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

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 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 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 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 inlet test model support system. The model support system includes a ventilation arm and an angle of attack pre-bias rod. The ventilation arm is connected to the wind tunnel angle of attack mechanism. The roll angle shaft mechanism is connected; the ventilation arm is provided with a gas passage, a routing passage, and a ventilation cavity in sequence from the inside to the outside; the gas passage and the ventilation cavity are coaxially arranged; the ventilation arm and the angle of attack pre-biased rod connection; the angle of attack pre-bias rod is provided with an extended section of the gas passage connected with the gas passage, and an extended section of the routing passage connected with the routing passage; the ventilation cavity is communicated with the ventilation pipeline, and the extended section of the gas passage is connected with the The air outlet pipeline is connected; the wall of the angle-of-attack pre-deflection rod has a wiring hole. The invention solves the problem that the traditional model support system in the prior art cannot realize the integrated setting of ventilation and routing, and the problem of inconvenient operation caused by many instruments and many pipelines in the wind tunnel test process.

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 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.