Corrugated furnace pipe forming device

Abstract

The utility model discloses a corrugated furnace pipe forming device, which relates to the technical field of boiler corrugated furnace pipe processing, and comprises chucks, a furnace pipe processing piece is arranged between the chucks, an intermediate frequency heating sleeve is sleeved on the outer side of the furnace pipe processing piece in the circumferential direction, and the intermediate frequency heating sleeve surrounds a spinning section of the furnace pipe processing piece. A jacking device is arranged on the side, corresponding to the opening of the medium-frequency heating sleeve, of the furnace pipe machined part and comprises a jacking wheel assembly, an auxiliary wheel assembly, a sliding frame, a fixing frame and a high-pressure oil cylinder. By arranging the medium-frequency heating sleeve, the jacking wheel assembly, the auxiliary wheel assembly and the sliding frame, the medium-frequency heating sleeve is used for uniformly heating the furnace pipe, the jacking wheel assembly is used for synchronously machining and forming wave nodes, the efficiency is high, the auxiliary wheel assembly is used for supporting the jacking wheel assembly in an auxiliary mode, and the sliding frame is used for supporting the jacking wheel assembly and the auxiliary wheel assembly; and the working stability and reliability of the top pressing wheel assembly are improved, so that neat and uniform shell rings are pressed.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler corrugated furnace liner processing, in particular to a corrugated furnace liner forming device. Background Art

[0002] The corrugated furnace is an important component of the oil-fired boiler. This component is directly exposed to the radiation of high-temperature flames and the erosion of high-temperature flue gas. The axial expansion and contraction of the corrugated furnace can reduce the thermal stress generated by the furnace itself, and also reduce the stress concentration caused by the elongation of the furnace at the connection between the furnace and the tube sheet.

[0003] Most of the existing corrugated furnace bladders are formed by spinning. The furnace bladder is heated while the top pressure wheel is fed to press the heating part. At this time, the furnace bladder is in a rotating state, so it is spun. During the spinning process, the length of the furnace bladder is relatively long, and the furnace bladder has more barrel sections that need to be spun. The efficiency of processing a single wave node one by one is low, and each wave node is processed one by one. Local heating is used at the spinning position. As the spinning proceeds, it is affected by the heating of the previous wave node, and the heating temperature of each wave node also changes. That is, the temperature of the processed furnace bladder presents a stepped temperature difference from one end to the other. When the top pressure wheel is pressed, the temperature of the furnace bladder presents a stepped temperature difference, which leads to inconsistent deformation of the barrel, affecting the thinning amount of the furnace bladder wall thickness, the waveform height and the waveform pitch. For this reason, we provide a corrugated furnace bladder forming device. Utility Model Content

[0004] The utility model aims to provide a corrugated furnace liner forming device, which solves the problem that when the corrugated furnace liner is formed by spinning, the successive processing efficiency of a single wave node is low, and as the spinning proceeds, the heating temperature of each wave node also changes, affecting the temperature uniformity during the processing of the corrugated furnace liner.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrugated furnace bladder forming device, comprising a chuck, a furnace bladder processing piece is installed between the chucks, a medium-frequency heating sleeve is provided in the circumferential sleeve on the outer side of the furnace bladder processing piece, the medium-frequency heating sleeve surrounds the spinning section of the furnace bladder processing piece, and a top pressing device is provided on the side of the furnace bladder processing piece corresponding to the opening of the medium-frequency heating sleeve, the top pressing device comprises a top pressing wheel assembly, an auxiliary wheel assembly, a sliding frame, a fixed frame and a high-pressure oil cylinder, the top pressing wheel assembly is rotatably connected between the sliding frames through a rotating shaft, the top pressing wheels of the top pressing wheel assembly are distributed on the rotating shaft along the tangential spacing of the furnace bladder processing piece, the auxiliary wheel assembly is fixedly connected between the sliding frames through a fixed shaft, the auxiliary wheels of the auxiliary wheel assembly are rotatably connected on the fixed shaft along the tangential spacing of the rotating shaft, the high-pressure oil cylinder is installed on the top of the fixed frame, the sliding frame is fixedly connected to the output end of the high-pressure oil cylinder, and the high-pressure oil cylinder drives the top pressing wheel to press on the surface of the furnace bladder processing piece through the sliding frame to feed.

[0006] Preferably, the auxiliary wheels are distributed between adjacent pressing wheels.

[0007] Preferably, the sliding frame is slidably arranged on a track of the fixed frame.

[0008] Preferably, a laser rangefinder is installed on the top of the sliding frame.

[0009] The utility model has the following beneficial effects:

[0010] The utility model arranges a medium frequency heating sleeve, a top pressing wheel assembly, an auxiliary wheel assembly and a sliding frame, and utilizes the medium frequency heating sleeve to surround and heat the spinning section of the furnace core workpiece. The overall synchronous heating ensures uniform heating, and utilizes the top pressing wheel of the top pressing wheel assembly to top press the heated part. The synchronous processing and forming efficiency of each wave node is high. The auxiliary wheel assembly is used to assist in supporting the top pressing wheel assembly to prevent the top pressing wheel assembly from deforming during long-term top pressing work and affecting the furnace core forming quality. The sliding frame is used to support the top pressing wheel assembly and the auxiliary wheel assembly, so as to improve the working stability and reliability of the top pressing wheel assembly, thereby pressing out neat and uniform cylinder sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a state diagram of the utility model when the top pressure device is pressing the furnace liner processing part;

[0013] Figure 3 It is a schematic diagram of the structure of the top pressure device of the utility model.

[0014] In the figure: 1. chuck; 2. furnace processing part; 3. medium frequency heating sleeve; 4. top pressure device; 41. top pressure wheel assembly; 411. rotating shaft; 412. top pressure wheel; 42. auxiliary wheel assembly; 421. fixed shaft; 422. auxiliary wheel; 43. sliding frame; 44. fixed frame; 441. track; 45. high pressure cylinder; 5. laser rangefinder. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1-3As shown, the utility model provides a technical solution: a corrugated furnace forming device, including a chuck 1, a furnace processing piece 2 is installed between the chucks 1, a medium frequency heating sleeve 3 is circumferentially sleeved on the outer side of the furnace processing piece 2, and the medium frequency heating sleeve 3 surrounds the spinning section of the furnace processing piece 2, and the overall synchronous heating ensures uniform heating. A top pressing device 4 is arranged on one side of the furnace processing piece 2 corresponding to the opening of the medium frequency heating sleeve 3, and the top pressing device 4 includes a top pressing wheel assembly 41, an auxiliary wheel assembly 42, a sliding frame 43, a fixed frame 44 and a high-pressure cylinder 45, and the top pressing wheel assembly 4 1 is rotatably connected between the sliding frames 43 through the rotating shaft 411, the top pressing wheel assembly 41 rotates under the force of the furnace workpiece 2, and the top pressing wheels 412 of the top pressing wheel assembly 41 are distributed along the tangential spacing of the furnace workpiece 2 and fixed on the rotating shaft 411. The top pressing wheels 412 are distributed at various wave node positions to press the heating part, and each wave node is synchronously processed and formed with high efficiency. The auxiliary wheel assembly 42 is fixedly connected between the sliding frames 43 through the fixed shaft 421, and the auxiliary wheels 422 of the auxiliary wheel assembly 42 are distributed along the tangential spacing of the rotating shaft 411 and fixed on the fixed shaft 4 21 is rotatably connected, and the auxiliary wheel 422 is distributed in the middle of the adjacent top pressing wheel 412. The auxiliary wheel 422 rotates under the force of the rotating shaft 411, and the auxiliary wheel 422 is used to auxiliary support the top pressing wheel assembly 41 to prevent the top pressing wheel assembly 41 from deforming due to long-term top pressing work and affecting the furnace forming quality. The high-pressure cylinder 45 is installed on the top of the fixed frame 44, and the sliding frame 43 is fixedly connected to the output end of the high-pressure cylinder 45. The high-pressure cylinder 45 drives the top pressing wheel 412 to press on the surface of the furnace workpiece 2 through the sliding frame 43 to feed, and the sliding frame 43 slides It is arranged on the track 441 of the fixed frame 44, and the sliding frame 43 is used to support the top pressure wheel assembly 41 and the auxiliary wheel assembly 42, so as to improve the stability and reliability of the top pressure wheel assembly 41. The laser rangefinder 5 is installed on the top of the sliding frame 43. Through the top pressure wheel assembly 41, the sliding frame 43, the high-pressure oil cylinder 45 and the laser rangefinder 5, the equipment can measure the lateral distance between the top pressure wheel assembly 41 and the furnace liner processing part 2, and can control the high-pressure oil cylinder 45 to adjust the distance according to the processing size of the corrugated furnace liner, so as to ensure the processing quality of the corrugated furnace liner;

[0017] When in use, start the medium frequency heating sleeve 3 and the high pressure cylinder 45, rotate the furnace core workpiece 2 on the spinning machine, use the medium frequency heating sleeve 3 to heat the furnace core workpiece 2 while feeding the top pressing wheel 412, the high pressure cylinder 45 drives the top pressing wheel 412 to contact the surface of the furnace core workpiece 2 and feed slowly, and the furnace core workpiece 2 rotates, and is heated while spinning. The curved surface shape of the top pressing wheel 412 forces the heated part of the furnace core workpiece 2 to be spun into a corresponding curved surface until the waveform reaches a predetermined depth shape.

[0018] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrugated furnace liner forming device, comprising a chuck (1), a furnace liner processing part (2) being installed between the chucks (1), characterized in that: The outer circumferential sleeve of the furnace core processing part (2) is provided with a medium frequency heating sleeve (3), the medium frequency heating sleeve (3) surrounds the spinning section of the furnace core processing part (2), and a top pressing device (4) is provided on the side of the furnace core processing part (2) corresponding to the opening of the medium frequency heating sleeve (3), the top pressing device (4) comprises a top pressing wheel assembly (41), an auxiliary wheel assembly (42), a sliding frame (43), a fixed frame (44) and a high-pressure oil cylinder (45), the top pressing wheel assembly (41) is rotatably connected between the sliding frames (43) via a rotating shaft (411), and the top pressing wheel (412) of the top pressing wheel assembly (41) is rotated along the furnace core processing part (2). The workpiece (2) is fixed on the rotating shaft (411) at a tangential spacing, the auxiliary wheel assembly (42) is fixedly connected between the sliding frames (43) via a fixed shaft (421), the auxiliary wheels (422) of the auxiliary wheel assembly (42) are rotatably connected on the fixed shaft (421) along the tangential spacing of the rotating shaft (411), the high-pressure oil cylinder (45) is installed on the top of the fixed frame (44), the sliding frame (43) is fixedly connected to the output end of the high-pressure oil cylinder (45), and the high-pressure oil cylinder (45) drives the pressing wheel (412) to press on the surface of the furnace workpiece (2) through the sliding frame (43) to feed.

2. A corrugated furnace liner forming device according to claim 1, characterized in that: The auxiliary wheels (422) are distributed between adjacent pressing wheels (412).

3. The corrugated furnace liner forming device according to claim 1, characterized in that: The sliding frame (43) is slidably arranged on a track (441) of the fixed frame (44).

4. The corrugated furnace liner forming device according to claim 1, characterized in that: A laser rangefinder (5) is installed on the top of the sliding frame (43).

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