CN113295372A - Ejector test high-pressure gas control device - Google Patents
Ejector test high-pressure gas control device Download PDFInfo
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- CN113295372A CN113295372A CN202110623209.3A CN202110623209A CN113295372A CN 113295372 A CN113295372 A CN 113295372A CN 202110623209 A CN202110623209 A CN 202110623209A CN 113295372 A CN113295372 A CN 113295372A
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- pressure gas
- flow
- supply pipeline
- pipeline
- air supply
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/03—Control of flow with auxiliary non-electric power
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a high-pressure gas control device for an ejector test, which comprises a sealing shell and two flow regulating cones, wherein a high-pressure gas main flow pipeline is arranged inside the sealing shell, an external high-pressure gas supply end is connected with the high-pressure gas main flow pipeline, the high-pressure gas main flow pipeline is respectively communicated with an outer culvert high-pressure gas supply pipeline and an inner culvert high-pressure gas supply pipeline, two flow regulating cones are respectively arranged at the intersection of the high-pressure gas main flow pipeline and the outer culvert high-pressure gas supply pipeline and the inner culvert high-pressure gas supply pipeline, the control end of each flow regulating cone is positioned outside the sealing shell, and the control end of each flow regulating cone is regulated, so that the throttling area of the regulating end of each regulating cone and the outer culvert high-pressure gas supply pipeline or the inner culvert high-pressure gas supply pipeline can be continuously changed, and the continuous regulation of high-pressure gas flow is realized. The device has the advantages of accurate flow distribution, small volume and high control precision, and can be placed inside the nacelle hanger of the air intake and exhaust test engine.
Description
Technical Field
The invention relates to a wind tunnel test device, in particular to a high-pressure gas control device for an ejector test.
Background
In order to improve economic benefits, civil aviation constantly improves the fuel economy of engine. The most effective way to improve the fuel economy of an engine is to increase the bypass ratio of the engine. The increase in engine bypass ratio necessarily increases the size of the engine, thereby increasing the adverse effect of the nacelle on the full engine aerodynamics. If the integrated engine-airplane design is not proper, the reduction of the oil consumption of the single engine per unit time can be offset by the interference of the engine nacelle, and the oil consumption rate of the engine can be higher than that of the original unmodified small bypass.
The ejector nacelle air inlet and exhaust wind tunnel test technology is widely applied to the current aviation technology, and the ejector nacelle is a device capable of simulating the air inlet and exhaust flowing states of the engine nacelle. When the device is started, the inlet flow and the outlet pressure ratio of the inner culvert and the outer culvert of the engine nacelle are simulated by controlling the flow of high-pressure gas supplied to the ejector. The influence rule of air inlet and exhaust of the engine nacelle on the aerodynamic characteristics of the whole airplane is researched through an airplane model with the ejector nacelle, and technical support is provided for the integrated design of the engine and the airplane.
The air inlet and the air outlet of the engine nacelle change the flow fields of the wing surface, the control plane and the fuselage surface of the airplane, and have great influence on the aerodynamic characteristics and the stability control characteristics of the airplane. With the emphasis of civil aircraft design units in China on the air intake and exhaust tests of the jet engine nacelle, the establishment of an advanced jet engine nacelle wind tunnel test technology is urgent. In order to meet the air inlet and exhaust test requirements of an engine nacelle developed by an airplane, a high-pressure gas control device for ejector test is needed.
Disclosure of Invention
Based on the defects, the invention aims to provide the ejector test high-pressure gas control device which can accurately and respectively control the inner culvert and the outer culvert of the ejector nacelle in the air inlet and outlet wind tunnel test of the ejector nacelle.
The technical scheme adopted by the invention is as follows: the utility model provides an experimental high-pressure gas controlling means of ejector, includes sealed casing to still include two flow control cones, sealed casing inside open have the high-pressure gas mainstream through pipeline, outside high-pressure gas air feed end with high-pressure gas mainstream through pipeline connect, high-pressure gas mainstream through pipeline communicate with outer culvert high pressure air supply pipeline and interior culvert high pressure air supply pipeline respectively, in the intersection of high-pressure gas mainstream through pipeline and outer culvert high pressure air supply pipeline and interior culvert high pressure air supply pipeline, install two flow control cones respectively, every the control end of flow control cone be located sealed casing outside, adjust the control end of flow control cone, can change the throttle area of adjusting the regulation end of adjusting the cone and outer culvert high pressure air supply pipeline or interior culvert high pressure air supply pipeline in succession to realize the continuous regulation of high pressure gas flow.
The invention also has the following technical characteristics:
1. the profile of the adjusting end of the adjusting cone is a gradually-changing curved surface.
2. And a flow scale is arranged at the control end of the flow adjusting cone.
3. And high-pressure sealing devices are respectively arranged at the joints of the outer part of the sealing shell, the outer culvert high-pressure air supply pipeline, the inner culvert high-pressure air supply pipeline and the two flow regulating cones.
The invention has the advantages and beneficial effects that: the invention converts one high-pressure air inlet pipeline into two pipelines, can respectively and accurately control the gas flow of the two pipelines, has the advantages of accurate flow distribution and high control precision, and can be placed in the nacelle hanger of the air inlet and exhaust test engine.
Drawings
FIG. 1 is a schematic diagram of the structure of the device;
FIG. 2 is a structural view of a flow regulating cone of the device;
the device comprises a sealing shell, a flow scale, a high-pressure gas main flow pipeline, an outer duct flow adjusting cone, an inner duct flow adjusting cone, a high-pressure outer duct gas supply pipeline, a high-pressure inner duct gas supply pipeline, a high-pressure sealing ring and a flow measuring device, wherein the sealing shell is 1, the flow scale is 2, the high-pressure gas main flow pipeline is 3, the outer duct flow adjusting cone is 5, the inner duct flow adjusting cone is 6, the outer duct high-pressure gas supply pipeline is 7, the inner duct high-pressure gas supply pipeline is 8, and the high-pressure sealing ring is 8.
Detailed Description
The invention is further illustrated by way of example in the accompanying drawings of the specification:
example 1
As shown in figure 1, the high-pressure gas control device for the ejector test comprises a sealed shell and two flow regulating cones, the sealing shell is internally provided with a high-pressure gas main flow pipeline, the external high-pressure gas supply end is connected with the high-pressure gas main flow pipeline, the main flow pipeline of the high-pressure gas is respectively communicated with the outer culvert high-pressure gas supply pipeline and the inner culvert high-pressure gas supply pipeline, two flow regulation cones are respectively installed at the intersection of a high-pressure gas main flow pipeline and a culvert high-pressure gas supply pipeline and an inner culvert high-pressure gas supply pipeline, and each flow regulation cone is positioned outside a sealing shell and is regulated at the control end, the regulating end of the regulating cone and the throttling area of the culvert high-pressure gas supply pipeline or the inner culvert high-pressure gas supply pipeline can be continuously changed, and therefore the continuous regulation of high-pressure gas flow is realized. The profile of the adjusting end of the adjusting cone is a gradually-changing curved surface. And a flow scale is arranged at the control end of the flow adjusting cone. And high-pressure sealing rings are respectively arranged at the joints of the outer part of the sealing shell, the outer culvert high-pressure air supply pipeline, the inner culvert high-pressure air supply pipeline and the two flow regulating cones.
The device can convert one high-pressure air inlet pipeline into two high-pressure air inlet pipelines and can respectively and accurately control the flow of the two high-pressure air inlet pipelines. Through the control end of the rotatory flow control awl of standard hexagonal spanner, the rotatory stroke of flow control awl is by the flow scale record, can calculate through the scale through the gas flow on the culvert and the outer high-pressure gas circulation passageway. In this embodiment, the maximum cross-sectional area of the high-pressure gas flow passage is 452.389mm2The maximum working pressure is 6MPa, the flow control range of high-pressure air supply is 0-3 kg/s, and the control accuracy is +/-1 g/s.
The invention has very important significance for the air inlet and exhaust wind tunnel test of the jet ejector nacelle and is key equipment for the air inlet and exhaust wind tunnel test of the jet ejector nacelle. The high-pressure gas flow control device is successfully applied to a certain half-mold ejector nacelle air inlet and exhaust wind tunnel test. This device is connected with the high-pressure air supply pipeline that aircraft model wing buries, and gaseous entering high-pressure gas mainstream through pipeline, then the culvert flow control that passes through the device awl and the culvert flow control awl, gets into the culvert high-pressure air supply pipeline and the culvert high-pressure air supply pipeline of nacelle, gets into ejector nacelle culvert inner nozzle and outer culvert nozzle entering wind-tunnel at last. The flow regulating cone can accurately control the high-pressure gas flow of the circulating pipeline, so that the gas flow and the pressure ratio of the inner culvert or the outer culvert of the short cabin of the ejector are controlled.
Claims (4)
1. The utility model provides an experimental high-pressure gas controlling means of ejector, includes sealed casing, its characterized in that: still include two flow control cones, sealed casing inside open have the high-pressure gas mainstream through pipeline, outside high-pressure gas air feed end with high-pressure gas mainstream through pipe connection, high-pressure gas mainstream through pipeline communicate with outer culvert high pressure air supply pipeline and interior high pressure air supply pipeline respectively, install two flow control cones, every respectively in the intersection of high-pressure gas mainstream through pipeline and outer culvert high pressure air supply pipeline and interior high pressure air supply pipeline the control end of flow control cone be located sealed casing outside, adjust the control end of flow control cone, can change the throttle area of adjusting the regulation end of adjusting the awl and outer culvert high pressure air supply pipeline or interior high pressure air supply pipeline in succession to realize the continuous control of high pressure gas flow.
2. The ejector test high-pressure gas control device according to claim 1, which is characterized in that: the profile of the adjusting end of the adjusting cone is a gradually-changing curved surface.
3. The ejector testing high-pressure gas control device according to claim 1 or 2, which is characterized in that: and a flow scale is arranged at the control end of the flow adjusting cone.
4. The ejector test high-pressure gas control device according to claim 3, wherein: and high-pressure sealing devices are respectively arranged at the joints of the outer part of the sealing shell, the outer culvert high-pressure air supply pipeline, the inner culvert high-pressure air supply pipeline and the two flow regulating cones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110623209.3A CN113295372A (en) | 2021-06-04 | 2021-06-04 | Ejector test high-pressure gas control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110623209.3A CN113295372A (en) | 2021-06-04 | 2021-06-04 | Ejector test high-pressure gas control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113295372A true CN113295372A (en) | 2021-08-24 |
Family
ID=77327106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110623209.3A Pending CN113295372A (en) | 2021-06-04 | 2021-06-04 | Ejector test high-pressure gas control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113295372A (en) |
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2021
- 2021-06-04 CN CN202110623209.3A patent/CN113295372A/en active Pending
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