CN112963315B - Blade of wind generating set, detection device and method - Google Patents

Blade of wind generating set, detection device and method Download PDF

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Publication number
CN112963315B
CN112963315B CN202110391169.4A CN202110391169A CN112963315B CN 112963315 B CN112963315 B CN 112963315B CN 202110391169 A CN202110391169 A CN 202110391169A CN 112963315 B CN112963315 B CN 112963315B
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distance
blade
row
main beam
measuring light
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CN112963315A (en
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郭辉
缪骏
朱志权
潘祖金
归佳寅
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Shanghai Electric Wind Power Group Co Ltd
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Shanghai Electric Wind Power Group Co Ltd
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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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention provides a blade of a wind generating set, a detection device and a detection method, wherein the detection device is used for detecting deformation information of a section of the blade of the wind generating set along the span direction, the detection device comprises a plurality of distance meters and a control unit, the plurality of distance meters are arranged at positions close to blade roots of the blade, each distance meter emits measuring light rays in the same specific direction, and the measuring light rays are incident into a cavity formed by a web plate of the blade and a main beam; the control unit is electrically connected with each distance meter; the measuring light rays in the specific direction emitted by each distance meter are parallel to the unfolding direction of the blade, and when the blade is not deformed, the measuring light rays in the specific direction are parallel to the web and all irradiate on the main beam of the suction surface of the blade; when the blade rotates, the control unit is used for determining deformation information of the section of the blade where the current irradiation position of the measuring light of each distance meter is located according to the distance information detected by each distance meter.

Description

Blade of wind generating set, detection device and method
Technical Field
The invention relates to the field of wind generating sets, in particular to a blade of a wind generating set, a detection device and a detection method.
Background
With the increasing size of the blades, the deformation of the blades becomes a key factor for blade design, but the deformation of the blades only depends on the calculation result of a software theory, and how the deformation is unknown in the actual operation process of a wind field is not important for verifying the design scheme. The real-time monitoring of the blade deformation of the wind generating set is still a big difficulty, and no mature and effective method can carry out real-time and all-directional monitoring on the blade deformation, so that the real-time monitoring technology of the blade deformation becomes an important technology to be broken through.
At present, two strategies exist in the industry to monitor blade deformation, the first strategy is to monitor only blade clearance, namely the distance between a blade tip and a collapsed cylinder surface when the blade runs to the position of a tower cylinder, deformation of the blade at other azimuth angles is not concerned, the strategy is relatively easy to realize, and the monitoring difficulty is reduced. For monitoring the clearance of the blade, two relatively effective methods are available at present, the first method is to install a plurality of millimeter wave radars or engine room radars on a tower barrel to monitor the distance from the blade tip to the tower barrel, and the second method is to install a camera on the engine room to shoot the gesture of the blade passing through the tower barrel and monitor the distance from the blade tip to the tower barrel through image recognition. Whether the sensor is installed on a tower or under a cabin, the sensor must be exposed outdoors, and the monitoring result may be affected when extreme weather, such as heavy rain, snow, ice, frost and the like, occurs.
The second route is to monitor the omnibearing real-time deformation of the blade, the realization difficulty of the route is high, one method is to install strain gauges on a plurality of sections of the blade and calculate the real-time deformation of the blade through integration, but because the deformation structure of the blade is very complex, the result measured by the strain gauges is difficult to identify whether the measured strain is caused by waving direction deformation or swing array direction deformation, and the strain gauges are sensitive to temperature, and even if temperature compensation is adopted, the influence of the temperature is difficult to completely eliminate, the strain error of the blade monitored by the scheme is large, and the reliability of the monitoring result is low.
Disclosure of Invention
The invention provides a blade of a wind generating set, a detection device and a detection method.
Specifically, the invention is realized by the following technical scheme:
according to a first aspect of embodiments of the present invention, there is provided a detection apparatus for detecting deformation information of a blade section of a wind turbine generator system, the detection apparatus including:
the distance measuring instruments are arranged at positions close to blade roots of the blades, each distance measuring instrument emits measuring light rays in the same specific direction, and the measuring light rays are incident into a cavity formed by a web plate of the blade and a main beam; and
the control unit is electrically connected with each distance meter;
the measuring light rays in the specific direction emitted by each distance meter are parallel to the unfolding direction of the blade, and when the blade is not deformed, the measuring light rays in the specific direction are parallel to the web and irradiate on the main beam of the suction surface of the blade;
when the blade rotates, the control unit is used for determining deformation information of the blade section where the current irradiation position of the measuring light of each distance meter is located according to the distance information detected by each distance meter.
Optionally, the deformation information includes at least one of a deformation amount and a deformation direction.
Optionally, at least two of the plurality of distance meters are arranged at intervals along a first direction of the blade, where the first direction is a swing direction of the blade.
Optionally, at least two of the plurality of distance meters are arranged at intervals along a second direction of the blade, and the second direction is a flapping direction of the blade.
Optionally, the at least two distance meters arranged at intervals along the first direction of the blade and the at least two distance meters arranged at intervals along the second direction form a rectangular array with multiple rows and columns.
Optionally, distances between the distance meters arranged at intervals in the first direction and the second direction of the blade are respectively equal, a distance from the distance meter in the first row of the rectangular array to the web plate adjacent to the distance meter in the last row of the rectangular array is equal to a distance from the distance meter in the first row of the rectangular array to the main beam adjacent to the distance meter in the last row of the rectangular array.
Optionally, the control unit is specifically configured to:
determining the current irradiation position of the measuring light of each distance meter according to the distance information detected by each distance meter;
and determining deformation information of the blade section where the current irradiation position is located according to the current irradiation position and the vertical distance between the measuring light of the corresponding distance meter and the current irradiation position when the blade is not deformed.
Optionally, the control unit is specifically configured to:
comparing whether the distance information detected by the distance measuring instruments in the same row is equal, and if the distance information detected by the distance measuring instruments in the same row is equal, judging that the measuring light of the distance measuring instruments in the row irradiates the web; otherwise, judging that the measuring light of the line of distance meters irradiates on the main beam; and
comparing whether the distance information detected by the distance measuring instruments in the same row is equal, and if the distance information detected by the distance measuring instruments in the same row is equal, judging that the measuring light of the distance measuring instrument in the row irradiates on the main beam; otherwise, judging that the measuring light of the line of the distance meter irradiates on the web.
Optionally, the control unit is specifically configured to:
if the measuring light of the distance measuring instruments in the same row irradiates on the web, whether the measuring light of the distance measuring instruments in the row irradiates on the rear edge web or the front edge web is further judged according to the number of the rows with the same distance information.
Optionally, the control unit is specifically configured to:
if the number of the rows with the equal distance information is smaller than the total number of the rows, comparing the distance from the distance meter of the outermost row in the rows with the equal distance information to the rear edge web with the distance from the distance meter of the outermost row to the front edge web, if the distance from the distance meter of the outermost row to the rear edge web is smaller than the distance from the distance meter of the outermost row to the front edge web, irradiating the measuring light rays of the distance meters of the rows with the equal distance information to the rear edge web, and otherwise, irradiating the measuring light rays of the distance meters of the rows with the equal distance information to the front edge web;
if the number of the rows with equal distance information is equal to the total number of the rows, judging the distance information detected by each row of distance meters, and if the distance information detected by each row of distance meters is sequentially reduced from the rear edge web to the front edge web, irradiating the measuring light rays of the distance meters with the equal distance information on the front edge web; if the distance information detected by each row of distance measuring instruments is sequentially increased in the direction from the rear edge web plate to the front edge web plate, the measuring light rays of the rows of distance measuring instruments with the same distance information are all irradiated on the rear edge web plate.
