CN104696640A - Double-layer rubber hose for helicopter fuel system - Google Patents

Double-layer rubber hose for helicopter fuel system Download PDF

Info

Publication number
CN104696640A
CN104696640A CN201310646009.5A CN201310646009A CN104696640A CN 104696640 A CN104696640 A CN 104696640A CN 201310646009 A CN201310646009 A CN 201310646009A CN 104696640 A CN104696640 A CN 104696640A
Authority
CN
China
Prior art keywords
sebific duct
sleeve
ozzle
layer rubber
double
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.)
Pending
Application number
CN201310646009.5A
Other languages
Chinese (zh)
Inventor
杨勇志
戴礼军
王庆
王黑云
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.)
China Helicopter Research and Development Institute
Original Assignee
China Helicopter Research and Development Institute
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
Application filed by China Helicopter Research and Development Institute filed Critical China Helicopter Research and Development Institute
Priority to CN201310646009.5A priority Critical patent/CN104696640A/en
Publication of CN104696640A publication Critical patent/CN104696640A/en
Pending legal-status Critical Current

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
    • 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
    • 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
    • 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
    • F16L11/20—Double-walled hoses, i.e. two concentric hoses
    • 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
    • F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • F16L33/223—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts

Abstract

The invention provides a double-layer rubber hose for a helicopter fuel system, which can effectively reduce the fire risk caused by fuel or fuel steam leakage due to the failure of a fuel pipeline. The double-layer rubber hose for the helicopter fuel system comprises an outer sleeve, an inner sleeve, an inner-layer rubber pipe, an inner taper pipe mouth and an outer-layer rubber pipe, wherein the outer side of one end of the inner taper pipe mouth is in cup joint with the inner sleeve; one end of the inner-layer rubber pipe is in pressing connection between the inner taper pipe mouth and the inner sleeve; the outer side of the inner sleeve is in cup joint with the outer sleeve; and the outer-layer rubber pipe is in pressing connection between the inner sleeve and the outer sleeve, and is provided with a discharge pipe mouth near the outer sleeve.

Description

A kind of double-layer rubber flexible pipe for helicopter oil-fired system
Technical field
The present invention relates to helicopter oil-fired system design field, relate to a kind of double-layer rubber flexible pipe for helicopter oil-fired system.
Background technique
Cause risk on fire for reducing when helicopter crashes due to fuel leakage, to reduce casualties and property loss, modern military-civil helicopter all requires to install anti-crash oil-fired system.If oil feed line adopts hard tube, when helicopter crashes, due to malformation extruding or stretching oil feed line, easily use oil feed line to break, cause a large amount of fuel oils to leak, easily cause the danger of catching fire.And rubber hose has certain specific elongation and anti-extrusion performance, malformation when energy effective compensation helicopter crashes, therefore, fuel feeding, the gas pipeline of helicopter anti-crash oil-fired system all adopt rubber hose.
Traditional rubber hose can be aging after long-time use in helicopter environment, rubber tube wall there will be crackle and causes fuel blow, if be not checked through fuel blow position before flight, the fuel oil of seepage runs into after high temperature, electrical spark or burning things which may cause a fire disaster in helicopter flight process can catching fire, affects the safety of helicopter.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of double-layer rubber flexible pipe for helicopter oil-fired system, effectively can reduce the fuel oil that causes or fuel-steam because fuel pipe lost efficacy and to leak the risk causing and catch fire.
Technological scheme of the present invention: a kind of double-layer rubber flexible pipe for helicopter oil-fired system, comprising: outer sleeve, inner sleeve, internal layer sebific duct, inner cone ozzle, outer sebific duct;
Inner cone ozzle is socketed inner sleeve outside one end, and described internal layer sebific duct one end is crimped between inner cone ozzle and inner sleeve, and be socketed outer sleeve outside inner sleeve, outer sebific duct is crimped between inner sleeve and outer sleeve, and outer sebific duct is provided with excretion ozzle near outer sleeve place.
Beneficial effect of the present invention: the present invention arranges excretion ozzle at outer sebific duct near outer sleeve end, if hose lining tracheal rupture, the fuel oil leaked can flow out along the excretion ozzle of outer sebific duct, the leakage of oil situation of internal layer sebific duct can be determined by the leakage of oil situation detecting excretion ozzle, and then process, effectively can reduce the fuel oil that causes or fuel-steam because fuel pipe lost efficacy and to leak the risk causing and catch fire.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 be in Fig. 1 A-A to sectional view.
Embodiment
Below the present invention is described in further details.
The invention provides a kind of double-layer rubber flexible pipe for helicopter oil-fired system, as shown in Figure 1, 2, comprising: inner sleeve 2, outer sleeve 3, internal layer sebific duct 4, inner cone ozzle 5, outer sebific duct 6;
Inner cone ozzle 5 is socketed inner sleeve 2 outside one end, described internal layer sebific duct 4 one end is crimped between inner cone ozzle 5 and inner sleeve 2, be socketed outer sleeve 3 outside inner sleeve 2, outer sebific duct 6 is crimped between inner sleeve 2 and outer sleeve 3, and outer sebific duct 6 is provided with excretion ozzle 7 near outer sleeve 3 place.
For preventing because rubber hose stops fuel oil to flow between inside and outside layer pipeline gap because pipeline is out of shape or cause internal and external layer pipeline to be closed owing to adopting clip to fix flexible pipe when mounted, the present invention also comprises: supporting element 8,
Described supporting element 8 is arranged between internal layer sebific duct 4 and outer sebific duct 6 continuously, and supporting element 8 thickness is less than internal layer sebific duct 4 and outer sebific duct 6 gap, and excretion ozzle 7 relative position of outer sebific duct 6 does not arrange supporting element 8.
Further, be conveniently connected with existing interface, the present invention also comprises: cap nut 1,
Described cap nut 1 is arranged on inner cone ozzle 5 the other end, and described cap nut 1 is connected with existing oil transportation mouth or ventilating hole.
Under normal circumstances, fuel oil or fuel-steam are only at hose lining Bottomhole pressure.When causing due to reasons such as aging, mechanical deterioration or manufacturing deficiency damaging in the long-time using process of rubber pipeline, the damage of outer sebific duct finds by daily maintenance test, and when seepage appears in internal layer sebific duct, fuel oil is by the gap of inside and outside layer sebific duct, the excretion ozzle place of outer layer glue pipe end setting is flow to along pipeline, at excretion ozzle place connecting duct, the fuel oil of seepage is concentrated discharge, whether have fuel blow to judge by concentrated emission point by checking whether internal layer sebific duct exists damage.For preventing, because rubber hose stops fuel oil to flow between inside and outside layer sebific duct gap because pipeline is out of shape or cause internal and external layer pipeline to be closed owing to adopting clip to fix flexible pipe when mounted, 4 supporting elements can being installed outside internal layer sebific duct.

Claims (3)

1. for a double-layer rubber flexible pipe for helicopter oil-fired system, it is characterized in that, comprising: outer sleeve, inner sleeve, internal layer sebific duct, inner cone ozzle, outer sebific duct;
Inner cone ozzle is socketed inner sleeve outside one end, and described internal layer sebific duct one end is crimped between inner cone ozzle and inner sleeve, and be socketed outer sleeve outside inner sleeve, outer sebific duct is crimped between inner sleeve and outer sleeve, and outer sebific duct is provided with excretion ozzle near outer sleeve place.
2. a kind of double-layer rubber flexible pipe for helicopter oil-fired system as claimed in claim 1, is characterized in that, also comprise: supporting element,
Described supporting element is arranged between internal layer sebific duct and outer sebific duct continuously, and supporting element thickness is less than internal layer sebific duct and outer layer glue ligament, and the excretion ozzle relative position of outer sebific duct does not arrange supporting element.
3. a kind of double-layer rubber flexible pipe for helicopter oil-fired system as claimed in claim 2, is characterized in that, also comprise: cap nut,
Described cap nut is arranged on the inner cone ozzle the other end, and described cap nut is connected with oil transportation mouth or ventilating hole.
CN201310646009.5A 2013-12-04 2013-12-04 Double-layer rubber hose for helicopter fuel system Pending CN104696640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310646009.5A CN104696640A (en) 2013-12-04 2013-12-04 Double-layer rubber hose for helicopter fuel system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310646009.5A CN104696640A (en) 2013-12-04 2013-12-04 Double-layer rubber hose for helicopter fuel system

Publications (1)

Publication Number Publication Date
CN104696640A true CN104696640A (en) 2015-06-10

Family

ID=53344044

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310646009.5A Pending CN104696640A (en) 2013-12-04 2013-12-04 Double-layer rubber hose for helicopter fuel system

Country Status (1)

Country Link
CN (1) CN104696640A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106439369A (en) * 2016-11-17 2017-02-22 大连捷瑞流体控制股份有限公司 Hose assembly system with failure detection function
CN107763330A (en) * 2016-08-23 2018-03-06 开平市华灵管业有限公司 A kind of Universal pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19922106A1 (en) * 1999-05-17 2000-11-23 Klenk Gmbh Pipeline for conveying liquid fuel comprises inner pipe and outer sleeve forming intermediate chamber which allows leaks to be detected and which contains distance piece ensuring minimum clearance between pipe and sleeve
US6446661B2 (en) * 2000-06-05 2002-09-10 John G. Armenia Push-on safety hose
CN2809395Y (en) * 2005-08-11 2006-08-23 李宪信 Assembled air anti-freezing thermal-insulating pipe
CN101586720A (en) * 2009-04-23 2009-11-25 贵州航天精工制造有限公司 A kind ofly connect oil pipe assembly and the making method that the airplane engine fuel oil servomechanism is used
US20100186845A1 (en) * 2007-07-06 2010-07-29 Inge Knotten Hose device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19922106A1 (en) * 1999-05-17 2000-11-23 Klenk Gmbh Pipeline for conveying liquid fuel comprises inner pipe and outer sleeve forming intermediate chamber which allows leaks to be detected and which contains distance piece ensuring minimum clearance between pipe and sleeve
US6446661B2 (en) * 2000-06-05 2002-09-10 John G. Armenia Push-on safety hose
CN2809395Y (en) * 2005-08-11 2006-08-23 李宪信 Assembled air anti-freezing thermal-insulating pipe
US20100186845A1 (en) * 2007-07-06 2010-07-29 Inge Knotten Hose device
CN101586720A (en) * 2009-04-23 2009-11-25 贵州航天精工制造有限公司 A kind ofly connect oil pipe assembly and the making method that the airplane engine fuel oil servomechanism is used

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107763330A (en) * 2016-08-23 2018-03-06 开平市华灵管业有限公司 A kind of Universal pipe
CN106439369A (en) * 2016-11-17 2017-02-22 大连捷瑞流体控制股份有限公司 Hose assembly system with failure detection function
CN106439369B (en) * 2016-11-17 2019-04-26 大连捷瑞流体控制股份有限公司 Hose assembly system with failure detection

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PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150610

WD01 Invention patent application deemed withdrawn after publication