Insulated pipe system, insulated pipe section and method for manufacturing an insulated pipe section

Abstract

The invention relates to a thermal insulated pipe system comprising a pipe having an outer diameter and a thermal insulated pipe section mounted on the pipe, the pipe section comprising two longitudinal parts, each longitudinal part having a longitudinal opening providing a hole for accommodating the pipe, wherein the two longitudinal parts face each other in a symmetry plane, wherein in each longitudinal opening (3) of the part (2) two webs (7) are provided, each web (7) extending substantially to the symmetry plane (5) and being arranged at an angle (a) between 45° and 90° with respect to the symmetry plane (5), thereby comprising a first groove (8) between the webs (7) and a second groove (9) between each web (7) and a surface (10) of the longitudinal opening (3).

Description

Technical Field

[0001] This invention relates to an insulated piping system (piping engineering) comprising a pipe having an outer diameter and an insulated pipe section mounted on the pipe, the pipe section comprising two longitudinal halves, each longitudinal half having a longitudinal opening providing a bore for receiving the pipe, wherein the two longitudinal halves face each other in a plane of symmetry. Furthermore, this invention relates to an insulated pipe section particularly for the aforementioned insulated piping system (piping engineering), the insulated pipe section comprising two longitudinal halves, each longitudinal half having a longitudinal opening providing a bore for receiving the pipe, wherein the two longitudinal halves face each other in a plane of symmetry. Finally, this invention relates to a method for manufacturing the aforementioned insulated pipe section, the insulated pipe section comprising two longitudinal halves, each longitudinal half having a longitudinal opening providing a bore for receiving the pipe, wherein the two longitudinal halves face each other in a plane of symmetry. Background Technology

[0002] Corresponding piping systems and insulated pipe sections are known in the art. These sections are primarily prefabricated sections, for example, made of mineral wool insulation material, consisting of two halves or pre-cut sections for ease of application, and having a factory-applied foil layer and a self-adhesive overlap. The self-adhesive overlap allows the pipe section to be snapped onto the piping system, and the joint can then be completely sealed using backing tape.

[0003] The insulated pipe section includes a central longitudinal opening, providing a bore for accommodating the pipe to be insulated; the size of this bore is typically equal to the outer diameter of the pipe. Therefore, for each different pipe size, a corresponding pipe section needs to be manufactured and stored. This problem has been attempted to be solved due to the high costs of storage and logistics. However, improvements are still needed.

[0004] WO 96 / 37728 discloses an insulated pipe segment comprising two longitudinal members, each having a longitudinal opening providing a bore for receiving a pipe, wherein the two longitudinal members face each other in a horizontal plane. Pipe segments known from this prior art comprise an assembly of an annular insulating disc made of mineral fibers. This assembly has a first through-cut area on one side and a second non-through-cut area on the other side, the latter facilitating opening of the pipe segment when it is assembled onto a pipe. The insulating disc assembly is encapsulated in a sheet of material such as aluminum foil, which is bonded to the outside of the assembly by an adhesive. In cross-section, the assembly has a tubular shape having an outer surface and an inner surface facing the pipe to be insulated. The inner surface of the assembly has axially extending protrusions, which can be used to insulate pipes with different outer diameters. The protrusions are configured to be corrugated.

[0005] Furthermore, EP 1184614A2 discloses an insulated pipe section for insulating a tube, wherein the pipe section is made of mineral fibers. The pipe section has an outer cylindrical shape and holes with an oval or elliptical cross-section, which causes the inner surface of the pipe section to completely rest against the outer surface of the tube to be insulated. Therefore, cavitation between the insulated pipe section and the tube to be insulated can be avoided.

[0006] Finally, EP 0 744 574 A1 discloses an insulating element for isolating pipe components such as bends, T-joints, or valve components. This known insulating element is made of two longitudinal components, each having a longitudinal opening providing a hole for receiving the aforementioned pipe component, wherein the two longitudinal components face each other in a horizontal plane. The longitudinal opening of each component is provided with a slit that can be elastically or plastically molded or fractured. These slits are arranged parallel to each other and equidistant from each other, thereby forming a recess between two adjacent slits. The components of this known pipe segment are made of a foam material that has limited adaptability and flexibility to the outer surface of the pipe. Therefore, isolating these pipe segments from the pipe component as described above before fixing them to the pipe component results in a significant amount of work, as the holes in the pipe segment must be precisely prepared and shaped to provide the necessary insulating properties. Summary of the Invention

[0007] Therefore, the object of the present invention is to provide an insulated piping system (piping engineering) and an insulated pipe segment that is easy to install with pipes of different diameters and provides a close arrangement of the insulated pipe segment on the pipe without any preparatory work to adjust the pipe segment to the outer diameter or external shape of the pipe.

