CN203515972U - Clamping force monitoring system for bolt connection of wind generating set - Google Patents

Clamping force monitoring system for bolt connection of wind generating set Download PDF

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Publication number
CN203515972U
CN203515972U CN201320589111.1U CN201320589111U CN203515972U CN 203515972 U CN203515972 U CN 203515972U CN 201320589111 U CN201320589111 U CN 201320589111U CN 203515972 U CN203515972 U CN 203515972U
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China
Prior art keywords
bolt
control unit
data acquisition
force sensor
axial force
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CN201320589111.1U
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Chinese (zh)
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李中林
韩德海
李秀珍
阳凌霄
史天宝
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CRRC Zhuzhou Institute Co Ltd
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CSR Zhuzou Institute Co Ltd
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Abstract

The utility model discloses a clamping force monitoring system for bolt connection of a wind generating set. The clamping force monitoring system for bolt connection of the wind generating set comprises a bolt, a bolt axial force sensor, a fastened part, a data acquisition unit, a detection control unit and a main control unit, wherein a stud of the bolt is screwed into the fastened part, the bolt axial force sensor is arranged between a bolt head of the bolt and the fastened part, the bolt axial force sensor is connected with the data acquisition unit, and the data acquisition unit is used for acquiring data from the bolt axial force sensor; the data acquisition unit is connected with the detection control unit, and the detection control unit processes the data acquired by the data acquisition unit, and then generates a logic control signal; the detection control unit is connected with the main control unit, and the main control unit receives the logic control signals from the detection control unit, and carries out safety operation on the wind generating set. The clamping force monitoring system for bolt connection of the wind generating set solves the technical problems that according to an existing bolt monitoring device, stability and reliability of components are low, the range of application is narrow, and the degree of intelligence is low.

Description

Wind power generating set bolt connects clamping force monitoring system
Technical field
The utility model relates to a kind of workpiece load-bearing monitor system, especially relates to a kind of connection clamping force monitoring system that wind power generating set high-strength bolt connects that is applied to.
Background technique
The high-strength bolt of wind power generating set connects the validity that the suitable clamping force of main closing guarantees that structure connects, and existing bolt fastening structure and locking method all can not be realized the direct control (as calibrated wrench method working control moment of torsion, pulling method working control pretension) to clamping force, cannot learn fastening after during with unit operation bolt be connected the situation of actual clamping force, thereby bolted reliability is under some influence.Mainly contain in the prior art following several technological scheme comparatively close with the utility model.
Document 1 is that Nanjing wind-powered electricity generation Science and Technology Ltd. was in application on 08 22nd, 2012, and open on 03 06th, 2013, the Chinese utility model patent < < tower barrel of wind generating set flange bolt supervisory device > > that notification number is CN202770567U.As shown in Figure 1, this model utility discloses a kind of tower barrel of wind generating set flange bolt supervisory device, comprise: T-shaped bolt, monitor strain film, monitor strain sheet and screw, the female thread structure that T-shaped bolt one end is similar nut, be connected with tower drum flange bolt, the other end is threaded screw rod, screw rod is connected with monitor strain film one end, can carry out monitor strain film by the head of stubborn T-shaped bolt is connected with the upper end portion of T-shaped bolt, when T-shaped bolt head tightens to correct position, the monitor strain film the other end is connected with tower drum flange bolt by screw, the head of clamping screw holds out against the head of tower drum flange bolt, monitor strain sheet is fixed on monitor strain film, fixed position is symmetrical up and down with flange phase cross surface.Which adopts the mode of foil gauge, indirectly by T-shaped bolt, is connected with measured bolt, in the strain deformation amount of measuring T-shaped bolt by foil gauge, then by conversion, draws and bolt strained relevant amount.Because foil gauge belongs to damage type, its recycling rate of waterused is not high, and narrower to using scope, can only be for the bolt monitoring of blower fan tower barrel flange.
