Slurry conveying assembly and slurry conveying system

Abstract

The utility model discloses a slurry conveying assembly and a slurry conveying system. The slurry conveying assembly comprises a conveying pipeline, the conveying pipeline is provided with a channel used for flowing of slurry, the side wall of the conveying pipeline is provided with a resistance reduction liquid injection port, the resistance reduction liquid injection port is communicated with the channel, and the resistance reduction liquid injection port is used for injecting resistance reduction liquid at least into the position between the inner wall face of the conveying pipeline and the slurry. By means of the slurry conveying assembly, energy loss of slurry in the conveying process can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry conveying, in particular to a slurry conveying component and a slurry conveying system. Background Art

[0002] Slurry transportation usually refers to a method of transporting solid materials using pipelines. Slurry transportation using pipelines has a wide range of applications, including coal slurry transportation, ore slurry transportation, silt transportation, and seabed manganese nodule lifting.

[0003] The slurry in the pipeline is a mixture of solid matter and water. When the slurry moves through the pipeline, it will generate large friction between the pipe wall and cause energy loss, especially in the case of long pipelines. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one purpose of the present invention is to provide a slurry conveying assembly that can reduce energy loss during slurry conveying.

[0005] According to the first aspect of the present invention, the slurry conveying assembly includes a conveying pipe, the conveying pipe having a channel for slurry flow, the side wall of the conveying pipe having a drag reducing liquid injection port, the drag reducing liquid injection port being connected to the channel, and the drag reducing liquid injection port being used to inject drag reducing liquid at least into the space between the inner wall surface of the conveying pipe and the slurry.

[0006] According to the slurry conveying assembly of the embodiment of the present invention, a drag-reducing liquid injection port is provided on the side wall of the conveying pipe, and the drag-reducing liquid injection port is connected to the channel. The drag-reducing liquid can be injected at least into the space between the inner wall surface of the conveying pipe and the slurry through the drag-reducing liquid injection port, thereby lubricating and reducing the drag of the interface between the slurry in the channel and the inner wall surface of the conveying pipe, reducing the friction between the slurry and the inner wall surface of the conveying pipe when it flows, reducing the flow loss of the slurry during the conveying process, and achieving an energy-saving effect.

[0007] In some embodiments, the drag reducing fluid is a polymer solution, a surfactant solution, or grease.

[0008] In some embodiments, a plurality of the drag reducing liquid injection ports are provided at intervals along the circumference of the delivery pipe.

[0009] In some embodiments, in the vertical direction, the drag reducing liquid injection port is distributed at the upper part of the conveying pipeline.

[0010] In some embodiments, the plurality of drag reducing liquid injection ports spaced apart along the circumference of the delivery pipe are symmetrically distributed with respect to a vertical line intersecting a center line of the delivery pipe.

[0011] In some embodiments, a plurality of the drag reducing liquid injection ports are provided at intervals in the conveying direction of the channel.

[0012] In some embodiments, the slurry conveying assembly further includes a pressurizing assembly, which is communicated with the drag reducing liquid injection port and drives the drag reducing liquid at the drag reducing liquid injection port to flow into the channel.

[0013] In some embodiments, one pressurizing assembly is provided corresponding to a plurality of the drag reducing liquid injection ports; or, a plurality of pressurizing assemblies are provided in a one-to-one correspondence with a plurality of the drag reducing liquid injection ports.

[0014] In some embodiments, the slurry conveying assembly further includes an injection pipe, which passes through the pipe wall of the conveying pipe and defines the drag reducing liquid injection port, and the inner end face of the injection pipe is coplanar with the inner wall surface of the conveying pipe or is located radially outside the inner wall surface of the conveying pipe.

[0015] The second aspect of the present invention further provides a slurry conveying system.

[0016] The slurry conveying system according to an embodiment of the second aspect of the present invention includes a slurry conveying assembly according to any one embodiment of the first aspect of the present invention.

[0017] Compared with the prior art, the advantages of the slurry conveying system of the present invention are the same as those of the slurry conveying assembly of the embodiment of the present invention, which will not be described in detail here.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is a structural diagram of a slurry conveying assembly according to an embodiment of the present invention;

[0021] Figure 2 This is a structural schematic diagram of a slurry conveying assembly according to another embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of a slurry conveying assembly according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of a slurry conveying assembly according to another embodiment of the present invention.

