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56results about How to "Suitable for on-site operation" patented technology
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Hand-held time synchronization tester
ActiveCN104102122AEasy to operateStable structureSynchronous motors for clocksRadio-controlled time-piecesHuman–machine interfaceHand held
A hand-held time synchronization tester is provided. The hand-held time synchronization tester comprises a signal pre processing unit, a protocol receiving inspection unit, a main control unit, a measuring unit and a man-machine interface unit. The hand-held time synchronization tester also comprises a PPS / PPM / PPH pulse signal decoding unit, an IRIG-B (AC / DC) TTL / 422 time signal decoding unit, an RS232 / 485 time frequency signal decoding unit, a timed equipment alarm information decoding unit, and a controllable synchronization signal output and message automatic analysis unit. According to the hand-held time synchronization tester of the invention, integrated measurement technologies are adopted. The hand-held time synchronization tester is integrated with functions such as time and frequency standard and measurement data calculation and comparison as well as test result display, storage and output. With the hand-held time synchronization tester adopted, integrated test items including PPS / PPM / PPH accuracy, second pulse rising edge, serial port data accuracy, pulse signal accuracy, IRIG-series time message accuracy, serial protocol format correctness, PTP and NTP / SNTP synchronization accuracy, serial port time tick message transmitting delay measurement and the like can be completed. The hand-held time synchronization tester of the invention is applicable to field time synchronization tests of intelligent substations.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
Method and apparatus for testing stress of cavern wall
InactiveCN1963423AReduce measurement errorSuitable for on-site operationMining devicesForce measurementRock coreTangential stress
This invention discloses one spot measurement carve stress test method and device for channel stress test, which uses one same rock core and stress for stress elimination measurement and stress restore device, wherein, the rock wall stress test device comprises upper and down saddle pressure blocks to form round hole size and its load rock chip diameter matched; the saddle arc size is smaller than semi-round; the upper and down saddle pressure blocks arc tank and rock chip are set with at least one layer of film underlay pad.
Owner:SICHUAN UNIV
Method for utilizing and disposing micro-electrolyzed waste residue of organic waste water and method for immobilizing arsenic and heavy metal in soil
InactiveCN101791624AEfficient disposalEnhance agricultural securityContaminated soil reclamationWater/sewage treatmentActivated sludgeElectrolysis
The invention relates to a method for utilizing and disposing micro-electrolyzed waste residue of organic waste water, a method for immobilizing arsenic and heavy metal in soil and a method for utilizing and disposing micro-electrolyzed waste residue and activated sludge of organic waste water. The invention is characterized in that iron carbon is used as main filler for the micro electrolysis of the organic waste water, the waste residue (solids) produced after the micro electrolysis of the iron carbon is collected, concentrated and mixed with the activated sludge, inorganic / organic mixed restoration agent is prepared after 10-50 days of composting treatment are conducted, the weight of the iron in the restoration agent accounts for (0.5-20) percent of the total weight of the solids, finally deep tillage is conducted to restore the pollution soil after the restoration agent is evenly dispersed in soil, and the weight ratio of the restoration agent to the polluted soil is (0.1-5.0):100.
Owner:CENT SOUTH UNIV
Welding device and method for superconducting lines
ActiveCN102941387AAchieve weldingApply pressure evenlyLine/current collector detailsHeating appliancesTemperature controlEngineering
The invention relates a welding device and method for superconducting lines. The welding device comprises a heating unit, a welding bedplate, heat insulation blocks and a pressing unit with a support body, wherein the welding bedplate is fastened on the heating unit; the heating unit is provided with a heater and a temperature adjustor; the pressing unit is mounted on the welding bedplate and further comprises pressing pieces and the heat insulation blocks; and the pressing pieces are mounted on the support body and used for pressing a welding head, and the heat insulation blocks are arranged between the welding bedplate and the support body. The welding device and method for the superconducting lines provided by the invention have the advantages of having a large temperature-controlled range, being high in precision, being capable of meeting the temperature control requirement on the welding of the superconducting lines, and further being capable of improving welding quality and alleviating welding dispersiveness through reducing the thickness of a welding layer, enlarging welding area, lowering welding resistance and reducing artificial operation factors.
Owner:中国船舶重工集团公司第七一二研究所
Preparation method of antarctic krill oil
ActiveCN102559369AEasy to operateReduce dosageFatty-oils/fats productionAlkaline proteaseMaximum level
The invention discloses a preparation method of antarctic krill oil, which comprises the following steps: directly homogenizing harvested fresh live antarctic krill, and allowing low-temperature autolysis of the homogenate after ultraviolet irradiation; adding water, sodium chloride and ethanol to the low-temperature autolyzed homogenate, heating the homogenate after ultraviolet irradiation treatment to 30-65 DEG C in a gradient manner, and allowing high-temperature autolysis; performing ultrasonic treatment of the high-temperature autolyzed homogenate, adjusting pH, adding alkali protease for extraneous enzyme enzymolysis; and adding n-hexane to the enzymatic hydrolysate to extract krill oil. The method of the invention is especially suitable for operation immediately in a fishing boat after the fresh live antarctic krill are harvested. The method is simple in operation and has high efficiency. Especially, the use amount of the extraneous enzyme is reduced by using the strong autolysis capacity of the fresh live antarctic krill, so as to reduce production cost. The extraction method has mild conditions, so that some original physiologically active substances in the krill oil can be stored at a maximum level, and the product is both nutritional and functional.
Owner:DALIAN POLYTECHNIC UNIVERSITY
Method for controlling DI material edge drop for six-roller mill
ActiveCN103934277AStable edge drop control capabilityQuality improvementRoll mill control devicesMetal rolling arrangementsEngineeringStrip steel
The invention discloses a method for controlling a DI material edge drop for a six-roller mill. The roller shapes of a pair of middle rollers of the six-roller mill are made to meet a curve f(x), the middle rollers comprise the upper middle roller arranged above strip steel and the lower middle roller arranged below the strip steel, the upper middle roller and the lower middle roller respectively comprise a first segment used for controlling the edge drop and a second segment not involved in edge drop control, the first segment of the upper middle roller is located on the drive side of the six-roller mill, the first segment of the lower middle roller is located on the work side of the six-roller mill, meanwhile, the upper middle roller moves by s from the drive side to the work side in the axial direction of the upper middle roller, the lower middle roller moves by s from the work side to the drive side in the axial direction of the lower middle roller by s, and then rolling is started. According to the technical scheme, the roller shapes meeting the curve f(x) are arranged on the middle rollers of the six-roller mill, control over the channeling roller quantity of the middle rollers is coordinated, the problem that thickness distribution of DI materials in the length and width direction is not even is solved, and the good control effect on the DI material edge drop is achieved.
Owner:BAOSHAN IRON & STEEL CO LTD +1
Tool box and kit for rapid extraction of nucleic acid, and method for rapid extraction of nucleic acid
ActiveCN104073429ASuitable for on-site operationTo achieve the separation effectBioreactor/fermenter combinationsBiological substance pretreatmentsLysisElution
The invention provides a tool box and a kit for rapid extraction of nucleic acid, and a method for rapid extraction of nucleic acid, which are mainly used for rapidly extracting nucleic acid (including RNA and DNA) from various clinical samples. According to the invention, a nucleic acid extraction device and a reagent are combined as an integrative device which mainly comprises an injection syringe, a hollow adaptor, a nucleic acid adsorbed film tube, a sample adding needle, various pipes for accommodating different reagents, a pipe frame and other parts; a pure nucleic acid solution for downstream experiments can be obtained through the following steps of lysis treatment on a clinical sample, suction by the injection syringe, adsorption of nucleic acid by a nucleic acid adsorbed film, rinse of the nucleic acid adsorbed film with a rinse liquid, elution of nucleic acid with an eluant, and the like.
Owner:INST OF PLA FOR DISEASE CONTROL & PREVENTION
Safety valve on-line detector driven by stepping motor
InactiveCN102435425AEasy to carryAccurate clamping and positioningMachine part testingMeasurement of fluid loss/gain rateSafety valveElectrical and Electronics engineering
The invention provides a safety valve on-line detector driven by a stepping motor. The safety valve on-line detector comprises a mechanical fixture system used for fixing a detecting device on a safety valve, a stepping motor system used for providing the tension needed for lifting the safety valve, and an electric detecting system used for transmitting feedback data of the stepping motor system and controlling the stepping motor system. The safety valve on-line detector has the advantages that the accuracy and the repeatability of the safety valve on-line detector are higher, the carrying and the mounting are facilitated, the detachment is convenient, the verification is rapid, and the judgment is objective and accurate.
