59results about How to "Accurate moisture content" patented technology

The invention discloses a method and a device for determining the water content of a fresh concrete mixture based on dielectric constant. According to the method, a relative dielectric constant of concrete is tested based on the propagation rate attenuation of an electromagnetic wave in the fresh concrete mixture and the reflection principle of the electromagnetic wave on a metal plate of a testing device, and then, in accordance with the principle that the relative dielectric constant is relatively sensitive to water, the propagation velocity of the electromagnetic wave in the fresh concretemixture is enabled to vary so as to lead to the variation of the relative dielectric constant, thus the water content of the fresh concrete mixture can be measured. The method has the characteristicsof no contact between an electromagnetic transmitting and receiving device and a tested object, large testing area and wide water ratio testing range. The method can be used for overcoming the defectthat the traditional method is insufficient in concrete adaptability, largely impacted by environment, inaccurate and unreliable, has greatly increased precision and speed in testing the relative dielectric constant of concrete, and has the characteristics of great simplicity in manufacturing testing device, good simplicity and convenience, accurate test results and outstanding operation easiness.

The invention discloses a novel wood drying method. The wood drying method comprises the following steps in sequence: sawing wood to be dried into wood sections with required lengths and measuring the initial water content and the oven-dry density of the wood; stacking the wood in a drying room; measuring the temperature of a feeding end and a discharging end of a wood stack along the drying medium flowing direction; according to the relationship equation of the temperature of the wood stack, steam partial pressure in the drying medium and the water content of the wood, calculating the accurate water content of the wood; and drying the wood according to the water content of the wood and the common wood drying benchmark program so as to obtain the high-quality dry wood. According the method, the measured water content of the wood is accurate, and the defect of large error of the water content measured by an electrical measuring method in prior arts can be overcome. The method is suitable for drying wood with any water content, the factor to be controlled in the drying process is single, the system is stable, and the wood drying quality and the wood drying efficiency are improved.

The invention discloses a moisture content measuring method for a wood drying process and a wood drying method. The moisture content measuring method for the wood drying process and the wood drying method include: measuring an initial moisture content and initial weight of to-be-dried wood, and stacking the to-be-dried wood in a drying kiln; measuring temperature and wind speed of media flowing through two sides of the stacked to-be-dried wood, acquiring saturated vapor pressure of moist air according to dry-bulb temperature, acquiring relative humidity of the moist air according to temperatures of wet and dry bulbs, and finally acquiring density and moisture content of the moist air so as to obtain moisture contents of the to-be-dried wood at different times; according to the moisture contents of the to-be-dried wood, drying the to-be-dried word according to wood drying standards so as to obtain high-quality dry wood. The moisture content measuring method is precise, simple, low in input, applicable to any wood moisture content measurement, less in measuring parameters, simple in calculation, systematically stable, capable of overcoming the defects of large measuring error and narrow range of an electric measuring method and improving quality of solid wood plates, high in efficiency and low in cost.

The invention relates to a computer image processing technology and discloses a method for predicting the water content of tea on the basis of near-infrared hyperspectral textural feature modeling. The method comprises the steps of carrying out hyperspectral data acquisition on tea leaves, extracting textural features and spectral features of acquired data, and brightening a prediction model to finally obtain the predicted water content of the tea leaves. The method disclosed by the invention has the advantages that the computation is convenient and fast, the steps are simplified, and compared with the traditional determination method, the method has higher accuracy rate and determination speed and higher application value.

A near infrared (NIR) probe is disposed in a holder which is mounted within the wall of an enclosed process vessel. The probe reads and determines the moisture content of a product undergoing processing or drying from the enclosed vessel. The probe holder is formed with conduits, and a gas, such as air or nitrogen, is transmitted in periodic high pressure pulses through the holder conduits and transversely across the probe detecting end face to clear the probe end face of moisture and particulate contaminants to provide accurate real time moisture content determinations. The NIR probe and holder are disposed in a fluid tight construction.

The invention provides an unsaturated soil thermal physical parameter testing system. The unsaturated soil thermal physical parameter testing system is composed of a soil sample control system, a thermal physical parameter testing system and a data acquisition system, wherein the soil sample control system is composed of a pressure plate instrument unit, a pressure control unit and a water quality measurement unit; and the pressure plate instrument unit comprises a test part chamber, an annular cutter, a ceramic plate, a fixed bolt, a base and a water pipe. The pressure control unit is used for controlling air pressure in the test part chamber; the pressure control unit comprises a pressure gauge, an air compressor, an air valve, an air pipe and a sealing bolt; the water quality measurement unit comprises a water groove, a graded tube, a balance and a beaker; the thermal physical parameter testing system is composed of a moisture content tester and a thermal physical property tester; and the data acquisition system is composed of a data acquisition unit and a computer. With the adoption of the unsaturated soil thermal physical parameter testing system, the disadvantage in the prior art that thermal physical parameters of unsaturated soil cannot be accurately measured can be overcome, and the relation between the moisture content in a soil body and the thermal physical parameters can be researched.

