234 results about "Gas expansion" patented technology

The invention discloses a combustion chamber and turbine guider integrated composite flow channel outlet flow field uniformity evaluation method, and belongs to the technical field of gas turbine pneumatic design. The method comprises the steps that a geometric model of a combustion chamber and turbine guider integrated composite flow channel is built, a combustion chamber function section and a guider pneumatic section are fused through integral pneumatic modeling to form a continuous flow channel, a front section adopts a diffusion structure to form a low-speed combustion area, and a rear section adopts a gradually-shrinking channel to achieve gas accelerated expansion; performing three-dimensional cold-state flow field numerical simulation by adopting a structured grid division and delay separation vortex simulation technology; flow parameters including total pressure, Mach number, airflow angle and vorticity are extracted from the cross section of a flow channel outlet, conversion from a Cartesian coordinate system to a polar coordinate system is carried out, and a uniformly distributed aerodynamic parameter field is reconstructed by using an interpolation algorithm; the directional coupling degree is calculated based on the spatial correlation of the pressure gradient vector and the vorticity vector, and the vortex-pressure coupling entropy production index representing the overall aerodynamic loss of the flow channel is established in combination with the pressure pulsation intensity and the vorticity concentration ratio. According to the method, a three-dimensional evaluation system is constructed by integrating circumferential and radial non-uniformity and entropy production parameters, and accurate quantitative evaluation of flow characteristics and uniformity of the combustion chamber and turbine integrated structure is realized.

The invention relates to the technical field of energy storage, in particular to an energy storage system and a heat storage and temperature adjustment method of the energy storage system. The energy storage system comprises a gas storage, a gas compression device and a gas expansion device; the gas storage is coupled with a first heat storage device, at least one part of the first heat storage device is arranged in the gas storage, and the first heat storage device exchanges heat with a gas medium in the gas storage; the gas compression device is connected with a gas inlet of the gas storage; the gas expansion device is connected with a gas outlet of the gas storage; when the gas medium enters the gas storage, the gas medium in the gas storage exchanges heat with the first heat storage device, so that the temperature of the gas medium is reduced; and when the gas medium is discharged out of the gas storage, the gas medium in the gas storage exchanges heat with the first heat storage device, so that the temperature of the gas medium rises.

The invention belongs to the technical field of waterproof cutting lamps, and discloses a waterproof cutting lamp for stage atmosphere treatment, which comprises a base, the top end of the base is rotatably connected with a rotating seat, the interior of the rotating seat is rotatably connected with a waterproof cutting lamp body, and the outer side of the waterproof cutting lamp body is provided with a sealing cover through a screw. A waterproof groove is formed in the edge of the inner wall of the sealing cover, a sealing gasket is arranged on the inner wall of the waterproof groove, bonding pieces are bonded to the two sides of the sealing gasket and bonded to the interior of the sealing cover, a lifting strip is vertically and movably connected to the interior of the sealing cover, and a pressing plate is vertically and movably connected to the middle of the lifting strip. The two sides of the lifting strip are movably connected with side pressing plates in the inclined direction, the sealing cover is tightly matched with the waterproof cutting lamp body, the inner pressing plate, the side pressing plates and other components work cooperatively, water invasion is effectively prevented, it is ensured that equipment stably operates in the humid environment, the sealing effect is further enhanced through gas flowing and an extrusion mechanism, and the service life of the equipment is prolonged. And meanwhile, the waterproof reliability is improved by utilizing a gas expansion principle.

The invention relates to the technical field of soil and groundwater pollution remediation, in particular to a polluted groundwater source controlling and breaking system suitable for limited space of an industrial accumulation area, which comprises a main well, a gas stripping circulating unit and a groundwater circulating unit. A blocking device composed of a packing rubber structure and a driving device is arranged in the main well, the packing rubber structure is driven by the driving device to move and intermittently inject air to expand, and an air flow channel which is dynamically opened and closed is formed between the inner wall of the main well and the unsaturated area. The vacuum pump device builds negative pressure on the upper portion of the main well, so that purified clean gas enters an unsaturated area in an intermittent pulse mode through the peripheral injection well, and soil gas is induced to flow in an oscillating mode under cooperation of the dynamic gas flow channel. Groundwater extracted by the centrifugal pump is purified by the gas stripping area and the underground activated carbon filtering device and then is discharged into the top of the unsaturated area through the drainage device in an intermittent wave mode, the system is suitable for pollution treatment in the limited space of the industrial accumulation area, and targeted source control and long-acting reduction are achieved.

