Structural design and process design of frame-type thin-wall compact welding structural member

Abstract

The invention relates to the technical field of titanium alloy machining, in particular to structural design and process design of a frame type thin-wall compact welding structural component, and the structural component is of a thin-wall structure formed by sequentially welding and connecting a thin-wall cylinder, a corner, a bottom plate, a sealing plate and a reinforcing material; a first through hole is formed in the bottom plate; the center ring is welded with the bottom plate; the length direction of the second reinforcing material is perpendicular to the circumferential first reinforcing material, and one end of the second reinforcing material is connected with the outer wall of the center ring in a welded mode. The center pipe extends into the frame type thin-wall structure and is welded to the center ring, and the radial distance between the outer wall of the center pipe and the inner wall of the thin-wall cylinder is not larger than 400 mm. Local optimization design is carried out on the basis of structural design of steel equipment, the structural size and structural characteristics of the steel equipment are kept, enough operation space is provided for welding operation, the problem that welding cannot be achieved at the local position of a frame thin-wall compact welding structural part is solved, and the welding efficiency is improved. Therefore, upgrading and quality upgrading of the equipment are realized.

Description

Technical Field

[0001] The invention relates to the technical field of titanium alloy processing, and in particular to the structural design and process design of a frame-type thin-wall compact welded structural part. Background Art

[0002] A certain equipment is in seawater and marine environment for a long time, and is required to have long-term quality stability.

[0003] This equipment is usually made of steel. Since steel has poor corrosion resistance to seawater and marine environment, steel equipment needs to be inspected and replaced from time to time, and its effectiveness cannot be guaranteed during use. Therefore, it is of great significance to use titanium alloy materials that are almost non-corrosive in seawater and marine environment as a replacement.

[0004] In order to ensure the quality stability, interchangeability and adaptability of the equipment, when titanium alloy is used as a substitute, only the material is replaced while the original structural design is retained. Due to the different welding methods of steel equipment and titanium equipment, the requirements for operating space for welding operations are very different. For steel, welding with welding rods can achieve welding operations in a very small space. However, the use of titanium alloy materials requires sufficient operating space. According to the structural design and construction of steel equipment, there may be problems with inaccessible welding in some parts, and the equipment manufacturing cannot be completed.

[0005] Publication No.: CN1335436A A welding structure of a boss and a bracket and a welding method thereof, wherein a first hole 14 and a second hole 15 of a prescribed shape are provided on a cylindrical body 11 formed by a thin plate, a boss base plate 23 covering the first hole is provided on the boss 20, and a bracket base plate 32 covering the second hole is provided on the bracket 30, the boss and the bracket are inserted into the cylindrical body, the first hole is covered with the boss base plate from the inside, the second hole is covered with the bracket base plate, and they are respectively welded to the cylindrical body from the outside of the cylindrical body. The invention realizes fixing the bracket and the boss on the inner wall of the cylindrical body by opening a hole on the cylindrical body, but it is impossible to realize the operation of welding inside the cylindrical body.

[0006] Therefore, it is urgent to design the structural design and process design of a new type of frame-type thin-walled compact welded structural parts to solve the problem that welding cannot be achieved in local positions of the frame thin-walled compact welded structural parts. Summary of the invention

[0007] In view of this, the present invention aims to propose a structural design and a process design of a frame-type thin-walled compact welded structural component to solve the problem that welding cannot be achieved at local positions of the frame-type thin-walled compact welded structural component.

[0008] Titanium alloy materials are used to replace steel materials. Due to the characteristics of the materials themselves, the welding process is quite different, and titanium alloy materials require a larger operating space. For welding in narrow spaces of equipment, since steel is welded with welding rods, the welding rods can be inserted into narrow spaces for welding, so this process can be implemented smoothly.

