Anti-blocking sand adding device for shale oil and gas fracturing system

Abstract

The utility model relates to the technical field of shale oil and gas equipment, and discloses an anti-blocking type sand adding device for a shale oil and gas fracturing system, which comprises a mixing barrel, a funnel frame is fixedly connected to the upper surface of the mixing barrel, a fixing frame is fixedly connected to the interior of the funnel frame, a roller ball is arranged in the fixing frame, and a sand adding device is arranged in the mixing barrel. A connecting shaft is fixedly connected to the side wall of the roller bead, an extrusion block is fixedly connected to one end of the connecting shaft, a sealing cover is fixedly connected to the interior of the mixing barrel, a first motor is arranged in the sealing cover, a rotating column is fixedly connected to the output end of the first motor, and a connecting column is fixedly connected to the upper surface of the rotating column. According to the sand adding device, through the cooperation of the funnel frame, the fixing frame, the roller bead, the connecting shaft, the extrusion block, the sealing cover, the first motor, the rotating column and the connecting column, the effect of extruding and crushing sand is achieved, and the problems that part of sand adding devices are single in feeding port structure and blocking of the feeding ports can occur are solved; by means of the structure, the situation that the feeding port is blocked is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shale oil and gas equipment, in particular to an anti-clogging sand adding device for a shale oil and gas fracturing system. Background Art

[0002] The shale oil and gas fracturing system is an engineering technology system used to exploit shale oil and gas resources, of which hydraulic fracturing technology is its core part. When hydraulic fracturing is carried out in shale rock formations, it usually involves injecting liquid (usually a mixture of water and additives) into the wellbore, while carrying sand or other solid particles to increase the fracturing effect of the fracturing fluid. These solid particles are called "fracturing sand" or simply sand. In order to prevent blockage during the sand addition process and ensure the smooth progress of the fracturing operation, anti-blocking sand addition devices are often used for sand addition.

[0003] The Chinese patent document with the search announcement number CN217725263U discloses a sand adding device for shale oil and gas fracturing system, including a mixing box, a feed port is arranged at the upper end of the mixing box, a stirring structure is also arranged in the mixing box, the stirring structure includes a stirring shaft, a spiral stirring blade is arranged on the stirring shaft, a second stirring blade is also arranged at the lower end of the stirring shaft, the second stirring blade is close to the bottom wall of the mixing box, the second stirring blade is in the shape of a strip and is arranged horizontally and tilted, a material lifting structure is also arranged in the mixing box, the material lifting structure includes a circular plate, the plate is connected to the top plate of the mixing box through a telescopic structure, and a discharging structure is also arranged at the lower end of the mixing box. The utility model is provided with a second stirring blade to facilitate the stirring and lifting of the sand material at the bottom, and the material lifting of the plate and the stirring of the spiral stirring blade are coordinated to efficiently achieve the uniform stirring of the sand material and the mixed liquid; on the other hand, a rotating rod is arranged in the discharging structure to facilitate the rotation and unblocking of the pipeline when the pipeline is blocked, but the patent does not take into account the single structure of the feed port, which may cause the feed port to be blocked. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an anti-clogging sand adding device for a shale oil and gas fracturing system, aiming to improve the problem of some anti-clogging sand adding devices having a single feed port structure and causing feed port clogging.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-clogging sand-adding device for a shale oil and gas fracturing system, comprising a mixing barrel, a funnel frame fixedly connected to the upper surface of the mixing barrel, a fixing frame fixedly connected to the inside of the funnel frame, a roller ball arranged inside the fixing frame, a connecting shaft fixedly connected to the side wall of the roller ball, an extrusion block fixedly connected to one end of the connecting shaft, a sealing cover fixedly connected to the inside of the mixing barrel, a motor 1 arranged inside the sealing cover, a rotating column fixedly connected to the output end of the motor 1, a connecting column fixedly connected to the upper surface of the rotating column, one end of the connecting column fixedly connected to the lower surface of the extrusion block, and a mixing component arranged inside the mixing barrel.

[0006] Furthermore, the mixing assembly includes a second motor, a side wall of the second motor is fixedly connected to the lower surface of the mixing barrel, an output end of the second motor is fixedly connected to a rotating shaft, and a side wall of the rotating shaft is fixedly connected to a stirring plate.

