43 results about "Pressure level" patented technology

A system for evacuating and sealing containers filled with product, for example, food product, includes an enclosed, sealed housing wherein the pressure level and the atmospheric content can be controlled. A vacuum shroud is positioned in registry with a container entrance opening in the housing, the shroud connectible to a vacuum source and to a source of replaceable gas to replace the ambient air to be removed from the container. The shroud is advanceable to seal the container entrance opening and is retractable from the container entrance opening. A container transport system inserts the container through the housing entrance opening and into the shroud. Thereupon, a sealing system seals the housing from the ambient after the container has been inserted into the shroud. After the air in the container has been replaced with an inert gas and then the shroud retracted, a closure subsystem applies a cover to the evacuated container. Thereafter, an out feed subsystem removes the closed container from the housing while maintaining the atmospheric content and pressure level within the housing.

This application discloses a method for optimizing the hub profile of an axial flow fan blade. The method includes: real-time acquisition of fan operating conditions to obtain the current fan speed and outlet back pressure, forming an operating condition vector; inputting the operating condition vector into a pre-trained adaptive prediction model, which outputs the optimal hub profile parameter vector corresponding to the current operating condition; the optimal hub profile parameter vector is set as a dynamic variable related to the operating condition vector, and the optimal hub profile parameter is pre-obtained based on a multi-objective comprehensive performance evaluation function with blade passing frequency sound pressure level and fan aerodynamic efficiency as optimization objectives, through adaptive optimization under different operating conditions; and dynamically adjusting the hub profile of the physical axial flow fan according to the optimal hub profile parameter. Thus, real-time adaptive adjustment of the axial flow fan hub profile to operating conditions is achieved.

The invention relates to a device and a method for foaming building materials with CO₂ 2 for the production of a building component and / or building insulation. The device comprises a conveying device (2) and, downstream, a construction material line (3) in which one or more injection nozzles (4) are arranged to inject liquid CO into the stream of construction material. 2 to inject. The pressure level in the building material line (3) is maintained such that the injected CO₂ 2 remains in its liquid state. The building material as well as the CO 2 downstream they enter a mixing device (9) and then at least one or more decompression pumps (11), which ensure controlled decompression of building material and liquid CO₂ 2without significant cooling and segregation. Downstream, a dispensing device (19) is arranged, which is configured to dispense the material for the production of a component and / or building insulation. Depending on the addition of CO 2 This allows the layers within a component to be modified with respect to their density and thus their properties in terms of load-bearing capacity, heat transfer, and mass. If the amount of CQ is kept constant during the process, 2 injected, which the building material in gaseous CO 2 The material that can be absorbed in the suspension forms a building material foam, for example, in the form of building insulation. The invention further comprises a corresponding method for manufacturing components using such a method.

An electric drive system (30) with temperature preconditioning of the operating fluid, comprising an electric machine with rotor (2) and stator (1) and winding heads (21) axially terminal on the stator (1), as well as a gearbox (24) and a hydraulic arrangement for supplying the components of the drive system with the operating fluid with at least one electric pump (4), wherein the winding heads (21) are each surrounded in an annular manner by a housing (22) which is designed as a winding head tank (23) for receiving the operating fluid, characterized in that the pump (4) fills the winding head tanks (23) with a first pressure level and supplies the components of the electric drive system (30) with operating fluid with a second pressure level.

This invention relates to the field of motor rotor copper busbar processing technology, and discloses a control method and system for a wound-rotor rotor bar forming machine. The method includes: setting parameters such as the straight length of the bar, bending angle, initial end length, and rotor center position; adjusting the straight spacing, end position, and R-block size of the clamping plates; determining the pressure level and selecting a target pressure value; applying reverse balancing oil pressure through a pressure reducing valve to adjust part of the tensile force; controlling the clamping plates to clamp the bar, and then driving the first and second swing arms to rotate; collecting the angle values ​​of the first and second swing arms; when the angle value reaches the bending angle, controlling the power source to stop, and the first and second top-arc components cooperate to bend the bar into a motor rotor bar; after bending, driving the first and second swing arms to move outward and removing the bar. This application improves the equipment adjustment efficiency and bending angle accuracy.

