CN108105039B - A kind of deformation test device and application thereof that wind-driven generator tower is connect with basis - Google Patents
A kind of deformation test device and application thereof that wind-driven generator tower is connect with basis Download PDFInfo
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- CN108105039B CN108105039B CN201711338491.0A CN201711338491A CN108105039B CN 108105039 B CN108105039 B CN 108105039B CN 201711338491 A CN201711338491 A CN 201711338491A CN 108105039 B CN108105039 B CN 108105039B
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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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/30—Commissioning, e.g. inspection, testing or final adjustment before releasing for production
-
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0034—Maintenance, repair or inspection of offshore constructions
-
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
-
- 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
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0065—Monopile structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0091—Offshore structures for wind turbines
-
- 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
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/95—Mounting on supporting structures or systems offshore
-
- 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
- F05B2260/00—Function
- F05B2260/83—Testing, e.g. methods, components or tools therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses the deformation test devices and application thereof that a kind of wind-driven generator tower is connect with basis, which includes full temperature compensation high precision dip sensor, data acquisition module；Obliquity sensor is connected with data acquisition module；When basis is land blower foundation, in the height direction, obliquity sensor is mounted on from basic top surface at h, and h is less than 2m, and the x of obliquity sensor, y-axis are radially and tangentially parallel with basic linkage section tower respectively；When basis is offshore wind turbine foundation, obliquity sensor is fixed on seawater face or more.Deformation test device measuring accuracy of the invention and reliability significantly improve；It provides blower fan tower barrel and connect deformation test device in the purposes of construction time and service phase with basis；The safety-monitoring index of a high-precision blower foundation linkage section has been determined, has provided foundation for the safety evaluation of structure；Test and analytical plan are succinct, performance is more stable, and simple installation is reduced investment outlay.
Description
Technical field
It is connect the invention belongs to wind-power electricity generation, new energy field more particularly to a kind of wind-driven generator tower with basis
Deformation test device and application thereof.
Background technique
Wind-driven generator (hereinafter referred to as blower) is mainly made of cabin, blade, tower, basis etc., wherein cabin and leaf
Piece is located at the top of tower.Foundation ring connection or anchor bolts are used for land wind-powered electricity generation, between blower fan tower barrel and basis, for
Offshore wind farm, blower fan tower barrel is connected with basis using foundation ring or flange bolt connects or grout sleeve connection, the tower and base
The section of plinth connection is referred to as basic linkage section.In blower foundation work progress, need accurately to adjust installation foundation linkage section,
Its levelness is set to meet very high requirement, it is previous that artificial levelness test, testing efficiency are mainly carried out using leveling observation instrument
It is low, levelness cannot be provided in real time as a result, and there is cross-operation, extreme influence construction speed and control with foundation construction
Precision.During the long service of blower, since the linkage section on tower and basis is by complicated Fatigue Load, basis
Ring or the concrete on anchor bolt periphery are easily broken, disengage, and are bolted fatiguability and are damaged, water penetrates into base by the crack of linkage section
In plinth, accelerate basis deterioration.After blower foundation linkage section damages, blower foundation reduces the constraint of tower, blower tower
The shaking of cylinder, which is displaced, to be increased, and when encountering biggish wind load, easily generation blower collapses, and seriously affects fan safe operation.Cause
This needs a set of deformation test device and monitoring method for blower foundation linkage section.
Inclining test method of the existing patent primarily directed to blower fan tower barrel.Patent application CN201410045389.1 and
CN201510166891.2 mainly utilizes camera to obtain tower tilt angle.CN201010245707.0 discloses a kind of benefit
The method for carrying out blower fan tower barrel inclining test with automation digital level.Patent application CN201310454617.6 and
CN201510783851.2 discloses a kind of tower state testing device and method using laser ranging technique.Patent application
CN201410437076.0 is to install four single-shaft inclination angle sensors, and straight with tower at 2~3m on tower distance from bottom basis
Diameter is that symmetry axis is symmetrical.Patent application CN201110458573.5 and CN201310166732.3 are passed using tilt acceleration
Sensor group carries out inclination measurement, and sensor is mounted on the center of tower top and tower base (i.e. basic).These patent applications
It is different from the test object of this application, test main points and technical solution.Existing literature does not provide the security monitoring of blower fan tower barrel
Index or early warning critical value.
Currently based on the fan monitor method of obliquity sensor (or inclination angle acceleration transducer group), the problem is that:
1) sensor setting by fan vibration serious interference, introduces noise, uses in spite of partial test at tower middle and upper part and top
The methods of filtering filters out high-frequency signal, but this processing significantly reduces measuring accuracy and sensitivity, to tower and basis
The identification sensitivity of defect is low.2) Choice of Sensors and technical indicator are indefinite, and the number of sensors and type of arrangement are more, scene
Test macro arrangement is complicated, cumbersome.3) connection on blower fan tower barrel and basis is most important for the bearing capacity of structural system, still
The prior art is in blank to the detection of the significant points.4) for the detection or monitoring of blower foundation linkage section, lack a set of
Test method and safety-monitoring index determine method.
In conclusion blower foundation linkage section is extremely important safely for blower fan structure, lack effective test dress at present
It sets and monitoring method.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide the changes that a kind of wind-driven generator tower is connect with basis
Shape test device and application thereof.Establish it is a set of for tower and the inclination and distortion test device that connect of basis, measuring accuracy with
Reliability significantly improves；The safety-monitoring index for establishing a high-precision blower foundation linkage section determines method, is structure
Safety evaluation provide foundation；It provides blower fan tower barrel and connect deformation test device in the use of construction time and service phase with basis
On the way；Test and analytical plan are succinct, performance is more stable, and simple installation is reduced investment outlay.
In order to achieve the above object, the technical solution adopted in the present invention is as follows: a kind of blower fan tower barrel is connect with basis
Deformation test device, including full temperature compensation high precision dip sensor, data acquisition module, power module；Obliquity sensor with
Data acquisition module is connected, and power module is that obliquity sensor and data acquisition module are powered, the resolution of obliquity sensor
Rate is not more than 0.001 degree；When basis is land blower foundation, in the height direction, obliquity sensor is mounted on from basis and pushes up
Face is risen at h, and h is less than 2m, and the x of obliquity sensor, y-axis are radially and tangentially parallel with basic linkage section tower respectively；Work as basis
When for offshore wind turbine foundation, obliquity sensor is fixed on seawater face or more, the x of obliquity sensor, y-axis respectively with basis or blower
Tower it is radially and tangentially parallel.
Further, for different basic connection types, the installation site of obliquity sensor is different, specific as follows:
For the blower foundation using foundation ring connection, obliquity sensor is fixed on basis close to concrete foundation top surface
On ring inner wall or tower inner wall or flange；
For the blower foundation using anchor bolts, obliquity sensor is fixed in tower close to concrete foundation top surface
On wall or anchor bolt flange；
For the offshore wind turbine foundation using foundation ring or anchor bolts, obliquity sensor installation site is more than seawater face
Foundation ring inner wall or tower inner wall or flange on；
For the offshore wind turbine connected using flanged joint or grout sleeve, obliquity sensor is fixed on seawater face or more
Flanged joint or grout sleeve junction.
Further, the full temperature compensation high precision dip sensor is passed using a complete high-precision double-shaft tilt angle of temperature compensation
Sensor uses two high-precision single-shaft inclination angle sensors of full temperature compensation；For double-shaft tilt angle sensor, obliquity sensor
X, y-axis is radially and tangentially parallel with basic linkage section circumference respectively；For single-shaft inclination angle sensor, two uniaxial inclination angle sensings
Device is radially and tangentially parallel with basic linkage section circumference respectively.
Further, obliquity sensor is preferably arranged in the upwind of the cardinal wind of blower.
Further, the data acquisition module is single-chip microcontroller or industrial personal computer.
Further, the data acquisition module includes:
Processor is calculated for issuing instruction and data；
Display screen is connected with processor, for realizing the display and interaction of data and figure；
Ethernet interface is connected with processor, and the data for arriving blower collection in worksite pass through cable or optical cable transmission
To wind power plant Central Control Room, cloud server；
Radio network interface is connected with processor, for accessing the local area network near blower, then passes through cable or light again
Cable is transferred to wind power plant Central Control Room, cloud server；
Blue tooth interface is connected with processor, and the external equipment for user is connect with data acquisition module；
Isolation 485,232 and USB interface, are connected, for connecting obliquity sensor and data copy with processor
And transmission；
SD card and hard-disk interface, are connected with processor, for saving the data monitored；
Video interface is connected with processor, for connecting display and image output.
