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CN-122015501-A - Device and method for constructing staggered joint type heat preservation layer of furnace tube of ethylene cracking furnace

CN122015501ACN 122015501 ACN122015501 ACN 122015501ACN-122015501-A

Abstract

The invention relates to a device and a method for constructing a staggered joint type heat preservation layer of an ethylene cracking furnace tube. The construction device is used for coating a plurality of layers of fiber mats on the surface of a furnace tube in a staggered manner, and comprises a first arc plate and a second arc plate, wherein the end parts of the first arc plate and the second arc plate are mutually hinged, one end of the first arc plate and one end of the second arc plate, which are far away from a hinge point of the first arc plate and the second arc plate, are fixedly connected with a mounting plate, the mounting plate is parallel to the axis of the first arc plate/the second arc plate, a limiting piece used for fixing the two ends of the fiber mats is arranged on the mounting plate, the mounting plate is used for coating the fiber mats on the surface of the furnace tube in the rotation process of the first arc plate and the second arc plate, and a fixing mechanism used for fixing the fiber mats is further arranged on the construction device.

Inventors

  • LI WENWEI
  • JI LU

Assignees

  • 中国化学工程第三建设有限公司

Dates

Publication Date
20260512
Application Date
20260204

Claims (9)

  1. 1. The utility model provides a thermal insulation layer construction equipment of ethylene cracking furnace boiler tube staggered joint formula for at the fibrous felt of a plurality of layers of cladding of boiler tube surface staggered joint formula, its characterized in that includes arc (1) and No. two arc (2) that tip articulated each other, arc (1) and No. two arc (2) keep away from its pin joint's one end all fixedly connected with mounting panel (3), mounting panel (3) are parallel with arc (1)/No. two arc (2) axis, be equipped with on mounting panel (3) and be used for carrying out fixed locating part (4) to fibrous felt's both ends, mounting panel (3) are used for cladding fibrous felt at the boiler tube surface in arc (1) and No. two arc (2) rotation in-process; The construction device is also provided with a fixing mechanism for fixing the fiber mat.
  2. 2. The construction device for the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace according to claim 1, wherein the fixing mechanism comprises two fixing modules which are respectively arranged in the length direction of the mounting plates (3), and each fixing module comprises a fixing subunit which is respectively arranged at the corresponding positions of the two mounting plates (3); The fixing subunit comprises a semicircular cylinder track (5) fixedly arranged on the mounting plate (3), a semicircular cylinder rotor (6) rotationally arranged in the semicircular cylinder track (5), a driving motor (7) fixedly arranged on the semicircular cylinder track (5), a gear (8) fixedly arranged at the output shaft end of the driving motor (7) and a switch arranged on the first arc plate (1)/the second arc plate (2) and used for controlling the driving motor (7); The semi-cylindrical rotor (6) is provided with a hole (9) for penetrating through an iron wire, the outer ring of the semi-cylindrical rotor (6) is provided with a plurality of tooth grooves corresponding to the gears (8), the semi-cylindrical tracks (5) on the two mounting plates (3) form a complete cylindrical track, and the semi-cylindrical rotors (6) on the two mounting plates (3) form a complete cylinder and can rotate in the cylindrical track.
  3. 3. The construction device for the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace according to claim 2, wherein the limiting piece (4) is of a conical structure.
  4. 4. The construction device for the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace according to claim 3, wherein the mounting plate (3) is provided with a through hole (10), and the limiting piece (4) is movably arranged at the through hole (10); The driving motor (7) is further provided with a second output shaft, the second output shaft is fixedly provided with a screw rod (11), an outer ring of the screw rod (11) is movably sleeved with a sleeve (12), the sleeve (12) is in threaded connection with the screw rod (11), the sleeve (12) is fixedly connected with the limiting piece (4), and the driving motor (7) drives the limiting piece (4) to be separated from the fibrofelt when screwing down the iron wire.
  5. 5. The construction device for the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace according to claim 4 is characterized in that a pulley (13) is rotatably arranged on the first arc-shaped plate (1), and a connecting rope (14) is movably arranged on the first arc-shaped plate (1) along the surface of the first arc-shaped plate; One end of the connecting rope (14) is fixedly connected with a magnet (15), and the magnet (15) is used for being adsorbed on an iron block of the second arc-shaped plate (2); The other end of the connecting rope (14) bypasses the pulley (13) and is connected with a collision mechanism for striking the end of the iron wire.
  6. 6. The construction device for the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace according to claim 5, wherein the collision mechanism comprises two impact blocks (16) movably arranged on a mounting plate (3) connected with an arc-shaped plate (1), and a reset spring (17) arranged on the mounting plate (3) and used for resetting the impact blocks (16).
  7. 7. The construction device for the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace according to claim 6, wherein two mounting grooves (18) are formed in the mounting plate (3), the return spring (17) is arranged in the mounting grooves (18), and the impact block (16) is movably arranged in the mounting grooves (18).
  8. 8. The device for constructing the staggered joint type heat preservation layer of the furnace tube of the ethylene cracking furnace as claimed in claim 7, wherein the impact block (16) is provided with an arc chamfer (19).
  9. 9. A method for constructing a staggered heat insulation layer for an ethylene cracking furnace tube by using the staggered heat insulation layer construction device for an ethylene cracking furnace tube according to any one of claims 1-8, which is characterized by comprising the following steps: s1, cutting a fiber mat and an iron wire into sections according to the required length; s2, rotating the first arc-shaped plate (1) and the second arc-shaped plate (2) to enable the two mounting plates (3) on the first arc-shaped plate (1) and the second arc-shaped plate (2) to be far away from each other, and fixing the two ends of the fiber mat by using the limiting piece (4) to fix the fiber mat on the first arc-shaped plate (1) and the second arc-shaped plate (2); S3, sticking the middle part of the fiber mat on the surface of the furnace tube, and moving the first arc plate (1) and the second arc plate (2) towards the direction away from a user, so that the two mounting plates (3) are close to each other, and the fiber mat is coated on the surface of the furnace tube; s4, fixing the fiber felt by using a fixing mechanism; and S5, coating the surface of the fiber felt which is coated just for a plurality of times, and staggering the joint seams of two adjacent layers of fiber felts.

