JPH031789Y2 - - Google Patents
Info
- Publication number
- JPH031789Y2 JPH031789Y2 JP16221584U JP16221584U JPH031789Y2 JP H031789 Y2 JPH031789 Y2 JP H031789Y2 JP 16221584 U JP16221584 U JP 16221584U JP 16221584 U JP16221584 U JP 16221584U JP H031789 Y2 JPH031789 Y2 JP H031789Y2
- Authority
- JP
- Japan
- Prior art keywords
- thermocouple
- temperature
- atmospheric gas
- protection tube
- measurement area
- 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
- 238000009529 body temperature measurement Methods 0.000 claims description 29
- 230000001590 oxidative effect Effects 0.000 claims description 24
- 238000005259 measurement Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 56
- 238000000137 annealing Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910000809 Alumel Inorganic materials 0.000 description 3
- 229910001179 chromel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- 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、熱処理炉の炉内温度測定等に用いら
れて好適な温度測定装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a temperature measuring device suitable for use in measuring the temperature inside a heat treatment furnace.
［従来の技術］
第３図は、従来の温度測定装置を箱形焼鈍炉１
に用いた状態を示す断面図である。すなわち、こ
の焼鈍炉１は、炉床２、炉構３の内面に電熱線４
を配設するとともに、受台５の上部に鋼帯コイル
６を配置し、該鋼帯コイル６を焼鈍可能としてい
る。ここで、焼鈍炉１は、雰囲気ガス供給管７、
アルメル・クロメル等のサーモカツプル８が挿通
されてなるサーモカツプル保護管９を備えてお
り、雰囲気ガス供給管７から供給される無酸化雰
囲気ガスとしてのH2ガスによつて炉内を充たし、
鋼帯コイル６に含有されているN2、Ｓ等の成分
の純化を図るとともに、サーモカツプル８によつ
て炉内温度を測定し、該温度を温度表示器１０に
表示可能としている。なお、１１は鋼帯コイル６
を覆つているインナカバーであり、雰囲気ガス供
給管７はこのインナカバー１１内にH2ガスを噴
出し、インナカバー１１の内部のH2ガス圧力を
その外径のH2ガス圧力よりも高く設定し、イン
ナカバー１１に覆われる鋼帯コイル６の周辺に純
粋なH2ガスの雰囲気を形成可能としている。[Prior art] Figure 3 shows a conventional temperature measuring device installed in a box-shaped annealing furnace 1.
FIG. That is, this annealing furnace 1 has a heating wire 4 on the inner surface of a hearth 2 and a furnace structure 3.
At the same time, a steel strip coil 6 is arranged on the upper part of the pedestal 5, and the steel strip coil 6 can be annealed. Here, the annealing furnace 1 includes an atmospheric gas supply pipe 7,
It is equipped with a thermocouple protection tube 9 in which a thermocouple 8 of alumel, chromel, etc. is inserted, and the inside of the furnace is filled with H 2 gas as a non-oxidizing atmosphere gas supplied from the atmosphere gas supply tube 7.
In addition to purifying components such as N 2 and S contained in the steel strip coil 6, the temperature inside the furnace is measured by a thermocouple 8, and the temperature can be displayed on a temperature indicator 10. In addition, 11 is a steel strip coil 6
The atmospheric gas supply pipe 7 spouts H 2 gas into the inner cover 11 to make the H 2 gas pressure inside the inner cover 11 higher than the H 2 gas pressure at its outer diameter. This makes it possible to create a pure H 2 gas atmosphere around the steel strip coil 6 covered by the inner cover 11.
しかしながら、第３図に示す温度測定装置にあ
つては、炉内に生ずるH2Sの腐食性ガスがサーモ
カツプル８およびサーモカツプル保護管９に接触
し、それらのサーモカツプル８、サーモカツプル
保護管９が容易に腐食して使用不能となる。 However, in the temperature measuring device shown in FIG . 9 easily corrodes and becomes unusable.
これに対し、第４図は、特開昭56−116636号に
開示されている温度測定装置を上記箱形焼鈍炉１
に用いた状態を示す断面図である。この温度測定
装置は、サーモカツプル１２をサーモカツプル保
護管１３に挿通するとともに、雰囲気ガスをサー
モカツプル保護管１３によつて炉内に供給可能と
するものである。この温度測定装置によれば、炉
内に位置するサーモカツプル１２がサーモカツプ
ル保護管１３を流れる無酸化雰囲気ガスによつて
保護され、H2S等の腐食性ガスの接触によつて腐
食することがない。 On the other hand, FIG. 4 shows a temperature measuring device disclosed in Japanese Patent Application Laid-Open No. 56-116636, which is installed in the box-shaped annealing furnace.
FIG. In this temperature measuring device, a thermocouple 12 is inserted into a thermocouple protection tube 13, and atmospheric gas can be supplied into the furnace through the thermocouple protection tube 13. According to this temperature measuring device, the thermocouple 12 located in the furnace is protected by the non-oxidizing atmospheric gas flowing through the thermocouple protection tube 13, and is prevented from being corroded by contact with corrosive gas such as H 2 S. There is no.
［考案が解決しようとする問題点］
しかしながら、上記第４図に示す温度測定装置
にあつては、サーモカツプル１２の周囲を多量の
雰囲気ガスが流れるため、サーモカツプル１２の
先端部が該雰囲気ガスによる冷却作用を受けて、
温度表示器１４に実際より低い温度を表示してし
まうことになる。[Problems to be solved by the invention] However, in the temperature measuring device shown in FIG. Due to the cooling effect of
This results in the temperature display 14 displaying a lower temperature than the actual temperature.
本考案は、温度測定域に位置するサーモカツプ
ルおよびその保護管を、温度測定域の腐食性ガス
との接触による腐食の発生から保護するととも
に、高精度の温度測定を可能とすることを目的と
する。 The purpose of this invention is to protect the thermocouple located in the temperature measurement area and its protection tube from corrosion caused by contact with corrosive gas in the temperature measurement area, and to enable highly accurate temperature measurement. do.
［問題点を解決するための手段］
上記目的を達成するために、本考案は、無酸化
雰囲気ガスが供給されている温度測定域の温度を
サーモカツプルによつて測定可能とする温度測定
装置において、比較的多量の無酸化雰囲気ガスを
温度測定域に供給可能とする雰囲気ガス供給管
と、サーモカツプルが挿通されてなる状態で雰囲
気ガス供給管の内部を延設され、比較的少量の無
酸化雰囲気ガスを温度測定域に供給可能とするサ
ーモカツプル保護管を有してなり、サーモカツプ
ル保護管を少なくとも雰囲気ガス供給管の温度測
定域に対する開口端部にまで延設するようにした
ものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a temperature measuring device that is capable of measuring the temperature of a temperature measuring area to which non-oxidizing atmospheric gas is supplied using a thermocouple. , an atmospheric gas supply pipe that can supply a relatively large amount of non-oxidizing atmospheric gas to the temperature measurement area, and a thermocouple inserted through the atmospheric gas supply pipe to extend the interior of the atmospheric gas supply pipe, allowing a relatively small amount of non-oxidizing atmospheric gas to be supplied to the temperature measurement area. It has a thermocouple protection tube that can supply atmospheric gas to the temperature measurement area, and the thermocouple protection tube extends at least to the open end of the atmospheric gas supply pipe to the temperature measurement area. .
［作用］
本考案によれば、温度測定域に位置するサーモ
カツプルおよびその保護管が、それらに接して流
れる純度の高い無酸化雰囲気ガスによつて保護さ
れ、温度測定域の腐食性ガスを接触することな
く、腐食の発生から保護可能とされる。また、サ
ーモカツプルの周囲を流れる無酸化雰囲気ガスは
比較的少量であることから、サーモカツプルの測
定結果が無酸化雰囲気ガスによる冷却作用の悪影
響を受けることなく、高精度の温度測定を可能と
する。[Function] According to the present invention, the thermocouple located in the temperature measurement area and its protection tube are protected by the highly pure non-oxidizing atmospheric gas flowing in contact with them, and the corrosive gas in the temperature measurement area is protected from contact. It is said that it is possible to protect against the occurrence of corrosion without any damage. In addition, since the amount of non-oxidizing atmospheric gas flowing around the thermocouple is relatively small, the measurement results of the thermocouple are not adversely affected by the cooling effect of the non-oxidizing atmospheric gas, making it possible to measure temperature with high precision. .
［実施例］
第１図は本考案の一実施例に係る温度測定装置
２０が適用されてなる箱形焼鈍路２１を示す断面
図、第２図は同温度測定装置２０の要部を破断し
て示す正面図である。[Example] Fig. 1 is a sectional view showing a box-shaped annealing path 21 to which a temperature measuring device 20 according to an embodiment of the present invention is applied, and Fig. 2 is a cross-sectional view showing a main part of the temperature measuring device 20. FIG.
箱形焼鈍炉２１は、炉床２２、炉構２３の内面
に電熱線２４を配設するとともに、受台２５の上
面に鋼帯コイル２６を配置し、該鋼帯コイル２６
を焼鈍可能としている。なお、２６Ａはインナカ
バーである。 The box-shaped annealing furnace 21 has a heating wire 24 arranged on the inner surface of a hearth 22 and a furnace structure 23, and a steel strip coil 26 arranged on the upper surface of a pedestal 25.
can be annealed. Note that 26A is an inner cover.
温度測定装置２０は、炉内外に渡つて配設さ
れ、雰囲気ガス供給管２７、サーモカツプル保護
管２８、サーモカツプル２９を有している。雰囲
気ガス供給管２７は、比較的多量の無酸化雰囲気
ガスを温度測定域としての炉内に供給可能として
いる。ここで、無酸化雰囲気ガスとしては、H2
ガス、N2ガス、Arガス、Heガス等が用いられ
る。サーモカツプル保護管２８は、アルメル・ク
ロメル等のサーモカツプル２９が挿通されてなる
状態で雰囲気ガス供給管２７の内部を延設され、
比較的少量の無酸化雰囲気ガスを炉内に供給可能
としている。 The temperature measuring device 20 is disposed inside and outside the furnace, and includes an atmospheric gas supply pipe 27, a thermocouple protection pipe 28, and a thermocouple 29. The atmospheric gas supply pipe 27 allows a relatively large amount of non-oxidizing atmospheric gas to be supplied into the furnace as a temperature measurement area. Here, the non-oxidizing atmospheric gas is H 2
Gas, N 2 gas, Ar gas, He gas, etc. are used. The thermocouple protection pipe 28 is extended inside the atmospheric gas supply pipe 27 with a thermocouple 29 made of alumel, chromel, etc. inserted therethrough.
A relatively small amount of non-oxidizing atmosphere gas can be supplied into the furnace.
サーモカツプル２９の先端部はサーモカツプル
保護管２８の炉内に対する開口端部より炉内側に
突出配置されるとともに、サーモカツプル保護管
２８の炉内に対する開口端部は雰囲気ガス供給管
２７の炉内に対する開口端部より炉内側に突出配
置されている。 The tip of the thermo couple 29 is arranged to protrude into the furnace from the open end of the thermo couple protection tube 28 to the inside of the furnace, and the open end of the thermo couple protection tube 28 to the inside of the furnace is connected to the inside of the atmosphere gas supply pipe 27. It is arranged to protrude inward from the opening end of the furnace.
なお、無酸化雰囲気ガスは、主配管３０、開閉
弁３１、流量計３２、分岐管３３を経て、雰囲気
ガス供給管２７とサーモカツプル保護管２８のそ
れぞれに供給可能とされている。また、サーモカ
ツプル２９は、キヤツプ３４によつてサーモカツ
プル保護管２８の炉外の開口端に圧密状態で装着
されているゴムシール３５を経て、サーモカツプ
ル保護管２８の外部に引き出され、温度表示器３
６に接続可能とされている。 Note that the non-oxidizing atmospheric gas can be supplied to each of the atmospheric gas supply pipe 27 and the thermocouple protection pipe 28 via the main pipe 30, the on-off valve 31, the flow meter 32, and the branch pipe 33. Further, the thermocouple 29 is pulled out of the thermocouple protection tube 28 by the cap 34 through a rubber seal 35 which is attached in a compressed state to the open end of the thermocouple protection tube 28 outside the furnace, and the thermocouple protection tube 28 is pulled out to the outside of the thermocouple protection tube 28. 3
6 can be connected.
次に、上記実施例の作用について説明する。上
記温度測定装置２０によれば、炉内に位置するサ
ーモカツプル２９およびその保護管２８が、それ
らに接して流れる純度の高い無酸化雰囲気ガスに
よつて保護され、炉内のH2S等の腐食性ガスと接
触することなく、腐食の発生から保護可能とされ
る。また、サーモカツプル２９の周囲を流れる無
酸化雰囲気ガスは比較的少量であることから、サ
ーモカツプル２９の測定結果が無酸化雰囲気ガス
による冷却作用の悪影響を受けることがなく、高
精度の温度測定を可能とされる。 Next, the operation of the above embodiment will be explained. According to the temperature measuring device 20, the thermocouple 29 and its protection tube 28 located in the furnace are protected by the high purity non-oxidizing atmosphere gas flowing in contact with them, and the H 2 S etc. in the furnace are protected. It is said to be able to protect against corrosion without coming into contact with corrosive gases. In addition, since the amount of non-oxidizing atmospheric gas flowing around the thermo couple 29 is relatively small, the measurement results of the thermo couple 29 are not adversely affected by the cooling effect of the non-oxidizing atmospheric gas, allowing highly accurate temperature measurement. It is considered possible.
なお、上記温度測定装置２０にあつては、前述
のように、サーモカツプル２９をサーモカツプル
保護管２８の炉内に対する開口端部より例えば５
〜10mm程度炉内側に突出し、サーモカツプル保護
管２８を雰囲気ガス供給管２７の炉内に対する開
口端部より例えば10mm程度炉内側に突出すること
により、サーモカツプル２９に多量の無酸化雰囲
気ガスが接触して、無酸化雰囲気ガスの冷却作用
を受けることが確実に防止され、サーモカツプル
２９によつてより正確な温度測定を行なうことを
可能とされる。 In addition, in the case of the temperature measuring device 20, as described above, the thermocouple 29 is inserted from the open end of the thermocouple protection tube 28 into the furnace, for example, by
A large amount of non-oxidizing atmospheric gas comes into contact with the thermocouple 29 by protruding approximately 10 mm inside the furnace and protruding the thermo couple protection tube 28 approximately 10 mm from the open end of the atmospheric gas supply pipe 27 into the furnace. As a result, it is reliably prevented from receiving the cooling effect of the non-oxidizing atmospheric gas, and the thermocouple 29 enables more accurate temperature measurement.
次に、本考案の具体的実施結果について説明す
る。すなわち、サーモカツプル２９としてアルメ
ル・クロメル・BICCサーモカツプルを用い、雰
囲気ガス供給管２７の管径を１インチ、サーモカ
ツプル保護管２８の管径を３／８インチとし、雰
囲気ガス供給管２７から4.5m3／時間の無酸化雰
囲気ガスを噴出するとともに、サーモカツプル保
護管２８から0.5m3／時間の無酸化雰囲気ガスを
噴出した時に、炉内温度1200℃×10時間の使用状
態を８回繰返しても、高精度の温度測定が可能で
あつた。その後、使用を重ねたところ、12回〜16
回の収用経過後に温度偏差を生ずるものが発生し
た。したがつて、この温度測定条件下において
は、サーモカツプルの取替え基準使用回数を８回
とし、検定の結果によつて９回以上の使用に供す
るか否かを決定すればよい。なお、従来の温度測
定装置においては、炉内温度1200℃×10時間の使
用状態下にあつては、サーモカツプルが１回の使
用で腐食し、再使用に耐えることができなかつ
た。 Next, concrete implementation results of the present invention will be explained. That is, an alumel/chromel/BICC thermocouple is used as the thermocouple 29, the diameter of the atmosphere gas supply pipe 27 is 1 inch, the diameter of the thermocouple protection tube 28 is 3/8 inch, and the diameter of the atmosphere gas supply pipe 27 is 4.5 inches. When non-oxidizing atmosphere gas of m 3 /hour is ejected and non-oxidizing atmosphere gas of 0.5 m 3 /hour is ejected from the thermocouple protection tube 28, the usage condition of furnace temperature 1200℃ x 10 hours is repeated 8 times. However, it was possible to measure temperature with high accuracy. After repeated use, I found 12 to 16 times.
Temperature deviations occurred after recovery. Therefore, under these temperature measurement conditions, the standard number of times the thermocouple should be replaced is 8 times, and it may be determined whether or not it should be used more than 9 times based on the test results. In addition, in the conventional temperature measuring device, when the temperature inside the furnace was 1200° C. for 10 hours, the thermocouple corroded after one use and could not withstand reuse.
なお、本考案において、サーモカツプルの長
さ、およびサーモカツプル保護管の温度測定域に
対する開口端部からのサーモカツプルの突出量は
調整可能とされ、サーモカツプルを温度測定域の
測定条件に適応可能とされている。 In addition, in the present invention, the length of the thermo couple and the amount of protrusion of the thermo couple from the open end of the thermo couple protection tube relative to the temperature measurement range can be adjusted, making it possible to adapt the thermo couple to the measurement conditions of the temperature measurement range. It is said that
［考案の効果］
以上のように、本考案は、無酸化雰囲気ガスが
供給されている温度測定域の温度をサーモカツプ
ルによつて測定可能とする温度測定装置におい
て、比較的多量の無酸化雰囲気ガスを温度測定域
に供給可能とする雰囲気ガス供給管と、サーモカ
ツプルが挿通されてなる状態で雰囲気ガス供給管
の内部に延設され、比較的多量の無酸化雰囲気ガ
スを温度測定域に供給可能とするサーモカツプル
保護管を有してなり、サーモカツプル保護管を少
なくとも雰囲気ガス供給管の温度測定域に対する
開口端部にまで延設するようにしたものである。
したがつて、温度測定域に位置するサーモカツプ
ルおよびその保護管を、温度測定域の腐食性ガス
との接触による腐食の発生から保護するととも
に、高精度の温度測定が可能となる。[Effects of the invention] As described above, the present invention provides a temperature measuring device that can measure the temperature of a temperature measurement area to which a non-oxidizing atmosphere gas is supplied by using a thermocouple. An atmosphere gas supply pipe that can supply gas to the temperature measurement area, and a thermo couple inserted and extended inside the atmosphere gas supply pipe to supply a relatively large amount of non-oxidizing atmosphere gas to the temperature measurement area. The thermocouple protection tube extends at least to the open end of the atmospheric gas supply tube to the temperature measurement area.
