DE2232233C2 - Insulated container and a method and an apparatus for its insulation - Google Patents

Description

The invention relates to an insulated container according to the preamble of claim 1 and a Move »and a device to isolate it.

The insulation of containers, in particular of curved containers for the transport of liquid gas, is problematic due to the large temperature differences. In particular, the tightness of the Insulation is a high requirement, otherwise the air humidity will freeze out on the outer surface of the container or the insulation is destroyed within the insulation.

From US-PS 33 79 330 an insulating jacket for a cylindrical body is known, which consists of individual rectangular panels, which are applied to the outer surface of the cylindrical body that they overlap like roof tiles. Each panel consists of two flexible covers forming an outer skin, which is a laminate of reflector foils and separators arranged between the reflector foils lock in. The laminate further comprises a foam sheet which is used to absorb the carbon dioxide snow is used when the panel filled with carbon dioxide is cooled to very low temperatures. By freezing out the carbon dioxide in the panel this is practically evacuated, so that the gas as No heat transfer medium.

The disadvantage of this solution is that the panels are very expensive and sensitive to manufacture. Furthermore, the attachment of the panels to the outer surface of the container to be insulated is very important labor intensive. The prefabricated panels can only be curved in one direction so that they are not suitable for cladding a container with a double-curved outer surface.

From US-PS 33 92 220 a generic insulated container is known, wherein on the outer surface of the cylindrical container certain cylindrical rollers with a covering stretched over them Width. This is done between the jacket and the outer surface of the container formed interstices foamed in sections with a plastic. Is an isolation section finished, then rollers are again arranged on the outer ropes of the container and provided with a sheathing and the gaps formed as a result are again covered. This process is repeated until the entire The outer surface of the cylindrical iron container is insulated. Finally, the sheathing is attached to the vertical Riveted joints.

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^e0 This method is also very labor-intensive and, from an economic point of view, only justifiable for a container that is curved on one side. In the case of a container curved on both sides, the rollers would each have to have a certain curvature, which makes the method very labor-intensive and expensive.

It is therefore an object of the present invention to provide a thermal insulation for a container that has simple and effective way on containers with a single or double curved outer surface minimal space requirement can be applied without having to handle prefabricated insulating material parts have to.

This object is achieved by the invention characterized in claims 1, 8 and 15, wherein Claim 8 a method for producing the insulation and claim 15 a device for carrying it out of the procedure.

Advantageous further refinements of the invention emerge from the subclaims.

Embodiments of the invention are shown in the drawing and will be described in more detail below described. It shows

F i g. 1 the insulation of a spherical container,

F i g. 2 and 3 parts of a spiral winding head for applying foam, as is the case with the device according to FIG. 1 can be used;

4 shows a view of a support device or guide device for partially positioning the spiral winding head for applying foam according to FIGS. 1, 2 and 3;

Fig. 5, 6 and 7 views of foam welding ends or -connecting assemblies, which with the spiral winding head for applying foam according to the F i g. 2 and 3 can be used;

F i g. 8 is a view of a foam welding or joining device as it is used; if a preformed foam strip is used in the manufacture of the insulation according to the invention will;

9, 10 and 11 are views of a reinforcement application device, which is adapted to work in combination with the device according to Fh: 8 to a manufacture reinforced preformed foam strips;

12 and 13 are views of the fastening and positioning of the welding and reinforcing device according to FIGS. 8 to 11;

14 shows a section of the construction according to FIG. 1 in connection with a device for Application of a vapor protection cover;

15 and 16 show the function of the device for applying the vapor protection cover;

Figure 15A is a view of part of the device 15 in section along line 15.4-15.4 in Fig. 15;

15B, 15C and 15D are sections through the vapor protection cover in different stages of their production;

17 and 18 show two views of an alternative embodiment of the spiral winding head for application of foam produced with the device according to FIG. 1 can be used;

Figures 17A and 17B illustrate the various ways of attaching reinforcing material;

19 shows a section through an embodiment of a connection between adjacent turns, when using preformed foam insulation; 20 shows a partial illustration in section

an applied insulation, in the case of the preformed Foam is used;

21 shows a partial section through an applied insulation in which material is used that is foamed on its platform; ί

F i g. 22, 23 and 24 cross-sectional representations of alternative Connection between adjacent applied strips;

F i g. 25 a connection between insulation, which is adjacent to the container according to FIG. I made ^{| (l} was made and insulation was made or preformed away from this container;

F i g. 26 and 27 alternative embodiments of FIGS Insulating layers or layers.

! n F i g. 1 is a schematic representation of a container assembly and ι "; a device for applying insulation is shown and generally designated 40. The assembly 40 comprises a substantially spherical container 41 which encloses an inner space, not shown, which is intended to receive cold materials. The container 41 has an upper part 42 and a bottom part 43. The container 41 has an essentially spherical outer, double or three-dimensionally curved outer container surface 44. Approximately in the area between the upper part 42 and the bottom part 43 there is a circumference or a substantially equatorial flange 45 extending around the container 41. A support 46 of substantially cylindrical shape is disposed around the container 41. The support 46 has an upper end 48 and a lower end Ends 49 which are disposed around the container 41. The upper end 48 of the cylindrical support 46 stands generally n operative engagement with the flange 45. The lower end 49 of the support 46 is mounted on a ^{i =>} bottom 51 of a ship or another supporting means. The container 41 has, adjacent to its upper end, a protective housing 53 which is provided to accommodate liquid lines, valves and the like (not shown). A first isolation device 55 is arranged substantially adjacent to the upper part 42 of the container 41. The insulating device 55 comprises, in cooperative combination, a guide unit 57 in the form of a rail, which is held in a fixed position relative to the container 41 by means of a number of supports 59 arranged substantially around the circumference. The supports 59 are attached to the floor 51. A generally arcuate scroll head support 61 extends from a location substantially adjacent the top 42 of the container 4t to a location between the flange 45 and the bottom 43 of the container 41. The arcuate scroll head support has an upper end portion 62 and a lower end portion 63. A drive 65 for the support frame is attached to the spiral winding head carrier 61 in a position which is substantially adjacent to the guide device 57. The drive 65 has a motor 66 which is operationally connected to a wheel or gear 67 which is in driving contact with the guide device 57. A bearing 69 is provided adjacent the upper end portion 62 of the scroll head support and in operative combination therewith. The bearing 69 comprises a pin or a pivot shaft 71 which is fastened to the protective housing 53 and lies on a generating axis of the ball and essentially at the same distance from every location of the annular guide device 57. The pivot shaft 71 passes through the bearing 69 and has a rotary connection assembly 73 which is arranged at a distance from the protective housing 53. This rotary joint assembly 73 includes rotary joints for a power source to supply electrical, hydraulic and / or pneumatic power. The bearing 69 has a circumferential platform 74 and an annular filling bearing 75 which engages a flange 76 of the protective housing 53 in order to prevent axial wobbling movements of the bearing 69. A source of insulating material 78 is movably arranged on the peripheral platform 74. A source of material 79 is disposed adjacent to bearing 69; a foam strip 8! extends from the source of insulation material 78 to a location adjacent the spiral winding head support 61 which supports a spiral winding head 82 for applying the insulation adapted to receive a foam strip 81 and apply it as a continuous strip to an adjacent strip. The spiral winding head 82 for applying the foam layer 83 comprises a laying head 84 for applying a vapor protection cover, the laying head 84 moving at a fixed distance from the spiral winding head 82. A second or lower insulating device 86 is arranged adjacent to the bottom part 43 of the container 41. The insulating device 86 comprises an arcuate spiral winding head carrier 87 with a first end 88 and a second end 89, a drive 91 being attached in the region of the second end 89 of the spiral winding head carrier 87 and a bearing 92 being pivotably articulated in a position which is essentially coaxial with the pivot shaft 71 is. A spiral winding head 93 for the application of foam is movably arranged on the spiral winding head carrier 87. A lower circumferential guide device or rail 95 is arranged inside the cylindrical support 46 and is drivingly connected to a wheel 96 which is carried and driven by the drive 91. The bearing 92 has a second foam source 98 adjustably fastened to it. A material feed device 99 creates a feed of material through the cylindrical support 46.

