CN118309937A - Liquid-gas adding vibration combined drag reduction conveying device for dredging pipeline - Google Patents

Abstract

The invention discloses a dredging pipeline liquid-gas vibration combined drag reduction conveying device, which comprises a gas-liquid mixing generation module, a pressurizing pipe, a high-pressure jet module and a vibration exciter, wherein the vibration exciter is arranged on a dredging slurry pipeline, and is positioned on the side of the high-pressure jet module, from which a gas-liquid mixture is emitted, and is close to the high-pressure jet module; the high-pressure jet module comprises a flow guide ring pipe and jet pipes which are distributed in an annular array mode, the inner circumferential surface of the flow guide ring pipe is uniformly provided with a plurality of outlets, each outlet is connected with one jet pipe, the jet pipe comprises a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are connected and are arranged at 90 degrees, the second branch pipe is attached to the inner wall of a dredging mud pipeline and is axially arranged at 10-30 degrees with the dredging mud pipeline, so that a high-pressure gas-liquid mixture emitted from the jet pipe can be attached to the pipeline wall in an annular rotary flow mode in the dredging mud pipeline, and microbubbles are uniformly attached to all parts of the pipeline. The invention can uniformly exert the drag reduction effect, reduce the resistance loss and simultaneously avoid the problems of sediment accumulation and blockage.

Description

Liquid-gas adding vibration combined drag reduction conveying device for dredging pipeline

Technical Field

The invention relates to the technical field of superhard clay, in particular to a liquid-gas vibration combined drag reduction conveying device for a dredging pipeline.

Background

The dredging mud pipeline transportation is a transportation mode for transporting solid-phase particles such as sediment, gravel, pebbles and the like in the pipeline by taking water as a carrier, and has the advantages of low pollution, continuous operation, large transportation capacity and the like, thereby being widely applied to industries such as channel dredging, seabed ditching, sewage treatment and the like. Because the slurry has the characteristics of high viscosity, high density and the like, the friction force and collision force between the slurry and the pipe wall are large, the energy loss of the fluid can be increased, the service life of a conveying pipeline is shortened, and the slurry is easy to accumulate on a reverse slope and a bent pipe section because the movement speed of the slurry is smaller than the flow speed of the pipe flow, so that the system is stopped, maintained and pigged, and the engineering efficiency and the cost are seriously influenced.

In order to solve the engineering problems of high energy consumption, pipeline blockage, pipeline corrosion and the like, students at home and abroad are striving to find a solution. In actual engineering, a mode of arranging a relay pump station in the middle of a slurry pipeline is often adopted, so that external energy input is increased, and the resistance loss of slurry is overcome, but the auxiliary conveying mode has the new problems of complex equipment, difficult installation, inconvenient operation and the like; or the pipeline erosion problem is solved by replacing a new pipe, but the pipeline abrasion cannot be reduced from the source, so that the problems of high cost, low efficiency and the like are caused.

Chinese patent publication No. CN116105075A discloses a cross array type jet aeration slurry conveying device, which comprises: a liquid delivery system, a gas delivery system for forming a gas-liquid mixture; the jet system comprises a jet module, a jet module and a slurry conveying module, wherein the jet module is connected with the tail end of the liquid conveying system through a pressurizing module and is used for jetting the gas-liquid mixture into the slurry conveying module through the jet module; the jet flow module is provided with a plurality of split ring pipes which are connected with the pressurizing module through split straight pipes, each split ring pipe is provided with a plurality of outlets, and the outlets on adjacent split ring pipes are distributed in a staggered manner; the bionic jet ports which are arranged on the pipe wall in a crossing manner are injected into the mud pipeline, so that the drag reduction effect is exerted uniformly, friction and collision between silt particles and the pipe wall are reduced, resistance loss is reduced, the service life of the pipeline is prolonged, meanwhile, the problem of silt accumulation and blockage is avoided due to jet impact, and long-distance pipeline conveying of mud is ensured. When the gas-liquid mixture is injected into a slurry pipeline, the gas-liquid mixture is directly injected in a mode parallel to the axial direction of the pipeline, a single axial jet flow can change the flow field structure near the pipeline wall to a certain extent, directly impact sediment and lump stones near the wall surface, and prevent the phenomenon of siltation and blockage.

