DE19600249A1 - Pipe insulation kit composed of parts and method of manufacturing such parts - Google Patents

Abstract

A pipe is surrounded by a number of insulation elements; each insulating element 1 comprises a curved external covering 2, especially a sheet of metal or plastics material, having flanged edges 4, 5 and containing rigid foam 3 provided on its joint surface with a layer of flexible foam 4 with a channel for the pipe and optionally complementary formations 7, 8 for engaging with like element(s). The element may be semi-cylindrical, or third or quarter-cylindncal. Alternatively, the element comprises two semi-cylinders hinged together at the covering 2. Extra elements may lie inside such elements to build up an insulating assembly. <IMAGE>

Description

The invention relates to a composed of parts Pipe insulation kit according to the preamble of claim 1 and a manufacturing process of such parts.

Such parts are in particular according to document 93 05 308 Known the problem of tube insulation in place represents, and tries to do this by isolating parts from manufacturers to fix position.

However, this solution has the disadvantage of not being sufficiently sealed be, despite the in a longitudinal groove on the surface of the ver Binding arranged seal.

The present invention leads to great relief in the case of insulation technology by means of insulation parts that are factory-made are produced, and their attachment to insulated Tubes are particularly simple, fast and very tight against areas liquid and condensate.

For this purpose characterize in the characterizing Part of claim 1 means the invention.

The insulating parts are simply attached around the pipes on site, which significantly shortens installation times and also the advantage  brings with it that isolation with the perfect you and the foam in manufacturing quality very tight against Steam is. This quality of insulation enables effec tive sealing of tubes by liquids with temperatures flow between -200 ° C and + 100 ° C.

The different peculiarities of a pipe system can by an adjustment to be taken into account on site, e.g. B. for the pipe branches and other accessories that equip the pipe system. Due to the close contact between the outer casing and the Rigid foam gives you a strong mechanical resistance that it may even allow the thickness of the sheath to increase to reduce.

In all cases, the insulating part is made of two connecting tops limited areas with which the or the other parts connected and the curved edges of the film that forms the wall always lie on the connection level, where a soft foam reduces or eliminates air circulation and thereby the cor prevents tube corrosion. This foam also dampens the Dimensional tolerances.

The invention also relates to the production process of an iso part.

One method of the invention is to insert the gel layer into the Mold and then bring the permanent mold before the polyester polymerized. This procedure enables close contact between the polyester and the permanent form. A band prevents them Permanent form ,. stick to a certain place and therefore will the opening easier.

The present invention will hereinafter be described in detail of the figures.

• - Fig. 1 is a schematic perspective view of a first embodiment of an insulating element according to the invention.
• - Fig. 2 is a schematic perspective view of a second embodiment of an insulating element according to the invention.
• - Fig. 3 is a sectional perspective of the assembly of Iso lierteile according to FIG. 1st
• - Fig. 4 is a sectional perspective of the position of a Varian te of an enveloping insulating part.
• - Figs. 5A, 5B, 5C show three stages in the manufacture and processing of a film which forms the outer wall of an insulating member of FIG. 1.
• Figure 6 is a schematic perspective view of a model for the production of an insulating member of Figure 1 -...
• - Fig. 7 is a cutaway perspective view of a set of a plurality of models and a partition for the preparation of an insulating member of FIG. 4.
• - Fig. 8 is a longitudinal section of the connection of 2 colliding insulation sets.
• - Fig. 9 is a cross-section according to IX-IX of Fig. 8.
• - Fig. 10 is a half cross section showing 2 colliding insulating parts before they are assembled without using an assembly wrench.
• - Fig. 11 is a perspective view of an outer wall, which serves to prepare 4 insulating parts for Isolierwinkelstücke simultaneously.
• - Figure 12 is a plan view of a Isolierwinkelstücks..
• - Fig. 13 shows a variant of an insulating elbow.
• - Fig. 14 is a side view of the assembly of the Ver linkage of 2 insulating parts of FIG. 12 or 13th
• - Fig. 14A shows the detail A of FIG. 14.
• - Figure 15 is a cutaway perspective view of a tube in the height of a flange joint, showing the entirety of the insulation, taking into account the expansion of the diameter of the flanges..
• - Fig. 16 is a sectional perspective of an insulation kit at the height of a valve.
• - Fig. 17 and 18 show schematically the assembly of insulating parts in the height of a T-connection.

In general, the invention relates to an insulation kit for Tubes, which consists of insulating parts and be around a tube  is solidified by a warm or cold liquid flows.

According to the example of Fig. 1, this insulating part 1 appears , the z. B. comprises half the circumference of the entire insulating set, shell-shaped, and the outer casing 2 consists of a film such. B. made of sheet metal or plastic. This covering comprises a part made of hard foam 3 . The edges 4 , 5 of the casing 2 are bent at an angle; they serve to assemble two parts ( 1 ) on top of each other or to close an insulating part on itself, as will be shown later; the compilation is made in the longitudinal direction, ie in the direction of the tube.

There is a layer of soft foam on the side which fits the connection plane and which is itself shaped from the plane side of the part, as shown in the figure, which is turned upside down. Depending on the, the foam fits under the edges 5 of the outer casing 2 . through part 4 or not.

A longitudinal recess 6 appears on the connecting plane, the shape of which is adapted to the tube to which this insulating part is intended; it is z. B. the shape of a half cylinder of circular section.

The layer of soft foam 4 can also be continued by the longitudinal savings 6 by a part with the corresponding shape 4 ''. The foam layer 4 is preferably placed in the casting mold and the mass of which the hard layer 3 is made is then guided into the casting mold, sticks not only to the inside of the casing 2 , but also to the inside of the layer of soft foam 4 .

The other side of the soft foam 4 preferably carries an adhesive sheath, which is protected by a peelable film, so that the assembly of the two insulating parts 1 is possible with each other.

Depending on requirements, only one of these insulating parts is provided with a layer of adhesive for this compilation and the other is not, or both insulating parts carry a layer of adhesive. The side of the connection level also carries male / female mounting parts 7 , 8 , raised and recessed with respect to the connection level and provided with identical cuts, in the corresponding positions with respect to the axis of the reservation 6 of the tube. These mounting parts 7 , 8 extend over the entire length of the insulating part 1 .

According to the invention, such parts 1 are assembled around the pipe to be insulated so that the male / female mounting parts 7 , 8 interlock and form baffles in the connecting plane.

These baffles improve the impermeability and insulation and ensure a certain blockage. During assembly, the angular edges 5 of the outer wall 2 are supported on one another under the action of assembly means, which are not shown, such as. B. pliers or adhesives.

In this example, the edges 5 of the film that forms the outer wall are bent inwards. In certain cases it can be interesting that the assembly edges are angled outwards.

The insulation parts often correspond to half a whole Insulation around a pipe, and the connection between 2 parts is produced in the diameter plane through the pipe. Other Forms of manufacture are possible, such as. B. a quarter circle or a third circle or a whole circle.

The materials of the parts are carefully selected according to very specific Criteria selected.  

The outer casing must be:

• - a high-performance obstacle against the outflow of water steam (a phenomenon that affects the performance of the insulation would disturb)
• - aesthetic and resistant to aging in the various industrial environments (the material depends on the environment exercise).
• - resistant to mechanical aggressiveness in connection with the rigid foam.

The rigid foam must:

• - have a very low coefficient of thermal conductivity and the mini times cost per unit volume.
• - be hard enough to bear the mechanical loads, which the outer jacket conveys or the weight of the pipe systems.
• - be easy to use in the workshop.

The soft foam, mainly in the connection levels is used and wherever dimensioning imperfections must be present:

• - be soft enough to accommodate the dimensioning errors of the pipe or to be able to correct the connection points.
• - a relatively strong coefficient of resistance to water have steam to withstand this process.
• - A thermal conductivity coefficient similar to that of the hard foam ha ben.

The only difference between the manufacturing processes of the insulating parts 101 in FIGS. 1 and 2 is that the connecting plane does not carry a male / female assembly point, but a smooth surface. The different parts of these manufacturing processes, identical to the manufacturing process according to FIG. 1, have the same references and their detailed description is not repeated.

