1440 results about "Gas transmission" patented technology

The invention discloses a PEM electrolytic cell GDL performance test method and system based on multi-dimensional parameters. The method comprises the steps that a sensor array is used for collecting the gas transmission rate, conductive resistance and mechanical deformation data in real time when a GDL gas diffusion layer operates; preprocessing and synchronously analyzing the acquired data to generate a feature matrix with multi-dimensional performance parameters; based on the generated feature matrix, a deep reinforcement learning algorithm is adopted to dynamically adjust test conditions so as to optimize a test process; performing comprehensive scoring on test results under different working conditions by using an adaptive weighted fusion algorithm; and according to the comprehensive score and the actual working condition demand, dynamically adjusting the test process through a feedback control mechanism until the test result meets the actual working condition demand. Through the integrated sensor array module, real-time monitoring and analysis of multi-dimensional parameters are realized. The comprehensive performance of the GDL in an actual working condition environment can be comprehensively considered through the multi-dimensional parameter comprehensive evaluation capability, and a more comprehensive and accurate basis is provided for performance evaluation of the GDL.

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 provides a dispersion gas assembly for a semiconductor, and belongs to the field of gas assembly connection, the assembly comprises a first joint unit and a second joint unit which can be axially butted and separated, and the first joint unit and the second joint unit are symmetrical in structure and respectively comprise a connecting sleeve and a built-in sealing assembly; a ventilation opening is formed in the butt joint end of the connecting sleeve, an annular plugging groove is formed in the circumferential inner wall, the sealing assembly is composed of a supporting ring for plugging, a plugging piston, a pushing abutting rod, a backward moving limiting ring and a plugging spring, the plugging piston slides in the plugging groove to control opening and closing of the ventilation opening, and the plugging spring provides reset elastic force. During butt joint, the pushing abutting rods on the two sides extrude each other, the blocking piston is driven to overcome the elastic force of the spring to move backwards, the ventilation opening communicates with the ventilation hole, and a gas channel is opened. According to the assembly, through the collaborative design of mechanical linkage and hydraulic sealing, reliable opening and efficient sealing of a gas passage during butt joint of joints are achieved, the gas leakage risk is effectively reduced, and the high-precision requirement for transmission of dispersion gas for semiconductors is met.

The utility model relates to a small-sized low-temperature gas purification and pressure control device which comprises a particulate matter filter, a pressure buffer tank, a pressure controller, a purifier and a parallel gas conveying pipeline, the parallel gas conveying pipeline is divided into a gas inlet channel, a flow dividing channel, a purifying channel, a connecting channel, a refrigerating channel and a gas outlet channel through valve assemblies. According to the utility model, unnecessary parts are omitted, and only the particulate matter filter, the pressure buffer tank, the pressure controller, the purifier and the parallel gas conveying pipeline are reserved, so that the volume of the equipment is effectively reduced while the gas purity and the pressure stability are ensured, and the whole structure is more compact; and three different lines are arranged to carry out pipeline purging, gas leakage detection and gas conveying work respectively, so that normal operation of the refrigerating machine is guaranteed, the service life of a product is greatly prolonged, and the reliability of the product is greatly improved.

The invention discloses a reaction kettle device for synthesis of an iron phosphate material, and particularly relates to the technical field of synthesis of battery materials, and the device comprises a kettle body, a driving motor, a transmission disc and a turbo-type paddle. A sealing cover is arranged at the top of the kettle body, a driving motor is connected with a rotating shaft, an anchor blade is arranged below the rotating shaft, and the bottom realizes turbine blade lifting and sleeve guide limiting through transmission of a piston cavity and compressed gas; and a ratchet wheel on the outer wall of the rotating shaft is meshed with a pawl in the transmission disc in a one-way mode, and intermittent wall scraping is achieved. According to the device, dead angles are broken through synergistic stirring of the double blades, the mixing uniformity and the reaction rate are improved, materials adhering to the wall are efficiently removed through intermittent wall scraping, the stable reaction environment is guaranteed through multiple sealing, the structure is flexible to adjust, maintenance is convenient and fast, efficient and high-quality synthesis of the iron phosphate material can be achieved, and the device is suitable for industrial large-scale production.

