42results about How to "Stable gas flow" patented technology

The invention discloses a numerical control gas burner, which comprises a gas valve set, a gas metering unit, a blower, an igniter, a flame detector and a highly intelligent numerical control system. When the numerical control gas burner is operated, the highly intelligent numerical control system presets flame openness of the burner to control the gas valve set to output gas flow adapting to the flame openness according to manual instructions and feedback signals such as temperature, pressure or the like; and the highly intelligent numerical control system calculates and adjusts rotation speed of the blower to ensure constant output of best air distribution of the blower in large-range flame adjustment according to gas flow and air-fuel ratio provided by the gas metering unit. The highly intelligent numerical control system is completely different from special controllers for conventional gas burners, and is capable of monitoring and recording the whole combustion process and important parameters of a controlled object at any time, capable of sending acoustic, optic and text warnings in case of failure, and capable of automatically controlling the burner to take corresponding measures to ensure absolute security of personnel and equipment according to severity of the failure.

The invention relates to an upper air feeding burner. The upper air feeding burner is characterized by comprising a burner base, an upper base cover, an inner burner cap seat, an inner burner cap, an inner injection pipe, an outer burner cap seat, an outer burner cap and an outer injection pipe; a base cavity is formed in the burner base, an inner ring air inflow channel and an outer ring air inflow channel are arranged in the burner base, the inner ring air inflow channel is provided with an inner ring nozzle, and the outer ring air inflow channel is provided with an outer ring nozzle; an air supplementing inlet is formed in the upper base cover; the inner burner cap seat is arranged on the upper base cover; an inner burner cap hole is formed in the inner burner cap and an inner ring gas channel is defined by the inner burner cap and the inner burner cap seat; one end of the inner injection pipe is opposite to the inner ring nozzle and the other end of the inner injection pipe is communicated with the inner ring gas channel; the outer burner cap seat is arranged on the upper base cover; an outer burner cap hole is formed in the outer burner cap, an outer ring gas channel is defined by the outer burner cap and the outer burner cap seat, and an air supplementing inflow channel is defined between the upper base cover and the outer burner cap seat; and one end of the outer injection pipe is opposite to the outer ring nozzle and the other end of the outer injection pipe is communicated with the outer ring gas channel. The upper air feeding burner is simple in structure and high in burning efficiency.

The invention discloses an electrolytic hydrogen fuel bi-motor. The electrolytic hydrogen fuel bi-motor comprises a water tank, an HHO generator, a motor and a constant-current pulse width regulator which is used for controlling current flowing into the HHO generator, wherein a liquid outlet I, a liquid inlet I and a gas vent are formed in the water tank; the HHO generator comprises multiple white steel sheets arranged in a sealed shell and an upper cover and a lower cover which press the multiple white steel sheets tightly; the multiple white steel sheets are arranged in a stacked manner; each white steel sheet is provided with a through hole I and a through hole II; a high temperature-resistant insulation pad is arranged between every two adjacent white steel sheets; and a cross-shaped through hole is formed in each high temperature-resistant insulation pad. The invention further discloses a use method of the electrolytic hydrogen fuel bi-motor. According to the electrolytic hydrogen fuel bi-motor, hydrogen generated through electrolysis of electrolyte is used as fuel of the motor in an electrolysis manner; the fuel saving rate can reach 20%-35%; the electrolytic hydrogen fuel bi-motor is applicable to various large, medium and small automobiles, steamships, small fishing vessels, fixed diesel engines, unmanned aerial vehicles and the like; and the electrolytic hydrogen fuel bi-motor is not limited by various automobiles or gasoline and diesel vehicles.

The invention provides a modified compressor air pumping casing. The modified compressor air pumping casing comprises a compressor casing body and an air pumping casing body; the air pumping casing body sleeves the compressor casing body; a casing channel is formed in the circumferential direction of the side wall of the compressor casing body and penetrates through the side wall of the compressorcasing body; the compressor casing body communicates with the air pumping casing body through the casing channel; and the casing channel is shaped like a complex linear periodic repeatedly-composed circumferential curve. According to the modified compressor air pumping casing, the shape of a traditional circumferential symmetric air pumping casing body is changed into the complex linear periodicrepeatedly-composed circumferential curve from a circumferential straight line surrounding the outer wall of the compressor casing body, so that the on-way resistance of migration of air mass in the circumferential direction of an air pumping channel can be increased, the obstruction effect on the low-pressure separated air mass pumped away from a compressor passage due to the migration of the high-pressure airflow in the circumferential direction of an air pumping channel seam can be weakened, the flow separation can be relieved more easily, the surge phenomenon caused by the intensified rotating stall of gas in the compressor casing body can be effectively avoided, and a gas turbine can be started more stably and safely.

A wiping device has a wiping section that relatively moves along the nozzle surface, and the wiping section has: a curved surface in which a bulge is continuously formed along the identification line; a guiding section disposed such that the bulge faces the nozzle surface; a gas jetting port that applies gas to the curved surface; and a gas suction port that sucks the gas ejected from the gas jetting port and guided along the curved surface, wherein, as viewed from the direction perpendicular to the nozzle surface, the identification line which is the set of upper end points on the bulge on the curved surface intersects with the edges of the nozzle surface at an oblique angle.

The invention provides an oxidation air uniform-distribution device for calcium desulphurization. The device comprises an air feed main pipe, a plurality of air feed branch pipes and a connecting pipe, wherein each of the air feed main pipe and the air feed branch pipes is a straight pipe with two open ends, the vertical axis of each air feed branch pipe is perpendicular to the vertical axis of the air feed charge, the connecting pipe is an annular pipe, one open end of the air feed main pipe is an air inlet end, the other open end of the air feed main pipe is communicated with the connecting pipe, every two adjacent air feed branch pipes are arranged in parallel at an equal interval, one open end of each air feed branch pipe is communicated with the air feed main pipe, the other open end of each air feed branch pipe is communicated with the connecting pipe, and the sidewall of each air feed branch pipe is uniformly provided with oxidation air jet holes. The uniform-distribution device provided by the invention enables air flow and air pressure of air flowing through each air jet hole to be more uniform and more stable, thereby improving the oxidation effect of calcium sulfite and the utilization rate of oxidation air.

Provided is apparatus for controlling flow rate of gases used in semiconductor device by differential pressure by generating differential pressure in a fluid path. A differential pressure generation element generates pressure difference in the fluid path of gases used in semiconductor device fabrication, a pressure, sensor which is installed at a bypass of the fluid path detects the pressure difference, and a central processing unit (CPU) measures and controls a flow rate of the gases, thereby the present invention is capable of controlling the flow rate precisely and rapidly, and enhancing the degree of purity of the gases by the filtering function of the differential pressure generation element itself.

The invention discloses a fermented tail gas purification treatment method, and belongs to the field of comprehensive treatment of industrial tail gases. The fermented tail gas purification treatment method comprises treatment steps of pretreatment, molecular sieve treatment, catalytic oxidation, alkali washing, secondary oxidation and water washing. According to the fermented tail gas purification treatment method, a cyclone separator, a primary filter, a condenser and a heater are adopted to pretreat a fermentation tail gas firstly, secondly, the fermentation tail gas is concentrated by using a honeycomb disc rotating wheel type molecular sieve, then the fermentation tail gas is subjected to oxidation decomposition in a high-temperature catalytic oxidation device, and finally through absorption of an alkali washing spraying tower, an oxidation spraying tower and a water washing spraying tower in sequence, residual harmful substances in the fermentation tail gas can be completely removed. By adopting the fermented tail gas purification treatment method, use of the spraying towers and absorption liquids can be greatly reduced, the tail gas treatment cost can be lowered, in addition, high treatment efficiency and a good purification effect can be achieved, and the fermentation tail gas can be in safe up-to-stand discharge.

The invention discloses a plasma film-forming device. The plasma film-forming device comprises a film-forming chamber, a plasma generator arranged in the film-forming chamber, and a gas supply system used for providing a gas for the film-forming chamber, wherein the plasma generator sprays a plasma jet flow and forms a plasma jet flow area. The plasma film-forming device further comprises a plurality of gas flow-carrying plates rotationally arranged around the plasma generator, wherein the gas supply system supplies the gas for the gas flow-carrying plates, and the gas is jetted to the plasma jet flow area via the gas flow-carrying plates; and the shape of the plasma jet flow area can be changed by rotating the gas flow-carrying plates. The film plated by the plasma film-forming device is high in deposition efficiency and few in spark phenomenon while being high in compactness and good in uniformity.

The invention discloses a gas flowmeter and a medical device with the same. The gas flowmeter comprises a cavity internally provided with a gas flow chamber, a magnetic throttling member which is arranged in the gas flow chamber and provided with an orifice with a variable cross sectional area, a magnetic member arranged close to the magnetic throttling member on the cavity, and a differential pressure flow sensor used for detecting the pressure difference on both sides of the magnetic throttling member in the gas flow chamber and calculating the flow of the gas passing through the gas flow chamber according to the pressure difference, wherein the cross sectional area of the orifice is unchanged under the action of the magnetic member when the flow of the gas passing through the magnetic throttling member is smaller than or equal to a preset value, and the cross sectional area of the orifice is increased under the action of the gas passing through the magnetic member when the flow of the gas passing through the magnetic throttling member is larger than the preset value. The gas flowmeter has the advantages of being high in measurement accuracy, stable in measurement at small gas flow and capable of providing safe and stable small gas flow and the like.

The invention discloses a control valve of a carbon tank. The carbon tank comprises an upper cover and a shell, wherein the upper cover is provided with a Laval pipe shaped through hole; the shell is internally provided with a magnetic tank, a coil framework, a coil, a contact pin, a magnetic core, armature iron and a valve seat; and the magnetic tank is internally provided with a cavity. The coil framework, the coil and the contact pin are mounted in the cavity; the coil framework is provided with a hollow shaft; the coil is wound at the periphery of the hollow shaft of the coil framework; the contact pin is fixed on the coil framework; a copper line of the coil is electrically connected to one end of the contact pin; the magnetic core is located in the hollow shaft of the coil framework and is fixed with the magnetic tank by screw threads; the armature iron and the valve seat are respectively arranged on the coil framework; a through hole with a radial section is arranged at the center of the valve seat; and a spring is arranged between the magnetic core and the armature iron. By adopting the Laval pipe structure, the control valve of the carbon tank, disclosed by the invention, can overcome a difference of pressures at two ends of the control valve of the carbon tank and realize a relatively steady gas flow.

An object is to provide a technology in which in debarring machining on a three-dimensionally shaped ridge line by laser application, a stable gas flow can be supplied and in which stable deburring machining can be performed. A deburring device for removing a burr which is present on a ridge line of a workpiece after being machined, includes: a laser device which includes a laser machining head that applies laser light to the ridge line; a transport device which transports the laser device and a gas jetting, device; and a controller which controls the laser device, the gas jetting device and the transport device and the controller controls the gas jetting device and the transport device such that a gas jetting nozzle is moved on a plane including the bisector of an apex angle of the ridge line and the ridge line and that in a side view parallel to the ridge line, an angle formed by the ridge line and the central axis line of the gas jetting, nozzle is an acute angle.

The invention discloses a method for preparing a graphene film through combination of carbon dioxide and low-pressure chemical vapor deposition. The method comprises the processes of copper foil pretreatment, copper foil annealing, graphene growth and cooling. Carbon dioxide is adopted to pretreat a copper foil, a copper foil is annealed in a mixed atmosphere of hydrogen and argon at 900-1050 DEG C, a deposition reaction is carried out in a mixed atmosphere of carbon dioxide, hydrogen and methane at 900-1050 DEG C during growth, and argon is adopted for cooling after growth is finished. On the basis of overcoming the defects of a normal-pressure graphene preparation method, carbon dioxide is combined with a low-pressure system to prepare the graphene film, so that the phenomena of pits, bulges, air holes and the like on the surface of the graphene film in a normal-pressure experiment are effectively eliminated, the quality of graphene is improved, the carbon source is wide in source, the cost is reduced, and the method is more suitable for industrial production.

The invention discloses a calibration system for an aerodynamic particle size spectrometer. The system comprises dust environment simulation equipment, wherein the equipment comprises a wind tunnel which is sequentially connected with a mixing section, a diffusion section and a testing section; a sealing end plate is arranged at the upstream of the mixing section, the mixing section is provided with at least two powder inlets, each powder inlet is provided with a monodisperse particle generating and supplying device, and the monodisperse particles supplied by the supplying devices have different particle sizes; the mixing section is also provided with a clean air inlet and the clean air inlet is connected with a clean air supplement system; and the testing section is internally provided with an aerodynamic particle size spectrometer to be calibrated and a standard aerodynamic particle size spectrometer, the downstream end of the testing section is connected with an exhaust pipeline, the exhaust pipeline communicates with an air inlet of a filter cartridge dust remover or a filter bag dust remover, an air outlet of the filter cartridge dust remover or the filter bag dust remover isconnected with an exhaust fan through an air outlet pipe, the air outlet pipe is provided with a flowmeter, and the exhaust pipeline is provided with an air supplementing port. The system ensures stable airflow in the wind tunnel and filters dust at the air outlet.

The present invention discloses a single-tower double-kettle system interrupted extraction rectification method capable of implementing that the boiling point of solvent is higher than that of material. The described single tower is extraction rectification tower whose interior is equipped with filler recovery section and extraction rectification filler section, and the double-kettle comprises solvent kettle and material kettle which are connected with bottom portion of extraction rectification tower. Said invention also provides the concrete steps of said system interrupted extraction rectification method.

The invention provides an electrolysis system for preparing arsine by an electrolysis method. The electrolysis system comprises: an electrolytic cell having a cathode chamber and an anode chamber separated by an ion semipermeable membrane, wherein the cathode chamber electrolyzes to generate arsine and hydrogen, and the anode chamber electrolyzes to generate oxygen; a cathode gas conveying pipeline connected with the cathode chamber; an anode gas conveying pipeline connected with the anode chamber; and a first pressure difference sensor arranged between the cathode gas conveying pipeline and the anode gas conveying pipeline and used for monitoring the pressure difference of the anode chamber and the cathode chamber. According to the invention, the pressure difference of the anode chamber and the cathode chamber is monitored by the first pressure difference sensor, and when the pressure difference exceeds the limit, the gas pressure in the anode chamber and/or the cathode chamber is adjusted, wherein the adjusting comprises: adjusting gas flow velocity, voltage and the like to avoid the ion semipermeable membrane from being damaged by excessive pressure difference, so that the stable quality of the gas generated by and flowing out of the cathode chamber is ensured, and the stability of the gas flow in subsequent application is ensured without deep purification so as to ensure the safe and stable operation of the system.

The invention discloses an oxygenerator, which includes: a machine body; a cover body, which is arranged on the machine body, and is equipped with a pressure regulating valve installation part and an air inlet hole and an air outlet hole that are communicated with the pressure regulating valve installation part; a pressure regulating valve assembly, which is arranged in the pressure regulating valve installation part. According to the oxygenator of the embodiment involved in the invention, by designing the assembly as part of the oxygenator main body, the volume of the pressure regulating valve can be effectively reduced, energy loss on a gas route is avoided, and the efficiency of the oxygenator is improved. Also, the oxygenator with the structure has the characteristics of convenient pressure regulation, stable gas flow and good pressure regulating effect, prolongs the service life of the pressure regulating valve, improves the quality of the pressure regulating valve, and also improves the quality of the oxygenerator.