WO2021213714A1 - Dispositif d'application au rouleau pour appliquer une couche de revêtement sur le côté interne d'un tube de grand diamètre - Google Patents

Dispositif d'application au rouleau pour appliquer une couche de revêtement sur le côté interne d'un tube de grand diamètre Download PDF

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Publication number
WO2021213714A1
WO2021213714A1 PCT/EP2021/055089 EP2021055089W WO2021213714A1 WO 2021213714 A1 WO2021213714 A1 WO 2021213714A1 EP 2021055089 W EP2021055089 W EP 2021055089W WO 2021213714 A1 WO2021213714 A1 WO 2021213714A1
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WO
WIPO (PCT)
Prior art keywords
rolling
piston
pressure
cylinder
rolling device
Prior art date
Application number
PCT/EP2021/055089
Other languages
German (de)
English (en)
Inventor
Peter Scobel
Original Assignee
EISENBAU KRäMER GMBH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EISENBAU KRäMER GMBH filed Critical EISENBAU KRäMER GMBH
Publication of WO2021213714A1 publication Critical patent/WO2021213714A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D49/00—Sheathing or stiffening objects

Definitions

  • Roll-on device for applying a layer on the inside of a large pipe
  • the invention relates to a rolling device for applying a support layer on the inside of a carrier layer of a large metal pipe by means of a pressure roller, which can be rotated and adjusted radially in the x-direction by means of a controlled or regulated force application unit having a piston / cylinder arrangement while exerting a pressure force a pressing section of a rotatable rolling head and is supported by means of a support unit present in this when rolling the support layer against the inside of the large pipe.
  • the roll-on device has a pressure roller mounted in a pressure section of a roll-on head, which can be rolled in the circumferential direction under the application of force by means of a piston / cylinder unit on the inside of an inner tube inserted in a carrier tube, around the inner tube wall to the inside of the carrier tube under plastic deformation to be pressed and thus to form a support layer (inliner, liner) which then non-positively lines the support tube on its inside.
  • the pressure roller is supported diametrically opposite it by means of an arrangement of support rollers on the inside of the large pipe.
  • the rotating drive of the rolling head takes place by means of a drive shaft coupled to it, with an axial advance being effected at the same time.
  • the support layer By rolling in and pressing (rolling on) the inner support layer continuously in the circumferential direction with plastic deformation and the simultaneous axial displacement of the pressure section or the pressure unit relative to the pipe unit consisting of the support tube and the inner tube, the support layer is applied evenly and permanently to the inner surface of the support layer in a force-fit and stable manner held without the outer tube having to be stretched.
  • the carrier layer which forms a thick-walled stable jacket, is thus practically not influenced in its structure, so that very different material partners can be combined in their metallurgical and / or geometric properties (thickness) for the production of the large pipe. A slight elongation of the carrier layer within its yield point is also possible, if desired.
  • the design of the original outer tube and the (at least one) original inner tube is largely freely selectable, only the inner diameter of the outer tube and the outer diameter of the adjacent inner tube should be adapted to one another in such a way that the inner tube can be easily inserted into the outer tube and through the Rolling process can be non-positively connected with stretching beyond the yield point or plasticization along the inner surface of the outer tube.
  • a practically smooth inner surface of the finished large pipe is achieved if the feed speed of the pressure unit during the unwinding of the pressure roller is matched to its rotational speed on the inner surface of the pipe unit in such a way that the plastically deformed, helically encircling strips overlap (e.g. simply or multiple times).
  • DE 102005029679 A1 also specifies a device for joining pipe profiles with an inner pipe profile in an outer pipe profile by expanding by means of a rolling element which is arranged in an expanding head and is supported by a rotating support shaft to apply the rolling forces.
  • the rolling element moves like a planetary gear around the axis of rotation of the support shaft, which in turn rotates eccentrically around the center axis of the tubular profiles.
  • the support shaft has a conical section and can in turn be displaced in the axial direction.
  • a support element, designed as a support roller, for example, is arranged on the expansion head, which supports the rolling forces occurring on the rolling element against the inner surface of the inner tubular profile.
  • the expansion head can be displaced along the pipe axis in order to produce joints at various points on the pipe profiles by expanding.
