34results about How to "Improve functional ability" patented technology

The invention discloses a power station air cooling system adopting combined refrigeration with shaft seal steam leakage of a steam turbine and continuous blow-down waste heat of a boiler. The system is characterized in that the steam turbine is communicated with a steam source, the steam turbine is connected with an electric generator, and the steam turbine is sequentially communicated with an air-cooling condenser, a condensate pump and boiler feedwater; the steam turbine is sequentially communicated with a steam leakage condenser, a steam leakage condensate pump and the boiler feedwater; boiler blow-down water is sequentially communicated with a flash tank, a deaerator, a working medium superheater and a drainage ditch; the steam leakage condenser is sequentially communicated with the working medium superheater, and a generator is communicated with the steam leakage condenser through a working medium circulating pump; the generator is sequentially communicated with a condenser, a first throttling valve and an evaporator, the evaporator is communicated with an absorber, and the generator is sequentially communicated with a second throttling valve, the absorber, a solution pump and a generator; and air is sequentially communicated with the evaporator, an induced draft fan and the air-cooling condenser. A method for predicting a heat-transfer coefficient of the air-cooling condenser is further provided.

The invention discloses a liquefied air energy storage and thermoelectric power generation coupling system and a working method thereof. The system comprises an air compression device, an air liquefaction device, a liquid air pressurizing gasification device, an air expansion device, a thermoelectric power generation device and a heat and cold storage device. According to the working method of the system, in the energy storage stage, the air compression device, the air liquefaction device and the heat and cold storage device are in a working state to consume external electric energy to realize air liquefaction storage and compression heat recovery; and in the energy release stage, a supercritical working mode is adopted, the liquid air pressurizing gasification device, the air expansion device, the thermoelectric power generation device and the heat and cold storage device are in the working state, power is supplied outwards through the air expansion device and the thermoelectric power generation device, and liquid air gasification latent heat recovery is completed. The semiconductor thermoelectric power generation device is introduced into the liquefied air energy storage system, compression waste heat and expansion waste cold are used for driving the thermoelectric power generation device to output extra electric energy, the operation efficiency of the system can be improved, and waste heat emission can be reduced.

The invention provides an air inlet manifold and an automobile engine comprising the air inlet manifold. The air inlet manifold comprises a pressure stabilizing cavity and at least two air channels which are communicated with the pressure stabilizing cavity, wherein the pressure stabilizing cavity is provided with an air inlet connected with a throttle valve; the joints of the air channels and the pressure stabilizing cavity have unequal filleted structures by which air is uniformly distributed into each air channel after passing through the air inlet and being subjected to pressure stabilization in the pressure stabilizing cavity. Preferably, at the joints of the air channels and the pressure stabilizing cavity, the fillet of a single air channel vertical to the air inlet direction is greater than a fillet in the air inlet direction; at the joints of the air channels and the pressure-stabilizing cavity, the fillet of a first air channel in the air inlet direction is greater than the fillet of a tail air channel, and the fillet of a middle air channel is smaller than the fillets of the first air channel and the tail air channel. By adopting the structure, the air inlet pressure loss can be reduced effectively, the difference among the pressure loss of each air channel is lowered, the air inflow of each cylinder kept uniform while the air inflow of each cylinder is increased, and the power performance and economical efficiency of the engine are improved and increased.

The invention relates to a coupling energy saving device for multiple products of a sintering procedure. The coupling energy saving device comprises a sinter sensible heat efficient furnace cooling use system, a hot air sintering system, a sintering large flue waste heat use system and a power generation system. A comprehensive power generation device which is provided by the invention and makes use of waste heat of the multiple products in the sintering procedure can fully use sensible heat of sinters and waste heat of sintering flue gas in a sintering production process, so that the utilization efficiency is improved, and the service life of waste heat utilization equipment is prolonged; the sensible heat of the high-temperature sinters is used in the efficient furnace cooling system, so that the sinters can be cooled at high quality, and the waste heat utilization efficiency can be substantially improved; and compared with the conventional sinter sensible heat utilization efficiency, the waste heat utilization efficiency is improved by 60 percent or above.

