198results about How to "Prevent reverse" patented technology

The invention relates to masonry mortar special for self-insulation walls, which is a powdery mixture and consists of the components with the following weight portions of 52-68 portions of cementing materials, 20-36 portions of gradation aggregates, 12-25 portions of vitrified hollow micro-pearl, 0.2-0.26 portions of redispersibility emulsion, 3-12 portions of thickener rheology agent, 0.05-0.3 portions of water retaining agent, 0.05-0.3 portions of anti-fissure strengthening agent and 0.012-0.035 portions of anti-entraining agent. The invention has the advantages of good water retention, lowheat conductivity, high mechanical strength, good flexible crack resistance, good waterproof performance, good dry shrinkage resistance, good fireproof performance, easy construction, high performance-price ratio, energy saving performance, etc.

The invention relates to an emergency power supply which comprises a shell body. A battery pack used for storing electric energy is arranged in the shell body, and an input end of the battery pack is connected with output ends of a charging circuit used for charging the battery pack and a solar panel input circuit. An output of the battery pack is connected with a large current output circuit used for outputting large currents when an automobile is started, and an externally connected battery intelligent detecting system is connected between the battery pack and the large current output circuit. The emergency power supply is convenient to charge, capable of outputting large currents for starting an automobile, and capable of accurately controlling current output.

The invention provides a burn-free coal-ash-based geological polymer high performance adsorbing material preparation method which comprises the following steps: a, preprocessing a solid raw material; b, preparing a base material, wherein solid waste coal ash containing rich aluminosilicate is utilized as the solid raw material, an alkali activator is utilized as a liquid raw material, and the solid raw material and the liquid raw material are evenly mixed to react at a temperature of 20 to 100 DEG C to form a base; c, forming a base material, i.e., forming the evenly-mixed solid and liquid raw materials into a base sample through granulation molding or casting molding or extrusion molding; d, maintaining the base sample; e, washing and drying. The method can save energy, is simple in preparation technology, can reduce production cost, can be used to produce a high performance geological polymer adsorbing material in a large scale, and the waste coal ash of coal-fired power plants is utilized as a raw material to prepare the adsorbing material at a room temperature; thus, the problem of coal ash stack and waste and the environmental problems caused by the coal ash stack and waste are solved, and industrial organic waste gas and waste water containing phenol can be treated in a mode of using waste to treat waste.

The invention discloses a water-soluble three-dimensional network type electrode binding agent, comprising a water-soluble polymer polyelectrolyte. Molecular chains of the polyelectrolyte contain active groups; the molecular chains of the polyelectrolyte are cross-linked and bridged by a cross-linking agent to form a three-dimensional network type molecular structure. The invention also disclosesa preparation method of the binding agent, an electrode piece prepared by utilizing the binding agent, and electrochemical devices. In the water-soluble three-dimensional network type electrode binding agent disclosed by the invention, the water solubility is good, the viscosity is adjustable, and the tensile strength and the Young modulus are controllable; in the carbon electrode piece prepared by the electrode binding agent, the mechanical property is good, the phenomenon of common material falling of the electrode piece can be avoided, the irreversible capacity is low in the first chargingprocess, the reversible capacity is high, and electrochemical devices such as lithium-ion batteries and super capacitors and the like with excellent circulating performance can be manufactured.

The invention belongs to the technical field of encapsulating materials, and discloses a low-shrinkage heat-conducting flame-retardant double-component condensed type organosilicone pouring sealant, and a preparation method and application thereof. The organosilicone pouring sealant consists of a component A and a component B, of which the weight ratio of (10:1) to (5:1), wherein the component A consists of the following raw materials in parts by weight: 100 parts of a base adhesive, 30 to 80 parts of a plasticizer A, 0.01 to 3 parts of a coloring material and 0.1 to 1 part of a curing accelerant; and the component B consists of the following raw materials in parts by weight: 80 to 300 parts of a crosslinking agent, 10 to 60 parts of a coupling agent, 0.5 to 1.5 parts of a catalyst and 100to 500 parts of a plasticizer B. The base adhesive consists of the following raw materials in parts by weight: 100 parts of liquid silicone rubber, 3 to 10 parts of reinforcing filler, 20 to 80 partsof heat-conducting filler, 20 to 100 parts of flame-retardant filler, 3 to 10 parts of a surface treating agent and 3 to 20 parts of functional filler.

