112 results about "Variable pressure" patented technology

The invention relates to the technical field of fluid machinery intelligent control, and discloses a centrifugal circulating pump non-differential pressure sensor variable pressure control method based on edge intelligence. Water pump rotating speed and power signals are collected, subjected to normalization processing and then input to a lightweight recurrent neural network (RNN) model deployed at an edge device end; the RNN model serves as a soft sensor, and the flow and the lift value of the most unfavorable point of the pipe network are deduced in real time; and the system dynamically calculates the target lift based on a pipe network characteristic curve according to the reasoned flow, the target lift serves as a set value and forms a closed-loop control loop with the actual lift fed back by the RNN, the rotating speed adjustment amount is output to the frequency converter through a PID algorithm, and finally accurate variable pressure control without the physical differential pressure sensor is achieved. According to the method, the dependence on a tail end physical sensor is eliminated, the cost and the complexity are reduced, meanwhile, the real-time control and the data security of ultra-low delay are realized by utilizing edge calculation, and the response speed, the control precision and the energy-saving effect of the system are effectively improved.

A variable pressure controlled injection method, a semi-finished injection product, and a co-injection product manufacturing method are provided. The variable pressure controlled injection method includes providing an injection molding system, injecting a first foaming material, and performing a foaming step. The injection molding system includes a first variable pressure mold and a second variable pressure mold. In the foaming step, the first variable pressure mold and the second variable pressure mold apply a first pressure and a second pressure to the first foaming material respectively, and then the first foaming material is heated to form a semi-finished injection product. The semi-finished injection product includes a microporous layer and a solidified layer. The co-injection product manufacturing method includes injecting a second foaming material onto the semi-finished injection product and heating under a stable internal pressure to complete foam and obtain a co-injection product.

The application discloses a pressure curve combined air separation variable pressure intelligent adsorption blowdown method, system and device, relates to the intelligent blowdown technical field.The pressure curve combined air separation variable pressure intelligent adsorption blowdown method, system and device, comprising the following steps: S1, real-time acquisition operation state data, and pretreatment is carried out to operation state data;S2, operation state data is analyzed to pressure disturbance intensity;S3, through real-time analysis and feature extraction to pressure curve;S4, operation state data is predicted to start-stop risk;S5, comprehensive operation state data, pressure disturbance intensity analysis result and start-stop risk prediction result execute blowdown control instruction.The air compressor and variable pressure adsorption system lack linkage control based on pressure change, blowdown is easy to cause pressure fluctuation and frequent start-stop, which leads to energy consumption increase and equipment wear, and the existing control mode lacks feedforward regulation mechanism.

A device for stimulating a human erogenous zone includes a housing; a drive device; a pressure chamber at least partially surrounded by a chamber wall; a chamber wall portion, the drive device to cause the chamber wall portion to repeatedly move between different wall positions to cause a volume of the pressure chamber to vary to cause pressure in the pressure chamber to modulate between positive pressures and negative pressures relative to an ambient pressure; a housing opening, the positive pressures and the negative pressures to be output via the housing opening; and a seal to seal the pressure chamber with respect to an ambient environment, the drive device including a coil through which an electrical current is to flow, the drive device disposed in a magnetic field and coupled to the chamber wall portion to transmit the drive movement to cause the chamber wall portion to move.

The invention relates to the technical field of engineering machinery, in particular to an electric control proportional steering brake valve based on hydraulic transmission and a control method, an electric proportional pressure reducing valve is adopted to replace a traditional hydraulic control pilot handle, and the electric proportional pressure reducing valve outputs pilot pressure oil with variable pressure according to an operation instruction to push an active valve element A and an active valve element B to act; the active valve core A pushes the brake valve core to act, and power pressure oil is communicated with the brake to realize braking; the driving valve element B pushes the steering valve element to act, and main power pressure oil is communicated with a steering clutch to achieve steering. Pilot pressure output to a steering and braking unit is accurately controlled through an electric signal, and linear proportional adjustment of pressure and current is achieved. Through the design of double-spring pressure regulation and oil way separation, not only is the fine adjustment smoothness in the low-pressure stage ensured, but also the pressure is quickly increased at a key threshold value to prevent the clutch from slipping, and meanwhile, the damage of high temperature and impurities of a main oil way to a precise control element is effectively isolated, so that the control precision, response stability and reliability of a system are remarkably improved.

The invention discloses a variable pressure thermal state calibration wind tunnel control system and a control method. The system comprises a variable pressure control module which is used for realizing dynamic cooperative adjustment of total pressure and back pressure of a test section; the electric heating series combustion heating module is in airflow communication with the variable pressure control module and is used for heating the test airflow in stages; the control platform is in communication connection with the variable pressure control module and the electric heating series combustion heating module and is used for realizing integrated control of the system; the health management and safety interlocking module is connected with the control platform and used for monitoring the operation state of the system and executing safety interlocking; and the visual monitoring module is used for carrying out visual monitoring on the test process. High-precision dynamic cooperative adjustment of total pressure and back pressure, wide-temperature-range uniform heating of series connection of electric heating and combustion heating and multi-system deep integration and intelligent cooperative control are achieved, and the reliability, safety and long-time continuous operation capacity of the system are remarkably improved.

The utility model provides a winding device for a transformer winder, and relates to the technical field of transformer windings, the winding device comprises a bottom plate, a support frame and a fixing frame, the top of the support frame is provided with a rotary winding mechanism, the rotary winding mechanism is provided with a transformer winding, and the top of the fixing frame is provided with a guide wheel through a guide mechanism; the guide wheel is connected with the output end of the second air cylinder into a whole through the telescopic rod and the connecting arm, the output end of the second air cylinder can drive the guide wheel to horizontally move in a reciprocating mode so as to adjust the distance between the guide wheel and the transformer winding, the guide wheel can be attached to the outer side of the transformer winding, and the telescopic rod and the spring are both in a compressed state. The transformer winding is generally of a square structure and can extrude the guide wheel to do telescopic motion in the rotating process, the guide wheel is driven to reset through the telescopic rod by means of elastic force generated by the spring, the guide wheel is attached to the outer side of the transformer winding all the time, and copper foil is wound more tightly.

This invention discloses a variable pressure airtight chamber and testing method for testing the three properties of doors and windows. The chamber includes a main body and a testing chamber within it. A testing opening communicating with the testing chamber is located on at least one side of the main body. A door / window mounting portion for engaging with the outer periphery of a door or window is located at the testing opening. The mounting portion includes an inflatable airbag for engaging with the outer periphery of the door or window. The invention also includes an airbag inflation / deflation mechanism for driving the inflatable airbag to inflate outwards. By providing an inflatable airbag for engaging with the outer periphery of the door or window in the mounting portion, this invention achieves a tight seal between the door / window and the mounting portion when the airbag inflates, preventing air leakage from affecting testing accuracy. This also makes door / window installation and disassembly more convenient and improves testing efficiency.

To provide a variable pressure control injection method and a method for manufacturing an injection semi-finished product and a co-injection member.SOLUTION: A variable pressure control injection method, comprising: providing an injection molding system comprising a first variable pressure mold and a second variable pressure mold; injecting a first foam material; and performing a foaming process, wherein the first variable pressure mold and the second variable pressure mold respectively apply a first pressure and a second pressure to the first foam material to heat and foam as an injection semi-finished product, and the first pressure is a variable pressure. The semi-finished injection product thus obtained has a microporous layer and a solidified layer, and can be further subjected to a molding process with a second foaming material and heated to complete foaming under a stable internal pressure to obtain a co-injection part.SELECTED DRAWING: Figure 1

The application relates to the field of engineering machinery, in particular to a control method for engineering machinery, a processor, engineering machinery and a storage medium. The engineering machinery comprises an operating device, an input piston, a pressure piston, a pressure oil source, an electromagnetic reversing valve, a variable pressure reducing valve and a hydraulic oil source, a pressure cavity is formed between the input piston and the pressure piston, an oil inlet of the electromagnetic reversing valve is connected with the pressure oil source, and the first end and the second end of the variable pressure reducing valve are respectively connected with the electromagnetic reversing valve and the pressure cavity. The method comprises the following steps: in the case that the operating mode of the engineering machinery is a first mode, the electromagnetic reversing valve is controlled to be opened, so that the hydraulic oil of the pressure oil source flows through the variable pressure reducing valve and is introduced into the pressure cavity; the target operating force of the operating device is acquired; the valve opening degree of the variable pressure reducing valve is adjusted, so that the oil pressure of the hydraulic oil flowing through the variable pressure reducing valve and being introduced into the pressure cavity is adjusted, and the operating force of the operating device is the target operating force. The operating force of the operating device is adjusted, so that the operating device meets different operating conditions.

The invention discloses a battery cover plate with a lever type supporting structure. The battery cover plate comprises a cover plate body, a through hole formed in the cover plate body, a mounting groove formed in the through hole and used for mounting a pole body, and an extension wall extending outwards along the groove wall of the mounting groove; the extending wall is folded outwards to form a folding part; the pole body comprises a first pole body and a second pole body which are arranged in a stepped manner, and an inverted buckle groove is formed in the stepped surface of the second pole body; the plastic body comprises a first injection molding part and a second injection molding part; the position of the upper surface of the first injection molding part is lower than the groove bottom surface of the inverted buckle groove, or the position of the upper surface of the first injection molding part is lower than the step surface and higher than the groove bottom surface of the inverted buckle groove; the second injection molding part is formed by injection molding along the extending wall and the folding part; the battery cover plate provided by the invention solves the problems that the existing battery cover plate is not enough in riveting size precision due to the fact that the injection molding pressure is difficult to control and the tooth grooves are fully injected, and the battery cover plate cannot be effectively sealed in a variable pressure state in the subsequent use process and is insufficient in reliability and stability.

This invention relates to the field of intelligent spraying equipment, specifically to an AI-assisted wood grain paint spraying device, comprising a robotic arm (12). The robotic arm's input end is communicatively connected to an AI-assisted system output end, which in turn is communicatively connected to a variable pressure air supply module input end. A nozzle assembly is fixedly connected to the bottom of the spraying component. The nozzle assembly includes a housing with an internal cavity. A first spring is fixedly connected to the inner wall of the cavity, and a compression block is fixedly connected to the other end of the first spring. The compression block can extend through the cavity into the housing. A rotating groove is formed on the inner wall of the cavity, and a transmission ring slides within the groove. Several toothed combs are hinged to the inner side wall of the transmission ring, and several comb holes are formed on the inner wall of the housing. This invention drives the internal mechanical structure of the nozzle to move, causing the nozzle cross-sectional shape to change in real time with the airflow strength, thus spraying a texture with randomness and irregularity.

This invention relates to a variable-pressure self-clamping and self-releasing GXJ rubber waterstop joint and its application method. The joint includes an elliptical hollow rubber body, a clamping assembly, a movable clamping component, a mud-proof assembly, and a rotatable clamping assembly. The elliptical hollow rubber body has a cavity. The clamping assembly achieves primary self-clamping through an elastic element; the movable clamping component moves downwards when the rubber body expands, achieving primary self-releasing. The mud-proof assembly guides mud through a rubber strip and prevents it from entering the clamp groove. The rotatable clamping assembly achieves secondary self-clamping and self-releasing through magnetic attraction or repulsion. This invention solves the problems of high construction difficulty, unstable fixing, high probability of detachment, difficulty in separating from the joint assembly, and easy deformation by the reinforcing cage in GXJ rubber waterstop joints. It also prevents mud from seeping into the groove and damaging the bonding effect of the GXJ rubber waterstop, improving the sealing and waterproofing performance of the joint at the diaphragm wall, and ensuring construction quality and water-stopping effect.

