DE2055655A1 - Process for the production of a heat exchanger from tubes wound around a core and device for its implementation - Google Patents

Description

Dr. Hans-Heinrich Willrath ¹ * Nov. 1970

T ^ T ^ - ^ λ »γ t D - 62 WIESBADEN

Dr. Dieter Weber _{Ρο3 {} & λ I ₃₂₇ ΐ / _βρ

PATENTANWÄLTE Custav-Freytag-Strasse 25

Telegram address: W1U.PATENT Telephone (O 61 21) 37 27 20

Postsdied :: Erankfurt / Main 6763
Bank: Dresdner Bank AG., Wiesbaden

Account No. 276 807 series 1709/1782

L «Air Liquide

Socie'te Anonyme pour l ^f Etude et l'Edploitation des Procedls Georges Claude, 75 »Quai d'Orsay, 75 Paris 7 ^Θ / France

Process for the production of a heat exchanger of tubes wound around a core and a device for its implementation

Addition to

(Patent application series 1709)

Priorities: November 13, 1969 in France, note no. J EN69 38976

on July 9, 1970 in France Note No.j E.N. 70 23899

The invention relates to improvements in the method and apparatus for manufacturing a heat exchanger sus wound tubes according to the main application and also has a method for winding on a core or Cylinder carrier on the subject "It relates in particular to the winding of profiles onto a core or cylinder carrier and also" in "Annex for carrying out the process

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rens as well as the product to be obtained ο

It is known that the winding of any profiles, such as wires, cables, U-profiles, hollow tubes USW ₁ on a core can be achieved commercially by the conjugation of translational and rotational movement. To achieve the desired rocking start, it is sufficient to control the speed of rotation according to the speed of translation or vice versa. A single control makes it possible to achieve a continuous sequence of steps, which leads to considerable expense, if one particularly wants to achieve a high level of accuracy. Indeed, at each moment it is necessary to apply the value of a step to a device designed for this purpose and, moreover, to act instantaneously on a set of mechanical, hydraulic, electrical or electronic steps which enable relative speeds of rotation and translation to be obtained generally allow a given ratio, whereby the effective speeds must inevitably take into account the considerable inertial forces of these devices, the inconsistent braking of the mechanisms resulting from the movement of the mechanisms, the irregularity of the loads corresponding to the work to be performed, etc. In order to take each of these factors into account, it is therefore necessary to have very perfect devices, which inevitably lead to a very high cost price, long delay in payment and disbursement

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leads to an operational uncertainty of the device. These shortcomings are even greater when the winding step to be performed does not remain constant over the length of the core.

The invention has set itself the task, these shortcomings to fix the known methods and devices and especially to create the possibility of an advantageous use in the case where better or smaller To be produced in series, by means of a simpler, more elastic and fabrication requirements and tolerances more adaptable solution that is particularly interesting in terms of profitability and the commercial production of wound heat exchangers sdr large dimensions in length and diameter as well as the Exceeding a result with the previously used methods and devices for the winding critical shape allowed.

The invention has a method for winding on a core or a support surface for the object in which the winding by conjugating a rotary motion with respect to the vertical axis of the core or support surface and a general translational movement in takes place through the same axis in a certain sense and the movements are carried out by means of reel equipment, which is given a relative movement with respect to a carrier that may be movable along the same longitudinal axis, uni where the translational movement and possibly the rotational

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movement can be regulated by grouping a gauge previously attached to the core or the support surface.

According to one embodiment of the method of the invention the rotational movement has a constant speed.

According to another embodiment of the method is the carrier is fixed and the general translational movement is that of the reel equipment or group opposite the carrier.

According to a further embodiment of the experience the carrier a translational movement in the same sense as the general translational movement, which is the resultant the movement of the carrier and the movement of the reel group.

According to yet another feature of the invention, the general translational motion is the resultant of opposing movements of the girder and the reel group, with the displacement speed of the girder is larger than that of the reel group.

According to one embodiment of the invention, the separation movement of the wearer a constantly controllable speed.

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According to another embodiment of the invention the carrier alternately fixed and movable, while the reel group s ± b in both directions between two End positions) an upper position and a lower one Position, relocated, by relocating or limiting the longitudinal movement of the carrier can be triggered.

