A fracturing flowback fluid separation device for oil exploitation

Abstract

The utility model relates to fracturing flowback fluid separation technical field, and disclose a fracturing flowback fluid separation device for oil exploitation, including air float machine, connect the slag transmission structure of scraping of air float machine, connect the base of slag transmission structure on and connect the slag plate of base on, the one end of base is provided with the slot, the bottom fixed connection of slag plate has the corresponding plug -in board of slot, the outer wall of base is equipped with the plugging board, is connected with two screws on the plugging board, the utility model discloses the cooperation of plug -in board and slot, the replacement mode of slag plate is optimized for the convenient plug -in type structure from the traditional multiple bolt dismounting, has promoted the convenience and efficiency of replacement. Meanwhile, by setting up the plugging board and screw, originally multiple fixed bolts are simplified to only two, not only reduce the number of parts, also avoid the inconvenience of operation brought by frequent dismounting, further improve the convenience of maintenance.

Description

Technical Field

[0001] This utility model relates to the field of fracturing flowback fluid separation technology, specifically a fracturing flowback fluid separation device used in oil extraction. Background Technology

[0002] Fracturing flowback fluid is a special type of wastewater discharged from the formation after fracturing operations in oil and gas fields. Fracturing operations involve injecting high-pressure fluid (fracturing fluid) into the ground to fracture oil and gas reservoirs, creating a network of fractures to increase permeability and production. After the operation, some of the injected fracturing fluid mixes with native formation fluids (including crude oil and formation water) and flows back to the surface along the wellbore, forming fracturing flowback fluid. Dissolved air flotation (DAF) machines are used to treat fracturing flowback fluid. The principle is that the DAF machine injects microbubbles into the wastewater, causing suspended solids, oil, and other contaminants (with densities close to or less than water) to adhere to the bubbles. These contaminants float to the surface, forming scum, which is then removed by a scraper (a chain and transmission structure), thus purifying the water.

[0003] Currently, the slag scraping device in dissolved air flotation machines typically uses a chain drive structure, with the scraper plate fixed to a mounting plate between the drive chains by multiple sets of bolts. However, when the scraper plate needs maintenance or replacement, it is necessary to remove each of the multiple sets of bolts between the scraper plate and the mounting plate, which is cumbersome, time-consuming, and inconvenient. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a fracturing flowback fluid separation device for oil extraction, making the replacement of the scraper blades more convenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fracturing flowback fluid separation device for oil extraction, comprising an air flotation machine, a scraping drive structure connected to the air flotation machine, a base connected to the scraping drive structure, and a scraping plate connected to the base. One end of the base is provided with a slot, and the bottom of the scraping plate is fixedly connected with an insert plate corresponding to the slot. The outer wall of the base is provided with a sealing plate, and two screws are connected to the sealing plate. The two screws pass through one end of the sealing plate and are threadedly connected to the base.

[0006] Furthermore, the base has a slot on the top surface of one end of the sealing plate, and a corresponding card block is fixedly connected to the bottom surface of the sealing plate.

[0007] Furthermore, the insert plate is vertically slidably connected within the slot, a base plate is connected to the bottom of the insert plate, multiple springs are fixedly connected to the top of the base plate, the other end of the springs is fixedly connected to the bottom of the insert plate, and an adjustment structure for adjusting the lifting and lowering of the insert plate is fixedly connected to the outer wall of the base.

[0008] Furthermore, the adjustment structure includes multiple wedge blocks, which are slidably connected to the base. All wedge blocks pass through one end of the base and abut against the bottom of the insert plate. The wedge blocks are located between the base plate and the insert plate. Multiple L-shaped plates corresponding to the wedge blocks are fixedly connected to the outer wall of the base. The wedge blocks are slidably connected to the L-shaped plates. A threaded rod is rotatably connected to the outer wall of the wedge block located in the middle position. The outer end of the threaded rod passes through the L-shaped plate and is threadedly connected to it.

[0009] Furthermore, a limiting groove is provided on the top of the L-shaped plate, and a limiting slide plate that is fixedly connected to the top of the wedge block is slidably connected in the limiting groove.

[0010] Furthermore, a rotating handle is fixedly connected to the outer end of the threaded rod on the side away from the wedge block.

[0011] Furthermore, connecting plates are fixedly connected to both outer walls of the wedge block with the threaded rod, and both connecting plates are fixedly connected to the corresponding wedge block.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention optimizes the replacement method of the scraper plate from the traditional multi-bolt disassembly to a convenient plug-in structure through the cooperation of the insert plate and the slot, improving the ease and efficiency of replacement. At the same time, by setting a sealing plate and screws, the original multiple fixing bolts are simplified to only two, not only reducing the number of parts but also avoiding the inconvenience of frequent disassembly, further improving the convenience of maintenance. This structure is simple, easy to operate, and highly practical. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a three-dimensional structural diagram of the slag scraping transmission structure and the slag scraping plate of this utility model; Figure 3 This is a three-dimensional structural diagram of a partial view of the slag scraper and base of this utility model; Figure 4 For this Figure 3 A magnified three-dimensional structural diagram of A in the middle; Figure 5 This is a three-dimensional cross-sectional structural diagram of a portion of the base and scraper of this utility model; Figure 6 This is a three-dimensional structural diagram of a partial state of the base plate, spring, and insert plate of this utility model.

[0014] In the diagram: 1. Air flotation machine; 2. Slag scraping transmission structure; 3. Base; 4. Slag scraper; 5. Insert plate; 6. L-shaped plate; 7. Wedge block; 8. Connecting plate; 9. Limiting slide plate; 10. Slot; 11. Screw; 12. Slot; 13. Limiting slide groove; 14. Threaded rod; 15. Rotary handle; 16. Base plate; 17. Spring. Detailed Implementation

[0015] 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.

[0016] like Figures 1 to 6 As shown, a fracturing flowback fluid separation device for oil extraction includes an air flotation machine 1, a scraper drive structure 2 connected to the air flotation machine 1, a base 3 connected to the scraper drive structure 2, and a scraper plate 4 connected to the base 3. One end of the base 3 is provided with a slot 9, and the bottom of the scraper plate 4 is fixedly connected with an insert plate 41 corresponding to the slot 9. The outer wall of the base 3 is provided with a sealing plate 10, and two screws 11 are connected to the sealing plate 10. The two screws 11 pass through one end of the sealing plate 10 and are threadedly connected to the base 3.

[0017] like Figures 1 to 6 As shown, in the petroleum fracturing flowback fluid separation device of this utility model, after impurities float to the surface, the scraper drive structure 2 rotates, driving the base 3 and scraper plate 4 to rotate, discharging the scum in the flotation machine 1. When the scraper plate 4 needs to be repaired or replaced, the screws 11 on the two sealing plates 10 at one end of the base 3 can be removed, so that the insert plate 41 loses its limit and the scraper plate 4 can be pulled out, driving the insert plate 41 to be pulled out from the slot 9 in the base 3. Then, a new scraper plate 4 can be replaced by sliding the new scraper plate 4 into the slot 9 in the base 3. Finally, the sealing plate 10 and the screws 11 are fixed to complete the replacement.

[0018] By using the insertion plate 41 and the slot 9, the replacement method of the scraper plate 4 is optimized from the traditional multi-bolt disassembly to a convenient plug-in structure, improving the ease and efficiency of replacement. At the same time, by setting the sealing plate 10 and the screw 11, the original multiple fixing bolts are simplified to only two, which not only reduces the number of parts, but also avoids the inconvenience of frequent disassembly, further improving the convenience of maintenance.

[0019] like Figure 3 and Figure 4As shown, a slot 12 is provided on the top surface of one end of the sealing plate 10 of the base 3, and a corresponding locking block is fixedly connected to the bottom surface of the sealing plate 10. When it is necessary to seal the insert plate 41, the sealing plate 10 is placed at one end of the base 3, and the locking block is engaged with the slot 12, thus limiting the vertical direction of the sealing plate 10. Then, the sealing plate 10 is fixed to the base 3 with screws 11 to ensure that the insert plate 41 is stably fixed in the base 3.

[0020] like Figure 3 and Figure 5 As shown, the insert plate 41 is vertically slidably connected within the slot 9. The bottom of the insert plate 41 is connected to the base plate 16. Multiple springs 17 are fixedly connected to the top of the base plate 16. The other end of the springs 17 is fixedly connected to the bottom of the insert plate 41. An adjustment structure for adjusting the lifting and lowering of the insert plate 41 is fixedly connected to the outer wall of the base 3.

[0021] like Figure 3 and Figure 5 As shown, the adjustment structure includes multiple wedge blocks 6, which are slidably connected to the base 3. All wedge blocks 6 pass through one end of the base 3 and abut against the bottom of the insert plate 41. The wedge blocks 6 are located between the base plate 16 and the insert plate 41. Multiple L-shaped plates 5 corresponding to the wedge blocks 6 are fixedly connected to the outer wall of the base 3. The wedge blocks 6 are slidably connected to the L-shaped plates 5. The outer wall of the wedge block 6 located in the middle position is rotatably connected to a threaded rod 14. The outer end of the threaded rod 14 passes through the L-shaped plate 5 and is threadedly connected to it.

[0022] Specifically, to facilitate the adjustment of the depth of the scraper plate 4 when scraping scum, the threaded rod 14 can be rotated, causing the threaded rod 14 to rotate threadedly with the L-shaped plate 5. The front end of the threaded rod 14 is rotatably connected to the wedge block 6, allowing the wedge block 6 to slide within the base 3. This causes the front end of the wedge block 6 to abut against the bottom surface of the insert plate 41, with the front end of the wedge block 6 positioned precisely between the base plate 16 and the insert plate 41. Simultaneously, the base plate 16 is in contact with and slidably connected to the bottom surface of the slot 9. Thus, when the wedge block 6 moves forward, the insert plate 41 extends outward. At this time, the base plate... 16 is always in contact with the bottom surface of the slot 9 and is limited by the wedge block 6. The spring 17 is stretched. When the wedge block 6 retracts, the insert plate 41 retracts. The spring 17 contracts to keep the insert plate 41 taut. In this way, the wedge block 6 moves forward and the insert plate 41 moves up and down in the slot 9. This allows the insert plate 41 to drive the scraper plate 4 to rise and fall on the base 3, thereby adjusting the depth of scum scraping. The threaded rod 14 on the L-shaped plate 5 can limit the position of the wedge block 6 by using the thread, which can ensure that the insert plate 41 is fixed after the wedge block 6 is adjusted.

[0023] The positions of multiple springs 17 are staggered from the positions of the wedge block 6 to ensure that the forward and backward movement of the wedge block 6 is not obstructed by the springs 17. The springs 17 can be made of stainless steel or high-temperature alloy to ensure that they can be used in environments with oil stains and corrosion, and to ensure that the springs 17 pull the insert plate 41 backward.

[0024] like Figure 5 As shown, a handle 15 is fixedly connected to the outer end of the threaded rod 14 on the side away from the wedge block 6. The handle 15 facilitates the rotation of the threaded rod 14.

[0025] like Figure 5 As shown, a limiting groove 13 is provided on the top of the L-shaped plate 5, and a limiting slide plate 8, which is fixedly connected to the top of the wedge block 6, is slidably connected in the limiting groove 13. When the wedge block 6 moves back and forth, the limiting slide plate 8 moves back and forth in the limiting groove 13.

[0026] like Figure 2 and Figure 3 As shown, connecting plates 7 are fixedly connected to the outer walls of both sides of the wedge block 6 with the threaded rod 14, and both connecting plates 7 are fixedly connected to the corresponding wedge block 6. The connecting plates 7 enable the wedge block 6 with the threaded rod 14 to move back and forth, which in turn drives the wedge blocks 6 on both sides to move back and forth.

[0027] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A fracturing flowback fluid separation device for oil extraction, comprising an air flotation unit (1), a scraper drive structure (2) connected to the air flotation unit (1), a base (3) connected to the scraper drive structure (2), and a scraper plate (4) connected to the base (3), characterized in that, The base (3) has a slot (9) at one end. The bottom of the scraper (4) is fixedly connected to a plate (41) corresponding to the slot (9). The outer wall of the base (3) is provided with a sealing plate (10). Two screws (11) are connected to the sealing plate (10). The two screws (11) pass through one end of the sealing plate (10) and are threaded to the base (3).

2. The fracturing flowback fluid separation device for oil extraction according to claim 1, characterized in that, The base (3) has a slot (12) on the top surface of one end of the sealing plate (10), and the bottom surface of the sealing plate (10) is fixedly connected with a card block corresponding to the slot (12).

3. The fracturing flowback fluid separation device for oil extraction according to claim 2, characterized in that, The insert plate (41) is vertically slidably connected in the slot (9). The bottom of the insert plate (41) is connected to a base plate (16). The top of the base plate (16) is fixedly connected to a plurality of springs (17). The other end of the springs (17) is fixedly connected to the bottom of the insert plate (41). The outer wall of the base (3) is fixedly connected to an adjustment structure for adjusting the lifting of the insert plate (41).

4. The fracturing flowback fluid separation device for oil extraction according to claim 3, characterized in that, The adjustment structure includes multiple wedge blocks (6), which are slidably connected to the base (3). All the wedge blocks (6) pass through one end of the base (3) and abut against the bottom of the insert plate (41). The wedge block (6) passes through one end of the base (3) and is located between the base plate (16) and the insert plate (41). Multiple L-shaped plates (5) corresponding to the wedge blocks (6) are fixedly connected to the outer wall of the base (3). The wedge blocks (6) are slidably connected to the L-shaped plates (5). The outer wall of the wedge block (6) located in the middle position is rotatably connected to a threaded rod (14). The outer end of the threaded rod (14) passes through the L-shaped plate (5) and is threadedly connected to it.

5. A fracturing flowback fluid separation device for oil extraction according to claim 4, characterized in that, A handle (15) is fixedly connected to the outer end of the threaded rod (14) on the side away from the wedge block (6).

6. A fracturing flowback fluid separation device for oil extraction according to claim 5, characterized in that, The top of the L-shaped plate (5) is provided with a limiting groove (13), and a limiting slide plate (8) that is fixedly connected to the top of the wedge block (6) is slidably connected in the limiting groove (13).

7. A fracturing flowback fluid separation device for oil extraction according to claim 6, characterized in that, The outer walls of both sides of the wedge block (6) with the threaded rod (14) are fixedly connected with connecting plates (7), and both connecting plates (7) are fixedly connected to the corresponding wedge block (6).

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