Carbon dioxide underground sealing test device

Abstract

The utility model discloses a carbon dioxide underground sealing test device which comprises a test bed, a test box, a pressurizing oil cylinder and a sample clamping mechanism, the test box is fixedly arranged on the test bed, a containing cavity with two open ends is arranged in the test box, a sample loading mechanism comprises a base, the base is arranged on the test bed in a sliding mode, and the pressurizing oil cylinder is arranged on the base. A sealing plate is fixedly installed on the base, a bearing head is fixedly installed on the side face of the sealing plate, at least three guide connecting rods are fixedly installed on the bearing head in the circumferential direction at equal intervals, ballast heads are slidably installed on the guide connecting rods, the space between the ballast heads and the bearing head is used for loading a sample, and the sample can slide into the containing cavity from the first end opening by sliding the base. The pressurizing oil cylinder is fixedly installed on the test bed, a piston rod of the pressurizing oil cylinder can stretch into the containing cavity from the second end opening, and the sample is pressurized through the ballast head. The device is used for simulating carbon dioxide underground sequestration, various parameters are obtained through tests, and technical support is provided for practical application.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide sequestration, and in particular to an underground carbon dioxide sequestration test device. Background Technique

[0002] As a greenhouse gas, carbon dioxide is the main factor leading to global warming. With the rapid development of social economy, the carbon dioxide emissions generated by industrial production and human activities are increasing day by day, and the greenhouse effect seriously threatens the climate balance and ecological environment. How to effectively control and reduce the emissions of greenhouse gas carbon dioxide has become a severe problem faced by all countries in the world. In addition to reducing emissions, geological sequestration of carbon dioxide is another way to reduce carbon dioxide emissions. After capturing carbon dioxide from energy-intensive industrial emission sources such as coal power and metallurgy, it is injected into deep geological structures (deep underground, seabed, depleted oil and gas reservoirs, etc.) for carbon dioxide sequestration, avoiding the direct emission of carbon dioxide gas into the atmosphere, which is an important development direction in the fields of carbon dioxide emission reduction and greenhouse gas treatment. At present, the geological sequestration technology of carbon dioxide is still in its infancy, and the relevant processes are not yet familiar. It is necessary to design an underground carbon dioxide sequestration test device for relevant theoretical research. Content of the Utility Model

[0003] The purpose of the utility model is to provide an underground carbon dioxide sequestration test device, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above purpose, the technical solution adopted by it is as follows:

[0004] An underground carbon dioxide sequestration test device includes a test bench, a test chamber, a pressurizing oil cylinder and a specimen clamping mechanism. The test chamber is fixedly installed on the test bench. The test chamber has a receiving cavity with both ends open. The specimen loading mechanism includes a base, the base is slidably installed on the test bench, a sealing plate is fixedly installed on the base, a bearing head is fixedly installed on the side surface of the sealing plate, and at least three guiding connecting rods are fixedly installed at equal intervals along the circumferential direction on the bearing head. A ballast head is slidably installed on the guiding connecting rods. The ballast head and the bearing head are used to load the specimen. By sliding the base, the specimen can be slid into the receiving cavity from the first open end, and the sealing plate is fixedly connected to the test chamber. The pressurizing oil cylinder is fixedly installed on the test bench, and the piston rod of the pressurizing oil cylinder can extend into the receiving cavity from the second open end to pressurize the specimen through the ballast head.

[0005] Preferably, a carbon dioxide sequestration cavity is arranged inside the specimen, and an air duct connected to the carbon dioxide sequestration cavity is arranged on the side of the specimen in contact with the bearing head. The air duct can sequentially pass through the bearing head and the sealing plate.

[0006] Preferably, the test chamber includes a housing, an inner liner is arranged inside the housing, and a heating coil is wound around the outer wall of the inner liner for heating the receiving cavity.

[0007] Advantages of the present utility model compared with the prior art:

[0008] A carbon dioxide underground storage test device of the present utility model simulates carbon dioxide underground storage through this device, and obtains various parameters through tests, providing technical support for practical applications. In addition, the entire device has a simple structure, no complex components, is easy to process, and has a low manufacturing cost. Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for the implementation will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 It is a schematic diagram of the overall structure of the test device of the present utility model.

[0011] Figure 2 It is a schematic diagram of the structure of the specimen loading mechanism of the present utility model.

[0012] In the figure: 1. Test bench; 2. Pressurizing oil cylinder; 3. Test chamber; 4. Base; 5. Slide rail; 6. Sealing plate; 7. Bearing head; 8. Guide link; 9. Ballast head; 10. Specimen; 11. Gas conduit. Specific Embodiments

[0013] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

[0014] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0015] As Figure 1 shown, a preferred embodiment of the present utility model provides a carbon dioxide underground storage test device, which includes a test bench 1, on which a pressurizing oil cylinder 2, a test chamber 3, and a specimen clamping mechanism are sequentially arranged from left to right.

[0016] The test chamber 3 is fixedly installed on the test bench 1 through a bracket. The test chamber 3 is of a cylindrical structure and includes a housing. An inner container is arranged inside the housing, and a heat insulation layer is provided between the inner container and the housing. An accommodating cavity with both ends open is formed inside the inner container, and a heating coil is wound around the outer wall of the inner container for heating the accommodating cavity.

[0017] As Figure 2 shown, the specimen loading mechanism includes a base 4. The base 4 is slidably installed on the test bench 1. Specifically, two slide rails 5 are arranged at intervals in the front-back direction on the test bench 1, and each slide rail 5 is arranged in the left-right direction. Two sliders are provided at the bottom of the base 4, and the two sliders are respectively slidably connected to the corresponding slide rails 5. A sealing plate 6 is fixedly installed on the base 4, and a bearing head 7 is fixedly installed on the left side surface of the sealing plate 6. The sealing plate 6 and the bearing head 7 form a combined body, and a through hole is provided at the middle position of the combined body. At least three guiding connecting rods 8 are fixedly installed at equal intervals in the circumferential direction on the bearing head 7. Preferably, four guiding connecting rods 8 are provided in the present utility model, and each guiding connecting rod 8 is arranged in the left-right direction. A ballast head 9 is slidably installed on the guiding connecting rod 8, and the ballast head 9 and the bearing head 7 are used for loading the specimen 10.

[0018] Sliding the base 4 to the left can completely slide the specimen 10 into the accommodating cavity from the open end at the first end, and fixedly connect the sealing plate 6 and the test chamber 3 with bolts.

[0019] A carbon dioxide storage cavity is arranged inside the specimen 10, and an air guide pipe 11 communicating with the carbon dioxide storage cavity is arranged on the side of the specimen 10 in contact with the bearing head 7. The air guide pipe 11 passes through the through hole and is connected to an external carbon dioxide gas source.

[0020] The pressure intensifying oil cylinder 2 is fixedly installed on the test bench 1 through a bracket. The piston rod of the pressure intensifying oil cylinder 3 can extend into the accommodating cavity from the open end at the second end to pressurize the specimen 10 through the ballast head 9.

[0021] Through the above test device, relevant theoretical research on underground carbon dioxide storage can be carried out. For example, when the pressure intensifying oil cylinder 2 loads a pressure of ten tons on the specimen 10 and the temperature in the accommodating cavity remains at 100 °C, how much external pressure is required to inject a certain amount of carbon dioxide, or when the pressure intensifying oil cylinder 2 loads a pressure of ten tons on the specimen 10 and the temperature in the accommodating cavity remains at 100 °C, how much carbon dioxide can be injected under a certain external pressure.

[0022] In summary, for a carbon dioxide underground storage test device described in an embodiment of the present utility model, carbon dioxide underground storage is simulated through this device, and various parameters are obtained through tests to provide technical support for practical applications. In addition, the entire device has a simple structure, no complex structural components, is easy to process, and has a low manufacturing cost.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A carbon dioxide underground storage test device, characterized in that: It includes a test bench, a test box, a pressurized oil cylinder and a sample clamping mechanism. The test box is fixedly installed on the test bench, and the test box has a accommodating cavity with two ends open. The sample loading mechanism includes a base, which is slidably installed on the test bench, and a sealing plate is fixedly installed on the base. A bearing head is fixedly installed on the side of the sealing plate, and at least three guide connecting rods are fixedly installed at equal intervals along the circumferential direction of the bearing head. A ballast head is slidably installed on the guide connecting rod, and the ballast head and the bearing head are used for loading the sample. The sample can be slid into the accommodating cavity from the first end opening by sliding the base, and the sealing plate is fixedly connected to the test box. The pressurized oil cylinder is fixedly installed on the test bench, and the piston rod of the pressurized oil cylinder can extend into the accommodating cavity from the second end opening, and the sample is pressurized by the ballast head.

2. A carbon dioxide underground storage test device according to claim 1, characterized in that: A carbon dioxide sealing cavity is arranged inside the sample, and an air guide tube connected to the carbon dioxide sealing cavity is arranged on the side of the sample in contact with the carrier head, and the air guide tube can pass through the carrier head and the sealing plate in sequence.

3. A carbon dioxide underground storage test device according to claim 1, characterized in that: The test box comprises a shell, an inner shell is arranged inside, and a heating coil is wound around the outer wall of the inner shell for heating the containing cavity.

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