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31results about How to "Reduce inspection and maintenance costs" patented technology

Engine speed control system and engineering machine

The invention discloses an engine speed control system and an engineering machine. The engine speed control system comprises an acquisition conversion unit, a calibration unit and a calculation transmitting unit. The acquisition conversion unit is used for acquiring signals about statuses of an accelerator pedal and converting the signals into digital signals, the signal about the status that the accelerator is not stepped corresponds to a first digital signal, and the signal about the status that the accelerator pedal is full stepped corresponds to a second digital signal. The calibration unit is used for subjecting the digital signals obtained by the acquisition conversion unit to data acquisition with engine speed, the first digital signal corresponds to idle speed, and the second digital signal corresponds to maximum adjustable speed. The calculation transmitting unit is used for calculating the corresponding engine control speed according to the current digital signal obtained by the acquisition conversion unit and transmitting the engine control speed to an engine electro-control unit. By the use of the engine speed control system, speed fluctuation due to the fact that analog signals are interfered can be avoided, precision in controlling engine speed can be improved and cost in check and maintenance of the accelerator pedal can be reduced.
Owner:SANY HEAVY IND CO LTD (CN)

Bridge inspection device for guardrail robot

The invention discloses a bridge inspection device for a guardrail robot, and relates to the technical field of automatic bridge detection. The bridge inspection device comprises a traveling car; thetraveling car comprises a rack; two traveling wheels are rotationally connected between the two side walls of the rack through rotating shafts; a driven wheel is fixedly connected with the peripheralsurface of the rotating shaft of one traveling wheel; an electrical cabinet is fixedly connected to the outer side wall of the rack; a motor is fixedly connected into the electrical cabinet; an outputshaft of the motor penetrates through the side wall of the rack, and is fixedly connected with a driving wheel in transmission connection with the driven wheels; a rectangular fixing frame is fixed to the upper surface of the rack; telescopic rods are fixedly connected to one end of the rectangular fixing frame side by side; and a monitor ball is fixedly connected with the lower ends of the two telescopic rods through a mounting plate. The traveling car is arranged, and is connected with the monitor ball positioned on the outer side of a bridge to travel along the bridge, and the side surfaceand the lower surface of the bridge are inspected and detected by the monitor ball, so that the problems that existing bridge inspection is inconvenient, and the inspection efficiency is low are solved.
Owner:合肥德泰科通测控技术有限公司 +1

Modified aqueous paint coating process for oil tank for petroleum cave depot/earthing storeroom

The invention discloses a modified aqueous paint coating process for an oil tank for a petroleum cave depot / an earthing storeroom. The process comprises the following operating steps of: (1) surface treatment before steel product coating; (2) environmental control; (3) coating construction; and (4) quality control. The invention formulates the coating process suitable for coating the oil tank in the petroleum cave depot / earthing storeroom with the modified aqueous paint. According to the process disclosed by the invention, the modified aqueous paint can be uniformly sprayed to the wall surface of a storage tank to satisfy the demand in the field of petroleum, so that the aqueous paint is in full contact with the oil tank. Moreover, the paint will not fall off from the oil tank, so that the coating quality is guaranteed, and the problem that the oil tank is rusted as an existing aqueous paint spraying method cannot achieve the using demand to lead to fall-off of the aqueous paint is solved.
Owner:TIANJIN ZHONGDE ENG DESIGN

Brillouin distributed optical fiber sensing based structural joint monitoring device

A Brillouin distributed optical fiber sensing based structural joint monitoring device is characterized by comprising steel plate bases (9), a linear steel sheet (5) and an L-shaped steel sheet (8) are mounted on each steel plate base (9), a pulley (6) is mounted at each of a suspension arm end of each linear steel sheet (5) and a corner end of each L-shaped steel sheet (8), an optical fiber (1) for stretching detection is wound on the two corresponding pulleys (6) at the suspension arm ends of the linear steel sheets (5) on two sides of a structural joint, an optical fiber (2) for contracting detection is wound on the two corresponding pulleys (6) at the corner ends of the L-shaped steel sheets (8) on two sides of the structural joint, an optical fiber (3) for temperature compensation detection is connected between the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection, and each of the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection is connected with a Brillouin distributed optical fiber demodulating system through a respective connecting optical fiber (4). The Brillouin distributed optical fiber sensing based structural joint monitoring device is capable of monitoring the stretching quantity and the closing quantity of the structural joint, achieves temperature self compensation and effectively overcomes the shortcomings when the optical fibers are simply laid.
Owner:无锡苏积传感科技有限公司

Online monitoring system for oil seal leakage of mining reducer and online monitoring method

ActiveCN109708822ARealize online monitoringTimely and accurate detection of oil leakage faultsMeasurement of fluid loss/gain rateData informationMonitoring system
The invention, which belongs to the technical field of mining machinery and equipment, discloses an online monitoring system for oil seal leakage of a mining reducer and an online monitoring method. The online monitoring system comprises an oil collecting device, a detecting device and a central controller. The oil collecting device is used for collecting sealed oil leaked by a reducer. The detecting device detects and outputs oil amount data information of the sealed oil collected by the oil collecting device. The central controller receives the oil amount data information outputted by the detecting device and carries out data analysis and processing. Besides, the online monitoring method uses the online monitoring system. Therefore, a problem that the operation can not distinguish the sealed oil leaked conventionally from sealed oil leaked after sealing failure is solved. Meanwhile, the oil amount and the oil amount changing rate of the collected sealed oil are detected to provide ascientific data support for determining the oil leakage fault of the reducer; on-line monitoring of the oil leakage fault of the reducer is realized; and the operator can discover the oil leakage fault of the reducer timely and accurately.
Owner:NINGXIA TIANDI BENNIU IND GRP +1

Intelligent shared charging base station of mobile phone

The invention provides an intelligent shared charging base station of a mobile phone. The intelligent shared charging base station comprises a charging box, wherein the charging box comprises a box body, and an opening is formed in the box body; a shielding door component used for shielding and blocking the opening is arranged at the opening; a charging plug component which is movably arranged isarranged in the box body; a power driving device used for driving the shielding door component to be mutually switched between an open state and a shielding state or driving the charging plug component to be mutually switched between an extending state and a retraction state is arranged in the box body; a shielding transmission mechanism is arranged between the power driving device and the shielding door component, and a lifting control mechanism is arranged between the power driving device and the charging plug component; a controller used for controlling the running process of the power driving device is further arranged in the box body; the shielding door component comprises two shielding doors which are movably arranged, wherein the two shielding doors are symmetrically arranged in theopening direction of the opening; and the two shielding doors are matched with each other and are matched with the opening and are used for shielding and plugging the opening.
Owner:王艳

Method for cooperatively treating nitrobenzene wastewater by coal water slurry technology

The invention discloses a method for cooperatively treating nitrobenzene wastewater by a coal water slurry technology, which comprises the following steps: deoxidizing nitrobenzene wastewater, reacting iron with nitrite in the nitrobenzene wastewater, and preparing coal water slurry from the reacted nitrobenzene wastewater, coal and an additive. The invention provides a corrosion control method from the aspect of process, corrosion causes are eliminated, non-planned shutdown caused by corrosion problems is reduced, excessive investment cost of material resources, manpower, financial resources and the like of enterprises is avoided, safe, stable and long-period operation of a coal gasification device is guaranteed, and meanwhile, water resource saving and wastewater resource utilization capabilities are stably improved.
Owner:CHINA PETROLEUM & CHEM CORP +1

Immersive interactive software system for power station boiler transfer equipment based on a virtual environment technology

The invention discloses a set of immersive interactive software system for power station boiler transfer equipment based on a virtual environment technology, which relates to the technical field of virtual environments and comprises a three-dimensional virtual visualization system which comprises a three-dimensional virtual environment, model animation simulation, three-dimensional data visualization, interactive behaviors and information description. The three-dimensional virtual environment is used for performing real-time dynamic simulation on thermal power plant equipment, natural environment and motion simulation; according to the invention, the virtual reality technology is applied to actual production condition monitoring and analysis result processing for large-scale complex equipment such as the boiler auxiliary machine, so that the product model and data perceptibility can be increased, the degree of freedom of product development can be enhanced, and higher-level information details can be obtained; non-specialists without related technical backgrounds can understand the method more easily; the method has a very wide application prospect in the fields of virtual simulation training, application research and the like due to better immersion and higher-level information details.
Owner:HUANENG CHAOHU POWER GENERATION

Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system

A Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system comprises a deflection / subsidence physical quantity conversion portion based on the principle of communicating vessels, a physical parameter sensing portion based on the Brillouin distributed optical fiber sensing technology and a deflection / subsidence evaluation system, and is specifically characterized in that the liquid level in an oil tank is kept at a certain height, oil is delivered to sensing vessels fixed on a measured structure through an oil pressure header pipe and branch pipes, an optical fiber is wound through pulleys and fixed on a piston and a bottom plate in each vessel, and when the deflection / subsidence of a measured point is increased, the strain of each corresponding optical fiber is increased, an internal free optical fiber section is just influenced by the temperature and can implement temperature compensation for the other optical fibers, the Brillouin distributed optical fiber sensing technology is used for strain and temperature sensing, and the evaluation system evaluates deflection / subsidence finally. The Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system is flexible to arrange and capable of achieving a great quantity of series connection and suitable for long-term health monitoring of large infrastructures.
Owner:无锡苏积传感科技有限公司

Mechanized fully mechanized mining system for non-coal mine

The invention provides a mechanized fully mechanized mining system for a non-coal mine, and belongs to the technical field of non-coal mine mining equipment. The mechanized fully mechanized mining system involves an ore conveyor, a mining machine, an ore loader and a hydraulic shield support, wherein the ore conveyor is arranged parallel to a fully mechanized coal mining face and is provided witha mining machine travelling track; the mining machine is arranged on the ore conveyor, and can move in the direction parallel to the operation of the ore conveyor; the ore loader is in lap joint withthe head of the ore conveyor; the hydraulic shield support is arranged on the side, away from the fully mechanized coal mining face, of the ore conveyor in parallel; and both the ore conveyor and theore loader are belt conveyors. Mechanized fully mechanized mining of the non-coal mine is realized through using a coal mine underground mining technology, the mining efficiency of the non-coal mine,especially aluminum ore and phosphorite is greatly improved, the mining cost is reduced, and in the transportation process of the ore, and adhesive tape or a belt in the ore conveyor or the ore loaderis kept relatively stationary, so that the abrasion and the corrosion of the equipment are greatly reduced, and the service life of the equipment is prolonged.
Owner:NINGXIA TIANDI BENNIU IND GRP +1

Static wireless signal quality pre-warning device, system and method

ActiveCN103596206AImprove the efficiency of inspection and maintenanceReduce inspection and maintenance costsWireless communicationSignal qualityWireless transmission
The invention discloses a static wireless signal quality pre-warning device, system and method. The system comprises a train, an antenna connected with vehicle-mounted wireless equipment of the train, a wireless access point and the signal quality pre-warning device. The signal quality pre-warning device carries out wireless communication with the antenna of the vehicle-mounted wireless equipment through the wireless access point and has access to a signal quality pre-warning program. When the signal quality pre-warning device detects that the quality of a wireless signal from the vehicle-mounted wireless equipment of the train is normal, the signal quality pre-warning device is shut off, and relative equipment is needless to be detected and maintained. When the device detects that the quality of the signal from the vehicle-mounted wireless equipment of the train is abnormal, the signal quality pre-warning device is started, and relative equipment which is detected to be abnormal is detected and maintained. The static wireless signal quality pre-warning device, system and method solve the technical problems that in the prior art, detection and maintenance of a wireless transmission device of a vehicle are in a periodical maintenance and detection stage, state maintenance cannot be achieved, and particularly, quality of signals cannot be detected and maintained.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD

Motor detection method and device

The invention discloses a motor detection method and device. A motor is used for driving a circuit breaker, a motor rotating shaft is connected with the circuit breaker through a brake disc, the method comprises the steps that an actual movement curve of the motor rotating shaft is detected, and the movement curve is a curve that the rotating angle of the motor rotating shaft changes along with time; comparing the actual movement curve with a preset movement curve; if the angle difference value of the actual movement curve and the preset movement curve at any moment is smaller than the presetangle value corresponding to the moment, judging that the working state of the motor is normal; If the angle difference value of the actual movement curve and the preset movement curve at any moment is greater than or equal to the preset angle value corresponding to the moment, judging that the working state of the motor is abnormal. By obtaining the actual movement curve of the motor rotating shaft and comparing the actual movement curve with the preset movement curve, whether the working state of the motor is normal or not is judged, the intelligent level and reliability of the high-voltageswitchgear are improved, conversion from periodic maintenance to state maintenance is achieved, and the overhaul cost is saved.
Owner:TSINGHUA UNIV +1

Static wireless signal quality pre-alarm device, system and method

ActiveCN103596206BImprove the efficiency of inspection and maintenanceReduce inspection and maintenance costsWireless communicationWireless transmissionSignal quality
The invention discloses a static wireless signal quality pre-warning device, system and method. The system comprises a train, an antenna connected with vehicle-mounted wireless equipment of the train, a wireless access point and the signal quality pre-warning device. The signal quality pre-warning device carries out wireless communication with the antenna of the vehicle-mounted wireless equipment through the wireless access point and has access to a signal quality pre-warning program. When the signal quality pre-warning device detects that the quality of a wireless signal from the vehicle-mounted wireless equipment of the train is normal, the signal quality pre-warning device is shut off, and relative equipment is needless to be detected and maintained. When the device detects that the quality of the signal from the vehicle-mounted wireless equipment of the train is abnormal, the signal quality pre-warning device is started, and relative equipment which is detected to be abnormal is detected and maintained. The static wireless signal quality pre-warning device, system and method solve the technical problems that in the prior art, detection and maintenance of a wireless transmission device of a vehicle are in a periodical maintenance and detection stage, state maintenance cannot be achieved, and particularly, quality of signals cannot be detected and maintained.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD

Method for retarding corrosion of rectification system of vinyl acetate device

The invention discloses a method for retarding corrosion of a rectification system of a vinyl acetate device, and belongs to the technical field of chemical production. The method comprises the following steps: detecting the content of corrosive substances in a rectification system in a vinyl acetate device; comparing the detected content of the corrosive substance with a fortification value of the corrosive substance established according to a service material of the rectification system; and when the content of the detected corrosive substance is higher than the fortification value of the corrosive substance, discharging part of the corrosive substance from a discharge port arranged at the tail end of the rectification system. The method can effectively avoid or reduce non-planned shutdown caused by the corrosion problem, reduce the investment cost of equipment pipeline replacement, labor and the like of an enterprise, reduce the safety risk, and guarantee safe, stable and long-period operation of a rectification section device.
Owner:CHINA PETROLEUM & CHEM CORP +1

Brillouin distributed optical fiber sensing based structural joint monitoring device

InactiveCN102914271BMonitor openingMonitor closureUsing optical meansSheet steelSelf compensation
A Brillouin distributed optical fiber sensing based structural joint monitoring device is characterized by comprising steel plate bases (9), a linear steel sheet (5) and an L-shaped steel sheet (8) are mounted on each steel plate base (9), a pulley (6) is mounted at each of a suspension arm end of each linear steel sheet (5) and a corner end of each L-shaped steel sheet (8), an optical fiber (1) for stretching detection is wound on the two corresponding pulleys (6) at the suspension arm ends of the linear steel sheets (5) on two sides of a structural joint, an optical fiber (2) for contracting detection is wound on the two corresponding pulleys (6) at the corner ends of the L-shaped steel sheets (8) on two sides of the structural joint, an optical fiber (3) for temperature compensation detection is connected between the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection, and each of the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection is connected with a Brillouin distributed optical fiber demodulating system through a respective connecting optical fiber (4). The Brillouin distributed optical fiber sensing based structural joint monitoring device is capable of monitoring the stretching quantity and the closing quantity of the structural joint, achieves temperature self compensation and effectively overcomes the shortcomings when the optical fibers are simply laid.
Owner:无锡苏积传感科技有限公司

Agricultural irrigation device

An agricultural irrigation device comprises a water pump provided with a driving motor and a flow metering device arranged on the water pump and further comprises an RTU terminal and a dynamic power source embed underground and connected with the driving motor. The RTU terminal comprises a control circuit board and a power module which are mutually connected. The control circuit board comprises an MCU, a data collecting module and a relay driving circuit, wherein the data collecting module and the relay driving circuit are respectively connected with the MCU. The data collecting module is connected with the flow metering device. The relay driving circuit is connected with the dynamic power source. The dynamic power source comprises a dynamic electric bus wiring terminal, an alternating-current contactor, a first electromagnetic relay and a second electromagnetic relay. The alternating-current contactor is arranged between the dynamic electric bus wiring terminal and the driving motor. The first electromagnetic relay is respectively connected with the relay driving circuit and the alternating-current contactor. The second electromagnetic relay is respectively connected with the power module and the dynamic electric bus wiring terminal. According to the agricultural irrigation device, the service life of the RTU terminal is prolonged and the inspection and maintenance cost of the agricultural irrigation device is reduced.
Owner:山东三龙智能技术有限公司

A method and device for slowing down the corrosion of the condensate stripping tower top reflux system

The application provides a method and device for slowing down the corrosion of the top reflux system of a condensate stripper, which relates to the technical fields of coal chemical industry and petroleum processing. The device includes a condensate stripping tower and a spray tower, and the non-condensable gas output from the top of the condensate stripping tower is cooled by using the spray tower. The above-mentioned device is simple in structure and easy to operate. Using the spray tower as the non-condensable gas cooling system to replace the traditional tower top condenser can effectively solve or slow down the local serious ammonia substances in the tower top reflux system in the existing condensate stripping process. Corrosion Corrosion problems, reduce inspection and maintenance costs Avoid or reduce unplanned shutdowns caused by leakage problems, reduce maintenance costs, and ensure the safe, stable, and long-term operation of the entire stripping system.
Owner:CHINA PETROLEUM & CHEM CORP +1

Dust removal system and dust removal process method for preparing acetylene from wet calcium carbide

The invention provides a dust removal system and a dust removal process method for preparing acetylene from wet calcium carbide, and relates to the technical field of safe and environment-friendly digestion of calcium carbide dust. Comprising a dust fan cover system, a conveying pipeline system, a gas protection system, a dust cleaning system, a dust collecting system, a control system, an emptying system and a fireproof system. The output end of the dust fan cover system is connected with the conveying pipeline system; the dust cleaning system is used for cleaning calcium carbide dust in the conveying pipeline system; the dust collecting system is arranged at the tail end of the conveying pipeline system; according to the invention, a brand-new low-walking high-climbing wave type conveying pipeline design concept is adopted, so that the dust can be effectively shunted in the conveying process, the dust content of the conveying system is reduced, and the efficient operation of the system is kept.
Owner:SHANDONG LUXIN DESIGN ENG

Escalator fault signal processing system based on temperature and vibration

The invention discloses an escalator fault signal processing system based on temperature and vibration. The system comprises a base and a fault diagnosis module arranged on the base. The base is used for fixing the fault diagnosis module on a to-be-detected escalator or detaching the fault diagnosis module from the to-be-detected escalator. The fault diagnosis module comprises a signal acquisition module, a signal conversion module, a signal processing module, a signal storage module and a fault display module. The system is portable and detachable, various detection requirements can be met, the detection and maintenance cost is reduced, and the maintenance efficiency is improved.
Owner:NANJING METRO CONSTRUCTION CO LTD +1

Multi-well type two-phase flow metering pry and metering method thereof

The invention discloses a multi-well type two-phase flow metering pry, and belongs to the field of fluid metering, the multi-well type two-phase flow metering pry comprises a first production pipeline, a second production pipeline and a plurality of well mouth connecting pipelines, each well mouth connecting pipeline is communicated with the second production pipeline through the second production connecting pipeline, each second production connecting pipeline is provided with a second control valve, each second production connecting pipeline is provided with a first transition pipeline and a second transition pipeline, the first transition pipelines and the second transition pipelines are provided with first control valves and a third control valves respectively, and the first transition pipelines and the second transition pipelines are provided with first production connecting pipelines; two-phase flow meters are arranged at the position, located between the first transition pipelines and the communication position of the second transition pipelines and the first production connecting pipelines, of the first production connecting pipelines, and fourth control valves are arranged on the first production connecting pipelines. According to the two-phase flow meter, two-phase flow metering can be carried out, and online self-calibration can be carried out on each two-phase flow meter.
Owner:四川凌耘建科技有限公司 +1

A multi-well two-phase flow metering skid and its metering method

The invention discloses a multi-well type two-phase flow metering skid, which belongs to the field of fluid metering and includes a first production pipeline, a second production pipeline and several wellhead connecting pipelines, each of which is passed through the first wellhead connecting pipeline. The second production connection pipeline communicates with the second production pipeline, each of the second production connection pipelines is provided with a second control valve, and each of the second production connection pipelines is respectively provided with a first transition pipeline and a The second transition pipeline, the first transition pipeline and the second transition pipeline are respectively provided with a first control valve and a third control valve, and the first transition pipeline and the second transition pipeline are provided with a first production A connecting pipeline, a two-phase flowmeter is arranged on the first production connecting pipeline between the connection between the first transition pipeline and the second transition pipeline and the first production connecting pipeline, and the first production connecting pipeline A fourth control valve is arranged on the pipeline. The invention can measure the two-phase flow flow, and can perform online self-calibration for each two-phase flow meter.
Owner:四川凌耘建科技有限公司 +1

High security intelligent shared charging method for mobile phones

The invention provides a high-safety intelligent shared charging method of a mobile phone. The method comprises the following steps: a power driving device is started; the shielding transmission mechanism receives the power of the power driving device and transmits the power to a shielding door member; the shielding door member is switched from a blocking state to an open state; the shielding transmission mechanism receives the power of the power driving device and transmits the power to the shielding door member. The lifting control mechanism receives the power of the power drive device and uses the power to release the locking restraint on the charging plug member, The charging plug member is automatically switched from the retracted state to the extended state, and at this time, the shielding door member is switched to the blocking state, the charging output end of the charging plug member is passed out of the box body by the shielding door member, and the user manually charges thecharging output end of the charging plug member and the charging socket of the mobile phone. When the charging of the mobile phone is finished, the shield door member is switched to the open state, and then to the blocking state. In this process, the lifting control mechanism receives the power of the power drive device and uses the power to drive the charging plug member to switch to the retracted state for resetting.
Owner:四川易景智能终端有限公司

Track bridge hoister guiding plate

The invention discloses a track bridge hoister guiding plate. The track bridge hoister guiding plate comprises a first structural part and a second structural part. The first structural part is a square frame body. The outer side face of the rear end of the first structural part makes contact with and is welded to the end beam face of a hoister. The lower end of the first structural part is open, and the second structural part is inserted into the first structural part through an opening. The end faces of the two sides of the first structural part and the second structural part are fixedly connected through an upper pin shaft and a lower pin shaft. After transformation of the guiding plate is completed, the force bearing part of a force bearing guiding plate body of the guiding plate can be transferred to the whole guiding plate device through bolts, so that the guiding plate strength is greatly improved, and the guiding plate shock resistance is remarkably improved. Failures caused by cut-off of screws of the guiding plate are eliminated, the fault time of each month can be shortened by 200 minutes at least, replacement times of the hoister can be reduced by six, the guiding plate maintaining cost is about 4550 yuan, more importantly, the potential safety hazards caused by objects falling from high altitudes are greatly eliminated, and the equipment safety coefficient is increased.
Owner:TIANJIN FIVE CONTINENTS INT CONTAINER TERMINAL

Engine speed control system and engineering machine

The invention discloses an engine speed control system and an engineering machine. The engine speed control system comprises an acquisition conversion unit, a calibration unit and a calculation transmitting unit. The acquisition conversion unit is used for acquiring signals about statuses of an accelerator pedal and converting the signals into digital signals, the signal about the status that the accelerator is not stepped corresponds to a first digital signal, and the signal about the status that the accelerator pedal is full stepped corresponds to a second digital signal. The calibration unit is used for subjecting the digital signals obtained by the acquisition conversion unit to data acquisition with engine speed, the first digital signal corresponds to idle speed, and the second digital signal corresponds to maximum adjustable speed. The calculation transmitting unit is used for calculating the corresponding engine control speed according to the current digital signal obtained by the acquisition conversion unit and transmitting the engine control speed to an engine electro-control unit. By the use of the engine speed control system, speed fluctuation due to the fact that analog signals are interfered can be avoided, precision in controlling engine speed can be improved and cost in check and maintenance of the accelerator pedal can be reduced.
Owner:SANY HEAVY IND CO LTD (CN)

A control system and control method for the movement of a manipulator for inspection of container welds

The invention relates to a system and method for controlling the container welding line inspection mechanical arm movement. The system and method is used for inspecting the mechanical arm movement. The problem that in the prior art in China, a method for planning a container welding line inspection mechanical arm movement track is not provided is solved. The inspection machine movement control system is composed of a man-machine interaction subsystem, a power management subsystem, a movement control subsystem and a mechanical arm subsystem. Five inspection tracks including the barrel welding line inspection track, the connecting pipe welding line inspection track, the intersected pipe face welding line inspection track, the intersected pipe circular bead welding line inspection track and the bottom sealing head welding line inspection track are planed and designed, then the container welding line inspection mechanical arm movement track is generated through the five tracks, and the man-machine interaction subsystem enables the movement control subsystem to control a mechanical arm to complete an inspection task according to compact movement points on the container welding line inspection mechanical arm movement track. The system and method are applied to inspection on large-scale high-risk containers in the fields such as nuclear power and chemical engineering.
Owner:HARBIN INST OF TECH +1

Return ash control device of circulating fluidized bed boiler return feeder and control method

PendingCN111678127ASolve the problem of non-compliance with environmental protection indicators of smoke exhaustSolve the unstable operationFluidized bed combustionApparatus for fluidised bed combustionAir preheaterFluidized bed
The invention relates to a return ash control device of a circulating fluidized bed boiler return feeder and a control method. The device comprises a return ash storage tank, one side of the return ash storage tank communicates with a return feeder ash discharge pipe through a feeding pipe, the other side of the return ash storage tank communicates with a bottom flue of an air preheater through afirst ash discharge pipe, the top of the return ash storage tank communicates with the bottom flue of the air preheater through an exhaust pipe, and the bottom flue of the air preheater communicates with a dust remover; and an air distribution plate is arranged at the bottom in the return ash storage tank, an air chamber is formed between the air distribution plate and the bottom surface of the return ash storage tank, the air chamber is connected with a primary fan through an aeration air inlet pipe, and the feeding pipe, the first ash discharge pipe, the exhaust pipe and the aeration air inlet pipe are provided with a feeding pipe electric switch valve, an ash discharge pipe electric switch valve, an exhaust pipe electric ball valve and an aeration air electric ball valve correspondingly. The return ash control device of the return feeder can adjust and control the return ash amount of the return feeder without secondary pollution, and energy in the return ash can be reused.
Owner:HUBEI DONGFANG CHEM IND
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