CN205190095U - A double sphere oil pipe head device for high pressure fuel injection pipe - Google Patents
A double sphere oil pipe head device for high pressure fuel injection pipe Download PDFInfo
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- CN205190095U CN205190095U CN201520939836.8U CN201520939836U CN205190095U CN 205190095 U CN205190095 U CN 205190095U CN 201520939836 U CN201520939836 U CN 201520939836U CN 205190095 U CN205190095 U CN 205190095U
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- fuel injection
- pressure fuel
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Abstract
The utility model relates to a double sphere oil pipe head device for high pressure fuel injection pipe, it contains preceding sphere and back sphere, connects cooperation department at the head and the fuel oil system of high pressure fuel injection pipe and sets up preceding sphere, sets up the back sphere at the head of high pressure fuel injection pipe and high pressure fuel pipe's nut contact department, containing the packing ring, falling the head construction of sheath, then at packing ring, the back of falling the sheath and manage nut contact department and set up sphere afterwards. Packing ring or sheath are assembled with the head when the head cold -heading. The utility model discloses an actively the effect is: when there is the deviation angle of incidence slightly, also can install smoothly, sealed face can normally seal, the sphere is sealed to make the seal pressure of head further improve.
Description
[technical field]
The utility model relates to high pressure fuel injection Manifold technology field, specifically, is a kind of two sphere tubing head part devices for high pressure fuel injection pipe.
[background technique]
High-pressure oil pipe, as one of the important spare part of ejecting system, " blood vessel " of motor is become in row, the sealability that the joint of its head and fuel injection system is assembled is extremely important, once there is sealing problem, just there will be fuel leakage, motor normally cannot work the potential safety hazard such as even to blast.
Current GB and iso standard mesohigh oil pipe head are cone seal, and the maximum defect of conical seal (contact) face is that high-pressure oil pipe is very high to the condition on border, and main point position, end or joint angle slightly deviation, will produce leakage.And generally, high-pressure oil pipe is after the parts such as oil-fired system install, finally just install, now the cumulative error of other Assembly of the parts of motor is formed all, once boundary bias will have a huge impact the sealing of conical nose, desirable sealing effect cannot be reached under high pressure, finally cause fuel leakage.
Along with the Abgasgesetz of increasingly stringent, diesel spray increasing pressure is high, and this proposes the challenge of requirements at the higher level to the sealability of high pressure fuel injection pipe.Current existing injection line conical nose cannot meet the seal request of present motor to high-pressure oil pipe.
[model utility content]
The purpose of this utility model is to solve the deficiency in existing high-pressure oil pipe head design, provides a kind of two sphere tubing head part devices for high pressure fuel injection pipe; Mainly through arranging sphere in the position of the forward and backward sealing surface of high-pressure oil pipe head, namely the position of former conical seal (contact) face and nut seal face two place arrange spherical.
The purpose of this utility model is achieved through the following technical solutions:
A kind of two sphere tubing head part devices for high pressure fuel injection pipe, it comprises front sphere and rear sphere, sphere before the head of high pressure fuel injection pipe and oil-fired system joint cooperation place are arranged, sphere after the head of high pressure fuel injection pipe and the nut contacting point of high-pressure oil pipe are arranged.
At the head construction containing packing ring, sheath, then it is sphere after packing ring, the back side of falling sheath and pipe nut contacting point are arranged.Packing ring or sheath when head cold-heading and head assemble.
Front sphere and rear sphere are with one heart, or two centers of circle keep throw of eccentric A to be 0.1 ~ 20mm on the same axis.
The equal diameters of front sphere and rear sphere, or the difference of diameter is between 0.1 ~ 100mm.Make high-pressure oil pipe when installation, the face of head and junction contacts, face two place contacted with nut are sphere.
Front sphere is connected by the boss in head body with rear sphere, sharp-pointed position, angle rounding.
Described front sphere, front sphere acts on the sealing surface that head mates with the joint of oil-fired system, its bulb diameter 5 ~ 15mm.
Described rear sphere, rear sphere acts on sealing surface that head mates with the pipe nut of high-pressure oil pipe (wherein comprising the sealing surface that packing ring or the back side of falling sheath are mated with high-pressure oil pipe pipe nut), its bulb diameter 5 ~ 100mm.
Compared with prior art, good effect of the present utility model is:
(1) when reference angle slightly deviation time, also can install smoothly, sealing surface can normally seal.
(2) ball face sealing makes the voltage endurance capability of head improve further.
[accompanying drawing explanation]
Fig. 1 common homocentric sphere head portion schematic diagram;
Fig. 2 common eccentric ball head head schematic diagram;
Fig. 3 band falls the homocentric sphere head portion schematic diagram of sheath;
Fig. 4 band falls the eccentric ball head head schematic diagram of sheath;
The homocentric sphere head portion schematic diagram of Fig. 5 belt washer;
The eccentric ball head head schematic diagram of Fig. 6 belt washer;
Fig. 7 drum type homocentric sphere head portion schematic diagram;
Fig. 8 drum type eccentric ball head head schematic diagram;
The throw of eccentric of the front sphere of description of reference numerals: A and rear sphere.
[embodiment]
The embodiment of a kind of two sphere tubing head part devices for high pressure fuel injection pipe of the utility model is below provided.
Embodiment 1
Arranging high-pressure oil pipe interface mounting point three-dimensional data and high-pressure oil pipe two ends last positional deviation Δ X is 0.7mm, hold last reference angle deviation 1.2 degree, sealing station before high-pressure oil pipe, namely oil pipe head and oil-fired system joint cooperation place arrange front sphere, and bulb diameter is Φ 8mm.Rear sealing station, namely oil pipe head and pipe nut place arrange rear sphere, and bulb diameter is Φ 8.5mm, and two centre ofs sphere are on same axis, and two centre of sphere throw of eccentric are 0.5mm.Boss, the tubing of two spheres and head all use straight line and arc transition.As Fig. 1, shown in 2.
Be assemblied on test stand by high-pressure oil pipe after machining, system pressure is set to 200Mpa, pressurize 30s, and result is: high-pressure oil pipe is without oil impregnate, leakage oil condition.The favorable sealing property of the two sphere head of high-pressure oil pipe.
Embodiment 2
Arranging high-pressure oil pipe interface mounting point three-dimensional data and high-pressure oil pipe two ends last positional deviation Δ X is 0.9mm, hold last reference angle deviation 1.4 degree, the rail of oil-fired system is welding rail structure, sealing station before high-pressure oil pipe, namely oil pipe head and oil-fired system joint cooperation place arrange front sphere, and bulb diameter is Φ 8mm.Rear sealing station, namely oil pipe falls sheath and pipe nut place and arranges rear sphere, and bulb diameter is Φ 64mm, and two balls are concentric.Sheath and the cold-heading of oil pipe head are assembled.As Fig. 3, shown in 4.
Be assemblied on test stand by high-pressure oil pipe after machining, system pressure is set to 180Mpa, pressurize 30s, and result is: high-pressure oil pipe is without oil impregnate, leakage oil condition.The favorable sealing property of the two sphere head of high-pressure oil pipe.
Embodiment 3
Arranging high-pressure oil pipe interface mounting point three-dimensional data and high-pressure oil pipe two ends last positional deviation Δ X is 0.9mm, hold last reference angle deviation 1.6 degree, sealing station before high-pressure oil pipe, namely oil pipe head and oil-fired system joint cooperation place arrange front sphere, and bulb diameter is Φ 8mm.Rear sealing station, namely oil pipe packing ring and pipe nut contacting point arrange rear sphere, and bulb diameter is Φ 34mm, and two balls are concentric.Packing ring and the cold-heading of oil pipe head are assembled.As Fig. 5, shown in 6.
Be assemblied on test stand by high-pressure oil pipe after machining, system pressure is set to 160Mpa, pressurize 30s, and result is: high-pressure oil pipe is without oil impregnate, leakage oil condition.The favorable sealing property of the two sphere head of high-pressure oil pipe.
Embodiment 4
Arranging high-pressure oil pipe interface mounting point three-dimensional data and high-pressure oil pipe two ends last positional deviation Δ X is 1.0mm, hold last reference angle deviation 1.7 degree, sealing station before high-pressure oil pipe, namely oil pipe head and oil-fired system joint cooperation place arrange front sphere, and bulb diameter is Φ 8mm.Rear sealing station, namely oil pipe head and pipe nut place arrange rear sphere, and bulb diameter is Φ 56mm, and two centre ofs sphere are on same axis, and two centre of sphere throw of eccentric are 2.3mm.Boss, the tubing of two spheres and head all use straight line and arc transition.As Fig. 7, shown in 8.
Be assemblied on test stand by high-pressure oil pipe after machining, system pressure is set to 180Mpa, pressurize 30s, and result is: high-pressure oil pipe is without oil impregnate, leakage oil condition.The favorable sealing property of the two sphere head of high-pressure oil pipe.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, without departing from the concept of the premise utility; can also make some improvements and modifications, these improvements and modifications also should be considered as in protection domain of the present utility model.
Claims (6)
1. the two sphere tubing head part devices for high pressure fuel injection pipe, it is characterized in that, it comprises front sphere and rear sphere, sphere before the head of high pressure fuel injection pipe and oil-fired system joint cooperation place are arranged, sphere after the head of high pressure fuel injection pipe and the nut contacting point of high-pressure oil pipe are arranged.
2. a kind of two sphere tubing head part devices for high pressure fuel injection pipe as claimed in claim 1, is characterized in that, front sphere and rear sphere are with one heart, or two centers of circle keep throw of eccentric A to be 0.1 ~ 20mm on the same axis.
3. a kind of two sphere tubing head part devices for high pressure fuel injection pipe as claimed in claim 1, it is characterized in that, the equal diameters of front sphere and rear sphere or the difference of diameter are between 0.1 ~ 100mm.
4. a kind of two sphere tubing head part devices for high pressure fuel injection pipe as claimed in claim 1, it is characterized in that, front sphere is connected by the boss in head body with rear sphere, sharp-pointed position, angle rounding.
5. a kind of two sphere tubing head part devices for high pressure fuel injection pipe as claimed in claim 1, is characterized in that, described front sphere, its bulb diameter 5 ~ 15mm.
6. a kind of two sphere tubing head part devices for high pressure fuel injection pipe as claimed in claim 1, is characterized in that, described rear sphere, its bulb diameter 5 ~ 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520939836.8U CN205190095U (en) | 2015-11-20 | 2015-11-20 | A double sphere oil pipe head device for high pressure fuel injection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520939836.8U CN205190095U (en) | 2015-11-20 | 2015-11-20 | A double sphere oil pipe head device for high pressure fuel injection pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205190095U true CN205190095U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520939836.8U Active CN205190095U (en) | 2015-11-20 | 2015-11-20 | A double sphere oil pipe head device for high pressure fuel injection pipe |
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| CN (1) | CN205190095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288788A (en) * | 2017-06-30 | 2017-10-24 | 东风（十堰）汽车管业有限公司 | A kind of design method of high-pressure oil pipe structure |
-
2015
- 2015-11-20 CN CN201520939836.8U patent/CN205190095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288788A (en) * | 2017-06-30 | 2017-10-24 | 东风（十堰）汽车管业有限公司 | A kind of design method of high-pressure oil pipe structure |
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