135results about How to "Guaranteed structural performance" patented technology

The invention relates to a semi-submersible vessel designed to operate in harsh environment. The vessel has a twin-hull pontoon structure that supports four corner caissons extending vertically from the pontoons above an operational draft of the vessel. A pair of slender parallel horizontal braces connects each pair of opposing caissons, the braces extending in a general plane perpendicular to longitudinal axes of the pontoons. One of the pair of braces is secured between the forward columns and another of the pair of braces is secured between the aft columns. The braces reduce spreading and torque-induced forces acting on the columns, while not substantially increasing water plane area of the vessel. Each brace has an internal 'redundancy' feature, being divided into two independent watertight compartments to continue providing buoyancy to the structure if one of the compartments is breached. Station keeping is accomplished with a full dynamically positioned system consisting of a plurality of thruster assemblies mounted on the starboard and port sides of the pontoon hull.

The invention discloses a hyperspectral image classification method based on local cooperative expression and neighbourhood information constraint, and is mainly used for solving the problem of high computation complexity in the prior art. The hyperspectral image classification method comprises the following realization steps of: (1) forming a neighbourhood matrix by M samples in a neighbourhood of a hyperspectral image tested sample and a tested sample; (2) forming a dictionary by all training samples, and calculating a cooperative expression coefficient matrix of the neighbourhood matrix by the dictionary; (3) calculating 12 norms of each row of the coefficient matrix, selecting N atoms from the dictionary according to large N row marks of the 12 norms to form a sub dictionary, and calculating a cooperative expression coefficient of the tested sample by the sub dictionary; (4) dividing the cooperative expression coefficient and the sub dictionary into n parts according to the number of every class of training samples; and (5) calculating and comparing a residuals between the tested sample and each reconstruction of the n parts, wherein a class mark of the tested sample is corresponding to a subscript of the minimum residual. According to the hyperspectral image classification method disclosed by the invention, the local cooperative expression is used, thus reducing the quantity of the atoms and reducing the computation complexity; and the hyperspectral image classification method can be used for solving the problem of hyperspectral image classification.

The invention discloses a large-scale image retrieval method. The method comprises the steps of image feature extraction, Hash function projection vector learning, Hash function offset learning, image feature dimensionality reduction, image feature encoding and image retrieval. By adopting the method, a large scale of images can be retrieved rapidly. Firstly, the discrimination among codes is enhanced by learning a discriminant Hash function, thereby better distinguishing different types of image features; secondly, the image features are subjected to dimensionality reduction and encoding by using a Hash function, thereby lowering the storage demand of the image features and the computation overhead of a retrieving process. By adopting the large-scale image retrieval method, large-scale image retrieving is realized efficiently and accurately, thereby achieving a high application valve.

The invention discloses a tower frame door opening of a wind generating set and a design method of the tower frame door opening; the tower frame door opening consists of two straight line segments and a curve segment according to shape, and the curve segment consists of more than three circular arcs with different diameters. The thickness of a door frame of the tower frame door opening is 1.15 to 1.17 times of the thickness of a tower tube wall preferentially, the length of the door frame along the radial direction of a tower tube is 4.5 to 5.5 times of the thickness of the door frame preferentially, and the length of the door frame at the central height position of the door opening, which extends out of the tower tube wall, is about half of the length of the door frame along the radial direction of the tower tube. The actual design process of the tower frame door opening comprises an overall data design of a door frame section, a door frame section modeling, a stress concentration factor IIW (International Institute of Welding) interpolation calculation and the like. Firstly, obtain an optimized parameter of the shape of the curve segment at the door opening, secondly, based on the optimized parameter, perform a further optimization to a size parameter of the door frame. The tower frame door opening increases the mechanical property index and reduces the impact of the existing door opening on a tower tube structure.

The invention provides a combined column formed by embedding round steel tubes filled with recycled concrete in a multiple-cavity steel pipe filled with concrete and provided with batten plates. The combined column comprises a polygonal steel pipe (1), an inner partition board (2), normal concrete (3), the round steel tubes (4), recycled concrete (5) and the batten plates (6), wherein the polygonal steel pipe is divided into multiple small cavities through the inner partition board; the restriction effect of steel plates on the core concrete is improved, so that the concrete is in a three-dimensional pressed state highly, therefore, the concrete strength is improved greatly, and the plasticity and toughness of the concrete are improved remarkably; meanwhile, due to the arrangement of the inner partition board, the stiffness, bearing capacity, ductility and seismic capacity of the whole component are improved to a certain extent; the round steel tubes have the stronger effect of a hoop, so that the influence on stress performance caused by degradation of recycled concrete material performance is reduced even eliminated, the application of the recycled concrete is popularized, and meanwhile, the structural performance is ensured; under the earthquake reciprocating effect, the earthquake energy is consumed through the mutual shearing of the batten plates and the concrete, so that the seismic performance is improved.

The invention provides a replaceable energy consumption connecting assembly for connecting a fabricated frame beam column. According to the technical scheme, a replaceable energy consumption assembly is arranged at the connecting position of the fabricated frame beam column and consists of an energy consumption steel rod, a constraint part and a connecting part, one end of the replaceable energy consumption assembly is connected with a node anchor steel bar embedded into the column, and the other end of the replaceable energy consumption assembly is connected with a beam-end longitudinal steel bar embedded into a beam. Under an earthquake effect, the energy consumption steel rod yields prior to other members and parts and utilizes plastic hysteresis to consume earthquake energy. The replaceable energy consumption connecting assembly is used for connecting the fabricated frame beam column, can induce the plastic damage of the structure in a middle earthquake and a large earthquake to be concentrated on the energy consumption steel rod, the damage of abeam column member can be avoided while the seismic ductility of the structure is improved, and the structure can be rapidly repaired after the earthquake in a simple energy consumption part changing mode, so that the structure repair efficiency after the earthquake is remarkably improved. The application of the replaceable energy consumption connecting assembly meets the industrialization development requirements of buildings.

The invention discloses a filling and reinforcing method for processing complicated goafs. The method mainly includes grouting hole position selection and grouting pressure control, is combined with the filling method, and adopts diagonal grouting holes, safety risks of direct construction on the goaf ground surface are avoided, damages to integrities of other rocks on the upper portion are reduced, and stability and structuration of the goaf are guaranteed better; diagonal filling is adopted, reinforcement is performed gradually, the entire goaf is filled, bearing capacity of the entire goaf is improved, and strength requirements of the roof is guaranteed during seam mining; the interval grouting method and the manner of thinning firstly and thickening later are adopted, the fluency and filling rate of grout in subsided rocks are guaranteed, grout concentration is changed while accelerator is added properly, and the filling and reinforcing effect of the entire goaf is improved ultimately; the processing effect of filling and reinforcing is significant to the complicated goafs which have low mine rock integrity and which are still mined as required.

The invention provides wood-based carbon foam and a preparation method thereof, a cathode electrocatalyst, a cathode and a metal-air battery, and relates to the technical field of batteries. The preparation method comprises the following steps: mixing lignin-removed wood with a first solution, carrying out solid-liquid separation to obtain a wood precursor, then removing air in the wood precursor, carrying out low-temperature curing and freeze drying to obtain wood-based foam, and pyrolyzing the wood-based foam in an inert atmosphere to obtain wood-based carbon foam; wherein the wood subjected to lignin removal has a certain porosity, meanwhile, the original structural property of the wood can be kept, transition metal salt and heteroatom compounds can conveniently enter pore channels of the wood, and subsequent doping of the transition metal salt and the heteroatom compounds is facilitated; furthermore, the graphitization degree of the wood-based carbon foam can be improved by adding the transition metal, so that the electro-catalytic performance of the wood-based carbon foam is improved; and by adding the nitrogen-containing compound, the structure of the wood-based carbon foam is effectively changed, the alkaline site on the surface of the wood-based carbon foam is increased, the hydrophilicity of the wood-based carbon foam is enhanced, and the wood-based carbon foam shows electro-catalytic performance.

The invention belongs to the technology of composite material structure forming process, and relates to a manufacturing method for a pre-buried fiber grating composite material laminated plate. By utilizing the characteristic that a high-temperature fiber is good in storage of coating layer and better in tenacity under the conditions of high temperature and high pressure, the high-temperature fiber is combined with an ordinary fiber grating, the ordinary fiber grating and a portion of the high-temperature fiber are pre-buried in a composite material pre-forming structure, so that the defect that the fiber is easily broken during the demolding, transporting and processing process can be effectively avoided under the precondition that the sensing function of the grating is guaranteed and the structural performance of the composite material is guaranteed, and the survival rate of the pre-buried fiber grating is improved.

A preparation method of hollow fiber multihole biologic titanium material belongs to biotechnology field. The invention includes steps: (1) wrapping titanium or titanium alloy fiber on a compact core rod, shaping; (2) putting the core rod wrapped with titanium or titanium alloy fiber in a mould, compacting by a hollow pressure head having inner diameter equal to diameter of the compact core rod, keeping load under load pressure, removing the mould and the core rod to get hollow multihole rods or columns with required length and porosity; (3) putting multihole titanium rods or columns compacted as body, sintering in vacuum or argon atmosphere to get hollow fiber multihole biologic titanium material. The method of this invention is simple, can get slim hollow fiber multihole biologic titanium material having optional ratio of length and diameter, fibre distribute uniformly, surface is flatten via shaping; good controllability of central cavity size, aperture and porosity, simple preparation method, fast speed, high rate of finished products, low cost.

The invention relates to a cab design method based on a cab sound reduction index analysis. The cab design method comprises the following steps: (1) establishing a CAD (Computer-Aided Design) model of a cab assembly, carrying out mesh generation on the CAD model, and establishing a finite element model of the cab assembly; (2) based on the finite element model of the cab assembly, establishing a cab internal sound field and a cab external sound field; (3) according to the shape of a sealing strip in a current design drawing, establishing a finite element model of the sealing strip structure, and carrying out nonlinear static compression on the sealing strip according to a set amount of compression; (4) establishing a sound-solid-sound three-domain coupling model; (5) computing the sound reduction index of the cab; (6) judging whether the sound reduction index of the current cab meets the design requirement, if yes, taking the current design drawing as the final structure output of the cab, and otherwise modifying the shape and the amount of compression of the sealing strip in the design drawing, and returning to the step (3). Compared to the prior art, the cab design method disclosed by the invention has the advantages of reducing the internal noise of the cab, increasing the sound reduction index of the cab, improving the sealing performance, and the like.

The invention discloses a transfer trolley with a fork and a working method of the transfer trolley, and relates to the technical field of cargo transferring. The transfer trolley comprises a trolleybody, two guide tracks, walking devices, a height lifting device and a telescopic fork, the two guide tracks are parallelly arranged, the trolley body is slidably installed on the guide tracks, and the walking devices are arranged at four corners of the trolley body. The walking devices comprise first driving pieces and walking wheels, the walking wheels are rotatably connected with the trolley body, the first driving pieces are installed on the trolley body, the first driving pieces are in driving connection with the walking wheels to drive the trolley body to move along the guide tracks, thetelescopic fork is installed on the trolley body, the telescopic direction of the telescopic fork is perpendicular to the operation direction of the trolley body, and the height lifting device is arranged in the trolley body to drive the telescopic fork to move back and forth in the height direction of the trolley body. The transfer trolley with the fork indirectly adjust the height difference between the telescopic fork and the bottom of a truck by controlling the height lifting device, so that the transformation of the bottom of the truck is avoided, the structure of the truck is maintained, and the structural performance of the truck is ensured.

The invention discloses a plasma arc-assisted MIG material increase manufacturing method for an aluminum alloy structure, and belongs to the technical field of 3D printing. The method includes the steps that an aluminum alloy substrate is selected at first; then a welding wire with the diameter being 1.2mm-1.6mm is selected; the relative position among a plasma arc nozzle, the aluminum alloy substrate and an MIG welding gun is determined, wherein the spacing range between the plasma arc nozzle and the aluminum alloy substrate is 5mm-10mm, the spacing range between the plasma arc nozzle and the MIG welding gun is 4mm-10mm, and the spacing range between the aluminum alloy substrate and the MIG welding gun is 10mm-15mm; the current range of a plasma arc is 40A-100A; the current range of the MIG welding gun is 100A-160A; and the current ratio range of the plasma arc to the MIG welding gun is 0.4-0.8. By the adoption of the method, stability is high, the heat input amount and heat-affected zone width can be effectively decreased, forming reliability is improved, and high-quality material increase manufacturing forming of the aluminum alloy structure can be facilitated.

The invention discloses a thin-wall internal-mould large-thickness hollow floor plate comprising a layer of totally-closed core pipes in circular pipe shapes, reinforcing meshes and pouring concrete, wherein the reinforcing meshes are respectively arranged above and below the layer of core pipes; a pressure pipe reinforcing bar is tightly close to and surrounds each core pipe, and a row of vertical anti-floating reinforcing bars are arranged at intervals of every 2-4 core pipes; and the pouring concrete is filled among the core pipes, the reinforcing meshes and the pressure pipe reinforcing bars and on the upper surface of the upper reinforcing mesh. The thin-wall internal-mould large-thickness hollow floor plate is in a double-layer reinforcing bar structure, the core pipes are positioned in the middle of the pouring concrete to form a hollow structure so as to become a permanent core mould, and the problems of fixation and floating of the core pipes in the concrete pouring process are solved through the structure. The invention has the advantages of fast construction, convenient installation, heat insulation and good sound insulation performance, can effectively reduce the self weight, correspondingly decreases girders, columns and walls which support the floor plate and foundation loads and greatly reduces the quantity of reinforcing bars as structural members.

A production method of a totally-coated metal composite pipe is technically characterized by including the steps of hermetically nesting a titanium tube, a steel tube and another titanium tube, connecting titanium heads to two ends of the steel tube in a threaded manner, and welding the inner titanium tube and the outer titanium tube on the titanium heads to ensure the steel tube is completely coated with titanium integrally; performing rolling, combining, rounding, straightening, deheading and sizing to obtain a finished product. According to the method, the totally-coated metal composite pipe is manufactured by a cold-rolling method. In terms of oil exploitation, chemical industry, fine chemicals, heat exchangers and marine pipelining, the composite pipe is completely coated with the titanium to keep properties of the titanium, product strength is guaranteed by using a low-cost base steel tube as a structural portion, the titanium heads at two ends can be connected by welding, and a screw thread can also be made for mechanical connection. The totally-coated metal composite pipe has the advantages such that the performance is high, the cost is low, the service life is long, and applicable range is wide. The production method is insusceptible to seasons and free of environmental pollution, and production scale and product specification are controllable.

The invention provides a buckling-restrained brace combined type embedded part construction method. A buckling-restrained brace combined type embedded part is adopted for construction, and the buckling-restrained brace combined type embedded part comprises buried part and a buried part locating component; the buried part comprises an upper plate, a lower plate, a web and a stud; the buried part locating component comprises a screw, a limiting thread sleeve, a locating adjustment nut and a gasket; the construction method mainly comprises the steps of formwork installation, buried part placing,main structure steel bar binding, buried part locating through the buried part locating component, concrete pouring and the like. According to the method, construction is convenient, the work efficiency is improved, the cost is reduced, and the problems that in the prior art, after buckling-restrained brace embedded parts are arranged on the main reinforcement and stirrups of the building main structure, binding construction is difficult, buckling-restrained brace embedded part locating, adjusting and reinforcing are difficult, deviation is likely to occur, buckling-restrained brace embedded part installation is time consuming and labor consuming, and the construction period is prolonged can be effectively solved.

The invention relates to a regenerated concrete shear wall provided with a cross reinforcement conversion layer, which belongs to shear wall structure, wherein the lower part of the shear wall adopts common concrete, and the upper part of the shear wall adopts regenerated concrete; the thickness of the intermediate conversion layer is 3 times that of the shear wall, and an X-shaped reinforced sway brace is arranged inside the intermediate conversion layer; and the reinforced sway brace is connected with a reinforcement mat of the shear wall, and a hidden brace is formed inside the concrete shear wall. The regenerated concrete shear wall provided with the cross reinforcement conversion layer gives full play to the advantages of two types of concrete, and utilizes a regenerated concrete structure to optimize the structural design and guarantee the structural performance. The lower part of the shear wall with larger shearing force adopts the common concrete with stable performance, and the upper part of the shear wall with smaller shearing force adopts the regenerated concrete with slightly poor performance. A cross reinforcement is arranged on the conversion layer of which the stiffness is suddenly changed, so that shearing resistant slippage between different concrete layers can be prevented, and simultaneously variation of the shearing resistant bearing capacity of the shear wall has a transitional process.

The invention provides a multipoint geostatistics-based discrete fracture modeling method, which combines multipoint geostatistics modeling with a discrete fracture modeling method, and comprises thefollowing steps of: establishing a training image of multipoint geostatistics simulation consisting of discrete fracture pieces; representing the discrete fracture pieces by convex quadrilateral surface elements, representing the spatial configuration relationship of the fractures by data events formed by the fracture pieces, and calculating the similarity of the fracture piece data events in a manner of overall scaling of the fracture pieces and weighting of morphological parameters of the fracture pieces; and according to a sequential method, adopting a direct sampling mode to extract an appropriate crack mode from a training image to an actual model. According to the method, the structural property of crack space distribution can be guaranteed, the description of the crack scale is alsoreflected, and the configuration relationship of underground cracks of different scales in space can be objectively reproduced.

The invention provides an inorganic combined box body which is used for hollow floor filling and has light weight and simple manufacturing and a manufacturing method thereof; wherein the surface of the box body is difficult to be cracked or penetrated. The combined box body of the invention comprises a light solid box body and a hard shell coated outside the light solid box body; wherein the hard shell is a hard inorganic composite layer which is formed by the way that a fabric containing at least one fiber mesh and cement paste or cement plaster are mixed with glue used in construction as well as materials of mountain flour, mineral powder, slag or coal ash. The invention has light total weight, deformation, broken bit falling and cracking are difficult when in construction, water absorption is low, besides, structure is simple, manufacturing method is simple, and manufacturing cost is low, thus being applicable to pore-forming filing of various hollow floor system.

The invention relates to a color steel tile photovoltaic integrated structure which comprises corrugated color steel tiles and a photovoltaic film plate, the corrugated color steel tiles are rectangular, two sides of each of the corrugated color steel tiles in the long side direction are wavy curved surfaces, and the middle of the corrugated color steel tile is a plane. The structure has the advantages that a color steel tile and photovoltaic integrated structural form is adopted, the original structural performance of a roof is kept, the problem that water leakage often occurs in a built BIPVis solved, a system is simple in structure and convenient to install, and the photovoltaic construction period is shortened; through connection structures that corrugated curved surface structures ofthe corrugated color steel tiles are overlapped with one another, adjacent corrugated color steel tiles can be conveniently positioned and connected and are fixed to highest positions of wavy curvedsurfaces of the corrugated color steel tiles through self-drilling screws, and pressing force brought by elastic deformation of the wavy curved surfaces of the corrugated color steel tiles is utilized, so that better fixing and locking are achieved; the rectangular short edges of the adjacent corrugated color steel tiles are connected in a covering mode, and the corrugated color steel tiles on anupper portion cover the corrugated color steel tiles on a lower portion.

The invention provides a composite material connecting structure for a railway vehicle and a forming method. The structure comprises a first top plate skin, a second top plate skin, a main beam carbonplate and a carbon fiber cover plate, wherein the first top plate skin and the second top plate skin are glued on the top surface of the main beam carbon plate; the first top plate skin is spliced with the second top plate skin; at least one row of holes located in the two sides of the splicing position are formed in the top face of the main beam carbon plate; the first top plate skin is providedwith at least one row of first through holes in one-to-one correspondence with the at least one row of holes in one side; the second top plate skin is provided with two rows of second through holes in one-to-one correspondence with the at least one row of holes in the other side; the first top plate skin and the main beam carbon plate are riveted with the corresponding holes through the first through holes, and the second top plate skin and the main beam carbon plate are riveted with the corresponding holes through the second through holes; and the carbon fiber cover plate is arranged on theouter surface of the splicing position of the first top plate skin and the second top plate skin in an adhesive covering mode. The connecting structure can adapt to connection of rail vehicle composite materials, and the air tightness and the structural strength of connection can be guaranteed.

An embedding and sintering method for production of ceramsite from raw materials of red mud and tile waste belongs the technical field of ceramsite. The method is characterized by comprising the steps of: preparing raw materials containing 5-25% of red mud, 13% of tile green compact waste, 10-20% of polished tile waste, 25% of tile edging material, 10% of kaolin and 17-37% of quartz; milling for 2 h, drying the slurry, and producing the obtained powder through a pelletizer or manual way into raw ceramsite; mixing the raw ceramsite with an embedding filler in the mass ratio of 0: 1 to 0.4: 1, wherein the embedding filler is a mixed pellet containing quartz and magnesium oxide in the mass ratio of 1:0-5:1; sintering at 1170 DEG C for 15 minutes; cooling in the by furnace; and screening the embedding filler to obtain ceramsite using raw materials of red mud and tile waste. The method uses a large amount of red mud and tile waste material; the embedding filler after sintering and screening is reusable; and the obtained ceramsite using raw materials of red mud and tile waste has uniform granularity, high intensity and adjustable density.

The invention discloses a continuous ion exchange method for separating lithium from salt lake brine. The method comprises the following steps that a feeding flow rate is controlled, the salt lake brine is fed into a first adsorption zone of an ion exchange column and a second adsorption zone of the ion exchange column, and tail liquid containing lithium and other hetero-ions adsorbed by the first adsorption zone is collected to serve as a liquid ejection raw material; lithium-poor brine tail liquid adsorbed by the second adsorption zone is collected by means of an adsorption discharge pipe and returns to a salt pan; a feeding flow rate is controlled, the liquid ejection raw material is fed into a liquid ejection zone of the ion exchange column to conduct a liquid ejection process, and the ejected tail liquid is used for cyclic adsorption; and a feeding flow rate of a desorption medium is controlled, a desorption solution medium is fed into a desorption solution zone of the ion exchange column for desorption, desorbed tail liquid is collected, and an obtained desorption solution is taken as a product solution. According to the method, a separation process of lithium is realized by adopting simple steps, and the method has the characteristics of simplicity, easiness in operation and the like, and has a good application prospect.

The invention discloses a JSON format setting method of hydrological time series data. The method comprises the steps that time series attributes are classified according to the step length feature and interval feature of the time series attributes; expression of date and time abides by the standard GB / T 7408-2005 / ISO 8601:2000; all nominal attributes are sorted according to the order of the numbers of no-repeat values contained by the nominal attributes from few to more; a JSON object serves as a main structure, and the main structure comprises a key value pair of which the key names are nominal, timeseries and data respectively; different data subsets are screened out from original data according to values of the nominal attributes; converted JSON-format original hydrological time series data comprises information of the data values and time information of the data. The JSON format setting method has the following advantages that the total length of a data series is as small as possible through the efficient organization structure, and the network transmission efficiency is improved.

The invention discloses an autoclaved aerated concrete slab and a preparation method thereof. The autoclaved aerated concrete slab comprises a base material layer, a fiber layer, an autoclaved aeratedconcrete core layer, a heat insulation layer and an exterior facing layer which are sequentially arranged, a plurality of pre-buried pipes are arranged in the autoclaved aerated concrete core layer,the outer sides of connecting parts of the pre-buried pipes are connected with pre-buried components, the pre-buried components comprise limiting plates abutting against the connecting parts of the pre-buried pipes, limiting screw rods are arranged at the four corners of the limiting plates in a penetrating mode correspondingly, and mounting holes are formed in the sides, adjacent to the exteriorfacing layer, of the limiting plates. The preparation method comprises the steps of splicing of a reinforcing mesh and the pre-buried components, pouring, resting, cutting and the like. The problem that in the prior art, an autoclaved aerated concrete slab is is inconvenient for pipeline trough arrangement can be solved, the cost is low, the efficiency is high, and the application range is wide.

The invention provides a fabricated precast concrete pavement slab assembly, a pavement structure and a construction method of the pavement structure. The pavement slab assembly comprises a precast concrete pavement slab A and a precast concrete pavement slab B, grooves and pre-buried bolts are arranged on the side faces of the adjacent pavement slabs, connection is achieved through the fastening nuts, construction is fast, tight attachment between the pavement slabs and the base layer is achieved by grouting the bottoms of the pavement slabs, the connection requirement of the joints is met by grouting the joints between the pavement slabs, therefore, the structural performance of the precast concrete pavement structure in all directions is ensured. Thus, the technical problems that in the prior art, the inter-plate connecting process of the fabricated precast concrete pavement plate is complex and poor in effect, and the fabricated precast concrete pavement plate and the base layer cannot be tightly attached are solved, large-area and multi-section simultaneous construction can be achieved, meanwhile, the requirement for the flatness of the base layer is further lowered, and the construction quality and the construction efficiency are greatly improved.

The invention relates to a circulating current suppression system of a photovoltaic off-grid inverter, in particular to a data-driven and kernel-based countermeasure network control method, the invention relates to Circulating current suppression system for interleaved parallel inverter and belongs to the intersecting technical field of power electronics, big data technology and control theory, inparticular to the core-based countermeasure network photovoltaic off-grid inverter circulating current suppression system, including data acquisition system, controller system and execution system. Collect the corresponding data of the circulation in the data acquisition system, the algorithm carries on the data analysis and the processing according to the collected data in the controller system,constructs the kernel-based countermeasure network to carry on the data analysis modeling and the control, and finally forms the control instruction signal; Circulation current is suppressed in the execution system according to the control command signal. The invention can effectively suppress the interleaved parallel circulating current of the photovoltaic off-grid inverter, improve the efficiency of the photovoltaic system to a certain extent, and reduce the public nuisance of the power grid.

The invention relates to a laser welding method for a repairing penetrating defect of base metal. The method comprises the following steps that S1, the to-be-repaired defect of the base material is pretreated and machined into a groove weld joint with a wide upper portion and a thin lower portion; S2, the width of a weld joint lower groove is determined, if the width of the lower groove is greaterthan the diameter of a welding wire, at least one layer of convex weld welding are conducted on the two sides of the lower groove side by side in the length direction of the weld joint until the width of the lower groove is the same as the diameter of the welding wire, then priming layer welding is conducted on the weld joint between convex welds on the two sides, and if the width is smaller thanor equal to the diameter of the welding wire, the priming layer is directly welded; S3, multiple welding layers are superimposed and welded on the priming layer, a welding layer zone is formed, and the top of a welding layer block is lower than a weld joint upper groove; S4, a repair layer is superimposed and welded on the welding layer block, and the top of the repair layer is higher than the weld joint upper groove; and S5, the repair layer higher than the upper groove is ground, and thus the repair layer is flush with the upper groove.

The invention discloses a steel pipe concrete combined column. Holes are machined in the wall face of a steel pipe, reinforcing steel bars and constructional steel bars are mounted on the exterior of the steel pipe in the longitudinal direction, and meanwhile reinforcement stirrups are arranged on the periphery of the steel pipe at intervals. The reinforcement stirrups are connected with the reinforcing steel bars and the constructional steel bars in a bound or welded mode. Hooks are arranged at the two ends of tie bars, and the tie bars are hooked on the constructional steel bars of the outer sides of the holes after penetrating through the two corresponding opposite holes correspondingly. The tie bars are connected with the constructional steel bars in a bound or welded mode, and concrete is poured on the interior and the outer wall of the steel pipe. The concrete inside the steel pipe can communicate with the concrete outside the steel pipe through the holes in the side wall of the steel pipe, and meanwhile the tie bars can also fix the concrete, so that the phenomenon that the steel pipe is separated from the concrete due to shrinkage of the concrete in the steel pipe is effectively prevented, and the work performance of the combined column is ensured. The reinforcing steel bars and the reinforcement stirrups are longitudinally and transversely staggered to form a framework of the concrete of the outer wall of the steel pipe so as to fix the concrete to the outer wall of the steel pipe. The concrete of the outer wall has the heat insulation effect, thus the phenomenon that heat makes direct contact with the steel pipe can be effectively prevented, and the fireproof performance of the whole combined column is improved.

The invention relates to a backing plate for a roller kiln and also relates to a fireproof hard material. Main points of the technical scheme are as follows: raw materials comprise, by weight, 5-7 parts of a material A and 3-5 parts of a material B; the two materials are mixed, compacted and sintered to obtain the backing plate; the material A is powders and comprises, by weight, 20-30 parts of a high temperature resistant matrix, 30-45 parts of alumina, 5-15 parts of calcine talcum, 15-30 parts of clay, 0.3-0.5 part of sodium tripolyphosphate and 0.2-0.5 part of carboxymethylcellulose sodium; and the material B is granules and comprises, by weight, 75-80 parts of high temperature resistant matrix particles and 20-25 parts of cast bauxitic clay particles. The backing plate provided by the invention has advantages of short sintering period, low temperature and high production efficiency, is an energy-saving environmentally-friendly low-cost high-performance refractory material product, and has wide industrial applications.