When operating the in Fi g. 1 is generally the top of the container and part of the cylindrical support isolated by the spiral winding head 82 for applying foam first adjacent to the lower end portion 63 of the Spiralwindekopfirägcrs 61 is positioned. The isolation, such as B. Plastic foam from the foam source is fed to the spiral winding head, and a continuous one A strip of foam is deposited around the perimeter of the support 46. The first strip of insulation can be held in place by any suitable means become, such as B. by adhesives, arranged on the support of the container support arms and the like. As soon as the first turn of the foam has been applied, the following turns or turns Sanding foam applied and connected to the previously applied coil. During the Spiral winding head carrier 61 rotates around container 41 and applies successive foam strips, the spiral winder head 82 is moved from the lower end portion 63 of the spiral winder head carrier 61 to up against the upper end portion 62 of the same

moves and thus applies the desired insulating material in a uniform manner and at a desired speed. The apparatus and method require little supervision other than providing a supply of material for the insulation foam strip. The lower insulation applicator operates in a substantially similar manner, with an insulation strip being applied to the container 41 at a location substantially adjacent the second end 89 of the spiral winding head support 87 Ki from the spiral winding head 93 and down from the equatorial flange of the container is wrapped away to cover substantially a majority of the lower surface. An in the wcSciVuiCHcn cylindrical iSöhcfcierficfii ίΟί is arranged ün or.] ' Inner surface of the cylindrical support 46, and the gap between the insulating element 101 and the spirally applied insulation is filled with insulating material 102, which is in the form of preformed plates, such as. B. plastic foam sheets, or in the form of foamed in place plastic foam, which is formed from foamable, curable materials, is provided. Here, a lower equatorial region 104 of the container 41 does not receive any direct application of insulating material. However, the heat input to the container 41 must overcome a substantial distance on its way through the support member 46, the outer foam layer 83 and the inner insulation 101.

2 and 3 show a front view and a plan view of a spiral winding head, the Welding assembly is removed. The device according to FIGS. 2 and 3 are generally designated by the reference numeral 110 and is particularly suitable for applying preformed insulation strips made of foamed thermoplastic plastic or strips that have thermoplastic surfaces, which can be connected to one another by heat. The device 110 is in communication with an outer surface of the container 111 shown. The device 110 comprises a support device cooperating therewith 112 having a substantially L-shaped shape. At the support facility 112 is one of this support 113 extending away is arranged. The support 113 is in operative engagement with a support arm 114, which in turn from a carriage to an arcuate support, such as B. on one of the spiral winding head carrier 61 and 87 of Fig. 1 is supported. The support 113 is pivotable on the support arm 114 angelenki. At the support 113 is pivotally at a location between the support arm 114 and the support device 112 Lateral adjustment device or a liquid-actuated piston and cylinder device 116 can be pivoted hinged, which extends between the arm or support 113 and the carriage that is on the arched support frame runs. The liquid-operated piston and cyan device provides the Support 113 in its angular position to the support arm 114 and thus the support device 112 relative to the container outer surface 111 a. The support device 112 carries a motor 118 which is in driving connection with a First drive roller 119 is preferably the motor 118 is an electric gear motor or a hydraulic or pneumatic motor. A second drive roller 120 and a third drive roller 121 are rotatably hinged to the support device 112. A number of straps 122, preferably V-shaped, engage in corresponding grooves in rollers 119, 120 and 121 and create a surface with high friction. The axes of the Drive rollers 119, 120 and 121 lie essentially in a plane which is essentially parallel to the The container outer surface 111 extends. The drive rollers 119, 120 and 121 extend at a distance of the support 113 from the support facility 112 downwards. A first lateral guide roller 123 is arranged essentially opposite the first drive roller 119. A second guide roller 124 is arranged opposite the drive roller 121. The axes of Roiien i 19 and i23 lie essentially in one plane, and the rollers 121 and 124 also lie essentially in one plane. The roller 123 is rotatable in attached to a pivot bearing 125. The pivot bearing 125 is supported by a shaft 126 which is in one of the Frame or the support device 112 attached storage 127 is carried. A pretensioner or spring 129 is used to the pivot bearing 125 and the lateral guide roller 123 in the direction of the Preload drive roller 119. The guide roller 124 is installed in a similar assembly 131, which biases the guide roller 124 towards the drive roller 121. The rollers 123 and 124 can be around their Rotate the central axis and move towards and away from the adjacent drive roller, however, their axes of rotation being substantially parallel to the axes of rotation of the associated drive rollers being held. A roller adjuster 132 is attached to the frame 112. The roller adjuster is preferred a liquid or compressed air operated piston and cyan device with an extendable one Rod 135 or an extendable arm; the rod 135 is operatively engaged with one Pressure roller frame 136, which in turn carries two pressure rollers 137 and 138, which also act as pressure rollers can be designated and are supported in this pressure roller frame 136. The pressure rollers 137 and 138 have axes of rotation which are in a plane which is essentially normal to a plane in which the axes of rollers 119, 120 and 121, and normal to one Plane in which the axes of the rollers 123 and 124 lie extends. In this way, form the three sets of Roiien a channel or a guide channel, with the drive rollers 119, 120 and 121 one side of the channel, rollers 123 and 124 the opposite side and rollers 137 and 138 the upper limit of the channel

141 form, in FIG. 2 is a first foam tire

142 arranged in the channel 141. The foam strip 142 is substantially adjacent to one Foam strips 142a are arranged, and a fibrous batting 144 is between the foam strip 142a and the container outer surface 111 arranged. A guide roller assembly 145 is on the support arm 114 and is used, if desired, to hold the device 110, i.e. H. head to To keep the application of the insulation at a distance from the outer surface of the container 111. A limit sensor 146, e.g. a single pole electric changeover switch, a pneumatic control valve or the like, is of the guide roller assembly 145 and is supported with a device not shown for controlling the Location of device 110 connected. Therefore, when the rollers 147 of the guide roller assembly 145 is over the container outer surface a predetermined distance

111 no longer hernhu-n. cine appropriate correction made in I ig. i is gate tier on Welding 150 attached to frame 12 is shown.

Fi g. 4 schematically shows the position of the support zungsarmc 114, the lateral positioning device 116 and one along the hog-shaped support frame movable car relative to each other. Numerical figures 153 and 154 denote side parts of an arched support frame similar to those in FIG. 1 shown arcuate spiral winding head supports fei and 87. Side panel 153 has a first disposed therein Rack 155, while a second similar rack 156 is arranged in the side part 154. A Frame 158 of the carriage is arranged between the side parts 154 and 153. The frame 158 carries a first gear 159 and a second gear 161. The gears 159 and 161 mesh with the Racks 155 and 156. The gears 159 and 161 are at the same speed of one motor not shown driven. The frame 158 carries an adjustably mounted support frame 163. The Support frame 163 is adjustable with frame 158 via first and second supports 165 and 166, respectively Length connected. The adjustable length supports can be of any construction however, advantageously be and will be in the form of a conventional scissor-type lifting device driven by a motor, not shown, which is driven by the one shown in FIGS. 2 and 3 limit sensor 146 shown is operated.

