CN212435344U - Fan hub on-line monitoring protection system - Google Patents
Fan hub on-line monitoring protection system Download PDFInfo
- Publication number
- CN212435344U CN212435344U CN202021187853.8U CN202021187853U CN212435344U CN 212435344 U CN212435344 U CN 212435344U CN 202021187853 U CN202021187853 U CN 202021187853U CN 212435344 U CN212435344 U CN 212435344U
- Authority
- CN
- China
- Prior art keywords
- measuring unit
- fan
- unit
- rotating speed
- current
- 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
Links
Images
Landscapes
- Wind Motors (AREA)
Abstract
The utility model provides a fan wheel hub on-line monitoring protection system, include: the wind driven generator comprises a voltage measuring unit, a current measuring unit and a fan rotating speed measuring unit, wherein the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit are all arranged in a hub of the wind driven generator and rotate along with an impeller; the control unit is electrically connected with the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit and is used for disconnecting the safety chain of the wind driven generator for protection when the abnormality is judged according to the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit; and the area centralized control center is connected with the control unit and is used for receiving and displaying the data from the control unit. The signal transmission is directly completed in the impeller, the false alarm caused by the signal transmission is avoided, the overspeed accident of the rotary machine can be effectively controlled, the system carries out online monitoring and protection on the key safety parameters of the fan in the regional centralized control center, and the safety factor and the automation degree of the fan are greatly improved.
Description
Technical Field
The utility model relates to a wind-powered electricity generation field, in particular to fan wheel hub on-line monitoring protection system.
Background
Modern rotating machinery requires more and more occasions with high precision, large load and high rotating speed, the corresponding impeller rotation degree must be controlled within a certain range, otherwise gear box damage, motor ignition and even tower collapse are easily caused; when the capacity of the variable-pitch battery is directly related to the emergency situation of the fan, the battery can provide enough electric quantity to drive the variable-pitch motor to take up the pitch and stop the fan. The rotating speed and the battery capacity are the most important protection links for the safety of the wind driven generator, so the important point of fan protection is provided, but in the prior art, the rotating speed of the fan is judged by a PLC (programmable logic controller) of a cabin, the rotating speed is measured by an encoder, and then a command signal is sent to a variable pitch motor through a slip ring to carry out pitch taking, wherein the slip ring is a vulnerable part, so the failure rate is high; the online monitoring of the electric quantity of the storage battery is still blank at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fan wheel hub on-line monitoring protection system to solve at least one above-mentioned technical problem.
In order to solve the above problem, as an aspect of the utility model provides a fan wheel hub on-line monitoring protection system, include: the voltage measuring unit is used for measuring the total voltage of the battery pack and the voltage of each battery in the battery pack; the current measuring unit is used for measuring the total current of the battery pack and the current of each battery in the battery pack; the fan rotating speed measuring unit is used for detecting the rotating speed of an impeller of the fan; the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit are all arranged in a hub of the wind driven generator and rotate along with the impeller; the control unit is electrically connected with the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit and is used for disconnecting the safety chain of the wind driven generator for protection when the abnormality is judged according to the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit; and the regional centralized control center is connected with the control unit and used for receiving and displaying the data from the control unit.
Preferably, the control unit is connected with the voltage measuring unit, the current measuring unit, the fan rotating speed measuring unit and the regional centralized control center through RS485 buses.
Preferably, the fan rotating speed measuring unit comprises a gyroscope, the current measuring unit adopts a current transformer or a series power supply circuit, and the control unit adopts a PLC or a single chip microcomputer.
Preferably, the control unit is in communication connection with the regional centralized control center in a wireless mode.
Preferably, the online monitoring and protecting system for the fan hub further comprises an internal resistance detecting unit or a super capacitor detecting unit electrically connected with the control unit.
Preferably, the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit are electrically connected with the control unit through an AD conversion unit respectively.
