64results about How to "The principle is easy to understand" patented technology

The invention relates to non-wood fiber continuous cooking method and device. A suction filter plate is arranged on a cooking pipe of the traditional horizontal-pipe continuous cooking device so that cooking liquor can be charged into the cooling device again after being sucked through the suction filter plate and then heated through an external heat exchanger, therefore the purpose of indirect heating is realized; an intermediate pipe completing cooking is internally provided with a replacement filter plate; hot black liquor contained in pulp is replaced with cold black liquor, therefore cold blow is realized, and meanwhile the blown pulp achieves the degree of pulp washed by a vacuum pulp washer by replacing washing pulp; the suction filter plate and the replacement filter plate can be replaced and disassembled; the suction filter plate is self-cleaned depending on propeller scrapers of a screw shaft and is also provided with a back flushing device for forcible periodical cleaning; the replacement filter plate is cleaned depending on a stainless steel brushes positioned on rotary wings of a vertical type discharger and is also configured with back flushing liquid for forcible periodical cleaning; and the self-cleaning and the forcible periodical back flushing of the filter pates can ensure the smoothness of filter plate holes, therefore the purpose of continuous pulping is realized.

The invention provides an electric power converter control circuit capable of achieving self-regulation of a parameter of a controller. The circuit comprises an electric power converter main circuit, and also comprises an actual inductor energy detection circuit WL, an actual capacitor energy detection circuit WC, an output detection circuit WR, an actual energy analysis circuit W, an inductor expected energy computing circuit EL, a capacitor expected energy computing circuit EC, an output expected energy computing circuit ER, an expected energy analysis circuit E, an energy analysis circuit V, an adjustable PI controller circuit K, a driving signal generation circuit P and a difference computing circuit F. The invention provides the control circuit which regulates the PI parameter of the controller based on energy stored in the inductor and the capacitor in the electric power converter and the difference between the actual output energy of the electric power converter and the corresponding expected energy, and defects of the existing PI controllers can be solved under the premise of effectively controlling the electric power converter.

The invention discloses a transformer partial discharge map generation method based on a generated adversarial network. The method comprises the following steps of S1, taking a collected transformer partial discharge map with a label as an input sample set; S2, carrying out grayscale processing on the transformer partial discharge map with the label; S3, setting a random noise, and taking a Gaussian noise as the random noise which is about to be input; setting a loss function of a generator, getting the generator, taking the partial discharge map after grayscale processing and the random noiseas input of the generator, and passing the generator and generating a pseudo sample; S4, setting the loss function of a discriminator, generating the discriminator, taking the pseudo sample generatedin the S3 and an original partial discharge map as the input of the discriminator and determining, and carrying out parameter determination; and S5, after the parameter is determined, outputting theacquired transformer partial discharge map of the generated adversarial network if a device outputs 1, and abandoning if the device outputs 0. By using the method, the partial discharge map required by a researcher can be accurately generated.

The invention discloses an atmospheric temperature and humidity profile inversion method based on a ground multichannel microwave radiometer, and belongs to the technical field of meteorological detection. The method uses a 22-channel microwave radiometer and comprises steps of first obtaining microwave radiometer data; calculating the simulated brightness temperature data corresponding to the historical sounding profile data by using a radiation transmission model, and accordingly training an established BP neural network for inverting the atmospheric temperature and humidity profile; and inverting the atmospheric temperature and humidity profile by using the trained BP neural network. The BP neural network provided by the invention is simple in model, easy to understand, and capable of inverting the atmospheric temperature, the relative humidity and the vapor density profile at sufficient precision, and is simpler and more universal than other inversion algorithms; The method classifies two different weather conditions, and trains respective networks for different weathers, thereby improving inversion accuracy and meeting the needs of practical problems.

The invention relates to a laser velocimeter parallelism accuracy measuring apparatus and a measuring method thereof. The apparatus comprises a load-bearing platform, a mobile platform, a laser rangefinder, a data collection card, a processor, and a displayer. At least two laser velocimeters are installed in parallel on the load-bearing platform. The mobile platform is positioned under the load-bearing platform, and is installed on a pedestal through a horizontal slide mechanism. The laser rangefinder is installed at a side outside the mobile platform. The data collection card connects with a plurality of laser velocimeters, the laser rangefinder and the processor. A calculation result of the processor is outputted to the displayer. According to the method, a parallelism verification principle of high precision laser velocity measurement is utilized to calculate difference of angle values between the laser velocimeters, and measuring precision of angle difference is 0.005 degree. The apparatus has the characteristics of simple structure, an easy-to-understand principle and high measuring precision. The apparatus can be used without professional operation personnel and is worth popularization.

The invention relates to a constant volume type clean coal combustion device. The constant volume type clean coal combustion device mainly comprises a furnace inner wall, a furnace grate and a spring, wherein a cavity of the furnace inner wall is divided into an upper part and a lower part by the furnace grate, a pressure equalizing chamber is formed in the cavity below the furnace grate, a coal fired layer and a combustion chamber are arranged and formed in the cavity above the furnace grate from bottom to top, the bottom surface of the combustion chamber coincides with the top surface of the coal fired layer, the elastic coefficient of the spring is the product of the spontaneous stacking density of coal and the top surface area of the coal fired layer, the vertical central axis of the furnace grate is collinear with the central axis of the spring, the horizontal clearance between the side wall of the furnace grate and the side wall of the furnace inner wall is less than one half of the thickness of the furnace grate, in a coal combustion process, the furnace grate is lifted by the spring and moves upwards together with the coal fired layer, and the position of the top surface of the coal fired layer is relatively fixed. The constant volume type clean coal combustion device can be used by an industrial furnace, an industrial boiler or a rural coal fired stove which burns low ash coal, clean coal or biomass fuel. The constant volume type clean coal combustion device has the advantages of simple structure and low investment, the combustion efficiency is greater than 95%, the energy saving rate reaches 5% to 15%, and the emission of flue gas pollutants is lower than the comprehensive emission level of air pollutants.

The invention relates to a six-degree-of-freedom measurement method for a checkerboard cooperative target based on monocular vision of a mobile phone. The six-degree-of-freedom measurement method comprises the following steps: 1, defining a body coordinate system and pasting a checkerboard on a measured object; 2, erecting a mobile phone and setting a focal length to be unchanged, and shooting onecheckerboard image by a camera of the mobile phone; taking a movable flat plate to be pasted to the checkerboard, moving or rotating the checkerboard, enabling the camera to collect n checkerboard images in different directions, wherein n is larger than or equal to 2; 3, calibrating the n+1 checkerboard images by using a Zhengyou calibration method to obtain internal and external parameters of the camera, including a pose relationship between a coordinate system of the checkerboard and a coordinate system of the mobile phone camera; and 4, solving the pose relationship between the body coordinate system and the mobile phone camera coordinate system according to the pose relationship between the checkerboard coordinate system and the body coordinate system and the pose relationship betweenthe checkerboard coordinate system and the mobile phone camera coordinate system. The invention further relates to application of the method. The method is low in equipment complexity, reduces the cost of six-degree-of-freedom measurement, is high in accuracy, and belongs to the technical field of vision measurement.

The invention belongs to the synchronous collection technology of the technical field of test and measurement and particularly relates to a method for achieving synchronous collection of multiple devices through a single-channel analog signal. The method for achieving synchronous collection of the multiple devices through the single-channel analog signal comprises the following steps that an analog composite signal generated by the main device is transmitted to each auxiliary device and an analog collection channel of the main device simultaneously; each device conducts analog collection, local reference clock extraction and trigger signal extraction on the analog composite signal, so that a local reference clock and a trigger signal are obtained; the local reference clock is used as a sampling clock of each device, the trigger signal is used as a collection start control signal of each device, and therefore synchronous collection of the multiple devices is achieved. The method for achieving synchronous collection of the multiple devices through the single-channel analog signal is simple in form. Compared with an existing two-channel digital signal synchronizing method, the method for achieving synchronous collection of the multiple devices through the single-channel analog signal is more economical, more convenient to operate, more reliable, better in practicability, and capable of being popularized and being applied to various applications which need multichannel signal transmission between devices.

The invention relates to a magnetization, anti-scaling and scale removing treater for flowing water. The present invention discloses a drinking water purification device for group-breeding poultry and livestock. The device comprises eight parts of a jet, a rough filter, a mineral filter core, an active carbon filter core, a magnetization drug feeder, a purifying water outputting device, 2-10 purifying water faucets, a discharged sewage outputting device, 2-10 discharged sewage faucets, and a cabinet. According to the device, tap water or a pressure water supplying device such as a water pump is adopted to provide drinking water; water purification filter cores prepared from various materials and the magnetizer are adopted to treat to realize magnetization and purification of the drinking water; with the jet matching, and the discharged sewage is used while automatic back pumping and washing is performed on the water purification filter core without electricity, such that the service life of the filter core is prolonged; with the magnetization drug feeder matching, the magnetization and the purification of the drinking water are achieved while the drug solution with effects of prevention and treatment can be provided.

The invention provides a complete set of application device for a three-dimensional earth pressure cell, which includes a threaded telescopic guide rod, a three-dimensional earth pressure cell fixed base and connection controls, a three-dimensional earth pressure cell, data wires, and a threaded telescopic guide rod It is connected with the fixed base of the three-dimensional earth pressure cell through a connection control, and multiple wires of the three-dimensional earth pressure cell are summarized into one data bus. At the same time, a method for implementing a complete application device of a three-dimensional earth pressure cell is provided. The beneficial effect is that the complete application device of the three-dimensional earth pressure cell solves the problem that the embedding angle and depth of the three-dimensional earth pressure cell cannot be determined in the field application process, and realizes the application of the three-dimensional earth pressure cell in the undisturbed soil test. Applying the complete set of application device of the invention to actual engineering can improve the accuracy of measurement results, and the implementation method can save time and improve construction efficiency.

The invention relates to a convenient-to-detach badminton net rack. The net rack comprises a base, a base rod, a fixing pipe, a slide key, a slide key fixing bolt and a movable rod, and the base comprises a bottom disc, a base connection rod and base rod sleeves; the base connection rod extends into the fixing pipe, and a base connection rod outer thread is matched with a fixing pipe inner threadto achieve fixed threaded connection between the base and the fixing pipe; the slide key comprises a slide key body and a slide sheet, the slide key body is located in the fixing pipe, the slide sheetis clamped between two fixing pipe clamping sheets, the slide key penetrates through a slide sheet hole and a clamping sheet slide groove through a slide key fixing bolt in sequence, and the slide key is fixedly connected with the fixing pipe; the bottom of the movable rod extends into the fixing pipe from the top of the fixing pipe, and through the a movable rod outer thread and a slide key inner thread, the movable rod is fixedly connected with the fixing pipe. According to the convenient-to-detach badminton net rack, by improving the connection form and structural form of a support, the net rack is designed into a detachable support structure, the support adjustment precision is high, and the net rack is stable in structure and convenient to assemble, disassemble and use.

The invention belongs to the technical field of teaching equipment, and specifically provides a Pythagorean theorem teaching aid. The teaching aid comprises three cuboid modules, a straight triangular prism module, and rubber plugs. The bottom surface of the straight triangular prism module is a right triangle, wherein the length of the short right-angle side is a, the length of the long right-angle side is b, and the length of the hypotenuse is c. The three cuboid modules and the straight triangular prism module are of equal height. The three cuboids are of equal length and width, and are recorded as a, b and c. The three cuboid modules respectively share one side with the straight triangular prism module. The top ends of the cuboid modules are respectively provided with a small hole into which liquid can be injected. When the rubber plugs of the straight triangular prism are opened, liquid can circulate in the whole system. In addition, the whole teaching aid is made of transparent material, and the inside of the teaching aid can be seen clearly. The teaching aid visually verifies the Pythagorean theorem and the converse theorem thereof from actual situations, and is simple to operate. The principle is easy to understand. The teaching aid plays a great positive role in helping students to learn and understand the Pythagorean theorem.

The invention relates to a flattening tooling platform for products. The flattening tooling platform comprises a base, a support seat, a support rod, a push rod, a clamping device, a flattening device and a tooling platform body, wherein the support rod is mounted on the base through the support seat; one end of the support rod is fixedly mounted on the support seat, and the clamping device is mounted at the other end of the support rod; the push rod is clamped in the clamping device; the flattening device is fixedly mounted at the middle of the push rod; a sleeve is mounted in and sleeved with the through hole of the clamping device; the push rod is mounted in the sleeve; the flattening device comprises an air cylinder and a pressing plate; the pressing plate is mounted at the lower end of the output shaft of the air cylinder; the tooling platform comprises the base, a tooling moving seat, a working flat plate and baffles; rolling wheels are fixedly arranged at the bottom of the tooling moving seat and mounted in lower grooves formed in the base; the working flat plate is mounted in the upper surface of the tooling moving seat; and the baffles are arranged on the left edge and the right edge of the tooling moving seat separately. The flattening tooling platform for product has the benefits as follows: the structure is simple, the flattening efficiency is high, the flattening quality is good, and the application range is wide.

The invention relates to a landslide area power transmission tower safety evaluation method suitable for multiple working conditions. The method comprises the following steps: establishing a hierarchical structure model for landslide area power transmission tower safety evaluation ; establishing a judgment matrix according to the importance relationship among the indexes of each level, and obtaining subjective weights corresponding to different working conditions; through a correlation-based index weight determination method, considering the comparison strength of samples and the conflict between indexes, carrying out standardization processing on the data, and determining objective weights between factors according to a hierarchical structure model; carrying out combined weighting on the subjective weight and the objective weight according to a minimum identification information principle to obtain a comprehensive weight; and using a fuzzy evaluation method to determine which safety state the running power transmission tower is in. Any possible working condition of the power transmission tower in the landslide area is represented, so that the operation state of the power transmission tower in the landslide area under the specific working condition is analyzed.

An experimental instrument of an Archimedes screw water pump belongs to the field of teaching aids. The experimental instrument is composed of a pedestal, an auxiliary pool, a water outlet, an upper pool, a fixing support, an Archimedes screw device, an anti-overflow slideway, a lower pool and a transmission water channel. The Archimedes screw device includes a handle, a central shaft, a separator plate, a cylinder and an Archimedes screw hollow tube. The lower pool is positioned at one end of the pedestal, the side, opposite to the lower pool, of the pedestal is higher, the upper pool is fixed in the higher side, the auxiliary pool is fixed in the side surface of the higher part of the pedestal, the upper pool is provided with the water outlet, the water outlet is communicated to the auxiliary pool, the bottom end of the auxiliary pool includes an opening, the lower pool is connected with the transmission water channel, the anti-overflow slideway is semicircular and is fixed between the upper pool and the lower pool, the Archimedes screw device is fixed on the fixing support via the separator plate and the central shaft, and the central shaft can rotate around the central hole of the fixing support. The experimental instrument can present an Archimedes screw effect in a vivid manner.

The invention discloses an ultralow standby power consumption circuit of an electric appliance. The circuit comprises a monochromatic light sensing circuit, a signal conditioning circuit, a relay driving circuit and a magnetic latching relay, wherein the monochromatic light sensing circuit, the signal conditioning circuit, the relay driving circuit and the magnetic latching relay are connected insequence. The monochromatic light sensing circuit is used for receiving a remote control optical signal and generating a pulse signal under the action of a preset wavelength light. The signal conditioning circuit is used for amplifying the pulse signal. The relay driving circuit is used for controlling the electrification of the magnetic latching relay so as to drive the magnetic latching relay towork. The magnetic latching relay is connected with a remote control circuit of a controlled household electrical appliance and is used for controlling the on and off state of the circuit. The circuit further comprises a power supply circuit for supplying power. Through controlling the standby power supply of the electric appliance, the standby of the electric appliance is realized by the ultralow standby power consumption circuit. Therefore, the original standby power consumption of the electric appliance is saved, and the ultra-low power consumption standby is carried out.

The invention discloses a magnet yoke dovetail-shaped broach comprising a long guide rail, a dovetail-shaped broach body, a height cushion block and broach blades. The dovetail-shaped broach body is slidably mounted on the long guide rail through a rolling core pressing strip. A rolling core pressing plate is arranged on the rolling core pressing strip and located on an inner groove part in the lower surface of the dovetail-shaped broach body. Multiple layers of broach blades are mounted on the left and right sides of the upper surface of the dovetail-shaped broach body correspondingly. The broach blades on the left side and the broach blades on the right side are symmetrically arranged. The broach blades on the left side include front parts and rear parts which are mounted in a front end broach blade groove and a rear end broach blade groove correspondingly, and the front end broach blade groove is deeper than the rear end broach blade groove. The height cushion block is mounted in the middle area of the upper surface of the dovetail-shaped broach body and connected with the dovetail-shaped broach body through hexagon socket cap screws A. The magnet yoke dovetail-shaped broach has the beneficial effects that using is convenient, cutting is stable, the quality of the machining surface is good, and working efficiency is high.

The invention discloses wear-resistant impact-resistant waterborne epoxy floor paint and a preparation method thereof. The preparation method comprises the following steps: S1, preparing an allyltriphenylphosphonium bromide/graphene oxide compound; s2, preparing a quaternary ammonium salt polymer intermediate; and S3, preparing the wear-resistant impact-resistant waterborne epoxy floor paint. According to the invention, allyltriphenylphosphonium bromide is introduced into a graphene oxide sheet layer, and an allyltriphenylphosphonium bromide molecular chain can be utilized to expand the sheet layer structure of the graphene oxide, so that the interface bonding force between the allyltriphenylphosphonium bromide/graphene oxide compound and an epoxy floor paint system is increased; the wear resistance and the impact resistance of the epoxy floor are optimized; and the special phenylphosphine structure of the allyl triphenyl phosphonium bromide has high thermal stability, so that the weather resistance of the epoxy floor paint can be greatly improved, the aging of the epoxy floor paint is prevented, and the service life of the epoxy floor paint is greatly prolonged.