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Soil thermal parameter automatic measuring equipment

A measuring device and soil heat technology, applied in the field of soil physics research, can solve problems such as time-consuming and laborious

Inactive Publication Date: 2008-03-12
INST OF SOIL & WATER CONVERVATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The direct measurement method is mainly based on the basic equation of soil heat transfer, and calculates the soil heat transfer parameters by measuring the soil temperature distribution. This method is time-consuming and laborious, but it is still a classic and standard method for determining soil heat parameters.

Method used

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  • Soil thermal parameter automatic measuring equipment
  • Soil thermal parameter automatic measuring equipment

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Embodiment Construction

[0020] Referring to Fig. 1, soil thermal parameter automatic measuring device of the present invention comprises:

[0021] Soil level column 1 is used to place the soil sample to be tested. One end of the soil level column is provided with a cooling chamber 2. There is a water inlet 3 and a water outlet 4 on the cooling chamber 2. The other end has a closed cover 9. On the soil level column Thermocouple probes 7 for measuring temperature are evenly distributed on the wall of 1;

[0022] The feeder 6 is used to keep the temperature at one end of the soil level column 1 constant, the feeder 6 is filled with ice water mixture, the feeder 6 is connected with a micro water pump 10, the micro water pump 10 is cooled by the water guide pipe 5 and the soil level column 1 The water inlet 3 on the chamber 2 is connected; the water outlet 4 on the cooling chamber 2 of the soil level column 1 is also connected to the feeder 6 through the water guide pipe 5;

[0023] The feeder 6 is made ...

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Abstract

The present invention discloses an automatic soil thermal parameter measuring device, which comprises a horizontal soil column, a cooling chamber arranged at one end of the horizontal soil column, a water inlet and a water outlet on the cooling chamber, a thermocouple probe evenly distributed on a wall of the horizontal soil column to measure temperature, a feeder, mixture of water and ice in the feeder and a miniature water pump connected with the feeder. Wherein, the miniature water pump is connected with the water inlet of the cooling chamber of the horizontal soil column through a water supply pipe. The water outlet of the cooling chamber of the horizontal soil column is connected with the feeder through a water supply pipe. In addition, a data measuring and automatic collection unit is provided and connected with the thermocouple probe through a data cable to automatically collect temperature variation of the horizontal soil column in different positions and acquire soil thermal diffusivity according to actually measured temperature variation. The device can automatically measure soil thermal parameters. Parameters acquired according to measuring data are identical with actual ones.

Description

technical field [0001] The invention relates to a measuring device in the field of soil physics research, in particular to a soil thermal parameter automatic measuring device. Background technique [0002] Soil is the supply and storage place of various energy required for crop growth. Prediction and forecasting and timely regulation of the material cycle process in soil are important contents for the implementation of efficient agricultural water use and ecological environment construction. Soil thermal properties significantly affect the absorption and utilization of various nutrient elements of crops and the normal growth of plants, so revealing soil thermal characteristics is also the basis of plant growth research. [0003] Soil thermal properties are important factors affecting crop growth and water and fertilizer availability, while soil thermal parameters are the basic parameters that determine soil heat transfer and are the internal conditions that affect soil therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N33/24
Inventor 王全九樊军李婷
Owner INST OF SOIL & WATER CONVERVATION CHINESE ACAD OF SCI
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