CN201387434Y - Vibration acceleration meter of wind-driven generator nacelle - Google Patents
Vibration acceleration meter of wind-driven generator nacelle Download PDFInfo
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- CN201387434Y CN201387434Y CN200920126480U CN200920126480U CN201387434Y CN 201387434 Y CN201387434 Y CN 201387434Y CN 200920126480 U CN200920126480 U CN 200920126480U CN 200920126480 U CN200920126480 U CN 200920126480U CN 201387434 Y CN201387434 Y CN 201387434Y
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- vibration acceleration
- operational amplifier
- integrated operational
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Abstract
The utility model discloses a vibration acceleration meter of a wind-driven generator nacelle, which comprises a signal acquisition circuit and a signal processing circuit, wherein the signal acquisition circuit is used for detecting vibration accelerations of the nacelle in two directions, the signal processing circuit is used for respectively processing and outputting the acquired vibration accelerations in two directions, output ends of the signal acquisition circuit for outputting signals of vibration accelerations in two directions are connected to two filter/amplifier units, a voltage input end of the signal acquisition circuit is used for being connected with a power source, and output ends of the two filter/amplifier units are used for being electrically connected with a fan control system. Through the signal acquisition circuit used for detecting vibration accelerations of the nacelle in two directions and the signal processing circuit used for respectively processing and outputting the acquired vibration accelerations in two directions, the vibration acceleration meter can measure vibration accelerations of the fan in an X direction and an Y direction, provide vibration acceleration signals in two directions for the fan control system and effectively control normal operation of the wind-driven generator.
Description
Technical field
The utility model relates to a kind of vibration acceleration measurement mechanism, particularly a kind of vibration acceleration measuring appliance of engine rooms of wind power generators.
Background technology
To the development and use of wind energy, be subjected to the great attention of countries in the world at present.Usually wind power generating set is up to rice up to a hundred, tons up to a hundred weigh, even hundreds of tons, because the influence that wind power generating set changes because of the rotation of wind wheel and wind speed in operational process, unavoidably can comprise the vibration of low frequency, the process of vibration can be brought influence to unit physical construction, and excessive vibration can reduce unit durability, even the major accident that directly causes unit to cave in.Therefore the real-time monitoring of vibration of wind generating set acceleration and control are become and important, the vibration acceleration measuring technique then is to measure the vibration acceleration of blower fan in rotation process to change, and is the very important ingredient of wind turbine control system; Yet the vibration of wind generating set acceleration blower fan left and right directions X of cabin (be to) low-frequency vibration and blower fan the fore-and-aft direction Y of cabin (be to) low-frequency vibration often exists simultaneously, but existing wind power generating set does not also detect the measurement mechanism of blower fan X, Y direction vibration acceleration, especially can't measure X, Y direction low-frequency vibration acceleration, therefore can't grasp the improper operating condition that blower fan forms because of low-frequency vibration and control, cause blower fan under improper operating condition, to move, shorten unit serviceable life.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, a kind of vibration acceleration measuring appliance of engine rooms of wind power generators is provided, this vibration acceleration measurement module is installed in wind generator tower tube top detects the cabin vibration, by the signal processing circuit that is used to detect the signal acquisition circuit of cabin both direction vibration acceleration and the both direction vibration acceleration signal of gathering is handled output respectively, detect blower fan X, Y direction vibration acceleration, and, can effectively control aerogenerator and run well for blower fan control system provides the vibration acceleration signal of both direction.
The purpose of this utility model is achieved in that and comprises the signal processing circuit that is used to detect the signal acquisition circuit of cabin both direction vibration acceleration and the both direction vibration acceleration signal of gathering is handled output respectively, described signal acquisition circuit has the output terminal of output both direction vibration acceleration signal, described signal processing circuit comprises handles X respectively, two filtering/amplifying units of the vibration acceleration signal of Y both direction, the output terminal of the output both direction vibration acceleration signal of described signal acquisition circuit connects two filtering/amplifying units respectively, the voltage input end of signal acquisition circuit is used to connect power supply, and the output terminal of two filtering/amplifying units is used to be electrically connected blower fan control system.
Described signal acquisition circuit is made of acceleration chip and resistance, electric capacity, diode, the voltage input end of described acceleration chip connects positive voltage, with voltage input end through capacity earth, the one vibration acceleration signal output termination of acceleration chip is handled vibration acceleration signal filtering, the amplifying unit of directions X, another vibration acceleration signal output termination is handled vibration acceleration signal filtering, the amplifying unit of Y direction, the control end of acceleration chip by and the resistance, the diode ground connection that connect, the earth terminal ground connection of acceleration chip.
Two filtering/amplifying unit structure of the vibration acceleration signal of handling X, Y both direction respectively of described signal processing circuit is identical, a filtering/amplifying unit comprises the one-level amplification that contains integrated operational amplifier, the secondary amplification that contains integrated operational amplifier and three grades of amplifications that contain integrated operational amplifier, the in-phase input end of the integrated operational amplifier that one-level is amplified connects the output terminal of a direction vibration acceleration signal of output of signal acquisition circuit, with through a capacity earth, the inverting input of integrated operational amplifier and output terminal parallel connection; The in-phase input end ground connection of the integrated operational amplifier that secondary amplifies, the inverting input of the integrated operational amplifier that secondary amplifies connects the output terminal of the integrated operational amplifier that one-level amplifies, series connection one filtering circuit between inverting input and the output terminal through a resistance; The in-phase input end ground connection of the integrated operational amplifier of three grades of amplifications, the inverting input of the integrated operational amplifier of three grades of amplifications connects the output terminal of the integrated operational amplifier of secondary amplification through a resistance, series connection one filtering circuit between inverting input and the output terminal, output terminal is through the resistance machine control system of giving a dinner for a visitor from afar, and resistance is through diode ground connection; Signal processing circuit also comprises a reference voltage amplifier stage, the inverting input of the integrated operational amplifier of this reference voltage amplifier stage connects reference voltage through a resistance, series connection one resistance between inverting input and the output terminal, be connected resistance respectively, the in-phase input end ground connection of integrated operational amplifier between the inverting input of output terminal and the integrated operational amplifier of secondary, three grades of amplifications.
Owing to adopted such scheme; this vibration acceleration analysis device is installed in wind generator tower tube top detects the cabin vibration; by being used to detect the signal acquisition circuit of cabin both direction vibration acceleration; the reliable measurements that the low-frequency vibration of blower fan left and right directions and the low-frequency vibration of blower fan fore-and-aft direction of wind power generating set continued, and reliably protecting is provided when amplitude transfinites.By the both direction vibration acceleration signal of gathering being handled the signal processing circuit of output respectively, utilize binary channels to carry out filtering, processing and amplifying respectively, then respectively to blower fan control system output electric signal, for blower fan control system provides the both direction vibration acceleration signal, send control signal corresponding after blower fan control system can be handled vibration acceleration signal identification, the control aerogenerator runs well.Because signal processing circuit adopts two filtering/amplifying units of the vibration acceleration signal of handling X, Y both direction respectively, make the vibration acceleration signal of both direction can access processing respectively, can avoid the cross interference of the vibration acceleration signal of both direction, for blower fan control system provides clear, accurate low-frequency vibration acceleration signal, improve blower fan control system vibration acceleration signal is discerned.
Because two filtering/amplifying units handling the vibration acceleration signal of X, Y both direction respectively are three grades of amplifications, after filtering and three grades of amplifications, the signal after can guaranteeing to handle is more clear, accurate.
The device of this vibration acceleration analysis simultaneously simple in structure, cost of manufacture is low, but can prolong the serviceable life of the wind power generating set of high cost of manufacture.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the physical circuit figure of signal acquisition circuit of the present utility model;
Fig. 3 is the physical circuit figure of signal processing circuit of the present utility model.
Embodiment
Referring to Fig. 1, the vibration acceleration measuring appliance of the engine rooms of wind power generators of present embodiment comprises the signal processing circuit that is used to detect the signal acquisition circuit 2 of cabin both direction vibration acceleration and the both direction vibration acceleration signal of gathering is handled output respectively.Described signal acquisition circuit 2 has the output terminal of output both direction vibration acceleration signal, described signal processing circuit comprises handles X respectively, two filtering/amplifying units 3 of the vibration acceleration signal of Y both direction, 4, the output terminal of the output both direction vibration acceleration signal of described signal acquisition circuit connects two filtering/amplifying units 3 respectively, 4, the voltage input end of signal acquisition circuit 2 is used to connect power supply 1, power supply 1 adopts the DC-DC power supply, by this power supply be, for signal acquisition circuit and signal processing circuit provide ± 15V voltage, the output terminal of two filtering/amplifying units is used to be electrically connected blower fan control system 5.
Fig. 2 is the specific embodiment that is used to detect the signal acquisition circuit 2 of cabin both direction vibration acceleration.Described signal acquisition circuit is by acceleration chip and resistance, electric capacity, diode constitutes, described acceleration chip D2 adopts the ADXL322 chip of XL series, has high sensitivity, low-power consumption, low noise, the advantage of wide power voltage, so effect is good, voltage input end 14 pin of this acceleration chip D2, connect positive voltage after the 15 pin parallel connections, with voltage input end through a capacitor C 11 ground connection, vibration acceleration signal output terminal 12 pin of the directions X of acceleration chip D2 connect the vibration acceleration signal filtering of handling directions X, amplifying unit 3, vibration acceleration signal output terminal 10 pin of Y direction connect the vibration acceleration signal filtering of handling the Y direction, amplifying unit 4, control end 2 pin of acceleration chip D2 by and the resistance R 7 that connects, diode V3 ground connection, earth terminal 3 pin of acceleration chip D2,5 pin, 6 pin, 7 pin ground connection.
Fig. 3 is the specific embodiment of signal processing circuit.Two filtering/amplifying unit structure of the vibration acceleration signal of handling X, Y both direction respectively of described signal processing circuit is identical, directions X and Y direction vibration acceleration signal that the formation binary channels is exported respectively signal acquisition circuit carry out filtering, processing and amplifying, and are transferred to blower fan control system.Wherein, filtering/the amplifying unit of directions X signal comprises the one-level amplification that contains integrated operational amplifier, the secondary amplification that contains integrated operational amplifier and three grades of amplifications that contain integrated operational amplifier, the in-phase input end of the integrated operational amplifier D4C that one-level is amplified connects the output terminal of the output directions X vibration acceleration signal of signal acquisition circuit, with in-phase input end through a capacitor C 12 ground connection, the inverting input of integrated operational amplifier D4C and output terminal parallel connection; The in-phase input end ground connection of the integrated operational amplifier D5A that secondary amplifies, the inverting input of the integrated operational amplifier D5A that secondary amplifies connects the output terminal of the integrated operational amplifier D4C of one-level amplification through a resistance R 9, series connection one filtering circuit between inverting input and the output terminal, this filtering circuit is made up of two resistance R 10, R11 series connection back capacitor C 14 in parallel, and wherein resistance R 11 adopts semifixed resistor; The in-phase input end ground connection of the integrated operational amplifier D5C of three grades of amplifications, the inverting input of the integrated operational amplifier D5C of three grades of amplifications connects the output terminal of the integrated operational amplifier D5A of secondary amplification through a resistance R 14, series connection one filtering circuit between inverting input and the output terminal, this filtering circuit is composed in parallel by capacitor C 16 and resistance R 15, output terminal is through a resistance R 16 machine control system of giving a dinner for a visitor from afar, for blower fan control system provides the vibration acceleration voltage signal of directions X, resistance R 16 is through diode V4 ground connection; The in-phase input end of the integrated operational amplifier D4D that the one-level of the filtering/amplifying unit of Y direction signal is amplified connects the output terminal of the output Y direction