. The side and the other two groups of annular plates 13 close to each other are respectively provided with sleeves 12 which are matched with the outer diameters of the drive shaft 5 and the output shaft 19 . The bottom of the outer side of the two sets of vibration sensors 11 is provided with a fixing ring, and the fixing ring is connected with the casing 12. The inner side of the two sets of casings 12 is provided with an anti-vibration bubble film to improve the buffering and anti-vibration effect in the casing 12 and increase the number of pairs of casings 12. The protection of the misalignment of the drive shaft 5 and the output shaft 19. The inner side of the four groups of annular plates 13 is provided with noise-absorbing cotton, and the four groups of annular plates 13 are respectively in contact with the two groups of the first bearing 9 , the main bearing seat 14 and the second bearing 18 , so as to improve the fixing effect of the installation of the sleeve 12 and the first The bearing 9, the main bearing housing 14 and the second bearing 18 transmit the reception frequency of the vibration.

A filter 7 is provided at the middle position of the inner top of the machine room 3 , and a signal receiving module 8 and a signal processing module 10 are respectively provided on the side of the inner top of the machine room 3 close to the filter 7 . The bottom of the tower 1 is provided with a communication control group 2 .

One side of the machine room 3 is provided with an offset correction component. One side of the offset correction component is provided with an installation groove 152. The top and bottom of the installation groove 152 are respectively sleeved with screw rods 153. The outer sides of the two sets of screw rods 153 are provided with internally threaded pipes 151 that are threaded. The bottom of the threaded pipe 151 and the top of the other group of internally threaded pipes 151 are provided with a correcting plate 15 that cooperates with each other. The correcting plate in this embodiment is a semi-arc correcting plate. The bottom of the outer side of the rod 153 is provided with a first bevel gear 154, the bottom and top of the inner side of the machine compartment 3 are respectively provided with a servo motor 156, and the output ends of the two sets of servo motors 156 are provided with a second bevel gear 154 that meshes with each other. Two bevel gears 155. A control box is provided on one side of the inner top of the cabin 3 , and the control box is electrically connected with the servo motor 156 .

The top and bottom of the inner side of the installation groove 152 are provided with chute, the outer side of the chute is provided with a sliding block interconnected with the inner threaded pipe 151, and the inner side of the two sets of semi-arc straightening plates 15 are provided with rubber pads to increase the half-arc The fit and clamping force of the shape correction plate 15 to the drive shaft 5 improves the accuracy of the position correction of the drive shaft 5 .

A displacement monitoring component is provided below the generator set 16 . The bottom of the displacement monitoring assembly is provided with a positioning seat 17, the four corners of the bottom of the positioning seat 17 are provided with shock absorbers 174, one side of the inner bottom of the cabin 3 is provided with a positioning plate 172, and the four corners of the top of the positioning plate 172 are provided with and reducer. The grooves 173 of the shock absorbers 174 are adapted to each other. The top of the positioning plate 172 is provided with a blocking frame 171 near the outer side of the four groups of grooves 173 , and a signal transmitter 175 is provided on the side where the two sets of blocking frames 171 on the same side are far away from each other. A mounting frame is provided at the bottom of one inner side of the engine room 3 , and the mounting frame is connected with the generator set 16 to improve the installation stability of the generator set 16 .

The middle position of the bottom of the positioning seat 17 is provided with a splicing block, and the middle position of the top of the positioning plate 172 is provided with a splicing slot that is compatible with the splicing block. When the frame 171 is impacted and touched, the signal transmitter 175 is used to transmit a warning signal to the remote terminal, which warns the dislocation of the structural components in the device, which is convenient for the staff to carry out quick maintenance work.

The bottoms of the four groups of shock absorbers 174 are provided with shock-absorbing blocks, and the shock-absorbing blocks and the grooves 173 are correspondingly engaged with each other, which can improve the positioning effect of the shock absorbers 174 and the shock-absorbing blocks and the grooves 173, and prevent the shock absorbers 174 from engaging with each other. At the position where it can be easily disengaged from the engaging position of the groove 173, the top of the outer side of the four groups of shock absorbers 174 is provided with a fixing plate. ability.

During the start-up operation of the generator set 16, vibration will be generated, which will be buffered and offset by the cooperation of the shock absorber 174 and the groove 173, so as to improve the operation stability of the generator set 16. When the vibration amplitude of the generator set 16 is large, it will drive the positioning seat 17 and the shock absorber 174 produce a positional deviation, so that the shock absorber 174 is released from the engagement limit with the groove 173, and is in contact with the blocking frame 171 through the dislocation of the shock absorber 174. At this time, the signal transmitter 175 is used to The dislocation information of the generator set 16 is transmitted to the remote terminal through a signal, alerting the staff to quickly maintain and repair the device, and increasing the comprehensiveness of the real-time monitoring of the device.

The bottom of the front end of the tower 1 is provided with a warehouse door, and the top of the communication control group 2 is provided with a signal receiver. The staff monitors the device in real time remotely. There is a control box on one side of the top inside the engine room 3, and the control box is electrically connected with the servo motor 156. The bottom of the inner side of the engine room 3 is provided with a mounting frame, and the mounting bracket is connected with the generator set 16 to improve the installation of the generator set 16. stability.