Document 2 Wei You State Electric United Power Technology Co., Ltd were in application on 02 28th, 2013, and open on 06 19th, 2013, Chinese invention patent application < < built-in type bolt axis force sensor caliberating system and using method > > thereof that publication number is CN103162900A.As shown in Figure 2, this system comprises bolt axial force sensor, axle power meter, extender and data acquisition equipment, bolt axial force sensor is through axle power meter, the front-end face of front end and axle power meter offsets, rear end is screwed and is connected by screw thread with the stretching head of extender, and bolt axial force sensor is all connected with data acquistion system with axle power meter.Using method comprises the following steps: extender repeatedly pressurizeed, unloaded, and the test data of Real-time Collection bolt axial force sensor and cylindrical shaft power meter, formation curve, and obtain the fit equation of strain and axle power.For this model utility, it is mainly used for the demarcation to sensor, and can not be for bolt strained on-line monitoring.
Document 3 is that Hai Keleimo was in application on 08 16th, 1994, and open in 07 month 12 days nineteen ninety-five, the Chinese invention patent application < < fastener tension monitor > > that publication number is CN1105122A.As shown in Figure 3, be used for monitoring the monitoring device of securing means pulling force, fastening device components comprises the fixing bolt of structural member of being used for fixing between them etc. and movable nut.This monitoring device is taked the form at the packing ring between nut and structural member or between bolt head and structural member for securing means.The surface of packing ring has a groove, and this groove extends radially outwardly from the inner circumference of packing ring.In the bottom of groove, have a sunk part, it at least forms a fulcrum in groove.Monitoring is arranged in groove with demonstration tape and under the pulling force effect of secure component, the end of tape can lift and with this, in securing means, form an Observable measurable tension monitor again from groove.For this model utility, be by monitoring and showing that the mode of tape monitors, intelligence not comparatively speaking, and cannot realize the storage of data and collection.
Document 4 is that Tsing-Hua University was in application on 09 19th, 2008, and open on 01 28th, 2009, the Chinese invention patent application < < bolt strained detection device > > that publication number is CN101354300A.As shown in Figure 4, bolt strained detection device belongs to steel structure bolt interconnection technique field, contains: foil gauge, more than two or two, be attached to respectively along in the symmetrical groove excavating of screw rod circumferential axis of bolt head one end, and groove depth is in 1mm.Wire, more than two or two, is entered and is connected respectively with two above foil gauges by the perforation of boring on bolt head, and the position of this perforation and groove are positioned on the straight line that same is parallel to bolt axis.For this model utility, be also the mode that adopts strain chip, cannot carry out data capture and Real-Time Monitoring.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of wind power generating set bolt to connect clamping force monitoring system, the constituent elements stability and the reliability that solve existing bolt supervisory device existence are not high, and Applicable scope is wideless, the technical problem that intelligent degree is not high.
In order to realize above-mentioned model utility object, the utility model specifically provides a kind of wind power generating set bolt to connect the technic relization scheme of clamping force monitoring system, wind power generating set bolt connects a clamping force monitoring system, comprising: bolt, bolt axial force sensor, fastener, data acquisition unit, detection control unit and main control unit.The double-screw bolt of described bolt screws in described fastener, described bolt axis power sensor setting is between the bolt head and fastener of described bolt, described bolt axial force sensor is connected with described data acquisition unit, and described data acquisition unit collection is from the data of described bolt axial force sensor.Described data acquisition unit is connected with described detection control unit, the data that described detection control unit collects described data acquisition unit are processed rear formation logic control signal, described detection control unit is connected with described main control unit, described main control unit receives the logic control signal from described detection control unit, and wind power generating set is carried out to safety operation.
The utility model also specifically provides wind power generating set bolt to connect the another kind of technic relization scheme of clamping force monitoring system, wind power generating set bolt connects a clamping force monitoring system, comprising: bolt, bolt axial force sensor, fastener, nut, data acquisition unit, detection control unit and main control unit.The double-screw bolt of described bolt is through described fastener, described nut is spun on the double-screw bolt of described bolt, described fastener is between the bolt head and nut of described bolt, described bolt axis power sensor setting is between described nut and fastener, described bolt axial force sensor is connected with described data acquisition unit, and described data acquisition unit collection is from the data of described bolt axial force sensor.Described data acquisition unit is connected with described detection control unit, the data that described detection control unit collects described data acquisition unit are processed rear formation logic control signal, described detection control unit is connected with described main control unit, described main control unit receives the logic control signal from described detection control unit, and wind power generating set is carried out to safety operation.
