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34results about How to "Measurement result influence" patented technology
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Circuit and method for measuring voltage transformer voltage coefficient
ActiveCN103267958AAvoid influenceEfficient implementationElectrical measurementsUltra high pressureSingle stage
The invention relates to a circuit for measuring a voltage transformer voltage coefficient, and further relates to a method for measuring the voltage transformer voltage coefficient through the circuit. The circuit for measuring the voltage transformer voltage coefficient comprises a first single-stage voltage transformer (T1), a second single-stage voltage transformer (T2) and a passive linear circuit composed of an isolation transformer (T3). Both the rated transformation ratio of the first single-stage voltage transformer (T1) and the rated transformation ratio of the second single-stage voltage transformer (T2) are equal to K; the rated transformation ratio of the isolation transformer (T3) is equal to 1; a primary low-voltage terminal (X1) of the first single-stage voltage transformer (T1) is connected with a primary high-voltage terminal A2 of the second single-stage voltage transformer (T2); a secondary high-voltage terminal a1 of the first single-stage voltage transformer (T1) is connected with a primary high-voltage terminal A3 of the isolation transformer (T3); a secondary low-voltage terminal x1 of the first single-stage voltage transformer (T1) is connected with a primary low-voltage terminal X3 of the isolation transformer (T3); a secondary low-voltage terminal x3 of the isolation transformer (T3) is connected with a secondary high-voltage terminal a2 of the second single-stage voltage transformer (T2). According to the circuit and method for measuring the voltage transformer voltage coefficient, the effect of shielding errors of a voltage transformer on a series addition line can be overcome, and power frequency voltage addition can be effectively used in a 220 kV high-voltage interval and can even be used in a 330kV-1000kV extra-high-voltage interval.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
System for monitoring liquid temperature and liquid level
InactiveCN102494735AGuaranteed accuracyGuaranteed service lifeLevel indicators by physical variable measurementPistonLiquid temperature
The invention provides a system for monitoring a liquid temperature and a liquid level. The system comprises a main pipeline, a liquid level detection module, a partition board, and a pressure transmission pipe, wherein the front end of the pressure transmission pipe is immersed into a water tank and the pressure transmission pipe is connected with the partition board in a sealed manner; the liquid level detection module comprises a shell and the shell is internally provided with a deformation membrane, a guide piston and a capacitance assembly; the deformation membrane covers the back open end of a corrugated pipe and the front open end of the corrugated pipe is fixed to the main pipeline; a pressure cavity for sensing liquid level pressure is defined by the partition board, the corrugated pipe and the deformation membrane; the back end of the pressure transmission pipe is inserted into the pressure cavity; the capacitance assembly comprises a fixed capacitance plate fixed on the shell and a movable capacitance plate connected with the shell through a spring; the movable capacitance plate is close to or far away from the fixed capacitance plate under the deformation effect of the deformation membrane; a capacitive reactance between the fixed capacitance plate and the movable capacitance plate is output to a signal processor; and the capacitive reactance is converted into a water tank liquid level by the signal processor. The system for monitoring the liquid temperature and the liquid level, provided by the invention, has the advantages of application to various liquid, no influences on components of liquid to be detected, capability of realizing stepless continuous measurement on the liquid level, and long service life.
Owner:宋玉兴
Multi-tooth online detection device and method for precision forging of straight-tooth conical gear
ActiveCN107321894AReal-time monitoring of precision forging effectMeasurement result influenceUsing optical meansForging press drivesThermal stateLaser probe
Provided are a multi-tooth online detection device and method for precision forging of a straight-tooth conical gear. The multi-tooth online detection device comprises the straight-tooth conical gear, a gear positioning clamp, a positioning clamp rotation mechanism, a base, a lathe body, a vertical sliding platform, a vertical ball screw pair, a horizontal sliding platform, a horizontal ball screw pair, a rotation oil cylinder, a non-contact type laser probe, a laser probe protective cover, a data line and a computer. By adoption of the non-contact type laser probe, the temperature of a workpiece has almost no influence on measurement results. Real-time monitoring of the precision forging effect of the straight-tooth conical gear is achieved through online detection of the chordal tooth thickness, relative height dimension and gear surface defects. The interpolation motion of the vertical sliding platform and the horizontal sliding platform cooperates with the rotation motion of the rotation oil cylinder and the positioning clamp rotation mechanism, online detection of the straight-tooth straight conical gear subjected to precision forging at a high temperature is achieved through the four simple motion mechanisms, and detection accuracy is ensured. The chordal tooth thickness, the forging closed-die height and various gear surface defects of the gear can be detected in a thermal state.
Owner:FIRST TRACTOR
Pretreatment method for carbon-nitrogen stable carbon isotope assay of liquid sample
InactiveCN104483168ASolve the problem of difficult determination of carbon and nitrogen stable isotope valuesMeasurement result influencePreparing sample for investigationMaterial analysis by electric/magnetic meansPretreatment methodMixed oxide
The invention discloses a pretreatment method for carbon-nitrogen stable carbon isotope assay of a liquid sample, belongs to the technical field of sample pretreatment, and aims at solving the problem in a conventional detection method that the errors of the detection result is large or even the result cannot be obtained as the required sampling concentration cannot be reached. The pretreatment method comprises the following steps: I, preparing zeolite powder, II, preparing a liquid sample to be detected; and III, detecting. By adopting the pretreatment method, the requirement on the concentration of carbon-nitrogen is reduced by 10 times when compared with that of a standard automatic liquid sampler feeding method, and the requirement on the size of a sample to be detected is also reduced by 50 times; secondly, zeolite as an additive is a porous silica-alumina mixed oxide which is very low in price and very good in water absorption effect, most importantly the carbon-nitrogen carbon stable isotope assay result is not affected by zeolite, and the steps are simple and easy to operate.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Vertical cylinder liner piston ring friction-wear test device
ActiveCN104777001AImprove reliabilitySimulate the realInternal-combustion engine testingPiston ringPositive pressure
The invention discloses a vertical cylinder liner piston ring friction-wear test device which comprises a motor and an oil supply pipeline. The device is characterized by comprising a friction test device, a heightened clamping jaw, a piston assembly, a positive pressure test device, a chuck base, an oil groove and a heating device. A to-be-tested cylinder liner is cut into three test pieces to be mounted on clamping jaws of an electric centering three-jaw chuck respectively, the clamping jaws clamp the test pieces for radial loading, the friction and lubrication performance of a cylinder liner piston ring is tested through simulation of the load change of the cylinder liner piston ring, and pairing and model selection of cylinder liner piston ring friction pairs are guided accordingly.
Owner:XUZHOU NORMAL UNIVERSITY
Arrangement for weighing transport vehicle load
InactiveCN101133305AWill not materially affect the measurement resultsQuick changeVehiclesSpecial purpose weighing apparatusBogieVertical load
The invention relates to a method for weighing a payload of a transport vehicle, a transport vehicle and a bogie structure. Vertical loads exerted on wheel suspension of the transport vehicle (1) are measured with sensors (19, 24, 27) and the measurement data is conveyed to a calculating unit (20) of weighing. Further, on a side surface of a horizontal arm (12) belonging to the bogie structure (11) there is arranged a sensor (24) for measuring the vertical load exerted on the horizontal arm (12).
Owner:SANDVIK MINING & CONSTR OY
Simple device for testing surface slide angles of fabrics
InactiveCN104515457AAccurate recordSimple structureAngles/taper measurementsMaterial analysisTest sampleEngineering
The invention relates to the field of fabric performances testing, in particular to a device for testing super-hydrophobic fabric slide angles. The device comprises a sample carrier board, a bottom board, rulers and a hand screw. The sample carrier board is used for holding a sample, one end of the sample carrier board is connected with the bottom board through a hinge, and the other end is a free end. A water tank with one end open is arranged on the sample carrier board. Three round holes are arranged in the bottom board, and a nut is arranged at each round hole. The hand screw drives the free end to rotate around the hinge by using the round holes and the nuts as a lifting mechanism. The two rulers are adhered on the bottom board and are used as a fixing unit and a measurement unit. Water drops are dropwise added on the test sample, the positions that the water drops start to slide or stop sliding are observed by raising or lowering of the sample carrier board, readings on the rulers are recorded, and the fabric slide angles are obtained by calculation. The device is simple in structure, easy to operate, low in cost and high in practicality.
Owner:DONGHUA UNIV +1
Capacitive tomography sensor applied to two-phase flow phase distribution measurement of low-temperature fluid
The invention discloses a capacitive tomography sensor applied to the two-phase flow phase distribution measurement of a low-temperature fluid. The device comprises a vacuum insulating pipeline, electrode sheets, a capacitance collection circuit board, a shielding cover, an insulating adhesive layer and a metal flange. According to the device, a vacuum jacket structure is adopted as a sensor measuring section; the electrode sheets are attached onto the outer side of the vacuum jacket; the good heat insulation performance of a low-temperature fluid flowing pipeline is kept, meanwhile, the circuit board can work at a safe temperature; and the low-temperature failure of a measuring circuit is avoided. The capacitive tomography device for the low-temperature fluid can be integrally disassembled and assembled as a modular structure and can be adapted to different measurement pipelines; the capacitive tomography device can be used for a relatively wide temperature section range from room temperature to cryogenic temperature; and a plurality of times of large-range temperature circulation does not influence measurement precision. The capacitive tomography sensor has the advantages of goodanti-stray capacitance capability and good electromagnetic shielding effect.
Owner:ZHEJIANG UNIV
Liquid level sensor by adopting optical fiber bundle and image processing technology
InactiveCN110260946AImprove applicabilityImprove calculation accuracyMachines/enginesLevel indicatorsImaging processingOptical axis
The invention discloses a liquid level sensor by adopting an optical fiber bundle and an image processing technology. The liquid level sensor comprises a light source, an optical fiber bundle and a camera. The light source comprises a light-emitting element; the optical fiber bundle is formed by a plurality of optical fiber probes with different effective degrees, and the effective length refers to the equivalent vertical length of the optical fiber probes; each optical fiber probe is used for representing different liquid level positions and consists of a transmitting optical fiber and a receiving optical fiber, and the transmitting optical fibers and the receiving optical fibers of the optical fiber probes are arranged in parallel and tightly attached together at the detection ends of the optical fiber probes; at the other end of the optical fiber bundle, all the transmitting optical fibers are converged into a bundle, the end face is processed into a plane perpendicular to the optical axis of the optical fibers, and the illuminating light enters all the optical fibers from the end face; all the receiving optical fibers are collected into a bundle, the end face is processed into a plane perpendicular to the optical axis of the optical fibers, and the camera is used for imaging the end face; when the optical fiber probes are in a working state, the other ends, receiving the optical fibers, of the optical fiber probes entering the liquid present low brightness, and the corresponding ends of the optical fiber probes separated from the liquid present high brightness.
Owner:陕西华腾云物联网有限责任公司
Positive sequence capacitance measuring method for parallel circuits
InactiveCN103399212AMeasurement has no effectMeasurement results have no effectResistance/reactance/impedencePower flowThree-phase
The invention relates to a positive sequence capacitance measuring method for parallel circuits, wherein positive sequence capacitance is measured by utilizing a three-phase experiment power supply and a mutual inductance measuring device. The three-phase experiment power supply is connected with a three-phase conducting wire through three connecting circuits respectively, and the mutual inductance measuring device is connected with the connecting circuits respectively through connecting branches; during measurement, a grounding knife switch at the tail end of the three-phase conducting wire is firstly opened, so that the three-phase conducting wire is insulated from the ground; grounding knife switches at the top end of the three-phase conducting wire are respectively opened, a three-phase high-pressure experiment power supply is applied, a central point of the power supply is grounded, the current of each phase, three-phase circuit voltage and three-phase active power are measured through a current transformer and a voltage transformer, and positive sequence capacitance parameters are obtained through calculation. Compared with the prior art, the method is convenient to use and simple for measurement, and the measuring results of positive sequence capacitance are coincident through detection under the condition that adjacent parallel circuits are at different grounding conditions.
Owner:STATE GRID CORP OF CHINA +2
Method for testing water vapor permeability of packaging film
InactiveCN109238940AMeasurement result influenceGuaranteed accuracyPermeability/surface area analysisWater vapor permeabilityWater vapor
The invention relates to the technical field of thin-film solar cells, in particular to a method for testing the water vapor permeability of a packaging film. According to the method for testing the water vapor permeability of the packaging film, a protective layer is arranged on the packaging film; the packaging film is extruded in two cavities, and a relatively large extrusion force is applied;the extruded position of the packaging film is the protective layer; the protective layer is made of an organic material, so that the problem that a measurement result of the water vapor permeabilityof the packaging film has an error because part of water vapor penetrates through the damaged position due to the fact that the packaging film is extruded to be damaged due to excessively high pressure can be prevented, and the accuracy of the measurement of the water vapor permeability of the packaging film can be guaranteed. Meanwhile, compared with the water vapor permeability of the packagingfilm, the protective layer can be considered to be completely permeable, so that the addition of the protective layer does not influence a test result of the water vapor permeability of the packagingfilm.
Owner:DONGJUN NEW ENERGY CO LTD
Illumination intensity detection device for agricultural big data
InactiveCN111811646AIncrease light intensityEasy to control scientificallyPhotometry for measuring solar lightNitrogen dioxideDust control
The invention belongs to the technical field of agricultural big data, in particular to an illumination intensity detection device for agricultural big data. The device comprises a lighting box and alight intensity detector. The top surface of the lighting box is a transparent glass plate; a transparent box body which is horizontally arranged is mounted in the lighting box; the transparent box body is filled with mixed gas of nitrogen dioxide and nitrogen tetroxide; a photovoltaic panel is mounted at the bottom of the transparent box body; an adjusting cylinder which is vertically arranged ismounted on the side wall of the lighting box; an electromagnet is installed at the bottom of the adjusting cylinder, an induction coil is wound around the electromagnet and electrically connected with the photovoltaic panel, a permanent magnet ring is slidably connected to the inner side wall of the adjusting cylinder, and the upper end of the permanent magnet ring is fixedly connected with the inner top face of the adjusting cylinder through a reset spring. The device can detect the illumination intensity at different heights, facilitates the scientific regulation and control of the plantingdensity and interval of two types of crops, can achieve the automatic dust removal, and avoids the measurement result error caused by the shielding of dust.
Owner:张佳佳
A kind of liquid sample carbon and nitrogen stable carbon isotope determination pretreatment method
InactiveCN104483168BSolve the problem of difficult determination of carbon and nitrogen stable isotope valuesMeasurement result influencePreparing sample for investigationMaterial analysis by electric/magnetic meansMixed oxideAutosampler
A liquid sample carbon and nitrogen stable carbon isotope determination pretreatment method. The invention belongs to the technical field of sample pretreatment, and in particular relates to a pretreatment method for measuring carbon and nitrogen stable carbon isotopes of liquid samples. The invention aims to solve the problem that the error of the detection result is large or even the result cannot be detected due to the insufficient concentration of the injection sample in the existing detection method. Methods: 1. Preparation of zeolite powder; 2. Preparation of liquid sample to be tested; 3. Detection. The method of the invention requires 10 times lower requirements on the concentration of carbon and nitrogen in the liquid than the standard liquid automatic sampler injection method, and also reduces the requirement on the volume of the sample to be tested by 50 times. Secondly, the zeolite used as an additive is a porous silicon-aluminum oxide, which is very cheap and has a very good water absorption effect. More importantly, it will not affect the determination results of carbon and nitrogen stable isotopes, and the steps are simple and easy to operate.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Double-tail-fiber fiber bragg grating temperature sensor protection device
PendingCN108917952APlay a protective effectAvoid destructionThermometer detailsThermometers using physical/chemical changesFiberGrating
The invention discloses a double-tail-fiber fiber bragg grating temperature sensor protection device. The double-tail-fiber fiber bragg grating temperature sensor protection device comprises an uppershell, a lower shell and a sensor body, wherein the upper shell and the lower shell are rotationally connected through a rotating shaft; and a handle is arranged at the joint of the upper shell and the lower shell, and the handle is provided with a handle lock. The protection shells of the sensor are in use, the design plays a protective role on the sensor body and prevents the negative effects ofwavelength drift, reflectivity drop and the like of a fiber bragg grating due to the action of external stress on the sensor during the work of the sensor body, at the same time, the sensor and connected optical cables are prevented from being damaged in the construction process, and the normal acquisition and transmission of signals can be ensured. According to the design of shock absorbing devices, the phenomenon of optical fiber damage caused by shaking of an upper box body shell and a lower box body shell in the installation process can be relieved. According to the design of rubber padsand a sponge layer, dust in the air can be prevented from entering the sensor and affecting a measurement result, and the service life is prolonged.
Owner:合肥云联电子科技有限公司
Device and method for measuring air flow of inner cavity of multi-union guide vane
PendingCN114199316AAvoid double clampingSolve wear and tearGas-turbine engine testingAerodynamic testingAviationEngineering
The invention discloses a device and method for measuring the air flow of inner cavities of multi-connected guide blades of an aero-engine. The blade inner cavities of the guide blades are isolated through an isolation assembly to form a front cavity and a rear cavity; the guide blade is fixed through the fixing assembly; meanwhile, the shape of the cross section of the front air inlet pipeline is matched with that of the front air inlet, and the shape of the cross section of the rear air inlet pipeline is matched with that of the rear air inlet, so that the influence on the measurement result caused by flow limitation is avoided; compared with the prior art, the flow distribution assembly is used for distributing and conveying flow, the problem of air leakage caused by abrasion of a hose is solved, and the flow measurement efficiency is high. According to the scheme, through mutual cooperation of the isolation assembly, the fixing assembly and the separation assembly, measurement of the air flow passing through the inner cavity of the multi-union guide vane is rapidly and efficiently completed, compared with the prior art, the problems that a hose is prone to abrasion, and flow limiting and air leakage are avoided are solved, and the measurement result is high in accuracy; meanwhile, the passing condition of air flow in a local area can be reflected, and local burning is avoided.
Owner:CHINA HANGFA SOUTH IND CO LTD
Nuclear power plant conventional island valve fault monitoring device
PendingCN113202931ASimple structureEasy to useFiltration separationLift valveNuclear plantStructural engineering
The invention relates to a nuclear power plant conventional island valve fault monitoring device which comprises a valve body, a valve cover and a valve element. An inlet and an outlet are formed in the two sides of the interior of the valve body respectively, a fixing circular ring is arranged on the inlet of the valve body, a filtering sieve plate and a monitoring assembly are arranged in the fixing circular ring, and the monitoring assembly comprises a box body, a distance sensor, a supporting rod, a single-chip microcomputer and an alarming device; a piston is arranged in the box body, the right side of the piston is provided with a distance measuring ball, the distance measuring ball corresponds to the distance sensor, the right end of the supporting rod transversely penetrates through the top of the box body and is connected with the left side of the piston, the right end of the supporting rod is connected with the edge of the filtering sieve plate, the two ends of an elastic piece are fixedly connected with the top of the box body and the filtering sieve plate respectively, and the distance sensor is connected with the single-chip microcomputer; and the single-chip microcomputer is connected with the alarming device. By means of the nuclear power plant conventional island valve fault monitoring device, the problems that an alarm cannot be given out in time when the interior of a valve of an existing nuclear power plant is blocked, workers cannot take corresponding measures in time, serious accidents occur, and the using requirements of the nuclear power plant cannot be met are effectively solved.
Owner:HAINAN NUCLEAR POWER
Analytical tail gas recovery device
InactiveCN114749122ASo as not to damageMeasurement result influenceInert gas productionMaterial analysisPressure stabilizationEngineering
The invention relates to the field of tail gas recovery, in particular to an analysis tail gas recovery device which comprises a tail gas gathering unit and a negative pressure extraction unit, the tail gas gathering unit communicates with a gas analyzer, a first pipeline is arranged at the end, away from the gas analyzer, of the tail gas gathering unit, and one end of the negative pressure extraction unit is connected to the first pipeline; the other end of the analysis tail gas recovery device is connected with the industrial treatment device; the analysis tail gas recovery device further comprises an atmosphere emptying unit and a pressure supplementing unit; the atmosphere emptying unit is used for emptying redundant pressure in the first pipeline, and the atmosphere emptying unit is located at the end, away from the tail gas gathering unit, of the first pipeline and communicates with the first pipeline; the pressure supplementing unit is used for maintaining the pressure in the first pipeline to be stable and comprises a pressure stabilizing supplementing piece and a pressure regulator, and the pressure regulator is located between the pressure stabilizing supplementing piece and the first pipeline and communicates with the pressure stabilizing supplementing piece and the first pipeline. According to the invention, normal pressure and stable pressure states can be kept in the first pipeline.
Owner:BEIJING KALOON ANALYTICAL INSTR
A vertical cylinder liner piston ring friction and wear test device
ActiveCN104777001BImprove reliabilitySimulate the realInternal-combustion engine testingPositive pressurePiston ring
A vertical cylinder sleeve piston ring friction-wear test device comprises a motor (1) and an oil supply pipe (2), and further comprises a friction force test device (3), a raised holding jaw (5), a piston assembly (6), a positive pressure test device (7), a chuck base (8), an oil storage tank (9) and a heating device (10). A cylinder sleeve to be tested is cut into three test pieces (4) respectively mounted on the holding jaws (5) of a centered electrically powered three-jaw chuck, the raised holding jaws (5) clamping to apply a radial load. A load change between cylinder sleeve piston rings is simulated to test friction and lubricity performance thereof, so as to guide the pairing and selection of a cylinder sleeve piston ring friction pair model.
Owner:XUZHOU NORMAL UNIVERSITY
Efficient 1-Wire temperature sensor testing tool
PendingCN113340471AEasy to testMeasurement result influenceThermometer testing/calibrationCircular discEngineering
The invention discloses an efficient 1-Wire temperature sensor testing tool in the field of temperature sensors, which comprises a workbench, a heat conduction ring is mounted in the middle of the workbench, a heating device is mounted in the heat conduction ring, four heat conduction devices are uniformly distributed on the outer ring of the heat conduction ring, and each heat conduction device comprises a threaded sleeve, a threaded rod, a ball and a disc. The threaded sleeve is installed on the outer circle of the heat conduction ring, a threaded rod extending to the outside of the threaded sleeve is installed in the threaded sleeve and connected with the threaded sleeve through a plurality of balls, the end of the threaded rod is connected with the disc, four installation frames are installed on the workbench and evenly distributed about the circle center of the heat conduction ring, a temperature sensor body corresponding to the heat conduction device is installed in each installation frame, and a positioning device used for fixing the temperature sensor body is installed in each installation frame. According to the invention, a plurality of temperature sensors can be tested at the same time, and the working efficiency is higher.
Owner:JIANGSU SEVEN DIMENSIONAL TEST TECH CO LTD
Thickness meter
ActiveCN103424078BMeasurement result influenceHigh measurement accuracyUsing optical meansMeasuring instrumentAccuracy and precision
A film thickness measuring instrument for measuring film thickness of a wafer (210), an airflow generator is set on one side of a beam adjusting box (240) and a wafer supporting platform (220) of the film thickness measuring instrument, the airflow generator is used for generating airflow between the beam adjusting box (240) and the wafer supporting platform (220), The airflow blows away the volatilizing gas from the wafer (210), and avoids or reduces the volatilizing gas from the wafer (210) entering the beam adjusting box (240), therefore, lens in the beam adjusting box (240) will not be easily polluted, the measuring result will not be affected, the measuring precision will be improved.
Owner:CSMC TECH FAB2 CO LTD
Electric pole inclination measuring system
The invention discloses an electric pole inclination measuring system. The system comprises a supporting plate, a host and a shell, the upper surface of the supporting plate is fixedly connected witha main machine. The shell is fixedly connected to the lower surface of the supporting plate, a mounting plate is fixedly connected to the right side face of the supporting plate, a first bearing is clamped to the upper surface of the mounting plate, a first rotating shaft is sleeved with the first bearing, a connecting rod is fixedly connected to the outer surface of the first rotating shaft, andthe connecting rod is in an L shape. In the electric pole inclination measuring system, a supporting plate, a shell and a pointer are arranged, the support plate is fixed on an electric pole; if the electric pole is inclined, the pointer is perpendicular to the ground due to the influence of gravity, the pointer is not located at the position of the original scale on the shell any more, a worker can calculate the inclination of the electric pole according to the degree between the pointer and the original scale, the weight of the pointer can be increased by arranging the balancing weight, andtherefore the pointer can be quickly perpendicular to the ground, and the accuracy is improved.
Owner:STATE GRID HEBEI ELECTRIC POWER CO LTD +1
Online detecting device for liquid flow of gas-liquid mixture
InactiveCN107817024ASimple measuring principleAccurate measurementVolume/mass flow by dynamic fluid flow effectFuel tankEngineering
The invention discloses an online detecting device for the liquid flow of a gas-liquid mixture. The device comprises a liquid inlet pipe, a second valve, a first valve, a third valve, a second switch,a first switch, a first soft rope, a first floating ball, a second soft rope, a second floating ball, a detection oil box, a fifth valve, an exhausting pipe, a seventh valve, a sixth valve, an auxiliary oil box, a fourth floating ball, a fourth soft rope, a third floating ball, a third soft rope, a third switch, a fourth switch, a fourth valve and a liquid drainage pipe. According to the device,oil feeding and liquid drainage of the detection oil box and the auxiliary oil box are controlled by controlling the open and closed states of the valves, the switches are triggered through the floating balls and the soft ropes, then the liquid levels in the oil boxes are detected, and the open and closed states of the valves are controlled according to the liquid levels. The device has the main advantages that the liquid flow in produced liquid is measured in a mechanical mode through coordination action of the switches and the valves, so that effects of the adhesivity of gas and crude oil inthe produced liquid on the measurement result are avoided, the measurement principle is simple, and the result is accurate.
Owner:SOUTHWEST PETROLEUM UNIV
Determination equipment for formaldehyde in ambient air
PendingCN114354590AAffect the detection effectReduce labor intensityMaterial analysis by observing effect on chemical indicatorEngineeringMechanical engineering
The invention discloses measuring equipment for formaldehyde in ambient air, which comprises a device box and a mounting bin, a connecting pipe penetrating through the side walls of the two ends is mounted in the device box, a fixing plate is mounted in the connecting pipe, a first filter screen is arranged in the fixing plate, a first heat dissipation fan is mounted in the connecting pipe, and a second filter screen is mounted in the first heat dissipation fan. A storage box is installed at the bottom end of the interior of the device box, a fixing frame is installed at the top end of the storage box, a supporting plate is installed at the top end of the fixing frame, a threaded hole is formed in the supporting plate, and a ventilation pipe is installed at the top end of the device box. According to the equipment for measuring the formaldehyde in the ambient air, the scraper main body is attached to the first filter screen, so that dust and batting adhered to the first filter screen can be cleaned while the scraper main body rotates, and the situation that the dust and batting enter the device box through the connecting pipe, and consequently the formaldehyde measuring result is affected is avoided.
Owner:湖南吉大检验检测有限公司
Circuit and method for measuring voltage coefficient of voltage transformer
ActiveCN103267958BMeasurement result influenceStable output voltageElectrical measurementsSingle stageUltra high voltage
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Intelligent detection device for detecting concentration of heavy metal ions in liquid food
PendingCN112730764AAvoid the problem of inaccurate measurement resultsAvoid cost wasteTesting foodRadiationEngineeringBiology
The invention discloses an intelligent detection device for detecting the concentration of heavy metal ions in liquid food. The intelligent detection device comprises a shell, a box body is fixed to the outer surface of one side of the shell, a quantifying mechanism is fixed into the shell, a driving mechanism is arranged on the bottom surface of the interior of the shell, and protective shells are rotatably connected to the tops of the shell and the box body. According to the intelligent detection device, when heavy metal detection is carried out on liquid food, a user can open the sealing cover, pour a medicament into the medicament barrel and then reset the sealing cover to transfer the position of liquid medicine, and then the user can rotate the rotating handle to drive the first gear to rotate, and when the first gear rotates, the relative positions of a second through hole formed in the top of the first gear and a first through hole formed in the top of the rubber pad can be adjusted, and the medicine discharging amount of medicine is adjusted through the device according to the fact that the positions of the first through hole and the second through hole are different.
Owner:朱辉
Ultraviolet absorption air chamber assembly
PendingCN112432913AFor quick replacementAvoid breakingColor/spectral properties measurementsUv absorbanceEngineering
The invention discloses an ultraviolet absorption air chamber assembly which comprises a base and an air chamber assembly detachably connected with the base, the base comprises a lamp holder used forinstalling a lamp source and a connector used for being connected with a light transmission piece, the light outlet end of the lamp holder is detachably connected with the light inlet end of the air chamber assembly, and the light outlet end of the air chamber assembly is detachably connected with the light inlet end of the connector. The air chamber assembly is not directly connected with an optical fiber at the light outlet end, in the process of disassembling the air chamber assembly, the whole disassembling process is simple, cleaning is facilitated, and in the disassembling process, the situation that an optical fiber interface at the light outlet end is damaged or the light intensity of a light source is obviously changed due to light path change is avoided; a direct coupling mode isadopted between the air chamber assembly and the light source, so that optical fibers between the light source and the air chamber assembly is removed, the light source end is prevented from converging the light source into the optical fibers in a complex light condensation mode, and the phenomena of unstable lighting performance, insufficient light intensity introduction and the like caused by aging of the optical fibers at the light inlet end are improved.
Owner:CHONGQING CHUANYI ANALYZER CO LTD
Stream type cell detection device and its accomplished stream type cell detection method
ActiveCN101236149BReduce distortionShorten the timeIndividual particle analysisBiological testingBiochemical engineeringInjector
Owner:SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
Mask plate, manufacturing method of display substrate, display substrate and display device
ActiveCN105867066BMeasurement result influenceOriginals for photomechanical treatmentDisplay deviceEngineering
The invention provides a mask plate, a manufacturing method of a display substrate, the display substrate and a display device. The mask plate comprises a first mask pattern and a second mask pattern, wherein the first mask pattern is used for manufacturing a display pattern on a substrate body, the second mask pattern is used for manufacturing a marking pattern on the substrate body, and the marking pattern is used for determining the center offset, relative to the substrate body, of the display pattern. The mask plate has the advantages that by the second mask pattern, the marking pattern can be manufactured on the substrate body while the display pattern is manufactured on the substrate body, and the center offset, relative to the substrate body, of the display pattern can be determined by the marking pattern; the influence, caused by the bad geometrical shape of the edge of a glass substrate, on measuring results can be avoided as compared with an existing center offset measuring manner, and the center offset of each exposure region of the substrate body can be measured.
Owner:BOE TECH GRP CO LTD +1
A dynamic gap measuring instrument and its measuring method
InactiveCN105937875BEffects and Significant ImprovementsSignificant progressUsing electrical meansVibration controlMeasuring instrument
The invention relates to a dynamic clearance measuring instrument and a measuring method. The dynamic clearance measuring instrument comprises a clearance probe (4), an excitation assembly and a displacement measuring assembly; the excitation assembly comprises a vibrator (6), a vibrator fixing rod (7) and a vibration control loop (5), wherein the vibrator (6) is arranged on the vibrator fixing rod (7); the displacement measuring assembly includes an eddy current displacement sensor (3) and a displacement sensor fixing rod (2); the clearance probe (4) used for measuring a clearance is sheathed with the vibration control loop (5); the vibration control loop (5) is connected with the vibrator (6), so that the vibration response of the vibrator (6) can be transmitted to the clearance probe (4); and the eddy current displacement sensor (3) arranged on the displacement sensor fixing rod (2) measures the displacement response of the clearance probe (4).
Owner:XI AN JIAOTONG UNIV
Interference heat transport type flow measuring device and measuring method thereof
InactiveCN100422692CMeasurement result influenceVolume/mass flow by thermal effectsMeasurement deviceEngineering
The present invention provides a disturbed heat output type flow measuring device and a measuring method and the present invention relates to a method of measuring the liquid flow in the flow field having a heat transmitting process in the inner of the pipe-case type heat interchanger and the corresponding device. The heat transferring pipe (6) of the measuring device is positioned in the field of the flow to be measured; the pipe-case type heat interchanger hydroeciums (5) are positioned on the two ends of the heat transferring pipe (6); each end of a measuring heat interchanger is provided with a set of disturbed operational servo (1); a flexible piston valve (2) is provided on the head of the valve pole of the disturbed operational servo (1); a temperature measuring sensor which is connected to an industrial personal computer (4) through a temperature measuring module (7) is embedded on the two ends of the inner of the measuring heat interchanger along the axes direction of the piston valve (2), thus, a set of moveable probe head for measuring is formed; the output end of the industrial personal computer (4) controls the movement of the disturbed operational servo (1) by connecting to an electromagnetic valve (10) through a switch control module (8) and a relay group (9) and by connecting the output end of the electromagnetic valve (10) to the disturbed operational servo (1) through a hydraulic tube (13).
Owner:SOUTHEAST UNIV
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