8results about How to "Avoid performance damage" patented technology

The invention relates to a closed hydrogen-oxygen fuel cell system and a control method thereof. The closed hydrogen-oxygen fuel cell system comprises a hydrogen-oxygen fuel cell stack, an oxygen gas path, a hydrogen gas path and a nitrogen gas path, the oxygen gas path comprises an oxygen ejector, an oxygen water segregator and an oxygen water storage tank; an oxygen circulating electromagnetic valve is arranged between the oxygen ejector and the oxygen water segregator; the oxygen water segregator is connected with the oxygen water storage tank to form a drainage pipeline; the oxygen ejector and the oxygen water knockout drum are respectively connected with an inlet and an outlet of the hydrogen-oxygen fuel cell stack, so that a circulating gas path is formed among the oxygen ejector, the oxygen water knockout drum and the hydrogen-oxygen fuel cell stack; a hydrogen gas path is similar; the nitrogen gas circuit comprises a nitrogen medium-pressure electromagnetic valve and a nitrogen medium-pressure sensor, and the nitrogen medium-pressure electromagnetic valve is connected with an inlet of the oxygen proportional valve and an inlet of the hydrogen proportional valve through nitrogen branches. Compared with the prior art, the closed operation and effective drainage of the hydrogen-oxygen fuel cell system are realized, and the damage to the fuel cell system caused by difficult drainage is avoided.

This invention relates to the field of printing coating preparation technology, and discloses a printable gold coating composition based on resin gold salt. The preparation method includes the following steps: turpentine oil and sulfur powder are stirred and mixed, refluxed at 110-130℃ for 2-4 hours, and after the reaction, the mixture is cooled and filtered to obtain sulfurized balsam, which is stored in the dark for later use; the sulfurized balsam is reacted with chloroauric acid solution to prepare sulfurized balsam gold; a composite resin acid salt additive and a portion of the solvent are ultrasonically premixed, and then the sulfurized balsam gold, a high-molecular organic carrier, and the remaining solvent are added sequentially, stirred, and degassed and aged using a planetary gravity mixer to obtain a printable gold coating composition based on resin gold salt. The obtained gold coating composition possesses good printability, conductivity, surface smoothness, and decorative properties, and is suitable for various coating methods such as screen printing and pad printing, forming a thin and continuous conductive gold film, meeting the industrial preparation requirements of ceramic-based sensor electrodes.

The invention discloses a wireless charging transponder and a charging device thereof, the wireless charging transponder and the wireless charging device are included, and the wireless charging transponder comprises a transponder body, a receiving unit installed in the transponder body and a rechargeable battery installed in the transponder; the receiving unit comprises a receiving coil assembly and a binding post of which the two ends are electrically connected with the receiving coil assembly and the power management module respectively; the wireless charging device comprises a charging cabinet, a plurality of charging grooves fixedly arranged in the charging cabinet, transmitting units fixedly arranged at the bottoms of the charging grooves, and a power adapter electrically connected with the transmitting units, wherein the top ends of the charging grooves are communicated with the outside of the charging cabinet. The transponder capable of performing wireless charging and the charging device capable of being matched with the transponder for use are provided, the situation that the transponder needs to be disassembled and assembled when a battery is replaced every time is avoided, the risk that the transponder is damaged in the disassembling and assembling process is avoided, and the transponder is suitable for positioning work of seabed nodes.

The invention discloses a composite material double-lug rotating seat integrated laying forming mold, and belongs to the technical field of composite material laying forming. The forming die solves the problem that an existing forming die cannot achieve integral forming of the double-lug rotating seat made of the composite material. The bottom plate positioning assembly comprises a center shaft core mold and a bottom plate, the center shaft core mold is connected to the center position of the bottom plate, the bottom plate is provided with a positioning spigot and makes contact with the bottom of the side face of the center shaft core mold, and the side vertical assembly and the arc pressing block are positioned through matching of the positioning spigot. The side vertical assembly and the arc pressing block define a rectangle along with the shape of the positioning spigot, the pressurizing outer frame is movably connected to the bottom plate and located on the outer side of the rectangle defined by the side vertical assembly and the arc pressing block, and the spherical positioning upper cover is connected to the upper end of the side vertical assembly and the upper end of the arc pressing block. The composite material double-lug rotating base can be integrally and completely laid and formed, fiber prepreg is laid on the mold in a shape-following mode, and continuity of fibers is guaranteed.

