WO2008000854A1 - Sistema de aislamiento de corriente para sistemas de fluidos - Google Patents
Sistema de aislamiento de corriente para sistemas de fluidos Download PDFInfo
- Publication number
- WO2008000854A1 WO2008000854A1 PCT/ES2006/070088 ES2006070088W WO2008000854A1 WO 2008000854 A1 WO2008000854 A1 WO 2008000854A1 ES 2006070088 W ES2006070088 W ES 2006070088W WO 2008000854 A1 WO2008000854 A1 WO 2008000854A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- parts
- linear element
- insulating insert
- fluid system
- fluid
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/32—Safety measures not otherwise provided for, e.g. preventing explosive conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D45/02—Lightning protectors; Static dischargers
-
- 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
- F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
- F16L25/02—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for electrically insulating the two pipe ends of the joint from each other
- F16L25/025—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for electrically insulating the two pipe ends of the joint from each other for joints with sleeve or socket
-
- 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
- F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
- F16L25/02—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for electrically insulating the two pipe ends of the joint from each other
- F16L25/03—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for electrically insulating the two pipe ends of the joint from each other in non-disconnectable pipe joints
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Definitions
- the invention relates to an insulation system for fluid systems subject to the risk of possible electric shock using insulating inserts between parts of the fluid system linear elements and, more particularly, to an insulation system for protecting fuel systems from aircraft against electric shocks caused by lightning strike in fuel tanks made of low electrical conductivity materials.
- Composite materials offer a little electrical resistance compared to metallic materials.
- the latter have traditionally been used in the aeronautical context for the manufacture of structures intended for fuel storage, given their mechanical characteristics in relation to the weight of these materials.
- the high electrical resistance inherent in composite materials causes an induction effect of great relevance in the internal systems of the fuel tank. Said effect induces internal electrical currents that can cause catastrophic failures or phenomena for the overall structural integrity.
- Hot Spots The high current density in certain specific locations of the structure as junctions or intersection elements can cause high temperature points. If this temperature exceeds at 200 ° C (auto ignition point of the fuel considered by FAA / JAA authorities), the fuel can reach its flash point.
- Electric arcs (“sparking"): the flow of current through materials with different resistivities and in geometrically separated locations can produce discharges in the form of an electric arc (potential difference) and causing ignition of flammable fuel / liquid contained in the structure .
- the present invention relates to such an insulating insert that can be used both in places of little available space and in areas of insulating-floating elements of greater length.
- the present invention proposes an electrical isolation system for a linear element that is part of a fluid system subject to risks of possible external electrical discharges using an insulating insert between two parts of said linear element, according to which said parts are provided with the grooved edges and the insulating insert is a piece of matter! insulator that is formed between said parts so as to provide an inner conduit for the passage of fluid between them and covers said grooved edges ensuring the tight connection of the insulating insert with the two parts of the linear element.
- the insulating insert is formed by an injection technique using an appropriate mold.
- the linear element to which the insulation system is applied is a metal pipe for the passage of fuel and the grooved edges of the parts between which the insulating insert is located include diametral grooves to facilitate the coupling of the insulating insert and longitudinal grooves. to prevent its rotation.
- the insulation system object of this invention is applicable to combustion and ventilation pipes that are part of fuel systems installed in aircraft, when it is necessary to stop the current or isolate sections of the installation where the passage thereof is foreseen.
- An advantage of the system object of the present invention is that the insulating insert joins the two parts of the linear element without the need for mechanical joining elements such as bolts, rivets, washers or nuts.
- Another advantage of the system object of the present invention is the tightness of the union between the insulating insert and the two parts of the line element !, without the need of specific means for this, such as gaskets or rubber gaskets with the consequent reduction in the costs of maintenance.
- Another advantage of the system object of the present invention is the reduction of manufacturing and assembly costs by eliminating machined parts in complex insulating material.
