33results about "Material analysis by measuring buoyant forces" patented technology

The invention discloses a preparation method of a silicon oxide density standard floater, which comprises the following steps: preparation of silicon dioxide slurry: dissolving silicon dioxide powder in photosensitive resin for preliminary mixing to form a mixture, and grinding the mixture to obtain the silicon dioxide slurry; 3D printing is conducted, specifically, the silicon dioxide slurry is put into photocuring 3D printing equipment to be subjected to 3D printing, and coarse silicon dioxide pellets are obtained; and cleaning and curing: cleaning and secondarily curing the silicon dioxide pellets. According to the photocuring ceramic additive manufacturing technology, through digital design-high-precision forming-gradient material integration, the problems of efficiency, precision and structure bottlenecks in traditional glass floater preparation are thoroughly solved, a hollow thin-wall and porous gradient complex structure can be formed, the structural design limitation is broken through, the forming precision is 25 microns, and the manufacturing cost is low. The machining size precision is greatly improved, the internal stress can be eliminated through an integrated degreasing and sintering mode in the preparation process, and the mechanical stability of the standard floater is improved.

The application discloses a kind of aeolian sand layered density measurement methods, steps are as follows: a top open water tank is arranged in advance, connect multiple connecting pipes at the bottom of water tank, each connecting pipe is vertically provided with pressure measuring tube, water tank has floating plate floating on water surface, and floating plate is fixed with sand container; after floating plate and sand container float up and stabilize, the initial height of water column in pressure measuring tube is recorded; aeolian sand layer with thickness d is added in sand container in batches, the change value of water column height Δh in pressure measuring tube is recorded, and the mass, volume and density of the layer aeolian sand under Δh height change are calculated;Repeat the above steps, assume that aeolian sand is n layers, when the total thickness of aeolian sand layer reaches D, the final mass m of sand layer of total thickness D of aeolian sand layer is calculated total , total density ρ total ; finally, the layered density of each aeolian sand is obtained by recursive calculation.The application aims to provide a kind of layered density measurement method capable of measuring the layered density of each layer of aeolian sand.

The utility model belongs to the technical field of gas density measurement, and particularly relates to a remote transmission type gas density meter. Comprising a shell, a bourdon tube, a movement, a pointer and a bimetal compensating plate, the angle sensor sleeves the rotating shaft end of the pointer and is used for detecting the deflection angle of the pointer; the remote transmission circuit board is arranged in a remote transmission signal box, and the remote transmission signal box is arranged outside the shell; wherein a signal amplification and filter circuit, a signal acquisition circuit, a main control chip circuit and a wireless communication module are integrated on the remote transmission circuit board; and the input end of the signal amplifying and filtering circuit is connected with the signal output end of the angle sensor. According to the utility model, the deflection angle of the pointer is obtained by designing the angle sensor, and angle data is converted into a density numerical value through the main control chip, and then the density numerical value is remotely transmitted to a remote terminal background, so that the functions of remotely monitoring and reading the density numerical value are realized.

The invention discloses an absolute measurement method and device for the density of molten salt and solution, and belongs to the field of molten salt physical property tests.The measurement method comprises the steps that 1, a cone and cylinder composite heavy hammer is adopted to measure the density of the molten salt or solution; 2) arranging two measuring positions on the cylinder section of the heavy punch, taking the section between the two measuring positions as a middle measuring section, the length of the middle measuring section is equal to the distance between the two measuring positions, the diameter of the middle measuring section is equal to the diameter of the cylinder of the heavy punch, and measuring at the two positions in sequence; (3) the density of the fused salt or the solution is determined by the volume of the middle measuring section of the heavy hammer and the buoyancy borne by the middle measuring section, so that the density of the fused salt and the solution is deduced; according to the method, a long-distance microscope system is adopted to directly measure the thermal expansion of the heavy hammer at high temperature, calibration by a standard substance is not needed any more, when the method is adopted to measure the density of the fused salt and the solution, the volume of the heavy hammer does not need to be calibrated, additional force caused by surface tension is completely removed, the measurement process is greatly simplified, and the measurement precision is improved.

The measuring sphere is suspended from a lightweight and precisely adjustable device, which can be lowered to the millimeter by means of a gear mechanism.

