GB2398541A - A material for providing subsea impact protection - Google Patents
A material for providing subsea impact protection Download PDFInfo
- Publication number
- GB2398541A GB2398541A GB0303673A GB0303673A GB2398541A GB 2398541 A GB2398541 A GB 2398541A GB 0303673 A GB0303673 A GB 0303673A GB 0303673 A GB0303673 A GB 0303673A GB 2398541 A GB2398541 A GB 2398541A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impact
- elastomeric
- outer layers
- porous
- impact protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000013536 elastomeric material Substances 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000011148 porous material Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 230000035939 shock Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/08—Reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
An impact resistant material comprises a porous elastomeric core, laminate to solid elastomeric facing layers which have a number of apertures running therethrough. One or more strata of the material may be applied to a substrate to provide an impact resistant cladding. The material is particularly stated to be for use in subsea application, eg. for protecting oil pipelines or well heads. When used underwater, the material will fill up with water. When compressed due to an impact, the subsequent movement of water through the porous material causes it to act as a fluid damper.
Description
A MATERIAL FOR PROVIDING SUBSEA IMPACT PROTECTION
DESCRIPTION
The invention relates to a material for protecting subsea equipment from impact damage.
Structures and pipelines, installed subsea, may be damaged by objects dropped from an adjacent structure or by trawler fishing gear.
Conventional pipeline protection consists of an elastomeric sleeve, which is fitted over the pipeline. Concrete block mattresses, laid over the pipeline, are also used.
These types of sleeving provide abrasion protection and some cushioning but little impact protection. In the case of elastomeric sleeving, the material provides insufficient shock absorption and no structural support whilst concrete mattresses are too rigid and simply transfer the impact load into the pipeline. Weliheads are usually protected by large fabricated structures. These will distort under heavy load and absorb the impact thus providing protection to the welihead, however they have no inbuilt means for reducing the impact load on the protective structure to reduce its distortion.
According to the present invention, there is provided a shock absorbing material, which may be moulded during manufacture to any required shape to act as an impact absorbing cushion. This material may be fitted directly onto an object to provide protection or be fitted to a shock absorbing structure for additional protection.
The material will generally be manufactured as a layered composite but single layers of the material may be used individually for specific applications.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows the said material: Layer 1 in this embodiment is the central core. This material is elastomeric, porous and permeable and in use will be filled or will fill automatically with fluid, for example water. This layer acts as a hydraulic damper in that when an impact load hits this material and it collapses, the fluid will be driven out of the pores. The impact energy is therefore dissipated by the viscous damping of the fluid moving through the material.
Layers 2 and 3 are layers of generally solid elastomeric material. These layers generally seal the fluid into the porous material in Layer 1. Optionally, Layers 2 and 3 may be reinforced with non elastomeric material in order to prevent these layers stretching locally around the impact area. Layers 2 and 3 although generally solid, will have a designated number of through holes to allow the fluid to escape from Layer 1 during impact. r
Claims (3)
1. A layered material comprising a porous and permeable elastomeric central core with outer layers of generally solid elastomeric material but with a designated number of through vent holes, the whole acting as a viscous damped impact absorbing material.
2. A material as claimed in Claim 1 wherein the outer layers of said material are reinforced with non elastomeric material to prevent stretching of said outer layers.
3. A material as claimed in Claim 1 and Claim 2 wherein the reinforcing in the outer layers is directionally orientated to control the tensile stretching of the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0303673A GB2398541A (en) | 2003-02-18 | 2003-02-18 | A material for providing subsea impact protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0303673A GB2398541A (en) | 2003-02-18 | 2003-02-18 | A material for providing subsea impact protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0303673D0 GB0303673D0 (en) | 2003-03-19 |
| GB2398541A true GB2398541A (en) | 2004-08-25 |
Family
ID=9953204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0303673A Withdrawn GB2398541A (en) | 2003-02-18 | 2003-02-18 | A material for providing subsea impact protection |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2398541A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172168A (en) * | 1977-07-05 | 1979-10-23 | Firma Carl Freudenberg | Lay-flat flooring slab |
| GB2263752A (en) * | 1992-01-22 | 1993-08-04 | Terence Jeffrey Corbishley | Protection of underwater pipelines and other structures |
-
2003
- 2003-02-18 GB GB0303673A patent/GB2398541A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172168A (en) * | 1977-07-05 | 1979-10-23 | Firma Carl Freudenberg | Lay-flat flooring slab |
| GB2263752A (en) * | 1992-01-22 | 1993-08-04 | Terence Jeffrey Corbishley | Protection of underwater pipelines and other structures |
Non-Patent Citations (2)
| Title |
|---|
| WPI Abstract, Acc. No. 1984-244141 & DE 1629462 A * |
| WPI Abstract, Acc. No. 1995-162843 & DE 4336468 A * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0303673D0 (en) | 2003-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |