416results about How to "Great practicability" patented technology

The utility model discloses a stable combustion device for high-pressure rotating sliding arc plasma ignition. The stable combustion device comprises a cathode assembly, a locknut, an insulating supporting ring, a connecting plate, a rear side air inlet, an anode air duct, a rotational flow air chamber and a front side air inlet. The cathode assembly comprises a binding post, a guide rod, a central electric pole, a conical cathode seat and a central cathode inner core which are sequentially connected into a whole in a threaded mode, the cathode assembly is fixed to the center of the anode air duct through an insulating supporting ring, and a multi-groove flow guide ring, a rotational flow air chamber and a rotational flow hole are formed in the front side of the anode air duct; after medium gas is introduced, under the excitation of an electric field, a plasma arc generated between the electrodes slides to the central cathode inner core along the conical cathode seat under the pushing of airflow, and a cycle process of breakdown-stretching-arc quenching-re-breakdown is periodically carried out, so that sliding arc plasma is generated; meanwhile, the plasma arc has the advantages of being high in energy density, improving the chemical reaction rate and the like, and ignition and stable combustion functions are provided for the industrial combustor. The structure is simple, starting is rapid, and the electrode service life is long.

The utility model provides a blind hinge capable of realizing rotation angle positioning, which comprises a rotating arm main body, and a door frame side fixing seat component and a door leaf side fixing seat component are respectively arranged at two ends of the rotating arm main body. The blind hinge capable of achieving rotation angle positioning has the advantages of being high in stability, convenient to adjust, capable of achieving 90-degree opening positioning and the like, and has extremely high stability through unique structural design in the design process; and meanwhile, by matching with adjustment of the door frame side fixing seat assembly and the door leaf side fixing seat assembly, the using process is very convenient and fast, more importantly, angle positioning can be achieved, and the effect which cannot be achieved in the prior art is achieved, so that the door frame side fixing seat assembly has great economic value and practical value.

The utility model discloses a multi-stage cyclone desalting incineration boiler for salt-containing waste liquid, and is suitable for the technical field of industrial waste liquid incineration. The boiler comprises a boiler body, waste liquid spray guns, a low-temperature combustor, a medium-temperature combustor, a smoke outlet, a high-temperature combustor and a slag cooler, the boiler body comprises a low-temperature section boiler, a medium-temperature section boiler and a high-temperature section boiler which are arranged at low, medium and high positions, the low-temperature section boiler is provided with a plurality of waste liquid spray guns which tangentially enter waste liquid of the low-temperature section boiler, and the medium-temperature combustor is arranged above the waste liquid spray guns. A medium-temperature combustor is arranged at the upper part of the medium-temperature section furnace, a high-temperature combustor is arranged at the upper part of the high-temperature section furnace, central pipes are respectively arranged in the low-temperature section furnace, the medium-temperature section furnace and the high-temperature section furnace, connecting pipes are arranged at the tops of the central pipes, and slag coolers are obliquely arranged at the bottoms of the low-temperature section furnace, the medium-temperature section furnace and the high-temperature section furnace; segmented desalination, solid desalination and cyclone desalination are adopted, the desalination efficiency of the incineration boiler is effectively improved, and the device is simple in structure, long in service life, low in cost, low in failure rate, high in safety and small in maintenance workload.

The invention discloses a dynamic loading method and system for embedded equipment. The dynamic loading method comprises the following steps that S1, a host burns firmware and a dynamic library file into a storage medium of the embedded equipment; s2, firmware is operated in a memory of the embedded device; in the step S1, a dynamic library generation module generates dynamic library source codes into corresponding dynamic library files according to functions, and firmware source codes are integrated into a dynamic loading module and compiled to generate firmware files; wherein information corresponding to the dynamic library file is stored in the firmware file, and the information at least comprises a dynamic library name, an initial address of the dynamic library file in the storage medium and a memory size occupied by the dynamic library file in the storage medium; in the step S2, when firmware runs to load a certain library function, the corresponding dynamic library file is found in the storage medium according to the information of the corresponding dynamic library file stored in the firmware file, the dynamic library file is mapped into the memory, and a global dynamic symbol table of the dynamic library is constructed to call the library function.

