445results about "Container filling without pressure" patented technology

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 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 application discloses a land LNG double-loading vehicle arm fine positioning butt joint system, which comprises an LNG double-loading vehicle arm, a stand column camera arranged on the upper part of a support stand column, a liquid-phase camera and a liquid-phase marker arranged on the hard pipe at the end of a liquid-phase arm, a gas-phase camera and a gas-phase marker arranged on the hard pipe at the end of a gas-phase arm, a liquid-phase arm flange arranged at the end of the liquid-phase arm and used for butt joint with a tank car liquid-phase flange, and a gas-phase arm flange arranged at the end of the gas-phase arm and used for butt joint with a tank car gas-phase flange. The application further discloses a land LNG double-loading vehicle arm fine positioning butt joint method. The first virtual flange position is taken as a coarse positioning terminal point, three virtual flanges are arranged along the central axis direction of the tank car liquid-phase flange after the first virtual flange as transition positions for step-by-step fine positioning butt joint, and the step-by-step positioning butt joint realizes multi-step control step-by-step butt joint in the fine positioning process, thereby improving the butt joint precision.

The utility model discloses a liquefied air energy storage system which comprises a molecular sieve water separator and a molecular sieve adsorption tower, a separator air output pipe is connected with a top gas connecting pipe of the molecular sieve adsorption tower, and a bottom gas connecting pipe of the molecular sieve adsorption tower is connected with a cold box front compressor unit. The cold box front compressor unit is communicated with an air pipeline in the cold box, and an outlet of the air pipeline in the cold box is communicated with a first liquefied air storage tank through a first liquefied air output pipe with a first throttling valve; the output end of a liquid air pressure pump on a first liquefied air storage tank output pipe of the first liquefied air storage tank is communicated with the air input end of the expansion unit, the air output end of the expansion unit is provided with a hot blowing conveying pipe and a cold blowing conveying pipe, and the hot blowing conveying pipe is communicated with a bottom gas connecting pipe through a first heater and an electric heater; and the output end of the cold blowing gas conveying pipe is connected to the output end of the electric heater output pipe. The device has the advantages of simple structure, low energy consumption and full utilization of heat energy.

The utility model relates to the technical field of power emission, in particular to a phase change acting system. The phase change acting system comprises a phase change pipe, the phase change pipe is provided with a pressure relief end and a filling end, a piston for controlling a pressure relief opening of the pressure relief end of the phase change pipe to be opened and closed is arranged in the phase change pipe, and the filling end is provided with a liquid carbon dioxide filling valve and a valve closing air cylinder for providing force needed by the piston for closing the pressure relief opening. The piston can open and close the pressure relief opening under the action of the pressure difference between the interior of the phase change pipe and the interior of the valve closing air cylinder, the valve closing air cylinder is connected with an air filling valve, the air filling valve is connected with an air source through an air inflation pipe, and the liquid carbon dioxide filling valve is connected with a liquid carbon dioxide storage tank and a liquid carbon dioxide filling machine through a liquid filling pipe. The liquid carbon dioxide and the compressed air can be filled without assembling and debugging again, so that continuous and rapid filling is realized, the phase change pipe can be ensured to do work outwards rapidly and uninterruptedly, and the overall operation efficiency is improved.

The invention discloses an LNG (Liquefied Natural Gas) cold energy gradient utilization system coupled with seawater desalination and liquefied air energy storage. A seawater desalination module of the system carries out seawater desalination by using cold energy of liquefied natural gas, and a liquefied air energy storage module carries out air compression and liquefaction in a power off-peak period and releases energy to generate power in a power peak period; the system can switch a seawater desalination priority mode, an energy storage peak regulation mode and a composite energy supply mode. According to the system, a double-loop structure is adopted, liquefied natural gas cold energy, solar heat energy, electric energy and environmental resources are fully coupled, multi-energy complementation, gradient utilization and combined cooling heating and power are achieved, flexible switching of three cooperative operation modes is achieved, the operation state of the system can be adjusted according to the external load requirement, the resource utilization efficiency and the operation economy are improved, and the energy consumption is reduced. The modular design has good expandability and engineering adaptability, has the characteristics of being green, energy-saving, environment-friendly, high in safety and stable in operation, and is suitable for guaranteeing regional water resources and balancing power generation fluctuation of unstable green energy.

The utility model belongs to the technical field of liquid hydrogen stations, and particularly relates to a liquid hydrogen station BOG recycling system which comprises a liquid hydrogen tank car, a liquid hydrogen storage tank, a hydrogen liquefying device and a hydrogen recycling device. A gas outlet of the liquid hydrogen storage tank is respectively connected with the hydrogen liquefaction device and the hydrogen recovery device through a BOG gas phase recovery pipeline, and a liquid outlet of the hydrogen liquefaction device is connected with a liquid inlet of the liquid hydrogen storage tank. According to the system and the control scheme, BOG generated in the operation process of the liquid hydrogen filling station is reasonably recovered, complete recovery and efficient storage of BOG hydrogen are achieved, the system and the control scheme are high in automation degree and good in applicability, the on-site operation time of operation personnel is shortened, and the production efficiency is improved. And the overpressure emission or direct emission of hazardous gases such as BOG (boil-off gas) in the transportation process of the liquid hydrogen tank car is reduced.

The utility model discloses a hydrogen storage and supply device and a hydrogen fuel cell heat and power cogeneration system, and relates to the technical field of fuel cells. The hydrogen storage and supply device realizes normal-temperature and normal-pressure storage of hydrogen on the basis of a liquid organic matter hydrogen storage technology, and the principle is that hydrogen storage is realized by virtue of reversible reaction and hydrogenation reaction of unsaturated liquid organic matters such as olefin, alkyne or aromatic hydrocarbon and hydrogen, and hydrogen release is realized by virtue of dehydrogenation reaction. According to the liquid organic matter hydrogen storage technology, the hydrogen storage density is 5%-10%, and the hydrogen storage amount is large; and the hydrogen storage carrier is a liquid organic matter, normal-temperature and normal-pressure transportation can be achieved, convenience and safety are achieved, the requirement for the hydrogen liquid tank is low, and hydrogen leakage is basically avoided during transportation. And during dehydrogenation reaction, the temperature required by hydrogen desorption is low, the energy consumption is low, the hydrogen desorption rate is adjustable, and the hydrogen desorption device can be adapted to various hydrogen fuel cells. The hydrogen fuel cell heat and power cogeneration system collects and utilizes the lost heat of the cell, so that the comprehensive utilization rate of the hydrogen fuel cell is improved.

The invention relates to a storage cryostat (2) for liquid helium (7), suitable for transferring liquid helium (7) from the storage cryostat (2) into an application cryostat (3), wherein the storage cryostat (2) comprises: - a vacuum-insulated helium vessel (6) for liquid helium (7), the helium vessel (6) having a vertical height HHB that can be filled with liquid helium (7), - a transfer line (4) for liquid helium (7), having an inlet opening (20) which opens into a lower region of the helium vessel (6), in particular into a lower fifth of the helium vessel (6), and - a convection-suppression system (9) which is arranged within the helium vessel (6) and impedes vertical convection of liquid helium (7) in the helium vessel (6), characterised in that the convection-suppression system (9) is formed in the helium vessel (6) over a height interval (IKS) with a vertical height HKS, where HKS ≥ 0.50 × HHB, and in that the convection-suppression system (9) impedes the vertical convection of liquid helium (7) in the helium vessel (6) over the region of the height interval (IKS) of the convection-suppression system (9). The invention provides a storage cryostat that enables simple and rapid transfer of liquid helium from the storage cryostat into the application cryostat, with minimised helium losses.

A system and method for high rate liquid hydrogen tank filling is provided. The flexible, pump-based filling system can achieve high fill rate of liquid hydrogen in excess of 100 kg per minute and accommodate maximum delivery pressures. The present system and method further includes recovery and re-liquefaction of displaced and flash generated tank vapors.

The integrated hybrid system for managing the production, flow, consumption and storage of energy is characterised in that it comprises a cryogenic liquefied air energy storage (7), to which, either upstream and / or downstream of the compressor, an system for transporting oxygen (D) obtained from the electrolyzer (11) is connected, while an system supplying heat (B) obtained during combustion of gas in the trigeneration unit (9) is incorporated in the liquid air and / or oxygen expansion station of the cryogenic liquid air energy storage (LAES) (7), wherein all energy processing and storage units are incorporated in the control and supervision system, collecting data in real time, monitoring the production, consumption and demand for electrical energy, and intelligently controlling energy flow between generation sources, powered devices and energy storage units.

A coupling system for liquefied natural gas re-gasification and liquid air energy storage. The coupling system comprises a liquefied natural gas re-gasification system and a liquid air energy storage system. The liquefied natural gas re-gasification system comprises: a heat exchanger-natural gas (HX-NG) connected to a liquefied natural gas re-gasification path. The liquid air energy storage system comprises: a heat exchanger-charge (HX-C) connected to a main gas liquefaction path, a heat exchanger-discharge (HX-DC) connected to a liquefied main gas re-gasification path, and a cold dewar (CD), wherein a first heat exchange cycle where cold energy exchange is performed with a first heat exchange medium is formed between the heat exchanger-natural gas and the heat exchanger-charge; and a second heat exchange cycle where cold energy exchange is performed with a second heat exchange medium is formed among the heat exchanger-charge, the cold dewar and the heat exchanger-discharge. In the first heat exchange cycle, a hot end of the heat exchanger-natural gas is connected to a hot end of the heat exchanger-charge, and a cold end of the heat exchanger-natural gas is connected to a cold end of the heat exchanger-charge; and in the second heat exchange cycle, hot ends of the heat exchanger-charge, the cold dewar and the heat exchanger-discharge are connected, and cold ends of the heat exchanger-charge, the cold dewar and the heat exchanger-discharge are connected. In the present invention, regardless of whether the liquid air energy storage system is in a charging working state, a standing working state or a discharging working state, effective coupling utilization of cold energy and heat energy between the liquid air energy storage system and the liquefied natural gas re-gasification system can be realized, improving the effective coupling utilization rate of cold energy and heat energy between the systems.

Manual and automated methods of pre-charging an empty or partially empty insulated container with C02 snow are provided. A first location such as a charging location charges C02 liquid into a container to create a pre-charged container with C02 snow. The charging location prepares the pre-charged container for delivery to a second location, either by itself, or through a third party. The second location may be a clinical site, which upon receipt of the pre-charged container, loads a perishable item such as a biological sample into the pre-charged container. A user receives the pre-charged container with perishable item and removes the perishable item from the pre-charger container for testing (e.g., biological testing). Depending on the level of depletion of the C02 snow in the pre-charged container, the user returns the depleted container to the first location or the intermediate location.

The invention relates to a zero-loss methane propellant supercooling filling system and method, and the system comprises a liquid nitrogen supply unit, a methane supply unit, a supercooling methane storage tank, a heat exchange pipeline unit and a temperature control unit; the heat exchange pipeline unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a separation and recovery module; the liquid nitrogen supply unit is connected with the cold end of the first heat exchanger. The cold ends of the first heat exchanger, the second heat exchanger and the third heat exchanger are sequentially connected in series. Methane output by the methane supply unit exchanges heat with the third heat exchanger and then is input into the supercooled methane storage tank; methane output by the exhaust end of the supercooled methane storage tank exchanges heat with the second heat exchanger and then is input into the separation and recovery module; and the separation and recovery module is connected with the supercooled methane storage tank and the methane supply unit and is used for converging the recovered methane into the supercooled methane storage tank and / or returning the recovered methane to the methane supply unit. According to the method, freezing in methane supercooling filling is effectively avoided, and lossless filling is achieved.

Disclosed herein is a control system for a reliquefaction system for ships, in which boil-off gas generated from liquefied gas in an onboard storage tank is compressed by a compressor and the compressed boil-off gas is cooled and reliquefied through a heat exchanger. The control system includes: a reliquefaction line connecting the compressor to the storage tank; a control valve disposed downstream of the heat exchanger on the reliquefaction line to adjust a flow rate of boil-off gas flowing through the reliquefaction line; a flow rate regulator configured to control a degree of opening of the control valve; and a load controller configured to send a signal for adjusting a load of the reliquefaction system to the flow rate regulator, wherein, in the event of changes in load of the reliquefaction system, the load controller sends a predetermined set point indicative of a boil-off gas flow rate at a corresponding load to the flow rate regulator to adjust the load of the reliquefaction system.

The novel liquid nitrogen box comprises a box body, the upper end of the box body is of an opening structure, a box cover is arranged at the upper end of the box body, the box cover is connected with the box body through a buckle, the upper ends of the side walls of the front end and the rear end of the box body are each provided with three support containing grooves, each support containing groove is of an arc-shaped structure, and three supports are arranged in the box body. The supports are distributed at equal intervals, arc-shaped clamping rods are fixedly arranged above the supports, one ends of the arc-shaped clamping rods extend out of the box body through the support containing grooves, the upper ends of the arc-shaped clamping rods make contact with the box cover, a supporting plate is fixedly arranged below the position between the supports, and a plurality of fumigation holes are formed in the supporting plate. The support is fixedly provided with two placing plates above the supporting plate, the placing plates are distributed at equal intervals, and the structure solves the problems that the test tube support is easy to shake and the introduction amount of liquid nitrogen is difficult to grasp.

The utility model discloses an inflating device for an O-shaped inflating bag with double inflating ports. The inflating device comprises a shell and two inflating components, the inflation assembly comprises an inflation pipe arranged at the upper end of the shell, two pairs of inflation pressing wheels and a pair of feeding pressing wheels, wherein the two pairs of inflation pressing wheels and the pair of feeding pressing wheels are sequentially arranged in the axial direction of the inflation pipe. A plurality of inflation holes are formed in the upper end of the inflation pipe and located between the two pairs of inflation pressing wheels. A cutting knife is arranged between the feeding pressing wheel and the inflation pressing wheel. A lateral air groove is formed in the side surface of the inflating pipe; one end of the cutting knife is located in the lateral air groove, and the other end of the cutting knife is arranged at the upper end of the shell. The two inflation assemblies inflate the O-shaped inflation bag with two independent inflation openings at the same time, the independent feeding pressing wheels are arranged in the follow-up direction of the two pairs of inflation pressing wheels and used for traction conveying, meanwhile, the cutting knife is arranged between the feeding pressing wheels and the inflation pressing wheels, and it is guaranteed that two packaging edges of the O-shaped inflation bag are evenly stressed and synchronously fed.

The invention discloses liquid fuel filling equipment for ship green energy filling, and relates to the technical field of liquid fuel filling equipment. The device comprises a fixing frame, a liquid storage container is fixedly connected to the inner wall of the fixing frame, an oil pipe is fixedly connected to the top of the liquid storage container, and a filling head is fixedly connected to the end, away from the liquid storage container, of the oil pipe. Through cooperation of the telescopic plate, an electric push rod, a fixing block, a first supporting block, a second supporting block, an arc block, a bolt and a protective barrel, the problem that an oil pipe and a filling head fall into a river due to errors of a worker and a user when the worker and the user manually take and receive the oil pipe and the filling head is avoided; and meanwhile, the second supporting block moves to drive the protection barrel to move, so that the protection barrel can protect the oil pipe hung on the river, and the problem that the oil pipe shakes due to sudden strong wind, and consequently connection between the filling head and the filling pipe of the ship is not stable is solved.

The LNG metering filling and loading system comprises natural gas inlet pipelines, a gas filling main pipeline and a diffusion pipeline, the multiple natural gas inlet pipelines are connected with the gas filling main pipeline, and the diffusion pipeline is connected with the gas filling main pipeline through a safety valve; a gas filling gun is arranged at the tail end of the gas filling main pipeline, the flow coefficients of the gas filling gun and a gas filling snap valve in the gas filling main pipeline are selected to be more than 3, and the drift diameter of an internal pipeline in the gas filling main pipeline is phi 15-phi 20; according to the scheme, through special model selection of the gas filling gun and the main pipeline, the outward output flow of the whole pipeline in unit time can be increased, large-flow output is guaranteed, and therefore when gas filling is conducted on multiple vehicles, the gas filling time can be shortened, and the queuing waiting time can be shortened.

The utility model discloses a kind of liquid chlorine filling anti-leakage intelligent connecting devices, including liquid chlorine storage tank, the top of the liquid chlorine storage tank is equipped with connecting pipe, fixed ring is sleeved on the connecting pipe, the connecting pipe is equipped with cover plate, locking mechanism is installed on the side of the cover plate, filling mechanism is installed on the cover plate, first locking sleeve is sleeved on the filling mechanism, second locking sleeve is installed in the first locking sleeve, the second locking sleeve is fixed with feed pipe. The utility model is through the buckle type design of locking mechanism and fixed ring, realize the even locking and quick disassembly of cover plate and connecting pipe, effectively avoid the uneven stress and wear problem of traditional sealing structure;Filling mechanism is matched with double locking sleeve and shut-off valve, forms multilayer sealing system, in combination with the sealing seat and sealing ring of rubber material, significantly improve the anti-leakage performance under high pressure.

This invention discloses a pressure control device, method, and system for the coexistence of different types of full-containment tanks. It includes: multiple full-containment tanks, each equipped with a first pressure sensor, and each full-containment tank connected to an input pipe via a valve group; each full-containment tank is connected to a flare and an output pipe, with a first control valve between the flare and the full-containment tank; the first control valve and valve group of each full-containment tank are respectively connected to a controller, which controls the opening and closing of the first control valve and valve group; two full-containment tanks with different design pressures share a single output pipe, and a pressure protection system is installed on the output pipe between the two full-containment tanks. The pressure protection system includes at least one first shut-off valve and a second pressure sensor connected to the controller; in response to a trigger signal from the second pressure sensor, the controller controls the opening and closing of the first shut-off valve. This allows for the simultaneous operation of full-containment tanks with different design pressures while ensuring the safe and stable operation of the station.

The invention discloses a liquid oxygen circulation supercooling system, and relates to the technical field of liquid oxygen storage management, liquid oxygen is stored in a liquid oxygen storage tank, the liquid oxygen enters a self-pressurization vaporizer from a vaporization liquid inlet pipe to be vaporized, oxygen generated by vaporization enters the liquid oxygen storage tank from a vaporization steam exhaust pipe, so that the pressure in the liquid oxygen storage tank is increased, and the liquid oxygen is discharged into a pipe needing to be cooled after being increased; the supercooling process is realized when the liquid oxygen in the pipe needing to be cooled flows through the cooler, and the liquid oxygen flows back to the liquid oxygen storage tank again after being supercooled; the device is applied before a launching task starts, liquid oxygen in the liquid oxygen storage tank is supercooled through continuous liquid oxygen circulating flow, compared with supercooling when liquid oxygen is injected into a rocket, supercooling is conducted in advance in the storage stage, injection peak flow does not need to be matched, the size of the device is smaller, and the manufacturing cost is lower.

To provide a liquefaction hydrogen supply facility and a liquefaction hydrogen supply method which can quickly supply liquefaction hydrogen to a liquefaction hydrogen tank provided on a vehicle or the like.SOLUTION: A liquefaction hydrogen supply facility 1 includes: a storage tank 10 in which liquefaction hydrogen can be stored; a dispenser 31 connected to the storage tank 10; a common line 41 for connecting the storage tank 10 and the dispenser 31; and a filling line 42 having a coupler 52 connected to the dispenser 31 and capable of being connected to a liquefaction hydrogen supply target. The common line 42 includes: a first measuring instrument for measuring a flow rate, a density, and a temperature of a fluid circulating the common line 41; and a first vent line 46 provided on a downstream of the first measuring instrument. The dispenser 31 includes a second measuring instrument for measuring a flow rate and a density of a fluid circulating in the dispenser 31.SELECTED DRAWING: Figure 1

The invention relates in particular to a device (10) for dispensing a liquefied fluid (F1) into a container (12). The device (10) has a cooling container (14) for receiving a cooling medium (K1). The apparatus (10) has a liquefying device (26) which is arranged in the cooling vessel (14) for cooling and liquefying a gaseous fluid. The apparatus (10) has a storage container (32) which is connected to the liquefying device (26) for receiving the liquefied fluid (F1) from the liquefying device (26) and which is arranged in the cooling container (14) for cooling the liquefied fluid (F1). The apparatus (10) has a dispensing device (38) for dispensing the liquefied fluid (F1) into the container (12), where the dispensing device (38) is connected to the storage container (32) for receiving the liquefied fluid (F1) from the storage container (32).