[0024] Reference numerals:

[0025] Slurry delivery assembly 100;

[0026] Conveying pipeline 10; channel 101; drag reducing liquid injection port 102; inner wall surface 103 of conveying pipeline 10;

[0027] Slurry 20; drag reducing fluid 30; vertical line S intersecting the center line of the delivery pipeline 10; injection pipe 40;

[0028] Inner end surface 401 of injection tube 40 ; pressurizing assembly 50 . DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs; the terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the terms "including" and "having" and any variations thereof in the specification and claims of this utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0032] In this application, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0033] In the embodiments of the present invention, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of the present invention, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are for illustrative purposes only and do not constitute any limitation on the present invention.

[0034] The term "plurality" used in this invention refers to more than two (including two).

[0035] The following combination Figures 1 to 4 The slurry conveying assembly 100 and the slurry conveying system of the present invention are described below.

[0036] like Figures 1 to 4 As shown, the slurry conveying assembly 100 according to the embodiment of the first aspect of the present invention includes a conveying pipe 10, the conveying pipe 10 has a channel 101 for the flow of slurry 20, and the side wall of the conveying pipe 10 has a drag reducing liquid injection port 102, the drag reducing liquid injection port 102 is connected to the channel 101, and the drag reducing liquid injection port 102 is used to inject the drag reducing liquid 30 at least between the inner wall surface 103 of the conveying pipe 10 and the slurry 20.

[0037] The conveying pipeline 10 has a channel 101 for the flow of slurry 20, wherein the conveying pipeline 10 can be a sludge conveying pipeline for conveying sludge, and its channel 101 has a shorter extension length; or, the conveying pipeline 10 can also be a coal conveying pipeline for conveying coal or a slurry pipeline for conveying slurry, and its channel 101 has a longer extension length.

[0038] The drag reducing liquid injection port 102 can be connected to an external drag reducing liquid 30 storage tank. When the slurry 20 is continuously injected into the conveying pipeline 10, the drag reducing liquid injection port 102 can continuously inject the drag reducing liquid 30 into the channel 101. In other embodiments, the drag reducing liquid injection port 102 can be used to intermittently inject the drag reducing liquid 30 into the channel 101.

[0039] It should be noted that the injection pressure at the drag reducing liquid injection port 102 should be slightly greater than the internal pressure of the channel 101, so that the drag reducing liquid 30 can be injected into the channel 101. At the same time, it is not easy to form a jet, which causes the drag reducing liquid 30 to be directly injected into the slurry 20. That is, the drag reducing liquid 30 can be injected as much as possible between the inner wall surface 103 of the conveying pipe 10 and the slurry 20 in the channel 101, so as to reduce the friction between the slurry 20 and the inner wall surface 103 of the conveying pipe 10 when it flows, and reduce the flow loss of the slurry 20 during the transportation process.

[0040] It should be noted that the viscosity of the drag reducing fluid 30 should be much smaller than that of the slurry 20. Therefore, the injected drag reducing fluid 30 can be less likely to mix with the slurry 20 within a longer distance and can be retained between the inner wall surface 103 of the conveying pipe 10 and the slurry 20 in the channel 101 to achieve the effect of lubrication and drag reduction.

[0041] According to the slurry conveying assembly 100 of the embodiment of the present invention, a drag reducing liquid injection port 102 is provided on the side wall of the conveying pipe 10, and the drag reducing liquid injection port 102 is communicated with the channel 101. The drag reducing liquid 30 can be injected at least into the space between the inner wall surface 103 of the conveying pipe 10 and the slurry 20 through the drag reducing liquid injection port 102, so that the interface between the slurry 20 in the channel 101 and the inner wall surface 103 of the conveying pipe 10 can be lubricated and drag-reduced, thereby reducing the friction between the slurry 20 and the inner wall surface 103 of the conveying pipe 10 when flowing, reducing the flow loss of the slurry 20 during the conveying process, and achieving an energy-saving effect.

