7results about How to "Improve working ability" patented technology

The application discloses a geothermal energy adjustable power generation system based on carbon dioxide working medium, which comprises a power generation well, a temperature and pressure adjusting device connected through a pipeline, a gas-liquid heat exchange device connected with the temperature and pressure adjusting device at one end and connected with a steam superheating device at the other end, a heat supply device and a turbine arranged on the steam superheating device, a power generation device connected with the turbine, the power generation device connected with the gas-liquid heat exchange device through a pressure adjusting device, a plunger pump connected with a recharging well at one end and connected with the gas-liquid heat exchange device through a refrigeration device at the other end. The system can further heat the carbon dioxide working medium after being converted into steam, thereby improving the temperature and pressure of the steam and the power generation efficiency of the turbine. Moreover, the output of the heat supply device is adjusted, the rotating speed of the turbine and the output power of the power generation device are adjusted, the adjustability of the power generation capacity is realized, and the defect of the vacancy of the technology in China is solved.

The application discloses a fan blade and a fan. The blade is divided into multiple different structural sections from a blade root to a blade tip. Different structural sections have different airfoils. The airfoil cross sections of different structural sections from the blade root to the blade tip are the same as the airfoil cross sections taken in the wingspan direction. The blade is segmented in the length direction. Different sections of the blade are segmented according to different airfoils of owls. The bionics is simplified. The pressure difference between the upper surface and the lower surface of the fan blade is increased. The aerodynamic noise is reduced by using the airfoil principle of the owl. The structural sections have the same airfoil structure as the corresponding part of the owl airfoil. The structural sections have the same noise reduction effect as the part of the owl airfoil. The noise reduction and the cost are comprehensively optimized. The blade has good structural strength.

A double-air-inlet centrifugal fan comprises a volute and an impeller rotationally arranged in the volute, a first air inlet, a second air inlet and an air outlet are formed in a front cover plate and a rear cover plate of the volute respectively in the lateral direction, and the double-air-inlet centrifugal fan is characterized in that a center shaft is arranged in the volute; the front end and the rear end of the central shaft are respectively connected to a front cover plate and a rear cover plate of the volute; the impeller comprises an outer rotor, a blade assembly, a first connecting flow guide face and a second connecting flow guide face. The first connecting flow guide face and the second connecting flow guide face are arranged between the impeller assembly and the outer rotor, in this way, after double-face air inlet, turbulent vortexes formed at the air inlets in the two ends of the impeller can be eliminated, the working capacity of the impeller is improved, and noise caused by deterioration of the turbulent vortexes at the inlet of the impeller is further lowered.

The application provides a peak shaving power generation system coupling molten salt heat storage and steam turbine supplementary steam, and relates to the technical field of thermal engineering. The system comprises a low-temperature molten salt tank, a molten salt heater, a high-temperature molten salt tank, a molten salt steam-water heat exchanger, a gas boiler, a steam turbine and a feedwater system. The molten salt heater receives low-temperature molten salt pumped into the low-temperature molten salt tank by a low-temperature molten salt pump during the low electricity consumption period, and heats the low-temperature molten salt by the heat of main steam provided by the gas boiler. The high-temperature molten salt tank receives and stores the high-temperature molten salt obtained by heating. The molten salt steam-water heat exchanger receives high-temperature molten salt pumped into the high-temperature molten salt tank by a high-temperature molten salt pump during the high electricity consumption period, and transfers the heat energy of the high-temperature molten salt to high-pressure feedwater from the feedwater system to generate superheated steam. Part of the superheated steam is sent into a main steam main pipe connected with the gas boiler. The application can effectively improve the steam turbine power generation efficiency, realizes efficient utilization of heat energy and flexible adjustment of power grid load.

The invention discloses a liquid compressed carbon dioxide energy storage system capable of recycling waste heat and an operation method, and belongs to the technical field of energy storage. The system comprises a liquid carbon dioxide storage unit, a cold storage unit, a compression unit, an expansion unit, a heat storage unit and a waste heat utilization unit which are connected through pipelines. The cold storage unit is used for storing and releasing cold energy; the compression unit is used for realizing step-by-step pressurization of carbon dioxide, and generated compression heat is stored by the heat storage unit; the expansion unit preheats high-pressure carbon dioxide through the stored compression heat and then expands the high-pressure carbon dioxide to do work; the waste heat utilization unit is arranged in a system circulating water path and used for recycling waste heat in the system. By additionally arranging the waste heat recovery device, compression heat and waste heat in the system are efficiently recovered and used for preheating carbon dioxide before acting, the acting capacity of the carbon dioxide is remarkably improved, the circulating efficiency and the energy storage density of the system are improved, and meanwhile the operation cost is reduced.

The utility model provides a kind of impeller and the centrifugal fan comprising it, impeller includes front disc, rear disc and blade, blade is connected in front disc and rear disc, blade is cut from the export end of blade towards the import end of blade along the chord length direction of blade near front disc, to form the transition section along the axial direction of impeller close to front disc and main blade section close to rear disc, along chord length direction, transition section is partially connected with main blade section, the export angle of transition section is greater than the export angle of main blade section. By cutting blade to form transition section and main blade section, and the export angle of transition section is set to be greater than the export angle of main blade section, the flow rate of airflow in transition zone is increased, to avoid forming larger vortex zone at the wall surface of volute close to front disc, so as to improve the work capacity of transition section, and then improve the work capacity of impeller as a whole, improve the efficiency of centrifugal fan with the impeller.

The utility model relates to an adjustable unmanned ship sensor rapid installation device which is formed by integrally installing a bottom frame, a supporting frame and a top frame, and the bottom frame comprises a bottom plate and bottom supporting legs; the supporting frame takes a supporting pipe vertically fixed on the bottom plate as a main body, a rotatable transmission pipe is arranged in the supporting frame, the upper end extends out of the supporting pipe, and the lower end penetrates through the bottom plate; the top frame is connected with the transmission pipe through a connecting column, the column bottom is provided with an inserting groove in butt joint with the transmission pipe, and the middle is provided with an outer lock hole matched and locked with an inner lock hole of the supporting pipe. A plurality of bearing beams are fixed on the periphery of the connecting column, and each beam is provided with an adjusting groove and a mounting seat with a bolt hole; besides, the device is provided with a rotating power mechanism, the power output end of the rotating power mechanism is in transmission connection with the supporting pipe, the horizontal positions of the bearing beam and the sensor are adjusted by driving a transmission pipe to rotate, secondary fine adjustment of the position of the sensor can be achieved by combining the design of an adjusting groove of the bearing beam, and the requirements of different monitoring scenes are met. Compared with a traditional fixed sensor, the design is more flexible and practical.