vibration acceleration signal of signal acquisition circuit, with in-phase input end through a capacitor C 13 ground connection, the inverting input of integrated operational amplifier D4D and output terminal parallel connection; The in-phase input end ground connection of the integrated operational amplifier D5B that secondary amplifies, the inverting input of the integrated operational amplifier D5B that secondary amplifies connects the output terminal of the integrated operational amplifier D4D of one-level amplification through a resistance R 23, series connection one filtering circuit between inverting input and the output terminal, this filtering circuit is made up of two resistance R 24, R25 series connection back capacitor C 15 in parallel, and wherein resistance R 25 adopts semifixed resistor; The in-phase input end ground connection of the integrated operational amplifier D5D of three grades of amplifications, the inverting input of the integrated operational amplifier D5D of three grades of amplifications connects the output terminal of the integrated operational amplifier D5B of secondary amplification through a resistance R 26, series connection one filtering circuit between inverting input and the output terminal, this filtering circuit is composed in parallel by capacitor C 17 and resistance R 27, output terminal is through a resistance R 28 machine control system of giving a dinner for a visitor from afar, for blower fan control system provides the vibration acceleration voltage signal of Y direction, resistance R 28 is through diode V5 ground connection.Described signal processing circuit also comprises a reference voltage amplifier stage, the inverting input of the integrated operational amplifier D4A of this reference voltage amplifier stage meets reference voltage VR through a resistance R 17, series connection one resistance R 18 between inverting input and the output terminal, two resistance R 13, R12 connect between the inverting input of the integrated operational amplifier D5A that the secondary of output terminal and directions X signal amplifies, wherein resistance R 12 is a semifixed resistor, resistance in series R21 between the inverting input of the integrated operational amplifier D5C of three grades of amplifications of output terminal and directions X signal; Two resistance R 19, R20 connect between the inverting input of the output terminal of integrated operational amplifier D4A and the integrated operational amplifier D5B of the secondary amplification of Y direction signal simultaneously, wherein resistance R 20 is a semifixed resistor, resistance in series R22 between the inverting input of the integrated operational amplifier D5D of three grades of amplifications of output terminal and Y direction signal; The in-phase input end ground connection of integrated operational amplifier D4A.
The vibration acceleration measuring appliance of described engine rooms of wind power generators can be made into module, makes easy for installation.
The vibration acceleration measuring appliance of this engine rooms of wind power generators can be installed in wind power generating set tower tube top and detect the cabin vibration, the reliable measurements that the low-frequency vibration of wind power generating set is continued, and reliably protecting is provided when amplitude transfinites.The vibration acceleration measuring appliance is by detecting the variation of blower fan left and right directions low-frequency vibration and blower fan fore-and-aft direction low-frequency vibration acceleration, and be converted to the analog voltage signal that is directly proportional with vibration acceleration, through filtering, processing and amplifying output voltage signal, offer blower fan control system and handle.Blower fan control system obtains acceleration signal, discern processing after, send corresponding control signal.Send stop instruction when vibration is excessive, blower fan is shut down, the blade feathering; If vibration acceleration is in normal range, then blower fan runs well.
Claims (3)
1. the vibration acceleration measuring appliance of an engine rooms of wind power generators, it is characterized in that: comprise the signal processing circuit that is used to detect the signal acquisition circuit of cabin both direction vibration acceleration and the both direction vibration acceleration signal of gathering is handled output respectively, described signal acquisition circuit has the output terminal of output both direction vibration acceleration signal, described signal processing circuit comprises handles X respectively, two filtering/amplifying units of the vibration acceleration signal of Y both direction, the output terminal of the output both direction vibration acceleration signal of described signal acquisition circuit connects two filtering/amplifying units respectively, the voltage input end of signal acquisition circuit is used to connect power supply, and the output terminal of two filtering/amplifying units is used to be electrically connected blower fan control system.
2. the vibration acceleration measuring appliance of engine rooms of wind power generators according to claim 1, it is characterized in that: described signal acquisition circuit is by acceleration chip and resistance, electric capacity, diode constitutes, the voltage input end of described acceleration chip connects positive voltage, with voltage input end through capacity earth, the one vibration acceleration signal output termination of acceleration chip is handled the vibration acceleration signal filtering of directions X, amplifying unit, another vibration acceleration signal output termination is handled the vibration acceleration signal filtering of Y direction, amplifying unit, the control end of acceleration chip by and the resistance that connects, diode ground connection, the earth terminal ground connection of acceleration chip.
3. the vibration acceleration measuring appliance of engine rooms of wind power generators according to claim 1, it is characterized in that: the X of processing respectively of described signal processing circuit, two filtering/amplifying unit structure of the vibration acceleration signal of Y both direction is identical, a filtering/amplifying unit comprises the one-level amplification that contains integrated operational amplifier, the secondary that contains integrated operational amplifier amplifies and contains three grades of amplifications of integrated operational amplifier, the in-phase input end of the integrated operational amplifier that one-level is amplified connects the output terminal of a direction vibration acceleration signal of output of signal acquisition circuit, with through a capacity earth, the inverting input of integrated operational amplifier and output terminal parallel connection; The in-phase input end ground connection of the integrated operational amplifier that secondary amplifies, the inverting input of the integrated operational amplifier that secondary amplifies connects the output terminal of the integrated operational amplifier that one-level amplifies, series connection one filtering circuit between inverting input and the output terminal through a resistance; The in-phase input end ground connection of the integrated operational amplifier of three grades of amplifications, the inverting input of the integrated operational amplifier of three grades of amplifications connects the output terminal of the integrated operational amplifier of secondary amplification through a resistance, series connection one filtering circuit between inverting input and the output terminal, output terminal is through the resistance machine control system of giving a dinner for a visitor from afar, and resistance is through diode ground connection; Signal processing circuit also comprises a reference voltage amplifier stage, the inverting input of the integrated operational amplifier of this reference voltage amplifier stage connects reference voltage through a resistance, series connection one resistance between inverting input and the output terminal, be connected resistance respectively, the in-phase input end ground connection of integrated operational amplifier between the inverting input of output terminal and the integrated operational amplifier of secondary, three grades of amplifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126480U CN201387434Y (en) | 2009-02-27 | 2009-02-27 | Vibration acceleration meter of wind-driven generator nacelle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126480U CN201387434Y (en) | 2009-02-27 | 2009-02-27 | Vibration acceleration meter of wind-driven generator nacelle |
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| Publication Number | Publication Date |
|---|---|
| CN201387434Y true CN201387434Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920126480U Expired - Lifetime CN201387434Y (en) | 2009-02-27 | 2009-02-27 | Vibration acceleration meter of wind-driven generator nacelle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387434Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454448A (en) * | 2013-01-17 | 2013-12-18 | 成都阜特科技股份有限公司 | Low-frequency acceleration sensor transmitter |
| CN105298758A (en) * | 2015-09-29 | 2016-02-03 | 重庆科凯前卫风电设备有限责任公司 | Acceleration sensing system of wind driven generator |
-
2009
- 2009-02-27 CN CN200920126480U patent/CN201387434Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454448A (en) * | 2013-01-17 | 2013-12-18 | 成都阜特科技股份有限公司 | Low-frequency acceleration sensor transmitter |
| CN105298758A (en) * | 2015-09-29 | 2016-02-03 | 重庆科凯前卫风电设备有限责任公司 | Acceleration sensing system of wind driven generator |
| CN105298758B (en) * | 2015-09-29 | 2018-06-26 | 重庆科凯前卫风电设备有限责任公司 | A kind of wind-driven generator acceleration sensing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHONGQING QIANWEI INSTRUMENT CO., LTD. Free format text: FORMER NAME: CHONGQING QIANWEI METER FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 401121 Chongqing New District, Mount Huangshan Road, No. 69 Patentee after: Chongqing Qianwei Instrument Co., Ltd. Address before: 400021 three village, Dashi dam, Jiangbei District, Chongqing Patentee before: Chongqing Qianwei Meter Factory |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |