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CN-121994029-A - Heating furnace door heat radiation isolation system and application

CN121994029ACN 121994029 ACN121994029 ACN 121994029ACN-121994029-A

Abstract

The invention discloses a heating furnace door heat radiation isolation system and application thereof, comprising a high-temperature protection component arranged in the junction area of a heating furnace and casting equipment of a continuous casting production line, wherein the high-temperature protection component comprises a first furnace door and a second furnace door which is arranged in parallel and at intervals with the first furnace door, the first furnace door and the second furnace door which is arranged in parallel and at intervals form a double-barrier structure, the interval between the first furnace door and the second furnace door which is arranged in parallel and at intervals is 1000-2000mm, the interval between the first furnace door and the second furnace door which is arranged in parallel and at intervals is 1200mm, and the thickness of an air heat insulation layer is more than or equal to 800mm. The furnace door heat radiation isolation system of the heating furnace is suitable for high-temperature protection of the junction area of the heating furnace and casting equipment in the continuous casting production line.

Inventors

  • SHANG ZHIYU
  • YAO LIJUN
  • ZHANG WENKAI
  • LIU PENG
  • WANG DONGKAI
  • WU XIAOJING

Assignees

  • 包头钢铁（集团）有限责任公司

Dates

Publication Date
20260508
Application Date
20260309

Claims (9)

  1. 1. The heating furnace door heat radiation isolation system is characterized by comprising a high-temperature protection assembly (1) arranged in the junction area of a heating furnace and casting equipment of a continuous casting production line, wherein the high-temperature protection assembly (1) comprises a first furnace door (2) and a second furnace door (3) arranged in parallel and at intervals with the first furnace door (2); The first furnace door (2) and the second furnace door (3) which are arranged in parallel at intervals form a double-barrier structure.
  2. 2. The heat radiation isolation system of the furnace door of the heating furnace according to claim 1, wherein the distance between the first furnace door (2) and the second furnace door (3) which are arranged in parallel at intervals is 1000-2000mm.
  3. 3. The heat radiation isolation system of the heating furnace door according to claim 1, wherein the distance between the first furnace door (2) and the second furnace door (3) which are arranged in parallel at intervals is 1200mm, and the thickness of the air heat insulation layer is more than or equal to 800mm.
  4. 4. The heat radiation isolation system of the heating furnace door according to claim 3, wherein the first furnace door (2) is kept in a normally closed state, the sealing pressure is more than or equal to 0.1MPa, the second furnace door (3) is lifted by adopting a pneumatic lifting device, and the pneumatic lifting device adopts a cylinder with a cylinder stroke of 800mm and a response time of less than or equal to 3s.
  5. 5. The heat radiation isolation system of a heating furnace door according to claim 4, further comprising a fire baffle plate (4) arranged at an outlet position of the heating furnace of the continuous casting production line, wherein the fire baffle plate (4) comprises a metal frame (5), the metal frame (5) comprises two transverse edges (6) and two longitudinal edges (7), and a plurality of transverse fire baffle plates (8) which are arranged in the same direction with the transverse edges (6) are connected between the two longitudinal edges (7).
  6. 6. The heat radiation isolation system of the heating furnace door according to claim 5, wherein a plurality of longitudinal fire baffles (9) which are arranged in the same direction as the longitudinal edges (7) are connected between the two transverse edges (6), and the plurality of transverse fire baffles (8) and the plurality of longitudinal fire baffles (9) are arranged in a staggered manner to form a grid structure for blocking fire.
  7. 7. The heat radiation isolation system of the heating furnace door according to claim 6, wherein the fire baffle plate (4) is fixed above a heating furnace channel opening of the continuous casting production line, and the fire baffle plate (4) is detachably connected to the heating furnace channel opening of the continuous casting production line.
  8. 8. The heat radiation isolation system of the heating furnace door according to claim 7, wherein the detachable connection between the fire baffle plate (4) and the heating furnace channel opening of the continuous casting production line is a bolt connection.
  9. 9. Use of a heat radiation isolation system for a furnace door of a heating furnace according to claim 8, comprising the steps of: Step 1, space reconstruction construction, namely installing a second furnace door at a position away from the first furnace door, moving the power distribution cabinet south along the sliding rail for 1.5m, and laying high-temperature-resistant cables again, wherein the high-temperature-resistant cables are of YGC-F46R type, and the sectional area is 35mm <2 >; Step 2, optimizing a thermodynamic system, disassembling an original DN50 burner, installing a DN80 heat-resistant alloy burner, adding a fuel gas regulating valve in a matched manner, wherein the fuel gas regulating valve comprises a caliber G3/4' and flow characteristics and the like; And 3, installing a thermocouple (index number K) at the position 300mm above the furnace roller, connecting a PLC controller, setting model S7-1500, and setting a temperature threshold value of 1030 ℃ plus or minus 10 ℃. And 4, starting the double-barrier system, namely keeping the first furnace door in a normally closed state, wherein the sealing pressure is more than or equal to 0.1MPa, adding a pneumatic starting and stopping device to the second furnace door, and enabling the cylinder stroke to be 800mm and the response time to be less than or equal to 3s.

Description

Heating furnace door heat radiation isolation system and application Technical Field The invention belongs to the technical field of high-temperature equipment protection in the metallurgical industry, and particularly relates to a heating furnace door heat radiation isolation system and application thereof. Background In the continuous casting production line, the joint area of the outlet of the heating furnace and the casting machine has the technical bottleneck that the equipment loss is serious, the temperature of the hearth of the heating furnace reaches 1050 ℃, the furnace door is subjected to quenching shock caused by frequent bursting (7 times of annual bursting) of a horizontal roller cooling water pipe, and the alloy furnace door is scrapped for 4 sets every year. The heat radiation conduction is out of control, the surface temperature of the casting machine equipment still reaches 90 ℃ despite the additionally arranged water-cooling fireproof plate, and the equipment inspection is forced to be cooled by the process (single production stopping is more than or equal to 2 hours). The existing scheme adopts an intensified cooling structure, but cannot block the heat radiation conduction path. By adding the heat shield, the furnace temperature uniformity is deteriorated. The fundamental contradiction is that the spatial relationship of the heat source to the protected equipment is not reconstructed. In view of the above factors, a heating furnace door heat radiation isolation system and application thereof are provided, which are used for high-temperature protection of the interface area of a heating furnace and casting equipment in a continuous casting production line. Disclosure of Invention The invention aims to provide a heating furnace door heat radiation isolation system and application thereof, so as to solve the problems in the background technology. The invention aims at realizing the technical scheme that the heating furnace door heat radiation isolation system comprises a high-temperature protection component arranged in the junction area of a heating furnace and casting equipment of a continuous casting production line, wherein the high-temperature protection component comprises a first furnace door and a second furnace door which is arranged in parallel and at intervals with the first furnace door; The first furnace door and the second furnace door which are arranged in parallel at intervals form a double-barrier structure. Further, the distance between the first furnace door and the second furnace door which are arranged in parallel at intervals is 1000-2000mm. Further, the distance between the first furnace door and the second furnace door which are arranged in parallel at intervals is 1200mm, and the thickness of the air heat insulation layer is more than or equal to 800mm. Further, the first furnace door is kept in a normally closed state, the sealing pressure is more than or equal to 0.1MPa, the second furnace door is lifted by adopting a pneumatic lifting and closing device, wherein the pneumatic lifting and closing device adopts a cylinder, the cylinder stroke is 800mm, and the response time is less than or equal to 3s. Further, still include the flame retardant coating that sets up in continuous casting production line's heating furnace exit position, the flame retardant coating includes the metal frame, the metal frame includes two horizontal limits and two longitudinal sides, connects many and horizontal flame retardant coating that horizontal limit syntropy set up between two longitudinal sides. Further, a plurality of longitudinal fire baffles which are arranged in the same direction as the longitudinal edges are connected between the two transverse edges, and the transverse fire baffles and the longitudinal fire baffles are arranged in a staggered mode to form a grid structure for blocking fire. Further, the fire baffle is fixed above the heating furnace mouth of the continuous casting production line, and the fire baffle is detachably connected to the heating furnace mouth of the continuous casting production line. Further, the detachable connection between the fire baffle plate and the heating furnace channel mouth of the continuous casting production line is a bolt connection. An application of a heating furnace door heat radiation isolation system comprises the following steps: Step 1, space reconstruction construction, namely installing a second furnace door at a position away from the first furnace door, moving the power distribution cabinet south along the sliding rail for 1.5m, and laying high-temperature-resistant cables again, wherein the high-temperature-resistant cables are of YGC-F46R type, and the sectional area is 35mm <2 >; Step 2, optimizing a thermodynamic system, disassembling an original DN50 burner, installing a DN80 heat-resistant alloy burner, adding a fuel gas regulating valve in a matched manner, wherein the fuel gas regulating valve comprises a calib