CN216868200U

CN216868200U - Multi-pump confluence large-flow long-distance conveying system

Info

Publication number: CN216868200U
Application number: CN202220369807.2U
Authority: CN
Inventors: 吴学民
Original assignee: Beijing Jinchengxin Mine Technology Institute Co ltd
Current assignee: Beijing Jinchengxin Mine Technology Institute Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-01
Anticipated expiration: 2032-02-23

Abstract

The utility model relates to the technical field of fluid conveying, in particular to a multi-pump confluence large-flow long-distance conveying system. The multi-pump confluence large-flow long-distance conveying system comprises at least two slurry pumps and a main conveying pipeline, wherein the discharge ends of the at least two slurry pumps are respectively connected through an outlet pipeline and communicated with one end of the main conveying pipeline, one end of the outlet pipeline, which is close to the slurry pumps, is provided with a flow stabilizer, and the outlet pipeline is also provided with a check valve. The advantages are that: the outlet branch pipelines of at least two sets of pumping systems can be converged in one main filling pipeline, and meanwhile, the pulse vibration of the pumping systems is effectively reduced and transmitted to the main filling pipeline.

Description

Multi-pump confluence large-flow long-distance conveying system

Technical Field

The utility model relates to the technical field of fluid conveying, in particular to a multi-pump confluence large-flow long-distance conveying system.

Background

In the engineering field of mines and the like, the application of slurry pipeline transportation to transfer materials such as pulverized coal slurry, concentrate slurry, tailing slurry, filling slurry and the like instead of the traditional vehicle-mounted transportation mode is more and more extensive, and the transfer mode has the outstanding characteristics of high efficiency, no environmental pollution, low transfer cost and the like.

Because long-distance pipeline transportation has the characteristics of large flow and long distance, the configured transportation pump can meet the transportation of large flow and can generate higher transportation pressure to overcome the high on-way resistance generated in long distance.

Although the slurry pump in the prior art can meet the requirement of large-flow conveying, the lift is lower; the construction of the multi-stage relay pump station is high in construction cost and difficult to maintain; although the multi-stage slurry pump can generate higher conveying pressure, the pump type volume efficiency only reaches 50% -60%, so that the conveying power consumption is large, and the engineering requirement of large-flow pipeline long-technology conveying is difficult to meet.

The displacement type pump can generate larger conveying pressure and has the volumetric efficiency of more than 95 percent, is ideal, but is limited by the manufacturing technology of the displacement pump, and the discharge capacity of the monomer slurry pump only reaches 150m³The requirement of large-flow pipeline transportation cannot be met; the volume type pump realizes material feeding and discharging by the volume change of the pump cavity, and the structural characteristics of the volume type pump determine that larger fluid pulsation impact can be generated in the working process, so that the reliability and the safety of pipeline connection are greatly influenced.

Although the requirement of large-flow pipeline conveying can be met by a plurality of sets of volume type pump type conveying pumps corresponding to a plurality of conveying pipelines, the pipeline laying cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a multi-pump confluence large-flow long-distance conveying system, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a large-traffic long distance transport system of many pumps confluence, includes two at least slurry pumps and main conveying line, and the discharge end of two at least above-mentioned slurry pumps is respectively through outlet pipe connection and the one end that feeds through above-mentioned main conveying line, and the one end that is close to above-mentioned slurry pump on the above-mentioned outlet pipeline is equipped with the current stabilizer, still is equipped with the check valve on the above-mentioned outlet pipeline.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, one end of the main conveying pipeline is connected and communicated with a multi-way element, the multi-way element is provided with a discharge interface and a plurality of feeding interfaces which are intersected and communicated with the discharge interface, the discharge interface of the multi-way element is connected and communicated with one end of the main conveying pipeline, and the feeding interfaces of the multi-way element are respectively connected and communicated with the ports of the outlet pipelines of the at least two slurry pumps in a one-to-one correspondence manner.

Furthermore, the drift diameter of the discharge interface of the multi-pass element is larger than the sum of the drift diameters of the plurality of feed interfaces.

Furthermore, the slurry pump is provided with two slurry pumps, and the corresponding multi-way element is a three-way element. And the tee joint element is a Y-shaped tee joint.

Further, the slurry pump is a positive displacement pump.

The beneficial effects of the utility model are: the outlet branch pipelines of at least two sets of pumping systems converge in one main filling pipeline, and the pulse vibration of the pumping systems is effectively reduced and transmitted to the main filling pipeline.

Drawings

FIG. 1 is a schematic structural diagram of a multi-pump interflow large flow long distance delivery system of the present invention;

FIG. 2 is a schematic structural diagram of a flow stabilizer in the multi-pump confluence large-flow long-distance conveying system of the present invention;

fig. 3 is a schematic structural diagram of a check valve in the multi-pump confluence large-flow long-distance conveying system of the utility model.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a slurry pump; 2. a main conveying line; 3. an outlet line; 4. a current stabilizer; 5. a check valve; 6. a manifold element.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Example (b): as shown in fig. 1 to 3, the multi-pump confluence large-flow long-distance conveying system of the present embodiment includes at least two slurry pumps 1 and a main conveying pipeline 2, wherein discharge ends of at least two slurry pumps 1 are respectively connected and communicated with one end of the main conveying pipeline 2 through an outlet pipeline 3, a flow stabilizer 4 is disposed at one end of the outlet pipeline 3 close to the slurry pumps 1, and a check valve 5 is further disposed on the outlet pipeline 3.

In the use process, when the material sucking and discharging piston of any one slurry pump 1 is reversed instantly without generating pressure, the check valve 5 is arranged to effectively prevent the material from flowing to the pump in the reverse direction, so that the material flow is ensured to always flow to the main conveying pipeline 2, meanwhile, the flow stabilizer 4 is arranged in the system to effectively stabilize the fluid pulsation, slow down and eliminate the influence of the pulsation impact on a pipeline connecting piece, and slow down the impact abrasion of the pulsating fluid on the inner wall of the pipeline, in conclusion, in the embodiment, by the technical measures, the method can realize the stabilization and elimination of the pulsation impact specific to a volume type pump, ensure the safety and reliability of pipeline connection, reduce the impact abrasion of the pulsation impact on the inner wall of the pipeline, and solve the problem of the reverse material flow generated by the other slurry pump 1 to the outlet pipeline of the first slurry pump 1 when any one slurry pump 1 is reversed, the material flow is ensured to flow towards the main conveying pipeline 2.

It should be added that: in this embodiment, the connection between each interface and the pipeline may be implemented by using a high-pressure quick-change clamp, or by using a flange of a corresponding pressure level, and the pipeline connection belongs to the existing well-known mature technology, and is not described in detail herein.

In a preferred embodiment, one end of the main conveying pipeline 2 is connected and communicated with a multi-way element 6, the multi-way element 6 is provided with a discharge port and a plurality of feeding ports which are communicated with the discharge port in an intersecting manner, the discharge port of the multi-way element 6 is connected and communicated with one end of the main conveying pipeline 2, and the feeding ports of the multi-way element are respectively connected and communicated with the ports of the outlet pipelines 3 of at least two slurry pumps 1 in a one-to-one correspondence manner.

In the above embodiment, the closed confluence pipeline is formed between the multi-way element 6 and the outlet pipeline 3 and the main conveying pipeline 2, so that the normal conveying can be ensured.

More preferably, the diameter of the discharge port of the multi-way element 6 is larger than the sum of the diameters of the plurality of feeding ports, specifically, the inner cavities of the feeding port and the discharge port of the multi-way element 6 are regular circular tubes, and the diameter means the inner diameter.

In the scheme, through reasonable design of the flow area of the inner interface of the multi-pass element 6, the slurry can not generate fluid resistance and material retardation on the fluid caused by the change of the pipe diameter when the multi-pass element 6 flows through.

In this embodiment, two slurry pumps 1 are provided, and the corresponding multi-way element 6 is a tee element, and the tee element is a Y-tee.

In the scheme, the design of the Y-shaped tee enables slurry to flow smoothly when flowing through the tee element and the resistance is small.

In this embodiment, above-mentioned slurry pump 1 adopts the volume class pump body (can adopt prior art's piston pump or plunger pump, and the reasonable selection of specific model according to the in-service use demand), and the benefit lies in: firstly, can produce higher delivery pressure, secondly the volume type pump type has higher volumetric efficiency, can effectively reduce and carry the consumption.

In this embodiment, the current stabilizer 4 may be an existing product in the market, or may be an assembly having the following structural form:

the current stabilizer 4 comprises a body 40, an elastic damping element 41, a transparent cover 44, a guide post 43, a guide ring 44, a sealing ring 45, a floating piston 46 and a connector 47, wherein the body 40 is hollow and has openings at two ends, the transparent cover 44 is coaxially arranged at the opening at one end of the body 40, the connector 47 is coaxially arranged at the opening at the other end of the body (the connector is provided with a flow channel and communicated with the outlet pipeline 3), a circular groove is arranged on the outer shaft of the floating piston 46, the coaxial guide ring 44 and the sealing ring 45 are also arranged in the circular groove and are in sliding fit with the inner wall of the body 40, one end of the guide post 43 is connected with one end of the floating piston 46, the other end of the guide post 43 penetrates through a through hole of the transparent cover 44 and is connected with the transparent cover 44, the elastic damping element 41 is sleeved on the guide post 43 and can slide along the axial direction of the guide post, and two ends of the elastic damping element 41 are respectively abutted against the floating piston 46 and the transparent cover 44.

Specifically, the elastic damping element 41 may be a helical compression spring, a disc spring, or a combination (stacked combination in the axial direction) of a helical compression spring and a plurality of sets of disc springs.

The current stabilizer 4 adopts a spring as a damping element to replace the traditional technology that gas isolated by a capsule or a diaphragm is used as damping, and has the characteristics of simple structure, low manufacturing cost, large energy storage capacity, wide range of adaptive fluid flow and pressure threshold, high reliability and stability, easy maintenance and the like.

In this embodiment, the check valve 5 may be a commercially available product, or may be a structural member having a structural form as follows:

the check valve 5 includes a valve body 51, a valve ball 52, a seal ring 53, and a sleeve valve seat 54, wherein the valve ball 52 is disposed in an inner cavity of the valve body 51, the sleeve valve seat 54 is embedded in a feed port (one end port) of the valve body 51, and the seal ring 53 is embedded in a seal groove of the valve body 51 and is sleeved on an outer periphery of the sleeve valve seat 54 to form a seal. A plurality of rib plates distributed at intervals along the circumferential direction of the valve body 51 are arranged in the valve body 51 (each rib plate extends along the axial direction of the valve body 51), the rib plates are flat sections at the inlet end part of the valve body 51 so as to provide guidance for the movement of the valve ball 52, and a convex structure protruding towards the center of the valve body 51 is arranged at the outlet end part of the valve body 51 so as to form a blocking effect on the valve ball 52. The valve ball 52 is placed in a space formed by the flat rib of the valve body 51 through the inlet port of the valve body 51. After the valve ball 52 is placed in the valve body 51, the sealing ring 53 is placed in the sealing groove at the inlet end of the valve body 51, and then the sleeve valve seat 54 is installed, thereby completing the assembly of the check valve 5 of the present invention. When fluid enters from the inlet port of the valve body 51, the fluid pushes the valve ball 52 to the rib plate raised structure part at the outlet port of the valve body 51 to form a circulation space, so that the fluid can smoothly pass through the circulation space; when the fluid flows back, the fluid pushes the valve ball 52 into contact with the sleeve valve seat 54 to form a seal, which prevents the reverse flow of the fluid.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a big flow-rate long distance conveying system of multi-pump confluence which characterized in that: including two at least slurry pumps (1) and main conveying pipeline (2), at least two the discharge end of slurry pump (1) is connected and is communicate through outlet pipe way (3) respectively the one end of main conveying pipeline (2), be close to on outlet pipe way (3) the one end of slurry pump (1) is equipped with current stabilizer (4), still be equipped with check valve (5) on outlet pipe way (3).

2. The multi-pump interflow high flow long distance delivery system of claim 1, wherein: one end of the main conveying pipeline (2) is connected and communicated with a multi-way element (6), the multi-way element (6) is provided with a discharge interface and a plurality of feeding interfaces communicated with the discharge interface in an intersection manner, the discharge interface of the multi-way element (6) is connected and communicated with one end of the main conveying pipeline (2), and the feeding interfaces of the multi-way element are respectively connected and communicated with ports of outlet pipelines (3) of at least two slurry pumps (1) in a one-to-one correspondence manner.

3. A multi-pump, merge, high-flow, long-haul delivery system as recited in claim 2, further comprising: the drift diameter of the discharge interface of the multi-pass element (6) is larger than the sum of the drift diameters of the plurality of feed interfaces.

4. A multi-pump, merge, high-flow, long-haul delivery system according to claim 3, wherein: the slurry pump (1) is provided with two, the corresponding multi-way element (6) is a three-way element, and the three-way element is a Y-shaped three-way.

5. A multi-pump, combined flow, high flow, long haul delivery system according to any one of claims 1 to 4, wherein: the slurry pump (1) is a positive displacement pump.