[0007] Furthermore, the connecting column is arranged on one side of the upper surface of the rotating column.

[0008] Furthermore, a discharge pipe is fixedly connected inside the mixing barrel, and a second rotating shaft is rotatably connected inside the discharge pipe.

[0009] Furthermore, a motor three is fixedly connected to the side wall of the discharge pipe, and an output end of the motor three is fixedly connected to one end of the rotating shaft two.

[0010] Furthermore, two side walls of the rotating shaft are fixedly connected with conveying blades, and the side walls of the conveying blades are in contact with the inside of the discharge pipe.

[0011] Furthermore, a discharge pipe is fixedly connected inside the discharge pipe.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the effect of extruding and crushing sand and gravel is achieved through the cooperation among the funnel frame, the fixed frame, the roller, the connecting shaft, the extrusion block, the sealing cover, the motor 1, the rotating column and the connecting column, and the problem of the feed port being blocked due to the single structure of the feed port of some sand adding devices is solved. The feed port is avoided from being blocked by the above structure.

[0014] 2. In the utility model, the coordination among the discharge pipe, the second rotating shaft, the third motor, the conveying blades and the discharge pipe is used to avoid blockage during discharge, and the problem that the discharge port of some sand adding devices has a single structure and may be blocked is solved. The practicability of the equipment is improved through the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A three-dimensional diagram of an anti-clogging sand adding device for a shale oil and gas fracturing system proposed by the utility model;

[0016] Figure 2 This is a structural diagram of a mixing barrel of an anti-clogging sand adding device for a shale oil and gas fracturing system proposed by the utility model;

[0017] Figure 3 This is a structural diagram of a discharge pipe of an anti-clogging sand adding device for a shale oil and gas fracturing system proposed by the utility model.

[0018] Legend:

[0019] 1. Mixing barrel; 2. Funnel rack; 3. Fixed rack; 4. Roller; 5. Connecting shaft; 6. Extrusion block; 7. Sealing cover; 8. Motor 1; 9. Rotating column; 10. Connecting column; 11. Motor 2; 12. Rotating shaft 1; 13. Stirring plate; 14. Discharge pipe; 15. Rotating shaft 2; 16. Motor 3; 17. Conveying blade; 18. Discharge pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1 and Figure 2 The utility model provides an embodiment: an anti-clogging sand adding device for a shale oil and gas fracturing system, comprising a mixing barrel 1, a funnel frame 2 is fixedly connected to the upper surface of the mixing barrel 1, a fixing frame 3 is fixedly connected inside the funnel frame 2, a roller 4 is arranged inside the fixing frame 3, a connecting shaft 5 is fixedly connected to the side wall of the roller 4, an extrusion block 6 is fixedly connected to one end of the connecting shaft 5, a sealing cover 7 is fixedly connected to the mixing barrel 1, a motor 1 8 is arranged inside the sealing cover 7, a rotating column 9 is fixedly connected to the output end of the motor 1 8, a connecting column 10 is fixedly connected to the upper surface of the rotating column 9, one end of the connecting column 10 is fixedly connected to the lower surface of the extrusion block 6, a mixing component is arranged inside the mixing barrel 1, the mixing component comprises a motor 2 11, a side wall of the motor 2 11 is fixedly connected to the lower surface of the mixing barrel 1, a rotating shaft 12 is fixedly connected to the output end of the motor 2 11, a stirring plate 13 is fixedly connected to the side wall of the rotating shaft 12, and the connecting column 10 is arranged on one side of the upper surface of the rotating column 9.

[0022] When using the equipment to add sand, pour sand and water into the funnel frame 2 in a certain proportion, then start the motor 8, the motor 8 will drive the rotating column 9 to rotate, the rotation of the rotating column 9 will drive the connecting column 10 to perform circular motion, during this process, the connecting column 10 will drive the extrusion block 6 to move, and squeeze the sand and gravel between the funnel frame 2 and the extrusion block 6. The purpose of this step is to crush the sand and gravel to make it easier to mix and process. The crushed sand and gravel will fall into the mixing barrel 1, then start the motor 2 11, the motor 2 11 will drive the rotating shaft 12 to rotate, and the stirring plate 13 on the rotating shaft 12 will rotate accordingly to fully stir and mix the sand and gravel and water in the mixing barrel 1.