The invention discloses three types of flow distribution carbon dioxide circulation systems based on internal combustion engine waste heat utilization. The three types of flow distribution carbon dioxide circulation systems include the low-temperature flow distribution carbon dioxide circulation system, a medium-temperature flow distribution carbon dioxide circulation system and a high-temperature flow distribution carbon dioxide circulation system. The three types of systems mentioned above each comprise specific parts, namely, a working medium pump, a cylinder sleeve cooling water heat exchanger, an intermediate heat exchanger, a low-temperature grade smoke heat exchanger, a high-temperature grade smoke heat exchanger, an expansion electricity generation integrated machine and a condenser. In the flow distribution carbon dioxide circulation systems suitable for internal combustion engine waste heat recovery, waste heat of the two parts, namely, internal combustion engine tail gas and internal combustion engine cylinder sleeve water, is efficiently and sufficiently absorbed and utilized at the same time through the adoption of trans-critical or super-critical carbon dioxide power circulation and through the different heat exchangers, and the system acting capacity is further improved by adopting a flow distribution system.

The invention discloses an outlet housing and an outdoor unit of an air conditioner. The outlet housing comprises an intermediate connecting plate, a plurality of fixing rings with different diameter,an outer frame fixing frame, a plurality of main air guide strips and a plurality of secondary air guide strips, wherein the outlet housing is divided into a first area which is close to the intermediate connecting plate, and a second area which is close to the outer frame fixing frame; each main air guide strip comprises a straight line section which is arranged at the first area, and a plurality of tangent arc sections which are arranged in the second area; each secondary air guide strip comprises circular arc sections which are staggered from the tangent arc sections; the circular arc sections are in the same bending direction with the circular arc sections. According to the outlet hosing, the straight line sections are arranged in the first area, and the second area is provided with the tangent arc sections and the circular arc sections, so that the air flowing capacity is improved; the loss of rotating kinetic energy is decreased; and the efficiency of an air blower is improved.

The invention discloses an air outlet grille of an air conditioner outdoor unit and the air conditioner outdoor unit. The air outlet grille comprises a middle connecting discloses, an outer frame fixing rack, fixing rings and air guide bars extending from the middle connecting disk to the outer frame fixing rack. The air guide bars are fixed to the fixing rings. The radial track of each air guide bar comprises a straight line section and a tangent arc section. The radial track of each air guide bar of the air outlet grille of the air conditioner outdoor unit is provided with the straight line section and the tangent arc section so that rotating air flow output by wind blades can be effectively collected. Loss of rotational kinetic energy is reduced. The power capability of wind energy is improved. The efficiency of an axial flow fan is improved.

The invention discloses a multilevel radial flow type counterrotating turbine structure. The multilevel radial flow type counterrotating turbine structure comprises a main impeller, an auxiliary impeller, a planet carrier, an outer gear ring and a sun gear, wherein a plurality of rows of main impeller blades distributed in the radial direction are arranged on the inner side of the main impeller; a plurality of rows of auxiliary impeller blades distributed in the radial direction are arranged on the inner side of the auxiliary impeller; the main impeller and the auxiliary impeller are parallel and are oppositely arranged, and rows of the main impeller blades and rows of the auxiliary impeller blades are distributed in a staggered mode in the radial direction; the axial center of the main impeller is fixedly connected with a shaft through a spoke belt, and the shaft passes through the center hole of the auxiliary impeller and is fixedly connected with the sun gear; the main impeller, the shaft and the sun gear are coaxially arranged; the auxiliary impeller and the outer gear ring are coaxial and are fixedly connected; the sun gear and the planet carrier are arranged inside the outer gear ring; the outer gear ring is meshed with the sun gear through a plurality of planetary gears on the planet carrier. By adopting the multilevel radial flow type counterrotating turbine structure, working capacity of a turbine is enhanced, and the size of the turbine is reduced; the power output structure of the planetary gears can be adjusted, so that wheel efficiency of the turbine is improved.

The invention relates to the technical field of fans, and particularly relates to a blade, an axial flow fan blade and a fan. The blade comprises a pressure surface, a suction surface, a blade root part, a blade top part, a front edge part and a rear edge part, wherein a cylindrical surface where the blade root part is located is defined as a blade root element surface, a cylindrical surface wherethe blade top part is located is defined as a blade top element surface, a cylindrical surface located between the blade root element surface and the blade top element surface is a 1 / 2 element surface, and a cylindrical surface located between the blade top element surface and the 1 / 2 element surface is a 3 / 4 element surface; and the maximum distance between the front edge part and the rear edgepart at the blade root element surface is l1, the maximum distance between the front edge part and the rear edge part at the 1 / 2 element surface is l2, the maximum distance between the front edge partand the rear edge part at the 3 / 4 element surface is l3, the maximum distance between the front edge part and the rear edge part at the blade top element surface is l4, and the values of 11, 12, 13 and 14 gradually increases. The outlet air speed can be effectively increased, the pneumatic performance of the blade is matched with a motor, and the air volume of the fan made of the blade is guaranteed.

The invention relates to the field of thermal power generation and discloses a double reheat thermodynamic system. The double reheat thermodynamic system comprises a steam turbine, a condenser, a by-pass turbine, a combination drive turbine, a high pressure heater; the steam turbine comprises an ultrahigh pressure cylinder, a high pressure cylinder, a medium pressure cylinder and a low pressure cylinder; an exhaust port of the ultrahigh pressure cylinder is respectively connected with the combination drive turbine and the high pressure heater; an extraction port is arranged on the combinationdrive turbine and the extraction port is connected with the high pressure heater; an exhaust port of the medium pressure cylinder is respectively connected with the low pressure cylinder and the by-pass turbine; and an exhaust port of the by-pass turbine is connected with the condenser. According to the thermodynamic system, the economy of an electric generating set can be greatly improved by thegradient utilization of energy; meanwhile, when the load of the electric generating set changes, it can be guaranteed that the high pressure cylinder, the medium pressure cylinder and the low pressurecylinder all work within a high efficiency working condition range, the station service power consumption rate can be reduced and the overall working performance of double reheat can be improved.

The invention relates to a waste heat recovery device for a sintering machine and a circulating cooling machine. The waste heat recovery device comprises a waste heat boiler of the sintering machine and a waste heat boiler of the circulating cooling machine. The waste heat boiler of the sintering machine comprises a waste heat boiler drum of the sintering machine, wherein the waste heat boiler drum of the sintering machine is provided with a steam outlet of the waste heat boiler of the sintering machine. The waste heat boiler of the circulating cooling machine comprises a waste heat boiler drum of the circulating cooling machine and a medium-pressure superheater. The waste heat boiler drum of the circulating cooling machine comprises a steam outlet of the waste heat boiler of the circulating cooling machine, wherein the steam outlet of the waste heat boiler of the sintering machine is connected with the steam outlet of the waste heat boiler of the circulating cooling machine, and the steam outlet of the waste heat boiler of the circulating cooling machine is connected with the medium-pressure superheater. According to the waste heat recovery device for the sintering machine and the circulating cooling machine in the structure provided by the invention, the quality of steam is effectively improved and the power capacity of a steam turbine is improved, so that the waste heat recovery rate is improved.

The invention discloses a water-gas double-working-medium energy storage method and system. A heat insulation device used for insulating heat transfer is arranged in a gas-liquid coexistence cabin, and a gas inlet and a liquid inlet of the gas-liquid coexistence cabin are connected with a gas temporary storage cabin and a water storage pool correspondingly and used for storing energy; the liquid outlet of the gas-liquid coexistence cabin is connected with the water storage pool for releasing the energy; and the gas outlet of the gas-liquid coexistence cabin is divided into two paths through a gas-liquid separator, one path is connected with the inlet of a gas buffering cabin, and the other path is connected with the water storage tank and used for gas-liquid separation and gas recycling. According to the water-gas double-working-medium energy storage method and system, the defect that the energy storage container of an existing energy storage system is insufficient in power capability due to gas temperature reduction in the energy release process is fundamentally overcome, the problem that the gas storage amount of the energy storage container is insufficient is solved, and meanwhile the power capability of the system can be flexibly adjusted.

The invention relates to an engine combustion device. The engine combustion device comprises a main combustion chamber, a spark plug, an auxiliary combustion chamber and flame spray holes, wherein initial flames are generated in the auxiliary combustion chamber through discharging of the spark plug, then the flames are generated in the auxiliary combustion chamber and develop rapidly, then multiple jet flames are generated through the plurality of spray holes used for connecting the auxiliary combustion chamber with the main combustion chamber, the multiple jet flames are jetted into the maincombustion chamber at the same time and are equivalent to a high-energy multi-core ignition source of the main combustion chamber, and mixed gas in the main combustion chamber is ignited by multiple large-area flames at the same time. According to the engine combustion device, the combustion speed of the mixed gas is increased, the ignition stability and reliability are improved, and the knockingphenomenon can be effectively restrained.

