Tube withdrawal device for heat exchange tube processing equipment and heat exchange tube processing equipment

Abstract

The present application relates to a tube withdrawing device and a heat exchange tube processing device for heat exchange tube processing equipment, wherein the tube withdrawing device comprises: a support roller, which is arranged below the heat exchange tube and can be raised and lowered relative to a support assembly and has a first raised position and a first lowered position, wherein the support roller at the first lowered position is separated from the heat exchange tube supported by the support assembly, and the support roller at the first raised position lifts the heat exchange tube and thereby causes the heat exchange tube to leave the support assembly; a pressure roller, which is opposite to the support roller above the heat exchange tube and can clamp the heat exchange tube along the up and down direction with the support roller at the first raised position, wherein each of the support roller and the pressure roller can rotate around the radial direction of the heat exchange tube, and the radial direction is a horizontal direction; a first power device, connected to the pressure roller to drive the pressure roller to rotate around the radial direction.

Description

Technical Field

[0001] The present application relates to a tube withdrawing device for heat exchange tube processing equipment and heat exchange tube processing equipment. Background Art

[0002] In nuclear power units, the Moisture Separator Reheater (MSR) is an essential key equipment. The Moisture Separator Reheater contains a large number of high-efficiency heat exchange tubes, and usually each high-efficiency heat exchange tube needs to be processed with external fins and internal strengthening threads as required.

[0003] In some application scenarios, the length of the heat exchange tube in the steam-water separator reheater reaches nearly 40 meters, and the entire heat exchange tube is set to a configuration of a bare tube section + a finned tube section + a bare tube section + a finned tube section + a bare tube section. The heat exchange tube of this configuration can be made of a metal tube blank and processed by a fin machine. During the processing, when the fin machine processes the tube blank, the tube blank is driven by the forming tool to make a spiral linear motion, that is, the heat exchange tube will automatically withdraw from the fin machine during the formation of the fin segment, but the bare tube section needs to be output by external force, especially the tail bare tube section of the heat exchange tube. At present, the common way to withdraw the tube is to use manual dragging or a synchronous belt clamping transmission that provides power. However, since the length of the heat exchange tube is tens of meters, the efficiency of manual dragging is low and requires the assistance of multiple people, and the effect of using a synchronous belt clamping transmission is poor, and it is difficult to completely withdraw the heat exchange tube to the set position. At the same time, it is easy to damage the outer fin structure of the heat exchange tube, affecting the performance of the heat exchange tube. Summary of the invention

[0004] In view of this, the present application proposes a tube withdrawing device for heat exchange tube processing equipment and heat exchange tube processing equipment.

[0005] In a first aspect, a tube withdrawing device for a heat exchange tube processing device is provided, wherein the heat exchange tube processing device comprises a support assembly for supporting the heat exchange tube from below, and the tube withdrawing device comprises:

[0006] a support roller, arranged below the heat exchange tube, and capable of being raised and lowered relative to the support assembly and having a first raised position and a first lowered position, wherein the support roller at the first lowered position is separated from the heat exchange tube supported by the support assembly, and the support roller at the first raised position lifts the heat exchange tube, thereby causing the heat exchange tube to leave the support assembly;

[0007] a pressing roller, which is located above the heat exchange tube and is opposite to the supporting roller, and is capable of clamping the heat exchange tube in the up-down direction with the supporting roller in the first raised position, wherein each of the supporting roller and the pressing roller is capable of rotating around the radial direction of the heat exchange tube, and the radial direction is a horizontal direction;

[0008] A first power device is connected to the pressing roller to drive the pressing roller to rotate around the radial direction.

[0009] In some possible embodiments, the pressure roller can be raised and lowered relative to the support assembly and has a second raised position and a second lowered position, the pressure roller in the second lowered position and the support roller in the raised position clamp the heat exchange tube in the up and down directions, and the pressure roller in the second raised position is separated from the heat exchange tube.