Disclosure of Invention

The invention provides a dredging pipeline liquid-gas vibration combined drag reduction conveying device, which is used for solving the problems in the prior art, wherein micro bubbles are generated by the drag reduction conveying device through an air compressor, a pressure air storage tank and a micropore medium, a gas-liquid mixture is formed by the drag reduction conveying device and clean water pumped by a centrifugal water pump, a high-pressure mixture is further formed by pressurizing the gas-liquid mixture through a pressurizing pipe, jet pipes which are distributed in an annular array mode on a pipe wall are injected into a dredging mud pipeline to be adhered to the pipe wall to form annular rotary flow, the drag reduction effect is uniformly exerted, friction and collision between sediment particles and the pipe wall are reduced, the resistance loss is reduced, the service life of the pipeline is prolonged, meanwhile, the problem of sediment accumulation and blockage is avoided by jet impact, and long-distance pipeline conveying of mud is ensured.

The invention is realized in such a way that a dredging pipeline and liquid-gas vibration combined drag reduction conveying device comprises a gas-liquid mixing generation module, a pressurizing pipe and a high-pressure jet module, wherein an outlet of the gas-liquid mixing generation module is connected with an inlet of the high-pressure jet module through the pressurizing pipe, the high-pressure jet module is arranged on a dredging mud pipeline, and an outlet of the high-pressure jet module is communicated with the inside of the dredging mud pipeline, so that a gas-liquid mixture is injected into the dredging mud pipeline through the pressurizing pipe and the high-pressure jet module;

the vibration exciter is arranged on the dredging slurry pipeline, is positioned on the side of the high-pressure jet module, which emits the gas-liquid mixture, and is close to the high-pressure jet module, so that a slight gap is formed between the inner wall of the dredging slurry pipeline and the slurry, and the high-pressure jet module can conveniently emit the high-pressure gas-liquid mixture;

The high-pressure jet flow module comprises a flow guide ring pipe and jet pipes which are distributed in an annular array mode, wherein an inlet of the flow guide ring pipe is connected with an outlet of the pressurizing pipe, a plurality of outlets are uniformly formed in the inner circumferential surface of the flow guide ring pipe, each outlet is connected with one jet pipe, the jet pipes comprise a first branch pipe and a second branch pipe, the first branch pipe is connected with the second branch pipe and is arranged at 90 degrees, the first branch pipe is arranged along the radial direction of a dredging mud pipeline and extends into the dredging mud pipeline, the second branch pipe is attached to the inner wall of the dredging mud pipeline and is arranged at 10-30 degrees with the axial direction of the dredging mud pipeline, so that a high-pressure gas-liquid mixture emitted from the jet pipes can be attached to the pipe wall in the dredging mud pipeline to flow in an annular rotation mode, and microbubbles are uniformly attached to all positions of the pipe wall.

Preferably, the vibration exciter is a high-frequency low-amplitude vibrator.

Preferably, the outlet of the second branch pipe faces the slurry flowing direction in the dredging slurry pipeline.

Preferably, a one-way flow valve is arranged in each jet pipe near the outlet of the jet pipe.

Preferably, the gas-liquid mixing generation module comprises a gas conveying module and a liquid conveying module, wherein an outlet of the gas conveying module is connected with the liquid conveying module through a micropore medium, so that compressed air conveyed by the gas conveying module is dispersed into a plurality of microbubbles and clear water conveyed by the liquid conveying module to form a gas-liquid mixture.

Further preferably, the gas delivery module comprises an air compressor and a pressure gas storage tank which are sequentially connected, a turbocharger is arranged on a pipeline connected with the air compressor and the pressure gas storage tank, a gas meter and a constant pressure regulating valve are arranged on a high-pressure pipeline at the outlet of the pressure gas storage tank, and a micropore medium is arranged at the outlet of the high-pressure pipeline, and the outlet of the high-pressure pipeline is communicated with the liquid delivery module through the micropore medium.

Further preferably, the liquid delivery module comprises a water storage tank and a centrifugal water pump which are sequentially connected, a flowmeter is arranged on a fluid pipeline at the outlet of the centrifugal water pump, and the position where the fluid pipeline is connected with the gas delivery module is close to the outlet of the fluid pipeline.

Still further preferably, the outlet of the fluid conduit is connected to the inlet of the pressurized tube so that the gas-liquid mixture formed can quickly pass through the pressurized tube into the high pressure jet module.

Compared with the prior art, the invention has the advantages and positive effects that:

(1) The drag reduction conveying device combines the effects of the vibration exciter under the effects of the micro-bubble drag reduction and the high-pressure jet flow, and the vibration exciter generates high-frequency low-amplitude vibration, so that the liquid on the wall surface of the dredging mud pipeline and the wall surface generate fine gaps, and the resistance influence of the slurry in the pipeline on the gas-liquid mixture injected under high pressure is reduced. The injection of the gas-liquid mixture changes the flow field structure near the pipe wall, directly impacts the sediment and the lump stones near the wall surface, has larger impact force than the pure gas jet, avoids the problem of sediment accumulation and blockage, and ensures the long-distance pipeline transportation of the mud; and by utilizing the viscosity and density difference of the slurry and the air, a layer of thin mixture of micro bubbles and the slurry is formed at the side wall of the pipeline in a jet flow mode, so that the effective viscosity and density of the slurry near the wall surface are reduced, the friction and collision between silt particles and the pipeline wall are reduced, and the service life of the pipeline is prolonged.

(2) The jet pipes are distributed in an annular array mode, so that the high-pressure gas-liquid mixture of jet flows entering the pipe wall is more uniform, the high-pressure gas-liquid mixture is fused with the slurry more quickly, the drag reduction effect can be exerted earlier, and the adhesion of microbubbles around the pipe wall is more uniform. The tail end of the jet pipe and the axial direction of the dredging mud pipeline are at a certain small angle, collision energy of the high-pressure gas-liquid mixture and mud is excessively lost as much as possible, and meanwhile, the high-pressure gas-liquid mixture can initially present annular rotary flow attached to the pipe wall, so that micro bubbles can be attached to the periphery of the pipe wall more quickly and uniformly to form a gas film, and friction resistance between the slurry and the wall surface is reduced.

(3) The drag reduction conveying device utilizes the turbocharger, ensures that jet flow has enough pressure to be injected into the dredging mud pipeline, and can stop working after the pressure in the pipeline reaches a preset value, thereby being more energy-saving and environment-friendly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a dredging pipeline and liquid-gas vibration combined drag reduction conveying device provided by an embodiment of the invention;

FIG. 2 is a schematic structural view of a jet pipe according to an embodiment of the present invention;

FIG. 3 is a radial cross-sectional view of a jet pipe mated with a dredging mud conduit provided by an embodiment of the present invention;

figure 4 is an axial cross-sectional view of a jet pipe mated with a dredging mud conduit provided by an embodiment of the present invention.

In the figure: 1. an air compressor; 2. a turbocharger; 3. a pressure air storage tank; 4. a gas meter and a constant pressure regulating valve; 5. a microporous medium; 6. a water storage tank; 7. a centrifugal water pump; 8. a flow meter; 9. a pressurizing tube; 10. a diversion ring pipe; 11. jet pipe; 11-1, branch pipe I; 11-2, branch pipes II; 12. a vibration exciter; 13. dredging mud pipelines.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Examples

Referring to fig. 1 to 4, an embodiment of the present invention provides a dredging pipe liquid-gas vibration combined drag reduction conveying device, which includes a gas-liquid mixing generating module, a pressurizing pipe 9, a high-pressure jet module and a vibration exciter 12, wherein an outlet of the gas-liquid mixing generating module is connected with an inlet of the high-pressure jet module through the pressurizing pipe 9, the high-pressure jet module is mounted on a dredging mud pipe 13, and an outlet of the high-pressure jet module is communicated with the inside of the dredging mud pipe 13, so as to inject a gas-liquid mixture into the dredging mud pipe 13 through the pressurizing pipe 9 and the high-pressure jet module.

The gas-liquid mixing generation module comprises a gas conveying module and a liquid conveying module, wherein an outlet of the gas conveying module is connected with the liquid conveying module through a micropore medium 5, so that compressed air conveyed by the gas conveying module is dispersed into a plurality of microbubbles and clear water conveyed by the liquid conveying module to form a gas-liquid mixture.

Specifically, the gas delivery module includes air compressor 1, the pressure gas holder 3 that connect gradually, set up turbo charger 2 on the pipeline that air compressor 1 and pressure gas holder 3 are connected, be provided with gasometer and constant pressure governing valve 4 on the high-pressure pipeline of pressure gas holder 3 export, micropore medium 5 sets up the exit at this high-pressure pipeline, and the export of high-pressure pipeline communicates with the liquid delivery module through micropore medium 5.

The air compressor 1 is used to supply air, providing the gas required for the jet. The turbocharger 2 is used for providing stable pressure for the pressure gas storage pipe; when the pressure air tank 3 reaches a predetermined pressure, the turbocharger 2 stops operating. The pressure air storage tank 3 is used for storing compressed air, provides buffering for the compressed air, removes air flow pulsation in a pipeline, and ensures that a pipeline system can obtain constant air pressure. The gas meter is used to measure the flow rate of the compressed air. The constant pressure regulating valve is used for guaranteeing automatic shutdown of the air compressor 1, maintaining the air pressure in the pressure air storage tank 3 within a proper range, and when the set pressure is reached, the air compressor 1 automatically stops, so that an energy-saving effect is achieved, and accidents are prevented. The microporous medium 5 is a loose porous structure, and can disperse the compressed air into a plurality of microbubbles to form a gas-liquid mixture with the clean water conveyed by the water storage tank 6.

The liquid conveying module comprises a water storage tank 6 and a centrifugal water pump 7 which are sequentially connected, a flowmeter 8 is arranged on a fluid pipeline at the outlet of the centrifugal water pump 7, and the position where the fluid pipeline is connected with the gas conveying module is close to the outlet of the fluid pipeline.

The water storage tank 6 is used for storing clean water, and in order to remove air flow pulsation in the pipeline, the pipeline system is ensured to obtain constant air pressure. The centrifugal water pump 7 is used for supplying clean water and providing the liquid required for the jet flow. The flow meter 8 is used to measure the flow rate of the fresh water.

The outlet of the fluid pipeline is connected with the inlet of the pressurizing pipe 9, so that the formed gas-liquid mixture can quickly enter the high-pressure jet module through the pressurizing pipe 9. The pressurizing pipe 9 pressurizes the gas-liquid mixture to a specified range and feeds into the high-pressure jet module.

The high-pressure jet flow module comprises a guide ring pipe 10 and jet pipes 11 which are distributed in an annular array mode, wherein an inlet of the guide ring pipe 10 is connected with an outlet of the pressurizing pipe 9, a plurality of outlets are uniformly formed in the inner circumferential surface of the guide ring pipe 10, each outlet is connected with one jet pipe 11, each jet pipe 11 comprises a first branch pipe 11-1 and a second branch pipe 11-2, the first branch pipe 11-1 and the second branch pipe 11-2 are connected and are arranged at 90 degrees, the first branch pipe 11-1 is arranged along the radial direction of the dredging mud pipeline 13 and extends into the dredging mud pipeline 13, the second branch pipe 11-2 is attached to the inner wall of the dredging mud pipeline 13 and is arranged at 10-30 degrees with the axial direction of the dredging mud pipeline 13, so that a high-pressure gas-liquid mixture ejected from the jet pipes 11 can be attached to the pipe wall in the dredging mud pipeline 13 to form annular rotation flow, and microbubbles are uniformly attached to all the pipe wall. The outlet of the second branch pipe 11-2 is directed in the direction of the slurry flow in the dredging slurry pipe 13, facilitating a faster mixing of the jet and the slurry.

The high-pressure jet module is used as a conveying channel of the high-pressure gas-liquid mixture to jet into the dredging mud pipeline 13, so that the high-pressure gas-liquid mixture and the mud are mixed and jointly advanced. The high-pressure jet module consists of a guide ring pipe 10 and six jet pipes 11 which are arranged in an annular array mode and are inserted into a dredging mud pipeline 13, and the tail end of each jet pipe 11 has a bending angle of 90 degrees and faces the flow direction of slurry in the pipeline, so that jet flow and mud can be mixed together more quickly. And the tail end of each jet pipe 11 presents a certain small angle with the axial direction of the dredging mud pipeline 13, so that the jetted high-pressure gas-liquid mixture can be adhered to the pipeline wall in the pipeline to form annular rotary flow, and microbubbles can be adhered to all parts of the pipeline wall more uniformly.

A one-way flow valve is arranged in each jet pipe 11 near the outlet thereof. Jet pipe 11 is used for injecting a high-pressure gas-liquid mixture into dredging mud pipe 13; the streamlined profile reduces drag of the slurry as it flows through jet pipe 11; and a one-way flow valve is arranged at the position close to the outlet of the jet pipe 11, when the device is in normal operation, the high-pressure gas-liquid mixture is injected into the dredging mud pipeline 13 through the one-way flow valve, and when the device stops working, the one-way flow valve is closed to prevent sediment from penetrating into the jet pipe 11, so that the normal operation of the device is ensured.

The vibration exciter 12 is arranged on the dredging mud pipeline 13, the vibration exciter 12 is positioned on the side of the high-pressure jet module, which emits the gas-liquid mixture, and is close to the high-pressure jet module, so that a micro gap is formed between the inner wall of the dredging mud pipeline 13 and the slurry, and the high-pressure gas-liquid mixture emitted by the high-pressure jet module is conveniently added. The vibration exciter 12 is a high frequency low amplitude vibrator. The vibration exciter 12 generates high-frequency low-amplitude vibration, so that the excited part of the dredging slurry pipeline 13 generates non-simple harmonic vibration which diffuses from the center to the periphery, and the exciting force is transmitted to the slurry in the pipeline to generate an agitating effect, thereby facilitating the filling of the gas-liquid mixture into the pipeline and reducing the influence of the impact resistance of the slurry in the pipeline. Specifically, the exciting force generated by the exciter 12 can be adjusted according to the concentration of the conveyed slurry so as to determine the best effect.

In order to more clearly understand the technical scheme of the invention, the working principle of the invention is described below, and the technical scheme is as follows:

Air is first drawn into the air compressor 1 through an inlet duct, and then gas is fed into a compression chamber in the air compressor 1, where it is compressed, thereby increasing its density and pressure, and when the gas has reached the desired pressure, it is then fed into the pressure reservoir 3. When only the air compressor 1 may not ensure that the air can obtain enough pressure, a turbocharger 2 is added between the air compressor 1 and the pressure air storage tank 3 to continuously lift the pressure value of the air, and the turbocharger 2 plays a role in balancing and adjusting the pressure in the pipeline and between the pressure air storage tank 3.

After the operation of the air compressor 1 and the turbocharger 2, the pressure air tank 3 is brought to a predetermined pressure and a sufficient amount of compressed air is supplied; the compressed air passes through a high-pressure pipeline, a gas meter and a constant-pressure regulating valve and then reaches the microporous medium 5, wherein the compressed air is divided into micro bubbles, and is connected with a fluid pipeline, and the micro bubbles and clean water conveyed by a centrifugal water pump 7 from a water storage tank 6 are mutually mixed to generate a gas-liquid mixture of the micro bubbles and the clean water; finally, the gas-liquid mixture is pressurized by the pressurizing pipe 9 and enters the high-pressure jet module, and simultaneously, under the cooperation of the vibration exciter 12, the gas-liquid mixture is sent into the dredging mud pipeline 13 through the jet pipe 11.

The vibration exciter 12 can generate high-frequency low-amplitude vibration, so that a slight gap is formed between the inner wall of the pipeline and the slurry, and the gas-liquid mixture is easier to add. The high-pressure jet module consisting of the guide ring pipe 10 and six jet pipes 11 which are distributed in an annular array mode and are inserted into the dredging mud pipeline 13 can enable the high-pressure jet and the slurry to be mixed together more quickly, the jet direction is consistent with the mud conveying direction and a certain small angle is formed in the axial direction of the pipeline, so that energy loss in the fusion process is reduced, the jet can flow in the pipeline in a certain annular rotation mode, and the process of attaching bubbles to the wall surface is quickened.

