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Method for bridge vibration testing and dynamic property recognition based on video monitoring
ActiveCN105865735AEasy to operateWill not adversely affectVibration testingVideo monitoringPattern recognition
A method for bridge vibration testing and dynamic property recognition based on video monitoring comprises a step A of performing system construction, initial configuration and displacement obtaining; a step B of performing multipoint structure dynamic displacement obtaining, continuous collection and storage; a step C of preprocessing displacement time-history data; and a step D of processing free vibration response signals to obtain a modal parameter.
Owner:ZHEJIANG UNIV
Degradable electric-insulation material
ActiveCN104356620ALow raw material costEasy to recyclePlastic/resin/waxes insulatorsCross-linked polyethyleneEther
The invention discloses a degradable electric-insulation material which is prepared by the following steps: adding the following raw materials in parts by weight into a centrifugal machine: 50-60 parts of L-polylactic acid, 30-40 parts of bacterial cellulose, 10-20 parts of crosslinked polyethylene, 20-30 parts of halogen-containing flame-retardant material, 5-10 parts of halogen-containing flame retardant, 5-20 parts of decabromodiphenylethane, 5-15 parts of hydroxyethyl cellulose, 20-30 parts of glass fiber, 10-20 parts of starch ether, 20-30 parts of polycarbonate, 10-15 parts of polyvinyl alcohol, 20-25 parts of ethylene-propylene rubber and 5-10 parts of silane coupling agent; uniformly mixing, sending into a double screw extruder to extrude into a molten state, controlling the temperature at 180-200 DEG C, quickly injecting the molten mass into a mold by using an injection machine, and trimming in the auxiliary mold by using a cutting machine. The electric material has the advantages of excellent mechanical properties, excellent cold / heat stability, excellent flame retardancy and high biodegradability, and is hopeful to be widely used as a novel insulation material.
Owner:PUYANG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER +1
Three-dimensional shock isolation device
ActiveCN104763066AWide frequency of vertical vibration isolationStrong adaptability to deformationShock proofingEngineeringShock absorber
Owner:SHANGHAI BAOYE GRP CORP +1
Annular frictional rotating shockproof supporting base
ActiveCN104763056AGuaranteed stabilityImprove shock absorptionBridge structural detailsShock proofingEngineeringRigid body
The invention relates to an annular frictional rotating shockproof supporting base. The annular frictional rotating shockproof supporting base comprises an upper cover plate, a rotating rigid body, an annular frictional wall, a buffer spring, a suspending steel block, and a base; the lower part of the upper cover plate is provided with a convex hemispheroid, the upper part of the rotating rigid body is provided with a groove, and the convex hemispheroid is meshed and contacted with the groove; the center of the lower part of the rotating rigid body is provided with a spherical groove, and the spherical groove is in supporting connection with the hemispheroid to form rotating contact in every direction; the overall side face of the rotating rigid body is provided with a spherical face and forms a frictional contact with the annular frictional wall; when the rotating rigid body is rotated, the rotating rigid body rubs the annular frictional wall to dissipate the earthquake energy; one ring at the bottom part of the rotating rigid body is provided with a vertical buffer spring, and the other end of the buffer spring is connected with the suspending steel block; the suspending steel block is placed in a block opening of the base, and the thickness of the suspending steel block is less than the height of the block opening; when the rotating rigid body is rotated to a certain position, the buffer spring can upwards raise up so as to drive the suspending steel block to upwards move; when the buffer spring is contacted with the block opening, the buffer spring is stretched to limit the movement of the rotating rigid body.
Owner:SHANGHAI BAOYE GRP CORP +1
Tourmaline negative ion generator
ActiveCN103557557AIncrease concentrationIncrease arousalDispersed particle filtrationLighting and heating apparatusHigh energyRadioactive agent
The invention relates to a tourmaline negative ion generator which aims at solving the poor quality problem of negative ions generated through the prior art. The tourmaline negative ion generator comprises an air channel which is assembled with a fan; a dust filtering device, a PM (Particulate Matter) 2.5 filtering device, a first negative ion generation unit, one or a plurality of second high-energy ultrasonic motivation units and a plurality of third high temperature electrical bar exploration cracks and tourmaline negative ion generation units are assembled to the channel from the upper stream to the lower stream; the number of the third high temperature electrical bar exploration cracks and tourmaline negative ion generation units is larger than that of the second high-energy ultrasonic motivation units; the second high-energy ultrasonic motivation units comprise air inlets, air outlets, air channels which are arranged between the air inlets and the air outlets and a high-energy ultrasonic humidifier; the high-energy ultrasonic humidifier transports small molecular group moisture to the air channels which are arranged between the air inlets and the air outlets. The tourmaline negative ion generator has the advantages of enabling generated hydration small negative ions to fly far and easy to absorb and generating no adverse influence to human bodies due to the fact that no radioactive substance is used to perform motivation in the complete motivation mechanism.