The invention relates, inter alia, to a device (10) for dispensing a liquefied fluid (F1) into a container (12). The device (10) has a cooling vessel (14) for receiving a cooling medium (K1). The device (10) has a liquefaction unit (26) arranged in the cooling vessel (14) for cooling and liquefying a gaseous fluid. The device (10) has a storage container (32) connected to the liquefaction unit (26) for receiving the liquefied fluid (F1) from the liquefaction unit (26) and arranged in the cooling vessel (14) for cooling the liquefied fluid (F1). The device (10) has a metering device (38) for dispensing the liquefied fluid (F1) into the container (12), wherein the metering device (38) is connected to the storage container (32) for receiving the liquefied fluid (F1) from the storage container (32).

A cryogenic storage system comprising a cryogenic container for storing hydrogen, with an inner tank (1) and an outer container (2), wherein at least one cryogenic pump (21) is arranged in the inner tank (1) of the cryogenic container, wherein the cryogenic pump (21) delivers liquid and / or gaseous hydrogen in one or more stages via a withdrawal line (27) to a consumer (5) at a higher pressure than the pressure in the inner tank (1), wherein the inner tank (1) can be refueled via a refueling interface (14), wherein the refueling takes place at least section by section via the withdrawal line (27), wherein the refueling takes place via a spring-loaded check valve (25) or a changeover valve (26) into the inner tank (1).

Method for filling a plurality of cryogenic liquid receiving tanks, using a plurality of mobile source tanks, the method comprising the following steps: transferring a first quantity of cryogenic liquid from a first source tank to a first receiving tank, and simultaneous transfer of a first quantity of vaporization gas present in the first receiving tank to the first source tank; checking at least the distribution condition that the pressure in the first source tank is lower than a predetermined pressure threshold; and if the distribution condition is met, transfer of a second quantity of cryogenic liquid from the first source tank to a second receiving tank, and simultaneous transfer of a second quantity of vaporization gas present in the second receiving tank to the first source tank.

The utility model relates to the technical field of automotive LNG (Liquefied Natural Gas) supply systems, in particular to a gas source control distributor for an automotive LNG supply system, which comprises an outer pipe, a gas leakage detection alarm arranged in the outer pipe, an inner pipe arranged in the outer pipe, a through hole formed in the side wall of the inner pipe, a sealing ring arranged in the through hole, and a gas outlet arranged in the inner pipe. A branch pipe component is arranged on the side wall of the outer pipe and comprises a frame body, the frame body is fixedly installed on the outer side wall of the outer pipe, a branch pipe is movably connected to the interior of the frame body in a penetrating mode, one end of the branch pipe penetrates through the side wall of the outer pipe and the sealing ring to extend into the inner pipe, and a baffle ring is fixedly connected to the outer wall of the branch pipe. When the inner pipe is damaged, only the damaged inner pipe needs to be replaced independently, the maintenance cost is saved, the gas leakage detection alarm is used for detecting the outer pipe and the inner pipe, whether the inner pipe leaks or not can be found in time, and the use safety is improved.

The invention discloses a skid-mounted comprehensive treatment platform for liquid ammonia filling and ammonia gas recovery of a ship. The platform comprises a liquid ammonia filling pry, an ammonia refrigeration pry, an ammonia gas recovery pry and a liquid ammonia tank car, wherein the liquid ammonia filling pry comprises a first liquid ammonia filling module, a second liquid ammonia filling module and a control module; the first liquid ammonia filling module is composed of a first pressure reducing valve, an ammonia cooler, an ammonia circulating refrigerating unit and a second pressure reducing valve; the second liquid ammonia filling module is composed of a third valve group and a first ammonia liquid pump; the input end of a first absorption tower group in the ammonia gas recovery pry is connected with a liquid ammonia tank car (or a ship fuel tank) through a fan, one path of the output end of the first absorption tower group is connected with a second absorption tower group, and one path of the output end of the second absorption tower group is connected with the bottom of an ammonia adsorption tank; the other path of the output end is connected with the ammonia gas recovery passage through a third ammonia water pump; meanwhile, the second absorption tower group is also connected with a desalted water tank through a spraying water supply pump; the technical problems that in the liquid ammonia filling process, ammonia gas is wasted, an effective ammonia gas leakage treatment system is lacked, and the ammonia gas absorption efficiency is low are solved.