12090 results about "Control valves" patented technology

Disclosed herein are systems and methods for monitoring at least one volatile breathing compound in respiratory gases of patients. A device includes a patient respiratory gas interface coupled via a connector to a gas sampling line. The line includes a first channel for conducting a predetermined flux of respiratory gases from the interface to an inlet of a sidestream gas monitor, which monitors carbon dioxide (CO2) content. A pump facilitates gas flow through the device and the monitor. An outlet of the monitor is coupled to a second channel for conveying gases away. A valve controls passage of respiratory gas from the monitor via the second channel by connecting or disconnecting the flux to / from at least one volatile breathing compound detector, which monitors compound content. A control unit monitors CO2 values and uses this as a signal to control the valve, enabling compound monitoring or bypass based on CO2 content.

The invention discloses a fuel gas intelligent valve with point type laser methane sensors, and relates to the field of fuel gas intelligent valves, and the fuel gas intelligent valve comprises an equipment installation module which is used for installing three point type laser methane sensors and collecting interface methane concentration values; the data acquisition module is used for acquiring pipeline parameters and environment parameter data inside and outside the interface; the risk assessment module is used for calculating the methane concentration change rate according to the methane concentration value and assessing whether gas leakage exists at each interface; the fuel gas leakage positioning module is used for constructing a fuel gas leakage positioning model based on a neural network and acquiring the probability of the fuel gas leakage risk at each interface; the valve self-adjusting module is used for determining whether the gas leakage point is a leakage point or not according to the gas leakage risk probability; and the historical data analysis module is used for calculating the precision ratio, the recall rate and the F1-Score value by using the historical data and the field actual measurement result. The leakage risk of the gas pipeline is effectively diagnosed and positioned, and the opening degree of the valve is intelligently controlled.

A constant-flow control valve group, an auxiliary arm control module, a complete hydraulic system, and a crane. The constant-flow control valve group comprises: a cartridge valve; a cartridge reversing valve, comprising a working oil port on one side and a main oil return port and a reversing valve oil inlet selectively connected to the working oil port on the other side, the working oil port being connected to a control oil port of the cartridge valve, and the reversing valve oil inlet being connected to a main oil inlet of the cartridge valve; and a feedback on-off valve, disposed in a working feedback oil path connected between the main oil inlet of the cartridge valve and a main feedback oil port of the constant-flow control valve group. The auxiliary arm control module comprises the constant-flow control valve group and a main reversing valve. The complete hydraulic system comprises the auxiliary arm control module and an auxiliary arm luffing cylinder, and may further comprise a load-sensitive oil pump and a main valve. The present application can achieve the effect of directly connecting an auxiliary arm hydraulic system to an existing complete hydraulic system as a sub-module without altering the original system.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses an electrolytic bath outlet temperature control method and system, a medium and a program product, a flow control valve is arranged at an inlet of an electrolytic bath, the electrolyte input flow is converted into a core regulation variable directly influencing the outlet temperature, and active control over the outlet temperature is achieved. Furthermore, the flow control valve is directly connected with the control device, the opening degree signal can be received in real time, the flow can be adjusted, it is ensured that the temperature control instruction can be rapidly converted into the actual flow change, and the response speed to power fluctuation is increased. Furthermore, through a real-time operation state parameter set and a real-time temperature monitoring parameter set, it is ensured that a control signal is generated based on a real working condition, and the temperature control stability under fluctuating power is improved. Furthermore, through the synergistic effect of an electrolyte flow feedforward control signal and an electrolyte flow rear-end control signal, frequent current change caused by wind-solar power fluctuation can be effectively handled, and the fluctuation amplitude of the outlet temperature is reduced.

The invention provides an intelligent gas pipe network valve remote control supervision Internet of Things system and method, and relates to the field of intelligent gas control. The method is realized based on the Internet of Things system, and comprises the following steps: obtaining pipe network information and performance parameters of a control assembly, and uploading the performance parameters to a government safety supervision management platform; obtaining a parameter confirmation instruction, determining layout parameters, and uploading the layout parameters to a government safety supervision management platform; a layout confirmation instruction is obtained, and layout parameters are sent to a gas maintenance object platform; after the layout is completed, the regulation and control compensation amount of the control assembly is determined based on the correction period and uploaded to a government safety supervision management platform; and a correction confirmation instruction is obtained, the control assembly is corrected based on the regulation and control compensation amount, the control assembly is controlled to regulate and control the coverage valve based on the regulation and control parameter set in the correction period, a regulation and control gas data pair is obtained, and the regulation and control compensation amount is determined. The arrangement position of the control assembly can be reasonably determined, and the regulation and control deviation is accurately evaluated to ensure the remote control effectiveness of the valve.

The utility model discloses a differentiated zoned irrigation and fertilization system for seed corn, which relates to the technical field of agricultural drip irrigation and fertilization equipment and comprises a plurality of drip irrigation tape units, male parent irrigation branch pipes and female parent irrigation branch pipes. The drip irrigation tape unit comprises single male parent drip irrigation tapes, single female parent drip irrigation tapes and double female parent drip irrigation tapes, and the ratio of the number of the single male parent drip irrigation tapes to the number of the single female parent drip irrigation tapes to the number of the double female parent drip irrigation tapes is 1: 1: 3; the single male parent drip irrigation tape is connected with the male parent irrigation branch pipe, and the single female parent drip irrigation tape and the double female parent drip irrigation tape are connected with the female parent irrigation branch pipe; the male parent irrigation branch pipe and the female parent irrigation branch pipe are connected with an original farmland irrigation pipe network through a shunt valve, and a master control valve is arranged between the shunt valve and the original farmland irrigation pipe network; the water inlet ends of the male parent irrigation branch pipe and the female parent irrigation branch pipe are respectively provided with a control valve. The device can meet the water and fertilizer requirements of male parents and female parents respectively, the emergence rate and uniformity of the male parents and the female parents are improved, the seed yield and quality are improved, and the water and fertilizer utilization efficiency is improved.

The invention discloses an automobile sensor laser processing device which comprises a laser module and an air floatation module assembled on a processing table top, the laser module comprises a motion platform capable of driving a laser to move, and the air floatation module comprises a base and an air floatation disc. A first air outlet hole group, a first air inlet hole group and a second air outlet hole group are formed in the upper end surface of the air floating disc; the base is provided with an air inlet port and an air outlet port; the first air outlet hole group and the second air outlet hole group are communicated with each other and are connected with the air inlet port through an air inlet pipe; the first air inlet hole group is connected with the air outlet port through an air outlet pipe; control valves are respectively arranged on the air inlet pipe and the air outlet pipe; and the air floating module is configured to eject air through the first air outlet hole group and / or the second air outlet hole group so as to form an air floating surface at the bottom of the wafer, and suck air through the first air inlet hole group so as to generate negative pressure at the bottom of the wafer for non-contact limiting of the wafer.

The invention relates to the technical field of flue gas recirculation, in particular to a bell-type annealing furnace oxygen-rich combustion flue gas recycling system and method, and the system comprises a circulating flue gas heating cylinder, an oxygen-rich combustor and a system control valve group; oxygen of the oxygen-rich combustor is mixed with fuel, after the fuel enters the circulating flue gas heating cylinder, the oxygen is mixed with part of the fuel to form root flame, and the unburned fuel and oxygen are completely combusted in the circulating flue gas heating cylinder to form flameless flame; the number of the circulating flue gas heating cylinders is one or more, each circulating flue gas heating cylinder is provided with an oxygen-rich combustor, heat generated by combustion is used for heating flue gas generated by combustion of oxygen and fuel in the circulating flue gas heating cylinders, the heated flue gas is circulated to the bell-type furnace through the high-temperature and high-pressure circulating flue gas fan, and redundant flue gas is recycled in a centralized mode. According to the system, heat is fully utilized through flue gas circulation, heating uniformity and quality are improved, combustion flue gas is high-purity carbon dioxide, and zero emission of the flue gas can be achieved through trapping and recycling.

The utility model discloses a brewing sampling device for producing pleurotus ostreatus tea, which comprises a base, a central seat is arranged in the middle of the base, and a heating module is arranged at the top of the central seat; the brewing container is detachably installed on the center base, a top cover is detachably installed on the top of the brewing container, and an exhaust pipe is arranged on the top cover; the output pipe is arranged on one side of the brewing container, the output pipe is communicated with the interior of the brewing container, the output pipe is of an L-shaped structure, and a control valve used for controlling the output pipe to be connected and disconnected is arranged on the output pipe. According to the pleurotus ostreatus tea brewing device, the brewing container, the annular rotating frame and other structures are arranged, pleurotus ostreatus tea can be brewed through the brewing container, and after brewing, the output pipe can be controlled to be conducted and output samples based on the control valve, and the samples are received by the sampling container; the driving part works to drive the annular rotating frame to rotate, so that a plurality of sampling containers are used for sampling, and the efficiency and the practicability are improved.

A centrifugal separation system includes a centrifugal separator, a liquid feed mixture conduit, a light phase conduit, a heavy phase conduit, and a flow control system. The flow control system includes a controller, a flow control valve arranged in a light phase conduit, a liquid feed mixture measuring device, and at a light phase measuring device and / or a heavy phase measuring device. The controller is configured to control the flow control valve based on measurements from the liquid feed mixture measuring device and measurements from the light phase measuring device and / or the heavy phase measuring device.

The invention discloses an air-fuel ratio control method for a high-pressure direct injection engine in a diesel-natural gas dual-fuel cylinder, and relates to the technical field of engine control, and the air-fuel ratio control method comprises the following steps: collecting diesel mass flow, natural gas volume flow and natural gas component data, and determining a diesel-natural gas mixing ratio; a basic target air-fuel ratio is obtained by combining the real-time rotating speed of an engine, the load and the diesel oil-natural gas mixing proportion; based on the pressure and temperature of the intake manifold and the rotating speed of the engine, the target air-fuel ratio after model correction is obtained; the working condition load change rate is detected, the pre-optimized air-fuel ratio trajectory MAP is called, and a transient correction target value is generated; calculating the deviation between the transient correction target value and the measured value of the air-fuel ratio sensor and the deviation change rate, and outputting an air-fuel ratio correction value; and the final target air-fuel ratio is calculated and sent to an air flow control valve to execute air inlet adjustment. The method is suitable for engine application scenes requiring high-precision and self-adaptive control to improve combustion efficiency and reduce emission.

The invention discloses a battery system and a heat management method, and relates to the technical field of energy storage, the battery system comprises an immersion box and a plurality of battery packs, and also comprises a controller, a temperature measurement assembly, a control valve group, a spray pipe, a heat management module and a fire protection module; cooling liquid is contained in the immersion box, an opening is formed in the top of the immersion box, and the multiple battery packs are contained in the immersion box and soaked in the cooling liquid. The battery pack comprises a shell and a plurality of batteries, a cavity is formed in the shell, and cooling liquid is contained in the cavity; an opening is formed in the top of the shell; the plurality of batteries are accommodated in the cavity and are soaked in the cooling liquid; the spraying pipes are arranged in the cavities of the battery packs in a one-to-one correspondence manner; the heat management module and the fire-fighting module selectively communicate with the spraying pipelines in the battery packs through the control valve group; the temperature measuring assembly is used for measuring the temperature of the batteries in the battery pack, and the controller is used for controlling the valve group to be switched on or switched off according to the temperature of the batteries. The battery pack is designed in a non-sealing mode, and the unreliable condition of a system under high pressure is avoided.

The safety-level high-precision air volume control valve comprises a valve body assembly, the valve body assembly comprises a frame, blades, a rotating shaft and a driving structure, the frame is hollow to form a cavity, openings are formed in the two sides of the cavity in the first direction respectively, the rotating shaft extends in the second direction, the blades are connected into the cavity through the rotating shaft, and the driving structure is in driving connection with the rotating shaft; the second direction is perpendicular to the first direction; the flow measuring assembly comprises a flow measuring frame and a flow measuring element, the flow measuring frame is hollow to form a flow measuring cavity, the flow measuring frame is connected with one side face of the frame, the flow measuring cavity is communicated with the cavity, the flow measuring element is arranged in the flow measuring cavity and used for obtaining airflow parameter information of the flow measuring cavity, and the flow measuring element is electrically connected with the driving structure; the driving structure is configured to control the rotating shaft to drive the blades to rotate according to airflow parameter information acquired by the flow measuring element. High-precision control and adjustment of the air volume can be achieved.

The invention relates to the technical field of valves, in particular to a high-pressure-resistant quick opening and closing flat valve which comprises a valve body, a first valve seat, a second valve seat, a valve plate and a valve rod. The first valve seat and the second valve seat are arranged in a medium channel of the valve body, the valve plate is arranged between the first valve seat and the second valve seat in a sealing and sliding mode, and the valve rod is in driving connection with the valve plate. The middle of the valve rod is slidably connected to a valve deck in the middle of the top of the valve body, the hand wheel driving mechanism is connected to the upper portion of the valve deck, a pressure relief pipeline is arranged on the valve body, and the two ends of the pressure relief pipeline are communicated with a high-pressure side cavity, back to the valve plate, of the first valve seat and a low-pressure side cavity, back to the valve plate, of the second valve seat respectively. The pressure relief pipeline is provided with a pressure relief control valve used for controlling connection and disconnection of the pressure relief pipeline. The pressure difference generated by high-pressure fluid on the two sides of the valve plate can be balanced before the valve plate is opened, the main factor causing huge operation torque is fundamentally eliminated, opening and closing of the valve plate are extremely labor-saving and rapid, and rapid opening and closing under the high-pressure working condition are achieved.

The utility model discloses a heat management system based on an air floatation centrifugal compressor and a machine room. The heat management system comprises the air floatation centrifugal compressor, an evaporator, a condenser and a throttling element. An air inlet of the air flotation centrifugal compressor communicates with an outlet of the evaporator, a liquid cooling module is arranged in the air flotation centrifugal compressor to cool a motor of the air flotation centrifugal compressor, an inlet of the liquid cooling module is connected to an outlet of the condenser through a first control valve, and an outlet of the liquid cooling module is connected to an inlet of the evaporator. The evaporator is arranged at the to-be-cooled device to absorb heat emitted by the to-be-cooled device. An inlet of the condenser communicates with an exhaust port of the air flotation centrifugal compressor, and the throttling element is arranged at an inlet of the evaporator and used for conducting throttling expansion on the cooled refrigerant. The heat management system is applied to the machine room, an oil separator and corresponding pipelines are omitted, the overall structure is simple, and meanwhile the heat dissipation efficiency can be improved.

The utility model relates to a combination valve which comprises a manifold block provided with a main flow channel, a liquid outlet flow channel, a plurality of valve cavities located between the main flow channel and the liquid outlet flow channel, and communicating flow channels used for communicating the main flow channel and the valve cavities respectively. The cover assembly is mounted on the manifold block, and a mounting cavity opposite to the valve cavity is formed in the cover assembly; the mounting cavity and the valve cavity are arranged in a separated mode through the valve assembly, and the valve assembly can move to control connection and disconnection of the valve cavity and the communicating flow channel; the driving assembly is arranged in the mounting cavity, is connected with the valve assembly and is used for driving the valve assembly to move; the communicating flow channel is provided with a first end communicated with the main flow channel and a second end communicated with the valve cavity, and the main flow channel is provided with a liquid inlet end; at least one communicating flow channel is obliquely arranged, and the second end of the oblique communicating flow channel is located on the side, away from the liquid inlet end, of the first end in the flowing direction of fluid in the main flow channel. The communication flow channel is arranged to be of an inclined structure, so that the flow in the communication flow channel can be increased.

The utility model discloses a small-caliber double-cone slender equipment internal coating automatic spraying spray gun, which comprises a spray gun head, a spraying pipeline and valves, three nozzles with different orientations are arranged outside the spray gun head, a coating pipeline and an auxiliary atomizing air pipeline which are independently connected with each nozzle are connected inside the spray gun head, a control valve is arranged on each pipeline, and the spray gun head is connected with the spraying pipeline. Therefore, each nozzle can be independently controlled. According to the utility model, through the position change of the spray gun and the independent control of the nozzle feeding, the automatic spraying requirement of the coating in the small-caliber double-cone slender equipment with the inner diameter of more than 50mm can be met, the coating spraying quality and efficiency are improved, and the application prospect is wide.

The invention relates to the technical field of drainage control, in particular to a liquid level sensing drainage control method and system based on electronic and floating ball cooperative detection, and the method comprises the steps: fusing the angular displacement, capacitance value and acceleration disturbance data of a floating ball, and constructing a liquid level state observer; a dynamic compensation factor is introduced to strip liquid shaking interference, and an accurate liquid level reference value is obtained; a composite control vector is constructed based on the liquid level deviation and the change rate, and a drainage instruction is generated through analysis to control a valve to act; meanwhile, a self-adaptive feedback adjustment mechanism is established, observer parameters are dynamically calibrated through liquid level response residual errors, and the drifting error of an actuator is offset; according to the technical scheme, the robustness of drainage control can be remarkably improved.

The invention relates to a laser processing system and method with atmosphere auxiliary protection, and the processing system comprises a laser head which is used for generating and transmitting a laser beam to the downstream, and the side part of the laser head is provided with a gas inlet interface for introducing protective gas; the upstream end of the atmosphere protection cover is connected with the lower part of the laser head, the atmosphere protection cover comprises a cover body and an axial adjustable gas cover capable of axially displacing relative to the cover body, and an adjustable gas-light coaxial nozzle is arranged at the tail end of the axial adjustable gas cover; the atmosphere protection cabin is arranged below the atmosphere protection cover and comprises a working table, an observation window and a flexible sealing telescopic cover, the observation window, the working table and the flexible sealing telescopic cover jointly form a closed laser processing cavity, the working table is located at the bottom of the laser processing cavity, and the flexible sealing telescopic cover is located at the bottom of the working table. A first end of the flexible sealing telescopic cover is connected with the bottom of a cover body of the atmosphere protection cover in a sealing manner, and a second end of the flexible sealing telescopic cover is connected with the top of the observation window in a sealing manner, so that a dynamically-sealed channel which is telescopic along with the movement of the laser head is formed between the atmosphere protection cover and the atmosphere protection cabin; the gas supply unit is used for independently supplying protective gas to the gas inlet interface of the laser head and the gas inlet control valve of the atmosphere protection cabin; and the laser smoke dust purification unit is connected to a gas outlet control valve of the atmosphere protection cabin and is used for pumping, discharging and purifying gas in the atmosphere protection cabin and smoke dust generated in the machining process.

The invention discloses a cooling device and glass fiber production equipment, and relates to the technical field of glass fiber production, and the cooling device comprises a spray pipe, an air supply pipeline, a control valve and a control system. Wherein the spray pipe is provided with a plurality of air nozzles distributed at intervals along the longitudinal direction, the plurality of air nozzles are used for spraying air flow towards one side deviating from the bushing so as to form an air vortex capable of reducing the temperature of the bushing and the root of the glass fiber on one side deviating from the bushing of the spray pipe, and the air supply pipeline is connected with the spray pipe and is used for supplying the air flow to the spray pipe; the control valve is arranged on the air supply pipeline and used for controlling the flow of airflow in the air supply pipeline, and the control system is in communication connection with the control valve and used for controlling the opening degree of the control valve according to the wire drawing operation state. The cooling device can stabilize the temperature of the bushing plate when the wire drawing operation is interrupted or the machine head is switched, reduces the number of waste products, and meets the cooling requirement of the bushing plate with high hole number for producing small-diameter fibers, so that the productivity and the economic benefit of a wire drawing operation unit are improved.

The invention provides an online monitoring device for multiple nuclides in liquid effluent, and particularly relates to the technical field of radioactive substance detection. The online monitoring device comprises a shell, a cascade separation module, a fluid control module, a detection module and a control system, the cascade separation module, the detection module and the control system are arranged in the shell, the cascade separation module comprises a plurality of resin columns and a plurality of separated liquid collecting bottles communicated with the resin columns, and the separated liquid collecting bottles are communicated with the resin columns. The fluid control module comprises a liquid storage device, an injection pump and a control valve, the liquid storage device is respectively communicated with the plurality of resin columns through pipelines, the injection pump and the control valve are respectively arranged on the pipelines and are used for controlling the flow direction and the flow velocity of fluid in the liquid storage device, and the detection module is used for detecting the radioactive activity of nuclide; the control system is used for controlling operation of the cascade separation module, the fluid control module and the detection module. According to the invention, synchronous monitoring of multiple nuclides is realized, the multi-nuclide monitoring efficiency is improved, and the monitoring cost is reduced.

The invention relates to the technical field of driving control of symmetrical vacuum pressure control valves, in particular to a zero-point-free zero returning method of a double-position synchronous motor for a symmetrical vacuum pressure control valve, which is suitable for scenes needing high-precision pressure control, such as semiconductor manufacturing, vacuum coating, precision vacuum detection and the like. The problems that in the prior art, the vacuum sealing performance is damaged by depending on a special sensor, cost is high, abrasion of a sealing ring is aggravated due to zero point fixation, and double-shaft synchronization precision and load distribution are disjointed are solved. According to the method, the position where the sealing ring reaches the sealing pre-tightening force serves as a dynamic non-fixed zero point, an additional zero point sensor or a collision sensor or a horizontal sensor is not needed, the current-torque coupling characteristic of a motor is utilized, and full-process automatic control is achieved through a high-precision Hall current sensor and an incremental encoder. The method comprises the following specific steps: initializing motor parameters, establishing a T = K * I mapping relation, calibrating a current overload threshold value, calibrating a current detection module, synchronously starting and operating double motor shafts, identifying a collision state based on current detection, locking and verifying a zero returning position, and judging zero point uniqueness based on torque uniformity. The double-shaft zero returning repetition precision is high, zero point uniqueness judgment fits the actual working condition, uneven abrasion of the sealing ring can be reduced, the service life of the sealing ring and the maintenance period of the valve are prolonged, meanwhile, the equipment manufacturing cost and the maintenance difficulty are reduced, and the vacuum sealing stability and the pressure control precision of the symmetric vacuum pressure control valve are effectively improved.

The invention discloses a gas TPSA compression interstage purification integrated device control system and method. The system comprises a gas compression unit, an adsorption purification unit, a regeneration gas treatment unit and a control unit. The gas compression unit comprises a gas inlet pressure stabilizing valve, a gas compressor preceding stage, an interstage gas-gas heat exchanger, a compressor backward stage, an interstage pressure control valve and a backflow control valve, wherein the gas compressor preceding stage is used for pressurizing low-pressure raw gas and backflow regenerated gas to the pressure required by purification; compression heat of the interstage gas heat exchanger is used for preheating regenerated gas; the rear stage of the gas compressor is used for pressurizing the purified raw material gas to the pressure required by the downstream; the technical problems that a traditional TPSA gas purification device needs at least two compressors for staged compression, purification and compression systems are high in energy consumption, and loads are not easy to adjust are solved.

The utility model provides an efficient high-pressure atomization spraying device which comprises a rack, a conveying device, an adjustable spraying device, a feeding control device and a dustproof device. The conveying device comprises a plurality of driving rollers which are horizontally arranged at intervals; the adjustable spraying device comprises a plurality of nozzle mounting plates, and a plurality of nozzles with upward nozzles are fixedly mounted on the nozzle mounting plates; the feeding control device comprises a high-pressure feeding pipe, a control valve and a flow valve; the spray head is sequentially connected with the control valve, the flow valve and the high-pressure feeding pipe; the dustproof device comprises a dustproof upper cabinet and a dustproof lower cabinet. The dustproof upper cabinet and the dustproof lower cabinet are arranged, all-directional dust prevention is achieved, the environment protection performance is good, the working environment is good, and harm to the body health of workers is prevented. By means of the conveying device, the adjustable spraying device and the feeding control device, automatic monitoring, automatic control and automatic assembly line type production can be achieved, and production efficiency is high.

The utility model provides an active dynamic balancing device based on a tower crane. The active dynamic balancing device comprises a tower body, a working arm and a balancing arm, wherein the working arm and the balancing arm are fixedly mounted on two sides of the top of the tower body respectively; a water storage tank and a balance water tank are fixedly mounted on the balance arm, and the bottom of the water storage tank is communicated with the balance water tank through a connecting pipeline; and a control valve group for controlling water distribution between the water storage tank and the balance water tank is arranged on the connecting pipeline. According to the utility model, the balance weight of the balance arm is designed into the capacity-adjustable water tank, the working moment is balanced by utilizing the moment generated by the dead weight of the water body, the volume of the balanced water body is adjusted in real time according to requirements, so that the moment is changed, and the quantity of the water body distributed in the water storage tank and the balanced water tank is adjusted in real time according to the working moment. And the balance moment is synchronously equal to the working moment in real time.

The invention discloses a control valve drawing part intelligent identification system, and belongs to the technical field of intelligent manufacturing and drawing identification, the system obtains a direction control valve drawing sample, combines a QATM algorithm, a YOLO model, EAST and TesseractOCR, and U-Net and a graph theory algorithm to carry out multi-modal feature extraction and joint identification, constructs a three-level classification matching system, and outputs an initial identification result; through label data conversion, manual sampling auditing, initial recognition standard construction, extended label data generation and comprehensive precision label data fusion, multiple times of iterative optimization of an initial model is achieved, and finally a high-precision detection model is output. Automatic and intelligent recognition of part structures, parameters and topological relations in control valve drawings is achieved; the drawing recognition efficiency and accuracy are remarkably improved, and the method is suitable for industrial drawing digitization and intelligent assembly application.

The invention relates to the technical field of mechanical equipment fault diagnosis, and discloses a fault diagnosis method and system for an automatic tensioning control valve of a scraper conveyor. The method comprises the following steps: acquiring pressure and flow data of a main flow channel and an auxiliary flow channel through a sensor array, and extracting frequency domain characteristics to obtain a standardized frequency spectrum; detecting parameter coupling abnormity based on the spectrum cross correlation coefficient and generating an abnormal index; environment interference and medium viscosity data are fused, and non-linear feature distribution and correction deviation representing the mechanical state are obtained through classification and filtering analysis; matching the correction deviation with a preset fault mode, determining a fault type, and generating a fault positioning coordinate in a three-dimensional space by using an optimization algorithm; and finally, performing fluid dynamic simulation through the high-fidelity virtual model to verify the coordinate stability, and outputting accurate early warning when conditions are met. Through cooperation of multi-source information fusion and an intelligent algorithm, the accuracy of early-stage internal fault diagnosis of the complex double-flow-channel valve is improved.

The invention provides an impact rotary drilling hydraulic control system of a dinting machine, which belongs to the technical field of hydraulic control systems and comprises a variable pump, a pilot oil source control valve group, a proportional multi-way valve, a shuttle valve I, a one-way pressure reducing valve, a shuttle valve II, a drilling machine pilot handle group, an impact rotary drilling machine, a bidirectional hydraulic lock and a drilling machine feeding oil cylinder. According to the hydraulic control system for percussive rotary drilling of the dinting machine, the percussive rotary drilling machine can perform stepless speed regulation between two speeds, high-frequency percussive or low-frequency percussive operation can be flexibly used according to rock stratum and geological working conditions, the application range of equipment is greatly widened, and the hydraulic control system can be used for rock stratums with high hardness, weathered rock stratums and hard and brittle geology. And during low-frequency impact operation, one-key linkage operation can be realized, namely, the functions of feeding, rotating and impacting of the drilling machine can be completed by operating the impact pilot handle.

The invention discloses a flow scheduling method and device, a medium and a program product, and relates to the technical field of heat dissipation, and the method comprises the steps: obtaining a video memory access frequency as a main parameter when a parallel computing function is executed, matching with other auxiliary parameters related to heat consumption, distributing a weight, determining a heat load scoring result, and then adjusting a cold plate micro-channel flow distribution coefficient, and determining an opening value of a flow control valve and sending a flow scheduling instruction to the liquid cooling system so as to dynamically adjust the cooling liquid flow of each cold plate micro-channel. In this way, accurate temperature control and heat dissipation of the video memory area of the computing device can be achieved, energy waste caused by unnecessary circulation of cooling liquid is avoided, the heat dissipation efficiency is remarkably improved, energy consumption is reduced, and the service life of the computing device is prolonged; in addition, the mode can autonomously complete full-flow operation such as video memory heat consumption monitoring, score calculation and flow adjustment, intelligent management of the heat dissipation process is achieved, manual operation errors and cost are reduced, and the stability and reliability of operation of computing equipment are guaranteed.

The embodiment of the invention provides an operation method of a height-adjustable pillow and the height-adjustable pillow, and relates to the field of articles of daily use. And under the condition that the external pressure is removed, the elastic body in the air bag rebounds to generate negative pressure, and air enters the air bag through the opened control valve and / or one-way valve to complete the inflation action. Under the condition that external pressure is applied, the controller obtains current sleeping posture data through the sleeping posture detection assembly and recognizes the current sleeping posture of a user, then the control valve of the corresponding air bag is opened to conduct deflation operation, and after the real-time detection value meets the requirement, the controller closes the control valve and stops the deflation process. According to the method, an elastic body is arranged in an air bag, and the synergistic effect of a control valve and an air pressure sensor is combined, so that automatic adjustment of the height of the pillow and low-noise inflation are achieved, and the system complexity and the maintenance cost are greatly reduced while the functionality of the height-adjustable pillow is guaranteed; and the overall reliability of the product and the user experience are improved.