WO2007020503A2 - Reinforced hose - Google Patents
Reinforced hose Download PDFInfo
- Publication number
- WO2007020503A2 WO2007020503A2 PCT/IB2006/002180 IB2006002180W WO2007020503A2 WO 2007020503 A2 WO2007020503 A2 WO 2007020503A2 IB 2006002180 W IB2006002180 W IB 2006002180W WO 2007020503 A2 WO2007020503 A2 WO 2007020503A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reinforcing
- tensile strength
- reinforced hose
- hose
- reinforcing layer
- Prior art date
Links
Classifications
-
- 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
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
- F16L11/082—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire two layers
-
- 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
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
- F16L11/086—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers two layers
Definitions
- the present invention relates to a reinforced hose and to a reinforced hose having improved fatigue resistance and burst strength.
- High pressure reinforced hydraulic hose is typically used on a variety of fluid power operated machines, such as earth-moving machines, to provide a flexible connection between several moving parts of a hydraulic circuit employed on or within the machine.
- Such hoses often include a hollow polymeric inner tube on which successive cylindrical layers of reinforcing material, such as wire or textile, are concentrically applied to contain the radial and axial pressures developed within the inner tube.
- reinforcing material such as wire or textile
- the burst strength of a hose design may be increased by adding additional reinforcing material and/or layers-a practice generally discouraged because of its negative impact on the flexibility of the hose-or by universally increasing the tensile strength of each layer of reinforcement material-the latter coming at the expense of hose fatigue resistance.
- a reinforced hose includes a first reinforcing layer having a reinforcement material with a first tensile strength.
- a second reinforcing layer overlays the first reinforcing layer and includes a reinforcement material with a second tensile strength. The second tensile strength is substantially greater than the first tensile strength.
- a reinforced hose includes a first reinforcing layer including a reinforcement material having a first level of fatigue resistance and a second reinforcing layer overlaying the first reinforcing layer and including a reinforcement material having a second level of fatigue resistance. The first level of fatigue resistance is substantially greater than the second level of fatigue resistance.
- FIG. 1 is a perspective view, partly cut away, illustrating a hose according to an embodiment of the present invention
- FIG. 2 is a perspective view, partly cut away, illustrating a hose according to another embodiment of the present invention.
- FIG. 3 is a perspective view, partly cut away, illustrating a hose according to another embodiment of the present invention.
- Hose 10 is a multi-layer structure that includes a polymeric (e.g., rubber or plastic) inner tube 12, a first reinforcing layer 14 overlaying inner tube 12, an optional intermediate layer 16, a second reinforcing layer 18 overlaying first reinforcing layer 14 and intermediate layer 16, and an optional outer cover 20.
- Outer cover 20 may include, for example, an extruded layer of rubber or plastic, or may even comprise a reinforcing layer itself.
- first and second reinforcing layers 14, 18 may include, for example, alternating layers of spiraled reinforcement material as shown in FIG. 1, or braided reinforcement material as shown in FIG. 2.
- first and second reinforcing layers 14, 18 may include a single ply or multiple plies of reinforcement material. Each end 22, 24 of reinforcement material contained in first and second reinforcing layers 14, 18 may comprise metal wire, natural or synthetic fibers and textiles, and other reinforcement materials typically found in hose constructions.
- first and second to describe reinforcing layers 14, 18 is not intended to limit or otherwise dictate the position or placement of reinforcing layers 14, 18 within hose 10.
- a hose manufacturer typically performs, among other tests, an impulse test and a burst test on the hose.
- An impulse test measures a hose design's resistance to fatigue failure by cyclically subjecting the hose to hydraulic pressure.
- a burst test is a destructive hydraulic test employed to determine the ultimate strength of a hose by uniformly increasing internal pressure until failure.
- the highest load withstood by hose 10 during impulse testing was carried primarily by the reinforcing layer(s) closest to inner tube 12, e.g., first reinforcing layer 14. It was also discovered that the highest load withstood by hose 10 during burst testing was carried primarily by the outermost reinforcing layer(s), e.g., second reinforcing layer 18.
- first reinforcing layer 14 includes at least one end of reinforcement material 22 having a first tensile strength and second reinforcing layer 18 includes at least one end of reinforcement material 24 having a second tensile strength.
- first reinforcing layer 14 includes at least one end of reinforcement material 22 having a first tensile strength
- second reinforcing layer 18 includes at least one end of reinforcement material 24 having a second tensile strength.
- individual ends of the proposed reinforcement material were tested to determine their ultimate load carrying capability and fatigue resistance. The results of this test are included below:
- the fatigue testing results show that, between two individual ends of steel wire with the same diameter (e.g., 0.71 mm), the lower tensile strength material exhibits a significantly greater resistance to fatigue, while the higher tensile strength material is able to support a higher ultimate load. Notably, an even more dramatic improvement in fatigue resistance may be obtain by further decreasing the nominal tensile strength of the material (e.g., nominal tensile strength of 2300 N/mm 2 ). To counteract the reduction in ultimate load capacity of the material, the material diameter may be increased.
- a hose 10 according to an embodiment of the present invention is shown in FIG. 3 that includes a number of first reinforcing layers 14 having a reinforcement material 22 with a first tensile strength and a first diameter.
- First reinforcing layers 14 are provided adjacent inner tube 12 and a number of second reinforcing layers 18 overlay first reinforcing layers 14.
- Second reinforcing layers 18 include at a reinforcement material 24 having a second tensile strength and a second diameter.
- the results of the testing show that the hose construction according to an embodiment of the present invention exhibits a significantly greater fatigue resistance than the comparative hose construction.
- the test results are directly attributable to the inner reinforcing layer and reinforcing layer #2 having a reinforcement material with a substantially lower tensile strength than the reinforcement material contained in the outer four reinforcing layers.
- the present invention is not limited to hose constructions that included six layers of spiraled reinforcement or even spiraled reinforcement at ail- Indeed, the present invention includes hose constructions having braided reinforcing layers (see, e.g., FIG. 2), combinations of spiraled and braided reinforcing layers, and other reinforcing layer configurations.
- first and second reinforcing layers 14, 18 may include reinforcement materials having similar tensile strengths
- the first reinforcing layer material may have a level of fatigue resistance substantially greater than the level of fatigue resistance exhibited by the second reinforcing layer material.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006281134A AU2006281134B2 (en) | 2005-08-15 | 2006-08-09 | Reinforced hose |
CA2618866A CA2618866C (en) | 2005-08-15 | 2006-08-09 | Reinforced hose |
JP2008526561A JP5168582B2 (en) | 2005-08-15 | 2006-08-09 | Reinforced hose |
CN2006800298669A CN101243278B (en) | 2005-08-15 | 2006-08-09 | Reinforced hose |
EP06779953.6A EP1915560B1 (en) | 2005-08-15 | 2006-08-09 | Reinforced hose |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/203,882 US7328725B2 (en) | 2005-08-15 | 2005-08-15 | Reinforced hose |
US11/203,882 | 2005-08-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007020503A2 true WO2007020503A2 (en) | 2007-02-22 |
WO2007020503A3 WO2007020503A3 (en) | 2007-04-19 |
Family
ID=37649535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2006/002180 WO2007020503A2 (en) | 2005-08-15 | 2006-08-09 | Reinforced hose |
Country Status (7)
Country | Link |
---|---|
US (1) | US7328725B2 (en) |
EP (1) | EP1915560B1 (en) |
JP (1) | JP5168582B2 (en) |
CN (1) | CN101243278B (en) |
AU (1) | AU2006281134B2 (en) |
CA (1) | CA2618866C (en) |
WO (1) | WO2007020503A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8479777B2 (en) | 2008-11-21 | 2013-07-09 | Parker-Hannifin Corporation | Low temperature, high pressure rubber hose |
WO2015000773A1 (en) * | 2013-07-04 | 2015-01-08 | Nv Bekaert Sa | Hose with optimised steel wire reinforcement layers |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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US8678042B2 (en) | 1995-09-28 | 2014-03-25 | Fiberspar Corporation | Composite spoolable tube |
CA2490176C (en) | 2004-02-27 | 2013-02-05 | Fiberspar Corporation | Fiber reinforced spoolable pipe |
US8187687B2 (en) * | 2006-03-21 | 2012-05-29 | Fiberspar Corporation | Reinforcing matrix for spoolable pipe |
US8839822B2 (en) * | 2006-03-22 | 2014-09-23 | National Oilwell Varco, L.P. | Dual containment systems, methods and kits |
US8746289B2 (en) * | 2007-02-15 | 2014-06-10 | Fiberspar Corporation | Weighted spoolable pipe |
CA2641492C (en) * | 2007-10-23 | 2016-07-05 | Fiberspar Corporation | Heated pipe and methods of transporting viscous fluid |
GB0820671D0 (en) * | 2008-11-12 | 2008-12-17 | Wellstream Int Ltd | Armour reinforcement |
US9127546B2 (en) | 2009-01-23 | 2015-09-08 | Fiberspar Coproation | Downhole fluid separation |
US8783300B2 (en) * | 2009-08-14 | 2014-07-22 | Kongsberg Actuation Systems Ii, Inc. | Hose assembly and method of forming the same |
US8399767B2 (en) | 2009-08-21 | 2013-03-19 | Titeflex Corporation | Sealing devices and methods of installing energy dissipative tubing |
US8955599B2 (en) | 2009-12-15 | 2015-02-17 | Fiberspar Corporation | System and methods for removing fluids from a subterranean well |
CN102803646B (en) | 2009-12-15 | 2016-04-20 | 菲伯斯公司 | For removing the system and method for fluid from missile silo |
MX358020B (en) | 2012-08-10 | 2018-08-02 | Nat Oilwell Varco Lp | Composite coiled tubing connectors. |
US9541225B2 (en) | 2013-05-09 | 2017-01-10 | Titeflex Corporation | Bushings, sealing devices, tubing, and methods of installing tubing |
EP3033474B1 (en) * | 2013-11-08 | 2018-12-05 | Halliburton Energy Services, Inc. | Method of creating a lateral wellbore, using a casing string with pre-milled windows having a composite material covering |
EP3482112B1 (en) * | 2016-07-06 | 2023-08-16 | National Oilwell Varco Denmark I/S | A flexible armoured pipe with a retaining layer of metal elongate strip |
IT201800009085A1 (en) * | 2018-10-02 | 2020-04-02 | Manuli Hydraulics Italia Srl | FLEXIBLE HYDRAULIC HOSE |
CN214887010U (en) * | 2020-10-22 | 2021-11-26 | 烟台杰瑞石油装备技术有限公司 | Fracturing conveying system |
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US4343333A (en) * | 1979-08-27 | 1982-08-10 | Eaton Corporation | Fatigue resistant high pressure hose |
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JP2692480B2 (en) * | 1992-03-05 | 1997-12-17 | 豊田合成株式会社 | Reinforced hose |
US5660210A (en) * | 1992-03-05 | 1997-08-26 | Toyoda Gosei Co., Ltd. | Layered rubber hose with reinforcing |
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CN2142168Y (en) * | 1992-11-19 | 1993-09-15 | 常州高压软管厂 | High-pressure plastic hose twined with steel wire |
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JPH0926062A (en) * | 1995-07-12 | 1997-01-28 | Yokohama Rubber Co Ltd:The | High pressure hose |
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JP2001056073A (en) * | 1999-08-13 | 2001-02-27 | Bridgestone Flowtech Corp | Very high pressure hose |
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MXPA01001935A (en) * | 2000-07-04 | 2002-08-20 | Hitachi Cable | Brake hose. |
MXPA03006529A (en) * | 2001-01-30 | 2003-09-22 | Parker Hannifin Corp | Thermoplastic reinforced hose construction. |
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US6626211B2 (en) * | 2001-11-27 | 2003-09-30 | Toyoda Gosei Co., Ltd. | Brake hose |
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JP2005114135A (en) * | 2003-10-10 | 2005-04-28 | Toyoda Gosei Co Ltd | Reinforced hose |
-
2005
- 2005-08-15 US US11/203,882 patent/US7328725B2/en active Active
-
2006
- 2006-08-09 CN CN2006800298669A patent/CN101243278B/en active Active
- 2006-08-09 CA CA2618866A patent/CA2618866C/en active Active
- 2006-08-09 EP EP06779953.6A patent/EP1915560B1/en active Active
- 2006-08-09 JP JP2008526561A patent/JP5168582B2/en active Active
- 2006-08-09 WO PCT/IB2006/002180 patent/WO2007020503A2/en active Application Filing
- 2006-08-09 AU AU2006281134A patent/AU2006281134B2/en active Active
Non-Patent Citations (1)
Title |
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None |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8479777B2 (en) | 2008-11-21 | 2013-07-09 | Parker-Hannifin Corporation | Low temperature, high pressure rubber hose |
WO2015000773A1 (en) * | 2013-07-04 | 2015-01-08 | Nv Bekaert Sa | Hose with optimised steel wire reinforcement layers |
CN105358888A (en) * | 2013-07-04 | 2016-02-24 | 贝卡尔特公司 | Hose with optimised steel wire reinforcement layers |
EA029663B1 (en) * | 2013-07-04 | 2018-04-30 | Нв Бекаэрт Са | Hose with optimised steel wire reinforcement layers |
US10189225B2 (en) | 2013-07-04 | 2019-01-29 | Nv Bekaert Sa | Hose with optimized steel wire reinforcement layers |
Also Published As
Publication number | Publication date |
---|---|
AU2006281134A1 (en) | 2007-02-22 |
CA2618866C (en) | 2012-10-30 |
CA2618866A1 (en) | 2007-02-22 |
WO2007020503A3 (en) | 2007-04-19 |
CN101243278A (en) | 2008-08-13 |
EP1915560B1 (en) | 2014-04-02 |
JP2009505017A (en) | 2009-02-05 |
US20070034275A1 (en) | 2007-02-15 |
CN101243278B (en) | 2012-03-07 |
US7328725B2 (en) | 2008-02-12 |
AU2006281134B2 (en) | 2010-11-25 |
EP1915560A2 (en) | 2008-04-30 |
JP5168582B2 (en) | 2013-03-21 |
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