A device and related aspects for providing negative pressure to a wound site are disclosed. The device includes: a negative pressure source configured to provide negative pressure to the wound site from an inlet of the negative pressure source via a first fluid flow path; and an electronically controllable valve configured to release negative pressure from the wound site via a second fluid flow path. The device also includes: a pressure sensor configured to measure a pressure level in the second fluid flow path; and a control circuit system operatively connected to the negative pressure source, the electronically controllable valve, and the pressure sensor. The control circuit system is configured to open the electronically controllable valve and, in response to a pressure change rate exceeding a pressure change rate value, output a signal indicating blockage in the second fluid flow path. The control circuit system is further configured to close the electronically controllable valve and activate the negative pressure source in response to a pressure change rate below a pressure change rate value, and to output a signal indicating blockage in the first fluid flow path in response to a pressure level measured by the pressure sensor not responding to changes in negative pressure generated by the activity of the negative pressure source.

The utility model relates to the technical field of graphite methanol vaporizer, especially to a new round block hole formula graphite methanol vaporizer sealing structure, its can effectively solve the problem of multiple sealing points and gasket corrosion failure, can better satisfy the use requirement under various temperature and various sealing conditions, guarantees pressure level and sealing effect, is convenient for detection and reduces the leakage risk, including steel cylinder, cylinder flange, lower cover plate, graphite seal head, stud bolt, nut, heat exchange block and sealing assembly, the cylinder flange is installed to steel cylinder end part, and the lower cover plate and cylinder flange are connected through a plurality of stud bolts and nuts between, the graphite seal head is installed to cylinder flange inboard in steel cylinder interior, and the graphite seal head outside is connected with the lower cover plate contact through the sealing assembly.

The application provides a tunneling teaching machine hydraulic system, and belongs to the technical field of hydraulic systems. The tunneling teaching machine hydraulic system comprises a pushing module, a conveying module, a supporting module, an articulated module, an overbreak cutter module and a system power pump station for providing oil sources for the five modules. The application integrates all functions of actual tunneling, can complete testing of domestic control systems, can realize testing of the tunneling machine hydraulic system before being mounted, can complete preliminary testing of certain special working conditions, and can shorten the development cycle. Since it is simulation testing, each module does not need to be set to the actual size, and the layout of each module also does not need to be set to the actual layout, and can be as small as possible, which not only can meet the simulation of the working conditions of the actual tunneling hydraulic system, but also can greatly save the cost, improve the testing efficiency and reduce the time consumption. Meanwhile, by merging the power oil sources, the modules with similar pressure levels are integrated together, which can save the energy consumption and improve the energy utilization rate.

The application discloses a kind of special low permeability sandy conglomerate reservoir well bottom flow pressure level keeping prediction method, including the statistical special low permeability sandy conglomerate body oil reservoir core sample's permeability and pressure sensitivity relationship data;Calculate the ratio of the permeability of rock sample under each level net confining pressure condition and the permeability tested under initial net confining pressure condition;Draw the relationship curve of net confining pressure value and permeability change rate;Predict the permeability loss ratio of reservoir near the bottom of production well with the increase of production pressure difference;Calculate production pressure difference, compare permeability classification data, calculate the permeability reduction ratio in the range of salt well bottom and the influence on fluid production rate.The application is mainly aimed at the production characteristics of the production well of special low permeability sandy conglomerate reservoir, explains the internal cause of its change, and provides development theoretical basis;It has guiding significance for the initial development mode, method and production pressure control of special low permeability sandy conglomerate reservoir.

This invention discloses a closed-loop pressure-controlled tea kneading device and a precise pressure application method, relating to the field of tea processing machinery. The device includes a frame, kneading discs, a kneading drum, a pressure cap, and a pressure application mechanism. The frame features an integrated rigid support cantilever, which is equipped with the pressure application mechanism, a dual-sided pressure detection mechanism, a servo drive mechanism, and a controller, forming a closed-loop pressure control system. The pressure application mechanism uses a gear steering box in conjunction with a helical pressure rod to achieve coaxial pressure application. The pressure detection mechanism collects pressure signals through dual-sided sensors, and utilizes pre-compression springs for buffering and vibration reduction. The pressure application method achieves constant pressure kneading through preset pressure levels, real-time pressure acquisition, closed-loop dynamic fine-tuning, and automatic reset. This invention solves the problems of inaccurate pressure control and unstable pressure application in traditional equipment. It provides precise pressure detection and uniform, stable pressure application, adaptable to different tea processing methods, reduces tea breakage, and improves kneading quality and processing efficiency.

This invention relates to a method for cryogenic separation of air using an air separation apparatus (100-400) with a distillation column system (10), the distillation column system having a pressure column (11) operating at a pressure level of 9 bar to 14.5 bar, a low-pressure column (12) operating at a pressure level of 2 bar to 5 bar, and an argon column (13). According to the invention, a second top gas or a portion thereof is used to form a circulating flow, the top gas or circulating flow being heated, compressed, recooled, and fed, either partially or completely, or proportionally, into the first distillation column (11) and / or the second distillation column (12) after partial or complete liquefaction or in a non-liquefied state. The subject matter of the invention also relates to a corresponding apparatus (100-400).

Systems and methods for controlling braking at a trailer in a tractor-trailer vehicle configuration based on forward looking imaging sensor data are disclosed. In one form, a system comprises a processor configured to receive instructions to initiate braking of a vehicle and a trailer; receive information from a sensor comprising data regarding a forward-looking view from the vehicle; and receive vehicle performance information. The processor is further configured to determine a predicted path of the vehicle and trailer based on the information from the sensor; determine autonomous braking controls for the vehicle and the trailer based on the predicted path; and transmit the autonomous braking controls to the trailer that are configured to adjust a braking pressure level and a braking duration at the trailer as the vehicle and trailer travel through at least a portion of the predicted path.

This invention relates to a pilot valve, comprising a valve body, a valve cover, a pilot valve seat, a mechanical iris mechanism, an adjusting assembly, and a sealing assembly. The mechanical iris mechanism includes a grooved wheel, a slide rail, a flat key, a rotating shaft, an opening screw, a pilot valve cone core, and two sets of sliders. The adjusting assembly includes an adjusting nut, an adjusting rod, a first-position spring, and a second-position spring. In the first position, the pre-compression of the first-position spring is adjusted by the adjusting nut in the adjusting assembly, thereby setting the set pressure. In the second position, after the pilot valve resets, rotating the opening screw causes the rotating shaft to rotate, causing the two sets of sliders to extend outwards. The extended parts of the sliders abut against the lower end of the second-position spring in the adjusting assembly. At this time, the set pressure is determined by the pre-compression of the first and second-position springs, realizing multi-position pressure setting of the pilot valve. This invention applies a mechanical iris mechanism to the pilot valve structure, effectively expanding the set pressure range of the pilot valve, allowing the pilot valve to be applied to hydraulic systems of different pressure levels.

This utility model belongs to the technical field of downhole tools for oil drilling and production, and specifically relates to a blowout preventer (BOP) setting and well washing device for live operations. To address the technical problem that existing BOP setting and well washing devices cannot achieve high-volume well washing, this utility model discloses a BOP setting and well washing device for live operations, including a cylinder, a check valve assembly, an upper connector, and a pressure ball seat fixed to the upper connector by a shear pin. The pressure ball seat is located above the check valve assembly, and there is a space between them to accommodate the pressure ball seat after the shear pin is sheared. By setting the pressure level of the shear pin, this utility model enables the BOP setting and well washing device for live operations to achieve both BOP prevention and packer setting functions, as well as high-volume, high-efficiency well washing functions.

