CN109667726A - Wind turbines rotor tachometric survey structure, device and wind power generating set - Google Patents
Wind turbines rotor tachometric survey structure, device and wind power generating set Download PDFInfo
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- CN109667726A CN109667726A CN201710977746.1A CN201710977746A CN109667726A CN 109667726 A CN109667726 A CN 109667726A CN 201710977746 A CN201710977746 A CN 201710977746A CN 109667726 A CN109667726 A CN 109667726A
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- detection block
- wind
- pressure sensor
- wind turbines
- turbines rotor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/304—Spool rotational speed
Abstract
The embodiment of the present invention provides a kind of wind turbines rotor tachometric survey structure, device and wind power generating set, wherein, the wind-driven generator includes wheel hub or slow-speed shaft, the wind turbines rotor tachometric survey structure, it include: that the wheel hub or identical first elastomeric element of the bracket on the slow-speed shaft, detection block, structure and the second elastomeric element and pressure sensor are set；The upper end of the detection block is connect after connecting with first elastomeric element with the top of the bracket, the lower end of the detection block is connect after connecting with second elastomeric element with the pressure sensor contacts for the bottom for being fixed on the bracket.Scheme provided by the invention, can by measure detection block centripetal force, and then according between centripetal force and revolving speed relationship calculate wind wheel revolving speed, improve measurement accuracy, and simple and effective.
Description
Technical field
The present invention relates to technical field of wind power more particularly to a kind of wind turbines rotor tachometric survey structure, device and
Wind power generating set.
Background technique
In Large-scale Wind Turbines, speed-changing oar-changing type wind-driven generator is generallyd use at present, i.e., by adjusting blade
Position (also referred to as " propeller pitch angle ") control the revolving speed of wind wheel, and then control the output power of blower.In wind power generating set,
Master control system mainly realizes the maximum power tracing of wind energy according to rotation speed of fan or with reference to wind speed, so that wind energy is turned to greatest extent
It is changed to electric energy.
In the prior art, rotating speed measurement method generally uses pulse counting method, that is, passes through sensitive switch, Hall switch etc.
Detection device detects the number of unit time internal trigger sensitive switch, and then calculates revolving speed.In the slow-speed of revolution, since wind wheel turns
Fast slow, unit time internal trigger sensitive switch number is few, so as to cause measurement accuracy decline.It is surveyed currently, improving slow-speed shaft revolving speed
The method of accuracy of measurement mainly has the trigger device number for increasing triggering sensitive switch, is averaged using two sensitive switches or right
The tachometer value measured is filtered.The above method is primarily present following defect:
(1) increase the trigger device number of triggering sensitive switch: since trigger device is fixed on slow-speed shaft turntable, in circle
In all lesser situations, it is difficult to realize to increase more trigger device number, while the program will also result in increased costs；
(2) two sensitive switches are used, are averaged: because there is error in two sensitive switch measurement results,
There is no remarkable results for improving measurement accuracy for the program；
(3) be filtered to the tachometer value measured: the program only can guarantee that tachometer value is flat by filtering processing
Surely, it cannot be guaranteed measurement accuracy and improve.
Summary of the invention
A kind of wind turbines rotor tachometric survey structure, device and wind power generating set provided in an embodiment of the present invention,
By measuring the centripetal force of detection block, and then according to the revolving speed of the relationship calculating wind wheel between centripetal force and revolving speed, survey is improved
Accuracy of measurement, and simple and effective.
In order to achieve the above objectives, described the embodiment of the invention provides a kind of wind turbines rotor tachometric survey structure
Wind-driven generator includes wheel hub or slow-speed shaft, comprising: the wheel hub or bracket, detection block, knot on the slow-speed shaft is arranged in
Identical first elastomeric element of structure and the second elastomeric element and pressure sensor；The upper end of the detection block passes through and described the
It is connect after the connection of one elastomeric element with the top of the bracket, the lower end of the detection block is connect with second elastomeric element
It is connect afterwards with the pressure sensor contacts for the bottom for being fixed on the bracket.
The embodiment of the invention also provides a kind of wind turbines rotor rotation-speed measuring devices, comprising: detection block rotation angle
Acquisition module, controller and wind turbines rotor tachometric survey structure as described above are spent, the detection block rotation angle is adopted
Collect module, the rotation angle for acquisition testing block；The wind turbines rotor tachometric survey structure, for exporting the inspection
Survey the block sensing value that pressure sensor detects in rotary course；The controller is used for, according to the quality of detection block and institute
Gravity suffered by detection block described in the rotation angle calculation of detection block is stated to the compensation rate of centripetal force, and according to the compensation rate and institute
The sensing value for stating pressure sensor detection calculates centripetal force suffered by the detection block；According to the centripetal force and wind speed round
Wind speed round value is calculated in theory relation.
The embodiment of the invention also provides a kind of wind power generating sets, comprising: wind-driven generator wind as described above is arranged
Rotate speed measuring device.
Wind turbines rotor tachometric survey structure, device and wind power generating set provided in an embodiment of the present invention, pass through
Detection block, pressure sensor and the identical elastomeric element of two structures are set on wheel hub or slow-speed shaft, utilize the rotation of wind wheel
Centripetal force principle when characteristic and detection block rotate, by measuring the centripetal force of detection block, and then according to centripetal force and revolving speed
Between relationship calculate wind wheel revolving speed, improve measurement accuracy, and simple and effective.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the application
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the centripetal force schematic illustration of object provided in an embodiment of the present invention；
Fig. 2 is wind turbines rotor tachometric survey structural schematic diagram one provided in an embodiment of the present invention；
Fig. 3 is wind turbines rotor tachometric survey structural schematic diagram two provided in an embodiment of the present invention；
Fig. 4 is busbar structure schematic diagram provided in an embodiment of the present invention；
Fig. 5 is wind turbines rotor rotation-speed measuring device structural schematic diagram provided in an embodiment of the present invention；
Fig. 6 is the gravity compensation stress analysis schematic diagram of detection block provided in an embodiment of the present invention；
Fig. 7 is wind-driven generator structure schematic diagram one provided in an embodiment of the present invention；
Fig. 8 is wind-driven generator structure schematic diagram two provided in an embodiment of the present invention.
Drawing reference numeral explanation
1- wheel hub or slow-speed shaft, 2- bracket, 3- detection block, the first elastomeric element of 4-, the second elastomeric element of 5-, 6- pressure pass
Sensor, 7- detection baffle, the first conductive bar of 8-, the second conductive bar of 9-, 310- cabin, 320- master control control cabinet, 330- slow-speed shaft,
340- wheel hub, 350- slip ring, 360- pitch control cabinet.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Fig. 1 is the centripetal force schematic illustration of object provided in an embodiment of the present invention, as shown in Figure 1, when object is along circle
When week or curve track move, the bonding force active force in the direction center of circle (center of curvature) that object is subject to is centripetal force, should
Centripetal force can be generated by any power such as elastic force, gravity, frictional force, can also be mentioned by the resultant force or its component of several power
For.According to centripetal force principle it is found that centripetal force suffered by object is related to the quality of object, radius of turn and angular speed, when
When known to the quality of object, radius of turn and centripetal force suffered by it, object rotation can be calculated by centripetal force formula
The angular speed turned.
Above-mentioned centripetal force principle is utilized in wind turbines rotor tachometric survey structure provided in an embodiment of the present invention,
Its core concept is: by the way that detection block, pressure sensor and the identical elasticity of two structures are arranged on wheel hub or slow-speed shaft
Component, using wind wheel rotational characteristic and detection block rotate when centripetal force principle, the measured value of combination pressure sensor and
The self gravity compensation of detection block obtains the centripetal force (hereinafter referred to as " centripetal force ") of detection block, and then passes through centripetal force formula meter
The angular speed for calculating detection block, can be obtained the revolving speed of wind wheel, to improve measurement accuracy, and simple and effective.
The technical solution of the application is further illustrated below by multiple embodiments.
Embodiment one
Fig. 2 is wind turbines rotor tachometric survey structural schematic diagram one provided in an embodiment of the present invention, of the invention real
It applies in example, is based on above-mentioned centripetal force principle, which is mainly used for measuring slow-speed shaft or wheel hub on detection block position
To its holding power, which is directed toward wheel hub or slow-speed shaft axis of rotation.As shown in Fig. 2, wind-driven generator includes wheel hub or low
Fast axis 1 (is designated generally by 1 to wheel hub or slow-speed shaft in the present embodiment, specifically can be slow-speed shaft 330 and wheel in Fig. 7 or Fig. 8
Hub 340), wind turbines rotor tachometric survey structure includes: the bracket 2 being arranged on wheel hub or slow-speed shaft 1, detection block 3, knot
Identical first elastomeric element 4 of structure and the second elastomeric element 5 and pressure sensor 6.
Specifically, as shown in Fig. 2, bracket 2 is set on the inner sidewall or lateral wall of wheel hub or slow-speed shaft 1, and it is settable
For various structures, either totally enclosed hollow cavity structure, or the frame structure of hollow out.First elastomeric element 4
A variety of elastic materials can be used with the second elastomeric element 5, if the material there is elasticity, can deformation occurs and can be used for detecting bullet
Power size, such as spring.In addition, the first elastomeric element 4 is identical as 5 structure of the second elastomeric element, i.e., the two is using identical
Elastic material is to ensure that coefficient of elasticity is identical, and equal length both when deformation occurs.In this way, when the first elastomeric element 4 with
Both second elastomeric element 5 is when deformation occurs, since the two coefficient of elasticity is equal with variation length, can be obtained according to Hooke's law
Elastic force is equal.In conjunction with Newton's third law, i.e. active force and reaction force between two objects are always equal in magnitude, side
To on the contrary, acting on point-blank, accordingly, the sensing value measured by pressure sensor 6 and the gravity benefit for combining detection block 3
It repays and can be obtained centripetal force, it is easy to operate without measuring the variation length of the first elastomeric element 4 and the second elastomeric element 5.
The upper end of detection block 3 is connect after connecting with the first elastomeric element 4 with the top of bracket 2, the lower end of detection block 3 passes through
It is connected after being connect with the second elastomeric element 5 with the pressure sensor 6 for the bottom for being fixed on bracket 2.
Specifically, the top of bracket 2 and the upper end of detection block 3 are the one of the axle center of relatively close wheel hub or slow-speed shaft 1
End, the bottom of bracket 2 and the lower end of detection block 3 are the one end for being relatively distant from the axle center of wheel hub or slow-speed shaft 1.As shown in Fig. 2,
The both ends of first elastomeric element 4 are connect with the upper end at the top of bracket 2 and detection block 3 respectively, which all can be consolidate
Fixed connection；The both ends of second elastomeric element 5 are connect with the lower end of detection block 3 and pressure sensor 6 respectively, and pressure sensor 6
In the bottom of bracket 2, wherein one end of the second elastomeric element 5 can be fixedly connected with the lower end of detection block 3, the other end and pressure
Sensor 6 connects, and when wheel hub or the rotation of slow-speed shaft 1, detection block 3 is moved to the bottom of bracket 2 under the influence of centrifugal force
Dynamic, the first elastomeric element 4 elongates at this time, and the second elastomeric element 5 shortens and generates pressure, therefore the second bullet to pressure sensor 6
Property component 5 need to connect with pressure sensor 6 and can accurately measure its sensing value.
Integrally it is directed toward the axis of rotation direction of wheel hub or slow-speed shaft 1 in the extended line direction at the bottom of bracket 2 to top.
Specifically, using the contact point of bracket 2 and wheel hub or slow-speed shaft 1 as point of contact, the extended line of the bottom of bracket 2 to top
(i.e. the axis of rotation direction of direction wheel hub or slow-speed shaft 1) vertical with the tangent line at excessively above-mentioned point of contact.In practical application scene,
The settable extended line direction and direction axis of rotation direction C in a certain angle, correspondingly, being needed when calculating spring force
Using actual sensed value multiplied by cosC as final sensing value.
Further, in above-mentioned wind turbines rotor tachometric survey structure, bracket 2 is hollow cavity, detection block 3, the
One elastomeric element 4 and the second elastomeric element 5 and pressure sensor 6 are located inside hollow cavity.
Specifically, bracket 2 can be hollow cavity structure, as shown in Fig. 2, can set gradually inside it from top to bottom
First elastomeric element 4, detection block 3, the second elastomeric element 5, pressure sensor 6, bracket 2 can play above-mentioned each component of its inside
To good fixed function.
Wind turbines rotor tachometric survey structure provided in an embodiment of the present invention, by being arranged on wheel hub or slow-speed shaft
Detection block, pressure sensor and the identical elastomeric element of two structures, when being rotated using the rotational characteristic and detection block of wind wheel
Centripetal force principle, can by measure detection block centripetal force, and then according between centripetal force and revolving speed relationship calculate wind
The revolving speed of wheel improves measurement accuracy, and simple and effective.
Embodiment two
On the basis of the above embodiments, the present embodiment will carry out wind turbines rotor tachometric survey structure further
Refinement.Fig. 3 is wind turbines rotor tachometric survey structural schematic diagram two provided in an embodiment of the present invention, as shown in figure 3, above-mentioned
In wind speed round measurement structure, one end of the face pressure sensor 6 of the second elastomeric element 5 be provided with detection baffle 7, for
The contact of pressure sensor 6 is to detect the elastic force that the second elastomeric element 5 generates.
Specifically, due between the second elastomeric element 5 and pressure sensor 6 contact area it is smaller, be easily reduced pressure biography
The measurement accuracy of sensor 6, therefore baffle 7 can be will test and be set between the second elastomeric element 5 and pressure sensor 6, so may be used
To expand the second elastomeric element 5 to the active area of the pressure of pressure sensor 6, to improve measurement accuracy.
Further, Fig. 4 is busbar structure schematic diagram provided in an embodiment of the present invention, as shown in figure 4, the bottom of bracket 2
Portion is vertically arranged with two conductive bars insulated from each other (the first conductive bar 8 and the second conductive bar 9), and the first conductive bar 8 and
The top of two conductive bars 9 and the lower end surface face of detection block 3, and the first end face of face is the identical conductive material of height, the
Other surfaces part on one conductive bar 8 and the second conductive bar 9 except first end face is insulating materials.
Specifically, as shown in figure 4, the first conductive bar 8 and the second conductive bar 9 are vertically arranged at the bottom of bracket 2, and it is located at
The two sides of second elastomeric element 5, the top of two conductive bars and the face of 3 face of detection block are above-mentioned first end face, and first leads
The first end face of electric item 8 and the second conductive bar 9 height is identical and be conductive material, in addition to first end face, two conductive bars
Remaining surface is insulating materials.
It should be noted that length of second elastomeric element 5 when deformation occurs should be greater than the height of two conductive bars, with
Ensure that, when wind speed round is smaller or in normal range (NR), the detection block 3 of 5 upper end of the second elastomeric element connection can not be led with first
The contact of the top of electric item 8 and the second conductive bar 9.In addition, the top of above-mentioned conductive bar is the one end for being directed toward 2 top of bracket, detection
The lower end surface of block 3 is the end face towards 2 bottom of bracket.
First conductive bar 8 and the second conductive bar 9 are connected in an external circuits；There is conductive material in detection block 3, be used for
After detection block 3 is contacted with the first conductive bar 8 and the second conductive bar 9 external circuits are connected.
Specifically, two conductive bars are connected in an external circuits, and detection block 3 may be configured as conductive material, or wherein
Setting unit conductive material, so that the lower end surface of detection block 3 can after contacting with the first conductive bar 8 and the second conductive bar 9
Form access.
In practical application scene, when wind speed round is larger, detection block 3 can generate biggish centrifugal force, the first elasticity
The deformation quantity of component 4 and the second elastomeric element 5 also increases with it, when its deformation quantity reaches preset value, the lower end surface of detection block 3
It is contacted with the first end face of the first conductive bar 8 and the second conductive bar 9, so that external circuits are connected, and then triggers disorderly closedown.
Wind turbines rotor tachometric survey structure provided in an embodiment of the present invention, by being arranged on wheel hub or slow-speed shaft
Detection block, pressure sensor and the identical elastomeric element of two structures, when being rotated using the rotational characteristic and detection block of wind wheel
Centripetal force principle, can by measure detection block centripetal force, and then according between centripetal force and revolving speed relationship calculate wind
The revolving speed of wheel improves measurement accuracy, and simple and effective.
Further, also detection gear can be arranged in one end of the second elastomeric element face pressure sensor in the embodiment of the present invention
Plate, for increasing the forced area of pressure sensor, to further improve measurement accuracy.
Further, also two conductive bars can be arranged in the bottom of bracket in the embodiment of the present invention, when wind speed round is excessive
External circuits can be made to be connected, to trigger disorderly closedown, only wind-driven generator does not provide overspeed protection, also reduces elasticity
The loss of component improves the operational safety of wind speed round measurement structure.
Embodiment three
As shown in figure 5, being wind turbines rotor rotation-speed measuring device structural schematic diagram provided in an embodiment of the present invention, packet
Include: detection block rotates angle acquisition module 110, controller 130 and above-mentioned wind turbines rotor tachometric survey structure 120.
Detection block rotates angle acquisition module 110, the rotation angle for acquisition testing block 3.
Specifically, the centripetal force that detection block 3 is subject in rotary course further includes the gravity compensation of detection block 3 itself, i.e.,
Component of the gravity suffered by detection block 3 on the axis direction that it is directed toward wheel hub or slow-speed shaft 1.The size and detection block 3 of the component
Gravity to it to rotate angle related, therefore need the rotation angle of acquisition testing block 3, can specifically be accomplished in several ways, example
The rotation angle of detection block 3 is such as obtained using the method combined close to switch with detection block 3.
Wind turbines rotor tachometric survey structure 120, for exporting pressure sensor 6 in rotary course of detection block 3
The sensing value of detection.The structure has illustrated in example 1 and example 2.
Controller 130, for the weight according to suffered by the rotation angle calculation detection block 3 of the quality of detection block 3 and detection block 3
Power to the compensation rate of centripetal force, and the sensing value detected according to compensation rate with pressure sensor 6 calculate it is centripetal suffered by detection block 3
Power；According to the theory relation of centripetal force and wind speed round, wind speed round value is calculated.
Specifically, the centripetal force size that detection block 3 is subject in rotary course includes the gravity compensation amount of its own, first
Elastomeric element 4 is to its pulling force and the second elastomeric element 5 to its holding power, according to Newton's third law, above-mentioned pulling force and branch
Holding force is equal in magnitude, as the sensing value of pressure sensor 6, therefore, can be according to the sensing value and detection block 3 of pressure sensor 6
Gravity compensation measure centripetal force suffered by detection block 3.It is above-mentioned to have been mentioned, according to centripetal force principle, centripetal force size with
The quality of detection block 3, radius of turn and angular speed are related, when the quality of detection block 3, radius of turn and suffered by it to
When known to mental and physical efforts, the angular speed of the rotation of detection block 3 can be calculated by centripetal force formula, so that the revolving speed of wind wheel be calculated
Value.
Further, as shown in fig. 6, the gravity compensation force analysis for detection block provided in an embodiment of the present invention is illustrated
Figure, the gravity according to suffered by the rotation angle calculation detection block 3 of the quality of detection block 3 and detection block 3 to the compensation rate of centripetal force,
And the centripetal force according to suffered by the sensing value calculating detection block 3 that compensation rate is detected with pressure sensor 6 includes:
According to
FTo=2FPressure+G*cos(θ)……………………………………………………(1)
Calculate centripetal force FTo；
Wherein, FPressureIt is gravity suffered by detection block 3, the rotation that θ is detection block 3 for the sensing value of the detection of pressure sensor 6, G
The vertical highest point position of angle, wheel hub or slow-speed shaft 1 is 0 angle, and is clockwise positive-angle direction.
Specifically, as shown in fig. 6, the vertical highest point position of wheel hub or slow-speed shaft 1 is to illustrate 0 degree of position, work as detection
When block 3 is located at shown position 210, gravity G suffered by detection block 3 is in the axis direction for being directed toward wheel hub or slow-speed shaft 1 along detection block 3
On component be G2, then:
G2=G*cos (θ) ... ... ... ... ... ... ... ... ... ... ... (2)
When wind wheel rotation, detection block 3 is mobile to the bottom of bracket 2 under the influence of centrifugal force, at this time the first elastic portion
Part 4 elongates, and the second elastomeric element 5 shortens, since the first elastomeric element 4 changes with the second elastomeric element 5 apart from identical, it is assumed that its
Variation distance is x, according to recklessly can law, if the coefficient of elasticity of the first elastomeric element 4 and the second elastomeric element 5 is k, then the first bullet
Elastic force F1 caused by property component 4 are as follows:
F1=kx ... ... ... ... ... ... ... ... ... ... ... ... (3)
Pulling force F2 caused by second elastomeric element 5 are as follows:
F2=kx ... ... ... ... ... ... ... ... ... ... ... ... (4)
According to Newton's third law, 5 both ends stress of the second elastomeric element is equal in magnitude, therefore the second elastomeric element 5 is produced
Raw elastic force is sensing value measured by pressure sensor 6, if the sensing value is FPressure, it can obtain:
F1=F2=FPressure……………………………………………………………(5)
Then centripetal force F suffered by detection block 3ToAre as follows:
FTo=F1+F2+G2 ... ... ... ... ... ... ... ... ... ... ... (6)
Convolution (2), formula (5) and formula (6) can obtain formula (1).
If the quality of detection block 3 is m, its angular speed is ω to detection block 3 when rotated, and the radius of wheel hub or slow-speed shaft 1 is
R can be obtained then according to centripetal force formula:
FTo=mr ω2………………………………………………………………(7)
Detection block 3 is located on wheel hub or slow-speed shaft 1, therefore the two revolving speed is equal, if wind speed round is n, can obtain:
The π of ω=2 n ... ... ... ... ... ... ... ... ... ... ... ... (8)
Convolution (1), formula (7) and formula (8), can obtain:
2FPressure+ G*cos (θ)=mr (2 π n)2………………………………………………(9)
In formula (9), in addition to wind speed round n, remaining parameter can be obtained by measurement, so can be light by calculating
Obtain wind speed round value.
Further, the wind turbines rotor tachometric survey structure being arranged on wheel hub or slow-speed shaft 1 can be also two,
And setting position differs 180 degree (position 220 and position 230 as shown in FIG. 6), according to the quality of detection block 3 and detection block 3
Rotation angle calculation detection block 3 suffered by gravity to the compensation rate of centripetal force, and detected according to compensation rate and pressure sensor 6
Sensing value calculates centripetal force suffered by detection block 3
According to
FTo=FPressure 1+FPressure 2…………………………………………………………(10)
Calculate centripetal force FTo；Wherein, FPressure 1、FPressure 2The sensing value of respectively two pressure sensors detection, two detection block institutes
It is cancelled out each other by compensation rate of the gravity to centripetal force.
