15 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.

The invention discloses a high-viscosity material experimental molding and rheological parameter measurement method considering both a supergravity environment and a constant gravity environment. Comprising the following steps: firstly, placing a high-viscosity material in a closed space provided with a sonar sensor, and enabling the closed space to be in a constant-gravity or supergravity environment; pressurizing the closed space to a preset high air pressure for a period of time, then releasing the pressure to a preset low air pressure for a period of time, repeating pressurizing and pressure releasing for preset times, and collecting the volumetric strain of the high-viscosity material at any preset high air pressure or preset low air pressure through a sonar sensor in the repeating process; and after the operation is repeated for preset times, bubbles in the high-viscosity material reach the preset discharge efficiency, and in-situ leveling and molding of the high-viscosity material are completed. The device and the method have the beneficial effects that the material bubbles of the high-viscosity material are efficiently discharged and the rheological parameters of the high-viscosity material are measured in a constant-gravity and supergravity experimental environment.

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.

The invention discloses an ion transmission device, which realizes optimization of air pressure difference and ion transmission through the design of a differential radio frequency multipole and realizes connection of a low-vacuum inflation radio frequency multipole and a high-vacuum electrostatic lens group, and the permeability of the differential radio frequency multipole can effectively improve the transmission efficiency of ions compared with the permeability of an existing pore structure. The loss of ions in the transmission process is reduced; the sealing area achieves large difference of air pressure, a section of pipeline is formed through radial sealing, large pipe resistance is achieved, and therefore the large difference of the air pressure is achieved. The radio frequency voltage amplitude is reduced in an equal-proportion square manner, so that the edge radio frequency electric field is remarkably reduced, the reheating phenomenon of ions in the transmission process is avoided, the low-energy state of the ions after cooling is favorably kept, and the mass spectrometry precision is improved; the shielding area effectively shields the electric field of the electrostatic lens, and the ions are prevented from being accelerated in a high-pressure area, so that the randomness of ion kinetic energy is reduced, and the resolution and sensitivity of mass spectrometry are 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 present application relates to waste gas absorption equipment technical field, especially to prevent harmful gas device that escapes, including pump machine, communicating pipe and waste gas control system etc.;Pump machine is communicated with communicating pipe through connecting pipe.;The two ends of communicating pipe are connected with at least one waste gas control system, and the two waste gas control systems in the same horizontal position from the top to the downward view work oppositely. The present application avoids the problem that the harmful gas overflowed from the warehouse door cannot be effectively and quickly absorbed by the prior art, causing the harmful gas in the warehouse to overflow and affecting the surrounding environment. Through the setting of the air deflector, the concentration of the high pressure area is reduced, and the escape amount is lower. And the problem that after the collision of the two oblique airflows, the external environment is still affected by the overflowed gas mass is avoided.

The invention discloses a rapid calculation method for the closing process of a steam isolation valve under an accident condition, and belongs to the technical field of nuclear power valve structure design. The method comprises the following steps: acquiring working condition parameters and geometric parameters under an accident working condition, and initializing grids and field variables; dynamically adjusting the time step length, updating the boundary space node, judging whether the throat node of the steam isolation valve reaches the blocking flow or not, calculating the local resistance loss and updating the pressure; calculating a field variable of the space node at the next moment by adopting a characteristic line method; setting three parameters of a front flashboard concave curved surface, obtaining a curve equation of a boundary line of a high-pressure area and a low-pressure area, and solving fluid resultant force borne by a flashboard assembly through numerical calculation; and adjusting the three parameters according to whether the resultant force meets design requirements until calculation of all time points is completed. The method is applied to the special working condition of steam, resistance reduction and acceleration in the closing process are effectively achieved through three-parameter concave surface flashboard structure optimization, a rapid calculation method without three-dimensional numerical simulation is matched, and large-scale popularization and design of engineering are facilitated.

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 application provides a kind of detection vehicle industrial camera system protection device and method, it is related to road surface disease detection equipment field, to the problem that the protective shell of current vehicle-mounted industrial camera system is difficult to realize self-cleaning and leads to poor shooting accuracy, streamline protective shell based on fluid mechanics is used as the protective structure of industrial camera system, the windward shell and leeward shell of protective shell can move relatively, form dynamic streamline wind guide structure, change the wind angle of windward shell, high pressure area can be formed on the leeward convex surface and the leeward lower convex surface of the leeward shell at different speeds, so as to carry away the pollutants carried by airflow and avoid adhesion, keep the leeward convex surface and the leeward lower convex surface of the leeward shell as the perspective surface of industrial camera system clean, reduce shooting obstruction, to improve image quality.

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.