CN216617757U - Blade integrity monitoring system - Google Patents
Blade integrity monitoring system Download PDFInfo
- Publication number
- CN216617757U CN216617757U CN202122606185.9U CN202122606185U CN216617757U CN 216617757 U CN216617757 U CN 216617757U CN 202122606185 U CN202122606185 U CN 202122606185U CN 216617757 U CN216617757 U CN 216617757U
- Authority
- CN
- China
- Prior art keywords
- blade
- pressure
- module
- pressure sensor
- monitoring system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Wind Motors (AREA)
Abstract
The utility model provides a blade integrity monitoring system, which comprises: the wind power station centralized control system comprises a blade in a positive pressure state, a pressure sensor arranged on the inner side wall of the blade, a wind power station centralized control center in wireless connection with the pressure sensor, and an alarm connected with a data output end of the wind power station centralized control center. The blade damage detection device is simple in design, reasonable in structure, high in blade detection accuracy and precision and capable of finding blade damage in time.
Description
Technical Field
The utility model relates to the field of blade state monitoring, in particular to a blade integrity monitoring system.
Background
When blades of an existing wind turbine generator set operate, large centrifugal force can be generated due to the fact that the length of the blades is long. If the blade is not processed in time due to microcrack, the blade gradually forms a penetrating crack until the blade is broken.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, to some extent, one of the technical problems in the related art.
Therefore, the utility model provides a blade integrity monitoring system, and by applying the blade integrity monitoring system, early microcracks of the blade can be found in time so as to be convenient to process, thereby reducing the loss of the blade.
The utility model provides a blade integrity monitoring system, which comprises:
a blade, wherein the blade is in a positive pressure state;
a pressure sensor mounted on an interior sidewall of the blade;
the wind power plant centralized control center is wirelessly connected with the pressure sensor, and a data output end of the wind power plant centralized control center is connected with the alarm.
In some embodiments, the pressure sensor is mounted at a pre-set mounting point on the blade inner sidewall, wherein the pre-set mounting point is determined based on a location in the blade at which micro-cracks are likely to occur; the range of the pressure sensor comprises a preset pressure range.
In some embodiments, the system further comprises a blade root flange and a hollow structure, wherein the blade root flange is connected with the hollow structure in a sealing mode and is used for forming a closed space in the blade.
In some embodiments, the system further comprises a temperature compensation module, a pressure adjustment module, a blade condition determination module, and a pressure data transmission module, wherein,
the temperature compensation module is connected with the pressure sensor;
one end of the pressure adjusting module is connected with the blade root flange, and the other end of the pressure adjusting module is connected with the pressure sensor;
the pressure data transmission module is respectively connected with the pressure sensor, the temperature compensation module and the pressure regulation module;
the blade state determining module is installed in the wind power plant centralized control center and is in wireless connection with the temperature compensation module, the pressure adjusting module and the pressure sensor through the pressure data transmission module.
In some embodiments, the system further comprises an exhaust valve and an inflation valve, the exhaust valve and the pressure regulation module being connected by a root flange; the inflation valve is installed on the blade root flange and communicated with the closed space.
In some embodiments, the hollow structure has a reticulated volume capable of withstanding a maximum pressure within the predetermined pressure range.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the utility model. Other features of the present invention will become apparent from the following description.
Drawings
FIG. 1 is a block diagram of a blade integrity monitoring system according to an embodiment of the present invention.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
A blade integrity monitoring system and method of embodiments of the present invention is described below with reference to the accompanying drawings.
In the related technology, the blades of the wind turbine generator are basically made of glass fiber and epoxy resin and are produced in a micro-vacuum infusion mode. The interior of the blade is of a hollow structure, and if the blade is not treated in time due to microcracks in operation, the blade gradually develops small cracks and even large cracks until the blade is broken. When the blade has microcracks, if the blade can be found and stopped for processing in time, the probability of blade damage can be reduced.
