Through-flow boiler welding joint strengthening structure

Abstract

The utility model relates to the technical field of boilers, in particular to a through-flow boiler welding joint strengthening structure which comprises a boiler side wall and a welding seam on the boiler side wall, the welding seam comprises a first welding groove, a second welding groove, a third welding groove and a fourth welding groove which are sequentially arranged from bottom to top, a first strengthening plate is welded in the first welding groove, and a second strengthening plate is welded in the fourth welding groove. A plurality of first reinforcing rods distributed at equal intervals are welded in the second welding groove, a second reinforcing plate is welded in the third welding groove, a plurality of second reinforcing rods distributed at equal intervals are welded to the lower half portion in the fourth welding groove, and a third reinforcing plate is welded to the upper half portion in the fourth welding groove. According to the through-flow boiler welding joint strengthening structure, the width and the depth of the welding grooves are designed to be gradually increased in sequence, the bearing capacity of the welding joint is greatly improved, the welding grooves can better distribute and bear stress caused by thermal stress and mechanical vibration, stress concentration points can be reduced, and therefore the overall strength and reliability of the welding joint are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler technical field, concretely is a kind of through-flow boiler welded joint reinforcing structure. BACKGROUND

[0002] As a kind of high-efficiency compact boiler, through-flow boiler has been widely used in industrial and civil fields in recent years. It provides heat energy by rapidly heating water in the pipeline to convert into steam, which has significant advantages in volume and energy utilization efficiency. The design of through-flow boiler allows it to start and shut down quickly, which is particularly important for industrial processes and building heating that require intermittent heating. However, the high-efficiency operation and compact structure of through-flow boiler also put higher requirements on the manufacturing process, especially welding technology.

[0003] In the manufacturing process of through-flow boiler, welding technology is one of the key processes, which directly relates to the safety and service life of the boiler. The structure of the boiler includes multiple welded joints, which not only need to withstand high temperature and high pressure during machine operation, but also are affected by long-term thermal cycling and mechanical vibration, and are prone to become stress and fatigue concentration areas. Any defects or failures of the welded joints can lead to a decrease in the overall strength of the boiler, and further cause serious safety accidents such as leakage and explosion.

[0004] Therefore, improving the fatigue resistance of through-flow boiler welded joints has become one of the key directions of boiler manufacturing technology development. Through innovative structural design and stress distribution optimization, the adaptability and reliability of the welded joints under complex working conditions can be improved, which can ensure the safe operation of the boiler. In view of this, we propose a through-flow boiler welded joint reinforcing structure. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a through-flow boiler welded joint reinforcing structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A through-flow boiler welded joint reinforcing structure, comprising a boiler side wall and a welded joint on the boiler side wall, the welded joint comprising a first welding groove, a second welding groove, a third welding groove and a fourth welding groove arranged in order from bottom to top, the width of the first welding groove, the second welding groove, the third welding groove and the fourth welding groove increasing in turn, by increasing the width of the weld, the carrying capacity of the joint can be effectively improved;

[0008] The first reinforcing plate is welded in the first welding groove to increase the stability at the first welding groove, the first reinforcing rods are arranged equidistantly in the second welding groove to increase the strength at the second welding groove, the second reinforcing plate is welded in the third welding groove to increase the stability at the third welding groove, the second reinforcing rods are arranged equidistantly in the lower half of the fourth welding groove to increase the strength at the fourth welding groove, and the third reinforcing plate is welded in the upper half of the fourth welding groove to increase the stability at the fourth welding groove, so that the strength and stability of the joint can be significantly improved.

[0009] Preferably, the depths of the first welding groove, the second welding groove, the third welding groove and the fourth welding groove are sequentially increased, and the inner wall of the first welding groove is in an arc structure to increase the welding surface.

[0010] Preferably, the bottom and the top of the inner wall side of the second welding groove, the third welding groove and the fourth welding groove are in a rounded corner structure to increase the welding surface.

[0011] Preferably, the first connecting weld is arranged at the edge of the top of the first reinforcing plate to improve the connecting strength of the welding material and the side wall of the boiler.

[0012] Preferably, the two ends of the first reinforcing rod are welded to the two sides of the inner wall of the second welding groove, and the bottom of the first reinforcing rod is welded to the top of the first reinforcing plate to strengthen the strength between the first welding groove and the second welding groove.

[0013] Preferably, the second connecting weld is arranged at the edge of the top of the second reinforcing plate to improve the connecting strength of the welding material and the side wall of the boiler.

[0014] Preferably, the two ends of the second reinforcing rod are welded to the two sides of the inner wall of the fourth welding groove, and the bottom of the second reinforcing rod is welded to the top of the second reinforcing plate to strengthen the strength between the third welding groove and the fourth welding groove.

[0015] Preferably, the third connecting weld is arranged at the edge of the top of the third reinforcing plate to improve the connecting strength of the welding material and the side wall of the boiler.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1、The strengthening structure of the through-flow boiler welding joint greatly improves the bearing capacity of the welding joint by sequentially increasing the width and depth of the welding grooves, and the design can not only make the welding grooves better distribute and bear the stress caused by thermal stress and mechanical vibration, but also reduce the stress concentration points, so as to improve the overall strength and reliability of the welding joint.

[0018] 2、The strengthening structure of the through-flow boiler welding joint adds different reinforcing plates and reinforcing rods in each welding groove, especially adopts the combined design of plate and rod in the fourth welding groove, which significantly increases the stability and fatigue resistance of the welding structure, and the combined structure can effectively resist the dynamic load in the operation of the boiler and ensure long-term safe operation.

[0019] 3、The strengthening structure of the through-flow boiler welding joint enhances the connection strength of the reinforcing plates and reinforcing rods and the boiler side wall through the ingenious arrangement of the connecting welds, thereby optimizing the stress transmission path, which effectively avoids the problems of material fatigue failure and weld cracking caused by excessive local stress.

[0020] 4、The strengthening structure of the through-flow boiler welding joint adopts arc-shaped inner walls and rounded corners in the design of the welding grooves, which not only increases the welding area and makes the welding more firm, but also reduces the sharp corners and stress concentration phenomena generated during welding, thereby improving the overall welding quality and durability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole first visual angle structure schematic view of the utility model;

[0022] Figure 2 It is a whole second visual angle structure schematic view of the utility model;

[0023] Figure 3 It is a whole exploded view schematic view of the utility model;

[0024] Figure 4 It is a part structure schematic view one of the utility model;

[0025] Figure 5 It is a part structure schematic view two of the utility model;

[0026] Figure 6 It is an assembly structure schematic view of the boiler side wall and the first reinforcing plate in the utility model;

[0027] In the figure: 1, boiler side wall; 10, first welding groove; 11, second welding groove; 12, third welding groove; 13, fourth welding groove; 2, first reinforcing plate; 3, first reinforcing rod; 4, second reinforcing plate; 5, second reinforcing rod; 6, third reinforcing plate; 7, first connecting weld; 8, second connecting weld; 9, third connecting weld. DETAILED DESCRIPTION

[0028] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0030] Please refer to Figures 1-6 The utility model provides a technical scheme:

[0031] A kind of strengthening structure of welded joint of tubular boiler, including boiler side wall 1, and welded joint on the boiler side wall 1, welded joint includes first welding groove 10, second welding groove 11, third welding groove 12 and fourth welding groove 13 arranged sequentially from bottom to top, the width of first welding groove 10, second welding groove 11, third welding groove 12 and fourth welding groove 13 gradually increases, by increasing the width of weld, the carrying capacity of joint can be effectively improved;

[0032] First welding groove 10 is welded with first reinforcing plate 2, increases the stability at first welding groove 10, second welding groove 11 is welded with multiple equidistantly arranged first reinforcing rod 3, increases the strength at second welding groove 11, third welding groove 12 is welded with second reinforcing plate 4, increases the stability at third welding groove 12, the lower half portion inside fourth welding groove 13 is welded with multiple equidistantly arranged second reinforcing rod 5, increases the strength at fourth welding groove 13, the upper half portion inside fourth welding groove 13 is welded with third reinforcing plate 6, increases the stability at fourth welding groove 13, so as to be able to significantly improve the strength and stability of joint.

[0033] In the embodiment, the depth of first welding groove 10, second welding groove 11, third welding groove 12 and fourth welding groove 13 gradually increases, the inner wall of first welding groove 10 is arc structure, increases welding surface.

[0034] Specifically, the bottom and top of the inner wall side of the second welding groove 11, the third welding groove 12 and the fourth welding groove 13 are all rounded structures, which increases the welding surface.

[0035] Further, the first connecting weld 7 is arranged at the edge of the top of the first reinforcing plate 2, which improves the connecting strength of the welding material and the boiler side wall 1.

[0036] Further, the two ends of the first reinforcing rod 3 are welded to the two sides of the inner wall of the second welding groove 11, and the bottom of the first reinforcing rod 3 is welded to the top of the first reinforcing plate 2, which strengthens the strength between the first welding groove 10 and the second welding groove 11.

[0037] Further, the second connecting weld 8 is arranged at the edge of the top of the second reinforcing plate 4, which improves the connecting strength of the welding material and the boiler side wall 1.

[0038] Further, the two ends of the second reinforcing rod 5 are welded to the two sides of the inner wall of the fourth welding groove 13, and the bottom of the second reinforcing rod 5 is welded to the top of the second reinforcing plate 4, which strengthens the strength between the third welding groove 12 and the fourth welding groove 13.

[0039] Further, the third connecting weld 9 is arranged at the edge of the top of the third reinforcing plate 6, which improves the connecting strength of the welding material and the boiler side wall 1.

[0040] In use, the first reinforcing plate 2 is welded in the first welding groove 10 to improve the stability of the position; a plurality of first reinforcing rods 3 are welded in the second welding groove 11 at equal distances to realize reinforcing welding of the position; the second reinforcing plate 4 is welded in the third welding groove 12 to increase the stability of the connecting point; a plurality of second reinforcing rods 5 are welded in the lower half of the fourth welding groove 13 to strengthen the welding strength of the section; the third reinforcing plate 6 is welded in the upper part of the fourth welding groove 13 to ensure the stability of the overall structure; and the first connecting weld 7, the second connecting weld 8 and the third connecting weld 9 are applied between the reinforcing plate and the boiler side wall 1 to improve the bonding strength between the structures, so that the use of the welding joint reinforcing structure can effectively improve the structural strength, stability and service life of the tubular boiler, thereby ensuring the safety of the tubular boiler in efficient operation.

[0041] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A reinforcing structure of a welded joint of a once-through boiler, comprising a boiler side wall (1) and a weld seam on the boiler side wall (1), characterized in that: The welding seam comprises a first welding groove (10), a second welding groove (11), a third welding groove (12) and a fourth welding groove (13) arranged in sequence from bottom to top, the first welding groove (10) is welded with a first reinforcing plate (2), the second welding groove (11) is welded with a plurality of first reinforcing rods (3) arranged at equal intervals, the third welding groove (12) is welded with a second reinforcing plate (4), the lower half of the fourth welding groove (13) is welded with a plurality of second reinforcing rods (5) arranged at equal intervals, and the upper half of the fourth welding groove (13) is welded with a third reinforcing plate (6).

2. A penetration boiler welded joint reinforcement structure according to claim 1, characterised in that: The depths of the first welding groove (10), the second welding groove (11), the third welding groove (12) and the fourth welding groove (13) increase in sequence, and the inner wall of the first welding groove (10) is in an arc structure.

3. The penetration boiler welded joint reinforcement structure according to claim 1, characterized in that: The bottom and top of the inner wall side of the second welding groove (11), the third welding groove (12) and the fourth welding groove (13) are both in a rounded corner structure.

4. The penetration boiler welded joint reinforcement structure according to claim 1, characterised in that: The edge of the top of the first reinforcing plate (2) is provided with a first connecting welding seam (7).

5. The penetration boiler welded joint reinforcement structure according to claim 1, characterized in that: Both ends of the first reinforcing rod (3) are welded to the two sides of the inner wall of the second welding groove (11), and the bottom of the first reinforcing rod (3) is welded to the top of the first reinforcing plate (2).

6. A penetration boiler welded joint reinforcement structure according to claim 1, characterised in that: The edge of the top of the second reinforcing plate (4) is provided with a second connecting welding seam (8).

7. A penetration boiler welded joint reinforcement structure according to claim 1, characterised in that: Both ends of the second reinforcing rod (5) are welded to the two sides of the inner wall of the fourth welding groove (13), and the bottom of the second reinforcing rod (5) is welded to the top of the second reinforcing plate (4).

8. A penetration boiler welded joint reinforcement structure according to claim 1, characterised in that: The edge of the top of the third reinforcing plate (6) is provided with a third connecting welding seam (9).

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