RU2597733C2 - Floating pipeline - Google Patents

Abstract

FIELD: pipes.

SUBSTANCE: invention relates to pipeline equipment and can be used for transfer of homogeneous fluids, hydraulic mixtures, wastes from oil refining and pulp on dredges in sea, river and marshy environment. Floating pipeline comprises one or more floats, formed by outer surface of elastic pipe 1 and barrel-shaped polymer shell 2. Floats are filled with foamed polymer material 3, and/or gas and/or granulated polymer, wherein float is filled in upper part of foamed polymer material by 10-50 times lower density compared to lower part of float. Furthermore, polymer shell 2 has a barrel shape, reinforced with flexible material 4, and on outer surface of polymer shell 2 there are lugs 5 for attachment of electric cable 6.

EFFECT: technical result is simplification of design, higher reliability and improved operational characteristics of floating pipeline.

4 cl, 4 dwg

Description

The invention relates to pipeline equipment and can be used for transporting hydraulic mixtures, homogeneous liquids, oil and oil products, oil refinery waste, pulp dredgers in the marine, river and marshy environment.

A floating pipeline is known (see patent RU No. 2331007, IPC - F16L, 1/12 publ. 08/10/2002, bull. No. 22), including cylindrical floats made in the form of several layers of material wound on a pipe, and the outer shell in the form of one or more layers of material, while the surfaces of the layers of material are interconnected.

A disadvantage of the known floating pipeline is the low strength of the layers of material wound on the pipe, as well as the lack of reliable fixation of the float on the pipeline allows you to move the floats on the pipeline and in general their descent from the pipeline into the water and partial or complete flooding of the pipeline, thereby reducing its performance and durability .

The closest in the set of essential features and the technical result achieved - the prototype - is a floating pipeline (see patent RU No. 2176048, IPC - F16L, 1/12 publ. November 20, 2001), including elastic cylindrical shells placed one into another, space between which it is divided into sealed cavities, the sealed cavities being made separately and placed on the inner cylindrical shell during the assembly process.

A disadvantage of the known pipeline prototype is the complexity of manufacturing two shells, as well as damage to the sealed cavities, violation of the fastening elements of the floats during operation.

The technical task is to eliminate these shortcomings, the technical result of which will be simplification of the design, increasing reliability and improving the operational characteristics of the floating pipeline.

The specified technical result is achieved due to the fact that the floating pipeline containing the elastic pipe and one or more floats located on it differs in that the floats are formed by the outer surface of the elastic pipe and the polymer shell and are filled with foam materials, and / or gases, and / or granular polymers, and in the upper part half the volume of the entire float, the foam material has 10-50 times lower density compared to the lower part.

The polymer shell has a barrel-shaped shape, reinforced with a flexible material, and on the outer surface of the polymer shell there are eyes for attaching the electric cable, pipelines and signal equipment.

Depending on the diameter of the elastic pipe, the floats are mounted on an elastic pipe with an offset of 5-40%, in the range of standardized pipes from 102 to 630 mm the eccentricity is determined by the formula

, где $$e=\frac{D-d}{k}$$

where

D is the outer diameter of the float;

d is the outer diameter of the pipeline;

k is a coefficient equal to 3-4.

The use of this design of barrel-shaped floats with a displacement expands the operational capabilities of a floating pipeline, providing it with the necessary buoyancy on a water surface or in a completely submerged state when exposed to wind, waves and movement of floating structures.

To ensure stability in the aquatic environment, the floats are barrel-shaped and are filled with foam material, and / or gases, and / or a granular polymer in the upper part of the half volume of the entire float, 10-50 times lower density compared to the lower part, and depending on the conditions In operation, floats are centered on the elastic pipe or offset, as well as in various combinations of floats on the elastic pipe, for example, one in the center and the next with offset.

The polymer shell of the float is reinforced with a more durable flexible material compared to the layers of the well-known analogue - polyethylene foam, polyurethane foam, which allows the invention to be used in various aggressive environments, for example, when pumping petroleum waste.

Directly, on the outer surface of the polymer shell of the float, there are eyes for attaching an electric cable, signal equipment, which greatly simplifies the design, while in the known invention (see patent RU No. 2384785, IPC - F16L, 1/12) there are additional compensators for longitudinal movement, longitudinal movement limiters, side and upper eyes, supporting racks and means for attaching service lines.

The invention is illustrated by drawings:

FIG. 1 is a sectional view of a float with an elastic pipe;

FIG. 2 - general view of a floating pipeline;

FIG. 3 is a general view of a float with an offset on an elastic pipe;

FIG. 4 is a cross-sectional view of a floating pipeline.

The floating pipeline (Fig. 1) contains an elastic pipe 1 on which one or more floats are installed (Fig. 2), formed by the outer surface of the elastic pipe 1 and the barrel-shaped polymer shell 2, filled with foam polymer material 3, and / or gases, and / or granular polymer, (Fig. 1), while the float is filled in the upper half of the entire float with foam material 10-50 times lower density compared to the lower part of the float, and depending on the diameter of the elastic pipe 1, the floats are installed a flexible tube 1 with an offset of 5-40% (Figs. 3, 4), shell polymer 2 is reinforced flexible material 4 (FIG. 1).

On the outer surface of the polymer shell 2 there are eyes 5 in which the electric cables 6 are attached (Fig. 3).

Using the proposed invention will expand the operational capabilities of a floating pipeline.

Claims (4)

1. A floating pipeline containing an elastic pipe and one or more floats located on it, characterized in that the floats are formed by the outer surface of the elastic pipe and a polymer shell and are filled with foam materials and / or gases and / or granular polymers, the float being filled the upper part of the half of the entire float with foam materials 10-50 times lower density compared with the lower part of the float. 2. The floating pipeline according to claim 1, characterized in that the polymer shell of the float has a barrel-shaped shape reinforced with a flexible material. 3. The floating pipeline according to claim 1, characterized in that on the outer surface of the polymer shell are eyes for attaching an electric cable, pipelines and signal equipment. 4. The floating pipeline according to claim 1, characterized in that, depending on the diameter of the elastic pipe, the floats are mounted on the elastic pipe with a displacement of the axis of the float relative to the axis of the elastic pipe by 5-40%.

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