Hybrid agitator for oil cementing

Abstract

The application provides a mixed stirrer for oil well cementing, and relates to the technical field of oil well cement mixing and stirring. When the discharge flow is small, the conical head is subjected to small discharge force, and the discharge passage width is large, so that the opening is increased to reduce the influence on the flow. When the flow is large, the conical head is subjected to increased discharge force, and the discharge passage width is small, so that the opening is reduced to increase the outlet flow velocity of the ash, so that the cyclone effect is increased to increase the mixing and stirring effect, the flow velocity and flow of the discharged ash in the stirring process can be automatically adjusted according to the stirring capacity, and the technical problem that the mixing and stirring system of the oil field cementing material in the prior art has a single mixing and stirring mode and cannot automatically adjust and stir the mud under different flows, thereby affecting the uniformity of the mud is solved.

Description

Technical Field

[0001] This invention relates to the field of oil well cement mixing technology, and in particular to a mixing mixer for oil well cementing. Background Technology

[0002] The process of oil extraction is complex. First, a well is drilled on the surface to a depth of hundreds to thousands of meters. Then, a steel casing is inserted into the wellbore. To ensure a tight bond between the casing and the formation, the industry has traditionally used oil well cement as a cementing material for well cementing, which supports the casing and seals the formation. Subsequently, perforations are made at different depths in oil-bearing geological strata to extract the oil.

[0003] Due to varying geological conditions, downhole pressure, temperature, acidity / alkalinity of underground rock formations, and groundwater physicochemical parameters differ significantly, making it challenging to ensure high-quality cementing. Furthermore, the oil well cement used is a complex chemical product with a sophisticated formulation and preparation process, requiring a complete and mature mixing and blending system.

[0004] However, the existing oilfield cementing material mixing and stirring systems have a relatively simple mixing method and cannot achieve automatic adjustment and stirring of mud at different flow rates, which affects the uniformity of the mud. Summary of the Invention

[0005] The purpose of this invention is to provide a mixing agitator for oil well cementing, which alleviates the technical problem that existing oilfield cementing material mixing and stirring systems have a relatively simple mixing method and cannot achieve automatic adjustment and stirring of mud at different flow rates, thus affecting the uniformity of the mud.

[0006] In a first aspect, the present invention provides a mixing agitator for oil cementing, comprising: a mixing tank, a ash delivery box, and a flow regulating component;

[0007] The mixing tank is equipped with a mixing chamber inside.

[0008] The bottom of the ash feeding box extends through the top of the mixing tank into the mixing chamber, and the bottom of the ash feeding box is provided with a funnel-shaped ash outlet. The end of the ash outlet is connected to multiple angled ash outlet spiral pipes, and the side wall of the ash outlet is connected to multiple vertically arranged ash outlet direct spray pipes.

[0009] The ash discharge spiral pipe and the ash discharge direct injection pipe are both connected to the flow regulating component at their ash discharge ends. The flow regulating component is provided with a conical head for adjusting the width of the ash discharge channel according to the ash discharge flow rate.

[0010] In an optional implementation,

[0011] The flow regulating component also includes a nozzle housing and a flow regulating spring;

[0012] The nozzle housing has a flow regulating cavity, the conical head is disposed in the flow regulating cavity, and the distance between the conical head and the inner wall of the nozzle housing forms the ash discharge channel;

[0013] One end of the flow regulating spring is connected to the conical head, and the other end of the flow regulating spring is connected to the top inner wall of the nozzle housing. The flow regulating spring is used to give the conical head a tendency to move toward the ash discharge end.

[0014] In an optional implementation,

[0015] The oil cementing mixing agitator also includes a striking component, which is disposed inside the ash outlet, and a central ash outlet hole is provided in the middle of the ash outlet.

[0016] The striking component includes a connecting rod, a guide seat, a vibrating hammer, a guide rod, a blade body, an eccentric turntable, and a blade holder;

[0017] One end of the connecting rod is connected to the outer wall of the ash outlet, and the other end of the connecting rod is connected to the guide seat. The guide seat provides a sliding path, the vibrating hammer is slidably connected to the guide seat, and the vibrating hammer moves along the sliding path.

[0018] The blade body is located below the central ash outlet. The bottom of the blade body is connected to the eccentric turntable. The bottom of the eccentric turntable has a connecting plate. One end of the guide rod is hinged to the connecting plate, and the other end of the guide rod is hinged to the vibrating hammer. The blade body is configured to rotate under the action of the gas ejected from the central ash outlet, and drive the eccentric turntable to rotate, so as to drive the vibrating hammer to move along the sliding path through the guide rod and strike the outer wall of the ash outlet.

[0019] Multiple blade holders are provided. One end of the blade holder is connected to the outer wall of the ash outlet, and the other end of the blade holder has a limiting groove that can abut against the blade body. The multiple limiting grooves surround a limiting area for restricting the movement of the blade body.