The present technology relates to a battery cell jig including a spacer laminate, a battery cell volume measuring apparatus including the battery cell jig, and a battery cell volume measuring method performed by using the apparatus. It is possible to easily adjust a space between first and second plates where a battery cell has been interposed therebetween by including a spacer which can be assembled in the spacer laminate. Further, it is possible to preventing stagnation of water at a space between the battery cell jig and the spacer when measuring the volume change of the battery cell by including a slit unit opened along a longitudinal direction in the spacer.

The utility model discloses a solid and liquid density detector, which belongs to the technical field of density detectors and comprises a control display host, a weighing component A and a weighing component B. The weighing component A and the weighing component B are mounted in an outer shell, the weighing component A is mounted on the inner bottom surface of the outer shell, and a support is mounted on the weighing component A and extends out of an equipment opening formed in the upper end surface of the outer shell; a glass container is installed on the weighing assembly B. The weighing assembly B is installed on the weighing assembly A and located in the support. According to the utility model, a glass container is installed on a weighing assembly B, a support is installed on a weighing assembly A, and the weighing assembly B is installed on the weighing assembly A; by means of the auxiliary hanging basket and water, the density of solids in any shape can be conveniently measured; by means of the auxiliary square block, liquid density measurement is conveniently achieved, and convenience, high efficiency and accuracy are achieved.

According to the portable rock core data comprehensive test box provided by the invention, the rock core manufacturing module, the test sensor assembly and the electrical processing unit can be integrated into one box body through integrated arrangement, and full-automatic test and storage of data are realized. The portable rock core data comprehensive test box comprises a box body, and a rock core manufacturing module, a test sensor assembly and an electrical processing unit which are arranged in the box body, the interior of the box body is partitioned and is provided with a rock core manufacturing module, a test sensor assembly and an electrical processing unit in multiple layers; the rock core manufacturing module is used for manufacturing a rock core sample with the section flatness meeting the set requirement in a grinding mode. The test sensor assembly comprises a rock core fixing support and a plurality of test sensors for testing different properties of a rock core sample; the rock core fixing support is used for fixing a rock core sample during testing; the plurality of test sensors are respectively connected with the electrical processing unit, and the electrical processing unit is used for receiving test data of the test sensors.

This invention discloses a method for testing the density of corrugated pipes, with the following specific steps: First, cut the corrugated pipe specimen; second, select a density testing instrument for testing; third, weigh the corrugated pipe specimen in air; fourth, remove air bubbles from the corrugated pipe specimen and immerse it in water; fifth, automatically determine the weight increase; sixth, calculate the weight of the corrugated pipe specimen in its submerged state. The lifting and lowering mechanism of this invention can lower the corrugated pipe specimen, after it has been weighed in air, into distilled water. During the immersion process, the first and second elastic cleaning wires can handle the air bubbles in the grooves of the corrugated pipe specimen, eliminating the need for manual handling. Furthermore, because the lifting and lowering mechanism lowers the corrugated pipe specimen, it ensures that the specimen effectively sinks to the positions of the first and second elastic cleaning wires for treatment.

The invention relates to the technical field of samplers, and provides a sampler with a density sensor, the sampler comprises a mounting groove frame, a bucket-shaped sampling barrel and the density sensor, the density sensor is longitudinally and slidably arranged in the bucket-shaped sampling barrel, the sampler also comprises a hoisting mechanism, the hoisting mechanism is arranged between the mounting groove frame and the bucket-shaped sampling barrel, and the density sensor is arranged in the mounting groove frame. The hoisting mechanism is used for driving the bucket-shaped sampling barrel to ascend and descend, the hoisting mechanism comprises a middle hoisting assembly and two side hoisting assemblies, the middle hoisting assembly can further drive the density sensor to longitudinally move in the bucket-shaped sampling barrel, the two side hoisting assemblies can drive the bucket-shaped sampling barrel to incline, and an entering and discharging mechanism is arranged in the bucket-shaped sampling barrel. By means of the technical scheme, the problem that in the petroleum density detection process in the prior art, density detection cannot be conveniently conducted in a sampler through a density sensor is solved.

The invention relates to an automatic measuring machine (10) for automatically determining a respective density of a plurality of solid test pieces (1), comprising a measuring device (2) with a dry weighing device (3) and a wet weighing device (4), a test piece magazine (5) for accommodating a plurality of solid test pieces (1), and a conveying unit (6) for conveying the solid test pieces (1) from the test piece magazine (5) to the measuring device (2), wherein the automatic measuring machine (10) is designed to sequentially convey the solid test pieces (1) to the measuring device (2) using the conveying unit (6), to weigh the solid test pieces (1) using the dry weighing device (3) and the wet weighing device (4) in order to obtain a respective weighing measurement for each solid test piece (1) and to determine a respective density value for each solid test piece (1) on the basis of the respective weighing measurement.

This invention discloses a method for simultaneously measuring multiple thermophysical properties of a refrigerant / lubricating oil mixture. The method involves evacuating a vibrating string device, controlling the pressure and temperature to a set value to achieve a constant temperature and pressure state; calibrating the volume of the cavity and pipelines of the vibrating string device; filling the vibrating string device with lubricating oil and refrigerant; measuring the density and viscosity of the mixture at the test temperature and pressure using the vibrating string method; measuring the pressure under the current state, which is the saturated vapor pressure of the refrigerant and lubricating oil mixture; and calculating the solubility of the refrigerant in the lubricating oil at the test temperature and pressure based on the obtained data. This invention provides a simple method for simultaneously measuring multiple physical properties such as density, viscosity, saturated vapor pressure, and solubility without repeated sample filling, simplifying past measurement steps, saving sample usage, facilitating rapid acquisition of experimental data for desired physical properties, and improving measurement efficiency.

The invention belongs to the technical field of density screening, and discloses solid sample density screening equipment, which comprises a test liquid and a container for accommodating the test liquid, and the density of the test liquid determines the floating and sinking states of a solid sample in the test liquid; the wall of the container is provided with a temperature sensor and a sensor used for measuring the liquid level of the container in the depth direction, and the temperature sensor is used for measuring the temperature of the test liquid. According to the method, density screening can be rapidly carried out on the solid samples, the detection efficiency is greatly improved, the requirement for real-time rapid detection on a large-scale production line can be met, compared with a traditional detection method, the detection time can be shortened by several times or even dozens of times, specifically, the solid samples are rapidly and accurately screened through the buoyancy law, and the detection efficiency is greatly improved. The solid sample with the density smaller than that of the testing liquid floats upwards, and the solid sample with the density larger than that of the testing liquid sinks.

An apparatus for testing a mechanical property of a buoyancy material in an abyssal environment and a test method are provided. The apparatus includes a split-type high-pressure tank. An independent tester is fixedly mounted inside the high-pressure tank. The tester includes a rack fixed inside the high-pressure tank by using mounting screws. A base is disposed on an upper surface of the rack. A column is vertically mounted to the base. A guide key is mounted to the column. A spherical-cage apparatus is mounted at a top of the column by using a ball holder. A spherical test piece is disposed inside the spherical-cage apparatus. A bottom of the spherical-cage apparatus is connected to a grating assembly by using a hook. A guide mechanism and a support are respectively mounted at a middle part and a lower part of the column. A light sensor and a light source are respectively disposed on two sides of the grating assembly. A bottom of the grating assembly is connected to the base by using a metering tension spring. Therefore, the mechanical property of the buoyancy material can be conveniently tested, to provide a new and effective method for performing technical judgment on the buoyancy material used in the abyssal environment, determining an effect generated in research of the buoyancy material, satisfying a balanced design requirement of a submersible, and the like.

The invention discloses a method for efficiently detecting the sugar content of sugarcane juice in batches, which comprises the following steps: step 1, data acquisition: acquiring the observed light conversion degree, the observed temperature and the observed brix value of the to-be-detected sugarcane juice; step 2, sugar calculation: substituting the data in the step 1 into a sugar calculation formula to obtain the sugar of the cane juice; step 3, analyzing and screening results, arranging the sugar values of the cane juice obtained in the step 2 according to a descending order to screen high-sugar strains, marking and re-detecting abnormal samples, and recording detection time, environment and operator information; step 4, data management: synchronizing detection data to a cloud database through an Internet of Things terminal, and generating a field sugar distribution thermodynamic diagram by associating GPS positioning; by integrating a multi-parameter optical detection technology, a dynamic mathematical model and Internet of Things data management, efficient and accurate screening of batch samples is realized, and temperature compensation and three-time brix mean value calibration are combined by adopting joint detection of an Abbe refractometer and a polarimeter.

The utility model belongs to the technical field of gas density measurement, and particularly relates to a reference type mechanical gas density meter. Comprising a shell, a bourdon tube, a movement and a bimetal compensating plate, the air bag chamber is communicated with the inner cavity of the shell, a reference air bag is suspended in the air bag chamber, and reference gas is filled in the reference air bag and is used as a density reference substance; the reference air bag is in transmission connection with the spring tube through the elastic element. According to the reference type mechanical gas density meter, temperature compensation is carried out by utilizing the air pressure and temperature change of the reference air bag on the basis of double-metal-sheet compensation. Compared with a single bimetallic strip, the characteristic is more stable, and the measurement precision and sensitivity are higher.

This invention discloses a method for determining the quality of a steel product coating, specifically: the mass of the coating in water is determined using a hydrostatic balance, and then the coating mass is calculated as: Coating mass = Mass of coating in water ÷ (1 - ρ) 水 / ρ 镀层 ) is calculated to obtain; where ρ 水 and ρ 镀层 The densities of water and the coating solution are given in g / cm³, respectively. This invention eliminates the need for sample drying before and after weighing, reducing operational steps and improving experimental efficiency. Furthermore, it minimizes sample contact with air, preventing data accuracy issues caused by product oxidation.

The utility model relates to the technical field of liquid density detection, and provides a submerged liquid density detection device, which is used for being arranged in liquid for detection and comprises a main body with a detection area, a communication port is arranged on the main body, and a pressure sensor and a buoy body are both arranged in the detection area and connected with each other. And the cross sectional area of the buoy body is gradually increased from top to bottom. By means of the technical scheme, the problem that in the prior art, suspended particles in ore pulp cannot be prevented from falling on a buoy, the detected buoyancy value can be affected, and the obtained ore pulp density is not accurate enough is solved.

The utility model belongs to gas density measurement technical field, especially relates to a kind of anti-explosion gas density gauge. Including: pressure sensing chamber, it is laid in the outside of the shell, and with the inner chamber of the shell is communicated;Pressure sensing diaphragm, its edge end is fixedly sealed with the inner wall of the pressure sensing chamber, axial end bottom is equipped with mandrel, the mandrel is slidably inserted in shaft hole and extends to the lead-through chamber of outside, wherein the shaft hole is opened in the bottom of the pressure sensing chamber, the lead-through chamber is laid in the bottom of the pressure sensing chamber;Spring, it is sleeved on the mandrel, and the upper end of the spring is connected with the pressure sensing chamber, lower end is connected with lead-through plate, the lead-through plate is connected with the lower end of the mandrel, the inner chamber bottom of the lead-through chamber still includes the touch switch of setting. The utility model is pushed by pressure sensing diaphragm and makes lead-through plate and touch switch touch, so that its pressure relief valve opens to carry out timely pressure relief, reach the function of self pressure relief explosion-proof.

The application discloses a kind of slurry stability detection methods, comprising the following steps: providing the slurry to be measured in container and setting at least one monitoring point in the slurry in container;At multiple different time points, the buoyancy generated by the slurry at the same monitoring point in container is measured, and / or at the same time point, the buoyancy generated by the slurry to be measured at multiple different monitoring points distributed along the vertical direction in the slurry to be measured in container is measured;According to the measured buoyancy data, the density set corresponding to the monitoring point and time point is calculated respectively, according to the corresponding relationship between the preset slurry density and slurry solid content, the corresponding slurry solid content set is calculated from the slurry density set;According to slurry solid content set, the stability of the slurry to be measured is determined.The method of the application is less disturbed by other factors, ensures the reliability of slurry density, combined with subsequent density and solid content conversion, can accurately capture the early stage of sedimentation or slight stratification phenomenon, which is beneficial to early warning.

