CN113985762A - Wind power generation airflow monitoring system - Google Patents
Wind power generation airflow monitoring system Download PDFInfo
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- CN113985762A CN113985762A CN202111172458.1A CN202111172458A CN113985762A CN 113985762 A CN113985762 A CN 113985762A CN 202111172458 A CN202111172458 A CN 202111172458A CN 113985762 A CN113985762 A CN 113985762A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
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Abstract
The invention relates to the technical field of airflow monitoring, in particular to a wind power generation airflow monitoring system. The wind power generation system comprises a monitoring unit, an information acquisition unit and an integration unit, wherein the monitoring unit comprises a monitoring device, the monitoring device is used for detecting air flow in the environment where the wind power generation equipment is located, and the integration unit is used for integrating the air flow information acquired by the information acquisition unit and the direction acquired by the corresponding air flow. The invention carries out split monitoring on the airflows in different directions through the acquisition cavity, and once the airflows enter the acquisition cavity, the stress plate only monitors the airflows in the acquisition cavity, thereby reducing the interference caused by peripheral airflows, simultaneously realizing multi-directional monitoring, and in addition: and a check type integration algorithm is adopted for integration, so that the final calculation result is checked through the whole wind speed, the influence caused by the whole wind speed can be considered by the final calculation data after the isolation monitoring is ensured, and the monitoring of the airflow is further realized.
Description
Technical Field
The invention relates to the technical field of airflow monitoring, in particular to a wind power generation airflow monitoring system.
Background
Wind power generation means that kinetic energy of wind is converted into electric energy, wind energy is a clean and pollution-free renewable energy source and is utilized by people for a long time, water is pumped, faces are ground and the like mainly through a windmill, people are interested in how to utilize wind to generate electricity, the wind power generation is very environment-friendly, and the wind energy is huge, so that the wind power generation is increasingly paid attention to all countries in the world.
That is to say, the kinetic energy source of wind power generation is the acting force generated by the airflow flowing, so that the monitoring of the airflow is particularly important for wind power generation, people usually monitor the airflow at a place before the wind power generation equipment is installed at the place, and whether the place can have the condition of wind power generation is checked through monitoring data for a period of time.
However, the monitoring device used in the existing airflow monitoring system generally monitors the whole airflow and cannot acquire the airflow in multiple directions in real time, so that after the flow rate of the whole airflow is determined, the detection in multiple directions is still required during installation to calculate the installation position of the wind power generation equipment, and the omnibearing airflow flow rate cannot be directly calculated in the process of measuring the whole flow rate.
Disclosure of Invention
The present invention is directed to a wind turbine airflow monitoring system to solve the above problems.
In order to achieve the above object, the present invention provides a wind power generation airflow monitoring system, which includes a monitoring unit, an information collecting unit and an integrating unit, wherein the monitoring unit includes a monitoring device, the monitoring device is used for detecting airflow in an environment where wind power generation equipment is located and sending the airflow to the information collecting unit, an output end of the information collecting unit is connected with an input end of the integrating unit, the integrating unit is used for integrating airflow information collected by the information collecting unit and a direction corresponding to airflow collection, and the wind power generation airflow monitoring system includes:
the monitoring device comprises a device body, the device body comprises a detection assembly, the detection assembly comprises a sealing disc and a flow guide seat, the sealing disc is provided with two sealing discs which are respectively arranged at two ends of the flow guide seat, a plurality of side plates are annularly arranged between the sealing discs, the side plates are fixedly connected with the sealing discs, an outer opening collection cavity is formed between every two adjacent side plates after the sealing discs are sealed, a flow distribution plate is fixedly connected with the collection cavity, and a detection piece is arranged at the top of the collection cavity, which is positioned at the flow distribution plate.
As a further improvement of this technical scheme, the detection piece includes connecting plate, atress board and pressure sensor, and the connecting plate is rather than the curb plate fixed connection of both sides, set up a plurality of stand pipes on the lateral wall of connecting plate, atress board and stand pipe sliding connection, and set up the spring between atress board and the stand pipe, wherein:
the pressure sensor is arranged on one side of the stress plate close to the connecting plate.
As a further improvement of the technical scheme, the splitter plate is inclined towards the inner side and close to the lower position in the collecting cavity so as to enlarge the collecting area of the collecting cavity and the windward area of the stress plate.
As a further improvement of the technical scheme, the flow guide seat is of a cylindrical structure with a thin middle part and thick two sides so as to form an arc-shaped flow guide groove.
