CN219159827U

CN219159827U - Multiphase flow pressure reducing baffling speed reducer

Info

Publication number: CN219159827U
Application number: CN202320265513.XU
Authority: CN
Inventors: 熊伟丞; 卓威; 张辉
Original assignee: Beijing Haidian Zhongjing Engineering Design Software Technology Co ltd
Current assignee: Beijing Haidian Zhongjing Engineering Design Software Technology Co ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-06-09
Anticipated expiration: 2033-02-08

Abstract

The utility model relates to the technical field of medium-high pressure multiphase flow decompression deceleration scour prevention, in particular to a multiphase flow decompression baffling speed reducer, which comprises an inflow pipe, a reducing pipe, an expansion pipe, an outflow pipe, a flange and a plugging flange, wherein a disturbing pipe is fixedly communicated between the inflow pipe and the expansion pipe, and the lower end of the inner part of the expansion pipe is provided with an erosion material which is in a solid structure and is tightly installed with the inner wall of the expansion pipe; according to the utility model, through the disturbing pipe, the volume of the mixed fluid entering the inflow pipe is increased, the fluid manifold is changed, and the pressure of the mixed fluid is reduced along with the increase of the inner cavity, so that the impact force of solid phase in the mixed fluid on the abrasion-resistant inner pipe and the noise generated by impact are reduced, and the service life of the utility model is prolonged.

Description

Multiphase flow pressure reducing baffling speed reducer

Technical Field

The utility model relates to the technical field of medium-high pressure multiphase flow decompression, deceleration and scour prevention, in particular to a multiphase flow decompression, baffling and deceleration device.

Background

In the industrial production process of petroleum, chemical industry, environmental protection industry and the like, the fluid of medium-pressure or high-pressure liquid-solid two phases is required to be decompressed and separated so as to meet the downstream process conditions. While meeting the solid-liquid or solid-liquid-gas separation requirements, it is generally desirable to reduce impact on piping and equipment, and flexible installation, small footprint, and long service life are required.

The pressure reducer used for decompressing and separating the fluid of medium-pressure or high-pressure liquid-solid phases is a pressure reducer, and the working principle of the existing pressure reducer is generally as follows: the volume of the cavity is enlarged after the liquid-containing gas passes through the pressure reducing device so as to meet the requirement of fluid expansion, and the device has the advantages of large treatment capacity, small energy consumption and the like, but because the gas, liquid and solid phases expand in the cavity, the solid phase medium is easy to damage the inner cavity of the pressure reducer, and the service life of the pressure reducer is shortened. In view of this, we propose a multiphase flow pressure reducing baffling reducer.

Disclosure of Invention

In order to make up for the defects, the utility model provides a multiphase flow decompression baffling speed reducer.

The technical scheme of the utility model is as follows:

the multiphase flow pressure reducing baffling speed reducer comprises an inflow pipe, a reducing pipe, an expansion pipe, an outflow pipe, a flange and a plugging flange, wherein a disturbing pipe is fixedly communicated between the inflow pipe and the expansion pipe, and the disturbing pipe is used for expanding the mixed fluid entering the inflow pipe and changing the fluid manifold;

the lower end of the inside of the dilatation tube is provided with an erosion material which is of a solid structure and is tightly installed with the inner wall of the dilatation tube, and the erosion material is used for colliding with a high-density medium in the mixed fluid to change the flow direction and the flow velocity.

Preferably, the inflow pipe, the reducing pipe, the dilatation pipe, the flange and the plugging flange are sequentially and fixedly connected from top to bottom, the inner cavities of the inflow pipe, the reducing pipe and the dilatation pipe are mutually communicated, and the outflow pipe is fixedly communicated and installed on one side of the dilatation pipe.

Preferably, the inner walls of the cavities, which are communicated with each other, of the upper ends of the inflow pipe, the reducing pipe and the dilatation pipe are fixedly provided with wear-resistant inner pipes, and the erosion material is positioned below the wear-resistant inner pipes.

Preferably, the erosion material is recessed downward against the flow direction of the mixed fluid to form a concave surface, a spherical surface or a plane surface.

Preferably, the height of the connecting port of the disturbing pipe and the dilatation pipe is positioned in the height range of the cavity of the outflow pipe.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the disturbing pipe, the mixed fluid entering the inflow pipe is subjected to expansion and change of fluid manifold, the pressure of the mixed fluid is reduced along with the increase of the inner cavity, so that the impact force and impact noise of solid phase in the mixed fluid on the abrasion-resistant inner pipe are reduced, the service life of the utility model is prolonged, the impact part of the solid phase in the mixed fluid is also changed by the change of the fluid manifold, after the mixed fluid is depressurized, the mixed fluid becomes gas, liquid and solid three phases to expand in the abrasion-resistant inner pipe, the high-density medium in the mixed fluid downwards flows to impact the upper surface of the erosion material, so that the flow direction and the flow velocity of the mixed fluid are changed, the flow velocity of the high-density medium in the mixed fluid is reduced, the fluid depressurization and deceleration can be completed without additionally changing the flow direction of the pipeline, and simultaneously, the utility model can obtain good depressurization and deceleration effects under the condition that the flow, the pressure and the gas-liquid-solid ratio are changed frequently, and the depressurization and deceleration fields of various gas-liquid-solid media are widely applied.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the present utility model with its internal structure broken away.

In the figure:

1. an inflow tube;

2. reducing pipes;

3. a capacity expansion pipe;

4. an outflow tube;

5. a flange;

6. a flow disturbing pipe;

7. a wear resistant inner tube;

8. etching the material;

9. and plugging the flange.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements 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 utility model.

Referring to fig. 1-2, the present utility model is described in detail by the following embodiments:

the multiphase flow decompression baffling speed reducer is formed by fixedly connecting an inflow pipe 1, a reducing pipe 2, a capacity expansion pipe 3, a flange 5 and a plugging flange 9 from top to bottom in sequence, wherein an outflow pipe 4 is fixedly connected to one side of the capacity expansion pipe 3, inner cavities of the inflow pipe 1, the reducing pipe 2 and the capacity expansion pipe 3 are mutually communicated, a wear-resistant inner pipe 7 is fixedly arranged on the inner wall of a cavity in which the upper ends of the inflow pipe 1, the reducing pipe 2 and the capacity expansion pipe 3 are mutually communicated, the inner wall of the cavity of the inflow pipe 1, the reducing pipe 2 and the capacity expansion pipe 3 is thickened by the wear-resistant inner pipe 7, and the wear-resistant inner pipe 7 has good wear resistance and impact resistance.

In this embodiment, a disturbing pipe 6 is fixedly connected between the inflow pipe 1 and the expansion pipe 3, the disturbing pipe 6 is used for expanding the volume of the mixed fluid entering the inflow pipe 1 and changing the fluid manifold, the height of the connecting port between the disturbing pipe 6 and the expansion pipe 3 is located in the height range of the cavity of the outflow pipe 4, the lower end of the inner part of the expansion pipe 3 is provided with an erosion material 8, the erosion material 8 is located below the wear-resistant inner pipe 7, the erosion material 8 is in a solid structure and is tightly and fixedly connected with the inner wall of the expansion pipe 3, the erosion material 8 is sunk downward against the flowing direction of the mixed fluid to form a concave surface, a spherical surface or a plane, and the erosion material 8 is used for colliding with a high-density medium in the mixed fluid to change the flowing direction and the flowing speed.

In this embodiment, the ratio of the inner diameter of the dilatation tube 3 to the inner diameter of the inflow tube 1 is 1:3, the ratio of the inner diameter of the turbulent tube 6 to the inner diameter of the inflow tube 1 is 1:3, the distance between the communication position of the turbulence tube 6 and the inflow tube 1 and the lowest end of the inflow tube 1 is L, and L is 1 to 3 times the inner diameter of the inflow tube 1.

In this embodiment, when 0.5-3.0 MPa of solid-containing mixed fluid flows into the inflow pipe 1, a part of the mixed fluid flows into the expansion pipe 3 along the inner wall of the abrasion-resistant inner pipe 7 in the inflow pipe 1 and the reducing pipe 2, a part of the mixed fluid enters the expansion pipe 3 along the turbulent pipe 6, the mixed fluid entering the inflow pipe 1 changes the fluid flow shape and the expansion, as the inner cavity increases, the pressure of the mixed fluid decreases, thereby reducing the noise generated by the impact force and the impact on the abrasion-resistant inner pipe 7, after the mixed fluid is depressurized, the mixed fluid becomes gas, liquid and solid phases flowing downwards to impact the upper surface of the erosion 8, so that the flow direction and the flow velocity of the mixed fluid change, the flow velocity of a high-density medium in the mixed fluid decreases, and then the flow velocity of the mixed fluid is reduced from the outflow pipe 4 to the downstream, the flow velocity and the pressure of the mixed fluid decrease under the cooperation of the turbulent pipe 6 and the erosion 8, the harm of the mixed fluid sent from the outflow pipe 4 to subsequent equipment and the inner pipe caused by corrosion and the like is reduced, the pressure of the mixed fluid is not changed, and the pressure of the inner pipe is reduced, and the fluid is depressurized, meanwhile, the mixed fluid is depressurized, the mixed fluid has the effect of reducing the pressure and the solid-liquid is suitable for various fields.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Multiphase flow decompression baffling reduction gear, including inflow pipe (1), reducing pipe (2), dilatation pipe (3), outlet pipe (4), flange (5) and shutoff flange (9), its characterized in that: a disturbing pipe (6) is fixedly communicated between the inflow pipe (1) and the dilatation pipe (3), and the disturbing pipe (6) is used for dilatating mixed fluid entering the inflow pipe (1) and changing the fluid manifold;

the inner lower end of the expansion tube (3) is provided with an erosion material (8), the erosion material (8) is of a solid structure and is tightly installed with the inner wall of the expansion tube (3), and the erosion material (8) is used for colliding with a high-density medium in a mixed fluid to change the flow direction and the flow velocity.

2. The multiphase flow pressure reducing baffling reducer of claim 1, wherein: inflow pipe (1) reducing pipe (2) the dilatation pipe (3) flange (5) with shutoff flange (9) from the top down fixed connection in proper order forms, inflow pipe (1) reducing pipe (2) the interior cavity of dilatation pipe (3) communicates each other, outlet pipe (4) fixed intercommunication install in one side of dilatation pipe (3).

3. The multiphase flow pressure reducing baffling reducer of claim 1, wherein: the anti-abrasion device is characterized in that an abrasion-resistant inner tube (7) is fixedly arranged on the inner wall of a cavity, wherein the inner wall of the cavity is communicated with the upper end of the reducing tube (2) and the upper end of the dilatation tube (3), and the erosion material (8) is located below the abrasion-resistant inner tube (7).

4. The multiphase flow pressure reducing baffling reducer of claim 1, wherein: the erosion material (8) is recessed downwards against the flow direction of the mixed fluid to form a concave surface, a spherical surface or a plane.

5. The multiphase flow pressure reducing baffling reducer of claim 1, wherein: the height of the connecting port of the turbulent flow pipe (6) and the dilatation pipe (3) is positioned in the height range of the cavity of the outflow pipe (4).