A four-port gas wave ejector

Abstract

The application provides a four-port gas wave ejector device, which comprises a gas wave ejector, a rotating drum arranged in the gas wave ejector, a first port and a fourth port arranged at an inlet end of the gas wave ejector, the first port and the fourth port being not communicated, a second port and a third port arranged at an outlet end of the gas wave ejector, the second port and the third port being not communicated, the first port being connected with a high-pressure well, the fourth port being connected with a low-pressure well, and the second port and the third port being connected with a gathering station respectively, and the third port being connected with a compressor. The application can reasonably eliminate the influence of compression waves generated at the closed medium-pressure port on the ejecting effect, and improve the ejecting rate and the isentropic efficiency of the device.

Description

Technical Field

[0001] This invention relates to a four-port air wave ejector device, belonging to the field of fluid pressure exchange technology. Background Technology

[0002] Gas wave ejection technology is a novel pressure energy comprehensive utilization technology, mainly applied in natural gas extraction, multi-gas combined extraction, and gathering and transmission operations. Commonly used ejection pressurization equipment includes compressor units, turbochargers, and static ejectors. Compressors and turbochargers mainly rely on blade rotation to pressurize gas through a mechanical energy conversion process. These devices suffer from problems such as complex structure, high installation and maintenance costs, and difficulty in operating with liquid. Static ejectors, on the other hand, are purely static devices that achieve pressure energy exchange through direct mixing of high and low-pressure gases. These devices suffer from significant energy loss and very low efficiency.

[0003] Gas wave boosting technology utilizes a wave rotor to achieve comprehensive utilization of pressure waves and complete energy exchange. It has advantages such as high efficiency and good liquid carrying performance. However, the traditional rotor has three ports at the inlet and outlet: high pressure inlet, low pressure inlet and medium pressure outlet. A compression wave is inevitably generated at the closed medium pressure outlet, which affects the gas expansion effect and reduces the ejection performance. Summary of the Invention

[0004] To address the aforementioned technical problems in the existing technology, this invention proposes a four-port air wave ejector device, which can effectively eliminate the influence of compression waves generated at the closure of the medium-pressure port on the ejection, thereby improving the ejection rate and isentropic efficiency of the device.

[0005] This invention proposes a four-port air wave ejector device, comprising:

[0006] A gas wave ejector, wherein a rotating drum is provided inside the gas wave ejector;

[0007] The first and fourth ports are provided at the inlet end of the air wave ejector, and the first and fourth ports are not connected; and

[0008] The second and third ports are provided at the outlet end of the air wave ejector, and the second and third ports are not connected.

[0009] The first port is connected to a high-pressure well, the fourth port is connected to a low-pressure well, the second port and the third port are respectively connected to a gathering and transmission station, and the third port is connected to a compressor.

[0010] A further improvement of the present invention is that the air wave ejector includes a housing, the inside of which the rotating drum is disposed, a left end cavity is disposed on one side of the rotating drum, and a right end cavity is disposed on the other side;

[0011] The left end cavity includes a plurality of left cavities, which are respectively connected to the first port and the fourth port; the right end cavity includes a plurality of right cavities, which are respectively connected to the second port and the third port.

[0012] A further improvement of the present invention is that the drum is a hollow annular columnar structure, the center of the drum is provided with a shaft hole, the shaft hole is provided with a stationary shaft, and the drum can rotate about the stationary shaft.

[0013] A further improvement of the present invention is that the drum is also connected to a moving shaft, which drives the drum to rotate along the stationary axis.

[0014] A further improvement of the present invention is that an inner sleeve is provided on the inner side of the drum, and a bearing is provided at one end of the inner sleeve. The inner side of the bearing is connected to the inner pressure cover of the bearing, and the outer side is connected to the outer pressure cover of the bearing.

[0015] The inner sleeve is fitted over the outside of the stationary shaft, and the drum is pressed against the stationary shaft by the outer bearing cover, the bearing, and the inner bearing cover.

[0016] A further improvement of the present invention is that the drum is provided with a plurality of drum channels along the axial direction, and the drum channels are arranged around the shaft hole.

[0017] A further improvement of the present invention is that the number of left cavities is four, the first port is connected to the first left cavity, and the side of the first left cavity connected to the drum is provided with a first arc-shaped hole connecting to the drum channel; the fourth port is connected to the second left cavity, and the side of the second left cavity connected to the drum is provided with a second arc-shaped hole connecting to the drum channel.

[0018] The number of right cavities is four. The second port is connected to the first right cavity. The side of the first right cavity connected to the drum is provided with a third arc-shaped hole that connects to the drum channel. The third port is connected to the second right cavity. The side of the second right cavity connected to the drum is provided with a fourth arc-shaped hole that connects to the drum channel.

[0019] A further improvement of the present invention is that the left cavity and the first right cavity are arranged opposite to each other, the second left cavity is offset from the first right cavity and the second right cavity, and the second right cavity is offset from the first left cavity and the second left cavity.

[0020] A further improvement of the present invention is that the angle between the center line of the first port and the vertical center line is β, the angle between the fourth port and the vertical center line is γ, and the range of |β-γ| is 0-90°.

[0021] A further improvement of the present invention is that the arc angle of the drum channel is α, the number of channels is 360 / α, and the value of α ranges from 1 to 90°.

[0022] Compared with the prior art, the advantages of the present invention are as follows:

[0023] The four-port gas wave ejector device of this invention can effectively eliminate the influence of compression waves generated at the closure of the medium-pressure port on the ejection, thereby improving the ejection rate and isentropic efficiency of the device. By utilizing the newly added second outlet port, the reverse compression wave generated inside the drum due to the closure of the port exhaust is reduced, and the position of the high-low pressure interface inside the 6-drum is controlled, thereby improving the pressurization performance and suction performance of the gas wave ejector. Attached Figure Description

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which:

[0025] Figure 1 The diagram shown is a structural schematic of a four-port air wave ejector device according to an embodiment of the present invention.

[0026] Figure 2 The diagram shown is a schematic diagram of a gas wave ejector structure according to an embodiment of the present invention.

[0027] Figure 3 for Figure 2 AA cross-section view;

[0028] Figure 4 for Figure 2 BB cross-section;

[0029] Figure 5 for Figure 2 CC cross-section;

[0030] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0031] The meanings of the reference numerals in the attached figures are as follows:

[0032] 1. Left end cavity, 2. Right end cavity, 3. Drum, 4. Stationary shaft, 5. Moving shaft, 6. First port, 7. Second port, 8. Third port, 9. Fourth port, 10. Compressor, 11. First left cavity, 12. Second left cavity, 13. First arc-shaped hole, 14. Second arc-shaped hole, 15. Pressure cap, 21. First right cavity, 22. Second right cavity, 23. Third arc-shaped hole, 24. Fourth arc-shaped hole, 31. Drum channel, 32. Shaft hole, 33. Bearing, 34. Bearing outer pressure cap, 35. Bearing inner pressure cap, 36. Inner sleeve. Detailed Implementation

[0033] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0034] Figure 1 A schematic diagram illustrates a four-port airwave ejector device according to an embodiment of the present invention, comprising an airwave ejector and a rotating drum 3 disposed within the airwave ejector. The airwave ejector has a first port 6 and a fourth port 9 at its inlet end, which are not connected; and a second port 7 and a third port 8 at its outlet end, which are not connected.

[0035] The first port 6 is connected to the high-pressure well, the fourth port 9 is connected to the low-pressure well, the second port 7 and the third port 8 are respectively connected to the gathering and transmission station, and the third port 8 is connected to the compressor 10.

[0036] When the four-port gas wave ejector device according to this embodiment is working, high-pressure gas enters from the first port 6 of the four-port gas wave ejector, expands inside the ejector, and pressurizes the original gas inside the drum 3. The pressurized gas inside the drum 3 is then discharged from the fourth port, realizing the gas pressurization and collection function. After the second port 7 of the four-port gas wave ejector is closed, the mixed gas that has not been completely discharged from the drum 3 is discharged from the third port 8. Due to the compression wave effect inside the gas wave ejector and the mixing effect, the pressure of the gas discharged from the third port 8 is lower than the gas pressure of the second port 7. After the pressure of the third port 8 is increased to match the pressure of the second port 7 by the external compressor 10, the two are mixed and collected externally.

[0037] Due to the expansion wave effect inside the four-port gas wave ejector, the pressure inside the drum channel 31 is relatively low. When the drum 3 inside the four-port gas wave ejector is connected to the fourth port 9, fresh gas is drawn into the drum 3 inside the four-port gas wave ejector under the action of the internal and external pressure difference, completing the gas priming process. Thus, the four-port gas wave ejector device completes one gas priming, pressurization and collection cycle.

[0038] In one embodiment, the air wave ejector includes a housing, inside which the rotating drum 3 is disposed, with a left end cavity 1 on one side and a right end cavity 2 on the other side;

[0039] The left end cavity 1 includes several left cavities, one or more of which are connected to the first port 6, and the other one or more of which are connected to the fourth port 9; the right end cavity 2 includes several right cavities, one or more of which are connected to the second port 7, and the other one or more of which are connected to the third port 8.

[0040] In one embodiment, the drum 3 has a hollow columnar structure with a shaft hole 32 in its middle. A stationary shaft 4 is disposed in the shaft hole 32 and is connected to the middle of the left end cavity 1. The drum 3 is also connected to a moving shaft 5. The moving shaft 5 drives the drum 3 to rotate around the stationary shaft 4.

[0041] In the four-port air wave ejector device according to this embodiment, the stationary shaft 4 is located on the left side, and the moving shaft 5 is located on the right side. In this embodiment, both the left end cavity 1 and the right end cavity 2 are annular columnar structures with a central hole at their center. The left and right cavities are respectively arranged circumferentially along the central hole. In this embodiment, the stationary shaft 4 passes through the central hole of the left end cavity 1 and extends into the shaft hole 32 of the drum 3, where it remains fixed. The moving shaft 5 passes through the central hole of the right end cavity 2 and connects to the drum 3. The moving shaft 5 is connected to a power mechanism; the rotation of the power mechanism drives the moving shaft 5 to rotate, thereby driving the drum 3 to rotate.

[0042] In a preferred embodiment, an inner sleeve 36 is provided on the inner side of the drum 3, and a bearing 33 is provided at one end of the inner sleeve 36. The inner side of the bearing 33 is connected to the inner bearing cover 35, and the outer side is connected to the outer bearing cover 34.

[0043] The inner sleeve 36 is fitted over the outside of the stationary shaft 4, and the drum 3 is pressed against the stationary shaft 4 by the outer bearing cover 34, the bearing 33 and the inner bearing cover 35.

[0044] Preferably, the moving shaft 5 includes a cylindrical moving shaft 5 body, which is fixed in the center hole of the right end cavity 2. A circular end plate is provided at one end of the moving shaft 5 body, and the edge of the circular end plate is connected to the side of the rotating drum 3.

[0045] In one embodiment, the drum 3 is provided with a plurality of axially oriented drum channels 31, which are arranged around the shaft hole 32.

[0046] In one embodiment, there are four left cavities. The first port 6 is connected to the first left cavity 11, and the first left cavity 11 is provided with a first arc-shaped hole 13 on the side of the drum 3 that is connected to the drum channel 31. The fourth port 9 is connected to the second left cavity 12, and the second left cavity 12 is provided with a second arc-shaped hole 14 on the side of the drum 3 that is connected to the drum channel 31.

[0047] The number of right cavities is four. The second port 7 is connected to the first right cavity 21. The first right cavity 21 is provided with a third arc-shaped hole 23 on the side connected to the drum 3, which is connected to the drum channel 31. The third port 8 is connected to the second right cavity 22. The second right cavity 22 is provided with a fourth arc-shaped hole 24 on the side connected to the drum 3, which is connected to the drum channel 31.

[0048] In a preferred embodiment, the left cavity and the first right cavity 21 are disposed opposite to each other, the second left cavity 12 is offset from the first right cavity 21 and the second right cavity 22, and the second right cavity 22 is offset from the first left cavity 11 and the second left cavity 12.

[0049] When using the four-port gas wave ejector device according to this embodiment, high-pressure gas enters from the first port 6 of the four-port gas wave ejector, expands inside the ejector, and pressurizes the original gas inside the drum 3. The pressurized gas inside the drum 3 is then discharged from the second port 7, achieving the function of gas pressurization and collection. After the second port 7 of the four-port gas wave ejector is closed, any remaining mixed gas inside the drum 3 is discharged from the third port 8. Due to the compression wave effect inside the gas wave ejector and the mixing effect, the pressure of the gas discharged from the third port 8 is lower than the gas pressure at the second port 7.

[0050] The external compressor 10 is used to pressurize the gas, raising the pressure at the third port 8 to match the pressure at the second port 7. The two are then mixed and transported externally. Due to the expansion wave effect inside the gas wave ejector, the pressure inside the drum channel 31 is relatively low. When the drum 3 inside the four-port gas wave ejector is connected to the fourth port 9, fresh gas is drawn into the drum 3 of the four-port gas wave ejector under the action of the internal and external pressure difference, completing the gas priming process. Thus, the four-port gas wave ejector device completes one gas priming, pressurization, and collection cycle.

[0051] In one embodiment, the angle between the centerline of the first port 6 and the vertical centerline is β, and the angle between the fourth port 9 and the vertical centerline is γ, with the range of |β-γ| being 0-90°.

[0052] In one embodiment, the arc angle of the drum channel 31 is α, the number of channels is 360 / α, and the value of α ranges from 1 to 90°.

[0053] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the invention, and all changes and / or modifications made according to embodiments of the invention should be covered within the protection scope of the invention.

Claims

1. A four-port air wave ejector device, characterized in that, include: A gas wave ejector, wherein a rotating drum (3) is provided inside the gas wave ejector; the gas wave ejector includes a housing, wherein the rotating drum (3) is provided inside the housing, and a left end cavity (1) is provided on one side of the rotating drum (3) and a right end cavity (2) is provided on the other side. The first port (6) and the fourth port (9) are provided at the inlet end of the air wave ejector, and the first port (6) and the fourth port (9) are not connected; as well as The second port (7) and the third port (8) are provided at the outlet end of the air wave ejector, and the second port (7) and the third port (8) are not connected; The first port (6) is connected to the high-pressure well, the fourth port (9) is connected to the low-pressure well, the second port (7) and the third port (8) are respectively connected to the gathering and transmission station, and the third port (8) is connected to the compressor (10). The left end cavity (1) includes several left cavities, which are respectively connected to the first port (6) and the fourth port (9); the right end cavity (2) includes several right cavities, which are respectively connected to the second port (7) and the third port (8). The drum (3) is provided with several axially oriented drum channels (31). The number of left cavities is four. The first port (6) is connected to the first left cavity (11). The first left cavity (11) is provided with a first arc-shaped hole (13) connecting to the drum (3) on its side. The fourth port (9) is connected to the second left cavity (12). The second left cavity (12) is provided with a second arc-shaped hole (14) connecting to the drum (3) on its side. The number of right cavities is four. The second port (7) is connected to the first right cavity (21). The first right cavity (21) is provided with a third arc-shaped hole (23) on the side of the drum (3) that is connected to the drum channel (31). The third port (8) is connected to the second right cavity (22). The second right cavity (22) is provided with a fourth arc-shaped hole (24) on the side of the drum (3) that is connected to the drum channel (31). The left cavity and the first right cavity (21) are arranged opposite to each other, the second left cavity (12) is offset from the first right cavity (21) and the second right cavity (22), and the second right cavity (22) is offset from the first left cavity (11) and the second left cavity (12).

2. The four-port air wave ejector device according to claim 1, characterized in that, The drum (3) is a hollow annular columnar structure. A shaft hole (32) is provided in the middle of the drum (3). A stationary shaft (4) is provided in the shaft hole (32). The drum (3) can rotate around the stationary shaft (4).

3. The four-port air wave ejector device according to claim 2, characterized in that, The drum (3) is also connected to a moving shaft (5), which drives the drum (3) to rotate along the stationary shaft (4).

4. The four-port air wave ejector device according to claim 3, characterized in that, An inner sleeve (36) is provided on the inner side of the drum (3), and a bearing (33) is provided at one end of the inner sleeve (36). The inner side of the bearing (33) is connected to the bearing inner cover (35), and the outer side is connected to the bearing outer cover (34). The inner sleeve (36) is fitted over the outside of the stationary shaft (4), and the drum (3) is pressed against the stationary shaft (4) by the outer bearing cover (34), the bearing (33) and the inner bearing cover (35).

5. The four-port air wave ejector device according to claim 4, characterized in that, The drum channel (31) is arranged around the shaft hole (32) for one revolution.

6. The four-port air wave ejector device according to claim 5, characterized in that, The angle between the centerline of the first port (6) and the vertical centerline is β, and the angle between the fourth port (9) and the vertical centerline is γ. The range of |β-γ| is 0-90°.

7. The four-port air wave ejector device according to claim 6, characterized in that, The arc angle of the drum channel (31) is α, the number of channels is 360 / α, and the value of α ranges from 1 to 90°.

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