558 results about "Gas compressor" patented technology

The invention relates to an oil-proof emulsification control method and system for an air compressor of an urban rail vehicle, and solves the problem of lubricating oil emulsification caused by insufficient working efficiency of the air compressor and environment humidity change by constructing a comprehensive control system comprising the compressor, an oil-proof emulsification device and a controller. The system monitors lubricating oil temperature and environment humidity in real time through a temperature sensor and a humidity sensor; the working rate of the air compressor is accurately calculated, wherein the vehicle operation time t2 takes the operation speed larger than 10 km / h as the calculation starting point; the controller comprehensively judges whether the oil-proof emulsification device is started or not based on temperature, humidity and working rate data, and the control strategy comprises the step of dynamically adjusting the working rate judgment node according to the real-time temperature and humidity. According to the method, accurate and reliable control over the oil-proof emulsification process is achieved, emulsification of the lubricating oil is effectively prevented, and energy consumption and maintenance cost can be reduced.

A foamed liquid dispensing system includes a container for receiving a liquid to be dispensed connectable to, and removable from, a gas charging unit. The gas charging unit includes a gas compressor, gas pressure sensing means, a control unit and a user interface. The user interface permits a user to input a desired final gas pressure from a minimum value to a maximum value in discrete steps. The control unit instructs the gas compressor to charge the container with gas to the desired final pressure. The gas pressure is continuously monitored and the flow of gas into the container is stopped once the desired final gas pressure has been reached. The user interface displays the gas pressure in the container as the charging cycle proceeds. Once charged with gas and removed from the gas charging unit, the container substantially retains the final desired gas pressure until the liquid is dispensed.

The invention relates to a methanol internal combustion engine high-temperature fuel cell hybrid power system based on double-path waste heat gradient utilization. The invention relates to the technical field of internal combustion engine waste heat recovery and new energy power system integration. The system comprises a fuel tank, a first pump body, a heat exchanger, a methanol internal combustion engine, a turbine, a gas compressor, an air compressor, a reformer, a high-temperature proton exchange membrane fuel cell, an evaporator and a second pump body. A methanol-water vapor mixture generated by heat exchange of a mixed solution of methanol and water and a high-temperature fuel cell stack coolant in a heat exchanger is introduced into a reforming reactor and is subjected to catalytic reforming to produce hydrogen by utilizing waste heat of high-temperature tail gas of an engine, and the produced hydrogen is directly supplied to an anode of a high-temperature fuel cell. Through a double-path methanol distribution strategy, collaborative design of internal combustion engine waste heat recovery, electric pile heat management and reforming hydrogen production is realized, and the comprehensive energy efficiency of the system is improved.

A light-weight gas compressor convenient to move relates to the field of gas compressors, and is characterized in that three forward cylinders and three reverse cylinders which are arranged in a staggered manner are uniformly fixed on the outer edge surface of an annular plate; the forward air cylinder B is connected with the reverse air cylinder A, the reverse air cylinder A is connected with the forward air cylinder A, the forward air cylinder A is connected with the reverse air cylinder B, the reverse air cylinder B is connected with the forward air cylinder C, the forward air cylinder C is connected with the reverse air cylinder C, and the reverse air cylinder C is connected with an exhaust pipe; the power of the double-end piston rod hydraulic oil cylinder is provided by an oil supply hydraulic oil cylinder A and an oil supply hydraulic oil cylinder B; the double-end piston rod hydraulic oil cylinder arranged in the annular plate is used for controlling the three reverse air cylinders and the three forward air cylinders to achieve gas compression, and the purpose of gas compression which is light in weight and convenient to move is achieved.

