A fracturing fluid mixing device

Abstract

This utility model discloses an acid fracturing fluid mixing device, relating to the field of oil and gas field equipment technology. The device includes a mixing cylinder with a cap at its top. A first motor is fixedly mounted on the top of the cap, and the output end of the first motor passes through the cap and is fixedly connected to a stirring shaft. Stirring blades are fixedly mounted on the circumferential wall of the stirring shaft. A feed branch pipe is fixedly mounted through the top of the mixing cylinder on one side of the first motor. By driving the first and second motors to rotate, the stirring shaft and stirring frame rotate in opposite directions, preventing the raw materials inside the mixing cylinder from flowing in one direction. This allows for faster and more thorough mixing of the raw materials, improving the mixing effect of the acid fracturing fluid. Brake wheels facilitate movement of the mixing device. Clockwise rotation of the screw moves the support base plate downwards, causing the damping pad to contact the ground, ensuring stable parking of the mixing device.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas field equipment technology, and in particular relates to an acid fracturing fluid mixing device. Background Technology

[0002] Acid fracturing, or acid fracturing for short, is a type of fracturing performed without proppant, using acid as the fracturing fluid at pressures higher than the formation fracturing pressure. During acid fracturing, the acid's corrosive action erodes the fracture surface, creating an uneven surface so that the fracture walls do not completely close after the pump is stopped and pressure is released. A search revealed that patent application number 202323192061.6 discloses an acid fracturing fluid mixing device. The acid fracturing fluid mixing device includes: a tank body with a cover plate at the top and a bottom plate at the bottom; a storage tank inside the tank body, with its top fixedly connected to the cover plate and its bottom having an outlet pipe; a first water pump on top of the cover plate, with its inlet connected to a suction pipe and its outlet connected to the storage tank; a high-pressure nozzle inside the tank body, with its top fixedly connected to the cover plate; a second water pump on top of the cover plate, with its inlet connected to a suction pipe and its outlet connected to the high-pressure nozzle; and a feed inlet on top of the cover plate, the lower end of which passes through the cover plate and extends into the tank body.

[0003] However, during actual use, the applicant found that during the process of stirring the raw materials inside the tank with the stirring rod, the raw materials flowed in a single direction along with the direction of rotation of the stirring rod, which made the mixing of acid fracturing fluid inefficient and the mixing device inconvenient to move. In view of this, we propose an acid fracturing fluid mixing device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to an acid fracturing fluid mixing device, comprising a mixing cylinder, a cylinder cover at the top of the mixing cylinder, a first motor fixedly mounted on the top of the cylinder cover, the output end of the first motor penetrating the cylinder cover and fixedly connected to a stirring shaft, stirring blades fixedly mounted on the peripheral wall of the stirring shaft, a discharge branch pipe fixedly mounted through the top of the mixing cylinder on one side of the first motor, a second motor fixedly mounted at the bottom of the mixing cylinder, the output end of the second motor extending into the interior of the mixing cylinder and sleeved with a stirring frame, a drain branch pipe fixedly mounted at the bottom of the mixing cylinder in front of the second motor, support columns fixedly mounted in a rectangular array at the bottom of the mixing cylinder, a brake wheel mounted at the lower end of the support columns, two support columns on the same side fixedly connected by a connecting plate, a screw threaded through the middle of the connecting plate, a support base plate movably connected to the lower end of the screw via a bearing, and a damping pad fixedly connected to the bottom of the support base plate.

[0006] Preferably, an adjusting disc is sleeved and fixed at the upper end of the screw.

[0007] Preferably, guide rods are symmetrically fixedly provided on the top of the supporting base plate, and the upper end of the guide rods movably penetrates the connecting plate.

[0008] Preferably, the two ends of the connecting plate are respectively sleeved and fixed on the two support columns on the same side.

[0009] Preferably, a controller is fixedly installed on the outer wall of the mixing cylinder, a solenoid valve is fixedly sleeved on the upper part of the drain branch pipe, the controller is electrically connected to an external power supply through a wire, and the first motor, the controller, and the second motor are respectively electrically connected to the controller through wires.

[0010] Preferably, the upper end of the drain branch pipe is connected to the interior of the mixing cylinder.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses an acid fracturing fluid mixing device. By driving a first motor and a second motor to rotate, the stirring shaft and the stirring frame rotate in opposite directions. This prevents the raw materials inside the mixing cylinder from flowing in one direction, allowing the raw materials inside the mixing cylinder to mix more quickly and thoroughly, thus improving the mixing effect of the acid fracturing fluid. The included brake wheel facilitates the movement of the mixing device by personnel. By rotating the screw clockwise, the supporting base plate moves downward, causing the damping pad to abut against the ground, enabling the mixing device to be parked stably. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a top view schematic diagram of an acid fracturing fluid mixing device according to the present invention;

[0015] Figure 2 This is a bottom view schematic diagram of the acid fracturing fluid mixing device of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the mixing cylinder in an acid fracturing fluid mixing device of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Mixing drum; 2. Drum cover; 21. Discharge branch pipe; 3. First motor; 4. Controller; 5. Support column; 6. Second motor; 7. Drainage branch pipe; 8. Solenoid valve; 9. Brake wheel; 10. Connecting plate; 11. Screw; 111. Adjusting disc; 12. Support base plate; 121. Guide rod; 13. Damping pad; 14. Stirring shaft; 141. Stirring blade; 15. Stirring frame. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0021] A fracturing fluid mixing device includes a mixing cylinder 1, a cylinder cover 2 at the top of the mixing cylinder 1, a first motor 3 fixedly mounted on the top of the cylinder cover 2, the output end of the first motor 3 penetrating the cylinder cover 2 and fixedly connected to a stirring shaft 14, stirring blades 141 fixedly mounted on the peripheral wall of the stirring shaft 14, a feed branch pipe 21 fixedly mounted through the top of the mixing cylinder 1 on one side of the first motor 3, and a second motor 6 fixedly mounted at the bottom of the mixing cylinder 1, the output end of the second motor 6 extending into the interior of the mixing cylinder 1 and sleeved with a stirring frame 15, the stirring direction of the stirring frame 15 being opposite to the stirring direction of the stirring shaft 14, which can better drive the mixing of raw materials inside the mixing cylinder 1. By driving the first motor 3 and the second motor 6 to rotate, the stirring shaft 14 and the stirring frame 15 are... Rotating in opposite directions can prevent the raw materials inside the mixing cylinder 1 from flowing in one direction, allowing the raw materials inside the mixing cylinder 1 to mix more quickly and thoroughly, thus improving the mixing effect of the acid fracturing fluid. A drain branch pipe 7 is fixedly installed at the bottom of the mixing cylinder 1 in front of the second motor 6. The upper end of the drain branch pipe 7 is connected to the inside of the mixing cylinder 1, so that the acid fracturing fluid mixed inside the mixing cylinder 1 can be smoothly discharged from the drain branch pipe 7. A controller 4 is fixedly installed on the outer wall of the mixing cylinder 1. A solenoid valve 8 is fixedly sleeved on the upper part of the drain branch pipe 7. The controller 4 is electrically connected to an external power supply through wires. The first motor 3, the controller 4, and the second motor 6 are electrically connected to the controller 4 through wires respectively. Support columns 5 are fixedly installed in a rectangular array at the bottom of the mixing cylinder 1.

[0022] A brake wheel 9 is installed at the lower end of the support column 5. The brake wheel 9 facilitates the movement of the mixing device. Two support columns 5 on the same side are fixedly connected by a connecting plate 10. The two ends of the connecting plate 10 are respectively sleeved and fixed on the two support columns 5 on the same side. A screw 11 is threaded through the middle of the connecting plate 10. The lower end of the screw 11 is movably connected to the support base plate 12 through a bearing. An adjusting disc 111 is sleeved and fixed at the upper end of the screw 11. Guide rods 121 are symmetrically fixed at the top of the support base plate 12, and the upper end of the guide rods 121 movably passes through the connecting plate 10 to guide the movement of the support base plate 12. A damping pad 13 is fixedly connected to the bottom of the support base plate 12. By rotating the screw 11 clockwise, the support base plate 12 moves downward, so that the damping pad 13 abuts against the ground, which enables the mixing device to be parked smoothly.

[0023] Working principle: In use, the mixing drum 1 can be pushed in conjunction with the brake wheel 9 to move the device to the desired position, and the brake wheel 9 should be tightened. Then, manually turn the adjusting disc 111 clockwise to drive the screw 11 to rotate. The rotation of the screw 11 can drive the support base plate 12 to move downward along the guide rod 121, so that the damping pad 13 at the bottom of the support base plate 12 can effectively abut against the ground, and the device can be parked smoothly. Then, the raw materials for mixing acid fracturing fluid can be fed into the interior of the mixing drum 1 from the feed branch pipe 21, and controlled by the controller 4. The first motor 3 and the second motor 6 are driven to rotate. The rotation of the first motor 3 drives the stirring shaft 14 and the stirring blades 141 to rotate. The rotation of the second motor 6 can drive the stirring frame 15 to rotate in the opposite direction. The stirring blades 141 and the stirring frame 15 mix the raw materials inside the mixing tank 1, so that the raw materials inside the mixing tank 1 can be fully and efficiently mixed. After the acid fracturing fluid is mixed, the solenoid valve 8 is opened by the controller 4, and the mixed acid fracturing fluid inside the mixing tank 1 can be discharged through the drainage branch pipe 7.

[0024] The text shows and describes the basic principles, main features and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part can all adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The machinery, parts and equipment can all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. This part will not be described in detail in the text.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. An acid fracturing fluid mixing device, comprising a mixing cylinder (1), characterized in that: The mixing cylinder (1) is equipped with a cylinder cover (2) at its top. A first motor (3) is fixedly installed on the top of the cylinder cover (2). The output end of the first motor (3) passes through the cylinder cover (2) and is fixedly connected to a stirring shaft (14). Stirring blades (141) are fixedly installed on the peripheral wall of the stirring shaft (14). A feed branch pipe (21) is fixedly installed through the top of the mixing cylinder (1) on one side of the first motor (3). A second motor (6) is fixedly installed at the bottom of the mixing cylinder (1). The output end of the second motor (6) extends into the interior of the mixing cylinder (1) and is sleeved and fixedly connected to a... The mixing rack (15) has a drain branch pipe (7) fixedly installed at the bottom of the mixing cylinder (1) in front of the second motor (6). The bottom of the mixing cylinder (1) is fixedly provided with support columns (5) in a rectangular array. The lower end of the support column (5) is provided with a brake wheel (9). The two support columns (5) on the same side are fixedly connected by a connecting plate (10). The middle part of the connecting plate (10) is threaded with a screw (11). The lower end of the screw (11) is movably connected to a support base plate (12) through a bearing. The bottom of the support base plate (12) is fixedly connected with a damping pad (13).

2. The acidizing fracturing fluid mixing device of claim 1, wherein, An adjusting disc (111) is sleeved and fixed at the upper end of the screw (11).

3. The acidizing fracturing fluid mixing device of claim 2, wherein, The top of the supporting base plate (12) is symmetrically fixed with guide rods (121), and the upper end of the guide rods (121) can movably pass through the connecting plate (10).

4. The acidizing fracturing fluid mixing device of claim 1, wherein, The two ends of the connecting plate (10) are respectively sleeved and fixed on the two support columns (5) on the same side.

5. The acidizing fracturing fluid mixing device of claim 1, wherein, A controller (4) is fixedly installed on the outer wall of the mixing cylinder (1), and an electromagnetic valve (8) is fixedly sleeved on the upper part of the drain branch pipe (7). The controller (4) is electrically connected to an external power supply through a wire. The first motor (3), the controller (4), and the second motor (6) are electrically connected to the controller (4) through wires respectively.

6. The acidizing fracturing fluid mixing device of claim 1, wherein, The upper end of the drain branch pipe (7) is connected to the interior of the mixing cylinder (1).

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