阅读说明：本技术 模拟风洞 (Simulation wind tunnel ) 是由 付鹰波 于 2020-05-07 设计创作，主要内容包括：本发明是一种使用低密度气体在密封环境中模拟空气环境的风洞,可实现小模型模拟1：1比例的飞行器的气动环境,风洞整体体积小,造价低,能耗低,循环利用。(The invention relates to a wind tunnel for simulating an air environment in a sealed environment by using low-density gas, which can realize the simulation of a small model 1: the aerodynamic environment of the aircraft with the proportion of 1, the whole volume of the wind tunnel is small, the manufacturing cost is low, the energy consumption is low, and the cyclic utilization is realized.)

1. The utility model provides a simulation wind tunnel, including experimental area (A), hydrogen access & exit (B), air access & exit (C), air-out passageway (D), rectifier channel (E), refrigeration piece (F), heating piece (G), sealed slide rail (H), coloured heavy gas controller (I), coloured heavy gas pipe (J), gas transmission machinery (K), gas supply machinery (L1), air exhaust machinery (L2), gas-supply pipe (M1), speed reduction gas-supply pipe (M2), gas storage room (N), coloured heavy gas (O), keep off and flow board (P), flow distribution plate (Q), hydrogen (R), gate (S).

2. A simulated wind tunnel according to claim 1, wherein: hydrogen was used to simulate an air environment.

3. A method according to claim 1 for simulating an air environment using a low density gas in a simulation tunnel.

Technical Field

The invention relates to a wind tunnel for simulating a real environment, which is used for researching the aerodynamic principle of large and ultra-large aircrafts and takes a wind tunnel of a large passenger plane as an example.

Background

The existing wind tunnel has high construction cost and large volume, and is not easy to realize the pneumatic research of an ultra-large aircraft. The method is characterized in that: (figure 1) air with preset flow rate is input into a high-pressure high-speed air input port (1), a pneumatic model (2) participates in research, and air flows out from an air outlet (3).

Disclosure of Invention

The invention mainly changes the gas participating in the pneumatic research to realize the purpose of simulating the real environment.

According to the technical scheme provided by the invention, the simulation wind tunnel comprises: (attached drawing: figure 2) the middle of the sealed slide rail (H) is provided with a gate (S) which connects the experimental area (A) with the rectification channel (E) and the air outlet channel (D), the upper part of the experimental area (A) is provided with a hydrogen inlet and outlet (B), the lower part of the experimental area (A) is provided with an air inlet and outlet (C), the interior of the experimental area is provided with a colored heavy gas controller (I), a colored heavy gas guide pipe (J) is connected with the experimental area (A) and the gas storage chamber (N), the middle section of the colored heavy gas guide pipe (J) is provided with a gas transmission machine (K), the upper part of the rectification channel (E) is provided with a refrigeration sheet (F), the lower part of the rectification channel (E) is provided with a heating sheet (G), the middle part of the rectification channel is provided with copper, the gas transmission machine (L1) is connected with the rectification channel (E) and the gas pipe (M1), the air extraction machine (L2) is connected with the air outlet channel (D) and the deceleration pipe (M2), the gas storage chamber (N) is connected with the gas pipe (M1) and the deceleration gas pipe (M2), a flow baffle plate (P) and a flow distribution plate (Q) are arranged in the gas storage chamber (N), and the middle-upper area of the gas storage chamber (N) stores hydrogen (R) and the lower area stores colored heavy gas (O).