The invention relates to the technical field of impeller machinery, and provides an axial flow fan blade, a ventilating device and an air conditioner. The axial flow fan blade comprises a hub and a plurality of blades, the two sides of each blade are a pressure surface at an air outlet side and a suction surface at an air inlet side respectively, the radial outward edge part of each blade is a blade top, the blade top of each blade is provided with a first edge and a second edge, the first edge is bent and extends towards the suction surface, and the second edge is bent and extends towards thepressure surface. According to the axial flow fan blade disclosed by the invention, the power capacity of the blades can be improved, the control of the blade top leakage vortex is realized and the fan blade noise is reduced.

The invention relates to an electricity generation and energy storage method and system. The electricity generation and energy storage method includes: electrolyzing water to obtain hydrogen-water mixture gas; and inputting the hydrogen-water mixture gas into an expansion machine module, performing electricity generation through expansion work, and storing residual energy, wherein the expansion machine module comprises at least one expansion machine. The electricity generation and energy storage method adopts multilevel expansion, can improve working capacity of an expansion machine set, improves comprehensive efficiency of the system, and meanwhile can realize high-pressure ratio expansion through the multilevel expansion and fully release pressure energy in air.

The invention discloses an integrated multistage axial flow contrarotating turbine structure which comprises an inner rotor, an outer rotor, a sun gear, an outer gear ring and a planet carrier. The outer rotor is arranged on the periphery of the inner rotor. The inner rotor and the sun gear are arranged coaxially and fixedly connected. The outer rotor and the outer gear ring are coaxial and fixedly connected. The sun gear and the planet carrier are arranged in the outer gear ring. The outer gear ring is engaged with the sun gear through a plurality of planet gears on the planet carrier. By arranging the outer rotor provided with a right rotating blade on the inner rotor provided with a left rotating blade in an opposite installing angle in a sleeving mode, high-temperature working media can be made to push the inner rotor and the outer rotor to rotate when flowing into a turbine, and two strands of power are synthesized to be output through the planet gears. By adoption of the novel integrated multistage axial flow contrarotating turbine structure, the turbine single-stage working capability is enhanced, and the size of the turbine is decreased; and power output structures of the planet gears can be adjusted so as to be matched with the optima speed ratios of all stages of the turbine, and accordingly the turbine circumference efficiency of the turbine is improved.

The invention discloses a bionic blade structure for stirring non-Newtonian fluid, which comprises a working surface of a blade body, a back pressure surface, an outer edge, a smooth joint of a blade tail part, a paddle shaft attached to the blade, a blade working surface raised hemisphere structure and a blade tail end wing structure. The non-smooth hemispherical structure of the working face of the blade can effectively reduce the impact resistance of high-viscosity fluid to the surface of the blade, meanwhile, large vortexes generated by incoming flow are cut and guided into countless small vortexes, liquid is fully stirred and separated, the wing structure at the tail end of the blade can reduce the incoming flow resistance, and the blade is more stable. And the wake flow flowing state is effectively improved and guided. After the bionic stirring blade is repeatedly tested and demonstrated through Fluent software, for example, the stirring liquid is a CMC solution with the concentration of 0.85%, the rotating speed of the stirring paddle is 150 rpm, compared with a smooth blade profile without a bionic structure, the average speed of the stirring fluid is increased by 0.005 m / s, the torque is reduced by 0.02 N.m, the stirring effect is improved, and the novel concept of developing the green and environment-friendly industry is met.

The invention relates to a multi-stage power generation energy storage method and system. The method comprises the steps of electrolyzing water to obtain hydrogen-water mixture gas, inputting the hydrogen-water mixture gas into an expander module, performing expansion work power generation and storing residual energy, specifically, the expander module includes at least one expander. By adopting multi-stage expansion, the working capacity of an expansion unit can be increased, and the comprehensive efficiency of the system is improved; meanwhile, multi-stage expansion can realize high pressureratio expansion and fully release pressure energy in air.

