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Medical wastewater disinfection treatment system
PendingCN119191620AGuaranteed PenetrationImprove disinfection effectWater/sewage treatment by centrifugal separationWater treatment compoundsUltraviolet irradiationMedical treatment
The present invention relates to the technical field of wastewater treatment, and discloses a medical wastewater disinfection treatment system, which comprises a disinfection tank, and further comprises: a disturbance assembly, which is used for stirring wastewater in the disinfection tank to make the wastewater present a vortex shape; the ultraviolet lamp is arranged in the disinfection tank and located at the axis position of the disinfection tank, and an ultraviolet irradiation area is formed above the center of a formed vortex; the at least two liquid discharge pipes are connected to the outer wall of the disinfection tank, the two liquid discharge pipes are vertically distributed, the horizontal height of each liquid discharge pipe is higher than that of the ultraviolet lamp, and an electromagnetic valve is mounted at a water inlet of each liquid discharge pipe. By controlling the opening height of the liquid discharge pipe and the stirring amplitude of the disturbance assembly, wastewater with different depths and colors can be subjected to irradiation disinfection treatment, the penetrating power of ultraviolet rays is ensured, and the disinfection effect on pathogens in the wastewater is improved.
Owner:WUHAN INST OF TECH +1
Seal welding method for tube plate of outward-extending tube of nuclear power spent assembly
PendingCN119260116AGuaranteed PenetrationImprove welding qualityNuclear energy generationArc welding apparatusNuclear powerSpot welding
The invention belongs to the technical field of welding, and particularly relates to a sealing welding method for a nuclear power spent assembly overhanging type pipe and pipe plate. Positioning expansion is carried out by adopting a mechanical method; automatic TIG helium arc welding is adopted for welding, helium and argon mixed gas serves as welding shielding gas, a cerium tungsten electrode serves as an electrode, and all-position rotary welding is conducted after arc starting. Spot welding is replaced by mechanical expansion, and almost no gap exists between the tube and the tube plate, so that the welding method is more stable; according to the method, the welding quality is stable (the minimum leakage drift diameter of the root is stable, and welding defects do not exist), the welding efficiency is high (the welding efficiency is two times that of conventional argon arc welding), and the method has important significance on nuclear power outward-extending pipe and pipe plate seal welding.
Owner:HARBIN WELDING INST LTD
Welding structure of large-diameter pipeline
The welding structure comprises a first pipeline and a second pipeline which are arranged in a butt joint mode, a V-shaped groove is formed in the butt joint position of the pipe wall of the first pipeline and the pipe wall of the second pipeline, an opening of the V-shaped groove faces the interior of the pipeline, and a ceramic gasket is arranged outside the V-shaped groove. The bottom layer, the filling layer and the covering layer are sequentially welded in the V-shaped groove in an FCAW-G welding mode; according to the welding structure of the large-diameter pipeline, the FCAW-G welding technology is applied to welding of the large-diameter pipeline, and the quality requirements of relevant welding preparation specifications are completely met. The CO2 single-side welding of the ceramic lining greatly improves the welding efficiency and obtains a good economic effect in practical application.
Owner:POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
In-situ torsion experiment device for X-ray CT (Computed Tomography)
ActiveCN224216479Usmooth transmissionWith self-locking functionMaterial analysis using wave/particle radiationStrength propertiesComputed tomographyElectric machinery
The utility model relates to an in-situ torsion experiment device for X-ray CT (Computed Tomography), and belongs to the technical field of scientific instruments for in-situ torsion experiments for X-ray CT. Comprising a driving assembly, a torque sensor and a clamp assembly. Two ends of a shaft of the torque sensor are respectively connected with the driving assembly and a clamp. The driving assembly comprises a motor, an outer shell, a worm gear and a worm, the worm gear and the worm are rotationally arranged in the outer shell and meshed, the upper end of the worm gear is in key connection with the lower end of the torque sensor, and one end of the worm is connected with the output end of the motor. The driving assembly is stable in transmission during an experiment, has a self-locking function, prevents reverse rotation, improves the detection accuracy, is compact in structure, has a large transmission ratio, is suitable for speed reduction, is low in noise and small in vibration, and effectively prevents the influence on other works in a laboratory.
