35results about How to "Long-term maintenance" patented technology

The invention relates to an embedded micro streamline axial flow blood pump, which can be used for assisting blood circulation of failed heart. The blood pump comprises a pump body arranged in a sleeve body and a driving device arranged outside the pump body, wherein the pump body comprises the sleeve body, a front guide vane, a rotor and a back guide vane; the hubs of the front guide vane, a rotor and the back guide vane are designed integrally in an integral streamline form; and the front half part of the rotor is provided with an inductive blade. The blood pump can reduce the on-way pressure loss of the blood in the flow channel of the blood pump, improve efficiency and reduce hemolysis; and can promote the circumferential speed of the blood after entering into a rotor area due to the inductive blade arranged on the front half part of the rotor, and avoids the occurrence of vacuole phenomenon.

The invention discloses a control method, a system and a device of a wind driven generator. The method is that an analog to digital conversion module obtains various control signals and outputs the control signals to a main controller after the analog to digital conversion; the main controller respectively sends the control signals to a corresponding subordinate controller; the subordinate controller controls the wind driven generator according to the corresponding control signals of the control signals. The control system comprises the analog to digital conversion module which is used for obtaining various control signal and outputs the control signals to a main controller after the analog to digital conversion, the main controller which is used for respectively sending the control signals to the corresponding subordinate controller and the subordinate controller which is used for controlling the wind driven generator according to the corresponding control signals; the subordinate controller comprises a variable propeller pitch system controller, an excitation system controller and a display system controller. The method, the system and the device of the invention can lead the control system structure of the wind driven generator to be simple, has the low cost and is beneficial to the development and the long-term maintenance.

The invention discloses a sandwich-structure fiber glass reinforced plastic inner floating plate for an oil storage tank and a manufacturing method of the sandwich-structure fiber glass reinforced plastic inner floating plate. The sandwich-structure fiber glass reinforced plastic inner floating plate comprises a sandwich-structure fiber glass reinforced plastic inner floating plate body. The sandwich-structure fiber glass reinforced plastic inner floating plate body comprises a floating plate and sealing devices surrounding the inner wall of the oil storage tank, and the sealing devices are installed between the floating plate and the inner wall of the oil storage tank. Each sealing device comprises a two-layer stainless steel part and Teflon sealing adhesive tape which are stacked together, wherein the Teflon sealing adhesive tape is tightly attached to the inner wall of the oil storage tank, one end of the two-layer stainless steel part and one end of the Teflon sealing adhesive tapeare downward, and the other end of the two-layer stainless steel part and the other end of the Teflon sealing adhesive tape are connected with an edge baffle through a stainless steel bolt with a stainless steel pressing part. The edge portion of the floating plate is connected with the corresponding sealing devices through the edge baffle surrounding the floating plate. The sandwich-structure fiber glass reinforced plastic inner floating plate for the oil storage tank is simple and unified in structure, low in weight, high in strength and rigidity, low in heat conductivity and good in chemical corrosion resistance, and has broad market prospects.

The invention relates to a self-powered intelligent sensor for a fluid pipeline, which is technically characterized by comprising a computer mainboard, a network connector, a sensor, a power supply unit, an electric generator, a storage battery and a turbine, wherein the computer mainboard is respectively connected with the sensor and the network connector; the electric generator is connected with the turbine arranged in the fluid pipeline and is driven to generate power by the turbine; after carrying out voltage stabilization treatment on the electric energy provided by the electric generator, the power supply unit provides power for the computer mainboard, the network connector and the sensor; the storage battery is connected with the power supply unit so as to provide power for the computer mainboard, the network connector and the sensor; or the computer mainboard, the network connector and the sensor are charged by the electric energy provided by the electric generator under the control of the power supply unit. The self-powered intelligent sensor is reasonable in design, solves the problem that the sensor of the fluid pipeline also can be used under the condition without electric power, and has the characteristics of being powerful in functions, wide in usage, convenient to use, free from maintenance and the like, thus playing an important role in the development of Internet of things.

The invention discloses an OTDR-based optical cable test active alarm method, which is characterized by comprising the following steps of 1) displaying optical cable logic information on a map according to physical optical cable information; 2) establishing a corresponding relation data table of test equipment and optical cable data; 3) testing an optical cable; Fault points can be visually and accurately positioned on a map by using a geographic information system (GIS), and optical cable line maintenance information is recorded through an informatization method, so that maintenance personnelcan conveniently and effectively maintain the optical cable for a long time, a loss function per kilometer of the optical cable is provided, and optical cable lines which possibly have faults are found in advance; operation and maintenance cost of the communication network is reduced, operation and maintenance efficiency is improved, and network communication quality is improved.

The invention relates to hot-melting light-curing optical adhesive for laminating a capacitance-type touch screen. The hot-melting light-curing optical adhesive is prepared from the following components in parts by weight: 50 to 70 parts of main body resin, 10 to 30 parts of auxiliary resin, 10 to 15 parts of tackifier, 1 to 5 parts of light initiator, and 0.5 to 2 parts of antioxidant; the main body resin is vinyl-vinyl acetate copolymeric resin; the auxiliary resin is acrylate modified isoprene rubber resin; the tackifier is a mixture of one or two of the following substances: terpene resinand polybutadiene rubber resin; and the antioxidant is a mixture of one or more of the following substances: beta-(3,5-di-tert-butyl-4-hydroxyphenyl)N-octadecanol propionate, 1,1,3-tri(2-methyl-4-hydroxyl-5-tert-butylphenyl)butane, dilauroyl thiodipropionate and organic phosphite. The adhesive is suitable for laminating a large-sized CTP as well as fully laminating a panel computer, a computer, aliquid crystal display, an one-piece machine, a vehicle-mounted navigator and the like, and can provide a perfect visual effect for the display of the touch screen.

The invention belongs to the technical field of health-care foods, and relates to sweet potato-based nutritious porridge. The sweet potato-based nutritious porridge comprises the following raw materials in parts by weight: 30-50 parts of purple rice, 25-45 parts of sweet potato, 5-10 parts of red bean, 6-10 parts of pearl barley, 4-8 parts of Chinese chestnut, 3-7 parts of yam, 4-6 parts of lily, 5-9 parts of litchi, 3-7 parts of medlar, 2-6 parts of white paeony root, 3-5 parts of clam, 3-7 parts of tendrilleaf solomonseal rhizome, 1-3 parts of tylorrhynchus heterochaeta, 3-5 parts of ginseng fruit, 6-10 parts of honey, 5-9 parts of fig, 3-8 parts of pumpkin and 4-6 parts of cherry. The tortoise jelly is sweet and refreshing, has the effects of invigorating stomach, moistening lung, enriching yin, nourishing kidney, replenishing qi and strengthening spleen, can be eaten for a long time and can effectively adjust micro-ecological balance and health of a human body.

The invention provides a woven zipper teeth chain belt. A warp knitting zipper belt (11) of the woven zipper teeth chain belt comprises a belt main body part (11a) and a chain teeth mounting part (11b) which is formed on a first side edge of the belt main body part. The chain teeth mounting part is provided with basal chain-shaped weaving yarn (27) and a third weft inserted yarn (23), wherein the third weft inserted yarn (23) runs in a zigzag shape in a range of more than three loops of stitch wale which includes the stitch wale arranged on the chain teeth mounting part, a part of the basal chain-shaped weaving yarn is used as chain-shaped weaving yarn for the fixation (27a) of a chain teeth line, the chain-shaped weaving yarn for fixation is used in a second stitch wale (W2) which is adjacent to a first stitch wale (W1) and a third stitch wale (W3) which is adjacent to the second stitch wale (W2), a forth weft inserted yarn (24) runs in a zigzag shape on the first stitch wale and the second stitch wale and is interacted with the third weft inserted yarn between loop rows, and only the third weft inserted yarn (23) runs between the second stitch wale and the third stitch wale.

The invention provides a photobiological hydrogen production system and a preparation method and application thereof. The preparation method comprises the following steps of: S1, mixing glucose, glucose oxidase, catalase and an inorganic green alga flocculating agent, so that gluconic acid generated by enzyme cascade reaction of glucose can spontaneously react with the inorganic green alga flocculating agent to form chemical-enzyme cascade reaction; and S2, introducing the chemical-enzyme cascade reaction into a green alga illumination culture system to flocculate the green alga to form greenalga aggregates, and keeping the green alga aggregates in an anaerobic and near-neutral pH environment for a long time to obtain a photobiological hydrogen production system, and monitoring the contents of oxygen and hydrogen in the photobiological hydrogen production system through a gas chromatograph. According to the invention, a simple, cheap, long-term and efficient photobiological hydrogen production system is provided, so that the problems that the anaerobic environment is difficult to maintain for a long time and green algae are easy to damage are solved, and the development of the application of photobiological hydrogen production in large-scale commercial hydrogen preparation is expected to be promoted.

The invention discloses a breed conservation method of a dark purple pepper germplasm resource, and belongs to the technical field of plant breeding. The method comprises the steps that during a seal leaf period, a seeded and emerged dark purple pepper material is weeded, and plants with non-purple sead leaves in a colony are removed; during a main leaf period, plants with pallescent purple main leaves in the colony are removed, and plants with dark purple leaves are reserved for seed reserving and breeding; before blooming, each single plant is covered with a nylon fly net bag, so that selfing is firm and seeds are harvested; and then the steps are circulated year after year. The germplasm characteristics can be kept constant continuously, and the method can be utilized sustainably.

The invention provides a welding method for reducing the site-welding stress deformation of a thick-walled steel structure, and relates to a welding method. The problems that for an existing steel structure, adjustment of welding residual strain to a welding process is passive, cumbersome and difficult, and the structure of welding joints is poor in stability and anti-fatigue performance are solved. The method comprises the steps that multiple inlaid internal webs are arranged at welding grooves of welding groove at intervals in the length direction of a welding seam, wherein a skeleton systemstructure is jointly formed by welding groove walls of base materials and the inlaid internal webs; welding of the internal webs is conducted, wherein back gouging welding is adopted to ensure complete fusion between the internal webs and the base materials of the welding groove walls of the butt joints; and after the skeleton system structure of the butt joints is welded and formed, filling welding is conducted on a partition space formed by the welding groove walls of the base materials and the multiple inlaid internal webs in an enclosing manner, and cover surface welding is conducted in the longitudinal welding direction of the welding seam. The welding method is used for reducing the site-welding stress deformation of the thick-walled steel structure.

The invention discloses a clarithromycin capsule and a preparation method thereof. The clarithromycin capsule comprises following internal components: clarithromycin, lauryl sodium sulfate serving as a cosolvent, polyethylene glycol 6000 serving as an adhesive and a filling agent, and magnesium stearate serving as a flow aid, which are under in the weight ratio of 250: 0.75: 20: 0.5. The preparation method comprises the following steps of: taking clarithromycin as the raw material based on the dose as indicated in a formula; uniformly mixing with polyethylene glycol 6000 and lauryl sodium sulfate with the dose as indicated in the formula; fusing and pelleting; uniformly mixing the particles with magnesium stearate; filling into a hollow capsule; removing residual powder on a housing of the capsule; and packing to obtain the finished product of clarithromycin capsule.

The invention relates to the field of mineral exploration drilling sampling equipment, in particular to a rotational flow sampler with a replaceable wear-resistant lining, which comprises a cylinder body, a slag inlet channel, a cone, a slag outlet, an exhaust pipe and a ceramic splicing piece, wherein the slag inlet channel is communicated with the interior of the cylinder body and used for introducing a rock sample carrying airflow into the cylinder body, and a slag inlet is formed in the end, away from the cylinder body, of the slag inlet channel; the cone is communicated with the interiorof the cylinder body, is arranged at the bottom of the cylinder body and is used for transporting the solid rock sample subjected to solid-gas separation; the slag outlet is formed in one end, far away from the cylinder body, of the cone and is used for discharging the solid rock sample subjected to solid-gas separation; the exhaust pipe is communicated with the interior of the cylinder body, is arranged at the top of the cylinder body and is used for conveying gas subjected to solid-gas separation; the ceramic splicing piece is attached to the inner walls of the cylinder body and the slag inlet channel in a covering mode and formed by splicing ceramic pieces one by one, and the inner walls of the ceramic piece cylinder body and the slag inlet channel are detachably connected. The wear-resisting replaceable low-adhesion lining wall is used for achieving the effects that the inner cylinder wall of the rotational flow sampler is not damaged forever, and a rock sample is not likely to adhere to the inner cylinder wall of the rotational flow sampler.

The invention relates to a complex back type T-shirt for preventing and treating anaphylactic rhinitis. The complex back type T-shirt for preventing and treating anaphylactic rhinitis is characterized in that the T-shirt is made from one fabric, the back of the T-shirt is made by adopting two or three layers of the fabric from top to bottom, the heat preservation effect of the back of a human body is two or three times of that of the front chest, and the acceleration of the blood circulation of the skin of the back and the smoothing of channels and collaterals are achieved by the heat preservation of the back. The prevention and the treatment of anaphylactic reactions caused by outside temperature changes to the nasal cavity of the human body are achieved.

