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Method for measuring density of object

An object and density technology, applied in the field of measurement, can solve the problem of no method or means to obtain the object density curve, inability to perform engineering calculations, etc., to achieve the effect of easy operation, reasonable process and scientific principle

Inactive Publication Date: 2014-12-24
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the face of substances of different materials and states, there is often no way to obtain the density curve of the object changing with temperature, and there is no mature method for reference in the existing technology, which makes it impossible to perform engineering calculations

Method used

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  • Method for measuring density of object
  • Method for measuring density of object

Examples

Experimental program
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Effect test

Embodiment

[0030] Measure the density of PEPSET resin sand block, its temperature is 28 ℃, the specific implementation steps are as follows:

[0031] (1) Heat the object to be measured to a temperature of 28°C required for density measurement;

[0032] (2) The object to be measured is placed in a container, the container is also provided with a pressure sensor and a container temperature sensor connected to the outside, the container is provided with a piston, and the piston seals the container and can move up and down;

[0033] (3) Place the object to be measured together with the airtight container on the weighing scale, and measure the mass of the object to be measured as m=0.5kg;

[0034] (4) Apply an outward pulling force F1 on the piston above the closed container to make the container in a negative pressure state. After applying F1, the pressure P1 in the container should meet: 0.5atm<P1<1atm;

[0035] (5) Measure the pressure P1=0.8atm and temperature T1=28°C of the air in the a...

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Abstract

The invention relates to a method for measuring the density of an object. In the method, the temperature of the object is set at a temperature required during density measurement, the mass of the object is measured, then, negative pressure is exerted on the environment where the object is placed for two times, the temperature, the volume and the pressure of gas during the two-time negative pressure exertion are measured, and the density value of the object is calculated through a formula. The method is scientific in principle, reasonable in process, simple in process and easy to operate; a result is high in precision; through actual application, an ideal effect is achieved.

Description

technical field [0001] The invention relates to a measuring method, in particular to a method for measuring the density of an object. Background technique [0002] In scientific research and engineering practice, the density parameter is an important parameter in the engineering calculation simulation process and scientific research experiment process. As an important material parameter, it has a great influence on physical and chemical processes such as heat transfer, mass transfer and momentum transfer. In the existing measurement methods of density parameters, most of them use the liquid discharge method to obtain the volume of the measured object, and then weigh the measured object to obtain the average density of the measured object. A solid density measurement method" patent, the publication number is CN101078677, but this method cannot measure the volume of the measured object with water absorption or water reaction, those objects that are not suitable for contact wi...

Claims

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Application Information

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IPC IPC(8): G01N9/00
Inventor 张永夏峰董丽波张爽韩永华于忠军刘洪汇解维生
Owner HARBIN DONGAN ENGINE GRP
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