According to a further embodiment of the invention, there is the copying device from a teaching elaborated on the core or the surface of the tube, which the theoretical Forms winding curve and its information to the Control device for the movement of the reel group transmits *

The invention also provides a device for Implementation of the method described above, which has a reel group in detail, whose Movement by copying a previously worked on the core or the support surface, which the theoretically · winding curve · forms, is controlled.

According to one embodiment of the device according to the invention The copying device for controlling the movements of the Haepel group consists of a button σ, the like, transmission means for the information to a motor and pick-up devices d ·· motors in function of this information.

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According to another embodiment of the invention there is the Haepel group in particular from a certain number of coils, coil carriers for receiving one coil each and vertical supports on which the coil carriers slide, while the supports with an annular Tread or ring track are connected, possibly opposite the vertical axis of the core or the carrier surface is rotatable.

According to yet another embodiment of the invention the vertical supports are rotatable with the annular Connected running ring, which in turn is fixedly attached to a carrier, which optionally along the vertical Axis is movable.

According to another embodiment, the vertical Supports on a part of the rotatable annular raceway and possibly rotatable on a part of a Mounted carrier, which is optionally movable along the vertical axis.

According to a further embodiment of the device according to According to the invention, the ring-shaped raceway or ring track has an inner circumference of a larger Durohmesser than the largest winding diameter.

According to yet another embodiment of the device According to the invention, the carrier consists of a vertical

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movable platform, which is at least partially made up of removable, sector-shaped grids of increasing diameter are formed is.

Various designs are shown below on the basis of the drawing Sformeη of the invention explained by way of example.

Fig.1 is a vertical half section through a simplified one Embodiment of a device according to Invention,

Fig. 2 shows the control device for the reel group,

Fig.3 is a section along line III-III of Fig.l and shows four reels "

A core or wing 1 is vertical in the device arranged, which is used to ¥ ¥ ¥ ickelung a profile in particular of tubes 2 around the core. The whole device is supported by a frame which has a certain number of vertical posts 3.

This apparatus has a carrier of a special kind. It consists in particular of a non-detachable part or platform 5 ^{a nd} removable sector-shaped grates 6 and has a zentrischea passage 7 for the core According to the development of the diameter of the core

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the diameter of the passage 7 must be increased. This is done by gradually removing that part of the detachable grids 6 lying on the boundary of the passage 7. The releasable grids rest on cross members (not shown) or radial arms which are firmly connected to the platform 5 of the carrier h and which in turn consist of easily dismantled adjacent components or other corresponding means, such as telescopic diaphragms, telescopic systems, etc. This device also has an annular raceway 8 concentric with the core. The inner circumference of this tread has a larger diameter than the largest winding diameter that you want to achieve. This running ring is rotatably supported by the frame.

A group of rotors 9 with reduction gears is used P to let the running ring 8, which is provided with wheels 11, run on the runway 10.

The translational movement of the carriers k can be effected by any hydraulic, electrical, mechanical or electronic means. Thus, the carrier k can be displaced by the hydraulic winches 12, which are connected to a Hotor 13 with a reduction gear. In this case, a stabilizing chain system (not shown) can contribute to the stabilization of the carrier k . Of course, the carrier k can also be used by others

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Means, such as, in particular, cables etc. that are wound up on a drum, are set in vertical motion.

A certain number of transverse girders Ik 'is attached to the running ring 8, to which rods 14 are firmly connected, on which bobbin carriers 15 slide with the bobbins 16. For the sake of simplicity, only one coil carrier is shown in Pig. In general, four coil carriers are used in accordance with Fig. 3, but a different number can of course also be provided. The coils 16, the coil carriers 15, the rods l4 and the cross members l4 ^f form the reel group according to the invention.

The spool supports 15 are slidable on the rods by means of Flanges 17 attached. A contactor, not shown, is preferably at least one of the inside Flanges 17 mounted on each bobbin. The contactor is by cams or projections 18, 19 on the Rod 14 actuated when flange 17 hits projection 18 or 19. Lever contactor 20, 2Of, the collars 21, 21 'are attached, act as a security to limit the correct run of the bobbin carriers and are possibly actuated by stops, not shown, which have the ·· »purpose for the case on the flange

17 are attached where the contactor, not shown, is not in the flange by the projection 18 or has been actuated.

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A group of motors with adjustable speed reducers 22 are provided on each spool carrier. It is used to move the coil carrier and thus the coil that is connected to it. The mode of operation of this group 22 is regulated by a copier device explained below. When the contactor (not shown) located in the flange 17 hits the level of the upper projection 18, the movement of the coil carrier 15 is ^{triggered in the} descending direction, while when this contactor hits the level of the lower projection 19, the movement of the coil carrier is triggered in the ascending direction. The contactor located in the flange 17, not shown, is connected to a group of motors 13 with variable reduction gears in such a way that when it hits the upper shoulder 18, the descending sliding movement of the carrier h is triggered, while b * ie impact * the lower one Projection 19 this sliding movement is interrupted. The descending movement of the coil carrier 15 can, if necessary, be regulated directly by the sliding movement of the carrier k «

The reel assembly according to the invention also has transverse supports 23 which keep the distance between the rods or sliding guides l4 at the top of these rods. The weight of the coils 15 is balanced by counterweights 2k.

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The device also has a copier consisting of a button 25 o, the like, a previously applied gauge 2 ', transmission devices 27-28-27' for information collected by the button to the motor group 22 of each coil carrier and trigger means 30 for this group . The latter may consist of a chain 26, which is connected to the coil carrier, actuated by the control rod 30 of the motor and balanced by the counterweight Zk, The button 25 is preferably connected to a carrier, which in turn is attached to the coil carrier by means of a slider which allowed the compensation of the deviations in the winding diameter. The device is adjustable in height

According to the example shown, the button is 25 e.g. slidably attached to the pipe coming from the reel, and the indicator 25 of the button is in contact with the previously applied gauge 2 !.

Fig.2 shows schematically the electrical part of the device. It has a potentiometer button 25, on the axis of which an indicator 25 is permanently attached. This button, which is attached to a "pad rigidly connected to the coil carrier" translates every change in level into a electrical voltage, proportional in value to this change. This voltage is applied to the input of an amplifier 28 applied with semiconductors that drive the DC motor

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which controls the coil carrier 15 at a speed proportional to the input voltage, i.e. the change in height, in such a way that it catches up with this change. $

This overall device also integrates the relative speed changes between the upward movement of the sheet form 5 and the simultaneous rotation of the fc coil carrier suspended from the running ring 15 * The upper ones and lower limit contactors 20 and 20 * are adjustable and may serve as a security to ensure correct operation the coil carrier 15 to limit * Bin manual control box 29 is mounted on each spool carrier.

A pre-bending device, not shown, for the tube is optionally arranged between the reels and the support surface. This facility has several tasks, viz a cleaning of the pipe coming from the coil, for example by means of a passage between two mushrooms, remediation of the tube before winding approximately to the radius of curvature of the core, flattening of the tube if necessary, guidance the unwinding of the pipe and the possibility of putting the pipe under tension to facilitate winding and to achieve a tight wrap.

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The operation of the lifting device according to the invention is the following:

The indicator 25 'of the button 25 is in contact with the gauge 2', which is previously applied to the core 1 and forms the theoretical winding curve. In the particular case shown in Fig. 1, this curve is a helix and it is a matter of applying a first layer around the Kergfr. The reel group rotatably connected to the running ring 8 experiences a rotational movement of practically constant speed _o Every change in height measured by the button 25 is transmitted to the Votor group with a variable reduction ratio 22, which controls the displacement of the coil carrier 15 on the supports Ik. The coil carrier 15 is displaced in a descending displacement movement.

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supply. , a contactor (not shown), which is mounted inside a flange 17 firmly connected to the coil carrier, extends the upper stop 18, the Botorgruppe 13 receives an impulse which triggers the displacement movement of the carrier h int ascending sense at a fixed, practically constant speed . At the same time, the displays transmitted from the button to the motor group 22 trigger the movement of the coil carrier 15 in the downward direction. As soon as the contactor (not shown), which is attached to the inside of one of the flanges 17, reaches the lower stop 19, the movement of the carrier is interrupted and the loading

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wegung de »Spulleninjäger« 15 i® on increasing> n sense? resumed..

Int general are: the on esLnwir · coil wound on erni tubes · * previously on nozzle? GewÄniStßlfcfce hanging- cut to length: wordfta », when the he« ** R ^ hr layer is wound on the core 1 m «303 # en, new bobbins are placed on the bobbin carrier 15» Bim-. Winding up of the second layer fc die For "fela-ffsong: der ^r precedingdain application: der

teaching, since the "ear" * "layer formed the teaching. In general, the carrier 4 has sunk again, and the alternating processes" weacsden vobe R&Ee "from" Kerns "resumed in an" adequate sense ". It is of course possible that the sliding movement of the carrier then takes place in an ascending sense. In this case, the relevant movements of the ¹ carrier: and: the HkepelgruppreF in the opposite sense, and the impact movements :, of the not shown 11 th contactor on the; Anscirlägmx. rufon movements in the general sense, as stated above.

According to the BaiiBtteaaerveicgiröerung of the winding, Ro »* · 6 AntfeErnt and ä ± m rods Ik of the coil 13 on the cross carrier 14. The speed of rotation of the reel group can be changed as a function of the ¥ iokeld ^ urchi »eer. The same applies to the sliding movement of the platform.

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It goes without saying that the invention is not limited to the illustrated and described embodiments, but that numerous deviations can be made depending on the intended uses. Thus, the support h can be omitted and replaced by a solid support, with the floor being able to play the role of the solid support. The tread can also be fixed and
be rigidly connected to the carrier and have a movable part which is not rigidly connected to the door to which the reel assembly is attached.

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Claims (12)

Claims 1.) J method for winding, in particular a tube bundle ν / according to a core or a support surface by conjugation to a rotation movement with respect to the ■ vertical axis of the core or the support surface and a generally translational movement in the specified sense in groups causes the same axis, the movements by a reeling ψ, of a relative movement with respect to a possibly movable Document is issued along the same longitudinal axis, characterized in that and
the translational movement, / if necessary the rotational movement can be controlled by copying from a gauge previously applied to the core or the carrier surface. 2.) Method according to claim 1, characterized in that the rotational movement has a constant speed. 3.) Method according to claim 1 or 2, characterized in that that the carrier is fixed and the general translational movement the reel group takes place opposite this carrier. 4.) The method according to claim 1 or 2, characterized in that the carrier has a translational movement in the same sense how the general translational movement experiences and the general translational movement the resultant of the movements of the carrier and the reel group. - 17 - 109821/1456 5.) The method according to claim k, characterized in that the general translational movement is the resultant of the movements of the carrier and the reel group in the opposite sense and the displacement speed of the carrier is greater than that ^ Ler reel group. 6.) The method according to claim k or 5 »characterized in that the translational movement of the carrier has a constant controllable speed. 7.) Method according to one of claims 4 to 6, characterized in that that the carrier is alternately fixed and movable and the reel group is in the broad sense between shifted two end positions, with the upper and the lower position the shift or the interruption of the Trigger relocation of the carrier, 8.) Method according to one of claims 1 to 7 »characterized in that that copiers of a teaching applied to the core or the carrier surface, which the theoretical curve forms your information Control devices for the movements of the reel group. 9.) Apparatus for carrying out the method according to claim dr · 1 bia 8, characterized durdiein Haepelgrupp · · whose movement by copying means of a previously on ά · η · core or Trägeroberfläoh applied doctrine - 18 - 109821/1456 which the theoretical winding curve remains, controlled will. 10.) Vorriohtungnach claim 10, characterized in that the copier for controlling the movements the reel group on a button or the like, transmission devices for its information to a motor and driving devices of the engine in function of this Information exists. 11.) Device according to claim 10, characterized in that the reel group consists of a certain number of coils, Spool supports for one spool each, vertical rods on which the spool supports slide and which have a rotating shaft Tread or a possibly rotatable relative to the vertical axis of the core or the support surface Ringbahn are connected, consists. 12.) Device according to claim 11, characterized in that the vertical rods are rotatably connected to the tread, which in turn is firmly and rigidly connected to a carrier which is optionally movable along the vertical axis. 13ο) Device according to claim 12, characterized in that the vertical rods are attached to a part of the rotating tread and possibly rotatable to a part of a carrier which, if necessary, moves along the vertical axis. 109821/1456 - 19 is movable. ' Ik.) Device according to one of claims 11 to 13, characterized in that the running ring or the ring track has an inner circumference of a larger diameter than the largest winding diameter lat. 15 ·) Device according to claim 12 or 13 »characterized in that that the carrier consists of a vertically movable Platform consists, at least in part, of removable, sector-shaped grids of increasing diameter is formed. 109821 / HS6 ΊΟ Blank page