Further, obliquity sensor fixed form is using welding, gluing knot or magnet absorption connection, and does anti-corrosion, prevents
Shield processing.
It is a further object of the present invention to provide a kind of purposes for the deformation test device that blower fan tower barrel is connect with basis, the use
Way is that the leveling control of construction time blower foundation linkage section and the safety profile of service phase blower foundation linkage section are evaluated,
For the leveling control of construction time blower foundation linkage section, include the following steps:
1) the blower foundation linkage section initially placed is leveled, inclination sensor acquisition and recording is radially and tangentially
Inclination value is denoted as x respectivelysAnd ys；
2) it in base concrete casting process or in pile driving process, or is influenced by extraneous load, is likely to result in
The verticality of basic linkage section changes, and can display in real time construction period on the display screen using the test macro,
The radially and tangentially inclination angle of basic linkage section, is denoted as x respectivelyiAnd yi；
3) in order to keep the levelness of basic linkage section, the angle for needing to carry out Levelling operation is xs-xiAnd ys-yi, make to adjust
Test value x after flatiAnd yiRespectively equal to xsAnd ysOr the difference of the two is less than allowable error value, to facilitate in real time
Ground guidance leveling, installation or pile sinking operation.
For the safety profile evaluation of service phase blower foundation linkage section, include the following steps:
1) initial value of acquisition and recording inclination sensor, inclination angle initial value radially and tangentially, is denoted as x respectively0And y0；
2) inclination value of fan operation in the process in real time radially and tangentially is collected and recorded, is denoted as x respectivelyjAnd yj, calculate
Change of pitch angle numerical value caused by obtaining because of load radially and tangentially is xj-x0And yj-y0, it is denoted as monitor value；
3) monitor value is compared with safety-monitoring index X and Y, when monitor value is more than safety-monitoring index, system
Alarm；Statistics calculating is carried out to the monitor value of acquisition, by its development trend of linear regression, evaluates basic linkage section operation
Normally or there are continuous worsening.
Further, the safety-monitoring index X and Y is obtained by following steps:
(1) limited element calculation model is established according to the actual size of blower foundation and tower, blower fan tower barrel is connect with basis
Section needs to refine ground and carries out element subdivision and simulation, simulates the interface interaction between steel and concrete using osculating element；
(2) material properties are assigned to the finite element model that step (1) is established, steel use ideal elastic-plastic constitutive model mould
Quasi-, input parameter mainly includes the elasticity modulus of steel, Poisson's ratio, yield strength, and concrete uses non linear elastic constitutive relation mould
Pattern is quasi-, inputs the nonlinear stress strain relation curve of concrete；
(3) design load for applying blower to finite element model is solved to calculate to obtain using Finite Element and designed
The response of blower entirety under load；
(4) according to the installation site of obliquity sensor, in finite element model calculated result, obliquity sensor position is extracted
Radially and tangentially Dip countion value X, Y at place, as the safety-monitoring index in fan operation monitoring.
The prior art that content not specifically described above is known to the skilled person.
Advantage of the invention with have the beneficial effect that:
(1) it is often to be easiest to the position destroyed that blower fan tower barrel connect with basis, the present invention establish it is a set of very
With targetedly inclination and displacement deformation test device, sensor mounting location and Technology Selection are more excellent, realize to the pass
The detection and monitoring at bond structure position, measuring accuracy and reliability significantly improve.
(2) a high-precision blower foundation linkage section method for numerical simulation is established, can accurately determine blower foundation
The safety-monitoring index of linkage section, while the safety-monitoring index of other positions can also be held in the method on blower fan structure
Row, so that the safety evaluation for structure provides foundation.
(3) the present invention provides blower fan tower barrels and the basic purposes for connecting deformation test device, in the blower foundation construction time
It can be controlled for the leveling of linkage section and real-time, accurate information is provided, can be used in wind power plant basis in blower service phase and connect
With the Long Period Health Monitoring of foundation uneven settlement, effective early warning and prevent due to basis and linkage section deformation caused by blower fall
It collapses accident.
(4) test of the invention and analytical plan is succinct, performance is more stable, simple installation is reduced investment outlay.
