CN201133524Y - Diesel engine low pressure fuel metal oil conduit sealing structure - Google Patents
Diesel engine low pressure fuel metal oil conduit sealing structure Download PDFInfo
- Publication number
- CN201133524Y CN201133524Y CNU2007203087248U CN200720308724U CN201133524Y CN 201133524 Y CN201133524 Y CN 201133524Y CN U2007203087248 U CNU2007203087248 U CN U2007203087248U CN 200720308724 U CN200720308724 U CN 200720308724U CN 201133524 Y CN201133524 Y CN 201133524Y
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- metal oil
- sealing
- joint
- oil conduit
- pipe
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Abstract
The utility model discloses a sealing structure for a diesel engine low-pressure fuel metal oil pipe, which comprises a pipe nut, a joint and a sealing rubber sleeve. The pipe nut is arranged on the diesel engine low-pressure fuel metal oil pipe. The joint is arranged at the end of the metal oil pipe. The pipe nut and the joint form a sealing cavity on the outer wall of the metal oil pipe. The sealing rubber sleeve is arranged inside the sealing cavity. A lining sleeve is arranged between the outer wall of the metal oil pipe and the inner hole wall of the joint. The sealing structure of the diesel engine low-pressure fuel metal oil pipe of the utility model has the advantages of good process and favorable sealing performance, and meanwhile has the advantages of good quality of the appearance, the high temperature and low temperature resistance, strong vibration absorption, high reliability, etc., and has good effect after being used in the diesel engines particularly vehicle diesel engines.
Description
Technical field
The utility model relates to a kind of sealing configuration of diesel low-voltage fuel metal oil conduit, relate in particular to a kind of in, heavy road with or the sealing configuration of diesel engine used not on road low-voltage fuel pipeline.
Background technique
At present, in the low-voltage fuel pipeline of diesel engine, general metal tube or rubber pipe or the nylon tube of adopting, the structure of radial type pipe coupling, gasket seal and hinge bolt is extensively adopted in its sealing that connects component, perhaps adopts sphere, the conical surface seal structure of spherical spinning in pipe joint.Along with appearance quality and the Safety performance increasingly stringent to diesel engine, there is potential safety hazard in the metal pipe oil pipe that adopts above-mentioned sealing configuration because of not possessing vibration-damping function fracture easily in the motor using process; Adopt the rubber of above-mentioned sealing configuration or the oil pipe of nylon pipe in the motor using process, to wear out easily, break, also have potential safety hazard because of not possessing the high temperature resistance environmental functional; In other words, adopt the oil pipe of present sealing configuration difficult to take into account the shaping design that possesses vibration-damping function and to adapt to hot environment work.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of and has good manufacturability, possess vibration-damping function, make the oil pipe design that can be shaped reach the diesel low-voltage fuel line seal structure of optimizing the motor appearance quality and can adapting to hot environment work.
The utility model provides a kind of sealing configuration of diesel low-voltage fuel metal oil conduit, comprise pipe nut, joint and sealing rubber cover, described pipe nut is installed on the diesel low-voltage fuel metal oil conduit, described joint is located at the end of described metal oil conduit, described pipe nut and described joint form a Seal cage on the metal oil conduit outer wall, be provided with described sealing rubber cover in described Seal cage.
Between the inner hole wall of the outer wall of described metal oil conduit and described joint, be provided with lining.
The rate of holding tightly of described sealing rubber cover and metal oil conduit cylindrical is 95%～100%.
The pack completeness of described sealing rubber cover is 80～95% scopes, and compressibility is about 15～25%.
The material of described sealing rubber cover adopts nitrile butadiene rubber, or acrylate rubber, or fluorine rubber.Described pipe nut and joint adopt steel material or copper material.
The utility model belongs to the rubber ends surface seal structure, and employing straight-through type pipeline connecting structure, promptly assembling pipe nut, caulking gum and lining on metal oil conduit carries out enlarging to the oil pipe aperture then and gets loose from oil pipe to prevent above-mentioned part, plays the effect of axially locating simultaneously.Connect with pipe joint at last, the space in the middle of pipe nut and the pipe joint is sealed by compression seal rubber.The effect of lining is to fill up the space that pipe joint endoporus and oil-pipe external wall is formed because of the oil pipe enlarging, thereby avoids caulking gum difference distortion influence sealing.Caulking gum can adopt nitrile butadiene rubber, or adopts acrylate rubber, or adopts fluorine rubber.
Owing to adopt above-mentioned technological scheme, the utlity model has following beneficial effect:
1, the application of metal oil conduit possesses the possibility that is shaped and designs, and appearance quality is good, and high temperature resistant.
2, the application of caulking gum both can possess the function of sealing, possessed the function of vibration damping simultaneously, met the Environmental Conditions on motor; And the rebound elasticity of rubber possesses and repeats nonexpondable effect.
3, each component structural is simple, and material easily selects, good manufacturability.
4, adopt straight-through type pipeline connecting structure, the fuel flow resistance is little, meets the usability requirement of diesel engine more.
5, structure itself is high temperature resistant, possesses vibration-damping function, good reliability again.
Description of drawings
Fig. 1 is the schematic representation of the sealing configuration of the utility model diesel low-voltage fuel metal oil conduit.
