42results about How to "Slow down scaling" patented technology

The invention relates to a Z-pin reinforced foam sandwich composite wind turbine blade and a manufacturing process thereof, belonging to the technical field of fiber composite reinforcing. The manufacturing process comprises the following steps: implanting Z-pin into a foam preform, and preparing a composite connection layer; laying an upper half shell and a lower half shell in a wind turbine blade mould, and implanting Z-pin into a connecting part of the lower half shell and the connection layer in the direction perpendicular to the shell; pouring a foaming material in a lower mould, and then closing an upper mould; after the foaming of the foaming material is finished, taking down the upper mould, implanting Z-pin perpendicular to the shell from the outside at a joint of the upper half shell and the upper half part of the connection layer, and then closing the upper mould; solidifying the Z-pin reinforced composite wind turbine blade. The manufacturing process provided by the invention has the advantages of obviously improving the connection strength and the fatigue resistance performance of the joint of the upper shell and the lower shell of the composite wind turbine blade, and avoiding the structural damage caused by ungluing of the upper and the lower shells, and the Z-pin is light in weight and high in strength, so that the requirement of the wind turbine blade for the material is met.

The invention relates to a thin-layer asphalt pavement overlaid with old cement concrete suitable for heavy-duty coal transportation. The cement concrete slab is provided with a rubber mastic high elastic stress absorption belt and a rubber mastic high elastic stress absorption belt. SBS modified macroporous LSAM-25 with a thickness of 6-8 mm is arranged on the top, and a SBS modified slurry seal layer with a thickness of 1 cm is arranged on the top of the SBS modified macroporous LSAM-25, and the top of the SBS modified slurry seal layer SBS modified AC-13 with a thickness of 4cm is set, and SBS is passed between SBS modified AC-13 and SBS modified slurry seal layer, SBS modified macroporous LSAM-25 and rubber mastic high elastic stress absorption belt The porosity of the modified emulsified adhesive layer connected with SBS modified macroporous LSAM-25 ranges from 18% to 22%. The pavement has excellent bearing capacity and high temperature stability, good anti-reflective cracking effect, long service life of the pavement, and can meet the needs of heavy-duty traffic such as coal transportation.

The invention discloses a Z-pin reinforced composite material wind power blade structure. The Z-pin reinforced composite material wind power blade structure comprises an upper half blade shell, a lower half blade shell and a main beam, wherein the upper half blade shell and the lower half blade shell are matched to form a blade cavity, the upper edge of the main beam and the inner wall of the upper half blade shell are tightly attached to form an upper connecting surface, the lower edge of the main beam and the inner wall of the lower half vane shell are tightly attached to form a lower connecting surface, Z-pins which have pinning and bridging functions and improve the connecting strength between the main beam and the upper half blade shell as well as between the main beam and the lower half blade shell are arranged at the connecting positions of the upper connecting surface and the lower connecting surface, and the part, located on two sides of the main beam, of the blade cavity is filled with foam. The Z-pin reinforced composite material wind power blade structure can obviously improve the layered rigidity of composite material laminated wood. A manufacturing method is simple. The Z-pin reinforced composite material wind power blade structure is high in designability, is easy to form overall and further has the advantages of being good in weight-reducing property, resistant to shearing, high in stripping resistance and small in damage to fibers.

The invention relates to the field of high-temperature functional ceramic coating materials, and particularly discloses a thickness-adjustable thermal insulation/infrared stealth composite coating. The composite coating is of a multi-layer stacked structure and sequentially comprises a metal bonding layer, a ceramic layer and an infrared low-emissivity layer from inside to outside, the ceramic layer is a lanthanum phosphate-hexaaluminate composite ceramic layer, and the infrared low-emissivity layer is a low-emissivity coating which is formed by taking Bi2O3-Al2O3-TiO2-Li2O-SiO2 series low-melting-point glass as a binding phase and taking silver as a conductive phase. A titanium alloy material with the surface coated with the coating and a preparation method of the titanium alloy materialare further provided. The heat insulation/infrared stealth composite coating has the characteristics of excellent thermal shock resistance and high-temperature infrared low emissivity; and the thickness of the coating can be regulated and controlled according to different actual application requirements, and the density and the heat insulation performance of the coating surface can be regulated.

The invention relates to a high temperature-resistant high strength stainless steel plate for a hearth plate and a production method thereof. The strength stainless steel plate for a hearth plate hasthe yield strength being greater than or equal to 30 MPa under the high temperature of 1200 DEG C, and comprises the following components in weight percent: 0.05-0.08% of C; 0.40-0.80% of Si; 1.00-1.60% of Mn; less than or equal to 0.010% of P; less than or equal to 0.010% of S; 0.02-0.09% of N; 10.0-12.0% of Ni; 22.00-24% of Cr; 0.10-0.50% of Mo; 0.02-0.05% of Nb; 0.040-0.090% of V; 0.01-0.04% ofTi; and the balance Fe and inevitable impurities. According to the invention, improvements are made from the component and the production method, the high-temperature strength of the hearth plate isimproved, and the service life of the hearth plate is prolonged.

The invention discloses a novel water erosion resistant composite coating structure. The novel water erosion resistant composite coating structure comprises a transition layer (3) disposed on a substrate (4) and a plurality of composite coating layers, wherein the composite coating layers are disposed on the transition layer (3) by physical vapor deposition. Each of the composite coating layers includes a metal Me soft layer (2) and a metal nitride MeN hard layer (1), wherein the metal Me soft layer (2) and the metal nitride MeN hard layer (1) are disposed in sequence from inside to outside. According to the novel water erosion resistant composite coating structure, due to the fact that a single-layer TiN and ZrN film layer has multiple inherent defects in the anti-erosion performance, thesingle-layer TiN and ZrN film layer is used as a ceramic hard film, the internal stress is generally larger in the preparation process, thicker deposition is difficult to achieve directly, and the single-layer TiN and ZrN film layer is arranged at the edge of a workpiece, so that the film layer is prone to cracking and falling off at a later time. When the thickness of the film layer is thinner,and the protection requirements of relevant components are difficult to meet by the anti-erosion performance of the film layer, so that a more effective measure is to adopt multilayer structure film layers in order to meet the engineering application requirements.

The invention discloses a contracting and hiding type cat amusing robot. The technical essential adopted by the invention lies in that the contracting and hiding type cat amusing robot comprises a bottom shell and an upper shell buckled on the bottom shell, wherein two or more groups of outlets located on the same horizontal plane are formed in the periphery of the upper shell, a driving mechanismis fixedly arranged in the bottom shell, two or more groups of cat amusing connecting pieces are connected to the driving mechanism, and the number of the cat amusing connecting pieces is equal to the number of the outlets; the driving mechanism can drive the cat amusing connecting pieces to expand and contract back and forth between the outlets, and the cat amusing connecting pieces can extend out from only one group of the outlets at the same time; each cat amusing connecting piece is detachably connected with a cat amusing flying object exposed to the corresponding outlet; and a PCB and one or more sensing elements which can control starting and stopping of the driving mechanism are arranged in the bottom shell, and the sensing elements are electrically connected with the PCB. The propof the pet toy can perform random contracting and hiding, can realize benign interaction with pets, and has strong interest and favorable entertainment effects.

The invention discloses a cleaning solution for removing calcium carbonate scale and a preparation method and application of the cleaning solution, and belongs to the field of chemical descaling. Thecleaning solution comprises, by mass, 3%-8% of phosphorus-free organic acid complexing agent, 10%-25% of phosphorus-free chelating agent, 2%-6% of penetration cosolvent, 0.05%-0.15% of corrosion inhibitor, and the balance water. The corrosion inhibitor is oleic acid imidazoline corrosion inhibitor and/or thiazole corrosion inhibitor. The penetration cosolvent is prepared by the following steps that anionic surfactant, polyols and clean water are added into a reaction still and heated to 30-50 DEG C, stirring is conducted for 20-40 minutes, sodium hexametaphosphate, sodium but and the clean water are added, the temperature is reduced to 15-25 DEG C, stirring is conducted for 30-50 minutes under the constant temperature conditions, and the penetration cosolvent is obtained; and the mass ratio of the anionic surfactant, the polyols to the clean water added for the first time is 1:10-20:20-30, the mass ratio of the sodium but, the sodium hexametaphosphate to the clean water added for the second time is 1:40-50:80-200, and the mass percent of the sodium but accounted for the penetration cosolvent is 0.16-0.3%. The cleaning solution is high in scale dissolving rate, good in scale inhibition effect, safe and environmentally friendly, and good in biodegradability.