  • This known device is especially designed for joining tubular profiles with smaller diameters. Uniform, stable application of the support layer and precise control of the rolling process in the event of irregularities is relatively expensive.
  • JP S59 787 15 A Another device for connecting a multi-layer large pipe with a pipe unit comprising an outer pipe forming a support layer and at least one inner pipe forming a support layer is disclosed in JP S59 787 15 A.
  • the inner tube introduced into the outer tube is applied to the inner tube by means of a pressure roller that rotates around an axis of rotation that is spaced from the tube axis under contact pressure directed radially outward against the inner surface of the inner tube.
  • inner wall of the outer tube pressed on.
  • the pressure roller is then axially displaced and the groove is formed axially and continuously until the inner tube is tightly connected.
  • the pressure roller is held on a central axis guided through the tube and supported on this. In this case, it is difficult to achieve stable support and uniform pressing of the inner pipe on the inner surface of the outer pipe in order to form the support layer.
  • the present invention is based on the object of providing a rolling device for applying a coating on the inside of a carrier layer of a large pipe, by means of which the coating process can be controlled as precisely as possible and a coating that is as uniform and stable as possible is obtained.
  • the rolling device is designed in such a way that the piston / cylinder arrangement comprising at least one piston / cylinder unit is connected to a reservoir containing hydraulic fluid, in particular hydraulic fluid, via a line arrangement which has a flow line and a return line, the hydraulic fluid being connected by means of a control or regulating device can be fed to or removed from the piston / cylinder arrangement while maintaining a predetermined pressure force.
  • a control or regulating device can be fed to or removed from the piston / cylinder arrangement while maintaining a predetermined pressure force.
  • the at least one piston / cylinder unit is designed as a double-stroke piston / cylinder unit with two reciprocating pistons, one of which is coupled to the pressure roller via the pressing section of the rolling head and the other is coupled to the support unit, which advantageously has at least one support roller that acts directly on the inside of the large pipe when rolling against the pressure force of the pressure roller. This also results in a compact structure that is advantageous for production and operation.
  • a further advantageous embodiment for construction and operation is that a common flow line is connected on the input side between the two reciprocating pistons of the respective piston / cylinder unit and connections to a common return line are connected on the output side of the two reciprocating pistons of the respective piston / cylinder unit.
  • An advantageous embodiment variant consists in the fact that, if there are two piston / cylinder units, both are connected to a common feed line and a common return line.
  • Exact control or regulation of the pressing force with rapid response to changes in stroke due to irregularities or the like is achieved in that the piston / cylinder arrangement, in particular on the supply side, is fluid-conducting to a pressure compensation tank for varying the fluid volume in the piston / cylinder arrangement while the fluid pressure remains constant and thus constant predetermined pressure force is connected, with a fluid in the pressure equalization tank the space area is separated in a fluid-tight manner from a gas pressure space area under a predetermined pressure by means of a flexible partition.
  • the piston / cylinder arrangement is connected to the pressure compensation tank via the line arrangement, in particular the feed line.
  • the measures are also conducive to the fact that the pressure compensation container is attached to the rolling head so that it can rotate with it.
  • the rolling head is rotatably connected via a coupling section, in particular via a gear, to a drive shaft of a drive motor, which is connected to a motor housing that is non-rotatable with respect to the large pipe and is also non-rotatable with respect to the large pipe , in the z-direction extending feed rod is attached, via which the drive motor with the coupling section and the rolling head can be axially advanced in the large pipe.
  • a coupling section in particular via a gear
  • Advantageous measures for the construction are that the flow line and the return line are guided via a rotary feedthrough between the rolling head and the motor housing. In this way, parts of the line arrangement that are stationary with respect to the large pipe can be easily led to the outside to a reservoir or a pumping device.
  • the motor housing is advantageously provided with a circumferential support ring Plastic is provided, by means of which it can be axially displaceably supported in the interior of the large pipe under sliding friction. This ensures exact guidance of the rolling-on device in the vicinity of the rolling-on.
  • support rings with different outside diameters can simply be used.
  • the coupling section is provided with a sliding bearing or roller bearing, which is designed as a y-guide radially to the axis of the front push rod and at right angles to the x-direction and preferably as a Li near storage or roller circulation unit is designed.
  • a sliding bearing or roller bearing which is designed as a y-guide radially to the axis of the front push rod and at right angles to the x-direction and preferably as a Li near storage or roller circulation unit is designed.
