46 results about "Water aging" patented technology

The invention provides an antiaging glass fiber-reinforced polycarbonate composition, which comprises the following components in part by weight: 20 to 70 percent of polycarbonate resin, 10 to 35 percent of acrylonitrile-butadiene-phenylethylene polymer, 5 to 40 percent of polyethylene graft, 10 to 30 percent of glass fiber reinforce, 0.3 to 0.5 percent of coupling agent, 0.5 to 3 percent of lubricating agent and 0.1 to 1.0 percent of antioxygen. The polycarbonate composition of the invention is free from surface floating fibers has good glossiness, high mechanical performance, high size stability and high thermal resistance. The anti-boiling water aging performance of the polycarbonate composition is improved greatly. The polycarbonate composition can be widely used in electronic and electrical elements such as electrical tool shells, machine bodies, brackets, external gears, three-way valves, mechanical pump parts and the like and is particularly suitable to be used as engineering plastics for use in wet or hot water environments.

The invention discloses a city water supply pipe network-based artificial water quality monitoring point addressing method comprising the following steps: simulating pipe network waterpower operation,and combining the road network so as to realize meshing partition of the water supply pipe network whole area; calculating the resident water consumption condition in each mesh; determining the pipenetwork artificial water quality monitoring point number in each mesh; determining distribution state of network users in each corresponding block; calculating the water age of different locations inthe city water supply area and the water age of network users in each mesh; determining special pipe network water quality monitoring points; making big data statistics, analysis, conclusion, ranking,and integrating for the user water consumption on the basis of water meter information, and primarily spotting drafted pipe network artificial water quality monitoring points complying with basic conditions; analyzing one by one via the pipe network waterpower simulation, and determining the final pipe network artificial water quality monitoring points. The method can scientifically and reasonably determine city pipe network water quality monitoring point layout, thus ensuring the representativeness of the water quality monitoring, effectively handling the water quality changes in the water supply pipe network, and providing guiding meanings for optimizing operation and management of the pipe network.

The invention discloses an asphalt water-aging test method. The method comprises the steps that: required asphalt samples and equipments are prepared according to a pressure-aging-vessel-accelerated asphalt aging test specified by highway engineering asphalt and asphalt mixture testing procedures; when the samples are prepared, 10g of water is added into each sample disk; before pressure adjusting, steam with a pressure of 0.2MPa is delivered in, and a total pressure is then adjusted to 2.1MPa according to a method specified by the procedures; when the test is finished, the hot residues in the disks are poured into a vessel; the residues are heated and stirred, such that the gas bubbles are removed, and a performance test can be carried out immediately; the performances of the asphalt obtained by the test is compared with the performances of original non-aged asphalt and the performances of aged asphalt obtained by merely the pressure-aging-vessel-accelerated asphalt aging test, such that the water-aging degree of the asphalt can be accurately determined. With the testing method provided by the invention, the test data is accurate and reliable, the test method is simple and feasible, and the testing is convenient. Therefore, the method has a good popularization value.

The invention relates to a bench-scale device of a water supply pipe network microbiological test. The device mainly comprises a water tank (28), a water inlet main pipe (30), a water outlet main pipe (29), a branch pipe a (25), a branch pipe b (26) and a branch pipe c (27), wherein the water tank (28) is connected with the water inlet main pipe (30) in series; two ends of each of the branch pipe a (25), the branch pipe b (26) and the branch pipe c (27) are connected with the water inlet main pipe (30) and the water outlet main pipe (29) in parallel. Compared with the prior art, the device disclosed by the invention can be used for realizing comprehensive study on micro-organisms in pipe wall and pipe network water under the conditions of different raw water, different pipe materials, different hydraulic conditions, different water ages, different disinfectants and the like.

The invention relates to the field of water environment simulation, and discloses a two-dimensional mesoscopic numerical value simulation method of the water age of surface water. A lattice Boltzmann method is combined with a concept of the water age, the water age can be calculated from the essence of particle movement, and therefore, a model can more accurately and efficiently simulate water quality. A hydrodynamic force-water age model is applied to the Danjiangkou reservoir, so that the water quality variation trend of the Danjiangkou reservoir can be predicted, a relocation diffusion rule of pollutant in a water body can be obtained, an area where eutrophication may happen can be predicted, and a scientific basis is provided for reservoir management; through the cross fusion of the lattice Boltzmann method and water age calculation, two water age simulation methods, i.e., an Eulerian method and a Lagrange method, on the basis of the lattice Boltzmann method are developed; a calculated amount generated when the Lagrange method is used for calculating the water age is lowered, the feasibility of the method is increased, and meanwhile, the development of the lattice Boltzmann method in the field of water quality models can be accelerated; and the lattice Boltzmann method is applied to the calculation of the water age of the Danjiangkou reservoir and is further tightly combined with practical research.

The invention provides a method for researching spawning ground positions of river drifting egg spawning fish. The method comprises the following steps of framing spawning riverway ranges; establishing one-dimensional water age simulation models, wherein an unsteady flow process simulation module carries out verification through utilization of actually measured data; laying out fish egg monitoringsections; recording fish egg sampling points, and carrying out gene sequencing to obtain development time when fish eggs are sampled; replaying unsteady flow processes in spawning periods through utilization of the one-dimensional water age simulation models; substituting the sampling points of the fish and the development time when the fish eggs are sampled into the model, obtaining the development time when the fish eggs are sampled through water age space distribution and the gene sequencing, and reversely researching a spawning position of each fish egg; and carrying out statistic analysis on spawning position data of a great number of fish eggs, thereby obtaining main egg spawning grounds of the fish. According to the method provided by the invention, through utilization of the one-dimensional water age simulation models and a gene detection technology, the spawning ground positions of the river drifting egg spawning fish can be researched relatively precisely, so basis for fishhabitat research and protection can be provided.

The invention discloses an indoor aging method of rubber powder modified asphalt under joint effect of heat, oxygen and water. The method comprises the following steps of: (1) determining the pH value and the chloride concentration of the water; (2) sample preparation: pouring the molten rubber powder modified asphalt into a stainless steel flat-bottom disc; (3) short-term heat aging: aging in the asphalt test by use of a film oven; and (4) heat oxygen water aging: dividing the aging process into two stages: heat-oxygen-water aging and heat-oxygen aging. The method disclosed by the invention accurately reflects the change rules of the aging indexes of the rubber powder modified asphalt under the joint effect of multiple factors including heat, oxygen and water to obtain the heat-oxygen-water aging characteristics of the rubber powder modified asphalt, thus providing reference for the laboratory simulation of the rubber powder asphalt under the joint effect of heat, oxygen and water, providing theoretical basis and technical support for improving the road surface using quality of the rubber powder modified asphalt material and prolonging the service life, and also establishing a firm foundation for the development and application of the new material of rubber powder modified asphalt.

The invention belongs to the field of organic silicon sealing materials, and particularly relates to a two-component organic silicon sealant and application thereof in LOW-E hollow glass. The double-component organic silicon sealant comprises a component A and a component B, the double-component organic silicon sealant can form a stable bonding layer on the surface of LOW-E hollow glass, provide stable bonding strength, and achieve relatively high bonding strength under various aging conditions; and compared with common LOW-E hollow glass sealants on the market at present, the advantages are that: (1) normal-temperature cohesiveness and soaking aging cohesiveness are both subjected to 100% cohesive failure, and the strength retention rate is 90% or above; (2) water quality aging cohesiveness is less than 20% interface damage, and the strength retention rate is more than 75%; and (3) the high-temperature and high-humidity aging cohesiveness and the strength retention rate are obviouslysuperior to those of the existing products in the market.

The invention discloses a method for implementing DMA (direct memory access) partitioning of a water supply network in a minimum pressure reduction space, which comprises the following steps of: firstly, defining a similarity calculation formula between nodes, and then optimizing a coefficient in the similarity formula through a function gametiobj in MATLAB (matrix laboratory) so as to determine a partition boundary pipe section. Then, different minimum service water pressures are set and serve as constraint conditions respectively, the average water age of nodes after partitioning and the partitioning cost serve as targets, a function gametiobj is applied to obtain equipment arrangement schemes on multiple boundary pipe sections, and the optimal arrangement scheme is screened out from the equipment arrangement schemes through three principles. And finally, finding out an optimal pipe section replacement scheme by using a simulated annealing algorithm, so that the water pressure of the partitioned pipe network can meet the requirement of specified minimum service water pressure. According to the DMA partitioning method provided by the invention, the overall water quality of the partitioned pipe network cannot be greatly influenced on the basis of successfully completing partitioning, and a certain theoretical basis can be provided for quickening implementation of DMA partitioning, reducing the leakage rate of the pipe network and building an intelligent water supply system for water supply companies in various regions.

The invention relates to a multi-target partitioning method for water supply pipe networks. The method comprises the following steps of: (1) inputting data of a water supply pipe network, comprising an adjacency matrix of the water supply pipe network, a permitted scale range of partitions and node service pressure; (2) selecting main pipes and determining candidate partition entrances; and (3) setting a plurality of objective functions and solving a partitioning scheme set of the water supply pipe network by adopting a non-dominated sorting genetic algorithm, wherein the objective functions comprise: minimization of the average pressure of the pipe network, minimization of the average water age of the pipe network and minimization of the reconstruction cost of the partitioning. Compared with the prior art, the method disclosed by the invention has the advantages that the considered factors are more comprehensive and the partitioning is more reasonable.

The invention discloses a solidified cement sandwich plate, which comprises a cement mortar layer, a honeycomb aluminum layer and fiber lattice cloth, wherein the cement mortar layer is divided into an upper mortar layer and a lower mortar layer; the upper mortar layer and the lower mortar layer are respectively solidified on the upper and lower surfaces of the honeycomb aluminum layer; a layer offiber lattice cloth fills in the two cement mortar layers; a crossing solidification layer is formed between the cement mortar layer and the honeycomb aluminum layer. The invention also discloses a preparation method of the solidified cement sandwich plate. The solidified cement sandwich plate and the method have the advantages that effects that the manufacturing process is simple; the money andequipment investment is low; the cost is low; the solidified cement sandwich plate made by the preparation method has the advantages of reduced water absorption rate, high intensity, good toughness, high durability and the like. Compared with a bonding mode using super glue, the solidified cement sandwich plate has the advantages that the environment-friendly effect is better; the intensity is higher; the bonding area of cement and honeycomb aluminum is deep and uniform, so that the influence of factors such as glue water aging, production glue coating nonuniformity, climate, temperature and humidity is effectively avoided.

The invention relates to a water age control system for secondary water supply equipment. The water age control system comprises a flowmeter, a liquidometer, an adjusting valve, a pressure meter, a water tank and a controller, wherein the controller is separately connected to the flowmeter, the liquidometer, the adjusting valve and the pressure meter; an intelligent analyzing engine is arranged inthe controller, collects water consumption data of a plurality of months and predicts a water consumption mode curve based on the water consumption data of the plurality of months; and the controllerjudges and classifies the water consumption nature by the water consumption mode curve, calculates a water storage curve of the water tank according to the water consumption mode curve, then acquiresa water inflow curve of the water tank according to the water storage curve and the water consumption mode curve, and controls the adjusting valve in real time according to a target water inflow. Itis ensured that tap water in the water tank is adjusted dynamically.

The invention discloses a water age measurement method for a semi-closed water area. The method comprises the following steps that: firstly, establishing the hydrodynamic force mathematical model of awater area to be measured; through the hydrodynamic force mathematical model, calculating the water depth and flow velocity information of each water quality point of the water area to be measured; constructing a convective diffusion mathematical model, and setting the boundary condition of the convective diffusion mathematical model; according to the hydrodynamic force mathematical model, calculating to obtain the water level and flow velocity information of each position of the area to be measured and the boundary condition of the convective diffusion mathematical model; calculating the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured through the convective diffusion mathematical model; according to the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured, calculating the instantaneous water age of each corresponding moment of each water quality point of the area to be measured; and finally, according to the instantaneous water age of each corresponding moment of each water quality point of the area to be measured, calculating a time average water age in each time period of each water quality point of the water area to be measured. By use of the method, the water age of the semi-closed water area can be efficiently, conveniently and accurately calculated.

The invention relates to a water age control system for direct drinking water purification equipment. The system comprises a flow meter, a liquid level meter, a regulating valve, a pressure meter, a water tank, a water age controller and a controller, and the flow meter is used for monitoring real-time water inlet flow; the liquid level meter is used for monitoring the real-time liquid level value of the water tank; the pressure meter is used for monitoring real-time pressure; the regulating valve is used for controlling the water inlet flow of the water tank; the water tank is used for storing direct drinking water; the controller is internally provided with an intelligent analysis engine, and the intelligent analysis engine collects water consumption data in a preset time period and trains a water consumption rule algorithm model based on the water consumption data in the preset time period. The controller obtains a future water consumption curve of a user according to the water consumption rule model, calculates a target liquid level in a future set time period according to the future water consumption curve of the user, and controls the regulating valve in real time through the water age controller according to the target liquid level. The problem of water age of direct drinking water equipment can be solved.

The invention relates to a road asphalt anti-aging agent and a preparation method thereof. The road asphalt anti-aging agent comprises the following raw materials by weight percentage: 5-20wt% of waste rubber powder, 5-20wt% of deoiled asphalt, 1-20wt% of catalytic oil slurry, 30-60wt% of aromatic hydrocarbon oil, and 5-40wt% of a stabilizer. Specifically, the stabilizer contains 5-30wt% of nano calcium carbonate, 15-55wt% of carbamide, 20-60wt% of an aromatic amine antioxidant and 5-40wt% of zinc oxide. The preparation method of the road asphalt anti-aging agent provided by the invention hasthe characteristics of low production cost and simple process. The road asphalt anti-aging agent prepared by the method has good intermiscibility with the matrix road asphalt, can effectively improvethe matrix asphalt's all-weather aging resistance, including ultraviolet light irradiation aging, temperature aging and water aging conditions.

The invention relates to the field of aquaculture, and discloses to a pollution-free carp breeding method. Starting from changing of the fish breeding environment and supplied feed, the growing environment of carp is kept in a balanced and healthy state to prevent water aging, inhibit the growth and reproduction of viruses, bacteria, parasites and other organisms harmful to the carp and enhance the immunocompetence of the carp, and the carp can resist the infection of epidemic diseases. According to the breeding method, traditional feed is improved, low-cost components are added in the feed, and the feed can play a role of promoting growth and strengthening constitution; the carp yield is increased by 23.2%, the death rate is decreased to 1.35%, the bred carp are natural and pollution-free, and reproduction of good varieties is promoted.

The invention discloses a waterproof structure for building expansion joints, which comprises: an elastic pad fixedly mounted on the expansion joint; a first waterproof component having a first drainage groove and a U-shaped first connecting portion; a second waterproof component, It has a second drainage groove and a U-shaped second connecting part. The structure of the second waterproof member is symmetrical to that of the first waterproof member. The first waterproof member and the second waterproof member pass through the first connecting part and the second waterproof member. The connecting parts are buckled together and fixedly installed on the elastic pad; after the first connecting part and the second connecting part are buckled together, there is a reserved gap between them. The invention can effectively solve the leakage problem caused by factors such as waterproof aging, shrinkage, cracking, and inconsistent foundation settlement coefficients, and solve the technical problem of anti-leakage of expansion joints in building spaces such as toilets, thereby effectively avoiding water leakage and damage in the later stage. A series of problems such as inconvenient maintenance can effectively reduce the cost of maintenance and repair in the later period and ensure the waterproof quality of construction.

The invention discloses a water age monitoring system and method for a water supply pipe network. The system comprises a basic data import module, a hydraulic model module, a water age calculation module, a pipe network monitoring data acquisition module, a data preprocessing module, a data feedback module and a data storage module. The water age monitoring system for the water supply pipe networkprovides services for a water supply enterprise, guides the water supply enterprise to take corresponding measures for areas with higher or lower node water ages, and provides the high-quality watersupply services for users.

The invention discloses a thin-layer pavement material suitable for wet road and bridge decks, which includes epoxy resin cement and wear-resistant aggregate, wherein the epoxy resin cement includes a mass ratio of 1:(0.5~ 0.85) of component A and component B; the component A is mainly composed of the following raw materials in proportion by mass: epoxy resin: 60-80, toughening agent: 5-15, reactive diluent 10-30 , coupling agent 0.5-1.5; the B component is mainly composed of the following raw materials in proportion by mass: curing accelerator 5-8, curing agent 92-95. Also disclosed is a preparation method for the thin-layer pavement material suitable for wet road and bridge decks. The pavement material can be applied to wet road and bridge decks, has good skid resistance, wear resistance, outstanding interface bonding performance, waterproof, low water absorption, good boiling aging resistance, and good durability.

The invention discloses a polyvinyl chloride (PVC) material for a high-speed data cable. The polyvinyl chloride material is characterized by comprising the following components in parts by weight: 100 parts of PVC resin, 32 parts of trioctyl trimellitate, 5 parts of a calcium zinc stabilizer, 8 parts of antimony sesquioxide, 0.4 part of a lubricant, 0.2 part of an antioxidant and 10 parts of a water-resistant modifier, wherein the water-resistant modifier is formed by coating 2 parts of nano barium sulfate, 5.7 parts of calcined kaolin and 2 parts of nano silicon dioxide with 0.3 part of a silane coupling agent; and the lubricant is selected from one or more of stearic acid, barium stearate, calcium stearate, paraffin and polyethylene wax. According to the PVC material, the data cable can be used in a water-soaked environment for a long term; the mechanical stability is good, the electrical performance is stable, and the water ageing resistance performance and the water tree forming resistance performance are achieved in a wet environment, so that the stability of the data cable is further improved and the service cycle of the data cable is further prolonged.

The invention discloses a method for testing the damp-heat aging performance of a coated fabric, which comprises the following steps of: testing the hot-water aging performance of the coated fabric bytaking hot water as a test medium and taking breaking strength, interlayer stripping force or joint strength as test characteristic values, and evaluating the aging performance of the coated fabric under damp-heat conditions. The limitation of a single factor of an existing aging test method is broken through, the influence of interaction of multiple factors such as high temperature, high humidity and water media is integrated, the simulation degree is high, and the data reproducibility is high; the sample designability is high, the aging performance of the material body can be tested, and the joint manufacturability can be tested and assessed; and the restriction that real and effective data cannot be obtained due to the fact that the heat sealing strength is larger than the breaking strength of a material body is broken through, a heat sealing joint stripping strength test scheme is designed, and the manufacturability and aging resistance of a heat sealing joint part are equivalently assessed.

The invention relates to a water age detection method based on a parallel primary model. The method comprises the steps of acquiring the water temperature and residual chlorine of outlet water of water supply and outlet equipment, and recording the acquisition time; carrying out a three-factor orthogonal experiment according to the collected water temperature, time and residual chlorine and the initial chlorine concentration, determining the attenuation rate of residual chlorine in the water outlet equipment, and the attenuation rate of residual chlorine comprising the rapid consumption rate of residual chlorine and the slow consumption rate of residual chlorine; establishing an Arrhenius relation model of the residual chlorine attenuation rate and the water temperature; establishing the parallel primary model according to the Arrhenius relation model to simulate the change conditions of residual chlorine and water age in the water body; and processing the parallel primary model by utilizing linear regression estimation, and approximately estimating the water age of the water outlet equipment under the condition that the current residual chlorine, the initial residual chlorine and the water temperature are known. According to the invention, intelligent and precise detection of the water age of drinking water in an urban water supply system can be realized.

The invention discloses a natural handmade soap. The handmade soap comprises the following components in parts by weight: 70-80 parts of soap grains, 10-15 parts of Sapindus chinensis extract, 3-8 parts of aged sepiolite, cocoamide 2-6 parts of propyl betaine; wherein, the extract of Sapindus chinensis is prepared according to the following method: take the dry Sapindus sativa fruit, soak in warm water equivalent to 5-10 times its weight, then boil and extract, Until the specific gravity of the obtained extract is 1.0-1.2, stop the extraction, filter, and obtain the extract of Sapindus chinensis; the sepiolite after the aging treatment is prepared according to the following method: take α sepiolite, pulverize, add water and age After 7-10 days, filter, add lime solution with a mass concentration of 1-1.5% to the obtained filter residue, soak for 7-10 days, filter, dry the filter residue, pulverize, and obtain. The handmade soap of the invention can effectively clean the skin and inhibit bacteria, and has less irritation to the skin.

The invention discloses an indoor simulated asphalt mixture aging method, which comprises the following steps: preparing asphalt mixture; performing short-term aging on the asphalt mixture; making a standard Marshall test piece, and then performing cooling and stripping; performing long-term aging; performing thermal oxidation Water aging; asphalt extraction experiment to obtain recycled asphalt; index test and component analysis of asphalt mixture and recycled asphalt; comparison of asphalt mixture and recycled asphalt data to obtain the aging degree of asphalt mixture. The invention provides an indoor simulated asphalt mixture aging method. According to the experimental method, the aging performance of the asphalt mixture can be evaluated, thereby providing theoretical guidance for practical engineering.

The invention discloses an indoor simulation asphalt mixture aging method. The method comprises the following steps: preparing an asphalt mixture; performing short-term aging on the asphalt mixture; manufacturing a standard Marshall test piece, and then performing cooling and demolding; carrying out long-term aging; carrying out hot oxygen water aging; performing an asphalt extraction experiment to obtain recycled asphalt; performing index test and component analysis on the asphalt mixture and the recycled asphalt; and comparing the asphalt mixture with the recycled asphalt data to obtain theaging degree of the asphalt mixture. According to the indoor simulation asphalt mixture aging method provided by the invention, the aging performance of the asphalt mixture can be evaluated accordingto the experimental method, so that theoretical guidance can be provided for actual engineering.

The invention belongs to the field of silicone sealing materials, in particular to a two-component silicone sealant and its application in LOW-E insulating glass. The two-component silicone sealant includes component A and component B. The two-component silicone sealant can form a stable bonding layer on the surface of LOW-E insulating glass, provide stable bonding strength, and It can achieve a very high adhesive strength retention rate under various aging conditions. Compared with the common LOW‑E insulating glass sealant on the market, it has the following beneficial effects: (1) Both the normal temperature adhesion and the water immersion aging adhesion are 100% Cohesive failure, and the strength retention rate is above 90%; (2) The aging adhesion of water purple is less than 20%, and the interface damage is less than 75%, and the strength retention rate is above 75%; (3) The high temperature and high humidity aging adhesion and The strength retention rate is significantly better than the existing products in the market.

The invention discloses a water age measurement method for a semi-closed water area. The method comprises the following steps that: firstly, establishing the hydrodynamic force mathematical model of awater area to be measured; through the hydrodynamic force mathematical model, calculating the water depth and flow velocity information of each water quality point of the water area to be measured; constructing a convective diffusion mathematical model, and setting the boundary condition of the convective diffusion mathematical model; according to the hydrodynamic force mathematical model, calculating to obtain the water level and flow velocity information of each position of the area to be measured and the boundary condition of the convective diffusion mathematical model; calculating the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured through the convective diffusion mathematical model; according to the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured, calculating the instantaneous water age of each corresponding moment of each water quality point of the area to be measured; and finally, according to the instantaneous water age of each corresponding moment of each water quality point of the area to be measured, calculating a time average water age in each time period of each water quality point of the water area to be measured. By use of the method, the water age of the semi-closed water area can be efficiently, conveniently and accurately calculated.