Large high-strength steel sphere welding assembly device

Abstract

The utility model provides a kind of large high-strength steel sphere welding group device, for welding large high-strength steel sphere, the two stages of large high-strength steel sphere are equipped with the opening parallel to equatorial plane, comprising: equatorial weld joint group device and hemispherical welding group device;This large high-strength steel sphere welding group device has the advantages of reasonable structure design, easy to manufacture, convenient maintenance and low manufacturing and using cost etc..Using the large high-strength steel sphere welding group device, effectively solve the large high-strength steel sphere welding group difficult in prior art, welding deformation cannot be controlled, welding precision cannot be guaranteed and many other problems, ensure the effective group of large high-strength steel sphere Welding and quality control.

Description

Technical Field

[0001] This utility model relates to the field of large sphere welding assembly technology, specifically to a large high-strength steel sphere welding assembly device. Background Technology

[0002] Pressure vessels in nuclear power plants, aviation, deep-sea submersibles, and some special scenarios often require large spherical structures to withstand high pressure. Therefore, large high-strength steel spheres are the main body for realizing the above-mentioned spherical structures and are key components of the equipment.

[0003] Currently, due to limitations in domestic large-scale die forging tooling, large high-strength steel spheres cannot be formed in one step. Therefore, the manufacturing process generally involves dividing the large high-strength steel sphere into two hemispheres, and each hemisphere is further divided into several melon-shaped parts (hereinafter referred to as "melon petals"). After each melon petal is processed by a forging and heat treatment machine, the melon petals are assembled and welded together to form a hemisphere. Finally, the two hemispheres are assembled and welded together along the equatorial weld seam to obtain a complete spherical structure.

[0004] Due to the large size of the high-strength steel spheres, it is difficult to control the welding accuracy before welding, and the welding quality requirements are high, and deformation during the welding process is not allowed. Conventional tooling and fixtures are difficult to meet the assembly accuracy and anti-deformation requirements. Therefore, a welding assembly device suitable for large high-strength steel spheres is needed. Utility Model Content

[0005] In view of this, the present invention provides a large high-strength steel sphere welding assembly device, specifically a large high-strength steel sphere welding assembly device equipped with a hemispherical welding assembly device and an equatorial weld assembly device.

[0006] The technical solution of this utility model is as follows:

[0007] A welding assembly device for large high-strength steel spheres is provided for welding large high-strength steel spheres. The large high-strength steel spheres have openings at both ends parallel to the equatorial plane, and include: an equatorial weld assembly device and a hemispherical weld assembly device.

[0008] The equatorial weld assembly device includes: an equatorial weld platform with a hollow annular structure, specifically including a foot pedal, a ladder, a railing, and a support column. The foot pedal and the ladder are supported on the ground by the support column. The railing is located on the outer periphery of the foot pedal, and the inner periphery of the foot pedal is close to the surface of the hemisphere to be welded, which facilitates the welding of the equatorial weld of the hemisphere to be welded.

[0009] The hemispherical welding assembly device includes a bottom ring with a circular outer contour, and several radial ribs circumferentially arranged on the bottom ring. The tops of the radial ribs are respectively fixedly connected to upper support rings, and the middle parts of the radial ribs are respectively fixedly connected to middle support rings. The upper support ring is provided with an anti-tipping device for pressing and fixing the top of the melon petal to be welded from the outside to the inside. The middle support ring is provided with a middle adjustment device for supporting the melon petal to be welded from the inside to the outside. The bottom ring is provided with a support positioning block for abutting against the bottom of the melon petal to be welded.

[0010] The bottom ring is also provided with a bottom adjustment device for pressing the bottom of the melon petals to be welded from the outside in;

[0011] The upper support ring is also provided with a top adjustment device, which is used to hold the top of the melon petal to be welded from the inside out.

[0012] The top adjustment device, middle adjustment device, and bottom adjustment device have the same structure, each including an adjustment bolt, a locking nut, and a base. The base is fixed on the bottom ring, middle support ring, or upper support ring. The base is provided with a threaded hole, and the adjustment bolt is set on the base through the threaded hole. The adjustment bolt is also provided with a locking nut.

