41results about How to "Reduce opening" patented technology

The application provides a swept-back three-beam thin wing composite wing structure, which comprises a wing main body and an aileron installed in a wing main body mounting groove, the wing main body comprises a wing skeleton and a wing outer skin structure outside the wing skeleton; the wing skeleton comprises a longitudinal member unit and a transverse member unit, the longitudinal member unit comprises a front beam, a middle beam and a rear beam, the front beam and the middle beam and the middle beam and the rear beam are arranged at acute angles, the transverse member unit comprises a plurality of wing ribs arranged between the front beam and the middle beam, between the middle beam and the rear beam and on one side of the front beam towards the front of the fuselage; the front beam, the middle beam and the rear beam are all provided with a spar connecting head for connecting with the fuselage. The wing provided by the application adopts a three-beam structure, each wing beam has a mouth-shaped cross section, so that each wing beam forms a multi-wall form, can bear the bending moment and the torque brought by a large wing effective load, and the wing structure is light in weight, high in strength and good in integrity.

The application provides a control method and system of a throttling well killing manifold, the throttling well killing manifold is connected with a wellhead device, and comprises a rapid blowout channel and a common blowout channel which are arranged in parallel, and a throttle valve is installed on the common blowout channel; the control method comprises the following steps: real-time monitoring of wellhead casing pressure P a and standpipe pressure P1, and determining the pressure difference between the wellhead casing pressure and the standpipe pressure; when P a -P l <P z , the drilling operation is normal, and the throttling well killing manifold is not opened; when P z ≤P a -P1<aP z , the throttling well killing manifold is opened, and the opening degree of the throttle valve is dynamically adjusted according to a throttle valve opening degree processing model; when P a -P1≥aP z , or there is no drilling fluid to be recovered in the separator and the well is full of gas, the rapid blowout channel is opened, and blowout operation is implemented. In the process of implementing the blowout operation, the application adopts multi-channel control, and ensures the timeliness and safety of the blowout.

The invention discloses a crop irrigation short-term prediction method and system based on fuzzy control, and relates to the technical field of intelligent agriculture and irrigation control, and the method comprises the steps: collecting weather, multi-depth soil moisture content and field time sequence data of a crop growth stage, and obtaining irrigation feedback; processing the data, and inputting a time sequence prediction model to output water demand prediction values of one to three days and confidence obtained by mapping historical verification errors; fuzzifying the water demand predicted value, the real-time root zone moisture content and the growth stage index, performing weighted deduction and fuzzification based on a fuzzy rule base with a rule dynamic weight, and outputting planned irrigation duration or irrigation amount; and calculating the actual water consumption and updating the dynamic weight of the rule in the post-irrigation evaluation time window according to the water balance and the root zone soil moisture reserve variation. Through confidence risk suppression and post-irrigation closed-loop self-tuning, the stability of short-term prediction driving irrigation decision is improved, the over-irrigation and over-seepage risks are reduced, and the utilization efficiency of irrigation water is improved.

The utility model relates to a cooling tower technical field especially is a kind of windbreak adjusting structure for cooling tower of thermal power plant, including windbreak mechanism and for, windbreak mechanism includes: main component, including the frame of being set in cooling tower air inlet;Execution component, including the vane component of being set in the inside of frame, vane component one end is provided with support rod, and the side of frame is provided with connecting rod, and connecting rod and support rod are hinged;Driving assembly, set in the side of frame and for controlling vane component rotation;The vane component includes the equal interval distribution of several louvers that are rotatably installed in the inside of frame, and the recess is set in the bottom of front end and the top of rear end of louvers, and sealing strip is fixed in recess;Through hand wheel drive worm gear mechanism linkage control louvers synchronous opening and closing, realize air intake accurate regulation, improve cooling efficiency and prevent icing;When closing, sealing strip and fender form double seal, ensure excellent air tightness, adapt to different working condition demand.

The application discloses a control method of an electronic expansion valve of an air conditioner, and the control method comprises the following steps: obtaining the indoor environment temperature of the air conditioner during the low-temperature heating process of the air conditioner or when the air conditioner enters the low-temperature heating process; and reducing the opening degree of the electronic expansion valve of the outdoor unit of the air conditioner according to the difference between the user-set temperature and the indoor environment temperature. The application further discloses a control device of the electronic expansion valve of the air conditioner, an air conditioner and a computer storage medium. According to the difference between the user-set temperature and the indoor environment temperature, the opening degree of the electronic expansion valve of the outdoor unit is reduced when the air conditioner is in the low-temperature heating process, so that the evaporation temperature of the outdoor unit is reduced, the heating capacity of the indoor unit is improved, the indoor temperature is raised faster, and the indoor heating effect is improved.

This invention discloses a high-mobility spin field-effect transistor (SFET), comprising a source electrode, a drain electrode, a gate electrode, a semiconductor channel, and a substrate. Compared to existing SFETs based on a single semiconductor channel, this semiconductor channel structure offers advantages such as tunable band structure, high mobility, tunable carrier concentration and type, and long spin diffusion length. Compared to traditional substrate-based SFETs, this invention introduces a substrate with piezoelectric properties, allowing for the modulation of carrier spin transport within the semiconductor channel through the surface polarization electric field of the substrate. This effectively reduces the turn-on or turn-off voltage and improves gate control. Compared to existing SFET fabrication processes, this invention optimizes the crystal quality of the spin tunneling layer, increases carrier spin polarization, thereby improving the device's on / off ratio and reducing operating current.

The utility model relates to the technical field of silica gel mixing, and discloses a kneading and stirring device with a cover opening mechanism, which comprises a frame, a case, a cover, a stirrer, a controller, a vacuum device and the cover opening mechanism, the case, the stirrer, the controller and the cover opening mechanism are mounted on the frame, the driving end of the cover opening mechanism is connected with the cover, and the cover opening mechanism is connected with the vacuum device. The cover opening mechanism is used for opening or closing the machine cover, the stirring end of the stirrer is arranged in the machine box, the vacuum device is arranged on the machine cover and used for vacuumizing the interior of the machine box after the machine box is tightly covered with the cover, and the control end of the controller is electrically connected with the control end of the stirrer, the control end of the vacuum device and the control end of the cover opening mechanism. According to the device, introduction and doping of air impurities can be reduced, and discharging of mixed silica gel is facilitated. A material door and a discharging table are matched with each other, so that silica gel materials can be conveniently discharged; the combination of the vacuum device and the case is adopted, so that air in the case can be vacuumized by the vacuum device, and introduction of air impurities is reduced.

The application discloses a high internal pressure chamber axis determination method, and takes the direction of the minimum horizontal principal stress in the ground stress as a reference standard, and determines the direction of the longitudinal axis of the high internal pressure chamber as a direction which is not more than 25 degrees with the direction of the minimum horizontal principal stress and is maximally close to the strike of the main structure surface of the rock mass, according to the direction of the longitudinal axis of the high internal pressure chamber, the direction of the long axis on the cross section of the high internal pressure chamber should be consistent with the direction of the minimum ground stress. The application provides an effective method for determining the axis of the high internal pressure chamber such as compressed air energy storage, the method can maximize the surrounding rock pressure on the cross section of the chamber, fully utilizes the surrounding rock pressure in the stratum to balance the air pressure in the gas storage chamber, and is more favorable for the stability of the chamber structure; the method can reduce the opening degree of the structure surface in the surrounding rock as much as possible, and is more favorable for the sealing of the high internal pressure gas storage chamber.

The present application belongs to smelting energy consumption control technical field, especially to a kind of furnace section outlet sealing device in annealing pickling process, first transmission frame is fixed with first transmission mechanism and second transmission mechanism, the accessory of first transmission mechanism and second transmission mechanism is fixed on second transmission frame, bearing seat support is fixed on the top surface of first bracket, bearing seat support is installed on both sides with side plate, first rocker mechanism and second rocker mechanism are respectively installed on side plate, first transmission mechanism is connected with first rocker mechanism below, second transmission mechanism is connected with second rocker mechanism below, detection mechanism is fixed on the outer wall of transmission side furnace shell, first transmission mechanism and second transmission mechanism bottom two ends are respectively connected with suspender mechanism, suspender mechanism bottom end is respectively connected with lower sealing door and upper sealing door through lifting rod.The device drives upper and lower sealing door to rise and fall using first transmission mechanism and second transmission mechanism, combines detection mechanism to control opening distance, guarantee strip steel to pass through normally and smoothly, reduce heat loss.

The invention discloses a multi-split air conditioning system which comprises an outdoor unit, an air conditioning unit and a control unit. The indoor units are connected to the outdoor units through refrigerant piping and are provided with indoor throttling elements in a matched mode; a control device for controlling the outdoor unit and the plurality of indoor units; in the heating process, the control device receives a shutdown or shutdown instruction, evacuation operation is executed, and refrigerants on the indoor unit side move towards the outdoor unit side; the control unit is configured to execute the following control so that the pressure of the air suction side and the pressure of the exhaust side of the compressor can reach a balanced state: when evacuation operation is executed, the indoor throttling element is controlled to be in a valve opening state, and the outdoor throttling element is controlled to be in a set opening degree; and after the evacuation operation is finished, the indoor throttling element is kept in a valve opening state, the outdoor throttling element is kept in a set opening degree, and then the outdoor throttling element is controlled to work in a valve closing state. The multi-split air conditioning system is ensured to stably operate in the shutdown or shutdown process, and noise is remarkably restrained.

The utility model relates to the field of kitchen utensils, especially disclose a kind of stove, it includes: bottom shell, knob, angle sensor, drive mechanism;The bottom shell is provided with air inlet, the air inlet is opened and closed by baffle, the drive mechanism is used to drive the opening and closing of the baffle, the angle sensor is used to detect the rotation angle of the knob, the angle sensor is electrically connected to the drive mechanism.The angle sensor and drive mechanism are electrically connected in the stove, so that the opening of baffle can be controlled by detecting the rotation angle of knob, when the rotation angle of knob is controlled to increase, the opening of air inlet increases, when the rotation angle of knob is controlled to reduce, the opening of air inlet reduces.

The application provides a high-low temperature environment endurance test bench and test method for a constant velocity joint sealing cover, three pairs of clamping sleeves are used to clamp three input shafts and output shafts of the constant velocity joints respectively on the left side and the right side, the temperature of a high-low temperature box is adjusted according to requirements during the test, a large swing mechanism and a small swing mechanism drive the input shaft and the output shaft to swing respectively at a required angle and frequency, a rotating mechanism drives the constant velocity joint to rotate at a required rotating speed, the offset of the rotating center of the telescopic ball cage type constant velocity joint on the input shaft side is adjusted, the input shaft can be relatively moved with the cylindrical shell, for different specifications of the constant velocity joints, only the matched clamping sleeves need to be replaced, the loading mechanism is connected to the right end of the right rotating shaft of the rotating mechanism, the comprehensive performance test of the constant velocity joint can be conducted, the test bench can simulate the working condition of the real vehicle, the high-low temperature environment endurance test of multiple constant velocity joint sealing covers can be conducted, the high-low temperature box has less openings, the high and low temperatures can be adjusted more effectively, the operation is convenient, and the adaptability is strong.

This application relates to a switch assembly and device. The switch assembly includes a housing, a blocking part, and an operating part. The housing has a through hole. The blocking part is slidably mounted on the housing. The operating part includes a knob and a drive platform protruding from the side wall of the knob. The knob is rotatably mounted on the housing. The drive platform is drivenly connected to the blocking part and is adapted to drive the blocking part to slide, thereby opening or closing the through hole. Thus, the design of driving the blocking part to slide by rotating the knob reduces the operating space and ensures that the blocking part can always cover the opening when the housing size changes, improving the versatility of the switch assembly.

The utility model discloses a mold opening and closing oil way and an injection molding machine, and relates to the technical field of injection molding equipment. The mold opening and closing oil way comprises an oil supply device, an oil tank, a mold locking oil cylinder, a main valve, a pilot direction valve, a speed reduction one-way valve and a damping screw, the main valve comprises a main valve body, a main valve element, a first side end cover and a second side end cover, and reset springs are arranged between the main valve element and the first side end cover and between the main valve element and the second side end cover; the main valve body comprises a first oil inlet, a first oil outlet, a first working oil port and a second working oil port; the speed reduction one-way valve and the damping screw are arranged on an oil way between the first side end cover of the main valve and the oil supply device. And during mold opening brake buffering, the speed reduction one-way valve and the damping screw control the pressure of the first side cavity of the main valve. According to the technical scheme provided by the utility model, the brake deceleration function can be realized in the mold opening process, and meanwhile, the cost is effectively reduced.

The utility model relates to the technical field of double-chamber kiln ash discharging systems, and discloses a novel double-chamber kiln ash discharging system which comprises a double-chamber kiln, a discharging channel, a clean hot air leading-out pipeline and a discharging channel cooling air device. The discharging channel is arranged below the buffer cooling frame and communicates with the outlet end of the buffer cooling frame, the clean hot air leading-out pipeline comprises a high-temperature hot air collecting cover, a medium-temperature hot air recycling branch pipe, an intelligent fan unit and an integrated air volume regulation and control module, and the high-temperature hot air collecting cover is fixedly installed on the inner wall of the double-hearth kiln and located above the buffer cooling frame; the medium-temperature hot air recycling branch pipe is fixedly connected to the rear end of the discharging channel cooling air device, and the intelligent fan set comprises a double-variable-frequency motor and an air pressure sensor in signal connection with the central controller. The comprehensive heat efficiency and the waste heat recovery rate of the system are improved; the material temperature gradient standard deviation is reduced, and the granularity uniformity is improved.

The utility model provides a foldable bridge deck aerial work hanging basket which comprises a first hanging ladder, a second hanging ladder, a bottom frame and a base plate. The lower ends of the first hanging ladder and the second hanging ladder are rotationally connected with the two ends of the bottom frame respectively; a plurality of rotating rods which are longitudinally distributed at equal intervals are rotationally connected to the two sides of the first hanging ladder correspondingly, and the ends, away from the first hanging ladder, of the rotating rods are rotationally connected to one side of the second hanging ladder; a first rotating shaft is arranged at the lower end of the first hanging ladder above the underframe; the base plate is located between the first hanging ladder and the second hanging ladder, and one end of the base plate is rotationally connected with the first rotating shaft. The foldable hanging basket not only can provide a stable and safe working environment for constructors, but also can realize the folding function of the whole hanging basket, is convenient to transport and store, and reduces the occupied space.

A partitioned turbine blade with an oscillating jet cooling structure and its operating method are disclosed, belonging to the fields of energy and power engineering and turbine blade cooling. The blade includes a blade shell, a jet oscillator, a cooling airflow delivery chamber, internal impact holes, external film cooling holes, and turbulence columns. In this invention, the cooling airflow impacts and cools the inner wall of the blade through the impact holes. Utilizing the characteristic of the jet oscillator to generate a large-area high-frequency sweep without moving parts, a single row of jet oscillators is used on the suction side and leading edge of the blade. Considering that the cooling demand on the pressure side is greater than that on the suction side, the pressure side fluid oscillators are arranged in two staggered rows to generate a large-area, full cooling film on the blade surface for blade cooling.

This application relates to the technical field of intelligent airflow control, and in particular to a dynamic optimization method for airflow organization in a clean operating room. Applied to an operating room containing an inner ring main air supply array, an outer ring auxiliary air supply array, and return air louvers, the method includes: when at least a portion of the movement vector points towards the operating table, and the corresponding movement speed is greater than a preset speed threshold and the area shrinkage rate is greater than a preset shrinkage rate threshold, suspending personnel position tracking air supply, marking the low-pressure wake zone, and executing the following: reducing the deflection angle of the guide vanes of the inner ring main air supply array to zero, simultaneously reducing the air supply volume of the outer ring auxiliary air supply array; controlling the outer ring auxiliary air supply array corresponding to the low-pressure wake zone to intercept air supply; increasing the opening of the return air louvers at the wall where each intercepted air supply falls, and decreasing the opening of the return air louvers at other walls. This application proactively abandons tracking through a three-level coordination mechanism, intervening in the flow field phase change conflict caused by transient convergence and dispersion to maintain the cleanliness of the core area.

