JPH04204134A - Stopping method of wind tunnel apparatus - Google Patents
Stopping method of wind tunnel apparatusInfo
- Publication number
- JPH04204134A JPH04204134A JP33053090A JP33053090A JPH04204134A JP H04204134 A JPH04204134 A JP H04204134A JP 33053090 A JP33053090 A JP 33053090A JP 33053090 A JP33053090 A JP 33053090A JP H04204134 A JPH04204134 A JP H04204134A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- low
- ejector
- air
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、風洞装置の停止方法に係り、特に、例えば宇
宙往還用エンジン開発等の実験設備として使用される熱
風洞試験装置の制御に好適な風洞装置の停止方法に関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for stopping a wind tunnel apparatus, and is particularly suitable for controlling a hot wind tunnel test apparatus used as experimental equipment for, for example, developing a space shuttle engine. The present invention relates to a method for stopping a wind tunnel apparatus.
［従来の技術］
近年、例えば宇宙往還機用エンジンの開発、あるいは、
その材料開発用として、高空飛行環境を地上で模擬する
ための実験設備である熱風洞試験装置の開発が盛んであ
る。[Prior art] In recent years, for example, the development of engines for spacecraft, or
In order to develop materials for this purpose, there is active development of thermal wind tunnel test equipment, which is an experimental facility for simulating high-altitude flight environments on the ground.
なお、この種の試験設備に関する文献として、ｒＮＡＬ
ＴＲ−４５４Ｊに「航空宇宙技術研究所のロケット
エンジン高空性能試験設備」（１９７６年４月、航空宇
宙技術研究所発行）がある。In addition, as a literature regarding this type of test equipment, rNAL
TR-454J includes ``Aerospace Technology Research Institute Rocket Engine High-Altitude Performance Test Facility'' (April 1976, published by Aerospace Technology Research Institute).
熱風洞試験装置は、主に、高圧ガス供給系、ガス加熱部
、ノズル、低圧室、デイフユーザ、エゼクタおよび排気
系などから構成され、デイフユーザやエゼクタの機能を
利用して、低圧室内圧力を、例えば０．１気圧などの高
空環境に模擬する装置である。The hot wind tunnel test equipment mainly consists of a high-pressure gas supply system, a gas heating section, a nozzle, a low-pressure chamber, a diff user, an ejector, an exhaust system, etc., and uses the functions of the diff user and ejector to measure the low-pressure room pressure, for example. This is a device that simulates a high-altitude environment such as 0.1 atm.
これら熱風洞”試験装置の運転制御、特に停止方法につ
いて述べれば、従来の停止方法は、前記文献に記載され
ているように、停止時刻、たとえば０．１気圧と低圧に
なった低圧室内の圧力を大気圧まで回復させる手段は、
低圧室下流側に仕切弁を設け、この仕切弁を閉じたのち
、エゼクタを停止させ、その後、リーク弁から低圧室に
大気を徐々に流入させて大気圧まで回復させるものであ
った。Regarding the operation control, especially the stopping method, of these "thermal wind tunnel" test equipment, the conventional stopping method, as described in the above-mentioned literature, is based on the stopping time, for example, when the pressure in the low-pressure chamber has become as low as 0.1 atm. The means to restore it to atmospheric pressure is
A gate valve was provided on the downstream side of the low pressure chamber, and after closing the gate valve, the ejector was stopped, and then atmospheric pressure was gradually allowed to flow into the low pressure chamber through the leak valve to restore atmospheric pressure.
なお、停止時に低圧室内の圧力を大気圧近傍（少なくと
も０．６気圧以下）まで回復させることは、排気系から
低圧室への気流の逆衝撃波を防止する上で必要なことで
ある。Note that it is necessary to restore the pressure in the low pressure chamber to near atmospheric pressure (at least 0.6 atmospheres or less) when the engine is stopped in order to prevent a reverse shock wave of the airflow from the exhaust system to the low pressure chamber.
［発明が解決しようとする課題］
上記従来技術による熱風洞試験装置の停止方法′ では
、排気系の主流路の閉鎖用として仕切弁等が設けられる
ため、装置自体が高価となり、かつ、仕切弁が誤動作し
やすく、事故発生の恐れがあった。[Problems to be Solved by the Invention] In the method for shutting down a hot wind tunnel test device according to the prior art described above, a gate valve or the like is provided to close the main flow path of the exhaust system, so the device itself becomes expensive, and the gate valve It was easy to malfunction and there was a risk of an accident.
本発明の目的は、上記従来技術における問題点を解決す
るためになされたもので、排気系の気流の主流路に仕切
弁なとの流路閉鎖手段を設けることなしに、停止時に低
圧室内の圧力を大気圧近傍まで回復させることを可能と
した風洞装置の停止方法を提供すること、その目的とす
るものである。SUMMARY OF THE INVENTION An object of the present invention has been made to solve the problems in the prior art described above. It is an object of the present invention to provide a method for stopping a wind tunnel apparatus that makes it possible to restore the pressure to near atmospheric pressure.
また、本発明の他の目的は、排気系主流路に仕切弁なと
の流路閉鎖手段を省略できるので、低コストで、かつ、
仕切弁の誤動作などによる事故発生の恐れのない風洞装
置の停止方法を提供することにある。Another object of the present invention is that it is possible to omit passage closing means such as a gate valve in the main passage of the exhaust system, so that the cost is low and
It is an object of the present invention to provide a method for stopping a wind tunnel apparatus without fear of accidents caused by malfunction of gate valves.
［ｇＡ題を解決するための手段］
上記目的を達成するために、本発明に係る風洞装置の停
止方法の構成は、高圧ガス供給系と、ガス加熱部と、ノ
ズルと、低圧室と、低圧室内の圧力をある一定の低圧状
態にするための流体噴出手段と、排気系とからなる風洞
装置の停止方法において、前記低圧室に大気を流入させ
るための真空ブレーク弁を設け、かつ、低圧室上流側の
前記高圧ガス供給系より前記ガス加熱部および前記ノズ
ルを経る主流路を通して空気を導入し、さらに、前記流
体噴出手段を所定の時定数をもって停止するようにし、
これら３つの要素を連動させることによって、前記低圧
室内の圧力を所定時間内に大気圧近傍まで回復させるよ
うにしたものである。[Means for Solving Problem gA] In order to achieve the above object, the configuration of the wind tunnel apparatus stopping method according to the present invention includes a high pressure gas supply system, a gas heating section, a nozzle, a low pressure chamber, and a low pressure In a method for stopping a wind tunnel apparatus comprising a fluid ejecting means for bringing the pressure in the room to a certain low pressure state and an exhaust system, a vacuum break valve is provided for causing atmospheric air to flow into the low pressure chamber, and the low pressure chamber Air is introduced from the high-pressure gas supply system on the upstream side through the main flow path passing through the gas heating section and the nozzle, and further, the fluid ejection means is stopped with a predetermined time constant,
By interlocking these three elements, the pressure within the low pressure chamber is restored to near atmospheric pressure within a predetermined period of time.
［作用コ
本発明は、上記のように、低圧室に真空ブレーク弁を設
け、かつ、低圧室上流側の高圧ガス供給系からガス加熱
部およびノズルを経る主流路を通して低圧室内圧力回復
のための空気を導入させ、さらに、流体噴出手段を構成
するエゼクタを瞬時に停止せずにある時定数をもって停
止させるようにし、これら３要素を自動的に連動させる
ようにしたことで、エゼクタ停止指令から完全停止まで
の間の所定時間内に低圧室内の圧力をスムーズに大気圧
近傍まで回復させることができる。すなわち、真空ブレ
ーク弁と高圧ガス供給系からの空気を併用することは、
エゼクタを停止途中でブレークダウンさせることなく、
スムーズに停止させる作用上、および真空ブレーク弁の
弁口径を極力小さくする上で有効な手段である。[Function] As described above, the present invention provides a vacuum break valve in the low pressure chamber, and a main flow path from the high pressure gas supply system on the upstream side of the low pressure chamber through the gas heating section and the nozzle to restore the pressure in the low pressure chamber. In addition, the ejector constituting the fluid ejecting means is not stopped instantaneously, but is stopped with a certain time constant, and these three elements are automatically linked, so that the ejector can be completely stopped from the ejector stop command. The pressure in the low pressure chamber can be smoothly restored to near atmospheric pressure within a predetermined period of time before stopping. In other words, using the vacuum break valve and air from the high pressure gas supply system
without causing the ejector to break down while stopping.
This is an effective means to stop the valve smoothly and to minimize the diameter of the vacuum break valve.
エゼクタを瞬時に停止させずにある時定数をもって停止
させることは、エゼクタの駆動流体（空気または水蒸気
）を徐々に減らすことができることになり、エゼクタ吸
入側の圧力を徐々に大気圧近傍まで回復させることがで
きる。By stopping the ejector with a certain time constant instead of instantaneously, the driving fluid (air or steam) for the ejector can be gradually reduced, and the pressure on the ejector suction side can be gradually restored to near atmospheric pressure. be able to.
なお、エゼクタのブレークダウン現象とは、エゼクタ運
転中に吸入側圧力が例えば０．１気圧から瞬時に大気圧
近傍まで高まる現象をいう。Note that the ejector breakdown phenomenon refers to a phenomenon in which the suction side pressure instantaneously increases from, for example, 0.1 atm to near atmospheric pressure during ejector operation.
［実施例］
以下、本発明の一実施例を第１図ないし第５図を参照し
て説明する。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
第１図は、本発明の一実施例に係る熱風洞装置の略示構
成図、第２図は、第１図の熱風洞装置の配管系統図、第
３図は、第１図の熱風洞装置における停止方法を説明す
るタイムチャート、第４図は、エゼクタ駆動空気量と低
圧室内圧力との関係を示す線図、第５図は、本発明の実
施例を基に実験し、得られた実験データを示す線図であ
る。1 is a schematic configuration diagram of a hot air tunnel apparatus according to an embodiment of the present invention, FIG. 2 is a piping system diagram of the hot air tunnel apparatus of FIG. 1, and FIG. 3 is a diagram of the hot air tunnel of FIG. 1. FIG. 4 is a diagram showing the relationship between ejector drive air amount and low-pressure chamber pressure, and FIG. FIG. 3 is a diagram showing experimental data.
第１図において、１は、ガス加熱部に係る希薄燃焼加熱
器で、この希薄燃焼加熱器１は、主流路気流温度をある
必要温度に加熱するためのものである。２はノズル、３
は低圧室、４は下流側排気ダクト、５は、低圧室内の圧
力をある一定の低圧状態に低下させるための流体噴出手
段を構成するエゼクタ、６は、装置停止時に低圧室３内
に大気を流入させるための真空ブレーク弁である。In FIG. 1, reference numeral 1 denotes a lean burn heater related to the gas heating section, and this lean burn heater 1 is for heating the main flow passage airflow temperature to a certain required temperature. 2 is a nozzle, 3
4 is a low pressure chamber; 4 is a downstream exhaust duct; 5 is an ejector that constitutes a fluid jetting means for reducing the pressure in the low pressure chamber to a certain low pressure state; This is a vacuum break valve for inflow.
すなわち、第１図に示すように、低圧室３を構成するチ
ャンバーの一端に希薄燃焼加熱器１が装着され、この希
薄燃焼加熱器１に連結したノズル２が低圧室３内に開口
している。また、低圧室３のチャンバーに真空ブレーク
弁６が具備されている。一方、低圧室３を構成するチャ
ンバーの他方に、下流側排気ダクト４が接続し、エゼク
タ５に連結している。That is, as shown in FIG. 1, a lean combustion heater 1 is installed at one end of a chamber constituting a low pressure chamber 3, and a nozzle 2 connected to this lean combustion heater 1 opens into the low pressure chamber 3. . Further, the chamber of the low pressure chamber 3 is equipped with a vacuum break valve 6. On the other hand, a downstream exhaust duct 4 is connected to the other chamber constituting the low pressure chamber 3, and is connected to an ejector 5.
第２図は、第１図に示す実施例の配管系統を示す。FIG. 2 shows the piping system of the embodiment shown in FIG.
第２図において、７は、高圧ガス供給系の主流路配管、
８は高圧空気配管、９は、希薄燃焼加熱器１で燃料を燃
焼させる際の酸化剤として使用する高圧酸素の配管、１
０はエゼクタ駆動用空気配管、１１は、前記希薄燃焼加
熱器１の燃料となる高圧水素の配管を、それぞれ示して
いる。In FIG. 2, 7 is the main flow pipe of the high-pressure gas supply system;
8 is a high-pressure air pipe; 9 is a high-pressure oxygen pipe used as an oxidizing agent when burning fuel in the lean combustion heater 1;
0 indicates an air pipe for driving the ejector, and 11 indicates a high-pressure hydrogen pipe serving as the fuel for the lean combustion heater 1, respectively.
通常運転時には、主流路配管７には混合器２６で混合さ
れた空気と酸素の混合ガスが流れるようになっている。During normal operation, a mixed gas of air and oxygen mixed in the mixer 26 flows through the main flow pipe 7.
また、第２図に示す各配管系統において、１２および１
６は圧力制御弁、１４および１８は減圧弁、１３，１５
．１７および１９は遮断弁、２０および２１は圧力信号
を電気信号に変換する信号変換器、２２，２３．２４お
よび２５は流量計である。In addition, in each piping system shown in Figure 2, 12 and 1
6 is a pressure control valve, 14 and 18 are pressure reducing valves, 13, 15
．． 17 and 19 are shutoff valves, 20 and 21 are signal converters that convert pressure signals into electrical signals, and 22, 23, 24 and 25 are flow meters.
第３図は、第１図および第２図に示す実施例の熱風洞装
置の停止方法を説明するタイムチャートを示す。FIG. 3 shows a time chart illustrating a method of stopping the hot air tunnel apparatus of the embodiment shown in FIGS. 1 and 2. FIG.
第４図は、エゼクタ駆動空気量と低圧室内圧力の関係を
示す実験データであり、また、第５図は、本発明の実施
例を基に実験し、得られた実験データを示す。FIG. 4 shows experimental data showing the relationship between the ejector drive air amount and the low pressure chamber pressure, and FIG. 5 shows experimental data obtained from experiments based on the embodiments of the present invention.
次に、第１図および第２図に示す実施例の熱風洞装置の
停止方法について、第３図のタイムチャートを参照して
説明する。Next, a method of stopping the hot air tunnel apparatus of the embodiment shown in FIGS. 1 and 2 will be explained with reference to the time chart shown in FIG. 3.
熱風洞装置の運転中は、空気配管１０の遮断弁１７、高
圧空気配管８の遮断弁１３、高圧酸素配管９の遮断弁１
５、高圧水素配管１１の遮断弁１９は全開位置にある。During operation of the hot air tunnel apparatus, the shutoff valve 17 of the air pipe 10, the shutoff valve 13 of the high pressure air pipe 8, and the shutoff valve 1 of the high pressure oxygen pipe 9 are closed.
5. The shutoff valve 19 of the high-pressure hydrogen pipe 11 is in the fully open position.
また、高圧空気配管８の圧力制御弁１２．空気配管１０
の圧力制御弁１６、および高圧酸素配管９の減圧弁１４
．高圧水素配管工１の減圧弁１８は、それぞれ成る調整
開度位置にある。Also, the pressure control valve 12 of the high pressure air piping 8. Air piping 10
pressure control valve 16 and pressure reducing valve 14 of high pressure oxygen piping 9
．． The pressure reducing valves 18 of the high pressure hydrogen plumber 1 are in respective adjusted opening positions.
この運転状態において、低圧室３内の圧力はエゼクタ５
の機能により１例えば０．１気圧などの低圧状態を保っ
ており、また、主流路配管７の気流Ｑａは、例えばマツ
ハ５といった高速状態にある。In this operating state, the pressure inside the low pressure chamber 3 is reduced to the ejector 5.
This function maintains a low pressure state of, for example, 0.1 atmosphere, and the airflow Qa of the main flow pipe 7 is in a high-speed state, such as that of Matsuha 5, for example.
この状態から１図示しない運転制御盤盤面上の停止操作
スイッチを停止側に操作すると、まず、真空ブレーク弁
６が全閉する。続いて、真空ブレーク弁６と同時または
一定時間遅れて、エゼクタ駆動空気量調整用の圧力制御
弁１６が成る時定数ＴＩをもって閉鎖動作に入る。この
状態では、低圧室３への流入空気量３１は、主流路配管
７側からの気流Ｑｓと真空ブレーク弁６からの流入空気
Ｑｖとが加算された状態にあり、また、エゼクタ駆動空
気量３２は、エゼクタ駆動空気量調整用圧力制御弁１６
の弁開度に比例した流量状態にある。From this state, when the stop operation switch on the operation control panel (not shown) is operated to the stop side, first, the vacuum break valve 6 is fully closed. Subsequently, at the same time as the vacuum break valve 6 or after a fixed time delay, the pressure control valve 16 for adjusting the ejector drive air amount enters a closing operation with a time constant TI. In this state, the amount of air flowing into the low pressure chamber 3 31 is the sum of the air flow Qs from the main flow pipe 7 side and the amount of air flowing in from the vacuum break valve 6, and the amount of air for driving the ejector 32 is the pressure control valve 16 for adjusting the ejector drive air amount.
The flow rate is proportional to the valve opening.
運転制御盤盤面上の停止操作スイッチ停止操作後、また
は、真空ブレーク弁６全開後、一定時間Ｔ２経過して、
ガス供給系主流路空気量調整用の圧力制御弁１２が成る
閉鎖時間Ｔ３をもって全閉する。After a certain period of time T2 has passed after the stop operation switch on the operation control panel is stopped or after the vacuum break valve 6 is fully opened,
The pressure control valve 12 for adjusting the air amount in the main channel of the gas supply system is fully closed at the closing time T3.
なお、第３図しこは図示しないが、高圧酸素「供給−停
止」用の遮断弁１５および高圧水素「供給−停止」用の
遮断弁１９は、運転制御盤盤面上の停止操作スイッチの
停止操作と同じに全閉するようになっている。Although not shown in FIG. 3, the high-pressure oxygen "supply-stop" shutoff valve 15 and the high-pressure hydrogen "supply-stop" shutoff valve 19 are connected to the stop operation switch on the operation control panel. It is designed to be fully closed in the same way as the operation.
上記した一連の動作により、エゼクタ排出空気量３３お
よび低圧室内圧力３４は、第３図の図示のように変化し
、エゼクタのブレークダウンもなくスムーズに大気圧近
傍まで回復する。Through the series of operations described above, the ejector discharge air amount 33 and the low-pressure chamber pressure 34 change as shown in FIG. 3, and smoothly recover to near atmospheric pressure without ejector breakdown.
このことは、第４図、第５図に示す実験データでも証明
された。第５図において、３５は、エゼクタ駆動空気量
調整用の圧力制御弁１６の二次側圧力を示し、これは弁
開度に比例した値である。This was also proven by the experimental data shown in FIGS. 4 and 5. In FIG. 5, numeral 35 indicates the secondary side pressure of the pressure control valve 16 for adjusting the amount of air for driving the ejector, and this is a value proportional to the valve opening degree.
エゼクタ駆動空気量３２は図の如く変化し、低圧室内圧
力３４はブレークダウンもなく、図のようにスムーズに
大気圧近傍まで回復していることが明らかである。It is clear that the ejector drive air amount 32 changes as shown in the figure, and the low-pressure chamber pressure 34 has no breakdown and smoothly recovers to near atmospheric pressure as shown in the figure.
以上説明したように、本実施例によれば、低圧室に大気
を流入させるための真空ブレーキ弁を設け、かつ、低圧
室上流側の高圧ガス供給系から主流路を通して低圧室内
圧力回復のための空気を導入させ、さらに、エゼクタを
成る時定数をもって停止させるようにし、これら３つの
要素を自動的に連動させるようにしたので、熱風洞装置
の停止方法において、排気系の気流の主流路に仕切弁な
との流路閉鎖手段を設けることなしに、低圧室内の圧力
を所定時間内に大気圧近傍まで回復することができる。As explained above, according to this embodiment, a vacuum brake valve is provided to allow atmospheric air to flow into the low pressure chamber, and a vacuum brake valve is provided to allow atmospheric air to flow into the low pressure chamber, and a vacuum brake valve is provided to restore the pressure in the low pressure chamber through the main passage from the high pressure gas supply system on the upstream side of the low pressure chamber. By introducing air and stopping the ejector with a certain time constant, these three elements are automatically linked, so in the method of stopping the hot air tunnel equipment, it is possible to partition the main air flow path of the exhaust system. The pressure within the low pressure chamber can be restored to near atmospheric pressure within a predetermined time without providing a flow path closing means such as a valve.
また、排気系主流路に仕切弁などの流路閉鎖手段を省略
できるので、コスト面での効果のみでなく、仕切弁誤動
作などにより生じる可能性のある熱風洞装置の事故を回
避することができる。In addition, since it is possible to omit flow path closing means such as a gate valve in the main flow path of the exhaust system, it is not only effective in terms of cost, but also avoids accidents in hot air tunnel equipment that may occur due to gate valve malfunction. .
なお、上記の実施例では、低圧室内の圧力をある一定の
低圧状態にするための流体噴呂手段としてエゼクタを用
いた例を説明したが、本発明はこれに限らず、エゼクタ
およびデイフユーザを用いても差支えない。In addition, in the above embodiment, an example was explained in which an ejector was used as a fluid jet means for bringing the pressure inside the low pressure chamber to a certain low pressure state, but the present invention is not limited to this, and the present invention is not limited to this. There is no problem.
また、上記の実施例では、エゼクタ駆動空気量調整用の
圧力制御弁１６は、成る時定数をもって停止する例を説
明したが、成る閉鎖時間をもって閉鎖しても同様の効果
が得られる。Further, in the above embodiment, the pressure control valve 16 for adjusting the amount of air for driving the ejector is stopped after a certain time constant, but the same effect can be obtained even if the pressure control valve 16 is closed after a certain closing time.
［発明の効果コ
以上、詳細に説明したように、本発明によれば、排気系
の気流の主流路に仕切弁なとの流路閉鎖手段を設けるこ
となしに、停止時に低圧室内の圧力を大気圧近傍まで回
復させることを可能とした風洞装置の停止方法を提供す
ることができる。[Effects of the Invention] As explained in detail above, according to the present invention, the pressure in the low pressure chamber can be reduced at the time of stoppage without providing a flow path closing means such as a gate valve in the main flow path of the air flow in the exhaust system. It is possible to provide a method for stopping a wind tunnel apparatus that allows the pressure to be restored to near atmospheric pressure.
また、本発明によれば、排気系主流路に仕切弁なとの流
路閉鎖手段を省略できるので、低コストで、かつ、仕切
弁の誤動作などによる事故発生の恐れのない風洞装置の
停止方法を提供することができる。Furthermore, according to the present invention, a flow path closing means such as a gate valve can be omitted in the main flow path of the exhaust system, so a method for shutting down a wind tunnel apparatus is low-cost and eliminates the risk of accidents due to malfunction of the gate valve. can be provided.
第１図は、本発明の一実施例に係る熱風洞装置の略示構
成図、第２図は、第１図の熱風洞装置の配管系統図、第
３図は、第１図の熱風洞装置における停止方法を説明す
るタイムチャート、第４図は、エゼクタ駆動空気量と低
圧室内圧力との関係を示す線図、第５図は、本発明の実
施例を基に実験し、得られた実験データを示す線図であ
る。
１・・・希薄燃焼加熱器、２・・・ノズル、６・・・低
圧室、４・・・下流側排気ダクト、５・・・エゼクタ、
６・・・真空ブレークベン、７・・・主流路配管、８・
・・高圧空気配管、９・・・高圧酸素配管、１０・・・
空気配管、１１・・・高圧水素配管、１２．１６・・・
圧力制御弁。1 is a schematic configuration diagram of a hot air tunnel apparatus according to an embodiment of the present invention, FIG. 2 is a piping system diagram of the hot air tunnel apparatus of FIG. 1, and FIG. 3 is a diagram of the hot air tunnel of FIG. 1. FIG. 4 is a diagram showing the relationship between ejector drive air amount and low-pressure chamber pressure, and FIG. FIG. 3 is a diagram showing experimental data. DESCRIPTION OF SYMBOLS 1... Lean burn heater, 2... Nozzle, 6... Low pressure chamber, 4... Downstream exhaust duct, 5... Ejector,
6... Vacuum break vent, 7... Main channel piping, 8...
...High pressure air piping, 9...High pressure oxygen piping, 10...
Air piping, 11...High pressure hydrogen piping, 12.16...
Pressure control valve.
Claims (1)
室と、低圧室内の圧力をある一定の低圧状態にするため
の流体噴出手段と、排気系とからなる風洞装置の停止方
法において、 前記低圧室に大気を流入させるための真空ブレーク弁を
設け、 かつ、低圧室上流側の前記高圧ガス供給系より前記ガス
加熱部および前記ノズルを経る主流路を通して空気を導
入し、 さらに、前記流体噴出手段を所定の時定数を、もって停
止するようにし、 これら３つの要素を連動させることによって、前記低圧
室内の圧力を所定時間内に大気圧近傍まで回復させるよ
うにした ことを特徴とする風洞装置の停止方法。[Claims] 1. Consisting of a high-pressure gas supply system, a gas heating section, a nozzle, a low-pressure chamber, a fluid jetting means for bringing the pressure in the low-pressure chamber to a certain low-pressure state, and an exhaust system. In the method for stopping a wind tunnel apparatus, a vacuum break valve is provided to allow atmospheric air to flow into the low pressure chamber, and air is introduced from the high pressure gas supply system upstream of the low pressure chamber through the main channel passing through the gas heating section and the nozzle. Further, the fluid ejecting means is stopped with a predetermined time constant, and by interlocking these three elements, the pressure in the low pressure chamber is restored to near atmospheric pressure within a predetermined time. A method of stopping a wind tunnel apparatus characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33053090A JP2642513B2 (en) | 1990-11-30 | 1990-11-30 | How to stop the wind tunnel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33053090A JP2642513B2 (en) | 1990-11-30 | 1990-11-30 | How to stop the wind tunnel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04204134A true JPH04204134A (en) | 1992-07-24 |
| JP2642513B2 JP2642513B2 (en) | 1997-08-20 |
Family
ID=18233667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33053090A Expired - Fee Related JP2642513B2 (en) | 1990-11-30 | 1990-11-30 | How to stop the wind tunnel device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2642513B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729845A (en) * | 2020-12-29 | 2021-04-30 | 北京动力机械研究所 | Heater rectifying component |
-
1990
- 1990-11-30 JP JP33053090A patent/JP2642513B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729845A (en) * | 2020-12-29 | 2021-04-30 | 北京动力机械研究所 | Heater rectifying component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2642513B2 (en) | 1997-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4047381A (en) | Gas turbine engine power plants for aircraft | |
| CN106499543B (en) | A kind of ejector exhaust pipe thruster vector control and the device of area regulation | |
| US8096104B2 (en) | Fluidic vectoring for exhaust nozzle | |
| JPH04204134A (en) | Stopping method of wind tunnel apparatus | |
| US2713245A (en) | Internal combustion turbine power plants with regenerative exhaust treatment system | |
| GB1357635A (en) | Pneumatic pressure type respirator | |
| US3403507A (en) | Control apparatus for equalizing an engine operating condition of a plurality of gasturbine engines | |
| US2748566A (en) | Compound gas-turbine engine with lowpressure compressor and turbine bypass | |
| JP2998571B2 (en) | Gas turbine protection device for exhaust reburning combined plant | |
| US2895294A (en) | Control system for gas turbine installations | |
| CN209752623U (en) | Online debugging and switching device for urea hydrolysis system | |
| JPH0921329A (en) | Exhaust gas reverse flow prevention device for gas turbine system | |
| JPH11173214A (en) | Burning type thrust generating device | |
| JPH09293522A (en) | Safety device for fuel cell power generation device | |
| JPH06129305A (en) | Emergency shut-off device of gas engine | |
| JP3066777B2 (en) | Fuel control device for gas turbine combustor | |
| CN216846904U (en) | Pipeline system and test device | |
| JPS57186038A (en) | Idle speed controller | |
| CN106507870B (en) | A kind of rocket diaphragm high temperature gas flow washout test device | |
| KR890014861A (en) | Engine turbo and air supply controls | |
| GB879747A (en) | Improved gas turbine engine fuel system | |
| Matsumoto et al. | Development of a subscale supersonic aeropropulsion wind tunnel | |
| GB971222A (en) | Gas turbine power plant | |
| JPH0886225A (en) | Fuel supply device for gas turbine engine | |
| JPS59112124A (en) | Gas burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080502 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090502 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |