Natural gas anti-sand hydrophobic valve

Abstract

The application discloses a natural gas sand-resistant hydrophobic valve and belongs to the technical field of hydrophobic valves. The technical problem that a valve core channel of a traditional natural gas hydrophobic valve is L-shaped, the flow rate is increased by tens of times when sand water flows through the valve core, a high-speed rotating flow is formed in the valve core, and the valve core material is extremely easy to be damaged no matter how high the hardness is is solved. The valve body shell is provided with a water inlet pipe and a water outlet pipe, the valve body shell is internally provided with a valve core, the top of the valve core is provided with a water inlet hole, a water outlet cavity of the valve core is communicated with the water outlet pipe and forms an L-shaped structure, a buffer cavity is further arranged in the valve core, the buffer cavity is communicated with the water outlet cavity, and the buffer cavity is located below the water outlet cavity; in the application, when running, sand water directly enters the water outlet cavity and the buffer cavity through the water inlet hole, the sand water rapidly expands and depressurizes in the cavity, the flow rate is greatly reduced, and then an impact-resistant sand water layer is formed at the bottom of the buffer cavity, meanwhile, the impact-resistant sand water layer also effectively protects the cavity bottom plate from being impacted, and the damage rate of the device is reduced.

Description

A natural gas anti-sand steam trap Technical Field

[0001] This invention belongs to the field of steam trap technology, specifically relating to a natural gas anti-sand steam trap. Background Technology

[0002] The extraction and production of shale gas (unconventional natural gas) differs from that of conventional natural gas. During extraction, a large amount of water and silt must be injected. During production, this sand and water must be discharged from the wellhead along with the shale gas flow, forming a high-speed sand-water flow. If the sand is not removed, it may damage various equipment on the pipeline.

[0003] Traditional natural gas steam traps, as shown in Figure 3, have an L-shaped valve core channel. When sand and water flow through the valve core, the flow velocity increases several tens of times, forming a high-speed vortex within the valve core. Regardless of the hardness of the valve core material, it is extremely susceptible to damage, often failing after only two or three days of use. This results in exhausting maintenance work for personnel and significant production losses. Therefore, solving the sand resistance problem of steam traps has become an urgent issue in shale gas production operations. This invention, the "Automatic Sand Removal Steam Trap for Natural Gas," is designed to solve the sand removal problem in steam traps. Summary of the Invention

[0004] This invention discloses a natural gas anti-sand steam trap, which aims to solve the technical problem that the valve core channel of traditional natural gas steam traps is L-shaped. When sand and water flow through the valve core, the flow velocity increases by tens of times and a high-speed vortex is formed in the valve core. No matter how high the hardness of the valve core material, it is easily damaged and often fails after two or three days of use. Maintenance personnel have to travel back and forth, which is extremely tiring, and production will also suffer significant losses.

[0005] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0006] A natural gas anti-sand drain valve includes a valve body shell, an inlet pipe and an outlet pipe, a valve core inside the valve body shell, an inlet hole at the top of the valve core, an outlet chamber of the valve core connected to the outlet pipe and forming an L-shaped structure, and a buffer chamber inside the valve core connected to the outlet chamber and located below the outlet chamber.

[0007] In this technical solution, the valve body shell can be made of copper, cast iron, cast steel, stainless steel, low-temperature steel, etc.; the inlet pipe and outlet pipe are integrally formed, and the outlet pipe is provided with a flange at the end away from the valve body shell; the principle of this solution is as follows: during operation, sand and water directly enter the outlet chamber and buffer chamber through the inlet hole. The sand and water flow into the chamber and quickly expands and depressurizes, greatly reducing the flow rate. Then, an impact-resistant sand and water layer is formed at the bottom of the buffer chamber. At the same time, the impact-resistant sand and water layer also effectively protects the bottom plate of the chamber from impact, and then is discharged through the outlet pipe.

[0008] Preferably, the diameter of the water inlet is smaller than the diameter of the water outlet.

[0009] In this technical solution, since the diameter of the inlet hole is smaller than the diameter of the outlet pipe, when the sand and water flow into the outlet pipe through the valve core, the volume will also expand, which slows down the sand and water speed, prevents damage to other downstream valves, and allows the sand and water to flow smoothly into the sand and water pool.

[0010] Preferably, the buffer cavity is filled with sand and water.

[0011] In this technical solution, before the device operates, the buffer chamber can be filled with sand and water in advance to buffer the sand and water that just enters the valve core, thus better protecting the valve core.

[0012] Preferably, a ball valve is provided at the water inlet of the valve core, a support and a first crossbar are provided at the top of the valve core, the first crossbar and the support are hinged together, and the ball valve is connected to the first crossbar.

[0013] In this technical solution, the size of the ball valve matches the size of the water inlet hole. The ball valve is used to block the water inlet hole, and the first crossbar is set to drive the ball valve to rotate, so as to open or close the water inlet hole.

[0014] Preferably, a first top cover is detachably connected to the top of the valve body housing.

[0015] In this technical solution, the first top cover is connected to the valve body shell by bolts, which facilitates disassembly. The first top cover facilitates the cleaning or maintenance of the inside of the valve body shell by the staff.

[0016] Preferably, the end of the inlet pipe away from the valve body housing is provided with a power housing, the side of the power housing away from the inlet is provided with an inlet pipe, and a float is provided inside the power housing, the bottom of the float being connected to the valve via a connecting rod.

[0017] In this technical solution, the inlet pipe and the power housing are integrally formed, and a flange is provided at the end of the inlet pipe away from the power housing. The float and connecting rod are set to realize the automatic opening and closing of the ball valve. That is, when running, sand and water enter the interior of the power housing through the inlet pipe. The sand and water gradually accumulate and slowly lift the float. During the process of the float being lifted, it drives the connecting rod to rotate, causing the valve ball to rise, thereby realizing the function of automatic opening of the valve ball.

[0018] Preferably, the connecting rod includes a second horizontal bar and a vertical bar, one end of the second horizontal bar is connected to the bottom of the float, the other end of the second horizontal bar is connected to the bottom of the vertical bar, and the end of the vertical bar away from the second horizontal bar is connected to one end of the first horizontal bar.

[0019] In this technical solution, it should be noted that setting the connecting rod in an L-shape (i.e., consisting of a second horizontal bar and a vertical bar) can reduce the overall height of the ball valve housing and the power housing. That is, if the connecting rod is straight, the straight connecting rod is connected to the first horizontal bar. At this time, the straight connecting rod is located above the valve core, which means that the height of the float and the water inlet pipe needs to be raised. Therefore, the overall height of the device needs to be increased to accommodate the float and the connecting rod, resulting in low space utilization and material waste. However, by setting the connecting rod in an L-shape, the position of the second horizontal bar is lower than the top of the valve core, which can reduce the overall height of the ball valve housing and the power housing, resulting in high space utilization.

[0020] Preferably, the top of the power housing is detachably connected to a second top cover.

[0021] In this technical solution, the second top cover is connected to the power housing by bolts, which facilitates disassembly. The second top cover also makes it easier for staff to clean or repair the inside of the power housing.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In this invention, during operation, the sand and water directly enter the outlet chamber and buffer chamber through the inlet hole. The sand and water flow into the chamber and rapidly expand and depressurize, greatly reducing the flow rate. Then, an impact-resistant sand and water layer is formed at the bottom of the buffer chamber. At the same time, the impact-resistant sand and water layer also effectively protects the bottom plate of the chamber from impact, reducing the damage rate of this device.

[0024] 2. In this invention, since the diameter of the inlet hole is smaller than the diameter of the outlet pipe, when the sand and water flow into the outlet pipe through the valve core, the expansion phenomenon will also occur, which slows down the sand and water speed, so that other valves downstream are not damaged, and the sand and water flow can smoothly flow into the sand and water pool.

[0025] 3. In this invention, setting the connecting rod to an L-shape can reduce the overall height of the ball valve housing and the power housing, resulting in high space utilization. Attached Figure Description

[0026] The present invention will be described by way of example and with reference to the accompanying drawings, wherein:

[0027] Figure 1 is a schematic diagram of the structure of the present invention;

[0028] Figure 2 is an enlarged view of point A in Figure 1;

[0029] Figure 3 is a schematic diagram of the existing valve core structure.

[0030] Figure Labels

[0031] 10-Valve body housing, 11-Outlet pipe, 12-First top cover, 13-Inlet pipe, 20-Valve core, 21-Outlet chamber, 22-Buffer chamber, 23-Inlet hole, 24-Support, 25-First crossbar, 30-Second crossbar, 31-Vertical bar, 40-Power housing, 41-Float, 42-Inlet pipe, 43-Second top cover, 60-Ball valve. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Example

[0035] The present invention will now be described in detail with reference to Figures 1-3.

[0036] As shown in Figures 1 and 2, this embodiment discloses a natural gas anti-sand drain valve, including a valve body shell 10, an inlet pipe 13 and an outlet pipe 11, a valve core 20 inside the valve body shell 10, an inlet hole 23 at the top of the valve core 20, an outlet chamber 21 of the valve core 20 connected to the outlet pipe 11 and forming an L-shaped structure, and a buffer chamber 22 inside the valve core 20, which is connected to the outlet chamber 21 and located below the outlet chamber 21. It should be noted that the valve body shell 10 can be made of copper, cast iron, cast steel, stainless steel, low temperature steel, etc.; the inlet pipe 13 and the outlet pipe 11 are integrally formed, and the end of the outlet pipe 11 away from the valve body shell 10 is provided with a flange; the principle of this scheme is as follows: during operation, sand and water directly enter the outlet chamber 21 and the buffer chamber 22 through the inlet hole 23. The sand and water flow into the chamber and quickly expands and depressurizes, and the flow rate is greatly reduced. Then, an anti-impact sand and water layer is formed at the bottom of the buffer chamber 22. At the same time, the anti-impact sand and water layer also effectively protects the bottom plate of the chamber from impact, and then is discharged through the outlet pipe 11.

[0037] As shown in Figure 1, in this embodiment, the diameter of the inlet hole 23 is smaller than the diameter of the outlet pipe 11. It should be noted that, since the diameter of the inlet hole 23 is smaller than the diameter of the outlet pipe 11, when the sand and water flow into the outlet pipe 11 through the valve core 20, an expansion phenomenon will also occur, which slows down the sand and water speed, prevents damage to other downstream valves, and allows the sand and water to flow smoothly into the sand and water pool.

[0038] As shown in Figure 1, in this embodiment, the buffer chamber 22 is filled with sand and water. It should be noted that before the device is put into operation, the buffer chamber 22 can be pre-filled with sand and water to buffer the sand and water that just enters the valve core 20, thereby better protecting the valve core 20.

[0039] As shown in Figure 2, in this embodiment, a ball valve 60 is provided at the water inlet of the valve core 20. A support 24 and a first crossbar 25 are provided at the top of the valve core 20. The first crossbar 25 and the support 24 are hinged together, and the ball valve 60 is connected to the first crossbar 25. It should be noted that the size of the ball valve 60 matches the size of the water inlet 23. The ball valve 60 is used to block the water inlet 23. The first crossbar 25 is used to rotate the ball valve 60 to open or close the water inlet 23.

[0040] As shown in Figure 1, in this embodiment, a first top cover 12 is detachably connected to the top of the valve body housing 10. It should be noted that the first top cover 12 is connected to the valve body housing 10 by bolts, which facilitates disassembly. The first top cover 12 facilitates the cleaning or maintenance of the inside of the valve body housing 10 by the operator.

[0041] As shown in Figure 1, in this embodiment, the end of the inlet pipe 13 away from the valve body housing 10 is provided with a power housing 40, and the side of the power housing 40 away from the inlet is provided with an inlet pipe 42. A float 41 is provided inside the power housing 40, and the bottom of the float 41 is connected to the valve via a connecting rod. It should be noted that the inlet pipe 42 and the power housing 40 are integrally formed, and the end of the inlet pipe 42 away from the power housing 40 is provided with a flange. The float 41 and the connecting rod are used to realize the automatic opening and closing of the ball valve 60. That is, during operation, sand and water enter the interior of the power housing 40 through the inlet pipe 42. The sand and water gradually accumulate and slowly lift the float 41. During the lifting process of the float 41, it drives the connecting rod to rotate, causing the valve ball to rise, thereby realizing the function of automatically opening the valve ball.

