71results about How to "Avoid resistance" patented technology

The application belongs to the technical field of oil and gas exploitation, and relates to a kind of amphiphobic nano oil displacement agent and a preparation method thereof, which takes nano silicon dioxide as the core, is modified by amino silane coupling agent and hydrophobic silane coupling agent in sequence respectively, and forms dumbbell-shaped prepolymer after mixing; then is grafted by perfluoroalkyl silane coupling agent to give it hydrophobic and oleophobic properties; finally is crosslinked and solidified by epoxy silane coupling agent to form a three-dimensional network structure. The obtained oil displacement agent has excellent amphiphobicity, high temperature and high salt stability and adsorption resistance, can effectively enter the low permeability oil reservoir pore throat, and significantly improves the oil recovery. The preparation method has simple process and mild conditions, is suitable for large-scale production, and has good application prospect in improving the efficiency of oil and gas exploitation.

This utility model discloses a system for combined denitrification under full-load conditions in a circulating fluidized bed boiler, comprising a wide-temperature-range SNCR denitrification module and a flue gas circulation module. The injectors in the wide-temperature-range SNCR denitrification module are arranged in the inlet flue of the high-temperature separator, the inlet flue of the high-temperature superheater, or the boiler furnace. The flue gas circulation module includes a flue gas circulation header and flue gas circulation branch pipes arranged along the flue gas flow direction. The flue gas circulation header connects to the flue gas circulation branch pipes, which are connected to the air preheater via a primary air fan. The inlet of the flue gas circulation header connects to the outlet of the induced draft fan. This utility model extends the lower limit of the conventional 800~1050℃ temperature window to 650℃. It uses ethanol as a low-temperature additive, resulting in relatively low denitrification costs and convenient ethanol addition and removal. Compared with existing SCR denitrification technology, the system is simpler and more economical. It does not require boiler modification, nor does it require additional denitrification reactors and catalysts, making the system relatively simple and facilitating switching between low-temperature denitrification mode and conventional denitrification mode.

The utility model provides a polishing derusting device for a pipeline bell and spigot, which comprises a mounting bracket fixedly mounted on a working platform, a rotating plate rotatably connected to the top of the mounting bracket through a rotating shaft, a driving component arranged on the mounting bracket and used for driving the rotating shaft to rotate, and two groups of first telescopic mechanisms oppositely and fixedly mounted on two sides of the rotating plate, and polishing equipment capable of making contact with the end face, to be polished and derusted, of the pipeline bell and spigot end is fixedly mounted at the ends, away from the rotating plate, of the two first telescopic mechanisms. According to the polishing and derusting device for the pipeline bell and spigot, polishing and derusting operation can be conducted when a pipeline is hoisted on the operation platform, manual polishing of the pipeline bell and spigot is not needed, the labor cost and time are saved, the polishing and derusting efficiency of the pipeline bell and spigot is improved, and the polishing and derusting efficiency of the pipeline bell and spigot is improved. And meanwhile, the pipeline bell and spigot joints with different pipe diameters can be polished and derusted, so that the universality of the device is improved.

The present application relates to air purifier processing technical field, and disclose a kind of air purifier filter panel production processing device and its process, including rack, the lower side of the rack is equipped with conveying belt, and the outside of the rack is equipped with polishing assembly, the conveying belt is equipped with processing fixture, and the processing fixture includes base, the base is fixedly connected with the conveying belt.This technical scheme is by being equipped with the support transmission assembly's bearing seat of lower side and the transmission rack used in cooperation with it, under the driving of transmission rack, support seat, bearing seat rotates, support seat is adjusted in the process of rotation, by first transmission rod, second transmission rod can be linked with the lifting block adjusting assembly in the base interior, transmission block, to further make the inclination of bearing seat and workpiece change, in this technical scheme, workpiece is adjusted without manual, the purpose of processing the inclined top of workpiece can be achieved, greatly improve processing efficiency.

