63 results about "Acid rain" patented technology

The invention relates to a composite cable, and relates to the technical field of cables, the composite cable comprises a conductor layer, a composite insulating layer, a waterproof layer, a weather-proof sheath layer and an armor layer from inside to outside in sequence, the conductor layer comprises at least six tinned copper conductors, the tinned copper conductors are symmetrically arranged in a regular hexagon shape, dielectric elastomers are filled among the conductors, and the dielectric elastomers are arranged between the tinned copper conductors. The composite insulating layer comprises an inner shielding layer, a main insulating layer and an outer shielding layer from inside to outside, the waterproof layer is a fluororubber extruded layer, the weather-proof sheath layer comprises a bonding transition layer and a weather-proof functional layer, and the armor layer is of a stainless steel band spiral wrapping structure. The composite cable can meet the requirement for high performance in a harsh environment and can show excellent performance under the extreme conditions of low voltage, large day and night temperature difference, strong ultraviolet rays, sand and dust abrasion, acid rain corrosion and the like.

The invention discloses a colored photovoltaic module which comprises a transparent colored glaze panel, a transparent bonding layer A, a battery layer, a bonding layer B and a back plate which are sequentially packaged in a stacked mode. The transparent colored glaze panel comprises a glass substrate, a transparent colored coating covering the outer side surface of the glass substrate, and a transparent glaze layer covering the outer side surface of the transparent colored coating; the transparent glaze layer is combined with the transparent colored coating through a covalent bond; the main component of the transparent glaze layer is silicon dioxide. The transparent colored coating of the colored photovoltaic module is positioned on the outer surface of the glass panel of the photovoltaic module, so that the defect of glass texture of a traditional photovoltaic module serving as a building material product is overcome; a transparent glaze layer with silicon dioxide as a main component is further arranged outside the transparent colored coating to serve as a protective layer, the adhesion fastness is high, the excellent performance of high hardness, high transparency, super weather resistance, acid and alkali resistance, scratch resistance and stain resistance is achieved, and the colored coating is effectively protected against color fading, falling off and external erosion such as acid rain, ultraviolet and sand wind.

The invention discloses a weather-resistant heat-insulation waterproof coating for an outer wall and a preparation method of the weather-resistant heat-insulation waterproof coating. The waterproof coating comprises the following components in parts by weight: 27-35 parts of modified acrylate polymer emulsion, 35-50 parts of composite filler, 5-10 parts of a curing system, 4-8 parts of a coalescing agent, 0.1-0.5 part of a defoaming agent, 0.3-0.8 part of a flatting agent, 0.2-0.6 part of a mildew preventive, 0.5-1.0 part of a thickening agent and 1-5 parts of a pH regulator, the modified acrylate polymer emulsion is prepared by carrying out pretreatment and silanization modification on cardanol and then carrying out monomer pre-emulsification and free radical polymerization. According to the waterproof coating provided by the invention, a Si-O-C network and a hindered amine free radical capture system are introduced, so that the weather resistance is improved; fluoride-nano silicon dioxide is used for constructing a roughness-low surface energy synergistic waterproof interface; acid-washed fly ash floating beads, silicon dioxide aerogel and expanded perlite filler are compounded to form multiple heat conduction scattering paths so as to realize cross-scale porous filler heat preservation; the waterproof coating can serve in complex environments with large temperature difference fluctuation, acid rain and the like.

The invention discloses an experiment device and method for dangerous rock mass collapse induced by earthquake-excavation-acid rain coupling, and belongs to the technical field of geotechnical engineering simulation experiments, and the device comprises a counter-force supporting assembly, an earthquake dynamic disturbance simulation application assembly, an engineering excavation disturbance simulation application assembly and an acid rain corrosion and rainfall simulation assembly; the earthquake dynamic disturbance simulation applying assembly, the engineering excavation disturbance simulation applying assembly and the acid rain corrosion and rainfall simulation assembly are all arranged on the counter-force supporting assembly, and the slope dangerous rock mass model is located in the counter-force supporting assembly. The experimental device can simulate influence factors such as earthquakes, engineering excavation, acid rain corrosion, rainfall and river scouring, the influence factors can be combined at will to simulate the inoculation and induction process of dangerous rock mass collapse disasters under the coupling condition of the various influence factors, and an experimental conclusion is obtained on the basis. The method can reflect the inoculation and induction mechanism of the dangerous rock mass collapse disaster more truly, and provides technical support for the prediction and forecast of the dangerous rock mass collapse disaster.

The application discloses a waterproof coating for outer wall weather resistance, heat insulation and heat preservation and a preparation method thereof. The waterproof coating comprises the following components in parts by weight: modified acrylate polymer emulsion 27-35 parts, composite filler 35-50 parts, curing system 5-10 parts, film forming aid 4-8 parts, defoaming agent 0.1-0.5 parts, leveling agent 0.3-0.8 parts, mildew-proof agent 0.2-0.6 parts, thickening agent 0.5-1.0 parts and pH regulator 1-5 parts. The modified acrylate polymer emulsion is prepared by pretreating and silanization modifying cardanol, monomer pre-emulsification and free radical polymerization. The waterproof coating provided by the application introduces Si-O-C network and hindered amine free radical capture system to improve weather resistance; fluorine compound-nano silicon dioxide constructs roughness-low surface energy synergistic waterproof interface; acid washing fly ash floating beads, silica aerogel and expanded perlite filler are compounded to form multiple heat conduction scattering paths to realize cross-scale porous filler heat preservation; and the waterproof coating can serve in complex environments such as large temperature difference fluctuation and acid rain.

A slurry reactor liquefied gas desulfurization device and a desulfurization method thereof relate to the technical field of liquefied gas treatment, and comprise a fixed bed reactor, a mercaptan removal tank, a water washing tank, an alkali liquor oxidation tower and an alkali liquor tank, a top inlet of the fixed bed reactor is communicated with liquefied gas obtained by desulfurization of a lean amine solution through a pipeline, a bottom outlet of the fixed bed reactor is communicated with a top inlet of the mercaptan removal tank through a pipeline, and a top outlet of the mercaptan removal tank is communicated with a top inlet of the washing tank through a pipeline; an outlet in the top of the washing tank is communicated with a refined liquefied gas pipe network through a pipeline; a bottom outlet of the mercaptan removal tank is communicated with a bottom inlet of the alkali liquor oxidation tower through a pipeline, a bottom outlet of the alkali liquor oxidation tower is communicated with a top inlet of the mercaptan removal tank through a pipeline, and one side of the lower end of the alkali liquor oxidation tower is connected with an air inlet pipeline; according to the method, mercaptan in liquefied gas can be removed, sulfur dioxide is prevented from being generated after combustion, acid rain and air pollution are reduced, meanwhile, consumption of alkali liquor can be reduced, and the discharge amount of waste alkali liquor is reduced.

The invention belongs to the technical field of pollution treatment, and particularly discloses a method for evaluating the long-term stability of repaired heavy metal polluted soil. The method comprises the following steps: crushing and sieving the treated heavy metal polluted soil to obtain a sample, and then mixing the sample with different acid rain accelerating solutions; continuously oscillating the mixture for a preset time length to obtain a mixed solution of a single acceleration test; circularly executing an acceleration test on the mixed solution, and determining the concentration Ci and the chemical form distribution characteristics of the heavy metal element after each time of completion; based on the environmental background values Bi and Ci, calculating a heavy metal polluted soil stability index Ei = Ci / Bi, and constructing a long-term stability index model EN; setting a long-term stability grading standard, and evaluating the long-term stability grade of the repaired heavy metal polluted soil according to the Ei and the EN by comparing the standard. According to the method, the durability of the remediation effect can be accurately quantified, and the problem of risk quantification of reactivation of the heavy metal contaminated soil is effectively solved.

The utility model belongs to the technical field of photovoltaic power generation, and relates to a flexible photovoltaic support. A flexible photovoltaic support based on a composite material comprises a support base structure and a flexible inhaul cable structure. The two ends of the flexible inhaul cable structure are fixed to the support base structure. The flexible inhaul cable structure is composed of a flexible inhaul cable and a flexible conversion connecting piece, the flexible inhaul cable comprises three sections, the middle section is a carrier cable, the two end sections are anchoring inhaul cables, and the carrier cable and the anchoring inhaul cables are connected through the flexible conversion connecting piece. By utilizing the characteristics of corrosion resistance, insulativity, light weight, high strength and the like of FRP and other materials, the service life of the bracket is prolonged, and the bracket has extremely strong adaptability to complex environments, such as non-flat fields, slopes, mud flats, high-pressure environments, saline-alkali soil, acid rain corrosion areas and the like.

The invention relates to the technical field of building composite materials, in particular to a weather-resistant reinforced plastic steel tile and a preparation method thereof. The weather-resistant reinforced plastic steel tile provided by the invention is prepared from the following raw material components: a polyvinyl chloride resin matrix, a glass fiber reinforced material, filler, nano silicon dioxide, adsorption type calcium carbonate, a titanium-carbon hybrid weather-resistant agent and a synergist. Acid etching ions are selectively captured through a zeolite molecular sieve of adsorption type calcium carbonate to improve the acid resistance of the plastic steel tile, an ultraviolet shielding net is constructed in cooperation with a titanium-carbon hybrid weather-resistant agent, meanwhile, chlorine free radicals and active oxygen can be captured through a synergist, and embrittlement caused by oxidation and ash formation of carbon black is prevented. And the service life of the plastic steel tile is prolonged under the conditions of acid rain, ultraviolet and cold and hot cycles.

The invention discloses a high-strength corrosion-resistant overhead insulated wire and a manufacturing process and application thereof, and belongs to the technical field of power transmission. The wire adopts a multi-layer structure design of a high-strength aluminum alloy conductor core (containing 0.3%-0.8% of copper, 0.5%-1.2% of magnesium and 0.2%-0.6% of silicon), a cross-linked polyethylene inner insulating layer, an aramid fiber and stainless steel wire net composite reinforcing layer (the layer number ratio is 2: 1), and a corrosion-resistant outer insulating layer (a surface microscopic concave-convex structure) added with nano zinc oxide / titanium dioxide filler (3%-5%); the problems that a traditional wire is insufficient in strength and prone to corrosion and aging are solved in cooperation with electromagnetic stirring smelting, precise temperature control extrusion and other processes. Experiments show that the tensile strength of the lead reaches 350-420 MPa, the direct-current resistivity is low, the insulation resistance retention rate in the salt mist / acid rain / ultraviolet environment exceeds 92%, the lead is suitable for high-voltage power transmission and medium-voltage power distribution systems, the service life can be remarkably prolonged, and the maintenance cost can be reduced.

The utility model discloses a soil experiment testing device, which comprises a support frame, the sealing assembly is assembled on the top of the supporting frame and used for providing sealing; the acid rain steam treatment assembly is assembled in the sealing assembly; according to the device, acid rain to be treated is put into the acid rain containing box in the sealing box, and the sealing box is fixed to the top of the supporting frame. The first box door and the second box door can be movably opened, so that operation and maintenance are facilitated. The perspective box door allows observation of internal conditions. The acid rain steam treatment assembly is installed in the sealing box and comprises an installation plate, a protective cover and a heating lamp are fixed to the bottom of the installation plate, and the heating lamp is located in the protective cover and used for heating acid rain. The fan is mounted at the bottom of the mounting plate and used for promoting air flow. The guide slope is fixed to the top of the inner surface of the sealing box and guides acid rain to flow to the acid rain containing box. Through the design, the acid rain steam treatment assembly can effectively treat acid rain, and meanwhile the safety of operators is protected.

The invention provides a cement waste incineration fly ash cementing solid waste negative carbon baking-free building block, and relates to the technical field of baking-free building blocks. The cement waste incineration fly ash cementing solid waste negative carbon baking-free building block is prepared from the following components in parts by weight: 30 to 40 parts of building solid waste, 30 to 35 parts of waste incineration fly ash, 35 to 40 parts of cement, 10 to 13 parts of compacting agent, 20 to 25 parts of fluorocarbon resin, 5 to 7 parts of steel fiber and 40 to 50 parts of water, the compacting agent is any one of an organic silicon compacting agent and a crystal permeable compacting agent. The surface of the baking-free building block is coated with fluorocarbon resin, the fluorocarbon resin reacts with moisture and oxygen in the air to form a protective film, a layer of uniform and compact protective film can be formed on the surface of the baking-free building block, so that permeation of moisture and other liquid is prevented, in addition, the fluorocarbon resin has extremely high resistance to corrosive substances such as acid, alkali and salt, and the baking-free building block has the advantages that the baking-free building block is not prone to cracking. Acid rain can be effectively handled, and the water resistance of the baking-free building block is improved.

The invention relates to the technical field of sewage treatment equipment, and discloses a sewage treatment device for sewage purification treatment, which comprises a bottom box, a treatment box is arranged in the middle of the top end of the bottom box, and the bottom of the treatment box is communicated with the interior of the bottom box; the dynamic filtering mechanism is arranged in the treatment box and is used for dynamically separating and filtering the acid rain sewage discharged into the treatment box and soil and impurities contained in the acid rain sewage. By adding and arranging the dynamic filtering mechanism, when rain sewage is treated, on one hand, the mechanism can dynamically separate impurities in the rain sewage in a manner of matching rotation and vibration, so that the separation efficiency of various impurities and the rain sewage is remarkably improved, and on the other hand, in the process of continuously rotating, filtering and separating, the impurities in the rain sewage can be effectively separated. Sewage entering the stainless steel ring filter screen is used for backwashing impurities intercepted or adhered on the filter screen, so that the pores of the filter screen are prevented from being blocked, and the stable filtering flux is ensured.

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 provides a clear topcoat for transportation vehicle components, comprising the following components: silicone-modified fluorocarbon resin, HDI-blocked isocyanate, IPDI-blocked isocyanate, hexamethoxymethylmelamine-formaldehyde resin, light stabilizer, adhesion promoter, silicone-modified polyacrylate solution, and organic solvent. The HDI-blocked isocyanate crosslinking product exhibits excellent weather resistance, moderate hardness, and flexibility; the IPDI-blocked isocyanate crosslinking product possesses excellent resistance to acid rain and weathering, but the coating is slightly brittle and hard; the hexamethoxymethylmelamine-formaldehyde resin crosslinking product has good toughness and excellent adhesion to the base coat, but slightly poor acid rain resistance; the combined crosslinking product of these three components exhibits good weather resistance, acid resistance, stain resistance, and interlayer compatibility. This invention also provides a method for preparing and applying this clear topcoat for transportation vehicle components.

The invention provides a steel rail bottom multi-factor coupling corrosion simulation experiment device and method, relates to the technical field of durability testing of rail traffic materials, and aims to solve the problems of fragmentation of environment simulation, low acceleration efficiency and one-sided data acquisition in the prior art. The device comprises an environment simulation subsystem which is used for simulating soil, salt mist, acid rain, ultraviolet and temperature and humidity environments of rail bottom service of a steel rail; the dynamic loading subsystem is used for simulating the dynamic load of the train on the rail bottom of the steel rail; and the monitoring and control subsystem is used for synchronously acquiring multi-dimensional data and realizing system control. According to the experimental method, the corrosion-failure behavior of the rail bottom of the steel rail in a complex service environment can be accurately evaluated through staged setting of environmental parameters, loading of a load spectrum and judgment of a failure threshold value, and data support is provided for research and development of high-corrosion-resistance steel rail materials, protection technology optimization and line operation and maintenance decision making.

The invention provides a permanent factory nameplate of a railway wagon and a mounting method thereof, the permanent factory nameplate of the railway wagon comprises a stainless steel plate base body, and nameplate information is arranged on the stainless steel plate base body; the nameplate information adopts one or more of laser cutting hollow fonts, etching concave paint filling fonts, casting fonts or mould pressing fonts; the permanent factory nameplate of the railway wagon is fixed to a non-replacement area of the railway wagon in an all-welding mode. The permanent factory nameplate for the railway freight car is simple and economical in structure, can adapt to severe environments such as high humidity, salt mist and acid rain, meets the service life-cycle service requirement of 25 years, ensures that manufacturing information managed in the service life-cycle of the car is complete, and can well adapt to the existing railway freight car.

The invention provides a resin emulsion building material, relates to the technical field of building materials, aims to solve the problem of poor comprehensive performance of existing building materials, and adopts the technical scheme that the resin emulsion building material comprises a resin emulsion and a primer, the resin emulsion is prepared from emulsion, a silicon solution, wollastonite, alcohol ester dodecyl carbonate, ethylene glycol, a thickening agent, purified water, a mildew preventive, a defoaming agent, a suspending agent and water; the primer is prepared from alkali-resistant emulsion, a silicon solution, wollastonite, alcohol ester dodecyl carbonate, ethylene glycol, a thickening agent, purified water, a mildew preventive, a defoaming agent, natural sand excavation, a sterilizing agent and a dispersing agent. After the polymeric material is dispersed, the paint has the comprehensive properties of tear resistance, alkali resistance, water resistance, high temperature resistance, temperature change resistance and the like, the situations of cracking, shelling and the like cannot occur even after long-time acid rain, solar ultraviolet irradiation or alkaline substance corrosion, a wall body is protected, and meanwhile, the service life of a coated building surface is prolonged.

The invention discloses a cable connector with a self-locking function, and relates to the technical field of cable connectors. The device comprises a male end and a female end, a first cable is fixed in the male end, a second cable is fixed in the female end, self-locking assemblies which are mutually locked are arranged on the outer wall of the male end and the outer wall of the female end, protection devices are arranged on the outer wall of the male end and the outer wall of the female end, and each protection device comprises two track frames. The two track frames are fixed to the outer wall of the male end and the outer wall of the female end correspondingly, and protective frames are slidably mounted at tracks of the two track frames correspondingly. Through cooperation of the rail frame, the protection frame, the vertical plate, the rail block, the moving column, the U-shaped block, the moving frame, the L-shaped block, the arc plate, the male end, the female end, the first cable and the second cable, the problems that acid rain is located at the male end and the female end for a long time, oxidation and corrosion of the surfaces of the male end and the female end are accelerated, and the service life of the male end and the female end is shortened are solved.

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.

The invention discloses a high-performance water-based environment-friendly anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. Comprising the following raw materials: water-borne epoxy resin E-44, modified polysulfide rubber, a functional silane coupling agent, water-borne acrylic resin, 200-mesh glass flakes and wollastonite powder. Coating the heavy calcium powder with zinc phosphate and nano silicon dioxide; a silane coupling agent, microencapsulated castor oil and a plant antibacterial extracting solution are added; the cleaning agent is prepared from an isothiazolinone derivative, a benzimidazole preservative and sodium polyphosphate. The acid-rain-corrosion-resistant antibacterial coating is excellent in acid resistance, weather resistance, scouring resistance, construction convenience and the like, meanwhile, by optimizing the formula and selecting the raw materials, the cost is effectively reduced on the premise that the performance is guaranteed, and the acid-rain-corrosion-resistant antibacterial coating is suitable for industrial building outer walls, smelting enterprises, chemical equipment and other scenes needing long-term acid rain corrosion resistance and antibacterial protection.

Embodiments of the present disclosure provide an acid rain observation quality evaluation method and device, equipment and a storage medium, which are applied to the meteorological monitoring technical field. The method comprises: obtaining laboratory measurement data and to-be-evaluated measurement data reported by multiple stations; the to-be-evaluated measurement data and the laboratory measurement data comprise multiple pH values and conductivities; the pH values and the conductivities are arranged in ascending order respectively to obtain a pH array and a conductivity array; the standard value and the standard deviation of the pH array and the standard value and the standard deviation of the conductivity array are calculated, and the abnormal value elimination processing is performed on the pH array and the conductivity array respectively, the corresponding standard value and the standard deviation are updated, and the to-be-evaluated measurement data reported by the stations is evaluated. Therefore, the system can be comprehensively evaluated, close to the real natural environment, and unified standard, and problems existing in the station instrument or personnel operation can be accurately found, which is beneficial to improving the acid rain observation quality of the entire observation station network.

The utility model discloses a portable concrete acid rain damage detection device which is characterized in that the portable concrete acid rain damage detection device comprises a base, comprising an iron pull rod, a plastic handle, an absorption switch, a power supply, a stainless steel outer cylinder, a stainless steel inner cylinder, a hard steel tip, a hard iron wire, a strong spring, a collection area, an air inlet area, an exhaust area, a high-grade filter layer, an intermediate filter layer, a primary filter layer, a strong electric motor, a fan, a hit cylinder, a bearing, a to-be-tested concrete test block and concrete test block chippings. The device is totally divided into two parts, namely an impact device and a collection device, is simple and easy to operate, has low professional requirements on detection personnel, and can accurately evaluate the damage degree of the concrete test block, so that the workload of detecting the damage degree of the concrete corroded by acid rain is greatly reduced.

The utility model discloses a molten salt furnace for realizing rapid denitration treatment of flue gas, and particularly relates to the technical field of molten salt furnaces, the molten salt furnace comprises a molten salt furnace main body, one side of the upper end surface of the molten salt furnace main body is connected with a feed hopper, and one side of the feed hopper is connected with a smoke outlet pipe positioned on the upper end surface of the molten salt furnace main body; a smoke outlet of the smoke outlet pipe is provided with a denitration structure, the outer portion of the molten salt furnace body is fixedly connected with a supporting bottom frame, the middle position of the lower end face of the molten salt furnace body is connected with a discharging pipe with a switch valve, and the denitration structure comprises a denitration box connected to the upper end face of the smoke outlet pipe. According to the utility model, the denitration structure is arranged, and a sodium hydroxide solution is atomized into fine particles in a spraying manner to be sprayed out to be in contact with flue gas, so that the fine particles can rapidly react with nitrogen oxides in the flue gas in a short time, rapid denitration is realized, the emission of nitrogen oxides can be reduced, and the content of nitrogen oxides in the flue gas can be effectively reduced; the harm of acid rain, photochemical smog and the like after entering the atmosphere is avoided.

The invention provides a method for carrying out in-situ solidification and stabilization repair on a heavy metal combined pollution site, particularly relates to a method for synergistically fixing pollution of heavy metals such as cadmium, lead and arsenic by utilizing a modified fly ash compound material, and simultaneously solves the problem that common fly ash is easy to cause secondary dissolution of heavy metals under acid rain leaching or oxidation conditions. Through combination of two modification technologies, high-efficiency long-term stabilization of heavy metals is realized: firstly, phosphate-organic acid is adopted to modify a fly ash gel material, so that the chelating precipitation effect on heavy metal ions is enhanced, and the fixing capacity of the heavy metals in soil is improved; secondly, a ferrous sulfide modified fly ash zeolite core-shell structure material is adopted, and sulfide precipitation and a reduction barrier are used for inhibiting release of heavy metal in an acidification oxidation environment; the method is suitable for in-situ remediation of various heavy metal combined pollution scenes such as mining areas, smelting plants and electronic waste disassembly areas, and has good environmental and economic benefits.

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.

The present application relates to power transmission channel protection monitoring technical field, specifically a kind of power transmission channel risk three-dimensional visual positioning device, including visual monitoring component, its outside is provided with protective shell, the top and outside of protective shell are equipped with the vent hole for heat dissipation, protective shell end is embedded with the glass plate for monitoring component observation outside world, further including the protection mechanism for the protection of visual monitoring component when idle, protection mechanism includes sealing plate, is set in the periphery of vent hole, when idle, sealing plate is sealed vent hole, prevent sand and other sundries into protective shell, when special weather suspends monitoring, adjust motor transmission pulls sealing plate and seals vent hole, prevent sand or acid rain and other dirt into protective shell, reduce the possibility that monitoring component heat dissipation performance drops or is damaged, simultaneously, two groups of sliders are driven by two-way screw rod, protective cover is mutually close, two protective cover are sealed, prevent sand or acid rain and other dirt contact glass plate, extend the replacement cycle of glass plate.

The utility model discloses a wear-resistant and corrosion-resistant steel pipe, belongs to the technical field of steel pipes, and aims to solve the problems that the surface of the steel pipe is gradually rusted and corroded when the steel pipe is in corrosive environments such as humid air, acid rain and soil for a long time due to the absence of a wear-resistant and corrosion-resistant structure for the steel pipe in the prior art. And when the inside and the outside of the steel pipe are scratched by materials or other objects, scratches, pits and other undesirable phenomena are possibly formed, so that the smoothness and the integrity of the steel pipe are influenced, and when the follow-up friction resistance is further increased, the abrasion speed of the steel pipe is increased, so that a vicious circle is formed. Comprising an outer pipe, mounting mechanisms are mounted at the two ends of the outer pipe, a wear-resistant and corrosion-resistant mechanism is mounted inside and outside the outer pipe in a combined mode, the wear-resistant and corrosion-resistant mechanism comprises a pressure-resistant protection assembly, a rubber layer and a supporting pressure-resistant block, a middle-mounted partition pipe is arranged on the inner side of the rubber layer, and an inner pipe is arranged on the inner side of the supporting pressure-resistant block. The pressure-resistant protection assembly is installed on the inner side of the outer pipe.

Disclosed in the present application are a transparent colored-glazed panel and a colored photovoltaic module. The transparent colored-glazed panel comprises a glass substrate, a transparent colored coating covering the outer surface of the glass substrate, and a transparent glaze layer covering the outer surface of the transparent colored coating; the transparent glaze layer is covalently bonded to the transparent colored coating; and the main component of the transparent glaze layer is silicon dioxide. In the present application, the transparent colored coating of the colored photovoltaic module is located on the outer surface of the glass panel of the photovoltaic module, thus overcoming the defect of glass texture of traditional photovoltaic modules used as building material products; the transparent glaze layer with silicon dioxide as the main component is further arranged as a protective layer outside the transparent colored coating, and has excellent properties comprising high hardness, high transparency, excellent adhesion, super weatherability, acid and alkali resistance, scratch resistance and stain resistance, thus effectively protecting the colored coating from fading, peeling and external corrosion caused by acid rain, ultraviolet, and wind and sand.