Description

Device and method for constructing staggered joint type heat preservation layer of furnace tube of ethylene cracking furnace Technical Field The invention belongs to the technical field of furnace tube heat preservation construction equipment, and particularly relates to a device and a method for constructing a staggered joint type heat preservation layer of a furnace tube of an ethylene cracking furnace. Background The ethylene cracking furnace is core equipment in petrochemical industry, and the furnace tube runs at high temperature for a long time and needs to be coated with high-performance ceramic fiber felt for heat preservation so as to reduce heat loss and ensure safe production. The traditional furnace tube heat preservation construction process is purely manual operation, a worker needs to pass one end of a coiled ceramic fiber mat from the upper part of the furnace tube, draw out the ceramic fiber mat from the lower part to form a circle, and tie up and fix the ceramic fiber mat by stainless steel wires while tightly tightening the two ends of the fiber mat to ensure close fitting. The process needs to be repeatedly carried out to realize the process requirements of multi-layer, same-layer staggered joint and interlayer seam pressing. The traditional method has the obvious defects that 1, the labor intensity is extremely high, the construction efficiency is low, 2, the tightening degree and the bundling tightness of the fiber mat depend on the experience of workers, the quality is not easy to be uniform, and 3, the iron wire bundling also needs to be manually surrounded and screwed, so that the operation is complex. Therefore, a special device and method capable of reducing labor intensity and improving construction efficiency and quality consistency are needed. Disclosure of Invention The invention aims to solve the problems in the prior art and provides a device and a method for constructing a staggered joint type heat preservation layer of an ethylene cracking furnace tube. The invention realizes the above purpose through the following technical scheme: The utility model provides a thermal insulation layer construction equipment of ethylene pyrolysis furnace boiler tube staggered joint formula for at the fibrous felt of boiler tube surface staggered joint formula cladding a plurality of layers, including arc and No. two arc that tip articulated each other, arc and No. two arc keep away from its pin joint's one end all fixedly connected with mounting panel, the mounting panel is parallel with the axis of arc/No. two arc, be equipped with the locating part that is used for fixing fibrous felt's both ends on the mounting panel, the mounting panel is used for cladding fibrous felt on the boiler tube surface at arc and No. two arc rotation in-process; The construction device is also provided with a fixing mechanism for fixing the fiber mat. Preferably, the fixing mechanism comprises two fixing modules which are respectively arranged in the length direction of the mounting plates, and each fixing module comprises a fixing subunit which is respectively arranged at the corresponding positions of the two mounting plates; The fixed subunit comprises a semicircular cylinder track fixedly arranged on the mounting plate, a semicircular cylinder rotor rotationally arranged in the semicircular cylinder track, a driving motor fixedly arranged on the semicircular cylinder track, a gear fixedly arranged at the output shaft end of the driving motor and a switch arranged on the first arc plate/the second arc plate and used for controlling the driving motor; The semi-cylindrical rotor is provided with holes for penetrating through iron wires, the outer ring of the semi-cylindrical rotor is provided with a plurality of tooth grooves corresponding to gears, a complete cylinder rail is formed by two semi-cylindrical rails on the mounting plates, and the semi-cylindrical rotor on the mounting plates forms a complete cylinder and can rotate in the cylinder rail. Preferably, the limiting piece is in a conical structure. Preferably, the mounting plate is provided with a through hole, and the limiting piece is movably mounted at the through hole; The driving motor is further provided with a second output shaft, a screw is fixedly arranged on the second output shaft, a sleeve is movably sleeved on the outer ring of the screw, the sleeve is in threaded connection with the screw, the sleeve is fixedly connected with the limiting piece, and the driving motor drives the limiting piece to be separated from the fibrofelt when tightening the iron wire. Preferably, the first arc plate is rotatably provided with a pulley, and the first arc plate is movably provided with a connecting rope along the surface thereof; One end of the connecting rope is fixedly connected with a magnet, and the magnet is used for being adsorbed on an iron block of the second arc-shaped plate; the other end of the connecting rope is connected with a collis