[0023] Reference Figure 3 A discharge pipe 14 is fixedly connected to the inside of the mixing barrel 1, and a rotating shaft 2 15 is rotatably connected to the inside of the discharge pipe 14. A motor 3 16 is fixedly connected to the side wall of the discharge pipe 14, and the output end of the motor 3 16 is fixedly connected to one end of the rotating shaft 2 15. A conveying blade 17 is fixedly connected to the side wall of the rotating shaft 2 15, and the side wall of the conveying blade 17 is in contact with the inside of the discharge pipe 14. A discharge pipe 18 is fixedly connected to the inside of the discharge pipe 14.

[0024] After the mixing process is completed, the motor 3 16 is started to drive the rotating shaft 2 15 to start rotating, and further drive the conveying blade 17 to rotate, so as to accurately control the discharge process of the raw materials. Inside the mixing barrel 1, the fully mixed raw materials are driven by the conveying blade 17 and gradually discharged from the mixing barrel 1. This process not only ensures the uniform mixing of the raw materials, but also ensures the smoothness and efficiency of the discharge process.

[0025] Working principle: When using the equipment to add sand, first pour sand and water into the funnel frame 2, start the motor 1 8 to drive the rotating column 9 to rotate, thereby driving the connecting column 10 to perform a circular motion. When the connecting column 10 performs a circular motion, it will drive the extrusion block 6 to move, squeeze the sand and gravel between itself and the funnel frame 2, and make it break and fall into the mixing barrel 1. At this time, start the motor 2 11 to drive the rotating shaft 1 12 to rotate, and mix the sand and water through the stirring plate 13. After the mixing is completed, start the motor 3 16 to drive the rotating shaft 2 15 to rotate, thereby driving the conveying blade 17 to rotate to discharge the raw materials inside the mixing barrel 1.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-clogging sand adding device for a shale oil and gas fracturing system, comprising a mixing barrel (1), characterized in that: The upper surface of the mixing barrel (1) is fixedly connected to a funnel frame (2), the interior of the funnel frame (2) is fixedly connected to a fixing frame (3), a roller (4) is arranged inside the fixing frame (3), a connecting shaft (5) is fixedly connected to the side wall of the roller (4), one end of the connecting shaft (5) is fixedly connected to an extrusion block (6), a sealing cover (7) is fixedly connected to the interior of the mixing barrel (1), a motor (8) is arranged inside the sealing cover (7), a rotating column (9) is fixedly connected to the output end of the motor (8), a connecting column (10) is fixedly connected to the upper surface of the rotating column (9), one end of the connecting column (10) is fixedly connected to the lower surface of the extrusion block (6), and a mixing component is arranged inside the mixing barrel (1).

2. The anti-clogging sand adding device for shale oil and gas fracturing system according to claim 1, characterized in that: The mixing assembly comprises a second motor (11), the side wall of the second motor (11) is fixedly connected to the lower surface of the mixing barrel (1), the output end of the second motor (11) is fixedly connected to a first rotating shaft (12), and the side wall of the first rotating shaft (12) is fixedly connected to a stirring plate (13).

3. The anti-clogging sand adding device for shale oil and gas fracturing system according to claim 1, characterized in that: The connecting column (10) is arranged on one side of the upper surface of the rotating column (9).

4. The anti-clogging sand adding device for shale oil and gas fracturing system according to claim 1, characterized in that: A discharge pipe (14) is fixedly connected inside the mixing barrel (1), and a second rotating shaft (15) is rotatably connected inside the discharge pipe (14).

5. The anti-clogging sand adding device for shale oil and gas fracturing system according to claim 4, characterized in that: The side wall of the discharge pipe (14) is fixedly connected to a motor three (16), and the output end of the motor three (16) is fixedly connected to one end of the rotating shaft two (15).

6. The anti-clogging sand adding device for shale oil and gas fracturing system according to claim 5, characterized in that: The side wall of the second rotating shaft (15) is fixedly connected with a conveying blade (17), and the side wall of the conveying blade (17) fits the inside of the discharge pipe (14).

7. The anti-clogging sand adding device for shale oil and gas fracturing system according to claim 6, characterized in that: The discharge pipe (14) is fixedly connected to a discharge pipe (18) inside.

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