1014 results about "Liquid gas" patented technology

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 utility model relates to the technical field of oil fume suction equipment, and provides a cleaning assembly and a range hood, and the cleaning assembly comprises a liquid storage part, a cleaning liquid container and an output pump. Wherein the liquid storage part is provided with an inlet end, a liquid outlet end and an air outlet end, and is arranged in the range hood; the cleaning liquid container is communicated with the inlet end and is suitable for providing cleaning liquid; the output pump is provided with a liquid inlet, a foam outlet and an air inlet, the liquid inlet is communicated with the liquid outlet end, the air inlet is communicated to the air outlet end, and the foam outlet outputs a liquid-air mixture. According to the cleaning assembly provided by the utility model, the output pump can pump the cleaning liquid in the cleaning liquid container into the liquid storage part so as to supplement the cleaning liquid for the liquid storage part, and meanwhile, the foam outlet of the output pump can also pump the cleaning liquid out of the liquid storage part and output a liquid-gas mixture after the cleaning liquid is mixed with gas, so that the range hood is cleaned; according to the range hood cleaning assembly, when the range hood is cleaned by the cleaning assembly, the range hood can be cleaned without arranging two water pumps, the structure is simpler, and the cost can be saved.

A liquefier device which may be a retrofit to an air separation plant or utilized as part of a new design. The flow needed for the liquefier comes from an air separation plant running in a maxim oxygen state, in a stable mode. The three gas flows are low pressure oxygen, low pressure nitrogen, and higher pressure nitrogen. All of the flows are found on the side of the main heat exchanger with a temperature of about 37 degrees Fahrenheit. All of the gases put into the liquefier come out as a subcooled liquid, for storage or return to the air separation plant. This new liquefier does not include a front end electrical compressor, and will take a self-produced liquid nitrogen, pump it up to a runnable 420 PSIG pressure, and with the use of turbines, condensers, flash pots, and multi pass heat exchangers. The liquefier will make liquid from a planned amount of any pure gas oxygen or nitrogen an air separation plant can produce.

The present application provides a corrugated plate of a liquefied gas storage tank and a liquefied gas storage tank. The corrugated plate comprises a corrugated plate body; a transverse corrugation formed on the corrugated plate body; a longitudinal corrugation formed on the corrugated plate body and comprising a first longitudinal corrugation and a second longitudinal corrugation respectively located on two opposite sides of the transverse corrugation; reinforcing ribs respectively formed on the transverse corrugation, the first longitudinal corrugation, and the second longitudinal corrugation; and an intersection portion formed at the intersection of the transverse corrugation, the first longitudinal corrugation, and the second longitudinal corrugation. The corrugated plate of the present application has high overall strength and stability. In addition, the reinforcing ribs formed on the corrugations increase the surface area of the corrugated plate in contact with liquefied gas and increase the local cross-sectional area of the corrugations, thereby further enhancing the strength and rigidity of the corrugations and the corrugated plate.

The invention relates to a wall (11) for a leaktight and thermally insulating vessel for storing a liquefied gas, said wall (11) comprising, in succession in a thickness direction from the outside to the inside of the vessel, a leaktight outer barrier (13), a thermally insulating barrier (14) and a leaktight inner barrier (15), the thermally insulating barrier (14) having a gas phase at an absolute pressure of less than 1 Pa and comprising:—a radiative multilayer insulation cover (47) which extends at right angles to the thickness direction, said radiative multilayer insulation cover (47) comprising a stack of a plurality of sheets which are made of metal or polymer material coated with a metal and which are separated from one another by a textile layer; and-insulating elements (51) which have an open-celled porous structure and are arranged between the radiative multilayer insulation cover (47) and the leaktight outer barrier (13).

The invention discloses an automatic leak-proof detection method for liquefied gas filling production, which is used for timely finding and processing leakage conditions and improving the reliability of leakage judgment and the production safety. A temperature acquisition device is arranged at the leakage point to acquire the temperature value of the leakage point in real time; the temperature variation T of the current temperature acquisition time point is calculated at each temperature acquisition time point, and in each leakage detection period, the temperature variation trend in the current leakage detection period is obtained according to the real-time temperature variation T of each temperature acquisition time point in the current leakage detection period; and judging whether leakage is generated or not according to the temperature change trend. According to the method, the principle that the temperature of leaked gas is different from the atmospheric environment temperature, and when leakage occurs, the environment temperature changes is utilized, the automatic detection function is achieved through an indirect method of measuring the temperature of a temperature collecting device installed on a leakage source, interference factors caused by environment temperature changes are eliminated, and the leakage detection accuracy is improved. Accident risks caused by gas leakage are prevented, and the production efficiency is improved.

The invention relates to the technical field of air separation, in particular to a pretreatment module of an air separation system, a high-purity air separation system and a control method.The pretreatment module comprises a precooling unit, and the precooling unit is connected with a cold source; the pre-cooling unit enables cooling water to circularly flow in the supercharging unit through a cooling water pipeline, and the supercharging unit comprises a first air compressor, a second air compressor, a high-temperature expansion machine supercharging end, a first supercharger after-cooler, a low-temperature expansion machine supercharging end and a second supercharger after-cooler which are sequentially connected in series through a main pipeline; supercharged and precooled air is expanded and cooled by the expansion unit and then enters the heat exchange unit; through the arrangement of the pre-cooling unit, the inlet and outlet temperatures of the high-temperature expansion machine and the low-temperature expansion machine are effectively controlled, reheated air returns to the air compressor, the expansion gas amount is increased, reheated gas continuously cools the air participating in rectification in the heat exchange unit, and in conclusion, the production energy consumption of a high-purity liquefied gas product is reduced.

The present invention relates to a method of starting a submersible pump used for transferring liquefied gas. The method includes starting a submersible pump (1A) disposed in a suction container (2A) of a pump apparatus (100A) to deliver liquefied gas to a suction container (2B) of a pump apparatus (100B) through a flow-path switching device (5A) in the suction container (2A), passing the liquefied gas through a flow-path switching device (5B) in the suction container (2B) while the liquefied gas bypasses a submersible pump (1B) disposed in the suction container (2B), and then starting the submersible pump (1B).

The invention relates to the field of thin film tank maintenance, and discloses a low-temperature liquefied gas storage tank heat insulation maintenance system and an installation method thereof.The low-temperature liquefied gas storage tank heat insulation maintenance system comprises a main shielding layer, a plurality of secondary-layer corrugated plates, a plurality of knots and a plurality of insulation box structures; the plurality of insulation box structures are used for being mounted on an outer tank; the insulation box structure comprises a secondary-layer insulation box, a secondary-layer steel plate and a main plywood which are arranged in sequence. A gap is formed between adjacent insulation box structures, the secondary corrugated plate is only arranged at the gap, and the side edge of the secondary corrugated plate is welded with the secondary steel plate; and the knots are arranged at the intersections of the adjacent gaps. According to the invention, the deformation of the corrugated plate is more uniform by reducing the shrinkage amount of a single insulation box, the workload of field installation can be reduced, and the procedure of traditional layered construction is optimized, so that the construction efficiency is improved, and the construction period is shortened.

A gas supply device of the disclosure includes: a liquefied gas vessel in which liquefied gas is stored; an injector configured to discharge the liquefied gas sucked from the liquefied gas vessel; a first liquefied gas supply path through which the liquefied gas is selectively allowed to flow from the liquefied gas vessel toward the injector; a gas supply path through which gas is selectively supplied to a gas utilization unit, the gas being obtained by vaporizing the liquefied gas flowing in from the injector during flowing through the gas supply path; and a drive fluid supply path through which the gas obtained in the gas supply path is selectively supplied as a drive fluid to the injector.

The invention discloses an iron-nickel alloy welding wire for welding liquefied gas equipment and a manufacturing method of the iron-nickel alloy welding wire. The iron-nickel alloy welding wire comprises, by weight, 34.5% < = Ni < = 37.5%, 0.020% < = C < = 0.050%, 0.01% < = Si < = 0.30%, 0.1% < = Mn < = 0.6%, 0.0030% < = P, 0.0015% < = S, 0.0030% < = O, 0.0020% < = N, trace < = Mg < = 0.0020%, trace < = Al < = 0.0060%, 0.0020% < = V, 0.0020% < = Ti, 0.0020% < = Nb, trace < = Ca < = 0.0020%, 0.0010% < = B and the balance Fe and inevitable impurities. And the elements also need to simultaneously meet the following conditions: 0.0030% < = S1 < = 0.0060%, and-0.005% < = S2 < = 0. The welding wire has low expansibility, and an obtained welding seam has good low-temperature impact toughness. The thermal expansion coefficient of the alloy welding wire between-180 DEG C and 0 DEG C is (1.0-2.0) * 10 <-6 > m / m / DEG C, the V-shaped impact test result of welding cladding metal of the alloy welding wire at the temperature of-196 DEG C is larger than or equal to 150 Jcm <-2 >, and the alloy welding wire is particularly suitable for manufacturing low-temperature liquefied gas transportation assemblies.

The hollow containers (3, 4) are arranged above a hollow column (2), the hollow column (2) is arranged around the liquefied gas pump (P), and a cable (8) for installing / drawing the liquefied gas pump (P) penetrates through the central part of the containers (3, 4) from the lower part to the upper part. The containers (3, 4) are provided with: lower plate members (5, 6) having cable through-holes (9, 10), through which the cables (8) can pass, in the center thereof; and a cartridge member (12) provided around the cable through-holes (9, 10) in the center of the lower plate members (5, 6) and having a cable insertion hole (13) in the center, the cable insertion hole (13) allowing the cable (8) to be inserted therethrough. The cartridge member (12) is provided with opening diameter adjustment mechanisms (14, 20) that adjust the size of the opening diameter of the cable insertion hole (13).

The application discloses an ultrasonic-temperature double-triggered double-liquid gas phase change contrast agent and a preparation method thereof. The preparation steps comprise the following steps: adding an isotonic buffer solution into a prepared composite phospholipid film, oscillating after ultrasonic dispersion, obtaining a targeted phospholipid vesicle dispersion; then high-pressure double-liquid co-loading is carried out, and the phase change temperature and the ultrasonic response are calibrated; filtering through a filter membrane, collecting the precipitate after centrifugation, adding a protective solution after washing with a PBS buffer solution, and sealing and storing to obtain the double-liquid gas phase change contrast agent. After the contrast agent enters the body, under the ultrasonic double triggering of the physiological temperature and an ultrasonic imaging instrument, the double-liquid gas synchronously phase changes into a gaseous state, drives the contrast agent to rapidly expand from a nano-sized particle into a micron-sized microbubble, realizes ultrasonic enhanced imaging, and has a significant clinical application value.

An electrochemical device is disclosed that includes an ionically conducting electrolyte, a first electrode and a second electrode. The electrodes are in contact with the ionically conducting electrolyte, and a housing encloses the electrodes and the ionically conducting electrolyte. The ionically conducting electrolyte comprises a liquefied gas solvent, an ester solvent, and a salt. The liquefied gas solvent has a vapor pressure above 100 kPa at a temperature of 293.15K. The salt and ester are soluble in the liquefied gas solvent such that the ionically conducting electrolyte is a liquid under pressure.

The utility model discloses a filtering structure of a desulfurization nozzle, which comprises an air inlet pipe and further comprises a dry and wet air washing assembly, the dry and wet air washing assembly comprises a sleeve, an alkaline air washing cushion is mounted in the sleeve, and cotton is arranged on one side of the alkaline air washing cushion; the bottom of the sleeve is in butt joint with an air pipe, one side of the sleeve is provided with an outer box, and the output end of the air pipe is arranged at the bottom of the outer box. According to the utility model, through the arrangement of the dry and wet gas washing assembly, in the use process of the assembly, the physical gas washing assembly, the chemical gas washing assembly and the liquid gas washing assembly are respectively arranged, and the physical gas washing assembly is arranged in the stepped sleeve. And an alkaline washing cushion and cotton arranged in the sleeve respectively realize neutralization and physical filtration of sulfides. A gas pipe in butt joint with the end part of the gas inlet pipe extends into the gas washing tank and is used for realizing liquid gas washing and chemical gas washing, so that the cleaning effect of sulfide is improved.

