92 results about "Turboexpander" patented technology

A system for processing a natural gas stream includes a flow-through turboexpander generator, a throttle valve, a knockout separator, and an absorption separator. The flow-through turboexpander generator is configured to receive a first portion of the natural gas stream and generate electrical power in response to expansion of the first portion of the natural gas stream. The throttle valve is configured to reduce a pressure of a second portion of the natural gas stream. The knockout separator is configured to receive the first portion of the natural gas stream from the flow-through turboexpander generator and configured to separate phases of the first portion of the natural gas stream to produce at least a gaseous phase and an aqueous phase. The absorption separator is configured to receive the gaseous phase from the separator vessel and separate water from the gaseous phase to produce a dehydrated natural gas stream.

An air conditioning system includes a rotation driving device, an energy storage device for powering the rotation driving device, a generator electrically connected to the energy storage device, and a turboexpander. The turboexpander includes a drive shaft coupled to both the generator and the rotation driving device, and configured to be rotated by the rotation driving device. The turboexpander also includes a compressor wheel and an expander wheel. The compressor wheel is configured to pull in ambient air and generate pressurized air from the ambient air responsive to rotation of the drive shaft. The expander wheel is fluidly coupled to the compressor wheel such that the pressurized air from the compressor wheel is configured to be received in the expander wheel and converted into expanded and cooled air by the expander wheel for delivery to an environment.

An energy storage system includes a pneumatic vessel, a cable system attached to the vessel, a compressor for pressurizing the vessel, a generator attached to the cable system, a turboexpander generator for receiving compressed air from the vessel, and a control system. The system deflates and allows the vessel to sink in a body of water, inflates the vessel to store energy when an abundance of it exists, and allows the inflated vessel to resurface to release its buoyant energy to the generator via the cable system and to release compressed air to the turboexpander generator to generate electricity when electricity demand is high and / or electricity generation from other sources is low.

A cold energy recovery facility includes a liquid hydrogen tank configured to store liquid hydrogen a first circuit configured to circulate a first working medium, a second circuit configured to circulate a second working medium having a freezing point higher than the first working medium, a first turboexpander provided in the first circuit, the first turboexpander being configured to be driven by the first working medium in a gas state, a second turboexpander provided in the second circuit, the second turboexpander being configured to be driven by the second working medium in a gas state, a first heat exchanger configured to vaporize the liquid hydrogen from the liquid hydrogen tank by heat exchange with the first working medium, a second heat exchanger configured to vaporize the first working medium in a liquid state by heat exchange with the second working medium, and a third heat exchanger configured to vaporize the second working medium in a liquid state by heat exchange with a heat medium, wherein the first circuit and the first turboexpander form a part of a first thermodynamic cycle that uses the liquid hydrogen as a low-temperature heat source in the first heat exchanger, and the second circuit and the second turboexpander form a part of a second thermodynamic cycle that uses the first working medium as a low-temperature heat source in the second heat exchanger.

The invention belongs to the technical field of liquid hydrogen storage, and particularly discloses a liquid hydrogen boil-off gas constant-pressure recovery method and equipment, and the equipment comprises a liquid hydrogen storage box, a first compressor, a first-stage liquid nitrogen heat exchanger, a second-stage liquid nitrogen heat exchanger, a third-stage liquid nitrogen heat exchanger, a second compressor, a turbo expander and a cooler which are sequentially connected end to end; a liquid hydrogen evaporation outlet and a liquid hydrogen inlet are formed in the liquid hydrogen storage box, and the liquid hydrogen evaporation outlet is connected with an inlet of the first compressor; a throttle valve is arranged between the liquid hydrogen inlet and the outlet of the cooler; liquid hydrogen evaporated gas enters a first compressor to be compressed and then enters a first-stage liquid nitrogen heat exchanger, a second-stage liquid nitrogen heat exchanger and a third-stage liquid nitrogen heat exchanger to be pre-cooled step by step in sequence; the precooled hydrogen enters the second compressor, the turbo expander and the cooler to be cooled step by step and then enters the throttling valve, and the throttling valve enables the cooled hydrogen to be liquefied through the expansion effect. The pressure of the recovery equipment can be kept stable under different working conditions, and gas waste is avoided.

An energy storage system includes a pneumatic vessel, a cable system attached to the vessel, a compressor for pressurizing the vessel, a generator attached to the cable system, a turboexpander generator for receiving compressed air from the vessel, and a control system. The system deflates and allows the vessel to sink in a body of water, inflates the vessel to store energy when an abundance of it exists, and allows the inflated vessel to resurface to release its buoyant energy to the generator via the cable system and to release compressed air to the turboexpander generator to generate electricity when electricity demand is high and / or electricity generation from other sources is low.

The invention relates to the technical field of impeller machinery, in particular to a turbo expander noise reduction supporting plate structure which comprises a supporting plate body, a tooth-shaped tail edge and sound absorption holes, the tooth-shaped tail edge is arranged on one side of the supporting plate body, the two ends of the supporting plate body are connected with the inner wall of an exhaust pipe and a flow guide cone respectively, and the supporting plate body is arranged close to an air inlet. The tooth-shaped tail edge is arranged close to the exhaust port; sound absorption holes are formed in the side face of the supporting plate body. Noise generated by an upstream turbine blade grid is absorbed through the sound absorption holes, an efficient through-flow structure is formed through the tooth-shaped tail edge, poor flow structures such as flow separation, falling vortex and wake loss are changed, and the aerodynamic noise of the turbine blade grid is restrained.

An aircraft propulsion system includes a cryogenic fuel system and a fuel flow path where a fuel flow is circulated from upstream in a direction downstream to a combustor of the core engine. A first heat exchanger inputs heat into the fuel flow downstream of the first heat exchanger is used to heat the fuel flow from the fuel storage tank and a second heat exchanger inputs thermal energy from a heat source into the fuel flow from the core engine downstream of the first heat exchanger. A turboexpander is configured to generate shaft power from expansion of the fuel flow exhausted downstream from at least one of the first heat exchanger and the second heat exchanger.

The invention relates to the technical field of low-temperature turbo-expanders, in particular to a low-temperature turbo-expander main machine and a complete machine system, and the low-temperature turbo-expander main machine is designed around a main shaft. The main shaft sequentially penetrates through and integrates the impeller assembly, the braking assembly, the lubricating assembly and the sealing assembly which are located at the two ends, and the braking assembly is matched with an external braking sleeve through bidirectional braking oil grooves formed in a braking section of the main shaft and opposite in rotating direction to form a hydraulic braking system. The lubricating assembly comprises a thrust bearing structure comprising a plurality of tilting pads and thrust tiles, and an oil retainer is integrated to form a closed lubricating cavity. According to the sealing assembly, a multi-stage sealing structure at least comprising two sealing sections is adopted at the two ends of the main shaft, and sealing gas is introduced into a sealing groove to effectively block leakage of an internal working medium. A nozzle part in the impeller assembly synchronously drives a plurality of rotatable blades through a linkage ring, and the end gaps of the blades are dynamically controlled through a pressing ring mechanism capable of axially moving.

The application discloses an axial force balancing mechanism and a turbo expander. The axial force balancing mechanism is used for balancing the axial force of a turbo expander. The axial force balancing mechanism comprises a casing, a main shaft rotatably connected with the casing, the main shaft having an expansion end and a pressurization end, the expansion end being provided with a working wheel, and the pressurization end being provided with a pressurization wheel; a shaft sleeve fixed to the main shaft, the inner shaft sleeve being provided with a shaft sleeve sawtooth; and a sealing device connected with the casing and corresponding to the inner shaft sleeve, the sealing device being provided with a sealing sawtooth; wherein the tooth shapes of the shaft sleeve sawtooth and the sealing sawtooth are staggered. The axial force balancing mechanism and the turbo expander can realize the balance adjustment of the axial force of the expander.

The application discloses a fuel cell air supply system based on a compression-expansion integrated machine and a control method. The system comprises a compressor, an air inlet of the compressor being used for connecting air; an air cooler, an air inlet of the air cooler being connected with an air outlet of the compressor, and an air outlet of the air cooler being connected with an air inlet of a fuel cell stack; and a turbo-expander, an air inlet of the turbo-expander being connected with an air outlet of the fuel cell stack. The compressor and the turbo-expander are coaxially and oppositely arranged, and are connected through a motor. A discharge valve is arranged on a connecting pipeline between the air outlet of the fuel cell stack and the air inlet of the turbo-expander, and the discharge valve can discharge exhaust gas discharged through the air outlet of the fuel cell stack. The application can guarantee the stability of the air supply system under low working conditions, and improve the variable working condition adaptability of the fuel cell air supply system based on the compression-expansion integrated machine.

