A heat treatment apparatus and process for weld joints in a hot-wall hydrogenation reactor

Abstract

This invention relates to the field of heat treatment equipment technology, specifically to a heat treatment device and process for weld joints in a hot-wall hydrogenation reactor. The heat treatment device for weld joints in a hot-wall hydrogenation reactor includes a base, a main spray gun, multiple first spray guns, and multiple second spray guns. The main spray gun is connected to two first spray guns via a first transmission unit. Adjacent first and second spray guns are connected via a second transmission unit. This heat treatment device for weld joints in a hot-wall hydrogenation reactor, by activating the first transmission unit to drive the connected first spray guns to revolve around the main spray gun while simultaneously rotating on their own axes, changes the angle between them. Activating the second transmission unit changes the angle between the first / second spray gun located at the rear and the adjacent / first spray gun located in front of it. This allows for separate treatment of longitudinal and circumferential seams on the cylinder section, adapting to different heat treatment requirements after the cylinder section welding is completed.

Description

Technical Field

[0001] This invention relates to the field of heat treatment equipment technology, specifically to a heat treatment device and process for weld joints in a hot-wall hydrogenation reactor. Background Technology

[0002] Hot-wall hydrotreating reactors are key equipment in petroleum refining, undertaking important process steps such as heavy oil hydrocracking and residue hydrotreating. These reactors operate under conditions of 10–25 MPa high pressure, 400–480℃ high temperature, and exposure to hydrogen and hydrogen sulfide. To prevent severe damage such as hydrogen embrittlement, hydrogen corrosion, sulfide corrosion, tempering embrittlement of Cr-Mo steel, and peeling of the weld overlay, the hydrotreating reactors have high design requirements and complex, challenging manufacturing processes, demanding high standards in materials, welding technology, and welding quality.

[0003] In manufacturing a hydrogenation reactor, steel plates are heated and rolled into a cylindrical shape, and the longitudinal seams (straight welds) of the cylindrical sections are welded. Furthermore, multiple cylindrical sections need to be welded together, forming circumferential seams (ring welds) to increase the total length of the cylindrical sections. To match the properties of the base material, the welding materials (electrodes, wires) used during welding need to be similar in chemical composition and mechanical properties to the base material, typically Cr-Mo alloy system welding materials. However, the weld seam, as the weakest point in the entire cylindrical section, is more susceptible to corrosion and damage. To improve the weld seam strength, flux-cored welding wire or strip welding of super austenitic corrosion-resistant stainless steel can be used directly for surfacing, optimizing the cylindrical section's resistance to general and localized corrosion.

[0004] After the circumferential and longitudinal seams of the cylinder section are welded, hydrogen removal heat treatment is required. The main purpose of hydrogen removal treatment is to allow diffusible hydrogen in the weld metal to escape rapidly, reduce the hydrogen content in the weld and heat-affected zone, prevent cracking, and further improve the quality of the cylinder section. Traditional hydrogen removal heat treatment mainly uses flame heating and relies on manual operation. Operators hold a flame torch to heat the weld area, which is not only inefficient and cannot meet the needs of large-scale production, but also prone to uneven temperature distribution due to differences in human operation. Excessive temperature in some areas may damage the material structure, while insufficient temperature will not achieve the desired hydrogen removal effect, seriously affecting the stability of heat treatment quality.

[0005] To improve processing efficiency, heat treatment equipment is commonly used to remove hydrogen from weld joints. However, these devices can generally only treat one type of weld, either circumferential or longitudinal. During production, two heat treatment units are required: one for longitudinal welds and the other for circumferential welds. This configuration significantly increases the equipment footprint and costs, and it cannot meet the heat treatment requirements for both straight and circular welds after cylindrical section welding. Summary of the Invention

[0006] This invention provides a heat treatment device and process for weld joints in a hot-wall hydrogenation reactor, to solve the problem that existing heat treatment devices cannot meet the heat treatment requirements for straight welds and circular welds after cylindrical section welding.

[0007] The present invention provides a weld joint heat treatment device for a hot-wall hydrogenation reactor, which adopts the following technical solution: A weld joint heat treatment device for a hot-wall hydrogenation reactor, used for heat treatment of a cylindrical section, includes a base, a main spray gun, a first heating group, and a second heating group; the cylindrical section is placed on the base, and the axial direction of the cylindrical section is referred to as the first direction, which is the horizontal direction; the main spray gun is rotatably mounted on the base around the vertical direction; the first heating group and the second heating group are symmetrically arranged about the central axis of the main spray gun in the vertical direction; both the first heating group and the second heating group include multiple first spray guns and multiple second spray guns, which are initially arranged sequentially in the first direction, and the first spray guns and second spray guns are alternately distributed in the first direction; the main spray gun, the first spray gun, and the second spray gun... Each gun has a nozzle, which is positioned facing one side of the cylinder section. The main spray gun is arranged adjacent to one of the first spray guns in the first heating group and one of the first spray guns in the second heating group, and is connected to the two first spray guns through a first transmission part. The first transmission part can drive the first spray gun connected to it to revolve around the main spray gun while rotating on its own axis. The adjacent first spray gun and second spray gun are connected through a second transmission part, which can make the first spray gun / second spray gun revolve around the second spray gun / first spray gun in front of it while rotating on its own axis, and make multiple first spray guns and multiple second spray guns surround the circumferential direction of the cylinder section, and make the nozzles on the first spray gun and the nozzles on the second spray gun both point to the center of the cylinder section. The side closer to the main spray gun in the first direction is called the front, and the side farther away from the main spray gun is called the rear.

[0008] Further, the first transmission unit includes a first transmission group; the first transmission group includes a rack, two main gear plates, two first main rods, and two first mating rods; the main spray gun is mounted on the base via a mounting seat, and the mounting seat can rotate relative to the base in a vertical direction; both main gear plates are fixedly mounted on the mounting seat, and the main gear plates are sector-shaped plates; each first spray gun is coaxially and fixedly provided with a first rotating gear, and the first rotating gears on the two first spray guns adjacent to the main spray gun are correspondingly provided with the two main gear plates, and the first rotating gears mesh with their corresponding main gear plates; the two first mating rods are respectively connected to the first spray guns of the first heating group and the first spray guns of the second heating group adjacent to the main spray gun; the rack is mounted on the mounting seat in a vertical direction and can move up and down; two first gears are rotatably provided on the mounting seat, and the rack is located between the two first gears and meshes with the two first gears; the first gears, the first main rods, and the first mating rods are correspondingly provided, and the first main rods connect to their corresponding first gears and first mating rods.

[0009] Furthermore, the second transmission unit includes two second transmission groups, each including a first toothed plate, a second toothed plate, a first transmission member, and a second transmission member. The first toothed plate is coaxially and fixedly mounted on the first spray gun, and the second toothed plate is coaxially and fixedly mounted on the second spray gun. Each second spray gun has a second rotating gear coaxially and fixedly mounted on it. The first toothed plate on the first spray gun meshes with the second rotating gear on the second spray gun located behind it, and the second toothed plate on the second spray gun meshes with the first rotating gear on the first spray gun located behind it. The first transmission member connects any first spray gun and the second spray gun located behind it, and the first transmission member enables the second spray gun to revolve relative to the first spray gun in front of it. The second transmission member connects any second spray gun and the first spray gun located behind it, and the second transmission member enables the first spray gun to revolve relative to the second spray gun in front of it.

[0010] Further, the first transmission component includes a second main rod, a second mating rod, and a first transmission belt; the second main rod is rotatably mounted on the first spray gun, and the second mating rod is rotatably mounted on the second spray gun; the second main rod and the second mating rod are connected; and a first transmission wheel is coaxially and fixedly mounted on the second main rod, and a second transmission wheel is coaxially and rotatably mounted on the second mating rod, with the first transmission belt sequentially wound around the first and second transmission wheels; the second transmission component includes a third main rod, a third mating rod, and a second transmission belt; the third main rod is coaxially and fixedly connected to the second transmission wheel, and the third mating rod is rotatably mounted on the first spray gun located behind any of the second spray guns; the third main rod and the third mating rod are connected; and a third transmission wheel is coaxially and fixedly mounted on the third main rod, and a fourth transmission wheel is coaxially and fixedly mounted on the first transmission wheel, with the second transmission belt sequentially wound around the third and fourth transmission wheels.

[0011] Furthermore, the first main rod and the first mating rod, the second main rod and the second mating rod, and the third main rod and the third mating rod are all connected by pins.

[0012] Furthermore, the weld heat treatment device for the hot-wall hydrogenation reactor also includes a gas pipe, which is a corrugated pipe; the gas pipe is provided with multiple first branches and multiple second branches, the first branches are configured one-to-one with the first spray guns, the second branches are configured one-to-one with the second spray guns, the first branches are connected to the first spray guns they are configured with, and the second branches are connected to the second spray guns they are configured with.

[0013] Furthermore, each of the first and second branch pipes is equipped with an air valve.

[0014] Furthermore, the cylindrical section is mounted on the base in a manner that allows it to move along its axial direction and rotate about its own axis.

[0015] Furthermore, the mounting base is mounted on the base via a first motor, which drives the mounting base to rotate in the vertical direction.

[0016] The present invention also provides a process for a heat treatment device for weld joints of a hot-wall hydrogenation reactor. The heat treatment device for weld joints of the hot-wall hydrogenation reactor includes the following steps: S10, rotating the main spray gun 90° around the vertical direction. S20, causing the first spray gun of the first heating group connected to the main spray gun and the first spray gun of the second heating group to revolve around the main spray gun while rotating on their own axis; S30, causing the first spray gun / second spray gun to revolve around the second spray gun / first spray gun in front of it while rotating on its own axis.

[0017] The beneficial effects of this invention are as follows: The weld joint heat treatment device for a hot-wall hydrogenation reactor of this invention comprises a base, a main spray gun, a first heating group, and a second heating group. By activating a first transmission unit, the first spray gun connected to it revolves around the main spray gun while simultaneously rotating on its own axis, changing the angle between the main spray gun and the first spray gun. Activating a second transmission unit changes the angle between the first / second spray gun located at the rear and the second / first spray gun located adjacent to and in front of it, ultimately changing the shape formed by multiple first and second spray guns. This allows the weld joint heat treatment device for the hot-wall hydrogenation reactor to treat straight welds and annular welds separately. Furthermore, by combining the rotation of the first and second spray guns to change the orientation of their nozzles, the nozzles can be evenly distributed, adapting to different heat treatment requirements after the cylinder section welding is completed, thus reducing production costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a state diagram of a pair of longitudinal seams during heat treatment, according to an embodiment of a weld joint heat treatment device for a hot-wall hydrogenation reactor of the present invention. Figure 2 This is a state diagram of a pair of circumferential seams during heat treatment, according to an embodiment of a weld joint heat treatment device for a hot-wall hydrogenation reactor of the present invention. Figure 3 This is a schematic diagram of the main spray gun, the first heating group, and the second heating group in Embodiment 1 of a heat treatment device for weld joints of a hot-wall hydrogenation reactor according to the present invention. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the main spray gun, the first heating group, and the second heating group in Embodiment 1 of a heat treatment device for weld joints of a hot-wall hydrogenation reactor according to the present invention. Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of a portion of the main spray gun, the first heating group, and the second heating group in a first embodiment of a heat treatment device for weld joints of a hot-wall hydrogenation reactor according to the present invention. Figure 8 This is a schematic diagram of a portion of the structure of the first transmission unit in an embodiment of a heat treatment device for weld joints of a hot-wall hydrogenation reactor according to the present invention. Figure 9 This is a schematic diagram of the second spray gun and its connecting structure in Embodiment 1 of a heat treatment device for weld joints of a hot-wall hydrogenation reactor according to the present invention. Figure 10 This is a schematic diagram of a portion of the structure of the second transmission unit in an embodiment of a heat treatment device for weld joints of a hot-wall hydrogenation reactor according to the present invention. Figure 11 This is a schematic diagram of the axial adjustment component and the circumferential adjustment component of a weld joint heat treatment device for a hot-wall hydrogenation reactor according to Embodiment 1 of the present invention. Figure 12 This is a schematic diagram of a first embodiment of a heat treatment device for weld joints in a hot-wall hydrogenation reactor according to the present invention. Figure 13 This is a schematic diagram of a portion of the second transmission unit in Embodiment 2 of a heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to the present invention.

