Supercritical CO2 reactor and test system of creepage, diffusion and erosion of rock mass

Patent metadata

Field	Value
Publication number	US-10690649-B2
Application number	US-201816217031-A
Country	US
Kind code	B2
Filing date	Dec 11, 2018
Priority date	Dec 28, 2017
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A supercritical CO2 reactor and a test system of creepage, diffusion and erosion of rock mass. The supercritical CO2 reactor includes a reactor body having a test chamber, a heating layer arranged in a side wall of the reactor body, a temperature sensor and a pressure sensor arranged in the test chamber, a sealing cover configured to seal an opening of the reactor body, a fixing component arranged on the sealing cover, a hydraulic loading component configured to apply an axial load on the specimen. The reactor body is provided with an air inlet/outlet pipe configured to communicate the test chamber with external environment. The air inlet/outlet pipe is provided with a air valve, and the fixing component includes vertical guide bars, an upper pad and a lower pad slideably arranged on the vertical guide bars. The hydraulic loading component includes a oil-loading tank and an axial loading rod.

First claim

What is claimed is:

1. A supercritical CO 2 reactor for providing a supercritical CO 2 environment to a specimen, comprising:
a reactor body having a test chamber,
a heating layer arranged in a side wall of the reactor body,
a temperature sensor and a pressure sensor arranged in the test chamber,
a sealing cover configured to seal an opening of the reactor body,
a fixing component arranged on the sealing cover, and
a hydraulic loading component configured to apply an axial load on the specimen; wherein
the reactor body is provided with an air inlet/outlet pipe configured to communicate the test chamber with an external environment;
the air inlet/outlet pipe is provided with an air valve;
the fixing component comprises at least two vertical guide bars, and an upper pad and a lower pad slidably arranged on each of the vertical guide bars;
a first end of each vertical guide bar is connected to a lower surface of the sealing cover; a second end of each vertical guide bar is provided with a limit part;
the vertical guide bar, the upper pad and the lower pad form a fixing area;
the hydraulic loading component comprises an oil-loading tank and an axial loading rod;
the oil-loading tank is sealingly arranged on an upper surface of the sealing cover and provided with an oil inlet pipe;
the oil inlet pipe is provided with an oil valve;
a first end of the axial loading rod is slidably arranged in the oil-loading tank; a second end of the axial loading rod passes through the sealing cover and faces the upper pad; and the axial loading rod is in sealed contact with the oil-loading tank and the sealing cover.

2. The supercritical CO 2 reactor of claim 1 , wherein the reactor body is provided with a lead wire hole for connection of the temperature sensor and/or the pressure sensor.

3. The supercritical CO 2 reactor of claim 1 , wherein
an end face of the opening of the reactor body is provided with a plurality of threaded holes extending in an axial direction;
the sealing cover is provided with a plurality of connecting holes axially penetrating the sealing cover and corresponding the threaded holes; and
a sealing washer is arranged between the reactor body and the sealing cover and is fixed by a plurality of bolts.

4. The supercritical CO 2 reactor of claim 1 , wherein the supercritical CO 2 reactor further comprises an insulating layer, and the insulating layer encloses the reactor body and is higher than the open end face of the reactor body at a distance of 10-20 mm.

5. The supercritical CO 2 reactor of claim 1 , wherein the upper pad and the lower pad each comprise a connecting part connected to the vertical guide bars and a fixing part configured to fix the specimen; the connecting part and the fixing part are both cylindrical; and a radius of the connecting part is at least a sum of a diameter of the vertical guide bar and a radius of the fixing part.

6. The supercritical CO 2 reactor of claim 1 , wherein the first end of the vertical guide bar is in threaded connection with the sealing cover; the limit part is a limit nut in threaded connection with the vertical guide bar.

7. The supercritical CO 2 reactor of claim 1 , wherein the oil-loading tank is in threaded connection with the sealing cover.

8. The supercritical CO 2 reactor of claim 1 , wherein two positioning pivot rods are symmetrically provided on the sealing cover.

9. The supercritical CO 2 reactor of claim 1 , wherein the air inlet/outlet pipe and the oil inlet pipe are both stainless steel pipes, and the air valve and the oil valve are both stainless needle valves and are connected with the stainless steel pipes through adjustable thread joints.

10. A test system of creepage, diffusion and erosion of rock mass, comprising:
a hydraulic loading system,
an intelligent temperature control system,
a temperature-pressure monitoring system,
a CO 2 injection system,
a vacuuming system, and
the supercritical CO 2 reactor of claim 1 ; wherein
the oil inlet pipe is connected to the hydraulic loading system;
the heating layer is connected to the intelligent temperature control system;
the temperature sensor and pressure sensor are connected to the temperature-pressure monitoring system;
the air inlet/outlet pipe is connected to the CO 2 injection system or the vacuuming system;
the temperature-pressure monitoring system is configured to detect a temperature value and a pressure value in the test chamber to feed back the detected temperature to the intelligent temperature control system and display the detected pressure in real time; and
the intelligent temperature control system is configured to control a heating temperature of the heating layer based on the detected temperature.

Assignees

• Univ Taiyuan Technology

Inventors

• Zhang Chunwang
• Jin Zhixin
• Feng Guorui
• Song Xuanmin

Classifications

• G01N3/10

  generated by pneumatic or hydraulic pressure (G01N3/18 takes precedence) · CPC title

• G01N3/18

  Performing tests at high or low temperatures · CPC title

• G01N3/00

  Investigating strength properties of solid materials by application of mechanical stress · CPC title

• G01N15/082

  Investigating permeability by forcing a fluid through a sample · CPC title

• G01N33/24 Primary

  Earth materials (G01N33/42 takes precedence) · CPC title