14 results about "Turboexpander" patented technology

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 (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.

This invention relates to the field of thermoacoustic linear generators, and provides a thermoacoustic engine-driven turbine expansion power generation system. The thermoacoustic engine-driven turbine expansion power generation system includes a thermoacoustic engine unit, an acoustic diode rectifier unit, and a turbine expansion power generation unit. This thermoacoustic engine-driven turbine expansion power generation system combines the advantages of high efficiency and no moving parts in thermoacoustic engines with the mature technology and high power density of turbine expansion power generation, constructing a novel thermoacoustic-electric conversion technology solution. It breaks through the technological path dependence of existing reciprocating linear generators, effectively solving the problem that existing thermoacoustic linear generators cannot meet the demand for high-power generation, reducing technical difficulty and manufacturing costs, and has a wide range of applications, with good environmental benefits and economic value.

A method of operating an aircraft power plant (112) includes: driving a load (16) onboard an aircraft with a combustion engine (14); heating a solid metal hydride (34) onboard the aircraft to cause hydrogen gas (26) to be released from the solid metal hydride (34); expanding the hydrogen gas (26) through a turbo-expander (38) to produce work; and using the work produced by the turbo-expander (38) to drive the load (16).

This application provides a turbo expander and its control method, relating to the field of expander technology. The expander body has a fluid channel, with an inlet pipe connected to the inlet end of the fluid channel and an outlet pipe connected to the outlet end of the fluid channel. A first information acquisition component is installed on the inlet pipe to collect fluid parameters, and a second information acquisition component is installed on the outlet pipe to collect fluid parameters. Multiple nozzle blades are disposed in the fluid channel near the inlet end and are movably connected to the expander body. Adjacent nozzle blades form nozzles through which fluid flows. The nozzle blades move relative to the expander body based on the information collected by the first and second information acquisition components to adjust the nozzle opening. By adjusting the nozzle opening according to fluid parameters to control the fluid flow rate, the fluid flow rate entering the expander's fluid channel can be precisely controlled.

FIELD: gas production.SUBSTANCE: invention relates to the field of production and preparation of natural gas from Valanginian deposits for long-distance transportation at complex gas treatment units (CGTU) during peak loads for gas production at oil and gas condensate fields (OGCF) in the North of the Russian Federation, implementing automatic load distribution between process lines (PL) for low-temperature gas separation with turbo-expander units (TEU), with simultaneous maintenance of the level of unstable gas condensate (UGC) in three-phase liquid separators (LS), its density and flow control when feeding into the main condensate pipeline (MCP), as well as control of the flow of dried gas at the CGTU. The purpose of the invention is to ensure automatic load distribution between the PL with the TEU during peak loads for gas production at the CGTU, maintaining the filling level of the OGC in the LS within the required limits, controlling its density and flow rate taking into account the state of the equipment involved in the process of preparing natural gas for long-distance transportation, while observing the standards and restrictions stipulated by the process regulations of the installation for various modes of its operation. The claimed method allows, at the CGTU, during peak loads of dry gas consumption by consumers, to ensure automatic load distribution between the PL with the TEU and the preparation of OGC from natural gas at all stages of the OGCF operation.EFFECT: maintaining the filling level of OGC in the LS within the required limits, controlling its density and consumption at the CGTU, taking into account the condition of the equipment involved in the process of preparing natural gas for long-distance transport, while observing the standards and restrictions stipulated by the process regulations of the unit for its various operating modes.4 cl, 2 dwg

A compressor waste heat-driven ORC-VCR coupled freeze-drying system and method are disclosed. The system includes an organic Rankine cycle module, a vapor compression refrigeration cycle module, a freeze-drying module, an air compression module, and a compression inlet precooling module. The organic Rankine cycle module consists of an ORC condenser, a two-stage turboexpander, an ORC evaporator, and a working fluid pump. The vapor compression refrigeration cycle module consists of a centrifugal compressor, a VCR condenser, a throttling valve, a drying heat exchanger, and a compression inlet precooler. The first-stage turboexpander is coaxially connected to the centrifugal compressor, and the second-stage turboexpander is coaxially connected to the working fluid pump. The freeze-drying module includes a freeze-dryer inlet precooler, a precooling gas-liquid separator, and a main gas-liquid separator. The air compression module recovers waste heat through a high-temperature water heat exchanger and provides a heat source for the organic Rankine cycle. The compression inlet precooling module achieves inlet precooling and gas-liquid separation. This invention solves the problem of compressor waste heat waste and improves system energy efficiency.

