JPH0350496A - Manufacture of high temperature heat pipe using oxidizable heat resistant metal container - Google Patents
Manufacture of high temperature heat pipe using oxidizable heat resistant metal containerInfo
- Publication number
- JPH0350496A JPH0350496A JP18435389A JP18435389A JPH0350496A JP H0350496 A JPH0350496 A JP H0350496A JP 18435389 A JP18435389 A JP 18435389A JP 18435389 A JP18435389 A JP 18435389A JP H0350496 A JPH0350496 A JP H0350496A
- Authority
- JP
- Japan
- Prior art keywords
- container
- heat
- resistant
- nozzle
- heated
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 36
- 239000000919 ceramic Substances 0.000 claims description 6
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 239000004519 grease Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000012611 container material Substances 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 229910001026 inconel Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- YUSUJSHEOICGOO-UHFFFAOYSA-N molybdenum rhenium Chemical compound [Mo].[Mo].[Re].[Re].[Re] YUSUJSHEOICGOO-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- -1 was used Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- GFUGMBIZUXZOAF-UHFFFAOYSA-N niobium zirconium Chemical compound [Zr].[Nb] GFUGMBIZUXZOAF-UHFFFAOYSA-N 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、高温域で作動する高温用ヒートパイプの！
ｌ！７造方法に関するものである。[Detailed Description of the Invention] Industrial Field of Application This invention relates to a high-temperature heat pipe that operates in a high-temperature range.
l! This is related to the 7-making method.
従来の技術
作動流体として、液体ナトリウムや液体リヂウム等の液
体金属を用いた高温用ヒートパイプの製造工程には、ヒ
ートバイプコンテナー内の油脂汚れ等を除去するために
、このヒートパイブコンテナーを７００〜８００℃まで
昇渇する加熱ベーキング工程と、加熱ベーキング工程を
行なった後、コンテナー内に作動ｖＬ体を注入して同じ
く７００〜８００”Ｃに昇温し、作動流体の蒸気圧でコ
ンテナー内の非凝縮性ガスを排除する動作排気工程とを
行なう必要がある。Conventional technology: In the manufacturing process of high-temperature heat pipes that use liquid metals such as liquid sodium and liquid lidium as working fluids, heat pipe containers are heated to After performing the heating baking process, which raises the temperature to 800°C, and the heating baking process, the working VL body is injected into the container, and the temperature is also raised to 700-800''C, and the vapor pressure of the working fluid causes the non-container inside the container to rise. It is necessary to perform an operational evacuation step to eliminate condensable gases.
したがって、従来においては、例えば液体ナトリウムを
作１７Ｊ流体とする高温用ヒートバイブを製造する場合
には、コンテナー材としてステンレス鋼またはインコネ
ル（Ｎｉ−ｃｒ−ｒ”ｅ系合金）のような耐酸化性を備
えた耐熱合金を用いていた。Therefore, in the past, when manufacturing a high-temperature heat vibrator using liquid sodium as the fluid, for example, the container material was made of oxidation-resistant material such as stainless steel or Inconel (Ni-cr-r"e alloy). A heat-resistant alloy with
この耐酸化性を備えた耐熱合金であるステンレス鋼やイ
ンコネルは、耐酸化性に浸れているため空気中で加熱し
た場合、ステンレス鋼は８００℃程度まで、またインコ
ネルは１ ０００℃程反までそれぞれ問題なく加熱でき
る。したがって、８００℃以下または１ ０００℃以下
の温度領域で作動させる液体ナトリウム等を作！ＦＩＪ
流体とする高温用ヒートパイプのコンテナー材として使
用されていた。Stainless steel and Inconel, which are heat-resistant alloys with this oxidation resistance, are oxidation resistant, so when heated in air, stainless steel can be heated up to about 800℃, and Inconel can be heated up to about 1000℃. It can be heated without any problem. Therefore, we have created a liquid sodium product that operates in a temperature range of 800℃ or lower or 1000℃ or lower! F.I.J.
It was used as a container material for high-temperature heat pipes that use fluids.
発明が解決しようとする課題
しかし、前述のコンテナー材としてステンレス鋼あるい
はインコネルを使用した従来の高温用ヒ一トパイブの場
合には、それぞれの銅熱合金の使用温度限界がステンレ
ス鋼の場合には約８００℃、またインコネルの場合には
約１ ０００℃であり、そのため、さらに高温の領域で
作動させるヒートパイプを製作するためには、コンテナ
ー材として、タングステン（Ｗ）またはモリブデン（Ｍ
０）等の耐熱純金属や、ニオブー１％ジルコニウム（Ｎ
ｂ− ＩＸｚｒ）あるいはモリブデンーレニウム（Ｍｏ
Ｒｅ）等の耐熱合金を使用しなければならない。Problems to be Solved by the Invention However, in the case of conventional high-temperature heat pipes that use stainless steel or Inconel as the container material, the operating temperature limit of each copper thermal alloy is approximately 800°C, or about 1000°C in the case of Inconel. Therefore, in order to manufacture a heat pipe that operates in an even higher temperature range, tungsten (W) or molybdenum (M) is used as the container material.
0), heat-resistant pure metals such as niobium 1% zirconium (N
b- IXzr) or molybdenum-rhenium (Mo
A heat-resistant alloy such as Re) must be used.
ところが、これらの耐熱純金属および耐熱合金は耐酸化
性に劣り、空気中において３００〜４００℃に加熱する
と激しく酸化してしまう。そのため、７００〜８００℃
に加熱する工程を有する従来の製造方法では、これらの
耐熱純金属おＪ：び耐熱合金をコンテナー材として用い
た高温用ヒートバイブを製作することができなかった。However, these heat-resistant pure metals and heat-resistant alloys have poor oxidation resistance, and are violently oxidized when heated to 300 to 400°C in air. Therefore, 700-800℃
Conventional manufacturing methods that include a heating step have not been able to produce high-temperature heat vibrators using these heat-resistant pure metals and heat-resistant alloys as container materials.
この発明は上記事情に兎みなされたもので、嗣熱純金属
あるいは耐熱合金をコンテナー材として用い、例えば１
０００℃以上の高温領域で作動させることのできる高
温用ヒートパイプの製造方法を提供することを目的とし
ている。This invention has been made in consideration of the above circumstances, and uses pure metal or heat-resistant alloy as a container material, for example,
It is an object of the present invention to provide a method for manufacturing a high-temperature heat pipe that can be operated in a high-temperature range of 000°C or higher.
課題を解決するための手段
上記の目的を達或するためにこの発明の方法は、酸化し
易い耐熱耗金属あるいは合金等の耐熱金属で形或したコ
ンテナー内に液体金属等の沸点の高い作動流体を封入し
た高温用ヒートパイブの製造方法において、前記コンテ
ナーを、一端が閉塞され他端に小径のノズル部が設けら
れた管状に形成し、そのノズル部の先端に耐酸化性を備
えた耐熱金Ｂ製の延長ノズルを気密に接続するとともに
、このコンテナーを耐熱容器内に、前記延長ノズルの先
端側を外部へ気密に延出した状態で￥１容し、先ず前記
耐熱容器内およびコンテナー内を真空状態とし、次にこ
の耐熱容器の外側から加熱して内部のコンテナーに対し
て真空ベーキング工程を行なった後、前記延長ノズルよ
りコンテナー内に作初流体を注入し、再び加熱して動作
排気工程を行なうことを特徴としている。Means for Solving the Problems In order to achieve the above-mentioned objects, the method of the present invention involves storing a working fluid with a high boiling point such as a liquid metal in a container formed of a heat-resistant metal such as a heat-resistant metal or an alloy that is easily oxidized. In the method for manufacturing a high-temperature heat pipe, the container is formed into a tube shape with one end closed and a small diameter nozzle section provided at the other end, and a heat-resistant metal B having oxidation resistance is attached to the tip of the nozzle section. At the same time, the container is placed in a heat-resistant container with the tip side of the extension nozzle airtightly extended to the outside, and the inside of the heat-resistant container and the container are first evacuated. Then, after heating the heat-resistant container from the outside and performing a vacuum baking process on the inner container, the initial production fluid is injected into the container from the extension nozzle, heated again, and an operation exhaust process is performed. It is characterized by doing.
また、前記真空ベーキング工程および動作排気工程を行
ない、作動流体を封入した後、コンテナ一の外周面全体
にセラミック溶射膜を形成することを特徴としている。Moreover, after performing the vacuum baking process and the operational exhaust process and sealing in the working fluid, a ceramic spray coating is formed on the entire outer peripheral surface of the container.
作 用
上記の製造方法によれば、酸化し易い耐熱金属で形或し
たコンテナーを耐熱容器内に収容し、このコンテナーの
ノズル部の先端にＮき′足された旺長ノズルの部分を前
記耐熱容器の外部に気密に延出させた後、耐熱容器内お
よびコンテナー内の空気を排除して真空にする。次に、
耐熱容器内に収容したこのコンテナーを容器の外側から
ＩＪロ然して真空ベーキング工程を行なって油脂分等を
分解除去し、次いで延長ノズルからコンテナー内に作動
流体を注入し、加熱して動作徘気工程を行なってコンテ
ナー内の非凝縮性ガスを排除した後、前記延長ノズルの
部分を押し潰して１４止する。そして、コンテナーを耐
熱容器から取出し、コンテナーのノズル部を押し潰して
封止するとともにこのノズル部の先端側で切断して高渇
用ヒートバイプが完成する。Effect: According to the above manufacturing method, a container made of a heat-resistant metal that is easily oxidized is housed in a heat-resistant container, and the long nozzle portion with N added to the tip of the nozzle portion of the container is placed in the heat-resistant container. After the container is airtightly extended to the outside, air inside the heat-resistant container and the container is removed to create a vacuum. next,
This container housed in a heat-resistant container is subjected to a vacuum baking process using IJ from the outside of the container to decompose and remove fats and oils, and then a working fluid is injected into the container from an extended nozzle and heated to complete the operation aeration process. After removing the non-condensable gas in the container, the extended nozzle portion is crushed and stopped at 14. Then, the container is taken out from the heat-resistant container, the nozzle part of the container is crushed and sealed, and the nozzle part is cut at the tip side to complete the high-dry heat vip.
また、完成した前記高温用ヒートパイプのコンテナーの
外周面の全体に、プラズマ溶剤等により炭化けい素等の
セラミックの被膜を形成すれば、コンテナーの表面の酸
化が防止されるので、高温の酸化雰囲気中においても使
用できる高温用ヒートバイプとずることができる。In addition, if a ceramic film such as silicon carbide is formed on the entire outer circumferential surface of the container of the completed high-temperature heat pipe using a plasma solvent, etc., oxidation of the surface of the container can be prevented. It can also be used as a high-temperature heat vip that can be used inside.
実 施 例
以下、耐熱純金属であるタングステン製のコンテナーを
用い、作動流体として液体ナトリウムを封入した、約１
０００〜１３００℃で作動させる高温用ヒートパイプの
製造方法の一実施例を第１図ないし第５図に基づいて説
明する。In the following example, a container made of tungsten, a heat-resistant pure metal, was used, and liquid sodium was sealed as the working fluid.
An embodiment of a method for manufacturing a high temperature heat pipe operated at a temperature of 000 to 1300°C will be described with reference to FIGS. 1 to 5.
高温用ヒートパイプのコンテナー１は純タングステン製
で、円筒状に形成されており、その一端が閉塞されると
ともに、他端には小径で短いノズル部１ａが一体に形成
されており、このノズル部１ａの先端には、ノズル部１
ａと同じ太さのステンレスｒｌ４製の延長ノズル２が、
突き合せた互いの端部をＴＩＧ溶接１ｂによって気密に
接続されている。The container 1 of the high-temperature heat pipe is made of pure tungsten and is formed into a cylindrical shape.One end of the container 1 is closed, and the other end is integrally formed with a small diameter and short nozzle portion 1a. At the tip of 1a, there is a nozzle part 1
Extension nozzle 2 made of stainless steel RL4 with the same thickness as a,
The abutted ends are hermetically connected by TIG welding 1b.
また、前記コンテナー１は耐熱容器３内に収容された状
態で、真空ベーキング工程、作動流体注入工程および動
作排気工程等を行なうもので、このコンテナー１を収容
する耐熱容器３はステンレス鋼製で、コンテナー１より
一回り大径で長さも若干長い有底円簡状を呈し、その底
部３ａの中火には、コンテナー１のノズル部１ａに接続
された延長ノズル２の先端側を挿通づる神通孔３ｂが開
口しており、またコンテナー１の挿入口となる開放端３
Ｃは舊４によって閉塞できるようになっている。さらに
、この耐熱容器３の底部近傍の周檗には、容器内の空気
を抜き取る際に真空ボンブ（図示せず）の配＠５を接続
する抜気口３ｄが設けられている。Further, the container 1 is housed in a heat-resistant container 3 to perform a vacuum baking process, a working fluid injection process, an operation exhaust process, etc. The heat-resistant container 3 housing this container 1 is made of stainless steel, It has a circular shape with a bottom, which is one size larger in diameter and slightly longer than the container 1, and has a hole in the bottom 3a of which the tip of the extension nozzle 2 connected to the nozzle part 1a of the container 1 is inserted. 3b is open, and the open end 3 serves as an insertion opening for the container 1.
C can be blocked by the 4th ridge. Furthermore, an air vent 3d is provided in the periphery near the bottom of the heat-resistant container 3 to which a vacuum bomb (not shown) is connected when removing air from the container.
次に、上述した純タングステン製のコンテナー１に、耐
熱容器３を用いて作動流体を１４人する高温用ヒートバ
イブの製造工程を第２図ないし第５図に基づいて説明す
る。Next, the manufacturing process of a high-temperature heat vibrator in which 14 working fluids are supplied to the pure tungsten container 1 using the heat-resistant container 3 will be explained based on FIGS. 2 to 5.
開放端３Ｃから耐熱容器３内にコンテナー１を挿入して
、Ｍ．部３ａの挿通孔３ｂから外部へ、延長ノズル２の
先端側を延出さじる。次に、開放端３Ｃに益４を被者す
るとともに、この益４の全周を耐熱容器３の外周面にＴ
ＩＧ溶接して気密に閉塞し、さらに、延長ノズル２を挿
通した前記挿通？｛，３ｂは、延長ノズル２の周囲の間
隙を埋めるようにＴＩＧ溶接２ａによって気密に閉塞し
、耐熱容器３を密閉する。Insert the container 1 into the heat-resistant container 3 from the open end 3C. The distal end side of the extension nozzle 2 is extended to the outside from the insertion hole 3b of the portion 3a. Next, attach the mask 4 to the open end 3C, and attach the entire circumference of the mask 4 to the outer circumferential surface of the heat-resistant container 3.
IG welding to airtightly close the hole, and then insert the extension nozzle 2 into the hole. {, 3b is hermetically closed by TIG welding 2a so as to fill the gap around the extension nozzle 2, and the heat-resistant container 3 is hermetically sealed.
次いで、耐熱容器３の抜気口３ｄに、真空ポンプの配管
５を接続して容器３内の抜気を行ない、配管５に介設さ
れたバルブ５ａを閉じて容器３内を真空常態に保持プる
とともに、延長ノズル２を介してコンテナー１内の空気
を排除してコンテナー１内も真空状態とする。この状態
で、耐熱容器３の外側から加熱して内部のコンテナー１
を約７００〜８００℃まで昇温し、真空ベーキング工程
を行なって油脂分を除去する。この時、コンテナー１は
、その内部が真空であるとともに真空状態の耐熱容器３
内で加熱されるため、空気と全く触れず、酸化すること
なく加熱できる。この場合の加熱方法としては、例えば
誘導加熱法が適しており、また、通常の熱源による加熱
であっても、真空の耐熱容器３内のコンテナー１を輻射
熱で加熱ヅることかできる。Next, the piping 5 of a vacuum pump is connected to the vent port 3d of the heat-resistant container 3 to evacuate the inside of the container 3, and the valve 5a installed in the piping 5 is closed to maintain the inside of the container 3 in a normal vacuum state. At the same time, the air inside the container 1 is removed through the extension nozzle 2, and the inside of the container 1 is also brought into a vacuum state. In this state, the heat-resistant container 3 is heated from the outside and the inner container 1 is heated.
The temperature is raised to about 700 to 800°C, and a vacuum baking process is performed to remove fats and oils. At this time, the container 1 is in a vacuum state, and the heat-resistant container 3 is in a vacuum state.
Since it is heated internally, there is no contact with air and it can be heated without oxidation. As a heating method in this case, for example, an induction heating method is suitable, and the container 1 inside the vacuum heat-resistant container 3 can be heated by radiant heat even if heating is performed by a normal heat source.
真空ベーキング工程が終了した後、耐熱容器３から延出
している延長ノズル２から、コンテナー１内に作動流体
となる液体ナトリウムを注入し、その後、約７００〜８
００℃まで加熱して動作排気工程を行なって、コンテナ
ー１内の非凝縮性ガスを、延長ノズル２を介して排出さ
せる。この時も、前記真空ベーキング工程の時と同様に
、コンテナーを真空状態の耐熱容器３内で加熱するため
酸化することがない。After the vacuum baking process is completed, liquid sodium serving as a working fluid is injected into the container 1 from the extension nozzle 2 extending from the heat-resistant container 3, and then approximately
The container 1 is heated to 00° C. and an operational evacuation step is performed to discharge the non-condensable gas in the container 1 through the extension nozzle 2. At this time, as in the vacuum baking process, the container is heated in the heat-resistant container 3 in a vacuum state, so that oxidation does not occur.
そして、動作排気工程によって非凝縮性ガスが排出ざれ
た後、耐熱容器３から延出している延長ノズル２の部分
を、軸線方向と垂直な方向に挾圧して潰し、延長ノズル
２の部分で１１止する（第２図参照）。After the non-condensable gas is exhausted by the operational exhaust process, the part of the extension nozzle 2 extending from the heat-resistant container 3 is squeezed and crushed in a direction perpendicular to the axial direction, and the part of the extension nozzle 2 is (See Figure 2).
次に、耐熱容器３およびコンデナ−１を充分冷即し、配
管５のバルブ５ａを］１ロいて大気解放した後、底郡３
ａ近傍において耐熱容器３の円筒部を切断し、この耐熱
容器３の底部３ａの部分を切り離し、コンテナー１を耐
熱容器３内から取出す（第３図参照）。Next, the heat-resistant container 3 and the condenser 1 are sufficiently cooled, and the valve 5a of the pipe 5 is opened to the atmosphere.
The cylindrical portion of the heat-resistant container 3 is cut near a, the bottom portion 3a of the heat-resistant container 3 is separated, and the container 1 is taken out from inside the heat-resistant container 3 (see FIG. 3).
そして、耐熱容器３から取出したコンテナー１のノズル
部１ａの部分を、軸線方向と垂直な方向に挾圧して潰し
、ノズル部１ａの部分で封止するとともに、このノズル
部１ａの封止した位置の延長ノズル２側の部分を切断し
て、延長ノズル２および底部３ａの部分を切り離すとく
第４図参照）、純タングステン製のコンテナー１を用い
、作ｌ７ｌ流体として液体ナトリウムを封入した高温用
ヒートバイブが完成する（第５図参照）。Then, the nozzle part 1a of the container 1 taken out from the heat-resistant container 3 is squeezed and crushed in a direction perpendicular to the axial direction, and the nozzle part 1a is sealed, and the sealed position of the nozzle part 1a is Cut the extension nozzle 2 side part and separate the extension nozzle 2 and the bottom part 3a. The vibrator is completed (see Figure 5).
このように、コンテナー１内を真空にするとともに、こ
のコンテナー１を真空の嗣熱容器内に収容して加熱ベー
キング工程および動作排気工程を行なうようにしたので
、タングステンという非常に酸化し易い耐熱純金属製の
コンテナーを用いて、約１０００〜１ ３００℃の温度
範囲で作動する高温用ヒートパイプを製作することが可
能となった。In this way, the inside of the container 1 is evacuated, and the container 1 is housed in a vacuum heat container to perform the heating baking process and the operation exhaust process. It has become possible to manufacture high-temperature heat pipes that operate in the temperature range of about 1000 to 1300°C using metal containers.
また、以上のようにして製作された耐熱純金属である純
タングステン製のコンテナー１を用いた高温用ヒートパ
イブの外表面全体に、炭化けい素（Ｓｉ Ｃ》等のセラ
ミックを、プラズマ溶射等の手段で吹掛けてセラミック
層で覆えば、例えば１０００℃以上の高温の酸化雰囲気
中においても使用することができ、例えば、高温廃熱回
収装置や原子炉の冷が用熱交換器等に使用することがで
きる。Furthermore, a ceramic such as silicon carbide (SiC) is applied to the entire outer surface of the high-temperature heat pipe using the container 1 made of pure tungsten, which is a heat-resistant pure metal, manufactured as described above, by means such as plasma spraying. If it is sprayed with water and covered with a ceramic layer, it can be used even in oxidizing atmospheres at high temperatures of 1,000°C or higher, and can be used, for example, in high-temperature waste heat recovery equipment and cold heat exchangers for nuclear reactors. I can do it.
なお、本実施例においては、純タングステン製のコンテ
ナー１を用いた場合について説明したが、モリブデン等
の他の耐熱純金属や、ニオブー１％ジルコニウムあるい
はモリブデンーレニウム等の耐熱合金等を用いた場合や
、液体リチウム等の他の作動流体を用いた場合にも同様
に好適に実施することができる。In this example, the case was explained in which the container 1 made of pure tungsten was used, but other heat-resistant pure metals such as molybdenum, heat-resistant alloys such as 1% niobium zirconium or molybdenum-rhenium, etc. were used. It is also possible to suitably implement the method using other working fluids such as liquid lithium or the like.
発明の効果
以上説明したようにこの発明の方法は、酸化し易い耐熱
純金属あるいは合金等の耐熱金属で形成したコンテナー
内に液体金属等の沸点の高い作動流体を封入した高温用
ヒートパイプの製造方法において、前記コンテナーを、
一端が閉塞され他端に小径のノズル部が設けられた管状
に形成し、そのノズル部の先端に耐酸化性を備えた耐熱
金属製の延長ノズルを気密に接続するとともに、このコ
ンテナーを耐熱容器内に、前記延長ノズルの先端側を外
部へ気密に延出した状態で収容し、先ず前記耐熱容器内
およびコンテナー内を真空状態とし、次にこの耐熱容器
の外側から加熱して内部のコンテナーに対して真空ベー
キング工程を行なった後、前記延長ノズルよりコンテナ
ー内に作動流体を注入し、再び加熱して動作排気工程を
行なうようにしたので、コンテナーの内部および周囲を
真空状態にし、空気との接触を絶ってベーキング工程お
よび動作排気工程を行なうため、酸化し易い耐熱純金属
あるいは耐熱合金等の酎熱金ＦＡ製製のコンテナーを酸
化させることなく製造することができる。Effects of the Invention As explained above, the method of the present invention is capable of producing a high-temperature heat pipe in which a working fluid with a high boiling point, such as liquid metal, is sealed in a container made of heat-resistant pure metal or alloy, which is easily oxidized. In the method, the container comprises:
The container is formed into a tube shape with one end closed and a small diameter nozzle section provided at the other end, and an extension nozzle made of heat-resistant metal with oxidation resistance is airtightly connected to the tip of the nozzle section. The extended nozzle is housed in the container with the tip end thereof extending outward in an airtight manner, and the inside of the heat-resistant container and the container are first brought into a vacuum state, and then heated from the outside of the heat-resistant container to fill the inner container. After performing a vacuum baking process, the working fluid is injected into the container through the extension nozzle and heated again to perform the operational evacuation process. Since the baking process and the operation exhaust process are performed without contact, containers made of heat-resistant pure metal or heat-resistant alloy, etc., which are easily oxidized, can be manufactured without oxidation.
また、耐熱純金属あるいは耐熱合金製の前記コンテナー
内に作動流体を封入した後、このコンテナーの外周而全
体にセラ截ツク溶射膜を形成づれば、高温の酸化雰囲気
中での使用に耐え得る高温用ヒートパイプとすることが
できる。In addition, if the working fluid is sealed in the container made of heat-resistant pure metal or heat-resistant alloy, and a ceramic sprayed film is formed on the entire outer periphery of the container, it is possible to use a high-temperature device that can withstand use in a high-temperature oxidizing atmosphere. It can be a heat pipe.
ｇ１４１図ないし第５図はこの発明の方法の一実施例を
示し、第１図は耐熱容器に収容したコンテナーを示″！
ｊｌｌｉ面図、第２図ないし第５図は高温用ヒートパイ
プの各製造工程を示す説明図である。
１・・・コンテナー １ａ・・・ノズル部、 ２・・
・延長ノズル、 ３・・・耐熱容器、 ３ａ・・・底部
、 ３ｂ・・・挿通孔、 ３ｄ・・・抜気口、 ４・・
・益、 ５・・・配管、 ５ａ・・・バルブ。Figures 141 to 5 show an embodiment of the method of the present invention, and Figure 1 shows a container housed in a heat-resistant container.
The top view and FIGS. 2 to 5 are explanatory diagrams showing each manufacturing process of the high temperature heat pipe. 1... Container 1a... Nozzle part, 2...
- Extension nozzle, 3...Heat-resistant container, 3a...Bottom, 3b...Insertion hole, 3d...Air vent, 4...
・Income, 5...Piping, 5a...Valve.
Claims (2)
で形成したコンテナー内に液体金属等の沸点の高い作動
流体を封入した高温用ヒートパイプの製造方法において
、前記コンテナーを、一端が閉塞され他端に小径のノズ
ル部が設けられた管状に形成し、そのノズル部の先端に
耐酸化性を備えた耐熱金属製の延長ノズルを気密に接続
するとともに、このコンテナーを耐熱容器内に、前記延
長ノズルの先端側を外部へ気密に延出した状態で収容し
、先ず前記耐熱容器内およびコンテナー内を真空状態と
し、次にこの耐熱容器の外側から加熱して内部のコンテ
ナーに対して真空ベーキング工程を行なつた後、前記延
長ノズルよりコンテナー内に作動流体を注入し、再び加
熱して動作排気工程を行なうことを特徴とする酸化し易
い耐熱金属製のコンテナーを用いた高温用ヒートパイプ
の製造方法。(1) In a method for manufacturing a high-temperature heat pipe in which a working fluid with a high boiling point, such as liquid metal, is sealed in a container made of heat-resistant pure metal or alloy, which is easily oxidized, one end of the container is closed. The container is formed into a tubular shape with a small diameter nozzle at the other end, and an extension nozzle made of heat-resistant metal with oxidation resistance is airtightly connected to the tip of the nozzle. The extension nozzle is housed with its tip end extending outward in an airtight manner, and the inside of the heat-resistant container and the container are first brought into a vacuum state, and then the heat-resistant container is heated from the outside to perform vacuum baking on the inner container. After performing the process, the working fluid is injected into the container from the extension nozzle and heated again to perform the operational exhaust process. Production method.
に作動流体を封入した後、このコンテナーの外周面全体
にセラミック溶射膜を形成することを特徴とする請求項
１記載の酸化し易い耐熱金属製のコンテナーを用いた高
温用ヒートパイプの製造方法。(2) The container made of a heat-resistant metal that is easily oxidized according to claim 1, characterized in that after a working fluid is sealed in the container made of a heat-resistant pure metal or a heat-resistant alloy, a ceramic sprayed film is formed on the entire outer peripheral surface of the container. A method for manufacturing a high-temperature heat pipe using a container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18435389A JP2743012B2 (en) | 1989-07-17 | 1989-07-17 | Method of manufacturing heat pipe for high temperature using container made of heat-resistant metal which is easily oxidized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18435389A JP2743012B2 (en) | 1989-07-17 | 1989-07-17 | Method of manufacturing heat pipe for high temperature using container made of heat-resistant metal which is easily oxidized |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0350496A true JPH0350496A (en) | 1991-03-05 |
| JP2743012B2 JP2743012B2 (en) | 1998-04-22 |
Family
ID=16151769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18435389A Expired - Fee Related JP2743012B2 (en) | 1989-07-17 | 1989-07-17 | Method of manufacturing heat pipe for high temperature using container made of heat-resistant metal which is easily oxidized |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2743012B2 (en) |
-
1989
- 1989-07-17 JP JP18435389A patent/JP2743012B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2743012B2 (en) | 1998-04-22 |
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