Micro-oxidation enhanced aeration device of water injection system

Abstract

The utility model provides a micro-oxidation enhanced aeration device of a water injection system. Relates to the technical field of aeration. An outlet pipeline of the air compressor is connected with an air inlet of the converter, the converter is provided with n air outlets, and each air outlet is connected with one aeration head through a pipeline. Compared with the prior art, the aeration device disclosed by the utility model has the following beneficial effects that by arranging the converter, all the aeration heads in each group are simultaneously aerated, and meanwhile, all the aeration heads can be respectively subjected to high-flow purging at regular time, so that the purpose that each aeration head can normally work is achieved, meanwhile, shutdown cleaning is avoided, the production efficiency is improved, the labor cost is reduced, and the production cost is reduced. The aeration head with the cutting strip rotating at a high speed on the inner side of the aeration hole is arranged, the flowing-out airflow is cut and crushed into tiny bubbles, and the tiny bubbles can greatly increase the surface area of air in sewage, make full contact with the sewage and oxidize reducing impurities in the sewage, so that the oxygen dissolution efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aeration, in particular to a micro-oxidation enhanced aeration device for a water injection system. Background Art

[0002] When the produced water is used for water injection in the oilfield water injection system, the produced water contains a large amount of reducing substances. If it is directly used to dissolve polymers without treatment, the reducing substances in the water will partially oxidize and degrade the polymers, reducing the viscosity of the injection fluid, increasing the polymer usage, and affecting the geological development effect. At present, most water injection systems use jet aeration oxygenation devices to oxygenate clear water and increase the dissolved oxygen in the water body. However, due to reasons such as difficult control of the air injection volume and less air injection volume of the jet aeration oxygenation device, the effect in daily use is not obvious.

[0003] The current aeration equipment is composed of multiple aeration heads connected in parallel or in series through pipelines and laid at the bottom of the water tank, and compressed air is introduced for aeration. The clogging of several aeration heads causes uneven aeration over the entire area. The air output of other aeration heads exceeds the standard, and the bubble quality deteriorates. In the case of clogging of one or several aeration heads, the equipment still operates and the operator cannot observe it. Even if observed, it can only be cleaned during major repairs of the equipment. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a micro-oxidation enhanced aeration device for a water injection system.

[0005] The technical solution of the utility model is: a micro-oxidation enhanced aeration device for a water injection system, which includes an air compressor. The outlet pipeline of the air compressor is connected to the inlet of a converter. The converter has n outlets, and each outlet is connected to an aeration head through a pipeline.

[0006] The converter includes a cylinder sleeve. A piston is arranged inside the cylinder sleeve. The left side of the cylinder sleeve is provided with an inlet. n air outlets are evenly distributed in a circle on the cylinder wall on the left side of the piston. A central sink is opened on the left side of the piston. A radial sink is opened on the outer circular surface of one side of the piston. The central sink and the radial sink are communicated. On the left side of the radial sink, a sealing ring is arranged on the piston.

[0007] A compression spring is arranged between the left side of the piston and the inner wall of the cylinder sleeve. The right side of the piston is fixedly connected to a sliding claw rod. The guiding column on the right side of the sliding claw rod is in clearance fit connection with the inner hole of a push rod. A indexing sleeve is sleeved outside the push rod. The indexing sleeve is threadedly connected to the cylinder sleeve. The right side of the indexing sleeve is fixedly connected to an electromagnetic coil. The inner hole of the electromagnetic coil is sleeved outside the push rod.

[0008] The sliding claw rod is provided with a sliding claw, and the number of the sliding claws is n. The push rod is provided with guide strips evenly distributed around the circumference and guide teeth staggered with the guide strips. The number of the guide strips and the guide teeth is 2n. The inner hole of the dividing sleeve is provided with dividing shallow grooves and dividing deep grooves arranged at intervals. A dividing claw is provided between the dividing shallow groove and the dividing deep groove. A guide groove is provided on the inner side of the dividing shallow groove. The dividing deep groove and the guide groove correspond to the guide strips of the push rod respectively. The number of the dividing shallow groove, the dividing deep groove and the guide groove are all n.

[0009] When the sliding claw is located at the shallow indexing groove position, the radial countersunk hole on the piston corresponds to one of the air outlets on the cylinder sleeve. When the sliding claw is located at the deep indexing groove position, the left end surface of the piston is located on the right side of the air outlet.

[0010] The aeration head includes a base, the lower part of the base is provided with a connecting thread and a center hole, the upper flange of the base is connected to the aeration cap by bolts and sealing rings, the outer circle of the aeration cap is provided with evenly distributed aeration holes, the inner side of the aeration cap is provided with a rotating basket, the rotating basket is a cage structure composed of upper and lower rings, side strips, a shaft, impeller blades and cutting strips, the upper and lower rings are fixedly connected with cutting strips evenly distributed on the circumference, the upper ring is connected to the shaft through the side strips, the lower ring is connected to the shaft through the impeller blades, and the rotating basket, the aeration cap and the base are connected by upper and lower bearings.

[0011] A plurality of spring pieces evenly distributed around the circumference are arranged on the shaft, and the outer sides of the spring pieces abut against the inner sides of the cutting strips.

[0012] The outer side surface of the cutting strip is provided with an inclined surface in the opposite direction of rotation, and the outer circle formed by the outer side lines of the cutting strip is matched and connected with the inner hole gap of the aeration cap.

[0013] A one-way valve is installed on the inlet pipeline of each aeration head, and a damper is connected to the outlet pipeline of the air compressor.

[0014] The utility model has the following beneficial effects: by arranging a converter, while aerating each aeration head of each group at the same time, all aeration heads can be purged with a large flow rate at a regular time, so that each aeration head can work normally, and at the same time, there is no need to stop the machine for cleaning, thus improving production efficiency and reducing labor costs. The aeration head with a cutting strip rotating at a high speed on the inner side of the aeration hole can cut and crush the outflowing airflow into tiny bubbles. The tiny bubbles can greatly increase the surface area of ​​the air in the sewage, fully contact with the sewage, oxidize the reducing impurities in the sewage, and thus improve the oxygen dissolution efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the process of the utility model;

[0016] Attached Figure 2 It is a structural schematic diagram of the converter in the utility model;

[0017] AttachedFigure 3 is a schematic structural view of the sliding claw rod in the present utility model;

[0018] Appendix Figure 4 is a schematic structural view of the push rod in the present utility model;

[0019] Appendix Figure 5 is a schematic structural view of the indexing sleeve in the present utility model;

[0020] Appendix Figure 6 is a schematic structural view of the aeration head in the present utility model;

[0021] Appendix Figure 7 is Appendix Figure 6 The A - A sectional view of

[0022] In the figure, 1 - air compressor, 2 - converter, 3 - aeration head, 4 - check valve, 5 - damper, 6 - cylinder liner, 7 - piston, 8 - sliding claw rod, 9 - indexing sleeve, 10 - push rod, 11 - electromagnetic coil, 12 - air inlet, 13 - air outlet, 14 - central counterbore, 15 - compression spring, 16 - radial counterbore, 17 - guide post, 18 - sliding claw, 19 - guide strip, 20 - guide tooth, 21 - indexing claw, 22 - indexing deep groove, 23 - indexing shallow groove, 24 - guide groove, 25 - cutting strip, 26 - base, 27 - aeration cap, 28 - rotating basket, 29 - impeller blade, 30 - aeration hole, 31 - shaft, 32 - side strip, 33 - spring piece, 34 - ring, 35 - connecting thread, 36 - inclined plane. Specific embodiments

[0023] The present utility model will be further described below with reference to the accompanying drawings:

[0024] As Figure 1 Combined with Figures 2 to 7 shown, a micro - oxidation enhanced aeration device for an oil - field water injection system includes an air compressor 1. The outlet pipeline of the air compressor 1 is connected to the air inlet 12 of the converter 2. The converter 2 has n air outlets 13, and each air outlet 13 is connected to an aeration head 3 through a pipeline;

[0025] The converter 2 includes a cylinder liner 6. A piston 7 is arranged inside the cylinder liner 6. An air inlet 12 is arranged on the left side of the cylinder liner 6. n circumferentially - evenly - distributed air outlets 13 are opened on the pipe wall of the cylinder liner 6 on the left side of the piston 7. A central counterbore 14 is opened on the left side of the piston 7. A radial counterbore 16 is opened on the outer circumferential surface of one side of the piston 7. The central counterbore 14 and the radial counterbore 16 are communicated. On the left side of the radial counterbore 16, a sealing ring is arranged on the piston 7;

[0026] A compression spring 15 is provided between the left side of the piston 7 and the inner wall of the cylinder sleeve 6. The right side of the piston 7 is fixedly connected to the sliding claw rod 8. The guide column 17 on the right side of the sliding claw rod 8 is connected with the inner hole clearance of the push rod 10. A dividing sleeve 9 is sleeved on the outer side of the push rod 10. The dividing sleeve 9 is threadedly connected to the cylinder sleeve 6. The right side of the dividing sleeve 9 is fixedly connected to the electromagnetic coil 11, and the inner hole of the electromagnetic coil 11 is sleeved on the outer side of the push rod 10.

[0027] The sliding claw rod 8 is provided with a sliding claw 18, and the number of the sliding claws 18 is n. The push rod 10 is provided with a guide strip 19 evenly distributed on the circumference and a guide tooth 20 staggered with the guide strip 19. The number of the guide strip 19 and the guide tooth 10 is 2n. The inner hole of the indexing sleeve 9 is provided with a shallow indexing groove 23 and a deep indexing groove 22 arranged at intervals. A indexing claw 21 is provided between the shallow indexing groove 23 and the deep indexing groove 22. A guide groove 24 is provided on the inner side of the shallow indexing groove 23. The indexing deep groove 22 and the guide claw 21 are provided between the shallow indexing groove 23 and the deep indexing groove 22. The grooves 24 correspond to the guide strips 19 of the push rod 10 respectively. The number of the shallow indexing grooves 23, the deep indexing grooves 22 and the guide grooves 24 are all n. The electromagnetic coil 11 repeatedly pushes the push rod 10, and the sliding claw rod 8 is repeatedly in the positions of the deep indexing grooves 22 and the shallow indexing grooves 23. At the same time, the piston 7 repeatedly moves left and right in the cylinder sleeve 6. Each time the sliding claw rod 8 and the piston 7 return to the position of the shallow indexing groove, they rotate an angle, and the rotation angle is equal to the angle between two adjacent air outlets 13.

[0028] When the sliding claw 18 is located at the position of the shallow indexing groove 23, the radial countersunk hole 16 on the piston 7 corresponds to one of the air outlets 13 on the cylinder sleeve 6; when the sliding claw 18 is located at the position of the deep indexing groove 22, the left end surface of the piston 7 is located on the right side of the air outlet 13.

[0029] During normal aeration, when the sliding claw 18 is located at the position of the indexing deep groove 22, the left end face of the piston 7 is located on the right side of the air outlet 13, all the air outlets 13 are connected to the air inlet 12, and all the aeration heads 3 participate in aeration. During the set time period, the electromagnetic coil 11 is energized once, and the guide bar 19 of the push rod 10 moves to the left along the guide groove 24 and the indexing deep groove 22. When the guide tooth 20 passes over the indexing claw 21, the sliding claw 18 slides to the indexing shallow groove 23, pushing the radial countersunk hole 1 on the piston 7. 6 corresponds to one of the air outlets 13 on the cylinder sleeve 6. At this time, the air inlet 12 is connected to one of the air outlets 13, and the air flow only purges one aeration head 3. The air flow with n times the flow rate blows out the impurities in the aeration head 3 for a period of time. The electromagnetic coil 11 acts twice again, the piston 7 rotates, and the radial countersunk hole 16 on the piston 7 rotates to the next air outlet 13 to purge the next aeration head 3. After one cycle, the purge work of all the aeration heads 3 is completed, and normal aeration work begins.

[0030] By setting up the converter 2, while simultaneously aerating each aeration head 3 in each group, it is possible to periodically conduct large-flow purging on all the aeration heads 3 separately, achieving the purpose that each aeration head 3 can work properly. At the same time, it eliminates the need for shutdown cleaning, improves production efficiency, and reduces labor costs.

[0031] The aeration head 3 includes a base 26. The lower part of the base 26 is provided with a connecting thread 35 and a central hole. The upper flange of the base 26 is connected to the aeration cap 27 through bolts and sealing rings. The outer circumference of the aeration cap 27 is provided with evenly distributed aeration holes 30. Inside the aeration cap 27, there is a rotating basket 28, which is a cage-like structure composed of two upper and lower rings 34, side strips 32, a shaft 31, impeller blades 29, and cutting strips 25. The cutting strips 25 are fixedly connected in a circumferentially uniform manner between the two upper and lower rings 34. The upper ring 34 is connected to the shaft 31 through the side strips 32, and the lower ring 34 is connected to the shaft 31 through the impeller blades 29. The rotating basket 28 is connected to the aeration cap 27 and the base 26 through two upper and lower bearings.

[0032] A number of circumferentially evenly distributed elastic pieces 33 are provided on the shaft 31. The outer sides of the elastic pieces 33 abut against the inner sides of the cutting strips 25, which can provide elastic support for the cutting strips 25 and improve the cutting effect.

[0033] The outer side surface of the cutting strip 25 is provided with inclined surfaces 36 in the opposite direction of rotation, so that the outer side of the cutting strip 25 forms an acute-angled edge line, improving the cutting effect. The outer circle formed by the outer side edges of the cutting strips 25 is in clearance fit connection with the inner hole of the aeration cap 27. During aeration, compressed gas enters the aeration head 3 and flows upward from the bottom, driving the impeller blades 29 to rotate, thereby driving the rotating basket 28 to rotate. The cutting strips 25 rotate at high speed inside the aeration holes 30, cutting and crushing the outflowing air into tiny bubbles. The tiny bubbles can greatly increase the surface area of air in the sewage, fully contact with the sewage, and oxidize the reducing impurities in the sewage, thereby improving the oxygen dissolution efficiency.

[0034] A one-way valve 4 is installed on the inlet pipeline of each aeration head 3 to prevent sewage from the outside from entering the equipment when aeration stops. A damper 5 is connected in parallel on the outlet pipeline of the air compressor 1 to buffer the air pressure change during the conversion of the converter 2.

Claims

1. A micro-oxidation enhanced aeration device for a water injection system, comprising an air compressor (1), characterized in that: The outlet pipeline of the air compressor (1) is connected to the air inlet (12) of the converter (2), the converter (2) has n air outlets (13), and each air outlet (13) is connected to an aeration head (3) through a pipeline; The converter (2) comprises a cylinder sleeve (6), a piston (7) is arranged in the cylinder sleeve (6), an air inlet (12) is arranged on the left side of the cylinder sleeve (6), n air outlets (13) are evenly distributed on the circumference of the cylinder sleeve (6) on the left side of the piston (7), a central countersunk hole (14) is arranged on the left side of the piston (7), a radial countersunk hole (16) is arranged on the outer circumferential surface of one side of the piston (7), the central countersunk hole (14) and the radial countersunk hole (16) are connected, and a sealing ring is arranged on the piston (7) on the left side of the radial countersunk hole (16); A compression spring (15) is provided between the left side of the piston (7) and the inner wall of the cylinder sleeve (6); the right side of the piston (7) is fixedly connected to a sliding claw rod (8); a guide column (17) on the right side of the sliding claw rod (8) is connected to the inner hole of a push rod (10) by clearance fit; a dividing sleeve (9) is sleeved on the outer side of the push rod (10); the dividing sleeve (9) is threadedly connected to the cylinder sleeve (6); the right side of the dividing sleeve (9) is fixedly connected to an electromagnetic coil (11); and the inner hole of the electromagnetic coil (11) is sleeved on the outer side of the push rod (10).

2. A water injection system micro-oxidation enhanced aeration device according to claim 1, characterized in that: The sliding claw rod (8) is provided with a sliding claw (18), the number of the sliding claws (18) is n, the push rod (10) is provided with a guide strip (19) evenly distributed around the circumference and a guide tooth (20) staggered with the guide strip (19), the number of the guide strip (19) and the guide tooth (20) is 2n, the inner hole of the indexing sleeve (9) is provided with a shallow indexing groove (23) and a deep indexing groove (22) arranged at intervals, a indexing claw (21) is provided between the shallow indexing groove (23) and the deep indexing groove (22), a guide groove (24) is provided on the inner side of the shallow indexing groove (23), the deep indexing groove (22) and the guide groove (24) respectively correspond to the guide strip (19) of the push rod (10), and the number of the shallow indexing groove (23), the deep indexing groove (22) and the guide groove (24) are all n.

3. A water injection system micro-oxidation enhanced aeration device according to claim 1 or 2, characterized in that: When the sliding claw (18) is located at the position of the shallow indexing groove (23), the radial counterbore (16) on the piston (7) corresponds to one of the air outlets (13) on the cylinder sleeve (6); when the sliding claw (18) is located at the position of the deep indexing groove (22), the left end surface of the piston (7) is located on the right side of the air outlet (13).

4. A water injection system micro-oxidation enhanced aeration device according to claim 1, characterized in that: The aeration head (3) comprises a base (26), the lower part of which is provided with a connecting thread (35) and a center hole, the upper flange of the base (26) is connected to the aeration cap (27) through bolts and a sealing ring, the outer circumference of the aeration cap (27) is provided with evenly distributed aeration holes (30), the inner side of the aeration cap (27) is provided with a rotating basket (28), the rotating basket (28) is a cage-like structure composed of two upper and lower circular rings (34), a side strip (32), a shaft (31), an impeller blade (29) and a cutting strip (25), the upper and lower circular rings (34) are fixedly connected to each other with evenly distributed cutting strips (25), the upper circular ring (34) is connected to the shaft (31) through the side strip (32), the lower circular ring (34) is connected to the shaft (31) through the impeller blade (29), and the rotating basket (28) and the aeration cap (27) and the base (26) are connected through two upper and lower bearings.

5. A water injection system micro-oxidation enhanced aeration device according to claim 4, characterized in that: A plurality of spring pieces (33) evenly distributed around the circumference are arranged on the shaft (31), and the outer sides of the spring pieces (33) abut against the inner sides of the cutting strips (25).

6. A water injection system micro-oxidation enhanced aeration device according to claim 4, characterized in that: The outer side surface of the cutting strip (25) is provided with an inclined surface (36) in the opposite direction of rotation, and the outer circle formed by the outer edge line of the cutting strip (25) is connected with the inner hole of the aeration cap (27) in a gap-matched manner.

7. The micro-oxidation enhanced aeration device for a water injection system according to claim 1, characterized in that: A one-way valve (4) is installed on the inlet pipeline of each aeration head (3), and a damper (5) is connected to the outlet pipeline of the air compressor (1).

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