CN110865603A - Electrical control system of aircraft engine test bed - Google Patents
Electrical control system of aircraft engine test bed Download PDFInfo
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- CN110865603A CN110865603A CN201911285972.9A CN201911285972A CN110865603A CN 110865603 A CN110865603 A CN 110865603A CN 201911285972 A CN201911285972 A CN 201911285972A CN 110865603 A CN110865603 A CN 110865603A
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 34
- 238000012544 monitoring process Methods 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 238000001179 sorption measurement Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
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- 244000309464 bull Species 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000007 visual effect Effects 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 48
- 238000005259 measurement Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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Abstract
Aeroengine test bench electrical control system belongs to industrial equipment electrical control field, go up host computer PLC system as control core, host computer PLC system control connects main air flow fan control system, compressed air source control system, auxiliary assembly control system, the operation panel, auxiliary assembly control system connects UPS power and other auxiliary assembly, UPS power connects data acquisition system and host computer PLC system, main air flow fan control system, compressed air source control system, auxiliary assembly control system all sets up the distribution equipment power supply. The electric control system adopts a control mode combining an independent system and centralized control, takes an S7-1500 type PLC as a control core and an industrial personal computer as a visual control interface, and can realize automatic control and regulation of a rotation measuring mechanism, main gas flow, anti-icing pressure and the like through a soft start/servo control/variable frequency speed regulation technology, an industrial Ethernet and RS485 communication technology and a pressure/flow closed-loop control technology.
Description
Technical Field
The invention relates to the field of industrial equipment electrical control, in particular to an aircraft engine test bed electrical control system.
Background
The test bed is mainly used for the total pressure loss and total pressure distortion of the particle separator and the air flow measurement test of the anti-icing air guide pipeline so as to determine whether the measurement parameters meet the design requirements.
According to the practical requirements of an aircraft engine test bed, the operation of a main airflow fan is controlled, the flow of the fan is automatically adjusted, a main airflow valve, an anti-icing air inlet adjusting valve and the like are adjusted, a rotation measuring mechanism is controlled, the test bed has the functions of operation control, monitoring, interlocking, protection, sound and light alarm and the like, and the test bed can realize the safety alarm and automatic protection parking functions of overload, phase loss, overcurrent and the like of the main airflow fan.
Therefore, it is desirable to design an electrical control system which meets the requirements of an aircraft engine test bed and is stable and reliable in operation.
Disclosure of Invention
In order to solve the technical problems, the invention discloses an electrical control system of an aircraft engine test bed, which is used for controlling a main airflow fan/rotation measuring mechanism to operate, regulating the flow of the fan, regulating a main airflow valve, an anti-icing air inlet regulating valve and the like, has the functions of test bed operation control, monitoring, interlocking, protection, sound-light alarm and the like, and can realize the safety alarm and automatic protection parking functions of main airflow fan overload, phase loss, overcurrent and the like.
In order to realize the technical purpose, the technical scheme is as follows:
the electrical control system of the aircraft engine test bed takes an upper computer PLC system as a control core, the upper computer PLC system is in control connection with a main airflow fan control system, a compressed air source control system, an operation system, an auxiliary equipment control system and an operation panel, the auxiliary equipment control system is connected with a UPS power supply and other auxiliary equipment, the UPS power supply is connected with a data acquisition system and the upper computer PLC system, and the main airflow fan control system, the compressed air source control system and the auxiliary equipment control system are all provided with power distribution equipment for power supply.
Furthermore, the upper computer PLC system is a PLC control cabinet, and comprises a switch, a PLC controller, a circuit breaker, a power module and a relay, so that the functions of signal acquisition, signal processing, logic/linkage/closed-loop control, alarm, parking protection and communication are realized.
Furthermore, the upper computer PLC system switch supports an Ethernet wired network transmission mode, and the PLC controller supports an RS485 communication mode and protocol.
Furthermore, the main air flow fan control system comprises a main air flow fan, a first electric regulating valve, a second electric regulating valve, a cooling water pump, a cooling fan and a frequency converter, wherein the opening degree of the first electric regulating valve/the second electric regulating valve is controlled by an upper computer PLC system to regulate the air flow of the main air flow fan, the frequency converter selects an ACS880-07-0725A-3 type variable frequency speed regulating cabinet to control the rotating speed of the main air flow fan, and the main air flow fan, the cooling water pump and the cooling fan are controlled by the upper computer PLC system or an auxiliary equipment control system through one key on/off control to ensure the safe operation of equipment; the data acquisition system acquires and calculates an airflow flow value, the electric control system acquires an actual airflow flow value in an Ethernet communication mode, and the flow control precision and the response time are guaranteed through closed-loop control.
Furthermore, the compressed air source control system mainly comprises an adsorption dryer, a screw compressor and a third electric regulating valve, the adsorption dryer and the screw compressor can be controlled on site, a remote control interface is reserved, start/stop control, working state indication and/or real-time monitoring operation parameters can be realized through signal transmission, and the third electric regulating valve is used for controlling and regulating the air supply pressure of the anti-icing air entraining by an upper computer PLC system.
Further, the control system comprises an industrial personal computer, a display and a button, the industrial personal computer is used for state monitoring and control and PLC programming, the display is used for test bed equipment control and electrical parameter display, and the button is used for power supply control and emergency stop control.
Furthermore, auxiliary assembly control system mainly includes the AC control cabinet, comprises circuit breaker, contactor, relay, servo drive system, provides the power for test bench electric regulating valve, cooling water pump, cooling blower, servo drive, UPS, TV monitored control system to have overload, short circuit, decompression protect function.
Furthermore, the servo driving system drives the small gear of the test bed rotation measuring mechanism, and then drives the large gear and the measuring ring to rotate so as to control the rotation measuring mechanism.
Furthermore, the control console adopts a piano type structure, is made of carbon steel, is sprayed with plastic on the surface, and is provided with 5 working table positions, including 2 electric control system displays, 2 testing system displays and 1 television monitoring system display.
Furthermore, the electrical control system further comprises a cable and an electrical accessory, wherein the cable is used for connecting all the devices, the electrical accessory comprises a bridge, and the bridge is an aluminum alloy groove type bridge.
The electrical control system of the invention adopts a control mode combining an independent system and centralized control, takes an S7-1500 type PLC as a control core and an industrial personal computer as a visual control interface, realizes the operation control of a main airflow fan and automatically adjusts the fan flow, an anti-icing air inlet adjusting valve and the like through a soft start/servo control/frequency conversion speed regulation technology, an industrial Ethernet and RS485 communication technology and a pressure/flow closed-loop control technology so as to meet the requirements of a test bed on the flow and the pressure, has the functions of test bed operation control, monitoring/storage/real-time sharing, interlocking/alarming/automatic protection/emergency stop and the like, and ensures the safe operation of test equipment.
Drawings
FIG. 1 is a schematic block diagram of the electrical control system of the present invention;
fig. 2 is a schematic diagram of a test bench controlled by the electrical control system of the present invention.
1. A main air flow fan; 2. a first electric regulating valve; 3. a second electric regulating valve; 4. an electric regulating valve III; 5. an adsorption dryer; 6. a screw compressor.
Detailed Description
The invention is further illustrated by the following specific examples. The starting materials and methods employed in the examples of the present invention are those conventionally available in the market and conventionally used in the art, unless otherwise specified.
Example 1
As shown in fig. 1, the electrical control system of the test bed of the aircraft engine mainly comprises an upper computer PLC system, a main airflow fan control system, a compressed air source control system, an operation system, an auxiliary device control system and an operation console, wherein the auxiliary device control system is connected with a UPS power supply and other auxiliary devices, the UPS power supply is connected with a data acquisition system and the upper computer PLC system, and the main airflow fan control system, the compressed air source control system and the auxiliary device control system are all provided with power distribution equipment for power supply.
Specifically, the host computer PLC system is the PLC switch board, including switch, PLC controller, circuit breaker, power module, relay, realizes signal acquisition, processing, logic/chain/closed-loop control, warning, protection parking, communication function. The PLC controller is Siemens latest generation S7-1500PLC, the analog input/output quantity is 16 bits, the signal processing speed is high-efficient and reliable, the storage capacity is large, a Profinet real-time communication interface and a self-tuning PID controller are integrated, an Ethernet wired network transmission mode and an RS485 communication mode and protocol are supported, the information transmission is more convenient, the control function is stronger, and accessories such as a cooling fan, a lighting lamp, a fan, a door control switch and the like are arranged in the PLC control cabinet.
The main air flow fan control system comprises a main air flow fan 1, a first electric regulating valve 2, a second electric regulating valve 3, a cooling water pump, a cooling fan and a frequency converter, wherein the opening degree of the first electric regulating valve/second electric regulating valve (2, 3) is controlled by a PLC (programmable logic controller), the opening degree setting and valve position feedback indication are arranged on a display screen of the control system, the frequency converter selects an ACS880-07-0725A-3 type variable frequency speed regulation cabinet, the main air flow fan uses a variable frequency motor, the rotating speed of the main air flow fan is controlled by the frequency converter, and the main air flow is cooperatively regulated by the rotating speed of the variable frequency motor and the opening degree of the first electric regulating valve/second electric regulating; the main air flow fan 1, the cooling water pump and the cooling fan are controlled by a host computer PLC system or an auxiliary equipment control system through one key to start/stop, so that the equipment operation safety is ensured (the cooling water pump and the cooling fan also have independent manual start/stop functions); the data acquisition system acquires and calculates an airflow flow value, the electric control system acquires an actual airflow flow value in an Ethernet communication mode, and the flow control precision and the response time are effectively guaranteed through closed-loop control.