A continuous variable pressure device and method for high-speed flutter test belong to the technical field of continuous wind tunnel test, and aim to solve the problem that the traditional test equipment cannot change the Mach number while changing the continuous variable pressure. The device comprises an upper flexible wall group and a lower flexible wall group. The upper flexible wall group comprises a flexible wall plate and a plurality of servo action units. One end of the servo action units is connected with the upper end wall of a nozzle body. The servo action units are arranged at intervals along the airflow direction. The other end of the servo action units is connected with the flexible wall plate. The servo action units are respectively electrically connected with a servo controller group. A nozzle controller is connected with the servo controller group through a real-time bus. The left and right ends of the flexible wall plate are respectively and correspondingly slidably and sealingly matched with the left side wall and the right side wall of the nozzle body. The upper flexible wall group and the lower flexible wall group are the same in structure and are symmetrical. The flexible wall plate is used to adjust the Mach number, so that the problem that the traditional test equipment cannot change the Mach number while changing the continuous variable pressure can be solved.

Method for operating a roller press (1) for compacting or briquetting material, wherein the roller press (1) has two counter-rotating press rollers (2) between which a roller gap (W) is formed and at least one of the roller surfaces is provided with a profile, wherein the material (M) in the roller gap (W) between the roller surfaces is pressed into a briquette (3) or into briquettes or a briquette strand, wherein the rollers (2) are preferably cooled during operation, characterized in that that during operation at least one characteristic parameter is continuously determined which depends on the formation of deposits (7) of the material (M) on the profiled roller surface or on the profiled roller surfaces and that one or more operating parameters of the press are changed depending on at least one determined characteristic value in order to reduce caking (7), that the operating parameter(s) are changed by means of a control system in such a way that a deviation of a determined actual value (I) of the characteristic parameter(s) from a target value (S) of the characteristic parameter(s) is minimized, where the press (1) is operated with a variable pressure (P) as an operating parameter and the pressure (P) is changed by a control system depending on the determined characteristic value. and / or the press (1) with variable cooling and / or variable temperature (T) and / or variable feed temperature (T) A ) is operated as an operating parameter and the cooling and / or the temperature (T) and / or the input temperature (T) A) is changed by a control system depending on the determined parameter and / or the press (1) is operated with a variable feed of the input material, namely with a variable quantity flow or mass flow of the supplied input material as an operating parameter, and the supplied quantity of material or the quantity flow or mass flow (m) of the supplied input material is changed by a control system depending on the determined characteristic value and / or the press (1) is operated with a variable rotational speed as an operating parameter and the rotational speed is changed by a control system depending on the determined characteristic value, and whereby A vibration value is determined as a characteristic value by a measurement using a vibration sensor (8). or A fluctuation value is used as a characteristic value, which is determined from fluctuations of a machine parameter, wherein the fluctuation value is determined from fluctuations in the gap width of the roller gap or from fluctuations in the contact pressure of one or both press rollers or from fluctuations in the motor current or motor torque of one or both drives of the press rollers.

This application relates to the field of precision casting equipment technology, and discloses a silica sol precision valve casting device, including a shell-making chamber and a main shaft disposed inside the shell-making chamber for holding a wax model. An eccentric variable acceleration drive mechanism, connected to the main shaft, is disposed outside the shell-making chamber to drive the main shaft to rotate and periodically generate sudden changes in angular acceleration. The main shaft has a coaxial torsional impact vibration excitation mechanism inside, triggered by sudden changes in angular acceleration, which generates circumferential tangential impact vibration inside the main shaft. The eccentric variable acceleration drive mechanism is coaxially linked to the drive end of a follow-up pulse air pump mechanism, and the air outlet end of the follow-up pulse air pump mechanism is connected to the central gating channel of the wax model. By setting up a closed-loop variable pressure bottom injection system with a pressure-resistant chamber and a bottom lifting piston, the device can smoothly push silica sol slurry from bottom to top in a high vacuum environment using static pressure difference, ensuring the density and defect-free rate of the inner surface of the precision valve shell.

The invention relates to the technical field of energy accumulators, in particular to a pressure conversion hydraulic mechanism energy accumulator which comprises a supporting cylinder and an air bag installed in the supporting cylinder, and an oil inlet valve is installed on the supporting cylinder; a plurality of anti-friction pieces for reducing friction are mounted on the air bag; an oil inlet assembly capable of conveying hydraulic oil is installed on the supporting cylinder. By arranging the anti-friction piece with the balls on the periphery of the air bag and combining the anti-tearing reinforcing structure at the lower end of the air bag, contact between the air bag and the supporting cylinder is changed from surface contact sliding friction to multi-point rolling supporting, and the abrasion and tearing risks of the air bag are remarkably reduced; by means of a variable pressure supporting mechanism formed by the oil inlet assembly, the blocking piece, the connecting piece and the supporting piece, when the air bag moves towards the oil inlet valve, flexible blocking can be achieved, gas buffering and jacking supporting force can be synchronously established, hard contact and excessive deformation of the air bag and the oil inlet valve are avoided, and therefore the working safety of the energy accumulator is improved, and the service life of the energy accumulator is prolonged.

The application relates to the field of shear valves, and discloses a control method of a shear valve, which comprises the following steps: collecting the ambient temperature in real time through a temperature sensor arranged near the valve body of the shear valve; collecting the fluid pressure in real time through a pressure sensor arranged at the inlet of a flow channel; dividing the rotor swing angle into multiple intervals, each interval corresponding to a basic control function; calculating a compensation coefficient based on the temperature difference between the current temperature and a preset temperature, the pressure difference between the current fluid pressure and a preset pressure, and a preset empirical coefficient; in the rotor swing process, matching the corresponding interval based on the current angle; obtaining the basic control function of the corresponding interval; adjusting the obtained basic control function of the corresponding interval according to the compensation coefficient to generate an actual control function; and outputting a control signal to drive an actuating mechanism based on the actual control function. Through the above technical scheme, the control precision of the shear valve under the working conditions of a wide temperature range and variable pressure is improved.

This invention relates to the field of material injection molding technology, specifically to a high-strength hemp fiber composite material and its injection molding process. This invention overcomes the problems of low interfacial weld strength and poor formability in existing fiber composite materials. The injection molding process of this invention first involves extruding and granulating a fiber mixture, treated carbon fibers, resin, and crosslinking agent under low-temperature control to obtain the composite material. Then, pre-impregnated carbon cloth is positioned within the mold cavity. During the injection molding stage, variable pressure wavefront control is implemented. The first stage uses low-speed injection to smoothly compact the high-viscosity melt into continuous carbon cloth. The second stage involves high-speed mold filling, utilizing high shear heat to precisely trigger the unsealing and ring-opening of the latent crosslinking agent, forming a three-dimensional covalent bond network. Finally, a stepped high-pressure holding process eliminates reactive micropores. This process solves the molding defects of natural fiber carbonization due to heat and the easy erosion of carbon cloth inserts, improving the interlayer bonding strength and mechanical strength of the injection-molded parts, and is suitable for the manufacture of large lightweight automotive structural components.

The invention discloses a pressure transformation system of a solar water heater, and aims to provide the pressure transformation system of the solar water heater, which can improve the water pressure stability through a transfer storage tank. The device comprises a storage tank which is provided with a storage cavity, and the upper end of the storage tank is provided with a water inlet pipe; the combined tank is installed at the lower end of the storage tank, an outflow cavity is formed in the combined tank, the communicating cavity is communicated with the outflow cavity, and a water outlet pipe is installed at the lower end of the combined tank; the pressurizing assembly is mounted at the upper end of the storage tank and communicates with the storage cavity; one end of the drainage tube is mounted in the outflow cavity, and the other end of the drainage tube is communicated with the water inlet tube; the sealing assembly is mounted on the water outlet pipe; and the controller is mounted on the storage tank. The device has the beneficial effects that the water pressure stability is improved through the transfer storage tank, the pressure in the storage cavity can be improved, the water inlet stability is improved, and the flow speed in the water outlet pipe can be detected.

The utility model discloses an automatic pressure regulating valve for sewage treatment, which relates to the technical field of sewage treatment and comprises a water pipe, a regulating plate inserted in the water pipe in a penetrating manner, obliquely arranged upwards along the water flow direction and capable of sliding along the oblique direction, an impact plate vertically fixed on the upstream face of the regulating plate, and a pressure regulating valve arranged on the upstream face of the impact plate, the length direction of the impact plate is perpendicular to the water flow direction, one end of the spring is fixed to the downstream face of the impact plate, and the spring is used for extruding the impact plate towards the water pipe in the length direction of the adjusting plate. By arranging the adjusting plate obliquely arranged in the water flow direction and the impact plate fixed to the upstream face of the adjusting plate and combining the elastic force effect of the spring, the function that the size of a water flow channel can be automatically adjusted along with water pressure changes without external control is achieved, the self-adaptive capacity of the sewage treatment system under the variable-pressure working condition is improved, and the service life of the sewage treatment system is prolonged. And the problem of equipment impact or insufficient flow caused by sudden change of water pressure is avoided.

The invention discloses a supercritical variable-pressure operation coal-fired boiler which comprises a boiler body unit, a boiler wall, a supporting ring plate arranged on the boiler wall and a plurality of burner air boxes arranged on the boiler wall. The evaporation unit comprises a top plate arranged on the furnace wall, an evaporation pipe assembly arranged on the lower end face of the top plate and a bottom plate arranged at the bottom end of the evaporation pipe assembly. The limiting unit comprises a first limiting plate arranged on the evaporation pipe assembly, a hinge arranged on the first limiting plate, a second limiting plate arranged on the hinge, a locking assembly arranged on the second limiting plate, a clamping assembly arranged on the first limiting plate and the second limiting plate, and a limiting block arranged on the first limiting plate. According to the supercritical variable-pressure operation coal-fired boiler, the evaporation pipe assembly integrally penetrates through a large heat absorption area and a small heat absorption area in the boiler wall, so that heat absorption is uniform; the inclination angle of the evaporation pipe assembly is accurately controlled through the arranged limiting unit, and angle deviation of the evaporation pipe assembly under long-time high-temperature operation is avoided.

Damping device (10), in particular for damping pressure pulsations in a brake circuit of a slip-controlled vehicle braking system, comprising: a pressure medium reservoir (14) with variable pressure medium volume and a throttling device (16) that restricts the outflow of pressure medium from the pressure medium reservoir (14), with a base body (20) forming a throttle cross-section (22), a closing element (24) controlling the throttle cross-section (22) depending on the prevailing pressure conditions and with a restoring element (28) clamped between a first support (30a) on the base body (20) and a second support (30b) on the closing element (24) and acting on the closing element (24) with a restoring force in the direction of the throttle cross-section (22), characterized in that that, at least in the non-flowing state of the throttle device (16), the return element (28) is supported on the base body (20) and / or on the closing element (24) at an angle of inclination (36) to a longitudinal axis L of the throttle device (16) that deviates from 90°, that the restoring element (28) acts on the closing element (24) with a resulting total force, which is composed of an axial force component and a radial force component, wherein the closing element (24) performs a tilting movement due to the effective radial force component when lifting off from the throttle cross-section (22).

A method of depositing a material and a system for depositing a material are disclosed. An exemplary method includes dosing a precursor and / or reactant to a substrate while changing a pressure within a reaction chamber.

The application relates to the technical field of battery assembly testing, and discloses a battery stack pressurizing positioning device and a battery stack pressurizing positioning method. The device comprises a pressure supply unit and an equalizing unit. The equalizing unit comprises a base, a plurality of through holes are arranged on the pressurizing end face of the base, pistons are filled in the holes, and the pistons are arranged to be capable of moving in the holes and sealing the through holes. The pressure supply unit comprises an upper cavity and a lower cavity in communication with the upper cavity, the base is detachably fixed in the lower cavity, and the upper and lower cavities and the equalizing unit jointly form a closed gas chamber. The upper cavity is connected with a gas pump through an inlet and outlet pipeline, and the gas pump is arranged to be capable of exhausting or charging the gas chamber to control the position of the pistons in the through holes. The device can uniformly apply pressure and realize variable pressure adjustment, simultaneously clamps and positions the battery stack, can guarantee the position stability and uniform stress of the battery stack during temperature rising and falling and testing, is suitable for various forms of battery stacks and battery stack combinations, and is simple to operate and high in flexibility.

The invention relates to a hydrogen internal combustion engine control method based on a variable pressure hydrogen rail and a hydrogen injection system, and the method comprises the steps: carrying out a calibration experiment on a hydrogen internal combustion engine, and determining optimal excess air coefficients under different working conditions, and hydrogen injection amount change ranges and hydrogen injection pressures corresponding to different excess air coefficient ranges; when the hydrogen internal combustion engine operates, the current optimal excess air coefficient is determined based on the calibration result according to the current internal combustion engine rotating speed and the load requirement, and the hydrogen injection pressure is determined according to the current optimal excess air coefficient; preliminarily controlling the valve opening of the pressure regulating valve according to the required hydrogen spraying pressure; the pressure at an inlet of the hydrogen rail is measured, and the valve opening degree of the pressure regulating valve is further regulated based on the relative relation between the current hydrogen rail pressure and the needed hydrogen spraying pressure; and according to the hydrogen spraying pressure and the optimal excess air coefficient, the hydrogen spraying pulse width of the hydrogen sprayer is controlled. Compared with the prior art, the dynamic property and economical efficiency of the hydrogen internal combustion engine can be improved, and the situation that the combustion condition becomes poor due to the fact that the hydrogen injection pulse width is too large and delayed to the air cylinder combustion stage is prevented.

The present invention discloses a dioxolame rectification variable pressure control system, and relates to the technical field of dioxolame rectification, the dioxolame rectification variable pressure control system comprises: a pretreatment unit for performing light component removal treatment on a crude dioxolame raw material; the variable-pressure rectification unit is connected with the output end of the pretreatment unit and is used for receiving the light-component-removed material and dehydrating and purifying the light-component-removed material; the variable pressure rectification unit comprises a first rectification tower and a second rectification tower which are different in operation pressure, the tower top steam output end of the first rectification tower is connected to the feeding end of the second rectification tower after being condensed and decompressed, and the tower top output end of the second rectification tower is connected to the feeding end of the first rectification tower to form circulation; through a pressure swing distillation core process, the limitation of dioxolame-water azeotrope is successfully broken through, and the problem that a high-purity product cannot be obtained through traditional distillation is fundamentally solved.

The present invention provides a variable pressure injection molding process, an injection-molded semi-finished product, and a method for producing a co-injection-molded product. The variable pressure injection molding process comprises an injection molding system, the injection of a first foam material, and the execution of a foaming step. The injection molding system includes a first variable pressure mold and a second variable pressure mold. In the foaming step, the first variable pressure mold and the second variable pressure mold exert a first pressure and a second pressure, respectively, on the first foam material, and then the first foam material is heated to form an injection-molded semi-finished product. The injection-molded semi-finished product has a microporous layer and a solidified layer.The process for producing a co-injection molded product involves injecting a second foam material onto the injection molded semi-finished product and heating at a stable internal pressure to complete the foam and obtain a co-injection molded product.

A System and Method for Adaptive Paper Web Winding that adjusts Operational Parameters, including torque, pressure, tension, acceleration, Jerk Rate, and sheet speed, in response to Operational Data and feedback. The system, in one embodiment, comprises a Front Drum with adjustable torque control, a Rider Roll with variable pressure regulation, an Unwind Section with tension control, and a Control Unit configured to maximize coupling between drive rolls and driven built paper roll. The method involves detecting the Coefficient of Friction of a Paper Web, then adjusting Operational Parameters in response to Operational Data and feedback. This invention improves efficiency and reliability in paper winding operations by automating adjustments to accommodate variations in the Coefficient of Friction of a Paper Web.