CN217559552U - Large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank - Google Patents
Large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank Download PDFInfo
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- CN217559552U CN217559552U CN202221611162.5U CN202221611162U CN217559552U CN 217559552 U CN217559552 U CN 217559552U CN 202221611162 U CN202221611162 U CN 202221611162U CN 217559552 U CN217559552 U CN 217559552U
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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
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Abstract
The utility model relates to a large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank, include: the pile foundation is fixed with the ground, and a bearing platform is arranged on the pile foundation; the tank bottom cold insulation layer is arranged on the top of the bearing platform in a laminated manner; the bottom of the storage tank body is fixed with the cold insulation layer at the bottom of the tank, and a cavity for storing liquid hydrogen is formed in the storage tank body; the storage tank body comprises a prestressed concrete outer tank, a perlite layer, an elastic felt layer and an inner tank which are arranged from outside to inside in sequence; the metal ceiling is arranged at the top of the storage tank body, and the outer edge of the metal ceiling is connected with the perlite layer of the storage tank body; the prestressed concrete dome is arranged above the metal ceiling, and the outer edge of the prestressed concrete dome is fixed with the top of the prestressed concrete outer tank of the storage tank body; prestressed reinforcements are prefabricated in the prestressed concrete outer tank and the prestressed concrete dome of the pile foundation and the storage tank body. The utility model discloses can solve the problem of extensive low temperature storage liquid hydrogen, and pass through the airtight system of equipment ensures the safe and steady operation of low temperature storage liquid hydrogen equipment.
Description
Technical Field
The utility model relates to a liquid hydrogen storage container equipment technical field specifically is about a large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank.
Background
Energy is always a permanent topic of human development and also an important strategic resource of national development. In combination with the new energy sources currently available, hydrogen energy is consistently considered globally as the best energy source to replace fossil fuels. With the rapid development and industrialization of hydrogen fuel cells and electric vehicles, research and construction of hydrogen source technology and hydrogen energy infrastructure have attracted high attention in various countries. The development trend of the hydrogen energy industry is continuously good, the development of the hydrogen energy reaches a critical period, and the development of the hydrogen energy is gradually applied to large-scale application from the past 'future energy'.
Hydrogen is used as an ideal novel energy source, and the key for restricting the practicability and scale of the hydrogen is hydrogen storage. The hydrogen storage technologies that have gained wide attention at present mainly include high-pressure hydrogen storage, metal hydride hydrogen storage, and low-temperature liquid hydrogen storage. The low-temperature liquid hydrogen storage technology has the absolute advantage of large hydrogen storage density per unit mass and unit volume. The hydrogen liquefying and storing process includes compressing hydrogen gas, deep cooling to below 21K, liquefying to obtain liquid hydrogen, and storing in special heat insulating vacuum container. The density of the liquid hydrogen is 70.78kg/m 3 The standard hydrogen density is 0.08342kg/m 3 Nearly 850 times higher, even if hydrogen is compressed to 15MPa, even 35, 70MPa, the storage capacity per volume is not comparable to liquid storage. Low temperature liquid hydrogen storage is an ideal way to store hydrogen simply from the point of view of energy storage density.
However, at present, the low-temperature liquid storage technology in China is still in a lagging stage, and the low-temperature liquid storage devices cannot store liquid hydrogen in a large-scale low-temperature mode.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank can solve the problem of extensive low temperature storage liquid hydrogen, and pass through the airtight system of equipment ensures the safe and stable operation of low temperature storage liquid hydrogen equipment.
In order to achieve the purpose, the utility model adopts the following technical proposal:
large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank, include: the pile foundation is fixed with the ground, and a bearing platform is arranged on the pile foundation; the tank bottom cold insulation layer is arranged on the top of the bearing platform in a stacked mode; the bottom of the storage tank body is fixed with the tank bottom cold insulation layer, and a cavity for storing liquid hydrogen is formed in the storage tank body; the storage tank body comprises a prestressed concrete outer tank, a perlite layer, an elastic felt layer and an inner tank which are sequentially arranged from outside to inside; the metal ceiling is arranged at the top of the storage tank body, and the outer edge of the metal ceiling is connected with the perlite layer of the storage tank body; the prestressed concrete dome is arranged above the metal ceiling, and the outer edge of the prestressed concrete dome is fixed with the top of the prestressed concrete outer tank of the storage tank body; prestressed reinforcement is prefabricated in the pile foundation, the prestressed concrete outer tank of the storage tank body and the prestressed concrete dome.
The large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank is characterized in that a suspended ceiling with a corrugated structure is arranged between the edge of the metal suspended ceiling and the perlite layer.
The large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank is characterized in that a perlite baffle is arranged at the joint of the metal suspended ceiling and the perlite layer.
Preferably, the upper part of the metal ceiling is provided with a ceiling glass wool heat insulation layer; and a ceiling discharge port is arranged on the metal ceiling.
In the low-pressure liquid hydrogen concrete storage tank with the large suspended ceiling structure, preferably, a dome lining plate is arranged at the bottom of the prestressed concrete dome; a perlite filling opening is formed in one side of the prestressed concrete dome and penetrates through the prestressed concrete dome and then extends into the upper portion of the annular space of the perlite layer of the storage tank body.
The low-pressure liquid hydrogen concrete storage tank with the large-scale suspended ceiling structure preferably further comprises a feeding system, wherein the feeding system is used for feeding the storage tank body; the feeding system comprises a feeding pipe body, a first feeding pipeline and a second feeding pipeline; the feeding pipe body is arranged inside the storage tank body, and the bottom of the feeding pipe body is fixed with the bottom of the inner tank; the raw material is communicated with the feeding pipe body through a first feeding pipeline; the raw materials are communicated with the inner cavity of the storage tank body through a second feeding pipeline; the first feeding pipeline and the second feeding pipeline are respectively provided with a first valve.
The low-pressure liquid hydrogen concrete storage tank with the large-scale suspended ceiling structure preferably further comprises a pump output system for conveying internal liquid hydrogen out of the storage tank body; the pump output system comprises a pump well, a liquid hydrogen conveying pump and a first output pipeline; the pump well is arranged in the storage tank body, the liquid hydrogen delivery pump is arranged in the pump well, the liquid hydrogen delivery pump is connected with an external storage device through a first output pipeline, and a second valve is arranged on the first output pipeline.
The low-pressure liquid hydrogen concrete storage tank with the large-scale suspended ceiling structure preferably further comprises a hydrogen evaporation gas treatment system for removing excessive hydrogen evaporation gas; the hydrogen vaporization treatment system comprises a second output pipeline; the inner cavity of the storage tank body is connected with an external hydrogen collecting device through a second output pipeline.
The low-pressure liquid hydrogen concrete storage tank with the large suspended ceiling structure preferably further comprises an overpressure protection system, wherein the overpressure protection system is used for performing pressure control protection on the storage tank when the storage tank is in overpressure; the overpressure protection system includes a third output line and a pressure relief valve; the inner cavity of the storage tank body is connected with an external recovery pipe through a third output pipeline; and a pressure safety valve is arranged on the third output pipeline.
The low-pressure liquid hydrogen concrete storage tank with the large-scale suspended ceiling structure preferably further comprises a vacuum protection system, wherein the vacuum protection system is used for performing pressure control protection on the storage tank when the storage tank is under negative pressure; the vacuum protection system comprises an input pipeline and a vacuum safety valve; h 2 Or H e The inert gas is connected with the cavity of the storage tank body through an input pipeline; and a vacuum safety valve is arranged on the input pipeline.
The utility model discloses owing to take above technical scheme, it has following advantage:
(1) In the aspect of storage pressure, compared with the conventional low-temperature hydrocarbon large-scale prestressed concrete storage tank, the utility model has the advantages that the storage pressure is greatly improved, the general design pressure of the conventional storage tank is lower and is less than 29KPa (G), and only the prestressed reinforcement is arranged in the wall body of the outer tank wall; the utility model discloses storage tank pressure is 0.6MPa (G), and storage pressure is big.
(2) In the aspect of prestressed concrete design, the utility model discloses compare with the large-scale prestressed concrete storage tank of conventional low temperature hydrocarbon, prestressed concrete design accounts for than outstanding, and conventional storage tank only arranges the prestressed reinforcement in outer jar wall body, and the utility model discloses the storage tank equipartition has put the prestressed reinforcement in bottom cushion cap, outer jar wall body, top concrete dome, has strengthened outer tank bottom thickness in bottom pile cushion cap, outer jar wall connection department, has strengthened outer jar upper portion thickness in outer jar wall body and dome connection department to can realize the relatively higher storage tank structure operating pressure.
(3) In the aspect of storage tank storage volume, break through jar tolerance system, the utility model discloses the effective volume of storage can reach 27 ten thousand sides at most. Compared with the conventional spherical tank type of low-temperature hydrocarbon, the spherical tank type of low-temperature hydrocarbon breaks through the problems of design and transportation of bottom support stress, efficient utilization of plates, installation and welding, difficulty in reselecting the spherical tank type for a storage tank with larger volume, and the problem of large-volume storage of liquid hydrocarbon is solved;
(4) In the aspect of the concrete intensity, make full use of concrete tensile limit, the utility model discloses the storage can reach the highest design pressure 0.6MPa (G), and this pressure is high strength concrete tensile strength limit (general concrete resistance to compression and stretch-proofing not) basically.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like reference numerals refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a partially enlarged schematic view of the connection between the pile foundation and the storage tank body according to the present invention;
FIG. 4 is a partially enlarged schematic view of the connection of the metal ceiling, the prestressed concrete dome and the storage tank body according to the present invention;
fig. 5 is a schematic structural diagram of the corrugated suspended ceiling of the present invention.
The reference symbols in the drawings denote the following:
1-pile foundation; 2-prestressed concrete outer tank; 3-inner tank; 4-an elastic felt layer; 5-perlite layer; 6-tank bottom cold insulation layer; 7-metal ceiling; 8-a suspended ceiling glass wool heat insulation layer; 9-prestressed concrete dome; 10-dome liner plate; 11-perlite baffles; 12-a ceiling relief opening; 13-corrugated structure suspended ceiling; 14-perlite filling port; 15-a feed system; 16-pump delivery system; 17-a hydrogen boil-off gas treatment system; 18-an overpressure protection system; 19-vacuum protection system.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank connects through the cooperation of pile foundation, glass brick layer or PUF layer, storage tank body, metal furred ceiling and prestressed concrete dome, can solve the problem of extensive low temperature storage liquid hydrogen, and passes through the airtight system of equipment ensures the safe even running of low temperature storage liquid hydrogen equipment.
As shown in fig. 1 and 3, the utility model provides a large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank, include: the pile foundation 1 is fixed with the ground, and a bearing platform is arranged at the upper part of the pile foundation; the tank bottom cold insulation layer 6 is arranged on the top of the bearing platform in a laminated mode, wherein the tank bottom cold insulation layer 6 can be a glass brick layer or a PUF (polyurethane) layer; the bottom of the storage tank body is fixed with the tank bottom cold insulation layer 6, and a cavity for storing liquid hydrogen is formed in the storage tank body; the storage tank body comprises a prestressed concrete outer tank 2, a perlite layer 5, an elastic felt layer 4 and an inner tank 3 which are arranged from outside to inside in sequence; the metal ceiling 7 is arranged at the top of the storage tank body, and the outer edge of the metal ceiling is connected with the perlite layer 5 of the storage tank body; the prestressed concrete dome 9 is arranged above the metal ceiling 7, and the outer edge of the prestressed concrete dome is fixed with the top of the prestressed concrete outer tank 2 of the storage tank body; prestressed reinforcement is prefabricated in the pile foundation 1, the prestressed concrete outer tank 2 of the storage tank body and the prestressed concrete dome 9.
In the above embodiment, preferably, as shown in fig. 4 and 5, a corrugated structure ceiling 13 is provided between the edge of the metal ceiling 7 and the perlite layer 5. From this, can prevent that the furred ceiling from producing the shrink deformation under the difference in temperature effect, corrugated structure can effectively extend prevention furred ceiling structure shrink.
In the above embodiment, preferably, as shown in fig. 4, a perlite baffle 11 is provided at the junction of the metal ceiling 7 and the perlite layer 5. Wherein, the usable stainless steel net of pearlite baffle adds the fiber cloth material, from this, when can preventing to fill the pearlite, the pearlite gets into in the furred ceiling space.
In the above embodiment, preferably, the ceiling glass wool insulating layer 8 is arranged on the upper part of the metal ceiling 7, and the glass wool insulating layer can play a role in insulating heat, so that the ceiling space is prevented from being cooled; be provided with furred ceiling relief port 12 on the metal furred ceiling 7 (see fig. 2), the effort that makes the pressure differential production between the space about the metal furred ceiling 7 no longer than the weight of furred ceiling for in-tank and top atmospheric pressure balance is maintained during the storage tank operation, in order to avoid the furred ceiling to be lifted.
In the above embodiment, preferably, the bottom of the prestressed concrete dome 9 is provided with a dome liner plate 10; the dome liner plate 10 is made of austenitic stainless steel (304/304L/316/316L and the like) and has the thickness of 0.006m; the top beam frame is used for supporting and is used as a bottom mould for pouring prestressed concrete dome concrete; a perlite filling port 14 is formed in one side of the prestressed concrete dome, the perlite filling port 14 penetrates through the prestressed concrete dome 9 and then extends into the upper portion of an annular space of an perlite layer 5 of the storage tank body, and the perlite filling port 14 is used for filling storage tank perlite and filling subsequent perlite when the perlite is settled.
In the above embodiment, preferably, the present invention further includes a feeding system 15 for feeding the storage tank body; the feeding system comprises a feeding pipe body, a first feeding pipeline and a second feeding pipeline; the feeding pipe body is arranged in the storage tank body, and the bottom of the feeding pipe body is fixed with the bottom of the inner tank; the raw material is communicated with the feeding pipe body through a first feeding pipeline; the raw materials are communicated with the inner cavity of the storage tank body through a second feeding pipeline; the first feeding pipeline and the second feeding pipeline are respectively provided with a first valve.
It should be noted that if there is a possible stratification situation, such as when the incoming ship liquid hydrogen density is greater than the liquid hydrogen density stored in the tank, the feed is from the top, i.e. through the second feed line; when the incoming ship liquid hydrogen density is less than the density of the liquid hydrogen stored in the tank, the incoming ship liquid hydrogen is fed from the bottom, i.e. through the first feed line. The feeding mode is mainly used for preventing the layering inside the storage tank, and unloading liquid hydrogen and the liquid hydrogen inside the storage tank are fully mixed by controlling the feeding position.
In the above embodiment, preferably, the present invention further comprises a pump delivery system 16 for delivering the internal liquid hydrogen to the outside of the storage tank body; the pump output system comprises a pump well, a liquid hydrogen conveying pump and a first output pipeline; the pump well is arranged in the storage tank body, the liquid hydrogen delivery pump is arranged in the pump well, the liquid hydrogen delivery pump is connected with an external storage device through a first output pipeline, and a second valve is arranged on the first output pipeline.
The delivery pump is a submersible centrifugal pump, is installed in a pump well together with an electric motor, and is provided with a flow control valve on an outlet pipeline of each pump, and the flow control valve is used for adjusting the outlet flow of each running pump so that the running pumps work at the same flow, and can cut off the output in an emergency.
In the above embodiment, preferably, the present invention further comprises a hydrogen boil-off gas treatment system 17 for removing excess hydrogen boil-off gas; the hydrogen vaporization treatment system comprises a second output pipeline; the inner cavity of the storage tank body is connected with an external hydrogen collecting device through a second output pipeline.
It should be noted that the generation of the boil-off gas in the liquid hydrogen storage tank is mainly due to the conversion of the para-and para-hydrogen, and the input of external energy, such as the operation of a pump, the introduction of external heat, the change of atmospheric pressure, the influence of the environment, and the change of the volume of the liquid hydrogen in the tank during the feeding of the liquid hydrogen.
In the above embodiment, the present invention preferably further comprises an overpressure protection system 18 for performing pressure control protection on the storage tank when the storage tank is in overpressure; the overpressure protection system includes a third output line and a pressure relief valve; the inner cavity of the storage tank body is connected with an external recovery pipe through a third output pipeline; and a pressure safety valve is arranged on the third output pipeline.
Note that the normal operating pressure of the tank is typically less than 0.6MPa (G). Due to consideration of H 2 Safety requirements, the storage tank is normally maintained at its normal operating pressure by the BOG compressor and gas/liquid supply and export. If the tank pressure rises above the normal maximum operating pressure, the gas in the tank is released to the flare of the tank; when the pressure of the storage tank continues to increase, the emergency pressure release system of the storage tank can play a role in final protection, namely H 2 The evaporated gas is discharged into a recovery pipe through a pressure safety valve, and an independent pipeline system is arranged in the receiving station and used for collecting the overpressure H 2 。
In the above embodiment, preferably, the present invention further includes a vacuum protection system 19 for performing pressure control protection on the storage tank when the storage tank is at a negative pressure; the vacuum protection system comprises an input pipeline and a vacuum safety valve; h 2 Or He inert gas is connected with the cavity of the storage tank body through an input pipeline; and a vacuum safety valve is arranged on the input pipeline.
In addition, the reaction is carried out by H 2 The supply of the/He inert gas can maintain the normal operating pressure of the tank. If the pressure in the storage tank is reduced, the vapor compressor stops operating and the storage tank is stopped from draining. In addition, a gas supply device for maintaining internal pressure can be adopted, but if the requirement cannot be met, the vacuum safety valve of the storage tank can be opened in time and can supplement inert gas into the storage tank, and the vacuum safety valve and the storage tank can be connected with each otherA dedicated piping system connection within the receiving station is used for make-up gas to maintain internal pressure.
In addition, it should be noted that the storage tank cold insulation structure of the utility model comprises three structures of tank bottom cold insulation, tank wall cold insulation and ceiling cold insulation, wherein the tank bottom cold insulation adopts a glass brick or PUF layer cold insulation form, the glass brick and PUF can bear the load of the inner tank and the liquid in the tank, and the strength of the material is ensured to meet the requirement; the tank wall is kept cold by adopting a combined form of an elastic felt and perlite, wherein the elastic felt is arranged on the outer side of the outer tank, and the perlite is arranged on the outer side of the elastic felt and extends to a wall plate or a lining plate of the outer tank; the suspended ceiling is cold-insulated in a glass wool form, and the glass wool is directly laid above the suspended ceiling plate.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a large-scale furred ceiling structure low pressure liquid hydrogen concrete storage tank which characterized in that includes:
the pile foundation is fixed with the ground, and a bearing platform is arranged on the pile foundation;
the tank bottom cold insulation layer is arranged on the top of the bearing platform in a stacked mode;
the bottom of the storage tank body is fixed with the tank bottom cold insulation layer, and a cavity for storing liquid hydrogen is formed in the storage tank body; the storage tank body comprises a prestressed concrete outer tank, a perlite layer, an elastic felt layer and an inner tank which are sequentially arranged from outside to inside;
the metal ceiling is arranged at the top of the storage tank body, and the outer edge of the metal ceiling is connected with the perlite layer of the storage tank body;
the prestressed concrete dome is arranged above the metal ceiling, and the outer edge of the prestressed concrete dome is fixed with the top of the prestressed concrete outer tank of the storage tank body;
prestressed reinforcement is prefabricated in the pile foundation, the prestressed concrete outer tank of the storage tank body and the prestressed concrete dome.
2. The large suspended ceiling structure low-pressure liquid hydrogen concrete storage tank as claimed in claim 1, wherein a corrugated suspended ceiling is arranged between the edge of the metal suspended ceiling and the perlite layer.
3. The large-scale suspended ceiling structure low-pressure liquid-hydrogen concrete storage tank as claimed in claim 1, wherein a perlite baffle is arranged at the joint of the metal suspended ceiling and the perlite layer.
4. The large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank of claim 1, wherein a suspended ceiling glass wool heat insulation layer is arranged on the upper part of the metal suspended ceiling;
and a ceiling discharge port is arranged on the metal ceiling.
5. The large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank according to claim 1, wherein a dome liner plate is arranged at the bottom of the prestressed concrete dome;
a perlite filling opening is formed in one side of the prestressed concrete dome and penetrates through the prestressed concrete dome and then extends into the upper portion of the annular space of the perlite layer of the storage tank body.
6. The large-scale suspended ceiling structure low-pressure liquid-hydrogen concrete storage tank according to claim 1, further comprising a feeding system for feeding the storage tank body;
the feeding system comprises a feeding pipe body, a first feeding pipeline and a second feeding pipeline;
the feeding pipe body is arranged inside the storage tank body, and the bottom of the feeding pipe body is fixed with the bottom of the inner tank;
the raw material is communicated with the feeding pipe body through a first feeding pipeline;
the raw materials are communicated with the inner cavity of the storage tank body through a second feeding pipeline;
the first feeding pipeline and the second feeding pipeline are respectively provided with a first valve.
7. The large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank according to claim 1, further comprising a pump delivery system for delivering internal liquid hydrogen to the outside of the storage tank body;
the pump output system comprises a pump well, a liquid hydrogen conveying pump and a first output pipeline;
the pump well is arranged in the storage tank body, the liquid hydrogen delivery pump is arranged in the pump well, the liquid hydrogen delivery pump is connected with an external storage device through a first output pipeline, and a second valve is arranged on the first output pipeline.
8. The large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank according to claim 1, further comprising a hydrogen evaporation gas treatment system for removing excessive hydrogen evaporation gas;
the hydrogen vaporization treatment system comprises a second output pipeline;
the inner cavity of the storage tank body is connected with an external hydrogen collecting device through a second output pipeline.
9. The large-scale suspended ceiling structure low-pressure liquid-hydrogen concrete storage tank according to claim 1, further comprising an overpressure protection system for performing pressure control protection on the storage tank when the storage tank is in overpressure;
the overpressure protection system includes a third output line and a pressure relief valve;
the inner cavity of the storage tank body is connected with an external recovery pipe through a third output pipeline;
and a pressure safety valve is arranged on the third output pipeline.
10. The large-scale suspended ceiling structure low-pressure liquid-hydrogen concrete storage tank according to claim 1, further comprising a vacuum protection system for performing pressure control protection on the storage tank when the storage tank is under negative pressure;
the vacuum protection system comprises an input pipeline and a vacuum safety valve;
H 2 or H e The inert gas is connected with the cavity of the storage tank body through an input pipeline;
and a vacuum safety valve is arranged on the input pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221611162.5U CN217559552U (en) | 2022-06-24 | 2022-06-24 | Large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank |
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| CN202221611162.5U CN217559552U (en) | 2022-06-24 | 2022-06-24 | Large-scale suspended ceiling structure low-pressure liquid hydrogen concrete storage tank |
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| CN217559552U true CN217559552U (en) | 2022-10-11 |
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