Natural gas pressurization gathering and transportation system

Abstract

The utility model discloses a natural gas pressurization gathering and transportation system which comprises a gas inlet and a gas inlet separation tank. The air inlet separation tank is communicated with the gathering and transportation first-stage cylinder air inlet buffer tank, the gathering and transportation first-stage cylinder air inlet buffer tank is communicated with the gathering and transportation first-stage cylinder, the gathering and transportation first-stage cylinder is communicated with the gathering and transportation first-stage cylinder exhaust buffer tank, the gathering and transportation first-stage cylinder exhaust buffer tank is communicated with the gathering and transportation first-stage air cooler, and the gathering and transportation first-stage air cooler is communicated with the gathering and transportation second-stage air cooler. The gathering and transportation first-stage air cooler is communicated with the gathering and transportation second-stage air inlet separation tank, the gathering and transportation second-stage air inlet separation tank is communicated with the gathering and transportation second-stage cylinder air inlet buffer tank, the gathering and transportation second-stage cylinder air inlet buffer tank is communicated with the gathering and transportation second-stage cylinder, and the gathering and transportation second-stage cylinder is communicated with the gathering and transportation second-stage cylinder exhaust buffer tank. And the gathering and transportation secondary cylinder exhaust buffer tank is communicated with the gathering and transportation secondary air cooler. Through the design of efficient compression, pretreatment, flexible adjustment and safety and reliability, efficient gathering and transportation and stable operation of gas are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas compression, in particular to a natural gas pressurized gathering and transportation system. Background Art

[0002] my country's economic structure and energy structure are both in a critical period of transformation. New clean energy industries such as natural gas, shale gas, and coalbed methane are facing huge development opportunities. In the process of natural gas exploitation in oil and gas wells, when the exhaust pressure of the gas well itself is lower than the external transmission pressure, the gas needs to be pressurized to reach the external transmission pressure and then transmitted. This is called pressurized gathering and transmission.

[0003] In the natural gas compression process, traditional gathering and transportation systems usually use single-stage compression. Although this method is simple, it often has problems such as low compression efficiency, high energy consumption, and high operating costs when facing the needs of high-pressure and large-flow gas gathering and transportation. In addition, with the continuous expansion of the natural gas market, different customers have increasingly diversified requirements for gas pressure, flow and other parameters, which requires the gathering and transportation system to have higher flexibility and adjustability.

[0004] At present, although some multi-stage compression gathering and transportation systems have been proposed, these systems often ignore the flexibility and reliability of the system while achieving efficient compression. For example, some systems are complicated to operate when adjusting the gas flow direction and exhaust volume, and it is difficult to ensure the stable operation of the system. Therefore, the development of a natural gas boosting gathering and transportation system that can achieve efficient compression and has high flexibility and reliability has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of the present invention is to provide a natural gas pressurization gathering and transportation system to solve the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The application provides a natural gas booster gathering and transportation system, including an air inlet, an air inlet separation tank, a gathering and transportation first-stage cylinder air inlet buffer tank, a gathering and transportation first-stage cylinder, a gathering and transportation first-stage cylinder exhaust buffer tank, a gathering and transportation first-stage air cooler, a gathering and transportation second-stage air inlet separation tank, a gathering and transportation second-stage cylinder air inlet buffer tank, a gathering and transportation second-stage cylinder, a gathering and transportation second-stage cylinder exhaust buffer tank, a gathering and transportation second-stage air cooler, an exhaust port, and a gathering and transportation main exhaust pipe; wherein,

