41 results about "Specific gravity" patented technology

The invention relates to the technical field of foundation treatment, in particular to a loess collapsible foundation treatment method based on porosity dynamic monitoring, which comprises the following steps: carrying out initial investigation on a loess collapsible foundation to obtain an initial investigation result, including the soil particle specific gravity, the moisture content, the density, the initial porosity and the collapsibility coefficient of foundation loess; according to the initial investigation result, a foundation treatment scheme is designed, and the scheme comprises determination of the treatment depth, the treatment range and a selected treatment method; foundation treatment is conducted according to the scheme, and in the foundation treatment process, the change of the loess porosity is monitored in real time through a porosity monitoring device; and according to the real-time monitoring data of the porosity, a foundation treatment scheme is adjusted or additional treatment measures are taken until the foundation porosity reaches a preset range and the foundation meets design requirements. The dynamic change of the loess porosity can be monitored in real time, foundation treatment measures can be adjusted in time according to the change of the porosity, and the loess collapsible foundation treatment effect and reliability can be improved.

A centrifuge for separating minerals by specific gravity is disclosed. The centrifuge rotates to circulate slurry across a collection region and to subject slurry in the collection region to centripetal forces that facilitate stratification within the collection region by the specific gravity of the constituent minerals of the slurry. Energy, such as acoustic energy, is coupled with the collection region and enhances the stratification by specific gravity within the collection region.

The invention relates to the technical field of temporary plugging material selection, in particular to a hot dry rock reservoir temporary plugging material selection method based on a high-temperature force chain strength index, which comprises the following steps of: obtaining relative contact force distribution and cumulative distribution among particles by utilizing a photoelastic image of a crack plugging layer in a pressure bearing process, determining relative contact force classification, and selecting a high-temperature force chain strength index; key parameters of the temporary plugging material are obtained through the strong chain proportion; grading according to the grain shape multi-dimensional index value; calculating entropy weights of the key performance parameters of the temporary plugging material; calculating relative weights of the key performance parameters of the temporary plugging material in different leakage environments; obtaining a weight calculation comprehensive weight by using an AHP and an entropy evaluation method; calculating composite weights of different leakage types according to the comprehensive weight; calculating the strength index of the strong chain according to the composite weight and the leakage type proportion, and selecting the temporary plugging material by using the strength index of the strong chain. The invention solves the problem of lack of temporary plugging material selection for well leakage control of fractured reservoirs in the prior art.

The invention relates to a pre-paving immersed tube tunnel foundation trench back-silting detection method and a sampler, and belongs to the technical field of immersed tube tunnel foundation trench back-silting detection.The detection method comprises the following steps that S1, when detection is needed, an RTK receiver is installed on a detection platform, and the detection platform is moved to a detection point through GPS positioning; s2, putting down the sampler for sampling, lifting up a sealing lifting lead of the sampler after sampling is completed, and pulling a sealing diaphragm to block an opening in the bottom of the sampler; s3, upwards extracting the sampler until the sampler leaves the water surface, keeping the sampler in an upright state, and measuring the thickness of each layer of back silt in the sampler; s4, extracting each layer of back-silting sample in the sampler, and carrying out a specific gravity test to obtain the density of a back-silting object; and S5, according to the thickness and density of the back silting object, whether desilting needs to be conducted or not is judged. According to the detection method, opening and closing of the sealing diaphragm are controlled through the sealing lifting lead, diving operation is not needed, and manpower and equipment cost is reduced; and the thickness and the density of the back-silting sample can be accurately obtained.

The invention relates to the field of powder mineral separation and powder and particle material separation and classification, in particular to a device and method for separating powder materials through kinetic energy. According to the first method, high-speed fluid is generated through high-pressure gas jet, and powder materials are sorted; and the second method is that shock waves generated by gas fuel explosion are utilized to form high-speed fluid, and powder materials are sorted. The various forms have the common characteristics that the separation effect is better, various principles can be fully utilized for separation, the method is suitable for separation of various different powder minerals and separation and grading of powder and particle materials, and the defects that an existing flotation method is high in separation cost, large in pollution and high in separation efficiency are overcome. The defects that a gravity separation method is low in separation efficiency and different materials with the specific gravity difference smaller than a critical point cannot be separated are overcome, and particularly the limitation that ultra-micro powder particles cannot be effectively separated and separated and particle size grading cannot be conducted on powder particle materials is overcome.

The invention provides an ash conveying pipeline high ash specific gravity working condition abnormal mode recognition and blockage prevention and control method, which comprises the following steps: acquiring ash flow speed and pressure distribution data in real time through a sensor array deployed at a key part of an ash conveying pipeline, and determining a material flow state in the pipeline; identifying a local pressure abnormal area according to the material flowing state; acquiring pipeline wall thickness monitoring data corresponding to the local pressure abnormal region, comparing the pipeline wall thickness monitoring data with a preset wear-resisting threshold value, and judging whether an auxiliary gas source injection mechanism is activated or not; the ash flow resistance increasing phenomenon is relieved by adjusting gas source injection parameters; predicting the position and severity of a potential blockage point, and determining a trigger condition of an instant dredging function; activating a local purging device through the triggering condition, obtaining fluidization effect feedback data after purging, and judging whether dredging is completed or not; and adjusting a pipeline material simulation model according to the fluidization effect feedback data, and generating an adjustment suggestion for enhancing wear resistance.

1. The name of this design product: Granular specific gravity sample extrusion die. 2. Purpose of this design product: to extrude plastic sample particles into sample strips for measuring specific gravity. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The present application relates to a kind of engineering filling sludge solidified particle settlement quantity prediction method.Engineering filling sludge solidified particle is used as filling material, lack standard settlement quantity prediction method.This method prepares two samples of solidified particle;Through first sample, the specific gravity of solidified particle is calculated;First sample is treated by immersion, and the volume proportion of good solidified particle and poor solidified particle is obtained;The compression modulus of good solidified particle and the compression modulus of poor solidified particle are determined;Through second sample, the maximum porosity and minimum porosity of solidified particle are determined;Combined with filling engineering design load and design thickness, total settlement is calculated.This method comprehensively considers upper load and solidified particle gravity when engineering filling sludge solidified particle settlement quantity is predicted, and the compression settlement of good solidification and poor solidification particles is also considered, in addition, the volume reduction caused by the internal reduction of particle porosity, internal compression is also used in prediction calculation, and more real and reliable total settlement prediction value is obtained.

The invention discloses an automatic preparation method of high-permeability stratum shield slurry based on a deep learning model, and belongs to the technical field of high-permeability stratum shield slurry, and the method comprises the following steps: S1, designing slurry parameters by adopting an orthogonal design method, and selecting three factors of effective particle size, specific gravity and viscosity of slurry for research; the effective particle size of the slurry is prepared from pure bentonite slurry with the swelling-water ratio of 1: 12 and particle materials with different particle sizes; s2, carrying out penetration test on the prepared slurry sample in stratums with different permeability coefficients, and recording the change condition of the water filtering amount along with time, the type of a formed mud film and the thickness of the mud film; by establishing the quantitative evaluation index based on the deep learning model, the mud film performance can be accurately and objectively evaluated, and a scientific basis is provided for mud preparation. And in combination with quantitative evaluation indexes and a deep learning model, automatic optimization of the slurry formula is realized, the slurry preparation efficiency is improved, and the labor cost is reduced.

The application provides a device for measuring the density of water film on the surface of soil particles and the specific gravity, which comprises a vacuum saturation cylinder with a sealing cover arranged at the upper end, an electronic balance arranged in the saturation cylinder, a magnetic stirrer and a temperature control box with an open top arranged above the electronic balance in sequence, a narrow-neck glass volumetric flask arranged in the temperature control box, a temperature controller and benzyl silicone oil, and a camera and a computer data acquisition system; the narrow-neck glass volumetric flask comprises an upper part with a narrow neck and a scale and a lower part communicated with a liquid supplementing pipe, the upper part and the lower part are separable and can be connected by a sealing washer, the narrow neck and the scale of the narrow-neck glass volumetric flask extend upwards beyond the top of the temperature control box and the vacuum saturation cylinder, the liquid level is photographed in real time by the camera and the data is transmitted to the computer data acquisition system for analysis and calculation. The application provides a new way for measuring the density of water film on the surface of soil particles and the specific gravity.

Processes, systems, and methods for determining water cut of a fluid sample in an oil and gas process facility including obtaining the fluid sample in a degassing vessel, measuring a pump suction pressure, a pump discharge pressure, a flow rate, and a temperature of the fluid sample, and obtaining a pump curve corresponding to the pump, the pump curve showing a relationship between the flow rate and a pump head. Processes, systems, and methods for determining water cut also include receiving the pump suction pressure, the pump discharge pressure, the flow rate, and the temperature, determining the pump head corresponding to the flow rate, determining a specific gravity of the fluid sample by Equation 1, and determining a water cut of the fluid sample by Equations 2 and 3, using a computer processing unit.

The present invention discloses a method for predicting the carbon-hydrogen ratio of oil products based on average boiling point and specific gravity. The method comprises the following steps: using a temperature parameter derived from the average boiling point and a density parameter derived from the specific gravity to regress and establish a formula for estimating the carbon-hydrogen ratio of a petroleum fraction; modifying the regression formula to obtain a carbon-hydrogen ratio model for the petroleum fraction; performing a goodness-of-fit test on the model; and establishing a method for estimating the carbon-hydrogen ratio of the petroleum fraction. The estimation method provided by the present invention establishes a carbon-hydrogen ratio estimation model for the petroleum fraction, predicts unknown carbon-hydrogen ratio properties of the petroleum fraction, and provides highly accurate estimation results. The method is applicable to fields such as oil product carbon-hydrogen ratio estimation, process simulation and optimization calculations, and device product quality inspection.

The utility model discloses a concrete sand quality detection device which is characterized in that overlarge sand is screened out through a sieve plate frame, water is fed into a water tank, a tray, a mounting block and a sieve drum are driven by a servo motor to do positive and negative rotation acceleration and deceleration motion to wash the sand, and a stirring plate can enable the water and the sand to be in full contact, so that the cleaning effect is improved. Sand smaller than screen holes of the screen drum is also screened out while cleaning wastewater is discharged, the influence of particle size difference and impurities on the void ratio detection result can be eliminated, the sand is dried through the heating plate, the screen drum continues to rotate, the drying efficiency is improved, a standard sample with the stable moisture content is obtained, the screen drum is put into a measuring vessel on the weighing assembly, and the weight of the sample is weighed. Water with the specified height is injected into the measuring vessel, the weight of the sample in the water is weighed, the void ratio is calculated according to the specific gravity principle, personal errors can be avoided through the detection device, the detection efficiency can be improved, the clean sample prepared through the device is uniform in particle size and stable in moisture content, and the accuracy of the detection result can be improved.

The invention discloses an emergency temporary drainage sedimentation method for preventing and treating water-bursting mud-sand-bursting water disasters, which comprises the following steps: (1) taking a raw water sample of mud-sand-containing water when a working surface in a coal mine bursts water and mud sand, analyzing to obtain mud-sand content and response specific gravity, and preparing mud-sand water by using similar materials; (3) selecting control parameters to analyze the silt water under preset turbidity to obtain a mapping relation between the control parameters and the silt water; (4) carrying out classification and statistics on the influence of different physical materials on the mud-sand water to obtain a mapping relation between the physical materials and the mud-sand water; (5) carrying out classification and statistics on the influence of the materials with different concentrations on the mud-sand water to obtain a mapping relation between the materials with different concentrations and the mud-sand water; and (6) selecting the materials according to the mapping relation between the control parameters and the mud-sand water, the mapping relation between the physical materials and the mud-sand water and the mapping relation between the materials with different concentrations and the mud-sand water to obtain the compound flocculant of the polyaluminum chloride and the polyacrylamide.

The prior art still depends on special properties such as electrical resistivity or Blaine specific surface area, and special equipment such as a constant-temperature water bath, a temperature sensor and a data recorder is needed. In addition, a small enterprise is difficult to obtain a dust-free laboratory space and is difficult to bear the cost of professional experiment technicians. Besides, the test method consumes long time (1-91 days), and the long test period can generate adverse effects on the production process, which may cause production bottleneck, inventory cost increase and potential quality problems. Another problem is that the existing method only evaluates a very small amount of cementing materials and is difficult to reflect the real characteristics of a large batch of materials which are actually used in the industry. The invention provides a quality evaluation method, which can simply, quickly and accurately judge the similarity between different cementing materials. The method is based on the construction of a calibration curve which is used for representing the relationship between the particle density index (DPI) and the relative specific gravity of a series of given cementing materials.

Separating target particles from discard particles in an aggregate using tailored frequencies in a mineral separation table is described. The separation table comprises a planar surface angled in a −z direction along the +x axis at an angle α and in the −z direction along the +y axis at an angle β. A motor is responsive to a first or second vibration wave train received by a controller. The motor vibrates the table with the vibration wave train thereby separating target from discard particles by differences in specific gravity. The first vibration wave train is a plurality of primary half sine waves each followed by a pause. The second vibration wave train is the plurality of the primary half sine waves and a plurality of high frequency sine waves having a frequency that is higher than the primary half sine wave.

This application discloses a method for extracting the residual density field of the Earth's crust based on the separation of magnetic mineral density effects, relating to the field of geophysics. The method includes: obtaining the three-dimensional density and magnetization structure of a target region; obtaining the three-dimensional temperature structure of the target region; converting magnetization into magnetite content; and stripping away the density effect of magnetite to obtain the residual density of the Earth's crust. This invention, through quantitative estimation and separation of the magnetic mineral density effect, explicitly removes the contribution of magnetic minerals to the density field from the total density structure, avoiding interference from magnetic mineral enrichment in the interpretation of crustal density anomalies. It estimates the volume fraction of magnetite using magnetic information and combines it with the temperature-corrected density structure to establish a crustal density component decomposition method based on a volume fraction mixing model, achieving physical differentiation between magnetic and non-magnetic components in the density field. It does not rely on specific gravity or magnetic inversion algorithms and has good versatility and scalability.

To evaluate a dissolution loss speed of a refractory in a relatively simple method.SOLUTION: This invention relates to an estimation method for estimating a ratio of dissolution loss speeds at a slag line of two immersion nozzle refractories, wherein: the two immersion nozzle refractories each contain 80 mass% or more and 97 mass% or less of zirconium dioxide, 3 mass% or more and 20 mass% or less of carbon, and 6 mass% or less of other components. The estimation method includes the steps of: identifying an apparent porosity PA of a first immersion nozzle refractory and an apparent porosity PB of a second immersion nozzle refractory; identifying an apparent specific gravity GA of the first immersion nozzle refractory and an apparent specific gravity GB of the second immersion nozzle refractory; and calculating, based on the following formulae (1), (2), and (3), a ratio γ of a dissolution loss speed VB of the second immersion nozzle refractory to a dissolution loss speed VA of the first immersion nozzle refractory.SELECTED DRAWING: None

The invention is applicable to the technical field of underground engineering construction, and provides a micro-settlement control construction method for a shield tunneling machine to pass through an extremely soft soil stratum of a river in a close range, which comprises the following steps: S1, preparation before construction: S1-1, geological exploration: adopting various exploration means such as drilling, static sounding and vane shear test, and obtaining a micro-settlement control result; the method comprises the following steps: comprehensively surveying river bottom mud of a crossing section and a lower extremely-soft soil stratum to obtain physical and mechanical parameters of natural water content omega, natural weight gamma, void ratio e, compression modulus Es, cohesive force c and internal friction angle phi of the stratum, and meanwhile, ascertaining hydrogeological conditions of river water level, flow velocity, riverbed deposition thickness and stratum permeability coefficient k. According to the method, the quantitative relation among the tunneling parameters, the grouting parameters and the settlement amount is established, closed-loop control of the construction process can be achieved, the settlement amount can be effectively controlled within a micro-amplitude range, and the safety of a project and the surrounding environment is guaranteed.

Provided is a glass containing a crystalline phase, the glass including at least one crystalline phase selected from the group consisting of cristobalite, lithium disilicate, and petalite, in which a value of E / ρ, which is a ratio of Young's modulus E to specific gravity ρ, is 35 or more, and a glass transition point is 680° C. or higher.

To provide a device that allows long-term continuous operation of polluted water of a sedimentation basin or the like.SOLUTION: A water suspended matter adhesion material includes a loop-shaped string body having specific gravity of 1 or less and provided in a horizontal direction in at least one direction from a core body.SELECTED DRAWING: Figure 1

This invention belongs to the field of paleogeographic restoration technology in geological exploration, and discloses a method and system for river paleoslope restoration based on the combined use of well and seismic data. The method determines the underwater specific gravity based on sediment mineral composition; determines the ratio of surface friction shear velocity to particle settling velocity based on median grain size; calculates dimensionless grain size, settling velocity, and particle Reynolds number based on grain density, fluid density, grain diameter, and kinematic viscosity; obtains the point dam thickness from well logging curves, and obtains the initial full-bank depth after decompaction correction; obtains the paleochannel width from seismic data, corrects the initial full-bank depth, and obtains the full-bank depth of the river channel; and calculates the river paleoslope based on underwater specific gravity, median grain size, full-bank depth of the river channel, the aforementioned ratio, and dimensionless parameters. This invention achieves quantitative calculation of deep-time river paleoslope, significantly improving the accuracy and reliability of the assessment, and solving the problems of traditional methods relying on qualitative reconstruction, difficulty in data acquisition, and high computational costs.

A centrifuge for separating minerals by specific gravity is disclosed. The centrifuge rotates to circulate a slurry through a collection region and subject the slurry in the collection region to centripetal forces that facilitate stratification within the collection region by the specific gravity of the constituent minerals of the slurry. Energy, such as acoustic energy, is coupled with the collection region and enhances the specific gravity stratification within the collection region.

A method includes conveying a wellbore fluid into a container of a wellsite system, the container having a float angle hydrometer housed therein and the float angle hydrometer including a buoyant structure, and a measuring component housed within or attached to the buoyant structure. The method further includes determining one or more fluid properties of the wellbore fluid with the float angle hydrometer based on an inclination of the buoyant structure within the wellbore fluid, the one or more fluid properties including at least one of density, specific gravity, or fluid level.

The objective of this invention is to reduce the burden of sieving light-density materials discharged from a density-differential sorting machine. [Solution] The sieving and recovery set according to the present invention comprises a sieving member 100 and a recovery member 200. The sieving member is attached to the discharge port EX of the low specific gravity material in the specific gravity difference sorting machine SGD. The recovery member is positioned below the sieving member to receive the low specific gravity material discharged from the discharge port. The sieving member has a perforated plate 120 and a mounting portion 110. The perforated plate is inclined downward as it approaches the recovery member. The mounting portion attaches the perforated plate to the aforementioned discharge port. The recovery member has a first recovery container CNu, a second recovery container CNl, and a non-perforated plate 220. The first recovery container is positioned below the lower end of the perforated plate. The second recovery container is positioned below the first recovery container. The non-perforated plate is inclined downward from a position below the upper end of the perforated plate towards the second recovery container and extends to the second recovery container.

The invention provides a material flow stability control system and method for a continuous ship unloader, and the method comprises the following steps: S1, recognizing the contour of a material in each chain bucket which is continuously lifted, and obtaining material morphology point cloud data; s2, de-noising the material morphology point cloud data by adopting a statistical filtering method; s3, performing plane fitting on the de-noised material morphology point cloud data by adopting a least square method to obtain a plane equation of the material surface; s4, performing curved surface integral on the plane equation of the material surface and a pre-obtained chain bucket bottom surface equation to obtain a material volume; s5, obtaining the material load in the chain bucket according to the material volume and the specific gravity, and calculating the instantaneous material flow value of the system according to the parameters such as the current chain bucket lifting rate; and S6, comparing the instantaneous material flow with a preset material flow, and timely adjusting a material taking process strategy. According to the method, the material taking strategy is dynamically adjusted, and it is ensured that the ship unloader efficiently carries out ship unloading operation under stable material flow.

The application belongs to the technical field of mineral separation device, and is especially a suspension type shaking table mineral separation device, which comprises a base I-shaped steel, a connecting frame is installed on the base I-shaped steel, an upper layer suspension I-shaped steel is installed on the connecting frame, a transmission device is installed on the upper layer suspension I-shaped steel, a drip zone is installed on the transmission device, and a three-phase asynchronous reciprocating motor is installed on the upper layer suspension I-shaped steel. Compared with a traditional fixed bed surface, the belt bed surface has a lower friction coefficient and better self-cleaning performance, and the resistance of mineral particles moving on the bed surface is smaller, which is beneficial to the rapid layering and transverse movement of different specific gravity minerals. The drip zone is obliquely arranged towards the outside, so that the water obtains an outward directional flow rate when flowing out of the water outlet, which is cooperated with the reciprocating direction of the belt bed surface, and the separation effect of light minerals and heavy minerals is strengthened.

The invention provides an abrasion and blockage optimization method for coal ash conveying of an ash conveying pipeline, and the method comprises the steps: collecting the specific gravity data and airflow velocity data of coal ash in the ash conveying pipeline in real time through a sensor, and processing the data through a particle swarm optimization algorithm to simulate the stress distribution of the inner wall of the pipeline, thereby obtaining a quantitative evaluation value of the wear aggravation degree of the pipeline; according to the optimized sequence version, processing a historical coal ash conveying difficulty data set, classifying the validity of the sequence version by adopting a support vector machine model, and if a classification result shows that the validity is higher than a preset threshold value, integrating the sequence version into a control system, and determining a final wear resistance optimization strategy; and acquiring strategy parameters from the final wear resistance optimization strategy, inputting the strategy parameters into a field equipment interface to execute pressure precise cooperative adjustment, and judging whether the strategy parameters reduce the surge increase of the blockage frequency or not by continuously monitoring the adjusted airflow distribution data to obtain an updated version of the overall response mechanism of the system.

To provide a specific gravity separator which can efficiently separate and collect high-specific gravity material from a separation object, and can collect at a high collection rate by suppressing an amount of low-specific gravity material mixed in the collected high-specific gravity material.SOLUTION: A specific gravity separator discharges low-specific gravity material from an upper end of a conical drum and collects high-specific gravity material from a discharge pipe by performing specific gravity separation with the conical drum in which a separation object is input from an upper end side and a separation acting water supplied from the discharge pipe connected to a lower end side. The specific gravity separator includes a fluid jetting mechanism which jets a fluid toward a small-diameter opening or a periphery of the small-diameter opening from an inner side of the conical drum.SELECTED DRAWING: Figure 8