13 results about "Acid rain" patented technology

The application discloses a production process of a road guardrail corrugated beam, which comprises the steps of laser cutting, high-temperature forming and quenching, cutting and trimming, surface treatment and laser punching, etc.; the application cancels the galvanizing process, can reduce the zinc consumption of each ton of product, avoids the discharge of galvanizing wastewater (containing heavy metals such as zinc and chromium), adopts dry operation in the ultrasonic shot blasting process, has no dust pollution, and reduces dust emission compared with the traditional sand blasting process. The thin design makes the weight of the corrugated beam per unit length lower, and the production and transportation costs are also significantly reduced, and the application is especially suitable for installation operation in mountainous areas; the anti-corrosion feature makes the corrugated beam directly used in harsh environments such as coastal salt mist areas and industrial acid rain areas, can replace the traditional stainless steel galvanized guardrail, and the application range is expanded to high-corrosion scenes which cannot be covered by the traditional process.

Red rust staining of Al / Zn coated steel strip in “acid rain” or “polluted” environments can be minimised by forming the coating as an Al—Zn—Si—Mg alloy coating with an OT:SDAS ratio greater than a value of 0.5:1, where OT is the overlay thickness on a surface of the strip and SDAS is the measure of the secondary dendrite arm spacing for the Al-rich alpha phase dendrites in the coating. Red rust staining in “acid rain” or “polluted” environments and corrosion at cut edges in marine environments can be minimised in Al—Zn—Si—Mg alloy coatings on steel strip by selection of the composition (principally Mg and Si) and solidification control (principally by cooling rate) and forming Mg2Si phase particles of a particular morphology in interdendritic channels.

This invention relates to the field of hydroxyapatite technology and discloses aluminum phosphate-modified hydroxyapatite material and its preparation method, comprising the following materials: 1.32g diammonium hydrogen phosphate, 1.33g aluminum chloride, simulated weathering sample, and 200ml deionized water. The modified hydroxyapatite prepared by this invention, by adding an aluminum source during the original protection process, effectively improves the porosity, ultrasonic velocity, and strength of the weathered sample while ensuring aesthetic compatibility. Furthermore, its acid resistance is also improved, effectively enhancing the acid rain resistance of outdoor carbonate rock artifacts.

This invention discloses a method and system for low-temperature control of acid rain samples based on active temperature control and semiconductor refrigeration, belonging to the field of acid rain sample low-temperature control technology. The method includes the following steps: sample pretreatment and temperature control triggering, dynamic adjustment of PID control quantity and mapping of PWM signal, semiconductor refrigeration mode driving and execution, and feedback parameter updating and closed-loop control cycle. This invention pretreatment and packaging of acid rain samples into standard samples, collecting temperature data to determine whether temperature control is needed; during temperature control, according to a preset cycle, the PID control quantity is adjusted based on the temperature deviation and mapped to a PWM signal to drive the semiconductor refrigeration module to execute the corresponding mode, collecting and updating the temperature and updating the feedback variables, forming a negative feedback temperature control loop through cyclic execution. This improves the reliability of low-temperature control of acid rain samples and solves the problem of low reliability in existing technologies.

This invention belongs to the field of geotechnical engineering and geological disaster prediction technology, and particularly relates to an atmospheric coupled degradation simulation test system for slopes. It includes a slope model box, a non-uniform thermal radiation field simulation system, a multiphase seepage system, a dynamic stress loading system, and a control calculation system. The non-uniform thermal radiation field simulation system simulates the surface temperature gradient and mineral thermal expansion effect caused by solar radiation. The multiphase seepage system simulates acid rain, snowmelt seepage, and dissolution reactions. The dynamic stress loading system accurately simulates crack propagation under seismic wave action. This invention integrates non-uniform thermal radiation field, multiphase seepage, and dynamic stress loading into one system, constructing a system capable of simulating the real degradation process of slopes under complex natural environments. It achieves coupled simulation of the three stages of "surface thermal cracking - internal erosion - dynamic response," providing an efficient test platform for slope stability research under complex environments.

This invention relates to the field of fastener technology and proposes a corrosion-resistant stainless steel bolt and its preparation method. The corrosion-resistant stainless steel bolt is composed of the following raw materials by weight percentage: C≤0.03%, Cr 16.6%~17%, Mn 0.4%~0.6%, Ni 8%~9%, Mo 2%~3%, Si 0.4%~0.5%, P≤0.03%, S≤0.01%, N 0.12%~0.16%, with the balance being Fe and unavoidable impurities, wherein (Cr+Mo+N):Ni = 2.24~2.34:1. The stainless steel bolt of this invention maintains excellent corrosion resistance in harsh corrosive environments such as marine atmospheres, industrial acid rain, and high salt spray.

The utility model discloses voltage transformer wiring terminal's anti -flashover insulating sheath, specifically relates to voltage transformer technical field, including the porcelain tube of the wiring terminal conducting column outside, the outside of porcelain tube is provided with the umbrella skirt, and the both ends of porcelain tube outer wall all are provided with locking mechanism, and the inner wall of porcelain tube is provided with the function cover, and the function cover is composed of first insulating layer, first weather resistance layer and conducting layer, and first insulating layer, first weather resistance layer and conducting layer are sequentially arranged from outside to inside. The utility model discloses through setting up the function cover in the porcelain tube sheath inside, and the function cover is composed of three layers structure, can form the insulating barrier, blocks the current leakage and the whole flexibility is good, adapts the deformation of porcelain tube, reduces the risk of cracking, and can adapt to extreme temperature, avoids the corrosion of acid rain or salt fog, and can even electric field distribution, restrains partial discharge, prevents flashover, and the whole convenient with voltage transformer wiring terminal head on wiring terminal conducting column is connected.

This utility model discloses a segmented easy-to-apply car wrap, which relates to car wraps. The key technical points are: it includes a base layer, an adhesive layer, and a release layer. The release layer is divided into several release films, with an adhesive strip on the release film near the center, and the adhesive strip is covered by the release strip. This utility model solves the core pain points of large-area car wrap application being prone to wrinkles and cumbersome operation through segmented release films. The self-healing layer is a fluorocarbon self-healing coating, with fluororesin as the main film-forming substance, possessing a certain self-healing ability for scratches. Due to the high electronegativity of the introduced fluorine element and the strong carbon-fluorine bond energy, it has particularly superior properties, including excellent weather resistance, heat resistance, low-temperature resistance, and corrosion resistance. It also has unique non-stick and low-friction properties, thus preventing the car wrap from being corroded by acid rain, insect remains, tar, tree sap, and other stains. The fluorocarbon self-healing coating also has extremely low surface energy, allowing surface dust to be self-cleaned by rainwater, preventing dust and dirt buildup, and providing good stain resistance.

The utility model discloses a kind of water retaining structures of aluminium alloy windowsill, including windowsill and aluminium alloy window being installed on windowsill, aluminium alloy water retaining board is equipped with in aluminium alloy window bottom outside face, aluminium alloy water retaining board is equipped with aluminium alloy connecting component in windowsill corresponding, aluminium alloy connecting component bottom and windowsill fixed connection, aluminium alloy connecting component and aluminium alloy water retaining board outer end sealing connection, first cavity is formed between aluminium alloy connecting component and aluminium alloy water retaining board, the gap between aluminium alloy connecting component and windowsill is filled with weather-resistant sealant layer.The utility model aluminium alloy water retaining board and aluminium alloy connecting component are as protective layer, resist ultraviolet, acid rain etc. Through the oxide film on the surface of aluminium alloy, the service cycle is free from pulverization and discoloration, and the impact resistance is outstanding. The surface is free from cracking risk under normal use conditions, and also serves as a waterproof layer. The aluminium alloy connecting component module forms a complete protection system without the need for regular maintenance.

The present application relates to the field of atmospheric environment monitoring, and discloses a segmented monitoring system for the contribution of cloud-in and cloud-under to precipitation acidity and a monitoring method thereof, which comprises: a sensor module for collecting rainfall signals and particulate matter concentration changes, and recording cumulative rainfall signals; a detection unit for detecting the pH and conductivity of samples in different stages respectively; a detector protection unit for automatically performing pure water flushing, protective agent soaking and re-flushing processes in the non-sampling stage to maintain the stability of the pH and conductivity electrodes; a waste liquid collection unit for identifying the properties of the flushing waste liquid and guiding it to the external discharge channel or the waste liquid container according to the type, and having liquid level monitoring and alarm functions; and a numerical control unit for controlling the segmented determination and sample switching. The present application can quantitatively distinguish the contribution of cloud-in and cloud-under processes to precipitation acidity, and provides a scientific basis for acid rain cause analysis and regional pollution control.

A computer implemented method for selective diffusion of acid rain. A number of processor units identifies concentrations of acidic gases using a set of satellite images. The number of processor units locates hot spots on a land using the concentrations of acidic gases. The number of processor units classifies the hot spots on the land into vulnerable zones having vulnerable zone classifications. The number of processor units determines cloud seeding materials and alkaline compounds known for the vulnerable zones to selectively diffuse the acidic gases and cause precipitation in the vulnerable zones based on the vulnerable zone classifications for the vulnerable zones.

This invention discloses an aging test device for novel material optical lenses, belonging to the field of optical lens testing technology. It includes a test cabinet for testing automotive optical lenses, with a test stand installed inside. The top of the test stand is connected to the automotive optical lens via a steering seat. A test chamber is located at the center of the steering seat, and a photosensitive plate for testing the working condition of the automotive optical lens is installed within the test chamber. This invention, through the design of a pressure valve assembly and a spray head, allows corrosive water to be sprayed downwards through the spray head at low water pressure, simulating the erosion caused by everyday rainwater and acid rain. At high water pressure, a blocking ring partially blocks the spray holes, concentrating the water flow to simulate the high-pressure water impact during car washing. Simultaneously, the electromagnetic block and the redirecting magnetic block work together to dynamically adjust the spray angle, simulating water flow impacts from different directions.

The present application relates to the technical field of contaminated soil remediation, and discloses a composite reagent for neutralization and passivation remediation of antimony mine acid soil and application thereof, which comprises finely ground blast furnace slag powder, ferrous sulfate heptahydrate and carbide slag. The present application utilizes the solid phase micro-interface acid etching mechanism among the components to pre-activate the alumina tetrahedral site on the surface of the slag, eliminate the hydration induction period, and solve the kinetic mismatch problem caused by the difference in dissolution rate of the easily soluble iron salt and the insoluble slag in the soil remediation process. The present application builds a crystalline environment of poor sulfur calcium aluminate, makes the antimony acid root ions in the soil enter the mineral lattice as a structural replacement component, realizes atomic-level chemical solidification of the antimony pollutants, reduces the antimony leaching concentration of the remediated soil under the condition of acid rain leaching, and utilizes the trace reducing components of the carbide slag to synergistically inhibit the generation of highly toxic pentavalent antimony, thereby realizing long-term and safe remediation of the acid soil.