The invention relates to the technical field of vacuum measurement, in particular to a device for expanding the linear range of mass spectrometry measurement, which comprises a gas transmission pipeline, an electromagnetic valve, a small hole and a mass spectrometer, and is characterized in that the front end of the gas transmission pipeline is used for allowing a sample to be measured to enter, and the rear end of the gas transmission pipeline is connected with the mass spectrometer; the middle part of the gas transmission pipeline is divided into three channels, namely a first gas transmission pipeline, a second gas transmission pipeline and a third gas transmission pipeline; the first electromagnetic valve and the first small hole are sequentially arranged on the first gas transmission pipeline, the second electromagnetic valve and the second small hole are sequentially arranged on the second gas transmission pipeline, and the third electromagnetic valve and the third small hole are sequentially arranged on the third gas transmission pipeline. According to the method, manual dilution or segmented sample injection is not needed, a wide concentration range can be covered by single analysis, more than 60% of time cost is saved, and measurement in a dynamic range of 106 is realized.

The invention discloses a wellhead device for gas production and a control system thereof.The wellhead device comprises a gas mine connecting bridge assembly and a gas connecting output mechanism, a sealing lifting sleeve is arranged above the gas mine connecting bridge assembly in a sleeved mode, and a sleeve sealing component is arranged at the top end of the sealing lifting sleeve and connected with a bolt in a sleeved mode; and the top end of the sleeve sealing component is provided with an air pipe head sealing kit which is sleeved by a bolt. According to the device, a structure with a separated state in a lining valve shell is mainly utilized to enable a powerful hydraulic telescopic frame on a top connecting frame to enable a semi-arc plug to ascend and descend, in the ascending and descending operation process, airflow is output through the lining valve shell, the airflow can be in press fit with an adaptive telescopic rod and a stress push plug, and the safety of the device is improved. And the output direction of the lining valve shell can achieve the effect of effectively adjusting the direction, so that when the gas transmission two-outlet valve pipe and the gas transmission three-outlet valve pipe are used for outputting, the effect of continuous working can still be achieved when equipment needs to be maintained.

The invention is suitable for the technical field of gas transmission and distribution and pipe network safety monitoring, and provides a gas pipe network remote valve regulation and control system and method based on intelligent Internet of Things, and the method comprises the steps: obtaining an initial backflow risk value of a target pipeline region and historical data of a downstream pipe section tail end valve corresponding to the target pipeline region, historical data are analyzed, and a plurality of valve turn-off action samples meeting stable working conditions are extracted; according to the method, a conjoint analysis mechanism based on the difference between the valve turn-off action duration change trend and the valve front pressure micro-drop value is constructed, and a correction factor generation mode of slope deviation judgment and the pressure micro-drop relative difference rate at a specific time node is introduced for the first time; and dynamic perception of the evolution state of the sealing performance of the tail end valve is realized.

The invention discloses a multifunctional sample test tube preservation box for water quality detection, and belongs to the technical field of preservation boxes, the multifunctional sample test tube preservation box comprises a box body and a box cover which are fixedly connected through a lock catch in a sealed mode, a partition plate is fixedly installed on the inner side of the box body and the inner side of the box cover, and a balance weight ball is movably installed in the center of the partition plate; the upper end of the balance weight ball is elastically and telescopically connected with a center column, a bracket is fixedly installed on the outer side of the lower portion of the center column, meanwhile, supporting adsorption assemblies are evenly arranged on the bracket, a positioning frame is fixedly installed on the outer side of the upper portion of the center column, limiting rings are evenly arranged on the positioning frame, and an air conveying assembly is arranged below the partition plate. According to the multifunctional sample test tube storage box for water quality detection, test tubes can be buffered and adjusted in a self-adaptive mode, the inner side of the box body can be automatically pressurized in the adjusting process, it is avoided that sealing plugs at the upper ends of the test tubes are loosened and consequently samples are poured, automatic oscillation can be conducted when the test tubes are taken, and the follow-up detection precision is ensured.