Optionally, the control unit is specifically configured to:
if the measuring light of the distance measuring instruments in the same row irradiates on the web plate, comparing the distance information detected by the distance measuring instruments in each row in the row, and if the distance information detected by the distance measuring instruments in each row in the row sequentially decreases from the rear edge web plate to the front edge web plate, irradiating the measuring light of the distance measuring instruments in the row on the front edge web plate; if the distance information detected by the distance meters in each row in the direction from the rear edge web plate to the front edge web plate is sequentially increased, the measuring light of the distance meters in the row irradiates on the rear edge web plate.
Optionally, the control unit is specifically configured to:
if the measuring light of the distance measuring instruments in the same row irradiates on the main beam, whether the measuring light of the distance measuring instruments in the row irradiates on the suction surface main beam or the pressure surface main beam is further judged according to the number of the rows with the same distance information.
Optionally, the control unit is specifically configured to:
if the number of the rows with the equal distance information is smaller than the total number of the rows, comparing the distance from the distance meter of the outermost row in the rows with the equal distance information to the pressure surface main beam with the distance from the distance meter of the outermost row to the suction surface main beam, if the distance from the distance meter of the outermost row to the pressure surface main beam is smaller than the distance from the distance meter of the outermost row to the suction surface main beam, the measuring light rays of the distance meters of the rows with the equal distance information are all irradiated on the pressure surface main beam, otherwise, the measuring light rays of the distance meters of the rows with the equal distance information are all irradiated on the suction surface main beam;
if the number of rows with equal distance information is equal to the total number of rows, judging the size of distance information detected by each distance meter, and if the distance information detected by each distance meter is sequentially reduced from the pressure surface main beam to the suction surface main beam, irradiating the measuring light of the distance meters of the rows with equal distance information on the suction surface main beam; if the distance information detected by each distance meter is sequentially increased from the pressure surface main beam to the suction surface main beam, the measuring light of the distance meters in the rows with the same distance information size irradiates on the pressure surface main beam.
Optionally, the control unit is specifically configured to:
if the measuring light of the distance measuring instruments in the same row irradiates on the main beam, comparing the distance information detected by the distance measuring instruments in each row in the row, and if the distance information detected by the distance measuring instruments in each row in the row is sequentially reduced from the pressure surface main beam to the suction surface main beam, irradiating the measuring light of the distance measuring instruments in the row on the suction surface main beam; if the distance information detected by the range finders in each row in the row is sequentially increased in the direction from the pressure surface main beam to the suction surface main beam, the measuring light of the range finders in the row irradiates on the pressure surface main beam.
Optionally, the control unit is specifically configured to:
and if the current irradiation position is a web plate, the deformation quantity of the cross section of the blade at the current irradiation position in the swing matrix direction is the vertical distance between the measuring light corresponding to the distance meter and the current irradiation position when the blade is not deformed.
Optionally, the control unit is specifically configured to:
if the current irradiation position is a main beam, the deformation of the blade section of the current irradiation position in the waving direction is the vertical distance between the measuring light corresponding to the distance meter and the current irradiation position when the blade is not deformed.
Optionally, when the blade is not deformed, the vertical distance between the measuring light of each distance meter and the position of the different blade sections on the main beam and/or the vertical distance between the measuring light of each distance meter and the web is calibrated in advance when the blade is not deformed.
Optionally, the rangefinder is a laser rangefinder.
Optionally, the detection device further includes an installation frame, the installation frame is disposed on one side of the baffle of the blade root, which faces the blade tip, and the distance measuring instruments are installed on the installation frame.
According to a second aspect of embodiments of the present invention, there is provided a blade of a wind turbine generator system, comprising:
a blade main body; and
the detection apparatus of any one of the first aspect, housed within the blade body.
According to a third aspect of the embodiments of the present invention, there is provided a detection method for detecting deformation information of a blade of a wind turbine generator system along a spanwise cross section, the blade includes a plurality of distance meters installed near a blade root of the blade, each distance meter emits a measurement light in a same specific direction, the measurement light is incident into a cavity formed by a web and a main beam of the blade, the measurement light emitted by each distance meter in the specific direction is parallel to the spanwise direction of the blade, and the measurement light in each specific direction is parallel to the web and is irradiated on the main beam of a suction surface of the blade when the blade is not deformed; the method comprises the following steps:
acquiring distance information detected by each distance meter when the blade rotates;
and determining deformation information of the section of the blade where the current irradiation position of the measuring light of each distance meter is located according to the distance information detected by each distance meter when the blade rotates.
According to the technical scheme provided by the embodiment of the invention, by utilizing the characteristic that when the blade is not deformed, the vertical surface of the web plate is a plane or an approximate plane, a plurality of distance measuring instruments are arrayed at the position of the blade root, measuring light rays of the distance measuring instruments irradiate in a cavity formed by the web plate and the main beam along the length direction of the blade, when the blade is not deformed due to the pre-bending of the blade, all the measuring light rays can irradiate on the main beam of the suction surface of the blade, when the blade rotates and deforms, the deformation of different sizes of the blade can be generated along with the different stress in the first direction and the second direction, the position irradiated by the measuring light rays can be changed, the measuring light rays irradiate on the web plate or the main beam, and according to the distance information measured by all the distance measuring instruments and by utilizing the characteristic that the vertical surface of the web plate is a plane, the deformation information of the section of the blade at which the current irradiation position of each measuring light ray can be calculated, the method has the advantages that the deformation of the blade is monitored in real time, theoretical calculation can be verified, pneumatic and structural optimization design of the blade and accuracy of load calculation are facilitated, reliability of blade design is improved, and technical support is provided for further cost reduction of the blade; moreover, the clearance of the blades can be monitored in real time, and when the blades are deformed too much, information can be fed back to the main control of the wind generating set in time, so that the blades are changed in advance, and the blades are prevented from hitting a tower; in addition, the deformation information of the blades in actual operation is mastered, the pneumatic unbalance of the wind wheel blades can be identified, and the pneumatic load unbalance information of the blades can be provided for the independent pitch control technology; when a certain blade is obviously damaged or the rigidity is attenuated, the deformation of the blade deviates from the normal range, so that the online early warning can be provided for the timely maintenance of the blade, and the fracture risk of the blade is greatly reduced; the method is simple and effective, easy to implement, low in cost, convenient to popularize and applicable to large-scale batch application, and solves the problems of deformation real-time monitoring and fault alarming in the operation process of the blades of the large-scale wind generating set.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic structural view of a blade of a wind turbine generator set according to an exemplary embodiment of the present invention;
FIG. 2 is a block diagram illustrating the structure of a detection device according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the position relationship between the range finder and the main beam and web of a detection device according to an exemplary embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a control unit for determining deformation information of a blade section where a current irradiation position of a measuring light of each distance meter is located according to an exemplary embodiment of the present invention;
FIG. 5 is a comparison of a suction side main beam before and after deformation in accordance with an exemplary embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating an arrangement of a detection device according to an exemplary embodiment of the present invention;
fig. 7 is a flowchart illustrating a detection method according to an exemplary embodiment of the present invention.
Reference numerals:
100. a main beam; 110. a suction side main beam; 120. a pressure surface main beam; 200. a web; 210. a leading edge web; 220. a trailing edge web; 10. a range finder; 11. a first range finder; 12. a second rangefinder; 13. a third range finder; 14. a fourth rangefinder; 20. a control unit; 30. and (7) mounting frames.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The blade, the detection device and the method of the wind generating set of the present invention are described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
The embodiment of the invention provides a wind generating set which can comprise a tower, an impeller, a cabin and a generator.
The blade can comprise a blade main body and a detection device, wherein the detection device is accommodated in the blade main body and is used for detecting the deformation information of the blade of the wind generating set along the section of the blade in the spanwise direction.
Referring to fig. 1 and 3, a blade body according to an embodiment of the present invention includes a main beam 100, a web 200, and a shell. Further, the spar 100 includes a suction side spar 110 and a pressure side spar 120, and the web 200 includes a leading edge web 210 and a trailing edge web 220.
Hereinafter, the structure of the detecting device of the embodiment of the present invention will be described in detail.
Referring to fig. 1 to 3, a detection apparatus according to an embodiment of the present invention may include a plurality of distance meters 10 and a control unit 20, where the number of the distance meters 10 is multiple, and the plurality of distance meters 10 according to an embodiment of the present invention are installed at a blade root of a blade, in an embodiment of the present invention, a first direction and a second direction are perpendicular to a length direction of the blade, the first direction and the second direction are perpendicular to each other, and each of the distance meters 10 emits a measurement light in a same specific direction, and the measurement light is incident into a cavity formed by a web 200 and a main beam 100. The control unit 20 is electrically connected to each distance meter 10, and the control unit 20 may control each distance meter 10 to operate, and may also obtain distance information detected by the distance meter 10.
In the embodiment of the present invention, the specific direction of the measuring light emitted by each distance meter 10 is parallel to the span direction of the blade, and when the blade is not deformed, the measuring light is parallel to the web 200 and is irradiated on the main beam 110 of the suction surface of the blade. It should be noted that, in the embodiment of the present invention, the direction of the measuring light emitted by each distance meter 10 is not changed, and the emitting direction of each distance meter 10 can ensure that the measuring light irradiates the main beam of the suction surface when the blade is not deformed. Further, the control unit 20 is configured to determine deformation information of the cross section of the blade where the current irradiation position of the measuring light of each distance meter 10 is located according to the distance information detected by each distance meter 10 when the blade rotates.
The embodiment of the invention utilizes the characteristic that when the blade is not deformed, the vertical surface of the web plate is a plane or an approximate plane, a plurality of distance measuring instruments 10 are arranged at the position of the blade root in an array manner, measuring light rays of the distance measuring instruments 10 irradiate in a cavity formed by the web plate 200 and the main beam 100 along the length direction of the blade, when the blade is not deformed due to the pre-bending of the blade, all the measuring light rays can irradiate on the main beam 110 of the suction surface of the blade, when the blade rotates and deforms, the deformation of different sizes of the blade can be generated along with the different stress sizes in the first direction and the second direction, the position irradiated by the measuring light rays can be changed, the measuring light rays irradiate on the web plate 200 or the main beam 100, according to the distance information measured by all the distance measuring instruments 10 and by utilizing the characteristic that the vertical surface of the web plate is a plane, the deformation information of the section of the blade at the current irradiation position of each measuring light ray can be calculated, the method has the advantages that the deformation of the blade is monitored in real time, theoretical calculation can be verified, pneumatic and structural optimization design of the blade and accuracy of load calculation are facilitated, reliability of blade design is improved, and technical support is provided for further cost reduction of the blade; moreover, the clearance of the blades can be monitored in real time, and when the blades are deformed too much, information can be fed back to the main control of the wind generating set in time, so that the blades are changed in advance, and the blades are prevented from hitting a tower; in addition, the deformation information of the blades in actual operation is mastered, the pneumatic unbalance of the wind wheel blades can be identified, and the pneumatic load unbalance information of the blades can be provided for the independent pitch control technology; when a certain blade is obviously damaged or the rigidity is attenuated, the deformation of the blade deviates from the normal range, so that the online early warning can be provided for the timely maintenance of the blade, and the fracture risk of the blade is greatly reduced; the method is simple and effective, easy to implement, low in cost, convenient to popularize and applicable to large-scale batch application, and solves the problems of deformation real-time monitoring and fault alarming in the operation process of the blades of the large-scale wind generating set.
It should be noted that, in the embodiment of the present invention, the non-deformation of the blade may refer to a state of the blade when the blade is stationary or not under stress, or may refer to a state of the blade when the blade speed is low, where the deformation of the blade when the blade speed is low is negligible. The detection surfaces of the plurality of distance meters 10 are coplanar to unify the measurement reference, facilitating subsequent analysis.
Optionally, at least two distance meters 10 of the plurality of distance meters 10 are arranged at intervals along a first direction of the blade, where the first direction is a swing direction of the blade.
Optionally, at least two distance meters 10 of the plurality of distance meters 10 are arranged at intervals along a second direction of the blade, and the second direction is a flapping direction of the blade.
Optionally, some of the plurality of distance meters 10 are arranged at intervals along a first direction of the blade, and another part of the distance meters 10 are arranged at intervals along a second direction of the blade, where the first direction is a swing direction of the blade, and the second direction is a swing direction of the blade.
At least two distance measuring instruments 10 arranged at intervals along the first direction of the blade and at least two distance measuring instruments 10 arranged at intervals along the second direction form a rectangular array with multiple rows and multiple columns, and the array can also be an array with other shapes, for example, the matrix is formed by staggering multiple rectangular arrays. The embodiment of the invention takes a rectangular array as an example.
Before the detection, the irradiation direction of the measuring light needs to be calibrated in advance, specifically, under the condition that the blade is static or not stressed, the irradiation direction of each measuring light is ensured to be completely consistent and parallel to the vertical surface of the web plate, due to the pre-bending of the blade, the measuring light in the same specific direction should be irradiated on the main beam 110 of the suction surface, the specific irradiation position should be consistent with a theoretical calculation value, at the moment, the distance information detected by the distance meters 10 in the same row is equal in size, and the distance information detected by the distance meters 10 in the same column is unequal in size.
The deformation information may include at least one of a deformation amount and a deformation direction, and the deformation information may include, for example, the deformation amount and the deformation direction, and the deformation direction may include at least one of a first direction and a second direction.
In the embodiment of the present invention, the distance meter 10 is a distance measuring device capable of emitting a beam of measuring light, and for example, the distance meter 10 is a laser distance meter 10, but the distance meter 10 may also be another distance measuring device capable of emitting a beam of measuring light.
The number of the distance measuring instruments 10 needs to be determined according to the number of the tested blade sections, if the deformation of two blade sections needs to be measured, at least 4 distance measuring instruments 10 are needed to be arranged into a2 x 2 matrix array; if it is desired to test the deformation of 3 blade sections, 9 rangefinders 10 are required, arranged in a3 x 3 matrix array; if it is desired to monitor the deformation of 4 blade sections in the flapwise direction and 2 blade sections in the edgewise direction, at least 8 range finders 10 are required to be arranged in a 4 x 2 matrix array.
Referring to fig. 3, the detecting device according to the embodiment of the present invention may further include a mounting frame 30, the mounting frame 30 is disposed on a side of the blade root baffle facing the blade tip, and the plurality of distance meters 10 are mounted on the mounting frame 30 to ensure that the irradiation direction of the measuring light of each distance meter 10 is parallel to the extending direction of the blade.
The mounting bracket 30 may be mounted at the end of the blade root near the hub or at other locations on the blade.
The attachment between the rangefinder 10 and the mounting frame 30 may be selected from any type of attachment known in the art.