[0009] like Figure 1 As shown, the existing steel equipment includes the thin-walled tube 1, the corner 2, the bottom plate 3, the first reinforcing material 4, the second reinforcing material 5, the top plate 6 and the center tube 7. The welding process of the steel equipment is as follows: the thin-walled tube 1 and the corner 2 are welded → the bottom plate 3 is welded → the first reinforcing material 4 is welded → the second reinforcing material 5 is welded → the center tube 7 is welded → the top plate 6 is welded. Because steel is welded with welding rods, the welding rods can be extended into a narrow space for welding, so this process can be smoothly implemented. However, for titanium alloys, welding cannot be implemented in a narrow space. When manual TIG is used, the local operating space of the equipment is less than 400mm in diameter. For titanium alloys, welding cannot be implemented in a narrow space. This product uses manual TIG. If the above process is used, the welding operation between the center tube 7 and the bottom plate 3 and the second reinforcing material 5 cannot be achieved, which is not conducive to the guarantee of the local structural strength and stability of the equipment.

[0010] like Figure 3 As shown, the present invention is based on the external dimensions and structure of the existing steel equipment. By optimizing the structural design and process design, only local optimization and adjustment is made to the structural design. The original bottom plate 3 is decomposed into the bottom plate 3 and the sealing plate 8, and the original center tube 7 is decomposed into the center tube 7 and the center ring 9. The bottom plate 3 is decomposed into the bottom plate 3 and the sealing plate 8, with the purpose of realizing the welding of the butt weld between the center ring 9 and the center tube 7, and the center tube 7 is decomposed into the center tube 7 and the center ring 9, with the purpose of completing the assembly welding of the component in two stages. The center ring 9 is installed first, and the center tube 7 is not installed, so as to provide an operating space of about 900 mm in diameter for the internal welding of the equipment, and provide sufficient operating space for the welding operation, so as to realize manual TIG welding, and solve the problem that the local position of the thin-walled compact welded structural parts of the titanium alloy frame cannot be welded.

[0011] Titanium equipment welding process: the thin-walled tube 1 and the corner 2 are welded together → the bottom plate 3 is welded together → the first reinforcing material 4 is welded together → the second reinforcing material 5 is welded together → the center ring 9 is welded together → the center tube 7 is welded together → the sealing plate 8 is welded together → the top plate 6 is welded together. Here, the weld seam between the center tube 7 and the center ring 9 adopts a single-sided welding and double-sided forming technology.

[0012] The equipment is a thin-walled frame-type complex welded structural part with high requirements for dimensional accuracy and compact structure. It is made of titanium alloy, which is a domestic first and a technological innovation activity. The product structure involved in the present invention is a domestic first and no similar invention has been seen.

[0013] The technical solution of the present invention is achieved in this way:

[0014] The present invention discloses a structural design of a frame-type thin-walled compact welded structural member, comprising a thin-walled tube, a corner, a bottom plate, a first reinforcing material, a second reinforcing material, a top plate, a center tube, a sealing plate and a center ring, wherein the thin-walled tube, the corner and the bottom plate are welded and connected in sequence to form a thin-walled structure;

[0015] The bottom plate is provided with a first through hole for facilitating welding connection between the center tube and the center ring;

[0016] The center ring is welded to the bottom plate, and the center ring can completely cover the first through hole;

[0017] The first reinforcement material is welded to the inner wall of the thin-walled tube along the circumferential direction;

[0018] The second reinforcement material is welded to the inner wall of the thin-walled tube, the length direction of the second reinforcement material is perpendicular to the plane where the first reinforcement material is located, and one end of the second reinforcement material is welded to the outer wall of the center ring to form a frame-type welding structure;

[0019] The central tube extends into the frame-type thin-walled structure and is welded to the central ring, and the radial distance between the outer wall of the central tube and the inner wall of the thin-walled tube does not exceed 400 mm;

[0020] The sealing plate is used to seal the first through hole.

[0021] Furthermore, the wall thickness of the center ring is greater than that of the center tube, the center tube has the same inner diameter or outer diameter as that of the center ring, and the height of the center ring is greater than the height of the second reinforcement material.

[0022] Furthermore, the center ring is vertically welded to the bottom plate, and the center ring is coaxial with the first through hole.

[0023] Furthermore, the diameter of the first through hole is larger than the diameter of the sealing plate and smaller than the outer diameter of the center ring, and the diameter of the sealing plate is larger than the inner diameter of the center ring.

[0024] Furthermore, the top plate is provided at one end of the thin-walled tube away from the bottom plate, and the cross section of the top plate is annular.

[0025] Furthermore, the diameter of the end of the thin-walled tube away from the bottom plate is not less than 600 mm, and the diameter of the thin-walled tube adjacent to the bottom plate is not less than 400 mm.

[0026] Furthermore, when the inner diameter of the center ring is not greater than 400 mm, the height of the center ring is not more than 200 mm.

[0027] Furthermore, the thin-walled tube, the corner, the bottom plate, the first reinforcing material, the second reinforcing material, the top plate, the center tube, the sealing plate and the center ring are all made of titanium alloy.

[0028] Another object of the present invention is to disclose a process design for a frame-type thin-walled compact welded structural part, which is used for processing any of the above-mentioned frame-type thin-walled compact welded structural parts, and comprises the following specific steps:

[0029] S1: welding the thin-walled tube, the corner, and the bottom plate in sequence;

[0030] S2: Welding the first reinforcement material to the inner wall of the thin-walled tube along the circumferential direction;

[0031] S3: vertically arranging the second reinforcing material and the first reinforcing material, and welding the second reinforcing material to the inner wall of the thin-walled tube;

[0032] S4: welding the center ring to the bottom plate, and welding the second reinforcement material to the outer wall of the center ring;

[0033] S5: welding the center tube and the center ring through the first through hole;

[0034] S6: welding the sealing plate to the bottom plate to seal the first through hole;

[0035] S7: The top plate 9 is passed through the central tube and welded to the end of the thin-walled tube away from the bottom plate.

[0036] Furthermore, in step S5, the welding of the center tube and the center ring adopts a single-sided welding and double-sided forming technology.

[0037] Compared with the prior art, the structural design and process design of a frame-type thin-walled compact welded structural member of the present invention have the following advantages:

[0038] 1. The present invention maintains the structural size and structural characteristics of the steel equipment by performing local optimization based on the structural design of the steel equipment, provides sufficient operating space for welding operations, solves the problem that welding cannot be achieved in local positions of thin-walled and compact welded structural parts of the frame, and realizes the renewal and quality upgrade of the equipment.

[0039] 2. The present invention has a mature design and is simple to process. It can effectively ensure the structural integrity, dimensional consistency and quality stability of the equipment, and has good adaptability whether it is replacement or new production. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0041] Figure 1 Design drawings for existing steel equipment structures;

[0042] Figure 2 This is the structural design diagram of the titanium equipment of the present invention;

[0043] Figure 3 This is a cross-sectional view of the titanium equipment structure of the present invention.

[0044] 1. Thin-walled tube; 2. Corner; 3. Bottom plate; 301. First through hole; 4. First reinforcement material; 5. Second reinforcement material; 6. Top plate; 7. Center tube; 8. Closing plate; 9. Center ring. DETAILED DESCRIPTION

[0045] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0046] It should be noted that all the terms used in the present invention to indicate directionality and position, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "lower", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the components in a certain state, and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] The first object of the present invention is to disclose a structural design of a frame-type thin-walled compact welded structural member, which is used for welding titanium alloy parts in a narrow space, and comprises a thin-walled tube 1, a corner 2, a bottom plate 3, a top plate 6, a center tube 7, a sealing plate 8 and a center ring 9. The thin-walled tube 1, the corner 2 and the bottom plate 3 are welded and connected in sequence to form a thin-walled structure.

[0050] The bottom plate 3 is provided with a first through hole 301 for facilitating welding connection between the center tube 7 and the center ring 9;

[0051] The center ring 9 is welded to the bottom plate 3, and the center ring 9 can completely cover the first through hole 301;

[0052] The first reinforcement material 4 is welded to the inner wall of the thin-walled tube 1 along the circumferential direction;

[0053] The second reinforcing material 5 is welded to the inner wall of the thin-walled tube 1, and the length direction of the second reinforcing material 5 is perpendicular to the plane where the first reinforcing material 4 is located. One end of the second reinforcing material 5 is welded to the outer wall of the center ring 9 to form a frame-type welding structure;

[0054] The center tube 7 extends into the frame-type thin-walled structure and is welded to the center ring 9. The radial distance between the outer wall of the center tube 7 and the inner wall of the thin-walled tube 1 does not exceed 400 mm.

[0055] The sealing plate 8 is used to seal the first through hole 301 .

[0056] A thin-walled structure is formed by connecting the bottom plate 3, the corner 2 and the thin-walled tube 1 in sequence. The first reinforcing material 4 is welded to the inner wall of the thin-walled tube 1 along the circumferential direction. The length direction of the second reinforcing material 5 is perpendicular to the plane where the first reinforcing material 4 is located. One end of the second reinforcing material 5 is welded to the outer wall of the center ring 9 to form a frame-type welded structure. When the radial distance from the inner wall of the thin-walled tube 1 to the outer wall of the center tube 7 does not exceed 400 mm, since all parts of the frame-type thin-walled structure are made of titanium alloy or other materials, there is a problem of insufficient operating space required for the welding process. It is impossible to directly weld the second reinforcement material 5 to the center tube 7 and the center tube 7 to the base plate 3. It is necessary to design the center tube 7 and the center ring 9 separately, and the second reinforcement material 5 and the first reinforcement material 4 are vertically arranged to connect the outer wall of the center ring 9 to form a stable reinforcement structure, which significantly improves the stiffness and strength of the structural member. This design provides a larger operating space for this operation and facilitates the implementation of manual TIG welding and other welding methods. The setting of the first through hole 301 helps to weld the center tube 7 and the center ring 9, expands the welding operation space of the center tube 7 and the center ring 9, and realizes the structural optimization design in the case of narrow space for welding structural members.

[0057] This device is locally optimized based on the structural design of steel equipment. It has a mature design and simple processing, and maintains the structural size and structural characteristics of the steel equipment. It has good adaptability to both replacement and new production. It provides sufficient operating space for welding operations and solves the problem that welding cannot be achieved in local positions of thin-walled and compact welded structural parts of the frame.

[0058] Specifically, the thin-walled tube 1, the corner 2, the bottom plate 3, the first reinforcing material 4, the second reinforcing material 5, the top plate 6, the center tube 7, the sealing plate 8 and the center ring 9 are all made of titanium alloy.

[0059] This setting ensures the lightweight, corrosion-resistant, high-temperature performance and good welding performance of the structure by adopting titanium alloy materials. It is particularly suitable for application scenarios with strict requirements on weight, corrosion resistance and high-temperature performance, and has broad application prospects and significant advantages.

[0060] Specifically, the center ring 9 is vertically welded to the bottom plate 3 , and the center ring 9 is coaxial with the first through hole 301 .

[0061] The center ring 9 is coaxial with the first through hole 301, which ensures the symmetry and balance of the structure, improves the stability of the overall structure, ensures the quality of the weld, reduces welding defects, improves the strength and reliability of the welded joint, ensures the precise alignment of the center ring 9 and the first through hole 301, facilitates the insertion and welding of the center tube 7, reduces the difficulty of assembly, evenly distributes thermal stress, reduces local stress concentration, improves the durability of the structure, helps to simplify the welding process, reduces the time of alignment and positioning, and improves welding efficiency.

[0062] Specifically, the top diameter of the thin-walled tube 1 is not less than 400 mm, the height of the thin-walled tube 1 is not more than 600 mm, and the diameter of the thin-walled tube 1 near the bottom plate 3 is not less than 400 mm.

[0063] The top diameter of the thin-walled tube 1 is not less than 400 mm, which provides sufficient operating space for welding the first reinforcement material 4 and the second reinforcement material 5, helps to ensure the welding quality between the first reinforcement material 4 and the thin-walled tube 1, between the second reinforcement material 5 and the thin-walled tube 1, and between the second reinforcement material 5 and the center ring 9, and improves the stability and reliability of the structure.

[0064] The diameter of 3 places near the bottom plate is not less than 400mm: it ensures the welding operation space near the bottom, makes it easier for welders to reach the weld position, and reduces the difficulty of welding.

[0065] The height of the thin-walled tube 1 does not exceed 600 mm, which ensures the stability of the structure. A taller structure may increase the center of gravity and cause instability. The height of 600 mm ensures the rigidity of the structure while facilitating operation and transportation. The larger bottom diameter provides a wider supporting surface, enhances the stability of the structure, and reduces the risk of deformation under external loads.

[0066] This setting ensures that welders can perform welding operations conveniently, reduces welding difficulty, improves welding efficiency, and at the same time enhances the stability and rigidity of the structure.

[0067] Specifically, the height of the center ring 9 does not exceed 200 mm.

[0068] When the height of the center ring 9 does not exceed 200 mm, the welder can perform TIG welding on the center tube 7 and the center ring 9 from the first through hole 301. Through reasonable operation and parameter setting, the welding quality and structural stability can be ensured, and sufficient operating space can be ensured in the frame-type thin-walled structure for welding and connecting the center ring 9 and the second reinforcement material 5, thereby improving the reliability and stability of the structure.

[0069] Preferably, the height of the center ring 9 is in the range of 120-200 mm.

[0070] Specifically, the wall thickness of the center ring 9 is greater than that of the center tube 7 , the inner diameter or outer diameter of the center tube 7 is the same as that of the center ring 9 , and the height of the center ring 9 is greater than that of the second reinforcement material 5 .

[0071] Thicker wall thickness can provide higher structural strength and rigidity, ensuring that the center ring 9 is not easily deformed when subjected to external loads, thereby improving the stability of the entire structure. Thicker wall thickness can better disperse thermal stress, reduce the risk of thermal deformation and cracks generated during welding, facilitate docking before welding, and improve welding efficiency.

[0072] The same inner diameter or outer diameter can ensure that the butt joint surface during welding is smoother, reduce welding defects and improve welding quality. Due to the same inner diameter or outer diameter, single-sided welding and double-sided forming technology can be more easily implemented to ensure that the weld can form a good shape on both sides and improve the strength and reliability of the welded joint.

[0073] The height of the center ring 9 is greater than the height of the second reinforcement material 5, which avoids the problem of being unable to weld the center tube 7 and the second reinforcement material 5, provides additional vertical support for the second reinforcement material 5, and enhances the stability of the structure.

[0074] This setting ensures the accessibility and convenience of welding operations, helps to disperse and transfer external loads, reduces local stress concentration, and significantly improves structural stability, welding quality, material utilization efficiency, operational convenience, thermal stress distribution, and maintenance and overhaul convenience.

[0075] Specifically, the inner diameter of the center ring 9 is equal to the diameter of the first through hole 301 , and the diameter of the sealing plate 8 is not greater than the diameter of the first through hole 301 .

[0076] The inner diameter of the center ring 9 is equal to the diameter of the first through hole 301, which ensures the precise alignment of the center ring 9 with the first through hole 301, enhances the stability of the structure, helps to reduce installation errors, and improves the accuracy of the overall structure. The diameter of the sealing plate 8 is not larger than the diameter of the first through hole 301, which facilitates the welding between the sealing plate 8, the base plate 3 and the center ring 9, ensures the stability of the structure and the convenience of operation, and avoids external bulges of the base plate 3 that affect the appearance of the structure.

[0077] This arrangement achieves effective welding between the sealing plate 8, the bottom plate 3 and the center ring 9, avoids external protrusions of the bottom plate 3, helps to reduce installation errors, and improves the accuracy and aesthetics of the overall structure.

[0078] Specifically, a top plate 6 is provided on the top of the thin-walled tube 1 , and the cross section of the top plate 6 is annular.

[0079] The annular design of the top plate 6 closes the top of the thin-walled tube 1, provides structural support for the top, enhances the rigidity and stability of the overall structure, evenly distributes the load on the top, reduces local stress concentration, and improves the compressive and deformation resistance of the structure.

