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A non-interference weighing device suitable for specific temperature and humidity environment

A weighing device, temperature and humidity technology, applied in the field of geotechnical engineering, can solve problems such as quality change and humidity change, and achieve the effect of reducing quality change, reducing personnel input, improving test quality and test data accuracy

Active Publication Date: 2017-06-06
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual test method is to take the sample out of the sealed tank and put it back into the sealed tank after weighing. In this process, the sealed tank is opened for a period of time during the process of taking the sample. The water vapor exchanged, resulting in a change in the relative humidity in the tank within a period of time after the sample was put back into the sealed tank; in addition, when the sample was taken, the sample would also be exposed to the air, and its quality would also undergo slight changes. The occurrence of these two situations will have a certain impact on the test results.

Method used

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  • A non-interference weighing device suitable for specific temperature and humidity environment
  • A non-interference weighing device suitable for specific temperature and humidity environment
  • A non-interference weighing device suitable for specific temperature and humidity environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, salt solution method test:

[0037] First add water to the water bath box 1, and cover the box cover 4 after adding water. Pour an appropriate amount of different kinds of saturated salt solutions 7 into the ten airtight tanks 6 respectively. Put the prepared ring knife soil sample into the sample basket 8, after the hanging rod 11 is inserted into the round hole on the sealing cover 10, the hook at the lower end of the hanging rod 11 hooks the sample basket 8 and puts it into the sealed tank 6, and Carefully close the sealing cap 10. These sealed tanks 6 were then inserted into the water bath 1 through the round holes on the case cover 4, the water bath 1 was turned on and the temperature was set to 25°C. Before the ring knife soil sample is put into the sample basket 8, the quality of the hanging rod 11 and the sample basket 8 is weighed out by a Mettler balance with an accuracy of one thousandth and recorded as m 00 、m 01 、m 02 …m 09. After the w...

Embodiment 2

[0038] Embodiment 2, filter paper calibration test:

[0039] First add water to the water bath box 1, and cover the box cover 4 after adding water. Pour appropriate amount of NaCl solutions with different molar concentrations into ten sealed tanks 6 respectively. Put the filter paper sample into the sample loading basket 8, insert the hanging rod 11 into the round hole on the sealing cover 10, hook the lower end of the hanging rod 11 to hook the sample loading basket 8 into the airtight tank 6, and carefully cover and seal Cover 10. These sealed tanks 6 were then inserted into the water bath 1 through the round holes on the case cover 4, the water bath 1 was turned on and the temperature was set to 25°C. Before the filter paper sample is put into the sample basket 8, first weigh the quality of the hanging rod 11 and the sample basket 8 with a Mettler balance with an accuracy of 1 / 10,000 and record them as m 00 、m 01 、m 02 … m 09 . After the water bath box 1 starts to wo...

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Abstract

The invention discloses an interference-free weighing device applied to a specific temperature and humidity environment. The device comprises a water bath containing water, and a sealed tank containing a saturated salt solution, wherein a box cover is arranged on the water bath; a sealing cover is arranged on the sealed tank; a hole is formed in the box cover; the sealing cover covers the sealed tank and is exposed out of the water bath by virtue of the hole in the box cover; a test piece is arranged in a sample carrying basket, a hanging rod is inserted into the sealing cover, the lower end of the hanging rod hooks the sample carrying basket, the sample carrying basket is arranged in the sealed tank, and the sealed tank is arranged in the water bath; a guide rail rack is erected above the water bath; and an electronic scale is arranged on the guide rail rack. According to the interference-free weighing device applied to the specific temperature and humidity environment disclosed by the invention, the sample can be repeatedly weighed under the condition that the sealed tank is not opened, and disturbance of water vapor in the sealed tank is avoided, so that the sample is always positioned in the specific temperature and humidity environment.

Description

technical field [0001] The invention relates to a non-interference weighing device applicable to a specific temperature and humidity environment, relates to the weighing of experimental samples and the measurement of total soil suction, and belongs to the technical field of geotechnical engineering. Background technique [0002] Humidity control technology is an important technology for measuring soil suction in geotechnical engineering. Its basic principle is: the suction value can be calculated by the relative humidity through the Kelvin formula. During the test, the sample is placed in a sealed environment. The relative humidity in the environment is used to control the soil suction. When the water vapor exchange in the sample reaches equilibrium, the soil suction can be considered to have reached the suction value that needs to be controlled. At present, the methods using this technology in soil suction measurement include the salt solution method and the calibration cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/00
Inventor 张华张沣申科袁密李茂曹金露
Owner CHINA THREE GORGES UNIV
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