10 results about "High-pressure area" patented technology

The invention discloses a water turbine local turbulence field prediction method, and relates to the technical field of water turbines. The method comprises the following steps: S1, data acquisition and preprocessing; s2, sparse measurement point feature extraction; s3, low-dimensional representation of the turbulent flow field; s4, carrying out double-model joint training; and S5, performing real-time prediction. According to the method, the global turbulent flow field prediction can be realized only by using the pressure / speed time sequence data of a small number of sparse measuring points in the water turbine runner, and an expensive full flow field experiment table does not need to be built or a dense sensor array does not need to be deployed. Compared with the traditional experimental measurement (the equipment cost is more than ten million yuan), the total investment of the sensor and the computing equipment is only ten thousand yuan, and the cost is reduced by more than 99%; meanwhile, the installation difficulty of the sensor in a high-flow-speed and high-pressure area is avoided, the existing monitoring point layout of a hydropower station can be directly adapted, the technology landing feasibility is remarkably improved, and the model architecture does not depend on a specific water turbine type and can be adapted to different types such as a mixed-flow type and an axial-flow type by adjusting grid parameters and training data.

This application belongs to the field of switch technology, specifically an arc-extinguishing chamber and a circuit breaker or disconnecting switch. The upper part of the arc-extinguishing chamber is divided into multiple independent spaces by a partition structure, which together with the lower arc-extinguishing chamber, forms multiple arc-extinguishing chambers connected in series. Each space has a pressure relief channel connected to the outside. After the circuit breaker or disconnecting switch ignites, the arc moves independently within each partition, preventing the gas in the high-pressure area of ​​the strong magnetic blow-out region from flowing to the low-pressure area of ​​the weak magnetic blow-out region. This effectively promotes the entry of gas into the grid plates (such as the last few grid plates on the moving contact side) in areas with weaker magnetic blow-out force, thereby improving the arc-extinguishing performance of the arc-extinguishing chamber grid plates.

The utility model discloses a carriage and a vehicle, the carriage comprises a carriage body, the carriage body comprises a top plate, a front plate and a rear plate, the front plate and the rear plate are connected with two ends of the top plate, and the rear plate is lower than the top plate; at least part of the end, connected with the rear plate, of the top plate obliquely extends towards the rear plate. Therefore, the compartment is arranged on the vehicle, and at least part of the end, connected with the rear plate, of the compartment top plate obliquely extends towards the rear plate, namely the inclination angle is arranged at the rear end of the top plate, so that distribution of airflow at the rear end of the compartment in the vehicle running process can be optimized, the airflow is more stable, and the position of an airflow intersection at the rear end of the compartment is changed; and airflow separation and vortex formation are reduced, so that formation of a local high-pressure area is reduced, wind resistance is reduced, energy consumption in the vehicle running process is reduced, and the vehicle running stability is improved.

A system for transferring a substrate from a high pressure area to a low pressure area is provided. The system includes a load lock chamber that includes: a chamber body disposed around an interior volume; a first substrate support; a first exhaust inlet; and a first baffle positioned between the first substrate support and the first exhaust inlet. The system further includes a first exhaust line fluidly coupled to the interior volume through the first exhaust inlet.

The CO2 fluid non-woven fabric entanglement system based on gradient pressure regulation and targeted phase change comprises an entanglement cavity and a nozzle, wherein the entanglement cavity comprises a high-pressure area, a phase change trigger cavity and a pressure regulation cavity which are sequentially distributed from top to bottom; in the high-pressure area, the phase change triggering cavity is communicated with the pressure adjusting cavity; the high-pressure area is located between the bottom of the nozzle and the upper supporting plate. A fiber web channel allowing a fiber web to pass through is arranged between the bottom of the nozzle and the upper surface of the upper supporting plate, and when the fiber web passes through the fiber web channel, fluid jet flow sprayed by the nozzle entangles the fiber web. The phase change trigger cavity is located between the upper supporting plate and the first bottom plate. The pressure adjusting cavity is located below the first bottom plate. The pressure of the high-pressure area is P1, the pressure of the phase change trigger cavity is P2, and the pressure of the entanglement cavity is P3. P1gt; p2gt, P2gt; p3 and P2 are lower than the saturated vapor pressure of the supercritical CO2 fluid at the current process temperature. Therefore, on the premise that energy consumption is not remarkably improved, advanced phase change of jet flow can be effectively avoided.

The utility model relates to water tank technical field especially relates to an expansion type water tank. Its technical scheme includes the box, the water inlet of being located at the top of box, the water outlet of being located at the bottom of box, still includes the fixed installation in the telescopic expansion box of box, installs the constant pressure module of expansion constant pressure to the expansion box of both sides of box, the constant pressure module includes the transmission case and pressure chamber that intercommunication, the pressure chamber and transmission case fill liquid, the transmission case in sliding installation has with expansion fixed connection of sealing plate of box. The utility model adopts constant pressure module and can provide stable unchangeable system pressure, compares with nonlinear air bag, avoids pressure fluctuation, makes system pressure keep constant on the set operating point, no matter how much expansion water volume is, avoids the risk that air bag pressure sharply climbs in high pressure area, also eliminates the hidden danger that low pressure area buffer is insufficient, improves system pressure stability greatly, can realize effective volume utilization more.

The utility model provides an anti-turbulence protective casing for centrifugal fan relates to centrifugal fan protective casing technical field, including mounting rack and set up the impeller of mounting rack inner cavity, the diversion subassembly includes mounting rack top mounting protective casing, the inner cavity of protective casing is provided with grating, the bottom of protective casing inner cavity is provided with first diversion trench, and the first diversion trench is equipped with second diversion trench. The top of the inner cavity of the protective shell is fixedly connected with a first flow guide plate, air flow can be sucked and discharged through an impeller installed in the inner cavity of the installation frame, the air flow near the impeller can be preliminarily divided through a grid arranged in the inner cavity of the protective shell, and meanwhile the air flow is guided to an inner cavity of a first flow guide groove; through the first flow guide plate installed at the bottom of the inner cavity of the protective shell, the air flow can be separated, and then the situation that the air flow collides when entering the low-pressure area from the high-pressure area, and consequently turbulent flow is caused can be avoided.

A system for transferring a substrate from a high pressure area to a low pressure area is provided. The system includes a load lock chamber that includes: a chamber body disposed around an interior volume; a first substrate support; a first exhaust inlet; and a first baffle positioned between the first substrate support and the first exhaust inlet. The system further includes a first exhaust line fluidly coupled to the interior volume through the first exhaust inlet.

The utility model discloses a kind of ceiling horizontal air disc, it includes: air disc body, for and ceiling connection;Fresh air port, integrated in the side portion of air disc body, and there is the air volume regulating valve for being connected on fresh air port and being used for adjusting air volume;Condenser, arranged in the positive pressure area inside air disc body, positive pressure area characterizes the relatively high pressure area formed after airflow is pressurized by fan;Access hole, set in the bottom of air disc body, air disc body is pivotally connected with the access plate for covering access hole at access hole place can open and close;And deflector, it is located in the airflow passage in air disc body, the surface of deflector is provided with multiple through holes, the distribution density of through hole changes along airflow direction in gradient. The utility model can effectively improve the problem that the practical effect of current air disc is poor.

The utility model discloses a kind of impeller water inlet runner, including impeller main body and the main blade being set in the middle part runner in impeller main body, the middle part of the impeller main body is fixed with the shaft core for with external rotating shaft connection, one end of the main blade is fixedly connected with the outer wall of shaft core, the rim of the one side of the main blade is provided with integrally-formed water guide blade, the rim of the water guide blade is provided with integrally-formed first arc-shaped edge;The utility model is by setting first arc-shaped edge in the rim of water guide blade, and setting second arc-shaped edge at the connecting portion of ring wall and shell, the runner of the water inlet of impeller is increased fillet, so that connecting portion thickens, structure is more stable, when liquid enters impeller, it can more smoothly flow through runner, the design of arc-shaped edge can reduce the probability of bubble generated due to liquid flow obstruction, thereby reduce the number of bubble being brought into high pressure area, reduce the erosion degree of cavitation to impeller.