CN101846547A - Vibration detecting device of wind-driven generator - Google Patents

Abstract

The invention relates to a vibration detecting device, in particular to a vibration detecting device of a wind-driven generator. The invention adopts the following technical scheme that the vibration detecting device of the wind-driven generator comprises a blade, wherein a blade tip, a blade middle and a blade root of the blade are all distributed with vibration sensors; the output ends of the vibration sensors are connected with the input end of a vibration collector; the vibration collector transmits vibration signals which are outputted by the vibration sensors to a vibration spectrum analyzer; and the vibration spectrum analyzer receives the vibration signals and transmits spectra of the vibration signals to a main controller through a communication module. The invention can detect the vibratory output of the blade in real time and save the overhaul time of the blade and is safe and reliable.

Description

Vibration detecting device of wind-driven generator

Technical field

The present invention relates to a kind of vibration detection device, especially a kind of vibration detecting device of wind-driven generator belongs to the technical field of aerogenerator.

Background technology

Aerogenerator is a kind ofly to utilize the pneumatic equipment blades made capturing wind energy, and is converted into mechanical energy, and then drives the energy machinery of generator for electricity generation.Aerogenerator generally is installed in the abundant area of wind energy resources, and the blade diameter of aerogenerator is big, blade each several part discontinuity, and it is frequent to quicken, slow down, and causes the damage of blade easily.When the vane stress of aerogenerator is inhomogeneous, can cause the vibration of aerogenerator, when vibratory output is excessive, can influence the safe operation of aerogenerator, influence the generating efficiency of aerogenerator.

Because domestic wind-power electricity generation industry is started late, that is that all right is ripe for the manufacturing technology of wind power generating set, wind power generating set needs the service technician of specialty that wind power generating set is carried out prophylactic repair, maintenance or fault handling to guarantee the reliability service of wind power generating set in the operation phase usually.Service technician need be climbed height and use the collection of hand-held field test instrument to arrange the data of monitoring point in 40～80 meters wind-power electricity generation cabin, and overhaul according to this under wind power generating set be in stopped status.Because wind energy turbine set wind power generating set quantity and separate unit wind power generating set monitoring point are more, cause the service technician repeated labor and have also brought the loss of generated energy to wind energy turbine set because of maintenance causes shutdown.Simultaneously, after the data acquisition of wind power generating set is finished, also need analyze image data, be not easy to understand the real-time running state of wind power generating set in the laboratory.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, a kind of vibration detecting device of wind-driven generator is provided, it can detect the vibratory output of blade in real time, saves the repair time of blade, provides safe and reliable environment to the operation of aerogenerator.

According to technical scheme provided by the invention, described a kind of vibration detecting device of wind-driven generator comprises blade; In the blade tip of described blade, the leaf and blade root portion all establish and be laid with vibration transducer, the output terminal of described vibration transducer links to each other with the input end of vibration acquisition device, described vibration acquisition device is transferred to vibration spectrum analyzer with the vibration signal of vibration transducer output, described vibration spectrum analyzer receives described vibration signal, and the frequency spectrum of described vibration signal is transferred to master controller by communication module.

Described vibration spectrum analyzer receives the vibration signal of vibration acquisition device input, and the frequency spectrum of described vibration signal is stored in the memory module.Described vibration transducer comprises acceleration transducer and displacement transducer.The sample frequency of described vibration acquisition device is 0.1Hz～30Hz.

Advantage of the present invention: in the blade tip of blade, leaf and blade root portion vibration transducer is set, analyze the vibration situation of blade corresponding position respectively by spectrum analyzer, it is good to detect real-time.When blade sustains damage, can the impaired position of locating blades by master controller and memory module, can reduce time to the blade maintenance, convenient and swift, safe and reliable.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Embodiment

The invention will be further described below in conjunction with concrete drawings and Examples.

As shown in Figure 1: the present invention includes blade 1,vibration transducer 2,vibration acquisition device 3,vibration spectrum analyzer 4,communication module 5,memory module 6 andmaster controller 7.

As shown in Figure 1: in the blade tip of described blade 1, leaf and blade root portion be provided withvibration transducer 2; Describedvibration transducer 2 detects in the blade tip, leaf of blade 1 respectively and the vibratory output of the stressed generation of blade root portion.Describedvibration acquisition device 3 receives the vibratory output thatvibration transducer 2 is gathered, and is transferred in the vibration spectrum analyzer 4.The sample frequency of describedvibration acquisition device 3 is 0.1Hz～30Hz.Describedvibration spectrum analyzer 4 receives the vibratory output ofvibration acquisition device 3 inputs, and extracts the frequency spectrum of described vibratory output, and is transferred in themaster controller 7 by communication module 5.Describedmaster controller 7 is judged the forced vibration situation of blade 1 according to the spectral magnitude and the frequency relation of vibratory output; Andmaster controller 7 can be exported the frequency spectrum of vibratory output by man-machine interface, be convenient to the situation that the technician observesblade 7 various piece forced vibrations.Describedvibration spectrum analyzer 4 analyzes the vibratory output of blade 1 each several part, can also store in thememory module 6, when stressed damage appears in blade 1, can be by extracting the rumble spectrum information in thememory module 6, the position of damage appears in locating blades 1 fast, save the time of maintenance blade 1, improve the utilization factor of aerogenerator.

Describedvibration transducer 2 comprises acceleration transducer and displacement transducer, is used to detect the vibratory output of the stressed generation of blade 1 counterpart.

Pick-up unit of the present invention is simple in structure, by the corresponding position on blade 1 the forced vibration amount that vibration transducer 2 detects blade 1 is installed, thereby can judge the running status of blade 1 according to the vibratory output of blade 1 each several part.When blade 1 sustains damage, when out of service, by searching the rumble spectrum information ofmemory module 6 stored, the position of damage appears in locating blades 1 fast, can analyze and keep in repair blade 1 effectively, save the time, improve the utilization factor of aerogenerator.

Claims (4)

1. vibration detecting device of wind-driven generator, comprise blade (1), it is characterized in that: in the blade tip of described blade (1), the leaf and blade root portion all establish and be laid with vibration transducer (2), the output terminal of described vibration transducer (2) links to each other with the input end of vibration acquisition device (3), described vibration acquisition device (3) is transferred to vibration spectrum analyzer (4) with the vibration signal of vibration transducer (2) output, described vibration spectrum analyzer (4) receives described vibration signal, and the frequency spectrum of described vibration signal is transferred to master controller (7) by communication module (5).

2. vibration detecting device of wind-driven generator according to claim 1 is characterized in that: described vibration spectrum analyzer (4) receives the vibration signal of vibration acquisition device (3) input, and the frequency spectrum of described vibration signal is stored in the memory module (6).

3. vibration detecting device of wind-driven generator according to claim 1 is characterized in that: described vibration transducer (2) comprises acceleration transducer and displacement transducer.

4. vibration detecting device of wind-driven generator according to claim 1 is characterized in that: the sample frequency of described vibration acquisition device (3) is 0.1Hz～30Hz.

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