[0020] In an optional implementation,

[0021] The oil cementing mixing agitator also includes a main water inlet tank, an atomizing component, an ash inlet flange, and an air inlet flange;

[0022] The atomizing component is disposed at the top inside the ash feeding box, and the main water inlet box is connected to the atomizing component through an atomizing water inlet pipe. The atomizing component is used to form atomization inside the ash feeding box.

[0023] The ash feeding box is connected to the ash inlet flange, and the ash inlet flange is connected to the air outlet flange, so that the air and ash are premixed in the ash inlet flange before entering the ash feeding box.

[0024] In an optional implementation,

[0025] The oil cementing mixing agitator also includes a main water inlet pipe, a side water inlet pipe, and multiple atomizing branch pipes;

[0026] One end of the main water inlet pipe is connected to the main water inlet tank, and the other end of the main water inlet pipe is connected to the mixing tank along the tangential direction of the mixing tank body;

[0027] One end of the side water inlet pipe is connected to the main water inlet tank, and the other end of the side water inlet pipe is connected to a plurality of atomizing branch pipes spaced apart in the vertical direction. One end of the atomizing branch pipe extends into the mixing tank and is connected to the rotating nozzle, and the rotating nozzle is configured to be movable relative to the atomizing branch pipe.

[0028] In an optional implementation,

[0029] The oil cementing mixing agitator also includes a universal adjustment seat, a corrugated gear, a gear motor, a support rod, a universal ball joint, and a support compression spring;

[0030] The universal adjustment seat is provided with multiple through holes for fitting the rotating nozzle.

[0031] The corrugated gear is disposed above the mixing tank, and a corrugated tooth ring is disposed at the bottom of the corrugated gear. One end of the support rod is connected to the corrugated tooth ring through the universal ball joint, and the other end of the support rod passes through the mixing tank and is connected to the universal adjustment seat.

[0032] The outer wall of the support rod extends outward and is provided with an abutting protrusion. One end of the support spring is connected to the abutting protrusion, and the other end of the support spring is connected to the top of the mixing tank. The support spring is used to make the support rod have a tendency to move toward the corrugated tooth ring so that the support rod is in close contact with the corrugated tooth ring.

[0033] The gear motor is connected to the corrugated gear, and the gear motor is configured to drive the corrugated gear to rotate, so as to drive the universal adjustment seat to move up and down through the corrugated gear ring, and drive the rotating nozzle to rotate up and down.

[0034] In an optional implementation,

[0035] The oil cementing mixing agitator also includes a transverse guide rod, a transverse connecting rod, and a lateral motor;

[0036] The transverse guide rod is connected to the side of the universal adjustment seat, the end of the transverse connecting rod is hinged to the transverse guide rod, the lateral motor is mounted on the outer surface of the mixing tank, the drive shaft of the lateral motor extends into the mixing tank and is connected to the transverse connecting rod, and the lateral motor is configured to drive the transverse connecting rod to rotate in the horizontal direction, so as to drive the rotating nozzle to swing left and right through the universal adjustment seat.

[0037] In an optional implementation,

[0038] The oil cementing mixing agitator also includes a movable plate, a mixing motor, an electric push rod, a movable base, a fixed base, and mixing components;

[0039] The end of the electric push rod is connected to the movable plate, the stirring motor is mounted on the movable plate, the drive shaft of the stirring motor extends into the stirring tank, the fixed seat is fixed on the bottom wall of the stirring tank, the movable seat is located above the fixed seat, the upper and lower ends of the stirring component are respectively connected to the fixed seat and the movable seat, and both the fixed seat and the movable seat are connected to the drive shaft of the stirring motor, so that the fixed seat, the movable seat and the stirring component rotate together with the drive shaft of the stirring motor.

[0040] In an optional implementation,

[0041] The stirring component includes an upper connecting rod blade, a main stirring blade, a lower connecting rod blade, and a vertical guide.

[0042] One end of the upper connecting rod blade is hinged to the movable seat, and the other end of the upper connecting rod blade is hinged to the main stirring blade. One end of the lower connecting rod blade is hinged to the fixed seat, and the other end of the lower connecting rod blade is hinged to the main stirring blade. The vertical guide is sleeved on the drive shaft of the stirring component, and the vertical guide is connected to the main stirring blade.

[0043] The electric push rod is configured to drive the stirring motor to rise and fall via the movable plate, and adjust the distance between the movable seat and the fixed seat to adjust the rotation radius of the main stirring blade.

[0044] In an optional implementation,

[0045] The oil cementing mixing agitator also includes a swing rod, a support base, a swing hammer, and a swing compression spring;

[0046] One end of the swing rod is hinged to the moving plate, the other end of the swing rod is connected to the swing spring, and the other end of the swing spring is connected to the swing hammer head;

[0047] The support base is fixed to the outer surface of the mixing tank, and the support base is hinged to the swing rod;

[0048] When the moving plate moves downward, the swing rod moves around the support base toward the direction of the mixing tank, and the swing hammer strikes the mixing tank.

[0049] The mixing agitator for oil cementing provided by this invention, when the ash discharge flow rate is small, the conical head experiences less ash discharge impact force, and the ash discharge channel width is larger, resulting in an increased opening to reduce the impact on the flow rate. When the flow rate is large, to increase the swirling degree at the ash discharge point and achieve a uniform mixing effect, the conical head experiences increased ash discharge impact force, and the ash discharge channel width is smaller, resulting in a smaller opening and increased ash outlet flow velocity, thus increasing the swirling effect and enhancing the mixing effect. This allows the ash discharge velocity and flow rate to be automatically adjusted according to the mixing capacity during the mixing process, alleviating the technical problem of existing oilfield cementing material mixing and stirring systems having a relatively simple mixing method and being unable to achieve automatic adjustment and mixing of mud at different flow rates, thus affecting the uniformity of the mud. Attached Figure Description

[0050] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0051] Figure 1 This is a cross-sectional view of the overall structure of a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0052] Figure 2 This is a schematic diagram of the overall structure of a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the flow regulating component in a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0054] Figure 4 This is a schematic diagram of the impact component in a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0055] Figure 5 This is a schematic diagram of the installation structure of the connecting rod and blade holder in the oil cementing mixer provided in an embodiment of the present invention;

[0056] Figure 6 A schematic diagram of the installation structure of the striking component in a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0057] Figure 7 A schematic diagram of the installation structure of the universal adjustment seat, corrugated gear, gear motor, support rod, universal ball joint and support compression spring in the oil cementing mixing agitator provided in the embodiment of the present invention;

[0058] Figure 8 This is a schematic diagram of the installation structure of the transverse connecting rod in the oil well cementing mixer provided in an embodiment of the present invention.

[0059] Figure 9 This is a schematic diagram of the stirring component in a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0060] Figure 10 This is a schematic diagram of the structure of multiple stirring components in a mixing agitator for oil well cementing provided in an embodiment of the present invention;

[0061] Figure 11 This is a schematic diagram of the installation structure of the mixing component and the oscillating hammer in the oil cementing mixer provided in an embodiment of the present invention.

[0062] Icons: 1-Mixing tank; 2-Ash feeding box; 3-Ash outlet; 4-Ash outlet spiral pipe; 5-Ash outlet direct spray pipe; 6-Conical head; 7-Nozzle housing; 8-Flow regulating spring; 9-Central ash outlet hole; 10-Connecting rod; 11-Guide seat; 12-Vibrating hammer; 13-Guide rod; 14-Blade body; 15-Eccentric turntable; 16-Blade holder; 17-Connecting plate; 18-Main water inlet tank; 19-Atomizing component; 20-Ash inlet flange; 21-Air inlet flange; 22-Atomizing water inlet pipe; 23-Main water inlet pipe; 24-Side water inlet pipe; 25-Atomizing support 26-Rotating nozzle; 27-Universal adjustment seat; 28-Wave gear; 29-Gear motor; 30-Support rod; 31-Universal ball joint; 32-Support compression spring; 33-Transverse guide rod; 34-Transverse connecting rod; 35-Side motor; 36-Moving plate; 37-Agitator motor; 38-Electric push rod; 39-Moving seat; 40-Fixed seat; 41-Upper connecting rod blade; 42-Main agitator blade; 43-Lower connecting rod blade; 44-Vertical guide; 45-Swing rod; 46-Support seat; 47-Swing hammer; 48-Swing compression spring; 49-Mulch outlet. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0064] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0065] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0066] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0067] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0068] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0070] Existing mixing and blending systems for producing oil well cement cannot automatically adjust the discharge flow rate according to different feed flow rates, affecting the uniformity of the mud.

[0071] In view of this, such as Figure 1 , Figure 2 , Figure 3 As shown, the oil well cementing mixing agitator provided in this embodiment includes: a mixing tank 1, an ash feeding box 2, and a flow regulating component; the mixing tank 1 is provided with a mixing chamber; the bottom of the ash feeding box 2 extends through the top of the mixing tank 1 into the mixing chamber, and the bottom of the ash feeding box 2 is provided with a trumpet-shaped ash outlet 3, the end of the ash outlet 3 is connected to a plurality of angled ash outlet spiral pipes 4, and the side wall of the ash outlet 3 is connected to a plurality of vertically arranged ash outlet direct injection pipes 5; the ash outlet ends of the ash outlet spiral pipes 4 and the ash outlet direct injection pipes 5 are all connected to the flow regulating component, and the flow regulating component is provided with a conical head 6 for adjusting the width of the ash outlet channel according to the ash outlet flow rate.

[0072] The oil well cementing mixing agitator provided in this embodiment has the following characteristics: When the ash discharge flow rate is small, the cone head 6 experiences less ash discharge impact force, and the ash discharge channel width is larger, resulting in an increased opening to reduce the impact on the flow rate. When the flow rate is large, in order to increase the swirling degree at the ash discharge point and achieve a uniform mixing effect, the cone head 6 experiences increased ash discharge impact force, and the ash discharge channel width is smaller, resulting in a smaller opening and increased ash outlet flow velocity, thus increasing the swirling effect and enhancing the mixing effect. This allows the ash discharge velocity and flow rate to be automatically adjusted according to the mixing capacity during the mixing process, alleviating the technical problem in the existing oilfield cementing material mixing and stirring systems where the mixing method is relatively simple and cannot achieve automatic adjustment and mixing of mud at different flow rates, affecting the uniformity of the mud.

[0073] In an optional embodiment, the flow regulating component further includes a nozzle housing 7 and a flow regulating spring 8; the nozzle housing 7 has a flow regulating cavity, a conical head 6 is disposed in the flow regulating cavity, and the distance between the conical head 6 and the inner wall of the nozzle housing 7 forms an ash discharge channel; one end of the flow regulating spring 8 is connected to the conical head 6, and the other end of the flow regulating spring 8 is connected to the top inner wall of the nozzle housing 7, and the flow regulating spring 8 is used to make the conical head 6 have a tendency to move toward the ash discharge end.

[0074] Specifically, the nozzle housing 7 is fixed to the ash discharge end of the ash discharge spiral pipe 4 and the ash discharge direct injection pipe 5, and the nozzle housing 7 is connected to the ash discharge spiral pipe 4 or the ash discharge direct injection pipe 5, so that the mixture of gas and ash in the ash discharge spiral pipe 4 or the water discharge direct injection pipe can enter the flow regulating chamber in the nozzle housing 7. The nozzle housing 7 is provided with a nozzle outlet at the end away from the ash discharge end. The conical head 6 moves towards the nozzle outlet under the force of the gas and ash mixture, changing the ash discharge channel formed between the outer wall of the conical head 6 and the inner wall of the nozzle housing 7.

[0075] A conical head 6 passes through the nozzle housing 7 via a connecting rod. A flow regulating spring 8 is fitted over the connecting rod. The flow regulating spring 8 is specifically configured as a compression spring. The elastic potential energy generated by the flow regulating spring 8 acts on the conical head 6, causing the conical head 6 to tend to move away from the nozzle outlet. When the flow rate of the gas and ash mixture ejected from the ash discharge spiral pipe 4 or the ash discharge direct injection pipe 5 is large, the conical head 6 experiences a large impact force, and the conical head 6 moves closer to the nozzle outlet, resulting in a narrower ash discharge channel and a smaller ash discharge flow rate, thus restricting ash discharge. When the flow rate of the gas and ash mixture ejected from the ash discharge spiral pipe 4 or the ash discharge direct injection pipe 5 is small, the conical head 6 experiences a small impact force, and the elastic action of the flow regulating spring 8 causes the conical head 6 to move away from the nozzle outlet, resulting in a wider ash discharge channel and a larger ash discharge flow rate, thus achieving adaptive flow rate adjustment.

[0076] like Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, in order to prevent ash accumulation in the ash feeding box 2, the oil cementing mixing agitator also includes a striking component, which is disposed inside the ash outlet 3, and a central ash outlet hole 9 is provided in the middle of the ash outlet 3, so that the mixture of gas and ash in the ash feeding box 2 can be discharged through the central ash outlet hole 9.

[0077] The striking components include a connecting rod 10, a guide seat 11, a vibratory hammer 12, a guide rod 13, a blade body 14, an eccentric turntable 15, and a blade holder 16. One end of the connecting rod 10 is connected to the outer wall of the ash outlet 3, and the other end of the connecting rod 10 is connected to the guide seat 11. The connecting rod 10 fixes the guide seat 11 to the inner outer wall of the trumpet-shaped ash outlet 3.

[0078] In order to guide the vibratory hammer 12, a sliding path is provided in the guide seat 11. The vibratory hammer 12 is slidably connected to the guide seat 11 and moves along the sliding path. Specifically, a sliding hole is opened on the guide seat 11, the vibratory hammer 12 is placed in the sliding hole, and the vibratory hammer 12 can reciprocate in the sliding hole to strike the ash feeding box 2.

[0079] In order to drive the vibratory hammer 12 to move back and forth, the blade body 14 is located below the central ash outlet 9. The bottom of the blade body 14 is connected to the eccentric turntable 15. The bottom of the eccentric turntable 15 has a connecting plate 17. One end of the guide rod 13 is hinged to the connecting plate 17, and the other end of the guide rod 13 is hinged to the vibratory hammer 12. The blade body 14 rotates along its own axis under the action of the gas ejected from the central ash outlet 9, and drives the eccentric turntable 15 to rotate. The guide rod 13 drives the vibratory hammer 12 to move along the sliding path as the eccentric turntable 15 rotates, striking the outer wall of the ash outlet 3.

[0080] To ensure that the blade body 14 can only rotate and cannot move, multiple blade holders 16 are provided. The blade holders 16 are L-shaped. The vertical side of the L-shaped blade holder 16 is connected to the outer wall of the ash outlet 3. The horizontal side of the L-shaped blade holder 16 has a limiting groove that can abut against the blade body 14. The shape of the limiting groove is adapted to the outer circumference of the blade body 14. Multiple limiting grooves are arranged to form a limiting area for restricting the movement of the blade body 14. The outer wall of the blade body 14 is recessed in the axial direction to form a circumferential groove. The limiting groove at the end of the horizontal side of the L-shaped blade holder 16 extends into the circumferential groove, thereby restricting the movement of the blade body 14.

[0081] In an optional embodiment, the mixing agitator for oil cementing further includes a main water inlet tank 18, an atomizing component 19, an ash inlet flange 20, and an air inlet flange 21. The atomizing component 19 is located at the top inside the ash delivery box 2, and the main water inlet tank 18 is located above the mixing tank 1. The main water inlet tank 18 is connected to the atomizing component 19 through an atomizing water inlet pipe 22. The atomizing component 19 includes an atomizing nozzle and a nozzle mounting plate for mounting the atomizing nozzle. The atomizing nozzle atomizes the liquid transported by the atomizing water inlet pipe 22 and sprays it into the ash delivery box 2, thereby reducing the ash concentration of the dust carried in the air. This allows the ash to be mixed and transported by air and liquid particles. The initially mixed solid-liquid-gas three-phase mixture reaches the lower funnel-shaped ash outlet 3 through the ash delivery box 2 and is sprayed into the mixing tank 1 through the ash outlet spiral pipe 4 and the ash outlet direct injection pipe 5.

[0082] The ash feeding box 2 is connected to the ash inlet flange 20. Four ash inlet flanges 20 are evenly distributed around the circumference and connected to the upper end of the ash feeding box 2. The air port flange 21 is located on the pipe body of the ash inlet flange 20. External air can enter the pipe body of the ash inlet flange 20 to achieve air and ash premixing. The small flow of air carries the ash, preventing the accumulation and sedimentation of ash.

[0083] like Figure 7 , Figure 8As shown, in an optional embodiment, the mixing agitator for oil well cementing also includes a main water inlet pipe 23, a side water inlet pipe 24, and multiple atomizing branch pipes 25; one end of the main water inlet pipe 23 is connected to the main water inlet tank 18, and the other end of the main water inlet pipe 23 is connected to the mixing tank 1 along the tangential direction of the mixing tank 1; the main water inlet pipe 23 is located below the liquid surface of the mixing chamber inside the mixing tank 1, and is not perpendicular to the tank wall but has a certain angle, so the water flow after the main water inlet pipe 23 enters the mixing tank will also present a vortex shape. When the vortex dust meets the vortex water flow, the overall mixing effect will be greatly enhanced.

[0084] Side water inlet pipes 24 are located on the side of the main water inlet tank 18, with multiple pipes evenly distributed circumferentially. One end of the side water inlet pipe 24 is connected to the main water inlet tank 18, and the other end is connected to multiple atomizing branch pipes 25 spaced vertically. One end of the atomizing branch pipe 25 extends into the mixing tank 1 and is connected to the rotating nozzle 26. The rotating nozzle 26 is configured to move relative to the atomizing branch pipe 25. When the ash from the ash discharge spiral pipe 4 comes out, it forms a swirling flow, which will inevitably cause scouring of the mixing tank wall. During the process, scale will form on the pipe wall. To prevent the spiral tube from scouring the tank wall when discharging ash, and to further atomize the ash into fine atomized particles, the side water inlet pipe 24 is arranged in three rows (upper, middle, and lower) corresponding to the nozzles. This achieves full atomization coverage of the upper part of the mixing tank 1. In addition, to make the ash atomization more even, the nozzle 26 can be rotated up and down and left and right. That is, rotating the nozzle 26 can achieve full coverage atomization of the upper part of the mixing tank, ensuring the uniformity and consistency of ash atomization.

[0085] In addition, a spherical valve tube is provided at the end of the atomizing branch pipe 25, and a spherical interface is provided at the end of the rotating nozzle 26 near the spherical valve tube. The spherical interface is fitted onto the spherical valve tube, so that the spherical interface can rotate freely inside the spherical valve tube, thereby realizing the free rotation of the rotating nozzle 26.

[0086] In an optional embodiment, the mixing agitator for oil well cementing also includes a universal adjustment seat 27, a corrugated gear 28, a gear motor 29, a support rod 30, a universal ball joint 31, and a support compression spring 32. The universal adjustment seat 27 is provided with a plurality of through holes for mounting the rotating nozzle 26. The rotating nozzle 26 passes through the through holes, and the number of through holes corresponds one-to-one with the number of rotating nozzles 26. The rotation of the rotating nozzle 26 can be driven by controlling the orientation of the universal adjustment seat 27.

[0087] To drive the rotating nozzle 26 to rotate vertically, a corrugated gear 28 is installed above the mixing tank 1. The bottom of the corrugated gear 28 has a corrugated toothed ring. One end of the support rod 30 is connected to the corrugated toothed ring via a universal ball joint 31, and the other end of the support rod 30 passes through the mixing tank 1 and is connected to the universal adjustment seat 27. A gear motor 29 is connected to the corrugated gear 28. The driving force generated by the gear motor 29 drives the corrugated gear 28 to rotate along its axis. Because the corrugated toothed ring is corrugated vertically, its rotation causes the universal adjustment seat 27 to move vertically, which in turn causes the rotating nozzle 26 to rotate vertically.

[0088] To enable the rotating nozzle 26 to reciprocate up and down, a support spring 32 is provided. The outer wall of the support rod 30 extends outward and has an abutment protrusion. One end of the support spring 32 is connected to the abutment protrusion, and the other end of the support spring 32 is connected to the top of the mixing tank 1. The elastic potential energy generated by the support spring 32 causes the support rod 30 to have a tendency to move towards the corrugated tooth ring, so that the support rod 30 is in close contact with the corrugated tooth ring. Thus, the rotating nozzle 26 can reciprocate up and down as the corrugated tooth ring rotates, achieving a comprehensive atomization covering the vertical position in space.

[0089] In an optional embodiment, the mixing agitator for oil well cementing further includes a transverse guide rod 33, a transverse connecting rod 34, and a lateral motor 35; the transverse guide rod 33 is connected to the side of the universal adjustment seat 27, the end of the transverse connecting rod 34 is hinged to the transverse guide rod 33, the lateral motor 35 is mounted on the outer surface of the mixing tank 1, the drive shaft of the lateral motor 35 extends into the mixing tank 1 and is connected to the transverse connecting rod 34, the power generated by the lateral motor 35 drives the transverse connecting rod 34 to rotate in the horizontal direction, drives the universal adjustment seat 27 to swing left and right, and then drives the rotating nozzle 26 to swing left and right through the universal adjustment seat 27, so as to achieve atomization coverage on the left and right sides of the atomization chamber.

[0090] In addition, the side water inlet pipe 24 is divided into three rows after water enters, and each row has a valve. The atomizing nozzles of the upper, middle and lower rows can be selectively opened or closed according to the actual ash flow rate, so as to achieve adjustable atomization.

[0091] like Figure 9 , Figure 10 , Figure 11 As shown, in an optional embodiment, the mixing agitator for oil well cementing further includes a movable plate 36, a mixing motor 37, an electric push rod 38, a movable base 39, a fixed base 40, and a mixing component; the end of the electric push rod 38 is connected to the movable plate 36, the mixing motor 37 is mounted on the movable plate 36, the drive shaft of the mixing motor 37 extends into the mixing tank 1, and the driving force generated by the electric push rod 38 acts on the movable plate 36, driving the movable plate 36 to rise and fall, thereby driving the mixing motor 37 to rise and fall, adjusting the position of the mixing component connected to the mixing motor 37 in the mixing tank 1.

[0092] The fixed base 40 is fixed on the bottom wall of the mixing tank 1, and the movable base 39 is located above the fixed base 40. The upper and lower ends of the mixing component are connected to the fixed base 40 and the movable base 39 respectively. Both the fixed base 40 and the movable base 39 are connected to the drive shaft of the mixing motor 37, so that the fixed base 40, the movable base 39 and the mixing component rotate together with the drive shaft of the mixing motor 37, and the position of the mixing component is adjusted by the raising and lowering of the movable plate 36.

[0093] In an optional embodiment, the stirring component includes an upper connecting rod blade 41, a main stirring blade 42, a lower connecting rod blade 43, and a vertical guide 44. One end of the upper connecting rod blade 41 is hinged to the movable seat 39, and the other end of the upper connecting rod blade 41 is hinged to the main stirring blade 42. One end of the lower connecting rod blade 43 is hinged to the fixed seat 40, and the other end of the lower connecting rod blade 43 is hinged to the main stirring blade 42. The upper connecting rod blade 41, the main stirring blade 42, and the lower connecting rod blade 43 are sequentially hinged from top to bottom along the vertical direction. When the stirring motor 37 moves up and down, the stirring radius and height of the main stirring blade 42 will change. When the stirring motor 37 moves down, the movable seat 39 moves toward the fixed seat 40, the main stirring blade 42 expands outward, and the stirring radius increases. When the stirring motor 37 moves up, the movable seat 39 moves away from the fixed seat 40, the stirring height increases, and the stirring radius decreases, making the water and ash more evenly mixed.

[0094] The vertical guide 44 is sleeved on the drive shaft of the stirring component and is connected to the main stirring blade 42. The vertical guide 44 includes a guide sleeve and multiple guide rods connected to the guide sleeve. The guide rods are connected to the main stirring blade 42. The guide sleeve is sleeved on the drive shaft of the stirring motor 37, ensuring that the vertical plane of the main stirring blade 42 is always perpendicular to the ground of the mixing tank.

[0095] In an optional embodiment, the oil well cementing mixer further includes a swing rod 45, a support base 46, a swing hammer head 47, and a swing compression spring 48; one end of the swing rod 45 is hinged to the moving plate 36, the other end of the swing rod 45 is connected to the swing compression spring 48, and the other end of the swing compression spring 48 is connected to the swing hammer head 47; the support base 46 is fixed on the outer surface of the mixing tank 1, and the support base 46 is hinged to the swing rod 45; when the moving plate 36 moves downward, the swing rod 45 moves around the support base 46 toward the direction closer to the mixing tank 1, and the swing hammer head 47 strikes the mixing tank 1.

[0096] Specifically, the swing rod 45 is hinged to the moving plate 36. When the moving plate 36 moves up and down, the swing rod 45 is supported by the support seat 46 as a lever and reciprocates to vibrate and strike the tank wall. The swing hammer head 47 absorbs the impact through the swing spring 48 to prevent damage to the tank wall and effectively prevents mud from sticking to the tank wall. The mud after being fully mixed is output through the mud outlet 49 and pumped into the ground.

[0097] In addition, an exhaust valve is installed at the top of the mixing tank 1. When the upper cavity of the mixing tank reaches a certain pressure, the exhaust valve is used to release pressure and ensure the stable operation of the entire device.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mixing agitator for oil well cementing, characterized in that, include: Mixing tank, ash delivery box and flow regulating components; The mixing tank is equipped with a mixing chamber inside. The bottom of the ash feeding box extends through the top of the mixing tank into the mixing chamber, and the bottom of the ash feeding box is provided with a funnel-shaped ash outlet. The end of the ash outlet is connected to multiple angled ash outlet spiral pipes, and the side wall of the ash outlet is connected to multiple vertically arranged ash outlet direct spray pipes. The ash discharge ends of both the ash discharge spiral pipe and the ash discharge direct injection pipe are connected to the flow regulating component, and the flow regulating component is provided with a conical head for adjusting the width of the ash discharge channel according to the ash discharge flow rate. The flow regulating component also includes a nozzle housing and a flow regulating spring; The nozzle housing has a flow regulating cavity, the conical head is disposed in the flow regulating cavity, and the distance between the conical head and the inner wall of the nozzle housing forms the ash discharge channel; One end of the flow regulating spring is connected to the conical head, and the other end of the flow regulating spring is connected to the top inner wall of the nozzle housing. The flow regulating spring is used to give the conical head a tendency to move toward the ash discharge end. The oil cementing mixing agitator also includes a striking component, which is disposed inside the ash outlet, and a central ash outlet hole is provided in the middle of the ash outlet. The striking component includes a connecting rod, a guide seat, a vibrating hammer, a guide rod, a blade body, an eccentric turntable, and a blade holder; One end of the connecting rod is connected to the outer wall of the ash outlet, and the other end of the connecting rod is connected to the guide seat. The guide seat provides a sliding path, the vibrating hammer is slidably connected to the guide seat, and the vibrating hammer moves along the sliding path. The blade body is located below the central ash outlet. The bottom of the blade body is connected to the eccentric turntable. The bottom of the eccentric turntable has a connecting plate. One end of the guide rod is hinged to the connecting plate, and the other end of the guide rod is hinged to the vibrating hammer. The blade body is configured to rotate under the action of the gas ejected from the central ash outlet, and drive the eccentric turntable to rotate, so as to drive the vibrating hammer to move along the sliding path through the guide rod and strike the outer wall of the ash outlet. Multiple blade holders are provided. One end of the blade holder is connected to the outer wall of the ash outlet, and the other end of the blade holder has a limiting groove that can abut against the blade body. The multiple limiting grooves surround a limiting area for restricting the movement of the blade body.