The simulation wind tunnel assembly (attached figure: 2): when the system is started, a model is put into an experimental area (A), the experimental area (A) and a gate (S) are lowered to positions shown in figure 2, hydrogen is input through a hydrogen inlet and outlet (B), air is pumped out through an air inlet and outlet (C) until the hydrogen is detected through the air inlet and outlet (C), the air inlet and outlet (C) is closed, then the gate (S) is opened, the whole system is filled with the hydrogen, and a small amount of colored heavy gas (O) is contained in a gas storage chamber (N). And (3) running: the gas supply machine (L1) pumps hydrogen gas (R) from the upper part of the gas storage chamber (N) through a gas pipe (M1) and sends the hydrogen gas (R) into the experimental area (A) through the rectifying channel (E) for experiment, rectification passageway (E) is through refrigeration piece (F) and the adjustable hydrogen (R) temperature of piece (G) of heating, coloured heavy gas controller (I) application gas transmission machinery (K) is sent into coloured heavy gas (O) through coloured heavy gas pipe (J), machine of bleeding (L2) is taken out hydrogen (R) and coloured heavy gas (O) through air-out passageway (D), it is big that the little afterbody diameter of head diameter is held down to speed reduction gas-supply pipe (M2), machine of bleeding (L2) is connected to the head, the gaseous apotheca of connection of afterbody (N), hydrogen (R) and coloured heavy gas (O) can autosegregation be upper and lower two-layer storage in gas storage room (N) after slowing down and the fender flow, finally realize cyclic utilization. And (4) at the end: and (3) closing the gate (S), extracting hydrogen from the hydrogen inlet and outlet (B), inputting air from the air inlet and outlet (C), sealing the hydrogen inlet and outlet (B) until the air is detected by the hydrogen inlet and outlet (C), and lifting the experimental area (A).

The invention uses the recycled hydrogen to carry out pneumatic experiments, can reduce the size of a large aircraft by about 14 times, can obtain a real pneumatic environment at all, and realizes the purpose of simulating the real environment. Lower density gases may also be used.

The invention has the advantages and beneficial effects that: the simulation wind tunnel (figure 2) correspondingly reduces the volume and the density of a tested model by utilizing the ratio of the low density of hydrogen to the air density, the wind speed is amplified by corresponding times, the space of the whole test field is relatively small, and the energy consumption is low.

Drawings

Fig. 1 is a schematic diagram of a conventional wind tunnel structure.

FIG. 2 is a structural overview of the present invention.

Fig. 3 is a detailed view of the rectifying passage (E).

FIG. 4 is a detailed view of the closed state of the experimental region (A).

FIG. 5 is a detailed view showing the opened state of the test area (A).

Fig. 6 is a detailed view of the colored heavy gas controller (I).

FIG. 7 is a detailed view of the model stent in the experimental area (A).

Detailed Description

The invention is further illustrated by the following specific figures and examples.

As shown in fig. 2: including experimental area (A), hydrogen access & exit (B), air access & exit (C), air-out passageway (D), rectification channel (E), refrigeration piece (F), piece (G) heats, sealed slide rail (H), coloured heavy gas control ware (I), coloured heavy gas pipe (J), gas transmission machinery (K), air supply machinery (L1), air exhaust machinery (L2), gas-supply pipe (M1), speed reduction gas-supply pipe (M2), gas storage room (N), coloured heavy gas (O), keep off and flow board (P), flow distribution plate (Q), hydrogen (R), gate (S). Wherein: the refrigerator comprises a refrigerating sheet (F), a heating sheet (G), a sealing slide rail (H), a colored heavy gas controller (I), a gas conveying machine (K), a gas feeding machine (L1) and an air exhausting machine (L2) which are in the prior art.

As shown in fig. 2: the simulation wind tunnel is characterized in that a gate (S) is arranged in the middle of a sealing slide rail (H), a test area (A), a rectification channel (E) and an air outlet channel (D) are connected, a hydrogen inlet and a hydrogen outlet (B) are arranged on the upper portion of the test area (A), an air inlet and a air outlet (C) are arranged on the lower portion of the test area (A), a colored heavy gas controller (I) is arranged inside the test area (A), a colored heavy gas guide pipe (J) is connected with the test area (A) and a gas storage chamber (N), an air conveying machine (K) is arranged in the middle section of the colored heavy gas guide pipe (J), a refrigerating sheet (F) is arranged on the upper portion of the rectification channel (E), a heating sheet (G) is arranged on the lower portion of the rectification channel (E), a copper rectification network channel is arranged in the middle of the colored heavy gas guide pipe (J), the air conveying machine (L1) is connected with the rectification channel (E) and a gas pipe (M1), the air extracting machine (L2) is connected with the air outlet channel (D) and a speed reducing machine (M2), the gas storage chamber (N) is connected with the gas pipe (M1) and the speed reducing machine (M2), a flow baffle plate (P) and a flow distribution plate (Q) are arranged in the gas storage chamber (N), and the middle-upper area of the gas storage chamber (N) stores hydrogen (R) and the lower area stores colored heavy gas (O).

As shown in fig. 2: when the system is started, a model is put into an experimental area (A), the experimental area (A) and a gate (S) are lowered to positions shown in figure 2, hydrogen is input through a hydrogen inlet and outlet (B), air is pumped out through an air inlet and outlet (C) until the hydrogen is detected through the air inlet and outlet (C), the air inlet and outlet (C) is closed, then the gate (S) is opened, the whole system is filled with the hydrogen, and a small amount of colored heavy gas (O) is contained in a gas storage chamber (N). And (3) running: the gas supply machine (L1) pumps hydrogen gas (R) from the upper part of the gas storage chamber (N) through a gas pipe (M1) and sends the hydrogen gas (R) into the experimental area (A) through the rectifying channel (E) for experiment, rectification passageway (E) is through refrigeration piece (F) and the adjustable hydrogen (R) temperature of piece (G) of heating, coloured heavy gas controller (I) application gas transmission machinery (K) is sent into coloured heavy gas (O) through coloured heavy gas pipe (J), machine of bleeding (L2) is taken out hydrogen (R) and coloured heavy gas (O) through air-out passageway (D), it is big that the little afterbody diameter of head diameter is held down to speed reduction gas-supply pipe (M2), machine of bleeding (L2) is connected to the head, the gaseous apotheca of connection of afterbody (N), hydrogen (R) and coloured heavy gas (O) can autosegregation be upper and lower two-layer storage in gas storage room (N) after slowing down and the fender flow, finally realize cyclic utilization. And (4) at the end: and (3) closing the gate (S), extracting hydrogen from the hydrogen inlet and outlet (B), inputting air from the air inlet and outlet (C), sealing the hydrogen inlet and outlet (B) until the air is detected by the hydrogen inlet and outlet (C), and lifting the experimental area (A).

In application, since the air density is known to be about 14.38 times the hydrogen density, the corresponding measured model volume is reduced by 14.38 times, corresponding to the simulated aircraft 1: 1, the density is reduced by a factor of 14.38, corresponding to the simulated aircraft 1: 1, environment of gravity. When the speed of hydrogen is 1 meter per second, the corresponding speed of air is 14.38 meters per second. When the high-altitude thin air is simulated, the model is correspondingly reduced by corresponding times so as to correspond to the air environment with corresponding height. The gas reservoir (N) should be as large as possible.

As shown in fig. 3: the rectification channel (E) comprises a heat insulation shell (E1), a copper rectification network channel (E2), a refrigerating sheet (F) and a heating sheet (G).

As shown in fig. 3: the rectifying channel (E) is wrapped with a copper rectifying network channel (E2) in a heat insulation shell (E1), the refrigerating sheet (F) is attached to the upper part of the copper rectifying network channel (E2), and the heating sheet (G) is attached to the lower part of the copper rectifying network channel (E2).

And (3) running: the hydrogen (R) is rectified into stable advection through a copper rectification network (E2), and is sent into the experimental area (A) after the temperature is adjusted through the heating sheet (G) and the cooling sheet (F).

As shown in fig. 4: experiment area (A) outside includes hydrogen access & exit (B), air access & exit (C), sealed slide rail (H), observes glass (A1), and experiment area (A) is inside including test model (A2), platform net (A3), model support (A4), connector (I1), controller guide rail (I2), controller shower nozzle pole (I3).

As shown in fig. 4: the structure, hydrogen access & exit (B) link to each other fixedly with observation glass (A1), observation glass (A1) links to each other with the guide rail of sealed slide rail (H), sealed slide rail (H) do prior art sealing process with hydrogen access & exit (B) and observation glass (A1) junction, model support (A4) links to each other with the model (A2) that is surveyed, model support (A4) is placed on platform net (A3), connector (I1) links to each other with outside coloured heavy gas pipe (J) through observation glass (A1) and ventilates, connector (I1) links to each other with controller shower nozzle pole (I3) through the pipe and ventilates, be equipped with a plurality of shower nozzles on controller shower nozzle pole (I3), controller shower nozzle pole (I3) links to each other with controller guide rail (I2) through the support.

And (3) running: the colored heavy gas controller (I) can control the controller spray head rod (I3) to move up and down and transversely on the controller guide rail (I2), 2 or more spray heads can be used for experiments, and the spray heads which are not used are lowered to be close to the platform net (A3).

As shown in fig. 5: experiment area (A) outside includes hydrogen access & exit (B), air access & exit (C), sealed slide rail (H), observes glass (A1), and experiment area (A) is inside including test model (A2), platform net (A3), model support (A4), connector (I1), controller guide rail (I2), controller shower nozzle pole (I3).

As shown in fig. 5: the structure is the same as that of fig. 4.

And (4) at the end: the hydrogen gas inlet/outlet (B) and the observation glass (A1) are raised together by a sealing slide rail (H).

As shown in fig. 6: taking two groups of nozzles as an example, the colored heavy gas controller (I) comprises a connector (I1), a thin nozzle guide pipe (I8), a thick nozzle guide pipe (I9), a thin bracket (I11), a thick bracket (I10), a thin nozzle rod (I5), a thick nozzle rod (I4), a thin nozzle (I7) and a thick nozzle (I6).

As shown in fig. 6: the structure, connector (I1) is through observing glass (A1) and outside coloured heavy gas pipe (J) continuous aeration, thin shower nozzle pipe (I8) and thick shower nozzle pipe (I9) link to each other with connector (I1) and ventilate, thin shower nozzle pole (I5) links to each other with thin shower nozzle pipe (I8) and ventilates, thick shower nozzle pole (I4) links to each other with thick shower nozzle pipe (I9) and ventilates, thin shower nozzle pole (I5) links to each other fixedly with thin support (I11), thick shower nozzle pole (I4) links to each other fixedly with thick support (I11), be equipped with a plurality of thin shower nozzles (I7) and thick shower nozzle (I6) on thin shower nozzle pole (I5) and thick shower nozzle pole (I4), thin shower nozzle pole (I5) and thick shower nozzle pole (I4) are equipped with prior art electronic valve.

The other surfaces of the thin nozzle rod (I5) and the thick nozzle rod (I4) which are provided with the nozzles are wedge-shaped so as to reduce resistance.

As shown in fig. 7: the device comprises a tested model (A2), a model bracket (A4), a model base (A5) and a lifting force moving direction pointer (A6).

As shown in fig. 7: in the structure, the model base (A5) is connected with the model bracket (A4) through an internal spring piece, the lifting force moving pointer (A6) is connected and fixed with the model base (A5), and the model base (A5) is connected and fixed with the gravity center point of the tested model (A2).

And (3) running: the lift force generated by the tested model (A2) due to wind force is fed back to the rotating direction and the force of the model base (A5) through the spring piece in the model base (A5), and the direction and the strength of the lift force applied to the tested model (A2) can be observed through the lift force moving direction pointer (A6).

The model support (A4) may not be placed vertically in the application.