1478 results about "Pressure stabilization" patented technology

The invention discloses an aircraft wheel cooling method and device, and the method comprises the steps: collecting the temperature of a brake disc and the air pressure of a hub in real time through a temperature and pressure sensor, calculating the temperature change rate and the pressure difference through an embedded processing module, and generating a thermodynamic initial parameter set; calculating a thermal stress distribution value of the brake disc based on the initial parameter set, and generating a cooling liquid flow and spraying angle instruction set in combination with a material threshold database; the opening degree of an annular pipeline piezoelectric valve is regulated according to an instruction set, an injection area is regulated according to flow velocity-surface area heat exchange efficiency, and waste heat is synchronously recovered to optimize power consumption; the thermal infrared imager obtains temperature field distribution, the initial parameter tolerance range is compared, the spraying angle and the flow instruction are corrected through a fuzzy PID algorithm, and temperature gradient errors are eliminated; and based on the temperature drop rate, the pressure stability and the waste heat recovery efficiency, an efficiency index is generated by using a neural network scoring model, and algorithm weights and piezoelectric valve response parameters are dynamically adjusted. The cooling efficiency is effectively improved, and the thermal stress risk is reduced.

The invention relates to the field of wafer processing, and discloses a wafer grinding and polishing adjustment control system based on a tension sensor, which comprises a processing pressure acquisition module for acquiring the gravity of a heavy object, acquiring the tension of an electric cylinder in real time based on the tension sensor, calculating the processing pressure through a formula, and acquiring grinding state parameters of a wafer in real time; the processing pressure stability analysis module comprises a first analysis unit and a second analysis unit; the first analysis unit is used for calculating the accumulated variable quantity of the processing pressure in a preset monitoring period, comparing the accumulated variable quantity with a change threshold value and sending out an alarm signal; the second analysis unit inputs the grinding state parameters into a grinding state model to analyze a grinding state value, and reversely evaluates the state of the grinding disc; the adjusting control module adjusts the pulling force of the electric cylinder based on the first analysis unit and judges whether the grinding disc is replaced based on the second analysis unit. Accurate monitoring and stability control of the machining pressure are achieved, the state of the grinding disc can be effectively evaluated, and the wafer grinding and polishing quality and efficiency are improved.

The invention relates to the technical field of high-pressure gas cylinder control, and discloses a high-pressure gas cylinder valve pressure dynamic monitoring and self-adaptive adjusting method. The method comprises the following steps: dividing a high-pressure gas cylinder valve into a plurality of monitoring units, and obtaining pressure, temperature and flow data of each unit to form a comprehensive monitoring data set; establishing a pressure stability evaluation index and an environmental factor influence evaluation index based on the data set, and generating an initial risk value by applying a probability early warning mechanism and an adaptive prediction model; dynamically correcting the initial risk value and outputting a corrected risk value according to spatial relevance or time sequence dependency of adjacent monitoring units; and finally, the corrected risk values are sorted, a priority control instruction list is generated, and a control execution unit is combined to output a self-adaptive adjustment signal so as to adjust the opening degree of the valve. According to the method, comprehensive monitoring and dynamic adjustment of the high-pressure gas cylinder valve are achieved, and the operation stability of the valve is improved.

The invention provides a small-capacity air bag blood pressure detection system and a precise pressure control method thereof. A micro air pump is communicated with an air inlet of a small-capacity air bag through a pipeline, and a linear proportional valve is arranged on an air release opening of the small-capacity air bag and used for controlling the opening, closing and flow of the air release opening of the small-capacity air bag; the miniature air pump is normally opened and provides stable-flow input air flow for the small-capacity air bag, the valve opening degree of the linear proportional valve is changed by executing a self-adaptive differential constant-pressure control algorithm, then the air release speed of an air release opening of the small-capacity air bag is changed, and pressure adjustment of the small-capacity air bag is achieved by changing the difference between the inflation speed and the deflation speed. According to the invention, rapid pressure stabilization can be realized, and pressure overshoot is hardly generated after the pressure is stabilized; the pressure control precision of 1mmHg at any pressure regulation step length is realized; the problem that the traditional single-parameter closed-loop control cannot meet the precise control of each pressure interval is solved; the production cost is further reduced, and the out-of-hospital scene adaptability and the popularization degree of the equipment are improved.

