JPH088429Y2 - Temperature distribution detection sensor - Google Patents
Temperature distribution detection sensorInfo
- Publication number
- JPH088429Y2 JPH088429Y2 JP1989062495U JP6249589U JPH088429Y2 JP H088429 Y2 JPH088429 Y2 JP H088429Y2 JP 1989062495 U JP1989062495 U JP 1989062495U JP 6249589 U JP6249589 U JP 6249589U JP H088429 Y2 JPH088429 Y2 JP H088429Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- sheath tube
- sensor
- thermocouple
- sheath
- 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
Links
- 238000009826 distribution Methods 0.000 title claims description 24
- 238000001514 detection method Methods 0.000 title claims description 15
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 125000006850 spacer group Chemical group 0.000 claims description 30
- 239000011810 insulating material Substances 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 238000009529 body temperature measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009545 invasion Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000005676 thermoelectric effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、物体内部、例えば工業炉炉壁内における特
定方向の温度分布を検知するための温度分布検知センサ
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a temperature distribution detection sensor for detecting a temperature distribution in a specific direction inside an object, for example, inside a furnace wall of an industrial furnace.
［従来の技術］ この種の従来の温度分布検知センサとしては、例え
ば、第５図に示すようなものがある（実公昭53−8370号
公報参照）。第５図に示すように、シース型熱電対Ａの
感温部A0の先端に、これと同一直線上に所要長さで熱電
対Ａと同一外径の金属線材Ｃを溶接等の手段により接合
する。このようにして長さの異なる金属線材Ｃを接合し
た熱電対Ａを必要数（ここでは４本）、別個に用意した
太径の保護管Ｂ内に線材Ｃを先にして挿入し、その各先
端を保護管Ｂの一端側に揃えることにより、各熱電対Ａ
の感温部A0の位置を異ならしめ、スエージングマシンそ
の他の減径機械にかけて保護管Ｂ外径を減径加工し次に
保護管Ｂの先端を閉鎖してセンサが形成される。[Prior Art] An example of a conventional temperature distribution detection sensor of this type is shown in FIG. 5 (see Japanese Utility Model Publication No. 53-8370). As shown in FIG. 5, at the tip of the temperature sensing part A 0 of the sheath type thermocouple A, a metal wire C having a required length on the same straight line as the thermocouple A and having the same outer diameter is welded by means such as welding. To join. In this way, the required number (four in this case) of thermocouples A to which the metal wires C having different lengths are joined are inserted into the separately prepared large-diameter protection tube B, and each of them is inserted. By aligning the tip with one end of the protective tube B, each thermocouple A
The temperature-sensing part A 0 is made different in position, the outer diameter of the protective tube B is reduced by a swaging machine or other diameter-reducing machine, and then the tip of the protective tube B is closed to form a sensor.
また、従来の他の温度分布検知センサとしては、実公
昭59−16816号公報に開示されたものもある。このセン
サでは、第６図に示すように、熱電効果をもつ一対の金
属線3a,3bを絶縁的に平行配列・挿通されたシース型熱
電対（またはシース型抵抗温度計）４が、複数本（ここ
では６本）外套シース管１内に絶縁材を介して収納され
ている。各熱電対４において、金属線3a,3bの先端はそ
のシース内で感温部２を構成している。そして、各熱電
対４の感温部２は、長さ方向において異なる位置を占め
るように配置される。また、感温部２の先端には、熱電
対４と全く同質の材料からなるシース型ダミー部材4aが
配設されており、これらの熱電対４とダミー部材4aとを
すべて絶縁的に外套シース管１内に収納することによっ
て温度分布検知センサが構成され、このようなセンサ
を、耐火物壁等内にその壁面とセンサ長さ方向とが垂直
となるように埋め込んで使用する。Another conventional temperature distribution detection sensor is disclosed in Japanese Utility Model Publication No. 59-16816. In this sensor, as shown in FIG. 6, a plurality of sheath-type thermocouples (or sheath-type resistance thermometers) 4 in which a pair of metal wires 3a and 3b having a thermoelectric effect are arranged and inserted in an insulating parallel manner are provided. (Six in this example) The outer sheath tube 1 is housed in the sheath tube 1 with an insulating material interposed therebetween. In each thermocouple 4, the tips of the metal wires 3a and 3b form the temperature sensing portion 2 in the sheath. The temperature sensing parts 2 of each thermocouple 4 are arranged so as to occupy different positions in the length direction. Further, a sheath type dummy member 4a made of the same material as the thermocouple 4 is disposed at the tip of the temperature sensing unit 2, and the thermocouple 4 and the dummy member 4a are all insulated in a sheath sheath. A temperature distribution detecting sensor is configured by housing in the pipe 1, and such a sensor is used by embedding it in a refractory wall or the like so that the wall surface thereof and the sensor length direction are perpendicular to each other.
［考案が解決しようとする課題］ しかしながら、上述のような従来の温度分布検知セン
サにおいて、第５図に示す前者のものでは、各熱電対Ａ
の先端に接合された金属線材Ｃが良熱伝導体として作用
し、最先端からの入熱が金属線材Ｃを伝わって高感度で
各感温部Ｃへ伝達されることになるので、耐火物厚さ方
向の温度分布を正確に測定できない。[Problems to be Solved by the Invention] However, in the conventional temperature distribution detection sensor as described above, in the former one shown in FIG. 5, each thermocouple A
The metal wire C bonded to the tip of the wire acts as a good heat conductor, and the heat input from the leading edge is transmitted through the metal wire C to the temperature sensitive parts C with high sensitivity. The temperature distribution in the thickness direction cannot be measured accurately.
また、第６図に示す後者の温度分布検知センサでは、
測温精度，最先端からの入熱による熱擾乱は、熱電対４
と同一材質のダミー部材4aの配置および絶縁材の充填に
より完全に解消されるが、このようなセンサを高炉炉壁
に使用した場合、第７図に示すように、耐火物（レン
ガ）７の損傷に伴ってセンサ先端が溶損開放されると、
絶縁耐火物（例えばMgO）面が炉内に露出することにな
る。このような状況になると、炉内の悪環境雰囲気ガス
（例えばCO,Zn,K,H2Ｏ等）が炉内の高圧（２〜3kg/c
m2）のためにセンサ内に侵入していくことになる。この
ような状況が長期間継続すると、後方部の熱電対４およ
びその金属線3a,3bを腐食させることになる。この腐食
は、COガス侵入による絶縁材MgO中不純物との反応によ
りＣ沈積、あるいは、H2Ｏ侵入によるMgOとの反応でMg
（OH）2生成による体積膨張という状況を生じ、センサ
内部に決定的なダメージを与えることになり、センサの
耐久性が損なわれるという課題がある。なお、第７図で
は、ダミー部材4aの図示は省略している。Further, in the latter temperature distribution detection sensor shown in FIG.
Temperature measurement accuracy, heat disturbance due to heat input from the leading edge, thermocouple 4
It is completely eliminated by arranging the dummy member 4a of the same material as and the filling of the insulating material. However, when such a sensor is used for the blast furnace wall, as shown in FIG. When the sensor tip is melted and released due to damage,
The insulating refractory (eg MgO) surface will be exposed in the furnace. In such a situation, the adverse environmental atmosphere gas (for example, CO, Zn, K, H 2 O, etc.) in the furnace is at a high pressure (2-3 kg / c) in the furnace.
m 2 ) will penetrate into the sensor. If such a situation continues for a long time, the thermocouple 4 and the metal wires 3a and 3b in the rear part will be corroded. This corrosion is caused by the deposition of C due to the reaction with impurities in the insulating material MgO due to the entry of CO gas, or the reaction with MgO due to the entry of H 2 O to Mg.
There is a problem that the situation of volume expansion due to (OH) 2 generation causes definite damage inside the sensor, and the durability of the sensor is impaired. Note that the dummy member 4a is not shown in FIG.
このような腐食による具体的な悪影響は、例えば第８
図（ａ），（ｂ）に示すように表れる。センサを適用し
た高炉に火入してから20日経過後のセンサ先端側から５
つの熱電対の温度T1〜T5は、第８図（ａ）に示すよう
に、順に温度勾配が認められるが、火入から３カ月経過
後の測温データでは、第８図（ｂ）に示すように、先端
側の３つの熱電対による測定温度T1〜T3がほぼ同一にな
っており、解析からは温度T3を測定する熱電対まで耐火
物が侵食されたことを示している。しかし、実際には、
耐火物はほぼ健全であり、センサのみが前述の悪環境雰
囲気ガスの侵入により選択的に腐食されたことが原因で
ある。A specific adverse effect due to such corrosion is, for example,
It appears as shown in FIGS. 5 days from the sensor tip side after 20 days have passed since the sensor was applied to the blast furnace
The temperature T 1 to T 5 of the two thermocouples has a temperature gradient in sequence as shown in Fig. 8 (a), but the temperature measurement data after 3 months from the ignition shows that in Fig. 8 (b). As shown in, the temperatures T 1 to T 3 measured by the three thermocouples on the tip side are almost the same, and the analysis shows that the refractory eroded up to the thermocouple measuring the temperature T 3. There is. But actually,
The refractory is almost healthy, and this is because only the sensor is selectively corroded by the invasion of the above-mentioned atmosphere gas.
本考案は、上述した課題を解消しようとするもので、
高炉炉壁部等の耐火物厚さ方向の温度分布を測定する際
に、侵食に伴うセンサ内への炉内ガス侵入を抑制し、耐
火物の侵食が進んでも残存感温部によって長期安定的に
測温を行なえるようにして、耐久性および信頼性の向上
をはかった温度分布検知センサを提供することを目的と
する。The present invention is intended to solve the above-mentioned problems,
When measuring the temperature distribution in the thickness direction of the refractory such as the wall of the blast furnace, suppress the intrusion of the gas in the furnace into the sensor due to erosion, and even if the erosion of the refractory progresses, the residual temperature-sensitive part provides long-term stability. It is an object of the present invention to provide a temperature distribution detection sensor which is capable of performing temperature measurement at any temperature and has improved durability and reliability.
［課題を解決するための手段］ 上記目的を達成するため、本考案の温度分布検知セン
サは、熱電対または抵抗温度計とダミー部材との通過
を許容しながら外套シース管の内部を前方側と後方側と
に仕切る金属製スペーサを、前記の熱電対または抵抗温
度計の各感温部よりも前方側位置に配設し、前記外套
シース管内における絶縁材の充填密度を70％以上にする
とともに、前記外套シース管にセラミック材の溶射を
施したことを特徴としている。[Means for Solving the Problems] In order to achieve the above object, the temperature distribution detection sensor of the present invention is configured such that the inside of the outer sheath tube is set to the front side while allowing passage of the thermocouple or the resistance thermometer and the dummy member. A metal spacer for partitioning the rear side is arranged at a position on the front side of each of the temperature-sensing parts of the thermocouple or the resistance thermometer, and the packing density of the insulating material in the outer sheath tube is 70% or more. The outer sheath tube is sprayed with a ceramic material.
［作用］ 上述した本考案の温度分布検知センサでは、センサの
先端側が溶損した場合、金属製スペーサおよび充填密度
の高い絶縁材により、溶損部からセンサ内への炉内ガス
の侵入が遮蔽・抑制され、感温部の腐食が防止される。
また、外套シース管に溶射されたセラミック材により、
アルカリ性蒸気やCOガスの存在する悪環境下での耐久性
が高められる。[Operation] In the temperature distribution detection sensor of the present invention described above, when the tip side of the sensor is melted, the metal spacer and the insulating material having a high packing density prevent the intrusion of the gas in the furnace from the melted portion into the sensor. -It is suppressed and corrosion of the temperature sensitive part is prevented.
Also, due to the ceramic material sprayed on the mantle sheath tube,
Improves durability in adverse environments where alkaline vapor and CO gas are present.
［考案の実施例］ 以下、図面により本考案の一実施例としての温度分布
検知センサについて説明すると、第１図はその縦展開断
面図、第２図（ａ）〜（ｅ）はその製造手順を説明する
ためのもので、第２図（ａ）〜（ｃ）は各構成要素を示
す斜視図、第２図（ｄ），（ｅ）は減径加工を説明する
ための横断面図である。なお、本実施例では、測温点が
４点のものについて説明するが、通常は２〜８点の中か
ら選択されるが、高炉炉壁に適用する場合には、６点が
標準的である。[Embodiment of the Invention] A temperature distribution detecting sensor as one embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal development sectional view thereof, and FIGS. 2 (a) to 2 (e) are manufacturing procedures thereof. 2 (a) to (c) are perspective views showing respective constituent elements, and FIGS. 2 (d) and 2 (e) are transverse cross-sectional views for explaining the diameter reduction processing. is there. In the present embodiment, the case where the temperature measurement points are 4 will be described, but it is usually selected from 2 to 8 points, but when applied to the blast furnace wall, 6 points are standard. is there.
第１図に示すように、第６図に示した従来のものと同
様に、本実施例でも、熱電効果をもつ一対の金属線3a,3
bを絶縁的にシース内において平行配列・挿通され構成
されたシース型熱電対４が、複数本（ここでは４本）、
外套シース管１内に多孔絶縁耐火物（絶縁材；例えばMg
O,A12O3等）５で相互に絶縁・隔離されて収納されてい
る。各熱電対４において、金属線3a,3bの先端は、その
シース内で感温部２を構成している。そして、各熱電対
４の感温部２は、長さ方向において異なる位置を占める
ように配置されるとともに、感温部２の先端には、熱電
対４と全く同質の材料からなるシース型ダミー部材（同
一の熱伝導性を確保するための感温部をもたないシース
型熱電対）4aが配設されており、これらの熱電対４とダ
ミー部材4aとがすべて絶縁的に外套シース管１内に収納
されている。As shown in FIG. 1, similarly to the conventional one shown in FIG. 6, also in this embodiment, a pair of metal wires 3a, 3 having a thermoelectric effect is formed.
A plurality of (four in this case) sheath type thermocouples 4 configured by insulatingly arranging and inserting b in the sheath in parallel.
Porous insulating refractory (insulating material; eg Mg
O, A1 2 O 3 etc.) 5 are insulated and isolated from each other. In each thermocouple 4, the tips of the metal wires 3a and 3b form the temperature sensing section 2 inside the sheath. The temperature sensing parts 2 of each thermocouple 4 are arranged so as to occupy different positions in the length direction, and the sheath type dummy made of the same material as the thermocouple 4 is formed at the tip of the temperature sensing part 2. A member (sheath type thermocouple having no temperature sensing portion for ensuring the same thermal conductivity) 4a is provided, and these thermocouple 4 and dummy member 4a are all insulated and are sheath sheath tubes. It is stored in 1.
ここで、外套シース管１としては、通常、耐熱性，耐
久性を考慮してSUS310S,インコネル等が利用され、さら
に本実施例では外套シース管１には、セラミック（例え
ばZrO2，A12O3等）の溶射が施されている。また、多孔
絶縁耐火物（絶縁材）５としては、できるだけ不純物の
少ないものを用い、万一炉内ガスが侵入した場合に炉内
ガスとの反応進行を抑制するように構成する。Here, as the outer sheath tube 1, SUS310S, Inconel or the like is usually used in consideration of heat resistance and durability, and in the present embodiment, the outer sheath tube 1 is made of ceramic (eg, ZrO 2 , A1 2 O). 3 ) is sprayed. Further, as the porous insulating refractory material (insulating material), one having as few impurities as possible is used, and is configured to suppress the reaction progress with the in-furnace gas, should the in-furnace gas enter.
そして、本実施例では、各熱電対４やダミー部材4aの
通過を許容しながら外套シース管１の内部を前方側と後
方側とに仕切る金属製スペーサ６が、熱電対４の各感温
部２よりも前方側位置（熱電対４とダミー部材4aとの接
続部4Aよりも２〜3mm前方側）に配設されており、金属
製スペーサ６の外周面と外套シース管１の内周面との
間、および、金属製スペーサ６の内面と熱電対4,ダミー
部材4aの外周面との間は、後述する減径加工により密着
嵌合されている。ここで、金属製スペーサ６としては、
外套シース管１と同一材質のSUS310S,インコネル等によ
りなる厚さ２〜3mm程度のものが用いられる。なお、ス
ペーサ６は外套シース管１と異なる材質のもので構成し
ても構わない。In the present embodiment, the metal spacers 6 partitioning the inside of the outer sheath tube 1 into the front side and the rear side while allowing passage of the thermocouples 4 and the dummy members 4a are the temperature-sensing parts of the thermocouples 4. It is arranged at a position on the front side of 2 (2 to 3 mm in front of the connecting portion 4A between the thermocouple 4 and the dummy member 4a), and the outer peripheral surface of the metal spacer 6 and the inner peripheral surface of the outer sheath tube 1. And the inner surface of the metal spacer 6 and the outer surface of the thermocouple 4 and the dummy member 4a are closely fitted by a diameter reduction process described later. Here, as the metal spacer 6,
The outer sheath tube 1 is made of the same material as SUS310S, Inconel or the like and has a thickness of about 2 to 3 mm. The spacer 6 may be made of a material different from that of the outer sheath tube 1.
さらに、外套シース管１内における多孔絶縁耐火物
（絶縁材）の充填密度は、後述する減径加工により70％
以上にまで高められているほか、センサ基部側における
外套シース管１の開口端は、炉内ガスの流入防止の安全
側を考慮してエポキシ樹脂等（図示せず）により完全封
止する。Further, the packing density of the porous insulating refractory (insulating material) in the outer sheath tube 1 is 70% by the diameter reduction processing described later.
In addition to the above, the open end of the outer sheath tube 1 on the sensor base side is completely sealed with epoxy resin or the like (not shown) in consideration of the safe side of preventing inflow of gas in the furnace.
次に、上述のごとく構成される温度分布検知センサの
製造手順を第２図（ａ）〜（ｅ）により説明する。Next, a manufacturing procedure of the temperature distribution detection sensor configured as described above will be described with reference to FIGS.
まず、第２図（ａ）に示すように、４本の熱電対４
を、それぞれの感温部２が長さ方向の異なる位置になる
ように、シース型ダミー部材4aを感温部２の先端側に接
続して最先端を揃える。そして、第２図（ｂ）に示すよ
うな多孔絶縁耐火物５と厚さ２〜3mm程度の金属製スペ
ーサ６とを準備し、耐火物５およびスペーサ６に形成さ
れた穴に、第２図（ａ）に示した熱電対４およびダミー
部材4aを挿通させる。このとき、金属製スペーサ６を、
各感温部２よりも前方側２〜3mmの位置になるように配
置する。また、耐火物５およびスペーサ６の内周面と、
熱電対４およびダミー部材4aの外周面との間には、第２
図（ｄ）に示すように、適当な空隙部８が設けられてい
る。First, as shown in FIG. 2 (a), four thermocouples 4
The sheath type dummy member 4a is connected to the distal end side of the temperature sensitive portion 2 so that the respective temperature sensitive portions 2 are located at different positions in the lengthwise direction and the leading ends are aligned. Then, a porous insulating refractory 5 as shown in FIG. 2 (b) and a metal spacer 6 having a thickness of about 2 to 3 mm are prepared, and the holes formed in the refractory 5 and the spacer 6 are provided in FIG. The thermocouple 4 and the dummy member 4a shown in (a) are inserted. At this time, the metal spacer 6
It is arranged so that it is located 2 to 3 mm in front of each temperature sensing part 2. In addition, the inner peripheral surfaces of the refractory 5 and the spacer 6,
Between the thermocouple 4 and the outer peripheral surface of the dummy member 4a, a second
As shown in FIG. 3D, an appropriate void portion 8 is provided.
ここで、金属製スペーサ６の厚さは、薄すぎると外套
シース管１との密着製が不十分になる一方、厚すぎると
伸線加工時に不均一伸びの原因となることから、２〜3m
m程度とされる。また、金属製スペーサ６の配置位置に
ついては、このスペーサ６が後述のごとく後方の感温部
２へのガス侵入を防止しうる遮蔽板としての機能を果た
すものであるから、後方の感温部２の直前にあることが
望ましいが、感温部２に最も直近の接続部4Aは強度的に
弱いため、この接続部4Aよりも２〜3mm程度前方に配置
することが最も効果的である。Here, if the thickness of the metal spacer 6 is too thin, the adhesion with the outer sheath tube 1 will be insufficient, while if it is too thick, it will cause uneven elongation during wire drawing.
It is about m. Regarding the position of the metal spacer 6, the spacer 6 functions as a shielding plate that can prevent gas from entering the temperature sensing unit 2 at the rear, as will be described later. It is desirable to be immediately before 2, but since the connecting portion 4A closest to the temperature sensing portion 2 is weak in strength, it is most effective to dispose it about 2 to 3 mm in front of this connecting portion 4A.
さて、熱電対4,ダミー部材4a,耐火物５およびスペー
サ６の位置決め・配置を終えると、その全体の位置関係
を固定したまま、第２図（ｃ）に示すような外套シース
管１内へ挿入する。このとき、外套シース管１の内周面
と耐火物５およびスペーサ６の外周面との間にも、第２
図（ｄ）に示すように、適当な空隙部８が設けられてい
る。Now, after positioning and arranging the thermocouple 4, the dummy member 4a, the refractory material 5 and the spacer 6, the total positional relationship is fixed and the inside of the sheath sheath tube 1 as shown in FIG. insert. At this time, the second sheath is also provided between the inner peripheral surface of the outer sheath tube 1 and the outer peripheral surfaces of the refractory 5 and the spacer 6.
As shown in FIG. 3D, an appropriate void portion 8 is provided.
この後、第２図（ｄ）に示すような配置となったアセ
ンブル全体を、減径加工（スエージング等）によりセン
サ全体を一体化し、第２図（ｅ）に示すように、金属製
スペーサ６の外周面と外套シース管１の内周面との間、
および、金属製スペーサ６の内面と熱電対4,ダミー部材
4aの外周面との間を密着嵌合させるとともに、多孔絶縁
耐火物５の充填密度を70％以上に高める。After that, the entire assembly having the arrangement shown in FIG. 2 (d) is integrated with the entire sensor by reducing the diameter (swaging, etc.), and as shown in FIG. 2 (e), a metal spacer is formed. Between the outer peripheral surface of 6 and the inner peripheral surface of the outer sheath tube 1,
Also, the inner surface of the metal spacer 6, the thermocouple 4, and the dummy member
The outer peripheral surface of 4a is closely fitted and the packing density of the porous insulating refractory 5 is increased to 70% or more.
この減径加工によってセンサを一体化する時には、以
下の注意が必要である。金属製スペーサ６と外套シー
ス管1,熱電対4,ダミー部材4aとの密着性を高めるため
に、多孔絶縁耐火物５と金属製スペーサ６との形状は同
一にしておく。第２図（ａ）〜（ｃ）に示す各構成要
素のアセンブル完了後、第１回減径加工スケジュール
は、空隙部８を残さないダイスケジュールが必要であ
る。空隙部の残るダイスケジュール、または金属製スペ
ーサ６が多孔絶縁耐火物５よりも小さい場合には、第１
回減径加工時、多孔絶縁耐火物５がクラッシュして、金
属製スペーサ６と外套シース管１との間、および、金属
製スペーサ６と熱電対4,ダミー部材4aとの間に侵入し、
以降の減径加工でも密着させることができず、最終的に
センサ長さ方向のガス侵入のためのパスを残すことにな
り、目的とする長期信頼製が確保できない場合が生じる
ので、上記，についてはセンサ製造時、特に注意が
必要である。The following precautions must be taken when integrating the sensors by this diameter reduction processing. In order to improve the adhesion between the metal spacer 6 and the outer sheath tube 1, the thermocouple 4, and the dummy member 4a, the porous insulating refractory 5 and the metal spacer 6 have the same shape. After the assembling of the respective constituent elements shown in FIGS. 2 (a) to (c) is completed, the first diameter-reducing processing schedule requires a die schedule which does not leave the void portion 8. If the die schedule having the voids or the metal spacer 6 is smaller than the porous insulating refractory 5, the first
At the time of diameter reduction processing, the porous insulating refractory 5 crashes and enters between the metal spacer 6 and the outer sheath tube 1, and between the metal spacer 6 and the thermocouple 4 and the dummy member 4a.
Even in the subsequent diameter reduction processing, it is not possible to make a close contact, and a path for gas intrusion in the sensor length direction is ultimately left, and there may be cases where the desired long-term reliability cannot be secured. Requires special attention when manufacturing the sensor.
上述のごとく構成された本実施例の温度分布検知セン
サを高炉炉壁に使用した場合、第３図に示すように、耐
火物（レンガ）７の損傷に伴ってセンサ先端が溶損開放
されると、絶縁材（例えばMgO）面が炉内に露出するこ
とになる。このような状況になると、炉内の悪環境雰囲
気ガス（例えばCO,Zn,K,H2Ｏ等）が炉内の高圧（２〜3k
g/cm2）のためにセンサ内に侵入していくことになる。When the temperature distribution detecting sensor of the present embodiment configured as described above is used for the furnace wall of the blast furnace, as shown in FIG. 3, the tip of the sensor is melted and released as the refractory (bricks) 7 is damaged. Then, the insulating material (eg MgO) surface is exposed in the furnace. In such a situation, the adverse environmental atmosphere gas (for example, CO, Zn, K, H 2 O, etc.) in the furnace is at a high pressure (2-3k) in the furnace.
g / cm 2 ) will penetrate into the sensor.
しかし、本実施例のセンサでは、第３図に示すように
センサの先端側が溶損した場合、金属製スペーサ６およ
び充填密度の高い絶縁耐火物５により、溶損部からセン
サ内への炉内ガスの侵入が積極的に遮蔽・抑制され、そ
の侵入速度が極めて遅くなり、感温部の腐食が防止され
る。従って、高炉炉壁部等の耐火物厚さ方向の温度分布
を測定する際に、耐火物の侵食が進んでも残存する感温
部２によって長期安定的に測温が行なえ、センサの耐久
性および信頼性が飛躍的に向上するのである。However, in the sensor of this embodiment, when the tip side of the sensor is melted as shown in FIG. 3, the metal spacer 6 and the insulating refractory 5 having a high packing density cause the inside of the furnace from the melted portion to the sensor. Invasion of gas is positively shielded / suppressed, the invasion speed is extremely slowed, and corrosion of the temperature sensing part is prevented. Therefore, when measuring the temperature distribution in the thickness direction of the refractory such as the wall of the blast furnace, temperature can be stably measured for a long time by the temperature sensing unit 2 that remains even if the refractory erosion progresses, and the durability of the sensor and Reliability is dramatically improved.
なお、第３図では、ダミー部材4aの図示は省略すると
ともに、熱電対４が３本の場合を示している。In addition, in FIG. 3, the illustration of the dummy member 4a is omitted, and the case where the number of the thermocouples 4 is 3 is shown.
上述のような効果を具体的に第４図（ａ），（ｂ）に
示し、ここでは、従来についての第８図（ａ），（ｂ）
と比較できるように、５つの感温部をもつセンサの温度
勾配を示す。センサを適用した高炉に火入してから20日
経過後のセンサ先端側から５つの熱電対の温度T1〜T
5は、第４図（ａ）に示すように、順に正常な温度勾配
になっているが、火入から８カ月経過後の測温データで
は、従来、第８図（ｂ）に示すように生じていたセンサ
の選択的な溶損は認められず、温度T1〜T5まで順に極め
て正常な温度勾配が得られている。The above effects are specifically shown in FIGS. 4 (a) and 4 (b), and here, FIGS. 8 (a) and 8 (b) for the conventional case are shown.
The temperature gradient of a sensor with five temperature sensitive parts is shown for comparison with. Temperatures of five thermocouples T 1 to T from the tip of the sensor 20 days after the sensor was applied to the blast furnace
No. 5 has a normal temperature gradient in sequence as shown in FIG. 4 (a), but the temperature measurement data 8 months after the ignition has hitherto been as shown in FIG. 8 (b). No selective erosion of the generated sensor was observed, and extremely normal temperature gradients were obtained in order from temperature T 1 to T 5 .
また、本実施例の温度センサでは、外套シース管１に
セラミック材を溶射することにより、アルカリ性蒸気
（Ca,Pb、Zn,C1,F等）やCOガスの存在する悪環境下でも
耐久性を大幅に高めることができる。Further, in the temperature sensor of the present embodiment, by spraying the ceramic material onto the sheath sheath tube 1, durability is ensured even in a bad environment where alkaline vapor (Ca, Pb, Zn, C1, F, etc.) and CO gas exist. Can be greatly increased.
なお、上記実施例では、シース型熱電対を用いた場合
について説明したが、これに代えてシース型抵抗温度計
を用いてもよく、上記実施例と同様の作用効果が得られ
る。また、上記実施例では、熱電対４を４本としたが、
本発明のセンサはこれに限定されるものではない。In addition, in the said Example, although the case where a sheath type thermocouple was used was demonstrated, you may use a sheath type resistance thermometer instead of this and the same effect as the said Example is acquired. Further, in the above embodiment, the number of thermocouples 4 is four, but
The sensor of the present invention is not limited to this.
さらに、上記実施例では、絶縁材として多孔絶縁耐火
物５を用いた場合について説明したが、粉末絶縁耐火物
を用いてもよい。ただし、この場合には、第２図（ａ）
〜（ｄ）にて示したアセンブルの階段で、金属製スペー
サ６と外套シース管１との空隙部８、および金属製スペ
ーサ６と熱電対4,ダミー部材4aとの空隙部８は極力小さ
くなるように配慮する。Furthermore, in the above-mentioned embodiment, the case where the porous insulating refractory 5 is used as the insulating material has been described, but a powder insulating refractory may be used. However, in this case, FIG. 2 (a)
In the assembling steps shown in (d) to (d), the space 8 between the metal spacer 6 and the outer sheath tube 1 and the space 8 between the metal spacer 6, the thermocouple 4, and the dummy member 4a are as small as possible. To consider.
［考案の効果］ 以上詳述したように、本考案の温度分布検知センサに
よれば、各感温部よりも前方側位置に、熱電対または抵
抗温度計とダミー部材との通過を許容しながら外套シー
ス管の内部を前方側と後方側とに仕切る金属製スペーサ
を配設し、外套シース管内における絶縁材の充填密度を
70％以上に高めるとともに、外套シース管にセラミック
材の溶射を施す構成としたので、金属製スペーサおよび
充填密度の高い絶縁材により溶損部からセンサ内への炉
内ガスの侵入が積極的に遮蔽・抑制されるほか、セラミ
ック材によりアルカリ性蒸気やCOガスの存在する悪環境
下での耐久性が高められる。従って、高炉炉壁部等の耐
火物厚さ方向の温度分布を測定する際に、耐火物の侵食
が進んでも残存感温部によって長期安定的に測温が行な
え、耐久性および信頼性の飛躍的な向上を実現できる効
果がある。[Effects of the Invention] As described in detail above, according to the temperature distribution detection sensor of the present invention, the thermocouple or the resistance thermometer and the dummy member are allowed to pass through at a position in front of each temperature sensing unit. A metal spacer that partitions the inside of the mantle sheath tube into the front side and the rear side is provided to improve the packing density of the insulating material in the mantle sheath tube.
In addition to increasing the ratio to 70% or more, the sheath sheath tube is sprayed with a ceramic material, so that the metal spacer and the insulating material with a high packing density positively prevent the gas in the furnace from invading the melted portion into the sensor. In addition to being shielded and suppressed, the ceramic material enhances durability in adverse environments where alkaline vapor and CO gas are present. Therefore, when measuring the temperature distribution in the thickness direction of the refractory such as the wall of the blast furnace, even if erosion of the refractory progresses, the residual temperature-sensitive part enables stable temperature measurement for a long period of time, making a leap in durability and reliability. There is an effect that it is possible to achieve the desired improvement.
第１図は本考案の一実施例としての温度分布検知センサ
を示す縦展開断面図、第２図（ａ）〜（ｅ）はその製造
手順を説明するためのもので、第２図（ａ）〜（ｃ）は
各構成要素を示す斜視図、第２図（ｄ），（ｅ）は減径
加工を説明するための横断面図、第３図はその作用を説
明するための縦断面図、第４図（ａ），（ｂ）はその効
果を説明するためのグラフであり、第５図は従来の温度
分布検知センサを示す縦断面図、第６〜８図は従来の他
の温度分布検知センサを示すもので、第６図はその一部
を破断して示す斜視図、第７図はその溶損状況を示す縦
断面図、第８図（ａ），（ｂ）はその課題を説明するた
めのグラフである。 図において、１……外套シース管、２……感温部、3a,3
b……金属線、４……シース型熱電対、4a……シース型
ダミー部材、4A……接続部、５……多孔絶縁耐火物（絶
縁材）、６……金属製スペーサ、７……耐火物（レン
ガ）。FIG. 1 is a longitudinal development sectional view showing a temperature distribution detecting sensor as an embodiment of the present invention, and FIGS. 2 (a) to 2 (e) are for explaining a manufacturing procedure thereof. )-(C) are perspective views showing each component, FIGS. 2 (d) and 2 (e) are cross-sectional views for explaining the diameter reduction processing, and FIG. 3 is a vertical cross-sectional view for explaining the action thereof. FIGS. 4 (a) and 4 (b) are graphs for explaining the effect, FIG. 5 is a longitudinal sectional view showing a conventional temperature distribution detection sensor, and FIGS. FIG. 6 shows a temperature distribution detection sensor. FIG. 6 is a partially cutaway perspective view, FIG. 7 is a vertical cross-sectional view showing the melting damage state, and FIGS. 8 (a) and 8 (b) show the same. It is a graph for explaining a subject. In the figure, 1 ... Mantle sheath tube, 2 ... Temperature sensing part, 3a, 3
b …… Metal wire, 4 …… Sheath type thermocouple, 4a …… Sheath type dummy member, 4A …… Connection part, 5 …… Perforated insulating refractory (insulating material), 6 …… Metal spacer, 7 …… Refractory (brick).
フロントページの続き (72)考案者 新井 明男 兵庫県神戸市須磨区中島町２丁目２―５ (56)参考文献 特開 昭57−84324（ＪＰ，Ａ) 特開 昭61−8635（ＪＰ，Ａ) 実開 昭60−162896（ＪＰ，Ｕ) 実開 昭63−75826（ＪＰ，Ｕ) 実公 昭59−16816（ＪＰ，Ｙ２)Front Page Continuation (72) Inventor Akio Arai 2-5-5, Nakajima-cho, Suma-ku, Kobe City, Hyogo Prefecture (56) Reference JP-A-57-84324 (JP, A) JP-A-61-8635 (JP, A) ) Actual opening 60-162896 (JP, U) Actual opening 63-75826 (JP, U) Actual opening 59-16816 (JP, Y2)
Claims (1)
またはシース型抵抗温度計の複数本を、それぞれの前記
感温部が長さ方向の異なる部位に配置されるように平行
配列するとともに、前記の熱電対または抵抗温度計と実
質的に同一の熱伝導性を有するシース型ダミー部材を前
記の各感温部の先端に接続してこれらの最先端を揃え、
これら熱電対または抵抗温度計を絶縁材で相互に非接触
に保ちつつ１つの外套シース管内に収納してなる温度分
布検知センサにおいて、前記の熱電対または抵抗温度計
とダミー部材との通過を許容しながら前記外套シース管
の内部を前方側と後方側とに仕切る金属製スペーサが、
前記の各感温部よりも前方側位置に配設され、前記外套
シース管内における前記絶縁材の充填密度を70％以上に
するとともに、前記外套シース管にセラミック材の溶射
が施されていることを特徴とする温度分布検知センサ。1. A plurality of sheath-type thermocouples or sheath-type resistance thermometers having a temperature-sensing portion on the front end side thereof are arranged in parallel so that each of the temperature-sensing portions is disposed at a different portion in the length direction. In addition, a sheath type dummy member having substantially the same thermal conductivity as the thermocouple or the resistance thermometer is connected to the tip of each of the temperature sensing parts to align the leading edges thereof,
In a temperature distribution detection sensor in which these thermocouples or resistance thermometers are housed in one outer sheath tube while keeping them in contact with each other with an insulating material, allow passage of the thermocouples or resistance thermometers and the dummy member. While the metal spacer that divides the inside of the mantle sheath tube into the front side and the rear side,
The outer sheath sheath tube is disposed at a position on the front side of each of the temperature-sensing parts, the packing density of the insulating material in the outer sheath tube is 70% or more, and the outer sheath tube is sprayed with a ceramic material. A temperature distribution detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989062495U JPH088429Y2 (en) | 1989-05-31 | 1989-05-31 | Temperature distribution detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989062495U JPH088429Y2 (en) | 1989-05-31 | 1989-05-31 | Temperature distribution detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH034237U JPH034237U (en) | 1991-01-17 |
| JPH088429Y2 true JPH088429Y2 (en) | 1996-03-06 |
Family
ID=31591697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989062495U Expired - Fee Related JPH088429Y2 (en) | 1989-05-31 | 1989-05-31 | Temperature distribution detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH088429Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002107233A (en) * | 2000-09-27 | 2002-04-10 | Toshiba Corp | Thermocouple device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4567131B2 (en) * | 1999-12-27 | 2010-10-20 | 川惣電機工業株式会社 | Continuous temperature measuring device |
| JP2002022548A (en) * | 2000-07-07 | 2002-01-23 | Kawaso Electric Industrial Co Ltd | Probe for continuous temperature measurement |
| JP2007266439A (en) * | 2006-03-29 | 2007-10-11 | Matsushita Electric Ind Co Ltd | Substrate processing apparatus and substrate processing method |
| JP5045454B2 (en) * | 2008-01-22 | 2012-10-10 | 山里産業株式会社 | Thermocouple mounting structure to tube wall and thermocouple mounting method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5784324A (en) * | 1980-11-14 | 1982-05-26 | Sukegawa Denki Kogyo Kk | Manufacture of temperature measuring body with multiple measuring points |
| JPS607309Y2 (en) * | 1982-07-22 | 1985-03-11 | 昌明 岡部 | Cardboard box with partitions |
| JPS60162896U (en) * | 1984-04-05 | 1985-10-29 | 株式会社 日向製錬所 | Furnace atmosphere temperature distribution measuring device |
| JPS618635A (en) * | 1984-06-25 | 1986-01-16 | Sukegawa Denki Kogyo Kk | Manufacture of sheathed temperature measuring resistor |
| JPS6375826U (en) * | 1986-11-05 | 1988-05-20 |
-
1989
- 1989-05-31 JP JP1989062495U patent/JPH088429Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002107233A (en) * | 2000-09-27 | 2002-04-10 | Toshiba Corp | Thermocouple device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH034237U (en) | 1991-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |