JPH0917571A - Heater for arc heating wind tunnel - Google Patents
Heater for arc heating wind tunnelInfo
- Publication number
- JPH0917571A JPH0917571A JP16232795A JP16232795A JPH0917571A JP H0917571 A JPH0917571 A JP H0917571A JP 16232795 A JP16232795 A JP 16232795A JP 16232795 A JP16232795 A JP 16232795A JP H0917571 A JPH0917571 A JP H0917571A
- Authority
- JP
- Japan
- Prior art keywords
- working fluid
- flow path
- anode
- nozzle
- wind tunnel
- 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.)
- Pending
Links
Landscapes
- Discharge Heating (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アーク加熱風洞用ヒー
タに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arc heating wind tunnel heater.
【０００２】[0002]
【従来の技術】従来より、風洞内の所要位置に配置した
供試体に対し高温のプラズマ気流を吹き付けて、前記供
試体の熱試験（耐熱試験や焼蝕試験等）を行うようにし
たアーク加熱風洞が知られているが、前記プラズマ気流
を発生させる加熱装置としてアーク加熱風洞用ヒータが
使用される。2. Description of the Related Art Conventionally, arc heating has been carried out by blowing a high-temperature plasma stream onto a test piece placed at a required position in a wind tunnel to perform a heat test (heat resistance test, corrosion test, etc.) on the test piece. A wind tunnel is known, but an arc heating wind tunnel heater is used as a heating device for generating the plasma airflow.
【０００３】図３は従来のアーク加熱風洞用ヒータの一
例を表わすものであり、基本的には、カソード（陰極）
１とアノード（陽極）２との間に形成された放電路３に
外部から作動流体導入流路４を介して空気等の作動流体
を供給し、該作動流体を前記カソード１とアノード２と
の間に発生させたアーク放電により高温のプラズマ気流
５としてノズル６から噴出するようになっている。FIG. 3 shows an example of a conventional heater for an arc heating wind tunnel. Basically, it is a cathode.
1 and an anode (anode) 2, a working fluid such as air is supplied from the outside via a working fluid introducing passage 4 to a discharge passage 3 formed between the cathode 1 and the anode 2. A high-temperature plasma stream 5 is ejected from a nozzle 6 by an arc discharge generated between them.
【０００４】又、前記アーク加熱風洞用ヒータのカソー
ド１並びにアノード２は、きわめて高温に晒されるた
め、カソード１の基端側に、水等の冷却媒体が供給され
る冷却流路７を形成すると共に、アノード２の所要箇所
にも、水等の冷却媒体が供給される冷却流路８，９を形
成し、カソード１並びにアノード２が溶損することを防
止するようになっている。Further, since the cathode 1 and the anode 2 of the heater for the arc heating wind tunnel are exposed to extremely high temperatures, the cooling passage 7 to which a cooling medium such as water is supplied is formed on the base end side of the cathode 1. At the same time, cooling passages 8 and 9 to which a cooling medium such as water is supplied are also formed at required portions of the anode 2 to prevent the cathode 1 and the anode 2 from being melted and damaged.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前述の
如き従来のアーク加熱風洞用ヒータでは、放電路３を通
過する間に作動流体が得る熱量は、アーク放電の陽光柱
の長さや作動流体の流量によって決まっており、それ以
外の残りの熱に関しては、冷却媒体による冷却によって
失われているのが現状であり、熱効率の低下につながっ
ていた。However, in the conventional arc heating wind tunnel heater as described above, the amount of heat obtained by the working fluid while passing through the discharge path 3 depends on the length of the positive column of the arc discharge and the flow rate of the working fluid. The rest of the heat is lost by cooling with the cooling medium, which has led to a decrease in thermal efficiency.
【０００６】本発明は、斯かる実情に鑑み、冷却媒体に
よる冷却によって失われていた熱の一部を作動流体によ
って吸収し得、熱効率の向上を図り得るアーク加熱風洞
用ヒータを提供しようとするものである。In view of the above situation, the present invention intends to provide an arc heating wind tunnel heater capable of absorbing a part of heat lost by cooling by a cooling medium by a working fluid and improving thermal efficiency. It is a thing.
【０００７】[0007]
【課題を解決するための手段】本発明は、カソードとア
ノードとの間に形成された放電路に作動流体導入流路を
介して作動流体を供給し、該作動流体を前記カソードと
アノードとの間に発生させたアーク放電により高温のプ
ラズマ気流としてノズルから噴出するよう構成したアー
ク加熱風洞用ヒータにおいて、アノード内部とノズル内
部に、外部から供給される作動流体をアノード内部とノ
ズル内部へ導入してアノードとノズルを冷却した後、作
動流体導入流路へ導く熱交換用流路を形成したことを特
徴とするものである。According to the present invention, a working fluid is supplied to a discharge passage formed between a cathode and an anode through a working fluid introducing passage, and the working fluid is supplied to the cathode and the anode. In a heater for an arc heating wind tunnel configured to eject from a nozzle as a high-temperature plasma airflow by an arc discharge generated between them, a working fluid supplied from the outside is introduced into the inside of the anode and the inside of the nozzle. After cooling the anode and the nozzle by means of this, a heat exchange flow path for leading to the working fluid introduction flow path is formed.
【０００８】[0008]
【作用】従って、カソードとアノードとの間に形成され
た放電路にアーク放電を発生させた状態で、作動流体
は、外部からアノード内部とノズル内部の熱交換用流路
へ導入され、アノードとノズルを冷却しつつ、アーク放
電による熱の一部を吸収して昇温し、該昇温した作動流
体は、作動流体導入流路へ導入され、該作動流体導入流
路から放電路に供給され、前記カソードとアノードとの
間に発生させたアーク放電により高温のプラズマ気流と
してノズルから噴出される。Therefore, the working fluid is introduced from the outside into the heat exchange passage inside the anode and inside the nozzle while arc discharge is generated in the discharge path formed between the cathode and the anode, and While cooling the nozzle, it absorbs part of the heat generated by the arc discharge to raise the temperature, and the raised working fluid is introduced into the working fluid introducing passage and supplied from the working fluid introducing passage to the discharge passage. A high temperature plasma stream is ejected from the nozzle by the arc discharge generated between the cathode and the anode.
【０００９】この結果、放電路を通過する間に作動流体
が得る熱以外の残りの熱は、冷却媒体による冷却によっ
て単に失われるだけでなく、予め作動流体に吸収される
形となり、高温（高解離度）の作動流体が得られると共
に、熱効率も向上する。As a result, the remaining heat other than the heat obtained by the working fluid while passing through the discharge path is not only lost by the cooling by the cooling medium but is also absorbed in advance by the working fluid, resulting in a high temperature (high temperature). A working fluid having a dissociation degree) is obtained, and thermal efficiency is improved.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は本発明の一実施例であって、図中、
図３と同一の符号を付した部分は同一物を表わしてお
り、基本的な構成は図３に示す従来のものと同様である
が、本実施例の特徴とするところは、図１に示す如く、
アノード２内部とノズル６内部に、外部から供給される
作動流体をアノード２内部とノズル６内部へ導入してア
ノード２とノズル６を冷却した後、作動流体導入流路４
へ導く熱交換用流路１０を形成した点にある。FIG. 1 shows an embodiment of the present invention.
Parts denoted by the same reference numerals as in FIG. 3 represent the same components, and the basic configuration is the same as that of the conventional one shown in FIG. 3, but the feature of this embodiment is shown in FIG. as,
After cooling the anode 2 and the nozzle 6 by introducing the working fluid supplied from the outside into the anode 2 and the nozzle 6 into the anode 2 and the nozzle 6, the working fluid introduction flow path 4
The point is that the heat exchange flow path 10 that leads to is formed.
【００１２】本実施例において、前記熱交換用流路１０
は、アノード２に形成された冷却流路９の内側に、作動
流体供給流路１１が接続された円環状の小径空間１２を
形成すると共に、ノズル６の先端内部に円環状の大径空
間１３を形成し、前記小径空間１２と大径空間１３との
間を、図２に示す如くノズル６の周方向へ所要ピッチで
配設された連結流路１４によって接続してなる構成を有
しており、前記大径空間１３は、管路１５を介して作動
流体導入流路４に接続してある。In this embodiment, the heat exchange channel 10 is used.
Forms an annular small-diameter space 12 connected to the working fluid supply passage 11 inside the cooling passage 9 formed in the anode 2, and an annular large-diameter space 13 inside the tip of the nozzle 6. And the small-diameter space 12 and the large-diameter space 13 are connected by a connecting flow path 14 arranged at a required pitch in the circumferential direction of the nozzle 6 as shown in FIG. The large-diameter space 13 is connected to the working fluid introduction flow path 4 via a pipe 15.
【００１３】尚、前記連結流路１４は、ノズル６の基端
側から先端側へ向け略真っ直ぐに延びるようにする代り
に、ノズル６の基端側から先端側へ向けスパイラル状に
延びるようにしてもよいことは言うまでもない。It should be noted that, instead of extending the connection passage 14 from the base end side of the nozzle 6 to the tip end side in a substantially straight line, it extends in a spiral shape from the base end side of the nozzle 6 to the tip end side. It goes without saying that it is okay.
【００１４】次に、上記実施例の作動を説明する。Next, the operation of the above embodiment will be described.
【００１５】カソード１とアノード２との間に形成され
た放電路３にアーク放電を発生させた状態で、作動流体
は、外部から作動流体供給流路１１を介して小径空間１
２に導入され、該小径空間１２から連結流路１４を経由
し大径空間１３へ流入する間に、アノード２とノズル６
を冷却しつつ、アーク放電による熱の一部を吸収して昇
温し、該昇温した作動流体が前記大径空間１３から管路
１５を経て作動流体導入流路４へ導入され、該作動流体
導入流路４から放電路３に供給された作動流体は、前記
カソード１とアノード２との間に発生させたアーク放電
により高温のプラズマ気流５としてノズル６から噴出さ
れる。In a state where arc discharge is generated in the discharge path 3 formed between the cathode 1 and the anode 2, the working fluid is supplied from the outside through the working fluid supply passage 11 to the small diameter space 1
2 is introduced into the large diameter space 13 from the small diameter space 12 through the connecting flow path 14, and the anode 2 and the nozzle 6
While cooling, the temperature rises by absorbing a part of the heat generated by the arc discharge, and the raised working fluid is introduced from the large diameter space 13 into the working fluid introduction flow path 4 through the pipe line 15, and the operation is performed. The working fluid supplied from the fluid introduction flow path 4 to the discharge path 3 is ejected from the nozzle 6 as a high temperature plasma stream 5 by the arc discharge generated between the cathode 1 and the anode 2.
【００１６】この結果、放電路３を通過する間に作動流
体が得る熱以外の残りの熱は、冷却媒体による冷却によ
って単に失われるだけでなく、予め作動流体に吸収され
る形となり、高温（高解離度）の作動流体が得られると
共に、熱効率も向上する。As a result, the remaining heat other than the heat obtained by the working fluid while passing through the discharge path 3 is not only lost by the cooling by the cooling medium, but is absorbed in the working fluid in advance, and the high temperature ( A working fluid having a high dissociation degree is obtained, and thermal efficiency is also improved.
【００１７】こうして、冷却媒体による冷却によって失
われていた熱の一部を作動流体によって吸収し得、熱効
率の向上を図り得る。In this way, a part of the heat lost by the cooling by the cooling medium can be absorbed by the working fluid, and the thermal efficiency can be improved.
【００１８】尚、本発明のアーク加熱風洞用ヒータは、
上述の実施例にのみ限定されるものではなく、本発明の
要旨を逸脱しない範囲内において種々変更を加え得るこ
とは勿論である。The arc heating wind tunnel heater of the present invention is
Of course, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the scope of the present invention.
【００１９】[0019]
【発明の効果】以上、説明したように本発明のアーク加
熱風洞用ヒータによれば、冷却媒体による冷却によって
失われていた熱の一部を作動流体によって吸収し得、熱
効率の向上を図り得るという優れた効果を奏し得る。As described above, according to the heater for an arc heating wind tunnel of the present invention, a part of the heat lost by the cooling by the cooling medium can be absorbed by the working fluid, and the thermal efficiency can be improved. That is, the excellent effect can be achieved.
【図１】本発明の一実施例の断面図である。FIG. 1 is a sectional view of one embodiment of the present invention.
【図２】図１のＩＩ−ＩＩ断面相当図である。FIG. 2 is a sectional view corresponding to the II-II section of FIG.
【図３】従来例の断面図である。FIG. 3 is a sectional view of a conventional example.
１ カソード ２ アノード ３ 放電路 ４ 作動流体導入流路 ５ プラズマ気流 ６ ノズル １０ 熱交換用流路 1 Cathode 2 Anode 3 Discharge Path 4 Working Fluid Introduction Flow Path 5 Plasma Air Flow 6 Nozzle 10 Heat Exchange Flow Path
Claims (1)
放電路に作動流体導入流路を介して作動流体を供給し、
該作動流体を前記カソードとアノードとの間に発生させ
たアーク放電により高温のプラズマ気流としてノズルか
ら噴出するよう構成したアーク加熱風洞用ヒータにおい
て、 アノード内部とノズル内部に、外部から供給される作動
流体をアノード内部とノズル内部へ導入してアノードと
ノズルを冷却した後、作動流体導入流路へ導く熱交換用
流路を形成したことを特徴とするアーク加熱風洞用ヒー
タ。1. A working fluid is supplied to a discharge path formed between a cathode and an anode through a working fluid introduction flow path,
In an arc heating wind tunnel heater configured to eject the working fluid from a nozzle as a high-temperature plasma stream by an arc discharge generated between the cathode and the anode, an operation supplied from the outside to the inside of the anode and the inside of the nozzle. A heater for an arc heating wind tunnel, wherein a flow path for heat exchange is formed to introduce a fluid into the inside of the anode and the inside of the nozzle to cool the anode and the nozzle, and then to guide the working fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16232795A JPH0917571A (en) | 1995-06-28 | 1995-06-28 | Heater for arc heating wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16232795A JPH0917571A (en) | 1995-06-28 | 1995-06-28 | Heater for arc heating wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0917571A true JPH0917571A (en) | 1997-01-17 |
Family
ID=15752437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16232795A Pending JPH0917571A (en) | 1995-06-28 | 1995-06-28 | Heater for arc heating wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0917571A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100446335B1 (en) * | 2002-09-11 | 2004-09-01 | 주식회사 로템 | Heater for wind tunnel |
| CN104406763A (en) * | 2014-10-17 | 2015-03-11 | 北京航天益森风洞工程技术有限公司 | Spray pipe throat channel segment water cooling structure |
| CN111220340A (en) * | 2020-01-09 | 2020-06-02 | 中国空气动力研究与发展中心超高速空气动力研究所 | Shell cooling structure of wind tunnel heating section and manufacturing method thereof |
-
1995
- 1995-06-28 JP JP16232795A patent/JPH0917571A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100446335B1 (en) * | 2002-09-11 | 2004-09-01 | 주식회사 로템 | Heater for wind tunnel |
| CN104406763A (en) * | 2014-10-17 | 2015-03-11 | 北京航天益森风洞工程技术有限公司 | Spray pipe throat channel segment water cooling structure |
| CN111220340A (en) * | 2020-01-09 | 2020-06-02 | 中国空气动力研究与发展中心超高速空气动力研究所 | Shell cooling structure of wind tunnel heating section and manufacturing method thereof |
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