Based on the above, the embodiment of the utility model provides a blade integrity monitoring system, which is applied to a wind driven generator blade, can improve the accuracy and precision of blade state detection, helps a user to find early microcracks in time, and reduces equipment fault loss.
FIG. 1 is a block diagram of a blade integrity monitoring system according to an embodiment of the present invention.
As shown in FIG. 1, the blade integrity monitoring system includes: a blade 1, wherein the inside of the blade 1 is in a positive pressure state; the pressure sensor 2 is mounted on the inner side wall of the blade 1; the wind power plant centralized control center 3 is in wireless connection with the pressure sensor 2, and the data output end of the wind power plant centralized control center 3 is connected with the alarm 4.
In this embodiment, before the blade 1 is operated, the chamber of the blade is filled with air with a slight positive pressure, so that the chamber of the blade is in a slight positive pressure state. The micro-positive pressure means a pressure of 1kg/cm or less2. When the blade 1 has cracks, the integrity of the blade can be known by monitoring the pressure state in the blade cavity. Here, the pressure fluctuation of the inner chamber of the blade may also be caused by insufficient airtightness of the inner chamber of the blade, such as leakage of the sealing structure of the blade. The pressure state in the blade monitored by the blade integrity monitoring system is mainly used as reference data for operation and maintenance personnel to overhaul equipment, and when the pressure state fluctuation caused by insufficient air tightness of the blade is detected, the operation and maintenance personnel can stop the blade and process faults. The blade integrity monitoring system provided by the embodiment of the utility model has higher sensitivity to pressure fluctuation in the blade cavity, so that the pressure fluctuation in the blade caused by any reason can be displayed on the display equipment of the wind power plant centralized control center in time.
In this embodiment, the wind farm centralized control center 3 may be installed on the ground and used for collecting the operation parameters and the fault information of the blades 1. A wind power plant centralized control center can simultaneously manage a plurality of wind driven generators, and operation and maintenance personnel can timely maintain the blades according to blade operation information acquired by the wind power plant centralized control center.
In this embodiment, in order to remind the operation and maintenance personnel to maintain the blade in time, when the pressure in the blade reaches a certain level, early warning information can be sent out through the alarm 4. The early warning information can be stored in the data of the wind power plant centralized control center, so that operation and maintenance personnel can look up the early warning information according to actual requirements.
As a possible implementation manner, the pressure sensor 2 is installed at a preset installation point on the inner side wall of the blade 1, wherein the preset installation point is determined according to the position where the micro-crack is easy to appear in the blade; the range of the pressure sensor comprises a preset pressure range.
In this embodiment, the preset mounting points of the pressure sensors 2 are determined by theoretical derivation and load simulation calculation software according to the blade load calculation results during the manufacturing process of the blade. The preset mounting point is generally located near a position where microcracks easily appear on the blade, so that the position where the microcracks appear can be accurately and effectively found according to feedback data of the pressure sensor 2. Here, the maximum range of the pressure sensor should be 1kg/cm or more, which is a critical value of the micro-positive pressure set to be larger than or equal to2So that the pressure sensor 2 can continuously output a pressure trend curve.
As a possible implementation manner, the system further includes a blade root flange 8 and a hollow structure, and the blade root flange 8 is hermetically connected with the hollow structure to form a closed space in the blade 1.
In the embodiment, when the blade is manufactured, after the connection between the blade root flange 8 and the hollow structure of the blade is sealed, the micro-positive pressure air is added into the cavity of the blade to perform the air tightness test, so that the hollow structure of the blade is ensured to be in a sealing effect, and the pressure sensor 2 is convenient to monitor the pressure change in the cavity of the blade. During transportation of the blade, micro-positive pressure air in the blade cavity needs to be discharged, so that the internal pressure and the external pressure of the blade are kept consistent, and the possibility of crack formation of the blade during transportation is reduced. In the embodiments of the present invention, the blade chamber mainly refers to a hollow structure of the blade.
As a possible implementation, the system further comprises a temperature compensation module 5, a pressure adjustment module 5, a blade condition determination module 11, and a pressure data transmission module 7, wherein,
the temperature compensation module 5 is connected with the pressure sensor 2; one end of the pressure adjusting module 6 is connected with the blade root flange 8, and the other end of the pressure adjusting module is connected with the pressure sensor 2; the pressure data transmission module 7 is respectively connected with the pressure sensor 2, the temperature compensation module 5 and the pressure regulation module 6; the blade state determination module 11 is installed in the wind farm centralized control center 3 and is wirelessly connected with the temperature compensation module 5, the pressure regulation module 6 and the pressure sensor 2 through the pressure data transmission module 7.
In this embodiment, the pressure adjusting module 6 is provided to keep the micro-positive pressure state in the blade stable if the temperature difference is large all year around the area where the blade is used, in consideration of the influence of the summer and winter temperatures. When the temperature difference is large all the year round, in the season with high temperature, if the system monitors that the pressure of three blades of the wind driven generator is synchronously increased to exceed the pressure limit, a part of gas is automatically discharged to enable the pressure of the blades to be maintained in a normal range under the intact condition; if the system monitors that the pressure of the three blades is synchronously reduced to the pressure exceeding the limit, the system prompts an operation and maintenance person that the gas should be injected to ensure that the pressure of the blades is maintained in a normal range under the intact condition. Here, the normal range of the pressure in the blade is (0, 1 kg/cm)2]。
In this embodiment, the temperature compensation module 5 is generally made of a non-linear element, and is used for compensating the zero drift and the sensitivity drift in the circuit of the pressure sensor 2.
In this embodiment, the pressure data transmission module 7 has a function of data infinite transmission, and similar to bluetooth, the data in the pressure sensor 2, the temperature compensation module 5 and the pressure adjustment module 6 can be automatically reported to the wind farm centralized control center 3. Correspondingly, in the wind farm centralized control center 3, the data reported by the pressure data transmission module 7 is received through the blade state determination module 11. The blade state determination module 11 also has a function of data unlimited transmission.
It should be noted that, in the above embodiments, the pressure sensor 2, the temperature compensation module 5, the pressure adjustment module 6, the pressure data transmission module 7, the exhaust valve 9, the blade state determination module 11, the wind farm centralized control center 3, and the alarm 4 are in actual use, and if the need for electric power is supported, the blade integrity monitoring system according to the embodiments of the present invention should further have a power supply.
As a possible implementation manner, the system further comprises an exhaust valve 9 and an inflation valve 10, wherein the exhaust valve 9 is connected with the pressure regulation module 6 through a blade root flange 8; the charging valve 10 is mounted on the blade root flange 8 and is in communication with the enclosed space.
In this embodiment, the exhaust valve 9 is an automated device that can automatically vent excess gas from the vane chamber in response to an indication from the pressure regulation module 6. The inflation valve 10 is a pure mechanical device, and when operation and maintenance personnel learn that the pressure in the blade cavity is insufficient according to the information of the wind farm centralized control center 3, the inflation valve 10 can be used for supplementing gas to the blade cavity.
As a possible realization, the hollow structure has a reticulated space that can withstand the maximum pressure within the preset pressure range.
In this embodiment, the reticular space in the hollow structure of the blade 1 has a supporting structure design, which can support the blade to bear the maximum pressure of the micro-positive pressure in the blade, i.e. 1kg/cm2。
It should be noted that, the wind farm centralized control center 3 according to the embodiment of the present invention may perform authority setting. Specifically, the personalized setting can be performed according to the actual requirements of operation and maintenance personnel and manufacturers.
The above-described embodiments should not be construed as limiting the scope of the utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A blade integrity monitoring system, the system comprising:
a blade, wherein the blade is in a positive pressure state;
a pressure sensor mounted on an interior sidewall of the blade;
the wind power plant centralized control center is wirelessly connected with the pressure sensor, and a data output end of the wind power plant centralized control center is connected with the alarm.
2. The blade integrity monitoring system of claim 1 wherein the pressure sensor is mounted at a pre-set mounting point on the blade inner sidewall, wherein the pre-set mounting point is determined based on a location in the blade at which micro-cracks are likely to occur;
the range of the pressure sensor comprises a preset pressure range.
3. The blade integrity monitoring system of claim 1 further comprising a blade root flange and a hollow structure, the blade root flange being sealingly connected to the hollow structure for forming an enclosed space within the blade.
4. The blade integrity monitoring system of claim 3, further comprising a temperature compensation module, a pressure adjustment module, a blade condition determination module, and a pressure data transmission module, wherein,
the temperature compensation module is connected with the pressure sensor;
one end of the pressure adjusting module is connected with the blade root flange, and the other end of the pressure adjusting module is connected with the pressure sensor;
the pressure data transmission module is respectively connected with the pressure sensor, the temperature compensation module and the pressure regulation module;
the blade state determining module is installed in the wind power plant centralized control center and is in wireless connection with the temperature compensation module, the pressure adjusting module and the pressure sensor through the pressure data transmission module.
5. The blade integrity monitoring system of claim 4 further comprising an exhaust valve and an inflation valve, said exhaust valve being flanged to said pressure regulation module by a blade root; the inflation valve is installed on the blade root flange and communicated with the closed space.
6. The blade integrity monitoring system of claim 3 wherein the hollow structure has a reticulated volume for withstanding a maximum pressure within the preset pressure range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122606185.9U CN216617757U (en) | 2021-10-27 | 2021-10-27 | Blade integrity monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122606185.9U CN216617757U (en) | 2021-10-27 | 2021-10-27 | Blade integrity monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216617757U true CN216617757U (en) | 2022-05-27 |
Family
ID=81693065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122606185.9U Active CN216617757U (en) | 2021-10-27 | 2021-10-27 | Blade integrity monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216617757U (en) |
-
2021
- 2021-10-27 CN CN202122606185.9U patent/CN216617757U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021043036A1 (en) | Field detection device, system and method for achieving no maintenance of gas density relay | |
| EP3783329B1 (en) | Monitoring method and monitoring system for cracking state of blade, and blade | |
| EP4027155A1 (en) | Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof | |
| CN107829889B (en) | Deicing control method and system for wind generating set | |
| CN110444442B (en) | Remote gas density relay system and verification method thereof | |
| WO2021218285A1 (en) | Gas density relay capable of intelligently monitoring whole life cycle and implementation method therefor | |
| CN108519205A (en) | Battery core thermal runaway detecting system and method | |
| KR101764535B1 (en) | Method for controlling wind turbine and Recognition device noise of a wind turbine | |
| CN103940257B (en) | Air-cooling island temperature control system | |
| JP2022548539A (en) | Maintenance-free gas density relay and its cross-inspection method | |
| CN216617757U (en) | Blade integrity monitoring system | |
| CN211318085U (en) | On-site detection device and system for realizing maintenance-free gas density relay | |
| CN211426159U (en) | Gas density monitoring device and monitoring system for realizing maintenance-free density relay | |
| CN107192493A (en) | Electric power pylon fastener axle power real-time detection method under the big temperature difference environment of strong wind | |
| CN116398378B (en) | Multi-dimensional state monitoring device and method for wind turbine generator blade | |
| CN210923904U (en) | Transmitter and system for on-line checking gas density relay | |
| CN210775760U (en) | Transmitter and system for automatic on-line density checking relay | |
| CN101975662B (en) | Wind generating set load testing system meeting IEC61400-13 standard | |
| CN203837517U (en) | Temperature control system of air cooling island | |
| CN206862559U (en) | A kind of SF6 density monitors temperature-compensating calibration equipment | |
| CN113982858A (en) | Blade integrity monitoring system and method | |
| CN109854460A (en) | Fan blade detection method and device | |
| CN109455289B (en) | High-altitude latex translation sounding balloon | |
| CN211318086U (en) | On-site detection device and system for realizing maintenance-free gas density relay | |
| CN204314252U (en) | A kind of leakage of refrigerant detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |