Arc striking and extinguishing device for straight seam welding of offshore wind power tubular pile cylinder

Abstract

The utility model relates to an arc striking and extinguishing device for straight seam welding of an offshore wind power pipe pile cylinder, which adopts four small plates to form a groove which is the same as a welded seam, the small plates are arranged at an arc starting position and an arc stopping position of the formal welded seam, the length of the small plates is 180mm-220mm, during assembly, the arc striking and extinguishing plate is tightly attached to a welded steel plate, and the arc striking and extinguishing device is convenient to assemble. The angle formed by the run-on and run-off plates is consistent with the angle of a weld groove, the depth of the groove formed by the run-on and run-off plates is consistent with the depth of a welded steel plate groove during assembly, the thickness of the run-on and run-off plates is not limited and can be 10-30 mm, and the thinner the thickness is, the more the steel weight is saved. Aiming at the straight seam welding of the offshore wind power tubular pile cylinder, the utility model overcomes the defects that the original run-on and run-off plate consumes a large number of steel plates, the time for manufacturing the run-on and run-off plate is long, the material cost and the labor cost are higher, and the like, thereby not only saving the material and time, but also reducing the labor and cost investment, and greatly improving the welding efficiency and period.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of offshore wind power pipe pile manufacturing field especially relates to a kind of for offshore wind power pipe pile cylinder straight seam welding arc extinguishing device. BACKGROUND

[0002] With the development of offshore wind power new energy, the megawatt of offshore wind turbine is larger and larger, and the steel plate used for the pipe pile as an important support structure is thicker and thicker, a large number of arc extinguishing plates are used in the process of making cylinder section. The thickness of the steel plate used for offshore wind power pipe pile reaches or approaches 150 mm, and an arc extinguishing plate with the same thickness and material as the steel plate is used in the straight seam welding of the cylinder. The size of the arc extinguishing plate is 200 mm*150 mm, a groove is cut on the arc extinguishing plate, the groove is the same as the welded seam, and is generally 60°, X-shaped groove. When welding, the arc is started and extinguished on the arc extinguishing plate.

[0003] This structure consumes a large amount of steel plate, and the time for making the arc extinguishing plate is also relatively long, resulting in high material cost and labor cost, especially for thick plate welding, the waste is more serious. INVENTION CONTENTS

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a low-cost, simple, applicable and efficient arc extinguishing device for welding.

[0005] The utility model is realized by the following technical solutions:

[0006] An arc extinguishing device for straight seam welding of offshore wind power pipe pile cylinder, which adopts four small plates to form the same groove as the welded seam, and is installed at the arc starting position and arc extinguishing position of the formal weld, with a length of 180-220 mm.

[0007] When assembled, the arc extinguishing plate is closely attached to the welded steel plate, and the angle formed by the arc extinguishing plate is consistent with the groove angle of the weld.

[0008] When assembled, the groove depth formed by the arc extinguishing plate is consistent with the groove depth of the welded steel plate. The thickness of the arc extinguishing plate is not limited, which can be 10-30 mm. The thinner the thickness is, the more steel material weight is saved.

[0009] The arc extinguishing plate and the welded seam should be in the same straight line direction and cannot be inclined.

[0010] The included angle between the four arc extinguishing plates is 30-60° to adapt to the welding requirements of different groove angles.

[0011] The material of the arc extinguishing plate is consistent with the material of the steel plate to be welded.

[0012] In summary, the beneficial technical effects of this utility model are as follows: For the straight seam welding of offshore wind turbine pipe pile bodies, a simple and applicable arc ignition and extinguishing device is provided, which overcomes the shortcomings of the original arc ignition and extinguishing plate, which consumes a large amount of steel plate and takes a long time to manufacture, resulting in high material and labor costs and serious waste. It saves materials and time, reduces manpower and cost input, and greatly improves welding efficiency and cycle time. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0014] Fig. 2 This is a schematic diagram of the state when this utility model is in use.

