527 results about "Gas engine" patented technology

A method of operating a gas turbine engine comprising an engine core comprising a turbine, a compressor, a combustor arranged to combust a fuel, and a core shaft connecting the turbine to the compressor; a fan located upstream of the engine core; a gearbox that receives an input from the core shaft and outputs drive to the fan; an oil loop system arranged to supply oil to the gearbox; and a heat exchange system comprising an air-oil heat exchanger through which the oil flows, a fuel-oil heat exchanger through which the oil and the fuel flow; and a valve arranged to allow a proportion of the oil sent via at least one of the heat exchangers to be varied, is disclosed, the method comprising controlling the valve such that, under cruise conditions, an oil flow ratio of:rate⁢ of⁢ oil⁢ flow⁢ into⁢ air-oil⁢ heat⁢ exchangerrate⁢ of⁢ oil⁢ flow⁢ into⁢ fuel-oil⁢ heat⁢ exchangeris in the range from 0 to 0.59.

Disclosed is n engine system 2 for a vehicle, the engine system comprising a fuel injector 26 for delivering fuel directly into an associated engine cylinder 12, the associated cylinder having a cylin

The invention discloses a gas generator set monitoring system and method, and the system collects various state parameters during the operation of a gas generator set through a sensor group, transmits the state parameters to a remote monitoring server, and arranges the state parameters into a format suitable for machine learning analysis at a server terminal. Further performing time sequence correlation analysis on the state parameters by using a machine learning algorithm based on deep learning and a data processing technology so as to excavate a time sequence dynamic correlation mode among various state parameters in the operation process of the gas generator set, thereby intelligently determining whether the working state of the gas generator set is abnormal or not; and efficient monitoring of the working state of the gas generator set is realized. Through the mode, the remote monitoring capability of the fault mode of the gas generator set can be improved, the operation condition of the gas generator set can be known in time, any potential problem can be quickly responded, and meanwhile, a solid technical foundation is provided for the remote monitoring technology.

Disclosed is an engine system for a vehicle, comprising a rail volume 28 for receiving gaseous fuel; a shut off valve 38 for controlling the supply of fuel to the rail volume ; an injector assembly in

A valve body of the electronic unit pump is provided with a first drainage channel and a second drainage channel which are communicated with a main oil channel, and a first electromagnetic valve used for controlling the first drainage channel to be connected and disconnected and a second electromagnetic valve used for controlling the second drainage channel to be connected and disconnected are installed on the valve body. The second electromagnetic valve is closed in a power-off state, and the second drainage channel is disconnected; and when the fuel pressure is higher than the set value, the second electromagnetic valve is opened in the power-off state, the second drainage channel is communicated for drainage, the second electromagnetic valve is closed in the power-on state, and the second drainage channel is disconnected. By controlling the opening and closing moments of the first electromagnetic valve and the second electromagnetic valve, the three-section fuel injection requirement of the engine in the diesel engine state of'pilot injection, main injection and post injection 'can be met, the fuel supply requirement of the micro-injection gas engine can also be met, and the engine can be restored to the full-power diesel engine state to operate after gas fuel is used up.

The invention provides a waste gas treatment device of a gas turbine thermal power plant, and relates to the technical field of waste gas treatment.The waste gas treatment device comprises a waste gas pretreatment box, one end of the waste gas pretreatment box is connected with the waste gas discharge end of the thermal power plant through a waste gas receiving pipe, and the other end of the waste gas pretreatment box is connected with a waste gas purification box through a first connecting pipe; a waste gas pretreatment mechanism is arranged in the waste gas pretreatment box. The waste gas pretreatment mechanism is arranged, and meanwhile, the waste gas pretreatment mechanism treats returned waste gas, so that the problems that in the background technology, a traditional waste gas combustion device is prone to insufficient combustion, and consequently the emission standard cannot be met are effectively solved; and heat generated by using a traditional waste gas combustion device is generally not utilized, so that energy waste is caused.

Bi-directional motor (36) for gas engine replacement device (10). One embodiment provides a gas engine replacement device (10) including a housing (14), a battery receptacle (54), a motor (36), a power take-off shaft (38) receiving torque from the motor (36), a power switching network (310) configured to selectively provide power to the motor (36), and an electronic processor (302) coupled to the power switching network (310). The electronic processor (302) is configured to rotate the motor (36) in a first direction and receive an input to switch a rotation direction of the motor (36). The electronic processor is also configured to control the power switching network (310) to stop the motor (36) and rotate the motor (36) in a second direction after controlling the power switching network (310) to stop the motor (36).

The invention provides a waste liquid treatment device of a gas turbine thermal power plant, and relates to the technical field of waste liquid treatment.The waste liquid treatment device comprises a filter box, the filter box is fixedly installed on the side wall in a box body, a filter assembly is arranged in the filter box, and a heating mechanism is arranged at the bottom in the box body; a liquid outlet in the bottom of the filter box is communicated with the heating mechanism through a first liquid conveying pipeline, and the reaction precipitation mechanism is arranged on one side of the heating mechanism. The filter box is arranged in the box body to cooperate with the filter assembly to remove large-particle impurities in waste to be treated, and then the filtered waste liquid is conveyed into the heating mechanism through the first liquid conveying pipeline to be heated, so that the waste liquid is better treated by cooperating with the reaction precipitation mechanism; suspended matters, colloidal substances and the like in the waste liquid are condensed into relatively large particles to complete precipitation, and the heating mechanism not only can improve the oxidation reaction efficiency, but also can recycle steam which is easy to obtain and relatively low in cost in a gas turbine thermal power plant for heating, so that efficient utilization of energy is realized.

The invention belongs to the related technical field of pressure tests, and particularly discloses a gas inlet pipeline test device for a gas generator, which comprises a first base and a second base, a round frame is fixedly mounted on one side of the upper end surface of the first base, an annular pipe is embedded in the round frame, and a connecting rod is mounted at one end in the annular pipe through an arranged telescopic mechanism. The outer side of the connecting rod is externally connected with a ring rod through an inner chuck fixedly connected in a sleeving mode, a sealing rotating ring is arranged on the outer wall of one side of the round frame, a test air inlet pipe movably penetrates through the sealing rotating ring in a penetrating mode, and a particle feeding simulation mechanism is arranged at the end, away from the sealing rotating ring, of the test air inlet pipe. By simulating multi-field coupling environments such as pressure fluctuation, particle scouring and mechanical vibration under real working conditions, the problem that data deviation is large due to the fact that complex working conditions cannot be reproduced in a traditional test is solved, and precise detection and full-life-cycle evaluation of the performance such as wear resistance, pressure resistance and blockage resistance of the pipeline are achieved.

A gas-fired heat pump unit that directly utilizes engine waste heat and features adjustable air supply is disclosed. The condenser and water supply and return lines are combined with refrigerant and coolant heat exchange lines. Refrigerant flows from the quasi-two-stage compressor outlet through the refrigerant heat exchange line, dividing it into a main path and an auxiliary path. The auxiliary path connects to the quasi-two-stage compressor air supply port after passing through a first electronic expansion valve and a flue gas heat exchanger. The main path, switched by a four-way reversing valve, can control forward and reverse circulation between the second electronic expansion valve and the outdoor evaporator. The outlet is connected to the quasi-two-stage compressor inlet. Coolant flows from the gas engine outlet through a coolant circulation pump and the coolant heat exchange line back to the inlet. The gas engine exhaust port is connected to the flue gas heat exchanger. Compressor air supply is simple and highly adjustable. The condenser utilizes stepped heating to decouple engine waste heat from compressor power. Heating is continuous during reverse cycle defrosting, improving indoor thermal comfort.

An example system includes a first gas-turbine engine configured to propel an aircraft, the first gas-turbine engine comprising: a first air-turbine starter, the first air-turbine starter configured to rotate a spool of the first gas-turbine engine; and a first electric starter, the first electric starter configured to rotate the spool of the first gas-turbine engine; and one or more controllers collectively configured to: cause, during a time period, the first-air turbine starter and the first electric starter to start the first gas-turbine engine while the aircraft is on the ground; measure, during the time period, values of one or more parameters of the first gas-turbine engine; and determine, based on the values of the one or more parameters, whether the first electric starter is available for use in performing mid-air restart of the first gas-turbine engine.

The invention relates to the technical field of gas engines, and particularly discloses an anti-deformation and high-cooling-efficiency backflow combustion chamber large elbow, the sections of a first layer wall and a second layer wall of the large elbow are arc-shaped, the first layer wall is arranged outside the second layer wall, one end of the first layer wall and one end of the second layer wall are fixedly connected into a whole, and the other end of the first layer wall is arranged outside the second layer wall. The other end of the first layer wall and the other end of the second layer wall are clamped, a space capable of moving relative to each other is formed in the clamping position, a plurality of annular grooves facing the second layer wall are formed in the first layer wall, the annular grooves are attached to the side, facing the first layer wall, of the second layer wall, and a cavity between the first layer wall and the second layer wall is divided into a plurality of impact diffusion cavities through the annular grooves. According to the invention, the gap between the double walls is not changed, the problem of deformation caused by stress due to inconsistent swell capacity of the double walls is prevented, the cooling protection effect of the inner wall is enhanced, cracks caused by too high temperature of the large elbow are prevented, the overall stress is small, cracks are not easy to appear at welding joints, tight connection is realized, and air leakage is not easy.

The invention discloses a fuel supply system, a fuel mixing method and a gas engine, and relates to the technical field of gas engines. The fuel supply system comprises a first fuel supply module, a second fuel supply module and a combustion module, and the first fuel supply module is used for mixing gas fuel with air to form first mixed gas with the gas fuel concentration lower than an ignition limit value; the second fuel supply module provides second mixed gas with the gas fuel concentration higher than the ignition limit value; the output end of the second fuel supply module communicates with the output end of the first fuel supply module, so that the first mixed gas and the second mixed gas are mixed, combustible mixed gas with the gas fuel concentration within the ignition limit value is formed, and the output end of the first fuel supply module further communicates with the combustion module so that the combustible mixed gas can be input into the combustion module. According to the fuel supply system, the tempering combustion range of the engine can be limited between the first fuel supply module and the combustion module, and the explosion risk is reduced.

The invention discloses a heating control method for an engine gas delivery pipeline of a marine gas generator set, which relates to the technical field of marine gas power systems, and comprises the following steps: collecting multi-dimensional environment state information of the gas delivery pipeline in real time, analyzing gas components and pressure fluctuation data, and calculating the temperature of the gas delivery pipeline; a theoretical dew point temperature and a potential paraffin precipitation temperature under real-time pressure are calculated by combining a fuel gas physical property database, a real-time heat exchange model is constructed by combining a pipeline outer wall temperature gradient and a cabin environment temperature, theoretical temperature attenuation curves of different positions of fuel gas in a pipeline are obtained, condensation and paraffin precipitation risk positions and degrees are predicted after comparison, and a real-time heat exchange model is established. And differential electric heat tracing control strategies of different sections of the pipeline are generated in combination with relative humidity data of the cabin. The method can adapt to the real-time physical property of gas and the heat exchange state of the pipeline section, and the heating control execution mode of the gas pipeline is optimized.

The utility model belongs to the field of mounting structures, and particularly relates to a mounting structure of a supercharger of a low-calorific-value gas engine, which comprises the supercharger, a mounting seat, a mounting mechanism and a loosening mechanism, the mounting seat is arranged on the supercharger, the mounting mechanism is arranged on the mounting seat, the loosening mechanism is mounted on the mounting seat, and the loosening mechanism is arranged on the mounting seat. The mounting mechanism comprises a mounting hole and a fixing bolt, the mounting hole is formed in the mounting seat, the fixing bolt used for fixing the supercharger is mounted in the mounting hole, the loosening mechanism comprises a rotating rod and a limiting pressing plate, the rotating rod is rotatably mounted on the mounting seat, the limiting pressing plate is fixedly mounted on the rotating rod, and the limiting pressing plate is fixedly mounted on the rotating rod. The limiting pressing plate makes contact with the top of the fixing bolt, and a rotating groove is formed in the mounting base. The fixing device is reasonable in design, the supercharger can be fixedly installed through the fixing bolt, the fixing bolt can be prevented from loosening through the limiting pressing plate, and therefore the purpose of improving the stability of the supercharger can be achieved.

The invention provides an intelligent driving and energy optimizing system for a parallel hybrid heavy truck, which relates to the field of hybrid heavy trucks and comprises a power battery, a motor, a gas engine, a controller and a sensor. The sensor collects vehicle operation parameters in real time, and the controller controls the working state of each component according to the parameters. The system has various working modes of pure electric starting, engine intervention control and the like, and has the advantages that the problem that an existing hybrid heavy truck is poor in power coordination is solved through precise cooperation of the sensor and the controller, the energy utilization efficiency is improved through the multiple working modes, pure electric starting, reasonable engine intervention and a battery charging strategy are achieved, and the energy utilization efficiency is improved. Energy waste is avoided, energy consumption is reduced, driving modes are intelligently switched, the system adapts to different road conditions and loads, it is guaranteed that power is strong, kinetic energy is recovered by a motor when an energy recovery system goes down a slope, the kinetic energy is assisted by a gas engine when the kinetic energy is insufficient, the energy utilization rate is greatly increased, the driving mileage is prolonged, and energy conservation and consumption reduction are achieved.

The utility model relates to the technical field of engines, and discloses a mixer turbulent flow structure, a mixer and a gas engine, the mixer turbulent flow structure comprises an annular shell and a column core, the column core is located in a space defined by the annular shell, and the column core and the annular shell are coaxially arranged; a plurality of turbulent flow blades are connected between the annular shell and the column core, the annular shell and the column core play a role in supporting the turbulent flow blades, and the turbulent flow blades are arranged around the column core so as to turbulent flow mixed gas of passing fuel gas and air in all directions, so that the mixing uniformity of the mixer is better; at least part of the turbulent flow blades spirally extend around the column core, the spirally-extending turbulent flow blades can enable mixed gas to form turbulent flow, turbulent flow pulsation kinetic energy is increased, the collision opportunity of air and fuel gas in the flowing process is increased, the mixing capacity is improved, and therefore the mixing uniformity of the mixed gas is improved.

The utility model belongs to the technical field of engines, and particularly relates to an anti-seismic structure of a high-power vehicle-mounted gas engine unit, which comprises a high-power vehicle-mounted gas engine unit body, and a fixing seat and a mounting seat which are used for performing anti-seismic use on the high-power vehicle-mounted gas engine unit body, four grooves and four sliding grooves are formed in the top of the mounting seat, first anti-seismic units are arranged among the grooves, the mounting seat and the fixing seat, and second anti-seismic units are arranged among the sliding grooves and the fixing seat. The high-power vehicle-mounted gas engine unit is reasonable in structural design, vibration generated by the high-power vehicle-mounted gas engine unit body can be subjected to multiple damping counteracting under the combined action of the damping steel plate, the four first anti-seismic units and the four second anti-seismic units, the anti-seismic effect is better, the operation stability of the high-power vehicle-mounted gas engine unit body is guaranteed, and the service life of the high-power vehicle-mounted gas engine unit body is prolonged. The service life is prolonged, and the reliability is high.

The invention discloses a gas engine cold start difficulty diagnosis method, system and device and a readable storage medium, and relates to the field of cold start fault detection, and the method specifically comprises the steps: determining an initial idle speed segment based on a real-time vehicle speed, a real-time engine rotation speed, a neutral gear signal and a clutch signal when the lowest environment temperature is detected to be smaller than a preset environment temperature threshold value; the initial idling segment is a working state when the vehicle is static and an engine is in an idling mode; in the initial idle speed segment, based on the maximum value of the engine rotating speed, the real-time engine rotating speed, the real-time gas rail pressure, the real-time gas rail temperature, the engine water temperature at the starting point of the initial idle speed segment, the real-time accelerator opening degree and the fault code, the cold start difficulty result of the gas engine is determined; the fault code is a corresponding fault code when the pressure of the intake manifold is smaller than a preset pressure threshold value of the intake manifold. According to the invention, specific faults of cold start difficulty can be identified efficiently and accurately.

