CN113521814A

CN113521814A - Ultrahigh pressure cyclone desanding and separating device

Info

Publication number: CN113521814A
Application number: CN202110781423.1A
Authority: CN
Inventors: 张飞; 詹良斌; 董胜; 袁辉
Original assignee: Suzhou Douson Drilling & Production Equipment Co ltd
Current assignee: Suzhou Douson Drilling & Production Equipment Co ltd
Priority date: 2021-07-11
Filing date: 2021-07-11
Publication date: 2021-10-22

Abstract

The application discloses superhigh pressure whirl degritting separator includes: the outer surface of the mandrel is welded with a baffle; the cone cylinder is fixedly sleeved at one end of the mandrel, and a lining is embedded in the inner wall of the cone cylinder; the runner is used for removing sand and is arranged in the mandrel; the liquid enters the conical cylinder through the fluid inlet, so that tangential velocity can be obtained, solids can be automatically separated from gas through the rotational flow effect of the conical cylinder, the solids can be deposited below the conical cylinder, and then the liquid is discharged from the fluid outlet, so that the liquid, the solids and the gas can be automatically separated; the solids such as sand and the like obtained by separation are discharged from the bottom of the cone cylinder, and the separated gas and liquid are discharged from the upper part of the mandrel; when the rotational flow occurs, because the upper part of the device is cylindrical and the lower part is conical, the fluid passes through the inner surface of the cylinder and then reaches the inner surface of the cone, the fluid can realize high-speed rotation, and the work efficiency is improved while the sand removing effect is obvious.

Description

Ultrahigh pressure cyclone desanding and separating device

Technical Field

The invention belongs to the technical field of desanding and separating, and particularly relates to an ultrahigh-pressure cyclone desanding and separating device.

Background

In the process of petroleum and natural gas fracturing, particularly in the process of increasing the yield of unconventional oil gas through a fracturing construction process, sand exists in flowback fluid in the fracturing process; the ultrahigh pressure fluid carrying the sand is more serious in scouring downstream equipment, so that the sand in the fluid is very important to be removed; in current on-site desanding separation equipment, the weight of the desander is heavy;

in the prior art, a heavy and simple desanding and separating device is used, the desanding and separating efficiency is low, the workload of manually taking out the filter cartridge is large, and the online desanding function is difficult to realize; in the shale gas fracturing flowback process, the pressure in the well is higher (more than 70 MPa), and the fluid composition in the well is more complicated, and current conventional sand removal separator, the sand removal efficiency is lower, and the sand removal separation effect is also relatively poor simultaneously.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an ultrahigh pressure cyclone desanding and separating device.

In order to achieve the purpose, the invention adopts the following technical scheme:

an ultrahigh pressure cyclone desanding and separating device, comprising:

the outer surface of the mandrel is welded with a baffle;

the cone cylinder is fixedly sleeved at one end of the mandrel, and a lining is embedded in the inner wall of the cone cylinder; and

and the runner is arranged in the mandrel, and the two ends of the runner are respectively provided with a fluid inlet and a fluid outlet.

Preferably, the mandrel is of a monolithic structure, the upper half portion of the mandrel extends into the cone, and the lower half portion of the mandrel is located at the tail end of the cone.

Preferably, the number of the baffle plates is at least two, the baffle plates are symmetrically distributed on two sides of the mandrel, and each baffle plate comprises a baffle plate lifting part and a baffle plate rotation preventing part.

Preferably, the head end of the conical cylinder is provided with a circular truncated cone, and the conical cylinder is connected with the mandrel through a plurality of screws.

Preferably, a plurality of the screws and one end of the fluid inlet and outlet are positioned on the same side surface of the conical cylinder.

Preferably, the bushing and the cone are embedded by heat to form an integrated structure, and the inner diameter of the bushing is matched with that of the cone.

Preferably, the fluid inlet is arranged at a tangential position inside the conical cylinder, and the fluid inlet, the flow channel and the fluid outlet are communicated with each other and can be used for liquid rotational flow.

Preferably, the outer surface of the cone is sleeved with at least two groups of outer ring bodies, the outer ring bodies are sealed with external parts, and the cross sections of the outer ring bodies are O-shaped.

Compared with the prior art, the invention provides an ultrahigh pressure cyclone desanding and separating device, which has the following beneficial effects:

in the invention, when liquid enters the conical cylinder, tangential speed can be obtained through the fluid liquid inlet, solid can be automatically separated from gas under the cyclone action of the conical cylinder, the solid can be deposited below, and then the liquid is discharged from the fluid liquid outlet, thereby realizing automatic separation of the liquid, the solid and the gas;

the solids such as sand and the like obtained by separation are discharged from the bottom of the cone cylinder, and the separated gas and liquid are discharged from the upper part of the mandrel; when the rotational flow occurs, because the upper part of the device is cylindrical and the lower part is conical, the fluid passes through the inner surface of the cylinder and then reaches the inner surface of the cone, the fluid can realize high-speed rotation, and the work efficiency is improved while the sand removing effect is obvious.

Drawings

FIG. 1 is one of the front cross-sectional views of the overall structure of the present invention;

FIG. 2 is an elevational view of the overall construction of the present invention;

fig. 3 is a front sectional view of the overall structure of the present invention.

Reference numerals: 1. a mandrel; 2. a baffle plate; 21. a flapper lifting portion; 22. a baffle plate rotation prevention part; 3. a fluid inlet; 4. a screw; 5. a fluid outlet; 6. an outer ring body; 7. a bushing; 8. a cone.

Detailed Description

The following further describes a specific embodiment of the ultrahigh pressure cyclone desanding and separating device of the present invention with reference to fig. 1. The ultrahigh-pressure cyclone desanding and separating device of the invention is not limited to the description of the following embodiments.

This embodiment provides a concrete structure of superhigh pressure cyclone sand removal separator, as shown in fig. 1-3, a superhigh pressure cyclone sand removal separator includes:

the outer surface of the mandrel 1 is welded with a baffle 2;

the cone cylinder 8 is fixedly sleeved at one end of the mandrel 1, and a lining 7 is embedded in the inner wall of the cone cylinder 8; and

the runner for removing the sand is arranged in the mandrel 1, and two ends of the runner are respectively provided with a fluid inlet 3 and a fluid outlet 5.

By adopting the technical scheme:

in the invention, when liquid enters the conical cylinder 8, the liquid passes through the fluid liquid inlet 3 to obtain tangential velocity, solid can be automatically separated from gas under the cyclone action of the conical cylinder 8, the solid can be deposited below, and then the liquid is discharged from the fluid liquid outlet 5, thereby realizing the automatic separation of the liquid, the solid and the gas;

the solid such as sand obtained by separation is discharged from the bottom of the cone 8 (the bottom is positioned at the right side as shown in figure 1, and the bottom can be discharged by opening a cover with a screen arranged at the bottom of the cone 8), and the separated gas and liquid are discharged from the upper part of the mandrel 1;

when the rotational flow occurs, because the upper part of the device is cylindrical and the lower part is conical, the fluid passes through the inner surface of the cylinder and then reaches the inner surface of the cone, the fluid can realize high-speed rotation, and the work efficiency is improved while the sand removing effect is obvious.

The flow rate of the liquid over the cylindrical surface is much less than over the conical surface.

As shown in fig. 1 and 2, the mandrel 1 is a monolithic structure, and the upper half of the mandrel 1 extends into the cone 8, and the lower half is located at the tail end of the cone 8.

As shown in fig. 1 and 3, the number of the baffle plates 2 is at least two, and the baffle plates 2 are symmetrically distributed on two sides of the mandrel 1, and the baffle plates 2 comprise baffle lifting parts 21 and baffle rotation preventing parts 22.

Specifically, the number of the baffles 2 can be two, and the baffles 2 play a role in limiting.

As shown in fig. 1, the head end of the conical cylinder 8 is provided with a circular truncated cone, and the conical cylinder 8 is connected with the mandrel 1 through a plurality of screws 4; specifically, one end of the conical cylinder 8 can be a conical structure because the circular area formed by the conical cylinder is far smaller than that formed by the other end.

As shown in fig. 1, the plurality of screws 4 and one end of the fluid inlet and outlet are located on the same side of the conical cylinder 8.

The fluid inlet and outlet can respectively guide the liquid to enter and exit.

As shown in figures 1 and 2, the bushing 7 and the cone 8 are formed into an integral structure by hot embedding, and the inner diameter of the bushing 7 and the inner diameter of the cone 8 are matched with each other.

The bushing 7 is made of hard alloy with high hardness and good wear resistance, and can bear the scouring of high-speed fluid.

As shown in fig. 1, the fluid inlet 3 is disposed at a tangential position inside the conical cylinder 8, and the fluid inlet 3, the flow channel and the fluid outlet 5 are communicated with each other and can provide a swirling flow of the liquid.

As shown in fig. 1 and 2, the outer surface of the cone 1 is sleeved with at least two sets of outer ring bodies 6, and is sealed with external parts through the outer ring bodies 6, and the cross section of the outer ring body 6 is in an "O" shape.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The utility model provides an ultrahigh pressure cyclone sand removal separator which characterized in that includes:

the outer surface of the mandrel (1) is welded with a baffle (2);

the cone cylinder (8) is fixedly sleeved at one end of the mandrel (1), and a lining (7) is embedded in the inner wall of the cone cylinder (8); and

the runner for removing the sand is arranged in the mandrel (1), and the two ends of the runner are respectively provided with a fluid inlet (3) and a fluid outlet (5).

2. The ultra-high pressure cyclone sand-removing separator as claimed in claim 1, wherein: the mandrel (1) is of an integral structure, the upper half portion of the mandrel (1) extends into the conical cylinder (8), and the lower half portion of the mandrel is located at the tail end of the conical cylinder (8).

3. The ultra-high pressure cyclone sand-removing separator as claimed in claim 1, wherein: the number of baffle (2) has two sets at least to the symmetry formula distributes dabber (1) both sides, baffle (2) contain baffle lifting unit (21) and baffle rotation preventing unit (22).

4. The ultra-high pressure cyclone sand-removing separator as claimed in claim 1, wherein: the head end of the conical cylinder (8) is arranged to be in a circular truncated cone shape, and the conical cylinder (8) is connected with the mandrel (1) through a plurality of screws (4).

5. The ultra-high pressure cyclone sand-removing and separating device of claim 4, wherein: the plurality of screws (4) and one end of the fluid inlet and outlet are positioned on the same side surface of the conical cylinder (8).

6. The ultra-high pressure cyclone sand-removing separator as claimed in claim 1, wherein: the bushing (7) and the cone cylinder (8) are embedded by heat to form an integrated structure, and the inner diameter of the bushing (7) is matched with the inner diameter of the cone cylinder (8).

7. The ultra-high pressure cyclone sand-removing separator as claimed in claim 1, wherein: the fluid inlet (3) is arranged at a tangent position inside the conical cylinder (8), and the fluid inlet (3), the flow channel and the fluid outlet (5) are communicated with each other and can be used for liquid rotational flow.

8. The ultra-high pressure cyclone sand-removing separator as claimed in claim 1, wherein: the outer surface of the cone (1) is sleeved with at least two groups of outer ring bodies (6), the outer ring bodies (6) are sealed with external parts, and the cross sections of the outer ring bodies (6) are O-shaped.