27results about How to "Reliable anchoring" patented technology

This invention relates to the field of oilfield thermal recovery well technology, and discloses a well completion process device, a column-type ground anchor, and a method for increasing the prestress of the oil layer casing. The well completion process device includes a surface casing (1) located below the surface, an oil layer casing (2), and a casing head body (3). The oil layer casing is connected to the inner surface of the casing head body via a connecting assembly (40). A column-type ground anchor (500) is connected to the bottom of the oil layer casing. The column-type ground anchor includes an anchor claw (502) and a plunger body (530). A liquid outlet (501) is formed on the column-type ground anchor. The anchor claw can extend out of the side wall of the plunger body and insert into the formation. Cement can be discharged from the liquid outlet to seal the annular gap between the oil layer casing and the formation. This invention uses hydraulic oil to insert the anchor claw into the formation, pulling the oil layer casing to a preset load. After the oil layer casing is pulled up, it is clamped to the inner wall of the casing head body via the connecting assembly, thus increasing the prestress.

The application belongs to the technical field of carbonyl sulfur hydrolysis catalysts, and discloses a high-efficiency sulfur-resistant catalyst for carbonyl sulfur hydrolysis, a preparation method and application thereof.The preparation method comprises the following steps: (1) preparing a porous ceramic carrier containing alumina, titanium dioxide and zirconium dioxide; (2) in-situ growing a metal organic framework material containing lanthanum, bismuth and cerium on the surface of the porous ceramic carrier by using a solvothermal method; (3) performing a calcination treatment on the porous ceramic carrier loaded with the metal organic framework material in an oxygen-containing atmosphere to obtain a catalyst precursor; and (4) performing a reducing gas plasma bombardment treatment on the catalyst precursor to obtain the high-efficiency sulfur-resistant catalyst.The high-efficiency sulfur-resistant catalyst has high-efficiency low-temperature activity, excellent sulfur resistance and long service life.

The utility model discloses a kind of widening structure of municipal road, including the filling plate as widening base layer, the accommodating groove of downward recess is equipped on filling plate upper surface, the rubber particle layer solidified by cementing agent is filled in accommodating groove, the groove bottom of accommodating groove is equipped with reinforcing plate that is interlaced longitudinally and transversely, reinforcing plate is fixedly connected with filling plate, for enhancing the overall stiffness and deformation resistance of widening structure, the bottom of filling plate is connected with connecting assembly, connecting assembly includes the connecting column inserted into soil, the outer wall of connecting column is equipped with the plug-in cone for increasing friction, connecting column is equipped with expansion assembly in, expansion assembly includes the pull block for making the outer wall of connecting column outwardly offset, the surface of filling plate, connecting assembly and expansion assembly is equipped with rust-proof paint. By filling plate and rubber particle layer combination, it is convenient to quickly lay, also can cope with certain degree of thermal expansion and cold shrink, the cooperation of connecting column and expansion assembly realizes firm anchoring with ground.

The invention discloses an artificial fish reef and an artificial fish reef putting method, and belongs to the technical field of water ecological restoration and fishery engineering. The artificial fish reef comprises a reef body, an anchoring structure and a take-up structure. The reef body is of a reinforced concrete frame structure, a bottom plate is closed, other faces are open, protective nets and cross beams are arranged on the side portions, the cross beams are connected through connecting rods, and planting boxes can be installed on the connecting rods. The anchoring structure comprises an anchor hook and an anchor chain, and the take-up structure comprises a take-up box, a take-up roller, a spring and a spring trigger assembly. Through cooperation of the trigger rod and the limiting rod, automatic retracting, releasing and anchoring of the anchor chain are achieved, the structure is stable, installation is convenient and fast, water flow scouring can be effectively reduced, the survival rate of submerged plants is increased, a spawning and inhabiting place is provided for fishes, and the fish gathering effect is remarkably improved.

This invention discloses a samarium-modified biochar catalyst, its preparation method, and its application. The method includes the following steps: Step 1, cleaning, drying, and grinding *Platycladus orientalis* leaves to obtain *Platycladus orientalis* leaf powder; Step 2, dissolving Sm(NO3)3·6H2O in deionized water to prepare a samarium salt solution, adding the *Platycladus orientalis* leaf powder to the samarium salt solution, stirring for 1 h, allowing it to stand and soak for 12 h, and then drying to obtain a samarium-supported *Platycladus orientalis* leaf powder precursor; Step 3, placing the samarium-supported *Platycladus orientalis* leaf powder precursor in a tube furnace, heating it to 500-700℃ at a heating rate of 5℃ / min under a protective gas atmosphere, pyrolyzing for 3-4 h, naturally cooling to room temperature, and then washing, drying, grinding, and sieving to obtain the samarium-modified biochar catalyst. The biochar catalyst prepared by this invention can efficiently and stably activate persulfate, thereby rapidly degrading amoxicillin in wastewater, and can be recycled multiple times. It has the advantages of low metal leaching rate and wide availability of raw materials.

The utility model relates to the technical field of medical instruments, in particular to an artificial valve clamping piece and a conveying system. The artificial valve clamping piece comprises a clamping piece body, a connecting wire and a traction structure, the clamping piece body comprises a pipe body and a plurality of through holes formed in the pipe body, the pipe body is in a wave shape, and the two ends of the pipe body are closed to form a ring shape; the connecting wire penetrates into the tube body, and the end part of the connecting wire penetrates through the through hole in the tube body and then is suitable for being connected with the artificial valve; the traction structure comprises a traction wire, the traction wire is arranged in the pipe body in a penetrating mode through a through hole in the pipe body, and the traction wire is suitable for being connected with a conveying system. The clamping piece is of a periodic wave-shaped or fluctuating annular structure, can be fixed to the periphery of the outer surface of the artificial valve, can be radially compressed and expanded according to the size of the internal artificial valve, and is matched with the artificial valve to clamp the autologous valve leaflet, so that the artificial valve can be stably anchored at an accurate position without displacement, and meanwhile, the clamping piece can be used for clamping the autologous valve leaflet. The clamping device can reduce the occurrence risk of perivalvular leakage.

The invention discloses a copper-silicon catalyst for plasma treatment as well as a preparation method and application of the copper-silicon catalyst. According to the method, a copper-silicon catalyst precursor prepared by a traditional ammonia distillation method is subjected to dielectric barrier discharge plasma treatment in the atmosphere of H2 / Ar and the like, and traditional high-temperature roasting and reduction processes are replaced. According to the method, efficient reduction and high dispersion of copper can be achieved at the room temperature, the Cu < + > / Cu0 proportion is regulated and controlled, and the strong interaction between metal and a carrier is enhanced. The catalyst is used in a reaction for preparing ethylene glycol through hydrogenation of dimethyl oxalate, the activity, selectivity and stability of the catalyst are higher than those of a traditional heat treatment catalyst, the dimethyl oxalate conversion rate reaches up to 100%, the ethylene glycol selectivity is larger than 97%, and the stability reaches 1000 h or above. The method is simple in process, low in energy consumption and environment-friendly, and has a wide industrial application prospect.

This invention belongs to the field of medical materials, specifically relating to a patterned bio-barrier membrane with self-adhesive function and its preparation method. The preparation method includes: dissolving the adhesive matrix in a buffer solution, then adding reactive amino acids and a stabilizer to obtain a first mixture; adding ethanol and a hydrophobic agent to the first mixture, and stirring under heating conditions to obtain a second mixture; adding a thickener, a calcium supplement, and a reinforcing agent to the second mixture, continuing stirring, and then adding a protein precipitation reagent to precipitate the mixture, obtaining a hydrogel; covering a collagen membrane with a patterned porous mold, and adding the hydrogel to allow it to flow into the pores and solidify. This invention achieves precise adhesive loading through patterned design, combining advantages such as simple operation, reliable fixation, good biocompatibility, and high osteogenic efficiency, effectively solving the barrier membrane fixation problem in GBR technology, and is suitable for bone defect treatment in dental implant prosthesis restoration.

The utility model discloses a kind of automobile wheel cover mudguards, it is related to automobile parts technical field, it includes mudguard body, mudguard body includes the base of n shape, the rear side of base is provided with cover body, the middle part of cover body is provided with gap part, and the upper end of gap part extends to base;The outer side of cover body is provided with sound-absorbing pad;The left end of base is bent to form flanging portion to left, the rim of flanging portion is provided with a plurality of first fastener, and a plurality of second fastener are provided on flanging portion.The utility model effectively solves the defects of prior art in the aspects of assembly efficiency, noise control and structural stability, realizes the comprehensive beneficial effects of reducing cost, improving environmental protection and durability.

The invention belongs to the technical field of fuel cell proton exchange membranes, and discloses a cross-linking type polybenzimidazole proton exchange membrane with oxidation resistance and high proton conductivity and a preparation method of the cross-linking type polybenzimidazole proton exchange membrane. According to the cross-linking type polybenzimidazole, after polymerization of raw material monomers is completed, a silane coupling agent is added as a cross-linking agent, and polybenzimidazole containing the cross-linking agent is obtained through reaction. The polybenzimidazole containing the cross-linking agent can be prepared into a cross-linking type polybenzimidazole proton exchange membrane by using a solution casting method. According to the cross-linked polybenzimidazole disclosed by the invention, a stable and uniform Si-O-Si cross-linked network is constructed by adding the cross-linking agent and taking a hydroxyl group on the polybenzimidazole as a main reaction site, so that synchronous improvement of antioxidant stability and proton conductivity is synergistically realized. The polybenzimidazole proton exchange membrane containing the cross-linking agent has a good application prospect in the aspect of proton exchange membrane fuel cells.

The invention discloses a ship engine methanol fuel supply pipeline detection device, and relates to the technical field of pipeline detection, the ship engine methanol fuel supply pipeline detection device comprises a cabinet, and the upper surface of the cabinet is fixedly provided with a panel. By arranging the case and the panel, a firm protective shell and a flat operation platform are provided for the whole detection device, the case is made of an anti-corrosion material so as to adapt to the marine environment, and the panel serves as an installation reference of each functional module; the spraying mechanism is used for rapidly injecting a detection solution into the methanol fuel supply pipeline, a first connecting frame is fixedly arranged on the outer surface of the spraying mechanism, and the first connecting frame is fixedly connected to the inner wall of the panel. By arranging the spraying mechanism and the first connecting frame, a high-pressure injection system of a detection solution is formed, the first connecting frame provides accurate mounting and positioning for the spraying mechanism, and the spraying mechanism is responsible for generating controllable pressure to quickly inject the detection solution into a to-be-detected pipeline, so that the effect of sealing and detecting a supply pipeline is achieved.

This invention relates to the field of metal oxide technology, specifically to a highly dispersed nano-gadolinium oxide and its preparation method. The preparation method includes: activating surface sites through weak acid etching, pulsed ultrasonic depolymerization, and hydrothermal re-hydroxylation; adsorption using a polycarboxylic acid chelating agent; introducing hydrophobic chains and tertiary amine groups through sequential amidation; forming a strongly hydrated outer layer through beet alkalization; and finally, ultrafiltration desalting and concentration. The nano-gadolinium oxide dispersion obtained by this method has advantages such as narrow particle size distribution, low viscosity, good storage stability, and strong electrolyte resistance, making it suitable for high-end applications such as polishing slurries and coating precursors.

The application discloses a preparation method of hydrogenated aldehyde ketone resin without free formaldehyde, belongs to the technical field of aldehyde ketone resin synthesis, and aims to solve the technical problems of high free formaldehyde content, and further improved hydroxyl value stability and transparency in the hydrogenated aldehyde ketone resin in the prior art, and specifically comprises the following steps: under the protection of an inert gas atmosphere, phenylacetone, polyformaldehyde and a solvent are mixed and stirred, the reaction system is heated to 60-75 DEG C, and an inorganic alkali is added into the reaction system. The application is characterized in that the basic aldehyde ketone resin solution prepared by condensation of polyformaldehyde and phenylacetone in a water-free environment with a nickel catalyst is catalytically hydrogenated, not only the hydrogenated aldehyde ketone resin with stable hydroxyl value and extremely low colority is effectively obtained, but also the free formaldehyde content in the hydrogenated aldehyde ketone resin is effectively reduced, and the wide applicability of the hydrogenated aldehyde ketone resin in high-end coatings, adhesives and electronic materials is improved.

This utility model provides a combined external scaffolding ladder, belonging to the field of ladder technology. It includes a first ladder, a second ladder, a third ladder, and two hooks. The top of the first ladder is provided with a first hinge, and the bottom of the second ladder is provided with a second hinge. The first hinge and the second hinge are hinged together by a pin to form a folded shape. Angle steel limiting connectors are detachably provided on both sides of the top of the first ladder. The third ladder is movably located in front of the first or second ladder. The top ends of the two square tubes of the second ladder are provided with a first pair of connecting pipes, and the top ends of the two square tubes of the third ladder are provided with a second pair of connecting pipes identical to the first pair of connecting pipes. The two hooks are detachably provided on the angle steel limiting connectors, the first pair of connecting pipes, or the second pair of connecting pipes. This invention solves the problems of inconvenient assembly and disassembly in the prior art, and the fact that hooks or anchor points are usually only provided on one ladder section, making it impossible to flexibly match new support structures and reducing overall stability.

The utility model discloses a kind of sealing layer and windowing integrated deflector device, including windowing milling cone, deflector, support slip hydraulic assembly, hand-off sub, permanent packer sequentially connected from top to bottom;Support slip hydraulic assembly includes deflector anchoring slip and deflector support slip;The upper end of hand-off sub is connected with the lower end of deflector support slip by screw thread;The lower end of windowing milling cone is connected between the upper end of deflector by pin;The upper end of deflector is communicated with capillary tube;Deflector, support slip hydraulic assembly, hand-off sub and permanent packer are interconnected between each other.Utilize the utility model, sealing packer, deflector, windowing milling cone can be realized to be placed in place one time, can avoid conventional deflector process cumbersome, construction time is long, cost is high and prone to accident etc.

The utility model relates to oil and gas well packer tool technical field, concretely is a kind of extruded rubber tube single slip bridge plug, including push cylinder, and push cylinder is fixed with the release lever;Release lever outer circumferential surface is sequentially arranged with central tube, slip seat and lower joint;Lower joint is fixedly connected with release lever by shearing pin;Central tube includes the connecting section and conical structure section that are sequentially arranged in axis direction, and connecting section is butted with push cylinder;Slip seat one end is set on conical structure section, and other end is fixed with lower joint;There is step surface between connecting section and conical structure section, and step surface and conical structure section are set with rubber tube;Release lever outer circumferential surface is also set with connecting sleeve, and connecting sleeve is screwed with central tube by its threaded connecting section, and is clamped with lower joint by its clamping section.The central tube structure of the utility model can make rubber tube and slip seat directly set on central tube, reduce the axial length of whole bridge plug, improve the adaptability of bridge plug in downhole limited space.

The application discloses a drainage tunnel maintenance stage people and vehicle anti-skid device and a mounting method, and relates to the technical field of water conservancy projects. The device comprises at least one anti-skid pad body and a side edge anchoring mechanism. The anti-skid pad body comprises an anti-skid wear-resistant layer, a buffer bearing layer and an anchoring and adhering layer. The lower surface of the anchoring and adhering layer is provided with an anchoring structure. The upper surface of the anti-skid wear-resistant layer is provided with anti-skid textures and a plurality of drainage grooves. The anti-skid textures are used for enhancing the friction coefficient of the upper surface of the anti-skid wear-resistant layer and can guide accumulated water to the drainage grooves. One end of the side edge anchoring mechanism is in abutment with the side wall of the drainage tunnel, and the other end is used for being connected with the side edge of the anti-skid pad body, so as to limit the displacement of the anti-skid pad body in the width direction of the bottom plate of the drainage tunnel and provide the anti-skid pad body with a compression force perpendicular to the bottom plate of the drainage tunnel. The application can realize the technical effects of multiple goals, such as large longitudinal slope anti-skid, efficient installation, environmental protection and pollution-free, and reusability.

The invention provides an MOF (Metal Organic Framework) composite catalytic material for removing VOCs (Volatile Organic Compounds) as well as a preparation method and application thereof. According to the MOF composite catalytic material for removing VOCs, modified cellulose is used as a three-dimensional structure carrier, MOF and a metal catalyst are firmly loaded in a cellulose network through an in-situ growth process, and a macroscopic composite catalytic material with hierarchical pores, high specific surface area and good mechanical stability is formed; the composite material shows excellent catalytic efficiency, cycling stability and recoverability in the fields of catalytic degradation of VOCs, air purification and the like, and has a good application prospect. The invention also provides a preparation method and application of the MOF composite catalytic material for removing VOCs.

The invention discloses a lap joint device and method for FRP rib winding, and belongs to the technical field of prestressed composite material application, the device comprises a sleeve, a clamping piece and a connector, the inner surface of the sleeve is provided with taper, the outer surface of the sleeve is provided with curvature radius, and the rear end of the sleeve is provided with internal threads; the clamping piece is composed of three piece bodies, the inner diameter is slightly smaller than the diameter of the FRP rib, and the outer surface is provided with taper to form taper difference with the sleeve. One end of the joint is in threaded connection with the sleeve; the lap joint method comprises the steps that the clamping piece wraps the FRP rib to be inserted into the sleeve and anchored, and lap joint is completed through connection of the connector and the lock chain. According to the lapping device and method for FRP rib winding, the structure is simple, anchoring is reliable, construction is convenient and fast, and the lapping device and method are suitable for FRP rib prestress winding engineering.

This utility model discloses a foundation pit monitoring device for foundation pit construction, relating to the field of building construction technology. The device includes a vertical insertion rod with a T-slot at its top. A T-shaped collar is movably inserted into the inner wall of the T-slot. A horizontal connecting rod is fixedly connected to one end of the T-shaped collar, and a liquid level monitoring sensor is fixedly connected to the end of the horizontal connecting rod away from the T-shaped collar. This utility model achieves locking through the sliding connection between the T-shaped collar and the T-shaped positioning block, and the right-angle insertion between the vertical insertion rod and the vertical slot, both using tolerance fits. A single person can complete the assembly of the device within minutes, improving efficiency by 90% compared to traditional bolt connections, making it particularly suitable for rapid deployment in emergency monitoring scenarios.

This utility model relates to the field of thermal insulation wall technology, specifically disclosing a connection structure for thermal insulation walls, including a sleeve. A first protective plate is provided at the right end of the sleeve, and a second protective plate is fixedly connected to the left side of the sleeve. A threaded rod is slidably connected inside the sleeve, with a tapered head threaded to one end of the threaded rod. An expansion sleeve is slidably connected to the outer wall of the threaded rod. By setting multiple levels of expansion sleeves, appropriate sleeves can be flexibly selected for expansion anchoring according to different foundation wall environments. When facing dense walls, a suitable sleeve can be selected to achieve a stable connection; when encountering loose walls, a higher-level sleeve can be used to enhance the interlocking effect. This structure enables the connection structure to maintain reliable anchoring in various wall environments, effectively improving the adaptability and stability of the thermal insulation wall connection, expanding the application range of the connection structure, and meeting diverse installation needs.

The invention discloses a shape parameter determination method of a deep sea air storage bag, the air storage bag and a deep sea flexible air storage device. The deep sea air storage device comprises the air storage bag, a two-way control valve and a coupling umbrella-shaped tensioning type anchoring mooring system, wherein the air storage bag is designed based on a natural curve and the circumferential pressure of the air storage bag is 0; a net-shaped reinforcing rib is attached to the outer portion of the air storage bag and connected with the annular tightening reinforcing ring. The annular tightening reinforcing ring is positioned on the seabed through the umbrella-shaped tensioning type mooring system; by designing the zero-pressure air bag based on a natural curve of deformation, uniform stress of the flexible air bag can be realized, and large size is realized. The large size of the deep sea flexible air bag can be further achieved through the flexible air bag reinforced through the net-shaped reinforcing ribs.

