CN116499691A - High-pressure isobutane safe discharge device for hypersonic high-temperature wind tunnel - Google Patents
High-pressure isobutane safe discharge device for hypersonic high-temperature wind tunnel Download PDFInfo
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- CN116499691A CN116499691A CN202310778022.XA CN202310778022A CN116499691A CN 116499691 A CN116499691 A CN 116499691A CN 202310778022 A CN202310778022 A CN 202310778022A CN 116499691 A CN116499691 A CN 116499691A
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- wind tunnel
- hypersonic
- air outlet
- pressure
- temperature wind
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- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000001282 iso-butane Substances 0.000 title claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 239000002828 fuel tank Substances 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000011156 evaluation Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 17
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention belongs to the technical field of hypersonic high-temperature wind tunnel tests, and discloses a high-pressure isobutane safe discharge device for a hypersonic high-temperature wind tunnel. The high-pressure isobutane safe discharge device is a liquid separating tank, the front end and the rear end of the top surface of the liquid separating tank are respectively provided with an air inlet pipe orifice and an air outlet pipe orifice, the air inlet pipe orifice is connected with a high-pressure fuel tank outlet of the hypersonic high-temperature wind tunnel through an air inlet pipeline, the air outlet pipe orifice is connected with a vertical air outlet pipeline, an air outlet which is higher than the top surface of the hypersonic high-temperature wind tunnel is arranged on the air outlet pipeline, and the direction of the air outlet is the same as the average wind direction of the local year. The high-pressure isobutane safety discharge device can realize reliable and safe discharge of high-pressure isobutane fuel for the wind tunnel, and can successfully assist the combustion heating type hypersonic high-temperature wind tunnel to finish hypersonic aircraft combined power performance, organism propulsion integrated performance and large-size thermal protection system performance evaluation and identification ground assessment test.
Description
Technical Field
The invention belongs to the technical field of hypersonic high-temperature wind tunnel tests, and particularly relates to a high-pressure isobutane safe discharge device for a hypersonic high-temperature wind tunnel.
Background
The hypersonic high-temperature wind tunnel belongs to a combustion heating type wind tunnel, has the characteristics of large thermal power (reaching gigawatt level), uniform area width of a flow field, excellent quality of the flow field (minute level), long running time and the like, can simulate parameters such as flight Mach number, dynamic pressure, total enthalpy, oxygen components and the like, and is one of important ground simulation test equipment for developing hypersonic aircraft scramjet engines, turbine ramjet engines, rocket ramjet engines and the like, hypersonic aircraft body propulsion integrated performance test and large-size thermal protection system performance evaluation and assessment.
The hypersonic high-temperature wind tunnel adopts three components of fuel, liquid oxygen and air to mix and burn, high-temperature high-pressure airflow is formed, expansion and acceleration are carried out through a spray pipe, hypersonic jet flow is formed, and performance test and assessment are carried out on an engine, an integrated aircraft or a thermal protection component and the like which are arranged at the outlet of the spray pipe.
Isobutane belongs to inflammable and explosive fuel, has the characteristics of high heat value, low ignition energy, small pollution of a combustion product flow field and the like, and is one of important fuels of a large combustion heating hypersonic high-temperature wind tunnel. The high-pressure isobutane fuel supply system is one of key subsystems of a large combustion heating hypersonic high-temperature wind tunnel. The working flow of the high-pressure isobutane fuel supply system is that the isobutane stored in the high-pressure storage tank is extruded to tens of megapascals by utilizing high-pressure nitrogen before the test, the high-pressure isobutane fuel is supplied to the hypersonic high-temperature wind tunnel through the pipeline system during the test, and the pressure of the high-pressure isobutane fuel in the high-pressure storage tank is released to be close to the saturated vapor pressure of the isobutane after the test. The safety emission of the high-pressure isobutane fuel after the test seriously affects the safety of wind tunnel equipment and personnel safety in wind tunnel areas.
The conventional discharging device is mainly characterized in that a section of pipeline which is communicated with the atmosphere is arranged at a discharging port at the top of the high-pressure storage tank. This discharge mode has mainly the following problems: when the high-pressure air is discharged, the isobutane liquid entrained by the air flow is discharged into the atmosphere, so that the isobutane liquid is not completely vaporized or unevenly diffused, and the isobutane gas heavier than the air is extremely easy to gather in underground ditches or ground low-lying positions, so that key potential safety hazards are caused or safety accidents are caused.
Currently, there is a need to develop a high pressure isobutane safe discharge device for hypersonic high temperature wind tunnels.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-pressure isobutane safety discharge device for a hypersonic high-temperature wind tunnel, which is used for overcoming the defects of the prior art.
The invention relates to a high-pressure isobutane safe discharge device for a hypersonic high-temperature wind tunnel, which is characterized in that the high-pressure isobutane safe discharge device is a liquid separating tank, the front end and the rear end of the top surface of the liquid separating tank are respectively provided with an air inlet pipe orifice and an air outlet pipe orifice, the air inlet pipe orifice is connected with a high-pressure fuel tank outlet of the hypersonic high-temperature wind tunnel through an air inlet pipeline, the air outlet pipe orifice is connected with a vertical air outlet pipeline, an air outlet higher than the top surface of the hypersonic high-temperature wind tunnel is arranged on the air outlet pipeline, and the orientation of the air outlet is the same as the average wind direction of the local year.
Further, the air outlet is higher than the top surface of the hypersonic high-temperature wind tunnel by at least 3 meters.
Further, the bottom of the liquid separating tank is provided with a liquid accumulating pipe, and the liquid accumulating pipe is far away from the air inlet pipe orifice and near the air outlet pipe orifice; the liquid separating tank is obliquely arranged for 3-5 degrees, and the slope faces the effusion pipe.
Further, a liquid level monitor and a pressure monitor meter are arranged on the liquid separating tank.
Further, the diameter of the air outlet pipeline is larger than that of the air inlet pipeline.
According to the high-pressure isobutane safe discharge device for the hypersonic high-temperature wind tunnel, the liquid separation tank is arranged at the air outlet of the high-pressure fuel tank, so that isobutane liquid entrained in the high-speed nitrogen gas discharging process is separated and collected; the air inlet pipe orifice and the air outlet pipe orifice are respectively arranged at two ends of the top of the liquid separating tank, the residence time of high-speed nitrogen flow in the liquid separating tank is increased, so that the volume of the isobutane liquid exists in the liquid separating tank and is not discharged to the atmosphere together with the high-speed nitrogen, and after the nitrogen discharge is finished, the isobutane liquid in the liquid separating tank is naturally volatilized and is discharged to the atmosphere through an air outlet at a high position.
The high-pressure isobutane safe discharge device for the hypersonic high-temperature wind tunnel can realize reliable and safe discharge of high-pressure isobutane fuel for the wind tunnel.
Drawings
Fig. 1 is a schematic structural view of a high-pressure isobutane safety discharge apparatus for hypersonic high-temperature wind tunnel according to the present invention.
In the figure, 1. A liquid separating tank; 2. an air intake duct; 3. an air outlet pipe; 4. and an air outlet.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
Example 1:
as shown in fig. 1, the high-pressure isobutane medium safety discharge apparatus of this embodiment includes a liquid separation tank 1, an air inlet pipe 2, an air outlet pipe 3, and an air outlet 4. The specific parameters of each component are as follows:
liquid separating tank 1: the pressure is 1.0MPa, the volume is 8m, and the stainless steel is 304;
intake duct 2: DN50, PN420, stainless steel 304;
and an air outlet pipeline 3: DN200, PN10, stainless steel 304;
air outlet 4: t-shape.
Where DN represents the pipeline specification and PN represents the pressure rating.
According to the high-pressure isobutane safety discharge device for the hypersonic high-temperature wind tunnel, isobutane liquid is separated and discharged by the liquid separating tank 1, the flow rate of nitrogen gas flow flowing through the inner cavity of the liquid separating tank 1 is reduced by the large-volume liquid separating tank 1, the air inlet pipeline 2 and the air outlet pipeline 3 are distributed at the front end and the rear end of the top of the liquid separating tank 1, residence time of the nitrogen gas flow in the liquid separating tank 1 is prolonged, and gas-liquid separation efficiency of the nitrogen gas flow and the isobutane liquid is improved. The separated isobutane liquid flows to a liquid accumulation pipe close to the air outlet 4 through the slope installation of the liquid separation tank 1, so that the secondary entrainment of the isobutane liquid by the nitrogen flow is prevented from being discharged into the atmosphere; the large-diameter air outlet pipeline 3 is vertically arranged, so that the nitrogen air flow speed is reduced again, the diffusion time of the isobutane liquid is prolonged, and the diffusion sufficiency is improved; after the nitrogen gas flow is discharged, the isobutane liquid in the liquid separating tank 1 volatilizes naturally, and is discharged to the atmosphere through the air outlet 4 at a high position, so that the danger caused by aggregation of the isobutane liquid at a low-lying position is prevented, and the system safety of the hypersonic high-temperature wind tunnel is further improved.
