CN105736855A - CNG conveying hose for gas filling/gas discharge pillar of gas station - Google Patents
CNG conveying hose for gas filling/gas discharge pillar of gas station Download PDFInfo
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- CN105736855A CN105736855A CN201410744288.3A CN201410744288A CN105736855A CN 105736855 A CN105736855 A CN 105736855A CN 201410744288 A CN201410744288 A CN 201410744288A CN 105736855 A CN105736855 A CN 105736855A
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Abstract
A CNG conveying hose for a gas filling/gas discharge pillar of a gas station belongs to the technical field of conveying hoses used for CNG (compressed natural gas) filling equipment and specifically relates to an improvement of a CNG conveying hose structure. The invention provides the hose used for conveying the CNG, wherein the hose has a long service life, good hose body pulse-resistant performance, high resistance to leakage, high resistance to pressure, resistance to static electricity, resistance to aging and resistance to wearing. The hose provided by the invention comprises a medium-resistant conducting layer and is characterized in that the medium-resistant conducting layer is coated by a medium-resistant anti-leakage strong layer, an adhesive layer, a knitted strengthening layer, a rapid conducting layer and an outer protective layer successively from inside to outside; and an end part of the rapid conducting layer is connected to an end part of the medium-resistant conducting layer.
Description
Technical field
The invention belongs to CNG(compressed natural gas) aerating equipment delivery hose technical field, it is specifically related to the improvement of a kind of CNG delivery hose structure.
Background technology
Due to rise of the oil price, compressed natural gas make consumption increasing, the natural gas filling station of each department gets more and more, compressed natural gas pipe make consumption also increasing therewith.
Owing to the pressure relatively big (service pressure is 35Mpa) of compressed natural gas pipe, permeability are strong; thus causing the problem that compressed natural gas pipe exists service life short (less than 3 months); and; the defects such as the bulge of existing natural gas tube surface existence or protective layer decortication, are more prone to cause gas leakage accident.And again owing to service life is short, it is frequent to change, cause that use cost is greatly increased.
The pressure of compressed natural gas pipe is big, and gas flow rate is high, and in filling process, gas and tube wall produce friction can produce electrostatic, if electrostatic can not eliminate in time, has the danger blasted.
Nylon material has significantly high combination property, and hot strength is high, and stretch modulus is big, and heat distortion temperature is high；The molecular structure of nylon and natural gas molecule have a great difference, therefore have good barrier.With the nylon material internal layer as CNG flexible pipe, it is possible to have pressure and hyposmosis effect simultaneously.But nylon material itself is non-conductive, if adding conductive agent in nylon, its osmotic-pressure-tolerant can will significantly decline again.
Summary of the invention
The present invention is aiming at the problems referred to above, it is provided that a kind of long service life, the resistance to pulse behaviors of body are good, impermeable ability is strong, bearing capacity is high, antistatic, resistance to ag(e)ing, the wear-resisting flexible pipe for carrying compressed natural gas.
For solving the problems referred to above; the technical solution used in the present invention is: the present invention includes media-resistant conductive layer, it is characterised in that: it is disposed with the impermeable strength layer of media-resistant, bond layer, braiding enhancement layer, Quick conductive layer and external protection outside media-resistant conductive layer from the inside to the outside；The end of described Quick conductive layer is connected with the end of media-resistant conductive layer.
As a preferred embodiment of the present invention, described media-resistant conductive layer is nylon PA11 or PA12 conductive material；Described media-resistant impermeable layer is nylon PA11 or PA12.
As the another kind of preferred version of the present invention, described braided fiber reinforcing layer includes the first fibrous layer, the second fibrous layer and the 3rd fibrous layer, and material is aramid fiber, carbon fiber or big component polyethylene fibre.
Further, described first fibrous layer uses 130～170 fibers, described second fibrous layer to use 140～180 fibers, and described 3rd fibrous layer uses 150～200 fibers, and described single fiber intensity is not less than 1000N.
As the third preferred version of the present invention, Quick conductive layer material is conduction steel wire, and diameter 0.1～0.3mm, radical is 30～50.
As the 4th kind of preferred version of the present invention, external protection material of the present invention is thermoplastic polyurethane, and surface row has micropore.
Beneficial effects of the present invention.
The present invention, by body internal layer is divided into the design of media-resistant conductive layer and the impermeable strength layer of media-resistant, effectively solves conduction and the contradiction intercepted.Media-resistant conductive layer thickness is 0.3～0.5mm, and resistance value is not more than 1 × 106Ω, the impermeable strength layer thickness of media-resistant is 1.5～2.0mm.
By the design of Quick conductive layer, this layer is connected with media-resistant conductive layer at pipe end, during use, is connected with the external world again through joint, forms the loop of electricity, is quickly derived by the electrostatic of generation.This layer of resistance value is less than 10 Ω.
Because CNG gas has extremely strong permeability, although internal layer employs nylon material, still having a small amount of gas can overflow from tube wall; after long-time use; this portion gas will be assembled between braiding enhancement layer and outer glue-line, thus causing external protection " bulge ", affect the body life-span.After body manufacture completes, get micropore with on special row's eye device glue outside, in order to discharge the gas penetrated on a small quantity.
Present invention can apply to: CNG pressure-reducing station discharge column, CNG automobile gas station the discharge column adding gas column, filling machine and CNG pressure-reducing station on, applied range, strong adaptability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is profile of the present invention.
In accompanying drawing, 1 is media-resistant conductive layer；2 is media-resistant impermeable layer；3 is bond layer；4 it is the first fibrous layer, 5 is the second fibrous layer, 6 is the 3rd fibrous layer；7 is Quick conductive layer；8 external protections；9 is tube wall micropore.
Detailed description of the invention
The present invention includes media-resistant conductive layer 1, it is characterised in that: media-resistant conductive layer 1 is outer is disposed with the impermeable strength layer 2 of media-resistant, bond layer 3, braiding enhancement layer, Quick conductive layer 7 and external protection 8 from the inside to the outside；The end of described Quick conductive layer 7 is connected with the end of media-resistant conductive layer 1；On external protection, row has micropore.
As a preferred embodiment of the present invention, described media-resistant conductive layer 1 is nylon PA11 or PA12 conductive material；The impermeable strength layer 2 of described media-resistant is nylon PA11 or PA12.
As the another kind of preferred version of the present invention, described braided fiber reinforcing layer includes the first fibrous layer the 4, second fibrous layer 5 and the 3rd fibrous layer 6, and material is aramid fiber, carbon fiber or big component polyethylene fibre.
Further, described first fibrous layer 4 uses 130～170 fibers, described second fibrous layer 5 to use 140～180 fibers, described 3rd fibrous layer 6 to use 150～200 fibers, and described single fiber intensity is not less than 1000N.
As the third preferred version of the present invention, Quick conductive layer 7 material is conduction steel wire, and diameter 0.1～0.3mm, radical is 30～50.
As the 4th kind of preferred version of the present invention, external protection 8 material of the present invention is thermoplastic polyurethane, and surface row has micropore.
Bond layer 3 plays the effect connecting media-resistant impermeable layer 2 with braiding enhancement layer, and material is polyurethane adhesive.
The one gas station of the present invention aerating/post CNG delivery hose that loses heart is to carry out as follows.
A, media-resistant conductive layer 1 and media-resistant impermeable strength layer 2 material weighed is inputted in two different extruders respectively, the discharging opening of two extruders is input simultaneously in two composite extruding moulds, extrusion media-resistant conductive layer 1 and the impermeable strength layer 2 of media-resistant simultaneously, media-resistant impermeable layer 2 is coated on outside media-resistant conductive layer 1, and under extrusion temperature, two-layer bonds together naturally.
B, by cooled media-resistant conductive layer 1, media-resistant impermeable strength layer 2 composite pipe body outer surface brushing polyurethane adhesive.
C, by the braider outer surface braided fiber at the impermeable strength layer 2 of media-resistant, braiding 3 layers altogether, single and pipe axially between angle be 50 °～60 °.
D, extrude outer layer elastomeric compound by outer rubber extruding machine, and be coated on the appearance of enhancement layer.
E, with special round device glue rule of surface outside stamp micropore after complete preparation, micropore penetrates outer glue-line, arrives braid, but can not touch media-resistant impermeable layer 2.
Gas station of the present invention aerating/post CNG delivery hose the key technical indexes of losing heart is as follows.
1, inner diameter: φ 25 ± 1mm.
2, flexible pipe bears pressure 35MPa, burst pressure >=140MPa.
It is understandable that, above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to the technical scheme described by the embodiment of the present invention, it will be understood by those within the art that, still the present invention can be modified or equivalent replacement, to reach identical technique effect；Needs are used, all within protection scope of the present invention as long as meeting.
Claims (7)
1. gas station aerating/lose heart post CNG delivery hose; including media-resistant conductive layer (1), it is characterised in that: media-resistant conductive layer (1) is disposed with outward the impermeable strength layer of media-resistant (2), bond layer (3), braiding enhancement layer, Quick conductive layer (7) and external protection (8) from the inside to the outside；The end of described Quick conductive layer (7) is connected with the end of media-resistant conductive layer (1)；On external protection, row has micropore.
