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GB2027838A - Detecting leakage in a transport hose - Google Patents

Detecting leakage in a transport hose Download PDF

Info

Publication number
GB2027838A
GB2027838A GB7920707A GB7920707A GB2027838A GB 2027838 A GB2027838 A GB 2027838A GB 7920707 A GB7920707 A GB 7920707A GB 7920707 A GB7920707 A GB 7920707A GB 2027838 A GB2027838 A GB 2027838A
Authority
GB
United Kingdom
Prior art keywords
hose
transport
passage
flexible bag
fluid
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.)
Granted
Application number
GB7920707A
Other versions
GB2027838B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP7185678A external-priority patent/JPS54163423A/en
Priority claimed from JP10652078A external-priority patent/JPS5533946A/en
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Publication of GB2027838A publication Critical patent/GB2027838A/en
Application granted granted Critical
Publication of GB2027838B publication Critical patent/GB2027838B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/283—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes for double-walled pipes
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/133—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/01—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses adapted for hoses having a multi-layer wall
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/30—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • 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
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A transport hose floating on the sea surface for transporting petroleum or like fluid, comprising a main hose body (1) including a reinforcing layer embedded therein and a metal fixture (2) secured to the end of the main hose body, a passage (9) arranged in the main hose body for guiding fluid leaked from a transport line to the end of the main hose body in its axial direction, and a leak detector (21) arranged at the end of the passage (9) and operative in response to the presence of leaked fluid so as to indicate that portion of the transport hose at which leakage has occurred. <IMAGE>

Description

SPECIFICATION Transport hose This invention relates to a transport hose which in use floats on the sea surface for transporting petroleum or like fluid.
In the case of transporting crude oil, for example, from a tanker to an oil reservoir installation on the land or vice versa, the tanker anchored off the shore is connected through a floating hose to an offshore buoy and the buoy is connected through a hose suspended therefrom and forming an underwater pipe line to the oil reservoir installation on the land. In such a transport line, the resilient hose is subject to crack failure in its inner surface rubber layer due to aging of the rubber or there often occurs leakage of the transport fluid out of the transport line due to separation between a nipple joint and the rubber. As a result, the leaked crude oil floats on the sea and results in pollution.
Under such circumstances, if the fluid leak is not discovered immediately, the amount of fluid leaked becomes sufficiently large to pollute the sea over a wide area. As a result, if the fluid passed through the hose begins to leak, it is necessary to locate the leak as soon as possible and to repair the leak. In practice, however, early detection of a leak has heretofore been extremely difficult since the transport hose is used on the sea surface.
The present invention provides a transport hose comprising a main hose body including a reinforcing layer embedded therein and a metal fixture secured to the end of the main hose body, a passage arranged in the main hose body for guiding fluid leaked from a transport line to the end of the main hose body in its axial direction, and a leak detector arranged at at least one end of the said passage and operative by the said leaked fluid.
The invention will be further described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a transport hose according to the invention laid between a tanker on the sea and a floating buoy; Figure 2 is an enlarged cross-sectional view of one embodiment of a transport hose according to the invention; and Figure 3 is an enlarged cross-sectional view of another embodiment of a transport hose according to the invention.
In Figs. 2 and 3 like reference numerals indicate like parts.
Fig. 1 shows a buoyant hose H according to the invention for transporting petroleum or like fluid from a tanker T anchored off the shore through an offshore buoy B, a hose Hb suspended from the buoy B and forming an underwater pipe line to an oil reservoir instailation on the land (not shown).
The transport hose shown in Fig. 2 comprises a main hose body 1 and a metal nipple or other fixture 2 secured to the inner surface of the end of the main hose body 1. The nipple 2 is provided at its outer periphery with a plurality of substantially saw tooth-shaped annular ribs 3a, 3b spaced apart from each other in the axial direction of the nipple 2.
The main hose body 1 is composed of an inner surface rubber layer 4 covering the outer surface of the nipple 2, a cord reinforcing layer 6 superimposed about the inner surface rubber layer 4 and wound around a bead wire 5 located beyond the annular rib 3a from the inside toward the outside thereof to form a turn-back portion, an intermediate rubber layer 7 superimposed about the cord reinforcing layer 6, and a resilient body 8 helically wound around the intermediate rubber layer 7 and including a passage 9 formed between adjacent turns thereof. About the outside of the helically wound resilient body 8 are superimposed a rubber lining sheet layer 10, a rubberized cord reinforcing layer 11, an intermediate rubber layer 12, and a weather resistant outer covering rubber layer 13.A buoyant material 14 is arranged at the center part of the hose body 1 and sandwiched between the intermediate rubber layer 12 and the outer rubber layer 13. The buoyant material 14 tends to exert buoyancy to the hose.
The passage 9 functions to guide fluid leaked through the inner surface rubber layer 4, cord reinforcing layer 6 and intermediate rubber layer 7, in the axial direction of the hose to the end thereof. The rubber lining sheet layer 10 and rubberized cord reinforcing layer 11 serve to prevent the leaked fluid which has reached the passage 9 from leaking further outwardly in the radial direction. The resilient body 8 is preferably formed of a foamed substance including continuous bubbles. As a result, the resilient body 8 permits the leaked fluid to easily pass from any position therethrough to the passage 9.
In the present embodiment, the nipple 2 is provided at each end thereof with a flange 15 for connection with the ends of hoses to be interconnected and with two depressions 1 6a, 16 b spaced apart from each other in the axial direction of the nipple 2. These depressions 16 a, 16 b are channel-shaped in section and covered with a flexible rubber sheet 17 which is folded within a space between the depressions 16a, 16b and includes a reinforcing layer embedded therein, if necessary. About the flexible rubber sheet 17 is superimposed a rubberized fabric 18. Each end of the rubberized fabric 18 is wound around a bead wire 19a, 196 enclosed in the channel-shaped depressions 1 6 a, 1 6 b respectively and hermetically sealed together with the rubber sheet 17 to the depressions 1 6a, 16b.About the rubberized fabric 18 is superimposed a rubber sheet 20. The rubber sheet 20, rub berized fabric 18 and flexible rubber sheet 17 as-a whole constitute a flexible bag.21.-A colouring agent 22 is releasably sandwiched between the folded rubber sheet 20 and exposed to the outer surface of the flexible bag 21. Binding cords 23, 24 fix the rubber sheet 2D to both the depression 16 a and the such face of the nipple 2.
At the junction between the flexible bag 21 and the -hose body 1, the depression 1 b is provided at its base with one or a plurality.of holes 25 extending therethrough and connecting the passage 9 with the inside of the flexible bag 21. Between the intermediate rubber layer 7 and the depression Ibis arranged an annular belt 26 having a depress sion connecting the passage 9 to the hole(s) 25.In addition, between the rubber lining layer 10 and the cord reinforcing layer 11.are sandwiched a foamed substance 27 and a binding cord 28 so as to firmly secure the end of the intermediate rubber layer 7, the easily ient body 8, the rubber lining layer 1-0 and the annular belt 26 to the nipple.2. The cord reinforcing layer 11 disposed on the binding cord 28 is extended between the rubber sheet 1 7 and the rubberized fabric 18 and along the inside surface of the depression 1 6 b. This cord reinforcing layer 11 and the turn-back portion of the rubberized fabric 18 are firmly secured by a binding cord 29 to the inside surface of the depression 16 b.The rubber sheet 20 is extended between the binding cord 29 and the intermediate rubber layer 12 until the rubber sheet 20 makes contact with the cord reinforcing layer 11. In addition, the intermediate rubber layer 12 is extended up to the outer surface of the flexible bag 21 folded between the depressions 16a, 1 6 b. As a result, it is possible to firmly secure and hermetically seal the flexible bag 21 to the hose body 1.
In the transport hose constructed as above described, if the hose body 1 is separated from the surface of the nipple 2, the fluid transported through the hose flows through the boundary between the hose body 1 and the nipple 2 and reaches the annular belt 26 and then flows through the depression therein and the hole(s) 25 into the inside of the flexible bag 21.
If the fluid transported through the hose leaks through the inner surface rubber layer 4, cord reinforcing layer 6 and intermediate rubber layer 7 in the radial direction of the hose, the fluid is prevented from leaking outwardly by the rubber lining layer 10. As a result, the fluid flows through the passage 9, preferably through both the passage 9 and the resilient body 8, and through the depression in the annular belt 26 and hole(s) 25 into the inside of the flexible bag 21.
The passage 9 is helically formed, so that even when only one passage 9 is provided the leaked fluid can pass along the passage 9 in a relatively easy manner.
As -a result, the pressure of the leaked fluid is applied to the flexible bag 21 and causes it to inflate as shown by broken lines. Thus, it is possible -to detect the presence or absence of leaked fluid from the outside of the hose in an easy and rapid manner. In addition, the deformation of the flexible bag 21 causes the colouring agent 22 to flow into the sea to colour the sea water, and the leaked fluid can easily be detected. Instead of inserting the colouring agent 22 between the folded portions of the rubber sheet 20, the folded portions of the rubber sheet may be coloured so that such coloured portions will be exposed on the outside of the flexible bag 21 when it is inflated.
In the transport hose shown in Fig. 3, about a rubberized cord reinforcing layer 11 having a cord angle of 45 are superimposed a binding cord 29, an intermediate rubber layer 12, a buoyant material 14, a binding -cord 30 and an outer covering rubber layer 13.
In the present embodiment, a nipple 2 is provided with a channel-shaped depression 31. The channel-shaped depression 31 is cov -ered with a rubber lining sheet layer 10 extending from the main hose body 1. The end of the rubberized cord reinforcing layer 11 is wound around a bead wire 19 enclosed in the channel-shaped depression 31 to form a turn-back portion, thereby firmly securing the end of the rubberized cord reinforcing layer 11 to the inner surface of the depression 31. The binding cord layer 29 and rubber layer 12 are superimposed about the reinforcing layer 11 so as to hermetically seal the depression 31 to the nipple 2.
In the transport hose constructed as above described, transport fluid leaked through an inner surface rubber 4, cord reinforcing layer 6 and intermediate rubber layer 7 is prevented from leaking further in the radial direction by the rubber lining layer 10. As a result, the leaked fluid flows through a passage 9 or body 8, a depression 32a of an annular belt 32 located at the end of the main hose body and interposed between the intermediate rubber layer 7 and the depression 31 to one or a plurality of holes 33 provided in the base of the depression 31 and thus communicating with the passage 9. The hole(s) 33 also communicate with a leak detector 34 such as a conventional pressure switch for producing an electrical signal when subjected to fluid pressure.
If the pressure of the leaked fluid is applied to the leak detector 34, the detector 34 is operated to give an electrical signal. This electrical signal is transmitted through a transmitter 35 and an antenna 36 embedded in the buoyant material 14 and composed of a vinyl covered copper wire.
The antenna 36 may be formed into any suitable shape provided that the antenna 36 is embedded in the foamed buoyant material 14. However, it is preferable to extend the antenna 36 along the axial direction of the main hose body as shown in Fig. 3 for the purpose of making the arrival distance of the transmitted electrical wave long.
Fig. 3 also shows an iron frame structure 37 for enclosing the leak detector 34 and transmitter 35 therein, an annular cover 38, and a bolt 39 for securing the cover 38 to the frame structure 37.
It is preferable to secure the leak detector 34, transmitter 35 and a battery 40 to the inner surface of the cover 38 and apply the pressure of the leaked fluid through the hole(s) 33 and a flow pipe (not shown) to the leak detector 34 secured to the inner surface of the cover 38. As a result, it is possible to easily inspect or exchange the battery 40, the leak detector 34 and the transmitter 35, in order to maintain their operating efficiency.
Various modifications may be made to the embodiments described with reference to the drawings. For example, there may be provided a plurality of helically formed passages 9 or the nipple 2 may be provided at its inside and outside surfaces with depressions.
The transport hose according to the invention is capable of preventing transport fluid from leaking outside the hose and easily and rapidly detecting leakage of fluid from the main hose body portions.
In addition, the transport hose shown in Fig. 3 is capable of transmitting a signal delivered from the leak detector through an antenna arranged outside the cord reinforcing layer 11 to a receiver on the land or on a ship. As a result, it is possible to minimise attenuation of the transmitted electrical wave.
In addition, since the antenna is embedded in the buoyant material located inside the outer covering rubber, the antenna can be effectively prevented from being damaged when the transport hose comes into collision with a ship.