The utility model discloses a self-proportioning lightweight concrete prevents residual and mixing device, including base, the top of base is provided with the sliding plate, one side of sliding plate is provided with the pivot, and one side of pivot is connected with the stirring bin, one side of stirring bin is provided with the scraper mechanism, and the other side of stirring bin is provided with the feed port, one side of feed port is provided with the dust cover, one side of dust cover is provided with the glue spraying mechanism, and the bottom of feed plate is connected with the reset piston, one side of reset piston is provided with the check valve, one side of check valve is provided with the foamed plastic warehouse, and the other side of check valve is connected with the stirring bin, and the cement paste is pushed reset piston through the oblique feed plate, and the resistance of buffer spring is overcome, and the vertical displacement is along the limiting groove, thereby opens the check valve, makes the foamed plastic enter the stirring bin from the foamed plastic warehouse, and this mechanical type trigger mechanism does not need external sensor or energy, realizes the automatic proportioning of foamed plastic and cement paste.

This application belongs to the field of binding strap technology and discloses a binding strap with adjustable tightness. It includes a base plate, a connecting strap connected to one side of the base plate, and a fixing strap connected to the end of the connecting strap away from the base plate. Several vertical teeth are spaced apart on one side of the fixing strap. The tooth surface of the teeth near the connecting strap is perpendicular to the surface of the fixing strap, while the other side of the strap is inclined. Two vertical plates are spaced apart on the base plate, and two vertically spaced rotating rollers are rotatably arranged between the two plates. One of the rotating rollers has several first tooth grooves spaced apart circumferentially to engage with the vertical teeth. A rotating handle is provided on one of the rotating rollers, and a clamping assembly is also provided on the base plate. The fixing strap is inserted between the two rotating rollers, with the vertical teeth on the fixing strap engaging with the first tooth grooves, while the surface of the fixing strap away from the vertical teeth contacts the roller surface of the other rotating roller. Rotating the handle causes the rotating roller connected to the handle to rotate accordingly, stably pulling the fixing strap through the meshing action of the vertical teeth and the first tooth grooves.

The utility model discloses a railway single-group turnout remote control switch control system, and relates to the field of railways. The railway single-group turnout remote control switch control system comprises an electric switch machine and a turnout unit, the turnout unit is arranged on one side of the electric switch machine, the turnout unit comprises two turnout switch rails, an actuating rod and a sliding seat assembly, the turnout switch rails are symmetrically arranged, the actuating rod is arranged below the turnout switch rails, and the sliding seat assembly is arranged below the turnout switch rails. The actuating rod is used for driving the turnout switch rail to move, and the sliding seat assembly is arranged below the turnout switch rail. According to the railway single-group turnout remote control switch control system, the sliding base assembly is arranged, and the bottom end of the turnout switch rail is in rolling connection with the multiple round rollers, so that the turnout switch rail moves more smoothly; the problems that sliding resistance exists and sliding is not easy due to the fact that the turnout switch rail makes direct contact with the sliding plate are solved, the sliding plate and the round rollers can be replaced in time when large abrasion occurs, and smooth movement of the turnout switch rail on the sliding plate is guaranteed.

The high-strength ferrite magnetic steel comprises a magnetic steel body and a storage box used for storing the magnetic steel body, a circular through groove is formed in the center of the bottom of the storage box, an annular frame is fixedly connected to the center of an inner cavity of the storage box, and a first buffer layer is arranged at the bottom of an inner cavity of the annular frame. The magnetic steel body is arranged in an inner cavity of the annular frame and is attached to the top of the first buffer layer, and when the magnetic steel is used, the magnetic steel body is placed in the annular frame, and through the arrangement of the first buffer layer, the second buffer layer, the annular pressing plate, the T-shaped rod, the limiting plate and the first spring, the magnetic steel body can be fixed to the annular frame; the magnetic steel body can be clamped and locked in the vertical direction, so that the condition of friction on the surface of the ferrite magnetic steel is avoided, and the high-strength usability of the ferrite magnetic steel is improved.

This invention discloses an infusion device for bone marrow aspiration, belonging to the field of medical device technology. The invention includes a base, a counterweight, and an infusion assembly. The key features are: the base contains multiple pressure sensing mechanisms, a balancing and stabilizing mechanism, and a protective mechanism. The pressure sensing mechanism includes a pressure groove and a sensing piston, connected to a large air reservoir and a small air reservoir; the balancing and stabilizing mechanism includes a balancing groove, a moving slider, a telescopic spring, a stabilizing plate, and a lifting piston. The lifting piston is connected to the moving slider via a traction line, and the small air reservoir is connected to a limiting cavity via an air inlet pipe; the protective mechanism includes a fixed support, a rotating shaft, a protective cloth, and a reinforcing rope. The large air reservoir is connected to an adjusting cavity, and the adjusting piston is driven by the rotating shaft; the rotating shaft is also connected to a limiting assembly for controlling the extension length of the stabilizing plate. This invention achieves dynamic stabilization, intelligent protection, and coordinated adjustment through pneumatic linkage, effectively preventing needle displacement and ensuring infusion safety.

A mobile device stylus includes a coupling portion couplable to a face of a mobile device, a support portion connected to a portion of the coupling portion, and a contact portion to contact a screen of the mobile device to operate the mobile device, an end of the contact portion connected to the coupling portion, wherein the coupling portion is a ring structure, a non-circular ring structure, or a non-enclosed ring structure.

The application discloses a parallel hole damping-spiral tube inerter underwater damping device and belongs to the technical field of underwater vibration control. The device comprises an upper shell, a lower shell, a damping spring, an open small hole damping and an open fluid inerter. The upper shell and the lower shell are two parts in relative sliding. The damping spring and the open small hole damping are assembled in parallel to form an integral body, which together constitutes an open spring damping. The open spring damping and the open fluid inerter are connected in parallel, and the upper and lower ends of the two are respectively fixed to the upper shell and the lower shell. The open small hole damping and the open fluid inerter are both installed in the upper shell and the lower shell. The application adopts a parallel topology structure of inerter, damping and spring. The double spiral pipes and the symmetrical piston rods realize the fluid inerter effect in two directions. The small holes on the damping piston realize the speed-dependent throttling damping. The device has the characteristics of wide frequency vibration isolation, strong static load capacity, symmetrical positive and negative characteristics and deep water environment.

A front wheel is connected with a rear wheel through a bicycle beam, a steering column connected with the bicycle beam is arranged below a handlebar, a steering arm is arranged at the tail end of the steering column, the bicycle beam is provided with a steering column connected with the rear wheel, and the steering arm is connected with the steering column above the rear wheel through a steering push-pull cable; a first shock absorber connected with a rear wheel is arranged below the steering column; the saddle is arranged in the middle of the beam; a plurality of circles of end face gears with different diameters are arranged on the front wheel, a cylindrical gear meshed with the end face gears is arranged on the bicycle beam, and the cylindrical gear is connected with the handlebar through a variable-speed push-pull cable. A simple end face gear speed change mechanism is adopted, and the transmission efficiency is high; due to rear steering and front driving, steering is flexible, and the turning radius is small; the saddle is low in gravity center, small in wind resistance, anti-falling and safe; the speed change range is wide and can be fast or slow; chain deviation resistance caused by different surfaces of the chain disc is avoided; a large-modulus gear is adopted, so that the strength is high and durability is realized; the failure rate is low and maintenance is easy.

This invention provides a zero-discharge system and process for desulfurization wastewater, including a drying tower. The top of the drying tower is equipped with a flue gas distributor and a rotary atomizer, while the bottom side of the drying tower has a flue gas outlet. A cyclone dust collector and a variable frequency booster fan are installed on the connecting flue of the flue gas outlet. The outlet of the variable frequency booster fan is connected to the outlet flue of the power plant's air preheater. This system achieves both efficient contact evaporation of desulfurization wastewater with high-temperature flue gas through the drying tower and, by adding a variable frequency booster fan at the drying tower outlet, eliminates the system's dependence on the air preheater's operating pressure difference. The booster fan actively pressurizes the flue gas, ensuring that the flue gas can overcome system resistance and smoothly enter the air preheater outlet flue. This effectively solves the problem of insufficient air preheater pressure difference causing system malfunction during low-load boiler operation. The booster fan uses variable frequency control, adapting to full-load boiler operation.

The invention provides a condensing device and clothes processing equipment, the condensing device comprises a condensing air duct and a turbulent flow module, and the turbulent flow module is arranged in the condensing air duct and comprises turbulent flow blades and a blade shaft; the turbulent flow blades are in a spiral shape and are arranged on the blade shaft in the mode that the spiral angle can be adjusted. When airflow flows along the condensation air duct from bottom to top, a controllable turbulent flow effect is generated through the turbulent flow blades with the adjustable spiral angles, so that the airflow forms vortex or turbulent flow, and the contact area and the contact time between the airflow and condensate water are remarkably increased; not only is the sufficiency and uniformity of heat exchange enhanced, but also different drying conditions can be adapted by adjusting the spiral angles of the turbulent flow blades, the flow velocity distribution of airflow is optimized, and the condensation efficiency is effectively improved; on the basis of ensuring the condensation efficiency, the system is allowed to maintain equivalent heat exchange performance at a lower drying fan rotating speed, so that the fan energy consumption and the operation noise are reduced.

The present application relates to the technical field of new material package detection equipment, in particular to a paper box bearing detection device, which comprises a floating detection table, a floating cross beam, a pressure receiving execution part and a limiting mechanism. The floating cross beam is connected with the pressure receiving execution part through a cantilever, and a floating force transmission mechanism is arranged between the cantilever and the pressure receiving execution part. The pressure receiving execution part can only slide in the vertical direction under the constraint of the limiting mechanism. The present application uses the floating cross beam to construct a multi-point synchronous pressure applying frame, and removes the displacement constraint of the pressure applying system in the horizontal sliding and rotating dimensions through the floating force transmission mechanism, so that the device can adapt to the local deformation and position drift of the new material paper box in dynamic testing. This structure completely eliminates the lateral shear force and the rigid interference of the mechanism, reduces the interference of the mechanical internal stress on the pressure collection, ensures the accuracy of the vertical load transmission, and can objectively evaluate the bearing limit of the paper box in the simulated logistics environment.

The utility model relates to composite film packing bag technical field, especially is composite film packing bag outlet structure of integrated flow guide nozzle, including packing bag, the top of packing bag is installed with flow guide nozzle, the outer wall fixedly connected with base of flow guide nozzle, the outer wall of flow guide nozzle is connected with the thread cap of screw thread, the outer wall of thread cap is provided with sliding ring, the top of flow guide nozzle is provided with the slot, the inner wall of slot is provided with the clamping groove, the outer wall of thread cap is provided with the rotating cap of sleeve, the inner wall of rotating cap is provided with the sliding slot, the inside of sliding slot is provided with the sliding block, the inner wall top of rotating cap is fixedly connected with spring, the bottom of spring is fixedly connected with the pressing plate, the top of flow guide nozzle is provided with the pressing plate groove, the bottom of pressing plate and the inner wall bottom of pressing plate groove are in close contact, the inner wall top of rotating cap is fixedly connected with annular plugboard, the bottom of annular plugboard is provided with the clamping strip. The utility model effectively prevents children from opening the packing accidentally due to twisting the rotating cap at will, and avoids the waste and pollution caused by the leakage of content.

The application discloses a popcorn raw material screening workshop air filtering system and device, and relates to the technical field of industrial dust removal. The system comprises a micro-mechanical property acquisition module, a flow field fluctuation monitoring module, an environment sensing and adhesion coupling module, a multi-physical field coupling calculation module and a self-adaptive dust cleaning execution module. The anti-breaking strength of raw materials is acquired to construct a crushing particle generation potential factor, and the transient concentration impact load is extracted in combination with the dust concentration time series. Meanwhile, the environmental humidity is introduced to establish a dust capillary adhesion index, so that the dynamic calculation of the dust net deposition mass change rate on the surface of the filter bag is realized. On this basis, the difference relationship between the real-time deposition state and the reference working condition is constructed, and the pulse dust cleaning trigger pressure difference threshold is dynamically adjusted, so that the self-adaptive control of the dust removal system is realized. The application can effectively improve the dust treatment efficiency, reduce the energy consumption, prolong the service life of the filter bag, and is suitable for popcorn raw material screening and other industrial scenes with obvious dust concentration fluctuation.

This invention discloses a valve repair system, including a valve repair device and a delivery device. The valve repair device includes at least one pair of clamping portions and at least one pair of elastic clamping portions. In its natural state, the pair of clamping portions are far apart from each other and respectively abut against the clamping portions opposite to them. The delivery device includes at least a pushing component, which includes a pushing catheter. The valve repair device is detachably connected to the distal end of the pushing catheter. The pushing catheter has multiple channels extending through its proximal and distal ends, and at least two opposing channels are included among the multiple channels, which are axially opposite to the two clamping portions. The valve repair system also includes at least two adjusting wires for controlling the angle at which the pair of clamping portions approach each other. Each adjusting wire is movably connected to the clamping portion and then folded in half to form two strands. The proximal ends of both strands can be movably inserted into the channels and connected to the proximal end of the pushing component. The two strands of each adjusting wire do not simultaneously insert into an opposing channel on the opposite side.

The invention relates to the technical field of powder metallurgy, and discloses a powder metallurgy thrust disc forming machining device which comprises a pressure forming mechanism, a powder conveying mechanism is arranged on one side of the pressure forming mechanism, the powder conveying mechanism comprises a supporting frame, and a fixing base is arranged on the upper side of the supporting frame; the fixing base is arranged on the supporting frame and connected with the supporting frame in a sliding mode, an air cylinder used for pushing the fixing base to move is arranged on the supporting frame, and a connecting base is arranged on the fixing base. According to the technical scheme, the screening base provided with the supporting base and the transmission shaft and the supporting frame which is matched with the screening base and provided with the rack are arranged, in the raw material conveying process, along with movement of the screening base, cleaning of the screening net can be conveniently completed through the transmission shaft provided with the scraping plate, and the screening net can be conveniently cleaned through the supporting base provided with the first cavity and the chip removal opening. And by means of the partition plates used in cooperation with the screening base, impurities in the screening base can be conveniently removed, and the screening base is more convenient to clean.

This invention relates to a synchronous grouting construction process behind TBM segments, belonging to the field of TBM construction technology. The process includes installing traction steel wire ropes, TBM step-changing, installing a first membrane bag, forming a first membrane bag ring, forming a second membrane bag ring, and synchronous grouting behind the segments. This process achieves synchronous grouting by sequentially forming adjacent first and second membrane bag rings and directly grouting between them, avoiding segment displacement and eliminating the need for crushed stone backfill, thus simplifying the construction process. By using steel wire ropes on both sides pulling in opposite directions, the entire membrane bag ring is divided into left and right halves for separate installation, shortening the single traction path, reducing frictional resistance, and ensuring the membrane bag passes smoothly through the cavity behind the wall.

This invention relates to the field of energy-saving technology for marine propulsion systems, specifically to a high-efficiency energy-saving device for a refrigerated ship propeller hub cap fin with tilt angle adjustment. It aims to address the industry pain points of existing hub cap fins, such as poor adaptability to various operating conditions, easy failure of dynamic seals, and insufficient reliability. The device includes a propeller hub body and a hub cap fixed coaxially. Multiple sets of rotating shafts with fins are arranged in a ring array on the outer side of the hub cap, and rotating bevel teeth are fixed at the inner ends of the rotating shafts. The propeller hub body houses a magnetically coupled resonant wireless power supply unit, a telescopic device, and a rotating mechanism. The rotating mechanism drives a drive bevel tooth that meshes with the rotating bevel tooth, and the drive bevel tooth is coaxially connected and locked via a connecting shaft. This invention achieves synchronous adjustment and reliable locking of the fin angle through dual-position interlocking switching. It eliminates the risk of through-type dynamic seal failure by eliminating the need for penetrating motion transmission components, making it suitable for all operating conditions of refrigerated ships and the harsh marine environment of the open ocean. It offers a long maintenance-free period and high navigation safety.

The application discloses a contact assembly and nanocrystalline relay and relates to the technical field of relays; the application comprises an insulating frame, two static sheets are arranged on the insulating frame, and static contacts are arranged on the static sheets; a movable plate is slidably arranged on the insulating frame, a dynamic sheet is arranged on the movable plate, two dynamic contacts are arranged on the dynamic sheet; a differential mechanism comprises a frame fixed to the insulating frame, first guide rods and second guide rods are rotatably penetrated into opposite inner walls of the frame; the force generated by an electromagnetic component does not directly act on the dynamic sheet, the differential mechanism is arranged, two-stage speed increase is realized by the differential mechanism, the moving stroke of the dynamic sheet is greater than the moving stroke of the first rack driven by the electromagnetic component, and the moving speed of the dynamic sheet is faster than the moving speed of the first rack driven by the electromagnetic component during the closing or breaking process; the separation speed and the breaking distance are increased, the contact breaking force is sufficient, the generation of electric arc is reduced, and therefore the practicability is improved.