The utility model also specifically provides wind power generating set bolt to connect the third technic relization scheme of clamping force monitoring system, wind power generating set bolt connects a clamping force monitoring system, comprising: bolt, bolt axial force sensor, fastener, nut, data acquisition unit, detection control unit and main control unit.The double-screw bolt of described bolt is through described fastener, and described nut is spun on the double-screw bolt of described bolt, and described fastener is between the bolt head and nut of described bolt, and described bolt axis power sensor setting is between the bolt head and fastener of described bolt.Described bolt axial force sensor is connected with described data acquisition unit, and described data acquisition unit collection is from the data of described bolt axial force sensor.Described data acquisition unit is connected with described detection control unit, the data that described detection control unit collects described data acquisition unit are processed rear formation logic control signal, described detection control unit is connected with described main control unit, described main control unit receives the logic control signal from described detection control unit, and wind power generating set is carried out to safety operation.
Preferably, described monitoring system also comprises pad one and pad two, and described pad one is arranged between described bolt and described bolt axial force sensor, and described pad two is arranged between described bolt axial force sensor and described fastener.
Preferably, described monitoring system also comprises pad three, and described pad three is arranged between described fastener and described bolt axial force sensor, or between described nut and described bolt axial force sensor.
Preferably, described monitoring system also comprises pad three, and described pad three is arranged between described fastener and described nut.
Preferably, described bolt axial force sensor adopts wireless senser, and described data acquisition unit has wireless receiving module, between described bolt axial force sensor and described data acquisition unit, by wireless mode, is connected.
Preferably, described detection control unit is connected with the programmable logic controller (PLC) of described main control unit.
Preferably, described monitoring system comprises plural bolt, and described bolt axial force sensor and the fastener corresponding with bolt quantity, and plural described bolt axial force sensor is connected with described data acquisition unit respectively.
Preferably, described data acquisition unit also comprises mobile storage interface and network connection port, described mobile storage interface is for the data storage of movable storage device, and described network connection port is for being connected to by network transmission and the storage that described data acquisition unit carries out data.
Preferably, the data that described detection control unit collects described data acquisition unit show online, described detection control unit is also carried out minimum and maximum value setting to described bolt stressed, if the stressed threshold range that exceeds of described bolt, described detection control unit transmission warning or error signal, to described main control unit, are carried out corresponding operation by described main control unit to wind power generating set.
The wind power generating set bolt connection clamping force monitoring system providing by implementing above-mentioned the utility model, has following technique effect:
(1) the utility model can be realized bolt strained measurement, by bolt strained variation tendency being carried out to real-time demonstration and the storage of data, has realized bolt strained on-line monitoring;
(2) the utility model system architecture constituent elements is stable, reliable, can monitor all important bolts on wind-powered electricity generation unit simultaneously and connects and can report the bolted position information that transfinites, thereby improve overhaul efficiency;
(3) the utility model can carry out minimum and maximum value to bolt stressed and arranges, if exceed threshold range, can give a warning or error signal, by master control system, blower fan is carried out to respective operations, can guarantee the reliability of bolt validity and blower fan.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of prior art 1 tower barrel of wind generating set flange bolt supervisory device;
Fig. 2 is the structural representation of prior art 2 built-in type bolt axis force sensor caliberating systems;
Fig. 3 is the structural representation of prior art 3 fastener tension monitors;
Fig. 4 is the structural representation of prior art 4 bolt strained detection devices;
Fig. 5 is the system architecture composition schematic diagram that the utility model wind power generating set bolt connects a kind of embodiment of clamping force monitoring system;
Fig. 6 is that the utility model wind power generating set bolt connection clamping force monitoring system is carried out the waveform schematic diagram of Real-Time Monitoring to bolt strained load;
Fig. 7 is the structural representation that the utility model wind power generating set bolt connects the DSV type bolt of applying in clamping force monitoring system;
Fig. 8 is the structural representation that the utility model wind power generating set bolt connects the ESV type bolt of applying in clamping force monitoring system;
In figure: 1-bolt, 2-pad one, 3-bolt axial force sensor, 4-pad two, 5-fastener, 6-pad three, 7-nut, 8-data acquisition unit, 9-detection control unit, 10-main control unit.
