A pre-welding heating device for a suction anchor top cover plate

Abstract

The utility model discloses a kind of suction anchor top cover plate preheating devices before welding, belong to offshore wind power guide pipe frame suction anchor structure construction field, including preheating structure and support structure, preheating structure and support structure are fixed by welding between, the preheating structure includes muscle pipe, main pipe, first connecting pipe, second connecting pipe, fire arrestor welding head, fire arrestor, ball valve, ball valve connector, plugging plate, valve, valve connecting pipe, crater guide pipe, gas nozzle, crater bottom plate and crater nut, the support structure includes wheel, base, reinforcing rib plate, extension inner tube, extension outer tube, bottom wheel welding plate, support inner tube, support outer tube, bolt and bolt rod;The utility model avoids the technical difficulties that unevenly preheated by artificial baking stick;Artificial gun preheating is avoided simultaneously, and safety risk is reduced;Preheating device can be conveniently pushed and pulled disassembly, reduce artificial handling;Control gas flow, effectively control preheating temperature;Artificial cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of offshore wind power jacket suction anchor structure construction, specifically involving a preheating device for welding the top cover plate of a suction anchor. Background Technology

[0002] In the field of offshore wind power jacket foundations, suction anchors are an important structural component of jacket foundation products, mainly composed of top cover plates, top tie rods, and cylinders. The top cover plates are large in size (diameter ≥10m) and thick (≥50mm), and are usually spliced ​​from multiple rods. According to marine engineering industry standards, the welding requirements are extremely high. Before welding, the area within 75mm on both sides of the weld bevel needs to be uniformly preheated (temperature usually ≥75°).

[0003] Traditional preheating methods often involve manual heating, which easily leads to uneven heating, low efficiency, and requires multiple people to perform the preheating operation simultaneously, posing high safety risks. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a preheating device for welding the top cover plate of a suction anchor, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a preheating device for the top cover plate of a suction anchor, comprising a preheating structure and a supporting structure, wherein the preheating structure and the supporting structure are fixed together by welding. The preheating structure includes a reinforcing pipe, a main pipe, a first connecting pipe, a second connecting pipe, a flame arrester welding head, a flame arrester, a ball valve, a ball valve connector, a sealing plate, a valve, a valve connecting pipe, a vent guide pipe, a gas nozzle, a vent base plate, and a vent nut. The ball valve connector is inserted into the connecting pipe of an external gas cylinder or gas container for connection. The ball valve is rotatably sleeved and fixed to the ball valve connector. The flame arrester is rotated and fixed, and the flame arrester and the flame arrester welding head are fixed by welding. The other end of the flame arrester welding head is fixed by welding to the second connecting pipe. The middle opening of the first connecting pipe is fixed by welding to the second connecting pipe. The two ends of the first connecting pipe are fixed by welding to one end of each of the two main pipes. The main pipe is divided into front and rear sections. A valve is connected between the front and rear sections of the main pipe through a valve connecting pipe. The gas nozzle is inserted into the gas outlet of the main pipe and fixed by welding. The other end of the gas nozzle passes through the burner nut and the burner base plate. The burner guide tube is fixed by welding to the burner base plate. The support structure includes wheels, a base, reinforcing ribs, an extended inner tube, an extended outer tube, a bottom wheel welding plate, a supporting inner tube, a supporting outer tube, bolts, and bolt rods. The wheels are installed at the bottom of the base. The base and the supporting outer tube are fixed by welding. The lower end of the extended inner tube is inserted into the upper end of the supporting outer tube. The upper end of the extended inner tube is fixed by welding to the extended outer tube. The lower end of the supporting inner tube is inserted into the upper end of the extended outer tube. The upper end of the supporting inner tube is fixed by welding to the main tube of the preheating structure.

[0006] In a preferred embodiment, the front and rear sections of the main pipe are fixed to the valve connecting pipe by welding. There are four valve connecting pipes. The non-spiral end of the valve connecting pipe is connected to the main pipe, and the threaded end of the valve connecting pipe is rotated and tightened to the valve.

[0007] In a preferred embodiment, the sealing plate is welded and fixed to the end of the main pipe.

[0008] In a preferred embodiment, the reinforcing tube is welded and fixed between the two main tubes.

[0009] In a preferred embodiment, the wheel is connected to the reinforcing rib plate via a rotating shaft, the reinforcing rib plate is fixed to the bottom wheel welding plate by welding, and the bottom wheel welding plate is fixed to the base by welding.

[0010] In a preferred embodiment, the outer support tube and the extended inner tube are fixed by bolts, and the bolts and bolt rods are fixed by welding.

