Petroleum fracturing fluid mixing device

Abstract

The utility model relates to the technical field of oil exploitation, and discloses an oil fracturing fluid mixing device which comprises a bottom plate, the bottom plate is arranged on the ground and keeps stable, a mixing tank body is arranged above the bottom plate, a feeding pipe and a mixing shaft structure are arranged on the top face of the mixing tank body, and the mixing shaft structure is arranged in the mixing tank body and used for conveying liquid to be mixed. The powder crushing structure is arranged above the mixing tank body and used for crushing powder, the powder crushing structure comprises a first material pouring port, a screw pump, a crushing box and a rotary blade, the bottom surface of the first material pouring port is fixedly connected with the wall surface of the screw pump, the crushing box is connected with the screw pump, the rotary blade and an intermittent powder feeding device are arranged in the crushing box, and the intermittent powder feeding device is connected with the screw pump. The intermittent powder feeding device is arranged below the powder crushing structure and used for conveying powder, the powder receiving tank receives the powder back and forth, the powder intermittently enters the mixing tank body, guanidine gum powder is placed while being stirred, the guanidine gum powder is fully mixed, and the mixing efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil extraction, and specifically relates to an oil fracturing fluid mixing device. Background Art

[0002] The oil fracturing fluid mixing device is an essential key device in the fracturing construction of oil and gas fields, and its design and functions are of great significance for improving the fracturing construction efficiency, reducing labor intensity, and reducing environmental pollution.

[0003] The prior art discloses an oil fracturing fluid mixing device (CN220496136U), which belongs to the field of fracturing fluid mixing. The oil fracturing fluid mixing device includes a mixing tank body. A gear box is fixedly installed at the top end of the mixing tank body. A feed pipe is fixedly arranged at the top end of the mixing tank body. A mixing shaft is installed inside the mixing tank body through a bearing. One end of the mixing shaft extends to the outside of the top end of the gear box through a through groove. A liquid inlet cavity is arranged inside the mixing shaft. A liquid inlet pipe quick connector is arranged at one end of the mixing shaft. Mixing paddles are evenly and fixedly installed on the outer wall of the mixing shaft. Liquid inlet holes are evenly arranged on the outer wall of the mixing shaft. A bevel gear one is fixedly installed on the outer wall of the mixing shaft. The bevel gear one is located inside the gear box. It can directly transport the base liquid to the bottom end inside the device, so that it is evenly and fully mixed with the additive powder material, and at the same time, the caked additive powder material can be broken, thereby improving the mixing effect and efficiency of the fracturing fluid.

[0004] The prior art uses a crushing roller to crush the caked guar gum powder. It is easy for the powder to adhere to the crushing roller, and the open crushing environment makes the guar gum powder easy to be blown away during the crushing process, resulting in waste of the guar gum powder. Secondly, the guar gum powder is directly poured into the mixing tank body and only stays above the liquid, which is not conducive to full mixing.

[0005] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0006] To solve the above technical problems of waste of guar gum powder and unfavorable full mixing of guar gum powder, the basic concept of the technical solution adopted by the present utility model is: an oil fracturing fluid mixing device, including

[0007] The bottom plate is placed on the ground to keep stable. A mixing tank body is arranged above the bottom plate. A feed pipe is arranged on the top surface of the mixing tank body;

[0008] The mixing shaft structure is arranged inside the mixing tank body for transporting and mixing liquids;

[0009] The powder crushing structure is arranged above the mixing tank body for crushing powder. The powder crushing structure includes a first discharging port, a screw pump, a crushing box and a rotating blade. The bottom surface of the first discharging port is fixedly connected to the wall surface of the screw pump. The crushing box is connected to the screw pump, and a rotating blade is arranged inside the crushing box;

[0010] The intermittent powder feeding device is arranged below the powder crushing structure for conveying powder. The intermittent powder feeding device includes a U-shaped plate, a powder receiving tank, a lead screw and a reciprocating block. A sliding plate is arranged in the middle of the U-shaped plate. A round hole is opened on the top surface of the sliding plate. A powder receiving tank is arranged below the round hole, and the top surface of the powder receiving tank is fixedly connected to the bottom surface of the sliding plate. The lead screw is threadedly connected to the U-shaped plate. The top surface of the reciprocating block is fixedly connected to the bottom surface of the sliding plate. A threaded hole is opened on one side of the reciprocating block, and the lead screw passes through the threaded hole and is threadedly connected to the reciprocating block.

[0011] As a preferred embodiment of the present utility model, the powder crushing structure further includes a powder box and a first servo motor. The crushing box is arranged inside the powder box. An inlet is opened on one side of the crushing box. The output end of the screw pump passes through one side of the powder box and is fixedly connected to the inlet. The screw pump is fixedly connected to the powder box. A first servo motor for driving the rotating blade to rotate is installed on the other side of the powder box through a bracket. The rotating shaft of the first servo motor is fixedly connected to the rotating blade. A plurality of filtering holes are opened on the wall surface of the crushing box.

[0012] As a preferred embodiment of the present utility model, the overall shape of the powder box is a combination of a sector and an inverted frustum of a pyramid. The inside of the powder box is hollow and an outlet is opened at the bottom.

[0013] As a preferred embodiment of the present utility model, the intermittent powder feeding device further includes a bottom cover and a fixing plate. The fixing plate is arranged on one side of the powder receiving tank, and the side surface of the fixing plate is fixedly connected to the side surface of the powder receiving tank. The top surface of the fixing plate is fixedly connected to the bottom surface of the sliding plate. The bottom cover is hinged to the powder receiving tank. One end of the lead screw is provided with a third servo motor. A threaded hole is opened on one side of the U-shaped plate. The third servo motor is fixedly installed on one side of the U-shaped plate through a bracket. One end of the lead screw passes through the threaded hole and is fixedly connected to the rotating shaft of the third servo motor.

[0014] As a preferred embodiment of the present utility model, the intermittent powder feeding device further includes a pressing cover plate. The U-shaped plate is in a U shape. A sliding groove is opened on each of the two opposite inner wall surfaces of the U-shaped plate. Both sides of the sliding plate are slidably connected to the sliding grooves. The bottom surface of one side of the U-shaped plate is fixedly connected to the top surface of the pressing cover plate. The overall shape of the pressing cover plate is in an L shape, and the pressing cover plate can press against the bottom cover to close the bottom cover.

[0015] As a preferred embodiment of the present utility model, the U-shaped plate is fixedly installed on the top surface of the mixing tank through a bracket, and the powder box is fixedly installed above the U-shaped plate through a bracket.

[0016] As a preferred embodiment of the present utility model, a support frame is fixedly connected to the top surface of the bottom plate, the mixing tank is fixedly connected to the support frame, a second discharging port is provided on the top surface of the mixing tank, the bottom surface of the feeding pipe is fixedly connected to the second discharging port, a liquid outlet pipe is connected to the bottom surface of the mixing tank, a water valve is installed on the wall surface of the liquid outlet pipe, and a liquid receiving box is placed below the liquid outlet pipe.

[0017] As a preferred embodiment of the present utility model, the powder crushing structure further includes an output port. The inside of the output port is hollow and penetrates through the upper and lower surfaces for conveying the crushed powder. The top surface of the output port is fixedly connected to the discharge port, and the bottom surface of the output port faces and is close to the round hole of the sliding plate.

[0018] The present utility model has the following beneficial effects compared with the prior art:

[0019] 1. The powder is intermittently fed into the mixing tank by the powder receiving tank making round trips to realize placing the guar gum powder while stirring, so that the guar gum powder is fully mixed and the mixing efficiency is higher.

[0020] 2. The crushed guar gum powder enters the powder box through the filter holes and finally slides into the output port. The method of using a rotating blade to break the powder in a closed environment will not cause the guar gum powder to be blown away by the wind and wasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the powder crushing structure of the present utility model;

[0024] Figure 3 is of the present utility model Figure 2 an enlarged schematic diagram at A;

[0025] Figure 4 is a schematic diagram of the crushing structure of the present utility model;

[0026] Figure 5 is a schematic diagram of the intermittent powder feeding device structure of the present utility model;

[0027] Figure 6 is a schematic diagram of the mixing tank structure of the present utility model.

[0028] In the figure: 1, bottom plate; 2, support frame; 3, mixing tank body; 4, mixing shaft structure; 5, powder box; 6, screw pump; 7, first pouring port; 8, output port; 9, U-shaped plate; 10, first servo motor; 11, powder receiving tank; 12, pressing cover plate; 13, sliding plate; 14, crushing box; 15, rotary blade; 16, bottom cover; 17, fixing plate; 18, lead screw; 19, reciprocating block; 20, feed pipe. Detailed implementation mode

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0030] A device for mixing petroleum fracturing fluid, as Figure 1 and Figure 6 shown, there is a bottom plate 1. The bottom plate 1 is placed on the ground to keep stable. Above the bottom plate 1, there is a mixing tank body 3. On the top surface of the mixing tank body 3, there are a feed pipe 20 and a mixing shaft structure 4. The mixing shaft structure 4 is arranged inside the mixing tank body 3 to transport and mix liquids. The mixing shaft structure 4 includes: gear box, feed pipe, mixing shaft, liquid inlet chamber, quick connector for liquid inlet pipe, mixing paddle, liquid inlet hole, bevel gear 1, bevel gear 2, driven shaft, linkage shaft, driving motor. On the top surface of the bottom plate 1, there is a fixedly connected support frame 2. The mixing tank body 3 is fixedly connected with the support frame 2. On the top surface of the mixing tank body 3, there is a second pouring port. The bottom surface of the feed pipe 20 is fixedly connected with the second pouring port. A liquid outlet pipe is connected to the bottom surface of the mixing tank body 3. A water valve is installed on the wall surface of the liquid outlet pipe. A liquid receiving box is placed below the liquid outlet pipe.

[0031] The mixed fracturing fluid is received in the liquid receiving box by opening the water valve on the wall surface of the liquid outlet pipe. The mixing shaft structure 4 has been detailedly disclosed in a prior art device for mixing petroleum fracturing fluid CN220496136U, and will not be elaborated here.

[0032] A device for mixing petroleum fracturing fluid, as Figure 1 and Figure 4As shown in the figure, there is a powder crushing structure, which is arranged above the mixing tank body 3 for crushing powder. The powder crushing structure includes a first discharging port 7, a screw pump 6, a crushing box 14 and a rotary blade 15. The bottom surface of the first discharging port 7 is fixedly connected to the wall surface of the screw pump 6. The crushing box 14 is connected to the screw pump 6. A rotary blade 15 is arranged inside the crushing box 14. The powder crushing structure further includes a powder box 5 and a first servo motor 10. The crushing box 14 is arranged inside the powder box 5. An inlet is provided on one side of the crushing box 14. The output end of the screw pump 6 passes through one side of the powder box 5 and is fixedly connected to the inlet. The screw pump 6 is fixedly connected to the powder box 5. A first servo motor 10 for driving the rotary blade 15 to rotate is installed on the other side of the powder box 5 through a bracket. The rotating shaft of the first servo motor 10 is fixedly connected to the rotary blade 15. A number of filter holes are provided on the wall surface of the crushing box 14, and the filter holes are distributed in a ring shape. The overall shape of the powder box 5 is a combination of a sector and an inverted frustum of a pyramid. The inside of the powder box 5 is hollow and an outlet is provided at the bottom. The U-shaped plate 9 is fixedly installed on the top surface of the mixing tank body 3 through a bracket. The powder box 5 is fixedly installed above the U-shaped plate 9 through a bracket. The powder crushing structure further includes an outlet 8. The inside of the outlet 8 is hollow and penetrates through the upper and lower surfaces for conveying the crushed powder. The top surface of the outlet 8 is fixedly connected to the outlet. The bottom surface of the outlet 8 is directly opposite to and closely adheres to the round hole of the sliding plate 13.

