JPH0328349Y2 - - Google Patents
Info
- Publication number
- JPH0328349Y2 JPH0328349Y2 JP1981180512U JP18051281U JPH0328349Y2 JP H0328349 Y2 JPH0328349 Y2 JP H0328349Y2 JP 1981180512 U JP1981180512 U JP 1981180512U JP 18051281 U JP18051281 U JP 18051281U JP H0328349 Y2 JPH0328349 Y2 JP H0328349Y2
- Authority
- JP
- Japan
- Prior art keywords
- thermocouple
- graphite
- graphite sleeve
- sleeve
- hole
- 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
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】
本考案は黒鉛を使用するガス炉の温度測定に当
り、温度検出端の位置を規制する熱電対の取付構
造に関するものである。[Detailed Description of the Invention] The present invention relates to a thermocouple mounting structure for regulating the position of a temperature detection end when measuring the temperature of a gas furnace using graphite.
ガス炉として原子燃料棒によりヘリウムガスを
加熱し、加熱したヘリウムガスにより発電した
り、製鉄を行つたりするものがある。原子燃料棒
はウランなどの原子核物質が使用され放射能によ
る危険があるため、原子燃料棒に替えてシースヒ
ータなどの発熱体が模擬装置として用いられてい
る。 Some gas furnaces heat helium gas using nuclear fuel rods, and use the heated helium gas to generate electricity or produce iron. Because nuclear fuel rods use nuclear materials such as uranium and are dangerous due to radioactivity, heating elements such as sheath heaters are used as simulators instead of nuclear fuel rods.
従来、ガス炉などに黒鉛を用いた炉の温度測定
に熱電対が組込まれていたが、その検出端が加熱
と共に膨張して位置が移動するため正確な温度測
定に支障を来していた。金属材料は350℃以上で
は使用に耐えにくく、特に、1000〜1300℃で、真
空、不活性ガス中ではその使用に耐える黒鉛が用
いられる。しかしながら、黒鉛はもろくて熱電対
の取付けがむずかしく、黒鉛に溝を核設してそこ
に熱電対を差し込むだけである。使用中において
は黒鉛と熱電対との熱膨張率が異なるため膨張し
て位置が移動し正確な温度測定に支障を来してい
た。 Conventionally, thermocouples have been incorporated to measure the temperature of graphite furnaces such as gas furnaces, but the detection end of the thermocouple expands and moves as it heats up, making accurate temperature measurement difficult. Metal materials cannot withstand use at temperatures above 350°C, and in particular, graphite is used, which can withstand use at temperatures of 1000 to 1300°C in vacuum or inert gas. However, graphite is brittle and it is difficult to attach the thermocouple to the graphite, so the only way to do this is to make a groove in the graphite and insert the thermocouple there. During use, graphite and thermocouples have different coefficients of thermal expansion, which causes them to expand and move, making accurate temperature measurement difficult.
本考案はこの欠点を除き検出端の位置を規制す
るようにしたものである。 The present invention eliminates this drawback and regulates the position of the detection end.
まず、ガス炉の全体の概要について説明する
と、第３図に示すように、ガス炉Ｇ内に複数個の
黒鉛スリーブ１を収容し、この黒鉛スリーブ１に
穿設した貫通孔１１に、黒鉛スリーブ２を外嵌め
したシースヒータなどの発熱体３をその外周に空
隙を介在させて挿入する。ヘリウムガスHeは矢
印Ａの方向に流通して加熱され、黒鉛スリーブ２
に熱電対４が埋設されて発熱体３の温度を測定す
る。 First, to explain the overall outline of the gas furnace, as shown in FIG. 3, a plurality of graphite sleeves 1 are housed in the gas furnace G, and the graphite sleeves A heat generating element 3 such as a sheath heater having a heat generating element 2 fitted thereon is inserted with a gap interposed around its outer periphery. Helium gas He flows in the direction of arrow A and is heated, and the graphite sleeve 2
A thermocouple 4 is embedded in the heating element 3 to measure the temperature of the heating element 3.
実施例について説明すると、ガス炉Ｇの黒鉛ブ
ロツク１の貫通孔１１に黒鉛スリーブ２を空隙を
存在させて挿入し、黒鉛スリーブ２の内部に発熱
体３を収容してある。第４図に示すように、この
ガス炉Ｇの黒鉛スリーブ２の外周面に長手方向に
溝を穿削し、その溝に熱電対４を挿入する。その
熱電対４の先端部に当る黒鉛スリーブ２の内方向
の穴を穿ち、その穴に金属製先端ボス５を挿入
し、両者を接触させその金属製先端ボス５と熱電
対４の先端部をレーザ溶接等により固着する。符
号６はレーザ溶接による固着箇所を示す。 To explain the embodiment, a graphite sleeve 2 is inserted into a through hole 11 of a graphite block 1 of a gas furnace G with a gap left therein, and a heating element 3 is housed inside the graphite sleeve 2. As shown in FIG. 4, a groove is cut in the longitudinal direction on the outer peripheral surface of the graphite sleeve 2 of this gas furnace G, and a thermocouple 4 is inserted into the groove. Drill an inward hole in the graphite sleeve 2 that corresponds to the tip of the thermocouple 4, insert the metal tip boss 5 into the hole, and bring them into contact to connect the metal tip boss 5 and the tip of the thermocouple 4. Fixed by laser welding, etc. Reference numeral 6 indicates a fixed location by laser welding.
このように熱電対先端部を固定することによ
り、加熱時においても熱電対が移動することなく
同じ位置において測温が可能となるものである。
従来黒鉛への熱電対の取付けはむずかしいもので
あつたが、本考案では単にレーザにより溶接する
だけでよく至極簡単にできる。さらに、熱電対は
黒鉛スリーブに埋設されているので、黒鉛ブロツ
クに挿入が容易である。 By fixing the tip of the thermocouple in this way, it is possible to measure the temperature at the same position without the thermocouple moving even during heating.
Conventionally, it was difficult to attach thermocouples to graphite, but with the present invention, it can be done extremely simply by simply welding with a laser. Furthermore, since the thermocouple is embedded in the graphite sleeve, it is easy to insert it into the graphite block.
また、上記実施例の他に熱電対検出端を固定す
る方法としては、
黒鉛スリーブ２の表面に熱電対４を挿入する
溝より浅くまたは広く穿削し、丸板・割りピン
などを嵌めこみ、そこを溶接し固定する。 In addition to the above embodiments, another method for fixing the thermocouple detection end is to drill the surface of the graphite sleeve 2 shallower or wider than the groove into which the thermocouple 4 is inserted, and insert a round plate, cotter pin, etc. Weld and secure it.
黒鉛スリーブ２の内方向に穴を穿ち、止メネ
ジを使用して板を取付けその板を溶接して固定
するなどの方法があるが、金属製先端ボスなど
の固定金具をなるべく小さくして熱流束の変化
をなくするようにしたものである。 There are methods such as drilling a hole inward of the graphite sleeve 2, attaching a plate using a set screw, and fixing the plate by welding. This is to eliminate the change in
第１図は本考案による検出端を装着したガス炉
の断面図である。第２図は本考案による検出端の
断面図である。第３図は全体の概要を示す縦断面
図である。第４図は黒鉛スリーブに熱電対を取付
ける状態を説明するための斜視図である。
１……黒鉛ブロツク、２……黒鉛スリーブ、３
……発熱体、４……熱電対、５……金属製先端ボ
ス、６……レーザ溶接による固着箇所、１１……
貫通孔。
FIG. 1 is a sectional view of a gas furnace equipped with a detection end according to the present invention. FIG. 2 is a sectional view of the detection end according to the present invention. FIG. 3 is a longitudinal cross-sectional view showing the overall outline. FIG. 4 is a perspective view for explaining how a thermocouple is attached to a graphite sleeve. 1...Graphite block, 2...Graphite sleeve, 3
... Heating element, 4 ... Thermocouple, 5 ... Metal tip boss, 6 ... Fixed location by laser welding, 11 ...
Through hole.
Claims (1)
ーブ２を外嵌めした発熱体３を前記黒鉛ブロツク
１に穿設した貫通孔１１に黒鉛スリーブ２の外周
に空隙を存在させて挿入させ、黒鉛スリーブ２の
外周面に熱電対を装着した熱電対の取付構造であ
つて、黒鉛スリーブ２の外周面に長手方向に溝を
穿設し、溝に熱電対４を挿入し、熱電対４の先端
部に当る黒鉛スリーブ２に内方向に穴を穿ち、前
記穴に金属製先端ボス５を挿入し、熱電対４と金
属製先端ボスとを当接させレーザ溶接により固着
してなる熱電対の取付構造。 A graphite block 1 is housed in a gas furnace, and a heating element 3 with a graphite sleeve 2 fitted thereon is inserted into a through hole 11 formed in the graphite block 1 with a gap existing around the outer periphery of the graphite sleeve 2. This is a thermocouple mounting structure in which a thermocouple is attached to the outer circumferential surface of a graphite sleeve 2, in which a groove is bored in the longitudinal direction on the outer circumferential surface of the graphite sleeve 2, a thermocouple 4 is inserted into the groove, and the tip of the thermocouple 4 is inserted into the groove. A thermocouple mounting structure in which a hole is drilled inward in the graphite sleeve 2 corresponding to the graphite sleeve 2, a metal tip boss 5 is inserted into the hole, the thermocouple 4 and the metal tip boss are brought into contact with each other, and fixed by laser welding. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18051281U JPS5884541U (en) | 1981-12-03 | 1981-12-03 | Structure that regulates the position of the temperature detection end of a gas furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18051281U JPS5884541U (en) | 1981-12-03 | 1981-12-03 | Structure that regulates the position of the temperature detection end of a gas furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5884541U JPS5884541U (en) | 1983-06-08 |
| JPH0328349Y2 true JPH0328349Y2 (en) | 1991-06-18 |
Family
ID=29977167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18051281U Granted JPS5884541U (en) | 1981-12-03 | 1981-12-03 | Structure that regulates the position of the temperature detection end of a gas furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5884541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008507684A (en) * | 2004-07-23 | 2008-03-13 | エボニック デグサ ゲーエムベーハー | Device for positioning and securing a wire in a tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5255457Y2 (en) * | 1973-10-26 | 1977-12-15 |
-
1981
- 1981-12-03 JP JP18051281U patent/JPS5884541U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008507684A (en) * | 2004-07-23 | 2008-03-13 | エボニック デグサ ゲーエムベーハー | Device for positioning and securing a wire in a tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5884541U (en) | 1983-06-08 |
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