Embodiment
For quote and know for the purpose of, by the technical term hereinafter using, write a Chinese character in simplified form or abridge and be described below:
DSV type bolt: bolt screw-on machine build bolt;
ESV type bolt: bolt and nut connected type bolt;
PLC:Programmable Logic Controller, the abbreviation of programmable logic controller (PLC), PLC is the electronic equipment of the digital operation operation of a kind of special application under industrial environment and design.It adopts the storage that can program, the portion within it that is used for stores the instruction that actuating logic computing, sequential operation, timing, counting and arithmetical operation etc. operate, and can, by digital or analog input and output, control various types of machinery or production process.
For making the utility model embodiment's object, technological scheme and advantage clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
If accompanying drawing 5 is to as shown in accompanying drawing 8, provided the specific embodiment of the utility model wind power generating set bolt connection clamping force monitoring system, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1: wind power generating set bolt connects clamping force monitoring system, comprising: bolt 1, bolt axial force sensor 3, fastener 5, data acquisition unit 8, detection control unit 9 and main control unit 10.The double-screw bolt of bolt 1 screws in fastener 5, and bolt axial force sensor 3 is arranged between the bolt head and fastener 5 of bolt 1.Bolt axial force sensor 3 is connected with data acquisition unit 8, the data that data acquisition unit 8 gathers from bolt axial force sensor 3.Data acquisition unit 8 is connected with detection control unit 9, and 9 pairs of data of detection control unit show online, and the data that data acquisition unit 8 is collected are processed rear formation logic control signal.Detection control unit 9 is connected with main control unit 10, the logic control signal that main control unit 10 receives from detection control unit 9, and wind power generating set is carried out to safety operation.Bolt 1 in this specific embodiment adopts the structure of bolt screw-in body (DSV) type as shown in Figure 7, and bolt axial force sensor 3 is arranged on the first side of bolt near bolt 1.
Embodiment 2: as shown in Figure 5, wind power generating set bolt connects clamping force monitoring system, comprising: bolt 1, bolt axial force sensor 3, fastener 5, nut 7, data acquisition unit 8, detection control unit 9 and main control unit 10.The double-screw bolt of bolt 1 is through fastener 5, and nut 7 is spun on the double-screw bolt of bolt 1, and fastener 5 is between the bolt head and nut 7 of bolt 1, and bolt axial force sensor 3 is arranged between the bolt head and fastener 5 of bolt 1.Bolt axial force sensor 3 is connected with data acquisition unit 8, the data that data acquisition unit 8 gathers from bolt axial force sensor 3.Data acquisition unit 8 is connected with detection control unit 9, and 9 pairs of data of detection control unit show online, and the data that data acquisition unit 8 is collected are processed rear formation logic control signal.Detection control unit 9 is connected with main control unit 10, the logic control signal that main control unit 10 receives from detection control unit 9, and wind power generating set is carried out to safety operation.Bolt 1 in this specific embodiment adopts the structure of bolt and nut connection (ESV) type as shown in Figure 8, and bolt axial force sensor 3 is arranged on the first side of bolt near bolt 1.
As a kind of preferably specific embodiment of the utility model, on embodiment 1 and embodiment's 2 basis, monitoring system also comprises further pad 1 and pad 24, pad 1 is arranged between bolt 1 and bolt axial force sensor 3, and pad 24 is arranged between bolt axial force sensor 3 and fastener 5.On embodiment 2 basis, monitoring system also further comprises pad 36, and pad 36 is arranged between fastener 5 and nut 7.When mounted, by hydraulic spanner or extender mode pretension bolt 1, by bolt axial force sensor 3 being arranged on to pad 1 and pad 24, can effectively guarantee the lifting surface area of bolt axial force sensor 3.The size of the size of bolt axial force sensor 3 and tested bolt 1 matches, for bolt 1 is subject to measurement of force.As the utility model another kind specific embodiment preferably, bolt axial force sensor 3 adopts the sensor of gasket type structures, and which directly substitutes the function of pad 1, pad 24 and original sensors by the bolt axial force sensor 3 of gasket type structure.
