CN114383036A - Double-layer spherical tank system for storing cryogenic medium - Google Patents

Double-layer spherical tank system for storing cryogenic medium Download PDF

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Publication number
CN114383036A
CN114383036A CN202111422281.6A CN202111422281A CN114383036A CN 114383036 A CN114383036 A CN 114383036A CN 202111422281 A CN202111422281 A CN 202111422281A CN 114383036 A CN114383036 A CN 114383036A
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China
Prior art keywords
spherical tank
tank
upright post
outer spherical
heat insulation
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Granted
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CN202111422281.6A
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Chinese (zh)
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CN114383036B (en
Inventor
葛阳
李阳
骆彩萍
任超
陈小康
刘艳军
杜利顺
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Hualu Engineering and Technology Co Ltd
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Hualu Engineering and Technology Co Ltd
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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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • 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
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • 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
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/028—Special adaptations of indicating, measuring, or monitoring equipment having the volume as the parameter
    • 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
    • F17C13/04—Arrangement or mounting of valves
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    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/081—Mounting arrangements for vessels for large land-based storage vessels
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    • F17C3/022—Land-based bulk storage containers
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    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
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    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0128—Shape spherical or elliptical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/0304—Thermal insulations by solid means
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    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/0325—Aerogel
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    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/0337—Granular
    • F17C2203/0341—Perlite
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    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
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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
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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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/45—Hydrogen technologies in production processes

Abstract

The invention belongs to the technical field of storage tanks in the field of petrochemical industry, and particularly discloses a double-layer spherical tank system for storing cryogenic medium. The outer spherical tank is supported by an upright post supporting system, and the upright post supporting system is arranged on a concrete foundation and is fixed by foundation bolts; the inner spherical tank is arranged on the wall of the outer spherical tank through a pull rod suspension system, and a heat insulation system is arranged between the inner spherical tank and the outer spherical tank; the outer spherical tank top is equipped with and presss from both sides the cover manhole, and outer spherical tank bottom is equipped with outer spherical tank instrument and passes through mouthful, interior spherical tank outer wall is equipped with displacement sensor, and interior spherical tank inside is equipped with truss cat ladder platform, installs the ultra-low temperature thermometer on the truss cat ladder platform. The system can reduce the BOG amount of the cryogenic medium, solve the problem of temperature difference stress after the storage tank is subjected to cryogenic shrinkage, and meet the requirements of transfer and long-term large-scale and low-loss storage of cryogenic liquefied gas.

Description

Double-layer spherical tank system for storing cryogenic medium
Technical Field
The invention relates to a double-layer spherical tank system for storing cryogenic media, and relates to the fields of cryogenic storage and transportation, new energy and petrochemical industry.
Background
Hydrogen is a recognized clean energy source, particularly green hydrogen prepared by photocatalysis or electrolysis by utilizing solar energy or wind energy, and the carbon emission can reach net zero. With the improvement of national environmental requirements, the research on green hydrogen utilization developed around 'carbon peak reaching' and 'carbon neutralization' is developing at a high speed, a new industry and a new industry state of hydrogen energy economy are initially formed, and how to safely and efficiently store hydrogen on a large scale becomes one of key factors for hydrogen energy development.
Meanwhile, hydrogen is also an energy source with extremely high energy density and mass ratio, and a liquid hydrogen liquid oxygen rocket engine is a key system of a carrier rocket. With the successful development of a first set of independent development ton-grade hydrogen liquefaction system, the large-scale storage of the liquid hydrogen and liquid oxygen of the launching field becomes the next technical difficulty needing to be broken through.
From the above, in the fields of new energy, environmental protection, aerospace and the like, the demands for transferring and storing cryogenic liquefied gases such as liquid hydrogen, liquid oxygen, LNG and the like in large scale for a long time are very urgent. Relevant data show that the cryogenic medium is stored by adopting a common multilayer heat-insulating container, the storage capacity is small, the daily evaporation rate is high, and therefore how to transfer and store the cryogenic liquefied gas in a large-scale and low-loss manner for a long time is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a double-layer spherical tank system for storing cryogenic medium, which reduces the BOG amount of the cryogenic medium, solves the problem of temperature difference stress after the storage tank is subjected to cryogenic shrinkage, and meets the requirements of transfer and long-term large-scale and low-loss storage of cryogenic liquefied gas.
To achieve the above object, the technical solution of the present invention includes the following: the utility model provides a store double-deck spherical tank system of cryrogenic medium, includes outer spherical tank, interior spherical tank, its characterized in that: the device also comprises an upright post supporting system, a pull rod suspension system and a heat insulation system;
the outer spherical tank is supported by an upright post supporting system, and the upright post supporting system is fixed on a concrete foundation through foundation bolts;
the inner spherical tank is suspended on the inner wall of the outer spherical tank through a pull rod suspension system, an annular heat insulation space is formed between the inner spherical tank and the outer spherical tank, and a heat insulation system is arranged in the space;
the top of the inner spherical tank is provided with a gas outlet, a gas pressurizing ring pipe, an instrument passing hole of the inner spherical tank, a radar liquid level meter and a safety valve port;
the gas pressurizing ring pipe consists of a gas inlet arranged at the top of the inner spherical tank and a regular polygonal annular distribution pipe, and the annular distribution pipe is suspended at the top of the inner spherical tank through a suspension rod;
the bottom of the inner spherical tank is provided with a material inlet and a material outlet, and the material outlet is provided with a vortex breaker;
the center of the top of the outer spherical tank is provided with a jacket manhole, and the bottom of the outer spherical tank is provided with an outer spherical tank instrument through hole.
Furthermore, the material inlet pipeline is provided with a U-shaped bend between the outer spherical tank and the inner spherical tank, and the U-shaped bend or an expansion joint is arranged to eliminate temperature difference stress when the connecting pipe of the inner spherical tank is led out;
the material outlet pipeline is led to the equator of the spherical tank along the annular space and penetrates through the outer spherical tank to be connected with the external pipeline.
Furthermore, an inner spherical tank displacement sensor is arranged on the outer wall of the inner spherical tank, and an electric signal wire of the inner spherical tank displacement sensor is led out through an outer spherical tank instrument through port and is connected with an external instrument transmitter; the inner spherical tank is internally provided with a truss ladder platform, and an ultra-low temperature thermometer is arranged along the truss ladder platform.
Furthermore, the radar liquid level meter and the ultra-low temperature thermometer are led out through the inner spherical tank instrument through port and connected with an external instrument transmitter.
Furthermore, the pull rod suspension system is composed of a suspension beam welded on the inner wall of the outer spherical tank, a suspension lug welded on the outer wall of the inner spherical tank, a plurality of groups of cable-stayed suspension rods uniformly distributed along the circumference, an outer spherical tank reinforcing ring, a spherical nut, a locking nut, a spherical gasket and a plurality of suspension beam supporting rib plates.
Furthermore, a plurality of groups of the cable-stayed suspension rods respectively penetrate through the suspension lugs and the pull rod holes in the suspension beams and are fastened through spherical nuts, locking nuts and spherical gaskets, so that the inner spherical tank is suspended inside the outer spherical tank to form an annular heat insulation space, and a plurality of suspension beam support rib plates are circumferentially and uniformly distributed on the lower side of the suspension beams to play a supporting role.
Furthermore, the inner surface of the outer spherical tank and the outer surface of the inner spherical tank of the heat insulation system are respectively provided with an outer tank thermocouple and an inner tank thermocouple to monitor the heat leakage quantity of the heat insulation system, and a thermocouple electric signal wire is led out through an outer spherical tank instrument through port and is connected with an external instrument transmitter.
Furthermore, the annular heat insulation space of the heat insulation system is filled with heat insulation materials, the heat insulation materials are simultaneously vacuumized, a pressure sensor is arranged to monitor the settlement condition of the heat insulation materials, meanwhile, for preventing the external pressure instability of the outer spherical tank, a plurality of groups of warp-wise reinforcing rings are circumferentially and uniformly distributed on the inner wall of the outer spherical tank, and weft-wise reinforcing rings are arranged at the upper end and the lower end of each warp-wise reinforcing ring.
Further, the heat insulating material is a multilayer insulating film, expanded perlite, aerogel or a tiny hollow glass ball.
Further, the stand braced system comprises bottom plate, a plurality of stands, stand pull rod, stand upper junction plate, stand lower junction plate, stand tie-beam, and a plurality of stand circumference equipartitions link to each other with ectosphere jar outer wall, alternately sets up two stand pull rods between the adjacent stand, and the stand pull rod passes through stand upper junction plate and stand lower junction plate to be connected with the stand, sets up the stand tie-beam between adjacent stand, further improves stand braced system's stability.
Compared with the prior art, the invention has the following beneficial effects:
1. the system can meet the requirements of transferring in the fields of new energy, environmental protection, aerospace and the like and storing cryogenic liquefied gases such as liquid hydrogen, liquid oxygen, LNG and the like in a large-scale and low-loss mode for a long time, and the specific surface area of the spherical storage tank system is sharply reduced along with the increase of the tank capacity.
2. The system adopts the spherical tank body and is provided with a proper heat insulation system according to the temperature of the storage medium, so that the BOG amount of the storage medium can be greatly reduced while the investment is saved, and the investment of a BOG liquefaction system is remarkably reduced.
3. The inner spherical tank of the system is supported by a pull rod suspension system, and the problem of temperature difference stress after deep cold shrinkage of the inner spherical tank is perfectly solved. The requirement of large-scale long-term safe storage of the cryogenic medium is met, the structure is reasonable and novel, the safety and reliability are high, and good economic benefits are achieved.
Drawings
FIG. 1 is a front view of a double-layer spherical tank system for storing cryogenic medium according to the present invention.
Fig. 2 is a partial cross-sectional view of the can of fig. 1.
Fig. 3 is a schematic structural diagram of a rod suspension system.
Fig. 4 is a top view of fig. 3.
FIG. 5 is a schematic view of the construction of the insulation system.
Fig. 6 is a schematic structural view of the column support system.
In the drawings: 1-outer spherical tank, 2-inner spherical tank, 3-upright post supporting system, 3-1-bottom plate, 3-2-upright post, 3-upright post pull rod, 3-4-upright post upper connecting plate, 3-5-upright post lower connecting plate, 3-6-upright post connecting beam, 4-pull rod suspension system, 4-1 suspension beam, 4-2-spherical gasket, 4-3-spherical nut, 4-locking nut, 4-5-suspension beam supporting rib, 4-6-diagonal suspension rod, 4-7-outer spherical tank reinforcing ring, 4-8-suspension lug, 5-thermal insulation system, 5-1-thermal insulation material, 5-2-pressure sensor, 5-3-inner tank thermocouple, 5-4-outer tank thermocouple, 5-warp-reinforcement ring, 5-6-annular reinforcing ring, 6-gas outlet, 7-gas pressurizing ring pipe, 8-inner spherical tank instrument through hole, 9-radar level gauge, 10-safety valve port, 11-material inlet, 12-material outlet, 13-vortex breaker, 14-jacket manhole, 15-outer spherical tank instrument through hole, 16-inner spherical tank displacement sensor, 17-truss ladder platform and 18-ultra-low temperature thermometer.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in figures 1 and 2, the double-layer spherical tank system for storing cryogenic media mainly comprises an outer spherical tank 1, an inner spherical tank 2, a column support system 3, a pull rod suspension system 4, a heat insulation system 5, a gas outlet 6, a gas pressurization ring pipe 7, an inner spherical tank instrument through hole 8, a radar liquid level meter 9, a safety valve port 10, a material inlet 11, a material outlet 12, a vortex breaker 13, a jacket manhole 14, an outer spherical tank instrument through hole 15, an inner spherical tank displacement sensor 16, a truss ladder climbing platform 17 and an ultra-low temperature thermometer 18.
Wherein, the outer spherical tank 1 is supported by a column support system 3, and the column support system 3 is fixed on the concrete foundation through foundation bolts; the inner spherical tank 2 is suspended on the inner wall of the outer spherical tank 1 through a pull rod suspension system 4, an annular heat insulation space is formed between the inner spherical tank and the outer spherical tank 1, and a heat insulation system 5 is arranged in the space.
And a gas outlet 6, a gas pressurizing ring pipe 7, an inner spherical tank instrument through hole 8, a radar liquid level meter 9 and a safety valve port 10 are arranged at the top of the inner spherical tank 2. The bottom of the inner spherical tank 2 is provided with a material inlet 11 and a material outlet 12, and the material outlet is provided with a vortex breaker 13. A U-shaped bend is arranged between the outer spherical tank 1 and the inner spherical tank 2 on the pipeline of the material inlet 11, and the U-shaped bend or an expansion joint is arranged to eliminate temperature difference stress when the connecting pipe of the inner spherical tank 2 is led out; the material outlet 12 pipeline is led to the equator of the spherical tank along the annular space and passes through the outer spherical tank 1 to be connected with the external pipeline.
The gas pressurizing ring pipe 7 consists of a gas inlet arranged at the top of the inner spherical tank and a regular polygonal annular distribution pipe, and the annular distribution pipe is suspended at the top of the inner spherical tank 2 through a suspension rod;
the center of the top of the outer spherical tank 1 is provided with a jacket manhole 14, and the bottom of the outer spherical tank 1 is provided with an outer spherical tank instrument through hole 15.
An inner spherical tank displacement sensor 16 is arranged on the outer wall of the inner spherical tank 2, and an electric signal wire of the inner spherical tank displacement sensor 16 is led out through an outer spherical tank instrument through port 15 and connected with an external instrument transmitter; the inner spherical tank 2 is internally provided with a truss ladder platform 17, and an ultra-low temperature thermometer 18 is arranged along the truss ladder platform 17.
Wherein the radar level gauge 9 and the ultra-low temperature thermometer 18 are led out through the inner spherical tank instrument through port 8 and connected with an external instrument transmitter.
As shown in figures 3 and 4, the pull rod suspension system 4 is composed of a suspension beam 4-1 welded on the inner wall of the outer spherical tank 1, a suspension lug 4-8 welded on the outer wall of the inner spherical tank 2, a plurality of groups of cable-stayed suspension rods 4-6 uniformly distributed along the circumference, an outer spherical tank reinforcing ring 4-7, a spherical nut 4-3, a locking nut 4-4, a spherical gasket 4-2 and a plurality of suspension beam supporting rib plates 4-5.
The plurality of groups of the cable-stayed suspension rods 4-6 respectively penetrate through the suspension lugs 4-8 and the pull rod holes on the suspension beams 4-1 and are fastened through the spherical nuts 4-3, the locking nuts 4-4 and the spherical gaskets 4-2, so that the inner spherical tank 2 is suspended inside the outer spherical tank 1 to form an annular heat insulation space, and a plurality of suspension beam supporting rib plates 4-5 are circumferentially and uniformly distributed at the lower side of the suspension beams 4-1 to play a supporting role.
The heat insulation system 5 is characterized in that an outer tank thermocouple 5-4 and an inner tank thermocouple 5-3 are respectively arranged on the inner surface of the outer spherical tank 1 and the outer surface of the inner spherical tank 2 to monitor the heat leakage quantity of the heat insulation system 5, and a thermocouple electric signal wire is led out through an outer spherical tank instrument through port 15 and connected with an external instrument transmitter.
As shown in fig. 5, the annular heat insulation space of the heat insulation system 5 is filled with heat insulation materials 5-1, the heat insulation space is simultaneously evacuated, a pressure sensor 5-2 is arranged to monitor the sedimentation condition of the heat insulation materials 5-1, meanwhile, in order to prevent the external pressure instability of the outer spherical tank 1, a plurality of groups of warp-wise reinforcing rings 5-5 are circumferentially and uniformly distributed on the inner wall of the outer spherical tank 1, and weft-wise reinforcing rings 5-6 are arranged at the upper end and the lower end of each warp-wise reinforcing ring 5-5.
The heat insulating material 5-1 is a multilayer insulating film, expanded perlite, aerogel or a tiny hollow glass ball.
As shown in figure 6, the upright post supporting system 3 is composed of a bottom plate 3-1, a plurality of upright posts 3-2, upright post pull rods 3-3, upright post upper connecting plates 3-4, upright post lower connecting plates 3-5 and upright post connecting beams 3-6, wherein the plurality of upright posts 3-2 are uniformly distributed on the circumference and connected with the outer wall of the outer spherical tank 1, two upright post pull rods 3-3 are arranged between the adjacent upright posts 3-2 in a crossed manner, the upright post pull rods 3-3 are connected with the upright posts 3-2 through the upright post upper connecting plates 3-4 and the upright post lower connecting plates 3-5, the upright post connecting beams 3-6 are arranged between the adjacent upright posts 3-2, and the stability of the upright post supporting system 3 is further improved.
Preferably, the outer ball tank 1 is made of low alloy steel, and the inner ball tank 2 is made of austenitic stainless steel and low temperature aluminum alloy.
Preferably, the gas pressurizing ring pipe 7 consists of a gas inlet arranged at the top of the inner spherical tank and a regular polygon annular distribution pipe, and the regular polygon annular distribution pipe is suspended at the top of the inner spherical tank through a suspender and can be used as a pre-cooling pipe before feeding of the system.
Preferably, the ultra-low temperature thermometer 18 employs a platinum thermal resistance probe excellent in low temperature measurement performance.
Preferably, a U-shaped bend or an expansion joint is arranged on the connecting pipe and the manhole of the inner spherical tank 2 when the connecting pipe and the manhole are led out to eliminate temperature difference stress.
Preferably, the spherical nut 4-3 is matched with the spherical gasket 4-2 to ensure that the pull rod rotates along with the inner spherical tank 2 when the inner spherical tank expands and contracts due to temperature difference so as not to generate temperature difference stress, and the outer spherical tank reinforcing ring 4-7 is used for improving the rigidity of the outer spherical tank 1 and ensuring the safety and stability of the pull rod suspension system 4.
As shown in fig. 3 and 4, the contact surface of the spherical nut 4-3 and the spherical pad 4-2 in the pull rod suspension system is preferably mirror polished to ensure the free rotation of the pull rod.
As shown in fig. 5, preferably, the insulation system 5 may employ both insulation schemes of filling only the insulation material or filling the insulation material while high vacuum in the annular insulation space between the outer spherical tank 1 and the inner spherical tank 2. The insulation system is not provided with the warp direction reinforcing rings 5-5 and the weft direction reinforcing rings 5-6 when only the insulation material is filled.
The above-described embodiments are intended to explain the technical problems and aspects of the present invention in further detail, and should not be construed as limiting the present invention. It should be understood that the directions or positional relationships indicated in the present invention are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the components indicated must have a specific direction. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a store double-deck spherical tank system of cryrogenic medium, includes outer spherical tank (1), interior spherical tank (2), its characterized in that: the heat-insulation system also comprises a column supporting system (3), a pull rod suspension system (4) and a heat-insulation system (5);
the outer spherical tank (1) is supported by an upright post supporting system (3), and the upright post supporting system (3) is fixed on a concrete foundation through foundation bolts;
the inner spherical tank (2) is suspended on the inner wall of the outer spherical tank (1) through a pull rod suspension system (4), an annular heat insulation space is formed between the inner spherical tank and the outer spherical tank (1), and a heat insulation system (5) is arranged in the space;
the top of the inner spherical tank (2) is provided with a gas outlet (6), a gas pressurizing ring pipe (7), an inner spherical tank instrument through hole (8), a radar liquid level meter (9) and a safety valve port (10);
the gas pressurizing ring pipe (7) consists of a gas inlet arranged at the top of the inner spherical tank and a regular polygonal annular distribution pipe, and the annular distribution pipe is suspended at the top of the inner spherical tank (2) through a suspension rod;
the bottom of the inner spherical tank (2) is provided with a material inlet (11) and a material outlet (12), and the material outlet is provided with a vortex breaker (13);
the center of the top of the outer spherical tank (1) is provided with a jacket manhole (14), and the bottom of the outer spherical tank (1) is provided with an outer spherical tank instrument through hole (15).
2. The dual-layer spherical tank system for storing cryogenic medium of claim 1, wherein: the pipeline of the material inlet (11) is provided with a U-shaped bend between the outer spherical tank (1) and the inner spherical tank (2), and the U-shaped bend or an expansion joint is arranged to eliminate temperature difference stress when the connecting pipe of the inner spherical tank (2) is led out; the pipeline of the material outlet (12) is led to the equator of the spherical tank along the annular space and passes through the outer spherical tank (1) to be connected with an external pipeline.
3. The dual-layer spherical tank system for storing cryogenic medium of claim 1, wherein: an inner spherical tank displacement sensor (16) is arranged on the outer wall of the inner spherical tank (2), and an electric signal wire of the inner spherical tank displacement sensor (16) is led out through an outer spherical tank instrument through hole (15) and is connected with an external instrument transmitter; the inner spherical tank (2) is internally provided with a truss ladder platform (17), and an ultra-low temperature thermometer (18) is arranged along the truss ladder platform (17).
4. The dual-layer spherical tank system for storing cryogenic medium of claim 3, wherein: the radar liquid level meter (9) and the ultra-low temperature thermometer (18) are led out through the inner spherical tank instrument through port (8) and connected with an external instrument transmitter.
5. The dual-layer spherical tank system for storing cryogenic medium of claim 1, wherein: the pull rod suspension system (4) is composed of suspension beams (4-1) welded on the inner wall of the outer spherical tank (1), suspension lugs (4-8) welded on the outer wall of the inner spherical tank (2), a plurality of groups of cable-stayed suspension rods (4-6) uniformly distributed along the circumference, outer spherical tank reinforcing rings (4-7), spherical nuts (4-3), locking nuts (4-4), spherical gaskets (4-2) and a plurality of suspension beam supporting rib plates (4-5).
6. The dual-layer spherical tank system for storing cryogenic medium of claim 5, wherein: the plurality of groups of the cable-stayed suspenders (4-6) respectively penetrate through the hangers (4-8) and the pull rod holes in the suspension beams (4-1) and are fastened through spherical nuts (4-3), locking nuts (4-4) and spherical gaskets (4-2), so that the inner spherical tank (2) is suspended inside the outer spherical tank (1) to form an annular heat insulation space, and a plurality of suspension beam supporting rib plates (4-5) are circumferentially and uniformly distributed on the lower side of the suspension beams (4-1) to play a supporting role.
7. The dual-layer spherical tank system for storing cryogenic medium of claim 1, wherein: the heat insulation system (5) is characterized in that an outer tank thermocouple (5-4) and an inner tank thermocouple (5-3) are respectively arranged on the inner surface of the outer spherical tank (1) and the outer surface of the inner spherical tank (2) to monitor the heat leakage quantity of the heat insulation system (5), and a thermocouple electric signal wire is led out through an outer spherical tank instrument through port (15) and is connected with an external instrument transmitter.
8. The dual-layer spherical tank system for storing cryogenic medium of claim 7, wherein: the annular heat insulation space of the heat insulation system (5) is filled with heat insulation materials (5-1) and is simultaneously vacuumized, the pressure sensors (5-2) are arranged to monitor the sedimentation condition of the heat insulation materials (5-1), meanwhile, in order to prevent the external pressure instability of the outer spherical tank (1), a plurality of groups of warp-wise reinforcing rings (5-5) are uniformly distributed on the circumference of the inner wall of the outer spherical tank (1), and weft-wise reinforcing rings (5-6) are arranged at the upper end part and the lower end part of each warp-wise reinforcing ring (5-5).
9. The dual-layer spherical tank system for storing cryogenic medium of claim 8, wherein: the heat insulation material (5-1) is a multilayer insulation film, expanded perlite, aerogel or a tiny hollow glass ball.
10. The dual-layer spherical tank system for storing cryogenic medium of claim 1, wherein: the upright post supporting system (3) is composed of a bottom plate (3-1), a plurality of upright posts (3-2) and upright post pull rods (3-3), upright post upper connecting plates (3-4), upright post lower connecting plates (3-5) and upright post connecting beams (3-6), wherein the plurality of upright posts (3-2) are uniformly distributed on the circumference and are connected with the outer wall of the outer spherical tank (1), two upright post pull rods (3-3) are arranged between the adjacent upright posts (3-2) in a crossed mode, the upright post pull rods (3-3) are connected with the upright posts (3-2) through the upright post upper connecting plates (3-4) and the upright post lower connecting plates (3-5), the upright post connecting beams (3-6) are arranged between the adjacent upright posts (3-2), and the stability of the upright post supporting system (3) is further improved.
CN202111422281.6A 2021-11-26 2021-11-26 Double-layer spherical tank system for storing cryogenic medium Active CN114383036B (en)

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CN114877245A (en) * 2022-05-10 2022-08-09 华陆工程科技有限责任公司 Inner tank and outer tank connecting device for double-layer spherical tank
CN114935109A (en) * 2022-05-31 2022-08-23 沈阳工业安装工程股份有限公司 Natural gas spherical tank with filtering function
GB2610667A (en) * 2021-09-09 2023-03-15 Xcience Ltd Pressure vessel, use and method of manufacture

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CN205906493U (en) * 2016-05-28 2017-01-25 江联重工集团股份有限公司 Duplex stainless steel spherical tank
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