The utility model relates to the technical field of weighing and lifting devices, and particularly discloses a weighing and lifting device for split charging of liquid gas, which comprises a lifting device arranged in an operation groove reserved on the ground and comprising a lifting platform; the weighing device is used for placing the Dewar tank and weighing the Dewar tank, the weighing device is arranged on the lifting platform, the lifting device is used for adjusting the height of the Dewar tank located on the weighing device, and the weighing device comprises a weighing platform, a plurality of weighing sensors and a plurality of mounting plates; the plurality of mounting plates are arranged at intervals along the length direction of the lifting platform and are connected with the weighing platform through the plurality of weighing sensors. The utility model solves the problems that when the split charging operation is carried out on the liquid gas, the liquid gas often needs to climb to the interface above the Dewar tank by virtue of a ladder, the operation mode is time-consuming and labor-consuming, and the safety accident is easily caused.

The invention discloses a hydraulic S-shaped buckle forming mechanism and a forming method thereof, and relates to the technical field of buckle forming equipment, and the hydraulic S-shaped buckle forming mechanism comprises a buckle wire feeding mechanism and an S-shaped buckle forming mechanism. The thread is secondarily straightened by a straightening wheel set of the thread feeding mechanism, is prevented from retreating by a one-way head, and is precisely conveyed to the forming mechanism by an air cylinder matched with a length adjusting component; and the forming mechanism takes the pressing buckle main seat as a mounting basis, drives a cut-off tool apron, a jackscrew rod and a forming punch through an oil cylinder, and sequentially finishes the confluence of a buckle thread and warp and weft threads, the cutting and pre-pressing into a U shape, the jacking and positioning and the punching into an S-shaped buckle knot. A single pressing buckle assembly is an independent whole, a hydraulic forming and pneumatic back-off mode is adopted, it is guaranteed that buckle knots are compact and firm, self-stress is high, external force influence is small, disassembly is convenient and fast through the liquid-gas characteristic, the pressing buckle assembly is suitable for braided fabric processing, netting gear production and other scenes, and operation stability and product quality are effectively improved.

The present invention relates to a liquefied gas storage tank and a ship including the same, and the liquefied gas storage tank of the present invention is a liquefied gas storage tank storing a cryogenic substance, characterized by comprising: a primary protection wall forming a storage space storing the cryogenic substance, made of a metal material; a primary insulation wall in which a primary plywood and a primary insulation material are sequentially disposed outside the primary protection wall; a secondary protection wall disposed outside the primary insulation wall; and a secondary insulation wall in which a secondary insulation material and a secondary plywood are sequentially stacked and disposed outside the secondary protection wall, the secondary protection wall being composed of a main protection wall provided at an upper portion of each of the secondary insulation walls constituting unit elements and an auxiliary protection wall connecting the adjacent main protection walls to each other, the secondary protection wall being made of a mixed material of a metal and a non-metal, the primary insulation wall having a thickness of 66% to 166% of the secondary insulation wall to reduce a low-temperature burden.

The utility model relates to a rotary air duct combined with a ventilation mast on a liquefied gas carrier, which comprises a base, a support shaft arranged on the base and an air duct mounted outside the support shaft, the support shaft is connected with the air duct through a bearing, and the support shaft is further provided with a driving device which is in transmission connection with the air duct and is used for driving the air duct to rotate relative to the support shaft; the base is arranged on a deck, and the ventilation mast upwards penetrates through the base and the supporting shaft from the lower portion of the deck and extends out of the upper portion of the supporting shaft. The rotary air duct combined with the ventilation mast on the liquefied gas carrier has the advantages that the rotary air duct and the ventilation mast are combined, the rotary air duct and the ventilation mast are arranged in one space at the same time, and the problem that the space for arranging the rotary air duct is limited due to the fact that a large number of devices are arranged on a deck is solved.

1. The name of the design product: flame-retardant explosion-proof sphere. 2. The use of the design product: applied to the container containing flammable and explosive fluid (such as gasoline, diesel, liquefied gas, natural gas, etc.), the sphere has the effect of flame-retardant and explosion suppression. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model relates to the technical field of chemical engineering, in particular to a liquefied gas stratified sampling device which comprises a spherical tank, a closed sampling box, a tank inlet pipeline, a radar liquid level meter director pipe, a sampling pipeline outside the tank, a first branch line, a second branch line and a third branch line, the closed sampling box is arranged outside the spherical tank; the tank inlet pipeline is connected with an inlet of the spherical tank; the radar liquid level meter director tube is directly inserted into the spherical tank through a radar liquid level meter at the top of the spherical tank, and an upper liquid level sampling tube, a middle liquid level sampling tube and a lower liquid level sampling tube are sequentially arranged at the upper position, the middle position and the lower position of the radar liquid level meter director tube. An upper sampling pipeline, a middle sampling pipeline and a lower sampling pipeline are installed in the tank, an operator takes materials in the tank through a closed sampler at the upper point, the middle point and the lower point for real-time test and analysis, and the qualified product leaves a factory.

A ship has a hull, at least one double-shell tank mounted on the hull, having an inner tank storing liquefied gas and an outer tank covering the inner tank, at least one first discharge tower extending upward from the hull, at least one second discharge tower extending upward from the hull independently of the first discharge tower, a first discharge line connecting an upper portion in the inner tank and a tower interior of the first discharge tower, a second discharge line connecting the inner tank and an inter-tank region of the outer tank and a tower interior of the second discharge tower, and a pressure release device provided in the second discharge line, which is closed normally and opened when a pressure of the inter-tank region exceeds a prescribed inter-tank allowable value.

This invention relates to a storage facility (71) for liquefied gases, comprising a support structure (3) and a tank (1), wherein the storage facility (71) includes through structures (12, 13) fixed to the support structure and extending through a top wall and an upper support wall, wherein the through structures (12, 13) include a cylinder (18) and a curved top member (28), the curved top member (28) being fixed to the upper end of the cylinder (18), and at least one pipe extending through the curved top member, wherein the pipe is fixed to the curved top member using a support device (43), and wherein the support device includes: - a support ring (44) welded around the pipe, - a support tube (45) welded to the support ring on one side and to the curved top member on the other side. The invention also relates to ships for transporting cold liquid products, transfer systems for cold liquid products, and methods for loading or unloading ships.

A cryogenic storage system basically includes a first cryogenic storage tank, a second cryogenic storage tank, a fluid transfer line and a cryogenic containment structure. The first cryogenic storage tank has a first predetermined capacity of liquefied gas. The second cryogenic storage tank has a penetration free bottom and a second predetermined capacity of the liquefied gas that is larger than the first predetermined capacity of the first cryogenic storage tank. The fluid transfer line is fluidly connected between the first cryogenic storage tank and the second cryogenic storage tank. The heat exchanger converts liquid exiting the first cryogenic storage tank to a higher pressure gas that is used as a motive force to move liquidized gas out of the second cryogenic storage.

The invention relates to a method for liquefying and purifying carbon dioxide from a gas comprising more than 70% by volume of carbon dioxide, the method comprising the following consecutive steps: a step of filtering the gas, then a step of compressing the gas at a pressure of between 60 bar and 80 bar, then a step of drying the gas, then a step of liquefying the gas, then a step of subcooling the liquefied gas, a step of expanding the liquefied gas, then a step of distilling the fluid so as to isolate the carbon dioxide, then a step of recovering the carbon dioxide in liquid form. The invention also relates to the device implementing the method and to the use thereof.

The utility model discloses a swing stopping bulkhead of a storage tank for a liquefied gas transport ship. The swing stopping bulkhead comprises two webs, a panel, a permeable pore plate and a plurality of horizontal reinforcing rib plates. The two web plates are fixed on the inner wall surface of the storage tank at intervals; the panel is connected between the inner diameter surfaces of the two web plates; the permeable pore plate is fixed on the inner diameter surface of the front part of the panel; the upper part and the lower part of the water-permeable pore plate are respectively provided with an upper inferior-arc-shaped water-permeable pore and a lower inferior-arc-shaped water-permeable pore, and a plurality of rows of circular water-permeable pores are horizontally formed between the upper inferior-arc-shaped water-permeable pore and the lower inferior-arc-shaped water-permeable pore; a plurality of horizontal reinforcing rib plates are fixed between the two web plates and are inserted into a plurality of flat through holes which are horizontally formed in the two sides of the panel in a one-to-one correspondence manner, the front side surfaces of the plurality of horizontal reinforcing rib plates are fixed on the rear surface of the permeable pore plate, and the plurality of horizontal reinforcing rib plates are positioned among the plurality of rows of circular permeable holes in a one-to-one correspondence manner. According to the utility model, the problem of fatigue failure easily caused by stress accumulation of the oscillation stopping panel can be reduced under the condition of reducing periodic impact of oscillation load.

The application discloses a kind of oil cylinder ring seam welding equipment of liquid gas separation, including base, and fixedly installed on the running bin of base upper surface, the inside fixed mounting of the running bin is clamped mechanism and guide cylinder, two symmetric distribution's receiving mechanism is fixedly installed on the upper side of clamped mechanism, two symmetric distribution's polishing mechanism is arranged between two receiving mechanisms, two opposite sides of polishing mechanism are provided with buffer mechanism, and polishing mechanism and buffer mechanism are located between two receiving mechanisms, the welding mechanism is fixedly installed in the inner wall of the running bin, and the welding mechanism is located in the upper side of polishing mechanism, and collection bin is opened in the inside of base;The application, by setting buffer mechanism, can produce the effect of gas damping, to control the rotational speed of polishing roll, avoid vibration of high-speed rotating polishing roll, so as to achieve the effect of good welding effect, small vibration.

A four-lobe cargo tank for transporting and / or storing liquefied gas, the tank having four main lobes, each having a cylinder sector outer shell and a main lobe axis, the four main lobe axes being axially parallel to and centered about a common main central axis, the four main lobes being joined by four web frames to four diagonally corresponding perforated bulkheads directed outward from the main central axis, the tank further comprising first and second end covers, each end cover further comprising four quarter spherical shell sections forming end portions of the cylinder sector outer shell, the quarter spherical shell sections of each of the first and second end covers being joined toward and closed by four diagonally arranged cylindrical 45-degree cut pipe sections, each of the first and second diagonally arranged cylindrical 45-degree cut pipe sections being arranged such that its axis transverses the main axis.

The invention relates to a liquefied gas storage installation (1), said tank (71) comprising a top wall (4) which is locally interrupted to delimit a loading / unloading opening (7), wherein a secondary insulating block (14) comprises a terminal secondary insulating block (34) adjacent to said loading / unloading opening (7), wherein said storage installation comprises at least two fixed supports (26) fixed to said upper support wall (8) and located on either side of said terminal insulating block (34), said secondary thermal barrier comprising a secondary stop plate arranged on said terminal secondary insulating block (34), wherein said secondary stop plate and said secondary cap (29) form a flat support surface for said secondary sealing membrane (11), and wherein said secondary sealing membrane (11) is fixed to said secondary cap (29) of said two fixed supports (26) on the one hand and to said secondary stop plate on the other hand.

To provide a storage tank facility for low temperature liquefied gas in which backflow of gas does not occur in an economizer line.SOLUTION: A cryogenic liquefied gas storage facility includes a tank that stores cryogenic liquefied gas, a liquid feeding line that feeds the cryogenic liquefied gas from the tank, an economizer line that includes a first end communicating with an upper space in the tank at a first position, a second end connected to the liquid feeding line, and a first valve and feeds gas in the tank to the liquid feeding line by an opening operation of the first valve, and a discharge line that includes a first end communicating with the upper space in the tank at a second position different from the first position and a second valve and discharges the gas in the tank to the atmosphere by an opening operation of the second valve.SELECTED DRAWING: Figure 3