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A drilling retrievable microseismic sensor installation method
ActiveCN118295008Bimprove protectiongood injectabilitySurveyAcoustic presence detectionMining engineeringMechanical engineering
The present invention discloses a drilling recyclable microseismic sensor installation method, comprising the following steps: S1: making a sensor installation base and a hole protection steel pipe; S2: drilling a hole in the rock mass of the monitoring area; S3: assembling the microseismic sensor, the installation base, and the hole protection steel pipe and placing them in the borehole; S4: sealing the borehole and grouting; S5: connecting a collector and performing microseismic monitoring; S6: recovering the microseismic sensor. The present invention aims at the problems of high ground stress, soft and broken rock mass, and large mining impact in underground engineering, realizes the protection, recovery and recycling of microseismic sensors, and improves the coupling effect of drilling installation of microseismic sensors and the quality of signal acquisition.
Owner:CHINA UNIV OF MINING & TECH
An ordered mesoporous carbon-confined nickel phosphide catalyst and its preparation method and application in catalyzing cellulose to produce sorbitol
ActiveCN119186607BImprove reduction efficiencyprevent sinteringPhysical/chemical process catalystsPreparation by hydrolysisCelluloseNickel catalyst
The present invention belongs to the technical field of catalyst preparation, and provides an ordered mesoporous carbon-confined nickel phosphide catalyst, a preparation method thereof, and an application of catalytic cellulose to sorbitol. The phytic acid used in the present invention has a strong chelating effect, and each phytic acid molecule can complex six nickel ions, so the ratio of nickel to phosphorus in phytic nickel is relatively fixed. Due to the close complexation of nickel and phosphorus, a high phosphorus utilization rate can be achieved by controlling the volume space velocity of flowing air and flowing hydrogen, so that the generated hydrogenation active center is pure phase Ni2P. In addition, the catalyst precursor is first heat-treated in an atmosphere of flowing air, the purpose is to introduce oxygen, reduce the content of carbon species, and avoid excessive carbon species from burying the metal active center; then switch to an atmosphere of flowing hydrogen, continue to heat up for reduction treatment, the purpose is to reduce the phytic nickel to generate Ni2P active center, and then increase the content of pure phase Ni2P.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
Foundation pit excavation positioning mechanism
ActiveCN222295017Uresolve offsetprevent collapseExcavationsArchitectural engineeringStructural engineering
Owner:FU JIAN ER JIAN JIAN SHE JI TUAN GONG SI
Immersed Self-Floating River Flow Detection Device
ActiveCN119354287Bimprove accuracyExtended service lifeVolume/mass flow measurementWater resource assessment
The present invention provides an immersion-type self-floating river flow detection device, and adjacent lifting sub-tubes are slidably and sealedly connected; an air supply mechanism is sealedly connected to the innermost lifting sub-tube, and the air supply mechanism is used to supply air to the lifting tube, so that the inner lifting sub-tube of the adjacent lifting sub-tubes extends outward from the outer lifting sub-tube, and the Doppler flowmeter is connected to the innermost lifting sub-tube; a locking mechanism is arranged between the air supply mechanism and the lifting tube, and when the locking mechanism is opened, the air supply mechanism supplies air into the lifting tube, a detection mechanism is arranged below the Doppler flowmeter, and the detection mechanism is connected to the innermost lifting tube, and the detection mechanism is connected to the locking mechanism. The present invention cooperates by arranging the lifting tube, the air supply mechanism, the detection mechanism and the locking mechanism, and when the air supply mechanism inflates the inside of the multi-layer air supply tube, the multi-layer air supply tube extends to drive the Doppler flowmeter to rise, thereby preventing the Doppler flowmeter from being buried by mud and sand, improving the accuracy of flow detection, and improving the service life.
Owner:SHIJIAZHUANG TIEDAO UNIV +2
Anti-scouring device for wind power generation cable
InactiveCN119560967Aavoid damagereduce threatCable installations on groundCable installation apparatusWater flowEnvironmental engineering
The invention discloses a wind power generation cable anti-scour device, and relates to the technical field of wind power generation, the wind power generation cable anti-scour device comprises a cable body and a sediment layer, a protection mechanism is installed on the outer wall of the cable body, the protection mechanism and the cable body are jointly buried in the sediment layer, and a top plate is arranged at the top of the protection mechanism. The top plate covers the surface of the sediment layer, and a sediment discharging mechanism is arranged at the top of the top plate. By arranging the protection mechanism, the outer wall of the cable body is quickly wrapped and clamped, the cable mounting and embedding efficiency is improved, the protection mechanism and the cable body are embedded into a sediment layer after being clamped, damage of pressure in sediment to the cable body is reduced through a clamping plate, the top of the cable body is protected through a top plate, and the cable mounting and embedding efficiency is improved. By means of the arc-shaped structure at the top of the cover plate, downward pressure is generated when water flows on the surface of the cover plate, the position of the cable body is stabilized, and the corrugated plate pushes the water to flow towards the upper surface of the cover plate to clean the upper surface of the cover plate.
Owner:FENGBANGBANG INTELLIGENT TECH (TIANJIN) CO LTD
A method for preparing a superhydrophobic drag-reducing coating and its application in a manta ray-inspired submersible prototype.
PendingCN122080770Astable water contact angleGuaranteed stabilityWatercraft hull designSpecial surfacesMicron scaleWater flow
This invention discloses a method for preparing a superhydrophobic drag-reducing coating and its application in a manta ray-inspired submersible prototype, belonging to the technical field of underwater drag reduction and surface functional materials. The method includes: dispersing micron-sized SiO2 and nano-sized SiO2 in ethyl acetate to obtain a first dispersion; dispersing PDMS in ethyl acetate to obtain a second dispersion; mixing and stirring the first and second dispersions, then adding a curing agent and long-chain perfluoroalkyl silane PFDTES, followed by spraying and curing to obtain a PFDTES-PDMS@SiO2 coating. This invention achieves a water contact angle >150° and a roll-off angle <9° through the synergistic effect of PFDTES long-chain fluorination modification, PDMS flexible bonding, and the micro / nano dual-scale SiO2 hierarchical structure. In the manta ray-inspired submersible application, a drag reduction rate of 14.43% is achieved at a flow rate of 0.5 m / s, and the performance remains stable after 24 hours of dynamic water flow impact. This invention features a simple process, controllable cost, and is suitable for drag reduction functionalization of complex curved underwater equipment.
Owner:NINGBO INST OF NORTHWESTERN POLYTECHNICAL UNIV
Surveying, measuring and marking device
ActiveCN222353198UImprove work efficiencyavoid burialMeasuring points markingMarking outStructural engineering
The utility model provides a surveying, measuring and marking device. The surveying, measuring and marking device comprises a digging assembly, a marking assembly and a supporting assembly. The marking assembly comprises a marking cylinder, an annular pressing plate and a storage box. A feeding opening is formed in the outer side wall of the storage box, the bottom of the marking cylinder communicates with the top of the annular pressing plate, the bottom of the annular pressing plate communicates with a shell, the outer side wall of the marking cylinder communicates with a pipe body, the other end of the pipe body communicates with a hopper, and the outer side wall of the hopper is fixedly connected with a second baffle. Through the arrangement of a handle, a second plate body, a third rod body and a marking barrel, the annular pressing plate body can be pressed downwards, soil drilled by a drill bit can be compacted in cooperation with the use of a shell, and marking powder in a storage box automatically flows into a drill hole while the handle is pressed downwards in cooperation with the use of structures such as a hopper and a pipe body; when marks are additionally arranged, drill holes and marking powder are prevented from being buried by dug soil.
Owner:TANGSHAN MINAN SAFETY PROD TESTING CO LTD
Distribution plate, fluidized bed reactor and overhaul and maintenance method
PendingCN119656996Aimprove securitySimple structureChemical/physical processesFluidized bedMechanical engineering
The invention discloses a distribution disc, a fluidized bed reactor and a maintenance method, the distribution disc comprises a main disc body with a plurality of distribution holes and a plugging mechanism detachably connected with the main disc body, the main disc body is provided with a passing channel used for assisting maintenance and repair, the passing channel penetrates through the main disc body, and the plugging mechanism is detachably connected with the main disc body. And the plugging mechanism is detachably embedded in the passing channel. The plugging mechanism comprises at least one viewing pipe with a hollow middle part, and the viewing pipe is used for assisting an endoscope in observing the deposition accumulation condition above the main disc body. According to the distribution disc provided by the technical scheme, an endoscope can penetrate through the visit pipe to observe accumulation of internal sediments in advance, the plugging mechanism is opened after safety conditions are met, an operator can enter from the passing channel for overhaul and maintenance, the operator does not need to enter from the upper end of a fluidized bed reactor any more, and the operation is convenient. And the safety of operators is greatly improved.
Owner:CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +1
Current nursery stock in-situ high fill protection structure
ActiveCN222382282Uavoid burialGuaranteed breathabilityRoot feedersPlant protectionTree trunkSeedling
The utility model relates to a current nursery stock in-situ high filling protection structure, which is characterized in that a trunk of a current nursery stock is sleeved with an isolation wall, the isolation wall is filled with modeling earthwork, the modeling earthwork covers an original soil layer where a nursery stock root system is located, a vertical cavity is formed in the isolation wall, and the cavity extends upwards to be flush with the modeling earthwork. The trunk penetrates out of the cavity; the cavity is filled with a breathable water-retaining layer, the portion, close to the upper end of the cavity, of the breathable water-retaining layer is filled with the breathable water-retaining layer along the bottom of the cavity, a protective layer used for preventing the breathable water-retaining layer from being separated from the cavity is arranged above the breathable water-retaining layer in the cavity, and the protective layer is a water-permeable and breathable protective layer. According to the protection structure, the modeling earthwork is isolated from the trunk through the isolation wall, the trunk is prevented from being buried by the modeling earthwork, the air permeability around the trunk is guaranteed, and compared with transplanting and temporary planting, in-situ growth of seedlings in the current situation can be achieved, and normal growth and the landscape effect of the seedlings are guaranteed to the maximum extent.
Owner:SHANGHAI GARDENS (GROUP) CO
Method for implanting biological material for repairing natural grassland
InactiveCN119214035Aavoid burialImprove fertilityHops/wine cultivationGrowth substratesSoil scienceGrassland
The invention provides a biological material implantation method for natural grassland remediation, and relates to the technical field of grassland remediation, and the biological material implantation method comprises the following steps: S1, grass grid material pretreatment: S11, material cleaning: putting on gloves, flapping a wheat straw or straw downwind, flapping dead leaves on the surface of the wheat straw or straw down, and removing the dead leaves on the surface of the wheat straw or straw; high-quality wheat straw stalks or rice straw stalks are left, and the cleaned wheat straw stalks or rice straw stalks are piled up. According to the scheme, in the initial growth stage of the shrubs, the straw mat barrier is adopted for resisting external strong wind for the shrubs, the shrubs can be prevented from being buried by sandy soil, a good environment is provided for growth of the shrubs, nutrients are provided for growth of the shrubs and grass through the natural organic auxiliary matrix, and when the shrubs grow to the later stage, the growth of the shrubs is accelerated. The straw mat barrier is gradually rotted under the erosion of rainwater, and the rotted straw mat can be converted into organic matters, so that the fertility of the soil is improved, the air permeability and the water-retaining property of the soil are improved, and finally, the survival rate of planted shrubs and the restoration effect on grassland are improved.
Owner:INNER MONGOLIA AUTONOMOUS REGION ACAD OF AGRI & ANIMAL HUSBANDRY SCI
Anti-scouring repairing device for offshore wind power foundation and operation method of anti-scouring repairing device
ActiveCN119593440Apromote repairEnhanced flushingProtective foundationWind motor supports/mountsStructural engineeringOffshore wind power
The invention belongs to the technical field of offshore wind power, and discloses an offshore wind power foundation anti-scour repairing device and an operation method.The repairing device comprises a repairing frame, connecting pieces and a repairing assembly, the repairing frame is fixed to a seabed and spaced from a wind power foundation pile, and the multiple connecting pieces are annularly and evenly distributed and connected to the peripheral side of the wind power foundation pile; the end, away from the wind power foundation pile, of the connecting piece is connected with the repairing frame, a plurality of repairing assemblies are arranged on the connecting piece at intervals, each repairing assembly comprises a driving piece and bionic grass, and the driving pieces are arranged on the connecting piece and connected with the bionic grass. According to the anti-scour repairing device for the offshore wind power foundation, the bionic grass is driven by the driving part to move in the vertical direction, so that the distance between the bionic grass and the seabed is guaranteed, the bionic grass can still be exposed out of the seabed after the scour pit is filled with silt and repaired, the bionic grass is prevented from being buried by the silt, and the service life of the bionic grass is prolonged. And the restoration capability of the bionic grass on the scour pit and the subsequent anti-scour effect are effectively ensured.
Owner:GUANGDONG ENERGY GROUP SCIENCE & TECHNOLOGY RESEARCH INSTITUTE CO LTD
Anti-settling artificial fish reef
ActiveCN222639434Uavoid burialavoid contactClimate change adaptationPisciculture and aquariaMechanical engineeringArtificial reef
The utility model discloses an anti-settling artificial fish reef, which comprises an artificial fish reef body, a bottom plate; the artificial fish reef is arranged above the bottom plate; the sleeve is arranged on the upper wall surface of the bottom plate; the connecting rod is arranged in the sleeve, and the top end of the connecting rod extends out of the sleeve; one ends of the first supporting rods are connected with the outer surface of the connecting rod, and the other ends of the first supporting rods are connected with the lower wall surface of the artificial fish reef; one end of the second supporting rod is connected with the outer surface of the first supporting rod, and the other end of the second supporting rod is connected with the upper wall surface of the bottom plate; the fixing assembly is arranged on the lower wall face of the bottom plate and used for fixing the bottom plate, under the action of the bottom plate, a sleeve, a connecting rod, a first supporting rod and a second supporting rod, the artificial fish reef can be supported, the artificial fish reef can be prevented from making contact with sludge or silt in water, the artificial fish reef can be prevented from being buried by the sludge or silt in water, and the artificial fish reef is prevented from being damaged. And convenience is brought to people.
Owner:DALIAN MODERN OCEAN RANCH GRP CO LTD
Physical simulation test device for loess landslide
The utility model discloses a loess landslide physical simulation test device, including simulation test device main part, the soil recovery groove and the roof are installed on simulation test device main part, the roof below is installed with the inclined plane board, and the inclined plane board is located soil recovery groove top, is equipped with the suspension mechanism on the inclined plane board, including the front lift rod and rear lift rod, the utility model discloses, introduce the suspension mechanism in loess landslide simulation test system, after simulation test official start, use suspension mechanism and carry the inclined plane board of loess of test to the established simulation slope position of promotion, for the reliability and stability of guaranteeing the adjustment component in the test process, the adjustment component scientific and reasonable setting is in the upper area of inclined plane board, through this layout mode, when loess landslide phenomenon, can effectively prevent the loess that slides to the adjustment component formation bury, avoid the operation failure of adjustment component due to loess bury, thereby ensure that the whole simulation test can be according to the preset scheme accurately, orderly advance.
Owner:XINJIANG UNIVERSITY
Nickel phosphide catalyst limited by ordered mesoporous carbon, preparation method of nickel phosphide catalyst and application of nickel phosphide catalyst to preparation of sorbitol by catalyzing cellulose
ActiveCN119186607AImprove reduction efficiencyprevent sinteringPhysical/chemical process catalystsPreparation by hydrolysisCelluloseNickel catalyst
The invention belongs to the technical field of catalyst preparation, and provides an ordered mesoporous carbon confined nickel phosphide catalyst, a preparation method thereof and application of the ordered mesoporous carbon confined nickel phosphide catalyst in catalyzing cellulose to prepare sorbitol. The adopted phytic acid has a strong chelation effect, each phytic acid molecule can be complexed with six nickel ions, so that the ratio of nickel to phosphorus in the phytic acid nickel is relatively fixed, and due to tight complexation of nickel and phosphorus, the high phosphorus utilization rate can be realized by controlling the volume space velocity of flowing air and flowing hydrogen, and the yield of the product is improved. The generated hydrogenation active center is pure-phase Ni2P. Besides, the catalyst precursor is firstly subjected to heat treatment in the atmosphere of flowing air, so that oxygen is introduced, the content of carbon species is reduced, and the situation that excessive carbon species can bury a metal active center is avoided; and then, the atmosphere is switched into a flowing hydrogen atmosphere, and the temperature is continuously increased for reduction treatment, so that the nickel phytate is reduced to generate a Ni2P active center, and the content of pure-phase Ni2P is further increased.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI