JP2019518187A - Thermal insulation pipe or piping system with annular end cap and elastic non-metallic cladding element annular end cap - Google Patents

Abstract

The invention relates to an insulation pipe (3) covered by at least one layer of insulation (4). A metal plate cladding element (2) encloses the tube covered with insulation. At least one band (5) surrounds the cladding element (2). An elastic non-metallic annular end cap (1) having a rectangular cross-section is arranged in the vicinity of the first end (9) and, in the vicinity of the first end, the tube (3) and the Form a sealing spacer between the metal sheet cladding element (1) and the metal sheet cladding element (2). Furthermore, the invention provides an elastic non-metallic cladding element annular having a rectangular cross section having a thickness T1 of at least 15 mm and at least one slit (11) extending from the outside of the annular end cap to the inside of the annular end cap. The end cap (1).

Description

  The present invention relates to an insulated pipe or piping system having an annular end cap and an elastic non-metallic cladding element annular end cap.

  The end caps form gaskets and spacers for cladding in pipe systems with cladding.

  Pipes and pipe systems are commonly used in processing industries, such as offshore and onshore oil and gas facilities. The tube system includes straight sections, tube bends, T-joints, elbows, diameter reducers, flange connections, valves, fittings, and the like. Such systems are often reduced in heat loss, to achieve a safe temperature on the outer surface, to reduce heat buildup in low temperature systems, to reduce transmitted noise, to improve fire resistance in the event of fire, etc. It must be insulated for any reason. Also, because many systems are designed for longevity, perhaps up to 70 years or more, it is particularly important to prevent corrosion, for example by preventing moisture from entering the insulation due to condensation or precipitation. .

  Because the insulation tends to store moisture, it increases the risk of rust / corrosion of covered tubes, or elements attached to tubes, such as valves, flanges, mounting brackets, diameter reducers, etc. Moisture can also adversely affect the thermal insulation properties, can lead to premature deterioration of the material, and can also lead to the growth of unwanted microorganisms.

  Cladding elements for insulated pipe systems of the type described above are typically installed using pop rivets and / or self-tapping screws or metal bands to align the drill holes.

  DE 202 180 97 describes a tube channel of a tube with a tube insulation stand in the mantle, which has a closure as an end disc. The disc is separated from the tube surface by a closed contour of elastic material. The tube passes through the disc opening.

  Developing new and more efficient thermal insulation materials reduces thermal insulation thickness requirements. Thus, the thermal insulation system can be designed to be less bulky, light and easy to handle, reduce materials, and save more space. Weight reduction is particularly effective for floating installation. Examples of new and more efficient thermal insulation materials include thermal insulation materials obtained from airgels such as mats sold under the trade name Pyrogel XT-E. Pyrogel XT-E is typically less than 10 mm thick, as it is difficult to bend and shape at thicknesses greater than that, and thicknesses greater than that are not necessary in most situations It is because.

DE 20218097

  Accordingly, it is an object of the present invention to provide a cladding system that can be installed without drilling with an awl or self tapping screw, including end cap gaskets and spacers. Also, pop rivets and screws have the potential to begin to leak over time, even when using sealing compounds, and the object of the present invention is to provide a system where this additional risk has disappeared. Also, pop rivets and screws may induce large stresses in the area of the pop rivet or screw, especially during out-of-design situations, and the object of the present invention is that it can cause leakage and in extreme cases Is to eliminate such large stresses that can potentially cause tearing of the cladding material or shear / rupture of pop rivets or screws. An undesigned situation can typically occur due to a collision with an external object such as a vehicle, crane or the like. Conventional end caps for cladding include sheet metal end caps that typically require time-consuming in-situ adjustments and installation, and are at high risk with regard to installation problems that cause leakage. The installation also requires a certain level of skill, and there are a large number of such elements in the factory equipment, so the risk of installation failure is high. Therefore, it is necessary to provide a solution that is easy and quick to install and has a low risk of installation failure.

  Sealing compounds are commonly used to form joint seals and to provide redundancy in joint sealing.

  It is also an object of the present invention to provide a cladding element having sufficient integrity and stiffness to be self-supporting. Thus, the cladding element is independent of the basic structure and does not contact the basic structure and exert pressure on the insulation.

  It is also an object of the present invention to provide a cladding element and an end cap gasket which is installed as expected since the alignment of the two parts of the element seam is ensured by the bead.

  The cladding element and end cap of the present invention can be installed around the pipe system without screwing onto the pipe from the end. It is also for the purpose of the present invention to provide a cladding element and an end cap gasket which can be designed with joints and joints which lead liquid from the top to the bottom of the cladding element without immersing inside the cladding element. is there.

  Thus, the present invention comprises an insulated pipe or pipe system having a pipe covered by at least one layer of insulation on a surface to be protected. A first metal sheet cladding element surrounds the insulation covered tube and an end cap gasket at the end of the cladding element. The metal plate cladding element has a circular cross section, a perimeter, a first end and a second end. At least one band surrounds the first metal sheet cladding element. At least one longitudinal seam has a first edge and a second edge.

  The at least one layer of the thermal insulator may be 10 mm or less.

  The at least one layer of insulation may be 5 mm or less.

  Furthermore, the invention relates to a metal plate cladding element having a substantially circular cross section, wherein the metal plate cladding element defines an outer periphery.

  The invention relates to an insulated pipe or pipe system comprising a pipe covered by at least one layer of thermal insulation, wherein a first metal plate cladding element surrounds the pipe covered with said insulation, said metal sheet The cladding element has a circular cross section, an outer periphery and a first end. At least one band surrounds the first metal sheet cladding element. An elastic non-metallic annular end cap having a rectangular cross-section has a thickness T1 of at least 15 mm and at least one slit extending from the outside of the annular end cap to the inside of the annular end cap. An annular end cap is disposed at the first end and forms, at the first end, a sealing spacer between the heat pipe covered tube and the first metal plate cladding element.

  The bead may extend along the perimeter of the sheet metal cladding element surrounding the first end.

  The ratio of the height (D1-D2) of the rectangular cross section to the thickness T1 is less than 6: 1.

  At least one band surrounding the first sheet metal cladding element may surround the end cap and hold the cladding element between the end cap and the band.

  The front face of the end cap may extend beyond the edge of the cladding element.

  The end cap may be made of silicone material.

  The end caps may be made of vinyl group-containing polydimethylsiloxanes, fillers and dyes.

  Furthermore, the invention relates to an elastic non-metallic cladding element annular end cap. The end cap has a rectangular cross-section having a constant height and a thickness T1 of at least 15 mm, and at least one slit extending from the outside of the annular end cap to the inside of the annular end cap.

  The ratio of the height (D1-D2) of the rectangular cross section to the thickness T1 is less than 6: 1.

  The ratio of height (D1-D2) to thickness T1 of the rectangular cross section may be less than 3: 1.

  The end cap may be made of silicone material.

  The end caps may be made of vinyl group-containing polydimethylsiloxanes, fillers and dyes.

1 shows a steel pipe or tube having a cladding and insulation system of the present invention. The invention is shown in a perspective view. It is a front view of an end cap gasket. Figure 17 shows in perspective view an end cap gasket installed around the tube with a cable extending along the tube. FIG. 5 is a perspective view of an end cap gasket having an outer diameter D1, an inner diameter D2 and a thickness T1.

  FIG. 1 is a cross-sectional view and a detailed view of a cladding 2, an insulation 4 and a steel pipe or tube 3 with an end cap gasket 1 in the form of a seal, ie a flexible spacer according to the invention. The tube 3 is thermally insulated by a plurality of layers of thermal insulation 4. The insulation material may be a Pyrogel XT-E mat. Pyrogel is a trademark of thermal insulation material made of airgel-containing fibers. The thermal insulation material is held on the tube 3 by a tape. The anti-condensation foil 7 surrounds the second insulation layer to prevent the formation of condensation and to generate moisture in the insulation material. An outer thermal insulating layer is disposed between the anti-condensing foil 7 and a straight outer cladding 2 of 0.5 mm acid resistant stainless steel held in place by the acid resistant stainless steel mounting band 5. The end cap gasket 1 seals around the circumference of the tube 3 to prevent water / liquid from entering the insulation 4 from the end of the cladding and a spacer between the cladding 2 and the tube 3 Form A flange is arranged at the end of the tube 3.

  The acid resistant stainless steel outer cladding 2 is held in place by an acid resistant stainless steel mounting band 5. The flange is welded to the tube 1.

  Each cladding element 2 has a substantially circular cross-section and has beads 6 along the periphery. The beads 6 are reinforcements which increase the rigidity of each cladding element 2 and form stop elements to ensure that the joints with adjacent elements are correctly positioned. Also, the beads are positively aligned with the longitudinal seam edges to ensure that the cladding element 2 maintains it in its intended shape. The bead 6 along the outer circumference of the two cladding elements in that state provides a suitable mounting position for the metal band 5 holding the cladding elements together. Also, the bead 6 ensures that the metal band 5 is correctly aligned and remains in the intended position on the cladding element.

  The cladding element 2 comprises a seam which makes it possible to install the cladding element 2 over the pipes of an existing assembled pipe system. Longitudinal beads may extend along the seams.

  The circumferential bead 6 of the cladding element 2 provides a stop element for the adjacent cladding element, which maintains the shape of the cladding element 2 and provides a guide for the overlapping area of the cladding element 2 It works to prevent misalignment of the edge of the cladding element 2. The circumferential bead 6 is typically formed by a beading tool / bead roller or crimping machine. A suitable sealing compound can be applied to the overlap area. The circumferential bead also serves to locate the steel band 5 so that the band does not move away from the cladding element and the band is placed in perfect alignment with the cladding without tilting. It will be sure to be done. Tilting and assembling the band may result in insufficient tightening of the band.

  The circle with the detail A is a cross section of the detail of the end cap gasket and the spacer 1. The front face 8 of the gasket 1 extends beyond the front face or edge 9 of the cladding element 2. The metal band 5 extends somewhat over the end cap gasket 1 to reduce stress on the cladding element 2.

  The end cap gasket 1 is made of silicone rubber having a rectangular cross section with a thickness T1 that is typically 20 mm and maintaining its shape and properties over time. Also, the silicone rubber material of the end cap gasket 1 is sufficiently rigid to maintain the shape of the cladding 2 in a predetermined shape and to form a spacer or distance piece between the cladding 2 and the tube 3 Have. The end cap gasket 1 prevents the cladding 2 from collapsing under pressure from the metal band 5.

  The bead 6 enhances the strength and deformation resistance at the end of the cladding element and reduces the risk of the end of the cladding element being dented. When the end of the cladding element is dented, a leak may occur between the cladding element 2 and the end cap gasket 1.

  A radial slit can be cut into the end cap gasket to slide the gasket 1 onto the tube 3 without any contact with the end of the tube. A sealing compound, such as the sealing compound of the trade name Nitoseal SC30, can be used to seal the slit and the transition between the end cap gasket 1, the cladding 2 and the tube 3.

  FIG. 2 shows the invention in a perspective view, in which the end cap gasket 1 encloses the tube 3 and forms a spacer between the tube 3 and the cladding 2. The reinforcing bead 6 prevents the metal band 5 from sliding off the cladding 2 and enhances the rigidity of the cladding to prevent buckling of the cladding 2. Also, in order to ensure alignment of the overlap of the cladding 2, a guide for the cladding 2 is provided at the overlap of the cladding 2 by means of reinforcing beads 6. This is achieved when the bead on the upper surface of the lower portion of the overlap extends into the bead on the lower surface of the upper portion of the overlap.

  FIG. 3 shows an end cap gasket 1 in the form of a spacer having a front face 8, an inner surface 12 facing towards the center of the end cap gasket 1 and an outer surface 13 along the periphery of the end cap gasket 1. The notch 10 provides space for the cable outside the tube and the slit 11 allows the end cap gasket 1 to be placed on the tube without contacting the end.

  FIG. 4 shows the end cap gasket 1 installed around the tube 3 with the cable 14 extending along the tube 3. The special tape 15 holds the cable to the tube 3 and protects the cable 14. The radial slit 11 breaks the end cap 1 and the notch 10 allows the cable 14 to pass through the end cap gasket 1. The front face 8 of the end cap gasket 1 points upward.

  FIG. 5 shows an end cap gasket 1 having an outer diameter D1, an inner diameter D2 and a thickness T1. The thickness T1 is typically 19 mm. The diameter D2 depends on the diameter of the tube to be covered, the diameter D1 on the diameter D2 of the tube to be covered and the thickness of the insulation or the diameter of the cladding. The thickness T1 and thus the stiffness of the end cap gasket 1 is such that the end cap gasket 1 acts as a spacer between the tube and the cladding and from the cladding for the end cap gasket without any additional elements It is essential that it be sufficient to make it possible to absorb the mechanical pressure of the Also, the end cap gasket must have sufficient flexibility to allow the gasket to be opened and installed on the tube. In other words, the slits must allow the gasket to be opened at least by an amount corresponding to D2 in order to allow the gasket to be installed on the tube.

  End cap gaskets are FAR 25 / JAR 25 / CS 25, Appendix F Part 1 (a) (1) (1) (iv) and (a) (1) (v) Horizontal Fire Test and Fire Standard Part 571 FMVSS 302 Fire Should meet the requirements. The relative density of the end cap material is typically 1.2 to 1.3 g / cm3. The end cap gasket may be made of vinyl group-containing polydimethylsiloxane, filler and dye. The end cap gasket may be made of solid silicone, having a temperature limit of -60 to 270 ° C, discontinuous up to 300 ° C.

機械的特性:

The properties of a typical end cap gasket are listed below.
Technical characteristics:

Mechanical properties:

  In the above specification, band 5 is described as a metal band. Such bands are well known in the art and can be tightened with a known tightening tool and locked in place by a metal buckle. However, other types of bands, band material buckles and clamping mechanisms may be used without departing from the invention.

Claims (15)

Insulated pipe or pipe with insulated pipe (3) covered by at least one layer of insulation (4)
A first metal sheet cladding element (2) encloses the tube (3) covered with the thermal insulation, said metal sheet cladding element (2) having a circular cross section, an outer circumference and a first end (9) With);
At least one band (5) surrounds the first metal sheet cladding element (2);
An elastic non-metallic annular end cap (1) has a rectangular cross-section having a height (D1-D2) and a thickness T1 of at least 15 mm, and at least extending from the outside of the annular end cap to the inside of the annular end cap Characterized by having one slit (11),
A tube (3) and the first metal plate cladding element (2), wherein the annular end cap (1) is arranged in the vicinity of the first end (9) and covered with the heat insulator Form a sealing spacer between
Insulated pipe or insulated piping system.   The insulated pipe or pipe system according to claim 1, further comprising a bead (6) along the outer periphery of the metal sheet cladding element (2) surrounding the first end (9).   The insulated pipe or insulated piping system according to claim 1, wherein at least one layer of the thermal insulator (3) is 10 mm or less.   The insulated pipe or insulated piping system according to claim 1, wherein at least one layer of the thermal insulator (3) is 5 mm or less.   The insulated pipe or pipe system according to claim 1, wherein the rectangular cross section has a height (D1-D2) to thickness T1 ratio of less than 6: 1.   The insulated pipe or pipe system according to claim 5, wherein the rectangular cross section has a height (D1-D2) to thickness T1 ratio of less than 3: 1.   The at least one band (5) surrounding the first metal sheet cladding element (2) also encloses the end cap (1), whereby the end cap (1) and the band (2) The insulated pipe or pipe system according to claim 1, wherein the cladding element is held between them.   The insulated pipe or insulated piping system according to claim 1, wherein the front face (8) of the end cap (1) extends beyond the edge (9) of the cladding element (2).   The insulated pipe or pipe system according to claim 1, wherein the end cap is made of a silicone material.   The insulated pipe or pipe system according to claim 1, wherein the end cap is made of a vinyl group-containing polydimethylsiloxane, a filler and a pigment.   An elastic non-metallic cladding element annular end cap (1) for forming a spacer between a thermal insulation tube (3) and a cladding element (2), having a height (D1-D2) and at least 15 mm Elastic non-metallic cladding element annular end cap (1) having a rectangular cross section having a thickness T1 and at least one slit (11) extending from the outside of the annular end cap to the inside of the annular end cap .   Elastic non-metallic cladding element annular end cap (1) according to claim 11, wherein the rectangular cross-section has a ratio of height (D1-D2) to thickness T1 of less than 6: 1.   Elastic non-metallic cladding element annular end cap (1) according to claim 11, wherein the rectangular cross-section has a ratio of height (D1-D2) to thickness T1 of less than 3: 1.   An elastic non-metallic cladding element annular end cap (1) according to any one of the claims 11-13, made of silicone material.   An elastic non-metallic cladding element annular end cap (1) according to any one of claims 11 to 13, made of vinyl group-containing polydimethylsiloxane, fillers and dyes.

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