Owner:HANGZHOU MICRONANO FACTORY TECHNOLOGY CO LTD
High pressure jetting impact head
The utility model discloses a high pressure jet formula impact head, including sinking pipe, impact head and support plate, the support plate is two, two the support plate radial setting at sinking pipe bottom end export place, be equipped with rotating shaft between the support plate, the rotating shaft is hinged with first closed door and second closed door, first closed door and second closed door are hinged respectively in rotating shaft both sides, the bottom port of sinking pipe is equipped with two with first closed door and second closed door cooperation's first bevel and second bevel that lean to upwards. The utility model has the beneficial effects that: guarantee the penetration ability to the stratum, have promoted the structural stability and durability of impact head, have improved construction efficiency.
Owner:SHANGHAI ZHENZHONG CONSTR MASCH TECH CO LTD
A production method of high-corrosion-resistance high-strength galvanized steel strand
ActiveCN121852842BGuaranteed Penetrationavoid brittleHot-dipping/immersion processesWaste productUltimate tensile strength
The application provides a production method of high-corrosion-resistance and high-strength galvanized steel strand, relates to the technical field of hot-dip plating, and comprises the following steps: collecting hot-dip plating related characteristic parameters and setting basic hot-dip plating time; pre-processing the hot-dip plating related characteristic parameters and outputting a hot-dip plating calibration coefficient; establishing a coupling formula and obtaining a hot-dip plating calibration time; collecting strength interference characteristic parameters; based on the collected strength interference characteristic parameters and the obtained actual hot-dip plating required time, calculating a tensile strength prediction score of the produced galvanized steel strand, and determining the eligibility of the galvanized steel strand prepared under the current working condition parameters. The application calculates a most suitable galvanizing time, ensures that the zinc layer is fully penetrated, and avoids excessive reaction to cause the steel strand to be brittle. Meanwhile, the application can predict whether the tensile strength of the finished product is qualified before production, realizes dynamic optimization, early warning and self-learning in the whole process, and effectively reduces the waste product rate.
Owner:LIAONING TONGDA BUILDING MATERIAL IND CO LTD
A holographic inverse scattering imaging system and method
The present invention discloses a holographic inverse scattering imaging system and method. The incident field of the inverse scattering system is generated by a broadband circularly polarized antenna, and the scattering field is received by a broadband dual-polarized antenna. The holographic inverse scattering imaging method of the present invention combines the polarization characteristics of scattering information and the frequency domain characteristics of multiple frequency points. Based on the discrete dipole approximation theory, the received full-polarization scattering information is used as the input condition of imaging at one time, and is equivalent to an inverse source problem. For the results of the inverse source problem at multiple frequency points, they are equivalent to the results of the frequency domain characteristics of the wave source corresponding to each imaging grid element. By performing IFFT on the frequency domain information of the equivalent wave source, the characteristics of the equivalent wave source in the quasi-time domain can be obtained, and the result of the starting position in the quasi-time domain is selected as the inversion result of the target.
Owner:BEIJING INST OF TECH
Large pipeline pressure u-shaped insertion repair device and repair method
The application relates to the technical field of pipeline penetrating repair, and discloses a large pipeline U-shaped penetrating repair device and a repairing method, which can be matched with a pipeline to be repaired to complete the penetrating repair operation, the insertion pipeline used for penetrating is in a pre-treatment mode, the operation can be carried out outside the pipeline to be repaired, the limitation of the construction space is effectively reduced, the operation is more convenient and easy, and the pipeline to be repaired, the insertion pipeline, a traction assembly and a pipeline pressing assembly are included, the insertion pipeline is used for forming the penetrating repair in the pipeline to be repaired, the traction assembly includes two traction plate frames, the two traction plate frames are fixedly connected with the insertion pipeline, the pipeline pressing assembly includes a main frame, a lower pressing hydraulic cylinder, a plurality of supporting rollers, a plurality of first side pushing rollers and a plurality of second side pushing rollers, the supporting rollers are rotationally installed in the main frame, an adjusting mechanism is installed in the main frame, and the first side pushing rollers and the second side pushing rollers are installed in the adjusting mechanism.
Owner:HEBEI LUTONG ENG MATERIALS CO LTD
Equal-aperture deep penetration perforating bullet
PendingCN119491688ASmall jet diameter variationGuaranteed PenetrationFluid removalShaped chargeStructural engineering
The equal-aperture deep-penetration perforating bullet comprises a shaped charge liner, the shaped charge liner is a double-cone cover, and the cone angle of an upper cone of the double-cone cover is larger than that of a lower cone of the double-cone cover; the shaped charge cover is made of tantalum powder, copper powder, tungsten powder and copper-coated lead powder; according to the equal-aperture deep penetration perforating bullet, the effect of rod-shaped jet flow can be formed, so that holes uniform in size are formed in the casing pipe, the stretching length of the metal jet flow can be kept after the metal jet flow passes through the casing pipe, the penetration depth performance is further guaranteed, and the penetration depth performance is not reduced while the equal-aperture effect is achieved.
Owner:DAQING PETROLEUM ADMINISTRATION +2
Ventilation wall module and using method thereof
PendingCN121772178APrevent accidental upward movementavoid liftingCooling/ventilation/heating modificationsStructural engineeringEnvironmental geology
Owner:常熟市兆亿金属制品有限公司
A wafer loading and unloading device, a double-sided chemical mechanical polishing system and method
ActiveCN117885033Bsuitable for transmissionGuaranteed penetrationLapping machinesGrinding feed control
This invention relates to the field of chemical mechanical polishing (CMP) technology, and discloses a wafer pick-and-place device, a CMP system and method for double-sided processing. The wafer pick-and-place device has a support structure including a mounting stage, a support member, and at least three support columns. The support member is adapted to slide in a direction perpendicular to the mounting stage under drive. The at least three support columns are spaced apart along the outer edge of the support member on the mounting stage and are adapted to receive the wafer. When the support member is driven to slide away from the mounting stage to the support state, the plane of the support member is higher than the plane of the end of the support column away from the mounting stage. The flipping structure includes a wafer pick-and-place structure, which is adapted to extend under drive between the support member and the wafer to remove the wafer from the support structure or fix the wafer to the pick-and-place structure and then flip it back to the support structure. The support structure has two support states, which, combined with the simple flipping structure, enables the flipping of the wafer surface, facilitating subsequent double-sided processing of the wafer and improving work efficiency.
Owner:BEIJING SEMICORE MICROELECTRONICS EQUIPMENT CO LTD
A fuel-powered drone for pesticide spraying
The present application relates to a fuel-driven drone for pesticide spraying, which belongs to the field of agricultural plant protection and drone pesticide spraying, and includes a drone body, an engine is arranged on the drone body, an exhaust pipe is arranged on the engine, and a plurality of pesticide boxes are arranged at the bottom of the drone body, and the exhaust pipe is connected to an exhaust gas purification device; the exhaust gas purification device includes an air collecting box fixedly connected to the drone body, a purification cylinder is arranged on the drone body, an air intake pipe is fixedly connected to one side of the purification cylinder, and ammonium bicarbonate solution and catalyst are contained in the purification cylinder, an air storage box is arranged on the drone body, an air guide pipe is arranged on the top of the purification cylinder, and the end of the air guide pipe away from the purification cylinder extends into the air storage box, and the bottom of the air storage box is fixedly connected to an air outlet pipe; a spray box is fixedly connected to the drone body, and an atomizing nozzle is connected to the spray box. The present application has the effect of reducing the exhaust pollution of the drone and applying the exhaust gas to pesticide spraying.
Owner:QINGDAO SHITIAN INNOVATION AVIATION TECH CO LTD
Switch shell
ActiveCN224218412UEasy to removequick changeCouplings bases/casesTransmissionMechanicsDust abatement
The utility model provides a switch housing. The switch housing comprises a bottom housing, a housing cover arranged at the upper end of the bottom housing, a circuit board installed in the bottom housing, and a plurality of network ports which are installed at the front end of the bottom housing and are in point connection with the circuit board. The heat dissipation part is arranged on the bottom shell and the shell cover; the dust removal part is arranged on the bottom shell and the assembling parts on the network ports, and the assembling parts are fixed at the rear end of the bottom shell; the connecting part is installed on the bottom shell and the shell cover, the heat dissipation part of the switch shell forms forced air cooling through cooperation of double heat dissipation fans and heat dissipation fins, the temperature of a circuit board is reduced, the dust removal part utilizes heat dissipation airflow, the heat dissipation airflow is directionally jetted to a network port through an air collection sleeve and an air transmission channel, and zero-power-consumption automatic dust removal is achieved; the problems that a traditional switch shell is insufficient in heat dissipation and serious in dust accumulation are effectively solved, and the fault rate of network ports is reduced.
Owner:BEIJING SHUZHIYING TECHNOLOGY CO LTD
Production method of high-corrosion-resistance and high-strength galvanized steel strand
ActiveCN121852842AGuaranteed penetrationavoid brittleHot-dipping/immersion processesWaste productUltimate tensile strength
The invention provides a production method of a high-corrosion-resistance and high-strength galvanized steel strand, and relates to the technical field of hot dipping processes, and the production method comprises the following steps: collecting relevant characteristic parameters of hot dipping, and setting basic hot dipping time; the hot dipping relevant characteristic parameters are preprocessed, and a hot dipping calibration coefficient is output; a coupling formula is established, and hot dipping calibration time is obtained; acquiring intensity interference characteristic parameters; and calculating a tensile strength prediction score of the produced galvanized steel strand based on the acquired strength interference characteristic parameters and the acquired actual hot dipping time, and performing qualification judgment on the galvanized steel strand prepared under the current working condition parameters. According to the method, by calculating the most appropriate galvanizing time, it is guaranteed that a zinc layer permeates in place, and steel wire embrittlement caused by excessive reaction is avoided; meanwhile, whether the tensile strength of the finished product is qualified or not can be predicted before production, dynamic optimization of the whole process is achieved, early warning and self-learning are achieved, and the rejection rate is effectively reduced.
Owner:LIAONING TONGDA BUILDING MATERIAL IND CO LTD
Method for welding weld joint between heat exchange tube and tube plate in horizontal direction
PendingCN119634909AReduce difficultyImprove welding qualityNuclear energy generationWelding accessoriesWeld seamWelding process
The invention belongs to the technical field of heat exchange tube and tube plate welding, and discloses a method for welding a weld joint between a heat exchange tube and a tube plate in a horizontal direction, which comprises the following steps of: preparing and assembling an outer-layer heat exchange tube and an outer-layer heat exchange tube plate, and forming a weld joint between the outer-layer heat exchange tube and the outer-layer heat exchange tube plate; an automatic argon arc welding wire matched with the base metal is selected and installed; welding equipment is installed and debugged, specifically, a full-automatic argon arc welding machine without a positioning core rod is adopted, a welding gun of the welding machine is vertically arranged downwards, welding seams of the outer-layer heat exchange tube and the outer-layer heat exchange tube plate are welded in the horizontal direction, and welding parameters are set on the welding machine; installing a tungsten electrode, and adjusting a wire feeding angle, wherein the tip of the tungsten electrode points to a gap between the outer-layer heat exchange tube and the outer-layer heat exchange tube plate; in the welding process, a welding machine visually recognizes and records the positions of the heat exchange tube and the tube hole of the tube plate, and a welding gun automatically moves to the position of the tube hole to achieve automatic welding; and quality detection. Welding quality is improved, welding seam strength is enhanced, and stability and reliability in the welding process are guaranteed.
Owner:SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
Medical wastewater environment-friendly treatment device and treatment method
ActiveCN119409385AGuaranteed Penetrationshort stayWater/sewage treatment by irradiationSpecific water treatment objectivesRotational axisChlorine dioxide
The invention relates to an environment-friendly treatment device and method for medical wastewater. The treatment device comprises a treatment box; the filter barrel is rotationally mounted in the treatment box, the rotating axis of the filter barrel is parallel to the horizontal plane, a plurality of filter holes are formed in the outer circumferential wall of the cambered surface of the filter barrel in a penetrating manner, and a transparent panel is arranged at one axial end of the filter barrel; the illumination direction of the first ultraviolet lamp corresponds to the transparent panel; the slag scraping mechanism is used for scraping suspended matters adhered to the inner circumferential wall of the cambered surface of the filter barrel when the water level in the filter barrel rises to a set value; the driving mechanism is used for driving the filter barrel to rotate in the treatment box; the input end of the front disinfection tank is communicated with a wastewater source, and the output end of the front disinfection tank is connected with a water supply pipe extending into the filter barrel; and a chlorine dioxide disinfection system is arranged in the front disinfection tank. Medical wastewater and suspended solids thereof can be comprehensively disinfected through the chlorine dioxide disinfection system and the first ultraviolet lamp, and chlorine dioxide residues and affiliated products thereof can be decomposed.
Owner:HUBEI ZHONGBI ENVIRONMENTAL PROTECTION TECHCO
Head and neck exposed airbag sealed capsule tank microbubble disabled old people bathing equipment
The application discloses a head and neck exposed air bag sealed capsule warehouse micro-bubble disabled old people bathing equipment, which comprises a warehouse body and a corresponding warehouse cover, the warehouse body is a single-side full opening type structure, the warehouse cover is hinged to the warehouse body, and a bearing plate and an independent lifting bed plate are arranged in the warehouse body; and one end of the bearing plate is hinged to the inner wall of the warehouse body. The head and neck exposed air bag sealed capsule warehouse micro-bubble disabled old people bathing equipment is characterized in that the bearing plate and the independent lifting bed plate are matched with the micro-bubble suspension technology, so that the back of the disabled old people is automatically separated from the bed during soaking, no turning over and no manual assistance are needed for cleaning without dead angle, two sets of pipeline systems are independently arranged in the interlayer, physical isolation of bathing water and disinfecting water is realized, the inner wall of the warehouse body is flat and free of exposed components, the problem that traditional equipment is difficult to clean and disinfect due to dirt accumulation is effectively solved, nursing efficiency and old people experience are improved, and the work load of nursing personnel is reduced.
Owner:新野县泽恩家科技有限公司
Electric zoom multifunctional marine searchlight
ActiveCN222577993UGuaranteed Penetrationgood effectWaterborne vesselsLight fasteningsLight spotOptical axis
The utility model discloses an electric zoom multifunctional marine searchlight which comprises a case, an LED light source assembly, a color matching assembly, a first optical assembly, a second optical assembly, a third optical assembly and a zoom assembly are sequentially arranged on the case along an optical path, and the zoom assembly controls the first optical assembly and the second optical assembly to move back and forth along the optical axis direction. The irradiation distance and the irradiation range are achieved by adjusting the size of light spots of the LED light source assembly, the color temperature change in sunny days and foggy days can be changed through the color matching assembly, it is guaranteed that the irradiation distance is long and the irradiation range is wide in the sunny days, and the penetrating power in the foggy days is guaranteed by changing the color temperature in the foggy days. According to the marine searchlight, switching of two light effects of soft light and light beams can be achieved in the marine searchlight, the effect is good in the light beam mode, the edge is sharp, and meanwhile the variable angle range can be from the minimum 2.2 degrees to the maximum 32 degrees in the zoom mode.
Owner:GUANGDONG NANMU LIGHTING TECH CO LTD
Mould for preparing porous aluminum oxide ceramic
ActiveCN224196990Uavoid position deviationPlay a positioning functionDischarging arrangementShaping press ramMechanical engineeringAlumina ceramic
The utility model relates to the technical field of ceramic preparation, in particular to a mold for porous alumina ceramic preparation, which comprises a lower mold base and an upper mold base, a mold cavity is arranged in the middle of the top surface of the lower mold base, a detachable vertical rod is arranged on a bottom plate of the mold cavity, and a movable bottom plate matched with the mold cavity and slidably sleeved on a rod body of the vertical rod is arranged in the mold cavity. An extrusion die plate matched with the die cavity is arranged in the middle of the bottom face of the upper die base, guide rods are arranged at the two ends of the upper die base, the lower ends of the guide rods penetrate through the lower die base in a sliding mode and are provided with inward bending parts, and ejector rods capable of penetrating through a bottom plate of the die cavity are arranged on the top faces of the inner ends of the bending parts; the upper end of the guide rod is connected with the upper die holder, and the lower end of the guide rod penetrates through the lower die holder in a sliding manner, so that when the die is installed, the function of positioning the lower die holder and the upper die holder can be achieved, position deviation of the lower die holder and the upper die holder is prevented, and the function of convenient installation is achieved.
Owner:LUOYANG CEN LON CERAMICS
Laser welding process for small-pipe-diameter pipe fitting
InactiveCN119237926Afull flowgood repeatabilityWelding/cutting media/materialsSoldering mediaPipe fittingLaser light
The invention belongs to the technical field of welding, and particularly relates to a laser welding process for a small-pipe-diameter pipe fitting. In the laser welding process, a high-stability and high-precision controllable laser light source serves as a heat source to conduct single-face laser irradiation, the temperature of the irradiation position is precisely controlled within a set range, 360-degree overall heating is achieved in a heat conduction mode, it is guaranteed that the temperatures of all positions of welding flux exceed the melting point of the welding flux, and the welding flux flows sufficiently; uniform filling is achieved, and the effect of overall welding of the pipe fitting is finally achieved; overall laser welding of the small-diameter pipe fitting on the premise that the small-diameter pipe fitting does not rotate can be achieved. And laser welding with high degree of freedom, large fusion depth and high uniformity can be realized in application scenes of small-pipe-diameter radiators, shunt pipes, complex small-pipe-diameter welding and the like.
Owner:SUZHOU LANMU JINGRONG TECHNOLOGY CO LTD
Welding process for single-side welding and double-side forming
PendingCN119634903AEven by forceEnsure full penetrationWelding accessoriesButt weldingStructural engineering
The invention provides a welding process for one-side welding and double-side forming. The welding process comprises the step that a connector on one side of a barrel corresponds to a connecting pipe at one end of a heat exchange assembly. And a welding device is used for conducting spot welding positioning on the barrel connector and the connecting pipe of the heat exchange assembly. Welding devices are respectively fixed on the outer walls of mutually symmetrical nozzles in a plurality of directions on one side of the barrel, and the plurality of welding devices are controlled to work at the same time; wherein the pipe nozzle is arranged on a connector on the outer wall of the cylinder body. And after the welding is completed, the multiple welding devices are disassembled and installed on other non-welded pipe nozzles again, and the welding steps are repeated till all the connectors on one side of the barrel are welded. And the cylinder and the heat exchange assembly are turned over, the spot welding and welding steps are repeated, and welding of the other side of the cylinder and the other side of the heat exchange assembly is completed. Automatic TIG welding of the horizontally-fixed inner wall of the pipe with the limited external space is achieved, and single-face welding and double-face forming of all-position butt welding seams with the welding groove alignment tolerance smaller than or equal to 2 mm and the gap smaller than or equal to 0.5 mm are achieved.
Owner:SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD +1
Fire-fighting pipeline detection device and lithium battery charging and discharging equipment fire-fighting pipeline detection system
ActiveCN224152676Uachieve cloggingRealize detectionGeological measurementsFire protectionMechanical engineering
The utility model discloses a fire-fighting pipeline detection device and a lithium battery charging and discharging equipment fire-fighting pipeline detection system, an air duct with a gas inlet and a gas outlet which are opposite and communicated along a first direction is formed in a butt joint piece, and the gas inlet is configured to allow a spray head of a fire-fighting pipe to extend into; the test piece is communicated with the gas outlet, and the test piece can be used for detecting the flow and / or speed of gas introduced into the air duct through the fire-fighting pipe when the gas is discharged from the gas outlet. Meanwhile, the gas inlet is flared relative to the gas outlet in the first direction, so that when the butt joint piece is in butt joint with the spray head of the fire-fighting pipe, the spray head can be ensured to extend into the air channel of the butt joint piece through the flared air channel even if the position of the spray head has certain deviation, and the fire-fighting pipe is prevented from being damaged. Therefore, the gas can be effectively captured and measured, and the connection fault tolerance of the fire-fighting pipeline detection device and the fire-fighting pipe spray head can be improved.
Owner:ZHUHAI TITANS NEW POWER ELECTRONICS CO LTD
A detection device for automatic identification of living beings in a room
ActiveCN115047533Bachieve protectionPlace stableOptical detectionStructural engineeringLife detection
The application belongs to the technical field of life detection equipment, and discloses an indoor life automatic identification detection device, which comprises a first plate and a second plate, an intermediate shaft is fixedly connected between the first plate and the second plate, a sleeve is movably sleeved on the outer surface of the intermediate shaft, and a connecting plate is fixedly connected to the outer surface of the sleeve.
Owner:ZHEJIANG ZHONGCHEN URBAN FIRE AUTOMATIC ALARM DISTANCE MONITORING MANAGEMENT CO LTD
Precursor material for preparing single-crystal positive electrode material, preparation method of precursor material, single-crystal positive electrode material and secondary battery
PendingCN119447242AHelps growModerate surface areaCell electrodesSecondary cellsElectrical batterySingle crystal
The invention relates to the technical field of secondary batteries, in particular to a precursor material for preparing a single-crystal positive electrode material, a preparation method of the precursor material, the single-crystal positive electrode material and a secondary battery. The precursor material has a hollow structure and comprises a shell and a core material positioned on the inner surface of the shell; the core material comprises a hydroxide containing a fluxing element A, and A comprises at least one of Sr, Y, Ba and Ce; the core material also comprises at least one of Ni, Mn, Co and Fe; the shell comprises a hydroxide containing at least one of Ni, Mn, Co and Fe; and the D50 particle size R3 of the precursor material is more than 4.5 mu m and less than or equal to 18 mu m. The large-particle-size precursor material is hollow inside and compact outside, and the core material contains a fluxing element A, so that growth and cracking of single-crystal particles during high-temperature roasting are facilitated, and micron-sized single-crystal positive electrode particles can be sintered without higher sintering temperature or excessive lithium salt or molten salt.
Owner:JIANGXI JIANA ENERGY TECH CO LTD +3
Side-opening tailgate and vehicle
This application discloses a side-opening tailgate and a vehicle. The side-opening tailgate includes a tailgate body and an electromagnetic wave transmitting and receiving device installed on the tailgate body. The tailgate body has a three-layer structure, including a tailgate outer panel, a metal frame, and a tailgate inner panel connected in sequence. The middle metal frame is made of metal to meet the strength requirements of the tailgate, while the tailgate outer panel is made of non-metallic material, making it lighter. The electromagnetic wave transmitting and receiving device is installed on the inner side of the tailgate outer panel. The electromagnetic wave transmitting and receiving device can be used to locate and / or identify obstacles. The non-metallic material of the tailgate outer panel ensures the penetration of electromagnetic wave signals. The above structure can ensure the strength of the side-opening tailgate while reducing the overall weight of the side-opening tailgate, and the side-opening tailgate has more functions.
Owner:DONGFENG MOTOR GRP
Offshore gas storage old well sealing layer superfine cement paste system and preparation method thereof
PendingCN119613019AGuaranteed Penetrationhigh strengthDrilling compositionMicrofine cementCompressive resistance
The invention discloses an offshore gas storage old well sealing layer superfine cement paste system which comprises the following components in parts by weight: 100 parts of oil well superfine cement, 1-3 parts of a suspending agent, 1-3 parts of a nano reinforcing agent, 1-3 parts of an expanding agent, 3-5 parts of micro silicon, 6-7 parts of a fluid loss agent, 0-0.35 part of a retarder, 0.05-0.06 part of a defoaming agent and 54-63 parts of water. The main technical indexes of the gas storage old well sealing layer superfine cement paste are as follows: the adaptive temperature is 60-100 DEG C; the density of the cement paste is 1.70-1.80 g / cm < 3 >; the initial consistency is less than 30Bc; the free liquid of the cement paste is 0; the upper and lower density difference of the cement stone column in a settlement stability test is less than 0.02 g / cm < 3 >; the water loss of the cement paste is less than 50ml; the 24-hour compressive strength of set cement is greater than or equal to 14 MPa; the gas permeability of the set cement is less than 0.05 * 10 <-3 > mu m < 2 >, the technical requirements of the gas storage old well seal layer superfine cement paste are met, and the field application result shows that the result meets the engineering requirements.
Owner:CNPC BOSTAR (TIANJIN) ENGINEERING TECHNOLOGY CO LTD +2
Wind noise resistant earphone
ActiveCN222441848UEasy to disassemble and replacereduce impactEarpiece/earphone attachmentsHeadphonesPickup
The utility model discloses a wind noise resistant earphone, which comprises an earphone main body and a rod body connected with the earphone main body, the rod body is provided with a head end and a tail end, the head end is connected with the earphone main body, the tail end is provided with a sound pickup hole coupled with external acoustics, the tail end is detachably connected with a wind-proof piece, the wind-proof piece covers the sound pickup hole, and the head end is connected with the earphone main body. The windproof piece can be penetrated by sound; therefore, the wind noise resistance of the earphone can be effectively improved, the influence of wind noise is reduced, the pickup effect of the microphone is effectively improved, and the call quality in a wind noise environment is improved.
Owner:RISUNTEK INC
Servo band saw paper cutter
ActiveCN222387104Uavoid tearingefficient cuttingMetal working apparatusControl engineeringControl theory
The utility model provides a servo band saw paper cutter, which belongs to the technical field of paper cutters and comprises a cutting table. The lifting plate is arranged on the upper side of the cutting table; the limiting cylinder is fixedly connected to the lower end of the lifting plate; the limiting groove is formed in the lower end of the limiting cylinder; the rotating sleeve is fixedly connected to the lower end of the limiting cylinder; the two-way screw rod is rotationally connected into the rotating sleeve; the screwing handle is fixedly connected to one side end of the two-way screw rod; the number of the cutting assemblies is multiple, each cutting assembly comprises a sliding block, a cutting saw and a threaded groove, and the sliding blocks are slidably connected into the limiting grooves, so that the cutting saws on the two sides of the two-way screw are attached more tightly or spaced farther, the number of cut sawteeth on paper is changed, and paper of different materials can be effectively cut.
Owner:GUANGZHOU YADI PRINTING CO LTD
A blanket cleaning device and cleaning method for tobacco processing
The present invention provides a blanket cleaning device and a cleaning method for tobacco processing, which relate to the technical field of tobacco processing, wherein a blanket cleaning device for tobacco processing comprises a spraying part, a supporting part and a transmission part, wherein the spraying part comprises a spraying pipe, a needle nozzle and a first driving motor, the supporting part comprises a first supporting column, a first telescopic rod, a second supporting column and a second telescopic rod, the first telescopic rod is provided with a second driving motor, the second telescopic rod is provided with a third driving motor, the transmission part is provided between the first telescopic rod and the second telescopic rod, the transmission part is provided with a transmission shaft, a transmission roller and a fourth driving motor, and a water pressure sensor is provided below the transmission shaft. The blanket cleaning device for tobacco processing of the present invention has a simple structure, can adjust the distance between the nozzle and the blanket, ensure that the high-pressure water needle can penetrate the blanket at each stage of the blanket operation, can thoroughly clean the blanket surface, dehydrate evenly, and achieve full-width flushing without dead angles.
Owner:JIANGSU XINYUAN TOBACCO SHEET CO LTD
Wind turbine nacelle active noise reduction device
The application relates to the field of wind turbine nacelle noise reduction technology and discloses a wind turbine nacelle active noise reduction device, which comprises a sound collecting part, a noise reduction part, a controller and a protection assembly. The sound collecting part is arranged in the wind turbine nacelle to collect noise. The noise reduction part is arranged in the wind turbine nacelle to emit directional sound waves. The controller is electrically connected with the sound collecting part and the noise reduction part, is used for receiving noise signals and generating reverse sound wave control signals. The protection assembly comprises a sound collecting protection part, the sound collecting protection part comprises a protection box, at least part of the sound collecting part is arranged in the protection box, and a sound collecting end of the sound collecting part faces a first side of the protection box. A mesh plate is arranged on the side to enable sound to enter the protection box. The device can actively reduce noise of local noise sources in the nacelle, meanwhile, the protection assembly can adapt to the complex environment of the wind turbine nacelle, and the long-term operation reliability is ensured.
Owner:HUANENG GUANGXI CLEAN ENERGY CO LTD +1