CN206399365U - Monitoring device and wind power generating set for monitoring bearing axial play - Google Patents
Monitoring device and wind power generating set for monitoring bearing axial play Download PDFInfo
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- CN206399365U CN206399365U CN201621288930.2U CN201621288930U CN206399365U CN 206399365 U CN206399365 U CN 206399365U CN 201621288930 U CN201621288930 U CN 201621288930U CN 206399365 U CN206399365 U CN 206399365U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 46
- 238000012544 monitoring process Methods 0.000 title abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model is related to a kind of monitoring device and wind power generating set for being used to monitor bearing axial play.Monitoring device includes：Fulcrum bearing, including relative bottom and top, top surface are provided with the guidance part for extending formation in the surface；Movable block, including junction surface, match with guidance part, and junction surface is slidably matched with guidance part, so that movable block is moved in fulcrum bearing along the bearing of trend of guidance part；Position adjustment component, supports movable block, and position adjustment Component driver movable block movement is to adjust the relative position of movable block and guidance part；Sensor support rod, including connection end and free end, the surface at connection end and movable block dorsad junction surface are connected；Sensor, is arranged on free end, and the end face of sensor and bearing is oppositely arranged, and is monitored with the axial displacement to end face.Monitoring device of the present utility model is easy to operate, time saving and energy saving, improves monitoring efficiency.
Description
Technical field
The utility model is related to monitoring device technical field, more particularly to a kind of prison for being used to monitor bearing axial play
Survey device and wind power generating set.
Background technology
For large-scale direct-drive permanent magnet wind power generator, rear and front end leads between generator unit stator main shaft and alternator shaft
Interference fit installs two bearings, i.e. fore bearing and rear bearing.Fore bearing is located between stator main shaft and rotating shaft miner diameter end, leans on
The impeller hub being closely connected with flange in rotating shaft；Bearing is located between stator main shaft and rotating shaft bigger diameter end afterwards.Impeller blade is fixed on
On impeller hub, generator amature is driven by rotating shaft indirectly.
Front and back bearings will operationally bear load complicated and changeable, and the load ratio born is larger, wind to blade
Upper vibrations are also big, it requires that the clearance of front and back bearings should be zero windage or negative gap value somewhat, the so feelings in vibrations
The fretting wear of bearing can be reduced under condition.
The changed play of shafting generally refers to the gap change between bearing roller and race way.Theoretical clearance is
Refer to bearing roller and raceway changing value, but due to the structure of front and back bearings, worry has an impact to front and back bearings performance, it is not recommended that
Requirement to parts of bearings perforate, therefore directly test shafting changed play difficulty is larger.Usual bearing or the clearance of shafting become
Change the change all by test bearing axially or radially, then Equivalent Calculation investigates the changed play amount of bearing or shafting.For
Rolling bearing is more to tend to test the changes of end-play, then by geometrical contact angular dependence, calculation bearing or shafting
Changed play.
Clearance ignores the deformation of rolling element (roller deformation is less than a ten thousandth), then it is bearing internal external to think changed play
The relative change of raceway causes, and tests the axially opposing displacement of corresponding bearing internal external circle, this is also generally by the way of.
The more commonly used method is at present：The bearing assembled is erected outer collar with cushion block, jack top is used in lower section
Inside race is pressed, bearing axial displacement is monitored by hand with dial gauge.This method is relatively complicated, wastes time and energy, and influences monitoring
Efficiency.
Utility model content
The utility model embodiment provides a kind of monitoring device for being used to monitor bearing axial play, can pass through sensor
Directly bearing axial displacement is monitored, it is easy to operate, it is time saving and energy saving, it is engaged fulcrum bearing is fixedly attached to bearing
Moving axis on when can also realize on-line monitoring.
In view of the above-mentioned problems, on the one hand being proposed according to the utility model embodiment a kind of for monitoring bearing axial play
Monitoring device, including：Fulcrum bearing, including relative bottom and top, above-mentioned top surface is provided with to be extended in the surface
The guidance part of formation；Movable block, including junction surface, match with above-mentioned guidance part, and above-mentioned junction surface is slided with above-mentioned guidance part
It is dynamic to coordinate, so that above-mentioned movable block is moved in above-mentioned fulcrum bearing along the bearing of trend of above-mentioned guidance part；Position adjustment component, branch
Hold movable block, the above-mentioned movable block movement of position adjustment Component driver is to adjust the relative position of above-mentioned movable block and above-mentioned guidance part
Put；Sensor support rod, including connection end and free end, the surface at above-mentioned connection end and above-mentioned movable block dorsad above-mentioned junction surface
It is connected；Sensor, is arranged on above-mentioned free end, and the end face of sensor and bearing is oppositely arranged, with the axial position to end face
Shifting amount is monitored.
According to the one side of the utility model embodiment, location division is provided with above-mentioned connection end, above-mentioned location division is used
Positioned in by the sensor support rod on above-mentioned movable block.
According to the one side of the utility model embodiment, the sensor support rod includes cabling channel, above-mentioned cabling channel
Along the axially extending of the sensor support rod.
According to the one side of the utility model embodiment, further comprise what is be engaged with the sensor support rod
Seal assembly, axially movable setting of the above-mentioned seal assembly along the sensor support rod.
According to the one side of the utility model embodiment, above-mentioned seal assembly includes being set in the sensor support rod
On Sealing shield ring and locking component, above-mentioned locking component be located between above-mentioned Sealing shield ring and above-mentioned movable block.
According to the one side of the utility model embodiment, crossed beam trunking is provided with the end face of above-mentioned Sealing shield ring, it is above-mentioned
Crossed beam trunking is radially extended along above-mentioned Sealing shield ring.
According to the one side of the utility model embodiment, above-mentioned Sealing shield ring includes centre bore and from above-mentioned centre bore
On hole wall radially outward from projection, above-mentioned projection is inserted into above-mentioned cabling channel, and above-mentioned crossed beam trunking extends to above-mentioned projection
Top.
According to the one side of the utility model embodiment, above-mentioned locking component includes compressing back-up ring and is arranged on above-mentioned
Compress the nut between back-up ring and above-mentioned movable block.
According to the one side of the utility model embodiment, the sidepiece of above-mentioned guidance part is provided with pilot hole, above-mentioned guiding
The locating part being engaged with above-mentioned pilot hole is provided with bearing of trend extension of the hole along above-mentioned guidance part, above-mentioned movable block.
According to the one side of the utility model embodiment, above-mentioned position adjustment component includes being driven with above-mentioned movable block and connected
The power transmission shaft connect.
According to the one side of the utility model embodiment, screw-driven connects between above-mentioned power transmission shaft and above-mentioned movable block
Connect.
According to the one side of the utility model embodiment, above-mentioned position adjustment component also include along above-mentioned transmission shafts to
Two contiguous blocks being arranged side by side, above-mentioned contiguous block is used to be connected with above-mentioned fulcrum bearing, and above-mentioned movable block is arranged on above-mentioned two
Between individual contiguous block.
According to the one side of the utility model embodiment, above-mentioned fulcrum bearing includes mounting part, and above-mentioned installation is fixed
Portion is used to above-mentioned fulcrum bearing being fixed on mounting platform.
The monitoring device for being used to monitor bearing axial play provided according to the utility model embodiment, it includes can be right
The sensor that bearing axial direction displacement variable is monitored, and can adjust the displacement of movable block to adjust by position adjustment component
The position of whole sensor, is moved easily sensor so that sensor is monitored in optimum position to bearing, of the present utility model
Monitoring device is easy to operate, time saving and energy saving, improves monitoring efficiency.In addition, being fixedly attached to and bearing by fulcrum bearing
On-line monitoring can be also realized when on the moving axis being engaged.
