A shale gas wellhead desander cyclone flow splitting and guiding device

Abstract

The utility model relates to the technical field of shale gas exploitation discloses a shale gas wellhead sand remover cyclone flow splitter flow guide device, include: main pipeline for bearing assembly, split flow subassembly arranges in one side of main pipeline, including setting in one side of main pipeline split flow pipeline, and split flow pipeline is connected with cyclone subassembly, wherein cyclone subassembly includes the cyclone pipeline of arrangement in one end of split flow pipeline, discharge assembly arranges in the bottom of cyclone pipeline, including setting in the cyclone pipeline bottom guide plate still includes setting in the cyclone pipeline bottom discharge pipe, exhaust assembly arranges in the top of cyclone pipeline, including setting in the cyclone pipeline top gas outlet pipe still includes the support rod of rotation connection in the top of cyclone pipeline, the water pipe of gas outlet pipe can be connected, flushes inside when shutting down, reduces the risk of sand grain residual blockage, maintains device stability, and the closed loop of cleaning function and separation, discharge design forms, further guarantees sand removal efficiency and device service life.

Description

Technical Field

[0001] This utility model relates to the field of shale gas extraction technology, specifically to a shale gas wellhead desander cyclone diverter and guide device. Background Technology

[0002] In shale gas extraction operations, the shale gas produced at the wellhead is usually mixed with a large amount of solid impurities such as formation sand and rock fragments. These impurities are hard and have uneven particles. When they flow at high speed with the gas flow, they will cause strong scouring and wear on the inner wall of the subsequent extraction equipment.

[0003] Cyclone desanding technology utilizes the centrifugal force generated by fluid rotation to move solid impurities with a density greater than that of gas towards the cyclone cavity wall, ultimately achieving gas-solid separation. However, existing cyclone desanding devices at shale gas wellheads still have many shortcomings in practical applications: traditional cyclone desanding devices are mostly single-stage, single-channel structures with limited processing flow. When shale gas production fluctuates significantly, uneven flow distribution can easily occur, leading to overload of some cyclone channels and decreased separation efficiency, failing to meet the desanding requirements of high-yield shale gas extraction. In addition, the exhaust channel lacks a targeted filtration and maintenance structure, allowing some unseparated micro-impurities to be discharged with the gas, and the exhaust channel is prone to scale buildup after long-term use, making cleaning and maintenance inconvenient. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cyclone diverter and flow guide device for a shale gas wellhead desander.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a shale gas wellhead desander cyclone diversion and guiding device, comprising: a main pipe for supporting components; a diversion component arranged on one side of the main pipe, including a diversion pipe arranged on one side of the main pipe, and the diversion pipe being connected to the cyclone component, wherein the cyclone component includes a cyclone pipe arranged at one end of the diversion pipe; a discharge component arranged at the bottom of the cyclone pipe, including a guide plate arranged at the bottom of the cyclone pipe, and a discharge pipe arranged at the bottom of the cyclone pipe; and an exhaust component arranged at the top of the cyclone pipe, including an exhaust pipe arranged at the top of the cyclone pipe, and a support rod rotatably connected to the top of the cyclone pipe.

[0006] As a further description of the above technical solution:

[0007] The diversion assembly includes: a valve, which is arranged on the diversion pipe.

[0008] As a further description of the above technical solution:

[0009] The swirl assembly includes: an air inlet located at the top of the swirl pipe and connected to a diversion pipe; and a spiral guide arranged inside the swirl pipe.

[0010] As a further description of the above technical solution:

[0011] The discharge assembly includes: valve two, which is arranged on the discharge pipe; and a main discharge pipe, which is arranged on one side of the discharge pipe.

[0012] As a further description of the above technical solution:

[0013] The exhaust assembly includes: a filter plate arranged on one side of the support rod; and a positioning bolt threaded onto the exhaust pipe.

[0014] As a further description of the above technical solution:

[0015] Four sets of vortex pipes are installed on one side of the main pipeline.

[0016] As a further description of the above technical solution:

[0017] The upper end of the swirl pipe is cylindrical, and the bottom is a truncated cone with a gradually decreasing cavity diameter.

