Electrically-driven sand mulling pry device

Abstract

The utility model relates to the technical field of petroleum fracturing equipment, and discloses an electric drive sand mixing prying device which comprises a prying frame, a spiral sand conveyor is fixedly connected to the top of the prying frame, a cleaning mechanism is arranged in the spiral sand conveyor, and the cleaning mechanism comprises a water injection pipe. The exterior of the water injection pipe is fixedly connected to the top side of the interior of the spiral sand conveyor, a guide rail is fixedly connected to the exterior of the spiral sand conveyor, a baffle is slidably connected to the interior of the guide rail, a U-shaped plate is fixedly connected to the top of the baffle, and a driving assembly is fixedly connected to the exterior of the spiral sand conveyor. The U-shaped plate is driven by the air cylinder, the baffle is driven to slide along the guide rail, the water injection pipe injects water after the channel is opened, residual sand is flushed out of the spiral sand conveyor, the interior of the spiral sand conveyor can be cleaned in time after sand conveying operation, equipment corrosion and aggravated abrasion caused by sand residual accumulation are prevented, and smoothness of the sand conveying channel is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of oil fracturing equipment technology, and in particular to an electrically driven sand mixing skid device. Background Technology

[0002] As the global energy structure accelerates its transformation towards cleaner and lower-carbon energy sources, the efficient development of unconventional oil and gas resources such as shale gas and tight oil has become a research hotspot in the energy sector. During fracturing operations, the proppant mixing skid, as a key piece of equipment, plays a crucial role in uniformly mixing proppant and fracturing fluid; its performance directly impacts the efficiency and effectiveness of fracturing operations. Electric-driven proppant mixing skids, with their advantages of low energy consumption, low noise, and convenient maintenance, are gradually becoming a new trend in the industry, injecting new green momentum into oil and gas field development.

[0003] The electrically driven sand mixing skid unit consists of an electric motor, a sand mixing tank, a sand hopper, a liquid transfer pump, a mixing component, a control assembly, and associated pipelines and valves. During operation, the electric motor outputs power to drive the liquid transfer pump, delivering fracturing fluid from the storage tank to the sand mixing tank. Simultaneously, the sand hopper precisely adds proppant to the sand mixing tank via a feeding device. The mixing component thoroughly mixes the fracturing fluid and sand to create a homogeneous slurry. The control assembly monitors and adjusts parameters such as the mixing ratio and flow rate in real time. Finally, the prepared slurry is delivered to the fracturing wellhead via pipeline through the transfer pump. The entire operation is electrically driven, making it more efficient and environmentally friendly compared to traditional fuel-powered systems.

[0004] In the existing technology, some devices lack an efficient and convenient cleaning structure design after the material feeding process, which makes it difficult to completely remove residual sand. This leads to the accumulation of sand residue, which causes equipment corrosion and increased wear. To address this issue, an electrically driven sand mixing skid device is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an electrically driven sand mixing skid device, which aims to improve the problem of difficulty in removing residual sand in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An electrically driven sand mixing skid device includes a skid frame, a spiral sand conveyor fixedly connected to the top of the skid frame, a cleaning mechanism provided inside the spiral sand conveyor, a transmission mechanism provided at the top of the skid frame, and a mixing tank fixedly connected to the bottom of the spiral sand conveyor, the bottom of the mixing tank being fixedly connected to the top of the skid frame.

[0008] The cleaning mechanism includes a water injection pipe, which is externally fixedly connected to the top inside of the spiral sand conveyor. A guide rail is externally fixedly connected to the spiral sand conveyor, and a baffle is slidably connected inside the guide rail. A U-shaped plate is fixedly connected to the top of the baffle, and a drive assembly is externally fixedly connected to the spiral sand conveyor.

[0009] As a further description of the above technical solution:

[0010] The transmission mechanism includes a main motor, the bottom of which is fixedly connected to the top of the skid, a transfer case is fixedly connected to the top of the skid, a hydraulic oil tank is fixedly connected to the top inside of the skid, and a hydraulic assembly is provided on the top of the skid.

