Temperature measuring device
Disclosed is a temperature measuring device. The temperature measuring device includes: a thermo-well tube; and a cable or wire type temperature measuring means which is installed in a thermo-well tube, wherein temperature measuring means has temperature detecting sensors disposed at an intermediate portion thereof, and the temperature detecting sensors can be moved axially in the thermo-well tube by applying tension to both ends of the cable or wire type temperature measuring means. The present invention also provides a reaction tube in which the temperature measuring device is disposed axially, and a reactor including at least one temperature measuring device or reaction tube as described above.
1. A temperature measuring device comprising:
a thermo-well tube;
a cable or wire type temperature measuring means which is installed in a thermo-well tube; and
pulleys installed at outside of openings formed at both ends of the thermo-well tube, respectively,
wherein the temperature measuring means has temperature detecting sensors disposed at an intermediate portion thereof,
the temperature detecting sensors are moved axially in the thermo-well tube by applying tension to both ends of the cable or wire type temperature measuring means,
the temperature detecting sensors include a pair of temperature sensors which are contained in a tube type junction portion and connected to each other, or a pair of temperature sensors which are respectively contained in each tube type junction portion and connected to each other by a connection portion, and
the pulleys are used when the tension is applied to the cable or wire type temperature measuring means.
2. The temperature measuring device as claimed in claim 1 , wherein the cable or wire type temperature measuring means has flexibility.
3. The temperature measuring device as claimed in claim 1 , wherein the cable or wire type temperature measuring means includes a thermocouple or a resistance temperature detector.
4. The temperature measuring device as claimed in claim 1 , wherein the thermo-well tube is filled with oil.
5. The temperature measuring device as claimed in claim 1 , wherein the junction portions are filled with oil.
6. The temperature measuring device as claimed in claim 1 , wherein the junction portions have an outer diameter which is equal to or less than 90% that of an inner diameter of the thermo-well tube.
7. A reaction tube in which the temperature measuring device claimed in claim 1 is disposed axially,
the temperature measuring device comprising:
a thermo-well tube;
a cable or wire type temperature measuring means which is installed in a thermo-well tube; and
pulleys installed at outside of openings formed at both ends of the thermo-well tube, respectively,
wherein temperature measuring means has temperature detecting sensors disposed at an intermediate portion thereof,
the temperature detecting sensors are moved axially in the thermo-well tube by applying tension to both ends of the cable or wire type temperature measuring means,
the temperature detecting sensors include a pair of temperature sensors which are contained in a tube type junction portion and connected to each other, or a pair of temperature sensors which are respectively contained in each tube type junction portion and connected to each other by a connection portion, and
the pulleys are used when the tension is applied to the cable or wire type temperature measuring means.
8. The reaction tube as claimed in claim 7 , wherein the cable or wire type temperature measuring means has flexibility.
9. The reaction tube as claimed in claim 7 , wherein the cable or wire type temperature measuring means includes a thermocouple or a resistance temperature detector.
10. A reactor comprising at least one temperature measuring device claimed in claim 1 ,
the temperature measuring device comprising:
a thermo-well tube;
a cable or wire type temperature measuring means which is installed in a thermo-well tube; and
pulleys installed at outside of openings formed at both ends of the thermo-well tube, respectively,
wherein temperature measuring means has temperature detecting sensors disposed at an intermediate portion thereof,
the temperature detecting sensors are moved axially in the thermo-well tube by applying tension to both ends of the cable or wire type temperature measuring means,
the temperature detecting sensors include a pair of temperature sensors which are contained in a tube type junction portion and connected to each other, or a pair of temperature sensors which are respectively contained in each tube type junction portion and connected to each other by a connection portion, and
the pulleys are used when the tension is applied to the cable or wire type temperature measuring means.
11. The reactor as claimed in claim 10 , wherein the cable or wire type temperature measuring means has flexibility.
12. The reactor as claimed in claim 10 , wherein the cable or wire type temperature measuring means includes a thermocouple or a resistance temperature detector.
13. A reactor comprising at least one reaction tube claimed in claim 7 .