[0018] This utility model has the following beneficial effects:

[0019] The spiral guide guides the sand-bearing shale gas to form a high-speed vortex. The truncated conical structure at the lower end of the vortex pipe enhances the centrifugal force and efficiently promotes the sedimentation of sand particles. After the fine sand particles are intercepted twice by the filter plate, the gas purity is significantly improved, which can prevent sand particles from abrading subsequent equipment. The gas outlet pipe can be connected to a water pipe. When the machine is stopped, clean water is introduced to flush the inside, reducing the risk of sand particles remaining and clogging, and maintaining the stable performance of the device.

[0020] The parallel operation of four sets of cyclone pipes significantly increases the throughput. Valves one and two precisely control the diversion flow rate and discharge timing to adapt to different working conditions. Sand particles are guided by the guide plate into the main discharge pipe for centralized discharge, simplifying the subsequent processing flow. The cleaning function, separation, and discharge design form a closed loop, further ensuring sand removal efficiency and the service life of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the exhaust assembly of this utility model;

[0023] Figure 3 This is a schematic diagram of the swirl assembly of this utility model.

[0024] Legend:

[0025] 1. Main pipe; 2. Diversion pipe; 3. Valve 1; 4. Swirl pipe; 5. Air inlet; 6. Spiral guide; 7. Guide plate; 8. Discharge pipe; 9. Valve 2; 10. Main discharge pipe; 11. Air outlet pipe; 12. Support rod; 13. Filter plate; 14. Positioning bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example 1

[0030] like Figures 1 to 3As shown in the figure, this embodiment provides a shale gas wellhead desander cyclone diversion and guiding device, including: a main pipe 1 for supporting the assembly; a diversion assembly arranged on one side of the main pipe 1, including a diversion pipe 2 arranged on one side of the main pipe 1, and the diversion pipe 2 is connected to the cyclone assembly, wherein the cyclone assembly includes a cyclone pipe 4 arranged at one end of the diversion pipe 2; a discharge assembly arranged at the bottom of the cyclone pipe 4, including a guide plate 7 arranged at the bottom of the cyclone pipe 4, and a discharge pipe 8 arranged at the bottom of the cyclone pipe 4; and an exhaust assembly arranged at the top of the cyclone pipe 4, including an exhaust pipe 11 arranged at the top of the cyclone pipe 4, and a support rod 12 rotatably connected to the top of the cyclone pipe 4.

[0031] Understandable, Figure 1 The diagram only schematically illustrates some of the components included in the diversion and flow guiding device. The actual shape, size, location, and construction of these components are not subject to change. Figure 1 Due to limitations, the diversion and guiding device can also include, compared to Figure 1 More or fewer parts.

[0032] In addition, in this embodiment, the main pipeline 1 transports sand-containing shale gas, the diversion component introduces part of the gas flow into the vortex pipeline 4, the vortex effect causes the sand particles to settle, the discharge component discharges the sand particles, and the exhaust component discharges purified gas, thus achieving preliminary separation of gas and sand and providing a foundation for subsequent sand removal.

[0033] Specifically, the diversion assembly includes: valve 3, which is arranged on the diversion pipe 2.

[0034] In this embodiment, the flow rate of shale gas flowing into the vortex pipe 4 is controlled by opening and closing valve 3 and adjusting the opening degree, so as to achieve precise control of the diversion flow rate and adapt to different working conditions.

[0035] Specifically, the swirl assembly includes: an air inlet 5, which is located at the top of the swirl pipe 4 and connected to the diversion pipe 2; and a spiral guide 6, which is arranged inside the swirl pipe 4.

[0036] As a preferred implementation method, shale gas enters the swirl pipe 4 tangentially through the inlet 5, and forms a high-speed swirl under the guidance of the spiral guide 6. Centrifugal force is used to make sand particles move towards the inner wall of the pipe, thereby enhancing the gas-sand separation efficiency and increasing the sand particle settling speed.

[0037] Example 2

[0038] Specifically, the discharge assembly includes: valve 2 9, which is arranged on the discharge pipe 8; and main discharge pipe 10, which is arranged on one side of the discharge pipe 8.

[0039] In this embodiment, the settled sand particles are guided into the discharge pipe 8 by the guide plate 7, and the valve 2 9 controls the timing of sand particle discharge. The sand particles discharged from multiple sets of discharge pipes 8 converge into the main discharge pipe 10, realizing the centralized discharge of sand particles, which facilitates subsequent collection and processing and avoids sand particle accumulation.

[0040] Specifically, the exhaust assembly includes: a filter plate 13, arranged on one side of the support rod 12; and a positioning bolt 14, threadedly connected to the exhaust pipe 11.

[0041] With this configuration, the swirling gas flows upward through the filter plate 13, filtering out residual fine sand particles. The support rod 12 can adjust the position of the filter plate 13, and the positioning bolt 14 fixes the filter plate 13, further purifying the gas, preventing fine sand particles from being discharged with the gas, and improving the purity of the exhaust gas.

[0042] Example 3

[0043] Specifically, four sets of vortex pipes 4 are provided on one side of the main pipe 1.

[0044] Among them, the sand-bearing shale gas in the main pipeline 1 is diverted to four sets of cyclone pipelines 4 for simultaneous cyclone separation, which increases the amount of sand removed per unit time and enhances the overall sand removal capacity of the device.

[0045] Specifically, the upper end of the swirl pipe 4 is cylindrical, and the bottom is a truncated cone with a gradually decreasing cavity diameter.

[0046] In actual use, the user connects to the shale gas outlet through the flange on one side of the main pipe 1. Under the action of air pressure, the shale gas enters the interior of the four sets of cyclone pipes 4 through the diversion pipe 2. Valve 1 3 is used to control the on / off state. The gas enters the interior of the cyclone pipe 4 through the diversion pipe 2 and the air inlet 5, and is guided by the spiral guide 6. At this time, valve 2 9 on the discharge pipe 8 is not open. After the shale gas reaches the bottom, it will rise in the middle of the cyclone pipe 4 and be discharged through the gas outlet pipe 11. Larger impurities will remain at the bottom, while smaller ones will be adsorbed by the filter plate 13. When there are too many impurities inside, the user can open valve 2 9 to control the discharge of impurities. When it is necessary to clean the interior and prevent impurities from remaining, the positioning bolt 14 can be loosened and the support rod 12 can be rotated. Then, the external water source connection flange is connected to the gas outlet pipe 11 and installed with the positioning bolt 14. At this time, water can be introduced into the interior. When the water volume is too high, it will be guided by the spiral guide 6 to more easily remove the internal impurities.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cyclone diverter and flow guiding device for a shale gas wellhead desander, characterized in that, include: Main pipe (1), used to carry components; A diversion assembly is arranged on one side of the main pipe (1), including a diversion pipe (2) arranged on one side of the main pipe (1), and the diversion pipe (2) is connected to a vortex assembly, wherein the vortex assembly includes a vortex pipe (4) arranged at one end of the diversion pipe (2). The discharge assembly is arranged at the bottom of the swirling pipe (4), including a guide plate (7) at the bottom of the swirling pipe (4) and a discharge pipe (8) at the bottom of the swirling pipe (4); The exhaust assembly is arranged at the top of the swirling pipe (4), including an exhaust pipe (11) disposed at the top of the swirling pipe (4), and a support rod (12) rotatably connected to the top of the swirling pipe (4).

2. The shale gas wellhead desander cyclone diverter and flow guide device according to claim 1, characterized in that, The splitter component includes: Valve 1 (3) is located on the diversion pipe (2).

3. The shale gas wellhead desander cyclone diverter and flow guide device according to claim 2, characterized in that, The swirl assembly includes: The air inlet (5) is located at the top of the swirl pipe (4) and is connected to the diversion pipe (2); The spiral guide (6) is arranged inside the swirling pipe (4).

4. The cyclone separator diverting and guiding device for a shale gas wellhead desander according to claim 3, characterized in that, The discharge assembly includes: Valve 2 (9) is located on the discharge pipe (8); The main discharge pipe (10) is located on one side of the discharge pipe (8).

5. A shale gas wellhead desander cyclone diverter and flow guide device according to claim 4, characterized in that, The exhaust assembly includes: A filter plate (13) is arranged on one side of the support rod (12); The positioning bolt (14) is threaded onto the air outlet pipe (11).

6. The cyclone separator diverting and guiding device for a shale gas wellhead desander according to claim 1, characterized in that, Four sets of vortex pipes (4) are provided on one side of the main pipe (1).

7. The shale gas wellhead desander cyclone diverter and flow guide device according to claim 1, characterized in that, The upper end of the swirl pipe (4) is cylindrical, and the bottom is a truncated cone with a gradually decreasing cavity diameter.

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