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40results about How to "Exclude as soon as possible" patented technology
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Water leakage detector, water leakage detecting system and water leakage detecting method
ActiveCN102606891AAccurate detectionExclude as soon as possiblePipeline systemsWater leakageEngineering
The invention discloses a water leakage detector, a water leakage detecting system and a water leakage detecting method. The water leakage detector comprises an acquisition device and a processing device, wherein the acquisition device is used for acquiring sound signals for preprocessing; and the processing device is used for performing Fourier transformation of the sound signals, performing frequency analysis and calculation, extracting features of the sound signals, performing power spectrum estimation for the sound signals to analyze frequency components of the signals, and judging whether leakage exists or not according to peak values and bandwidths of a power spectrum. The water leakage detector and the water leakage detecting system are simple and accurate in detection, and a water leakage fault can be recognized according to a pattern recognition method and by means of Fourier functional transformation and power spectrum analysis, so that maintainers can remove the fault as soon as possible and replace water pipes, waste is avoided, water supply quality is guaranteed, and economic loss is reduced. Besides, the problem of waste due to difficulty in water supply leakage detection is avoided, and the detecting method is accurate and convenient in control.
Owner:GUANGZHOU TOSHIBA BAIYUN AUTOMATION SYST
Application cluster monitoring device and method
InactiveCN104618161ATroubleshootingImprove operation and maintenance efficiencyData switching networksReal-time computingSimple Network Management Protocol
The invention provides an application cluster monitoring device and method. The application cluster monitoring device comprises a first acquisition unit and a judgment unit, wherein the first acquisition unit is used for acquiring operating information of a host computer of a monitored application cluster through a simple network management protocol (SNMP), and acquiring configuration information of the monitored application cluster and database information through Java management extensions (JMX); the judgment unit is used for judging whether the monitored application cluster is normal or not according to the acquired configuration information, the acquired operating information of the host computer and the acquired database information, informing the first acquisition unit of the condition when the judgment result shows that the application cluster is normal, and giving out fault information when the judgment result shows that the application cluster has a fault. By means of the application cluster monitoring device and method, operation and maintenance efficiency can be improved.
Owner:INSPUR SOFTWARE CO LTD
Alternating-current header box adopting carrier communication and photovoltaic power station
InactiveCN104953946ASimple physical structureLow costPhotovoltaicsSingle network parallel feeding arrangementsElectric power transmissionBusbar
The invention relates to an alternating-current header box adopting carrier communication and a photovoltaic power station. The alternating-current header box comprises an intelligent acquisition unit, a busbar, an input breaker, a current transformer and a lightning protector, wherein the intelligent acquisition unit is used for acquiring a signal, then loading the acquired signal to the current of a power supply cable in a high-frequency signal mode and then transmitting the current by use of power; the low voltage side of a box transformer substation is provided with a carrier wave module and a communication management unit; the carrier wave module is used for decomposing the high-frequency signal from the current of the power supply cable; and the acquired signal is transmitted to a monitoring system by virtue of the communication management unit. According to the alternating-current header box, a power-line carrier technology is adopted for transmitting data, so that the alternating-current header box is simple in structure, relatively low in cost, stable in performance and convenient in system overhaul and maintenance.
Owner:内蒙古电力勘测设计院有限责任公司
Traditional Chinese medicine preparation for promoting postpartum recovery of parturients and shortening lochial time
InactiveCN102886033APromote postpartum recoveryExclude as soon as possibleUnknown materialsSexual disorderTherapeutic effectUterus
The invention discloses a traditional Chinese medicine preparation for promoting postpartum recovery of parturients and shortening lochial time. The traditional Chinese medicine preparation is prepared from the following raw material medicines in parts by weight: 12 to 18 parts of radix astragali, 3 to 7 parts of colla corii asini, 12 to 18 parts of herba epimedii, 6 to 12 parts of angelica sinensis, 4 to 8 parts of ligusticum chuanxiong, 2 to 4 parts of semen persicae, 4 to 8 parts of rhizoma zingiberis, 10 to 15 parts of radix paeoniae alba, 4 to 8 parts of pericarpium citri reticulatae and 4 to 8 parts of liquorice. The traditional Chinese medicine preparation for promoting the postpartum recovery of parturients and shortening the lochial time is improved based on a Shenghua Tang; furthermore, the medicines for reinforcing qi and nourishing blood are added, so that the formula has the effects on reinforcing qi and nourishing blood, promoting blood circulation to remove blood stasis and warming the channels to relieve pain and the like, and is capable of promoting the uterus to quickly recover, so that the lochia is eliminated as quickly as possible; and the traditional Chinese medicine preparation has the treatment effects on blood stasis and left stasis, bad recovery, internally formed blood clots and alvine cold pain and the like.
Owner:山东省妇幼保健所
Clamp
InactiveCN105690298AExclude as soon as possibleImprove pass rateWork holdersPositioning apparatusVacuum pumpStress sensors
The invention discloses a clamp which comprises a worktable and a plurality of clamping plates. The back of each clamping plate is connected with a controllable air cylinder. A plurality of suction nozzles longitudinally penetrating the worktable are formed in the worktable. Each vacuum suction nozzle is connected with a vacuum pump. The periphery of each vacuum suction nozzle is further provided with a first pressure sensor. The controllable air cylinders, the vacuum pumps and the first pressure sensors are in signal connection with a controller. The controller pushes a clamping plate to clamp a workpiece to be machined in the horizontal direction through the controllable air cylinders, meanwhile, the controller controls the air pressure of the vacuum pumps according to signals output by the first pressure sensors, and the workpiece to be machined is pressed in the vertical direction through the vacuum pumps. The pressing condition of the workpiece to be machined in the vertical direction is judged according to the signals output by the first pressure sensors, the flatness of the lower surface of the workpiece to be machined can be judged, inferior-quality products can be removed as soon as possible, and the product qualification rate is increased.
Owner:SUZHOU HEYER PRECISION CO LTD
Method and system for power failure reporting of collection system
ActiveCN108551356AImprove real-time performanceTroubleshootingElectric signal transmission systemsPower distribution line transmissionCollection systemStorm
The invention discloses a method and a system for power failure reporting of a collection system. In the event of a power failure, each power failure node in the collection system summarizes the powerfailure information of all power failure nodes and generates total power failure information, and the power outage nodes report the total power failure information to the central controller. When a user power failure accident occurs in the electricity information collection system, the power failure report is performed in real time to improve the real-time performance of the power failure report,and the power failure user can make an accurate judgment to eliminate the fault and restore the power supply as soon as possible. In addition, the whole power failure reporting process is divided into two stages of information collection and information reporting to reduce the incidence of centralized reporting of network storms, thereby improving the reliability of reporting.
Owner:南昌市科陆智能电网科技有限公司
Method for making manyprickle acanthopanax root black tea
The invention provides a method for making manyprickle acanthopanax root black tea. The method comprises the steps of dehydration, essence airing, rolling, full fermentation, scattering and baking. Branches and leaves of pure natural wild manyprickle acanthopanax are selected as raw materials and made into manyprickle acanthopanax root black tea with the water content being lower than 5%. The manyprickle acanthopanax root black tea maintains multiple nutrient substances contained in the fresh manyprickle acanthopanax root and has various functions of common black tea, and is a kind of novel health care tea. The method provides a newest storage technology for manyprickle acanthopanax leaves, and a novel storage mode for the mass growth period of the manyprickle acanthopanax leaves is provided. The problem that the manyprickle acanthopanax root leaves are overproduced is effectively solved, the storage life is prolonged, the manyprickle acanthopanax root black tea has an unique faint scent different from common tea leaves, general acknowledge of people about manyprickle acanthopanax root is broken through, and a brand-new agriculture product economy is created. The manyprickle acanthopanax root leaves are convenient to store and transport after being processed, use of the manyprickle acanthopanax root is free of limitation of time and area, and the manyprickle acanthopanax root black tea is suitable for wide popularization and beneficial to more people.
