Ture triaxial rock test machine with temperature control system and temperature control method thereof

Abstract

The invention discloses a ture triaxial rock test machine with a temperature control system. The machine comprises a loading component, a temperature control system, and a cooling component, wherein the loading component comprises a loading housing and a loading oil cylinder, and the loading housing is provided with adjusting screw holes and is internally provided with a loading chamber; the adjusting screw holes and movable push rods are screwed and assembled by screw threads; three loading rods for loading oil cylinders enter the loading chamber through the cooling components separately; wherein two loading rods and two movable push rods are respectively coaxial, and the third loading rod penetrates the top of the loading housing; the top of the loading chamber is also communicated with an exhaust pipe and an oil inlet, the exhaust pipe is communicated with an overflow bin after passing through a tube body whose height is not less than the height of the loading chamber, and the exhaust pipe is also provided with a reversing valve; the invention also discloses a temperature control method of the temperature control system. The temperature control method is equipped with a heating step and a cooling step which can automatically search optimum, in order to maximize heating or cooling efficiency of the oil body.

Description

technical field [0001] The invention relates to a true triaxial rock testing machine with a temperature control system, which is used for testing the mechanical properties of rock or concrete. [0002] The present invention also relates to the oil temperature control system of the true triaxial rock testing machine and the oil temperature control method based on the system. Background technique [0003] In the test of various mechanical properties of rock, the true triaxial rock testing machine is a commonly used equipment, which is mainly used to provide three directions and unequal pressures on rock samples or concrete samples, so as to simulate the rock in the formation. in the real stress state. In addition, the existing true triaxial rock testing machine generally needs to soak the sample in high-pressure or high-temperature and high-pressure oil to simulate the confining pressure and temperature suffered by the sample. [0004] When the sample needs to be immersed in...

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Problems solved by technology

The general method is to heat the oil body to a specified temperature in an intermediate storage device, and then discharge it into the loading chamber. This method will increase the manufacturing cost, and it also needs to keep the intermediate storage device warm, which is very costly. The important thing is that the controllability of the oil temperature is poor. Usually, the oil temperature of the final soaked sample has a large error from the preset temperature, which makes the accuracy of the test data poor.

[0005] In addition, after the test, the high-temperature oil body generally needs to be cooled by an intermediate device before it can be stored in the oil tank, which will also increase the cost of equipment manufacturing and the loss of the oil body

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