251 results about "Scale effect" patented technology

The invention relates to an experimental device in the field of natural gas recovery, and particularly relates to a shale gas reservoir recovery simulation experimental device. The shale gas reservoir recovery simulation experimental device comprises a high-pressure gas source system, an injection system, a model system, a thermostat system, a pressure return system and a data acquisition system, wherein an intermediate container in the injection system and a core holding unit in the model system are positioned in a thermostat. The shale gas reservoir recovery simulation experimental device has the advantages that a plate model core clamping device and two full-diameter core clamping devices are connected, the cores of different dimensions are connected in series, multi-scale pore characteristics in the shale gas reservoir can be simulated, the multi-scale characteristics of shale gas seepage influenced by the multi-scale effect are reflected, the recovery process of the shale gas reservoir can be accurately simulated, and recovery mechanisms and recovery dynamics of the shale gas reservoir in different modes can be comprehensively evaluated; and meanwhile, a large-scale shale core adsorption / desorption experiment can be performed by utilizing the experimental device, and a gas adsorption / desorption rule of the large-scale shale core under different conditions is researched.

The invention discloses a microchannel enhanced heat exchange system of a rotary room-temperature magnetic refrigerator and a heat transfer method thereof. The system comprises a refrigerant disc, a cold end heat exchanger, a hot end heat exchanger and a solution pump, wherein the cold end heat exchanger and the hot end heat exchanger are connected with the refrigerant disc. the refrigerant disc comprises a refrigerant bed, an inner circle collecting tank, an outer circle collecting tank, four pairs of interzone adiabatic baffles and a plurality of intra-zone adiabatic baffles; the refrigerant bed comprises a plurality of trapezoidal microchannel flat tubes, an upper magnetic refrigerant plate and a lower magnetic refrigerant plate; the trapezoidal microchannel flat tubes, the upper magnetic refrigerant plate and the lower magnetic refrigerant plate are arranged between the inner circle collecting tank and the outer circle collecting tank; and the trapezoidal microchannel flat tubes are arranged between the upper magnetic refrigerant plate and the lower magnetic refrigerant plate. The heat transfer method is characterized in that the heat transfer fluid experiences a cycle of adiabatic excitation and demagnetization after passing through the different zones of the microchannel enhanced heat exchange system; and the rotary magnetic refrigerator recirculates the processes to realize refrigeration. In the invention, the characteristic that the microchannel can effectively enhance heat exchange due to scale effect is adopted and the microchannel is applied to the refrigerant bed, thus improving the efficiency of the refrigerating system and reducing corrosion of the heat transfer fluid to the magnetic refrigerant.

The invention discloses a fabrication method for wafer-level mono-axial strain Si on a AlN-buried insulation layer based on non-crystallization and a scale effect. The fabrication method is implemented according to the following steps of depositing a SiO2 layer at a Si layer at a top layer of a Si wafer on the cleaned AlN-buried insulation layer; performing ion injection on the Si layer at the top layer to form a non-crystallization layer, and removing the SiO2 layer on the non-crystallization layer; depositing a tensile stress SiN thin film or a press stress SiN thin film on the Si layer at the top layer, etching the SiN thin film to a mono-axial tensile stress SiN strip-shaped array or a mono-axial press stress SiN strip-shaped array, annealing the wafer to make the non-crystallization layer re-crystallized, and enabling the AlN-buried insulation layer to generate plastic deformation; and etching the SiN strip-shaped array to obtain the wafer-level mono-axial strain Si on the AlN-buried insulation layer. The wafer-level mono-axial strain Si has the advantages of high heat dissipation and large strain, and the fabrication method can be used for fabricating a wafer-level mono-axial strain Si material on the AlN-buried insulation layer.