[0020] In the diagram: 100, cylinder section; 200, base; 210, mounting seat; 211, first gear; 220, first motor; 230, first drive component; 240, axial adjustment component; 241, first adjustment seat; 242, first adjustment roller; 243, third motor; 250, circumferential adjustment component; 251, second adjustment seat; 252, second adjustment roller; 253, fourth motor; 300, main spray gun; 301, first gun; 302, second gun; 303, third gun; 304, fourth gun; 400, first heating group; 450, air pipe; 451, first branch pipe; 452, second branch pipe; 453, air valve; 500, second heating group; 600, first spray gun; 610, first rotating gear; 700, second spray gun; 710, the... Two rotating gears; 800, first transmission unit; 810, rack and pinion; 820, main gear plate; 830, first main rod; 840, first mating rod; 841, second motor; 842, drive gear; 900, second transmission unit; 910, first gear plate; 920, second gear plate; 930, first transmission component; 931, second main rod; 932, second mating rod; 933, first transmission belt; 934, first transmission wheel; 935, second transmission wheel; 940, second transmission component; 941, third main rod; 942, third mating rod; 943, second transmission belt; 944, third transmission wheel; 945, fourth transmission wheel; 950, pin; 960, first connecting rod; 970, second connecting rod; 980, connecting groove; 990, connecting block. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1:

[0023] An embodiment of the weld joint heat treatment apparatus for a hot-wall hydrogenation reactor of the present invention, such as... Figures 1 to 12 As shown.

[0024] A heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor is disclosed for heat treating a cylindrical section 100. The apparatus includes a base 200, a main spray gun 300, a first heating group 400, and a second heating group 500. The cylindrical section 100 is placed on the base 200, and the axial direction of the cylindrical section 100 is referred to as the first direction, which is horizontal. The main spray gun 300 is rotatably mounted on the base 200 about a vertical direction. The first heating group 400 and the second heating group 500 are symmetrically arranged about the central axis of the main spray gun 300 in the vertical direction. Both the first heating group 400 and the second heating group 500 include multiple first spray guns 600 and multiple second spray guns 700. Initially, the multiple first spray guns 600 and multiple second spray guns 700 are sequentially arranged in the first direction, and the first spray guns 600 and second spray guns 700 are alternately distributed in the first direction. The main spray gun 300, the first spray gun 600, and the second spray gun 700 are all equipped with nozzles, which are positioned facing the cylinder section 100.

[0025] The main spray gun 300 is arranged adjacent to one of the first spray guns 600 in the first heating group 400 and one of the first spray guns 600 in the second heating group 500, and is connected to the two first spray guns 600 through a first transmission unit 800. The first transmission unit 800 can drive the first spray gun 600 connected to it to revolve around the main spray gun 300 while rotating on its own axis. The adjacent first spray guns 600 and second spray guns 700 are connected through a second transmission unit 900. The second transmission unit 900 can cause the first spray gun 600 / second spray gun 700 to revolve around the second spray gun 700 / first spray gun 600 in front of it while rotating on its own axis, and can cause the multiple first spray guns 600 and multiple second spray guns 700 to surround the cylindrical section 100 in the circumferential direction, and the nozzles on the first spray guns 600 and the second spray guns 700 to point to the center of the cylindrical section 100. The direction closer to the main spray gun 300 in the first direction is called the front, and the direction farther away from the main spray gun 300 is called the rear.

[0026] In this embodiment, by setting up a base 200, a main spray gun 300, a first heating group 400, and a second heating group 500 in coordination, when heat-treating the longitudinal seam on the cylindrical section 100, it is only necessary to place the cylindrical section 100 on the base 200, align the nozzles of the main spray gun 300, the first spray gun 600, and the second spray gun 700 with the longitudinal seam, and then perform heat treatment on the longitudinal seam. See also... Figure 1 As shown.

[0027] When heat treatment is required on the annular seam, first rotate the main spray gun 300 90° around the vertical direction until it is perpendicular to the first direction. Then, activate the first transmission unit 800 and the second transmission unit 900. Activation of the first transmission unit 800 will drive the first spray gun 600 connected to it to revolve around the main spray gun 300 while simultaneously rotating on its own axis, changing the angle between the main spray gun 300 and the first spray gun 600, so that the main spray gun 300 and the first spray gun 600 are no longer collinear. Furthermore, the revolving of the first spray gun 600 around the main spray gun 300 will drive multiple second spray guns 700 and multiple first spray guns 600 located behind it to revolve. Similarly, activation of the second transmission unit 900 will cause the first spray gun 600 / second spray gun 700 to rotate relative to the main spray gun 300. The second spray gun 700 / first spray gun 600 on its front side revolves around the sun while rotating on its own axis, thereby changing the angle between the first spray gun 600 / second spray gun 700 located on the rear side and the second spray gun 700 / first spray gun 600 located adjacent to it and on its front side. The rotation of the first spray gun 600 and second spray gun 700 will change the orientation of their nozzles, ultimately allowing the multiple first spray guns 600 and multiple second spray guns 700 to surround the circumference of the cylindrical section 100 after rotation, and the nozzles on the first spray gun 600 and the nozzles on the second spray gun 700 both point to the center of the cylindrical section 100, thereby switching the weld joint heat treatment device of the hot wall hydrogenation reactor to heat treat the annular seam. See [link to relevant documentation]. Figure 2 As shown.

[0028] See Figure 12As shown, the illustration uses multiple first spray guns 600 and multiple second spray guns 700 in the main spray gun 300 and the first heating group 400 as examples. Line I in the figure represents the initial distribution of the first heating group 400. At this time, the multiple first spray guns 600 and multiple second spray guns 700 in the first heating group 400 are all arranged along the first direction and are alternately distributed in the first direction, which can be used for heat treatment of longitudinal seams. The first spray gun 600 adjacent to the main spray gun 300 is called the first gun 301. Line II represents the distribution of the first gun 301 and the other first spray guns 600 and second spray guns 700 located behind it after the first gun 301 revolves around the main spray gun 300. The second spray gun 700 located behind and adjacent to the first gun 301 is called the second gun 302. Line III represents the distribution of the second gun 302 and the other first spray guns 600 and second spray guns 700 located behind it after the second gun 302 revolves relative to the first gun 301. The first spray gun 600 located behind and adjacent to the second spray gun 302 is referred to as the third spray gun 303. Line IV represents the distribution of the third spray gun 303 and the other first spray guns 600 and second spray guns 700 located behind it after the third spray gun 303 has revolved relative to the second spray gun 302. The second spray gun 700 located behind and adjacent to the third spray gun 303 is referred to as the fourth spray gun 304. Line V represents the distribution of the third spray gun 303 and the other first spray guns 600 and second spray guns 700 located behind it after the fourth spray gun 304 has revolved relative to the third spray gun 303. That is, for the first heating group 400, by changing the included angle between the first spray gun 600 / second spray gun 700 located at the rear and the second spray gun 700 / first spray gun 600 located adjacent to it and at the front, the shape formed by the multiple first spray guns 600 and second spray guns 700 is changed, enabling the weld heat treatment device of the hot wall hydrogenation reactor to treat straight welds and annular welds separately. Based on this, by combining the rotation of the first spray gun 600 and second spray gun 700 to change the orientation of their nozzles, the nozzles can be evenly distributed, adapting to different heat treatment requirements after the welding of the cylinder section 100, thus reducing production costs.

[0029] In a further embodiment, the first transmission unit 800 includes a first transmission group. The first transmission group includes a rack and pinion 810, two main gear plates 820, two first main rods 830, and two first mating rods 840. The main spray gun 300 is mounted on the base 200 via a mounting base 210, which is rotatable relative to the base 200 in a vertical direction. Both main gear plates 820 are fixedly mounted on the mounting base 210, and the main gear plates 820 are sector-shaped plates. Each first spray gun 600 is coaxially and fixedly provided with a first rotating gear 610, and the first rotating gears 610 on the two first spray guns 600 adjacent to the main spray gun 300 are correspondingly provided with the two main gear plates 820, and the first rotating gears 610 mesh with their corresponding main gear plates 820. The two first mating rods 840 are respectively connected to the first spray guns 600 of the first heating group 400 and the first spray guns 600 of the second heating group 500, which are adjacent to the main spray gun 300. The rack and pinion 810 is vertically mounted on the mounting base 210 and is movable up and down. Two first gears 211 are rotatably mounted on the mounting base 210, and the rack and pinion 810 is located between and meshes with the two first gears 211. The first gears 211, the first main rod 830, and the first mating rod 840 are arranged in a one-to-one correspondence, with the first main rod 830 connecting to its corresponding first gear 211 and first mating rod 840.

[0030] The mounting base 210 is mounted on the base 200 via a first motor 220, which drives the mounting base 210 to rotate in the vertical direction.

[0031] The rack and pinion 810 is mounted on the mounting base 210 via a first driving member 230, which enables the rack and pinion 810 to move up and down. The first driving member 230 is a hydraulic telescopic cylinder.

[0032] Furthermore, two first transmission groups are provided, located on either side of the main spray gun 300 in a second direction, which is horizontal and perpendicular to the first direction. By providing two first transmission groups, the stability of the transmission is improved.

[0033] In use, the hydraulic telescopic cylinder is activated to drive the rack and pinion 810 to move up and down. This movement of the rack and pinion 810 causes the two meshing first gears 211 to rotate. Taking one of the first gears 211 as an example, the rotation of the first gear 211 drives the first mating rod 840 connected to it to rotate via the first main rod 830. The rotation of the first mating rod 840 causes the first spray gun 600 of the first heating group 400 or the first spray gun 600 of the second heating group 500 connected to it to swing, that is, to cause the first spray gun 600 of the first heating group 400 and the first spray gun 600 of the second heating group 500, which are adjacent to the main spray gun 300, to revolve around the main spray gun 300. During this revolution, the first rotating gear 610 meshes with its corresponding main gear plate 820, thereby causing the first spray gun 600 of the first heating group 400 and the first spray gun 600 of the second heating group 500, which are adjacent to the main spray gun 300, to rotate on their own axes while revolving around the main spray gun 300. Based on this, by setting the rotation angle of the first rotating gear 610 relative to the main gear plate 820, the first rotating gear 610 after rotation drives the nozzle of the first spray gun 600 toward the center of the cylinder section 100.

[0034] In a further embodiment, the second transmission unit 900 includes two second transmission groups, each including a first toothed plate 910, a second toothed plate 920, a first transmission member 930, and a second transmission member 940. The first toothed plate 910 is coaxially and fixedly mounted on the first spray gun 600, and the second toothed plate 920 is coaxially and fixedly mounted on the second spray gun 700. Each second spray gun 700 is coaxially and fixedly mounted with a second rotating gear 710. The first toothed plate 910 on the first spray gun 600 meshes with the second rotating gear 710 on the second spray gun 700 located behind it, and the second toothed plate 920 on the second spray gun 700 meshes with the first rotating gear 610 on the first spray gun 600 located behind it. A first transmission member 930 connects any first spray gun 600 and a second spray gun 700 located behind the first spray gun 600. The first transmission member 930 enables the second spray gun 700 to revolve relative to the first spray gun 600 in front of it. A second transmission member 940 connects any second spray gun 700 and a first spray gun 600 located behind the second spray gun 700. The second transmission member 940 enables the first spray gun 600 to revolve relative to the second spray gun 700 in front of it.

[0035] The first transmission component 930 includes a second main rod 931, a second mating rod 932, and a first transmission belt 933. The second main rod 931 is rotatably mounted on the first spray gun 600, and the second mating rod 932 is rotatably mounted on the second spray gun 700, used to drive the second spray gun 700 to swing. The second main rod 931 and the second mating rod 932 are connected. A first transmission wheel 934 is coaxially and fixedly mounted on the second main rod 931, and a second transmission wheel 935 is coaxially and rotatably mounted on the second mating rod 932. The first transmission belt 933 is sequentially wound around the first transmission wheel 934 and the second transmission wheel 935. The second transmission component 940 includes a third main rod 941, a third mating rod 942, and a second transmission belt 943. The third main rod 941 is coaxially and fixedly connected to the second transmission wheel 935, and the third mating rod 942 is rotatably mounted on the first spray gun 600 located behind any of the second spray guns 700, used to drive the first spray gun 600 to swing. The third main rod 941 and the third mating rod 942 are connected. The third main rod 941 is coaxially and fixedly mounted with a third transmission wheel 944, and the first transmission wheel 934 is coaxially and fixedly mounted with a fourth transmission wheel 945. The second transmission belt 943 is sequentially wound around the third transmission wheel 944 and the fourth transmission wheel 945.

[0036] Furthermore, each of the two first mating rods 840 is connected to a drive gear 842 via a second motor 841. Each of the two first spray guns 600, adjacent to the main spray gun 300, is rotatably equipped with a driven gear. The driven gear is coaxially mounted and fixedly connected to the second main rod 931. The drive gear 842 and the driven gear are arranged in a one-to-one correspondence, and the drive gear 842 can drive the corresponding driven gear to rotate.

[0037] Furthermore, two second transmission groups are provided, located on opposite sides of the main spray gun 300 in the second direction. The use of two second transmission groups improves transmission stability.

[0038] Simultaneously with the activation of the hydraulic telescopic cylinder, the second motor 841 is also activated. The activation of the second motor 841 drives the drive gear 842 to rotate. Taking the first heating group 400 as an example, the rotation of the drive gear 842 drives the driven gear to rotate, which in turn drives the second main rod 931 and the first transmission wheel 934 to rotate. The rotation of the second main rod 931 drives the second mating rod 932 to rotate, which in turn drives the second spray gun 700 to swing, i.e., to revolve relative to the first spray gun 600 in front of it. During this revolution, the second rotating gear 710 on the second spray gun 700 meshes with the first toothed plate 910 in front of it and rotates relative to the first toothed plate 910. By setting the rotation angle of the second rotating gear 710 relative to the first toothed plate 910, the rotated second rotating gear 710 drives the nozzle of the second spray gun 700 towards the center of the cylinder section 100. Furthermore, the first transmission wheel 934 drives the second transmission wheel 935 to rotate via the first transmission belt 933. The rotation of the second transmission wheel 935 drives the third main rod 941 and the second transmission wheel 935 to rotate. The rotation of the third main rod 941 drives the third mating rod 942 to rotate, and through the third mating rod 942, drives the first spray gun 600 located behind the second spray gun 700 to swing, that is, to make the first spray gun 600 revolve relative to the second spray gun 700 in front of it. During the revolution, the first rotating gear 610 on the first spray gun 600 will mesh with the second toothed plate 920 in front of it and rotate relative to the second toothed plate 920. By setting the rotation angle of the first rotating gear 610 relative to the second toothed plate 920, the first rotating gear 610 after rotation drives the nozzle of the first spray gun 600 to face the center of the cylinder section 100. Furthermore, the third transmission wheel 944 will drive the fourth transmission wheel 945 to rotate via the second transmission belt 943. The rotation of the fourth transmission wheel 945 will drive the second main rod 931 and the first transmission wheel 934 on the other first spray gun 600 connected to it to rotate, and so on, changing the included angle between the first spray gun 600 / second spray gun 700 located at the rear and the second spray gun 700 / first spray gun 600 located adjacent to it and in front of it, thereby changing the shape formed by the multiple first spray guns 600 and second spray guns 700.

[0039] In a further embodiment, the first main rod 830 and the first mating rod 840, the second main rod 931 and the second mating rod 932, and the third main rod 941 and the third mating rod 942 are all connected by a pin 950.

[0040] Furthermore, the first main rod 830 has multiple first through holes, and the first mating rod 840 has multiple second through holes. The pin 950 passes through any one of the first through holes and any one of the second through holes in sequence. The structures of the second main rod 931 and the third main rod 941 are the same as those of the first main rod 830, and the structures of the second mating rod 932 and the third mating rod 942 are the same as those of the first mating rod 840. The main tooth plate 820, the first tooth plate 910, and the second tooth plate 920 all include a plate body and an arc-shaped tooth plate, and the arc-shaped tooth plate is detachably installed on the plate body.

[0041] Furthermore, multiple arc-shaped toothed plates are provided, and the multiple arc-shaped toothed plates are detachably connected to each other.

[0042] The arc-shaped toothed plates are installed on the plate body by bolts, and two adjacent arc-shaped toothed plates are connected by bolts.

[0043] In this embodiment, by having the pin 950 pass through any of the first through holes and any of the second through holes in sequence, when installing the weld joint heat treatment device for the hot-wall hydrogenation reactor, the distances between the first main rod 830 and the first mating rod 840, the second main rod 931 and the second mating rod 932, and the third main rod 941 and the third mating rod 942 can be adjusted according to the diameter of the cylindrical section 100 that needs to be heat-treated. At the same time, the arc-shaped toothed plate can be disassembled or installed, and a suitable first transmission belt 933 and second transmission belt 943 can be matched. In this way, the first heating group 400 and the second heating group 500 can surround the circumference of cylindrical sections 100 with different diameters, thereby improving the adaptability of the weld joint heat treatment device for the hot-wall hydrogenation reactor.

[0044] In a further embodiment, a heat treatment device for weld joints of a hot-wall hydrogenation reactor further includes a gas pipe 450, which is a corrugated pipe. The gas pipe 450 is provided with a plurality of first branch pipes 451 and a plurality of second branch pipes 452. Each first branch pipe 451 corresponds to a first spray gun 600, and each second branch pipe 452 corresponds to a second spray gun 700. Each first branch pipe 451 is connected to its corresponding first spray gun 600, and each second branch pipe 452 is connected to its corresponding second spray gun 700.

[0045] The mounting base 210 is equipped with an air passage, which connects the air pipe 450 to the external air source.

[0046] Furthermore, each of the first branch pipe 451 and the second branch pipe 452 is equipped with an air valve 453.

[0047] This embodiment utilizes a combination of an air pipe 450, multiple first branch pipes 451, and multiple second branch pipes 452. An external air source supplies air to the air pipe 450, which is then sprayed out after passing through a first spray gun 600 and a second spray gun 700, heat-treating the cylindrical section 100. By installing an air valve 453 on each first branch pipe 451 and second branch pipe 452, the air output of the first spray gun 600 connected to any first branch pipe 451 and the second spray gun 700 connected to any second branch pipe 452 can be individually controlled. Specifically, when treating the longitudinal seam, heat dissipation is faster on both sides, thus allowing for a relatively higher temperature on the sides to compensate for the faster heat dissipation. When treating the circumferential seam, the temperature is controlled to be low at the top, moderate in the middle, and high at the bottom to accommodate temperature convection and ensure a more uniform temperature throughout the circumference of the cylindrical section 100.

[0048] In a further embodiment, the cylindrical section 100 is mounted on the base 200 in a manner that allows it to move along its axial direction and rotate about its own axis.

[0049] The base 200 has multiple adjustment groups arranged along a first direction, located above the base 200. Each adjustment group includes an axial adjustment member 240 and a circumferential adjustment member 250. The axial adjustment member 240 includes a first adjustment seat 241 and two first adjustment rollers 242. The first adjustment seat 241 is movably mounted on the base 200, and the two first adjustment rollers 242 are evenly distributed on the first adjustment seat 241 along the first direction and are each rotatable around its own axis. The circumferential adjustment member 250 includes a second adjustment seat 251 and two second adjustment rollers 252. The second adjustment seat 251 is movably mounted on the base 200, and the two second adjustment rollers 252 are sequentially arranged on the second adjustment seat 251 along a second direction and are each rotatable around its own axis.

[0050] Specifically, both the first adjusting seat 241 and the second adjusting seat 251 are mounted on the base 200 via a second driving member. The second driving member, which is a hydraulic telescopic cylinder, is used to drive the first adjusting seat 241 and the second adjusting seat 251 to move up and down. A third motor 243 for driving the first adjusting roller 242 to rotate is provided on the first adjusting seat 241. A fourth motor 253 for driving the second adjusting roller 252 to rotate is provided on the second adjusting seat 251.

[0051] This embodiment uses multiple adjustment groups. When the cylindrical section 100 is placed on the base 200, the hydraulic telescopic cylinder that controls the up-and-down movement of the first adjustment seat 241 is activated, causing the two first adjustment rollers 242 to move up above the two second adjustment rollers 252. This ensures that when the operator uses a hoisting tool to place the cylindrical section 100 on the base 200, the first adjustment rollers 242 will contact the cylindrical section 100. Then, the third motor 243 is activated, driving the two first adjustment rollers 242 to rotate. Through friction transmission between the first adjustment rollers 242 and the cylindrical section 100, the cylindrical section 100 is moved along its axial direction.

[0052] When it is necessary to rotate the cylinder section 100, the hydraulic telescopic cylinder that controls the up and down movement of the second adjusting seat 251 is activated, causing the two second adjusting rollers 252 to move up above the two first adjusting rollers 242, thereby making the second adjusting rollers 252 contact the cylinder section 100. Then, the fourth motor 253 is activated to drive the two second adjusting rollers 252 to rotate. By utilizing the friction transmission between the second adjusting rollers 252 and the cylinder section 100, the cylinder section 100 is driven to rotate around its own axis.

[0053] Based on the above embodiments, the specific working process is as follows: When heat-treating the longitudinal seam on the cylinder section 100, it is only necessary to place the cylinder section 100 on the base 200, align the nozzles of the main spray gun 300, the first spray gun 600, and the second spray gun 700 with the longitudinal seam, and then perform heat treatment on the longitudinal seam. See [link / reference] Figure 1 As shown.