According to the other side of the utility model embodiment there is provided a kind of wind power generating set, including：Afterwards bearing and
The rotary shaft being connected with the inner ring of above-mentioned rear bearing, rotary shaft includes centre bore and the through hole radially extended along rotary shaft,
Through hole is connected with centre bore；The fulcrum bearing of above-mentioned monitoring device is arranged on the hole wall of the centre bore of rotary shaft, sensor
The free end of support rod and sensor are passed from through hole, and the sensor for passing through hole relative with the end face of the inner ring of rear bearing is set
Put, sensor is monitored to the axial displacement of the end face of the inner ring of rear bearing.
Brief description of the drawings
The feature, advantage and technique effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the overall structure diagram of the monitoring device of the utility model embodiment.
Fig. 2 is the structural representation of the fulcrum bearing of the monitoring device of the utility model embodiment.
Fig. 3 is the movable block and position adjustment component mated condition schematic diagram of the monitoring device of the utility model embodiment.
Fig. 4 is the sensor support rod and sensor mated condition schematic diagram of the monitoring device of the utility model embodiment.
Fig. 5 is the structural representation of the Sealing shield ring of the monitoring device of the utility model embodiment.
Fig. 6 is the structural representation of the compression back-up ring of the monitoring device of the utility model embodiment.
Fig. 7 is use state schematic diagram of the monitoring device of the utility model embodiment in wind power generating set.
Fig. 8 be the utility model embodiment clearance calculation formula in each parameter schematic diagram.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Description of symbols：
1st, monitoring device；
2nd, fulcrum bearing；21st, bottom；22nd, guide channel；23rd, sidepiece；24th, pilot hole；25th, fixed column；26th, central through hole；
27th, top surface；
3rd, movable block；31st, limiting section；32nd, junction surface；311st, recess；321st, connecting hole；
4th, sensor support rod；41st, connection end；42nd, free end；43rd, location division；44th, groove；45th, cabling channel；
5th, sensor；51st, cable；
6th, position adjustment component；61st, power transmission shaft；62nd, contiguous block；63rd, knob；
7th, seal assembly；71st, Sealing shield ring；711st, crossed beam trunking；712nd, centre bore；713rd, projection；72nd, back-up ring is compressed；
721st, centre bore；73rd, nut；
8th, locating part；
9th, rear bearing；91st, outer ring；92nd, inner ring；
10th, rotary shaft；101st, through hole.
Embodiment
Embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following examples
The detailed description and the accompanying drawings be used to exemplarily illustrate principle of the present utility model, but can not be used for limiting model of the present utility model
Enclose, i.e., the utility model is not limited to described embodiment.
In description of the present utility model, it is necessary to explanation, unless otherwise indicated, term " interior ", " outer ", " bottom ",
The orientation or position relationship of instructions such as " tops " are, based on orientation shown in the drawings or position relationship, to be for only for ease of description originally
Utility model and simplified description, rather than instruction or the signified device of hint or element must be with specific orientation, with specific
Azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
As shown in figure 1, the monitoring device 1 of the utility model embodiment includes fulcrum bearing 2, the shifting being arranged in fulcrum bearing 2
Motion block 3, the sensor support rod 4 being connected with movable block 3, the sensor 5 being arranged in sensor support rod 4 and supporting are moved
The position adjustment component 6 of motion block 3.
As shown in Fig. 2 the fulcrum bearing 2 of the present embodiment includes bottom 21, the top relative with bottom 21 and is arranged on top
On portion surface the guidance part to be formed is radially extended along top.The guidance part of the present embodiment is guide channel 22.Guide channel 22 is straight
Groove, i.e. top of the guide channel 22 along fulcrum bearing 2 radially extend and run through the side adjacent with bottom 21 and top.Guide channel
22 can also be not through the side adjacent with bottom 21 and top, but terminates extension in the position close to the side.Guiding
The pilot hole 24 of strip is provided with relative two sidepiece 23 of groove 22.Bearing of trend of the pilot hole 24 along guide channel 22 prolongs
Stretch.Pilot hole 24 can be waist-shaped hole or square opening.
The fulcrum bearing 2 of the present embodiment includes mounting part.The mounting part of the present embodiment is included from top surface
Four fixed columns 25 extended.Four fixed columns 25 are arranged at intervals two-by-two.Two pairs of fixed columns 25 are with the axis pair of guide channel 22
Claim to set.The pilot hole 24 set on the sidepiece 23 of guide channel 22 is located between each pair fixed column 25.In each fixed column 25
Central through hole 26 is provided with, central through hole 26 is through to the bottom 21 of fulcrum bearing 2 from the top of fixed column 25.
As shown in figure 3, the cross section of the movable block 3 of the present embodiment is general " t " shape.Movable block 3 include limiting section 31 with
And the junction surface 32 extended out from limiting section 31.Limiting section 31 snaps into relative two sidepiece 23 to form guide channel 22
On top surface 27, junction surface 32 and the guide channel 22 of fulcrum bearing 2 match and sliding engagement with one another.Movable block 3 is along guide channel 22
Bearing of trend movement is to adjust from the position in fulcrum bearing 2.In the two opposite side surfaces at the junction surface 32 of movable block 3 respectively
It is provided with two connecting holes 321.After the junction surface 32 of movable block 3 coordinates with guide channel 22, connecting hole 321 is relative with pilot hole 24
Together, locating part 8 is then installed into connecting hole 321 by pilot hole 24, to fix position of the movable block 3 in guide channel 22,
Movable block 3 is avoided to depart from mated condition with guide channel 22.Meanwhile, locating part 8 can in pilot hole 24 along pilot hole 24 length
Direction of principal axis is moved, thus limit movable block 3 can only along guide channel 22 axial movement, the convenient axially adjustable shifting along guide channel 22
The position of motion block 3.Dorsad the central area on the surface at junction surface 32 is provided with recess 311 on limiting section 31.Set on junction surface 32
It is equipped with the screwed hole parallel with the axis of guide channel 22.
The locating part 8 of the present embodiment can be spacer pin or screw.The head radial dimension of spacer pin or screw, which is more than, leads
Pad is arranged to the width in hole 24, or on the head of screw, the radial dimension of pad is more than the width of pilot hole 24.When passing through
, can be with after movable block 3 is adjusted into optimum position when the locating part 8 that pilot hole 24 is installed into connecting hole 321 is screw
By tightening the screw so that movable block 3 is fixed at the position, it is to avoid movable block 3 is moved off-target position.
In one embodiment, guidance part is guiding convex portion.Guiding convex portion radially extended along top and with bottom 21 and top
The adjacent side in portion aligns.Guiding convex portion can radially extend and terminate in the position close to the side to prolong along top
Stretch.The pilot hole 24 of strip is provided with relative two sidepiece for guiding convex portion.The junction surface 32 of movable block 3 is led with this
Draw the groove that convex portion is slidably matched.
As shown in Figure 1, Figure 3, the position adjustment component 6 of the present embodiment includes the power transmission shaft 61 being connected with movable block 3
And two contiguous blocks 62 being arranged side by side along the axial direction of power transmission shaft 61.The power transmission shaft 61 of the present embodiment is the spiral shell with movable block 3
The screw rod of pit threaded connection.Through hole is each provided with two contiguous blocks 62, contiguous block 62 is set to screw rod by through hole set
On, or bearing is installed in through-holes, the inner ring set of bearing is set on screw rod.One end of screw rod is provided with knob 63, the other end
Stop screw is provided with, two contiguous blocks 62 are located between knob 63 and stop screw.
The fulcrum bearing 2, movable block 3 and the assembling process of the three of position adjustment component 6 of the present embodiment are, first by movable block
3 are installed on the screw rod between two contiguous blocks 62 of position adjustment component 6, then by the junction surface 32 of movable block 3 and guiding
Groove 22 is engaged.Spacer pin or screw are installed in pilot hole 24.Finally two contiguous blocks 62 of position adjustment component 6 are distinguished
It is connected by fixing screws with forming two opposite side portions 23 of guide channel 22, so far completes the assembly working of three.Two
The axis perpendicular of contiguous block 62 and guide channel 22, it is ensured that the axis of screw rod is parallel with the axis of guide channel 22.By fulcrum bearing
2nd, movable block 3 and position adjustment component 6 are completed after assembling, are rotated by turn knob 63 with actuating screw rod, and then rotate
Screw rod can drive axial movement of the movable block 3 along guide channel 22.
As shown in figure 4, the sensor support rod 4 of the present embodiment includes connection end 41 and free end 42.The end of connection end 41
Location division 43 is provided with face.The location division 43 of the present embodiment is the convex portion being engaged with the recess 311 on movable block 3, is used for
Sensor support rod 4 is positioned in sensor support rod 4 and the assembling process of movable block 3.The horizontal stroke of the convex portion of the present embodiment
Section can be rectangle, triangle.The other end of sensor support rod 4 is provided with free end 42.The free end 42 of the present embodiment
On be provided with for install sensor 5 mounting hole (not shown) and accommodate sensor 5 groove 44.Mounting hole is set
In the bottom of groove 44, its axis intersects and vertical with the axial direction of sensor support rod 4.The mounting hole of the present embodiment is screw thread
Hole.The cabling channel 45 extended along own axes is provided with sensor support rod 4.One end of cabling channel 45 is connected with groove 44
Logical, the other end is extended at connection end 41 but not through the end face of connection end 41, but is stopped during apart from the end face certain distance
Extension.Whole outer surface of the sensor support rod 4 along itself axial direction is provided with screw thread or the local periphery along itself axial direction
Surface is provided with thread segment.The original position of screw thread is the end face of connection end 41 in sensor support rod 4.
It is first by the convex portion pair in sensor support rod 4 by sensor support rod 4 and the process that movable block 3 is connected
Recess 311 on quasi- movable block 3, it is ensured that the axis of mounting hole is parallel with the axis of guide channel 22 and sensor support rod 4
Axis, will sensing with the axis perpendicular of guide channel 22 and then to sensor support rod 4 and the implementation welding of the contact zone of movable block 3
Device support rod 4 is welded on movable block 3, to fix sensor support rod 4 on movable block 3.
As Figure 1 and Figure 4, the sensor 5 of the present embodiment is eddy current displacement sensor.Eddy current displacement sensor
Transmitting terminal is threadedly coupled with the mounting hole of sensor support rod 4, and the head of eddy current displacement sensor passes mounting hole, afterbody position
In groove 44.The cable 51 of eddy current displacement sensor afterbody connection is disposed in the cabling channel 45 of sensor support rod 4
And cabling channel 45 is submerged completely so that protection of the cable 51 by sensor support rod 4.
As shown in figure 1, the monitoring device 1 of the present embodiment also includes the seal assembly 7 being engaged with sensor support rod 4.
As shown in figure 5, the seal assembly 7 of the present embodiment includes Sealing shield ring 71 and locking component.Locking component includes compressing back-up ring
72 (as shown in Figure 6) and nut 73 (as shown in Fig. 7).Compress back-up ring 72 can be metal collar material for steel, iron, aluminium,
Aluminium alloy, copper or other rigidity meet desired metal material or high-strength engineering plastic.The compression gear of the present embodiment
Circle 72 is the plectane with centre bore 721.Nut 73, compression back-up ring 72 and Sealing shield ring 71 cover successively is set to sensor supporting
On bar 4, and three can along sensor support rod 4 axial movement.Nut 73, which is located at, to be compressed between back-up ring 72 and movable block 3.
Nut 73 is threadedly coupled with the connection end 41 of sensor support rod 4.During turn nut 73, compression back-up ring 72 can be adjusted and close
Axial location of the block circle 71 in sensor support rod 4.The end face of back-up ring 72 is dorsad compressed on Sealing shield ring 71 to be used for and it
The surface contact of his structural member fits to cause both contact surfaces formation sealing surface.
As shown in figure 5, being provided with the crossed beam trunking 711 radially extended on the end face of Sealing shield ring 71.Sealing shield ring 71 is arranged
After on to sensor support rod 4, crossed beam trunking 711 aligns with cabling channel 45.When the end face with the surface of other structures part contacts patch
After conjunction, the cable 51 of eddy current displacement sensor connection can lead to the crossed beam trunking 711 from cabling channel 45, and from the crossed beam trunking
711 draw, it is to avoid cable 51 supports to the formation of Sealing shield ring 71 and causes occur gap at this, it is impossible to realize sealing.Further
Radially outward from a projection 713 on ground, the hole wall of the centre bore 712 of Sealing shield ring 71.Crossed beam trunking 711 extends to projection 713
Top.The projection 713 of Sealing shield ring 71 be may be inserted into the cabling channel 45 of sensor support rod 4, on the one hand, sealing can be kept off
Circle 71 is positioned, convenient to install, on the other hand, and crossed beam trunking 711 is extended in cabling channel 45, convenient by the line in cabling channel 45
Cable 51 leads to crossed beam trunking 711.The sidepiece of the projection 713 of Sealing shield ring 71 and the sidepiece of cabling channel 45, the top of projection 713 with
The bottom of cabling channel 45 is fitted each other, so that the contact surface formation sealing surface of projection 713 and cabling channel 45.
The Sealing shield ring 71 of the present embodiment can be rubber back-up ring or silica gel back-up ring.
As shown in fig. 7, the monitoring device 1 of the utility model embodiment is used for the axial play to cylinder or taper roll bearing
Gap is monitored, and especially the rear bearing 9 of MW class wind turbine is monitored.The monitoring device 1 of the present embodiment is monitored
Rear bearing 9 include outer ring 91 and inner ring 92.Outer ring 91 is generally fixed on structural member, and inner ring 92 is connected with rotary shaft 10
And synchronous axial system.When rotary shaft 10 and inner ring 92 are rotated together, monitoring device 1 can be to the end face axial displacement feelings of inner ring 92
Condition is monitored.
So that the rear bearing 9 to wind power generating set is monitored as an example, description uses the mistake of the monitoring device 1 of the present embodiment
Journey, but the embodiment does not limit the protection domain of the application, is provided with the wind-driven generator of the monitoring device 1 of the present embodiment
Group, can be monitored on-line by bearing 9 after 1 pair of monitoring device, specific as follows：
Bearing 9 includes outer ring 91 and inner ring 92 afterwards.The rotary shaft 10 of wind power generating set and the phase of inner ring 92 of rear bearing 9
Connection.Rotary shaft 10 and the synchronous axial system of inner ring 92.Rotary shaft 10 is tubular, and centre is provided with centre bore.
Four screwed holes and a through hole for running through the inside and outside wall of rotary shaft 10 are bored on the hole wall of the centre bore of rotary shaft 10
101.The axial line distance of the axis of the through hole 101 to four screwed holes is equal.Eddy current displacement sensor is installed to be fixed to and passed
On the free end 42 of sensor support rod 4.Sensor support rod 4 with eddy current displacement sensor is pierced into from centre bore side
Through hole 101, is passed from opposite side.By screw, on the hole wall that the fulcrum bearing 2 of monitoring device 1 is fixed to centre bore.Turn is revolved
Button 63 is being installed with adjusting sensor support rod 4 along the axial direction of guide channel 22 (namely along the radial direction of through hole 101)
Position in hole, and then eddy current displacement sensor is adjusted the distance between to the end face of inner ring 92 of rear bearing 9.According to electricity
Output valve, useful range and the sensitivity of eddy displacement sensor by the end face of eddy current displacement sensor and rear bearing 9 it
Between distance be adjusted to optimum distance, then stop the rotation knob 63.By the cable 51 of eddy current displacement sensor from cabling channel 45
Monitoring device 1 is drawn with crossed beam trunking 711.Then turn nut 73, nut 73, which is promoted, to be compressed back-up ring 72 to press Sealing shield ring 71
It is tightened on the hole wall of centre bore so that fit to realize sealing, crossed beam trunking 711 with the hole wall of centre bore in the surface of Sealing shield ring 71
Sealing is realized between cable 51, prevents the grease from rear bearing 9 spilling in through hole 101 flows to centre bore.
Because the outer ring 91 of rear bearing 9 is fixed on structural member, position is held essentially constant, and passes through current vortex sensor pair
The end face of 9 inner ring of bearing 92 is monitored in the displacement of the axial direction of rear bearing 9 afterwards, is calculated again by the displacement measured
Go out the end-play of rear bearing 9.The cable 51 of eddy current displacement sensor passes through attachment means (such as slip ring) and control system
It is connected, so that monitoring device 1 can for a long time be monitored on-line to the axial displacement situation of inner ring 92 of rear bearing 9.
After the installation of monitoring device 1 is fixed, meet after axial displacement test request, monitoring device 1 can be to rear
The axial displacement situation of inner ring 92 of bearing 9 is monitored on-line and utilizes clearance calculation formula to calculate.
Clearance calculation formula (Parameters in Formula reference picture 8)：
A=X-Pf+G
S=S'-0.52G
A --- end cap and inner ring contact surface to shaft end distance (mm) after match grinding；
S --- the rear bearing Internal and external cycle difference in height (mm) after the completion of assembling；
Rear bearing inner race under X --- zero windage is to shaft end apart from (mm)；
Pf --- dead axle weight compensating value (mm)；
G --- the corresponding end cap of pretightning force and the inner ring magnitude of interference (mm)；
S' --- the rear bearing Internal and external cycle difference in height (mm) after assembling under zero windage.
Although the utility model is described by reference to preferred embodiment, model of the present utility model is not being departed from
In the case of enclosing, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as not depositing
The every technical characteristic being previously mentioned in structural hazard, each embodiment can combine in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (14)
1. a kind of monitoring device (1) for being used to monitor bearing axial play, it is characterised in that including：
Fulcrum bearing (2), including relative bottom (21) and top, the top surface are provided with what the extension in the surface was formed
Guidance part；
Movable block (3), including junction surface (32), match with the guidance part, and the junction surface (32) and the guidance part
It is slidably matched, so that the movable block (3) is moved in the fulcrum bearing (2) along the bearing of trend of the guidance part；
Position adjustment component (6), supports the movable block (3), and the position adjustment component (6) drives the movable block (3) to move
The dynamic relative position to adjust the movable block (3) and the guidance part；
Sensor support rod (4), including connection end (41) and free end (42), the connection end (41) and the movable block (3)
Dorsad the surface of the junction surface (32) is connected；
Sensor (5), is arranged on the free end (42), and the sensor (5) and the end face of the bearing are oppositely arranged, with
The axial displacement of the end face is monitored.
2. monitoring device (1) according to claim 1, it is characterised in that be provided with location division on the connection end (41)
(43), the location division (43) is used to be positioned the sensor support rod (4) on the movable block (3).
3. monitoring device (1) according to claim 1, it is characterised in that the sensor support rod (4) includes cabling channel
(45), the cabling channel (45) is along the axially extending of the sensor support rod (4).
4. monitoring device (1) according to claim 3, it is characterised in that further comprise and supported with the sensor
The seal assembly (7) that bar (4) is engaged, axially movable setting of the seal assembly (7) along the sensor support rod (4)
Put.
5. monitoring device (1) according to claim 4, it is characterised in that the seal assembly (7) is described including being set in
Sealing shield ring (71) and locking component in sensor support rod (4), the locking component are located at the Sealing shield ring (71)
Between the movable block (3).
6. monitoring device (1) according to claim 5, it is characterised in that set on the end face of the Sealing shield ring (71)
There are crossed beam trunking (711), crossed beam trunking (711) the radially extending along the Sealing shield ring (71).
7. monitoring device (1) according to claim 6, it is characterised in that the Sealing shield ring (71) includes centre bore
(712) and from the centre bore (712) hole wall radially outward from projection (713), the projection (713) is inserted into institute
State in cabling channel (45), the crossed beam trunking (711) extends to the top of the projection (713).
8. monitoring device (1) according to claim 5, it is characterised in that the locking component includes compressing back-up ring (72)
And it is arranged on the nut between the compression back-up ring (72) and the movable block (3).
9. monitoring device (1) according to claim 1, it is characterised in that the sidepiece of the guidance part is provided with pilot hole
(24) it is provided with and is oriented to described on, bearing of trend extension of the pilot hole (24) along the guidance part, the movable block (3)
The locating part (8) that hole (24) is engaged.
10. monitoring device (1) according to claim 1, it is characterised in that the position adjustment component (6) includes and institute
State the power transmission shaft (61) of movable block (3) drive connection.
11. monitoring device (1) according to claim 10, it is characterised in that the power transmission shaft (61) and the movable block
(3) screw-driven is connected between.
12. monitoring device (1) according to claim 11, it is characterised in that the position adjustment component (6) also includes edge
Two contiguous blocks (62) that the power transmission shaft (61) is axially arranged side by side, the contiguous block (62) is used for and the fulcrum bearing (2)
It is connected, the movable block (3) is arranged between described two contiguous blocks (62).
13. monitoring device (1) according to claim 1, it is characterised in that the fulcrum bearing (2) includes mounting part,
The mounting part is used to the fulcrum bearing (2) being fixed on mounting platform.
14. a kind of wind power generating set, it is characterised in that including：
Bearing (9) and the rotary shaft (10) being connected with the inner ring (92) of the rear bearing (9) afterwards, rotary shaft (10) bag
Centre bore and the through hole (101) radially extended along the rotary shaft (10) are included, the through hole (101) is connected with the centre bore
It is logical；
The fulcrum bearing (2) of monitoring device (1) any one of claim 1 to 13 is arranged at the institute of the rotary shaft (10)
State on the hole wall of centre bore, the free end (42) of the sensor support rod (4) and the sensor (5) are from the through hole
(101) pass, the sensor (5) for passing the through hole (101) is relative with the end face of the inner ring (92) of the rear bearing (9)
Set, the sensor (5) is monitored to the axial displacement of the end face of the inner ring (92) of the rear bearing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621288930.2U CN206399365U (en) | 2016-11-28 | 2016-11-28 | Monitoring device and wind power generating set for monitoring bearing axial play |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621288930.2U CN206399365U (en) | 2016-11-28 | 2016-11-28 | Monitoring device and wind power generating set for monitoring bearing axial play |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206399365U true CN206399365U (en) | 2017-08-11 |
Family
ID=59508585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621288930.2U Active CN206399365U (en) | 2016-11-28 | 2016-11-28 | Monitoring device and wind power generating set for monitoring bearing axial play |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206399365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832957A (en) * | 2021-01-21 | 2021-05-25 | 上海电气风电集团股份有限公司 | Main bearing floating performance monitoring system and method and wind generating set |
| US11539317B2 (en) | 2021-04-05 | 2022-12-27 | General Electric Renovables Espana, S.L. | System and method for detecting degradation in wind turbine generator bearings |
-
2016
- 2016-11-28 CN CN201621288930.2U patent/CN206399365U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832957A (en) * | 2021-01-21 | 2021-05-25 | 上海电气风电集团股份有限公司 | Main bearing floating performance monitoring system and method and wind generating set |
| US11539317B2 (en) | 2021-04-05 | 2022-12-27 | General Electric Renovables Espana, S.L. | System and method for detecting degradation in wind turbine generator bearings |
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