The invention relates to a multi-scale mould for making and simulating a structural surface of a country rock. The multi-scale mould comprises an A-type outer plate, a B-type outer plate, a C-type outer plate, a bottom plate, a flat and straight plugging plate, a curved surface plugging plate, a plug pin, a buckle, a nut and a jacket. A shearing test of simulating the structural surface of a rock needs to use a mould to pour structural surface samples, and in order to research the influence of a scale effect on the shearing property of the structural surface, a plurality of structural surface samples with different sizes need to be prepared for the test, while, the two problems always exist alternatively that in a laboratory moulds with different sizes are difficult to provide and huge investment on customizing the moulds with different sizes is needed, so that the great waste is caused. Through the adoption of a structural surface mould capable of making multiple scales in the making process of the structural surface samples, not only can the structural surface samples with different sizes be made, but also the resource waste can be avoided, and the test cost is reduced.

The invention discloses an automatic scale segmentation parameter selection method for object remote sensing image analysis. Optimum space scale segmentation parameters are determined through calculating an average local variance curve range method; optimum attribute scale segmentation parameter are determined through a local variance histogram estimation method; optimum merging threshold parameters are determined by employing anisotropy space correlation statistics to calculate horizontal and vertical ranges; scale effect evaluation and scale segmentation parameter optimization adjustment on a segmentation result are carried out by employing an index evaluation method. In combination with the geological spatial statistics and a mode identification theory method, the automatic scale segmentation parameter selection method realizes automatic selection of the optimum scale segmentation parameters before segmentation, can clearly explain the determined optimum scale segmentation parameters based on statistics theories, has higher theory credibility and improves information extraction and analysis efficiency and precision for object remote sensing images.

The invention discloses a control method for coast atmospheric corrosion resistant scale on the surface of a boat deck, which belongs to the field of steel for hull structures. According to the invention, the structure and thickness of scale on the surface of a boat deck is controlled by optimizing production processes for boat decks. The method comprises the following key points: controlling parameters of heating temperature, time, residual oxygen and the like for continuous casting billets and reinforcing a de-scaling effect once; controlling the index of chloride ion in water for production, reducing the content of deposited chloride ions in scale and inhibiting corrosive pitting; controlling initial rolling temperature and finishing rolling temperature in the stage of finish rolling, reasonably utilizing a weak water cooling system, increasing the content of Fe3O4 in scale, reducing the content of Fe2O3, retaining a small amount of FeO and enabling the scale to have good plasticity, a bonding force and corrosion resistance. The advantages of the invention are as follows: it does not need to reconstruct existing equipment, and the surface quality and production efficiency of the boat deck can be enhanced through technological optimization; structural composition of the scale is reasonably controlled, which enables the surface of the boat deck to have excellent coast atmospheric corrosion resistance, especially enables corrosive pitting caused by chloride ions to be inhibited, and enables the storage duration of the boat deck in coast environment to be prolonged.

A method of performing a DFT (discrete Fourier transform) or a DFT derived transform on data, comprising: providing spatially modulated light having spatial coherence, said spatially modulated light representing the data to be transformed; Fourier transforming said spatially modulated light, using an at least one optical element; and compensating for at least one of a scaling effect and a dispersion effect of said at least one optical element, using an at least one dispersive optical element.

A tester assembled by multiple sets of mechanisms for shear strength-scale effect of a rock joint includes a horizontal loading mechanism, a horizontal supporting and force-measuring mechanism and a sample installation and lifting table are mounted on a platform on the bottom of a frame, the horizontal loading mechanism and the horizontal supporting and force-measuring mechanism are respectively located on two sides of the sample installation and lifting table; rock joint sample is divided into an upper portion and a lower portion by a slit, the horizontal loading mechanism is configured to load the upper portion of the multi-scale rock joint sample, and the horizontal supporting and force-measuring mechanism is configured to support the lower portion of the multi-scale rock joint sample; a vertical loading mechanism is located above the multi-scale rock joint sample, and can be mounted on the frame in a manner of being movable up and down; and the horizontal loading mechanism comprises at least two tangential actuators, and the vertical loading mechanism comprises a vertical actuator group including at least two vertical actuators. The present invention effectively meets the test requirements on the scale of the multi-scale rock joint samples under large-range loads, and is good in reliability.

A method of performing a DFT (discrete Fourier transform) or a DFT derived transform on data, comprising: providing spatially modulated light having spatial coherence, said spatially modulated light representing the data to be transformed; Fourier transforming said spatially modulated light, using an at least one optical element; and compensating for at least one of a scaling effect and a dispersion effect of said at least one optical element, using an at least one dispersive optical element.

The invention discloses an organic electroluminescence display device, a driving method thereof and a display device. Due to the fact that in the organic electroluminescence display device, each organic electroluminescence pixel unit comprises at least two stacked and mutually insulated organic electroluminescence structures with different colors, each organic electroluminescence pixel unit can display the gray scale effect of at least two colors according to an applied signal in different frames during display. Compared with the situation in the prior art that in different frames, each organic electroluminescence pixel unit can only display the gray scale effect of one color, the organic electroluminescence display device can improve the display effect due to the fact that each organic electroluminescence pixel unit can display more colors.

A device and method for producing Inter Symbol Interference (ISI) scaling of S-Parameter Touchstone files for the generation of ISI scaling effects on serial data patterns by direct digital synthesis is described. The features of the present invention allow user to set parameters such as data rate, voltage amplitude, encoding scheme etc. as per requirements for the serial data patterns. An ISI scaling value is selected and applied to an S-Parameter Touchstone file representing transmission path effects. The serial data pattern parameters and the ISI scaling value used with the S-Parameter Touchstone file are compiled to generate a digital data waveform record file. The digital waveform record file is applied to a waveform generation circuit for converting the digital data into an analog serial data pattern with ISI scaling effects.

The invention discloses a scale method to multimedia audio image, which implements transformation operations to the executive color space of an audio image, filling the image into the transformed color space. The information content of image included in the three color component are different, the image information is concentrated in one color component; and the audio image is scaled in the transformed color space. As for the color component which includes most of the audio images, complicated interpolation method are given when scaling, which gives the color component better effects; and relatively simple interpolation method is given to other color components when image scale process are implemented. The scale method of the multimedia audio image can well remain the details of audio images, with excellent scale effects; in particular when used in low bit rate and bad net bad conditions with audio of bad image quality, better audio scale effects can be obtained compared with other methods.

The invention discloses a dynamic voltage scaling system-oriented on-chip monitoring circuit, which is characterized by comprising a master register circuit (1), a slave register circuit (2), a shadow register circuit (3), an error signal generation circuit (4), an in-situ error correction selector (5), a metastable state monitoring circuit (6), an error signal integration circuit (7), a restoration mode selection circuit (8) and an in-situ error restoration control signal generation circuit (9). By the dynamic voltage scaling system-oriented on-chip monitoring circuit, the influence of factors such as a process, voltage, temperature noise and the like on a main circuit can be effectively resolved into the variation of delay characteristics of a key unit and a special path to reflect the actual conditions of each part in a chip, and a dynamic voltage scaling effect is greatly improved.

The invention discloses a microchannel enhanced heat exchange system of a rotary room-temperature magnetic refrigerator and a heat transfer method thereof. The system comprises a refrigerant disc, a cold end heat exchanger, a hot end heat exchanger and a solution pump, wherein the cold end heat exchanger and the hot end heat exchanger are connected with the refrigerant disc. the refrigerant disc comprises a refrigerant bed, an inner circle collecting tank, an outer circle collecting tank, four pairs of interzone adiabatic baffles and a plurality of intra-zone adiabatic baffles; the refrigerant bed comprises a plurality of trapezoidal microchannel flat tubes, an upper magnetic refrigerant plate and a lower magnetic refrigerant plate; the trapezoidal microchannel flat tubes, the upper magnetic refrigerant plate and the lower magnetic refrigerant plate are arranged between the inner circle collecting tank and the outer circle collecting tank; and the trapezoidal microchannel flat tubes are arranged between the upper magnetic refrigerant plate and the lower magnetic refrigerant plate. The heat transfer method is characterized in that the heat transfer fluid experiences a cycle of adiabatic excitation and demagnetization after passing through the different zones of the microchannel enhanced heat exchange system; and the rotary magnetic refrigerator recirculates the processes to realize refrigeration. In the invention, the characteristic that the microchannel can effectively enhance heat exchange due to scale effect is adopted and the microchannel is applied to the refrigerant bed, thus improving the efficiency of the refrigerating system and reducing corrosion of the heat transfer fluid to the magnetic refrigerant.

The invention belongs to the technical field of remote sensing image classification, and particularly relates to a remote sensing image classification method based on multi-scale depth features. Firstly, the algorithm can automatically establish multi-scale image pyramid; secondly, by means of a traditional convolutional neural network algorithm, the algorithm can automatically extract high-levelimage features by means of a self-learning algorithm; and finally, the multi-scale depth image features are fused with the spectral features, thereby improving the remote sensing image classificationprecision. According to the multi-scale deep neural network algorithm, a multi-scale image pyramid can be automatically constructed for an input remote sensing image, and then a multi-scale training sample is extracted and used for extracting multi-scale image spatial features. The algorithm has the following two advantages: 1) deep stable and effective image features can be automatically extracted, and 2) the multi-scale feature learning method can effectively describe the multi-scale effect of a complex ground object target in an image.

The invention discloses a method for inversing the air temperature of a surface layer based on thermal infrared remote sensing. The method comprises the following steps of: (1) determining a fundamental form of a surface layer air temperature remote sensing inversion model; (2) establishing the surface layer air temperature remote sensing inversion model; (3) basing on different surface types of air temperature remote sensing inversion models; and (4) analyzing by using the scale effect of the remote sensing inversion model to obtain an optimal air temperature remote sensing inversion model. A spatial distribution graph of the near-surface layer air temperature can be quickly and accurately calculated by the method. Because the model is established by a regression analysis method in consideration of a surface energy balance process, the method has the advantages of both a theoretical model and a statistical model, high accuracy and high practicability.

The invention discloses an energy consumption managing system and method for a large-sized public building. The system comprises a wireless sensing network node, a WIA (Windows Image Acquisition) wireless gateway and a system server, wherein the wireless sensing network node is in signal connection with the WIA wireless gateway; and the WIA wireless gateway is in network connection with the system server. System nodes are constructed into a network, a networked scale effect is achieved, and online monitoring can be performed on all energy consumption data and environmental information in the large-sized public building; moreover, a large quantity of data can be analyzed and counted to form an effective control strategy; and illumination and air-conditioning parameters can be optimized more effectively under the condition of ensuring comfort degree, so that optimal energy conservation is achieved.

The invention relates to the energy-saving lamp full automatic-assembly assembly line. It belongs to the energy-saving lamp manufacture equipment technology area. Its characteristic lies in that the rack intermediate deck coordinate installs the work piece conveying appliance by the transmission chain drive, the one output end of the decelerator which installs on the sublayer of the rack and connects the motor driver connects the dynamic major axis which coordinates the cam major axis driver, another output through the cam dismember coordinates to the work piece conveying appliance, above the work piece conveying appliance fit establishes automatic compression moulding equipment, automatic soldering lamp base equipment, automatic dial nail equipment, compression moulding cam, soldering lamp base cam, dial nail cam which installs on the cam major axis separately connects the automatic compression moulding equipment, automatic soldering lamp base equipment, automatic dial nail equipment. The line flow has rational design, the automation pattern substitutes manual work, reduces the suggestion factor of the quality flaw, enormously raises the production efficiency and the product quality, creates the scale effect, take a foundation for promoting the enterprise brand image.

The invention is suitable for the field of the oceanographic engineering and provides a bidirectional forced vibration experimental apparatus for a deep sea riser segment model under the action of uniform flow. The bidirectional forced vibration experimental apparatus comprises a deep sea riser module, end part prosthesis modules, horizontal sliding modules, vertical sliding modules and a measurement analysis control module, wherein both ends of the deep sea riser module are respectively connected with the end part prosthesis modules; the vertical sliding modules are respectively connected with the corresponding end part prosthesis modules and the corresponding horizontal sliding modules; the horizontal sliding modules are fixedly connected with the bottom of a trailer; and the measurement analysis control module is arranged on the trailer and is connected with the end part prosthesis modules, the horizontal sliding modules and the vertical sliding modules. In the invention, large-scale riser segments are adopted, so that a test Reynolds number is in the range of 106 for avoiding the scale effect; the double freedom degree forced movement is adopted to truly simulate the vortex-induced vibration form of a riser; and meanwhile, due to the adoption of end part prosthesis, the problem of the boundary effect at both sides of the model in an experiment is solved.

The invention relates to a wool top shrinkproof scaling process. KMnO4 and DCCA (Drying Control Chemical Additive) are used as catalysts and added into clear water; chlorine is introduced; then, the shrinkproof scaling process is carried out on a wool top so that the processing capability of the chlorine on the wool top is much enhanced; meanwhile, KMnO4 and DCCA also have certain scaling effect on the wool top, and the effect is more mitigatory so that the whole shrinkproof scaling effect is greatly improved, the scaling effect is even, and the whiteness of the wool top is greatly improved; and by adding a proper amount of KMnO4 and DCCA, the dosage of CL2 is reduced by 30 percent on the basis of that in the prior art, the content of CL2 in the wastewater obtained by production is greatly reduced, the environmental protection pressure of wastewater treatment is lightened, and the wool top shrinkproof scaling process cost is reduced. The concentration initial addition amount of the chlorine in water is 0.35G / L in the prior art, and the concentration initial addition amount of the chlorine in water is around 0.23G / L in the invention; and the normal supplementing amount is 2.7 percent O.W.W (relative to 2.7 percent by weight of wool), and the supplementing amount is 1.9 percent O.W.W (relative to 1.9 percent by weight of wool) in the invention.

The invention provides an aerosol foundation data-based AOD (Aerosol Optical Depth) vertical correction effect evaluation method and system. The method comprises the steps of estimating a near-surface aerosol extinction coefficient and inverting the near-surface aerosol extinction coefficient based on observation data of a foundation visibility meter; inverting AOD based on observation data of a foundation sum photometer; inverting the near-surface aerosol extinction coefficient based on the visibility meter; performing vertical correction on the AOD based on a laser radar observation method or an atmospheric chemistry mode simulation method, and estimating the near-surface aerosol extinction coefficient according to a vertical correction result; and evaluating the effect and applicability of an AOD vertical correction method by comparing the difference between the estimated near-surface aerosol extinction coefficient with the inverted near-surface aerosol extinction coefficient. According to the method and the system, the errors caused by direct use of a satellite for AOD inversion and the evaluation uncertainty caused by a scale effect and the like can be avoided, so that the difficult problems in effect evaluation and applicability selection among various AOD vertical correction methods and various data sources are solved.

The invention relates to a method and a tester for determining a relative density sample preparation standard of a laboratory scale test on coarse aggregate, and belongs to the technical field of geotechnical testing. The method comprises the following steps: firstly, selecting graded coarse aggregate, and conducting a heavy vibrating roller extremum dry density test to obtain maximum dry density values of a field test; through a surface vibrator compaction manner, adjusting compaction parameters of the tester to obtain the maximum dry density values under different compaction manners and compaction parameters; then, determining selected equivalent compaction parameters under an indoor compaction manner to serve as a compaction standard of a laboratory maximum dry density test; finally, performing a laboratory relative density test on a scale material according to the compaction standard to obtain the extremum dry density of the scale material; according to a design index, to determining the sample preparation dry density or porosity of the laboratory scale test on the coarse aggregate through calculation. According to the method and the tester disclosed by the invention, by aiming at the scale problem of the original graded coarse aggregate, the influence of the scale effect of the coarse aggregate can be reduced, and the precision of the laboratory test on the coarse aggregate is effectively improved.

The invention is suitable for the field of ocean engineering and provides a deep-sea riser segmented model vertical flow forced vibration experimental device under the action of uniform flow. The deep-sea riser segmented model vertical flow forced vibration experimental device comprises a deep-sea riser module, false body modules, a fixing module, a sliding module and a measurement analysis and control module, wherein the two ends of the deep-sea riser module are connected with the end part false body modules respectively; the sliding module is connected with the end part false body modules and the fixing module respectively; the fixing module is fixedly connected with the bottom of one end of a trailer truck; and the measurement analysis and control module is arranged on the trailer truck, and is connected with the end part false body modules and the sliding module respectively. In the experimental device disclosed by the invention, a riser model with an appropriate slenderness ratiois selected, so that the practical Reynolds number of 106 can be reached under the experimental condition, and the scale effect is avoided effectively; and meanwhile, end part false bodies are adopted, so that the problem of boundary effects on both sides of the model during an experiment is solved.

The invention relates to a nano carbon-covered alumina support-based preparation process of a dehydrogenation catalyst. The preparation process is characterized by comprising the following steps of: preparing nano-scale carbon-covered gamma-AL2O3 through the steps of gelling, hydrolytic precipitation, pre-burning, and N2 thermal treatment by using an inorganic aluminum salt as an aluminum source and starch as a carbon source and adopting a 'One Pot' method; and loading active metal components by using the gamma-Al2O3 support, and performing activation to obtain a catalyst which ensures that an organic hydride has high dehydrogenation performance. The catalytic material combines dual advantages of the scale effect of a nano material as a catalyst and high anti-coking performance of a carbon-covered alumina material, thereby showing very high catalytic activity. Low-cost poly-hydroxyl starch is used in the preparation process of the carbon-covered gamma-Al2O3 support and is gelatinized into a gel; and compared with the conventional carbon-covered preparation process which adopts volatile hydrocarbons as a carbon source, the raw materials are easy to obtain, and are reproducible and environmentally-friendly.

The invention provides a vortex-induced vibration test device for a movable deep sea vertical pipe array model at the lower top end of uniform flow. The vortex-induced vibration test device comprises a plurality of deep sea vertical pipe modules, a top support module, a bottom support module, two vertical rail modules, a horizontal rail module, four motor modules, four cowling modules and a measuring and analytical control module, wherein two ends of each deep sea vertical pipe module are connected with the top support module and the bottom support module; and the measuring and analytical control module is connected with the deep sea vertical pipe modules by a lead. In the vortex-induced vibration test device, a large-scale vertical pipe model can be arranged to avoid a scale effect; the vertical rail modules and the horizontal rail module can be utilized fully to simulate vortex-induced vibration of the large-scale vertical pipe model under the influence of an ocean platform; and different arrays formed by the deep sea vertical pipe modules can be simulated according to actual requirements. Due to the adoption of modular design, the vortex-induced vibration test device is convenient to assemble and disassemble.

The invention discloses a method for association rule mining of ocean-land climate events with combination of a climate subdivision thought. A Delaunay triangulation network of space data is established and an overall and local long-side constraint is exerted on the space data, so that a reasonable and stable space adjacent relation network is obtained, the similarity of a time series of space adjacent entities is measured, hierarchical clustering is conducted to obtain a hierarchical cluster result, and a good climate subdivision result is obtained on the basis of false-T statistical magnitude analysis; a prior knowledge constraint of a related field is brought in and interested climate events are extracted from ocean climate indexes and land climate zones respectively, so that effective association rules among the ocean-land climate events are mined through exertion of a time window width constraint, a time delay constraint and a sufficiency and necessity constraint. The multi-scale effect can be effectively considered in the mining process so that an effective climate zone can be obtained and high efficiency, pertinence and practicability can be achieved through multiple constraints when the association rules are mined.

The invention relates to a carbon fiber / nanofiber synergistic high-toughness ceramic matrix composite and a preparation method thereof. According to the preparation method, carbon nano tubes and SiC nanowires are introduced into carbon fibers by virtue of a sizing technology, a multi-scale preform is woven through a weaving forming means, a ceramic matrix is densified through processes such as a chemical vapor infiltration method, a reactive melt infiltration method and a precursor body dipping and cracking method, and therefore the carbon fiber / nanofiber synergistic high-toughness ceramic matrix composite is prepared. The preparation method has the advantages that a carbon fiber / carbon nano tube / SiC nanowire multi-scale structure can give full play to the scale effect, the multi-scale preform is prepared by virtue of the sizing technology, on the premise that the performance of the carbon fibers is not damaged, the mass production of large-scale irregular structural components can berealized, and therefore the technical problem of simultaneous introduction of various nanofibers can be solved, the content and the distribution of the doped nanofibers is controlled, equipment is simple, the process control is easy, the cost is low, and large-scale industrial production is facilitated.

The invention discloses an organic electroluminescence display device, a driving method thereof and a display device. Due to the fact that at least part of pixel units are of a stacked structure, each pixel unit of the stacked structure comprises two sub-pixel unit stacked sets arranged in an adjacent mode. Each sub-pixel unit stacked set comprises at least two stacked sub-pixel units which are different in lighting color and insulated to each other. Therefore, during display, in different frames of images, the sub-pixel unit stacked sets in each pixel unit of the stacked structure can display the gray scale effect of at least two colors according to an applied signal. Compared with the situation in the prior art that in different frames of images, the gray scale effect of only one color is displayed at the position of each sub-pixel unit, the organic electroluminescence display device can improve the display effect due to the fact that the sub-pixel unit stacked sets can display more colors.

The cold-state descaling process of high-pressure water jets on the inner and outer surfaces of cold-drawn seamless steel pipes is a cold-state descaling process of high-pressure water jets used to remove oxide scales on the inner and outer surfaces of seamless steel pipes in the production of cold-drawn seamless steel pipes Technical field . The technical scheme of the present invention is: first descale the inner surface of the steel pipe, and then the nozzle exits the steel pipe after descaling, places the nozzle on the outer surface of the steel pipe through the lifting adjustment device, descales the outer wall of the steel pipe, and the steel pipe enters the next stage after descaling The roller table uses the water jet sprayed from the low-pressure water nozzle to clean the inner and outer walls of the steel pipe, and cleans the residual abrasive after descaling. This process has fast cleaning speed and good descaling effect. It avoids over-pickling caused by traditional pickling process. There is no damage to the inner and outer surfaces of the steel pipe and no pollution to the environment. The waste liquid can be recycled, saving costs, improving work efficiency and reducing labor. strength. This inventive process replaces the traditional pickling process in the production of cold-drawn seamless steel pipes, reduces pollution and reduces costs.

The invention discloses a river water environment physical model scale effect research test device. The device comprises a scaling system, a circulation system and a measurement and control system, wherein the scaling system comprises side walls, a width adjustment gate, a clamping plate frame, a rail, a bidirectional telescopic rod, a dual-slot gear box and the like; the circulation system comprises a water collecting tank, a water return pipeline, a water pump, a water feeding pipe, a water box and a flow stabilization cover; the measurement and control system comprises a triangular water measurement weir, an ADV three-dimensional flow velocity meter, a high-frequency digital camera, a water quality sensor and a data processor. According to the device, the three-dimensional scale of a model is scaled randomly by the fractal and the recombination of the side walls; riverway forms and boundaries are emulated by utilizing side wall bending and riverbed change; the device has an ingenious design and has the advantages of fast transformation, high efficiency, obvious scale mesoscopic effect and the like.