Detailed description of the invention
Fig. 1 is the sectional view of blower foundation ring connection；
Fig. 2 is the top view of blower foundation ring connection；
Fig. 3 is the sectional view of blower anchor bolts；
Fig. 4 is the top view of blower anchor bolts；
Fig. 5 is the obliquity sensor installation site sectional view of blower flanged joint；
Fig. 6 is the top view of blower flanged joint；
Fig. 7 is another installation site sectional view of obliquity sensor of blower flange bolt connection；
Fig. 8 is the sectional view of blower grout sleeve connection；
Fig. 9 is the top view of blower grout sleeve connection；
Figure 10 is another installation site sectional view of obliquity sensor of blower grout sleeve connection；
Figure 11 is test system hardware composition figure；
Figure 12 is the actual measurement inclination angle figure in the basis direction ring x；
Figure 13 is the actual measurement inclination angle figure in the basis direction ring y；
In figure: 1- flange, 2- foundation ring, 3- concrete foundation, 4- blower fan tower barrel, 5- obliquity sensor, 6- anchor bolt flange,
7- anchor bolt, 8- pile foundation, 9- sea bed, 10- flange and workbench, 11- seawater, 12- grout sleeve changeover portion, α indicate inclination angle
Azimuth of the sensor mounting location relative to due north, h indicate the height of the basic top surface of obliquity sensor distance.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
The high-precision double-shaft tilt angle sensor of full temperature compensation 1 is selected, it can also be using the high-precision uniaxial inclination angle of full temperature compensation
Sensor 2, sensor resolution is not more than 0.001 degree, corrects sensor temperature drift, tested test ring using full temperature compensation technology
Border variation influences small.
As depicted in figs. 1 and 2, method is passed through for the blower foundation using foundation ring connection, blower fan tower barrel 4 and foundation ring 2
Orchid 1 connects, and obliquity sensor 5 is fixed on 2 inner wall of foundation ring, close to concrete foundation top surface apart from concrete in this example
Basic 3 apical side heights are h=10cm, can also be fixed on 4 inner wall of flange 1 or blower fan tower barrel.Offshore wind turbine can also be adopted
Concrete bearing platform and blower fan tower barrel are connected with foundation ring, can refer to Fig. 1 and Fig. 2 placement sensor.
As shown in Figure 3 and Figure 4, for the blower foundation using anchor bolts, blower fan tower barrel 4 passes through anchor bolt flange 6 and anchor
Bolt 7 is fixed in concrete foundation 3, and obliquity sensor 5 is fixed on blower fan tower barrel 4 close to 3 top surface of concrete foundation in this example
Inner wall on, can also be fixed on anchor bolt flange 6, be less than 2m apart from concrete foundation top surface, take h=in the present embodiment
10cm.Anchor bolts concrete bearing platform and blower fan tower barrel can also be used for offshore wind turbine, can refer to Fig. 3 and Fig. 4 arrangement sensing
Device.
As illustrated in figs. 5-7, for no changeover portion, using the offshore wind turbine foundation of flanged joint, pile foundation 8 is inserted into sea bed 9
In, it is connected between blower fan tower barrel 4 and pile foundation 8 by flange and workbench 10, obliquity sensor 5 is fixed on 11 or more seawater
Flange and workbench at.As seen in figs. 8-10, for using grout sleeve changeover portion offshore wind turbine, blower fan tower barrel 4 with
It is connected between pile foundation 8 by grout sleeve changeover portion 12, obliquity sensor 5 is fixed on the grout sleeve connection of the water surface or more
Place.The h value that sensor shown in Fig. 5 and Fig. 8 is located at flange and grout sleeve or more is less than 2m；Sensor can also be mounted on
Flange and grout sleeve inside below, sensor position is higher by sea level at this time, such as Fig. 7 and Figure 10.
In the horizontal plane of above-mentioned each top view, obliquity sensor 5 can be arranged in any position on linkage section circumference,
Note obliquity sensor installation site is a relative to the azimuth in compass direction.In embodiment, it is preferably arranged in blower
In the upwind of cardinal wind.The x of double-shaft tilt angle sensor, y-axis are radially and tangentially parallel with linkage section circumference respectively, if adopting
It is with 2 single-shaft inclination angle sensors, then radially and tangentially parallel with linkage section circumference respectively.Obliquity sensor fixed form uses
Welding or high-performance gluing knot, and do anti-corrosion, protective treatment.
As shown in figure 11, the deformation test device that a kind of blower fan tower barrel provided by the invention is connect with basis, including full temperature
Mend high precision dip sensor, data acquisition module, power module；Obliquity sensor is connected with data acquisition module, power supply
Module is that obliquity sensor and data acquisition module are powered, and after mounted angle sensor, is linked into data acquisition module
In；The data acquisition module includes:
Processor is calculated for issuing instruction and data；
Ethernet interface is connected with processor, and the data for arriving blower collection in worksite pass through cable or optical cable transmission
To wind power plant Central Control Room, cloud server；
Radio network interface (configurable 4G network interface card), is connected, for accessing the local area network near blower, then with processor
Pass through cable or optical cable transmission again to wind power plant Central Control Room, cloud server；
Blue tooth interface is connected with processor, and the external equipment for user is connect with data acquisition module；
Isolation 485,232 and USB interface, are connected, for connecting obliquity sensor and data copy with processor
And transmission；
SD card and hard-disk interface, are connected with processor, for saving the data monitored；
Video interface is connected with processor, for connecting display and image output.
Display screen is connected with processor, for realizing the display and interaction of data and figure；The data monitored are real-time
Ground shows over the display, by the comparison with monitor control index, the case where for being more than monitor control index, is reported over the display
Alert prompt, and alert notice is sent to user；It is calculated, can also be shown over the display, base by the statistics to monitoring data
The long-run development process data of plinth linkage section deformation, in order to which user grasps the development trend of basic linkage section deformation.The number
It is single-chip microcontroller or industrial personal computer according to acquisition module.
By taking foundation ring connects as an example, the safety-monitoring index that blower fan tower barrel is connect with foundation ring is calculated, the specific steps are as follows:
(1) limited element calculation model is established according to the actual size of blower foundation and tower, blower foundation ring is straight in this example
Diameter is 4.2m, the depth being embedded in concrete foundation are as follows: 1.3m.Blower fan tower barrel and basic linkage section carry out single with needing to refine
First subdivision and simulation, using the interface interaction of (such as: between steel and concrete) between osculating element simulation different materials.
(2) material properties are assigned to the finite element model that step (1) is established, steel use ideal elastic-plastic constitutive model mould
Quasi-, input parameter mainly includes that the springform of steel measures 200GPa, Poisson's ratio takes 0.167, yield strength to take 380MPa, coagulation
Soil is simulated using nonlinear elastic moduleAPPLICATION OF PRODUCTS, and input modulus of elasticity of concrete 25GPa, Poisson's ratio 0.25, non-linear stress are answered
Become relation curve.In the case where meeting computational accuracy and computational efficiency, steel and concrete can also be using this other structures
Model is simulated.
(3) the design load 41100kNm for applying blower to finite element model is solved to calculate using Finite Element and be obtained
Obtain the response of the blower entirety under design load.
(4) it according to the position of obliquity sensor in test macro noted earlier, in finite element model calculated result, extracts
X=0.1 °, Y=0.05 ° of radially and tangentially Dip countion value at obliquity sensor position, as the peace in fan operation monitoring
Full monitor control index (or being early warning critical value), when monitor value is more than the calculated value, system alarm.
(5) due to this method can calculate obtain blower fan tower barrel, basis, the stress of any positions such as linkage section, displacement,
Inclination angle etc. as a result, therefore this method be not limited only to determine blower foundation linkage section safety-monitoring index, determining blower fan structure
When the safety-monitoring index of upper any position, it can execute according to the method described above.
During one's term of military service with blower, for the safety profile evaluation of blower foundation linkage section, implementation steps are as follows:
1) after installing inclination and distortion test macro according to preceding method, the initial value of acquisition and recording sensor radially and is cut
To inclination angle initial value be denoted as x respectively0=1 ° and y0=1.5 °.
2) inclination value of fan operation in the process in real time radially and tangentially is collected and recorded, is denoted as x respectivelyjAnd yj, calculate
Obtaining the tilt values caused by load radially and tangentially is xj-x0And yj-y0, see Figure 12 and Figure 13.Inclination value will be monitored with before
X=0.1 ° of safety-monitoring index that literary method determines, Y=0.05 ° be compared.
3) to monitoring inclination value xj-x0And yj-y0Further statistics calculates, and passes through its development trend of linear regression.This
Monitor value is less than safety-monitoring index in embodiment, and monitoring inclination value fluctuating range is in normal range (NR), blower foundation ring
Connection is in normal condition.
It is monitored by practice processes linkage section, acquired significant benefit is:
(1) it is often to be easiest to the position destroyed that blower fan tower barrel connect with basis, the present invention establish it is a set of very
With targetedly inclination and displacement deformation test device, sensor mounting location and Technology Selection are more excellent, realize to the pass
The detection and monitoring at bond structure position, measuring accuracy and reliability significantly improve.
(2) a high-precision blower foundation linkage section method for numerical simulation is established, can accurately determine blower foundation
The safety-monitoring index of linkage section, while the safety-monitoring index of other positions can also be held in the method on blower fan structure
Row, so that the safety evaluation for structure provides foundation.
(3) the present invention provides blower fan tower barrels and the basic purposes for connecting deformation test device, in the blower foundation construction time
It can be controlled for the leveling of linkage section and real-time, accurate information is provided, can be used in wind power plant basis in blower service phase and connect
With the Long Period Health Monitoring of foundation uneven settlement, effective early warning and prevent due to basis and linkage section deformation caused by blower fall
It collapses accident.
(4) test of the invention and analytical plan is succinct, performance is more stable, simple installation is reduced investment outlay.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of purposes for the deformation test device that blower fan tower barrel is connect with basis, the deformation that the blower fan tower barrel is connect with basis
Test device includes full temperature compensation high precision dip sensor, data acquisition module, power module；Obliquity sensor is adopted with data
Collect module to be connected, power module is that obliquity sensor and data acquisition module are powered, and the resolution ratio of obliquity sensor is little
In 0.001 degree；When basis is land blower foundation, in the height direction, obliquity sensor is mounted on the h from basic top surface
Place, h are less than 2m, and the x of obliquity sensor, y-axis are radially and tangentially parallel with basic linkage section tower respectively；When basis is sea
When blower foundation, obliquity sensor is fixed on seawater face or more, the x of obliquity sensor, y-axis respectively with basis or blower fan tower barrel
It is radially and tangentially parallel, which is characterized in that the purposes is leveling control and the service phase blower of construction time blower foundation linkage section
The safety profile of basic linkage section is evaluated,
For the leveling control of construction time blower foundation linkage section, include the following steps:
1) the blower foundation linkage section initially placed is leveled, the inclination angle of inclination sensor acquisition and recording radially and tangentially
Value, is denoted as respectivelyx sWithy s；
2) it in base concrete casting process or in pile driving process, or is influenced by extraneous load, is likely to result in basis
The verticality of linkage section changes, and can display in real time construction period on the display screen using the test macro, basis
The radially and tangentially inclination angle of linkage section, is denoted as respectivelyx i Withy i ；
3) in order to keep the levelness of basic linkage section, the angle for carrying out Levelling operation is needed to bex s-x i Withy s-y i , after making leveling
Test valuex i Withy i Respectively equal tox sWithy sOr the difference of the two is less than allowable error value, to easily instruct in real time
Leveling, installation or pile sinking operation；
For the safety profile evaluation of service phase blower foundation linkage section, include the following steps:
1) initial value of acquisition and recording inclination sensor, inclination angle initial value radially and tangentially, is denoted as respectivelyx 0Withy 0；
2) inclination value of fan operation in the process in real time radially and tangentially is collected and recorded, is denoted as respectivelyx j Withy j , it is calculated
Because the change of pitch angle numerical value caused by load radially and tangentially isx j - x 0Withy j - y 0, it is denoted as monitor value；
3) by monitor value and safety-monitoring indexXWithYIt is compared, when monitor value is more than safety-monitoring index, system alarm；
Statistics calculating is carried out to the monitor value of acquisition, by its development trend of linear regression, evaluates basic linkage section normal operation
Or there are continuous worsening.