The high-pressure isobutane safety discharge device for the hypersonic high-temperature wind tunnel is successfully applied to a high-pressure isobutane fuel system of a hypersonic high-temperature wind tunnel of a hypersonic high-speed research institute of China aerodynamic research and development center, and successfully assists the combustion heating hypersonic high-temperature wind tunnel to finish a ground assessment test of the combined dynamic performance, the body propulsion integrated performance and the large-size heat protection system performance of a hypersonic aircraft.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention disclosed in the embodiments of the present invention should be covered by the present invention.
Claims (5)
1. The high-pressure isobutane safe discharge device for the hypersonic high-temperature wind tunnel is characterized in that the high-pressure isobutane safe discharge device is a liquid separating tank (1), air inlet pipe orifices and air outlet pipe orifices are respectively arranged at the front end and the rear end of the top surface of the liquid separating tank (1), the air inlet pipe orifices are connected with a high-pressure fuel tank outlet of the hypersonic high-temperature wind tunnel through an air inlet pipeline (2), the air outlet pipe orifices are connected with a vertical air outlet pipeline (3), an air outlet (4) higher than the top surface of the hypersonic high-temperature wind tunnel is arranged on the air outlet pipeline (3), and the direction of the air outlet (4) is the same as the average wind direction of the local year.
2. The high-pressure isobutane safe discharge apparatus for hypersonic high temperature wind tunnel according to claim 1, wherein the air outlet (4) is higher than the top surface of hypersonic high temperature wind tunnel by at least 3 meters.
3. The high-pressure isobutane safe discharge apparatus for hypersonic high temperature wind tunnel according to claim 1, wherein the bottom of the liquid separating tank (1) is provided with a liquid accumulating pipe, the liquid accumulating pipe is far away from the air inlet pipe orifice and near the air outlet pipe orifice; the liquid separating tank (1) is installed in an inclined way of 3-5 degrees, and the slope faces to the effusion pipe.
4. The high-pressure isobutane safety discharge apparatus for hypersonic high-temperature wind tunnel according to claim 1, wherein the liquid level monitor and the pressure monitor are arranged on the liquid separating tank (1).
5. The high-pressure isobutane safe discharge apparatus for hypersonic high temperature wind tunnel according to claim 1, wherein the diameter of the air outlet pipeline (3) is larger than the diameter of the air inlet pipeline (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310778022.XA CN116499691A (en) | 2023-06-29 | 2023-06-29 | High-pressure isobutane safe discharge device for hypersonic high-temperature wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310778022.XA CN116499691A (en) | 2023-06-29 | 2023-06-29 | High-pressure isobutane safe discharge device for hypersonic high-temperature wind tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN116499691A true CN116499691A (en) | 2023-07-28 |
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| CN202310778022.XA Pending CN116499691A (en) | 2023-06-29 | 2023-06-29 | High-pressure isobutane safe discharge device for hypersonic high-temperature wind tunnel |
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| CN104961109A (en) * | 2015-05-21 | 2015-10-07 | 李远明 | Low-temperature wind tunnel nitrogen recovery device, and recovery method |
| US20190265125A1 (en) * | 2018-02-23 | 2019-08-29 | Global Reach Aerospace LLC | Large test area compressed air wind tunnel |
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| CN217795342U (en) * | 2022-07-08 | 2022-11-15 | 杭州盛大高科技机电有限公司 | Efficient gas preparation device |
| CN115596897A (en) * | 2022-11-23 | 2023-01-13 | 中国空气动力研究与发展中心超高速空气动力研究所（Cn） | Liquid oxygen supply pipeline for hypersonic high-temperature wind tunnel and precooling method thereof |
| CN115654357A (en) * | 2022-12-08 | 2023-01-31 | 中国空气动力研究与发展中心超高速空气动力研究所 | Hypersonic high-temperature wind tunnel high-pressure liquid oxygen storage tank with liquid nitrogen jacket and use method thereof |
| CN115888310A (en) * | 2022-06-16 | 2023-04-04 | 广东卡沃罗氢科技有限公司 | Hydrogen purifier |
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2023
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| US20190265125A1 (en) * | 2018-02-23 | 2019-08-29 | Global Reach Aerospace LLC | Large test area compressed air wind tunnel |
| CN113236961A (en) * | 2021-04-15 | 2021-08-10 | 招商局重工(深圳)有限公司 | LPG buffering release tank and control system |
| CN115888310A (en) * | 2022-06-16 | 2023-04-04 | 广东卡沃罗氢科技有限公司 | Hydrogen purifier |
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