[0008] The gas enters the system from the air inlet and enters the air inlet separation tank through the main air inlet pipe. The first outlet of the air inlet separation tank is connected to the inlet of the first-stage collecting and transporting cylinder air inlet buffer tank through the collecting and transporting air inlet pipe. The outlet of the first-stage collecting and transporting cylinder air inlet buffer tank is connected to the inlet of the first-stage collecting and transporting cylinder. The outlet of the first-stage collecting and transporting cylinder air inlet buffer tank is connected to the inlet of the first-stage collecting and transporting cylinder exhaust buffer tank. The outlet of the first-stage collecting and transporting cylinder exhaust buffer tank is connected to the inlet of the first-stage collecting and transporting air cooler. The outlet of the first-stage collecting and transporting air cooler is connected to the inlet of the second-stage collecting and transporting air inlet separation tank. The outlet of the second-stage collecting and transporting air inlet separation tank is connected to the first inlet of the second-stage collecting and transporting cylinder air inlet buffer tank. The outlet of the second-stage collecting and transporting cylinder air inlet buffer tank is connected to the inlet of the second-stage collecting and transporting cylinder. The outlet of the second-stage collecting and transporting cylinder exhaust buffer tank is connected to the inlet of the second-stage collecting and transporting cylinder exhaust buffer tank. The outlet of the second-stage collecting and transporting cylinder exhaust buffer tank is connected to the inlet of the second-stage collecting and transporting air cooler. After being cooled by the second-stage collecting and transporting air cooler, the gas enters the collecting and transporting main exhaust pipe and is then connected to the customer's collecting and transporting external pipeline through the exhaust port.

[0009] Furthermore, the second outlet of the air intake separation tank is communicated with the second inlet of the air intake buffer tank of the gathering and transporting second-stage cylinder through a dual-stage auxiliary air intake pipeline.

[0010] Furthermore, an auxiliary exhaust pipeline for double primary stage is provided on the outlet pipeline of the gathering and transportation two-stage air intake separation tank, and the auxiliary exhaust pipeline for double primary stage is connected to the gathering and transportation main exhaust pipe.

[0011] Furthermore, a gathering bypass pipe is provided on the gathering and transportation main exhaust pipe for unloading the gathering and transportation pipeline, and the gathering bypass pipe is connected to the main air intake pipe.

[0012] Furthermore, the gathering and transportation bypass pipe is provided with a gathering and transportation bypass electrical proportional valve and a gathering and transportation bypass manual ball valve, and the gathering and transportation bypass electrical proportional valve and the gathering and transportation bypass manual ball valve are arranged on the gathering and transportation bypass pipe in parallel to facilitate the adjustment of the gathering and transportation exhaust gas volume.

[0013] Furthermore, a first plate valve is provided on the dual-stage auxiliary exhaust pipeline, a second plate valve is provided on the first inlet pipeline of the secondary cylinder air intake buffer tank, and a third plate valve is provided on the second inlet pipeline of the secondary cylinder air intake buffer tank.

[0014] Furthermore, the first plate valve, the second plate valve and the third plate valve are all 8-shaped plate valves.

[0015] Beneficial effects achieved by the utility model:

[0016] (1) The natural gas booster gathering and transportation system provided by the utility model realizes efficient compression and gathering of gas through a two-stage compression gathering and transportation system. Through the continuous operation of the first-stage gathering and transportation cylinder and the second-stage gathering and transportation cylinder, the gas can reach the external transmission pressure through two-stage compression, thereby meeting the needs of different customers. This efficient compression method not only improves the gas gathering and transportation efficiency, but also helps to reduce energy consumption and operating costs. Through efficient compression, pretreatment, flexible adjustment and safe and reliable design, efficient gas gathering and transportation and stable operation are achieved, providing customers with high-quality services.