The invention relates to a surge margin prediction method and device of a gas compressor, equipment and a storage medium. The method comprises the steps that key parameter point sets obtained through load step iteration of the gas compressor in all the operation stages are obtained, all the key parameter point sets are mapped to performance diagrams of temperature identification to obtain corresponding mapping performance diagrams, discrete points in the same temperature layer in all the mapping performance diagrams are fitted, and the corresponding mapping performance diagrams are obtained; and the thermal state performance curves of the gas compressor in all the operation stages are determined, the surge critical points of all the thermal state performance curves are obtained, the predicted surge margin of the gas compressor in all the operation stages is determined according to the surge critical points of all the thermal state performance curves and all the key parameter point sets, and load step iteration is achieved based on multi-physics field coupling of the gas compressor. By adopting the method, the surge margin of the gas compressor in different operation stages can be predicted based on the key parameter point set obtained by load step iteration realized by considering multi-physics field coupling in each operation stage of the gas compressor, so that the accuracy of a prediction result is improved.

The invention relates to a low-concentration combustible gas concentration system and an operation method thereof, and the low-concentration combustible gas concentration system comprises a flame arrester, a mixing cavity, a non-combustible gas supplementing tank, a gas compressor, a primary separator, a light component secondary separator, a heavy component secondary separator and a concentration regulating valve, the premixed gas sequentially passes through a primary separator, a light component secondary separator and a heavy component secondary separator under the action of a gas compressor to carry out concentration operation on light component combustible gas, non-combustible gas is returned to a mixing cavity, and heavy component gas is discharged into the atmosphere; the invention aims to solve the technical problems of large occupied area and volume, low operation efficiency and poor separation effect of the existing combustible gas separation equipment.

The invention discloses a standby power supply system, and relates to the technical field of transformer substation power supply, a hydrogen production module is used for producing hydrogen by using commercial power or renewable power and then storing the hydrogen in a high-pressure gas storage tank of a hydrogen storage module, and the hydrogen storage module is provided with a one-way valve for the hydrogen to pass through in one way and a gas compressor for compressing the hydrogen to realize hydrogen conveying; after hydrogen stored in the hydrogen storage module is subjected to power generation through a fuel cell through the power generation module, the hydrogen is input into a storage battery pack of an uninterruptible power supply system of the transformer substation, and in the whole process, the control module detects the state of a main power supply and controls starting and stopping of the power generation module. The hydrogen production rate of the hydrogen production module and the hydrogen storage pressure of the hydrogen storage module are controlled, only water is generated in the power generation process, harmful emission is avoided, direct current generated by the fuel cell is directly matched with a UPS storage battery direct current bus, the response speed is high, conversion loss is reduced, the energy utilization efficiency is improved, the system automation degree is high, and the operation and maintenance cost is low.

The invention belongs to the technical field of gas compressors, and discloses an electric power carbon emission accurate measurement and optimization method based on artificial intelligence, and the method comprises the steps: data collection and processing: collecting historical power generation, load, tidal current and carbon emission data, and carrying out the cleaning and standardization; training a dynamic carbon emission factor model, training a carbon emission factor prediction model of each thermal power generating unit by using historical data, and predicting by using the carbon emission factor prediction model to obtain a dynamic carbon emission factor; and training a GNN carbon flow model, and training the GNN model to estimate node carbon intensity by using the power grid data and the dynamic carbon emission factors. According to the invention, two core problems of inaccurate measurement and difficult optimization of the carbon emission of the electric power system are solved. Accurate carbon perception is realized through a dynamic carbon emission factor and a GNN carbon flow model, and an optimal scheduling strategy considering economy, safety and low carbon is searched in a complex power grid environment through reinforcement learning.

The invention provides an aircraft component fault intelligent diagnosis and maintenance control system, and relates to the technical field of aircraft component diagnosis. A stall modeling module of the system establishes an aeroelastic coupling equation for quantifying stall behaviors on the basis of collected pressure disturbance data of an air inlet flow field of an air compressor and blade row vibration response information. The elastic response deduction module discretizes the equation through a state conversion operator and then embeds the equation into a graph neural network node update function. The graph embedding coupling recognition module recognizes blade tip gap mutation behaviors induced by local stall and time sequence precursor characteristics of the blade tip gap mutation behaviors by using a node state evolution trajectory output by the graph neural network, and constructs a surge precursor evolution path. And the early warning output module carries out instability trend judgment on the surge precursor evolution path, and outputs a maintenance suggestion and an early warning identifier aiming at a blade fracture fault, so that the structure failure risk caused by the surge of the gas compressor is effectively predicted, and the accuracy and timeliness of fault diagnosis of aircraft parts are remarkably improved.

