Dissolving device suitable for high-concentration powder drag reducer

Abstract

The utility model discloses a dissolving device suitable for high-concentration powder drag reducer, which comprises a driving box, a dissolving tank and a feeding device, the driving box is mounted at the upper end of the dissolving tank and communicated with the dissolving tank, the feeding device and a water inlet pipe are further arranged at the upper end of the dissolving tank, a transmission mechanism is arranged in the driving box, and the feeding device is communicated with the water inlet pipe. The transmission mechanism is connected with a motor box through a connecting rod, a driving motor b is arranged in the motor box, the power output end of the driving motor b is connected with a rotating rod, and a stirring piece is arranged at the end of the rotating rod and located in the dissolving tank. The feeding device uniformly scatters the dry powder drag reducer and then guides the dry powder drag reducer into the dissolving tank, the water inlet pipe injects water into the dissolving tank, the transmission mechanism drives the motor box to move, and the driving motor b drives the stirring blade to rotate, so that the stirring blade performs reciprocating stirring in the dissolving tank, stirring is more uniform, dissolving is more sufficient, and the dissolving efficiency is improved. The problem that the local dissolving effect is poor due to the fact that the position of a stirring rod is fixed when a high-concentration powder drag reducer is prepared in a laboratory at present is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drag reducer dissolving equipment, in particular to a dissolving device suitable for high-concentration powdered drag reducer. Background Art

[0002] Drag reducer is a high molecular polymer that reduces the resistance encountered by fluids during transportation. As the most important additive in fracturing fluids, it is the key to the success or failure of the fracturing process. Commonly used fracturing fluid drag reducers are mainly polyacrylamide, which can be divided into emulsions, water-in-water types, suspensions, powders, etc. Among them, powder drag reducers have good drag reduction effects, but poor experimental solubility and easy agglomeration during the dissolution process. It is difficult for the laboratory to prepare high-concentration powder drag reducer solutions with good solubility. The existing laboratory preparation of high-concentration powder drag reducers has the following problems: Wu Yin's agitator can prepare high-concentration powder drag reducers, but it has the problem of uneven feeding and producing "fish eyes". At the same time, the high-speed rotation of the blades destroys the molecular structure of the drag reducer, causing it to fail; the vertical agitator has insufficient stirring speed, uneven feeding, and the position of the stirring rod is fixed, resulting in poor dissolution of the powder drag reducer and the production of a large number of flocs. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a dissolving device suitable for high-concentration powder drag reducer.

[0004] The purpose of the utility model is achieved through the following technical solutions: a dissolving device suitable for high-concentration powder drag reducer, comprising a drive box, a dissolving tank and a feeding device, the drive box is installed at the upper end of the dissolving tank, and the drive box is connected to the dissolving tank, the upper end of the dissolving tank is also provided with a feeding device and a water inlet pipe, the feeding device and the water inlet pipe are located on opposite sides of the drive box, a transmission mechanism is provided in the drive box, the transmission mechanism is connected to the motor box through a connecting rod, a drive motor b is provided in the motor box, the power output end of the drive motor b is connected to the rotating rod, the end of the rotating rod is provided with a stirring blade, and the stirring blade is located in the dissolving tank.

[0005] Preferably, the transmission mechanism includes a drive motor a, which is installed on the side wall of the drive box. The power output end of the drive motor a is connected to the rotating shaft, the rotating shaft passes through the fixed plate, and the end of the rotating shaft is connected to the driving gear, the driving gear is engaged with the first driven gear, the first driven gear is engaged with the second driven gear, and the second driven gear is located directly below the driving gear. The second driven gear is located on the driving gear and is equipped with a fixing column, and the end of the fixing column is connected to the connecting rod.

[0006] Preferably, the driving gear, the first driven gear and the second driven gear are all mounted on the fixed plate.

