CN202250529U - High-pressure oil pipe component of diesel engine - Google Patents
High-pressure oil pipe component of diesel engine Download PDFInfo
- Publication number
- CN202250529U CN202250529U CN2011203725090U CN201120372509U CN202250529U CN 202250529 U CN202250529 U CN 202250529U CN 2011203725090 U CN2011203725090 U CN 2011203725090U CN 201120372509 U CN201120372509 U CN 201120372509U CN 202250529 U CN202250529 U CN 202250529U
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- China
- Prior art keywords
- oil pipe
- pipe body
- diesel engine
- sheath
- pressure oil
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- 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
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Abstract
The utility model relates to a diesel engine accessory, and in particular relates to a high-pressure oil pipe component of a diesel engine, wherein the high-pressure oil pipe component of the diesel engine comprises an oil pipe body, a sheath, a compaction washer and a pipe joint nut; the end part of the oil pipe body is subjected to pipe expanding and molding; the external part of pipe expanding end of the oil pipe body is provided with the sheath; the compaction washer is arranged at the connection part of the pipe expanding end and the oil pipe body; the pipe joint nut is arranged at the outer side of the oil pipe body; and the oil pipe is integrally molded. After the structure is adopted, because the oil pipe body is integrally molded and the pipe expanding end of the oil pipe body is provided with the sheath, protection for the oil pipe body is realized, and the compaction washer and the pipe joint nut enable the high-pressure oil pipe to be firm and tight in connection.
Description
Technical field
The utility model relates to the high pressure pipe assembly of a kind of diesel engine part, particularly a kind of diesel engine.
Background technique
Diesel engine high-pressure fuel pipe assembly is high pressure fuel pump is carried a pressure duct from high pressure fuel to the high pressure fuel nozzle.When diesel engine was worked, the injection line assembly was bearing the heavy impulsive load of high pressure fuel and the additional load that diesel vibration is produced.Therefore, the high pressure sealing junction plane that links to each other with high pressure fuel pump, high pressure fuel nozzle of injection line assembly must have enough compressive strengths and locking, antivibration, leakage-preventing ability.
China utility model patent specification CN2620102Y discloses a kind of diesel engine high-pressure fuel pipe assembly; Form by high-pressure oil pipe, lock sleeve, three kinds of parts of coupling nut; The left-handed closely-pitched outside thread in the high-pressure oil pipe two ends of three-D space structure matches with the left-handed closely-pitched internal thread of lock sleeve rigid section; The two ends head is the composite surface of spherical and waist shape face, matches with the taper hole face of spherical with high pressure fuel pump and high pressure fuel nozzle-end, constitutes high pressure resistant sealed faying face; The lock sleeve that is contained in the high-pressure oil pipe two ends be divided into the rigid section that connects with the left-handed fine thread in high-pressure oil pipe end and with the stretch section of high-pressure oil pipe Spielpassung, the exterior edge face of its stretch section is a spherical; The coupling nut endoporus that is sleeved on the high-pressure oil pipe is made up of dextrorotation fine thread and taper hole face, and the dextrorotation outside thread of its dextrorotation internal thread and high pressure fuel pump, high pressure fuel nozzle-end links, and its taper hole face matches with lock sleeve stretch section outer end spherical.
Summary of the invention
The utility model technical issues that need to address provide a kind of diesel engine high-pressure oil pipe assembly simple in structure, robust.
For solving above-mentioned technical problem, the diesel engine high-pressure oil pipe assembly of the utility model comprises oil pipe body, sheath, packing washer and union nut, said oil pipe body end expansion-molding, and said oil pipe body expander end outer installment has sheath; Said expander end and oil pipe body joint are provided with packing washer; Said oil pipe body arranged outside has union nut; Said oil pipe is one-body molded.
The surface of said oil pipe body, sheath, packing washer and union nut is all zinc-plated.
After adopting said structure,, the oil pipe body has been played the effect of protecting because the oil pipe body is one-body molded and oil pipe end expander end is provided with sheath, more firmly tight when packing washer makes that with union nut high-pressure oil pipe is connected.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the sectional view of the utility model diesel engine high-pressure oil pipe assembly.
Among the figure: 1 is the oil pipe body, and 2 is expander end joint, and 3 is the expander end, and 4 is sheath, and 5 is packing washer, and 6 is union nut
Embodiment
Diesel engine high-pressure oil pipe assembly as shown in Figure 1; Comprise oil pipe body 1, sheath 4, packing washer 5 and union nut 6; Said oil pipe body 1 end expansion-molding, said oil pipe body expander end 3 outer installment have sheath 4, can well protect oil pipe body expander end 3 like this.Said expander end 3 is provided with packing washer 5 with oil pipe body joint 2, and said oil pipe body arranged outside has union nut 6, and said packing washer 5 and union nut 6 be oil pipe body 1 fixedly.Said oil pipe is one-body molded, the better tightness of whole like this oil pipe.
The surface of said oil pipe body 1, sheath 4, packing washer 5 and union nut 6 is all zinc-plated, and zinc coat is even, makes that so whole diesel engine high-pressure oil pipe assembly is more sturdy and durable.
High pressure pipe assembly should carry out pressure test, and test pressure should be not less than 1.5 times of working pressure or under the pressure of 100Mpa, maintenance is no less than 30S, oil impregnate must not be arranged, break or produce permanent deformation.
High pressure pipe assembly internal application pressure is not less than the cleaning solution of 1Mpa and rinses well, and its surface cleanness limit value is 5mg/m.
Certainly, other etch-proof metal layers also can be plated in the surface of diesel engine high-pressure oil pipe assembly, and such conversion all drops within the scope of the utility model protection.
Claims (2)
1. a diesel engine high-pressure oil pipe assembly comprises oil pipe body, sheath, packing washer and union nut, it is characterized in that: said oil pipe body end expansion-molding, and said oil pipe body expander end outer installment has sheath; Said expander end and oil pipe body joint are provided with packing washer; Said oil pipe body arranged outside has union nut; Said oil pipe is one-body molded.
2. according to the described diesel engine high-pressure oil pipe of claim 1 assembly, it is characterized in that: the surface of said oil pipe body, sheath, packing washer and union nut is all zinc-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203725090U CN202250529U (en) | 2011-09-28 | 2011-09-28 | High-pressure oil pipe component of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203725090U CN202250529U (en) | 2011-09-28 | 2011-09-28 | High-pressure oil pipe component of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250529U true CN202250529U (en) | 2012-05-30 |
Family
ID=46111784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203725090U Expired - Fee Related CN202250529U (en) | 2011-09-28 | 2011-09-28 | High-pressure oil pipe component of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383992A (en) * | 2011-09-28 | 2012-03-21 | 常州常瑞天力动力机械有限公司 | Diesel engine high-pressure oil pipe assembly |
-
2011
- 2011-09-28 CN CN2011203725090U patent/CN202250529U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383992A (en) * | 2011-09-28 | 2012-03-21 | 常州常瑞天力动力机械有限公司 | Diesel engine high-pressure oil pipe assembly |
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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: 20120530 Termination date: 20120928 |