The invention belongs to the technical field of water supply network adjustment, and particularly relates to a water supply network pressure and flow adjusting method. The method comprises the following steps: firstly, collecting pressure, flow and water temperature data of a monitoring node at present and in a preset time period, wherein the preset time period is set according to a water consumption period; preprocessing flow data through a sliding window method and fitting a curve, and marking an instantaneous disturbance time period; the dynamic response coefficient of each disturbance time period is calculated, and water temperature correction is needed; combining the flow standard score, the dynamic response coefficient and the real-time deviation coefficient to obtain a flow dynamic regulation index; a pressure stability index is obtained through pressure and water temperature trend feature vector matching; the two are subjected to weighted fusion to form a pipe network comprehensive regulation factor, and the valve opening and the water pump power are regulated accordingly. The method can accurately identify instantaneous disturbance, improve the adjustment precision and response speed, and guarantee stable water supply.

The invention discloses a self-adaptive control method and system for a condenser for a nuclear power station, relates to the field of condenser control, and aims to predict a future load change trend in a prospective manner by analyzing historical data of a unit power instruction and steam flow, and calculate feed-forward circulating water flow based on a prediction result. On the basis, a feedback control loop based on actually measured pressure is reserved. More importantly, a self-adaptive bias correction mechanism is introduced, and continuous learning and correction are carried out on output of feedback control, so that steady-state errors of the system are eliminated, and uncertainty of the model is compensated. Finally, feed-forward, feedback and self-adaptive correction components are intelligently fused to form a final control instruction which can quickly respond to load changes and can accurately maintain pressure stability, and the problems of severe pressure fluctuation and energy waste under the dynamic working condition are effectively solved.

The invention provides a full-closed-loop control method and system for a multi-station servo feeding manipulator, and the method comprises the steps: firstly, detecting the thickness of a plate in real time, querying a preset thickness-pressure relation, and determining a target pressure value when the multi-station servo feeding manipulator carries out the grabbing of the plate; a real-time pressure value is then generated through a dynamic pressure regulation mechanism. And the system compares the real-time pressure with the target pressure to obtain a deviation value, dynamically adjusts proportional, integral and differential parameters in combination with a fuzzy rule base, and calculates and generates a dynamic pressure compensation amount by using the adjusted parameters. And the compensation amount and the target pressure are superposed to form a comprehensive control instruction, and the comprehensive control instruction is fed back to the execution mechanism to realize closed-loop adjustment, so that the pressure stability and the position fixation of the plate in the whole grabbing and transferring process are finally kept, and the slippage phenomenon is effectively eliminated. The pressure control precision and the anti-sliding stability in the plate transferring process are improved.

The invention discloses a marine low-pressure carbon dioxide tank pressure control method and system, and relates to the technical field of storage tank pressure control, and the method comprises the steps: obtaining real-time pressure data in a low-pressure carbon dioxide tank, and extracting pressure feature data; analyzing the pressure characteristic data by using a pressure diagnosis algorithm, and identifying key factors influencing the pressure stability in the low-pressure carbon dioxide tank; based on the key factors, a pressure regulation and control model is established, pressure parameters of the low-pressure carbon dioxide tank are adjusted in real time, and a control strategy is optimized. According to the method, key factors are analyzed by using a pressure diagnosis algorithm, so that accurate pressure regulation is realized, the stability of the internal pressure of the storage tank is improved by establishing an optimization model and adjusting pressure parameters in real time, the risk of carbon dioxide state change caused by pressure fluctuation is reduced, and the operation safety of a ship is ensured.

The invention relates to a micro-pressure oxygen cabin self-adaptive pressure control method and system based on iterative optimization, belongs to the technical field of pressure control, and aims at solving the problems that existing micro-pressure oxygen cabin pressure control depends on manual repeated debugging, the efficiency is low, and self-adaptive optimization cannot be achieved. The method comprises the steps that in the pressure stabilizing stage of the micro-pressure oxygen cabin, the pressure in the cabin is monitored in real time, and when the pressure exceeds the upper limit or the lower limit of a preset pressure interval, a pressure stabilizing wave crest section or wave trough section opening degree adjusting algorithm is executed so as to adjust the opening degree of an electric exhaust valve. And after the single oxygen therapy process is finished, executing an iterative optimization step: automatically analyzing the pressure data of the current pressure stabilization stage by the system, and iteratively updating the control parameters for the next oxygen therapy process according to the pressure data. According to the method, self-learning and evolution of control parameters are realized through a closed-loop mechanism of real-time adjustment and redisk optimization, the parameters can be quickly converged to the optimal state within multiple times of operation, the debugging period is shortened, and the stability of pressure control is improved.

The invention discloses an intelligent energy-saving control method for an air compression system based on data driving. The intelligent energy-saving control method is suitable for an industrial air compression station with multiple parallel units. According to the method, operating parameters of all air compressors and pressure and flow data of a header pipe are collected in real time, an energy efficiency model of the output flow and the gas-electricity ratio of all frequency converters is established, and the future flow requirement of the header pipe is dynamically predicted in combination with the characteristics of a fixed frequency machine. Based on a prediction result and a single-machine energy efficiency model, the basic load and the fluctuation load are distributed according to the overall energy efficiency optimization principle of the system, the start-stop sequence and the rotating speed of each unit are determined, and stable main pipe pressure, continuous gas supply, rapid response and good operation flexibility are achieved. By means of the method, the energy efficiency difference of all the units can be fully utilized, energy consumption fluctuation and equipment abrasion caused by frequent starting and stopping are reduced, and the overall energy utilization rate of the air compression system and the reliability of the industrial production process are improved.

The utility model relates to a small-sized low-temperature gas purification and pressure control device which comprises a particulate matter filter, a pressure buffer tank, a pressure controller, a purifier and a parallel gas conveying pipeline, the parallel gas conveying pipeline is divided into a gas inlet channel, a flow dividing channel, a purifying channel, a connecting channel, a refrigerating channel and a gas outlet channel through valve assemblies. According to the utility model, unnecessary parts are omitted, and only the particulate matter filter, the pressure buffer tank, the pressure controller, the purifier and the parallel gas conveying pipeline are reserved, so that the volume of the equipment is effectively reduced while the gas purity and the pressure stability are ensured, and the whole structure is more compact; and three different lines are arranged to carry out pipeline purging, gas leakage detection and gas conveying work respectively, so that normal operation of the refrigerating machine is guaranteed, the service life of a product is greatly prolonged, and the reliability of the product is greatly improved.

The invention relates to the technical field of automatic control, in particular to a low-temperature control system of a centrifugal variable-frequency magnetic suspension water chilling unit, which comprises an environment heat parameter detection module, a condensation pressure deviation identification module, a condensate water flow rate regulation and control module, a refrigerant flow evaporation linkage module and an energy consumption curve dynamic construction module. According to the method, the inlet and outlet water temperature of the condenser and the external air temperature are collected, and synchronous filing and water temperature difference rate normalization processing are combined, so that when the external temperature changes drastically, the abnormal trend of water temperature change lag can be captured in time, and the condensation instability risk is pre-judged in advance; based on local pressure change rate gradient density analysis, abnormal fluctuation of condensation pressure is precisely discriminated, the problem that the local instability risk is covered by a global mean value is avoided, and the early warning timeliness is improved; the flow speed of condensate water is dynamically adjusted according to condensation instability characteristics, PID dynamic correction is conducted by extracting the rotating speed and flow speed error of a water pump, it is ensured that the heat exchange performance of a condenser continuously meets the low-temperature change requirement, and the condensation pressure stability is remarkably improved.

The utility model discloses an anti-blocking type side slope grouting drill bit, which belongs to the technical field of side slope protection and comprises a grouting pipe and a grouting drilling tool, the grouting drilling tool is mounted at the bottom end of the grouting pipe in a threaded manner, and inner cavities of the grouting drilling tool and the grouting pipe are provided with grouting channels; the grouting drilling tool is composed of a drilling pipe and a drill bit, the top end of the drilling pipe is in threaded connection with the grouting pipe, and the bottom end of the drilling pipe is in threaded connection with the drill bit. A sealing structure is fixedly installed in an inner cavity of the drill pipe, an adjusting structure is slidably installed at the bottom end of the drill bit, a driving disc is driven through an electric rod in the sealing structure, a sealing block is driven by a transmission folding frame to unfold or contract along a moving groove, self-adaptive adjustment is achieved in cooperation with a piston pipe and an air injection pipe, and the sealing structure can be tightly attached to the inner walls of grouting holes with different diameters; effective plugging is formed, the risk that grout flows back to the outside of the drill hole along the drill hole due to untight sealing is effectively reduced, the reinforcing effect of grouting is enhanced, a slope rock-soil body is fully reinforced, and the stable grouting pressure and the reinforcing effect are guaranteed to a certain extent.

