17results about "Material analysis by measuring buoyant forces" patented technology

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 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.

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.

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 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.

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 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.

The technology relates to a battery cell jig including a spacer, a battery cell volume measuring apparatus including the battery cell jig, and a battery cell volume measuring method performed by using the apparatus. According to the present invention, 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 using the principle of Archimedes by including a slit opened along a longitudinal direction in the spacer.