CN201475632U

CN201475632U - Large-volume composite hydrogen storage cylinder having aluminum liner and fully-wound with carbon fibers

Info

Publication number: CN201475632U
Application number: CN2009201710981U
Authority: CN
Inventors: 孙冬生; 张国; 李露露
Original assignee: BEIJING CHINATANK INDUSTRY Co Ltd
Current assignee: BEIJING CHINATANK INDUSTRY Co Ltd
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-05-19
Anticipated expiration: 2019-08-21

Abstract

The utility model relates to a large-volume composite hydrogen storage cylinder having an aluminum liner and fully-wound with carbon fibers. The composite hydrogen storage cylinder comprises, sequentially from the inside out, an aluminum liner, a coating layer, a carbon fiber layer and a glass fiber layer, wherein the carbon fiber layer is formed by alternating circular winding and spiral winding; the glass fiber layer is wound on the outer surface of the cylinder to achieve impact protection; the aluminum liner has a thickness of 3 to 7 mm; and the thickness of the anti-static coating layer is 0.3 to 0.6 mm. The composite hydrogen storage cylinder is characterized in that the liner of the cylinder respectively has a large mouth and a small mouth formed on both ends thereof in a seamless neck spinning manner, wherein the diameter of the large mouth is 85 mm; the diameter of the small mouth is 50 mm; M50*2 straight threads are formed on the inner wall of the large mouth; and M25*2 straight threads are formed on the inner wall of the small mouth. The aluminum alloy liner is made of 6061 aluminum alloy, and is formed by integral neck spinning, and an O-shaped ring is used for sealing the mouth of the aluminum alloy liner to ensure the tightness of hydrogen under the work pressure of 35 MPa. The large-volume composite hydrogen storage cylinder has the advantages of long service life, large fatigue number (more than 15,000 times), high safety factor (not less than 3) and high safe reliability.

Description

Big volume carbon fiber twines aluminium courage storage hydrogen composite cylinder entirely

Technical field

The utility model relates to a kind of big volume carbon fiber and twines aluminium courage storage hydrogen composite cylinder entirely, belongs to the technical field of structures of product.

Background technique

Along with automobile industry development, fuel price continues soaring, and oil supply day is becoming tight, and substituting of new energy become inevitable.And hydrogen has that the source is abundant, cleaning and advantage such as renewable, along with the hydrogen fuel cell development of technology, will greatly promote the development of fuel cell electric vehicle.One of key technology of fuel cell car is Chu Qing, almost all base oneself upon both at home and abroad on the basis of compression storage hydrogen at present, and the overwhelming majority adopts aluminium courage composite cylinder.

(carbon fiber of 100L～250L) twines aluminium courage storage hydrogen composite cylinder to a kind of big volume entirely, is the hydrogen supply equipment in the hydrogen fuel cell system of new-energy automobile in the Modern Transportation Technology field, is used for storing compression hydrogen under the 35MPa high pressure.It adopts integrally formed aluminum alloy inner bag.On the aluminium courage, successively twine the high-strength carbon fiber soaked resin according to particular design, last heating cure and making.As the high-performance hydrogen storage vessel, it has characteristics in light weight, that Security is good concurrently, meets the light-weighted requirement of electric vehicle.

At present, the hydrogen cylinder that uses of domestic development hydrogen fuel cell automobile sample car is the compressed natural gas gas cylinder of sharp working pressure as 20MPa.Mainly there are five big technological difficulties in high-pressure hydrogen storing: one, selection difficulty, be prone to " hydrogen embrittlement phenomenon ", and can cause the cylinder liner internal surface bulge or fold to occur when serious; Two, bottleneck difficult sealing is because the hydrogen molecule amount is little, along with the rising of temperature and pressure easily makes hydrogen leak from valve or bottleneck sealing surface; Three, manufacture method difficulty, bottleneck integrated pressure sensor, temperature transducer and pressure-relieving device cause aluminium courage one port footpath big, and endoporus easily forms " horn mouth " during closing in, bottleneck wall thickness and worm tooth number can't meet design requirement, and need become winding angle and pole-changing hole during winding and twine; Four, be difficult to realize that ISO15869 is defined under circulating pressure scope 2.0MPa～1.25 times of nominal operating pressures and carries out fatigue test that gas cylinder did not leak or not explosion when cycle-index reached 15000 times fatigue life.Five, Chu Qing leads lowly, and at present working pressure is that the weight storage hydrogen rate of the hydrogen cylinder of 20MPa is 4.02%, volume storage hydrogen rate is 13.18%, improves the hydrogen cylinder working pressure and can improve volume storage hydrogen rate, prolongs distance travelled.Therefore, need to adopt appropriate design, guarantee the bottleneck security seal, make hydrogen cylinder when bearing higher working pressure, have good fatigue life.

Summary of the invention

The utility model designs at the situation of above-mentioned prior art just provides a kind of big volume carbon fiber to twine aluminium courage storage hydrogen composite cylinder entirely, its purpose is that it is the big volume of 35MPa that the hydrogen-fueled system for new-energy automobile provides a kind of nominal operating pressure, 100L～250L carbon fiber twines aluminium courage storage hydrogen composite cylinder entirely, this gas cylinder has work safety, Chu Qing leads height, the key technical indexes is reached advanced world standards fully, i.e. ISO15869 hydrogen or hydrogen mixed gas-land vehicle fuel gas cylinder.And guarantee that it is safe, durable that this gas cylinder is worked under the 35MPa hydrogen gas environment.

The technical solution of the utility model is:

The big volume carbon fiber of this kind twines aluminium courage storage hydrogen composite cylinder entirely; this gas cylinder from inside to outside is followed successively by aluminium courage layer; anti-static coating; carbon fiber layer and glass fibre layer; wherein; carbon fiber layer is to adopt hoop winding and spiral to twine alternately to be entwined; the gas cylinder outer surface twines glass fibre layer and carries out the shock resistance protection; the thickness of aluminium courage layer is 3～7mm; the thickness of anti-static coating is 0.3～0.6mm; it is characterized in that: the inner bag of this gas cylinder is realized bold mouth and little courage mouth respectively in seamless spinning closing-in mode at two ends; courageously the diameter of mouth is 85mm; the diameter of little courage mouth is 50mm; courageously be processed with screw thread on mouth and the little courage mouth inwall; courageously the mouth screw thread adopts the M50x2 straight thread, and little courage mouth screw thread adopts the M25x2 straight thread.

Description of drawings

Fig. 1 is the structural representation of the utility model product

Embodiment

Below with reference to drawings and Examples the utility model product is further described:

Shown in accompanying drawing 1, a kind of big volume carbon fiber twines aluminium courage storage hydrogen composite cylinder entirely, this gas cylinder from inside to outside is followed successively by aluminium courage layer 1, anti-static coating 2, the fibrous composite layer comprises carbon fiber layer 3 and the glass fibre layer 4 that is used to protect, wherein, carbon fiber layer 3 is to adopt hoop winding and spiral to twine alternately to be entwined, the thickness of aluminium courage layer 1 is 3～7mm, the thickness of anti-static coating 2 is 0.3～0.6mm, it is characterized in that: the inner bag of this gas cylinder is realized bold mouth 5 and little courage mouth 6 respectively in seamless spinning closing-in mode at two ends, courageously the diameter of mouth 5 is 85mm, the diameter of little courage mouth 6 is 50mm, courageously be processed with screw thread on mouth 5 and little courage mouth 6 inwalls, courageously mouth 5 screw threads adopt the M50x2 straight thread, and little courage mouth 6 screw threads adopt the M25x2 straight thread.

This aluminum alloy inner bag is selected 6061 aluminum alloys for use, adopt the whole spinning closing-in moulding of aluminium courage, bottleneck adopts seal with O ring, can satisfy the tightness of hydrogen under the 35MPa working pressure, the gas cylinder long service life, the times of fatigue that gas cylinder charges and discharge is greater than 15000 times, and safety coefficient is not less than 3, the safety reliability height.

Claims

1. one kind big volume carbon fiber twines aluminium courage storage hydrogen composite cylinder entirely, this gas cylinder from inside to outside is followed successively by aluminium courage layer (1), coating (2), carbon fiber layer (3) and glass fibre layer (4), wherein, carbon fiber layer (3) is to adopt hoop winding and spiral to twine alternately to be entwined, the thickness of aluminium courage layer (1) is 3～7mm, the thickness of anti-static coating (2) is 0.3～0.6mm, it is characterized in that: the inner bag of this gas cylinder is realized bold mouth (5) and little courage mouth (6) respectively in seamless spinning closing-in mode at two ends, courageously the diameter of mouth (5) is 85mm, the diameter of little courage mouth (6) is 50mm, courageously be processed with screw thread on mouth (5) and little courage mouth (6) inwall, courageously mouth (5) screw thread adopts M50 * 2 straight threads, and little courage mouth (6) screw thread adopts M25 * 2 straight threads.