Preferably, the regional centralized control center includes:
the fan safety monitoring workstation is used for safety monitoring processing and displaying; the big data platform is used for classifying and storing the acquired data; and the safety analysis application device is used for carrying out fault early warning according to the data on the big data platform.
Preferably, the fan safety monitoring workstation is in communication connection with the big data platform through a one-way isolator.
The utility model has the advantages that: through above mode, signal transmission directly accomplishes in the impeller, need not advance the master control room, need not pass through the sliding ring, has avoided the wrong report that signal transmission caused, can make rotary machine's overspeed accident obtain effective control, and this system carries out on-line monitoring and protection at regional centralized control center to the key safety parameter of fan, has promoted the factor of safety and the degree of automation of fan greatly.
Drawings
Fig. 1 schematically shows a schematic structural diagram of the present invention.
Reference numbers in the figures: 1. a battery pack; 2. a fan rotating speed measuring unit; 3. a battery; 4. a control unit; 5. a regional centralized control center; 6. an AD conversion unit; 7. a safety chain.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The utility model discloses an aspect provides a fan wheel hub on-line monitoring protection system for realize impeller rotational speed monitoring, become oar battery power monitoring function, to the function of the automatic shutdown protection that produces when rotational speed or battery capacity are unusual.
Fan wheel hub on-line monitoring protection system includes: a voltage measuring unit for measuring the total voltage of the battery pack and the voltage of each battery 3 in the battery pack 1; a current measuring unit for measuring the total current of the battery pack and the current of each battery 3 in the battery pack 1; the fan rotating speed measuring unit 2 is used for detecting the rotating speed of an impeller of the fan; the control unit 4 is electrically connected with the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit 2 and is used for disconnecting the safety chain 7 of the wind driven generator for protection when the abnormality is judged according to the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit 2; and the regional centralized control center 5 is connected with the control unit 4 and is used for receiving and displaying data from the control unit 4. The voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit 2 are all arranged in a hub of the wind driven generator and rotate together with the impeller;
preferably, the regional centralized control center 5 comprises: the fan safety monitoring workstation is used for safety monitoring processing and displaying; the big data platform is used for classifying and storing the acquired data; and the safety analysis application device is used for carrying out fault early warning according to the data on the big data platform. Preferably, the fan safety monitoring workstation is in communication connection with the big data platform through a one-way isolator.
Preferably, the control unit 4 is connected with the voltage measuring unit, the current measuring unit, the fan rotating speed measuring unit 2 and the regional centralized control center 5 through RS485 buses respectively. In another embodiment, the control unit 4 and the centralized regional control center 5 are preferably in communication connection in a wireless manner (e.g., WIFI, 4G, or the like).
Preferably, the fan rotation speed measuring unit 2 comprises a gyroscope, the current measuring unit adopts a current transformer or a series power supply circuit, and the control unit 4 adopts a PLC or a single chip microcomputer. Preferably, the online monitoring and protecting system for the fan hub further comprises an internal resistance detecting unit or a super capacitor detecting unit electrically connected with the control unit 4.
Preferably, the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit 2 are electrically connected with the control unit 4 through an AD conversion unit 6 respectively.
The utility model provides a fan wheel hub on-line monitoring protection system connects through 485 signal lines between each unit, adopts the gyroscope to test the speed, judges through the PLC logic whether the signal is normal. The voltage measuring unit can measure the total voltage of the battery pack 1 and can also reflect the battery parameters by measuring the voltage of each battery. The current measuring unit measures the current of the storage battery in a mode of a current transformer or a series power supply circuit. The control unit 4 is used for detection, logical operation and control, but the control form is not limited to PLC, and may adopt a single chip microcomputer. And the control unit 4 stops the fan by disconnecting the fan safety chain when the rotating speed or the residual electricity storage capacity parameter of the storage battery is abnormal, so that the protection function is completed. Preferably, the battery monitoring can be simultaneously added with an internal resistance or super-capacitor monitoring function. In one scheme, can increase AD conversion module at the monitoring unit, in another preferred technical scheme, the utility model discloses also can increase AD conversion module at the PLC end, convert the analog quantity of voltage, electric current into the digital quantity.
The system comprises a bus RTU, a fan safety monitoring workstation, a big data platform, a safety analysis application unit, a safety chain and a one-way isolator, wherein the bus RTU is used for realizing signal transmission, the I-zone centralized control is an original data acquisition system of a fan, the fan safety monitoring workstation is a safety monitoring processing and display terminal of a wind field, the big data platform is a unit for classifying and storing all acquired signals, the safety analysis application unit is a unit for calculating and analyzing data on the big data platform and generating fault early warning, the safety chain is a safety loop of the fan, and the one-way isolator is a unit for ensuring information transmission safety.
In one embodiment, signals detected by the two gyroscopes are transmitted to the control unit 4, the control unit 4 performs logic judgment, and when the signals are abnormal, the relay is disconnected to disconnect the safety chain of the wind driven generator to perform protection actions, and meanwhile, information is transmitted to the regional centralized control center 5 through another 485 signal line to assist operation and maintenance personnel in operation and maintenance judgment. The system carries out on-line monitoring and protection on key safety parameters of the fan, and the safety factor and the automation degree of the fan are greatly improved.
When the wind driven generator works, the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit 2 are arranged in a hub of the wind driven generator and rotate along with the impeller after being connected through signal lines. The battery current, voltage and internal resistance parameters monitored by the voltage measuring unit and the current measuring unit and the rotating speed of the impeller detected by the gyroscope are simultaneously transmitted to the control unit 4, the control unit 4 analyzes and judges data according to a known mode in the prior art, and if the parameters exceed a set normal value range, the control unit 4 sends a control instruction to the relay, so that a safety chain is disconnected, the variable pitch action for overspeed protection of the fan is executed, and simultaneously the data are uniformly uploaded to the regional centralized control center 5 to assist operation and maintenance personnel to perform early warning judgment. The safety chain is a safety loop of the fan, and the one-way isolator is a unit for guaranteeing information transmission safety. Thus, a set of complete key data monitoring, early warning and measuring protection system is formed.
The utility model has the advantages that: through above mode, signal transmission directly accomplishes in the impeller, need not advance the master control room, need not pass through the sliding ring, has avoided the wrong report that signal transmission caused, can make rotary machine's overspeed accident obtain effective control, and this system carries out on-line monitoring and protection at regional centralized control center 5 to the key safety parameter of fan, has promoted the factor of safety and the degree of automation of fan greatly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fan wheel hub on-line monitoring protection system which characterized in that includes:
the voltage measuring unit is used for measuring the total voltage of the battery pack and the voltage of each battery (3) in the battery pack (1);
the current measuring unit is used for measuring the total current of the battery pack and the current of each battery (3) in the battery pack (1);
the fan rotating speed measuring unit (2) is used for detecting the rotating speed of an impeller of the fan; the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit (2) are all arranged in a hub of the wind driven generator and rotate along with the impeller;
the control unit (4) is electrically connected with the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit (2) and is used for disconnecting a safety chain (7) of the wind driven generator for protection when the abnormality is judged according to the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit (2);
and the regional centralized control center (5) is connected with the control unit (4) and is used for receiving and displaying data from the control unit (4).
2. The fan hub online monitoring and protecting system according to claim 1, wherein the control unit (4), the voltage measuring unit, the current measuring unit, the fan rotating speed measuring unit (2) and the regional centralized control center (5) are connected through RS485 buses respectively.
3. The fan hub online monitoring and protecting system according to claim 1, wherein the fan rotation speed measuring unit (2) comprises a gyroscope, the current measuring unit adopts a current transformer or a series power supply circuit, and the control unit (4) adopts a PLC or a single chip microcomputer.
4. The fan hub online monitoring and protecting system according to claim 1, wherein the control unit (4) is in communication connection with the regional centralized control center (5) in a wireless manner.
5. The online monitoring and protecting system for the hub of the wind turbine as claimed in claim 1, further comprising an internal resistance detecting unit or a super capacitor detecting unit electrically connected with the control unit (4).
6. The fan hub online monitoring and protecting system according to claim 1, wherein the voltage measuring unit, the current measuring unit and the fan rotating speed measuring unit (2) are electrically connected with the control unit (4) through an AD conversion unit (6) respectively.
7. The fan hub on-line monitoring and protecting system according to claim 1, wherein the regional centralized control center (5) comprises:
the fan safety monitoring workstation is used for safety monitoring processing and displaying;
the big data platform is used for classifying and storing the acquired data;
and the safety analysis application device is used for carrying out fault early warning according to the data on the big data platform.
8. The fan hub on-line monitoring protection system of claim 7, wherein the fan safety monitoring workstation is in communication connection with the big data platform through a one-way isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187853.8U CN212435344U (en) | 2020-06-23 | 2020-06-23 | Fan hub on-line monitoring protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187853.8U CN212435344U (en) | 2020-06-23 | 2020-06-23 | Fan hub on-line monitoring protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212435344U true CN212435344U (en) | 2021-01-29 |
Family
ID=74281875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021187853.8U Active CN212435344U (en) | 2020-06-23 | 2020-06-23 | Fan hub on-line monitoring protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212435344U (en) |
-
2020
- 2020-06-23 CN CN202021187853.8U patent/CN212435344U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104019000B (en) | The loading spectrum of wind power generating set is determined and perspective maintenance system | |
| CN102022266B (en) | Systems, methods, and apparatus for monitoring and controlling a wind driven machine | |
| CN103472406A (en) | Wind turbine generator unit pitch system standby power supply online automatic detection method and device | |
| CN103343728A (en) | Wind generating set remote on-line multi-mode health state monitoring and fault diagnosis system | |
| CN105569931B (en) | A kind of driving chain of wind driven generator method for diagnosing faults | |
| CN108548567A (en) | A kind of transmission line online monitoring system with temperature monitoring | |
| CN106438432A (en) | Fan alarm system | |
| CN111911363A (en) | Fault snapshot system of direct-current variable pitch system of wind turbine generator and monitoring method thereof | |
| CN111287912B (en) | Fault diagnosis method for variable pitch system of wind driven generator | |
| CN108590985A (en) | A kind of wind generating set pitch control system accumulator property automatic testing method | |
| CN210977751U (en) | Overspeed module device for improving reliability of variable pitch | |
| CN108779760A (en) | wind power plant | |
| CN212435344U (en) | Fan hub on-line monitoring protection system | |
| CN211174438U (en) | Power station generating set diagnostic device | |
| CN206126536U (en) | Hoist safety monitoring system of wireless solar energy power supply | |
| CN201882595U (en) | Integrated protection alarming device of belt conveyor | |
| CN206114805U (en) | Fan becomes oar driver automatic test system | |
| CN203903711U (en) | A security monitoring and control device for an automobile-dedicated lifter | |
| CN211623621U (en) | Device for preventing unplanned shutdown of wind turbine generator in predicted maintenance period | |
| CN205910321U (en) | Motor on -line monitoring system | |
| CN114060232A (en) | Method for monitoring power generation state of wind generating set | |
| CN208689743U (en) | Wireless transmission type vibration and temperature detection device | |
| CN110630436A (en) | Over-standard control device for tile vibration transverse vibration acceleration in engine room of wind turbine generator and logic design method | |
| CN208934857U (en) | A kind of lightning protection on-line measuring device on wind-driven generator | |
| CN216866920U (en) | Abnormal data monitoring system for wind generating set and wind power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |