CN110749413A - Large icing wind tunnel height analog control system - Google Patents
Large icing wind tunnel height analog control system Download PDFInfo
- Publication number
- CN110749413A CN110749413A CN201911041931.5A CN201911041931A CN110749413A CN 110749413 A CN110749413 A CN 110749413A CN 201911041931 A CN201911041931 A CN 201911041931A CN 110749413 A CN110749413 A CN 110749413A
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- wind tunnel
- plc
- pump set
- icing wind
- control 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
- 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
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
Abstract
The invention discloses a large icing wind tunnel height analog control system, comprising: 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 main suction pipeline is connected with a vacuum pump set, and the vacuum pump set consists of a roots pump set and a water ring pump set; each roots pump is respectively provided with a soft starter, and each water ring pump is respectively provided with a frequency converter; each soft starter and each frequency converter are connected with the PLC; 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. The large icing wind tunnel height simulation control system can simulate the control of the vacuum pressure in the 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 control system.
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 control system 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 above object, the technical scheme of the present invention is to design a large icing wind tunnel height simulation control system, which 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; each soft starter and each frequency converter are connected with the PLC;
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; each pneumatic valve positioner, each pressure transmitter and each temperature transmitter are connected with the PLC;
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 connected with the PLC;
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 soft starter and each frequency converter are connected with a communication module of the PLC through a field bus.
Preferably, each pneumatic valve positioner, pressure transmitter and temperature transmitter are connected with the communication module of the PLC through a field bus.
Preferably, the motor control box is respectively connected with an analog input end, a digital output end and a digital input end of the PLC.
Preferably, the PLC controller further includes a main CPU.
Preferably, the PLC controller further includes a power module.
Preferably, the PLC controller is also connected with a vacuum pump plant monitoring station.
Preferably, the PLC is also connected with an icing wind tunnel core control upper computer.
Preferably, the PLC is connected with the icing wind tunnel core control upper computer through an optical fiber Ethernet.
The invention has the advantages and beneficial effects that: the large icing wind tunnel height simulation control system can simulate the control of vacuum pressure in a wind tunnel with the height not greater than 20000 m.
Drawings
FIG. 1 is a schematic of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. 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 control 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 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;
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; each soft starter and each frequency converter are connected with a communication module of the PLC through a field bus;
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; each pneumatic valve positioner, the pressure transmitter and the temperature transmitter are connected with a communication module of the PLC through a field bus;
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 an analog quantity input end, a digital quantity output end and a digital quantity input end of the PLC;
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).
The PLC is also connected with a vacuum pump plant monitoring station.
The PLC is also 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 (9)
1. Large-scale icing wind tunnel height analog control system, its characterized in that includes: 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; each soft starter and each frequency converter are connected with the PLC;
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; each pneumatic valve positioner, each pressure transmitter and each temperature transmitter are connected with the PLC;
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 connected with the PLC;
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 analog control system according to claim 1, wherein each soft starter and each frequency converter are connected with a communication module of the PLC through a field bus.
3. The large icing wind tunnel height simulation control system according to claim 2, wherein each pneumatic valve positioner, pressure transmitter and temperature transmitter are connected with a communication module of the PLC through a field bus.
4. The large icing wind tunnel height analog control system according to claim 3, wherein the motor control box is connected with an analog quantity input end, a digital quantity output end and a digital quantity input end of the PLC controller respectively.
5. The large icing wind tunnel height simulation control system according to claim 4, wherein the PLC controller further comprises a main CPU.
6. The large icing wind tunnel height analog control system according to claim 5, wherein the PLC controller further comprises a power module.
7. The large icing wind tunnel height simulation control system according to claim 6, wherein the PLC is further connected with a vacuum pump plant monitoring station.
8. The large icing wind tunnel height simulation control system according to claim 7, wherein the PLC is further connected with an icing wind tunnel core control upper computer.
9. The large icing wind tunnel height simulation control system according to claim 8, wherein the PLC is connected with an icing wind tunnel core control upper computer through an optical fiber Ethernet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911041931.5A CN110749413A (en) | 2019-10-30 | 2019-10-30 | Large icing wind tunnel height analog control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911041931.5A CN110749413A (en) | 2019-10-30 | 2019-10-30 | Large icing wind tunnel height analog control system |
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| CN110749413A true CN110749413A (en) | 2020-02-04 |
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| CN201911041931.5A Pending CN110749413A (en) | 2019-10-30 | 2019-10-30 | Large icing wind tunnel height analog control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929024A (en) * | 2020-09-27 | 2020-11-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel air intake and height simulation system and method |
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2019
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| CN103727036A (en) * | 2014-01-18 | 2014-04-16 | 淄博水环真空泵厂有限公司 | Precise adjustment system for vacuum degree of giant vacuum chamber |
| CN103727036B (en) * | 2014-01-18 | 2015-04-15 | 淄博水环真空泵厂有限公司 | Precise adjustment system for vacuum degree of giant vacuum chamber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929024A (en) * | 2020-09-27 | 2020-11-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel air intake and height simulation system and method |
| CN111929024B (en) * | 2020-09-27 | 2020-12-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel air intake and height simulation system and method |
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Application publication date: 20200204 |