JP3810829B2 - Space electric furnace - Google Patents

Space electric furnace Download PDF

Info

Publication number
JP3810829B2
JP3810829B2 JP14804995A JP14804995A JP3810829B2 JP 3810829 B2 JP3810829 B2 JP 3810829B2 JP 14804995 A JP14804995 A JP 14804995A JP 14804995 A JP14804995 A JP 14804995A JP 3810829 B2 JP3810829 B2 JP 3810829B2
Authority
JP
Japan
Prior art keywords
heater
electric furnace
cylinder
space
outer cylinder
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 - Fee Related
Application number
JP14804995A
Other languages
Japanese (ja)
Other versions
JPH08313168A (en
Inventor
潔 深澤
Original Assignee
株式会社アイ・エイチ・アイ・エアロスペース
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社アイ・エイチ・アイ・エアロスペース filed Critical 株式会社アイ・エイチ・アイ・エアロスペース
Priority to JP14804995A priority Critical patent/JP3810829B2/en
Publication of JPH08313168A publication Critical patent/JPH08313168A/en
Application granted granted Critical
Publication of JP3810829B2 publication Critical patent/JP3810829B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Resistance Heating (AREA)

Description

【0001】
【産業上の利用分野】
この発明は、宇宙空間に打ち上げて実験などに用いる宇宙用電気炉に関し、メイテナンスを容易とするとともに、熱損失を極力抑え、しかも打上げ時の振動などに耐え得る強度を確保できるようにしたものである。
【0002】
【従来の技術】
宇宙空間での高真空状態や無重力状態を利用して地上ではできない材料の開発などが行われつつあり、このため実験用の電気炉を宇宙空間にロケットなどで打上げて使用する。
【0003】
宇宙空間で使用するため作られた電気炉は、たとえばその一例を図3および図4に示すように、内筒1とその外側を覆う外筒2とで二重筒構造とされ、内外筒1,2の間に鏡面の金属フィルムをわずかな間隔を明けて巻いた断熱フォイル3が設けられ、内筒1の内側が加熱室4とされる。そして、この加熱室4内に棒状のヒータ5が複数本円周方向等間隔に配置され、ヒータ5の両端部が環状の止め具6に挿通されて支持されており、これら2つの環状の止め具6が外筒2の外側まで貫通して半径方向および軸方向に配置される固定ボルト7によって締付けて固定するようになっている。
【0004】
そして、ヒータ5への電力の供給のため加熱室4内のヒータ5に一端部が接続されたパワーリード8が外筒2の外部に導き出されて端子9に接続され、この端子9に図示しない電力ハーネスが接続されるようになっている。
【0005】
【発明が解決しようとする課題】
このような宇宙用の電気炉では、ロケットなどで打上げる際に振動が加わっても破損しないようにする必要があり、たとえばヒータ5を固定ボルト7で強固に固定する必要があるが、これら固定ボルト7を太くすると、この部分からの熱損失が大きくなり、1600℃以上の高温まで加熱しようとすると多大な電力が必要になるという問題がある。
【0006】
また、これまでは宇宙での実験期間が比較的短かくヒータ5の交換などメンテナンスを考える必要がなかったが、これから計画されている宇宙ステーションでは数か月以上の長期間の運用が予定され、ヒータ5の交換等の必要が生じる。
【0007】
ところが、ヒータ5を交換しようとすると、外筒2の外側の固定ボルト7を外すとともに、電力供給用のパワーリード8も取り外さなければならず、作業が煩雑であり、限られた時間の宇宙実験を遅滞させるという問題がある。
【0008】
また、新たなヒータ5を取付けようとすると、2つの環状の止め具6のボルト孔を固定ボルト7の位置に合わせるようにしなければならず、その位置合わせも煩雑であり、無重力ないし微少重力環境下での作業は一層大変となるという問題がある。
【0009】
この発明はかかる従来技術の問題点に鑑みてなされたもので、打上げ時の振動などに対する強度を確保すると同時に、熱損失を極力抑えることができ、しかもヒータの交換などのメンテナンスも容易な宇宙用電気炉を提供しようとするものである。
【0010】
【課題を解決するための手段】
上記問題点を解決するためこの発明の請求項1記載の宇宙用電気炉は、宇宙空間に打上げて使用される電気炉のヒータの両端部をそれぞれ環状の止め具に支持し、これら止め具を半径方向および軸方向の固定ボルトで中間筒または蓋板に取付け、この中間筒の外周に断熱フォイルを介して外筒を設けるとともに、この外筒に前記中間筒を支持したことを特徴とするものである。
【0011】
また、この発明の請求項2記載の宇宙用電気炉は、請求項1記載の構成に加え、前記電気炉のヒータに電力を供給しかつヒータを位置決めする連結端子を嵌合凸部と嵌合凹部で構成し、これら嵌合凸部と嵌合凹部を前記中間筒と外筒との間に着脱可能に設けたことを特徴とするものである。
【0012】
【作用】
この発明の請求項1記載の宇宙用電気炉によれば、外筒の内側に中間筒を配置してヒータを支持する環状の止め具を半径方向および軸方向の固定ボルトで支持し、しかも中間筒を断熱フォイルを介して外筒に支持するようにしており、止め具の固定ボルトが外筒まで貫通しないようにして熱損失を極力抑えると同時に、柔構造の断熱フォイルを介して中間筒を支持することで打上げ時の振動などの吸収ができるようにしている。
【0013】
さらに、中間筒ごとヒータの交換ができるようになり、メンテナンスも容易となる。
【0014】
また、この発明の請求項2記載の宇宙用電気炉によれば、請求項1の構成に加え、ヒータへの電力供給用の連結端子を中間筒と外筒との間に設けて嵌合凸部と嵌合凹部で着脱できるようにしており、電気的な接続が簡単にできるとともに、ヒータの位置決めもでき、簡単にヒータの交換などのメンテナスを行うことができるようになる。
【0015】
【実施例】
以下、この発明の一実施例を図面に基づき詳細に説明する。図1および図2はこの発明の宇宙用電気炉の一実施例にかかり、図1は縦断面図、図2は図1中のA−A断面図および連結端子部分の拡大図である。
【0016】
この宇宙用電気炉10では、内筒11とその外側を覆う外筒12との間に底無し円筒状の中間筒13が配置されて三重構造とされ、内筒11の内側に円筒状の加熱室14が形成されている。そして、三重構造の外側の外筒12は円筒側板12a,12bが上下2分割構造とされてフランジ部12cでボルトで連結されるとともに、両端部にそれぞれ蓋板12d,12eがフランジ部12fを介して連結されるようになっている。
【0017】
これら内筒11と中間筒13との間および内筒11の軸方向両端の外側には、鏡面の金属フィルムをわずかな間隔を明けて巻いた断熱用の断熱フォイル15が介装されるとともに、これら断熱フォイル15の外側を覆うように円筒部と両端部に分割した断熱用の断熱フォイル16が介装され、中間筒13と外筒12との間を断熱して加熱室14からの熱損失を極力防止するようになっている。
【0018】
この加熱室14内には、棒状のヒータ17が円周方向等間隔に配置され、その軸方向両端部が環状の止め具18に取付けられた碍子18aに嵌着されて支持されている。そして、ヒータ17が支持された環状の止め具18は、半径方向等間隔に4本配置された固定ボルト19によって中間筒13の外側で固定されるとともに、軸方向外側に配置された固定ボルト20によって外筒12の蓋板12d,12eの外側で固定されている。これらヒータ17の止め具18を固定する軸方向の固定ボルト20は、その頭部内側が円錐状に形成してあり、蓋板12d,12e側の円錐面に接触させて締付けることで固定ボルト20の頭部内面への応力集中を防止するようにしてある。
【0019】
このような内筒11および中間筒13がヒータ17の止め具18を介して一体に連結されたのち、外筒12との固定は、次のようにして行われる。
【0020】
中間筒13の両端面にそれぞれ上下2つでリング状となるフォイルサポート21の内周部が当られてビス22で固定され、これらフォイルサポート21の表面に蓋板12d,12eにねじ込んだ支持ボルト23の先端を当ることで軸方向の支持を行うようにしてある。また、中間筒13の外周と外筒14との間に円筒部を上下2分割とした断熱フォイル16がそれぞれ充填され、この断熱フォイル16によって中間筒13の半径方向の支持を行うようにしてある。
【0021】
