AU2021104289A4 - Manufacturing method of natural gas cylinder and natural gas cylinder - Google Patents

Manufacturing method of natural gas cylinder and natural gas cylinder Download PDF

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Publication number
AU2021104289A4
AU2021104289A4 AU2021104289A AU2021104289A AU2021104289A4 AU 2021104289 A4 AU2021104289 A4 AU 2021104289A4 AU 2021104289 A AU2021104289 A AU 2021104289A AU 2021104289 A AU2021104289 A AU 2021104289A AU 2021104289 A4 AU2021104289 A4 AU 2021104289A4
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Australia
Prior art keywords
layer
bamboo strip
winding
natural gas
gas cylinder
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Ceased
Application number
AU2021104289A
Inventor
Yongzhi Guo
Rui Han
Taibi He
GuangZhao Li
Ming Li
Yuheng Sun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Decameter Sail Science And Technology Co Ltd
Sinoma Science & Technology Chengdu Co Ltd
Xihua University
Original Assignee
Chengdu Decameter Sail Science And Tech Co Ltd
Sinoma Science & Tech Chengdu Co Ltd
Xihua University
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Priority to AU2021104289A priority Critical patent/AU2021104289A4/en
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Publication of AU2021104289A4 publication Critical patent/AU2021104289A4/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/04—Protecting sheathings
    • F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/08—Coating on the layer surface on wood layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0609—Straps, bands or ribbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0624—Single wall with four or more layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F17C2203/067—Synthetics in form of fibers or filaments helically wound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2154—Winding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/232—Manufacturing of particular parts or at special locations of walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a manufacturing method of natural gas cylinder and natural gas cylinder, and relates to the technical field of fuel gas storage. It is realised by following steps: firstly, coating a bonding coordination layer on the outer surface of the inner lining; Then winding the outer surface of the bonding coordination layer with bamboo strip, and the bamboo strip coheres on the bonding coordination layer to form a bamboo strip composite layer; Then an outer protective layer is coated on the outer surface of the bamboo strip composite layer, and the outer protective layer is solidified to protect the bamboo strip composite layer. Compared with the prior technology, the manufacturing method of the natural gas cylinder provided by the invention adopts the step of winding the outer surface of the bonding coordination layer with the bamboo strip to form the bamboo strip composite layer, so that the natural gas cylinder with advantages of light weight, good insulation and corrosion resistance, no stress defect distribution, excellent pressure bearing and deformation resistance, low manufacturing cost, high safety, energy conservation and environmental protection can be manufactured. 1/1 FIGURES 100 110 115 120 130 113 140 111 Figure 1 Figure 2 Coating bonding coordination layer on S1 the outer surface of inner lining Winding the outer surface of the bonding Si coordination layer with the bamboo strip to form the bamboo strip composite layer Si Coating an outer protective layer on the surface of the bamboo strip composite laver Figure 3