The subject matter of this specification can be embodied in, among other things, a subsea energy recovery system for generating electric power that includes an inlet flow line configured to couple to a subsea tree of a subsea gas well to receive gas produced from the subsea gas well, and a subsea electric power generation system, the subsea electric power generation system configured to reside subsea on a subsea production site of the subsea gas well and including a turbine wheel configured to rotate in response to expansion of the gas, a rotor configured to rotate with the turbine wheel, a stationary electric stator, the rotor and electric stator defining an electric generator configured to generate current, and a hermetically sealed housing enclosing the turbine wheel, the rotor, and the electric stator and hermetically sealed inline in the first flow line.

The embodiment of the invention provides an environment-friendly gas insulation ring main unit, and relates to the technical field of ring main units. The environment-friendly gas insulation ring main unit comprises a cabinet body, a cooling assembly and an air pressure balance assembly. An insulating chamber is arranged in the lining box; the liquid outlet end of the circulating pump is connected with one end of the heat conduction pipe, and the other end of the heat conduction pipe is connected with the liquid inlet of the container; a supporting block is installed in the piston cylinder through a supporting structure, the lower end of the spring is connected with the supporting block, and the upper end of the spring is connected with the piston. The pressure reducing and stabilizing device plays a role in reducing and stabilizing the pressure in the insulation chamber, so that the pressure in the insulation chamber is kept stable, the phenomena that the cabinet body of the insulation chamber is deformed due to gas expansion and the sealing and the structural safety of the insulation chamber are influenced are avoided, and meanwhile, when arcing faults such as improper inflation and misoperation occur, the impact generated by instantaneous pressure increase generated by detonation can be buffered, and the service life of the insulation chamber is prolonged. Therefore, the cabinet body is protected, and subsequent use of the cabinet body is prevented from being affected.

The invention belongs to the technical field of material forming and manufacturing, and discloses a hot gas expansion-explosion composite forming method for forming a complex deep-cavity thin-wall component. According to the hot air expansion-explosion composite forming method, a mold unit, an air pressure loading unit and an explosion unit are needed; the method comprises the following steps: mold preheating; feeding and die assembly are carried out; compressed air is filled, and pre-expansion is carried out; fuel is sprayed, and explosion forming is conducted; releasing pressure; and opening the mold and taking the part. The method has the advantages that hot gas bulging forming utilizes metal high-temperature plasticity and evenly-distributed flexible air pressure loading, and the plate forming performance is improved; explosive forming has a very high deformation rate, high plastic deformation can be achieved within a very short time, and the forming performance of the plate can be further improved through the combined action of the strain rate effect and the inertia force. According to the method, the plastic deformation capacity of the material can be remarkably improved by combining the two, and forming of the complex deep-cavity thin-wall component is facilitated.

The invention relates to the technical field of automobile detection, and discloses an active temperature OBD fuel oil detection system which comprises a valve control module, a thermodynamic excitation module, a multi-source sensing module, a diagnostic logic module and an OBD communication module. By arranging a thermodynamic compensation end, when the sealing performance of the fuel system is detected, differential detection parameters are intelligently set according to different environment temperatures by constructing a temperature self-adaptive pressure regulation and control mechanism. When encountering a low-temperature environment, the system automatically increases the target pressure value, prolongs the heating time, and improves the gas expansion efficiency. The technology can eliminate the interference of the environment temperature change on the detection process, so that the pressure establishment process under various weather conditions is kept highly consistent, the accuracy of leakage judgment is ensured, the misjudgment risk of micropore leakage is reduced, and by arranging a reference calibration end, when detection is started each time, a sensor closed-loop self-calibration process is executed, so that the detection accuracy is improved. Systematic deviation caused by standard misalignment is solved, and the overall misjudgment rate is reduced.

The invention provides a hollow pipe fitting forming device and method. The hollow pipe fitting forming device comprises a heating mechanism, a bulging quenching mold and an air source mechanism. The heating mechanism comprises a roller hearth furnace provided with a conveying roller way, a furnace body is sequentially provided with a feeding isolation chamber, a heating chamber and a discharging isolation chamber in the length direction, all the chambers are isolated from one another and communicated with a protective atmosphere system, and the chambers are used for introducing dry air or inert gas into the furnace body and maintaining the dew point temperature below-15 DEG C; hydrogen adsorption on the surface of the hollow pipe blank is effectively inhibited, and the hydrogen embrittlement risk is reduced. After a pipe blank is heated at a high temperature, austenitizing of a material structure is achieved, then the pipe blank is rapidly transferred to a bulging quenching die, gas expansion deformation occurs in a die cavity under the action of set air pressure, the hollow pipe fitting is formed by attaching the die wall, meanwhile, the hollow pipe fitting attached to the die cavity is synchronously cooled through a cooling assembly in the die, and quenching treatment is achieved. The material structure is converted into martensite, and the mechanical property of a formed part is improved.

The invention discloses a transformer with an anti-explosion protection structure, the transformer comprises a transformer body and an exhaust pipe with a pressure release valve, the exhaust pipe is arranged on the transformer body, the transformer body is provided with a gas breathing assembly, a cooling covering assembly and an oil liquid breathing assembly, and the invention relates to the technical field of oil-immersed transformers. According to the transformer with the anti-explosion protection structure, through arrangement of the oil liquid breathing assembly, an expansion space is provided for oil liquid, and through cooperation of arrangement of the elastic plugging piece, expansion of the oil liquid under different pressure gradients is achieved, the anti-explosion strength of the transformer body is improved, and through position changes of the U-shaped lap joint frame, the anti-explosion performance of the transformer body is improved. And meanwhile, four trigger switches are arranged, the blowing speed of the cooling fan is controlled when the interior of the transformer body is in different pressure environments, the energy-saving advantage is achieved, the cooling speed of the transformer body is increased, the gas expansion condition is relieved, and the explosion-proof strength is further improved.

The application discloses a kind of mixed nitrate class molten salt preparation device, it is related to molten salt preparation technical field, including jar body, the jar body is rotatably connected with rotating pipe, rotating pipe is fixedly connected with two fixed rods, further include: mixing mechanism.The application is expanded by the setting of scraping unit, inert gas in gas storage tank is expanded under the action of high temperature, gas expansion drives by rotating pipe into two installation cylinder, and drives two first sliding piston rod to move outward, first sliding piston rod moves and drives fixed frame to move, fixed frame moves and drives movable pipe and scraper to move, so that scraper is contacted with jar body inner wall, and the inner wall of jar body is scraped, movable pipe moves and drives rotating ring to rotate by connecting block, connecting rod and fixed block, rotating ring rotates and drives two baffle one to rotate, so that the area of two feed ports is increased, and then the feeding amount is increased, thereby adaptively increase the turnover amount, improve the uniform heating effect of material.

The utility model discloses a convenient connecting device for a gas meter and a gas pipeline, which belongs to the technical field of gas engineering and comprises a connecting pipe, the gas meter, the gas pipeline and a connecting sleeve, a fixing ring is fixedly connected to the center of the connecting pipe, and a group of first threaded holes distributed in an annular array are formed in each of the left end and the right end of the connecting pipe. A set of second threaded holes distributed in an annular array are formed in the connecting sleeve, matched positioning pins are jointly installed in the first threaded holes and the second threaded holes, an annular groove is formed in the connecting sleeve, an outer sealing ring is fixedly connected in the annular groove, and double sealing is achieved through a first elastic sealing ring and a second elastic sealing ring. The first elastic sealing ring conducts internal sealing on the connecting position through the elastic force of the compression spring, the second elastic sealing ring conducts external sealing through gas expansion of the annular elastic gas bag, the double-sealing design greatly improves the connecting sealing performance, and the gas leakage risk is effectively avoided; and safe and stable operation of the gas supply system is ensured.

The invention relates to the technical field of underground tools, in particular to a pressure control suction type underground PVT sampler and an underground PVT sampling method.The pressure control suction type underground PVT sampler comprises an upper connector, a control cylinder, a control head, a connector, an outer sleeve, a liquid storage cylinder, a throttling short section, a sampling cylinder, an inflow short section, a sealing short section and a lower connector, and the control cylinder is fixedly installed on the inner side of the lower end of the upper connector; the method comprises the following steps: (1) before an instrument enters a well, firstly testing the flow pressure of underground fluid, and debugging an initial pressure value in a pressure control section according to a flow pressure value of an underground sampling point; the device is reasonable and compact in structure and ingenious in conception, the sampling action of the sampler is controlled through the principle that water vapor expands after being heated, precise mechanical mechanisms such as electronic components and a clock are not arranged, the starting shear value is set according to the underground temperature, so that the starting action of the sampler is controlled, the higher the temperature is, the easier the sampling is, and due to the fact that under a certain volume, the sampling effect is good. The higher the temperature is, the larger the gas expansion is, the higher the pressure is, the larger the shearing force is, and the device has the characteristics of rapidness, stability and high efficiency.

The utility model discloses a waste discharge adhesive tape winding mechanism and a GDL cutting forming device. The waste discharge adhesive tape winding mechanism comprises a fixing frame, a winding assembly and a broken tape detection assembly. The winding assembly comprises an air swelling shaft, a winding torque motor and a plurality of winding units, the winding torque motor is hung below the fixing frame, one end of the air swelling shaft is connected with the winding torque motor, and the air swelling shaft is sleeved with the winding units; the winding unit comprises an assembly inner ring, an assembly outer ring, a friction plate and a plurality of adjusting screws, the assembly inner ring is sleeved and fixed on the air expansion shaft, the assembly outer ring is sleeved on the assembly inner ring, a ball bearing is arranged between the assembly outer ring and the assembly inner ring, the friction plate is sleeved on the air expansion shaft, and the adjusting screws are arranged on the air expansion shaft. The friction plate is arranged in the assembling inner ring and attached to one side of the assembling inner ring and one side of the assembling outer ring, and the adjusting screw penetrates through the friction plate and is embedded into the assembling inner ring. According to the utility model, the winding efficiency of the waste discharge adhesive tape is effectively improved.

The application discloses a kind of continuous self-bleeding self-suction pumps, it is related to self-suction pump technical field, including main body, the upper portion of the main body is provided with self-suction tank, the top of the main body is equipped with steam jacket heat tracing, the upper end of steam jacket heat tracing is equipped with injection device, the lower end of self-suction tank is provided with sealing device, the middle of sealing device is equipped with pipeline, the bottom of pipeline is equipped with fixing device, the right end of fixing device is provided with ground tank, the upper end of ground tank is equipped with nitrogen pressure exhaust pipeline device.The application is fixed on the upper end of steam jacket heat tracing by outer frame, then connects steam pipe line by the pipe joint of right end, exhausts gas in ground tank to expansion pipe, carries out gas expansion, exhausts the gas after completion of expansion to mixing chamber, makes it mixed jet pump, then is discharged by nozzle, without manual filling pump.Again by the pipeline cavity of through frame inner cavity through connecting pipeline.

The invention discloses a green pressure relief method for mine pressure display caused by multi-coal-seam mining remaining coal pillars, and belongs to the technical field of multi-coal-seam mining. According to the invention, through an intelligent decision-making system of multi-source data fusion, the problem of response lag of a traditional method is solved; a coupling technology of supercritical CO2 gas expansion pressure relief and a biodegradation hydraulic fracturing technology is adopted, low pollution and coal pillar structure protection in the pressure relief process are achieved, through a whole-process closed loop of'monitoring-prediction-decision-verification ', the problem of multi-coal-seam stress superposition control is solved, and the stability of the pressure relief process is improved. The method is especially suitable for a complex geological environment with mine pressure appearing caused by multi-coal-seam superposition mining.

The invention provides a high-pressure gas membrane rupture pressure measuring device and a measuring method thereof, and belongs to the technical field of pressure measurement. The measuring device comprises a pressure generation system, a gas compression system, a gas injection system, a pressure measuring system and a diaphragm clamping system. The piston divides the cavity into a hydraulic cavity and a gas compression cavity, and the piston is hydraulically driven to compress the pre-filled gas, so that the diaphragm is broken. The pressure measurement system records pressure-time data in real time, and a sliding window average algorithm is adopted to extract a membrane rupture pressure peak value. According to the technical scheme, inert gas is used, initiating explosive devices are not used, membrane rupture energy is only gas expansion, the protection box can absorb fragments, and explosion-proof transformation is not needed in a laboratory. And the smoothed unique membrane rupture pressure value is output through a sliding window averaging algorithm, and manual reading errors are eliminated. According to the technical scheme, the device is compact in structure, safe to operate, rapid in testing and suitable for accurately measuring the diaphragm rupture pressure of the gas gun diaphragm in a conventional laboratory.

A combined heat and power (CHP) system and a method of operating is provided. The CHP system includes an oxygen-air separation device. A combustion chamber has an inlet coupled to the oxygen-air separation device. The combustion chamber receives an expanded heated CO2 working gas for combustion of solid fuel and generates a CO2 exhaust gas. The expanded heated CO2 working gas comprising at least a portion of the CO2 exhaust gas. A heat exchanger receives combustion gases and outputs a cooled CO2 working gas. A turbine is provided having a compression section and an expansion section, the compression section configured to receive and compress the cooled CO2 working gas and to direct it to the heat exchanger. The turbine receives a heated CO2 working gas at the expansion section and expands the heated CO2 working gas. In an embodiment, CO2 products may be generated from the system.

The invention relates to a small-load pneumatic ejection separation test platform and a speed projection engineering estimation method. The test platform is composed of an air compressor, a high-pressure gas cylinder, an electromagnetic valve, a pressure gauge, a mounting rack, an ejection cylinder, a piston, a high-speed camera, a grid background plate, an irradiation lamp, a protection pad and other components. The air compressor is used for providing high-pressure gas required by the ejection system; the high-pressure gas cylinder is used for storing high-pressure gas required by system ejection; the electromagnetic valve is used for controlling the ejection device to start; the pressure gauge is used for measuring gas pressure in the gas cylinder; the ejection cylinder is used for providing a space required by high-pressure gas expansion and a track required by object ejection; the piston is used for converting aerodynamic force into thrust to provide acceleration for a separated object; the grid background plate is used for determining the position of the isolate shadow; and the irradiation lamp is used for irradiating the separated object and projecting a shadow on the square background plate. The device has the advantages of being safe in experiment, easy to install, convenient to recycle, convenient to maintain and capable of repeating the experiment.

The utility model discloses a kind of anti-permeation moisture-proof structures of building wall, comprising: wall, the outside of the wall is fixedly connected with adhesive layer, the outside of the adhesive layer is fixedly connected with moisture-proof layer, the outside of the moisture-proof layer is fixedly connected with waterproof finish layer;Drying assembly.The utility model, when daily use, moisture-proof layer can absorb the moisture of wall outside, ensure that wall outside always keeps dry state so that moisture is absorbed by moisture-proof layer, in sunny day, heat of illumination can be absorbed by heat-absorbing plate, finally heat is transferred to radiating wire by heat-conducting plate, finally radiating wire radiates heat to make moisture in moisture-proof layer evaporate dry, when moisture in moisture-proof layer evaporates and gasifies expansion, gas will flow out from air hole, gas expansion will pressurize plugging plate in process, synchronously make that slide pole and plugging plate extend outward, so that gas passes through air plate and discharges, further improve the effect of moisture-proof.

The present invention relates to the field of refrigeration, and in particular to a wheel cover assembly, an expander, and an air cycle machine. The wheel cover assembly comprises a housing, the housing being provided with an air inlet and an air outlet; a wheel cover, a gas flow channel surrounding the wheel cover being formed between the outer wall surface of the wheel cover and the inner wall surface of the housing, the gas flow channel being connected to both the air inlet and the air outlet, the air inlet being used to introduce gas; when gas is introduced through the air inlet, the gas flows along the gas flow channel, exchanges heat with the wheel cover, and is discharged through the air outlet; when the temperature of the gas filled in the gas flow channel is higher than the temperature of the impeller, the wheel cover can radiate the heat of the absorbed gas to the impeller to prevent the impeller of the expander from being frozen by the low-temperature gas after the gas expands and performs work.

A high-power and efficient gas expander provided by the present invention includes: a first rotor shaft and a second rotor shaft connected coaxially, and multiple stages of moving blades are provided on both the first rotor shaft and the second rotor shaft; a first expansion cylinder is sleeved on the first rotor shaft, and an air inlet / outlet communicating with the outside is provided on the first expansion cylinder, and the first rotor shaft rotates in the first expansion cylinder to output work; a second expansion cylinder is sleeved on the second rotor shaft, and an air inlet / outlet communicating with the outside is provided on the second expansion cylinder, and the second rotor shaft rotates in the second expansion cylinder to output work; multiple stages of nozzle rings are provided in both the first expansion cylinder and the second expansion cylinder, and the nozzle rings and the moving blades are arranged alternately. The double-cylinder and single-shaft system structure of the present invention realizes multi-stage expansion, achieves a greater power output, has a large power density and a low unit power cost; the high-power output enables the rotational speed of the shaft system to directly meet the requirements of the grid frequency, eliminating the need for a gearbox to change the output rotational speed, reducing mechanical energy loss, and having a high energy conversion efficiency.

A process for producing liquid methane with a reduced content of higher hydrocarbons, comprising the steps of: providing a stream of natural gas containing a mixture of ethane and higher hydrocarbons; cooling the mixture in a first heat exchanger passage; passing the cooled mixture to a gas expander; passing an outlet stream from the gas expander to a separator having a vapor outlet stream and a liquid outlet stream; compressing the vapor outlet stream; cooling the compressed vapor stream in a second heat exchanger passage to form a first liquefied methane product having a reduced content of higher hydrocarbons, wherein the liquid outlet stream from the separator forms a second liquefied methane product having an increased content of higher hydrocarbons.

The utility model relates to the technical field of chemical production process equipment, in particular to a solid-liquid-gas three-phase reaction backpressure discharging device which comprises a tubular reactor and a gas-liquid separation tank, a first connecting pipe is mounted at an outlet in the right side of the tubular reactor, and the outer wall of the first connecting pipe is communicated with a reaction buffer pipe; the right end of the first connecting pipe communicates with a rectangular pipe, front-stage valves are installed on the upper side and the lower side of the outer wall of the rectangular pipe correspondingly, and discharging buffer pipes located on the right sides of the two front-stage valves are installed on the upper side and the lower side of the outer wall of the rectangular pipe correspondingly. Due to the fact that the pressure in the discharging buffer pipe is higher than the external pressure, materials are discharged into the gas-liquid separation tank through the rear-stage valve, due to the fact that gas expansion is far larger than the size of the discharging buffer pipe, all the materials can be pushed out through gas expansion, and due to the fact that the front-stage valve and the rear-stage valve are in full-open and full-closed states when acting, the drift diameter of the front-stage valve and the rear-stage valve is far larger than the diameter of solid particles when the front-stage valve and the rear-stage valve are full-open. Therefore, the effect of avoiding the risk of solid blockage is achieved.

The utility model relates to the technical field of spraying, and particularly discloses a stainless steel groove type pipe fitting surface spraying device, which comprises an operating table, a cylinder arranged on the operating table, a gas expansion shaft coaxially fixed with an output shaft of the cylinder and used for fixing a pipe fitting, an air pump arranged on the operating table and connected with the gas expansion shaft, a spraying box arranged on the operating table above the cylinder and having an opening downward, and a spraying assembly arranged in the spraying box and used for spraying the pipe fitting, wherein the bottom of the spraying box is symmetrically provided with a collecting assembly used for collecting paint spraying residues, thereby solving the problem that the existing paint spraying device can accumulate paint spraying residues on the operating table, the paint spraying residues float in the air and release volatile organic compounds at the same time, the air in the working environment is polluted, and the health of the operator is damaged.

Process for producing liquid methane with a reduced content of higher hydrocarbons comprising providing a stream 1 of natural gas containing ethane and higher hydrocarbons cooling the resulting mixtur

The invention relates to the technical field of transformers, in particular to an adjustable transformer for an intelligent power grid, which comprises a transformer box body, a box cover, a reversing wheel set, a mounting frame, louver boards, a cooling tank, a liquid conveying pipe, a driving mechanism and the like, a box cover is arranged on the top of the transformer box body, a driving mechanism is arranged on one side of the transformer box body, the transformer box body is of an openable and closable shelter type structural design, a mounting frame is fixedly connected to the transformer box body in the length direction, a louver board is arranged on the mounting frame, and a turnover mechanism used for adjusting the louver board is arranged on the mounting frame. When the internal temperature rises due to long-time work, the automatic turnover of the louver board is realized by utilizing the principle that gas in the gas storage tank expands due to heat expansion and cold contraction and by pushing a sealing plate, a rack driving gear, a rotating rod driving a rotating shaft through a reversing wheel set and the like through gas expansion in the gas storage tank, so that the interior of the device is communicated with the external environment, and air flow is promoted; and manual intervention is not needed, so that the timeliness and the efficiency of heat dissipation are improved.

A carbon dioxide recovery system including: a compressor configured to compress a discharge gas; an absorption tower configured so that carbon dioxide contained in the discharge gas compressed by the compressor is absorbed into an absorbing solution; a regeneration tower configured so that carbon dioxide gas is separated from the absorbing solution discharged from the absorption tower; an expansion machine configured so that a nitrogen-containing gas contained in the discharge gas compressed by the compressor is caused to expand; and a liquefier configured so that the cold energy of the nitrogen-containing gas which has expanded in the expansion machine is utilized to liquefy the carbon dioxide gas separated from the absorbing solution in the regeneration tower.

In the patent application document I have described a coordination mechanism of two pistons within a cylinder that allows a thermodynamic process such as expansion to be carried out. The pistons are moved by separate mechanisms that transform the continuous rotation of motor or generator shafts into irregular rectilinear motion. The objective of this invention is its use in power production facilities where efficient compression or expansion of gas or vapors is required. The applications can be: Expansion of steam produced in a biomass boiler. Expansion of steam produced with some energy source, primarily renewable. Compression and expansion of air in an external biomass combustion plant and compressed air-exhaust gas heat exchanger. Vapor-gas expansion produced by the combustion of ethanol and oxygen.

The utility model discloses an inflatable shaft structure, which relates to the technical field of inflatable shafts and comprises an inflatable shaft, the inflatable shaft comprises an air inlet shaft provided with a through hole and an inflatable shaft body connected with the air inlet shaft, and a sliding plug capable of moving along the length direction of the inflatable shaft is arranged in the inflatable shaft body. The surface of the sliding plug comprises a plurality of conical bodies which are connected with one another, a plurality of conical planes are distributed on the surface of each conical body, the conical planes of the sliding plug abut against a plurality of expansion strips, and a plurality of inclined planes matched with the conical planes are arranged on the expansion strips. The expansion strip is a whole block and is composed of a plurality of inclined plane sections, the conical plane is machined on the sliding plug to be matched with the expansion strip in a sliding mode, the expansion strip directly moves on the conical plane of the sliding plug, only the planes of the two pieces make contact with each other, restraining force and resistance in other directions do not exist, and the expansion strip is smoother in the working process; in a working environment including material dust, the expansion strip and the sliding plug of the structure cannot be blocked.