2. purposes according to claim 1, which is characterized in that the safety-monitoring indexXWithYIt is obtained by following steps
:
(1) limited element calculation model is established according to the actual size of blower foundation and tower, blower fan tower barrel and basic linkage section need
It carries out element subdivision and simulation with refining, the interface interaction between steel and concrete is simulated using osculating element；
(2) material properties being assigned to the finite element model that step (1) is established, steel are simulated using ideal elastic-plastic constitutive model,
Input parameter mainly includes the elasticity modulus of steel, Poisson's ratio, yield strength, and concrete uses nonlinear elastic moduleAPPLICATION OF PRODUCTS mould
It is quasi-, input the nonlinear stress strain relation curve of concrete；
(3) design load for applying blower to finite element model is solved using Finite Element and calculates acquisition in design load
The response of lower blower entirety；
(4) it according to the installation site of obliquity sensor, in finite element model calculated result, extracts at obliquity sensor position
Radially and tangentially Dip countion valueX、Y, as the safety-monitoring index in fan operation monitoring.
3. purposes according to claim 1, which is characterized in that for different basic connection types, obliquity sensor
Installation site is different, specific as follows:
For the blower foundation using foundation ring connection, obliquity sensor is fixed in foundation ring close to concrete foundation top surface
On wall or tower inner wall or flange；
For the blower foundation using anchor bolts, obliquity sensor close to concrete foundation top surface, be fixed on tower inner wall or
On anchor bolt flange；
For the offshore wind turbine foundation using foundation ring or anchor bolts, base of the obliquity sensor installation site more than seawater face
On plinth ring inner wall or tower inner wall or flange；
For the offshore wind turbine connected using flanged joint or grout sleeve, obliquity sensor is fixed on the method in seawater face or more
Orchid connection or grout sleeve junction.
4. purposes according to claim 1, which is characterized in that the full temperature compensation high precision dip sensor uses one
The complete high-precision double-shaft tilt angle sensor of temperature compensation uses two high-precision single-shaft inclination angle sensors of full temperature compensation；For twin shaft
Obliquity sensor, the x of obliquity sensor, y-axis are radially and tangentially parallel with basic linkage section circumference respectively；For uniaxial inclination angle
Sensor, two single-shaft inclination angle sensors are radially and tangentially parallel with basic linkage section circumference respectively.
5. purposes according to claim 1, which is characterized in that obliquity sensor is preferably arranged in the cardinal wind of blower
Upwind on.
6. purposes according to claim 1, which is characterized in that the data acquisition module is single-chip microcontroller or industrial personal computer.
7. purposes according to claim 1 or 6, which is characterized in that the data acquisition module includes:
Processor is calculated for issuing instruction and data；
Display screen is connected with processor, for realizing the display and interaction of data and figure；
Ethernet interface is connected with processor, the data for arriving blower collection in worksite, passes through cable or optical cable transmission to wind
Electric field Central Control Room, cloud server；
Radio network interface is connected with processor, for accessing the local area network near blower, is then passed again by cable or optical cable
It is defeated to arrive wind power plant Central Control Room, cloud server；
Blue tooth interface is connected with processor, and the external equipment for user is connect with data acquisition module；
Isolation 485,232 and USB interface, are connected, for connecting obliquity sensor and data copy and biography with processor
It is defeated；
SD card and hard-disk interface, are connected with processor, for saving the data monitored；
Video interface is connected with processor, for connecting display and image output.
8. purposes according to claim 1, which is characterized in that obliquity sensor fixed form using welding, gluing knot or
Magnet absorption connection, and do anti-corrosion, protective treatment.
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| CN109185073A (en) * | 2018-07-27 | 2019-01-11 | 江苏科技大学 | A kind of the wind load loading experimental apparatus and application method of marine floating type blower |
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| CN111220123B (en) * | 2020-03-06 | 2021-09-14 | 湖南砼联科技有限责任公司 | Foundation ring inclination angle monitoring system and method |
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| CN114017266B (en) * | 2021-10-04 | 2023-12-15 | 北京化工大学 | Low-frequency swing and settlement inclination early warning method for large wind power tower |
| US11608158B1 (en) | 2022-07-25 | 2023-03-21 | Joon Bu Park | Negative Poisson's ratio materials for propellers and turbines |
| CN116145670B (en) * | 2022-12-16 | 2024-10-15 | 中国建筑第四工程局有限公司 | Method, system and device for lowering verticality of back-pressure soil steel pile casing based on deep foundation pit |
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