14525 results about "Gas supply" patented technology

A system for dehydration of organic material comprises a housing structure having an interior chamber, a supply duct, a dual trunk structure, a dry air intake, a central recirculation duct, and a plurality of side recirculation ducts. The side recirculation ducts each have a return plenum extending downward from a top recirculation duct and are configured to recirculate interior air contained in the chamber. The interior air enters the side recirculation ducts through the return plenums and is pushed upward and outward through the top recirculation ducts and back into the interior chamber. The interior chamber has a plurality of exhaust vents positioned in the upper region of its walls. A plurality of portable platforms positioned inside the interior chamber are configured to hold the organic material. The floor of the housing structure can include a plurality of tracks for loading, unloading and positioning the portable platforms.

The invention relates to an air bag type mechanical sealing structure and a sealing method thereof in the technical field of LNG ships, the air bag type mechanical sealing structure comprises an annular air bag sealing ring, an air supply system room floor enclosure bulkhead and a liquid tank top drooping wall, and annular flexible sealing lips are fixedly arranged at the top and the bottom of the annular air bag sealing ring; hard sealing rings are fixedly arranged at the bottom of the air supply system room floor enclosure bulkhead and the top of the liquid tank top drooping wall correspondingly, and the hard sealing rings and the flexible sealing lips are connected in a matched mode. The movable gap formed by the top of the liquid tank and the air supply system can be fully sealed, the technical requirements of deformation of the top of the liquid tank and relative deformation and movement between peripheral ship deck components under the conditions of ship navigation, severe sea conditions, temperature difference and the like are met, and the technical requirement for sealing of the top of the liquid tank and an air supply system chamber is also met; the risk of ultralow-temperature gas leakage is avoided, closed-loop management of monitoring, analysis, compensation and alarm is achieved, and system safety and maintenance efficiency are improved.

The present invention relates to the technical field of waste heat recovery equipment, and specifically discloses a waste heat recovery device for flue gas in a thermal power plant. It includes a box body with an upper smoke chamber, a heat exchange chamber and a lower smoke chamber inside. A number of smoke pipes connecting the upper smoke chamber and the lower smoke chamber are fixed in the heat exchange chamber; above the smoke pipes, there is a piston cylinder fixed by the box body; the upper end of the piston cylinder is connected to a high-pressure gas supply pipe, and a piston is arranged inside. The piston is connected with a scraping head through a push rod; side holes are provided on the push rod; when the high-pressure gas drives the piston to move downward, the scraping head moves along the inner wall of the smoke pipe to scrape off the ash slag. The waste heat recovery device for flue gas in this thermal power plant has a cleaning function and a better cleaning effect, high heat exchange efficiency and good waste heat recovery effect. The waste heat recovery device for flue gas in this thermal power plant can be automatically cleaned without disassembling components, is fast and efficient, and can be operated online. The ash slag scraped off during the cleaning process can be centrally recovered, avoiding re-mixing into the flue gas again, reducing the workload in the flue gas dust treatment link, and saving the subsequent environmental protection treatment cost.

The invention relates to a membrane stack (9) for an air humidifier (1) of a fuel cell for humidifying a dry supply air stream (2) of the fuel cell by means of a moist exhaust air stream (3) of the fuel cell, - wherein the membrane stack (9) is configured in a cuboid shape, has a stacking direction (S) and four stacking sides (10) perpendicular to the stacking direction (S), - wherein the membrane stack (9) has a vertical direction (Z) parallel to the stacking direction (S), a longitudinal direction (X) perpendicular to the vertical direction (Z) and a transverse direction (Y) perpendicular to the vertical direction (Z) and perpendicular to the longitudinal direction (X), - wherein the four stack sides (10) form an air supply inlet (ZE) and an air supply outlet (ZA) facing away from each other in the longitudinal direction (X), and an exhaust air inlet (AE) and an exhaust air outlet (AA) facing away from each other in the transverse direction (Y), - wherein the membrane stack (9) comprises several membranes (11) which are permeable to moisture and impermeable to air and which follow one another in the stacking direction (S) such that the membranes (11) within the membrane stack (9) each separate a supply air path (ZP) connecting the supply air inlet (ZE) to the supply air outlet (ZA) from an exhaust air path (AP) connecting the exhaust air inlet (AE) to the exhaust air outlet (AA). Improved functional reliability can be achieved by having the membrane stack (9) have several spacers (12) which are arranged in the stacking direction (S) between two immediately successive membranes (11) in one of the exhaust air paths (AP).