[0054] When heat treatment is required on the annular seam, the first motor 220 is started first, causing the main spray gun 300 to rotate 90° around the vertical direction until it is perpendicular to the first direction. Then, the hydraulic telescopic cylinder is started to drive the rack rod 810 to move up and down. The up and down movement of the rack rod 810 will drive the two first gears 211 meshing with it to rotate. Taking one of the first gears 211 as an example, the rotation of the first gear 211 will drive the first mating rod 840 connected to it to rotate through the first main rod 830. The rotation of the first mating rod 840 will drive the first spray gun 600 of the first heating group 400 or the first spray gun 600 of the second heating group 500 connected to it to swing. That is, the first spray gun 600 of the first heating group 400 and the first spray gun 600 of the second heating group 500, which are adjacent to the main spray gun 300, will revolve around the main spray gun 300. Furthermore, during the revolution, the first rotating gear 610 meshes with its corresponding main gear plate 820, thereby causing the first spray gun 600 of the first heating group 400 and the first spray gun 600 of the second heating group 500, which are adjacent to the main spray gun 300, to rotate on their own axes while revolving around the main spray gun 300. Based on this, by setting the rotation angle of the first rotating gear 610 relative to the main gear plate 820, the first rotating gear 610, after rotating, drives the nozzle of the first spray gun 600 towards the center of the cylinder section 100.

[0055] Simultaneously with the activation of the hydraulic telescopic cylinder, the second motor 841 is also activated. The activation of the second motor 841 drives the drive gear 842 to rotate. Taking the first heating group 400 as an example, the rotation of the drive gear 842 drives the driven gear to rotate, which in turn drives the second main rod 931 and the first transmission wheel 934 to rotate. The rotation of the second main rod 931 drives the second mating rod 932 to rotate, which in turn drives the second spray gun 700 to swing, i.e., to revolve relative to the first spray gun 600 in front of it. During this revolution, the second rotating gear 710 on the second spray gun 700 meshes with the first toothed plate 910 in front of it and rotates relative to the first toothed plate 910. By setting the rotation angle of the second rotating gear 710 relative to the first toothed plate 910, the rotated second rotating gear 710 drives the nozzle of the second spray gun 700 towards the center of the cylinder section 100. Furthermore, the first transmission wheel 934 drives the second transmission wheel 935 to rotate via the first transmission belt 933. The rotation of the second transmission wheel 935 drives the third main rod 941 and the second transmission wheel 935 to rotate. The rotation of the third main rod 941 drives the third mating rod 942 to rotate, and through the third mating rod 942, drives the first spray gun 600 located behind the second spray gun 700 to swing, that is, to make the first spray gun 600 revolve relative to the second spray gun 700 in front of it. During the revolution, the first rotating gear 610 on the first spray gun 600 will mesh with the second toothed plate 920 in front of it and rotate relative to the second toothed plate 920. By setting the rotation angle of the first rotating gear 610 relative to the second toothed plate 920, the first rotating gear 610 after rotation drives the nozzle of the first spray gun 600 to face the center of the cylinder section 100. Furthermore, the third drive wheel 944 will drive the fourth drive wheel 945 to rotate via the second drive belt 943. The rotation of the fourth drive wheel 945 will drive the second main rod 931 and the first drive wheel 934 on the other first spray gun 600 connected to it to rotate, and so on, changing the included angle between the first spray gun 600 / second spray gun 700 located on the rear side and the second spray gun 700 / first spray gun 600 located adjacent to it and on its front side, thereby changing the shape formed by the multiple first spray guns 600 and second spray guns 700, so that the multiple first spray guns 600 and multiple second spray guns 700 after rotation can surround the circumference of the cylindrical section 100, and the nozzles on the first spray gun 600 and the nozzles on the second spray gun 700 both point to the center of the cylindrical section 100, thereby switching the weld joint heat treatment device of the hot wall hydrogenation reactor to heat treat the annular seam. See Figure 2 As shown.

[0056] Example 2:

[0057] See Figure 13 As shown, the difference between this embodiment and the above embodiments is that: In the second transmission unit 900, the second transmission assembly includes a first connecting rod 960 and a second connecting rod 970, a first transmission member 930 and a second transmission member 940. Each first spray gun 600 and second spray gun 700 has a connecting groove 980, which is arranged radially along the first spray gun 600 and the second spray gun 700. A connecting block 990 is slidably disposed within the connecting groove 980. The first connecting rod 960 connects the second mating rod 932 and the connecting block 990, and is rotatably connected to the second mating rod 932 and the connecting block 990. The second connecting rod 970 connects the third mating rod 942 and the connecting block 990, and is rotatably connected to the third mating rod 942 and the connecting block 990.

[0058] In this embodiment, the first toothed plate 910, the second toothed plate 920, the first rotating gear 610, and the second rotating gear 710 are replaced by the first connecting rod 960 and the second connecting rod 970 in the second transmission group. In use, when the second main rod 931 rotates and drives the second mating rod 932 to rotate, and the second spray gun 700 swings through the second mating rod 932, that is, when the second spray gun 700 revolves relative to the first spray gun 600 in front of it, the third main rod 941 will also rotate and drive the third mating rod 942 to rotate, and the first spray gun 600 located behind the second spray gun 700 will swing through the third mating rod 942, that is, when the first spray gun 600 revolves relative to the second spray gun 700 in front of it. During the revolution adjustment process, a rhombus is constructed by the second mating rod 932, the third mating rod 942, the first connecting rod 960 and the second connecting rod 970, so that the second spray gun 700 located between the two first spray guns 600 rotates, so that the nozzle of the second spray gun 700 can automatically align with the center of the cylinder section 100.

[0059] The present invention also provides a process for a heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor, comprising the following steps: S10 causes the main spray gun 300 to rotate 90° around the vertical direction; S20, the first spray gun 600 of the first heating group 400 connected to the main spray gun 300 and the first spray gun 600 of the second heating group 500 rotate around the main spray gun 300 while rotating on their own axis. S30, causing the first spray gun 600 / second spray gun 700 to revolve around the second spray gun 700 / first spray gun 600 in front of it while rotating on its own axis.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor, used for heat treatment of cylindrical sections, characterized in that: The system includes a base, a main spray gun, a first heating group, and a second heating group. A cylindrical section is placed on the base, and the axial direction of the cylindrical section is referred to as the first direction, which is horizontal. The main spray gun is rotatably mounted on the base. The first and second heating groups are symmetrically arranged about the central axis of the main spray gun in the vertical direction. Both the first and second heating groups include multiple first and multiple second spray guns. Initially, the multiple first and multiple second spray guns are sequentially arranged in the first direction, and the first and second spray guns are alternately distributed in the first direction. The main spray gun, the first spray gun, and the second spray gun all have nozzles, which face one side of the cylindrical section. The main spray gun and one of the first spray guns in the first heating group... The first spray gun in the second heating group is arranged adjacent to the main spray gun and connected to the two first spray guns through the first transmission part; the first transmission part can drive the first spray gun connected to it to revolve around the main spray gun and rotate on its own axis at the same time; the adjacent first spray gun and the second spray gun are connected through the second transmission part, which can make the first spray gun revolve around the second spray gun in front of it and rotate on its own axis at the same time, and make the second spray gun revolve around the first spray gun in front of it and rotate on its own axis at the same time, and make the multiple first spray guns and multiple second spray guns surround the circumferential direction of the cylinder section, and make the nozzles on the first spray guns and the nozzles on the second spray guns both point to the center of the cylinder section; the side closer to the main spray gun in the first direction is called the front, and the side farther away from the main spray gun is called the rear.

2. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 1, characterized in that: The first transmission unit includes a first transmission group; the first transmission group includes a rack, two main gear plates, two first main rods, and two first mating rods; the main spray gun is mounted on the base via a mounting seat, and the mounting seat can rotate relative to the base in a vertical direction; both main gear plates are fixedly mounted on the mounting seat, and the main gear plates are sector-shaped plates; each first spray gun has a first rotating gear coaxially and fixedly mounted, and the first rotating gears on the two first spray guns adjacent to the main spray gun are correspondingly mounted to the two main gear plates, and the first rotating gears mesh with their corresponding main gear plates; the two first mating rods are respectively connected to the first spray guns of the first heating group and the first spray guns of the second heating group adjacent to the main spray gun; the rack is mounted on the mounting seat in a vertical direction and can move up and down; two first gears are rotatably mounted on the mounting seat, and the rack is located between the two first gears and meshes with the two first gears; the first gears, the first main rods, and the first mating rods are correspondingly mounted, and the first main rods connect to their corresponding first gears and first mating rods.

3. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 2, characterized in that: The second transmission unit includes two second transmission groups. Each second transmission group includes a first toothed plate, a second toothed plate, a first transmission component, and a second transmission component. The first toothed plate is coaxially and fixedly mounted on the first spray gun, and the second toothed plate is coaxially and fixedly mounted on the second spray gun. Each second spray gun is coaxially and fixedly mounted with a second rotating gear. The first toothed plate on the first spray gun meshes with the second rotating gear on the second spray gun located behind it, and the second toothed plate on the second spray gun meshes with the first rotating gear on the first spray gun located behind it. A first transmission member connects any first spray gun and a second spray gun located behind the first spray gun. The first transmission member enables the second spray gun to revolve relative to the first spray gun in front of it. A second transmission member connects any second spray gun and a first spray gun located behind the second spray gun. The second transmission member enables the first spray gun to revolve relative to the second spray gun in front of it.

4. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 3, characterized in that: The first transmission component includes a second main rod, a second mating rod, and a first transmission belt; the second main rod is rotatably mounted on the first spray gun, and the second mating rod is rotatably mounted on the second spray gun; the second main rod and the second mating rod are connected; a first transmission wheel is coaxially and fixedly mounted on the second main rod, and a second transmission wheel is coaxially and rotatably mounted on the second mating rod; the first transmission belt is sequentially wound around the first transmission wheel and the second transmission wheel; the second transmission component includes a third main rod, a third mating rod, and a second transmission belt; the third main rod is coaxially and fixedly connected to the second transmission wheel, and the third mating rod is rotatably mounted on the first spray gun located behind any of the second spray guns; the third main rod and the third mating rod are connected; a third transmission wheel is coaxially and fixedly mounted on the third main rod, and a fourth transmission wheel is coaxially and fixedly mounted on the first transmission wheel; the second transmission belt is sequentially wound around the third transmission wheel and the fourth transmission wheel.

5. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 4, characterized in that: The first main rod and the first mating rod, the second main rod and the second mating rod, and the third main rod and the third mating rod are all connected by pins.

6. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 1, characterized in that: It also includes a trachea, which is a corrugated pipe; the trachea is equipped with multiple first branches and multiple second branches, with each first branch corresponding to a first spray gun and each second branch corresponding to a second spray gun. The first branch is connected to its corresponding first spray gun, and the second branch is connected to its corresponding second spray gun.

7. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 6, characterized in that: Each of the first and second branch pipes is equipped with an air valve.

8. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 1, characterized in that: The cylindrical section is mounted on the base in a manner that allows it to move along its axial direction and rotate about its own axis.

9. The heat treatment apparatus for weld joints of a hot-wall hydrogenation reactor according to claim 2, characterized in that: The mounting base is mounted on the base via a first motor, which drives the mounting base to rotate in the vertical direction.

10. A process for a weld joint heat treatment apparatus for a hot-wall hydrogenation reactor, utilizing a weld joint heat treatment apparatus for a hot-wall hydrogenation reactor as described in any one of claims 1 to 9, comprising the following steps: S10 causes the main spray gun to rotate 90° around the vertical direction; S20, causing the first spray gun of the first heating group connected to the main spray gun and the first spray gun of the second heating group to revolve around the main spray gun while rotating on their own axis; S30, causing the first spray gun / second spray gun to revolve around the second spray gun / first spray gun in front of it while rotating on its own axis.

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