CN1945004A - High-pressure pipeline with sheath - Google Patents
High-pressure pipeline with sheath Download PDFInfo
- Publication number
- CN1945004A CN1945004A CNA2006101420231A CN200610142023A CN1945004A CN 1945004 A CN1945004 A CN 1945004A CN A2006101420231 A CNA2006101420231 A CN A2006101420231A CN 200610142023 A CN200610142023 A CN 200610142023A CN 1945004 A CN1945004 A CN 1945004A
- Authority
- CN
- China
- Prior art keywords
- voltage tube
- pressure duct
- sheathed casing
- groove
- aforementioned
- 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
Links
Images
Classifications
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- 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
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
Abstract
A high-pressure line, preferably a fuel high-pressure line, is provided with a high-pressure pipe (1) for guiding a fluid to be delivered and a sheathing pipe (2) arranged coaxially around the high-pressure pipe (1). The high-pressure pipe (1) has grooves (3) extending in the longitudinal direction on its outer surface, so that a gap is created between the high-pressure pipe (1) and the sheathing pipe (2), in which gap leaking fuel can escape.
Description
Technical field
The present invention relates to a kind of sheathed pressure duct, and relate in particular to a kind of sheathed fuel high pressure pipeline with integrated leakage guiding element.
Background technique
Especially for giving internal-combustion engine, being a protecting jacket to be set for the high-voltage tube that is arranged in the fuel injection pipe road as fuel conduit necessity of marine engine fueling.This protecting jacket is used to be received in the fuel that leaks out on pressure duct and its adapter piece, and with its receive a collecting container, as in the collet threaded part.
For example German utility model 74 07 951 is known by prior art to this, discloses a kind of dual-layer wall pressure duct.Between pressure duct and sheath pipeline, be provided with a bung flange of making by the flat, plastic band according to prior art, thereby between sheathed casing and high-voltage tube, produce a definite spacing, can discharge by the fuel that oozes out in the pressure duct therein.
Known by prior art in addition, replace spiral plastics middleware, want on the bent position after before the fuel high pressure canal curvature, preferably being fixed on a spacer element that is used for fixing sheathed casing on the high-voltage tube or be fixed on the end.The shortcoming of doing like this is when high-voltage tube, spacer element and sheathed casing are crooked, can cause oval distortion of sheathed casing and sheathed casing one side to be adjacent on spacer element, and cause sheathed casing with respect to the obvious alignment deviation of high-voltage tube thus.Oval distortion and alignment deviation can cause no longer can moving on sheathed casing as the gland nut that link is arranged on the end of pressure duct.When installing, high-voltage tube can cause gland nut one side to be close on the sheathed casing in addition.If apply the screw-down torque of regulation then when mounted,, thereby can cause blow-by because high friction torque desired pressure on the high pressure sealing key is just not enough.In addition, damaged surfaces can cause the damage of circular seal ring, and causes the blow-by on the sealing position between gland nut and the sheathed casing thus.
By the known a kind of structure of prior art, wherein sheathed casing is provided with groove in addition, thereby can obtain passage longitudinally when high-voltage tube and sheathed casing are pegged graft mutually on the outer side surface of high-voltage tube.The shortcoming of this prior art is also to occur the oval distortion of described sheathed casing here.Disadvantageously will use sheath or sheathed casing in addition, sheathed casing needs special processing all the time owing to groove, and brings cost to increase thus.
Summary of the invention
Task of the present invention thus provides the pressure duct of a kind of sealing characteristics with improvement, higher working life and more favourable manufacture cost.
This task solves by independent claims 1 of the present invention.According to the present invention, be provided for carrying the pressure duct that is in the fuel in the high pressure range.Pressure duct has a high-voltage tube in inside, fluid, for example fuel that will need to carry in this high-voltage tube are transported to the ejecting system from a fuel source.Be provided with a sheathed casing, this sheathed casing and high-voltage tube coaxial extension around this high-voltage tube.High-voltage tube has groove on its outer surface, and these grooves are basically along the longitudinal extension of high-voltage tube.
By the pod on the high-voltage tube outer surface, between sheathed casing and high-voltage tube, define a spacing, fuel can flow out therein, and these fuel are to collect on the high-voltage tube outside owing to the leakage on high-voltage tube or its link.Needn't use special processing for sheathed casing, but the semi-finished product that can use a kind of standard are as sheath, this provides cost savings, because after all must carry out special processing as high-voltage tube, because generally need a kind of commercial unavailable pipe cross section here.Can use rotational symmetric sheathed casing by groove is set in addition in high-voltage tube.Especially when the sheathed casing shrink fit on high-voltage tube, thereby can retention gap between sheathed casing and high-voltage tube the time, preferably use rotational symmetric cross section.
Dependent claims is an advantageous modification of the present invention.According to a kind of first improvement project of the present invention, the groove of high-voltage tube has been arranged in the semi-finished product of high-voltage tube.Just these grooves are just made in the manufacture process of the high-voltage tube of seamless stretching.Preferably be evenly distributed on the outer surface of high-voltage tube at these these grooves, and preferably be parallel to each other and the extension of lineal shape ground.
According to another kind of improvement project of the present invention, be connected to the sheathed casing form fit with high-voltage tube.Being connected of this form fit of sheathed casing and high-voltage tube for example can be by realizing the sheathed casing shrink fit on high-voltage tube.Heat sheathed casing for this reason, thereby make sheathed casing to be enclosed within on the high-voltage tube.When sheathed casing cools off, will between sheathed casing and high-voltage tube, form press fit then, thus sheathed casing and the mutual form fit of high-voltage tube link together.Because the connection between sheathed casing and the high-voltage tube, can not produce the space between sheathed casing and high-voltage tube when pressure duct is crooked, this space is in the internal-combustion engine scope under the long stress, just can cause pressure duct to wear and tear too early by vibration constantly.The distortion of sheathed casing also is impossible in addition, because this sheathed casing is protected by the partition that keeps between groove, these partitions abut on the internal surface of sheathed casing now regularly.
Can produce form fit in addition and connect, method is that sheathed casing is enclosed within on the high-voltage tube with Spielpassung, then pressure duct is bent to the shape that it is used to install defined.
According to another kind of improvement project of the present invention, the width of partition is greater than or equal to 2mm, and is less than or equal to 45 ° by the angular range that groove surrounded.
Description of drawings
Describe the present invention in detail with a kind of embodiment of the present invention with reference to the accompanying drawings below.Accompanying drawing illustrates:
Fig. 1 shows the cross section by fuel high pressure pipeline of the present invention;
Fig. 2 is the 3-D view of the cutting plane A-A among Fig. 1.
Embodiment
Fig. 1 shows a fuel high pressure pipeline, and it has a high-voltage tube 1 and a sheathed casing 2.Settled collet threaded part 5 on sheathed casing, it seals with respect to sheathed casing 2 by means of circular seal ring 6.The material of pipe of acting as a fuel preferably uses high tensile steel.Because the fuel high pressure pipe is exposed under the temperature between 150 ℃ and 200 ℃, preferably use sheathed casing and the high-voltage tube made by steel with substantially the same thermal expansion character when engine operation.
Fig. 2 shows the cutting plane A-A by fuel high pressure pipe of the present invention shown in Figure 1, wherein represents groove with reference character 3, and represents partition with reference character 4.The shape of cross section of high-voltage tube can change arbitrarily on the outer surface, as long as keep enough grooves and the enough partitions that are used to support sheathed casing 2.
Reference numerals list
1 high-voltage tube
2 protecting pipes
3 grooves
4 partitions
5 collet threaded parts
6 circular seal rings.
Claims (8)
1. be used for the pressure duct of transfer the fuel under high pressure, have high-voltage tube (1) and the sheathed casing (2) around this high-voltage tube (1) coaxial arrangement of guiding fluid to be carried, it is characterized in that: described high-voltage tube (1) has the groove (3) that extends longitudinally basically on its outer surface.
2. by the described pressure duct of claim 1, it is characterized in that: the groove (3) of described high-voltage tube (1) has been arranged in the semi-finished product of high-voltage tube (1).
3. by each described pressure duct in the aforementioned claim, it is characterized in that: be connected to described sheathed casing (2) form fit with described high-voltage tube (1).
4. by the described pressure duct of claim 3, it is characterized in that: described sheathed casing (2) shrink fit is on described high-voltage tube (1), and perhaps described form fit is connected under the situation of Spielpassung between sheathed casing and the high-voltage tube and produces by crooked.
5. by each described pressure duct in the aforementioned claim, it is characterized in that: the parallel and lineal shape extension of described groove (3), and along the circumferential direction be evenly arranged on the high-voltage tube.
6. by each described pressure duct in the aforementioned claim, it is characterized in that: the width of the partition (4) that keeps between described groove (3) is greater than or equal to 2mm.
7. by each described pressure duct in the aforementioned claim, it is characterized in that: the width of described groove (3) is crossed over the angular range that is less than or equal to 45 °.
8. by each described pressure duct in the aforementioned claim, it is characterized in that: described sheathed casing (2) has rotational symmetric shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005047951.0 | 2005-10-06 | ||
| DE102005047951A DE102005047951B4 (en) | 2005-10-06 | 2005-10-06 | Sheathed pressure line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1945004A true CN1945004A (en) | 2007-04-11 |
Family
ID=37232143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101420231A Pending CN1945004A (en) | 2005-10-06 | 2006-09-30 | High-pressure pipeline with sheath |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2007100960A (en) |
| KR (1) | KR20070038910A (en) |
| CN (1) | CN1945004A (en) |
| DE (1) | DE102005047951B4 (en) |
| FI (1) | FI122594B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074608A (en) * | 2014-06-25 | 2014-10-01 | 广西玉柴机器股份有限公司 | Engine high-pressure oil pipe security fireproof device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009032045A1 (en) * | 2009-07-07 | 2011-01-20 | Elb-Form Gmbh | Double-walled pipe, process for its preparation and its use |
| KR101135321B1 (en) | 2009-11-17 | 2012-04-17 | 주식회사 두원공조 | dual pipe for internal heat exchanger |
| AT509177B1 (en) * | 2009-11-23 | 2013-09-15 | Bosch Gmbh Robert | PRESSURE TUBE FITTINGS FOR COMMON RAIL INJECTION SYSTEM |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7407951U (en) * | 1974-06-06 | Motoren Und Turbinen Union Friedrichshafen Gmbh | Double-walled high pressure line | |
| JPS58161283A (en) * | 1982-03-18 | 1983-09-24 | セイコーエプソン株式会社 | Ic socket with plated pin |
| DE19615935B4 (en) * | 1996-04-22 | 2006-02-09 | BEB Erdgas und Erdöl GmbH | Method and device for transporting wet sour gas |
| US6116290A (en) * | 1999-03-16 | 2000-09-12 | J. Ray Mcdermott, S.A. | Internally insulated, corrosion resistant pipeline |
| EP1794486B1 (en) * | 2004-09-28 | 2011-04-06 | Gall & Seitz Systems GmbH | Double wall pipe |
-
2005
- 2005-10-06 DE DE102005047951A patent/DE102005047951B4/en not_active Expired - Fee Related
-
2006
- 2006-09-30 CN CNA2006101420231A patent/CN1945004A/en active Pending
- 2006-10-02 FI FI20060877A patent/FI122594B/en not_active IP Right Cessation
- 2006-10-04 KR KR1020060097663A patent/KR20070038910A/en active Search and Examination
- 2006-10-05 JP JP2006274009A patent/JP2007100960A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074608A (en) * | 2014-06-25 | 2014-10-01 | 广西玉柴机器股份有限公司 | Engine high-pressure oil pipe security fireproof device |
Also Published As
| Publication number | Publication date |
|---|---|
| FI122594B (en) | 2012-04-13 |
| KR20070038910A (en) | 2007-04-11 |
| JP2007100960A (en) | 2007-04-19 |
| DE102005047951A1 (en) | 2007-04-12 |
| FI20060877A0 (en) | 2006-10-02 |
| DE102005047951B4 (en) | 2010-12-23 |
| FI20060877A (en) | 2007-04-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20070411 |