CN202493311U - Pressure boost oil return pipe assembly for diesel engine - Google Patents
Pressure boost oil return pipe assembly for diesel engine Download PDFInfo
- Publication number
- CN202493311U CN202493311U CN201220143417XU CN201220143417U CN202493311U CN 202493311 U CN202493311 U CN 202493311U CN 201220143417X U CN201220143417X U CN 201220143417XU CN 201220143417 U CN201220143417 U CN 201220143417U CN 202493311 U CN202493311 U CN 202493311U
- Authority
- CN
- China
- Prior art keywords
- transition
- oil return
- flange
- return pipe
- pipe
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Diaphragms And Bellows (AREA)
- Exhaust Silencers (AREA)
- Joints Allowing Movement (AREA)
Abstract
The utility model discloses a pressure boost oil return pipe assembly for a diesel engine. The pressure boost oil return pipe assembly aims at solving the problems that an existing oil return pipe is poor in sealing performance, prone to be broken and the like. The pressure boost oil return pipe assembly for the diesel engine is mainly formed by a pipe body and a flange and is characterized in that transition pipes are arranged at the front end and the rear end of the pipe body, a metal bellow is arranged in the middle, the transition pipe at the front end of the pipe body is inserted into a hole in the center of the flange, a rear flaring turnup of the pipe body is a toroid face, the transition pipe at the rear end of the pipe body is provided with two sealing grooves, and sealing rings are filled in the grooves. The oil return pipe assembly uses the metal bellow, changes an original rigid structure into flexible connection, avoids coordination and eliminates welding between the flange and a hard pipe and a middle transition section, so as to solve the problems that original rigid coordination is prone to crack, loosen in welding spot and poor in sealing performance, greatly improve product reliability, be convenient to assemble and reduce production cost.
Description
Technical field
The utility model belongs to the machine industry internal-combustion engine and makes the field, relates to a kind of DENG pressurized machine return tube assembly.
Background technique
DENG pressurized machine return tube assembly is used for the lubricating oil return oil circuit of pressurized machine, and an end is connected with pressurized machine through flange, and the other end inserts the engine cylinder-body oilhole.Except that the sealing of routine, heatproof, antirust etc. requires, also need stretchability preferably, when temperature variation, expanding with heat and contract with cold of pipeline can not cause pipeline stress to concentrate, and influences intensity and sealing; Need better antivibration ability simultaneously, when general DENG moves, bring dither for its pipeline, its easy fracture, solder joint are pitched, cause leakage of oil.Existing DENG pressurized machine return tube assembly connects by tightening transition through rubber pipe by the metal lock ring through two hard tubes of high density tube bender processing bending forming; One of them hard tube inserts an end of motor body; For guaranteeing and the housing bore sealing; Adopt interference fit, another hard tube one end adopts welding manner to be connected with flange.This return tube assembly is made up of 6 component, and oil pipe flange and hard tube weld, hard tube and rubber pipe transition position, and leakage of oil hidden danger in three places is arranged; Hard tube inserts shell section owing to adopt interference fit, and assembling is difficulty very.Whole flanged surface is a sealing surface, and for guaranteeing its sealability, it is very high to require the flange surface planeness to require.This technological method complex structure, accuracy of manufacturing requires high, and the more assembling of line seal hidden danger is difficulty very.
The model utility content
The utility model for solve DENG pressurized machine return tube assembly easy-rupturing, solder joint is prone to pitch, sealing hidden danger more problem has proposed a kind of DENG pressurized machine return tube assembly.
In order to reach above-mentioned purpose of design, the technological scheme that the utility model adopts is following:
A kind of DENG supercharging return tube assembly; Mainly be to be made up of body and flange, the forward and backward two ends of said body are transition tube, and the intermediate portion is a metal bellows; The transition tube of body front end is inserted in the flange intermediate hole; Thereafter the enlarging flange is toroidal surface, and the transition tube of body rear end is provided with the two seals groove, in this groove, is filled with seal ring.
Further, after the body rear end is positioned at the two seals groove, also be provided be outside the thrust platform of " protruding " shape.
Further, the transition tube of thrust platform rear end to metal bellows section is a kind of taper hole enlargement structure of progressively transition.
Further, the transition tube of said body front end run through the part of flange be a kind of be the tapered undergauge structure of progressively transition.
The beneficial effect of the said DENG supercharging of the utility model return tube assembly really is: said pressurized machine return tube assembly is owing to adopt the wavy metal pipe manufacturer; Change original rigid construction for flexibly connecting; Improved reliability, and easy to assembly, reduced cost of production.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model.
Embodiment
Below in conjunction with Figure of description the embodiment of the utility model is done detailed description.Obviously, described embodiment only is a part of embodiment of the utility model, and other embodiment that those skilled in the art is obtained under the prerequisite of not paying creative work belongs to the protection domain of the utility model.
The DENG supercharging return tube assembly that the utility model as shown in Figure 1 provides mainly is to be made up of body 1 and flange 5; The forward and backward two ends of said body 1 are transition tube (L1 shown in the figure, L2, L4); L1 can insert the motor body sealed end; This shaped segment has two seal grooves 2, and " O " RunddichtringO 3 that fluorine rubber is processed is housed respectively in the seal groove 2, and two seals groove 2 back-end locations also are provided with the thrust platform 4 of (being appeared like L2 position among the figure) outer " protruding " shape; The transition tube of thrust platform 4 rear ends to metal bellows section is a kind of taper hole enlargement structure of progressively transition; The part (in figure shown in the L4 section) that said body front end transition tube runs through flange for a kind of be the tapered undergauge structure of progressively transition, structure and L2 section are similar, function is identical; The intermediate portion of body 1 is metal bellows (L 3 parts shown in the figure); The enlarging flange was toroidal surface after the transition tube of body front end was inserted in flange 5 intermediate holes, made things convenient for the return tube assembly crooked in assembly process, and this section has the typing flexural property; Be not produce resilience after the bending; Change original rigid construction for flexibly connecting, produce resonance when having avoided engine operation, cause fatigue damage.
As required, said wavy metal tubular portion can adopt 304 or the 316L stainless steel material, wall thickness 0.3mm.This metal bellows adopts the thin-wall stainless steel material.
More than; Be merely the preferred embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field in the technical scope that the utility model discloses, the variation that can expect easily or replacement, all should be encompassed in the utility model protection domain in.Therefore, the protection domain of the utility model should be as the criterion with the protection domain that claim was defined.
Claims (4)
1. DENG supercharging return tube assembly; Mainly be to be made up of body and flange, it is characterized in that: the forward and backward two ends of said body are transition tube, and the intermediate portion is a metal bellows; The transition tube of body front end is inserted in the flange intermediate hole; Thereafter the enlarging flange is toroidal surface, and the transition tube of body rear end is provided with the two seals groove, in this groove, is filled with seal ring.
2. DENG supercharging return tube assembly according to claim 1 is characterized in that: the thrust platform that after the body rear end is positioned at the two seals groove, also is provided with " protruding " shape outside being.
3. DENG supercharging return tube assembly according to claim 2 is characterized in that: the transition tube of said thrust platform rear end to metal bellows section is a kind of taper hole enlargement structure of progressively transition.
4. DENG supercharging return tube assembly according to claim 1 and 2 is characterized in that: the part that the transition tube of said body front end runs through flange be a kind of be the tapered undergauge structure of progressively transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220143417XU CN202493311U (en) | 2012-04-09 | 2012-04-09 | Pressure boost oil return pipe assembly for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220143417XU CN202493311U (en) | 2012-04-09 | 2012-04-09 | Pressure boost oil return pipe assembly for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493311U true CN202493311U (en) | 2012-10-17 |
Family
ID=46999545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220143417XU Expired - Fee Related CN202493311U (en) | 2012-04-09 | 2012-04-09 | Pressure boost oil return pipe assembly for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090681A (en) * | 2023-10-18 | 2023-11-21 | 江苏腾驰科技有限公司 | Supercharger lubrication oil return pipe assembly without brazing seam and processing technology thereof |
-
2012
- 2012-04-09 CN CN201220143417XU patent/CN202493311U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090681A (en) * | 2023-10-18 | 2023-11-21 | 江苏腾驰科技有限公司 | Supercharger lubrication oil return pipe assembly without brazing seam and processing technology thereof |
| CN117090681B (en) * | 2023-10-18 | 2024-02-02 | 江苏腾驰科技有限公司 | Supercharger lubrication oil return pipe assembly without brazing seam and processing technology thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201407423Y (en) | Double-metal composite bend pipe with both metallurgical bonding ends and mechanical bonding middle part | |
| CN201925625U (en) | Metal hose for high-temperature and high-pressure pipeline | |
| CN109915667B (en) | Internal-rotation rolling type sealing joint, light straight-through pipe joint and application thereof | |
| CN201196315Y (en) | Connecting structure of thin-wall copper pipe and thin-wall aluminum pipe | |
| CN202493311U (en) | Pressure boost oil return pipe assembly for diesel engine | |
| CN110242797A (en) | A kind of metal Pipe joining method and its connector | |
| CN203907041U (en) | Spiral corrugated steel pipe with cold-bent angle steel flanges at two ends | |
| CN105351656B (en) | A kind of mechanical multiple tube with connecting hole and preparation method thereof | |
| CN205136879U (en) | Conduit coupling with multiple layer sealing structure | |
| CN206386586U (en) | A kind of bite type connection enlarging formula steel pipe pipe fitting | |
| CN202852234U (en) | Thin-wall stainless steel pipeline socket brazing connecting structure | |
| CN201502812U (en) | Bimetal pipe fitting for composite pipe | |
| CN211449959U (en) | Flange structure for aluminum alloy vacuum system | |
| CN213510826U (en) | Multi-section exhaust manifold | |
| CN201810927U (en) | Axial compensation reinforced connecting structure of corrugated pipe compensator | |
| CN204829000U (en) | Stainless steel pipe fitting extends limit connection structure | |
| CN201288906Y (en) | Steel oil pipe opening flange code | |
| CN106523814B (en) | A kind of bite type connection enlarging formula steel pipe pipe fitting | |
| CN209705507U (en) | A kind of corrosion-resistant heavy caliber four-way pipe | |
| CN110873246A (en) | Flange structure for aluminum alloy vacuum system and manufacturing method thereof | |
| CN2937739Y (en) | Non-welding joint metal hose | |
| CN205226712U (en) | Take compound pipe of mechanical type of connecting hole | |
| CN202349484U (en) | Ring joint corrosion-resistant alloy inner lining combined elbow | |
| CN2522623Y (en) | Diesel engine supercharger oil-returnpipe assembly | |
| CN218992700U (en) | Non-welding corrugated pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Qingfang Inventor after: Yi Bin Inventor before: Hu Qingfang Inventor before: Yi Bin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20130409 |