A five-port cycle bleed air gas wave ejector

Abstract

The application provides a five-port circulation bleed air 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 the compression wave generated at the closed medium-pressure port on the ejecting, and improve the ejecting rate and the isentropic efficiency of the device.

Description

Technical Field

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

[0002] Gas wave ejector technology is a novel pressure energy exchange technology that can be used in fields such as natural gas gathering and transportation. Commonly used natural gas gathering and transportation equipment includes compressors, scroll 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 complex maintenance and narrow adaptability to various operating conditions. Static ejectors, on the other hand, suffer from severe mixing and low pressurization efficiency.

[0003] Gas wave boosting technology uses a rotating drum to achieve pressure exchange, which has the advantages of high efficiency, good liquid carrying performance and high adaptability to working conditions. 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 five-port circulating air-induced wave ejector device, which can reasonably eliminate the influence of compression waves generated at the closed medium-pressure port on the ejection, improve the ejection rate and isentropic efficiency of the device, utilize circulating gas to pre-pressurize the fresh gas in the drum, improve pressure energy utilization efficiency, reduce shock wave loss, and enhance air-induced pressure performance.

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

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

[0007] The first port, fourth port, and fifth port are disposed at the inlet end of the air wave ejector, and the first port, fourth port, and fifth port are not interconnected; 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 the high-pressure well, the fourth port is connected to the low-pressure well, the second port is connected to the gathering and transportation station, and the third port is connected to the fifth port.

[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 several left cavities, some of which are connected to the first port, some of which are connected to the fourth port, and the remaining left cavities are connected to the fifth port; the right end cavity includes several right cavities, which are connected to the second port and the third port respectively.

[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 five, the first port is connected to the first left cavity, and the first left cavity is provided with a first arc-shaped hole on the side of the drum that connects to the drum channel.

[0018] The fourth port is connected to the second left cavity, and the second left cavity is provided with a second arc-shaped hole on the side of the drum that connects to the drum channel;

[0019] The fifth port is connected to the third left cavity, and the third left cavity is provided with a fifth arc-shaped hole on the side of the drum that connects to the drum channel;

[0020] 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.

[0021] A further improvement of the present invention is that the first left cavity and the first right cavity are arranged opposite to each other, the second left cavity and the third left cavity are both offset from the first right cavity and the second right cavity, and the second right cavity is offset from the first left cavity, the second left cavity and the third left cavity.

[0022] 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°.

[0023] 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°.

[0024] Compared with the prior art, the advantages of the present invention are as follows:

[0025] The five-port circulating air-wave ejector device of the present invention can effectively eliminate the influence of the compression wave generated at the closed medium-pressure port on the ejection, improve the ejection rate and isentropic efficiency of the device, utilize the circulating gas to pre-pressurize the fresh gas in the drum, improve the pressure energy utilization efficiency, reduce shock wave loss, and improve the air wave pressurization performance.

[0026] The five-port circulating induced draft gas wave ejector of this invention utilizes a newly added third port to reduce the reverse compression wave generated inside the drum due to the closure of the port exhaust, controls the position of the high and low pressure interface inside the drum, and improves the suction performance. It also utilizes circulating gas to pre-pressurize the fresh gas in the drum, improving pressure energy utilization efficiency, reducing shock wave loss, and enhancing the gas wave pressurization performance. Attached Figure Description

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which:

[0028] Figure 1 The diagram shown is a schematic representation of a five-port circulating air-wave ejector device according to an embodiment of the present invention.

[0029] Figure 2 The diagram shown is a schematic diagram of a gas wave ejector structure according to an embodiment of the present invention.

[0030] Figure 3 for Figure 2 A schematic diagram of the AA cross-section;

[0031] Figure 4 for Figure 2 BB cross-sectional diagram;

[0032] Figure 5 for Figure 2 A schematic diagram of the CC cross-section;

[0033] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0034] The meanings of the reference numerals in the attached figures are as follows:

[0035] 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. Fifth port, 11. First left cavity, 12. Second left cavity, 13. First arc-shaped hole, 14. Second arc-shaped hole, 15. Fifth arc-shaped hole, 16. Third left cavity, 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 cover, 35. Bearing inner cover, 36. Inner sleeve. Detailed Implementation

[0036] 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.

[0037] Figure 1 The diagram schematically illustrates a five-port circulating air-wave ejector device according to an embodiment of the present invention, comprising an air-wave ejector, wherein a rotating drum 3 is disposed within the air-wave ejector; the inlet end of the air-wave ejector is provided with a first port 6, a fourth port 9, and a fifth port 10, wherein the first port 6, the fourth port 9, and the fifth port 10 are not connected to each other; the outlet end of the air-wave ejector is provided with a second port 7 and a third port 8, wherein the second port 7 and the third port 8 are not connected.

[0038] Specifically, 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 is connected to the gathering and transmission station, and the third port 8 is connected to the fifth port 10.