したがって、外筒12の蓋板12d,12eに固定してある軸方向の固定ボルト20を外し、これらの蓋板12d,12eをフランジ部12fから取り外すとともに、円筒側板12a,12bのフランジ部12cのボルトを外し、円筒側板12aの上側および断熱フォイル16の上側を取り除くことで、半径方向の固定ボルト19を取付けた状態で、中間筒13および内筒11をヒータ17とともに一体に連結した状態で外部に取り出すことができる。
【0022】
これにより、中間筒13ごとヒータ17を交換することができ、ヒータ17のメンテナンスを容易に行うことができる。
【0023】
また、ヒータ17を中間筒13を介して半径方向の固定ボルト19で固定するようにして直接外筒12まで固定ボルトが貫通しないようにしているので、加熱室14からの放熱を極力抑えることができ、加熱室14内を多大な電力供給なしに1600℃以上の高温に保つことができる。
【0024】
さらに、中間筒13の半径方向の支持を断熱フォイル16を介して外筒12に支持するようにしているので、従来の固定ボルトによる支持に比べて柔軟性があり、ロケットなどによる打上げ時の振動などを断熱フォイル16によって吸収することができ、損傷を防止することができる。
【0025】
このように外筒12に対して着脱することができる中間筒13の外側には、図1および図2に示すように、ヒータ17への電力供給用の連結端子24を構成する円柱状の嵌合凸部24aが下方に突出して2つ取付けられており、ヒータ17のパワーリード25が接続されている。
【0026】
一方、この嵌合凸部24aに対応する外筒12の内側に嵌合凸部24aが嵌合される円筒状の嵌合凹部24bが2つ取付けてあり、これら嵌合凸部24aと嵌合凹部24bとで連結端子24が構成される。そして、嵌合凹部24bは外筒12の外側に形成された端子26と電気的に接続され、端子26に接続される図示しない電力ハーネスから電力が供給されるようになっている。
【0027】
これら嵌合凸部24aの円柱状の外周部と嵌合凹部24bの円筒状の内周部には電気的な接触抵抗を小さくするため銀めっき等が施してあるとともに、互いを嵌合状態に保持できるようにそれぞれの寸法が定められ弾性力が加わるようにしてある。
【0028】
したがって、中間筒12ごとヒータ17を装着する場合に、連結端子24を構成する嵌合凸部24aを外筒12の嵌合凹部24bに嵌合することで、ボルトの着脱を行うこと無くヒータ17と電力ハーネスとの電気的接続が自動的にできるとともに、嵌合凸部24aと嵌合凹部24bとを嵌合して連結することから、中間筒13を外筒12に対して位置決めすることができ、ボルトによる締め付けも簡単となり、メンテナスが容易となる。
【0029】
なお、連結端子を構成する嵌合凹凸部の形状は円柱状と円筒状に限らず、断面V字状の突起と断面V字状の溝など互いを嵌合して電気的な接続状態を得ることができるとともに、中間筒を外筒に対して一定の位置に位置決めすることができるものであれば良い。
【0030】
【発明の効果】
以上、一実施例とともに具体的に説明したようにこの発明の請求項1記載の宇宙用電気炉によれば、外筒の内側に中間筒を配置してヒータを支持する環状の止め具を半径方向および軸方向の固定ボルトで支持し、しかも中間筒を断熱フォイルを介して外筒に支持するようにしたので、止め具の固定ボルトが外筒まで貫通しないようにして熱損失を極力抑えると同時に、柔構造の断熱フォイルを介して中間筒を支持しているので、打上げ時の振動などの吸収ができ、損傷を防止することができる。
【0031】
さらに、中間筒ごとヒータの交換ができので、メンテナンスも容易となり、宇宙ステーションでの長期間の使用も可能となる。
【0032】
また、この発明の請求項2記載の宇宙用電気炉によれば、請求項1の構成に加え、ヒータへの電力供給用の連結端子を中間筒と外筒との間に設けて嵌合凸部と嵌合凹部で着脱できるようにしたので、電気的な接続が簡単にできるとともに、ヒータの位置決めもでき、簡単にヒータの交換などのメンテナスを行うことができる。
【図面の簡単な説明】
【図1】 この発明の宇宙用電気炉の一実施例にかかる縦断面図である。
【図2】 この発明の宇宙用電気炉の一実施例にかかる図1中のA−A断面図および連結端子部分の拡大図である。
【図3】 従来の宇宙用電気炉の縦断面図である。
【図4】 従来の宇宙用電気炉の図3中のB−B断面図である。
【符号の説明】
10 宇宙用電気炉
11 内筒
12 外筒
13 中間筒
14 加熱室
15,16 断熱フォイル
17 ヒータ
18 止め具
19,20 固定ボルト
24 連結端子
24a 嵌合凸部
24b 嵌合凹部
[0001]
[Industrial application fields]
The present invention relates to a space electric furnace that is launched into outer space and used for experiments, etc., while facilitating the maintenance, ensuring the strength to suppress heat loss as much as possible and to withstand vibrations during launch. is there.
[0002]
[Prior art]
Development of materials that cannot be done on the ground using the high vacuum state and weightless state in outer space is being carried out. For this reason, experimental electric furnaces are launched into outer space with rockets and used.
[0003]
As shown in FIGS. 3 and 4, for example, an electric furnace made for use in outer space has a double-cylinder structure composed of an inner cylinder 1 and an outer cylinder 2 covering the outside thereof. , 2 is provided with a heat insulating foil 3 in which a mirror-like metal film is wound with a slight gap, and the inside of the inner cylinder 1 is a heating chamber 4. A plurality of rod-like heaters 5 are arranged in the heating chamber 4 at equal intervals in the circumferential direction, and both end portions of the heater 5 are inserted and supported by annular stoppers 6. The tool 6 penetrates to the outside of the outer cylinder 2 and is fastened and fixed by fixing bolts 7 arranged in the radial direction and the axial direction.
[0004]
A power lead 8 having one end connected to the heater 5 in the heating chamber 4 for supplying power to the heater 5 is led to the outside of the outer cylinder 2 and connected to the terminal 9. The power harness is connected.
[0005]
[Problems to be solved by the invention]
In such an electric furnace for space use, it is necessary to prevent damage even if vibration is applied when it is launched by a rocket or the like. For example, the heater 5 must be firmly fixed with a fixing bolt 7. When the bolt 7 is thickened, heat loss from this portion increases, and there is a problem that a large amount of electric power is required to heat to a high temperature of 1600 ° C. or higher.
[0006]
Also, until now, the experiment period in space was relatively short and it was not necessary to consider maintenance such as replacing the heater 5, but the planned space station will be operated for a long period of more than several months. The heater 5 needs to be replaced.
[0007]
However, if the heater 5 is to be replaced, the fixing bolt 7 outside the outer cylinder 2 must be removed, and the power lead 8 for power supply must be removed, which is cumbersome and requires a limited time space experiment. There is a problem of delaying.
[0008]
Further, when a new heater 5 is to be installed, the bolt holes of the two annular stoppers 6 must be aligned with the positions of the fixing bolts 7, and the alignment is complicated, and there is no gravity or a microgravity environment. There is a problem that the work below becomes more difficult.
[0009]
The present invention has been made in view of the problems of the prior art, and is capable of ensuring the strength against vibration during launch, and at the same time, can suppress heat loss as much as possible, and can easily perform maintenance such as heater replacement . An electric furnace is to be provided.
[0010]
[Means for Solving the Problems]
In order to solve the above problems , the electric furnace for space according to claim 1 of the present invention supports both ends of the heater of the electric furnace, which is used by being launched in outer space, by annular stoppers, Attached to an intermediate cylinder or a cover plate with fixing bolts in the radial direction and axial direction, an outer cylinder is provided on the outer periphery of the intermediate cylinder via a heat insulating foil, and the intermediate cylinder is supported on the outer cylinder It is.
[0011]
Also, space for an electric furnace according to claim 2 of the present invention, in addition to the configuration of claim 1, wherein a fitting protrusion connecting terminals for positioning the supplying power to the heater of the electric furnace and heaters fitted It comprises a concave part, and these fitting convex parts and fitting concave parts are detachably provided between the intermediate cylinder and the outer cylinder.
[0012]
[Action]
According to the electric furnace for space according to claim 1 of the present invention, the intermediate stopper is arranged inside the outer cylinder and the annular stopper for supporting the heater is supported by the fixing bolts in the radial direction and the axial direction. The cylinder is supported on the outer cylinder via the heat insulation foil, and the fixing bolt of the stopper is not penetrated to the outer cylinder to suppress heat loss as much as possible.At the same time, the intermediate cylinder is attached via the heat insulation foil of the flexible structure. By supporting it, it is possible to absorb vibrations during launch.
[0013]
Further, the heater can be exchanged together with the intermediate cylinder, and maintenance is facilitated.
[0014]
According to the space electric furnace of claim 2 of the present invention, in addition to the structure of claim 1, a connecting terminal for supplying power to the heater is provided between the intermediate tube and the outer tube, and the fitting convexity is provided. It is possible to attach and detach with a fitting recess and a fitting, so that electrical connection can be made easily, the heater can be positioned, and maintenance such as replacement of the heater can be easily performed.
[0015]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 1 and 2 relate to one embodiment of a space electric furnace according to the present invention. FIG. 1 is a longitudinal sectional view, and FIG. 2 is an AA sectional view and an enlarged view of a connecting terminal portion in FIG.
[0016]
In this space electric furnace 10 , a bottomless cylindrical intermediate cylinder 13 is arranged between an inner cylinder 11 and an outer cylinder 12 covering the outside thereof to form a triple structure, and a cylindrical heating chamber inside the inner cylinder 11. 14 is formed. The outer cylinder 12 of the triple structure has cylindrical side plates 12a and 12b divided into two vertically and is connected by bolts at the flange portion 12c, and lid plates 12d and 12e are respectively connected to both ends via the flange portion 12f. Are connected.
[0017]
Between the inner cylinder 11 and the intermediate cylinder 13 and on the outside of both ends in the axial direction of the inner cylinder 11, a heat insulating foil 15 for heat insulation in which a mirror-like metal film is wound at a slight interval is interposed, A heat insulating foil 16 for heat insulation divided into a cylindrical portion and both end portions is interposed so as to cover the outside of these heat insulating foils 15, and heat is lost from the heating chamber 14 by insulating heat between the intermediate tube 13 and the outer tube 12. Is to prevent as much as possible.
[0018]
In the heating chamber 14, rod-shaped heaters 17 are arranged at equal intervals in the circumferential direction, and both end portions in the axial direction are fitted and supported by insulators 18 a attached to an annular stopper 18. The annular stopper 18 on which the heater 17 is supported is fixed outside the intermediate cylinder 13 by four fixing bolts 19 arranged at equal intervals in the radial direction, and the fixing bolt 20 arranged outside in the axial direction. Is fixed outside the cover plates 12d and 12e of the outer cylinder 12. The axial fixing bolts 20 for fixing the stoppers 18 of the heaters 17 are formed in a conical shape on the inner side of the head, and the fixing bolts 20 are tightened by being brought into contact with the conical surfaces on the side of the cover plates 12d and 12e. The stress concentration on the inner surface of the head is prevented.
[0019]
After the inner cylinder 11 and the intermediate cylinder 13 are integrally connected via the stopper 18 of the heater 17, the fixing to the outer cylinder 12 is performed as follows.
[0020]
Support bolts screwed into cover plates 12d and 12e on the surface of the foil support 21 are fixed with screws 22 to the inner peripheral portion of the ring support 21 in the form of two rings on the upper and lower sides of the intermediate cylinder 13 respectively. By supporting the tip of 23, axial support is performed. Further, a heat insulating foil 16 having a cylindrical portion divided into upper and lower portions is filled between the outer periphery of the intermediate tube 13 and the outer tube 14, and the heat insulating foil 16 supports the intermediate tube 13 in the radial direction. .
[0021]
Accordingly, the axial fixing bolts 20 fixed to the cover plates 12d and 12e of the outer cylinder 12 are removed, the cover plates 12d and 12e are removed from the flange portion 12f, and the flange portions 12c of the cylindrical side plates 12a and 12b are removed. The bolts are removed, and the upper side of the cylindrical side plate 12a and the upper side of the heat insulating foil 16 are removed, so that the intermediate cylinder 13 and the inner cylinder 11 are integrally connected together with the heater 17 with the radial fixing bolt 19 attached. Can be taken out.
[0022]
Thereby, the heater 17 can be replaced together with the intermediate cylinder 13, and the maintenance of the heater 17 can be easily performed.
[0023]
In addition, since the heater 17 is fixed by the fixing bolt 19 in the radial direction through the intermediate cylinder 13 so that the fixing bolt does not directly penetrate to the outer cylinder 12, heat radiation from the heating chamber 14 can be suppressed as much as possible. The heating chamber 14 can be kept at a high temperature of 1600 ° C. or higher without supplying a large amount of power.
[0024]
Further, since the radial support of the intermediate cylinder 13 is supported by the outer cylinder 12 via the heat insulating foil 16, it is more flexible than the support by the conventional fixing bolt and the vibration at the time of launching by a rocket or the like. Etc. can be absorbed by the heat insulating foil 16, and damage can be prevented.
[0025]
As shown in FIGS. 1 and 2, a cylindrical fitting that constitutes a connection terminal 24 for supplying power to the heater 17 is provided outside the intermediate cylinder 13 that can be attached to and detached from the outer cylinder 12 in this manner. Two joint protrusions 24a protrude downward and are attached, and the power lead 25 of the heater 17 is connected.
[0026]
