CN204922264U - Three gratefiring oil pipe - Google Patents

Abstract

The utility model provides a three gratefiring oil pipe, it is equipped with a barrier layer to fire oil pipe, the barrier layer outside is equipped with an enhancement layer, the barrier layer with be equipped with the adhesive linkage between the enhancement layer. Compare with individual layer PA12 of the same type pipe and multilayer PA12 pipe, the advantage of cost is great, compares the tubular product in individual layer PA12, and its material cost advantage is more than 30%, compare in pa6 be the inlayer, pa612 is the skin, middle barrier layer is EVOH's three -layer pipe, its material cost advantage is more than 20%. The utility model overcomes the monomer of pa12 material and the problem that the oligomer was appeared in the past, and then prevent the in -process that uses at the oil tank, body edict be along with oil pump or fuel sprayer are carried to the fuel, and then produce and block up, produces the unable problem that starts or damage power pack of vehicle, has higher practical value.

Description

Three grate firing oil pipes

Technical field

The utility model relates to auto parts and manufactures FIELD OF THE INVENTIONThe, particularly a kind of three grate firing oil pipes.

Background technique

At present, along with improving constantly of social industrialization degree, the problem of environmental pollution also becomes day by day serious, and as one of pollution of atmosphere important factor, the problem of motor vehicle emission is also more and more by social concerns.Comprise motor vehicle exhaust emission and the infiltrative index of oil-fired system is also constantly improved.Under this overall background, vehicle fuel storage system and oil supply system put permeability, anti-Precipitation Characteristics is considered more.So novel built-in oil box structure is used more.Novel built-in fuel tank needs new pipe-line system to coordinate with it.

The fuel tank pipeline multilayer material of current use, mainly with PA12 as internal and external layer.This multi-layer structure is used for most vehicles.And its defect is also apparent.First, PA12 material is commercially more rare, expensive.Supplier is comparatively single.In addition, the precipitation problem of PA12 material is relatively more serious, and the precipitate in the middle of material can cause more serious impact to whole oil-fired system.Oil pump or oil nozzle can be blocked.

The multilayer tubing based on HDPE material of our research and development, fundamentally solves the precipitation problem of material, and is significantly less than PA12 due to HDPE material price, and the cost of material of pipe fitting is decreased.The performance of novel tube reaches the level of original pipe fitting completely in addition.Therefore, need be improved prior art.

Model utility content

The purpose of this utility model is to provide a kind of three grate firing oil pipes, overcomes the monomer of Pa12 material in the past and the problem of oligomer precipitation.And then prevent in the process that uses at fuel tank, body precipitate is transported to oil pump or oil nozzle along with fuel oil, and then produces blocking.Produce the problem that vehicle cannot start or damage power unit.

For solving the problems of the technologies described above, mode of execution of the present utility model provides a kind of three grate firing oil pipes, and described fuel pipe is provided with a barrier layer, is provided with a reinforced layer outside described barrier layer, is provided with adhesive layer between described barrier layer and described reinforced layer.

Described barrier layer is that internal layer is made up of polythene material, and adhesive layer is mesosphere, and described reinforced layer is that the outer polyamide material that adopts forms, and this trilaminate material uses expressing technique shaping by the mode of co-extrusion.

Described polythene material adopts high density polyethylene (HDPE), or cross-linked type polyethylene or high temperature modified polyethylene.

The thickness of described barrier layer must at more than 0.1mm.

The material of described barrier layer is required to be material modified, improves fusing point.

The barrier layer that described fuel pipe inside contacts with fluid is conductive layer.

Described conductive layer is by adding carbon black or carbon nano-tube realization to fuel pipe inner layer material, the ratio of adding described carbon black is 10% ~ 20%, adds the ratio of described carbon nanotube about 6%.

When described fuel pipe uses in fuel tank, reinforced layer material is PA6, and in the use of fuel tank outside, skin is PA610 or PA612.

The tubing of described fuel pipe is light pipe.

The tubing of described fuel pipe is bellows.

The utility model is owing to using above technological scheme, manage with individual layer PA12 of the same type and compare with multilayer PA12 pipe, the advantage of cost is larger, compared to individual layer PA12 tubing, its material cost advantage, more than 30%, is internal layer compared to Pa6, and Pa612 is outer, intermediate barrier layer is three layers of pipe of EVOH, and its material cost advantage is more than 20%.The utility model overcomes the monomer of Pa12 material in the past and the problem of oligomer precipitation, and then prevent in the process of fuel tank use, body precipitate is transported to oil pump or oil nozzle along with fuel oil, and then produce blocking, produce the problem that vehicle cannot start or damage power unit, there is higher use value.

Accompanying drawing explanation

Fig. 1 is the structural representation of three grate firing oil pipes of the present utility model.

Embodiment

For making the purpose of this utility model, technological scheme and advantage clearly, below in conjunction with accompanying drawing, each mode of execution of the present utility model is explained in detail.