[0011] In a preferred embodiment, the extended outer tube and the supporting inner tube are fixed together by bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The suction anchor top cover plate preheating device is equipped with adjustable height double-row nozzles to ensure uniform preheating on both sides of the weld; the preheating device is equipped with a ball valve to adjust the size of the preheating flame to control the heat input and achieve the preheating temperature; the preheating device is equipped with traveling rollers to reduce manual handling; the preheating device is equipped with a flame arrester and a ball valve to cut off the gas supply at any time, reducing safety risks. The preheating device for the top cover of the suction anchor avoids the technical difficulties of uneven heating caused by manual heating; it allows for real-time control of the flammable gas switch, while also eliminating the need for manual preheating by holding the gun, thus reducing safety risks; the preheating device can be easily pushed, pulled, and disassembled, reducing manual handling; it controls the gas flow rate to effectively control the preheating temperature; and it reduces labor costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 For the present utility model Figure 1 Enlarged view of the structure at point B in the middle.

[0014] In the diagram: 1. Wheel; 2. Flame vent guide; 3. Gas nozzle; 4. Flame vent base plate; 5. Flame vent nut; 6. Inner support tube; 7. Outer support tube; 8. Bolt; 9. Bolt rod; 10. Rib tube; 11. Main tube; 12. First connecting tube; 13. Second connecting tube; 14. Flame arrester welding head; 15. Flame arrester; 16. Ball valve; 17. Ball valve connector; 18. Sealing plate; 19. Base; 20-1. Extended outer tube; 20-2. Extended inner tube; 21. Valve; 22. Valve connecting tube; 23. Bottom wheel welding plate; 24. Reinforcing rib plate. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0017] Please see Figure 1-3This utility model provides a preheating device for the top cover plate of a suction anchor before welding, including a preheating structure and a supporting structure. The preheating structure and the supporting structure are fixed together by welding. The preheating structure includes a reinforcing pipe 10, a main pipe 11, a first connecting pipe 12, a second connecting pipe 13, a flame arrester welding head 14, a flame arrester 15, a ball valve 16, a ball valve connector 17, a sealing plate 18, a valve 21, a valve connecting pipe 22, a flare guide 2, a gas nozzle 3, a flare base plate 4, and a flare nut 5. The ball valve connector 17 is inserted into the connecting pipe of an external gas cylinder or gas container for connection. The ball valve 16 is rotated and fixed to the ball valve connector 17, and the ball valve 16 is rotated and fixed to the flame arrester 15. The ball valve 16 controls and adjusts the preheating gas flow rate. The flame arrester 15 is fixed to the flame arrester welding head 14 by welding. The other end of the flame arrester welding head 14 is fixed to the second connecting pipe 13 by welding. The first connecting pipe 12 contains... The opening is fixed to the second connecting pipe 13 by welding. The two ends of the first connecting pipe 12 are fixed to one end of the two main pipes 11 by welding. The main pipe 11 is divided into front and rear sections. The front and rear sections of the main pipe 11 are connected to the valve 21 by the valve connecting pipe 22. The front and rear sections of the main pipe 11 are fixed to the valve connecting pipe 22 by welding. There are four valve connecting pipes 22. The non-spiral end of the valve connecting pipe 22 is connected to the main pipe 11. The threaded end of the valve connecting pipe 22 is rotated and tightened to the valve 21. The valve 21 controls the actual preheating range. The sealing plate 18 is welded and fixed to the end of the main pipe 11. The reinforcing pipe 10 is welded and fixed between the two main pipes 11. The gas nozzle 3 is inserted into the gas outlet of the main pipe 11 and fixed by welding. The other end of the gas nozzle 3 passes through the burner nut 5 and the burner base plate 4. The burner guide 2 is fixed to the burner base plate 4 by welding. The burner nut 5 is used to adjust the height of the burner guide 2. The support structure includes a wheel 1, a base 19, a reinforcing rib plate 24, an extended inner tube 20-2, an extended outer tube 20-1, a bottom wheel welding plate 23, a supporting inner tube 6, a supporting outer tube 7, bolts 8, and bolt rods 9. The wheel 1 is installed at the bottom of the base 19. The wheel 1 is connected to the reinforcing rib plate 24 via a rotating shaft. The reinforcing rib plate 24 is fixed to the bottom wheel welding plate 23 by welding. The bottom wheel welding plate 23 is fixed to the base 19 by welding. The base 19 is fixed to the supporting outer tube 7 by welding. The lower end of the extended inner tube 20-2 is inserted into the upper end of the supporting outer tube 7. The supporting outer tube 7 is fixed to the extended inner tube 20-2 by bolts 8. Bolt 8 and bolt rod 9 are fixed by welding. Rotating bolt rod 9 can adjust bolt 8, thereby allowing the extended inner tube 20-2 and the supporting outer tube 7 to slide relative to each other, adjusting the height of the supporting structure. The upper end of the extended inner tube 20-2 is fixed by welding to the extended outer tube 20-1. The lower end of the supporting inner tube 6 is inserted into the upper end of the extended outer tube 20-1. The extended outer tube 20-1 and the supporting inner tube 6 are fixed by bolt 8. Rotating bolt rod 9 can adjust bolt 8, thereby allowing the supporting inner tube 6 and the extended outer tube 20-1 to slide relative to each other, adjusting the height of the supporting structure. The upper end of the supporting inner tube 6 is fixed by welding to the main tube 11 of the preheating structure.

