4results about "Material analysis by measuring buoyant forces" patented technology

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.

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 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.