2. gas station according to claim 1 aerating/lose heart post CNG delivery hose, it is characterised in that: described media-resistant conductive layer (1) is nylon PA11 or PA12 conductive material；The impermeable strength layer of described media-resistant (2) is nylon PA11 or PA12.
3. gas station according to claim 1 aerating/lose heart post CNG delivery hose, it is characterized in that: described braiding enhancement layer includes the first fibrous layer (4), the second fibrous layer (5) and the 3rd fibrous layer (6), material is aramid fiber, carbon fiber or big component polyethylene fibre.
4. gas station according to claim 3 aerating/lose heart post CNG delivery hose, it is characterized in that: described first fibrous layer (4) uses 130～170 fibers, described second fibrous layer (5) uses 140～180 fibers, described 3rd fibrous layer (6) uses 150～200 fibers, and described single fiber intensity is not less than 1000N.
5. gas station according to claim 2 aerating/lose heart post CNG delivery hose, it is characterised in that: Quick conductive layer (7) material is conduction steel wire, and diameter 0.1～0.3mm, radical is 30～50.
6. gas station according to claim 2 aerating/lose heart post CNG delivery hose, it is characterised in that: external protection (8) material is thermoplastic polyurethane.
7. the gas station aerating/disappointing post CNG delivery hose stated according to claim 1, it is characterized in that: adopt and be prepared from the following method: a, the media-resistant conductive layer (1) weighed is inputted in two different extruders with media-resistant impermeable strength layer (2) material respectively, the discharging opening of two extruders is input simultaneously in two composite extruding moulds, extrusion media-resistant conductive layer (1) and the impermeable strength layer of media-resistant (2) simultaneously, media-resistant impermeable layer (2) is coated on media-resistant conductive layer (1) outside, and under extrusion temperature, two-layer bonds together naturally；
B, by cooled media-resistant conductive layer (1), media-resistant impermeable strength layer (2) composite pipe body outer surface brushing polyurethane adhesive；
C, by the braider outer surface braided fiber at the impermeable strength layer of media-resistant (2), braiding (3) layer altogether, single and pipe axially between angle be 50 °～60 °；
D, extrude outer layer elastomeric compound by outer rubber extruding machine, and be coated on the appearance of enhancement layer；
E, with special round device glue rule of surface outside stamp micropore after complete preparation, micropore penetrates outer glue-line, arrives braid, but can not touch media-resistant impermeable layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744288.3A CN105736855A (en) | 2014-12-09 | 2014-12-09 | CNG conveying hose for gas filling/gas discharge pillar of gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744288.3A CN105736855A (en) | 2014-12-09 | 2014-12-09 | CNG conveying hose for gas filling/gas discharge pillar of gas station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736855A true CN105736855A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744288.3A Pending CN105736855A (en) | 2014-12-09 | 2014-12-09 | CNG conveying hose for gas filling/gas discharge pillar of gas station |
Country Status (1)
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| CN (1) | CN105736855A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106977906A (en) * | 2017-04-13 | 2017-07-25 | 东南大学 | A kind of nano combined flexible pipe of high performance polyurethane and preparation method thereof |
| CN110701396A (en) * | 2019-10-23 | 2020-01-17 | 西安奥若特材料技术有限公司 | Flexible hose and preparation method thereof |
| CN116753368A (en) * | 2023-08-09 | 2023-09-15 | 浙江大学 | Composite pipe capable of preventing hydrogen permeation bulge, design method of composite pipe and hydrogen transmission pipe network |
-
2014
- 2014-12-09 CN CN201410744288.3A patent/CN105736855A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106977906A (en) * | 2017-04-13 | 2017-07-25 | 东南大学 | A kind of nano combined flexible pipe of high performance polyurethane and preparation method thereof |
| CN110701396A (en) * | 2019-10-23 | 2020-01-17 | 西安奥若特材料技术有限公司 | Flexible hose and preparation method thereof |
| CN116753368A (en) * | 2023-08-09 | 2023-09-15 | 浙江大学 | Composite pipe capable of preventing hydrogen permeation bulge, design method of composite pipe and hydrogen transmission pipe network |
| CN116753368B (en) * | 2023-08-09 | 2024-01-16 | 浙江大学 | Composite pipe capable of preventing hydrogen permeation bulge, design method of composite pipe and hydrogen transmission pipe network |
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Application publication date: 20160706 |
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| WD01 | Invention patent application deemed withdrawn after publication |