32results about How to "Clear impact" patented technology

The invention discloses a device and a simulation method for simulating the influence of high-temperature heat-conducting components on fire extinguishing, comprising: a container, a heat-conducting component, a fire-extinguishing device and a monitoring device. One end of the container is open, and the container carries a layer of combustible liquid. The layer of combustible liquid is combustible in the air, and a flame is formed when the layer of combustible liquid is burned. The heat-conducting member is arranged in the container, a portion of the heat-conducting member is located in the combustible liquid layer, and a portion of the heat-conducting member extends to the flame. The fire extinguishing device is used to extinguish the flame in the container. The monitoring device is used to monitor the status information in the combustible liquid layer and / or the heat conducting member. In the device of the embodiment of the present invention, the heat-conducting member heated by the flame can simulate the high-temperature heat-conducting member at the fire scene, and the monitoring device can monitor the combustion and fire-extinguishing conditions of the combustible liquid layer in real time, and can also monitor the physical state of the heat-conducting member to reproduce the existence of high temperature The influence of heat-conducting components on the fire and extinguishing process of storage tanks can provide rescue guidance.

The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's color difference formula defined in JIS Z 8730; D=(ΔL2+Δa2+Δb2)1 / 2.

The invention provides a water quality detection system of a water transmission and distribution pipe network, which includes: a water quality modulation module, which is used to deploy test water for different water quality parameters; a water distribution pipe network simulation module, which simulates the water supply pipes of the water supply pipe network, including water pipes and water pipes The water intake valve, butterfly valve, exhaust valve and detection port on the water pipe are fully enclosed and symmetrically distributed in a double serpentine shape; the power module is used to control the water flow velocity and water flow pressure of the water transmission and distribution pipe network simulation module; the control and metering module , including water quality parameter data acquisition equipment, which is connected with the detection port to detect the water quality parameters of the water in the water pipeline; the control unit, according to the water quality parameter data monitored by the water quality parameter data acquisition equipment, controls the water quality deployment module modulation and factory water or pipe network The test water with similar water quality characteristics is transported and distributed in the middle, and the power module is used to control the test water to circulate in the water pipeline according to the set pressure and flow rate, and samples are taken regularly for testing.

A method for determining printing parameters of a printing press, in particular a flexographic printing press, comprises the following steps: First, a printing plate (12) is provided and mounted on a printing cylinder (14). At least one high-resolution image of the surface of the printing plate (12) is then recorded by means of a 3D camera (18). A height profile of the printing plate (12) is determined on the basis of at least one high-resolution image, and a simulated printing image is then calculated on the basis of the height profile and initial settings of printing parameters. Finally, the optimized printing parameters are determined by checking and / or changing the initially set printing parameters. For this purpose, after the printing parameters have been changed, the simulated printing image is calculated again. Additionally, a test bench is specified on which this approach can be performed.

The invention relates to a method for analyzing the long-term change of the total electron content of the ionosphere. First, the influence of solar activity, geomagnetic activity and neutral atmospheric components is considered, and on this basis, a model of the total electron content of the ionosphere changes with time is established, and then the global observation is used to The long-term observation results of the ionospheric total electron content obtained by the system establish a system of equations and calculate the model coefficients; further use the long-term observations of the ionospheric total electron content to calculate the correlation between the model value and the observed value, and use it as an evaluation of the model accuracy standard. The model correlation analysis is carried out on the long-term observations of the multi-source ionospheric total electron content, and the weight of each influencing factor on the long-term change of the ionospheric total electron content is judged. The above analysis is carried out on different regions of the world, and the differences in the total electron content of the ionosphere over time in each region are judged. This method can effectively analyze the long-term changes in the total electron content of the global ionosphere.

The invention belongs to the technical field of aircraft elastic motion modeling, and specifically relates to an elastic motion modeling method of a trailing edge rudder gliding aircraft. The method comprises the following steps: (1) converting an elastic body transverse free vibration into superposition of various mutually independent main vibrations by utilizing modal orthogonality; (2) according to a linear small disturbance hypothesis, under the action of external forces, still describing the transverse vibration of an elastic body approximatively by utilizing modal superposition, and determining a vibration mode function by structural characteristics (rigidity and quality distribution) of the elastic body and a boundary condition of the elastic body; (3) establishing a vibration differential equation according to the d'almbert's principle and other methods; and (4) analyzing the external forces, which comprise an aerodynamic force, a rudder surface control force, a posture jet pipe control force, a rudder surface swinging inertia force and the like, influencing an elastic vibration of the gliding aircraft. A traditional elastic motion modeling method is corrected and improved.

The invention belongs to the technical field of mechanical dynamics, and particularly relates to a meshing characteristic analysis method of stripping bevel gear pair which is corrected by considering substrate rigidity. According to the method, firstly the gear tooth of a bevel gear pair is divided into N independent and uniform thin-sheet straight gears in the tooth width direction, and based on the known stripping size and position parameters, the stripping condition of each straight gear is determined; through a potential energy method, a finite element substrate rigidity correction coefficient is introduced to calculate the time-varying meshing rigidity of each single stripping straight bevel gear; based on ANSYS software parameterized programming, a three-dimensional finite element stripping bevel gear contact model is established, the time-varying meshing rigidity is solved and obtained, and analysis and comparison with an analysis method result are conveniently achieved. Based on an analysis and finite element solution method, the influence of the stripping width ws, the stripping length as, the stripping axial position and the stripping tooth-direction position on the bevel gear time-varying meshing rigidity is analyzed, and the influence of axial multi-stripping and tooth-direction multi-stripping on the bevel gear meshing rigidity is considered at the same time.

The invention discloses a method for controlling the vertical lapping morphology of a single-pass cladding layer manufactured by arc additive manufacturing. First, the first cladding layer is formed on a forming substrate, and the width and height of the first cladding layer are measured to determine Parabolic fitting parameters, determine the optimal layer height according to the fitting parameters, and then carry out the forming of the second cladding layer under the premise of keeping the wettability of the cladding layer stable according to the fitting parameters, so as to realize the improvement of the first cladding layer The control of the overlapping morphology of the first layer to the second cladding layer; the second cladding layer is used as a new cladding layer, and then the overlapping morphology of the new cladding layer is controlled until the vertical overlapping is completed, realizing The control of the vertical lap morphology of the cladding layer is achieved. The present invention is a method for controlling the vertical lapped appearance of a single-pass cladding layer manufactured by arc additive manufacturing. Vertical lapping effect of cladding layer.

The invention discloses a turbulence combustor capable of generating multi-scale controllable flow field . The combustor comprises a fuel air supply and mixing device and a multi-layer pore plate device for generating a multi-scale controllable flow field. A vertical arrangement form is adopted in the whole device, air and fuel enter through the air inlet pipe when the device works, the collisionplates and the sintered metal porous material can be fully premixed, and meanwhile tempering is prevented, then the premixed gas forms a controllable flow field through a turbulence generating pore plate, and finally a premixed turbulent flame with a stable controllable flow field is formed at an outlet ignition. The turbulence generating pore plate of the device adopts four-layer design, and single-layer or multi-layer pore plate combinations can be designed according to actual requirements, so that needed different strength and scale turbulence fields are generated, the device has the advantages that an excellent turbulence control effect can be achieved, the structure is compact, the processing is convenient, and the working is safe and reliable.

The invention discloses a method for controlling the vertical lapping morphology of cladding layers based on wettability. First, the first cladding layer is formed on a forming substrate, and the parabolic fitting is determined by measuring the width and height of the first cladding layer. Parameters, determine the optimal layer height according to the fitting parameters, and then carry out the forming of the second cladding layer under the premise of keeping the wettability of the cladding layer stable according to the fitting parameters, so as to realize the transformation from the first cladding layer to the second cladding layer The control of the lapping morphology of the second cladding layer; the second cladding layer is used as a new cladding layer, and then the lapping morphology of the new cladding layer is controlled until the vertical lapping is completed, and the cladding is realized Control of layer vertical overlap morphology. The control method of the cladding layer vertical lapping morphology based on wettability in the present invention, the control effect on the cladding layer vertical lapping morphology conforms to the actual situation, the accuracy is high, and a better cladding layer can be realized Vertical overlap effect.