A density meter for automatic testing of asphalt mixtures and its method of use. The density meter includes: a testing component, a replenishment component, and a lifting and wiping component; a weighing device is provided on the upper surface of its discharge platform, and the weighing device measures the mass m of the specimen outside the water storage tank. a The system selects between the first and second working modes; the working modes are suitable for asphalt mixtures with a water absorption rate of no more than 0.5% and no more than 2%; the weighing device measures the mass m of the specimen in the water tank. w The relative density γ was calculated. a Apparent density ρ a and water absorption rate S a relative density of hair volume γ f ρ of bulk density f The method of use is for using the density meter described above. This solution effectively solves the problems of high labor costs and errors that easily occur during repeated and multiple measurements in the existing testing process.

A testing device for mechanical properties of a buoyancy material in a deep-sea environment, and a testing method. The testing device comprises a separation-type high-pressure cylinder, in which an independent tester is fixedly mounted. The tester comprises a foundation fixed inside the high-pressure cylinder by means of mounting screws, wherein a base is provided on the upper surface of the foundation, an upright is vertically mounted on the base, a guidance key is mounted on the upright, a sphere cage device is mounted at the top of the upright by means of a sphere holder, a spherical specimen is placed in the sphere cage device, the bottom of the sphere cage device is connected to a grating assembly by means of a hook, a guiding mechanism and a support are respectively mounted on the middle and lower part of the upright, a photoreceptor and a light source are respectively provided on two sides of the grating assembly, and the bottom of the grating assembly is connected to the base by means of a metering tension spring. The work of mechanical-property testing on a buoyancy material can be conveniently completed, thereby providing a new effective method for carrying out technical evaluations on buoyancy materials used in a deep-sea environment, confirming the effects of buoyancy-material research, meeting balanced design requirements of submersibles, etc.

The application belongs to the technical field of density sensors, and relates to a fiber grating float type density sensing device based on laser sweeping technology. A pi-phase shift fiber grator is used as a sensitive element to improve sensitivity based on the advantage of narrow linewidth. A laser sweeping technology is used to establish a modulation-demodulation system to improve resolution and response time and realize real-time measurement and high-speed measurement. A gas molecule absorption cell is used as a standard wavelength reference to improve measurement accuracy based on the fact that a gas molecule absorption line is not affected by changes in external temperature and other factors. A cross-correlation algorithm is used to calculate the shift of the center wavelength of the pi-phase shift fiber grator relative to the absorption peak of the gas molecule absorption cell to improve measurement accuracy. When the density of the liquid to be measured changes, the buoyancy of the microcrystalline glass float changes, the pi-phase shift fiber grator senses the buoyancy, generates strain, and the center wavelength shifts. The time interval between the center wavelength and the absorption peak of the gas molecule absorption cell is calculated to demodulate the density of the liquid to be measured.

The invention belongs to the technical field of agilawood detection, and discloses an inspection device used in an agilawood purification process, the inspection device comprises a glass tube and a counter weight, the counter weight is arranged in the glass tube and is used for increasing the overall weight of the glass tube; the measuring assembly comprises a chassis, a limiting cylinder, a scale ring, a lifting structure and a fixing structure. The base plate is connected to the glass tube, the limiting cylinder is connected to the base plate, the limiting cylinder is sleeved with the scale ring, and the lifting structure is connected to the scale ring and the limiting cylinder. The problems that manual adjustment is complex and the measurement reliability is reduced in the measurement process in the prior art are solved, the accuracy of measurement data is effectively improved, and it is ensured that the concentration detection result is accurate and reliable in the agilawood purification process.

The hardness and density tester comprises a machine table, and a rotating disc is arranged on one side of the machine table; a hardness test module is arranged on the side of the turntable, a transfer mechanism is arranged outside the turntable, a density measurement module is arranged on the side of the transfer mechanism, and a waste discharge mechanism is arranged on the other side, away from the transfer mechanism, of the density measurement module; the transfer mechanism comprises an overturning clamp for clamping a sample, and a first side rotating cylinder and a second side rotating cylinder for adjusting the posture of the sample; a second motor is arranged on the machine table, the second motor is connected with a screw sliding seat, a first side rotating air cylinder is arranged on the screw sliding seat, a second side rotating air cylinder is arranged on an output shaft of the first side rotating air cylinder, an overturning clamp is arranged on an output shaft of the second side rotating air cylinder, the overturning clamp is arranged above the outer side of the rotating disc, and a sample weighing station is arranged on the outer side of the overturning clamp. The test consistency is good, personal errors are reduced, and the test repeatability and reliability are improved.

The invention relates to the technical field of storage tank monitoring and sampling, and discloses a storage tank intelligent monitoring and sampling integrated system and method.The system comprises a reducing winch module, a sensing detection module, an isolation replacement module, a sampling verification module, a ground transfer module and a control calculation module; the variable-diameter winch module eliminates the self-weight load of a cable through a non-linearly changed winding radius and is matched with the sensing detection module to collect high-signal-to-noise-ratio mechanical data; the control resolving module inverts the medium density and viscosity based on the net load moment, identifies the layering position and generates a sampling plan; after the sampling verification module executes sampling, the sampling verification module is matched with the variable-diameter winch module to verify the sampling quality by utilizing mechanical frequency sweep excitation and frequency domain response characteristics; the ground transfer module calls the inversion density data to convert the standard sampling volume into the target filling mass; according to the invention, the online inversion of the rheological property of the medium, the non-contact verification of the sampling quality and the full-flow closed automatic operation are realized.

The invention discloses a drilling fluid density sensor for petroleum engineering, which comprises a blocking cavity, a scraping structure, a rotating structure, a tension measuring structure and a linkage mechanism, and is characterized in that the blocking cavity is arranged in a drilling fluid tank, and the bottom of the blocking cavity is provided with a notch for exchanging drilling fluid; the scraping structure communicates with the top of the blocking cavity through a fixing sleeve and is provided with a scraper part capable of being triggered to be opened and closed. The rotating structure is rotatably sleeved in the fixed sleeve through the rotating sleeve; the metering end of the tension measuring structure is installed at the top of the drilling fluid tank and is downwards connected with a pull rope, the pull rope penetrates through the rotating sleeve and then is connected with a floater, and the floater is immersed in the drilling fluid; the linkage mechanism is arranged on the blocking cavity so as to lift the floater, and physical zero clearing of the floater is achieved after the floater rotates on the scraper part. According to the invention, electronic zero clearing of the tension measuring structure can be realized, and physical zero clearing of floater change can also be realized, so that the accuracy of drilling fluid density measurement is improved.

The invention discloses a device and a method for determining the wet true density of ion exchange resin, and the method comprises the following steps: placing an ion exchange resin sample to be tested at the bottommost end of a first container, and recording the mass of the ion exchange resin sample to be tested in air; opening the buckle, enabling the ion exchange resin sample to be tested to freely fall into the second container, and recording the mass of the ion exchange resin sample to be tested in the auxiliary liquid; and calculating the wet true density according to the mass of the ion exchange resin sample to be tested in the air and the mass of the ion exchange resin sample to be tested in the auxiliary liquid. According to the method, the Archimedes principle is utilized to test the wet true density of the ion exchange resin, the ion exchange resin to be tested flows into the auxiliary liquid, the mass of the ion exchange resin to be tested only needs to be recorded twice in the testing process, and the method is simple in step, time-saving, efficient, small in personal error and good in reproducibility.

The invention relates to a method for determining the mixing amount of an anti-icing snow-melting filler based on the structure, performance and snow-melting effect of an asphalt mixture, which comprises the following steps of: performing test piece forming on the asphalt mixture with different snow-melting filler mixing amounts, respectively performing density, freeze-thaw splitting and ice-coagulation rate tests, and drawing a double-coordinate-axis curve graph according to the obtained void ratio, freeze-thaw splitting strength ratio and ice-coagulation rate. The void ratio ranges from 2.0% to 3.5%, and the freeze-thaw splitting strength ratio meets gt; the ice coagulation rate is smaller than 55%, and meanwhile, the range meeting the conditions is the target mixing amount range of the snow melting filler. The evaluation method provided by the invention can effectively determine the range of the addition amount of the snow melting filler in the snow melting asphalt mixture, so that the snow melting asphalt mixture meets the normal pavement performance requirements of an asphalt pavement while ensuring the snow melting effect.