89 results about "Air cycle machine" patented technology

The invention belongs to the technical field of electrical equipment, and discloses a dust-removing and moisture-proof treatment device for an automatic element of an electrical instrument. The electrical instrument automation element dust removal and moisture prevention treatment device comprises a cabinet body, a cabinet door is arranged at an opening of the cabinet body, a partition plate is fixedly connected in the cabinet body, an inner cabinet is arranged in the cabinet body and located on the upper side of the partition plate, and an inner cabinet door is arranged at an opening of the inner cabinet. According to the dust-removing and moisture-proof treatment device for the automatic element of the electrical instrument, by means of the design of the air circulation mechanism and the air compression mechanism, dust removal and dehumidification treatment can be conducted on external air, the treated air is compressed and stored, and the air circulation mechanism extracts air from a compressed air bottle to conduct circulating heat dissipation on the electrical instrument in the inner cabinet; the direct contact between external air and the electrical instrument is effectively avoided, the adverse effect of dust and water vapor on the electrical instrument is avoided, and the problems proposed in the background technology are solved.

The invention discloses a turbine assembly surface defect detection method and system for an air cycle machine, and the method comprises the steps: constructing a detection basis through image preprocessing and edge extraction, correcting and enhancing a defect feature contrast ratio in combination with a gray value and a gradient amplitude, achieving the refined region division through a region growing algorithm, and obtaining a surface defect detection result. According to the method, the defect judgment standard is quantified through the scoring coefficient, the detection result is optimized through overlapping region screening, the accuracy and reliability of defect detection are effectively improved, tiny defects can be accurately recognized, misjudgment is avoided, meanwhile, the detection efficiency is remarkably improved through the automatic processing flow, and efficient and intelligent technical support is provided for quality control of the turbine assembly.

A system that provides a cooling liquid to a component of an aircraft, the system having: a cooling circuit that includes a fuel cell that receives a first flow and transfers first waste heat to the first flow; an air cycle machine (ACM) that transfers second waste heat to a second flow; a first heat exchanger, fluidly coupled to the cooling circuit downstream of the fuel cell, that thermally couples the first and second flows to superheat the first flow; a turbine, fluidly coupled to the cooling circuit downstream of the first heat exchanger, that extracts energy from the first flow; and a condenser, fluidly coupled to the cooling circuit downstream of the turbine, that condenses the first flow into the cooling liquid, wherein the component is fluidly coupled to the circuit downstream of the condenser.

Aircraft air cycle machines include a first stage turbine, a second stage turbine that receives air from the first stage turbine, and a duct arranged between the first stage turbine and the second stage turbine. A circular finned coalescer is arranged within the duct and includes a central body, a first fin layer wrapped about the central body, a first parting sheet wrapped about the first fin layer, and a second fin layer wrapped about the first parting sheet. Each of the fin layers include a plurality of fin elements and channels are defined between circumferentially adjacent fin elements of each of the first and second fin layers. The channels are tortuous channels such that moisture carried on a flow through the channels will impinge upon surfaces of the fin elements and coalesce into water droplets.

The present invention provides an air cycle machine, comprising an air expansion mechanism, the air expansion mechanism including an expansion volute and a turbine within the expansion volute, a turbine having a wheel cover mounted on its outer periphery, the wheel cover including a connecting cover plate and an air outlet pipe located on the outer end surface of the connecting cover plate, the wheel cover being connected to the expansion volute via the connecting cover plate, and the air cycle machine further including an anti-icing pipe mounted radially outwardly of the air outlet pipe, the anti-icing pipe having a hot air flow introduction pipe, the radial projection of the turbine outlet end surface on the air outlet pipe forming a first projection circle, and the hot air flow delivered linearly by the hot air flow introduction pipe covering at least a portion of the first projection circle. The present invention can specifically direct a higher-temperature airflow in a linear impact manner to the lowest-temperature region of the air outlet pipe, thereby effectively raising the air outlet pipe temperature in this region, thereby effectively reducing the probability of ice formation in this region, and effectively preventing ice blockage at the air outlet of the turbine of the air expansion mechanism.

