Three-way mechanism with sand removing function

Abstract

This utility model relates to the technical field of oil and gas field pipeline components, specifically to a three-way mechanism with sand removal function. It includes a cavity, an erosion blind flange, a sand collection container, and a filtration mechanism. The cavity has an inlet, an outlet, and a sand discharge port. An open opening is located opposite the inlet. The axes of the inlet and outlet are set at an angle. The sand discharge port is located at the bottom of the cavity. The erosion blind flange and the open opening are detachably connected. The sand collection container is connected to the sand discharge port, and the filtration mechanism is detachably connected to the outlet. Sand-laden media entering from the inlet directly impacts the erosion blind flange, changing its flow direction and continuing to exit from the outlet. After being filtered again by the filtration mechanism, the solid sand is discharged from the sand discharge port at the bottom of the cavity, achieving a thorough sand removal effect on the media. Compared to existing new sand removal equipment, this method has a lower cost, reduces pipeline maintenance costs, and lowers the frequency of sand erosion leakage. Furthermore, the replacement cost of the erosion blind flange is low, and the filtration mechanism can be replaced and adjusted according to production needs.

Description

Technical Field

[0001] This utility model relates to the technical field of oil and gas field pipeline components, specifically to a tee mechanism with sand removal function. Background Technology

[0002] With continuous breakthroughs in natural gas exploration and development technology, large-volume sand fracturing technology is increasingly being applied to the stimulation of ultra-deep and high-pressure gas reservoirs. However, after gas wells using large-volume sand fracturing technology are put into production, due to the self-generated sand after the formation is fractured and the propping sand added during the fracturing process itself, as well as the degree of fracture closure, large amounts of sand are generally produced in the fracturing wells. The sand production in the gas wells then leads to a sharp increase in the risk of erosion and leakage of the surface pipelines, especially at the first tee bend at the end of the pipeline where there is a pressure drop.

[0003] To reduce the frequency of sand erosion and leakage, the current main methods are to replace pipes and elbows with stronger ones, or to add sand separators and other equipment to the pipeline to reduce the sand content of the fluid. However, replacing the entire pipeline or adding sand separators both have the problems of high modification and operating costs. In particular, sand separators occupy a large area, have a single filter density, and achieve the same filtration effect for fluids with different sand contents, resulting in resource waste. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as high frequency of pipeline erosion and leakage, and high cost of replacing the entire pipeline or adding a sand remover, and to provide a three-way mechanism with sand removal function.

[0005] This utility model provides a three-way mechanism with sand removal function, including: The cavity has an inlet, an outlet and a sand discharge port. An open opening is provided on the cavity opposite the inlet. The axes of the inlet and the outlet are set at an angle. The sand discharge port is located at the bottom of the cavity. An erosion blind flange, wherein the erosion blind flange and the opening are detachably connected; A sand collection container, wherein the sand collection container is connected to the sand discharge port; A filtration mechanism is detachably connected to the outlet.

[0006] This utility model discloses a three-way mechanism with sand removal function. By setting an erosion blind plate on the cavity, the sand-containing medium input from the inlet directly impacts and erodes the blind plate, changing its flow direction and exiting from the outlet. The solid sand in the medium can be discharged from the sand discharge port at the bottom of the cavity under the action of gravity and impact, thereby reducing the sand in the sand-containing medium. At the same time, the medium that has impacted and eroded the blind plate continues to be discharged from the outlet and can be filtered again by the filtration mechanism. The solid sand is further blocked in the cavity and discharged from the sand discharge port, achieving a thorough sand removal effect on the medium. This three-way mechanism has a good sand removal effect and a lower cost compared to existing new sand removal equipment. In addition, since the erosion blind plate is detachably connected to the cavity, the filtration mechanism can be replaced according to production needs, with low replacement cost, which can reduce pipeline maintenance costs, reduce the frequency of sand erosion leakage, and allow for the use of appropriate filtration mechanisms for fluids with different sand contents.

[0007] Preferably, the inlet is provided with an inlet pipe, the outlet with an outlet pipe, and the sand discharge port with a sand discharge pipe. The outlet is located at the top of the cavity, and the cross-section of the inlet pipe is smaller than the cross-section of the internal space of the cavity. When the medium enters the larger cavity through the inlet pipe, the medium flow velocity changes, which can reduce the flow velocity of sand in the medium and improve the sand settling and removal effect of the three-way mechanism.

[0008] Preferably, the outlet pipe is connected to the conveying pipe, and the filtration mechanism is disposed between the outlet pipe and the conveying pipe. It can be replaced or adjusted based on the amount and particle size of the medium sand, and can be easily removed later when the medium no longer contains sand.