[0011] As a further description of the above technical solution:

[0012] The drive assembly includes a fixed base, which is externally fixedly connected to the outside of the spiral sand conveyor, and a cylinder is internally fixedly connected to the fixed base. The drive end of the cylinder is fixedly connected to the bottom of the U-shaped plate.

[0013] As a further description of the above technical solution:

[0014] The hydraulic assembly includes a suction centrifugal pump, the bottom of which is fixedly connected to the top of the skid, and a suction manifold fixedly connected to the output end of the suction centrifugal pump. A discharge centrifugal pump is fixedly connected to the top of the skid, and a discharge manifold fixedly connected to the output end of the discharge centrifugal pump.

[0015] As a further description of the above technical solution:

[0016] The bottom of the inhalation manifold is fixedly connected to the top of the skid, and the bottom of the discharge manifold is fixedly connected to the top of the skid.

[0017] As a further description of the above technical solution:

[0018] A hydraulic motor is fixedly connected to the top of the spiral sand conveyor, and a hydraulic pump is fixedly connected to the top of the skid.

[0019] As a further description of the above technical solution:

[0020] A dry additive is fixedly connected to the top of the mixing tank, and a liquid additive pump is fixedly connected to the top of the skid.

[0021] As a further description of the above technical solution:

[0022] An operating room is fixedly connected to the top of the skid, and an auxiliary motor is fixedly connected to the top of the skid.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the U-shaped plate is driven by the cylinder, which drives the baffle to slide along the guide rail. After the channel is opened, water is injected through the water injection pipe to flush out the residual sand from the spiral sand conveyor. This can clean the inside of the spiral sand conveyor in time after the sand conveying operation, prevent the accumulation of residual sand from causing equipment corrosion and aggravated wear, and ensure that the sand conveying channel is unobstructed.

[0025] 2. In this utility model, the main motor starts, and the power is distributed through the transfer case to drive the hydraulic pump. At the same time, the auxiliary motor drives the discharge centrifugal pump. The main motor and the transfer case work together to accurately distribute the power, ensuring the coordinated operation of the hydraulic pump and the spiral sand conveyor. The auxiliary motor assists the discharge centrifugal pump in stabilizing and pressurizing the medium. The power distribution is reasonable, which improves the overall operating efficiency of the sand mixing skid, ensures the smooth flow of sand conveying and medium pressurization, and provides reliable power support for the stable production and transportation of sand mixing liquid. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an electrically driven sand mixing skid device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the skid frame of an electrically driven sand mixing skid device proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the spiral sand conveyor of the electrically driven sand mixing skid device proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Hydraulic pump; 2. Transfer case; 3. Hydraulic oil tank; 4. Discharge manifold; 5. Auxiliary motor; 6. Discharge centrifugal pump; 7. Mixing tank; 8. Liquid injection pump; 9. Spiral sand conveyor; 10. Skid; 11. Hydraulic motor; 12. Dry injection; 13. Suction centrifugal pump; 14. Control room; 15. Suction manifold; 16. Main motor; 17. Water injection pipe; 18. Guide rail; 19. Baffle; 20. U-shaped plate; 21. Fixed base; 22. Cylinder. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model is provided: an electrically driven sand mixing skid device, including a skid frame 10, which is the basic load-bearing structure of the entire sand mixing skid device. A spiral sand conveyor 9 is fixedly connected to the top of the skid frame 10. The spiral sand conveyor 9 is a key component for conveying sand. A cleaning mechanism is provided inside the spiral sand conveyor 9. A transmission mechanism is provided at the top of the skid frame 10. A mixing tank 7 is fixedly connected to the bottom of the spiral sand conveyor 9. The mixing tank 7 serves as a container for mixing sand and working fluid, which can make the sand and working fluid fully and evenly mixed. The bottom of the mixing tank 7 is fixedly connected to the top of the skid frame 10.

[0034] The cleaning mechanism includes a water injection pipe 17, which is used to inject cleaning water into the spiral sand conveyor 9. The water injection pipe 17 is externally fixedly connected to the top side of the spiral sand conveyor 9. The spiral sand conveyor 9 is externally fixedly connected to a guide rail 18, which provides guiding constraints for the sliding of the baffle 19. The baffle 19 is slidably connected inside the guide rail 18. The baffle 19 is a key component in the cleaning mechanism for realizing the opening and closing control of the channel. The top of the baffle 19 is fixedly connected to a U-shaped plate 20, which plays a role in force transmission and structural adaptation. The spiral sand conveyor 9 is externally fixedly connected to a drive assembly.

[0035] The drive assembly includes a fixed base 21, which is used to install a fixed cylinder 22. The fixed base 21 is externally fixedly connected to the outside of the spiral sand conveyor 9, and the cylinder 22 is internally fixedly connected to the fixed base 21. The cylinder 22 then drives the U-shaped plate 20 and the baffle 19 to achieve linear sliding. The drive end of the cylinder 22 is fixedly connected to the bottom of the U-shaped plate 20.

[0036] Reference Figure 1 and Figure 2 The transmission mechanism includes a main motor 16, which is the key power source of the entire sand mixing skid device. The bottom of the main motor 16 is fixedly connected to the top of the skid frame 10. The top of the skid frame 10 is fixedly connected to a transfer case 2, which is a key transmission component for realizing power distribution and speed regulation. The top side of the skid frame 10 is fixedly connected to a hydraulic oil tank 3, which is used to store the hydraulic oil required for hydraulic operation. The top of the skid frame 10 is equipped with a hydraulic assembly.

[0037] The hydraulic assembly includes a suction centrifugal pump 13, which is a key pump body used for suctioning media. The bottom of the suction centrifugal pump 13 is fixedly connected to the top of the skid 10. The output end of the suction centrifugal pump 13 is fixedly connected to a suction manifold 15, which plays a role in guiding, distributing and controlling the media. The top of the skid 10 is fixedly connected to a discharge centrifugal pump 6, which mainly functions to further pressurize and transport the media delivered by the suction centrifugal pump 13 to subsequent equipment. The output end of the discharge centrifugal pump 6 is fixedly connected to a discharge manifold 4, which undertakes the function of high-pressure media transportation and distribution. The bottom of the suction manifold 15 is fixedly connected to the top of the skid 10, and the bottom of the discharge manifold 4 is fixedly connected to the top of the skid 10.

[0038] Reference Figure 1 and Figure 2 A hydraulic pump 1 is fixedly connected to the top of the skid 10. The hydraulic pump 1 has a high pressure output capacity and volumetric efficiency. The pump body has a compact structure and is easy to integrate into the skid 10. A hydraulic motor 11 is fixedly connected to the top of the spiral sand conveyor 9. The hydraulic motor 11 converts the hydraulic energy provided by the hydraulic pump 1 into mechanical energy to drive the spiral sand conveyor 9 to operate. A dry additive 12 is fixedly connected to the top of the mixing tank 7. The dry additive 12 is used to add dry additives into the mixing tank 7. A liquid additive pump 8 is fixedly connected to the top of the skid 10. The liquid additive pump 8 is used to accurately deliver liquid additives to the mixing tank 7. An operating room 14 is fixedly connected to the top of the skid 10. The operating room 14 is the control center of the sand mixing skid and provides a safe and convenient operating environment for the operators. An auxiliary motor 5 is fixedly connected to the top of the skid 10. The auxiliary motor 5 is used to drive the discharge centrifugal pump 6 to operate.

[0039] Working principle: When the electric-driven sand mixing skid device is in operation, the main motor 16 starts and the power is distributed through the transfer case 2. On the one hand, it drives the hydraulic pump 1 to operate. The hydraulic energy output by the hydraulic pump 1 is converted into mechanical energy through the hydraulic motor 11, which drives the spiral sand conveyor 9 to work and transport the sand to the mixing tank 7. On the other hand, the auxiliary motor 5 drives the discharge centrifugal pump 6 to operate. At the same time, the hydraulic oil tank 3 provides hydraulic oil to the hydraulic components. The suction centrifugal pump 13 sucks in the medium through the suction manifold 15. After being pressurized by the discharge centrifugal pump 6, it is transported by the discharge manifold 4.

[0040] After the spiral sand conveyor 9 finishes conveying sand, the cleaning mechanism can clean the spiral sand conveyor 9. The cylinder 22 drives the U-shaped plate 20 and the baffle 19 to slide along the guide rail 18, opening the channel of the spiral sand conveyor 9 to the outside. Water is injected through the water injection pipe 17, and the water will flush out the residual sand from the spiral sand conveyor 9, thus cleaning the residual sand inside the sand conveyor. The dry additive 12 device adds dry additives to the mixing tank 7, and the liquid additive pump 8 delivers liquid additives. The working fluid, sand, and additives are mixed in the mixing tank 7. The operator monitors and controls the parameters of each equipment in real time through the control room 14, so that the sand mixing liquid is continuously produced and delivered according to the process requirements to meet the operation needs.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrically driven sand-mixing skid device, comprising a skid frame (10), characterized in that: The top of the skid (10) is fixedly connected to a spiral sand conveyor (9), the interior of the spiral sand conveyor (9) is provided with a cleaning mechanism, the top of the skid (10) is provided with a transmission mechanism, the bottom of the spiral sand conveyor (9) is fixedly connected to a mixing tank (7), and the bottom of the mixing tank (7) is fixedly connected to the top of the skid (10). The cleaning mechanism includes a water injection pipe (17), which is externally fixedly connected to the top inside of the spiral sand conveyor (9). A guide rail (18) is externally fixedly connected to the spiral sand conveyor (9). A baffle (19) is slidably connected inside the guide rail (18). A U-shaped plate (20) is fixedly connected to the top of the baffle (19). A drive assembly is externally fixedly connected to the spiral sand conveyor (9).

2. The electrically driven sand-mixing skid device according to claim 1, characterized in that: The transmission mechanism includes a main motor (16), the bottom of which is fixedly connected to the top of the skid (10), a transfer case (2) is fixedly connected to the top of the skid (10), a hydraulic oil tank (3) is fixedly connected to the top side inside the skid (10), and a hydraulic assembly is provided on the top of the skid (10).

3. The electrically driven sand-mixing skid device according to claim 1, characterized in that: The drive assembly includes a fixed base (21), which is externally fixedly connected to the outside of the spiral sand conveyor (9). A cylinder (22) is fixedly connected inside the fixed base (21), and the drive end of the cylinder (22) is fixedly connected to the bottom of the U-shaped plate (20).

4. The electrically driven sand-mixing skid device according to claim 2, characterized in that: The hydraulic assembly includes a suction centrifugal pump (13), the bottom of which is fixedly connected to the top of the skid (10), the output end of which is fixedly connected to a suction manifold (15), the top of which is fixedly connected to a discharge centrifugal pump (6), and the output end of which is fixedly connected to a discharge manifold (4).

5. The electrically driven sand-mixing skid device according to claim 4, characterized in that: The bottom of the inhalation manifold (15) is fixedly connected to the top of the skid (10), and the bottom of the discharge manifold (4) is fixedly connected to the top of the skid (10).

6. The electrically driven sand-mixing skid device according to claim 1, characterized in that: A hydraulic motor (11) is fixedly connected to the top of the spiral sand conveyor (9), and a hydraulic pump (1) is fixedly connected to the top of the skid (10).

7. The electrically driven sand-mixing skid device according to claim 1, characterized in that: The top of the mixing tank (7) is fixedly connected to a dry additive (12), and the top of the skid (10) is fixedly connected to a liquid additive pump (8).

8. The electrically driven sand-mixing skid device according to claim 1, characterized in that: An operating room (14) is fixedly connected to the top of the skid (10), and an auxiliary motor (5) is fixedly connected to the top of the skid (10).

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