71 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 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.

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.

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.

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.

The application provides a processing and manufacturing method of an air circulating machine shell and the air circulating machine. The processing and manufacturing method comprises the following steps: fixing and connecting a turbine shell and a compressor shell according to the position in the use state to be integrated, so that the first radial air bearing stator hole section on the turbine shell and the second radial air bearing stator hole section on the compressor shell are oppositely arranged; the boring cutter is penetrated from the first radial air bearing stator hole section to the second radial air bearing stator hole section along the axial direction of the first radial air bearing stator hole section, and the boring cutter is controlled to rotate to bore the first radial air bearing stator hole section and the second radial air bearing stator hole section to the design size at one time. The coaxiality of the radial air suspension bearings at the two ends of the rotating shaft in the rotor system is greatly improved, so that the eccentricity of the rotating shaft is reduced, the abnormal vibration and instability of the rotor are effectively prevented, and the occurrence probability of the bearing abrasion or damage of the air suspension bearing caused by the vibration and instability of the rotating shaft is reduced.

The present invention relates to an energy-saving vertical air circulating machine with a double-axle motor and double fans, which comprises: a housing, an indoor air supply part provided on the upper part of the front face, an indoor air exhaust port provided on each lower part of the two side faces, a first outdoor air supply port, a second outdoor air supply port and an outdoor air exhaust port provided on the upper part of the rear face; a first heat exchange device and a second heat exchange device, which are respectively located on the lower part of the indoor side of the housing, and respectively realize the heat exchange of indoor air and outdoor air; an air supply double fan assembly for generating air flow to supply external air to the indoor through the indoor air supply part; an exhaust fan assembly for generating air flow to exhaust indoor air to the outdoor through the outdoor air exhaust port; a first rear side air supply pipe provided on the rear face of the indoor side of the housing to guide the external air supplied to the first outdoor air supply port to flow into the first heat exchange device; a second rear side air supply pipe; and a flow path forming exhaust pipe.

The utility model discloses an automatic power-off protection device for an expansion machine of a deep cooling air separation plant, which comprises a rectangular cold box, an air circulation mechanism is arranged in the rectangular cold box and is connected with an electric power transmission line, a power-off detection box is arranged on the electric power transmission line, a controller is arranged on the power-off detection box, and the controller is connected with the rectangular cold box. The controller is connected with a buzzer, an alarm lamp and a pneumatic ball valve, the buzzer, the alarm lamp and the pneumatic ball valve are connected with a first storage battery arranged in the mounting box, the buzzer and the alarm lamp are fixedly mounted on the outer side of a positioning plate, and a connecting block is arranged on the other side of the positioning plate. According to the automatic power-off protection device for the expansion machine of the deep cooling air separation plant, the problem that an existing automatic power-off protection device for the expansion machine of the deep cooling air separation plant cannot give an alarm to workers when the power-off condition occurs is solved, and an air circulation mechanism is arranged in a rectangular cold box.

The utility model relates to the technical field of calendaring machines, and discloses a calendaring machine for producing a high-flatness floor wear-resistant layer, which comprises a calendaring roller, a rack and a power device, a heating cavity and a heater are arranged in the calendaring roller, and the calendaring roller can heat the floor wear-resistant layer, has flowability, improves flatness and physical properties, and avoids deformation and warping. A hollow shaft is further fixed in the calendering roller and communicated with the heating cavity, and an air circulation mechanism is arranged on the outer side of the machine frame and can extract high-temperature air in the heating cavity and convey the high-temperature air into the machine frame to preheat a floor abrasion-resistant layer. And the heater comprises a plurality of heating rods which are uniformly distributed on the side wall of the calendering roller. One end of the calender roller is provided with a conductive slip ring which can ensure stable work of the heating rod. The air circulation mechanism comprises an air pump, a first multi-way pipe, a second multi-way pipe and a rotary valve and can drive hot air to circulate, so that the interior of the rack is kept at a stable preheating temperature. An air outlet plate is arranged on the inner side of the feeding hole, so that the temperature loss can be further reduced.

The invention relates to the technical field of industrial tunnel furnace waste heat recovery equipment, in particular to a basin-type insulator tunnel furnace demolding waste heat recovery device which comprises a tunnel furnace demolding waste heat recovery device body, a conveying mechanism, an air circulation mechanism, a terminal controller, a sealing pneumatic door, a heating tray and a connecting table. The tunnel furnace demolding waste heat recovery device body and the outlet end of the tunnel furnace are connected with a connecting table, and a conveying mechanism is arranged in the tunnel furnace demolding waste heat recovery device body. The port of the tunnel furnace is externally connected with the double-layer gradient heat preservation cavity and the automatic conveying system, the heat preservation uniformity problem is effectively solved, the heat preservation section is of an upper-lower-layer independent temperature control structure, accurate temperature control is achieved, and the heat preservation efficiency is improved. The micropore air supply design of the gap between the top air duct and the bottom roll shaft ensures that the convex surface and the concave surface of the die receive uniform hot air flow at the same time, and the local stress concentration phenomenon is effectively reduced.

Aircraft air cycle machines include a first stage turbine, a second stage turbine, and a duct arranged between the first stage turbine and the second stage turbine. A plate-fin coalescer is arranged along the duct. The plate-fin coalescer includes a housing, a first fin layer arranged within the housing, a second fin layer arranged within the housing, and a first parting sheet arranged between the first fin layer and the second fin layer. Each of the first fin layer and the second fin layer include a plurality of fin elements arranged in substantially parallel orientation relative an axis through the housing, and channels are defined between adjacent fin elements of the plurality of fin elements of each of the first fin layer and the second fin layer. Moisture carried on a flow through the channels will impinge upon surfaces of the fin elements and coalesce into water droplets for removal.

The utility model discloses a general assembly positioning device for an aircraft air circulation refrigeration assembly. Comprising a supporting frame (70), a positioning flat plate (701) is arranged on the supporting frame (70), and a pair of two-stage radiator fixing supporting columns (10) used for positioning a two-stage radiator in the aircraft air circulation refrigeration assembly, a radiator supporting seat (20) used for supporting the two-stage radiator and a supporting base (30) used for supporting an air circulation machine in the aircraft air circulation refrigeration assembly are installed on the positioning flat plate (701). The air circulation machine fixing supporting column (40) is used for positioning an air circulation machine, and the condenser fixing supporting column (50) and the heat regenerator fixing supporting column (60) are used for positioning and supporting a heat regeneration condenser assembly in the aircraft air circulation refrigeration assembly. According to the utility model, the final assembly positioning of the refrigeration assembly is realized while the final assembly tool efficiency of the refrigeration assembly is improved, and the requirement of the refrigeration assembly on the final assembly size precision is met.