The invention relates to a power generation energy storage method and system. The method comprises the following steps of electrolyzing water to obtain a hydrogen-water mixture gas; inputting the hydrogen-water mixture gas into an expansion machine module, performing expansion acting for power generation, and storing residual energy, wherein the expansion machine module comprises at least one expander. According to the method and the system, multi-stage expansion is adopted, the acting capacity of expansion units can be increased, and the comprehensive efficiency of the system is improved; andmeanwhile, multi-stage expansion can realize high-pressure ratio expansion, and thus pressure energy in air can be fully released.

In order to guarantee that a turbopump stably and reliably works, and improve the working efficiency of the turbopump, the invention provides a spherical turbine shell for a liquid-propellant rocket engine and the turbopump for the liquid-propellant rocket engine. The spherical turbine shell comprises a shell assembly, an inlet pipe, a turbine stator, an inner baffle and a corrugated pipe. The shell assembly comprises a spherical shell, a connecting sleeve and an outlet pipe. The turbine stator comprises an outer ring body, stator blades and an inner ring body. A radial air inlet, an axial exhaust opening and an axial installation opening are formed in the spherical shell. One end of the outlet pipe is set to be of a V-shaped structure, one side of the V-shaped structure is connected withthe axial exhaust opening of the spherical shell, and the other side of the V-shaped structure is connected with the outer ring body of the turbine stator. The connecting sleeve is connected with theaxial installation opening of the spherical shell, and the inlet pipe communicates with the radial air inlet of the spherical shell. The corrugated pipe is arranged in the spherical shell, one end ofthe corrugated pipe is connected with the inner ring body, and the other end of the corrugated pipe is connected with the connecting sleeve. The inner baffle sleeves the corrugated pipe, one end of the inner baffle is connected with the inner ring body, and the other end of the inner baffle is connected with the connecting sleeve.

The invention relates to a compact axial-flow cooling fan for a small-flow motor with a wide chord and high pressure head, which includes a blade, a hub and a casing; The smooth transition between the blade and the small-diameter end is adopted; the blade is a blade with a wide chord and a large turning angle; the casing is a hollow columnar body, and the inner wall is stepped, and the plane formed by the circumferential rotation of the blade is located in the cavity of the large-diameter end; the blade Facing the heating area of ​​the external generator, the airflow enters the heating area through the rotating blades to dissipate heat for the generator. The invention adopts the expanded meridian flow channel, which improves the fan's ability to work on the air flow; the blade adopts the bending and twisting orthogonal design method, and adopts the design means of wide chord, large turning angle and large consistency, which can effectively resist the relatively large reverse flow in the fan flow channel. The pressure gradient can avoid the separation of the boundary layer on the blade surface and improve the cooling effect of the fan. The stepped casing improves the heat dissipation efficiency of the fan and saves processing costs.

The invention relates to the field of liquid-propellant rocket engine turbine pumps, and provides a high-temperature gas outlet end connecting structure of a low-temperature turbine pump. The high-temperature gas outlet end connecting structure comprises a high-temperature gas outlet pipe and a low-temperature shell, wherein the low-temperature shell is mounted on a rotating shaft through a turbine end bearing, a turbine rotor is fixed on the rotating shaft, the high-temperature gas outlet pipe comprises an outlet flange, a transition section, a small end, a gas collecting pipe and a large end, a flow guiding support plate is arranged in the circumferential direction of the inner surface of the gas collecting pipe, the outlet flange, the transition section, the small end, the flow guidingsupport plate, the gas collecting pipe and the big end are integrally formed, and are made of high-temperature alloy materials, the large end and the small end are arranged on the two opposite sides of the gas collecting pipe, and the high-temperature gas outlet pipe and the low-temperature shell are connected through nuts and bolts. An internal profile of the high-temperature gas outlet pipe is subjected to three-dimensional optimization, the high-temperature gas outlet pipe is guaranteed to be smooth in circulation and extremely small in loss, and the working capacity and efficiency of the turbine pump are improved.