The invention discloses an aero-engine complete machine three-dimensional simulation debugging method and device and a storage medium, and belongs to the field of aero-engine aerodynamic thermal simulation. The core of the method is to systematically solve the problem of simulation convergence through a two-stage strategy of component gradient pre-convergence and complete machine dynamic adaptive coupling. And at the component level, steady pre-convergence of the flow field is realized through progressive physical loading and stability control aiming at a gas compressor, a combustion chamber and a turbine. At the complete machine level, dynamic calculation parameter adjustment and flow field stability control based on flow field real-time stability are adopted, and it is ensured that the coupling process is rapid and stable. According to the invention, geometric grid standardization, post-processing verification, variable working condition debugging and real-time monitoring abnormity processing functions are expanded. According to the method, the convergence efficiency, the success rate and the result credibility of simulation are remarkably improved, the calculation interruption rate can be reduced by more than 75%, and the method is suitable for engineering design and optimization of aero-engines.

The invention relates to an air tightness detection device and method based on resonance frequency shift of a resonant cavity, belongs to the technical field of air tightness detection, and aims to solve the problems of high equipment cost, complex operation, low efficiency and difficulty in realizing multi-parameter quantitative detection in the traditional air tightness detection technology. High-purity helium with rated pressure is filled into a to-be-detected piece through a gas compressor, the to-be-detected piece is placed in a volume-adjustable detection container after pressure maintaining, and leaked helium is pumped by a vacuum pump to flow into a resonant cavity; resonance frequency deviation caused by helium concentration changes is monitored, temperature and humidity calibration data are combined, three air tightness parameters including the leakage rate (Pa.m / s), the leakage speed (mL / min) and the leakage pressure (Pa) are calculated in real time through a microcontroller, and the air tightness grade of a to-be-detected piece is output according to the air tightness detection standard. According to the device, the volume of the detection container is adaptively adjusted through the sliding rail, and the detection efficiency and adaptability can be remarkably improved by combining frequency mixing excitation and a rapid frequency calibration technology; according to the method, resonance frequency shift-helium concentration-airtightness parameters are converted, and high-precision, multi-parameter and integrated airtightness detection is realized. The invention has the advantages of fast response speed, strong anti-interference performance, low cost and the like, is suitable for fast automatic leak detection of industrial products such as sealing devices, pressure containers and the like, and provides a new scheme for trace gas detection and gas tightness grading.

The invention provides a control method and system for interaction between emergency simulation training and a real respirator, and the method comprises the steps: collecting control parameters of the respirator, and carrying out the preprocessing of the control parameters, and obtaining an equipment parameter vector; calculating a physiological response state based on the device parameter vector; the physiological response state comprises alveolar pressure and oxygenation estimation; based on the physiological response state, performing quantitative judgment on the disease stage of the patient to obtain a current disease stage, and executing a corresponding evolution instruction set; a medical specification operation reference table is constructed, a target interval is extracted from the current illness state stage and the evolution instruction set, the matching degree of the target interval and a reference interval is calculated, and the reference interval is extracted from the medical specification operation reference table; determining whether to continue evolution, enter relieving or mark training is completed based on the matching degree; the breathing gas of the patient is simulated and restored through the gas compressor and the gas mixing device and is conveyed to the real breathing machine.

The invention relates to the technical field of compressors, and discloses a bottom damping and buffering device for a gas compression machine, efficient damping is achieved through cooperation of multiple structures, the bottom damping and buffering device is provided with a plurality of buffering mechanisms, supporting buffering springs provide basic buffering, universal blocks and universal ball heads are matched to adapt to multi-angle vibration, and through airtight sliding of an upper sleeve and an adjusting rod, the bottom damping and buffering device can achieve damping and buffering. A hydraulic system is combined, hydraulic oil flows to drive a gear to rotate, a rifle sleeve and a rifle rod are driven by a transmission mechanism to adjust the pre-compression amount of an adjusting spring, the damping performance is dynamically adjusted in real time, different vibration working conditions are adapted, meanwhile, a protection mechanism shunts hydraulic oil to avoid leakage when vibration force is too large, and the protection mechanism automatically resets after pressure falls back. The device integrates spring buffering, hydraulic damping and multi-angle adaptation, equipment abrasion and noise are reduced, long-term stable operation is guaranteed, and the maintenance cost is reduced.

The invention relates to the technical field of gas compressor control, in particular to a gas compressor working condition self-adaption frequency conversion control method which comprises the steps that 1, multi-dimensional operation parameters are collected and preprocessed in real time; 2, real-time surge margin calculation and safety boundary dynamic construction are carried out, the real-time pressure ratio and the equivalent correction flow are calculated according to the real-time operation parameters preprocessed in the step 1, a preset compressor characteristic map is inquired, and the real-time surge margin is calculated; step 3, adaptive efficiency optimization and rotating speed decision making based on model prediction; and step 4, smooth issuing and closed-loop monitoring of a frequency conversion instruction: the optimal frequency set value obtained in the step 3 is processed through a smoothing algorithm and then is issued to the frequency converter, and closed-loop monitoring and emergency protection logic processing are carried out in the frequency adjustment process. Through a smooth instruction and closed-loop monitoring, oscillation and unnecessary energy consumption possibly caused in the control process are reduced.

The invention belongs to the field of hydrogen energy, and discloses a hydrogen recovery system and method for a hydrogenation mother station. The system comprises a hydrogen purification device, a product gas and recovery gas compressor, and an integrated pipeline network connecting feed gas, product gas, desorbed gas and a long pipe vehicle. According to the system, through a plurality of recovery paths, hydrogen which is not qualified in purification, desorbed gas and hydrogen replaced in the long pipe vehicle can be recovered to a fuel gas pipe network, a raw material gas inlet or a desorbed gas system respectively, and high-purity hydrogen can be used for carrying out online regeneration on a penetrating adsorbent. According to the invention, comprehensive recovery of the vented combustible gas in the hydrogenation mother station is realized, the hydrogen recovery rate is obviously improved, and the product gas quality and supply stability are ensured.

The invention discloses a device, a method and a system for measuring the mounting angle of an adjustable stator blade of a gas compressor. The device comprises an air floating turntable, a positioning mechanism, a lifting mechanism and a detection mechanism, the positioning mechanism is used for fixing the compressor stator assembly; the lifting mechanism is used for driving the detection mechanism to lift; the detection mechanism comprises a U-shaped measuring rod, a digital display inclinometer, a support plate and a horizontal sliding plate; the horizontal sliding plate is fixed on the lifting mechanism through a first positioning pin; the supporting plate is connected with the horizontal sliding plate through a rotating shaft; the digital display inclinometer is mounted above the support plate through a fixed knob; the U-shaped measuring rod is fixed through the measuring rod positioning knob, and the U-shaped measuring rod is used for detecting the angle of an adjustable stator blade on the compressor stator assembly. Through center line positioning and U-shaped measuring rod design, the operation space is expanded, the process is simplified, the manpower demand is reduced, the detection efficiency is improved by more than 5 times, the precision stability is improved, and the detection cost and the personnel skill requirement are reduced.

The invention provides a rotor turnover device, and relates to the technical field of gas turbine equipment. The rotor overturning device comprises a supporting platform which comprises a first support, a second support and a third support; the two rotating shaft limiting assemblies are respectively fixed on the first bracket and the second bracket; two trunnions are arranged on the switching disc and are respectively embedded into the two rotating shaft limiting assemblies; the transfer hanging ring is fixedly connected with a front journal of the rotor; the limiting rotary supporting plate is fixedly arranged on the third bracket; and a front journal of the rotor is embedded into the limiting rotary supporting plate. The rotor turnover device can perform multi-degree-of-freedom turnover on the gas compressor rotor, one lifting point is reduced compared with a traditional turnover mode, the requirement for the operation ability of operators is weakened, the possibility of risk generation in the rotor turnover process is reduced, and reliable and safe multi-degree-of-freedom turnover work of the gas compressor rotor is achieved. And therefore, the overturning efficiency and safety are improved, and the stability of multi-degree-of-freedom and multi-angle overturning of the gas compressor rotor is improved.