The invention relates to the field of compound fertilizer production, and discloses a production technology of a slurry type compound fertilizer. In the preparation process, an anti-blocking agent in added to effectively solve the crystallization and hardening problems of the slurry type compound fertilizer; the preparation of the compound fertilizer is not limited by the types of the nitrogen fertilizers, but can be precisely matched according to the plant nutritional requirement; the prepared slurry type compound fertilizer can be preserved for at least four months above at normal temperature, is not required to be stirred regularly, and further cannot generate the crystallization or hardening phenomenon; when being applied as a leaf fertilizer, the anti-blocking agent can be dissolved in water, so that the slurry type compound fertilizer cannot block a sprayer; after application of the fertilizer, the anti-blocking agent can be quickly decomposed, so as not to generate environment pollution; in the slurry grinding process, the ingredients are simply added, so that the production technology is simple, convenient and feasible in processing process, capable of saving labor and effort, and low in cost.

The invention discloses a device for treating sewage by using dielectric barrier discharge plasma. The device comprises a reaction table, a plasma reaction vessel and a liquid storage device, wherein the reaction table comprises an insulating board, a conductive base, support rods, a grounding electrode and two high voltage electrodes which are respectively connected with a positive pole and a negative pole of a high-voltage and high-frequency power supply; the insulating board and the conductive base are arranged up and down in a corresponding way by means of the support rods; the two high voltage electrodes which are respectively connected with the positive pole and the negative pole of the high-voltage and high-frequency power supply are respectively and fixedly arranged on the insulating board and the conductive base in an opposite way; the grounding electrode is arranged on the conductive base; the plasma reaction vessel is arranged between the two high voltage electrodes. The whole device is high in practicality, simple in equipment, safe in operation and convenient to operate, and has the advantages of being wide in treatment scope, good in effects, free from secondary pollution, and the like. The automatic control of the device is easy to realize, so that the device can be used for industrial production in future.

The invention discloses a light blocking prevention type solar lawn lamp. The solar lawn lamp comprises a supporting column, wherein a light facing plate is arranged at the upper end of the supportingcolumn, a solar cell panel is installed at the upper end of the light facing plate, a ventilation groove is formed in the side wall of the light facing plate, a wind wheel is rotatably connected to the inner bottom of the ventilation groove, a scraping plate is slidably connected to the upper end of the light facing plate, the scraping plate is elastically connected to the side wall of a wind wheel rotating shaft through a spring, pull-back plates are fixedly connected to the two opposite side walls of the scraping plate correspondingly, and an annular groove is formed in the upper end of thelight facing plate. By arranging the wind wheel, the spring, the scraping plate and other components, the wind wheel can be pushed to rotate when wind blows, the scraping plate is pushed to the surface of the solar cell panel through centrifugal force, and therefore, grass leaves and other sundries falling on the surface of the solar cell panel are scraped together; and when the wind stops, the spring pulls the scraping plate to move back, the pull-back plates can push grass leaves and other sundries into the annular groove, and therefore, the grass leaves and other sundries can be effectively prevented from shielding the solar cell panel.

The invention relates to a medical metal material with a modified film with photo-thermal characteristics on the surface and a preparation method and application of the medical metal material. And the modified film is a nickel-titanium oxide TimNinO2m + n embedded with nano nickel. The nano nickel is a simple substance and is spherical, and the radius of the nano nickel is 2-20 nm; and the density of the nickel nanoparticles is 5-30 per square micron. The nickel-titanium oxide is of a sheet structure, the length and the width of a sheet layer are 0.5-2 microns, and the thickness of the sheet layer is 10-40 nm. In the preparation method, the nickel-titanium layered double hydroxide is firstly generated, and then the nickel-titanium oxide thin film inlaid with the elemental nickel is obtained through heating reduction. The cost of the constructed nano nickel is obviously reduced, and meanwhile the problems that non-noble metal nano metal particles are prone to being oxidized, and the photo-thermal effect cannot be kept for a long time are effectively solved; and the material also has good osteogenesis performance, improves the biological activity of medical metal, and is suitable for surface modification of hard tissue implantation instruments.

The invention provides a data management method and device, relates to the technical field of databases, and mainly solves the technical problems of reasonable classification and convenient maintenance of data of a cloud platform. The method comprises the steps of determining feature information of data, wherein the feature information is divided into two types; taking the feature information as adirectory entry of the data in the cloud, the directory entry being a two-level directory, and each level of directory corresponding to one kind of feature information; taking the feature informationas position information of the data in a big data processing platform; and according to the directory entry and the position information, associatively storing the data in the cloud and the big dataprocessing platform. Therefore, the data can be quickly retrieved from the cloud, the cost of the server is saved, and the loss is reduced; different data are cleaned and classified, new data can be quickly accessed, long-term maintenance can be performed, data backup can be clearly performed, most requirements can be met, and the maintenance cost is greatly reduced.