CN105403378A - Method and apparatus for improving air storage type wind tunnel - Google Patents
Method and apparatus for improving air storage type wind tunnel Download PDFInfo
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- CN105403378A CN105403378A CN201510858670.1A CN201510858670A CN105403378A CN 105403378 A CN105403378 A CN 105403378A CN 201510858670 A CN201510858670 A CN 201510858670A CN 105403378 A CN105403378 A CN 105403378A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention, which belongs to the technical field of the wind tunnel, particularly relates to a method and apparatus for improving an air storage type wind tunnel. The method comprises: low-pressure liquid air or low-pressure liquid nitrogen absorbs an environment heat source by a vaporizer and and is converted into normal-temperature high-pressure gas by an environment heat source; a compressed gas tank is filled with one part of the normal-temperature high-pressure gas and the other part of the normal-temperature high-pressure gas drives an expansion machine to convert high-pressure potential energy into mechanical energy so as to drive an air compressor; the expansion machine discharges exhaust gas for cooling the air compressor; normal-temperature high-pressure gas after boosting by the air compressor is inputted into the air compressor, high-pressure gas generated by compression by the air compressor and the exhaust gas discharged by a cooling outlet of the air compressor are mixed and then mixed gas enters the compressed gas tank; and compressed gas from the compressed gas tank enters a wind tunnel pipe at a high speed through a wind tunnel jet head to form a wind tunnel airflow. According to the invention, the vaporizer, the air amplifier, and the expansion machine are used for the wind tunnel field; the environmental thermal energy is utilized fully; the electric energy consumption is substantially reduced; rapid and continuous large-airflow air supply is realized; the system is simplified; the energy consumption is reduced; the efficiency is high; and the cost is low.
Description
Technical field
The invention belongs to Wind Tunnel Technique field, be specifically related to a kind of method and the device thereof that improve air storing type wind-tunnel.
Background technology
Wind-tunnel and wind tunnel laboratory, produce in artificial mode and control air-flow, be used for the mobility status of simulated flight device or entity ambient gas, and air-flow can be measured to the action effect of entity and a kind of pipe-like experimental facilities observing physical phenomenon, it is an indispensable ingredient in aircraft development work.It not only plays an important role in the research and development of aerospace engineering, along with the development of industrial aerodynamics, indispensable especially in fields such as communications and transportation, building construction, Wind Power Utilizations.
The drive system of wind-tunnel has two classes, and a class is continuous wind tunnel, by controllable electric unit and by its drive fan or Axial Flow Compressor form.Fan rotates or compressor rotor rotates the flowing making stream pressure increase to maintain stable in pipeline.Change rotating speed or the blade angle of fan, or change the damping to air-flow, the speed of adjustable air-flow.Another kind of is air storing type wind-tunnel, in advance supercharging air is stored in gas tank with low power pneumatic plant, or with vacuum pump, the vacuum tank be connected with wind-tunnel outlet conduit is vacuumized, Quick open valve door during experiment, make pressure-air directly enter hole body by injector or by vacuum tank by air intake hole body, thus have air blowing, injection, air-breathing and their various forms of mutually combining.
Current air storing type wind-tunnel generally adopts pneumatic plant to be first compressed to by air in large-scale gas bomb, concentrates release to obtain airflow during test.During pneumatic plant work, power consumption is huge, and from tens kilowatts to several ten thousand kilowatts not etc., and the energy conversion efficiency that pneumatic plant is calmed the anger is very low, and between 10 ~ 20%, most of energy becomes heat loss to environment.Tradition air storing type wind-tunnel energy consumption is large, efficiency is low, stream time is short, and a unstable bulk loads is large to electrical network pressure simultaneously.
Summary of the invention
For the deficiency that prior art exists, the invention provides and make full use of environment thermal energy, energy-saving and emission-reduction, significantly reduce the consumption to electric energy, can rapidly, continuously air flow air feed, simplification system, reduce energy consumption, the method for the improvement air storing type wind-tunnel that efficiency is high, cost is low and device thereof.
To achieve these goals, the present invention realizes by the following technical solutions:
Improve a method for air storing type wind-tunnel, it comprises the following steps:
Low-pressure liquid air or low-pressure liquid nitrogen are pumped into gasifier absorbing environmental thermal source through high pressure low temperature and are converted into normal temperature high voltage gas;
A described normal temperature high voltage gas part is filled with compression gas tank, and another part drives decompressor to be that mechanical energy drives air compressor machine by high pressure potential energy;
Ambient air in environment is formed with the air-flow input air compressor machine of certain pressure and flow velocity through air amplifier supercharging, and described air compressor machine compresses rear output gases at high pressure to the band pressure of input and the gas of flow velocity and the described decompressor weary gas produced afterwards that does work is mixed into described compression gas tank;
The pressure gas of described compression gas tank enters at a high speed wind-tunnel pipe through wind-tunnel jet thrust and forms wind-tunnel working air current.
A kind of above-mentioned method improving air storing type wind-tunnel, the low-pressure liquid air described in it or the pressure limit of low-pressure liquid nitrogen are 0.1-0.5MPa.
A kind of above-mentioned method improving air storing type wind-tunnel, the pressure limit of the normal temperature high voltage gas described in it is 0.8-60Mpa.
A kind of above-mentioned method improving air storing type wind-tunnel, the compression gas tank described in the gases at high pressure Mixed design exported with described air compressor machine after the weary gas that the decompressor described in it produces introduces described air compressor machine circulating cooling.
A kind of above-mentioned method improving air storing type wind-tunnel, the thermal source described in it comprises air-source, water source, soil source, geothermal source in environment.
A kind of device improving air storing type wind-tunnel, comprise the air compressor machine be connected successively, compression gas tank, wind-tunnel pipe and connecting line thereof and valve, it also comprises liquefied air or liquid nitrogen storage tank, high-pressure cryogenic pumps, gasifier, decompressor, air amplifier, the air compressor machine described in output shaft connection of described decompressor, liquefied air described in described high pressure low temperature pump inlet connects or liquid nitrogen storage tank, gasifier described in its outlet connects, described gasifier exit is divided into two-way by pipeline, one tunnel is connected with described compression gas tank through too fast gas filling valve, another road is connected with the import of described decompressor, an import of the air amplifier described in the ambient air in environment is inputted by pipeline, another import of described air amplifier is connected with described compression gas tank, the air compressor machine import described in outlet connection of described air amplifier, the compressed air outlet of described air compressor machine is connected with described compression gas tank by pressurized air input pipe with the weary gas outlet of described decompressor, the wind-tunnel jet thrust that the outlet of described compression gas tank is connected to wind-tunnel entrance by work tracheae forms tunnel airstream.
Above-mentioned a kind of device improving air storing type wind-tunnel, the air amplifier described in it is single-stage or plural serial stage structure.
Above-mentioned a kind of device improving air storing type wind-tunnel, the weary gas outlet of decompressor described in it is connected with cooling system of air compressor entrance, and described cooling system of air compressor outlet is incorporated to after pressurized air input pipe with the compressed air outlet of described air compressor machine and is connected with described compressed air tank.
Above-mentioned a kind of device improving air storing type wind-tunnel, the decompressor described in it is vane type of turbine, piston cylinder type, screw, vortex type structure.
Above-mentioned a kind of device improving air storing type wind-tunnel, the air compressor machine described in it is vane type of turbine, piston cylinder type, screw, vortex type structure.
Beneficial effect:
Gasifier, air amplifier, decompressor are used for wind-tunnel field by the present invention, without the need to huge energy resource consumption, adopt liquefied air absorbing environmental thermal source to expand, gasify, obtain gases at high pressure, save great amount of cost.Utilize Koln to reach effect principle and arrange air amplifier, form the high flow capacity pressurized air of 10 ~ 100 times with a small amount of atmospheric air, volume is little, device is simple, air demand is large, utilizes the low-temperature characteristics of weary gas to improve performance of air compressor, improves air compressor machine usefulness further.Utilize decompressor partial heat energy to be converted into mechanical energy to export and drive air compressor machine, and export cold further, power consumption less, noiseless, cost be low.Adopt directly to fill soon to put and start soon, can fill compression gas tank pressure by fast repairing, realize continuous air flow air feed, efficiency is high.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the schematic diagram of apparatus of the present invention.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
With reference to Fig. 1, the present invention includes the liquefied air storage tank 1, high-pressure cryogenic pumps 2, gasifier 3, compressed air tank 4, decompressor 5, air compressor machine 6, air amplifier 9, the wind-tunnel pipe 23 that are connected successively, the output shaft of decompressor 5 connects driving air compressor machine 6.The outlet of liquefied air storage tank 1 connects the import of high-pressure cryogenic pumps 2 by low-pressure liquid air hose 11, the outlet of high-pressure cryogenic pumps 2 connects gasifier 3 by high-pressure liquid air hose 12, gasifier 3 exports and is divided into two-way by high-pressure air tube 13, one tunnel connects straight gas-filled tube 15 and is connected with an import of compressed air tank 4 through too fast gas filling valve 7, driving tracheae 14 of separately leading up to connects the air intake opening of decompressor 5, the weary gas produced after decompressor 5 does work is drawn by the blast pipe 16 that expands and is connected air compressor machine cold gas entrance, the compressed air inlet duct 18 of gas of being discharged by cold gas vent pipe 24 after circulation enters compressed air tank 4.The weary gas produced after utilizing decompressor to do work cools to air compressor machine, under ensure that pneumatics function is operated in lower temperature, improves air compressor machine usefulness.Ambient air in environment inputs an import of the air amplifier 9 of single-stage by pipeline 10, another import of air amplifier 9 is connected with the outlet of compressed air tank 4 by driving tracheae 20, for introducing a small amount of pressurized air, the outlet of air amplifier 9 is connected by the air intake opening of pressurizing air tracheae 19 with air compressor machine 6, the gas outlet of air compressor machine 6 to be connected with pressurized air input pipe 18 by compressed air hose 17 and compressed air delivery is entered compressed air tank 4, the outlet of compressed air tank 4 arranges work air valve 8, work air valve 8 is connected to the wind-tunnel jet thrust 22 of wind-tunnel 23 porch by work tracheae 21.
