CN114688065A - Quiet leaf angle control system of axial fan - Google Patents
Quiet leaf angle control system of axial fan Download PDFInfo
- Publication number
- CN114688065A CN114688065A CN202210135765.0A CN202210135765A CN114688065A CN 114688065 A CN114688065 A CN 114688065A CN 202210135765 A CN202210135765 A CN 202210135765A CN 114688065 A CN114688065 A CN 114688065A
- Authority
- CN
- China
- Prior art keywords
- electro
- controller
- hydraulic
- valve
- servo valve
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
Abstract
The invention discloses an axial flow fan stationary blade angle control system, which is applied to the technical field of metallurgy and chemical engineering safety monitoring. The axial fan stator blade angle control system comprises: the system comprises a displacement sensing unit, a master servo controller, a slave servo controller and a hydraulic protection device; the hydraulic protection device comprises a first electro-hydraulic servo valve and a second electro-hydraulic servo valve; the displacement sensing unit is respectively connected with the host servo controller and the slave servo controller; the master servo controller is also respectively connected with the slave servo controller and the first electro-hydraulic servo valve; the slave servo controller is also connected with the second electro-hydraulic servo valve. The invention realizes the uninterrupted servo tracking control of the angle of the static blade of the axial flow fan by arranging the double-machine servo controller, solves the hidden trouble that a certain part can be stopped at any time when a problem occurs in the existing single-machine control scheme, and meets the requirement of uninterrupted production of a user.
Description
Technical Field
The invention relates to the technical field of metallurgy and chemical engineering safety monitoring, in particular to a static blade angle control system of an axial flow fan.
Background
At present, the angle control system of the stationary blade of the axial flow fan in steel and petrochemical enterprises is a single-machine control system, and realizes the control of position and angle through a single-way displacement transmitter, a servo controller and an electro-hydraulic servo valve. When a certain part of the servo control system breaks down, the stator blade can be opened fully, closed fully or locked, the potential safety hazard of stopping at any time exists, the factory cannot operate normally, and further great economic loss is caused to enterprises.
Disclosure of Invention
The invention aims to provide an axial flow fan stator blade angle control system, which realizes the uninterrupted servo tracking control of the axial flow fan stator blade angle, solves the hidden trouble that a certain part can be stopped at any time when a problem occurs in the existing single-machine control scheme, and meets the requirement of uninterrupted production of a user.
In order to achieve the purpose, the invention provides the following scheme:
an axial fan stationary blade angle control system comprising: the system comprises a displacement sensing unit, a master servo controller, a slave servo controller and a hydraulic protection device; the hydraulic protection device comprises a first electro-hydraulic servo valve and a second electro-hydraulic servo valve;
the displacement sensing unit is respectively connected with the host servo controller and the slave servo controller; the master servo controller is also respectively connected with the slave servo controller and the first electro-hydraulic servo valve; the slave servo controller is also connected with the second electro-hydraulic servo valve;
the displacement sensing unit is used for acquiring an angle position signal of the stationary blade of the axial flow fan;
the host servo controller is configured to:
detecting a first working state of the first electro-hydraulic servo valve;
generating a first driving signal according to the angle position signal and the received target command signal;
the slave servo controller is configured to:
detecting a second working state of the host servo controller;
judging whether the first electro-hydraulic servo valve has a fault according to the received first working state;
judging whether the host servo controller fails according to the second working state;
when any one of the host servo controller and the first electro-hydraulic servo valve has a fault, generating a second driving signal according to the angle position signal and the received target command signal;
the first electro-hydraulic servo valve is used for controlling the direction and the size of a valve port according to the first driving signal when the main machine servo controller and the first electro-hydraulic servo valve are not in fault, so as to control power oil to output hydraulic pressure and further drive the stationary blade of the axial flow fan to rotate;
and the second electro-hydraulic servo valve is used for controlling the direction and the size of a valve port according to the second driving signal when any one of the host servo controller and the first electro-hydraulic servo valve fails so as to control power oil to output hydraulic pressure and further drive the stationary blade of the axial flow fan to rotate.