[0013] The top anti-tipping device includes: an adjusting bolt, a locking nut, an anti-tipping pressure plate, a support base, a main pin and a secondary pin, and a cotter pin. The support base of the anti-tipping device is fixed to the upper support ring. In use, first pull out the cotter pin at the end of the secondary pin, then pull out the secondary pin. At this time, the anti-tipping pressure plate is hinged to the support base only by the main pin. Rotating the anti-tipping pressure plate can open the anti-tipping device to avoid interfering with the placement of the melon petals to be welded. After placing the melon petals to be welded in place, rotate the anti-tipping pressure plate in the opposite direction around the main pin until the secondary pin aligns with the secondary pin hole on the support base. Insert the secondary pin to initially fix the anti-tipping pressure plate. Insert the cotter pin into the hole at the end of the secondary pin to prevent the secondary pin from falling off. Then, rotate the adjusting bolt to press the end of the adjusting bolt against the surface of the melon petal to be welded. Fix the adjusting bolt in this position by adjusting the locking nut, thus achieving anti-tipping fixation of the melon petal to be welded.

[0014] The bottom ring has a support positioning block, which has a support platform and a positioning surface. The height difference between the surface of the support platform and the plane of the bottom ring is greater than 3cm, which facilitates the height positioning of the melon petals. The bottom of several radial keels is fixed to the bottom ring and interlocks with the middle support ring and the upper support ring to form a strong keel structure. This structure can effectively resist the deformation stress generated by the melon petals during the welding process, thereby ensuring that the semi-circular dimension accuracy of the welded melon petals meets the standard and reducing the amount of subsequent machining caused by welding deformation.

[0015] The top adjustment device, middle adjustment device, and bottom adjustment device have the same structure, each including: adjustment bolts, locking nuts, and bases. Twelve sets of the top adjustment device, middle adjustment device, and bottom adjustment device are evenly distributed around the circumference. Their bases are respectively fixed on the bottom ring, middle support ring, and upper support ring. Through this series of adjustment devices, the position of each petal can be finely adjusted, thereby achieving radial weld alignment and effectively ensuring the positioning accuracy of the welding.

[0016] It also includes an equatorial weld assembly device, which is a hollow ring and includes a foot pedal, a ladder, a fence, and a support column. The foot pedal and the ladder are supported on the ground by the support column. The fence is located on the outer periphery of the foot pedal, and the inner periphery of the foot pedal is close to the surface of the hemisphere to be welded.

[0017] In use, first open the anti-tipping device on the top of the hemispherical welding assembly device, then hoist the pieces to be welded onto the hemispherical welding assembly device in sequence. By adjusting the top adjustment device, middle adjustment device, and bottom adjustment device of the hemispherical welding assembly device, position the butt weld of the pieces to the precise position and tighten the locking nuts of each adjustment device. Then close and tighten the anti-tipping device on the top of the hemispherical welding assembly device, and then weld all radial welds of the pieces.

[0018] After the two hemispheres are welded separately, the bottom hemisphere to be welded is hoisted to the hollow position of the equatorial welding platform. Then, the top hemisphere to be welded is hoisted above the bottom hemisphere. Welding is carried out after the equatorial weld seam of the two hemispheres is accurately positioned. The equatorial welding platform is designed with railings to prevent personnel from falling. The platform has footboards for easy standing and placement of welding machines. The platform also has stairs for easy access. Support columns support the entire platform and railings.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] Large-diameter or even ultra-large-diameter high-strength steel spheres can be manufactured in sections using existing forging presses. These spheres can then be assembled into complete spheres using a welding assembly device. This large-diameter or ultra-large-diameter high-strength steel sphere welding assembly device has advantages such as reasonable structural design, ease of manufacture, convenient maintenance, and low manufacturing and operating costs. Using this device effectively solves many problems in existing technologies, such as difficulties in welding and assembling large-diameter high-strength steel spheres, uncontrollable welding deformation, and inability to guarantee welding precision, ensuring effective assembly welding and quality control of large-diameter high-strength steel spheres. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the walkway structure for the sphere and equatorial weld seam to be welded.

[0023] Figure 2 Schematic diagram of the equatorial weld walkway structure;

[0024] Figure 3 This is a schematic diagram of the device for welding the melon petals and hemispheres to be assembled.

[0025] Figure 4 This is a schematic diagram of the hemispherical welding assembly device.

[0026] Figure 5 This is a schematic diagram of the top anti-tipping device structure;

[0027] Figure 6 A schematic diagram of the keel structure with all adjustment devices omitted;

[0028] Figure 7 This is a schematic diagram of the adjustment device.

[0029] In the diagram: 1. Sphere to be welded; 2. Equatorial weld walkway; 3. Fence; 4. Stepping board; 5. Ladder; 6. Support column; 7. Petal to be welded; 8. Hemispherical welding assembly device; 9. Top plate anti-tipping device; 10. Radial keel; 11. Top adjustment device; 12. Middle adjustment device; 13. Bottom adjustment device; 14. Adjusting bolt; 15. Locking nut; 16. Anti-tipping pressure plate; 17. Support base; 18. Pin; 19. Cotter pin; 20. Upper support ring; 21. Radial keel; 22. Middle support ring; 23. Bottom ring; 24. Support positioning block; 25. Adjusting bolt; 26. Locking nut; 27. Base. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0031] Combination Figure 1This utility model provides a large high-strength steel sphere welding assembly device, specifically a device equipped with a hemispherical welding assembly device and an equatorial weld assembly device. When the large high-strength steel sphere welding assembly device is applied to a size of... In the welding assembly of large high-strength steel spheres with wall thicknesses ranging from 20 mm to 200 mm, the specific setup of the welding assembly device is as follows:

[0032] In this embodiment, a large high-strength steel sphere welding assembly device includes: an equatorial weld assembly device 100 and a hemispherical welding assembly device 8;

[0033] The equatorial weld assembly device 100 includes an equatorial weld walkway 2, which has a hollow structure, such as... Figure 2 As shown, it includes: fence 3, step 4, walkway 5, support column 6, and the hemisphere 1 to be welded is placed in the hollow position in the middle of the equatorial weld walkway 2.

[0034] In use, the bottom hemisphere 1 of the assembly to be welded is hoisted to the hollow position of the equatorial welding platform 2, and then the top hemisphere of the assembly to be welded is hoisted above the bottom hemisphere. Welding is carried out after the equatorial weld seam of the two hemispheres is accurately positioned. The equatorial welding platform 2 is designed with railings 3 to prevent the risk of personnel falling. The foot pedals 4 of the equatorial welding platform 2 facilitate the standing of personnel and the placement of welding machines. The ladders 5 of the equatorial welding platform 2 facilitate the movement of personnel up and down the equatorial welding platform 2. The support columns of the equatorial welding platform 2 are used to support the railings 3 and foot pedals 4 of the entire equatorial welding platform 2.

[0035] like Figure 4 As shown, the hemispherical welding assembly device 8 includes: a top anti-tipping device 9, a keel frame 10, a top adjustment device 11, a middle adjustment device 12, and a bottom adjustment device 13, wherein 12 sets of the top anti-tipping device 9, the top adjustment device 11, the middle adjustment device 12, and the bottom adjustment device 13 are evenly distributed around the circumference and fixed on the keel frame 10.

[0036] like Figure 6 As shown, the keel frame 10 includes an upper support ring 20, a radial keel 21, a middle support ring 22, a bottom ring 23, and a support positioning block 24. The bottom ring 23 of the keel frame 10 has a support positioning block 24, which facilitates the height positioning of the melon petals. The bottom of the radial keel 21 is fixed to the bottom ring 23 and interlocks with the middle support ring 22 and the upper support ring 20 to form a strong keel structure. This structure can effectively resist the deformation stress of the melon petals 7 caused by welding, thereby achieving the hemispherical dimensional accuracy of the melon petals 7 after welding and greatly reducing the subsequent machining work caused by welding deformation.

[0037] The top anti-tipping device 9 includes: adjusting bolt 14, locking nut 15, anti-tipping pressure plate 16, support base 17, pin 18, and cotter pin 19. The support base 17 of the top anti-tipping device 9 is fixed to the support ring 20 on the keel frame 10. The anti-tipping pressure plate 16 is hinged to the support base 17 through two pins 18. The ends of the two pins 18 are provided with pin holes to facilitate the insertion and removal of the cotter pin 19.

