JPH0340357B2 - - Google Patents
Info
- Publication number
- JPH0340357B2 JPH0340357B2 JP58055044A JP5504483A JPH0340357B2 JP H0340357 B2 JPH0340357 B2 JP H0340357B2 JP 58055044 A JP58055044 A JP 58055044A JP 5504483 A JP5504483 A JP 5504483A JP H0340357 B2 JPH0340357 B2 JP H0340357B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- gas
- vacuum vessel
- water
- vacuum container
- 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.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 62
- 239000007789 gas Substances 0.000 claims description 39
- 230000004927 fusion Effects 0.000 claims description 17
- 239000000112 cooling gas Substances 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 235000012489 doughnuts Nutrition 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 239000007788 liquid Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Discharge Heating (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Plasma Technology (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は核融合装置用真空容器の冷却装置に係
り、特に核融合装置運転中に真空容器の外周側に
配置されている冷却管に液体、及び気体等の冷却
媒体を流通させて冷却するのに好適な核融合装置
用真空容器の冷却装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cooling device for a vacuum vessel for a nuclear fusion device, and in particular, the present invention relates to a cooling device for a vacuum vessel for a nuclear fusion device. The present invention also relates to a cooling device for a vacuum vessel for a nuclear fusion device, which is suitable for cooling by circulating a cooling medium such as gas.
第１図、及び第２図に核融合装置の概略を示
す。該図において、１は円環状の真空容器で、内
部にプラズマ２を収納している。３はトロイダル
コイルであり、真空容器１を取り囲み、かつ、ト
ーラス周方向に所定間隔をもつて複数個配置さ
れ、プラズマ２を閉じ込めるための磁場を発生し
ている。このトロイダルコイル３は、サポート４
等を介して上下の架台５に支持されている。６は
変流器コイル６ａ、垂直磁場コイル６ｂ、及び磁
気リミタコイル６ｃよりなるポロイダルコイル
で、プラズマ２の閉じ込め、及び位置制御のため
の磁場を発生している。
Figures 1 and 2 schematically show the nuclear fusion device. In the figure, reference numeral 1 denotes an annular vacuum container, which houses plasma 2 inside. A plurality of toroidal coils 3 surround the vacuum vessel 1 and are arranged at predetermined intervals in the circumferential direction of the torus, and generate a magnetic field for confining the plasma 2. This toroidal coil 3 supports 4
It is supported by upper and lower pedestals 5 via etc. A poloidal coil 6 includes a current transformer coil 6a, a vertical magnetic field coil 6b, and a magnetic limiter coil 6c, and generates a magnetic field for confining the plasma 2 and controlling its position.
このように構成される核融合装置において、特
に、装置運転中に高温に加熱される真空容器１は
冷却してやらなければならない。通常は、真空容
器１の外表面に設置した冷却管に水、または空気
等の冷却媒体を流して冷却している。第３図にこ
の様子を、真空容器１の外表面を拡大して示す。
該図のように、真空容器１の外表面に冷却管７を
配置するのであるが、通常、真空容器１には内部
観測用等のためのポート８、及び真空容器１のベ
ーキングのための加熱用ヒータ９などがあるた
め、複雑に屈曲して配置される。このような状態
で水等の冷却用液体、あるいは空気、N2ガス等
の冷却用気体を冷却管７に矢印の如く流通させて
真空容器１を冷却している。 In the nuclear fusion device configured as described above, in particular, the vacuum vessel 1, which is heated to a high temperature during operation of the device, must be cooled. Usually, the vacuum container 1 is cooled by flowing a cooling medium such as water or air through a cooling pipe installed on the outer surface of the vacuum container 1. This situation is shown in FIG. 3 with the outer surface of the vacuum container 1 enlarged.
As shown in the figure, a cooling pipe 7 is arranged on the outer surface of the vacuum container 1, but normally the vacuum container 1 has a port 8 for internal observation, etc., and a heating port for baking the vacuum container 1. Since there are heaters 9, etc., the heaters 9 are arranged in a complicated manner. In this state, the vacuum container 1 is cooled by flowing a cooling liquid such as water or a cooling gas such as air or N 2 gas through the cooling pipe 7 as shown by the arrow.