As a further improvement of this technical scheme, the curb plate tip extends to the sealing plate outward, forms peripheral windward portion for the atress drives a body structure that sealing plate, curb plate, flow distribution plate and detection piece formed and rotates, and is specific:
the bottom of the detection assembly is provided with a magnetic suction disc, and the magnetic suction disc is rotatably connected with a sealing disc positioned at the bottom of the side plate.
As a further improvement of the technical scheme, an electromagnetic coil and a rotating speed sensor are arranged in the magnetic suction disc, and the sealing disc at the bottom of the side plate is of a rigid-iron structure.
As a further improvement of the technical scheme, a support is arranged at the bottom of the magnetic suction disc, a mounting plate is arranged at the bottom end of the support, and mounting holes are formed in the mounting plate.
As a further improvement of the technical scheme, expanding plates are obliquely arranged in the collection cavity at two sides of the stress plate.
As a further improvement of the technical scheme, the information acquisition unit comprises an all-dimensional airflow monitoring module and a rotating speed monitoring module, the all-dimensional airflow monitoring module is used for acquiring stress data monitored by all the pressure sensors and sending the stress data to the integration unit, the integration unit forms feedback information and feeds the feedback information back to the monitoring unit, and the rotating speed monitoring module is used for acquiring rotating speed data monitored by the rotating speed sensors.
As a further improvement of the technical solution, the integration of the integration unit adopts a check-type integration algorithm, and the algorithm steps are as follows:
firstly, receiving stress data F monitored by all pressure sensors1,F2,…,FnWherein n is the number of the collection cavities, which is used as a subscript to represent the corresponding collection cavities, and the collection angle J of the collection cavities is set1,J2,…,JnWherein
Then calculating the flow velocity of the air flow collected in each collecting cavity to obtain
And k is a variation coefficient, and specifically, the variation coefficient is changed in a step mode according to rotating speed data v monitored by a rotating speed sensor, when v is more than 1.3m/s and less than 1.5m/s, k is 1, and when v is less than or equal to 1.3m/s, k is 1.2.
Compared with the prior art, the invention has the beneficial effects that:
1. in this wind power generation airflow monitoring system, carry out the split monitoring through gathering the chamber to the air current of equidirectional not to in case get into after gathering the chamber, the atress board only monitors this air current of gathering the intracavity, has reduced the interference that peripheral air current caused, has still realized diversified monitoring simultaneously, and the flow distribution plate inclines to the position that is close to the below to the inboard in gathering the intracavity in addition, with the area of facing the wind of enlarging the collection area and the atress board of gathering the chamber.
2. In the wind power generation airflow monitoring system, a check-type integration algorithm is adopted for integration, so that the final calculation result is checked through the whole wind speed, the influence caused by the whole wind speed can be considered by the final calculation data after the isolation monitoring is ensured, and the monitoring of the airflow is further realized.
Drawings
FIG. 1 is a block flow diagram of an integral unit module of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic structural diagram of the apparatus of the present invention;
FIG. 4 is a schematic structural diagram of a detecting assembly according to the present invention;
FIG. 5 is a schematic view of the structure of the detecting member of the present invention;
FIG. 6 is a schematic diagram of the side structure of the inspection assembly of the present invention;
fig. 7 is a schematic structural view of the stress plate of the invention.
The various reference numbers in the figures mean:
100. a device body;
110. a detection component; 111. sealing the disc; 112. a flow guide seat; 113. a side plate; 114. a flow distribution plate; 115. a detection member; 1151. a connecting plate; 1152. a stress plate; 1153. a pressure sensor; 1154. a protruding pipe; 1155. a spring; 1156. expanding a panel;
120. a support;
130. and (4) a magnetic suction disc.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, the present invention provides a wind power generation airflow monitoring system, which includes a monitoring unit, an information collecting unit and an integrating unit, wherein the monitoring unit includes a monitoring device, the monitoring device is used for detecting airflow in an environment where a wind power generation device is located and sending the airflow to the information collecting unit, an output end of the information collecting unit is connected with an input end of the integrating unit, the integrating unit is used for integrating airflow information collected by the information collecting unit and a direction corresponding to airflow collection, as shown in fig. 2 to 4, wherein:
monitoring devices includes device body 100, device body 100 includes detection component 110, detection component 110 includes closing disc 111 and water conservancy diversion seat 112, closing disc 111 is provided with two, set up the both ends at water conservancy diversion seat 112 respectively, it sets up a plurality of curb plates 113 to be the annular between two closing discs 111, curb plate 113 and closing disc 111 fixed connection, and form outside opening collection chamber after sealed through closing disc 111 between two adjacent curb plates 113, it has flow distribution plate 114 to gather intracavity fixedly connected with, the top that is located flow distribution plate 114 in the collection intracavity sets up detection piece 115.
Example 1
Referring to fig. 5, the detecting member 115 includes a connecting plate 1151, a force-bearing plate 1152 and a pressure sensor 1153, the connecting plate 1151 is fixedly connected to the side plates 113 at two sides thereof, a plurality of protruding tubes 1154 are disposed on the outer side wall of the connecting plate 1151, the force-bearing plate 1152 is slidably connected to the protruding tubes 1154, and a spring 1155 is disposed between the force-bearing plate 1152 and the protruding tubes 1154, wherein:
the pressure sensor 1153 is disposed on a side of the force-receiving plate 1152 adjacent to the connection plate 1151.
The working principle is as follows:
external wind enters the middle position of the two sealing discs 111 through the collection cavity, as the splitter plate 114 inclines towards the inner side and close to the lower position in the collection cavity, please refer to fig. 6, thereby enlarging the collection area of the collection cavity and the windward area of the stress plate 1152, most of the airflow enters from the bottom cavity of the splitter plate 114, after entering, the columnar guide seat 112 with thin middle and thick two sides forms an arc-shaped guide groove, the airflow is guided by the arc-shaped guide groove and enters the top cavity of the splitter plate 114, at this time, the airflow and the stress plate 1152 generate a windward force and extrude the airflow, at this time, the pressure sensor 1153 is used for pressure monitoring, so that the airflow in different directions is split and monitored through the collection cavity, and once entering the collection cavity, the stress plate 1152 only monitors the airflow in the collection cavity, and the interference caused by the peripheral airflow is reduced, meanwhile, multi-directional monitoring is realized.
In addition, the end of the side plate 113 extends outward to the sealing disc 111 to form a peripheral windward part, which is used for driving the sealing disc 111, the side plate 113, the splitter plate 114 and the detecting element 115 to rotate in an integrated structure under stress, specifically:
In addition, referring to fig. 7, the two sides of the stress plate 1152 are obliquely provided with the expanding plate 1156 towards the collecting cavity, so that the stress area between the stress plate 1152 and the airflow is increased, the amount of the airflow flowing away from the two sides is reduced, and the monitoring precision is improved.
It is worth to say that, the bottom of the magnetic chuck 130 is provided with a support 120, the bottom end of the support 120 is provided with a mounting plate, the mounting plate is provided with a mounting hole, and the whole device is mounted and fixed by passing through the mounting hole through a bolt.
Example 2
In this embodiment, the information acquisition unit includes all-round airflow monitoring module and rotational speed monitoring module, and all-round airflow monitoring module is used for gathering the atress data that all pressure sensor 1153 monitored to send to the integration unit, the integration unit forms feedback information, feeds back to the monitoring unit, and rotational speed monitoring module is used for gathering the rotational speed data of rotational speed sensor monitoring.
