Methods

Abstract

A method for winding a tube bundle (4) of a wound heat exchanger (1), comprising the following steps, which are executed in chronological order: a) winding (S1) at least two first heat exchanger tubes (5A, 5B) simultaneously onto a core tube (6) or a partially wound tube bundle (4'), such that a gap (36) is formed between the two first heat exchanger tubes (5A, 5B), and b) winding (S2) at least two second heat exchanger tubes (5C) simultaneously onto the core tube (6) or the partially wound tube bundle (4'), such that one of the second heat exchanger tubes (5C) is located in the gap (36).

Description

[0001] The present invention relates to a method for winding tube bundles for a wound heat exchanger.

[0002] A wound heat exchanger has a core tube on which heat exchanger tubes are wound in multiple layers to form a tube bundle. The heat exchanger tubes can be wound individually and sequentially onto the core tube or existing layers. For this winding process, a winding device can be used, which carries a trolley with a coil or reel of heat exchanger tubes. The core tube rotates about its central axis, and the trolley travels along the central axis, spirally winding the heat exchanger tubes. After securing the heat exchanger tubes to the core tube or existing layers, another heat exchanger tube is wound until one layer is completed. Then the next layer is wound.

[0003] Typically, these heat exchanger tubes are 70 to 150 meters long. For example, a single tube reel can hold 4,000 meters of such heat exchanger tubes. Applying the heat exchanger tubes, that is, moving the trolley from one end of the core tube to the other, takes approximately 4 to 5 minutes, depending on the length of the respective heat exchanger tube. This makes the winding process for manufacturing the tube bundle very time-consuming and therefore costly.

[0004] In view of this, one object of the present invention is to provide an improved method for winding tube bundles for a wound heat exchanger.

[0005] Therefore, a method for winding a tube bundle for a wound heat exchanger is proposed. The method includes the following steps, performed sequentially: a) simultaneously winding at least two first heat exchanger tubes onto a core tube or a partially wound tube bundle, such that a gap is formed between the two first heat exchanger tubes; and b) simultaneously winding at least two second heat exchanger tubes onto a core tube or a partially wound tube bundle, such that one of the second heat exchanger tubes is located in the gap.

[0006] By simultaneously winding at least two first heat exchanger tubes and at least two second heat exchanger tubes, the time required for winding the tube bundle can be significantly reduced.

[0007] A heat exchanger can also be called a heat exchanger. Specifically, this heat exchanger is a tube bundle heat exchanger, and therefore can also be called a tube bundle heat exchanger. The heat exchanger is constructed with respect to its axis of symmetry or central axis of rotation. The heat exchanger has a core tube on which a tube bundle is wound. The tube bundle consists of multiple tube layers, wound sequentially around the core tube. Therefore, the tube bundle is composed of multiple tube layers. The heat exchanger tubes are wound in a spiral or coiled shape around the central axis. Webs are evenly distributed around the central axis between the core tube and the first tube layer. The webs can be welded to the core tube. Webs are also arranged between the tube layers. The webs can be welded to the tube layers. The webs act as gaskets. Each web has multiple grooves in which the heat exchanger tubes are wound. The heat exchanger tubes can be, for example, stainless steel or aluminum tubes.

[0008] In this context, a "partially wound" tube bundle refers to a tube bundle that is not yet fully wound. The partially wound tube bundle is then further processed by applying additional layers to form the finished tube bundle. The difference between the first and second heat exchanger tubes described above is only that the first heat exchanger tube is wound around the second heat exchanger tube in time. Otherwise, the first and second heat exchanger tubes have the same structure. "Same structure" does not preclude the possibility that the first and second heat exchanger tubes may have different lengths. At least two first heat exchanger tubes are simultaneously wound onto the core tube or the partially wound tube bundle. Therefore, at least two second heat exchanger tubes are simultaneously wound onto the core tube or the partially wound tube bundle. However, it is also possible to simultaneously wind three, four, five, or more first or second heat exchanger tubes.

[0009] Steps a) and b) are performed "in chronological order," which specifically means that step a) finishes before step b) begins. In other words, before starting step b), all the first heat exchanger tubes are wound onto the core tube or the partially wound tube bundle along the entire length of the core tube or the partially wound tube bundle. The first and second heat exchanger tubes are wound "simultaneously," which specifically means that the first and second heat exchanger tubes are not wound individually and sequentially, but are all wound simultaneously onto the core tube or the partially wound tube bundle.

[0010] According to one embodiment, prior to step a), the web is attached to the core tube or a partially wound tube bundle, during step a), a first heat exchanger tube is wound thereon, and during step b), a second heat exchanger tube is wound thereon.

[0011] The number of webs is arbitrary. Preferably, the webs are evenly distributed around the central axis. Specifically, before step a), the webs are welded to the core tube. Subsequently, the tube layer is wound around the core tube using the first and second heat exchanger tubes. The webs are applied again to the tube layer before the first and second heat exchanger tubes are wound around the web again to form another tube layer.

[0012] According to another embodiment, the web has a groove in which a first heat exchanger tube is wound during step a) and a second heat exchanger tube is wound during step b).

[0013] Viewed along the central axis, the grooves are attached to the web plate at uniform intervals. However, this is not absolutely necessary. The grooves may also be unevenly spaced. The first and second heat exchanger tubes are inserted into the grooves. Thus, the first and second heat exchanger tubes are placed at uniform intervals.

[0014] According to another embodiment, the first heat exchanger tube and the second heat exchanger tube together form the tube layer of the tube bundle, wherein the tube bundle is formed by multiple tube layers, and wherein adjacent tube layers are wound at different winding angles to each other.

[0015] The tube bundle can have any number of tube layers. Each tube layer consists of a first heat exchanger tube and a second heat exchanger tube, arranged alternately along the central axis. Adjacent or adjacent tube layers have different winding angles. The winding angles are preferably equal in magnitude but different in sign. This specifically means that adjacent tube layers have opposite inclinations. In different tube layers, the grooves in the web can be arranged at different intervals. This allows for different inclinations or different winding angles of the heat exchanger tubes in different tube layers.

[0016] According to another embodiment, the web is disposed between adjacent tube layers.

[0017] Specifically, after the tube layer is completed, the web is applied to the completed tube layer, particularly by welding it to the tube layer. The next tube layer is then applied, with the web positioned between two adjacent or vertical tube layers.

[0018] According to another embodiment, during step a), the first heat exchanger tube is connected to the web via a first fastening bracket.

[0019] For this purpose, a first heat exchanger tube is inserted into a groove in the web, and a fastening bracket is placed around the first heat exchanger tube and connected to the web, specifically by welding. Each first fastening bracket may have a mating portion for engaging the first heat exchanger tube and two fastening portions. The fastening portions are connected to the web, specifically by welding.

[0020] According to another embodiment, during step b), the second heat exchanger tube is connected to the first fastening bracket via a second fastening bracket.

[0021] In other words, the second fastening bracket is not directly connected to the web, but rather connected to the first fastening bracket, specifically by welding. The first fastening bracket may have a fastening area extending from it. The second fastening bracket is welded to the fastening area of ​​the first fastening bracket.

[0022] According to another embodiment, prior to step a), the heat exchanger tube used as a conduit is wound onto the core tube or a partially wound tube bundle, wherein, during step a), one of the first heat exchanger tubes is guided onto the heat exchanger tube used as a conduit.

[0023] Heat exchanger tubes used as conduits are preferably manually wound onto the core tube or a partially wound tube bundle. The term "manual winding" for heat exchanger tubes used as conduits should be understood in particular to mean that the operator of the winding equipment manually controls the angular velocity or rotational speed of the core tube or partially wound tube bundle about the axis of rotation, as well as the travel speed of the winding device, to achieve the desired winding angle for the heat exchanger tubes used as conduits. The winding head of the winding device can be positioned manually. For example, grooves can be marked on the web in which the heat exchanger tubes used as conduits will be placed.

[0024] According to another embodiment, during step a), the first heat exchanger tube and during step b), the second heat exchanger tube are respectively wound onto the core tube or the partially wound tube bundle under preload.

[0025] Pre-tensioning of the heat exchanger tubes ensures that they are pressed against the core tube or partially wound tube bundle during winding. This pre-tensioning force can be generated using a winding head. For this purpose, the winding head may have one or more spring elements. When the heat exchanger tubes are withdrawn from the winding head, this is done against the spring force of the spring elements, which are, for example, compressed or pressed together.

[0026] According to another embodiment, during step a), the first heat exchanger tube is unwound from the tube shell during step b), wherein the first heat exchanger tube and the second heat exchanger tube are straightened to the core tube or the partially wound tube bundle before they are simultaneously wound.

[0027] The number of tubes is arbitrary. However, the number of tubes preferably corresponds to the number of heat exchanger tubes to be wound simultaneously. For example, four such tubes are provided. Each tube has a coil with the heat exchanger tubes. For example, each coil can carry 4000 meters of the corresponding heat exchanger tube. In particular, the brake is always actuated during the winding process so that the corresponding tube cannot follow in an undesirable manner, and the heat exchanger tubes can thus be wound together. A straightening unit is preferably provided to straighten the heat exchanger tubes. The straightening unit may have multiple straightening rollers between which the heat exchanger tubes are guided to straighten them. As mentioned above, the first and second heat exchanger tubes have the same structure. This specifically means that during step a), the first heat exchanger tube can be unwound from the same tube as the second heat exchanger tube during step b). After the first heat exchanger tube is unwound in step a), it is cut to a certain length so that the second heat exchanger tube can be unwound from the tube in step b).

[0028] According to another embodiment, the tube is braked during step a) and / or step b).

[0029] This prevents subsequent issues with the tubes when removing them from the tube shell. It also prevents the heat exchanger tubes from uncontrollably unwinding from the tube shell and from becoming tangled together.

[0030] According to another embodiment, the method is carried out by means of a winding device having a container rotating device by means of which, during steps a) and b), the core tube or partially wound tube bundle rotates about its central axis; and a winding device by means of which, during step a), the first heat exchanger tube and the second heat exchanger tube are simultaneously wound onto the core tube or the partially wound tube bundle during step b), wherein the winding device has a winding head by means of which the first heat exchanger tubes are arranged spaced apart from each other during step a), such that gaps are formed between two adjacent first heat exchanger tubes, and during step b), the second heat exchanger tubes are respectively accommodated therein.

[0031] The container rotation device is particularly suitable for carrying core tubes or partially wound tube bundles, with the central axis arranged horizontally. Using the container rotation device, the core tubes or partially wound tube bundles can rotate about the central axis at a specified angular velocity or rotational speed. The container rotation device particularly includes a rotary encoder, by which the angular position and angular velocity of the core tubes or partially wound tube bundles can be constantly detected. The angular velocity of the container rotation device can be varied arbitrarily. In other words, the core tubes or partially wound tube bundles can rotate faster or slower as needed. Using a winding device, heat exchanger tubes are fed into the core tubes or partially wound tube bundles and wound onto them. However, the heat exchanger tubes are not actively fed in by the winding device, but rather extracted from the winding device by means of the container rotation device. The winding device is configured to simultaneously supply multiple first heat exchanger tubes or multiple second heat exchanger tubes to the winding head. For example, the winding device can simultaneously provide two, three, four, five, or more first or second heat exchanger tubes, which can then be simultaneously wound onto a core tube or a partially wound tube bundle to form a tube layer in each case. The winding head is used to space the heat exchanger tubes apart such that there is at least a distance between two adjacent first heat exchanger tubes corresponding to at least one corresponding outer diameter of the heat exchanger tube. This distance corresponds to the gap between two first heat exchanger tubes in which a second heat exchanger tube is wound. Preferably, the winding head clamps the heat exchanger tubes such that the heat exchanger tubes can only be pulled out of or extracted from the winding head by applying a pulling force.

[0032] According to another embodiment, the winding device includes a four-joint cantilever having a transverse four-joint that carries the winding head, wherein sensor data relating to the deflection of the transverse four-joint is output from the transverse four-joint.

[0033] The winding equipment can be operated and controlled via the operation and control unit. For example, the operator of the winding equipment can operate the container rotating device and the winding device using the operation and control unit. In the undeflected state, the transverse four-joint has a rectangular geometry. From this undeflected state, the transverse four-joint can be transitioned to a deflected state, wherein the transverse four-joint has a parallel geometry. In this deflection state, the transverse four-joint generates sensor data, which gives conclusions about the magnitude and direction of the deflection. This sensor data is transmitted to the operation and control unit. The transverse four-joint preferably has two short legs and two long legs, wherein the short legs and long legs are rotatably connected together at the joint point, and wherein a rotary encoder is disposed at one of the joint points for generating the sensor data of the transverse four-joint. The two short legs are disposed between the two long legs. In other words, a short leg is always arranged between the two long legs, and a long leg is arranged between the two short legs. The winding head is assembled on one of the short legs. For example, the legs can be profile supports, particularly aluminum profile supports. The winding head is assembled at the end of the transverse four-joint.

[0034] According to one embodiment, during steps a) and b), the angular velocity of the container rotating device about the central axis and / or the travel speed of the winding device along the central axis are adjusted based on sensor data from the transverse four-joint.

[0035] If the transverse four-joint deflects, the angular velocity of the vessel rotation device can be increased or decreased depending on the magnitude and direction of the deflection. The same applies to the travel speed of the winding device. The transverse four-joint can compensate for tolerance deviations on the web, particularly regarding the grooves on the web where the heat exchanger tubes are wound, and speed deviations of the winding device. Furthermore, the transverse four-joint can compensate for tilting and / or positional errors of the heat exchanger tubes during winding.

[0036] According to another embodiment, the four-joint cantilever includes a sorting unit, wherein, during step a), the first heat exchanger tube and during step b), the second heat exchanger tube are placed on the core tube or a partially wound tube bundle by means of the sorting unit.

[0037] The sorting unit places the heat exchanger tubes into grooves in the web. For example, the sorting unit may have a rotatably supported guide roller. This guide roller preferably includes multiple guide grooves in which the heat exchanger tubes can be accommodated.

[0038] The word "one" here does not necessarily have to be understood as precisely limited to one element. On the contrary, multiple elements can be specified, such as two, three, or more. Any other numerical terms used here should not be interpreted as necessarily imposing a precise limit on the corresponding number of elements. Rather, upward and downward numerical deviations are permissible.

[0039] Other possible implementations of the method include combinations of features or implementations not explicitly mentioned in the descriptions above or below with respect to exemplary embodiments. In such cases, those skilled in the art will also add individual aspects as improvements or supplements to the corresponding basic form of the method.

[0040] Other advantageous designs of the method are the subject of the dependent claims and exemplary embodiments of the method described below. The method will now be described in more detail with reference to the accompanying drawings and preferred embodiments.

[0041] Figure 1 A schematic partial perspective sectional view of an embodiment of a wound heat exchanger is shown;

[0042] Figure 2 It shows according to Figure 1 A schematic detailed view of the heat exchanger;

[0043] Figure 3 It shows according to Figure 1 Another schematic detailed view of the heat exchanger;

[0044] Figure 4 A diagram showing the method for winding according to Figure 1 A schematic perspective view of the winding equipment for a heat exchanger;

[0045] Figure 5 It shows according to Figure 4 A schematic side view of the winding equipment;

[0046] Figure 6 It shows according to Figure 5 A schematic cross-sectional view of the winding equipment along section lines VI-VI;

[0047] Figure 7 It shows according to Figure 6 View VII;

[0048] Figure 8 It shows according to Figure 4 A top view of an embodiment of the four-joint cantilever winding device shown;

[0049] Figure 9 It shows the method for using according to Figure 4 A schematic perspective view of an embodiment of the winding head of a winding device; and

[0050] Figure 10 It shows according to Figure 1 A schematic block diagram illustrating an embodiment of a method for winding a tube bundle for a heat exchanger.

[0051] In these figures, unless otherwise specified, the same or functionally equivalent elements are indicated by the same reference numerals.

[0052] Figure 1 A schematic partial perspective sectional view of an embodiment of the wound heat exchanger 1 is shown.

[0053] Heat exchanger 1 can also be called a heat exchanger. Specifically, heat exchanger 1 is a tube bundle heat exchanger, and therefore can also be called a tube bundle heat exchanger. Heat exchanger 1 is distributed with a symmetrical or central axis 2, and heat exchanger 1 can be constructed at least segmentally with respect to rotational symmetry. In addition, heat exchanger 1 has a radial direction 3. Radial direction 3 is perpendicular to the central axis 2 and points towards it.

[0054] Heat exchanger 1 has a tube bundle 4, which is constructed to be substantially rotationally symmetrical about its central axis 2. The tube bundle 4 has multiple heat exchanger tubes 5. Figure 1 Only one of them is marked with a reference numeral. The heat exchanger tubes 5 are spirally wound in multiple layers around the core tube 6 of the heat exchanger 1, which extends along the central axis 2, so that the tube bundle 4 has multiple tube layers 7. Viewed from the radial direction 3, the heat exchanger tubes 5 are placed one after another. The heat exchanger tubes 5 are suitable for containing at least one first fluid medium M1.

[0055] Between the innermost tube layer 7 and the core tube 6 of the tube bundle 4 relative to the radial direction 3, and between two adjacent tube layers 7 of the tube bundle 4 along the radial direction 3, a plurality of web plates 8 are arranged, which are preferably constant in the circumferential direction of the tube layer 7. Figure 1 Only one is indicated by the reference numerals in the attached drawing. In other words, the same number of webs 8 are provided between two adjacent tube layers 7 in the radial direction 3. The webs 8 extend along the central axis 2 and are arranged vertically along the radial direction 3.

[0056] The tube bundle 4 is surrounded by a cylindrical sheath 9, which defines a sheath chamber 10 in which the tube bundle 4 is arranged together with the core tube 6. For example, a second fluid medium M2 can be introduced into the sheath chamber 10 through an inlet nozzle 11 or discharged from the sheath chamber 10 through an outlet nozzle 12, so that the first medium M1 and the second medium M2 can indirectly exchange heat with each other during the operation of the heat exchanger 1.

[0057] The heat exchanger tubes 5 can be divided into several tube groups, each equipped with inlet nozzles 13, 14, and 15 through which the first medium M1 can be supplied, and outlet nozzles 16, 17, and 18 through which the first medium M1 can be extracted. In this case, three tube groups are provided accordingly. For example, the three inlet nozzles 13, 14, and 15 and the three tube groups can also be equipped with different first media M1. In addition, the tube bundle 4 can be surrounded by a cylindrical sleeve 19, which is used to suppress bypass flow around the tube bundle 4 in the sheath chamber 10.

[0058] Figure 2 A schematic perspective detail of heat exchanger 1 is shown. Figure 3Another detailed view of heat exchanger 1 is shown below. See also the following... Figure 2 and Figure 3 .

[0059] Specifically Figure 2 One of the webs 8 of one of the heat exchanger tubes 5 is shown. The web 8 extends along the central axis 2. The cross-sectional shape of the web 8 can be T-shaped or L-shaped. It is assumed here that the web 8 has an L-shaped cross-sectional geometry. The web 8 includes a long or first leg 20 (in this example, which is connected to the core tube 6, particularly welded) and a short or second leg 21 perpendicular to the first leg 20. The first leg 20 has a first or lower contact surface 22 against which the core tube 6 abuts, and a second or upper contact surface 23, away from the lower contact surface 22, and thus away from the core tube 6. The heat exchanger tube 5 can rest on the upper contact surface 23.

[0060] The web plate 8 has multiple grooves 24 on the second leg 21. Figure 2 Only one is shown. The heat exchanger tube 5 is located in the groove 24. Therefore, the geometry of the groove 24 can match the external geometry of the heat exchanger tube 5. Along the web 8, and therefore also along the central axis 2, many such grooves 24 are evenly spaced or equidistant from each other. However, this is not absolutely necessary. The grooves 24 may also be unevenly spaced from each other. As mentioned earlier, Figure 2 Only one groove 24 is shown. The heat exchanger tube 5 has an outer surface 25, and the heat exchanger tube 5 can rest in the groove 24 on the second leg 21.

[0061] The heat exchanger tube 5 is connected to the web plate 8 via a first fastening bracket 26. The first fastening bracket 26 surrounds the heat exchanger tube 5. Because the first fastening bracket 26 surrounds the heat exchanger tube 5, it can also be referred to as a full bracket. The first fastening bracket 26 has a mating portion 27 that abuts against the outer surface 25 of the heat exchanger tube 5, and two fastening portions 28, 29 ( Figure 3 It is connected to the web plate 8, particularly the first leg 20 of the web plate 8, and is welded together. The joint portion 27 is provided between the fastening portions 28 and 29.

[0062] The joint portion 27 has two first fastening regions 30, 31. The first fastening regions 30, 31 are convexly curved and thus extend outward from the joint portion 27. However, the outer surface 25 of the heat exchanger tube 5 does not abut against the inner side of the first fastening regions 30, 31. Therefore, the first fastening regions 30, 31 are hollow on their inner side (i.e., facing the outer surface 25). In other words, each of the first fastening regions 30, 31 has a recess facing the outer surface 25. This can be achieved by molding the first fastening regions 30, 31 onto a sheet-like metal semi-finished product of the first fastening support 26 using a forming manufacturing method, such as deep drawing. This geometry of the first fastening regions 30, 31 prevents or at least reduces heat entering the heat exchanger tube 5 during welding operations on the fastening regions 30, 31.

[0063] Furthermore, the connecting portion 27 has two second fastening areas 32, 33, through which the first fastening bracket 26 can be connected. Figure 2 Another web 8, not shown, is welded in particular. Viewed along the radial direction 3, this other web 8 is relative to... Figure 2 The web 8 shown is radially offset outwards. The structure of the second fastening regions 32 and 33 is similar to that of the first fastening regions 30 and 31. This means that the second fastening regions 32 and 33 will not rest on the outer surface 25 of the heat exchanger tube 5.

[0064] Viewed along the symmetrical or central axis 34 of the heat exchanger tube 5, the first fastening regions 30 and 31 are at the same height. Therefore, the first fastening regions 30 and 31 are staggered when viewed along the circumferential direction 35 of the heat exchanger tube 5. On the other hand, the second fastening regions 32 and 33 are staggered when viewed along the central axis 34, but are located at the same circumferential position when viewed along the circumferential direction 35. Viewed along the central axis 34, the first fastening regions 30 and 31 are located between the second fastening regions 32 and 33. Viewed along the circumferential direction 35, the second fastening regions 32 and 33 are located between the first fastening regions 30 and 31.

[0065] Figure 3 Two tube layers 7A and 7B, as described above, are shown, stacked together radially in the direction 3. The tube bundle 4 has any number of tube layers 7A and 7B. As mentioned above, each tube layer 7A and 7B is assigned webs 8A and 8B. Viewed radially in the direction 3, web 8A is closer to the central axis 2 than web 8B. Web 8A can be... Figure 3 The core tube 6, not shown, is connected, particularly by welding.

[0066] Each tube layer 7A, 7B has a first heat exchanger tube 5A, 5B and a second heat exchanger tube 5C. The first heat exchanger tubes 5A, 5B and the second heat exchanger tube 5C have the same structure. "Same structure" does not preclude the possibility that the first heat exchanger tubes 5A, 5B and the second heat exchanger tube 5C have different lengths. The only difference between the first heat exchanger tubes 5A, 5B and the second heat exchanger tube 5C is that the first heat exchanger tubes 5A, 5B are wound around the second heat exchanger tube 5C in time. In other words, the first heat exchanger tubes 5A, 5B are first wound around the corresponding webs 8A, 8B simultaneously, and then the second heat exchanger tube 5C is wound around the corresponding webs 8A, 8B simultaneously. The heat exchanger tubes 5A, 5B, 5C are accommodated in the grooves 24 of the webs 8A, 8B. Figure 2 In the heat exchanger, tubes 5A, 5B, and 5C are coiled or spiraled around the central axis 2.

[0067] The corresponding numbers of the first heat exchanger tubes 5A, 5B and the second heat exchanger tubes 5C are arbitrary. For example, two, three, four, five or more first heat exchanger tubes 5A, 5B and two, three, four, five or more second heat exchanger tubes 5C can be provided. The number of first heat exchanger tubes 5A, 5B and the number of second heat exchanger tubes 5C are preferably the same. The arrangement of the heat exchanger tubes 5A, 5B, 5C is such that a second heat exchanger tube 5C is always provided between two first heat exchanger tubes 5A, 5B, and a first heat exchanger tube 5A, 5B is always provided between two second heat exchanger tubes 5C. This can be achieved by winding the first heat exchanger tubes 5A, 5B around the corresponding webs 8A, 8B, such that a gap 36 with a groove 24 is always left between two first heat exchanger tubes 5A, 5B. The second heat exchanger tubes 5C are then wound around these gaps 36.

[0068] After the first heat exchanger tubes 5A and 5B are wound, they are secured to the corresponding webs 8A and 8B using the first fastening bracket 26. For this purpose, fastening portions 28 and 29 are welded to the corresponding webs 8A and 8B via welding points 37 and 38. If the first heat exchanger tubes 5A and 5B are secured to the corresponding webs 8A and 8B, the second heat exchanger tube 5C is wound in the gap 36 and secured to the first fastening bracket 26 by means of the second fastening bracket 39. This means that the second fastening bracket 39 is not connected to the corresponding webs 8A and 8B, but rather to two adjacent first fastening brackets 26. For this purpose, the second fastening bracket 39 is welded to the first fastening areas 30 and 31 of the first fastening bracket 26 via welding points 40 and 41. The second fastening bracket 39 can also be referred to as a bracket cap.

[0069] Before winding the first heat exchanger tubes 5A and 5B, another heat exchanger tube 5 (not shown) can be wound as a conduit at a desired inclination relative to the central axis 2. Then, the inclination of the first heat exchanger tubes 5A and 5B relative to the central axis 2 is aligned with that of the heat exchanger tube 5 used as a conduit. The second heat exchanger tube 5C is aligned with the first heat exchanger tubes 5A and 5B during winding.

[0070] After the tube layer 7A is fully wound, multiple web plates 8B are placed on the first fastening bracket 26 of the tube layer 7A and welded to the first fastening bracket 26 on the second fastening areas 32, 33. Then, the tube layer 7B is wound onto the web plate 8B, and the heat exchanger tubes 5A, 5B, 5C of the tube layer 7B are connected to the web plate 8B. The heat exchanger tubes 5A, 5B, 5C of different tube layers 7A, 7B have different, and particularly opposite, orientations relative to the central axis 2. In different tube layers 7A, 7B, the grooves 24 of the web plates 8A, 8B can be arranged at different intervals. In this way, different inclinations of the heat exchanger tubes 5A, 5B, 5C can be achieved in different tube layers 7A, 7B.

[0071] The heat exchanger tubes 5A, 5B, and 5C are inserted into the tube bottoms 42 and 43 of inlet nozzles 13, 14, and 15 or outlet nozzles 16, 17, and 18 at one end before winding and the other end after winding. Figure 1 ) and connect it, especially by welding. Figure 1 Only the tube bottoms 42 and 43 of the inlet nozzles 13 and 15 are shown. However, each inlet nozzle 13, 14, and 15 and each outlet nozzle 16, 17, and 18 has such tube bottoms 42 and 43.

[0072] Figure 4 A schematic perspective view of an embodiment of a winding device 100 for winding a heat exchanger 1 is shown. Figure 5 A schematic side view of the winding apparatus 100 is shown. See also the following... Figure 4 and Figure 5 .

[0073] The winding equipment 100 includes a container rotating device 101 for rotating the core tube 6 or a partially wound tube bundle 4' about a central axis 2, such as Figure 4 As indicated by the double arrow 102, the central axis 2 serves as a rotation axis. Therefore, the central axis 2 can also be referred to as the rotation axis. The container rotation device 101 has a rotary encoder 103, which detects the rotational speed and angular position of the core tube 6 or the partially wound tube bundle 4'. Furthermore, the winding device 100 is equipped with a leakage protection device 104, which holds the core tube 6 or the partially wound tube bundle 4' in place along the central axis 2. Worktables 105 and 106 can be arranged on both sides of the container rotation device 101.

[0074] The winding equipment 100 has a winding device 107 having a reel carriage 110 guided on running tracks 108, 109, which can travel along the running tracks 108, 109 by means of a drive 111 (particularly including a motor), such as Figure 4 As indicated by the double arrow 112. The running tracks 108 and 109 are flat and precisely assembled on the workshop floor 113, and are sized to withstand external forces. The running track surfaces of the running tracks 108 and 109 ensure the smooth operation of the reel carriage 110. The winding device 107 is equipped with a withdrawal safety device to prevent the winding device 107 from tipping over towards the heat exchanger tubes 5, 5A, 5B, and 5C under excessive tension.

[0075] The drive 111 engages with a rack (not shown), which moves the reel carriage 110 along running tracks 108 and 109. A rotary encoder 114 detects the position of the reel carriage 110 along the running tracks 108 and 109. Power is preferably supplied to the drive 111 via a cable trailer.

[0076] The reel turret 116 is rotatably mounted on the reel carriage 110 via a rotating ring 115. The rotating ring 115 is continuously adjustable within a range of ±30° perpendicular to the central axis 2 and is permanently clamped. A sliding member 117 is linearly and slidably supported along the reel turret 116. The sliding member 117 can slide across the entire height of the reel turret 116 and is locked at the desired height by bolts. Alternatively, the sliding member 117 can be steplessly adjusted in height using a spindle drive.

[0077] Multiple cantilever arms 118 and 119 are attached to the sliding member 117. For example, two cantilever arms 118 and 119 are provided. However, the number of cantilever arms 118 and 119 is arbitrary. Each cantilever arm 118 and 119 carries two tube coils 120, 121, 122, and 123. The number of tube coils 120, 121, 122, and 123 is arbitrary. Each tube coil 120, 121, 122, and 123 carries a coil of heat exchanger tubes 5, 5A, 5B, and 5C to be wound. If four heat exchanger tubes 5, 5A, 5B, and 5C are wound simultaneously, four tube coils 120, 121, 122, and 123 are provided. Each tube 120, 121, 122, 123 has a brake 124, 125 for braking the corresponding tube 120, 121, 122, 123 to prevent the tube 120, 121, 122, 123 from following when the binding stops.

[0078] The heat exchanger tubes 5, 5A, 5B, and 5C, which extend from the tube shells 120, 121, 122, and 123, are fed into the straightening unit 126. Figure 7This is used to straighten the heat exchanger tubes 5, 5A, 5B, and 5C, which are unfolded from the tube cylinders 120, 121, 122, and 123. From the straightening unit 126, the oriented heat exchanger tubes 5, 5A, 5B, and 5C are fed into the core tube 6 or the partially wound tube bundle 4' via a four-joint cantilever 127, which only... Figure 5 The diagram is schematically shown. The straightening unit 126 can be mounted on a four-joint cantilever 127. The four-joint cantilever 127 is supported on the reel tower 116 or the slider 117 in a backlash-free, rotatable, and lockable manner. The four-joint cantilever 127 can be mounted on the reel tower 116 or the slider 117 using a four-joint arm.

[0079] The winding apparatus 100 also includes an operation and control unit 128 for operating and controlling the winding apparatus 100. Sensor data from rotary encoders 103 and 114 are provided to the operation and control unit 128. With the aid of the operation and control unit 128, the container rotating device 101 and the winding device 107 can be operated or controlled.

[0080] Figure 8 A top view of an embodiment of the aforementioned four-joint cantilever 127 is shown.

[0081] The four-joint cantilever 127 may have a support 129 connected to the winding tower 116 or the sliding member 117. A transverse four-joint 130 is assembled onto the support 129, facing away from the winding tower 116. The transverse four-joint 130 has a winding head 131 for winding heat exchanger tubes 5, 5A, 5B, 5C onto the core tube 6 or a partially wound tube bundle 4'. The winding head 131, in turn, carries another support 132 to which the sorting unit 133 is attached.

[0082] Support 132 extends beyond sorting unit 133 and can be grasped by operator of winding equipment 100 from workbench 106 to manually guide four-joint cantilever 127. For this purpose, a handle can be attached to the end of support 132. Additionally, control elements (e.g., in the form of a touchscreen) can also be attached to the end of support 132 for operating operation and control unit 128, thereby operating winding equipment 100.

[0083] The transverse four-joint 130 includes two short legs 134 and 135 and two long legs 136 and 137, which are hinged together at joint points 138, 139, 140, and 141, allowing the transverse four-joint 130 to... Figure 8 The solid line shown indicates the undeflected state (labeled with reference numeral 130) moving to... Figure 8 The deflection state indicated by the dashed line (labeled with reference numeral 130') is the same as the reverse. The winding head 131, together with the support member 132 and the sorting unit 133, pivots, as shown. Figure 8The dashed lines and reference numerals 131', 132', and 133' in the figure are shown.

[0084] The transverse four-joint 130 also includes a rotary encoder 142, attached to one of the joint points 138, 139, 140, and 141, for detecting the deflection of the transverse four-joint 130, particularly the deflection angle. Sensor data from the rotary encoder 142 is provided to the operation and control unit 128. The transverse four-joint 130 is connected to the support member 129 via a short leg 134. A winding head 131 is assembled on the short leg 135. The structure of the winding head 131 will be explained below. The winding head 131 is used to wind the heat exchanger tubes 5, 5A, 5B, and 5C with preload onto the webs 8, 8A, and 8B, maintaining appropriate distances between them.

[0085] The sorting unit 133 ensures that the heat exchanger tubes 5, 5A, 5B, and 5C are correctly wound into the grooves 24 of the webs 8, 8A, and 8B. For this purpose, the sorting unit 133 has a guide roller 144 rotatable about a rotation axis 143. The guide roller 144 has multiple guide grooves 145 that rotate about the rotation axis 143. Figure 8 Only one of them is marked with an attached reference numeral. The number of guide slots 145 is arbitrary. For example, during the operation of the winding device 100, each second guide slot 145 accommodates one heat exchanger tube 5, 5A, 5B, 5C.

[0086] The support 132 may have a joint that allows the support 132 to pivot at least in sections, such that the support 132 at least in sections surrounds the core tube 6 or the partially wound tube bundle 4', and the guide roller 144 can correctly position the heat exchanger tubes 5, 5A, 5B, 5C.

[0087] With the aid of the four-joint cantilever 127, heat exchanger tubes 5, 5A, 5B, and 5C can be wound at winding angles α and β inclined relative to the central axis 2. For example, tube layer 7A is wound at a first winding angle α, and tube layer 7B is wound at a second winding angle β. The winding angles α and β of different tube layers 7A and 7B are equal in magnitude but different in sign. The winding angles α and β are less than 90°. For example, the winding angles α and β are 60 to 80° respectively.

[0088] Figure 9 A schematic perspective view of an embodiment of the winding head 131 described above is shown.

[0089] The winding head 131 includes a base 146 connected to a short support leg 135 of a transverse four-joint 130. A support member 132 is fastened to the base 146 along with a sorting unit 133. Two rod-shaped guide elements 147 and 148 are assembled onto the base 146. Figure 9 As indicated by arrow 150, the lower part 149 of the winding head is linearly and slidably supported on guide elements 147 and 148.

[0090] The lower part 149 of the winding head is pre-tensioned to the base 146 by two spring elements 151 and 152, which can overcome the spring force of the spring elements 151 and 152 and move away from the base 146 in the direction of arrow 150. The spring elements 151 and 152 are pushed onto the guide elements 147 and 148. With the help of the spring elements 151 and 152, the pre-tensioning force can be applied to the heat exchanger tubes 5, 5A, 5B, and 5C to be wound. The guide elements 147 and 148 and the spring elements 151 and 152 are respectively arranged on both sides of the lower part 149 of the winding head.

[0091] Multiple lower guide rollers 153, 154, and 155 for guiding heat exchanger tubes 5, 5A, 5B, and 5C are rotatably supported in or on the lower part 149 of the winding head. Each lower guide roller 153, 154, and 155 has multiple guide grooves 156, in... Figure 9 Only one of them is marked with a reference numeral. During the operation of the winding head 131, the heat exchanger tubes 5, 5A, 5B, and 5C are guided in the guide slots 156. The number of guide slots 156 is arbitrary. For example, during the operation of the winding head 131, only every other guide slot 156 is occupied by the heat exchanger tubes 5, 5A, 5B, and 5C. The guide slots 156 are arranged spaced apart from each other, such that, for example, the first heat exchanger tubes 5A and 5B can be wound onto the core tube 6 or the partially wound tube bundle 4' with a gap 36 between them.

[0092] Furthermore, a fixed lower guide element 157 is assembled on the lower part 149 of the winding head, and it has multiple guide grooves 158. Figure 9 Only one is marked with an appendix reference numeral. The number of guide grooves 158 of the lower guide element 157 corresponds to the number of guide grooves 156 of the lower guide rollers 153, 154, and 155. With the aid of the lower guide element 157, heat exchanger tubes 5, 5A, 5B, and 5C are fed into the lower guide rollers 153, 154, and 155 in the direction of arrow 150.

[0093] The upper part 160 of the winding head is pivotally connected to the lower part 149 of the winding head via a hinge 159. Therefore, by means of the hinge 159, the winding head 131 can be... Figure 9 The open state shown can be moved to the closed state, and vice versa. With the help of the closures 161 and 162, the lower part 149 of the winding head and the upper part 160 of the winding head can be locked to each other in the closed state.

[0094] Multiple upper guide rollers 163, 164, and 165 for guiding heat exchanger tubes 5, 5A, 5B, and 5C are rotatably supported in or on the upper part 160 of the winding head. Each upper guide roller 163, 164, and 165 has multiple guide grooves 166. Figure 9Only one of them is marked with an appendix reference numeral. The upper guide rollers 163, 164, 165 of the upper part 160 of the winding head and the lower guide rollers 153, 154, 155 of the lower part 149 of the winding head are staggered from each other, such that the upper guide rollers 163, 164, 165 of the upper part 160 of the winding head are always positioned between the two lower guide rollers 153, 154, 155 of the lower part 149 of the winding head, and vice versa. During the operation of the winding head 131, the heat exchanger tubes 5, 5A, 5B, 5C are placed between the upper guide rollers 163, 164, 165 of the upper part 160 of the winding head and the lower guide rollers 153, 154, 155 of the lower part 149 of the winding head, and are in particular clamped.

[0095] Therefore, during the operation of the winding head 131, the heat exchanger tubes 5, 5A, 5B, and 5C are guided in the guide slots 166. The number of guide slots 166 is arbitrary. However, the number of guide slots 166 corresponds to the number of guide slots 156. For example, during the operation of the winding head 131, only every other guide slot 166 is occupied by the heat exchanger tubes 5, 5A, 5B, and 5C. The guide slots 166 are spaced apart from each other such that, for example, the first heat exchanger tubes 5A and 5B can be wound onto the core tube 6 or the partially wound tube bundle 4' with a gap 36 between them, respectively. In other words, the winding head 131 arranges the first heat exchanger tubes 5A and 5B such that a gap 36 is always present between two adjacent first heat exchanger tubes 5A and 5B. The same applies to the second heat exchanger tube 5C.

[0096] In addition, a fixed upper guide element 167 is assembled on the upper part 160 of the winding head, which has multiple guide grooves 168. Figure 9 Only one is marked with an appendix reference numeral. The number of guide grooves 168 of the upper guide element 167 corresponds to the number of guide grooves 166 of the upper guide rollers 163, 164, and 165. With the aid of the two guide elements 157 and 167, the heat exchanger tubes 5, 5A, 5B, and 5C are fed into the guide rollers 153, 154, 155, 163, 164, and 165 in the direction of arrow 150.

[0097] The following will combine Figure 3 The tube layers 7A and 7B shown briefly illustrate the operation of the winding equipment 100. The core tube 6 or the partially wound tube bundle 4' is located in the container rotating device 101. The coils of heat exchanger tubes 5, 5A, 5B, and 5C are housed in the tube cylinders 120, 121, 122, and 123 of the winding device 107. The core tube 6 or the partially wound tube bundle 4' has multiple welded webs 8A on its exterior.

[0098] To begin tube layer 7A, heat exchanger tube 5, which serves as a conduit, is pulled from one of tube shells 120, 121, 122, and 123 and secured to inlet nozzles 13, 14, and 15. Figure 1The heat exchanger tube 5, used as a conduit, is positioned on one of the tube bottoms 42 or 43 of the outlet nozzles 16, 17, or 18 to prevent it from being pulled out of the core tube 6 or the partially wound tube bundle 4'. Subsequently, the heat exchanger tube 5, used as a conduit, is wound at a desired angle α. Figure 8 The heat exchanger tubes 5, which serve as conduits, are manually wound onto the web 8A, wherein the heat exchanger tubes 5, which serve as conduits, are located in the grooves 24 of the web 8A. The heat exchanger tubes 5, which serve as conduits, are fastened to each web 8A by a first fastening bracket 26.

[0099] The fact that the heat exchanger tube 5 used as a conduit is “manually wound” should be understood here as the operator of the winding equipment 100 manually controlling the angular velocity or rotational speed of the container rotating device 101 by means of the operation and control unit 128, in particular by means of the aforementioned operating elements of the operation and control unit 128, rotating the core tube 6 or the partially wound tube bundle 4' about the central axis 2, and manually controlling the travel speed of the winding reel carriage 110 along the running tracks 108, 109 to obtain the desired winding angle α.

[0100] During manual winding, the four-joint cantilever 127, equipped with a winding head 131 and a sorting unit 133, is manually guided by the operator. For this purpose, the operator can grasp the support 132 from the workbench 106 using the four-joint cantilever 127. Before manual winding, the grooves 24 that must be inserted into the heat exchanger tubes 5, which serve as conduits, can be marked to achieve the desired winding angle α.

[0101] If the heat exchanger tube 5, used as a conduit, is wound at a desired winding angle α over the entire length of the core tube 6 or the partially wound tube bundle 4', and connected to the web 8A by means of a plurality of first fastening supports 26, then the heat exchanger tube 5 used as a conduit is shortened and connected to one of the tube bottoms 42, 43 of the inlet nozzles 13, 14, 15 or the outlet nozzles 16, 17, 18. Then the actual winding process of the tube layer 7A can begin with the first heat exchanger tubes 5A, 5B and the second heat exchanger tube 5C.

[0102] To wind the tube layer 7A, the four tube sleeves 120, 121, 122, and 123 of the four first heat exchanger tubes 5A and 5B are fed into the winding head 131, which maintains a certain distance from each other, allowing the second heat exchanger tube 5C to be inserted between two of the first heat exchanger tubes 5A and 5B respectively. Before the winding process, the first heat exchanger tubes 5A and 5B are connected to one of the tube bottoms 42 and 43 of the inlet nozzles 13, 14, and 15 or the outlet nozzles 16, 17, and 18. All the first heat exchanger tubes 5A and 5B are wound simultaneously.

[0103] The first heat exchanger tubes 5A and 5B are fastened to one of the webs 8A by a first fastening bracket 26. One of the first heat exchanger tubes 5A and 5B is placed on the heat exchanger tube 5, which serves as a conduit, and is guided by it during winding. The first heat exchanger tubes 5A and 5B, which abut against the heat exchanger tube 5 serving as a conduit, are fastened to the web 8A by modified fastening brackets (not shown), wherein one side of these modified fastening brackets is connected to the web 8A, and the other side is connected to one of the first fastening regions 30 and 31 of the first fastening bracket 26 of the heat exchanger tube 5 serving as a conduit, and in particular, they are welded together.

[0104] The core tube 6 or the partially wound tube bundle 4' is rotated about the central axis 2 using the container rotating device 101. In this way, the first heat exchanger tubes 5A and 5B are drawn out from the tube shells 120, 121, 122, and 123, and can be continuously braked by brakes 124 and 125. Brakes 124 and 125 prevent unnecessary subsequent operation of the first heat exchanger tubes 5A and 5B. Brakes 124 and 125 can be adjusted by the operation and control unit 128.

[0105] The straightening unit 126 straightens the first heat exchanger tubes 5A and 5B before they are fed into the winding head 131, spacing them apart so that they can be sorted into the grooves 24 of the web 8A by means of the sorting unit 133. The winding head 131 holds the first heat exchanger tubes 5A and 5B in a pre-tensioned state by means of spring elements 151 and 152, wherein the first heat exchanger tubes 5A and 5B are pulled out of the winding head 131 in the extraction direction 169. The extraction direction 169 is from the winding head 131 toward the central axis 2.

[0106] As the core tube 6 or the partially wound tube bundle 4' begins to rotate, the reel carriage 110 travels along the running tracks 108 and 109. The travel speed of the reel carriage 110 depends on the angular velocity of the core tube 6 or the partially wound tube bundle 4', and on the winding angle α specified by the heat exchanger tube 5 used as a conduit.

[0107] The travel speed of the reel carriage 110 can be detected by a rotary encoder 114, while the angular velocity of the core tube 6 or the partially wound tube bundle 4' can be detected by a rotary encoder 103. The angular velocity of the core tube 6 or the partially wound tube bundle 4', or the deflection of the transverse quad joint 130, can be used as a guide variable for the travel speed of the reel carriage 110. The transverse quad joint 130 can compensate for tolerance deviations on the web 8A, particularly regarding the positioning of the groove 24 on the web 8A, and speed deviations of the reel carriage 110.

[0108] The transverse four-joint 130 can also compensate for tilting and / or positional errors of the first heat exchanger tubes 5A and 5B during the winding process. Based on the distance and direction of the deflection of the transverse four-joint 130 (which is detected by the rotary encoder 142), the angular velocity of the core tube 6 or the partially wound tube bundle 4' and / or the travel speed of the reel carriage 110 can be adjusted so that the first heat exchanger tubes 5A and 5B are located in their associated grooves 24, and always ensure that one of the first heat exchanger tubes 5A and 5B is in contact with the heat exchanger tube 5 used as a conduit.

[0109] During the winding process of the first heat exchanger tubes 5A and 5B, the operator can control the four-joint cantilever 127 with the winding head 131 and sorting unit 133 from the workbench 106 and make corrections if necessary.

[0110] If the first heat exchanger tubes 5A, 5B are wound around the web 8A at a desired winding angle α along the entire length of the core tube 6 or the partially wound tube bundle 4' and connected to the web 8A by means of a plurality of first fastening brackets 26, then the first heat exchanger tubes 5A, 5B are cut off and connected to the tube bottoms 42, 43 of the inlet nozzles 13, 14, 15 or the outlet nozzles 16, 17, 18.

[0111] The first heat exchanger tubes 5A and 5B are now fixed to the web 8A, such that, as previously described, the gap 36 of the second heat exchanger tube 5C is... Figure 3 The first fastening bracket 26 is always positioned between the two first heat exchanger tubes 5A and 5B. This gap 36 is absent only between the first heat exchanger tubes 5A and 5B that abut against the heat exchanger tube 5 used as a conduit and the heat exchanger tube 5 used as a conduit. High strength of the finished tube bundle 4 is achieved by directly connecting the first fastening bracket 26 to the web 8A.

[0112] Then, for example, four second heat exchanger tubes 5C are simultaneously wound, placed in the gap 36 between the first heat exchanger tubes 5A and 5B, and guided onto them. The winding process itself is similar to the winding process mentioned earlier with respect to the first heat exchanger tubes 5A and 5B. The second heat exchanger tubes 5C are secured by a plurality of second fastening supports 39 ( Figure 3 The tubes are fixed and connected to the first fastening areas 30, 31 of the first fastening bracket 26, specifically by welding. Subsequently, the second heat exchanger tube 5C is cut and connected to the tube bottoms 42, 43 of the inlet nozzles 13, 14, 15 or the outlet nozzles 16, 17, 18. Tube layer 7A is now complete.

[0113] To begin the next tube layer 7B, multiple webs 8B are first connected to the first fastening bracket 26. For this purpose, the webs 8B are welded to the second fastening regions 32, 33 of the first fastening bracket 26. The webs 8B serve as spacers between tube layers 7A, 7B. Tube layer 7B can then be wound—as explained previously regarding tube layer 7A. However, unlike tube layer 7A, tube layer 7B is wound at a winding angle β, which is opposite to the winding angle α. Therefore, tube layers 7A, 7B are wound at different inclinations.

[0114] The winding process is carried out with alternating tube layers 7A and 7B until tube bundle 4 is completed. Subsequently, sleeve 19 is assembled. Figure 1 The tube bundle 4 is wound with sheath 9, inlet nozzles 13, 14, 15 and outlet nozzles 16, 17, 18, and heat exchanger tubes 5, 5A, 5B, 5C, especially in fluid connection with inlet nozzles 13, 14, 15 and outlet nozzles 16, 17, 18. Since multiple first heat exchanger tubes 5A, 5B and multiple second heat exchanger tubes 5C are wound simultaneously, significant time can be saved when winding the tube bundle 4.

[0115] Figure 10 A schematic block diagram illustrating an embodiment of the method for winding the tube bundle 4 is shown.

[0116] This method is performed using a winding device 100. The method is used to execute the winding process described above. The method includes a first step S1 and a second step S2. Steps S1 and S2 are executed sequentially in time. Specifically, this means that the first step S1 is executed before the second step S2, and the second step S2 is executed after the first step S1.

[0117] In the first step S1, at least two first heat exchanger tubes 5A and 5B are simultaneously wound onto the core tube 6 or the partially wound tube bundle 4', creating a gap 36 between the two first heat exchanger tubes 5A and 5B. If the first heat exchanger tubes 5A and 5B are wound over the entire length of the core tube 6 or the partially wound tube bundle 4', then the second step S2 is subsequently performed. In the second step S2, at least two second heat exchanger tubes 5C are simultaneously wound onto the core tube 6 or the partially wound tube bundle 4', such that one of each second heat exchanger tube 5C is arranged in the gap 36.

[0118] Specifically, prior to the first step S1, webs 8, 8A, and 8B can be connected to the core tube 6 or the partially wound tube bundle 4', on which the first heat exchanger tubes 5A and 5B are wound during the first step S1, and the second heat exchanger tube 5C is wound during the second step S2. As described above, webs 8, 8A, and 8B have grooves 24 in which the first heat exchanger tubes 5A and 5B are wound during the first step S1, and the second heat exchanger tube 5C is wound during the second step S2.

[0119] The first heat exchanger tubes 5A and 5B, together with the second heat exchanger tube 5C, form the tube layers 7, 7A, and 7B of the tube bundle 4 as described above. The tube bundle 4 is formed by multiple tube layers 7, 7A, and 7B, and adjacent tube layers 7, 7A, and 7B are wound at different winding angles α and β. Webs 8, 8A, and 8B are also arranged between adjacent tube layers 7, 7A, and 7B.

[0120] In the first step S1, the first heat exchanger tubes 5A and 5B are connected to the webs 8, 8A and 8B using the first fastening bracket 26. Subsequently, in the second step S2, the second heat exchanger tube 5C is connected to the first fastening bracket 26 using the second fastening bracket 39.

[0121] Before the first step S1, the heat exchanger tube 5, which serves as a conduit, can be wound onto the core tube 6 or the partially wound tube bundle 4', wherein, during the first step S1, one of the first heat exchanger tubes 5A and 5B is guided on the heat exchanger tube 5 serving as a conduit. As previously mentioned, the heat exchanger tube 5 serving as a conduit is wound manually. For this purpose, the grooves 24 of the webs 8, 8A, and 8B can be pre-marked, in which the heat exchanger tube 5 serving as a conduit is placed. Thus, the desired winding angles α and β can be easily obtained.

[0122] With the aid of the winding head 131, the first heat exchanger tubes 5A and 5B are wound onto the core tube 6 or the partially wound tube bundle 4' under preload during the first step S1 and the second heat exchanger tube 5C is wound onto the core tube 6 or the partially wound tube bundle 4' under preload during the second step S2.

[0123] The first heat exchanger tubes 5A and 5B are unfolded during the first step S1, and the second heat exchanger tube 5C is unfolded by the tube bundles 120, 121, 122, and 123 during the second step S2. The first heat exchanger tubes 5A and 5B and the second heat exchanger tube 5C are straightened to the core tube 6 or the partially wound tube bundle 4' before being simultaneously wound. For this purpose, a straightening unit 126 is used. During the first step S1 and / or the second step S2, the tube bundles 120, 121, 122, and 123 can be continuously braked. For this purpose, brakes 124 and 125 can be adjusted accordingly.

[0124] During steps S1 and S2, the angular velocity of the container rotating device 101 about the central axis 2 and / or the travel speed of the winding device 107, in particular the reel carriage 110, along the central axis 2 can be adjusted based on sensor data from the transverse four connectors 130, 130', and in particular the rotary encoder 142.

[0125] During the first step S1, the first heat exchanger tubes 5A and 5B can be placed. During the second step S2, the second heat exchanger tube 5C can be placed on the core tube 6 or the partially wound tube bundle 4' by means of the sorting unit 133.

[0126] Although the invention has been described with reference to embodiments, it can be modified in various ways.

[0127] The reference numerals used in the figures

[0128]

[0129]

[0130]

[0131]

[0132]

Claims

1. A method for using a tube bundle (4) in a wound heat exchanger (1), comprising the following steps performed in chronological order: a) Simultaneously winding (S1) at least two first heat exchanger tubes (5A, 5B) onto the core tube (6) or a partially wound tube bundle (4'), such that a gap (36) is formed between the two first heat exchanger tubes (5A, 5B), and b) At least two second heat exchanger tubes (5C) are simultaneously wound (S2) onto the core tube (6) or a partially wound tube bundle (4') such that one of the second heat exchanger tubes (5C) is located in the gap (36).

2. The method according to claim 1, wherein, Prior to step a), the web (8, 8A, 8B) is attached to the core tube (6) or the partially wound tube bundle (4'), during which the first heat exchanger tube (5A, 5B) is wound thereon, and during step b), the second heat exchanger tube (5C) is wound thereon.

3. The method according to claim 2, wherein, The web (8, 8A, 8B) has a groove (24) in which the first heat exchanger tube (5a, 5B) is wound during step a) and the second heat exchanger tube (5C) is wound during step b).

4. The method according to claim 2 or 3, wherein, The first heat exchanger tube (5A, 5B) and the second heat exchanger tube (5C) together form the tube layers (7, 7A, 7B) of the tube bundle (4), wherein the tube bundle (4) is formed by multiple tube layers (7, 7A, 7B), and wherein adjacent tube layers (7, 7A, 7B) are wound at different winding angles (α, β) from each other.

5. The method according to claim 4, wherein, The webs (8, 8A, 8B) are arranged between adjacent tube layers (7A, 7B).

6. The method according to any one of claims 2 to 5, wherein, During step a), the first heat exchanger tubes (5A, 5B) are connected to the web (8, 8A, 8B) via the first fastening bracket (26).

7. The method according to claim 6, wherein, During step b), the second heat exchanger tube (5C) is connected to the first fastening bracket (26) via the second fastening bracket (39).

8. The method according to any one of claims 1 to 7, wherein, Prior to step a), the heat exchanger tube (5) used as a conduit is wound onto the core tube (6) or a partially wound tube bundle (4'), and wherein, during step a), one of the first heat exchanger tubes (5A, 5B) is guided onto the heat exchanger tube (5) used as a conduit.

9. The method according to any one of claims 1 to 8, wherein, During step a), the first heat exchanger tubes (5A, 5B) and during step b), the second heat exchanger tube (5C) are wound onto the core tube (6) or the partially wound tube bundle (4') under preload.

10. The method according to any one of claims 1 to 9, wherein, During step a), the first heat exchanger tubes (5A, 5B) and during step b), the second heat exchanger tube (5C) are unwound from the tube bundles (120, 121, 122, 123), and wherein the first heat exchanger tubes (5A, 5B) and the second heat exchanger tubes (5C) are straightened onto the core tube (6) or the partially wound tube bundle (4') before being wound up simultaneously.

11. The method according to claim 10, wherein, During step a) and / or step b), the tubes (120, 121, 122, 123) are braked.

12. The method according to any one of claims 1 to 11, wherein, The method is carried out by means of a winding device (100) having a container rotating device (101), by means of which, during steps a) and b), the core tube (6) or the partially wound tube bundle (4') rotates about its central axis (2); And a winding device (107) by means of which, during step a), the first heat exchanger tubes (5A, 5B) and the second heat exchanger tubes (5C) are simultaneously wound onto the core tube (6) or the partially wound tube bundle (4') during step b), and wherein the winding device (107) has winding heads (131, 131') by means of which the first heat exchanger tubes (5A, 5B) are arranged spaced apart from each other during step a), such that gaps (36) are formed between two adjacent first heat exchanger tubes (5A, 5B), and the second heat exchanger tubes (5C) are respectively accommodated therein during step b).

13. The method according to claim 12, wherein, The winding device (107) includes a four-joint cantilever (127) having a transverse four-joint (130, 130') that carries the winding head (131, 131'), and wherein sensor data relating to the deflection of the transverse four-joint (130, 130') is output by the transverse four-joint (130, 130').

14. The method according to claim 13, wherein, During steps a) and b), the angular velocity of the container rotating device (101) about the central axis (2) and / or the travel speed of the winding device (107) along the central axis (2) are adjusted based on sensor data from the transverse four-joint (130, 130').

15. The method according to claim 13 or 14, wherein, The four-joint cantilever (127) includes sorting units (133, 133'), and wherein, during step a), the first heat exchanger tube (5A, 5B) and during step b), the second heat exchanger tube (5C) are placed on the core tube (6) or the partially wound tube bundle (4') by means of the sorting units (133, 133').

Images