[0042] According to some embodiments of the present invention, the drag-reducing fluid 30 may be a polymer solution, a surfactant solution, or grease. Using a polymer solution as the drag-reducing fluid 30 offers lower costs and more stable performance. Using a surfactant solution as the drag-reducing fluid 30 also offers lower costs. Using grease as the drag-reducing fluid 30 prevents the grease from mixing with the slurry 20, extending the duration of the drag-reducing lubrication of the slurry 20.

[0043] According to some embodiments of the present invention, reference can be made to Figure 3 and Figure 4 As shown, multiple drag-reducing liquid injection ports 102 are provided at intervals along the circumference of the conveying pipe 10. This allows the drag-reducing liquid 30 to be injected into multiple locations along the circumference of the conveying pipe 10 to lubricate the slurry 20 and the inner wall surface 103 of the conveying pipe 10 at multiple locations along the circumference, thereby facilitating improved drag-reducing effects of the drag-reducing liquid 30 on the flow of the slurry 20. For example, two, three, four, five, or other drag-reducing liquid injection ports 102 may be provided at intervals along the circumference of the conveying pipe 10.

[0044] According to some embodiments of the present invention, reference can be made to Figure 3 and Figure 4 As shown, in the vertical direction, the drag reducing liquid injection port 102 is distributed at the upper part of the conveying pipeline 10 .

[0045] It should be noted that the drag-reducing liquid 30 injected into the injection channel 101 can partially flow downward under the action of gravity. Therefore, the drag-reducing liquid injection port 102 can be provided only at the upper portion of the conveying pipe 10. For the slurry 20 in the upper portion of the conveying pipe 10, the drag-reducing liquid 30 injected from the drag-reducing liquid injection port 102 can directly lubricate the interface between the slurry 20 and the inner wall surface 103 of the conveying pipe 10. For the slurry 20 in the lower portion of the conveying pipe 10, the drag-reducing liquid 30 injected from the drag-reducing liquid injection port 102 can flow from the upper portion to the lower portion of the conveying pipe 10 under the action of gravity, thereby reducing drag and lubricating the interface between the slurry 20 in the lower portion of the conveying pipe 10 and the inner wall surface 103 of the conveying pipe 10. This helps to reduce the number of drag-reducing liquid injection ports 102 provided.

[0046] For example, the upper portion of the conveying pipeline 10 may refer to a portion of the conveying pipeline 10 that is located above a horizontal plane passing through the central axis of the conveying pipeline 10 .

[0047] According to some embodiments of the present invention, a plurality of drag reducing liquid injection ports 102 spaced apart along the circumference of the delivery pipeline 10 are symmetrically distributed about a vertical line S intersecting the center line of the delivery pipeline 10 .

[0048] For example, reference may be made to Figure 3 and Figure 4 In the vertical direction, multiple drag reducing liquid injection ports 102 spaced apart along the circumference of the conveying pipeline 10 are distributed in the upper part of the conveying pipeline 10 , and the multiple drag reducing liquid injection ports 102 are symmetrically distributed about a vertical line S intersecting the center line of the conveying pipeline 10 .

[0049] In this way, the injected drag reducing fluid 30 can be evenly distributed around the circumference of the delivery pipe 10 as much as possible, which is beneficial for obtaining a better drag reducing and lubricating effect.

[0050] According to some embodiments of the present invention, reference can be made to Figure 1 and Figure 2 In the conveying direction of the channel 101, a plurality of drag reducing liquid injection ports 102 are provided at intervals.

[0051] It should be noted that the drag reducing liquid 30 injected into the channel 101 will flow along the conveying direction of the channel 101 as the slurry 20 flows, and will be mixed with the slurry 20 during the flow process, resulting in a reduction or disappearance of the drag reducing liquid 30 between the slurry 20 and the inner wall surface 103 of the conveying pipe 10. By arranging a plurality of drag reducing liquid injection ports 102 at intervals in the conveying direction of the channel 101, the drag reducing liquid 30 can be injected at multiple locations in the conveying direction of the channel 101 to replenish the drag reducing liquid 30 between the slurry 20 and the inner wall surface 103 of the conveying pipe 10, thereby alleviating the problem of poor drag reduction and lubrication effect after the slurry 20 flows over a long distance.

[0052] According to some embodiments of the present invention, reference can be made to Figure 1 and Figure 2 The slurry conveying assembly 100 further includes a pressurizing assembly 50, which is connected to the drag reducing liquid injection port 102 and drives the drag reducing liquid 30 at the drag reducing liquid injection port 102 to flow into the channel 101. For example, the pressurizing assembly 50 can be a pressurizing assembly connected to a pressurizing power source, or a pressurizing assembly connected to a drag reducing liquid storage tank.

[0053] The pressurizing component 50 for pressurizing the drag reducing liquid 30 at the drag reducing liquid injection port 102 can be directly connected to the drag reducing liquid storage tank to pressurize the drag reducing liquid storage tank so as to pressurize the drag reducing liquid 30 at the drag reducing liquid injection port 102; alternatively, the pressurizing component 50 can also be arranged on the pipeline connected between the drag reducing liquid storage tank and the drag reducing liquid injection port 102 to directly pressurize the drag reducing liquid injection port 102; thereby, the drag reducing liquid 30 can be at least partially injected into between the inner wall surface 103 of the conveying pipe 10 and the slurry 20.

[0054] According to some embodiments of the present invention, reference can be made to Figure 3 One pressurizing assembly 50 is provided corresponding to a plurality of drag reducing liquid injection ports 102 .

[0055] According to some embodiments of the present invention, reference can be made to Figure 4 The plurality of pressurizing components 50 are arranged in one-to-one correspondence with the plurality of drag reducing liquid injection ports 102 .

[0056] That is, one pressurizing assembly 50 can simultaneously pressurize multiple drag reducing liquid injection ports 102, thereby reducing the number of pressurizing assemblies 50 provided. The multiple drag reducing liquid injection ports 102 may include multiple drag reducing liquid injection ports 102 spaced apart along the circumference of the conveying pipe 10; or, the multiple drag reducing liquid injection ports 102 may include multiple drag reducing liquid injection ports 102 spaced apart in the conveying direction of the channel 101; or, the multiple drag reducing liquid injection ports 102 may include multiple drag reducing liquid injection ports 102 spaced apart along the circumference of the conveying pipe 10 and multiple drag reducing liquid injection ports 102 spaced apart in the conveying direction of the channel 101. When the conveying pipe 10 is short, such as a conveying pipe 10 used to convey sludge, one pressurizing assembly 50 can be used to pressurize multiple drag reducing liquid injection ports 102.

[0057] Alternatively, one pressurizing assembly 50 only pressurizes one drag reducing liquid injection port 102 , so that the pressurization level is more controllable.

[0058] According to some embodiments of the present invention, reference can be made to Figure 3As shown, the slurry conveying assembly 100 further includes an injection pipe 40 , which passes through the wall of the conveying pipe 10 and defines a drag reducing liquid injection port 102 . An inner end surface 401 of the injection pipe 40 is coplanar with an inner wall surface 103 of the conveying pipe 10 .

[0059] According to some embodiments of the present invention, Figure 4 As shown, the slurry conveying assembly 100 further includes an injection pipe 40 , which passes through the wall of the conveying pipe 10 and defines a drag reducing liquid injection port 102 . An inner end face 401 of the injection pipe 40 is located radially outside the inner wall surface 103 of the conveying pipe 10 .

[0060] The inner end face 401 of the injection pipe 40 is coplanar with the inner wall surface 103 of the conveying pipe 10 or is located radially outside the inner wall surface 103 of the conveying pipe 10. In this way, on the one hand, the inner end of the injection pipe 40 is not likely to affect the transportation of the slurry 20. On the other hand, it is beneficial for the drag reducing fluid 30 to be injected as much as possible between the slurry 20 and the inner wall surface 103 of the conveying pipe 10, and it is not easy to be injected directly into the slurry 20.

[0061] For example, the outer wall of the injection pipe 40 can be threaded or welded to the delivery pipe 10. For example, a seal can be provided between a portion of the outer wall of the injection pipe 40 and the delivery pipe 10 to achieve a better sealing effect and reduce the possibility of leakage of the slurry 20, the drag reducing fluid 30, etc.

[0062] The second aspect of the present invention further provides a slurry conveying system.

[0063] The slurry conveying system according to the embodiment of the second aspect of the present invention includes the slurry conveying assembly 100 according to any one of the embodiments of the first aspect of the present invention. Since the embodiment of the second aspect of the present application also includes the slurry conveying assembly 100 according to any one of the embodiments of the first aspect of the present invention, the slurry conveying system of the second aspect of the present application has at least the following advantages: by providing a drag reducing liquid injection port 102 on the side wall of the conveying pipe 10, and the drag reducing liquid injection port 102 is connected to the channel 101, the drag reducing liquid 30 can be injected into at least the inner wall surface 103 of the conveying pipe 10 and the slurry 20 through the drag reducing liquid injection port 102, so that the interface between the slurry 20 in the channel 101 and the inner wall surface 103 of the conveying pipe 10 can be lubricated and drag-reduced, thereby reducing the friction between the slurry 20 and the inner wall surface 103 of the conveying pipe 10 when flowing, reducing the flow loss of the slurry 20 during the conveying process, and achieving the effect of energy saving.

[0064] In some embodiments, the slurry conveying system may also include one or more of raw material processing equipment, slurry preparation equipment, slurry storage equipment, slurry conveying equipment and a control system. The raw material processing equipment is used to perform physical or chemical treatment on the raw material to remove impurities, adjust the particle size or change the properties of the raw material. The raw material processing equipment may include a screening machine, a crusher, a pulping machine, etc. The slurry preparation equipment is used to mix the raw material with water to form a slurry. The slurry preparation equipment may include a mixer, a blender, etc. The slurry storage equipment is used to store the prepared slurry for subsequent use. The slurry storage equipment may include a slurry pool, a slurry tank, etc. The slurry conveying equipment is used to provide power for the conveying of the slurry. The slurry conveying equipment may include a screw conveyor, etc. The control system is used to automatically control the entire slurry conveying process. The control system includes sensors, computer control systems, PLCs (Programmable Logic Controllers), etc.

[0065] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A slurry conveying component, characterized in that: The invention comprises a conveying pipe (10) and an injection pipe (40), wherein the conveying pipe (10) has a channel (101) for the slurry (20) to flow, and a drag reducing liquid injection port (102) is provided on a side wall of the conveying pipe (10), wherein the drag reducing liquid injection port (102) is communicated with the channel (101), and the drag reducing liquid injection port (102) is used to inject the drag reducing liquid (30) at least into a space between an inner wall surface (103) of the conveying pipe (10) and the slurry (20); The injection pipe (40) is arranged through the wall of the delivery pipe (10) and defines the drag reducing liquid injection port (102); the inner end surface (401) of the injection pipe (40) is coplanar with the inner wall surface (103) of the delivery pipe (10) or is located radially outside the inner wall surface (103) of the delivery pipe (10).

2. The slurry conveying assembly according to claim 1, characterized in that: The drag reducing fluid (30) is a polymer solution, a surfactant solution or grease.

3. The slurry conveying assembly according to claim 1, characterized in that: A plurality of the drag reducing liquid injection ports (102) are provided at intervals along the circumference of the delivery pipe (10).

4. The slurry conveying assembly according to claim 1, characterized in that: In the vertical direction, the drag reducing liquid injection port (102) is distributed at the upper part of the conveying pipeline (10).

5. The slurry conveying assembly according to claim 3, characterized in that: The plurality of drag reducing liquid injection ports (102) spaced apart along the circumference of the delivery pipe (10) are symmetrically distributed about a vertical line (S) intersecting the center line of the delivery pipe (10).

6. The slurry conveying assembly according to claim 1, characterized in that: In the conveying direction of the channel (101), a plurality of the drag reducing liquid injection ports (102) are arranged at intervals.

7. The slurry conveying assembly according to claim 1, characterized in that: It also includes a pressurizing component (50), which is in communication with the drag reducing liquid injection port (102) and drives the drag reducing liquid (30) at the drag reducing liquid injection port (102) to flow into the channel (101).

8. The slurry conveying assembly according to claim 7, characterized in that: One pressurizing assembly (50) is provided corresponding to a plurality of the drag reducing liquid injection ports (102); or, a plurality of pressurizing assemblies (50) are provided in a one-to-one correspondence with a plurality of the drag reducing liquid injection ports (102).

9. A slurry conveying system, characterized in that: The invention comprises a slurry conveying assembly (100) according to any one of claims 1 to 8.

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