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Solid density detection method and device

A detection method and solid technology, which can be used in measuring devices, specific gravity measurement, instruments, etc., can solve the problems of decreased accuracy, troublesome measurement, and long time consumption, and achieve the effect of fast and accurate measurement, and the density of solids is simple and accurate.

Inactive Publication Date: 2015-01-14
MODENA TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for objects with irregular shapes, it is difficult to accurately calculate the volume V, so the calculated density ρ is rough and imprecise
It is also possible to use the drainage method to measure the volume V, but it is easy to contaminate the sample when the sample is bound, resulting in a decrease in accuracy, and it is more troublesome to measure a solid sample floating on the water surface during detection.
If it is handed over to a professional organization for testing, it will take a long time

Method used

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  • Solid density detection method and device

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Embodiment Construction

[0011] A method for detecting the density of a solid, comprising the following steps: preparing a special-shaped weight that can support or press the solid to be measured and immersed in the liquid, and the weight has a known volume V 1 and mass m 1 , and does not infiltrate the liquid; weigh the mass of the solid to be measured m 2 ; Weigh the special-shaped weight together with the solid to be measured into the known density ρ 液 weight in liquid m 3 ; by the formula

[0012]

[0013] Find the density ρ of the solid to be measured 固 .

[0014] When the special-shaped weight and the solid to be tested are suspended and completely immersed in the liquid, the buoyancy

[0015] f 浮 =m 1 +m 2 -m 3 (1)

[0016] by Archimedes' law

[0017] f 浮 = ρ 液 gV (2)

[0018] and

[0019] V=V 1 +V 固 (3)

[0020] m 2 = ρ 固 V 固 (4)

[0021] Combined with formulas 1-4, the formula ρ can be obtained 固 .

[0022] Such as figure 1 As shown, in order to realize...

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Abstract

The invention discloses a solid density detection method, comprising the following steps: preparing a special weight capable of bearing or pressing a to-be-detected solid to immerse into liquid, wherein the weight has known V1 and mass m1 and is not infiltrated by the liquid; weighing the mass m2 of the to-be-detected solid; weighing the mass m3 of the special weight together with the to-be-detected solid immersed into the liquid with the known density being rho(liquid); and determining the density rho(solid) of the to-be-detected solid by virtue of a formula. A detection device adopting the method comprises a container and a special weight, wherein the container is used for weighing and containing the liquid; the special weight is partitioned into an upper cavity and a lower cavity; and a communicating hole is formed between the upper cavity and the lower cavity of the weight. Due to adoption of the solid density detection method and device disclosed by the invention, measurement of the solid density is simple and accurate, and on-site rapid and accurate measurement of the density of a solid sample can be achieved.

Description

technical field [0001] The invention relates to the technical field of solid density detection, in particular to a method and a device for solid density detection. Background technique [0002] Usually the rough detection of solid density is to weigh the sample mass m, calculate the sample volume V, and then calculate the density ρ. However, it is difficult to accurately calculate the volume V for objects with irregular shapes, so the calculated density ρ is rough and imprecise. The drainage method is also used to measure the volume V, but it is easy to contaminate the sample when the sample is bound, resulting in a decrease in accuracy, and it is more troublesome to measure a solid sample floating on the water surface during detection. If it is handed over to a professional organization for testing, it will take a long time. Therefore, it is necessary to develop a simple and accurate solid density detection method and device thereof. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/00
Inventor 赖文钟路生张晓宇
Owner MODENA TECH LTD
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