Owner:袁满雪 +2
Hot-rolled oil composition containing intercalation clay antiwear agent
The invention discloses a hot-rolled composition with organic silicon anti-friction antilubricant, which comprises the following parts: (I) lubricant basic oil with viscosity at 5-300mm2 / s at 40 deg.c, (II) 0.1-20wt% sulphur extreme pressure agent with one or more material from alkyl polysulfide, sulfur ore oil and sulfur polyol ester, (III) 0.05-15wt% phosphorus antiwear agent with one or more material from phosphate, phosphonate, phosphite ester, acid phosphate ester, phosphite ester amine salt, phosphamide ester, dialkyl dithiophosphate, dimercaptothiodiazole dithiophosphate ester and acid phosphate imidazoline salt, (IV) 0.1-25% organosilicon abrasion resistance antilubricant with organic modified clay, plastic and alkyl benzene, insaturated ester oil, animal and plant oil.
Owner:CHINA PETROLEUM & CHEM CORP +1
Detection unit for online negative pressure air suction conveying device of roll paper die-cutting machine belt
ActiveCN104528419AAccurate and smooth deliverySmooth and accurate deliveryCleaning using gasesArticle feedersRolling paperEngineering
The invention discloses a detection unit for an online negative pressure air suction conveying device of a roll paper die-cutting machine belt. The detection unit comprises the conveying device, negative pressure cavity boxes, a foldable negative pressure cavity box, a sliding device of the foldable negative pressure cavity box and a belt supporting frame. The negative pressure cavity boxes and the foldable negative pressure cavity box are arranged on the lower face of a conveyor belt and the foldable negative pressure cavity box can slide, stretch and retract in one negative pressure cavity box. A negative pressure cavity panel is arranged on the negative pressure cavity boxes and the foldable negative pressure cavity box. The negative pressure cavity boxes are fixed to a rack, the foldable negative pressure cavity box is fixed to the sliding device, and the sliding device is connected with a cylinder. The negative pressure cavity boxes and the foldable negative pressure cavity box are provided with connectors and connected with an exhaust fan. The belt supporting frame is a mesh type frame arranged on the negative pressure cavity panel. A dust removal device and a connection device can be additionally arranged on the detection unit. Products can be stably and accurately conveyed to a detection device through the negative pressure air suction conveying device.
Owner:CHANGDE JINPENG PRINTING
Method for preparing high-performance carbon-graphite material through solvent pretreatment of green coke powder
The invention discloses a method for preparing a high-performance carbon-graphite material through solvent pretreatment of green coke powder. The methodcomprises the following steps: removing low-molecular-weight organic matters in green coke powder with an organic solvent to obtain pretreated green coke powder, then carrying out compression molding on the pretreated green coke powder to form a green body, and finally sintering the green body to obtain the carbon-graphite material. According to the invention, the method does not need to use a binder, and is short in production period, low in energy consumption and environment-friendly, and the prepared carbon-graphite material is uniform in structural form, stable in bonding component, consistent in thermal shrinkage and high in density.
Owner:HUNAN UNIV
Water supply system and container and boost pump thereof and water supply method
A water supply system is obtained by improving box-type non-negative pressure water supply equipment and composed of a first water inlet pipe, a gas inlet valve, a container, a first water pump and a water pipe.A gas pressure water tank or a normal pressure water tank is adopted as the container; the first water pump comprises a second water pump.The water supply system has the advantage of being continuous in flow and pressure and solves the problem of water using cycle of stored water of a water tank in the box-type non-negative pressure water supply equipment.
Owner:石连科
Construction protection supporting device for inspection well of medium repair asphalt pavement and using method thereof
PendingCN108678027AReduced support space requirementsEasy to operateArtificial islandsUnderwater structuresSupporting systemArchitectural engineering
The invention discloses a construction protection supporting device for an inspection well of a medium repair asphalt pavement and a using method thereof, and belongs to the field of municipal engineering construction. The construction protection supporting device for the inspection well is a triangular frame supporting system and comprises retractable main supporting steel pipes, an abdominal supporting triangular frame and a top face horizontally-arranged triangular frame; the triangle vertex of one side of the abdominal triangular frame is connected with the main supporting steel pipes through rotatable bolts, the other side of the abdominal triangular frame is provided with a hollow pipe, a steel bar rod penetrating into one side of the horizontally-arranged triangular frame is connected with the hollow pipe, a steel bar hook welded to the triangle vertex of the other side of the horizontally-arranged triangular frame is inserted into the corresponding main supporting steel pipe tobe connected with the main supporting steel pipe, so that the triangular supporting system is formed and the triangular supporting system is used for supporting a temporary cover plate of the inspection well during milling cutting operation of the old pavement. The triangular frame supporting deice is convenient to machine, easy to operate, foldable and convenient to carry, when used for supporting the cover plate of the inspection well, the triangular frame supporting deice is stable and firm, and the influence of construction debris on facilities in the well can be avoided.
Owner:郑州市市政设施维修建设有限公司
Alkaline dry battery and preparation method thereof
ActiveCN104201360ASimple manufacturing processImprove discharge performancePrimary cell electrodesDry cellsElectrolysisGraphite
The invention relates to an alkaline dry battery and a preparation method thereof, belonging to the technical field of batteries. The alkaline dry battery comprises a positive electrode ring and negative electrode zinc cream which are separated by a diaphragm, wherein the positive electrode ring comprises the following components in parts by weight: 100 parts of electrolytic manganese dioxide powder, 7.5-8.5 parts of graphite powder, 0.4-0.6 part of zinc stearate and 0.4-0.5 part of a positive electrode electrolyte solution; the zinc cream comprises the following components in parts by weight: 100 parts of zinc alloy powder, 50-65 parts of a negative electrode electrolyte solution and 2-4 parts of pure water. According to the alkaline dry battery, the proportion of electrolytic manganese dioxide to graphite in the positive electrode ring is reasonably configured, and the dosage of the positive electrode electrolyte solution in the positive electrode ring is substantially reduced, so that the alkaline dry battery is good enough in discharge performance, and meanwhile, the electrolyte solution cannot leak from the alkaline dry battery in a long-term placement process, thereby avoiding adverse influences to human and products.
Owner:NINGBO BEITERUI ENERGY TECH
Method for extracting tellurium from copper-tellurium slag
InactiveCN108862212AWill not adversely affectEfficient extractionElemental selenium/telluriumVulcanizationSlag
The invention belongs to the technical field of vacuum metallurgy, and discloses a method for extracting tellurium from copper-tellurium slag. The method is characterized in that the copper-telluriumslag is subjected to reduction by adding a reducing agent, and the tellurium is extracted through the vulcanization and vacuum distillation processes. The method comprises the following steps that firstly, the copper-tellurium slag and the reducing agent are subjected to reduction reaction in a vessel so as to obtain reduced copper-tellurium slag; then the reduced product and a vulcanizing agent are mixed according to a certain ratio, and heating is carried out for vulcanization reaction so as to obtain a vulcanized product with the tellurium and a copper sulfide substance mixed; and the obtained vulcanized product is put in a vacuum furnace for vacuum distillation so as to obtain the elemental tellurium and copper sulfide slag. The method has the advantages that the copper-tellurium slagis subjected to the three processes of reducing, vulcanizing and distilling, so that efficient extraction of the tellurium in the copper tellurium slag is realized; and the method is suitable for thecopper-tellurium slag with complex components, acid-base solutions are not used in the process, so that no waste water is generated, pollution to the environment is avoided, through the experimental verification, the purity of the tellurium obtained by using the method is 98-99.9%, and the direct yield reaches 96% or above.
