CN114060034B - Vertical lift pump pipe system for deep sea mining - Google Patents
Vertical lift pump pipe system for deep sea mining Download PDFInfo
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- CN114060034B CN114060034B CN202111264471.XA CN202111264471A CN114060034B CN 114060034 B CN114060034 B CN 114060034B CN 202111264471 A CN202111264471 A CN 202111264471A CN 114060034 B CN114060034 B CN 114060034B
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- 238000005065 mining Methods 0.000 title claims abstract description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 24
- 239000011707 mineral Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000005514 two-phase flow Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a vertical lifting pump pipe system for deep sea mining, which adopts two centrifugal pumps as power units of each power node through brand new design of the integral structure of the lifting pump pipe system, the system consisting of the centrifugal pumps, pipelines and valves is symmetrically distributed on a horizontal plane, the vertical stress uniformity of the whole vertical pipeline system is ensured, and the smooth and non-blocking flow and the smooth backflow of the whole lifting system are ensured through the communication design of pump valve pipelines. The vertical lifting pump pipe system is vertically installed, double pumps run under the normal working condition, and the flow route of a system pipeline is changed by opening and closing the electromagnetic valve in the system under the fault working condition of the pump unit, so that the lifting system is ensured to be free from blocking. The invention has simple structure, meets the technical requirement of the lifting system, and ensures that the whole lifting system can still normally operate when the pump unit fails.
Description
Technical Field
The invention relates to the field of fluid machinery under deep sea mining conditions, in particular to a vertical lift pump pipe system for deep sea mining.
Background
Deep sea floors are rich in mineral resources, which have become international competitive focus, who owns the deep sea mining technology, and who occupies the "high spot" of ocean mineral resource development. The sea mining ship, the pulp pump hydraulic lifting system and the submarine crawler belt ore collector are taken as the current mining technical scheme in China, and the pulp pump hydraulic lifting system is taken as a main component and core technology in the mining system, so that the success probability of the mining system is determined to a great extent. Compared with advanced countries, the deep sea ore resource exploitation technology in China has a large gap, and the research and development process must be quickened.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a vertical lifting pump pipe system for deep sea mining, which takes a conveying unit as a power node, and the power node takes high efficiency, no blocking, large particle diameter trafficability and smooth backflow as design criteria and technical requirements. The invention mainly aims at the hydraulic lifting system of the pulp pump, the conveying unit is a power unit node in the long-distance mixed conveying lifting system, and the novel structural type of the power unit node of the lifting system is provided, so that the performance of the lifting system is ensured to meet the technical requirements, and the long-term stable operation of the whole lifting system is also ensured.
The vertical lifting pump pipe system for deep sea mining comprises a plurality of conveying units, wherein each conveying unit comprises a lifting pipe I, a bifurcation pipe I, an electromagnetic valve I, a mixing conveying pump I, a bracket I, an electromagnetic valve II, a bifurcation pipe II, a lifting pipe II, a bifurcation pipe III, an electromagnetic valve III, a bracket II, a mixing conveying pump II, a spiral connecting pipe, an electromagnetic valve IV, a bifurcation pipe IV, an electromagnetic valve V and a truss, the lifting pipe I and the lifting pipe II are connected and communicated through the electromagnetic valve V, and the other end of the lifting pipe I is connected with the other end of the lifting pipe II of the previous conveying unit; the first bifurcation pipe and the fourth bifurcation pipe are arranged on the first lifting pipe and communicated, and the second bifurcation pipe and the third bifurcation pipe are arranged on the second lifting pipe and communicated; the first mixing and conveying pump and the second mixing and conveying pump are connected in series through a spiral connecting pipe, two bifurcation ports are arranged on the spiral connecting pipe and are respectively connected with the second electromagnetic valve and the fourth electromagnetic valve, the outlet of the first mixing and conveying pump is connected to the bifurcation pipe through the first electromagnetic valve, and the third bifurcation pipe is connected to the inlet of the second mixing and conveying pump through the third electromagnetic valve; the first bracket and the second bracket are both arranged in the truss, the first mixing pump is arranged on the first bracket, and the second mixing pump is arranged on the second bracket; the lifting pipe I, the bifurcation pipe II, the lifting pipe II, the bifurcation pipe III and the bifurcation pipe IV are all arranged in the truss; the other end of the lifting pipe II is connected with the other end of the lifting pipe I of the next conveying unit or is inserted into a relay bin filled with deep sea mineral particles, and a deep sea mineral particle medium is conveyed through a mixing conveying pump I or/and a mixing conveying pump II, wherein the medium is a liquid-solid two-phase flow or a liquid-solid-gas three-phase flow; the deep sea mineral grain medium mode of different pipelines under multiple working conditions is realized by selectively controlling the actions of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve.
Further, the lift pump pipe system is vertically installed, the first mixing and conveying pump and the second mixing and conveying pump are power units of the conveying unit, the working mode of the conveying unit comprises a conventional working condition, under the conventional working condition, the first electromagnetic valve and the third electromagnetic valve are opened, the second electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are closed, and mineral multi-phase media in the second lift pipe sequentially pass through the third branch pipe, the third electromagnetic valve, the second mixing and conveying pump, the spiral connecting pipe, the first mixing and conveying pump and the first branch pipe and finally flow to the first lift pipe.
Further, the working mode of the conveying unit further comprises a pump unit fault working condition, when the mixed conveying pump fails, the electromagnetic valve III and the electromagnetic valve IV are opened, the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve V are closed, mineral multiphase media in the lifting pipe II sequentially pass through the bifurcation pipe III, the electromagnetic valve III, the mixed conveying pump II, the spiral connecting pipe, the electromagnetic valve IV and the bifurcation pipe IV, and finally flow to the lifting pipe I, so that the lifting system of the single pump fault working condition is not blocked.
When the second mixed delivery pump fails, the first electromagnetic valve and the second electromagnetic valve are opened, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are closed, and mineral multiphase media in the second lifting pipe sequentially pass through the second bifurcation pipe, the second electromagnetic valve, the spiral connecting pipe, the first mixed delivery pump, the first electromagnetic valve and the first bifurcation pipe and finally flow to the first lifting pipe, so that the lifting system under the working condition of single pump failure is ensured not to be blocked.
When the first mixed delivery pump and the second mixed delivery pump have fault working conditions at the same time, the electromagnetic valve five is opened, the electromagnetic valve one, the electromagnetic valve two, the electromagnetic valve three and the electromagnetic valve four are closed, mineral multiphase medium in the lifting pipe two directly flows to the lifting pipe one through the electromagnetic valve five, and the mixed delivery pump unit on other power nodes ensures that the double-pump fault working condition lifting system is not blocked.
Furthermore, the first mixing and conveying pump and the second mixing and conveying pump have the same specification and are symmetrically distributed and installed in the circumferential direction; the first bifurcation pipe and the second bifurcation pipe are identical to the third bifurcation pipe and the fourth bifurcation pipe in specification and are symmetrically arranged; the trusses are distributed in a triangular mode in the horizontal direction, the lifting pipe I is used as the gravity center of the trusses in the horizontal direction, the gravity center of the whole pump pipe system is guaranteed to be coincident with the central axis of the lifting pipe, and deflection of the long-distance lifting system is reduced.
Furthermore, the inlets of the first mixing and conveying pump and the second mixing and conveying pump are downward, the pump shafts are arranged in the vertical direction, the outlet directions of the spiral casings of the first mixing and conveying pump and the second mixing and conveying pump are in vertical upward structural types, the side walls of the spiral casings of the first mixing and conveying pump and the second mixing and conveying pump are inclined horizontally upward, so that mineral particles can smoothly flow back from the spiral casings and the impellers once backflow occurs, and the possibility of blockage is reduced.
Further, the width of the impeller outlet of the first or second mixing and conveying pump and the minimum overflow size of the impeller flow channel are both larger than 40% of the diameter of the impeller inlet, and the front cover plate and the rear cover plate of the impeller are both inclined horizontally and upwards based on the installation direction of the impeller, so that the particles with large particle size can pass smoothly. The outlet diffusion section structure of the first or second spiral case of the mixing pump is that the outlet direction changes from the axial direction to the axial normal direction.
The beneficial effects of the invention are as follows:
according to the vertical lifting pump pipe system for deep sea mining, through brand new design of the overall structure of the lifting pump pipe system, the power units of each power node are symmetrically distributed on the horizontal planes of the centrifugal pumps, the pipelines and the valves, so that the vertical stress of the whole vertical pipeline system is uniform, through the communication design of the pump valve pipelines, the smooth and non-blocking flow of the whole lifting system is ensured, and the whole lifting system can still normally operate when the pump units are in failure.
Drawings
FIG. 1 is a schematic view of a vertical lift pump pipe system according to the present invention;
FIG. 2 is a top view of a truss arrangement of a vertical lift pump pipe system according to the present invention;
FIG. 3 is a schematic diagram of a centrifugal mixing pump according to the present invention;
reference numerals illustrate:
1-a first riser; 2-a first bifurcation; 3-a first electromagnetic valve; 4-a first mixing and conveying pump; 5-bracket I; 6-a second electromagnetic valve; 7-a bifurcation pipe II; 8-a second lifting pipe; 9-a bifurcation pipe III; 10-an electromagnetic valve III; 11-a bracket II; 12-a second mixing and conveying pump; 13-a spiral connecting pipe; 14-a fourth electromagnetic valve; 15-a bifurcation tube IV; 16-a fifth electromagnetic valve; 17-truss; 41-volute; 42-impeller; 43-inlet flange.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1, the vertical lift pump system for deep sea mining of the present invention comprises a plurality of conveying units, wherein each conveying unit comprises a first lift pipe 1, a first bifurcation pipe 2, a first electromagnetic valve 3, a first mixing pump 4, a first bracket 5, a second electromagnetic valve 6, a second bifurcation pipe 7, a second lift pipe 8, a third bifurcation pipe 9, a third electromagnetic valve 10, a second bracket 11, a second mixing pump 12, a spiral connecting pipe 13, a fourth electromagnetic valve 14, a fourth bifurcation pipe 15, a fifth electromagnetic valve 16 and a truss 17, one end of the first lift pipe is connected and communicated with one end of the second lift pipe 8 through the fifth electromagnetic valve 16, and the other end of the first lift pipe 1 is connected with the other end of the second lift pipe 8 of the previous conveying unit; the first branch pipe 2 and the fourth branch pipe 15 are arranged on the first lifting pipe 1 and communicated, and the second branch pipe 7 and the third branch pipe 9 are arranged on the second lifting pipe 8 and communicated; the first mixing and conveying pump 4 and the second mixing and conveying pump 12 are connected in series through a spiral connecting pipe 13, two bifurcation ports are arranged on the spiral connecting pipe 13 and are respectively connected with a second electromagnetic valve 6 and a fourth electromagnetic valve 14, an outlet of the first mixing and conveying pump 4 is connected to a first bifurcation pipe 2 through a first electromagnetic valve 3, and a third bifurcation pipe 9 is connected to an inlet of the second mixing and conveying pump 12 through a third electromagnetic valve 10; the first bracket 5 and the second bracket 11 are both arranged in the truss 17, the first mixing pump 4 is arranged on the first bracket 5, and the second mixing pump 12 is arranged on the second bracket 11; the lifting pipe I1, the bifurcation pipe I2, the bifurcation pipe II 7, the lifting pipe II 8, the bifurcation pipe III 9 and the bifurcation pipe IV 15 are all arranged in the truss 17; the other end of the lifting pipe II 8 is connected with the other end of the lifting pipe I1 of the next conveying unit or is inserted into a relay bin filled with deep sea mineral particles, and a mixed conveying pump I4 or/and a mixed conveying pump II 12 is used for conveying deep sea mineral particle media, wherein the media are liquid-solid two-phase flow or liquid-solid-gas three-phase flow; the actions of the first electromagnetic valve 3, the second electromagnetic valve 6, the third electromagnetic valve 10, the fourth electromagnetic valve 14 and the fifth electromagnetic valve 16 are selectively controlled, so that the deep sea mineral grain medium modes of different pipelines under the multiple working conditions of a single conveying unit are realized. According to the invention, through the overall structural design of the mixing and conveying pump unit, the valve and the pipeline of the vertical lifting pump pipe system, the pump pipe mixing and conveying lifting system meets the technical requirements of high efficiency, no blocking, large particle size trafficability, smooth backflow and the like, and the whole lifting system can still normally operate when the pump unit fails.
The vertical lifting pump pipe system is vertically installed, the first mixing pump 4 and the second mixing pump 12 are power units of the conveying unit, and the working mode of the conveying unit is divided into a normal working condition and a pump unit fault working condition:
under the normal working condition, the first electromagnetic valve 3 and the third electromagnetic valve 10 are opened, the second electromagnetic valve 6, the fourth electromagnetic valve 14 and the fifth electromagnetic valve 16 are closed, and mineral multiphase medium in the second lifting pipe 8 sequentially passes through the third bifurcation pipe 9, the third electromagnetic valve 10, the second mixing and conveying pump 12, the spiral connecting pipe 13, the first mixing and conveying pump 4 and the first bifurcation pipe 2 and finally flows to the first lifting pipe 1.
When the first mixing and conveying pump 4 fails, the electromagnetic valve III 10 and the electromagnetic valve IV 14 are opened, the electromagnetic valve I3, the electromagnetic valve II 6 and the electromagnetic valve IV 16 are closed, and mineral multiphase medium in the lifting pipe II 8 sequentially passes through the bifurcation pipe III 9, the electromagnetic valve III 10, the mixing and conveying pump II 12, the spiral connecting pipe 13, the electromagnetic valve IV 14 and the bifurcation pipe IV 15, and finally flows to the lifting pipe I1;
when the second mixing pump 12 fails, the first electromagnetic valve 3 and the second electromagnetic valve 6 are opened, the third electromagnetic valve 10, the fourth electromagnetic valve 14 and the fifth electromagnetic valve 16 are closed, and mineral multiphase medium in the second lifting pipe 8 sequentially passes through the second bifurcation pipe 7, the second electromagnetic valve 6, the spiral connecting pipe 13, the first mixing pump 4, the first electromagnetic valve 3 and the first bifurcation pipe 2 and finally flows to the first lifting pipe 1;
when the first mixing and conveying pump 4 and the second mixing and conveying pump 12 have fault working conditions at the same time, the electromagnetic valve five 16 is opened, the electromagnetic valve one 3, the electromagnetic valve two 6, the electromagnetic valve three 10 and the electromagnetic valve four 14 are closed, and mineral multiphase medium in the lifting pipe two 8 directly flows to the lifting pipe one 1 through the electromagnetic valve five 16.
As shown in fig. 1 and 2, the first mixing pump 4 and the second mixing pump 12 have the same specification and are symmetrically distributed and installed in the circumferential direction; the first bifurcation pipe 2 and the second bifurcation pipe 7 have the same specification as the third bifurcation pipe 9 and the fourth bifurcation pipe 15, and are symmetrically arranged; the trusses 17 are distributed in a triangular shape in the horizontal direction, and the lifting pipe 1 is taken as the gravity center of the trusses in the horizontal direction.
As shown in fig. 3, the inlets of the first mixing pump 4 and the second mixing pump 12 are downward, the pump shafts are installed along the vertical direction, the outlet directions of the volutes of the first mixing pump 4 and the second mixing pump 12 are both in a vertically upward structural type, the structures of the first mixing pump 4 and the second mixing pump 12 are the same, and the side wall a and the side wall b of the volute 41 of the first mixing pump 4 are both inclined horizontally upward as exemplified by the first mixing pump 4. The width of the impeller 42 of the first mixing and conveying pump 4 and the minimum overflow size of the impeller flow channel are both larger than 40% of the diameter of the impeller inlet, and the front cover plate and the rear cover plate of the impeller are both inclined horizontally and upwards by taking the installation direction of the impeller as a reference; the outlet diffuser structure of the mixing pump-4 volute 41 is that the outlet direction changes from the axial direction to the axial normal direction.
Through the brand new design to the overall structure of lift pump pipe system, centrifugal pump, pipeline and valve horizontal plane direction symmetric distribution reduces the amount of deflection of whole vertical pipeline, through the intercommunication design to the pump valve pipeline, guarantees that whole lift system flows smoothly, non-blocking, and can guarantee that whole lift system still can normal operating when pump unit breaks down.
It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. The vertical lifting pump pipe system for deep sea mining is characterized by comprising a plurality of conveying units, wherein each conveying unit comprises a lifting pipe I (1), a bifurcation pipe I (2), an electromagnetic valve I (3), a mixed conveying pump I (4), a bracket I (5), an electromagnetic valve II (6), a bifurcation pipe II (7), a lifting pipe II (8), a bifurcation pipe III (9), an electromagnetic valve III (10), a bracket II (11), a mixed conveying pump II (12), a spiral connecting pipe (13), an electromagnetic valve IV (14), a bifurcation pipe IV (15), an electromagnetic valve V (16) and a truss (17), one end of the lifting pipe I (1) is connected with one end of the lifting pipe II (8) through the electromagnetic valve V (16) and communicated with the other end of the lifting pipe I (1) and the other end of the lifting pipe II (8) of the previous conveying unit; the first bifurcation pipe (2) and the fourth bifurcation pipe (15) are arranged on the first riser pipe (1) and are communicated, and the second bifurcation pipe (7) and the third bifurcation pipe (9) are arranged on the second riser pipe (8) and are communicated; the first mixing and conveying pump (4) and the second mixing and conveying pump (12) are connected in series through a spiral connecting pipe (13), two bifurcation ports are arranged on the spiral connecting pipe (13) and are respectively connected with a second electromagnetic valve (6) and a fourth electromagnetic valve (14), an outlet of the first mixing and conveying pump (4) is connected to the first bifurcation pipe (2) through the first electromagnetic valve (3), and the third bifurcation pipe (9) is connected to an inlet of the second mixing and conveying pump (12) through the third electromagnetic valve (10); the first bracket (5) and the second bracket (11) are both arranged in the truss (17), the first mixing pump (4) is arranged on the first bracket (5), and the second mixing pump (12) is arranged on the second bracket (11); the lifting pipe I (1), the bifurcation pipe I (2), the bifurcation pipe II (7), the lifting pipe II (8), the bifurcation pipe III (9) and the bifurcation pipe IV (15) are all arranged in the truss (17); the other end of the lifting pipe II (8) is connected with the other end of the lifting pipe I (1) of the next conveying unit or is inserted into a relay bin filled with deep sea mineral particles, and deep sea mineral particle media are conveyed through a mixing conveying pump I (4) or/and a mixing conveying pump II (12), wherein the media are liquid-solid two-phase flow or liquid-solid-gas three-phase flow;
the actions of the first electromagnetic valve (3), the second electromagnetic valve (6), the third electromagnetic valve (10), the fourth electromagnetic valve (14) and the fifth electromagnetic valve (16) are selectively controlled, so that the deep sea mineral granular medium modes of different pipelines under multiple working conditions are realized.
2. The vertical lift pump system for deep sea mining according to claim 1, wherein the vertical lift pump system is installed, the first mixing pump (4) and the second mixing pump (12) are power units of the conveying unit, the working mode of the conveying unit comprises a conventional working condition, the first electromagnetic valve (3) and the third electromagnetic valve (10) are opened, the second electromagnetic valve (6), the fourth electromagnetic valve (14) and the fifth electromagnetic valve (16) are closed under the conventional working condition, and mineral multi-phase medium in the second lift pipe (8) sequentially passes through the third bifurcation pipe (9), the third electromagnetic valve (10), the second mixing pump (12), the spiral connecting pipe (13), the first mixing pump (4), the first bifurcation pipe (2) and finally flows to the first lift pipe (1).
3. The deep sea mining vertical lift pump pipe system of claim 1, wherein: the mode of operation of the delivery unit also includes pump unit failure conditions,
when the first mixing and conveying pump (4) fails, the third electromagnetic valve (10) and the fourth electromagnetic valve (14) are opened, the first electromagnetic valve (3), the second electromagnetic valve (6) and the fifth electromagnetic valve (16) are closed, and mineral multiphase media in the second lifting pipe (8) sequentially pass through the third bifurcation pipe (9), the third electromagnetic valve (10), the second mixing and conveying pump (12), the spiral connecting pipe (13), the fourth electromagnetic valve (14) and the fourth bifurcation pipe (15) and finally flow to the first lifting pipe (1);
when the second mixing and conveying pump (12) fails, the first electromagnetic valve (3) and the second electromagnetic valve (6) are opened, the third electromagnetic valve (10), the fourth electromagnetic valve (14) and the fifth electromagnetic valve (16) are closed, and mineral multiphase media in the second lifting pipe (8) sequentially pass through the second bifurcation pipe (7), the second electromagnetic valve (6), the spiral connecting pipe (13), the first mixing and conveying pump (4), the first electromagnetic valve (3) and the first bifurcation pipe (2) and finally flow to the first lifting pipe (1);
when the first mixing and conveying pump (4) and the second mixing and conveying pump (12) have fault working conditions at the same time, the electromagnetic valve five (16) is opened, the electromagnetic valve one (3), the electromagnetic valve two (6), the electromagnetic valve three (10) and the electromagnetic valve four (14) are closed, and mineral multiphase medium in the lifting pipe two (8) directly flows to the lifting pipe one (1) through the electromagnetic valve five (16).
4. The deep sea mining vertical lift pump pipe system according to claim 1, wherein the first mixing pump (4) and the second mixing pump (12) have the same specification and are installed in a circumferentially symmetrical distribution; the first bifurcation pipe (2) and the second bifurcation pipe (7) have the same specification as the third bifurcation pipe (9) and the fourth bifurcation pipe (15), and are symmetrically arranged; the trusses (17) are distributed in a triangular mode in the horizontal direction, and the lifting pipe I (1) is used as the gravity center of the trusses in the horizontal direction.
5. The vertical lift pump pipe system for deep sea mining according to claim 1, wherein inlets of the first mixing pump (4) and the second mixing pump (12) are downward, pump shafts are installed in a vertical direction, outlet directions of volutes of the first mixing pump (4) and the second mixing pump (12) are vertical upward structural types, and side walls in the volutes of the first mixing pump (4) and the second mixing pump (12) are inclined horizontally upward.
6. The vertical lift pump pipe system for deep sea mining according to claim 1, wherein the impeller outlet width of the impeller (42) of the first or second mixing pump (4, 12) and the minimum overflow size of the impeller runner are both greater than 40% of the diameter of the impeller inlet, and the front and rear cover plates of the impeller are both inclined horizontally and upwards based on the installation direction of the impeller; the outlet diffusion section structure of the spiral case of the first mixing pump (4) or the second mixing pump (12) is that the outlet direction changes from the axial surface direction to the axial surface normal direction.
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| CN202111264471.XA CN114060034B (en) | 2021-10-28 | 2021-10-28 | Vertical lift pump pipe system for deep sea mining |
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| CN202111264471.XA CN114060034B (en) | 2021-10-28 | 2021-10-28 | Vertical lift pump pipe system for deep sea mining |
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| CN114060034A CN114060034A (en) | 2022-02-18 |
| CN114060034B true CN114060034B (en) | 2024-03-19 |
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| US8347982B2 (en) * | 2010-04-16 | 2013-01-08 | Weatherford/Lamb, Inc. | System and method for managing heave pressure from a floating rig |
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| CN114060034A (en) | 2022-02-18 |
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