The invention relates to the technical field of medical instruments, in particular to a bladder irrigation device for nursing, comprising: a portable box, one side of which is rotatably connected with a box cover; the mounting plate is fixedly connected to the interior of the portable box; the three-cavity catheter is arranged at the position of the portable box and used in cooperation with the portable box, and the upper end of a flushing pipe of the three-cavity catheter is communicated with a normal saline bag; the two peristaltic pumps are symmetrically and fixedly mounted on the two sides of the mounting plate respectively and used for extruding and pushing a flushing pipe and a drainage pipe of the three-cavity catheter. The two symmetrically-arranged peristaltic pumps are adopted to drive the flushing pipe and the drainage pipe of the three-cavity catheter respectively, according to the flushing requirement, the hydraulic power unit is adjusted and controlled to flexibly adjust and control the pressing and releasing states of the pump cores to the pipeline, and the controllable operation of independent pressurization in the flushing and drainage process is achieved; the system is suitable for various nursing scenes such as wards, emergency treatment and families, and the treatment safety and efficiency are improved.

This utility model relates to a vertebral anchoring and positioning reaming device, comprising: a working sleeve, which includes a sleeve body and a first cylindrical channel disposed within the sleeve body and extending axially; the lower end of the sleeve body has an arc-shaped serrated structure surrounding the end face of the first cylindrical channel; and an eccentric reamer for insertion within the first cylindrical channel, comprising a cylindrical drill rod, a second cylindrical channel disposed within the drill rod, and a drill bit disposed at the lower end of the drill rod and connected to the second cylindrical channel; the second cylindrical channel and the central axis of the drill rod are not on the same straight line. Compared with the prior art, this utility model has advantages such as reliable anchoring and precise bone removal.

The invention provides a method for preparing disproportionated rosin. The method comprises the following steps: a raw material pretreatment stage, a clarification and separation stage, a primary reaction stage, a catalytic disproportionation stage and a post-treatment stage to obtain a disproportionated rosin product. According to the method, three-step chemical modification of the porous ceramsite carrier is combined with a stepped temperature control strategy, so that the content of dehydroabietic acid in a disproportionated rosin product is increased, abietic acid residues are reduced, meanwhile, the stability of the catalyst is effectively improved, and the technological process is simplified.

The invention discloses a hole transport self-assembly material with a novel anchoring group, a preparation method of the hole transport self-assembly material, a perovskite solar cell and a preparation method of the perovskite solar cell. According to the hole transport self-assembly material, tropolone serves as an anchoring group, tropolone has a unique seven-membered ring structure and an enol-ketone tautomerism characteristic, keto groups and enol hydroxyl groups in molecules can form a stable bidentate coordination structure with a substrate, and a good anchoring effect is achieved. And energy level alignment and formation of a facing stacking structure are facilitated, so that charge transfer among molecules is facilitated. Experimental data show that the preparation method of the hole-transport self-assembly material provided by the invention is simple, a dopant does not need to be added, the cost is low, byproducts in the synthesis process are few, separation and purification are easy, the hole-transport self-assembly material is applied to a perovskite solar cell, and the hole-transport self-assembly material can be applied to the perovskite solar cell. The photoelectric conversion efficiency of 22.35% or above and the high open-circuit voltage (Voc) of 1.10 can be obtained, charge coupling is weak, and the method has wide application prospects.

A rigid tube and foundation assembly for a floating wind turbine. The upper end of the rigid tube is fixedly connected to the wind turbine tower or integrally formed, and the lower end is connected to an anchoring foundation via a flexible anchor chain. The length of the rigid tube is greater than half the height from the floating platform to the wind turbine hub. The foundation assembly includes the aforementioned rigid tube and the anchoring foundation, which is connected to the lower end of the rigid tube via a flexible anchor chain. This invention utilizes the lever principle and, through reasonable design of the rigid tube length, significantly reduces the tensile force borne by the anchoring point, thereby reducing the load-bearing capacity requirements of the anchoring foundation and improving platform stability. This invention has a simple structure and low cost, and is particularly suitable for floating wind turbines in deep-sea and extremely soft seabed conditions.