CN116557764A - High-performance bottle mouth sealing structure for IV-type hydrogen storage bottle - Google Patents
High-performance bottle mouth sealing structure for IV-type hydrogen storage bottle Download PDFInfo
- Publication number
- CN116557764A CN116557764A CN202310498844.2A CN202310498844A CN116557764A CN 116557764 A CN116557764 A CN 116557764A CN 202310498844 A CN202310498844 A CN 202310498844A CN 116557764 A CN116557764 A CN 116557764A
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- plastic
- ring
- cylinder body
- hydrogen storage
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 34
- 239000001257 hydrogen Substances 0.000 title claims abstract description 34
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 33
- 229920003023 plastic Polymers 0.000 claims abstract description 33
- 239000004033 plastic Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
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- 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
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Abstract
The invention discloses a high-performance bottle mouth sealing structure for an IV-type hydrogen storage bottle, which comprises a plastic inner container, a metal BOSS structure, a fastening clamp and a plurality of sealing rings, wherein the plastic inner container comprises a neck part and a shoulder part; the metal BOSS structure comprises an inner cylinder body, an outer cylinder body and a base, an annular hollow structure is formed between the inner cylinder body and the outer cylinder body, a sealing groove matched with the plastic liner is arranged in the hollow structure, and a plastic liner rotation stopping structure is arranged on the inner surface of the base; a ring groove for being embedded with the inner cylinder body is formed between the inner ring and the outer ring of the fastening clamp, a sealing ring is arranged in the ring groove, the inner ring is connected with the inner cylinder body through threads, and a locking structure is designed at the end of the inner ring; the outer ring end of the fastening clip is in interference fit with the neck of the plastic inner container; the tail part of the fastening clamp is provided with a sealing groove, and the sealing groove is matched with the base to clamp the shoulder part of the plastic liner. The invention enhances the sealing between the plastic inner container and the metal BOSS structure, and can increase the capacity of the plastic inner container for resisting the internal pressure and avoid the shrinkage of the plastic inner container.
Description
Technical Field
The invention belongs to the technical field of high-pressure hydrogen storage bottles, and particularly relates to a high-performance bottle opening sealing structure for an IV-type hydrogen storage bottle.
Background
The hydrogen energy is used as a clean and efficient energy source, has the characteristics of wide source, flexibility and high efficiency, and is developed and utilized in the key field of common attention of countries in the world. High-pressure gaseous hydrogen storage is the most popular and mature technology at present due to the rapid charging and discharging speed and simple technology. The plastic liner carbon fiber fully-wound hydrogen storage cylinder (IV type cylinder) becomes a research hot spot in the field of the current high-pressure hydrogen storage cylinder due to the characteristics of high hydrogen storage weight specific density, low manufacturing cost, light weight and the like. However, the pressure and temperature inside the hydrogen storage cylinder can be continuously changed in the hydrogen filling and discharging processes, and the connection position of the plastic liner and the bottleneck metal BOSS structure material performance is easy to generate fatigue in the repeated temperature and pressure change and expansion and contraction processes, so that the hydrogen is leaked.
Although the improved bottle mouth structure design of the IV-type hydrogen storage bottle is proposed by the prior study, the problems of poor sealing performance, high structure forming difficulty and poor structure stability exist. For example, patent CN 202110969781.5 discloses a bottle mouth structure of a hydrogen storage bottle with a fiber-wound plastic liner, which is provided with a fastening connection structure to achieve fastening connection between a metal bottle mouth and a plastic liner port in an integrated forming process. However, only through the toper faying face installation of pegging graft between metal annular inside lining and the plastics inner bag, structural stability is difficult to guarantee, and can't avoid taking place relative rotation between plastics inner bag and the metal annular inside lining, has increased the inefficacy risk of structure. As another example, patent CN 202110764292.6 discloses a bos structure for a type iv hydrogen storage cylinder, where a plastic liner can be clamped and installed by tightening a connection between the liner and the outer liner to generate a compression force. But the structure can not avoid the relative rotation between the inner liner and the outer liner and the plastic liner, and the inner liner and the outer liner are fixedly connected only through threads at the port, so that the whole plastic liner clamping structure is extremely uneven in stress, the pre-tightening force is difficult to ensure to exert the due effect, and the plastic liner is possibly caused to have stress concentration to cause failure. Although the sealing effect of the patent CN 201910439016.5 and the patent CN 202120139114.X is good, the structure of the plastic liner is not enhanced at the bottle mouth, and the plastic liner end socket and the metal BOSS structure bottle mouth are easily stripped when the axial impact is suffered, namely the stop structure of the plastic liner is lacked.