[0009] Preferably, the filtration mechanism includes a frame and a filter screen component, the filter screen component is connected to the frame, and the frame is detachably connected to the outlet pipe.

[0010] Preferably, the filter component includes a grid filter.

[0011] Preferably, the sand collecting container is provided with a connecting pipe, and a sand guide plate is provided inside the connecting pipe. The sand guide plate is inclined towards the sand collecting container, and a channel is formed between the sand guide plate and the inner wall of the connecting pipe. The connecting pipe is connected to the sand discharge pipe. The sand guide plate is used to guide the sand in the cavity to deposit into the sand collecting container and to prevent the sand in the sand collecting container from being carried back into the cavity by the airflow.

[0012] Preferably, the sand collection container includes a conical cylinder, and a cleaning pipe is provided at the bottom of the conical cylinder.

[0013] Preferably, the inlet pipe is provided with a first valve, the connecting pipe and the sand discharge pipe are provided with a second valve, and the cleaning pipe is provided with a third valve.

[0014] Preferably, the first valve includes a gate valve, the second valve includes a flat gate valve, and the third valve includes a ball valve.

[0015] Preferably, the erosion blind flange comprises an alloy plate component. This improves the erosion resistance of the erosion blind flange, extends its service life, and reduces the frequency of replacement and leakage.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a three-way mechanism with sand removal function. By setting an erosion blind plate on the cavity, the sand-containing medium input from the inlet directly impacts and erodes the blind plate, changes the flow direction and outputs from the outlet. The solid sand in it is output from the sand discharge port at the bottom of the cavity under the action of gravity and impact, which can reduce the sand in the sand-containing medium. 2. This utility model provides a three-way mechanism with sand removal function. The medium after impact and erosion of the blind plate is filtered again through the filtration mechanism. The solid sand is further blocked in the cavity and output from the sand discharge port, which can further improve the sand removal effect. Compared with the existing new sand removal equipment, the cost is lower and the frequency of sand erosion leakage is reduced. 3. This utility model provides a tee mechanism with sand removal function, and the erosion blind flange is detachably connected to the cavity, which has a low replacement cost and can reduce pipeline maintenance costs; 4. This utility model provides a three-way mechanism with sand removal function. The filter mechanism can be replaced according to production needs, and can adopt an appropriate filter mechanism for fluids with different sand contents. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a three-way mechanism with sand removal function in Example 1.

[0018] Figure 2 This is a schematic diagram of the filtration mechanism described in Example 1.

[0019] Figure 3 This is a partial cross-sectional structural diagram of a three-way mechanism with sand removal function in Example 1.

[0020] Marked in the image: 1-Cavity, 11-Inlet, 12-Outlet, 13-Sand discharge port, 14-Open port, 15-Inlet pipe, 16-Outlet pipe, 17-Sand discharge pipe, 2-Erosion blind plate, 3-Sand collection container, 31-Connecting pipe, 32-Sand guide plate, 33-Channel, 34-Conical cylinder, 35-Cleaning pipe, 4-Filtering mechanism, 41-Frame, 42-Filter screen component, 5-Conveying pipe, 6-First valve, 7-Second valve, 8-Third valve. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0022] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0024] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0025] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0026] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0027] Example 1 like Figures 1-3 As shown, a three-way mechanism with sand removal function includes a cavity 1, an erosion blind plate 2, a sand collection container 3, and a filter mechanism 4. The cavity 1 is provided with an inlet 11, an outlet 12, and a sand discharge port 13. An open opening 14 is provided on the cavity 1 opposite to the inlet 11. The axes of the inlet 11 and the outlet 12 are set at an angle. The sand discharge port 13 is located at the bottom of the cavity 1. The erosion blind plate 2 and the open opening 14 are detachably connected. The sand collection container 3 is connected to the sand discharge port 13. The filter mechanism 4 is detachably connected to the outlet 12.

[0028] Cavity 1 is the main body of the three-way mechanism and has an internal chamber for receiving sand-containing media input from inlet 11.

[0029] In an optional embodiment, cavity 1 may be a cubic structural component, a cylindrical structural component, or a structural component of other shapes.

[0030] Taking the cavity 1 of the cubic structure as an example, the inlet 11 can be set on the side wall of the cavity 1, the erosion blind plate 2 can be set on the side wall of the cavity 1 opposite to the inlet 11, the outlet 12 can be set at the bottom of the cavity 1, the sand discharge port 13 can be set at the bottom of the cavity 1, the axes of the inlet 11 and the outlet 12 can be 90°, and the outlet 12 and the sand discharge port 13 can be set coaxially.

[0031] In optional implementations, such as Figure 3 As shown, inlet 11 can be provided with inlet pipe 15, outlet 12 can be provided with outlet pipe 16, and sand discharge port 13 can be provided with sand discharge pipe 17. The side of inlet pipe 15, outlet pipe 16 and sand discharge pipe 17 away from cavity 1 can be respectively set as connecting flange, which can facilitate detachable connection with other pipes and facilitate the addition of this tee mechanism to existing pipes.

[0032] In one or more embodiments, the cross-section of the inlet pipe 15 can be set to be smaller than the cross-section of the internal space of the cavity 1, so that when the medium is input into the cavity 1 with a larger space from the inlet pipe 15, the medium flow rate can be reduced from high flow rate to low flow rate due to the sudden change in space, thereby reducing the flow rate of sand in the medium, so that the sand is separated from the airflow under the action of gravity, and the sand settling and sand removal effect of the three-way mechanism can be improved.

[0033] The erosion blind flange 2 is used to close the opening 14 on the cavity 1 and withstand the impact of the medium, thereby improving the sand settling and sand removal effect of the three-way mechanism and reducing the replacement cost.

[0034] In an optional embodiment, the erosion blind flange 2 can be made of high-strength alloy plate components, which can improve the erosion resistance of the erosion blind flange 2, extend its service life, and thus reduce the replacement frequency and leakage frequency.

[0035] The filter mechanism 4 is installed at the outlet 12 of the cavity 1 to filter out sand from the medium after it passes through the cavity 1, thereby further reducing the sand content in the medium and reducing the frequency of erosion and leakage in subsequent pipelines.

[0036] In an optional embodiment, the outlet pipe 16 can be flange-connected to the subsequent conveying pipe 5, and the filter mechanism 4 can be installed between the outlet pipe 16 and the conveying pipe 5. It can be replaced or adjusted based on the sand content and particle size of the medium, and can be easily removed when the medium delivered later is free of sand. Compared to existing sand removal equipment requiring complete replacement, it has lower operating and replacement costs, and can be replaced and adjusted according to production conditions.

[0037] In one or more embodiments, the filtration mechanism 4 may include a frame 41 and a filter screen component 42, the filter screen component 42 being connected to the frame 41, and the frame 41 being detachably connected to the outlet pipe 16.

[0038] In optional implementations, such as Figure 2 As shown, the frame 41 can be circular or other shapes. The frame 41 can be provided with connection holes that are compatible with the flange of the outlet pipe 16, so that the outlet pipe 16, the frame 41 and the conveying pipe 5 can be connected by the same set of bolts.

[0039] In an optional embodiment, the filter element 42 may be a grid filter, which provides dense gaps and has a better filtering effect on sand and gravel.

[0040] The sand collection container 3 is used to collect the sand separated from the cavity 1 and to clean and discharge it according to the actual situation.

[0041] In one or more embodiments, the sand collecting container 3 may be provided with a connecting pipe 31, which is used to facilitate flange connection with the sand discharge pipe 17. A sand guide plate 32 may be provided inside the connecting pipe 31, which is inclined towards the sand collecting container 3. A channel 33 is formed between the sand guide plate 32 and the inner wall of the connecting pipe 31, and the connecting pipe 31 and the sand discharge pipe 17 are connected. The sand guide plate 32 is used to guide the sand in the cavity 1 to deposit into the sand collecting container 3 and to prevent the sand in the sand collecting container 3 from being carried back into the cavity 1 by the airflow.

[0042] In an optional embodiment, the sand guide plate 32 can be disposed on the side of the connecting pipe 31 near the sand collection container 3, and the included angle between the sand guide plate 32 and the side wall of the connecting pipe 31 can be 30-60°.

[0043] In an optional embodiment, the sand collection container 3 may include a circular cylindrical section and a conical cylinder 34. The circular cylindrical section is disposed above the conical cylinder 34, and a cleaning pipe 35 may be disposed at the bottom of the conical cylinder 34. The sand in the sand collection container 3 is collected and output through the cleaning pipe 35.

[0044] In one or more embodiments, the inlet pipe 15 is provided with a first valve 6, the connecting pipe 31 and the sand discharge pipe 17 are provided with a second valve 7, and the cleaning pipe 35 is provided with a third valve 8.

[0045] In an optional embodiment, the first valve 6 can be a gate valve, the second valve 7 can be a flat gate valve, and the third valve 8 can be a ball valve.

