Welding clamping device for coiled tube heat exchanger

Abstract

The utility model relates to the field of serpentine tube heat exchanger processing technology, concretely to a kind of serpentine tube heat exchanger welding clamping equipment, including support sheet and serpentine tube, the quantity of serpentine tube is provided with several, positioning mechanism is arranged on the support sheet, the positioning mechanism includes connecting block, positioning assembly symmetrically installed on the upper and lower ends of connecting block, clamping assembly symmetrically installed on the left and right ends of connecting block, stroke cylinder being arranged between positioning assembly and connecting block, and adjusting screw rod being arranged between clamping assembly and connecting block, the clamping structure of the fixed plate and sliding plate formed by positioning assembly half-round, in combination with the sliding adjustment mechanism driven by clamping screw rod, serpentine tube can be closely fitted and stably clamped, effectively limit the transverse spacing variation between serpentine tube in welding process, avoid the welding defects caused by spacing deviation, significantly improve welding accuracy and heat exchanger structure stability.

Description

Technical Field

[0001] This utility model relates to the field of serpentine tube heat exchanger processing technology, specifically a serpentine tube heat exchanger welding and clamping equipment. Background Technology

[0002] When manufacturing heat exchangers, serpentine tubes need to be welded onto support plates. Before welding the serpentine tubes to the support plates, multiple serpentine tubes need to be assembled and positioned in the appropriate position on the support plates. Due to the influence of gravity and external forces, relative misalignment can easily occur between the serpentine tubes and the support plates during welding, which not only affects the welding quality of the serpentine tubes but also affects the heat exchange efficiency of the heat exchanger.

[0003] To address the issue of relative misalignment between the serpentine tubes and support plates during welding, Chinese Patent Publication No. CN222404135U discloses a heat exchanger welding clamping device, specifically relating to the field of heat exchanger welding technology. The device includes several serpentine tubes located within a heat exchanger, with support plates sleeved around the serpentine tubes. The clamping device includes a detachable clamping bracket at the edge of the support plate, a rotating adjusting element mounted on the clamping bracket, and the clamping bracket fixedly mounted at the edge of the support plate via the adjusting element. A rotatable telescopic mechanism is mounted on the inner surface of the clamping bracket, with one end extending towards the serpentine tubes. A positioning plate that abuts against the serpentine tubes is mounted at the other end of the telescopic mechanism. This prior art can prevent the serpentine tubes from detaching from the support plates during the processing of the serpentine tube heat exchanger, improving the processing efficiency and the quality of the finished product. In the above scheme, the angle between the serpentine tube and the support plate is calibrated and positioned by the positioning plate, so that the serpentine tube and the welding device maintain the welding angle between them during welding, and avoid the support plate from tilting or shifting during the welding process. However, the positioning plate does not limit the spacing between the serpentine tubes, and the serpentine tube will shift laterally when welding with the support plate, which will affect the welding quality. Therefore, we propose a welding clamping device for serpentine tube heat exchangers. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a welding and clamping device for a serpentine tube heat exchanger, including a support plate and a serpentine tube. The number of serpentine tubes is set to a certain extent. A positioning mechanism is provided on the support plate. The positioning mechanism includes a connecting block, positioning components symmetrically installed at the upper and lower ends of the connecting block, engaging components symmetrically installed at the left and right ends of the connecting block, a stroke cylinder disposed between the positioning components and the connecting block, and an adjusting screw disposed between the engaging components and the connecting block. The positioning components engage with the serpentine tubes, and the engaging components engage with the support plate.

[0005] In some embodiments, the engaging assembly includes an inner engaging plate, an outer engaging plate, and engaging bolts for connecting the inner engaging plate and the outer engaging plate, the engaging bolts being disposed on the side away from the support plate.

[0006] In some embodiments, the inner locking plate is connected to the adjusting screw, and a rotating sleeve is provided between the inner locking plate and the adjusting screw, the rotating sleeve being threadedly connected to the adjusting screw.

[0007] In some embodiments, the positioning component includes a positioning plate and clamping components, wherein a plurality of clamping components are provided, and the plurality of clamping components are linearly and equidistantly distributed on the top of the positioning plate.

[0008] In some embodiments, the clamping component includes a fixing plate fixed to the top surface of the positioning plate and a sliding plate mounted on the top of the positioning plate, the sliding plate slidingly engaging with the positioning plate, and a slider fixed to the bottom of the sliding plate.