2. The mixing agitator for oil well cementing according to claim 1, characterized in that, The oil cementing mixing agitator also includes a main water inlet tank, an atomizing component, an ash inlet flange, and an air inlet flange; The atomizing component is disposed at the top inside the ash feeding box, and the main water inlet box is connected to the atomizing component through an atomizing water inlet pipe. The atomizing component is used to form atomization inside the ash feeding box. The ash feeding box is connected to the ash inlet flange, and the ash inlet flange is connected to the air outlet flange, so that the air and ash are premixed in the ash inlet flange before entering the ash feeding box.

3. The mixing agitator for oil well cementing according to claim 2, characterized in that, The oil cementing mixing agitator also includes a main water inlet pipe, a side water inlet pipe, and multiple atomizing branch pipes; One end of the main water inlet pipe is connected to the main water inlet tank, and the other end of the main water inlet pipe is connected to the mixing tank along the tangential direction of the mixing tank body; One end of the side water inlet pipe is connected to the main water inlet tank, and the other end of the side water inlet pipe is connected to a plurality of atomizing branch pipes spaced apart in the vertical direction. One end of the atomizing branch pipe extends into the mixing tank and is connected to the rotating nozzle, and the rotating nozzle is configured to be movable relative to the atomizing branch pipe.

4. The mixing agitator for oil well cementing according to claim 3, characterized in that, The oil cementing mixing agitator also includes a universal adjustment seat, a corrugated gear, a gear motor, a support rod, a universal ball joint, and a support compression spring; The universal adjustment seat is provided with multiple through holes for fitting the rotating nozzle. The corrugated gear is disposed above the mixing tank, and a corrugated tooth ring is disposed at the bottom of the corrugated gear. One end of the support rod is connected to the corrugated tooth ring through the universal ball joint, and the other end of the support rod passes through the mixing tank and is connected to the universal adjustment seat. The outer wall of the support rod extends outward and is provided with an abutting protrusion. One end of the support spring is connected to the abutting protrusion, and the other end of the support spring is connected to the top of the mixing tank. The support spring is used to make the support rod have a tendency to move toward the corrugated tooth ring so that the support rod is in close contact with the corrugated tooth ring. The gear motor is connected to the corrugated gear, and the gear motor is configured to drive the corrugated gear to rotate, so as to drive the universal adjustment seat to move up and down through the corrugated gear ring, and drive the rotating nozzle to rotate up and down.

5. The mixing agitator for oil well cementing according to claim 4, characterized in that, The oil cementing mixing agitator also includes a transverse guide rod, a transverse connecting rod, and a lateral motor; The transverse guide rod is connected to the side of the universal adjustment seat, the end of the transverse connecting rod is hinged to the transverse guide rod, the lateral motor is mounted on the outer surface of the mixing tank, the drive shaft of the lateral motor extends into the mixing tank and is connected to the transverse connecting rod, and the lateral motor is configured to drive the transverse connecting rod to rotate in the horizontal direction, so as to drive the rotating nozzle to swing left and right through the universal adjustment seat.

6. The mixing agitator for oil well cementing according to claim 1, characterized in that, The oil cementing mixing agitator also includes a movable plate, a mixing motor, an electric push rod, a movable base, a fixed base, and mixing components; The end of the electric push rod is connected to the movable plate, the stirring motor is mounted on the movable plate, the drive shaft of the stirring motor extends into the stirring tank, the fixed seat is fixed on the bottom wall of the stirring tank, the movable seat is located above the fixed seat, the upper and lower ends of the stirring component are respectively connected to the fixed seat and the movable seat, and both the fixed seat and the movable seat are connected to the drive shaft of the stirring motor, so that the fixed seat, the movable seat and the stirring component rotate together with the drive shaft of the stirring motor.

7. The mixing agitator for oil well cementing according to claim 6, characterized in that, The stirring component includes an upper connecting rod blade, a main stirring blade, a lower connecting rod blade, and a vertical guide. One end of the upper connecting rod blade is hinged to the movable seat, and the other end of the upper connecting rod blade is hinged to the main stirring blade. One end of the lower connecting rod blade is hinged to the fixed seat, and the other end of the lower connecting rod blade is hinged to the main stirring blade. The vertical guide is sleeved on the drive shaft of the stirring component, and the vertical guide is connected to the main stirring blade. The electric push rod is configured to drive the stirring motor to rise and fall via the movable plate, and adjust the distance between the movable seat and the fixed seat to adjust the rotation radius of the main stirring blade.

8. The mixing agitator for oil well cementing according to claim 7, characterized in that, The oil cementing mixing agitator also includes a swing rod, a support base, a swing hammer, and a swing compression spring; One end of the swing rod is hinged to the moving plate, the other end of the swing rod is connected to the swing spring, and the other end of the swing spring is connected to the swing hammer head; The support base is fixed to the outer surface of the mixing tank, and the support base is hinged to the swing rod; When the moving plate moves downward, the swing rod moves around the support base toward the direction of the mixing tank, and the swing hammer strikes the mixing tank.

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