In the embodiment of the invention, the distance between the distance measuring instruments 10 arranged at intervals along the first direction and the second direction of the blade is respectively equal, namely the distance between the distance measuring instruments 10 arranged at intervals along the first direction is equal, and the distance between the distance measuring instruments 10 arranged at intervals along the second direction is also equal, so that the measurement is simplified. In other embodiments, the distance between the distance measuring instruments 10 spaced apart along the first direction is at least partially unequal and/or the distance between the distance measuring instruments 10 spaced apart along the second direction is at least partially unequal.
It should be understood that in the embodiment of the present invention, the distance meters 10 in the same row are equidistant from the leading edge web 210, and the distance meters 10 in the same row are equidistant from the trailing edge web 220. The distance (minimum distance) from the distance measuring instrument 10 in the same row to the suction surface main beam 110 is equal, and the distance from the distance measuring instrument 10 in the same row to the pressure surface main beam 120 is also equal. It should be noted that, in the embodiment of the present invention, the distance from the distance meter 10 to the leading edge web 210 refers to the minimum distance from the distance meter 10 to the leading edge web 210, the distance from the distance meter 10 to the trailing edge web 220 refers to the minimum distance from the distance meter 10 to the trailing edge web 220, the distance from the distance meter 10 to the suction surface girder 110 refers to the minimum distance from the distance meter 10 to the suction surface girder 110, and the distance from the distance meter 10 to the pressure surface girder 120 refers to the minimum distance from the distance meter 10 to the pressure surface girder 120.
Further, the distance from the first range finder 10 of the rectangular array to the web 200 adjacent thereto is equal to the distance from the last range finder 10 to the web 200 adjacent thereto, facilitating determination of whether the current irradiation position is the leading edge web 210 or the trailing edge web 220. Illustratively, the arrangement direction of the first-row distance meters 10 to the last-row distance meters 10 in the rectangular array is consistent with the direction from the leading edge web 210 to the trailing edge web 220, and the distance from the first-row distance meters 10 to the leading edge web 210 is equal to the distance from the last-row distance meters 10 to the trailing edge web 220, so that the distance from the measuring light of the first-row distance meters 10 to the leading edge web 210 is equal to the distance from the measuring light of the last-row distance meters 10 to the trailing edge web 220.
In addition, the distance from the distance measuring instrument 10 in the first row of the rectangular array to the main beam 100 adjacent to the distance measuring instrument 10 in the last row of the rectangular array to the main beam 100 adjacent to the distance measuring instrument is equal, so that whether the current irradiation position is the suction surface main beam 110 or the pressure surface main beam 120 is conveniently determined. For example, the arrangement direction of the first-row distance meter 10 to the last-row distance meter 10 in the rectangular array is the same as the direction from the suction side main beam 110 to the pressure side main beam 120, and the distance from the first-row distance meter 10 to the suction side main beam 110 is the same as the distance from the last-row distance meter 10 to the pressure side main beam 120, so that the distance from the measuring light of the first-row distance meter 10 to the suction side main beam 110 is the same as the distance from the measuring light of the last-row distance meter 10 to the pressure side main beam 120.
Referring to fig. 3, the directions of the range finders 10 in the L1 column to the range finders 10 in the L3 column are the same as the directions from the trailing edge web 220 to the leading edge web 210, the directions of the range finders 10 in the H1 row to the H3 row are the same as the directions from the pressure surface main beam 120 to the suction surface main beam 110, the distances from the range finders 10 in the L1 column, the L2 column, and the L3 column to the leading edge web 210 are respectively equal, the distances from the range finders 10 in the L1 column, the L2 column, and the L3 column to the trailing edge web 220 are respectively equal, the distances from the range finders 10 in the H1 row, the H2 row, and the H3 row to the suction surface main beam 110 are respectively equal, and the distances from the range finders 10 in the H1 row, the H2 row, and the H3 row to the pressure surface 120 are also equal; the distance from the rangefinder 10 in column L1 to the trailing edge web 220 is equal to the distance from the rangefinder 10 in column L3 to the leading edge web 210, and the distance from the rangefinder 10 in row H1 to the pressure side rail 120 is equal to the distance from the rangefinder 10 in row H3 to the suction side rail 110.
It should be understood that the distance from the first-row range finder 10 to the web 200 adjacent thereto in the rectangular array may not be equal to the distance from the last-row range finder 10 to the web 200 adjacent thereto, and then when determining whether the current irradiation position is the leading edge web 210 or the trailing edge web 220, the reference datum may be unified according to the difference between the distance from the first-row range finder 10 to the web 200 adjacent thereto and the distance from the last-row range finder 10 to the web 200 adjacent thereto. The distance from the range finder 10 in the first row of the rectangular array to the adjacent main beam 100 thereof may not be equal to the distance from the range finder 10 in the last row of the rectangular array to the adjacent main beam 100 thereof, and subsequently, when the current irradiation position is judged to be the suction surface main beam 110 or the pressure surface main beam 120, the reference may be unified according to the difference between the distance from the range finder 10 in the first row to the adjacent main beam 100 thereof and the distance from the range finder 10 in the last row to the adjacent main beam 100 thereof.
The following embodiments further describe the distance between the distance meters 10 arranged at intervals along the first direction and the second direction of the blade as equal, the distance from the first-row distance meter 10 of the rectangular array to the web 200 adjacent to the first-row distance meter 10 is equal to the distance from the last-row distance meter 10 to the web 200 adjacent to the last-row distance meter 10, and the distance from the last-row distance meter 10 of the rectangular array to the main beam 100 adjacent to the last-row distance meter 10 is equal to the distance from the last-row distance meter 10 to the main beam 100 adjacent to the last-row distance meter.
Next, the control unit 20 analyzes the manner of determining the deformation information of the blade section at which the current irradiation position of the measuring light of each distance meter 10 is located.
Referring to fig. 4, in a possible embodiment, the determining, by the control unit 20, the deformation information of the blade section where the current irradiation position of the measuring light of each distance meter 10 is located may include the following steps:
step S41, determining the current irradiation position of the measuring light of each distance meter 10 according to the distance information detected by each distance meter 10.
The current irradiation position may include at least one of the web 200 and the spar 100, e.g., the current irradiation position may be the web 200, such as the leading edge web 210 or the trailing edge web 220; as another example, the current illumination location may be a main beam 100, such as a suction side main beam 110 or a pressure side main beam 120; as another example, the current illumination location may be the junction of the web 200 and the spar 100, such as the junction of the leading edge web 210 and the suction side spar 110.
Illustratively, the control unit 20 may include step 1) and step 2) when implementing step S41.
Step 1), comparing whether the distance information detected by the distance meters 10 in the same row is equal in size, and if the distance information detected by the distance meters 10 in the same row is equal in size, judging that the measuring light of the row of distance meters 10 irradiates on the web 200; otherwise, it is determined that the measuring light of the range finder 10 is irradiated on the main beam 100. When the blade is not deformed, the measuring light beams in the same specific direction all irradiate on the main beam 100, that is, the distance information detected by the distance measuring instruments in the same row has different sizes, for example, the distance at the uppermost position is farthest, and the distance at the lowermost position is closest. If the rangefinders in the same column detect equal distance information, it is indicated that the light is impinging on the web 200.
Step 2), comparing whether the distance information detected by the distance meters 10 in the same row is equal in size, and if the distance information detected by the distance meters 10 in the same row is equal in size, judging that the measuring light of the distance meter 10 in the row irradiates on the main beam 100; otherwise, it is judged that the measuring light of the line rangefinder 10 is irradiated on the web 200.
It should be understood that step 1) and step 2) are performed sequentially, and the specific control unit 20 may perform step 1) first and then step 2); or the control unit 20 may perform step 2) first and then step 1).