Description

1/1
FIGURES
100
110 115 120 130 113 140
111
Figure 1 Figure 2
Coating bonding coordination layer on S1 the outer surface of inner lining
Winding the outer surface of the bonding Si coordination layer with the bamboo strip to form the bamboo strip composite layer
Si Coating an outer protective layer on the surface of the bamboo strip composite laver
Figure 3
Manufacturing method of natural gas cylinder and natural gas cylinder
TECHNICAL FIELD
The invention relates to the technical field of fuel gas storage, in particular to a
manufacturing method of a natural gas cylinder and the natural gas cylinder.
BACKGROUND
Compressed natural gas cylinder is an important energy storage equipment for gas
vehicles and a high-pressure container for storing compressed natural gas. This kind of
high-pressure container containing flammable and explosive gases is a pressure container
with explosive danger. At present, carbon fiber winding aluminum alloy cylinders, steel
cylinders and glass fiber circumferentially winding steel cylinders have been used in the
storage of compressed natural gas for vehicles in China. Although carbon fiber winding
aluminum alloy cylinder has a merit of light weight and high strength, its interlaminar
shear performance is poor, and its strength decreases obviously after impact; In addition,
the cost of carbon fiber is high, so the application of carbon fiber wound aluminum alloy
gas cylinder is not less; Although steel gas cylinders and glass fiber circumferentially
winding steel gas cylinders is of low cost, it has large mass and working pressure is
generally lower than 20MPa, and contains less gas.
At present, these CNG cylinders for vehicles mainly adopt glass fiber (GF), aramid fiber
(NF) and carbon fiber (CF) winding process. Although it can store a certain amount of
compressed natural gas, it is of high risk factor, short service time and high cost due to
bulkiness, low working pressure, great strength reduction after impact,.
In view of this, it is particularly important to come up with a manufacturing method for
natural gas cylinders which are safe, practical, energy-saving, environment-friendly and low-cost. What's more, natural gas cylinders are particularly important in the production of gas cylinders.
SUMMARY
The invention is intended for providing a manufacturing method for a natural gas
cylinder. With the method, the natural gas cylinder with advantages of light weight, good
insulation and corrosion resistance, no stress defect distribution, excellent pressure
bearing and deformation resistance, low manufacturing cost, strong safety, energy
conservation and environmental protection can be manufactured.
The invention is realized by adopting the following technical scheme:
The manufacturing method of natural gas cylinder includes: coating a bonding
coordination layer on the outer surface of the inner lining; Winding the outer surface of
the bonding coordination layer with bamboo strip to form a bamboo strip composite
layer; An outer protective layer is coated on the outer surface of the bamboo strip
composite layer.
Further, in the step of coating the bonding coordination layer on the outer surface of the
inner lining, the bonding coordination layer is made of epoxy resin and epoxy curing
agent or phenolic resin and phenolic curing agent.
Further, in the step of coating the bonding coordination layer on the outer surface of the
inner lining, the thickness of the bonding coordination layer is in the range of 0 .1 mm to
.4 mm.
Further, the steps of winding the outer surface of the bonding coordination layer with
bonding bamboo strip to form a bamboo strip composite layer comprise: helically
winding the outer surface of the bonding coordination layer with bamboo strip to form a first winding layer; Circumferentially winding a position outside the bonding coordination layer with bamboo strip corresponding to the cylindrical body of the inner lining layer to form a second winding layer; The first winding layer and the second winding layer are alternately arranged and combined to form the bamboo strip composite layer.
Further, the steps of spirally winding the outer surface of the bonding coordination layer
with bamboo strip to form a first winding layer comprise: helically winding outside the
bonding coordination layer along a first direction with bamboo strip; Helically winding
outside the bonding coordination layer along a second direction with bamboo strip; The
first direction is opposite to the second direction.
Further, the degree of included angle between the first direction and the axial direction of
the bonding coordination layer is in the range of 13 degrees to 58 degrees.
Further, the step of spirally winding the outer surface of the bonding coordination layer
with bamboo strip to form the first winding layer, the thickness of the first winding layer
is in the range of 2 mm to 5 mm.
Further, in the step of circumferentially winding a position outside the bonding
coordination layer with bamboo strip corresponding to the cylindrical body of the inner
lining layer to form the second winding layer, the thickness of the second winding layer
is in the range of 5 mm to 8 mm.
Further, in the step of coating an outer protective layer on the outer surface of the bamboo
strip composite layer, the outer protective layer is made of epoxy resin and epoxy curing
agent.
A natural gas cylinder is manufactured by the method above. The manufacturing method
is consisted of the followings: coating a bonding coordination layer on the outer surface
of the inner lining; Winding the outer surface of the bonding coordination layer with
bamboo strip to form a bamboo strip composite layer; An outer protective layer is coated
on the outer surface of the bamboo strip composite layer.
The manufacturing method of the natural gas cylinder and the natural gas cylinder
provided by the invention have the following beneficial effects:
The manufacturing method of the natural gas cylinder provided by the invention
comprises the following steps: firstly, coating a bonding coordination layer on the outer
surface of an inner lining layer; Then winding the outer surface of the bonding
coordination layer with bamboo strip, and the bamboo strip coheres on the bonding
coordination layer to form a bamboo strip composite layer; Then an outer protective layer
is coated on the outer surface of the bamboo strip composite layer, and the outer
protective layer is solidified to protect the bamboo strip composite layer. Compared with
the prior technolosy, the manufacturing method of the natural gas cylinder provided by
the invention adopts the step of winding the outer surface of the bonding coordination
layer with the bamboo strip to form the bamboo strip composite layer, so that the natural
gas cylinder with the advantages of light weight, good insulation and corrosion
resistance, no stress defect distribution, excellent pressure bearing and deformation
resistance, low manufacturing cost, strong safety, energy conservation and environmental
protection can be manufactured.
The natural gas cylinder described in the invention is produced by adopting
manufacturing method of natural gas cylinder and has the merit of light weight, good insulation and corrosion resistance, no stress defect distribution, excellent pressure bearing and deformation resistance, low manufacturing cost, high safety, energy conservation and environmental protection.
BRIEF DESCRIPTION OF THE FIGURES
In order to explain the technical scheme of the embodiments of the present invention
more clearly, the following figures which are necessary to use in the embodiments will be
briefly introduced. It should be understood that the following figures only show some
embodiments of the present invention, so they should not be regarded as limiting the
scope. For ordinary technicians in the field, other related figures can be obtained
according to these figures without making creative efforts.
Fig. 1 is a structural diagram of the natural gas cylinder provided by the first embodiment
of the present invention;
Fig. 2 is a structural diagram of the inner lining in the natural gas cylinder provided by
the first embodiment of the present invention;
Fig. 3 is a flow chart of the manufacturing method of the natural gas cylinder according
to the second embodiment of the present invention.
Marked number: 100- natural gas cylinder; 110- inner lining; 111- bottom section of
cylinder; 113- cylindrical body; 115- mouth section of cylinder; 120-bonding
coordination layer; 130-bamboo strip composite layer; 140-outer protective lay.
Adhesion coordination layer; 130- bamboo strip composite layer; 140- outer protective
layer.
DESCRIPTION OF THE INVENTION
In order to make the purpose, technical scheme and advantages of the embodiments of the
present invention clearer, the technical scheme of the embodiments of the present
invention will be described clearly and completely with reference to the figures in the
embodiments of the present invention. Obviously, the described embodiments are part of
the embodiments of the present invention, not all of them. Generally, the components of
the embodiments of the present invention described and illustrated in the figures herein
may be arranged and designed in various different configurations.
Therefore, the following detailed description of the embodiments of the invention
provided in the figures is not intended to limit the scope of the claimed invention, but
only represents selected embodiments of the invention. Based on the embodiments of the
present invention, all other embodiments obtained by ordinary technicians in the field
without making creative efforts are subjected to the scope of protection of the present
invention.
It should be noted that similar reference numerals and letters indicate similar items in the
following figures, so once an item is defined in one figure, it is not necessary to further
define and explain it in the following figures.
In the description of the present invention, it should be noted that the orientation or
position relationships indicated by the terms "inner", "outer", "upper", "lower" and
"horizontal" are based on the orientation or position relationships shown in the figures, or
the orientation or position relationships that the product of the present invention is usually
placed in use, only for convenience of describing the present invention and simplifying
the description, but not for indicating or implying that the referred devices or elements must be located, constructed and operated in specific orientation. In addition, the terms
"first", "second", "third", etc. are only used to distinguish descriptions, and cannot be
understood as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise
specified and defined, the terms "set", "connected", "installed" and "connected" should be
understood in a broad sense. For example, the connection may take any form of the
followings: rigid, detachable, integrated, mechanical, electric, direct, indirection through
medium, intra-connection between two elements. For those of ordinary skill in the field,
the specific meanings of the terms above in the present invention can be understood in
specific context.
Some embodiments of the present invention will be described in detail with reference to
the accompanying figures. The features in the embodiments below may be combined with
each other without conflict with each other.
Embodiment 1
With reference to Fig. 1, the embodiment of the present invention provides a natural gas
cylinder 100 for storing compressed natural gas as an important energy storage device of
a gas automobile to provide power for the gas automobile. It has the advantages of light
weight, good insulation and corrosion resistance, no stress defect distribution, strong
bearing and deformation resistance, low manufacturing cost, high safety, energy saving
and environmental protection, and long service life.
The natural gas cylinder 100 includes the inner lining layer110, the bonding coordination
layer 120, the bamboo strip composite layer 130 and the outer protective layer 140. The
bonding coordination layer 120 is adhered outside the inner lining layer 110, and the bamboo strip composite layer 130 winds around the bonding coordination layer120; The bonding coordination layer 120 is used for bonding and fixing the bamboo strip composite layer 130, preventing the bamboo strip composite layer 130 from loosening, and has certain buffering capacity in vibration-resistance and shatter-proof. The bamboo strip composite layer 130 is used to support for the inner lining 110 and prevent the inner lining 110 from being deformed under pressure. The outer protective layer 140 is coated outside the bamboo strip composite layer 130 to protect the bamboo strip composite layer
130 and prevent the bamboo strip composite layer 130 from being oxidized by air, and
the outer protective layer 140 has a certain buffering capacity in vibration-resistance and
shatter-proof.
With reference to Fig. 2, it is worth noting that the inner lining 110 includes bottom
section of cylinder 111, a cylindrical section 113 and a mouth section of cylinder 115.
The bottom section of cylinder 111 undergoes integrally forming with the mouth section
of cylinder 115 through the cylindrical section 113, and the mouth section of cylinder 115
is equipped with threads for detachable connection with the gas vehicle. In this
embodiment, the inner lining layer 110 is made of aluminum alloy, and the inner lining
layer 110 is manufactured through demoulding with a mould, and then undergoes
cleaning and waxing to meet the design requirements. The outer diameter of the inner
lining layer 110 is 145 mm, and the minimum designed wall thickness of the cylindrical
body 113 is 2 .5 mm. The whole natural gas cylinder 100 has a diameter of 162 mm, a
length of 511 mm and a nominal working pressure of 25 MPa.
It should be noted that the bamboo strip composite layer 130 is formed by winding of
bamboo strip. In this embodiment, the selected bamboo strip undergoes advanced bamboo processing and environmental protection such as drying, preservation, pest control and moth proofing, which makes bamboo suitable for gas cylinder manufacture and meet the design requirements of 100 pressure class of natural gas cylinders.
In the process of making bamboo strip, bamboo are cut to form bamboo strip, and then
degreased, cleaned and dried to keep the water content in the bamboo strip within a
certain range to meet the design requirements of water content, and then the bamboo strip
are connected by lining cloth to form the whole bamboo strip. It is worth noting that the
width of bamboo strip ranges from 5mm to 15mm and the thickness ranges from 0.15mm
to 0.5mm. In this embodiment, the width of bamboo strip is 10mm and the thickness of
bamboo strip is 0.25mm.
The natural gas cylinder 100 described in the present invention includes the inner lining
layer 110, the bonding coordination layer 120, the bamboo strip composite layer 130 and
the outer protective layer 140. The bonding coordination layer 120 is adhered outside the
inner lining layer 110, and the bamboo strip composite layer 130 winds around the
bonding coordination layerl20.The outer protective layer is coated around bamboo strip
composite layer 130. Compared with the existing technology, the natural gas cylinder 100
has the advantages of light weight, good insulation and corrosion resistance, no stress
defect distribution, excellent pressure bearing and deformation resistance, low
manufacturing cost, high safety, energy conservation and environmental protection and
longer service life.
Embodiment 2
Referring to Fig. 3, an embodiment of the present invention provides a manufacturing
method of a natural gas cylinder which is intended for manufacture of natural gas cylinder 100. The natural gas cylinder 100 has the advantages of light weight, good insulation and corrosion resistance, no stress defect distribution, excellent pressure bearing and deformation resistance, low manufacturing cost, strong safety, energy saving, environmental protection and long service life. The natural gas cylinder 100 can store compressed natural gas, and can be used as an important energy storage device for gas vehicles to provide power for gas vehicles.
The manufacturing method of a natural gas cylinder includes the following steps:
Step S101: the bonding coordination layer 120 is coated on the outer surface of the inner
lining 110.
Specifically, the bonding coordination layer 120 is made of epoxy resin and epoxy curing
agent or phenolic resin and phenolic curing agent and has good bonding performance and
it can also play the role of buffer shock absorption. In this embodiment, the bonding
coordination layer 120 is made of bisphenol a epoxy resin and epoxy curing agent.
It is worth noting that the thickness of the bonding coordination layer 120 ranges from
0.1 mm to 0.4 mm. In this embodiment, the thickness of the bonding coordination layer
120 is 0.25 mm, but it is not limited to this. The thickness of the bonding coordination
layer 120 can also be 0.1 mm or 0.4 mm.
Step 102: A bamboo strip winds around the outer surface of the bonding coordination
layer 120 to form a bamboo strip composite layer 130.
It is worth noting that in the winding process of bamboo strip, two adjacent layers of
bamboo strip are bonded by resin mixture, and the gaps between bamboo strip are sealed
after resin curing, so as to improve the connection strength of bamboo strip, enhance the
anti-deformation ability and prevent the bamboo strip from coming loose.
Specifically, Step S102 consists of two steps:
Step S1021: helically winding the outer surface of the bonding coordination layer 120
with bamboo strip to form a first winding layer.
It is worth noting that the thickness of the first winding layer is in the range of 2 mm to 5
mm. In this embodiment, the thickness of the winding layer is 3 mm, but it is not limited
to this. The thickness of the first winding layer may also be 2 mm or 5 mm.
It should be noted that, in the spiral winding process, the center line of the bonding
coordination layer 120 is taken as an axis, and is wound from the bottom section of
cylinder 111 to the mouth section of cylinder 115 passing through the cylindrical body
section 113, or from the mouth section of cylinder 115 to the bottom section of cylinder
111 passing through the cylindrical body section 113.
In detail, S1021 consists of two steps:
Step S10211: helically winding outside the bonding coordination layer 120 along a first
direction with bamboo strip;
Step S10212: Helically winding outside the bonding coordination layer along a second
direction with bamboo strip; The first direction is opposite to the second direction.
Specifically, the included angle between the first direction and the axial direction of the
bonding coordination layer 120 is in the range of 13 degrees to 58 degrees, and the first
direction is opposite to the second direction. In this embodiment, the angle between the
first direction and the axial direction of the bonding coordination layer 120 is 35 degrees
while the angle between the second direction and the axial direction of the bonding
coordination layer 120 is -35 degrees but is not limited to this. The angle between the first
direction and the axial direction of the bonding coordination layer 120 may also be 13 degrees or 58 degrees. It is worth noting that in the spiral winding process, firstly, bamboo strip are used to wind around starting from one end of bottom section of cylinder
111 away from the mouth section of cylinder 115, passing through from the cylindrical
body 113, to the mouth section of cylinder 115 along the first direction and the free end
of the bamboo strip is located at the end of the mouth section of cylinder 115 away from
the bottom section of cylinder 111. Then, the bamboo strip winds back along the second
direction; At this time, the free end of the bamboo strip returns to the initial position, and
the two winding bamboo strip are oppositely arranged.
S1022: circumferentially winding a position outside the bonding coordination layer with
bamboo strip corresponding to the cylindrical body of the inner lining layer to form a
second winding layer.
Specifically, the thickness of the second winding layer ranges from 5mm to 8mm. In this
embodiment, the thickness of the second winding layer is 7mm, but it is not limited to
this. The thickness of the second winding layer can also be 5mm or 8mm.
It is worth noting that in the process of circumferential winding, the bamboo strip is
vertically wound outside the first winding layer at a position corresponding to the
cylindrical body 113 of the inner lining layer 110 with the center line of the bonding
coordination layer 120 as the axis.
Step S1023: the first winding layer and the second winding layer are alternately arranged
and combined to form the bamboo strip composite layer 130.
Specifically, firstly, two layers of bamboo strip are spirally wound outside the bonding
coordination layer 120 (i.e., one layer of bamboo strip is wound along the first direction
and then one layer of bamboo strip is wound along the second direction), and then two to three layers of bamboo strip are circumferentially wound outside the bonding coordination layer 120 at positions corresponding to the cylindrical body 113 of the inner lining 110, so that the whole bamboo strip 130 is formed repeatedly and alternately.
Step S103: An outer protective layer 140 is coated on the outer surface of the bamboo
strip composite layer 130.
Specifically, the outer protective layer 140 is made of epoxy resin and epoxy curing
agent, which are coated on the outer surface of the bamboo strip composite layer 130, and
the outer protective layer 140 is formed after the epoxy resin is cured. In this
embodiment, the outer protective layer 140 is made of bisphenol A-type epoxy resin and
epoxy curing agent, which is the same as the material of the bonding coordination layer
120, but it is not limited to this. The material of the outer protective layer 140 is not
specifically specified, and the material should be selected according to the specific
application context.
According to the manufacturing method of the natural gas cylinder provided by the
embodiment of the invention, firstly, an bonding coordination layer 120 is coated on the
outer surface of the inner lining110; Then winding on the outer surface of the bonding
coordination layer 120 with bamboo strip, and winding the bonding coordination layer
120 with the bamboo strip to form a bamboo strip composite layer 130; Then an outer
protective layer 140 is coated on the outer surface of the bamboo strip composite layer
130, and the outer protective layer 140 protects the bamboo strip composite layer 130
after curing. Compared with the existing technology, because the manufacturing method
of the natural gas cylinder provided by the invention adopts the step of winding the the
outer surface of the bonding coordination layer 120 with bamboo strip to form the bamboo strip composite layer 130, the natural gas cylinder 100 with light weight, good insulation and corrosion resistance, no stress defect distribution, excellent pressure bearing and deformation resistance, low manufacturing cost, strong safety, energy conservation and environmental protection can be manufactured.
The above is only a preferred embodiment of the present invention, and is not used to
limit the present invention. For those skilled in the field, the present invention have
various modifications and changes. Any modification, equivalent substitution,
improvement, etc. made within the spirit and principle of the present invention shall be
included in the protection scope of the present invention.