In the initial working process, the running power of the centrifugal water pump 7 and the air compressor 1 is exponentially regulated according to the gas meter and the flowmeter 8 until the optimal mixing ratio of micro bubbles and clear water is found, so that the optimal drag reduction, anti-blocking and anti-erosion effects are realized, and the long-distance pipeline transportation of slurry is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (8)

1. The device comprises a gas-liquid mixing generation module, a pressurizing pipe and a high-pressure jet module, wherein an outlet of the gas-liquid mixing generation module is connected with an inlet of the high-pressure jet module through the pressurizing pipe, the high-pressure jet module is arranged on a dredging mud pipeline, and an outlet of the high-pressure jet module is communicated with the inside of the dredging mud pipeline, so that a gas-liquid mixture is injected into the dredging mud pipeline through the pressurizing pipe and the high-pressure jet module; the method is characterized in that:

the vibration exciter is arranged on the dredging slurry pipeline, is positioned on the side of the high-pressure jet module, which emits the gas-liquid mixture, and is close to the high-pressure jet module, so that a slight gap is formed between the inner wall of the dredging slurry pipeline and the slurry, and the high-pressure jet module can conveniently emit the high-pressure gas-liquid mixture;

The high-pressure jet flow module comprises a flow guide ring pipe and jet pipes which are distributed in an annular array mode, wherein an inlet of the flow guide ring pipe is connected with an outlet of the pressurizing pipe, a plurality of outlets are uniformly formed in the inner circumferential surface of the flow guide ring pipe, each outlet is connected with one jet pipe, the jet pipes comprise a first branch pipe and a second branch pipe, the first branch pipe is connected with the second branch pipe and is arranged at 90 degrees, the first branch pipe is arranged along the radial direction of a dredging mud pipeline and extends into the dredging mud pipeline, the second branch pipe is attached to the inner wall of the dredging mud pipeline and is arranged at 10-30 degrees with the axial direction of the dredging mud pipeline, so that a high-pressure gas-liquid mixture emitted from the jet pipes can be attached to the pipe wall in the dredging mud pipeline to flow in an annular rotation mode, and microbubbles are uniformly attached to all positions of the pipe wall.

2. The dredging pipe liquid-gas vibration combined drag reduction conveying device according to claim 1, wherein the vibration exciter is a high-frequency low-amplitude vibrator.

3. The dredging pipe and liquid-gas vibration combined drag reduction conveying device according to claim 1, wherein the outlet of the second branch pipe faces the flow direction of slurry in the dredging slurry pipe.

4. The dredging pipe and liquid-gas vibration combined drag reduction conveying device according to claim 1, wherein a one-way flow valve is arranged in each jet pipe near the outlet of each jet pipe.

5. The dredging pipeline liquid-gas vibration combined drag reduction conveying device according to claim 1, wherein the gas-liquid mixing generation module comprises a gas conveying module and a liquid conveying module, and an outlet of the gas conveying module is connected with the liquid conveying module through a micropore medium, so that compressed air conveyed by the gas conveying module is dispersed into a plurality of microbubbles and clear water conveyed by the liquid conveying module to form a gas-liquid mixture.

6. The dredging pipeline liquid-gas vibration combined drag reduction conveying device according to claim 5, wherein the gas conveying module comprises an air compressor and a pressure gas storage tank which are sequentially connected, a turbocharger is arranged on a pipeline connected with the air compressor and the pressure gas storage tank, a gas meter and a constant pressure regulating valve are arranged on a high-pressure pipeline at the outlet of the pressure gas storage tank, and a micropore medium is arranged at the outlet of the high-pressure pipeline and is communicated with the liquid conveying module through the micropore medium.

7. The dredging pipeline liquid-gas vibration combined drag reduction conveying device according to claim 5, wherein the liquid conveying module comprises a water storage tank and a centrifugal water pump which are sequentially connected, a flowmeter is arranged on a fluid pipeline at an outlet of the centrifugal water pump, and the fluid pipeline is connected with the gas conveying module at a position close to the outlet of the fluid pipeline.

8. The dredging conduit and liquid-gas vibration combined drag reduction conveying device according to claim 7, wherein the outlet of the fluid conduit is connected with the inlet of the pressurizing pipe, so that the formed gas-liquid mixture can quickly enter the high-pressure jet module through the pressurizing pipe.