CN110513226A - A kind of double wall common rail pipe - Google Patents
A kind of double wall common rail pipe Download PDFInfo
- Publication number
- CN110513226A CN110513226A CN201910928257.6A CN201910928257A CN110513226A CN 110513226 A CN110513226 A CN 110513226A CN 201910928257 A CN201910928257 A CN 201910928257A CN 110513226 A CN110513226 A CN 110513226A
- Authority
- CN
- China
- Prior art keywords
- pipe
- common rail
- hole
- outer tube
- inner tube
- 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
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Classifications
-
- 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
- F02M55/025—Common rails
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Fuel oil is revealed in high-pressure oil pipe in order to solve the problems, such as not recycling caused by common rail pipe fixation structure is unreasonable in the prior art, the present invention provides a kind of double wall common rail pipe, and the pipe including connecting with high-pressure oil pipe connects, inner tube and outer tube；Wherein, inner tube is arranged in outer tube, the connection setting of Guan Jieyu inner tube；It is characterized in that, further including for pipe to be connect to the fixation kit being sealingly disposed on outer tube；The pipeline being connected to fuel tank is provided on the fixation kit.The present invention is clear that common rail pipe and high-pressure oil pipe seal situation, while installing and easy to maintenance, greatly improves working efficiency；Common rail pipe may be implemented and high-pressure oil pipe poor sealing or high-pressure oil pipe rupture occurs or common rail tracheal rupture forms abnormal leakage, abnormal leakage fuel oil is collected, and return to fuel tank；Mounting blocks are required to substantially reduce with inner tube concentricity, labor intensity is reduced, improves work efficiency.
Description
Technical field
The invention belongs to technical field of internal combustion engines, are related to a kind of double wall common rail pipe.
Background technique
With energy crisis and increasingly sharpening for environmental pollution and increasingly mentioning to the requirement of power device automatization level
Height, to diesel engine performance, more stringent requirements are proposed, and the development of a variety of power technologies also proposes diesel engine superiority
Higher challenge.Low energy consumption, low emission, high power density and the intelligent main spy for having become current and future diesel engine
Sign.Improving diesel engine performance is in terms of improving fuel qualities, optimizing combustion process and take emission aftertreatment three with automatically controlled
The comprehensive performance of versatility Optimization of Diesel Engine realizes that high-efficiency cleaning burning not only needs rationalization's air inlet, optimization combustion chamber
Structure, it is often more important that need fuel injection system timing, level pressure, quantitative injection high pressure fuel.Therefore, Electrocontrolled high-pressure common rail
The height of oil spout technical level has become the important table of the important symbol and product core competitiveness of measuring diesel engine advance
It is existing, and common rail pipe is the important component of electronic control system, main function is to establish rail pressure, inhibit rail pressure fluctuation.
Wherein patent " the double-deck common rail pipe " (CN 207740109) proposes common rail pipe, although meeting requirement, there are many deficiencies,
Be mainly manifested in: abnormal leakage hydraulic fluid port can only recycle the fuel oil of the double-deck common rail pipe internal leakage, can not recycle high-pressure oil pipe inner tube
Rupture or seal it is bad cause leakage fuel oil.
Summary of the invention
Combustion is revealed in high-pressure oil pipe in order to solve not recycling caused by common rail pipe fixation structure is unreasonable in the prior art
The problem of oil, the present invention provide a kind of double wall common rail pipe.
To achieve the goals above, the present invention use the specific scheme is that a kind of double wall common rail pipe, including with high pressure oil
The pipe of pipe connection connects, inner tube and outer tube；Wherein, inner tube is arranged in outer tube, the connection setting of Guan Jieyu inner tube；Its feature exists
In further including for pipe to be connect to the fixation kit being sealingly disposed on outer tube；It is provided on the fixation kit and is connected to fuel tank
Pipeline.
The utility model has the advantages that the present invention is clear that common rail pipe and high-pressure oil pipe seals situation, while installation and maintenance side
Just, working efficiency is greatly improved；Common rail pipe may be implemented and poor sealing or high-pressure oil pipe rupture or common rail occurs in high-pressure oil pipe
Tracheal rupture forms abnormal leakage, abnormal leakage fuel oil is collected, and return to fuel tank；Mounting blocks and inner tube concentricity are required significantly
It reduces, reduces labor intensity, improve work efficiency.
Detailed description of the invention
Fig. 1 is the main schematic diagram of structure of the invention.
Fig. 2 is enlarged drawing of the invention.
Fig. 3 is mounting blocks structural schematic diagram.
1, pipe connects in figure, 2, bolt, 3, mounting blocks, 4, annular gasket, 5, inner tube, 6, outer tube, 7, fixed block, 8, O-ring,
9, O-ring, 10, O-ring.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
It is as shown in Figures 1 to 3: to plant the double-deck common rail pipe, the pipe connects 1 and connect with fixed block 7, and the pipe connects 1 and annular gasket 4
Connection, the pipe connect 1 and connect with fixed block 7, and the fixed block 7 is connect by bolt 2 with mounting blocks 6, the mounting blocks 3 and pipe
It connects and is sealed between 1 by O-ring 8, the mounting blocks 3 are sealed with outer tube 6 by O-ring 9, and said inner tube 5 and outer tube 6 pass through O
Type circle 10 seals, and mounting blocks 3, inner tube 5, outer tube 6, pipe connect 1 and form seal chamber by O-ring, is internally provided with axially extending bore
1A, can collect that poor sealing or high-pressure oil pipe rupture occur in common rail pipe and high-pressure oil pipe or common rail tracheal rupture forms abnormal let out
Abnormal leakage fuel oil is collected in leakage.
5 embedded SMA actuators of said inner tube are stored at through-hole for high pressure fuel, and the oil-through-hole 5A of ladder is processed on top, are led to
The upper end of oilhole 5A connects 1, annular gasket 4 with pipe and connect, and high pressure fuel is transported to high-pressure oil pipe, the lower end of oil-through-hole 5A with it is interior
The perforation of 5 inner cavity of pipe, the lower end oil-through-hole 5A two sides machined and form band between O-ring annular groove setting O-ring 9, with outer tube 6,
Prevent leakage fuel oil.
Outer tube 6 is multistage composition, forms seal band with inner tube 5, mounting blocks 3.The mounting blocks 3 are hexahedron,
The outer tube stepped hole 6A for cooperating with outer tube 6 is provided in left and right sides；It is provided on its top surface and connects the logical of 1 cooperation with pipe
Hole 6B；Through-hole 6B's is uniformly distributed on peripheries with threaded hole；The via hole 6C being connected to fuel tank is provided on the front of mounting blocks 3；Mounting blocks 3
The connecting hole 6D for being additionally provided in the plane of via hole 6C and connecting with common rail pipe bracket is set.
Fixed block 7 is crimped on the fixation hole that pipe connects on step on 1 and is provided with bolt 2；Bolt 2 and through-hole 6B's
The threaded hole 3A of surrounding cooperates.
Annular gasket 4 is cylindrical body, and through-hole is processed into centre, and annular groove is processed into inside, is mainly used for pipe and connects and install
Sealing between block, it is ensured that concentricity between Guan Jieyu mounting blocks, convenient accurate installation positioning.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can change or replacement easily, belong to this hair
Within bright protection scope.Therefore it is subject to the protection scope in claims described in protection scope of the present invention.
Claims (6)
1. a kind of double wall common rail pipe, the pipe including connecting with high-pressure oil pipe connects (1), inner tube (5) and outer tube (6)；Wherein, interior
(5) setting is managed in outer tube (6), pipe connects (1) and is connected to setting with inner tube (5)；It is characterized in that, further including for pipe to be connect (1)
The fixation kit being sealingly disposed on outer tube (6)；The pipeline being connected to fuel tank is provided on the fixation kit.
2. a kind of double wall common rail pipe according to claim 1, it is characterised in that: the pipe connects (1) by multistage diameter
The cylindrical body composition being gradually reduced, is internally provided with axially extending bore (1A)；Pipe connects logical on (1) larger diameter end and inner tube (5)
Oilhole (5A) connection setting.
3. a kind of double wall common rail pipe according to claim 1, the pipe connect the circle that (1) is gradually reduced by multistage diameter
Cylinder composition, is internally provided with axially extending bore (1A)；Pipe connects (1) larger diameter end and is connected to the oil-through-hole (5A) on inner tube (5)
Setting, it is characterised in that: the fixation kit includes mounting blocks (3), fixed block (7) and bolt (2)；
Wherein, the mounting blocks (3) are hexahedron, and the outer tube for cooperating with outer tube (6) is provided in left and right sides
Stepped hole (6A)；The through-hole (6B) that (1) cooperation is connect with pipe is provided on its top surface；Through-hole (6B) is uniformly distributed on peripheries with threaded hole
(3A)；The via hole (6C) being connected to fuel tank is provided on the front of mounting blocks (3)；
Fixed block (7) is crimped on the fixation hole that pipe connects on step on (1) and is provided with bolt (2)；Bolt (2) and through-hole
The threaded hole (3A) of the surrounding of (6B) cooperates.
4. a kind of double wall common rail pipe according to claim 3, it is characterised in that: pipe connects and also sets between (1) and inner tube (5)
It is equipped with annular gasket (4).
5. a kind of double wall common rail pipe according to claim 3, it is characterised in that: via hole (6C) is arranged in mounting blocks (3)
The connecting hole (6D) connecting with common rail pipe bracket is additionally provided in plane.
6. a kind of double wall common rail pipe according to claim 3, it is characterised in that: pipe connects between (1) and mounting blocks (3),
Sealing ring is provided between mounting blocks (3) and outer tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928257.6A CN110513226A (en) | 2019-09-28 | 2019-09-28 | A kind of double wall common rail pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928257.6A CN110513226A (en) | 2019-09-28 | 2019-09-28 | A kind of double wall common rail pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110513226A true CN110513226A (en) | 2019-11-29 |
Family
ID=68632818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910928257.6A Pending CN110513226A (en) | 2019-09-28 | 2019-09-28 | A kind of double wall common rail pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513226A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727652A (en) * | 2020-12-07 | 2021-04-30 | 无锡威孚高科技集团股份有限公司 | Double-layer common rail pipe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09264227A (en) * | 1996-03-28 | 1997-10-07 | Nissan Diesel Motor Co Ltd | Cylinder head for accumulator fuel injection device and accumulator fuel injection device using it |
| JP2000320426A (en) * | 1999-05-14 | 2000-11-21 | Usui Internatl Ind Co Ltd | High pressure fuel injection pipe for diesel engine |
| US20050166899A1 (en) * | 2004-01-30 | 2005-08-04 | Shamine David M. | High pressure line connection strategy and fuel system using same |
| CN203809179U (en) * | 2014-04-30 | 2014-09-03 | 上海通和船用设备有限公司 | High pressure fuel pipe for railway locomotives |
| CN108350843A (en) * | 2015-08-24 | 2018-07-31 | 诺瓦工厂股份公司 | Common rail distributes track |
| CN207740109U (en) * | 2017-12-31 | 2018-08-17 | 无锡威孚高科技集团股份有限公司 | The double-deck common rail pipe |
| CN209244708U (en) * | 2018-11-07 | 2019-08-13 | 河南柴油机重工有限责任公司 | A kind of safety guard of electronic control system peculiar to vessel |
| CN210799204U (en) * | 2019-09-28 | 2020-06-19 | 河南柴油机重工有限责任公司 | Double-wall common rail pipe |
-
2019
- 2019-09-28 CN CN201910928257.6A patent/CN110513226A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09264227A (en) * | 1996-03-28 | 1997-10-07 | Nissan Diesel Motor Co Ltd | Cylinder head for accumulator fuel injection device and accumulator fuel injection device using it |
| JP2000320426A (en) * | 1999-05-14 | 2000-11-21 | Usui Internatl Ind Co Ltd | High pressure fuel injection pipe for diesel engine |
| US20050166899A1 (en) * | 2004-01-30 | 2005-08-04 | Shamine David M. | High pressure line connection strategy and fuel system using same |
| CN203809179U (en) * | 2014-04-30 | 2014-09-03 | 上海通和船用设备有限公司 | High pressure fuel pipe for railway locomotives |
| CN108350843A (en) * | 2015-08-24 | 2018-07-31 | 诺瓦工厂股份公司 | Common rail distributes track |
| CN207740109U (en) * | 2017-12-31 | 2018-08-17 | 无锡威孚高科技集团股份有限公司 | The double-deck common rail pipe |
| CN209244708U (en) * | 2018-11-07 | 2019-08-13 | 河南柴油机重工有限责任公司 | A kind of safety guard of electronic control system peculiar to vessel |
| CN210799204U (en) * | 2019-09-28 | 2020-06-19 | 河南柴油机重工有限责任公司 | Double-wall common rail pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727652A (en) * | 2020-12-07 | 2021-04-30 | 无锡威孚高科技集团股份有限公司 | Double-layer common rail pipe |
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