Two-phase flow uniform mixing device

Abstract

The present invention discloses a two-phase flow uniform mixing device comprising: a flow guide body comprising a hollow cylindrical body and a mixing and flow disturbance unit on its outer surface; and a flow guide jacket in the form of a hollow cylinder coaxially sleeved on the outer side of the flow guide body, with a flow disturbance channel formed between the flow guide jacket and the mixing and flow disturbance unit. The device achieves thorough mixing of stratified water and oil before crude oil enters an AICD, enabling the AICD at different locations to function effectively.

Description

Technical Field

[0001] The invention relates to a fluid mixing device, in particular to a two-phase flow uniform mixing device. Background Art

[0002] During oil production, the production profile of long horizontal wells is difficult to maintain uniformly due to factors such as the heel-toe effect, reservoir heterogeneity, reservoir anisotropy, and natural fractures. Once a water (or gas) cone forms in an oil well, the viscosity of water (or gas) is lower than that of oil, so it quickly forms a channel at the cone and enters the oil pipeline. This phenomenon is known as water (or gas) breakthrough in the oil field. Water breakthrough not only suppresses the oil production of a well itself, but also the production of other wells.

[0003] To address the problem of water (or gas) breakthrough in oilfields, scientists at home and abroad, after years of research, have developed a method for installing inflow control devices (ICDs) on the horizontal sections of horizontal well completions. The core principle of ICDs is that water, gas, and oil have different physical properties (viscosity and density), resulting in different additional pressure drops when flowing through a specifically designed device. By controlling the flow rates of water, gas, and oil, the uniformity of the inflow plane along the entire horizontal plane of the horizontal well completion is ensured.

[0004] ICDs are categorized as passive inflow control devices (PICDs) and adaptive inflow control devices (AICDs) based on whether the flow resistance rating (FRR) is constant. Because the FRR of a PICD is constant, once a water (or gas) cone forms in a horizontal completion, the low-viscosity water (or gas) will quickly fill the entire wellbore, causing a sharp drop in oil production.

[0005] However, during horizontal well production, the heel-toe effect occurs due to the different pressure drops at the heel and toe ends. This heel-toe effect gradually develops, leading to bottom water ridge intrusion. To mitigate this, various measures have been implemented, including traditional variable-density screen completion, central pipe completion, ICD (Inflow Control Device) completion, and the latest intelligent AICD (Autonomous Inflow Control Device) completion.

[0006] All of the above measures can control bottom water ridge intrusion to a certain extent. However, their application is limited because variable-density screen completions and central pipe completions cannot adjust parameters in real time based on downhole conditions, and ICD completions cannot intelligently identify oil and water.

[0007] The new intelligent AICD water control device can realize intelligent water control based on the viscosity difference between water and oil. However, the intelligent water control of AICD water control device in horizontal wells is still in its early stages.

[0008] The flow channel of a traditional AICD consists of five parts: the inlet, the main channel, the branch channel, the disc, and the outlet. A fluid with a certain flow rate enters the main channel from the inlet of the AICD. When the fluid flows through the intersection of the main channel and the branch channel, the following different situations may occur:

[0009] (1) Due to its low viscosity and high density, the oil will mostly flow into the main channel under the dominant effect of inertia. At the same time, because the fluid entering the AICD disc tangentially through the main channel has a high tangential flow velocity, it will rotate tangentially about the outlet center inside the AICD disc and accelerate rapidly as it approaches the center outlet, causing the pressure loss inside the AICD disc to increase. Under the condition of constant inlet pressure, the flow rate at the AICD outlet will decrease.

[0010] (2) Similarly, oil with little or no water seepage will flow into the branch channel due to its high viscosity and low density, driven primarily by viscous forces. Fluid flowing radially into the AICD disc through the branch channel has no rotational inertia about the outlet center and therefore flows easily out of the outlet, resulting in minimal pressure loss through the AICD. Given the same inlet-outlet pressure differential, the flow rate at the AICD outlet will increase.

[0011] The above is the working principle of AICD. By suppressing water flow and ensuring stable oil flow, it achieves the effect of suppressing water and increasing oil production, thereby suppressing water breakthrough in oil wells.

[0012] AICD is mainly used in horizontal wells as the only channel for crude oil to enter the oil pipeline from the formation. To meet the demand for crude oil production, multiple AICD pup joints are often installed in the horizontal section.

[0013] Please refer to Figures 1(1) to (3) for the existing AICD pup joint structure and its CC and DD cross-sectional views. The arrows indicate the flow direction, and three AICDs 800 are installed in the cross section of this example pup joint.

[0014] In the figure, an annular space is usually formed between the horizontal section casing 801 and the base pipe 802 of the AICD short section. Once crude oil enters the annular space, oil-water stratification is very likely to occur. As shown in the DD cross-sectional view of Figure 1 (3), the oil with low density and large volume will be stratified on the water with high density and small volume. This causes the AICD 800 at different positions to face fluids with different properties. As shown in the CC cross-sectional view of Figure 1 (2), the AICD 800 at the 12 o'clock position is in the open state, while the AICD 800 at the 4 o'clock and 8 o'clock positions are in the closed state. Therefore, the normal functions of all AICDs cannot be exerted.

[0015] In view of the above problems, there is an urgent need for a mixing device to fully mix the stratified water and oil before the crude oil enters the AICD, so that the AICDs at different positions can play a role. Summary of the Invention

[0016] It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed.

[0017] In view of the above problems, the present invention designs a two-phase flow uniform mixing device, which fully mixes the stratified mixed liquid through the spiral flow channels of the liquid inlet part and the mixing part, and achieves uniform mixing of the two in the mixing section.

[0018] In order to achieve the above-mentioned object of the invention, the present invention provides a two-phase flow uniform mixing device, characterized in that it includes:

[0019] The flow guide body includes a hollow cylindrical body and a mixing and spoiling unit on its outer side;

[0020] The flow-guiding jacket is in the shape of a hollow cylinder and is coaxially sleeved on the outside of the flow-guiding main body of the hollow cylindrical body. A flow-disturbing flow channel is formed between the flow-guiding jacket and the mixing and spoiling unit.

[0021] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0022] The mixing spoiler unit includes a plurality of spiral protrusions.

[0023] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0024] The mixing spoiler unit further includes a plurality of spiral grooves, and the spiral grooves and the spiral protrusions are arranged in a continuous or discontinuous manner.

[0025] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0026] The flow guide body further includes a liquid inlet portion and a flow mixing portion, and the liquid inlet portion includes a plurality of flow channel inlets of the device inlet.

[0027] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0028] The flow area of the mixing portion is 100 to 150 square millimeters.

[0029] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0030] The flow guide body further includes a primary mixing portion located between the liquid inlet portion and the flow mixing portion. The primary mixing portion is formed by the space between the hollow cylindrical body and the mixing flow guide jacket.

[0031] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0032] The mixing turbulence unit further comprises a plurality of concave annular bodies and convex annular bodies arranged in parallel on the circumferential surface of the hollow cylindrical body, and at least one flow channel outlet is provided on the convex annular body, which together with the main flow channel between the concave annular bodies constitutes the turbulence flow channel.

[0033] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0034] A flow-interfering convex column is further arranged in the main body flow channel.

[0035] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0036] The cross section of the spoiler convex column includes any one of a rectangle, an ellipse and a triangle.

[0037] Preferably, the present invention further provides a two-phase flow uniform mixing device, characterized in that:

[0038] The flow guide sleeve and the flow guide body are an integrated structure.

[0039] The device of the present invention solves the problem of oil and water stratification in the annular space, promotes the full mixing of oil and water in the entire annular space, thereby greatly improving the oil production efficiency of the entire horizontal well and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts. In addition, although the terms used in this disclosure are selected from commonly known and commonly used terms, some of the terms mentioned in this disclosure may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description herein. In addition, it is required that the present disclosure be understood not only by the actual terms used, but also by the meaning implied by each term.

[0041] The above and other objects, features and advantages of the present invention will become apparent to those skilled in the art from the detailed description of the present invention with reference to the accompanying drawings below.