Fig. 3 shows the merging and assembly of parts 1 on a tube 9 , the teeth of the male union / female assembly parts and the meeting of the curved edges. Only the connecting means of the casings 2 have not been drawn. Since parts 1 are identical, they can mesh. Because of this form identity, the figures use the same references to designate the same pieces of the parts. In fact, this cross-section in the same figure shows two shape variants of the insulating part 1 ( 101 ): on the right, insulating parts 1 according to the manufacturing method of FIG. 1 and on the left, insulating parts according to the manufacturing method of FIG. 2.

It is also possible to combine the means of the two production processes in the same insulating part as it appears in FIG. 3.

Fig. 4 shows another example of an insulating member according to the invention. This insulating part is in one piece. Indeed, it consists of two pseudo pieces connected by a part that in turn forms a hinge and the manufacture of which will be described later. This part 102 consists of an outer casing 21 made of a single outer wall with 2 angular edges 22 , 23 , which solidly support two circular half cylinders 24 , 25 made of light, hard insulating material which adheres to the wall and thereby acquires its arched shape.

In the middle 26 of the wall 21 of this part, the pieces 24 , 25 of rigid insulating foam, which correspond exactly to the halves, are separated from the inner surface of the wall in order to facilitate the opening of this zone 26 , which is the hinge. For this reason, before the foam is introduced, a band 27 is attached to the inside of the wall along zone 36 as a joint, the upper part of which does not adhere to the foam 24 , 25 .

The joint 26 , which is formed by the outer wall 21 , allows a partial opening of the insulating part 102 to such an extent that the pipe 9 to be insulated can be inserted and placed in its reservation ( 28 , 29 ), formed by depressions 28 , 29 in each piece 24 , 25 , can push.

For the same reasons as above, these sides in front of the two pieces 24 , 25 of part 101 may be male / female mounting locations that form a bully against permeability and blockage.

This chicane is shown as an example only on one half of the two pieces of hard foam 24 , the other piece has a smooth surface at the connecting plane.

The connecting plane of the two hard pieces 24 with a layer of soft foam 32 as described above, equipped 33 and at least one side of the two foam layers 32, 33 is firmly adhered and carries a peelable film, which is removed to the two layers 32, 33 opposite to connect.

The isolation part 102 is closed, as in the previous cases, by assembling edge to edge of the angled pieces 22 , 23 and blocking it by gluing the layers 32 , 33 and any connecting means (not shown) for the casing 21 at their edges 22 , 23 .

In the various examples of the insulating parts 1 , 101 , 102 mentioned above, the connection levels are equipped with male / female mounting pieces 7 , 8 , 30 , 31 with a triangular section; other shapes are conceivable and the number of such pieces may differ from the examples mentioned above.

When assembling the protective paper with silicone on the Removed adhesive layer, and by pressing both Insulating parts are effectively glued on the entire surface. This Pressure is achieved with the help of tensioning screws that fit exactly be attached to the outside.

This pressure is essential to the foam on its upper surface to be pressed so that the insulating parts to be assembled despite geometric errors at the connection level come. If the tensioning screws are removed, it will continue to exist a close connection and the necessary external forces for the Impermeability is zero. Certain zones of the  Soft foam pressed and others expanded depending on the irregularity levels, but the forces compensate each other this way.

This procedure enables the technical requirements for Impermeability but does not allow that Removal of insulation.

If the dismantling should be possible, the connection sticks do not level as it has just been described, but become set up a facility that the soft foam during its pressures throughout use.

This facility can be tapes with the help of good tightened clamping screws are pulled, or mounting chips on the fold of the outer casing. Finally, about the impermeable casualness of this longitudinal seam on the curved piece of To complete the outer casing, you bring a seal of the type seal butyl rubber (or similar). This seal will in the factory covered with a silicone paper that is assembly is removed.

FIGS. 5A-6 show an example of Herstellungsverfah proceedings of the insulating parts as on Fig. 1. According to Fig. 5A, starting from a sheet metal or plastic sheet 40, the edges 41 are at right angles bent or will be, possibly with a whole Fold to achieve a double thickness 42 according to FIG. 5B, the stretchability of the film is used to give it the shape of a half cylinder ( FIG. 5C) and this shape is blocked in a model 43 ( FIG. 6). Depending on the length of the insulating part, a certain number of models is distributed.

The basic shape, which is formed in this way from the curved film 40 , is placed in a model 43 , with a lid 44 which carries a tubular center piece 45 , which forms the pressure core from as a recess for the pipe to be insulated.

According to this example, the cover 44 shows the shapes 46 , 47 of the assembly pieces. It consists of a plate reinforced with transverse strips 48 , for example upright of the models 43 .

Before the basic form prepared in this way is covered with the cover 44 , the cover is equipped with a soft foam film 49 , the side of which is coated in the direction of the cover with a layer of adhesive which is protected from a peelable film, not shown in the figure. The set is against the lid 44 z. B. held together with negative pressure.

When the basic shape is prepared in this way, the insulating foam 50 is injected, which adheres to the wall 40 and blocks the curved shape. This foam definitely sticks to the soft foam 49 .

It is clear that the processing of this basic shape can also be carried out with a lid 44 without the molds 46 , 47 and only smoothly.

In this example, the foam layer 49 is formed by two longitudinal bands, which meet in the middle piece 45 , just in case one can only provide a single foam blanket, which also includes this middle piece 45 , so that the pipe to be insulated can be subsequently wound.

The set is held by removable mounting means to facilitate opening and molding of the insulating member as shown in FIG. 11.

The length of the insulating part can be standardized or can be fitted accordingly. It is sufficient to use a film 44 of suitable length and to adapt the models 43 and the lid 44 to one another. The ends of the insulating part are equipped so that the longitudinal connection is facilitated by giving them insulating properties and mechanical resistance.

The models enable the production of insulating parts with  a certain diameter according to the physical parameters and the insulation property to be achieved. For the same model you can choose different lids, depending on the cut or Shape of the pipe to be insulated and the shape of the mounting pieces, to be poured

Fig. 7 shows in cross section. Production of an insulating part as in FIG. 4. For this purpose, a lower model 60 is used , which has a semicircular recess 61 in order to obtain the piece of film 61 which forms half of the wall of the insulation steeply. After the film 62 has been inserted, upper models 63 , 64 each complete this lower model 60 in the form of a quarter circle. Inside the film 61 , which was inserted in the lower model 60 , a partition 65 is best placed in a vertical diameter for the ventilation holes of the upper piece. This partition wall 65 is formed from a tube 66 , which has the same section as the tube that the insulating part is obtained. This tube carries two wings 67 , 68 , which are similar to those of the cover in FIG. 7. If necessary, the tube is made of one piece and the wings are welded; it is also possible to provide a split tube with two halves which are attached to the wings and which are made in one piece. This partition protrudes above 69 from the closed tube, which is formed by the film with the angular edges 70 , 71 ge.

After the injection of the insulating foam, the insulating piece thus produced is removed from the pieces 72 , 73 by removing the upper models 63 , 64 , after which the part can be easily opened in order to pull out the partition wall 65 .

Since the wings 67 , 68 have a certain thickness and in the case of a whole film for the scope of insulation after casting, there is a gap between the insulating pieces, this gap, which is not at the level of the angular edges 70 , 71 , the to the Thickness of the sheet of the wings, at the other end in the opposite direction to the angular edges.

Such a space has a disruptive effect on the performance of the insulation, so it is provided in the inven tion that one does not simply inject into the basic shape, but that the surface of the wings and the half pipe is previously lined with a blanket of soft foam, then the actual insulating material 72 , 73 is injected, so that one obtains insulating parts, the mounting surface of which is formed by foam ceilings. This can compensate for certain irregularities, especially on the surface of the pipe (excess thickness due to welding beads, etc.).

The insulation material sticks or adheres to the injection the foam blanket that doesn't stick to the walls of the mold.

It should be noted that the foam blanket at the moment of Injection compresses to come back after molding expand and fill the gap smoothly if that Insulating part is placed around the pipe.

The foam blanket can be an "Armaflex" blanket or similar. to be (entered Trademark).

According to one method, a gel layer is placed in the mold, then put the polyester and finally the soft foam before the polyester polymerizes.

The casing produced in this way receives in one second phase, the permanent forms made of rigid foam, which in turn Wear soft foam at the desired locations.

The soft foam between the permanent forms and the casing enables a close contact between permanent forms and the outside sheathing.

Another method is to pour the gel layer into the pour form, then in the permanent form before the polyester polyme rized. This procedure allows close contact between  to achieve polyester and permanent form. A band prevents that the permanent form sticks to a certain point and makes it easier thereby opening up.

FIGS. 8 and 9 show in longitudinal section and in cross section the assembly of two colliding insulating parts 103 according to the preparation method Fig. 1 or 2.

This connection point is said to have excellent tightness ensure to prevent the passage of water vapor and finally a reduction in the insulation properties to avoid.

Each part 103 consists of an outer casing 80 and a hard foam core 81 , as well as soft foam layers 82 (Fi gur 9 ).

For assembly at the connection point, a part in the form of a key 104 is provided, which is inserted into a recess or into a recess 83 in the front 84 of each insulating part to be bonded. This reservation 83 has the shape of a peripheral recess which opens out on the side of the pipe 105 to be insulated.

This mounting part 104 consists of a two-part hard foam core 91 with a covering of soft foam 92 . A soft foam layer 93 is z. B. in the cavity made of rigid foam 91 to sit on the tube 105 . The outside of the casing 92 and the inside of the soft layer 93 are provided with an adhesive layer, on the one hand to attach themselves to the parts 103 in the peripheral recess, and on the other hand to support the tube 105 . This creates a barrier that prevents the passage and circulation of steam.

The opposite sides are not glued together. In general, it is sufficient to ring the connection point with a node 94 .

Fig. 8 shows in more detail the composition of the key and an insulating set 103 , 104 , which shows the realized barrier against steam. This barrier prevents steam circulation between the insulating kit and the tube 105 , or limits the circulation at least to the length of an insulating kit between two connections. In the case of an insulation kit with a soft casing, the side of which is turned against the pipe to be insulated, the key 104 forms an additional lock.

Since the key has a diametrical division level, it is over For safety reasons it is preferable to make this parting plane angular to offset in relation to the insulating parts by this Keys are connected, e.g. B. at an angle of 90 °.

In order to facilitate the production and the inventory to min the keys have such dimensions (diameter, length ge) that they are to form a series of insulating parts own.

If in general the recesses at the end of an insulating part can be manufactured in the factory in special cases for insulating parts that are adapted on the spot, the Recesses can also be made on the spot.

FIG. 8 shows the case of an insulation kit which consists of a piece which is folded into itself as in FIG. 4.

FIG. 10 is a half-section of a variant of the forth position of the ends 122, 123 shows, the two insulating parts 120, 121 connect with each other, which are arranged on a tube 124.

The end 123 of one or both opposite ends is formed by a foam layer with an adhesive coating for the vapor-tight assembly.

Fig. 11 shows a possible manufacturing process of the insulating parts for an angle.

For this purpose, a piece 140 is produced by flat punching, in the form of a torus cut in its plane of diameter (like a cake tin); This piece gives the outer wall of several insulating parts, in particular 4 insulating parts, each corresponding to an angle of 45 ° or 8 parts for an angle of 45 ° (which make a total of 360 °).

The inner wall 141 and the outer wall 142 of the film 140 are angled GE. This piece 140 contains a lid, which is not shown, then you inject the insulating foam into this shape.

The foam sticks to the punched piece, but not to that Cover. To remove it, remove the lid and its toroidal core. You get a sentence that is in 8 or four Insulated parts should be divided for angles of 45 ° or 90 ° or from smaller angles 30 °, 22.5 ° etc.

It is enough to cut or cut this piece depending on the radius saw. In the most common case you cut arches at an angle of 90 °, other usual angles are also possible, e.g. B. 45 ° or 135 ° each upon need.

The relationship between the angled insulating parts is like that Assembly of the straight parts carried out by an assembly run from edge to edge by using assembly tools such as pliers used.

Fig. 12 shows an example of an insulating member 150 for an angle of 90 ° with an outer casing 151 , delimited by two strips 152 , 153 inside and outside in the plane of symmetry of the assembly. The recess 154 in the angle of the tube is made by impression. At each end there is a cavity for assembly 155 , 156 to obtain a key as in Figs. 8 and 9.

Since the outer casing 151 is realized by reshaping, for example by flat punching in the case of a sheet metal, the shapes will be limited for reasons of tooling or inventory. The outer sheathing (see Fig. 11) is only made for a few diameters and not just for a continuous series. The diameters are suitable for insulating parts in an angular shape, the radii of curvature of which correspond to the radius in the casing.

It is, for example, so that the center of curvature O coincides loaded in the recess 154 of the part 150 of the tube with the middle portion 150, but it corresponds to only a possible curvature radius R of the tube.

In order to use the same sheathing 151 for different angular parts with a bending radius (R ′), but still adjacent to the bending radius (R), the recess 154 ′ is realized by a core for which the radius of the bending center is no longer at O, but instead moves outwards on the bisector that corresponds to the angular part.

Although the production of the recess by a molding core is interesting, it is also possible to proceed by means of factory production, e.g. B. with a model. The two parts 150 are brought together as shown in FIG. 14, which shows the foam layers 156 . Detail A on FIG. 14, which is presented on FIG. 14A, shows an adhesive tape 157 which is applied between the edges 152 . FIGS. 15 and 16 show two passages of an assembly of Isoliersatzes with keys.

According to FIG. 15 of the Isoliersatz comprises the connecting flanges 200, 201 of two tubes 202, 203. The tubes 202 , 203 are equipped with insulating parts 204 , 205 , as described in one or two parts above, and the description of which is not repeated here.

The increase in the diameter of the connecting flanges is isolated by an insulating part 206 , the nature of which is similar to that of parts 204 , 205 , ie consisting of an outer casing 207 and a part 208 made of rigid foam. Between this part 206 (of one or more parts) and the tube 202 , 203 on both sides of the connecting flanges 200 , 201 there is a key 209 , 210 , the outside diameter of which is adapted to the inside diameter of the part 206 .

These keys 209 , 210 have the same properties as the key on FIG. 8, namely an inner part 211 made of hard foam, which carries a jacket 212 , 213 made of soft foam on the outside and inside.

The bond between the parts 204 , 206 and 205 , 206 is produced by two transition parts 213 , 214 , each having an outer casing 215 and an inner part made of hard foam 216 .

Each transition part 213 , 214 is connected on the one hand to part 206 by means of two keys 209 , 210 , and on the other hand two parts 204 , 205 by means of keys 217 , 218 . Finally, the seals are covered with cover strips 219 , 220 , 221 , 222 .

The Isoliersatz a valve according to Fig. 16 is similar to that of Fig. 15, and only the different agents are beschrie ben here.

The various parts and means that are not described again are, but are identical or similar to the previous ones, have the same reference numbers, each increased by 100.

Schematically, the valve's insulation kit is derived from the predecessor, simply by extending part 306 , which has a tapered opening 401 on head part 400 , to an insulation part 402 (in one or two parts) of the same nature as that to obtain other insulating parts, and completed by a cover 403 , also with the same nature as the insulating parts. The cover 403 is connected to the part 402 by the key 406 . The various connection points are equipped with cover strips 319 , 320 , 321 , 322 , 323 .

Figs. 17, 18 show the assembly of the insulating parts at a T-connection of the pipe system. This assembly is adjacent (similar) to that in the described valve with parts 306 , 402 .

The insulating part 500 is provided with a miter cut 501 (at 45 °) in order to obtain the end 502 (with the same taper 45 °) of the part 503 .

The parts 500 , 503 in one or more parts have the same properties as the insulating parts already mentioned. This description is not repeated.

Claims (9)

1. Pipe insulation set, which consists of insulating parts that enclose the pipe via connecting surfaces and possibly male / female, homologous mounting parts ( 7 , 8 ), which extend over the entire length of an insulating part, wherein

• - Each insulating part ( 1 ) consists of an outer casing ( 2 ), in particular a sheet metal or plastic film which is bent in the form of a fillet, from a film which has curved edges ( 4 , 5 ), is built up and at least one Part of the peripheral corresponds to the desired insulation; the fillet accommodates an insulating part made of hard foam ( 3 ), which leaves a recess ( 6 ) in the shape and dimensions of the pipe to be insulated, characterized in that the insulating piece ( 3 ) with a layer of soft foam ( 4 ) the connection levels is equipped, and that the closure of an insulating part ( 1 ) in itself or the assembly of insulating parts with each other is provided side by side by layers of soft foam ( 4 ).

2. Pipe insulation kit according to claim 1, characterized in that the ends of the insulating parts ( 103 ) are equipped with recesses ( 83 ) to receive a tight tubular mounting part which covers the pipe to be insulated ( 105 ), which in both recesses ( 83 ) engages with respect to the two insulating parts ( 103 ) for their butt connection. 3. Pipe insulation kit according to claim 1, characterized in that the outer surfaces of the soft foam layers ( 4 , 4 ', 4 ''). are equipped with an adhesive film that is protected by a peelable film. 4. Pipe insulation kit according to claim 1, characterized in that the insulating part is formed from an arcuate film ( 21 ) which corresponds to the circumference of the insulating part to be produced, with two parts made of rigid foam ( 24 , 25 ), each one half of the total Insulation conform; which parts carry a layer of soft foam ( 30 , 33 ) on the open side, delimited on one side by the respective curved edge ( 22 , 23 ) of the wall ( 21 ) and the center of this wall ( 21 ) forms a longitudinal joint ( 26 ) which at least a part of the pieces allowed to open the pipe. 5. Pipe insulation kit according to claim 1, characterized in that the outer wall ( 140 ) is placed in the shape of a torusförmi gene fillet, which receives an insulating piece with a just in case toroidal recess. 6. Pipe insulation kit according to claim 1, characterized records that the outer casing on the side of the rigid foam has an intermediate layer of soft foam. 7. A method for producing an insulating part for a pipe according to claim 4, characterized in that one takes a position for the manufacture of a film ( 62 ) with a width corresponding to the order of the pipe to be insulated, that this film partially to a semicircular model ( 60 , 61 ) bends, that a partition ( 65 ) is then arranged diametrically inside the fillet produced by means of the film, that the lateral edges of the film are closed in order to form a complete envelope, and that the bending obtained is obtained with the aid of blocked by additional models len ( 63 , 64 ); the curved edges ( 70, 71 ) of the film form the wall which merges again against the partition ( 65 ), that the partition ( 65 ) has a tube ( 66 ) in the middle to form a mandrel which forms the Recess of the pipe to be insulated forms that the foam is then injected into the mold after the partition and, if necessary, the pipe ( 66 ) has been lined with a foam blanket that connects to the sprayed foam, and after going into the longitudinal zone ( 26 ) of the film ( 21 ), which serves as a joint for opening the two halves of the insulating part, an adhesive tape ( 27 ) has been placed on the inside of the film, the outside of this band not adhering to the foam of the insulating part. 8. A method for producing an insulating part to encase a win kel, according to claim 5, characterized in that:

• - One creates a piece ( 140 ) in the form of a torus cut in its plane of symmetry, wherein
• - the torus is placed in a cooling device,
• - you place the soft foam in the torus,
• - the foam is injected between the torus and soft foam
• - A lid ( 152 ) is placed on the cooling device during the expansion phase of the foam that
• - one forms and machine the impressions of the tube in the torus and then cuts the torus, whereby the lid is provided with a recess which corresponds to the angle of the tube or the recess is produced by machining with a model.

9. Manufacturing method of an insulating part according to claim 6, characterized in that

• - one lines the form with a gel layer that one
• - Then feeds polyester and covers the polyester with soft foam, whereby
• - Permanent molds are made separately from rigid foam, which are inserted into the casing after polymerization.