CN110608867A - Large icing wind tunnel height simulation method - Google Patents
Large icing wind tunnel height simulation method Download PDFInfo
- Publication number
- CN110608867A CN110608867A CN201911041914.1A CN201911041914A CN110608867A CN 110608867 A CN110608867 A CN 110608867A CN 201911041914 A CN201911041914 A CN 201911041914A CN 110608867 A CN110608867 A CN 110608867A
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- wind tunnel
- icing wind
- height simulation
- pump set
- simulation system
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a large icing wind tunnel height simulation method, which comprises the steps of establishing an icing wind tunnel height simulation system, and then adopting the icing wind tunnel height simulation system to carry out height simulation on an icing wind tunnel; the method for establishing the icing wind tunnel height simulation system comprises the following steps of: 1) the technological process design and the construction installation design of the icing wind tunnel height simulation system are carried out; 2) designing, selecting, ordering, processing and manufacturing equipment, pipelines, instruments and control devices of the icing wind tunnel height simulation system; 3) determining technical requirements of all relevant equipment foundation civil engineering; 4) and (3) installing, on-site manufacturing and debugging the icing wind tunnel height simulation system, and performing wind tunnel operation joint debugging. The invention relates to a large icing wind tunnel height simulation method which can simulate the control of vacuum pressure in a wind tunnel with the height not more than 20000 m.
Description
Technical Field
The invention relates to the field of wind tunnels, in particular to a large icing wind tunnel height simulation method.
Background
Icing wind tunnel need dispose high analog system, and high analog system's main function is the pressure of control icing return circuit internal gas to make test section static pressure satisfy the pressure simulation requirement of different altitudes (local altitude ~ 20000m, wherein local altitude ~ 7000m mainly used icing test, 7000 ~ 20000m mainly used high altitude low reynolds number test), thereby the flight height of simulation aircraft.
Disclosure of Invention
The invention aims to provide a large icing wind tunnel height simulation method which can simulate the control of vacuum pressure in a wind tunnel with the height not more than 20000 m.
In order to achieve the purpose, the technical scheme of the invention is to design a large icing wind tunnel height simulation method, wherein an icing wind tunnel height simulation system is established first, and then the icing wind tunnel height simulation system is adopted to simulate the height of an icing wind tunnel;
the method for establishing the icing wind tunnel height simulation system comprises the following steps of:
1) the icing wind tunnel height simulation system comprises a process flow design and a construction installation design of the icing wind tunnel height simulation system, wherein the process flow design and the construction installation design comprise interface designs such as pumps, valves, pipelines and water-gas distribution, a pipeline system structure design, a valve model selection and the like;
2) designing, selecting, ordering, processing and manufacturing equipment (comprising a vacuum pump, various valves, a water purifying device, other auxiliary devices, a vacuum pump starting controller and the like), a pipeline, an instrument and a control device of the icing wind tunnel height simulation system;
3) determining technical requirements of all relevant equipment foundation civil engineering;
4) the method comprises the following steps of (1) installing, on-site manufacturing and debugging of an icing wind tunnel height simulation system, and wind tunnel operation joint debugging;
the built icing wind tunnel height simulation system comprises: the air suction main pipeline is connected with the icing wind tunnel, and the PLC is used for controlling the air suction main pipeline; the suction main pipeline is connected with a vacuum pump set, the vacuum pump set is composed of a roots pump set and a water ring pump set, the roots pump set comprises a plurality of roots pumps, and the water ring pump set comprises a plurality of water ring pumps; each roots pump is respectively provided with a soft starter, and each water ring pump is respectively provided with a frequency converter; the PLC controller comprises a power supply module, a main CPU, a communication module, an analog input end, a digital output end and a digital input end; each soft starter and each frequency converter are connected with a communication module of the PLC through a field bus;
the PLC controls the water ring pump set to work independently, and can simulate the control of vacuum pressure in the wind tunnel with the height less than 7000m (39 kPa);
the PLC controls the Roots pump set and the water ring pump set to work together, and can simulate the vacuum pressure control in the wind tunnel with the height of 7000m to 20000m (39 kPa to 5 kPa).
Preferably, each roots pump is respectively connected with a cooler, the cooler is supplied with water by a water tank, the water tank is provided with a cooling water tower, the water tank pumps water to the cooling water tower through a water pump, and the cooling water tower is provided with a fan; the water pump and the fan are connected with the motor control box; the motor control box is respectively connected with the analog input end, the digital output end and the digital input end of the PLC.
Preferably, the main air suction pipeline is also provided with a pneumatic butterfly valve, a pneumatic regulating valve, a pressure transmitter and a temperature transmitter; the pneumatic butterfly valve is positioned between the Roots pump set and the water ring pump set; the pneumatic regulating valve, the pressure transmitter and the temperature transmitter are all positioned between the icing wind tunnel and the vacuum pump set; the pneumatic control valve and the pneumatic butterfly valve are respectively provided with a pneumatic valve positioner; and each pneumatic valve positioner, the pressure transmitter and the temperature transmitter are connected with a communication module of the PLC through a field bus.
Preferably, the PLC controller is also connected with a vacuum pump plant monitoring station.
Preferably, the PLC is further connected with an icing wind tunnel core control upper computer through an optical fiber Ethernet.
The invention has the advantages and beneficial effects that: the method can simulate the vacuum pressure control in the wind tunnel with the height not more than 20000 m.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A large icing wind tunnel height simulation method comprises the steps of firstly establishing an icing wind tunnel height simulation system, and then adopting the icing wind tunnel height simulation system to carry out height simulation on an icing wind tunnel;
the method for establishing the icing wind tunnel height simulation system comprises the following steps of:
1) the icing wind tunnel height simulation system comprises a process flow design and a construction installation design of the icing wind tunnel height simulation system, wherein the process flow design and the construction installation design comprise interface designs such as pumps, valves, pipelines and water-gas distribution, a pipeline system structure design, a valve model selection and the like;
2) designing, selecting, ordering, processing and manufacturing equipment (comprising a vacuum pump, various valves, a water purifying device, other auxiliary devices, a vacuum pump starting controller and the like), a pipeline, an instrument and a control device of the icing wind tunnel height simulation system;
3) determining technical requirements of all relevant equipment foundation civil engineering;
4) the method comprises the following steps of (1) installing, on-site manufacturing and debugging of an icing wind tunnel height simulation system, and wind tunnel operation joint debugging;
the built icing wind tunnel height simulation system comprises: the air suction main pipeline is connected with the icing wind tunnel, and the PLC is used for controlling the air suction main pipeline; the suction main pipeline is connected with a vacuum pump set, the vacuum pump set is composed of a roots pump set and a water ring pump set, the roots pump set comprises a plurality of roots pumps, and the water ring pump set comprises a plurality of water ring pumps; each roots pump is respectively provided with a soft starter, and each water ring pump is respectively provided with a frequency converter; the PLC controller comprises a power supply module, a main CPU, a communication module, an analog input end, a digital output end and a digital input end; each soft starter and each frequency converter are connected with a communication module of the PLC through a field bus;
the PLC controls the water ring pump set to work independently, and can simulate the control of vacuum pressure in the wind tunnel with the height less than 7000m (39 kPa);
the PLC controls the Roots pump set and the water ring pump set to work together, and can simulate the vacuum pressure control in the wind tunnel with the height of 7000m to 20000m (39 kPa to 5 kPa).
Preferably, each roots pump is respectively connected with a cooler, the cooler is supplied with water by a water tank, the water tank is provided with a cooling water tower, the water tank pumps water to the cooling water tower through a water pump, and the cooling water tower is provided with a fan; the water pump and the fan are connected with the motor control box; the motor control box is respectively connected with the analog input end, the digital output end and the digital input end of the PLC.
Preferably, the main air suction pipeline is also provided with a pneumatic butterfly valve, a pneumatic regulating valve, a pressure transmitter and a temperature transmitter; the pneumatic butterfly valve is positioned between the Roots pump set and the water ring pump set; the pneumatic regulating valve, the pressure transmitter and the temperature transmitter are all positioned between the icing wind tunnel and the vacuum pump set; the pneumatic control valve and the pneumatic butterfly valve are respectively provided with a pneumatic valve positioner; and each pneumatic valve positioner, the pressure transmitter and the temperature transmitter are connected with a communication module of the PLC through a field bus.
