CN109335366B - Oversized flexible gas storage and method - Google Patents
Oversized flexible gas storage and method Download PDFInfo
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- CN109335366B CN109335366B CN201811407134.XA CN201811407134A CN109335366B CN 109335366 B CN109335366 B CN 109335366B CN 201811407134 A CN201811407134 A CN 201811407134A CN 109335366 B CN109335366 B CN 109335366B
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- 238000003860 storage Methods 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000012528 membrane Substances 0.000 claims abstract description 78
- 230000001502 supplementing effect Effects 0.000 claims abstract description 71
- 238000009826 distribution Methods 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000010408 film Substances 0.000 claims description 72
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000007667 floating Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 210000002808 connective tissue Anatomy 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 189
- 210000004379 membrane Anatomy 0.000 description 61
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000003345 natural gas Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 210000002469 basement membrane Anatomy 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/04—Linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
Abstract
The invention discloses an oversized flexible gas storage and a method thereof, wherein the gas storage comprises a bottom film, an inner film, an outer film, a gas storage foundation, a gas inlet and outlet pipeline system and a gas supplementing and pressure releasing system; the gas storage foundation comprises an inner ring beam foundation and an outer ring beam foundation, and an annular channel is arranged between the inner ring beam foundation and the outer ring beam foundation; the inner membrane and the bottom membrane are fixed on the inner ring beam foundation in a sealing way; the periphery of the lower edge of the outer membrane is fixed on the outer ring beam foundation in a sealing way; the gas inlet and outlet pipeline system comprises a gas inlet main pipe, a gas outlet main pipe, a distribution head, a gas distribution pipe network, a shielding platform and a material level meter; the air supplementing and pressure releasing system comprises an annular air distribution pipe, an air supplementing main pipe, an air supplementing fan set, a pressure sensor, an air speed sensor, a safety pressure releasing device, a gas leakage sensor, an exhaust device and the like. The method comprises the steps of air inlet of the air storage chamber, outward air transmission of the air storage chamber, safe operation under the condition of strong wind and safe operation when the air leaks. The product has the advantages of large gas storage capacity, quick field installation, short construction period, low cost, convenient maintenance and loose site selection.
Description
Technical Field
The invention relates to a gas storage and a method, in particular to an oversized flexible gas storage and a method.
Background
The storage of industrial and domestic fuel gases and industrial gases, represented by natural gas, shale gas, coal gas and hydrogen, generally uses steel storage tanks, wet gas tanks or dry guide rail gas tanks, which have the problems of high cost, long installation time and high maintenance cost, and are limited by the span of the steel structure, so that the storage volume is hundreds of thousands of cubic meters at most.
With the rapid increase of natural gas consumption, emergency gas storages with ultra-large capacity of more than one million cubic meters and even more than one million cubic meters are required to be built. However, the existing urban emergency reservoir adopts liquefied natural gas storage tanks, has the defects of high manufacturing cost and high low-temperature operation cost, adopts underground cave reservoirs, has special requirements on geological conditions, and has various limitations.
In addition, the double-film gas holder is mainly used for storing gases such as methane and the like, and consists of an outer film, an inner film, a bottom film and a gas holder foundation, wherein the bottom film and the inner film floating up and down form a gas storage chamber, the outer film plays a role in protection, and compared with a steel container, the double-film gas holder has the advantages of greatly reducing the manufacturing cost, but still has the defects, and is mainly characterized in that: the edges of the outer membrane, the inner membrane and the bottom membrane are overlapped and fixed together, when the inner membrane is overhauled regularly or the inner membrane fails, the outer membrane needs to be lifted, so that the overhauling of the inner membrane and the air storage chamber is very inconvenient, and the bigger the size of the gas holder is, the difficulty of lifting the outer membrane is also increased, thus the size of the gas holder is limited to be increased, the span, the height and the like of the existing double-membrane gas holder are small, and the air storage capacity is small and only used for storing the gas with the capacity of less than tens of thousands of cubic meters.
Chinese patent CN105546324a discloses a high-pressure double-film gas storage cabinet, comprising an inner film, an outer film, a mulch film, a sealing and compacting mechanism, a gas storage cabinet base and a gas inlet and outlet pipeline, wherein the outer film is sleeved with a metal shell with protection function, the defects are limited by the span of a steel structure, the size of the gas cabinet is limited to be increased, the gas storage amount is small, and the cost of the metal shell is high; the inner membrane is overhauled regularly or the inner membrane fails, and the outer membrane needs to be lifted, so that the inner membrane is inconvenient to install and overhaul.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides an oversized flexible gas storage and a method.
In order to solve the technical problems, the invention adopts the following technical scheme: the oversized flexible gas storage comprises a bottom film, an inner film and an outer film, wherein the bottom film and the inner film which can float up and down enclose a gas storage chamber, the outer film is arranged outside the inner film in a covering manner, and the oversized flexible gas storage further comprises a gas storage foundation, a gas inlet and outlet pipeline system and a gas supplementing and pressure releasing system;
the gas storage foundation is positioned at the bottom of the oversized flexible gas storage, an inner ring beam foundation, an outer ring beam foundation and an annular channel are arranged on the gas storage foundation, an inner sealing and fixing assembly is arranged on the inner ring beam foundation, the periphery of the lower edge of the inner membrane is overlapped with the periphery of the edge of the bottom membrane up and down, and the inner ring beam foundation is sealed and fixed through the inner sealing and fixing assembly; the outer ring beam foundation is provided with an outer sealing fixing component, and the periphery of the lower edge of the outer film is fixed on the outer ring beam foundation in a sealing way through the outer sealing fixing component; an annular channel is arranged between the inner ring beam foundation and the outer ring beam foundation, the annular channel provides a working place and a channel for the activities of people and installation and maintenance equipment, and a hollow annular channel protection chamber is enclosed among the annular channel, the inner membrane and the outer membrane;
the air inlet and outlet pipeline system is arranged in the air storage chamber and comprises an air inlet main pipe, an air outlet main pipe, a distribution head, an air distribution pipe network, a shielding platform and a level meter, wherein the air inlet main pipe and the air outlet main pipe are buried underground and respectively pass through the outer ring beam foundation, the annular channel and the inner ring beam foundation in sequence and then extend into the air storage chamber, and the air inlet main pipe and the air outlet main pipe are communicated with the air distribution pipe network through the distribution head in the air storage chamber; the distribution head and the gas distribution pipe network are both arranged on the bottom film, and a shielding platform is arranged above the gas distribution pipe network; the air inlet main pipe is connected with an air inlet electric valve, and the air outlet main pipe is connected with an air outlet electric valve; the material level meter is arranged at the top of the annular channel protection chamber and is used for monitoring the floating height and the upper and lower limit positions of the inner membrane when the air storage chamber enters and exits, and controlling the opening and closing of the air inlet electric valve and the air outlet electric valve;
the air supplementing and pressure releasing system comprises an annular air distribution pipe, an air supplementing main pipe, an air supplementing fan set, a pressure sensor, an air speed sensor, a pressure releasing main pipe, a safety pressure releasing device, a gas leakage sensor, an exhaust pipe and an exhaust device;
the annular gas distribution pipe is arranged in the annular channel, the top of the annular gas distribution pipe is provided with a plurality of circles of gas holes, and the gas supplementing and pressure releasing system is communicated with the annular channel protection chamber through the annular gas distribution pipe; the annular gas distribution pipe is communicated with the gas supplementing main pipe on one side and the pressure relieving main pipe on the other side, the gas supplementing main pipe and the pressure relieving main pipe are respectively provided with a plurality of gas supplementing main pipes, the plurality of gas supplementing main pipes respectively penetrate through the outer ring beam foundation and are communicated with the gas supplementing fan set, a one-way check valve is arranged between the gas supplementing main pipe and the gas supplementing fan set, and the plurality of pressure relieving main pipes respectively penetrate through the outer ring beam foundation and are communicated with the safety pressure relieving device;
the air supplementing fan set is connected with a fan controller, and the fan controller is respectively connected with a pressure sensor, an air speed sensor and a gas leakage sensor; the pressure sensor is arranged on the outer surface of the outer membrane, the wind speed sensor is arranged outside the gas storage, the gas leakage sensor is arranged in the annular channel protection chamber, and the gas leakage sensor is electrically connected with the exhaust device and the gas outlet electric valve;
one end of the exhaust pipe is opened and arranged at the bottom of the annular channel protection chamber, the other end of the exhaust pipe passes through the outer ring beam foundation and is communicated with an exhaust device arranged outside the gas storage, and the exhaust pipe is also communicated with an exhaust port arranged at the top of the annular channel protection chamber through an air duct; the air supplementing fan set, the safety pressure relief device and the exhaust device are respectively arranged outside the air storage.
Further, the oversized flexible gas storage further comprises a main control system, a ground lamp reflection optical fiber lighting system, an explosion-proof monitoring system, a standby power supply system and a lightning protection system; the ground lamp reflection optical fiber lighting system, the explosion-proof monitoring system, the standby power supply system, the air supplementing and pressure releasing system and the air inlet and outlet pipeline system are respectively connected with the main control system.
Further, the annular channel protection chamber is provided with an access door system which is in sealing connection with the outer membrane, and the access door system comprises a personnel access door, a vehicle access door, a standby door and a plurality of safety exit emergency doors.
Further, the outer membrane is formed by splicing or welding a plurality of membrane materials, the outer surface of the outer membrane is covered with a steel cable net, and the inner surface of the outer membrane is provided with a heat insulation layer.
Further, the tail end of the steel cable net is fixed on the external sealing and fixing assembly, and flexible thin film solar cells are paved in the grids of the steel cable net.
Further, the inner ring beam foundation and the outer ring beam foundation are reinforced concrete ground ring beams, and the inner ring beam foundation and the outer ring beam foundation are respectively provided with a plurality of pile foundations.
Further, the gas distribution pipe network in the gas inlet and outlet pipe system is distributed in a shape like a Chinese character 'hui', a round shape or a non-Chinese character 'hui', and the side surface of the gas distribution pipe network is provided with air holes.
Further, the air inlet main pipe and the air outlet main pipe in the air inlet and outlet pipeline system are respectively provided with a plurality of air inlet main pipes and a plurality of air outlet main pipes which are respectively communicated with the air distribution pipeline network.
Further, the bottom of the bottom film is a bottom film foundation, the ground of the bottom film foundation is a plane or a concave surface, a ground laying film is laid between the bottom film and the ground of the bottom film foundation, or antistatic floor glue is sprayed on the ground of the bottom film foundation.
The application method of the oversized flexible gas storage comprises the following specific processes:
air is taken in from the air storage chamber: opening an air inlet electric valve, inputting air into the air storage chamber by an air inlet main pipe, floating an inner film upwards, detecting the floating condition of the inner film by a level meter, closing the air inlet electric valve when the inner film floats to an upper limit position, and simultaneously automatically discharging redundant air in an annular channel protection chamber through a pressure relief main pipe by a safety pressure relief device;
the air storage chamber outputs air outwards: opening an air outlet electric valve, enabling an inner membrane to fall, detecting the floating condition of the inner membrane by a level meter, closing the air outlet electric valve when the inner membrane floats to a lower limit, simultaneously enabling a pressure sensor to detect the air pressure reduction in an annular channel protection chamber, and enabling an air supplementing fan set to supplement air to the annular channel protection chamber through an air supplementing main pipe by the pressure sensor through a fan controller so as to maintain the air pressure of the annular channel protection chamber constant;
when strong wind seriously affects the safe operation of the gas storage: the wind speed outside the gas storage exceeds the set value of a wind speed sensor, the wind speed sensor starts the air supplementing fan set through the fan controller to improve the air pressure in the annular channel protection chamber and the air leakage pressure of the safety pressure relief device, and meanwhile, a one-way check valve arranged between the air supplementing main pipe and the air supplementing fan set prevents the air in the annular channel protection chamber from flowing back out;
in the process, a gas leakage sensor arranged in the annular channel protection chamber monitors whether gas in the gas storage chamber leaks and the gas leakage concentration at any time, if the gas in the gas storage chamber leaks into the annular channel protection chamber, the gas leakage sensor starts the air supplementing fan group to convey air into the annular channel protection chamber in real time through a fan controller electrically connected with the gas leakage sensor, simultaneously starts the exhaust device to discharge the leaked gas to the outside through the exhaust pipe, and starts the gas outlet electric valve to enable the gas storage chamber to output the gas to the outside.
The invention discloses an oversized flexible gas storage, which is not limited by the span of a steel structure, has huge gas storage capacity, and has the advantages of rapid field installation, short construction period, low manufacturing cost and convenient maintenance, and main parts of the invention can be processed in a factory. Meanwhile, the invention has loose site selection, can be directly close to gas consumption areas such as natural gas and the like, greatly reduces the manufacturing cost and the transportation cost, and has very remarkable economic benefit. In addition, the oversized flexible gas storage is safe to use, and can also ensure the safety of overhauling staff in the gas storage, so that potential safety hazards are avoided. Meanwhile, the invention also discloses a use method of the oversized flexible gas storage, which can ensure that the gas storage can work normally under various external conditions and ensure the safe operation of the gas storage.
Drawings
Fig. 1 is a schematic view of a longitudinal structure of the present invention.
Fig. 2 is a schematic plan view of the present invention.
FIG. 3 is a schematic diagram of the connection relationship of the fan controller according to the present invention.
In the figure: 1. a base film; 2. an inner membrane; 3. an outer membrane; 4. a gas storage foundation; 5. an inner ring girder foundation; 6. an outer ring beam foundation; 7. an annular channel; 8. an inner seal fixation assembly; 9. an outer seal fixation assembly; 10. pile foundation; 11. a wire rope net; 12. a heat insulation layer; 13. an air inlet and outlet pipeline system; 1301. an air inlet main pipe; 1302. a main air outlet pipe; 1303. a dispensing head; 1304. a gas distribution pipe network; 1305. a level gauge; 1306. an air inlet electric valve; 1307. an air outlet electric valve; 1308. a shielding platform; 14. the air supplementing and pressure releasing system; 1401. an annular air distribution pipe; 1402. a main air supplementing pipe; 1403. a tonifying qi fan group; 1404. a pressure sensor; 1405. a wind speed sensor; 1406. a pressure relief main pipe; 1407. a safety pressure relief device; 1408. a gas leakage sensor; 1409. an exhaust pipe; 1410. an exhaust device; 1411. a one-way check valve; 1412. a fan controller; 1413. a top vent; 15. an access door system; 1501. personnel access door; 1502. vehicle access doors; 1503. a spare door; 1504. a safety exit emergency gate.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The oversized flexible gas storage as shown in fig. 1 and 2 comprises a bottom film 1, an inner film 2 and an outer film 3, wherein the bottom film 1 and the inner film 2 which can float up and down enclose a gas storage chamber, the outer film 3 is arranged outside the inner film 2 in a covering manner, and the oversized flexible gas storage also comprises a gas storage foundation 4, a gas inlet and outlet pipeline system 13 and a gas supplementing and pressure releasing system 14;
the gas storage foundation 4 is positioned at the bottom of the oversized flexible gas storage, an inner ring beam foundation 5, an outer ring beam foundation 6 and an annular channel 7 are arranged on the gas storage foundation 4, an inner sealing and fixing assembly 8 is arranged on the inner ring beam foundation 5, the periphery of the lower edge of the inner membrane 2 is overlapped with the periphery of the edge of the bottom membrane 1 up and down, and the inner ring beam foundation 5 is sealed and fixed through the inner sealing and fixing assembly 8; the outer ring beam foundation 6 is provided with an outer sealing and fixing assembly 9, and the periphery of the lower edge of the outer film 3 is fixed on the outer ring beam foundation 6 in a sealing way through the outer sealing and fixing assembly 9; an annular channel 7 is arranged between the inner ring beam foundation 5 and the outer ring beam foundation 6, the annular channel 7 provides a working place and a channel for the activities of people and installation and maintenance equipment, and a hollow annular channel protection chamber is enclosed among the annular channel 7, the inner membrane 2 and the outer membrane 3;
in the invention, the lower edges of an inner membrane 2 and an outer membrane 3 are separately arranged and respectively fixed on an inner ring beam foundation 5 and an outer ring beam foundation 6, so that the outer membrane 3 can be an independent air bearing type membrane structure building shell by adopting an air bearing type membrane structure building technology, and an effective protection effect can be provided for an air storage chamber; compared with a steel structure, the air bearing type membrane structure building has the technical advantage of larger span, so that the span of the air storage can reach 180 meters, the height can reach 90 meters, the length is not limited, the size is oversized, the air storage amount is huge, and the air bearing type membrane structure building can be used for storing air with ultra-large capacity of millions of cubic meters or even more than ten millions of cubic meters; the air bearing type membrane structure building is adopted as an outer membrane shell of the air storage, and the service life of the air storage can be as long as more than 20 years.
And the inner ring beam foundation 5 and the outer ring beam foundation 6 are reinforced concrete ground ring beams, and the inner ring beam foundation 5 and the outer ring beam foundation 6 are respectively provided with a plurality of pile foundations 10. Because the oversized flexible gas storage has an oversized and ultra-wide foundation, the oversized flexible gas storage is greatly influenced by uneven settlement of the foundation, and the inner ring beam foundation 5 and the outer ring beam foundation 6 are both reinforced concrete ring beams, the integrity and stability of the oversized flexible gas storage foundation can be ensured, and the damage of the uneven settlement of the foundation and the earthquake to the oversized flexible gas storage can be reduced; by providing the pile foundation 10, the integrity and stability of the air storage foundation can be further enhanced.
By arranging the annular channel 7, the working place and the movable space of the installation and maintenance equipment such as people, vehicles and the like in the air storage are provided, and the outer membrane 3 is not required to be lifted when the installation, the examination or the maintenance is carried out in the air storage, so that the air storage is convenient and quick.
The gas filled in the annular channel protection chamber is air or nitrogen. The annular channel is used for protecting indoor filling air, and is suitable for buffering and storing air frequently; the annular channel is protected and filled with nitrogen indoors, and the nitrogen is not easy to react with fuel gas, so that the annular channel is suitable for urban emergency storage of the fuel gas, and the safety of a gas storage is further improved.
In addition, the outer membrane 3 is formed by splicing or welding a plurality of membrane materials, the outer surface of the outer membrane 3 is covered with a steel cable net 11, and the inner surface of the outer membrane 3 is provided with a heat insulation layer 12. The tail end of the steel cable net 11 is fixed on the external sealing fixing assembly 9, and most of stress of the outer film 3 is transmitted to the steel cable net 11 and further transmitted to the outer ring beam foundation 6 and the gas storage foundation 4 through the steel cable net 11 which is arranged on the outer film 3 in a covering mode, so that the gas storage can resist severe climatic environments of various high winds (wind speeds of 51.0 m/s or 16-level typhoons) and heavy snow (snow loads of 250 kg/square meter), and the operation safety of the gas storage is improved. Flexible thin film solar cells are also laid in the grids of the wire rope net 11, and can provide power for the gas storage system. The heat insulation layer 12 arranged on the inner surface of the outer film 3 can reduce adverse effects of day and night temperature difference on air volume fluctuation in the annular channel protection chamber and the air storage chamber and increase weather resistance of the system.
It is noted that the bottom of the base film 1 is a base film foundation, the ground of the base film foundation is a plane or a concave surface, and the ground of the base film foundation or the ground of the base film foundation is sprayed with antistatic floor glue, wherein a ground laying film is laid between the base film 1 and the ground of the base film foundation. The ground of the basement membrane foundation below the basement membrane 1 can be not only a plane but also a concave surface, and the concave surface can increase the gas storage capacity under the condition of not increasing the sizes of the inner membrane 2 and the outer membrane 3; a ground laying film is laid between the base film 1 and the ground of the base film foundation or antistatic floor glue is sprayed on the ground, so that the base film can be protected. In addition, the plane shape of the gas storage foundation can be designed into a plurality of shapes such as a rectangle, a circle and the like on the premise of reasonable use according to the use requirement.
Further, the oversized flexible gas storage further comprises a gas inlet and outlet pipeline system 13, the gas inlet and outlet pipeline system 13 is arranged in the gas storage chamber, the gas inlet and outlet pipeline system 13 comprises a gas inlet main pipe 1301, a gas outlet main pipe 1302, a distribution head 1303, a gas distribution pipeline 1304, a shielding platform 1308 and a level meter 1305, the gas inlet main pipe 1301 and the gas outlet main pipe 1302 are buried underground and respectively penetrate through an outer ring beam foundation 6, an annular channel 7 and an inner ring beam foundation 5 in sequence and then extend into the gas storage chamber, the gas inlet main pipe 1301 and the gas outlet main pipe 1302 are communicated with the gas distribution pipeline 1304 in the gas storage chamber through the distribution head 1303, and the gas inlet main pipe 1301 and the gas outlet main pipe 1302 are respectively provided with a plurality of gas inlets; the distribution head 1303 and the gas distribution pipe network 1304 are both arranged on the base film 1, and a shielding platform 1308 is arranged above the gas distribution pipe network 1304; the air inlet main pipe 1301 is connected with an air inlet electric valve 1306, and the air outlet main pipe 1302 is connected with an air outlet electric valve 1307; the level meter 1305 is arranged at the top of the annular channel protection chamber and is used for monitoring the floating height and the upper and lower limit positions of the inner membrane 2 when the air storage chamber enters and exits, and controlling the opening and closing of the air inlet electric valve 1306 and the air outlet electric valve 1307;
wherein, the gas distribution pipe network 1304 is distributed in a shape like a Chinese character 'hui', a circle or a non-Chinese character 'hui', and the side surfaces of the pipes of the gas distribution pipe network 1304 are uniformly provided with gas holes, so that large retention can not be formed when gas in the gas storage chamber is discharged, and the gas inlet and outlet flows in the gas storage chamber are uniformly distributed, thereby effectively improving the floating stability of the inner membrane 2 up and down and being not easy to damage the inner membrane 2; the shielding platform 1308 can avoid the damage of the gas distribution pipe network 1304 to the inner membrane 2 and also provides an operation platform for the installation and maintenance of the inner membrane 2; the level meter 1305 monitors the floating height and the upper and lower limit positions of the inner membrane 2 when the air storage chamber enters and exits, and simultaneously controls the opening and closing of the air inlet electric valve 1306 and the air outlet electric valve 1307, so that the safe operation of the air storage is ensured.
Further, the annular channel 7 is provided with a gas supplementing and pressure releasing system 14, and the gas supplementing and pressure releasing system 14 comprises an annular gas distribution pipe 1401, a gas supplementing main pipe 1402, a gas supplementing fan set 1403, a pressure sensor 1404, a wind speed sensor 1405, a pressure releasing main pipe 1406, a safety pressure releasing device 1407, a gas leakage sensor 1408, a gas exhaust pipe 1409 and a gas exhaust device 1410;
the annular gas distribution pipe 1401 is arranged in the annular channel 7, a plurality of circles of gas holes are formed in the top of the annular gas distribution pipe 1401, and the gas supplementing and pressure releasing system 14 is communicated with the annular channel protection chamber through the annular gas distribution pipe 1401; the annular gas distribution pipe 1401 is communicated with the gas supplementing main pipe 1402 on one side and the pressure relief main pipe 1406 on the other side, the gas supplementing main pipe 1402 and the pressure relief main pipe 1406 are respectively provided with a plurality of gas supplementing main pipes 1402 which respectively penetrate through the outer ring beam foundation 6 to be communicated with the gas supplementing fan set 1403, a one-way check valve 1411 is arranged between the gas supplementing main pipe 1402 and the gas supplementing fan set 1403, and the plurality of pressure relief main pipes 1406 respectively penetrate through the outer ring beam foundation 6 to be communicated with the safety pressure relief device 1407;
as shown in fig. 3, the air make-up fan set 1403 is connected to a fan controller 1412, and the fan controller 1412 is connected to the pressure sensor 1404, the wind speed sensor 1405, and the gas leakage sensor 1408, respectively; the pressure sensor 1404 is arranged on the outer surface of the outer membrane 3, the wind speed sensor 1405 is arranged outside the gas storage, the gas leakage sensor 1408 is arranged in the annular channel protection chamber, and the gas leakage sensor 1408 is electrically connected with the exhaust device 1410 and the gas outlet electric valve 1307;
one end of the exhaust pipe 1409 is opened and arranged at the bottom of the annular channel protection chamber, the other end of the exhaust pipe 1409 passes through the outer ring beam foundation 6 to be communicated with the exhaust device 1410, and the exhaust pipe 1409 is also communicated with an exhaust port 1413 arranged at the top of the annular channel protection chamber through an air duct; the air supplementing fan set 1403, the safety pressure relief device 1407 and the exhaust device 1410 are respectively arranged outside the air storage.
By arranging the air supplementing and pressure releasing system 14, the constant pressure and normal operation of the air storage can be kept, when the air storage chamber is in air intake, the inner membrane 2 floats upwards, and the safety pressure releasing device 1407 automatically discharges redundant air in the annular channel protection chamber through the pressure releasing main pipe 1406; when the air storage chamber outputs air outwards, the inner membrane 2 drops, the air pressure in the annular channel protection chamber is reduced, the pressure sensor 1404 starts the air supplementing fan set 1403 through the fan controller 1412 to supplement air to the annular channel protection chamber through the air supplementing main pipe 1402 so as to maintain the air pressure in the annular channel protection chamber constant; the safety operation of the air storage is seriously affected by the strong wind, when the wind speed outside the air storage exceeds a set value, the wind speed sensor 1405 starts the air supplementing fan set 1403 through the fan controller 1412 to improve the air pressure in the annular channel protection chamber, and meanwhile, the air leakage pressure of the safety pressure relief device 1407 is improved to resist the strong wind; a one-way check valve 1411 is arranged between the air supplementing main pipe 1402 and the air supplementing fan set 1403, so that the air in the annular channel protection chamber can be prevented from flowing back out; the annular gas distribution pipe 1401 provides annular uniform gas supplementing and discharging for the annular channel protection chamber, can reduce the disturbance amplitude of the gas flow to the gas storage chamber, reduces the vibration to each device of the gas storage system, and better protects the working stability of each device of the gas storage system; a plurality of gas leakage sensors 1408 arranged in the annular channel protection chamber, which can monitor whether the gas in the gas storage chamber leaks and the leakage concentration, once the gas in the gas storage chamber leaks into the annular channel protection chamber, the gas leakage sensors 1408 start the air supplementing fan group 1403 to convey air into the annular channel protection chamber in real time through a fan controller 1412 electrically connected with the gas leakage sensors 1408, and simultaneously start an exhaust device 1410 to exhaust the leaked gas to the outside through an exhaust pipe 1409, and start an air outlet electric valve 1307 to enable the gas storage chamber to output the gas to the outside; when an maintainer enters the annular channel protection chamber, the air supplementing fan set 1403 is started to convey fresh air to the annular channel protection chamber through the fan controller 1412, and meanwhile, the exhaust device 1410 is started to exhaust outwards, so that the safety of the maintainer in the air storage can be ensured.
Further, the oversized flexible gas storage further comprises a main control system, a ground lamp reflection optical fiber lighting system, an explosion-proof monitoring system, a standby power supply system and a lightning protection system; the ground lamp reflection optical fiber lighting system, the explosion-proof monitoring system, the standby power supply system, the air supplementing and releasing system 14 and the air inlet and outlet pipeline system 13 are respectively connected with the main control system. The normal operation of all electromechanical devices of the gas storage system can be seriously endangered by the power interruption, so that the safe operation of the gas storage is endangered, the loss is quite large, and the power supply of the gas storage can be ensured at any time by configuring a standby power supply system; the ground lamp reflection optical fiber lighting system can provide lighting and illuminance for the overhaul and monitoring system in the gas storage; the lightning protection system can directly lead lightning into underground leakage and block lightning waves and the like led in along a power supply or a signal line.
Further, the annular channel protection chamber is provided with an access door system 15, the access door system 15 is in sealing connection with the outer membrane 3, and the access door system 15 comprises a personnel access door 1501, a vehicle access door 1502, a spare door 1503 and a plurality of safety exit emergency doors 1504. By providing the access door system 15, personnel and vehicles can enter and exit the annular passage protection chamber, and the inside of the gas storage can be installed, overhauled and maintained.
The invention provides an oversized flexible gas storage, which has huge gas storage capacity; compared with the existing steel gas holder, the main components of the gas holder such as the outer membrane, the inner membrane and the bottom membrane can be processed in a factory, the field installation is quick, the construction period is short, the manufacturing cost is low, and the overhaul is convenient; compared with an underground natural gas reservoir, the invention has loose site selection, can be built on the ground, can be built by utilizing the existing concave areas such as mountain areas and the like, and can be directly close to gas consumption areas such as natural gas and the like. The gas stored in the gas storage chamber is industrial and civil fuel gas and industrial gas represented by natural gas, shale gas, coal gas, hydrogen and the like, can meet the use requirement and has very strong practicability.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be limited to the following claims.
Claims (10)
1. The utility model provides an oversized flexible gas storage, includes carrier film (1), inner membrance (2), adventitia (3), and the air storage chamber is enclosed into with inner membrance (2) that can float from top to bottom to carrier film (1), and the outside of outer membrance (3) cover setting inner membrance (2), its characterized in that: the system also comprises a gas storage foundation (4), a gas inlet and outlet pipeline system (13) and a gas supplementing and pressure releasing system (14);
the gas storage foundation (4) is positioned at the bottom of the oversized flexible gas storage, and an inner ring beam foundation (5), an outer ring beam foundation (6) and an annular channel (7) are arranged on the gas storage foundation (4); an inner sealing and fixing assembly (8) is arranged on the inner ring beam foundation (5), the periphery of the lower edge of the inner membrane (2) is overlapped with the periphery of the edge of the bottom membrane (1) up and down, and the inner ring beam foundation (5) is sealed and fixed through the inner sealing and fixing assembly (8); an outer sealing and fixing assembly (9) is arranged on the outer ring beam foundation (6), and the periphery of the lower edge of the outer film (3) is fixed on the outer ring beam foundation (6) in a sealing way through the outer sealing and fixing assembly (9); an annular channel (7) is arranged between the inner ring beam foundation (5) and the outer ring beam foundation (6), the annular channel (7) provides a working place and a channel for people and activities of installing and overhauling equipment, and a hollow annular channel protection chamber is formed by surrounding the annular channel (7), the inner membrane (2) and the outer membrane (3);
the gas inlet and outlet pipeline system (13) is arranged in the gas storage chamber, the gas inlet and outlet pipeline system (13) comprises a gas inlet main pipe (1301), a gas outlet main pipe (1302), a distribution head (1303), a gas distribution pipeline network (1304), a shielding platform (1308) and a material level meter (1305), the gas inlet main pipe (1301) and the gas outlet main pipe (1302) are buried underground and respectively penetrate through an outer ring beam foundation (6), an annular channel (7) and an inner ring beam foundation (5) in sequence and then extend into the gas storage chamber, and the gas inlet main pipe (1301) and the gas outlet main pipe (1302) are communicated with the gas distribution pipeline network (1304) through the distribution head (1303) in the gas storage chamber; the distribution head (1303) and the gas distribution pipe network (1304) are both arranged on the bottom film (1), and a shielding platform (1308) is arranged above the gas distribution pipe network (1304); the air inlet main pipe (1301) is connected with an air inlet electric valve (1306), and the air outlet main pipe (1302) is connected with an air outlet electric valve (1307); the material level meter (1305) is arranged at the top of the annular channel protection chamber and is used for monitoring the floating height and the upper and lower limit positions of the inner membrane (2) when the air storage chamber enters and exits, and controlling the opening and closing of the air inlet electric valve (1306) and the air outlet electric valve (1307) at the same time;
the air supplementing and pressure releasing system (14) comprises an annular air distribution pipe (1401), an air supplementing main pipe (1402), an air supplementing fan set (1403), a pressure sensor (1404), an air speed sensor (1405), a pressure releasing main pipe (1406), a safety pressure releasing device (1407), an air leakage sensor (1408), an air exhaust pipe (1409) and an air exhaust device (1410);
the annular gas distribution pipe (1401) is arranged in the annular channel (7), a plurality of circles of gas holes are formed in the top of the annular gas distribution pipe (1401), and the gas supplementing and pressure releasing system (14) is communicated with the annular channel protection chamber through the annular gas distribution pipe (1401); the annular gas distribution pipe (1401) is communicated with the gas supplementing main pipe (1402) on one side, the other side is communicated with the pressure relief main pipe (1406), the gas supplementing main pipe (1402) and the pressure relief main pipe (1406) are respectively provided with a plurality of gas supplementing main pipes, the plurality of gas supplementing main pipes respectively penetrate through the outer ring beam foundation (6) to be communicated with the gas supplementing fan group (1403), one-way check valves (1411) are respectively arranged between the gas supplementing main pipe (1402) and the gas supplementing fan group (1403), and the plurality of pressure relief main pipes (1406) respectively penetrate through the outer ring beam foundation (6) to be communicated with the safety pressure relief device (1407);
the air supplementing fan set (1403) is connected with a fan controller (1412), and the fan controller (1412) is respectively connected with a pressure sensor (1404), a wind speed sensor (1405) and a gas leakage sensor (1408); the pressure sensor (1404) is arranged on the outer surface of the outer membrane (3), the wind speed sensor (1405) is arranged outside the gas storage, the gas leakage sensor (1408) is arranged in the annular channel protection chamber, and the gas leakage sensor (1408) is electrically connected with the exhaust device (1410) and the gas outlet electric valve (1307);
one end of the exhaust pipe (1409) is opened and is arranged at the bottom of the annular channel protection chamber, the other end of the exhaust pipe (1409) passes through the outer ring beam foundation (6) to be communicated with an exhaust device (1410) arranged outside the gas storage, and the exhaust pipe (1409) is also communicated with an exhaust port (1413) arranged at the top of the annular channel protection chamber through an air duct; the air supplementing fan set (1403), the safety pressure relief device (1407) and the exhaust device (1410) are respectively arranged outside the air storage.
2. The oversized flexible air reservoir of claim 1, wherein: the oversized flexible gas storage further comprises a main control system, a ground lamp reflection optical fiber lighting system, an explosion-proof monitoring system, a standby power supply system and a lightning protection system; the floor lamp reflection optical fiber lighting system, the explosion-proof monitoring system, the standby power supply system, the air supplementing and pressure releasing system (14) and the air inlet and outlet pipeline system (13) are respectively connected with the main control system.
3. The oversized flexible air reservoir of claim 1 or 2, wherein: the annular channel protection room is provided with an access door system (15), the access door system (15) is connected with the outer membrane (3) in a sealing mode, and the access door system (15) comprises a personnel access door (1501), a vehicle access door (1502), a standby door (1503) and a plurality of safety exit emergency doors (1504).
4. The oversized flexible air reservoir of claim 1, wherein: the outer film (3) is formed by splicing or welding a plurality of film materials, the outer surface of the outer film (3) is covered with a steel cable net (11), and the inner surface of the outer film (3) is provided with a heat insulation layer (12).
5. The oversized flexible air reservoir of claim 4, wherein: the tail end of the steel cable net (11) is fixed on the external sealing and fixing assembly (9), and flexible thin film solar cells are paved in the grids of the steel cable net (11).
6. The oversized flexible air reservoir of claim 1, wherein: the inner ring beam foundation (5) and the outer ring beam foundation (6) are reinforced concrete ground ring beams, and the inner ring beam foundation (5) and the outer ring beam foundation (6) are respectively provided with a plurality of pile foundations (10).
7. The oversized flexible air reservoir of claim 1, wherein: the gas distribution pipe network (1304) in the gas inlet and outlet pipe system (13) is distributed in a shape like a Chinese character 'hui', a round shape or a shape like a Chinese character 'no', and the side surface of the gas distribution pipe network (1304) is provided with air holes.
8. The oversized flexible air reservoir of claim 1, wherein: the air inlet main pipe (1301) and the air outlet main pipe (1302) in the air inlet and outlet pipeline system (13) are respectively provided with a plurality of air inlet main pipes and a plurality of air outlet main pipes which are respectively communicated with the air distribution pipeline network (1304).
9. The oversized flexible air reservoir of claim 1, wherein: the anti-static floor glue is sprayed on the ground of the ground laying film or the ground of the base film, wherein the ground of the base film is a plane or a concave surface, and the ground of the ground laying film or the ground of the base film is paved between the base film (1) and the ground of the base film.
10. A method of using the oversized flexible air reservoir of claim 1, wherein: the using method comprises the following specific processes:
air is taken in from the air storage chamber: opening an air inlet electric valve (1306), inputting air into the air storage chamber by an air inlet main pipe (1301), floating an inner membrane (2) upwards, detecting the floating condition of the inner membrane (2) by a material level meter (1305), closing the air inlet electric valve (1306) when the inner membrane (2) floats to an upper limit position, and simultaneously, automatically discharging redundant air in an annular channel protection chamber by a safety pressure relief device (1407) through a pressure relief main pipe (1406);
the air storage chamber outputs air outwards: opening an air outlet electric valve (1307), enabling an inner membrane (2) to fall, detecting the floating condition of the inner membrane (2) by a material level meter (1305), closing the air outlet electric valve (1307) when the inner membrane (2) floats to a lower limit position, simultaneously enabling a pressure sensor (1404) to detect the air pressure reduction in an annular channel protection chamber, and enabling an air supplementing fan set (1403) to supplement air to the annular channel protection chamber through an air supplementing main pipe (1402) by a fan controller (1412) so as to maintain the air pressure of the annular channel protection chamber to be constant;
when strong wind seriously affects the safe operation of the gas storage: the wind speed outside the gas storage exceeds the set value of a wind speed sensor (1405), the wind speed sensor (1405) starts a gas supplementing fan set (1403) through a fan controller (1412) to improve the air pressure in the annular channel protection chamber and improve the release pressure of a safety pressure release device (1407), and meanwhile, a one-way check valve (1411) arranged between a gas supplementing main pipe (1402) and the gas supplementing fan set (1403) prevents air in the annular channel protection chamber from flowing backwards;
in the process, a gas leakage sensor (1408) arranged in the annular channel protection chamber monitors whether the gas in the gas storage chamber leaks and the gas leakage concentration at any time, if the gas in the gas storage chamber leaks into the annular channel protection chamber, the gas leakage sensor (1408) starts a gas supplementing fan group (1403) to convey air into the annular channel protection chamber through a fan controller (1412) electrically connected with the gas leakage sensor, and simultaneously starts an exhaust device (1410) to exhaust the leaked gas to the outside through an exhaust pipe (1409), and starts an air outlet electric valve (1307) to enable the gas storage chamber to output the gas to the outside.
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| CN110332454B (en) * | 2019-07-03 | 2022-03-01 | 昆明理工大学 | Double-cover semi-underground wet gas holder capable of automatically processing leakage and method for automatically processing leakage |
| CN113280252B (en) * | 2021-05-11 | 2022-07-19 | 百穰新能源科技(深圳)有限公司 | Gas storage, energy storage device, control method and installation method of gas storage |
| CN117404600B (en) * | 2023-12-13 | 2024-03-19 | 百穰新能源科技(深圳)有限公司 | Method for installing gas storage |
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