Owner:HUINAN COUNTY LONGGANGSHAN ECOLOGICAL SPECIALTY DEV
Ground fault detection system and detection method
InactiveCN110045216AExclude as soon as possibleDetection securityElectromagentic field characteristicsFault locationUncrewed vehiclePower circuits
The invention relates to the technical field ofelectric power fault detection, and discloses a ground fault detection system and method. The ground fault detection system comprises a plurality of signal transceiving terminals in signal connection with one another, a control terminal, and a drone. The method comprises the steps that a test signal is injected into anelectric power circuit through the signal transceivingterminals, a back end signal transceivingterminal adjacentto the signal transceivingterminals detects the test signal and sends feedback information to the signal transceiving terminals, so that the signal transceiving terminals determine a faulty section where a ground fault occurs and feeds back position information of the faulty section to the control terminal; andthen thecontrol terminal injects the test signal into the faulty section by controlling the drone to accurately detect the faulty section and locate the fault location where the ground fault occurs. The procedure of the ground fault detection method is automatically executed by the control terminal, the drone, and the signal transceivingterminalsarranged in the electric power circuit,the detection processis safe and reliable, the fault location where the ground fault occurs can be located more quickly, efficiently, and accurately, so that the ground fault can be eliminated as early as possible,and more significant losses are avoided.
Owner:GUIZHOU POWER GRID CO LTD
Live streaming network transmission fault monitoring method and system
ActiveCN107294767AOverhaul as soon as possibleExclude as soon as possibleSelective content distributionData switching networksInformation transmissionRelevant information
The present invention provides a live streaming network transmission fault monitoring method. According to the method, each transmission action in a network is monitored, so that the detailed information of the transmission actions is recorded; the relevant information of a start node is compared with the relevant information of a termination node; whether errors exist in a transmission process is judged from the perspectives of time, location and content; and errors which re-occur a certain number of times are recorded as faults and are reported. With the live streaming network transmission fault monitoring method provided by the invention adopted, the information transmission situations of all live streaming services in the network can be automatically detected, abnormal situations in the transmission process can be found out in time, and fault information can be immediately reported, and therefore, maintenance can be performed as soon as possible according to the faults so as to eliminate the faults. The method has the advantages of high efficiency, high accuracy, convenience and high flexibility.
Owner:ZHONGGUANG REDIANYUN TECH CO LTD
Alarm method in cluster system, equipment and cluster system
ActiveCN104468153AImprove securityAvoid extra burdenData switching networksEmbedded systemCluster systems
The invention discloses an alarm method in a cluster system, equipment and a cluster system. Patch information of network equipment is mutually published between neighbor equipment according to topological relation between the network equipment in the cluster system. When one of network equipment determines that the equipment has an un-activated patch according to the patch information published by the neighbor equipment, and / or the patch edition of the equipment is low, an alarm is actively given to inform a web master, so that a patch bug of the network equipment is eliminated as quick as possible, the network equipment is prevented from running in a high danger environment for a long time and security of the cluster system is improved; meanwhile, if the network equipment determines that the equipment does not need to update the patch according to the patch information published by the neighbor equipment, the additional operation is not carried out, so that the additional load in the equipment is avoided.
Owner:XFUSION DIGITAL TECH CO LTD
Double-decker elevator
InactiveCN104030119AFixed issues with being locked inside normal elevatorsExclude as soon as possibleElevatorsDouble deckerEngineering
The present invention provides a double-decker elevator which is capable of sending a message that passengers are kept in a normal lift car to the management center even if abnormality processing is carried out for the lift car in abnormality when passengers are kept in a normal lift car. If the slight abnormality can not be eliminated by a passenger, sends the information of the abnormality to the management center, and inform a manager of the condition that the slight abnormality can not be eliminated by a passenger. If the slight abnormality can not be eliminated by a passenger, sends the information of the abnormality to the management center, and inform a manager of the condition that the slight abnormality can not be eliminated by a passenger; and if the normal lift car having not abnormality is judged to have passengers in it, carries out abnormality processing for the lift car in abnormality and sends the information of the abnormality to the management center.