The invention relates to a single cell capturing method, which comprises the following steps that a single cell to be captured is injected into a micro-fluidic chip containing a micropore coupling micro-cavity through fluid, the chip comprises a base material and a main channel arranged on the base material, the surface of the main channel is provided with a plurality of micropores and micro-cavities corresponding to the micropores, and the micro-cavities are communicated with the main channel; after the main channel is filled with the fluid, the fluid in the main channel is kept static, so that the single cells fall into the micropores under the action of gravity; after the single cells are captured by the micropores, the fluid is introduced again to discharge the uncaptured single cells; and the chip is overturned and inclined after being discharged, so that the single cells enter the micro-cavity. The technical problems that in the prior art, single cell capture efficiency is low, capture precision is insufficient, complex external equipment is needed for control, and single cell capture, culture and the like cannot be completed in the same chip are solved.

A single-antenna dynamic initialization method applied to INS / GPS integrated navigation comprises the steps that when the vehicle speed is larger than 20 km / h and GPS signals are good, the course angle and the pitch angle calculated through the GPS northeast speed serve as attitude information of dynamic initialization to be used for updating an attitude matrix, appropriate observed quantities are established for Kalman filtering fusion, and the attitude matrix is calculated through the dynamic initialization. And the error of the inertial navigation system is estimated and corrected on line, so that the precision of integrated navigation is improved. The method can be applied to a single-antenna GPS / SINS inertial integrated navigation initial alignment scheme, the algorithm is easy to implement and operate, the required dynamic initialization condition is easy to meet, the method has wide practicability, and through actual sports car test verification, when the vehicle speed is larger than 20 km / h, the track angle is initialized and calibrated through GPS speed information calculation, and the accuracy of track angle calibration is greatly improved. The filter convergence speed is high, the navigation positioning precision is high, and the method has important significance on research and development of the automatic driving technology.

The invention belongs to the technical field of drier preparation, and particularly relates to a dishwasher drier and a preparation method and application thereof. The dishwasher drier provided by the invention comprises fatty alcohol-polyoxyethylene ether, a fatty alcohol polyethylene / polypropylene ether copolymer, water-based fluorine-containing polyether siloxane, a polyacrylate modified polymer, sodium isooctanol sulfate, a chelating agent, a suspension stabilizer, a preservative and water. The stainless steel foam inhibitor is applied to an automatic dish-washing machine, and by introducing a modified silicone oil or fluorocarbon compound composite system, a combination of a high-molecular-weight polymer and a low-surface-tension regulator and a biocompatible defoaming agent, the drying performance of the stainless steel surface is remarkably improved, and the foam inhibition effect is optimized; foam generated by protein and an anionic surfactant is efficiently eliminated, meanwhile, environmental protection and sustainability are emphasized, and an efficient, clean and environment-friendly solution is brought to the automatic dish washing machine industry.

The invention provides a comprehensive advanced forecasting method and system for water inrush and mud inrush disaster sources. Belongs to the field of tunnel construction exploration. The system comprises a data collection module, a feature extraction module, a space-time graph neural network (ST-GNN) model, a model training module and an early warning module, a large amount of geological, climate and hydrological data are collected, feature extraction is performed by using a self-encoding neural network, the ST-GNN model is constructed, model training is performed, and a prevention and early warning decision is made. The system is helpful for improving the prevention and coping capacity for water inrush and mud inrush disasters. Particularly, all data are stored on the block chain data sharing platform, so that the security and transparency of the data are ensured, and the reliability and credibility of the data are greatly improved. Generally speaking, the system and the method can accurately predict the time and the place where sudden disasters may occur, give out early warning in time, avoid or reduce the influence of the disasters on life and property of people, and have important practical value.

