A reinforced mixing manifold and natural gas gathering system

Abstract

The application discloses a kind of strengthened mixing effect manifold and natural gas gathering and transferring system, it is related to natural gas gathering and transferring equipment technical field;Manifold includes: manifold pipe body, the manifold pipe body is provided with gas flow outlet;Gas source gas inlet pipeline, the gas source gas inlet pipeline is at least provided with two, along the conveying direction of gas in the manifold pipe body, the gas source gas inlet pipeline is separately arranged with the gas flow outlet at the two ends of the manifold pipe body;Rotational flow generator, the rotational flow generator is arranged at the gas outlet end of the gas source gas inlet pipeline, and the gas outlet of the rotational flow generator is located in the manifold pipe body, can strengthen the disturbance of different gas quality in manifold in upstream, make gas quickly mix evenly, ensure that the output natural gas is in the state of gas quality uniform mixing, eliminate the influence of gas quality uneven to purification plant, simultaneously can reduce the number of manifold equipment and shorten mixing distance.Natural gas gathering and transferring system includes the manifold described above.

Description

Technical Field

[0001] This invention relates to the field of natural gas gathering and transmission equipment technology, specifically to a manifold and natural gas gathering and transmission system that enhances the mixing effect. Background Technology

[0002] With increasingly stringent environmental protection requirements, the requirements for total sulfur content in the quality standard for commercial natural gas (GB17820) are becoming more and more stringent (the total sulfur content for Class I gas is now 60 mg / m³). 3 Increased to 20 mg / m 3 For a purification plant to achieve the required quality standards for natural gas containing organic sulfur, it needs a relatively stable feedstock gas quality. However, the organic sulfur content of feedstock gas from wells in different production layers and regions often varies significantly. Feedstock gases of different qualities, especially those containing difficult-to-treat organic sulfur, are naturally mixed through manifolds before entering the purification plant for desulfurization. The uniformity of the feedstock gas mixing has a crucial impact on the purification plant's treatment efficiency and whether the product gas quality meets the standards. Furthermore, unstable gas quality can cause fluctuations in the unit's operation, which in turn can affect upstream gas volume allocation and the normal production of gas wells.

[0003] Existing manifold systems require long mixing times or distances to achieve uniform blending when using multiple gas sources, making rapid short-distance blending impossible. Furthermore, most publicly available natural gas mixers only consider blending natural gas and hydrogen from two sources, typically by introducing a second gas source in the middle of the main pipeline, relying on velocity differences and gas diffusion to achieve blending. This approach cannot meet the requirements for simultaneous blending of multiple gas sources. In addition, the current hydrogen blending ratio in natural gas is generally between 3% and 20%, which is insufficient to meet operating conditions when the inlet flow rates of the blending gas sources are similar. Summary of the Invention

[0004] To address the technical problem that existing manifold devices cannot meet the simultaneous mixing of multiple gas sources, this invention provides a manifold and natural gas gathering and transmission system that enhances the mixing effect. This system can strengthen the disturbance of upstream gases of different qualities in the manifold, enabling the gases to mix quickly and evenly, ensuring that the output natural gas is in a state of uniform mixing, eliminating the impact of uneven gas quality on the purification plant, and at the same time reducing the number of manifold devices and shortening the mixing distance.

[0005] This invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a manifold for enhancing mixing, comprising: a manifold body having an airflow outlet; at least two air source inlet pipes having been provided, which are disposed at opposite ends of the manifold body along the gas transport direction within the manifold body; and a vortex generator disposed at the outlet end of the air source inlet pipe, with the outlet of the vortex generator located within the manifold body.

[0007] The manifold for enhanced mixing provided by this invention includes a manifold body, a gas source inlet pipe, and a cyclone generator. At least two gas source inlet pipes are provided, with the gas source inlet pipe and the gas outlet located at opposite ends of the manifold body. This allows for the simultaneous input of two or more raw material gases into the manifold body, meeting the needs of simultaneous mixing of multiple gas sources. Simultaneously, the cyclone generator is located at the outlet end of the gas source inlet pipe, with its outlet inside the manifold body. This allows each gas source to enter the manifold body in a cyclone manner, enhancing the mixing effect and enabling rapid and uniform mixing of different gas source raw materials, eliminating the impact of gas quality inconsistencies on downstream processing devices.

[0008] Among them, the method of enhancing mixing by swirl can reduce the number of manifold equipment and shorten the mixing distance. It only needs to use the pressure of the natural gas entering the manifold to generate the airflow velocity, without the need for additional power. It has the advantages of simple process, low cost and high reliability.

