Stirring device for production of slickwater fracturing fluid

Abstract

The utility model relates to the technical field of slickwater fracturing fluid production devices, and particularly discloses a stirring device for slickwater fracturing fluid production, which comprises a central rotating shaft, a stirring kettle and a functional shaft, the central rotating shaft is rotatably arranged in the stirring kettle, and the functional shaft is arranged in the central rotating shaft in a penetrating manner and can slide along the axial direction of the central rotating shaft; one ends of the stirring blades are arranged on the functional shaft, and the other ends of the stirring blades penetrate through the central rotating shaft and extend in the radial direction of the stirring kettle; the rotating assembly is used for driving the central rotating shaft to rotate; and the lifting assembly is used for driving the functional shaft to do linear reciprocating motion in the axial direction of the central rotating shaft. The stirring blades can be arranged at different horizontal heights to drive liquid to flow in the stirring kettle, so that the liquid stirring efficiency of the stirring kettle is effectively improved, the working time of the stirring kettle is shortened, and the production efficiency of slickwater fracturing fluid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a slick water fracturing fluid production device, in particular to a stirring device used for slick water fracturing fluid production. Background Art

[0002] Slippery water is a fracturing fluid system for hydraulic fracturing of shale oil and gas reservoirs and is one of the key fluids for shale gas development. 98.0% to 99.5% of the slippery water fracturing fluid is sand-mixed water, and additives generally account for 0.5% to 2.0% of the total volume of slippery water, including drag reducers, surfactants, scale inhibitors, clay stabilizers, and fungicides.

[0003] In the production of slick water fracturing fluid, sand mixing water and various additives need to be put into a mixing tank, and the various liquids are stirred and mixed by the stirring paddle built into the mixing tank.

[0004] However, in the existing mixing tank, the stirring paddle is fixed on the central rotating shaft, and the stirring paddle can only perform single stirring at a fixed horizontal height in the mixing tank. In order to ensure that various liquids in the slippery water are mixed evenly, the working time of the mixing tank needs to be extended, which reduces the production efficiency of the slippery water fracturing fluid. Utility Model Content

[0005] In view of the above problems, the utility model provides a stirring device for the production of slick water fracturing fluid, the purpose of which is to improve the stirring efficiency of the slick water fracturing fluid.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0007] Provided is a stirring device for the production of slick water fracturing fluid, comprising: a central rotating shaft and a stirring kettle, wherein the central rotating shaft is rotatably arranged in the stirring kettle, a functional shaft is passed through the central rotating shaft and can slide along the axial direction of the central rotating shaft; a plurality of stirring blades, one end of which is arranged on the functional shaft and the other end passes through the central rotating shaft and extends along the radial direction of the stirring kettle; a rotating assembly, which is used to drive the central rotating shaft to perform rotational motion; and a lifting assembly, which is used to drive the functional shaft to perform linear reciprocating motion along the axial direction of the central rotating shaft.

[0008] Furthermore, the lifting assembly includes: a connecting rod, which is rotatably connected to the functional shaft; a mounting plate, which is horizontally mounted on the end of the connecting rod away from the functional shaft; a mounting rod, which is vertically arranged on the mixing kettle and passes through the mounting plate; a limit block, which is arranged on the mounting rod and is located on both sides of the mounting plate; a spring, which is sleeved on the mounting rod and is located on the side of the mounting plate away from the mixing kettle; and a telescopic component, which is arranged between the mixing kettle and the mounting plate.

[0009] Furthermore, a rubber pad is provided on the piston rod of the telescopic component for contacting the mounting plate.

[0010] Furthermore, the device also includes: a connecting shaft, one end of which is connected to the central rotating shaft, and the other end is connected to the stirring blade; a slide groove, which is opened on the central rotating shaft along the axial direction of the central rotating shaft for the connecting shaft to pass through.

[0011] Furthermore, a plurality of stirring blades are installed in an array along the axial direction of the central rotating shaft.

[0012] Furthermore, the stirring blade is installed at a fixed angle inclined to the horizontal plane.

[0013] The beneficial effects of the utility model are as follows: the driving component drives the central rotating shaft to rotate, which can drive the stirring blades to rotate, so as to stir and mix the liquid in the stirring kettle; the lifting component can drive the functional shaft to make a linear reciprocating motion along the axial direction of the central rotating shaft, so as to drive the stirring blades to slide along the axial direction of the central rotating shaft, and place the stirring blades at different horizontal heights; it can drive the liquid to flow in the stirring kettle, effectively improve the stirring efficiency of the stirring kettle for the liquid, shorten the working time of the stirring kettle, and improve the production efficiency of the slippery water fracturing fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the stirring device provided in an embodiment of the present application.

[0015] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A.

[0016] Figure 3 A side view of the installation of the stirring blade and the central shaft provided in an embodiment of the present application.

[0017] Among them, 1. stirring kettle; 11. central rotating shaft; 12. stirring blade; 2. functional shaft; 3. rotating assembly; 4. lifting assembly; 41. connecting rod; 42. mounting plate; 43. mounting rod; 44. limiting block; 45. spring; 46. telescopic component; 47. rubber pad; 51. connecting shaft; 52. slide groove. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Reference Figure 1As shown, the embodiment of the present application discloses a stirring device for the production of slick water fracturing fluid, comprising: a central rotating shaft 11 and a stirring tank 1, the central rotating shaft 11 is rotatably arranged in the stirring tank 1, a functional shaft 2 is passed through the central rotating shaft 11, and can slide along the axial direction of the central rotating shaft 11; a plurality of stirring blades 12, one end of which is arranged on the functional shaft 2, and the other end passes through the central rotating shaft 11 and extends along the radial direction of the stirring tank 1; a rotating component 3, used to drive the central rotating shaft 11 to perform rotational motion; a lifting component 4, used to drive the functional shaft 2 to perform linear reciprocating motion along the axial direction of the central rotating shaft 11.

[0020] During specific use, the driving component drives the central rotating shaft 11 to rotate, which can drive the stirring blades 12 to rotate, so as to stir and mix the liquid in the stirring tank 1; at the same time, the lifting component 4 works synchronously, which can drive the functional shaft 2 to make a linear reciprocating motion along the axial direction of the central rotating shaft 11, so as to drive the stirring blades 12 to slide along the axial direction of the central rotating shaft 11, and place the stirring blades 12 at different horizontal heights.

[0021] It is worth mentioning that the mixing tank 1 is connected to multiple liquid storage tanks through pipes, and the multiple liquid storage tanks can respectively store sand mixing water, resistance reducing agent, surfactant, scale inhibitor, clay stabilizer and bactericide, etc.

[0022] In the utility model, through the coordinated operation of the rotating component 3 and the lifting component 4, the stirring blades 12 can be driven to stir the liquid at different horizontal heights, and the liquid can be driven to flow in the stirring tank 1; by using the utility model, the stirring efficiency of the stirring tank 1 for the liquid can be effectively improved, the working time of the stirring tank 1 can be shortened, and the production efficiency of the slippery water fracturing fluid can be improved.

[0023] It is worth mentioning that the rotating assembly 3 includes: a driving motor and a bevel gear. The output shaft of the driving motor is connected to the central rotating shaft 11 through the bevel gear. The central rotating shaft 11 can be driven to rotate by rotating the output shaft of the driving motor.

[0024] Specifically, the lifting assembly 4 includes: a connecting rod 41, which is rotatably connected to the functional shaft 2; a mounting plate 42, which is horizontally mounted on the end of the connecting rod 41 away from the functional shaft 2; a mounting rod 43, which is vertically arranged on the mixing kettle 1 and passes through the mounting plate 42; a limit block 44, which is arranged on the mounting rod 43 and is located on both sides of the mounting plate 42; a spring 45, which is sleeved on the mounting rod 43 and is located on the side of the mounting plate 42 away from the mixing kettle 1; and a telescopic component 46, which is arranged between the mixing kettle 1 and the mounting plate 42.

[0025] Specifically, the main body of the telescopic component 46 is disposed on the stirring kettle 1 , and the piston rod of the telescopic component 46 is used to lift the mounting plate 42 .

[0026] During specific use, the piston rod of the telescopic component 46 intermittently extends, so that the mounting plate 42 can be moved upward in the direction away from the stirring kettle 1, and the spring 45 is squeezed, thereby driving the stirring blade 12 to rise in the axial direction of the central rotating shaft 11; the piston rod of the telescopic component 46 intermittently shortens, and the spring 45 extends, and under the action of the spring 45, the mounting plate 42 can be moved downward in the direction close to the stirring kettle 1, thereby driving the stirring blade 12 to descend in the axial direction of the central rotating shaft 11.

[0027] It can be understood that the central shaft 11 can be rotatably mounted on the stirring kettle 1 via a bearing, and the connecting rod 41 and the functional shaft 2 can also be rotatably connected via a bearing; the telescopic component 46 can be a cylinder or an electric telescopic rod.

[0028] Reference Figure 2 As shown, a rubber pad 47 is provided on the piston rod of the telescopic component 46 for contacting the mounting plate 42 , so as to flexibly connect the piston rod and the mounting plate 42 to prevent the mounting plate 42 from being damaged by impact.

[0029] Furthermore, the device also includes: a connecting shaft 51, one end of which is connected to the central rotating shaft 11, and the other end is connected to the stirring blade 12; a slide groove 52, which is opened on the central rotating shaft 11 along the axial direction of the central rotating shaft 11, for the connecting shaft 51 to pass through.

[0030] Furthermore, a plurality of stirring blades 12 are installed in an array along the axial direction of the central rotating shaft 11 , which can further increase the coverage area of ​​the stirring blades 12 along the axial direction of the central rotating shaft 11 and improve the stirring efficiency.

[0031] Reference Figure 3 As shown, the stirring blade 12 is installed at a fixed angle inclined to the horizontal plane. During the rotation of the stirring blade 12 , the liquid can be lifted upward in the vertical direction, further promoting the liquid to flow in the stirring tank 1 and improving the stirring efficiency of the stirring tank 1 .

[0032] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the claims of the present invention, the present invention is also intended to include these modifications and variations.

Claims

1. A stirring device for producing slick water fracturing fluid, comprising: The central rotating shaft (11) and the stirring tank (1), wherein the central rotating shaft (11) is rotatably arranged in the stirring tank (1), characterized in that it also includes: The functional shaft (2) is inserted into the central rotating shaft (11) and is capable of sliding along the axial direction of the central rotating shaft (11); A plurality of stirring blades (12), one end of which is arranged on the functional shaft (2), and the other end of which passes through the central rotating shaft (11) and extends along the radial direction of the stirring tank (1); A rotating assembly (3) for driving the central rotating shaft (11) to perform a rotating motion; The lifting assembly (4) is used to drive the functional shaft (2) to perform linear reciprocating motion along the axial direction of the central rotating shaft (11).

2. The stirring device for producing slick water fracturing fluid according to claim 1, characterized in that: The lifting assembly (4) comprises: A connecting rod (41) rotatably connected to the functional shaft (2); A mounting plate (42) is horizontally mounted on an end of the connecting rod (41) away from the functional axis (2); A mounting rod (43) is vertically arranged on the stirring kettle (1) and passes through the mounting plate (42); Limiting blocks (44) are arranged on the mounting rod (43) and are located on both sides of the mounting plate (42); A spring (45) is sleeved on the mounting rod (43) and is located on a side of the mounting plate (42) away from the stirring kettle (1); The telescopic component (46) is arranged between the stirring tank (1) and the mounting plate (42).

3. The stirring device for producing slick water fracturing fluid according to claim 2, characterized in that: A rubber pad (47) is provided on the piston rod of the telescopic component (46) for contacting the mounting plate (42).

4. The stirring device for producing slick water fracturing fluid according to claim 1, characterized in that: Also includes: A connecting shaft (51), one end of which is connected to the central rotating shaft (11) and the other end of which is connected to the stirring blade (12); The slide groove (52) is formed on the central rotating shaft (11) along the axial direction of the central rotating shaft (11) for the connecting shaft (51) to pass through.

5. The stirring device for producing slick water fracturing fluid according to claim 1, characterized in that: A plurality of stirring blades (12) are installed in an array along the axial direction of the central rotating shaft (11).

6. The stirring device for producing slick water fracturing fluid according to claim 1, characterized in that: The stirring blade (12) is installed at a fixed angle inclined to the horizontal plane.

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