59results about How to "Control air intake" patented technology

The invention discloses two-staged turbocharging system testing device and testing method. The components of an analogue turbocharging system are as follows: the outlet of an air compressor for simulating exhaust flow of an engine is sequentially connected with a filtering tank, a laminar flow meter, an intake control valve, a surge tank, a heater, an intake pressure regulating valve and high- and low-pressure turbines to empty; a branch pipe of an inlet pipe of the filtering tank is provided with a vent valve; a vortex side bypass-valve is connected between the inlet and the outlet of the high-pressure turbine; the outlet of a low-pressure gas compressor is sequentially connected with an intercooler, a high-pressure gas compressor, a second intercooler, a second surge tank, a second laminar flow meter and a back pressure regulating valve and then outputs pressurized air; a pressure side bypass valve is connected between the inlet and the outlet of the high-pressure gas compressor. The gas temperature, pressure and flow are adjusted in a plurality of manners; the pre-vortex pressure and the temperature gradient are tested by transient pressure and temperature sensors; theoretical basis and data support are provided for a transient control strategy.

The invention discloses a detection device for detecting air tightness of an air-tight door of a nuclear power plant by using a constant pressure method. The detection device comprises an air tightness testing box body and a testing system, wherein a testing opening is formed in the air tightness testing box body; a tested part is arranged on the testing opening; the testing system comprises a digital adjuster; a flexible sealing glue ring is cast between the testing opening and the tested part; an air inflation cavity is defined by a sealing ring, the testing opening, the tested part and the sealing glue ring jointly; the digital adjuster is used for adjusting the opening of a pneumatic adjusting valve and the opening of an inflation control valve according to the air pressure tested by a pressure transmitter to enable the air pressure inside the air tightness testing box body to be equal to the designed pressure intensity of the tested part and enable the air pressure inside the air inflation cavity to be approximate to that inside the air tightness testing box body. The detection device has the advantages that the structure is simple, the use is convenient, the automation degree is high, the air tightness of the tested part can be calculated quantitatively, and the leakage of non-testing gases is reduced.

The invention discloses a gear shifting manipulator of an automobile synchronizer testbed and a control device of the gear shifting manipulator. The gear shifting manipulator comprises a mounting bottom plate and a four-bar mechanism which is formed by hinge joint of a gear selecting shaft, a gear shifting rocker arm, a middle connecting bar and a gear shifting support bar, the gear selecting shaft is rotatably mounted on the mounting plate, an output shaft of a gear selecting motor is in transmission connection with the gear selecting shaft, a gear shifting air cylinder is hinged between the gear selecting shaft and the gear shifting rocker arm, a gear shifting connection bar is hinged to the upper end of the gear shifting support bar, and a tensile pressure sensor and angle sensors are arranged on the four-bar mechanism respectively. The control device comprises an MCU (micro control unit) and a human-computer interface LCD (liquid crystal display). The gear shifting manipulator is electrically connected with the MCU via the tensile pressure sensor and the angle sensors. The MCU is electrically connected with a gear shafting electromagnetic valve of the gear shifting air cylinder and the gear shifting motor. The human-computer interface LCD is in communication connection with the MCU. The gear shifting manipulator of the automobile synchronizer testbed and the control device of the gear shifting manipulator have the advantages of simplicity in operation, high positioning precision, precise controllability, stability in operation and capability of simulating a gear shifting effect of a human hand better.

The invention discloses a device and method for detecting the combustion characteristic of tail gas containing high-concentration CO. The device consists of a gas distribution induction system, a combustion system, a data acquisition processing system and a smoke discharge system. In the invention, a combustion chamber of the combustion system adopts a heat-insulation combustion mode, and a good heat insulation effect is realized; the system is uniform and stable; as the smoke discharge system is arranged in the device, the safe operation of the detection is ensured; research on the combustion characteristic of the tail gas with different CO components can be performed, and the research on the combustion characteristic of the tail gas can be performed in laboratories and production practice; and the device has the advantages of high feasibility, flexible detection mode, simple process, high safety, good stability and the like, and can be used for controlling the air input and air ratio.

The invention discloses a valve stroke variable adjusting system, which comprises a valve mechanism, a valve transmission set, a hydraulic gap adjustor and an adjustor power source, wherein the valve transmission set consists of a rocker arm bearing, a finger-shaped rocker arm and a camshaft; the camshaft is fixed on an engine cylinder through a bearing; one end of the finger-shaped rocker arm is provided with an arc groove and is in contact connection with the head of a plunger of the hydraulic gap adjustor; the middle section of the finger-shaped rocker arm is provided with the rocker arm bearing which is in rolling contact with the camshaft; the other end of the finger-shaped rocker arm is finger-shaped and presses a valve; and the camshaft rotates to drive the finger-shaped rocker arm to swing around the head of the plunger so as to control the valve to open or close. A step motor drives the hydraulic gap adjustor to move and the opening of the valve is changed, so that the air inflow is controlled, and the fuel efficiency is improved. The rocker arm bearing can reduce the impact and vibration in the transmission process and reduce noise.