[0007] Preferably, both sides of the fixing plate are fixedly connected to the inner side walls of the driving box via horizontal plates, and the upper end of the fixing plate is fixedly connected to the upper wall of the driving box via vertical plates.

[0008] Preferably, a vertical baffle is provided on the inner wall of the dissolving tank, and the outer wall of the dissolving tank is covered with an electric heating sleeve, a support frame is welded to the bottom of the dissolving tank, a base is provided at the bottom of the support frame, a discharge pipe is provided on the lower surface of the dissolving tank, and a valve b is provided on the discharge pipe.

[0009] Preferably, the height ratio of the connecting rod to the dissolving tank is 1:1 to 1:5.

[0010] Preferably, the vertical baffle is corrugated.

[0011] Preferably, the feeding device includes a feeding barrel and a dispersion barrel, the discharge port of the feeding barrel is connected to the dispersion barrel, a feeding hopper is provided on the feeding barrel, a material control baffle is provided on the feeding hopper, a driving motor c is installed on the side wall of the feeding barrel, the power output end of the driving motor c is connected to the spiral sheet inside the feeding barrel, a funnel tube is also provided in the dispersion barrel, the lower end of the funnel tube passes through the dispersion barrel and is located in the dissolving tank, and a spiral blade is provided on the inner wall of the lower end of the funnel tube, a high-pressure air pipe is provided at the upper end of the dispersion barrel, a gate valve is provided on the high-pressure air pipe, a blowing hole is provided below the air outlet of the high-pressure air pipe, and the blowing hole is located above the funnel tube.

[0012] Preferably, a control box is provided at the upper end of the drive box, a temperature sensor is provided on the control box, and a power interface, a power switch, a speed control knob a, a speed control knob b, a speed control knob c and a temperature control knob are provided on the surface of the control box, and the speed control knob a is electrically connected to the drive motor a, the speed control knob b is electrically connected to the drive motor b, the speed control knob c is electrically connected to the drive motor c, and the temperature control knob is electrically connected to the electric heating sleeve.

[0013] Preferably, 4 to 8 heating wires are arranged in the electric heating jacket.

[0014] The utility model has the following advantages: the utility model evenly breaks up the dry powder drag reducer through the feeding device and then introduces it into the dissolution tank, and at the same time injects water into the dissolution tank through the water inlet pipe, and then drives the motor box to move and the driving motor B to drive the stirring piece to rotate, so that the stirring piece performs reciprocating stirring in the dissolution tank, making the stirring more uniform and the dissolution more complete, solving the problem of poor local dissolution effect due to the fixed position of the stirring rod in the current laboratory preparation of high-concentration powder drag reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the dissolution device;

[0016] Figure 2 It is the structural diagram of the control box;

[0017] Figure 3 It is a structural diagram of the transmission mechanism;

[0018] Figure 4 It is a structural diagram of the feeding device;