Therefore, the thermocouple and its protective tube located in the temperature measurement area are protected from corrosion due to contact with corrosive gas in the temperature measurement area, and highly accurate temperature measurement is possible.
第１図は本考案の一実施例が適用されてなる焼
鈍炉を示す断面図、第２図は本考案の一実施例の
要部を破断して示す正面図、第３図は従来の温度
装定装置が適用されてなる焼鈍炉を示す断面図、
第４図は従来の他の温度測定装置が適用されてな
る焼鈍炉を示す断面図である。
２０……温度測定装置、２１……焼鈍炉、２７
……雰囲気ガス供給管、２８……サーモカツプル
保護管、２９……サーモカツプル。
Fig. 1 is a sectional view showing an annealing furnace to which an embodiment of the present invention is applied, Fig. 2 is a front view with a cutaway view of essential parts of an embodiment of the invention, and Fig. 3 is a conventional annealing furnace. A sectional view showing an annealing furnace to which a mounting device is applied,
FIG. 4 is a sectional view showing an annealing furnace to which another conventional temperature measuring device is applied. 20... Temperature measuring device, 21... Annealing furnace, 27
... Atmosphere gas supply pipe, 28 ... Thermo couple protection tube, 29... Thermo couple.
Claims (1)
域の温度をサーモカツプルによつて測定可能と
する温度測定装置において、比較的多量の無酸
化雰囲気ガスを温度測定域に供給可能とする雰
囲気ガス供給管と、サーモカツプルが挿通され
てなる状態で雰囲気ガス供給管の内部に延設さ
れ、比較的少量の無酸化雰囲気ガスを温度測定
域に供給可能とするサーモカツプル保護管を有
してなり、サーモカツプル保護管を少なくとも
雰囲気ガス供給管の温度測定域に対する開口端
部にまで延設することを特徴とする温度測定装
置。 (2) サーモカツプルの先端部をサーモカツプル保
護管の温度測定域に対する開口端部より温度測
定域側に突出配置するとともに、サーモカツプ
ル保護管の温度測定域に対する開口端部を雰囲
気ガス供給管の温度測定域に対する開口端部よ
り温度測定域側に突出配置する実用新案登録請
求の範囲第１項に記載の温度測定装置。[Claims for Utility Model Registration] (1) In a temperature measuring device that is capable of measuring the temperature of a temperature measurement area to which non-oxidizing atmospheric gas is supplied using a thermocouple, a relatively large amount of non-oxidizing atmospheric gas is An atmospheric gas supply pipe that can be supplied to the measurement area, and a thermo couple inserted and extended inside the atmospheric gas supply pipe, making it possible to supply a relatively small amount of non-oxidizing atmospheric gas to the temperature measurement area. 1. A temperature measurement device comprising a thermocouple protection tube, the thermocouple protection tube extending at least to an open end of an atmospheric gas supply tube to a temperature measurement area. (2) The tip of the thermocouple should protrude toward the temperature measurement area from the open end of the thermocouple protection tube for the temperature measurement area, and the open end of the thermocouple protection tube for the temperature measurement area should be placed so that the open end of the thermocouple protection tube is connected to the atmospheric gas supply pipe. The temperature measuring device according to claim 1, wherein the temperature measuring device is arranged to protrude toward the temperature measuring region from the opening end of the temperature measuring region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16221584U JPH031789Y2 (en) | 1984-10-29 | 1984-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16221584U JPH031789Y2 (en) | 1984-10-29 | 1984-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6179231U JPS6179231U (en) | 1986-05-27 |
| JPH031789Y2 true JPH031789Y2 (en) | 1991-01-18 |
Family
ID=30720099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16221584U Expired JPH031789Y2 (en) | 1984-10-29 | 1984-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031789Y2 (en) |
-
1984
- 1984-10-29 JP JP16221584U patent/JPH031789Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6179231U (en) | 1986-05-27 |
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