123 results about "Water conductivity" patented technology

A simple, effective and inexpensive water-quality measurement system comprises a housing suitable for travel on or in a body of water; one or more sensors for measuring water properties as the housing travels; a memory for storing information relating to the measured water properties; and software for processing measured properties. This invention combines into a single, inexpensive, and comprehensive system the sensors, computer hardware, signal-processing, Geographic Information System data, and Decision Support Software. This integration yields a system of novel and unparalleled utility. The water properties measured by the system may include: water temperature, water conductivity, pH level, dissolved oxygen, turbidity, water depth, salinity, total dissolved solids (TDS), ORP, chlorides, nitrates, and phosphates. A geographic information system (GIS) based on a global positioning satellite (GPS) technology is operative to determine geographic location and other factors, and an internal or external processor is operative to generate a map coordinating one or more of the listed characteristics to one or more of the water properties. A barometric pressure sensor may also be provided. In the preferred embodiment, the housing is a floating buoy.

The invention discloses a water conservation method for overlying strata water flowing fracture main channel through ground horizontal directional drilling grouting and sealing, which is suitable forthe technical field of water resource conservation in coal mining and mine water damage prevention and control. The method includes the following steps: firstly obtaining development characteristic information of the mined height of the overlying strata water flowing fractured zone in a tested area under specific mining conditions; then according to the development characteristic information, determining the distribution range of an aquiclude area of the overlying strata water flowing fractured zone communication stratum corresponding to the water flowing fracture main channel in the tested area; lastly, after determining position and orientation of the water flowing fracture main channel, constructing horizontal directional drilling on the ground and grouting and sealing the water flowingfracture main channel, thereby achieving the goal of reducing water conductivity of the fracture and conserving groundwater resources. The water conservation method has the advantages of simple steps, reliable effect and strong practicability.

The invention discloses a construction method of a tunnel waterproof and water drainage system, comprising the following steps: (1) preparing raw materials on a drainage layer; (2) injecting the drainage layer; (3) injecting a waterproof layer. The drainage layer and the waterproof layer of the invention all adopt the construction technology of injection. On the basis of water conductivity function, the drainage layer also has the functions of leveling and adapting to structural deformation, the waterproof layer adopts the construction mode of instantaneous film forming by ultraspeed curing and injecting, and the formed film is an integral structure, thus realizing that the integral structure is seamless and waterproof, the injection surface is free of flow, the film surface is smooth without bubbles and the construction produces no volatile organic compounds, simultaneously greatly improving the construction efficiency and reducing the labor intensity of workers.

The invention relates to a system and method for controlling the concentration ratio of an open type circulating cooling water system. The system for controlling the concentration ratio of the open type circulating cooling water system includes a control system and a cooling tower; a cooling tower water tank with a cooling tower water tank liquidometer is arranged below the cooling tower; the bottom of the cooling tower water tank is provided with a pollution discharge pipeline; the pollution discharge pipeline is provided with a circulating water conductivity meter, a circulating water temperature gauge, a pollution discharge electric control valve and a pollution discharge flowmeter; a water entering pipeline used for supplementing the cooling tower water tank with water is arranged above the cooling tower water tank; and the water entering pipeline is provided with a water supplementation flowmeter, a water supplementation conductivity meter, a water supplementation electric control valve and a water supplementation temperature gauge, wherein the water supplementation electric control valve is connected with the cooling tower water tank liquidometer. With the system and method of the invention adopted, automatic continuous and stable water supplementation and pollution discharge of the open type circulating cooling water system can be realized; automatic continuous on-line monitoring on the concentration ratio of circulating water can be realized; and concentration ratio fluctuation which is caused by intermittent water supplementation and pollution discharge of the circulating cooling water system can be avoided, so that the quality of the circulating water can be stabilized.

Methods and devices for measuring fluid properties include an electromagnetic sensor. The electromagnetic sensor includes a coaxial probe body having a first integral pressure barrier and a second integral pressure barrier formed from coaxial-feedthrough connector. The first integral pressure barrier and the second integral pressure barrier have a desired characteristic impedance.

The invention relates to a production method of superfine powder of magnesium hydroxide by distilling seawater. The method adopts desalted water as raw material. Calcium carbonate deposition is formed and separated out by adding precipitator carbonate. Then filtrate that contains magnesium is adopted as raw liquid and a proper amount of dispersant polyglycol 1000 is added, a mixture is formed. Then the mixture is driven into an ejector by a centrifugal pump and reacts with alkali solution in a static mixer. The alkali solution is driven by a metering pump from an alkali solution tank into the static mixer. A material, in which solid material content is more than 15 percent, is made by concentration through a 10-100nm ceramic ultrafiltration membrane. Then the material is washed until the washing water conductivity permeating the ceramic membrane is less than 200.0 Mus/cm. Finally, the slurry of magnesium hydroxide is dried by a spray drier. The technique of the invention is simple and has high automation degree, high profit, but low cost, and is easy to be operated, and overcomes the problem of low yield rate caused by the next two reasons that particle agglomeration of magnesium hydroxide can not be controlled and the fine particles can not be closured by adopting the conventional technique in prior art. Meanwhile, the concentration and the washing are realized in a ceramic ultrafitration membrane unit, and the problem of particle agglomeration of the magnesium hydroxide caused by the existence of large quantities of chloride ion is thoroughly solved.

The invention relates to a plate grid surface dip bonding liquid and a polar plate curing process method. A preparation method of the plate grid dip bonding liquid comprises the steps: heating pure water to 45-55 DEG C, then adding sodium perborate and antimony trioxide to dissolve, thus obtaining a solution, adding 8-15 kg of sodium perborate and adding 3-5 kg of antimony trioxide for each 100 kg of pure water, keeping the solution temperature at 45-55 DEG C, dipping a plate grid for 1-5 seconds, and then naturally drying for 20-40 minutes. The pure water conductivity rate is less than or equal to 2 [mu]s/cm. The invention aims to provide the plate grid surface dip bonding liquid and the polar plate curing process method, and is used for solving the problems of an interfacial resistance between the plate grid and a lead paste.

The invention discloses a high-efficient environmental-friendly treatment method of radioactive waste water. The high-efficient environmental-friendly treatment method comprises pretreatment, membrane separation and post treatment, wherein the pretreatment comprises sequentially performing activated carbon filtration and ultra filtration membrane filtration; the membrane separation is oxidized graphene-based composite membrane filtration, wherein an oxidized graphene-based composite membrane is prepared on a schistose porous carrier pre-modified by a silane coupling agent after oxidized graphene is compounded with polydopamine, and a membrane-layer two-dimensional water channel is smaller than 0.45nm; and the post treatment is second-class reverse osmosis treatment, water conductivity is smaller than or equal to 40<mu>s/cm through the second-class reverse osmosis treatment, and a discharging requirement of radioactive substances is met. The method disclosed by the invention not only can effectively remove the radioactive substances in the waste water, the stability is good, the operation is simple and the cost is low.

A sensor for measuring CO₂ in an ambient atmosphere, typically air in a room. The sensor body is inert to water and CO₂, and has a chamber proximate the atmosphere of interest. Pure water is placed in the chamber and separated from the atmosphere by a CO₂ permeable membrane to allow the atmosphere to pass into the water. Conductivity is measured and the concentration of CO₂ as a function of conductivity is displayed. Temperature is measured to further refine the measurement data.

The invention discloses a production method of non-oriented electrical steel. The method includes the steps of adopting roller type electromagnetic stirring on a secondary cooling section, opening all rollers for electromagnetic stirring, starting the electromagnetic stirring when the casting length is 7-9m and stopping the electromagnetic stirring after a casting machine stops casting, and controlling the water flow rate to be not less than 9 <3>/h and the pure water conductivity to be not more than 50mu in the electromagnetic stirring process. According to the method for improving the equiaxial crystal ratio of the non-oriented electrical steel, the roller type electromagnetic stirring is adopted in the secondary cooling section, the carbon content and nitrogen content of the non-oriented electrical steel are controlled, and therefore the equiaxial crystal ratio of non-oriented electrical steel products can be improved.

The invention relates to a boiler water quality detection device based on flow injection analysis and a soft-measuring technology. A distilled water container, a boiler water sample solution container and a standard acid solution container are respectively connected with a 16-way valve through a hose; the 16-way valve is orderly connected with a peristaltic pump, a 26-way valve, a conductivity electrode, a pH electrode, and a chloride ion electrode through the hose; the chloride ion electrode is connected with a liquid waste cup; and a central control system is connected with the 16-way valve, the peristaltic pump, the 26-way valve, the conductivity electrode, the pH electrode and the chloride ion electrode respectively. Signals of the conductivity electrode, the pH electrode and the chloride ion electrode in a flow injection analysis system are collected through a central data processing system to determine a plurality of water quality parameters such as water conductivity of the boiler, pH value, and chloride ion concentration; a voltage value signal can be measured by the boiler water quality detection device according to the pH electrode; and rapid and effective measurement on total alkalinity of boiler water can be achieved by the soft-measuring technology at the same time.

The invention provides a test piece deformation measurement device in a high-pressure water environment. The device comprises a metal sealing body, wherein a top plug is arranged at the upper end of the metal sealing body, an end plug is arranged at the lower end of the metal sealing body; a displacement sensor is arranged inside the metal sealing body; the upper part of the displacement sensor is provided with a sensor measurement rod; a transfer rod is arranged at the top end of the sensor measurement rod, and penetrates through the top plug; a linear bearing is arranged between the top plug and the transfer rod; and a lead wire hole is formed inside the end plug. The test piece deformation measurement device in the high-pressure water environment can be realized by adopting the metal sealing body which can endure the pressure action of water and be used for protecting the displacement sensor and by utilizing a mode of upper/lower spacing nut combination of an upper support and the transfer rod, so that the influence on the deformation measurement caused by water conductivity and high-pressure action can be overcome.

The invention discloses a water conductivity and turbidity sensor for a home appliance, which have multiple functions and can prevent washing water from leaking. The sensor has a shell with a cylindrical structure, wherein the front end part of the shell is provided with a water conducting groove (102); electrode terminal holes (103) which run through the shell are arranged on the two sides of the bottom part of the groove; electrode positioning grooves (104) are formed on parts, which correspond to the electrode terminal holes, on the shell; electrodes formed by connecting electrode plates (4) and electrode terminals (2) are provided, the electrode terminals are plugged into the electrode terminal holes, and the electrode plates are plugged in the electrode positioning grooves; sealing rings (6) are formed between the electrode terminals and the shell; a light emitting diode (7) and a light sensing triode (8) are arranged in the shell on the two sides of the groove (102) respectively; a printed circuit board (5) is arranged in the shell; and the light emitting diode, the light sensing triode and the electrode terminals are connected to the printed circuit board (5). The sensor is applicable to home appliances such as washing machines and dish-washing machines.

The water detection sensor includes a retrofit system such as a water-proof housing that selectively attaches to an exterior of a water conduit coupled at or near a dispense outlet of an emergency safety shower or emergency eyewash unit. The sensor may include a pair of guidewires that extend through the body of the water conduit and have a pair of respective electrodes that reside therein in non-conductive relation during an “off” or “no flow” condition. In an “on” or “flow” condition, the electrodes become immersed in water and can conduct electricity therebetween by way of the electrically conductive water medium. As such, a water conductivity circuit coupled thereto and disposed within the water-proof housing may relay a signal to a controller, which activates an audible or visual alarm that water is flowing through the emergency safety shower and/or the emergency eyewash unit.

The invention discloses a multipoint automatic conductivity monitoring device of pore water in soil. N sensors with identical structure are respectively connected with coaxial multiplexers at BNC joints via coaxial cable, the coaxial multiplexers are excited by electromagnetic wave and a receiver is connected with a PC computer. Each sensor includes external conductors of coaxial cables, internal conductors of coaxial cables, an epoxy resin box, a first test probe, a second test probe and a third test probe, wherein the second test probe is connected with the internal conductors of the coaxial cables; the first test probe and the third test probe are distributed on both sides of the second test probe at equal distance and are connected with the external conductors of the coaxial cables; and the connection joints are disposed in the epoxy resin box. The conductivity EC omega of pore water in soil can be monitored by PC software to evaluation the pollution degree of the soil. The method is specifically suitable for long-time remote-control multipoint monitoring in sanitary landfill under high corrosion condition, and has the advantages of rapid monitor, convenient operation and high automation degree.

The invention discloses moisture-holding landscaping for a roof shallow soil layer. The structure for the landscaping consists of a soil bin, a water storage tank, a cinder dosage bunker, and a clapboard between the soil bin and the water storage tank which are integrated or connected into a whole, wherein the soil layer in the soil bin and the water in the water storage tank pass through holes on the tank wall of the cinder dosage bunker communicated with the cinder auxiliary materials in the cinder dosage bunker up and down and left and right for transmitting water required by plants; the cinder auxiliary materials are a mixture of 60 to 90 percent of cinder auxiliary materials and 40 to 10 percent of clay or pure cinder auxiliary materials; the water conductivity range of the cinder auxiliary materials is that: the cinder auxiliary materials accounts for 5 to 80 percent of the volume of the water storage tank; and the landscaping can be started after the structure is examined or tested to satisfy the standard. The moisture-holding landscaping solves the problem that the conventional roof landscaping needs long-term and burdensome watering management, avoids water shortage of roof plants due to shallow soil, and solves the problem of roof leakage and bearing and the like through special technical processes. The structure for the landscaping has the advantages of simple structure, easy access of materials and auxiliary materials, less investment, convenient operation and certain economic and social benefits.

The invention discloses an electric-kettle water level detection method. An electric kettle comprises a host and a kettle body, a cavity is defined in the kettle body, and a water level detection head is arranged at the bottom of the cavity; the water level detection head is wrapped with an insulating material and the upper end of the water level detection head is exposed in the cavity; a coupler and a single-chip microcomputer are arranged on the host, and the coupler is connected with the single-chip microcomputer; the kettle body and the water level detection head are respectively connected with the single-chip microcomputer through the coupler, the kettle body, a medium in the kettle, the water level detection head and the like form an equivalent resistance and capacitance circuit, the single-chip microcomputer and the equivalent resistance and capacitance circuit is charged and discharged, water level is judged by the single-chip microcomputer according to charging time of the equivalent resistance and capacitance circuit, and more accurate judgment is achieved; misjudgment due to loose contact of the kettle body and the coupler is avoided, and requirements of a traditional water level detection technology on a water-conductivity resistor are met.

A coal reservoir fracture gas and water conductivity dynamic change simulation testing device comprises a coal reservoir gas and water supply system, a coal reservoir fracture simulation system, a water and gas separation measurement system and a data monitoring collection system. An outlet of the coal reservoir gas and water supply system is connected with an inlet of the coal reservoir fracture simulation system, and an outlet of the coal reservoir fracture simulation system is connected with the water and gas separation measurement system. The coal reservoir fracture gas and water conductivity dynamic change simulation testing device can simulate the stressed state of coal reservoirs, can accurately test changing of the coal reservoir fracture conductivity under different confining pressures, at different drainage stages, with different fracture lengths and different fracture widths and in fracture combinations, and provides theoretical basis for the coal-bed gas well drainage working system; and simulates the drainage process of coal-bed gas wells, can distinguish paths of water and gases in coal beds under conditions of different fracture combinations, different pressures and the like in the coal-bed gas well drainage process, and provides theoretical support for researching the coal-bed gas well aerogenesis mechanism.

The invention discloses a nuclear power EDI electrolytic desalting device. The device comprises a system water inlet valve (1), a prefilter (3) and a precision filter (6). The precision filter (6) is connected to a concentrated water manual regulation stop valve (10) and a fresh water side electric door (11), and both the concentrated water manual regulation stop valve (10) and the fresh water side electric door (11) are connected to an EDI electrolytic desalting module (15). The EDI electrolytic desalting module (15) is respectively connected to a water production side check valve (16) and a concentrated water side check valve (17). The nuclear power EDI electrolytic desalting device provided by the invention has the advantages of reasonable structure design, convenient operation, automatic operation, automatic switching, up-to-standard water quality, stable water production, high recovery rate and stable operation, and can ensure an effluent water conductivity of less than 0.1us/cm. The device has the characteristics of no leakage unless abnormal situation, small occupation area, system integration, easy installation and convenient maintenance.

The invention relates to a preparation method of spherical aluminum oxide. The preparation method comprises the following steps: evenly mixing a sodium metaaluminate solution and an alginate solution, dripping the mixed solution into an aluminum salt solution through a needle hole or spraying the mixed solution into the aluminum salt solution to form gel beads, and further aging until the gel beads are completely hardened; taking out the gel beads, fully washing the gel beads with deionized water until the washing water conductivity is less than 500mu s/cm, and then soaking the gel beads into 0.5-10wt% of a urea solution; finally, drying, and roasting to obtain the spherical aluminum oxide. According to the preparation method, a balling process is coupled with a preparation process of an aluminum oxide precursor, so that the preparing and drying processes of the aluminum oxide precursor (pseudo-boehmite) are omitted; the whole process is simple and controllable and low-cost, and industrial production is easy to realize.