Embodiment 3: wind power generating set bolt connects clamping force monitoring system, comprising: bolt 1, bolt axial force sensor 3, fastener 5, nut 7, data acquisition unit 8, detection control unit 9 and main control unit 10.The double-screw bolt of bolt 1 is through fastener 5, and nut 7 is spun on the double-screw bolt of bolt 1, and fastener 5 is between the bolt head and nut 7 of bolt 1, and bolt axial force sensor 3 is arranged between nut 7 and fastener 5.Bolt axial force sensor 3 is connected with data acquisition unit 8, the data that data acquisition unit 8 gathers from bolt axial force sensor 3.Data acquisition unit 8 is connected with detection control unit 9, and 9 pairs of data of detection control unit show online, and the data that data acquisition unit 8 is collected are processed rear formation logic control signal.Detection control unit 9 is connected with main control unit 10, the logic control signal that main control unit 10 receives from detection control unit 9, and wind power generating set is carried out to safety operation.Bolt 1 in this specific embodiment adopts the structure of bolt and nut connected type (ESV) as shown in Figure 8.As a kind of preferably specific embodiment of the utility model, on embodiment 3 basis, monitoring system also further comprises pad 36, pad 36 is arranged between fastener 5 and bolt axial force sensor 3, or between nut 7 and bolt axial force sensor 3, bolt axial force sensor 3 is arranged on nut 7 one sides near bolt 1.
As a kind of preferably specific embodiment of the utility model, monitoring system comprises plural bolt 1, and the bolt axial force sensor 3 corresponding with bolt 1 quantity and fastener 5, plural bolt axial force sensor 3 is connected with data acquisition unit 8 respectively.Bolt axial force sensor 3 adopts wireless sensers, and data acquisition unit 8 has wireless receiving module, between bolt axial force sensor 3 and data acquisition unit 8, by wireless mode, is connected.Detection control unit 9 is further connected with the programmable logic controller (PLC) (PLC) of main control unit 10.When system need to be monitored a plurality of bolt 1, data acquisition unit 8 is comprised of multichannel collecting unit, the data capture of carrying out a plurality of bolts 1 that can be real-time.Position and the relevant information of the bolt 1 that monitoring system can also real-time feedback goes wrong.As shown in Figure 6, be that the wind power generating set bolt connection clamping force monitoring system that the utility model specific embodiment is described is carried out the waveform schematic diagram of Real-Time Monitoring to bolt strained load.For bolt axial force sensor 3, can adopt wireless senser, can reduce data line, for 8 needs of data acquisition unit, possess wireless receiving function.For long structure as this in blower fan tower barrel, adopt wireless connections can save a large amount of cables, reduce system construction difficulty.Also can adopt the wired and wireless mode loading in mixture, such as adopt wired connection in the relatively concentrated cabin of bolt 1 link position, and bolt 1 in tower cylinder connects employing wireless connections mode simultaneously.
As a kind of preferably specific embodiment of the utility model, data acquisition unit 8 also comprises mobile storage interface and network connection port, mobile storage interface is for the data storage of movable storage device, and network connection port is for being connected to by network transmission and the storage that data acquisition unit 8 carries out data.9 pairs of bolts 1 of detection control unit stressed carries out minimum and maximum value setting; if the stressed threshold range that exceeds of bolt 1; detection control unit 9 transmission warnings or error signal are to main control unit 10; this signal comprises the mounting point information of the bolt 1 breaking down; by 10 pairs of wind power generating set of main control unit, carry out corresponding operation, as emergency shutdown.The collection of carrying out data by data acquisition unit 8 is stored, and is connected to detection control unit 9, and wherein detection control unit 9 can become one with data acquisition unit 8.Detection control unit 9 possesses online data and shows and logic control function, can carry out corresponding numbering to the bolt 1 of construction bolt axial force sensor 3 simultaneously, is convenient to bolt 1 to follow the tracks of.The utility model can be realized the connection clamping force of wind power generating set bolt 1 and measure in real time and judgement, guarantees the stable and reliability of wind power generating set.Meanwhile, the data that can realize bolt 1 show monitoring in real time, thereby guidance is verified and improved to relevant design and manufacturing process, can see in real time stressed numerical value and the situation of change thereof of bolt 1 by monitoring system.By monitoring system, can also carry out threshold value control to the stressed numerical value of bolt 1, exceed threshold value and feed back coherent signal to the PLC of main control unit 10, main control unit 10 can be processed in time and be converted into relevant information wind power generating set relevant control is operated.The technological scheme that the utility model embodiment is described has formed a complete monitoring and diagnosis system, can long-time running, each several part all adopts reliable and stable parts to form, can be connected for the wind power generating set of different size model customized judgement with bolt and the strategy of reporting to the police simultaneously, adaptability is wider, more intelligent, can monitor all important bolts in wind power generating set simultaneously and connect, and report the bolted position information that transfinites, thereby improve overhaul efficiency.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiments, between each embodiment identical similar part mutually referring to.
