3985results about "Vessel walls" patented technology

The invention discloses an enclosure system of a low-temperature storage tank and transportation equipment, and relates to the technical field of fluid transportation, the enclosure system is installed on the inner wall of the low-temperature storage tank, the enclosure system comprises a plurality of heat insulation modules installed on the inner wall of the storage tank, the heat insulation modules are spliced and cover at least part of the inner wall of the storage tank, and the heat insulation modules are arranged on the inner wall of the storage tank; assembling grooves are formed in the splicing positions of the heat insulation modules; the bridging blocks are installed in the assembling grooves, and every two adjacent heat insulation modules can be connected together through the corresponding bridging blocks; the shielding module is connected with the heat insulation module, the shielding module comprises a first shielding layer, a second shielding layer and a third assembly plate, the first shielding layer and the second shielding layer are arranged in a spaced mode, and the third assembly plate is located between the first shielding layer and the second shielding layer. According to the invention, a better shielding effect can be realized by arranging two or more shielding layers, and the first shielding layer and the second shielding layer are arranged at intervals, so that the capacitive coupling effect between the shielding layers is reduced, and the penetrating power of electromagnetic waves is reduced.

The invention relates to the technical field of low-temperature storage tank installation, in particular to a low-temperature storage tank heat insulation module installation construction method which comprises the steps that expansion bolts are implanted into preset point positions of the inner wall of a low-temperature storage tank, inner wall morphology data are obtained through three-dimensional laser scanning, and a point cloud model is generated. A BIM system is used for constructing a three-dimensional model of the installation datum plane, the theoretical leveling height of each expansion bolt point position is calculated, and a leveling parameter instruction set is generated. And a servo motor of the bolt tightening equipment is driven to rotate the ball nut, so that the leveling gasket moves to the target height. And a press-fitting path is generated, a press-fitting mechanical arm is controlled to align the preformed hole of the heat insulation module to the screw part of the expansion bolt and press-fit, and the surface of the heat insulation module is fully attached to the surface of the leveling gasket. And a fastening nut is installed on the screw part of the expansion bolt, three-dimensional deviation analysis is carried out, and iterative correction is carried out. Compared with the prior art, the effects of shortening the construction period, improving the leveling precision, reducing stress concentration, ensuring long-term stability and the like are achieved.

The invention discloses a tunnel type underground gas storage combined with temperature control, belongs to the technical field of compressed air energy storage, and can solve the problems that the cost of temperature control measures in an existing gas storage is high, and maintenance is difficult. The gas storage comprises a lining; the sealing structure covers the inner wall surface of the lining; the breathable heat conduction structure sleeves the inner side of the sealing structure; an annular cavity is formed between the sealing structure and the breathable heat conduction structure; the annular partition pieces are sequentially arranged in the annular cavity in the axial direction of the gas storage and used for dividing the annular cavity into a first temperature control area and other temperature control areas which are sequentially arranged, and the simulated operation temperature of each temperature control area is sequentially increased from the first temperature control area; a water storage bag is arranged in each temperature control area; and the water circulation structure is arranged on the outer side of the gas storage, communicates with each water storage bag and is used for forming a circulation water path with the water storage bags. The method is used for temperature control of the tunnel type underground gas storage.

The invention discloses a corrugated through type pump tower base and a mounting method thereof. The corrugated through type pump tower base comprises an upper structure and a lower structure, wherein the bottom of the upper structure is connected with the top of the lower structure; a groove is formed between the upper structure and the lower structure; the groove is formed in the circumferential direction of the bottom of the upper structure; the grooves are used for enabling shielding layer corrugations of the film storage tank to directly penetrate through, and the corrugations are located between the grooves and the top of the lower structure. The problem that the pump tower base interferes with the corrugation continuity can be solved.

Disclosed in the present invention are an underground gas storage device for compressed air energy storage and a construction method therefor. The underground gas storage device for compressed air energy storage comprises an underground gas storage cavern, the underground gas storage cavern being formed of a plurality of underground gas storage cavern sections, wherein a connecting tunnel is provided between two non-adjacent underground gas storage cavern sections, a vertical shaft is provided at the top end of the connecting tunnel, and a sealing plug is provided in the intersection between the vertical shaft and the connecting tunnel; a gas intake pipeline and a gas output pipeline are provided in the vertical shaft, and a sump is provided on an outer bottom wall of the connecting tunnel; a first drainage ditch is provided around the top face edge of the sealing plug in the vertical shaft, and the first drainage ditch is in communication with the sump; and a drainage blind pipe assembly is provided on the periphery of the underground gas storage cavern sections, and the drainage blind pipe assembly is in communication with the sump via a second drainage ditch arranged at the outer bottom wall of the connecting tunnel. The present invention can achieve one-time excavation forming, without transformation and with relatively low construction difficulty, and can effectively reduce the influence of underground water on the underground gas storage cavern during a construction period, operation period and maintenance period.

The invention discloses an underground gas storage prestress lining structure and a construction method, and relates to the technical field of underground gas storage, the underground gas storage prestress lining structure comprises a lining layer formed by concrete pouring and internally provided with prestress steel bars; the sealing layer is arranged on the inner side of the lining layer and defines a gas storage chamber; the sliding layer is arranged between the lining layer and the sealing layer. The arrangement of the prestressed reinforcements can counteract part of internal pressure of the gas storage, so that the problem of concrete cracking is relieved. The lining layer is divided into the first lining layer and the second lining layer, the tensioning notch is reserved in the bottom of the first lining layer and provides sufficient tensioning space for the prestressed steel bars, the tensioning effect of the prestressed steel bars is ensured, the second lining layer is formed in the tensioning notch in a pouring mode after the prestressed steel bars are tensioned, and the integrity of the lining layer is ensured. After the sealing layer is constructed, grouting is conducted on the gap between the lining layer and the sliding layer, it is guaranteed that grouting is compact and complete, stress concentration is reduced, and the problem of concrete cracking is further relieved.

The invention discloses ultralow-temperature high manganese steel and a manufacturing method of an ultralow-temperature high manganese steel plate. The ultralow-temperature high manganese steel comprises the following components in percentage by weight: 0.35-0.55% of C, 0.01-0.10% of Si, 20.00-30.00% of Mn, 0.01-0.10% of Al, less than or equal to 0.005% of P, less than or equal to 0.003% of S, 3.0-5.0% of Cr, 0.3-1.0% of Cu, 0.2-1.20% of Ni, less than or equal to 0.008% of N, less than or equal to 0.002% of O, less than or equal to 0.0002% of H and the balance of Fe and inevitable impurity elements. The manufacturing method of the ultralow-temperature high manganese steel plate comprises the steps of molten iron pretreatment, K-OBM-S converter smelting, LF refining, continuous casting, annealing and coping, hot rolling, online solution treatment and the like. According to the method, high steel purity, low phosphorus and sulfur content, small segregation of the casting blank and the steel plate, good macrostructure of the casting blank and no crack on the surface and in the casting blank can be guaranteed, and the finished steel plate has the characteristics of low yield ratio, high tensile strength, high ultralow-temperature toughness, small thermal expansion coefficient, good fatigue resistance and the like; through the implementation of the invention, the manufacturing cost of the steel for the liquefied natural gas storage tank can be reduced to 1 / 3 of that of 9% Ni steel in the prior art.

The invention belongs to the technical field of underground gas storage, and particularly relates to a long-term efficient hydrogen storage composite lining structure for an underground rock cavern and a preparation method of the long-term efficient hydrogen storage composite lining structure. The long-term efficient hydrogen storage composite lining structure for the underground rock cavern comprises surrounding rock and an internal composite structure of the surrounding rock. The surrounding rock reinforcing layer is formed by pressure pre-grouting in surrounding rock and can resist tensile stress transmitted to the surrounding rock by internal air pressure and enhance air tightness; the permeable layer is arranged on the inner side of the surrounding rock reinforcing layer and can discharge underground water to prevent hydrostatic pressure from causing extrusion deformation damage to the concrete bearing layer during construction and causing instability of the sealing steel lining; the reinforced concrete bearing layer is arranged on the inner side of the permeable layer and the outer side of the slip layer, and micro self-healing capsules capable of repairing cracks and enhancing sealing performance are evenly added in the injection molding process; the anti-drag sliding layer is arranged between the steel lining and the bearing layer and inhibits shear damage of the sealing steel lining to the bearing layer under high internal pressure; the steel lining sealing layer is arranged on the inner side of the sliding layer to bear part of gas load and seal gas.

The present invention relates to a method for filling a gas cartridge (200) with pressurized gas or liquefied gas, the gas cartridge (200) comprising a container (120) and a valve (100) which are connected to one another by a threaded connection that can be tightened and loosened by rotation about a longitudinal axis (L), the valve (100) preferably having at least one primary opening (101), which opens laterally with respect to the longitudinal axis (L), for the admission and discharge of gas when the valve (100) is open, the method having the following method steps: i. at least partially loosening the threaded connection; ii. filling the container (120) with pressurized gas or liquefied gas through a. a thread flight (104) of the at least partially loosened threaded connection; and / or b. a secondary opening (102), which opens laterally with respect to the longitudinal axis (L) and which has been opened up as a result of the threaded connection having been partially loosened, of the valve (100); and / or c. a valve-side recess (105), which has been opened up as a result of the partial loosening of the threaded connection, in a thread flight (104) of the threaded connection; iii. tightening the threaded connection.

The present invention relates to a metal hydride hydrogen storage container which is easy to disassemble and can effectively exchange heat, and relates to the technical field of hydrogen storage containers, and in particular to a metal hydride hydrogen storage container which is easy to disassemble and can effectively exchange heat. The present invention comprises: a hydrogen storage alloy tank, a sleeve, a flange and a hydrogen valve; the hydrogen storage alloy tank is installed in the sleeve, and the flange is sealed and connected by a rubber gasket and flange bolts and nuts; a hydrogen valve is installed at the center of the flange; and the interior of the hydrogen storage alloy tank is filled with hydrogen storage alloy powder. The technical solution of the present invention solves the problems in the prior art that the hydrogen storage alloy generates stress on the inner wall of the container due to lattice expansion during the hydrogen absorption process, causing the container to deform and affecting the service life of the container; the hydrogen storage alloy has poor long-term cycle stability and needs to be frequently replaced; the hydrogen storage alloy has poor thermal conductivity and the hydrogen storage device needs to transfer heat to the outside world.

The invention relates to a hot corner protection structure, a thin film enclosure system and a thin film enclosure construction technology. Comprising an upper heat insulation module, a lower heat insulation module, an embedded part, a secondary corrugated plate and an apron board. The upper heat insulation module and the lower heat insulation module are arranged on the inner wall of the outer tank in the vertical direction, a gap is formed between the upper heat insulation module and the lower heat insulation module, and main corrugated plates cover the outer sides of the upper heat insulation module and the lower heat insulation module. The embedded part is fixed to the inner wall of the outer tank and partially located on the side, close to the upper heat insulation module, of the gap. And the secondary corrugated plate is arranged between the lower heat insulation module and the main corrugated plate. The apron board is connected between the embedded part and the secondary corrugated plate and partially arranged on the side, close to the upper heat insulation module, of the gap. The embedded part, the apron board and the secondary corrugated board are sequentially connected to separate the gap from the main corrugated board, and second longitudinal corrugations are arranged on the apron board in the extending direction. According to the hot corner protection structure, the gap position of the thin film enclosure structure can be protected, and the possibility of leakage of the storage tank is reduced.

The invention relates to a hot corner protection structure and a thin film enclosure system, and relates to the technical field of thin film enclosure systems. Comprising a heat insulation module, a main corrugated plate and an embedded part. The heat insulation module is arranged on the inner wall of the outer tank body and comprises an upper heat insulation module and a lower heat insulation module, and a gap is formed between the upper heat insulation module and the lower heat insulation module. The main corrugated plate is arranged on the side, away from the inner wall of the outer tank body, of the heat insulation module and covers the upper heat insulation module and the lower heat insulation module at the same time. The embedded part is fixed on the inner wall of the outer tank body. And the secondary corrugated plate is arranged between the lower heat insulation module and the main corrugated plate. The apron board is connected between the embedded part and the secondary corrugated plate and partially arranged on the side, close to the upper heat insulation module, of the gap. Wherein the embedded part, the apron board and the secondary corrugated plate are sequentially connected and define a sealing cavity, and the gap and the main corrugated plate are arranged on the inner side and the outer side of the sealing cavity respectively. The hot corner protection structure can solve the problem that in the prior art, the boundary position of a thin film enclosure system is prone to leakage.

The invention provides a three-layer material composite insulation block for a low-temperature storage tank, a system and a construction method, and the insulation block comprises a first insulation layer, a second insulation layer, a crack arrest layer and a third insulation layer which are sequentially connected along a Z direction; the first insulating layer is made of a fiber type insulating material and extends to the outside of the second insulating layer; the second insulating layer extends to the outside of the third insulating layer; the crack arrest layer is flush with the second insulating layer and is connected with the tank body outer plate through a fastener; in the X direction, the first insulating layer abuts against the first insulating layer in the adjacent three-layer material composite insulating block used for the low-temperature storage tank. The first insulating layer can be subjected to double anti-cracking, so that the heat preservation effect is improved.

A pressure vessel is provided that has a structural shell formed by winding filaments upon a substantially cylindrical form. The structural shell has a first filament and a second filament. The first filament includes of a first material. The first filament is wound about the form in a primarily hoop direction. The second filament includes a second material. The second material is different from the first material. The second filament is wound about the form in a primarily helical direction. The first filament and second filament are interwoven in a layer upon the form.

The present invention provides a groove-type skeleton, a sealed lining structure, an underground gas storage, which belong to the technical field of compressed air energy storage. The groove-type skeleton includes a fixed bottom plate, which has a length direction and a width direction. The fixed bottom plate forms a semi-open receiving space along the length direction at the middle axis, and the top edge of at least one side of the semi-open receiving space extends inward to form a protrusion. The sealed lining structure includes an airtight layer and the groove-type skeleton. The underground gas storage includes a concrete lining layer and the sealed lining structure. The groove-type skeleton can be combined to form a sealed lining structure, which forms an underground gas storage. Its construction period is shorter than that of welded steel plates and its cost is lower.

There is provided a segmented vacuum jacketed tank system. The system includes a segmented structurally integrated vacuum tank having a vacuum tank main portion between vacuum tank end portions. The vacuum tank main portion includes a vacuum tank skin having an outer surface and an inner surface, vacuum tank skin segments, and a longitudinal cross section with a profile geometry configured for buckling prevention for the vacuum tank skin under external pressure loads. The vacuum tank main portion includes multipurpose stiffener member(s) configured to carry one or more of system transport line(s), a liquid fuel, or a nitrogen gas in an interior. The system includes a pressure tank within the segmented structurally integrated vacuum tank. The pressure tank is configured to store a cryogenic fluid and includes a pressure tank main portion between pressure tank end portions. The system further includes a vacuum cavity.

A tank system includes a vacuum tank and a pressure tank. The vacuum tank has a vacuum tank main portion extending between vacuum tank end portions. The pressure tank is mounted within the vacuum tank, and has a pressure tank main portion extending between pressure tank end portions. The tank system includes a deflection control system comprising at least one elongate support member extending from a vacuum tank first side of the vacuum tank main portion, and passing through an opening in a pressure tank first side of the pressure tank main portion, and coupled to a pressure tank second side opposite the pressure tank first side. The elongate support member is configured to support the pressure tank main portion and reduce deflections of the pressure tank main portion relative to the vacuum tank main portion when the tank system is subjected to a load.

Membrane tank for containment of fluids at temperature that can differ significantly from ambient temperature, for example for containing a cryogenic fluid, wherein the membrane tank comprises, in direction from an inner containment volume: a primary membrane that is fluid tight, facing the contained fluid in operation and functioning as the primary fluid barrier, an insulation layer, surrounding the membrane on the outside, an outer structure, such as a ship hull or bulkhead or other structure, wherein the outer structure supports the insulation layer and primary membrane inside and carries the resulting forces thereby, and at least one opening for loading and unloading of fluid, and an optional secondary membrane if the outer structure is a steel structure becoming brittle at cryogenic temperature, such as a ship hull outer structure, the secondary membrane dividing the insulation layer into an inner insulation between the primary and secondary membranes and an outer insulation between the secondary membrane and the outer structure, wherein the primary membrane comprises areas of flat, curved or double curved shape and a corrugation in between said areas, wherein said areas are fastened to the underlaying insulation and the corrugations are taking up thermally induced strain. The membrane tank is distinguished in that it further comprises a coupling part for connecting a vacuum pump operatively to the whole insulation layer or the inner insulation layer, for enabling vacuum in the whole insulation layer or the inner insulation layer, during loading, containment and unloading of cryogenic fluid.

A gaseous fuel storage system includes: one or more storage tanks, each having a first end and a second end, the first end of each tank having a connection fitting; a piping and valving assembly coupled to the connection fitting, wherein each of the one or more tanks is coupled to an outlet line through a remote shut off valve; a first cabinet surrounding the piping and valving assembly and a portion of the first end of the storage tanks; a detector disposed in the first cabinet which operable to detect the presence of hydrogen gas and generate a signal representative of a hydrogen gas concentration; and an electronic controller operably connected to the sensor apparatus and to the remote shut off valve, wherein the electronic controller is programmed to close all of the remote shut off valves in response to detection of a first predetermined concentration of hydrogen.

There is provided a structurally integrated vacuum tank that includes a vacuum tank main portion extending between vacuum tank end portions. The vacuum tank main portion includes a vacuum tank skin forming a cylinder. The vacuum tank skin has a longitudinal cross section with a profile geometry configured for buckling prevention for the vacuum tank skin under external pressure loads. The vacuum tank skin is configured to provide a pressure barrier between an outside ambient pressure and a vacuum in an interior of the vacuum tank main portion. The vacuum tank main portion further includes a plurality of stiffener members coupled to surface portions of the vacuum tank skin. The vacuum tank skin and the plurality of stiffener members are configured to carry structural loads.

The invention relates to a heat insulation module structure and a storage container thereof, the heat insulation module structure comprises a shielding group, a heat insulation module and an anchoring assembly, and the shielding group is fixedly connected with the heat insulation module through the anchoring assembly; the shielding group comprises a main shielding layer, a main plywood and a secondary shielding layer, and the main plywood is arranged between the main shielding layer and the secondary shielding layer; the heat insulation module comprises first plywood, second plywood and a truss structure arranged between the first plywood and the second plywood, the truss structure is divided into a plurality of heat insulation filling areas in a surrounding mode, and the heat insulation filling areas are filled with reinforced polyurethane foam; the first plywood is arranged on the side, close to the shielding set, of the heat insulation module. The shielding set, the first plywood and the truss structure of the heat insulation module are fixedly connected through anchoring assemblies. The heat insulation performance, the structural strength and the construction safety of the heat insulation module structure and the storage container thereof can be effectively improved.

Container (100) with valve for storing, dispensing and transporting aircraft fuel additives, which allows speeding up and simplifying the mixing and refueling process, through numerous smart functions and an innovative valve system (40). The invention uses recyclable materials, reduces the mixing action time and / or the need to mix large quantities of liquids, guarantees the safety of things and people in the work area and is easily transportable due to its ergonomic and compact shape. The device comprises a body (10) capable of resisting impacts; a hermetic sealing system (12) to protect the contents; a coupling system (16); a sensor or a level gauge (17) connected, possibly where the working environment allows it, to an alarm system (14), suitable to warn the operator of the exhaustion of the additive by means of a luminous LED signal.

A production control system for a hydrogen storage tank includes: an operating unit, a design terminal, and a processor. The processor may be communicatively connected to the operating unit and the design terminal, respectively. The design terminal may be configured to operate a finite element simulation command stored in a storage unit. The processor may be configured to obtain the target laying parameter from the design terminal, generate an operation command based on the target laying parameter, send the operation command to the winding mechanism; and determine whether to generate an optimization command. In response to a determination of generating the optimization command, the optimization command may be generating and sent to at least one of the operating unit, the monitoring unit, and the design terminal.

A pressure vessel may include a body formed of a polymeric material. The body may extend between a first end and a second end. The body may include a center column defining a first inner volume extending between the first end and the second end. A wall may be connected to the center column. The wall may surround the center column and define a second inner volume therebetween. The second inner volume may be disposed annularly around, and fluidly separate from, the first inner volume. The pressure vessel may also include a first end cap coupled to the center column at the first end and second end cap coupled to the center column at the second end. The first end cap may close off the first inner volume at the first end. The second end cap may close off the first inner volume at the second end.

The present invention discloses a mounting structure for the angled area of ​​a cryogenic storage tank, comprising an integrated mounting assembly and a second insulating layer; the integrated mounting assembly is angled, and comprises an upper metal plate and a lower metal plate on either side of the angle, and the upper metal plate and the lower metal plate on each side are integrally connected through a supporting portion; a first insulating layer is filled between the upper metal plate and the lower metal plate; the upper metal plate is welded to the main metal plate of the bottom / wall of the storage tank to form a main shielding layer; the lower metal plate is welded to the secondary metal plate of the bottom / wall of the storage tank to form a secondary shielding layer; a stud is connected to the lower metal plate, and a mounting hole and a fixing plate are provided in the second insulating layer, and the stud passes through the mounting hole and is connected to the second insulating layer with the fixing plate. The mounting structure enables the angled area of ​​the film storage tank to have higher structural strength and better bending resistance, and has a stronger ability to resist low-temperature deformation during the actual operation of the storage tank.

A fluid storage and supply device comprising a cryogenic reservoir for storing liquefied fluid, a withdrawing circuit comprising a first withdrawing pipe having a first upstream end connected to the upper part of the reservoir and a second downstream end intended to be connected to a user member, the first withdrawing pipe comprising a first heating heat exchanger situated outside the reservoir and a second heating heat exchanger situated inside the reservoir, the withdrawing circuit comprising a set of valve(s) configured to ensure the passage of a flow of fluid circulating from the first end towards the second end by passing through the first heat exchanger and then through the second heat exchanger or by passing solely through the first heat exchanger without passing through the second heat exchanger, characterized in that the device further comprises a system for pressurizing the reservoir comprising a pressurizing pipe separate from the withdrawing circuit and comprising two ends respectively connected to the upper and lower parts of the reservoir, a vaporizing heat exchanger and a set of valve(s) configured to allow the withdrawal of liquid from the reservoir, the heating thereof in the vaporizing heat exchanger and the reintroduction thereof into the reservoir.

The invention provides a corrugated plate and a liquefied gas storage container with the same. The corrugated plate comprises a plate body, orthogonal first corrugations, orthogonal second corrugations and an intersection structure formed at the intersection position. The first corrugations are higher than the second corrugations. The intersection structure includes a top portion, a ridge, and a pit portion. The protruding height of the top is larger than that of the first corrugations. A ridge is formed in each of four quadrants formed by the corrugations orthogonally, the ridge extends from the top towards the plate body, and the overall extension direction intersects the first corrugation, the second corrugation and the height direction, respectively. There are four pit portions, each of which is located in one quadrant, is formed on an outer side surface of the first corrugation and sandwiched between a first crest and a ridge of the first corrugation, and is recessed inward with respect to the outer side surface of the first corrugation. According to the invention, the intersection structure can enable the upper surface and the lower surface of the intersection position to have uniform line length, so that uniform thickness is realized, excessive thinning is avoided, and better structural strength and anti-fatigue characteristic are realized.

The invention relates to a thermally insulated enclosure (1) comprising: a lid panel (3) and a bottom panel (2) spaced along a thickness direction (E) of the lid panel; side panels connecting the bottom panel and the lid panel along the edges of the bottom panel and the lid panel to form an interior space; a plurality of internal partitions dividing said interior space into a plurality of compartments (6); a first compartment of the plurality of compartments comprising an insulating lining filling said first compartment; the insulating lining comprising a fiber-reinforced polyurethane foam block (13) extending from the bottom panel to the lid panel and a first strip of a compressible insulating material (20) in the compressed state covering a lateral surface of the insulating block and capable of expanding to compensate for the contraction of the foam block. Figure for the abstract: 2

According to the novel thin film type enclosure system top bridge plate adhesion method, the bottom face is an arc face with the center protruding outwards and adheres to a rigid secondary screen wall, a top bridge plate adhesive coating mode is divided into a middle area and a boundary area according to the characteristics of adhesion stations, the middle area is fully laid, and the boundary area is laid in a strip mode; the coating direction of the strip-shaped top bridge plate adhesive is parallel to the short edge of the top bridge plate, the top bridge plate adhesive in the middle area is extruded from the arc-shaped top end to the two sides during installation, the adhesive preferentially fills a gap caused by a secondary layer insulation gap between the flexible secondary screen wall and the top bridge plate, and the adhesion effect of a middle key area is guaranteed. Meanwhile, the top bridge plate is rolled by the tiling machine in the direction of the adhesive strip, so that the top bridge plate can be quickly mounted in a specified layer difference range, the adhesive is uniformly laid, bubbles are quickly discharged, and the adhesion speed and the adhesion quality are improved. Random control is no longer relied on a glue head, the use amount of the adhesive in each area is accurately grasped, repeated debugging by operators is not needed, and materials and labor cost are saved.

An underground storage system for storing fluid includes a hole having a bottom, a support element including at least one opening able to receive a joining element, at least one reservoir having a longitudinal axis, a bottom end and a top end, a first closure able to close the reservoir at its bottom end, and a second closure able to close the reservoir at its top end. The top end is able to be joined to the support element via the joining element such that the reservoir is hung inside the hole and such that an axial clearance able to absorb axial thermal expansion of the reservoir remains between the first closure and the bottom.