Further, if the measuring light of the range finders 10 in the same row is irradiated on the web 200, it is further determined whether the measuring light of the range finder 10 in the row is irradiated on the trailing edge web 220 or the leading edge web 210 according to the number of the rows with the same distance information. Specifically, if the number of the rows with equal distance information is less than the total number of the rows, comparing the distance from the distance meter 10 in the outermost row to the trailing edge web 220 with the distance from the distance meter 10 in the outermost row to the leading edge web 210, if the distance from the distance meter 10 in the outermost row to the trailing edge web 220 is less than the distance from the distance meter 10 in the outermost row to the leading edge web 210, the measuring light beams of the distance meters 10 in the rows with equal distance information are all irradiated on the trailing edge web 220, otherwise, the measuring light beams of the distance meters 10 in the rows with equal distance information are all irradiated on the leading edge web 210; if the number of the rows with equal distance information is equal to the total number of the rows, the distance information detected by each row of distance meters 10 is judged, and if the distance information detected by each row of distance meters 10 is sequentially reduced from the rear edge web 220 to the front edge web 210, the measuring light rays of the distance meters 10 with the rows with equal distance information are all irradiated on the front edge web 210; if the distance information detected by each row of distance measuring instruments 10 increases in sequence from the trailing edge web 220 to the leading edge web 210, the measuring light beams of the rows of distance measuring instruments 10 with the same distance information are all irradiated on the trailing edge web 220.
Taking the arrangement of the distance measuring devices 10 shown in fig. 3 as an example, if only the distance information detected by the distance measuring devices 10 in the L1 row is equal in size, it indicates that the measuring light of the distance measuring device 10 in the L1 row is irradiated on the trailing edge web 220, that is, the current irradiation position of the distance measuring device 10 in the L1 row is the trailing edge web 220. At this time, the range finder 10 of L2 column detects different distance information, and the range finder 10 of L3 column detects different distance information.
If the distance information detected by the rangefinder 10 in the L1 column is equal in size, and the distance information detected by the rangefinder 10 in the L2 column is equal in size, it indicates that the current irradiation positions of the rangefinders 10 in the L1 column and the L2 column are both the trailing edge web 220, that is, the current irradiation positions of the rangefinders 10 in the L1 column and the L2 column are both the trailing edge web 220. At this time, the range finder 10 of column L3 detects different distance information.
If the distance information detected by the distance meters 10 in the columns L1, L2 and L3 are equal, the distance information detected by the distance meter 10 in the column L1 is greater than the distance information detected by the distance meter 10 in the column L2, and the column L2 is greater than the column L3, the current irradiation positions of the distance meters 10 in the columns L1, L2 and L3 are all the front edge web 210; if the distance information detected by the distance meters 10 in the L1 column, the L2 column and the L3 column are equal, the distance information detected by the distance meter 10 in the L1 column is smaller than the distance information detected by the distance meter 10 in the L2 column, and the L2 column is smaller than the L3 column, the current irradiation positions of the distance meters 10 in the L1 column, the L2 column and the L3 column are all the trailing edge webs 220.
Further, if the measuring light of the range finder 10 in the same row is irradiated on the web 200, the magnitude of the distance information detected by the range finder 10 in each row in the row is compared, and if the magnitude of the distance information detected by the range finder 10 in each row in the row is sequentially decreased from the trailing edge web 220 to the leading edge web 210, the measuring light of the range finder 10 in the row is irradiated on the leading edge web 210; if the distance information detected by the range finders 10 in each row increases in size in the direction from the trailing edge web 220 to the leading edge web 210, the measuring light of the row of range finders 10 is irradiated on the trailing edge web 220.
Also taking the arrangement of the distance measuring instruments 10 shown in fig. 3 as an example, when the distance information detected by a certain row of distance measuring instruments 10 is not equal in size, it can be determined whether the corresponding measuring light is irradiated on the leading edge web 210 or the trailing edge web 220 according to the size relationship of the distance information detected by each distance measuring instrument 10 in the row, wherein if the distance information detected by the distance measuring instruments 10 in the L1 column is greater than the distance information detected by the distance measuring instruments 10 in the L2 column, and the distance information detected by the distance measuring instruments 10 in the L2 column is greater than the distance information detected by the distance measuring instruments 10 in the L3 column, the current irradiation positions of the row of distance measuring instruments 10 are all the leading edge web 210. If the distance information detected by the rangefinder 10 in column L1 is less than the distance information detected by the rangefinder 10 in column L2, and the distance information detected by the rangefinder 10 in column L2 is less than the distance information detected by the rangefinder 10 in column L3, then the current irradiation positions of the rangefinder 10 in the row are all the trailing edge webs 220.
If the measuring light of the distance measuring instruments 10 in the same row irradiates on the main beam 100, it is further determined whether the measuring light of the distance measuring instrument 10 in the row irradiates on the suction surface main beam 110 or the pressure surface main beam 120 according to the number of rows with the same distance information. Specifically, if the number of rows with equal distance information is less than the total number of rows, comparing the distance from the distance meter 10 of the outermost row to the pressure surface main beam 120 with the distance from the distance meter 10 of the outermost row to the suction surface main beam 110, if the distance from the distance meter 10 of the outermost row to the pressure surface main beam 120 is less than the distance from the distance meter 10 of the outermost row to the suction surface main beam 110, the measuring light rays of the distance meters 10 of the rows with equal distance information are all irradiated on the pressure surface main beam 120, otherwise, the measuring light rays of the distance meters 10 of the rows with equal distance information are all irradiated on the suction surface main beam 110; if the number of rows with equal distance information is equal to the total number of rows, the distance information detected by each distance meter 10 is judged to be large or small, and if the distance information detected by each distance meter 10 is sequentially reduced from the pressure surface main beam 120 to the suction surface main beam 110, the measuring light of the distance meters 10 with the rows with equal distance information is irradiated on the suction surface main beam 110; if the distance information detected by each of the distance meters 10 increases in sequence from the pressure surface main beam 120 to the suction surface main beam 110, the measuring light beams of the distance meters 10 in the rows with the same distance information are all irradiated on the pressure surface main beam 120.
Similarly, taking the arrangement of the distance measuring devices 10 shown in fig. 3 as an example, if the distance information detected by the distance measuring devices 10 in row H1 is equal, the position irradiated by the distance measuring device 10 in row H1 will be referred to as the pressure surface main beam 120. At this time, the range finder 10 in row H2 detects different amounts of range information, and the range finder 10 in row H3 detects different amounts of range information.
If the distance information detected by the distance meter 10 in row H1 is equal in size, and the distance information detected by the distance meter 10 in row H2 is equal in size, it indicates that the positions of the distance meters 10 in rows H1 and H2 are the pressure surface main beams 120. At this time, the range finder 10 of row H3 detects different amounts of range information.
If the distance information detected by the distance meters 10 in the rows H1, H2 and H3 are respectively equal in size, the distance information detected by the distance meter 10 in the row H1 is greater than the distance information detected by the distance meter 10 in the row H2, and the distance information detected by the distance meter 10 in the row H2 is greater than the distance information detected by the distance meter 10 in the row H3, the shooting positions of the distance meters 10 in the rows H1, H2 and H3 are suction surface main beams 110; if the distance information detected by the distance meters 10 in the rows H1, H2 and H3 are equal, the distance information detected by the distance meter 10 in the row H1 is smaller than the distance information detected by the distance meter 10 in the row H2, and the distance information detected by the distance meter 10 in the row H2 is smaller than the distance information detected by the distance meter 10 in the row H3, the positions where the distance meters 10 in the rows H1, H2 and H3 hit are all the pressure surface main beams 120.