The invention discloses a multilevel radial flow type counterrotating turbine structure. The multilevel radial flow type counterrotating turbine structure comprises a main impeller, an auxiliary impeller, a planet carrier, an outer gear ring and a sun gear, wherein a plurality of rows of main impeller blades distributed in the radial direction are arranged on the inner side of the main impeller; a plurality of rows of auxiliary impeller blades distributed in the radial direction are arranged on the inner side of the auxiliary impeller; the main impeller and the auxiliary impeller are parallel and are oppositely arranged, and rows of the main impeller blades and rows of the auxiliary impeller blades are distributed in a staggered mode in the radial direction; the axial center of the main impeller is fixedly connected with a shaft through a spoke belt, and the shaft passes through the center hole of the auxiliary impeller and is fixedly connected with the sun gear; the main impeller, the shaft and the sun gear are coaxially arranged; the auxiliary impeller and the outer gear ring are coaxial and are fixedly connected; the sun gear and the planet carrier are arranged inside the outer gear ring; the outer gear ring is meshed with the sun gear through a plurality of planetary gears on the planet carrier. By adopting the multilevel radial flow type counterrotating turbine structure, working capacity of a turbine is enhanced, and the size of the turbine is reduced; the power output structure of the planetary gears can be adjusted, so that wheel efficiency of the turbine is improved.

The invention provides an air inlet manifold and an automobile engine comprising the air inlet manifold. The air inlet manifold comprises a pressure stabilizing cavity and at least two air channels which are communicated with the pressure stabilizing cavity, wherein the pressure stabilizing cavity is provided with an air inlet connected with a throttle valve; the joints of the air channels and the pressure stabilizing cavity have unequal filleted structures by which air is uniformly distributed into each air channel after passing through the air inlet and being subjected to pressure stabilization in the pressure stabilizing cavity. Preferably, at the joints of the air channels and the pressure stabilizing cavity, the fillet of a single air channel vertical to the air inlet direction is greater than a fillet in the air inlet direction; at the joints of the air channels and the pressure-stabilizing cavity, the fillet of a first air channel in the air inlet direction is greater than the fillet of a tail air channel, and the fillet of a middle air channel is smaller than the fillets of the first air channel and the tail air channel. By adopting the structure, the air inlet pressure loss can be reduced effectively, the difference among the pressure loss of each air channel is lowered, the air inflow of each cylinder kept uniform while the air inflow of each cylinder is increased, and the power performance and economical efficiency of the engine are improved and increased.

The invention relates to the field of thermal power generation and discloses a double reheat thermodynamic system. The double reheat thermodynamic system comprises a steam turbine, a condenser, a by-pass turbine, a combination drive turbine, a high pressure heater; the steam turbine comprises an ultrahigh pressure cylinder, a high pressure cylinder, a medium pressure cylinder and a low pressure cylinder; an exhaust port of the ultrahigh pressure cylinder is respectively connected with the combination drive turbine and the high pressure heater; an extraction port is arranged on the combinationdrive turbine and the extraction port is connected with the high pressure heater; an exhaust port of the medium pressure cylinder is respectively connected with the low pressure cylinder and the by-pass turbine; and an exhaust port of the by-pass turbine is connected with the condenser. According to the thermodynamic system, the economy of an electric generating set can be greatly improved by thegradient utilization of energy; meanwhile, when the load of the electric generating set changes, it can be guaranteed that the high pressure cylinder, the medium pressure cylinder and the low pressurecylinder all work within a high efficiency working condition range, the station service power consumption rate can be reduced and the overall working performance of double reheat can be improved.

The invention discloses an integrated multistage axial flow contrarotating turbine structure which comprises an inner rotor, an outer rotor, a sun gear, an outer gear ring and a planet carrier. The outer rotor is arranged on the periphery of the inner rotor. The inner rotor and the sun gear are arranged coaxially and fixedly connected. The outer rotor and the outer gear ring are coaxial and fixedly connected. The sun gear and the planet carrier are arranged in the outer gear ring. The outer gear ring is engaged with the sun gear through a plurality of planet gears on the planet carrier. By arranging the outer rotor provided with a right rotating blade on the inner rotor provided with a left rotating blade in an opposite installing angle in a sleeving mode, high-temperature working media can be made to push the inner rotor and the outer rotor to rotate when flowing into a turbine, and two strands of power are synthesized to be output through the planet gears. By adoption of the novel integrated multistage axial flow contrarotating turbine structure, the turbine single-stage working capability is enhanced, and the size of the turbine is decreased; and power output structures of the planet gears can be adjusted so as to be matched with the optima speed ratios of all stages of the turbine, and accordingly the turbine circumference efficiency of the turbine is improved.