Assembling and clamping device for heat transfer tube of heat exchanger

Abstract

The invention discloses a heat exchanger heat transfer tube assembling and clamping device, and relates to the technical field of heat exchanger assembling, the heat exchanger heat transfer tube assembling and clamping device comprises a mounting base, a through opening is formed in the mounting base, clamping mechanisms are symmetrically arranged on the two sides of the top end of the mounting base, and synchronous linkage control between the two clamping mechanisms is achieved through a bidirectional driving air cylinder. The clamp is accurate and stable in clamping and capable of effectively protecting the heat transfer tube, and the problems that a traditional clamp is inaccurate in positioning and prone to damage workpieces are solved. The device adopts a bidirectional driving cylinder to synchronously control two groups of clamping mechanisms, so that the actions of clamping blocks on two sides are ensured to be completely consistent, the clamping symmetry and coaxiality of the heat transfer tube are ensured, and the assembly deviation is effectively avoided; the arc-shaped grooves of the clamping blocks are precisely matched with the outer circle of the heat transfer tube, and the anti-skid lines on the inner wall obviously enhance the friction force between the clamping blocks and the heat transfer tube, prevent the heat transfer tube from sliding in the assembling process, buffer the clamping pressure and avoid scratching or indentation on the surface of the heat transfer tube.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger assembly technology, and more specifically, to a heat exchanger heat transfer tube assembly clamping device. Background Technology

[0002] As a key piece of equipment in many fields such as chemical engineering, energy, and refrigeration, the heat exchanger's core component, the heat transfer tube, directly determines its heat transfer efficiency, sealing performance, and overall service life. During the heat transfer tube assembly process, precise clamping and positioning of the tubes are required to ensure that the assembly tolerances with components such as tube sheets and baffles strictly conform to design standards. This is a crucial prerequisite for ensuring the stable operation of the heat exchanger.

[0003] In existing technologies, heat transfer tube assembly clamping largely relies on traditional clamps, such as manual vises and simple chucks. These devices have several significant drawbacks: They lack a precise control mechanism for clamping force; insufficient force can cause displacement of the heat transfer tube during assembly, while excessive force can damage and deform the tube surface, affecting heat transfer performance and sealing effectiveness; insufficient clamping symmetry makes it difficult to ensure coaxiality between the heat transfer tube axis and the assembly reference, easily leading to assembly deviations and increasing the difficulty of subsequent debugging; the operation method is mainly manual adjustment, which is inefficient, difficult to adapt to batch assembly needs, and labor-intensive; and it has poor versatility, requiring the use of specialized clamps for heat transfer tubes of different diameters and lengths, increasing production costs and extending assembly preparation time. Currently, there are no effective solutions to these problems.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] To address the problems in related technologies, this invention proposes a heat exchanger heat transfer tube assembly clamping device to overcome the technical problems of inaccurate positioning, uncontrolled force, low efficiency and poor versatility in the existing heat transfer tube assembly clamping, thereby achieving precise, stable and efficient assembly of heat transfer tubes.

[0006] The technical solution of this invention is implemented as follows:

[0007] A heat exchanger heat transfer tube assembly clamping device includes: a mounting base, the mounting base having a through opening, and clamping mechanisms symmetrically arranged on both sides of the top of the mounting base, the two sets of clamping mechanisms being synchronously linked and controlled by a bidirectional drive cylinder;

[0008] The clamping mechanism includes: fixed seats symmetrically fixed to the top of the mounting base; a drive shaft movably inserted between the fixed seats; the drive shaft and the fixed seats are connected by bearings; a clamping block is fixedly sleeved on the drive shaft; the clamping block is located between two fixed seats on the same side; the clamping block has an arc-shaped groove on the side near the heat transfer tube; the groove has anti-slip texture; drive arms are fixedly sleeved at both ends of the drive shaft; the ends of the drive arms away from the drive shaft are movably connected to drive rods through a rotating shaft; the ends of the two drive rods on the same side away from the drive arms are fixedly connected to the two output ends of the bidirectional drive cylinder.

[0009] Furthermore, reinforcing arms are fixed to both sides of the clamping block by bolts, and the ends of the reinforcing arms away from the clamping block are fixedly sleeved on the drive shaft, forming a stable structure with the clamping block and the drive shaft.

[0010] Furthermore, an adjusting component is fixedly provided at the end where the transmission rod connects to the transmission arm. The adjusting component is movably sleeved on the rotating shaft, and the adjusting component is provided with an elongated hole for adjusting the connection angle between the transmission rod and the transmission arm.

[0011] Furthermore, the bidirectional drive cylinder is equipped with a pressure regulating valve, and the output end of the bidirectional drive cylinder is connected to the transmission rod through a floating joint.

[0012] Furthermore, the depth of the anti-slip texture is 0.5-1mm.

[0013] Furthermore, the fixed seat is detachably connected to the mounting base by bolts, and the transmission arm is connected to the transmission shaft by a flat key and locked with a nut.

[0014] Furthermore, the mounting base is provided with leveling feet at the four corners of its bottom end. Each leveling foot includes a screw and a base, and the screw is threadedly connected to the mounting base.

[0015] The beneficial effects of this invention are:

[0016] 1. This invention provides precise and stable clamping while effectively protecting the heat transfer tube, solving the problems of inaccurate positioning and easy damage to the workpiece caused by traditional clamps. The device uses a bidirectional drive cylinder to synchronously control two sets of clamping mechanisms, ensuring that the movements of the clamping blocks on both sides are completely consistent, guaranteeing the symmetry and coaxiality of the heat transfer tube clamping, and effectively avoiding assembly deviations. The arc-shaped grooves of the clamping blocks are precisely matched with the outer circle of the heat transfer tube, and the anti-slip texture on the inner wall significantly enhances the friction between the clamping blocks and the heat transfer tube, preventing the heat transfer tube from sliding during assembly, and also buffers the clamping pressure, avoiding scratches or indentations on the surface of the heat transfer tube. At the same time, the air pressure regulating valve configured in the bidirectional drive cylinder can precisely adjust the clamping force according to the material and diameter of the heat transfer tube, completely solving the problem of heat transfer tube displacement or damage caused by uncontrolled force of traditional clamps, ensuring the structural integrity and performance of the heat transfer tube.

[0017] 2. This invention is highly efficient, convenient, versatile, and reliable, adaptable to mass production needs and reducing operating costs. The bidirectional drive cylinder achieves automated clamping control, eliminating the need for repeated manual adjustments, significantly reducing labor intensity, and greatly improving assembly efficiency. It can meet the needs of mass production, and the device has a simple structure and easy-to-use operation. The spacing and clamping angle of the clamping blocks can be flexibly adjusted through the adjusting components, adapting to heat transfer tubes of different diameters without changing to special clamps, effectively reducing production costs and broadening the applicability of the device. The reinforcing arms on both sides of the clamping blocks, together with the drive shaft and clamping blocks, form a stable structure, enhancing the clamping rigidity of the clamping blocks and preventing deformation under stress. The components adopt a detachable connection design, facilitating later maintenance and component replacement, and extending the overall service life of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a heat exchanger heat transfer tube assembly clamping device according to an embodiment of the present invention.

[0020] Figure 2 This is a side view schematic diagram of a heat exchanger heat transfer tube assembly clamping device according to an embodiment of the present invention;

[0021] Figure 3 This is a top view schematic diagram of a heat exchanger heat transfer tube assembly clamping device according to an embodiment of the present invention;

[0022] Figure 4 This is a bottom view schematic diagram of a heat exchanger heat transfer tube assembly clamping device according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Mounting base; 2. Through port; 3. Clamping mechanism; 4. Fixed base; 5. Drive shaft; 6. Clamping block; 7. Drive arm; 8. Rotating shaft; 9. Drive rod; 10. Two-way drive cylinder; 11. Groove; 12. Anti-slip texture; 13. Reinforcing arm; 14. Adjusting component. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0026] According to an embodiment of the present invention, a heat exchanger heat transfer tube assembly clamping device is provided.

[0027] like Figures 1-4 As shown, the heat exchanger heat transfer tube assembly clamping device according to an embodiment of the present invention includes a mounting base 1. The mounting base 1 is welded from Q235 steel plate, which has high structural strength and good stability. The mounting base 1 is provided with a through-hole 2. The width and height of the through-hole 2 are designed according to the maximum outer diameter of common heat transfer tubes and the assembly space requirements to ensure that there is no interference during the assembly process. The top two sides of the mounting base 1 are fixed with symmetrically arranged fixing seats 4 by bolts. The fixing seats 4 are made of cast iron and have bearing holes inside. The drive shaft 5 is installed in the bearing holes of the fixing seats 4 by deep groove ball bearings to ensure that the drive shaft 5 rotates flexibly and with low resistance.

[0028] A clamping block 6 is fixedly sleeved on the drive shaft 5 by a flat key. The clamping block 6 is made of aluminum alloy, which is lightweight and has sufficient strength to meet the clamping requirements. The curvature of the groove 11 of the clamping block 6 is designed according to the outer curvature of commonly used heat transfer tubes. The anti-slip texture 12 on the clamping block 6 is integrally formed. The depth of the anti-slip texture 12 is 0.5-1mm, which can enhance the friction without causing indentations on the surface of the heat transfer tube.

[0029] The two sides of the clamping block 6 are fixed with reinforcing arms 13 by internal hex bolts. The reinforcing arms 13 are made of stainless steel and have a rectangular cross section to enhance the structural rigidity. One end of the reinforcing arm 13 is attached to the clamping block 6, and the other end is fixed to the drive shaft 5 by set screws, forming a stable force-bearing structure with the drive shaft 5 and the clamping block 6.

[0030] The transmission shaft 5 has transmission arms 7 fixedly mounted on both ends by flat keys. The transmission arms 7 are made of steel plate bent into shape. Their ends are connected to the transmission rod 9 by a rotating shaft 8. A bushing is fitted on the rotating shaft 8 to reduce wear between the transmission arms 7 and the transmission rod 9. An adjusting component 14 is fixedly mounted on one end of the transmission rod 9. The adjusting component 14 is a rectangular steel plate with an elongated hole. The adjusting component 14 is fixed to the transmission rod 9 by bolts passing through the elongated hole. Loosening the bolts can adjust the position of the adjusting component 14 on the rotating shaft 8, thereby changing the clamping angle and spacing of the clamping blocks 6.

[0031] The bidirectional drive cylinder 10 is a standard dual-shaft cylinder, the model of which is selected according to the clamping force requirements. The two output ends of the cylinder are connected to the transmission rod 9 through floating joints, which can compensate for minor deviations during the assembly process.

[0032] When this device is in operation, firstly, according to the diameter of the heat transfer tube, the connection angle between the transmission rod 9 and the transmission arm 7 is adjusted by the adjusting component 14 so that the spacing of the grooves 11 of the clamping blocks 6 on both sides is adapted to the size of the heat transfer tube. Then, the heat transfer tube is placed between the grooves 11 of the clamping blocks 6 on both sides, and the bidirectional drive cylinder 10 is activated. The two output ends of the bidirectional drive cylinder 10 are adjusted synchronously, that is, extended outward or retracted inward. Through the transmission rod 9, the transmission arm 7 is driven to rotate around the transmission shaft 5, thereby driving the clamping blocks 6 on both sides to move closer or further away synchronously, realizing the clamping or releasing of the heat transfer tube. During the clamping process, the anti-slip texture 12 enhances the friction between the clamping blocks 6 and the heat transfer tube to prevent the heat transfer tube from sliding. The reinforcing arm 13 ensures the structural stability of the clamping blocks 6. The air pressure regulating valve precisely controls the clamping force to ensure that the heat transfer tube is both stably clamped and not damaged. The through-hole 2 in the mounting base 1 provides clearance space for the heat transfer tube and assembly components to avoid assembly interference. The leveling feet ensure that the mounting base 1 is horizontal and ensure the coaxiality requirements of the heat transfer tube assembly.

[0033] Specifically, in application, the mounting base 1 has leveling feet at the four corners of its bottom end. The leveling feet include screws and bases. The screws are threaded to the mounting base 1. By rotating the screws, the levelness of the mounting base 1 can be adjusted to ensure the accuracy of the heat transfer tube assembly reference.

[0034] Using the above solution, the specific implementation steps are as follows:

[0035] By rotating the leveling feet at the bottom of the mounting base 1, the mounting base 1 is brought into a horizontal position to ensure accurate assembly reference.

[0036] According to the diameter of the heat transfer tube to be assembled, loosen the bolts on the adjusting component 14, adjust the position of the adjusting component 14 on the rotating shaft 8, so that the spacing of the grooves 11 of the clamping blocks 6 on both sides matches the size of the heat transfer tube, and tighten the bolts after adjustment.

[0037] Place the heat transfer tube between the grooves 11 of the two clamping blocks 6, ensuring that the assembly end of the heat transfer tube is aligned with the assembly position.

[0038] Start the bidirectional drive cylinder 10, adjust the cylinder output pressure through the air pressure regulating valve, so that the two output ends of the bidirectional drive cylinder 10 are adjusted synchronously, driving the transmission rod 9 and the transmission arm 7 to move, thereby driving the transmission shaft 5 to rotate, so that the two clamping blocks 6 on both sides approach and clamp the heat transfer tube synchronously.

[0039] After the heat transfer tubes are clamped and fixed, the heat transfer tubes are assembled with components such as tube sheets and baffles.

[0040] After assembly, the output end of the bidirectional drive cylinder 10 is synchronously adjusted to move the clamp 6 away from the heat transfer tube, and the assembled heat exchanger components can be removed.

[0041] It should be noted that in this technical solution, the connection method, material selection and size design of each component can be adjusted according to the actual application scenario. As long as the clamping function and technical effect of this invention can be achieved, they all fall within the protection scope of this invention.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Those skilled in the art, upon considering the disclosure in the specification and embodiments, will readily conceive of other embodiments of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0043] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A heat exchanger heat transfer tube assembly clamping device, characterized in that, include: Mounting base (1), the mounting base (1) has a through opening (2) inside, and clamping mechanisms (3) are symmetrically arranged on both sides of the top of the mounting base (1). The two sets of clamping mechanisms (3) are synchronously linked and controlled by a bidirectional drive cylinder (10). The clamping mechanism (3) includes: a fixed seat (4) symmetrically fixed to the top of the mounting base (1), a drive shaft (5) movably inserted between the fixed seats (4), the drive shaft (5) and the fixed seat (4) being connected by a bearing, a clamping block (6) fixedly sleeved on the drive shaft (5), the clamping block (6) being located between two fixed seats (4) on the same side, the clamping block (6) having an arc-shaped groove (11) on the side near the heat transfer tube, the groove (11) having anti-slip texture (12); a drive arm (7) fixedly sleeved at both ends of the drive shaft (5), the end of the drive arm (7) away from the drive shaft (5) being movably connected to a drive rod (9) through a rotating shaft (8), the ends of the two drive rods (9) on the same side away from the drive arm (7) being fixedly connected to the two output ends of the bidirectional drive cylinder (10).

2. The heat exchanger heat transfer tube assembly clamping device according to claim 1, characterized in that, The clamping block (6) has a reinforcing arm (13) fixed on both sides by bolts. The end of the reinforcing arm (13) away from the clamping block (6) is fixedly sleeved on the transmission shaft (5). The reinforcing arm (13), the clamping block (6) and the transmission shaft (5) form a stable structure.

3. The heat exchanger heat transfer tube assembly clamping device according to claim 1, characterized in that, An adjusting member (14) is fixedly provided at the end where the transmission rod (9) connects to the transmission arm (7). The adjusting member (14) is movably sleeved on the rotating shaft (8). The adjusting member (14) is provided with an elongated hole for adjusting the connection angle between the transmission rod (9) and the transmission arm (7).

4. The heat exchanger heat transfer tube assembly clamping device according to claim 1, characterized in that, The bidirectional drive cylinder (10) is equipped with a pressure regulating valve, and the output end of the bidirectional drive cylinder (10) is connected to the transmission rod (9) through a floating joint.

5. The heat exchanger heat transfer tube assembly clamping device according to claim 1, characterized in that, The depth of the anti-slip texture (12) is 0.5-1mm.

6. The heat exchanger heat transfer tube assembly clamping device according to claim 1, characterized in that, The fixed seat (4) is detachably connected to the mounting base (1) by bolts, and the transmission arm (7) is connected to the transmission shaft (5) by a flat key and locked with a nut.

7. The heat exchanger heat transfer tube assembly clamping device according to claim 1, characterized in that, The mounting base (1) has leveling feet at the four corners of its bottom end. The leveling feet include a screw and a base. The screw is threadedly connected to the mounting base (1).

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