Chemical agent mixing device

Abstract

The present application relates to the technical fields of chemical agent mixing, and specifically relates to a chemical agent mixing device. The chemical agent mixing device comprises a negative pressure feeder, which has a first liquid inlet and a first liquid outlet; and a turbine mixer, which comprises a turbine shell having a second liquid inlet and a second liquid outlet, the second liquid inlet being connected with the first liquid outlet; the turbine shell is provided with a support shaft and a support frame, at least two turbines are arranged on the support shaft in an axial direction, and the support shaft is rotatably assembled on the support frame and / or the turbine is rotatably assembled on the support shaft. In the present application, the turbine is driven to rotate by liquid force, so that the turbine can fully stir the chemical agent, the chemical agent is uniformly mixed, the material deposition is avoided, the liquid mixing quality is improved, and the subsequent pipeline blockage is avoided. In the process, no driving motor is needed, the cost is reduced, and the on-line injection without stopping the well can be realized, so that the loss caused by the production stoppage is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical agent mixing, in particular to a chemical agent mixing device. BACKGROUND

[0002] With most of the oil fields in the country entering the high water cut and high recovery degree development stage, the oil field's profile control, regulation, and water plugging are the main measures adopted by the oil field. Due to the heterogeneity of the oil layer, water "breakthrough" and "channeling" in the oil layer will occur, which seriously affects the development effect of the oil field. In the prior art, the problem of water channeling in the oil well is usually solved by injecting a water plugging and channeling blocking agent into the formation.

[0003] A pry-mounted liquid preparation system is disclosed in Chinese Utility Model Patent No. CN210434404U, which includes a liquid tank, a negative pressure feeding device, and a mixing tank. The liquid material is pressurized by a liquid pump and then enters the negative pressure feeding device, where it flows to form a jet stream. Under the action of the jet stream, negative pressure is generated to suck the powder at the discharge port of the powder hopper into the negative pressure feeding device, thereby achieving the premixing of the powder and the liquid material. The premixed material enters the mixing tank through a pipeline for thorough stirring to ensure the uniformity of the material.

[0004] In the above-mentioned patent, the material is stirred by driving the mixing tank to rotate with a driving motor, which increases the operating cost. Moreover, the mixing tank has a large volume, resulting in a large floor area of the system on site, which is not conducive to on-site operation. SUMMARY

[0005] The present application aims to provide a chemical agent mixing device to solve the problem of increased operating cost caused by the need for a driving motor to drive the mixing tank to rotate for stirring the material in the prior art liquid preparation system.

[0006] To achieve the above-mentioned purpose, the technical scheme of the chemical agent mixing device of the present application is as follows:

[0007] The chemical agent mixing device comprises a negative pressure feeder having a first liquid inlet and a first liquid outlet, and a turbine mixer comprising a turbine shell having a second liquid inlet and a second liquid outlet, the second liquid inlet being connected to the first liquid outlet. A support shaft and a support frame are provided in the turbine shell, and at least two turbines are arranged on the support shaft in the axial direction. The support shaft is rotatably assembled on the support frame and / or the turbines are rotatably assembled on the support shaft.

[0008] The beneficial effects are that: in the application, the turbine is driven by hydraulic force to fully stir the chemical agent, so that the chemical agent is uniformly mixed, the material deposition is avoided, the liquid mixing quality is improved, and the subsequent pipeline blockage is avoided. In the process, a driving motor is not needed, the cost is reduced, and the on-line injection without stopping the well is realized, so that the loss caused by stopping production is avoided.

[0009] As a further improvement, the turbine shell comprises a cylindrical turbine shell body and turbine end covers arranged at both ends of the turbine shell body, the support frame comprises two sub-frames fixed to the inner sides of the two turbine end covers, and the two ends of the support shaft are fixed to the corresponding sub-frames, and the turbine is rotatably arranged on the support shaft.

[0010] As a further improvement, the two ends of the support shaft are fixed to the corresponding sub-frames through the pressure caps, and the pressure caps are in a hemispherical structure.

[0011] The beneficial effects are that: in this way, the chemical agent entering the turbine shell from the second liquid inlet joint can be dispersed to the surrounding.

[0012] As a further improvement, the hemispherical surface of the pressure cap is provided with a texture.

[0013] The beneficial effects are that: in this way, the chemical agent can be preliminarily rotated, which is conducive to driving the turbine to rotate.

[0014] As a further improvement, the chemical agent mixing device further comprises a cyclone distributor, and the cyclone distributor comprises a cyclone shell having a third liquid inlet and a third liquid outlet, and the third liquid inlet is connected with the second liquid outlet; a cyclone cylinder is arranged in the cyclone shell, the cylinder wall of the cyclone cylinder is provided with cyclone holes arranged at intervals in the circumferential direction, one end of the cyclone cylinder close to the third liquid inlet is an open end, one end of the cyclone cylinder close to the third liquid outlet is a closed end, the open end of the cyclone cylinder is fixed to the cyclone shell, and the closed end of the cyclone cylinder is a cantilevered end.

[0015] The beneficial effects are that: by increasing the cyclone distributor, the cyclone mixing of the chemical agent is realized, and the mixing uniformity of the chemical agent is further improved.

[0016] As a further improvement, the closed end of the cyclone cylinder is provided with a centralizing piece.

[0017] The beneficial effects are that: in this way, the cyclone cylinder is always kept in the central position.

[0018] As a further improvement, the centralizing piece is a centralizing rod extending in the radial direction of the cyclone cylinder, and at least two centralizing rods are arranged at intervals in the circumferential direction of the cyclone cylinder.

[0019] The beneficial effects are that: the structure of the centralizing rod is relatively simple, easy to arrange, and can increase the flow rate.

[0020] As a further improvement, the cyclone hole is a straight inclined hole.

[0021] The beneficial effect is that the design is conducive to the processing of the cyclone hole.

[0022] As a further improvement, the negative pressure feeder comprises a liquid suction pipe, and at least two feeding ports are arranged on the liquid suction pipe in an axial direction.

[0023] The beneficial effect is that the design can be fed through a single feeding port or simultaneously fed through at least two feeding ports, improving versatility.

[0024] As a further improvement, the first liquid outlet is a horn-shaped port.

[0025] The beneficial effect is that the design allows the chemical agent to be sprayed into the cyclone shell, which is conducive to the mixing of the chemical agent. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure of the chemical agent mixing device of the present application is shown in the figure;

[0027] Figure 2 The structure of the negative pressure feeder in Figure 1 is shown in the figure;

[0028] Figure 3 The structure of the turbine mixer in Figure 1 is shown in the figure;

[0029] Figure 4 The structure of the turbine mixer in Figure 1 is shown in the figure, with the turbine shell body removed;

[0030] Figure 5 The structure of the cyclone mixer in Figure 1 is shown in the figure;

[0031] Figure 6 The A-A cross-sectional view of Figure 5 is shown in the figure;

[0032] Figure 7 The structure of the cyclone mixer in Figure 1 is shown in the figure, with the cyclone shell body removed.

[0033] In the diagram: 10. Negative pressure feeder; 11. First liquid inlet connector; 12. Spray nozzle; 13. Nozzle cover; 14. Connector; 15. Suction pipe; 16. First liquid outlet connector; 17. Feed pipe; 18. Funnel; 20. Turbine mixer; 21. Turbine housing body; 22. Turbine end cover; 23. Second liquid inlet connector; 24. Second liquid outlet connector; 25. Support shaft; 26. Turbine; 27. Frame body; 28. Pressure cap; 29. ​​Annular groove; 30. Swirl distributor; 31. Swirl housing body; 32. Swirl cylinder; 33. Swirl hole; 34. Straightening rod; 35. Third liquid inlet connector; 36. Third liquid outlet connector; 37. Swirl end cover. Detailed Implementation

[0034] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0035] Example 1 of the chemical reagent mixing device of the present invention:

[0036] like Figure 1 As shown, the chemical reagent mixing device includes a negative pressure feeder 10, a turbine mixer 20, and a cyclone mixer 30 connected in sequence.

[0037] like Figure 2 As shown, the negative pressure feeder 10 includes a suction pipe 15. The left end of the suction pipe 15 is connected to a first inlet connector 11 via a connector 14 and a nozzle cover 13, and the right end of the suction pipe 15 is connected to a first outlet connector 16. The spray nozzle 12 is located inside the nozzle cover 13 and connected to the first inlet connector 11, and it can spray a jet to create a negative pressure in the suction pipe 15. The first inlet connector 11 has a first inlet, and the first outlet connector 16 has a first outlet, and the first outlet is a funnel-shaped opening, which allows the chemical agent to be sprayed outward.

[0038] In this embodiment, two feed pipes 17 are arranged axially at intervals along the liquid suction pipe 15. Each feed pipe 17 has a feed inlet, and its upper end is connected to the funnel 18 to allow solid medicine to be added from the feed pipe 17. In other embodiments, the upper end of the feed pipe can be connected to a pipeline to allow liquid medicine to be added from the feed pipe.

[0039] In this embodiment, each feed pipe 17 is equipped with a control valve. This design allows for feeding through a single feed pipe 17 or feeding through two feed pipes 17 simultaneously.

[0040] The main function of the negative pressure feeder 10 is to use negative pressure to feed the material and simultaneously achieve the initial mixing of chemical agents.

[0041] like Figure 3 and Figure 4As shown, the turbine mixer 20 comprises a turbine shell, which comprises a turbine shell body 21 and turbine end covers 22 arranged at both ends of the turbine shell body 21, and a second liquid inlet connector 23 and a second liquid outlet connector 24 are arranged on the two turbine end covers 22 respectively, the second liquid inlet connector 23 has a second liquid inlet, and the second liquid outlet connector 24 has a second liquid outlet. The second liquid inlet connector 23 is connected to the first liquid outlet connector 16 to realize the connection between the second liquid inlet and the first liquid outlet.

[0042] In this embodiment, the turbine shell is provided with a support shaft 25, a sub-frame body 27 and a turbine 26. Specifically, the sub-frame body 27 comprises a ring body, two connecting rods arranged in the ring body and arranged in a cross shape, and four support rods arranged on the side surface of the ring body. The inner side surface of the turbine end cover 22 is provided with a ring groove 29, and the overhanging ends of the four support rods are located in the ring groove 29. The two ends of the support shaft 25 are fixed at the cross intersection positions of the two connecting rods of the corresponding sub-frame body 27, and the turbine 26 is arranged in four and spaced along the axial direction of the support shaft 25. The turbine 26 is rotatably assembled on the support shaft 25 and cannot move in the axial direction of the support shaft 25. The two turbine end covers 22 are threadedly connected in the turbine shell body 21 to fix the sub-frame body 27 and the support shaft 25 in the turbine shell when the two turbine end covers 22 are screwed. The two sub-frame bodies 27 together form a support frame.

[0043] In this embodiment, the two ends of the support shaft 25 are fixed on the corresponding sub-frame body 27 by screwing the pressure cap 28, and the pressure cap 28 is in a hemispherical structure. This design is beneficial to the dispersion of the material entering the turbine shell from the second liquid inlet connector 23. The pressure cap 28 is provided with a thread, which enables the chemical agent to rotate initially and facilitates the rotation of the turbine 26.

[0044] The turbine 26 is driven to rotate by liquid force, and the stirring of the chemical agent is realized by the turbine 26 to realize the first full mixing of the chemical agent. Since the turbine does not need to be driven by a motor, the cost is reduced.

[0045] As shown in the figure, Figures 5 to 7 The cyclone distributor 30 comprises a cyclone shell, which comprises a cyclone shell body 31 and cyclone end covers 37 arranged at both ends of the cyclone shell body 31, and a third liquid inlet connector 35 and a third liquid outlet connector 36 are arranged on the two cyclone end covers 37 respectively, the third liquid inlet connector 35 has a third liquid inlet, and the third liquid outlet connector 36 has a third liquid outlet. The third liquid inlet connector 35 is connected to the second liquid outlet connector 24 to realize the connection between the third liquid inlet and the second liquid outlet.

[0046] In the embodiment, the cyclone shell is provided with a cyclone cylinder 32, the cylinder wall of the cyclone cylinder 32 is provided with cyclone holes 33 arranged at intervals in the circumferential direction, one end of the cyclone cylinder 32 close to the third liquid inlet joint 35 is an open end, one end of the cyclone cylinder 32 close to the third liquid outlet joint is a closed end, the open end of the cyclone cylinder 32 is fixed on the cyclone end cover 37, and the closed end of the cyclone cylinder 32 is a cantilever end. The third liquid inlet joint 35 is fixed in the open end of the cyclone cylinder 32, so as to be fixed on the cyclone end cover 37 through the cyclone cylinder 32.

[0047] In the embodiment, the closed end of the cyclone cylinder 32 is provided with a centralizing piece to ensure that the cyclone cylinder 32 always remains in the central position. Preferably, as shown in the figure, the centralizing piece is a centralizing rod 34 extending in the radial direction of the cyclone cylinder 32, and four centralizing rods 34 are arranged at intervals in the circumferential direction of the cyclone cylinder 32. Figure 6

[0048] The rotating flow of the chemical agent can realize the second mixing to ensure the uniformity of the mixing of the chemical agent.

[0049] In the embodiment, the negative pressure feeder 10 can be used alone, and can be used in combination with the turbine mixer 20 and / or the cyclone mixer 30.

[0050] In use, the solid agent is placed in the hopper 18, the jet nozzle 12 performs jet flow to form negative pressure, so that the solid agent in the hopper 18 is sucked into the liquid suction pipeline 15 to perform the first mixing of the chemical agent. Then the pre-mixed chemical agent enters the turbine shell, the hydraulic turbine 26 rotates, and the turbine 26 performs the second mixing of the chemical agent; the chemical agent enters the cyclone shell and realizes the third mixing under the action of the cyclone cylinder. Finally, the chemical agent is uniformly mixed to achieve the expected effect.

[0051] The chemical agent mixing device can uniformly mix the chemical agent, avoid material deposition, improve the quality of liquid mixing, and avoid subsequent pipeline blockage. The device can realize online injection without stopping the well, avoids the loss caused by stopping production, has a simple structure, is easy to operate, has a fast injection speed and low cost, and is suitable for small-scale profile control, profile adjustment and water plugging operations. The device can also be continuously operated for a long time to meet the use requirements of large-dose profile adjustment and profile control.

[0052] Embodiment 2 of the chemical agent mixing device of the application:

[0053] The difference between the embodiment and the embodiment 1 is that in the embodiment 1, the two ends of the support shaft are fixed on the corresponding sub-frame bodies, and the turbine is rotatably assembled on the support shaft. In the embodiment, the two ends of the support shaft are rotatably assembled on the corresponding sub-frame bodies, and the turbine is rotatably assembled on the support shaft. In other embodiments, the two ends of the support shaft are rotatably assembled on the corresponding sub-frame bodies, and the turbine is fixed on the support shaft.​

[0054] Embodiment 3 of the chemical agent mixing device of the present application:

[0055] The difference between this embodiment and embodiment 1 is that the pressing cap in embodiment 1 is a hemispherical structure. In this embodiment, the pressing cap is a conical structure.

[0056] Embodiment 4 of the chemical agent mixing device of the present application:

[0057] The difference between this embodiment and embodiment 1 is that the hemispherical surface of the pressing cap in embodiment 1 is provided with a texture. In this embodiment, the hemispherical surface of the pressing cap is a smooth surface.

[0058] Embodiment 5 of the chemical agent mixing device of the present application:

[0059] The difference between this embodiment and embodiment 1 is that the righting member in embodiment 1 is a righting rod. In this embodiment, the righting member is a righting disc, and the righting disc is provided with a hollow.

[0060] Embodiment 6 of the chemical agent mixing device of the present application:

[0061] The difference between this embodiment and embodiment 1 is that the cyclone hole in embodiment 1 is a straight inclined hole. In this embodiment, the cyclone hole is an arc-shaped inclined hole.

[0062] The above is only the preferred embodiment of the present application, and does not limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by applying the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A chemical reagent mixing device, comprising a negative pressure feeder, the negative pressure feeder having a first liquid inlet and a first liquid outlet; characterized in that, It also includes a turbine mixer, which comprises a turbine housing having a second inlet and a second outlet, the second inlet being connected to a first outlet; the turbine housing contains a support shaft and a support frame, with at least two turbines spaced axially along the support shaft, the support shaft being rotatably mounted on the support frame and / or the turbines being rotatably mounted on the support shaft; a negative pressure feeder, a turbine mixer, and a cyclone distributor are sequentially connected together; the negative pressure feeder includes a suction pipe, the left end of which is connected to a first inlet connector via a connector and a nozzle cap, and the right end of the suction pipe is connected to... It has a first liquid outlet connector; the spray nozzle is located inside the nozzle cover and connected to the first liquid inlet connector, which can spray a jet to form a negative pressure in the liquid suction pipe; the vortex distributor includes a vortex shell, the vortex shell has a third liquid inlet and a third liquid outlet, the third liquid inlet is connected to the second liquid outlet; a vortex cylinder is provided inside the vortex shell, the cylinder wall of the vortex cylinder is provided with vortex holes arranged at intervals along its circumference, the end of the vortex cylinder near the third liquid inlet is the open end, the end of the vortex cylinder near the third liquid outlet is the closed end, the open end of the vortex cylinder is fixed to the vortex shell, and the closed end of the vortex cylinder is the cantilever end.

2. The chemical reagent mixing apparatus according to claim 1, characterized in that, The turbine housing includes a cylindrical turbine housing body and turbine end caps disposed at both ends of the turbine housing body. The support frame includes two sub-frames, which are respectively fixed to the inner sides of the two turbine end caps. The two ends of the support shaft are respectively fixed to the corresponding sub-frames, and the turbine is rotatably mounted on the support shaft.

3. The chemical reagent mixing apparatus according to claim 2, characterized in that, The two ends of the support shaft are fixed to the corresponding sub-frames by pressure caps, which are hemispherical in shape.

4. The chemical reagent mixing apparatus according to claim 3, characterized in that, The pressure cap has textured surfaces on its hemispherical surface.

5. The chemical reagent mixing apparatus according to claim 1, characterized in that, The closed end of the cyclone tube is provided with a straightening element.

6. The chemical reagent mixing apparatus according to claim 5, characterized in that, The straightening element is a straightening rod extending radially along the vortex tube, and at least two straightening rods are arranged at intervals along the circumference of the vortex tube.

7. The chemical reagent mixing apparatus according to claim 1, characterized in that, The vortex orifice is a straight oblique orifice.

8. The chemical reagent mixing apparatus according to any one of claims 1 to 4, characterized in that, The negative pressure feeder includes a liquid suction pipe with at least two feed ports spaced apart along its axial direction.

9. The chemical reagent mixing apparatus according to any one of claims 1 to 4, characterized in that, The first liquid outlet is a funnel-shaped opening.

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