CN208090296U - A kind of high-pressure composite containers being provided with sealing structure - Google Patents

Abstract

The utility model is related to a kind of high-pressure composite containers being equipped 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；The neck member includes cylindrical portions and disk part, wherein cylindrical portions are bonded with plastic inner container opening inner wall, disk part is bonded with the inner wall around vessel port, when being filled with high-pressure medium inside container, pressure compresses neck member to plastic inner container inner wall, and the sealing between neck member and plastic inner container is enhanced in a manner of internal pressurization；Entire scheme is avoided and is installed again after plastic inner container molding using the molding mode for being placed in neck member in blow molded plastic liner, and the requirements such as structure, technique to reduce plastic inner container reduce development and manufacturing cost.

Description

A kind of high-pressure composite containers being provided with sealing structure

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. 7 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. 8 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 Close container, the Technical Design is ingenious, compact-sized, entire scheme using in blow molded plastic liner be placed in neck member at Type mode is avoided and is installed again after plastic inner container molding, the requirements such as structure, technique to reduce plastic inner container, Reduce development and manufacturing cost.

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, the container include plastic inner container, and there are one the neck member being connect with plastic inner container and one for plastic inner container tool extremely Small part surrounds the supporting cover of plastic inner container and neck member, and the neck member is arranged in the open area of container neck, in neck At least one sealing ring is equipped between part and plastic inner container, neck member itself is equipped with the structure for accommodating connection attachment.The program is kept away Exempt to be installed again after plastic inner container is molded, the requirements such as structure, technique to reduce plastic inner container reduce exploitation system Cause this.

As an improvement of the present invention, the present invention in pressure vessel by plastic inner container, preferably aluminium alloy manufacture metal Neck member, the fiber support cover for being wrapped in plastic inner container outer surface are constituted.The metal neck component includes cylindrical portions and disk Part, the installation threaded hole in neck member is for installing the attachmentes such as valve, connector, the installation threaded hole and plastics of neck member in addition The vessel port of liner is coaxially disposed.

As an improvement of the present invention, the container preferentially selects extrusion and blow molding to obtain plastic inner container, the modeling Material liner is surrounded by the fiber support cover that reinforcing fiber is constituted, and fiber is embedded in the matrix being made of synthetic resin.As for The material of plastic inner container 2 is considered as nylon, HDPE, PP, POM, polyester or the like.

As an improvement of the present invention, the fiber support cover is made of carbon fiber, glass fibre or the like.Preferentially It selects and fiber support cover is manufactured to be wound to plastic inner container with the fiber or silk thread of resin infiltration.The process itself is known 's.

As an improvement of the present invention, the neck member is disposed within by frock clamp in plastic inner container blow molding Portion's opening is bonded in mold closing with plastic inner container compression, and wherein the opening inner surface of cylindrical portions and plastic inner container compresses, circle Piece part is compressed with the inner surface of container near plastic inner container opening.In addition the sealing being placed between neck member and plastic inner container Part is installed on before being put into neck member in neck member.

As an improvement of the present invention, circumferentially there are multiple through-holes, in plastics on neck member disk part in addition When courage is molded, material is squeezed into through-hole, neck member can be prevented relative to the rotation of container plastic liner after sizing.

As an improvement of the present invention, in the center outer surface of neck member cylindrical portions, it is designed with arc-shaped groove, The material of plastic inner container is pressed into groove when closed moulding, enhance leakproofness and prevents the play up and down of neck member；In neck The envisaged underneath of the outer surface of the lower middle portion of component cylindrical portions and above-mentioned circular groove has twice square groove, rectangular Groove uses O-ring seal, is readily apparent that certainly and other section shapes such as Y types, T-type can also be used for installing sealing ring, design The sealing ring of shape only need to change groove shapes accordingly.This external groove and the quantity of sealing ring also may be used according to actual container size Increase or reduces.On the outside of neck member cylindrical portions, design one lantern ring of installation, lower surface and the neck member disk portion of lantern ring Upper surface contact, lantern ring upper surface is divided to be no more than circular groove, lantern ring internal diameter makes sealing ring generate one when can reach loading Fixed decrement can form sealing effect between such neck member and lantern ring by sealing ring；Cover ring outer surface design At the circumferential boss that section is triangle, the material similar to plastic inner container can be selected in the material of lantern ring, and lantern ring is used and is molded into Type, when being blow molded closed moulding, the material material embryo of plastic inner container is the high temperature spent 200 more, when being compressed with lantern ring boss, heat The triangle boss that lantern ring can be passed to is allowed to temperature raising and reaches molten condition, since the two belongs to same material, molten The liner material material embryo of state can reach mutually fusion sealing with the mutual welding of triangle boss of the lantern ring of molten condition after cooling Effect.By sealing ring sealing and the welding of plastic inner container material embryo and lantern ring triangle boss, make two potential gases Escape leakage paths can be just sealed effectively, and neck member and liner form effective sealing effect, that is, entirely It is whole that inner pipe assembly forms effective sealing.

As an improvement of the present invention, in neck member cylindrical portions outer surface, it is the circumferential direction of triangle to have multiple sections Groove, there are one boss for groove top, tight with neck member in closed moulding in plastic containers inner surface material indusium indentation groove Close connection prevents the play of neck member while enhancing leakproofness.In the root of neck member cylindrical portions, there are one sets for assembly Ring, there are one U-shaped sealing rings for the installation of lantern ring outer ring, and sealing ring uses can be with the material of plastic inner container welding, lantern ring and neck member It is attached by bolt, in closed moulding, plastic inner container material material embryo is the high temperature spent 200 more, with lantern ring outer ring When sealing ring compresses, heat can pass to sealing ring, be allowed to temperature raising and reach molten condition, since the material of the two can be mutual Welding, the liner material material embryo of molten condition can and molten condition the mutual welding of sealing ring, reach after cooling mutually fuse it is close The effect of envelope greatly enhances the leakproofness between plastic inner container and neck member.The table of neck member disk part and plastic inner container Face paste is closed, while being designed with a plurality of circumferentially spaced circular through hole on the surface of disk part, in the cylindrical portions of neck member Outer surface is designed with triangular groove, and in the top of groove, there are one boss for design, and when plastic inner container is molded, material is squeezed It is pressed into groove and wraps up boss.In the root of neck member cylindrical portions, there are one lantern rings for installation, and there are one the outer ring hoops of lantern ring Sealing ring, lantern ring are connect by bolt with neck member, when plastic inner container is molded, material squeeze lantern ring, and with sealing ring welding, The program is sealed by sealing ring and the welding of plastic inner container material embryo and sealing ring, makes potential gas escape leakage paths quilt It effectively seals against, neck member and liner form effective sealing effect, also form just entire inner pipe assembly effective close Envelope is whole.

Compared with the existing technology, the invention has the advantages that, the technical solution utilize plastic inner container extrusion-blown modling at It is placed in the mode of neck member when type, realizes the one-pass molding of pressure vessel neck structure, it is no longer necessary to be molded in plastic inner container After the processes such as welded or assembled, to reduce the requirements such as structure, technique, reduce development and manufacturing cost, and due to using The structure of the mode of built-in neck member, high-pressure bottle port section has stronger stability, while the present invention proposes two kinds Encapsulation scheme realizes the good sealing property between plastic inner container and neck member while simplifying process and structure；The program carries The scheme for having supplied two kinds of sealing rings to seal, realizes the efficient sealed of neck member.

Description of the drawings

Fig. 1 is the vertical view of pressure vessel of the present invention,

Fig. 2 is 6 longitudinal profile structure schematic of the embodiment of the present invention,

Fig. 3 is Fig. 2 partial enlarged views；

Fig. 4 is 7 longitudinal profile structure schematic of the embodiment of the present invention；

Fig. 5 is Fig. 4 partial enlarged views；

Fig. 6 is Fig. 5 partial enlarged views；

Fig. 7 is existing construction of pressure vessel schematic diagram；

Fig. 8 is existing sealing structure view.

In figure：1, pressure vessel, 2, plastic inner container, 3, fiber support cover, 4, neck member, 5, neck member cylindrical portions, 6, Neck member disk part, 7, circular groove, 8, square groove, 9, sealing ring, 10, lantern ring, 11, boss, 12, through-hole, 13, attached Part installs threaded hole, and 14, triangular groove, 15, boss, 16, lantern ring, 17, sealing ring, 18, bolt.

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. 6, 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 plastic inner container tool 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, neck member itself is equipped with the structure for accommodating connection attachment, by Fig. 2 and Fig. 3 it can be seen that, this In invention pressure vessel 1 by plastic inner container 2, preferably aluminium alloy manufacture metal neck component 4, be wrapped in plastic inner container outer surface Fiber support cover 3 is constituted, and the metal neck component includes cylindrical portions 5 and disk part 6, wherein cylindrical portions and plastic inner container Be open inner wall fitting, and disk part is bonded with the inner wall around vessel port, and when being filled with high-pressure medium inside container, pressure will Neck member is compressed to plastic inner container inner wall, and the sealing between neck member and plastic inner container, neck are enhanced in a manner of internal pressurization Installation threaded hole 13 in part 4 is for installing the attachmentes such as valve, connector, in addition in the installation threaded hole 13 Yu plastics of neck member 4 The vessel port of courage 2 is coaxially disposed.

