CN207989375U - A kind of preventing fan from surging device - Google Patents
A kind of preventing fan from surging device Download PDFInfo
- Publication number
- CN207989375U CN207989375U CN201820396662.9U CN201820396662U CN207989375U CN 207989375 U CN207989375 U CN 207989375U CN 201820396662 U CN201820396662 U CN 201820396662U CN 207989375 U CN207989375 U CN 207989375U
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- plc controller
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- fan
- frequency converter
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- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model discloses a kind of preventing fan from surging devices, including PLC controller, the PLC controller is connect with a fan frequency converter, there are one wind turbines for the output end connection of the fan frequency converter, there are one vibrating sensors for installation on the spiral case of the wind turbine, the vibrating sensor is connect with PLC controller, the PLC controller includes PID arithmetic module, communication module, data memory module and output module, the communication module is connect with data memory module, data memory module is connect with PID arithmetic module, the output module is connect with fan frequency converter, the vibrating sensor is connect with communication module.The utility model is simple in structure, securely and reliably, is capable of the vibratory output of direct detection blower fan, to realize the control to wind turbine surge.
Description
Technical field
The utility model is related to fan safe precautionary technology, more particularly to a kind of wind turbine surge-preventing system.
Background technology
When surge occurs for wind turbine, the flow period of wind turbine repeatedly, and changes in very large range, shows as zero very
To there is negative value.This positive and negative violent fluctuation of compressor flow is that the fierce of air-flow occurs since gas flow fluctuations are very big
It hits, wind turbine itself is made to generate the noise increasing of high vibration while blower fan work.The high-head wind turbine of large capacity generates surge
When harm it is very big, the damage of equipment and bearing may be caused, caused the accident, the safe operation of equipment is directly affected.
The unstability of fan operation in order to prevent can usually take following measure：1, extra gas is diffused, in wind
Machine downstream line install additional automatic blow off valve valve air relief, when feed flow be less than or close to surge critical flow when, open vent valve, bleed off
Portion gas reduces pipeline pressure, and end is avoided to shake；2, reduce the air capacity into suction ventilator, air inlet setting it is electronic or
The aperture of manual modulation valve, valve requires to be adjusted according to downstream load.The above measure increases the operation program of control,
Fault point is increased, the energy consumption of equipment is increased, and changes the characteristic working curve of wind turbine, it may be to the use of rear end
Wind devices have a negative impact.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of preventing fan from surging devices, and the apparatus structure is simple,
Securely and reliably, it is capable of the vibratory output of direct detection blower fan, to realize the control to wind turbine surge.
To achieve the above object, the utility model provides technical solution below：A kind of preventing fan from surging device, including
PLC controller, the PLC controller are connect with a fan frequency converter, and there are one the output end connections of the fan frequency converter
Wind turbine, there are one vibrating sensors for installation on the spiral case of the wind turbine, and the vibrating sensor is connect with PLC controller, described
PLC controller includes PID arithmetic module, communication module, data memory module and output module, the communication module and data
Memory module connects, and data memory module is connect with PID arithmetic module, and the output module is connect with fan frequency converter, described
Vibrating sensor is connect with communication module.
Preferably, vibrating sensor is fixed on by nut bolt component on the spiral case of wind turbine.
Preferably, the output end of the feedback circuit of frequency converter and the communication module of PLC controller connect.
Preferably, the communication mould that the output end of the feedback circuit of frequency converter passes through MODEBUS communications protocol and PLC controller
Block connects.
Preferably, the communication module of PLC controller is also connect by Ethernet with an Industrial touch screen device.
Preferably, the output signal of vibrating sensor is the current signal of 4~20mA.
Preferably, the output module of PLC controller is also connected with there are one alarm.
Using above-mentioned technical proposal, the utility model compared with prior art, has the advantages that：1, structure letter
It is single, it is only necessary to which that the control to wind turbine surge can be realized in a sensor and a PLC controller；2, wind is only monitored on-line
The vibratory output of machine spiral case, detection parameters are few, are easy to judge the anti-life of surge, prevent from reporting by mistake；3. it is of low cost, it is easy to implement.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structure diagram of the PLC controller of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings, by the description of the embodiment, being described further to the utility model：
As shown in Figure 1, 2, a kind of preventing fan from surging device of the utility model, including PLC controller 1, PLC controller 1 with
One fan frequency converter 2 connects, and the output end connection of fan frequency converter 2 is equipped with one there are one wind turbine 3 on the spiral case of wind turbine 3
A vibrating sensor 4, vibrating sensor 4 are fixed on by nut bolt component on the spiral case of wind turbine 3, vibrating sensor 4 and PLC
Controller 1 connects, and the output signal of vibrating sensor 4 is the current signal of 4~20mA, and PLC controller 1 includes PID arithmetic mould
Block, communication module, data memory module and output module, the communication module are connect with data memory module, data storage
Module is connect with PID arithmetic module, and the output module is connect with fan frequency conversion 2, and vibrating sensor 4 is connect with communication module,
The output end of the feedback circuit of frequency converter 2 is connect by MODEBUS communications protocol with the communication module of PLC controller 1, PLC controls
The communication module of device 1 processed is also connect by Ethernet with an Industrial touch screen device 5, and Industrial touch screen device 5 is as PLC controller 1
Input hardware equipment, the output module of PLC controller 1 are also connected with that there are one alarms.
