11results about How to "Increase pressure difference" patented technology

The invention discloses a molecular film type automotive nitrogen and oxygen separation device which comprises a turbocharger, a nitrogen and oxygen separator, a gas inlet valve, a gas outlet valve, a negative pressure pump and an electric control throttling valve. The turbocharger is driven by a turbine in an automobile turbocharger, so that the air is compressed to be conveyed to two paths of the nitrogen and oxygen separation device, the nitrogen and oxygen separation device can separate oxygen from the air, the air with high oxygen content is output, and the air is supplied to an engine for use through the gas outlet valve. The two paths of the nitrogen and oxygen separation device work alternately, when the temperature of the two paths of the nitrogen and oxygen separation device is too high to influence oxygen production efficiency, a main air inlet pipeline is opened to provide air normally by controlling the opening degree of the electric control throttling valve, and thus the phenomena of gas circuit plugging and engine stalling are avoided. According to the automotive nitrogen and oxygen separation device, the two branch paths work alternately, high concentration oxygen can be supplied to the engine continuously so that fuel can burn and act, and the burning utilization rate of the fuel is improved.

The invention discloses a lithium ion battery electrolyte repair method, and relates to the technical field of lithium ion batteries, the lithium ion battery electrolyte repair method comprises a to-be-supplemented battery cell arranged in the lithium ion battery, the battery cell comprises a side sealing area and a top sealing area which are subjected to heat sealing, and a first sealing area and a second sealing area which are not subjected to heat sealing, the method specifically comprises the following steps: S1, selecting lithium ion batteries with voltage and internal resistance within a process range and without damage and liquid leakage for later use; according to the lithium ion battery liquid supplementing repairing method, the infiltration effect of the electrolyte is guaranteed through a negative pressure-pressurization circulating liquid injection mode of negative pressure liquid injection and small-amount multiple liquid injection, and negative pressure liquid injection can effectively promote infiltration of the electrolyte by a lithium battery pole piece and a diaphragm, so that the electrolyte can be effectively prevented from being damaged. And multiple negative pressure pumping-pressurizing cycles are adopted, so that the wettability of the lithium ion battery can be promoted, and as negative pressure pumping-pressurizing cycle liquid injection is adopted, residual gas in the battery is pumped out through negative pressure pumping when the electrolyte is injected every time, and the air resistance is reduced.

The device comprises a coaxial stabilizer, a combustion chamber, a coupler and a gun barrel, and the coaxial stabilizer is connected with the rear end of the combustion chamber in a sealed mode and provided with a gun bore pressure measuring pipe, an ignition needle, a fuel needle, a first oxygen input pipe and a second oxygen input pipe. One end of the coupler is in sealed connection with an outlet of the Laval nozzle structure of the combustion chamber, the other end of the coupler is in sealed connection with the gun barrel, a spray gun body is integrally formed, and the interior of the combustion chamber, a central through hole of the coupler and the interior of the gun barrel jointly form a flame channel; a powder feeding needle is arranged on the connector in the radial direction and used for feeding powder into the flame channel of the center through hole and feeding hydrogen and carrier gas into the flame channel of the center through hole. Hydrogen and oxygen are introduced to be subjected to supersonic combustion at the connector, the bore pressure difference and the flame temperature can be further increased, the flame flow speed of a conventional supersonic flame spray gun ranges from 6 Mach to 8 Mach, and the flame flow speed of the supersonic flame spray gun is increased to 10 Mach or above.

The utility model belongs to the field of traditional Chinese medicine processing, and particularly relates to membrane filtration traditional Chinese medicine stirring equipment which comprises a filtering barrel, a filtering membrane core is fixedly mounted on the inner wall of the filtering barrel, a stirring mechanism is arranged at the top of the filtering barrel and comprises a motor, and the motor is fixedly mounted at the top of the filtering barrel. A rotating shaft is fixedly mounted at the output end of the motor, one end of the rotating shaft penetrates into an inner cavity of the filtering barrel, a first connecting plate is fixedly connected to one end of the rotating shaft, a second connecting plate is fixedly connected to one end of the first connecting plate, and a stirring rod is fixedly mounted on one side of the second connecting plate; the stirring mechanism is arranged, the purposes that medicine macromolecules in original medicine liquid move and are prevented from blocking micropores of a filtering membrane core can be achieved, and a stirring rod rotates to stir the original medicine liquid, so that the situation that the filtering speed is reduced and the filtering work progress is affected due to the fact that the medicine macromolecules block the micropores of a filtering membrane is avoided.

The application relates to a double-channel rotating detonation combustion chamber structure with an inlet total pressure adjusting function, which comprises a Tesla valve arranged at the inlet of the rotating detonation combustion chamber, the Tesla valve comprises a shell and a flow channel, the inlet end and the outlet end of the flow channel are respectively provided with pressure adjusting structures, the radial outer side of the flow channel is provided with an injection channel, the injection channel comprises an air outlet channel and a pressurizing channel communicated with the air outlet channel, and the side, away from the pressurizing channel, of the air outlet channel is provided with an opening and closing assembly for opening or closing the air outlet channel, the opening and closing assembly comprises a supporting plate, a plurality of opening and closing doors and a self-locking driving part, and the self-locking driving part is used for synchronously driving the plurality of opening and closing doors to be close to or away from the outlet side of the air outlet channel. The application has the effects that when the rotating detonation combustion chamber is in an air thin belt, the air intake of the air inlet channel is automatically enhanced, the rotating detonation combustion chamber preferentially intakes the air in the air inlet channel, the air supply of the combustion chamber is ensured, and the adaptability and stability of the combustion chamber in different environments are improved.

The invention relates to the technical field of wireless networks, in particular to a wireless network sharing device which comprises a body, an arrangement piece arranged at the upper end of the body, a connecting line arranged at the rear end of the arrangement piece, an auxiliary line arranged at the rear end of the connecting line and a plurality of antennas installed at the lower end of the auxiliary line at equal intervals. A plurality of fixing plates are attached to the upper end of the rear portion of the mounting plate at equal intervals, the front ends of the antennas are movably connected with the fixing plates respectively, a fixing part is arranged at the lower end of the mounting plate, an auxiliary part is mounted at the upper end of the mounting plate, and the auxiliary part penetrates through the mounting plate and is communicated with the fixing part; the upper ends of the plurality of limiting pieces penetrate through the mounting plate and are respectively connected with the plurality of fixing plates, the antenna and the main body are in a split state, the height of the mounting position of the antenna is adjusted, the probability that the Internet is blocked due to the fact that an antenna signal is blocked by an obstacle is effectively reduced, and the wireless network sharing effect is effectively ensured.

The invention relates to the technical field of offshore platform emergency power supply, and discloses an emergency power supply system based on a multi-tripod type offshore wind turbine foundation. The emergency power supply system comprises a fan foundation assembly, an electrical assembly and a water guide and drainage assembly. A middle shaft barrel of the fan foundation assembly is connected with the top end of a pipe pile through an inclined supporting pipe, a horizontal supporting pipe and a connecting sleeve. The electrical assembly comprises emergency power generation equipment and power supply equipment, the emergency power generation equipment is arranged in the horizontal supporting pipe and suitable for generating power through seawater entering the horizontal supporting pipe through the water inlet and outlet, and the power supply equipment is arranged on the middle shaft barrel and electrically connected with the emergency power generation equipment. The water guiding and draining assembly is arranged in the draught fan foundation assembly and used for guiding water flow or draining seawater in the pipe pile. Seawater is used for power generation, cost is low, obtaining is easy, and the emergency power supply requirement of an offshore wind plant when the wind generating set stops can be met. The main parts are arranged in the internal space of the multi-tripod type offshore wind turbine foundation, and the space of an outer platform and the like cannot be additionally occupied.

The invention relates to the technical field of speed reducers, in particular to an underground speed reducer which comprises a shell, a sealing cavity is formed in the shell, a first annular sliding sleeve and a second annular sliding sleeve are arranged at the two ends of the sealing cavity respectively, a first piston is slidably and hermetically connected into the first annular sliding sleeve, and a first spring is axially arranged in the first annular sliding sleeve; the input shaft penetrates through the middle of the first piston, a second piston is connected into the second annular sliding sleeve in a sliding and sealing mode, a second spring is arranged in the second annular sliding sleeve in the axial direction, and the output shaft penetrates through the middle of the second piston. When the pressure difference is generated between the sealing cavity and the outside of the shell, the first piston and the second piston can compress or enlarge the space of the sealing cavity, then the pressure in the sealing cavity is increased or reduced till the pressure inside and outside the speed reducer is balanced, the working performance and reliability of the speed reducer in the underground severe environment are improved, and the service life of the speed reducer is prolonged. Pressure difference inside and outside the speed reducer can be balanced, and sealing performance is good.

The utility model relates to cultivation wastewater treatment, and discloses a filtering device for cultivation wastewater treatment, which comprises a filtering bin, a composite filtering layer is arranged in the filtering bin, and the composite filtering layer comprises a plurality of common filtering membrane layers and carbon nano tube filtering layer groups arranged between the adjacent common filtering membrane layers. Each carbon nanotube filter layer group comprises a plurality of carbon nanotube filter layers; the carbon nano tube filter layer comprises a base layer, two protective layers located on the upper side and the lower side of the base layer respectively, and a carbon nano tube composite material layer located between the base layer and the two protective layers, and is obtained through hot pressing and compounding. A positive pressure air inlet device and an air pressure sensor are also arranged at the top of the filtering bin. According to the filtering device, a common filtering membrane is combined with a carbon nano tube filtering layer, residual antibiotics and pathogens in aquaculture wastewater are removed by utilizing excellent adsorption performance and bactericidal activity of carbon nano tubes, and the influence of aquaculture wastewater discharge on human and environment is reduced; the device can also perform positive pressure filtration, so that the filtration efficiency is ensured.

The liquid storage device of the low-temperature single-screw unit comprises a tank body and a siphon tank, the tank body comprises a liquid inlet pipe and a balance pipe, the liquid inlet pipe is connected between the tank body and the siphon tank, and the liquid inlet pipe is used for conveying refrigerants; the balance pipe is connected between the tank body and the siphon tank, the balance pipe is used for balancing the pressure in the tank body and the siphon tank, and the balance pipe connected between the tank body and the siphon tank can balance the pressure between the tank body and the siphon tank, so that the pressure difference between the tank body and the siphon tank is prevented from being too large, and it is ensured that a refrigerant can smoothly flow into the liquid storage device.

A main catheter body comprises an inner catheter and an outer protective catheter, a catheter fixator is arranged on the outer wall of the front end of the inner catheter, the outer protective catheter is arranged on the inner catheter in a sleeving mode, and the front end of the outer protective catheter is connected with the outer wall of the catheter fixator in a sealed mode; the rear end of the inner tube is connected with the rear end of the outer protective tube, and the rear end of the inner tube is used for being connected with a urine bag; the water injection pipe is connected with the ureter fixer; the flushing pipe is communicated with the inner pipe, and the other end of the flushing pipe is provided with an infusion connector matched with an injector. The bypass comprises a first connecting pipe, a second connecting pipe and a bridging pipe; the bridging pipe is used for connecting the first connecting pipe and the second connecting pipe; the main urinary catheter closing lock is arranged on the main catheter body between the first connecting tube and the second connecting tube; the infusion connector matched with the injector is arranged on the flushing pipe, so that liquid leakage from the connector during flushing can be prevented; the catheter is provided with a bypass, so that the pressure difference generated by injection and pumpback actions of the injector in the catheter can be increased, and the dredging efficiency of the catheter is improved.