[0042] Figures 1(1) to (3) are schematic diagrams of the existing AICD short section structure and its CC and DD cross-sectional views respectively;

[0043] Figures 2 (1) and (2) are schematic structural diagrams of the guide body and guide jacket of the first preferred embodiment of the device of the present invention;

[0044] Figure 2 (3) is a three-dimensional schematic diagram of Figure 2 (1);

[0045] Figure 3 is a cross-sectional view of the device of the present invention applied to the AICD flow channel system;

[0046] Figure 4 2 is a schematic structural diagram of a mixing spoiler unit in a second preferred embodiment of the device of the present invention;

[0047] Figure 5 2 is a schematic structural diagram of a mixing spoiler unit in a third preferred embodiment of the device of the present invention;

[0048] Figure 6 2 is a schematic structural diagram of a mixing spoiler unit in a fourth preferred embodiment of the device of the present invention;

[0049] Figure 7 2 is a schematic structural diagram of a mixing spoiler unit in a fifth preferred embodiment of the device of the present invention;

[0050] Figure 8 It is a structural diagram of the mixing spoiler unit in the sixth preferred embodiment of the device of the present invention.

[0051] Reference numerals

[0052] 800 - AICD

[0053] 801 - Casing

[0054] 802 - Base tube

[0055] 803 - Screen Tube

[0056] 101 - Import

[0057] 102 - Exit

[0058] 103 - Main channel

[0059] 104 - Tributary

[0060] 105 - Disc

[0061] 11 - Diversion jacket

[0062] 12 - diversion body

[0063] 120 - Hollow cylindrical body

[0064] 121-Liquid inlet

[0065] 122 - Mixed Flow Section

[0066] 123 - Flow channel entrance

[0067] 124——Junior Department

[0068] 125 - Hybrid spoiler unit

[0069] 126 - Runner outlet

[0070] 127 - Main body flow channel

[0071] 128 - spoiler convex cylinder DETAILED DESCRIPTION

[0072] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0073] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0074] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0075] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0076] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0077] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0078] Example 1

[0079] See Figure 2(1) and 2(2) , are schematic structural diagrams of the mixing guide body 12 and the guide sleeve 11 in the first preferred embodiment of the device of the present invention, and FIG2 (3) is a schematic three-dimensional structural diagram of the guide body 12.

[0080] The two-phase flow uniform mixing device of the present invention includes a flow guide body 12, and the mixing and perturbation unit is shown in Figure 2 (1); Figure 2 (2) schematically shows a flow guide sleeve 11, which is a hollow cylindrical body and is coaxially sleeved on the outside of the flow guide body 12. The two can be separated into two independent components or can be an integrated structure.

[0081] Please further refer to the structure of the mixing and disturbing unit 12 of the guide body shown in Figure 2 (1).

[0082] Among them, the mixing turbulence unit guide body 12 includes a hollow cylindrical body 120, and a mixing turbulence unit 125 on its outer circumferential surface. The mixing turbulence unit 125 in this embodiment includes upper and lower sections of continuous protrusions similar to external threads, thereby forming two front and rear flow channels, respectively called the liquid inlet part 121 and the mixing part 122.

[0083] During use, two-phase liquids such as oil and water axially enter the flow channel formed by the flow guide body 12 and the flow guide sleeve 11, enter from the liquid inlet 121, and then enter the mixing section 122, which is located on the flow channel at the rear end of the liquid inlet 121.

[0084] In the above embodiment, the flow passages of the liquid inlet portion 121 and the flow mixing portion 122 are in the form of external threads, but this structure is not limited to this structure, as long as a flow passage can be formed and a closed flow passage can be formed between the mixing and flow guiding sleeve 11 .

[0085] It should be noted that the flow channel of the liquid inlet portion 121 is provided with a plurality of flow channel inlets 123 at its inlet end. Usually, the number N of the flow channel inlets is greater than or equal to 3, so as to facilitate the entry of more two-phase liquids, such as oil and water. The more flow channel inlets 123 there are, the more uniform the sampling is.

[0086] As shown in the figure, the flow area of the mixing portion 122 is: a×b, which is 100 to 150 square millimeters. Under these conditions, sufficient shear force can be generated, and the oil and water are fully mixed to form an oil-water mixture.

[0087] In addition, in the preferred embodiment, a primary mixing section 124 may be provided between the liquid inlet 121 and the mixing section 122. The primary mixing section 124 is used to initially mix and transition the two-phase liquid entering from the liquid inlet 121 before the liquid enters the mixing section 122 at the rear end. The primary mixing section 124 is formed by the space between the hollow cylindrical body 120 and the flow guide jacket 11.

[0088] Figure 3 It is a cross-sectional structural diagram of the device shown in Figure 2 applied to the AICD flow channel system.

[0089] The two-phase flow uniform mixing device of the present invention is installed between the AICD valve seat 21 and the AICD outer sheath 22. A and B represent two phases of flow, corresponding to two fluids with different physical properties. In oilfield applications, A represents the lighter oil layer and B represents the denser water layer. Before entering the device, the two liquids are clearly separated.

[0090] When the oil and water enter the balanced mixing device through the liquid inlet 121 in layers, the liquid inlet 121 is provided with a plurality of flow channel inlets 123 at the inlet, so that more fluids can enter the device.

[0091] Afterwards, the oil A and water B enter the primary mixing section 124 and are preliminarily mixed in this independent space.

[0092] Then, it enters the flow channel of the mixing section 122. Since the flow area of the mixing channel meets certain conditions, that is, the area is between 100 and 150 square millimeters, a sufficiently large shear force can be generated to achieve sufficient mixing of the two-phase flow. In this way, the oil and water are fully mixed after passing through this device.

[0093] After the oil-water mixture flows out of the two-phase flow uniform mixing device, it returns to the AICD device through the AICD inlet 23 shown in the figure. To avoid the mixture from separating again, the flow path between the mixture outlet and the AICD inlet 23 is as small as possible.

[0094] The device of the present invention is usually made of 316L stainless steel, but other materials can be used according to the properties of different liquids.

[0095] Example 2

[0096] Figure 4 It is a schematic structural diagram of the mixing spoiler unit in the second preferred embodiment of the device of the present invention.

[0097] The flow guide body 12 of this embodiment also includes a hollow cylindrical body 120 , on the outer circumference of which a plurality of flow channels are provided.

[0098] Different from Example 1, the mixing turbulence unit 125 is composed of a plurality of discontinuous spiral protrusions, and a flow channel outlet 126 is formed between two adjacent spiral protrusions, which together with the main flow channel 127 formed between two spaced spiral protrusions constitute the turbulence flow channel of the device.

[0099] When the two-phase flow enters the device according to the arrow direction A, the oil and water are fully mixed through the flow channel between the flow disturbance units 125, and then flows out of the device from the arrow direction A' and is Figure 3 The AICD entry 23 returns to the AICD system.

[0100] Example 3

[0101] Figure 5 It is a structural diagram of the mixing spoiler unit in the third preferred embodiment of the device of the present invention.

[0102] Similar to the second embodiment, the flow guide body 12 also includes a hollow cylindrical body 120 , on the outer circumference of which a plurality of flow channels are provided.

[0103] In this embodiment, the mixing turbulence unit 125 is composed of a plurality of concave annular bodies and convex annular bodies arranged in parallel on the circumferential surface of the hollow cylindrical body 120. At least one flow channel outlet 126 is opened on the convex annular body, which together with the main body flow channel 127 formed between the concave bodies constitute the turbulent flow channel of this device.

[0104] When the two-phase flow enters the device according to the arrow direction A, the oil and water are fully mixed through the flow channel between the flow disturbance units 125, and then flows out of the device from the arrow direction A' and is Figure 3 The AICD entry 23 returns to the AICD system.

[0105] Example 4

[0106] Figure 6 It is a structural diagram of the mixing spoiler unit in the fourth preferred embodiment of the device of the present invention.

[0107] In this embodiment, the mixing and turbulent flow unit 125 that encloses the flow channel is more complex than previous designs, consisting of a combination of multiple spaced-apart convex annular bodies and axially arranged convex line segments. These combined designs share the same principle: the mixing and turbulent flow unit 125 is designed on the circumferential surface of the flow guide body 120, with a flow channel outlet provided, which together with the main flow channel form the turbulent flow channel of the entire device.

[0108] Example 5

[0109] Figure 7 It is a structural diagram of the mixing spoiler unit in the fifth preferred embodiment of the device of the present invention.