[0009] In some embodiments, a clamping screw is provided between the plurality of sliders, the clamping screw is threadedly connected to the plurality of sliders, the clamping screw is mounted on a positioning plate, one end of the clamping screw is provided with a clamping gear, and a drive motor is mounted on the positioning plate.

[0010] In some embodiments, the inner surfaces of the fixing plate and the sliding plate are inwardly curved semicircles.

[0011] This utility model has at least the following beneficial effects: This invention utilizes a clamping structure formed by a semi-circular fixed plate and a sliding plate in the positioning assembly, combined with a sliding adjustment mechanism driven by a clamping screw. This structure can tightly and stably clamp the serpentine tube, effectively limiting the lateral spacing changes between the serpentine tubes during welding, avoiding welding defects caused by spacing deviation, and significantly improving welding accuracy and heat exchanger structural stability.

[0012] This invention, through the cooperation of the locking assembly and the adjusting screw, can adjust the overall position of the positioning mechanism laterally. Combined with the vertical drive of the stroke cylinder, it can achieve precise fine-tuning of the relative position of the serpentine tube and the support plate. It can quickly complete the initial positioning and can be flexibly adjusted according to the specific welding process requirements, ensuring the accuracy of the welding angle and position, and improving the applicability of the equipment and the consistency of welding quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning mechanism of this utility model; Figure 3 This is a schematic diagram of the snap-fit ​​assembly structure of this utility model; Figure 4 This is a schematic diagram of the positioning component structure of this utility model.

[0014] In the diagram: 1-Serpentine tube; 2-Support plate; 3-Positioning mechanism; 31-Positioning component; 311-Fixing plate; 312-Sliding plate; 313-Positioning plate; 314-Slider; 315-Clamping screw; 316-Drive motor; 317-Clamping gear; 32-Connecting block; 33-Clamping component; 331-Rotating sleeve; 332-Inner clamping plate; 333-Clamping bolt; 334-Outer clamping plate; 34-Adjusting screw; 35-Stroke cylinder. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figure 1-4 This utility model provides a technical solution: a welding and clamping device for a serpentine tube heat exchanger, including a support plate 2 and a serpentine tube 1, wherein the number of serpentine tubes 1 is set to a certain extent, a positioning mechanism 3 is provided on the support plate 2, the positioning mechanism 3 includes a connecting block 32, a positioning component 31 symmetrically installed at the upper and lower ends of the connecting block 32, a locking component 33 symmetrically installed at the left and right ends of the connecting block 32, a stroke cylinder 35 disposed between the positioning component 31 and the connecting block 32, and an adjusting screw 34 disposed between the locking component 33 and the connecting block 32, wherein the positioning component 31 is locked with a certain number of serpentine tubes 1, and the locking component 33 is locked with the support plate 2; The support plate 2 serves as the mounting base for the serpentine tube 1, providing structural support and ensuring the stability of the serpentine tube 1 during the welding process. The support plate 2 provides a positioning reference for the serpentine tube 1, and through the clamping and adjustment of the positioning mechanism 3, precise welding between the serpentine tube 1 and the support plate 2 can be achieved. The core functional module of the positioning mechanism 3 is responsible for clamping, positioning and fine-tuning the position of the serpentine tube 1. It consists of a connecting block 32, a positioning component 31, a locking component 33, a stroke cylinder 35 and an adjusting screw 34. It is fixed to the support plate 2 by the locking component 33, and achieves precise adjustment in the horizontal and vertical directions by combining the adjusting screw 34 and the stroke cylinder 35. Finally, the positioning component 31 clamps the serpentine tube 1. The engaging assembly 33 includes an inner engaging plate 332, an outer engaging plate 334, and engaging bolts 333 for connecting the inner engaging plate 332 and the outer engaging plate 334. The engaging bolts 333 are located on the side away from the support piece 2. The inner locking plate 332 is connected to the adjusting screw 34, and a rotating sleeve 331 is provided between the inner locking plate 332 and the adjusting screw 34. The rotating sleeve 331 is threadedly connected to the adjusting screw 34. The locking assembly 33 fixes the positioning mechanism 3 on the support plate 2 and allows for lateral position adjustment. The inner locking plate 332 and the outer locking plate 334 are placed on both sides of the support plate 2. The locking bolt 333 is rotated to reduce the gap and is fixed on the support plate 2 by friction. The rotating sleeve 331 is threadedly connected to the adjusting screw 34. When the sleeve is rotated, the connecting block 32 moves laterally relative to the support plate 2 to adjust the initial position of the positioning assembly 31. The adjusting screw 34 and the rotating sleeve 331 realize the lateral fine adjustment of the positioning mechanism 3. When the rotating sleeve 331 rotates, it generates a relative displacement with the adjusting screw 34, which drives the connecting block 32 to slide laterally, so that the positioning component 31 is aligned with the serpentine tube 1. The positioning component 31 includes a positioning plate 313 and clamping components. The number of clamping components is set to a certain extent, and the clamping components are linearly and equidistantly distributed on the top of the positioning plate 313. The positioning component 31 vertically positions and clamps the serpentine tube 1, limiting its lateral displacement. The stroke cylinder 35 pushes the positioning plate 313 up and down, so that the clamping component contacts the serpentine tube 1, completing the initial fixation. The drive motor 316 drives the clamping screw 315 to rotate through the clamping gear 317. The slider 314 drives the sliding plate 312 to move towards the fixed plate 311, and the semi-circular inner wall fits against the serpentine tube 1 to achieve stable clamping. The clamping component includes a fixing plate 311 fixed to the top surface of the positioning plate 313, and a sliding plate 312 installed on the top of the positioning plate 313. The sliding plate 312 is slidably engaged with the positioning plate 313, and a slider 314 is fixed to the bottom of the sliding plate 312. A clamping screw 315 is provided between several sliders 314. The clamping screw 315 is threadedly connected to several sliders 314. The clamping screw 315 is installed on the positioning plate 313. A clamping gear 317 is provided at one end of the clamping screw 315. A drive motor 316 is installed on the positioning plate 313. The slider 314 and the clamping screw 315 transmit the power of the drive motor 316 to achieve precise movement of the sliding plate 312. When the clamping screw 315 rotates, the slider 314 moves along the screw axis, causing the sliding plate 312 to clamp or release the serpentine tube 1. The stroke cylinder 35 provides vertical power, adjusts the height of the positioning component 31, and pushes the positioning plate 313 up and down through telescopic movement, so that the clamping component contacts the serpentine tube 1, completing the initial vertical positioning. The drive motor 316 and the clamping gear 317 provide power to the clamping components to achieve automated clamping. The drive motor 316 drives the clamping screw 315 to rotate through the clamping gear 317, thereby controlling the moving distance and clamping force of the sliding plate 312. Place the serpentine tube 1 on the support plate 2, and fix the positioning mechanism 3 to the edge of the support plate 2 by the locking assembly 33. Rotate the rotating sleeve 331 to adjust the lateral position of the positioning assembly 31 so that it is roughly aligned with the serpentine tube 1. Start the stroke cylinder 35 to push the positioning assembly 31 to move upward, contact the serpentine tube 1 and complete the initial fixation. Drive the motor 316 to drive the clamping screw 315 to rotate, and the sliding plate 312 clamps the serpentine tube 1 to limit its lateral displacement. According to the welding requirements, further fine-tune the relative position of the serpentine tube 1 and the support plate 2 by the stroke cylinder 35 and the adjusting screw 34 to ensure welding accuracy. Combine the lateral adjusting screw 34 and the vertical stroke cylinder 35 adjustment to adapt to different welding process requirements. Example

[0017] Based on Embodiment 1, this utility model provides a technical solution: a welding and clamping device for a serpentine tube heat exchanger, wherein the inner surfaces of the fixed plate 311 and the sliding plate 312 are inwardly semi-circular. The fixed plate 311 directly contacts and clamps the serpentine tube 1 with the sliding plate 312 to prevent lateral displacement. The semi-circular inner wall fits the outer contour of the serpentine tube 1 to enhance clamping stability. The semi-circular clamping surface and screw drive design effectively prevent the serpentine tube 1 from sliding laterally, improving welding quality. The modular structure can be adapted to different specifications of serpentine tube 1 and support plate 2, making it highly versatile. When the device is working, firstly, several serpentine tubes 1 to be welded are passed through and initially placed on the support plate 2. The positioning mechanism 3 is installed on the support plate 2, and the locking components 33 at its left and right ends are locked with the support plate 2. Specifically, the inner locking plate 332 and the outer locking plate 334 are placed on both sides of the support plate 2. The locking bolt 333 is rotated to reduce the distance between the inner locking plate 332 and the outer locking plate 334 and to fit tightly against the support plate 2. The friction between the inner locking plate 332 and the outer locking plate 334 and the surface of the support plate 2 is used to fix the locking components 33 on both sides of the support plate 2. After the locking assembly 33 is fixed, rotate the rotating sleeve 331 on it. The rotating sleeve 331 is threadedly connected to the adjusting screw 34. Since the inner locking plate 332 is fixed on the support plate 2, as the rotating sleeve 331 rotates, the connecting block 32 will slide left and right relative to the support plate 2. By rotating and adjusting the rotating sleeve 331 on both sides of the locking assembly 33, the positions of several clamping components on the positioning plates 313 on the upper and lower sides of the connecting block 32 are approximately corresponding to several of the serpentine tubes 1. At this time, the stroke cylinder 35 is activated so that the positioning components 31 on the upper and lower sides contact the serpentine tube 1. After reaching the preset position, the initial fixation of the serpentine tube 1 in the vertical direction is completed. At this time, the drive motor 316 is started, which drives the clamping gear 317 to rotate, which in turn drives the clamping screw 315 to rotate, thereby causing the slider 314 to slide the sliding plate 312 on it. The sliding plate 312 slides toward the fixed plate 311 and clamps the serpentine tube 1. Since both the sliding plate 312 and the fixed plate 311 are semi-circular, the serpentine tube 1 can be stably clamped. After the serpentine tube 1 is clamped, the stroke cylinder 35 and the rotating sleeve 331 can be adjusted again according to the welding requirements to fine-tune the relative position between the serpentine tube 1 and the support plate 2, which facilitates the subsequent welding process and improves the welding quality.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding and clamping device for a serpentine tube heat exchanger, comprising a support plate (2) and a serpentine tube (1), wherein the number of serpentine tubes (1) is arranged in a plurality, characterized in that: The support plate (2) is provided with a positioning mechanism (3). The positioning mechanism (3) includes a connecting block (32), positioning components (31) symmetrically installed at the upper and lower ends of the connecting block (32), engaging components (33) symmetrically installed at the left and right ends of the connecting block (32), a stroke cylinder (35) disposed between the positioning component (31) and the connecting block (32), and an adjusting screw (34) disposed between the engaging component (33) and the connecting block (32). The positioning component (31) engages with several of the serpentine tubes (1), and the engaging component (33) engages with the support plate (2).

2. The welding and clamping equipment for serpentine tube heat exchangers according to claim 1, characterized in that: The engaging assembly (33) includes an inner engaging plate (332), an outer engaging plate (334), and engaging bolts (333) for connecting the inner engaging plate (332) and the outer engaging plate (334), the engaging bolts (333) being disposed on the side away from the support piece (2).

3. The welding and clamping equipment for serpentine tube heat exchangers according to claim 2, characterized in that: The inner locking plate (332) is connected to the adjusting screw (34), and a rotating sleeve (331) is provided between the inner locking plate (332) and the adjusting screw (34), and the rotating sleeve (331) is threadedly connected to the adjusting screw (34).

4. The welding and clamping equipment for serpentine tube heat exchangers according to claim 1, characterized in that: The positioning component (31) includes a positioning plate (313) and clamping components. The number of clamping components is set to a plurality, and the plurality of clamping components are linearly and equidistantly distributed on the top of the positioning plate (313).

5. The welding and clamping equipment for serpentine tube heat exchangers according to claim 4, characterized in that: The clamping component includes a fixing plate (311) fixed to the top surface of the positioning plate (313) and a sliding plate (312) mounted on the top of the positioning plate (313). The sliding plate (312) is slidably engaged with the positioning plate (313), and a slider (314) is fixed to the bottom of the sliding plate (312).

6. The welding and clamping equipment for serpentine tube heat exchangers according to claim 5, characterized in that: A clamping screw (315) is provided between several of the sliders (314), the clamping screw (315) is threadedly connected to several of the sliders (314), the clamping screw (315) is mounted on the positioning plate (313), a clamping gear (317) is provided at one end of the clamping screw (315), and a drive motor (316) is mounted on the positioning plate (313).

7. The welding and clamping equipment for serpentine tube heat exchangers according to claim 5, characterized in that: The inner surfaces of the fixed plate (311) and the sliding plate (312) are inwardly curved semicircles.

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