The invention relates to the field of aero-engine bearing cavity structure system testing, and particularly provides an aero-engine bearing cavity inner lubricating oil flow state measuring system which comprises a test piece main body simulating an aero-engine bearing cavity, an oil gas supply and recovery system and a control system. The test piece main body comprises a rotor test piece and a stator test piece which are connected together, and the oil gas supply and recovery system comprises an oil supply system, a gas supply system, an oil return pool and an oil gas separation pump. The control system comprises a controller, and an oil supply throttle valve, an air supply throttle valve, an exhaust throttle valve, a test data acquisition assembly and a test piece main body driving device which are in signal connection with the controller. On the basis of the method, the lubricating oil-air flowing state in the bearing cavity can be monitored and evaluated in real time, and test support can be provided for follow-up bearing cavity optimization design.

The invention relates to the technical field of optics, in particular to a gas concentration regulation and control interference imaging system applied to shape righting of a nozzle handle, a shape righting tool and a nozzle are prepared, the shape righting tool is provided with a downward pressing mechanism, the downward pressing mechanism is provided with a downward pressing telescopic column for correcting the nozzle handle, and a displacement measurement interferometer system is assembled on the shape righting tool; the displacement measurement interferometer system is provided with a reflecting movable mirror and a beam splitter, and the reflecting movable mirror is mounted on the pressing telescopic column; the displacement measurement interferometer system further comprises an interference light path stroke difference fine tuning system. The interference light path stroke difference fine adjustment system comprises a glass container for containing sulfur hexafluoride, the end faces of the two ends of the glass container are flat and transparent, the glass container is arranged on a light path between the beam splitter and the reflective moving mirror, and the end faces of the two ends of the glass container are perpendicular to laser on the light path; the glass container is provided with an air supply port; the air supply port is connected to an air pump, and the air pump is connected with a sulfur hexafluoride air source. And the shape correcting position of the nozzle handle is accurately controlled.

The invention relates to the technical field of aero-engines, in particular to a sealing and cooling structure and method for adjusting the axial force of an aero-engine rotor, which comprises a turbine disc provided with a rear baffle, and further comprises a low-pressure turbine guide vane arranged opposite to the turbine disc, a low guide front inner supporting ring and a low guide rear inner supporting ring are arranged in the middle of the low-pressure turbine guide vane; labyrinth teeth correspondingly matched with the low-guide front inner supporting plate are formed on the rear baffle, radial labyrinth tooth gaps are formed, and when airflow in an air collection cavity enters a rotor cavity from a low-pressure pre-rotation nozzle, the airflow is embedded into an air supply channel from a front pre-rotation hole at the same time; one part of airflow entering the air supply channel enters the disc rear cavity, and the other part of airflow enters the rotor cavity. By adjusting the sealing labyrinth structure, it is ensured that the axial force of the rotor does not exceed the allowable maximum value in the large-state working process and is not subjected to light load in the small-state working process, meanwhile, sealing gas used behind a turbine disc is ensured, turbine hot gas is prevented from flowing into an inner disc cavity from a main channel, and it is ensured that an engine works reliably.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing gas supply system which comprises a first gas supply subsystem and a second gas supply subsystem, the first gas supply subsystem comprises a first pipeline, a first check valve, a first reaction mechanism, a second reaction mechanism and a degassing structure, and the first reaction mechanism, the second reaction mechanism and the first pipeline are sequentially connected; a reactant is arranged in the first reaction mechanism, a catalyst is arranged in the second reaction mechanism, and the first check valve and the degassing structure are arranged on the first pipeline; the second gas supply subsystem is connected with the first pipeline; when the gas source is cut off, the reactant and the catalyst are subjected to chemical reaction in the second reaction mechanism to generate water vapor and oxygen, the degassing structure is used for consuming the oxygen and generating superheated steam, and the superheated steam enters the hydrostatic bearing. The air supply system for the hydrostatic bearing provides the pure water vapor working medium for the hydrostatic bearing, so that the normal operation of the hydrostatic bearing is ensured, and the hydrostatic bearing is prevented from being damaged.

The invention discloses a temperature compensation method and system, and the method comprises the steps: receiving a valve block temperature signal collected by a temperature sensor integrated with a pressure sensor in a closed gas supply unit, and an electronic element temperature and environment temperature signal collected by a temperature sensor on a control unit PCB, generating an initial temperature-working condition data set by combining the power of the air pump and the working duration of the electromagnetic valve; performing thermal resistance network modeling on the initial temperature-working condition data set, constructing a multi-node thermal characteristic matrix, and decomposing the matrix into a plurality of sub-matrixes; performing real-time operation on the sub-matrix by using a dynamic heat balance algorithm to generate a temperature estimation result of the key component; and generating a temperature compensation control instruction according to the temperature estimation result of the key component. According to the embodiment of the invention, the temperature of the key component can be accurately estimated, dynamic compensation is realized, and the control precision and stability of the closed gas supply unit are improved.

The invention belongs to the technical field of coal field fire evolutionary analysis, and particularly provides a visual coal field fire evolutionary process analog simulation test device and method. The test device comprises a test bench, a physical similarity model, a fiber bragg grating temperature and stress integrated monitoring system, a multi-gas monitoring system, an image and video monitoring system and a computer analysis system. A plurality of opening frames are sequentially fixed to form test box bodies, the physical similarity model is arranged in the test box bodies, the inclination angle of the test box bodies is adjusted through an inclination angle adjusting mechanism, and the gas supply system and the ignition system are connected between the test box bodies. The fiber bragg grating temperature and stress integrated monitoring system, the multi-gas monitoring system and the image and video monitoring system are respectively in signal connection with the computer analysis system. According to the invention, visualization of coal field fire evolution processes under different conditions can be realized, and real-time monitoring of change rules of a temperature field, a seepage field and a fracture field in the coal field fire evolution processes under different conditions can be realized.

A vehicle passenger protecting device includes: a side airbag installed at least in a vehicle transverse direction outer side end portion of a headrest of a vehicle seat, and configured to, due to gas supplied at a time of a side collision, inflate and expand toward a vehicle front side at least at a vehicle transverse direction outer side of a head of a passenger seated on the vehicle seat; and a curtain airbag that is installed in at least a roof side rail of the vehicle, and that inflates and expands toward a vehicle lower side due to gas being supplied thereto at a time of a side collision of the vehicle. The side airbag for a head is configured so as to inflate and expand only in a case in which a seatback of the vehicle seat has been reclined by a predetermined angle or more.

The invention discloses a system for mineralizing carbon dioxide by micro-nano bubble reinforced base solid waste and an application method.The system for mineralizing carbon dioxide by micro-nano bubble reinforced base solid waste comprises a micro-nano bubble generation and injection unit, a mineralization reaction unit and a circulating water treatment unit, the micro-nano bubble generation and injection unit comprises a micro-nano bubble generation device, a gas supply pipeline and a water supply pipeline, the mineralization reaction unit comprises a mineralization reactor, and a quartz sand filling layer and a nylon screen are arranged at the bottom of the mineralization reactor. Through the multi-unit integrated coupling design, the micro-nano bubbles are creatively utilized to strengthen the gas-liquid-solid three-phase synergistic reaction process, the column type filling structure and the sectional type reaction mechanism are combined, the carbon dioxide mass transfer efficiency and the mineralization reaction rate are effectively improved, and the system has the advantages of being high in system adaptability, stable in continuous operation, flexible in module deployment and the like; the method is suitable for efficient treatment of alkaline solid waste and carbon dioxide sequestration collaborative scenes, and has good engineering popularization prospects and resource utilization value.