Owner:HITACHI LTD
Intelligent low-voltage cable branching box, running method thereof and intelligent power distribution area
InactiveCN108879948ASupport positioningSupport repairCircuit arrangementsSustainable buildingsPower cableLow voltage
The invention proposes an intelligent low-voltage cable branching box, a running method thereof and an intelligent power distribution area. The intelligent low-voltage cable branching box comprises anintelligent monitoring terminal, a main bus, an isolation switch, a box door travel switch and intelligent residual current action circuit breakers, wherein the intelligent monitoring terminal is connected with a power cable at a power side of the isolation switch via a low-voltage power line, the intelligent monitoring terminal is connected with an auxiliary switch of the isolation switch and the box door travel switch via a control cable, one end of the main bus is connected with a load side of the isolation switch, and the other end of the main bus is connected with at least two intelligent residual current action circuit breakers. A low-voltage power line carrier communication technology is employed, the power cable is used as a communication medium, running data acquisition and transmission of the power distribution area are achieved, the intelligent low-voltage cable branching box has the technical advantages of wiring free, performance stability, communication channel reliability, consistent physical reliability of the low-voltage power distribution network and the like and is simple to construct and convenient to maintain and manage, and the coverage range and the low-voltage power distribution network are consistent.
Owner:CHINA GRIDCOM
Router control method and device based on augmented reality
InactiveCN107450723AGood informationEasy to set upInput/output for user-computer interactionData switching networksComputer terminalUser control
The invention provides a router control method and device based on augmented reality. The method comprises the steps of 100, obtaining a current image of a router and receiving terminal information sent by the router; 200, according to the current image and terminal information, generating an augmented reality image; 300, displaying the augmented reality image on a screen; 400, collecting touch actions of a user in the augmented reality image display region; 500, according to the touch actions, obtaining corresponding control instructions through matching, and sending the control instructions to the router, so that the router executes the corresponding operation according to the control instructions. A user can more visually and conveniently control the router, and the user control experience is improved.
Owner:台州市吉吉知识产权运营有限公司
Elevator
The present invention provides an elevator, which is capable of notifying a manager of a slight abnormality which can not be noticed by a passenger through sending the abnormality information to a management center. Whether the abnormality can be dealt by the passenger or not is judged, and the dealing method of the abnormality is told to the passenger if yes, and sending the abnormality to the management center even if the abnormality can be dealt by the passenger if specified conditions are fulfilled. If the abnormality can be dealt by the passenger, the dealing method is told to the passenger, so that the abnormality can be eliminated as soon as possible. If the abnormality can not be dealt by the passenger, the abnormality is sent to the management center, so as to enable a manager of the management center to eliminate the abnormality.
Owner:HITACHI LTD
A kind of preparation method of small particle size doped potassium-molybdenum alloy powder
The invention discloses a preparation method of small-granularity potassium-doped molybdenum alloy powder. The method comprises the following steps of: sieving potassium-doped molybdenum dioxide serving as a raw material; placing the sieved raw material into a reduction furnace in a single temperature region; performing reduction treatment for 3.5 to 5.5 hours under the conditions of hydrogen flow of 10 m<3> / h to 14 m<3> / h and constant temperature of between 940 and 970 DEG C; and cooling along with the furnace to obtain the potassium-doped molybdenum alloy powder with the average granularityof 1.5 to 3.5 mu m. The method is simple; the reduction temperature is low; the reduction time is short; the granularity of the reduced molybdenum alloy powder is controlled not to enlarge and the volatile loss of the potassium element is controlled; the wastage rate of the potassium element is not more than 25 percent; the advantages of high efficiency and energy conservation are achieved; and the prepared potassium-doped molybdenum alloy powder can be sintered by the conventional sintering process and the subsequent treatment process is simple.
Owner:JINDUICHENG MOLYBDENUM CO LTD
Hepatocellular carcinoma PDX model construction method
Disclosed are: a composition for determining the tumor formation rate during the construction of a hepatocellular carcinoma PDX model, which is intended for non-disease treatment; and a hepatocellularcarcinoma PDX model construction method using the composition. The composition for judging the tumor formation rate during the construction of the hepatocellular carcinoma PDX model comprises GPC3 and Ki67 in a hepatocellular carcinoma tumor tissue sample, and the tumor formation rate of PDX modeling can be judged by detecting the two proteins. According to the method for predicting tumorigenesisof the hepatocellular carcinoma PDX model, the immunohistochemical results of tumor tissues GPC3 and Ki67 of a hepatocellular carcinoma patient are interpreted, and whether tumorigenesis of the PDX model occurs or not is predicted in an early stage. The PDX model is predicted not to be nodulated in the early stage, and the PDX model can be constructed as soon as possible.
Owner:ZHEJIANG UNIV
Crude oil treatment equipment for oil exploitation environment protection
ActiveCN113667511ASolve desalination work efficiencySolve technical problems with large crude oil contentDewatering/demulsification with chemical meansDewatering/demulsification with electric/magnetic meansDemulsifierElectrolysis
The invention relates to the technical field of oil treatment, in particular to crude oil treatment equipment for oil exploitation environment protection. The technical problems to be solved are that the demulsifier and clear water are distributed in a scattered mode, the desalting work efficiency of crude oil is affected, and the content of crude oil in waste water discharged in the later period is large due to the fact that impurities are distributed in a scattered mode. According to the technical scheme, the crude oil treatment equipment for oil exploitation environment protection comprises a stirring assembly, a milking and diluting assembly and the like; and a demulsifier nozzle is fixedly connected to a top plate of the electrolysis cabin. In the technical scheme provided by the invention, impurities in crude oil and clear water are intensively demulsified, and clear water is timely supplemented to dilute the impurities, so that the working efficiency of mutual cooperation of the demulsifier and the clear water is greatly improved, and most impurities are concentrated in the central area of the bottom of a cabin; and a large amount of crude oil can be prevented from being mixed in wastewater in later layered drainage work.
Owner:东营昱辰技术有限公司
Operation monitoring platform for medium-frequency electric furnace
InactiveCN110425876AImprove securityExclude as soon as possibleFurnace safety devicesCrucible furnacesTransceiverIntermediate frequency
The invention relates to the technical field of electric furnace operation monitoring, in particular to an operation monitoring platform for a medium-frequency electric furnace. The platform comprisesa central control room and a plurality of electric furnaces, wherein the central control room is connected with a transmission module through a signal connection mode, and signal connection is achieved between the transmission module and a plurality of circuits; the plurality of electric furnaces are provided with monitoring modules, wherein the monitoring modules are electrically connected withan electric control cabinet, the electric control cabinet is connected with a remote cabinet through a signal connection mode, and meanwhile electrical connection is achieved between the remote cabinet and the central control room; and the central control room comprises an industrial personal computer and a signal transceiver, wherein signal transmission is conducted between the signal transceiverand the industrial personal computer through ethernet, and therefore the connection is achieved between the industrial personal computer and the signal transceiver through local ethernet. According to the operation monitoring platform for the medium-frequency electric furnace, large-scale accidents can be effectively avoided, maintenance efficiency is improved, fault equipment downtime is greatlyshortened, so that work strength of a process inspector is lightened, and running safety of the electric furnace is improved.
Owner:美利林科技有限公司
Low-voltage electric equipment fault positioning system based on electric energy metering technology
ActiveCN112198379ARealize fault locationImprove troubleshooting efficiencyProgramme controlCurrent/voltage measurementSoftware systemPower usage
The invention discloses a low-voltage electric equipment fault positioning system based on an electric energy metering technology, and the system comprises a positioning device which comprises an MCU,a feature data collection module, a feature database, a touch display screen, a communication module, and a power module. The input end of the feature data collection module is connected with a digital transmitter and a metering module of the electric energy meter of each room, the output end of the feature data collection module, the feature database, the display screen and the communication module are connected with the MCU, and the communication module is connected with a user software system. By arranging the positioning device, the operations of establishing the feature database, collecting the power utilization data in real time, extracting the transient feature power and the transient current amplitude are realized, and through data analysis and comparison, the position of a room where a fault occurs be identified and a faulty electric appliance in the room can be identified, and fault positioning can be rapidly realized; and meanwhile, information is transmitted to a user, sothat the fault searching efficiency is improved.
Owner:江阴长仪集团有限公司
Network fault rapid troubleshooting method and device
ActiveCN111953537AImprove Internet experienceExclude as soon as possibleData switching networksComputer networkEngineering
The invention relates to a network fault rapid troubleshooting method and device, and the method comprises the steps: modifying a firewall of gateway equipment when a broadband is detected to be disconnected, and enabling all HTTP requests and DNS requests to be redirected to the local; generating an Http Post request, wherein parameters of the Http Post request comprise detailed information of the gateway equipment and a current error code; returning the webpage containing the Http Post request to the browser; receiving and executing a Javascript code in the webpage, and converting the Http Post request into a two-dimensional code; and when a user scans the two-dimensional code through a mobile phone, analyzing a network fault of the broadband, and returning a fault reason to the mobile phone. According to the invention, the reason of the fault can be quickly and accurately checked under the conditions that engineering personnel do not need to go to the door and a user does not need to open a gateway webpage interface.
Owner:SHENZHEN YOUHUA COMM TECH
Manufacture of leakage inspecting strips
InactiveCN1982862AImprove sensing sensitivityAvoid false alarm situationsFluid-tightness measurement using electric meansConductive materialsColloid
A method for preparing leakage detection belt includes jacketing woven layer on surface of two conductive core wires to form detection wire, setting two said conductive core wires separately in model nests at two sides of model used for forming belt isolation core wire, injecting colloid non-conduction material into said nests of model to form isolation core wire, permeating colloid non-conduction material into partial woven layer of said conduction core wire to make said conduction core wire be integrated with isolation core wire.
Owner:松井正仁
Pump and liquid conveying equipment
PendingCN112460000AExclude as soon as possibleLiquid pressure solutionPositive displacement pump componentsFlexible member pumpsEngineeringControl valves
The invention provides a pump and liquid conveying equipment. The pump comprises a pump body which comprises a liquid inlet, a first liquid outlet and a second liquid outlet. The pump body is providedwith a first cavity, a pressurization cavity, a second cavity and a third cavity which sequentially communicate. The pump body is provided with a driving mechanism, and the driving mechanism is usedfor changing the volume size in the pressurization cavity. A control valve body comprises an electromagnetic coil, a sealing shell, a valve element assembly and a valve assembly. The electromagnetic coil is used for generating electromagnetic force to drive the valve element assembly in the sealing shell to act, thus the valve assembly opens or closes a valve opening of the third cavity, and connection between the second cavity and the first cavity is opened or closed. The equipment is used in a system when the pump stops, liquid pressure in the pump cannot be rapidly released through an output end pipeline, the problem that the liquid pressure is reduced gradually is solved, the purpose of releasing the liquid pressure in the pump rapidly is achieved, air in a liquid input pipe and the pump can be exhausted as fast as possible, and the liquid absorbing efficiency is improved.
Owner:HUNAN DIHONG WULIAN TECH CO LTD
A method for constructing a PDX model of hepatocellular carcinoma
ActiveCN111948392BExclude as soon as possibleMaterial analysisAnimal husbandryDiseaseParanasal Sinus Carcinoma
The invention discloses a composition for judging the tumor formation rate when constructing a PDX model of hepatocellular carcinoma for the purpose of non-disease treatment, and a method for constructing a PDX model of hepatocellular carcinoma using the composition. The composition of the present invention for determining the tumor formation rate of hepatocellular carcinoma PDX model construction includes GPC3 and Ki67 in hepatocellular carcinoma tumor tissue samples, and the tumor formation rate of PDX modeling can be judged by detecting these two proteins. The method for predicting the tumor formation of a PDX model of hepatocellular carcinoma according to the present invention is to predict whether the tumor formation of the PDX model is early or not by interpreting the immunohistochemical results of GPC3 and Ki67 in tumor tissues of patients with hepatocellular carcinoma. Early prediction that the PDX model will not form tumors can rule out the construction of PDX models as soon as possible.
Owner:ZHEJIANG UNIV
Comprehensive control method for underground water resource after being immersed by sea water
InactiveCN1194146CChange the status quoSolve pollutionBarrages/weirsWater/sewage treatment bu osmosis/dialysisDiversion damBedrock
The comprehensive control and treatment method of underground water resource intruded by sea water includes the following steps: surveying the topography and its surface features of control area in overall; finding out the main stream position and direction of alluvial fan of the quaternary system, further finding out the monadnock within nearest distance of left and right banks of main stream position of quaternary system alluvial fan; using connecting line between two monadnocks as central line of grout curtain wall, curtain grouting is started from bedrock and grouting to sea level elevation; setting diversion dam on entrance of river in the control area; setting several sunk well with large gushing water on the main stream position of quaternary system allavial fan at up-stream side of curtain wall.
Owner:孙继勇 +1
A Line Monitoring System
ActiveCN106093697BTimely judgment informationAccurately judge informationTesting dielectric strengthFault locationData packElectric power equipment
Owner:WUXI TAIHU UNIV
elevator
ActiveCN104030115BExclude as soon as possibleExclude practicallyElevatorsState managementEngineering
Owner:HITACHI LTD
Extractor hood with high-efficiency trapping function
InactiveCN112268304AReduce exhaust air volumeReduce energy consumption and noiseDomestic stoves or rangesLighting and heating apparatusElectric machineryStructural engineering
The invention discloses an extractor hood with a high-efficiency trapping function. The extractor hood comprises an extractor hood shell capable of being installed on a side wall, an inner shell is installed in the extractor hood shell, air supplementing openings are formed in the inner shell and can be driven by a cross-flow draught fan, and meanwhile an air suction opening is formed in the side,close to the wall, of the extractor hood shell. An oil leakage net and an oil collecting tank are arranged above the air suction opening. A motor is installed in the extractor hood shell, baffles aredriven by a connecting rod and transmission rods to be opened and closed along with the opening state, and hinges are installed on the two sides of the extractor hood shell and connected with the baffles. An air discharging port is formed in the top of the extractor hood shell, a smoke exhaust fan is installed in the extractor hood shell, and an air outlet of the smoke exhaust fan communicates with an inlet of an air exhaust pipeline penetrating through the air discharging port. According to the extractor hood with the high-efficiency trapping function, to achieve the same trapping effect, the required air discharging amount needed in the smoke exhaust manner is greatly reduced, correspondingly, noise and energy consumption can be reduced, and the purposes of energy conservation, emissionreduction and noise reduction are achieved.
Owner:TIANJIN UNIV
Water leakage detector, water leakage detecting system and water leakage detecting method
ActiveCN102606891BExclude as soon as possibleReplace as soon as possibleDetection of fluid at leakage pointPipeline systemsWater leakageEngineering
The invention discloses a water leakage detector, a water leakage detecting system and a water leakage detecting method. The water leakage detector comprises an acquisition device and a processing device, wherein the acquisition device is used for acquiring sound signals for preprocessing; and the processing device is used for performing Fourier transformation of the sound signals, performing frequency analysis and calculation, extracting features of the sound signals, performing power spectrum estimation for the sound signals to analyze frequency components of the signals, and judging whether leakage exists or not according to peak values and bandwidths of a power spectrum. The water leakage detector and the water leakage detecting system are simple and accurate in detection, and a water leakage fault can be recognized according to a pattern recognition method and by means of Fourier functional transformation and power spectrum analysis, so that maintainers can remove the fault as soon as possible and replace water pipes, waste is avoided, water supply quality is guaranteed, and economic loss is reduced. Besides, the problem of waste due to difficulty in water supply leakage detection is avoided, and the detecting method is accurate and convenient in control.
Owner:GUANGZHOU TOSHIBA BAIYUN AUTOMATION SYST
Rear air window for removing negative pressure of automobile cab
The invention discloses a rear air window for removing negative pressure of an automobile cab. The rear air window is mounted at a rear part of an automobile cab, the rear air window is a box body with a frame, an upper part of the box body is open, a plurality of windows are formed at a lower portion of the box bottom, each window is provided with a plugging rubber sheet, one side of each plugging rubber sheet is of a movable structure, the other side of each plugging rubber sheet is fixed or compacted on an inner side edge of the corresponding window through a partition plate, the partitionplates are vertically arranged relative to the plugging rubber sheets, and a plurality of air outlet bins are formed among the partition plates. The rear air window is advantaged in that drivers and passengers can conveniently close vehicle doors, a negative pressure problem is solved, a sealing problem of a cab is further solved, and the structure is simple, economical and practical.
Owner:SHIYAN ZHENGHE VEHICLE CAB
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