The 1-metal oil conduit; 2-manages nut; The 3-sealing rubber cover; The 4-lining; The 5-joint.
Embodiment
As shown in Figure 1, the sealing configuration of the utility model diesel low-voltage fuel metal oil conduit, comprise pipe nut 2, joint 5 and sealing rubber cover 3, pipe nut 2 is installed on the diesel low-voltage fuel metal oil conduit 1, joint 5 is located at the end of metal oil conduit 1, pipe nut 2 forms a Seal cage with joint 5 on metal oil conduit 1 outer wall, be provided with described sealing rubber cover 3 in Seal cage.Between the inner hole wall of the outer wall of metal oil conduit 1 and joint 5, be provided with lining 4.
Sealing rubber cover 3 is 95%～100% with the rate of holding tightly of metal oil conduit 1 cylindrical.The pack completeness of sealing rubber cover 3 is 80%～95% scope, and compressibility is about 15～25%.The material of sealing rubber cover 3 adopts nitrile butadiene rubber, or acrylate rubber, or fluorine rubber.Pipe nut 2 and joint 5 adopt steel material or copper material.
The utility model is under the condition that guarantees circularity that the former tubing of metal oil conduit is possessed and outer surface quality, put pipe nut (its interior hole end surface is chamfering not), put sealing rubber cover then, the diameter of bore of sealing rubber cover is about 95～100% of metal oil conduit external diameter under nature, to guarantee to possess certain rate of holding tightly, the outside diameter of sealing rubber cover than pipe nut thread path little a little, do not damage rubber to guarantee initial loading timing thread; Refill afterwards to mix lining and enlarging is carried out in the oil pipe aperture and get loose from oil pipe to prevent above-mentioned part, the enlarging of metal oil conduit to be being advisable smaller or equal to 120 °, and the too big bad enlarging of manufacturability is easy to crack, and the too little then inclined to one side length of flared section should not be located.Metal oil conduit, sealing rubber cover, pipe nut and lining have constituted new oil pipe assembly.Constituted a kind of sealing configuration by connecting at last with joint.Crucial is need the seal action of sealing rubber cover be guaranteed, promptly guarantee in the length of nature lower seal rubber sleeve slightly longer than the axial length of Seal cage, make that the pack completeness of (and can not push up at the end) caulking gum is 80～95% scopes when the pipe nut screwing clamping is on joint, compressibility is about 15～25%, and caulking gum can play the effect of sealing to several sealing surfaces and can guarantee to repeat repeatedly to use.
The assembly process of this structure is summarized as follows:
Metal oil conduit puts pipe nut (hole end surface is without chamfering in it), puts sealing rubber cover then, refills afterwards and mixes lining and enlarging is carried out in the oil pipe aperture, can constitute a kind of sealing configuration by connecting with joint at last.
It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technological scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technological scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.
Claims (6)
1, a kind of sealing configuration of diesel low-voltage fuel metal oil conduit, comprise pipe nut, joint and sealing rubber cover, described pipe nut is installed on the diesel low-voltage fuel metal oil conduit, described joint is located at the end of described metal oil conduit, described pipe nut and described joint form a Seal cage on the metal oil conduit outer wall, it is characterized in that: be provided with described sealing rubber cover in described Seal cage.
2, according to the sealing configuration of the described diesel low-voltage fuel metal oil conduit of claim 1, it is characterized in that: between the inner hole wall of the outer wall of described metal oil conduit and described joint, be provided with lining.
3, according to the sealing configuration of claim 1 or 2 described diesel low-voltage fuel metal oil conduits, it is characterized in that: the rate of holding tightly of described sealing rubber cover and metal oil conduit cylindrical is 95%～100%.
4, according to the sealing configuration of claim 1 or 2 described diesel low-voltage fuel metal oil conduits, it is characterized in that: the pack completeness of described sealing rubber cover is 80～95% scopes, and compressibility is about 15～25%.
5, according to the sealing configuration of claim 1 or 2 described diesel low-voltage fuel metal oil conduits, it is characterized in that: the material of described sealing rubber cover adopts nitrile butadiene rubber, or acrylate rubber, or fluorine rubber.
6, according to the sealing configuration of claim 1 or 2 described diesel low-voltage fuel metal oil conduits, it is characterized in that: described pipe nut and joint adopt steel material or copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203087248U CN201133524Y (en) | 2007-12-29 | 2007-12-29 | Diesel engine low pressure fuel metal oil conduit sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203087248U CN201133524Y (en) | 2007-12-29 | 2007-12-29 | Diesel engine low pressure fuel metal oil conduit sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133524Y true CN201133524Y (en) | 2008-10-15 |
Family
ID=40061796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203087248U Expired - Fee Related CN201133524Y (en) | 2007-12-29 | 2007-12-29 | Diesel engine low pressure fuel metal oil conduit sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133524Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135098A (en) * | 2015-09-30 | 2015-12-09 | 甘志宏 | Sealing structure for inserted pipeline hoop locking connection |
-
2007
- 2007-12-29 CN CNU2007203087248U patent/CN201133524Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135098A (en) * | 2015-09-30 | 2015-12-09 | 甘志宏 | Sealing structure for inserted pipeline hoop locking connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20131229 |