[0046] This embodiment presents a three-way mechanism with sand removal function. When used for sand filtration, this three-way mechanism is installed on the pipeline. The high-velocity sand-laden medium input from the inlet pipe 15 undergoes a sudden spatial change between the inlet pipe 15 and the cavity 1, effectively reducing the flow velocity and the velocity of the sand in the medium. This improves the sand removal effect, achieving primary sand removal. Simultaneously, the medium continues to impact and erode the blind plate 2, then flows in the reverse direction. The sand in the medium settles into the sand collection container 3 under gravity, further improving the sand removal effect and achieving secondary sand removal. The medium then flows further from the outlet pipe... The output 16 is filtered by the filter mechanism 4, and the sand is trapped in the cavity 1 and output from the sand discharge port 13. This achieves three-stage sand removal treatment, which removes sand from the sand-containing medium to the greatest extent, reduces pipeline maintenance costs, and reduces the frequency of sand erosion and leakage. When sand discharge is required, the second valve 7 is closed and the third valve 8 is opened to discharge the sand in the sand collection container 3. When the sand collection container 3 needs to be cleaned, the opening of the second valve 7 can be adjusted appropriately so that some airflow enters the sand collection container 3 with the third valve 8 open, thereby cleaning the sand collection container 3.

[0047] This embodiment of a three-way mechanism with sand removal function uses an erosion blind plate 2 installed on the cavity 1. The sand-containing medium input from the inlet 11 directly impacts the erosion blind plate 2, changes its flow direction, and is output from the outlet 12. The solid sand in the medium can be output from the sand discharge port 13 at the bottom of the cavity 1 under the action of gravity and impact, thereby reducing the sand in the sand-containing medium. At the same time, the medium after impacting and eroding the blind plate 2 continues to be output from the outlet 12 and can be filtered again by the filter mechanism 4. The solid sand in the medium is further blocked in the cavity 1 and output from the sand discharge port 13, achieving a sufficient sand removal effect on the medium. Compared with the existing new sand removal equipment, the cost is lower. In addition, since the erosion blind plate 2 is detachably connected to the cavity 1, the replacement cost is low, and the filter mechanism 4 can be replaced according to production needs, which can reduce pipeline maintenance costs, reduce the frequency of sand erosion leakage, and can adopt an appropriate filter mechanism 4 for fluids with different sand contents, thus having better adaptability.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 three-way mechanism with sand removal function, characterized in that, include: A cavity (1) is provided with an inlet (11), an outlet (12) and a sand discharge port (13). An open opening (14) is provided on the cavity (1) opposite to the inlet (11). The axes of the inlet (11) and the outlet (12) are set at an angle. The sand discharge port (13) is located at the bottom of the cavity (1). Erosion blind plate (2), wherein the erosion blind plate (2) and the opening (14) are detachably connected; A sand collection container (3) is connected to the sand discharge port (13); The filter mechanism (4) is detachably connected to the outlet (12).

2. A three-way mechanism with sand removal function according to claim 1, characterized in that, The inlet (11) is provided with an inlet pipe (15), the outlet (12) is provided with an outlet pipe (16), the sand discharge port (13) is provided with a sand discharge pipe (17), the outlet (12) is located at the top of the cavity (1), and the cross-section of the inlet pipe (15) is smaller than the cross-section of the internal space of the cavity (1).

3. A three-way mechanism with sand removal function according to claim 2, characterized in that, The outlet pipe (16) is connected to the conveying pipe (5), and the filter mechanism (4) is disposed between the outlet pipe (16) and the conveying pipe (5).

4. A three-way mechanism with sand removal function according to claim 3, characterized in that, The filtration mechanism (4) includes a frame (41) and a filter screen component (42), the filter screen component (42) being connected to the frame (41), and the frame (41) being detachably connected to the outlet pipe (16).

5. A three-way mechanism with sand removal function according to claim 4, characterized in that, The filter component (42) includes a grid filter.

6. A three-way mechanism with sand removal function according to claim 2, characterized in that, The sand collection container (3) is provided with a connecting pipe (31), and a sand guide plate (32) is provided inside the connecting pipe (31). The sand guide plate (32) is inclined toward the sand collection container (3), and a channel (33) is formed between the sand guide plate (32) and the inner wall of the connecting pipe (31). The connecting pipe (31) and the sand discharge pipe (17) are connected.

7. A three-way mechanism with sand removal function according to claim 6, characterized in that, The sand collection container (3) includes a conical cylinder (34), and a cleaning pipe (35) is provided at the bottom of the conical cylinder (34).

8. A three-way mechanism with sand removal function according to claim 7, characterized in that, The inlet pipe (15) is provided with a first valve (6), the connecting pipe (31) and the sand discharge pipe (17) are provided with a second valve (7), and the cleaning pipe (35) is provided with a third valve (8).

9. A three-way mechanism with sand removal function according to claim 8, characterized in that, The first valve (6) includes a stop valve, the second valve (7) includes a flat gate valve, and the third valve (8) includes a ball valve.

10. A three-way mechanism with sand removal function according to any one of claims 1-9, characterized in that, The erosion blind plate (2) includes an alloy plate component.

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