Claims (7)

1. A transport hose comprising a main hose body including a reinforcing layer embedded therein and a metal fixture secured to the end of the main hose body, a passage arranged in the main hose body for guiding fluid leaked from a transport line to the end of the main hose body in its axial direction, and a leak detector arranged at at least one end of the said passage and operative by the said leaked fluid.
2. A transport hose as claimed in Claim 1, wherein the said passage is formed between adjacent turns of a helically formed resilient body.
3. A transport hose as claimed in Claim 1 or 2, wherein the leak detector is composed of a flexible bag located between two portions of the main hose body which are spaced apart from each other in the axial direction thereof and hermetically sealed under its deflated condition to the outside of the metal fixture, the said passage communicating with the inside of the flexible bag.
4. A transport hose as claimed in Claim 3, wherein the metal fixture is provided with two depressions into which are secured two end portions of the flexible bag, the said passage extending into one of the said depressions.
5. A transport hose as claimed in Claim 3 or 4, wherein the flexible bag is provided under a deflated and folded condition thereof with a colouring agent sandwiched between two outside surfaces of the folded flexible bag.
6. A transport hose as claimed in Claim 1 or 2, wherein the leak detector is composed of a pressure switch producing a detection signal in response to the said leaked fluid and adapted to transmit the said detection signal through an antenna embedded in a buoyant material in the main hose body.
7. A transport hose substantially as herein described with reference to, and as shown in, Fig. 2 or Fig. 3 of the accompanying drawings.
GB7920707A 1978-06-14 1979-06-14 Detecting leakage in a transport hose Expired GB2027838B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7185678A JPS54163423A (en) 1978-06-14 1978-06-14 Reinforced rubber hose
JP10652078A JPS5533946A (en) 1978-08-31 1978-08-31 Hose for transport

Publications (2)

Publication Number Publication Date
GB2027838A true GB2027838A (en) 1980-02-27
GB2027838B GB2027838B (en) 1982-12-15

Family

ID=26412969

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7920707A Expired GB2027838B (en) 1978-06-14 1979-06-14 Detecting leakage in a transport hose
GB8205275A Expired GB2099952B (en) 1978-06-14 1979-06-14 Transport hose

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8205275A Expired GB2099952B (en) 1978-06-14 1979-06-14 Transport hose

Country Status (4)

Country Link
FR (1) FR2437569A1 (en)
GB (2) GB2027838B (en)
IT (1) IT1121291B (en)
NL (1) NL7904597A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524111A1 (en) * 1982-03-23 1983-09-30 Dunlop Ltd FLEXIBLE PIPING WITH LEAK DETECTOR
FR2570021A1 (en) * 1984-09-12 1986-03-14 Muanyagipari Kutato Intezet ELASTIC FLEXIBLE HOSE COMPRISING A FOAM INSERT AND METHOD OF MANUFACTURING THE SAME
AU569980B2 (en) * 1983-04-27 1988-02-25 Dunlop Limited Leak detector
EP0535997A1 (en) * 1991-10-04 1993-04-07 Bridgestone Corporation Leakage-detecting hose
GB2262321A (en) * 1990-06-04 1993-06-16 Max Jerry Roach Pipeline monitoring and leak containment system
WO1994012823A1 (en) * 1992-11-24 1994-06-09 Dunlop Limited Hose end fitting and hose assembly
EP0611104A1 (en) * 1993-02-09 1994-08-17 Bridgestone Corporation Leakage-detecting hoses
US5413146A (en) * 1992-11-09 1995-05-09 The Yokohama Rubber Co., Ltd. Hose with releasable float for leak detection
WO1996005461A1 (en) * 1994-08-06 1996-02-22 Dunlop Limited Flexible hose
WO2001038769A1 (en) * 1999-11-23 2001-05-31 Phoenix Ag Double walled tube with leak display device
EP0952378A3 (en) * 1998-04-23 2002-05-02 The Yokohama Rubber Co., Ltd. Liquid transfer hose
EP1460408A1 (en) * 2003-03-11 2004-09-22 The Goodyear Tire & Rubber Company Leak detection system and method for offshore hose lines
US7387012B2 (en) 2006-07-14 2008-06-17 Veyance Technologies, Inc. Leak detection sensor system and method for double carcass hose
US7453367B2 (en) 2005-12-12 2008-11-18 Veyance Technologies, Inc. Leak detection system and method for offshore hose lines
US7509841B2 (en) 2006-07-14 2009-03-31 Veyance Technologies, Inc. Flexible leak detection system and method for double carcass hose

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8625290D0 (en) * 1986-10-22 1986-11-26 Wood Group Drilling & Prod Monitoring apparatus
IT1266168B1 (en) * 1994-07-15 1996-12-23 Manuli Rubber Ind Srl DOUBLE CASE FLEXIBLE HOSE
GB0621543D0 (en) 2006-10-30 2006-12-06 Wellstream Int Ltd Testing and venting pipe annulus
US8985217B2 (en) * 2008-09-24 2015-03-24 Schlumberger Technology Corporation Method, device, and system for determining water or liquid in the annulus of a flexible riser or flowline
FR2971829B1 (en) 2011-02-18 2014-01-03 Technip France FLEXIBLE TUBULAR CONDUIT FOR TRANSPORTING A PETROLEUM FLUID SUCH AS POLYPHASE FLUID OR GAS.
US20160195201A1 (en) * 2012-12-19 2016-07-07 Eaton Corporation Hose Assembly with Multistage Abrasion Indicator
FR3050172B1 (en) * 2016-04-19 2019-08-16 Alseamar FLOAT INTEGRATING A MEASURING DEVICE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT989115B (en) * 1973-06-13 1975-05-20 Treg Spa FLOATING SYSTEM FOR LOADING AND UNLOADING OIL AND SIMILAR PRODUCTS

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524111A1 (en) * 1982-03-23 1983-09-30 Dunlop Ltd FLEXIBLE PIPING WITH LEAK DETECTOR
AU569980B2 (en) * 1983-04-27 1988-02-25 Dunlop Limited Leak detector
FR2570021A1 (en) * 1984-09-12 1986-03-14 Muanyagipari Kutato Intezet ELASTIC FLEXIBLE HOSE COMPRISING A FOAM INSERT AND METHOD OF MANUFACTURING THE SAME
GB2262321B (en) * 1990-06-04 1995-01-25 Max Jerry Roach Pipeline monitoring and leak containment system and apparatus therefor
GB2262321A (en) * 1990-06-04 1993-06-16 Max Jerry Roach Pipeline monitoring and leak containment system
EP0535997A1 (en) * 1991-10-04 1993-04-07 Bridgestone Corporation Leakage-detecting hose
US5413146A (en) * 1992-11-09 1995-05-09 The Yokohama Rubber Co., Ltd. Hose with releasable float for leak detection
WO1994012823A1 (en) * 1992-11-24 1994-06-09 Dunlop Limited Hose end fitting and hose assembly
EP0611104A1 (en) * 1993-02-09 1994-08-17 Bridgestone Corporation Leakage-detecting hoses
WO1996005461A1 (en) * 1994-08-06 1996-02-22 Dunlop Limited Flexible hose
EP0952378A3 (en) * 1998-04-23 2002-05-02 The Yokohama Rubber Co., Ltd. Liquid transfer hose
WO2001038769A1 (en) * 1999-11-23 2001-05-31 Phoenix Ag Double walled tube with leak display device
US6374863B1 (en) 1999-11-23 2002-04-23 Phoenix Ag Double walled tube with leak display device
EP1460408A1 (en) * 2003-03-11 2004-09-22 The Goodyear Tire & Rubber Company Leak detection system and method for offshore hose lines
US7453367B2 (en) 2005-12-12 2008-11-18 Veyance Technologies, Inc. Leak detection system and method for offshore hose lines
US7387012B2 (en) 2006-07-14 2008-06-17 Veyance Technologies, Inc. Leak detection sensor system and method for double carcass hose
US7509841B2 (en) 2006-07-14 2009-03-31 Veyance Technologies, Inc. Flexible leak detection system and method for double carcass hose

Also Published As

Publication number Publication date
IT7923529A0 (en) 1979-06-13
FR2437569A1 (en) 1980-04-25
GB2099952B (en) 1983-05-25
GB2099952A (en) 1982-12-15
FR2437569B1 (en) 1982-07-23
GB2027838B (en) 1982-12-15
NL7904597A (en) 1979-12-18
IT1121291B (en) 1986-04-02

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990613