The utility model relates to a medical auxiliary instrument, in particular to an ankle joint stress position auxiliary device which comprises a placing plate. A plurality of groups of insertion holes are formed in the top end of the placement plate; the insertion holes penetrate through the surface of the placement plate; a plurality of groups of inserting rods are arranged at the top end of the placing plate; according to the design, a patient can autonomously maintain the body position without assistance of assistants, meanwhile, the ankle joint can be limited and preliminarily pressurized by inserting the inserting rod into the inserting hole, then the ankle joint is further manually and controllably pressurized through the air bag till the body position is satisfied, the first air bag is of a non-rigid structure capable of finely adjusting and controlling pressure, the pain feeling of the patient is relieved, and the patient is more comfortable. According to the utility model, local pressure on the lateral malleolus and the front side of the tibia is relieved, so that iatrogenic injury is avoided, meanwhile, the placement plate is made of an acrylic material, and by utilizing the characteristic of high X-ray transmittance of the placement plate, the conditions of ankle joint instability and ligament injury can be evaluated more quickly, and the diagnosis efficiency is improved.

The present invention discloses a hand root canal file clamping handle, which specifically relates to the field of medical devices, including a handle body and a clamp for clamping and fixing the hand root canal file, wherein the clamp is fixedly arranged at the top of the handle body, and the clamp includes a chuck body, a lower clamp block, an upper clamp block, an adjustment pad and a fastening screw; the chuck body is fixedly arranged at the top of the handle body, and an upper clamp block fixing groove is provided on the top end surface of the chuck body, and the upper clamp block is movably installed inside the upper clamp block fixing groove; a curved hook body is integrally arranged at the top of the upper clamp block, and an upper fixing groove of the root canal file is provided on one side of the curved hook body for fixing the hand root canal file. The present invention can conveniently explore, dredge and clean the deep posterior root canal without slipping or blocking the line of sight, the whole device has a simple structure, is relatively convenient to install and disassemble, has high practicality, can conveniently assist doctors to complete root canal treatment, effectively reduce the labor intensity of doctors, and prevent iatrogenic injuries.

The present application relates to the technical field of medical polymer materials, in particular to a medical adhesive tape based on low-sensitization acrylate medical adhesive and a preparation method thereof, the medical adhesive tape is composed of 65-78% low-sensitization acrylate adhesive main body, 15-22% medical-grade breathable non-woven fabric substrate, 5-8% medical silicone release layer, 1.5-3% low-sensitization soothing auxiliary agent, 2-4% hydrogenated rosin tackifying resin, 0.3-0.8% multifunctional crosslinking agent and 0.1-0.5% low-temperature initiator by weight percentage; the adhesive main body is a ternary copolymer system, and the copolymer glass transition temperature is accurately controlled to be 243-253 K. The medical adhesive tape is prepared by low-temperature solution polymerization, low-sensitization modification, high-pressure micro-perforation coating and three-stage curing and sterilization process, has a peel strength of 1.0-2.5 N / 25 mm, a holding time of ≥24 h and a skin sensitization reaction grade of ≤ grade I, and has low sensitization, stable adhesion and high breathability, and can meet the use requirements of various medical fixation scenes in clinical applications.

The utility model belongs to the technical field of knobs, and discloses a magnetic control knob, which comprises a base, fixed magnets, a base, an aluminum shell, an iron ring, an induction magnet, a connecting piece and a sensor, the base is provided with a fixing groove for placing the fixed magnets, the polarities of the adjacent fixed magnets are opposite, the base is positioned above the base and is provided with a penetrating column, and a limiting part is arranged in the penetrating column. The iron ring is arranged in the penetrating column and cannot fall off under the action of the limiting part, the induction magnet is arranged below the iron ring and attached to the iron ring, the connecting piece penetrates through the induction magnet and the iron ring from bottom to top and then is connected with the aluminum shell, a gap is formed between the connecting piece and the iron ring and is fixed to the induction magnet, a gap is reserved between the aluminum shell and the iron ring, and the induction magnet moves in the penetrating column. The magnetic control knob uses a scheme of detecting magnetic field change to adjust functions of household appliances, the performance and the service life of the magnetic control knob are not affected after water enters the magnetic control knob, impact sound of the aluminum shell and the iron ring is used as feedback of function confirmation, and the magnetic control knob is prevented from being pressed repeatedly or pressed vigorously.