The invention relates to the technical field of industrial refrigeration, and discloses a fermentation heat-expansion work self-circulation refrigeration system which comprises a refrigerant circulation loop used for bearing carbon dioxide serving as a refrigerant to circularly flow in the refrigerant circulation loop, the refrigerant circulation loop is sequentially provided with an evaporator, a compressor, a condenser and an expansion machine with a power output shaft in series; and the chilled water circulation loop comprises a heat exchange component arranged in the fermentation tank, a circulating water pump and a connecting pipeline, and the chilled water circulation loop exchanges heat with the refrigerant circulation loop through the evaporator and is used for transferring fermentation heat generated in the fermentation tank to the carbon dioxide refrigerant. The radial centripetal turbine expansion machine is arranged to replace a traditional throttling valve, and is matched with work recovery and coupling mechanisms such as the planetary gear reduction box and the electromagnetic clutch, high-pressure potential energy released by supercritical carbon dioxide in the expansion process is converted into mechanical work, and the mechanical work is directly used for driving the compressor to run.

An air separation system using a membrane separation unit to produce a nitrogen-enriched product stream from a feed air stream is described herein. A nitrogen-enriched non-permeate stream is expanded in a turboexpander and the energy recovered during expansion is used to further compress the feed air stream prior to membrane separation. Expanded nitrogen-enriched non-permeate stream is also used to cool the compressed feed air upstream from membrane separation.

The present invention discloses a system for generating water recycling and humidification, which has the following circulation paths: Cooling water circuit circulation: The fuel cell stack flows through a temperature sensor and a pressure sensor and enters the coolant water pump, then flows into the evaporator, passes through the evaporator and enters the radiator, and then reaches the flow control valve and is divided into two paths. One path flows through the pressure sensor and the temperature sensor and enters the fuel cell stack, and the other path enters the intercooler and then converges to the cooling pipeline at the outlet of the fuel cell stack. Air circuit circulation: Air flows through the air filter and the mass flow meter and enters the condenser, then enters the turboexpander. The pressurized dry air flows through the temperature sensor and reaches the mixing chamber, where it is mixed with the water vapor generated by the evaporator and then flows through the humidity sensor, the pressure sensor and the temperature sensor and enters the fuel cell stack. The condenser receives the generated products of the fuel cell stack, then the condensed water enters the water pump, and the other gas products enter the turboexpander and then flow through the exhaust mixing chamber and are discharged.

The system is characterized by comprising a cold box, a gas-liquid separator, a heat regenerator and a turbine generator set, the cold box is provided with three outlets, one outlet of the cold box is connected with the gas-liquid separator through a pipeline, the gas-liquid separator is provided with two outlets, one outlet of the gas-liquid separator is connected with the cold box through a pipeline, and the other outlet of the gas-liquid separator is connected with the turbine generator set through a pipeline. A second outlet of the cold box is connected with a heat regenerator through a pipeline, the heat regenerator is connected with a turbine generator set through a pipeline, and the turbine generator set is connected with the cold box through a pipeline; on one hand, toluene is condensed and recovered, consumption of water vapor and electric energy is reduced, discharge of waste water is reduced, and the purposes of reducing production cost, saving energy and reducing emission are achieved. Meanwhile, the methylbenzene oxidation pressurized tail gas is used for expanding to do work to generate power, energy contained in tail gas emission is converted into electric energy, and economic benefits are created for enterprises.

The present application relates to the technical field of energy-saving power generation of turboexpander, in particular to a vibration suppression system of high-performance turboexpander under wide-range operating conditions, which comprises a shell damping assembly arranged on the primary impeller shell and the secondary impeller shell, and a damping seat assembly arranged at the bottom of the generator; the bottom of the motor leg is supported on the support base through the damping seat assembly, and an impeller shell support is fixedly arranged on the support base to reduce the vibration caused by the uneven rotor mass through the damping seat assembly; the impeller shell support is connected with the primary impeller shell and the secondary impeller shell through the shell damping assembly to reduce the vibration caused by the airflow excitation of the turboexpander.