The application provides a softness and hardness adjusting device (100) with body pressure detection function, which is installed on a seating area (210) of a vehicle seat (200). The softness and hardness adjusting device (100) with body pressure detection function comprises an adjusting air bag (110), an air pressure detection member (120), an air source (130) and a control device (140). The adjusting air bag (110) is provided with a containing cavity (111) for carrying a passenger on the seating area (210). A flexible resilient object (160) and an initial amount of gas are arranged in the containing cavity (111). The flexible resilient object (160) is used for supporting the inner wall of the containing cavity (111) to contain the gas, and the initial amount of gas is used for passenger body pressure detection. The detection end of the air pressure detection member (120) is used for detecting the air pressure in the containing cavity (111). The gas supply port of the air source (130) is connected with the containing cavity (111) through a connecting pipeline, and is used for adjusting the total gas amount in the containing cavity (111) to adjust the softness and hardness of the seating area (210). The control device (140) determines the body pressure level of the passenger according to the detected air pressure in the containing cavity (111).

This invention discloses a vehicle gas system and its control method, belonging to the field of vehicle gas optimization technology. The vehicle gas system provided by this invention has an intake pre-processor connected to a compressor. The compressor outlet is divided into four paths via a first distribution valve group: the first path connects to a second distribution valve group via a high-pressure storage tank group; the second path connects directly to the second distribution valve group; the third path connects to a medium-pressure storage tank group and the third distribution valve group via a first pressure-reducing valve group; and the fourth path connects to a low-pressure storage tank group and the fourth distribution valve group via a second pressure-reducing valve group. The second, third, and fourth distribution valve groups are respectively connected to the high-pressure, medium-pressure, and low-pressure gas systems, and each distribution valve group is connected to the compressor via a return valve. The outlet of each gas system is connected back to the intake pre-processor. A controller electrically connects to each control component, intelligently coordinating the gas flow direction. This enables flexible distribution of compressed gas across multiple pressure levels and residual gas recovery, reducing frequent compressor start-stop cycles and lowering energy consumption.

This invention relates to the field of energy-saving technology for construction machinery, and discloses an energy recovery and reuse device for a hydraulic system of construction machinery. The device includes: an energy recovery interface for connecting to the regeneration oil port of the main hydraulic system to form a regeneration circuit; a composite energy storage module for receiving hydraulic energy of different pressure levels from the regeneration circuit and storing and releasing the energy in an optimal manner; an intelligent electro-hydraulic control valve group for controlling the on / off state, flow direction, and flow rate of the recovery and release oil circuits; and an intelligent energy management controller for predicting changes in the overall machine load in real time, dynamically coordinating energy recovery, storage, and release to achieve optimal overall energy efficiency of the hydraulic system. This invention upgrades the recovery of energy from in-situ utilization to global scheduling through multi-source energy recovery and prediction-based intelligent dynamic allocation, enabling precise release at the moment when auxiliary power is most needed, maximizing energy utilization; and significantly reducing fuel consumption.

The utility model is suitable for aluminum profile processing technical field discloses a kind of aluminum profile leveling device, and installation base top both sides are vertically fixed and are equipped with installation frame, and the bottom of each installation frame inside is fixed and is equipped with mounting plate, and the top of each installation frame inside is slidably installed with lifting plate, and every two groups of mounting plate and lifting plate outside are rotatably installed with pressure roller between, and the top of each installation frame both sides is vertically fixed and is equipped with support frame.The utility model technical scheme is under the meshing transmission effect of first drive sprocket, second drive sprocket, first drive chain and second drive chain, so that operator can provide two sides two groups of lifting plate synchronous driving force when hand push rotating rod, so that two groups of lifting plate can be connected with the synchronous vertical movement of its side pressure roller, reduce the operation step required for operator to adjust the vertical distance of pressure roller, and then improve the pressure leveling efficiency of aluminum profile.

The application provides a kind of detection method and device for high-temperature compression resistance of asbestic-free composite material sealing gasket.The detection method is executed using the detection device, and the detection method comprises the following steps: preheating the pressing plate assembly;obtain the system elastic deformation of the device under different pressure loads as background compensation data;load the sealing gasket to be tested, when the initial contact pressure is monitored by the pressure sensor, mark the reading of the displacement sensor as zero or initial thickness;apply a step-by-step increasing pressure load to the sealing gasket to be tested, and hold pressure at each pressure level;monitor the pressure value fed back by the pressure sensor in real time;when the sealing gasket to be tested creeps and causes the pressure value to drop, the control driving part automatically executes the feeding action to compensate for the pressure loss until the pressure value returns to the target set value;real-time collection of total displacement data detected by the displacement sensor, and calculation of the actual thickness change of the sealing gasket to be tested during the stress process based on the background compensation data.