Optionally, the displacement sensing unit comprises one or more position sensors; the position sensor is arranged on the fixed blade of the axial flow fan; and the position sensor is respectively connected with the master servo controller and the slave servo controller.
Optionally, when the displacement sensing unit is a plurality of position sensors, the host servo controller is further configured to compare the plurality of angle position signals, and determine whether a faulty position sensor exists in the plurality of position sensors according to a comparison result; and the slave servo controller is also used for receiving a plurality of angle position signals when the master servo controller fails, comparing the angle position signals and determining whether a failed position sensor exists in the position sensors according to the comparison result.
Optionally, the host servo controller includes a first input module, a first core controller, and a first output module;
the first input module is respectively connected with the displacement sensing unit and the first core controller; the first core controller is respectively connected with the first input module, the first electro-hydraulic servo valve and the first output module; the first output module is respectively connected with the first core controller and the first electro-hydraulic servo valve;
the first input module is used for receiving the angle position signal and the target instruction signal; the first core controller is used for detecting a first working state of the first electro-hydraulic servo valve and generating a first driving signal according to the angle position signal and the target command signal sent by the first input module; the first output module is used for outputting the first working state and the first driving signal.
Optionally, the slave servo controller comprises a second input module, a second core controller and a second output module;
the second input module is respectively connected with the displacement sensing unit, the first output module and the second core controller; the second core controller is respectively connected with the second input module and the second output module; the second output module is respectively connected with the second core controller and the second electro-hydraulic servo valve;
the second input module is used for receiving the angle position signal, the target instruction signal and the first working state;
the second core controller is to:
detecting a second working state of the host servo controller;
judging whether the first electro-hydraulic servo valve has a fault according to the first working state sent by the first output module;
judging whether the host servo controller fails according to the second working state;
when any one of the host servo controller and the first electro-hydraulic servo valve has a fault, generating a second driving signal according to the angle position signal and the target command signal sent by the first output module;
the second output module is used for outputting the second driving signal.
Optionally, the hydraulic protection device further comprises a control solenoid valve; the control electromagnetic valve is respectively connected with the slave servo controller, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve;
the control electromagnetic valve is used for controlling the first electro-hydraulic servo valve to be closed and controlling the second electro-hydraulic servo valve to be conducted when any one of the host servo controller and the first electro-hydraulic servo valve breaks down.
Optionally, the control solenoid comprises a catch solenoid and a point solenoid; the position locking electromagnetic valve is respectively connected with the slave servo controller, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve; the inching electromagnetic valve is respectively connected with the slave servo controller, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve;
the position locking electromagnetic valve is used for controlling the first electro-hydraulic servo valve to be closed when any one of the host servo controller and the first electro-hydraulic servo valve is in fault; the inching electromagnetic valve is used for controlling the conduction of the second electro-hydraulic servo valve when any one of the host servo controller and the first electro-hydraulic servo valve fails.
Optionally, the method further comprises: a drive device; the output end of the first electro-hydraulic servo valve and the output end of the second electro-hydraulic servo valve are both communicated with the input end of the driving device; and the output end of the driving device is communicated with the fixed blade of the axial flow fan.
Optionally, the driving device comprises a servo oil cylinder and two oil pipes; the first electro-hydraulic servo valve is communicated with the servo oil cylinder through one oil pipe; the second electro-hydraulic servo valve is communicated with the servo oil cylinder through the other oil pipe; and the servo oil cylinder is communicated with the fixed blade of the axial flow fan.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the embodiment of the invention provides an axial flow fan stator blade angle control system, which is characterized in that a displacement sensing unit, a host servo controller, a slave servo controller and a hydraulic protection device are respectively arranged in the axial flow fan stator blade angle control system; wherein the hydraulic protection device comprises a first electro-hydraulic servo valve and a second electro-hydraulic servo valve. According to the angle control system for the stationary blade of the axial flow fan, on the basis of traditional single-machine control, the slave servo controller is arranged to serve as a standby controller of the master servo controller, when the master servo controller or the first electro-hydraulic servo valve fails, a problem component can be replaced in time through the control of the slave servo controller, so that the normal operation of the stationary blade of the axial flow fan is guaranteed, the hidden danger that a certain component can be stopped at any time when the problem occurs in the existing single-machine control scheme is solved, and the requirement of users for continuous production is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a vane angle control system of an axial flow fan according to an embodiment of the present invention.
Description of the symbols:
1-a displacement sensing unit; 2-a host servo controller; 3-slave servo controller; 4-a hydraulic protection device; 5-driving device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an axial flow fan stator blade angle control system, which realizes uninterrupted servo tracking control on the axial flow fan stator blade angle by arranging a double servo controller, solves the hidden trouble that a certain part can be stopped at any time when a problem occurs in the existing single machine control scheme, and meets the requirement of uninterrupted production of a user.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the vane angle control system of an axial flow fan according to the present invention includes: the system comprises a displacement sensing unit 1, a master servo controller 2, a slave servo controller 3 and a hydraulic protection device 4; the hydraulic protection device 4 includes a first electro-hydraulic servo valve and a second electro-hydraulic servo valve.
Specifically, the displacement sensing unit 1 is respectively connected with the master servo controller 2 and the slave servo controller 3; the master servo controller 2 is also respectively connected with the slave servo controller 3 and the first electro-hydraulic servo valve; the slave servo controller 3 is also connected with the second electro-hydraulic servo valve.
The displacement sensing unit 1 is used for acquiring an angle position signal of the stationary blade of the axial flow fan. The host servo controller 2 is configured to: detecting a first working state of the first electro-hydraulic servo valve; and generating a first driving signal according to the angular position signal and the received target command signal. The slave servo controller 3 is configured to: detecting a second working state of the host servo controller 2; judging whether the first electro-hydraulic servo valve has a fault according to the received first working state; judging whether the host servo controller fails according to the second working state; and when any one of the host servo controller and the first electro-hydraulic servo valve has a fault, generating a second driving signal according to the angle position signal and the received target command signal. The first electro-hydraulic servo valve is used for controlling the direction and the size of a valve port according to the first driving signal when the main machine servo controller and the first electro-hydraulic servo valve are not in fault, so as to control power oil to output hydraulic pressure and further drive the stationary blade of the axial flow fan to rotate. The second electro-hydraulic servo valve is used for controlling the direction and the size of a valve port according to the second driving signal when any one of the host servo controller and the first electro-hydraulic servo valve fails, so as to control hydraulic pressure output by hydraulic oil and further drive the stationary blade of the axial flow fan to rotate.
Further, the displacement sensing unit 1 comprises one or more position sensors; the position sensor is arranged on the fixed blade of the axial flow fan; the position sensor is respectively connected with the master servo controller 2 and the slave servo controller 3.
Preferably, when the displacement sensing unit 1 is a plurality of position sensors, the host servo controller 2 is further configured to compare a plurality of angular position signals, and determine whether a faulty position sensor exists in the plurality of position sensors according to a comparison result; the slave servo controller 3 is further configured to receive a plurality of angle position signals when the master servo controller fails, compare the plurality of angle position signals, and determine whether a failed position sensor exists among the plurality of position sensors according to a comparison result.
Further, the host servo controller 2 includes a first input module, a first core controller and a first output module.
Specifically, the first input module is respectively connected with the displacement sensing unit 1 and the first core controller; the first core controller is respectively connected with the first input module, the first electro-hydraulic servo valve and the first output module; the first output module is connected with the first core controller and the first electro-hydraulic servo valve respectively.
The first input module is used for receiving the angle position signal and the target instruction signal; the first core controller is used for detecting a first working state of the first electro-hydraulic servo valve and generating a first driving signal according to the angle position signal and the target command signal sent by the first input module; the first output module is used for outputting the first working state and the first driving signal.
Further, the slave servo controller 3 includes a second input module, a second core controller and a second output module.
Specifically, the second input module is respectively connected to the displacement sensing unit 1, the first output module, and the second core controller; the second core controller is respectively connected with the second input module and the second output module; the second output module is respectively connected with the second core controller and the second electro-hydraulic servo valve.
The second input module is used for receiving the angle position signal, the target instruction signal and the first working state. The second core controller is to: detecting a second working state of the host servo controller 2; judging whether the first electro-hydraulic servo valve has a fault according to the first working state sent by the first output module; judging whether the host servo controller fails according to the second working state; and when any one of the host servo controller and the first electro-hydraulic servo valve has a fault, generating a second driving signal according to the angle position signal and the target command signal sent by the first output module. The second output module is used for outputting the second driving signal.
Further, the hydraulic protection device 4 further comprises a control solenoid valve; the control solenoid valve is respectively connected with the slave servo controller 3, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve.
Specifically, the control solenoid valve is used for controlling the first electro-hydraulic servo valve to close and controlling the second electro-hydraulic servo valve to conduct when any one of the host servo controller and the first electro-hydraulic servo valve fails.
Preferably, the control solenoid includes a latch solenoid and a click solenoid.
Specifically, the position locking solenoid valve is respectively connected with the slave servo controller 3, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve; the inching electromagnetic valve is respectively connected with the slave servo controller 3, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve.
The position locking electromagnetic valve is used for controlling the first electro-hydraulic servo valve to be closed when any one of the host servo controller and the first electro-hydraulic servo valve is in fault; the inching electromagnetic valve is used for controlling the second electro-hydraulic servo valve to be conducted when any one of the host servo controller and the first electro-hydraulic servo valve breaks down.
Further, the angle control system of the stator blade of the axial flow fan of the invention further comprises: a drive device 5; the output end of the first electro-hydraulic servo valve and the output end of the second electro-hydraulic servo valve are both communicated with the input end of the driving device 5; the output end of the driving device 5 is communicated with the fixed blade of the axial flow fan.
Preferably, the driving device 5 comprises a servo oil cylinder and two oil pipes; the first electro-hydraulic servo valve is communicated with the servo oil cylinder through one oil pipe; the second electro-hydraulic servo valve is communicated with the servo oil cylinder through the other oil pipe; the servo oil cylinder is communicated with the axial flow fan stationary blade.
In the present embodiment, the position sensor is connected to the vane angular displacement mechanical structure, and at the same time, the angular displacement of the vane is transmitted to the redundant servo controller, that is, the slave servo controller 3, by connecting the same analog signals in a plurality of paths. The servo controller comprises two sets of hot standby controllers which are a master servo controller 2 and a slave servo controller 3 respectively, and the two servo controllers are connected through two interfaces with high-speed pulse functions and used for transmitting communication data. Each servo controller is composed of the same hardware and comprises an analog input module, a core controller and an analog output module. The analog input module is provided with four analog input interfaces, three analog input interfaces are used for being connected with the position sensor of the stator blade, receiving the transmitted angle position signal and one target command signal for controlling the action of the stator blade and transmitted by a superior system, and all the analog signals are transmitted to the core controller for processing through analog-to-digital conversion. The core controller compares the deviation of the angle position signal and the target command signal, outputs the analog quantity of the driving signal generated by deviation operation to the analog output module according to the PID algorithm, further controls the control electromagnetic valve in the hydraulic protection device 4, switches the master/slave electro-hydraulic servo valves, and realizes redundant control. That is, when the angle position signal is not equal to the target command signal, the difference value is subjected to proportional, integral and differential operations to generate a driving signal, so as to control the direction and the size of the opening of the electro-hydraulic servo valve in the hydraulic protection device 4, and the power oil pushes the oil cylinder through the opening to further push the stationary blade to move. The core controller switches the two electro-hydraulic servo valves and the oil passages thereof by controlling the electromagnetic valves, thereby controlling the servo oil cylinder and driving the angle change of the stationary blade.
When the angular position signal is fed back to the dual-motor servo controller, the feedback signal abnormality may cause abnormal operation or non-operation of the stationary blade. Thus, the position sensors can be simultaneously detected by using multiple signal transmissions. When the multipath signals are transmitted to the dual-computer servo controller, the dual-computer servo controller judges whether the feedback signals have faults or not in a majority voting mode, positions the fault signals and takes measures. Taking three-way signal transmission as an example, the same signal is measured by using three feedback signals, and one path of signal is determined finally after voting, the three feedback signals firstly carry out feedback position sensor fault judgment and automatically eliminate fault data, then data difference absolute value comparison is carried out, and two groups of data with the absolute difference value smaller than the limit value are selected as input data. The reliability of the feedback signal measurement is greatly improved by a majority voting mode.
In this embodiment, the host servo controller 2 is mainly in a working state, and realizes functions of data acquisition, operation, control output and the like of the system; the slave servo controller 3 is mainly in a standby state and also has the functions of data acquisition, operation, control output and the like of the system, but the system state of the master servo controller is detected in real time through a high-speed communication channel, and whether the state switching of the master/slave servo controller is needed or not is judged through analysis, comparison and arbitration, and the control right switching is guaranteed to be fast and undisturbed and is less than 10 ms.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; also, for those skilled in the art, there may be variations to the specific embodiments and applications of the present invention based on the concepts of the present invention. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides an quiet leaf angle control system of axial fan which characterized in that includes: the system comprises a displacement sensing unit, a master servo controller, a slave servo controller and a hydraulic protection device; the hydraulic protection device comprises a first electro-hydraulic servo valve and a second electro-hydraulic servo valve;
the displacement sensing unit is respectively connected with the host servo controller and the slave servo controller; the master servo controller is also respectively connected with the slave servo controller and the first electro-hydraulic servo valve; the slave servo controller is also connected with the second electro-hydraulic servo valve;
the displacement sensing unit is used for acquiring an angle position signal of the stationary blade of the axial flow fan;
the host servo controller is used for:
detecting a first working state of the first electro-hydraulic servo valve;
generating a first driving signal according to the angle position signal and the received target command signal;
the slave servo controller is configured to:
detecting a second working state of the host servo controller;
judging whether the first electro-hydraulic servo valve has a fault according to the received first working state;
judging whether the host servo controller fails according to the second working state;
when any one of the host servo controller and the first electro-hydraulic servo valve has a fault, generating a second driving signal according to the angle position signal and the received target command signal;
the first electro-hydraulic servo valve is used for controlling the direction and the size of a valve port according to the first driving signal when the main machine servo controller and the first electro-hydraulic servo valve are not in fault so as to control power oil to output hydraulic pressure and further drive the stationary blade of the axial flow fan to rotate;
and the second electro-hydraulic servo valve is used for controlling the direction and the size of a valve port according to the second driving signal when any one of the host servo controller and the first electro-hydraulic servo valve fails so as to control power oil to output hydraulic pressure and further drive the stationary blade of the axial flow fan to rotate.
2. The axial fan vane angle control system of claim 1, wherein the displacement sensing unit comprises one or more position sensors; the position sensor is arranged on the fixed blade of the axial flow fan; and the position sensor is respectively connected with the master servo controller and the slave servo controller.
3. The axial flow fan vane angle control system of claim 2, wherein when the displacement sensing unit is a plurality of position sensors, the master servo controller is further configured to compare a plurality of angular position signals, and determine whether a faulty position sensor exists among the plurality of position sensors according to the comparison result; and the slave servo controller is also used for receiving a plurality of angle position signals when the master servo controller fails, comparing the angle position signals and determining whether a failed position sensor exists in the position sensors according to a comparison result.
4. The axial fan vane angle control system of claim 1, wherein the host servo controller comprises a first input module, a first core controller, and a first output module;
the first input module is respectively connected with the displacement sensing unit and the first core controller; the first core controller is respectively connected with the first input module, the first electro-hydraulic servo valve and the first output module; the first output module is respectively connected with the first core controller and the first electro-hydraulic servo valve;
the first input module is used for receiving the angle position signal and the target instruction signal; the first core controller is used for detecting a first working state of the first electro-hydraulic servo valve and generating a first driving signal according to the angle position signal and the target command signal sent by the first input module; the first output module is used for outputting the first working state and the first driving signal.
5. The axial fan vane angle control system of claim 4, wherein the slave servo controller comprises a second input module, a second core controller, and a second output module;
the second input module is respectively connected with the displacement sensing unit, the first output module and the second core controller; the second core controller is respectively connected with the second input module and the second output module; the second output module is respectively connected with the second core controller and the second electro-hydraulic servo valve;
the second input module is used for receiving the angle position signal, the target instruction signal and the first working state;
the second core controller is to:
detecting a second working state of the host servo controller;
judging whether the first electro-hydraulic servo valve has a fault according to the first working state sent by the first output module;
judging whether the host servo controller fails according to the second working state;
when any one of the host servo controller and the first electro-hydraulic servo valve has a fault, generating a second driving signal according to the angle position signal and the target command signal sent by the first output module;
the second output module is used for outputting the second driving signal.
6. The axial fan vane angle control system of claim 1, wherein the hydraulic protection device further comprises a control solenoid valve; the control electromagnetic valve is respectively connected with the slave servo controller, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve;
the control electromagnetic valve is used for controlling the first electro-hydraulic servo valve to be closed and controlling the second electro-hydraulic servo valve to be conducted when any one of the host servo controller and the first electro-hydraulic servo valve fails.
7. The axial fan vane angle control system of claim 6, wherein the control solenoid comprises a detent solenoid and a point solenoid; the position locking electromagnetic valve is respectively connected with the slave servo controller, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve; the inching electromagnetic valve is respectively connected with the slave servo controller, the first electro-hydraulic servo valve and the second electro-hydraulic servo valve;
the position locking electromagnetic valve is used for controlling the first electro-hydraulic servo valve to be closed when any one of the host servo controller and the first electro-hydraulic servo valve is in fault; the inching electromagnetic valve is used for controlling the conduction of the second electro-hydraulic servo valve when any one of the host servo controller and the first electro-hydraulic servo valve fails.
8. The axial fan vane angle control system of claim 1, further comprising: a drive device; the output end of the first electro-hydraulic servo valve and the output end of the second electro-hydraulic servo valve are both communicated with the input end of the driving device; the output end of the driving device is communicated with the fixed blade of the axial flow fan.
