CN217714554U - Hydrogen storage tank with safeguard function - Google Patents
Hydrogen storage tank with safeguard function Download PDFInfo
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- CN217714554U CN217714554U CN202221692756.3U CN202221692756U CN217714554U CN 217714554 U CN217714554 U CN 217714554U CN 202221692756 U CN202221692756 U CN 202221692756U CN 217714554 U CN217714554 U CN 217714554U
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- holding vessel
- hydrogen
- storage tank
- hydrogen storage
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- 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 utility model discloses a hydrogen holding vessel with safeguard function, including the protective housing, the top of protective housing is provided with the apron, the window has been seted up at the middle part of apron, the bottom is provided with a plurality of electric telescopic handle in the protective housing, electric telescopic handle's flexible end is provided with fixture, fixture's top is provided with the hydrogen holding vessel, the bottom of apron is provided with the push-and-pull subassembly with hydrogen holding vessel matched with, the protective housing openly is provided with the controller, the top middle part of hydrogen holding vessel is provided with the gas injection mouth, one side of gas injection mouth is provided with the manometer, a plurality of vents have been seted up to the both sides wall symmetry of protective housing. The utility model has the advantages of reasonable and reliable structure, easy operation can play fixed the hydrogen holding vessel when, can also satisfy and carry out the fixed action to the hydrogen holding vessel of equidimension not, can also carry out better protection to it in the hydrogen holding vessel transportation simultaneously, avoids receiving the damage, and then has improved factor of safety, and the suitability is wider.
Description
Technical Field
The utility model relates to a technical field is stored to hydrogen, particularly, relates to a hydrogen holding vessel with safeguard function.
Background
Hydrogen is the lightest gas known in the world, the density of the hydrogen is very small, only 1/14 of air, namely the density of the hydrogen at 0 ℃ is 0.0899g/L under the standard atmospheric pressure, so that the hydrogen can be used as the filling gas of the airship, the hydrogen is mainly used as a reducing agent, a hydrogen storage tank is a tank body for filling the hydrogen, the maximum use temperature of the common hydrogen storage tank is 60 ℃, and the direct irradiation of the sun needs to be avoided in places where the hydrogen is dry, well ventilated, cool and far away from corrosive substances when in use.
For example, patent No. CN212960876U a hydrogen holding vessel with safeguard function, including inner tank and outer jar, the week side of inner tank has the heat preservation around the package, the internal surface of outer jar is fixed with the insulating layer, be formed with the cavity between insulating layer and the heat preservation, week side fixed mounting of outer jar has a plurality of fixed frames, the inside sliding fit of fixed frame has the buffer board, one side of buffer board is fixed with the rubber slab, the inside of fixed frame is fixed with the gasbag, the bottom of outer jar is fixed with the base, the base is open-top's cavity board, the lower fixed surface of base has the slipmat, be fixed with a plurality of damper between base and the outer jar.
However, the hydrogen storage tank has the following disadvantages: through the cooperation use of damper and base, though can effectively cushion the impact force that the holding vessel received vertical direction, in the transportation, because jolting of automobile body, make the holding vessel can not obtain better protection stability, cause the phenomenon that the collision fell down easily, reduced the life of holding vessel, reduced factor of safety.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The hydrogen holding vessel with safeguard function is not enough to prior art, the utility model provides a hydrogen holding vessel with safeguard function possesses the advantage that the holding vessel has better stability and security in the transportation, and then solves the savings box and can not obtain better protection stability in the transportation, causes the phenomenon that the collision fell easily, has reduced the problem of the life of holding vessel.
(II) technical scheme
For realizing that above-mentioned holding vessel has the advantage of better stability and security in the transportation, the utility model discloses a concrete technical scheme as follows:
the utility model provides a hydrogen holding vessel with safeguard function, including the protective housing, the top of protective housing is provided with the apron, the window has been seted up at the middle part of apron, the bottom is provided with a plurality of electric telescopic handle in the protective housing, electric telescopic handle's flexible end is provided with fixture, fixture's top is provided with the hydrogen holding vessel, the bottom of apron is provided with the push-and-pull subassembly with hydrogen holding vessel matched with, the protective housing openly is provided with the controller, the top middle part of hydrogen holding vessel is provided with the gas injection mouth, one side of gas injection mouth is provided with the manometer, hydrogen holding vessel top both sides are provided with the handle, a plurality of vents have been seted up to the both sides wall symmetry of protective housing.
Further, can fix the hydrogen holding vessel in order to realize, can also adapt to the hydrogen holding vessel of equidimension not and carry out the fixed work simultaneously, make can effectually prevent that the hydrogen holding vessel from bumping phenomenon in the transportation, and then the life of hydrogen holding vessel has been improved, fixture is including setting up the disc at the flexible end of electric telescopic handle, the bottom middle part of disc is provided with the spliced pole, the outside cover of spliced pole is equipped with square piece, a plurality of spouts have been seted up in the circumference outside of disc, all be provided with the slider in the spout, and be connected through L shape connecting rod between slider and the square piece, wherein connect through a plurality of hydraulic telescoping rod between two symmetrical sliders.
Further, in order to make the slider can synchronous motion, make and carry out spacing fixed to the hydrogen holding vessel, thereby the stability and the suitability of fixture have been guaranteed, and then factor of safety has been strengthened, the bottom middle part of square piece has been seted up with spliced pole matched with through-hole, the both sides bottom at the both ends of square piece all is provided with fixed column one, the both sides wall of slider has all been seted up with spout matched with recess, bottom one side of slider is provided with fixed column two, wherein the bottom opposite side of two sliders is provided with upright piece, the bottom both sides of upright piece all are provided with the connecting rod one with hydraulic telescoping rod matched with, the tip of the one end of L shape connecting rod is provided with the ring one with fixed column one matched with, the tip of the other end of L shape connecting rod is provided with the ring two with fixed column two matched with, the top of slider is provided with arc limiting plate.
Further, in order to make can play better guard action to the hydrogen holding vessel in the transportation, make and can not cause the collision to damage it, and then the life of hydrogen holding vessel has been improved, and the maintenance cost is reduced, the push-and-pull subassembly is including setting up the installation piece in the four corners department of apron bottom, connect through connecting rod two between two liang of installation pieces, the middle part of connecting rod two all overlaps and is equipped with the stopper, the outside all covers of circumference of the both sides of stopper is kept away from to connecting rod two is equipped with the sliding block, all be connected with the baffle between two liang of sliding blocks, top one side of baffle is provided with the push-and-pull plate, and the push-and-pull plate is located the window.
Furthermore, in order to enable the two groups of baffles to move synchronously, threaded limiting grooves are formed in the peripheries of the two ends of the connecting rod, the thread directions of the threaded limiting grooves at the two ends are opposite, and one side wall of the sliding block is provided with a limiting column matched with the threaded limiting grooves.
(III) advantageous effects
Compared with the prior art, the utility model provides a hydrogen holding vessel with safeguard function possesses following beneficial effect:
(1) The utility model has the advantages of reasonable and reliable structure, easy operation can play fixed the hydrogen holding vessel when, can also satisfy and carry out the fixed action to the hydrogen holding vessel of equidimension not, can also carry out better protection to it in the hydrogen holding vessel transportation simultaneously, avoids receiving the damage, and then has improved factor of safety, and the suitability is wider.
(2) Through setting up fixture, can fix the hydrogen holding vessel in order to realize, can also adapt to the hydrogen holding vessel of equidimension not simultaneously and carry out fixed work, make can effectually prevent that the hydrogen holding vessel from bumping the phenomenon in the transportation, thereby the life of hydrogen holding vessel has been improved, make the slider can the simultaneous movement, make and to carry out spacing fixed to the hydrogen holding vessel, thereby fixture's stability and suitability have been guaranteed, and then factor of safety has been strengthened.
(3) Through setting up the push-and-pull subassembly, make can play better guard action to the hydrogen holding vessel in the transportation for can not cause the collision damage to it, and then improve the life of hydrogen holding vessel, reduce cost of maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 2 is a three-dimensional assembly of a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cover plate in a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a push-pull assembly in a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a baffle plate in a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a clamping mechanism in a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a square block in a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a slider in a hydrogen storage tank with a protection function according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an L-shaped connecting rod in a hydrogen storage tank with a protection function according to an embodiment of the present invention.
In the figure:
1. a protective shell; 2. a cover plate; 3. a window; 4. an electric telescopic rod; 5. a clamping mechanism; 501. a disc; 502. connecting columns; 503. a square block; 504. a chute; 505. a slider; 506. an L-shaped connecting rod; 507. A hydraulic telescopic rod; 508. a through hole; 509. fixing a first column; 510. a groove; 511. fixing a second column; 512. Erecting a block; 513. a first connecting rod; 514. a first circular ring; 515. a second circular ring; 516. an arc limiting plate; 6. A hydrogen storage tank; 7. a push-pull assembly; 701. mounting blocks; 702. a second connecting rod; 703. a limiting block; 704. A slider; 705. a baffle plate; 706. a push-pull plate; 707. a thread limiting groove; 708. a limiting column; 8. A controller; 9. a gas injection port; 10. a pressure gauge; 11. a handle; 12. an air vent.
Detailed Description
For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.
According to the utility model discloses an embodiment provides a hydrogen holding vessel with safeguard function.
It is right with specific embodiment now to combine the attached drawing the utility model discloses further explain, as shown in fig. 1-9, according to the utility model discloses a hydrogen holding vessel with safeguard function, including protective housing 1, protective housing 1's top is provided with apron 2, window 3 has been seted up at the middle part of apron 2, the bottom is provided with a plurality of electric telescopic handle 4 in the protective housing 1, electric telescopic handle 4's flexible end is provided with fixture 5, fixture 5's top is provided with hydrogen holding vessel 6, the bottom of apron 2 is provided with the push-and-pull subassembly 7 with hydrogen holding vessel 6 matched with, protective housing 1 openly is provided with controller 8, the top middle part of hydrogen holding vessel 6 is provided with gas injection mouth 9, one side of gas injection mouth 9 is provided with manometer 10, 6 top both sides of hydrogen holding vessel are provided with handle 11, a plurality of 12 have been seted up to the both sides wall symmetry of protective housing 1.
By means of the above-mentioned technical scheme, through setting up fixture 5, can fix hydrogen holding vessel 6 in order to realize, can also adapt to not hydrogen holding vessel 6 of equidimension simultaneously and carry out fixed work, make can effectually prevent hydrogen holding vessel 6 collision phenomenon in the transportation, thereby the life of hydrogen holding vessel 6 has been improved, make slider 505 can synchronous motion, make can carry out spacing fixed to hydrogen holding vessel 6, thereby fixture 5's stability and suitability have been guaranteed, and then factor of safety has been strengthened. Through setting up push-and-pull subassembly 7, make can play better guard action to hydrogen holding vessel 6 in the transportation for can not cause the collision damage to it, and then improve hydrogen holding vessel 6's life, reduce cost of maintenance.
In an embodiment, for above-mentioned fixture 5, fixture 5 is including setting up the disc 501 at the flexible end of electric telescopic handle 4, the bottom middle part of disc 501 is provided with spliced pole 502, the outside cover of spliced pole 502 is equipped with square piece 503, a plurality of spouts 504 have been seted up in the circumference outside of disc 501, all be provided with slider 505 in the spout 504, and be connected through L shape connecting rod 506 between slider 505 and the square piece 503, wherein connect through a plurality of hydraulic telescopic links 507 between two symmetrical sliders 505, make can realize fixing hydrogen holding vessel 6, can also adapt to not hydrogen holding vessel 6 of equidimension simultaneously and carry out fixed work, make can effectually prevent that hydrogen holding vessel 6 from taking place the phenomenon of collision in the transportation, and then improved hydrogen holding vessel 6's life.
In an embodiment, for the square block 503, a through hole 508 matched with the connecting column 502 is formed in the middle of the bottom end of the square block 503, fixing columns first 509 are arranged at the bottoms of two sides of two ends of the square block 503, grooves 510 matched with the sliding grooves 504 are formed in two side walls of the sliding block 505, fixing columns second 511 are arranged on one side of the bottom end of the sliding block 505, standing blocks 512 are arranged on the other side of the bottom end of the two sliding blocks 505, connecting rods first 513 matched with the hydraulic telescopic rods 507 are arranged on two sides of the bottom end of the standing blocks 512, a circular ring first 514 matched with the fixing columns first 509 is arranged at the end of one end of the L-shaped connecting rod 506, a circular ring second 515 matched with the fixing columns second 511 is arranged at the end of the other end of the L-shaped connecting rod 506, an arc limiting plate 516 is arranged at the top end of the sliding block 505, the sliding block 505 can move synchronously, the hydrogen storage tank 6 can be limited and fixed, stability and applicability of the clamping mechanism 5 are guaranteed, and safety factor is increased.
In an embodiment, for the above push-pull assembly 7, the push-pull assembly 7 includes the mounting blocks 701 disposed at the four corners of the bottom end of the cover plate 2, two pairs of the mounting blocks 701 are connected through the second connecting rod 702, the middle portions of the second connecting rod 702 are respectively sleeved with the limiting block 703, the second connecting rod 702 is respectively sleeved with the sliding block 704 outside the circumferences of the two sides far away from the limiting block 703, the two pairs of the sliding blocks 704 are respectively connected with the baffle 705, the push-pull plate 706 is disposed on one side of the top end of the baffle 705, and the push-pull plate 706 is located in the window 3, so that the hydrogen storage tank 6 can be better protected during transportation, collision damage cannot be caused to the hydrogen storage tank 6, the service life of the hydrogen storage tank 6 is prolonged, and the maintenance cost is reduced.
In one embodiment, for the second connecting rod 702, the two ends of the second connecting rod 702 are externally provided with a threaded limiting groove 707, the thread directions of the two threaded limiting grooves 707 are opposite, and one side wall of the sliding block 704 is provided with a limiting post 708 matched with the threaded limiting groove 707, so that the two sets of baffles 705 can move synchronously. In addition, in specific application, in order to ensure the stability and the fluency of the baffle 705 in the moving process, the second connecting rod 702, the limiting block 703 and the mounting block 701 are connected through bearings.
For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.
In practical application, when the hydrogen storage tank 6 needs to be used, a worker pulls the push-pull plate 706 outwards by hand to enable the threaded limiting groove 707 on the second connecting rod 702 to drive the two groups of baffles 705 to synchronously move outwards under the action of the limiting column 708 on the side wall of the sliding block 704, so that the window 3 is opened, then the controller 8 starts the electric telescopic rod 4 to drive the clamping mechanism 5 to move upwards, the clamping mechanism 5 drives the hydrogen storage tank 6 to move upwards to the upper part of the window 3, then the hydrogen storage tank 6 can be inflated through the air injection port 9, after the window is full of hydrogen is filled, the controller 8 starts the electric telescopic rod 4 to recover to drive the clamping mechanism 5 to move downwards, the clamping mechanism 5 drives the hydrogen storage tank 6 to move downwards to the lower part of the window 3, and then the worker pulls the push-pull plate 706 inwards by hand to enable the threaded limiting groove 707 on the second connecting rod 702 to drive the two groups of baffles 705 to synchronously move inwards under the action of the limiting column 708 on the side wall of the sliding block 704, so that the window 3 is closed, and the protection effect on the hydrogen storage tank 6 can be completed;
when the hydrogen storage tank 6 needs to be operated, the hydrogen storage tank 6 can be prevented from colliding and falling in the transportation process by fixing the hydrogen storage tank through the clamping mechanism 5, the service life of the hydrogen storage tank 6 is prolonged, and the safety factor is improved;
the working principle of the clamping mechanism 5 is as follows: start hydraulic telescoping rod 507 through controller 8, thereby make hydraulic telescoping rod 507 extend, and then make the increase of distance between two symmetrical sliders 505, and then drive L shape connecting rod 506 through slider 505 and remove, and then drive square piece 503 and rotate, and then make two other sliders 505 slide in spout 504, and then make and to carry out synchronous motion between the slider 505, and then drive arc limiting plate 516 and carry out the outward motion simultaneously, and then can satisfy and carry out centre gripping fixed action to the hydrogen holding vessel 6 of equidimension not.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a hydrogen storage tank with safeguard function, includes protective housing (1), its characterized in that:
a cover plate (2) is arranged at the top end of the protective shell (1), a window (3) is formed in the middle of the cover plate (2), a plurality of electric telescopic rods (4) are arranged at the bottom end of the protective shell (1), and clamping mechanisms (5) are arranged at the telescopic ends of the electric telescopic rods (4);
the top of fixture (5) is provided with hydrogen holding vessel (6), the bottom of apron (2) be provided with hydrogen holding vessel (6) matched with push-and-pull subassembly (7), protective housing (1) openly is provided with controller (8), the top middle part of hydrogen holding vessel (6) is provided with gas injection mouth (9), one side of gas injection mouth (9) is provided with manometer (10), hydrogen holding vessel (6) top both sides are provided with handle (11), a plurality of vents (12) have been seted up to the both sides wall symmetry of protective housing (1).
2. The hydrogen storage tank with the protection function according to claim 1, wherein the clamping mechanism (5) comprises a disc (501) arranged at the telescopic end of the electric telescopic rod (4), a connecting column (502) is arranged in the middle of the bottom end of the disc (501), a square block (503) is sleeved outside the connecting column (502), a plurality of sliding grooves (504) are formed in the outer side of the circumference of the disc (501), sliding blocks (505) are arranged in the sliding grooves (504), the sliding blocks (505) and the square block (503) are connected through L-shaped connecting rods (506), and two symmetrical sliding blocks (505) are connected through a plurality of hydraulic telescopic rods (507).
3. The hydrogen storage tank with the protection function as claimed in claim 2, wherein a through hole (508) matched with the connecting column (502) is formed in the middle of the bottom end of the square block (503), and fixing columns (509) are arranged at the bottoms of two sides of two ends of the square block (503).
4. The hydrogen storage tank with the protection function according to claim 3, wherein two side walls of the sliding block (505) are provided with grooves (510) matched with the sliding grooves (504), one side of the bottom end of the sliding block (505) is provided with a second fixing column (511), the other side of the bottom ends of the two sliding blocks (505) is provided with a vertical block (512), and two sides of the bottom end of the vertical block (512) are provided with a first connecting rod (513) matched with the hydraulic telescopic rod (507).
5. The hydrogen storage tank with the protection function according to claim 4, wherein the end of one end of the L-shaped connecting rod (506) is provided with a first circular ring (514) matched with the first fixing column (509), the end of the other end of the L-shaped connecting rod (506) is provided with a second circular ring (515) matched with the second fixing column (511), and the top end of the sliding block (505) is provided with an arc-shaped limiting plate (516).
6. The hydrogen storage tank with the protection function according to claim 1, wherein the push-pull assembly (7) comprises mounting blocks (701) arranged at four corners of the bottom end of the cover plate (2), every two mounting blocks (701) are connected through a second connecting rod (702), and the middle parts of the second connecting rods (702) are sleeved with limit blocks (703);
sliding blocks (704) are sleeved outside the circumferences of two sides, far away from the limiting block (703), of the second connecting rod (702), a baffle (705) is connected between every two sliding blocks (704), a push-pull plate (706) is arranged on one side of the top end of the baffle (705), and the push-pull plate (706) is located in the window (3).
7. The hydrogen storage tank with the protection function as claimed in claim 6, wherein the two ends of the second connecting rod (702) are externally provided with a threaded limiting groove (707) at the circumference, the threaded direction of the threaded limiting grooves (707) at the two ends is opposite, and a limiting column (708) matched with the threaded limiting groove (707) is arranged on one side wall of the sliding block (704).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221692756.3U CN217714554U (en) | 2022-07-01 | 2022-07-01 | Hydrogen storage tank with safeguard function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221692756.3U CN217714554U (en) | 2022-07-01 | 2022-07-01 | Hydrogen storage tank with safeguard function |
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| CN217714554U true CN217714554U (en) | 2022-11-01 |
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| CN202221692756.3U Active CN217714554U (en) | 2022-07-01 | 2022-07-01 | Hydrogen storage tank with safeguard function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117404601A (en) * | 2023-12-14 | 2024-01-16 | 内蒙古东景生物环保科技有限公司 | Assembled acetylene container transportation frame |
| CN117628398A (en) * | 2023-12-04 | 2024-03-01 | 水之氢新能源科技(合肥)有限公司 | Solid-state hydrogen storage device |
| CN117628398B (en) * | 2023-12-04 | 2024-05-14 | 水之氢新能源科技(合肥)有限公司 | Solid-state hydrogen storage device |
-
2022
- 2022-07-01 CN CN202221692756.3U patent/CN217714554U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117628398A (en) * | 2023-12-04 | 2024-03-01 | 水之氢新能源科技(合肥)有限公司 | Solid-state hydrogen storage device |
| CN117628398B (en) * | 2023-12-04 | 2024-05-14 | 水之氢新能源科技(合肥)有限公司 | Solid-state hydrogen storage device |
| CN117404601A (en) * | 2023-12-14 | 2024-01-16 | 内蒙古东景生物环保科技有限公司 | Assembled acetylene container transportation frame |
| CN117404601B (en) * | 2023-12-14 | 2024-03-29 | 内蒙古东景生物环保科技有限公司 | Assembled acetylene container transportation frame |
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