10results about "Combination engines" patented technology

A rotor-stator assembly for a rotary engine, compressor or pump, includes a rotor arranged to rotate eccentrically in a stator chamber, the geometry of the rotor being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor and the inner peripheral wall of the stator chamber. A second fluid seal is provided by means of a component rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber by means of bearings and slides along the inner surface of the stator chamber, and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor, the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber.

The invention belongs to the technical field of oil and gas development, and provides a wellhead expansion machine type selection method and system, a storage medium and electronic equipment.The method comprises the steps that on the basis of parameters of a gas well wellhead, the volume flow of gas produced by the wellhead is calculated, and the total available isentropic specific enthalpy drop under the two conditions of wellhead pressure and gas collection pressure is obtained; determining the well mouth parallel connection number and the expansion machine configuration mode; the isentropic specific enthalpy drop of the expansion machine is calculated based on the configuration mode of the expansion machine, the impeller diameter of the expansion machine and the rated volume flow; based on the isentropic specific enthalpy drop of the expansion machine and the total available isentropic specific enthalpy drop under the two conditions of wellhead pressure and gas collection pressure, the number of stages of the expansion machine is calculated; based on the rated rotating speed and the isentropic specific enthalpy drop of the expansion machine, the rotating speed and the isentropic specific enthalpy drop of the expansion machine are calculated and adjusted, and the final rotating speed and the final isentropic specific enthalpy drop of the expansion machine are obtained; and calculating the power of the expansion machine. The pressure energy recycling rate is increased, electric heating and use of an anti-freezing agent are reduced, and the cost is saved.

A rotor-stator assembly for a rotary engine, compressor or pump, comprises a rotor (3, 4) arranged to rotate eccentrically in a stator chamber (1, 2), the geometry of the rotor (3, 4) being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor (3, 4) and the inner peripheral wall of the stator chamber (1, 2), whereby a second fluid seal is provided by means of a component (15) rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber (1, 2) by means of bearings and slides along the inner surface of the stator chamber (1, 2), and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor (3, 4), the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber (1, 2).

A method of flow of the working agent in a heat machine based on the Stirling cycle is characterized in that the working agent compression and decompression processes take place exclusively in the working chambers, and once the compression and decompression processes are complete, the entire working agent leaves the working chambers, where the transport between the said working chambers takes place at constant volume. A heat machine based on the Stirling cycle comprising a cold chamber (2) and a hot chamber (1), placed inside of which are impellers (12, 21) fitted with vanes (13, 20) guided along the inner surfaces of the chambers. The impellers (12, 21) are fitted on a common shaft (4) positioned in the chamber axis. The volumes of the working spaces (14, 19) formed between the said vanes (13, 20) change as the impeller rotates, and the total combined volume of the working spaces of the hot and cold chambers does not change when the spaces are combined, where the compression and decompression of the working agent takes place exclusively in the respective chamber.

The present invention provides an oscillating engine (10) comprising a chamber (510) within a casing (20), a rotatably oscillating vane (570) within the chamber (510), an outlet shaft (10) connectable to the vane (570), an inlet valve (420) connectable to the output shaft (10), and an outlet valve connectable to the output shaft (10), wherein the vane (570), inlet valve (420), and outlet valve are arranged to rotatably oscillate in synchrony with each other.

A hybrid-electric aircraft propulsion system includes an engine, a first electric machine assembly, and a second electric machine assembly. The engine includes a first rotational assembly and a second rotational assembly. The first electric machine assembly includes a first electric machine, a first control unit, first electrical cables, and a first cable conduit. The first electric machine is coupled with the first rotational assembly. The first electrical cables extend between and electrically connect the first electric machine and the first control unit through the first cable conduit. The second electric machine assembly includes a second electric machine, a second control unit, second electrical cables, and a second cable conduit. The second electric machine is coupled with the second rotational assembly. The second electrical cables extend between and electrically connect the second electric machine and the second control unit through the second cable conduit.

This utility model discloses an arrangement structure for the coordinated operation of a back-pressure steam turbine and a rear-mounted steam turbine. In this arrangement, the back-pressure steam turbine and the rear-mounted steam turbine are connected by a connecting pipeline, on which a control valve for the rear-mounted turbine is installed. A branch pipeline on the connecting pipeline connects to the user's heating system, and a heating regulating valve is installed on the branch pipeline. The output pipeline of the rear-mounted steam turbine is connected to the condenser of the rear-mounted turbine, and a steam bypass valve is installed on the output pipeline. The steam discharge pipeline of the rear-mounted steam turbine leads to the condenser of the rear-mounted turbine. This arrangement allows for the complete utilization of the exhaust steam from the back-pressure turbine. Compared to a structure with only a back-pressure steam turbine, this arrangement offers higher energy utilization of waste heat steam when user heating demand is low. Furthermore, it ensures the safe operation of the back-pressure turbine even under large fluctuations in user heating demand, while simultaneously recovering steam energy and increasing power generation.

A system (100) is designed to generate electrical power from human-driven mechanical input by amplifying low-speed motion into high-speed rotation. A blower (102), operated by human effort, produces pressurized air that drives a smaller turbine (104), enabling it to spin faster than the blower (102). The pressurized air is further passed through one or more turbine-blower stages (106) arranged in series, each stage further compressing the air and increasing the rotational speed of the subsequent turbine. This cascading effect results in the final turbine achieving significantly higher speeds than the initial human input. The mechanical energy from this high-speed turbine is transferred to an alternator (108), which converts the rotational motion into electrical power. The system (100) effectively transforms low-speed human energy into usable electricity by leveraging staged air compression and turbine acceleration, making it a practical solution for portable or emergency power generation.

This application relates to the field of heat engine equipment technology, and in particular to turbine mechanisms and steam turbine systems. It includes a cylinder block, a rotating shaft, a first turbine assembly, and a second turbine assembly. The rotating shaft extends through the cylinder block along a first direction. The second turbine assembly is positioned opposite to the first turbine assembly along the first direction. A first air inlet is located between the first and second turbine assemblies, and a first exhaust port is located at the end of the second turbine assembly furthest from the first turbine assembly. Airflow entering from the first air inlet passes through the first and second turbine assemblies and exits the cylinder block through the first exhaust port. This turbine mechanism maintains the high efficiency of a large turbine by only reversing the orientation of the second turbine assembly, making it opposite to the first turbine assembly, thus achieving forward and reverse flow of supercritical carbon dioxide, balancing axial thrust, reducing the number of equipment and connecting parts, lowering costs and energy losses, simplifying the control system, and improving operational stability and maintenance convenience.