Working process: When the generator set 16 in the device is started, the gear box 6 can be used to make the drive shaft 5, the output shaft 19 and the impeller 4 rotate respectively. During the period, with the rotation of the drive shaft 5 and the output shaft 19, the generated The vibration is absorbed by the contact between the two sets of first bearings 9, the main bearing seat 14 and the second bearing 18, and the absorbed vibration force is transmitted to the surfaces of the four sets of annular plates 13 and the two sets of sleeves 12, and finally passes through the surface of the sleeves 12. The vibration sensor 11 absorbs the vibration and forms the signal transmission filter 7 for analysis, and transmits the analyzed signal to the signal receiving module 8 and the signal processing module 10 for processing, and finally sends it to the communication control group 2 through the signal processing module 10, and controls the communication through communication. Group 2 transmits the remote terminal, so that the low-frequency vibration generated in the device can be monitored in real time.

When the signal received by the vibration sensor 11 is transmitted to the signal processing module 10, the structural components in the device can be controlled by the signal processing module 10 according to the frequency of vibration. When the vibration exceeds a predetermined range, the device can be stopped through the control box and then started. The two sets of servo motors 156 drive the second bevel gear 155 to rotate, and the screw rod 153 is forced to rotate through the mutual meshing of the second bevel gear 155 and the first bevel gear 154 . Under the limited cooperation of the chute, the inner threaded pipes 151 are urged to approach each other, and the mutual approach of the two groups of inner threaded pipes 151 is used to drive the semi-arc straightening plate 15 to clamp and fit the surface of the drive shaft 5 to form an automatic straightening work. Reset the drive shaft 5 which is dislocated due to vibration, and according to the needs of use, the support force of the drive shaft 5 can also be improved by the clamping and positioning of the semi-arc straightening plate 15, which increases the convenience of subsequent maintenance and repairs, and enhances the function of the device. sex and practicality.

Claims (9)

1. A vibration monitoring and processing device for wind power generation equipment, comprising a tower (1), a machine room (3) arranged on the top of the tower (1), and a wind power generator set (16) arranged in the machine room (3) , a gearbox (6) connected with the output shaft of the wind turbine (16), and an impeller (4) connected with the drive shaft (5) of the gearbox (6), characterized in that, A first bearing (9) is respectively provided at the connection end of the gear box (6) with the output shaft and the drive shaft (5), and a second bearing (18) is provided at the connection end of the output shaft and the wind turbine generator set (16). ), the connecting end of the drive shaft (5) and the impeller (4) is provided with a main bearing seat (14); A casing (12) for absorbing vibration is respectively sleeved on the outside of the output shaft and the driving shaft (5) along the output shaft and the driving shaft (5) in the axial direction, and a vibration sensor (11) is arranged on the casing (12) ; An offset correction assembly for correcting the offset of the drive shaft (5) is provided in the machine room (3) on the outside of the drive shaft (5), and the offset correction assembly includes two opposite sets of rotatable screw rods ( 153), the outer sides of the two sets of screw rods (153) are respectively fitted with internally threaded pipes (151), and the opposite ends of the two sets of internally threaded pipes (151) are respectively provided with mutually matched and can be engaged with the outside of the drive shaft (5). Correction plate (15). 2 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein the two sets of the sleeves ( 12 ) are respectively provided with annular plates ( 13 ) at both ends for fixing the sleeves ( 12 ). 3 . , the annular plate (13) is respectively connected with the first bearing (9), the second bearing (18) and the main bearing seat (14). 3 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein a displacement monitoring component for monitoring the offset of the output shaft is provided in the engine room ( 3 ) below the generator set ( 16 ). 4 . , the displacement monitoring assembly includes a positioning seat (17) fixed on the bottom of the generator set (16), the bottom of the positioning seat (17) is provided with at least one groove (173), and at least one groove is provided with a positioning seat (173). A shock absorber (174) for shock absorption of the seat (17), a blocking frame (171) for preventing lateral movement of the shock absorber on the outer side of at least one groove (173), the blocking frame (171) is provided with a signal transmission device (175). 4 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein the two sets of screw rods ( 153 ) are respectively provided with power mechanisms for driving the screw rods ( 153 ) to rotate, and the power mechanisms include: A first bevel gear (154) at one end of the screw rods (153) away from each other, and a second bevel gear (155) respectively meshing with the first bevel gear (154), the second bevel gears are respectively connected to the servo motor (156) ). 5 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein the bottom of the two groups of the vibration sensors ( 11 ) is provided with a fixing ring, and the fixing ring and the casing ( 12 ) are connected to each other. 6 . . 6 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein the offset correction component further comprises an installation groove ( 152 ), and the top and bottom of the installation groove ( 152 ) are respectively provided with 6 . A chute, the outer side of the chute is provided with a sliding block interconnected with the inner threaded pipe (151). 7 . The vibration monitoring and processing device for wind power generation equipment according to claim 3 , wherein the bottom of the shock absorber ( 174 ) is provided with a shock-absorbing block correspondingly engaged with the groove ( 173 ), so that the The top of the shock absorber (174) is provided with a fixing plate interconnected with the positioning seat (17). 8 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein a filter ( 7 ) is arranged in the engine room ( 3 ), and the filter ( 3 ) is close to the inside of the engine room ( 3 ). 7) One side is provided with a signal receiving module (8) and a signal processing module (10) respectively, the bottom of the tower (1) is provided with a communication control group (2), and the communication control group (2) is provided with A signal receiver, which is electrically connected to the signal processing module (10). 9 . The vibration monitoring and processing device for wind power generation equipment according to claim 1 , wherein the inner side of the two sets of the sleeves ( 12 ) is provided with an anti-vibration bubble film. 10 .

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