Owner:ZHEJIANG UNIV OF TECH +1
Vacuum infusion process of large winding in soft mold
InactiveCN1469401ASolve the sealing problemMeet the requirements of vacuum pressure impregnationCoils manufactureVacuum pumpingTemperature control
The vacuum impregnation process of large winding in soft mold features the technological process comprising mounting guiding board, glue pouring gate and riser; combining guiding board and winding and coating with self-dissolving sealing belt; painting liquid sulfurized silicone rubber to form sealed cavity; vacuum and leak repairing; mounting outer winding mold, vacuum pumping in winding, depositing sulfurized silicone rubber into between the self-dissolving sealing belt and the outer winding mold and curing to form; winding electrical heating belt outside the outer mold and connecting temperature control instrument; winding heat insulating layer outside the electrical heating belt; and connecting vacuum system to the riser and glue feeding system to the glue pouring gate. The present invention utilizes vacuum bag for sealing mold, and has simple mold design and lowered cost.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
Electrochemical preparation reactor for water treatment medicament with flocculation and disinfection effect
InactiveCN101058447ABoth flocculationWith disinfection effectWater/sewage treatment by electrochemical methodsWater/sewage treatment using germicide/oligodynamic-processAluminium chlorideFlocculation
The invention discloses an electrolytic reactor of water disposing agent with flocculating and sterilizing action, which comprises the following parts: electrolytic groove, anode and cathode of stable shape electrode material, circulating system of electrolyte, electric potential monitoring system of anode, DC power and circuit connecting system, tail gas collecting system, wherein the aluminium chloride or polymeric aluminium solution with low alkaline degree is added into electrolytic groove with the DC power opened, which finishes the making course after reacting for a while. The reactor equipment possesses compact equipment, simple operation, which is fit for on-site adding.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Fastening ring made of wide thermal hysteresis Ti-Ni-based shape-memory alloy, preparation method and application thereof
InactiveCN1763233AFasten the connectionImprove connection strengthOther manufacturing equipments/toolsHose connectionsElectrical resistance and conductanceShape-memory alloy
The present invention discloses one kind of fastening ring of wide heat hysteresis TiNi-base shape memory alloy and its preparation and apply. The alloy consists of in atom% Ti 42-47, Ni 44-49, Nb 6-13 and Zr 0.1-3. The preparation process includes smelting in vacuum MF inducing electric furnace and casting ingot; homogenizing at 800-1000 deg.c for 3-5 hr; forging at 800-900 deg.c; hot rolling at 800-900 deg.c; annealing at 800-900 deg.c for 10-60 min and cooling inside the furnace to room temperature; and machining to obtain finished product. The present invention realizes fastening and connection by means of the recovering characteristic of shape memory alloy, and the fastening and connection method has the advantages of high strength, small connection resistance, etc.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Connecting tube, hard tube connector structure as well as device and method for machining connecting tube
ActiveCN104235536AImprove sealingHigh pressure levelSleeve/socket jointsOther manufacturing equipments/toolsEngineeringMechanical engineering
The invention discloses a hard tube connector structure for a hydraulic system, a connecting tube as well as a device and a method for machining the connecting tube. The connecting tube and the hard tube connector structure can be applied to a system with the pressure grade reaching up to 1100MPa and flow rate, and are reliable in sealing and very high in pressure grade; the sealing effect is not influenced after the connecting tube and the hard tube connector structure are repeatedly used for a plurality of times. The device and the method can be used for conveniently manufacturing the connecting tube, and are simple in operation, thus being suitable for field operation.
Owner:GUANGDONG HUAYE POWER TECH
Calibration method and device of three-dimensional laser scanning system, and computer equipment
ActiveCN113494893AImprove efficiencyEasy to operateImage analysisUsing optical meansLaser transmitterVertical plane
Embodiments of the invention provide a calibration method and device for a three-dimensional laser scanning system, and computer equipment. The three-dimensional laser scanning system comprises a camera, a laser transmitter and a calibration block with step surfaces. The calibration method comprises the following steps: acquiring laser stripes of the calibration block with the step surfaces by adopting the camera which has been calibrated; extracting the center of the laser stripes, and segmenting the laser stripes on each step surface to obtain point sets of planes and vertical planes; calculating height errors between the horizontal planes of the step surfaces and width errors between the vertical planes of the step surfaces through the point sets of the planes and the vertical planes; establishing an optimization function by adopting the height errors between the horizontal planes of the step surfaces and the width errors between the vertical planes of the step surfaces; and solving the optimization function through a trust region algorithm to obtain parameters of a laser plane. According to the invention, the calibration and parameter optimization of a line laser three-dimensional measurement system can be completed only by using one step surface, operation is simple, efficiency is high, the method is suitable for field operation, and a result is accurate.
Owner:深圳广成创新技术有限公司
Scanning, weighing and bagging integrated machine and use method
PendingCN108580318AQuick snapReduce labor intensitySortingPackaging machinesData managementOperation mode
The invention relates to a scanning, weighing and bagging integrated machine and a use method. The scanning, weighing and bagging integrated machine are applicable to the logistic express industry andaims at solving the problems that a fixed operation mode in the express industry is that each express package is scanned twice and weighed once, the working intensity of people is high, the cost is high, and the efficiency is low. The machine is characterized in that an industrial control touch device, a scanning device and a weighing platform are connected to a controller, wherein the scanning device is arranged on the top part of a rack and is used for scanning each express package and is capable of transmitting a plurality of scanning rays while scanning; the weighing platform is arrangedat the bottom part of the rack; the industrial control touch device is arranged at the upper part of the rack and is used for performing data management and man-machine interaction; and the controlleris used for acquiring a bar code and inputting weight data. According to the machine, a complete new operation method is carried out; existing scanning weighing and scanning bagging processes are integrated to form a scanning, weighing and bagging integrated process, and previous scanning weighing link is saved. Therefore, lots of labors, times and costs can be saved; and the efficiency is greatly improved.
Owner:浙江京能电力设备有限公司
Colorimetric kit for rapidly detecting chicken egg-yolk antibody
ActiveCN109490293ASuperparamagneticMonitor product qualityMaterial analysis by observing effect on chemical indicatorColor/spectral properties measurementsRoom temperatureDopamine
The invention discloses a colorimetric kit for rapidly detecting a chicken egg-yolk antibody. The colorimetric kit comprises a magnetic molecularly imprinted polymer. The magnetic molecularly imprinted polymer is prepared by the following method steps: 1) preparing Fe3O4 NPs with uniform size; 2) adding the Fe3O4 NPs into Tris buffer, performing ultrasonic dispersion, adding 1-5mg of egg yolk antibody and 2-5mg of dopamine, and mechanically stirring at a room temperature for 6-12 hours; 3) washing, and performing vacuum drying, thereby obtaining the magnetic molecularly imprinted polymer. Themagnetic nano-particle Fe3O4 NPs is prepared by the following steps: dissolving 2.7g of FeCl3*6H2O and 7.2g of NaAc into 100mL of ethylene glycol while intense stirring, sealing, reacting at a high temperature, cooling to a room temperature, and performing magnetic separation so as to obtain black magnetite particles; and washing, and performing vacuum drying, thereby obtaining the magnetic nano-particle Fe3O4 NPs.
Owner:JILIN UNIV
Method for quickly detecting whether nitrite content of processing meat product exceeds standard or not
ActiveCN106370649AShort timeSuitable for on-site operationMaterial analysis by observing effect on chemical indicatorShake upNational standard
The invention discloses a method for quickly detecting whether the nitrite content of a processing meat product exceeds the standard or not. The method comprises the following steps: 1) weighing 0.1 to 0.5 g of aminobenzene sulfonic acid, adding 50 mL of hydrochloric acid at the concentration of 15% to 25% v / v and mixing uniformly; 2) weighing 0.05 to 0.15 g of naphthodiamide hydrochlorid, adding 50 mL of water and mixing uniformly; 3) cutting up a to-be-detected sample, adding a proper amount of water, absorbing liquid on the upper layer and filtering to obtain to-be-detected sample liquid; 4) adding a few drops of the solution obtained in the step 1) into the to-be-detected sample liquid in the step 3), adding a few drops of the solution obtained in the step 2), shaking up and observing the color after 1 minute. The method for quickly detecting whether the nitrite content of the processing meat product exceeds the standard or not, provided by the invention, is summarized by performing a large number of experiments on the national standard detection method. Large-scale equipment is not needed in the method provided by the invention; furthermore, short time is taken and the experimental result can be obtained within 5 minutes, so that the method is very suitable for on-site operation.
Owner:广东省药品检验所
Method for concentrating and detecting norovirus in water based on aminated silica gel
ActiveCN106190987AEnrichment efficiency is stableEasy to operateSsRNA viruses positive-senseMicrobiological testing/measurementWater basedCentrifugation
The invention discloses a method for concentrating and detecting norovirus in water based on aminated silica gel. The method comprises the following steps: mixing a norovirus containing polluted water sample to be detected with amination silica gel, carrying out oscillation incubation for 2 hours at a temperature of 20 to 30 DEG C under a pH value of 5 to 10, after incubation, performing centrifugation, soaking the precipitate in a BGT eluent for 15 to 30 minutes, wherein during the soaking period, an ultrasonic treatment (20-25 KHz) is performed for 5 minutes at a time interval of 45 seconds; carrying out centrifugation, and obtaining the supernate, namely the norovirus concentrate of the polluted water sample. The concentration efficiency is 7 to 8 times higher than that of non-aminated original silica gel and is also prominently higher than that of 3-aminopropyl triethoxysilane amino silica gel (60.65-65.91%) and N-aminoethyl-gamma-trimethoxysilane amino silica gel (72.65-85.76%).
Owner:ZHEJIANG CENT FOR DISEASE CONTROL & PREVENTION
Combined cable hoisting and laying auxiliary device
ActiveCN110112681AEliminate the risk of vandalismAvoid hazards such as collapseApparatus for laying cablesPulleyBuilding construction
The invention discloses a combined cable hoisting and laying auxiliary device, which comprises a horizontal fixing component, a side fixing component, a steel cable fixing cross arm and an anti-sway fixing bracket, wherein the horizontal fixing component and the side fixing component are assembled into a trapezoidal structural frame; the anti-sway fixing bracket is fixed to the upper part of the trapezoidal structural frame and is located at one side of the side fixing component for fixing and hoisting a fixed pulley; the steel cable fixing cross arm is fixed to the top of the trapezoidal structural frame and located above the anti-sway fixing bracket for hoisting a steel cable. The combined cable hoisting and laying auxiliary device does not need the help of a ceiling structure as a fixing point, and eliminates the damage influence on a building. The hoisting frame is stable and reliable in design, can avoid hidden dangers such as collapse and the like, is not restricted by the sites,is fixed by a lateral fixing part, and is suitable for all installation sites. Regardless of a narrow cable well or an equipment-intensive equipment room, the hoisting frame is detachable and reusable, thereby reducing construction and installation cost. The combined cable hoisting and laying auxiliary device can be widely used.
Owner:GUANGZHOU MECHANICAL & ELECTRICAL INSTALLATION
Preparation method of beta-casein monoclonal antibody, beta-casein colloidal gold test strip and preparation method thereof
InactiveCN103864929AEasy to operateHigh resolutionImmunoglobulins against animals/humansBiological testingBALB/cAntigen
The invention relates to the technical field of biology and provides a preparation method of a beta-casein monoclonal antibody, a beta-casein colloidal gold test strip and a preparation method thereof. The technical scheme is as follows: immunizing a BALB / c mouse by taking beta-casein as an antigen, taking mouse splenocytes with best immune effects to perform fusion with myeloma cells SP2 / 0, taking beta-casein, alpha s1-casein and K-casein as detection antigens, detecting supernatant of hybridoma cells by enzyme-linked immunosorbent assay, screening, retaining positive holes, further cloning by using a limiting dilution method to obtain a hybridoma cell strain which can stably secrete the anti-beta-casein monoclonal antibody, and then performing large-scale preparation and purification of the obtained monoclonal antibody. After the beta-casein monoclonal antibody obtained by the method is labeled by colloidal gold, the beta-casein monoclonal antibody can be adsorbed on a gold standard conjugate pad to prepare the colloidal gold test strip. The beta-casein colloidal gold test strip disclosed by the invention can realize fast specific detection and high resolution and shorten detection time when used for judging whether the casein content in raw milk achieves a standard or not.
Owner:长沙安迪生物科技有限公司
Rapid detection method of lafil PDE5 type inhibitor in drugs, health foods and foods
ActiveCN101598715AEasy to operateStrong specificityAnalysis using chemical indicatorsRural areaChemical composition
The invention discloses a rapid detection method of a lafil PDE5 type inhibitor in drugs, health foods and foods, comprising the following steps: taking solid or liquid drugs, health foods or foods, adding 1-20ml of extraction solvent, shaking the solvent for 1-2 minutes, standing for 1-10 minutes, and then taking supernatant; enabling 1-2 drops of the supernatant to react with 0.5-10ml of a colour developing agent, if the solution is purple in 2 minutes, initially judging that lafil chemical composition is contained. The method has the advantages of simple operation, strong specificity, high sensitivity, high accuracy and no requirement on special equipments, thereby avoiding using agents with relatively high toxicity or strong corrosion, being suitable for field operations, and being capable of meeting the supervision and inspection demands of primary level units, vast rural areas and small-medium cities with relatively backward detection technology conditions.
Owner:广东省药品检验所
Preparation method of antarctic krill oil
ActiveCN102559369BEasy to operateReduce dosageFatty-oils/fats productionAlkaline proteaseMaximum level
The invention discloses a preparation method of antarctic krill oil, which comprises the following steps: directly homogenizing harvested fresh live antarctic krill, and allowing low-temperature autolysis of the homogenate after ultraviolet irradiation; adding water, sodium chloride and ethanol to the low-temperature autolyzed homogenate, heating the homogenate after ultraviolet irradiation treatment to 30-65 DEG C in a gradient manner, and allowing high-temperature autolysis; performing ultrasonic treatment of the high-temperature autolyzed homogenate, adjusting pH, adding alkali protease for extraneous enzyme enzymolysis; and adding n-hexane to the enzymatic hydrolysate to extract krill oil. The method of the invention is especially suitable for operation immediately in a fishing boat after the fresh live antarctic krill are harvested. The method is simple in operation and has high efficiency. Especially, the use amount of the extraneous enzyme is reduced by using the strong autolysis capacity of the fresh live antarctic krill, so as to reduce production cost. The extraction method has mild conditions, so that some original physiologically active substances in the krill oil can be stored at a maximum level, and the product is both nutritional and functional.
Owner:DALIAN POLYTECHNIC UNIVERSITY
Jam releasing dissolving agent for downhole bridge plug/packer jamming rubber part
The invention discloses a jam releasing dissolving agent for a downhole bridge plug / packer jamming rubber part. The jam releasing dissolving agent is prepared by mixing the following components in percentage by volume of 25%-35% of ethyl acetate, 25%-35% of acetone and 35%-45% of n-propanol. The jam releasing dissolving agent disclosed by the invention is simple in preparation method, and suitable for field operation, finally, jamming of a bridge plug or a packer is removed, and a wellbore can be smoothly lifted.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Method for recycling scrap steel by utilizing LF refining furnace
InactiveCN112725561AReduce manufacturing costReduce production pressureProcess efficiency improvementMolten steelArgon gas
The invention relates to the technical field of iron and steel smelting, and particularly discloses a method for recycling scrap steel by utilizing an LF refining furnace. The method for recycling the scrap steel by utilizing the LF refining furnace comprises the following steps that a, the clearance of a steel ladle for converter tapping is controlled to be 600-800mm, entering an LF furnace treatment position is carried out, slagging and heating are carried out, the steel ladle is transferred to an LF furnace ladle hanging position, argon is introduced, and 50-80kg / ton of scrap steel is added; b, the steel ladle is transferred to an LF furnace heating position, first-time component fine adjustment is carried out on molten steel in the steel ladle, argon is introduced, and stirring is carried out till the steel scrap is completely molten; and c, the molten steel in the steel ladle is heated to 1510-1570 DEG C, secondary component fine adjustment is carried out, and the LF refining process is completed. According to the method, the absorptivity of the scrap steel and the absorptivity of beneficial elements are remarkably improved, the operation is easy, only one-time scrap steel input procedure is needed, completion can be achieved on original equipment, and application and popularization are easy.
Owner:HEBEI IRON AND STEEL
Method for calibrating Tau curve of hollow coil sensor
The invention discloses a method for calibrating the tau curve of a hollow coil sensor. The method comprises the steps of building a calibration system, wherein the calibration system comprises a hollow calibration coil and at least one hollow coil to be corrected; the hollow calibration coil is connected to the power supply, and the hollow coil to be corrected is connected to a receiver; sendinga pulse current signal to the hollow calibration coil; measuring the frequency band width of the hollow coil to be corrected through a calibration system; calibrating the transfer function H (s) of the hollow coil to be corrected through the calibration system. The method has the beneficial effects that the duration time of the transition process is marked by means of the non-steady-state intervalof the tau curve, and the quantitative measurement of the frequency band width of the coil can be realized, and the characteristic quantity of the result is easy to extract; according to the method,the calibration of the coil transfer function does not depend on the data of the calibration current, so that system parameters such as mutual inductance do not need to be acquired, and the error canbe reduced, and the device is suitable for on-site operation; the to-be-corrected hollow coil can be rapidly calibrated, and the accuracy is high.
Owner:CHONGQING UNIV +1
Rapid detection method and detection kit for detecting morphine and codeine in hot pot food
InactiveCN107515214AEfficient extractionEliminate distractionsMaterial analysis by observing effect on chemical indicatorSodium bicarbonateAlkaloid
The invention discloses a rapid detection method and a detection kit for detecting morphine and codeine in a hot pot food. According to the method, a sample extract and sodium bicarbonate are used to process a hot pot food, morphine and codeine in the hot pot food can be extracted effectively, and the extracted morphine and codeine can be directly detected by a morphine and codeine detection card. The detection limit of the detection method is 40 [mu]g / kg. The detection accuracy is 98% and the specificity is 97%. The interference of other alkaloids and other matrixes in the hot pot food can be eliminated. The operation is simple, the detection time is short, and the detection method does not need any special equipment, is suitable for onsite detection, and meets the onsite detection requirements of surveillance departments, detection departments, and various organizations.
Owner:广东省药品检验所
Welding device and method for superconducting lines
ActiveCN102941387BAchieve weldingApply pressure evenlyLine/current collector detailsHeating appliancesTemperature controlMaterials science
Owner:中国船舶重工集团公司第七一二研究所
A calibration method, device and computer equipment for a three-dimensional laser scanning system
ActiveCN113494893BImprove efficiencyEasy to operateImage analysisUsing optical meansLaser transmitterVertical plane
Owner:深圳广成创新技术有限公司
An oblique pin locking hose joint
Owner:上海合辙机电设备有限公司
Monorail vehicle underframe limit detection device and method
ActiveCN111038550BPrevent crashSuitable for on-site operationRailway auxillary equipmentRailway profile gaugesBogieMonorail
The invention discloses a limit detection device and a method for the underframe of a monorail vehicle. The bottom frame limit detection device includes a skeleton, a flexible side plate and a roller assembly. The flexible side plate is arranged on the outside of the skeleton, while the shape of the inner side of the skeleton matches the shape of one side of the track beam, and the inner side of the skeleton is equipped with the roller assembly; the skeleton passes through the roller assembly. Can be engaged on one side of the track beam and can be moved along the side of the track beam from the first end bogie of the monorail vehicle to the second end bogie of the monorail vehicle. It can be seen that the present invention is suitable for on-site operation, simple and practical. At the same time, the present invention is equipped with a roller assembly on the inside of the skeleton, so that the limit between the track beam and the monorail vehicle chassis can be continuously detected, and there is no need to disassemble and reinstall it everywhere. The setting of the flexible side plate can prevent the overrunning pipelines and joints from being damaged.
Owner:CRRC PUZHEN BOMBARDIER TRANSPORTATION SYST CO LTD
Nozzle, hard pipe joint structure, and device and method for nipple processing
ActiveCN104235536BImprove sealingHigh pressure levelSleeve/socket jointsOther manufacturing equipments/toolsEngineeringMechanical engineering
The invention discloses a hard tube connector structure for a hydraulic system, a connecting tube as well as a device and a method for machining the connecting tube. The connecting tube and the hard tube connector structure can be applied to a system with the pressure grade reaching up to 1100MPa and flow rate, and are reliable in sealing and very high in pressure grade; the sealing effect is not influenced after the connecting tube and the hard tube connector structure are repeatedly used for a plurality of times. The device and the method can be used for conveniently manufacturing the connecting tube, and are simple in operation, thus being suitable for field operation.
Owner:GUANGDONG HUAYE POWER TECH
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