Claims (10)

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A manufacturing method of natural gas cylinder is characterised by:
Coating a bonding coordination layer on the outer surface of the inner lining;
Winding the outer surface of the bonding coordination layer with bamboo strip to form a
bamboo strip composite layer;
An outer protective layer is coated on the outer surface of the bamboo strip composite
layer.
2. The manufacturing method of natural gas cylinder according to claim 1, is
characterized in that in the step of coating the bonding coordination layer on the outer
surface of the inner lining, the bonding coordination layer is made of epoxy resin and
epoxy curing agent or phenolic resin and phenolic curing agent.
3. The manufacturing method of natural gas cylinder according to claim 1, is
characterized in that in the step of coating the bonding coordination layer on the outer
surface of the inner lining, the thickness of the bonding coordination layer is in the range
of 0.1 mm to 0.4 mm.
4. The method for manufacturing a natural gas cylinder according to claim 1, is
characterized in that the steps of winding the outer surface of the bonding coordination
layer with bonding bamboo strip to form a bamboo strip composite layer comprise:
Helically winding the outer surface of the bonding coordination layer with bamboo strip
to form a first winding layer;
Circumferentially winding a position outside the bonding coordination layer with bamboo
strip corresponding to the cylindrical body of the inner lining layer to form a second
winding layer;
The first winding layer and the second winding layer are alternately arranged and
combined to form the bamboo strip composite layer.
5. The manufacturing method of natural gas cylinder according to claim 4, is
characterized in that the steps of spirally winding the outer surface of the bonding
coordination layer with bamboo strip to form a first winding layer comprise:
Helically winding outside the bonding coordination layer along a first direction with
bamboo strip; Helically winding outside the bonding coordination layer along a second
direction with bamboo strip; The first direction is opposite to the second direction.
6. The manufacturing method of natural gas cylinder according to claim 5, is
characterized in that the degree of included angle between the first direction and the axial
direction of the bonding coordination layer is in the range of 13 degrees to 58 degrees.
7. The manufacturing method of natural gas cylinder according to claim 4, is
characterized in that in the step of spirally winding the outer surface of the bonding
coordination layer with bamboo strip to form the first winding layer, the thickness of the
first winding layer is in the range of 2 mm to 5 mm.
8. The method for manufacturing a natural gas cylinder according to claim 4, is
characterized in that in the step of circumferentially winding a position outside the
bonding coordination layer with bamboo strip corresponding to the cylindrical body of
the inner lining layer to form the second winding layer, the thickness of the second
winding layer is in the range of 5 mm to 8 mm.
9. The manufacturing method of natural gas cylinder according to claim 1, is
characterized in that in the step of coating an outer protective layer on the outer surface of the bamboo strip composite layer, the outer protective layer is made of epoxy resin and epoxy curing agent.
10. A natural gas cylinder, is characterized in that the natural gas cylinder is
manufactured by the manufacturing method according to any one of claims 1 to 9.
AU2021104289A 2021-07-19 2021-07-19 Manufacturing method of natural gas cylinder and natural gas cylinder Ceased AU2021104289A4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2021104289A AU2021104289A4 (en) 2021-07-19 2021-07-19 Manufacturing method of natural gas cylinder and natural gas cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021104289A AU2021104289A4 (en) 2021-07-19 2021-07-19 Manufacturing method of natural gas cylinder and natural gas cylinder

Publications (1)

Publication Number Publication Date
AU2021104289A4 true AU2021104289A4 (en) 2021-09-09

Family

ID=77589205

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2021104289A Ceased AU2021104289A4 (en) 2021-07-19 2021-07-19 Manufacturing method of natural gas cylinder and natural gas cylinder

Country Status (1)

Country Link
AU (1) AU2021104289A4 (en)

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