[0018] The working principle and usage process of this utility model are as follows: The preheating device is equipped with a double-row nozzle with adjustable height to ensure uniform preheating on both sides of the weld; the preheating device is equipped with a ball valve to adjust the size of the preheating flame to control the heat input and achieve the preheating temperature; the preheating device is equipped with traveling rollers to reduce manual handling; the preheating device is equipped with a flame arrester and a ball valve to cut off the gas supply at any time, reducing safety risks.

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

Claims

1. A preheating device for welding the top cover plate of a suction anchor, comprising a preheating structure and a supporting structure, characterized in that: The preheating structure and the supporting structure are fixed together by welding. The preheating structure includes a reinforcing pipe (10), a main pipe (11), a first connecting pipe (12), a second connecting pipe (13), a flame arrester welding head (14), a flame arrester (15), a ball valve (16), a ball valve connector (17), a sealing plate (18), a valve (21), a valve connecting pipe (22), a vent guide pipe (2), a gas nozzle (3), a vent base plate (4), and a vent nut (5). The ball valve connector (17) is inserted into the connecting pipe of an external gas cylinder or gas container for connection. The ball valve (16) is rotated and fixed to the ball valve connector (17). The ball valve (16) is rotated and fixed to the flame arrester (15). The flame arrester (15) is connected to the flame arrester. The flame arrester welding head (14) is fixed by welding. The other end of the flame arrester welding head (14) is fixed by welding to the second connecting pipe (13). The middle opening of the first connecting pipe (12) is fixed by welding to the second connecting pipe (13). The two ends of the first connecting pipe (12) are fixed by welding to one end of the two main pipes (11). The main pipe (11) is divided into front and rear sections. The front and rear sections of the main pipe (11) are connected by a valve (21) through a valve connecting pipe (22). The gas nozzle (3) is inserted into the gas outlet of the main pipe (11) and fixed by welding. The other end of the gas nozzle (3) passes through the vent nut (5) and the vent base plate (4). The vent guide (2) is fixed by welding to the vent base plate (4). The support structure includes a wheel (1), a base (19), a reinforcing rib plate (24), an extended inner tube (20-2), an extended outer tube (20-1), a bottom wheel welding plate (23), a support inner tube (6), a support outer tube (7), a bolt (8), and a bolt rod (9). The wheel (1) is installed at the bottom of the base (19). The base (19) and the support outer tube (7) are fixed by welding. The lower end of the extended inner tube (20-2) is inserted into the upper end of the support outer tube (7). The upper end of the extended inner tube (20-2) is fixed by welding to the extended outer tube (20-1). The lower end of the support inner tube (6) is inserted into the upper end of the extended outer tube (20-1). The upper end of the support inner tube (6) is fixed by welding to the main tube (11) of the preheating structure.

2. The preheating device for welding the top cover plate of a suction anchor according to claim 1, characterized in that: The front and rear sections of the main pipe (11) are fixed to the valve connecting pipe (22) by welding. There are four valve connecting pipes (22). The non-spiral end of the valve connecting pipe (22) is connected to the main pipe (11), and the threaded end of the valve connecting pipe (22) is rotated and tightened to the valve (21).

3. The preheating device for welding the top cover plate of a suction anchor according to claim 1, characterized in that: The sealing plate (18) is welded and fixed to the end of the main pipe (11).

4. The preheating device for welding the top cover plate of a suction anchor according to claim 1, characterized in that: The reinforcing tube (10) is welded and fixed between the two main tubes (11).

5. The preheating device for welding the top cover plate of a suction anchor according to claim 1, characterized in that: The wheel (1) is connected to the reinforcing rib plate (24) by a rotating shaft. The reinforcing rib plate (24) is fixed to the bottom wheel welding plate (23) by welding. The bottom wheel welding plate (23) is fixed to the base (19) by welding.

6. The preheating device for welding the top cover plate of a suction anchor according to claim 1, characterized in that: The outer support tube (7) and the extended inner tube (20-2) are fixed by bolts (8), and the bolts (8) and the bolt rods (9) are fixed by welding.

7. The preheating device for welding the top cover plate of a suction anchor according to claim 1, characterized in that: The extended outer tube (20-1) and the supporting inner tube (6) are fixed by bolts (8).

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