Further, if the measuring light of the distance measuring instruments 10 in the same row irradiates on the main beam 100, the distance information detected by the distance measuring instruments 10 in each row in the row is compared, and if the distance information detected by the distance measuring instruments 10 in each row in the row sequentially decreases from the pressure surface main beam 120 to the suction surface main beam 110, the measuring light of the distance measuring instruments 10 in the row irradiates on the suction surface main beam 110; if the distance information detected by the range finders 10 in each row in the row increases in sequence from the pressure surface main beam 120 to the suction surface main beam 110, the measuring light of the row of range finders 10 is irradiated on the pressure surface main beam 120.
Also taking the arrangement of the distance meters 10 shown in fig. 3 as an example, when the distance information detected by the distance meters 10 in a certain row is not equal, it can be determined whether the corresponding measuring light is irradiated on the suction surface main beam 110 or the pressure surface main beam 120 according to the magnitude relationship of the distance information detected by each distance meter 10 in the row, wherein if the distance information detected by the distance meter 10 in the row H1 is greater than the distance information detected by the distance meter 10 in the row H2, the distance information detected by the distance meter 10 in the row H2 is greater than the distance information detected by the distance meter 10 in the row H3, the current irradiation position of the row of distance meters 10 is the suction surface main beam 110, if the distance information detected by the distance meter 10 in the row H1 is less than the distance information detected by the distance meter 10 in the row H2, the distance information detected by the distance meter 10 in the row H2 is less than the distance information detected by the distance meter 10 in the row H3, the current illuminated position of the column of rangefinders 10 is the pressure side main beam 120.
Step S42, determining deformation information of the blade section where the current irradiation position is located according to the current irradiation position and the vertical distance between the measurement light of the distance meter 10 and the current irradiation position when the blade is not deformed.
If the current irradiation position is the web 200, the deformation amount of the cross section of the blade at the current irradiation position in the swing matrix direction is the vertical distance between the measuring light corresponding to the distance meter 10 and the current irradiation position when the blade is not deformed.
If the current irradiation position is the main beam 100, the vertical distance between the measurement light corresponding to the distance meter 10 and the current irradiation position is the same as the vertical distance between the measurement light corresponding to the distance meter 10 and the current irradiation position when the deformation of the blade section at the current irradiation position in the flapping direction is not deformed.
For example, referring to fig. 5, when the current irradiation position of the distance meter 10 is determined, if a certain distance meter 10 irradiates on the suction surface main beam 110 after the blade is deformed, the distance information detected by the distance meter 10 when the blade is not deformed (the blade is at the position of the dotted line in fig. 5) is a1(a1 can be theoretically calculated according to the three-dimensional information of the blade and the position where the distance meter 10 is installed), and the distance information detected by the distance meter 10 when the blade is deformed (the blade is at the position of the solid line in fig. 5) is a2, the distance indicated by B1 in fig. 5 is theoretically calculated as the vertical distance from the suction surface main beam 110 to the distance meter 10 when the blade section where a2 is located is not deformed. Thus, the flap-direction deformation of the blade section at the time point a2 is B1.
If a certain distance meter 10 irradiates on the front edge web 210 after the blade deforms, because the measuring light of the distance meter 10 is parallel to the vertical surface of the web when the blade is not deformed, assuming that the vertical distance from the measuring light of the distance meter 10 to any position of the rear edge web 220 when the blade is not deformed is B2(B2 is only related to the installation position of the distance meter 10), when the distance information detected by the distance meter 10 is A3, the deformation of the y blade section where the A3 is located in the swing array direction is B2.
In the embodiment of the present invention, when the blade is not deformed, the vertical distance between the measuring light of each distance meter 10 and the position of the different blade sections on the main beam 100 and/or the vertical distance between the measuring light of each distance meter 10 and the web 200 when the blade is not deformed is pre-calibrated.
For example, the vertical distances from the suction surface main beam 110 and the pressure surface main beam 120 to each distance meter 10 can be advanced every 0.1m (the interval can be set as required) in the blade span direction, and the vertical distances can be used as reference values of the original attitude.
It will be appreciated that since the measuring light of each rangefinder 10 is parallel to the web 200 when the blade is undeformed, the perpendicular distance between the measuring light of each rangefinder 10 and different positions of the web 200 is equal when the blade is undeformed.
In addition, the control unit 20 may be a master control of the wind turbine generator system, or may be another controller.
Optionally, the distance meter 10 is connected to the control unit 20 through a signal collector, and the signal collector adopts distance information detected by the distance meter 10.
Taking deformation monitoring of a 66m blade as an example, referring to fig. 6, the specific arrangement of the distance measuring devices 10 includes a first distance measuring device 11, a second distance measuring device 12, a third distance measuring device 13 and a fourth distance measuring device 14.
Step one, according to deformation monitoring needs, four distance meters 10 are installed according to a 2-by-2 arrangement scheme, the distance between two web plates 200 is 0.35m, the distance between two distance meters 10 in the swing direction is 0.11m, the distance between each distance meter 10 and the web plate 200 adjacent to the distance meter is 0.12m, the distance between each distance meter 10 in the swing direction is 1.5m, the distance between each distance meter 10 and the main beam 100 adjacent to the distance meter is 0.5m, and the distance between the end face of a blade root and the distance between each distance meter 10 is 1.2 m.
And step two, extracting the vertical distance from the spanwise direction of the blade to the tilt array direction and the vertical distance from the pressure surface main beam 120 to the swing direction of the four laser sensors at intervals of 0.1m by using a three-dimensional model of the blade of 66m as reference values of the original posture.
And step three, connecting the distance measuring instruments 10 with the signal collector through data transmission lines, and collecting data monitored by the four distance measuring instruments 10 in real time.
And step four, processing and analyzing the acquired data, firstly judging the irradiation position of each distance meter 10, and then calculating the blade deformation. For example, at a certain time, the distance information detected by the first distance meter 11, the second distance meter 12, the third distance meter 13, and the fourth distance meter 14 is 21m, 32m, and 32m, respectively, it can be determined that the measuring light emitted by the four distance meters 10 is irradiated on the trailing edge web 220, and the deformation of the blade section at a distance of 22.2m from the blade root and 33.2m in the direction of the wobble array is 0.12m and 0.23m, respectively.
The embodiment of the invention also provides a detection method for detecting the deformation information of the blade section of the wind generating set along the span direction, the blade comprises a plurality of distance meters 10, the plurality of distance meters 10 are arranged at the positions close to the blade root of the blade, each distance meter 10 emits measuring light rays in the same specific direction, the measuring light rays are incident into a cavity formed by a web plate 200 and a main beam 100 of the blade, the measuring light rays emitted by each distance meter 10 in the specific direction are all parallel to the span direction of the blade, and the measuring light rays in each specific direction are parallel to the web plate 200 and all irradiate on the main beam 110 of the suction surface of the blade when the blade is not deformed.
Referring to fig. 7, the method includes:
step S71, obtaining distance information detected by each distance meter 10 when the blade rotates;
and step S71, determining the deformation information of the blade section where the current irradiation position of the measuring light of each distance meter 10 is located according to the distance information detected by each distance meter 10 when the blade rotates.
The detection method according to the embodiment of the present invention is specifically described with reference to the detection apparatus according to the above embodiment, and is not described again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (21)

1. A detection device for detecting deformation information of a blade section of a wind turbine along a spanwise direction, the detection device comprising:
the range finders (10) are arranged at the positions close to the blade roots of the blades, each range finder (10) emits measuring light rays in the same specific direction, and the measuring light rays are incident into a cavity formed by a web plate (200) and a main beam (100) of each blade; and
a control unit (20) electrically connected to each distance meter (10);
the measuring light rays emitted by each distance measuring instrument (10) in the specific direction are parallel to the span direction of the blade, and when the blade is not deformed, the measuring light rays in the specific direction are parallel to a web (200) and are irradiated on a main beam (110) of a suction surface of the blade;
when the blade rotates, the control unit (20) is used for determining deformation information of the blade section where the current irradiation position of the measuring light of each distance meter (10) is located according to the distance information detected by each distance meter (10).
2. The detection apparatus according to claim 1, wherein the deformation information includes at least one of a deformation amount and a deformation direction.
3. The detecting device according to claim 1, characterized in that at least two distance measuring devices (10) among the plurality of distance measuring devices (10) are arranged at intervals along a first direction of the blade, and the first direction is a swing direction of the blade.
4. A sensing device according to claim 3, wherein at least two of the plurality of distance meters (10) are spaced apart along a second direction of the blade, the second direction being a flapwise direction of the blade.
5. A testing device according to claim 4, wherein the at least two distance meters (10) spaced along the first direction of the blade and the at least two distance meters (10) spaced along the second direction form a rectangular array of rows and columns.
6. The detection device according to claim 5, wherein the distance between the distance measuring instruments (10) arranged at intervals along the first direction and the second direction of the blade is respectively equal, the distance from the distance measuring instrument (10) in the first row of the rectangular array to the web (200) adjacent to the distance measuring instrument in the last row of the rectangular array is equal to the distance from the distance measuring instrument (10) in the last row of the rectangular array to the main beam (100) adjacent to the distance measuring instrument in the last row of the rectangular array, and the distance from the distance measuring instrument (10) in the last row of the rectangular array to the main beam (100) adjacent to the distance measuring instrument in the last row of the rectangular array is equal to the distance from the distance measuring instrument in the last row of the rectangular array to the main beam (100) adjacent to the distance measuring instrument in the last row of the rectangular array.
7. The detection apparatus according to claim 6, wherein the control unit (20) is configured in particular to:
determining the current irradiation position of the measuring light of each distance meter (10) according to the distance information detected by all the distance meters (10);
and determining deformation information of the blade section where the current irradiation position is located according to the current irradiation position and the vertical distance between the measuring light of the corresponding distance meter (10) and the current irradiation position when the blade is not deformed.
8. The detection apparatus according to claim 7, wherein the control unit (20) is configured in particular to:
comparing whether the distance information detected by the distance measuring instruments (10) in the same row is equal, and if the distance information detected by the distance measuring instruments (10) in the same row is equal, judging that the measuring light of the distance measuring instruments (10) in the row irradiates on the web (200); otherwise, judging that the measuring light of the line of distance measuring instruments (10) irradiates on the main beam (100); and
comparing whether the distance information detected by the distance measuring instruments (10) in the same row is equal, and if the distance information detected by the distance measuring instruments (10) in the same row is equal, judging that the measuring light of the distance measuring instruments (10) in the row irradiates on the main beam (100); otherwise, the measuring light of the line of distance measuring instruments (10) is judged to be irradiated on the web (200).
9. The detection apparatus according to claim 8, wherein the control unit (20) is configured in particular to:
if the measuring light of the distance measuring instruments (10) in the same row irradiates on the web (200), whether the measuring light of the distance measuring instruments (10) in the row irradiates on the trailing edge web (220) or the leading edge web (210) is further judged according to the number of the rows with the same distance information.
10. The detection apparatus according to claim 9, wherein the control unit (20) is configured in particular to:
if the number of the rows with equal distance information is less than the total number of the rows, comparing the distance from the distance meter (10) of the outermost row to the rear edge web (220) with the distance from the distance meter (10) of the outermost row to the front edge web (210), if the distance from the distance meter (10) of the outermost row to the rear edge web (220) is less than the distance from the distance meter (10) of the outermost row to the front edge web (210), the measuring light rays of the distance meters (10) of the rows with equal distance information are all irradiated on the rear edge web (220), otherwise, the measuring light rays of the distance meters (10) of the rows with equal distance information are all irradiated on the front edge web (210);
if the number of the rows with equal distance information is equal to the total number of the rows, judging the distance information detected by each row of distance meters (10), and if the distance information detected by each row of distance meters (10) is sequentially reduced from the rear edge web (220) to the front edge web (210), irradiating the front edge web (210) with the measuring light rays of the distance meters (10) with the rows with equal distance information; if the distance information detected by each row of distance measuring instruments (10) increases in sequence from the trailing edge web (220) to the leading edge web (210), the measuring light rays of the rows of distance measuring instruments (10) with the same distance information size all irradiate the trailing edge web (220).
11. The detection apparatus according to claim 9, wherein the control unit (20) is configured in particular to:
if the measuring light of the distance measuring instruments (10) in the same row irradiates on the web (200), comparing the distance information detected by the distance measuring instruments (10) in each row in the row, if the distance information detected by the distance measuring instruments (10) in each row in the direction from the rear edge web (220) to the front edge web (210) is reduced in sequence, the measuring light of the distance measuring instruments (10) in the row irradiates on the front edge web (210); if the distance information detected by the distance measuring instruments (10) in each row in the direction from the rear edge web (220) to the front edge web (210) is sequentially increased, the measuring light rays of the distance measuring instruments (10) in the row are all irradiated on the rear edge web (220).
12. The detection apparatus according to claim 8, wherein the control unit (20) is configured in particular to:
if the measuring light of the distance measuring instruments (10) in the same row irradiates on the main beam (100), whether the measuring light of the distance measuring instruments (10) in the row irradiates on the suction surface main beam (110) or the pressure surface main beam (120) is further judged according to the number of the rows with the same distance information.
13. The detection apparatus according to claim 12, wherein the control unit (20) is configured in particular to:
if the number of the rows with the equal distance information is smaller than the total number of the rows, comparing the distance from the distance meter (10) of the outermost row in the rows with the equal distance information to the pressure surface main beam (120) with the distance from the distance meter (10) of the outermost row to the suction surface main beam (110), if the distance from the distance meter (10) of the outermost row to the pressure surface main beam (120) is smaller than the distance from the distance meter (10) of the outermost row to the suction surface main beam (110), the measuring light rays of the distance meters (10) of the rows with the equal distance information are all irradiated on the pressure surface main beam (120), otherwise, the measuring light rays of the distance meters (10) of the rows with the equal distance information are all irradiated on the suction surface main beam (110);
if the number of rows with equal distance information is equal to the total number of rows, judging the distance information detected by each distance meter (10), and if the distance information detected by each distance meter (10) is sequentially reduced from the pressure surface main beam (120) to the suction surface main beam (110), irradiating the measuring light rays of the distance meters (10) with the rows with equal distance information on the suction surface main beam (110); if the distance information detected by each distance meter (10) is sequentially increased in the direction from the pressure surface main beam (120) to the suction surface main beam (110), the measuring light rays of the distance meters (10) in the rows with the same distance information are all irradiated on the pressure surface main beam (120).