The invention discloses a method and a device for realizing online measurement for a single-well water content of crude oil in an oil well by virtue of gas-liquid separation. The method comprises the following steps that: 1. a gas-liquid separation device internally provided with an inner tube and an outer tube is installed on a wellhead pipeline, the outer tube and the inner tube are communicated with a mixed liquid inlet and a mixed liquid outlet of the wellhead pipeline respectively, a radiofrequency water content analyser is installed outside the gas-liquid separation device, and a probe of the radiofrequency water content analyser is inserted in the inner tube and located on the lower part of the inner tube; 2. an oil-gas-water three-phase flow flowing in through the mixed liquid inlet flows in the outer tube, and a gas ascends and enters the inner tube from top to bottom, and then is discharged from the wellhead pipeline through the mixed liquid outlet; and 3. the liquid level of an oil-water mixed liquid entering the outer tube descends, the oil-water mixed liquid enters the inner tube and flows through the probe, and the probe is capable of obtaining an accurate instantaneous water content signal, thus eliminating the influence of the gas on measurement accuracy. The device has the beneficial effects of being simple in structure, good in gas-liquid separation effect, stable and reliable in running, accurate in measurement data, and capable of realizing accurate and real-time online measurement for the single-well water content and liquid production capacity.

The invention provides a concrete humidity control system and method. The device comprises an aggregate conveying unit, a powder conveying unit, a humidity detecting control unit and a stirring station, wherein the humidity detecting control unit comprises a data acquisition unit, a data processing unit and a control unit; the data acquisition unit, the data processing unit and the control unit communicate through an interface module; the data processing unit is used for performing digital processing on an analog signal acquired by the data acquisition unit; and a filter unit is used for performing low-pass filtering on a digital signal and is used for confirming moisture content of concrete in the stirring station in real time.

The invention discloses a method for measuring moisture content of a transformer insulation part. The method comprises the following steps: establishing a geometrical model of a transformer insulation system by utilizing insulation structure data of a transformer; testing to obtain a relation curve between the electrical resistivity of a sample of a to-be-measured transformer insulation material and time under multiple conditions of moisture content and temperature; inputting the relation curve into the geometrical model, and calculating to obtain a relation curve RC (t) between the transformer insulation resistance and the time under multiple corresponding conditions of moisture content and temperature by using a dynamic electric field finite element method; measuring to obtain a relation curve Rm (t) between the insulation resistance of a to-be-measured transformer and time by using a traditional insulation resistance meter; and comparing the relation curve RC (t) and the relation curve Rm (t), thereby obtaining a relation curve RC (t) with the highest contact ratio with the relation curve Rm (t), wherein the moisture content which corresponds to the relation curve RC (t) refers to the moisture content of the insulation part of the transformer. According to the invention, the moisture content of the transformer insulation system can be respectively and accurately measured.

The invention discloses direct type soil moisture content detection equipment. A filtering screen slides to a weighing platform for peeling; a to-be-detected sampled soil is placed on the filter screen and a value is recorded; and a driving motor is controlled to drive a conveying belt to drive the filter screen to ascend and a telescopic driver and a telescopic arm are controlled to enable the filter screen to vibrate up and down, so that impurities in the soil are separated from the soil. A micro cylinder drives a push plate arranged on the upper surface of the filter screen to horizontallyextend and retract, so that the soil on the filter screen is uniformly distributed. The conveyor belt drives the filter screen to upwards enter a dustproof cover; a blower is turned on to blow the soil on the filter screen and thus all residual soil is left on the weighing platform; baking is performed, weighing is carried out again, and then a value is recorded; and the impurities in the soil areremoved and then the moisture content in the soil is obtained accurately.

The invention relates to a method for operating a washing/drying device (1), in particular a washing/drying device (1) comprising a washing drum (2), a moisture determining device for determining the moisture content of process air (a) evacuated from the washing drum (2) and a cooling body (4) for cooling the process air (a). Said moisture determining device (9, 10 to 13) comprises at least one temperature sensor (10 to 13) and the at least one temperature sensor (11) is arranged behind an inlet of the cooling body (4) for a medium (a, c) flowing through the cooling body (4) or a medium (c) that is arranged in the cooling body (4).

The invention belongs to the field of agricultural remote sensing, and relates to a crop irrigation instruction method by means of assimilation of a dual polarimetric synthetic aperture radar and a crop model. The crop irrigation instruction method includes the steps: collecting satellite data of the dual polarimetric synthetic aperture radar and preprocessing the satellite data of the dual polarimetric synthetic aperture radar, and performing inversion on soil moisture SM by means of an AIEM and an MIMICS (Michigan Microwave Canopy Scattering Model); calibrating an SWAP model of crops of a research region; assimilating the obtained inversion SM and the obtained simulation SM of the SWAP model by means of a Kalman filtering algorithm, and optimizing the SWAP model; and performing the aboveoperations on crop grids one by one based on soil moisture percentage content output from the optimized SWAP model to obtain an irrigation demand, and obtaining a regional crop irrigation program drawing to instruct crop production. The crop irrigation instruction method by means of assimilation of a dual polarimetric synthetic aperture radar and a crop model integrates with the advantages of SARremote sensing data and the crop model, and uses the SAR remote sensing data to effectively overcome the problem that the satellite remote sensing data is missed in the cloudy and rainy conditions, thus greatly increasing the available data time resolution and effectively improving the regional crop soil moisture estimation precision.

The invention provides a device and a method for preparing remolded soil with specific water content. The invention is used for preparing the remolded soil with the specific water content in an indoor soil test. The device comprises a motor base, a charging basket and a water injector. The charging basket is arranged on the motor base, the bottom of the charging basket is provided with blades of a rotatable chassis for stirring the soil, the inner wall of the charging basket is provided with an upper humidity sensor, a middle humidity sensor and a lower humidity sensor which are connected with an outer wall humidity indicator, and a nozzle of the water injector is connected with a cover hole opening on the charging basket. Water in the water injector is pressured by a pressuring handle, so that the assembled charging basket is arranged on a rotation shaft of a motor of the motor base, and a power source is switched on, so that a soil sample is stirred. A speed adjusting disc for controlling rotation direction is arranged on the motor, so that the soil sample is stirred and the water injector is used for spraying water, and when the humidity sensors reach to a preset value, the stirring is stopped. The remolded soil with the specific water content is taken out for the indoor test. Compared with the existing method for preparing the remolded soil with the specific water content in the indoor test, the device and method disclosed by the invention are obvious in advantages, automatic to operate, and exact to prepare the water content.

Described is a method and system for a level measurement. An echo curve is analyzed, and both the level and the moisture content of the stored material is determined therefrom. The level measuring instrument works in such an energy-saving manner that it is sufficient to supply the instrument with power using a 4 . . . 20 mA two-wire conductor loop that is also used to transmit at least some of the measured values.

In a first aspect the present invention relates to a pellet mill (10) comprising a die (30) having a first surface (34) and a second surface (36), the die further comprising press holes (38) extending from the first surface to the second surface, at least one roller (50) configured to roll over the first surface for forcing a pelletizable material, forming a feed layer (2) on the first surface, through the press holes to the second surface, and a nozzle (82) configured to provide an additive fluid (4) directly into the nip (86) between the at least one roller and the first surface. In a second aspect the present invention relates to a method of producing pellets, and in a third aspect the present invention related to method of retrofitting a pellet mill.

A method for measuring water content of a mixture of oil and water includes a) generating a medium frequency signal (V_i); b) passing the medium frequency signal (V_i) through a frequency conversion circuit to produce a first measurement signal at a low frequency (V′_i); c) passing the medium frequency signal (V_i) through the mixture of oil and water to obtain an altered signal (V_o); d) passing the altered signal (V_o) to a frequency conversion circuit to produce an altered measurement signal at a low frequency (V′_o); and (e) determining water content of the oil and water mixture based upon amplitude and phase change of the altered measurement signal (V′_o) as compared to the first measurement signal (V′_i).

The invention is suitable for the technical field of data processing and provides an irrigation information determination method and device, and a terminal device. The method comprises steps that a current growth cycle and the current water content of a to-be-irrigated plant are obtained, and the current water content of the to-be-irrigated plant is obtained by analyzing the echo energy information returned by the to-be-irrigated plant; the standard water content of the to-be-irrigated plant in different growth cycles is obtained; the water content of the to-be-irrigated plant is determined according to the standard water content of the to-be-irrigated plant in different growth cycles, the current growth cycle of the to-be-irrigated plant and the current water content. The method is advantaged in that the current water content of the to-be-irrigated plant can be accurately obtained.

The invention discloses an automatic device for evenly wetting soil and a soil wetting method thereof. The automatic device comprises a horizontally-arranged bottom plate. A soil vibrating device and a soil wetting spraying device are arranged on the upper surface of the bottom plate. The soil vibrating device comprises a vibrator and a soil-sample containing device; the vibrator comprises a vibrator body and a vibrating platform located at the top of the vibrator body; the soil-sample containing device comprises boxes and box covers, wherein the boxes and the box covers are placed on the vibrating platform. The soil wetting spraying device comprises a water tank, a water pump and a spraying head, wherein the spraying head is fixedly connected to the box covers, the water inlet end of the water pump is communicated with the bottom of the water tank through a water inlet pipe, and the water outlet end of the water pump is connected with the spraying head through a water outlet hose. According to the automatic device, an automatic control device for wetting soil is set, the water consumption is automatically calculated according to the water content obtained before soil wetting and the water content obtained after soil wetting, and the automation degree of the configuration is increased; meanwhile, wetting is carried out in the mode that soil is vibrated while spraying, so that after arrangement is completed, the soil is more evenly wetted, and the water content is more accurate.

An image forming apparatus such as a copier and an air conditioner communicate with one another in a network. The air conditioner provides information regarding ambient temperature and/or humidity to the image forming apparatus. Based upon this information, the image forming apparatus selectively activates systems within the apparatus that regulate its internal temperature and humidity levels, to thereby achieve power savings. The image forming apparatus provides information regarding its operation state to the air conditioner. The air conditioner uses this information to adjust its heating or cooling operations to compensate for the heat generated by the image forming apparatus when it is operating.

A dental mixing palette for ceramic materials such as dental porcelain. The dental mixing palette has a base body, a bearing member mounted on the base body, a rotary platter mounted on the bearing member for undergoing rotational movement relative to the base body, a mixing part disposed on the rotary platter, and a cover configured to selectively, removably covering the mixing part.

The invention discloses a water supplementing method in a coating process of a paper coating machine. The water supplementing method comprises: carrying out first water supplementing by making paper adsorb liquid-state water before the paper reaches the coating head of a coating machine, and carrying out second water supplementing by making the paper adsorb water vapor after the paper reaches thecoating head of the coating machine. According to the water supplementing method, the paper can be precisely supplemented according to the actual requirements of the paper.

The invention belongs to the technical field of oil and gas exploitation, and particularly relates to a shaft flow monitoring system and a flow and water content interpretation method. According to the shaft flow monitoring system, distributed optical fiber temperature monitoring, distributed optical fiber sound wave monitoring and single-point thermal excitation functions are integrated, simultaneous monitoring of multiple parameters of underground temperature and sound waves is achieved, and the requirement for real-time monitoring of the underground fluid state in the high-temperature, high-pressure and corrosive environment is met. The invention further discloses a flow and water content interpretation method. Particularly for oil-water-gas three-phase fluid of an oil well, multi-parameter fusion interpretation is carried out on temperature information and sound wave information after fluid pulse heating, the flow and water content conditions are interpreted from multiple angles, the purposes of mutual verification and multiplicity reduction are achieved, the obtained fluid flow, the water content and the gas content are more accurate, more accurate data support is provided for actual production, the exploitation cost is saved, and the exploitation risk is reduced.

The invention discloses a water content detector which comprises a detector outer tube, a detector inner tube is arranged in the detector outer tube, and an electrode group which enables two ends to generate different electric capacities according to different dielectric constants of crude oil and water is arranged in the detector inner tube. A thermistor for detecting the temperature of the crude oil and a photoelectric sensor for detecting the reflectivity of the crude oil are also arranged in the detector inner tube; and an electronic data processor for performing data analysis on the capacitance value transmitted by the electrode group, the temperature of the crude oil detected by the thermistor and the reflectivity of the crude oil is arranged on the detector outer tube. According to the water content detector, the water content in the crude oil in the detector inner tube is detected in real time through the electrode group, data is transmitted into the electronic data processor, the temperature of the crude oil in the detector inner tube is detected in real time through the thermistor, and the temperature of water in the crude oil is compensated through the auxiliary heating layer after analysis of the electronic data processor; and the dielectric constant of water in the crude oil is prevented from being changed due to a temperature difference.