[0019] In the figure, 1-driving box, 2-dissolving tank, 3-feeding device, 4-control box, 5-temperature sensor, 6-power interface, 7-power switch, 8-speed knob a, 9-speed knob b, 10-speed knob c, 11-temperature control knob, 12-driving motor a, 13-rotating shaft, 14-fixed plate, 15-vertical plate, 16-horizontal plate, 17-driving gear, 18-first driven gear, 19-second driven gear, 20-fixed column, 21-connecting rod, 22-motor box, 23-drive motor b, 24-rotating rod, 25-stirring blade, 26-feed hopper, 27-material control baffle, 28-drive motor c, 29-feeding barrel, 30-dispersion barrel, 31-high-pressure air pipe, 32-gate valve, 33-blowing hole, 34-funnel tube, 35-spiral blade, 36-water inlet pipe, 37-valve a, 38-electric heating jacket, 39-vertical baffle, 40-support frame, 41-base, 42-discharge pipe, 43-valve b. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] In this embodiment, if Figure 1 As shown, a dissolving device suitable for high-concentration powder drag reducers includes a drive box 1, a dissolving tank 2, and a feeding device 3. The drive box 1 is installed at the upper end of the dissolving tank 2 and is connected to the dissolving tank 2. The upper end of the dissolving tank 2 is also provided with a feeding device 3 and a water inlet pipe 36. The feeding device 3 and the water inlet pipe 36 are located on opposite sides of the drive box 1. The water inlet pipe 36 is provided with a valve a37. A transmission mechanism is provided in the drive box 1, and the transmission mechanism is connected to the motor box 22 via a connecting rod 21. Preferably, the height ratio of the connecting rod 21 to the dissolving tank 2 is 1:1 to 1:5. A drive motor b23 is provided in the motor box 22. The power output end of the drive motor b23 is connected to the rotating rod 24. The end of the rotating rod 24 is provided with a stirring blade 25, and the stirring blade 25 is located in the dissolving tank 2. The dry powder drag reducer is evenly dispersed through the feeding device 3 and introduced into the dissolution tank 2. Water is then injected into the dissolution tank 2 through the water inlet pipe 36. The transmission mechanism then drives the motor box 22 to move, and the drive motor b23 to rotate the stirring blades 25. This causes the stirring blades 25 to perform reciprocating stirring within the dissolution tank 2, resulting in more uniform stirring and more complete dissolution. This solves the current problem of poor localized dissolution of high-concentration powder drag reducers in the laboratory due to the fixed position of the stirring rod. In this embodiment, the stirring blades 25 are stainless steel blades, six in number, symmetrically arranged along the rotating rod 24. Each stirring blade 25 has a diameter of 5 cm.

[0027] In this embodiment, if Figure 2 As shown, a control box 4 is provided at the top of the drive box 1, on which a temperature sensor 5 is provided. The surface of the control box 4 is provided with a power interface 6, a power switch 7, a speed knob a8, a speed knob b9, a speed knob c10, and a temperature control knob 11. The speed knob a8 is electrically connected to the drive motor a12, the speed knob b9 is electrically connected to the drive motor b23, the speed knob c10 is electrically connected to the drive motor c28, and the temperature control knob 11 is electrically connected to the electric heating jacket 38. Specifically, the speed knob a8 corresponds to a speed range of 0 to 2000 r / min; the speed knob b9 corresponds to a speed range of 0 to 5000 r / min; the speed knob c10 corresponds to a speed range of 0 to 1000 r / min; and the temperature control knob 11 corresponds to a temperature scale range of 30°C to 100°C.

[0028] Further, such as Figure 3 As shown, the transmission mechanism includes a drive motor a12, which is mounted on the side wall of the drive box 1. The power output end of the drive motor a12 is connected to the rotating shaft 13, which passes through the fixed plate 14, and the end of the rotating shaft 13 is connected to the driving gear 17. The driving gear 17 is meshed with the first driven gear 18, and the first driven gear 18 is meshed with the second driven gear 19. The second driven gear 19 is located directly below the driving gear 17. The second driven gear 19 is located on the driving gear 17 and is mounted with a fixing column 20. The end of the fixing column 20 is connected to the connecting rod 21. Furthermore, the driving gear 17, the first driven gear 18, and the second driven gear 19 are all mounted on the fixed plate 14. Preferably, both sides of the fixed plate 14 are fixedly connected to the inner side wall of the drive box 1 through the horizontal plate 16, and the upper end of the fixed plate 14 is fixedly connected to the upper wall of the drive box 1 through the vertical plate 15. Specifically, water is injected into the dissolution tank 2 through the water inlet pipe 36. At this time, the staff controls the drive motor b23 to start through the speed control knob b9, and the drive motor b23 drives the stirring blade 25 to rotate, thereby stirring the liquid water, and then the dry powder drag reducer is evenly dispersed through the feeding device 3 and introduced into the dissolution tank 2. When the powder drag reducer has all entered the dissolution tank 2, the staff controls the drive motor a12 to start through the speed control knob a8, and the drive motor a12 drives the drive gear 17 to rotate clockwise, and the first driven gear 18 is engaged with the drive gear 17, thereby driving the first driven gear 18 to rotate counterclockwise, and then driving the second driven gear 19 to rotate clockwise, and finally making the drive gear 17 and the second driven gear 19 rotate synchronously, thereby driving the position of the stirring blade 25 to change, so that the stirring blade 25 can stir the mixed liquid back and forth in all directions, making the stirring more uniform.

[0029] In this embodiment, a vertical baffle 39 is installed on the inner wall of the dissolution tank 2. Preferably, the vertical baffle 39 is corrugated. The outer wall of the dissolution tank 2 is covered with an electric heating jacket 38. A support frame 40 is welded to the bottom of the dissolution tank 2, and a base 41 is installed at the bottom of the support frame 40. A discharge pipe 42 is installed on the lower surface of the dissolution tank 2, and a valve b43 is installed on the discharge pipe 42. Specifically, the main function of the vertical baffle 39 is to prevent the "swirl" phenomenon formed during the stirring process and ensure more uniform dissolution. The main function of the electric heating jacket 38 is to heat the drag reducer solution, accelerate its dissolution, and obtain the desired high-concentration fracturing fluid. In this embodiment, the electric heating jacket 38 is equipped with 4 to 8 heating wires.

[0030] In this embodiment, if Figure 4 As shown, the feeding device 3 includes a feeding barrel 29 and a dispersion barrel 30, the discharge port of the feeding barrel 29 is connected to the dispersion barrel 30, a feeding hopper 26 is provided on the feeding barrel 29, and a material control baffle 27 is provided on the feeding hopper 26, a driving motor c28 is installed on the side wall of the feeding barrel 29, and the power output end of the driving motor c28 is connected to the spiral sheet inside the feeding barrel 29, and a funnel tube 34 is also provided in the dispersion barrel 30, the lower end of the funnel tube 34 passes through the dispersion barrel 30 and is located in the dissolving tank 2, and a spiral blade 35 is provided on the inner wall of the lower end of the funnel tube 34, and a high-pressure air pipe 31 is provided at the upper end of the dispersion barrel 30, a gate valve 32 is provided on the high-pressure air pipe 31, and a blowing hole 33 is provided below the air outlet of the high-pressure air pipe 31, and the blowing hole 33 is located above the funnel tube 34. Specifically, the material is poured into the feeding barrel 29 through the feeding hopper 26, and the speed control knob c10 controls the start of the driving motor c28, which drives the spiral blade to rotate. The spiral blade disperses the material into the dispersion barrel 30, and then blows air into the dispersion barrel 30 through the blowing hole 33 through the high-pressure air pipe 31, so that the dry powder drag reducer is dispersed more fully, effectively preventing the accumulation of powder and the agglomeration phenomenon that affects the dissolution effect of the powder drag reducer.

[0031] 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 scope of protection of the present invention.

Claims

1. A dissolving device suitable for high-concentration powder drag reducer, characterized by: The invention comprises a driving box (1), a dissolving tank (2) and a feeding device (3), wherein the driving box (1) is installed at the upper end of the dissolving tank (2), and the driving box (1) is communicated with the dissolving tank (2), and the feeding device (3) and the water inlet pipe (36) are also provided at the upper end of the dissolving tank (2), and the feeding device (3) and the water inlet pipe (36) are located on different sides of the driving box (1), and a transmission mechanism is provided in the driving box (1), and the transmission mechanism is connected to the motor box (22) through a connecting rod (21), and a driving motor b (23) is provided in the motor box (22), and the power output end of the driving motor b (23) is connected to the rotating rod (24), and the end of the rotating rod (24) is provided with a stirring blade (25), and the stirring blade (25) is located in the dissolving tank (2).

2. The dissolving device for high-concentration powdered drag reducer according to claim 1, characterized in that: The transmission mechanism includes a driving motor a (12), which is mounted on the side wall of the driving box (1), and a power output end of the driving motor a (12) is connected to a rotating shaft (13), which passes through a fixed plate (14), and an end of the rotating shaft (13) is connected to a driving gear (17), and the driving gear (17) is meshed with a first driven gear (18), and the first driven gear (18) is meshed with a second driven gear (19), and the second driven gear (19) is located directly below the driving gear (17), and the second driven gear (19) is located on the driving gear (17). A fixing column (20) is installed on each of the fixing columns (20), and the end of the fixing column (20) is connected to the connecting rod (21).

3. The dissolving device for high-concentration powdered drag reducer according to claim 2, characterized in that: The driving gear (17), the first driven gear (18) and the second driven gear (19) are all mounted on the fixing plate (14).

4. The dissolving device for high-concentration powdered drag reducer according to claim 3, characterized in that: Both sides of the fixed plate (14) are fixedly connected to the inner side walls of the drive box (1) via horizontal plates (16), and the upper end of the fixed plate (14) is fixedly connected to the upper wall of the drive box (1) via vertical plates (15).

5. The dissolving device for high-concentration powdered drag reducer according to claim 4, characterized in that: A vertical baffle (39) is provided on the inner wall of the dissolving tank (2), and an electric heating jacket (38) is covered on the outer wall of the dissolving tank (2). A support frame (40) is welded to the bottom of the dissolving tank (2), and a base (41) is provided at the bottom of the support frame (40). A discharge pipe (42) is provided on the lower surface of the dissolving tank (2), and a valve b (43) is provided on the discharge pipe (42).

6. The dissolving device for high-concentration powdered drag reducer according to claim 5, characterized in that: The height ratio of the connecting rod (21) to the dissolving tank (2) is 1:1 to 1:

5.

7. The dissolving device for high-concentration powdered drag reducer according to claim 6, characterized in that: The vertical baffle (39) is corrugated.

8. The dissolving device for high-concentration powdered drag reducer according to claim 7, characterized in that: The feeding device (3) includes a feeding barrel (29) and a dispersion barrel (30), the discharge port of the feeding barrel (29) is connected to the dispersion barrel (30), the feeding barrel (29) is provided with a feeding hopper (26), the feeding hopper (26) is provided with a material control baffle (27), a driving motor c (28) is installed on the side wall of the feeding barrel (29), the power output end of the driving motor c (28) is connected to the spiral sheet inside the feeding barrel (29), and the dispersion barrel (30) is provided with a feeding hopper (26). A funnel tube (34) is also provided. The lower end of the funnel tube (34) passes through the dispersion cylinder (30) and is located in the dissolution tank (2). A spiral blade (35) is provided on the inner wall of the lower end of the funnel tube (34). A high-pressure air pipe (31) is provided at the upper end of the dispersion cylinder (30). A gate valve (32) is provided on the high-pressure air pipe (31). A blowing hole (33) is provided below the air outlet of the high-pressure air pipe (31). The blowing hole (33) is located above the funnel tube (34).

9. The dissolving device for high-concentration powdered drag reducer according to claim 8, characterized in that: A control box (4) is provided at the upper end of the drive box (1), a temperature sensor (5) is provided on the control box (4), a power interface (6), a power switch (7), a speed control knob a (8), a speed control knob b (9), a speed control knob c (10) and a temperature control knob (11) are provided on the surface of the control box (4), and the speed control knob a (8) is electrically connected to the drive motor a (12), the speed control knob b (9) is electrically connected to the drive motor b (23), the speed control knob c (10) is electrically connected to the drive motor c (28), and the temperature control knob (11) is electrically connected to the electric heating sleeve (38).

10. The dissolving device for high-concentration powdered drag reducer according to claim 9, characterized in that: The electric heating jacket (38) is provided with 4 to 8 electric heating wires.

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