52 results about "Inerting system" patented technology

The invention belongs to the technical field of aircraft fuel tank inerting, and particularly relates to a method for calculating the shedding rate of a catalyst coating of an ozone converter in single flight. Comprising the following steps: S1, acquiring the mass M of a catalyst coating of the ozone converter; s2, acquiring flight profile data, wherein the flight profile data comprises a relationship H (t) between the flight height H and time t of the aircraft, time h required by one flight cycle of the aircraft, and time t1 and t2 for starting working and closing of an inerting system; s3, the relation m (H) between the mass m of dust contained in unit volume of entrained air in the entrained air of the inerting system and the flight height H is obtained; s4, the air entraining flow Q of the inerting system is obtained; s5, obtaining a guarantee value F and a dust holding capacity M1 of the minimum replacement interval of the filter; and S6, calculating the single flight shedding rate mu of the catalyst coating of the ozone converter.

The invention discloses a graded inerting device and method based on dynamic risk discriminating.The device comprises a continuous inerting system, a dust removal system and an efficient inerting system, the dust removal system comprises a dust removal main pipeline and a dust remover which are connected, the continuous inerting system comprises an inerting dust bin and feeding equipment, and the feeding equipment is connected with the dust removal main pipeline; the efficient inerting system comprises an efficient inerting powder tank; and the efficient inerting powder tank is connected with a dust remover. According to the method, the continuous inerting system and the efficient inerting system are used in a combined mode, the explosion risk of the main dust removal pipeline can be reduced through the continuous inerting system under the condition that the dust remover does not break down, and meanwhile the combustible dust explosion risk caused by the fault of the dust remover can be effectively controlled; the efficient inerting system is only triggered under the abnormal condition that the dust concentration of the dust remover is abnormally increased or explosion is generated, so that the energy consumption of fixed threshold inerting and the consumption of an inerting medium are effectively reduced, and more efficient inerting is realized.

The invention belongs to the electromechanical technology of helicopters, and relates to a fuel tank inerting system based on engine tail gas and a control method of the fuel tank inerting system. One end of a pipeline blows air from an engine exhaust nozzle, and the other end of the pipeline is connected with upper air of a fuel tank; a fan, a pressure safety valve, a temperature adjusting unit, a three-way catalyst, an oxygen monitoring unit, a cooling unit and a temperature monitoring unit are sequentially arranged in the pipeline; a fuel tank oxygen sensor is arranged at the upper part of the fuel tank; the fuel tank is further connected with the outside atmosphere through a ventilation pipeline.

A system (22) is disclosed having an inerting device (44) that receives an intake air stream and separates it into nitrogen-enriched air (NEA) and oxygen-enriched air (OEA). The inerting system also has an oxygen concentration sensor (46) and a controller (48) connected to the oxygen concentration sensor (46). The controller (48) adjusts operation of the inerting system (22) during use based at least in part on feedback received from the oxygen concentration sensor (46).

The application discloses an ozone decomposition catalyst with catalytic performance and water resistance, and a preparation method and application thereof, and belongs to the field of gas purification and treatment in the field of energy and environment. The ozone decomposition catalyst comprises a carrier, an active component, a catalytic component and a reinforcing component; the active component and the catalytic component are loaded on the carrier to form a core layer; and the reinforcing component is wrapped around the periphery of the core layer to form a reinforcing layer. The ozone decomposition catalyst adopts a configuration of "reinforcing layer @ catalytic component" or "reinforcing layer @ catalytic component @ metal honeycomb substrate", so as to ensure the ozone catalytic decomposition performance and water resistance of the catalyst under high flux and high humidity conditions. The metal wall ozone decomposition catalyst with the configuration of "reinforcing layer @ catalytic component @ metal honeycomb substrate" is especially suitable for the ozone decomposition catalyst required in an ozone converter of an aircraft cabin control system and a fuel tank inerting system.

Disclosed are a method and a system for reducing thermal runaway in a battery pack (1), the method comprising the steps of: detecting a temperature inside the battery pack (1); when the detected temperature is higher than a predetermined temperature, a gas containing nitrogen gas and oxygen gas is injected into the battery pack (1), the volume of the oxygen gas being less than 10%, and the oxygen gas is removed from the inside of the battery pack (1). The system comprises a temperature sensor (2); the inerting system (4) is used for injecting gas containing nitrogen and oxygen into the battery pack (1) under the condition that the temperature detected by the temperature sensor (2) is higher than a preset temperature, and the volume of the oxygen is smaller than 10%; and an outlet duct (7) through which oxygen is removed from the battery pack (1) when the temperature detected by the temperature sensor (2) is higher than a predetermined temperature.

This invention relates to an air preparation system and an aircraft including such a system. The air preparation system includes an engine bleed air branch, a cabin exhaust branch, a compressor, a one-way valve, and a main heat exchanger. The engine bleed air branch draws air from the bleed air manifold to supply the compressor or the one-way valve, and is equipped with an air preparation system pressure regulating valve. The cabin exhaust branch draws air from the cabin exhaust area to supply the compressor or the one-way valve, and is equipped with a cabin exhaust supply valve. The one-way valve is arranged in parallel with the compressor. The main heat exchanger is located downstream of the compressor and the one-way valve and is in fluid communication with them. The main heat exchanger is used to regulate the temperature of the air from the compressor or the one-way valve before supplying it to the inerting system. According to the above technical solution, this invention can achieve the following beneficial technical effects: reducing engine bleed air consumption, thereby reducing aircraft fuel consumption.

A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate / coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate / coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone. The air filtration system may comprise a fuel tank inerting system (FTIS) filter assembly. The FTIS filter assembly may include a binderless media (no binder) suitable for use in high temperatures. The FTIS filter assembly includes a catalytic converter configured to adsorb one or more VOCs.

The invention provides an underwater lithium ion power battery toxic and harmful gas treatment system and method.The system comprises an inert gas filling system, an oxygen elimination and disinfection system and an inerting system control system, the inert gas filling system comprises a nitrogen cylinder and an inert gas filling pipeline, and the inert gas filling pipeline is communicated with the nitrogen cylinder and a storage battery chamber; nitrogen is conveyed to the storage battery chamber; the oxygen-eliminating and disinfecting system comprises an oxygen-eliminating and disinfecting pipeline, and two ends of the oxygen-eliminating and disinfecting pipeline are respectively communicated with the storage battery chamber to form closed circulation; the inerting system control system controls on-off and flow of an inert gas filling pipeline and controls starting and stopping of an oxygen elimination and disinfection program, the oxygen concentration can be controlled, harmful and toxic gas can be removed in time, and explosion accidents caused by gas leakage due to thermal runaway in a storage battery chamber are avoided.

The utility model discloses a surge tank structure of a marine methanol supply pipeline, which comprises a methanol supply pipeline and a nitrogen inerting system, the methanol supply pipeline is provided with a surge tank, and the top of the surge tank is provided with a gas inlet connected with the nitrogen inerting system through an electronic ball valve. A pressure sensor in signal connection with the electronic ball valve is installed on a pipeline between the electronic ball valve and the gas inlet, a dynamic pressure adjusting mechanism is constructed, when the pressure drops to a preset value, nitrogen is supplemented into the surge tank in time through a nitrogen inerting system, and unsmooth methanol fuel supply caused by sudden pressure drop is avoided; a safety valve used for exhausting is further installed at the top of the surge tank, when the pressure in the surge tank is too high, the safety valve is automatically opened to exhaust redundant gas, the situation that a methanol supply pipeline is impacted due to the too high pressure is avoided, the methanol leakage risk is reduced, meanwhile, the service life of the pipeline and related equipment is prolonged, and the operation and maintenance cost of the ship is reduced.

An aircraft fuel system includes a first fuel storage tank arranged to store a first fuel, a second fuel storage tank arranged to store a reduced oxygen fuel, and a fuel tank inerting system arranged to provide a reduced oxygen gas through a fuel contained within the second fuel storage tank to generate the reduced oxygen fuel within the second fuel storage tank. The fuel tank inerting system may include a fuel tank sparging system to inject the reduced oxygen gas directly into the fuel contained within the second fuel storage tank to generate the reduced oxygen fuel.

The present application relates to the technical field of aviation system, more particularly to an aviation engine integrated with an inerting system and an aviation aircraft. It solves the problem that the traditional on-board nitrogen generation system technology needs to use the engine bleed air, thereby affecting the engine performance. The aviation engine comprises a compressor, a rotating shaft, a gas turbine, a power turbine, a generator, a compressor air splitter, an anode tail gas splitter, a combustion chamber, an anode tail gas blower, a reforming reactor, a fuel inerting system, a fuel pump, an electric propulsion system and a cathode tail gas splitter, wherein the fuel inerting system comprises a solid oxide fuel cell, a reformer heat exchange channel, a first heat exchanger, a second heat exchanger and an oil tank. It reduces the influence of the inerting system on the weight of the aircraft, avoids the additional demand of the nitrogen generation system on the engine bleed air, and also meets the demand for electric energy under the trend of aircraft electrification, thereby ensuring the normal working performance of the engine.

The invention belongs to the technical field of civil aircraft inerting system air filters, and discloses a two-stage filtering air filter with an automatic drain valve, which comprises a shell with a cylindrical structure, a gas inlet and a gas outlet which are arranged on two sides of the top of the shell, the gas inlet is communicated with an outer ring channel in the shell, and the gas outlet is communicated with a central circle in the shell. The outer ring channel in the shell is separated from the central circle through a cylindrical surface; two layers of cylindrical coaxially-sleeved filtering structures are arranged on the lower portion, in the shell, of the outer ring way and the center circle, and a drainage valve assembly is arranged below the filtering structures. The double filter elements are connected in series, the installation space is saved, the product weight is reduced, the spring is arranged to press the hydrophobic filter element and eject the end cover assembly, and the end cover assembly is convenient to disassemble.

The invention provides a ship fuel filling device and a ship fuel filling method, the filling device comprises a vehicle body, a filling system and an inerting system, and a sealing cavity is formed in the vehicle body. And the filling system is arranged in the sealing cavity. The filling system comprises a liquid-state filling pipeline, a gas-state circulating pipeline and a release valve. The first end of the liquid filling pipeline forms a liquid inlet connector, and the second end of the liquid filling pipeline forms a liquid outlet connector. The first end of the gas-state circulating pipeline forms a gas inlet connector, and the second end of the gas-state circulating pipeline forms a gas outlet connector. And the release valve is arranged on the liquid filling pipeline. The inerting system is arranged in the vehicle body and comprises a nitrogen inlet, and the nitrogen inlet is formed in the vehicle body. According to the ship fuel filling device, the filling system and the inerting system are both integrated on the vehicle body, the filling device can be conveniently moved to the filling position to conduct ship fuel filling operation, and the deployment efficiency is high.

The application provides a system for processing excess BOG of an LNG ship, and belongs to the technical field of ships.The system comprises a BOG supply system, an excess BOG utilization system, a flue gas energy storage system, a flue gas energy release system and an inerting system.Based on the complex sailing conditions of a ship, when the LNG ship sails at low load, sails in a maneuvering mode or is anchored, the excess BOG generated in the LNG liquid cargo tank is sent into a boiler for combustion, and then the energy of the excess BOG is converted into the pressure energy of flue gas and stored through a series of devices, so that the problem of waste of the BOG in the excess state is effectively solved; when the ship sails at high load or is unloaded at a discharge port, the energy of the flue gas is released, so that the energy of the BOG is reused.In addition, the stored flue gas can also be used for inerting of low-temperature pipelines and equipment at normal temperature or at a temperature of 0 DEG C to -60 DEG C, so that the inerting cost of the ship is reduced.

The invention discloses an aircraft fuel tank composite inerting system and method based on liquid hydrogen cold energy gradient utilization, and belongs to the technical field of aviation safety. The system comprises a liquid hydrogen supply module, a membrane method nitrogen-rich gas generation module and a fuel tank active cooling module; the membrane method nitrogen-rich gas generation module comprises an electric compressor, a first micro-channel heat exchanger and an air separation membrane assembly; the electric compressor, a hot side channel of the first micro-channel heat exchanger and the air separation membrane assembly are sequentially connected, and a nitrogen-rich gas outlet of the air separation membrane assembly is connected with an oil tank of an airplane. The oil tank active cooling module comprises a second micro-channel heat exchanger and a cold plate; the cold plate is arranged in the oil tank; a hot side channel of the second micro-channel heat exchanger is connected with the cold plate to form a cooling medium circulation loop; the liquid hydrogen supply module, a cold side channel of the first micro-channel heat exchanger and a cold side channel of the second micro-channel heat exchanger are sequentially connected. The invention has the advantages of high energy efficiency, safety, reliability, strong environmental adaptability and the like.

A vortex tube assembly for an aircraft enclosure inerting system has a plenum chamber and a swirl generator which has an inlet passage that allows air in the plenum chamber to enter a vortex chamber whereupon the air can be centrifugally separated into nitrogen enriched air (NEA) and oxygen enriched air (OEA). A throttle pin is positioned within the inlet passage, an outer surface of the throttle pin and an inner surface of the inlet passage co-operatively defining a flow path for air to enter the vortex chamber from the plenum chamber. The throttle pin is movable between a restrictive position and a permissive position, with the flow path being more constricted when the throttle pin is in the restrictive position than when the throttle pin is in the permissive position. The throttle pin is biased to the permissive position and movable to the restrictive position against this bias.

An inerting system 22 has an inerting apparatus 44 which receives an inlet air flow and separates it into nitrogen enriched air (NEA) and oxygen enriched air (OEA). The inerting system also has an oxy

A vortex tube assembly 42 for an aircraft enclosure inerting system (22, fig. 1) has a plenum chamber 34 and a swirl generator 36 which has an inlet passage 38 that allows air in the plenum chamber to

An inerting system is provided with a vortex tube for separating air into nitrogen enriched air (NEA) and oxygen enriched air (OEA). The inerting system has a warming device which warms NEA as it flows between an NEA outlet of the vortex tube and an NEA port of the inerting system. A method is also provided of supplying conditioned NEA to an enclosure, in which air is centrifugally separated into NEA and OEA in a vortex tube and the NEA is warmed so as to produce the conditioned NEA.

A method of clearing a swirl generator of a vortex tube for an aircraft enclosure inerting system. The vortex tube has an inlet chamber and a vortex chamber which can receive air from the inlet chamber via flow paths in the swirl generator. The method comprises operating the vortex tube in a foreign matter clearance mode in which a reversed flow of gas is passed from the vortex chamber into the inlet chamber through the flow paths and dislodges accumulated foreign matter therefrom. Dislodged foreign matter is then exhausted from the vortex tube then the vortex tube is operated in a normal mode of operation.

The invention discloses a modularized nitrogen inerting system. The system comprises a control box, a nitrogen supply main pipeline, an expansion pipe, a valve group, related instruments and protected equipment, the controller switch assembly is in signal connection with the valve set and the measuring element set and used for executing pressure testing, purging, maintaining, interlocking protection and the like. According to the invention, the Pamp is adopted; the configuration box I and the control box are modularly designed, so that the plug-and-play and flexible deployment can be realized, and the installation cost can be greatly reduced; the oxygen content is ensured to be reduced to a safe acceptable range and reliably maintained through different flow control or multi-mode air replacement in combination with a flow-time integral or regular self-correction mechanism; the functions of automatic adjustment, multiple pressure monitoring and uncovering interlocking are integrated, rapid alarm or interlocking shutdown is achieved when abnormity occurs, and intrinsically-safe, efficient and energy-saving intelligent inerting protection is provided for a centrifugal machine and a closed container.

A build unit for additively manufacturing three-dimensional objects may include an energy beam system, an irradiation chamber, an inertization system having a return manifold configured to evacuate a process gas from the irradiation chamber. The return manifold includes a plurality of return manifold bodies and return manifold inlet disposed at a bottom of the irradiation chamber. The plurality of return manifold bodies includes one or more return manifold pathways downstream of the return manifold inlet. The plurality of return manifold bodies also includes one or more recapture pathways positioned to receive the process gas into the one or more return manifold pathways that flows past the return manifold inlet.

The invention belongs to the field of product mechanical structure design, and discloses an integrated multistage flow cut-off device which comprises a main valve assembly, a small-flow electromagnetic valve, a medium-flow electromagnetic valve, a small-flow actuating assembly and a medium-flow actuating assembly. Wherein one pipeline is controlled to be connected and disconnected through the small-flow actuating assembly, and the other pipeline is controlled to be connected and disconnected through the medium-flow actuating assembly. The small-flow electromagnetic valve controls a channel of the small-flow actuating assembly to be connected or disconnected, and the medium-flow electromagnetic valve controls a channel of the medium-flow actuating assembly to be connected or disconnected. A graded flow control scheme is adopted, an instruction from the inerting system controller is received, the nitrogen-rich gas flow mode of the inerting system is adjusted by switching on and off of the electromagnetic valve, the nitrogen-rich gas flow modes are automatically switched into the small flow mode, the medium flow mode and the large flow mode or the gas flow is cut off, and the different flow requirements of the fuel tank for the nitrogen-rich gas in all the flight stages are met.

A sparging evaporator for an inerting system including an outer vessel, an inner vessel within the outer vessel, and a plenum formed between the inner and outer vessels. The outer vessel includes a gas inlet for receiving inlet gas into the plenum, and a liquid inlet for receiving liquid fuel into the plenum. The inlet gas in the plenum generates a gas pressure that is exerted against a free surface of the liquid fuel in the plenum thereby forcing the liquid fuel and the inlet gas through an inlet of the inner vessel. The inner vessel contains a lattice structure that promotes liberation of fuel vapor from the liquid fuel and enables the inlet gas in the liquid fuel to sparge the fuel vapor in the liquid fuel, thereby forming a fuel-enriched gas mixture that can be fed to a reactor of the inerting system.

A method for reducing thermal runaways in a battery pack includes detecting a temperature inside the battery pack, if the temperature detected is higher than a predetermined temperature, injecting air with nitrogen and oxygen, the oxygen being less than 10% in volume, inside the battery pack and removing oxygen from the inside of the battery pack. The system includes a temperature sensor, an inerting system for injecting air with nitrogen and oxygen, the oxygen being less than 10% in volume, inside the battery pack if a temperature detected by the temperature sensor is higher than a predetermined temperature, and an exit duct, through which oxygen is removed from the battery pack if the temperature detected by the temperature sensor is higher than a predetermined temperature.

The invention discloses a marine methanol supply system which comprises a methanol cabin and an engine, the methanol cabin is connected with a coarse filter through a main valve pipeline, the coarse filter is connected with a supply pump through a pipeline, an outlet pipeline of the supply pump is connected with a fine filter, and the fine filter is connected with an engine pipeline through a pressure regulating valve. An outlet of the fine filter is connected with a methanol cabin pipeline through a pressure release valve, and an inlet pipeline of the coarse filter is connected with a nitrogen inerting system for purging the pipeline, so that the safety risk in the system is reduced, and the stable operation of the system is guaranteed; an outlet pipeline of the supply pump is connected with a surge tank, the upper end of the surge tank is communicated with a pipeline of the nitrogen inerting system through a first electronic ball valve, and a heat exchange system for adjusting the temperature of methanol is mounted between the coarse filter and the fine filter, so that the methanol supply pressure and temperature of the methanol supply system are constant; and a good conveying state of methanol and safe and stable operation of the system are ensured.

An aircraft fuel supply line arrangement comprises a fuel line (110) extending from a fuel inlet (111) receiving aircraft fuel into an aircraft fuel tank (200) to be supplied to one or more fuel outlets (112) located in the aircraft fuel tank (200), the aircraft fuel supply line arrangement further comprising a nitrogen-rich gas input line (120), a nitrogen-rich gas output line (130), a nitrogen-rich gas output line (130), a nitrogen-rich gas output line (130), a nitrogen-rich gas output line (130), and a nitrogen-rich gas output line (130), and the nitrogen-rich gas input line (120) is connected to the nitrogen-rich gas input line (120). The nitrogen-rich gas input pipeline (120) extends to the fuel oil pipeline (110) from a nitrogen-rich gas inlet (121) for receiving nitrogen-rich gas from an inerting system, and an exhaust valve (130) is arranged on the fuel oil pipeline (110) so as to exhaust the nitrogen-rich gas supplied into the fuel oil pipeline (110) from the nitrogen-rich gas input pipeline (120). According to the aircraft fuel supply pipeline device, a fuel pipeline of a fuel system and a nitrogen-rich gas pipeline of an inerting system are allowed to be highly integrated in the fuel tank, so that various technical advantages after integration are obtained.

The fuel storage and distribution system based on multiple variable-volume fuel tanks can simply measure the fuel quantity and quickly disassemble and maintain, can eliminate the unusable fuel in the fuel tank, reduce the flight weight of the aircraft, and greatly reduce the use of the inerting system, and improve the economy of the aircraft. The fuel storage and distribution system has multiple variable-volume fuel tanks, and can realize fuel storage and fuel distribution functions based on multiple fuel tanks. The outer peripheral wall of each fuel tank is a fixed-volume rigid body, and the inside of each fuel tank is divided into a fuel storage part for storing fuel and a pressure regulating fluid storage part for storing pressure regulating fluid. A one-way oil inlet valve and a one-way oil outlet valve connected to both ends of a two-way cross transfer valve are provided at the fuel storage part, and a pressure regulating valve connected to a pressure control pump and used to control the pressure of the pressure regulating fluid is provided at the pressure regulating fluid storage part.

The present application belongs to the field of coal mining, and particularly relates to a mine fire area intelligent linkage sealing and unsealing device, which comprises a door frame fixed on a tunnel wall, a porous diffuser inlaid on the fire-facing side of the door frame, an annular sealing groove arranged on the inner side of the door frame, and a micro nozzle in series embedded in the annular sealing groove; a protective door body hinged to the door frame, an internal integrated pressure relief pipeline and an inert gas pipeline, a side frame of the protective door body provided with a groove, an expansion type rubber sealing sleeve in the groove communicated with the inert gas pipeline; an arc-shaped pressing assembly slidingly arranged on the fire-facing side of the protective door body, a dynamic inertization system for controlling directional distribution of inert gas, a sealing structure comprising a two-component adhesive injection system, the two-component adhesive injection system communicated with the micro nozzle, and the two-component adhesive injection system connected in parallel with the dynamic inertization system. The present application can quickly seal, resist explosion and relieve pressure, and improve the reliability and safety of mine fire emergency isolation.