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CN-122007546-A - Device and method for preparing sectional type coating on inner wall of medium-large furnace body

CN122007546ACN 122007546 ACN122007546 ACN 122007546ACN-122007546-A

Abstract

The invention belongs to the technical field of additive manufacturing and component surface strengthening, and particularly relates to equipment and a method for preparing a sectional coating on the inner wall of a medium-and-large-sized furnace body, wherein the equipment comprises a winch and a transmission mechanism for driving a working frame to axially lift and position in the furnace so as to realize a sectional working mode; the circumferential movement system drives the welding gun or the cladding head to be positioned along the circumferential direction of the annular frame accurately, the radial position adjusting mechanism is adapted to different furnace diameters to ensure that the distance between the gun head and the inner wall is constant, the lifting module drives the gun head to feed axially in the segmented area, and the swinging assembly enables the gun head to swing reciprocally to form a wide and uniform coating and reduce heat input. The equipment and the method realize accurate, efficient and full-coverage automatic preparation of the coating on the inner wall of the large structure through multi-degree-of-freedom cooperative control, and remarkably improve the operation adaptability, the coating quality and the operation safety.

Inventors

  • ZHANG PENG
  • WANG JINGLI
  • LI YUXIN
  • LEI ZHENGLONG

Assignees

  • 太原理工大学

Dates

Publication Date
20260512
Application Date
20260212

Claims (10)

  1. 1. The utility model provides a medium-and-large-scale furnace body inner wall sectional type coating preparation equipment which characterized in that includes: The annular operation frame (3) is arranged in the middle-large furnace body in a lifting manner through a lifting structure; A plurality of welding guns or welding heads (7) are arranged on the annular operation frame (3), and the welding guns or the welding heads (7) are connected with the annular operation frame (3) sequentially through a swinging assembly, a radial position adjusting mechanism (6), a lifting module (5) and a circumferential movement system (4); The swinging assembly is used for enabling the welding gun or the cladding head (7) to generate reciprocating swinging motion; the radial position adjusting mechanism (6) is used for adjusting the distance between the welding gun or the cladding head (7) and the inner wall of the furnace body; The lifting module (5) is used for adjusting the vertical height of the welding gun or the cladding head (7); the circumferential movement system (4) is used for moving the welding gun or the cladding head (7) along the circumferential direction of the annular working frame (3).
  2. 2. The sectional type coating preparation device for the inner wall of the medium and large furnace body according to claim 1, wherein the circumferential movement system (4) comprises a circumferential movement trolley (3-3), the circumferential movement trolley (3-3) is slidably arranged at the top of the annular operation frame (3), the top of the annular operation frame (3) is an inner gear ring, a gear is meshed with the top of the annular operation frame (3), the gear transmission is matched with an output shaft of a circumferential motor (3-1), and a fixed end of the circumferential motor (3-1) is fixedly connected to the circumferential movement trolley (3-3); the circumferential movement trolley (3-3) is fixedly connected with the fixed end of the lifting module (5).
  3. 3. The sectional coating preparation device for the inner wall of the medium and large furnace body according to claim 2, wherein the lifting module (5) comprises a vertical sliding rail which is fixed with the circumferential movement trolley (3-3); The lifting synchronous belt is characterized in that lifting sliding blocks (4-4) are in sliding fit on the vertical sliding rails, the lifting sliding blocks (4-4) are fixed on lifting synchronous belts (4-3), the lifting synchronous belts (4-3) are arranged on one side of the vertical sliding rails, synchronous wheels are meshed with two ends of the lifting synchronous belts (4-3) respectively, the two synchronous wheels are rotatably arranged on one side of the vertical sliding rails, the two synchronous wheels are symmetrically arranged, any synchronous wheel is in transmission fit with an output shaft of an axial motor (4-1), and a fixed end of the axial motor (4-1) is fixedly connected with the vertical sliding rails.
  4. 4. A sectional type coating preparation device for the inner wall of a medium-large furnace body according to claim 3, wherein the vertical sliding rail is fixedly connected with one end of a fixing plate (3-2) through a flange seat (4-2), and the other end of the fixing plate (3-2) is fixed with the circumferential movement trolley (3-3).
  5. 5. A large and medium furnace body inner wall sectional type coating preparation device according to claim 3, characterized in that the radial position adjusting mechanism (6) comprises a screw rod fixing plate (2-1) which is fixed with the lifting slide block (4-4); The screw rod fixing plate (2-1) is fixedly connected with a fixed end of a horizontal moving part, and a movable end of the horizontal moving part is connected with the welding gun or the cladding head (7).
  6. 6. The sectional type coating preparation device for the inner wall of the medium and large furnace body according to claim 5, wherein the horizontal moving part comprises a ball screw (2-2), the ball screw is rotatably arranged on the screw fixing plate (2-1), the ball screw (2-2) is in transmission fit with an output shaft of a radial motor (2-6), and a fixed end of the radial motor (2-6) is fixedly connected with the screw fixing plate (2-1); the ball screw (2-2) is meshed with a radial sliding block (2-3), and the radial sliding block (2-3) is in sliding fit with the screw fixing plate (2-1); The radial sliding block (2-3) is connected with the swinging component.
  7. 7. The device and the method for preparing the sectional type coating on the inner wall of the medium-large furnace body according to claim 6, wherein the swinging assembly comprises a rotating platform (2-4) and a swinging motor (2-5), the fixed end of the swinging motor (2-5) is fixed with the radial sliding block (2-3), and an output shaft of the swinging motor (2-5) is in transmission fit with the rotating platform (2-4).
  8. 8. The sectional type coating preparation device for the inner wall of the medium and large furnace body according to claim 1, wherein the lifting structure comprises a plurality of winches (1), one end of a cable is wound on each winch (1), and the other end of the cable is fixed with the top of the annular operation frame (3) through a transmission mechanism (2); the windlass (1) is circumferentially arranged on the outer side of the middle-large furnace body.
  9. 9. The sectional type coating preparation device for the inner wall of the medium and large furnace body, as claimed in claim 8, is characterized in that the transmission mechanism (2) is a pulley block, the pulley block is rotatably arranged at the top of the medium and large furnace body, and the cable is wound on the pulley block.
  10. 10. A method for using the sectional coating preparation equipment for the inner wall of a medium-large furnace body, which is characterized by comprising the following steps of: Dividing a plurality of operation sections along the height of the inner wall of the medium-large furnace body, dividing each operation section into a plurality of operation areas, and enabling each operation area to correspond to one welding gun or welding head (7); The annular operation frame (3) is moved to a designated operation section by using the lifting structure, and the welding guns or the cladding heads (7) are in one-to-one correspondence with the operation areas by the circumferential motion system (4); the radial position adjusting mechanism (6) is used for adjusting the distance between the welding gun or the cladding head (7) and the inner wall of the furnace body; And the lifting module (5) is used for enabling the welding gun or the welding head (7) to move in the corresponding working area, and the welding gun or the welding head (7) is matched with the swinging assembly to swing reciprocally to form a welding seam or a welding layer with a specified width.

Description

Device and method for preparing sectional type coating on inner wall of medium-large furnace body Technical Field The invention belongs to the technical field of additive manufacturing and component surface strengthening, and particularly relates to equipment and a method for preparing a sectional type coating on the inner wall of a medium-large furnace body. Background The medium-large furnace body, the tank body and the pipeline, such as chemical containers, pressure containers and the like, are core components of high-end equipment manufacturing industries such as energy, chemical industry, metallurgy and the like. The inner walls of the devices are extremely easy to fail and destroy under the severe working conditions of high temperature, high pressure, corrosion, abrasion and oxidation for a long time, and the production safety and the service life of the devices are seriously influenced. In order to repair and strengthen it, it is generally necessary to prepare a high performance protective coating on the inner wall. The surfacing and the laser cladding are the most widely applied surface engineering technology at present, and can effectively improve the service performance of the inner wall. However, existing inner wall coating preparation techniques and equipment have a number of limitations. First, the suitability of the device is generally poor. Because the diameter and the height specification of the medium-large furnace body are various, the prior equipment is often fixed in structure, is difficult to flexibly adjust to adapt to the operation requirements of the inner walls of the furnace bodies with different sizes, has low universality, and has high cost because special equipment is required to be customized for the furnace bodies with different specifications. Secondly, the degree of automation and the operation precision are not enough. The prior art relies on manual operation or semi-automatization equipment more, and welder or cladding head's circumference and axial positioning accuracy are poor, and the adjustment flexibility is low, is difficult to realize the quality requirement that the coating fully covers and thickness is even, and workman intensity of labour is big simultaneously, and the operational environment is abominable, has the potential safety hazard. Furthermore, it is difficult to achieve both of the working efficiency and the quality stability. The single gun operation efficiency is low, and the lack of effective control on key process parameters such as heat input easily causes problems such as crack generation, large deformation, high dilution rate and the like of the coating, and influences the performance of the coating. Finally, the existing equipment is often complicated in structure, is very inconvenient to disassemble, debug and maintain on site, and reduces the feasibility of on-site application of the technology. Therefore, the prior art lacks a solution for preparing the coating on the inner wall of the medium-large furnace body, which can achieve high adaptability, high-precision automation, high efficiency and high quality and is convenient for on-site deployment and maintenance. Disclosure of Invention The invention aims to provide equipment and a method for preparing a sectional type coating on the inner wall of a medium-large furnace body so as to solve the problems. In order to achieve the above object, the present invention provides the following solutions: A sectional coating preparation device for the inner wall of a medium-large furnace body comprises: The annular operation frame is arranged in the middle-large furnace body in a lifting manner through a lifting structure. The annular operation frame is provided with a plurality of welding guns or welding heads, and the welding guns or welding heads are connected with the annular operation frame sequentially through a swinging assembly, a radial position adjusting mechanism, a lifting module and a circumferential movement system. The swinging component is used for enabling the welding gun or the cladding head to generate reciprocating deflection movement. The radial position adjusting mechanism is used for adjusting the distance between the welding gun or the cladding head and the inner wall of the furnace body. The lifting module is used for adjusting the vertical height of the welding gun or the cladding head. The circumferential motion system is used for enabling the welding gun or the cladding head to move along the circumferential direction of the annular working frame. Optionally, the circumference motion system includes circumference motion dolly, circumference motion dolly slides and sets up the top of annular operation frame, the top of annular operation frame is the ring gear, the top meshing of annular operation frame has the gear, gear drive cooperation has the output shaft of circumference motor, circumference motor's stiff end rigid coupling is in on the circumference motion dolly. The ci