The compressed air source control system mainly comprises an adsorption dryer 5, a screw compressor 6 and an electric regulating valve III 4, wherein the adsorption dryer 5 and the screw compressor 6 can be controlled on site, a remote control RS485 interface is reserved and connected with a PLC (programmable logic controller), the screw compressor 6 carries out signal transmission through RS485 communication to realize remote start/stop control, main parameters such as exhaust pressure, exhaust temperature and current and alarm protection signals are monitored in real time, the adsorption dryer 5 is provided with a remote control interface, and remote start/stop control and working state indication are realized through signal transmission; and the third electric regulating valve is used for controlling and regulating the air supply pressure of the anti-icing air entraining by a PLC controller, an air supply pressure signal is input into the PLC through a 16-bit analog quantity module, the pressure is accurately controlled through PID closed-loop control, and the pressure regulating precision can meet the requirements of +/-1% F.S.
The control system comprises an industrial personal computer, a display and a button, wherein the industrial personal computer is provided with 1 display for state monitoring and control and PLC programming, 2 displays (each touch screen/non-touch screen) are arranged for test bed equipment control and electrical parameter display, and the button is used for power supply control and emergency stop control and selects a Schneider product.
The auxiliary equipment control system mainly comprises an alternating current control cabinet, and is composed of a circuit breaker, a contactor, a relay and a servo drive system (the servo controller adopts a Siemens V90 type controller and is uniformly controlled by an S7-1500 type PLC controller through Ethernet communication), so that a power supply is provided for the electric adjusting valve, the cooling water pump, the cooling fan, the servo drive, the UPS and the television monitoring system of the test bed, and the auxiliary equipment control system has the functions of overload, short circuit and voltage loss protection.
A servo motor of the servo driving system drives a pinion of the test bed rotation measuring mechanism, and then drives a bull gear and a measuring ring to rotate so as to control the rotation measuring mechanism.
The control console adopts a piano type structure, is made of carbon steel, is sprayed with plastic on the surface, and is provided with 5 working stations, and comprises 2 electric control system displays, 2 testing system displays and 1 television monitoring system display.
The electric control system further comprises a cable and electric accessories, the cable is used for connecting all the devices, each electric accessory comprises a bridge, and the bridge is an aluminum alloy groove type bridge.
Example 2
As shown in fig. 2, when a test piece pneumatic performance measurement test is performed, ambient air enters the test piece through an air inlet channel, a temperature measuring point, a static pressure measuring point and a total pressure measuring point are arranged on the air inlet channel, and the temperature, the static pressure and the total pressure of the air entering the test piece are measured. Air flows into the rotary measuring device after flowing through the test piece, the rotary measuring device is provided with 3 sets of pressure measuring probes, each set of probe comprises 5 total pressure and 1 static pressure measuring point, 3 total pressure channels and 1 static pressure channel are reserved in the data acquisition system, the 3 sets of pressure measuring probes are uniformly distributed on the measuring section in 120 degrees, and the pressure measuring probes rotate under the driving of a servo motor to realize the measurement of the whole flow field pressure of the outlet of the test piece. Air at the outlet of the rotation measuring device enters the main airflow fan 1 after passing through the rectifier, the flowmeter Q1 and the electric control valves I2 and II 3, and the air exhausted by the main airflow fan 1 is discharged into the atmosphere after noise is eliminated through the exhaust muffler. The total pressure loss sigma can be calculated through the inlet pressure and the outlet pressure of the test piece, and the total pressure distortion index DC60 can be obtained through the measurement of the outlet pressure field of the test piece.
When an anti-icing air entraining flow test of a test piece is carried out, compressed air is supplied by a screw air compressor 6, the compressed air enters a test room after passing through an air storage tank, an air-water separator, an adsorption dryer 5 and an air filter, and the air supply pressure of the screw air compressor 6 is 1.0 MPa. Compressed air entering the test room is connected into the anti-icing air-entraining port of the test piece after passing through the electric regulating valve III 4 and the flowmeter Q2. The air supply pressure of the anti-icing bleed air is adjusted by an electric adjusting valve III 4. Whether the anti-icing bleed air flow meets the design requirements under the specified pressure can be judged by measuring the air flow passing through the anti-icing channel of the test piece under different pressures.
The cooling water system is used for supplying cooling water for the middle pivot of the main airflow fan.
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 shall fall within the protection scope of the present invention.
Claims (10)
1. The electrical control system of the aircraft engine test bed is characterized in that the upper computer PLC system is in control connection with a main airflow fan control system, a compressed air source control system, an operation system, an auxiliary equipment control system and an operation platform, the auxiliary equipment control system is connected with a UPS power supply and other auxiliary equipment, the UPS power supply is connected with a data acquisition system and the upper computer PLC system, and the main airflow fan control system, the compressed air source control system and the auxiliary equipment control system are all provided with power distribution equipment for power supply.
2. The electrical control system of claim 1, wherein the upper computer PLC system is a PLC control cabinet, and comprises an exchanger, a PLC controller, a circuit breaker, a power module and a relay, and the functions of signal acquisition, processing, logic/linkage/closed-loop control, alarming, parking protection and communication are realized.
3. The electrical control system of claim 2, wherein the host PLC system switch supports ethernet wired network transmission and the PLC controller supports RS485 communication and protocols.
4. The electrical control system of claim 1, wherein the main air flow fan control system comprises a main air flow fan, a first electric regulating valve, a second electric regulating valve, a cooling water pump, a cooling fan and a frequency converter, wherein the opening degree of the first/second electric regulating valve is controlled by an upper computer PLC system to regulate the air flow of the main air flow fan, the frequency converter is an ACS880-07-0725A-3 type variable frequency speed regulating cabinet and is used for controlling the rotating speed of the main air flow fan, and the main air flow fan, the cooling water pump and the cooling fan are controlled by the upper computer PLC system or an auxiliary equipment control system through one key on/off control to ensure the safe operation of equipment; the data acquisition system acquires and calculates an airflow flow value, the electric control system acquires an actual airflow flow value in an Ethernet communication mode, and the flow control precision and the response time are guaranteed through closed-loop control.
5. The electrical control system of claim 1, wherein the compressed air source control system mainly comprises an adsorption dryer, a screw compressor and a third electric regulating valve, the adsorption dryer and the screw compressor can be controlled on site, a remote control interface is reserved, start/stop control, working state indication and/or real-time monitoring of operation parameters can be realized through signal transmission, and the third electric regulating valve is controlled by an upper computer PLC system to regulate the air supply pressure of the anti-icing bleed air.
6. The electrical control system of claim 1, wherein the control system comprises an industrial personal computer, a display and a button, the industrial personal computer is used for state monitoring and control and PLC programming, the display is used for test bed equipment control and electrical parameter display, and the button is used for power supply control and emergency stop control.
7. The electrical control system of claim 1, wherein the auxiliary equipment control system mainly comprises an ac control cabinet, which is composed of a circuit breaker, a contactor, a relay and a servo drive system, and provides power for the test bed electric regulating valve, the cooling water pump, the cooling fan, the servo drive, the UPS and the television monitoring system, and has the functions of overload, short circuit and voltage loss protection.
8. The electrical control system of claim 7, wherein the servo drive system drives the pinion of the test bed rotation measuring mechanism to drive the bull gear and the measuring ring to rotate so as to control the rotation measuring mechanism.
9. The electrical control system of claim 1, wherein the console is of a piano type structure, is made of carbon steel, is surface-sprayed with plastic, and is provided with 5 working positions comprising 2 electrical control system displays, 2 test system displays and 1 television monitoring system display.
10. The electrical control system of any one of claims 1-9, further comprising a cable and an electrical accessory, wherein the cable connects all of the devices, and wherein the electrical accessory comprises a bridge that is an aluminum alloy channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911285972.9A CN110865603B (en) | 2019-12-13 | 2019-12-13 | Electrical control system of aero-engine test bed |
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| CN201911285972.9A CN110865603B (en) | 2019-12-13 | 2019-12-13 | Electrical control system of aero-engine test bed |
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| CN110865603B CN110865603B (en) | 2024-06-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111426484A (en) * | 2020-05-06 | 2020-07-17 | 湖南汉能科技有限公司 | Air source system of test bed of aero-engine combustion chamber |
| CN111610032A (en) * | 2020-05-06 | 2020-09-01 | 湖南汉能科技有限公司 | Pipeline and valve system of aero-engine combustion chamber test bed |
| CN111829785A (en) * | 2020-07-13 | 2020-10-27 | 中国航空发动机研究院 | Special switching device of engine electrical control and switching system |
| CN112945562A (en) * | 2021-01-15 | 2021-06-11 | 北京动力机械研究所 | Control system and control method for high enthalpy engine test bed facility |
| CN113204206A (en) * | 2021-04-25 | 2021-08-03 | 北京航天动力研究所 | PLC-based multi-test-bed extrusion type medium supply control system and method |
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| CN113204206A (en) * | 2021-04-25 | 2021-08-03 | 北京航天动力研究所 | PLC-based multi-test-bed extrusion type medium supply control system and method |
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| CN110865603B (en) | 2024-06-21 |
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