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

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 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 water-gas dual working medium energy storage method and system. A heat-insulating device for insulating heat transfer is arranged inside a gas-liquid coexistence chamber, and the gas and liquid inlets of the gas-liquid coexistence chamber are respectively connected with the gas buffer chamber and the water storage chamber The tank connection is used for energy storage; the liquid outlet of the gas-liquid coexistence tank is connected to the water storage tank for energy release; the gas outlet of the gas-liquid coexistence tank is divided into two paths through the gas-liquid separator, one is connected to the inlet of the gas buffer tank, and the other is connected to the inlet of the gas buffer tank. One way is connected to the reservoir for gas-liquid separation and gas recycling. The invention fundamentally solves the defect that the energy storage container of the existing energy storage system is insufficient in working capacity due to the decrease of gas temperature during the energy release process, and solves the problem of insufficient gas storage of the energy storage container, and at the same time, the system can be flexibly adjusted of functional ability.

The invention provides an air duct structure and an air conditioner and relates to the technical field of air conditioners. The air duct structure comprises an air duct section and an anti-surge structure. The anti-surge structure is provided with a first inflection point. The air duct section is connected with the anti-surge structure to form a second inflection point. An anti-surge groove is formed between the first inflection point and the second inflection point. The air duct structure can inhibit the anti-surge phenomenon well.

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.

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.