Embodiment 2：As an improvement of the present invention, the container 1 preferentially selects extrusion and blow molding to obtain in plastics Courage 2, the fiber support cover 3 that the plastic inner container 2 is made of reinforcing fiber surround, and fiber is embedded in the matrix being made of synthetic resin In.In the program, plastic inner container is obtained by extrusion and blow molding, it is known that blow molding will appear wall thickness change, be blow molded After there are higher dimensional stability requirements, the program to be set in forming process mating surface or sealing surface when being welded or being assembled Fitting closely completely for mating surface and sealing surface can be ensured by entering neck member.By neck while extrusion blow moulding plastics liner Component is placed in using frock clamp among mold, is made in mold closing near vessel port inner wall and opening in the cavity of liner Wall fits closely completely with neck member, for plastic inner container, considers the thermoplastic often applied in current business, such as Buddhist nun Dragon, HDPE, polyester, PP, POM etc., while multilayered structure may be used in plastic inner container, and barrier layer is added in centre, prevents hydrogen The infiltration of the small molecules such as molecule.

Embodiment 3：Referring to Fig. 3-Fig. 6, as an improvement of the present invention, the fiber support cover 3 is by carbon fiber, glass Glass fiber or the like is constituted.Preferential select is wound manufacture fiber with the fiber or silk thread of resin infiltration to plastic inner container Supporting cover.

Embodiment 4：Referring to Fig. 2-Fig. 5, as an improvement of the present invention, the neck member 4 is blow molded in plastic inner container 2 By frock clamp portion's opening disposed within when molding, in mold closing with plastic inner container 2 compression be bonded, wherein cylindrical portions 5 and The opening inner surface of plastic inner container 2 compresses, the inner surface of container compression that disk part 6 is open neighbouring with plastic inner container 2.In addition it sets Seal member between neck member 4 and plastic inner container 2 is installed on before being put into neck member 4 in neck member 4.

Embodiment 5：Referring to Fig. 4, as an improvement of the present invention, the surface of neck member disk part and plastic inner container is pasted It closes, while a plurality of circumferentially spaced circular through hole is designed on the surface of disk part, in closed moulding, the material of plastic inner container Material can be pressed into circular hole, can reinforce the connection of neck member and plastic inner container after cooling is qualitative, while preventing neck member It is circumferentially rotated relative to plastic inner container.In addition, the quantity and size of circular through hole can be adjusted according to actual needs, also hold It is readily conceivable that, shape of through holes may be designed as rectangular or cross etc..In addition on neck member disk part 6, circumferentially have more A through-hole 12, when plastic inner container 2 is molded, material is squeezed into through-hole 12, neck member 4 can be prevented relative to container after sizing The rotation of plastic inner container 2.The leakproofness of plastic inner container and neck member is significantly greatly increased, such as attached drawing 4, is sealed and is moulded by sealing ring The welding for expecting liner material embryo and lantern ring triangle boss makes two potential gas escape leakage paths just can be by effectively Sealing, neck member and liner form effective sealing effect, that is, entire inner pipe assembly forms effective sealing entirety.

Embodiment 6：Referring to Fig. 2, Fig. 3, as an improvement of the present invention, in the middle part appearance of neck member cylindrical portions Face, design an arc-shaped groove structure, in closed moulding will the material of plastic inner container be pressed into groove in, enhancing leakproofness with And the play up and down of neck member is prevented, in the outer surface of the lower middle portion of neck member cylindrical portions and above-mentioned circular groove Envisaged underneath has twice square groove, and groove uses O-ring seal, be readily apparent that certainly for installing sealing ring, design herein The sealing ring of other cross sectional shapes such as Y types, T-type can also be used, only need to change groove shapes accordingly.This external groove and sealing ring Quantity also can increase or reduce according to actual container size, in the program, referring specifically to the pressure vessel of Fig. 3, according to The escape paths of the medium molecule marked are designed with circular groove 7 in the outer surface of the cylindrical portions 5 of neck member 4, are closing When mold forming, constituting the high molecular material of plastic inner container 2 can be squeezed into groove 7, equally useful in the outer surface of cylindrical portions 5 In the square groove 8 of installation sealing ring 9, outside is equipped with lantern ring 10, and the inner surface of lantern ring 10 compresses sealing ring 9, lantern ring 10 It is the boss 11 of triangle that, which there is section in outer surface, and lantern ring 10 is selected the high molecular thermoplast similar with plastic inner container 2, moulded Expect 11 welding of boss of its material and 10 outer surface of lantern ring when liner 2 is molded.

Embodiment 7：Referring to Fig. 4, Fig. 5, as an improvement of the present invention, on the outside of neck member cylindrical portions, design peace A lantern ring 16 is filled, the lower surface of lantern ring is contacted with neck member disk portion of upper surface, and lantern ring upper surface is no more than arc-shaped recessed Slot, lantern ring internal diameter, which can reach, makes sealing ring generate certain decrement when loading, between such neck member and lantern ring Sealing effect is formd by sealing ring；Set ring outer surface is designed to that section is the circumferential boss of triangle, and the material of lantern ring can The material similar to plastic inner container, lantern ring is selected to use injection molding, the material material embryo of plastic inner container when being blow molded closed moulding The high temperature spent 200, when being compressed with lantern ring boss, heat can pass to the triangle boss of lantern ring, be allowed to temperature raising more Reach molten condition, since the two belongs to same material, the liner material material embryo of molten condition can be with the lantern ring of molten condition The mutual welding of triangle boss achievees the effect that mutually to fuse sealing after cooling.Referring specifically to Fig. 5, according to the medium marked The escape paths of molecule are designed with triangular groove 14, in the top of groove 14 in the outer surface of the cylindrical portions 5 of neck member 4 There are one boss 15 for design, and when plastic inner container 2 is molded, material is pressed into groove 14 and wraps up boss 15.In neck The root installation of part cylindrical portions 5 is there are one lantern ring 16, and for the outer ring hoop of lantern ring 16 there are one sealing ring 17, lantern ring 16 passes through bolt 18 connect with neck member 4, when plastic inner container 2 is molded, material squeeze lantern ring 16, and with 16 welding of sealing ring, so greatly increase The strong sealing performance of structure.As attached drawing 5 makes to dive by sealing ring sealing and the welding of plastic inner container material embryo and sealing ring Gas escape leakage paths be sealed effectively, neck member and liner form effective sealing effect, that is, entirely It is whole that inner pipe assembly forms effective sealing.

The present invention can also combine at least one of described technical characteristic in embodiment 2,3,4,5,6 or 7 with embodiment 1 Form new embodiment.

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 (8)

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.

2. the high-pressure composite containers according to claim 1 for being provided with sealing structure, which is characterized in that the neck member packet Cylindrical portions and disk part are included, wherein cylindrical portions are bonded with plastic inner container opening inner wall, disk part and vessel port week The inner wall fitting enclosed, when being filled with high-pressure medium inside container, pressure compresses neck member to plastic inner container inner wall, is increased with inside The mode of pressure enhances the sealing between neck member and plastic inner container.

3. the high-pressure composite containers according to claim 2 for being provided with sealing structure, which is characterized in that the container is selected Extrusion and blow molding obtains plastic inner container, and the plastic inner container is surrounded by the fiber support cover that reinforcing fiber is constituted, fiber insertion In the matrix be made of synthetic resin.

4. the high-pressure composite containers according to claim 3 for being provided with sealing structure, which is characterized in that the fiber support Cover is made of carbon fiber, glass fibre or the like.

5. the high-pressure composite containers according to claim 4 for being provided with sealing structure, which is characterized in that the neck member exists By frock clamp portion's opening disposed within when plastic inner container blow molding, it is bonded with plastic inner container compression in mold closing, wherein The opening inner surface of cylindrical portions and plastic inner container compresses, disk part and the inner surface of container pressure near plastic inner container opening Tightly.

6. the high-pressure composite containers according to claim 5 for being provided with sealing structure, which is characterized in that neck member disk portion On point, circumferentially there are multiple through-holes, when plastic inner container is molded, material is squeezed into through-hole, and neck can be prevented after sizing Rotation of the part relative to container plastic liner.

7. according to the high-pressure composite containers for being provided with sealing structure described in Claims 2 or 3 or 4 or 5 or 6, which is characterized in that In the center outer surface of neck member cylindrical portions, it is designed with arc-shaped groove, in closed moulding by the material pressure of plastic inner container Enter in groove, enhance leakproofness and prevents the play up and down of neck member；In the appearance of the lower middle portion of neck member cylindrical portions The envisaged underneath of face and above-mentioned arc-shaped groove has twice square groove, and square groove is justified for installing sealing ring in neck member Cylinder portion outboard, design one lantern ring of installation, the lower surface of lantern ring are contacted with neck member disk portion of upper surface, lantern ring upper surface No more than circular groove, set ring outer surface is designed to that section is the circumferential boss of triangle, and the material of lantern ring can be selected similar It can be mutually molten with the triangle boss of the lantern ring of molten condition in the liner material material embryo of the material of plastic inner container, molten condition It connects, achievees the effect that mutually to fuse sealing after cooling.

8. according to the high-pressure composite containers for being provided with sealing structure described in Claims 2 or 3 or 4 or 5 or 6, which is characterized in that It is designed with triangular groove in the outer surface of the cylindrical portions of neck member, there are one boss for design in the top of groove, in plastics When liner is molded, material is pressed into groove and wraps up boss, and in the root of neck member cylindrical portions, there are one sets for installation Ring, there are one sealing rings for the outer ring hoop of lantern ring, and lantern ring is connect by bolt with neck member, and when plastic inner container is molded, material squeezes Pressing sleeve ring, and with sealing ring welding.