The utility model discloses a device for separating LNG (Liquefied Natural Gas) and CO (Carbonic Oxide) through dual-circulation refrigeration and cryogenic separation of mixed refrigerants and nitrogen. Comprising a main heat exchanger, a heavy hydrocarbon separator, an MRC low-temperature separator, a low-temperature separator, a hydrogen stripping tower, a hydrogen stripping tower reboiler, an LNG separation tower, an LNG separation tower reboiler, an LNG separation tower return tank, an LNG separation tower condenser, an N2 / CO separation tower, an N2 / CO separation tower reboiler, an N2 / CO separation tower return tank, an N2 / CO separation tower condenser, a mixed refrigerant compressor system and a nitrogen compression system. In addition, due to the fact that a low-temperature separator, a hydrogen stripping tower, an LNG separation tower and an N2 / CO separation tower are arranged in the process, the purity of CO is larger than 98.5% mol, and cold energy is provided for condensation and liquefaction of raw material gas and nitrogen and liquefaction and supercooling of LNG through a mixed refrigerant refrigeration cycle.

The invention discloses a method for realizing metallurgical slag viscosity prediction based on a microstructure and machine learning, and belongs to the technical field of metallurgical slag viscosity prediction. The method comprises the steps that according to specific components of a slag system, Lammps software is adopted for molecular dynamics simulation, and the types and the number of microstructure units of slag are obtained; secondly, establishing a microstructure unit model of the slag by adopting machine learning to obtain the molar content of a structure unit; and finally, inputting the molar content of the structural unit of the to-be-predicted slag obtained from the microstructure model into the deduced and modified slag viscosity prediction equation to obtain a predicted value of the viscosity of the to-be-measured slag. According to the method, the interference of external environmental factors is avoided through a microstructure and machine learning method, the viscosity of the metallurgical slag under different components and different temperature conditions can be quickly and accurately obtained, the precision and stability of predicting the viscosity of the metallurgical slag are remarkably improved, and the cost is greatly reduced.

The utility model discloses a loader gearbox clutch installation tool, which belongs to the technical field of clutch installation tools and comprises a workbench, a groove is arranged in the workbench, a first screw rod is rotatably installed on the side wall of the groove, and a driving block is in threaded connection with the outer side of the first screw rod. And a same fixing block is hinged to one sides of the multiple driving rods, a sliding plate is fixedly mounted at the top of the fixing block, multiple inclined plates are movably inserted into the sliding plate, L-shaped connecting rods are fixedly mounted at the tops of the multiple inclined plates, and fixing plates are fixedly mounted on the inner sides of the multiple L-shaped connecting rods. Through mutual cooperation of the first motor, the first screw rod, the driving block, the driving rod, the fixing block, the sliding plate, the inclined plate, the L-shaped connecting rod, the fixing plate and the rubber pad, the fixing plate and the rubber pad can conveniently fix gearboxes with different sizes, so that the assembly precision and efficiency are greatly improved, and the practicability is wider.

The invention provides an upward horizontal layered filling mining method suitable for multiple thin to extremely thin ore veins, and belongs to the technical field of mining. The mining method comprises the following steps of: dividing an ore body into corresponding middle sections, sections and layers, and tunneling stope connection ways from section roadways to the layers, so that the stope connection ways entering the layers penetrate through each vein between an upper wall and a lower wall; undercutting and tunneling in each vein along the trend of the ore body on the two sides of the stope cross gateway to form undercutting roadways, reserving ore pillars on the two sides of the stope cross gateway, and starting to expand the outer sides of the ore pillars, coping and stoping a room; after stoping and filling of the chambers are completed, stoping and filling are carried out on stope connection ways and pillars on the two sides of the stope connection ways; and then stoping and filling are conducted on all the layers in sequence from bottom to top. Through the mode, the method provided by the invention can realize continuous operation of mining and filling while ensuring safe stoping of multiple thin to extremely thin ore veins, reduce dilution loss and improve economic benefits of mines.

The utility model discloses a workpiece transfer trolley with an automatic turnover positioning stop block. The workpiece transfer trolley comprises a hydraulic turnover oil cylinder, a frame and a tray bracket, the material tray bracket comprises a turning plate, two roller supports symmetrically installed on the left side and the right side of the turning plate, and a turning positioning device installed on the outer sides of the roller supports and used for limiting the position of the material tray. Wheels are arranged at the bottom of the frame, a hydraulic turnover oil cylinder is hinged to the frame through an oil cylinder connecting seat, an oil cylinder piston rod extends upwards to be hinged to an oil cylinder hinge seat through a connector, the oil cylinder hinge seat is fixed to the middle of the bottom face of a turnover plate, and the front side of the turnover plate is hinged to the frame through a left hinge and a right hinge. According to a quenching or normalizing station, the tray can be positioned at different positions and in different directions.

The present invention relates to a solid polymer electrolyte based on poly (vinylidene fluoride-co-trifluoroethylene-co-chlorotrifluoroethylene) (PVTF), comprising: a polymer matrix; the solvent is a N, N-dimethylformamide (DMF) solvent; and lithium bis (trifluoromethanesulfonyl) imide (LiTFSI). The PVTF-based solid polymer electrolyte shows an excellent electrochemical window as high as 5.68 V, significantly higher ionic conductivity at ambient temperature of 1.91 * 10 <-3 > S cm <-1 >, and the PVTF-based solid polymer electrolyte has a glass transition temperature (Tg) of less than-38 DEG C.

The invention relates to the technical field of image processing, in particular to an intelligent art work image display system which comprises a work image acquisition module, a work image processing module, a work information input module, a work classification module, a control display module and a display adjustment module. Through combination of the work image acquisition module and the image processing module, high-quality work image presentation is ensured, the display effect is enhanced, art works are intelligently classified according to the input work information, accurate data support is provided for intelligent display of images, and the work quality is improved. The control display module effectively calls corresponding art work blocks by receiving selection information of a user and displays the art work blocks according to different modes and sequences, and the display adjustment module further evaluates the effectiveness of the art work blocks according to the residence time of the user before the art work and dynamically adjusts the follow-up display sequence. The intelligent display of the art work image is facilitated, and the display efficiency of the art work is improved.

The utility model relates to a device for preparing LNG (Liquefied Natural Gas) and co-producing LC2H6, LPG (Liquefied Petroleum Gas) and condensate oil by using high calorific value coal gas, which comprises a mixed refrigerant refrigeration cycle, a nitrogen refrigeration cycle and a propane refrigeration cycle, the mixed refrigerant refrigeration cycle provides cold energy for condensation and liquefaction of raw material gas and nitrogen, liquefaction and supercooling of LNG and liquefaction and supercooling of ethane, and the propane refrigeration cycle provides cold energy for condensation and liquefaction of liquefied natural gas and nitrogen. The nitrogen cycle provides cooling capacity for cryogenic separation of raw material gas, the propane refrigeration cycle provides cooling capacity for separation of ethane, meanwhile, a demethanizing tower, a dehydrogenation tower, an LNG rectifying tower, a deethanizing tower and a liquefied petroleum gas tower are arranged, liquid ethane, LPG and condensate oil are co-produced while high-calorific-value coal gas is separated through rectification and LNG is produced, the factory energy consumption is reduced, the benefits are increased, and meanwhile, the production cost is reduced. And the method has the advantages of high adaptability, safety, reliability, wide practicability and the like.

The utility model provides a socket structure which comprises a main support, a socket bottom cover and a socket panel are arranged in the main support, one side of the main support is provided with an auxiliary support, the other side of the main support is provided with a DG panel, the DG panel is provided with a silica gel panel, and the silica gel panel is provided with a waterproof cover. The socket structure provided by the utility model has the advantages of compact structure, good waterproof performance, good hand feeling and the like, the whole structure is simple and compact by ingeniously assembling the components such as the main bracket, the socket bottom cover, the socket panel, the auxiliary bracket, the DG panel and the silica gel panel, and the silica gel panel is arranged, so that the waterproof performance of the socket structure is improved. And therefore, the electronic device provided by the utility model has great economic value and practical value.

The invention discloses a high-temperature wear-resistant self-lubricating boron-doped diamond coating as well as a preparation method and application thereof, and belongs to the technical field of coating materials. The boron-doped diamond coating comprises a Cr base layer, a CrxByCz gradient transition layer and a B-DLC functional layer which are deposited on the surface of a substrate, the thickness of the Cr base layer is 0.15 [mu] m-0. 25 [mu] m, and the mass percent of Cr is 99.5%-99.99%; the thickness of the CrxByCz gradient transition layer is 0.05-0.10 [mu] m, the mass percentage of Cr is greater than 0 and less than or equal to 99.99%, and the mass percentage of B is greater than 0 and less than or equal to 8%; the thickness of the B-DLC functional layer is 0.8 mu m-2. 0mu m, and the mass percent of B is 3%-5%. The boron-doped diamond coating has the characteristics of high hardness, high toughness and low friction at the same time, and can show excellent self-lubrication and wear resistance in a high-temperature atmospheric environment of 400-500 DEG C.

The utility model relates to a non-contact linkage small flap door in the technical field of construction hoists, which comprises a door pocket, the side end of the door pocket is provided with an upper discharge door and a lower discharge door, and the upper end of the lower discharge door is fixedly connected with a hanging plate; during feeding, the trigger head is triggered, the trigger head overcomes torsion of the torsion spring, rotates downwards by 80 degrees and pushes the lower discharging door to move downwards at the same time, so that the small turning plate door is opened, when the upper discharging door and the lower discharging door are closed, the hanging plate moves upwards and is separated from the trigger head, the small turning plate door is turned upwards by 80 degrees, and the upper discharging door and the lower discharging door are closed. Therefore, direct contact between the small flap door and the upper discharging door and between the small flap door and the lower discharging door is avoided, abrasion is reduced, collision impact is reduced, comfort, safety and stability of the elevator are improved, practicability is wide, and by means of the structures such as the tension sensor and the alarm bell which are arranged on the small flap door, the small flap door can be prevented from falling off when the small flap door runs. And personnel are warned to keep a safe distance from the device, so that safety accidents are reduced.

The utility model discloses an elastic piece type tableware universal buckle which comprises a buckle body, a spoon and fork containing groove is formed in the middle of the buckle body, chopstick containing grooves are formed in the left side and the right side of the buckle body respectively, first elastic pieces are arranged on the left inner side and the right inner side of the spoon and fork containing groove respectively, second elastic pieces are arranged on the side walls of the chopstick containing grooves respectively, and the first elastic pieces and the second elastic pieces are arranged on the buckle body. The buckle body is an elastic buckle body, and friction protruding points are arranged on the left outer side and the right outer side of the buckle body. The flexible clamping device is simple in structure, convenient to use, low in cost, easy to produce, capable of achieving the clamping, silence and shaking-free effects of tableware of different sizes, capable of achieving the flexible clamping effect through the elasticity of materials, wide in practicability, compatible with tableware of different specifications, capable of saving space, convenient to take and place spoons, forks and chopsticks and good in consumer experience.

The invention discloses bacillus subtilis K6 which is preserved in the China Center for Type Culture Collection, and the preservation number of the bacillus subtilis K6 is CCTCC (China Center for Type Culture Collection) NO: 20231096. The invention further discloses application of the bacillus subtilis K6 in detoxification of the corn germ meal, the bacillus subtilis K6 is used for fermenting and detoxifying polluted corn germ meal, the degradation rate of zearalenone in the corn germ meal reaches 95% or above, the degradation rate of aspergillus flavus B1 in the corn germ meal reaches 90% or above, toxic substances can be effectively degraded, the detoxification activity is high, and the bacillus subtilis K6 can be applied to detoxification of the corn germ meal. And the method has good tolerance to high temperature and low pH, has stable detoxification capability, and can remove recessive zearalenone toxin contained in the cake meal at the same time. The utilization value of the corn germ meal can be improved, the nutrient components of the corn germ meal can be improved, and a good technical foundation is laid for deep processing of the corn germ meal.

The invention discloses a capacitor lifting piece robot cooperative welding system and method. The system comprises an automatic box shell carrying robot, an automatic lifting piece welding device, an automatic box shell positioning and overturning device and an automatic lifting piece feeding device. The automatic box shell carrying robot is used for carrying capacitor box shells to the automatic box shell positioning and overturning device from the box shell feeding position. The automatic lifting piece feeding device is used for clamping lifting pieces, carrying the lifting pieces to the welding position and pressing the lifting pieces and the capacitor box shell. The lifting piece automatic welding device is used for welding the lifting piece and the capacitor box shell; and the automatic box shell positioning and overturning device is used for clamping, positioning and welding the capacitor box shell and overturning the capacitor box shell of which one side is welded for welding the other side.

The embodiment of the invention provides an optical test method and device for identifying fly-eye lens defects and a medium. The optical test method for identifying fly's-eye lens defects comprises the following steps: enabling parallel light to pass through a fly's-eye lens to be tested and then to be projected to a lens group; focusing the light emitted by the fly's-eye lens through the lens group, so that the light forms a light spot of the fly's-eye lens on a preset imaging surface; comparing the light spot of the fly-eye lens with a standard light spot; and according to a comparison result, identifying whether the fly's-eye lens has defects or not.

The utility model discloses a grinding forming device for a grinding wheel, which relates to the technical field of grinding wheel processing, and comprises a processing platform, a grinding device is arranged on the processing platform, the grinding device is connected with a three-dimensional driving mechanism, and the three-dimensional driving mechanism drives the grinding device to move in the X / Y / Z axis direction of the processing platform. The grinding machine comprises a grinding device and further comprises a grinding wheel body clamping and overturning mechanism arranged on the side portion of the grinding device, the grinding wheel body clamping and overturning mechanism comprises two grinding wheel clamping assemblies which are oppositely arranged, and the two grinding wheel clamping assemblies are respectively connected with a rotating mechanism. And the grinding wheel body is driven to turn over, so that the grinding convenience of the grinding wheel is greatly improved.

The invention provides surface modified rare earth doped cesium-tungsten bronze and application thereof in preparation of multicolor light absorption fibers, the structural formula of the surface modified rare earth doped cesium-tungsten bronze is LaxCsyWO3 (at) CMC, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 3x + y < lt >; and 0.33. By adjusting the doping ratio of the double metals in the LaxCsyWO3-coated CMC, the color change from green, blue, dark blue to purple can be realized at the fiber raw material end, and the requirements of consumers on personalized and fashionable products are met. The characteristic breaks through the limitation of the traditional tungsten bronze fiber in color, and provides wider application possibility.

The utility model provides an oyster mushroom culture fungus bag, which comprises a fungus bag main body and a water supplementing water tank, mushroom outlet holes are arranged on the fungus bag main body, the fungus bag main body comprises an outer bag body and an inner bag body, the inner bag body is filled with culture materials, a water accumulating cavity is arranged below the outer bag body, the water accumulating cavity is arranged below the inner bag body, and the water supplementing water tank is arranged below the outer bag body. The water supplementing water tank is arranged above the fungus bag body, a detachable top cover is installed on the water supplementing water tank, the top cover is matched with the water supplementing water tank in a shielding mode, the water supplementing water tank is communicated with the plastic hose through a transverse pipe, a water supplementing pipe is arranged in the inner bag body, the upper end of the water supplementing pipe is communicated with the plastic hose, and a water dripping hole is formed in the bottom of the inner bag body. A drainage pipe is arranged at the lower end of the right side of the outer bag body and communicates with the water accumulation cavity, and small water outlet holes are evenly formed in the pipe wall of the water supplementing pipe. Excess water at the bottom of the fungus bag can be conveniently discharged, water accumulation in the bag is avoided, meanwhile, the top cover is matched with the water replenishing tank in a shielding mode, water pollution is avoided, and application and popularization are facilitated.

The gas lift reverse circulation drilling machine power head hollow shaft comprises a shaft body, a first cylindrical surface and a third cylindrical surface are arranged at the two ends of the outer surface of the shaft body, a second cylindrical surface is arranged on the right side of the first cylindrical surface, and a first annular boss is arranged on the right side of the second cylindrical surface; a second annular boss is arranged on the inner surface of the shaft body, an axial through hole is formed in the second annular boss, axial blind holes are formed in the end faces of the two ends of the shaft body, the second annular boss is arranged on the shaft body, the axial through hole is machined in the second annular boss, and a slag discharging pipe is arranged in the axial through hole. Functional requirements of rotary driving of the drilling machine, discharge of slag-carrying slurry, input of compressed air and the like are met.

The invention relates to the technical field of photoelectrochemical sensors, in particular to a photoelectrochemical sensor for gentamicin detection. The preparation method of the photoelectrochemical sensor for gentamicin detection comprises the following steps: performing first hydrothermal reaction on copper salt, Bi2S3 and 5, 10, 15, 20-tetra (4-pyridine) porphyrin, and then centrifuging, washing and drying to obtain a Bi2S3 coated Cu-TPyP-MOF heterojunction; the photoelectrochemical sensor is obtained by coating an electrode with a heterojunction and then adsorbing an antibody. An n-n type heterojunction is prepared by taking TPyP as a building block network unit, copper salt as a metal node and Bi2S3 as a template, so that the separation of photo-induced electrons and holes can be promoted, the light current response capability is improved, and the constructed sensor has low detection limit (0.041 fg / mL), wide detection range, high selectivity, good reproducibility and good stability.

The utility model belongs to the technical field of building doors and windows, and particularly relates to a solid wood window lower frame outer side protection structure which comprises a waterproof plate and a clamping piece, the clamping piece is fixedly installed on the upper surface of the outer side of a solid wood window lower frame, the waterproof plate is installed on the clamping piece in a clamped mode, and a gap between the waterproof plate and glass is filled with glass cement. The waterproof plate is made of an aluminum alloy material, and the clamping piece is made of a nylon material. The protection structure for the outer side of the lower frame of the solid wood window has the advantages of being ingenious in design and easy to install, and has a good waterproof effect on the lower frame of the solid wood window, so that the lower frame of the solid wood window on the outer side is effectively protected, the waterproof performance of the solid wood window is improved, and the protection structure has great economic value and practical value.

The utility model provides a kind of corrosion -resistant spiral steel pipe, the utility model includes spiral inner tube body and seamless outer tube body, and interlayer space is formed between spiral inner tube body and seamless outer tube body, and interlayer space is filled with heat preservation filling layer, the outer surface of spiral inner tube body and the inner surface of seamless outer tube body are equipped with corrosion -resistant coating, and the both ends of spiral inner tube body and seamless outer tube body are respectively equipped with first connecting frame and second connecting frame, the edge of first connecting frame is equipped with insert block one, the edge of second connecting frame is equipped with the slot compatible with insert block one, the edge of second connecting frame is equipped with insert block two, the edge of first connecting frame is equipped with the slot compatible with insert block two, and the opening is formed between first connecting frame and second connecting frame, and reinforcing strip is inserted in the opening.The utility model can improve environmental adaptability by double corrosion -resistant coating, optimize the sealing property of connecting structure, enhance the synergistic effect of reinforcing strip and heat preservation layer, to prolong service life and ensure operating stability.