30results about How to "Meet gas supply needs" patented technology

The invention provides an air filter for an efficient engine. The air filter comprises a filter drum, a first end cover, a second end cover and a controller. An inner filter drum, a first filter element and a second filter element are arranged in a first cavity, the inner filter drum is arranged in the first filter element, and the first filter element is arranged in the second filter element. A second cavity is divided by the inner filter drum, the first filter element and the second filter element into a first filter cavity, a second filter cavity, a third filter cavity and a fourth filter cavity. An air inlet is communicated with the first filter cavity, and an air outlet is communicated with the fourth filter cavity. Filter holes are distributed in the inner filter drum, and a first detecting device for detecting the thickness of dust on the inner filter drum is arranged on the inner filter drum, and connected with the controller. A water guide pipe is arranged in the inner filter drum, spray heads are distributed on the water guide pipe, and flow valves are arranged in the spray heads. Water is sprayed through the spray heads, therefore, a large number of impurities in the air can be removed, and the inner filter drum can be cleaned and is prevented from being blocked; the air is filtered thoroughly, and the air supply needs of the engine are met.

The invention discloses a large-cylinder-diameter gas engine turbulent jet ignition system, a gas supply system and method, and the turbulent jet ignition system comprises a pre-combustion chamber which forms a spatial umbrella-shaped distributed ignition source in a main combustion chamber through a plurality of fluid passages; a sparking plug which is arranged on the pre-combustion chamber and used for igniting mixed gas in the pre-combustion chamber; a pre-combustion chamber gas injection valve which is connected with the pre-combustion chamber through a gas conveying pipeline and a one-way valve and used for injecting auxiliary gas into the pre-combustion chamber in a timed and quantitative mode. The gas supply system comprises a controller and the turbulent jet ignition system, and the controller is used for controlling gas supply of the pre-combustion chamber and fuel supply of the gas inlet channel of the main combustion chamber. Accurate stratified combustion can be formed between the pre-combustion chamber and the main combustion chamber; turbulent jet flow generated by mixed combustion in the pre-combustion chamber can form umbrella-shaped ignition source distribution in the main combustion chamber, the flame propagation distance is effectively shortened, and the combustion speed of mixed gas in the main combustion chamber is increased.

The present invention provides a multi-stage high-efficiency engine air filter, comprising a first filter body, a second filter body, a third filter body, a plurality of first filter elements, a second filter element, a third filter element, and a first filter body. The openings at both ends are respectively screwed with a first end cover and a second end cover. The second filter body is a cylinder structure with both ends open; the third filter body is a cylinder structure with one end open and one end closed. The body is arranged in the first filter body and the cover is arranged outside the second filter body; a plurality of first filter elements are arranged in parallel in the first filter body, and the second filter body is provided with a rotating shaft arranged coaxially with it, and the plurality of first filter elements pass through The rotating shaft is installed in the second filter body and can rotate with the rotation of the rotating shaft; the second filter element is arranged in the third filter body and is sleeved on the outside of the second filter body; the third filter element is arranged in the first filter body and sleeved in the third filter body outside of the filter. The present invention can completely filter out impurities in the air by performing multi-channel filtration on the air, thereby improving the filtration efficiency of the air and the cleanliness of the filtration.

The invention relates to a method used to stabilize CNG high-flow air feed. A device comprises a collecting pipeline used to collect natural gas released by each tank car. The collecting pipeline comprises a main pipe and branch pipes arranged on the main pipe. The air inflow end of each branch pipe is respectively connected with the air outlet of the tank car. The air outlet end of the main pipe is provided with a main pipe pressure measuring device and a flow measuring device. Each branch pipe is respectively provided with an automatic control valve. The pipe body of each branch pipe between the automatic control valve and the tank car is respectively provided with a branch pipe pressure measuring device. A control device receives signals acquired by the branch pipe pressure measuring devices, the main pipe pressure measuring devices, and the flow measuring device, and analyzes and processes the signals and regulates on-off state of each automatic control valve according to analysis results. In the above technical scheme, the control device regulates on-off state of each automatic control valve, so that the output end of the main pipe can stably provide high-flow air feed, and high-flow air feed requirements of users are satisfied.

The invention discloses an intelligent gas supply control system for a liquefied natural gas (LNG) vehicle. The system comprises an intelligent control unit, a hydraulic oil tank, a hydraulic oil pump, an LNG infusion pump, an LNG bottle, a carburetor, a valve set, a hydraulic pressure sensor, a carburetor back fuel gas temperature sensor, a buffer tank, a buffer tank fuel gas pressure sensor and a buffer tank fuel gas temperature sensor. The intelligent control unit collects the state information of an engine, an LNG bottle liquid level meter as well as all the sensors mounted in the system; the pressure and flow direction of a hydraulic system are controlled by controlling movement of the valve set to drive the LNG infusion pump to pump out LNG liquid from the LNG bottle; and according to the state requirement of the whole vehicle, the working frequency of the LNG infusion pump is controlled, the target pressure of the buffer tank is adjusted or maintained to meet the requirement of the whole vehicle for gas supply, and additionally, the intelligent control unit has the function of fault diagnosis and treatment, so that the effect that the intelligent gas supply control system achieves the safe, efficient, intelligent and energy-saving gas supply purpose is guaranteed.

The invention relates to the field of wind tunnel tests, and discloses an improved wind tunnel air inlet test model supporting system which comprises a ventilation arm and an attack angle pre-deviation rod, and the ventilation arm is connected with a roll angle rotating shaft mechanism on a wind tunnel attack angle mechanism; the ventilation arm is sequentially provided with a gas passage, a wiring passage and a ventilation cavity from inside to outside; the gas passage and the ventilation cavity are coaxially arranged; the ventilation arm is connected with the attack angle pre-deviation rod; a gas passage extension section communicated with the gas passage and a routing passage extension section communicated with the routing passage are arranged in the angle-of-attack pre-deviation rod; the ventilation cavity is communicated with the ventilation pipeline, and the gas passage extension section is communicated with the gas outlet pipeline; and a wiring hole is formed in the wall of the attack angle pre-deviation rod. The problems that in the prior art, a traditional model supporting system cannot achieve integrated arrangement of ventilation and wiring, and operation is inconvenient due to the fact that instruments and pipelines are many in the wind tunnel testing process are solved.

The invention discloses a supercritical carbon dioxide turbine shaft seal gas supply and leaked gas recovery system and method. The system comprises a compressor outlet shaft seal gas source supply pipeline, a low-temperature heat regenerator cold side outlet shaft seal gas source supply pipeline and a shaft seal leaked gas recovery system. According to the compressor outlet shaft seal gas source supply pipeline, a compressor outlet is connected with a high-pressure storage tank inlet, a high-pressure storage tank is divided into two paths, one path is connected with a shaft seal gas supply main pipe through an electric heating oil heater, a regulating valve and the like, and the other path is connected with a shaft seal gas supply desuperheater through a regulating valve and the like; according to the low-temperature heat regenerator cold side outlet shaft seal gas source supply pipeline, a low-temperature heat regenerator cold side outlet is connected to the shaft seal gas supply main pipe through an adjusting valve and the like; and according to the shaft seal leaked gas recovery system, a shaft seal leaked gas pipeline is sequentially connected with a shaft seal leaked gas cooler, a shaft seal leaked gas conveying pump and a surge tank. According to the system, under different working conditions of starting, grid-connected power generation, thermal state trip, load shedding and the like, safe and efficient operation of a supercritical carbon dioxide cycle generator set is achieved by switching different shaft seal gas supply sources and recycling leaked gas.

The embodiment of the invention provides semiconductor process equipment and an integrated gas supply system thereof. The integrated gas supply system is arranged between a gas source and a process chamber of the semiconductor process equipment, is used for conveying gas into the process chamber, and comprises a plurality of gas path conveying modules which are detachably connected with one another; each gas path conveying module comprises a first base block and first control parts, and a first gas path is formed in the first base block; and at least one first control part is arranged on the first base block and connected with the first gas path. According to the integrated gas supply system, the gas path conveying modules can be randomly combined to adapt to different types of semiconductor process equipment, so that the overall universality is greatly improved, and the problem of the high customization degree is avoided. In addition, when a certain gas path conveying module is contaminated, only the gas path conveying module needs to be replaced independently, and therefore the application and maintenance cost is greatly reduced.

The invention provides an engine-used air filter with filter elements detachable. The air filter comprises a first filter body, a second filter body and a third filter body. The first filter body, the second filter body and the third filter body are each of a barrel structure with the two ends openable. An annular check ring is arranged on the inner wall of the first filter body. The first filter element is detachably mounted in the annular check ring. One end of the second filter body extends into the first filter body and is clamped into a first annular clamping groove. The other end of the second filter body is in threaded connection with a first end cover. The second filter element is arranged in the second filter body. The interior of the second filter body is partitioned into a first filter chamber and a second filter chamber through the second filter element. An air inlet is formed in the first end cover. One end of the third filter body extends into the first filter body and is clamped into a third annular clamping groove. The other end of the third filter body is in threaded connection with a second end cover. The third filter element is arranged in the third filter body. An air outlet is formed in the second end cover. According to the engine-used air filter, air is filtered through multiple channels; impurities in the air can be thoroughly filtered out; and air filtering efficiency and filtering cleanliness are improved.

The invention provides a mast device suitable for an amphibious unmanned boat. The device includes a mast body, a transverse rod, a limiting buckle, a boat hook and a baffle; the baffle is installed on the top of the mast body, the transverse rod is installed on the upper portion of the mast body through a rotary ring, and a radar, a camera and a searchlight are hung on the transverse rod; the side, close to the boat tail, of the bottom of the mast device is provided with the limiting buckle; the side close to the boat head is provided with the boat hook; the mast body is internally provided with an air supply pipe, an exhausting pipe, ventilation equipment and an upper interface plate, and the air supply pipe and the exhausting pipe are communicated with the boat body; a heat insulating layer is arranged between the air supply pipe and the exhausting pipe, the ventilation equipment is installed on the section of the middle section of the mast body, the upper interface plate is installed on the inner bottom of the mast body, a lower interface plate is installed correspondingly to the upper interface plate, and a power supply interface and a communication interface are arranged on the upper interface plate and the lower interface plate respectively; the transverse rod, the ventilation equipment, the upper interface plate and the lower interface plate are connected with a main controller in the boat body separately. The mast device provides a guarantee for refreshing air in the unmanned boat body.

The invention relates to the field of fuel injection devices and control, in particular to a marine dual-fuel / gas engine multipoint multi-stage injection system. The marine dual-fuel / gas engine multipoint multi-stage injection system comprises an air cylinder, an intake valve, an intake manifold, an exhaust valve, an exhaust manifold, a gas collector, an injection valve block, a pressure stabilizing cavity, an air rail pipe, a gas pressure sensor, a gas temperature sensor, a pressure regulator, an on-off solenoid valve, a filter, a gas storage unit, a control system and a lambda sensor. The injection valve block can be used to solve problems about development, modification and matching of dual-fuel or gas engines, gas supply requirements for high flow under high load and high revolution speed and small flow under low load of the engines can be met, gas injection control precision of the dual-fuel / gas engines is increased, fuel distribution uniformity of different cylinders is improved, and thus dynamic property, economical efficiency and emission performance of the engines are improved.

The invention relates to the field of fuel injection devices and control, in particular to a marine dual-fuel / gas engine multipoint multi-stage injection system. The marine dual-fuel / gas engine multipoint multi-stage injection system comprises an air cylinder, an intake valve, an intake manifold, an exhaust valve, an exhaust manifold, a gas collector, an injection valve block, a pressure stabilizing cavity, an air rail pipe, a gas pressure sensor, a gas temperature sensor, a pressure regulator, an on-off solenoid valve, a filter, a gas storage unit, a control system and a lambda sensor. The injection valve block can be used to solve problems about development, modification and matching of dual-fuel or gas engines, gas supply requirements for high flow under high load and high revolution speed and small flow under low load of the engines can be met, gas injection control precision of the dual-fuel / gas engines is increased, fuel distribution uniformity of different cylinders is improved, and thus dynamic property, economical efficiency and emission performance of the engines are improved.

The invention provides an air filter for an automobile engine. The air filter comprises a filter body, a first filter element, a second filter element, a first end cover and a second end cover. A round partition plate is arranged in the filter body. The interior of the filter body is partitioned into a first cavity and a second cavity through the partition plate. The first filter element is arranged in the first cavity. The first cavity is partitioned into a first filter chamber and a second filter chamber through the first filter element. An air guiding pipe is arranged in the first filter chamber. The air guiding pipe comprises multiple U-shaped pipe bodies which are arranged in an equally-spaced manner. Any two adjacent U-shaped pipe bodies are connected through a semicircular bent joint. The U-shaped pipe bodies and the semicircular bent joints are each provided with ventilation holes. The first filter element comprises two cylindrical segments and a corrugated segment connecting the two cylindrical segments. The second filter element is arranged in the second cavity. The second cavity is partitioned into a third filter chamber and a fourth filter chamber through the second filter element. Air guiding holes enabling the second filter chamber to communicate with the fourth filter chamber are formed in the partition plate. According to the air filter, air is filtered through multiple channels; air filtering efficiency and filtering cleanliness are improved; and the air supplying requirement of the engine is met.

The present invention proposes an air filter for high-efficiency engines, which includes a filter cartridge, a first end cover, a second end cover, and a controller; The filter cartridge is set inside the first filter element, and the first filter element is set inside the second filter element. The inner filter cartridge, the first filter element and the second filter element divide the second cavity into the first filter cavity, the second filter cavity and the third filter cavity and the fourth filter chamber, the air inlet is connected to the first filter chamber, and the air outlet is connected to the fourth filter chamber; filter holes are distributed on the inner filter cartridge, and the first filter for detecting the thickness of dust on the inner filter cartridge is arranged on the inner filter cartridge The detection device, the first detection device is connected with the controller, the inner filter cylinder is provided with a water pipe, the water pipe is distributed with a nozzle, and the nozzle is provided with a flow valve. The invention can not only remove a large amount of impurities in the air by spraying water from the nozzle, but also clean the inner filter cartridge to prevent the inner filter cartridge from being clogged, thoroughly filter the air, and meet the air supply demand of the engine.

The invention provides a dual-fuel engine LNG supply system. The dual-fuel engine LNG supply system comprises an LNG vaporizer, an NG heater, a circulating pump, a first heater, a second heater, a first three-way adjusting valve, a second three-way adjusting valve, an LNG inlet pipeline, an NG outlet pipeline, a hot water inlet pipeline, a hot water outlet pipeline, a steam inlet pipeline and a steam outlet pipeline. The LNG inlet pipeline communicates with an LNG inlet of the LNG vaporizer. An NG outlet of the LNG vaporizer communicates with an NG inlet of the NG heater. An NG outlet of the NG heater communicates with the NG outlet pipeline. According to the dual-fuel engine LNG supply system, the compatibility of the gas supply system is improved, LNG vaporization heating can be conducted through multiple heat sources, meanwhile, the self-adjusting capacity of the gas supply system is improved, and accordingly the situation that the temperature and flow of the heat sources or the host load is changed is handled. The invention further provides an LNG ship.

