Divided-flow type plume restraining device for deep-sea mining tail water discharge
By using a split-flow plume suppression device, which forms an orderly jet through a three-way pipe and a guide cylindrical pipe, the problem of plume diffusion in deep-sea mining tailwater discharge is solved, achieving an effective balance between environmental protection and resource utilization.
Patent Information
- Application Number
- CN202511702673.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-02-03
AI Technical Summary
Existing technologies lack efficient devices specifically designed for deep-sea mining tailwater discharge, which cannot effectively reduce the incident flow velocity to suppress the spread of plumes, resulting in a serious threat to the deep-sea environment.
The feather flow suppression device with a split design includes a three-way inlet and two inclined outlet pipes. It forms an orderly jet through a guide cylindrical pipe and a fixed support, and uses the space inside the pipe to reduce turbulence, lower the flow velocity and reduce diffusion.
Without affecting emission efficiency, it significantly reduces the diffusion volume and range of plumes, protecting the deep-sea environment and reducing the impact on the ocean.
Smart Images
Figure CN121452430A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of ocean engineering, in particular, especially relates to a split-flow type plume suppression device for deep-sea mining tail water discharge. BACKGROUND
[0002] The plume generated by deep-sea mining tail water discharge will pose a serious threat to the deep-sea environment. Through simulation experiments, it is found that both the incident velocity and the incident concentration will affect the diffusion speed and diffusion range of the plume, but the influence of the incident velocity is much greater than that of the incident concentration. Therefore, how to effectively control and significantly reduce the initial speed of tail water discharge has become a key breakthrough to curb the excessive diffusion of the plume and reduce the impact on the deep-sea environment. However, the existing discharge technology is insufficient in the research on the structure optimization scheme for targeted suppression of the initial speed, and lacks a high-efficiency discharge port device specially designed for deep-sea discharge characteristics, which can effectively reduce the incident flow rate and thus limit the diffusion of the plume. Therefore, a split-flow type plume suppression device for deep-sea mining tail water discharge is urgently needed to be developed. SUMMARY
[0003] In view of the above-mentioned technical problems existing in the prior art, a split-flow type plume suppression device for deep-sea mining tail water discharge is provided, which can fully utilize the space inside the pipe, reduce the diffusion volume and range of the plume generated by the tail water, and reduce the impact of deep-sea mining on the deep-sea environment without reducing the discharge efficiency, aiming to seek a balance between resource development and environmental protection.
[0004] The technical means adopted by the present application are as follows: A split-flow type plume suppression device for deep-sea mining tail water discharge comprises a suppression device housing, the suppression device housing comprises one three-way inlet pipe and two outlet pipes, one passage of the inlet pipe serves as a device inlet, and the other two passages are respectively connected to one of the outlet pipes; the outlet pipes are inclined inward; a bolt assembly for connecting a tail water discharge pipeline is installed at the opening of the passage of the inlet pipe serving as the device inlet; a fixed support is fixedly installed at the outlet of the outlet pipe, the fixed support is provided with a plurality of axial installation holes, and a flow guide cylindrical pipe is fixedly installed in each axial installation hole.
[0005] Further, an internal thread is arranged at the front end of the passage of the inlet pipe serving as the device inlet, which is matched with an external thread of the tail water discharge pipeline to connect the inlet pipe with the tail water discharge pipeline; the inlet pipe and the tail water discharge pipeline are fixed by the bolt assembly, and the bolt assembly adopts a pipe clamp.
[0006] Further, the outlet pipes are inclined inward at an angle of 10°.
[0007] Further, a sealing ring is installed in the passage serving as the device inlet of the inlet pipeline, and when the tail water discharge pipeline is connected to the passage serving as the device inlet of the inlet pipeline, the sealing ring is used to seal the tail water discharge pipeline and the passage.
[0008] Further, the sealing ring is made of rubber.
[0009] Further, a plurality of axial mounting holes are equidistantly arranged in the fixing support, so that the spacing of the flow guide cylindrical pipes is equal.
[0010] Compared with the prior art, the present application has the following advantages: 1. The pinnate flow suppression device for tail water discharge of deep-sea mining provided by the present application can orderly divide the tail water when the deep-sea mining discharge pipeline is working, without affecting the discharge efficiency. Under the action of the outlet pipeline angle, two opposite orderly jets are formed at the outlet, the two jets collide with each other to reduce the energy of the tail water, and finally a stable jet is formed to diffuse downward.
[0011] 2. The pinnate flow suppression device for tail water discharge of deep-sea mining provided by the present application can effectively reduce the diffusion of pinnate flow when the tail water flows through the suppression device under the premise of setting parameters through simulation experiment simulation, the diffusion volume of pinnate flow particles is 84.1% of that without the suppression device, and the cross-sectional diffusion area is 89.4% of that without the suppression device. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0013] Figure 1 is a structural schematic diagram of the pinnate flow suppression device.
[0014] Figure 2 is a structural cross-sectional view of the pinnate flow suppression device.
[0015] Figure 3 is a front structural schematic diagram of the pinnate flow suppression device.
[0016] Figure 4 is a top structural schematic diagram of the pinnate flow suppression device.
[0017] Figure 5 is a schematic diagram of the flow guide cylindrical pipe structure in the plume flow suppression device.
[0018] Figure 6 is a simulation comparison diagram of the plume flow particle diffusion distance before and after installing the plume flow suppression device.
[0019] Figure 7 is a simulation comparison diagram of the plume flow particle diffusion speed before and after installing the plume flow suppression device.
[0020] In the figure: 1, bolt assembly; 2, suppression device shell; 3, sealing ring; 4, flow guide cylindrical pipe; 5, fixed support. DETAILED DESCRIPTION
[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0023] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.
[0024] The foregoing description, for purposes of clarity, describes the present application in terms of its components, processes and operations. Such descriptions and representations are the means used by those skilled in the art of describing the physical structure, configuration, and operation of implementations of the present application. However, the application is not limited to the descriptions and representations. Although the foregoing embodiments have been described in some detail for purposes of clarity of understanding, it will be apparent that certain changes and modifications can be practiced within the scope of the appended claims. Accordingly, the present embodiments are to be considered as illustrative and not restrictive, and the present application is not to be limited to the details given herein, but can be modified within the scope and range of equivalents of the appended claims. In the claims, means-plus-function clauses, if used, are intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Thus although different goods or methods can not be patentably equivalent to one another, they can be within the equivalent structure for activities recited in the means-plus-function clauses.
[0025] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientations or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the outline of each component itself.
[0026] For the convenience of description, spatial relative terms such as "above", "upper", "on", "top", "bottom", etc. can be used herein to describe the spatial relationship of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.
[0027] In addition, it should be noted that the use of the words "first", "second", and the like, to describe various components, is merely intended to distinguish that particular component from another, and does not necessarily imply that the components are to be understood as having a particular order, unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.
[0028] Example 1 AsFigures 1-5 As shown, the present application provides a kind of plume suppression device for split-flow deep-sea mining tail water discharge, including the suppression device shell 2, the suppression device shell 2 includes one three-way inlet pipeline and two outlet pipelines, one passage of the inlet pipeline is used as device inlet, and the other two passages are connected to one of the outlet pipelines respectively;The outlet pipeline is inclined to the inside (i.e. the axis of the passage of the inlet pipeline as device inlet), so that the two fluids flowing out of the outlet pipeline can collide in advance, reduce the momentum flux of fluid, make the two fluids combine into one fluid in advance and propagate downward, to reduce the effect of plume diffusion;The passage opening of the inlet pipeline as device inlet is provided with bolt assembly 1 for connecting tail water discharge pipeline;The outlet of the outlet pipeline is fixedly installed with fixed support 5, the fixed support 5 is provided with a plurality of axial mounting holes, and each axial mounting hole is fixedly installed with flow guide cylindrical pipe 4, by installing a plurality of flow guide cylindrical pipes 4 in the outlet pipeline, the split-flow fluid can be ordered, and the outlet fluid velocity is reduced without reducing the discharge efficiency;The flow guide cylindrical pipe 4 is connected with the suppression device shell 2 through the fixed support 5, and the fixed support 5 supports the flow guide cylindrical pipe 4, so that the flow guide cylindrical pipe 4 maintains structural stability.
[0029] The plume suppression device can effectively reduce the diffusion volume and cross-sectional diffusion area of the tail water discharge plume, and reduce its impact on the deep-sea environment.
[0030] Further, the front end of the passage of the inlet pipeline as device inlet is provided with internal threads, which is matched with the external threads of the tail water discharge pipeline to connect the inlet pipeline with the tail water discharge pipeline;The inlet pipeline and the tail water discharge pipeline are fixed by the bolt assembly 1, and the bolt assembly 1 adopts pipe clamp.
[0031] Further, the outlet pipeline is inclined to the inside at an angle of 10°.
[0032] Further, a sealing ring 3 is installed in the passage of the inlet pipeline as device inlet, and when the tail water discharge pipeline is connected with the passage of the inlet pipeline as device inlet, the sealing ring 3 is installed in the passage of the inlet pipeline as device inlet to seal the tail water discharge pipeline and the passage.
[0033] Further, the sealing ring 3 is made of rubber.
[0034] Further, a plurality of axial mounting holes are arranged at equal intervals in the fixed support 5, so that the spacing of each flow guide cylindrical pipe 4 is equal.
[0035] Further, the shell 2 of the suppression device, the flow guide cylinder 4 and the fixing support are all made of high-strength metal material, so that they can normally work in the service environment.
[0036] In use, the tail water discharge pipeline is connected to the device inlet of the inlet pipeline, and the tail water discharged from the tail water discharge pipeline flows into the device inlet on the inlet pipeline. Due to the unique shape structure of the shell 2 of the suppression device, the fluid is divided, and under the premise of not affecting the discharge efficiency, the divided fluid is arranged in order through the flow guide cylinder 4, so that the irregular turbulent flow is reduced, the space in the pipeline is fully utilized, the vibration of the pipeline is further reduced, and the flow guide cylinder 4 can be effectively stabilized through the fixing support 5.
[0037] The following simulation comparison chart of the particle diffusion distance and diffusion speed of the plume before and after the plume suppression device of the present application is installed verifies the effect of the above embodiment: Figure 6 The simulation results of the simulation software starccm+ are as follows: the water discharge speed of the water discharge pipeline is 0.707 m / s, the incident concentration is 20 g / l, and the discharge height is 0.5 m from the seabed. By comparing the diffusion of the plume particles before and after the suppression device of the present application is installed, it can be seen that the particle diffusion port with the suppression device generates two opposite jets, forms an elongated diffusion area at the front end of the diffusion, and the diffusion volume is relatively reduced. In the middle of the diffusion, the cross-sectional diffusion area is also reduced. After hitting the bottom, the diffusion area diffuses along the radial direction of the bottom. The diffusion distance of the suppression device of the present application is obviously reduced compared with that without the suppression device, which proves the feasibility of the suppression device of the present application.
[0038] Figure 7 The particle diffusion comparison chart of the monitoring point column with a height of 0.1 m at the bottom 0.1 m from the center of the discharge port is set for the suppression device of the present application without the suppression device and with the suppression device. As shown in the chart, on the basis of the suppression device of the present application, the horizontal peak diffusion speed of the particles at the bottom is obviously reduced, which will slow down the diffusion of the plume at the bottom to some extent, and thus it is proved that the suppression device of the present application has good effect in reducing the diffusion speed of the plume particles and suppressing the diffusion distance.
[0039] When the plume suppression device of the present application is used in the deep-sea mining water discharge pipeline, the tail water flows through the suppression device. Under the premise of setting parameters, the simulation experiment simulation shows that the diffusion volume of the plume particles is 84.1% of that without the suppression device, and the cross-sectional diffusion area is 89.4% of that without the suppression device, so that the diffusion of the plume is effectively reduced.
[0040] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements 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 application.
Claims
1. A plume suppression device for diverted deep-sea mining tailings discharge, characterized in that, The device includes a housing for a suppression device, which comprises a three-way inlet pipe and two outlet pipes. One passage of the inlet pipe serves as the device inlet, and the other two passages are respectively connected to one of the outlet pipes. The outlet pipes are inclined inward. A bolt assembly for connecting to a tailwater discharge pipe is installed at the opening of the passage on the inlet pipe that serves as the device inlet. A fixing bracket is fixedly installed at the outlet of the outlet pipe. The fixing bracket is provided with several axial mounting holes, and a flow guide cylindrical pipe is fixedly installed in each of the axial mounting holes. Several flow guide cylindrical pipes are installed in the outlet pipe.
2. The plume suppression device for diverted deep-sea mining tailings discharge according to claim 1, characterized in that, The inlet pipe has an internal thread at the front end of the passage that serves as the device inlet, which is used to mate with the external thread of the tailwater discharge pipe to connect the inlet pipe to the tailwater discharge pipe; the inlet pipe is fixed to the outside of the tailwater discharge pipe by the bolt assembly, which uses a pipe clamp.
3. The plume suppression device for diverted deep-sea mining tailings discharge according to claim 1, characterized in that, The outlet pipeline is inclined inward at an angle of 10°.
4. The plume suppression device for diverted deep-sea mining tailings discharge according to claim 1, characterized in that, A sealing ring is installed in the passageway of the inlet pipe that serves as the device inlet. When the tailwater discharge pipe is connected to the passageway of the inlet pipe that serves as the device inlet, a sealing ring is installed in the passageway of the inlet pipe that serves as the device inlet to seal the tailwater discharge pipe and the passageway.
5. The plume suppression device for diverted deep-sea mining tailings discharge according to claim 1, characterized in that, The sealing ring is made of rubber.
6. The plume suppression device for diverted deep-sea mining tailings discharge according to claim 1, characterized in that, The fixed bracket has a plurality of axial mounting holes at equal intervals, so that the spacing between each of the flow guiding cylindrical tubes is equal.