14. The detection apparatus according to claim 8, wherein the control unit (20) is configured in particular to:
if the measuring light of the distance measuring instruments (10) in the same row irradiates on the main beam (100), comparing the distance information detected by the distance measuring instruments (10) in each row in the row, and if the distance information detected by the distance measuring instruments (10) in each row in the row is sequentially reduced from the pressure surface main beam (120) to the suction surface main beam (110), irradiating the measuring light of the distance measuring instruments (10) in the row on the suction surface main beam (110); if the distance information detected by the range finders (10) in each row in the row is sequentially increased in the direction from the pressure surface main beam (120) to the suction surface main beam (110), the measuring light of the range finders (10) in the row is irradiated on the pressure surface main beam (120).
15. The detection apparatus according to claim 7, wherein the control unit (20) is configured in particular to:
if the current irradiation position is a web (200), the deformation amount of the cross section of the blade at the current irradiation position in the swing matrix direction is the vertical distance between the measuring light corresponding to the distance meter (10) and the current irradiation position when the blade is not deformed.
16. The detection apparatus according to claim 7, wherein the control unit (20) is configured in particular to:
if the current irradiation position is a main beam (100), when the deformation of the blade section of the current irradiation position in the waving direction is not deformed, the vertical distance between the measuring light corresponding to the distance meter (10) and the current irradiation position is larger.
17. A testing device according to claim 7, characterized in that the vertical distance between the measuring light of each distance meter (10) and the position of the different blade sections on the main beam (100) when the blade is undeformed and/or the vertical distance between the measuring light of each distance meter (10) and the web (200) when the blade is undeformed is pre-calibrated.
18. Detection device according to claim 1, characterized in that the distance meter (10) is a laser distance meter (10).
19. The device according to claim 1, characterized in that it further comprises a mounting frame (30), said mounting frame (30) being provided on the side of the barrier of the blade root facing the blade tip, said plurality of distance meters (10) being mounted on said mounting frame (30).
20. A blade for a wind power plant, comprising:
a blade main body; and
a testing device according to any one of claims 1 to 19, housed within the blade body.
21. A detection method is used for detecting deformation information of a blade of a wind generating set along a section of the blade in a spanwise direction, and is characterized in that the blade comprises a plurality of distance meters (10), the distance meters (10) are installed at the root of the blade, each distance meter (10) emits measuring light rays in the same specific direction, the measuring light rays are incident into a cavity formed by a web plate (200) and a main beam (100) of the blade, the measuring light rays emitted by each distance meter (10) in the specific direction are parallel to the spanwise direction of the blade, and the measuring light rays in each specific direction are parallel to the web plate (200) and irradiate on a main beam (110) of a suction surface of the blade when the blade is not deformed; the method comprises the following steps:
acquiring distance information detected by each distance meter (10) when the blade rotates;
and determining the deformation information of the section of the blade where the current irradiation position of the measuring light of each distance meter (10) is located according to the distance information detected by each distance meter (10) when the blade rotates.
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CN115201784B (en) * 2022-09-15 2022-12-13 南京牧镭激光科技有限公司 Blade tip clearance value inversion method and system based on three-line laser clearance radar

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007082635A1 (en) * 2006-01-19 2007-07-26 Siemens Aktiengesellschaft Rotor of a wind power plant comprising a rotor blade deformation measuring device
CN101387266A (en) * 2007-09-12 2009-03-18 西门子公司 Slender component of wind turbine and rotor vane and tower with the component
EP2239462A1 (en) * 2009-04-07 2010-10-13 Siemens Aktiengesellschaft Method and arrangement to measure the deflection of a wind-turbine blade
CN102102639A (en) * 2009-12-17 2011-06-22 西门子公司 Detection of deformation of a wind turbine blade
DE102010056033A1 (en) * 2010-12-27 2012-06-28 Baumer Innotec Ag Device for measuring deformation of rotor blade under load, particularly rotor blade of wind turbine, has receiver arranged at rotor blade and transmitter or reflector is arranged on rotor blade at distance from receiver
WO2012110188A1 (en) * 2011-02-17 2012-08-23 Ssb Wind Systems Gmbh & Co.Kg Optical measuring device for the deformation of a rotor blade of a wind turbine
CN106438218A (en) * 2016-09-28 2017-02-22 南京工程学院 Wind power blade curving measurement method for solving measurement point distance based on direction angle sensor
CN207598432U (en) * 2017-11-30 2018-07-10 远景能源（江苏）有限公司 Monitor the device of blade of wind-driven generator camber
TW201833436A (en) * 2017-03-07 2018-09-16 日商日立製作所股份有限公司 Blade for wind power generation or wind power generation device
CN108915957A (en) * 2018-06-12 2018-11-30 远景能源（江苏）有限公司 A method of for monitoring the deformation of blade
CN110260809A (en) * 2019-07-29 2019-09-20 东莞信大融合创新研究院 Inclination deformation detecting method towards wind tower demolition
JP2019183806A (en) * 2018-04-17 2019-10-24 株式会社日立製作所 Windmill blade and wind generator system
CN110469460A (en) * 2019-08-08 2019-11-19 北京汉能华科技股份有限公司 A kind of fault detection method and system of wind-driven generator
WO2021064243A1 (en) * 2019-10-03 2021-04-08 Syddansk Universitet A method and a system for tracking motion of a blade

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012104875A1 (en) * 2012-06-05 2013-12-05 Technische Universität München Method for installing sensors in rotor blades and installation device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007082635A1 (en) * 2006-01-19 2007-07-26 Siemens Aktiengesellschaft Rotor of a wind power plant comprising a rotor blade deformation measuring device
CN101387266A (en) * 2007-09-12 2009-03-18 西门子公司 Slender component of wind turbine and rotor vane and tower with the component
EP2239462A1 (en) * 2009-04-07 2010-10-13 Siemens Aktiengesellschaft Method and arrangement to measure the deflection of a wind-turbine blade
CN102102639A (en) * 2009-12-17 2011-06-22 西门子公司 Detection of deformation of a wind turbine blade
DE102010056033A1 (en) * 2010-12-27 2012-06-28 Baumer Innotec Ag Device for measuring deformation of rotor blade under load, particularly rotor blade of wind turbine, has receiver arranged at rotor blade and transmitter or reflector is arranged on rotor blade at distance from receiver
WO2012110188A1 (en) * 2011-02-17 2012-08-23 Ssb Wind Systems Gmbh & Co.Kg Optical measuring device for the deformation of a rotor blade of a wind turbine
CN106438218A (en) * 2016-09-28 2017-02-22 南京工程学院 Wind power blade curving measurement method for solving measurement point distance based on direction angle sensor
TW201833436A (en) * 2017-03-07 2018-09-16 日商日立製作所股份有限公司 Blade for wind power generation or wind power generation device
CN207598432U (en) * 2017-11-30 2018-07-10 远景能源（江苏）有限公司 Monitor the device of blade of wind-driven generator camber
JP2019183806A (en) * 2018-04-17 2019-10-24 株式会社日立製作所 Windmill blade and wind generator system
CN108915957A (en) * 2018-06-12 2018-11-30 远景能源（江苏）有限公司 A method of for monitoring the deformation of blade
CN110260809A (en) * 2019-07-29 2019-09-20 东莞信大融合创新研究院 Inclination deformation detecting method towards wind tower demolition
CN110469460A (en) * 2019-08-08 2019-11-19 北京汉能华科技股份有限公司 A kind of fault detection method and system of wind-driven generator
WO2021064243A1 (en) * 2019-10-03 2021-04-08 Syddansk Universitet A method and a system for tracking motion of a blade

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
为风电叶片保驾护航：激光超声无损检测;风电新材料;《云南电力技术》;20200615;第48卷(第3期);全文 *
风力机叶片及翼型变形分析;邓勇;《可再生能源》;20170520;第35卷(第5期);全文 *

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