Preferably, the PLC controller is also connected with a vacuum pump plant monitoring station.
Preferably, the PLC is further connected with an icing wind tunnel core control upper computer through an optical fiber Ethernet.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The large icing wind tunnel height simulation method is characterized in that an icing wind tunnel height simulation system is established first, and then the icing wind tunnel height simulation system is adopted to carry out height simulation on the icing wind tunnel;
the method for establishing the icing wind tunnel height simulation system comprises the following steps of:
1) the technological process design and the construction installation design of the icing wind tunnel height simulation system are carried out;
2) designing, selecting, ordering, processing and manufacturing equipment, pipelines, instruments and control devices of the icing wind tunnel height simulation system;
3) determining technical requirements of all relevant equipment foundation civil engineering;
4) the method comprises the following steps of (1) installing, on-site manufacturing and debugging of an icing wind tunnel height simulation system, and wind tunnel operation joint debugging;
the built icing wind tunnel height simulation system comprises: the air suction main pipeline is connected with the icing wind tunnel, and the PLC is used for controlling the air suction main pipeline; the suction main pipeline is connected with a vacuum pump set, the vacuum pump set is composed of a roots pump set and a water ring pump set, the roots pump set comprises a plurality of roots pumps, and the water ring pump set comprises a plurality of water ring pumps; each roots pump is respectively provided with a soft starter, and each water ring pump is respectively provided with a frequency converter; the PLC controller comprises a power supply module, a main CPU, a communication module, an analog input end, a digital output end and a digital input end; each soft starter and each frequency converter are connected with a communication module of the PLC through a field bus;
the PLC controls the water ring pump set to work independently, and can simulate the control of the vacuum pressure in the wind tunnel with the height less than 7000 m;
the PLC controls the Roots pump set and the water ring pump set to work together, and can simulate the control of the vacuum pressure in the wind tunnel with the height of 7000m to 20000 m.
2. The large icing wind tunnel height simulation method according to claim 1, wherein each roots pump is respectively connected with a cooler, the cooler is supplied with water by a water tank, the water tank is provided with a cooling water tower, the water tank pumps water to the cooling water tower through a water pump, and the cooling water tower is provided with a fan; the water pump and the fan are connected with the motor control box; the motor control box is respectively connected with the analog input end, the digital output end and the digital input end of the PLC.
3. The large icing wind tunnel height simulation method according to claim 2, wherein a pneumatic butterfly valve, a pneumatic regulating valve, a pressure transmitter and a temperature transmitter are further arranged on the main air suction pipeline; the pneumatic butterfly valve is positioned between the Roots pump set and the water ring pump set; the pneumatic regulating valve, the pressure transmitter and the temperature transmitter are all positioned between the icing wind tunnel and the vacuum pump set; the pneumatic control valve and the pneumatic butterfly valve are respectively provided with a pneumatic valve positioner; and each pneumatic valve positioner, the pressure transmitter and the temperature transmitter are connected with a communication module of the PLC through a field bus.
4. The large icing wind tunnel height simulation method according to claim 3, wherein the PLC is further connected with a vacuum pump plant monitoring station.
5. The large icing wind tunnel height simulation method according to claim 4, wherein the PLC is further connected with an icing wind tunnel core control upper computer through an optical fiber Ethernet.
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| CN201911041914.1A CN110608867A (en) | 2019-10-30 | 2019-10-30 | Large icing wind tunnel height simulation method |
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| CN201911041914.1A CN110608867A (en) | 2019-10-30 | 2019-10-30 | Large icing wind tunnel height simulation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679703A (en) * | 2020-07-07 | 2020-09-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Temperature protection control system of centrifugal vacuum pump and control method thereof |
| CN113358319A (en) * | 2021-08-09 | 2021-09-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Air inlet simulation system and method |
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| CN113358319A (en) * | 2021-08-09 | 2021-09-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Air inlet simulation system and method |
| CN113358319B (en) * | 2021-08-09 | 2021-11-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Air inlet simulation system and method |
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