The application discloses a gas-suspension low-temperature turbine expander, which comprises a main shaft, an expansion end diffuser, an expansion end impeller, a nozzle, an expansion end volute, an expansion end cover plate, a shell, an axial displacement fixing device I, a thrust disc I, an exhaust pipeline, a thrust disc II, an axial displacement fixing device II, a braking end cover plate, a connecting pipeline, a spiral refrigeration pipeline inlet, a spiral refrigeration channel, a spiral refrigeration pipeline outlet, a braking end volute, an electric adjusting device, a sealing device, a braking end inlet flow guide section, an adjustable filter screen, a fixed filter screen, a braking end impeller, a braking end diffuser, a heat dissipation fin, a labyrinth sealing exhaust passage, an electric eddy current sensor, an air inlet pipeline, a labyrinth seal, a water pump, a water inlet pipeline and a waterway connecting pipeline. Cold energy is generated at the expansion end, and the braking end closed loop adjusts the load to ensure safe operation. The gas-suspension bearing is full-movement, and effectively supports the stable operation of the rotor at an ultrahigh rotating speed. The device can be used as a core cold production device in the liquefaction, separation and refrigeration process of helium, hydrogen, nitrogen and air. The device has compact overall structure, high environmental adaptability and high reliability, and realizes the design goals of oil-free operation and economic efficiency.

A hydraulic or pneumatic actuator for a valve, in particular a trip valve which may be used to cut-off the fluid supplied to an expander when a fault occurs, e.g. when pressure drops under a predetermined pressure value. The innovative actuator has a movable plate having a first side associated to a spindle of the valve through a rod and a second side associated to a spring which is configured to move the movable plate. The actuator is provided with a testing system configured to measure the elastic force of the spring without closing partially or totally the valve, in order to check the correct condition of the spring.

The application relates to the technical field of low-temperature refrigeration, in particular to a low-temperature turboexpander. The low-temperature turboexpander comprises an integrated expansion volute, a fan volute connected with the expansion volute and a main machine arranged in the expansion volute, an end plate of the expansion volute and the fan volute is fixed to an external cold box, so that the expansion volute and the main machine are completely located in the cold box, the main machine comprises a main unit and a secondary unit which are integrally assembled and detachably connected with each other, the main unit is related to the shaft power grade of the turboexpander, and the secondary unit is related to the design requirement of the turboexpander. The technical scheme can effectively guarantee the assembly precision, reduce the heat leakage to the outside and improve the production efficiency.

A method for separating a mixed feed stream may include: compressing and cooling the mixed feed stream; separating the mixed feed stream into a first vapor stream and a first liquid stream; cooling the first vapor stream to form a cooled stream; separating the cooled stream into a second vapor stream and a second liquid stream; passing the second vapor stream through one or more heat exchangers to produce a warmed second vapor stream; reducing the pressure of the warm second vapor stream in the turboexpander, wherein work is extracted from the warm second vapor stream to form a second coolant stream; and using work from the turbo expander to drive a generator, a turbo compressor, or both.

The invention relates to the technical field of rotating speed sensors, in particular to a rotating speed sensor for a hydrogen turbo expander. The rotating speed sensor comprises a shell fixed on a shell of the hydrogen turbo expander, a through hole is formed in the end, extending into the shell, of the shell, and a reflective mark is arranged on a rotating shaft of the hydrogen turbo expander; the connecting assembly is fixed to the inner wall face of the shell, a light-transmitting piece is arranged at the position, close to the through hole, of the connecting assembly, and a sealing structure is arranged between the connecting assembly and the shell; and the sensor unit adopts a photoelectric rotating speed sensor, the sensor unit is detachably arranged in the connecting assembly, a probe of the sensor unit faces the light transmitting piece, and the probe is used for capturing the position of the reflective mark so as to measure the rotating speed of the rotating shaft. According to the technical scheme, the rotating speed of the hydrogen turbo expander can be safely and effectively measured.

The invention provides a nozzle structure, a control method, a control system and a turbo expander, the nozzle structure comprises an annular nozzle body and a plurality of blades arranged in the circumferential direction of the nozzle body, and a flow channel is formed between every two adjacent blades; the blade comprises a driving layer driven based on shape memory alloy, and the driving layer is connected with an external driving circuit. The external driving circuit sends a target driving electrical parameter control signal to the driving layer based on the target width of the throat part of the flow channel, the driving layer drives the blades to generate directional deformation under the driving of the target driving electrical parameter, and the throat part width of the flow channel is converted into the target width; wherein the target width is determined based on the flow parameter of the fluid flowing through the flow channel. Under the driving action of an external driving circuit, the blades can generate continuous flexible deformation, so that the width of the throat part of the flow channel reaches the target width, the dynamic adjustment of the throat part width is realized, the adjustment does not cause leakage, and the strict requirement of the high-parameter turbo expander on the variable working condition efficiency is met.

The invention discloses a movable integrated cooling device for an underground roadway. The movable integrated cooling device comprises an integrated control box, and a turbocharger, a water-cooling heat exchanger and a turbo expander are arranged in the integrated control box; a water cooling filter and an air filter are arranged outside the integrated control box body; the water-cooling filter is connected with the water-cooling heat exchanger through a water-cooling pipeline; the air filter is connected with an air inlet of the turbocharger through a normal-temperature air inlet pipeline; an exhaust pipe of the turbocharger is connected with an air inlet of the turbo expander through a heat exchange pipe of the water-cooling heat exchanger; a low-temperature air controller is arranged at an air outlet of the turbo expander; the turbocharger and the turbo expander share a coaxial magnetic suspension motor with double-side output; the main function is to replace a traditional air-conditioning system to solve the problem of heat damage to underground roadways. The device has the advantages of being small in size, convenient to move, free of a long-distance pipeline, free of a fan for conveying cooling capacity, and suitable for use and cooling.

1. The name of the design product: turbine expander brake circulator. 2. The use of the design product: turbine expander brake circulator is suitable for turbine expander brake side, which supports and guides gas for turbine expander brake side. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

A hydraulic or pneumatic actuator (100, 200) for a valve, in particular a trip valve which may be used to cut-off the fluid supplied to an expander when a fault occurs, e.g. when pressure drops under a predetermined pressure value. The innovative actuator has a movable plate (30) having a first side (31) associated to a spindle of the valve through a rod (21) and a second side (32) associated to a spring (40) which is configured to move the movable plate. The actuator is provided with a testing system (50) configured to measure the elastic force of the spring without closing partially or totally the valve, in order to check the correct condition of the spring.

A system for processing a natural gas stream includes a flow-through turboexpander generator, a throttle valve, a knockout separator, and an absorption separator. The flow-through turboexpander generator is configured to receive a first portion of the natural gas stream and generate electrical power in response to expansion of the first portion of the natural gas stream. The throttle valve is configured to reduce a pressure of a second portion of the natural gas stream. The knockout separator is configured to receive the first portion of the natural gas stream from the flow-through turboexpander generator and configured to separate phases of the first portion of the natural gas stream to produce at least a gaseous phase and an aqueous phase. The absorption separator is configured to receive the gaseous phase from the separator vessel and separate water from the gaseous phase to produce a dehydrated natural gas stream.

The invention discloses an emergency air conditioning system and method for a power station electronic equipment room based on compressed air. The system comprises a cold storage and supply module, a vortex tube cold supply module and a turbo expander cold supply module. According to the system, compressed air in an air storage device of a power station is used as emergency energy, a multi-redundancy cold supply path is formed through four modes of cold energy pre-storage of a cold storage tank, vortex tube cooling, heating and power co-production, turbo expander cooling and power co-production and semiconductor refrigeration local temperature control, and global and local combined precise temperature control is achieved; in addition, a solution dehumidification unit and a membrane separation deoxidization unit are integrated, and the environment requirements of constant temperature, constant humidity, constant oxygen and micro-positive pressure are synchronously guaranteed by utilizing waste heat. The system realizes self-sufficiency and cascade efficient utilization of energy, has modular expansion and air pressure-based graded response capability, is beneficial to emergency environment guarantee between electronic equipment under the condition of power loss of the whole plant, and has the characteristics of high reliability, high energy efficiency, economical efficiency and the like.