The invention discloses a cleaning system which is used for cleaning a material gate (3) of an asphalt mixing plant, and comprises a lytic agent branch for providing an asphalt lytic agent and a spray nozzle (2) which is opposite to the material gate (3), as well as a gas supply branch for providing compressed gas, and an outlet of the gas supply branch and the outlet of the lytic agent branch are connected with an inlet of the spray nozzle (2). The cleaning system has high cleaning efficiency and convenient operation and can reduce the asphalt cleaning cost. The invention further provides the asphalt mixing plant comprising the cleaning system, and the utilization of the asphalt mixing plant can improve the quality of asphalt mixture, lead the production to be safer and realize higher reliability.

The invention provides an air filter for an automobile engine. The air filter comprises a filter body, a first filter element, a second filter element, a first end cover and a second end cover. A round partition plate is arranged in the filter body. The interior of the filter body is partitioned into a first cavity and a second cavity through the partition plate. The first filter element is arranged in the first cavity. The first cavity is partitioned into a first filter chamber and a second filter chamber through the first filter element. An air guiding pipe is arranged in the first filter chamber. The air guiding pipe comprises multiple U-shaped pipe bodies which are arranged in an equally-spaced manner. Any two adjacent U-shaped pipe bodies are connected through a semicircular bent joint. The U-shaped pipe bodies and the semicircular bent joints are each provided with ventilation holes. The first filter element comprises two cylindrical segments and a corrugated segment connecting the two cylindrical segments. The second filter element is arranged in the second cavity. The second cavity is partitioned into a third filter chamber and a fourth filter chamber through the second filter element. Air guiding holes enabling the second filter chamber to communicate with the fourth filter chamber are formed in the partition plate. According to the air filter, air is filtered through multiple channels; air filtering efficiency and filtering cleanliness are improved; and the air supplying requirement of the engine is met.

The invention discloses an intelligent gas supply control system for a liquefied natural gas (LNG) vehicle. The system comprises an intelligent control unit, a hydraulic oil tank, a hydraulic oil pump, an LNG infusion pump, an LNG bottle, a carburetor, a valve set, a hydraulic pressure sensor, a carburetor back fuel gas temperature sensor, a buffer tank, a buffer tank fuel gas pressure sensor and a buffer tank fuel gas temperature sensor. The intelligent control unit collects the state information of an engine, an LNG bottle liquid level meter as well as all the sensors mounted in the system; the pressure and flow direction of a hydraulic system are controlled by controlling movement of the valve set to drive the LNG infusion pump to pump out LNG liquid from the LNG bottle; and according to the state requirement of the whole vehicle, the working frequency of the LNG infusion pump is controlled, the target pressure of the buffer tank is adjusted or maintained to meet the requirement of the whole vehicle for gas supply, and additionally, the intelligent control unit has the function of fault diagnosis and treatment, so that the effect that the intelligent gas supply control system achieves the safe, efficient, intelligent and energy-saving gas supply purpose is guaranteed.

The invention discloses a cleaning system which is used for cleaning a material gate (3) of an asphalt mixing plant, and comprises a lytic agent branch for providing an asphalt lytic agent and a spray nozzle (2) which is opposite to the material gate (3), as well as a gas supply branch for providing compressed gas, and an outlet of the gas supply branch and the outlet of the lytic agent branch are connected with an inlet of the spray nozzle (2). The cleaning system has high cleaning efficiency and convenient operation and can reduce the asphalt cleaning cost. The invention further provides the asphalt mixing plant comprising the cleaning system, and the utilization of the asphalt mixing plant can improve the quality of asphalt mixture, lead the production to be safer and realize higher reliability.

The invention discloses a chassis refrigerating system of an LNG commercial automobile vehicle-mounted refrigerator and a control method, the chassis refrigerating system comprises the vehicle-mounted refrigerator and an LNG gas supply module, and the LNG gas supply module is connected with an engine gas supply module and the vehicle-mounted refrigerator through two pipelines; the vehicle-mounted refrigerator comprises an LNG inlet connected with the LNG supply module through a pipeline and an LNG outlet connected with the engine supply module through a pipeline. A control module used for controlling the LNG gas supply module to supply gas into the vehicle-mounted refrigerator is connected between the LNG gas supply module and the vehicle-mounted refrigerator. The chassis refrigerating system of the vehicle-mounted refrigerator of the LNG commercial vehicle is designed into four modules including the vehicle-mounted refrigerator, the LNG gas supply module, the engine gas supply module and the control module, and the refrigerating system is simple in structure, convenient to assemble and high in function integration degree.

The invention provides an air supply control method, method and device for a wastewater station, and relates to the technical field of industrial wastewater treatment. The wastewater station comprises an adjusting tank and a biochemical tank, and a first air duct communicated with the adjusting tank and a second air duct communicated with the biochemical tank are connected in parallel. The system comprises: a liquid level sensor configured to collect liquid level information of the adjusting tank; the flow meter is configured to collect air volume information of the first air duct; the control valve is arranged in the first air duct; the controller is configured to control the opening degree of the control valve to be gradually increased under the condition that the liquid level, determined according to the liquid level information, of the adjusting tank is higher than a first preset liquid level, so that air from the fan enters the adjusting tank and the biochemical tank through the first air duct and the second air duct respectively; and under the condition that the air volume, determined according to the air volume information, of the first air duct reaches the preset air volume, the opening degree of the control valve is controlled to be kept unchanged.

The invention provides an air compression device and an air compression system and relates to the technical field of air compression. The air compression device comprises a base, a plurality of scrollair compressor hosts, an oil-gas separation barrel, an oil filter, a cooling device and a control device. Through arrangement of the multiple scroll air compressor hosts, the air displacement of theair compression device can be improved so as to meet the requirement for large-displacement air supply.

The invention provides a liquid nitrogen vaporization device. The liquid nitrogen vaporization device comprises a low-temperature container, a low-temperature liquid nitrogen pump, a vaporizer and a high-pressure gas cylinder. The low-temperature container is a horizontal vacuum heat insulation low-temperature container, the design pressure is 0.8 MPa, the low-temperature container comprises an inner barrel body and an outer barrel body, the inner barrel body is fixed to the outer barrel body through a stainless steel sling, and a middle interlayer is filled with pearlife. The low-temperatureliquid nitrogen pump is a horizontal double-row piston pump of 45-50 MPa, the vaporizer is a room temperature type vaporizer of 45-50 MPa, an inner casing pipe is a stainless steel pipe, the tail of aheat exchange finned tube is made of an aluminum alloy, and the high-pressure gas cylinder is an S-type seamless structural steel cylinder of 45-50 MPa. The liquid nitrogen vaporization device provided by the invention mainly achieves nitrogen supply under various working conditions, has the characteristics of being flexible, safe, reliable and easy to operate, can meet the gas supply requirements of various industries and is especially used for nitrogen in remote areas conveniently.

The invention provides a mast device suitable for an amphibious unmanned boat. The device includes a mast body, a transverse rod, a limiting buckle, a boat hook and a baffle; the baffle is installed on the top of the mast body, the transverse rod is installed on the upper portion of the mast body through a rotary ring, and a radar, a camera and a searchlight are hung on the transverse rod; the side, close to the boat tail, of the bottom of the mast device is provided with the limiting buckle; the side close to the boat head is provided with the boat hook; the mast body is internally provided with an air supply pipe, an exhausting pipe, ventilation equipment and an upper interface plate, and the air supply pipe and the exhausting pipe are communicated with the boat body; a heat insulating layer is arranged between the air supply pipe and the exhausting pipe, the ventilation equipment is installed on the section of the middle section of the mast body, the upper interface plate is installed on the inner bottom of the mast body, a lower interface plate is installed correspondingly to the upper interface plate, and a power supply interface and a communication interface are arranged on the upper interface plate and the lower interface plate respectively; the transverse rod, the ventilation equipment, the upper interface plate and the lower interface plate are connected with a main controller in the boat body separately. The mast device provides a guarantee for refreshing air in the unmanned boat body.

The invention discloses a gas supply system for a hybrid chassis. The gas supply system for the hybrid chassis comprises a first electric air compressor, a second electric air compressor, a first condenser, a second condenser, a first air dryer, a second air dryer, a gas storage barrel assembly and a four-loop protecting valve, wherein a gas inlet of the first condenser is connected to a compressed gas outlet of the first electric air compressor; a gas inlet of the second condenser is connected to a compressed gas outlet of the second electric air compressor; a gas inlet of the first air dryeris connected to a purified gas outlet of the first condenser; a gas inlet of the second air dryer is connected to a purified gas outlet of the second condenser; the dry gas outlet of the first air dryer and the dry gas outlet of the second air dryer are connected to an air inlet of the gas storage barrel assembly; and a gas inlet of the four-loop protecting valve is connected to a gas outlet of the gas storage barrel assembly. The technical problem that a single electric air compressor product cannot meet gas supply requirements of a hybrid chassis with more than five shafts is solved.

The invention discloses a low-pressure gas engine gas supply valve module. The low-pressure gas engine gas supply valve module comprises a manual gas stop valve, a gas filter, a gas electromagnetic stop valve, a first pressure detection device, a flame arrester, a pressure regulating valve, a gas inlet connecting pipe and a second pressure detection device, wherein an inlet of the manual gas stopvalve serves as a gas inlet, the gas filter is connected with an outlet of the manual gas stop valve, one end of the gas electromagnetic stop valve is connected with the gas filter through a connecting pipe, the first pressure detection device is arranged on the connecting pipe, the front end of the fire arrester is connected with the other end of the gas electromagnetic stop valve, the front endof the pressure regulating valve is arranged to be connected with the rear end of the flame arrester, the gas inlet connecting pipe is connected with the rear end of the pressure regulating valve, andthe second pressure detection device is arranged on the gas inlet connecting pipe. The low-pressure gas engine gas supply valve module is complete in function, reasonable in price, wide in application range and capable of completely meeting the gas supply requirements of a gas engine.

The invention discloses a gas supply system for a hybrid chassis. The gas supply system for the hybrid chassis comprises a first electric air compressor, a second electric air compressor, a first condenser, a second condenser, a first air dryer, a second air dryer, a gas storage barrel assembly and a four-loop protecting valve, wherein a gas inlet of the first condenser is connected to a compressed gas outlet of the first electric air compressor; a gas inlet of the second condenser is connected to a compressed gas outlet of the second electric air compressor; a gas inlet of the first air dryeris connected to a purified gas outlet of the first condenser; a gas inlet of the second air dryer is connected to a purified gas outlet of the second condenser; the dry gas outlet of the first air dryer and the dry gas outlet of the second air dryer are connected to an air inlet of the gas storage barrel assembly; and a gas inlet of the four-loop protecting valve is connected to a gas outlet of the gas storage barrel assembly. The technical problem that a single electric air compressor product cannot meet gas supply requirements of a hybrid chassis with more than five shafts is solved.

The invention provides an LNG gas supply system for a dual-fuel engine, comprising an LNG vaporizer, an NG heater, a circulation pump, a first heater, a second heater, a first three-way regulating valve, a second three-way regulating valve, and an LNG inlet pipeline, NG outlet pipeline, hot water inlet pipeline, hot water outlet pipeline, steam inlet pipeline and steam outlet pipeline; the LNG inlet pipeline communicates with the LNG inlet of the LNG vaporizer, and the LNG vaporizer The NG outlet of the NG heater communicates with the NG inlet of the NG heater, and the NG outlet of the NG heater communicates with the NG outlet pipeline. The invention not only improves the compatibility of the gas supply system, can use various heat sources to vaporize and heat LNG, but also improves the self-regulating ability of the gas supply system to cope with changes in the temperature and flow of the heat source or the load of the main engine. The invention also provides an LNG ship.