[0010] In some possible implementations, the tube withdrawal device includes:

[0011] A second power device, connected to the support roller, to drive the support roller to rise and fall;

[0012] A third power device, connected to the pressing roller, to drive the pressing roller to rise and fall;

[0013] A controller is electrically connected to the second power device and the third power device, and is configured to:

[0014] Before controlling the second power device to drive the support roller to move from the first lowered position to the first raised position, determining that the pressure roller is in the second raised position; and

[0015] Before controlling the third power device to drive the pressure roller to move from the second raised position to the second lowered position, it is determined that the support roller is in the first raised position.

[0016] In some possible implementations, the controller is configured to:

[0017] Before controlling the second power device to drive the support roller to move from the first lowered position to the first raised position, if it is determined that the pressure roller is not in the second raised position, controlling the third power device to drive the pressure roller to move to the second raised position;

[0018] Before controlling the third power device to drive the pressure roller to move from the second raised position to the second lowered position, if it is determined that the support roller is not in the first raised position, the second power device is controlled to drive the support roller to move to the first raised position.

[0019] In some possible implementations, the tube withdrawal device includes:

[0020] A movable seat capable of moving relative to the heat exchange tube along the radial direction and having a retracted position and a non-retracted position;

[0021] a lifting seat, mounted on the movable seat in a lifting manner, wherein the pressure roller is mounted on the movable seat in a rotatable manner about the radial direction, and the pressure roller is switched between the second raised position and the second lowered position by lifting and lowering the movable seat;

[0022] Wherein, when the movable seat is in the non-retreat position, the pressure roller is located directly above the heat exchange tube; when the movable seat is in the retreat position, the pressure roller is offset from the heat exchange tube in the up-down direction.

[0023] In some possible implementations, two of the support roller and two of the pressure roller are respectively configured, and the two pressure rollers are both mounted on the movable seat and are arranged spaced apart along the axial direction of the heat exchange tube.

[0024] In some possible implementations, the lifting seat is mounted to the movable seat in a manner of being rotatable about the radial direction, and a rotation axis of the lifting seat is located between the two pressing rollers.

[0025] In the second aspect, a heat exchange tube processing device is proposed, comprising:

[0026] The tube withdrawal device as described in the first aspect; and

[0027] The support assembly.

[0028] In some possible implementations, the support assembly includes:

[0029] The roller pair includes a first roller and a second roller arranged along the radial direction of the heat exchange tube, each of the first roller and the second roller is capable of rotating around the axial direction, wherein, when the support assembly supports the heat exchange tube from below, the outer peripheral surface of the heat exchange tube is in rolling contact with the outer peripheral surface of the first roller and the outer peripheral surface of the second roller, respectively.

[0030] In some possible implementations, the tube withdrawal device and the roller pair are respectively provided in plurality, and the supporting rollers in the plurality of tube withdrawal devices and the plurality of roller pairs are alternately arranged along the axial direction.

[0031] According to the tube withdrawal device provided in the present application, heat exchange tubes of various diameters can be easily withdrawn from the fin machine without easily damaging the fins on the surface of the heat exchange tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0033] Figure 1 It is a structural schematic diagram of a part of the heat exchange tube processing equipment provided in one embodiment of the present application.

[0034] Figure 2 Observe from another perspective Figure 1 Schematic diagram of a part of .

[0035] Figure 3 yes Figure 1 Schematic top view of .

[0036] Figure 4 yes Figure 1 Schematic diagram of the main view.

[0037] Figure 5 yes Figure 1 Schematic side view of .

[0038] Figure 6 yes Figure 5 A partial enlarged view of .

[0039] Figure 7 yes Figure 5 Schematic diagram of the structure of the lifting assembly.