As further improvement, air amplifier also can be plural serial stage structure.
According to the difference of Applicable media, work purposes, goal pressure, decompressor can be the decompressor of vane type of turbine, piston cylinder type, screw or vortex type structure, and the air compressor machine being mated use also can be vane type of turbine, piston cylinder type, screw or vortex type structure air compressor machine.
When the present invention is used for liquid nitrogen gasification, liquefied air storage tank changes liquid nitrogen storage tank into.
Method of work:
Liquefied air storage tank 1 is 0.1-0.5MPa low-pressure liquid air for storing the pressure of purchase, the low-pressure liquid air of liquefied air storage tank 1 is conveyed into gasifier 3 by high-pressure cryogenic pumps 2, the low-pressure liquid air of 0.1-0.5MPa is converted into the normal temperature high voltage gas of 0.8-60Mpa by the thermal source that gasifier 3 absorbs surrounding outer environment, and thermal source comprises air-source, water source, soil source, geothermal source in environment.A gasifier 3 gases at high pressure part is out filled with compressed air tank 4 by straight gas-filled tube 15 through too fast gas filling valve 7, the pressure of compressed air tank 4 is filled for fast repairing, the air intake opening of another part by driving tracheae 14 to connect decompressor 5, for driving decompressor 5, the weary gas that decompressor 5 produces is drawn by the blast pipe 16 that expands and is connected air compressor machine cold gas entrance, and the compressed air inlet duct 18 of gas of being discharged by cold gas vent pipe 24 after circulation enters compressed air tank 4.The weary gas produced after utilizing decompressor to do work cools to air compressor machine, under ensure that pneumatics function is operated in lower temperature, improves air compressor machine usefulness.Ambient air in environment is by an import of pipeline 10 input air amplifier 9, another import of air amplifier 9 is connected with the outlet of compressed air tank 4 by driving tracheae 20, for introducing a small amount of pressurized air, effect is reached by Koln, the gas that atmospheric air supercharging is formed with certain pressure and flow velocity is delivered to air compressor machine 6 by supercharging tracheae 19, after being mixed by the weary gas that obtained pressurized air and air compressor machine 6 exhausr port are discharged after the further pressurized air of air compressor machine 6, together sends compressed air tank 4 to.The outlet of compressed air tank 4 arranges work air valve 8, and work air valve 8 is connected to the wind-tunnel jet thrust 22 of wind-tunnel 23 porch by work tracheae 21.Open work air valve 8, by the pressurized air release in compressed air tank 4, under the amplification of wind-tunnel jet thrust 22, big-flow high-pressure air-flow can be produced, form wind-tunnel working air current.
As further improvement, also can use low-pressure liquid nitrogen storage in low-pressure liquid nitrogen pot, form gases at high pressure through gasification.
Gasifier, air amplifier, decompressor are used for wind-tunnel field by the present invention, without the need to huge energy resource consumption, adopt liquefied air absorbing environmental thermal source to expand, gasify, obtain gases at high pressure, save great amount of cost.Utilize Koln to reach effect principle and arrange air amplifier, form the high flow capacity pressurized air of 10 ~ 100 times with a small amount of atmospheric air, volume is little, device is simple, air demand is large.Utilize decompressor partial heat energy to be converted into mechanical energy to export and drive air compressor machine, and export cold further, power consumption less, noiseless, cost be low.Adopt directly to fill soon to put and start soon, can fill compression gas tank pressure by fast repairing, realize continuous air flow air feed, efficiency is high.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. improve a method for air storing type wind-tunnel, it is characterized in that, comprise the following steps:
Low-pressure liquid air or low-pressure liquid nitrogen are pumped into gasifier absorbing environmental thermal source through high pressure low temperature and are converted into normal temperature high voltage gas;
A described normal temperature high voltage gas part is filled with compression gas tank, and another part drives decompressor to be that mechanical energy drives air compressor machine by high pressure potential energy;
Ambient air in environment is formed with the air-flow input air compressor machine of certain pressure and flow velocity through air amplifier supercharging, and the gases at high pressure that the gas of described air compressor machine to input compresses rear output and the described decompressor weary gas produced afterwards that does work is mixed into described compression gas tank;
The pressure gas of described compression gas tank enters at a high speed wind-tunnel pipe through wind-tunnel jet thrust and forms wind-tunnel working air current.
2. a kind of method improving air storing type wind-tunnel according to claim 1, is characterized in that, described low-pressure liquid air or the pressure limit of low-pressure liquid nitrogen are 0.1-0.5MPa.
3. a kind of method improving air storing type wind-tunnel according to claim 1, is characterized in that, the pressure limit of described normal temperature high voltage gas is 0.8-60Mpa.
4. a kind of method improving air storing type wind-tunnel according to claim 1, is characterized in that, the compression gas tank described in the gases at high pressure Mixed design exported with described air compressor machine after the weary gas that described decompressor produces introduces described air compressor machine circulating cooling.
5. a kind of method improving air storing type wind-tunnel according to claim 1, is characterized in that, described thermal source comprises air-source, water source, soil source, geothermal source in environment.
6. the device of air storing type wind-tunnel is improved according to claim 1-5 any one, comprise the air compressor machine be connected successively, compression gas tank, wind-tunnel pipe and connecting line thereof and valve, it is characterized in that, also comprise liquefied air or liquid nitrogen storage tank, high-pressure cryogenic pumps, gasifier, decompressor, air amplifier, the air compressor machine described in output shaft connection of described decompressor, liquefied air described in described high pressure low temperature pump inlet connects or liquid nitrogen storage tank, gasifier described in its outlet connects, a described gasifier exit part is connected with described compression gas tank through too fast gas filling valve, another part is connected with the import of described decompressor, the weary gas of described expander outlet is connected with described compression gas tank by pressurized air input pipe, ambient air in an import JA(junction ambient) of described air amplifier, another import is connected with described compression gas tank, the air compressor machine import described in outlet connection of described air amplifier, the compressed air outlet of described air compressor machine is connected with described compression gas tank by pressurized air input pipe, the wind-tunnel jet thrust that the outlet of described compression gas tank is connected to wind-tunnel entrance by work tracheae forms tunnel airstream.
7. a kind of device improving air storing type wind-tunnel according to claim 6, is characterized in that, described air amplifier is single-stage or plural serial stage structure.
8. a kind of device improving air storing type wind-tunnel according to claim 6, it is characterized in that, the weary gas outlet of described decompressor is connected with cooling system of air compressor entrance, and described cooling system of air compressor outlet is incorporated to after pressurized air input pipe with the compressed air outlet of described air compressor machine and is connected with described compressed air tank.
9. a kind of device improving air storing type wind-tunnel according to claim 6, is characterized in that, described decompressor is vane type of turbine, piston cylinder type, screw, vortex type structure.
10. a kind of device improving air storing type wind-tunnel according to claim 6, is characterized in that, described air compressor machine is vane type of turbine, piston cylinder type, screw, vortex type structure.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107655656A (en) * | 2017-11-01 | 2018-02-02 | 广东电网有限责任公司电力科学研究院 | A kind of downburst analogue means |
| CN108001665A (en) * | 2017-12-08 | 2018-05-08 | 南京航空航天大学 | A kind of aerostatics air-sac efficient aerating device and its method of work |
| CN110411701A (en) * | 2019-06-21 | 2019-11-05 | 中国人民解放军国防科技大学 | Nuclear power hypersonic wind tunnel |
| CN112697384A (en) * | 2020-12-24 | 2021-04-23 | 中国人民解放军国防科技大学 | Large-flow high-pressure air continuous production system |
| CN114166459A (en) * | 2022-02-11 | 2022-03-11 | 中国空气动力研究与发展中心计算空气动力研究所 | Wind tunnel group medium-voltage scheduling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Effective date of registration: 20191209 Address after: The new town Pinghu venture Road Jiaxing city Zhejiang province 314211 City No. 158 Patentee after: Pinghu Bo Bo Machinery Manufacturing Co., Ltd. Address before: 1507, building 8, xinkexiangyuan, South Road, Zhongguancun Academy of Sciences, Haidian District, Beijing 100190 Patentee before: Gou Zhongwu |