This invention belongs to the field of wastewater treatment technology, and particularly relates to an improved wet oxidation treatment device. The invention provides an improved wet oxidation treatment device in which a feed pump and an air compressor are connected to a heat exchanger, and an oxidation tower, heater, gas-liquid separator, turbine expander, steam turbine generator, and exhaust gas treatment device are arranged. This allows for: 1. The heater directly heats the wastewater in the oxidation tower, ensuring thorough oxidation and preventing coking, thus maximizing the continuous operation cycle of the device; 2. The high-temperature steam separated by the gas-liquid separator is converted into electrical energy by the turbine expander and steam turbine generator to power the heater. High-temperature hot pressurized water enters the shell side of the preheater, simultaneously cooling and heating the wastewater in the tube side, resulting in thorough resource utilization and energy conservation; 3. The exhaust gas treatment device purifies the waste gas, increasing the applicability of the device; 4. The heat exchanger ensures that the hot pressurized water does not come into contact with the wastewater during heating, saving treatment costs and streamlining the process, resulting in high wastewater treatment efficiency.

The utility model discloses a kind of ammonia circulation gas turbine-double turbine expander combined structure, including air supply unit, compressor, combustor, gas turbine and flue gas discharge channel being sequentially connected in series, and coil pipe, booster pump, turbine expander, compressor is mechanically linked with gas turbine by a rotating shaft, first coil pipe is filled with ammonia decomposition catalyst, liquid ammonia supply unit is sequentially connected booster pump, second coil pipe, first turbine expander, first coil pipe, second turbine expander and fuel regulating valve by pipeline, finally access the fuel inlet of combustor;The output end of first turbine expander and second turbine expander is connected kinetic energy conversion device respectively.The utility model is to the staged utilization of ammonia fuel energy by double turbine expander, combined with the heat exchange of flue gas waste heat in coil pipe and the chemical energy release of ammonia decomposition, when not combined with heat and power, single machine thermal efficiency can be as high as 70% or more, compared with traditional single cycle gas turbine efficiency is greatly improved.

The utility model relates to a megawatt radial turbo expander rotor structure which comprises a main shaft body, a thrust ring is installed outside the main shaft body, an impeller body is connected outside the main shaft body in a sleeved mode, and an anti-falling machine is arranged outside the main shaft body. The anti-falling mechanism comprises a fixing ring, a clamping ring, a transverse rod, a clamping block, a baffle, a protective cover and a fixing screw, the main shaft body is sleeved with the fixing ring, the main shaft body is sleeved with the clamping ring, the transverse rod is connected to the left side of the clamping ring, and the clamping block is installed at the bottom of the transverse rod. According to the megawatt radial turbo expander rotor structure, firstly, the fixing ring is fixed outside the main shaft body, then the main shaft body is sleeved with the impeller body, the left side of the impeller body is attached to the fixing ring, at the moment, the main shaft body penetrates through the clamping ring, it is guaranteed that the clamping ring abuts against the impeller body, and meanwhile the clamping block enters the clamping groove; and finally, a protective cover is mounted outside the main shaft body and is stably fixed through fixing screws.

The application discloses a coal chemical black water waste heat ORC power generation system, which comprises a low-pressure flash separation tank, a double-working medium storage tank, an evaporator, a temperature sensor and a controller. The double-working medium storage tank is internally partitioned into a first chamber and a second chamber, the first chamber is internally provided with a first evaporating working medium, and the second chamber is internally provided with a second evaporating working medium. The evaporator is provided with a first evaporating branch and a second evaporating branch in parallel, and the outlets of the first evaporating branch and the second evaporating branch are jointly connected to the inlet of a turbine expander. The temperature sensor is in signal connection with the controller, a first electromagnetic valve and a second electromagnetic valve. When the temperature of black water is higher than a preset threshold value, a black water discharge pipeline is in communication with the first chamber. When the temperature of black water is lower than the preset threshold value, the black water discharge pipeline is in communication with the second chamber. The controller dynamically adjusts the working medium selection according to real-time temperature data, ensures that the system always works at an optimal efficiency point, and improves the working stability of the turbine expander.

This utility model relates to the field of fuel cell system technology, specifically disclosing a compact fuel cell air system with high-efficiency energy recovery. The fuel cell system includes a fuel cell stack, a centrifugal air compressor, a three-in-one valve, an air filter, a first flow sensor, an intercooler, a high-temperature cooling cycle system, a first temperature sensor, a first pressure sensor, a cathode steam-water separator, a drain valve, a second temperature sensor, a second pressure sensor, and a second flow sensor. The centrifugal air compressor includes a compressor and a variable geometry turboexpander. The three-in-one valve includes an inlet shut-off valve, an outlet shut-off valve, and a bypass valve. The intercooler is connected to the high-temperature cooling cycle system. The compact fuel cell air system with high-efficiency energy recovery provided by this utility model can more efficiently recover the energy from the low-flow residual air discharged from the fuel cell stack, while making the system more compact and reducing costs.

1. The name of the design product: low-temperature turboexpander. 2. The use of the design product: used in gas liquefaction separation equipment to produce cold energy and to pressurize low-temperature gas. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view 1.