[0033] Turn on the power of the screw pump 6, pour the guar gum powder into the first discharging port 7, the screw pump 6 conveys the guar gum powder to the crushing box 14, turn on the power of the first servo motor 10, the first servo motor 10 drives the rotary blade 15 to rotate, the agglomerated guar gum powder is crushed, the crushed guar gum powder enters the powder box 5 through the filter holes, and finally slides into the outlet 8. Using the method of using the rotary blade 15 to break the powder in a closed environment will not let the guar gum powder be blown away by the wind and cause waste.

[0034] An oil fracturing fluid mixing device, as Figure 1 、 Figure 2 、 Figure 3 and Figure 5As shown, an intermittent powder feeding device is arranged below the powder crushing structure for transporting powder. The intermittent powder feeding device includes a U-shaped plate 9, a powder receiving tank 11, a lead screw 18, and a reciprocating block 19. A sliding plate 13 is arranged in the middle of the U-shaped plate 9. A round hole is opened on the top surface of the sliding plate 13. Below the round hole is arranged the powder receiving tank 11, and the top surface of the powder receiving tank 11 is fixedly connected to the bottom surface of the sliding plate 13. The lead screw 18 is threadedly connected to the U-shaped plate 9. The top surface of the reciprocating block 19 is fixedly connected to the bottom surface of the sliding plate 13. A threaded hole is opened on one side of the reciprocating block 19, and the lead screw 18 passes through the threaded hole and is threadedly connected to the reciprocating block 19. The intermittent powder feeding device further includes a bottom cover 16 and a fixing plate 17. The fixing plate 17 is arranged on one side of the powder receiving tank 11, and the side surface of the fixing plate 17 is fixedly connected to the side surface of the powder receiving tank 11. The top surface of the fixing plate 17 is fixedly connected to the bottom surface of the sliding plate 13. The bottom cover 16 is hinged to the powder tank 11. One end of the lead screw 18 is provided with a third servo motor. A threaded hole is opened on one side of the U-shaped plate 9. The third servo motor is fixed on one side of the U-shaped plate 9 through a bracket. One end of the lead screw 18 passes through the threaded hole and is fixedly connected to the rotating shaft of the third servo motor. The intermittent powder feeding device further includes a pressing cover plate 12. The U-shaped plate 9 is in a U shape. Each of the two opposite inner wall surfaces of the U-shaped plate 9 is provided with a sliding groove. The two sides of the sliding plate 13 are slidably connected to the sliding grooves. The bottom surface of one side of the U-shaped plate 9 is fixedly connected to the top surface of the pressing cover plate 12. The overall shape of the pressing cover plate 12 is in an L shape. The pressing cover plate 12 can press against the bottom cover 16 to close the bottom cover 16. The powder crushing structure further includes an output port 8. The inside of the output port 8 is hollow and penetrates through the upper and lower surfaces for transporting the crushed powder. The top surface of the output port 8 is fixedly connected to the discharge port. The bottom surface of the output port 8 is directly opposite to and closely adheres to the round hole of the sliding plate 13.

[0035] The guar gum powder in the output port 8 falls into the powder receiving tank 11 through the round hole of 13. Turn on the power supply of the third servo motor. The third servo motor is a forward and reverse servo motor. The third servo motor drives the lead screw 18 to rotate. The reciprocating block 19 drives the sliding plate 13 to move. The sliding plate 13 drives the powder receiving tank 11 and the bottom cover 16 to move. When the powder receiving tank 11 and the bottom cover 16 move to a range where they cannot be touched by the pressing cover plate 12, the sliding plate 13 will block the output port 8, and the guar gum powder in the output port 8 will not fall out. The bottom cover 16 will open due to gravity. The feed pipe 20 is arranged below and its height is just right to directly reach the guar gum powder. The guar gum powder in the powder receiving tank 11 falls into the mixing tank body 3 through the feed pipe 20. Then control the third servo motor to rotate in the reverse direction, and the bottom cover 16 is re-closed by the pressing cover plate 12. The sliding plate 13 continues to move the powder receiving tank 11 to below the round hole. Through the powder receiving tank 11 receiving powder back and forth, the powder enters the mixing tank body 3 intermittently, realizing placing the guar gum powder while stirring, making the guar gum powder fully mixed, and the mixing efficiency is higher.

[0036] Working principle of the utility model: The mixed fracturing fluid is connected to the liquid receiving box by opening the water valve on the wall surface of the liquid outlet pipe. The power supply of the screw pump 6 is turned on, and the guar gum powder is poured into the first feeding port 7. The screw pump 6 transports the guar gum powder to the crushing box 14. The power supply of the first servo motor 10 is turned on, and the first servo motor 10 drives the rotating blade 15 to rotate. The agglomerated guar gum powder is crushed, and the crushed guar gum powder enters the powder box 5 through the filter holes and finally slides to the output port 8. The method of using the rotating blade 15 to break the powder in a closed environment will not cause the guar gum powder to be blown away by the wind and wasted. The guar gum powder at the output port 8 falls into the powder receiving tank 11 through the round hole of 13. The power supply of the third servo motor is turned on. The third servo motor is a forward and reverse servo motor. The third servo motor drives the lead screw 18 to rotate, and the reciprocating block 19 drives the sliding plate 13 to move. The sliding plate 13 drives the powder receiving tank 11 and the bottom cover 16 to move. When the powder receiving tank 11 and the bottom cover 16 move to a range where they cannot be in contact with the abutting cover plate 12, the sliding plate 13 will block the output port 8, and the guar gum powder in the output port 8 will not fall out. The bottom cover 16 will open due to gravity. The feeding pipe 20 is arranged below and its height is just right to directly reach the guar gum powder. The guar gum powder in the powder receiving tank 11 falls into the mixing tank body 3 through the feeding pipe 20. Then, the third servo motor is controlled to rotate in the reverse direction, and the bottom cover 16 is re-closed by the abutting cover plate 12. The sliding plate 13 continues to move the powder receiving tank 11 below the round hole. The powder receiving tank 11 receives powder back and forth, and the powder intermittently enters the mixing tank body 3, realizing placing the guar gum powder while stirring, making the guar gum powder fully mixed and the mixing efficiency higher.

[0037] It can be understood that the utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A petroleum fracturing fluid mixing device, characterized in that: include A bottom plate (1), the bottom plate (1) is placed on the ground to keep it stable, a mixing tank body (3) is arranged above the bottom plate (1), and a feed pipe (20) is arranged on the top surface of the mixing tank body (3); A mixing shaft structure (4), the mixing shaft structure (4) is arranged inside the mixing tank (3) and is used to transport liquids for mixing; A powder crushing structure, the powder crushing structure is arranged above the mixing tank (3) and is used to crush the powder, the powder crushing structure comprises a first pouring port (7), a screw pump (6), a crushing box (14) and a rotating blade (15), the bottom surface of the first pouring port (7) is fixedly connected to the wall surface of the screw pump (6), the crushing box (14) is connected to the screw pump (6), and the interior of the crushing box (14) is provided with a rotating blade (15); An intermittent powder feeding device is arranged below the powder crushing structure for conveying powder. The intermittent powder feeding device comprises a U-shaped plate (9), a powder receiving tank (11), a screw rod (18) and a reciprocating block (19). A sliding plate (13) is arranged in the middle of the U-shaped plate (9). A round hole is provided on the top surface of the sliding plate (13). A powder receiving tank (11) is arranged below the round hole and the top surface of the powder receiving tank (11) is fixedly connected to the bottom surface of the sliding plate (13). The screw rod (18) is threadedly connected to the U-shaped plate (9). The top surface of the reciprocating block (19) is fixedly connected to the bottom surface of the sliding plate (13). A threaded hole is provided on one side of the reciprocating block (19). The screw rod (18) passes through the threaded hole and is threadedly connected to the reciprocating block (19).

2. The petroleum fracturing fluid mixing device according to claim 1, characterized in that: The powder crushing structure also includes a powder box (5) and a first servo motor (10). The crushing box (14) is arranged inside the powder box (5). A feed port is provided on one side of the crushing box (14). The output end of the screw pump (6) passes through one side of the powder box (5) and is fixedly connected to the feed port. The screw pump (6) is fixedly connected to the powder box (5). A first servo motor (10) for driving a rotating blade (15) to rotate is installed on the other side of the powder box (5) through a bracket. The rotating shaft of the first servo motor (10) is fixedly connected to the rotating blade (15). A plurality of filtering holes are provided on the wall of the crushing box (14).

3. The petroleum fracturing fluid mixing device according to claim 2, characterized in that: The overall shape of the powder box (5) is a combination of a fan and an inverted quadrangular pyramid; the interior of the powder box (5) is hollow and a discharge port is provided at the bottom.

4. The petroleum fracturing fluid mixing device according to claim 1, characterized in that: The intermittent powder feeding device further comprises a bottom cover (16) and a fixed plate (17); the fixed plate (17) is arranged on one side of the powder receiving tank (11) and the side surface of the fixed plate (17) is fixedly connected to the side surface of the powder receiving tank (11); the top surface of the fixed plate (17) is fixedly connected to the bottom surface of the sliding plate (13); the bottom cover (16) is connected to the powder tank (11) by a hinge; a third servo motor is arranged at one end of the screw rod (18); a threaded hole is provided at one side of the U-shaped plate (9); the third servo motor is fixed to one side of the U-shaped plate (9) by a bracket; and one end of the screw rod (18) passes through the threaded hole and is fixedly connected to the rotating shaft of the third servo motor.

5. The petroleum fracturing fluid mixing device according to claim 4, characterized in that: The intermittent powder feeding device also includes a cover plate (12), the U-shaped plate (9) is in a U-shape, two opposite inner wall surfaces of the U-shaped plate (9) are each provided with a sliding groove, two sides of the sliding plate (13) are slidably connected to the sliding groove, a bottom surface of one side of the U-shaped plate (9) is fixedly connected to a top surface of the cover plate (12), the overall shape of the cover plate (12) is L-shaped, and the cover plate (12) can abut against the bottom cover (16) to close the bottom cover (16).

6. The petroleum fracturing fluid mixing device according to claim 3, characterized in that: The U-shaped plate (9) is fixedly mounted on the top surface of the mixing tank (3) via a bracket, and the powder box (5) is fixedly mounted above the U-shaped plate (9) via a bracket.

7. The petroleum fracturing fluid mixing device according to claim 1, characterized in that: The top surface of the bottom plate (1) is fixedly connected to a support frame (2), the mixing tank body (3) is fixedly connected to the support frame (2), a second pouring port is provided on the top surface of the mixing tank body (3), the bottom surface of the feed pipe (20) is fixedly connected to the second pouring port, the bottom surface of the mixing tank body (3) is connected to a liquid outlet pipe, a water valve is installed on the wall surface of the liquid outlet pipe, and a liquid receiving box is placed below the liquid outlet pipe.

8. The petroleum fracturing fluid mixing device according to claim 3, characterized in that: The powder crushing structure also includes an output port (8), the interior of the output port (8) is hollow and penetrated from top to bottom for conveying crushed powder, the top surface of the output port (8) is fixedly connected to the discharge port, and the bottom surface of the output port (8) faces the circular hole of the sliding plate (13) and is in close contact with the circular hole of the sliding plate (13).

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