Mold for continuous casting
The primary object of the present invention is to provide a mold for continuous casting including a temperature detection unit which can detect the temperature of a copper plate of the mold with high precision, and can be easily inserted into and pulled out of the copper plate. The present invention includes: a main body; and a temperature detection unit which is inserted in an insertion hole in the main body, and detects temperature inside the mold. The temperature detection unit includes: an FBG sensor inserted in a protection tube which can be deformed in a radial direction; and a support member which supports the FBG sensor along the longitudinal direction. At a temperature detection point, the protection tube in which the FBG sensor is inserted is held between a stretched member in the support member and an inner surface of the insertion hole.
1. A mold for continuous casting comprising:
a main body of the mold for continuous casting; and
a temperature detection unit which is inserted in an insertion hole formed in the main body of the mold, and detects temperature inside the mold;
wherein the temperature detection unit includes,
an FBG (Fiber Bragg Grating) sensor inserted in a protection tube which can be deformed in a radial direction, and
a support member in which a groove is formed along a longitudinal direction, and which supports the FBG sensor along the longitudinal direction; and
at a temperature detection point, the protection tube in which the FBG sensor is inserted is held between a stretched member stretched across an opening of the groove in the support member and an inner surface of the insertion hole.
2. A mold for continuous casting comprising:
a main body of the mold for continuous casting; and
a temperature detection unit which is inserted in an insertion hole formed in the main body of the mold, and detects temperature inside the mold;
wherein the temperature detection unit includes,
two FBG sensors respectively inserted in protection tubes which can be deformed in a radial direction, and
a support member in which two grooves opposed in a radial direction are formed along a longitudinal direction, and which supports the two FBG sensors along the longitudinal direction; and
at temperature detection points, the protection tubes in which the FBG sensors are inserted are each held between a stretched member stretched across openings of the respective two grooves in the support member and an inner surface of the insertion hole.
3. The mold for continuous casting according to claim 2 , wherein in the insertion hole, one of the FBG sensors is arranged on a molten-steel face side of the main body of the mold, and the other of the FBG sensors is arranged on a cooled face side of the main body of the mold.
4. The mold for continuous casting according to claim 1 , wherein the temperature detection unit is inserted from at least one of an upper, lower, and lateral sides of the main body of the mold.
5. The mold for continuous casting according to claim 1 , wherein the FBG sensor is arranged on a diameter, in a thickness direction of the main body of the mold, of the insertion hole.
6. The mold for continuous casting according to claim 1 , wherein the protection tube is formed to each have an inner diameter of no more than 0.5 mm, and the inner diameter of the protection tube is greater than an outer diameter of the FBG sensor even when the protection tube is deformed in the radial direction.
7. The mold for continuous casting according to claim 1 , wherein the support member includes, along the longitudinal direction, a small diameter portion on which the stretched member is arranged and a large diameter portion having a diameter greater than the small diameter portion, and the temperature detection point of the FBG sensor is located in the small diameter portion.
8. The mold for continuous casting according to claim 7 , wherein the FBG sensor is arranged between an outer side of the stretched member and an inner surface of the insertion hole at the temperature detection point, and arranged on an inner side of the stretched member opposed to an inner surface of the groove in the small diameter portion not containing the temperature detection point.
9. The mold for continuous casting according to claim 1 , wherein the stretched member is made of a heat-resistant fiber.
10. The mold for continuous casting according to claim 2 , wherein the temperature detection unit is inserted from at least one of an upper, lower, and lateral sides of the main body of the mold.
11. The mold for continuous casting according to claim 3 , wherein the temperature detection unit is inserted from at least one of an upper, lower, and lateral sides of the main body of the mold.
12. The mold for continuous casting according to claim 2 , wherein the FBG sensors are arranged on a diameter, in a thickness direction of the main body of the mold, of the insertion hole.
13. The mold for continuous casting according to claim 3 , wherein the FBG sensors are arranged on a diameter, in a thickness direction of the main body of the mold, of the insertion hole.
14. The mold for continuous casting according to claim 2 , wherein the protection tubes are formed to each have an inner diameter of no more than 0.5 mm, and the inner diameters of the protection tubes are greater than outer diameters of the FBG sensors even when the protection tubes are deformed in the radial direction.
15. The mold for continuous casting according to claim 3 , wherein the protection tubes are formed to each have an inner diameter of no more than 0.5 mm, and the inner diameters of the protection tubes are greater than outer diameters of the FBG sensors even when the protection tubes are deformed in the radial direction.
16. The mold for continuous casting according to claim 2 , wherein the support member includes, along the longitudinal direction, a small diameter portion on which the stretched member is arranged and a large diameter portion having a diameter greater than the small diameter portion, and the temperature detection points of the FBG sensors are located in the small diameter portion.
17. The mold for continuous casting according to claim 3 , wherein the support member includes, along the longitudinal direction, a small diameter portion on which the stretched member is arranged and a large diameter portion having a diameter greater than the small diameter portion, and the temperature detection points of the FBG sensors are located in the small diameter portion.
18. The mold for continuous casting according to claim 16 , wherein the FBG sensors are arranged between an outer side of the stretched member and an inner surface of the insertion hole at the temperature detection points, and arranged on an inner side of the stretched member opposed to inner surfaces of the grooves in the small diameter portion not containing the temperature detection points.
19. The mold for continuous casting according to claim 17 , wherein the FBG sensors are arranged between an outer side of the stretched member and an inner surface of the insertion hole at the temperature detection points, and arranged on an inner side of the stretched member opposed to inner surfaces of the grooves in the small diameter portion not containing the temperature detection points.
20. The mold for continuous casting according to claim 2 , wherein the stretched member is made of a heat-resistant fiber.