しかしながら、従来のこのような冷却装置で
は、装置運転中に液体、及び気体を使用した場合
にはそれぞれ問題となる。即ち、水等の液体では
冷却効果は良いが、真空容器１の温度が100℃を
こえた場合には、冷却管７内の水が沸騰して冷却
管７が破損したり、真空容器１の熱応力が過大と
なり非常に危険な状態となつてしまう。従つて、
運転中に真空容器１が100℃をこえた場合の水で
の冷却は危険である。このようなことにより、空
気やN2ガスの気体を使用することが考えられる。
空気やN2ガスを使用する場合は、運転中に真空
容器１が高温になつても水の場合のような問題は
ない。ところが、空気やN2ガス等の気体は、熱
容量が低いため真空容器１が低温（100℃以下）
になると真空容器１の壁面と気体との温度差が小
さくなるため、冷却性能が低下してしまい必要な
冷却が得られない。 However, with such conventional cooling devices, problems arise when liquids and gases are used during device operation. In other words, liquids such as water have a good cooling effect, but if the temperature of the vacuum container 1 exceeds 100°C, the water in the cooling tube 7 may boil and the cooling tube 7 may be damaged or the vacuum container 1 may be damaged. Thermal stress becomes excessive, resulting in a very dangerous situation. Therefore,
If the temperature of the vacuum container 1 exceeds 100°C during operation, cooling with water is dangerous. For this reason, it is conceivable to use air or N2 gas.
When air or N2 gas is used, there is no problem like the case with water even if the vacuum container 1 becomes hot during operation. However, gases such as air and N2 gas have low heat capacity, so the vacuum container 1 is at a low temperature (below 100℃).
When this happens, the temperature difference between the wall surface of the vacuum container 1 and the gas becomes small, so the cooling performance decreases and necessary cooling cannot be obtained.
このように、従来の冷却装置では液体、または
気体の一方のみを通常運転中に使用した場合には
それぞれ大きな欠点がある。一方、この両方の冷
却方式を同時に使用し、これらの欠点を補うこと
も考えられるが、これでも問題がある。即ち、第
３図に示したように、真空容器１の外表面にはポ
ート８、加熱用ヒータ９などが配置され、１種類
の冷却管７のみが配置でも非常に複雑となるた
め、液体用、気体用の２種類の冷却管７を設置す
ることは非常に困難である。たとえ２種類の冷却
管７が設置できたとしても、２種類の冷却管７は
交互に配置されるため、冷却管７のピツチｌ（第
３図に図示）が２倍となり、冷却能力が低下する
など問題が多く、装置運転中の問題は解消されな
い。 As described above, conventional cooling devices have major drawbacks when only liquid or gas is used during normal operation. On the other hand, it is conceivable to use both of these cooling methods at the same time to compensate for these drawbacks, but this also has problems. That is, as shown in FIG. 3, ports 8, heaters 9, etc. are arranged on the outer surface of the vacuum container 1, and even if only one type of cooling pipe 7 is arranged, the arrangement becomes very complicated. , it is very difficult to install two types of cooling pipes 7 for gas. Even if two types of cooling pipes 7 can be installed, since the two types of cooling pipes 7 are arranged alternately, the pitch l (shown in Figure 3) of the cooling pipes 7 will double, reducing the cooling capacity. There are many problems such as the following, and problems during equipment operation cannot be resolved.
尚、特開昭52−64594号公報には、真空容器の
ベーキング時に、該真空容器を加熱するための熱
を必要以上に奪うことがないように、コイルに冷
却ガスを流すことが記載されているが、核融合装
置運転中に生じる上記した問題については何ら記
載されてなく、上記した公知のものは、通常運転
中に生じる問題に対しては全く考慮されていなか
つた。 Furthermore, JP-A No. 52-64594 describes that when baking a vacuum container, a cooling gas is passed through the coil so as not to take away more heat for heating the vacuum container than necessary. However, there is no mention of the above-mentioned problems that occur during the operation of a nuclear fusion device, and the above-mentioned known methods do not take into account the problems that occur during normal operation.
本発明は上述の点に鑑み成されたもので、その
目的とするところは、通常運転中に冷却媒体とし
て液体・気体を使用するものであつても、冷却管
が破損したり危険な状態に至ることがないことは
勿論、真空容器の温度の高低にかかわらず冷却能
力が高い核融合装置用真空容器の冷却装置を提供
するにある。
The present invention has been made in view of the above points, and its purpose is to prevent cooling pipes from being damaged or in a dangerous state even if liquid or gas is used as a cooling medium during normal operation. The object of the present invention is to provide a cooling device for a vacuum vessel for a nuclear fusion device, which has a high cooling capacity regardless of whether the temperature of the vacuum vessel is high or low.
〔発明の概要
本発明は内部観測用等のためのポート・ベーキ
ングのための加熱用ヒータを有する真空容器の外
表面に、これらを避けて屈曲して配置される冷却
管に冷却用液体を供給する系統と冷却用気体を供
給する系統とを各々開閉弁を介して接続し、通常
運転中には該開閉弁の開閉により真空容器が100
℃以下では液体を、100℃以上では気体を供給す
ることにより所期の目的を達成するようになした
ものである。[Summary of the Invention The present invention supplies a cooling liquid to a cooling pipe that is bent and placed on the outer surface of a vacuum container having a heater for port baking for internal observation, etc., avoiding the heater. The system for supplying cooling gas and the system for supplying cooling gas are connected through on-off valves, and during normal operation, the vacuum vessel is
The intended purpose is achieved by supplying liquid at temperatures below 100°C and gas at temperatures above 100°C.
以下、図面の実施例に基づいて本発明を詳細に
説明する。尚、符号は従来と同一のものは同符号
を使用する。
Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings. Incidentally, the same reference numerals are used for the same parts as in the past.
第４図は本発明の一実施例を示す。該図の如
く、本実施例では真空容器１の外表面に配置され
ている冷却管７と給排用配管１０ａ，１０ｂを介
して冷却用気体であるN2ガス供給系Ｐ、及び冷
却用液体である水供給系Ｑが接続されている。
N2ガス供給系ＰはN2ガスボンベ１１と、供給側
の供給配管の途中に配置されるブロワ１２、及び
N2ガス開閉弁１３ａと、排気側の戻り配管の途
中に配置されるクーラ１４、及びN2ガス開閉弁
１３ｂとから構成される。一方、水供給系Ｑは貯
水槽１５と、供給側の供給配管の途中に配置され
るポンプ１６、及び水用開閉弁１７ａと、排水側
の戻り配管の途中に配置される水用開閉弁１７ｂ
とから構成される。更に、冷却管からの戻し配管
１０ｂの途中にはドレーン弁１８を設け、冷却管
７内の水をドレーンしてドレーン溝１９に除去す
る操作を行う。 FIG. 4 shows an embodiment of the present invention. As shown in the figure, in this embodiment, an N 2 gas supply system P, which is a cooling gas, and a cooling liquid are supplied via a cooling pipe 7 and supply/discharge pipes 10a and 10b arranged on the outer surface of a vacuum vessel 1. A water supply system Q is connected thereto.
The N2 gas supply system P includes an N2 gas cylinder 11, a blower 12 placed in the middle of the supply piping on the supply side, and
It is composed of an N 2 gas on-off valve 13a, a cooler 14 placed in the middle of the return pipe on the exhaust side, and an N 2 gas on-off valve 13b. On the other hand, the water supply system Q includes a water storage tank 15, a pump 16 disposed in the middle of the supply piping on the supply side, a water on-off valve 17a, and a water on-off valve 17b disposed in the middle of the return piping on the drainage side.
It consists of Further, a drain valve 18 is provided in the middle of the return pipe 10b from the cooling pipe, and the water in the cooling pipe 7 is drained and removed into the drain groove 19.
次に本実施例の核融合装置運転中における動作
を説明する。 Next, the operation during operation of the fusion device of this embodiment will be explained.
まず、真空容器１が100℃以下の運転ではN2ガ
ス用開閉弁１３ａ、および１３ｂを閉じ、水用開
閉弁１７ａ，１７ｂを開として貯水槽１５から水
をポンプ１６で冷却管７に供給し真空容器１を冷
却し、冷却し終えた水を貯水槽１５に回収する。
このように水で冷却する例としては、真空容器１
が常温の場合プラズマを点火する運転のときの冷
却がある。また、真空容器１が100℃以上の運転
では水用開閉弁１７ａ，１７ｂを閉じ、N2ガス
用開閉弁１３ａ，１３ｂを開とし、N2ガスボン
ベ１１から補給されたN2ガスをブロワ１２によ
つて冷却管７に供給して真空容器１を冷却し、冷
却し終えたN2ガスをクーラ１４で冷却する。こ
のようにN2ガスで冷却する例としては、真空容
器１を高温にしてプラズマを点火する運転、ある
いはベーキング（250〜500℃）後の真空容器冷却
運転等がある。 First, when the vacuum container 1 is operated at 100°C or lower, the N2 gas on-off valves 13a and 13b are closed, the water on-off valves 17a and 17b are opened, and water is supplied from the water storage tank 15 to the cooling pipe 7 with the pump 16. The vacuum container 1 is cooled, and the cooled water is collected into a water storage tank 15.