The invention discloses an air inlet passage and impeller gap adjusting structure. The structure comprises a volute, an air inlet passage, an impeller, a displacement sensor, a servo screw motor and anut, wherein the air inlet passage is arranged in an inner hole of the volute, a certain gap is kept between the air inlet passage and the impeller, the air inlet passage is coaxial with the volute and the impeller, the displacement sensor is arranged in the air inlet passage, the nut is arranged on the air inlet passage, the servo screw motor is arranged on the upper end face of the volute, andthe outer end of a screw of the servo screw motor is connected with the nut. According to the structure, the motor forward and reversely rotates to drive the nut to ascend or descend, the nut drives the air inlet passage to ascend or descend, the ascending gap of the air inlet passage becomes large, and the descending gap of the air inlet passage becomes small, so that the air inlet amount is controlled, the surge of a system is controlled, and the structure is simple and effective.

The invention relates to the field of automobile accessory manufacturing, in particular to a cross-shaped shaft grinding and clamping device. The cross-shaped shaft grinding and clamping device comprises a machine tool main shaft and a machine tool guide rail. The machine tool main shaft is fixedly connected with a cross-shaped shaft clamping structure. The cross-shaped shaft clamping structure comprises an installing base, a positioning assembly and clamping assemblies. The installing base is provided with an installing hole, grooves are formed in the side wall of the installing hole, and theclamping assemblies are arranged in the grooves. Each clamping assembly comprises a wedged block, a clamping block, a fixing rod, a swinging rod, a first movable rod and a second movable rod, whereinthe first movable rod and the second movable rod are provided with reset springs between the inner walls of the corresponding groove. A tail base is fixedly connected to the machine tool guide rail and comprises a pneumatic tip, a drive assembly and a sliding sleeve. The drive assembly is located on one side of the tail base and used for driving the pneumatic tip to horizontally move, and the tail base is further provided with a cross-shaped shaft rotation structure making the cross-shaped shaft rotate. The cross-shaped shaft grinding and clamping device can automatically clamp the cross-shaped shaft, and the cross-shaped shaft machining efficiency is improved.

The invention discloses a transformer oil gassing device which comprises a sampler, a quantifying pipe, a vacuum chamber, a pneumatic chamber, a compressor, a fixed gas valve and a pressure controller, wherein the upper end of the sampler is connected with a transformer through an oil inlet valve, and the lower end of the sampler is connected with the upper end of the vacuum chamber through a degassing communicating valve; the upper end of the vacuum chamber is connected with the transformer through an air cylinder valve and an oil discharge valve, and the lower end of the vacuum chamber is matched with the pneumatic chamber through a piston rod; the outer end of the quantifying pipe is connected with a carrier gas valve, and the inner end of the quantifying pipe is connected with the vacuum chamber; the pressure controller is connected with the gas outlet of the compressor, the inlet end of the fixed gas valve is connected with the pressure controller, and the outlet end of the fixed gas valve is connected with the pneumatic chamber through an air cylinder upward valve and an air cylinder downward valve. According to the transformer oil gassing device, an oil pump is eliminated, so that the equipment cost is greatly reduced; due to the elimination of the oil pump, the oil getting way is changed, the forced oil circulation is no longer used, instead an oil sample in an oil inlet pipeline is extracted by the vacuum chamber, oil is discharged after being separated from gas, and a new oil sample is obtained.

The invention discloses an air inlet system of an LNG natural gas engine. The air inlet system comprises an air supply subsystem, an LNG natural gas supply subsystem and a mixer, wherein the air supply subsystem comprises an air filter, an exhaust gas turbocharger, an intercooler and an electronic throttle valve which are connected sequentially, and the electronic throttle valve is used for controlling the air supply amount after cooling; the LNG natural gas supply subsystem comprises an LNG gas bottle, a vaporizer, a voltage stabilizer, a buffer tank, a lower pressure filter, a lower pressure fuel stop valve and an electronic control gas track assembly which are connected sequentially, LNG enters the electronic control gas track assembly for accurate control after vaporization, voltage stabilization, buffering and filtering, the mixer is used for mixing air flowing through the electronic throttle valve and natural gas flowing out of the electronic control gas track assembly and then supplies the mixture to an inlet branch pipe, and the inlet branch pipe is communicated with an inlet valve of an engine cylinder. The air inlet system can accurately and safely control the natural gas and the air, and the air inlet requirement of the LNG natural gas engine can be met.

The invention discloses a plastic film unfolding frame. The plastic film unfolding frame is mainly composed of an opening device, a cutter, a cutter supporting column, a circular truncated cone unfolding device, an air inlet pipe, a supporting frame, an unrolling roller and a rolling roller all of which are arranged in a line shape. The cutter is located at the middle position of the opening device. The opening device is in a tongue shape and is fixedly connected with the circular truncated cone unfolding device. The front end of the opening device is provided with air holes, and the surface of the circular truncated cone unfolding device is provided with air holes. The circular truncated cone unfolding device is fixed to the supporting frame. The supporting frame is provided with slidingrails. The air inlet pipe is connected to the rear part of the unfolding device. The unrolling roller is located in front of the opening device and is parallel to the opening device and guides a plastic film to enter the unfolding frame, and the purpose of blowing the double-layer film can be achieved through ventilation of the air holes in the front end. By means of the plastic film unfolding frame, same journey in the unfolding process of the film parts can be guaranteed, meanwhile, the contact area of the film and the unfolding frame is reduced through an air film, the problem caused by being pulled of the film in the process is avoided, and the quality level of the film is improved.

The invention discloses a thermal treatment furnace for steel wires, and relates to the technical field of thermal treatment of the steel wires. The front of a heating section is arranged to be of a hot air type structure, a front nozzle is a hot air nozzle, and the input end of the nozzle is connected to air pipes and gas pipes; the rear of the heating section is arranged to be of a premixing type structure, a rear nozzle is a premixing nozzle, and the air pipes and the gas pipes are connected to a pre-mixer and then are connected to a premixing nozzle through mixed gas pipes; a furnace body is provided with a discharge flue, and the discharge flue is provided with an induced draft fan. When the external atmospheric pressure changes, the induced draft fan still can maintain certain gas displacement, and therefore smoke inside the furnace can become stable, the atmospheric pressure can keep stable, and the thermal treatment effect of the steel wires can be guaranteed. In addition, the hot air type structure and the premixing type structure are matched, the furnace atmosphere can be accurately controlled, the oxidation degree of the steel wires can be lower, the waste heat of the smoke can be fully utilized, and the energy utilization rate can be increased.

The invention discloses a composite membrane bioreactor with low energy consumption. The composite membrane bioreactor includes a reaction tank. Four corners of the outer wall of the bottom of the reaction tank are respectively provided with vertically-arranged support columns by bolts; the outer walls of the bottoms of the support columns are provided with supporting seats by the bolts; a same horizontally-arranged support plate is disposed among the four support columns by the bolts; the outer wall of the top of the support plate is provided with a water tank by the bolts; the outer wall ofone end of the water tank is provided with a water outlet pipe through a bolt; and the top of the inner wall of one side of the water tank is provided with a liquid level sensor through the bolt. Thecomposite membrane bioreactor performs a composite membrane biological reaction in the reaction tank; aeration is performed through an aeration head connected with an aeration draught fan; and a dissolved oxygen instrument is installed, the oxygen concentration of wastewater in the reaction tank is detected at any time, and the dissolved oxygen instrument is connected with an electromagnetic valvethrough a processor, and therefore, the air input of an aeration pipe is controlled, resources are rationally utilized, and the energy consumption of the composite membrane biological reaction is reduced.

The invention discloses an intelligent self-adaptive pressure swing adsorption nitrogen making machine. The nitrogen making machine comprises a nitrogen making machine body, an air compressor, a nitrogen purification device and a nitrogen storage box. A gas inlet of the nitrogen making machine body is fixedly connected with a first connecting pipeline; the other end of the first connecting pipeline is fixedly connected with the gas outlet end of the air compressor; a connecting branch pipe is fixedly connected to the side face of the first connecting pipeline; a pressure detector is fixedly connected to the top of the connecting branch pipe; a first flow limiting control valve is arranged at the position, close to the nitrogen making machine body, of the side face of the first connecting pipeline; and the gas outlet end of the nitrogen making machine body is connected with the nitrogen purification device through a pipeline. According to the nitrogen making machine, flow limiting control valves are arranged at the two ends of the nitrogen making machine, and the pressure detector is further arranged on one side of the first flow limiting control valve, so that the gas inlet amountand the gas outlet amount of the nitrogen making machine can be well controlled, and the purity of the nitrogen making machine can be guaranteed.

The invention discloses an exhaust assembly of a water-drive and non-electric exhaust fan. The exhaust assembly comprises an exhaust shell and an exhaust inner cylinder. The lower end of the exhaust inner cylinder is cylindrical, and the upper end of the exhaust inner cylinder is conical. The upper layer of the exhaust inner cylinder is provided with a fixing blade which is connected with the exhaust shell, and the lower layer of the exhaust inner cylinder is provided with a guide wheel blade which is connected with the exhaust shell. An impeller is driven to rotate through circulating of circulating fire fighting water in a ship body. The shape of concave blades in a turbine shell is improved, and therefore the conversion rate of water kinetic energy is improved, exhaust wind pressure is improved accordingly, and the ventilation distance of air in the ship body can be effectively increased by 30 meters.

The invention relates to an integrated stepping water-feeding type multistage A/O intensifying denitrification device. A tank is arranged as three-layer and more coaxial cylinders or cuboids; an inner layer chamber is communicated with the bottom of a middle layer chamber, so as to form a hydrolysis acidification tank; folded plates are arranged in an outer layer chamber, so that the outer layer chamber is separated into six and more cabinets; all the areas of the outer layer chamber are filled with floating balls, so as to form a multi-stage baffling floating biochemical tank; the hydrolytic acidification effluent flows into an O1 aerobic zone, an A1 anoxic zone, an A2 anoxic zone and an A3 anoxic zone under the effect of gravity in a stepping water-feeding manner; the effluent flows out from an effluent weir at the upper end of the last stage of aerobic zone. The invention adopts the integrated stepping water-feeding type multistage A/O intensifying denitrification device, with a multilayer coaxial cylinder or cuboid structure combined with anaerobic catalytic oxidation, stepping water feeding and multi-stage baffling floating biochemistry; the treating process is free from the mixed liquor backflow, sludge backflow and back wash operation processes; the required mechanical equipment is few; the operation management is simple; the unattended operation can be realized.

The invention discloses a wire coil capable of intelligently and automatically distributing a bundling rope by using a wire roller for a large-scale distribution box. The wire coil comprises a fixed base, wherein a base groove is formed in the fixed base; a first support disc connected to the fixed base is arranged in the base groove; a first rotary shaft which is driven by a motor is arranged in the base groove; a rotating second rotary shaft and a third rotary shaft are arranged on the first support disc; a rotating wire distribution rotary disc is arranged on the fixed base; wire distribution sliding blocks corresponding to support cylinder through grooves are arranged on a second support disc; wire distribution cylinders are respectively arranged on the wire distribution sliding blocks; sliding bundling ropes are respectively arranged in the wire distribution cylinders, and the wire distribution cylinders can be further clamped on the cables through sliding the wire distribution sliding blocks, so that the cables are further bundled by utilizing the bundling rope, the trouble caused by manually penetrating and inserting the bundling ropes is avoided, and the working efficiency can be further improved.

The invention relates to the technical field of glass production, in particular to a blowing device for glass manufacturing. The device comprises four supporting legs, wherein the tops of the four supporting legs are fixedly connected with a base; an isolation plate is fixedly connected to the top of the base and close to the center of the right side; a through groove is formed in the center of the inner wall of the isolation plates a placement plate is fixedly connected to the center of the top left side of the base; a groove is formed in the center of the top of the storage plate; an airbagis fixedly connected to the left side of the inner wall of the groove. Through the air bag and the connecting pipe,a worker can press the air bag so that air in the air bag is exhausted, enters a sleeve from a rubber hose and finally enters a glass product, and therefore blow molding is conducted on the glass product, the traditional manual blow molding mode of the glass product is replaced, manual labor is reduced, and meanwhile the air inflow of the glass product can be accurately controlled through the air bag.

The invention relates to the technical field of unmanned aerial vehicles, in particular to an electronic injection valve body assembly and an unmanned aerial vehicle. The electronic injection valve body assembly comprises an electronic injection valve body, a throttle valve shaft is rotationally arranged in the electronic injection valve body, and a throttle valve blocking piece used for adjusting the opening degree of an electronic injection valve is fixedly arranged on the throttle valve shaft; and the steering engine shell is connected with the electronic injection valve body in a sealed mode, a steering engine is fixedly arranged in the steering engine shell, and the steering engine is connected with the throttle valve shaft through a transmission structure. According to the arrangement mode, the steering engine is arranged in the steering engine shell, and the steering engine shell is hermetically connected with the electronic injection valve body, so that water and dust can be prevented, and the reliability of the engine is improved. Meanwhile, the steering engine directly drives the throttle valve shaft to rotate through the transmission structure, the response speed of the throttle valve can be increased, and the air inflow of the engine can be more accurately controlled.

The invention relates to the technical field of engines, and provides an engine control method and device. The engine control method comprises the steps that the rotating speed and the load of an engine are detected; whether a variable valve timing mechanism of the engine meets an actuation condition or not is judged; when the variable valve timing mechanism does not meet the actuation condition, the common air-fuel ratio of the engine is controlled to be reduced according to the rotating speed and the load of the engine so as to obtain a first air-fuel ratio; and the engine is controlled to operate at the first air-fuel ratio. The engine performance can be improved.