Pipeline conveying device and gas conveying system

Abstract

The invention provides a pipeline conveying device and a gas conveying system. The pipeline conveying device comprises a conveying pipeline used for conveying carbon dioxide, and the conveying pipeline is pre-buried underground; the gas storage tank is communicated with the conveying pipeline through a communicating pipeline, and gas in the conveying pipeline is conveyed to the gas storage tank through the communicating pipeline to be temporarily stored; the control valve is arranged on the conveying pipeline and controls opening and closing of the conveying pipeline. The problem that a large amount of CO2 is discharged in the emptying process of a CO2 long-distance pipeline in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas delivery, and in particular to a pipeline delivery device and a gas delivery system. Background Art

[0002] A venting device must be installed in the middle of a long-distance CO2 pipeline. The conventional operation is to discharge the remaining CO2 in the pipeline directly into the air when the pipeline fails or is under maintenance, as a safety process. However, a large amount of CO2 will be emitted during the venting process, which may have an impact on surrounding residents, animals, and crops. Summary of the invention

[0003] The main purpose of the present invention is to provide a pipeline transportation device and a gas transportation system to solve the problem in the prior art that a large amount of CO2 is emitted during the emptying process of a long-distance CO2 pipeline.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a pipeline transportation device, comprising: a transportation pipeline for transporting carbon dioxide, the transportation pipeline being pre-buried underground; a gas storage tank, the gas storage tank being connected to the transportation pipeline through a connecting pipeline, and the gas in the transportation pipeline being transported to the gas storage tank through the connecting pipeline for temporary storage; and a control valve, the control valve being arranged on the transportation pipeline and controlling the opening and closing of the transportation pipeline.

[0005] Furthermore, there are multiple connecting pipelines, including a first connecting pipeline and a second connecting pipeline. The first connecting pipeline and the second connecting pipeline are both connected to the delivery pipeline, and the first connecting pipeline and the second connecting pipeline are both connected to the gas tank.

[0006] Furthermore, the first connecting pipeline and the delivery pipeline form a first connection position, and the second connecting pipeline and the delivery pipeline form a second connection position. Along the delivery direction of carbon dioxide in the delivery pipeline, the first connection position and the second connection position are arranged in sequence.

[0007] Furthermore, there are multiple control valves, and both the first connecting pipeline and the second connecting pipeline are provided with a control valve.

[0008] Furthermore, the first connecting pipeline and the second connecting pipeline are connected to different positions of the gas storage tank respectively.

[0009] Furthermore, the gas storage tank is located below the delivery pipeline.

[0010] Furthermore, the conveying pipeline is pre-buried under the ground to a depth greater than or equal to 1.5 m.

[0011] Furthermore, the gas storage tank has a laterally extending cylindrical structure.

[0012] Furthermore, the pipeline transportation device also includes a safety pipeline, which is connected to the gas storage tank and is provided with a safety valve for exhausting gas.

[0013] According to another aspect of the present invention, a gas delivery system is provided, comprising the above-mentioned pipeline delivery device.

[0014] By applying the technical solution of the present invention, a gas storage tank is provided, and the gas storage tank is connected to the transmission pipeline for conveying carbon dioxide through a connecting pipeline, so that when there is a fault or maintenance in the upstream and downstream and the transmission pipeline needs to be emptied, the control valve can be opened to temporarily store the carbon dioxide in the gas storage tank, so that the transmission pipeline can be emptied and the maintenance of the transmission pipeline can be realized. Since the carbon dioxide is stored in the gas storage tank during the venting, a closed loop is formed, which avoids environmental problems and other adverse effects caused by the external emission of carbon dioxide, and can also avoid the leakage of carbon dioxide, which is helpful for the full process measurement of carbon dioxide. When the pressure of the pipeline is too high, the gas storage tank can also play a buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 The schematic diagram of the structure of the pipeline conveying device of the present invention is shown.

[0017] The above drawings include the following reference numerals:

[0018] 10. Delivery pipeline; 20. Gas storage tank; 30. Control valve; 41. First connecting pipeline; 42. Second connecting pipeline. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0021] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0022] In order to solve the problem in the prior art that a large amount of CO2 is emitted during the emptying process of a long-distance CO2 pipeline, the present invention provides a pipeline transportation device and a gas transportation system.

[0023] like Figure 1 A pipeline transportation device shown includes a transportation pipeline 10 for transporting carbon dioxide, a gas storage tank 20 and a control valve 30, wherein the transportation pipeline 10 is pre-buried underground; the gas storage tank 20 is connected to the transportation pipeline 10 through a connecting pipeline, and the gas in the transportation pipeline 10 is transported to the gas storage tank 20 through the connecting pipeline for temporary storage; the control valve 30 is arranged on the transportation pipeline 10, and controls the opening and closing of the transportation pipeline 10.

[0024] In this embodiment, a gas storage tank 20 is provided, and the gas storage tank 20 is connected to the delivery pipeline 10 for delivering carbon dioxide through a connecting pipeline, so that when there is a fault or maintenance in the upstream and downstream and the delivery pipeline 10 needs to be emptied, the control valve 30 can be opened to temporarily store the carbon dioxide in the gas storage tank 20, so that the delivery pipeline 10 can be emptied and the maintenance of the delivery pipeline 10 can be performed. Since the carbon dioxide is stored in the gas storage tank 20 during the venting, a closed loop is formed, which avoids environmental problems and other adverse effects caused by the external emission of carbon dioxide, and can also avoid the leakage of carbon dioxide, which is helpful for the full process measurement of carbon dioxide. When the pressure of the pipeline is too high, the gas storage tank 20 can also play a buffering effect.

[0025] In this embodiment, there are multiple connecting pipelines, and two connecting pipelines are provided in this embodiment, and the two connecting pipelines are respectively a first connecting pipeline 41 and a second connecting pipeline 42, and both the first connecting pipeline 41 and the second connecting pipeline 42 are connected and communicated with the delivery pipeline 10, and both the first connecting pipeline 41 and the second connecting pipeline 42 are connected and communicated with the gas storage tank 20. In this way, there are two paths from the delivery pipeline 10 to the gas storage tank 20, that is, the delivery pipeline 10 can transport carbon dioxide into the gas storage tank 20 through the first connecting pipeline 41 and the second connecting pipeline 42 respectively. In this way, in actual use, the first connecting pipeline 41 and the second connecting pipeline 42 can be treated separately, that is, one of the first connecting pipeline 41 and the second connecting pipeline 42 is used to transport carbon dioxide in the delivery pipeline 10 to the gas storage tank 20, and the other is used to put carbon dioxide in the gas storage tank 20 back into the delivery pipeline 10, thereby realizing the functional specialization of the pipelines. At the same time, the first connecting pipeline 41 and the second connecting pipeline 42 can also play a role of replacing each other. When one of the first connecting pipeline 41 and the second connecting pipeline 42 fails and cannot be used, the other pipeline can be used to transport carbon dioxide, thereby achieving an alternating and standby effect, ensuring that the pipeline transport device can cope with unexpected situations. Of course, in addition to the above-mentioned function-specific settings, the first connecting pipeline 41 and the second connecting pipeline 42 can also be used for both air intake and exhaust, which is conducive to increasing the speed at which gas enters and exits the gas storage tank 20 and improving the use efficiency.

[0026] In this embodiment, the first connecting line 41 forms a first connection position with the delivery line 10, and the second connecting line 42 forms a second connection position with the delivery line 10. The first connection position and the second connection position are arranged sequentially along the delivery direction of carbon dioxide in the delivery line 10. That is to say, the first connecting line 41 of this embodiment is closer to the starting end of the delivery line 10 than the second connecting line 42. In this way, there is a certain distance between the first connecting line 41 and the second connecting line 42 along the delivery direction, thereby ensuring that carbon dioxide at different positions of the delivery line 10 can quickly enter the gas storage tank 20 through the nearest connecting line, thereby achieving a rapid venting effect.

[0027] Accordingly, the first connecting line 41 and the second connecting line 42 are connected to different positions of the gas storage tank 20, respectively, so that the carbon dioxide in the delivery line 10 can quickly enter different positions in the gas storage tank 20, which also helps to improve the emptying speed. Of course, the specific arrangement and setting position of the first connecting line 41 and the second connecting line 42 can be adjusted as needed, and are not limited to the above-mentioned setting method of this embodiment.

[0028] In the present embodiment, since there are multiple connecting pipelines, multiple control valves 30 are also provided, and the present embodiment preferably provides at least one control valve 30 on each connecting pipeline. Based on the aforementioned setting mode that the connecting pipelines of the present embodiment include the first connecting pipeline 41 and the second connecting pipeline 42, the present embodiment provides control valves 30 on both the first connecting pipeline 41 and the second connecting pipeline 42, so that the first connecting pipeline 41 and the second connecting pipeline 42 can be controlled separately to ensure safe and reliable use.

[0029] Since the delivery pipeline 10 of this embodiment is pre-buried under the ground, the gas storage tank 20 is preferably arranged below the delivery pipeline 10 in this embodiment, so that the gas storage tank 20 is also pre-buried under the ground. In this way, the environment in which the gas storage tank 20 is located meets the storage conditions of carbon dioxide and does not occupy too much ground space, which is conducive to saving space.

[0030] Preferably, the depth of the transport pipeline 10 buried under the ground is greater than or equal to 1.5m. This can ensure that the transport pipeline 10 is completely buried underground to avoid exposure, and can also facilitate maintenance and other operations to meet construction requirements. Of course, the specific pre-buried depth can also be adjusted as needed.

[0031] The gas storage tank 20 of this embodiment has a laterally extending cylindrical structure. More specifically, the gas storage tank 20 of this embodiment adopts a cylindrical structure, and its cylindrical structure is placed horizontally, so that its axis extends laterally, and its axis is roughly parallel to the axis of the delivery pipeline 10, so that the gas storage tank 20 only occupies the lateral space, and the longitudinal space occupies little, and it is ensured that the gas storage tank 20 can have a large space for storing carbon dioxide, and the gas storage tank 20 has a sufficient capacity, so that all carbon dioxide can enter the gas storage tank 20 when it is emptied.

[0032] Optionally, the pipeline delivery device further includes a safety pipeline, which is connected to the gas storage tank 20. The safety pipeline can extend above the ground and communicate with the atmosphere or other equipment. In this way, when the gas storage tank 20 cannot store all the carbon dioxide, the excess carbon dioxide can be discharged through the safety pipeline to avoid safety accidents caused by excessive pressure in the gas storage tank 20. Similarly, in this embodiment, a safety valve for exhaust is also provided on the safety pipeline. The safety valve can be preset with a certain pressure. When the pressure in the gas storage tank 20 is higher than the preset pressure, the safety valve can be opened to achieve the effect of pressure relief and exhaust.

[0033] This embodiment also provides a gas delivery system, including the above-mentioned pipeline delivery device. The gas delivery system may also include components such as a gas generating device, a gas using device, an intermediate transfer device, and an intermediate storage device.

[0034] It should be noted that, the multiple in the above embodiments refers to at least two.

[0035] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0036] 1. Solve the problem of large amount of CO2 emission in the emptying process of CO2 long-distance pipeline in the prior art;

[0037] 2. Form a closed loop to avoid environmental problems and other adverse effects caused by carbon dioxide emissions;

[0038] 3. Avoid carbon dioxide leakage and help measure carbon dioxide throughout the entire process;

[0039] 4. When the pressure in the pipeline is too high, the gas tank can also play a buffering role.

[0040] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline conveying device, characterized in that: include: A delivery pipeline (10) for delivering carbon dioxide, wherein the delivery pipeline (10) is pre-buried underground; A gas storage tank (20), the gas storage tank (20) being connected to the delivery pipeline (10) via a connecting pipeline, and the gas in the delivery pipeline (10) being transported to the gas storage tank (20) via the connecting pipeline for temporary storage; A control valve (30), wherein the control valve (30) is arranged on the delivery pipeline (10) and controls the opening and closing of the delivery pipeline (10).

2. The pipeline conveying device according to claim 1, characterized in that: The connecting pipelines are multiple and include a first connecting pipeline (41) and a second connecting pipeline (42); the first connecting pipeline (41) and the second connecting pipeline (42) are both connected to and communicate with the delivery pipeline (10); and the first connecting pipeline (41) and the second connecting pipeline (42) are both connected to and communicate with the gas storage tank (20).

3. The pipeline conveying device according to claim 2, characterized in that: The first connecting pipeline (41) and the delivery pipeline (10) form a first connection position, and the second connecting pipeline (42) and the delivery pipeline (10) form a second connection position, and along the delivery direction of carbon dioxide in the delivery pipeline (10), the first connection position and the second connection position are arranged in sequence.

4. The pipeline conveying device according to claim 2, characterized in that: There are a plurality of control valves (30), and the first connecting pipeline (41) and the second connecting pipeline (42) are both provided with the control valves (30).

5. The pipeline conveying device according to claim 2, characterized in that: The first communicating pipeline (41) and the second communicating pipeline (42) are respectively connected to and communicated with different positions of the gas storage tank (20).

6. The pipeline conveying device according to claim 1, characterized in that: The gas storage tank (20) is located below the delivery pipeline (10).

7. The pipeline transportation device according to claim 1, characterized in that: The conveying pipeline (10) is pre-buried under the ground to a depth greater than or equal to 1.5 m.

8. The pipeline transportation device according to claim 1, characterized in that: The gas storage tank (20) has a laterally extending cylindrical structure.

9. The pipeline transportation device according to claim 1, characterized in that: The pipeline transportation device also includes a safety pipeline, which is connected to the gas storage tank (20) and is provided with a safety valve for exhausting gas.

10. A gas delivery system, characterized in that: A pipeline transportation device comprising any one of claims 1 to 9.

Images