The application relates to a solar cell device and a preparation method thereof, the device comprising a transparent substrate, a transparent front electrode, a first insulating layer, a photoelectric conversion structure layer, a metal back electrode, a second insulating layer and a front electrode lead-out electrode arranged in sequence; the second insulating layer, the metal back electrode and the photoelectric conversion structure layer are provided with a via hole penetrating to the surface of the transparent front electrode, the front electrode lead-out electrode extends into the via hole, is electrically connected with the transparent front electrode and is electrically isolated from the metal back electrode and the photoelectric conversion structure layer; the front electrode lead-out electrode is used for guiding the carriers collected by the transparent front electrode to the outer layer of the device. Compared with a traditional solar cell, the application breaks through the limitation of the device area on the efficiency, enables the organic solar cell and the perovskite solar cell to still maintain a high efficiency under the condition of area expansion, and provides a feasible technical path for the industrialized production of a large-area flexible solar cell.

The utility model discloses raw material melting and stirring equipment, and relates to the technical field of aluminum ingot production, the raw material melting and stirring equipment comprises a mounting frame, the outer wall of the top of the mounting frame is fixedly connected with a plurality of mounting racks, the inner walls of the mounting racks are rotatably connected with a rotating shaft, and the outer wall of the rotating shaft is fixedly connected with an electric melting furnace; a stirring mechanism is arranged on the outer wall of the electric melting furnace and comprises a U-shaped plate, through bevel gears and stirring blades, the bevel gears can drive two second bevel gears to rotate when rotating, then the two second bevel gears can rotate in different opposite directions, and when the two second bevel gears rotate, the two second bevel gears can drive a sleeve and a rotating rod to rotate; when the sleeve rotates, the stirring blades are driven to rotate, and when the stirring blades rotate, the raw materials are stirred and overturned, so that the melting efficiency is improved, the raw materials are heated more uniformly in the equipment through stirring in different directions of the equipment, and the situation that the melting speed of the raw materials is reduced due to insufficient local heating of the raw materials is avoided.

The invention relates to the field of soil remediation, and discloses a soil turning remediation device for saline-alkali soil planting soil improvement, which comprises a head end bearing mechanism positioned on a main frame and used for forming a height-adjustable soil turning structure bearing platform; the staggered pressure-bearing mechanism is located on the main rack and matched with the head end transverse rack and the guiding oppositely-arranged rack to form a driving structure which is sequentially inserted in a staggered mode. And the tunneling and turning mechanism is located on the staggered pressure-bearing mechanism and is matched with the jet air knife pipe, the butt joint guide table and the embedded channel to form an insertion type soil turning tool bit structure. Through the staggered state of eccentric linkage convex rods of the staggered pressure-bearing mechanism, rotating power is converted into asynchronous staggered vertical downward pressure, so that multiple sets of tunneling tool bits cut into hard soil in batches, resistance generated when the tool bits enter the soil at the same time is effectively avoided, the whole machine runs more smoothly, meanwhile, an embedded conical hopper at the bottom is matched with a tunneling hopper, and the tunneling efficiency is improved. The mode of puncturing, splitting and then extracting is more suitable for the hardened layer of the saline-alkali soil.

This utility model relates to the technical field of dust removal equipment for CNC machine tool processing, and discloses a dust removal mechanism for CNC machine tool processing, including a machine tool body, which includes a base, a slide, and a processing component. The slide is slidably disposed on both sides of the base, and the processing component is disposed inside the slide. A dust filter box is detachably connected to the back of the machine tool body. Ventilation cylinders are nested and interconnected on both sides of the upper surface of the dust filter box. A fan is detachably connected to the inner cavity of the ventilation cylinder. Dust suction hoses are interconnected on both bottom ends of the dust filter box. Electric telescopic rods are detachably connected to the outer walls of both bottom ends of the slide. This utility model utilizes a servo motor to drive a guide plate to move and switch the filter chamber, realizing the cleaning and replacement of the dust filter plate without stopping the machine, ensuring continuous operation of the CNC machine tool, improving production efficiency, and facilitating disassembly and assembly, improving the cleaning efficiency and ease of use of the dust filter plate, and making it convenient for use in conjunction with machine tool dust removal.

The invention relates to the technical field of reactor waste heat removal, in particular to a heat dissipation system and method for an ocean floating nuclear energy platform reactor, and the heat dissipation system comprises a loop subsystem, a natural circulation loop, a steam power generation subsystem and an ocean hot trap; the first loop subsystem comprises a reactor core, a pressure container and a coolant pipeline; the natural circulation loop comprises an intermediate heat exchanger, a seawater circulation pipeline and a waste heat discharge main pipeline, and the intermediate heat exchanger is connected with the loop subsystem through a coolant pipeline and used for discharging waste heat to the outside through natural circulation; the ocean heat trap takes external seawater as a final heat trap and is connected with a seawater circulating pipeline, a residual heat discharge main pipeline and a steam power generation subsystem; through the dual design of vapor-liquid separation and pressurization backflow prevention, the core condition for generating a condensation water hammer is avoided from the source, pipeline burst is effectively prevented, and the operation safety of the reactor heat dissipation system of the marine floating nuclear energy platform is remarkably improved.

The invention discloses porous polycaprolactone microspheres for tissue filling and a preparation method of the porous polycaprolactone microspheres, and relates to the field of biomedical materials. The microsphere is composed of polycaprolactone, the diameter of the microsphere is 40-70 [mu] m, the dispersion coefficient of the microsphere is less than 5%, the porosity of the microsphere is 55-85%, and the surface of the microsphere is provided with a uniform open pore structure formed by tridecane. According to the preparation method, a microfluidic technology is adopted, a tridecane-containing polycaprolactone dichloromethane solution is taken as a dispersion phase, a polyvinyl alcohol aqueous solution is taken as a continuous phase, an oil-in-water emulsion is formed through microchannel shearing, and curing, washing and freeze-drying are performed to obtain the tridecane-containing polycaprolactone / polyvinyl alcohol composite material. The microspheres disclosed by the invention have excellent monodispersity and a porous structure, and can remarkably promote fibroblast proliferation and collagen secretion and induce moderate inflammatory response to activate tissue regeneration. The process is simple and controllable, and the obtained microspheres have injectability and a tissue repair promoting function and have application prospects in the field of soft tissue repair.

This utility model belongs to the field of pest control technology, specifically relating to a vibratory sonic repellent device for controlling underground pests. It includes a sonic generating end, a solar panel mounted on the top of the sonic generating end, and a plug-in end fixedly mounted at the center of the bottom of the sonic generating end. A plug-in sleeve is slidably connected to the outer wall of the plug-in end with damping. The bottom of the plug-in sleeve has a conical shape, and pull rods with a "J" shape are fixedly mounted on the top of both sides of the plug-in sleeve. During maintenance, the plug-in end can be directly pulled out from inside the plug-in sleeve. The plug-in sleeve acts to block the soil outside the plug-in end, preventing direct contact between the plug-in end and the soil. This avoids soil resistance during the removal of the vibratory sonic repellent device from the soil, thus reducing the difficulty of removing the device for maintenance.

The utility model discloses a tire mold temperature measuring line take-up device which comprises a mold shell assembly and a cavity assembly arranged in the mold shell assembly, the mold shell assembly comprises a middle sleeve, a base and an upper cover, and a through hole is formed in the middle sleeve; the cavity assembly comprises a plurality of pattern blocks arranged in the circumferential direction and an arch-shaped base arranged on one side of the pattern blocks. The linear guide rail is slidably connected with a sliding seat, the sliding seat is rotatably connected with pulleys, a temperature measuring line of the temperature measuring element sequentially bypasses the pulleys on the sliding seat and is led out of the middle sleeve from the through hole, one side of the sliding seat is provided with a fixing rod, one side of the fixing rod is provided with a tension spring in a hanging mode, and the other end of the tension spring is connected with the arch-shaped seat through a tension spring support. According to the utility model, the problem that the temperature measuring wire is extruded and broken due to looseness in the prior art is solved, the problems of large pay-off resistance and clamping stagnation of the temperature measuring wire caused by crossing and overlapping when the temperature measuring wire is wound are solved, and the operation stability of the temperature measuring device in the tire vulcanization process is ensured.