The invention discloses an electric power line inspection LiDAR data automatic registration method based on tower characteristic points, and the method comprises the following steps: S1, extracting two stages of tower point cloud data, and extracting characteristic point clouds at corners of a tower through employing a random sampling consistency algorithm; S2, based on a principal component analysis method and a direction cosine rule, determining a corresponding relation between point cloud centroid coordinate systems of the two stages of towers, and solving an initial transformation matrix;S3, on the basis of initial transformation, adopting kd-based (kd-based) transformation; and carrying out fine matching on the tower characteristic points by using an iterative nearest point algorithmof tree optimized matching point search, obtaining a final transformation matrix, and carrying out spatial coordinate system conversion on the initial point cloud based on the target point cloud. According to the invention, under the condition that the electric power line inspection LiDAR data has data loss and lack of ground feature characteristics; The method comprises the following steps: extracting a tower area, extracting tower characteristic point cloud by utilizing a Ransac straight line fitting algorithm, calculating a transformation matrix by combining PCA coarse registration and ICPfine registration, and finally realizing transformation from an initial point cloud coordinate system to a target point cloud coordinate system.

The invention provides a feeding device for lead frame assembly. The device comprises: a conveying mechanism, which comprises a pair of conveying rails and a driving apparatus, wherein the driving apparatus is provided with a conveying disc in a sliding mode, the top of the conveying disc is provided with a plurality of parallel limiting grooves, and the top face of the rear section of each conveying rail is provided with a heightening strip; a storage mechanism, which is arranged at the front end of the conveying mechanism and used for stacking the frame trays upwards, wherein angle steel is located above the conveying rails, a gap is reserved between the bottom face of the angle steel and the conveying face of the conveying rails, the storage mechanism further comprises a pair of supporting seats, and at least two supporting blocks are arranged on the side wall, facing the middle of the conveying mechanism, of each side baffle, upper inclined surfaces are arranged above the front ends of the supporting blocks, the bottoms of the frame trays are provided with rectangular grooves corresponding to the supporting blocks and provided with ribs corresponding to the limiting grooves, and the ribs are in clearance fit in the limiting grooves; and a lifting mechanism, which comprises a pair of lifting blocks that move up and down in the vertical direction. The frame trays can be automatically output, labor is saved, and production efficiency is effectively improved.

The invention discloses a crane and a method and a device for correcting an inclination angle of a lifting hook of a double-winch system of the crane. An inclination-angle sensor is arranged on a cross beam on the inner side of the lifting hook; a control device controls the operation of a main winch system, so that the absolute value of the inclination angle of the lifting hook is larger than a preset angle value; the control device selects a synchronous control mode to lift the lifting hook, takes the absolute value of the inclination angle of the lifting hook and carries out differential operation; when the differential value of the absolute value of the inclination angle of the lifting hook is larger than a set threshold, the control device enables the inclination angle of the lifting hook acquired by the inclination-angle sensor to be multiplied by -1 for correction. The correcting device, the correcting method and the crane disclosed by the invention have the advantages that by automatic identification and correction on the installation direction of the inclination-angle sensor, the operation for guaranteeing the forward direction of the sensor by manual installation is avoided, the installation process of the sensor is simplified, the installation time of the sensor is saved, the problem of the backward direction in manual installation is solved, and the effectiveness and the reliability of synchronous control are ensured.

The invention provides a pulse power supply converter powered by a high-speed generator and a conversion method of the converter. The converter comprises a three-phase MOSFET rectifier. The three-phase alternating current end of the high-speed generator is connected with a voltage-stabilizing DC-DC converter and an auxiliary power supply through the three-phase MOSFET rectifier. The voltage-stabilizing DC-DC converter is connected with the pulse load through an output buffer capacitor Co, output of the auxiliary power supply is connected with a synchronous rectification control circuit and a current type control circuit, the synchronous rectification control circuit is connected with the three-phase MOSFET rectifier, and the current type control circuit is connected with the voltage-stabilizing DC-DC converter. Ripple voltage of a pulse load end is reduced by adding a large-capacity buffer capacitor Co to the output end of a voltage-stabilizing DC-DC converter, and current type controlis applied to the DC-DC converter to suppress pulsating power fed back to a generator end. A synchronous rectification control MOSFET is adopted to replace a diode, so that the efficiency of the three-phase rectifier is improved.

The invention provides a push-type dynamic continuous preparation method for titanium black powder. The titanium black powder is TiO powder, Ti3O5 powder, Ti4O7 powder, Ti5O9 powder, Ti6O11 powder, Ti7O13 powder, Ti8O15 powder or Ti9O17 powder. The push-type dynamic continuous preparation method comprises the following steps: (1) preparing raw materials; (2) mixing and drying; (3) sintering: introducing reducing gas or/and inert gas into a cooling chamber, a reaction chamber and a preheating chamber with the gas flow of 0.1-3 L/min, heating to enable the temperature of the preheating chamber to be a preheating temperature, heating to enable the temperature of the reaction chamber to be a reaction temperature to enable the reaction chamber to be in a working condition, successively feeding reaction boats loaded with the mixed powder at certain time intervals into a feeding chamber, and successively pushing the reaction boats to a discharging opening direction at a constant speed. The invention further provides a push-type dynamic continuous sintering device. Through the adoption of the preparation method and the sintering device, titanium black powder of which the purity is higher than 70% can be obtained, and continuous mass production can be realized.

The invention discloses an anti-aging compound rubber sealing strip. The anti-aging compound rubber sealing strip is prepared from, by weight, 50-200 parts of ethylene propylene rubber, 10-70 parts of fast extruding furnace black, 1-15 parts of indirect zinc oxide, 1-10 parts of antiager, 1-15 parts of paraffin oil, 1-10 parts of lubricant, 1-10 parts of vulcanizing agent and 1-8 parts of accelerant. The accelerant is triallyl isocyanurate and/or trifunctional acrylic ester. The invention further discloses a preparation method of the anti-aging compound rubber sealing strip. The anti-aging compound rubber sealing strip has the advantages of being long in service life, resistant to aging and pressure changes and stable in hardness, and the preparation method is simple and easy to operate.

The invention relates to the technical field of dental orthodontics, and specifically discloses an invisible appliance production method. The invisible appliance production method comprises the following steps of: providing a diaphragm for making an invisible appliance; arranging a layer of process film on the outer surface of the diaphragm; placing the diaphragm and one surface opposite to the outer surface provided with the process film on a dental model for film pressing to obtain the invisible appliance to be cut; performing laser cutting on the invisible appliance to be cut along a predetermined cutting path, wherein laser is incident from one side of the process film, the laser cuts through the process film and the diaphragm simultaneously, and the diaphragm and the process film arenot mixed at the cutting path; and removing the process film to obtain the invisible appliance. The invisible appliance production method solves the adverse effect on the quality of the appliance caused by smoke dust generated in the laser cutting process of the existing invisible appliance production.

The invention provides a method and a device of controlling the internal combustion engine. A first regulator is used to regulate the supply of fresh air into the internal combustion engine. A second regulator is used to regulate the recirculating mass of the exhaust gas. Through comparing a first rating and the real value of the fresh air flow, the value of the first adjustment parameter of the first regulator can be predetermined; and through comparing a second rating and the real value of the exhaust flow, the value of the second adjustment parameter of the second regulator can be predetermined.

The invention discloses a high strength, anti-aging natural rubber/nitrile rubber cable material. The raw material comprises the following components: natural rubber, nitrile rubber, precipitated silica, nano calcium carbonate, calcium sulfate whisker, zinc oxide, stearate, sulfur, 1,3-phenylene-di(1H-2,5-pyrrole-dione), 2-mercaptobenzothiazole thiazole parts, N-oxydisuccinic ethylenebis-2-benzothiazole sulfenamide, phthalate, di-n-octyl phthalate, dioctyl maleate, silane coupling agent and an antioxidant. The high strength, anti-aging natural rubber/nitrile rubber cable material disclosed by the invention is high in strength, and high in aging resistance, and the cable made from the material has good property and is long in service life, so that the cost is reduced.

A fan module includes a fan body and metal plates. The fan body has a fan seat, and the fan seat is provided with coupling holes. The metal plates enclose the fan body and expose an outlet side. The position assembly includes a position frame and position members. The position frame has an air outlet and is fixed on the outlet side. The airflow shielding structure includes shutter plates and a connection rod. One side of the shutter plates are pivoted at the position frame, and the shuttle plates are capable of turning simultaneously for opening and closing the air outlet so as to maintain the normal operation of the server fan.

The invention discloses a cable protective sleeve, and belongs to the technical field of cable materials. The cable protective sleeve is prepared from, by weight, 40-50 parts of EPDM rubber, 30-38 parts of acrylate rubber, 12-15 parts of fluorinated silicone rubber, 3-5 parts of a flame retardant, 6-10 parts of a vulcanizing agent, 1-3 parts of an ultraviolet absorber, 1-3 parts of a water repellent, 5-10 parts of a vulcanization aid and 2-4 parts of a heat resistant additive. Compared with a traditional cable protective sleeve and a preparation process thereof, the cable protective sleeve hasthe advantages that the steps are simple, the operation is convenient, the performance is stable, and good comprehensive performance is exhibited: the oxygen index of the material reaches 52 or above, the elongation at break at normal temperature reaches 698% or above, the tensile strength reaches 35.4Mpa or above, and at 200 DEG C, the elongation at break reaches 472% or above, and the tensile strength reaches 24.3 MPa or above, that is to say, in a high temperature environment, the mechanical properties are excellent, and the high temperature resistance is good; through a water resistance test, no water penetration point exists, good water resistance is shown, and the service life of the cable can be prolonged.

The invention belongs to the field of building materials and discloses a water-based seal primer for a penetrative building wall surface. The water-based seal primer comprises the following raw materials in parts by weight: 40-60 parts of de-ionized water, 0.1-0.3 part of a wetting agent, 0.1-0.2 part of a defoamer, 30-50 parts of modified acrylic emulsion, 5-10 parts of organic silicon emulsion, 0.1-0.5 part of a microbicide, 1-3 parts of a film forming aid and 0.1-0.2 part of a thickener. According to the water-based seal primer, the organic silicon emulsion and the modified acrylic emulsion are used as basic materials, and organic silicon groups are introduced, so that the penetrability of the coating is remarkably improved, the adhesion on the basic materials is excellent, the coating hardness and density can be enhanced, the water absorptivity is reduced, the effect of effectively sealing the basic materials is achieved, and the alkali efflorescence phenomenon is prevented.

The invention discloses a lithium silicate interior and exterior wall coating and a preparation method thereof. The lithium silicate interior and exterior wall coating is prepared from the following raw materials: water, hydroxyethyl cellulose, a dispersing agent, a wetting agent, a defoaming agent, attapulgite, diatomite, calcined kaolin, ground calcium carbonate, titanium dioxide, a humectant, an acrylic emulsion, modified lithium silicate resin, a thickening agent and a coalescing agent. And the modified lithium silicate resin is modified lithium silicate resin subjected to silane coupling and hydrolysis, and has the characteristics of high strength, high strength and self-drying film formation, so that the floating phenomenon caused by saltpetering on the wall surface due to the coating is fundamentally avoided. The lithium silicate-based inorganic coating produced by taking the emulsion as a base material comprehensively reaches various performance indexes of the inorganic coating, the attractive effect of a wall surface is remarkably improved, and the weather resistance and the stability of the coating can also be improved. The preparation method of the coating is simple in step, mild in reaction condition and suitable for large-scale production and preparation.

The invention discloses a mixed combustion device and combustion equipment utilizing same, and belongs to the technical field of combustion equipment. The mixed combustion device comprises a to-be-sprayed medium channel and a mixed combustion channel, wherein a reaction space wall for spacing the to-be-sprayed medium and the mixed combustion channel is provided with an orifice; and a combustion medium is sprayed from the to-be-sprayed medium channel to the mixed combustion channel through the orifice. From a combustion initial end of the mixed combustion channel to a combustion exhaustion end of the mixed combustion channel, combustion conditions are optimized along with progress of a combustion process; and different matching proportions of the to-be-sprayed medium are realized according to needs of different combustion stages, mixing uniformity of different media is realized to the greatest extent to facilitate combustion. The mixed combustion device is suitable for combustion of gas fuels, can be applied to combustion of liquid and solid fuels, and is especially suitable for combustion of fuels such as natural gas, coal gas, biogas, biomass cracking fuel gas, fuel oil, methanol, pulverized coal, biomass micro powder, straws, firewood, biomass forming fuels, block-shaped coals and the like.

The invention discloses a file reinforcement method and device. The method comprises the following steps: converting a target function in a target executable file, and registering in a library file; when a system calls the target function, determining a registered local function through the library file; and according to the registered local function, determining the target function, and successively carrying out interpretive execution on each instruction in the target function through a preset interpreter. Through the reinforcement of the target executable file, the target executable file can be prevented from being inverted so as to protect the safety of the target executable file.

The invention discloses a carcass layer tread rubber of an aviation radial tire. A crude rubber system of the carcass layer tread rubber jointly adopts natural rubber and butadiene rubber; a reinforcement system adopts STERLIN V (SV) carbon black and adopts parts of white carbon black; accessory ingredients, including silane coupling agent KH-560, binding agent SL-3090, adhesion promoter AIR-201, adhesion promoter AIR-1 and the like, are added into a formula. The carcass layer tread rubber disclosed by the invention has the advantages of low hardness and stress at definite elongation, soft rubber material and small possibility of generating gaps during repeated deformation; the carcass layer tread rubber can be suitable for the performance requirements of high speed, high load and high refurbishment frequency of a novel tire in the future; before and after ageing, the carcass layer tread rubber has the advantages of high bonding strength of the rubber material and a nylon cord, good fatigue durability, low heat generation, high rebound value and small hysteresis loss; a carcass layer of the tire can be protected from delamination, swelling and tire side puncturing, and the service life and the safe performance of the aviation radial tire are improved.