[0038] In use, first pull out the cotter pin 19 at the end of the pin 18, then check the pin 18, rotate the anti-tipping pressure plate 16, and the top anti-tipping device 9 can be opened. When it is necessary to close, rotate the anti-tipping pressure plate 16 in the opposite direction until the secondary pin is aligned with the pin hole on the support seat, insert the secondary pin into the pin hole, and insert the cotter pin 19 into the pin hole. The whole operation process is very convenient.

[0039] like Figure 7 As shown, the adjustment device includes: adjustment bolt 25, locking nut 26, and base 27. The adjustment device is divided into three layers, with 12 sets evenly distributed in each layer. The base 27 is fixed on the bottom ring 23, the middle support ring 22, and the upper support ring 20 respectively. Through this adjustment device, the petals can be finely adjusted to achieve radial weld alignment and effectively ensure the positioning accuracy of the welding.

[0040] In use, first open the top anti-tipping device 9 of the hemispherical welding assembly device 8, then hoist the 7 pieces to be welded onto the hemispherical welding assembly device 8 in sequence. By adjusting the top adjustment device 11, middle adjustment device 12, and bottom adjustment device 13 of the hemispherical welding assembly device 8, align the butt welds of the 7 pieces to be welded and tighten the locking nuts 26 of each adjustment device. Then close the top anti-tipping device 9 of the hemispherical welding assembly device 8, adjust its adjusting bolt 14, and tighten the locking nut 15. Then weld all radial welds of the pieces.

[0041] Although the present invention has been described in detail with reference to preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and all such modifications or substitutions should be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A large high-strength steel sphere welding set-up device for welding a large high-strength steel sphere, the large high-strength steel sphere having openings at two levels parallel to an equatorial plane, characterized in that, The welding assembly device includes a hemispherical welding assembly device, which includes a bottom ring with a circular outer contour and several radial ribs circumferentially arranged on the bottom ring. The tops of the radial ribs are respectively fixedly connected to upper support rings, and the middle parts of the radial ribs are respectively fixedly connected to middle support rings. The upper support ring is provided with an anti-tipping device for pressing and fixing the top of the melon petal to be welded from the outside to the inside. The middle support ring is provided with a middle adjustment device for supporting the melon petal to be welded from the inside to the outside. The bottom ring is provided with a support positioning block for abutting against the bottom of the melon petal to be welded.

2. The apparatus for welding pairs of large high-strength steel spheres according to claim 1, wherein The bottom ring is also equipped with a bottom adjustment device for pressing the bottom of the melon petals to be welded from the outside in.

3. The apparatus for welding pairs of large high-strength steel spheres of claim 1, wherein, The upper support ring is also provided with a top adjustment device, which is used to hold the top of the melon petal to be welded from the inside out.

4. The apparatus for welding pairs of large high-strength steel spheres according to claim 3, wherein The top adjustment device, middle adjustment device, and bottom adjustment device have the same structure, each including an adjustment bolt, a locking nut, and a base. The base is fixed on the bottom ring, middle support ring, or upper support ring. The base is provided with a threaded hole, and the adjustment bolt is set on the base through the threaded hole. The adjustment bolt is also provided with a locking nut.

5. The apparatus for welding pairs of large high-strength steel spheres of claim 3, wherein, The anti-tipping device includes adjusting bolts, locking nuts, anti-tipping pressure plates, support seats, main pins, and auxiliary pins. The support seats are fixed to the upper support ring. The anti-tipping pressure plates are hinged to the support seats via the main pins and positioned and locked via the auxiliary pins. Adjusting bolts and locking nuts for pressing the melon petals to be welded are provided on the anti-tipping pressure plates.

6. The large high-strength steel sphere welding assembly device as described in claim 3, characterized in that, The support positioning block is provided with a support platform and a positioning surface, and the height difference between the surface where the support platform is located and the plane where the bottom ring is located is greater than 3cm.

7. The apparatus for welding pairs of large high-strength steel spheres according to claim 3, wherein It also includes an equatorial weld assembly device, which is a hollow ring and includes a foot pedal, a ladder, a fence, and a support column. The foot pedal and the ladder are supported on the ground by the support column. The fence is located on the outer periphery of the foot pedal, and the inner periphery of the foot pedal is close to the surface of the hemisphere to be welded.

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