High-temperature-resistant supporting ring for seabed aerogel heat preservation pipe

Abstract

The utility model discloses a high-temperature-resistant support ring for a seabed aerogel thermal insulation pipe, which comprises a pair of support ring single bodies arranged in mirror symmetry, and each support ring single body comprises an arc-shaped thermal insulation plate and an arc-shaped sheath arranged on the outer wall of the thermal insulation plate; a plurality of sliding strips are uniformly distributed on the outer wall of the sheath along the circumference; the insulation board, the sheath and the inner pipe are fixedly connected through a bolt group; a heat preservation strip is arranged in a gap between the longitudinal end faces of the pair of supporting ring single bodies, and the heat preservation strip is tightly attached to the longitudinal end faces of the two supporting ring single bodies. According to the submarine thermal insulation pipe, the long-term tolerable temperature can reach 260 DEG C, and the service temperature of the submarine thermal insulation pipe can be increased; extra anti-slipping force can be provided for the aerogel heat preservation layer, and it is guaranteed that the heat preservation layer and the inner pipe do not displace and slip when the heat preservation pipe is assembled and welded and laid on the sea.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline support rings, and in particular relates to a high-temperature resistant support ring for a submarine aerogel insulation pipe. Background Art

[0002] At present, submarine insulation pipes are usually steel-jacketed steel insulation pipes, and the insulation layer is usually of low strength. In order to prevent the insulation layer from being damaged by the pressure of the inner pipe, a support device needs to be installed on the inner pipe to support the inner pipe. When polyurethane foam is used as the insulation layer, the temperature of the medium transported by the insulation pipe is lower than 120°C, and wooden blocks can be tied to the inner pipe for support. With the development of deep-sea oil and gas, the oil and gas production temperature can reach 150°C or even higher. Therefore, high-temperature resistant insulation pipes with aerogel composite materials as insulation layers have emerged. Due to the increase in service temperature, the wood blocks are severely aged and it is difficult to ensure the support reliability of the entire life cycle of the sea pipe. Therefore, wooden blocks are no longer applicable as support devices. Moreover, since the aerogel composite material is formed by multiple layers of coating on the inner pipe to form an insulation layer, the anti-slip force between the insulation layer and the inner pipe is low, and it is difficult for the tied wooden blocks to provide sufficient anti-slip force. There is a risk of slippage of the insulation layer during the assembly of the insulation pipe and the offshore welding and laying. Utility Model Content

[0003] The utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide a high temperature resistant supporting ring for a submarine aerogel insulation pipe.

[0004] The utility model is realized by the following technical solutions:

[0005] A high temperature resistant supporting ring for a submarine aerogel insulation pipe comprises a pair of supporting ring monomers arranged in mirror symmetry, the supporting ring monomers comprising an arcuate insulation board and an arcuate sheath arranged on the outer wall of the insulation board; a plurality of sliding strips are evenly distributed on the outer wall of the sheath along the circumference; the insulation board, the sheath and the inner pipe are fixedly connected by a bolt group; an insulation strip is arranged in the gap between the longitudinal end faces of the pair of supporting ring monomers, and the insulation strip is closely attached to the longitudinal end faces of the two supporting ring monomers.

[0006] In the above technical solution, a pair of the supporting ring monomers and the two insulation strips form a sleeve structure.

[0007] In the above technical solution, the bolt group mounting holes and the slide bar mounting holes are evenly distributed on the sleeve.

[0008] In the above technical solution, the bolt group includes a screw rod, a nut and a gasket.

[0009] In the above technical solution, the slide bar is arranged parallel to the axis of the sheath.

[0010] In the above technical solution, the slide bar and the sheath are fixedly connected by at least one flat head screw, and the flat head screw lies in the slide bar.

[0011] In the above technical solution, the length of the sliding bar is the same as the length of the sheath.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides a high-temperature resistant supporting ring for submarine aerogel insulation pipes. Compared with the maximum service temperature of wooden blocks of traditional supporting devices of only 120°C, the supporting ring of the utility model can withstand temperatures as high as 260°C for a long time, which can increase the service temperature of submarine insulation pipes; and the supporting ring can be tightly installed on the inner pipe, which can provide additional anti-slip force for the aerogel insulation layer, ensuring that the insulation layer and the inner pipe do not displace and slip when the insulation pipe is assembled and welded and laid at sea. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the installation structure of the utility model.

[0016] in:

[0017] 1. Insulation board; 2. Sheath; 3. Bolt group; 4. Slide bar; 5. Flat head screw; 6. Insulation strip; 7. Inner tube.