As an example of cooling with water in this way, vacuum container 1
If it is at room temperature, there is cooling during operation to ignite the plasma. In addition, when the vacuum container 1 is operated at 100°C or higher, the water on-off valves 17a and 17b are closed, the N2 gas on-off valves 13a and 13b are opened, and N2 gas supplied from the N2 gas cylinder 11 is supplied to the blower 12. Therefore, the N 2 gas is supplied to the cooling pipe 7 to cool the vacuum container 1, and the cooled N 2 gas is cooled by the cooler 14. Examples of such cooling with N 2 gas include an operation in which the vacuum vessel 1 is heated to a high temperature to ignite plasma, and an operation in which the vacuum vessel is cooled after baking (250 to 500° C.).
一方、核融合装置運転前には真空容器１の容器
壁から不純物を取り除くためヒータ等を用いて高
温に加熱するベーキングが行なわれるが、このベ
ーキングを行なう場合には、冷却管７の水をドレ
ーンしなければならない。このような場合、本実
施例の冷却装置では、水のドレーンを完全に行な
うためにN2ガス供給系Ｐから冷却管７にN2ガス
を供給し、このガス圧で水をドレーンできる系統
にする。即ち、水用開閉弁１７ａ，１７ｂ、およ
びN2ガス用開閉弁１３ｂを閉じ、N2ガス用開閉
弁１３ａ、およびドレーン弁１８を開き、ブロワ
１２によるN2ガス圧で冷却管７の水を完全にド
レーン溝１９に除去するようにしている。 On the other hand, before operation of the fusion device, baking is performed by heating the vacuum vessel 1 to a high temperature using a heater or the like in order to remove impurities from the wall of the vessel. Must. In such a case, in the cooling device of this embodiment, in order to completely drain the water, N2 gas is supplied from the N2 gas supply system P to the cooling pipe 7, and the system that can drain the water with this gas pressure is connected. do. That is, the water on-off valves 17a, 17b and the N2 gas on-off valve 13b are closed, the N2 gas on-off valve 13a and the drain valve 18 are opened, and the water in the cooling pipe 7 is drained by the N2 gas pressure from the blower 12. The drain groove 19 is completely removed.
このような本実施例の構成とすることにより、
核融合装置運転中における真空容器１の冷却に
水、及びN2ガスを使用しても、冷却管７、及び
給排用配管１０ａ，１０ｂは１種類でよいことは
勿論、真空容器１の温度の高低に応じて、水、及
びN2ガスを効率よく使いわけできるので冷却管
７の破損、あるいは真空容器１の熱応力等の影響
をうけず冷却性能の高い冷却を行うことができ
る。更に、核融合装置の運転前に行う真空容器１
のベーキング時には、冷却管７にN2ガスを供給
するだけの簡単な操作で、かつ、確実に冷却管７
内の水をドレーンできる効果がある。 By having the configuration of this embodiment as described above,
Even if water and N2 gas are used to cool the vacuum vessel 1 during operation of the fusion device, it goes without saying that only one type of cooling pipe 7 and supply/discharge piping 10a, 10b is required; Since water and N 2 gas can be used efficiently depending on the level of the temperature, cooling with high cooling performance can be performed without being affected by damage to the cooling pipe 7 or thermal stress in the vacuum vessel 1. Furthermore, vacuum vessel 1 performed before operation of the fusion device
When baking, simply supply N2 gas to the cooling pipe 7 and ensure that the cooling pipe 7
It has the effect of draining the water inside.
以上説明した本発明の核融合装置用真空容器の
冷却装置によれば、内部観測用等のためのポー
ト、ベーキングのための加熱用ヒータを有する真
空容器の外表面にこれらを避けて屈曲して配置さ
れる冷却管に冷却用液体を供給する系統と冷却用
気体を供給する系統を各々開閉弁を介して接続
し、通常運転中には該開閉弁の開閉により真空容
器が100℃以下では液体を、100℃以上では気体を
供給するようにしたものであるから、装置運転中
に液体、気体を使用して真空容器を冷却しても冷
却管を破損したり危険な状態に至ることがないこ
とは勿論、真空容器の温度の高低に見合つた液
体、気体での冷却を行うことができるので、冷却
能力が高いものが得られ、此種、核融合装置用真
空容器の冷却装置には非常に有効である。
According to the cooling device for a vacuum vessel for a nuclear fusion device of the present invention described above, the outer surface of the vacuum vessel having ports for internal observation, etc. and a heater for baking is bent to avoid these. The system for supplying cooling liquid and the system for supplying cooling gas to the cooling pipes are connected via on-off valves, and during normal operation, the on-off valves are opened and closed so that the vacuum vessel becomes liquid when the temperature is below 100°C. However, since gas is supplied at temperatures above 100°C, cooling the vacuum container using liquid or gas during equipment operation will not damage the cooling pipes or create a dangerous situation. Of course, since it is possible to perform cooling with liquid or gas that matches the temperature of the vacuum vessel, a device with high cooling capacity can be obtained, and this type of cooling system is extremely suitable for vacuum vessels for nuclear fusion devices. It is effective for
第１図は一般的な核融合装置を一部断面して示
す平面図、第２図はその−断面図、第３図は
冷却管の真空容器外表面への配置状態を示す図、
第４図は本発明の冷却装置の一実施例を示す系統
図である。
１……真空容器、２……プラズマ、３……トロ
イダルコイル、６……ポロイダルコイル、７……
冷却管、８……ポート、９……加熱用ヒータ、１
０ａ，１０ｂ……給排用配管、１１……N2ガス
ボンベ、１２……ブロワ、１３ａ，１３ｂ……
N2ガス用開閉弁、１４……クーラ、１５……貯
水槽、１６……ポンプ、１７ａ，１７ｂ……水用
開閉弁、１８……ドレーン弁、１９……ドレーン
溝。
Fig. 1 is a partially sectional plan view of a general nuclear fusion device, Fig. 2 is a cross-sectional view thereof, and Fig. 3 is a diagram showing the arrangement of cooling pipes on the outer surface of the vacuum vessel.
FIG. 4 is a system diagram showing one embodiment of the cooling device of the present invention. 1... Vacuum vessel, 2... Plasma, 3... Toroidal coil, 6... Poloidal coil, 7...
Cooling pipe, 8...port, 9...heater, 1
0a, 10b... Supply/discharge piping, 11... N2 gas cylinder, 12... Blower, 13a, 13b...
N2 gas on-off valve, 14...cooler, 15...water tank, 16...pump, 17a, 17b...water on-off valve, 18...drain valve, 19...drain groove.
Claims (1)
測用等のためのポート、ベーキングのための加熱
用ヒータを有し、ほぼドーナツ状に形成される真
空容器の外表面に、前記ポート、及び加熱用ヒー
タを避けて冷却管を屈曲させて配置し、該冷却管
に冷却媒体を流通させて冷却する核融合装置用真
空容器の冷却装置において、前記冷却管に冷却用
液体を供給する系統と冷却用気体を供給する系統
とを各々開閉弁を介して接続し、通常運転時には
該開閉弁の開閉により前記真空容器が100℃以下
では冷却用液体を供給し、100℃以上では冷却用
気体を供給することを特徴とする核融合装置用真
空容器の冷却装置。 ２ 前記冷却管からの戻し配管の途中にドレーン
弁を設けたことを特徴とする特許請求の範囲第１
項記載の核融合装置用真空容器の冷却装置。[Scope of Claims] 1. A vacuum container that confines plasma inside, has a port for internal observation, etc., and a heater for baking, and has the port on the outer surface of a vacuum container that is formed approximately in a donut shape. , and a cooling device for a vacuum vessel for a nuclear fusion device, in which a cooling pipe is arranged in a bent manner to avoid a heating heater, and a cooling medium is circulated through the cooling pipe for cooling, and a cooling liquid is supplied to the cooling pipe. The system and the system that supplies cooling gas are connected through on-off valves, and during normal operation, by opening and closing the on-off valves, the vacuum vessel supplies cooling liquid when it is below 100°C, and when it is above 100°C, it is not used for cooling. A cooling device for a vacuum vessel for a nuclear fusion device, characterized by supplying gas. 2. Claim 1, characterized in that a drain valve is provided in the middle of the return pipe from the cooling pipe.
A cooling device for a vacuum vessel for a nuclear fusion device as described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58055044A JPS58184573A (en) | 1983-04-01 | 1983-04-01 | Cooling device for vacuum vessel for nuclear fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58055044A JPS58184573A (en) | 1983-04-01 | 1983-04-01 | Cooling device for vacuum vessel for nuclear fusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58184573A JPS58184573A (en) | 1983-10-28 |
| JPH0340357B2 true JPH0340357B2 (en) | 1991-06-18 |
Family
ID=12987663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58055044A Granted JPS58184573A (en) | 1983-04-01 | 1983-04-01 | Cooling device for vacuum vessel for nuclear fusion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58184573A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4718705B2 (en) * | 2001-03-30 | 2011-07-06 | 三菱重工業株式会社 | Neutron shield for fusion devices |
-
1983
- 1983-04-01 JP JP58055044A patent/JPS58184573A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58184573A (en) | 1983-10-28 |
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