  • a sliding or rolling, floating centering is also effected in the direction perpendicular thereto.
  • degrees of freedom are obtained in the three mutually perpendicular spatial directions.
  • An advantageous structure of the pressure roller which is circular in an axial plan view, consists in that the pressure roller has a radially symmetrical shape in an axial plan view and, on its outer circumferential surface with a circular cross-section in an axially extending central longitudinal plane, has a flat, axially parallel rolling section, which in longitudinal section - preferably on both sides - over the entire Circumferential surface rounded at a small angle less than 20 ° with respect to the direction of the axis of rotation or sloping down to a smaller radius and on both sides - preferably rounded - merges into side areas steeply sloping at a side angle between 70 ° and 90 °, which terminate in axially extending axial sections on both sides.
  • the rolling head has a rolling housing with a housing base that includes the support unit, and with a housing attachment that includes the pressing section, and that the housing base and the housing attachment with mutually complementary, Sections of a sliding guide designed as an x-guide or, advantageously, designed as a linear bearing or a circulating roller unit, which are supported in one another in a sliding or rolling manner, are provided.
  • a sliding guide designed as an x-guide or, advantageously, designed as a linear bearing or a circulating roller unit, which are supported in one another in a sliding or rolling manner
  • Another advantageous embodiment which is particularly advantageous for large pipes with a smaller diameter (e.g. smaller than 20 cm or 18 cm inner diameter) for the stable design of the rolling head, consists in the piston / cylinder arrangement having two axially spaced apart, each comprises piston / cylinder units acting radially in the x direction and that the pressure roller and optionally at least one support roller of the support unit is / are arranged between the two piston / cylinder units.
  • the support unit has at least one support roller that acts directly on the inside of the large pipe when rolling against the pressing force of the pressure roller.
  • FIG. 1A shows a schematic view of a rolling device when used in a large pipe in an axial plan view (x-y plane),
  • 1B shows a schematic view of a rolling device when used in a large pipe in the longitudinal direction (x-z plane),
  • FIG. 2A and 2B are a perspective side view of a portion of the roll-on device with drive motor and roll-on head coupled to it (FIG. 2A) and the roll-on head in an enlarged view A (FIG. 2B), FIG. 3 essential components of a hydraulic system of the roll-on device of FIG. 2A,
  • FIG. 4A and 4B show a side, partially sectioned view of the hydraulic system according to FIG. 3 (FIG. 4A) and a cross section of a piston / cylinder unit with connection lines running along a sectional plane A-A,
  • FIG. 5 shows a pressure roller with bearing elements in a perspective side view
  • FIG. 6 shows a support roller in an axial plan view (left illustration) and in a side view (right illustration. 1A and 1B show in an axial plan view (Fig. 1A) and in an open side view (Fig. 1B) in a large pipe to be formed with an inner coating, a coating device with a rolling tool 2, which has a rolling head 20 and one coupled to it Has drive unit 3. The drive unit is in turn coupled to a feed rod 40 of a feed unit 4 (not shown in full).
  • the large pipe is formed from a pipe unit 1 which comprises a metallic outer pipe 10 as a carrier layer and a metallic inner pipe 11 introduced into its interior to form a support layer (inliner, liner).
  • the inner tube 11 is relatively thin-walled in comparison to the outer tube 10, in order to form the support layer on the inside of the carrier layer in a force-locking manner by means of a rolling-in process and in this way to obtain a large tube with a stable inner coating.
  • the term large pipe should be understood to mean pipes with diameters of at least 150 mm and a total wall thickness of at least 5 mm, the thickness of the carrier layer being a multiple of the thickness of the support layer.
  • the material properties of the support layer are selected in such a way that they withstand mechanical, physical and / or chemical effects of an item to be conveyed as robustly and permanently as possible. To this end, it is of considerable advantage if the choice of material is restricted as little as possible by the manufacturing process, which is achieved by the rolling or rolling process for forming the overlay layer.
  • a pressure roller 21, which has a smaller diameter than the diameter of the inner tube 11, is pressed with a sufficiently large pressing force radially in the x direction against the inner surface of the inner tube 11 during the rolling-in process and thereby by means of a the support unit 220, which counteracts the pressure force diametrically, is supported with at least one support roller 22 directly on the inside of the inner tube 11.
  • the pressure roller 21 is in a nem pressure section 214 of the rolling head 20 rotatably mounted and rolls during the rolling process while rotating the rolling head 20 on the inside of the inner tube 11 in the direction of rotation, the rolling head 20 being driven in rotation by means of a drive motor 30 of the drive unit 3 and at the same time by means of the feed unit 4 in the axial direction ( z-direction) of the large pipe or in the direction of the axis of rotation of the rolling tool 2 is advanced.
  • the basic procedure for this rolling-in process is set out in WO 2016/142162 A1.
  • the feed speed is matched to the speed of rotation when the pressure roller 21 rolls on the inside of the inner tube 11 and is selected so that the strip of at least the next plastically deformed strip, which is plastically deformed during one revolution by means of the pressure roller 20 and revolves in a helical shape with a slight slope, is also helically shaped circumferential strip is overlapped and so on until the support layer is rolled over the desired length in the outer tube 10.
  • the pressure roller 21 is rotatably mounted in the pressure section 214 by means of a pressure roller axle 211, and the at least one support roller 22 is rotatably mounted in a support bearing part of the rolling head 20 by means of a support roller axle 222.
  • a force application unit which is designed as a piston / cylinder arrangement (described in more detail below), is arranged between the pressing section 214 and the support unit 220.
  • the rolling head 20 has a rolling housing 200 with a housing base 201 in which the support unit 220 is formed, and a housing attachment 202 in which the pressing section 214 is formed.
  • the rolling head 20 is connected to the drive unit 3 via a coupling section 27 which is non-rotatably attached to the rolling housing 200, in particular to the housing base 201, a drive shaft of the drive motor 30 preferably via a gear 31 (cf. Fig. 2A). with the coupling section 27 is bound.
  • a motor housing 32 of the drive unit 3 is attached to the feed rod 40 so that it rotates relative to the large pipe.
  • the motor housing 32 is surrounded by a smoothly sliding support ring 33, preferably made of plastic, the outer diameter of which is adapted to the inner diameter of the inner pipe 11 so that axial advancement with simple sliding movement is ensured.
  • the rolling head 20 is provided with an x-guide 260 which is arranged between the housing base 201 and the housing attachment 202.
  • the x-guide 260 is advantageously arranged in wall sections of the housing base 201 and the housing attachment 202 that run parallel to each other and at right angles to the axis of rotation (z-direction), preferably on the inside of a front wall section of the housing base (on the side facing away from the drive unit 3) 201 on the one hand and on the inside of a rear wall section of the housing base 201 (on the side facing the drive unit 3) on the other hand.
  • the x-guide 260 has, on the one hand, on the housing base 201 and, on the other hand, on an adjacent wall region of the housing attachment 202, complementary guide parts that are slidably mounted one inside the other.
  • a y-guide 261 is also arranged radially, but perpendicular to the x-guide, on the one hand on the facing side of the housing base 201 or on an intermediate piece attached to it and on the other hand, on the facing side of the coupling section 27, it has complementary sliding sections that are slidably supported one inside the other.
  • the floating mounting of the rolling head 20 in the xy plane that is formed in this way results in a radial self-adjustment of the rolling head 20 in the tube unit 1 that is reliably effective during the rolling-in process and thus contributes significantly to the exertion of a uniform pressing force of the pressure roller 21 during the entire rotation and over the entire feed path at, even if the inner circumference of the large pipe has irregularities, which is usually the case.
  • the uniform pressing force in turn results in a stable application of the support layer on the inside of the outer tube 10 over the entire rolling area.
  • FIG. 1B further shows, on the (front) end face of the rolling head 20 facing away from the drive unit 3, a pressure compensation container 24 is attached, in particular connected to it in a rotationally fixed manner.
  • the pressure equalization container 24 serves to equalize the pressure of the rolling pressure prevailing in the piston / cylinder arrangement 23 and thus to maintain a predetermined pressing force of the pressure roller 21, as will be described in more detail below.
  • FIG. 2A and 2B show more details of the rolling tool 2 with the rolling head 20 and the drive unit 3, with FIG. 2B showing the rolling head 20 shown in FIG. 2A in an enlarged view, partially sectioned in the area of a piston / cylinder unit 230 of the piston - / cylinder arrangement 23 (see. Also Fig. 3, 4A and 4B) reproduces. 2A and 2B also show sections of a line arrangement 25 with line sections guided along the rolling tool 2 and connected to the piston / cylinder arrangement 23 for supplying hydraulic fluid, in particular hydraulic fluid or hydraulic oil.
  • the pressure compensation container 24, its mechanical attachment to the rolling head 20 and connection means for connecting the pressure compensation container 24 to the line arrangement 25 are also shown.
  • the bearing of the pressure roller 21 in the area of its pivot bearing 210 in the housing attachment 202, which is supported by a bearing section in FIG a housing cover part 203 is supplemented, which is stably mounted on the housing attachment 202.
  • the pressure roller 21 protrudes through a slot-like cutout from the housing attachment 202, in particular the housing cover part 203, radially outward with a rolling surface and has in the pivot bearing 210 stably mounted, on both sides in the direction of the axis of rotation (z-direction) protruding sections of a, preferably molded, pressure roller axle 211 on.
  • the x-guide 260 has guides with linear bearings or circulating roller units or, alternatively, can e.g. B. on the one hand sliding grooves and on the other hand complementary in this engaging slide rails, z. B. have a dovetail cross-section.
  • the y-guide in the present case also has guides with linear bearings or recirculating roller units or, alternatively, can e.g. B. on the one hand slide grooves and on the other hand complementary in these engaging slide rails, the x-guide and the y-guide, for example, each comprise two parallel units of slide rail and slide groove or rolling elements, which results in a high stability of the guide under floating mounting results, wherein the deflection is limited so that required deflection areas are included.
  • the motor housing 32 surrounds with its the rolling head 20 facing front portion of the drive unit 3 facing rear portion of the Koppelab section 27, which is rotatably mounted in the front portion of the motor housing 32.
  • the rolling head 20 can thus be rotated about a stable axis of rotation in the tube unit 1 via a drive shaft driven in rotation by the drive motor 30, in particular via the gear 31, the pressure roller 21 with the required pressure force on the inside of the inner tube 11 with plastic deformation of the same for Forming the overlay layer unrolls.
  • the feed rod 40 is rigidly attached to the end section of the motor housing 32 facing away from the rolling head 20, in particular to the front end thereof, and with its end facing away from the drive unit 3, preferably outside the large pipe, with a (not shown) feed device connected.
  • the large pipe can also be moved axially relative to the rolling tool 2 in order to generate the feed.
  • the sections of the line arrangement 25 connected to the rotatable rolling head 20 and the coupling section 27 and connected to the piston / cylinder arrangement 23 are via a rotary leadthrough 253 with non-rotating sections of the Line arrangement 25 connected in a fluid-conducting manner.
  • a rotary leadthrough 253 with non-rotating sections of the Line arrangement 25 connected in a fluid-conducting manner.
  • associated circumferential channel sections are brought into connections that communicate with one another and are sealed to the outside, even during the rotation, so that a trouble-free passage of the hydraulic fluid from a connected feed pump or pump. a reservoir providing the hydraulic fluid to the piston / cylinder arrangement 23 and optionally back from the piston / cylinder arrangement 23 is guaranteed.
  • the piston / cylinder arrangement 23 in the present case has two piston / cylinder units 230, 231 which are axially in the direction of the axis of rotation (z-direction) are spaced apart and between which the pressure roller 21 and the (at least one) support roller 22 are arranged, wherein z. B. two support rollers 22 can be offset in the circumferential direction at the same angle with respect to a diagonal running centrally through the pressure roller 21 in the same cross-sectional plane.
  • the at least one support roller 22 is supported with its support roller axis 222 in the support bearing part 221 and protrudes through a corresponding gap from the roll-on housing 200 or the housing base 201 to such an extent that it rolls unhindered on the inner surface of the inner tube 11 during the rolling-on process.
  • the support roller 22 is advantageous for. B. mounted on the support roller axle 222 via at least one support roller bearing 223 (see. Fig. 6).
  • each piston / cylinder unit 230, 231 is designed as a double-stroke piston / cylinder unit, for example each with a round block cylinder.
  • the hydraulic fluid is fed into a flow-side hydraulic chamber via a common flow line 250 and hydraulic fluid displaced from a return-side cylinder chamber is returned to a common return line 251 via line sections connected to it, as can be seen in more detail in FIGS. 3, 4A and 4B.
  • This design with the double-stroke piston / cylinder units results in a compact, stable design of the rolling head 20 with a reliable, easily controllable or regulatable function, in particular easily controllable or controllable pressing force over the entire rolling area even with irregularities in the large pipe.
  • a version with just one double-stroke piston / cylinder unit is also possible.
  • the pressure equalization tank 24 is connected to the line arrangement 25, in this case the supply line 250, via an associated line section, so that the supply-side cylinder space of the piston / cylinder arrangement 23 with a hydraulic fluid receiving area 241 of the Pressure compensation tank 24 is communicatingly connected.
  • the hydraulic fluid receiving space 241 is separated by means of a fluid-tight membrane from a gas pressure space area 240 formed in the pressure equalization container 24, which is kept under a predetermined gas pressure (preferably nitrogen).
  • volume compensation is always ensured with the pressure of the hydraulic fluid remaining the same, and thus also a constant pressure of the pressure roller 21 or a constant pressure force acting on the inside of the inner tube 11 during the rolling process, regardless of out-of-roundness or similar influences.
  • the line arrangement 25 can be provided with a cooling air line 252 in addition to the hydraulic fluid line in order to effect cooling of the rolling tool 2 or the relevant area of the large pipe during the rolling process.
  • the cooling air line 252 also has a rotary leadthrough between the rotating section of the rolling tool 2 and the stationary section of the rolling tool 2, in particular in the area between the drive shaft and the motor housing 32 or between relevant adjacent rotating and stationary parts in the transition area between the drive unit 3 and the coupling section 27, as stated above in connection with the supply and discharge of the hydraulic fluid.
  • FIG. 5 shows an advantageous embodiment of the pressure roller 21 with two laterally protruding sections of a pressure roller axis 211 and angular contact bearings on both sides with a self-centering arrangement.
  • the rolling bodies on both sides have bearing halves that are directed towards one another at an angle with an increasing circumference with respect to a central longitudinal plane.
  • the angular contact bearings are inserted into correspondingly adapted bearing surfaces formed in the housing attachment 202 and the housing cover part 203 and result in a secure, stable position when rolling on with an axial advance.
  • the rolling surface of the pressure roller 21 is designed in a special way so that it is parallel in a central, radially furthest protruding circumferential area with respect to the axis of rotation over a width of z. B.
  • 2 to 6 mm runs (flat 212) and then on both sides at a small angle of less than 20 ° or less than 10 ° obliquely (bevel 213) or rounded outwards over a range of z. B. 1 to 3 cm and then laterally (passing over curves) into steep flanks (side areas) at an angle between 50 ° and 90 ° with respect to the axial direction and then merges into the lateral axis sections.
  • the pressure roller 21 radially symmetrical in an axial plan view and, for example, also configured symmetrically with respect to the axial extent with respect to a central transverse plane.
  • the bevel 213 or rounding that adjoins the flattened area 212 is adapted in such a way that, during the advance, there is a safe run-in from the already pressed (plastically deformed) area of the inner tube 11 or the support layer into the area of the inner tube 11 that is to be pressed or completely pressed .
  • the difference in height (radial distance) between the flat 212 and the transition between the bevel 213 in the subsequent steep lateral flank is preferably somewhat greater than the molding depth during the rolling process.
  • the pressure roller 21 formed in this way and mounted in the housing attachment 202 of the rolling head 20 contributes significantly to an exactly controllable or regulatable rolling process under pressure force adapted to the material of the inner tube 11 and the geometry of the large tube and under control or regulation of the feed and rotary movement.
  • the support roller 22 6 shows an advantageous embodiment of the support roller 22 6 shows, clearly (for example, at least twice) larger than the rolling surface or contact surface of the pressure roller 21, so that stable support on the inner surface of the inner tube 11 is ensured during the rolling-in process.
  • the support surface 24 has a flat shape in its axial extension and runs parallel to the axis of rotation of the support roller 22 or the rolling head or has a rounding with a very large radius in the axial direction, so that the significantly larger axially extended support surface 224 results compared to the rolling surface .
  • the support surface 224 tapers in an edge area that comprises about a third or a quarter or less of the entire axial extent of the support roller 22, continuously over a bevel 225 (conical section-shaped or conical) or over a slight curve in order to get into the (first) side surface of the support roller 22 on the feed side (preferably with a small radius of curvature), whereby the feed rate when the inner tube 11 rolls on becomes cheap ⁇ .
  • the (second) side surface of the support roller 22 facing away from the feed side merges directly via a rounding (with a small radius of curvature) into the second side surface remote from the feed side surface.
  • Both side surfaces of the support roller 22 are, for example, flat and oriented orthogonally to the axis of rotation of the support roller 22.
  • the support roller 22 is provided with two support roller bearings 222 (support roller roller bearings or support roller ball bearings) arranged axially next to one another.

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  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un dispositif d'application au rouleau pour appliquer une couche de revêtement (11) sur le côté interne d'une couche de support (10) d'un tube métallique de grand diamètre au moyen d'un rouleau de pression (21), qui est monté, de manière rotative et au moyen d'une unité d'application de force à commande en boucle ouverte ou boucle fermée comportant un ensemble piston/cylindre (23), dans une section de pression (214) d'une tête d'application (20) de rouleau rotatif de telle sorte qu'il puisse être ajusté en exerçant une force de pression radialement dans la direction X, et qui est supporté au moyen d'une unité de support (220) située en son sein lors du laminage de la couche de revêtement (11) contre le côté interne du tube de grand diamètre. L'ensemble piston/cylindre (23) comprenant au moins une unité piston/cylindre (230, 231) est relié à un réservoir contenant un fluide hydraulique, en particulier un liquide hydraulique, par l'intermédiaire d'un ensemble de conduites (25) comportant une conduite d'alimentation (250) et une conduite de retour (251) ; en obtenant une force de pression prédéfinie de l'ensemble piston/cylindre (23), le fluide hydraulique peut être introduit dans celui-ci ou évacué de celui-ci au moyen d'une unité à commande en boucle ouverte ou boucle fermée.
PCT/EP2021/055089 2020-04-22 2021-03-02 Dispositif d'application au rouleau pour appliquer une couche de revêtement sur le côté interne d'un tube de grand diamètre WO2021213714A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020110931.8A DE102020110931A1 (de) 2020-04-22 2020-04-22 Anrollvorrichtung zum Aufbringen einer Auflageschicht auf der Innenseite eines Großrohrs
DE102020110931.8 2020-04-22

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WO2021213714A1 true WO2021213714A1 (fr) 2021-10-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978715A (ja) 1982-10-29 1984-05-07 Toshio Yoshida 二重管製造方法
WO2005024171A2 (fr) * 2003-09-05 2005-03-17 Enventure Global Technology, Llc Element tubulaire expansible
DE102005029679A1 (de) 2005-06-23 2006-12-28 Universität Dortmund Vorrichtung zum Fügen von Rohrprofilen durch Weiten mit einem rotierenden Werkzeug oder rotierendem Werkstück mit einer Walzrolle und Führungselementen
WO2016142162A1 (fr) 2015-03-06 2016-09-15 EISENBAU KRäMER GMBH Procédé et dispositif de revêtement pour appliquer une couche de recouvrement lors de la fabrication d'un tube de grand diamètre multicouche
CN110976671A (zh) * 2019-12-12 2020-04-10 太原理工大学 一种铝包镁复合管件固体颗粒介质成形方法及装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978715A (ja) 1982-10-29 1984-05-07 Toshio Yoshida 二重管製造方法
WO2005024171A2 (fr) * 2003-09-05 2005-03-17 Enventure Global Technology, Llc Element tubulaire expansible
DE102005029679A1 (de) 2005-06-23 2006-12-28 Universität Dortmund Vorrichtung zum Fügen von Rohrprofilen durch Weiten mit einem rotierenden Werkzeug oder rotierendem Werkstück mit einer Walzrolle und Führungselementen
WO2016142162A1 (fr) 2015-03-06 2016-09-15 EISENBAU KRäMER GMBH Procédé et dispositif de revêtement pour appliquer une couche de recouvrement lors de la fabrication d'un tube de grand diamètre multicouche
CN110976671A (zh) * 2019-12-12 2020-04-10 太原理工大学 一种铝包镁复合管件固体颗粒介质成形方法及装置

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