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Supercritical CO2 reaction kettle and rock mass creep, diffusion and erosion test system

A supercritical, reaction kettle technology, which is used in soil material testing, material inspection products, weather resistance/light resistance/corrosion resistance, etc. It can solve problems such as difficulty in seepage diffusion theory and numerical simulation, and error in test results.

Active Publication Date: 2018-05-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently for rock mass in supercritical CO 2 In the study of creep, diffusion and erosion in the environment, the relevant seepage diffusion theory and numerical simulation are difficult to predict accurately, and most of them are studied by means of laboratory tests, that is, the cylindrical rock mass specimen is immersed in the Supercritical CO 2 After the preset time, the specimen was taken out and placed on the triaxial testing machine, the axial load was applied, and the creep, seepage diffusion and erosion reaction tests were carried out through oil injection to load the confining pressure. During the creep, seepage diffusion and erosion reaction tests of the body, the specimen has been out of the supercritical CO 2 environment, there is a large error in the test results

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  • Supercritical CO2 reaction kettle and rock mass creep, diffusion and erosion test system
  • Supercritical CO2 reaction kettle and rock mass creep, diffusion and erosion test system

Examples

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Embodiment 1

[0023] This embodiment provides a supercritical CO 2 Reactor, providing supercritical CO for the specimen 2 Environment, including a kettle body 2 with a test chamber 1, a heating layer 3 arranged in the side wall of the kettle body 2, a temperature sensor and a pressure sensor arranged in the test chamber 1, and a sealing cover for sealing the opening of the kettle body 2 4. The test piece fixing assembly arranged on the sealing cover 4 and the hydraulic loading assembly for applying axial load to the test piece 100; the kettle body 2 is provided with an air inlet / outlet pipe connecting the test chamber 1 and the external environment of the kettle body 2 5; the air inlet / outlet pipe 5 is provided with an air valve 6; the specimen fixing assembly includes a guide pole 7 and an upper cushion block 8 and a lower cushion block 9 which are slidably arranged on the guide pole 7; the number of guide poles 7 is at least There are two, the first end is connected to the inner surface ...

Embodiment 2

[0035] In this embodiment, the supercritical CO described in Example 1 2 Based on the reactor, provide specific design values:

[0036] The inner diameter of the test chamber 1 ranges from 80 mm to 120 mm, and the height ranges from 160 mm to 200 mm; the diameter of the sealing cover 4 ranges from 150 mm to 180 mm, and the thickness ranges from 20 mm to 50 mm. The edges of the sealing cover 4 are evenly distributed along the circumference Twelve connecting holes 17, the diameter of which is determined according to the size of the bolt 19; the depth range of the threaded hole 16 on the open end face of the kettle body 2 is 15 mm-25 mm; the bolt 19 is a hexagon socket bolt; the thickness range of the sealing gasket 18 The heating layer 3 is evenly arranged in the side wall of the kettle body 2, which is equal to the test chamber 1, and the thickness is 30 mm; the inner diameter of the loading oil chamber 11 is 50 mm, and the wall thickness ranges from 5 mm to 10 mm. mm, the sli...

Embodiment 3

[0038] This embodiment provides a rock mass creep diffusion erosion test system, including a hydraulic loading system, an intelligent temperature control system, a temperature-pressure monitoring system, a carbon dioxide injection system, a vacuum system, and the supercritical CO 2 Reactor; supercritical CO 2 The oil inlet pipe 13 of the reactor is connected to the hydraulic loading system, the heating layer 3 is connected to the intelligent temperature control system, the temperature sensor and the pressure sensor are connected to the temperature-pressure monitoring system, and the gas inlet / outlet pipe 5 is connected to the carbon dioxide injection system or the vacuum system; The temperature-pressure monitoring system is used to detect the temperature and pressure in the test chamber 1, and feed back the detected value of temperature to the intelligent temperature control system to display the detected value of pressure in real time; the intelligent temperature control syste...

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Abstract

The invention provides a supercritical CO2 reaction kettle and a rock mass creep, diffusion and erosion test system and belongs to the technical field of rock mass test. The reaction kettle comprisesa kettle body with a test chamber, a heating layer arranged in the side wall of the kettle body, a temperature sensor and a pressure sensor arranged in the test chamber, a sealing cover used for sealing an opening of the kettle body, a test piece fixing assembly arranged on the sealing cover and a hydraulic loading assembly used for applying axial load onto a test piece; a gas inlet / outlet pipe communicated with the test chamber and an external environment of the kettle body is arranged on the kettle body; a gas valve is arranged on the gas inlet / outlet pipe; the test piece fixing assembly comprises a guide vertical rod, an upper cushion block and a lower cushion block, wherein the upper cushion block and the lower cushion block are arranged on the guide vertical rod in a sliding manner; the hydraulic loading assembly comprises a loading oil chamber and an axial loading rod. The reaction kettle provides a supercritical CO2 environment when the rock mass test piece is subjected to a creep, seepage diffusion and erosion reaction test of a rock mass in a tri-axial stress state.

Description

technical field [0001] The invention relates to the technical field of rock mass testing, in particular to a supercritical CO 2 Reactor and rock mass creep diffusion erosion test system. Background technique [0002] The critical pressure of carbon dioxide is 7.39MPa, and the critical temperature is 31.06°C. When the environment where carbon dioxide is located exceeds the critical temperature and critical pressure, it enters a supercritical state. Supercritical CO 2 It is a supercritical fluid that exists neither in a gaseous state nor in a liquid state, and it not only has the characteristics of greater solubility of liquid solutes, but also has the characteristics of easy diffusion and movement of gases. Due to supercritical CO 2 At the same time, it has the characteristics of being cheap, easy to obtain, non-toxic, non-polluting and non-flammable, which has attracted widespread attention from all walks of life and is being used in various fields. [0003] With the conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N15/08G01N17/00
CPCG01N3/12G01N15/082G01N17/00G01N3/10G01N3/18G01N17/002G01N33/24G01N3/00G01N3/567G01N15/0806
Inventor 张纯旺金智新冯国瑞宋选民
Owner TAIYUAN UNIV OF TECH