[0039] When the five-port circulating gas wave ejector device according to this embodiment is working, high-pressure gas enters from the first port 6 of the five-port gas wave ejector, expands inside the five-port gas wave ejector, compresses the original gas inside the drum 3, and increases its pressure. The pressurized gas inside the drum 3 is discharged from the second port 7, realizing the gas pressurization and collection function. After the second port 7 of the five-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 at the second port 7, but higher than the fresh gas pressure at the fourth port 9.

[0040] When the internal drum 3 of the five-port gas wave ejector is connected to the fourth port 9, fresh gas is drawn into the drum 3 under the action of the internal and external pressure difference, completing the gas priming process. After the priming is completed, the gas discharged from the third port 8 is introduced into the five-port gas wave ejector through the fifth port 10 to pre-pressurize the gas in the drum 3. At this time, the gas state inside the drum 3 is the original gas state. Thus, the five-port gas wave ejector device completes one priming, pressurization, and collection cycle of pre-pressurization.

[0041] In one embodiment, such as Figure 2 As shown, the air wave ejector includes a housing, and the rotating drum 3 is disposed inside the housing. A left end cavity 1 is disposed on one side of the rotating drum 3, and a right end cavity 2 is disposed on the other side.

[0042] The left end cavity 1 includes several left cavities, one or a portion of which is connected to the first port 6, another or a portion of which is connected to the fourth port 9, and another one or a portion of which is connected to the fifth port 10; the right end cavity 2 includes several right cavities, one or a portion of which is connected to the second port 7, and another one or a portion of which is connected to the third port 8.

[0043] 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.

[0044] In the five-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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] In one embodiment, such as Figure 3 As shown, there are five left cavities. 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 22 on the side of the drum 3 that is connected to the drum channel 31.

[0050] 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.

[0051] The fifth port 10 is connected to the third left cavity, and the third left cavity is provided with a fifth arc-shaped hole 15 on the side of the drum 3 that connects to the drum channel 31.

[0052] like Figure 4 As shown, there are four right cavities. The second port 7 is connected to the first right cavity 21. The first right cavity 21 has a third arc-shaped hole 23 on its 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 has a fourth arc-shaped hole 24 on its side connected to the drum 3, which is connected to the drum channel 31.

[0053] When the five-port circulating gas wave ejector device according to this embodiment is working, high-pressure gas enters from the first port 6 of the five-port gas wave ejector, expands inside the five-port gas wave ejector, compresses the original gas inside the drum 3, and increases its pressure. The pressurized gas inside the drum 3 is discharged from the second port 7, realizing the gas pressurization and collection function. After the second port 7 of the five-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 at the second port 7, but higher than the fresh gas pressure at the fourth port 9.

[0054] When the internal drum 3 of the five-port gas wave ejector is connected to the fourth port 9, fresh gas is drawn into the drum 3 under the action of the internal and external pressure difference, completing the gas priming process. After the priming is completed, the gas discharged from the third port 8 is introduced into the five-port gas wave ejector through the fifth port 10 to pre-pressurize the gas in the drum 3. At this time, the gas state inside the drum 3 is the original gas state. Thus, the five-port gas wave ejector device completes one priming, pressurization, and collection cycle of pre-pressurization.

[0055] In one embodiment, the first left cavity 11 and the first right cavity 21 are disposed opposite to each other, the second left cavity 12 and the third left cavity are both 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, the second left cavity 12 and the third left cavity.

[0056] 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°.

[0057] 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°.

[0058] 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 five-port circulating 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), the fourth port (9), and the fifth port (10) at the inlet end of the air wave ejector are provided, and the first port (6), the fourth port (9), and the fifth port (10) are not connected to each other; and 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) is connected to the gathering and transportation station, and the third port (8) is connected to the fifth port (10). The left end cavity (1) includes several left cavities, a portion of which is connected to the first port (6), a portion of which is connected to the fourth port (9), and the remaining left cavities are connected to the fifth port (10); the right end cavity (2) includes several right cavities, which are connected to the second port (7) and the third port (8) respectively. The drum (3) is provided with several axially oriented drum channels (31). The number of left cavities is five. The first port (6) is connected to the first left cavity (11). The first left cavity (11) is connected to the side of the drum (3) and has a first arc-shaped hole (13) that connects 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 connects to the drum channel (31). The fifth port (10) is connected to the third left cavity, and the third left cavity is provided with a fifth arc-shaped hole (15) on the side of the drum (3) that is connected to the drum channel (31). 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) connecting to the drum (3) on its side. 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) connecting to the drum (3) on its side. The first left cavity (11) and the first right cavity (21) are arranged opposite to each other. The second left cavity (12) and the third left cavity are offset from the first right cavity (21) and the second right cavity (22). The second right cavity (22) is offset from the first left cavity (11), the second left cavity (12) and the third left cavity.

2. The five-port circulating 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 five-port circulating 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 five-port circulating 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 five-port circulating 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 five-port circulating 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 five-port circulating 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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