9. The axial flow fan vane angle control system of claim 8, wherein the drive means comprises a servo cylinder and a two-way oil pipe; the first electro-hydraulic servo valve is communicated with the servo oil cylinder through one oil pipe; the second electro-hydraulic servo valve is communicated with the servo oil cylinder through the other oil pipe; the servo oil cylinder is communicated with the axial flow fan stationary blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210135765.0A CN114688065A (en) | 2022-02-15 | 2022-02-15 | Quiet leaf angle control system of axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210135765.0A CN114688065A (en) | 2022-02-15 | 2022-02-15 | Quiet leaf angle control system of axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114688065A true CN114688065A (en) | 2022-07-01 |
Family
ID=82137937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210135765.0A Pending CN114688065A (en) | 2022-02-15 | 2022-02-15 | Quiet leaf angle control system of axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114688065A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205101049U (en) * | 2015-11-04 | 2016-03-23 | 内蒙古包钢钢联股份有限公司 | Accurate electric liquid servo control device of TRT system |
| CN107908171A (en) * | 2017-10-31 | 2018-04-13 | 北京精密机电控制设备研究所 | A kind of double remaining electricity feedback servo actuator fault diagnosises and remaining algorithm |
| CN211525648U (en) * | 2019-11-29 | 2020-09-18 | 北京瑞赛长城航空测控技术有限公司 | Electro-hydraulic servo controller |
| CN111963748A (en) * | 2020-08-19 | 2020-11-20 | 上海自动化仪表有限公司 | Dual-card dual-control servo control system with redundancy function and control method thereof |
| CN215369958U (en) * | 2021-03-12 | 2021-12-31 | 满洲里达赉湖热电有限公司 | Redundant servo control system of steam turbine valve |
-
2022
- 2022-02-15 CN CN202210135765.0A patent/CN114688065A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205101049U (en) * | 2015-11-04 | 2016-03-23 | 内蒙古包钢钢联股份有限公司 | Accurate electric liquid servo control device of TRT system |
| CN107908171A (en) * | 2017-10-31 | 2018-04-13 | 北京精密机电控制设备研究所 | A kind of double remaining electricity feedback servo actuator fault diagnosises and remaining algorithm |
| CN211525648U (en) * | 2019-11-29 | 2020-09-18 | 北京瑞赛长城航空测控技术有限公司 | Electro-hydraulic servo controller |
| CN111963748A (en) * | 2020-08-19 | 2020-11-20 | 上海自动化仪表有限公司 | Dual-card dual-control servo control system with redundancy function and control method thereof |
| CN215369958U (en) * | 2021-03-12 | 2021-12-31 | 满洲里达赉湖热电有限公司 | Redundant servo control system of steam turbine valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10127163B2 (en) | Control device for controlling a safety device, and use of an IO link for transmission of a safety protocol to a safety device | |
| US7911333B2 (en) | Motion monitoring | |
| CN2871853Y (en) | Valve-level controller | |
| CN102096401B (en) | Redundant and fault-tolerant safety instrument control system based on fieldbus and ARM (advanced RISC machines) | |
| US8583294B2 (en) | Actuation control system | |
| CN106346479B (en) | A kind of controller and safety system of robot | |
| CN102192353B (en) | Valve control system and valve control method | |
| EP3014364B1 (en) | System and method for shutting down a field device | |
| JP2010204775A (en) | Multiplex redundant system control system | |
| CN208673079U (en) | The safety control system and industrial robot of industrial robot | |
| CN108233823B (en) | Fault-tolerant proportional coordination control method of multi-motor servo drive system under coupled control structure | |
| JPWO2017056688A1 (en) | Monitoring system and vehicle control device | |
| US4257311A (en) | Control systems | |
| US9768990B2 (en) | Device for manipulating interface signals | |
| CN105204431A (en) | Monitoring-determining method and device for four redundancy signals | |
| EP1979578B1 (en) | An actuator arrangement and a method of operating an actuator | |
| CN114688065A (en) | Quiet leaf angle control system of axial fan | |
| CN105159263A (en) | Intelligent electro-hydraulic actuator self-healing regulation and control system control method | |
| WO2013111240A1 (en) | Duplex control system and control method therefor | |
| CN201496345U (en) | Pipeline bursting online security continuous work system of hydraulic equipment | |
| CN112114574B (en) | Dual-redundancy servo system fault detection and isolation method and system | |
| CN107387859B (en) | A kind of intelligence is double to select valve position feedback control method | |
| US4447769A (en) | Redundant actuation system | |
| KR20140135031A (en) | Redundancy system and controllin method thereof | |
| US7873484B2 (en) | Method for reliable position monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |