Thermal insulation test box with functions of water supplement at bottom and temperature control

Abstract

The invention discloses a thermal insulation test box with functions of water supplement at bottom and temperature control. The thermal insulation test box comprises a box body, a base plate, a temperature controller, a cold bath, a water supplement barrel, steel balls and copper pipe rings. The box body comprises box walls and a box bottom. The box walls are filled with a polyethylene thermal insulation material, the box bottom comprises the rectangular-ambulatory-plane-shaped copper pipe rings, the upper part of the box bottom is provided with the base plate, the base plate is provided with water supplement holes, a water tank is arranged below the base plate, the copper pipe rings are arranged in the water tank and are connected to the cold bath through connection pipes, the temperature controller connected to the cold bath controls a temperature of a cold liquid in the cold bath, and the steel balls are flat paved in the water tank so that the cold liquid in the copper pipe rings uniformly release heat. The water supplement barrel controls a test box bottom water level and guarantees alignment of the bottom water level and the base plate. Through the connection pipes, the cold liquid in the cold bath is conveyed to the bottom of the test box so that the temperature of the test box bottom is controlled. The thermal insulation test box is used for indoor test research, effectively solves the problem that a soil sample in the test box is not subjected to uniform water supplement and has high temperature control difficulty, has the advantages of use convenience, fastness and accuracy, effectively simulates soil sample natural conditions and provides an approach for a model test.

Description

technical field [0001] The invention relates to the field of indoor geotechnical tests, in particular to a water-supplemented bottom and temperature-controlled thermal insulation test chamber, which is suitable for indoor model tests and is used for studying the changes of physical parameters in the process of freezing and melting inside the soil. Background technique [0002] With the rapid economic development in western my country, a large number of road projects and industrial and civil constructions are built on seasonal frozen soil and permafrost foundations. However, most of the current research on seasonally frozen soil and permafrost is concentrated in indoor research. Due to space constraints and environmental changes, there is a large gap between indoor test results and actual engineering monitoring results, which leads to the credibility of indoor test results. not tall. In order to make the indoor test results closer to the actual monitoring results, it is nece...

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Problems solved by technology

However, most of the current research on seasonally frozen soil and permafrost is concentrated in indoor research. Due to space constraints and environmental changes, there is a large gap between indoor test results and actual engineering monitoring results, which leads to the credibility of indoor test results. not tall

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