Oilfield self-flow water injection pipeline switch valve

Abstract

The utility model relates to the technical field of oilfield water injection exploitation, and discloses an oilfield self-flow water injection pipeline switch valve which comprises a valve seat, a valve body is fixedly connected to the middle of the top wall of the valve seat, a filtering mechanism is arranged in the valve seat and used for filtering impurities, a quick release mechanism is arranged in the valve body, and the quick release mechanism is connected with the valve body. The quick release mechanism is used for quickly maintaining the valve; the filtering mechanism comprises two circular grooves, the two circular grooves are formed in the left side and the right side of the inner wall of the valve seat, springs are installed on the left side and the right side of the inner wall of each circular groove, and first sealing gaskets are installed at the tail ends of the springs. The filter screen is placed in the middle of the fixing block and slides into the valve seat, the spring pushes the first sealing gasket to be tightly attached to the two sides of the filter screen, water flow bypass is prevented, impact is buffered, the connecting block is rotated, the plug pin penetrates through and is fixed in the first clamping groove, during maintenance, the plug pin is pulled out, the connecting block is rotated, the filter screen is rapidly taken out to be cleaned or replaced, and the service life of the valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of oilfield water injection and extraction technology, and in particular to an oilfield gravity-flow water injection pipeline switch valve. Background Technology

[0002] The self-flowing water injection pipeline switch valve is a key device in the oilfield water injection system used to control the flow of fluid in the water injection pipeline. It is mainly installed on the self-flowing water injection pipeline and adjusts the water injection volume, controls the water injection process, or isolates the pipeline area by opening or closing the valve.

[0003] A search revealed Chinese patent publication number CN221974329U, which discloses a self-flowing water injection pipeline switch valve for oilfields. The valve includes a valve body with a water outlet pipe fixedly connected to its top outer side. Inside the water outlet pipe are a limit baffle, a conical water control element, and a cylindrical water control element. A threaded rod is fixedly connected to the bottom of the cylindrical water control element, with the bottom end of the threaded rod penetrating the valve body and threadedly connected to it. This self-flowing water injection pipeline switch valve controls the up-and-down movement of the relatively small cylindrical water control element to control the flow of water. This reduces the pressure on the cylindrical water control element and makes it difficult for sand and gravel to remain in the vertical section inside the water outlet pipe, preventing wear on the cylindrical water control element and ensuring its service life. The force of water pushing the cylindrical water control element actually causes it to move further into the water outlet pipe, preventing leakage. However, prolonged use can clog the valve flow channel, leading to jamming or reduced flow. High-speed fluid carrying sand and gravel can also erode the sealing surface, accelerating wear and potentially causing leakage. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a self-flowing water injection pipeline switch valve for oil fields, which aims to improve the problems in the prior art where long-term use can clog the valve flow channel, leading to difficulty in opening and closing or flow reduction; and high-speed fluid carrying sand and gravel can erode the sealing surface, aggravate wear, and cause leakage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oilfield gravity-flow water injection pipeline switch valve, comprising a valve seat, a valve body fixedly connected to the middle of the top wall of the valve seat, a filter mechanism provided inside the valve seat for filtering impurities, a quick-release mechanism provided inside the valve body for quickly maintaining the valve; the filter mechanism includes a circular groove, two circular grooves being formed on the left and right sides of the inner wall of the valve seat, springs being installed on both sides of the inner wall of the circular grooves, a sealing gasket being installed at the end of the springs, a filter screen being provided inside the circular grooves, and a fixing component being provided on the top of the valve seat.

[0006] The above technical solution involves a filtration mechanism for filtering impurities, a quick-release mechanism for rapid valve maintenance, a spring that pushes the sealing gasket tightly against both sides of the filter screen to prevent unfiltered water from bypassing and to buffer water flow impact, and a filter screen for intercepting rust impurities.

[0007] As a further description of the above technical solution:

[0008] The fixing component includes fixing blocks, and multiple fixing blocks are fixedly connected to the left and right sides of the top wall of the valve seat. Two fixing blocks are rotatably connected to the opposite side of their top walls. The top wall of the filter screen is provided with a slot on both the front and back sides, and a pin is provided inside the slot.

[0009] The above technical solution involves rotating the connecting block on the fixed block to insert the pin into the slot one on the filter screen.

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

[0011] The quick-release mechanism includes a threaded groove, which is formed on the top wall of the valve body. A second retaining groove is formed in the lower middle part of the inner wall of the threaded groove. A second sealing gasket is installed on the inner wall of the second retaining groove. A threaded post is threadedly connected to the inner wall of the threaded groove. A turntable is fixedly connected to the top of the threaded post. A valve assembly is provided inside the valve body.

[0012] Through the above technical solution: the rotating turntable drives the threaded column to descend in the threaded groove. When the threaded column moves to the position of the slot 2, the sealing gasket 2 in the slot 2 is pressed and adheres to the outer wall of the threaded column to achieve a seal.

[0013] As a further description of the above technical solution:

[0014] The valve assembly includes a valve stem that passes through the middle of the top wall of the threaded column. A column valve is fixedly connected to the bottom of the outer wall of the valve stem, and a rotary disc is fixedly connected to the top of the outer wall of the valve stem.

[0015] Through the above technical solution: rotating the turntable 2 can drive the main valve to rotate through the valve stem, controlling its opening and closing with the valve seat to cut off or guide the water flow.

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

[0017] The springs are equidistantly installed on the left and right sides of the inner wall of the circular groove, and the springs are made of nickel-based alloy.

[0018] Through the above technical solution: the springs are evenly distributed on the left and right sides of the circular groove, which can make the filter screen receive uniform elastic support force, avoiding the filter screen tilting or local sealing failure due to uneven force. The elastic modulus of the nickel-based alloy is stable, and even under long-term compression, it can maintain reliable rebound force, ensuring that the sealing gasket is always in close contact with the filter screen.

[0019] As a further description of the above technical solution:

[0020] The connecting block engages with the slot via a pin, and the filter screen is slidably connected to the adjacent side of the outer wall of the two fixed blocks.

[0021] Through the above technical solution: the pin passes through the connecting block and is inserted into the slot one on the filter screen, and the filter screen is placed in the center of the fixing block.

[0022] As a further description of the above technical solution:

[0023] The valve stem is rotatably connected to the middle of the inner wall of the threaded column, and the column valve is rotatably connected to the middle of the inner wall of the valve seat.

[0024] The above technical solution allows the valve stem to drive the valve rod to rotate within the valve seat, thereby opening and closing the valve.

[0025] As a further description of the above technical solution:

[0026] Flanges are fixedly connected to the left and right ends of the outer wall of the valve seat, and multiple connection holes are equidistantly opened on the outer wall of the flange.

[0027] The above technical solution allows for the rapid connection of water injection pipes of different diameters by fastening the flanges on both sides with bolts through the connection holes, ensuring the continuity of the pipeline system.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, a filter screen is installed, placed in the middle of the fixing block and slid into the valve seat. The spring pushes the sealing gasket to fit tightly against both sides of the filter screen to prevent water flow bypass and buffer the impact. The connecting block is rotated, and the pin passes through and is fixed in the slot. During maintenance, the pin is pulled out, the connecting block is rotated, and the filter screen is quickly taken out for cleaning or replacement, thus extending the valve's life.

[0030] 2. In this utility model, the turntable 1 drives the threaded column to descend into the slot 2, and the sealing gasket 2 fits against the outer wall of the threaded column 302 to achieve a seal. The turntable 2 drives the column valve to rotate to control the water flow. During maintenance, the turntable 1 is rotated in the opposite direction to quickly remove the whole unit, realizing tool-free quick disassembly and maintenance, improving maintenance efficiency and reducing the risk of leakage. Attached Figure Description

[0031] Figure 1This is a front view of an oilfield gravity-flow water injection pipeline switch valve proposed in this utility model;

[0032] Figure 2 A perspective view of a self-flowing water injection pipeline switch valve for oil fields proposed in this utility model;

[0033] Figure 3 This is a cross-sectional view of a self-flowing water injection pipeline switch valve for oil fields proposed in this utility model;

[0034] Figure 4 This utility model proposes a switch valve for an oilfield gravity-flow water injection pipeline. Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 This is a partial structural breakdown diagram of an oilfield gravity-flow water injection pipeline switching valve proposed in this utility model.

[0036] Legend:

[0037] 1. Valve seat; 2. Filtering mechanism; 201. Circular groove; 202. Spring; 203. Sealing gasket one; 204. Filter screen; 205. Fixing assembly; 2051. Fixing block; 2052. Connecting block; 2053. Slot one; 2054. Pin; 3. Quick release mechanism; 301. Threaded groove; 302. Threaded column; 303. Slot two; 304. Sealing gasket two; 305. Rotary disc one; 306. Valve assembly; 3061. Valve stem; 3062. Piston valve; 3063. Rotary disc two; 4. Valve body; 5. Flange; 6. Connecting hole. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0039] Reference Figure 2 , Figure 3 and Figure 4This utility model provides an embodiment of an oilfield gravity-flow water injection pipeline switch valve, including a valve seat 1. A valve body 4 is fixedly connected to the middle of the top wall of the valve seat 1. A filter mechanism 2 is provided inside the valve seat 1 to filter impurities. A quick-release mechanism 3 is provided inside the valve body 4 for quick valve maintenance. The filter mechanism 2 includes two circular grooves 201, which are formed on the left and right sides of the inner wall of the valve seat 1. Springs 202 are installed on both sides of the inner wall of the circular grooves 201. A sealing gasket 203 is installed at the end of the spring 202. A filter screen 204 is provided inside the circular grooves 201. The springs 202 push the sealing gasket 203 to press tightly against both sides of the filter screen 204 to prevent unfiltered water from bypassing and to buffer the water flow impact. The filter screen 204 is used to intercept rust impurities. A fixing component 205 is provided on the top of valve seat 1. The fixing component 205 includes fixing blocks 2051. Multiple fixing blocks 2051 are fixedly connected to the left and right sides of the top wall of valve seat 1. Two fixing blocks 2051 are rotatably connected to the side of their top walls that are far apart. When the connecting blocks 2052 on the fixing blocks 2051 are rotated, slots 2053 are provided on the front and rear sides of the top wall of filter screen 204. A pin 2054 is provided inside the slot 2053. The connecting block 2052 is engaged with the slot 2053 through the pin 2054. The pin 2054 passes through the connecting block 2052 and is inserted into the middle of the slot 2053 on the filter screen 204. The filter screen 204 is slidably connected to the adjacent side of the outer wall of the two fixing blocks 2051. The filter screen 204 is placed in the center of the fixing blocks 2051.

[0040] Specifically, the filter mechanism 2 is used to filter impurities, and the quick-release mechanism 3 is used for quick valve maintenance. During the installation of the filter screen 204, the filter screen 204 should first be placed in the center of the fixing block 2051, and then slid into the valve seat 1. The function of the spring 202 is to push the sealing gasket 203 so that it fits tightly against both sides of the filter screen 204 to prevent unfiltered water from bypassing the filter screen 204 and to buffer the impact of water flow. Next, by rotating the connecting block 2052 on the fixing block 2051, the pin 2054 is passed through the connecting block 2052 and inserted into the middle of the slot 2053 on the filter screen 204. When maintenance is required, simply pull out the pin 2054 and rotate the connecting block 2052 to release the engagement with the filter screen 204, thereby quickly removing the filter screen 204 for cleaning or replacement.

[0041] Reference Figure 2 and Figure 5The quick-release mechanism 3 includes a threaded groove 301, which is formed on the top wall of the valve body 4. A second retaining groove 303 is formed in the lower middle part of the inner wall of the threaded groove 301. A second sealing gasket 304 is installed on the inner wall of the second retaining groove 303. A threaded post 302 is threadedly connected to the inner wall of the threaded groove 301. A turntable 305 is fixedly connected to the top of the threaded post 302. The turntable 305 drives the threaded post 302 to descend within the threaded groove 301. When the threaded post 302 moves to the position of the second retaining groove 303, the second sealing gasket 304 inside the second retaining groove 303 is pressed against the outer wall of the threaded post 302 to achieve a seal. The valve body 4 has an internal... A valve assembly 306 is provided, which includes a valve stem 3061 that passes through the middle of the top wall of the threaded column 302. A column valve 3062 is fixedly connected to the bottom of the outer wall of the valve stem 3061, and a turntable 3063 is fixedly connected to the top of the outer wall of the valve stem 3061. The valve stem 3061 is rotatably connected to the middle of the inner wall of the threaded column 302. The turntable 3063 drives the column valve 3062 to rotate through the valve stem 3061. The column valve 3062 is rotatably connected to the middle of the wall of the valve seat 1. The valve stem 3061 drives the column valve 3062 to rotate within the valve seat 1, ensuring that the opening and closing function of the valve is realized.

[0042] Specifically, rotating the first turntable 305 causes the threaded column 302 to move downward along the threaded groove 301. When the threaded column 302 descends to the second slot 303, the sealing gasket 304 in the second slot 303 is pressed tightly against the outer wall of the threaded column 302, thus completing the seal. At this time, by rotating the second turntable 3063, the valve stem 3061 can drive the column valve 3062 to rotate, thereby controlling its opening and closing state with the valve seat 1 to achieve water flow cutoff or conduction. During maintenance, by rotating the first turntable 305 in the opposite direction, the threaded column 302 is disengaged from the threaded groove 301, so that the whole can be quickly removed from the valve body 4, realizing tool-free quick disassembly and maintenance. This not only improves maintenance efficiency but also reduces the risk of leakage. At the same time, the valve stem 3061 drives the column valve 3062 to rotate in the valve seat 1, ensuring that the valve's opening and closing function is realized.

[0043] Reference Figure 1 , Figure 2 and Figure 3Springs 202 are equidistantly installed on the left and right sides of the inner wall of the circular groove 201. The springs 202 are equidistantly distributed on the left and right sides of the circular groove 201, which can make the filter screen 204 receive uniform elastic support force, and avoid the filter screen 204 tilting or local sealing failure due to uneven force. The springs 202 are made of nickel-based alloy. The elastic modulus of nickel-based alloy is stable. Even if it is under compression for a long time, it can maintain reliable rebound force, ensuring that the sealing gasket 203 is always tightly attached to the filter screen 204. Flanges 5 are fixedly connected to the left and right ends of the outer wall of the valve seat 1. Multiple connection holes 6 are equidistantly opened on the outer wall of the flange 5. By passing bolts through the flanges 5 on both sides of the connection holes 6, water injection pipes of different diameters can be quickly connected to ensure the continuity of the pipeline system.

[0044] Specifically, springs 202 are evenly distributed on the left and right sides of the circular groove 201, which can make the filter screen 204 receive uniform elastic support force, avoiding the filter screen 204 tilting or local sealing failure due to uneven force. The elastic modulus of the nickel-based alloy is stable, and even under long-term compression, it can maintain reliable rebound force, ensuring that the sealing gasket 203 is always tightly attached to the filter screen 204. By bolting through the flanges 5 on both sides of the connecting hole 6, water injection pipes of different diameters can be quickly connected, ensuring the continuity of the pipeline system.

[0045] Working principle: When installing the filter screen 204, place the filter screen 204 in the middle of the fixing block 2051, slide the filter screen 204 into the valve seat 1, and the spring 202 pushes the sealing gasket 203 to press tightly against both sides of the filter screen 204 to prevent unfiltered water from bypassing and to buffer the impact of water flow. Rotate the connecting block 2052 on the fixing block 2051 to insert the pin 2054 through the connecting block 2052 into the middle of the slot 2053 on the filter screen 204. When maintenance is required, pull out the pin 2054, rotate the connecting block 2052 to release the engagement with the pin 2054 of the filter screen 204, and the filter screen 204 can be quickly removed for cleaning or replacement.

[0046] Rotating turntable 305 drives the threaded column 302 to descend within the threaded groove 301. When the threaded column 302 moves to the position of the second slot 303, the sealing gasket 304 in the second slot 303 is pressed against the outer wall of the threaded column 302 to achieve a seal. At this time, rotating turntable 3063 can drive the column valve 3062 to rotate through the valve stem 3061, controlling its opening and closing with the valve seat 1 to cut off or conduct water flow. During maintenance, rotating turntable 305 in the opposite direction will disengage the threaded column 302 from the threaded groove 301, allowing the entire valve to be quickly removed from the valve body 4, achieving tool-free quick disassembly and maintenance, improving maintenance efficiency and reducing leakage risk.

[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 self-flowing water injection pipeline switch valve for oilfields, comprising a valve seat (1), characterized in that: A valve body (4) is fixedly connected to the middle of the top wall of the valve seat (1). A filter mechanism (2) is provided inside the valve seat (1). The filter mechanism (2) is used to filter impurities. A quick-release mechanism (3) is provided inside the valve body (4). The quick-release mechanism (3) is used to quickly repair the valve. The filter mechanism (2) includes a circular groove (201), two circular grooves (201) are opened on the left and right sides of the inner wall of the valve seat (1), and springs (202) are installed on the left and right sides of the inner wall of the circular groove (201). A sealing gasket (203) is installed at the end of the spring (202). A filter screen (204) is provided inside the circular groove (201), and a fixing component (205) is provided on the top of the valve seat (1).

2. The oilfield gravity-flow water injection pipeline switch valve according to claim 1, characterized in that: The fixing component (205) includes a fixing block (2051), and multiple fixing blocks (2051) are fixedly connected to the left and right sides of the top wall of the valve seat (1). The top walls of two fixing blocks (2051) are rotatably connected to a connecting block (2052) on the side away from each other. The front and rear sides of the top wall of the filter screen (204) are provided with a slot (2053), and a pin (2054) is provided inside the slot (2053).

3. The oilfield gravity-flow water injection pipeline switch valve according to claim 1, characterized in that: The quick-release mechanism (3) includes a threaded groove (301), which is opened on the top wall of the valve body (4). A second slot (303) is opened in the lower middle part of the inner wall of the threaded groove (301). A second sealing gasket (304) is installed on the inner wall of the second slot (303). A threaded post (302) is threadedly connected to the inner wall of the threaded groove (301). A turntable (305) is fixedly connected to the top of the threaded post (302). A valve assembly (306) is provided inside the valve body (4).

4. The oilfield gravity-flow water injection pipeline switch valve according to claim 3, characterized in that: The valve assembly (306) includes a valve stem (3061) that passes through the middle of the top wall of the threaded column (302). A column valve (3062) is fixedly connected to the bottom of the outer wall of the valve stem (3061), and a turntable (3063) is fixedly connected to the top of the outer wall of the valve stem (3061).

5. The oilfield gravity-flow water injection pipeline switch valve according to claim 1, characterized in that: The springs (202) are equidistantly installed on the left and right sides of the inner wall of the circular groove (201), and the springs (202) are made of nickel-based alloy.

6. The oilfield gravity-flow water injection pipeline switch valve according to claim 2, characterized in that: The connecting block (2052) engages with the slot (2053) via a pin (2054), and the filter screen (204) is slidably connected to the adjacent side of the outer wall of the two fixed blocks (2051).

7. The oilfield gravity-flow water injection pipeline switch valve according to claim 4, characterized in that: The valve stem (3061) is rotatably connected to the middle of the inner wall of the threaded column (302), and the column valve (3062) is rotatably connected to the middle of the inner wall of the valve seat (1).

8. The oilfield gravity-flow water injection pipeline switch valve according to claim 1, characterized in that: The valve seat (1) is fixedly connected to flanges (5) on both the left and right ends of its outer wall, and the outer wall of the flange (5) is provided with multiple connection holes (6) at equal intervals.

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