CN116045194B - Hydrogen storage tank sealing structure - Google Patents
Hydrogen storage tank sealing structure Download PDFInfo
- Publication number
- CN116045194B CN116045194B CN202310194917.9A CN202310194917A CN116045194B CN 116045194 B CN116045194 B CN 116045194B CN 202310194917 A CN202310194917 A CN 202310194917A CN 116045194 B CN116045194 B CN 116045194B
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- hydrogen storage
- storage tank
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 110
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000001257 hydrogen Substances 0.000 title claims abstract description 23
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
-
- 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
-
- 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 relates to the technical field of hydrogen storage tanks, in particular to a sealing structure of a hydrogen storage tank, which is arranged between a first sealing element and a second sealing element, wherein the top of the first sealing element is provided with a ring groove, the sealing structure is arranged in the ring groove, and the sealing structure comprises: the sealing ring is sleeved in the annular groove and used for sealing between the first sealing piece and the second sealing piece; the protection gasket is arranged in the ring groove and sleeved on the outer side of the sealing ring; the ring groove is also internally provided with the ring expanding assembly, and the ring expanding assembly is used for synchronously expanding the sealing ring.
Description
Technical Field
The invention relates to the technical field of hydrogen storage tanks, in particular to a sealing structure of a hydrogen storage tank.
Background
Conventionally, in a high-pressure hydrogen storage tank for a fuel cell vehicle or the like, in order to prevent leakage of hydrogen gas in the tank from a joint portion between one seal member and another seal member, a seal structure using an O-ring (rubber) is generally employed, in which the O-ring and a protection gasket are disposed in a groove formed in a joint surface of one seal member, and the O-ring is deformed by hydrogen gas pressure, and the deformed O-ring is brought into close contact with a bottom surface of the groove and a joint surface of the other seal member, thereby preventing leakage of hydrogen gas in the high-pressure hydrogen storage tank.
As shown in fig. 1, a sealing structure of a high-pressure hydrogen storage tank disclosed in a prior art chinese patent publication No. CN217540352U is shown, in which a bottom wall of a ring groove is set to be an inclined plane, so that air pressure deforms the ring groove when impacting a sealing ring to ensure tightness.
However, in the actual use process, because the pressure of each point in the sealing part is different when the hydrogen in the sealing part is filled, the sealing ring is extremely easy to deviate or the whole sealing part is not deformed synchronously, so that the whole sealing effect is influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a sealing structure of a hydrogen storage tank.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a hydrogen storage tank seal structure installs between first sealing member and second sealing member, wherein, the top of first sealing member has a annular, this seal structure install in the annular, this seal structure includes:
the sealing ring is sleeved in the annular groove and used for sealing between the first sealing piece and the second sealing piece;
the protection gasket is arranged in the ring groove and sleeved on the outer side of the sealing ring;
and the ring groove is internally provided with a ring expanding assembly which is used for driving the sealing ring to synchronously expand relative to the central axis of the sealing ring.
Further, the ring expanding assembly comprises a sliding ring located in the annular groove, a plurality of through holes communicated with the annular groove are formed in the inner side face of the first sealing piece, a driving part is arranged at the top end of the sliding ring, and the driving part is in contact with the inner peripheral side of the sealing ring.
Furthermore, the driving part is a frustum part, so that when the slip ring ascends, the frustum part is matched with the protection gasket to realize extrusion of the sealing ring.
Further, the piston further comprises a piston plate fixedly arranged at the bottom of the sliding ring and used for sealing the sliding ring between the annular grooves.
Further, a plurality of elastic pieces are further arranged between the bottom of the piston piece and the bottom of the inner side of the ring groove, and the elastic pieces are used for resetting the slip ring when air pressure disappears.
Further, the elastic piece is a rubber column, two ends of the rubber column are respectively connected with the bottom wall of the annular groove and the bottom surface of the piston sheet, and deformation holes are further formed in the peripheral surface of the rubber column in a penetrating mode.
Further, the through holes are symmetrically provided with two groups along the inner wall of the first sealing element so as to respectively form a first air inlet part and a second air inlet part for driving the slip ring to move.
Further, a synchronization mechanism is further arranged on the inner side of the first sealing piece, the synchronization mechanism synchronously keeps the two sides of the slip ring to synchronously move, and the synchronization mechanism is located between the first air inlet part and the second air inlet part.
Further, the synchronous mechanism comprises a rotating shaft which is rotationally connected to the inner side of the slip ring, two groups of gears are fixedly arranged on the outer side of the rotating shaft, racks which are respectively meshed with the two gears are symmetrically arranged on the inner side of the first sealing piece, and a sliding groove for the sliding of the rotating shaft is further formed in the inner side of the first sealing piece.
Further, the sealing ring is an O-shaped rubber ring, and the protection gasket is a resin ring.
The sealing structure of the hydrogen storage tank has the beneficial effects that:
the expansion ring assembly is used for realizing synchronous expansion of the sealing ring, when the sealing ring is compressed and pressed in the hydrogen storage tank under high pressure in actual use, the expansion operation is further carried out through the expansion ring assembly at the moment, so that the outer peripheral surface of the sealing ring can be extruded everywhere, the tightness is greatly ensured, and the problem of air leakage caused by offset or asynchronous deformation of the sealing ring in the prior art is avoided;
secondly, by adopting the design of the elastic piece, the invention can ensure that the sealing ring is reset to the initial state by resetting the sliding ring after each time of driving the sealing ring to deform, thereby ensuring the subsequent sealing operation.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the area A of FIG. 2;
FIG. 4 is a schematic view of the seal ring of the present invention;
FIG. 5 is an enlarged schematic view of the area B of FIG. 4;
fig. 6 is a schematic structural view of the slip ring of the present invention.
In the figure: 1. a first seal; 11. a ring groove; 12. a through hole; 2 a second seal; 3. a seal ring; 4. a protective gasket; 5. a ring expanding assembly; 51. a slip ring; 52. a driving section; 53. a piston plate; 54. an elastic member; 55. a deformation hole; 6. a synchronizing mechanism; 61. a rotating shaft; 62. a gear; 63. a rack; 64. and a sliding groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 2 to 6, a hydrogen storage tank sealing structure installed between a first sealing member 1 and a second sealing member 2, wherein the top of the first sealing member 1 has a ring groove 11, the sealing structure is installed in the ring groove 11, the sealing structure comprising:
the sealing ring 3 is sleeved in the annular groove 11 and is used for sealing between the first sealing piece 1 and the second sealing piece 2, and in the embodiment of the invention, the sealing ring 3 is an O-shaped rubber ring;
the protection gasket 4 is installed in the annular groove 11 and sleeved on the outer side of the sealing ring 3, and the protection gasket 4 is a resin ring in the embodiment;
wherein, ring groove 11 is provided with expansion ring assembly 5, and expansion ring assembly 5 is used for driving the everywhere of sealing ring 3 to expand synchronously relative to its central axis.
According to the invention, the expansion ring assembly 5 is used for realizing synchronous expansion of the sealing ring 3, when the sealing ring 3 is compressed and pressed in a hydrogen storage tank under high pressure in actual use, the expansion operation is further carried out through the expansion ring assembly 5 at the moment, so that the outer peripheral surface of the sealing ring 3 can be extruded everywhere, the tightness is greatly ensured, and the problem of air leakage caused by offset or asynchronous deformation of the sealing ring 3 in the prior art is avoided.
Referring to fig. 3 and 6, further, the ring expanding assembly 5 of the present invention comprises a sliding ring 51 located in the ring groove 11, a plurality of through holes 12 communicating with the ring groove 11 are formed on the inner side surface of the first sealing member 1, wherein the top end of the sliding ring 51 is provided with a driving portion 52, the driving portion 52 contacts with the inner peripheral side of the sealing ring 3, and secondly, considering the tightness of the sliding ring 51 contacting with gas, the present invention further comprises a piston plate 53 fixedly installed at the bottom of the sliding ring 51 for sealing the sliding ring 51 between the ring grooves 11.
When the high-pressure sealing device is particularly in operation, when the space between the first sealing element 1 and the second sealing element 2 is filled with high pressure, the sealing ring 3 is firstly outwards expanded and deformed, and at the moment, the high pressure synchronously drives the piston piece 53 so as to push the sliding ring 51 to move upwards, and after the sliding ring 51 is driven by the driving part 52, the synchronous expansion of the sealing ring 3 is realized, so that a better sealing effect is further realized.
Referring to fig. 6, it is exemplary that, in the embodiment of the present invention, the driving portion 52 is a frustum portion, and in the present invention, a plurality of slots may be formed on the frustum portion at equal intervals, so as to save materials and weights, and when the slip ring 51 ascends, the frustum portion cooperates with the protection gasket 4 to realize extrusion of the sealing ring 3.
On the basis of the above embodiment, a plurality of elastic members 54 are further provided between the bottom of the piston plate 53 and the bottom of the inner side of the ring groove 11, and the elastic members 54 are used for resetting the slip ring 51 when the air pressure is eliminated.
Since the ground of the ring groove 11 is set to be in a slope structure in the prior art, when the sealing ring 3 is pressed and clamped between the slope and the second sealing member 2 after being pressed and deformed, the sealing ring cannot be reset after the shape is maintained, and thus the problem of air leakage easily occurs during subsequent sealing.
Referring to fig. 2, in more detail, the elastic member 54 is a rubber column, two ends of the rubber column are respectively connected with the bottom wall of the ring groove 11 and the bottom surface of the piston 53, wherein the outer peripheral surface of the rubber column is further provided with a deformation hole 55, the deformation hole 55 is designed, the deformation capability of the rubber column is greatly ensured, and in this embodiment, the deformation hole 55 is designed as a round hole.
Referring to fig. 4, in the present invention, two groups of through holes 12 are symmetrically disposed along the inner wall of the first sealing member 1 to form a first air inlet portion and a second air inlet portion for driving the sliding ring 51 to move.
Referring to fig. 4 and 5, in order to ensure that both sides of the slip ring 51 can move synchronously, so as to avoid the problem of jamming caused by too fast or too large stress on one side, in the present invention, a synchronization mechanism 6 is further disposed on the inner side of the first sealing member 1, where the synchronization mechanism 6 synchronously maintains the two sides of the slip ring 51 to move synchronously, and the synchronization mechanism 6 is located between the first air inlet portion and the second air inlet portion.
Specifically, the synchronization mechanism 6 includes a rotating shaft 61 rotatably connected to the inner side of the slip ring 51, and two sets of gears 62 are fixedly installed on the outer side of the rotating shaft 61, wherein racks 63 respectively meshed with the two gears 62 are symmetrically disposed on the inner side of the first sealing member 1, and a sliding groove 64 for sliding the rotating shaft 61 is further disposed on the inner side of the first sealing member 1.
In actual operation, when the air pressures of the first air inlet portion and the second air inlet portion are different, and one side moves first, the gear 62 on the side is meshed with the rack 63 at this time to drive the rotating shaft 61 to rotate, and the rotating shaft 61 drives the gear 62 on the other side to mesh with the rack 63 at this time, so that the synchronous movement effect of the two sides of the whole slip ring 61 is ensured.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. A hydrogen storage tank seal structure, install between first sealing member (1) and second sealing member (2), wherein, the top of first sealing member (1) has an annular (11), this seal structure install in annular (11), its characterized in that, this seal structure includes:
the sealing ring (3) is sleeved in the annular groove (11) and is used for sealing between the first sealing piece (1) and the second sealing piece (2);
the protection gasket (4) is arranged in the annular groove (11) and sleeved on the outer side of the sealing ring (3);
the ring groove (11) is also provided with a ring expanding assembly (5), and the ring expanding assembly (5) is used for driving the sealing ring (3) to synchronously expand relative to the central axis of the sealing ring; the ring expanding assembly (5) comprises a slip ring (51) positioned in the ring groove (11), wherein a plurality of through holes (12) communicated with the ring groove (11) are formed in the inner side surface of the first sealing piece (1), the top end of the slip ring (51) is provided with a driving part (52), and the driving part (52) is contacted with the inner peripheral side of the sealing ring (3); the driving part (52) is a frustum part, so that when the slip ring (51) ascends, the frustum part is matched with the protection gasket (4) to realize extrusion of the sealing ring (3);
two groups of through holes (12) are symmetrically arranged along the inner wall of the first sealing piece (1) so as to respectively form a first air inlet part and a second air inlet part for driving the sliding ring (51) to move.
2. The hydrogen storage tank sealing structure according to claim 1, wherein: and a piston plate (53), wherein the piston plate (53) is fixedly arranged at the bottom of the sliding ring (51) and is used for realizing the sealing between the sliding ring (51) and the annular groove (11).
3. The hydrogen storage tank sealing structure according to claim 2, wherein: a plurality of elastic pieces (54) are further arranged between the bottom of the piston piece (53) and the inner bottom of the annular groove (11), and the elastic pieces (54) are used for resetting the sliding ring (51) when air pressure disappears.
4. A hydrogen storage tank sealing structure according to claim 3, wherein: the elastic piece (54) is a rubber column, two ends of the rubber column are respectively connected with the bottom wall of the annular groove (11) and the bottom surface of the piston piece (53), and deformation holes (55) are formed in the outer peripheral surface of the rubber column in a penetrating mode.
5. The hydrogen storage tank sealing structure according to claim 1, wherein: a synchronizing mechanism (6) is further arranged on the inner side of the first sealing piece (1), the synchronizing mechanism (6) synchronously keeps two sides of the sliding ring (51) to synchronously move, and the synchronizing mechanism (6) is located between the first air inlet portion and the second air inlet portion.
6. The hydrogen storage tank sealing structure according to claim 5, wherein: the synchronous mechanism (6) comprises a rotating shaft (61) which is rotationally connected to the inner side of the slip ring (51), two groups of gears (62) are fixedly arranged on the outer side of the rotating shaft (61), racks (63) which are respectively meshed with the two gears (62) are symmetrically arranged on the inner side of the first sealing piece (1), and a sliding groove (64) for sliding the rotating shaft (61) is further formed in the inner side of the first sealing piece (1).
7. The hydrogen storage tank sealing structure according to claim 1, wherein: the sealing ring (3) is an O-shaped rubber ring, and the protection gasket (4) is a resin ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310194917.9A CN116045194B (en) | 2023-03-03 | 2023-03-03 | Hydrogen storage tank sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310194917.9A CN116045194B (en) | 2023-03-03 | 2023-03-03 | Hydrogen storage tank sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116045194A CN116045194A (en) | 2023-05-02 |
| CN116045194B true CN116045194B (en) | 2023-11-17 |
Family
ID=86133281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310194917.9A Active CN116045194B (en) | 2023-03-03 | 2023-03-03 | Hydrogen storage tank sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116045194B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121550A (en) * | 2010-09-29 | 2011-07-13 | 拉卡萨安吉拉股份有限公司 | Quick pipeline connecting method and joint using same |
| CN111051867A (en) * | 2017-09-11 | 2020-04-21 | Ｋｙｂ株式会社 | Fluid property detection device |
| CN210423754U (en) * | 2019-05-15 | 2020-04-28 | 沧州华意科技有限公司 | Valve sealing structure |
| CN112681998A (en) * | 2021-01-18 | 2021-04-20 | 西安科采能源装备有限公司 | Sulfur-proof acid-resistant high-temperature and high-pressure packer rubber sleeve and packer |
| CN216243531U (en) * | 2021-11-17 | 2022-04-08 | 西安交通大学 | Detachable sealing tank structure |
| CN217540352U (en) * | 2022-06-30 | 2022-10-04 | 丰田自动车株式会社 | Sealing structure of high-pressure hydrogen storage tank |
-
2023
- 2023-03-03 CN CN202310194917.9A patent/CN116045194B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121550A (en) * | 2010-09-29 | 2011-07-13 | 拉卡萨安吉拉股份有限公司 | Quick pipeline connecting method and joint using same |
| CN111051867A (en) * | 2017-09-11 | 2020-04-21 | Ｋｙｂ株式会社 | Fluid property detection device |
| CN210423754U (en) * | 2019-05-15 | 2020-04-28 | 沧州华意科技有限公司 | Valve sealing structure |
| CN112681998A (en) * | 2021-01-18 | 2021-04-20 | 西安科采能源装备有限公司 | Sulfur-proof acid-resistant high-temperature and high-pressure packer rubber sleeve and packer |
| CN216243531U (en) * | 2021-11-17 | 2022-04-08 | 西安交通大学 | Detachable sealing tank structure |
| CN217540352U (en) * | 2022-06-30 | 2022-10-04 | 丰田自动车株式会社 | Sealing structure of high-pressure hydrogen storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116045194A (en) | 2023-05-02 |
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