[0042] As shown in Figure 1, in this embodiment, the connecting rod includes a second horizontal bar 30 and a vertical bar 31. One end of the second horizontal bar 30 is connected to the bottom of the float 41, and the other end of the second horizontal bar 30 is connected to the bottom of the vertical bar 31. The end of the vertical bar 31 away from the second horizontal bar 30 is connected to one end of the first horizontal bar 25. It should be noted that setting the connecting rod in an L-shape (i.e., composed of the second horizontal bar 30 and the vertical bar 31) in this solution can reduce the overall height of the ball valve 60 housing and the power housing 40. That is, if the connecting rod is straight, the straight connecting rod is connected to the first horizontal bar 25. At this time, the straight connecting rod is located above the valve core 20, which requires the height of the float 41 and the water inlet pipe 13 to be raised. Then, the overall height of the device needs to be increased to accommodate the float 41 and the connecting rod, resulting in low space utilization and material waste. However, setting the connecting rod in an L-shape, so that the position of the second horizontal bar 30 is lower than the top of the valve core 20, can reduce the overall height of the ball valve 60 housing and the power housing 40, resulting in high space utilization.

[0043] As shown in Figure 1, in this embodiment, a second top cover 43 is detachably connected to the top of the power housing 40. It should be noted that the second top cover 43 is connected to the power housing 40 by bolts, which facilitates disassembly. The second top cover 43 facilitates the cleaning or maintenance of the interior of the power housing 40 by personnel.

[0044] The working principle of this embodiment is as follows:

[0045] During operation, sand and water enter the interior of the power housing 40 through the inlet pipe 42. The sand and water gradually accumulate and slowly lift the float 41. During the lifting process of the float 41, the connecting rod rotates, causing the valve ball to rise and open automatically. The sand and water directly enter the outlet chamber 21 and the buffer chamber 22 through the inlet hole 23. The sand and water flow into the chamber and quickly expands and depressurizes, greatly reducing the flow rate. Then, an anti-impact sand and water layer is formed at the bottom of the buffer chamber 22. At the same time, the anti-impact sand and water layer also effectively protects the bottom plate of the chamber from impact. After that, the sand and water is discharged through the outlet pipe 11.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A natural gas anti-sand steam trap, characterized in that, The valve body includes a valve housing (10), which has an inlet pipe (13) and an outlet pipe (11). A valve core (20) is located inside the valve housing (10). The valve core (20) has an inlet hole (23) at its top. The outlet chamber (21) of the valve core (20) is connected to the outlet pipe (11) and forms an L-shaped structure. A buffer chamber (22) is also located inside the valve core (20), which is connected to the outlet chamber (21) and is located below the outlet chamber (21). A ball valve (60) is located at the inlet of the valve core (20). A support (24) and a first crossbar (25) are located at the top of the valve core (20). The first crossbar (25) and the support (24) are hinged. The ball valve (60) is connected to the first crossbar (25); the end of the water inlet pipe (13) away from the valve body shell (10) is provided with a power shell (40), the side of the power shell (40) away from the water inlet is provided with an inlet pipe (42), and the power shell (40) is provided with a float (41), the bottom of the float (41) is connected to the valve through a connecting rod; the connecting rod includes a second crossbar (30) and a vertical rod (31), one end of the second crossbar (30) is connected to the bottom of the float (41), the other end of the second crossbar (30) is connected to the bottom of the vertical rod (31), and the end of the vertical rod (31) away from the second crossbar (30) is connected to one end of the first crossbar (25).

2. The natural gas anti-sand trap according to claim 1, characterized in that, The diameter of the inlet hole (23) is smaller than the diameter of the outlet pipe (11).

3. A natural gas anti-sand trap according to claim 1, characterized in that, The buffer cavity (22) is filled with sand and water.

4. A natural gas anti-sand trap according to claim 1, characterized in that, The valve body housing (10) is detachably connected to a first top cover (12).

5. A natural gas anti-sand trap according to claim 1, characterized in that, The top of the power housing (40) is detachably connected to a second top cover (43).

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