CN207796541U - A kind of high-pressure composite containers being provided with sealing structure - Google Patents
A kind of high-pressure composite containers being provided with sealing structure Download PDFInfo
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- CN207796541U CN207796541U CN201721927041.0U CN201721927041U CN207796541U CN 207796541 U CN207796541 U CN 207796541U CN 201721927041 U CN201721927041 U CN 201721927041U CN 207796541 U CN207796541 U CN 207796541U
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- inner container
- plastic inner
- neck member
- container
- neck
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Abstract
The utility model is related to a kind of high-pressure composite containers being provided with sealing structure, the container includes plastic inner container, there are one the neck members being connect with plastic inner container for the plastic inner container tool, an and supporting cover at least partly surrounding plastic inner container and neck member, the neck member is arranged in the open area of container neck, and at least one sealing ring is equipped between neck member and plastic inner container；Making container port, nearby the cavity inner wall of liner or outer wall are fitted closely with neck member, by the way of gasket, gas molecule is prevented to reveal on the mating surface path of the two, container selects extrusion and blow molding to obtain plastic inner container, the fiber support cover that the plastic inner container is made of reinforcing fiber and glass limit surrounds, and fiber is embedded in the matrix being made of synthetic resin；The technical solution can realize efficient sealing with relatively simple structure type.
Description
Technical field
The present invention relates to a kind of clad vessels, and in particular to a kind of high-pressure composite containers being provided with sealing structure belong to
Oiltank structure component technology field.
Background technology
Most of taxi repacking compressed natural gas (CNG) is to replace fuel oil, the operating pressure of general CNG gas cylinders
20MPa；Some vehicles producer has promoted the CNG or CNG vehicles mixed with fuel oil, such as Audi, general.Use hydrogen
Fuel cell car is also current hot spot, and the operating pressure of hydrogen storage gas cylinder is generally 35MPa, 70MPa, and 70MPa
IV types bottle (high-pressure plastic liner clad vessel) is current research and development focus.In addition to automobile-used, gas cylinder is also obtained in other field
Partial liquefaction oil gas to sufficient application, such as Europe uses plastic inner container clad vessel (operating pressure 2MPa).Largely
High-pressure bottle be used widely in daily life, that there are weight is bigger than normal for traditional simple metal or metal inner lining clad vessel
The problem of, it is not easy to transport；And storage pressure is higher, metal inner tube production technology is more complicated, and cost is higher, and there is also by high pressure gas
The risk of body corrosion.In order to meet light-weighted requirement, high-pressure plastic liner clad vessel generates, should because of the characteristic of plastics
Class product has the superior functions such as corrosion-resistant, endurance, and main production firm is Toyota, Hexagon (Norway), Quantum (U.S.s
State) etc..Relative to simple metal or metal inner lining clad vessel, the guarantee of the leakproofness of high-pressure plastic liner clad vessel is more severe
It carves, main cause is that plastic inner container is different from the material of metal termination, during use repeatedly, plastic inner container and metal end
Head connection can loosen, and sealing performance declines.
In view of present situation, the hot spot and difficult point of metal termination and plastic inner container connected into for research.Fig. 8 show one
High-pressure plastic liner clad vessel, metal termination 1 are mounted on plastic inner container 2, are twined later by fiber composite layer 3
Around being wrapped to form.Fig. 9 illustrates the sealing structure of end face：Metal termination 1 is contacted with the big face of plastic inner container in technique
It is infeasible, even if feasible cost is also high；The structure does not consider metal termination 1 and the limit on 2 axis of plastic inner container
Position；The structure does not consider the internal pressure changing pressurising of plastic inner container when winding, and metal termination 1 and plastic inner container can be caused to connect
The place of connecing generates gap and causes to leak；The structure does not consider limit when bottleneck bears installation torque, and metal termination 1 is caused after installation
It is reduced with the bond strength of composite layer 3；The escape paths P of compressed gas is shorter in the structure, can increase compressed gas escape
Risk, especially micro-molecular gas hydrogen, helium；Therefore, there is an urgent need for a kind of new schemes to solve the technical problem.
Invention content
The present invention exactly for the technical problems in the prior art, it is multiple to provide a kind of high pressure being provided with sealing structure
Container is closed, the Technical Design is ingenious, compact-sized, and entire scheme is sealed by the way of gasket and sealing ring,
While ensureing to seal between plastic inner container and neck member, the sealing between the attachmentes such as neck member and valve is enhanced, greatly
Reduce the risk of gas in container leakage.
To achieve the goals above, technical scheme is as follows, a kind of compound appearance of the high pressure being provided with sealing structure
Device, which is characterized in that the container includes plastic inner container, and there are one the necks being connect with plastic inner container for the plastic inner container tool
Opening in container neck is arranged in part and a supporting cover at least partly surrounding plastic inner container and neck member, the neck member
Mouth region domain is equipped at least one sealing ring between neck member and plastic inner container；Make the cavity inner wall of liner near container port
Or outer wall is fitted closely with neck member, by the way of gasket, prevents gas molecule from revealing on the mating surface path of the two,
Container selects extrusion and blow molding to obtain plastic inner container, and the plastic inner container limits the fiber branch constituted by reinforcing fiber and glass
Cover encirclement is held, fiber is embedded in the matrix being made of synthetic resin.For plastic inner container, consider often to apply in current business
Thermoplastic, such as nylon, HDPE, polyester, PP, POM etc., while multilayered structure may be used in plastic inner container, adds in centre
Enter barrier layer, prevents the infiltration of the small molecules such as hydrogen molecule.
As an improvement of the present invention, from the external assembly for carrying out neck member, neck after plastic inner container blow molding
As L-shaped annular seal gasket, the top half of gasket seal is bonded in section there are one being set between part and plastic inner container mating surface
Plastic inner container open end is compressed by neck member when assembling neck member and generates certain decrement, in neck member and plastics
Sealing effect is formed between liner；The lower half portion of gasket seal is bonded with plastic inner container opening inner wall, the quilt when assembling valve
Valve, which compresses, generates certain decrement, to form sealing effect between pressure vessel and valve.
As an improvement of the present invention, the neck member is assembled with plastic inner container by the way of being threadedly coupled,
In extrusion and blow molding, external thread structure is equipped on the outside of the port of plastic inner container, set on the inside of the port of neck member there are one
Step, upper and lower in step are respectively disposed with internal thread structure, wherein the internal thread structure of lower section is used for carrying out with plastic inner container
Assembly, step compresses L-shaped gasket seal while tightening.In addition, the screw thread above neck member port step is for installing valve
Equal attachmentes.
As an improvement of the present invention, all it is disposed with multiple tracks circumferential projection in the major seal faces of L-shaped gasket seal
Structure, the spacing and quantity arranged certainly can compress depending on specific implementation situation in assembly neck member and valve accessories
When gasket, the decrement and compressive strength of gasket seal can be increased in circumferential projection part, to enhance sealing effect.
As an improvement of the present invention, the plastic inner container with neck member disk part edge at match chalaza, if
There is interior heavy platform rank so that assembled when on plastic inner container by neck member, there are one smoothly excessive for the outer surface energy of the two, just
In the winding of subsequent fiber supporting cover.It is total that plastic inner container, gasket seal, neck member and fiber support cover constitute plastic inner container
At, it is contemplated that the cooperation of the attachmentes such as valve and inner pipe assembly, the connection end lower parts of the attachmentes such as valve need to set that there are one steps to use
In receiving L-shaped gasket seal, while gasket seal being made to generate certain decrement, forms sealing effect.The attachmentes such as valve simultaneously
The top outer of connection end be equipped with circular arc chamfering, make it easy to install and be unlikely to damage gasket seal.Such mode
The leakproofness of plastic inner container and neck member and the leakproofness of the attachmentes such as plastic inner container assembly and valve can be significantly greatly increased, lead to
The sealing for crossing gasket seal makes potential gas escape leakage paths that can be sealed effectively, neck member, liner and valve
Attachment forms effective sealing effect.
A kind of high-pressure composite containers being provided with sealing structure, which is characterized in that the container includes plastic inner container, described
There are one the neck member that connect with plastic inner container and one at least partly encirclement plastic inner containers and neck member for plastic inner container tool
Supporting cover, the neck member are arranged in the open area of container neck, and at least one is equipped between neck member and plastic inner container
Sealing ring；Making container port, nearby the cavity inner wall of liner or outer wall are fitted closely with neck member, by the way of gasket,
Gas molecule is prevented to reveal on the mating surface path of the two；Container selects extrusion and blow molding to obtain plastic inner container, the plastics
The fiber support cover that liner is made of reinforcing fiber and glass limit surrounds, and fiber is embedded in the matrix being made of synthetic resin；
While plastic inner container blow molding, neck member is placed on the inside of plastic inner container, the molten condition plastic inner container material after mold closing
Embryo and neck member are compacted, and in neck member disk portion of upper surface, are equipped with the circumferential recess of one fixed width, and material indusium squeezes when mold closing
Into in groove, plastic inner container forms an entirety with neck member, enhances the reliability of connection.
As an improvement of the present invention, shape gasket seal is set above the edge that plastic inner container and neck member 4 coordinate,
It is set above gasket seal there are one metal washer, the top of metal washer is compressed with a collar, and collar is adopted
With metal material, metal collar is connect by way of screw-thread fit with neck member, when tightening collar, collar bottom
Portion acts on gasket seal by metal washer, and gasket seal is made to generate certain decrement, forms sealing effect.
As an improvement of the present invention, it is set on the inside of neck member port there are one step, step lower section is equipped with together
Sealing ring, when installing valve, valve lower face compresses sealing ring, and sealing ring is made to generate certain decrement, forms sealing effect
Fruit enhances sealing performance of the valve relative to inner pipe assembly.
As an improvement of the present invention, when neck member disk part is bonded with the surface of plastic inner container, neck member disk
Partial surface is designed with a plurality of circumferentially spaced circular through hole, and in closed moulding, the material material embryo of plastic inner container can be squeezed
It is pressed into circular hole, the connection of neck member and plastic inner container can be reinforced after cooling is qualitative, while preventing neck member relative to modeling
Material liner circumferentially rotates.In addition, the quantity and size of circular through hole can be adjusted according to actual needs, also it is readily apparent that,
Shape of through holes may be designed as rectangular or cross etc..
Compared with the existing technology, the invention has the advantages that, pressure vessel neck seal structure proposed by the present invention is examined
The assembly for having considered the attachmentes such as bottleneck valve greatly enhances container in integral arrangement by the way of gasket and sealing ring
Sealing performance.In addition to seal with screwed joint between valve and plastic inner container assembly, the sealing shape of gasket/circle is increased
Formula effectively prevents the escape leakage of gas molecule, improves the security performance of product.
Description of the drawings
Fig. 1 be according to the present invention pressure vessel local appearance schematic diagram,
Fig. 2 is the longitudinal cross section of the embodiment of the present invention 1,
Fig. 3 is the enlarged cross-sectional view of neck join domain in Fig. 2,
Fig. 4 is amplification diagrams of the Fig. 3 in sealing area,
Fig. 5 is the longitudinal cross section of the embodiment of the present invention 2；
Fig. 6 is enlarged cross-sectional views of the Fig. 5 in neck join domain；
Fig. 7 is amplification diagrams of the Fig. 6 in sealing area；
Fig. 8 pressure vessel schematic diagrames in the prior art；
Fig. 9 is sealed structural representation；
In figure：1 pressure vessel, 2 plastic inner containers, 3 fiber support covers, 4 neck members, the attachmentes such as 5 valves, 6 gaskets, 7 spiral shells
Line structure, 8 helicitic textures, heavy platform rank in 9,10 circumferential projection structures, 11 circular arc chamferings, 12 gaskets, 13 metal gaskets, 14 is tight
Gu lantern ring, 15 sealing rings, 16 helicitic textures, 17 helicitic textures, 18 circumferential recess, 19 through-holes, 20 circumferential projection structures.
Specific implementation mode：
In order to deepen the understanding of the present invention, the present embodiment is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig. 1-Fig. 4, a kind of high-pressure composite containers being provided with sealing structure, the container includes modeling
Expect liner 2, there are one the neck members 4 being connect with plastic inner container and one at least partly to surround plastics for the tool of the plastic inner container 2
Liner and the supporting cover of neck member 3, the neck member are arranged in the open area of container neck, neck member and plastic inner container it
Between be equipped at least one sealing ring；Making container port, nearby the cavity inner wall of liner or outer wall are fitted closely with neck member, are used
The mode of gasket prevents gas molecule from revealing on the mating surface path of the two, and container selects extrusion and blow molding to be moulded
Expect that liner, the fiber support cover that the plastic inner container is made of reinforcing fiber and glass limit surround, fiber insertion is by synthesizing tree
In the matrix that fat is constituted.For plastic inner container, consider the thermoplastic often applied in current business, for example, nylon, HDPE,
Polyester, PP, POM etc., while multilayered structure may be used in plastic inner container, and barrier layer is added in centre, prevents hydrogen molecule etc. small
The infiltration of molecule.Fiber support cover 3 can be made of carbon fiber, glass fibre or the like.It is preferential to select with resin infiltration
Fiber or silk thread manufacture fiber support cover to be wound to plastic inner container.
It can be seen from Fig. 2 to 7 present invention in pressure vessel 1 by plastic inner container 2, preferably aluminium alloy manufacture neck
Part 4, the fiber support cover 3 for being wrapped in plastic inner container outer surface are constituted.Neck member 4 includes cylindrical portions and its structure of disk part
Similar to flange, installation threaded hole in neck member 4 for installing the attachmentes such as valve 5, in addition the installation threaded hole of neck member 4 with
The vessel port of plastic inner container 2 is coaxially disposed.Neck member is preferably made of metal, and is integral piece, it may be considered that uses aluminium alloy
Equal metal materials, the bore design of neck member have suitable for the attachmentes connection screw thread such as valve, protected in a manner of thread seal
Demonstrate,prove the sealing of valve and neck member.In addition, the present invention be equipped between valve and pressure vessel another road by gasket seal or
The sealing that sealing ring is formed, enhances the sealing effect between container and valve.The present invention relates to neck member be also referred to as
Connector or metal termination, according to its resemblance, neck member is made of cylindrical portions and disk part, wherein cylindrical portions with
Plastic inner container port is bonded, and nearby wall of inner container is bonded with container port for disk part.
In the pressure vessel specific example of Fig. 2 to 4, plastic inner container 2 is attached with neck member 4 by screw thread 8, is being moulded
L-shaped Gask-O-Seal 6 is in section there are one being set between material liner 2 and the counterface of neck member 4.Such embodiment is using modeling
After expecting 2 blow molding of liner, neck member 4 is installed by the mode assembled of outside, when assembly is first put into gasket seal 6 and plastics
The end face of liner 2 coordinates, and then installs neck member 4, and when tightening neck member 4, neck member 4, which compresses gasket 6, makes it generate one
Fixed decrement forms sealing effect, finally winds fiber support cover 3, enhances the stability of port organization.
By Fig. 3 it can be seen that the connector of the attachmentes such as valve 5 is connect by screw thread 7 with neck member 4, the end of the attachmentes such as valve 5
Head sets that there are one steps for accommodating gasket 6, and when being packed into the attachmentes 5 such as valve, end lateral wall compresses gasket 6, shape
At sealing effect.At edge and 2 cooperation of plastic inner container of 4 disk part of neck member, plastic inner container 2 sets that there are one interior heavy platform ranks
9 so that neck member 4 and the mating surface of plastic inner container 2 can seamlessly transit, and be convenient for the winding of fiber support cover 3.
By Fig. 4, it can be seen that, gasket 6 is all provided with the principal contact surfaces of the attachmentes 5 such as plastic inner container 2, neck member 4 and valve
There is circumferential projection structure 10, when gasket 6 is pressurized, circumferential projection structure 10 can make it generate the decrement of bigger, enhancing
Sealing performance.The end of the attachmentes such as valve 5 is equipped with circular arc chamfering 11, increases installation convenience, prevents damage gasket 6.
Plastic inner container, gasket seal, neck member and fiber support cover constitute plastic inner container assembly, it is contemplated that valve etc. is attached
The cooperation of part and inner pipe assembly, the connection end lower parts of the attachmentes such as valve need to set that there are one steps for accommodating L-shaped gasket seal,
So that gasket seal is generated certain decrement simultaneously, forms sealing effect.Simultaneously outside the top of the connection end of attachmentes such as valve
Side is equipped with circular arc chamfering, makes it easy to install and be unlikely to damage gasket seal.Such mode can be significantly greatly increased in plastics
The leakproofness of the leakproofness and the attachmentes such as plastic inner container assembly and valve of courage and neck member passes through sealing as shown in Fig. 3
The sealing of gasket makes potential gas escape leakage paths that can be sealed effectively, neck member, liner and valve accessories shape
At effective sealing effect.
Embodiment 2：Referring to Fig. 5-Fig. 7, a kind of high-pressure composite containers being provided with sealing structure, the container includes modeling
Expect liner 1, there are one the neck members 4 being connect with plastic inner container and one at least partly to surround plastics for the tool of the plastic inner container 1
Liner and the supporting cover of neck member 3, the neck member are arranged in the open area of container neck, neck member and plastic inner container it
Between be equipped at least one sealing ring；Making container port, nearby the cavity inner wall of liner or outer wall are fitted closely with neck member, are used
The mode of gasket prevents gas molecule from revealing on the mating surface path of the two；Container selects extrusion and blow molding to be moulded
Expect that liner, the fiber support cover that the plastic inner container is made of reinforcing fiber and glass limit surround, fiber insertion is by synthesizing tree
In the matrix that fat is constituted；While plastic inner container blow molding, neck member is placed on the inside of plastic inner container, is melted after mold closing
State plastic inner container material embryo is compacted with neck member, in neck member disk portion of upper surface, is equipped with the circumferential recess of one fixed width, is closed
Expect that indusium is squeezed into groove when mould, plastic inner container forms an entirety with neck member, enhances the reliability of connection.In plastics
Neck member 4 is placed in when 2 blow molding of liner, the material material indusium of plastic inner container 2 squeezes into neck member 4 when mold closing in blow-molding process
In groove 18, plastic inner container 2 forms an entirety with neck member 4.It is set above the matched edges of plastic inner container 2 and neck member 4
There is Gask-O-Seal 12, is set there are one metal gasket 13 in the top of gasket 12, metal gasket 13 is pressed by collar 14
Close packing 12, collar 14 are connect by screw thread 16 with neck member 4, and gasket 12 generates centainly when collar 14 is tightened
Decrement, formed sealing effect.Equally, it is circumferential that the lower surface that gasket seal is contacted with plastic inner container and neck member is equipped with multiple tracks
The structure of protrusion, increases the decrement and compressive strength of gasket seal, to enhance sealing effect.The cylindrical portion of neck member
Outside is equipped with helicitic texture in point, and outside screw is used to install collar, neck member and collar grip plastic liner,
Enhance positional stability of the neck member relative to plastic inner container；Inside thread is for installing the attachmentes such as valve.As shown in Fig. 5,
By the sealing of gasket and sealing ring, potential gas escape leakage paths are made to be sealed effectively, in neck member, plastics
Courage, valve form effective sealing effect, that is, entire inner pipe assembly forms effective sealing entirety.It can be with by Fig. 6
Find out, the attachmentes such as valve 5 are connect by screw thread 17 with neck member 4, are set there are one step in the end face of neck member 4, below step
If there are one sealing ring 15, in assembly, it is first put into sealing ring 15, then the attachmentes 5 such as valve are installed, the attachmentes such as valve 5 are tightened
When its end face compress sealing ring 15 it made to generate certain decrement, form sealing effect.As seen from Figure 6, in neck member 4
Disk be partially circumferentially disposed with multiple through-holes 19, number of openings is 8, in 2 blow molding of plastic inner container, material material embryo
It squeezes into through-hole 19, prevents neck member 4 from being rotated relative to plastic inner container 2.As seen from Figure 7, the lower surface of gasket 12 is set
There are 4 circumferential projection structures 20, wherein respectively there are twice with the contact surface of plastic inner container 2 and neck member 4, in 12 times of compressions of gasket
When, circumferential projection structure 20 can increase decrement, lift-off seal performance.
It should be noted that above-described embodiment, protection domain not for the purpose of limiting the invention, in above-mentioned technical proposal
On the basis of made equivalents or replacement each fall within the range that the claims in the present invention are protected.
Claims (9)
1. a kind of high-pressure composite containers being provided with sealing structure, which is characterized in that the container includes plastic inner container, the modeling
There are one the neck member being connect with plastic inner container and a branch at least partly surrounding plastic inner container and neck member for material liner tool
Cover is held, the neck member is arranged in the open area of container neck, is equipped between neck member and plastic inner container at least one close
Seal；Making container port, nearby the cavity inner wall of liner or outer wall are fitted closely with neck member, by the way of gasket, two
Prevention gas molecule is revealed on the mating surface path of person, container selection extrusion and blow molding acquisition plastic inner container, in the plastics
The fiber support cover that courage is made of reinforcing fiber and glass limit surrounds, and fiber is embedded in the matrix being made of synthetic resin.
2. the high-pressure composite containers according to claim 1 for being provided with sealing structure, which is characterized in that blown in plastic inner container
It is moulded into after type from the external assembly for carrying out neck member, sets that there are one sections to be L-shaped between neck member and plastic inner container mating surface
The top half of annular seal gasket, gasket seal is bonded plastic inner container open end, is compressed by neck member when assembling neck member
Certain decrement is generated, to form sealing effect between neck member and plastic inner container；The lower half portion of gasket seal with
Plastic inner container is open inner wall fitting, is compressed by valve when assemble valve and generates certain decrement, in pressure vessel and
Sealing effect is formed between valve.
3. the high-pressure composite containers according to claim 2 for being provided with sealing structure, which is characterized in that the neck member with
Plastic inner container is assembled by the way of being threadedly coupled, and is equipped in extrusion and blow molding, on the outside of the port of plastic inner container outer
Helicitic texture is set on the inside of the port of neck member there are one step, and upper and lower in step is respectively disposed with internal thread structure, wherein
The internal thread structure of lower section is used for being assembled with plastic inner container, and step compresses L-shaped gasket seal while tightening.
4. the high-pressure composite containers according to claim 3 for being provided with sealing structure, which is characterized in that in L-shaped gasket
The major seal faces of piece are all disposed with the structure of multiple tracks circumferential projection, when assembling neck member and valve accessories compress gasket,
Circumferential projection part can increase the decrement and compressive strength of gasket seal, to enhance sealing effect.
5. the high-pressure composite containers according to claim 4 for being provided with sealing structure, which is characterized in that the plastic inner container
With neck member disk part edge at match chalaza, be equipped with interior heavy platform rank so that by neck member assembly on plastic inner container
When, the outer surface of the two can be convenient for the winding of subsequent fiber supporting cover there are one smoothly excessive.
6. a kind of high-pressure composite containers being provided with sealing structure, which is characterized in that the container includes plastic inner container, the modeling
There are one the neck member being connect with plastic inner container and a branch at least partly surrounding plastic inner container and neck member for material liner tool
Cover is held, the neck member is arranged in the open area of container neck, is equipped between neck member and plastic inner container at least one close
Seal；Making container port, nearby the cavity inner wall of liner or outer wall are fitted closely with neck member, by the way of gasket, two
Gas molecule is prevented to reveal on the mating surface path of person；Container selects extrusion and blow molding to obtain plastic inner container, in the plastics
The fiber support cover that courage is made of reinforcing fiber and glass limit surrounds, and fiber is embedded in the matrix being made of synthetic resin；
While plastic inner container blow molding, neck member is placed on the inside of plastic inner container, after mold closing in molten condition plastics
Courage material embryo and neck member are compacted, and in neck member disk portion of upper surface, are equipped with the circumferential recess of one fixed width, and when mold closing expects indusium
It is squeezed into groove, plastic inner container forms an entirety with neck member, enhances the reliability of connection.
7. the high-pressure composite containers according to claim 6 for being provided with sealing structure, which is characterized in that plastic inner container with
Shape gasket seal is set above the edge of neck member cooperation, is set above gasket seal there are one metal washer, metal washer
Top compressed with a collar, collar uses metal material, and metal collar is by way of screw-thread fit and neck
Component connects, and when tightening collar, collar bottom acts on gasket seal by metal washer, and gasket seal is made to produce
Raw certain decrement, forms sealing effect.
8. the high-pressure composite containers according to claim 7 for being provided with sealing structure, which is characterized in that in neck member port
Inside set there are one step, one of sealing ring is equipped with below step, when install valve, valve lower face compression sealing ring,
So that sealing ring is generated certain decrement, forms sealing effect, enhance sealing performance of the valve relative to inner pipe assembly.
9. the high-pressure composite containers according to claim 8 for being provided with sealing structure, which is characterized in that neck member disk portion
The surface divided is designed with a plurality of circumferentially spaced circular through hole, and in closed moulding, the material material embryo of plastic inner container can be extruded
Into in circular hole, the connection of neck member and plastic inner container can be reinforced after cooling is qualitative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927041.0U CN207796541U (en) | 2017-12-31 | 2017-12-31 | A kind of high-pressure composite containers being provided with sealing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927041.0U CN207796541U (en) | 2017-12-31 | 2017-12-31 | A kind of high-pressure composite containers being provided with sealing structure |
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| CN207796541U true CN207796541U (en) | 2018-08-31 |
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| CN201721927041.0U Withdrawn - After Issue CN207796541U (en) | 2017-12-31 | 2017-12-31 | A kind of high-pressure composite containers being provided with sealing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856205A (en) * | 2020-12-31 | 2021-05-28 | 湖北三江航天红阳机电有限公司 | Flange connecting piece, composite high-pressure container and forming method |
-
2017
- 2017-12-31 CN CN201721927041.0U patent/CN207796541U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856205A (en) * | 2020-12-31 | 2021-05-28 | 湖北三江航天红阳机电有限公司 | Flange connecting piece, composite high-pressure container and forming method |
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