153results about How to "Automatic pressure adjustment" patented technology

The invention discloses a device and a method for detecting a subsea valve in a laboratory. The device for detecting the subsea valve is connected with the subsea valve, and comprises an air source, an air source switch, an air source triplet, a three-position four-way manual valve, a water groove, a pressure reducing valve, a two-way manual valve, an air inlet pipeline, an air outlet pipeline, a bottom valve pressure test tool and a pressure test cover; a flange plate at the bending end of the subsea valve is connected with the bottom valve pressure test tool by a sealing pad, the centre of the bottom valve pressure test tool is connected with a first pressure inlet, a flange plate at the cylinder end of the subsea valve is connected with the pressure test cover by a bolt and the sealing pad, and the pressure test cover is connected with a second pressure inlet. The device can detect the tightness of the cylinder of the subsea valve, the tightness and the reverse tightness of the structure of the subsea valve, and has advantages of simple structure, convenient operation, easy observation, reasonable arrangement and convenient maintenance. The pressure reducing valve in the gas circuit can automatically adjust pressure in an air path, prevent the excessive opening pressure of the subsea valve and reduce the impact to the subsea valve.

The invention relates to the coke oven control technical field, in particular to a coke oven temperature and pressure automatic monitoring oven control system, which is characterized by comprising a temperature data detection module, a pressure data detection module, a computer operation station and a pressure control adjusting execution mechanism, wherein a real-time dynamic database is arranged inside the computer operation station, the computer operation station is respectively connected with the temperature data detection module, the pressure data detection module and the pressure control adjusting execution mechanism, the computer operation station executes a coke oven online instruction control strategy and can automatically control and adjust the coal gas pressure and the flue suction force and can provide an offline instruction adjustment scheme. Compared with the prior art, the coke oven temperature and pressure automatic monitoring oven control system has beneficial effects that: a great amount of coke oven operation personnel can be saved, the labor intensity of the operation personnel can be alleviated, the operation time in the worse environment can be reduced, the operation personnel can concentrate on general control of the coke oven technical process, and an important significance on improving the coke oven quality, the operation efficiency and the operation security can be realized.

The invention discloses an automatic distribution method and system for natural gas. The system comprises a station controller, a plurality of station control system PLCs and a plurality of automaticdistribution mainframes so as to correspond to different gas supply areas, and is characterized in that the station controller sends operation parameters input from an operation interface to the station control system PLCs; the PLCs send the operation parameters to the automatic distribution mainframes; target values are returned to the station control system PLCs after relevant calculation is carried out through the automatic distribution mainframes; and the PLCs control corresponding valves to carry out gas delivery control.

The invention relates to an intelligent airplane ice-removing spraying system, which is characterized in that the system comprises a movable type ice-removing mechanical arm, an intelligent detection system, a command and control system, a storing and recycling-processing system of ice-removing fluid, and a heating and supplying system of the ice-removing fluid. The command and control system is respectively connected with the intelligent detection system, the storing and recycling-processing system of the ice-removing fluid and the heating and supplying system of the ice-removing fluid; the heating and supplying system of the ice-removing fluid is connected with the storing and recycling-processing system of the ice-removing fluid; and the heating and supplying system of the ice-removing fluid is connected with the movable type ice-removing mechanical arm. The system of the invention establishes an ice-removing operating area for special purpose in an airport, controls the ice-removing mechanical arm on a track to spray the ice-removing fluid for airplanes, automatically adjusts the position and height of the ice-removing mechanical arm according to different machine types, and automatically adjusts the pressure and flow rate of spraying so as to achieve the best spraying effect, the efficiency of the ice-removing assignment is greatly increased, at the same time, multiple-time recycling of the ice-removing fluid is realized through recycling-processing for the ice-removing fluid, so that the ice-removing cost is reduced greatly, and recycling-processing for the ice-removing fluid is beneficial for the environmental protection of the airport.

The invention relates to an automatic control system and method for underground annulus pressure of deep water surface layer drilling. The system comprises three pipelines which are respectively arranged in a heavy slurry pond, a seawater pond and a treating agent pond, wherein each pipeline is connected with the input end of a mixer, the output end of the mixer is connected with an outflow pipeline, and the outflow pipeline is connected with a pup joint of a seabed underground PWD. Each pipeline is internally provided with a power pump, a regulating valve and an inlet flow meter, and the outflow pipeline is internally provided with an outlet flow meter. The underground PWD is connected with an MWD, a signal receiving device of the MWD is in communication connection with a remote computer control system, the remote computer control system is connected with a logging system and a PLC (Programmable Logic Controller) control system through a data bus, and the PLC control system is connected with the regulating valve, the inlet flow meter, the mixer and the outlet flow meter through data. According to the invention, a secondary microcomputer control system is created through the remote computer control system and the PLC control system, so that the mixing proportion of heavy slurry and seawater is automatically regulated, and drilling slurry with required density and flow is input to the underground to carry out underground pressure balance regulation to further realize safe drilling.

The invention discloses a snore detecting method and system. The snore detecting method and system overcome the defect that in the prior art, the accuracy of detection of snores generated when people sleep is low. The snore detecting method comprises the steps that breathing signals are detected continuously at the position of an air outlet of a breathing machine; a breathing vibration threshold value is obtained according to the vibration amplitude values of the continuously-detected breathing signals; when the vibration amplitude value of the breathing signal detected mostrecently is larger than the breathing vibration threshold value, it is confirmed that snores are generated during breathing corresponding to the breathing signal detected most recently. According to the snore detecting method and system, equipment obtaining difficulty is lowered, development cost is reduced, and snore detection accuracy is improved.

The invention provides a cloth cutting device. The cloth cutting device comprises a rack, an adjustable guide roller mechanism, a cutting roller component, a cutting device, a first rolling device and a second rolling device, wherein an adjusting device is arranged on each of two sides of the adjustable guide roller mechanism; a guide roller component is mounted between the adjusting devices; a plurality of tool aprons are mounted on the cutting roller component; the cutting device is arranged above the cutting roller component; a driving mechanism is arranged on each of two sides of the cutting device; a mounting support is mounted between the driving mechanisms; a plurality of cutter components are mounted on the mounting support; the guide roller component, the cutting roller component, the first rolling device and the second rolling device are sequentially arranged on the rack in the cloth moving direction; and a buffer spring is arranged on each cutter component. The pressure between hot cutters and cutter rests can be automatically adjusted, so that cutter abrasion is reduced, cloth is guaranteed by a compression roller component to be always clung to a wind-up roller component, and accordingly, even and no-fold winding is ensured.

The invention discloses an automatic hot-pressing overlock machine and relates to the field of precision mechanical equipment. The automatic hot-pressing overlock machine comprises an upper mold device, a transmission device, a lower mold device and a baking device. The upper mold device is provided with a clamping mechanism for clamping an automobile armrest base plate. The lower mold device is provided with positioning needles for positioning and tightening a surface sheet. The baking device stretches to the part between the lower mold device and the upper mold device and meanwhile bakes and fuses solid glue on the surface sheet and solid glue on automobile armrest base plate. The transmission device drives the upper mold device to descend and to be pressed to the lower mold device so that the automobile armrest base plate can be attached to the surface sheet. The lower mold device is further provided with an overlock mechanism used for wrapping the surface sheet onto the overlock mechanism on the automobile armrest base plate. The automatic hot-pressing overlock machine can be adjusted according to different process parameters, and the problem of product hot-pressing overlaying with different configuration requirements is solved. Moreover, by means of double faces of baking and heating, the hot-pressing effect is better; and meanwhile, a positioning structure and an aligning structure on a bottom mold can accurately position a workpiece, and the working precision is guaranteed.

The invention discloses an off-road vehicle tire central inflating and deflating system based on slip ratio control and a control method thereof. The off-road vehicle tire central inflating and deflating system comprises a slip ratio obtaining system and a tire central inflating and deflating system. The slip ratio obtaining system obtains the slip ratio and compares the slip ratio with a preset slip ratio range value, and inflating and deflating of tires are adjusted in this way. The tire central inflating and deflating system comprises an air supply and storage device, a rotary sealing device, tire inflating / deflating valves and corresponding pipelines. The slip ratio obtaining system comprises a signal collecting device and a control and display device. The control method of the off-road vehicle tire central inflating and deflating system mainly comprises a manual control method and an electronic control method. According to the off-road vehicle tire central inflating and deflatingsystem based on slip ratio control and the control method thereof, manual control or electronic control can be selected according to the intension of an operation driver, meanwhile, timely control over inflating and deflating operation of all the tires can be achieved according to the road surface condition in the actual traveling process of a vehicle, and the traction property and lateral stability of the vehicle in different terrains are improved.

A method for manufacturing a battery electrode plate is provided with a step of intermittently transferring a strip-shaped electrode plate material (1) in a length direction by a prescribed quantity to be aligned and stopping the material; and a step of compacting the electrode plate material (1) by pressing a cutting section of the material from the top and the bottom, between an upper stripper (12) and an upper cutting metal die (11) sliding each other, and a lower stripper (14) and a lower cutting metal die (13) sliding each other, and cutting the compacted section by sliding cutting blade sections (11a, 13a) of the upper and lower cutting metal dies (11, 13) each other. Thus, the electrode plate material is cut while suppressing generation of a large burr, which causes short-circuit failure between the electrode plates, without deteriorating productivity nor increasing cost, and the battery electrode plate is obtained.

The invention discloses an electric vehicles charging system applicable to various types of stereo garages. The electric vehicle charging system comprises a portable intelligent charging pile and a charging power supply automatic docking device, wherein the charging power supply automatic docking device is matched with the portable intelligent charging pile to be used, the portable intelligent charging pile can be made into a direct current charging pile or an alternating current charging pile, and the portable intelligent charging pile can be placed at the tail of an electric vehicle entering a garage, moves together with the electric vehicle and is finally placed in a parking space; the charging power supply automatic docking device comprises a device shell, a power supply docking device and a socket and plug automatic fault-tolerant mechanical device; and when the electric vehicle is moved to a designated parking space by a stereo garage carrier, the portable intelligent charging pile is also dropped into the designated parking space and completes docking with the charging power supply automatic docking device on the parking space, and charging is achieved. According to electric vehicles charging system applicable to various types of stereo garages, the electric vehicles of different power types and different power can be conveniently and effectively charged in the stereo garages of different types in a comb-type exchange mode, and the utilization rate of the electric vehicles in the stereo garages is increased.

The invention discloses an efficient energy-saving marine pump which comprises a base. A first turbine shell and a second turbine shell are fixedly arranged above the base. The two sides of the firstturbine shell and the second turbine shell are provided with end covers correspondingly, through holes are formed in the middles of the end covers, impellers are arranged in the first turbine shell and the second turbine shell correspondingly, rotating shafts are arranged in the middles of the impellers, the rotating shafts of the impellers inside the first turbine shell and the second turbine shell are connected through an electromagnetic clutch, the rotating shaft of the impeller inside the second turbine shell is connected with an output shaft of a motor through a coupler, and the motor isfixedly installed to the base through a motor installation base. According to the efficient energy-saving marine pump, the water pumping speed is adjusted by adjusting the number of the working impellers, water drainage pressure is improved by adding an energy storage tank, remote ejection is achieved, and energy saving and high efficiency are achieved by adjusting the power of the motor.

The invention provides an air tightness detection system applied to new energy battery packs. The air tightness detection system comprises an air source FRL (air filter, pressure reducing valve and atomized lubricator), a pressure regulating valve, a pressure switch, a proportional valve, an electromagnetic valve, a vacuum generator, a one-way valve, a pressure sensor and a control device which are connected in sequence. The system is a precise battery pack air tightness detection system, and the precision reaches 0.01 Mpa. Precise control is conducted from an air source to guarantee the stability of the system, and imported precise components are selected to guarantee precise control over the air source. The precise proportional valve allows the pressure value to be directly set on a control system and also has the advantage of automatically adjusting the pressure of the air source. A small pressure sensor collects air pressure data in real time and sends the air pressure data to a software system, a visual 'T (time)-F (pressure)' analysis chart is formed in the saving process, the air tightness of each battery pack can be conveniently analyzed, and meanwhile the air tightness detection system has traceability.

The invention belongs to the technical field of aircraft and airspace engine testing, and particularly relates to a high-flow liquid medium combined supply system. The system comprises a pressurization unit, a storage unit and a supply unit. The pressurization unit communicates with the storage unit and is used for carrying out pressurization on the storage unit. The storage unit is used for storing media. The storage unit and the supply unit communicate with each other to be used for providing the media for multiple terminals. According to the improvement of the high-flow liquid medium combined supply system, the supply unit is composed of two or more branched pipelines, the lengths of connecting pipelines between the branched pipelines are consistent, and the lengths of the branched pipelines are consistent. The system can carry out combined supply on the multiple terminals working at the same time, it is guaranteed that the flow and pressure of each terminal are stable when the multiple terminals work at the same time, and it is ensured that the working condition of each terminal can meet the requirement of the rated working condition.

The invention discloses an adjusting mechanism capable of adjusting buffering power for a hammer crusher. The adjusting mechanism comprises a material receiving box, a crushing box, a belt wheel, a transmission roller and a crushing device, wherein the crushing box is arranged at the upper part of the material receiving box; a transmission roller is fixedly connected to the outer side of the transmission shaft, a buffer force adjusting device is fixedly connected to the outer side of the transmission roller, and the buffer force adjusting device and the crushing device are all positioned in acrushing roller; the buffer force adjusting device comprises fixing sleeve pipes, wherein pressure buffer springs are arranged at the bottoms of the inner sides of the fixing sleeve pipe, spherical sliding blocks are arranged on the upper parts of the pressure buffer springs, the upper end surfaces of the sliding blocks are fixedly connected to telescopic rods, and shear thickening liquids are further filled in the fixing sleeve pipes; and side an edge anti-leakage plate is arranged on the two sides of the crushing roller, and a planetary gear is arranged at the center of the side edge anti-leakage plate. The adjusting mechanism has the advantages that the crushing effect is good, crushing is uniform, blockage is not prone to occur, the pressure can be automatically adjusted, and the service life of the device can be prolonged.

The invention discloses an explosion-proof positive pressure biological fermentation tank, comprising a tank body, a support leg is fixedly connected to the bottom of the tank body, a motor support rod is fixedly connected to one side of the support leg, and the motor support rod is One end is fixedly connected with a motor, the output shaft of the motor is fixedly connected with a rotating shaft through a coupling, one end of the rotating shaft penetrates and extends into the interior of the tank, the surface of the rotating shaft is fixedly connected with a bearing, and the surface of the rotating shaft is fixedly connected with a blade, the tank The surface of the body is provided with a feed port, one end of the feed port is screwed with a feed port sealing plug, and the surface of the tank body is provided with a discharge port. In the explosion-proof positive pressure biological fermentation tank, the surface of the adjustment block is convex. When the internal pressure of the tank is too large, the pressure will push the adjustment block on the inner wall of the adjustment port, and the resulting gap is conducive to the release of the pressure in the tank, so as to solve the problem. The problem of damage to the fermenter caused by the air pressure generated during fermentation in the fermenter is solved.

The invention provides a battery box system with the temperature automatically adjusted. The system comprises a cooling loop and a heating loop; a vehicle controller adjusts the temperature of a battery box through a low temperature controller and a high temperature controller according to the actual temperature of the battery box so that the temperature of the battery box can be kept within a settemperature range; meanwhile, the system monitors the working state of each component and reminds related personnel in time when an abnormality or fault occurs, so that it is guranateed that a battery pack, especially an electric vehicle lithium power battery pack, can work safely and reliably, and the service life of the battery pack can be prolonged.

The invention discloses an air conditioning system and an air conditioning unit as well as an oil return control system and an oil return control method thereof. The air conditioning unit comprises a plurality of compressors, wherein the plurality of compressors are installed in parallel, oil balance tubes are respectively connected between oil tanks of any two compressors, and a gas-liquid separator of the air conditioning unit is used for making oil return to each compressor through a plurality of oil return pipelines which are correspondingly connected with the plurality of compressors. The oil return control system comprises a plurality of pressure detection devices, a plurality of switching devices and a processing device, wherein the plurality of pressure detection devices are correspondingly arranged on air suction pipelines or oil tanks of the plurality of compressors respectively, the pressure detection devices are used for detecting pressure applied to the air suction pipelines or the oil tanks of the corresponding compressors, the plurality of switching devices are correspondingly arranged on of the multiple oil return pipelines respectively, and the processing device is used for controlling the opening time of the plurality of switching devices according to pressure values detected by the plurality of pressure detection devices. According to the oil return control system, the oil return balance of each compressor can be preferably guaranteed, and the operating reliability of the air conditioning unit can be increased.

The invention discloses a cleaning vehicle for a tower-type solar thermal power generation heliostat. The cleaning vehicle comprises a vehicle body, a cleaning device, a mechanical arm, an adjustment device, an auxiliary engine, a water tank, a water path and an oil path, wherein the cleaning device is mounted on the adjustment device, and the adjustment device is fixedly mounted at the tail end of the mechanical arm; the mechanical arm is mounted between the cab of the vehicle body and the auxiliary engine; the water tank is fixedly mounted at the rear end of the vehicle body; the auxiliary engine is used for supplying power for an oil pump in the oil path and a water pump in the water path and is mounted between the mechanical arm and the water tank; the water path is used for connecting the water tank with the cleaning device; and the pressure and the flow rate of the oil path can be adjusted to control actions of the mechanical arm, the adjustment device and the cleaning device.

The invention provides an active sowing depth and compaction force adjusting system for a non-tillage planter, which comprises a monitoring system and a control system, wherein the monitoring system comprises a sowing depth detection mechanism, a sowing depth prediction model, a pressure prediction model and a compaction force detection mechanism, wherein the control system comprises a sowing depth control model, a downward pressure control model, a compaction force control model, a downward pressure adjusting mechanism, a depth limiting wheel height adjusting mechanism and a compaction force adjusting mechanism; the monitoring system is used for calculating and processing data acquired by the sowing depth monitoring mechanism, acquiring the sowing operation depth during sowing operation through the sowing depth prediction model, acquiring the downward pressure of a sowing unit and the compaction force of a compaction wheel through the pressure prediction model, and realizing the adjustment of the compaction force through the compaction force adjusting mechanism; and the downward pressure adjusting mechanism, the depth limiting wheel height adjusting mechanism and the compaction force adjusting mechanism cooperate to ensure that the sowing depth of the no-tillage planter and the compaction force are stable, and meanwhile the downward pressure of the sowing unit is adjusted.

The invention provides a device for generating hydrogen through powder hydrolysis, which has the advantages that the weight of the device is reduced, the complexity of the device is decreased, the practicability and the reliability of the device are increased, and the pressure, flow and stability of hydrogen supply are guaranteed; and the dryness and the purity of the generated hydrogen are guaranteed, and the service life of a drying filter can be greatly prolonged. The device for generating hydrogen through powder hydrolysis comprises a powder raw material solution tank and a reaction tank. Raw material solution is contained in the powder raw material solution tank. Specifically, the raw material solution is formed by hydrogen generation powder which is dissolved in water. The device for generating hydrogen through powder hydrolysis is characterized in that the lower part of the powder raw material solution tank is connected with an upper inlet of the reaction tank through a liquid pipeline, catalyst is contained in the reaction tank, an upper outlet of the reaction tank is communicated to an inlet of a porous-medium filter head of a water filtration cooling tank through an outlet pipeline, liquid water is contained in the water filtration cooling tank, the porous-medium filter head is immersed in the liquid water, and an upper outlet of the water filtration cooling tank is communicated to a lower inlet of the drying filter through a pipeline.

The invention discloses a juice extractor with a cleaning device, which comprises a feeding mechanism, an cracking mechanism, a filtering screen, a shell and the cleaning device, wherein an inner cavity is defined by the shell, the cleaning device is used for clearing fruit residues on the filtering screen, the feeding mechanism comprises an inlet and an outlet, the cracking mechanism is arranged at the outlet, the inner cavity of the shell is divided into a cracking cavity and a juice cavity by the filtering screen, the cracking cavity and the outlet are communicated, the shell comprises a cover body, the cleaning device is arranged on the cover body and extends into the cracking cavity, the cleaning device comprises a scratching piece and a driving part capable of driving the scratching piece to move up and down, the scratching piece comprises a cleaning part, and the cleaning part can be adhered to the filtering screen when the driving part moves downwards. In the invention, since the cleaning device comprises the scratching piece and the driving part capable of driving the scratching piece to move up and down, the filtering screen can be cleaned just by pressing the driving part when extracting juice, the structure is simple, and the operating method is convenient; and the cleaning device uses the scratching piece for replacing a brush, the washing is convenient, the cleaning is easy, the contact area of a scratching knife and the filtering screen is small, the filtering screen is easy to clean, and thus the juice yield is improved.

A thickened oil thermal recovery decompression method is suitable for thickened oil thermal recovery of mesohigh steam boilers and mesolow steam boilers, and a heat source for thermal recovery can supply steam through a decompression device. A decompression system of the thermal recovery decompression device is composed of a high-pressure area decompression valve and a medium-pressure area secondary decompression valve, and due to the two-stage decompression structure, the thickened oil thermal recovery decompression device is suitable for various work conditions of thickened oil thermal recovery. Mesohigh steam output pipes which are controlled by the valve and parallelly connected are arranged behind the high-pressure steam decompression valve, steam discharging pipelines for enabling steam of the mesohigh steam boilers to pass are arranged on the high-pressure steam decompression valve or the medium-pressure area secondary decompression valve, and the thickened oil thermal recovery decompression device can be steam driven or low-pressure steam driven or hot water driven. The thickened oil thermal recovery decompression device can monitor steam pressure in the steam pipelines at proper time, is convenient to operate, and can ensure safety of steam filling pipelines and steam utilization devices by arranging two check valves on steam inlet portions of the steam pipelines and placing a check valve on a steam discharging port portion.

The invention relates to the technical field of valves and discloses an intelligent pressure reducing valve integrating power generation, data acquisition and automatic control functions as well as acontrol method. The intelligent pressure reducing valve comprises a power generation device, a data acquisition assembly, a data processing device and a display terminal; the power generation device comprises a power generation assembly perpendicular to the flow direction of a fluid and a battery assembly arranged outside a valve body; the power generation assembly comprises a power generation unit and a rotating wheel; the rotating wheel is connected with a rotor of the power generation unit through a rotating shaft; the rotating wheel comprises blades, an upper base and a lower base; the data acquisition assembly is arranged before the valve body and / or in the valve body and / or behind the valve body and is used for acquiring parameters of a medium in the valve body in real time and transmitting the parameters to the data processing device and the display terminal; and the data processing device performs corresponding operations on an actuator according to the real-time parameters provided by the data acquisition assembly. The intelligent pressure reducing valve can generate power spontaneously, has the stable power generation performance and has data acquisition, processing and displaying functions.

The invention relates to an oil steam zero-discharge oil storage tank device. The oil storage tank device comprises at least one oil storage tank; an oil steam huff-puff interface and a condensed oil recovery interface are arranged at the upper part or the top of the oil storage tank; a liquid oil exporting interface is arranged at the lower part or the bottom of the oil storage tank; an oil steam huff-puff compensator is arranged on one side of the oil storage tank; an oil steam breathing tube interface arranged on the oil steam huff-puff compensator is communicated with the oil steam huff-puff interface through an oil steam pipeline and communicated with a purified gas outlet of an oil gas separator through a purified gas pipeline; an oil steam importing interface is arranged at the central part of the oil gas separator; a condensed oil exporting interface arranged at the bottom of the oil gas separator is communicated with the condensed oil recovery interface through a condensed oil recovery pipeline; an oil delivery pump is arranged in the condensed oil recovery pipeline; and the volume of the oil steam huff-puff compensator is automatically adjusted according to the throughout of oil steam.

The invention discloses a variable-frequency speed regulation constant-pressure water supply control system. The system comprises an industrial personal computer, a PLC controller, a frequency converter, a water pump valve main circuit, a sensing module, a first water pump motor and a second water pump motor, wherein the industrial personal computer is connected with the PLC controller, the PLC controller is correspondingly connected with the frequency converter, the sensing module and the water pump valve main circuit, and the frequency converter is connected with the first water pump motor and the second water pump motor through a water pump switching circuit; and the frequency converter feeds back the motor frequency signal to the PLC controller, the sensing module samples the pipe network pressure signal to be fed back to the PLC controller, and the PID module in the PLC controller calculates according to the motor frequency signal and the pipe network pressure signal and sends outa control signal to control the operation state of the first water pump motor and the second water pump motor. According to the system, the rotating speed of the water pump motor and the input and exit of the multiple motors are automatically adjusted, the pressure of the pipe network is kept at a constant pressure set value, accidents are effectively prevented from being overlarge, and energy issaved.

The invention relates to a method for controlling the steam supply pressure of a heat supply network of a thermal power plant. The method includes the following steps that 1, a main control heat supply unit pipeline and an auxiliary control heat supply unit pipeline of a branch steam cylinder in a steam supply system of the heat supply network of the thermal power plant are set and connected in parallel, the main control heat supply unit pipeline is provided with a main control adjusting valve, and the auxiliary control heat supply unit pipeline is provided with an auxiliary control adjustingvalve; 2, a first opening degree limit value and a second opening degree limit value of the main control adjusting valve are set to be A% and C% respectively, and a third second opening degree limit value of the auxiliary control adjusting valve is set to be B%. The control method combining main control with auxiliary control is used for controlling the opening degree of the main control adjustingvalve and the opening degree of the auxiliary control adjusting valve, and the pressure of the branch steam cylinder is controlled. Compared with the prior art, the method has the advantage that low-flow erosion is prevented, automatic control is achieved, operation modes are flexible, and the stability is improved.

The invention discloses a hazardous fluid pipe pressure-controlling temperature-reducing valve device which comprises a valve body, a sensor assembly, a pressure reducing device, a temperature reducing temperature and a reflowing device. The sensor assembly is arranged on the valve body; the pressure reducing device is arranged at one end of a water outlet of the valve body; the temperature reducing temperature is arranged on a water outlet pipe and close to the pressure reducing device; the reflowing device is arranged in a liquid outlet of the pressure reducing device; the pressure reducingdevice comprises a special-shaped wall, the liquid outlet, a pressure reducing body and a limiting groove; the reflowing device comprises a guide pillar; one end of the guide pillar and a plunger arefixedly connected into the liquid outlet; and the other end of the guide pillar penetrates through a guide sleeve on a sealed block and stretches out to the outer side of the liquid outlet so as to befixedly connected with a block body. According to the hazardous fluid pipe pressure-controlling temperature-reducing valve device provided by the invention, the pressure intensity can be automatically controlled, the fluid temperature is adjusted, the energy is saved, and the occurrence of the phenomenon that a hazardous and polluted fluid leaks to pollute the environment and affect the human body health can be effectively prevented.

The invention belongs to the field of environment-friendly equipment and in particular relates to an electrostatic dust collection system of a movable tripper car. The system comprises a power supply part, a movable tripper car (1), a head dust collection hood (2), a charging conduit (3), a silo seal hood (5) and a material conveying mechanism (4), wherein the material conveying mechanism (4) is arranged on the movable tripper car (1); the head dust collection hood (2) is fixedly connected with the charging conduit (3); the discharge end of the charging conduit (3) is communicated with the silo feeding end; a dust airflow return channel (6) is arranged between the silo seal hood (5) and the charging conduit (3); the port of the dust airflow return channel (6) is communicated with a silo and the charging conduit (3) respectively; an electrostatic dust collection terminal is arranged in the silo seal hood (5); and the signal output end of the power supply part is connected with the signal input end of the electrostatic dust collection terminal. The system can be configured in multiple points, has an ideal dust collection effect, and can be automatically controlled.