On the other hand, two cylindrical fitting recesses 24b, into which the fitting projections 24a are fitted, are attached to the inside of the outer cylinder 12 corresponding to the fitting projections 24a. The connection terminal 24 is configured by the recess 24b. And the fitting recessed part 24b is electrically connected with the terminal 26 formed in the outer side of the outer cylinder 12, and electric power is supplied from the electric power harness which is connected to the terminal 26 (not shown).
[0027]
The cylindrical outer peripheral portion of the fitting convex portion 24a and the cylindrical inner peripheral portion of the fitting concave portion 24b are subjected to silver plating or the like to reduce electrical contact resistance, and are brought into a fitted state. Each dimension is determined so that it can be held, and an elastic force is applied.
[0028]
Therefore, when the heater 17 is mounted together with the intermediate cylinder 12, the heater 17 can be mounted without attaching / detaching the bolt by fitting the fitting convex part 24 a constituting the connecting terminal 24 into the fitting concave part 24 b of the outer cylinder 12. Since the electrical connection between the electric power harness and the electric power harness can be automatically performed and the fitting convex portion 24a and the fitting concave portion 24b are fitted and connected, the intermediate cylinder 13 can be positioned with respect to the outer cylinder 12. Can be tightened with bolts, and maintenance is easy.
[0029]
In addition, the shape of the fitting uneven | corrugated part which comprises a connection terminal is not restricted to a column shape and a cylindrical shape, A fitting with each other, such as a V-shaped protrusion and a groove | channel of a cross-section, is obtained, and an electrical connection state is obtained. In addition, it is only necessary that the intermediate cylinder can be positioned at a fixed position with respect to the outer cylinder.
[0030]
【The invention's effect】
As described above in detail with reference to one embodiment, according to the electric furnace for space according to claim 1 of the present invention, the annular stopper that supports the heater by disposing the intermediate cylinder inside the outer cylinder has a radius. Since the intermediate cylinder is supported on the outer cylinder via the heat insulation foil, the heat loss is minimized by preventing the fixing bolt of the stopper from penetrating to the outer cylinder. At the same time, since the intermediate cylinder is supported via the heat insulating foil having a flexible structure, vibration during launching can be absorbed and damage can be prevented.
[0031]
Furthermore, since the heater can be exchanged together with the intermediate cylinder, maintenance becomes easy, and long-term use at the space station becomes possible.
[0032]
According to the space electric furnace according to claim 2 of the present invention, in addition to the structure of claim 1, a connecting terminal for supplying power to the heater is provided between the intermediate cylinder and the outer cylinder, and the fitting convexity is provided. Since it is possible to attach and detach with the fitting recess, the electrical connection can be simplified, the heater can be positioned, and maintenance such as replacement of the heater can be easily performed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view according to an embodiment of a space electric furnace of the present invention.
2 is a cross-sectional view taken along line AA in FIG. 1 and an enlarged view of a connecting terminal portion according to an embodiment of the electric furnace for space use of the present invention.
FIG. 3 is a longitudinal sectional view of a conventional space electric furnace .
4 is a cross-sectional view of the conventional electric furnace for space taken along line BB in FIG.
[Explanation of symbols]
10 Space electric furnace 11 Inner cylinder 12 Outer cylinder 13 Intermediate cylinder 14 Heating chamber 15, 16 Heat insulation foil 17 Heater 18 Stopper 19, 20 Fixing bolt 24 Connecting terminal 24a Fitting convex part 24b Fitting concave part