Specifically, when detection block 3 is located at position 220 shown in fig. 6, suffered gravity G can be analyzed to G3 and G4,
In, the gravity compensation G3 of detection block 3 is directed toward the direction for deviating from 1 axle center of wheel hub or slow-speed shaft, if the rotation angle of detection block 3 at this time
For e, can obtain:
G3=G*cos (180 ° of-e) ... ... ... ... ... ... ... ... ... ... (11)
According to cosine function change curve it is found that with detection block 3 rotation angle change, cosine value it is positive and negative with inspection
The positive and negative just consistent of block gravity compensation is surveyed, if the rotation angle of detection block 3 is θ, i.e., when detection block 3 is rotated to shown in fig. 6
When upper half, G*cos (θ) is positive value, and when the rotation of detection block 3 to lower half shown in fig. 6, G*cos (θ) is negative value.It is based on
This, can be arranged the wind turbines rotor tachometric survey structure that two angles are 180 degree on wheel hub or slow-speed shaft 1, including but
Be not limited to it is shown in fig. 6 be set to position 220 and position 230, if FPressure 1、FPressure 2Pressure respectively at position 220 and position 230
The sensing value that sensor 6 measures, according to centripetal force principle it is found that being located at two identical inspections on same wheel hub or slow-speed shaft 1
Centripetal force suffered by survey block 3 is equal in magnitude, and convolution (1) can obtain:
FTo=[2FPressure 1+|G*cos(θ)|+2FPressure 2-|G*cos(θ)]/2……………………………(12)
According to formula (12) it is found that angle is the gravity compensation G*cos (θ) of two detection blocks 3 of 180 degree by calculating mutually
It offsets, to obtain formula (10).Based on this, then influence of the gravity to centripetal force of detection block 3 need not be considered, examine without measurement
Survey the rotation angle of block 3, the sensing value F that need to only measure by two pressure sensors 6Pressure 1And FPressure 2, wind wheel can be calculated
Tachometer value so both improves measurement accuracy, and simple and easy to do, save the cost.
Wind turbines rotor rotation-speed measuring device provided in an embodiment of the present invention rotates angle by setting detection block and adopts
Collect module, controller and wind turbines rotor tachometric survey structure, when rotating using the rotational characteristic and detection block of wind wheel
Centripetal force principle, can in conjunction with detection block self gravity compensation obtain detection block centripetal force, thus calculate wind wheel turn
Speed improves measurement accuracy, and simple and effective.
Further, two wind turbines rotor revolving speeds can be also set in wind turbines rotor rotation-speed measuring device
Measurement structure is cancelled out each other by the gravity compensation of two detection blocks, is realized the rotation angle without measuring detection block, also need not
Influence of the gravity to centripetal force for considering detection block, can be calculated wind speed round value, so that scheme is more easy, and into one
Step improves measurement accuracy.
Example IV
On the basis of a upper embodiment, the present embodiment will be to the controller in wind turbines rotor rotation-speed measuring device
130 installation site is further spread out.As shown in fig. 7, illustrating for wind-driven generator structure provided in an embodiment of the present invention
Figure one, in wind turbines rotor rotation-speed measuring device, the master control control cabinet 320 in cabin 310 is arranged in controller 130
In, be located at cabin 310 in slow-speed shaft 330 on wind turbines rotor tachometric survey structure be electrically connected, or be located at
Wind turbines rotor tachometric survey structure in wheel hub 340 is electrically connected by slip ring 350, to acquire the detection of pressure sensor 6
Sensing value.
Specifically, wheel hub 340 is connect with slow-speed shaft 330, when wind wheel rotates under the action of the forces of the wind, can drive slow-speed shaft
330 rotations, internal for installing all devices and device of pitch-controlled system, wind turbines rotor tachometric survey structure can be set
It is placed on wheel hub 340 or slow-speed shaft 330；Slip ring 350 is used to connect in wheel hub 340 with the cable in cabin 310, realizes wind wheel wheel
The distortionless connection of cable inside and outside hub 340；Master control control cabinet 320 is located inside cabin 310, for controlling wind wheel generator fortune
Row；Controller 130 may be disposed in master control control cabinet 320, with the wind-driven generator on the slow-speed shaft 330 in cabin 310
The electrical connection of wind speed round measurement structure, or pass through cunning with the wind turbines rotor tachometric survey structure being located in wheel hub 340
Ring 350 is electrically connected, for acquiring the sensing value of the detection of pressure sensor 6.
In practical application scene, when the wheel hub 340 of wind-driven generator drives slow-speed shaft 330 to rotate, wind-driven generator
Detection block 3 in wind speed round measurement structure generates centripetal force, and passes through 6 output voltage signal of pressure sensor, master control control
Cabinet 320 collects the voltage signal, to calculate the tachometer value of wind wheel.
Alternatively, controller 130 is arranged in the pitch control cabinet 360 in wheel hub 340, with the low speed being located in cabin 310
Wind turbines rotor tachometric survey structure on axis 330 is electrically connected by slip ring 350, or with the wind that is located in wheel hub 340
Power generator wind speed round measurement structure connection, to acquire the sensing value of the detection of pressure sensor 6.
Specifically, controller 130 may also be disposed in pitch control cabinet 360, in practical application scene, work as wind-power electricity generation
When the wheel hub 340 of machine drives slow-speed shaft 330 to rotate, the detection block 3 in wind turbines rotor tachometric survey structure generates centripetal
Power, and by 6 output voltage signal of pressure sensor, pitch control cabinet 360 collects the voltage signal, to calculate wind wheel
Tachometer value.
Further, it is provided with analogue collection module in controller 130, to acquire the sensing of the detection of pressure sensor 6
It is worth corresponding analog signal.
In practical application scene, the controller 130 in master control control cabinet 320 or pitch control cabinet 360 is collected
After the voltage signal that pressure sensor 6 exports, it can also be corresponded to by the analogue collection module output being set in controller 130
Analog signal be effectively saved cost without digital circuit is separately arranged.
Wind turbines rotor rotation-speed measuring device provided in an embodiment of the present invention rotates angle by setting detection block and adopts
Collect module, controller and wind turbines rotor tachometric survey structure, and controller is further refined, utilizes wind wheel
Centripetal force principle when rotational characteristic and detection block rotate, can be by measuring the centripetal force of detection block, and then according to centripetal
Relationship between power and revolving speed calculates the revolving speed of wind wheel, measurement accuracy, and simple and effective is improved, further, in controller
Middle setting analogue collection module, is effectively saved cost.
Further, the embodiment of the invention also provides a kind of wind power generating sets, comprising: is provided with above-mentioned wind-power electricity generation
Machine wind speed round measuring device.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the application, rather than its limitations；To the greatest extent
Pipe is described in detail the application referring to foregoing embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, each embodiment technology of the application that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (11)
1. a kind of wind turbines rotor tachometric survey structure, the wind-driven generator include wheel hub or slow-speed shaft, feature exists
In, comprising: the wheel hub or identical first elastomeric element of the bracket on the slow-speed shaft, detection block, structure and are set
Two elastomeric elements and pressure sensor；
The upper end of the detection block connect after connecting with first elastomeric element with the top of the bracket, the detection block
Lower end after being connect with second elastomeric element be fixed on the bracket bottom the pressure sensor contacts connect
It connects.
2. wind turbines rotor tachometric survey structure according to claim 1, which is characterized in that second elastic portion
One end of pressure sensor described in the face of part is provided with detection baffle, described for detecting with the pressure sensor contacts
The elastic force that second elastomeric element generates.
3. wind turbines rotor tachometric survey structure according to claim 1, which is characterized in that the bottom of the bracket
It is vertically arranged with two conductive bars insulated from each other, and the lower end surface face at the top of the conductive bar and the detection block, and
The first end face of face is the identical conductive material of height, and the other surfaces part that the first end face is removed on the conductive bar is equal
For insulating materials；Two conductive bars are connected in an external circuits；
There is conductive material in the detection block, it is described outer for making after the detection block is contacted with two conductive bars
Connect circuit conducting.
4. -3 any wind turbines rotor tachometric survey structure according to claim 1, which is characterized in that the branch
Frame is hollow cavity, the detection block, first elastomeric element and second elastomeric element and the pressure sensor
Inside the hollow cavity.
5. -3 any wind turbines rotor tachometric survey structure according to claim 1, which is characterized in that the branch
The bottom of frame is perpendicularly oriented to the axis of rotation of the wheel hub or the slow-speed shaft to the extended line direction at top.
6. a kind of wind turbines rotor rotation-speed measuring device characterized by comprising detection block rotation angle acquisition module,
Controller and the described in any item wind turbines rotor tachometric survey structures of claim 1-5,
The detection block rotates angle acquisition module, the rotation angle for acquisition testing block；
The wind turbines rotor tachometric survey structure is examined for exporting detection block pressure sensor in rotary course
The sensing value of survey；
The controller is used for, suffered by the detection block according to the rotation angle calculation of the quality of detection block and the detection block
Gravity calculates the detection to the compensation rate of centripetal force, and according to the sensing value of the compensation rate and pressure sensor detection
Centripetal force suffered by block；According to the theory relation of the centripetal force and wind speed round, wind speed round value is calculated.
7. wind turbines rotor rotation-speed measuring device according to claim 6, which is characterized in that described according to detection block
Quality and the detection block rotation angle calculation described in gravity suffered by detection block to the compensation rate of centripetal force, and according to institute
It states compensation rate and calculates centripetal force suffered by the detection block with the sensing value that the pressure sensor detects and include:
According to FTo=2FPressure+ G*cos (θ) calculates the centripetal force FTo；
Wherein, FPressureFor the pressure sensor detection sensing value, G be gravity suffered by the detection block, θ is the detection block
The vertical highest point position of rotation angle, the wheel hub or the slow-speed shaft is 0 angle, and is clockwise positive-angle side
To.
8. wind turbines rotor rotation-speed measuring device according to claim 6, which is characterized in that be arranged in the wheel hub
Or the wind turbines rotor tachometric survey structure on the slow-speed shaft is two, and position is arranged and differs 180 degree,
Gravity suffered by the detection block according to the rotation angle calculation of the quality of detection block and the detection block is to centripetal
The compensation rate of power, and according to the sensing value that the compensation rate and the pressure sensor detect calculate suffered by the detection block to
Mental and physical efforts include:
According to FTo=FPressure 1+FPressure 2Calculate the centripetal force FTo；
Wherein, FPressure 1、FPressure 2Gravity pair suffered by the sensing values of respectively two pressure sensors detections, two detection blocks
The compensation rate of centripetal force is cancelled out each other.
9. according to any wind turbines rotor rotation-speed measuring device of claim 6-8, which is characterized in that
The controller is arranged in the master control control cabinet in cabin, with the wind-force on the slow-speed shaft in the cabin
Generator wind wheel tachometric survey structure electrical connection, or be located at the wheel hub in wind turbines rotor tachometric survey structure
It is electrically connected by slip ring, to acquire the sensing value of the pressure sensor detection；Alternatively,
The controller is arranged in the pitch control cabinet in wheel hub, with the wind-force on the slow-speed shaft in the cabin
Generator wind wheel tachometric survey structure is electrically connected by the slip ring, or be located at the wheel hub in wind turbines rotor
Tachometric survey structure connection, to acquire the sensing value of the pressure sensor detection.
10. wind turbines rotor rotation-speed measuring device according to claim 9, which is characterized in that
It is provided with analogue collection module in the controller, to acquire the corresponding mould of sensing value of the pressure sensor detection
Quasi- signal.
11. a kind of wind power generating set characterized by comprising be provided with the described in any item wind-force hairs of claim 6-10
Motor wind wheel rotation-speed measuring device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710977746.1A CN109667726B (en) | 2017-10-17 | 2017-10-17 | Wind turbine rotating speed measuring structure and device of wind turbine generator and wind turbine generator set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710977746.1A CN109667726B (en) | 2017-10-17 | 2017-10-17 | Wind turbine rotating speed measuring structure and device of wind turbine generator and wind turbine generator set |
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| CN109667726B CN109667726B (en) | 2020-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986606A (en) * | 2021-03-11 | 2021-06-18 | 铜陵有色金属集团股份有限公司工程技术分公司 | Fan speed and acceleration tester |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2564722A1 (en) * | 2005-10-31 | 2007-04-30 | General Electric Company | Wind turbine systems, monitoring systems and processes for monitoring stress in a wind turbine blade |
| WO2008135789A2 (en) * | 2007-05-04 | 2008-11-13 | Insensys Limited | Wind turbine monitoring |
| WO2010109238A2 (en) * | 2009-03-24 | 2010-09-30 | Kinetic Harvest Limited | Automatic pitch control for hawt wind turbines |
| CN101900741A (en) * | 2008-12-09 | 2010-12-01 | 西门子公司 | Arrangement to detect a high rotational-speed of a blade |
| CN201896925U (en) * | 2010-11-16 | 2011-07-13 | 吴江市金茂五金有限公司 | Self-measuring speed gear |
| CN201953561U (en) * | 2010-12-13 | 2011-08-31 | 西门子公司 | Rotor over-speed detection device |
| CN106286154A (en) * | 2016-09-28 | 2017-01-04 | 北京天诚同创电气有限公司 | Wind turbines rotor azimuthal measurement system |
| CN106427831A (en) * | 2016-08-30 | 2017-02-22 | 明岐铝轮毂仪征有限公司 | Wheel hub capable of monitoring rotating speed |
-
2017
- 2017-10-17 CN CN201710977746.1A patent/CN109667726B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2564722A1 (en) * | 2005-10-31 | 2007-04-30 | General Electric Company | Wind turbine systems, monitoring systems and processes for monitoring stress in a wind turbine blade |
| WO2008135789A2 (en) * | 2007-05-04 | 2008-11-13 | Insensys Limited | Wind turbine monitoring |
| CN101900741A (en) * | 2008-12-09 | 2010-12-01 | 西门子公司 | Arrangement to detect a high rotational-speed of a blade |
| WO2010109238A2 (en) * | 2009-03-24 | 2010-09-30 | Kinetic Harvest Limited | Automatic pitch control for hawt wind turbines |
| CN201896925U (en) * | 2010-11-16 | 2011-07-13 | 吴江市金茂五金有限公司 | Self-measuring speed gear |
| CN201953561U (en) * | 2010-12-13 | 2011-08-31 | 西门子公司 | Rotor over-speed detection device |
| CN106427831A (en) * | 2016-08-30 | 2017-02-22 | 明岐铝轮毂仪征有限公司 | Wheel hub capable of monitoring rotating speed |
| CN106286154A (en) * | 2016-09-28 | 2017-01-04 | 北京天诚同创电气有限公司 | Wind turbines rotor azimuthal measurement system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986606A (en) * | 2021-03-11 | 2021-06-18 | 铜陵有色金属集团股份有限公司工程技术分公司 | Fan speed and acceleration tester |
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|---|---|
| CN109667726B (en) | 2020-09-25 |
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