162results about How to "Reduce erosion" patented technology

The application provides a method and device for establishing a fine choke system in a middle-deep shale gas horizontal well flowback stage, and the method comprises the following steps: S100, collecting original data of a research area; S200, calculating a production pressure difference corresponding to different choke sizes; S300, obtaining a stress sensitivity curve of the production pressure difference corresponding to different choke sizes; S400, obtaining artificial fracture parameters through history matching; S500, establishing a flowback model; S600, establishing a flowback numerical model; and S700, analyzing based on a numerical simulation result of the flowback numerical model. The application solves the problem that a field horizontal well flowback system lacks theoretical support and technical guidance, can reduce the influence of stress sensitivity damage, support agent backflow and embedding, and ground process erosion or blockage in the flowback process, and lays a foundation for maximizing the productivity of a shale gas well.

The utility model discloses a submarine gate mechanism of a mold, which comprises a lower mold plate, supporting seats arranged on two sides of the top end of the lower mold plate, a base fixed on the top end of the lower mold plate between the supporting seats, a lower mold seat fixed on the top ends of the two supporting seats, a lower mold arranged on the top end of the lower mold seat, and an upper mold arranged above the lower mold, the bottom end of the upper mold makes contact with the top end of the lower mold, an upper mold plate is fixed to the top end of the upper mold, a pouring mold head is installed in the center of the top end of the upper mold plate, a protective cover is arranged at the top end of the upper mold plate on the outer side of the pouring mold head, a connecting belt is arranged on the outer wall of one side of the protective cover, and a cover plate is installed at the end, away from the protective cover, of the connecting belt. And an inserting ring is mounted at the edge position of the inner wall of the cover plate. According to the pouring gate mechanism, the phenomenon that external particulate matter flows into the upper die cavity and the lower die cavity to cause erosion is reduced, the production efficiency of products is improved when the pouring gate mechanism is used, and the convenience is improved when the pouring gate mechanism is maintained.

The application relates to the technical field of building construction, and discloses a building construction platform which comprises a main body, a limiting structure, two first locking structures, a supporting structure, two threaded rods, two connecting ropes and a transport vehicle. The inside of the main body is provided with a transport structure, the limiting structure and the transport structure are provided with a second transmission structure, the second transmission structure and the threaded rods are connected with each other through a first transmission structure, the first transmission structure and the limiting structure are connected with each other through a first locking structure, the inside of the limiting structure is provided with a second locking structure close to the first transmission structure and used for fixation. The material plate can be moved into the inside of the limiting structure through the transport vehicle. When the material plate is moved into the inside of the unloading platform, the position of the material plate is limited through the limiting structure, the bearing area of the material plate is greatly improved, and the transportation efficiency is improved.

This invention discloses a refractory high-entropy alloy resistant to high-temperature molten aluminum corrosion and erosion-wear, its preparation method, and its applications. The refractory high-entropy alloy of this invention comprises, by atomic percentage: 40-50 at.% Nb, 35-40 at.% Ti, 4-10 at.% Mo, 4.5-5 at.% Cr, and no more than 10 at.% Al. This invention obtains the refractory high-entropy alloy by mixing and melting the raw materials under a protective atmosphere. The refractory high-entropy alloy ingot of this invention has a single-phase BCC microstructure, exhibiting stable structure, good mechanical properties, and excellent resistance to molten aluminum corrosion and erosion-wear. The Nb-Ti-Mo-Cr based refractory high-entropy alloy resistant to molten aluminum corrosion and erosion-wear prepared using this invention can significantly improve the service life of components, reduce replacement frequency, and has high economic benefits.

The utility model discloses a lightning protection mechanism of a power distribution cabinet for power transmission, and belongs to the technical field of power transmission equipment. The device mainly comprises a synchronous driving unit, the synchronous driving unit is installed at the top of the power distribution cabinet and drives a retracting and releasing unit to rotate at the top of the power distribution cabinet, the retracting and releasing unit comprises a worm, a worm gear and a rotating rod, the worm is in meshed connection with the side wall of the worm gear, and the rotating rod is in key connection with the interior of the worm gear. One end of each rotating rod is rotationally connected to the inner side wall of the power distribution cabinet through a bearing seat, the other end of each rotating rod is fixedly provided with a lightning protection unit, and the synchronous driving unit is matched with the retracting and releasing unit, so that flexible retracting and releasing of the lightning protection units are achieved. In no thunder and lightning weather, the lightning protection unit can be recycled into the power distribution cabinet, external environment erosion is reduced, and the service life of the lightning rod, the insulating base and other components is prolonged.

The application relates to the technical field of wafer processing equipment, in particular to a reaction cavity for a high-hydrogen process and a plasma processing equipment, which comprises a quartz tube, a first coil is arranged outside the quartz tube and is connected with an external radio frequency power source, a Faraday shield cage is arranged outside the quartz tube and between the quartz tube and the first coil, a plurality of slits are formed in the Faraday shield cage and extend along the axial direction, a blocking piece is arranged in the quartz tube, and the structure formed by the orthographic projection of the blocking piece on the circumferential side wall of the Faraday shield cage covers the structure formed by the orthographic projection of the first coil on the circumferential side wall of the Faraday shield cage. The blocking piece arranged in the quartz tube can effectively block the concentrated bombardment of the plasma generated in the high-hydrogen process on the inner wall of the quartz tube, significantly reduces the erosion of the quartz tube and the peeling of the particles, and improves the process yield of the plasma processing equipment and the service life of the equipment.

The utility model relates to the technical field of sign post frames, and discloses a height-adjustable road sign post frame which comprises a supporting pipe, a sign frame arranged on one side of the supporting pipe and an adjusting assembly arranged in the supporting pipe and used for adjusting the height of the sign frame. Through mutual cooperative use of a supporting pipe, a card frame, a moving plate, a roller supporting frame, a first steel wire rope and a moving bin, the effect of adjusting the height of the card frame can be achieved, the rotating resistance of a winding drum is reduced through a counterweight balance system, and under cooperation of the roller supporting frame and the first steel wire rope, the moving plate and the card frame reach the target height; by means of the speed reduction and self-locking structure, other operations are not needed when the worm rotates, multi-person cooperative operation is not needed, manpower is saved, meanwhile, safety is guaranteed through the self-locking structure, safety is guaranteed by screwing a bolt into a threaded groove to fix the worm gear, and the worm gear is practical.

The invention relates to the technical field of building energy conservation, heat preservation and heat insulation materials, and discloses a flame-retardant phase-change heat preservation and heat insulation building material and a preparation method thereof.The preparation method of the flame-retardant phase-change heat preservation and heat insulation building material comprises the following steps that paraffin is loaded in ZnO / CuO hollow microspheres to obtain phase-change microspheres; modifying the phase change microspheres with polydopamine and acryloyl chloride to obtain functionalized phase change microspheres; the preparation method comprises the following steps: carrying out graft polymerization on a phosphorus-containing eugenol compound and 1-amino-5-hexene-2-alcohol on the functionalized phase change microspheres to obtain multifunctional phase change microspheres; polyether polyol, functionalized polyol, myricetin, multifunctional phase-change microspheres and the like are used as raw materials, foaming is performed, and the flame-retardant phase-change heat-preservation and heat-insulation building material is obtained. The flame-retardant phase-change heat-preservation and heat-insulation building material is excellent in heat-preservation and heat-insulation performance, flame-retardant performance and mechanical performance, has anti-ultraviolet performance and antibacterial and mildew-proof performance, can reduce erosion damage caused by external conditions, and prolongs the service life.

This invention relates to a deep foundation pit support structure for underground sewage treatment plants based on double-row piles, comprising a first support component, a second support component, a support component, a cross brace component, and a cable assembly. The first support component is disposed around the perimeter of the deep foundation pit, and the first and second support components are staggered. The support component is disposed between the first and second support components, and the cross brace component is disposed between the opposing first support components. The cable assembly is also connected to the outer side of the second support component, and the cable assembly extends outward to the anchor pier. This invention not only stabilizes the foundation pit support of underground sewage treatment plants, facilitating construction, but also reduces the difficulty of foundation pit support construction.

The application belongs to the technical field of etching liquid, and particularly relates to a photoresist stripping liquid for OLED, a preparation method and application thereof. The photoresist stripping liquid comprises, with the total mass of the formula being 100%, 1-10% of organic alcohol amine, 2-5% of amidino compound, 0.1-3% of polyol, 0.01-0.2% of betaine type corrosion inhibitor, and the rest is organic solvent. The photoresist stripping liquid for OLED has excellent stripping performance and good protection effect on the Al layer. The photoresist stripping liquid is particularly suitable for stripping requirements of OLED devices containing Al, can safely strip the photoresist which is cross-linked and carbonized after solidification, and at the same time protects the Al process in the OLED device from being corroded, and has good application prospect.