This invention discloses a method and related equipment for accelerating call detail record (CDR) billing processing in a cloud environment, relating to the field of CDR billing processing technology. The method includes: real-time monitoring of the CDR billing entry directory in a cloud distributed file storage system to obtain CDR files under the directory; for each obtained CDR file, determining whether each file is a small fragmented file to be merged based on its size or the number of CDR records it contains; merging the contents of all small fragmented files into a temporary merged file until the total number of CDR records accumulated in the temporary merged file reaches a preset merge output threshold, at which point adding content to the temporary merged file stops, and the temporary merged file is used as the merged CDR file; and performing billing processing on the merged CDR file. This invention can improve CDR processing efficiency.

The application discloses an air conditioner and belongs to the technical field of air conditioners. The air conditioner comprises: a refrigerant circulation loop, which circulates refrigerant in a loop composed of a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger and a gas-liquid separator; and a controller, which is configured to, in the starting stage and the transition stage of the air conditioner: acquire suction superheat of the compressor, calculate the refrigerant density p in the suction pipe according to the dynamic pressure of the suction port of the compressor, and calculate the suction dryness of the compressor according to the refrigerant property parameters; determine whether the compressor has a liquid strike risk according to the suction superheat and the suction dryness; if the liquid strike risk does not exist, control the opening degree of the expansion valve according to a preset control logic; and if the liquid strike risk exists, control the opening degree of the expansion valve to decrease or control the air conditioner to stop, so that the problem of the compressor liquid strike that is prone to occurring after low-temperature heating sleep starting or after starting after severe defrosting is effectively solved.

The invention relates to an aluminum melt purification powder spraying vehicle in the technical field of smelting equipment. The aluminum melt purification powder spraying vehicle comprises a transfer trolley, a powder storage tank and a powder spraying assembly, the transfer trolley is a trackless flat car and is used for driving the powder storage tank and the powder spraying assembly to move, the powder spraying assembly comprises a telescopic rotating mechanism and a powder spraying pipe, and the powder spraying pipe is connected with a powder outlet pipe of the powder storage tank; the powder storage tank is fixed on the transfer trolley; the telescopic rotating mechanism is connected with the powder spraying pipe and used for driving the powder spraying pipe to horizontally move and rotate, the powder spraying pipe does not need to be manually rotated, the labor intensity is reduced, meanwhile, the requirements for reducing the opening degree and reducing the heat loss of the furnace when the powder spraying pipe enters and exits from the furnace door can be met, and the requirement for the refining agent spraying uniformity is met. The transfer trolley can drive equipment to flexibly move in a smelting workshop, lifting is convenient, the requirement for the manufacturing and installing process is low, and cost is low; the powder spraying pipe can stretch, swing and rotate; the service life is long, the manual labor intensity is low, and the working efficiency is high.

The present application relates to the technical field of electrical control cabinet, specifically relates to an electrical equipment automation control cabinet, aiming at solving the problems of low heat dissipation efficiency and high energy consumption of the existing control cabinet. It includes cabinet body, cabinet door, internal mounting back plate and core control module, the top and bottom of the cabinet are respectively provided with fresh air inlet and heat dissipation port, and a self-adaptive heat dissipation module is also provided. The self-adaptive heat dissipation module includes a heat dissipation seat, a heat dissipation fan, an automatic heat dissipation louver and a temperature sensor distributed in the cabinet. The end of the automatic heat dissipation louver is provided with a permanent magnet rotor, and the heat dissipation seat is provided with a corresponding electromagnet stator. The temperature sensor, the heat dissipation fan and the electromagnet stator are electrically connected with the MCU controller, realizing the double-dimension self-adaptive adjustment of the louver opening degree and the fan rotating speed. The present application improves the heat dissipation efficiency, reduces the energy consumption under low load working condition, and has strong adaptability.

The utility model belongs to the technical field of membrane separation equipment, particularly relates to a self-adaptive pressure stabilizing system of a membrane separation component based on pressure difference feedback, and aims to solve the problem that the pressure is controlled only by the frequency of a fixed valve or pump when the existing system is actually used, and the pressure cannot be controlled when the resistance of the membrane component is changed due to pollution and the like. According to the technical scheme, the membrane separation assembly self-adaptive pressure stabilizing system based on pressure difference feedback comprises a membrane separation assembly body, and the two ends of the membrane separation assembly body are provided with a liquid inlet end and a liquid outlet end respectively; the utility model has the beneficial effects that the integrated controller accurately regulates and controls according to the preset pressure, sends instructions to the variable frequency pump and the electromagnetic valve, maintains the pressure stable, greatly improves the separation efficiency, and reduces the risks of membrane rupture and leakage. The filter screen at the liquid inlet end intercepts impurities, slows down membrane pollution, prolongs the service life of a membrane assembly, guarantees normal operation of other parts, and reduces equipment faults.

This invention discloses a concrete core sample cutting device, belonging to the field of building technology. It mainly includes a receiving cylinder, a fixing sleeve, an inner rod, a guide rod, a cutting wheel, and a support frame. The cutting wheel is rotatably mounted on the support frame. The receiving cylinder has a receiving cavity and a cutting inlet on its outer side. The fixing sleeve is received within the receiving cylinder and is adapted to fit and fix to the end of the core sample. The inner rod is coaxially mounted on the receiving cylinder and can rotate relative to it. One end of the inner rod, passing through the receiving cavity, can connect to the fixing sleeve. A rack is mounted on the support frame, and the inner rod slides along the extension path of the rack on the support frame. A driven gear is mounted on the inner rod. A driver is mounted on the receiving cylinder. The guide rod rotates around the axis of the cutting wheel and is rotatably mounted on the support frame. The receiving cylinder slides along a direction perpendicular to the axis of the cutting wheel and is connected to the guide rod. This concrete core sample cutting device improves operational safety.

The application discloses a construction method of a color steel plate enclosure system of a biosafety protection three-level laboratory, and belongs to the technical field of laboratory construction. The application constructs a three-dimensional model of the laboratory through BIM, presents the positions and directions of equipment and pipelines, carries out simulation analysis on air flow organization through CFD, and obtains air flow direction, speed and pressure distribution data. In the construction process, AR is used for auxiliary positioning and guidance in the construction site, the construction process is carried out based on the optimized construction scheme, the entire laboratory enclosure system is constructed through scientific and reasonable design, material selection, installation and sealing treatment, the leakage and diffusion of pathogenic microorganisms in the laboratory can be effectively prevented, digital virtual construction, factory prefabrication and on-site assembly construction are used, the amount of on-site opening and rework is effectively reduced, the construction cost and construction period are saved, the engineering quality is improved, and the safety performance of the high-level biosafety laboratory is further ensured.

The utility model discloses a distribution device for multiple pouring nozzles, which comprises a sealing component, a pouring head component, a sliding guide component, a pouring nozzle component, a sliding driving mechanism and a lifting mechanism, and the sealing component is arranged in a first mounting hole of a pouring tank; the sliding guide assembly is located in the pouring tank. The pouring nozzle assembly comprises a sliding table and a plurality of pouring nozzles arranged on the sliding table, the sliding table is in sliding fit with the sliding guide assembly, and the pouring nozzles are distributed at intervals in the sliding direction of the sliding table; the sliding driving mechanism is arranged on the pouring tank and can drive the sliding table to slide relative to the sliding guide assembly. The lifting mechanism is arranged on the sealing assembly and can drive the pouring head assembly and the pouring nozzle assembly to move relatively so that the pouring head assembly can be in butt joint with the pouring nozzles, namely, the different pouring nozzles can be in butt joint with the pouring head assembly, and therefore pouring materials can be conveyed, the requirement for application of the multiple pouring nozzles can be met by moving the sliding table, and the production efficiency is improved. And holes in the pouring tank are reduced, so that the vacuum pouring equipment is more stable and reliable.

The application provides a valve stent and a valve prosthesis, the valve stent comprising an outer layer stent, an inner layer stent and at least one buffer part; the outer layer stent is sleeved outside the inner layer stent and is connected with the inner layer stent through the buffer part. The buffer part can effectively reduce the influence of the deformation of the outer layer stent on the opening and closing of the valve leaflet on the inner layer stent, so that the buffer part can significantly weaken or isolate the mutual force between the outer layer stent and the inner layer stent. In addition, the valve stent adopts the design of double-layer stent, which can effectively improve the fatigue resistance of the valve prosthesis, make the valve prosthesis more fit the original tissue, reduce the influence of the valve stent on the ventricular contraction capacity and ensure the stability of the closed valve stent.

The utility model discloses an ecological flow adjusting device of a pumped storage power station. The ecological flow adjusting device comprises a conveying pipeline and an anti-blocking mechanism. The anti-blocking mechanism comprises a mounting seat, a branch pipe, a filter screen, a water suction pump, a water suction pipe, a water drainage pipe, a differential pressure sensor and an electromagnetic valve; the mounting seat is fixedly connected in the conveying pipeline, the filter screen is detachably connected with the mounting seat, and the conveying pipeline is divided into a section close to the upstream and a section close to the downstream by the filter screen; the branch pipe is communicated with the downstream section of the conveying pipeline; the water suction pump is fixed to the outer wall face of the conveying pipeline, and a water inlet and a water outlet of the water suction pump are connected with one end of a water suction pipe and one end of a water drainage pipe respectively; the other end of the water pumping pipe is communicated with the upstream section of the conveying pipeline; the other end of the water draining pipe is communicated with the downstream section of the conveying pipeline; the electromagnetic valves are installed on the branch pipe, the water pumping pipe and the water drainage pipe respectively. Sediment is flushed out of the branch pipe through the anti-blocking mechanism, cleaning of the filter screen is completed, and the situation that water flow conveying is affected due to sediment blocking is avoided.

The application discloses a nitrogen adjusting valve control method, device and system for a blast furnace top gear box, and relates to the technical field of blast furnace ironmaking.If the target parameter is higher than the first preset threshold value, it represents that the air pressure in the gear box far exceeds the requirement of preventing dust and coal gas in the blast furnace from entering the gear box, the opening of the adjusting valve is reduced until the target parameter is lower than the first preset threshold value, waste caused by excessive nitrogen can be avoided, and over-protection of pressure can be avoided.If the target parameter is lower than the second preset threshold value, it represents that the air pressure in the gear box cannot meet the requirement of preventing dust and coal gas in the blast furnace from entering the gear box, the opening of the adjusting valve is increased until the target parameter is higher than the second preset threshold value, the sealing property of the gear box can be improved, dust and coal gas in the blast furnace can be prevented from entering the gear box, and under-protection of pressure can be avoided.

The invention discloses a low-power-consumption circuit of a vehicle gauge level LDO (Low Dropout Regulator), which relates to the technical field of integrated circuits and comprises a power PMOS (P-channel Metal Oxide Semiconductor) tube group power Mos1, a power PMOS tube group power Mos2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an NMOS (N-channel Metal Oxide Semiconductor) tube N1, an NMOS tube N2, an NMOS tube N3, an NMOS tube N4, an NMOS tube N5, an NMOS tube N6, a PMOS tube P1, a PMOS tube P2, a PMOS tube P3, a PMOS tube P4, a depletion type NMOS tube dvt1 and a depletion type NMOS tube dvt2. The invention further discloses the low-power-consumption LDO power supply chip of the vehicle-mounted system. According to the invention, when the chip is used under a small load, the current limiting function is forbidden, so that when the chip is used under the small load, the opening of internal modules of the chip is reduced, part of internal functional modules are closed, and the power consumption of the vehicle-gauge-level LDO is reduced.