Claims (2)

宇宙空間に打上げて使用される電気炉のヒータの両端部をそれぞれ環状の止め具に支持し、これら止め具を半径方向および軸方向の固定ボルトで中間筒または蓋板に取付け、この中間筒の外周に断熱フォイルを介して外筒を設けるとともに、この外筒に前記中間筒を支持したことを特徴とする宇宙用電気炉。 Both ends of the heater of the electric furnace used for launching in outer space are supported by annular stoppers, and these stoppers are attached to the intermediate cylinder or the cover plate with radial and axial fixing bolts. A space electric furnace characterized in that an outer cylinder is provided on the outer periphery via a heat insulating foil, and the intermediate cylinder is supported on the outer cylinder . 前記電気炉のヒータに電力を供給しかつヒータを位置決めする連結端子を嵌合凸部と嵌合凹部で構成し、これら嵌合凸部と嵌合凹部を前記中間筒と外筒との間に着脱可能に設けたことを特徴とする請求項1記載の宇宙用電気炉A connecting terminal for supplying electric power to the heater of the electric furnace and positioning the heater is constituted by a fitting convex portion and a fitting concave portion, and the fitting convex portion and the fitting concave portion are arranged between the intermediate cylinder and the outer cylinder. The space electric furnace according to claim 1, wherein the space electric furnace is detachably provided.
JP14804995A 1995-05-23 1995-05-23 Space electric furnace Expired - Fee Related JP3810829B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14804995A JP3810829B2 (en) 1995-05-23 1995-05-23 Space electric furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14804995A JP3810829B2 (en) 1995-05-23 1995-05-23 Space electric furnace