The application discloses a kind of tread-resistant organic covering garden roads and its manufacturing method, by composite organic covering layer, leveling layer, cushion layer, waterproof layer, waterproof protective layer and drainage ditch composition;The prepared organic covering garden road has higher compactness and tread-resistant ability, increases the mildew-proof, fireproof, windproof ability of organic covering garden road, greatly improves the service life and safety of organic covering garden road, also has the effect of keeping moisture, adsorbing dust, adjusting soil temperature, increasing soil fertility, inhibiting weeds, promoting planting growth, reducing soil erosion and decoration beauty etc.

The utility model relates to the technical field of pipe fittings, in particular to a liquefied natural gas pipeline installing and positioning assembly which comprises a connecting disc, the connecting disc is installed between two liquefied natural gas pipelines, flanges are fixed to the ends of the liquefied natural gas pipelines, a plurality of screws are fixed to the two sides of the connecting disc respectively, and rubber sleeves are arranged on rod bodies of the screws in a sleeved mode. One end of the screw rod is sleeved and screwed with a nut, the outer ring surface of the connecting disc is provided with a rubber cover, and the rubber cover wraps the flange; the device has the beneficial effects that the rubber cover arranged on the outer ring surface of the connecting disc can wrap and protect the screw rod and the nut. After the screw rod and the nut are in threaded connection, the rubber cover is pulled out of the containing groove and arranged on the flange in a sleeving mode, the rubber ring is arranged at the connecting position of the liquefied natural gas pipe and the flange in a sleeving mode, erosion of external water vapor to the screw rod and the nut can be effectively reduced, the service life of a connecting part is prolonged, and the maintenance cost is reduced.

The utility model relates to the technical field of gas diffusion tower ignition, in particular to an installation structure and a blast furnace gas ignition combustion accompanying device, which comprise an ignition unit, the ignition unit comprises a high-tension porcelain insulator, an ignition electrode and an ignition rod, the high-tension porcelain insulator is provided with the ignition electrode, the ignition electrode is provided with the ignition rod and a diffusion tower main combustion tube, and the diffusion tower main combustion tube is provided with a diffusion tower main combustion tube. A second auxiliary combustion pipe is arranged at one end of the diffusion tower main combustion pipe, an ignition unit is arranged on the second auxiliary combustion pipe, a first auxiliary combustion pipe is arranged at the other end of the diffusion tower main combustion pipe, the electrode ignition unit is adopted for ignition work, and during ignition work, an ignition needle extending into the auxiliary combustion pipe is connected with the first auxiliary combustion pipe after being powered on. And electric arc can be generated to ignite the internal coke oven gas, so that the diffusion tower is ignited through the combustion-accompanying pipe, the discharged gas is consumed, and the safety and stability of a gas pipe network are ensured.

This application discloses a one-way valve for automotive piping systems, relating to the field of one-way valve technology. The application includes a valve housing with an annular groove in its inner middle section. An abutment ring is fixedly connected inside the valve housing. A mounting platform is fixedly connected inside the valve housing, and a compression groove is formed inside the mounting platform. An elastic airbag is fixedly connected inside the compression groove. A T-shaped slide rod is fixedly connected to one end of the elastic airbag. An insertion hole adapted to the T-shaped slide rod is formed at one end of the mounting platform. One end of the T-shaped slide rod passes through the insertion hole and is fixedly connected to a valve plug adapted to the abutment ring. This application utilizes the elastic airbag and internal gas pressure to assist a spring in pushing the valve plug against the abutment ring, thereby creating contact. Simultaneously, the elasticity of the airbag absorbs some of the impact and vibration experienced by the valve housing, mitigating sealing problems caused by vibration. Furthermore, when the spring experiences metal fatigue, the elastic airbag can serve as a backup mechanism to ensure the system continues to operate normally, effectively improving the reliability of the device.

This utility model relates to the field of auxiliary equipment for construction engineering, and discloses a portable material classification, storage, and transportation box for construction engineering. The box includes a storage box with two fixed plates fixedly connected to its bottom inner wall. A motor is fixedly connected to the inner wall of one of the fixed plates, and a gear is fixedly connected to the drive end of the motor. Connecting rods are rotatably connected inside both fixed plates, and a gear is fixedly connected to the outer wall of one of the connecting rods. Transmission plates are fixedly connected to the outer walls of both connecting rods, and connecting rods are fixedly connected to the inner walls of both transmission plates. This utility model reduces the corrosion of the box material by rainwater and acidic or alkaline liquids such as construction site concrete slurry, prevents aluminum alloy oxidation and steel plate rusting, maintains structural strength, and the sealed structure reduces the leakage of volatile gases while preventing the intrusion of external corrosive gases, ensuring the chemical stability of the materials.

The utility model discloses a ridge tile convenient to install lamp strip, first lamp strip mounting portion and second lamp strip mounting portion symmetrical horizontal setting in its inboard along the length direction of first flow guide portion, first lamp strip mounting portion and second lamp strip mounting portion all are equipped with a plurality of mounting holes, and the inboard of first lamp strip mounting portion and second lamp strip mounting portion is connected with second flow guide portion and third flow guide portion respectively, and second flow guide portion and third flow guide portion are inclined downward to the roof of two sides respectively to drain the rainwater received from first flow guide portion to the roof, and the both sides of ridge tile mounting portion are connected with second flow guide portion and third flow guide portion simultaneously to install ridge tile on the roof ridge, so setting, increase the stable shape of ridge tile installation, and the installation of lamp strip does not need to use the nail to punch the hole installation, and installation and disassembly are all simple and quick, reduce the leakage or security hidden danger caused by the ridge tile loosening when replacing the lamp strip, also reduced the adverse effect that sunlight and rainwater bring to the lamp strip, prolong the service life of lamp strip.

This utility model relates to the technical field of electricity metering boxes, and discloses a modular electricity metering box, including a box body. A guide rail is fixedly connected to the outer wall of the box body, and a fixing block is fixedly connected to the outer wall of the box body. A buckle is rotatably connected between the fixing blocks. A handle is fixedly connected to the outer wall of the buckle, and a limit component is provided inside the buckle. A rotating rod is rotatably connected to the outer wall of the box body, and a baffle is fixedly connected to the outer wall of the rotating rod. A retaining strip is fixedly connected inside the baffle. A discharge hole is provided inside the box body. In this utility model, through the ingenious cooperation of components such as the rotating handle, buckle, rotating rod, and retaining strip, a convenient and secure connection between the boxes is achieved. At the same time, the reset and fixing mechanism formed by the spring and the baffle ensures that the box body is stable and reliable after connection, effectively avoiding loosening and separation caused by external forces, and improving the overall structural stability and safety.

This invention relates to the field of fuse technology and discloses an intelligent electric drop-out fuse, comprising a support assembly, the support assembly including an insulating support, a fixing member fixedly connected to one side of the top of the insulating support, a moving contact piece fixedly connected to the inner side of the top of the fixing member, a solenoid coil electrically connected to the top of the moving contact piece, a fuse tube assembly mounted at the bottom of the moving contact piece, and a self-cleaning assembly fixedly connected to one side of the top of the fuse tube assembly, the self-cleaning assembly including a mounting plate, a slider mounted on the top of the mounting plate, and a scraper fixedly connected to the top of the slider. When the solenoid coil is energized, it generates a magnetic field, eliminating contact welding. The fuse tube assembly releases air, releasing the locking block and allowing the scraper to contact the contact. The self-cleaning mechanism, combined with the drop-out of the fuse tube assembly, prevents the fuse from failing to drop due to welding of the moving contact piece. The angle between the scraper and the top of the slider is between 60-75°, avoiding the problem of the fuse failing to drop due to welding of the moving contact piece.

The application belongs to the technical field of industrial coatings, and discloses a preparation process of self-cleaning FEVE varnish. The preparation process of the self-cleaning FEVE varnish comprises the following steps: (1) preparing a protective latex emulsion; (2) adding a wetting agent and a defoaming agent; (3) adding a composite sol; (4) adding FEVE resin, then adding a curing agent, and preparing the self-cleaning FEVE varnish after aging. The self-cleaning FEVE varnish prepared by the preparation process of the self-cleaning FEVE varnish has excellent adhesion, high weather resistance and good self-cleaning performance, and can be widely applied to building outer walls, transportation equipment, ocean facilities, urban public facilities and the like.

The utility model provides a kind of farmland type ecological buffer zone structure, it is related to agricultural ecological environment management technical field, including land buffer area one, ecological regulation pond, land buffer area two and concave green land, land buffer area one, ecological regulation pond, land buffer area two and concave green land are sequentially distributed from farmland side to river embankment side, land buffer area one and land buffer area two are planted with arbor shrub and grass flower mat, the ecological regulation pond is sequentially provided with impermeable layer, adsorption layer and plant layer from bottom to top, the concave green land is laid with buffer base, the concave green land is planted with herbaceous plant and shrub. This structure effectively intercepts farmland non-point source pollution, reduces river pollutant, helps to strengthen river self-purification capacity, promotes aquatic animal and plant diversity development, and guarantees ecological benefit to play well.

The utility model relates to cement pole flange technical field discloses a taper cement pole flange waterproof connecting piece, including flange mechanism, the inside between flange mechanism is provided with sealing washer, the upper and lower end of flange mechanism is penetrated and is provided with fastening assembly, the top side of flange mechanism is provided with inclined slope flow guide groove, the lateral wall of flange mechanism is provided with drainage assembly, the outside cover of flange mechanism is connected with protection assembly, the fastening assembly includes bolt, nut and U type buckle. Through the synergies of multiple components to realize multiple beneficial effects: the sealing washer of flange mechanism inside can effectively enhance the connection sealing, blocks the moisture from the gap infiltration, the cooperation of bolt and nut in fastening assembly realizes the close fixing of flange, U type buckle further consolidates and prevents loosening, improves the overall connection stability, the top side slope flow guide groove guides the water flow to drainage assembly, and the efficient drainage of pipeline, filter screen avoids the blockage of impurities, and guarantees the smooth drainage.

This invention belongs to the technical field of mechanical sand-fixing equipment, specifically relating to a straw checkerboard laying vehicle. It includes a chassis supporting the upper structure, with a traveling mechanism at the lower end of the chassis. In this embodiment, the traveling mechanism is a tracked type. A straw roll conveyor is bolted to the top of the chassis, and a pressing machine is installed at the rear end of the conveyor. A hopper is installed at the top of the conveyor. The straw rolls are laid on the sand by the conveyor, and then the pressing machine presses the laid straw rolls into the sand along the middle to fix them in place. This system enables automated, integrated straw checkerboard laying. The robot is small in size, has excellent maneuverability, and can adapt to various complex terrains in the desert. Its high degree of automation reduces the trampling of straw checkerboards and effectively improves the efficiency of straw checkerboard laying.

The present application belongs to the field of metallurgy, and particularly relates to a method for stopping blast furnace and lowering material surface, comprising the following contents: (1) adjusting the furnace operation before stopping; (2) adjusting the stopping material and optimizing the material distribution matrix; (3) pre-turbine, replacing the tuyere small sleeve and controlling the furnace top temperature; (4) stopping and lowering the material surface: 1. increasing the ratio of top pressure and hot blast pressure: the ratio of top pressure and hot blast pressure is increased to 0.68-0.75; 2. taking different degrees of control on the top temperature when the material surface is at different positions of the blast furnace: (1) when the material surface is above 1 / 2 of the bosh, the top temperature is controlled at 320-350 DEG C; (2) when the material surface is below 1 / 2 of the bosh, the top temperature is controlled at 280-300 DEG C; 3. spraying coal powder, oxygen enrichment, increasing and continuously maintaining the nitrogen gas injection of the tuyere after stopping the coal injection; 4. controlling the gas composition; 5. controlling the [Si] of the molten iron. The method can avoid the blast furnace explosion in the process of stopping and lowering the material surface, prolong the coal gas recovery time, shorten the time of stopping and lowering the material surface, save the coke consumption and reduce the cost.

The utility model provides a kind of adjustable stroke air damper, the air damper includes: lower mounting seat, the lower mounting seat is fixedly connected with fixed cylinder, the fixed cylinder bottom end surface is fixedly sleeved with base;Shock column, the shock column is slidably connected in fixed cylinder side surface, the shock column top end is equipped with upper mounting seat;Shock absorbing spring, the shock absorbing spring is sleeved in fixed cylinder surface;Protective assembly, the protective assembly is sleeved in shock absorbing spring surface;Stroke control mechanism, the stroke control mechanism is installed in fixed cylinder bottom end.Protective cylinder moves with upper mounting seat, insulates outside hard thing and collides with shock absorbing spring, guarantees the integrity of shock absorbing spring surface, avoids coating drop, reduces the erosion of moisture dust, adjusts the damping of compression stage by gas flow control assembly, so that damper is more stable when bearing impact, controls the damping of rebound stage by adjusting assembly, avoids secondary vibration caused by spring rebound too fast.

This utility model relates to the field of building pipeline technology, specifically a wall-penetrating device for leak-proof pipes in building structures. It includes a wall and a pipe. The surface of the wall has a perforation for the pipe to pass through. The surface of the pipe is equipped with a sealing device, which includes an air bladder and a cover. The air bladder is sleeved and connected to the pipe. There are two covers, each sleeved and connected to the pipe. The inner wall of the air bladder has a cavity. An inlet valve and an outlet valve are fixedly connected to the surface of the air bladder. A threaded sleeve is fixedly connected to the surface of the cover. This utility model, by setting up a sealing device, inflates the air bladder through the inlet valve, using its expansion to fill the gap between the pipe and the wall perforation. This sealing method can adapt to various irregular gap shapes and, together with the cover, provides protection. It reduces the need for concrete filling for leak prevention, which leads to inconvenient operation and subsequent disassembly, thus improving overall practicality.

The embodiment of the utility model provides a cast-in-place concrete slope protection forming template capable of adjusting gradient, which relates to the technical field of concrete slope protection processing and comprises a side plate and a top plate arranged at the upper end of the side plate, a positioning hook is arranged on one side of the top plate, a rotating shaft is further arranged on one side of the upper end of the top plate, and a supporting piece is arranged on the other side of the top plate. When the side plates are used for machining the concrete slope protection, the transverse baffles and the vertical baffles are spliced, then the top plate at the upper end is installed, after the top plate is adjusted to the proper gradient, concrete is poured into the top plate for forming, and then the slope protection can be conveniently made into the proper gradient for use.

The invention discloses an industrial pure iron clean molten steel smelting method based on LF-RH cooperative oxygen control demanganization. The smelting method comprises the following steps of converter smelting, LF furnace refining and RH furnace vacuum treatment. In the converter smelting step, the manganese content of molten iron at the end point is within 0.04%; in the LF furnace refining step, oxide scale is added for demanganization, and the manganese content of molten steel is treated to be smaller than or equal to 0.02%; in the RH furnace vacuum treatment step, oxygen blowing demanganization is carried out, an oxygen blowing stage is formed by every 100-150 m < 3 >, oxygen blowing is paused after oxygen blowing of each stage is completed, after circulation is carried out for 1-2 minutes, the manganese content [Mn] in the molten steel is rapidly analyzed, the process is repeated until the manganese content [Mn] in the molten steel is smaller than or equal to 0.015%, and then aluminum particles are added for demanganization. According to the method, the manganese content of the industrial pure iron can be controllably reduced to 0.02% or below, and the oxygen content of the industrial pure iron can be controllably reduced to 5 ppm or below.

The utility model discloses the power tower maintenance platform of collapsible storage belongs to power tower maintenance auxiliary equipment technical field, including first bearing plate, the outer surface rotationally connected with second bearing plate of first bearing plate, the upper surface of first bearing plate and the upper surface of second bearing plate all are set with sinking groove, and the inner wall of two sinking grooves all are fixedly connected with antiskid grid, the upper surface of second bearing plate is set with a plurality of slide grooves, and the inner wall of each slide groove all is slidably connected with handrail, through the rotationally connected design of first bearing plate and second bearing plate, realize the folding function of platform, and the volume after storage is greatly reduced, and transportation and storage are convenient, reduce the handling and storage cost, after folding second support platform, the protection shed can form protection to platform main part, can shield sunlight and rain, thereby reduce the environmental erosion, reduce the aging speed of maintenance platform, prolong the service life of maintenance platform.

The invention discloses a yaw gear ring and brake mechanism of a wind driven generator, and relates to the field of yaw system application of the wind driven generator, the yaw gear ring and brake mechanism comprises a tower body and a tower cabin, a plurality of groups of hydraulic calipers are mounted at the bottom of the tower cabin, a brake disc is mounted on the inner side of the tower body by arranging a column foot, an embedding groove is formed in the top of the tower body, and an annular frame is mounted in the embedding groove; an annular pipe is embedded in the annular frame, and a plurality of sets of air nozzles are evenly formed in the inner side and the outer side of the annular pipe. The annular frame is arranged on the surface of the brake disc to install the annular pipe, the annular pipe is used for conducting air injection treatment on the surface of the brake disc, a certain heat dissipation effect can be achieved, the risk of thermal deformation of the brake disc caused by friction is reduced, oil dripping on the surface of the brake disc can be blown away through air injection treatment, and the retention time of leaked oil is shortened; and through air injection treatment, fixed particles falling off from the friction plate of the brake calipers can be blown away in time, and secondary scratching of the fixed particles to the surface of the brake disc is reduced.

The utility model relates to LED lamp technical field especially relates to a module integrated type LED lighting lamp, including with the mounting bracket rotation connection and by the lamp shade and lamp shell are composed LED lamp, strong magnetic strip no.