CN208416813U - A kind of blower blade root bolt fracture monitoring device - Google Patents
A kind of blower blade root bolt fracture monitoring device Download PDFInfo
- 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
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- China
- Prior art keywords
- blade root
- sensor
- approach switch
- root bolt
- blower
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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
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.
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 |
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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 |
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| CN (1) | CN208416813U (en) |
Cited By (3)
| 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 |
| CN116591907A (en) * | 2023-04-06 | 2023-08-15 | 中广核新能源安徽有限公司 | Wind driven generator variable pitch bearing and connecting bolt state monitoring method and system |
-
2018
- 2018-06-11 CN CN201820897008.6U patent/CN208416813U/en active Active
Cited By (4)
| 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 |
| CN116591907A (en) * | 2023-04-06 | 2023-08-15 | 中广核新能源安徽有限公司 | Wind driven generator variable pitch bearing and connecting bolt state monitoring method and system |
| CN116591907B (en) * | 2023-04-06 | 2024-05-14 | 中广核新能源安徽有限公司 | Wind driven generator variable pitch bearing and connecting bolt state monitoring method and system |
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