The invention discloses a method for inhibiting the growth of gibberella saubinetii and reducing the toxins of wheat scab infected grains. The method comprises the following steps: inoculating gibberella saubinetii in the flowering stage of wheat, after completion of inoculation, immediately and respectively spraying a selenium preparation solution and clear water to inoculated wheat ears so as toobtain a treatment group and a control group, respectively counting the rate of diseased spikelets in the treatment group and the control group, carrying out harvesting, then measuring the toxin content of wheat grains, and comparing the disease efficacy of the treatment group and the control group so as to evaluate the prevention and treatment effects on wheat scab. The method provided by the invention can effectively inhibit the growth and toxin production of the gibberella saubinetii, reduces the susceptibility rate of the wheat scab and the toxin content of the wheat grains, can improve the nutritional value of the wheat through proper application and can promote the health of human, animals and plants.

The invention discloses a boom control method and system. The boom control method comprises the steps that a preset angular velocity value for stretching or retracting a boom is input and a controller controls the stretching and retracting speed of a piston rod of an oil cylinder according to the preset angular velocity value and further comprises the steps that the real-time angular velocity value for stretching or retracting the boom is detected and compared with the preset angular velocity value; when the real-time angular velocity value is larger than the preset angular velocity value, the controller controls the stretching and retracting speed of the piston rod to be decreased; and when the real-time angular velocity value is smaller than the preset angular velocity value, the controller controls the stretching and retracting speed of the piston rod to be increased. After the preset angular velocity value is input, the real-time angular velocity value can be controlled to be close to the preset angular velocity value so that the boom can rotate at a constant speed, accordingly, the rotating speed of the boom is controlled stably and accurately, high operability is achieved, linear following of given input can be achieved, and rapid correction can be achieved even if under the influence of external factors.

The invention relates to the technical field of nucleic acid amplification. In particular, the present invention relates to stem-accelerated isothermal nucleic acid amplification techniques. The present invention relates to a method using a stem primer which improves rapid and specific amplification of a test sample.

The invention discloses a global control method and device for damage fracture of an integral panel structure, and relates to the field of aircraft structure damage tolerance design, and the method comprises the steps: building a global damage parameter matrix of the integral panel structure; determining a control constraint; selecting a first group of parameters, and establishing a three-dimensional shell finite element model containing at least three rib integral wallboard structures according to the first group of parameters; simulating a crack propagation track by using a finite element method based on the reinforced area and unit, and obtaining a change curve of the stress intensity factor along with the crack length; according to the change curve, calculating the crack propagation life, the residual strength value and the weight under the first group of parameters; judging whether the crack propagation life, the residual strength value and the weight meet preset conditions or not; and if any one does not meet the preset condition, returning to the step of selecting a second group of parameters. According to the method and device, the crack propagation speed is delayed to the maximum extent, the damage tolerance performance of the whole wallboard is improved, and rapid iteration of optimization design is guaranteed.

The invention discloses a lightning current shunt with a self-locking device. The lightning current shunt comprises a lightning current shunt mechanism, wherein a flat spiral spring and a copper wovenbelt are arranged in the lightning current shunt mechanism; one end of the flat spiral spring is fixed on a housing of a lightning current shunt structure, and the other end of the flat spiral springis fixed on a main shaft connected with a reel; one end of the copper woven belt is fixed to the interior of the reel in the lightning current shunt structure, and the other end of the copper woven belt passes through the self-locking device fixed on the lightning current shunt structure; and the self-locking device can exert a counter-acting force onto the copper woven belt which tends to stretch in a swinging state, so that the stretching speed of the copper woven belt is reduced, and the flat spiral spring is in a stable state. The lightning current shunt with the self-locking device is simple in structure and novel in design. The service life of the flat spiral spring is prolonged.