Variable diameter coiled pipe heat exchanger coil apparatus

Abstract

The utility model provides a variable diameter winding pipe heat exchanger coil equipment belongs to coil equipment technical field. Including base, main shaft, coil support, support frame and center frame. The main shaft axial direction is provided with pipe end plate clamp. The base is provided with main guide rail along the main shaft axial direction, is provided with the sub guide rail along the base width direction on the main guide rail, is provided with first support frame and second support frame on the sub guide rail and slides, the first support frame is provided with telescopic guide rail between the second support frame and parallel, telescopic guide rail passes on the screw rod and connects L type center frame, is provided with the cantilever in the direction perpendicular to center frame center arm, the cantilever end rotatably restricts to have fixed plate, is provided with coil straightening wheel and coil clamp on the fixed plate. Support frame can move through the guide rail, changes the diameter of coil, can adapt to different specifications heat exchanger, has improved the versatility of coil equipment.

Description

Technical Field

[0001] This utility model relates to the field of coil equipment technology, specifically to a coil equipment for a wound tube heat exchanger. Background Technology

[0002] In the field of heat exchanger manufacturing, wound tube heat exchangers are widely used in critical processes with large temperature differences, such as petrochemicals and natural gas liquefaction, due to their significant advantages such as compact structure, high heat exchange efficiency, and strong pressure resistance. Their core structure consists of a tube bundle formed by multiple slender heat exchange tubes tightly spirally wound around a central core cylinder according to a specific pattern. The specialized equipment used to achieve precise, efficient, and reliable forming of this complex tube bundle is the coiling equipment for wound tube heat exchangers.

[0003] However, current coiling equipment still has some shortcomings in practical applications. On the one hand, the versatility and adaptability of the equipment need to be improved. When the specifications of the heat exchanger (such as core diameter, tube diameter, number of winding layers, and helix angle) change, the equipment adjustment is often cumbersome and time-consuming, involving the replacement and recalibration of a large number of mechanical parts, which significantly affects production efficiency. On the other hand, some equipment lacks sufficient automation and intelligence, relies heavily on the experience of operators, and finds it difficult to reliably guarantee high consistency and reliability of products under mass production.

[0004] Therefore, there is an urgent need to develop a new type of coiling equipment that is highly versatile and automated. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a variable diameter wound tube heat exchanger coil device to improve the versatility and automation of the coil device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a variable diameter wound tube heat exchanger coil device, comprising: a base, a main shaft, a coil support, a support frame, and a central frame. The main shaft is mounted on the base, the coil support is coaxially connected to the main shaft and driven to rotate by the main shaft, the support frame supports the coil support, the support frame is slidably mounted on the base along the axial direction of the main shaft, and the support height of the support frame is adjustable. The central frame is also slidably mounted on the base along the axial direction of the main shaft. The upper part of the central frame has a coil straightening device, and the horizontal and vertical distances of the coil straightening device relative to the coil support are adjustable.

[0007] Optionally, the coil support has a front plate and a rear plate, with the front plate close to the main shaft and the rear plate away from the main shaft, and the front plate and the rear plate having coil holes arranged in a ring array.

[0008] Optionally, the main shaft has a tube end plate clamp on its axial direction, and the central axis of the coil support can be clamped by the tube end plate clamp.

[0009] Optionally, the support frame includes a first support frame and a second support frame, with the first support frame close to the main shaft and the second support frame away from the main shaft, and the coil support is placed on the first support frame and the second support frame through a front end plate and a rear end plate.

[0010] Optionally, the support frame comprises two parts that are cross-hinged, and two rollers are arranged parallel to each other on the top of the support frame.

[0011] Optionally, the base is provided with a main guide rail along the main shaft axis, a first secondary guide rail is fixedly provided on the main guide rail near the main shaft, and a second secondary guide rail is slidably provided on the side away from the main shaft. A first support frame is slidably provided on the first secondary guide rail, and a second support frame is slidably provided on the second secondary guide rail.

[0012] Optionally, the first and second auxiliary guide rails are provided with double-threaded screws, with left-hand and right-hand threads respectively at both ends of the double-threaded screws. The bottom ends of the support frame are provided with left-hand and right-hand screw holes respectively. The support frame is connected to the double-threaded screws through the screw holes. The double-threaded screws can adjust the support height of the support frame under the drive of the motor.

[0013] Optionally, a telescopic guide rail is provided parallel to the first and second auxiliary guide rails. The telescopic guide rail is slidably mounted on the main guide rail. The telescopic guide rail is threadedly connected to the L-shaped center frame via a telescopic screw. The center arm of the center frame is perpendicular to the base. A cantilever is provided in a direction perpendicular to the center arm. A mounting plate is rotatably constrained at the end of the cantilever. A coil straightening device is provided on the mounting plate. The coil straightening device includes a coil straightening wheel and a coil clamp.

[0014] Optionally, a first traveling motor is provided under the second auxiliary guide rail, and the second auxiliary guide rail drives the second support frame to move along the main guide rail. A second traveling motor is provided at the bottom of the telescopic guide rail, and the telescopic guide rail drives the central frame to move along the main guide rail. The telescopic screw, driven by the motor, can drive the central frame to move along the width direction of the base.

[0015] Optionally, the central arm is provided with a lifting screw along the height direction, and the cantilever is threadedly connected to the lifting screw, so that the cantilever can move along the height direction under the drive of the lifting motor.

[0016] As can be seen from the above technical solution, the beneficial technical effects of this utility model are as follows: This device actively adjusts the parameters of the coil unit by moving the support frame on the main and auxiliary guide rails. Therefore, when manufacturing heat exchangers of different specifications, it is unnecessary to replace a large number of coil unit components, significantly reducing the manpower and material resources required for equipment commissioning, improving the versatility of the coil unit, and increasing the production efficiency of the heat exchanger. Simultaneously, this device achieves automated control of the coiling process through PLC coding, reducing interference caused by differences in human operation, improving the stability and reliability of the coil unit's operation, and ensuring precise control during the coiling process. This makes heat exchanger production more standardized and better guarantees the quality of the heat exchangers. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a partially enlarged schematic diagram of the present invention; Figure 3 This is a schematic diagram of the coil support of this utility model; 1. Base; 2. Main guide rail; 3. First auxiliary guide rail; 4. First support frame; 5. Telescopic guide rail; 6. Telescopic lead screw; 7. Center frame; 8. Coil straightening wheel; 9. Coil clamp; 10. Main spindle; 11. Tube end plate clamp; 12. Coil bracket; 13. Front end plate; 14. Rear end plate; 15. Coil hole; 16. Double threaded lead screw; 17. First travel motor; 18. Roller; 19. Lifting lead screw; 20. Main spindle encoder; 21. Automatic control panel; 22. Meter encoder; Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] Example 1 A variable diameter wound tube heat exchanger coil device includes: a base 1, a main shaft 10, a coil support 12, a support frame, and a central frame 7. The main shaft 10 is mounted on the base 1. The coil support 12 is coaxially connected to the main shaft 10 and driven to rotate by the main shaft 10. The support frame is used to support the coil support 12 and is slidably mounted on the base 1 along the axial direction of the main shaft 10. The support height of the support frame is adjustable. The central frame 7 is also slidably mounted on the base 1 along the axial direction of the main shaft 10. The central frame 7 has a coil straightening device on its upper part. The horizontal distance and height distance of the coil straightening device relative to the coil support are adjustable.

[0022] In this embodiment, a main guide rail 2 is axially arranged on the base 1 along the main shaft 10. A first auxiliary guide rail 3 is fixedly arranged on the main guide rail 2 near the main shaft 10, and a second auxiliary guide rail is slidably arranged on the side away from the main shaft 10. A first support frame 4 is slidably arranged on the first auxiliary guide rail 3, and a second support frame is slidably arranged on the second auxiliary guide rail. A telescopic guide rail 5 is arranged parallel between the first auxiliary guide rail 3 and the second auxiliary guide rail. The telescopic guide rail 5 is slidably installed on the main guide rail 2. The telescopic guide rail 5 is threadedly connected to an L-shaped center frame 7 through a telescopic screw 6. The center arm of the center frame 7 is perpendicular to the base 1, and a cantilever is arranged in a direction perpendicular to the center arm. A mounting plate is rotatably constrained at the end of the cantilever. A coil straightening wheel 8 and a coil clamp 9 are arranged on the mounting plate. The coil straightening wheel 8 and the coil clamp 9 can rotate arbitrarily in the horizontal direction with the mounting plate. It also includes an electrical control cabinet, which is mounted on the base 1 and close to the first support frame 4. The control cabinet has a main shaft 10 facing the first support frame 4, driven by a variable frequency speed-regulating motor, capable of clockwise and counterclockwise rotation. A tube end plate clamp 11 is axially mounted on the main shaft 10. The coil support 12 has a front end plate 13 and a rear end plate 14, with coil holes 15 arranged in a circular array on the front end plate 13 and rear end plate 14. The coil support 12 is placed on the first support frame 4 and the second support frame via the front end plate 13 and rear end plate 14, and its central axis can be clamped by the tube end plate clamp 11. A main shaft encoder 20 is installed inside the electrical control cabinet, and an automatic control panel 21 is located on one side of the cabinet. Meter encoders 22 are arranged parallel to each other between the main guide rails 2.

[0023] The working process of this device is as follows: Place the front plate 13 and rear plate 14 of the coil support 12 to be wound on the first support frame 4 and the second support frame respectively, with its central axis clamped by the tube end plate clamp 11 on the main shaft 10. Input the number of coils, helical pitch, speed, and rotation direction into the automatic control panel 21 of this device, and the PLC control system will automatically calculate the operating data of the current layer of coils. Pass the coil to be wound through the coil straightening wheel 8 (the bent coil will straighten after passing through the coil straightening wheel 8) and the coil clamp 9, and fix it on the coil hole 15 around the center of the front plate 13 (when fixing the coil, lock the coil clamp 9 when its length reaches the required length to prevent the rear end of the coil from generating ejection tension due to bending). After fixing the coil, open the coil clamp 9, adjust the center frame 7 and the cantilever to the appropriate position, and the winding equipment can be started. After power is turned on, the spindle 10 achieves preset speed adjustment via a frequency converter. The spindle 10 drives the coil support 12 to rotate, and the coil fixed to the front end plate 13 rotates along with it and winds onto the coil support 12. The center frame 7 moves along the main guide rail 2 towards the rear end plate 14, causing the coil to be straightened by the coil straightening wheel 8 and wound onto the coil support 12. The number of rotations of the spindle 10 is fed back by the spindle encoder 20, and the center frame 7 is fed back by the meter encoder 22. When the preset value is reached, the spindle 10 and the center frame 7 stop working synchronously. The coil clamp 9 is locked, fixing the coil to the coil hole 15 of the rear end plate 14, and the coil is cut. Then, the winding of the second coil begins. This process uses automated control, making the operation of the coil equipment more programmed and precise, avoiding errors caused by excessive human operation, making the production of heat exchangers more standardized, and making the quality of heat exchangers more stable.

[0024] As a further improvement to the above scheme, the first and second auxiliary guide rails are equipped with double-threaded screws 16, with left-hand and right-hand threads at both ends of the screws 16. The first and second support frames are both formed by two parts hinged together, with left-hand and right-hand threaded holes at their bottom ends respectively. The support frames are connected to the double-threaded screws 16 through these threaded holes. When the double-threaded screws 16 are driven to rotate by a motor, they can cause the bottom of the support frames to open and close, thus changing the height and width of the support. A first traveling motor 17 is installed under the second auxiliary guide rail, driving the second support frame to move along the main guide rail 2. When the specifications of the heat exchanger change, the coil equipment can also be adjusted accordingly by moving the support frames to match the required coil diameter, length, etc., of the heat exchanger. This device, with its high adaptability, reduces the difficulty of equipment adjustment, reduces the time required for adjustment, and greatly improves the production efficiency of the heat exchanger.

[0025] Furthermore, rollers 18 are fixedly installed at both ends of the top of the first support frame 4 and the second support frame, and the front end plate 13 and the rear end plate 14 of the coil support 12 can roll on the rollers 18. When the main shaft 10 drives the coil support 12 to rotate, the rollers 18 will also be driven to rotate, avoiding wear between the devices due to friction.

[0026] In this embodiment, a second traveling motor is installed at the bottom of the central frame 7, which can drive the central frame 7 to move along the main guide rail 2. The telescopic lead screw 6, driven by the motor, can drive the central frame 7 to move along the width direction of the base 1. A lifting lead screw 19 is installed along the height direction of the central arm, and the cantilever is threadedly connected to the lifting lead screw 19, allowing the cantilever to move along the height direction under the drive of the lifting motor. The central frame 7 replaces traditional manual control, making the control of the coil more precise and stable during the coiling process. The coil straightening wheel 8 and coil clamp 9 installed on its cantilever ensure the straightness of the coil. Simultaneously, the motion design of the central frame 7 ensures its adaptability, allowing the central frame 7 to change position as the coiling process progresses, greatly improving the reliability of the coiling process.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A variable diameter wound tube heat exchanger coil device, characterized in that, include: Base (1), spindle (10), coil support (12), support frame and center frame (7); The main shaft (10) is mounted on the base (1), and the coil support (12) is coaxially connected to the main shaft (10) and driven to rotate by the main shaft (10); The support frame is used to support the coil support (12). The support frame is slidably mounted on the base (1) along the main shaft (10). The support height of the support frame is adjustable. The central frame (7) is also slidably mounted on the base (1) along the main shaft (10). The upper part of the central frame (7) has a coil straightening device, and the horizontal and vertical distances of the coil straightening device relative to the coil support (12) can be adjusted.

2. The variable diameter wound tube heat exchanger coil equipment as described in claim 1, characterized in that, The coil support (12) has a front plate (13) and a rear plate (14). The front plate (13) is close to the main shaft (10), and the rear plate (14) is far from the main shaft (10). The front plate (13) and the rear plate (14) have coil holes (15) arranged in a ring array.

3. The variable diameter wound tube heat exchanger coil equipment as described in claim 1, characterized in that, The main shaft (10) has a tube end plate clamp (11) on its axis, and the central axis of the coil support (12) can be clamped by the tube end plate clamp (11).

4. The variable diameter wound tube heat exchanger coil equipment as described in claim 1, characterized in that, The support frame includes a first support frame (4) and a second support frame. The first support frame (4) is close to the main shaft (10), and the second support frame is away from the main shaft (10). The coil support (12) is placed on the first support frame (4) and the second support frame through the front end plate (13) and the rear end plate (14).

5. The variable diameter wound tube heat exchanger coil equipment as described in claim 1, characterized in that, The support frame consists of two parts that are cross-hinged, and two rollers (18) are arranged parallel to each other on the top of the support frame.

6. The variable diameter wound tube heat exchanger coil equipment as described in claim 1, characterized in that, The base (1) is provided with a main guide rail (2) along the main shaft (10). A first auxiliary guide rail (3) is fixedly provided on the main guide rail (2) on the side close to the main shaft (10), and a second auxiliary guide rail is slidably provided on the side away from the main shaft (10). A first support frame (4) is slidably provided on the first auxiliary guide rail (3), and a second support frame is slidably provided on the second auxiliary guide rail.

7. A variable diameter wound tube heat exchanger coil device as described in claim 6, characterized in that, The first auxiliary guide rail (3) and the second auxiliary guide rail are provided with double threaded screws (16). The two ends of the double threaded screws (16) are respectively provided with left-hand and right-hand threads. The two ends of the bottom of the support frame are respectively provided with left-hand screw holes and right-hand screw holes. The support frame is connected to the double threaded screws (16) through the screw holes. The double threaded screws (16) can adjust the support height of the support frame under the drive of the motor.

8. The variable diameter wound tube heat exchanger coil equipment as described in claim 7, characterized in that, A telescopic guide rail (5) is provided parallel to the first auxiliary guide rail (3) and the second auxiliary guide rail. The telescopic guide rail (5) is slidably installed on the main guide rail (2). The telescopic guide rail (5) is threadedly connected to the L-shaped center frame (7) through the telescopic screw (6). The center arm of the center frame (7) is perpendicular to the base (1). A cantilever is provided in the direction perpendicular to the center arm. The end of the cantilever is rotatably constrained by a mounting plate. A coil straightening device is provided on the mounting plate. The coil straightening device includes a coil straightening wheel (8) and a coil clamp (9).

9. A variable diameter wound tube heat exchanger coil device as described in claim 8, characterized in that, The second auxiliary guide rail is provided with a first walking motor (17), which drives the second support frame to move along the main guide rail (2). The telescopic guide rail (5) is provided with a second walking motor at its bottom, which drives the central frame (7) to move along the main guide rail (2). The telescopic screw (6) can drive the central frame (7) to move along the width direction of the base (1) under the motor drive.

10. A variable diameter wound tube heat exchanger coil device as described in claim 8, characterized in that, The central arm is provided with a lifting screw (19) along the height direction, and the cantilever is threadedly connected to the lifting screw (19). The cantilever can move along the height direction under the drive of the lifting motor.

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