The utility model provides an adjustable stator blade sealing device of an aero-engine, which is characterized in that an external shaft sleeve is arranged on a blade handle and rotates along with the blade handle; the internal shaft sleeve is mounted between the blade handle and the external shaft sleeve, the internal shaft sleeve is provided with a cavity, and a mounting shaft hole of the adjustable stator blade is matched with the cavity; a first sealing structure and a second sealing structure are arranged between the external shaft sleeve and the internal shaft sleeve, and the internal shaft sleeve and the external shaft sleeve are tightly sealed through cooperation of the first sealing structure and the second sealing structure. According to the utility model, a sealing mode of combining gas path sealing and labyrinth sealing is adopted, and the shaft sleeve at the blade handle and the bushing at the shaft hole of the casing are matched for sealing, so that the sealing performance of the gas compressor is improved, the water leakage problem at the VSV blade handle of the gas compressor is effectively reduced, the accuracy of T3 temperature change data is improved, and the reliability of a test result is enhanced.

The invention discloses a gas compressor test device and method, and belongs to the field of gas compressor tests.The gas compressor test device comprises a driver, and a driving shaft of the driver is used for being connected with a main shaft of a gas compressor; the unloading assembly comprises a balance drum, a high-pressure gas supply unit, an exhaust unit and an adjusting valve, the balance drum is used for being connected with a main shaft of the gas compressor and used for being connected with an impeller on the main shaft of the gas compressor, the high-pressure gas supply unit is used for being communicated between the balance drum and the impeller, and the exhaust unit is used for being communicated with the side, away from the impeller, of the balance drum; an inlet temperature sensor, an inlet pressure sensor and a flow sensor are arranged in the double-twisted-wire air inlet channel; an outlet temperature sensor and an outlet pressure sensor are arranged in the annular outlet throttler; and a controller. The technical effects of the invention lie in that the device not only facilitates the independent test of the related gas compressor, but also facilitates the small axial force of the impeller of the gas compressor borne by the thrust bearing.

The invention relates to a vehicle-mounted oxygen generation system, a molecular sieve device, an air conditioner assembly and a vehicle. And the gas compressor is connected with the target gas generation device so as to output gas to the target gas generation device. According to the technical scheme, the applicability of the vehicle in the plateau area is improved.

The invention discloses an aeroengine rotating blade icing prediction method based on machine learning, and relates to multiple technical fields of computational fluid mechanics, heat and mass transfer, multiphase flow simulation, artificial intelligence and the like. The method is used for rapidly and accurately predicting the icing form of the surface of the rotating blade of the aero-engine fan or the gas compressor under different incoming flow working conditions and blade profile parameter conditions. The method comprises the steps that firstly, a parameterized model of a rotating blade is constructed, multiple blade profile and working condition combinations are generated in combination with orthogonal experimental design, and a multi-source icing database is constructed through simulation and experiments; then, an icing prediction model is constructed based on a multi-layer perceptron and a deconvolution neural network, and after incoming flow parameters and blade profile parameters are input, corresponding ice shape images can be output; and finally, model optimization is realized through training and verification, and the recognition and fitting capability of a real ice shape is improved. According to the method, the icing prediction efficiency and precision can be effectively improved, and technical support is provided for anti-icing design and safe operation of the aero-engine.

The invention provides a gas turbine sensor fault diagnosis method and system based on a mathematical model, and the method comprises the steps: determining the parameters of a gas compressor, a combustion chamber, a turbine and a rotor based on the measurement data of a gas turbine sensor, building a gas turbine mathematical model, and building a sensor error correction model; acquiring a measured value of measured data of the gas turbine sensor, and performing error diagnosis on a calculated value output by the error correction model; judging whether the result of the error diagnosis accords with the confidence interval, and if so, judging that the sensor operates normally; and if not, judging that the sensor has a fault, overhauling and debugging, and returning overhauling data to the gas turbine sensor to measure the data. According to the method, the error correction mathematical model is constructed to correct the errors of the sensors of the gas compressor, the combustion chamber, the turbine and the rotor in the gas turbine, and the faulted sensors are diagnosed, so that the problem of measurement errors caused by environmental influence on the sensors is solved.