The above, be only preferred embodiment of the present utility model, not the utility model done to any pro forma restriction.Although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model.Any those of ordinary skill in the art, in the situation that not departing from Spirit Essence of the present utility model and technological scheme, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore; every content that does not depart from technical solutions of the utility model; according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solutions of the utility model protect.

Claims (11)

1. wind power generating set bolt connects a clamping force monitoring system, it is characterized in that, comprising: bolt (1), bolt axial force sensor (3), fastener (5), data acquisition unit (8), detection control unit (9) and main control unit (10); The double-screw bolt of described bolt (1) screws in described fastener (5), described bolt axial force sensor (3) is arranged between the bolt head and fastener (5) of described bolt (1), described bolt axial force sensor (3) is connected with described data acquisition unit (8), and described data acquisition unit (8) gathers the data from described bolt axial force sensor (3); Described data acquisition unit (8) is connected with described detection control unit (9), the data that described detection control unit (9) collects described data acquisition unit (8) are processed rear formation logic control signal, described detection control unit (9) is connected with described main control unit (10), described main control unit (10) receives the logic control signal from described detection control unit (9), and wind power generating set is carried out to safety operation.
2. a wind power generating set bolt connects clamping force monitoring system, it is characterized in that, comprising: bolt (1), bolt axial force sensor (3), fastener (5), nut (7), data acquisition unit (8), detection control unit (9) and main control unit (10); The double-screw bolt of described bolt (1) is through described fastener (5), described nut (7) is spun on the double-screw bolt of described bolt (1), described fastener (5) is positioned between the bolt head and nut (7) of described bolt (1), described bolt axial force sensor (3) is arranged between described nut (7) and fastener (5), described bolt axial force sensor (3) is connected with described data acquisition unit (8), and described data acquisition unit (8) gathers the data from described bolt axial force sensor (3); Described data acquisition unit (8) is connected with described detection control unit (9), the data that described detection control unit (9) collects described data acquisition unit (8) are processed rear formation logic control signal, described detection control unit (9) is connected with described main control unit (10), described main control unit (10) receives the logic control signal from described detection control unit (9), and wind power generating set is carried out to safety operation.
3. a kind of wind power generating set bolt according to claim 2 connects clamping force monitoring system, it is characterized in that: described monitoring system also comprises pad three (6), described pad three (6) is arranged between described fastener (5) and described bolt axial force sensor (3), or between described nut (7) and described bolt axial force sensor (3).
4. a wind power generating set bolt connects clamping force monitoring system, it is characterized in that, comprising: bolt (1), bolt axial force sensor (3), fastener (5), nut (7), data acquisition unit (8), detection control unit (9) and main control unit (10); The double-screw bolt of described bolt (1) is through described fastener (5), described nut (7) is spun on the double-screw bolt of described bolt (1), described fastener (5) is positioned between the bolt head and nut (7) of described bolt (1), described bolt axial force sensor (3) is arranged between the bolt head and fastener (5) of described bolt (1), described bolt axial force sensor (3) is connected with described data acquisition unit (8), and described data acquisition unit (8) gathers the data from described bolt axial force sensor (3); Described data acquisition unit (8) is connected with described detection control unit (9), the data that described detection control unit (9) collects described data acquisition unit (8) are processed rear formation logic control signal, described detection control unit (9) is connected with described main control unit (10), described main control unit (10) receives the logic control signal from described detection control unit (9), and wind power generating set is carried out to safety operation.
5. according to a kind of wind power generating set bolt described in claim 1 or 4, connect clamping force monitoring system, it is characterized in that: described monitoring system also comprises pad one (2) and pad two (4), described pad one (2) is arranged between described bolt (1) and described bolt axial force sensor (3), and described pad two (4) is arranged between described bolt axial force sensor (3) and described fastener (5).
6. a kind of wind power generating set bolt according to claim 4 connects clamping force monitoring system, it is characterized in that: described monitoring system also comprises pad three (6), described pad three (6) is arranged between described fastener (5) and described nut (7).
7. according to a kind of wind power generating set bolt described in arbitrary claim in claim 1,2,3,4,6, connect clamping force monitoring system, it is characterized in that: described bolt axial force sensor (3) adopts wireless senser, described data acquisition unit (8) has wireless receiving module, between described bolt axial force sensor (3) and described data acquisition unit (8), by wireless mode, is connected.
8. a kind of wind power generating set bolt according to claim 7 connects clamping force monitoring system, it is characterized in that: described detection control unit (9) is connected with the programmable logic controller (PLC) of described main control unit (10).
9. according to a kind of wind power generating set bolt described in arbitrary claim in claim 1,2,3,4,6,8, connect clamping force monitoring system, it is characterized in that: described monitoring system comprises plural bolt (1), and the described bolt axial force sensor (3) corresponding with bolt (1) quantity and fastener (5), plural described bolt axial force sensor (3) is connected with described data acquisition unit (8) respectively.
10. a kind of wind power generating set bolt according to claim 9 connects clamping force monitoring system, it is characterized in that: described data acquisition unit (8) also comprises mobile storage interface and network connection port, described mobile storage interface is for the data storage of movable storage device, and described network connection port is for being connected to by network transmission and the storage that described data acquisition unit (8) carries out data.
11. according to claim 1, 2, 3, 4, 6, 8, a kind of wind power generating set bolt in 10 described in arbitrary claim connects clamping force monitoring system, it is characterized in that: the data that described detection control unit (9) collects described data acquisition unit (8) show online, described detection control unit (9) is also carried out minimum and maximum value setting to described bolt (1) stressed, if the stressed threshold range that exceeds of described bolt (1), described detection control unit (9) transmission warning or error signal are to described main control unit (10), by described main control unit (10), wind power generating set is carried out to corresponding operation.
CN201320589111.1U 2013-09-24 2013-09-24 Clamping force monitoring system for bolt connection of wind generating set Expired - Fee Related CN203515972U (en)

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CN107192482A (en) * 2017-06-21 2017-09-22 国家电网公司 Pump-storage generator closure stud load-bearing monitor device and method
CN108119480A (en) * 2017-06-30 2018-06-05 上海应谱科技有限公司 A kind of intelligent fastener and its monitoring system
WO2019071843A1 (en) * 2017-10-10 2019-04-18 东北大学 Rotary vibration test stand for fiber-reinforced composite disk-and-drum thin-wall member in bolt loosened condition
CN110660197A (en) * 2019-09-16 2020-01-07 国网新源水电有限公司富春江水力发电厂 Real-time alarm method and system for working condition of water turbine top cover bolt
CN110778464A (en) * 2019-11-15 2020-02-11 东方电气风电有限公司 Bolt online monitoring system and method for large wind generating set
CN112049761A (en) * 2020-09-14 2020-12-08 南京风电科技有限公司 Method and device for monitoring opening and closing degree of longitudinal flange of split tower of wind generating set

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614775A (en) * 2015-02-25 2015-05-13 云南酷联科技有限公司 Bolt looseness on-line monitoring device
CN104963928A (en) * 2015-07-22 2015-10-07 李圣用 System for reducing wind driven generator bolt scheduled maintenance frequency
CN107192482A (en) * 2017-06-21 2017-09-22 国家电网公司 Pump-storage generator closure stud load-bearing monitor device and method
CN108119480A (en) * 2017-06-30 2018-06-05 上海应谱科技有限公司 A kind of intelligent fastener and its monitoring system
WO2019071843A1 (en) * 2017-10-10 2019-04-18 东北大学 Rotary vibration test stand for fiber-reinforced composite disk-and-drum thin-wall member in bolt loosened condition
CN110660197A (en) * 2019-09-16 2020-01-07 国网新源水电有限公司富春江水力发电厂 Real-time alarm method and system for working condition of water turbine top cover bolt
CN110660197B (en) * 2019-09-16 2021-07-16 国网新源水电有限公司富春江水力发电厂 Real-time alarm method and system for working condition of water turbine top cover bolt
CN110778464A (en) * 2019-11-15 2020-02-11 东方电气风电有限公司 Bolt online monitoring system and method for large wind generating set
CN112049761A (en) * 2020-09-14 2020-12-08 南京风电科技有限公司 Method and device for monitoring opening and closing degree of longitudinal flange of split tower of wind generating set

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