Therefore, how to avoid the instability of the structure, the stripping of the plastic liner and the realization of simple assembly and disassembly while enhancing the sealing performance between the bottleneck of the metal BOSS structure of the hydrogen storage cylinder and the plastic liner is a problem to be solved in the research and development of the IV-type hydrogen storage cylinder structure.
Disclosure of Invention
In order to solve at least one of the problems existing in the prior art, the invention aims to provide the high-performance bottle opening sealing structure for the IV-type hydrogen storage bottle, which has the advantages of stable structure, excellent sealing performance, simple assembly and liner torsion and shrinkage resistance.
The invention provides a high-performance bottle mouth sealing structure for an IV-type hydrogen storage bottle, which comprises a plastic liner, a metal BOSS structure, a fastening clamp and a plurality of sealing rings;
the plastic liner comprises a neck and a shoulder;
the metal BOSS structure comprises an inner cylinder body, an outer cylinder body and a base, an annular hollow structure is formed between the inner cylinder body and the outer cylinder body and is used for installing a neck of the plastic inner container, axial and radial sealing grooves matched with the plastic inner container are respectively arranged on the inner surface and the inner end face of the hollow structure, the design size is designed according to the national standard of the groove size of an O-shaped rubber sealing ring, an inner thread section and a locking hole are sequentially arranged on the inner surface of the inner cylinder body from the end head to the top, and a columnar groove for stopping rotation of the plastic inner container is formed on the inner surface of the base;
the fastening clamp comprises an inner ring, an outer ring and a tail part, a ring groove for being embedded with the inner cylinder body of the metal BOSS structure is formed between the inner ring and the outer ring, a sealing ring is arranged in the ring groove, a locking structure and an external thread section are sequentially arranged on the inner surface of the ring groove from top to bottom from the end head, and the ring groove is respectively matched with a locking hole and the internal thread section on the inner surface of the inner cylinder body to realize screwing and locking of the fastening clamp. The outer ring end of the fastening clip is in interference fit with the hook-shaped structure of the neck end of the plastic inner container. The tail part of the fastening clamp is provided with a sealing groove, and the sealing groove is matched with the metal BOSS structure base to clamp the shoulder part of the plastic liner.
Further improvements of the invention are that the outer ring ends of the clip are designed as conical structures.
Further, the end section of the neck of the plastic inner container is designed into a hook-shaped structure, the cross section of the conical structure of the outer ring of the fastening clamp is trapezoidal, the conical structure is tightly matched with the hook-shaped structure of the neck of the plastic inner container, and the pretightening force generated when the fastening clamp is screwed is respectively transmitted to a sealing ring between the plastic inner container and the metal BOSS structure for axial and radial sealing.
According to the invention, the distance between the locking hole and the end of the inner cylinder body is determined according to the required pretightening force, the number of the locking structure and the locking hole is two or more, and the setting positions are required to be matched with each other.
According to the invention, the sealing grooves on the inner surface and the inner end surface of the annular hollow structure are respectively arranged on the inclined edges of the trapezoid cross section of the outer ring conical structure of the fastening clip and the middles of the upper bottoms, so that the pretightening force transmitted to the corresponding sealing ring is maximized, and the sealing performance is further enhanced.
According to a further improvement of the invention, three or more processing holes are formed on the outer surface of the tail part of the fastening clip along the circumferential direction, so that the fastening clip can be screwed conveniently.
According to a further improvement of the invention, the inner surface of the fastening clip ring groove is a smooth surface, and is tightly contacted with the outer surface of the inner cylinder body.
According to the invention, the shoulder of the plastic liner is provided with a columnar BOSS which is matched with the columnar groove on the inner surface of the base of the metal BOSS structure, so that the rotation stop of the plastic liner is realized.