[0009] Therefore, the enhanced mixing manifold provided by this invention can strengthen the disturbance of upstream gases of different qualities in the manifold, so that the gases can be mixed quickly and evenly, ensuring that the output natural gas is in a state of uniform mixing of quality, eliminating the impact of uneven quality on the purification plant, and at the same time reducing the number of manifold equipment and shortening the mixing distance.

[0010] In an optional embodiment of this application, the swirling generator includes a swirling guide plate, which is spirally arranged along the axial direction of the gas source inlet pipe.

[0011] In an optional embodiment of this application, the swirl generator further includes a baffle body located at the outlet end of the gas source inlet pipe;

[0012] The baffle body is provided with multiple swirling outlets, which are evenly distributed around the circumference of the air source inlet pipe.

[0013] In an optional embodiment of this application, the angle between the opening of the vortex outlet and the axis of the air source inlet pipe is 20° to 35° along the axis of the air source inlet pipe.

[0014] In an optional embodiment of this application, the axial length of the swirl outlet is 0.5 to 1.1 times the diameter of the gas source inlet pipe.

[0015] In an optional embodiment of this application, the deflector is hemispherical, and the angle between the center of the swirl outlet and the center of the sphere of the deflector is less than or equal to 60°.

[0016] In an optional embodiment of this application, the angle of inclination of the swirl guide plate relative to the axial direction of the air source inlet pipe is less than or equal to 30°.

[0017] In an optional embodiment of this application, the output airflow of two adjacent air source inlet pipes has opposite swirling directions, so that the swirling directions generated by the adjacent air source inlet pipes are opposite. This causes strong disturbances in the different air sources of the adjacent air source inlet pipes under the action of the reverse swirling flow, forming turbulent flow that can enhance the mixing effect, thereby further promoting the uniform mixing of gas and gas.

[0018] In an optional embodiment of this application, multiple sets of mixing guide plates are provided inside the manifold. The multiple sets of mixing guide plates are spaced apart along the axial direction of the gas source inlet pipe. The mixing guide plates are mirror-symmetrical about the central axis of the manifold. The mixing guide plates are located between the output end of the gas source inlet pipe and the gas outlet, so that the gas after initial mixing is swirled again inside the manifold through the multiple sets of mixing guide plates, thereby further enhancing the mixing of gas components.

[0019] In an optional embodiment of this application, the included angle between each of the mixing guide plates and the axis of the manifold is 30° to 45°.

[0020] In an optional embodiment of this application, the length of each of the mixing guide plates is 15% to 20% of the diameter of the manifold.

[0021] In an optional embodiment of this application, two adjacent sets of the mixing guide plates are arranged in a mirror-symmetrical manner.

[0022] In an optional embodiment of this application, a plurality of edge flow obstructions are provided on the inner sidewall of the manifold, and each edge flow obstruction is located between two adjacent mixing guide plates, so as to force the mixed airflow to turn by the edge flow obstruction, thereby forming a swirling flow again in the manifold, achieving the purpose of re-mixing, and further improving the uniformity of raw material gas mixing.

[0023] In an optional embodiment of this application, a set of horizontal flow guide plates is provided inside the manifold. The horizontal flow guide plates are arranged parallel to the central axis of the manifold and are located between the output end of the mixing flow guide plate and the airflow outlet, so as to reduce gas disturbance through the horizontal flow guide plates and thereby ensure the flow stability in the airflow outlet pipe.

[0024] Secondly, the present invention provides a natural gas gathering and transmission system, in which a manifold with enhanced mixing effect is provided in the pipeline. This enhances the disturbance of upstream gases of different qualities in the manifold through the manifold body, so that the gases are quickly and evenly mixed, ensuring that the output natural gas is in a state of uniform mixing of quality, eliminating the impact of uneven quality on the purification plant, and reducing the number of manifold equipment.

[0025] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0026] 1. The manifold for enhanced mixing provided by the present invention includes a manifold body, a gas source inlet pipe, and a cyclone generator. At least two gas source inlet pipes are provided, and the gas source inlet pipes and the gas outlet are respectively located at both ends of the manifold body. It can simultaneously input two or more raw material gases into the manifold body, which can meet the needs of multiple gas sources to be mixed at the same time. At the same time, the cyclone generator is located at the outlet end of the gas source inlet pipe, and the outlet of the cyclone generator is located in the manifold body, so that each gas source enters the manifold body in a cyclone manner to enhance the mixing effect, so that the raw material gases from different gas sources are quickly and evenly mixed, and the influence of gas quality inhomogeneity on downstream processing devices is eliminated.

[0027] 2. The manifold with enhanced mixing effect provided by the present invention enhances mixing through swirling flow, which can reduce the number of manifold devices and shorten the mixing distance.

[0028] 3. The manifold with enhanced mixing provided by the present invention only needs to use the pressure of the natural gas inlet manifold itself to generate the airflow velocity, without the need for additional power, and has the advantages of simple process, low cost and high reliability.

[0029] 4. The natural gas gathering and transmission system provided by the present invention has a manifold with the above-mentioned enhanced mixing effect in the pipeline. The manifold body strengthens the disturbance of upstream gases of different qualities in the manifold, so that the gases are quickly and evenly mixed, ensuring that the output natural gas is in a state of uniform mixing of quality, eliminating the impact of uneven quality on downstream purification plants, and reducing the number of manifold equipment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] In the attached diagram:

[0032] Figure 1 This is a schematic diagram of the manifold structure for enhancing the mixing effect according to an embodiment of the present invention;

[0033] Figure 2 This is a side view of the manifold structure for enhancing the mixing effect according to an embodiment of the present invention;

[0034] Figure 3 This is a front view structural diagram of the air source inlet pipe according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the swirl guide plate according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the layout of the mixing guide plate according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the layout of the flow guide plate in an embodiment of the present invention.

[0038] The attached diagram shows the markings and corresponding component names:

[0039] 1-Manifold body, 2-Airflow outlet, 3-Air source inlet pipe, 4-Swirl guide plate, 5-Baffle cover, 6-Swirl outlet, 7-Mixed flow guide plate, 8-Side flow obstruction component, 9-Horizontal flow guide plate. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0042] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0043] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0044] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0045] Example 1

[0046] Combination Figure 1 This embodiment provides a manifold and natural gas gathering and transmission system with enhanced mixing effect, including: a manifold body 1, wherein the manifold body 1 is provided with an airflow outlet 2; a gas source inlet pipe 3, wherein at least two gas source inlet pipes 3 are provided, which are located at opposite ends of the manifold body 1 along the gas transport direction within the manifold body 1; and a vortex generator, wherein the vortex generator is located at the outlet end of the gas source inlet pipe 3, and the outlet of the vortex generator is located within the manifold body 1.

[0047] Specifically, the manifold 1 in this embodiment has an appearance similar to that of a conventional natural gas manifold, and has at least two gas source inlet pipes 3 and corresponding gas outlet pipes 2, and a corresponding turbulence structure is arranged between the gas outlet pipes 2 and the inlet pipes.

[0048] Combination Figures 1-4 The swirling generator includes a swirling guide plate 4, which is spirally arranged along the axial direction of the gas source inlet pipe 3.

[0049] Continue to combine Figure 1 The swirl generator further includes a baffle shroud 5, which is located at the outlet end of the air source inlet pipe 3. The baffle shroud 5 is provided with multiple swirl outlets 6, which are evenly distributed around the circumference of the air source inlet pipe 3. The number of swirl outlets 6 is determined according to specific design requirements. In this embodiment, each baffle shroud 5 is provided with eight swirl outlets 6 to serve as outlets for airflow to enter the manifold 1.

[0050] The baffle is hemispherical, and the angle between the center of each swirl outlet 6 on the spherical surface of the baffle and the center of the sphere is less than or equal to 60°. Along the axis of the air source inlet pipe 3, the angle between the opening of the swirl outlet 6 and the axis of the air source inlet pipe 3 is 20° to 35°. The axial length of the swirl outlet 6 is 0.5 to 1.1 times the diameter of the air source inlet pipe 3.

[0051] In this embodiment, a spiral swirl generator guide plate is provided from the top of the hemispherical cover. The edge of the guide plate does not exceed the cross-section of the air source inlet pipe 3, and the guide plate rotates and tilts counterclockwise around the center line of the air source inlet pipe 3. Specifically, the inclination angle of the swirl guide plate 4 relative to the axial direction of the air source inlet pipe 3 is less than or equal to 30°.

[0052] Preferably, the output airflow of two adjacent air source inlet pipes 3 has opposite swirl directions, that is, the spiral directions of the swirl guide plates 4 in the two adjacent sets of air source inlet pipes 3 are opposite, so that the swirl directions generated by the adjacent air source inlet pipes 3 are opposite, so that the different air sources of the adjacent air source inlet pipes 3 generate strong disturbances under the action of the reverse swirl, forming turbulence that can enhance the mixing effect, thereby further promoting the uniform mixing of gas and gas.

[0053] Recombined Figure 1 Multiple sets of mixing guide plates 7 are provided inside the manifold body 1. The multiple sets of mixing guide plates 7 are arranged at intervals along the axial direction of the gas source inlet pipe 3. The mixing guide plates 7 are arranged as mirror images of the manifold body 1 about the axial direction. The mixing guide plates 7 are located between the output end of the gas source inlet pipe 3 and the gas outlet 2, so that the gas after initial mixing is swirled again inside the manifold body 1 through the multiple sets of mixing guide plates 7, thereby further enhancing the mixing of gas components.

[0054] It is understandable that the mixing flow guide plates 7 are generally provided in two or more sets, with each set of mixing flow guide plates 7 arranged in a mirror-symmetrical manner up and down along the axis of the manifold body 1, and adjacent sets of mixing flow guide plates 7 are arranged in a mirror manner. Combined with Figure 5 Each set of mixing flow guide plates 7 includes 6 to 14 pieces, which are equally spaced.

[0055] In this embodiment, the included angle between each of the mixing guide plates 7 and the axis of the manifold 1 is 30° to 45°, and the length of each of the mixing guide plates 7 is 15% to 20% of the diameter of the manifold 1.

[0056] Meanwhile, the inner wall of the manifold 1 is provided with a plurality of edge flow obstruction elements 8, each of which is located between two adjacent mixing guide plates 7. The edge flow obstruction elements 8 force the mixed airflow to turn, thereby forming a swirling flow again in the manifold 1, achieving the purpose of re-mixing and further improving the uniformity of raw material gas mixing.

[0057] Based on this, combined Figure 1 and Figure 6 The manifold 1 is provided with a plurality of horizontal flow guide plates 9, which are arranged parallel to the manifold 1 (usually at equal intervals). The horizontal flow guide plates 9 are located between the output end of the mixing flow guide plate 7 and the airflow outlet 2, so as to reduce gas disturbance through the horizontal flow guide plates 9, thereby ensuring the flow stability in the airflow outlet 2 pipe.

[0058] In summary, the enhanced mixing manifold provided in this embodiment includes a manifold body 1, a gas source inlet pipe 3, a vortex generator, a mixing guide plate 7, and a horizontal flow guide plate 9. At least two gas source inlet pipes 3 are provided, and the gas source inlet pipes 3 and the airflow outlet 2 are located at opposite ends of the manifold body 1, enabling the simultaneous input of two or more raw material gases into the manifold body 1, thus meeting the requirement for simultaneous mixing of multiple gas sources.

[0059] When the airflow enters the manifold 1 from the air source inlet pipe 3, it comes into contact with the swirl guide plate 4 of the swirl generator after passing through a short straight pipe section. Driven by its own pressure, it forms a counterclockwise rotating airflow along the swirl guide plate 4. Then the airflow continues to move forward and enters the front hemispherical baffle cover. Due to the decrease in cross-sectional area in the flow direction, the gas velocity increases. After the airflow reaches the swirl outlet 6, the velocity and direction of the airflow entering the cavity of the manifold 1 are different because the outlet cross-sectional area and the relative position with the swirl guide plate 4 are different at different positions. At the same time, due to the simultaneous intake of multiple air sources, the mutual disturbance will be further enhanced.

[0060] After initial mixing, the gas enters the first set of mixing guide plates 7. The first set of mixing guide plates 7 enters the secondary mixing zone at an angle of 30° to 45°. When the gas reaches the manifold 1, it is deflected by the side flow obstruction element 8 installed on the side wall of the manifold 1, forming a swirling flow within the manifold 1, achieving the purpose of remixing. After at least one remixing, the gas enters the outlet stabilization zone through the horizontal flow guide plate 9 at the end of the manifold 1 to reduce gas disturbance and ensure stable flow within the gas outlet 2 pipe. The mixed gas then flows out from the gas outlet 2.

[0061] Among them, the method of enhancing mixing by swirl can reduce the number of manifold equipment and shorten the mixing distance. Moreover, it only needs to use the pressure of the natural gas inlet manifold 1 to generate the gas flow velocity, without the need for additional power. It has the advantages of simple process, low cost and high reliability.

[0062] In summary, the enhanced mixing manifold provided in this embodiment can strengthen the disturbance of upstream gases of different qualities in the manifold, enabling the gases to mix quickly and evenly, ensuring that the output natural gas is in a state of uniform mixing, eliminating the impact of gas unevenness on the purification plant, and at the same time reducing the number of manifold equipment and shortening the mixing distance.

[0063] Example 2

[0064] This embodiment provides a natural gas gathering and transmission system, in which a manifold with enhanced mixing effect as described in Embodiment 1 is installed in the pipeline. This enhances the disturbance of upstream gases of different qualities within the manifold body 1, enabling rapid and uniform mixing of the gases. This ensures that the output natural gas is in a state of uniform mixing, eliminating the impact of gas unevenness on the purification plant, while simultaneously reducing the number of manifold devices.

[0065] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A manifold for enhancing mixing effect, characterized in that, include: Manifold body (1), wherein the manifold body (1) is provided with an airflow outlet (2); At least two gas source inlet pipes (3) are provided, which are connected to the manifold body (1) in a direction perpendicular to the manifold body (1). The gas source inlet pipes (3) and the airflow outlet (2) are respectively located at both ends of the manifold body (1). A vortex generator is provided at the outlet end of the gas source inlet pipe (3), and the outlet of the vortex generator is located inside the manifold body (1).

2. The manifold for enhancing mixing effect according to claim 1, characterized in that, The swirling generator includes a swirling guide plate (4), which is spirally arranged along the axial direction of the gas source inlet pipe (3).

3. The manifold for enhancing mixing according to claim 2, characterized in that, The vortex generator also includes a baffle (5), which is located at the outlet end of the gas source inlet pipe (3); The baffle body (5) is provided with multiple swirling outlets (6), and the multiple swirling outlets (6) are evenly distributed around the circumference of the air source inlet pipe (3).

4. The manifold for enhancing mixing according to claim 3, characterized in that, Along the axis of the air source inlet pipe (3), the opening of the vortex outlet (6) is at an angle of 20° to 35° with the axis of the air source inlet pipe (3).

5. The manifold for enhancing mixing according to claim 3, characterized in that, The axial length of the swirl outlet (6) is 0.5 to 1.1 times the diameter of the air source inlet pipe (3).

6. The manifold for enhancing mixing according to claim 3, characterized in that, The deflector is hemispherical, and the angle between each of the swirl outlets (6) and the center of the sphere on the surface of the deflector is less than or equal to 60°.

7. The manifold for enhancing mixing according to claim 2, characterized in that, The swirl guide plate (4) has an inclination angle of less than or equal to 30° relative to the axial direction of the air source inlet pipe (3).

8. The manifold for enhancing the mixing effect according to any one of claims 2 to 7, characterized in that, The airflow output from the two adjacent air source inlet pipes (3) has opposite directions.

9. The manifold for enhancing mixing according to claim 1, characterized in that, Multiple sets of mixing guide plates (7) are provided inside the manifold (1). The multiple sets of mixing guide plates (7) are arranged at intervals along the axial direction of the gas source inlet pipe (3). The mixing guide plates (7) are arranged in a mirror symmetrical manner about the central axis of the manifold (1). The mixing guide plates (7) are located between the output end of the gas source inlet pipe (3) and the airflow outlet (2).

10. The manifold for enhancing mixing according to claim 9, characterized in that, The included angle between the axis of each of the mixing guide plates (7) and the axis of the manifold (1) is 30° to 45°.

11. The manifold for enhancing mixing according to claim 9, characterized in that, The length of each of the mixing guide plates (7) is 15% to 20% of the diameter of the manifold body (1).

12. The manifold for enhancing mixing according to claim 9, characterized in that, The two adjacent sets of mixing guide plates (7) are mirror images of each other.

13. The manifold for enhancing mixing according to any one of claims 9 to 12, characterized in that, The inner wall of the manifold (1) is provided with a plurality of side flow obstruction elements (8), and each side flow obstruction element (8) is located between two adjacent mixing guide plates (7).

14. The manifold for enhancing mixing according to claim 13, characterized in that, The manifold body (1) is provided with a plurality of horizontal flow guide plates (9), which are arranged parallel to the manifold body (1) and are located between the output end of the mixing flow guide plate (7) and the airflow outlet (2).

15. A natural gas gathering and transmission system, characterized in that, The pipeline is provided with a manifold for enhancing the mixing effect as described in any one of claims 1 to 14.

Images