There is provided an apparatus for processing a substrate, comprising: a substrate holder disposed in a processing chamber and configured to hold the substrate; a processing gas supplying part configured to supply a processing gas into the processing chamber; a surrounding member disposed to surround a peripheral portion of the substrate held by the substrate holder and having an annular wall portion made of a dielectric; a plasma actuator disposed at the wall portion and configured to plasmarize the processing gas supplied by the processing gas supply part and form flow of plasma of the processing gas along the wall portion in a preset direction; and an injection mechanism configured to inject the plasma formed by the plasma actuator and flowing along the wall portion toward the peripheral portion of the substrate held by the substrate holder to perform processing using the plasma.

The invention relates to the technical field of spray towers, and provides a spray washing device for chemical waste gas purification, the spray washing device comprises a tower body, a spray bin, a waste gas uniform distribution mechanism, a filler bin and a stirring mechanism, the tower body is cylindrical, the bottom of the tower body is provided with a gas supply bin, the spray bin is arranged on the tower body, the spray bin is arranged above the gas supply bin, and the stirring mechanism is arranged above the gas supply bin. The waste gas uniform distribution mechanism is fixedly connected with the tower body, the waste gas uniform distribution mechanism is arranged in the gas supply bin and the spraying bin, the waste gas uniform distribution mechanism is used for enabling waste gas to uniformly rise in the spraying bin, the multiple filler bins are arranged above the spraying bin, the filler bins are filled with filler, each filler bin is internally provided with one stirring mechanism, and the stirring mechanisms are used for stirring the waste gas uniformly in the spraying bin. By means of the technical scheme, the problem that in the prior art, an existing spraying washing device is prone to insufficient waste gas treatment is solved.

The invention relates to the field of welding devices, and discloses a laser swing welding device and a welding method.The laser swing welding device comprises a supporting table, an adjusting mechanism, a swing mechanism, a laser welding head, a gradient temperature changing mechanism, a housing, an air supply mechanism, an air injection preheating mechanism and a clamping mechanism; the adjusting mechanism is arranged on the supporting table and connected with the gradient temperature changing mechanism so as to change the welding position of the laser welding head. A first plate body and a second plate body are placed on the supporting table so as to be limited by the clamping mechanism. The laser welding head is rotationally arranged on the housing and driven by the swing mechanism so as to conduct swing welding on the welding position between the first plate body and the second plate body. Through cooperation of the gradient temperature changing mechanism, the ultrasonic transducer and the gas supply and jet preheating mechanism and cooperation of the eccentric driving disc and the swing frame, preheating of protective gas, gradient cooling after welding and heating are achieved, thermal stress and thermal shock are reduced, the welding seam performance is improved, laser energy is evenly distributed, and the welding quality of dissimilar metal plates is improved.

The invention discloses a modeling and optimization control method for a gas supply system of a proton exchange membrane fuel cell, and belongs to the technical field of hydrogen energy power. The method comprises the following steps: establishing a nonlinear state space model of a proton exchange membrane fuel cell gas supply system; determining the optimal oxygen excess ratio of the system under different load currents through experiments, and fitting the optimal oxygen excess ratio into a reference function about the load currents; based on the nonlinear state space model, a model prediction control problem with tracking of the optimal oxygen excess ratio and minimization of the cathode and anode pressure difference as control targets is constructed and expressed as a constrained quadratic programming problem; and decomposing and iteratively solving the quadratic programming problem by adopting an alternating direction multiplier method to obtain the optimal control input of the current control period and act on the system. The method effectively solves the problem that traditional model predictive control is difficult to deploy in real time in a vehicle-mounted controller due to large calculated amount, so that efficient and accurate cooperative control of the proton exchange membrane fuel cell gas supply system is realized.

The invention provides a method for adjusting a gas inlet device in semiconductor processing equipment and the semiconductor processing equipment, and the method comprises the steps: conveying gas through a reference path exhaust device with a flow controller, and obtaining an associated gas supply parameter reference value under a preset gas supply condition, the gas supply condition and the gas supply parameter both relate to the cavity pressure and the opening degree of the exhaust butterfly valve; gas is conveyed through the selected adjustment gas inlet device, and related gas supply parameter adjustment values are obtained; and calculating according to the gas supply parameter reference value and the gas supply parameter adjustment value to obtain a gas flow deviation, adjusting the selected gas pressure regulating valve of the adjustment gas inlet device to enable the gas flow deviation to meet the requirement, and completing adjustment of the adjustment gas inlet device. According to the adjustment method, the process is simple, and the gas flow of the gas inlet device provided with the adjusting valve is equivalent to the gas flow of the gas inlet device provided with the flow controller through gas flow deviation adjustment, so that the gas pressure adjusting valve is equivalent to the flow controller, the usage amount of the flow controller is reduced, and the cost is effectively reduced.