The invention provides an air cycle machine which comprises a transmission shaft, an annular sealing piece and an impeller, the impeller is installed at one end of the transmission shaft, an annular protrusion is formed on the outer circumferential wall of the transmission shaft and is close to the impeller, an annular groove is formed in the inner circumferential wall of the annular sealing piece, and the annular sealing piece is arranged on the periphery of the transmission shaft in a sleeving mode. And the annular bulge is inserted into the annular groove. According to the invention, the annular bulge designed on the outer circumferential wall of the transmission shaft is inserted into the annular groove formed in the inner circumferential wall of the annular sealing element, so that the annular bulge and the annular groove are closely matched, and the sealing performance between the annular sealing element and the transmission shaft is better; strong flowing obstruction is generated on airflow flowing along the outer surface of the transmission shaft, so that the leakage amount of high-pressure air from the impeller can be reduced, and finally the leakage amount of the air circulation machine is reduced.

The invention discloses a passenger car processing, spraying and drying device which comprises one or more partition plates arranged in a baking finish house in the vertical direction, the partition plates are connected with the baking finish house in a sliding and sealing mode, heating mechanisms are arranged on the side walls of the partition plates, and one or more air circulation mechanisms are sequentially arranged at the top of the baking finish house. The air circulation mechanism is provided with a temperature detection element and a humidity detection element, the temperature detection element is electrically connected with the heating mechanism through a controller, and the air circulation mechanism can achieve air circulation in the baking finish house and pump out moisture in the baking finish house. The baking finish house is divided into different compartments through the partition plates, the temperature and humidity of each compartment can be independently controlled, the size of each compartment can be independently set according to requirements by sliding the partition plates, all parts of a passenger car are independently dried in a classified mode, and therefore the drying quality and efficiency of all the parts of the passenger car after spraying are improved, and the drying efficiency is improved. Therefore, the processing quality of the passenger car is improved.

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.

The application belongs to the field of aviation environmental control system design, and particularly relates to a bidirectional-ejection-based aircraft heat exchange system. The system comprises a ram air inlet channel, a heat exchanger and an air circulator. The ram air inlet channel comprises a ram air inlet section (1), a transition ejection section (4) and a ram air outlet section. The heat exchanger comprises an air-liquid heat exchanger (2), a first air-air heat exchanger and a second air-air heat exchanger. The air circulator comprises a first air circulator and a second air circulator. The bidirectional-ejection-based aircraft heat exchange system utilizes the principle of constant entropy ejection to limit the ram air flow entering the left and right ram air outlet channels, and integrates the cold side of the heat exchanger with the ram air inlet channel, and matches the dynamic pressure brought by the ram air with the flow resistance of the heat exchanger group, thereby effectively avoiding problems such as fan overspeed, windmill effect and surge of the air circulator.

Provided is a cooling device using the vaporization heat of water, the cooling device capable of eliminating the need for a continuous supply of a large amount of water from the outside and reducing an environmental load. A cooling device 1 which cools a cooling target object 3 using vaporization heat of water includes: an air circulation mechanism 10 including an air circulation path 11 including a target object cooling section 11a for cooling the cooling target object 3 with the air mixed with the atomized water and an air cooling section 11b for cooling the heated air; and a water circulation mechanism 20 including a discharge portion 21 for discharging the water in the target object cooling section 11b, a tank 22 for collecting water condensed in the air cooling section 10b, and a pump 22 for delivering the water in the tank 22 to the discharge portion 21.

The present invention relates to the technical field of industrial air conditioning equipment, specifically, an industrial air conditioning cooling machine, including an air circulation mechanism, the air circulation mechanism including an inner unit and an outer unit, an air inlet is provided on the side of the outer unit, a filter mechanism is provided on one side of the air inlet, the filter mechanism is provided on the inner wall of the outer unit, the filter mechanism includes a filter chamber, the filter chamber is fixedly connected to the inner wall of the outer unit on the side where the air inlet is provided, a baffle is fixedly connected to the filter chamber, a guide hole for air to pass through and to isolate dust is provided on the baffle, a cleaning mechanism for cleaning dust is provided on the side of the baffle close to the air inlet, a cooling mechanism for reducing air temperature is provided on the side of the baffle away from the air inlet, and a dredging mechanism for dredging the cooling mechanism is provided below the cooling mechanism. When the abutment column extends out of the guide hole to push out dust, the abutment column will be inserted into the sponge to form a package, thereby removing dust on the abutment column, increasing the air throughput, and thus improving the cooling effect.

The present invention discloses a method and system for detecting surface defects of turbine components of an air cycle machine, comprising: building a detection basis through image preprocessing and edge extraction, enhancing defect feature contrast in combination with grayscale value and gradient amplitude correction, realizing refined regional division using a region growing algorithm, quantifying defect judgment criteria with a scoring coefficient, and optimizing detection results through overlapping region screening, thereby effectively improving the accuracy and reliability of defect detection, being able to accurately identify minor defects and avoid misjudgment, and at the same time, the automated processing flow significantly improving detection efficiency, providing efficient and intelligent technical support for turbine component quality control.

An integrated motor / generator system including a main shaft supporting an ACM compressor and an ACM turbine; an ACM first heat exchanger fluidly coupled between the ACM compressor and the ACM turbine; an ACM second heat exchanger fluidly coupled between the ACM turbine and the ACM compressor; an ACM working fluid fluidly coupled with the ACM compressor, the ACM first heat exchanger, the ACM turbine and the ACM second heat exchanger; an APU turbine in operative communication with the main shaft; an electrical power source in operative communication with the integrated motor / generator; and the integrated motor / generator in operative communication with the main shaft, wherein the integrated motor / generator is configured to at least one of produce mechanical rotary shaft energy into the main shaft, responsive to a predetermined gas turbine engine condition and generate electrical power responsive to another predetermined gas turbine engine condition.

An air cycle machine includes a compressor in fluid communication with an output conduit, a first turbine operably connected to the compressor and fluidly coupling the compressor with the output conduit, a second turbine operably connected to the compressor and fluidly coupling the compressor with the output conduit, and a valve. The valve couples the compressor with the output conduit and has an open position and a closed position. In the open position the first turbine and the second turbine are fluidly connected in parallel between the compressor and the output conduit. In the closed position the first turbine is fluidly connected in series with the second turbine between the compressor and the output conduit. Air cycle machine systems and methods of controlling flow in air cycle machines are also described.

An air cycle system for a gas turbine engine includes a heat exchanger having an air cycle inlet. An air cycle machine includes an air cycle machine outlet and an annular flexible interface coupling connecting the air cycle inlet to the outlet. The flexible interface coupling includes a receiving portion having a flared region across which a diameter of a heat exchanger portion increases and a landing portion across which the diameter of the heat exchanger portion is maintained. An air cycle machine portion is received in the receiving portion and includes an outlet flange and a diffuser radially inward of the outlet flange. The outlet flange includes a radially outward facing surface contacting a radially inward facing surface of the landing portion. The diffuser is configured to move axially and radially relative to the outlet flange.

The invention provides a cold storage hot ammonia defrosting safety protection device, belongs to the technical field of cold storage safety, and solves the technical problems that existing hot ammonia defrosting is high in manual labor intensity, high in safety risk and the like. Comprising an evaporation mechanism, a gradient adjusting mechanism, multi-stage pipelines, an external water pump, an external liquid discharging tank and a pressure balance mechanism, the evaporation mechanism is connected with the external liquid discharging tank and the external water pump through pipelines, the evaporation mechanism is connected with the pressure balance mechanism through a pipeline, and the multi-stage pipelines are arranged on the two sides of the gradient adjusting mechanism. Wherein a plurality of first electric butterfly valves are arranged on the multi-stage pipeline on one side, the multi-stage pipeline on the other side is connected with an air inlet of the evaporation mechanism through a pipeline, and the air circulation mechanism is connected with the gradient adjusting mechanism through a pipeline. Safety, stability, high efficiency and good safety of hot ammonia defrosting of the cold storage can be guaranteed through inflation preheating, stepped preheating, efficient defrosting, pressure buffering and balancing, defrosting water discharging, leakage monitoring and air suction filtering.

Disclosed herein is a method for failure prediction in an Air Cycle Machine (ACM). The method includes calculating a change in energy of an ACM airflow passing from an inlet of the ACM compressor to an outlet of the ACM compressor. The method may also include calculating a kinetic energy of the ACM compressor based on calculating the work of the ACM compressor on the ACM airflow as the ACM airflow passes through the ACM compressor, calculating the work of the ACM compressor based on the inlet temperature of the ACM airflow at the inlet of the ACM compressor, compressor pressure ratio of the ACM compressor, and a fluid property of the ACM airflow at the inlet of the ACM compressor. Additionally, the method can include calculating an ACM compressor efficiency as a ratio of the change in energy of the ACM airflow across the ACM compressor to the kinetic energy of the compressor. The method may further include predicting a failure state of the ACM compressor.

A single shaft, one piece rotor having: a hub that extends from a hub aft end to a hub forward end, wherein the hub aft end defines a first diameter and the hub forward end defines a second diameter that is smaller than the first diameter; a plurality of blade stages extending from a forward end to an aft end, wherein the blade stages are stacked, one on top of the other, radially outwardly from the hub, including an inner stage that is integral with the hub and an outer stage that is radially spaced apart from the hub; and a shroud between adjacent ones of the blade stages.

The present application provides a turbine rotor, an expander and an air cycle machine. The turbine rotor includes a disk (1) and blades arranged circumferentially along the disk (1). The flow attack angle at the leading edge of the blade is 0°. Wherein, the inlet flow angle α of the turbine rotor is the included angle between the flow direction FD and the axial direction of the turbine rotor, and the leading edge blade angle β of the turbine rotor is the included angle between the tangent line of the leading edge of the mean camber line of the blade profile and the axial direction of the turbine rotor. The flow attack angle i = α - β. According to the turbine rotor of the present application, the problem of large separated flow generated by the impact of the flow on the leading edge of the rotor can be solved, thereby reducing the flow loss of the flow and improving the efficiency of the turbine rotor.

An air cycle machine includes a turbine section, a compressor section, an axial flux magnetic gear system electromechanically coupling the turbine section to the compressor section, and a stabilization system for at least one shaft of the air cycle machine. The axial flux magnetic gear system includes a stator, two rotors, a winding system, and a control module. Each rotor interacts with the stator such that the rotor rotates when the axial flux magnetic gear system is exposed to an electrical current. The winding system stabilizes the position of the rotors along their rotational axes. The control module is configured to supply the electrical current to at least one of the winding system, the stator, and the rotors to drive rotation of the rotors. The stabilization system stabilizes the position of the at least one shaft of the air cycle machine along the shaft's rotational axis.

An air cycle system for a gas turbine engine includes a heat exchanger having an air cycle inlet. An air cycle machine includes an air cycle machine outlet and an annular flexible interface coupling connecting the air cycle inlet to the outlet. The flexible interface coupling includes a receiving portion having a flared region across which a diameter of a heat exchanger portion increases and a landing portion across which the diameter of the heat exchanger portion is maintained. An air cycle machine portion is received in the receiving portion and includes an outlet flange and a diffuser radially inward of the outlet flange. The outlet flange includes a radially outward facing surface contacting a radially inward facing surface of the landing portion. The diffuser is configured to move axially and radially relative to the outlet flange.

An environmental control system (ECS) of an aircraft, having a case; a vaper compression system (VCS) having a compressor and a driven shaft coupled to the compressor, wherein the compressor and the driven shaft are sealed within the case; and a four-wheel air cycle machine (ACM) including a first turbine and a drive shaft coupled to the first turbine and which are outside the case, a second turbine connected to the first turbine via a second shaft, a second compressor connected to the second turbine via a third shaft, and a fan connected to the second compressor via a fourth shaft, wherein the drive shaft and the driven shaft are coupled to each other via a coupling.

An ACM having a motor with front and aft ends; a compressor coupled to the front end; a turbine coupled to the aft end; a shell having a shell front part that surrounds the compressor and defines a shell inlet, a shell aft part that surrounds the turbine and defines a shell outlet, and a shell middle part that surrounds the motor; an outer flow passage is defined within the shell, surrounding the compressor, the motor and the turbine; a shaft extends between the compressor and turbine to define a shaft front end coupled to the compressor, and a shaft aft end coupled to the turbine, and the motor includes a rotor that is mounted to the shaft.

The application provides a turbine transmission shaft and an air circulating machine, the turbine transmission shaft comprises a first shaft section, a second shaft section and a thrust section, the first shaft section, the thrust section and the second shaft section are sequentially arranged, the first shaft section, the thrust section and the second shaft section are integrally formed and can conduct heat between each other; the axial side surface of the thrust section towards the first shaft section is a first thrust disc surface, the axial side surface of the thrust section towards the second shaft section is a second thrust disc surface, the radial outer periphery of the thrust section can introduce cooling gas and can divide the cooling gas into at least two streams, one of which can pass through the first thrust disc surface and reach the outer peripheral wall of the first shaft section, and the other of which can pass through the second thrust disc surface and reach the outer peripheral wall of the second shaft section. According to the application, flow distribution is not needed for the cooling of the first shaft section and the second shaft section, and the problem of flow distribution involved in the cooling of the aerodynamic bearing at different positions of the existing air circulating machine is solved.

The utility model relates to plasma cleaning, and discloses an air circulation device of a plasma cleaning machine, which comprises an air circulation mechanism, the air circulation mechanism comprises an arc-shaped suction cover, an air circulation cover is sequentially arranged on the surface of the side wall of the arc-shaped suction cover, and a control box is arranged in the middle of the top end of the air circulation cover. An air suction sleeve is arranged in the middle of the top end of the control box, a base is arranged in the middle of the top end of the air suction sleeve, when the arc-shaped suction cover operates in the inner space of the plasma cleaning machine, the opened air suction sleeve and a sleeve of the air suction sleeve are arranged in a unified mode, and the base is used for being connected with a pipe body of an L-shaped guide pipe. Corresponding upper top plate structures are connected with one another according to the plate face structures of the corresponding side wall baffles, and circulation of gas in the vacuum box is achieved.

An air cycle machine (ACM), having a heat exchanger having a front end and an aft end; a compressor at the front end of the heat exchanger; a turbine at the aft end of the heat exchanger; a shell having a shell front part that surrounds the compressor and defines a shell inlet, a shell aft part that surrounds the turbine and defines a shell outlet, and a shell middle part that surrounds the heat exchanger, wherein a flow passage is defined within the shell and around the compressor, through the heat exchanger, and around the turbine; and a shaft extending between the compressor and the turbine that couples the compressor and the turbine.

A single-shaft unitary centrifugal rotor for an air cycle machine (ACM), having: a body extending from a body forward end to a body aft end; a flange intermediate the body forward and aft ends; a first rotor extending forward from the flange by a first axial length to a first rotor end at or near the body forward end, the first rotor defining a first hub and a first blade stage extending outwardly from the first hub; a second rotor extending aft from the flange by a second axial length to a second rotor end at or near the body aft end, and defining a second hub and a second blade stage extending outwardly from the second hub; a passage defined through the unitary rotor, between the body forward and aft ends, that receives a drive shaft.

The utility model provides a turbine shell assembly and an air circulation machine, the turbine shell assembly comprises a turbine shell body and an air outlet pipe formed on the turbine shell body, the turbine shell assembly further comprises an ultrasonic wave deicing device, the ultrasonic wave deicing device comprises an ultrasonic wave generator, and the ultrasonic wave generator is arranged on the turbine shell body. And the ultrasonic generator is arranged on the pipe wall of the air outlet pipe. Compared with a manual deicing mode in the prior art, the ultrasonic generator is used for deicing under the cavitation effect, the deicing efficiency is higher, and the inner wall face of the air outlet pipe cannot be damaged; compared with the mode of melting ice by introducing high-temperature airflow in the prior art, according to the technical scheme, the temperature of the air outlet airflow in the air outlet pipe cannot be affected in the deicing process, fluctuation of the air outlet temperature is prevented, and the refrigerating capacity of the system is not lost.

An environmental control system (ECS) of an aircraft, having: a case; a vaper compression system (VCS) having a compressor and a driven shaft coupled to the compressor, wherein the compressor and the driven shaft are sealed within the case; and an air cycle machine (ACM) including a first turbine and a drive shaft coupled to the first turbine and which are outside the case, wherein the drive shaft and the driven shaft are coupled to each other via a coupling.