[0015] In the diagram, 1 is the arc-starting and extinguishing plate; 2 is the steel plate to be welded. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Reference Figs. 1-2 This invention relates to an arc-starting and extinguishing device for straight seam welding of offshore wind turbine pile bodies. The device is scientifically designed and simply structured, mainly composed of four arc-starting and extinguishing plates 1. These plates are made of the same material as the steel plate 2 to be welded, ensuring consistent welding performance. Each plate is designed to be between 180mm and 220mm long, forming a bevel shape identical to the weld seam being welded. These plates are installed at the arc-starting and arc-ending positions of the actual weld seam, ensuring stable welding quality.

[0018] During assembly, the arc-starting and extinguishing plate 1 fits tightly against the steel plate 2 to avoid gaps that could affect the welding effect. Simultaneously, the bevel angle formed by the arc-starting and extinguishing plate 1 is consistent with the weld bevel angle, and the bevel depth perfectly matches the weld bevel depth, thus achieving precise matching. This design ensures the stability of the arc and the uniformity of the weld during welding, effectively preventing welding defects during arc initiation and termination.

[0019] The thickness of the arc-extinguishing plate 1 is not strictly limited and can be selected from any thickness within the range of 10mm to 30mm according to actual needs. A thinner arc-extinguishing plate not only meets functional requirements but also significantly reduces steel consumption and saves material costs. To further improve welding efficiency, the arc-extinguishing plate 1 does not require beveling during manufacturing. This innovative design not only saves processing time but also avoids the additional labor costs associated with beveling in traditional welding.

[0020] The installation requirements for the arc-quenching and extinguishing plate 1 are also very clear. It must be kept in the same straight direction as the weld being welded, and there must be no tilting, otherwise it may lead to welding deviation. In addition, in order to adapt to the needs of different weld bevel angles, the included angle between the four arc-quenching and extinguishing plates is designed to be in the range of 30° to 60°, which can flexibly cope with a variety of welding scenarios.

[0021] The design principle of this embodiment is simple and practical, and it is particularly suitable for straight seam welding of offshore wind turbine pile bodies. Traditional arc-extinguishing plate designs have many drawbacks, such as high steel consumption, long manufacturing cycles, and high labor costs, which seriously restrict the efficiency and economy of welding work. However, this invention overcomes the shortcomings of traditional solutions through optimized design, significantly reduces material and time waste, and reduces manpower input in the welding process, thereby greatly improving the efficiency of welding work and the construction cycle.

[0022] By adopting this device, the arc initiation and termination processes are more precise, the weld quality is more reliable, and it also saves companies a significant amount of material and labor costs, demonstrating high economic value and practicality. This arc initiation and extinguishing device is not only simple in structure and easy to manufacture, but also convenient to use and highly adaptable, making it particularly suitable for the welding needs of large-scale offshore wind turbine pipe piles.

[0023] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An arc extinguishing device for straight seam welding of offshore wind turbine monopile cylinder, characterized in that: The device comprises four arc striking and extinguishing plates (1), the length of the arc striking and extinguishing plate (1) is 180mm-220mm, the thickness of the arc striking and extinguishing plate (1) is 10mm-30mm, the arc striking and extinguishing plate (1) is tightly attached to the steel plate (2) to be welded, the angle formed by the adjacent arc striking and extinguishing plates (1) is consistent with the welding groove angle, and the formed groove depth is consistent with the groove depth of the steel plate to be welded.

2. The arc extinguishing device for straight seam welding of offshore wind turbine pipe pile cylinder according to claim 1, characterized in that: The length of the arc striking and extinguishing plate (1) is 200mm.

3. The arc extinguishing device for straight seam welding of offshore wind turbine pipe pile cylinder according to claim 1, characterized in that: The thickness of the arc striking and extinguishing plate (1) is 20mm.

4. The arc extinguishing device for straight seam welding of offshore wind turbine pipe pile cylinder according to claim 1, characterized in that: The arc striking and extinguishing plate (1) is kept on the same line with the welding seam to be welded.

5. The arc extinguishing device for straight seam welding of offshore wind turbine pipe pile cylinder according to claim 1, characterized in that: The included angle between the four arc striking and extinguishing plates (1) is 30-60°, so as to adapt to the welding requirements of different groove angles.

6. The arc extinguishing device for straight seam welding of offshore wind turbine pipe pile cylinder according to claim 1, characterized in that: The material of the arc striking and extinguishing plate (1) is consistent with the material of the steel plate (2) to be welded.

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