Disclosed is a physical simulation experiment system for vapor-liquid multiphase seepage in an underground gas storage facility in a depleted gas reservoir, including: a rock sample sealing, heating, and insulation system, a triaxial stress and confining pressure loading system, an oil-gas-water injection and pore pressure supply system, a vapor-liquid-solid three-phase separation and measurement system, an optical micro / nanofiber gas detection and monitoring system, a distributed fiber optic sensing system, and a gas supply and leakage alarm system, where the rock sample sealing, heating, and insulation system is used for accommodating and heating a rock sample; and the oil-gas-water injection and pore pressure supply system performs oil-gas-water injection into the rock sample and pore pressure maintenance. The present application aims to overcome the bottleneck problem of evaluating the dynamic sealing integrity of underground gas storage under alternating loads caused by injection and withdrawal.

The invention belongs to the technical field of laser cutting, and discloses a laser plate cutting machine with a waste separating device, the laser plate cutting machine comprises a supporting seat and a laser cutting mechanism, clamping assemblies are fixedly arranged on the two sides of the supporting seat, and a guide plate fixed to the top of the supporting seat is arranged on one side of each clamping assembly. By matching with reversing control of the air supply assembly, movement control of the locking assembly can be achieved, so that position locking is conducted on the cone rod after lifting, the cone rod which reciprocates up and down is matched with the inclined vibration assembly, on one hand, guide separation of waste in the cutting process is actively achieved through the inclined vibration assembly, and on the other hand, the cutting efficiency is improved; and on the other hand, after cutting is completed, the vibrating assembly is impacted in a reciprocating mode in cooperation with vertical movement of the conical rod, attached residual waste is separated in a reinforced mode, the separated waste is pushed and collected in a concentrated mode in cooperation with the transversely-moving installation base, the cutting powder separation and collection efficiency is greatly improved, and the use effect is good.

Methods and apparatus for processing a substrate are provided herein. For example, a gas supply configured for use with a processing chamber includes an ampoule that stores a precursor and comprises an input to receive a carrier gas and an output to provide a mixture of the carrier gas and the precursor to the processing chamber and a sensor assembly comprising a detector and an infrared source operably connected to an outside of an enclosure, through which the mixture flows, and a gas measurement volume disposed within the enclosure and along an inner wall thereof so that a concentration of the precursor in the mixture can be measured by the detector and transmitted to a controller.

The utility model relates to a liquid hydrogen storage tank with a vaporizer. Comprising an inner shell used for containing liquid hydrogen; the pressurizing unit comprises a pressurizing pipeline, and a pressurizing valve, a pressurizer and a pressurizing and pressure regulating valve which are sequentially arranged on the pressurizing pipeline in the medium flowing direction; one end of the pressurizing pipeline is connected with the bottom end of the inner shell, and the other end is communicated with the gas-phase space of the inner shell; the pressurizing unit is used for maintaining the pressure of the inner shell at a first pressure; the air supply unit comprises an air supply pipeline, and an air supply valve, a vaporizer, a pressure reducing valve and a check valve which are sequentially arranged on the air supply pipeline in the medium flowing direction; one end of the gas supply pipeline is connected with the bottom end of the inner shell, and the other end is connected with external gas utilization equipment; the vaporizer is used for converting liquid hydrogen into hydrogen, and the pressure reducing valve is used for reducing the pressure of the gasified hydrogen to the pressure required by gas equipment; and the exhaust unit is communicated with the gas phase space of the inner shell and is used for exhausting the overpressure gas. According to the storage tank, gas supply parameters can be changed according to gas use requirements of users, and the applicability is high.

The invention discloses an intelligent energy-saving control method for an air compression system based on data driving. The intelligent energy-saving control method is suitable for an industrial air compression station with multiple parallel units. According to the method, operating parameters of all air compressors and pressure and flow data of a header pipe are collected in real time, an energy efficiency model of the output flow and the gas-electricity ratio of all frequency converters is established, and the future flow requirement of the header pipe is dynamically predicted in combination with the characteristics of a fixed frequency machine. Based on a prediction result and a single-machine energy efficiency model, the basic load and the fluctuation load are distributed according to the overall energy efficiency optimization principle of the system, the start-stop sequence and the rotating speed of each unit are determined, and stable main pipe pressure, continuous gas supply, rapid response and good operation flexibility are achieved. By means of the method, the energy efficiency difference of all the units can be fully utilized, energy consumption fluctuation and equipment abrasion caused by frequent starting and stopping are reduced, and the overall energy utilization rate of the air compression system and the reliability of the industrial production process are improved.

The invention belongs to the technical field of natural gas transportation and distribution filtration of natural gas stations, and relates to a filter and a filter element backwashing method thereof without stopping natural gas transportation and distribution filtration. The filter comprises a main cylinder, a main filter element and a backwashing device, wherein the backwashing device comprises an air blowing cylinder arranged in the main filter element, a high-pressure hose used for conveying high-pressure gas into the air blowing cylinder and a driving mechanism used for driving the air blowing cylinder to reciprocate in the main filter element in the axial direction; the air blowing cylinder is of a cylindrical structure with two closed ends, and a plurality of air blowing holes are formed in the side wall; the high-pressure hose is located in the main filter element, the bottom end of the high-pressure hose is connected to the top end of the air blowing cylinder, the top end of the high-pressure hose is externally connected with a high-pressure air supply source, and high-pressure air entering the air blowing cylinder is blown out through the air blowing holes to backwash the main filter element from inside to outside. The air blowing cylinder of the filter can perform movable backwashing in the main filter element, so that the whole main filter element is helped to recover the filtering effect, and the backwashing device can independently operate to backwash the main filter element while the filter continuously filters natural gas.

The invention belongs to the technical field of gas turbine blade test equipment, and relates to a multi-gas-path coordinated regulation high-temperature blade gas thermosetting rotation test system, which comprises a test shell, a transmission shaft, a rotation assembly, a high-temperature gas supply assembly, a cooling gas supply assembly and a detection assembly. The transmission shaft can be driven to rotate through the rotating assembly, centrifugal force load borne in the actual operation process is simulated, high-temperature gas is conveyed into the test shell through the high-temperature gas supply assembly, a high-temperature environment is provided for the tested turbine blade, and thermal load borne in the actual operation process is simulated; cooling gas is conveyed into the tested turbine blade through the transmission channel by the cooling gas supply assembly, the cooling environment in the actual operation process is simulated, and finally various data of the test are detected through the detection assembly. Therefore, the flow heat transfer characteristic and the strength characteristic of the turbine blade under the actual operation condition can be obtained as far as possible through tests.

The invention relates to the technical field of robot grabbing, and discloses a self-sensing soft gripper and a slippage detection method thereof.The self-sensing soft gripper comprises a palm body, a base assembly, a sensor assembly and a data processing and control unit, and a plurality of pneumatic soft fingers are arranged on the upper portion of the palm body; a strain layer with a driving air cavity and a limiting layer wrapping the strain layer are arranged in each pneumatic soft finger, and the substrate assembly is embedded into the limiting layer; the sensor assembly comprises a plurality of flexible sensors, is integrated on the finger contact surface, partially fits the substrate assembly and collects contact interface pressure distribution data, and the data processing and control unit is electrically connected with the sensor assembly and the air supply device, receives the data, executes a slippage detection algorithm and regulates and controls the air pressure of the driving air cavity according to a result. The substrate assembly is introduced into the limiting layer of the pneumatic soft finger, the sensor assembly and the multi-dimensional feature fusion algorithm are combined, collaborative optimization from structural design, signal enhancement to algorithm detection is achieved, and therefore the sensitivity and reliability of slip detection are remarkably improved.

The invention discloses a micropore bubbling aeration two-stage oscillation modulation synergistic system and an application method thereof. The modulation synergistic system comprises a two-stage oscillation device, an air supply unit connected to the upstream of the two-stage oscillation device, and a micropore coil pipe and an aeration tank which are connected to the downstream of the two-stage oscillation device. The two-stage oscillation device comprises a non-feedback oscillation cavity connected with the branch section, a sound wave oscillation cavity sequentially connected with the air inlet section, and a cavity connecting section connected with the non-feedback oscillation cavity and the sound wave oscillation cavity in parallel. Controlled pulsating oscillation airflow is injected into the microporous aeration system through the two-stage oscillation device, and periodic inertia force disturbance is introduced in the bubble generation stage; the pulsating pressure field breaks through gas-liquid interface force balance under traditional steady-state airflow, so that the bubble separation critical size is remarkably reduced, hole opening air film oscillation is accelerated through high-frequency pressure oscillation, necking fracture is promoted, and the bubble separation size is reduced; and meanwhile, transient shear force generated by the pulsating airflow inhibits interaction of adjacent bubble wake flows, and the coalescence probability is reduced.

The invention discloses an MABR-based railway domestic sewage treatment system and a use method thereof, and relates to the technical field of sewage treatment, the MABR-based railway domestic sewage treatment system mainly comprises a water inlet unit, an anaerobic zone, an anoxic MABR zone, a transition MABR zone, an aerobic MABR filler zone, a sedimentation tank, a filter unit and a clear water output unit which are connected in sequence, and also comprises a sludge external reflux system and a gas supply system; according to the present invention, the respective advantages of the MABR technology and the water treatment filler are fully utilized, the simultaneous nitrification and denitrification are performed to efficiently remove the pollutants, the denitrification is well achieved by using the transition MABR region, and the pollutants are further removed by using the filtration unit, such that the domestic sewage treatment problem of the staff along the railway line is effectively solved, and the high efficiency, the stability and the sustainability of the sewage treatment are achieved. The method has the advantages of high pollutant removal efficiency, no internal reflux of mixed liquid, reduction of sludge yield, energy conservation, carbon reduction, easiness in operation and the like.

A gas supply control device that supplies a gas to a processing chamber in which a workpiece is processed, includes: a first port connected to a gas source of a purge gas; a second port to which a gas source of a processing gas is connected; a collective pipe in which each of the purge gas and the processing gas supplied from the first port and the second port merges, respectively, and flow; a first flow rate controller provided between the first port and the collective pipe; and a second flow rate controller provided between the second port and the collective pipe. A gas flow path through which the purge gas flows is provided from an output side of the first flow rate controller to an input side of the second flow rate controller.

The invention discloses a mold partition temperature control system based on an air film adjustable thermal resistance boundary, and belongs to the technical field of mold temperature control and thermal management. The system comprises a mold body, at least two temperature control subareas and gas film adjustable thermal resistance boundary units arranged between the adjacent temperature control subareas. The air film adjustable thermal resistance boundary unit comprises a boundary air cavity, an air injection micropore, an exhaust adjusting structure and an air supply unit. Gas enters the partition boundary area through the gas injection micropores and forms a gas film layer, and the thickness, continuity, stability and coverage range of the gas film layer are changed by adjusting the gas supply pressure, the gas supply flow and the exhaust resistance, so that the thermal coupling strength between the adjacent temperature control partitions is adjusted. The system is suitable for injection molding, pressure casting, hot pressing and composite material forming molds.

The invention relates to the technical field of air compression stations, in particular to an air bearing-based digital energy air compression station with a noise reduction effect, which comprises a machine room, and a screw air compressor, a cooler, an oil-water separator, a first air storage tank, a dryer, a filter and a second air storage tank which are sequentially connected are arranged in the machine room. The first air storage tank is further connected with a first air supply pipe, and the second air storage tank is further connected with a second air supply pipe. An air bearing is selected for the screw type air compressor, a third air supply pipe is arranged between the filter and the second air storage tank, the third air supply pipe is connected with the air bearing, and part of compressed air is continuously input into an air path of the air bearing through the third air supply pipe. According to the screw type air compressor, mechanical friction can be avoided through the air bearing, so that noise is further reduced, the noise reduction effect of the digital energy air compressor is improved, and compressed air can be conveniently obtained by the air bearing in an air compression station.