Float for floating flexible pipes

Details Float for floating flexible pipes Float for floating flexible pipes

1996-02-27

1998-03-03

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

405158, 405 63, F16L 104

Patent

active

057227942

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The invention relates to a float for floating hoses, comprising a multilayered foam body surrounding the floating hose, a textile cover, the latter being present on the foam body and having in particular several crossed layers, as well as an outer covering consisting of an elastomer, a thermoplastic elastomer (TPE), or a thermoplastic material.
2. The Prior Art
Floating bodies for floating hoses are currently manufactured as integrated floating bodies in a way such that the foam layers are fused or glued together, forming one unit. A textile cover and an outer covering made of the above-mentioned materials are arranged on said floating body. In this connection, the two coverings are solidly joined with the actual hose body.
In connection with floating hoses structured in said way, the following damage can be observed due to external influences: high axial stress. result of axial and dynamic stress as well as buckling stress, with simultaneous breakage of the two coverings. the two coverings.


SUMMARY OF THE INVENTION

For the purpose of eliminating the aforementioned weak points and particularly for the purpose of increasing the resistance to slitting and the resistance to abrasion, the floating body according to the invention is provided with an additional textile, transverse reinforcement extending at an angle of 75.degree. to 90.degree., particularly 85.degree. to 90.degree. relative to the axis.


BRIEF DESCRIPTION OF THE DRAWINGS

Now, the invention is explained in the following on exemplified embodiments with reference to the schematic drawings, in which:
FIG. 1 shows an axial sectional view of a floating body with a useful basic structure;
FIG. 2 shows an axial sectional view of a floating body with the segments (A, B);
FIG. 3 shows an axial sectional view of the foam body with the sections (C, D);
FIG. 4 shows an axial sectional view of the corner zone of the face area and the cylindrical body with the segments (E, F), and a reinforcement arranged on the outside;
FIG. 5 shows a radial sectional view of the floating body with strips arranged in the radial direction; and
FIG. 6 shows an axial sectional view of the floating body with rings arranged in the radial direction.
FIG. 7 shows a side view of the textile cover of the embodiment shown in FIG. 2;
FIG. 8 shows a side view of the textile cover of an alternative embodiment of the invention; and
FIG. 9 shows a schematic view of the different angles of the textile cover within section XI shown in FIG. 7.


DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 shows the following layer structure of the floating body (1):
The transverse reinforcement (6), which is arranged between the textile cover (4) and the outer covering (5), is designed single-layered, whereby the rings, at an angle of 90.degree., are disposed closely against each other. The textile cover (4) and the transverse reinforcement (6) are preferably made of polyamide or polyester.
The foam body particularly consists of a polyethylene foam. With respect to the outer covering, the following materials are useful: (PVC).
The segments (A, B) shown in FIG. 2 have to be viewed in connection with the useful embodiments of the foam body (3) and the textile cover (4). In detail: segments A) and soft segments (B), whereby the segments (A) are hard in the zone of the face area. 54.degree. (segment A) and 65.degree. (segment B) relative to the axis, whereby the angle in the zone of the face area amounts to 54.degree. as shown in FIGS. 7 and 9.
Owing to such segmenting, the susceptibility of the floating body to wear is reduced to a considerable degree.
Within the framework of an alternative, the angle of the textile cover (4) may also be constant, whereby the angle relative to the axis usefully comes to 60.degree. as shown in FIG. 8.
FIG. 3 shows the foam core (3), which, in the radial direction, is alternately structured of hard foam layers (C) and soft foam layers (D), whereby the outer layers (C) are hard. In their radial structure, the f

REFERENCES:
patent: 3594835 (1971-07-01), Wilson
patent: 4107933 (1978-08-01), Lamy
patent: 4706711 (1987-11-01), Czvikovszky et al.

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