[0110] In the figure, the mixing turbulence unit 125 and the hollow cylindrical body 120 are in a separate structure, and are coaxially sleeved on the outer circumference of the hollow cylindrical body 120. Several grooves are opened in the same direction on the mixing turbulence unit 125 to form the main body flow channel 127. The main body flow channel 127 and the space between the two mixing turbulence units 125 constitute the turbulence flow channel of the entire device.

[0111] It should be noted that, under the improved concept of the present invention, it is also possible to fill the outer circumferential surface of the flow guide body 120 with a spoiler, which also achieves the effect of uniformly mixing the two-phase flow.

[0112] Example 6

[0113] Figure 8It is a structural diagram of the mixing spoiler unit in the sixth preferred embodiment of the device of the present invention.

[0114] The structure of this embodiment is similar to that of embodiment 2. The mixing turbulence unit 125 that forms the flow channel is composed of a number of discontinuous spiral segments. A number of turbulence protrusions 128 are also arranged between the flow channel outlets 126 between two adjacent turbulence units 125, which together with the main flow channel 127 formed between two adjacent mixing turbulence units 125 constitute the turbulence flow channel of this device.

[0115] According to laboratory test data and simulation calculation comparison, the two-phase flow uniform mixing device of the present invention has achieved the expected effect during the design. Under the premise of a certain flow rate, the oil and water are fully mixed, and the mixing rate reaches more than 85%, which fully meets the requirements of AICD use in underground wells. It also has the following advantages:

[0116] First, it solves the problem of oil and water stratification in the annular space and promotes the full mixing of oil and water in the entire annular space;

[0117] Second, ensure that AICDs at different locations can all play their role in controlling water and increasing oil production, and prevent AICDs at low positions from being shut down for long periods of time, thereby increasing AICD utilization efficiency.

[0118] Third, it improves the oil recovery efficiency of the entire horizontal well;

[0119] Fourth, the number of AICDs installed is reduced, lowering costs.

[0120] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosures are merely illustrative and do not constitute limitations on this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and remain within the spirit and scope of the exemplary embodiments of this application.

[0121] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0122] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0123] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values are as accurate as possible within the feasible range.

[0124] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. Two-phase flow uniform mixing device, characterized in that, include: The flow guide body includes a hollow cylindrical body and a mixing and turbulent unit on its outer surface. The flow guide body also includes a liquid inlet and a flow mixing portion. The flow channels of the liquid inlet and the flow mixing portion are in the form of external threads, forming a closed flow channel between the mixing and flow guide jacket. The liquid inlet includes multiple flow channel inlets at the inlet of the device. The flow area of the flow mixing portion is 100 to 150 square millimeters. The guide sleeve is in the shape of a hollow cylinder and is coaxially sleeved on the outside of the guide body of the hollow cylindrical body, and a flow disturbance channel is formed between the guide sleeve and the mixing and spoiling unit; The flow guide body further includes a primary mixing portion located between the liquid inlet portion and the flow mixing portion. The primary mixing portion is formed by the space between the hollow cylindrical body and the mixing flow guide jacket.

2. The two-phase flow uniform mixing device according to claim 1, characterized in that: The mixing spoiler unit includes a plurality of spiral protrusions.

3. The two-phase flow uniform mixing device according to claim 2, characterized in that: The mixing spoiler unit further includes a plurality of spiral grooves, and the spiral grooves and the spiral protrusions are arranged in a continuous or discontinuous manner.

4. The two-phase flow uniform mixing device according to claim 2, characterized in that: The mixing turbulence unit further comprises a plurality of concave annular bodies and convex annular bodies arranged in parallel on the circumferential surface of the hollow cylindrical body, and at least one flow channel outlet is provided on the convex annular body, which together with the main flow channel between the concave annular bodies constitutes the turbulence flow channel.

5. The two-phase flow uniform mixing device according to claim 4, characterized in that: A flow-interfering convex column is further arranged in the main body flow channel.

6. The two-phase flow uniform mixing device according to claim 5, characterized in that: The cross section of the spoiler convex column includes any one of a rectangle, an ellipse and a triangle.

7. The two-phase flow uniform mixing device according to claim 1, characterized in that: The flow guide sleeve and the flow guide body are an integrated structure.

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