Owner:KUNMING DIBOO TECH
Method for manufacturing river channel dry land construction conditions by using flow self-adjusting siphoning type construction flow guide pipe
ActiveCN110378024AEasy to operateReduce stepsGeometric CADClimate change adaptationEngineeringStreamflow
The invention provides a method for manufacturing river channel dry land construction conditions by using a flow self-adjusting siphoning type construction flow guide pipe, which comprises the following steps of: marking a river channel area of the river channel dry land construction conditions to be manufactured as a construction drying area which is positioned at the downstream of a water retaining building of a river channel; determining a water return area at the downstream of the construction drying area, wherein the water return area is adjacent to the construction drying area; installing a siphoning type construction flow guide pipe used for conveying water on the upstream of the water retaining building to the downstream of the water return area at the water retaining building; andcreating a vacuum condition for the siphoning type construction flow guide pipe so that water in front of the water retaining building can be conveyed to the downstream of the water return area through the siphoning type construction flow guide pipe, and when water in the target area flows out of the target area, forming a riverway dry land construction condition in the construction drying area.The method can significantly reduce the engineering investment, simplify the manufacturing operation of river dry land construction conditions, avoid the hidden danger of flood discharge, and also has the characteristic of being more environmentally friendly.
Owner:SICHUAN UNIV
Substrate placing stage
ActiveCN1790660AWill not adversely affectSemiconductor/solid-state device manufacturingPhotosensitive material processingEngineeringMechanical engineering
PROBLEM TO BE SOLVED: To provide a substrate placing stage wherein pins overlap on a cut scheduled line when supporting a large sized substrate where a plurality of substrates are subjected to multiple patterning. SOLUTION: A plurality of fixed pins 3 are mounted on a support plate. The fixed pins 3 are disposed at positions, as viewed in a flat plane, which overlap on an outer peripheral edge L1 located outside the effective area of the large-sized substrate placed on the substrate placing stage, and are also disposed at positions which overlap on a cut scheduled line L2 where the large-sized substrate is subjected to two-face patterning. In contrast, a movable pin 5 is inserted into a through hole formed in the support plate, and the movable pins 5 are disposed at positions which overlap on cut scheduled lines L3, L4 where the large-sized substrate is further subjected to patterning. The lateral movable pins 5 are mounted in common on a coupled plate located below the support plate, hereby elevates the lateral movable pins 5 simultaneously by driving a cylinder unit. COPYRIGHT: (C)2006,JPO&NCIPI
Owner:艾美柯技术株式会社 +1
Mining air purifying device
The invention relates to mining equipment, and discloses a mining air purifying device. The mining air purifying device comprises a water curtain dust falling device, a sewage pump, a settling pond, a clean water pond and a clean water pump, wherein the water curtain dust falling device comprises a shell, water diversion lines and a draft fan; a transverse water pipe is arranged above the front end of the shell; a sewage tank is arranged under the front end of the shell; the water diversion lines are vertically arranged and distributed at the front end of the shell; the upper ends of the water diversion lines are communicated with the inner part of the transverse water pipe; the lower ends of the water diversion lines are connected with the sewage tank; the draft fan is arranged in the shell; the rear end of the shell is connected with an exhaust pipe; the sewage tank is connected with the settling pond through the sewage pump; the settling pond is connected with the clean water pond; the clean water pond is communicated with the transverse water pipe through the clean water pump. The mining air purifying device disclosed by the invention is different from an uncontrollable state of mist spraying, a dust falling curtain is formed by the water diversion lines with water currents, and air is induced through the draft fan, so that dust and harmful gas in air are absorbed, and adverse effects cannot be generated.
Owner:PANZHIHUA COAL IND GRP CO LTD
Skin cream and producing method
A skin-protecting cream is prepared from white gourd, peach kernel, green gourd and honey through respectively grinding white gourd and peach kernel with water, filtering, heating while stirring, squeezing green gourd to obtain juice, dissolving honey in water, proportionally mixing them together, homogenizing while emulsifying and vacuum stirring while concentrating at 5-15 deg.C.
Owner:王惠兰
Bridge vibration mode measuring method, device and system
ActiveCN113340405AHigh measurement accuracyVibration descriptionSubsonic/sonic/ultrasonic wave measurementSustainable transportationEngineeringVideo image
The invention relates to a bridge vibration mode measuring method, device and system. The system comprises a video acquisition device, a laser radar and an image data processing device; the laser radar is used for emitting single-line laser to a virtual measuring point of a bridge, the video acquisition device is used for acquiring video images of a target area before and after the single-line laser is emitted, and the image data processing device is used for measuring and calculating the vibration mode of the bridge according to the collected video image. According to the embodiment of the invention, the video and the single-line laser are combined, the virtual measuring point in the target area image is obtained, the single-line laser is emitted to the virtual measuring point to obtain the displacement vector of the virtual measuring point, the static balance curve of the bridge is further obtained, and the original vibration mode of the bridge is obtained through the change of the spatial position of the virtual measuring point; and the vibration response of the virtual measuring point is obtained in combination with the mobile phone shooting frame rate, so the vibration of the bridge is quantitatively described.