The F i g. 5, 6 and 7 show three terrifying views of the welding head 150, which is shown schematically in FIG. 3. The welding head 150 includes a Frame 170 with which it cooperates. In the frame 170 are first and second guides 171 and 172 trained. A substantially wedge-shaped heating plate 174 is attached to a carriage 175 which is arranged displaceably on the guides 1.71 and 172. A linear adjuster 177, such as e.g. Legs pneumatic or hydraulic piston and cylinder device, is immovable on the frame 170 attached and connected to an ann or a connecting device 178. The arm 178 is in substantially U-shaped (for mechanical simplicity) and is adapted to convert the carriage 175 into a from two extreme positions that are allowed by the guides 171 and 172 to move. To the Frame 170 is attached to a first or vertical support 181. The support 181 carries an upper pressure or Pressure roller 182. which engages an upper part of the foam strip 1416. With the top The side of the foam strip is that side meant that is removed from the last applied strip and from the heating plate. The vertical Support 181 or the frame 170 carry a second or separating roller 184, which is used to maintain a desired Distance between a previously applied foam strip such as the foam strip 141c and the foam strip 141b that is being applied is provided. The separation roller 184 is substantially parallel to roller 182. As shown in Figs. 5 and 6 have rollers 182 and 184 storage devices 182a and 184a, each dividing the roll into two sections and the surface the roll with the foam strip 1416 to be in engagement without hindrance from an external repository, which in certain cases is in interference with a wall, such as. B. the in F i g. 6 wall shown purple, can come. F.itiL lateral guide roller 186 is rotatably mounted in the frame I / O and extends on both sides of the! the hot plate and creates an inevitable lYihnrii;

Ί read frame on an already applied ^ chai ::; i strips of fabric, like / .. 15. the strip 14Ic in Fig.b. Preferably, the frame 170 is pivotable on the frame of the head for the application of insulation fastened by means of a first pivot bearing 188. That

i »Swivel bearing 188 allows a rotary movement by one Axis that lies in a plane that is essentially is parallel to the plane of the heating plate. The pivot bearing 188 in turn carries a horizontal one or second pivot bearing 189. which a movement

ii of the frame 170 in a plane parallel to the plane the heating plate and around a to dc-i level of 1 ieizp'attc normal axis allowed. A linear adjuster 191, such as. B. a hydraulic piston and cylinder device, which with a hydraulic fluid or

-0 Pressurized gas source is in connection, can serve. position the frame 170 relative to the frame 112.

In Fig. FIG. 8 is a schematic of an embodiment of FIG Isolation material source 78 according to FIG. 1 and

-i generally designated by the reference number 200. the Insulating material source 200 is a welding or connecting device that is particularly useful with pre-shaped bars or strips made of plastic foam is suitable and is equipped for this purpose.

to connect the strips with their ends or a Establish connection by butt welding the strips. The source of insulation material or weld assembly 200 comprises a frame 201 on the rotatable first and / wide Züführaninebsro'len 202 and

ν ") 203 are attached. The drive rollers 202 and 203 are driven by a motor not shown. A second pair of drive rollers 205 and 206 are shown in FIG arranged at a distance on the frame 201 and independent of a suitable one, not shown Drive device driven. The first and second pairs of drive rollers have substantially parallel axes and are arranged on one side of the frame 201. Preferably each is Pair of rollers, d. i.e., roles 202 and 203 and roles

⁴ ^ 205 and 206, each spring biased against each other and set up to accommodate a foam strip of a corresponding dimension between them. The frame 201 has guides or guide slots 208, 209 and 210. The guides 208,

w 209 and 210 are parallel to each other and take one carriage 212 sliding in it. The carriage 212 is free between rollers 202 and 203 and rollers 205 and 206 slidably adjustable. The carriage 212 has a guide or sliding guide 214 formed therein, which extends in a direction substantially perpendicular to the main dimensions of the guides 208,209 and 210 is. A heating plate 215 is slidably mounted in the guide 214. A first pair of Carriage guide rollers 217 and 218 with axes substantially parallel to and parallel to each other The axis of the roller 202 are arranged substantially adjacent to the rollers 202 and 205. A second pair of carriage guide rollers 219 and 220 are rotatably attached to the carriage 212 and opposed to the rollers 217

t> 5 and 218 arranged. The axes of rollers 219 and 220 are substantially parallel to the axes of rollers 217 and 218. Rollers 203,219,220 and 206 form one Side of a foam passage or a foam guide

tion 2:21. The second substantially parallel opposite side is formed by rollers 202, 217, 218 and 205. The remaining side of the foam passage or channel 221 is formed by the frame 201. In the channel 221 is a first foam strip 221, ·; and a second strip of foam 22ib is shown with the ends thereof abutting the heating plate 215. The heating plate 215 is operationally combined with an adjustment device which, for. B. in the form of a linear actuating device, such as a compressed air-operated or hydraulic piston and cylinder device, which enables the heating plate to be arranged at least partially in channel 221 or completely withdrawn from channel 221. To simplify the illustration and to keep the illustration clear, this setting device is not shown. A resilient biasing device 223, such as. B. a spring is connected on the one hand to the carriage 212 and on the other hand to the frame 201 in such a way that it pushes or pulls the carriage 212 in the direction of the feed rollers 202 and 203. The frame 201 has an additional surface 224 which is remote from the rollers 202 and 203 and is disposed substantially adjacent to the rollers 05 and 206 and is adapted to receive material from the latter.

In operation of the source of insulation material or weld assembly 200, a foam strip, such as. B. the strip 221a. fed to the rollers 202 and 203. The strip passes through the channel 221 with the heating plate 215 being withdrawn just before the end of the strip passes the heating plates 215. The end of the strip 221 i> is inserted between the rollers 202 and 203 and pressed into a position between the guide rollers 218 and 220. The heating plate 215 is disposed between the ends of the strips, and the ends of the strips are forced into contact with the heating plate by either manually or by means of the rollers 202 and 203, a pressure on the strip 221 is applied b. Because of its spring-loaded installation, the carriage 212 allows the hot plate to be substantially freely positioned between the ends of adjacent strips. Once the ends of the thermoplastic; When the foam has been heated to a desired extent to allow it to adhere, the heating plate 215 is quickly withdrawn and the heat-softened ends are brought into a position where they abut. The heat dissipation from this area causes a solidification of the thermoplastic material between the Schaurristoffstrifcn and welds them together. The welding is preferably carried out in such a way that the axes of the two strips deviate slightly from an aligned alignment, this deviation being approximately adapted to the curvature of the surface to be covered by the foam. Such a deviation from alignment can usually be achieved simply by hand or by adjusting the guide rollers 217 and 218. By providing such minor misalignments, stress concentrations at the weld spots are avoided when the strip is passed around a curved surface, such as a ballast. B. the in F i g. Foam strips 81 shown in FIG.

In Figure 9 is an optionally provided feed device 230, which are attached to the surface 224 of the device 200 according to FIG. 8 can be used.

The feeder 230 comprises a frame 231, which is optionally integral with the frame 201 of Welding assembly 200 or optionally detachable from the last cream frame 201. To the Position of the feed device relative to the welding assembly The rollers 205 and 206 in FIG. 200 can be seen more easily. 9 in broken lines drawn. The frame 231 carries a number of heating elements 233, 234, 235 and 235a. The heating elements 233, 234, 235 and 235a are essentially linearly elongated. The heating elements 233 and 234 are arranged substantially adjacent to the face of the frame 231, while the heating elements 235 and 235a are spaced vertically from the base and in positions substantially coincide with the bottom and one side of the channel 221 of the weld assembly 200. Essentially adjacent the heating elements 233 and 234 is a first loading roller 236 rotatably the frame 231 stored. A second application roller 237 is adjacent the heating elements 235 and 235a arranged. The first application roller 236 has respective grooved protruding rims 236a and 236 /?, which are arranged adjacent to the heating elements 233 and 234. The application roller 237 has a like pair of cantilevered rims each of which is respectively adjacent to heating elements 235 and 235a is arranged. One of these protruding rims 237a is shown. A guide roller 238 is in operational connection with the application rollers

236 and 237 to put a foam strip on the roll

237 to press. A similar guide roller is provided in connection with the application roller 236, however, it has been omitted from the illustration. Substantially adjacent to the application rollers 236 and 236 237, cooling devices are preferably provided in the form of air nozzles, the cooling devices adjacent to the application roller 236 are designated by 239 and nozzles 241 are designated adjacent to the application roller 237 are provided. Substantially adjacent to the air nozzles and in a remote location from the Applying rollers 236 and 237, two sets of guide rollers 242 and 243 are provided. These leadership roles 242 and 243 essentially form a continuation of the channel 221 in FIG. 8 and extend with their axes parallel to rollers 205 and 206.

Fig. 10 shows schematically the roller arrangement in a section along a line 10-10 through the feed device 230 in FIG. 9 and shows the position of the Applying rollers 236 and 237 and roller 238 together rr.it c; ncr fourth Roue 23Sd shown in FIG. 9 is not shown relative to each other. The axes of the four roles are essentially in a Ebep.e, and the Rollers are arranged to form a passage 221c through which a strip of foam, such as e.g. the strip 221c /, is guided. An elongated reinforcement 245, such as. B. a filament or yarn is in operational engagement with the protruding rim 237a of the application roller 237. the Reinforcement 245 is preferably from a source of reinforcement filament 246, e.g. B. a spool, drum or other suitable device, fed. Similar reinforcements are provided to the grooved protruding wreaths 2376, 236a and 2366 supplied from sources not shown

In this way, a continuous strip of foam coming from the welding construction uDDe 200 will arrive

Locations corresponding to the heating elements 233, 234, 235 and 235a are heated. The thermoplastic foam will softened to an easily deformable state, but only to a temperature below that at which a substantial decomposition takes place. Reinforcing fibers, such as. B. the elongated reinforcement 245, are then inserted into the foam surface, which has become plastic due to the heat, by means of the protruding wreaths 23Sa, 2366, 237a and 2376 of the application rollers 236 and 237, respectively. Generally one is used as an insulating layer suitable thermoplastic foam relatively stiff at ambient temperatures. Under these conditions the collapsed foam will harden and the filamentary reinforcement will be effective in it lock in. Such reinforcement can be made depending on the requirements of the particular construction being made from a glass fiber strand or a glass fiber roving to a single metal wire, such as. B. a smooth fence wire, vary. Preferably a such elongated reinforcement is applied to the part of the strip which will then be the outside of the structure, d. H. of the insulated container, forms and on the part of the strip which lies between adjacent strips. on thus, that of projecting rims 237a and 2376 lies in the completed construction Reinforcement applied to the outer surface of the insulation, such as the outer surface of the foam layer 83 in Fig. 1, and the fibers associated with the projecting rings 236a and 2366 are on the lower surface of the foam strip 81 in FIG. Such reinforcement filaments or Yarns are particularly advantageous when a foam strip of relatively large dimensions has a curved surface is bent because when bending the outer surfaces are exposed to significant tensile forces are. After the insulation is made, the elongated reinforcement is advantageous when the insulation Stress is caused by temperature differences between the inner and outer surfaces the isolation can be effected.

FIG. 11 shows a schematic representation in FIG a cross-section through the foam and heating elements taken substantially along line 11-11 in Fig. 9 shows the arrangement of the heating elements 233, 234, 235 and 235a of the feed device 230 according to FIG relative to a foam section, such as. B. the foam section 221c /. Corresponding parts of the Foam 233a, 234.7, 2356 and 235t are in the collapsed resp. shown molten state.

Fig. 12 shows schematically the attachment of a foam source, such as. B. the source of insulation material 78 according to FIG. 1 on the circumferential platform 74. The Isolierbzw. Foam source 78 preferably comprises a combination of devices such as those shown in FIGS. 5, 6, 7, 8, 9, 10 and 11 are shown. The source of insulating material 78 is suitably such attached that they by means of a Schwenkvcrbitnung 251, such. B. a ball joint, a gimbal Universal joint or any other known joint of such a type to a solid angle is pivotable.

The hinge 251 is preferably on a stand 252 worn with an adjustable height, the / .. I). in Form of a hydraulic cylinder, an adjustable frame, a pinion and / or a timing device or some other mechanical equivalent can be. The height adjustable execution or ·.

the height adjustable stand 252 is slidably supported in the supporting peripheral platform such that that this adjustable stand 252 is positioned around the circumference by means of the support means 253 can be.

13 shows a schematic representation of a Top view of the circumferential platform 74 according to FIG. 1, from which a circular guide device or Guide track 255 can be seen, soft the support element or the support means 253 according to Fig. 12 receives and performs. The welding or connecting head 200 according to FIG. 8 with the feeding device according to FIGS. 9, 10 and U or without them Device carried as shown in Figures 12 and 13 provides a preformed continuous Foam strips to the spiral winding head 82 according to FIG. B. the arched one Spiral winding head carrier 61, rotates around the container 41 and the spiral application of insulation allows the container to be positioned near the top 42 of the container. The remaining parts of the insulation can either be applied by foaming in place or alternatively in prefabricated sections which are then installed in their place.

In Fig. 14 is a sectional view of the device of FIG. 1 is shown, the relative Position of the arcuate spiral winding head carrier 61, the container outer surface 44, of the spiral winding head 82.

ίο the foam layer 83 according to Fi g. 1, of the frame 158 according to FIG. 4 and the laying head 84 for applying the vapor protection cover according to FIG. 1 shows one another.

15 and 16 show, in a schematic representation, two views of an in operation Laying head 84 according to FIGS. 1 and 14 for applying the vapor protection cover, the Sequence of elements is shown having a vapor barrier cover on the surface of the foam layer 83 at a rate approximately equal to the rate of application of the foam layer is. In Figs. 15 and 16, a source or a supply 260 a continuous strip of a thin deformable, as protection against steam usable material, such as. B. a metal or plastic film with an adhesive or adhesive Layer is provided. A spiral belt 261 is withdrawn from the supply 260 and forming rollers 262, 263, 264, 265, 266 and 267. The roles are arranged in three pairs. The rollers form 262 and 263 the first pair, rollers 264 and 265 the second pair, and rollers 266 and 267 the third pair. The first and the third pair of rollers serve as holding rollers or clamping rollers or friction rollers, while the Rollers 264 and 265 are each built into a frame that is relative to the first and third pairs of rollers is displaceable, whereby the deformable strip are stretched adjacent to one of its edges can to stretch the tape from its planar or cylindrical shape enough to allow it is adapted in shape to a surface curved in two directions. to which it applied w inl. How out Fig. 1 can be seen is; the extent of the ei foriU · ι borrowed Stretching on the cylindrical rim of the container

⁽ ' ⁵ equals zero and increases as the animal head 84 approaches the upper part 42 of the container 41. The correctly stretched or in-stretched film 261.7 is fed to a flange forming unit 270 /

preferably comprises a shoe 271 and a guide 272, the shoe being arranged in a recess of the guide. The shoe 271 and the guide 272 together enclose a space 273. This space changes in shape from a flat slot at Λ to a U- shaped shape at B. The deformable strip 261a is then brought into a U-shaped shape 2616. The U-shaped structure then comes into engagement with idler rollers 274 and 275, which engage the web of the U-shaped structure, and with first and second idler rollers 276 and 277 engaging the flanks. The rollers 274 and 275 and the roller pairs 276 and 277 serve to guide the U-shaped strip 2616 and to bring it into a desired position at a distance from the molding shoe 271 and essentially adjacent to the foam insulation 278. A heater 279 is positioned adjacent the foam insulation. The heater 279 serves to heat the foam insulation and a thermoplastic heat seal layer on the strip 2616 that is positioned adjacent the foam. At a location designated by the reference numeral 261c, the essentially U-shaped strip 2616 is brought into adhesive connection with the foam insulation 278. The strip 2616 has a first flank or a first leg 281 and a second or lower leg 282. The leg 282 is brought into close contact with a leg 281a of the previously applied vapor barrier and comes into engagement with heat seal rollers 283 and 284 which the thermoplastic Connect coatings on legs 282 and 281. A leg wrapping shoe 286 is disposed adjacent the heat seal rollers 283 and 284 and remote from the forming shoe 271. The '''' device or shoe 286 for rolling around the legs or the flange formed from the legs has a first or inlet end? 87 and a second or outlet end 288. The shoe 286 is a gently rounded channel with a substantially larger ^{4 ()} rounding at inlet end 287 than outlet end 288. Adjacent outlet end 288 is an idler roller 291 which engages a rolled edge 292 emerging from the mold or shoe 286. A device or shoe 294 ^4l for folding of the flange is adjacent to the roller 291 and 286 located away from the device and the shoe to roll the flange. the Flanschfalteinrichtung 294 has an input end 295 and an output end 296. the shoe 294 is ^{5 (>} to the Double flange and fold the rolled edge 292 to form a seam 297. Adjacent to the outlet end 296 of the shoe 294 is a idler roller 298 which is used for wedging iter positioning of the laying head 84 in its desired position is used.

FIG. 15A shows the mounting of the rollers 264 and 265 in a view along the line \ 5A \ 5A in Figure in a schematic representation. 15. The rollers 264 and 265 are installed substantially in parallel mounted in a frame 301 ^b0. The frame 301 is operationally engaged with a welded connection or a bearing 302, this bearing 302 being fastened to the laying head 84. A linear displacement causing actuating or Positionicreinrich- ^h5 tung 304 is pivotally bcfestigi at a remote location from the bearing 302 on the frame three hundred and first At its end remote from the frame 301 , the positioning device 304 causing a linear displacement is also attached to the frame of the laying head 84.

In this way, the angle of the axes of the rollers 265 and 264 can be easily changed from its to the Rollers 262, 263, 266 ur.d 267 parallel position are pivoted to a substantial deviation, the is sufficient to stretch the spiral tape 261 to the desired extent. For the purposes of In the illustration, the spiral belt 261 is shown as a flat or planar strip. However, it may for many For purposes of application, it may be desirable to use a corrugated strip in which the corrugations are relatively are small and have a length which has about 10 to 50 times the thickness of the spiral belt and wherein the height of the corrugation corresponds approximately to the thickness of the spiral belt.

In FIG. 15B, a cross section through the spiral belt 2616 along the line \ 5B- \ 5B in FIG. 15 is shown.

Fig. 15C shows a section through the spiral belt 2616 taken along line 15C-15C in Fig. 15 and shows the Shape of the flange after heat sealing with an adjacent similar spiral band and after the Passage through flange winding device 286.

15D shows a section through the spiral belt 2616 along the line 15D-15D in FIGS. 15 and 16 and the flange after deformation by means of the shoe 294.

17 and 18, an alternative embodiment of the spiral winding head 320 for applying the insulation is shown. This spiral winch head 320 is for applying the insulation particularly for the distribution or application of foamed in place Kiinststoffverbindungen. such as B. suitable foamed in place polyurethane, epoxy resins, phenolic foams, and the like. The spiral winding head 320 comprises a frame 321. A fastening and positioning device or a pin 323 is arranged on one side of this frame 321. The positioning device 323 is pivotably articulated on a support arm 324 , which corresponds to the support arm 114 in the embodiment according to FIGS. 2 and 3. An actuating device 325 which brings about a linear displacement is pivotably articulated on the pin 323 and corresponds completely to the lateral positioning device 16 in the embodiment according to FIGS. 2 and 3. A guide roller assembly 326 is attached to arm 324 and corresponds entirely to the guide roller assembly 145 in Figures. 2 and 3. The frame 321 carries a set of side rollers 328, 329 and 331 rotatably mounted thereon. The side rollers 328, 329 and 331 are spaced substantially parallel to one another with their axes substantially coplanar. A side forming belt 333 passes around rollers 328, 329 and 331. A second set of forming rollers 335 and 336 are rotatably attached to frame 321 . Rollers 335 and 336 are substantially perpendicular to rollers 328, 329 and 331 , and a top or capping tape 338 is around these rollers. 335 and 336. Straps 333 and 338 form two sides of a channel. The drive rollers 331 and 336 are in driving engagement with a drive motor 341 via a reduction gear 342. The output shaft 343 of the reduction gear 342 is connected to a drive transmission mechanism or a gear set /. 345. its output

shaft forms a right angle with the drive shaft driven by the reduction gear and drives the roller 331, and the output shaft 343 of the reduction gear is also in engagement with a transmission device or a sprocket 346, which in turn drives a second sprocket 347 which is in operative engagement with the roller 336 is adjacent to the roller 338 and at a distance from the roller 331 an idler roller or guide roller 348 is arranged, which is intended to be a permeable strip of fabric, such as. A light, coarsely woven linen or cotton fabric, from a strip supply spool 351, which supply spool is supported on the frame 321 substantially adjacent to the reduction gear 342. A mixer assembly 353, which is also referred to simply as a mixer in the following, is arranged substantially adjacent to the guide roller 348 and is adapted to receive suitable foam material for the production of a foamable, hardenable material, which in turn is ejected through a manifold 354 which contains the foamable, curable material. ejects settable material at a location substantially between the distal ends of tapes 333 and 338, respectively. The spiral winding head 320 for applying the insulation is shown in engagement with a container wall 356 on which a layer of a fibrous insulation 357 is arranged, e.g. B. can be a fiberglass wadding. A first inner strip of fabric 358 is arranged between the last-mentioned insulation 357 and a cured foam body 359 which was expelled through the manifold 354. A similar foam body 359a is immediately adjacent to the foam body 359 arranged. In this way, the shock tire 358, the foam body 359a, the belts 333 and 338 form a rectangular channel into which the visible, hardenable material is ejected. Advantageously, adjacent to the belt 333, a vapor protection cover 361 is arranged between the belt and the foam body 359 and is brought into an adhesive connection with the foam body during curing and setting. An upper or cover material strip 362 is advantageously guided between the belt 338 and the foam body 359 , as a result of which an advantageous reinforcement of the insulating layer is achieved. The upper cloth strip 362 which is preferably of the fabric strip supply roll 351. shown in Fig. 18, supplied and passes over the cloth guide roller 348 and then onto the surface of the belt or band 338. Advantageously, between the roller 335 and the roller 348 a Falteinrichmng 364 arranged to fold the edge of the fabric which is adapted to fold the edge of the fabric, e.g. B. the strip of fabric 358, and to fold it into a desired shape.

FIG. 17A shows a shape that is desired at location 365 in FIG. 17. 17A is an enlarged sectional illustration of a foam strip 359a on which an upper strip of fabric 362a and a side strip of fabric 358a are arranged. A releasable film strip or a releasable layer 367 is provided substantially adjacent to the uppermost portion of the fabric strip 358a, which is arranged between the upper surface 362Λ of the fabric strip 362a and a folded file 358 / ^ of the fabric strip 358a. Such a film or coating preferably consists of | \> | y; iih \ len. l'olytetrafluoroethylene , a hydrocarbon wax or a similar material which does not easily adhere to the fabric strip or the foam.

An alternative arrangement is shown in Figure 17B in which a top panel 362i>, a side panel strip 358c and a film insert 368 which overlaps the top strip of fabric 3626 and prevents that Gluing together adjacent sections of the foam body in this area is shown. The two Arrangements according to FIGS. 17A and 17B provide stress relief when the surface of the Foam insulation adjacent to container wall 356 is below the temperature of the outermost one Part of the foam adjacent to the Dampfschulzabdek kung 361 is lowered.

F i g. Figure 19 schematically shows one type of stress relief suitable for use with preformed foam strips. In Fig. 19, a preformed applied foam strip 370 is shown which has an outer surface 371, an inner surface 372 and an upper surface portion 373rd An adjacent or upper foam strip 375 has an outer surface 376 and an inner surface 377 and a lower surface 378. The lower surface of the strip 375 has a protruding portion 379, while the lower strip 370 has a protruding portion 374 . The protruding portion 379 of the upper strip engages the upper surface 373 of the lower strip 370 in a position substantially adjacent to that

so outer surface of the strips 370 and 375, the two foam strips being welded to one another at their junction or otherwise connected. A gap or unwelded area 381 is created between these two strips 370

1 and 375 are formed in an area substantially adjacent to inner surfaces 372 and 377 .

In this way, when the inner surfaces 377 and 372 are cooled to low temperatures and tend to contract, the forces exerted on the welded portions of the foam will have directions such that resulting cracks tend to be in directions more or less parallel expand to surfaces 371, 376, 372 and 377 rather than perpendicular to them. Suitable pre-formed foam strips with

⁴ '> projections or protruding surfaces that are formed in the correct position can be made by means of any foam molding technique, such as. B. cutting with hot wires, sawing, milling or the like can be formed.

A partial view of an embodiment 390 is shown schematically in FIG. 20. The embodiment 390 comprises a wall 391 with an insulated surface 392, with a first porous, fibrous insulating body 393 being arranged on the surface 392 of the wall 391. A second insulating body 394 made of a fibrous material is arranged on the surface at a distance from the insulating body 393 . The insulating bodies 393 and 394 form a spacing or space 395 between them. A first strip 397 of a thermoplastic plastics material is arranged substantially adjacent to the insulating body 393 and away from the surface 392. Fin / wide strip 398 is disposed adjacent to strip 397. The strips 398 and 397 are closed by cmc inner seals

^h '''or lung Heiß.'ichweißung 399 connected to each other The Hcißschweißung 399 is substantially adjacent to an outer flat 401, the ius V.reifen 397 398 the isolation and formed and enrern;. \ <m pet

Surface 392 of wall 391 located remote from outer surface 491 of the insulation and adjacent to it of surface 392 is a stress relief slot 402 formed between the insulating strips 397 and 398 in its of the fibrous insulating bodies 393 and 394 In the remote area, the slot 402 ends in a recess 404 with a bulbous or oval or circular cross-section. Fibrous reinforcing elements 406 are incorporated into the insulating strips 397 and 398 embedded A metallic vapor barrier element 408 is arranged on the surface 401 of the insulating strips 397 and 398

The embodiment shown in Figure 20 is particularly suitable for cooling containers that are relatively work at low temperatures. The distance 395 between the fibrous insulating bodies 393 and 394 is formed, creates a suitable way for evacuating gaseous material, which through the Wall 391 could escape, and the slot 402 with its bulbous end 404 creates a substantial one Stress relief when a substantial temperature gradient is established that occurs when the The temperature of the wall 391 drops significantly below the ambient temperature.

In Fig. 21 a section of a section through an insulated container 410 is shown schematically, which has a container wall 411 with an outer or isolated surface 412. A compressible one fibrous batting 413 is disposed adjacent surface 412. Fibrous batting 413 may preferably consist of glass fibers or of inorganic or organic fibers. The batting 413 has one of outer surface 414 remote from wall 411. A reinforcing fabric or strip of fabric 415 is disposed substantially in contact with surface 414. One foamed in place Insulation 417 is disposed adjacent to the fabric strip 415 and includes a first and lower, respectively Strip 418 and a second and upper strip 419, respectively, these strips 418 and 419 strips from at its Represent place foamable material, which by a foam applicator, such. B. the one in Fig. 17 and 18 shown device. A second reinforcing strip of fabric 421 is arranged essentially in the middle region of the insulation 417 and lies essentially parallel to the first strip of fabric 415. A non-sticking or non-sticking film strip 423 is arranged between the first fabric 415 and the second fabric 421 in a layer which represents the connection surface of the insulating strips 418 and 419. A third or outer fabric 424 is in substantially parallel to the first fabric 415 on an outer surface 426 of the cellular insulation 417 arranged. A fourth or side fabric 427 extends from the first fabric 415 to the second fabric 424 and is embedded in the foam material, while this z. B. by the in the 17 and 18 shown device is applied. A strand-like, roving or yarn-like Reinforcement 429 is arranged in insulation 417 in desired arrangements.

F i g. 22 shows another embodiment of a stress relief slot 435. The slot 435 is is formed between the first insulating strip 436 and the second insulating strip 437. The stripes 436 and 437 form an outer surface 438 and an inner surface 439. The slot 435 extends from the inner surface 439 inwardly towards surface 438 and ends substantially in the middle between surfaces 438 and 439 in a substantially arcuate, inwardly concave manner Extension 435a.

The embodiment shown in FIG. 22 is particularly advantageously applicable in cases where extreme temperature fluctuations are desired, and it is desirable that all cracks form against the inner surface 439 and, if possible, not parallel to it Surface 439 or the outer surface 438 extend.

23 shows a further alternative embodiment of a connection between adjacent thermoplastics Strips 441 and 442, which are generally designated by reference number 440. A fabric reinforcement 443 in the form of a folded strip with end edges 444 and 445 is adjacent to the outer one Surface 446 of connection 440 is provided. The fabric strip 443 forms an inner bead 448. The inner bead 448 is disposed in a slot 449 and has a shape substantially similar to that of the Slot 402 in FIG. 20 is The fabric reinforcement 443 and its bulbous ending 448 are essential Tendency for cracks to propagate toward outer surface 446.

F i g. 24 shows a further embodiment, generally designated 450, of a connection which is shown in FIG essentially similar to the arrangement 440 according to FIG. 23 is. The connection 450 according to FIG. 24 differs differs from the according to FIG. 23 in that the fabric reinforcement 451 has a first strip 452 and a second strip 453, which extends from the outer surface 454 inwardly into a slot 455 of im substantially similar shape to the slot 402 according to FIG. 20 extend. Sections 452 and 453 of the Reinforcements that lie in an end portion 456 with a bulbous or oval cross-section are glued to or with those surfaces in Brought adherent connection and form an effective resistance against cracking of the reinforced area.

25 shows, in a schematic manner, one type of connection of a pre-foamed, molded cover cap 460 with an insulation 461 which was created in a spiral on a container 463. To the Container 463 is attached to a ring 464 by means of a number of pins or rivets 465. The ring 464 is in turn connected by rivets to a flanged ring 466 which has a substantially in Diameter directions arranged flange 467 and a substantially vertical flange 468 having. The connected rings 464 and 466 form a tight seal on the foamed in place Insulation. The cap 460 ends in a protective ring 470 which is substantially opposite the ring 466 is arranged. The rings 466 and 470 are advantageously made of materials of low thermal conductivity, such as B. glass fiber reinforced plastics made, the plastics z. B. polyester and epoxy resins could be. The rings 466 and 470 are connected by means of a strap 472 that goes through in place Soaking glass fibers with suitable hardening plastics, such as. B. Epoxyharzcn is produced. The joint is then covered with an annular layer 474 of plastic foam insulation which preferably in the same manner as the insulation 461 foamed in place.

In Fig. 26, an alternate tank insulation layer 480 is shown. The insulating layer 480 comprises a number of loops or turns of foamed plastic material, which are designated by the reference numerals 481, 481λ and 4816. Each of ^r> turns or loops 481 is of substantially rectangular elongate shape and has a pair of spiral grooves 482 formed therein, and 483, the angeordne- adjacent in the longitudinal direction in the insulating loop or convolution by an insulative to the surface ^lu th surface 484 to an opposite or distal surface 485. The spiral grooves 482 and 483 are at a distance which is up to a quarter of the height of a strip, arranged from the connection planes between the strips 481 and 4816 and extend substantially parallel to this connection surface. The strip 481 further includes a number of transversely extending slots 486 which are substantially perpendicular to the spiral grooves 482 and 483 and which extend the entire thickness or height of the strip 481. The foam strip 481 is in adhesive connection with the strips 481a and 4816, as already described above. A thread-like reinforcement or fabric 487 is disposed on the surface 485. The fabric 487 extends over the edges of the foam strip 481 and surface 485 of the foam strip 481 and extends between the strips 481 and 481a and also between the strips 481 and 4816 at locations adjacent to the surface 485 and remote from the surface 484 lie. Adjacent portions of the fabric are glued together without directly gluing the strips 481, 481a, etc. together, thereby creating an additional slot between the strips. When a series of strips, such as strips 481, 481a and 4816, are applied, the reinforcing fabrics reinforce the bond between adjacent strips as well as the outer surface thereof and create a form of tear limitation that is particularly strong at the junctures between adjacent strips or strips. Turns. An insulating layer 488 is disposed over the fabric 487. This insulating layer 488 can also consist of plastic foam and be brought into adhesive connection with the tissue. A protective or metal layer 489 is disposed on the insulating layer 488 away from the surface 485. Both layers 488 and 489 are applied simultaneously with the strip 481 and welded or glued to the previously applied material or brought into some other adhesive connection.

The embodiment shown in Fig. 26 can be used particularly advantageously when there are extreme temperature differences between the inner surface of the insulation adjacent to a container and the outer surface, e.g. B. the outer layer or the Protective coating 489. By having slots such as spiral grooves 482, 483 and 486 and the like Slots, provided in adjacent turns, will cause the insulation to crack due to the thermal shrinkage controlled in a predetermined manner and is to areas other than that Connection areas between adjacent turns of the insulation are limited.

Although in Fig. 26 the slots with a finite As shown in width, the foam is preferably made with slits of relatively narrow width during manufacture

⁶⁵ provided. Sawing or slitting of synthetic plastic foam without the formation of kerfs is known. Further, although the shape of the slots is depicted as generally rectangular, other shapes can be used if desired.

Another alternative embodiment of the isolation is shown schematically in FIG. 27 and is general denoted by the reference number 490. The insulation 49 (is essentially similar to that shown in FIG and comprises a number of insulating strips 491, 491. ' and 491b, which are in adhesive connection with each other are brought. The strip 491 has first and two "slots 492 and 493, which are essentially ir Extend longitudinally in the same and correspond to the slots 482 and 483 in FIG. Dei Strip 491 has a first side 494 and a second side 495. The slots extend from the surface 494 to a location adjacent to surface 495. Surface 494 and corresponding surfaces on the strip 491a and 4916 have a 4% fabric arranged thereon. It can often be an advantage if there; Tissue 4% in places where it is with the slits 492 and 493 in area 494 communicates, is separated. A reinforcement fabric 497, similar to the fabric 487 in FIG. 26 is disposed on surface 495 that is remote from surface 494. The fabric 497 is urr strikes the strip 4916 and extends into the interface between the strips 491 and 491a as already described above. Over the fabric strips 497 and corresponding fabric strips is an insulating layer 498, e.g. B. a one-piece skinned polystyrene foam sheet, and Furthermore, a protective layer or a protective cover 499 is arranged at a distance from the surface 495 In the joints between the adjacent strips 491, 491a and 4916 there are a number Reinforcing bands 501 arranged. The tapes 501 are preferably applied prior to the application of the stripper applied to this, this application is preferably carried out at a location that is irr substantially corresponds to the source of insulating material 78 and the strips e.g. B. a number of elongated Include filaments made of a thermoplastic plastic base material or a plastic matrix which is heat sealed or otherwise to the underside of the strip prior to feeding be connected to the spiral winding head. So if z. B. the strip 491 made of polystyrene foam consists, the reinforcing strips 501 filaments or yarns, such as wire or fiberglass, contain the previously have been covered with polystyrene and welded to the underside of the foam strip, to provide reinforcement both for the transport of the strip to the spiral winding head and for the to create finished insulation construction. The embodiment according to FIG. 27 creates a controlled one Crack formation in the substantially equatorial area and reduces crack formation in the meridional direction by means of the reinforcement fabric 496.

Using the present method, isolation can be performed in several ways on one curved or arched surface can be created. A stiff insulation, such as a plastic foam, can be placed substantially in contact with the wall of the container, or alternatively with or without one loosely fibrous wadding should be placed at a distance from this wall. If you wish, go through one

To use thermosetting foam instead of thermoplastic foam, suitable adhesives, like epoxy plastics, easily replace the weld with heat to keep the insulation in to connect a one-piece body. The insulation can be skinned; H. with a Reinforcement, such as B. a fabric on the inner and / or the outer surface. In a similar way Thus, a fabric can be arranged in the connection between adjacent turns of the insulating material be, wherein preformed slots or areas of low adhesion can be provided around the Control cracking under tension. Suitable reinforcing elements can be in any desired Arrangement can be applied either by heat welding or adhesive bonding or by being in a foamable, curable compound are included. This way the insulating layer can almost any desired characteristic can be given.

In this way, even cylindrical containers can be insulated using a suitable arrangement of Guide rails is used by, for example, a guide rail at the top of the container and at the lower end of the container carrying a suitable straight spiral winding head support. To simplify the illustration, the

Control devices and control circuits omitted. Most of the applications are simple Limit switch can be used to set the desired positioning of the spiral winding head or the laying head for to reach the vapor protection cover.

In certain cases, when using preformed foam strips, it may be desirable to use the Welding device such. B. the in F i g. 8 shown welding device, in a modified form perform by moving the welding plate vertically, e.g. B. the welding plate 2) 5, provides, in order to create a connection which essentially has the shape of the connection according to FIG. 19, thereby allowing better flexibility of the strip when the diameter of the loops or turns decreases, and whereby a voltage equalization space is also created, which is in the extends substantially vertically at the junction.

In this way, depending on the requirements of the individual case when insulating a container, the Insulation from the bottom up, from the top down, or in any desired or In a convenient manner, the foam insulation can be applied in almost any desired configuration with or without reinforcement and with or without stress relief.

For this purpose 10 sheets of drawings

Claims (24)

Patent claims: 1. Insulated container with at least a part of the container outer surface covering Foam layer and optionally at least one covering the outside of the foam layer Covering layer, the foam layer being built up in ring zones, thereby characterized in that the foam layer (83) consists of a continuous spiral wound Foam strips (81) is formed, the successive turns of which at least in the from the container outer surface (44) distant parts of the spiral stroke are connected to one another. 2. Insulated container according to claim 1, characterized in that one along the spiral joint Spiralnui (482, 483) is formed, which is open to the container outer surface (44). 3. Insulated container according to claim 1 or 2, characterized in that the container (41) is a spherical container is. 4. Insulated container according to one of claims 1 to 3, characterized in that the cover layer a vapor barrier layer and / or a perforated reinforcement layer for the insulating layer is. 5. Insulated container according to one of claims 1 to 4, characterized in that the cover layer is formed by a continuous, possibly perforated, spiral band (261;), the successive turns are connected to one another at the edge. 6. Insulated container according to claim 5, characterized in that the spiral belt (261) of one Metal band is formed. 7. Insulated container according to one of claims 1 to 6, characterized in that the foam strip (81) is provided with a film-like reinforcement (245) which is optionally integrated into it. ^{4 (1} 8. A method for producing the insulation on an insulated container according to any one of claims 1 to 7, characterized in that the foam strip (81) is preferably placed in a single layer over the outer surface of the container (44) in a spiral, ⁴ "> by the respective accruing section of the foam strip (81) is simultaneously subjected to an orbital movement and an axial movement relative to the container ^{outer surface (44), and that the adjacent turns r} > n placed on top of one another are connected to one another at a distance from the container outer surface (44). 9. The method according to claim 8, characterized in that the Spiralbanci (261) of the cover on the container (41) is placed in a spiral by the respective accumulating portion of the .Spiralbandes (261) at the same time an I Inilatifbcwegung and an axial movement relative / u the Behälteraußcnfläche (44) unierworfen Uird and that the successive Spiraihandw 'indungen edge of mileinan- be connected ^b0. H). Veil.-diirn m ;;, h Ansj '· borrowed''. thereby identified / eirhnei. il.ii * ii'-. '> ^! ιΙΙί ι;. :: ^ :! ' des S (. haiimstoffl'streifens (81) i'ii'i -U .-- Sp, r ■ ·: '■■, .'- ..' es (2hlJ 111 a Ai'Ih'1 | si :; ui.-: π- ^; <- ^; v: - im.i ■ -.-> -n, · ,, - ^ pir; Hsieiirimü ^h 5 Il Y
(huhu i '| 'MirÜchc 8 i) is H). ΐκ-n of the outer surface of the container (111) and the foam layer formed from the foam strips (142, 142a ^ and optionally successive turns of the foam strip (142, 142a,) an intermediate layer, for example from wadding (144) is applied. 12. The method according to any one of claims 8 to 11, characterized in that the foam strip (81) is formed from a foamable mass which is foamed in the course of application to the container. 13. The method according to any one of claims 8 to 11, characterized in that oer foam strips (142, 142a,} by connecting one to the other Variety of short sections of foam strip (142,142 ^ is formed. ! 4. Method according to one of Claims 8 to 13, characterized in that in the course of the application of the foam strip (81) in the foam layer a filament-like reinforcement (245) is introduced. 15. Device for carrying out the method according to one of claims 8 to 14 characterized by a spiral winding head carrier (61, 87), which approximately along a maneuver line of the stationary held container (41) runs, a drive (65, 91) r.jm moving the spiral winding head carrier (61, 87) over the circumference of the container (41) and a spiral winding head (82, 93) which runs along the spiral winding head carrier (61,87) is movable. 16. The device according to claim 15, characterized in that the spiral winding head carrier (61, 87) is stored in a bearing (69, 92) located in the axis region of the container (41) and de Drive (65, 91) for the spiral winding head carrier (61, 87) is attached outside of the bearing (69, 92). 17. Apparatus according to claim 15 or 16, characterized in that the spiral winding head (82, 93) is designed to deliver a bead of foam. 18. Apparatus according to claim 15 or 16, characterized in that the spiral winding head (82, 93) a device (110) for applying and connecting, in particular welding, the ends having successive portions of the foam strip (142). 19. Device according to one (of claims 16 to 18, characterized in that the spiral winding head (82, 93) has a welding head (150) for Has welding of adjacent turns of the spiral Sehaumstolfstreifcns (81). 20. Device according to one of claims 16 to 19, characterized in that the spiral winding head (82,93) has a laying head (84) for placing a Has spiral tape (261) on the insulating layer. 21. The device according to claim 20, characterized in that the spiral winding head (82, 93) a connection device (279, 285, 284). in particular a heat sealing facility / to seal of the spiral band (261) with the insulating layer and / or for connecting the edges hena.-harder Turns of the Spiralbamies (2τ 1) - .. 1 »-.« - ·. : ■ 22. VoiTichliiui · 'laugh emc; ¹ '-I ·'; -V -; '■■' -ι- · ■ i- "s 21, thereby gc-kenn / en hnci. <. ';'. Ii ι; -. ^{1 v} : ■■.;: · .. ■■:.: · ■ head (82, 9?) A Xiiluiirei-.i κ '■■ ·' »· (-Mil · ; · <■ - ■ addition of lil.imeMai-tifc'i 'H - "■ '■ · ■';:;; ■ _t ' ^k ·::' ■ _ rial / υ dem Spanish S ₁ h .-; :: - · - · .. <· - · ■ · ■ iSI) 23. The device according to claim 22, characterized in that the feed device (230) for feeding the filament-like reinforcement (245) is designed for introducing the same into the foam mass bead ί 24. The device according to claim 22, characterized in that the feed device (230) for feeding the filament-like reinforcement (245) of the device for applying and connecting successive sections of the foam '"strips (142) is assigned, such that the reinforcement (245) is attached to the abutting portions of the foam strip (142) before they are laid out on the container (41).