The invention relates to the technical field of medical instruments, and provides a control method, system and device of a pneumoperitoneum machine and the pneumoperitoneum machine. The control method of the pneumoperitoneum machine comprises the following steps that monitoring pressure read by the pneumoperitoneum machine is obtained; when the monitoring pressure is larger than a first pressure threshold value and the maintaining duration is larger than or equal to a first preset duration, the pressure change rate within the first preset duration is obtained; if the pressure change rate is larger than a first pressure change rate threshold value, expected fluctuation is judged, and a first adjusting program is started; and if the pressure change rate is smaller than or equal to the first pressure change rate threshold value, continuous change is judged, and a second adjustment program is started. The reasons of overpressure are distinguished more meticulously according to the pressure change rate, so that different adjusting programs are adopted, the overpressure condition of expected fluctuation can be adjusted in a targeted mode, and the problems that the loss of equipment parts is high, and the time consumed by equipment pressure stabilization is long are solved.

The invention discloses a liquid pumping assembly of a hydraulic slurry pump and the hydraulic slurry pump adopting the liquid pumping assembly. The liquid pumping assembly of the hydraulic slurry pump comprises a left oil cylinder, a square box with a box cover, a cylinder sleeve, a pump head, a liquid outlet assembly and a right oil cylinder which are sequentially connected from left to right. The right end of the first power output shaft is connected with a piston capable of transversely moving in the cylinder sleeve through a movable connecting piece located in the square box. A top oil cylinder is vertically arranged at the top end of the pump head, a second power output shaft partially located in an inner cavity of the pump head is vertically arranged at the top of the top oil cylinder, and a first sealing valve is arranged at the bottom end of the second power output shaft. A pump head liquid outlet is formed in the right end of the pump head, a right oil cylinder is transversely arranged at the right end of the liquid outlet assembly, a third power output shaft partially located in an inner cavity of the liquid outlet assembly is transversely arranged in the right oil cylinder, and a second sealing valve is arranged at the left end of the third power output shaft; the liquid outlet assembly is provided with a liquid drainage hole communicated with an inner cavity of the liquid outlet assembly. The invention has the characteristics of stable and accurate flow and pressure and high stability.

The invention relates to the technical field of underground water prevention and control, in particular to a tunnel two-step grouting plugging method for wide crack water gushing, which comprises the following steps of: constructing a grouting hole intersected with a wide crack or a concentrated water gushing channel according to a geological survey result; first rapid plugging slurry is injected into the crack through the grouting hole, and the first rapid plugging slurry can form a temporary water stopping barrier in the flowing water environment; the water outlet amount change and the grouting pressure change of the adjacent observation holes are monitored, and when the water outlet amount is remarkably reduced and / or the grouting pressure stably rises and forms a platform, it is judged that the temporary water stop barrier is formed; and second reinforcing grout is injected into the crack through the grouting holes, and after the second reinforcing grout is solidified, a permanent reinforcing body with mechanical strength is formed. By optimizing the grouting material and the process time sequence, effective combination of rapid plugging and long-term reinforcement is achieved, the grouting reliability is improved, and the engineering cost is reduced.

The invention discloses grinding and polishing equipment for the inner wall of a pipe workpiece. The grinding and polishing equipment comprises a rack, a workpiece rotating and supporting mechanism, a grinding mechanism, a radial feeding mechanism, an axial moving mechanism, a workpiece stabilizing mechanism and an electric control system. The grinding assembly is a flexible grinding wheel formed by splicing a plurality of arc-shaped grinding pieces, a pneumatic motor drives the flexible grinding wheel to rotate at a high speed to serve as main cutting motion, constant-pressure contact control is achieved through a radial feeding mechanism, abrasion of the grinding wheel can be compensated in a self-adaptive mode through the control mode, and it is guaranteed that the grinding pressure is stable; therefore, the reference size of the workpiece is protected to the maximum extent while the defects of the inner wall are effectively removed, the problem of size out-of-tolerance caused by uneven pressure or abrasion in traditional rigid grinding is avoided, constant-pressure, efficient and high-quality grinding is guaranteed, and the grinding and polishing efficiency and quality of the inner wall of the pipe workpiece are effectively improved.

The invention relates to the technical field of micro-pressure oxygen cabins, in particular to an intelligent integrated oxygen generation and coordinated regulation and control method for a micro-pressure oxygen cabin, which comprises the following steps: supplying air to a cabin body of the micro-pressure oxygen cabin by adopting an air compressor, stably increasing the pressure in the micro-pressure oxygen cabin and stabilizing the pressure at a preset treatment pressure of 30kPa-50kPa through an intelligent pressure regulation and control system, high-pressure air in the micro-pressure oxygen cabin body serves as an oxygen production source and is conveyed to the VPSA oxygen production main machine; the VPSA oxygen production main machine adsorbs nitrogen through a zeolite molecular sieve filled in the VPSA oxygen production main machine and collects oxygen; s2, pressurizing the oxygen collected in the step S2 to 0.1-0.4 MPa or above through a supercharger, conveying the oxygen back into the micro-pressure oxygen cabin body, and allowing the user to breathe through an oxygen supply device; an intelligent cooperative control system is constructed, integrated management is carried out on the whole process of pressure boosting, pressure stabilization, oxygen generation, oxygen supply, safety and environment regulation and control, the occupied area and the purchase cost of equipment are reduced, the human error risk is reduced, and the micro-pressure oxygen treatment requirement under multiple scenes is met.

The invention relates to the field of steel member engineering, in particular to a prestressed concrete combined double-chamber box-section bent steel member and a manufacturing method thereof, and the manufacturing method comprises the following steps: S1, welding an inner box chamber and forming an assembly hole; s2, first bolts and second bolts are inserted into the assembly holes; s3, first bolts and second bolts are initially screwed to apply inward prestress to the two webs and the two flange plates, and the side wall of the inner box chamber is made to generate inward concave elastic pre-deformation; s4, welding the outer box chamber and the reinforcing plate; s5, an expansion material is injected into a cavity of the inner box chamber; s6, the expansion material expands to enable deformation of a web plate and a flange plate of the inner box chamber to be reset to the design form; and S7, finally screwing the bolt and stabilizing the pressure. The circumferential confining pressure state of the expansion material is achieved through the prestress bolt system, the compressive strength of the expansion material is multiplied, and therefore the axial compression buckling ultimate load, the compressive bearing capacity and the stability of the bending component are greatly improved.

The invention discloses an extruding machine for aluminum profiles, which belongs to the technical field of extruding machines and comprises an extruding machine body, and a die module, an extruding module and a hydraulic safety module are arranged on a station table; the mold module comprises an installation mold base arranged on the station table, and a discharging mold used for aluminum profile forming is detachably installed on the installation mold base. The extrusion module comprises a foundation seat mounted behind the mounting die holder, an extrusion die holder is arranged on the foundation seat, and an extrusion template is arranged at the end part of the extrusion die holder. In the aluminum blank transfer stage, the extrusion inner mold core is continuously heated through the electromagnetic induction technology of the heating coil, so that the mold temperature is consistent with the aluminum blank temperature; when an aluminum blank enters the extrusion cylinder, the electric push rod drives the heating coil to move to the preheating channel from the constant-temperature annular opening, the aluminum blank is subjected to compensation heating through constant-speed movement, the problem of temperature drop in the transferring process is solved, mechanical locking is conducted on the pressure induction type hydraulic column through the multiple clamping pieces, pressure stability in the shutdown stage is maintained, and extrusion continuity is ensured.

The invention relates to a method and a device for determining the flow characteristic of CO2 in a porous medium and the distribution rule of CH4 in a pore space. The method comprises the following steps: (1) pretreating a sample; (2) system connection and air tightness inspection; (3) vacuumizing the system; (4) temperature control; (5) CH4 saturation and pressure stabilization; (6) displacement experiment and data acquisition; (7) monitoring outlet gas; and (8) data processing. The problem that in existing CO2 geological sequestration and enhanced gas production research, due to the fact that in-situ visualization of the pore size cannot be achieved, a microscopic displacement mechanism is unclear is solved, and the method aims at providing scientific basis and technical support for efficient exploitation of natural gas and effective geological sequestration of CO2.

The invention discloses a gas storage integrated operation model construction method and system based on digital and intelligent twinning, and relates to the field of gas storage integrated operation model construction, and the method comprises the steps: constructing a single well IPR and VLP curve; a mode of combining forward pressure regulation and reverse pressure regulation is adopted, a pressure value set of all nodes after pressure stabilization is output, and a preliminary pressure steady-state scheme is formed; an economic value evaluation index function is constructed, and the total daily operation cost of the system under the given gas production rate is evaluated; a comprehensive optimization model based on a neural network is constructed, and injection-production quantity reference values of all wells and target values of all nodes are output; and verifying the stability of the comprehensive optimization model based on the neural network according to the output injection-production quantity reference values of all wells and the target values of all the nodes. The method has the advantages that the physical law of gas storage injection and production, the system pressure balance and the economical efficiency target are deeply fused, and a fast and reliable closed loop from pressure steady-state optimization to an economical optimal decision is achieved.

The utility model belongs to the technical field of pressure and flow stabilizing devices, and particularly relates to a gas pressure and flow stabilizing device which comprises a valve body, a pressure regulating valve module, a gas flow stabilizing valve module and a flow regulating valve module. A pressure stabilizing structure cavity and a flow stabilizing structure cavity are formed in the valve body, and the pressure regulating valve module is arranged in the pressure stabilizing structure cavity and divides the interior of the pressure stabilizing structure cavity into a lower air inlet cavity and an upper pressure stabilizing cavity. The airflow stabilizing valve module is arranged in the flow stabilizing structure cavity; the flow regulating valve module is arranged on the three-way connecting pipeline and is used for regulating the flow of the gas conveyed to the flow stabilizing structure cavity; the pressure regulating valve module is linked with the air flow stabilizing valve module, so that the demand quantity of air during welding can be reduced to the minimum through automatic regulation of air pressure and air flow in the pressure and flow stabilizing device under different pressures, and meanwhile, the requirement of air consumption during welding can be met.

The invention provides a carbon ring sealing life test device and method, and the device comprises a gas supply assembly, an air pressure stabilizing assembly, a gas drying assembly, a gas regulation and control assembly, a fixed bearing assembly, a movable matching assembly, a power driving assembly, and a sealing measurement assembly. The test device integrates a plurality of components such as gas supply, stable air pressure, gas drying, gas regulation and control, fixed bearing, movable matching and connection, power driving and rotation, sealing measurement and the like to form a complete test system, so that the test process is smoother, the uncertainty and errors in the test are reduced, the sealing performance of the carbon ring can be tested, and the test efficiency is improved. Different working conditions can be simulated, so that the sealing performance and the service life of the carbon ring under different conditions can be comprehensively evaluated, the performance characteristics of the carbon ring can be known more accurately, powerful support is provided for design and improvement of products, and by adjusting parameters and configuration of each component, the sealing performance and the service life of the carbon ring can be accurately evaluated. The sealing performance and the service life of different carbon rings can be accurately tested.

The utility model discloses an anti-backflow fluid pump, which relates to the technical field of fluid transportation and comprises a shell, two pump bodies are fixedly connected in the shell, pump body cavities are arranged in the pump bodies, piston discs are slidably connected in the pump body cavities, a discharge valve plate is arranged in the pump body cavities and located on the right side of a discharge port, and the discharge valve plate is connected with the piston discs. And the feeding valve plate and the discharging valve plate are fixedly connected with springs. The two pump bodies just carry out alternative material conveying and are driven by the same driving source, movement coordination of the two pump bodies is guaranteed, the alternative operation mode enables output of fluid to be always kept continuous, pressure of the fluid can be maintained to be stable, meanwhile, the conveying amount of the fluid is increased, and in the alternative material conveying process, the working efficiency is improved. Starting, stopping and rotating speed changes of the two pump bodies are controlled by the same driving system, and the phenomenon that the pump bodies work asynchronously due to the difference between different driving sources is avoided.

The invention relates to the technical field of medical instruments, in particular to an intelligent compression hemostasis device and method.The intelligent compression hemostasis device comprises a wearable compression body, and a plurality of air bags matched with a wound are arranged on the inner surface of the wearable compression body; the control device is detachably connected with the compression main body and comprises an inflation device and a control panel; the air bag is communicated with an inflation tube through an air tube connector, and the inflation tube is communicated with an inflation device. A pressure sensor and an electromagnetic valve are arranged on an air bag inflation channel, the control panel receives feedback signals of the pressure sensor and controls cooperative action of the inflation device and the electromagnetic valve according to a preset pressure threshold value so as to adjust the inflation and deflation pressure of the air bag, intelligent adjustment of the pressure of the air bag is achieved, and the requirements for compression hemostasis of different wounds are met. The structure is simple, the pressure is stable, the work difficulty of medical staff can be reduced, and practical convenience is brought to patients.

The invention discloses a cooling system pressure regulation and control method and device based on multi-source data fusion, and the method comprises the steps: collecting multi-source data from a cooling system through a sensor, carrying out the fusion processing, and generating a standardized sensor data set. And calculating a comprehensive system pressure value by adopting a data fusion technology according to the standardized sensor data set to obtain a fused pressure data set. And determining a system pressure state through threshold comparison based on the fused pressure data set. And obtaining channel flow data based on the system pressure state, and adjusting the opening degree of a valve to obtain an optimized regulation and control result. And transmitting the optimized regulation and control result to a pressure maintaining system, controlling the valve flow by adopting a pressure stabilization regulation algorithm, and determining a pressure balance index. Therefore, according to the cooling system pressure regulation and control method based on multi-source data fusion, the pressure change can be dynamically responded, the system pressure can be stably maintained, and the air resistance phenomenon can be effectively eradicated.

The invention relates to the technical field of spraying machine equipment, and discloses an oil tank for a spraying machine, which comprises a storage unit, a floating unit and a sealing unit. The paint spraying device is provided with the floating plate and the floating ball, the floating plate and the floating ball move along with the paint liquid level, then it is guaranteed that the material suction box can be located at the designated depth below the paint liquid level all the time, at the moment, the pressure borne by the side wall of the material suction box by paint is certain, an oil pump can continuously and stably suck oil, and therefore the pressure of a spraying system is kept stable; when the material suction box falls to the bottom of the oil tank shell, a rocker arm extrudes and rotates at the moment, the rocker arm drives a force storage cover which is coaxially connected with the rocker arm to rotate anticlockwise at the moment, a force storage rod on the force storage cover drives a sleeve rod to move, a sealing plate and a scraping plate slide at the bottom of the material suction box, and impurities on the surface of a filter screen are removed; and the suction box is integrally sealed, so that impurities at the bottom of the oil tank cannot be sucked into the pipeline, and the maintenance and replacement frequency of the pipeline is reduced.

The invention relates to the technical field of data processing, in particular to a mining disc brake abrasion detection method based on an intelligent sensor, and the method comprises the steps: respectively obtaining the detection abrasion loss of a brake under the conditions of thickness, vibration signals and temperature, so as to comprehensively reflect the abrasion state of the brake; according to the pressure stability of the brake disc in the current time period, the thickness confidence coefficient is obtained; according to the vibration signal difference of the brake between the reference time period with the lowest noise and the current time period, the vibration confidence coefficient is obtained; according to the amplitude characteristics and temperature changes of the acoustic emission signals of the brake disc in the current time period, the temperature confidence coefficient is obtained; according to the thickness confidence coefficient, the vibration confidence coefficient and the temperature confidence coefficient, the detection abrasion loss of the brake under the thickness, the vibration signal and the temperature is subjected to weighted fusion, the final abrasion loss is obtained, then the abrasion state of the brake is judged, and the accuracy of abrasion detection on the brake is improved.

The invention discloses a double-machine regenerative steam-electricity double-drive small turbine thermodynamic system and a control method, belongs to the technical field of power generation, and aims to solve the problem that steam extraction parameter reduction and system power balance maintenance cannot be both considered in the prior art. According to the system, the MCT is adopted to extract exhaust steam of the ultrahigh-pressure cylinder to drive the water feeding pump and the variable-frequency generator, and meanwhile, a low-superheat-degree steam source is provided for the multi-stage heater. When P is greater than Pmax, executing at least one of the following control strategies: (a) adjusting the opening degree of a steam inlet valve of the MCT; (b) the opening degree of an MCT steam exhaust valve is adjusted; (c) adjusting the opening degree of a heater bypass valve; the steam exhaust pressure of the MCT is kept stable through three-way closed-loop control, and safe and efficient operation is achieved by combining power compensation of the variable-frequency generator.