When the utility model is used, first by Industrial touch screen device 5, to PLC controller 1 input an alarming value and
One shutdown value, at work, vibratory output is continuously converted into current signal and is sent to PLC wind turbine 3 by vibrating sensor 4
In controller 1, PLC controller 1 calculates current signal by pid algorithm, when input signal exceeds alarming value, PLC
The output module control alarm of controller 1 sends out alarm, and hereafter, PLC controller 1 continues to judge input signal, when input is believed
Number exceed shutdown value when, then PLC controller 1 control wind turbine 3 shut down.
The utility model compared with prior art, has the advantages that：1, simple in structure, it is only necessary to a sensor
And the control to wind turbine surge can be realized in a PLC controller；2, the vibratory output of volute of blower, detection are only monitored on-line
Parameter is few, is easy to judge the anti-life of surge, prevents from reporting by mistake；3. it is of low cost, it is easy to implement.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (7)
1. a kind of preventing fan from surging device, including PLC controller (1), it is characterised in that：The PLC controller (1) and a wind
Machine frequency converter (2) connects, and there are one wind turbine (3), the spiral cases of the wind turbine (3) for the output end connection of the fan frequency converter (2)
There are one vibrating sensor (4), the vibrating sensors (4) to be connect with PLC controller (1) for upper installation, the PLC controller
(1) include PID arithmetic module, communication module, data memory module and output module, the communication module and data store mould
Block connects, and data memory module is connect with PID arithmetic module, and the output module is connect with fan frequency converter (2), the vibration
Sensor (4) is connect with communication module.
2. preventing fan from surging device according to claim 1, it is characterised in that：The vibrating sensor (4) passes through nut
Bolt assembly is fixed on the spiral case of wind turbine (3).
3. preventing fan from surging device according to claim 2, it is characterised in that：The feedback circuit of the frequency converter (2)
Output end is connect with the communication module of PLC controller (1).
4. preventing fan from surging device according to claim 3, it is characterised in that：The feedback circuit of the frequency converter (2)
Output end is connect by MODEBUS communications protocol with the communication module of PLC controller (1).
5. preventing fan from surging device according to claim 4, it is characterised in that：The communication module of the PLC controller (1)
Also it is connect with an Industrial touch screen device (5) by Ethernet.
6. preventing fan from surging device according to claim 1, it is characterised in that：The output of the vibrating sensor (4) is believed
Number be 4~20mA current signal.
7. preventing fan from surging device according to claim 6, it is characterised in that：The output module of the PLC controller (1)
Alarm there are one being also connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820396662.9U CN207989375U (en) | 2018-03-23 | 2018-03-23 | A kind of preventing fan from surging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820396662.9U CN207989375U (en) | 2018-03-23 | 2018-03-23 | A kind of preventing fan from surging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989375U true CN207989375U (en) | 2018-10-19 |
Family
ID=63828846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820396662.9U Expired - Fee Related CN207989375U (en) | 2018-03-23 | 2018-03-23 | A kind of preventing fan from surging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989375U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075749A (en) * | 2019-12-27 | 2020-04-28 | 湖南泛航智能装备有限公司 | Intelligent anti-surge device of ultrahigh-speed centrifugal fan |
| CN111120360A (en) * | 2019-12-22 | 2020-05-08 | 云南瑞斯德机械有限公司 | Structure and method for reducing surge phenomenon of centrifugal compressor and automatically adjusting flow |
| CN115467851A (en) * | 2022-09-21 | 2022-12-13 | 烟台东德实业有限公司 | Method for monitoring and preventing surge of air compressor |
-
2018
- 2018-03-23 CN CN201820396662.9U patent/CN207989375U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120360A (en) * | 2019-12-22 | 2020-05-08 | 云南瑞斯德机械有限公司 | Structure and method for reducing surge phenomenon of centrifugal compressor and automatically adjusting flow |
| CN111075749A (en) * | 2019-12-27 | 2020-04-28 | 湖南泛航智能装备有限公司 | Intelligent anti-surge device of ultrahigh-speed centrifugal fan |
| CN115467851A (en) * | 2022-09-21 | 2022-12-13 | 烟台东德实业有限公司 | Method for monitoring and preventing surge of air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 |