The locking structure comprises a lock head, a lock handle and a spring, wherein the lock handle is fixedly connected with the upper end of the lock head and is embedded in a blind hole at the end head of the inner surface of the ring groove of the fastening clamp, and the spring is arranged in the blind hole and is used for pushing the lock head into the locking hole to lock the fastening clamp.
According to the invention, the lock head of the locking structure can be completely pressed down into the blind hole of the ring groove of the fastening clamp, and the screwing process of the fastening clamp is not affected before the lock head reaches the locking hole.
Compared with the prior art, the invention at least has the following beneficial effects:
1. the fastening clamp is matched with the metal BOSS structure through threads, pretightening force can be applied to the plastic inner container in the screwing process, the sealing between the plastic inner container and the fastening clamp is enhanced, and hydrogen leakage is effectively prevented;
2. the cross section of the conical structure of the outer ring of the fastening clip is optimally designed to be trapezoidal, the cross section of the outer ring of the fastening clip is tightly matched with the hook-shaped structure of the neck of the plastic liner, the pretightening force from the fastening clip during screwing can be respectively transmitted to the sealing rings for axial and radial sealing between the plastic liner and the metal BOSS structure, and the sealing grooves of the sealing rings are respectively arranged on the inclined edges of the trapezoidal cross section of the outer ring of the fastening clip and the middles of the upper bottoms, so that the pretightening force transmitted to the corresponding sealing rings is maximized, and the sealing performance is further enhanced;
3. the outer ring of the fastening clip is matched with the hook-shaped end of the neck of the plastic inner container to play a role in stopping the plastic inner container, so that the plastic inner container is prevented from shrinking in the processing and using processes, and the plastic inner container is prevented from being separated from the metal BOSS structure;
4. the end head of the inner surface of the ring groove of the fastening clip is provided with a locking structure, the fastening clip can be locked after being screwed to a designated position, the fastening clip is prevented from loosening in the subsequent processing and using processes, and the locking structure is easy and convenient to assemble and disassemble, so that the processing efficiency is greatly improved.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are required to be used in the description of the embodiment or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, from which, without the inventive effort, other drawings can be obtained for a person skilled in the art, in which:
fig. 1 is a schematic diagram of the overall structure of a high-performance bottle mouth sealing structure for an iv-type hydrogen storage bottle according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a metal BOSS according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a plastic liner according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a fastening clip according to an embodiment of the present invention.
Fig. 5 is an enlarged schematic view of the structure at a in fig. 1.
In the figure, the 1-metal BOSS structure, the 2-plastic liner, the 3-sealing ring, the 4-fastening clamp, the 1-1-bottle valve connecting screw thread, the 1-2-outer cylinder, the 1-3-base, the 1-4-columnar groove, the 1-5-first sealing groove, the 1-6-second sealing groove, the 1-7-inner cylinder, the 1-8-locking hole, the 1-9-inner screw thread section, the 2-1-hook structure, the 2-2-columnar BOSS, the 4-1-outer ring, the 4-2-third sealing groove, the 4-3-fastening clamp tail, the 4-4-processing hole, the 4-5-outer screw thread section, the 4-6-blind hole, the 4-7-inner ring, the 5-1-lock head, the 5-2-lock handle and the 5-3-spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Embodiments of the present invention will be described in further detail below by way of specific examples, and with reference to the accompanying drawings. It should be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", etc., mentioned in the following embodiments are merely directions with reference to the drawings, and thus, the directional terms are used for illustrating but not limiting the present invention.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a high-performance bottle mouth sealing structure for an IV-type hydrogen storage bottle, which is shown in figure 1 and comprises a plastic inner container 2, a metal BOSS structure 1, a fastening clamp 4 and a plurality of sealing rings.
As shown in fig. 3, the plastic liner 2 comprises a neck and a shoulder, and the end section of the neck is designed into a hook-shaped structure 2-1.
As shown in fig. 2, the metal BOSS structure 1 comprises an inner cylinder 1-7, an outer cylinder 1-2 and a base 1-4, wherein an annular hollow structure is formed between the inner cylinder 1-7 and the outer cylinder 1-2 and is used for installing a neck of the plastic liner 2, a second sealing groove 1-6 and a first sealing groove 1-5 which are matched with the plastic liner 2 in an axial and radial mode are respectively arranged on the inner surface and the inner end surface of the annular hollow structure, the design size is designed according to the national standard of the groove size of an O-shaped rubber sealing ring, an inner thread section 1-9 and a locking hole 1-8 are sequentially arranged on the inner surface of the inner cylinder 1-7 from bottom to top, and a columnar groove 1-3 used for stopping rotation of the plastic liner 2 is arranged on the inner surface of the base 1-4.
As shown in fig. 4, the fastening clip 4 includes an inner ring 4-7, an outer ring 4-1 and a tail 4-3, a ring groove for being embedded with the inner cylinder 1-7 of the metal BOSS structure 1 is formed between the inner ring 4-7 and the outer ring 4-1, a sealing ring 3 is installed in the ring groove, a locking structure and an external thread section 4-5 are sequentially arranged on the inner surface of the ring groove from top to bottom from the end, and are respectively matched with a locking hole 1-8 and an internal thread section 1-9 on the inner surface of the inner cylinder 1-7, so that screwing and locking of the fastening clip 4 are realized. The end of the outer ring 4-1 of the fastening clip 4 is designed into a conical structure, and forms interference fit with the hook-shaped structure 2-1 of the neck end of the plastic inner container. The tail portion 4-3 of the fastening clip 4 is provided with a third sealing groove 4-2 and cooperates with the base 1-4 of the metal BOSS structure 2 to clamp the shoulder portion of the plastic liner 2.
In some embodiments of the present invention, as shown in fig. 5, the locking structure includes a lock head 5-1, a lock handle 5-2 and a spring 5-3, the lock handle 5-2 is fixedly connected with the upper end of the lock head 5-1, is embedded in a blind hole 4-6 at the end of the inner surface of the ring groove of the fastening clip 4, and the spring 5-3 is installed in the blind hole 4-6 and is used for pushing the lock head 5-1 into the locking hole 1-8 to lock the fastening clip 4.
In some embodiments of the present invention, the tapered structure of the outer ring 4-1 of the fastening clip 4 has a trapezoid cross-section shape, and is tightly matched with the neck hook structure 2-1 of the plastic liner 2, so as to transmit the pretightening force from the fastening clip 4 when being screwed to the sealing rings in the first sealing groove 1-5 and the second sealing groove 1-6 between the plastic liner 2 and the metal BOSS structure 1, respectively.
In some embodiments of the present invention, the distance between the locking hole 1-8 and the end of the inner cylinder 1-7 is determined according to the required pre-tightening force, the number of the locking structure and the locking hole 1-8 is two or more, and the setting positions need to be matched with each other.
In some embodiments of the present invention, the sealing grooves of the inner surface and the inner end surface of the hollow structure are respectively disposed on the oblique side of the trapezoid cross section of the outer ring 4-1 tapered structure of the fastening clip 4 and the middle vertical line of the upper bottom, so as to maximize the pretightening force transferred to the corresponding sealing ring, and further enhance the sealing performance.
In some embodiments of the present invention, three or more processing holes 4-4 are formed on the outer surface of the tail portion 4-3 of the fastening clip 4 along the circumferential direction, so as to facilitate screwing of the fastening clip 4.
In some embodiments of the present invention, the inner surface of the ring groove of the fastening clip 4 is a smooth surface, and is in close contact with the outer surface of the inner cylinder 1-7.
In some embodiments of the present invention, the locking head 5-1 of the locking structure 1 may be fully depressed into the blind hole 4-6 of the ring groove of the clip 4 so as not to interfere with the tightening process of the clip 4 until the locking hole 1-8 is reached.
In some embodiments of the present invention, the shoulder of the plastic liner 2 is provided with a cylindrical BOSS 2-2, which cooperates with a cylindrical groove 1-3 on the inner surface of the metal BOSS structure base 1-4 to realize the rotation stop of the plastic liner 2.
In the embodiment of the invention, the fastening clamp 4 is matched with the metal BOSS structure 1 through threads, the pretightening force can be applied to the plastic liner 2 in the screwing process, the sealing between the plastic liner 2 and the fastening clamp 4 is enhanced, and the leakage of hydrogen can be effectively prevented.