[0008] Furthermore, the object of the present invention is to provide a method for large-scale, low-cost, continuous production of insulated pipe sections.

[0009] Regarding the insulated piping system, the above objective is achieved by providing two webs in each longitudinal opening of the pipe section, each web extending substantially to the plane of symmetry and arranged at an angle (α) between 45° and 90° relative to the plane of symmetry, thereby creating a first groove between the webs and a second groove between the surfaces of each web and the longitudinal opening.

[0010] Furthermore, the above objective is achieved by an insulated pipe section having two webs disposed in each longitudinal opening in half of the pipe section, each web extending substantially to a plane of symmetry and arranged at an angle (α) between 45° and 90° relative to the plane of symmetry, thereby forming a first groove between the webs and a second groove between the surfaces of each web and the longitudinal opening.

[0011] The insulated piping system according to the invention includes a pipe having an outer diameter and an insulated pipe segment mounted on the pipe. The pipe segment comprises two longitudinally spaced and substantially identical halves, each half having a longitudinal space or opening for accommodating one half of the pipe. The two spaces together form an opening for the pipe. Each longitudinal space or opening includes a central first groove, first side grooves disposed on either side of the central first groove, and a second side groove. The grooves define a first wall between the central first groove and the first side grooves and a second wall between the central groove and the second side grooves, wherein a wall forming a web extends from a portion of the pipe segment surrounding the pipe into the opening and the orifice, and wherein the web substantially extends to a plane of symmetry, which is the plane in which the two halves connect to each other when the two halves are fixed to the pipe. This plane of symmetry preferably divides the pipe segment into two parts of the same shape. However, the pipe segment can be divided into more than two parts, particularly four parts, thereby forming two planes of symmetry perpendicular to each other.

[0012] By mounting components or pipe segments onto the outer surface of the pipe, the flexible webs are deflected, allowing them to seal any possible cavities and air pockets between the inner surface of the pipe segment and the outer surface of the pipe. For this purpose, it is advantageous to arrange the webs of each opening so that their free ends are slightly close to the outer surface of the pipe segment, resulting in a trapezoidal cross-section in the grooves between the webs. This feature has the effect that the webs deflect in a predetermined direction toward the outer side of the pipe segment. The webs can be partially arranged to be slightly offset toward the outer side of the pipe segment. Since the webs extend substantially to the plane of symmetry, they can be readily used to fill air pockets around the outer circumference of the pipe. Due to the flexibility of the webs, they are bent by arranging half around the pipe, where the webs remain in contact with the outer surface of the pipe. Insulated pipe segments can be readily mounted with pipes of varying diameters within a certain range, and the webs provide a tight arrangement of the insulated pipe segments on the pipe without requiring any preparation work to adjust the pipe segments to the outer diameter or external shape of the pipe. Therefore, insulated pipe segments can be used with pipes of different diameters without creating areas of insufficient insulation and / or air pockets. The web provides and can be used as additional insulating material to seal such air pockets.

[0013] According to another embodiment of the invention, the width of the first groove is greater than the width of each of the second grooves, wherein the width of the first groove is approximately three times the width of the second groove. This embodiment has the advantage that the free end of the web, which contacts the outer surface of the tube having a circular cross-section, is deflected to the outside of the tube segment, thereby making almost complete contact with the outer side surface of the tube and providing improved thermal insulation properties between the tube segment and the tube.

[0014] Furthermore, preferably, the width of each web is less than the width of the first groove, wherein the width of the web is preferably between 15% and 50% of the width of the first groove, for example, between 20% and 45%. This embodiment provides good flexibility in the deflection of the web relative to the outer surface of the pipe section.

[0015] Preferably, the grooves and webs are symmetrically arranged in the opening, allowing the components of the pipe segment to be mounted on the pipe in any manner. Therefore, the use of the components of the pipe segment is self-evident.

[0016] Preferably, the diameter of the opening is greater than or at least substantially corresponds to the outer diameter of the largest specified pipe within a certain range, wherein the web is used to compensate for small differences between the outer diameter of the pipe and the diameter of the opening. This pipe segment can be used for pipes of different diameters, so that the pipe diameter should not vary at large intervals. Furthermore, even when one end of the pipe has a recess to accommodate a portion of a pipe to be connected to a range of pipes with different diameters, or for use with a range of pipes with different diameters, this pipe segment can be readily used in the connection area of ​​pipe components.

[0017] According to another embodiment of the invention, the depth of the first groove corresponds to at least half of the outer diameter of the tube, while the width is less than the outer diameter of the tube, and the total width between the outermost edge of the first groove and the outermost edge of the second groove in the two second grooves corresponds to at least the outer diameter of the tube. The width of the first groove is preferably between 30% and 90% of the outer diameter of the tube, preferably between 35% and 80%, for example between 40% and 70%.

[0018] Furthermore, the first groove has a depth and a width, preferably a depth between 80% and 160% of the width, and the total width between the outermost edge of the first side groove and the outermost edge of the second side groove corresponds to at least twice the depth of the first groove. These features provide the possibility of using the pipe section in insulated piping systems, suitable for various pipes on which the insulated pipe section is to be installed. The material selected for the insulated pipe section according to the invention is factory-manufactured bonded mineral wool (MW), preferably asbestos. The mineral wool product is typically supplied with a density of about 50 kg / m³ to about 150 kg / m³, preferably about 90 kg / m³ to 120 kg / m³. This product is particularly suitable for building equipment and industrial facilities, and is also specified in European Standard EN 14303:2009.

[0019] However, it should be noted that, in principle, other materials can be used to manufacture the insulated pipe sections without departing from the scope of the invention, such as factory-manufactured flexible elastic foam (FEF), factory-manufactured polyethylene foam (PEF), or other basically flexible foams used for insulation. Attached Figure Description

[0020] Other embodiments and advantages of the insulated piping system and insulated pipe sections according to the present invention are described below in the description of the accompanying drawings, wherein:

[0021] Figure 1 This is a first embodiment of an insulated pipe section shown in cross-section;

[0022] Figure 2 This is a second embodiment of the insulated pipe section shown in cross-section;

[0023] Figure 3 This is a third embodiment of the insulated pipe section shown in cross-section;

[0024] Figure 4 This is the fourth embodiment of the insulated pipe section shown in cross-section;

[0025] Figure 5 The relevant dimensions of the insulated pipe section are shown;

[0026] Figure 6 This is the fifth embodiment of the insulated pipe section shown in cross-section;

[0027] Figure 7 The sectional side view is shown for manufacturing purposes. Figure 1 and Figure 2 Tools for insulated pipe sections;

[0028] Figure 8 The sectional side view is shown for manufacturing purposes. Figure 3 and Figure 4 Tools for heat-insulating pipe sections; and

[0029] Figure 9 It is based on Figure 6 Another view of the fifth embodiment.

[0030] Figures 1 to 4 Four embodiments of the insulated pipe section 1 are shown, differing particularly in their dimensions. The pipe section 1 consists of two identical longitudinal members 2, each having a longitudinal opening 3 formed for accommodating... Figures 1 to 4 The hole 4 of the tube is not shown. Components 2 face each other in the plane of symmetry 5 that divides the tube segment into two half-shells.

[0031] Pipe section 1 has an outer surface 6 and is made of factory-manufactured bonded mineral wool, preferably asbestos. The density, measured according to EN 13470:2001, is approximately 110 kg / m³. 3 .

[0032] In each opening 3, two webs 7 are configured to extend substantially to the plane of symmetry 5 and are arranged at an angle (α) of 90° relative to the plane of symmetry 5, thereby forming a first groove 8 between the webs 7 and a second groove 9 between the webs 7 and the inner surface 10 of the longitudinal opening 3.

[0033] Component 2 and web 7 are formed as one piece.

[0034] The cross-section of web 7 is rectangular. Furthermore, according to... Figure 1 and Figure 2 The cross-sections of the first groove 8 and the second groove 9 in the embodiment are also rectangular.

[0035] according to Figure 3 and Figure 4 The difference in this embodiment lies in the different dimensions of the pipe segment 1 and the shape of the second groove 9, which has a beveled bottom surface 11. The bottom surface 11 is inclined in such a way that the wall 12 of the groove 9 is shorter than the wall 13 of the parallel groove 9, wherein the wall 12 is arranged closer to the outer surface 6 of the pipe segment 1. Therefore, the two grooves 9 of the two components 2 have a trapezoidal cross-section.

[0036] from Figures 1 to 4 As can be seen, the width of the first groove 8 is greater than the width of each of the second grooves 9, wherein the width of the first groove 8 is approximately three times the width of the second groove 9, more specifically, approximately 2.4 to 3.7 times the width of the second groove 9. Furthermore, the width of each web 7 is less than the width of the first groove 8, wherein the width of the web depends on the size of the pipe segment 1 and corresponds to between 15% and 50% of the width of the first groove. The grooves 8 and 9 and the web 7 are symmetrically arranged in the opening 3.

[0037] As can be seen from Table 1 below... Figures 1 to 4 The dimensions of pipe segment 1 are shown. All dimensions are in mm.

[0038]

[0039] As shown in Table 1, the depth DC of the first groove 8 is equal to or greater than half the pipe diameter D; the width Wc of the central first groove 8 is less than the pipe diameter D; the total width Wt of the opening 3 is equal to or greater than the pipe diameter D; the depth dc of the first groove 8 is equal to the depth Ds of the side groove 9; and the total width Wt of the opening 3 is greater than twice the depth dc of the first groove 8. Therefore, the depth dc of the first groove 8 is approximately 95% to 117% of the width Wc of the first groove 8, while the width Wc of the first groove 8 is approximately 43% to 58% of the pipe diameter D; and the width Ww of the web 7 is 71% to 145% of the width Ws of the second groove 9. Furthermore, the width Wc of the first groove 8 is approximately 40% to 49% of the total width Wt of the opening 3; the width Ww of the web 7 is approximately 11% to 17% of the total width Wt of the opening 3; and the width Ws of the second groove 9 is approximately 12% to 17% of the total width Wt of the opening 3.

[0040] Figure 5 It shows that according to Figure 4 The dimensions of the insulated pipe sections are shown in Table 1. These dimensions are based on... Figures 1 to 3 , Figure 6 and Figure 9 All embodiments are effective.

[0041] Figure 6 and Figure 9 Another embodiment of the heat-insulating pipe section 1 according to the present invention is shown, compared with that according to Figures 1 to 4 The embodiment shown differs from the one with web 7. According to... Figure 6 In this embodiment, the web 7 is arranged at an angle (α) of approximately 70° with respect to the plane of symmetry. The first groove 8 is shaped as a trapezoid, and the second groove 9 has a wider width Ws in the region of its bottom surface 11 than the width Ws near the free end of the web 7.

[0042] The shape of the opening 3 of the web 7, having a first groove 8, a second groove 9, and a web 7 between the first groove 8 and the second groove 9, is created using a rotatably driven tool 14 that moves relative to the component 2, thereby forming two webs 7 that substantially extend to the plane of symmetry 5 and are arranged at an angle of 90° relative to the plane of symmetry 5. Forming two webs 7 means that grooves 8 and 9 are cut out from the solid material of the component 2. For this purpose, the tool 14 is a disc-shaped milling cutter having a central opening 15 and an edge region having two recesses 16 located on the sides of the cutting element 17. The edges of the cutting element 17 are rounded edges.

[0043] Figure 9 It shows that according to Figure 6 In one embodiment, a pipe 19 has two components 2 close to a pipe segment 1, the components 2 being arranged close to the outer surface of the pipe 19, thereby causing the web 7 to deflect in the direction of the outer surface 6 of the pipe segment 1.

[0044] Figure 7 The method for cutting according to Figure 1 and Figure 2 The tool for opening 3 in the embodiment of pipe segment 1, and Figure 6 Tool 14 is shown, which is used to, according to Figure 3 and Figure 4 An opening 3 is provided in pipe segment 1. Figure 8 The outer cutting element has a beveled surface 18 to form the bottom surface 11 of the second groove 9.

[0045] During the production of the insulated pipe section 1, several blanks with a semi-circular cross-section, made of mineral fibers and adhesives, are moved in a straight line into a machine with at least one rotatable drive tool 14, thereby cutting a first groove 8 and a second groove 9 in the blanks, so that the pipe section 1 can be produced continuously.

[0046] Figure Labels

[0047] 1 Pipe Section

[0048] 2 components

[0049] 3 Openings

[0050] 4 holes

[0051] 5. Plane of Symmetry

[0052] 6. Outer surface

[0053] 7. Web

[0054] 8 First Groove

[0055] 9 Second Groove

[0056] 10 Surface

[0057] 11 Bottom

[0058] 12 walls

[0059] 13 walls

[0060] 14 Tools

[0061] 15 Openings

[0062] 16 recess

[0063] 17 Cutting components

[0064] 18 sides

[0065] 19 tubes

[0066] Ww Web width

[0067] Ws Second groove width

[0068] DC First Groove Depth

[0069] ds Second groove depth

[0070] Wc First groove width

[0071] Wt Total opening width

Claims

1. An insulated piping system comprising a pipe (19) having an outer diameter and an insulated pipe segment mounted on the pipe (19), the pipe segment comprising two longitudinal members (2), each of the two longitudinal members (2) having a longitudinal opening (3) providing a bore for receiving the pipe (19), wherein, The two longitudinal components (2) face each other on a plane of symmetry (5), which is the plane in which the two longitudinal components (2) are connected to each other when the longitudinal components (2) are fixed to the tube (19). Its features are, Two webs (7) are provided in each longitudinal opening (3) of the longitudinal component (2) that provides a hole for receiving the tube (19), each web (7) extending substantially to the plane of symmetry (5) and arranged at an angle (α) between 45° and 90° relative to the plane of symmetry (5), including a first groove (8) between the webs (7) and a second groove (9) between the surfaces (10) of each web (7) and the longitudinal opening (3).

2. The piping system according to claim 1, Its features are, The longitudinal components (2) have the same shape.

3. The piping system according to claim 1, Its features are, The width (Wc) of the first groove (8) is greater than the width (Ws) of each second groove (9), wherein the width (Wc) of the first groove (8) is three times the width (Ws) of the second groove (9).

4. The piping system according to claim 1, Its features are, Each web plate (7) has a width (Ww) that is smaller than the width (Wc) of the first groove (8).

5. The piping system according to claim 1, Its features , The second groove (9) and the web (7) are symmetrically arranged in the longitudinal opening (3).

6. The piping system according to claim 1, Its features , The diameter of the longitudinal opening (3) is greater than the outer diameter of the tube (19).

7. The piping system according to claim 1, Its features are, The first groove (8) has a depth (dc) corresponding to at least half the outer diameter of the tube (19) and a width (Wc) smaller than the outer diameter of the tube (19), and the total width (Wt) between the outermost edge of the first of the two second grooves (9) and the outermost edge of the second of the two second grooves (9) is greater than the outer diameter of the tube (19).

8. The piping system according to claim 1, Its features , The width (Wc) of the first groove (8) is between 30% and 95% of the outer diameter of the tube (19).

9. An insulated pipe section comprising two longitudinal members (2), each longitudinal member (2) having a longitudinal opening (3) providing a hole for receiving a pipe (19), wherein the two longitudinal members (2) face each other in a plane of symmetry (5), said plane of symmetry (5) being the plane in which the two longitudinal members (2) are connected to each other when the longitudinal members (2) are fixed to the pipe (19). Its features , Two webs (7) are provided in each longitudinal opening (3) of the longitudinal component (2), the longitudinal opening (3) providing a hole for receiving the tube (19), each web (7) extending substantially to the plane of symmetry (5) and arranged at an angle (α) between 45° and 90° relative to the plane of symmetry (5), including a first groove (8) between the webs (7) and a second groove (9) between the surfaces (10) of each web (7) and the longitudinal opening (3), the longitudinal component (2) being made of mineral wool.

10. The heat-insulating pipe section according to claim 9, Its features are, The cross-section of the web (7) is rectangular.

11. The heat-insulating pipe section according to claim 9, Its features are, The cross-section of the second groove (9) is trapezoidal.

12. The heat-insulating pipe section according to claim 9, Its features are, The width (Wc) of the first groove (8) is greater than the width of each second groove (9), wherein the width (Wc) of the first groove (8) is three times the width (Ws) of the second groove (9).

13. The heat-insulating pipe section according to claim 9, Its features are, Each web plate (7) has a width (Ww) that is smaller than the width (Wc) of the first groove (8).

14. The heat-insulating pipe section according to claim 9, characterized in that, The second groove (9) and the web (7) are symmetrically arranged in the longitudinal opening (3).

15. A method for manufacturing an insulated pipe segment according to any one of claims 9 to 14, said insulated pipe segment comprising two longitudinal members (2), each longitudinal member (2) having a longitudinal opening (3) providing a hole for receiving a pipe (19), wherein the two longitudinal members (2) face each other in a plane of symmetry (5). Its features are, The first groove (8) between the two webs (7) and the second groove (9) between the surfaces (10) of each web (7) and the longitudinal opening (3) are cut into each longitudinal opening (3) of each longitudinal member (2) by means of a rotary-driven tool (14) that moves relative to the longitudinal member (2), thus forming two webs (7) that substantially extend to the plane of symmetry (5) and are arranged at an angle (α) between 45° and 90° relative to the plane of symmetry (5), the longitudinal member (2) being made of mineral wool.

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