Method for controlling a fixation device (14) for fixing a human or animal eye (12) for treatment with a treatment device (10) by means of negative pressure, wherein after activation of the fixation device (14) a negative pressure is built up to a predetermined fixation negative pressure value, wherein a negative pressure build-up rate up to the fixation negative pressure value is limited by a pressure build-up algorithm below a predetermined rate value, wherein the rate value is based on a physiology of the eye (12), wherein the fixation negative pressure value is built up stepwise by the pressure build-up algorithm, wherein at each negative pressure level the negative pressure is kept constant for a predetermined waiting time.

The application provides a hydrogen refueling station hydrogen charging and discharging optimization method and system based on an optimization algorithm, and relates to the technical field of hydrogen refueling station optimization processing. The method comprises the following steps: obtaining hydrogen refueling station basic parameters; calculating the hydrogen charging mass and charging utilization rate of the hydrogen storage tank corresponding to each individual according to the hydrogen storage tank basic parameters; calculating the compression power consumption of the compressor according to the compressor basic parameters; calculating the cooling power consumption of the cooling system according to the cooling system basic parameters; inputting the cooling power consumption of the cooling system, the compression power consumption of the compressor and the hydrogen charging mass and charging utilization rate of the hydrogen storage tank into a hydrogen refueling station profit objective function to obtain the hydrogen refueling station profit corresponding to each individual; based on the hydrogen refueling station profit corresponding to each individual, iteratively optimizing the residual pressure and volume of the hydrogen storage tank, and obtaining the hydrogen storage tank optimization result when the iteration number is reached, wherein the hydrogen storage tank optimization result is used to determine the optimal pressure level value and optimal volume value of the hydrogen storage tank.

Disclosed herein are plasma sources, exhaust gas treatment units, and methods for detecting coolant leaks. A plasma source includes an RF generation system coupled with a cooling system. The RF generation system includes one or more electrical components including a hollow RF antenna for generating a plasma. The cooling system includes a coolant passage extending through the plasma source, including through the electrical components of the RF generation system; a first flow control device coupled to the coolant passage to control inflow of coolant into the coolant passage and electrically isolated from the hollow antenna; a second flow control device coupled to the coolant passage to control outflow of coolant from the coolant passage; and a pressure measurement device coupled with the coolant passage to measure a pressure level of the coolant. The coolant passage includes the hollow RF antenna.

This invention relates to the field of long-term settlement monitoring technology for power plant dams, specifically to a settlement monitoring system and method based on long-term safety early warning for power plant dams. It includes a storage tank, a static pressure level, an venting mechanism, a liquid volume detection mechanism, and a controller. The storage tank and the static pressure level are connected. The liquid volume detection mechanism continuously detects changes in the weight of the storage tank. The controller is electrically connected to the detection unit, the execution unit, the liquid volume detection mechanism, and the static pressure level. The controller determines the presence of air bubbles inside the static pressure level based on signals from the detection unit and controls the execution unit to expel the bubbles when they are present. Before and after the execution unit's action, the controller collects the detection results from the liquid volume detection mechanism and the pressure signal from the static pressure level, respectively, and corrects for pressure drift by comparison. This eliminates pressure drift caused by changes in liquid volume, thereby maintaining high accuracy and high reliability under long-term unattended conditions.

The application discloses a high-cost multi-parameter coupling welding cross-domain parameter adaptive method and system based on reinforcement learning. In order to solve the problems of high cost and long cycle of parameter optimization welding in the pressure cabin, the initial parameter mapping from normal pressure to high pressure is established by collecting land (normal pressure) and high-pressure dry multi-modal data, and then the high-pressure welding process is modeled as MDP, safety reinforcement learning and multi-modal quality prediction are introduced, and online adaptive parameter adjustment is carried out under the constraint of rolling prediction control (MPC), and the high-pressure recommended process parameters and their confidence interval are output. The reward function takes surface forming and molten pool morphology as the core, and considers the action cost, supports the generalization application of multi-material, multi-bevel and multi-cabin pressure level. Compared with the prior art, the application significantly reduces the number of cabin welding and consumables, and makes the high-pressure weld comprehensive performance close to the land level, with high stability and traceability.

This invention relates to the field of temperature-controlled electronic valve technology and discloses an intelligent AI temperature-controlled electronic valve with multi-condition adaptive adjustment. The valve includes a valve body, a sleeve fixedly connected to the inner wall of the valve body, a valve core slidably connected to the inner wall of the sleeve, a valve hole on the side wall of the valve core, a drive cylinder fixedly connected to the upper end of the valve body, and a firing rod fixedly connected to the upper end of the valve core. The side wall of the firing rod is rotatably and permeably connected to the side walls of the valve body and the sleeve. Two rectangular rods are fixedly connected to the top of the drive cylinder, and a sliding plate is slidably connected to the side walls of the two rectangular rods. This invention collects multi-dimensional data of temperature, pressure, and flow rate through a sensor array, and combines this with the condition recognition algorithm built into the AI ​​control chip. It can automatically identify multiple operating conditions such as different fluid media, different pressure levels, different temperature ranges, and dynamic load changes, without manual intervention, automatically adapting and adjusting parameters to achieve seamless switching of operating conditions.

A method for steam cracking using a steam cracking apparatus (2100-2800) comprising an electric cracking furnace (10) without a convection section (12) and further comprising a quench cooling train (20) is presented, wherein a process gas stream is at least passed through the electric cracking furnace (10) and the quench cooling train (20). The operation of the quench cooling train (20) comprises at least two different cooling steps arranged in any order. In a first step at least a part of the process gas stream withdrawn from the electric cracking furnace (10) is cooled by boiler feed water vaporization at an absolute pressure level between 30 bar and 175 bar. In a second cooling step at least a part of the process gas stream withdrawn from the electric cracking furnace (10) is cooled by a superheated mixture of feed hydrocarbons used to form the process gas stream and process steam, thereby heating the process gas stream to a temperature level between 350 °C and 750 °C. A corresponding apparatus (2100-2800) is also part of the invention.

A method for performing a massage program carried out by a massage system that is part of a vehicle seat system that includes a vehicle seat with a backrest and a seat part, and a pneumatically operated massage system with N massage bladders. The method involves selecting and starting a massage program to define a sequence of bladders which are inflated or deflated, wherein the sequence is defined such that successively inflated bladders are adjacent to one another, wherein the bladders are inflated and deflated according to the sequence so that the bladders are inflated one after the other to a first pressure level. If the nth bladder in the sequence is inflated to the first pressure level, the pressure level of at least the (n+1)th bladder and / or the (n−1)th bladder in the sequence is at a pressure level lower than the first pressure level but greater than zero.

The present invention relates to a heat exchanger (10) including a heat exchange tube bundle (30) having a first region (32) configured to allow heat exchange between a refrigerant at a first pressure level and a refrigerant at a second pressure level, the first pressure level being referred to as high pressure and the second pressure level being referred to as intermediate pressure and below high pressure, the tube bundle (30) having a second region (34) configured to allow heat exchange between a high-pressure refrigerant and a refrigerant at a third pressure level, the third pressure level being referred to as low pressure and below intermediate pressure, the heat exchanger (10) being configured to allow high-pressure refrigerant to flow through the tube bundle (30) through the first region (32) and the second region (34).

Processes for incorporating phase change materials (PCM) into porous construction elements, composite construction elements produced thereby, and structures constructed therefrom. Such a process includes heating a PCM to a temperature at or above a melting temperature thereof to liquify the PCM and yield a liquid PCM, fully immersing a porous construction element in the liquid PCM, and infiltrating the liquid PCM into porosity of the construction element while the construction element and liquid PCM are at a subatmospheric pressure level and at a temperature sufficient to maintain the PCM in a liquid state to yield a composite construction element in which the porosity of the construction element has been at least partially filled with the PCM. Such a composite construction element is preferably capable of increasing the thermal inertia of a building envelope constructed therefrom with little or no detrimental effects on properties of the construction elements.