CN208416813U - A kind of blower blade root bolt fracture monitoring device - Google Patents

A kind of blower blade root bolt fracture monitoring device Download PDF

Info

Publication number
CN208416813U
CN208416813U CN201820897008.6U CN201820897008U CN208416813U CN 208416813 U CN208416813 U CN 208416813U CN 201820897008 U CN201820897008 U CN 201820897008U CN 208416813 U CN208416813 U CN 208416813U
Authority
CN
China
Prior art keywords
blade root
sensor
approach switch
blower
root bolt
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
Application number
CN201820897008.6U
Other languages
Chinese (zh)
Inventor
彭国勋
高文飞
张志坤
李政文
梁善伦
郭涛
王建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MingYang Smart Energy Group Co Ltd
Original Assignee
MingYang Smart Energy Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MingYang Smart Energy Group Co Ltd filed Critical MingYang Smart Energy Group Co Ltd
Priority to CN201820897008.6U priority Critical patent/CN208416813U/en
Application granted granted Critical
Publication of CN208416813U publication Critical patent/CN208416813U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of blower blade root bolt fracture monitoring devices, it include approach switch sensor and sensor support, wherein, the sensor support is mounted on the wheel hub web of blower by screw, the approach switch sensor is mounted in sensor support, it is fixed together with wheel hub web, and close to corresponding blade root bolt, it is recorded for monitoring the nut installed at the top of blade root bolt and generating on-off model and be transmitted to the master control system of blower, it is every when variable pitch to pass through a nut, the approach switch sensor can all generate an on-off model, the master control system is according to the signal number received to determine whether there is blade root bolt to be broken.Every blade need to only install an approach switch sensor, at low cost compared with strain measurement scheme, be easily installed and reliably, and service life is long.

Description

A kind of blower blade root bolt fracture monitoring device
Technical field
The utility model relates to the technical fields of blower blade root bolt fracture monitoring, refer in particular to a kind of blower blade root bolt Break monitoring device.
Background technique
Known in the industry, blower blade root bolt refers to the connection bolt of connection pitch variable bearings and blade, as shown in Figure 1, for figure In 01, since tired nargin is minimum in entire blower for bolt herein, if site operation is lack of standardization, bolt easily occurs herein Fracture.Once and the bolt fracture failure, cannot such as find in time, long time running, break bolt nearby will appear sprawling and become Gesture.Under larger load working condition, it may appear that blade such as falls at the serious accidents.Blade is connected by blade root bolt and pitch variable bearings 02 It connects, pitch variable bearings 02 are connect by bolt with wheel hub, connect bolt two parts bolt by blade root bolt, pitch variable bearings and wheel hub The load of blade is born, if blade root bolt or pitch variable bearings connect bolt with wheel hub and are broken, remaining bolt is not enough to hold By the load from blade, blade will fall, and cause serious accident.
Currently, routine monitoring is to paste foil gauge on bolt, whether it is broken by the deformation monitoring bolt of foil gauge, but this Kind scheme higher cost, construction are complicated;Foil gauge is easy to fall off, and reliability is not high;And the general service life of foil gauge is shorter.Leaf The distribution of piece bolt fatigue is regular, is fixing in 90 degree of regions, and fatigue damage is maximum, therefore how accurately to detect this part bolt It is particularly significant.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, propose a kind of blower blade root spiral shell of high reliablity Bolt break monitoring device can complete to real-time and precise the monitoring of the fracture to blower blade root bolt.
To achieve the above object, a kind of technical solution provided by the utility model are as follows: blower blade root bolt fracture monitoring Device includes approach switch sensor and sensor support, wherein the sensor support is mounted on blower by screw On wheel hub web, the approach switch sensor is mounted in sensor support, is fixed together with wheel hub web, and close to phase The blade root bolt answered, for monitoring the nut installed at the top of blade root bolt and generating the master control system that on-off model is transmitted to blower System is recorded, and when variable pitch is every to pass through a nut, and the approach switch sensor can all generate an on-off model, described Master control system is according to the signal number received to determine whether there is blade root bolt to be broken.
The sensor support is the support of L shape, and is equipped with stiffening plate, the stiffening plate in the right angle of L shape support Upper aperture is for the fixed cable come out from approach switch sensor, and the L shape support is provided with screw hole on one side, for fixing On wheel hub web, another side is provided with the mounting hole for installing approach switch sensor.
The utility model compared with prior art, have the following advantages that with the utility model has the advantages that
1, nut is monitored using approach switch sensor, since the quantity of 90 ° of range inner nuts is fixed, blade variable pitch At 0 ° to 90 °, master control system can receive corresponding pulse number, i.e. the signal number that sends over of approach switch sensor. If exporting a pulse less, then a bolt fracture is proved;Two pulses are exported less, then prove 2 bolt fractures;If paddle 90 ° of leaf variable pitch export without signal, then may determine that sensor degradation.
2, every blade need to only install an approach switch sensor, at low cost compared with strain measurement scheme, be easy to It installs and reliable, service life is long.
Detailed description of the invention
Fig. 1 is the structure chart of draught fan impeller part.
Fig. 2 is the scheme of installation of utility model device.
Fig. 3 is the structural schematic diagram of utility model device.
Fig. 4 is the structural schematic diagram of sensor support.
Specific embodiment
The utility model is described in further detail combined with specific embodiments below.
Referring to fig. 2 to shown in Fig. 4, blower blade root bolt fracture monitoring device provided by the present embodiment, includes close Switch sensor 1 and sensor support 2, wherein the sensor support 2 is mounted on the wheel hub web 3 of blower by screw, The sensor support 2 is the support of L shape, and is welded with stiffening plate 4, aperture in the stiffening plate 4 in the right angle of L shape support 41 for the fixed cable come out from approach switch sensor 1, and the L shape support opens that there are two screw holes 21 on one side, is used for It is fixed on wheel hub web 3, another side is provided with the mounting hole 22 for installing approach switch sensor 1, described close to switch Sensor 1 is mounted at the mounting hole 22 of sensor support 2, is fixed together with wheel hub web 3, and close to corresponding blade root spiral shell Bolt 5, for monitor the nut 6 installed at the top of blade root bolt 5 and generate on-off model be transmitted to blower master control system carry out Record.
When variable pitch, nut 6 is rotated relative to wheel hub web 3 with certain speed, and approach switch sensor 1 passes through sensing Device support 2 is fixed together with wheel hub web 3, when nut 6 is by approach switch sensor 1, nut 6 and close to switch sensing Device 1 has a nearest distance, adjusting nut 6 and 1 minimum distance of approach switch sensor in the range of approach switch sensor 1 In range, when such a nut 6 is by approach switch sensor 1, approach switch sensor 1 can export a switching value letter Number, signal can first access the pitch-controlled system of blower, then pass to master control system or signal by communication modes and directly pass through firmly The mode of connection accesses master control system, master control system by signal processing (as soon as when by blade root bolt, have a pulse letter Number record), to realize the monitoring to blade bolt.Due to the quantity of 90 ° of range inner nuts 6 be it is fixed, 0 ° of blade variable pitch is extremely At 90 °, master control system can receive corresponding pulse number, i.e. the signal number that sends over of approach switch sensor 1, if A pulse is exported less, then proves a bolt fracture;Two pulses are exported less, then two bolt fractures are proved, if blade 90 ° of variable pitch export without signal, then may determine that approach switch sensor 1 damages.
The examples of implementation of the above are only the preferred embodiment of the utility model, not limit the utility model with this Practical range, therefore all shapes according to the utility model, change made by principle, it should all cover in the protection scope of the utility model It is interior.

Claims (2)

1. a kind of blower blade root bolt fracture monitoring device, it is characterised in that: include approach switch sensor and sensor branch Support, wherein the sensor support is mounted on the wheel hub web of blower by screw, and the approach switch sensor is mounted on It in sensor support, is fixed together with wheel hub web, and close to corresponding blade root bolt, for monitoring peace at the top of blade root bolt The nut of dress simultaneously generates on-off model and is transmitted to the master control system of blower and recorded, and when variable pitch is every to pass through a nut, institute An on-off model can be generated by stating approach switch sensor all, and the master control system judges according to the signal number received Whether there is blade root bolt to be broken.
2. a kind of blower blade root bolt fracture monitoring device according to claim 1, it is characterised in that: the sensor branch Support is that L shape supports, and is equipped with stiffening plate in the right angle of L shape support, and aperture is for fixed from close in the stiffening plate The cable that switch sensor comes out, the L shape support is provided with screw hole on one side, another for being fixed on wheel hub web While being provided with the mounting hole for installing approach switch sensor.
CN201820897008.6U 2018-06-11 2018-06-11 A kind of blower blade root bolt fracture monitoring device Active CN208416813U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820897008.6U CN208416813U (en) 2018-06-11 2018-06-11 A kind of blower blade root bolt fracture monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820897008.6U CN208416813U (en) 2018-06-11 2018-06-11 A kind of blower blade root bolt fracture monitoring device

Publications (1)

Publication Number Publication Date
CN208416813U true CN208416813U (en) 2019-01-22

Family

ID=65110664

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820897008.6U Active CN208416813U (en) 2018-06-11 2018-06-11 A kind of blower blade root bolt fracture monitoring device

Country Status (1)

Country Link
CN (1) CN208416813U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111894816A (en) * 2020-08-03 2020-11-06 远景能源有限公司 Bolt monitoring system and method for wind generating set
CN112648151A (en) * 2020-12-14 2021-04-13 陕西中科启航科技有限公司 Method for monitoring fracture of blade root bolt of wind generating set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111894816A (en) * 2020-08-03 2020-11-06 远景能源有限公司 Bolt monitoring system and method for wind generating set
CN112648151A (en) * 2020-12-14 2021-04-13 陕西中科启航科技有限公司 Method for monitoring fracture of blade root bolt of wind generating set

Similar Documents

Publication Publication Date Title
CN208416813U (en) A kind of blower blade root bolt fracture monitoring device
CN102980651A (en) Monitoring method and monitoring device and monitoring system of wind turbine generator condition
CN107829884B (en) A kind of wind-driven generator tower health status monitoring method and dedicated test system
CN103411659B (en) Wind driven generator blade and method and system for monitoring tower barrel states
CN102620807A (en) System and method for monitoring state of wind generator
CA2440875A1 (en) Monitoring the load of a wind energy plant
CN108709724B (en) Online bolt state monitoring system and method for wind generating set
CN108590984B (en) Method and device for monitoring blade load of wind generating set
CN105332862B (en) For detecting the methods, devices and systems of wind power generating set working condition
US8102067B2 (en) Method for the operation of a wind energy plant having a wind velocity measurement device
CN106644448B (en) Tower bolt forecasting fatigue method and forecasting system
CN202789321U (en) Wind turbine capable of detecting cracks of main shaft
CN106194602B (en) A kind of wireless acoustic emission detection system of Wind turbines
CN207454184U (en) A kind of blower fan group tower inclinometric system
CN207395790U (en) The prefabricated active well of on-line monitoring
CN206311237U (en) A kind of temperature of oil in transformer detection means
CN204666151U (en) A kind of wind turbine tower pick-up unit
CN202350915U (en) Vibration transmitter
US9816485B2 (en) Shock sensor for wind turbine generator
CN207111315U (en) Blade for wind power generating set sweeps tower early warning system and wind power generating set
CN202938807U (en) Online wind deflection angle monitoring system for smart grid transmission lines
CN111894816B (en) Bolt monitoring system and method for wind generating set
CN209858468U (en) Device for detecting fracture of conductive fastener
CN213239020U (en) Transmission line breeze vibration sensing device and early warning device
CN210015040U (en) Gas oxygen content analysis device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant