3081results about "Non-pressured vessels" patented technology

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 liquid cargo containment system and a maintenance method, and belongs to the technical field of natural gas storage, the liquid cargo containment system comprises a main shielding layer, a secondary shielding layer, an insulating layer and a detection pipeline, one end of the detection pipeline is connected with a gas input pipeline, the other end of the detection pipeline is provided with a first branch pipe and a second branch pipe, and the first branch pipe extends between the main shielding layer and the secondary shielding layer; the first branch pipe extends into the insulating layer, the second branch pipe extends into the insulating layer, a first temperature monitoring unit is arranged in the first branch pipe, a second temperature monitoring unit is arranged in the second branch pipe, and a first pressure difference detection unit is further arranged between the first branch pipe and the second branch pipe. Through dual monitoring of the peripheral temperature and pressure of the thin film tank, accurate monitoring of the liquid cargo leakage condition is ensured, and the problem that the liquid cargo leakage condition is misreported due to pressure fluctuation caused by other factors in a conventional monitoring mode is solved.

The invention relates to the field of low-temperature liquefied gas storage equipment, and discloses a low-temperature liquefied gas film storage tank and an installation method thereof.The low-temperature liquefied gas film storage tank comprises an outer tank and a plurality of insulation box structures installed on the outer tank; the insulation box structure comprises a secondary insulation box, a secondary shielding layer, a main plywood and a main shielding layer which are arranged in sequence, and the corrugation position of the main shielding layer corresponds to the corrugation position of a corrugated plate in the secondary shielding layer; a gap is formed between every two adjacent insulation box structures, a secondary layer connecting plate is connected between every two adjacent secondary shielding layers, a main layer connecting plate is connected between every two adjacent main shielding layers, and the secondary layer connecting plates and the main layer connecting plates are located above the gaps. The gap between the adjacent insulation box structures can be effectively processed, and the integrity and the sealing performance of the shielding layer are improved.

The invention discloses an offshore multi-energy combined supply system based on constant-pressure compressed carbon dioxide energy storage and an operation method of the offshore multi-energy combined supply system. The system comprises a working medium storage device, a heat energy storage device, a charging process module, a gas-liquid conversion loop, a discharging process module, a cold energy supply module and a heat energy supply module. By improving the energy release process structure of the compressed carbon dioxide energy storage system, the pressure of high-pressure carbon dioxide is reduced to normal pressure after primary expansion, so that low-temperature cold energy is generated while power is generated, consumption of stored heat is saved, residual stored heat is used for heat supply, the comprehensive utilization rate of energy is increased, and combined supply of cooling, heating and power is achieved; the system further comprises an integrated thermally-driven combined cooling and power supply subsystem capable of switching power generation / refrigeration modes, organic Rankine cycle and jet refrigeration cycle are highly integrated, investment cost and space occupation are reduced, redundant heat energy is flexibly and efficiently converted into electric energy or cold energy, and the flexibility of multi-energy combined supply of the system is improved.

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.

The utility model relates to a liquid hydrogen storage tank with a vaporizer. Comprising an inner shell used for containing liquid hydrogen; the pressurizing unit comprises a pressurizing pipeline, and a pressurizing valve, a pressurizer and a pressurizing and pressure regulating valve which are sequentially arranged on the pressurizing pipeline in the medium flowing direction; one end of the pressurizing pipeline is connected with the bottom end of the inner shell, and the other end is communicated with the gas-phase space of the inner shell; the pressurizing unit is used for maintaining the pressure of the inner shell at a first pressure; the air supply unit comprises an air supply pipeline, and an air supply valve, a vaporizer, a pressure reducing valve and a check valve which are sequentially arranged on the air supply pipeline in the medium flowing direction; one end of the gas supply pipeline is connected with the bottom end of the inner shell, and the other end is connected with external gas utilization equipment; the vaporizer is used for converting liquid hydrogen into hydrogen, and the pressure reducing valve is used for reducing the pressure of the gasified hydrogen to the pressure required by gas equipment; and the exhaust unit is communicated with the gas phase space of the inner shell and is used for exhausting the overpressure gas. According to the storage tank, gas supply parameters can be changed according to gas use requirements of users, and the applicability is high.

The invention discloses a corrugated plate for a low-temperature liquid cargo system, a shielding layer and the low-temperature liquid cargo system. The cryogenic liquid cargo system may be a storage tank or container for storing cryogenic liquid, such as liquefied natural gas. The corrugated plate comprises a corrugated plate plane layer and corrugations formed on the corrugated plate plane layer, the corrugations comprise first corrugations and second corrugations intersecting with the first corrugations, and each of the first corrugations and the second corrugations is provided with a protruding part, a concave part and a twisting part in the longitudinal extending direction of the first corrugations and the second corrugations. The convex part and the concave part are connected together through the torsion part in the longitudinal extending direction, the convex part protrudes towards the interior of the low-temperature liquid cargo system relative to the corrugated plate plane layer, and the concave part protrudes away from the interior of the low-temperature liquid cargo system relative to the corrugated plate plane layer. According to the scheme, the convex-concave matching structure is arranged in the longitudinal extension direction of the corrugations, so that the effect of blocking gas convection in the corrugated plate can be effectively achieved, evaporation of LNG in the storage tank can be effectively reduced, and then damage to goods is reduced.

Disclosed is a collar for mounting on a top portion of a pressurized tank. The collar comprises: a body, a fastening system and a rotatable lid disposed on the collar. Further provided is a collar with a window cut-out for viewing tank data and a regulator mounting clip for securing a regulator of the tank in place during use.

A liquid cryogen stored in a liquid cryogen space of a closed insulated cryogenic storage vessel is subcooled by allowing it to enter into a conduit disposed in the liquid cryogen space where it is expanded by a pressure reducer in the conduit, thereby producing a cooled biphasic mixture of the cryogen in liquid and vaporized forms. The cooled biphasic mixture has a temperature lower than that of the liquid cryogen in the liquid cryogen space. Heat is transferred across the conduit from the liquid cryogen in the liquid cryogen space to the cooled biphasic mixture.

A gas supply system for a high-pressure gas consuming appliance and a low-pressure gas consuming appliance of a floating structure including a tank containing the gas is disclosed. The supply system includes: a first supply circuit and a second supply circuit; a gas return line; and a first heat exchanger and a second heat exchanger configured to carry out a heat exchange between the gas of the first supply circuit and the gas circulating in the return line. The first supply circuit includes an additional pump.

The invention discloses a low-temperature thin film storage tank pump tower base device, and relates to the field of thin film tanks, the low-temperature thin film storage tank pump tower base device comprises a limiting device and a main support, a plurality of secondary supports are arranged on the main support, the limiting device is arranged on the plurality of secondary supports, and a main anchoring plate and a secondary anchoring plate are arranged on the secondary supports; the peripheral sides of the main anchoring plate and the secondary anchoring plate are connected with a main corrugated plate and a secondary corrugated plate respectively. The height difference after the four supporting seats are fixed is reduced, the fixing firmness of the primary shielding layer and the secondary shielding layer is improved, damage to the supporting seats is reduced, and the connecting firmness of the supporting seats is improved.

A system and method for hydrogen storage, and delivery. The system includes a hydrogen storage tank, a first pump disposed within the hydrogen storage tank, and a second pump disposed outside of the hydrogen storage tank. The hydrogen storage tank is to store gaseous hydrogen and liquid hydrogen. The first pump is to pump out liquid hydrogen out of the storage tank, producing a low pressure flow. The second pump is to receive this low pressure flow and produces a high pressure flow of liquid hydrogen. The system can also include a thermal device disposed within the hydrogen storage tank to heat gaseous hydrogen when a pressure within the hydrogen storage tank drops below a predetermined minimum pressure. The system can also include a heat exchanger to receive the high pressure flow of liquid hydrogen from the second pump.

The utility model provides a molecular sieve filling device for a low-temperature storage tank. The molecular sieve filling device comprises a container assembly, an upper cover assembly installed at a feeding port of the container assembly, a discharging pipe system connected with a discharging port of the container assembly and a purging pipe system. Two independent material storage cavities and a discharging cavity located below the material storage cavities are formed in the container assembly, the two material storage cavities are jointly connected with a discharging pipe, the discharging pipe is connected with a feeding switch assembly, and outlets of the two material storage cavities can be closed at the same time or opened in a time-sharing mode by operating the feeding switch assembly; a pull valve which can be connected with a molecular sieve filling opening of the low-temperature storage tank is arranged at the outlet end of the discharging pipe system; inert gas conveyed by the purging pipe system can enter the discharging cavity through the material storage cavity. The storage tank interlayer is subjected to vacuum breaking through nitrogen, the molecular sieves and the expanded perlite are located in the nitrogen environment in the filling process, contact with air is reduced, the adsorption capacity of the molecular sieves is stable, the later vacuumizing efficiency is improved, and the heat preservation performance is effectively guaranteed.

The invention discloses an in-tank convection prevention device and method. The in-tank convection prevention device comprises a storage tank body, a heat insulation module, a shielding corrugated plate, a bonding connecting strip and a convection blocking strip. According to the convection prevention method, the heat insulation module is firmly fixed by bonding the connecting strips, and a gas vertical flowing channel in a gap between the storage tank body and the heat insulation module is forcibly cut off by utilizing the transversely arranged convection blocking strips; according to the storage tank, a'thermosyphon 'closed circulation loop causing heat transfer is effectively damaged, continuous gas convection is avoided, and therefore structural damage or deformation of the storage tank body caused by local low-temperature impact is effectively prevented while the overall cold insulation performance is greatly improved and the cold loss is reduced.

The invention relates to a self-repairing hydrogen barrier composite coating for a hydrogen storage or transportation device as well as a preparation method and application of the self-repairing hydrogen barrier composite coating, and belongs to the technical field of hydrogen energy storage and transportation materials. The coating is of a double-layer structure and is composed of a bottom coating and a humidity response microcapsule self-repairing barrier layer. The humidity response microcapsule is composed of a capsule core containing a polyurethane prepolymer and a hybrid capsule shell formed by polyurethane and siloxane, and has good hydrogen barrier performance and environmental response characteristics. In a certain humidity environment, the microcapsule is stimulated to release the capsule core material, and in-situ self-repairing is achieved. The problem that a traditional hydrogen-resistant coating is short of repairing capacity is solved, and the hydrogen-resistant coating has a wide application prospect in the aspect of improving the safety of a hydrogen conveying and storage system.

The invention discloses a solid-gas coupling hydrogen storage system and a flow and pressure coordinated regulation and control method thereof. The system comprises a gaseous hydrogen storage tank, a solid hydrogen storage tank, a hydrogen coupling regulation and control device, a hydrogen buffer tank, a solid hydrogen storage thermal management system, a high-pressure proportional valve, a low-pressure proportional valve, a three-way valve and a hydrogen storage valve. The gaseous hydrogen storage tank is connected with the hydrogen coupling regulation and control device through a pipeline, and high-pressure hydrogen is conveyed to the high-pressure inlet end of the hydrogen coupling regulation and control device. The low-pressure inlet end of the hydrogen coupling regulation and control device is connected with the solid hydrogen storage tank through a pipeline, and the outlet end of the hydrogen coupling regulation and control device is connected with the hydrogen buffer tank through a pipeline; and the pipelines of the gaseous hydrogen storage tank and the solid hydrogen storage tank are simultaneously connected with the three-way valve. According to the system, efficient and safe hydrogen storage and supply are achieved through the synergistic effect of all the components, and reliable technical innovation and support are provided for hydrogen energy application.

The invention relates to a method for conveying a cryogen (H2) from a storage container (2) to a load (3), having the following steps: a) introducing (S1) the cryogen (H2) from the storage container (2) into a conditioning container (8, 9, 10), b) bringing (S2) the cryogen (H2) received in the conditioning container (8, 9, 10) to its supercritical state, and c) discharging (S3) the cryogen (H2) from the conditioning container (8, 9, 10) to the load (3). The cryogen (H2) received in the conditioning container (8, 9, 10) is kept in the supercritical state during step c) in that a part of the cryogen (H2) is removed from the conditioning container (8, 9, 10), heated, and returned to the conditioning container (8, 9, 10) using a pressure build-up system (28, 29, 30), wherein the cryogen is received in a volume (31, 33) of the pressure build-up system (28, 29, 30) and is enclosed between valves (V5.1, V6.1; V5.1, V7.1) in the volume (31, 33), heat is supplied to the cryogen enclosed in the volume, and when a desired target pressure of the enclosed cryogen is reached, the cryogen is returned to the conditioning container (8, 9, 10).

A liquid hydrogen storage tank capable of eliminating thermal stratification with low turbulence relates to the field of liquid hydrogen storage and comprises a tank body and a spray rod mechanism arranged in the tank body, the spray rod mechanism is communicated with a liquid hydrogen circulation pipeline, and liquid hydrogen in the tank body is extracted by the liquid hydrogen circulation pipeline and sprayed to a heat leakage point through the spray rod mechanism. The spray rod mechanism comprises a main guide pipe and a plurality of branch guide pipes, the tail ends of the branch guide pipes are provided with distribution assemblies attached to the heat leakage points, and the distribution assemblies are of structures defined by elastic metal wire meshes and filled with porous media, so that liquid hydrogen is dispersed and sprayed to the heat leakage points through the porous media, and turbulence of the liquid hydrogen is reduced. The spray rod mechanism is arranged in the storage tank, and the liquid hydrogen is directly sprayed to the heat leakage point by utilizing the guide pipe and the distribution component of the spray rod mechanism, so that turbulence of the liquid hydrogen in the tank is reduced, and evaporation of the liquid hydrogen caused by heat leakage is slowed down.

This invention provides a hydrogen-heated solid-state hydrogen storage device and a solid-state hydrogen storage system. The solid-state hydrogen storage device includes a hydrogen inlet, a hydrogen diffusion section, several reaction tubes, a hydrogen collection section, and a hydrogen outlet. The first end of each reaction tube is connected to the hydrogen diffusion section, and the second end of each reaction tube is connected to the hydrogen collection section. A vent pipe is installed inside each reaction tube, and hydrogen storage material is filled between them. The increased volume due to the expansion of the hydrogen storage material can be absorbed by the deformation of the vent pipe. The solid-state hydrogen storage system consists of the aforementioned hydrogen storage device, a heater, a cooler, a circulating fan, and circulating pipelines. In the solid-state hydrogen storage device provided by this invention, hydrogen directly exchanges heat with the hydrogen storage material, improving the mass and heat transfer process and increasing the system's heat exchange efficiency.

The utility model relates to a coupling energy supply system based on LNG and a fuel cell, a gas supply unit comprises an LNG storage tank and an LNG vaporizer which are connected through an LNG pipeline, the LNG vaporizer is connected with a downstream gas pipeline through a gas supply pipeline, a power generation unit comprises a cooling heat exchanger and the fuel cell, a cooling loop is arranged between the secondary side of the cooling heat exchanger and the fuel cell, and the fuel cell is connected with the cooling loop. A primary side inlet of the cooling heat exchanger is connected with the LNG storage tank through a BOG pipeline, a primary side outlet of the cooling heat exchanger is connected with a gas inlet of the fuel cell through a fuel pipeline, electric energy generated by the fuel cell is merged into a user electric power internal network, and the system has the advantages of being good in stability and high in safety.

The utility model provides an efficient depressurization device for an LNG storage tank, and relates to the technical field of LNG storage tanks, the efficient depressurization device for the LNG storage tank comprises a tank body, a supporting structure is arranged below the tank body, the tank body extends in the horizontal direction, pressure gauges are arranged at the two ends of the tank body respectively, a connecting pipe is fixedly arranged above the tank body, and the upper end of the connecting pipe is connected with a depressurization pipe; the upper end of the condensation pipe is connected with an input pipe, and the lower end of the condensation pipe is connected with an output pipe; a connecting pipe is arranged in the connecting pipe, a pressure reducing pipe is arranged in the connecting pipe, a through pipe is arranged below the pressure reducing pipe, the through pipe is inserted into the connecting pipe to connect the pressure reducing pipe and the connecting pipe, a control valve is arranged in the connecting pipe, and a sealing ring is arranged between the control valve and the through pipe. Pollution caused by interaction of gas and air in the storage tank is avoided, and by arranging a positioning column and a dismounting assembly, the depressurization pipe is convenient to dismount.

The invention discloses a film type liquid cargo containment system which comprises a plane insulation module, a corner insulation module and a nitrogen pipeline, the plane insulation module and the corner insulation module are fastened on the inner wall of a storage tank cabin, and each of the plane insulation module and the corner insulation module is composed of a main layer insulation module and a secondary layer insulation module. The main layer insulation module is fixed above the secondary layer insulation module to form step surfaces, a first bridging module, a second bridging module and a corner region bridging module are respectively mounted on the step surfaces at different positions, and nitrogen pipe mounting grooves are formed in the first bridging module, the second bridging module and the corner region bridging module through which a nitrogen pipeline passes; the arranged nitrogen pipe mounting grooves are connected to form a nitrogen arrangement pipeline; the invention further discloses a nitrogen pipeline mounting method. According to the thin film type liquid cargo containment system, the nitrogen pipelines are embedded in the bridging modules, so that the flatness of the upper surface of the main layer insulation structure of the containment system can be kept, and the thin film type liquid cargo containment system is adaptive to more types of corrugated plate structures.

The invention relates to a rotary butt joint type bottom surface corrugation structure, and relates to the technical field of low-temperature liquefied gas storage, the rotary butt joint type bottom surface corrugation structure comprises corrugation subsections, each corrugation subsection comprises a wall surface corrugation section and a bottom wall corrugation section, a plurality of corrugation subsections surround to form a bottom surface corrugation, the number of the corrugation subsections is 8 + 8n, n is a positive integer greater than zero, and n is a positive integer greater than zero. The bottom wall corrugated section comprises a first rectangular corrugated section, a second rectangular corrugated section and a third rectangular corrugated section, and the first rectangular corrugated section is located on an internally tangent square of an externally tangent circle of the bottom wall corrugated section; the second rectangular corrugated section is located on an isosceles triangle with the side length of the first rectangular corrugated section as the bottom and the farthest distance from the first rectangular corrugated section to the wall surface corrugated section as the height, and the third rectangular corrugated section is located on the portion, not filled with the first rectangular corrugated section and the second rectangular corrugated section, of the bottom wall corrugated section. The method has the effect of reducing the types of customized turning pieces.

The invention belongs to the field of life, and particularly relates to a thermos bottle with visible water storage capacity. The thermos bottle comprises a shell and an inner container arranged inside the shell. A base capable of vertically moving is mounted at the bottom of the shell, an elastic airbag is fixedly connected between the upper end of the base and the lower end of the inner container, a vertical strip opening is hermetically connected onto the side wall of the shell, a transparent tube is fixedly connected into the strip opening, the lower end of the transparent tube is communicated with the elastic airbag, and a piston block is hermetically connected into the transparent tube. The quantity of water in the thermos bottle can be known by observing the position of a piston block, a piezoelectric ceramic is used for power generation when water is injected, an LED (light-emitting diode) lamp in the piston block can emit light, the quantity of the water in the thermos bottlecan be known conveniently by people, and scalding is avoided. In addition, by the aid of an annular air cushion, when the thermos bottle falls, a good buffering function can be achieved, and impact onthe inner container is reduced.

An aircraft comprises a fuselage; wings; engines connected to the wings; a set of liquid hydrogen tanks; a vent located on the tail on the fuselage; a conduit system connecting the liquid hydrogen tanks to the vent; and a controller. The controller is configured to control the conduit system to remove gaseous hydrogen in the set of liquid hydrogen tanks to travel through the conduit system and exit at the vent in response to pressure in the set of liquid hydrogen tanks being greater than a specified tolerance.

The invention relates to a cryogenic fluid transfer device comprising a first tank storing a cryogenic fluid, a second cryogenic receiving tank, a fluid transfer circuit connecting the tanks and comprising a first pipe that connects the upper parts of the first and second tanks and has a first valve, a second pipe that connects the lower part of the first tank to the second cryogenic tank and has a pump, the pump and the first valve being configured to place the upper parts of the first and second tanks in fluidic communication, the first pipe comprising a bypass portion equipped with a heater and a set of one or more valves configured to make it possible to modify the temperature of the flow of gas transferred from the second cryogenic tank to the first tank via the first pipe.

The invention discloses a low-temperature storage tank and fluid transportation equipment, and relates to the technical field of fluid transportation, and the low-temperature storage tank comprises a protective shell and an enclosure system. The protective shell is provided with an assembly cavity. The enclosure system is installed in the assembly cavity, the enclosure system can cover the inner wall of the assembly cavity and form a containing cavity, and the containing cavity can store low-temperature fluid. The enclosure system comprises a plurality of heat insulation units spliced with one another and splicing assemblies arranged on the heat insulation units, each splicing assembly comprises at least one group of first splicing part and second splicing part which are matched with each other, and the first splicing parts are detachably connected with the second splicing parts. A heat passage is formed between every two adjacent heat insulation units, a first sealing face is arranged on the first splicing part, a second sealing face is arranged on the second splicing part, and in the low-temperature fluid storage process, the first sealing faces and the second sealing faces abut against each other and block the heat passages. The situation of cold leakage between the two heat insulation units can be reduced or even prevented through the structure which is more shrunk and tighter in sealing.

The invention provides low-carbon steel for a seamless gas cylinder as well as a preparation method and application of the low-carbon steel. The preparation method comprises the steps that S1, raw materials are prepared according to components of the low-carbon steel for the seamless gas cylinder; s2, the raw materials are smelted, and a first steel billet is obtained; heating the first steel billet to obtain a second steel billet; s3, under the conditions that the initial rolling temperature ranges from 1120 DEG C to 1180 DEG C, and the final rolling temperature ranges from 880 DEG C to 980 DEG C, at least eight passes of hot rolling are conducted on the second steel billet, and a hot-rolled steel billet is obtained; s4, cooling the hot-rolled steel billet to obtain a third steel billet; and S5, the third steel billet is subjected to heat treatment, and the low-carbon steel for the seamless gas cylinder is obtained. Alloy element components of the low-carbon steel for the seamless gas cylinder are meticulously designed, meanwhile, a preparation technology is cooperatively matched, the comprehensive mechanical property of the obtained low-carbon steel is optimized, and more importantly, the low-carbon steel shows excellent impact toughness under the low-temperature condition.