- Figure 1 shows a sectional view of two parts of a pipe with an insulating insert following the system object of the present invention. - TO -
- Figure 2 shows a perspective view of a pipe with an insulating insert following the system object of the present invention.
- Figure 3 shows a perspective view of the two parts of the pipe before forming the insulating insert between them.
- the insulating insert 12 is a piece tightly connected to the parts 14, 16 of a metal pipe. Such a connection is produced by forming the insulating insert 12 between said parts 14, 16 by any technique that is appropriate. Therefore, specific elements of union and / or sealing are not used.
- An appropriate technique is the injection using an appropriate mold (not shown) resulting in an insulating insert 12 in a cylindrical shape.
- the injection can be carried out either externally or internally avoiding internal steps according to needs.
- preferred insulating materials that can be used are nylon, polyamide and e! peek
- edges of the parts 14, 16 of the metal pipe are grooved to facilitate the tight connection of the insulating insert 12 formed in situ.
- the expression grooved edges should be understood in a broad sense including any type of striatum that allows the pointed purpose.
- the parts 14, 16 of the metal pipe have edges with diametral grooves 20 and longitudinal 22 to facilitate the fixing of the insulating insert 12.
- the insulating insert 12 must be sized so as to prevent the passage of the electric current when it circulates through the fuel or ventilation pipes in which it is inserted. From the technical point of view, to said insulating insert insulation tests are carried out during which it is subjected to a potential difference between the ends of between 500 VDC and 1000 VDC providing an electrical isolation of the order of 100 Mega ohms as a requirement minimum. It is estimated, in this regard, that the minimum length of the zone 18 of the insulating insert 12 located between the parts 14, 16 of the metal pipe must be at least 25 mm to meet the requirements of lightning and static current insulation.
- the insulating insert 12 is applicable as we have already mentioned to fuel installations in which it is intended to isolate the current by sections or apply a single bonding ("single bonding point") philosophy.
- the parts 14, 16 of the metal pipe must include elements 26, 28 to install a grounding, since in those systems a double grounding is required.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2006/070088 WO2008000854A1 (es) | 2006-06-22 | 2006-06-22 | Sistema de aislamiento de corriente para sistemas de fluidos |
BRPI0621801-6A BRPI0621801A2 (pt) | 2006-06-22 | 2006-06-22 | sistema de isolamento de corrente para sistemas de fluidos |
CA002657500A CA2657500A1 (en) | 2006-06-22 | 2006-06-22 | Current-insulating system for fluid systems |
EP06764386A EP2034228A4 (en) | 2006-06-22 | 2006-06-22 | CURRENT ISOLATION SYSTEM FOR FLUID SYSTEMS |
US11/516,033 US7686344B2 (en) | 2006-06-22 | 2006-09-05 | Current insulation system for fluid systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2006/070088 WO2008000854A1 (es) | 2006-06-22 | 2006-06-22 | Sistema de aislamiento de corriente para sistemas de fluidos |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008000854A1 true WO2008000854A1 (es) | 2008-01-03 |
Family
ID=38845155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2006/070088 WO2008000854A1 (es) | 2006-06-22 | 2006-06-22 | Sistema de aislamiento de corriente para sistemas de fluidos |
Country Status (5)
Country | Link |
---|---|
US (1) | US7686344B2 (es) |
EP (1) | EP2034228A4 (es) |
BR (1) | BRPI0621801A2 (es) |
CA (1) | CA2657500A1 (es) |
WO (1) | WO2008000854A1 (es) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010001238A1 (en) * | 2008-07-02 | 2010-01-07 | Eaton Corporation | Dielectric isolators |
US8956556B2 (en) | 2008-07-02 | 2015-02-17 | Eaton Corporation | Dielectric isolators |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9136036B2 (en) * | 2008-07-02 | 2015-09-15 | Miller Waster Mills | Injection moldable, thermoplastic composite materials |
FR2948254B1 (fr) * | 2009-07-16 | 2011-12-30 | Airbus Operations Sas | Dispositif de protection de tuyauteries contre la foudre |
EP2719934B1 (en) | 2010-05-17 | 2015-05-27 | Parker Hannifin GmbH | Dielectric fitting assembly |
GB201014699D0 (en) | 2010-09-06 | 2010-10-20 | Airbus Uk Ltd | A pipe connector |
GB201020504D0 (en) * | 2010-12-03 | 2011-01-19 | Magma Global Ltd | Pipe system |
FR2975162B1 (fr) | 2011-05-09 | 2014-03-21 | Airbus Operations Sas | Dispositif de raccordement de tuyauteries carburant pour aeronef |
US9061768B2 (en) | 2011-10-20 | 2015-06-23 | The Boeing Company | Electrostatic discharge protected structure pass-thru |
US9233758B2 (en) * | 2011-12-16 | 2016-01-12 | The Boeing Corporation | Electrostatic discharge protected ferrule |
US9688419B2 (en) | 2012-06-08 | 2017-06-27 | The Boeing Company | Composite tubes for a fluid transport system |
US9309994B2 (en) * | 2012-11-26 | 2016-04-12 | Parker-Hannifin Corporation | Dielectric fitting mounting device |
US10030798B2 (en) * | 2013-02-18 | 2018-07-24 | The Boeing Company | Bulkhead fitting |
JP2014188239A (ja) * | 2013-03-28 | 2014-10-06 | Seiko Epson Corp | 流体噴射装置、および、医療機器 |
JP6674740B2 (ja) * | 2015-02-10 | 2020-04-01 | 三菱航空機株式会社 | バーストディスク装置および航空機 |
BR102015028035B1 (pt) * | 2015-11-06 | 2022-04-19 | Gestway - Gestão De Infra Estruturas Ltda | Sistema de fixação rápida inviolável e estanque com lacre externo nervurado |
DE102017128251A1 (de) * | 2017-11-29 | 2019-05-29 | Airbus Operations Gmbh | Abgasleitung für eine Batterie in einem Luftfahrzeug |
EP3719372B1 (en) | 2019-04-02 | 2023-06-07 | Crompton Technology Group Limited | Electrical isolator |
US11530633B2 (en) * | 2019-12-05 | 2022-12-20 | Rolls-Royce Corporation | Efficient grounding of electrical connection with challenging bonding path |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB769886A (en) * | 1955-06-22 | 1957-03-13 | Parkinson And Cowan Ltd | An electrically insulating connector for gas supply pipes |
US3115354A (en) * | 1959-12-15 | 1963-12-24 | Mueller Co | Insulated pipe coupling |
BE749909R (fr) * | 1970-05-04 | 1970-10-16 | Meuse Tubes Usines | Manchon isolant pour |
DE2253529A1 (de) * | 1972-11-02 | 1974-05-09 | Soldeck Fa Hans | Vorrichtung zur elektrisch isolierten verbindung zweier metallrohre |
US4011652A (en) * | 1976-04-29 | 1977-03-15 | Psi Products, Inc. | Method for making a pipe coupling |
US4398754A (en) * | 1980-08-11 | 1983-08-16 | Kerotest Manufacturing Corp. | Electrically insulated pipe coupling and method for making the same |
GB2404401A (en) * | 2003-07-31 | 2005-02-02 | Weatherford Lamb | Subsurface electromagnetic telemetry system |
WO2007039650A1 (es) | 2005-09-29 | 2007-04-12 | Airbus España, S.L. | Método de protección de depósitos de combustible fabricados con materiales compuestos contra descargas eléctricas |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US873215A (en) * | 1906-03-31 | 1907-12-10 | Standard Underground Cable Company | Joint for metal-sheathed cables. |
US1888241A (en) * | 1928-05-31 | 1932-11-22 | G & W Electric Speciality Co | Insulating joint |
US3484121A (en) * | 1966-09-26 | 1969-12-16 | Wayne E Quinton | Cannula extension and connector apparatus |
US3989280A (en) * | 1972-09-18 | 1976-11-02 | Schwarz Walter | Pipe joint |
US3916954A (en) * | 1973-12-10 | 1975-11-04 | Eugene Hochhausen | Long path insulating device for use in a pipeline |
US4277091A (en) * | 1979-04-19 | 1981-07-07 | Hunter John J | Coupling for lined pipe |
US4346922A (en) * | 1980-03-21 | 1982-08-31 | Hisao Ohtsuga | Device for preventing leakage at pipe joints |
GB2319315B (en) * | 1996-11-09 | 2000-06-21 | British Gas Plc | A method of joining lined pipes |
US5944359A (en) * | 1997-05-12 | 1999-08-31 | Pureflex Inc. | Flangeless piping system for lined pipe |
US6126206A (en) * | 1998-02-20 | 2000-10-03 | Miller Pipeline Corporation | Internal conduit sealing member and band |
US6692039B2 (en) * | 2002-02-08 | 2004-02-17 | Hunting Hti Rehab, Inc., Llc | Internal conduit sealing installation |
-
2006
- 2006-06-22 CA CA002657500A patent/CA2657500A1/en not_active Abandoned
- 2006-06-22 BR BRPI0621801-6A patent/BRPI0621801A2/pt not_active IP Right Cessation
- 2006-06-22 EP EP06764386A patent/EP2034228A4/en not_active Withdrawn
- 2006-06-22 WO PCT/ES2006/070088 patent/WO2008000854A1/es active Application Filing
- 2006-09-05 US US11/516,033 patent/US7686344B2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB769886A (en) * | 1955-06-22 | 1957-03-13 | Parkinson And Cowan Ltd | An electrically insulating connector for gas supply pipes |
US3115354A (en) * | 1959-12-15 | 1963-12-24 | Mueller Co | Insulated pipe coupling |
BE749909R (fr) * | 1970-05-04 | 1970-10-16 | Meuse Tubes Usines | Manchon isolant pour |
DE2253529A1 (de) * | 1972-11-02 | 1974-05-09 | Soldeck Fa Hans | Vorrichtung zur elektrisch isolierten verbindung zweier metallrohre |
US4011652A (en) * | 1976-04-29 | 1977-03-15 | Psi Products, Inc. | Method for making a pipe coupling |
US4398754A (en) * | 1980-08-11 | 1983-08-16 | Kerotest Manufacturing Corp. | Electrically insulated pipe coupling and method for making the same |
GB2404401A (en) * | 2003-07-31 | 2005-02-02 | Weatherford Lamb | Subsurface electromagnetic telemetry system |
WO2007039650A1 (es) | 2005-09-29 | 2007-04-12 | Airbus España, S.L. | Método de protección de depósitos de combustible fabricados con materiales compuestos contra descargas eléctricas |
Non-Patent Citations (1)
Title |
---|
See also references of EP2034228A4 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010001238A1 (en) * | 2008-07-02 | 2010-01-07 | Eaton Corporation | Dielectric isolators |
US8956556B2 (en) | 2008-07-02 | 2015-02-17 | Eaton Corporation | Dielectric isolators |
US9234615B2 (en) | 2008-07-02 | 2016-01-12 | Eaton Corporation | Dielectric isolators |
US9618148B2 (en) | 2008-07-02 | 2017-04-11 | Eaton Corporation | Dielectric isolators |
Also Published As
Publication number | Publication date |
---|---|
EP2034228A1 (en) | 2009-03-11 |
US20090071676A1 (en) | 2009-03-19 |
BRPI0621801A2 (pt) | 2011-12-20 |
CA2657500A1 (en) | 2008-01-03 |
US7686344B2 (en) | 2010-03-30 |
EP2034228A4 (en) | 2011-03-30 |
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