KR20180129711A - An insulated pipe with an annular end cap and an elastic, non-metallic cladding element annular end cap - Google Patents

Abstract

The present invention relates to an insulation pipe (3) covered by a layer of at least one insulation part (4). A sheet metal cladding element (2) surrounds a pipe covered with an insulation part. At least one band (5) surrounds the cladding element (2). The elastic non-metallic annular end cap (1) having a rectangular cross section is positioned between the first sheet metal cladding element (2) and the pipe (3) covered by the insulation by the first end portion (9) and forms a sealing spacer. Additionally, the present invention relates to an elastic non-metallic cladding element annular end cap (1) having a rectangular cross section with 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.

Description

AN AN INSULATED PIPE WITH AN ANNULAR END CAP AND AN ELASTIC, NON-METALLIC CLADDING ELEMENT ANNULAR END CAP}

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

The end cap forms a spacer or gasket for cladding on a tubular system with a cladding.

Pipe or tube systems are frequently used in marine or offshore oil and gas facilities in the processing industry. The tube system includes a straight section, a tube bend, a T-joint, an elbow, a diameter reducer, a flange connection, a valve, and an attachment portion. Such systems often have to be insulated for a number of reasons, including reducing heat loss, providing an exterior surface with a safe temperature, reducing heat build-up in the cryogenic system, reducing transmission noise, improving fire resistance during fires, and the like. Many systems are also designed for possibly long life spans, possibly as long as 70 years, making it particularly important to prevent corrosion by preventing moisture from entering into the insulation from condensation or rainfall, for example. The insulation tends to accumulate moisture, thus increasing the risk of rust / corrosion of elements attached to the same tube, such as coated tubes or valves, flanges, attachment bracket diameter reducers, and the like. In addition, moisture can adversely affect the insulation properties, cause premature deterioration of the material, and cause unwanted organism growth.

Cladding elements for an insulation tube system of the type described above are typically installed using metal bands, self-tapping screws and / or pop rivets to align perforated holes to align perforated holes.

The development of new and more efficient insulation materials reduces insulation thickness requirements. Thus, insulation systems can have significantly less volume and difficulty with the potential to design systems with reduced weight and materials and low space consumption. Weight savings are particularly advantageous in floating installations. Examples of new and more efficient insulating materials include insulating materials derived from aerogels such as mats sold under the trade name Pyrogel XT-E. Pyrogel XT-E mats are typically less than 10 mm thick, because larger thicknesses make it difficult to mold into bends and shapes, and larger thicknesses are unnecessary in most situations.

It is therefore an object of the present invention to provide a cladding system comprising an end cap gasket and a spacer that allow the cladding to be installed without perforation using an anchor or self-tapping screws. Pop rivets or screws also have the potential to start leakage over time, even when a sealing compound is used, and the object of the present invention is to provide a system in which this additional risk is eliminated. The pop rivets and screws can also induce high stresses in the area of pop rivets or screws, especially in off-design conditions, and the object of the invention is potentially to cause leakage, and in extreme cases pop rivets or shear sheaves / High < / RTI > stresses that can cause delamination or tearing of the cladding material. Out-of-design conditions typically result from collisions with extraneous objects such as vehicles, cranes, and the like. Typical end caps for cladding include a sheet metal end cap, which typically requires time-consuming control and installation in the field, and there is a high risk of problems during installation resulting in leakage. In addition, installation requires a certain degree of proficiency, and there is a high risk of erroneous installation due to the large number of such factors in the plant. Therefore, there is a need to provide a solution that is quick and easy to install and low risk of erroneous installation.

It is common for sealing compounds to be used to form the joint seal and to provide a double safety device for sealing the joint.

It is also an object of the present invention to provide a cladding element that has sufficient integrity and rigidity to be self-supporting, and thus independent of the base structure, and thus does not expose the underlying structure to compression by contact with the insulation.

It is also an object of the present invention to provide a cladding element and an end cap gasket that are predictably mounted since the alignment of the two portions of the element's engagement line is assured by the bead.

The cladding element and the end cap of the present invention can be installed around the tube system without threading from the end to the tube. It is also an object of the present invention to provide a cladding element and an end cap gasket which can be designed to have a joint and a joining line for guiding the liquid from the top to the bottom of the cladding element without exuding inside the cladding element.

Thus, the present invention includes an insulation tube or piping system in which the tube is covered by at least one insulation layer at the top of the surface to be protected, including: A first sheet metal cladding element surrounding the tube covered with the end cap gasket and the insulation at the end of the cladding element. The sheet metal cladding element has a circular cross section, a circumference, a first end portion and a second end portion. At least one band surrounds the first sheet metal cladding element. The at least one longitudinal coupling line has a first edge and a second edge.

The at least one insulating layer may be 10 mm or less.

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

The invention also relates to a sheet metal cladding element having a substantially circular cross section, wherein the sheet metal cladding element forms a circumference.

The present invention relates to an insulation tube or piping system having a tube covered by at least one layer of insulation, wherein a first sheet metal cladding element surrounds the tube covered by said insulation, said sheet metal cladding element having a circular cross section, A circumference and a first end portion. At least one band surrounds the first sheet metal 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. The annular end cap is disposed at the first end portion between the first sheet metal cladding element and the tube covered with the insulation and forms a sealing spacer.

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

The rectangular cross section has a ratio between height D1-D2 of less than 6: 1 and thickness T1.

At least one band surrounding the first sheet metal cladding element also surrounds the end cap to retain the cladding element between the end cap and the band.

The front face of the end cap can extend past the edge of the cladding element.

The end cap may be made of a silicon material.

The end cap may comprise a vinyl group, a filler and a polydimethylsiloxane having a pigment.

The present invention also relates to an elastic non-metallic cladding element annular end cap. The end cap has a rectangular cross section with a thickness (T1) and height 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 rectangular cross section has a ratio between height D1-D2 of less than 6: 1 and thickness T1.

The rectangular cross-section may have a ratio between height (D1-D2) of less than 3: 1 and thickness (T1).

The end cap may be made of a silicon material.

The end cap may comprise a vinyl group, a filler and a polydimethylsiloxane having a pigment.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a steel tube or tubular body with the cladding and insulation system of the present invention.
Fig. 2 shows the present invention in a perspective view.
3 is a front view of the end cap gasket;
Figure 4 shows a perspective view of an end cap gasket provided around a tube with a cable extending along the tube.
5 is a perspective view of an end cap gasket having an outer diameter D1, an inner diameter D2 and a thickness T1.

Figure 1 is a detail and cross-section of a steel tube or tubular body 3 having a cladding 2, an insulation 4 and a sealing or end cap gasket 1 in the form of a flexible spacer of the invention. The tube (3) is insulated by a layer of insulating part (4). The insulating material may be a mat of Pyrogel XT-E. Pyrogel is a trade name for insulating materials composed of aerogels in fibers. The insulating material is held on the tube 3 with a tape. The condensation barrier foil 7 prevents condensate build up and surrounds the second insulation layer and induces moisture in the insulation material. An outer insulating layer is positioned between the straight outer cladding 2 of the 0.5 mm resistant stainless steel and the condensation barrier foil 7 held in place by the acid resistant stainless steel attachment band 5. The end cap gasket 1 seals around the tube 3 to prevent the inflow of water / liquid from the end of the cladding into the insulation 4 and forms a spacer between the tube 3 and the cladding 2 . A flange is located 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 attachment band 5. The flange is welded on the tube (1).

Each cladding element 2 has a substantially circular cross-section with the bead 6 along the circumference. The bead 6 is a stiffener that increases the stiffness of each cladding element 2 and forms a stop element to ensure that the joint with the neighboring element is correctly positioned. In addition, the beads ensure that the edges of the longitudinal bond lines are aligned with one another to ensure that the cladding element 2 keeps it in its intended shape. The beads 6 along the circumference of the two left cladding elements provide a suitable base for the metal band 5 holding the cladding elements together. In addition, the bead 6 ensures that the metal band 5 is correctly aligned and held in the intended position on the cladding element.

The cladding element 2 comprises a bond line to allow the cladding element 2 to be mounted on a tube on a conventional assembled tube system. The longitudinal beads may extend along the bond line.

The circumferential beads 6 of the cladding element 2 serve to provide a stop element for the neighboring cladding element and to maintain the shape of the cladding element 2 and to provide a guide for the overlapping area of the cladding element 2 Thereby preventing misalignment of the edges of the cladding element 2. The circumferential beads 6 are typically formed by a beading tool / bead roller or a crimping machine. Suitable sealing compounds can be applied to the overlapping regions. The circumferential bead also positions the steel band 5, ensuring that the band does not move away from the cladding element and that the band is perfectly aligned with the cladding without tilting. The inclined assembly of the band will potentially lead to insufficient tightening of the band.

The detail shown in circles A is the cross section of the detailed end cap gasket and 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 the stress on the cladding element (2).

The end cap gasket 1 is typically made of a silicone rubber having a rectangular cross section with a thickness T1 of 20 mm and maintaining its shape and periodic characteristics. The silicone rubber material of the end cap gasket 1 also forms a spacer or spacing member between the tubular body 3 and the cladding 2 while keeping the cladding 2 in shape and under the tension of the metal band 5 Is strong enough to prevent the cladding 2 from folding.

The bead 6 increases the strength and deformation resistance of the cladding element at the end and reduces the risk of dent formation at the end of the cladding element. The formation of the indentation of the end of the cladding element can lead to a leakage between the end cap gasket 1 and the cladding element 2. [

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

Figure 2 shows a perspective view of the invention in which the end cap gasket 1 surrounds the tube 3 and forms a spacer between the tube 3 and the cladding 2. The reinforcing beads 6 prevent the metal band 5 from slipping out of the cladding 2 and increase the stiffness of the cladding to prevent buckling of the cladding 2. The reinforcing bead 6 also provides a guide for the cladding 2 in the overlapping portion of the cladding 2 to ensure that the overlapping portion of the cladding is aligned. This is achieved as the bead on the upper side of the lower part of the overlapping part extends to the bead on the lower side of the upper part of the overlapping part.

3 shows an end cap gasket 1 in the form of a spacer with a front face 8, an inner face 12 towards the center of the end cap gasket 1 and an outer face 13 along the circumference of the end cap gasket 1. [ ). The cutout 10 provides space for the cable on the outside of the tube and the slit 11 allows the end cap gasket 1 to be installed on the tube without approaching the end.

Figure 4 shows an end cap gasket 1 installed around a tube 3 having a cable 14 extending along the tube 3. The special tape 15 holds the cable against the tube 3 and protects the cable 14. [ The radial slit 11 divides the end cap 1 and the cutout 10 allows the cable 14 to pass through the end cap gasket 1. The front face 8 of the end cap gasket 1 is oriented 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, and the diameter D1 depends on the diameter D2 of the tube to be covered and the diameter of the cladding or the thickness of the insulation portion. The thickness T1 of the end cap gasket 1 and hence the rigidity is such that the end cap gasket 1 acts as a spacer between the tube and the cladding and absorbs the mechanical pressure from the cladding onto the end cap gasket without any additional elements Sufficient to make it possible is necessary. The end cap gasket should also be flexible enough to allow the gasket to be opened and tubular. In other words, the slit must be openable in an amount corresponding to at least D2 so that the gasket can be installed on the tube.

End cap gaskets shall be provided for the fire resistance requirements of FAR 25 / JAR 25 / CS 25, Appendix F, del 1, (1) (iv) og (a) (1) (v) horizontal fire tests and Automotive Standard PART 571FMVSS302 Should be met. The relative density of the end cap material is typically between 1.2 and 1.3 g / cm < 3 >. The end cap gasket may comprise a polydimethylsiloxane having vinyl groups, fillers and pigments. The end cap gasket may consist of solid silicon with a temperature limit of -60 to 270 ° C and intermittently up to 300 ° C.

Typical end cap gasket characteristics are:

Technical characteristics

Mechanical properties:

In the above description, the band 5 has been described as a metal band. These bands are well known in the art and are fastened by well known fastening tools and locked in positions that are tightened with metal buckles. However, other types of band, band material buckles and tightening mechanisms can be used without departing from the invention.

Claims (14)

A tube (3) covered by a layer of at least one insulation (4), wherein a first sheet metal cladding element (2) surrounds the tube (3) covered by said insulation and the sheet metal cladding element (2) Having a circular cross section, a circumference and a first end portion (9);
At least one band (5) surrounding the first sheet metal cladding element (2);
An elastic non-metallic annular end cap (1) comprising at least one slit (11) extending inwardly from the outside of an annular end cap and having a rectangular cross section with a thickness (T1) and a height (D1-D2) Shaped annular end cap (1), wherein the annular end cap
The annular end cap 1 being disposed between the first sheet metal cladding element 2 at the first end portion 9 and the tube 3 covered by the insulation and forming a sealing spacer. The insulation tube according to claim 1, wherein the layer of the at least one insulation part (3) is 10 mm or less. The insulation tube according to claim 1, wherein the layer of the at least one insulation part (3) is 5 mm or less. The insulated tube of claim 1, wherein the rectangular cross-section has a ratio between a height (D1-D2) of less than 6: 1 and a thickness (T1). 5. The insulation tube of claim 4, wherein the rectangular cross-section has a ratio between a height (D1-D2) of less than 3: 1 and a thickness (T1). 3. A method as claimed in claim 1, characterized in that at least one band (5) surrounding the first sheet metal cladding element (2) also surrounds the end cap (1) to provide a cladding element between the end cap (1) and the band Holding, insulated pipe. The insulation tube 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 insulation tube according to claim 1, wherein the end cap is made of a silicon material. The insulation tube of claim 1, wherein the end cap comprises a polydimethylsiloxane having vinyl groups, fillers and pigments. CLAIMS 1. An elastic nonmetallic cladding element annular end cap for forming a spacer between an insulated tube (3) and a cladding element (2), the annular end cap comprising a rectangular cross section having a thickness (T1) of at least 15 mm and a height, (1) having at least one slit (11) extending into the interior of the cap. 11. An elastomeric non-metallic cladding element annular end cap (1) according to claim 10, wherein the rectangular cross-section has a ratio between a height (D1-D2) of less than 6: 1 and a thickness (T1). 11. The elastic non-metallic cladding element annular end cap (1) according to claim 10, wherein the rectangular cross-section has a ratio between a height (D1-D2) of less than 3: 1 and a thickness (T1). 13. An elastic base clad element annular end cap (1) according to any one of claims 10 to 12, wherein the end cap is made of a silicone material. 13. An elastomeric non-metallic cladding element annular end cap (1) according to any one of claims 10 to 12, wherein the end cap comprises a polydimethylsiloxane having vinyl groups, fillers and pigments.

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