In the embodiment of the invention, the cross section of the conical structure of the outer ring 4-1 of the fastening clip is optimally designed to be trapezoidal, the cross section of the outer ring is tightly matched with the neck hook-shaped structure 2-1 of the plastic inner container 2, the pretightening force from the fastening clip 4 during screwing can be respectively transmitted to the sealing rings for axial and radial sealing between the plastic inner container 2 and the BOSS structure 1, the second sealing groove 1-6 and the first sealing groove 1-5 of the sealing rings are respectively arranged on the oblique sides of the trapezoid cross section of the outer ring conical structure of the fastening clip 4 and the middles of the upper bottom, and the pretightening force transmitted to the corresponding sealing rings can be maximized, so that the sealing performance is further enhanced.
In the embodiment of the invention, the matching of the outer ring 4-1 of the fastening clip and the end of the neck hook-shaped structure 2-1 of the plastic liner 2 can also play a role in stopping the plastic liner 2, prevent the plastic liner 2 from shrinking in the processing and using processes, and avoid the separation between the plastic liner 2 and the metal BOSS structure 1.
In the embodiment of the invention, the end of the inner surface of the ring groove of the fastening clip 4 is provided with a locking structure, the fastening clip 4 can be locked after being screwed to a designated position, the fastening clip 4 is prevented from loosening in the subsequent processing and using processes, and the locking structure 5 is easy and convenient to assemble and disassemble, so that the processing efficiency is greatly improved.
The above examples are only illustrative embodiments of the present invention, and the present invention is not limited to the above-described preferred embodiments, but is not limited to the above-described embodiments, and any equivalent modifications and variations can be made by those skilled in the art without departing from the scope of the present invention, as defined by the following claims. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.
Claims (10)
1. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle is characterized by comprising a plastic inner container, a metal BOSS structure, a fastening clamp and a plurality of sealing rings;
the plastic liner comprises a neck and a shoulder;
the metal BOSS structure comprises an inner cylinder body, an outer cylinder body and a base, an annular hollow structure is formed between the inner cylinder body and the outer cylinder body and is used for installing a neck of the plastic inner container, the inner surface and the inner end surface of the annular hollow structure are respectively provided with an axial sealing groove and a radial sealing groove which are matched with the plastic inner container, the inner surface of the inner cylinder body is sequentially provided with an inner thread section and a locking hole from bottom to top from the end head, and the inner surface of the base is provided with a groove for stopping rotation of the plastic inner container;
the fastening clamp comprises an inner ring, an outer ring and a tail part, a ring groove for being embedded with the inner cylinder body of the metal BOSS structure is formed between the inner ring and the outer ring, a sealing ring is arranged in the ring groove, a locking structure and an external thread section are sequentially arranged on the inner surface of the ring groove from top to bottom from the end head, and the locking structure and the external thread section are respectively matched with a locking hole and the internal thread section on the inner surface of the inner cylinder body; an interference fit is formed between the outer ring end of the fastening clip and the neck end of the plastic inner container, and the tail part of the fastening clip is provided with a sealing groove and is matched with the base of the metal BOSS structure to clamp the shoulder part of the plastic inner container.
2. The high performance bottle mouth sealing structure for a type iv hydrogen storage bottle of claim 1, wherein the outer ring end of the fastening clip is designed to be a conical structure.
3. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to claim 2, wherein the cross section of the end of the neck of the plastic inner container is designed into a hook-shaped structure, and the cross section of the conical structure of the outer ring of the fastening clip is trapezoidal and is tightly matched with the hook-shaped structure of the neck of the plastic inner container.
4. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to claim 1, wherein the distance between the locking hole and the end of the inner cylinder body is determined according to the required pretightening force, the number of the locking structure and the number of the locking holes are two or more, and the setting positions are matched with each other.
5. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to claim 1, wherein the sealing grooves of the inner surface and the inner end face of the annular hollow structure are respectively positioned on the oblique sides of the trapezoid cross section of the outer ring conical structure of the fastening clip and the middles of the upper bottom.
6. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to claim 1, wherein three or more processing holes are formed in the outer surface of the tail of the fastening clamp along the circumferential direction.
7. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to claim 1, wherein the inner surface of the ring groove of the fastening clamp is a smooth surface, and the fastening clamp is tightly contacted with the outer surface of the inner cylinder.
8. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle of claim 1, wherein a BOSS is arranged on the shoulder of the plastic liner and is matched with a groove on the inner surface of the base of the metal BOSS structure, so that the rotation of the plastic liner is stopped.
9. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to any one of claims 1 to 8, wherein the locking structure comprises a lock head, a lock handle and a spring, the lock handle is fixedly connected with the lock head and is embedded in a blind hole formed in the end head of the inner surface of the annular groove of the fastening clamp, and the spring is arranged in the blind hole and is used for pushing the lock head into the locking hole on the inner cylinder body to lock the fastening clamp.
10. The high-performance bottle mouth sealing structure for the IV-type hydrogen storage bottle according to claim 9, wherein the lock head of the locking structure can be completely pressed down into the blind hole of the ring groove of the fastening clamp, and the screwing process of the fastening clamp is not affected before the lock head reaches the locking hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310498844.2A CN116557764B (en) | 2023-05-05 | 2023-05-05 | High-performance bottle mouth sealing structure for IV-type hydrogen storage bottle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310498844.2A CN116557764B (en) | 2023-05-05 | 2023-05-05 | High-performance bottle mouth sealing structure for IV-type hydrogen storage bottle |
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| CN116557764A true CN116557764A (en) | 2023-08-08 |
| CN116557764B CN116557764B (en) | 2024-01-05 |
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| CN112879792A (en) * | 2021-03-16 | 2021-06-01 | 江苏国富氢能技术装备股份有限公司 | Composite bottle mouth structure of plastic liner fiber-wound gas cylinder |
| CN113217814A (en) * | 2021-06-11 | 2021-08-06 | 北京化工大学 | Inward-turning type high-hydrogen-resistance plastic-metal seal head sealing structure |
| CN113669617A (en) * | 2021-08-23 | 2021-11-19 | 浙江工业大学 | Fiber winding plastic inner container hydrogen storage cylinder opening structure |
| CN215259171U (en) * | 2021-03-16 | 2021-12-21 | 江苏国富氢能技术装备股份有限公司 | Composite bottle mouth structure of gas cylinder with plastic liner and fiber winding |
| CN115585385A (en) * | 2022-09-27 | 2023-01-10 | 中材科技（苏州）有限公司 | High-pressure storage and transportation bottle valve seat and high-pressure storage and transportation bottle |
| CN115949879A (en) * | 2022-09-28 | 2023-04-11 | 湖北三江航天江北机械工程有限公司 | Gas cylinder with plastic liner and fully wound with fibers |
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2023
- 2023-05-05 CN CN202310498844.2A patent/CN116557764B/en active Active
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| DE102006057422B3 (en) * | 2006-12-04 | 2008-06-26 | Mcs International Gmbh | Composite-pressure vessel e.g. for storing gaseous mediums, has liner made of plastic and which is reinforced with fiber composite material with neck |
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| CN215259171U (en) * | 2021-03-16 | 2021-12-21 | 江苏国富氢能技术装备股份有限公司 | Composite bottle mouth structure of gas cylinder with plastic liner and fiber winding |
| CN113217814A (en) * | 2021-06-11 | 2021-08-06 | 北京化工大学 | Inward-turning type high-hydrogen-resistance plastic-metal seal head sealing structure |
| CN113669617A (en) * | 2021-08-23 | 2021-11-19 | 浙江工业大学 | Fiber winding plastic inner container hydrogen storage cylinder opening structure |
| CN115585385A (en) * | 2022-09-27 | 2023-01-10 | 中材科技（苏州）有限公司 | High-pressure storage and transportation bottle valve seat and high-pressure storage and transportation bottle |
| CN115949879A (en) * | 2022-09-28 | 2023-04-11 | 湖北三江航天江北机械工程有限公司 | Gas cylinder with plastic liner and fully wound with fibers |
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| CN116557764B (en) | 2024-01-05 |
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