A fracturing fiber dosing device

Abstract

The utility model relates to a fracturing fiber feeding device relates to oil production technical field. The disc center of casing is rotatory connection power axle through bearing, and power axle is connected spiral impeller through the flat key in the casing, and spiral impeller left side board is opened annular air inlet, and casing is equipped with air outlet pipe in tangential direction, and power axle is connected cutting knife through the flat key in spiral impeller right side, and cutting knife is close to casing disc right side inner wall, and casing is equipped with feed pipe in cutting knife position. The utility model has the advantages of: using fan suction fiber material to promote to fracturing fluid mixing pool, through setting cutting knife in the inside of fan, and feeding mechanism is connected with power axle through worm gear reducer, when fiber material enters casing, the deceleration ratio of worm gear reducer decides the length of fiber material that is cut off by cutting knife, makes the length of fiber material that is cut off by cutting knife, improves fracturing effect, and changes the length of fiber material by replacing worm gear reducer of different speed ratio.

Description

Technical Field

[0001] This utility model relates to the field of oil production technology, and in particular to a fracturing fiber dosing device. Background Technology

[0002] In fiber-supported fracturing, the main function of fibers is to assist in the formation of the proppant filling layer, making the filling layer more stable. At the same time, they can also enhance the proppant carrying capacity of the fracturing fluid. Fibers are added to the fracturing fluid to prevent proppant backflow, return, or temporary plugging and diversion processes during oil and gas well fracturing. Fibers can improve the fracturing fluid's ability to transport proppant and maintain the stability of the proppant filling. The fiber material is in bundle form, and before use, it needs to be cut into a certain length and then sucked into the fracturing fluid mixing tank by a blower. Currently, the fiber material is mainly cut manually using a cutting machine, resulting in fiber materials of varying lengths, which reduces the fracturing effect. Utility Model Content

[0003] To address the problem of inconsistent fiber material lengths during existing oilfield fracturing operations, this invention provides a fracturing fiber feeding device.

[0004] The technical solution provided by this utility model is: a fiber fracturing device, including a shell, the shell being a disc-shaped hollow structure, the center of the disc being rotatably connected to a power shaft via a bearing, the power shaft being connected to a spiral impeller inside the shell via a key, the left side plate of the spiral impeller having an annular air inlet, the shell having an air outlet pipe tangentially, the power shaft being connected to a cutter on the right side of the spiral impeller via a key, the cutter being close to the inner wall of the right side of the disc, the shell having a feed pipe at the cutter position, the feed pipe having a rectangular structure, the upper part of the feed pipe having a horizontally arranged feed roller, the lower part of the feed pipe having a horizontally arranged follower wheel, the follower wheel being able to rotate freely with the feed pipe;

[0005] The right side of the power shaft extends out of the housing. The right side of the power shaft is connected to the input end of the worm gear reducer via a flat key. The worm gear reducer is connected to the housing via bolts. The output shaft of the worm gear reducer is connected to bevel gear A via a flat key. The feed roller is connected to the feed pipe via a bearing. One side of the feed roller extends out of the feed pipe. The feed roller is connected to bevel gear B via a flat key. Bevel gear B and bevel gear A are meshed and connected for transmission.

[0006] The feed pipe has a horizontally arranged pressure roller at the bottom of the feed roller. The pressure roller is connected to the bearing box on both sides by bearings. The feed pipe has an upper pressure plate and a lower pressure plate on the upper and lower sides of the bearing box. The upper pressure plate and the lower pressure plate are connected to the feed pipe by bolts. The upper pressure plate and the lower pressure plate press on the outside of the bearing box. The bearing box can move up and down. A compression spring is provided between the bearing box and the lower pressure plate.

[0007] The drive shaft extends out of the housing on the left side, and a pulley is connected to the left side of the drive shaft via a flat key.

[0008] The outer surface of the feed roller is provided with circumferentially distributed strip teeth.

[0009] The beneficial effects of this utility model are as follows: a blower is used to pump fibrous materials to the fracturing fluid mixing tank. A cutter is installed inside the blower. The feeding mechanism is connected to the power shaft through a worm gear reducer. When the fibrous materials enter the shell, the reduction ratio of the worm gear reducer determines the length of the fibrous materials cut by the cutter, so that the length of the fibrous materials cut is consistent, thereby improving the fracturing effect. The connection dimensions of the worm gear reducer of a certain model are the same. By changing the worm gear reducer with a different speed ratio, the length of the fibrous materials can be changed. Attached Figure Description

[0010] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Appendix Figure 2 It is attached Figure 1 Side view;

[0012] Appendix Figure 3 It is attached Figure 1 AA cross-section view;

[0013] Appendix Figure 4 Appendix Figure 2 Enlarged view of point B.

[0014] In the diagram, 1-shell, 2-drive shaft, 3-spiral impeller, 301-air inlet, 4-cutter, 5-feed pipe, 6-worm gear reducer, 7-air outlet pipe, 8-pulley, 9-feed roller, 901-strip tooth, 10-pressing roller, 11-follower wheel, 12-umbrella tooth A, 13-umbrella tooth B, 14-bearing box, 15-lower pressure plate, 16-upper pressure plate. Detailed Implementation

[0015] like Figures 1-4 As shown, a fiber fracturing device includes a housing 1, which is a disc-shaped hollow structure. The center of the disc of the housing 1 is rotatably connected to a power shaft 2 via a bearing. The power shaft 2 is connected to a spiral impeller 3 inside the housing 1 via a flat key. The left side plate of the spiral impeller 3 has an annular air inlet 301. The housing 1 is provided with an air outlet pipe 7 in the tangential direction. The power shaft 2 is connected to a cutter 4 on the right side of the spiral impeller 3 via a flat key. The cutter 4 is close to the inner wall of the right side of the disc of the housing 1. The housing 1 is provided with a feed pipe 5 at the position of the cutter 4. The feed pipe 5 has a rectangular structure. The upper part of the feed pipe 5 is provided with a horizontally arranged feed roller 9. The lower part of the feed pipe 5 is provided with a horizontally arranged follower wheel 11. The follower wheel 11 and the feed pipe 5 can rotate freely.

[0016] The right side of the power shaft 2 extends out of the housing 1. The right side of the power shaft 2 is connected to the input end of the worm gear reducer 6 via a flat key. The worm gear reducer 6 is connected to the housing 1 via bolts. The output shaft of the worm gear reducer 6 is connected to the bevel gear A12 via a flat key. The feed roller 9 is connected to the feed pipe 5 via a bearing. One side of the feed roller 9 extends out of the feed pipe 5. The feed roller 9 is connected to the bevel gear B13 via a flat key. The bevel gear B13 and the bevel gear A12 are meshed and connected for transmission.

[0017] The fan consists of a housing 1, a power shaft 2, and a spiral impeller 3. The fan draws fibrous material to the fracturing fluid mixing tank. A feeding mechanism is formed by a cutter 4, a feed pipe 5, a feed roller 9, and a follower wheel 11 installed inside the fan. The feeding mechanism is connected to the power shaft 2 via a worm gear reducer 6. When the fibrous material enters the housing 1, the reduction ratio of the worm gear reducer 6 determines the length of the fibrous material cut by the cutter 4, ensuring that the length of the fibrous material is cut is consistent and improving the fracturing effect. The connection dimensions of the worm gear reducer 6 are the same for a certain model. By changing the worm gear reducer 6 with different speed ratios, the length of the fibrous material can be changed.

[0018] The feed pipe 5 has a horizontally arranged pressing roller 10 at the lower part of the feed roller 9. The pressing roller 10 is connected to the bearing box 14 on both sides by bearings. The feed pipe 5 has an upper pressing plate 16 and a lower pressing plate 15 on the upper and lower sides of the bearing box 14. The upper pressing plate 16 and the lower pressing plate 15 are connected to the feed pipe 5 by bolts. The upper pressing plate 16 and the lower pressing plate 15 press against the outside of the bearing box 14. The bearing box 14 can move up and down. A compression spring is provided between the bearing box 14 and the lower pressing plate 15. The pressing roller 10 can move up and down elastically, which can effectively clamp the incoming fiber material and ensure the length of the fiber material is cut.

[0019] The left side of the power shaft 2 extends out of the housing 1. The left side of the power shaft 2 is connected to the pulley 8 via a flat key. Power is transmitted to the motor via belt drive. When the motor is overloaded, the belt slips, which can effectively protect the motor.

[0020] The outer surface of the feed roller 9 is provided with circumferentially distributed strip teeth 901, which helps to catch the fibrous material.

Claims

1. A fiber fracturing device, comprising a housing (1), characterized in that: The shell (1) is a disc-shaped hollow structure. The center of the disc of the shell (1) is connected to the power shaft (2) through a bearing. The power shaft (2) is connected to the spiral impeller (3) inside the shell (1) through a flat key. The left side plate of the spiral impeller (3) has an annular air inlet (301). The shell (1) is provided with an air outlet pipe (7) in the tangential direction. The power shaft (2) is connected to the cutter (4) on the right side of the spiral impeller (3) through a flat key. The cutter (4) is close to the inner wall of the right side of the disc of the shell (1). The shell (1) is provided with a feed pipe (5) at the position of the cutter (4). The feed pipe (5) has a rectangular structure. The upper part of the feed pipe (5) is provided with a horizontally arranged feed roller (9). The lower part of the feed pipe (5) is provided with a horizontally arranged follower wheel (11). The follower wheel (11) and the feed pipe (5) can rotate freely. The right side of the power shaft (2) extends out of the housing (1). The right side of the power shaft (2) is connected to the input end of the worm gear reducer (6) via a flat key. The worm gear reducer (6) is connected to the housing (1) via bolts. The output shaft of the worm gear reducer (6) is connected to the bevel gear A (12) via a flat key. The feed roller (9) is connected to the feed pipe (5) via a bearing. The feed roller (9) extends out of the feed pipe (5) on one side. The feed roller (9) is connected to the bevel gear B (13) via a flat key. The bevel gear B (13) and the bevel gear A (12) are meshed and connected.

2. The fiber fracturing device according to claim 1, characterized in that: The feed pipe (5) has a horizontally arranged pressure roller (10) at the bottom of the feed roller (9). The pressure roller (10) is connected to the bearing box (14) on both sides by bearings. The feed pipe (5) has an upper pressure plate (16) and a lower pressure plate (15) on the upper and lower sides of the bearing box (14). The upper pressure plate (16) and the lower pressure plate (15) are connected to the feed pipe (5) by bolts. The upper pressure plate (16) and the lower pressure plate (15) press on the outside of the bearing box (14). The bearing box (14) can move up and down. A compression spring is provided between the bearing box (14) and the lower pressure plate (15).

3. The fiber fracturing device according to claim 1, characterized in that: The power shaft (2) extends out of the housing (1) on the left side, and the power shaft (2) is connected to the pulley (8) on the left side via a flat key.

4. The fiber fracturing device according to claim 1, characterized in that: The outer surface of the feed roller (9) is provided with circumferentially distributed strip teeth (901).

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