Referring to fig. 1, in operation:
first, the pressure sensor 1153 monitors all the collection chambers to obtain force data F1,F2,…,FnThen the integration unit receives the data and forms feedback information to be fed back to the monitoring unit, the monitoring unit generates a control instruction to control the electromagnetic coil to stop working, at the moment, the airflow acts on the peripheral windward part to drive the integrated structure to rotate, at the moment, the rotating speed of the integrated structure is monitored by using the rotating speed sensor, and rotating speed data v is obtained, and then the integration adopts a check-up integration algorithm, wherein the algorithm steps are as follows:
firstly, receiving all the stress data F monitored by the pressure sensors 11531,F2,…,FnWherein n is the number of the collection cavities, which is used as a subscript to represent the corresponding collection cavities, and the collection angle J of the collection cavities is set1,J2,…,JnWherein
Wherein n is preferably 16, i.e. 16 collection chambers are provided, i.e. 16 side plates 113;
then calculating the flow velocity of the air flow collected in each collecting cavity to obtain
And k is a variation coefficient, specifically, the variation coefficient is step variation according to the rotating speed data v monitored by the rotating speed sensor, when v is more than 1.3m/s and less than 1.5m/s, k is 1 and when v is less than or equal to 1.3m/s, k is 1.2, so that the final calculation result is verified through the whole wind speed, the influence caused by the whole wind speed can be considered by the final calculation data after the isolation monitoring is ensured, and the monitoring of the airflow is further realized.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A wind power generation airflow monitoring system is characterized in that: including monitoring unit, information acquisition unit and integration unit, monitoring unit includes monitoring devices, monitoring devices is arranged in detecting the air current of wind power generation equipment place environment to send to the information acquisition unit, the output and the integration unit input of information acquisition unit are connected, the integration unit is used for integrating the air current information of information acquisition unit collection and the direction that corresponds the air current and gather, wherein:
the monitoring device comprises a device body (100), the device body (100) comprises a detection assembly (110), the detection assembly (110) comprises a sealing disc (111) and a flow guide seat (112), the sealing disc (111) is provided with two, the two ends of the flow guide seat (112) are respectively arranged, the two ends of the flow guide seat (112) are arranged, the sealing disc (111) is provided with a plurality of annular side plates (113), the side plates (113) are fixedly connected with the sealing disc (111), an outer side opening collection cavity is formed between the two adjacent side plates (113) after the sealing disc (111) is sealed, the collection cavity is fixedly connected with a flow distribution plate (114), and a detection piece (115) is arranged at the top of the collection cavity, which is located on the flow distribution plate (114).
2. The wind power generation airflow monitoring system of claim 1, wherein: the detection piece (115) comprises a connecting plate (1151), a stress plate (1152) and a pressure sensor (1153), wherein the connecting plate (1151) is fixedly connected with side plates (113) on two sides of the connecting plate, a plurality of protruding pipes (1154) are arranged on the outer side wall of the connecting plate (1151), the stress plate (1152) is in sliding connection with the protruding pipes (1154), and springs (1155) are arranged between the stress plate (1152) and the protruding pipes (1154), wherein:
the pressure sensor (1153) is arranged on one side of the stress plate (1152) close to the connecting plate (1151).
3. The wind power generation airflow monitoring system of claim 2, wherein: the splitter plate (114) is inclined towards the inner side and the lower side in the collection cavity to enlarge the collection area of the collection cavity and the windward area of the stress plate (1152).
4. A wind power airflow monitoring system according to any of claims 1-3, characterized by: the flow guide seat (112) is of a cylindrical structure with a thin middle part and thick two sides so as to form an arc-shaped flow guide groove.
5. The wind power flow monitoring system of claim 4, wherein: the curb plate (113) tip extends outward to sealing dish (111), forms peripheral windward portion for the integrative structure that atress drove sealing dish (111), curb plate (113), flow distribution plate (114) and detection piece (115) and formed rotates, and is specific:
the bottom of the detection component (110) is provided with a magnetic chuck (130), and the magnetic chuck (130) is rotatably connected with a sealing disc (111) positioned at the bottom of the side plate (113).
6. The wind power flow monitoring system of claim 5, wherein: an electromagnetic coil and a rotating speed sensor are arranged in the magnetic suction disc (130), and the sealing disc (111) at the bottom of the side plate (113) is of a rigid-iron structure.
7. The wind power flow monitoring system of claim 5, wherein: the bottom of the magnetic suction disc (130) is provided with a support (120), the bottom end of the support (120) is provided with a mounting plate, and the mounting plate is provided with a mounting hole.
8. The wind power generation airflow monitoring system of claim 2, wherein: and two sides of the stress plate (1152) are obliquely provided with expanding plates (1156) towards the collection cavity.
9. The wind power flow monitoring system of claim 6, wherein: the information acquisition unit includes all-round airflow monitoring module and rotational speed monitoring module, all-round airflow monitoring module is used for gathering the atress data of all pressure sensor (1153) monitoring to send to the integration unit, the integration unit forms feedback information, feeds back to the monitoring unit, rotational speed monitoring module is used for gathering the rotational speed data of rotational speed sensor monitoring.
10. The wind power generation airflow monitoring system of claim 9, wherein: the integration unit adopts a check-type integration algorithm, and the algorithm steps are as follows:
firstly, receiving the stress data F monitored by all pressure sensors (1153)1,F2,…,FnWherein n is the number of the collection cavities and the collection angle J of the collection cavities is set1,J2,…,JnWherein
Then calculating the flow velocity of the air flow collected in each collecting cavity to obtain
And k is a change coefficient, and is in step change according to the rotating speed data v monitored by the rotating speed sensor.
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