The invention discloses an anti-abrasion structure for a piston ring of a reciprocating gas compressor, belongs to the technical field of gas compressors, and aims to solve the technical problems that the piston ring of the existing reciprocating gas compressor is easy to abrade, uneven in lubrication, poor in air inlet filtering effect and insufficient in transmission stability. According to the technical scheme, the air compressor is characterized by comprising an air storage tank, a protective shell, a mounting sleeve, a sealing plate, a connector, a rotating circular plate, a driven shaft, a compression assembly, a driving assembly, an air inlet cylinder and a filtering assembly and further comprising an air inlet connector and a connecting pipe; an L-shaped plate and a piston plate are arranged on the side portion of the piston ring and matched with an oil groove and a permeation hole to achieve precise lubrication, the filtering assembly adopts a conical filtering net and a circular filtering cylinder to conduct double filtering and is convenient to disassemble, assemble and clean, the driving assembly is matched with a synchronizing wheel through a servo motor for transmission to guarantee stable operation, and compressed gas is fed into a gas storage tank through a gas inlet connector after being gathered through a connecting pipe.

The invention provides a conversion system and a conversion process for preparing methanol from coke oven gas, and relates to the technical field of processes for preparing methanol from coke oven gas. The conversion system for preparing methanol from coke oven gas comprises an oxygen supply module at least provided with an air separation oxygen supply unit and an oxygen supply compressor which are communicated with each other; a mixing module having at least a first mixing unit and a second mixing unit; and the conversion module is communicated with the first mixing unit and the second mixing unit. Wherein the oxygen supply compressor is further communicated with a liquid oxygen supply unit, and the liquid oxygen supply unit is used for supplementing supplied oxygen; the first mixing unit is communicated with the oxygen supply compressor, and the first mixing unit is communicated with a steam generator and carbon dioxide supply equipment; the second mixing unit is communicated with the steam generator and the coke-oven gas compressor; the first mixing unit is provided with a first heating device; and the second mixing unit is provided with a second heating device. The conversion rate of methanol synthesized from coke oven gas can be improved.

The utility model discloses a pump core of an inflator pump. The pump core comprises a gas conveying mechanism and a gas compressing mechanism, the gas conveying mechanism is provided with a compression cavity; the gas compression mechanism comprises a pump box, a motor and a pump body assembly arranged in the pump box. The pump body assembly comprises a cam structure gear and a piston, and one end of the piston is eccentrically connected to the cam structure gear; a piston disc is arranged at the other end of the piston and is accommodated in the compression cavity; the motor drives the cam structure gear to drive the piston disc to do reciprocating rectilinear motion in the compression cavity, so that gas entering the compression cavity is compressed, and the gas conveying mechanism inflates a product to be inflated. According to the pump core of the inflator pump, the piston is eccentrically arranged on the gear of the cam structure, so that components in the pump box are simpler and more compact, and the size of the pump box is reduced.

A packing case for a gas compressor includes two or more progressive seals and a pressure breaker. At least one of the two or more progressive seals includes one or more seal rings at least partially disposed in the packing cup, and one or backup rings at least partially disposed in the packing cup on the driver-side of the one or more seal rings and configured to inhibit extrusion of at least one of the seal rings. The pressure breaker includes one or more composite rings. At least one of the composite rings includes an inner region including a polymeric material and configured to contact a surface of a piston rod of the gas compressor, and an outer region around the inner region and including a metal.

According to the device, a gas compressor, a gas heater and an atomizing gas pipe form an atomizing gas part, a cooling powder making chamber, a fan, a gas cooler and a cooling gas pipe form a cooling powder making part, and the cooling powder making chamber, the fan, the gas cooler and the cooling gas pipe form the cooling powder making part. The Venturi tube atomizer, the molten metal conveying pipe, the atomization liquid conveying pipe and the molten metal pool form an atomization part, and the molten metal pool is arranged at the lower end of a throat of the Venturi tube atomizer and communicated with the molten metal conveying pipe through the vertically-downward atomization liquid conveying pipe. High-temperature molten metal enters the molten metal pool through the molten metal conveying pipe and the atomization liquid conveying pipe, high-temperature atomization gas is accelerated to pass through the molten metal surface through the throat portion of the Venturi tube atomizer, the molten metal surface is torn off under the supercavitation effect, the molten metal is brought out, and the molten metal is diffused and atomized at a diffusion opening along with the gas to form finer liquid drops. And the atomized gas is brought into the cooling powder-making chamber and is cooled into metal powder by the cooling gas.

The invention belongs to the technical field of ship sailing, and particularly relates to a structure and method for reducing ship sailing resistance. The structure comprises a ship body, a gas compressor is arranged at the bottom in the ship body, an output pipe of the gas compressor is connected with a gas pipe, a gas storage pipe is arranged on one side of the gas pipe, an electromagnetic valve assembly is arranged on the gas storage pipe, and a bubble generating structure is connected to one side of the electromagnetic valve assembly; the lower side of the electromagnetic valve assembly is connected with a bottom bubble structure, bionic layers are arranged on the outer side and the bottom of the ship body, and the bottom bubble structure communicates with the bionic layers. The bubble generation structure comprises a left bubble structure and a right bubble structure, the bubble generation structure and the bottom bubble structure cooperatively generate bubbles, in combination with the resistance reduction characteristic of the bionic layer, a bubble-bionic cooperative resistance reduction mechanism is formed, and the ship navigation resistance is effectively reduced.

This invention pertains to the field of hydrogen energy, specifically a high-carbon, low-hydrogen pressure swing adsorption (PSA) purification process system and method. The system, along the gas flow direction, sequentially includes a carbon-based conversion unit, a heat exchange-cooling-gas-liquid separation unit, a compressor, at least two switchable decarbonization and desulfurization towers, a fine desulfurization tower, a PSA unit, a desorbed gas buffer tank, a desorbed gas compressor, and a fuel gas tank. This invention increases the hydrogen fraction in the feed gas from 30-50% to 50-70% through carbon-based conversion, then removes total sulfur to ≤0.1ppm through multi-stage desulfurization and decarbonization, finally producing fuel cell-grade hydrogen with a purity of ≥99.97% via PSA. Simultaneously, the desorbed gas is pressurized, buffered, and then divided into two stages for reuse. This invention effectively improves hydrogen recovery rate and desorbed gas utilization rate, solving the problems of high energy consumption and adsorbent poisoning in the purification of high-carbon, low-hydrogen by-product gases. It is applicable to various feed gases such as coke oven gas, refinery gas, and methanol tail gas.

The utility model relates to the technical field of gas compressors, in particular to a sealing device of a gas compressor, which comprises a cylinder, a support is fixed on the cylinder, the top end of the support is in threaded connection with a shell, the top end of the shell is in threaded connection with an end cover, and limit blocks are integrally formed on the outer walls of the end cover and the shell. Stop blocks are integrally formed on the outer walls of the support and the shell, pull rods are arranged on one side of the end cover and one side of the shell, first springs sleeve the two pull rods, inserting blocks are fixed to the bottom ends of the two pull rods, a piston rod of the air cylinder is sleeved with the end cover, the shell and the support, a check ring is fixed to the piston rod, and second springs are arranged on the two sides of the check ring; the piston rod is sleeved with two lantern rings, a connecting sleeve is integrally formed in the end cover, a top support is fixed to the bottom end of the connecting sleeve, a first O-shaped sealing ring is arranged in the top support, a bottom support is fixed in the support, and a second O-shaped sealing ring is arranged in the bottom support. The utility model is convenient to disassemble and convenient for subsequent installation.