The invention discloses a method and device for calculating pressure after air filtration and a gas engine. The accuracy of pressure calculation after air filtration can be improved. The method for calculating the post-air-filtering pressure comprises the steps that at the starting node of a target driving cycle, the first pressure difference between the gas inlet pressure and the post-air-filtering pressure is obtained; in the driving process of the target driving cycle, a second pressure difference between the gas inlet pressure and the air-filtered pressure is obtained; based on the first pressure difference and the second pressure difference, a pressure difference change value is obtained; wherein the pressure difference change value comprises a difference value between the first pressure difference and the second pressure difference; and the pressure difference change value serves as the pressure after air filtering, and the absolute pressure after air filtering is obtained.

The present invention pertains to arrangements for a pre-chamber of a combustion engine as well as pre-chambers comprising such arrangements, in particular to avoid or impair backfiring or flashbacks of a combustible mixture and / or to enable a flame retardation within a respective pre-chamber. Accordingly, an arrangement for a pre-chamber gas valve of a combustion engine, preferably a gas engine, is suggested, which comprises a housing having an outer surface and comprising a channel, wherein a first end of the channel is in fluid communication with the outer surface and a second end of the channel is connectable to a valve seat of the pre-chamber gas valve. The arrangement furthermore comprises a plurality of protrusions extending radially outward from the outer surface of the housing. The first end of the channel is arranged upstream of the second end of the channel and downstream of the protrusions, wherein the protrusions are spaced apart from each other in a circumferential direction and define a respective cavity between respective adjacent protrusions, each cavity having an extension being larger in a radial direction and / or axial direction than an extension in the circumferential direction.

The invention relates to a control method and device of a power supply system and the power supply system. The method comprises the steps that under the condition that an energy storage unit is in a rechargeable state, the output power of a gas turbine power generation unit is adjusted according to the output power condition of the gas turbine power generation unit and the operation state of a standby power generation unit, so that charging of the energy storage unit is completed; according to the method, under the conditions that the energy storage unit is in the rechargeable state and the current output power of the gas turbine power generation unit is smaller than the rated output power, the waste heat utilization technology is adopted, and the standby power generation unit can be charged according to the operation state of the standby power generation unit. And the output power of the gas turbine power generation unit is adjusted according to the difference value between the current output power and the rated output power of the gas turbine power generation unit, so that the energy storage unit is charged, and the power supply stability is improved.

The present application relates to the technical field of engine, and discloses a combustion system, a gas engine and a combustion system design method, a second fuel injection hole sprays an oil jet to ignite a part of natural gas jets on the same side of the second fuel injection hole, and under the action of a vortex in a combustion chamber, with the second fuel injection hole continuously spraying the oil jet, a flame formed by the oil jet igniting the natural gas jets gradually becomes longer along the vortex direction, so that the oil jet sprayed by the second fuel injection hole ignites the natural gas jets on the side of the natural gas injector opposite to the fuel injector; the oil jet sprayed by the first fuel injection hole ignites the remaining natural gas jets, so that the oil jets sprayed by the fuel injector on both sides of a reference line can achieve the maximum ignition effect, all the natural gas jets are ignited by using the least oil jet, the ignition effect of igniting the natural gas by using the fuel is improved, the thermal efficiency is higher, and the emission is lower.

The invention provides a gas engine lubricating oil composition and a preparation method thereof. The gas engine lubricating oil composition of the present invention comprises: (A) an alkyl phosphate compound; (B) alkylated diphenylamine; (C) a polyisobutylene succinic acid pentaerythritol ester dispersing agent; (D) a salicylate and / or sulfonate; (E) zinc dialkyl dithiophosphate; (F) an oil-soluble organic molybdenum friction modifier; (G) a metal corrosion inhibitor; (H) a pour point depressant; (I) a major amount of a lubricating base oil. The gas engine lubricating oil composition disclosed by the invention has excellent high-temperature oxidation resistance, cleaning performance, extreme pressure anti-wear performance and anti-corrosion performance.

The invention discloses a comprehensive energy supply system based on a gas engine residual smoke hydrogen energy storage system, and relates to the field of energy supply. The total smoke exhaust amount of a gas engine is calculated, and the first smoke amount needed by a cold and hot water unit is calculated; when the total smoke exhaust amount of the gas engine is smaller than or equal to the first smoke amount needed by the water chiller-heater unit, all smoke is guided into the lithium bromide absorption water chiller-heater unit; if the first smoke amount is larger than the first smoke amount needed by the lithium bromide absorption type cold and hot water unit, the remaining smoke is guided into a remaining smoke boiler to be used for generating water vapor; determining the amount of second flue gas discharged from the hydrogenation reaction combustion furnace and entering the residual smoke boiler, calculating the total smoke inlet amount of the residual smoke boiler, calculating the required natural gas raw material amount according to the water vapor mass flow and the total carbon flow in the natural gas, and introducing the natural gas into the hydrogenation reaction combustion furnace according to the natural gas raw material amount. The natural gas reforming hydrogen production equipment, the waste smoke boiler, the gas engine and the like are integrated for cold, heat and electricity triple co-generation and can be directly applied to building energy supply, and effective cyclic utilization is formed.

The application belongs to the technical field of lubricating oil, and specifically provides a gas engine lubricating oil and a preparation method thereof.The gas engine lubricating oil comprises the following raw materials: ester base oil, anti-wear agent, dispersant, pour point depressant and antifoaming agent, wherein the ester base oil is prepared by esterification reaction of polyhydric alcohol and fatty acid; the preparation method of the anti-wear agent comprises the following steps: first, reacting acrylic acid with vinyl imidazole to prepare a modifier; then, polymeric phenol is obtained by polymerization of phenol under the action of a catalyst; finally, the polymeric phenol, boric acid and vegetable oil are reacted, the modifier is added after a certain time of reaction, and the reaction is continued to obtain the anti-wear agent.The preparation method of the gas engine lubricating oil of the application is that the raw material components are uniformly mixed according to the formula, and the gas engine lubricating oil of the application has good wear resistance, oxidation resistance, high-temperature detergency and thermal stability.

A gas engine system (1) according to one embodiment of the present invention comprises: a reciprocating engine for supplying air through an air supply path using gas obtained by gasifying liquefied gas as a fuel; a liquid air generator (5) that generates liquid air by means of cooling when the liquefied gas is gasified; and a nitrogen gas supply path (71) for supplying nitrogen gas obtained by vaporizing liquid nitrogen in the liquid air to the gas supply path. For example, the liquefied gas is liquefied hydrogen.

The present application relates to a deflagration venting device, a gas engine, and a generator set, and relates to the technical field of engines. The deflagration venting device includes a deflagration venting valve. A blocking assembly is provided on one side of the deflagration venting valve. The blocking assembly includes a blocking box. The deflagration venting valve communicates with the blocking box. Connecting pipes are provided on opposite side walls of the blocking box, and the connecting pipes communicate with the blocking box. A blocking block is provided in the blocking box. The blocking block is slidably connected to the inner wall of the blocking box along the axial direction of the connecting pipe. One side of the blocking block is spaced from the corresponding inner side wall of the blocking box. When the blocking block slides in the blocking box to one side of the blocking box, the blocking block closes the corresponding connecting pipe. The generator set uses a gas engine equipped with the deflagration venting device. By providing the blocking assembly and the deflagration venting valve, when deflagration occurs, the blocking assembly can cut off the gas transmission pipeline, and the deflagration venting valve can vent the high-pressure gas generated in the blocking box, thereby improving the safety of the equipment.

The application discloses a kind of single-shaft combustion engine natural gas filter filter core cleaning device, it is related to filter core cleaning technical field, including support seat and top frame, first runner and cleaning assembly are rotatably installed on the support seat, drum is installed on first runner, support assembly is arranged below first runner, cleaning pipe is installed above the drum, spray hole is opened in cleaning pipe, drive assembly is installed on the top frame, first magnetic block is connected below drive assembly, copper pipe is arranged on the outside of first magnetic block, second magnetic block and support ring are respectively arranged on the upper and lower sides of copper pipe, third magnetic block is fixedly connected on the inner wall of support ring, third motor is installed on support ring, first docking block is connected on the output shaft of third motor.The application solves the problem that the existing filter core cleaning device cannot automatically activate the vibration structure to vibrate the filter core to improve the cleaning effect during cleaning, and cannot reduce the transmission of ineffective vibration energy during cleaning.

Disclosed herein is a work machine having a gas engine and a gas storage system having at least one gas storage tank. The controller is provided with a controller configured to determine a leakage condition within the gas storage system and / or the gas engine.