Boiler large-scale heating surface vertical method auxiliary device
By designing a boiler's large-scale vertical method auxiliary device, the lifting system and counterpart fixture can achieve stable lifting and accurate counterpart of the lower heated surface, the problems of long occupation time of large-scale machinery and inaccurate adjustment of weld gaps in the prior art are solved. Improves welding operation efficiency and quality.
Patent Information
- Application Number
- CN202323665988.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-29
AI Technical Summary
When installing the boiler heating surface, the existing technology has problems such as long occupation of large machinery, inaccurate adjustment of weld gaps, and affected welding quality.
A boiler large-scale vertical method auxiliary device for heating surfaces is designed, including a lifting system and a counterpart fixture. The lower heating surface is stably lifted through the lifting system, and the counterpart fixture and guide rod are used to achieve accurate alignment and fine adjustment of the upper and lower pipe openings.
The stable improvement and accurate counterpart of the lower heating surface are achieved, the dependence on large machinery is reduced, the flexibility and accuracy of welding spacing adjustment are improved, and the operation efficiency and quality are improved.
Smart Images
Figure CN222503806U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of boiler heating surface installation, in particular to a vertical auxiliary device for a large boiler heating surface. Background Art
[0002] At present, when installing the heating surface of the boiler, the order from top to bottom is usually adopted, that is, after the upper heating surface is fixed to the top plate beam by the hanger, the lower heating surface is lifted by the lifting machinery, so that the weld gap between the upper pipe of the lower heating surface and the lower pipe of the upper heating surface reaches the butt welding condition. The heating surface pipeline is generally composed of dozens of pipes. It takes at least 24 hours to complete the welding and unhook the crane, which causes the long-term occupation of large machinery and other surrounding lifting work cannot be carried out. At the same time, there are also problems such as low accuracy of weld gap adjustment and welding quality being easily affected by large machinery. Due to the use of electric mechanical pulley structure and large inertia caused by the heavy weight of the hook itself when controlling large machinery, shaking and sudden lifting will occur when adjusting the weld spacing between the upper and lower heating surfaces, so that the gap cannot meet the requirements of fine adjustment, affecting the efficiency of workers in matching the heating surface pipe rows. The weld gap is an important factor affecting the welding quality. Too large or too small will directly affect the weld quality. Utility Model Content
[0003] The utility model aims to solve the problems existing in the prior art and provide a vertical auxiliary device for a large heating surface of a boiler, which can realize stable lifting and accurate alignment of the lower heating surface and improve operating efficiency and quality.
[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:
[0005] A vertical auxiliary device for a large heating surface of a boiler comprises a lifting system arranged between an upper heating surface and a lower heating surface and a matching clamp for aligning a lower pipe opening of the upper heating surface with an upper pipe opening of the lower heating surface, a plurality of guide rods are arranged in a circular array at both upper and lower ends of the matching clamp, one end of the guide rod is detachably connected to the matching clamp or an angle between the guide rod and the axis line of the matching clamp is adjustable, the guide rod extends obliquely toward the outside of the matching clamp and then extends vertically away from the matching clamp, an upper ear plate for connecting to the lifting system is arranged on the upper heating surface, and a lower ear plate for connecting to the lifting system is arranged on the lower heating surface.
[0006] Preferably, the guide rod is fixed to the matching fixture by screws.
[0007] Preferably, the lifting system includes several groups of lifting mechanisms arranged in sequence from left to right, each lifting mechanism includes two chain hoists, and one chain hoist is located at the front side of the upper heating surface, and the other chain hoist is located at the rear side of the upper heating surface.
[0008] Preferably, the upper ear plate and the lower ear plate are both L-shaped plates.
[0009] Compared with the prior art, the beneficial effects of the present invention are:
[0010] 1. Strong applicability, easy installation, reduced dependence on large machinery, and reduced machinery costs. The utility model can be installed at any part of the heating surface. Through the lifting system, the lower heating surface can be lifted to the interface with the upper heating surface, and then the upper and lower pipe openings can be accurately aligned through the matching clamps to start the assembly work, avoiding the inconvenience of the hook rotating inside the furnace of large machinery during the construction stage and the cost of long-term occupation of large machinery.
[0011] 2. The welding distance between the upper heating surface and the lower heating surface can be adjusted flexibly with high accuracy. The utility model is equipped with multiple lifting mechanisms, and the operator mainly adjusts the position of the lower heating surface through the chain hoist. Due to the characteristics of the chain hoist ring chain structure, the welding distance between the heating surfaces is continuously adjusted, and can be fine-tuned according to the needs of the weld, thereby improving the efficiency and quality of the welding operation.
[0012] 3. The utility model is a detachable and recyclable component, which can be disassembled and recycled after use for subsequent reuse in subsequent units. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 yes Figure 1 Side view of
[0015] Figure 3 This is a schematic diagram of the structure of the matching fixture;
[0016] Figure 4 It is a use flow chart of the utility model.
[0017] Numbers in the attached drawings: 1. Upper heating surface; 2. Lower heating surface; 3. Matching fixture; 4. Guide rod; 5. Upper ear plate; 6. Lower ear plate; 7. Lifting system. DETAILED DESCRIPTION
[0018] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.
[0019] Example: As attached Figure 1-4 As shown, the utility model is a vertical auxiliary device for a large heating surface of a boiler, including a lifting system 7 arranged between an upper heating surface 1 and a lower heating surface 2 and a matching clamp 3 for aligning the lower end pipe opening of the upper heating surface 1 with the upper end pipe opening of the lower heating surface 2.
[0020] A plurality of guide rods 4 are provided in a circular array at both the upper and lower ends of the mating fixture 3, one end of the guide rod 4 is detachably connected to the mating fixture 3 or the angle between the guide rod 4 and the axis line of the mating fixture 3 is adjustable, and sockets compatible with the guide rod 4 can be provided at the upper and lower ends of the mating fixture 3, and the guide rod 4 is inserted into the sockets and fixed, and after use, the guide rod 4 is taken out of the sockets; a movable shaft can also be welded at the end of the guide rod 4, and a connecting sleeve compatible with the movable shaft can be welded on the mating fixture 3, and screws are provided on the connecting sleeve, and the movable shaft is locked in the connecting sleeve by the screws, and the angle between the guide rod 4 and the axis line of the mating fixture 3 can be adjusted by loosening the screws.
[0021] The guide rod 4 extends obliquely toward the outside of the counterpart clamp 3 and then extends vertically away from the counterpart clamp 3. The truncated cone-shaped space surrounded by a plurality of guide rods 4 provides guidance for the alignment of the lower end pipe opening of the upper heating surface 1 and the upper end pipe opening of the lower heating surface 2.
[0022] An upper ear plate 5 for connecting to a lifting system 7 is provided on the upper heating surface 1 , and a lower ear plate 6 for connecting to the lifting system 7 is provided on the lower heating surface 2 .
[0023] Preferably, the lifting system 7 includes several groups of lifting mechanisms arranged in sequence from left to right, each lifting mechanism includes two chain hoists, and one chain hoist is located at the front side of the upper heating surface 1, and the other chain hoist is located at the rear side of the upper heating surface 1.
[0024] Preferably, the upper ear plate 5 and the lower ear plate 6 are both L-shaped plates.
[0025] The upper heating surface 1 and the upper ear plate 5 are connected by welding. The upper ear plate 5 is welded to the steel plate between the tubes of the upper heating surface 1, and a chain hoist is placed on the upper ear plate 5.
[0026] The lower heating surface 2 and the lower ear plate 6 are welded to each other. The lower ear plate 6 is welded to the steel plate between the pipes of the lower heating surface 2 , and the force hook of the chain hoist is hung on the lower ear plate 6 .
[0027] The upper ear plate 5 and the lower ear plate 6 are both L-shaped and can prevent the upper and lower hooks of the chain hoist from being unhooked.
[0028] When in use, the construction personnel operate the chain hoist to pull the lower heating surface 2 upward. When the upper end pipe mouth of the lower heating surface 2 is close to the lower end pipe mouth of the upper heating surface 1, a matching clamp 3 is placed between each upper and lower end pipe mouth. While the lower heating surface 2 is gradually lifted upward by the lifting system 7, the upper and lower end pipe mouths are gradually aligned under the action of the matching clamp 3. When the distance between the upper and lower end pipe mouths and the matching clamp 3 is extremely small, the lifting system is stopped; the guide rod 4 on one side is removed, or the screws on one side are removed, and the matching clamp 3 is removed from between the upper and lower end pipe mouths. At this time, the center deviation of the upper and lower end pipe mouths has reached the standard requirement, and the lifting system can continue to operate to adjust the upstream and downstream port gaps until the welding operation needs are met.
Claims
1. A vertical auxiliary device for a large heating surface of a boiler, characterized in that: The invention comprises a lifting system (7) arranged between an upper heating surface (1) and a lower heating surface (2) and a matching clamp (3) for aligning the lower end pipe opening of the upper heating surface (1) with the upper end pipe opening of the lower heating surface (2); a plurality of guide rods (4) are arranged in a circular array at both upper and lower ends of the matching clamp (3); one end of the guide rod (4) is detachably connected to the matching clamp (3) or the angle between the guide rod (4) and the axis of the matching clamp (3) is adjustable; the guide rod (4) extends obliquely toward the outside of the matching clamp (3) and then extends vertically in a direction away from the matching clamp (3); an upper ear plate (5) for connecting to the lifting system (7) is arranged on the upper heating surface (1), and a lower ear plate (6) for connecting to the lifting system (7) is arranged on the lower heating surface (2).
2. A vertical auxiliary device for large heating surface of boiler according to claim 1, characterized in that: The guide rod (4) is fixed on the matching fixture (3) by means of screws.
3. A vertical auxiliary device for large heating surface of boiler according to claim 1, characterized in that: The lifting system (7) comprises a plurality of lifting mechanisms arranged in sequence from left to right, each lifting mechanism comprising two chain hoists, one of the chain hoists being located at the front side of the upper heating surface (1) and the other chain hoist being located at the rear side of the upper heating surface (1).
4. A vertical auxiliary device for large heating surface of boiler according to claim 1, characterized in that: The upper ear plate (5) and the lower ear plate (6) are both L-shaped plates.