[0017] (2) The natural gas booster collection and transportation system provided by the utility model takes into account the flexibility and adjustability of the system. By setting up auxiliary air intake pipelines and auxiliary exhaust pipelines for double-stage, as well as collection and transportation bypass pipes and other structures, the system can flexibly adjust the gas flow direction and exhaust volume according to actual needs. The system meets the requirements of double-stage compression and collection of gas, that is, the gas can reach the external transmission pressure after only one-stage compression, forming double-stage compression, thereby increasing the collection and transportation volume and improving the working efficiency of the compressor. This design not only improves the adaptability of the system, but also can cope with the operation requirements under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a process flow chart of an embodiment of the utility model;

[0019] Reference numerals:

[0020] 1. Air inlet; 2. Air inlet ball valve; 3. Air inlet separation tank; 4. Gathering and transporting first-stage cylinder air inlet buffer tank; 5. Gathering and transporting first-stage cylinder; 6. Gathering and transporting first-stage cylinder exhaust buffer tank; 7. Gathering and transporting first-stage air cooler; 8. Gathering and transporting second-stage air inlet separation tank; 9. Gathering and transporting second-stage cylinder air inlet buffer tank; 10. Gathering and transporting second-stage cylinder; 11. Gathering and transporting second-stage cylinder exhaust buffer tank; 12. Gathering and transporting second-stage air cooler; 13. Gathering and transporting total exhaust check valve; 14. Gathering and transporting total exhaust manual ball valve; 15. Exhaust port; 16. Gathering and transporting bypass electrical proportional valve; 17. Gathering and transporting bypass manual ball valve; 18. Total air inlet pipe; 19. Gathering and transporting air inlet pipe; 20. Auxiliary exhaust pipeline for double first stage; 21. Gathering and transporting total exhaust pipe; 22. Auxiliary air inlet pipeline for double first stage; 23. Gathering and transporting bypass pipe; 24. First plate valve; 25. Second plate valve; 26. Third plate valve.

[0021] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0023] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0024] Embodiment 1:

[0025] like Figure 1 As shown, when the gas needs to be compressed and collected in one or two stages, that is, the gas is compressed in two stages to reach the external transmission pressure; it includes an air inlet 1, an air inlet separation tank 3, a first-stage collecting cylinder air inlet buffer tank 4, a first-stage collecting cylinder 5, a first-stage collecting cylinder exhaust buffer tank 6, a first-stage collecting air cooler 7, a second-stage collecting air inlet separation tank 8, a second-stage collecting cylinder air inlet buffer tank 9, a second-stage collecting cylinder 10, a second-stage collecting cylinder exhaust buffer tank 11, a second-stage collecting air cooler 12, and a collecting main exhaust pipe 21; the gas enters the system from the air inlet 1, enters the air inlet separation tank 3 through the main air inlet pipe 18, the first outlet of the air inlet separation tank 3 is connected to the inlet of the first-stage collecting cylinder air inlet buffer tank 4 through the collecting air inlet pipe 19, the outlet of the first-stage collecting cylinder air inlet buffer tank 4 is connected to the inlet of the first-stage collecting cylinder 5, and the first-stage collecting cylinder The outlet of 5 is communicated with the inlet of the gathering and transporting first-stage cylinder exhaust buffer tank 6, the outlet of the gathering and transporting first-stage cylinder exhaust buffer tank 6 is communicated with the inlet of the gathering and transporting first-stage air cooler 7, the outlet of the gathering and transporting first-stage air cooler 7 is communicated with the inlet of the gathering and transporting second-stage air intake separation tank 8, the outlet of the gathering and transporting second-stage air intake separation tank 8 is communicated with the first inlet of the gathering and transporting second-stage cylinder air intake buffer tank 9, the outlet of the gathering and transporting second-stage cylinder air intake buffer tank 9 is communicated with the inlet of the gathering and transporting second-stage cylinder 10, the outlet of the gathering and transporting second-stage cylinder 10 is communicated with the inlet of the gathering and transporting second-stage cylinder exhaust buffer tank 11, the outlet of the gathering and transporting second-stage cylinder exhaust buffer tank 11 is communicated with the inlet of the gathering and transporting second-stage air cooler 12, the gas enters the gathering and transporting main exhaust pipe 21 after being cooled by the gathering and transporting second-stage air cooler 12, and then is connected to the customer's gathering and transporting external transmission pipeline through the exhaust port 15.

[0026] In a specific embodiment, an air intake ball valve 2 is provided on the main air intake pipe 18 .

[0027] In a specific embodiment, the collecting and transporting exhaust pipe 21 is provided with a collecting and transporting exhaust check valve 13 and a collecting and transporting exhaust manual ball valve 14 .

[0028] In a specific embodiment, a collecting bypass pipe 23 is provided on the collecting and transporting main exhaust pipe 21 for unloading the collecting and transporting pipeline, and the collecting bypass pipe 23 is connected to the main intake pipe 18 .

[0029] In a specific embodiment, a collecting bypass electrical proportional valve 16 and a collecting bypass manual ball valve 17 are provided on the collecting bypass pipe 23. The collecting bypass electrical proportional valve 16 and the collecting bypass manual ball valve 17 are arranged in parallel on the collecting bypass pipe 23 to facilitate the adjustment of the collecting exhaust gas volume.

[0030] When performing first and second stage compression and gathering, close the first plate valve 24 and the third plate valve 26, open the second plate valve 25, and the gas flow direction is: air inlet 1→intake ball valve 2→main air inlet pipe 18→gathering and transporting first stage air inlet separation tank 3→gathering and transporting air inlet pipe 19→gathering and transporting first stage cylinder air inlet buffer tank 4→gathering and transporting first stage cylinder 5→gathering and transporting first stage cylinder exhaust buffer tank 6→gathering and transporting first stage air cooler 7→gathering and transporting second stage air inlet separation tank 8→gathering and transporting second stage cylinder air inlet buffer tank 9→gathering and transporting second stage cylinder 10→gathering and transporting second stage cylinder exhaust buffer tank 11→gathering and transporting second stage air cooler 12→gathering and transporting main exhaust pipe 21→gathering and transporting total exhaust one-way valve 13→gathering and transporting total exhaust manual ball valve 14→exhaust port 15.

[0031] Embodiment 2:

[0032] like Figure 1 As shown, when the gas needs to be compressed and transported in double stages, that is, the gas can reach the external transmission pressure after only one stage of compression, forming double stage compression, thereby increasing the amount of gas collected and transported and improving the working efficiency of the compressor; it includes an air inlet 1, an air intake separation tank 3, a first-stage collecting and transporting cylinder air intake buffer tank 4, a first-stage collecting and transporting cylinder 5, a first-stage collecting and transporting cylinder exhaust buffer tank 6, a first-stage collecting and transporting air cooler 7, a second-stage collecting and transporting air intake separation tank 8, a second-stage collecting and transporting cylinder air intake buffer tank 9, a second-stage collecting and transporting cylinder 10, a second-stage collecting and transporting cylinder exhaust buffer tank 11, a second-stage collecting and transporting air cooler 12, and a collecting and transporting total exhaust pipe 21;

[0033] The gas enters the system from the air inlet 1, and enters the air inlet separation tank 3 through the main air inlet pipe 18. The first outlet of the air inlet separation tank 3 is connected to the inlet of the first-stage collecting cylinder air inlet buffer tank 4 through the collecting air inlet pipe 19. The outlet of the first-stage collecting cylinder air inlet buffer tank 4 is connected to the inlet of the first-stage collecting cylinder 5. The outlet of the first-stage collecting cylinder 5 is connected to the inlet of the first-stage collecting cylinder exhaust buffer tank 6. The outlet of the first-stage collecting cylinder exhaust buffer tank 6 is connected to the inlet of the first-stage collecting air cooler 7. The outlet of the first-stage collecting air cooler 7 is connected to the inlet of the second-stage collecting air inlet separation tank 8. The gas is discharged from the outlet of the second-stage collecting air inlet separation tank 8, flows to the collecting main exhaust pipe 21 through the dual-stage auxiliary exhaust pipeline 20, and then connects to the customer's collecting and external transmission pipeline through the collecting main exhaust port 15.

[0034] The second outlet of the air intake separation tank 3 is connected to the inlet of the gathering and transmission secondary cylinder air intake buffer tank 9 through the dual-stage auxiliary air intake pipeline 22, the outlet of the gathering and transmission secondary cylinder air intake buffer tank 9 is connected to the inlet of the gathering and transmission secondary cylinder 10, the outlet of the gathering and transmission secondary cylinder 10 is connected to the inlet of the gathering and transmission secondary cylinder exhaust buffer tank 11, the outlet of the gathering and transmission secondary cylinder exhaust buffer tank 11 is connected to the inlet of the gathering and transmission secondary air cooler 12, the gas enters the gathering and transmission main exhaust pipe 21 after being cooled by the gathering and transmission secondary air cooler 12, and then is connected to the customer's gathering and transmission external transmission pipeline through the gathering and transmission main exhaust port 15.

[0035] In a specific embodiment, an air intake ball valve 2 is provided on the main air intake pipe 18 .

[0036] In a specific embodiment, the collecting and transporting exhaust pipe 21 is provided with a collecting and transporting exhaust check valve 13 and a collecting and transporting exhaust manual ball valve 14 .

[0037] In a specific embodiment, a collecting bypass pipe 23 is provided on the collecting and transporting main exhaust pipe 21 for unloading the collecting and transporting pipeline, and the collecting bypass pipe 23 is connected to the main intake pipe 18 .

[0038] In a specific embodiment, a collecting bypass electrical proportional valve 16 and a collecting bypass manual ball valve 17 are provided on the collecting bypass pipe 23. The collecting bypass electrical proportional valve 16 and the collecting bypass manual ball valve 17 are arranged in parallel on the collecting bypass pipe 23 to facilitate the adjustment of the collecting exhaust gas volume.

[0039] When performing double-stage compression and gathering, close the second plate valve 25, open the first plate valve 24 and the third plate valve 26, and the gas flows in the following direction:

[0040] Gas one path: air inlet 1→intake ball valve 2→main air inlet pipe 18→gathering and transporting first-stage air inlet separation tank 3→gathering and transporting air inlet pipe 19→gathering and transporting first-stage cylinder air inlet buffer tank 4→gathering and transporting first-stage cylinder 5→gathering and transporting first-stage cylinder exhaust buffer tank 6→gathering and transporting first-stage air cooler 7→gathering and transporting second-stage air inlet separation tank 8→first plate valve 24→double first-stage auxiliary exhaust pipeline 20→gathering and transporting main exhaust pipe 21→gathering and transporting main exhaust check valve 13→gathering and transporting main exhaust manual ball valve 14→exhaust port 15;

[0041] Another gas route: air inlet 1→intake ball valve 2→main air inlet pipe 18→gathering and transporting first-stage air inlet separation tank 3→double-stage auxiliary air inlet pipeline 22→third plate valve 26→gathering and transporting second-stage cylinder air inlet buffer tank 9→gathering and transporting second-stage cylinder 10→gathering and transporting second-stage cylinder exhaust buffer tank 11→gathering and transporting second-stage air cooler 12→gathering and transporting main exhaust pipe 21→gathering and transporting main exhaust check valve 13→gathering and transporting main exhaust manual ball valve 14→exhaust port 15.

[0042] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A natural gas pressurized gathering and transportation system, characterized in that: It comprises an air inlet (1), an air inlet separation tank (3), a first-stage collecting and transporting cylinder air inlet buffer tank (4), a first-stage collecting and transporting cylinder (5), a first-stage collecting and transporting cylinder exhaust buffer tank (6), a first-stage collecting and transporting air cooler (7), a second-stage collecting and transporting air inlet separation tank (8), a second-stage collecting and transporting cylinder air inlet buffer tank (9), a second-stage collecting and transporting cylinder (10), a second-stage collecting and transporting cylinder exhaust buffer tank (11), a second-stage collecting and transporting air cooler (12), an exhaust port (15), and a collecting and transporting main exhaust pipe (21); wherein: Gas enters the system from the air inlet (1) and enters the air inlet separation tank (3) through the main air inlet pipe (18). The first outlet of the air inlet separation tank (3) is connected to the inlet of the air inlet buffer tank (4) of the first-stage collecting and transporting cylinder through the air inlet pipe (19). The outlet of the air inlet buffer tank (4) of the first-stage collecting and transporting cylinder is connected to the inlet of the first-stage collecting and transporting cylinder (5). The outlet of the first-stage collecting and transporting cylinder (5) is connected to the inlet of the first-stage collecting and transporting cylinder exhaust buffer tank (6). The outlet of the first-stage collecting and transporting cylinder exhaust buffer tank (6) is connected to the inlet of the first-stage collecting and transporting air cooler (7). The outlet of the first-stage collecting and transporting air cooler (7) is connected to the second-stage collecting and transporting air inlet separation tank. The inlet of the collecting and transporting secondary air intake separation tank (8) is connected, the outlet of the collecting and transporting secondary cylinder air intake buffer tank (9) is connected, the outlet of the collecting and transporting secondary cylinder air intake buffer tank (9) is connected to the inlet of the collecting and transporting secondary cylinder (10), the outlet of the collecting and transporting secondary cylinder (10) is connected to the inlet of the collecting and transporting secondary cylinder exhaust buffer tank (11), the outlet of the collecting and transporting secondary cylinder exhaust buffer tank (11) is connected to the inlet of the collecting and transporting secondary air cooler (12), the gas is cooled by the collecting and transporting secondary air cooler (12) and then enters the collecting and transporting main exhaust pipe (21), and then is connected to the customer's collecting and transporting external transmission pipeline through the exhaust port (15).

2. A natural gas pressurized gathering and transportation system according to claim 1, characterized in that: The second outlet of the air intake separation tank (3) is communicated with the second inlet of the air intake buffer tank (9) of the collecting and transporting second-stage cylinder via a dual-stage auxiliary air intake pipeline (22).

3. A natural gas pressurized gathering and transportation system according to claim 1, characterized in that: The outlet pipeline of the gathering and transporting two-stage air inlet separation tank (8) is provided with a dual-stage auxiliary exhaust pipeline (20), and the dual-stage auxiliary exhaust pipeline (20) is connected to the gathering and transporting main exhaust pipe (21).

4. A natural gas pressurized gathering and transportation system according to claim 1, characterized in that: The collecting and transporting main exhaust pipe (21) is provided with a collecting and transporting bypass pipe (23) for unloading the collecting and transporting pipeline, and the collecting and transporting bypass pipe (23) is connected to the main air intake pipe (18).

5. A natural gas pressurized gathering and transportation system according to claim 4, characterized in that: The collecting and transporting bypass pipe (23) is provided with a collecting and transporting bypass electrical proportional valve (16) and a collecting and transporting bypass manual ball valve (17). The collecting and transporting bypass electrical proportional valve (16) and the collecting and transporting bypass manual ball valve (17) are arranged on the collecting and transporting bypass pipe (23) in parallel so as to adjust the collecting and transporting exhaust gas volume.

6. A natural gas pressurized gathering and transportation system according to claim 3, characterized in that: The dual-stage auxiliary exhaust pipeline (20) is provided with a first plate valve (24), the first inlet pipeline of the collecting and transporting second-stage cylinder intake buffer tank (9) is provided with a second plate valve (25), and the second inlet pipeline of the collecting and transporting second-stage cylinder intake buffer tank (9) is provided with a third plate valve (26).

7. A natural gas pressurized gathering and transportation system according to claim 6, characterized in that: The first plate valve (24), the second plate valve (25) and the third plate valve (26) are all 8-shaped plate valves.

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