Shown in composition graphs 1, three grate firing oil pipes of the present utility model, are not limited only to the pipeline of logical liquid fuel, also comprise the pipeline of the logical gas containing fuel-steam.Here fuel pipe can be high-voltage tube, also can be low-voltage tube, and tubing can be both light pipe, also can be bellows.Fuel pipe is provided with a barrier layer 1, barrier layer 1 is internal layer, a reinforced layer 3 is provided with outside barrier layer 1, reinforced layer 3 is outer, being provided with mesosphere between barrier layer 1 and reinforced layer 3 is adhesive layer 2, it comprises and forming to outer trilaminate material from interior, barrier layer 1 is made up of polythene material, consistent with plastic fuel tank inner layer material, there is good oil resistance, and there is no the precipitation of polyamide, directly fuel oil is contacted in using, mesosphere is adhesive layer 2, reinforced layer 3 adopts polyamide material (nylon) to form, for PA6, it can bear high temperature and strength character is excellent, application is had in the inside and outside pipeline of current fuel tank, this trilaminate material uses expressing technique shaping by the mode of co-extrusion.

According to performance requirement, material itself needs through some special modifications, to reduce the difficulty of technique.Polythene material may adopt high density polyethylene (HDPE) (HDPE), or cross-linked type polyethylene or high temperature modified polyethylene (PERTaccordingtoDIN16833/34), in the selection of each layer wall thickness of tubing, need to consider various factors, such as, if the very thin thickness of inner PE layer and outer 3PA layer is very thick, so, the mechanical property of tubing and thermal characteristics can be very outstanding, and if the cost advantage of the very thin so tubing of inner PE layer very thick and outside PA layer can be clearly.Consider the impact of tubing on the property separated out, inner thickness must be arranged on more than 0.1mm.In order to reduce or prevent fuel tank internal from producing electrostatic.The internal layer 1 that oil pipe inside contacts with fluid can be conductive layer.This can by realizing to fuel pipe internal layer 1 material interpolation carbon black or carbon nano-tube.The words ratio of adding carbon black should 10% to 20%.The words ratio of adding carbon nanotube should about 6%.

The use of PA material can be any one suitable PA material, such as PA6; PA66; PA666; PA1010; PA11; PA12; PA610; PA612; PPA, in the application of fuel tank internal, reinforced layer 3 may be PA6, and in the use of fuel tank outside, reinforced layer 3 may be PA610 or PA612.Good in order to ensure the conjugation between each layer, can adhesive layer be added between barrier layer 1 and adhesive layer 2, between adhesive layer 2 and reinforced layer 3, also can add adhesive layer.

Three grate firing oil pipes of the present utility model, manage with individual layer PA12 of the same type and compare with multilayer PA12 pipe, the advantage of cost is larger, compared to individual layer PA12 tubing, its material cost advantage, more than 30%, is internal layer compared to Pa6, and Pa612 is outer, intermediate barrier layer is three layers of pipe of EVOH, and its material cost advantage is more than 20%.The utility model overcomes the monomer of Pa12 material in the past and the problem of oligomer precipitation, and then prevent in the process of fuel tank use, body precipitate is transported to oil pump or oil nozzle along with fuel oil, and then produce blocking, produce the problem that vehicle cannot start or damage power unit, there is higher use value.

Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiment of the utility model, and in actual applications, various change can be done to it in the form and details, and do not depart from spirit and scope of the present utility model.

Claims (9)

1. three grate firing oil pipes, is characterized in that: described fuel pipe is provided with a barrier layer, are provided with a reinforced layer outside described barrier layer, be provided with adhesive layer between described barrier layer and described reinforced layer.

2. three grate firing oil pipes as claimed in claim 1, it is characterized in that: described barrier layer is that internal layer is made up of polythene material, adhesive layer is mesosphere, and described reinforced layer is that the outer polyamide material that adopts forms, and this trilaminate material uses expressing technique shaping by the mode of co-extrusion.

3. three grate firing oil pipes as claimed in claim 2, is characterized in that: described polythene material adopts high density polyethylene (HDPE), or cross-linked type polyethylene or high temperature modified polyethylene.

4. three grate firing oil pipes as claimed in claim 2, is characterized in that: the thickness of described barrier layer must at more than 0.1mm.

5. three grate firing oil pipes as claimed in claim 2, is characterized in that: the material of described barrier layer is required to be material modified, improve fusing point.

6. three grate firing oil pipes as claimed in claim 2, is characterized in that: the barrier layer that described fuel pipe inside contacts with fluid is conductive layer.

7. three grate firing oil pipes as claimed in claim 2, is characterized in that: when described fuel pipe uses in fuel tank, reinforced layer material is PA6, and in the use of fuel tank outside, skin is PA610 or PA612.

8. three grate firing oil pipes as claimed in claim 2, is characterized in that: the tubing of described fuel pipe is light pipe.

9. three grate firing oil pipes as claimed in claim 2, is characterized in that: the tubing of described fuel pipe is bellows.