Dry powder adding device of fracturing blender truck

Abstract

The dry powder adding device of the fracturing blender truck comprises a material hopper and a weighing cylinder located below the material hopper, a discharging pipe is fixedly connected to the bottom of the material hopper, a first electric butterfly valve used for opening and closing is arranged on the discharging pipe, an outer circular ring is fixedly connected to the top of the weighing cylinder, and a second electric butterfly valve used for opening and closing is arranged on the outer circular ring. An inner circular ring is coaxially arranged on the inner side of the outer circular ring, a rotating opening is formed between the outer circular ring and the inner circular ring, and an inserting opening is formed in the center of the inner circular ring. According to the capsule gel breaker weighing device, external air is sucked into the cavity of the rotating disc through the hose and finally discharged through the air nozzle, and air pressure is blown to the inner wall of the weighing cylinder, so that capsule gel breakers remaining in the weighing cylinder due to adhesion and the like are loosened, move towards the discharging pipe and finally are discharged through the discharging pipe; in addition, part of the air nozzles can be arranged to face the pipe opening of the discharging pipe, generated air pressure is blown to the pipe opening of the discharging pipe at the moment, the capsule gel breaker on the inner wall of the discharging pipe is loosened, and blocking is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of oil and gas well fracturing equipment, specifically a dry powder addition device for a fracturing sand mixing truck. Background Technology

[0002] The dry powder addition device of the fracturing mix truck is used to quantitatively add capsule breaker additives to the fracturing fluid during fracturing operations. It is a crucial component of the mix truck, directly impacting the quality and effectiveness of the fracturing operation. The capsule breaker and fracturing fluid enter the mixing tank. A motor installed at the bottom of the tank drives a rotating shaft, which in turn rotates the mixing and flow fan blades, mixing the raw materials. Subsequently, the capsule breaker is added to the formation along with the fracturing fluid during the fracturing process. Due to the outer gel coat, the capsule breaker does not react with the fluid upon entering the formation. After fracturing, as the capsule breaker remains in the formation and the formation temperature increases, the gel coat dissolves automatically. The breaker then reacts with the fracturing fluid, promoting rapid breaking down of the fracturing fluid. This allows for rapid and efficient flowback of the fracturing fluid, preventing damage from prolonged formation stagnation and facilitating subsequent oil and gas extraction operations.

[0003] The dry powder addition device of the fracturing mixing truck has certain shortcomings in the process of adding capsule breaker. The material hopper discharges the capsule breaker into the weighing cylinder, and the receiving box discharges a quantitative amount through the weighing cylinder. 1. If the inner wall of the weighing cylinder has insufficient processing precision, the capsule breaker particles will become stuck due to increased friction. In particular, since capsule breaker particles are mostly spherical or near-spherical, they are prone to forming an "arch bridge effect" (particles squeeze and get stuck at right-angled edges), causing local accumulation and blockage at the discharge port, affecting normal material feeding. 2. After the fracturing fluid completes the construction tasks such as carrying sand into the fracture, the capsule breaker gel coat automatically dissolves when heated. The breaker reacts with the fracturing fluid to promote rapid gel breaking of the fracturing fluid, which can quickly degrade from a high-viscosity gel state to a low-viscosity fluid state in a short time, thereby quickly restoring the formation's oil and gas permeability. However, if the residual capsule breaker does not enter the mixing tank, the mixing amount with the fracturing fluid will be insufficient, which may cause the fracturing fluid to fail to break in time, affecting the flowback fluid efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a dry powder addition device for fracturing sand mixing trucks, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dry powder addition device for a fracturing sand mixing vehicle, comprising a material hopper and a weighing cylinder located below the material hopper. A discharge pipe is fixedly connected to the bottom of the material hopper, and an electric butterfly valve for opening and closing is provided on the discharge pipe. An outer ring is fixedly connected to the top of the weighing cylinder, and an inner ring is coaxially arranged on the inner side of the outer ring, forming a rotating opening between the outer and inner rings. The inner ring has a socket at its center, through which the lower end of the discharge pipe passes. A positioning strip is fixedly connected between the top of the outer ring and the top of the inner ring. A discharge pipe is fixedly connected to the bottom of the weighing cylinder, and an electric butterfly valve for opening and closing is provided on the weighing cylinder. A rotatable rotating disk is rotatably embedded inside the socket, and a cavity is opened inside the rotating disk. Multiple circumferentially distributed air nozzles are connected to the bottom of the rotating disk. A pneumatic assembly for supplying air to the cavity is also fixedly installed on the top of the outer ring.

[0008] Preferably, the pneumatic assembly includes an air pump fixedly installed on the top of the outer ring, with a hose fixedly connected to the air outlet end of the air pump, and the other end of the hose communicating with the cavity inside the rotating disk.

[0009] Preferably, a gear ring is fixedly connected to the top of the rotating disk, a motor is fixedly installed on the outer wall of the weighing cylinder, and a gear is fixedly connected to the output end of the motor, with the gear meshing with the gear ring.

[0010] Preferably, the cross-section of the rotating disk is I-shaped.

[0011] Preferably, it also includes an electronic scale and a weighing platform fixedly installed on top of the electronic scale, with the weighing cylinder fixedly disposed on the weighing platform.

[0012] Preferably, the interior of both the material hopper and the weighing cylinder is funnel-shaped.

[0013] Preferably, the top of the material hopper is provided with a cover plate that rotates via a hinge.

[0014] Preferably, the outer diameter of the feeding tube is smaller than the inner diameter of the socket, and a rubber ring is fixedly connected to the socket.

[0015] Preferably, it also includes a bracket fixedly connected to the material hopper, the bracket being used to support the material hopper.

[0016] (III) Beneficial Effects

[0017] This utility model provides a dry powder addition device for fracturing sand mixing trucks, which has the following beneficial effects:

[0018] 1. In this utility model, by starting the air pump, external air is drawn into the cavity of the rotating disc through a hose and finally discharged through the air nozzle. The air pressure blows onto the inner wall of the weighing cylinder, causing the capsule breaker agent remaining inside the weighing cylinder due to adhesion or other reasons to loosen and move towards the discharge pipe, and finally be discharged through the discharge pipe. In addition, some air nozzles can be set to face the opening of the discharge pipe. At this time, the air pressure generated blows onto the opening of the discharge pipe, loosening the capsule breaker agent on its inner wall and preventing blockage.

[0019] 2. In this utility model, by starting the motor, the gear is driven to rotate back and forth within a certain angle range. The gear drives the gear ring to swing back and forth, and the gear ring drives the rotating disk and the air nozzle to swing back and forth, thereby expanding the purging range, fully loosening the capsule de-icing agent remaining inside the weighing cylinder, and further improving the feeding effect. Attached Figure Description

[0020] Figure 1 This is a front-view perspective view of a dry powder addition device for a fracturing sand mixing vehicle proposed in this utility model.

[0021] Figure 2 This is a rear-view three-dimensional structural diagram of a dry powder addition device for a fracturing sand mixing vehicle proposed in this utility model;

[0022] Figure 3 This is a cross-sectional perspective view of a dry powder addition device for a fracturing sand mixing vehicle proposed in this utility model.

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A.

[0024] In the diagram: 1. Material hopper; 2. Weighing cylinder; 3. Feeding pipe; 4. Electric butterfly valve one; 5. Discharge pipe; 6. Electric butterfly valve two; 7. Electronic scale; 8. Weighing platform; 9. Outer ring; 10. Inner ring; 101. Inlet; 11. Positioning strip; 12. Air pump; 13. Hose; 14. Rotating disc; 141. Cavity; 15. Air nozzle; 16. Rotating port; 17. Rubber ring; 18. Cover plate; 19. Gear ring; 20. Motor; 21. Gear; 22. Support. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figures 1 to 4This utility model provides a technical solution: a dry powder addition device for a fracturing sand mixing vehicle, including a material hopper 1 and a weighing cylinder 2 located below the material hopper 1. A feeding pipe 3 is fixedly connected to the bottom of the material hopper 1, and an electric butterfly valve 4 for opening and closing is provided on the feeding pipe 3. An outer ring 9 is fixedly connected to the top of the weighing cylinder 2, and an inner ring 10 is coaxially arranged on the inner side of the outer ring 9. A rotation port 16 is formed between the outer ring 9 and the inner ring 10. The inner ring 10 has an insertion port 101 at its center. The lower end of the feeding pipe 3... An insertion port 101 is provided. A positioning strip 11 is fixedly connected between the top of the outer ring 9 and the top of the inner ring 10. A discharge pipe 5 is fixedly connected to the bottom of the weighing cylinder 2. An electric butterfly valve 6 for opening and closing is provided on the weighing cylinder 2. A rotatable rotating disk 14 is rotatably embedded inside the insertion port 101. A cavity 141 is opened inside the rotating disk 14. Multiple circumferentially distributed air nozzles 15 are connected to the bottom of the rotating disk 14. A pneumatic assembly for supplying air to the cavity 141 is also fixedly installed on the top of the outer ring 9.

[0027] Open the electric butterfly valve 4, and the capsule breaker enters the weighing cylinder 2 through the feed pipe 3 for material collection. After quantitative collection, close the electric butterfly valve 4, and then open the electric butterfly valve 6. The capsule breaker inside the weighing cylinder 2 is discharged through the discharge pipe 5 to the mixing tank of the next process to be mixed with fracturing fluid. The next process is not the direction of improvement of this application, so it will not be described in detail. There may be capsule breaker residue on the inner wall of the weighing cylinder 2. By starting the air pressure component, the high air pressure generated is drawn into the cavity 141 of the rotating disk 14 through the hose 13, and finally discharged through the jet nozzle 15. The air pressure blows towards the inner wall of the weighing cylinder 2, which loosens the capsule breaker residue inside the weighing cylinder 2 due to adhesion and other reasons, promotes material collection, and avoids waste of raw materials.

[0028] Specifically, the pneumatic assembly includes an air pump 12 fixedly installed on the top of the outer ring 9. The air outlet of the air pump 12 is fixedly connected to a hose 13, and the other end of the hose 13 is connected to the cavity 141 inside the rotating disk 14.

[0029] By activating the air pump 12, external air is drawn into the cavity 141 of the rotating disk 14 through the hose 13, and finally discharged through the air nozzle 15. The air pressure blows towards the inner wall of the weighing cylinder 2, causing the capsule breaker agent remaining inside the weighing cylinder 2 due to adhesion or other reasons to loosen and move towards the discharge pipe 5, and finally be discharged through the discharge pipe 5. In addition, some of the air nozzles 15 can be set to face the opening of the discharge pipe 5. At this time, the air pressure generated blows towards the opening of the discharge pipe 5, loosening the capsule breaker agent on its inner wall and preventing blockage.

[0030] Furthermore, a gear ring 19 is fixedly connected to the top of the rotating disk 14, and a motor 20 is fixedly installed on the outer wall of the weighing cylinder 2. A gear 21 is fixedly connected to the output end of the motor 20, and the gear 21 meshes with the gear ring 19.

[0031] By starting the motor 20, the gear 21 is driven to rotate back and forth within a certain angle range. The gear 21 drives the gear ring 19 to swing back and forth. The gear ring 19 drives the rotating disk 14 and the air nozzle 15 to swing back and forth, thereby expanding the purging range and fully loosening the capsule de-icing agent remaining inside the weighing cylinder 2, while further improving the feeding effect.

[0032] In this design, the cross-section of the rotating disk 14 is I-shaped, which matches the structure of the rotating opening 16, ensuring that the rotating disk 14 can rotate without falling off.

[0033] In order to weigh the capsule de-icing agent inside the weighing cylinder 2, this application also includes an electronic scale 7 and a weighing platform 8 fixedly installed on the top of the electronic scale 7, with the weighing cylinder 2 fixedly installed on the weighing platform 8.

[0034] When the electric butterfly valve 4 is opened, the capsule breaker enters the weighing cylinder 2 through the feed pipe 3. The electronic scale 7 monitors the weight in real time. When the preset weight is reached, the electronic scale 7 sends a signal to the controller, which then sends a command to the electric butterfly valve 4, which closes the valve.

[0035] Both the material hopper 1 and the weighing cylinder 2 have a funnel-shaped interior.

[0036] The funnel-shaped structure is wider at the top and narrower at the bottom. Under the influence of gravity, the capsule breaker naturally flows from the wider upper part to the narrower lower outlet. The relatively smooth inner wall of the funnel allows the material to slide more smoothly, reducing the resistance during the material flow process and enabling the capsule breaker to pass through more quickly.

[0037] Fracturing sand mixing trucks typically operate in open-air environments. A cover plate 18 is installed on the top of the material hopper 1 via a hinge to prevent dust and water from entering the material hopper 1.

[0038] The outer diameter of the feeding pipe 3 is smaller than the inner diameter of the inlet 101. This is to avoid the feeding pipe 3 being directly and rigidly connected to the inner ring 10, and to prevent the material hopper 1 above from affecting the weighing of raw materials by the weighing cylinder 2 below. A rubber ring 17 is fixedly connected to the inlet 101 to improve the sealing performance of the inlet 101.

[0039] It also includes a bracket 22 that is fixedly connected to the material hopper 1, and the bracket 22 is used to support the material hopper 1.

[0040] The support 22 needs to bear the total weight of the material hopper 1 when it is fully loaded. It is a conventional structure and will not be described in detail. The support 22 and the electronic scale 7 in this application are fixedly installed on the fracturing sand mixing vehicle to ensure the stable operation of the material conveying system under complex working conditions.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dry powder addition device for fracturing sand mixing truck, characterized in that: The device includes a material hopper (1) and a weighing cylinder (2) located below the material hopper (1). A discharge pipe (3) is fixedly connected to the bottom of the material hopper (1). An electric butterfly valve (4) for opening and closing is installed on the discharge pipe (3). An outer ring (9) is fixedly connected to the top of the weighing cylinder (2). An inner ring (10) is coaxially arranged on the inner side of the outer ring (9). A rotating opening (16) is formed between the outer ring (9) and the inner ring (10). The inner ring (10) has a socket (101) at its center. The lower end of the discharge pipe (3) passes through the socket (101). A positioning strip (11) is fixedly connected between the top of the outer ring (9) and the top of the inner ring (10). A discharge pipe (5) is fixedly connected to the bottom of the weighing cylinder (2). An electric butterfly valve (6) for opening and closing is provided on the weighing cylinder (2). A rotatable rotating disk (14) is rotatably embedded inside the inlet (101). A cavity (141) is opened inside the rotating disk (14). Multiple circumferentially distributed air nozzles (15) are connected to the bottom of the rotating disk (14). A pneumatic assembly for supplying air to the cavity (141) is also fixedly installed on the top of the outer ring (9).

2. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: The pneumatic assembly includes an air pump (12) fixedly installed on the top of the outer ring (9). The air outlet of the air pump (12) is fixedly connected to a hose (13), and the other end of the hose (13) is connected to the cavity (141) inside the rotating disk (14).

3. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: A gear ring (19) is fixedly connected to the top of the rotating disk (14), and a motor (20) is fixedly installed on the outer wall of the weighing cylinder (2). A gear (21) is fixedly connected to the output end of the motor (20), and the gear (21) meshes with the gear ring (19).

4. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: The cross-section of the rotating disk (14) is I-shaped.

5. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: It also includes an electronic scale (7) and a weighing platform (8) fixedly installed on the top of the electronic scale (7), with the weighing cylinder (2) fixedly installed on the weighing platform (8).

6. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: The interiors of both the material hopper (1) and the weighing cylinder (2) are funnel-shaped.

7. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: The top of the material hopper (1) is fitted with a cover plate (18) that rotates via a hinge.

8. A dry powder additive device for a fracturing blender truck as defined in claim 1, wherein: The outer diameter of the feed tube (3) is smaller than the inner diameter of the socket (101), and a rubber ring (17) is fixedly connected to the socket (101).

9. The dry powder addition device for fracturing sand mixing truck according to claim 1, characterized in that: It also includes a bracket (22) fixedly connected to the material hopper (1), the bracket (22) being used to support the material hopper (1).

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