Owner:CHINA RAILWAY SEVENTH GRP CO LTD +1
Compound emulsifier for preparing emulsified paraffin as well as preparation method and application of compound emulsifier
The invention discloses a compound emulsifier for preparing emulsified paraffin as well as a preparation method and application of the compound emulsifier. The compound emulsifier comprises the following components in parts by weight: 90-100 parts of span-80; 40-50 parts of tween-80; 10-20 parts of peregal; 30-40 parts of OP-10; 10-20 parts of triethanolamine; 5-10 parts of stearic acid; and 37-48parts of ethylene glycol. The compound emulsifier has the advantages that the emulsifier consumption is low and the emulsifying effect is excellent. Emulsified paraffin prepared from the prepared emulsifying agent has the characteristics of good emulsion dispersity, high stability, long shelf life, high water solubility, good film-forming property and the like, and the prepared emulsified paraffin serving as an additive is doped into concrete, has good compatibility with the concrete and has a certain water reducing effect; meanwhile, the hydrophobicity of the concrete can be enhanced, and the durability such as impermeability and electric flux can be improved; and in addition, the conductivity of the concrete can be weakened, the resistivity of the concrete is greatly improved, and the emulsified paraffin can be used for preparing high-impedance concrete.
Owner:CENT SOUTH UNIV
Platelet enrichment fluid
InactiveCN107617236AProportionally largeMaintain metabolismOther chemical processesPreparing sample for investigationHydroxyethyl starchBlood Collection Tube
The invention discloses platelet enrichment fluid. The platelet enrichment fluid is prepared from the following raw materials in parts by weight: 2 to 2.5 % of sodium citrate, 0.6 to 1 part of citricacid, 2.1 to 2.5 % of glucose, 2.5 to 3.5 % of hydroxyethyl starch 200 / 0.5, 2.5 to 3.5 % of dextran 70 and 87 to 90.3 % of distilled water. The platelet enrichment fluid can change the specific gravity of centrifuged plasma to 1.04 to 1.05 and the osmotic pressure of the enrichment fluid is isotonic to hemocyte. Therefore, after one-time centrifuging, because the specific gravity of the platelet in a blood-collection tube is smaller than that of the plasma, the platelet is enriched on the upper layer of the plasma, and the loss of the platelet caused by metastasis is prevented; in addition, according to the method, operation procedures are greatly simplified, thereby reducing pollution.
Owner:安徽信灵检验医学科技股份有限公司
Manufacturing method for metal interconnecting structure
ActiveCN104576516AIncreasing the thicknessAbility to increase strong powerSemiconductor/solid-state device manufacturingMetal interconnectMetallurgy
The invention discloses a manufacturing method for a metal interconnecting structure. The manufacturing method comprises the following steps: providing a substrate, and growing or depositing a medium layer on the substrate; performing photoetching to form a contact hole window; depositing a first layer of metal film; performing photoetching to form a first layer of metal interconnecting window; depositing a second layer of metal film; performing photoetching to form a second layer of metal interconnecting window, and completely packaging and superposing the first layer of metal interconnecting window with the second layer of metal interconnecting window to form the metal interconnecting structure. According to the manufacturing method, the thickness of the metal interconnecting structure can be increased, large current resistance and high power resistance of a circuit can be improved, a metal photoetching process can be easily carried out, required photoresist thickness can be reduced, and adverse influence of load effect due to relatively thick metal can be reduced.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP
A ring-shaped friction-rotation shock-isolation bearing
ActiveCN104763056BGuaranteed stabilityImprove shock absorptionBridge structural detailsShock proofingEngineeringRigid body
The invention relates to an annular frictional rotating shockproof supporting base. The annular frictional rotating shockproof supporting base comprises an upper cover plate, a rotating rigid body, an annular frictional wall, a buffer spring, a suspending steel block, and a base; the lower part of the upper cover plate is provided with a convex hemispheroid, the upper part of the rotating rigid body is provided with a groove, and the convex hemispheroid is meshed and contacted with the groove; the center of the lower part of the rotating rigid body is provided with a spherical groove, and the spherical groove is in supporting connection with the hemispheroid to form rotating contact in every direction; the overall side face of the rotating rigid body is provided with a spherical face and forms a frictional contact with the annular frictional wall; when the rotating rigid body is rotated, the rotating rigid body rubs the annular frictional wall to dissipate the earthquake energy; one ring at the bottom part of the rotating rigid body is provided with a vertical buffer spring, and the other end of the buffer spring is connected with the suspending steel block; the suspending steel block is placed in a block opening of the base, and the thickness of the suspending steel block is less than the height of the block opening; when the rotating rigid body is rotated to a certain position, the buffer spring can upwards raise up so as to drive the suspending steel block to upwards move; when the buffer spring is contacted with the block opening, the buffer spring is stretched to limit the movement of the rotating rigid body.
Owner:SHANGHAI BAOYE GRP CORP +1
Automatic unstacker
PendingCN111547322AImprove the efficiency of destackingImprove efficiencyUnpacking by cuttingElectric machineryProcess engineering
The invention relates to the technical field of traditional Chinese medicine machines, in particular to an automatic unstacker. The automatic unstacker comprises an outer shell, a transporting mechanism, an unpacking mechanism and a discharging mechanism. The transporting mechanism comprises an annular guide rail, a motor and multiple clamping devices. The motor drives the clamping devices to movealong the annular guide rail. The discharging mechanism comprises a discharging conveying belt, and the unpacking mechanism is located above the discharging conveying belt. The automatic unstacker has the beneficial effects that woven bags can be rapidly split and poured, manpower is saved, and the efficiency is improved.
Owner:甘肃康华制药机械设备有限公司
A kind of emulsified paraffin and its preparation method and application
ActiveCN109824914BTaking into account stabilityTaking into account the dispersionParaffin waxStearic acid
The invention discloses an emulsified paraffin wax and its preparation method and application. It consists of paraffin wax, water for emulsification and a composite emulsifier; in the emulsified paraffin wax, the mass fraction of the composite emulsifier is 3-5%; the composite emulsifier, In terms of parts by weight, it includes the following components: Span-80: 90-100 parts; Tween-80: 40-50 parts; Pinpinga: 10-20 parts; OP-10: 30-40 parts; Ethanolamine: 10-20 parts; Stearic acid: 5-10 parts; Ethylene glycol, 37-48 parts. The emulsified paraffin wax provided by the invention has the characteristics of good emulsion dispersion, high stability, long shelf life, strong water solubility, and good film-forming performance. It is mixed into concrete as an additive, has good compatibility with concrete, and has a certain At the same time, it can also enhance the hydrophobicity of concrete, improve the durability properties such as impermeability and electric flux; in addition, it can also weaken the electrical conductivity of concrete and greatly increase its resistivity, which is used to prepare high-impedance concrete.
Owner:CENT SOUTH UNIV
Seawater COD detection method
ActiveCN109060763AReduce the effect of absorptionReduce the impactRaman scatteringFluorescenceVisible near infrared
The invention provides a seawater COD detection method, and belongs to the field of seawater detection. According to the seawater COD detection method, complicated pretreatment and chemical analysis does not need to be carried out on a practical seawater sample, operation steps are greatly simplified, and detection time is shortened. Different absorption characteristics of different substances byRaman spectrum minimize the influence of visible-near-infrared band light absorption by properties of water, the interference of fluorescence to the detection result is reduced by using the Raman spectrum, so that the detection result is more accurate; and compared with the traditional detection, the seawater COD detection method is environment friendly and cannot consume a large number of chemical reagents, and thus cannot cause an adverse effect to the environment.
Owner:YANSHAN UNIV
Keyless Microsoft program control hardware system
InactiveCN101533305BIncrease the areaWill not adversely affectInput/output for user-computer interactionCharacter and pattern recognitionThe InternetCrowds
Owner:北京捷尔达国际科技文化有限责任公司
A field test method for testing the neutral point of negative friction resistance of phc pipe piles in soft soil areas
ActiveCN113529815BImprove accuracyClear principleFoundation testingBulkheads/pilesSoil scienceField tests
The invention discloses a field test method for testing the neutral point of negative friction resistance of PHC pipe piles in soft soil areas. The steps are as follows: 1) stratum layering: using a drilling rig to drill holes in the manner of spiral drilling to obtain the stratum of the soil around the pile Layer information; 2) Embedding of layered settlement equipment: lay the inclined pipe flat on the ground, and insert it into the settlement ring sequentially from the bottom. The stratum information obtained from the number and position of the settlement ring is determined, and the settlement plate is fixed on the pile head ;4) Surcharge: carry out surcharge to the area surrounded by the pile head and the inclined pipe, the surcharge soil is cohesive soil, and roll it with a roller compactor while surfacing until the surcharge reaches a height; 5) Settlement data collection : Connect the layered settlement probe and the layered settlement data acquisition instrument respectively with the two ends of the measuring line, vertically lower the layered settlement probe into the inclined pipe, and repeatedly test the layered settlement data; 6) calculation and analysis. The method is easy to operate and easy to operate, and can effectively solve the problem of distortion of the neutral point of negative friction resistance of PHC pipe piles obtained by laboratory tests at present.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
Method for preparing arctiin
InactiveCN101863937BDoes not affect recoveryReduce energy consumptionSugar derivativesSugar derivatives preparationChromatographic separationOrganic solvent
Owner:ZHEJIANG UNIV
Ecological cement clinker produced by utilizing sludge
The invention relates to an ecological cement clinker produced by utilizing sludge, and belongs to the technical field of building materials. The ecological cement clinker is prepared from the following components in parts by weight: 35-80 parts of raw materials, 38-85 parts of limestone, 9-15 parts of iron ore, 3-8 parts of fly ash, 4-10 parts of sandy shale and 26-46 parts of sludge, and is prepared by the following steps: stoving the raw materials at 105 DEG C, finely grinding the raw materials with a ball mill till the raw materials can pass through a 200-mesh sieve, then stoving in an oven at 105 DEG C for 24 h, calcining into cement clinker, conducting heat preservation at 1450 DEG C for 50 min, taking out, and conducting cooling crushing so as to obtain the ecological cement clinker. The production cost of the cement can be reduced, thorough and harmless treatment of the sludge can be realized, and important functions are played for resource optimal configuration, environmental protection and social sustainable development.
Owner:赖清甜
The method of using siphon construction diversion pipe to make the construction conditions of river dry land
ActiveCN110378024BEasy to operateReduce stepsGeometric CADClimate change adaptationSiphonRiver routing
The invention provides a method for using a siphon-type construction diversion pipe to manufacture dry river construction conditions, the steps are as follows: record the river area where the construction conditions for river dry land are to be manufactured as the construction dry area, and the construction dry area is located at the water retaining area of the river Downstream of the building; determine the backwater area downstream of the construction dry area, and the back water area is adjacent to the construction dry area; install a siphon construction at the water-retaining building to transport the water upstream of the water-retaining building to the downstream of the backwater area Diversion pipe: Create a vacuum condition for the siphon construction diversion pipe to transport the water in front of the water-retaining building to the downstream of the backwater area through the siphon construction diversion pipe. When the water in the target area flows out of the target area, the construction The dry area forms the construction conditions of river dry land. The method can significantly reduce the project investment, simplify the manufacturing operation of the construction conditions of the river dry land, avoid the hidden danger of flooding, and has the characteristics of being more environmentally friendly.
Owner:SICHUAN UNIV
A kind of compound emulsifier for preparing emulsified paraffin and its preparation method and application
The invention discloses a composite emulsifier for preparing emulsified paraffin wax and its preparation method and application, comprising the following components in parts by weight: Span-80: 90-100 parts; Tween-80: 40-50 parts Pingpingjia: 10‑20 parts; OP‑10: 30‑40 parts; Triethanolamine: 10‑20 parts; Stearic acid: 5‑10 parts; Ethylene glycol, 37‑48 parts. The invention has the advantages of less emulsifier consumption and excellent emulsification effect. The emulsified paraffin prepared by the emulsifier prepared by the invention has the characteristics of good emulsion dispersibility, high stability, long shelf life, strong water solubility and good film-forming performance. The prepared emulsified paraffin is used as an additive to mix into concrete, which has good compatibility with concrete and has a certain water-reducing effect; at the same time, it can also enhance the water repellency of concrete, improve the durability of impermeability and electric flux, etc. The performance is improved; in addition, it can also weaken the conductivity of concrete and greatly increase its resistivity, which is used to prepare high-impedance concrete.
Owner:CENT SOUTH UNIV
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