The invention discloses a natural gas station process modeling simulation system based on artificial intelligence, and relates to the technical field of modeling simulation. Comprising the steps that a simulation construction module recognizes geometric features and constructs a simulation data set by conducting global point cloud collection on the gas transmission pipe network; the grid division module is used for acquiring a simulation data set, setting boundary conditions, establishing a fluid simulation field and performing multi-scale grid division; the reconstruction extraction module identifies a torsional weight error region through a clustering algorithm by constructing a grid feature group; a working condition reproduction module performs working condition coupling analysis on the torsion weight error region, judges working condition applicability and splits a grid feature group; the simulation optimization module identifies the linkage effect, extracts a linkage optimization group and optimizes an adjustment strategy, simulation precision and efficiency are improved, and an optimized solution is provided for process modeling and simulation of a natural gas station.

The invention provides an intelligent gas pipeline distribution control method, an Internet of Things system and a medium. The method comprises the steps of obtaining historical use data of a terminal user of a target pipeline; based on the historical use data, determining a distribution demand sequence; generating a gas distribution instruction based on the distribution demand sequence so as to adjust distribution control parameters of a distribution control device in the target pipeline; historical monitoring data and initial gas supply parameters of a gas supply source are obtained; based on historical monitoring data, determining a gas consumption peak period; in response to the fact that the gas transmission time point is in the gas consumption peak period, determining peak regulation parameters of the target pipeline based on the branch transmission demand sequence and the initial gas supply parameters; and generating a peak regulation and distribution instruction based on the peak regulation parameter so as to control a distribution control device in the target pipeline to carry out distribution and peak regulation operation according to the peak regulation parameter. Intelligent control over gas pipeline branch conveying control is achieved, and the stability and efficiency of gas supply are improved.

The invention discloses a gas lift reverse circulation drilling starting pressure and circulation gas supply pressure calculation method. The method comprises the following steps that S1, hydrostatic pressure of the bottom of an inner pipe of a double-wall drill rod is calculated; s2, calculating the friction loss pressure of compressed air of an outer annulus of the double-wall drill rod; s3, calculating the friction loss pressure of the compressed air flowing through the earth surface gas transmission channel; s4, calculating the local pressure loss of the compressed air passing through the orifice in the gas-liquid mixer from the outer pipe of the double-wall drill rod; s5, calculating the liquid phase flow friction pressure loss of the inner pipe of the double-wall drill pipe; s6, calculating the liquid-phase flow friction pressure loss of the deslagging pipeline; s7, calculating the three-phase flow pressure drop of the inner pipe of the double-wall drill pipe; and S8, the starting pressure and the circulating air supply pressure are calculated. According to the method for calculating the starting pressure and the circulating gas supply pressure of the gas lift reverse circulation drilling, the starting pressure and the circulating gas supply pressure of the gas lift reverse circulation drilling can be accurately and conveniently calculated by accurately calculating the pressure of each part of the gas lift reverse circulation drilling process, and a theoretical basis is provided for stable and efficient operation of a circulating system.

The invention provides a power transmission and distribution-gas integrated energy system fault evolution analysis method under an extreme typhoon disaster, and the method comprises the steps: calculating the time-varying fault probability of a power transmission and distribution network element based on a mechanical stress model of a typhoon wind-rain load, and generating an initial cut-off set through Monte Carlo sampling; through transmission-distribution network coupled affine load flow calculation, a serious overload line caused by load flow transfer is identified, and protection removal is executed; a dynamic affine model is adopted to analyze a power transmission and distribution-gas load shedding strategy, a natural gas pipe storage equation and electricity-gas coupling equipment operation constraint are combined, the influence of power line on pressure fluctuation and pipe storage change of a natural gas system is quantified, and overload power of a general overload line is balanced; processing a bilinear term, and converting non-convex constraint by adopting rotation second-order cone relaxation; and in combination with coupling operation constraints of an electrically-driven compressor, a gas turbine and power-to-gas equipment, a natural gas system fault propagation risk caused by power line breaking and power transmission and distribution-gas load shedding is quantified.

The invention relates to the field of pipeline internal crack detection, in particular to an oil and gas transmission pipeline internal crack detection method based on an improved YOLOv8 model. The method comprises the following steps: inputting a picture of the inner wall of a to-be-detected oil and gas transmission pipeline into a trained improved YOLOv8 model, and detecting whether an internal crack exists or not; wherein the improved YOLOv8 model is characterized in that a backbone network of the improved YOLOv8 model introduces a selective denoising enhancement module for deep features so as to eliminate noise in a background; and the neck network introduces a detail information enhancement module for the fused feature map so as to combine low-level information and high-level information to carry out detail information enhancement. According to the invention, important features can be selectively enhanced, and effective detail information is extracted, so that accurate detection of cracks in the oil and gas transmission pipeline is realized.

The invention relates to the technical field of gas collection and monitoring, in particular to a gas collection, monitoring and early warning method and system, and the method comprises the steps: obtaining the scene information of gas transmission and distribution, collecting the gas concentration and the air pressure value at a valve in real time according to the scene information, and synchronously recording the monitoring position on each path; outputting an early warning parameter combination and a trigger time period based on the parameter overlapping and association form of the monitoring position; all early warning parameter combinations are integrated, clustering is carried out according to the spatial distance between the monitoring positions, and early warning classification is obtained; according to a trigger time period of early warning, counting the early warning times of each early warning classification in unit time, generating an early warning trend curve, and calling key difference points of early warning trend change to form a difference feature set; and quantizing a common pattern of the difference feature set, identifying associated parameters strongly related to early warning classification, and updating the monitoring index according to the scene-position dimension corresponding to each associated parameter. The accuracy and the response timeliness of fuel gas early warning are realized.

The invention relates to the field of printing processing drying, in particular to an intelligent identification printing processing drying machine which comprises a drying cabin. A mounting frame is fixedly connected in the drying cabin; a rotating frame is rotationally connected into the mounting frame; and a gas transmission channel structure is arranged in the rotating frame. According to the printing processing drying machine with the intelligent recognition function, the feeding state of printed matter is actively recognized through an image intelligent recognition module in the drying cabin, and a conveying rotary drum on a rotary frame is matched with a main suction plate to adsorb the fed printed matter; then the rotating frame drives all the printed matters adsorbed on the conveying rotary drum to rotate, hot air flow is blown to the surfaces of all the printed matters through air injection holes in the conveying rotary drum, the printed matters are dried, and meanwhile the moving straightening mechanism straightens and flattens the printed matters from the back faces of the printed matters; the defect that wrinkles are enlarged due to the shaking phenomenon caused by the fact that heat pump type drying equipment blows the surfaces of the printed matters is overcome.

The invention provides a swing gas transmission mechanism based on a metal tube spring. The swing gas transmission mechanism comprises the metal tube spring, a tooth-shaped supporting structure and a tooth comb support. A plurality of supporting columns of the tooth comb bracket are arranged along the circumferential direction; tooth-shaped supporting structures protruding outwards in the radial direction are distributed on a supporting column of the tooth comb support in the axial direction. Gaps exist between the tooth-shaped supporting structures in the axial direction, and the metal tube spring penetrates through the gaps and is supported. The metal tube spring is of a hollow structure and is provided with an inlet and an outlet. The metal pipe spring is provided with a spiral pipeline part, and the spiral pipeline part is arranged on the outer side of the tooth comb support in a surrounding mode through the gap. The invention provides a structural combination of a single metal spiral pipeline and a comb-shaped support, and the process difficulty of multi-pipe binding and winding is reduced.

The invention discloses an endoscopic robot for a high-pressure pipeline of a compressed air energy storage system, and mainly relates to the technical field of pipeline robots. Comprising a storage bin arranged on the outer wall of a vertical gas conveying pipeline, a window communicated with the storage bin is formed in the vertical gas conveying pipeline, a winch and a linear translation mechanism used for driving a lifting frame to translate are arranged in the storage bin, and a pulley assembly matched with a steel wire rope of the winch is arranged on the lifting frame. A pipeline robot is arranged at the end, away from the winch, of the steel wire rope, inspection equipment is carried on the pipeline robot, an end cover used for sealing the window is arranged at the end, away from the linear translation mechanism, of the lifting frame, and the pipeline robot is hung on the lifting frame. The pipeline robot is adjusted into the storage bin or the vertical gas conveying pipeline through the linear translation mechanism; the pipeline inspection requirement in the vertical gas transmission pipeline can be met, it is ensured that the defects of the inner wall of the pipeline are found in time, and healthy operation of the compressed air energy storage system is ensured.

The utility model discloses an air channel mechanism of an offset shaft rotor aerostatic press. The air channel mechanism comprises a rotating assembly and an air conveying assembly. The rotating assembly comprises a rotating shaft, a rotor and a sealing connecting assembly; the rotating shaft is in transmission connection with the rotor through the sealing connection assembly; the gas transmission assembly is installed at the end, away from the rotating shaft, of the sealing connection assembly. The rotating shaft is a hollow shaft; an air inlet hole is formed in the rotating shaft; the sealing connection assembly is provided with a conversion hole and an air conveying hole. An air supply hole is formed in one end of the rotor; an air inlet hole is formed in the other end of the rotor; a one-way valve is arranged in the air inlet hole; the output end of the one-way valve is communicated with the gas transmission component through the gas transmission hole; the air compressor omits a crankshaft mechanism, is convenient to manufacture and maintain, simple in structure, small in size, stable and lasting in operation, quiet in operation and wide in application range, and converts the rotary motion of the rotor into compressed gas to be output as a power source.

The invention relates to the technical field of breathing assisting devices, in particular to an intelligent temperature-control humidifying breathing critical patient assisting breathing nursing device which comprises a global perception fusion central system used for constructing a high-frequency biological characteristic thermodynamic map analysis layer and generating a particulate matter deposition energy level distribution model; forming a composite feature matrix; the self-adaptive airflow modulation matrix system is used for implanting a multi-order recursive calibration engine on the basis of a composite characteristic matrix, a spanning compensation strategy is generated through vectorization processing of a clinical characteristic curve, and a viscous resistance spectrum variation value of an expiratory phase triggers a self-consistent conversion mechanism every time; a dynamic balance point of an aerosol dispersion speed and a water molecule phase change threshold value is autonomously balanced, and a nanoscale lubricating interface of a gas transmission channel is maintained in real time; and the hierarchical response execution network system is used for designing a three-phase interlocking decision tree structure based on a thermodynamic energy level envelope line output by the compensation strategy. According to the invention, a brand new clinical response form exceeding linear control is constructed.

The invention relates to a shale or coal rock gas evaluation method based on a gas-water two-phase flow isotope fractionation model. The shale or coal rock gas evaluation method comprises the following steps: 1, collecting data; 2, establishing a gas well model; 3, establishing a control equation set; 4, coupling the influence of the real gas effect and the effective stress; 5, establishing a gas transmission model and a relative permeability model; 6, establishing a relation between capillary pressure and saturation; 7, considering critical desorption pressure; 8, setting boundary conditions of initial conditions; 9, solving a control equation set; 10, calculating production dynamic parameters and isotope values; 11, performing history fitting; 12, verifying historical fitting quality; 13, predicting productivity; 14, calculating a gas dynamic output proportion; 15, identifying a fractionation inflection point and gas production mechanism conversion; by coupling gas-water two-phase flow, multiple gas transmission mechanisms, stress sensitivity and methane isotope competitive adsorption theories, yield prediction of the deep reservoir and quantitative evaluation of the dynamic proportion of produced gas are realized.

The invention relates to the technical field of power cables, and provides an anti-electromagnetic interference waterproof cross-linked polyethylene insulated power cable, which comprises a plurality of conductor cable cores, a shielding sleeve layer, an outer protective sleeve layer and an end sealing gas transmission mechanism, and is characterized in that the periphery of each conductor cable core is sleeved with an insulating protective sleeve group capable of transmitting gas; the insulation protection sleeve set comprises a plurality of gas transmission short pipes, the conductor cable core is arranged in the shielding sleeve layer, a water swelling rubber layer is arranged between the insulation protection sleeve set and the shielding sleeve layer, the shielding sleeve layer is sleeved with the outer protection sleeve layer, and the end sealing gas transmission mechanism can be arranged on one side of the outer protection sleeve layer in a sealed mode. And meanwhile, cooling gas can be conveyed into the gas conveying short pipe. According to the technical scheme, the problem that the anti-electromagnetic interference waterproof cross-linked polyethylene insulated power cable in the prior art is poor in heat dissipation efficiency in actual use is solved.

The invention discloses a temperature control device of a waste gas inlet pipeline and a waste gas treatment device. The temperature control device comprises a first sleeve, a second sleeve, a first temperature control gas inlet pipeline, a temperature control gas transmission pipeline and a temperature control gas outlet pipeline. The first sleeve is arranged on the periphery of the first waste gas inlet pipeline in a surrounding manner, and a first preset gap is formed between the first sleeve and the first waste gas inlet pipeline; the second sleeve is arranged on the periphery of the second waste gas inlet pipeline in a surrounding manner, and a second preset gap is formed between the second sleeve and the second waste gas inlet pipeline; the first temperature control gas inlet pipeline is communicated with one end of the first sleeve and provides temperature control gas for the first preset gap; one end of the temperature control gas transmission pipeline is communicated with the other end of the first sleeve, the other end of the temperature control gas transmission pipeline is communicated with one end of the second sleeve, and temperature control gas is provided for the second preset gap; and the temperature control gas outlet pipeline is communicated with the other end of the second sleeve so as to lead out temperature control gas.

The embodiment of the invention discloses an oil and gas transmission monitoring method and system based on artificial intelligence AI. The method is executed by an edge controller of the oil and gas conveying system, and comprises the following steps: acquiring state parameters of conveying equipment of the oil and gas conveying system; generating a first feature map according to the state parameters of the conveying equipment of the oil and gas conveying system; wherein the first feature map is a three-dimensional feature map; the first feature map is formed by sequentially combining and stacking a plurality of two-dimensional feature maps; one two-dimensional feature map corresponds to one conveying device; generating a second feature map according to the first feature map; the second feature map is a three-dimensional feature map; the sorting of the feature elements in the second feature map is different from that of the feature elements in the first feature map; and generating a primary monitoring result according to the first feature map and the second feature map.

The invention relates to a carbon dioxide combined cooling heating and power supply system, which realizes liquid carbon dioxide energy storage and combined cooling heating and power supply through the technologies of liquid carbon dioxide energy storage, Brayton expansion power generation or pressure increasing heating, carbon dioxide variable-capacity stable-pressure storage and gas transmission, and provides a new energy source for safe and long-period operation and large-scale or small-scale application of an energy storage device. An efficient and feasible technical path is provided for'valley shifting and peak filling 'of photovoltaic power, wind power and a power grid, and the method is suitable for various application scenes such as subway stations, large shopping malls, refrigeration houses or large electricity users.

The invention discloses a multi-stage self-triggering type liquid carbon dioxide grading fracturing method. The method comprises the following steps that early-stage preparation work is conducted on a multi-stage self-triggering type fracturing pipe; liquid carbon dioxide is filled into the multi-stage self-triggering type fracturing pipe; the multi-stage self-triggering type fracturing pipe is placed in a drill hole in the target fracturing position and then connected with an exploder; the exploder is started, and the multi-stage self-triggering type fracturing pipes conduct multi-stage fracturing in sequence; and after fracturing is completed, the multi-stage self-triggering type fracturing pipe is recycled for reuse. The grading self-triggering fracturing device is constructed on the basis of the gas transfer rule and the memory alloy material, the liquid carbon dioxide single-point excitation and multi-stage self-triggering grading fracturing method is provided, and the problems that power of a liquid carbon dioxide fracturing single pipe is insufficient, and wiring of multiple pipes is complex are solved.

The present invention discloses a solid-state source gasification device, comprising a housing and one or more trays, a top cover is provided on the top of the housing. A gas inlet and a gas outlet are provided on the top cover. The trays are vertically stacked in the housing. A carrier gas pipe is provided in the housing. An upper end of the carrier gas pipe is connected to the gas inlet. The carrier gas pipe penetrates through the trays, and extends into the bottommost-layer tray. One or more carrier gas outlets are formed in the carrier gas pipe. The carrier gas outlets are formed in a space of the bottommost-layer tray or formed in a space of the bottommost-layer tray and the rest trays. Except for the bottommost-layer tray, the rest trays are each provided with one or more gas conduits. The solid-state source gasification device of the present invention adopts a parallel gas transmission channel, whereby the carrier gas, after entering the carrier gas pipe from the gas inlet, can enter into each tray separately, and can be transmitted horizontally in each tray along the surface of the solid-state source material for a longer distance before reaching gas conduit, and thus a large amount of gasification gas can be carried in the carrier gas to enhance the overall gasification efficiency of the solid-state source gasification device.

The invention discloses a porous material embedded micro-channel structure polar plate suitable for a fuel cell, and belongs to the technical field of fuel cells. The porous material embedded micro-channel structure polar plate suitable for the fuel cell is provided with a flow field groove, a porous flow field is arranged in the flow field groove, the porous flow field is a porous material with a continuous pore structure, and a micro-channel forming a gas transmission path is processed on the surface of the porous material. The continuous pore structure of the porous material forms a liquid water transmission path under the action of capillary force, so that the uniformity of gas distribution in a flow field is improved, meanwhile, water accumulation possibly occurring in a traditional flow channel is effectively avoided, the thickness and the volume of the fuel cell are greatly reduced, the power density can be greatly improved, and the service life of the fuel cell is prolonged. The electron transverse transmission distance is effectively shortened, and the ohmic loss is reduced.

The invention provides a stainless steel pickling waste acid recovery device and a using method thereof.The waste acid recovery device comprises a pickling device and a recovery tower, the pickling device comprises a pickling tank and a filter pipe installed at the bottom of the pickling tank, the filter pipe is communicated with the recovery tower, the recovery tower comprises an evaporation barrel, and the evaporation barrel is fixed to the ground; comprising a combustion chamber and an evaporation chamber which are stacked from bottom to top, and gas is introduced into the combustion chamber for combustion to heat the evaporation chamber; waste acid in the pickling tank is filtered by the filter pipe and enters the evaporation chamber to be heated and evaporated; a catalysis disc, a spraying section and a cooling section are sequentially arranged above the evaporation chamber in a stacked mode, the evaporation chamber is communicated with the cooling section through a gas conveying pipe, the cooling section is communicated with the spraying section arranged below, and cooled waste acid steam enters the spraying section to be mixed with rinsing water. Waste acid steam of nitric acid and hydrofluoric acid absorbed by the rinsing water flows downwards to enter the catalytic disc for reaction. According to the waste acid recovery device provided by the invention, the structure is simplified, and the waste acid recovery efficiency and recovery rate are improved.

The invention discloses a multifunctional sitting moxibustion instrument, and belongs to the technical field of physiotherapy equipment, the multifunctional sitting moxibustion instrument comprises a square main body, a cross-shaped breathable soft cushion, an external fan, a moxa cone heating assembly, four shell-shaped air bags, an air transmission switching assembly and a partition assembly, an upper cover is concavely formed with a first flue groove, and the breathable soft cushion covers an upper groove opening of the first flue groove; the four shell-shaped air bags are distributed in second flue grooves formed in the four vertex angle positions of the upper cover in a sunken mode, the portions, facing the center of the upper cover, of the shell-shaped air bags are contact cambered surface portions, the portions, deviating from the center of the upper cover, of the shell-shaped air bags are supporting right-angle surface portions, and the contact cambered surface portions are provided with a plurality of smoke outlet holes. Every two adjacent shell-shaped air bags are communicated through a first air inlet pipe. The external fan is connected with the gas conveying switching assembly through a second gas inlet pipe, and the gas conveying switching assembly is used for conveying gas to the first flue groove and one shell-shaped gas bag. The partition assembly is used for blocking gas transmission of one of the first gas inlet pipes. The application effect of the sitting moxibustion instrument can be improved.