Publications (2)

Publication Number Publication Date
JPH08313168A JPH08313168A (en) 1996-11-29
JP3810829B2 true JP3810829B2 (en) 2006-08-16

Family

ID=15444008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14804995A Expired - Fee Related JP3810829B2 (en) 1995-05-23 1995-05-23 Space electric furnace

Country Status (1)

Country Link
JP (1) JP3810829B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1425173T3 (en) * 2001-09-13 2008-06-02 Gallus Ferd Rueesch Ag Hot stamping cylinder
CN109798771A (en) * 2019-01-31 2019-05-24 中国航发动力股份有限公司 One kind testing heating device for aero-engine turbine disk low cycle fatigue life
RU207585U1 (en) * 2021-04-20 2021-11-02 Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Heater for laboratory cylindrical electric furnace

Also Published As

Publication number Publication date
JPH08313168A (en) 1996-11-29

Similar Documents

Publication Publication Date Title
KR910002990B1 (en) Core spring support system for a dynamo electric machine
KR20010013902A (en) Device for fixing a glass panel to a support at the side of a building
JP3810829B2 (en) Space electric furnace
US8303711B2 (en) Electrode anchoring structure in crystal-growing furnaces
US3249675A (en) Electrode holder for high temperature heating apparatus furnace
CN109708461B (en) Insulated external mounting assembly for liner heating belt and high-temperature sintering furnace
US5397954A (en) Elastic support device for stator winding end turns
US3300566A (en) Electric furnaces
US5459748A (en) Apparatus and method for electrically heating a refractory lined vessel by directly passing current througth an electrically conductive refractory via a resilient electrote assembly
CN210606654U (en) Critical heat flux density enhancement test device
KR100371067B1 (en) Assembly method of layered support and angle iron for manufacturing electrical insulator
US4462104A (en) Electrode holder for electric arc furnaces
US3647924A (en) High-temperature furnace for melting materials in space
JPH0557704B2 (en)
CN110822903A (en) Electric heating furnace body
KR960006599B1 (en) Mosi2 heater attaching device for electric furnace
US4720838A (en) Contact connection between a contact electrode and a cooling medium and a current supply lines for an electrical melting furnace
US20230067074A1 (en) Connection unit
KR910009054B1 (en) Plate assemblies for sliding gate valves for metallurgical vessels
CA1198760A (en) Electrode holder for arc furnaces
JPS6132320Y2 (en)
JP2557173Y2 (en) Space heating furnace structure
SU806313A1 (en) Method and apparatus for connecting tubes to tube walls
CN211451970U (en) Pre-heater before tower
US4194079A (en) Heating element and electrode assembly for high temperature furnaces

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20051005

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060309

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20060404

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060404

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20060404

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060523

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060525

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090602

Year of fee payment: 3

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090602

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100602

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110602

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120602

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120602

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130602

Year of fee payment: 7

LAPS Cancellation because of no payment of annual fees