[0018] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0020] like Figure 1 As shown, a high temperature resistant supporting ring for a submarine aerogel insulation pipe comprises a pair of supporting ring monomers arranged in mirror symmetry, the supporting ring monomers comprising an arcuate insulation board 1 and an arcuate sheath 2 arranged on the outer wall of the insulation board 1; a plurality of sliding strips 4 are evenly distributed along the circumference of the outer wall of the sheath 2; the insulation board 1, the sheath 2 and the inner tube 7 are fixedly connected by a bolt group 3; an insulation strip 6 is arranged in the gap between the longitudinal end faces of a pair of supporting ring monomers, and the insulation strip 6 is close to the longitudinal end faces of the two supporting ring monomers.

[0021] A pair of supporting ring monomers and two insulation strips 6 form a sleeve structure.

[0022] The insulation board 1 is made of a high temperature resistant and heat-insulating inorganic material. The compressive strength can be adjusted within the range of 0.3Mpa to 15Mpa as required. The material is preferably calcium silicate. The length of the insulation board 1 is preferably 100mm to 200mm.

[0023] The sheath 2 is a sleeve structure, which protects the insulation board 1. The material of the sheath 2 is the same as that of the insulation board 1, preferably carbon steel;

[0024] The sleeve 2 is evenly distributed with bolt group mounting holes and slide bar mounting holes.

[0025] The bolt group 3 plays a role in tightening the support ring when it is installed on the pipeline. The bolt group (3) includes a screw, a nut, a butterfly washer or a spring washer, and each component of the bolt group is galvanized for corrosion protection.

[0026] The slide bar 4 is arranged parallel to the axis of the sheath 2 .

[0027] The slide bar 4 and the sheath 2 are fixedly connected by at least one flat head screw 5 . The flat head screw 5 lies inside the slide bar 4 and should not protrude from the surface of the slide bar 4 .

[0028] The slide bar 4 serves to avoid direct contact between the sheath 2 and the outer tube and reduce friction. The slide bar 4 has the same length as the sheath 2. Both ends of the slide bar 4 can be grooved. The slide bar 4 is made of a high-temperature resistant organic polymer material, preferably a glass fiber reinforced Teflon composite material. A mounting hole is reserved on the slide bar 4.

[0029] The insulation strip 6 is made of a high temperature resistant insulation material, preferably a silicon dioxide aerogel composite material.

[0030] Installation method of the utility model:

[0031] like Figure 2 As shown, when in use, the insulation board 1, the sheath 2, the slide bar 4, and the flat head screw 5 should be assembled first, and then the assembled upper and lower support ring monomers should be placed on the inner tube 7 where the support ring needs to be installed, and then the bolt group 3 is installed in the bolt holes on both sides of the support ring. The support ring is fixedly installed by tightening the bolt group 3. After fixed installation, the gap between the two insulation boards 1 can be filled by the insulation strip 6.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0034] The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. A high temperature resistant support ring for submarine aerogel insulation pipe, characterized in that: The invention comprises a pair of support ring monomers arranged in mirror symmetry, wherein the support ring monomers comprise an arc-shaped heat-insulating plate (1) and an arc-shaped protective sleeve (2) arranged on the outer wall of the heat-insulating plate (1); a plurality of sliding strips (4) are evenly distributed along the circumference of the outer wall of the protective sleeve (2); the heat-insulating plate (1), the protective sleeve (2) and the inner tube (7) are fixedly connected by a bolt group (3); a heat-insulating strip (6) is arranged in the gap between the longitudinal end faces of the pair of support ring monomers, and the heat-insulating strip (6) is closely attached to the longitudinal end faces of the two support ring monomers.

2. The high temperature resistant support ring for submarine aerogel insulation pipe according to claim 1 is characterized in that: A pair of supporting ring monomers and two heat-insulating strips (6) form a sleeve structure.

3. The high temperature resistant support ring for submarine aerogel insulation pipe according to claim 1 is characterized in that: The sleeve (2) is evenly distributed with bolt group mounting holes and slide bar mounting holes.

4. The high temperature resistant support ring for submarine aerogel insulation pipe according to claim 1 is characterized in that: The bolt group (3) comprises a screw rod, a nut and a washer.

5. The high temperature resistant support ring for submarine aerogel insulation pipe according to claim 1 is characterized in that: The slide bar (4) is arranged parallel to the axis of the sheath (2).

6. The high temperature resistant support ring for submarine aerogel insulation pipe according to claim 1, characterized in that: The slide bar (4) and the sheath (2) are fixedly connected via at least one flat head screw (5), and the flat head screw (5) lies in the slide bar (4).

7. The high temperature resistant support ring for submarine aerogel insulation pipe according to claim 1 is characterized in that: The length of the slide bar (4) is the same as the length of the sheath (2).

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