[0040] Description of reference numerals:

[0041] F1-axial direction, F2-radial direction;

[0042] 100-support assembly, 200-tube withdrawal device, AA-heat exchange tube;

[0043] 1-H-beam;

[0044] 2- roller pair, 3- first roller, 4- second roller;

[0045] 6-lifting assembly, 7-first cylinder, 8-mounting seat, 9-support roller;

[0046] 10-base, 11-first guide rail, 12-first slider, 13-movable seat, 14-slide cylinder, 15-lifting seat, 16-second guide rail, 17-second slider, 18-second cylinder, 19-pressure roller, 20-reduction motor, 21-first synchronous wheel, 22-second synchronous wheel, 23-third synchronous wheel, 24-fourth synchronous wheel, 25-first synchronous belt, 26-second synchronous belt. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described below in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. It can be understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0048] In the description of this application, if there are terms such as "first", "second", etc., they are only used to distinguish the objects described and do not have any order or technical meaning. Therefore, an object defined as "first", "second", etc. may explicitly or implicitly include one or more of the objects, and, for example, the term "first element" itself does not mean the existence of the "second element", and the term "second element" itself does not mean the existence of the "first element". In addition, "one" or "a" and similar words do not indicate a quantity limitation, but rather indicate the existence of at least one, and "multiple" means not less than two.

[0049] In the description of the present application, the terms “including”, “having” indicate the existence of the described features, numbers, operations, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, numbers, operations, elements and / or their combinations.

[0050] In the description of the present application, reference to "one embodiment" or "some embodiments" etc. means that one or more embodiments of the present application include a particular feature, structure or characteristic described in conjunction with the embodiment. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in the present specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0051] Figures 1 to 5 A part of a heat exchange tube AA processing device provided in an embodiment of the present application is shown, and the heat exchange tube AA processing device includes a support assembly 100, a tube withdrawal device 200, and a fin processing unit (not shown). The support assembly 100 is used to support the heat exchange tube AA extending straight from below, the fin processing unit is used to process protruding fins on the inner circumference and / or outer circumference of the heat exchange tube AA to improve its heat exchange performance, and the tube withdrawal device 200 is used to move the heat exchange tube AA with fins added away from the fin processing unit along the axial direction F1.

[0052] The support assembly 100 includes an H-beam 1 extending along (e.g., parallel to) the axial direction F1 of the heat exchange tube AA and a plurality of roller pairs 2 mounted on the top side of the H-beam 1, and the plurality of roller pairs 2 are arranged spaced apart from each other along the aforementioned axial direction F1. The H-beam 1 includes an upper flange plate, a lower flange plate arranged parallel to and below the upper flange plate, and a vertical plate integrally connected between the two flange plates. Each roller pair 2 includes a first roller 3 and a second roller 4 that are longer in the axial direction F1, and the first roller 3 and the second roller 4 are arranged along the radial direction F2 of the heat exchange tube AA, and a small gap is separated therebetween, and the aforementioned radial direction F2 is a horizontal direction. Each of the first roller 3 and the second roller 4 is capable of rotating around the axial direction F1, in other words, the rotation axes of the first roller 3 and the second roller 4 extend along the axial direction F1 of the heat exchange tube AA. In which, when the support assembly 100 supports the heat exchange tube AA from below, the outer peripheral surface of the heat exchange tube AA rolls in contact with the outer peripheral surface of the first roller 3 and the outer peripheral surface of the second roller 4. During the period when the fin processing unit performs fin processing on the heat exchange tube AA, the heat exchange tube AA is in a state supported by the roller pair 2, and driven by the fin processing unit, the heat exchange tube AA rotates around its own axis on the one hand, thereby driving the first roller 3 and the second roller 4 to rotate, and on the other hand, it slowly withdraws from the fin processing unit along the axial direction F1. The first roller 3 and the second roller 4 rotating with the heat exchange tube AA can reduce the friction force on the outer surface of the heat exchange tube AA and prevent the fins on the outer surface of the heat exchange tube AA from being damaged; and during the period when the fin processing unit temporarily stops performing fin processing on the heat exchange tube AA (in order to obtain a bare tube section), the fin processing unit no longer applies a rotational and axial movement force to the heat exchange tube AA. At this time, the tube withdrawal device 200 can be controlled to intervene, and the tube withdrawal device 200 drives the heat exchange tube AA to withdraw from the fin processing unit.

[0053] There are multiple tube withdrawal devices 200, which are arranged in sequence along the axial direction F1 of the heat exchange tube AA, and all the supporting rollers 9 described later in the multiple tube withdrawal devices 200 are alternately arranged with the multiple roller pairs 2 described above along the axial direction F1 of the heat exchange tube AA. For the convenience of drawing, only one tube withdrawal device 200 is shown in the figure. Figures 1 to 7 The tube withdrawal device 200 includes a lifting assembly 6 having a supporting roller 9, a base 10, a movable seat 13, a lifting seat 15 and a pressing roller 19.

[0054] The lifting assembly 6 includes a first cylinder 7 (an example of a second power device), the cylinder body of the first cylinder 7 is connected via a Figure 7The connecting plate with omitted reference numerals is fixed to the bottom of the upper flange plate of the aforementioned H-beam 1, the cylinder shaft of the first cylinder 7 can movably penetrate the upper flange plate upward, and the upper end of the cylinder shaft is threadedly connected to a mounting seat 8, and the support roller 9 is mounted on the mounting seat 8 in a manner that it can rotate around the aforementioned radial direction F2 (that is, the rotation axis of the support roller 9 extends along the radial direction F2), and the support roller 9 is located below the heat exchange tube AA. In this way, through the drive of the first cylinder 7, the support roller 9 can be raised and lowered relative to the support assembly 100, and thus has a first raised position and a first lowered position. In detail, when the cylinder shaft of the first cylinder 7 is retracted downward, the support roller 9 is lowered and is in the first lowered position, and when the cylinder shaft of the first cylinder 7 is extended upward, the support roller 9 is raised and is in the first raised position. Furthermore, when the support roller 9 is in the first lowered position, since the support roller 9 is lower than the roller pair 2 in the direction of gravity, the support roller 9 is separated from the heat exchange tube AA by a certain distance, and the heat exchange tube AA is in a state of being supported from below by the first roller 3 and the second roller 4; and when the support roller 9 is in the first raised position, since the support roller 9 is higher than the roller pair 2 in the direction of gravity, the support roller 9 lifts the heat exchange tube AA, thereby causing the heat exchange tube AA to leave the support assembly 100, more specifically, the first roller 3 and the second roller 4, that is, the heat exchange tube AA is in a state of being lifted by the support roller 9 and separated from the roller pair 2.

[0055] The base 10 is fixed to one side of the H-shaped steel 1 and is formed into a plate shape. Two first rails 11 parallel to each other are fixed to the upper surface of the base 10 via bolts (reference numerals omitted), and the first rails 11 extend horizontally along the aforementioned radial direction F2.

[0056] The bottom of the movable seat 13 is fixed with a plurality of first sliders 12 via bolts whose reference numerals are omitted, and the plurality of first sliders 12 are respectively slidably connected to the aforementioned two first guide rails 11, whereby the movable seat 13 can move relative to the base 10 and the heat exchange tube AA in the radial direction F2 by means of the sliding fit between the first sliders 12 and the first guide rails 11, and through this movement, the movable seat 13 has a retracted position and a non-retracted position. In addition, the slide cylinder 14 is bolted to the upper surface of the base 10 and is located between the two first guide rails 11. The movable seat 13 is connected to the slide of the slide cylinder 14, whereby the movable seat 13 is driven to move in the radial direction F2 by the slide cylinder 14.

[0057] The lifting seat 15 is formed in a plate shape and is mounted to the movable seat 13 in a manner that allows it to be lifted and lowered. The pressure roller 19 is mounted to the movable seat 13 in a manner that allows it to rotate around the radial direction F2 (i.e., the rotation axis of the pressure roller 19 extends along the radial direction F2). By lifting and lowering the movable seat 13, the pressure roller 19 is lifted and lowered relative to the support assembly 100 and the heat exchange tube AA, and by lifting and lowering the pressure roller 19, the pressure roller 19 has a second raised position and a second lowered position. In more detail, the movable seat 13 is fixed with two second guide rails 16 that are parallel to each other and extend up and down via bolts, and the lifting seat 15 is fixed with a plurality of second sliders 17 via bolts, and the plurality of second sliders 17 are respectively slidably connected to the two second guide rails 16, thereby guiding the lifting and lowering of the lifting seat 15 through the sliding cooperation between the second sliders 17 and the second guide rails 16. The top of the movable seat 13 is fixed with a cylinder body of a second cylinder 18 (an example of a third power device) via bolts. The cylinder shaft of the second cylinder 18 extends downward and is connected to the lifting seat 15. Thus, the lifting seat 15 is driven to move up and down by the second cylinder 18.

[0058] When the movable seat 13 is in the non-retreat position, the pressure roller 19 is located directly above the heat exchange tube AA; and when the movable seat 13 is in the retreat position, the pressure roller 19 is staggered from the heat exchange tube AA in the vertical direction, that is, when viewed in the vertical direction, the pressure roller 19 and the heat exchange tube AA are separated from each other. Figure 1 In the embodiment, the movable seat 13 is in the non-retracted position, and when the movable seat 13 is in the Figure 1 When the movable seat 13 moves a sufficient distance toward the inside of the paper, the movable seat 13 is in the retreat position. In this way, by moving the movable seat 13 to the retreat position, a sufficient operating space can be formed above the heat exchange tube AA. Based on the operating space, the heat exchange tube AA after processing can be easily moved out from above the support roller 9. In addition, based on the operating space, the tube blank to be processed into the heat exchange tube AA can also be easily transferred from above to the support assembly 100.

[0059] The reduction motor 20 (an example of a first power device) mounted on the lifting base 15 is connected to the pressure roller 19 via a transmission mechanism to be described in detail later, so as to drive the pressure roller 19 to rotate around the radial direction F2.

[0060] When the movable seat 13 is in the non-retreat position, the pressure roller 19 is opposite to the support roller 9 above the heat exchange tube AA. More specifically, the pressure roller 19 is directly above the support roller 9 and the heat exchange tube AA, and if the pressure roller 19 is in the aforementioned second lowered position and the support roller 9 is in the aforementioned first raised position, the pressure roller 19 and the support roller 9 clamp the heat exchange tube AA in the up and down directions. In this state, if the reduction motor 20 drives the pressure roller 19 to rotate, based on the friction force between the pressure roller 19 and the heat exchange tube AA, the heat exchange tube AA is moved in the axial direction F1, and the support roller 9 below is driven to rotate.

[0061] The material forming the pressure roller 19 and the support roller 9 can have a certain flexibility and a certain wear resistance, such as polyurethane or Teflon. In this way, the fins on the outer peripheral surface of the heat exchange tube AA can be prevented from being crushed and deformed by the pressure roller 19 and the support roller 9, and it helps to extend the service life of the pressure roller 19 and the support roller 9.

[0062] In this embodiment, even when the support roller 9 is in the first raised position, if the pressure roller 19 is in the higher second raised position, the pressure roller 19 is separated from the heat exchange tube AA, that is, the heat exchange tube AA will not be clamped by the pressure roller 19 in the second raised position and the support roller in the first raised position.

[0063] The tube withdrawing device 200 further includes a controller electrically connected to the first cylinder 7 and the second cylinder 18 , and the controller is used to control the operation of the first cylinder 7 and the second cylinder 18 , thereby adjusting the lifting and lowering positions of the pressing roller 19 and the supporting roller 9 .

[0064] The controller is configured to: determine that the pressure roller 19 is in the second raised position before controlling the first cylinder 7 to drive the support roller 9 to move from the first lowered position to the first raised position; and determine that the support roller 9 is in the first raised position before controlling the second cylinder 18 to drive the pressure roller 19 to move from the second raised position to the second lowered position. In other words, the controller will control the first cylinder 7 to drive the support roller 9 to move from the first lowered position to the first raised position only after confirming that the pressure roller 19 is in the second raised position; and the controller will control the second cylinder 18 to drive the pressure roller 19 to move from the second raised position to the second lowered position only after confirming that the support roller 9 is in the first raised position. It is understandable that if the controller controls the first cylinder 7 to drive the support roller 9 to move toward the first raised position when the pressure roller 19 is in a lower position, the support roller 9 may not move upward due to the initial position of the pressure roller 19 being too low, thereby causing the heat exchange tube AA to fail to completely leave the roller pair 2; if the controller controls the second cylinder 18 to drive the pressure roller 19 to move toward the second lowered position when the support roller 9 is in a lower position (for example, the first lowered position), the pressure roller 19 may move downward due to the initial position of the support roller 9 being too low, thereby causing the pressure roller 19 to press and bend the heat exchange tube AA downward between adjacent roller pairs 2. Such a situation can be avoided by configuring the controller in the above manner.

[0065] Further, the controller is also configured as follows: before controlling the first cylinder 7 to drive the support roller 9 to move from the first lowered position to the first raised position, if it is determined that the pressure roller 19 is not in the second raised position, then controlling the second cylinder 18 to drive the pressure roller 19 to move to the second raised position, and then controlling the first cylinder 7 to drive the support roller 9 to move from the first lowered position to the first raised position; before controlling the second cylinder 18 to drive the pressure roller 19 to move from the second raised position to the second lowered position, if it is determined that the support roller 9 is not in the first raised position, then controlling the first cylinder 7 to drive the support roller 9 to move to the first raised position, and then controlling the second cylinder 18 to drive the pressure roller 19 from the second raised position to the second lowered position.

[0066] In addition, each tube withdrawal device 200 includes two aforementioned support rollers 9 and two pressure rollers 19 corresponding to the two support rollers 9. The two pressure rollers 19 are respectively mounted on opposite ends of the lifting seat 15 and are arranged in a spaced relationship along the axial direction F1. In more detail, the reduction motor 20 disposed in the middle of the lifting seat 15 has its output shaft passing through the lifting seat 15 and then a first synchronous wheel 21 is installed. The first synchronous wheel 21 is connected to the second synchronous wheel 22 rotated and held by the lifting seat 15 via a first synchronous belt 25. The third synchronous wheel 23 coaxially fixed with the second synchronous wheel 22 is connected to the fourth synchronous wheel 24 rotated and held by the lifting seat 15 via a second synchronous belt 26. The aforementioned two pressure rollers 19 are coaxially fixed with the third synchronous wheel 23 and the fourth synchronous wheel 24, respectively. In this way, the rotation of the reduction motor 20 is transmitted to the two pressure rollers 19 via the corresponding synchronous wheels and synchronous belts, so that the two pressure rollers 19 rotate synchronously. In addition, the reduction motor 20 can be constructed in the form of a servo motor + reducer.

[0067] In other embodiments, the lifting seat 15 is installed to the movable seat 13 in a manner that it can be lifted and lowered and rotated around the aforementioned radial direction F2, and the rotation axis of the lifting seat 15 is located between the two pressure rollers 19. In this way, the lifting seat 15 will automatically rotate (swing) during the downward movement process according to the distance difference between the two pressure rollers 19 and the heat exchange tube AA, so that the two pressure rollers 19 press down different parts of the heat exchange tube AA with a balanced pressure.

Claims

1. A tube withdrawing device for a heat exchange tube processing equipment, the heat exchange tube processing equipment comprising a support assembly for supporting the heat exchange tube from below, characterized in that: The pipe withdrawal device comprises: a support roller, arranged below the heat exchange tube, and capable of being raised and lowered relative to the support assembly and having a first raised position and a first lowered position, wherein the support roller at the first lowered position is separated from the heat exchange tube supported by the support assembly, and the support roller at the first raised position lifts the heat exchange tube, thereby causing the heat exchange tube to leave the support assembly; a pressing roller, which is located above the heat exchange tube and is opposite to the supporting roller, and is capable of clamping the heat exchange tube in the up-down direction with the supporting roller in the first raised position, wherein each of the supporting roller and the pressing roller is capable of rotating around the radial direction of the heat exchange tube, and the radial direction is a horizontal direction; A first power device is connected to the pressing roller to drive the pressing roller to rotate around the radial direction.

2. The tube withdrawal device according to claim 1, characterized in that: The pressure roller can be raised and lowered relative to the support assembly and has a second raised position and a second lowered position. The pressure roller at the second lowered position and the support roller at the raised position clamp the heat exchange tube in the up and down directions, and the pressure roller at the second raised position is separated from the heat exchange tube.

3. The tube withdrawal device according to claim 2, characterized in that: The pipe withdrawal device comprises: A second power device, connected to the support roller, to drive the support roller to rise and fall; A third power device, connected to the pressing roller, to drive the pressing roller to rise and fall; A controller is electrically connected to the second power device and the third power device, and is configured to: Before controlling the second power device to drive the support roller to move from the first lowered position to the first raised position, determining that the pressure roller is in the second raised position; and Before controlling the third power device to drive the pressure roller to move from the second raised position to the second lowered position, it is determined that the support roller is in the first raised position.

4. The tube withdrawal device according to claim 3, characterized in that: The controller is configured to: Before controlling the second power device to drive the support roller to move from the first lowered position to the first raised position, if it is determined that the pressure roller is not in the second raised position, controlling the third power device to drive the pressure roller to move to the second raised position; Before controlling the third power device to drive the pressure roller to move from the second raised position to the second lowered position, if it is determined that the support roller is not in the first raised position, the second power device is controlled to drive the support roller to move to the first raised position.

5. The pipe withdrawal device according to any one of claims 2 to 4, characterized in that: The pipe withdrawal device comprises: A movable seat capable of moving relative to the heat exchange tube along the radial direction and having a retracted position and a non-retracted position; a lifting seat, mounted on the movable seat in a lifting manner, wherein the pressure roller is mounted on the movable seat in a rotatable manner about the radial direction, and the pressure roller is switched between the second raised position and the second lowered position by lifting and lowering the movable seat; Wherein, when the movable seat is in the non-retreat position, the pressure roller is located directly above the heat exchange tube; when the movable seat is in the retreat position, the pressure roller is offset from the heat exchange tube in the up-down direction.

6. The tube withdrawal device according to claim 5, characterized in that: The supporting roller and the pressing roller are respectively configured in two numbers, and the two pressing rollers are both mounted on the movable seat and are arranged spaced apart along the axial direction of the heat exchange tube.

7. The tube withdrawal device according to claim 6, characterized in that: The lifting seat is mounted to the movable seat in a manner of being rotatable about the radial direction, and a rotation axis of the lifting seat is located between the two pressing rollers.

8. A heat exchange tube processing equipment, characterized in that: include: The tube withdrawal device according to any one of claims 1 to 5; The support assembly.

9. The heat exchange tube processing equipment according to claim 8, characterized in that: The support assembly comprises: The roller pair includes a first roller and a second roller arranged along the radial direction of the heat exchange tube, each of the first roller and the second roller is capable of rotating around the axial direction of the heat exchange tube, wherein, when the support assembly supports the heat exchange tube from below, the outer peripheral surface of the heat exchange tube is in rolling contact with the outer peripheral surface of the first roller and the outer peripheral surface of the second roller, respectively.

10. The heat exchange tube processing equipment according to claim 9, characterized in that: The tube withdrawal device and the roller pair are respectively provided in plurality, and the support rollers in the plurality of tube withdrawal devices and the plurality of roller pairs are alternately arranged along the axial direction.

Images