CN212456270U - Plastic liner fiber full-winding composite gas cylinder opening structure - Google Patents
Plastic liner fiber full-winding composite gas cylinder opening structure Download PDFInfo
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- CN212456270U CN212456270U CN202020453833.4U CN202020453833U CN212456270U CN 212456270 U CN212456270 U CN 212456270U CN 202020453833 U CN202020453833 U CN 202020453833U CN 212456270 U CN212456270 U CN 212456270U
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- plastic liner
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- bottle mouth
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Abstract
The utility model discloses a compound gas cylinder bottleneck structure of plastics inner bag fibre full winding, include: install the metal bottleneck on the plastics inner bag bottleneck, the metal bottleneck is by outer metal interface, toper metal inside lining, the connecting piece is constituteed, the lateral wall of toper metal inside lining is the toper that outside-in gradually enlarges, outer metal interface fastening suit is on the plastics inner bag bottleneck, toper metal inside lining inlays and locates in the plastics inner bag bottleneck, the connecting piece comprises linkage segment and seal segment coaxial coupling, linkage segment and outer metal interface looks threaded connection, and lean on with plastics inner bag bottleneck counterbalance, be provided with an annular seal groove on the interior terminal surface of linkage segment at least, all be provided with the sealing washer in every annular seal groove, the seal segment inserts to the toper metal inside lining, and with toper metal inside lining looks threaded connection, be equipped with the internal thread that is used for installing the bottleneck valve on the inside wall of connecting piece. The gas cylinder opening has the advantages of simple structure, convenience in installation, easiness in maintenance and more reliable sealing.
Description
Technical Field
The utility model relates to a hydrogen storage device field, concretely relates to compound gas cylinder bottleneck structure of plastics inner bag fibre full winding.
Background
The compound gas cylinder of plastics inner bag fibre full winding is a portable hydrogen storage equipment, and this kind of hydrogen storage gas cylinder mainly used provides hydrogen for the hydrogen energy automobile, and the structure of the compound gas cylinder of plastics inner bag fibre full winding includes usually: the plastic inner container is provided with a high-strength metal bottle mouth on the bottle mouth of the plastic inner container, the metal bottle mouth is usually used for being connected with a bottle mouth valve, and a fiber reinforced layer is wound on the outer side of the plastic inner container. The prior utility model with the application number of CN201620704982.7 discloses a port structure of a plastic liner winding container, which is sealed by adopting a connecting plug and a conical plug, so that the port structure is more complex and the connecting plug and the conical plug are more inconvenient to install; in addition, in the using process, the connecting plug is easy to loosen, so that the conical plug cannot be well attached to the inner wall of the plastic liner, and the sealing of the conical plug becomes unreliable; if the connecting plug needs to be screwed again, the lower end plug needs to be disassembled first, and then the connecting plug can be screwed, so that the maintenance operation becomes complicated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the plastic liner fiber fully-wound composite gas cylinder opening structure has the advantages of simple structure, convenience in installation, easiness in maintenance and more reliable sealing.
In order to solve the above problem, the utility model discloses the technical scheme who adopts does: plastics inner bag fibre twines compound gas cylinder bottleneck structure entirely includes: install the metal bottleneck on the plastics inner bag bottleneck, its characterized in that: the metal bottle mouth consists of an outer metal interface, a conical metal lining and a connecting piece, the outer metal interface, the conical metal lining and the connecting piece are all annular, the outer side wall of the conical metal lining is conical and gradually expands from outside to inside, the outer metal interface is tightly sleeved on the bottle mouth of the plastic liner, the outer end face of the outer metal interface is higher than the outer end face of the bottle mouth of the plastic liner, the conical metal lining is embedded in the bottle mouth of the plastic liner, so that the outer side wall of the conical metal lining is attached to the inner side wall of the bottle mouth of the plastic liner, the outer end face of the conical metal lining is lower than the outer end face of the bottle mouth of the plastic liner, the connecting piece is formed by coaxially connecting a connecting section and a sealing section, the outer end of the sealing section is connected with the inner end of the connecting section, the outer diameter of the connecting section is larger than that of the sealing section, the, the inner end face of the connecting section is at least provided with an annular sealing groove, each annular sealing groove is internally provided with a sealing ring capable of sealing a gap between the connecting section and the bottle mouth of the plastic liner, the sealing section is inserted into the conical metal liner and is in threaded connection with the conical metal liner, and the inner side wall of the connecting piece is provided with an internal thread for installing the bottle mouth valve.
Further, aforementioned compound gas cylinder bottleneck structure of plastics inner bag fibre full winding, wherein: the included angle between the outer side wall bus of the conical metal lining and the vertical direction is 3-13 degrees, and the preferred included angle is 8 degrees.
Further, aforementioned compound gas cylinder bottleneck structure of plastics inner bag fibre full winding, wherein: two annular sealing grooves are arranged on the inner end surface of the connecting section.
Further, aforementioned compound gas cylinder bottleneck structure of plastics inner bag fibre full winding, wherein: a driving structure for conveniently rotating the connecting piece is arranged on the connecting piece.
Further, aforementioned compound gas cylinder bottleneck structure of plastics inner bag fibre full winding, wherein: the driving structure is a driving groove or a driving boss.
Further, aforementioned compound gas cylinder bottleneck structure of plastics inner bag fibre full winding, wherein: all threads on the metal bottle mouth are right-handed threads.
The utility model has the advantages that: the plastic liner fiber fully-wound composite gas cylinder mouth structure of the utility model is relatively simple, only the connecting piece needs to be screwed in during installation, the installation is also relatively simple, and the screwed connecting piece can be directly loaded without disassembling other components to ensure the sealing effect of the conical metal lining, so that the maintenance is relatively simple; the sealing surface between the conical metal lining and the bottle mouth of the plastic liner is a conical surface, so that the sealing area is increased, and the sealing effect is enhanced; after the connecting piece is screwed in to apply pressure to the mouth of the plastic liner, mechanical snap force can be generated between the outer side wall of the conical metal liner and the inner side wall of the mouth of the plastic liner, so that the conical metal liner is tightly attached to the mouth of the plastic liner, and the greater the pressure applied by the connecting piece is or the greater the gas pressure in the gas cylinder is, the tighter the attachment is, and the better the sealing effect is; in addition, the sealing ring or the connecting piece is convenient to replace by the gas cylinder bottle mouth structure, and the sealing effect between the conical metal lining and the plastic liner bottle mouth can be optimized for the second time through reloading when a new connecting piece is screwed in.
Drawings
Fig. 1 is a schematic structural diagram of a plastic liner fiber fully-wound composite gas cylinder mouth structure of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
As shown in fig. 1, the plastic liner fiber fully-wound composite cylinder opening structure comprises: the metal bottle mouth is arranged on the bottle mouth of the plastic liner 4, the metal bottle mouth consists of an outer metal interface 1, a conical metal liner 2 and a connecting piece 3, the outer metal interface 1, the conical metal liner 2 and the connecting piece 3 are all annular, the outer side wall of the conical metal liner 2 is conical and gradually expands from outside to inside, the outer metal interface 1 is tightly sleeved on the bottle mouth of the plastic liner 4, an annular presser foot 11 which can be attached to the plastic liner 4 is arranged at the inner end of the outer metal interface 1, the outer metal interface 1 is wound and wrapped by a fiber reinforcement layer 6 through the annular presser foot 11 and is fixed with the bottle mouth of the plastic liner 4, and the fiber reinforcement layer 6 is usually a carbon fiber layer; the outer end face of the outer metal interface 1 is higher than the outer end face of the bottle mouth of the plastic liner 4, the conical metal liner 2 is embedded in the bottle mouth of the plastic liner 4, so that the outer side wall of the conical metal liner 2 is attached to the inner side wall of the bottle mouth of the plastic liner 4, the outer end face of the conical metal liner 2 is lower than the outer end face of the bottle mouth of the plastic liner 4, and in actual production, the conical metal liner 2 and the plastic liner 4 are integrally formed through a blow molding process; the connecting piece 3 is formed by coaxially connecting a connecting section 31 and a sealing section 32, the outer end of the sealing section 32 is connected with the inner end of the connecting section 31, the outer diameter of the connecting section 31 is larger than that of the sealing section 32, the connecting section 31 is in threaded connection with the outer metal interface 1 and abuts against the mouth of the plastic liner 4, two annular sealing grooves 311 are arranged on the inner end face of the connecting section 31, a sealing ring 312 capable of sealing a gap between the connecting section 31 and the mouth of the plastic liner 4 is arranged in each annular sealing groove 311, the sealing section 32 is inserted into the conical metal liner 2 and is in threaded connection with the conical metal liner 2, and an internal thread used for installing a mouth valve is arranged on the inner side wall of the connecting piece 3.
2 lateral wall generating lines of toper metal inside lining and the contained angle alpha of vertical direction are 3 ~ 13, and in this embodiment, 2 lateral wall generating lines of toper metal inside lining and vertical direction's contained angle alpha are 8, and this angle enables the better sealing of toper metal inside lining 2. In addition, the connecting piece 3 is provided with a driving structure 5 for conveniently rotating the connecting piece 3, in the embodiment, the driving structure 5 is a driving groove, and in practical application, the driving structure 5 can also be a driving boss. All threads on the metal bottle mouth are right-handed threads, so that the bottle mouth valve is habitually screwed in clockwise, and meanwhile, leakage caused by looseness of the connecting piece 3 in the screwing process of the bottle mouth valve is avoided.
Claims (7)
1. Plastics inner bag fibre twines compound gas cylinder bottleneck structure entirely includes: install the metal bottleneck on the plastics inner bag bottleneck, its characterized in that: the metal bottle mouth consists of an outer metal interface, a conical metal lining and a connecting piece, the outer metal interface, the conical metal lining and the connecting piece are all annular, the outer side wall of the conical metal lining is conical and gradually expands from outside to inside, the outer metal interface is tightly sleeved on the bottle mouth of the plastic liner, the outer end face of the outer metal interface is higher than the outer end face of the bottle mouth of the plastic liner, the conical metal lining is embedded in the bottle mouth of the plastic liner, so that the outer side wall of the conical metal lining is attached to the inner side wall of the bottle mouth of the plastic liner, the outer end face of the conical metal lining is lower than the outer end face of the bottle mouth of the plastic liner, the connecting piece is formed by coaxially connecting a connecting section and a sealing section, the outer end of the sealing section is connected with the inner end of the connecting section, the outer diameter of the connecting section is larger than that of the sealing section, the, the inner end face of the connecting section is at least provided with an annular sealing groove, each annular sealing groove is internally provided with a sealing ring capable of sealing a gap between the connecting section and the bottle mouth of the plastic liner, the sealing section is inserted into the conical metal liner and is in threaded connection with the conical metal liner, and the inner side wall of the connecting piece is provided with an internal thread for installing the bottle mouth valve.
2. The plastic liner fiber fully-wound composite cylinder opening structure of claim 1, which is characterized in that: the included angle between the outer side wall bus of the conical metal lining and the vertical direction is 3-13 degrees.
3. The plastic liner fiber fully-wound composite cylinder opening structure of claim 2, which is characterized in that: the included angle between the generatrix of the outer side wall of the conical metal lining and the vertical direction is 8 degrees.
4. The plastic liner fiber fully-wound composite gas cylinder opening structure as claimed in claim 1, 2 or 3, which is characterized in that: two annular sealing grooves are arranged on the inner end surface of the connecting section.
5. The plastic liner fiber fully-wound composite gas cylinder opening structure as claimed in claim 1, 2 or 3, which is characterized in that: a driving structure for conveniently rotating the connecting piece is arranged on the connecting piece.
6. The plastic liner fiber fully-wound composite cylinder opening structure of claim 5, which is characterized in that: the driving structure is a driving groove or a driving boss.
7. The plastic liner fiber fully-wound composite gas cylinder opening structure as claimed in claim 1, 2 or 3, which is characterized in that: all threads on the metal bottle mouth are right-handed threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453833.4U CN212456270U (en) | 2020-04-01 | 2020-04-01 | Plastic liner fiber full-winding composite gas cylinder opening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453833.4U CN212456270U (en) | 2020-04-01 | 2020-04-01 | Plastic liner fiber full-winding composite gas cylinder opening structure |
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| CN212456270U true CN212456270U (en) | 2021-02-02 |
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| CN202020453833.4U Active CN212456270U (en) | 2020-04-01 | 2020-04-01 | Plastic liner fiber full-winding composite gas cylinder opening structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775926A (en) * | 2021-08-30 | 2021-12-10 | 浙江工业大学 | Embedded metal bottleneck structure of IV type hydrogen storage bottle |
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2020
- 2020-04-01 CN CN202020453833.4U patent/CN212456270U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775926A (en) * | 2021-08-30 | 2021-12-10 | 浙江工业大学 | Embedded metal bottleneck structure of IV type hydrogen storage bottle |
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