[0080] Another object of the present invention is to disclose a process design of a frame-type thin-walled compact welded structural member, comprising the following specific steps:

[0081] S1: Weld the thin-walled tube 1, the corner 2, and the bottom plate 3 in sequence;

[0082] S2: Welding the first reinforcement material 4 to the inner wall of the thin-walled tube 1 along the circumferential direction;

[0083] S3: The second reinforcing material 5 is arranged vertically with the first reinforcing material 4, and the second reinforcing material 5 is welded to the inner wall of the thin-walled tube 1;

[0084] S4: welding the center ring 9 to the bottom plate 3, and welding the second reinforcement material 5 to the outer wall of the center ring 9;

[0085] S5: Welding the center tube 7 and the center ring 9 from the first through hole 301;

[0086] S6: welding the sealing plate 8 to the bottom plate 3 to seal the first through hole 301;

[0087] S7: The top plate 6 is passed through the central tube 7 and welded to the end of the thin-walled tube 1 away from the bottom plate 3 .

[0088] The center ring 9 is installed first, and the center tube 7 is not installed, so that the internal space of the frame-type thin-walled structural member has a diameter of about 900 mm, which can ensure the operating space for manual TIG welding and achieve full welding between the second reinforcement material 5 and the center ring 9, and between the center ring 9 and the bottom plate 3. The setting of the first through hole 301 enables welding between the center ring 9 and the center tube 7, avoiding the problem of insufficient welding space when the center tube 7 extends into the interior of the frame-type thin-walled structural member.

[0089] This setting optimizes the structural design and process design, and performs local optimization based on the structural design of the original steel equipment, thereby maintaining the structural size and structural characteristics of the steel equipment, providing sufficient operating space for welding operations, and solving the problem that welding cannot be achieved in local locations of thin-walled and compact welded structural parts of titanium alloy frames. The structure is simple and easy to process.

[0090] Specifically, in step S5, the welding of the center tube 7 and the center ring 9 adopts a single-sided welding and double-sided forming technology.

[0091] The single-sided welding and double-sided forming technology can ensure that the weld is evenly formed on both sides. Since the weld can form a good shape on both sides, welding defects such as pores and cracks are reduced, the strength and reliability of the weld joint are improved, the quality and appearance of the weld are improved, the welding process is simplified, the time for multiple flipping and positioning is reduced, and the continuity and consistency of welding are improved.

[0092] Example 1

[0093] Structural design of a frame-type thin-walled compact welded structural component

[0094] like Figure 2-3As shown, all parts are made of titanium alloy, the inner diameter of the end of the thin-walled tube 1 away from the bottom plate 3 is greater than 950mm, the height of the thin-walled tube 1 is 600mm, the inner diameter of the center tube 7 is 230mm, the inner diameter of the outer wall of the center tube 7 away from the end of the thin-walled tube 1 away from the bottom plate 3 is 360mm, and the inner diameter of the outer wall of the center tube 7 near the end of the thin-walled tube 1 near the bottom plate 3 is 200mm.

[0095] The structure follows the steel structure design, and its structural dimensions and structural form are consistent with the steel structure. Only local optimization and adjustment are made to the structural design, and the original bottom plate 3 is decomposed into the bottom plate 3 and the sealing plate 8, and the original center tube 7 is decomposed into the center tube 7 and the center ring 9. The bottom plate 3 is decomposed into the bottom plate 3 and the sealing plate 8, the purpose of which is to realize the welding of the butt weld between the center ring 9 and the center tube 7. The center tube 7 is decomposed into the center tube 7 and the center ring 9, the purpose of which is to complete the assembly welding of the component in two stages, first installing the center ring 9, and not installing the center tube 7, to provide an operating space of about 900mm diameter for the internal welding of the equipment, which can realize manual TIG welding and solve the problem that the local position of the thin-walled compact welded structural parts of the titanium alloy frame cannot be welded.

[0096] The above are only preferred embodiments of the present invention and are 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 in the protection scope of the present invention.

Claims

1. A structural design of a frame-type thin-walled compact welded structural member, characterized in that: It comprises a thin-walled tube (1), a corner (2), a bottom plate (3), a first reinforcing material (4), a second reinforcing material (5), a top plate (6), a central tube (7), a sealing plate (8) and a central ring (9), wherein the thin-walled tube (1), the corner (2) and the bottom plate (3) are welded and connected in sequence to form a thin-walled structure; The bottom plate (3) is provided with a first through hole (301) for facilitating welding connection between the center tube (7) and the center ring (9); The center ring (9) is welded to the bottom plate (3), and the center ring (9) can completely cover the first through hole (301); The first reinforcing material (4) is welded to the inner wall of the thin-walled tube (1) along the circumferential direction; The second reinforcing material (5) is welded to the inner wall of the thin-walled tube (1), the length direction of the second reinforcing material (5) is perpendicular to the plane where the first reinforcing material (4) is located, and one end of the second reinforcing material (5) is welded to the outer wall of the center ring (9) to form a frame-type welded structure; The central tube (7) extends into the frame-type thin-walled structure and is welded to the central ring (9), and the radial distance between the outer wall of the central tube (7) and the inner wall of the thin-walled tube (1) does not exceed 400 mm; The sealing plate (8) is used to seal the first through hole (301).

2. The structural design of the frame-type thin-walled compact welded structural member according to claim 1 is characterized in that: The wall thickness of the center ring (9) is greater than that of the center tube (7); the center tube (7) and the center ring (9) have the same inner diameter or outer diameter; and the height of the center ring (9) is greater than the height of the second reinforcement material (5).

3. The structural design of the frame-type thin-walled compact welded structural member according to claim 1 is characterized in that: The center ring (9) is vertically welded to the bottom plate (3), and the center ring (9) is coaxial with the first through hole (301).

4. The structural design of the frame-type thin-walled compact welded structural member according to claim 3 is characterized in that: The diameter of the first through hole (301) is greater than the diameter of the sealing plate (8) and smaller than the outer diameter of the center ring (9); the diameter of the sealing plate (8) is greater than the inner diameter of the center ring (9).

5. The structural design of the frame-type thin-walled compact welded structural member according to claim 1 is characterized in that: The top plate (6) is provided at one end of the thin-walled tube (1) away from the bottom plate (3), and the cross section of the top plate (6) is annular.

6. The structural design of the frame-type thin-walled compact welded structural member according to claim 1 is characterized in that: The diameter of the end of the thin-walled tube (1) away from the bottom plate (3) is not less than 600 mm, and the diameter of the thin-walled tube (1) adjacent to the bottom plate (3) is not less than 400 mm.

7. The structural design of the frame-type thin-walled compact welded structural member according to claim 1 is characterized in that: When the inner diameter of the center ring (9) is not greater than 400 mm, the height of the center ring (9) is not greater than 200 mm.

8. The structural design of the frame-type thin-walled compact welded structural member according to claim 1 is characterized in that: The thin-walled tube (1), the corner (2), the bottom plate (3), the first reinforcing material (4), the second reinforcing material (5), the top plate (6), the center tube (7), the sealing plate (8) and the center ring (9) are all made of titanium alloy.

9. A process design for a frame-type thin-walled compact welded structural part, characterized in that: The structural design for processing the frame-type thin-walled compact welded structural member according to any one of claims 1 to 8 comprises the following specific steps: S1: welding the thin-walled tube (1), the corner (2), and the bottom plate (3) in sequence; S2: welding the first reinforcing material (4) to the inner wall of the thin-walled tube (1) along the circumferential direction; S3: The second reinforcing material (5) and the first reinforcing material (4) are arranged vertically, and the second reinforcing material (5) is welded to the inner wall of the thin-walled tube (1); S4: welding the center ring (9) to the bottom plate (3), and welding the second reinforcement material (5) to the outer wall of the center ring (9); S5: welding the central tube (7) and the central ring (9) from the first through hole (301); S6: welding the sealing plate (8) to the bottom plate (3) to seal the first through hole (301); S7: The top plate 9 is passed through the central tube (7) and welded to the end of the thin-walled tube (1) away from the bottom plate (3).

10. The process design of the frame type thin-walled compact welded structural member according to claim 9, characterized in that: In step S5, the welding of the central tube (7) and the central ring (9) adopts a single-sided welding and double-sided forming technology.

Images