CN207740109U - The double-deck common rail pipe - Google Patents
The double-deck common rail pipe Download PDFInfo
- Publication number
- CN207740109U CN207740109U CN201721927305.2U CN201721927305U CN207740109U CN 207740109 U CN207740109 U CN 207740109U CN 201721927305 U CN201721927305 U CN 201721927305U CN 207740109 U CN207740109 U CN 207740109U
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- CN
- China
- Prior art keywords
- inner tube
- outer tube
- high pressure
- common rail
- mounting blocks
- 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.)
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Abstract
The utility model is related to a kind of common rail pipes, specifically a kind of double-deck common rail pipe, including inner tube, inner tube one end is installed by rail pressure sensor, the other end installs pressure limiting valve, the circumferential surface of inner tube is uniformly arranged the high pressure fuel outlet of tube cavity in several connections in an axial direction, outer tube is arranged in said inner tube, ring cavity is formed between inner tube and outer tube, on outer tube a mounting blocks are respectively provided with corresponding to each high pressure fuel exit, it is mounted on high pressure connection on each mounting blocks, the oil inlet connection high pressure fuel outlet of high pressure connection, the mounting blocks are equipped with the leakage hole of connection ring cavity.The utility model product is made of outer tube and inner tube, and outer tube can protect inner tube；The use of outer tube end sealing ring can effectively prevent fuel oil and leak；The abnormal leakage hole of design can recycle the fuel oil of the double-deck common rail pipe internal leakage；The bilayer common rail pipe is simple in structure, easy to maintenance, securely and reliably.
Description
Technical field
The utility model is related to a kind of common rail pipe, specifically a kind of double-deck common rail pipe.
Background technology
With the raising of people's environmental protection consciousness, various countries have carried out increasingly strict limit to the emission regulation of diesel engine
System.High pressure co-rail system can make diesel engine meet emission regulation demands.Wherein, common rail duct member is the weight of high pressure co-rail system
Want component part.Its effect is to establish high fuel pressure, surge suppressing.But meanwhile as high voltage component, each sealing
All there is the risks of fuel leakage in face.Fuel leakage can be such that working environment deteriorates, or even cause fire, belong to it is dangerous because
Element, it should eliminate comprehensively.Current common rail pipe structure does not take appropriate measures for fuel leakage situation.
Invention content
For the utility model in view of the above-mentioned problems, providing a kind of double-deck common rail pipe, which can effectively recycle common rail plumber
Make the fuel oil leaked in the process, it is ensured that the working environment of diesel engine.
According to the technical solution of the utility model：Rail pressure sensing is installed in a kind of bilayer common rail pipe, including inner tube, inner tube one end
Device, the other end install pressure limiting valve, and the circumferential surface of inner tube is uniformly arranged the high pressure fuel of tube cavity in several connections in an axial direction
Outlet, it is characterised in that：It is arranged outer tube in said inner tube, forms ring cavity between inner tube and outer tube, corresponds on outer tube each high
It is respectively provided with a mounting blocks at compression ignition oil export, high pressure connection is mounted on each mounting blocks, the oil inlet of high pressure connection connects
Logical high pressure fuel outlet, the mounting blocks are equipped with the leakage hole of connection ring cavity.
The outer tube, which corresponds to one side end of rail pressure sensor, as a further improvement of the utility model, has closing in
Portion, the outer tube other end are through-hole structure.
The mounting blocks are fixed by guider screw and inner tube as a further improvement of the utility model,.
The outer tube is multi-segment structure as a further improvement of the utility model, between every section of outer tube and mounting blocks
Sealing ring is set.
The utility model has technical effect that：The utility model product is made of outer tube and inner tube, and outer tube can be internal
Pipe is protected；The use of outer tube end sealing ring can effectively prevent fuel oil and leak；The abnormal leakage hole of design can return
Receive the fuel oil of the double-deck common rail pipe internal leakage；The bilayer common rail pipe is simple in structure, easy to maintenance, securely and reliably.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is sectional view along A-A in Fig. 1.
Specific implementation mode
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
In Fig. 1, including inner tube 1, outer tube 2, mounting blocks 3, rail pressure sensor 4, pressure limiting valve 5, high pressure connection 6, guider screw
7, leakage hole 8, ring cavity 9, sealing ring 10 etc..
As shown in Figure 1, the utility model is a kind of double-deck common rail pipe, including inner tube 1, rail pressure sensing is installed in 1 one end of inner tube
Device 4, the other end install pressure limiting valve 5, and the circumferential surface of inner tube 1 is uniformly arranged the high pressure of several 1 inner cavities of connection inner tube in an axial direction
Fuel outlet is arranged outer tube 2 in said inner tube 1, forms ring cavity 9 between inner tube 1 and outer tube 2, corresponds to each high pressure on outer tube 2
It is respectively provided with a mounting blocks 3 at fuel outlet, high pressure connection 6, the oil inlet of high pressure connection 6 are mounted on each mounting blocks 3
It is connected to high pressure fuel outlet, the mounting blocks 3 are equipped with the leakage hole 8 of connection ring cavity 9.
It is through-hole structure that outer tube 2, which corresponds to 4 one side end of rail pressure sensor to have closing in portion 2.1,2 other end of outer tube,.
Mounting blocks 3 are fixed by guider screw 7 and inner tube 1, and outer tube 2 is multi-segment structure, every section of outer tube 2 and mounting blocks 3 it
Between be respectively provided with sealing ring 10.
Inner tube 1 in the utility model product is an entirety, and rail pressure sensor 4 is installed in one end, and the other end installs pressure limiting
Valve 5, the uniformly distributed high pressure fuel outlet in centre are each to export a corresponding mounting blocks 3 and high pressure connection 6.Mounting blocks 3 are by being oriented to spiral shell
Nail 7 is fixed with inner tube 1.
Outer tube 2 is mounted on outside inner tube 1, is made of multistage, and O shape rubber seal ring recess is designed in end.Outer tube 2 and inner tube
1, mounting blocks 3 and high pressure connection 6 collectively constitute low pressure seal system.On the one hand such structure can not be hit with protection inner tube
Deng injury；On the other hand, the ring cavity 9 formed between inner tube 1 and outer tube 2 can be used for storing inner tube 1 and 6 sealing surface of high pressure connection
Between the fuel oil that leaks.When leak fuel oil storage to it is a certain amount of when recycled by abnormal leakage hole 8.
The utility model product by mounting blocks 3 fix on a diesel engine, by high pressure connection 6 and high pressure co-rail system its
Its members.
At work, inner tube 1 stores high pressure fuel, using itself changeless volume, to due to high-pressure oil pump component
Pulsation fuel feeding and electric-controlled fuel injector component interrupted injection caused by high pressure fuel pressure oscillation inhibited.If high pressure sealing
Face leaks, and the fuel oil of leakage can be stored in low pressure seal intracavitary, be recycled by abnormal leakage hole.
Claims (4)
1. a kind of bilayer common rail pipe, including inner tube（1）, inner tube（1）One end is installed by rail pressure sensor（4）, other end installation pressure limiting
Valve（5）, inner tube（1）Circumferential surface be uniformly arranged in an axial direction several connection inner tube（1）The high pressure fuel of inner cavity exports, special
Sign is：Said inner tube（1）On be arranged outer tube（2）, inner tube（1）With outer tube（2）Between form ring cavity（9）, outer tube（2）Upper correspondence
It is respectively provided with a mounting blocks in each high pressure fuel exit（3）, each mounting blocks（3）On be mounted on high pressure connection（6）, high
Crimp head（6）Oil inlet connection high pressure fuel outlet, the mounting blocks（3）It is equipped with connection ring cavity（9）Leakage hole（8）.
2. bilayer common rail pipe as described in claim 1, it is characterised in that：The outer tube（2）Corresponding to rail pressure sensor（4）One
Side end has closing in portion（2.1）, outer tube（2）The other end is through-hole structure.
3. bilayer common rail pipe as described in claim 1, it is characterised in that：The mounting blocks（3）Pass through guider screw（7）With it is interior
Pipe（1）It is fixed.
4. bilayer common rail pipe as described in claim 1, it is characterised in that：The outer tube（2）For multi-segment structure, every section of outer tube
（2）With mounting blocks（3）Between be respectively provided with sealing ring（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927305.2U CN207740109U (en) | 2017-12-31 | 2017-12-31 | The double-deck common rail pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927305.2U CN207740109U (en) | 2017-12-31 | 2017-12-31 | The double-deck common rail pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207740109U true CN207740109U (en) | 2018-08-17 |
Family
ID=63121274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721927305.2U Active CN207740109U (en) | 2017-12-31 | 2017-12-31 | The double-deck common rail pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207740109U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513226A (en) * | 2019-09-28 | 2019-11-29 | 河南柴油机重工有限责任公司 | A kind of double wall common rail pipe |
| 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 |
| CN113389661A (en) * | 2021-07-27 | 2021-09-14 | 淄柴机器有限公司 | Natural gas common rail pipe for engine |
| CN113931763A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | High-pressure common rail pipe |
-
2017
- 2017-12-31 CN CN201721927305.2U patent/CN207740109U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513226A (en) * | 2019-09-28 | 2019-11-29 | 河南柴油机重工有限责任公司 | A kind of double wall common rail pipe |
| 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 |
| CN113389661A (en) * | 2021-07-27 | 2021-09-14 | 淄柴机器有限公司 | Natural gas common rail pipe for engine |
| CN113931763A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | High-pressure common rail pipe |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |