CN212406719U

CN212406719U - Deep sea ore lifting device

Info

Publication number: CN212406719U
Application number: CN202021439474.3U
Authority: CN
Inventors: 潘化若; 康娅娟
Original assignee: Shenzhen Youhua Development Co ltd
Current assignee: Shenzhen Jinhang Deep Sea Mineral Development Group Co.,Ltd.
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-01-26
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a deep sea lifting device, include: a transfer pump disposed on a subsea mining vehicle; one end of the ore raising hose is connected with an output port of the conveying pump; the input port of the deep-sea centrifugal pump is connected with the other end of the ore-raising hose; one end of the ore-raising hard pipe is connected to an output port of the deep-sea centrifugal pump; and the suspension assembly is positioned on the mining ship and is arranged close to the outlet end of the mine raising hard pipe, and the suspension assembly is used for reducing the stress of the mine raising hard pipe caused by the roll, pitch and heave motions of the ship body. Compared with the prior art, the whole hydraulic pipeline type ore lifting system is simple in structure, the hose and the hard pipe form an integral pipeline conveying system, parameters are unified, movement energy is coordinated, meanwhile, laying and recycling time is reduced, and conveying efficiency is improved.

Description

Deep sea ore lifting device

Technical Field

The utility model relates to an ocean mining technical field especially relates to a deep sea lifting device.

Background

Abundant solid mineral resources in deep sea. The said materials are in the form of polymetallic nodule, deep sea sulfide, cobalt-rich crust, etc. and these resources contain over ten kinds of metals, including Mn, Ni, Co, Cu, etc. in the amount of tens to hundreds times that of land, and have bright commercial exploitation foreground. In recent years, with the rapid increase of the world demand for metal resources and the continuous development of the related technology of deep-sea mineral resource development, countries and enterprises in the world increasingly tighten the layout of the deep-sea mineral resource development, and exploration and exploitation of mineral resources hidden at the seabed have become important targets of countries in the world. The deep sea mineral resources are located at the seabed of thousands of meters deep, and due to the special factors of very complex seabed operating environment, high seabed pressure, various ocean current conditions and the like, the development and utilization of the deep sea resources must depend on modern high and new technology and equipment thereof.

The ore lifting system in charge of safely transporting the submarine ore to the mining ship on the sea level is one of important links of deep sea mining, and the hydraulic pipeline type ore lifting system is generally adopted from the existing research results of deep sea mining technology at home and abroad at present. The existing hydraulic pipeline type ore lifting system mainly adopts a structural form of 'a hose conveying pump + a hose + a middle bin + a hard pipe + an ore-raising pump'. The ore that the hose delivery pump will be gathered the mining vehicle is carried to the intermediate bin via the hose, is provided with feed bin and batcher on the intermediate bin, and the ore raising pump is established ties and is regarded as power device on the hard tube, inhales the pipeline with the ore pulp in the intermediate bin and pumps to the mining ship.

However, the existing hydraulic pipeline type ore lifting system has the following defects:

the motion state of a hydraulic pipeline type ore lifting system mainly composed of a mining ship, a middle bin, a lifting pump, a hard pipe, a soft pipe and a mining vehicle is complex, the middle bin is simultaneously connected with the hard pipe and the soft pipe, the soft pipe is connected with a submarine mining vehicle, and the hard pipe is connected with the mining ship, so that the middle bin is simultaneously subjected to the double functions of towing from a sea surface mining ship and walking from the submarine mining vehicle, the motion of the middle bin is complex and difficult to control, and the motions of the sea surface mining ship, the middle bin and the submarine mining vehicle are difficult to coordinate. Because of the existence of the intermediate bin, the hose conveying and the hard pipe conveying become two independent pipeline conveying systems, and the two independent pipeline systems have the problem of matching of operating parameters, so that the reliability and the conveying efficiency of the ore lifting system are reduced.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of above-mentioned prior art, the utility model aims to provide a deep sea winnowing device can save the intermediate bin structure, compares with prior art, makes whole hydraulic pipeline formula ore lift system simple structure, and hose and hard tube form a holistic pipe-line conveying system, and the parameter is unified, and the motion can be harmonious unanimous, also reduces the time of laying and retrieving simultaneously, has improved conveying efficiency.

The technical scheme of the utility model as follows:

a deep sea ore lifting device for transporting ore slurry collected by a subsea mining vehicle onto a mining vessel on the sea surface, comprising:

a transfer pump disposed on a subsea mining vehicle;

one end of the ore raising hose is connected with an output port of the conveying pump;

the input port of the deep-sea centrifugal pump is connected with the other end of the ore-raising hose;

one end of the ore-raising hard pipe is connected to an output port of the deep-sea centrifugal pump; and

the suspension assembly is positioned on the mining ship, connected to the lifting hard pipe and close to the outlet end of the lifting hard pipe, and is used for reducing stress generated by the rolling, pitching and heaving motions of the ship body on the lifting hard pipe.

Further, the delivery pump includes:

the output shaft of the submersible motor rotates and provides rotary power;

the volute is fixedly connected with the submersible motor;

the impeller is rotatably arranged in the volute and is fixedly connected with an output shaft of the submersible motor;

the spiral rod extends along the axial direction of the impeller, and one end of the spiral rod is fixedly connected with an output shaft of the submersible motor; and

the spiral starting head is fixedly connected to the other end of the spiral rod.

Furthermore, a plurality of deep sea buoyancy modules are arranged on the ore lifting hose and are arranged at intervals.

Furthermore, the deep sea centrifugal pump is provided with a plurality of, and is a plurality of the deep sea centrifugal pump sets up in series, and is a plurality of the raise ore hose is connected to the input port after the deep sea centrifugal pump is established ties, and is a plurality of the delivery outlet after the deep sea centrifugal pump establishes ties is connected the raise ore hard tube.

Further, a shallow sea centrifugal pump is connected to the ore-raising hard pipe.

Further, the suspension assembly includes a flexible joint and a tensioner;

the flexible joint is fixedly connected with the hard pipe for the ore-raising and a deck on a mining ship;

the tensioner is connected with the outer wall of the ore-raising hard pipe and is used for enabling the relative position of the ore-raising pipeline and the mining ship to be unchanged.

Further, shallow sea buoyancy modules are fixedly connected to the outer wall of the ore-raising hard pipe.

Furthermore, the deep sea ore raising device is characterized by further comprising two return pipes for returning the wastewater lifted to the mining ship to the seabed, wherein the two return pipes are bound and fixed with the ore raising hard pipe.

Further, shallow sea buoyancy module includes two half cylindricality buoyancy pieces, two half cylindricality buoyancy piece parcels return water pipe reaches raise ore deposit hard tube outer wall forms a cylinder.

Further, the deep sea centrifugal pump is an axial flow guide vane type centrifugal pump.

The beneficial effect of this scheme: the utility model provides a deep sea ore lifting device, in the scheme, the delivery pump of the mining vehicle is directly used for feeding, the ore lifting hose is used for directly conveying to the input port of the deep sea centrifugal pump, the ore pulp is lifted to the mining ship through the ore lifting hard pipe, and the suspension component is adopted at the joint of the ore lifting hard pipe and the mining ship, thereby effectively avoiding the defect that the ore lifting hard pipe is difficult to match with the pipeline on the mining ship after being stressed due to the motion of the mining vehicle and the mining ship, leading the motion of the mining ship, the middle pipeline and the seabed mining vehicle to be coordinated, simultaneously reducing the structure of the middle bin, leading the ore lifting hose and the ore lifting hard pipe to be directly connected through the deep sea centrifugal pump, forming an integral pipeline conveying system, leading the operation parameters of the pipeline conveying system to be unified, improving the reliability of the deep sea ore lifting device, avoiding the defect that the motion of the mining vehicle on the sea surface, the middle bin and the seabed mining vehicle is difficult to coordinate due to the complex stress condition in the prior, compared with the prior art, the whole hydraulic pipeline type ore lifting system is simple in structure, the laying and recycling time is reduced, and the conveying efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a deep sea ore-lifting device according to the present invention in application;

fig. 2 is a sectional view of a delivery pump in an embodiment of the deep sea ore-lifting device of the present invention;

fig. 3 is a schematic diagram of a suspension assembly in an embodiment of the deep sea ore-lifting device of the present invention;

fig. 4 is a front view of a shallow sea buoyancy module in an embodiment of a deep sea winnowing device of the present invention;

FIG. 5 is a view taken along line A of FIG. 4;

fig. 6 is a view from direction B of fig. 4.

The reference numbers in the figures: 100. a mining vehicle; 200. a mining vessel; 210. a storage bin; 220. a deck; 300. a delivery pump; 310. a submersible motor; 320. a volute; 330. an impeller; 340. a screw rod; 350. starting a rotary head; 360. a circular tube; 400. a lifting hose; 410. a deep sea buoyancy module; 500. a deep sea centrifugal pump; 510. a first pump; 520. a second pump; 530. shallow sea centrifugal pumps; 600. raising the ore hard pipe; 700. a suspension assembly; 710. a flexible joint; 720. a tensioner; 721. tensioning the rope; 800. a shallow sea buoyancy module; 810. a semi-cylindrical buoyancy block; 900. a water return pipe.

Detailed Description

The utility model provides a deep sea lifting device, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following reference is made to the drawing and the example is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the utility model provides a deep sea device of lifting mine for on carrying the ore pulp that seabed mining vehicle 100 gathered to the mining ship 200 on the sea, wherein, deep sea device of lifting mine includes: the device comprises a delivery pump 300, a lifting hose 400, a deep sea centrifugal pump 500, a lifting hard pipe 600 and a suspension assembly 700. The submarine mining vehicle 100 mines on the seabed, the delivery pump 300 is arranged on the submarine mining vehicle 100, and one end of the ore-raising hose 400 is connected with the output port of the delivery pump 300; the input port of the deep-sea centrifugal pump 500 is connected with the other end of the ore-raising hose 400; one end of the ore-raising hard pipe 600 is connected to the output port of the deep-sea centrifugal pump 500; the suspension assembly 700 is located on the mining vessel 200 and connected to the mine pipe 600 near the outlet end of the mine pipe, the suspension assembly 700 being used to reduce the forces generated by the hull roll, pitch and heave motions of the mine pipe 600. The mining ship 200 is provided with a pipeline for connecting with the outlet end of the lifting hard pipe 600 and receiving ore pulp conveyed in the lifting hard pipe 600 to reach the storage bin 210 at a specific position on the mining ship 200. The transfer pump 300 sucks the ore pulp on the submarine mining vehicle 100, the ore pulp is transferred by the ore-lifting hose 400 and directly delivered to the input port of the deep-sea centrifugal pump 500, and the ore pulp is transferred by the ore-lifting hard pipe 600 through the suction of the deep-sea centrifugal pump 500, so that the ore pulp is lifted to the mining ship 200, and the transfer process of the ore pulp is completed.

In the scheme, the ore is directly fed by the conveying pump 300 of the mining vehicle 100, the ore is directly conveyed to the input port of the deep-sea centrifugal pump 500 through the ore lifting hose 400, the ore pulp is lifted to the mining ship 200 through the ore lifting hard pipe 600, the suspension assembly 700 is adopted at the pipeline joint of the ore lifting hard pipe 600 and the mining ship 200, the defect that the ore lifting hard pipe 600 is difficult to match with a pipeline on the mining ship 200 after being stressed due to the movement of the mining vehicle 100 and the mining ship 200 is effectively overcome, the movement of the mining ship 200, an intermediate pipeline and the submarine mining vehicle 100 can be coordinated, the intermediate bin structure is reduced, the ore lifting hose 400 and the ore lifting hard pipe 600 are directly connected through the deep-sea centrifugal pump 500 to form an integral pipeline conveying system, the operation parameters of the pipeline conveying system are unified, the reliability of the deep-sea ore lifting device is improved, and the problem that the submarine mining ship 200 and the deep-sea mining ship are connected in the, Compared with the prior art, the hydraulic pipeline type ore lifting system has the advantages that the structure is simple, meanwhile, the laying and recovering time is reduced, and the conveying efficiency is improved.

In the specific structure of this embodiment: the transfer pump 300 is arranged on the mining vehicle 100, as shown in fig. 1 and 2, the transfer pump 300 is a transfer pump 300 with a high-speed spiral inflow port, the transfer pump 300 is used as a power device for transferring ore slurry to pump the ore slurry on the mining vehicle 100 to a lifting hose, and the transfer pump 300 comprises: a submersible motor 310, a volute 320, an impeller 330, a screw rod 340 and a start-up head 350. The submersible motor 310 is electrified, so that the output shaft of the submersible motor 310 rotates and provides high-speed rotation power; the volute 320 is fixedly connected to the submersible motor 310. The impeller 330 is rotatably disposed in the volute 320 and is fixedly connected to an output shaft of the submersible motor 310; thus, the impeller 330 and the volute 320 form a pump body, the screw rod 340 extends along the axial direction of the impeller 330, and one end of the screw rod 340 is fixedly connected with the output shaft of the submersible motor 310; the screwdriver head 350 is fixedly connected to the other end of the screw rod 340. Under submersible motor 310's power effect, delivery pump 300 pumps, and the ore pulp carries out spiral rising motion along hob 340, makes the ore pulp can form the spiral flow that the energy is comparatively concentrated to constantly carry out the entrainment to the ore pulp, adopt the delivery pump 300 of high-speed spiral inflow entrance, have the strong and high characteristics of concentration of carrying of power, can carry the ore pulp high-efficiently. Moreover, a circular tube 360 arranged along the axial direction of the spiral rod 340 is fixedly connected to the volute 320, and the circular tube 360 is sleeved outside the spiral rod 340; because the delivery pump 300 has the flowing form of the rotating flow field, the boundary condition of ore pulp in the circular tube 360 can be effectively improved, when the rotating angular velocity is small, the effect of 'rotary floating' of the ore can be achieved, the accumulation of the ore pulp can be further prevented, and the purposes of quick start and high-concentration delivery of a ore lifting system can be achieved.

Adopt the delivery pump 300 that has hob 340 and spiral start 350, make the delivery pump 300 make the ore pulp have the flow form in rotatory flow field at the during operation, can play the effect of lifting and holding up "float" to the ore, and then can prevent piling up of ore pulp, this hob 340 and spiral start 350's structure makes the delivery pump 300 can form the spiral flow that the energy is comparatively concentrated at the during operation, for the delivery pump that conventional deep sea mining water conservancy lift system adopted the straight-flow formula to start rotating, delivery pump 300 in this embodiment has hob 340 and spiral start 350, it is fast to have a spiral speed, the strong and high characteristics of concentration of carrying capacity, can carry the ore pulp high-efficiently.

The delivery outlet of the delivery pump 300 is connected with the ore-raising hose 400, and the lower end (input port) of the ore-raising hose 400 is hinged with the output port of the delivery pump 300. The outer wall of the ore-raising hose 400 is fixedly connected with a plurality of deep sea buoyancy modules 410, and the deep sea buoyancy modules 410 are arranged at intervals. The spaced apart deep sea buoyancy modules 410 form a distributed structure, such that the ore lifting hose 400 forms a wave structure bent up and down in the sea, that is, the portion of the ore lifting hose 400 where the deep sea buoyancy modules 410 are located serves as a peak, and the portion of the ore lifting hose 400 located between two adjacent deep sea buoyancy modules 410 forms a parabolic structure, and the trough of the parabola is located at a low point, such an arrangement enables the mining vehicle 100 to move freely in the largest possible range, that is, when the mining vehicle 100 moves, the ore lifting hose 400 is stretched, such that the low point of the parabola formed by the ore lifting hose 400 can move slowly upwards, and the distance between two adjacent peaks is lengthened, thereby releasing the movement distance of the mining vehicle 100 and improving the maximum movement range of the mining vehicle 100. The mine raising hose 400 itself is not entangled with the mining vehicle 100 and the mine raising pipe 600 and the lower end (low point) of the mine raising hose 400 does not bottom out and is located as far as possible outside the wake of the mining vehicle 100 propeller, thereby avoiding being influenced by the mining vehicle 100 or influencing the motion of the mining vehicle 100.

As shown in fig. 1, the upper end of the ore-raising hose 400 is hinged to the input port of the deep-sea centrifugal pump 500, the hinge is a flexible connection mode, when the flexible hinge joint is connected with equipment or a pipeline, the damage of vibration generated when the equipment is operated and the pipeline is used to the pipeline interface is reduced, the deep-sea centrifugal pump 500 is provided with a plurality of deep-sea centrifugal pumps 500 which are connected in series, the ore-raising hose 400 is connected to the input port of the plurality of deep-sea centrifugal pumps 500 which are connected in series, and the ore-raising hard pipe 600 is connected to the output port of the plurality of deep-sea centrifugal pumps 500 which are connected in series.

The deep-sea centrifugal pump 500 in the embodiment is provided with two guide vane type centrifugal pumps which are respectively a first ore-raising pump 510 and a second ore-raising pump 520, the first ore-raising pump 510 and the second ore-raising pump 520 are arranged in series, an input port of the deep-sea centrifugal pump arranged in series is connected to the top of the ore-raising hose 400, an output port of the deep-sea centrifugal pump arranged in series is connected to the bottom of the ore-raising hard pipe 600, and the deep-sea centrifugal pump 500 is arranged in the sea water which is 100m away from the sea bottom.

A shallow sea centrifugal pump 530 is connected to the position, close to the sea surface, of the ore-raising hard pipe 600. In a specific structure, the shallow sea centrifugal pump 530 is disposed at a position 1100 m from the sea level on the winnowing hard pipe 600 in consideration of no cavitation at the input port of the shallow sea centrifugal pump 530. The shallow sea centrifugal pump 530 is a centrifugal pump of a guide vane type using an axial flow as a raise pump. It is easy to think that, in order to improve the conveying force, the shallow sea centrifugal pump 530 may be provided in plurality for relay transmission.

In this embodiment, the two deep-sea centrifugal pumps 500 are used for increasing the extraction of the ore pulp in the lifting hose 400 to generate a strong conveying force, so that the ore pulp is conveyed from the lifting hose 400 to the lifting hard pipe 600, the ore pulp can be conveyed from the deep sea of 5900-6000 m depth to the shallow sea area through the lifting hard pipe 600, and then the ore pulp is further extracted through the shallow-sea centrifugal pump 530 to realize a relay conveying function in long pipeline conveying, so that the ore pulp can be conveyed from the shallow sea of 1100 m from the sea level to the storage bin 210 of the mining ship 200 to finish mining.

The raise mine hard pipe 600 is connected with a fixed pipeline (not marked in the figure) on the mining ship 200, as shown in fig. 1 and 3, a suspension assembly 700 is connected on one end of the raise mine hard pipe 600 close to the mining ship 200, and the suspension assembly 700 comprises a flexible joint 710 and a tensioner 720; the flexible joint 710 is fixedly connected with the lifting hard pipe 600 and a deck on the mining ship 200; the tensioner 720 is connected to the outer wall of the raise pipe 600 and serves to maintain the relative position of the raise pipe to the mining vessel 200. The mine raising hard pipe 600 is successfully connected to the mining ship 200 through the components, the top end of the mine raising hard pipe 600 passes through the moon pool of the mining ship 200 and then is suspended at the position of the deck 220 of the mining ship 200, and the flexible joint 710 and the tensioner 720 are combined at the suspension point to communicate the mine raising hard pipe 600 with the pipeline on the mining ship 200, so that the stress of the riser caused by the rolling, pitching and heaving motions of the ship body is reduced.

Typically, the hull of the mining vessel 200 is subjected to a combination of wind, wave, current and tide, producing six degrees of freedom of movement: three rotations: pitching, rolling, yawing, three translation: surging, swaying, heaving (heaving motion). The fore, surge and sway of the mining vessel 200 belong to horizontal plane movement and can be controlled by a dynamic positioning system, and when the mining vessel performs the fore, surge and heave, the pipeline system moves with the mining vessel in a heaving manner, which can cause the longitudinal vibration of the ore lifting pipe. During vibration, due to the influence of the self weight of the lifting pipeline system, the hard pipe can generate large axial deformation and is subjected to large axial stress. The axial stress from the tube to the uppermost end of the system is greatest and the amplitude at the lowermost end is greatest. Resonance occurs when the period of the waves equals the natural period of the pipe system. The axial stress and axial deformation of the piping system easily cause fatigue damage to the piping system, seriously affecting the stability, reliability and service life of the piping system and the stability of the subsea mining vehicle in operation, and further directly affecting the efficiency and economy of the entire mining system. Without special equipment, the pitching, rolling and heaving motions of the hull will inevitably have an effect on the riser pipework in the sea.

Therefore, the suspension assembly 700 is adopted to connect the raise hard pipe 600 with the mining ship 200, the raise hard pipe 600 is synchronous with the mining ship 200 in three translational directions, the flexible joint 710 allows a rotation angle of +/-15 degrees in a rotation direction, the bending moment of the top connection part of the raise hard pipe 600 is reduced, and the flexible joint 710 can bear the axial tension of 1800 tons. Thus, when the mining vessel 200 is rotated to a small extent by the action of the waves, the uplift pipe 600 and the pipe system in the sea are prevented from being torn due to the twisting of the flexible joint 710; tensioner 720 generally adopts the outer wall fixed connection of tensioning rope 721 and raise mine hard tube 600, tensioning rope 721 is provided with many, and be the symmetry setting, tensioning rope 721 fixed connection tensioning application of force structure (not drawn in the figure), tensioning application of force structure fixes on mining ship 200, tensioning application of force structure makes the tensioning rope tighten, thereby exert certain pulling force to the pipeline, make raise mine hard tube 600 can keep up-and-down synchronous motion with mining ship 200 like this, prevent that the pipeline from because unrestrained, tide action arouses the pipeline to vibrate, crooked, and then can reduce the influence that the heaving motion of mining ship 200 brought to the pipe-line system. Compared with the existing heave compensation system, the suspension assembly 700 can also reduce the influence of pitching, rolling and heave motions of the ship body on the pipeline system, so that the influence reaches the allowable range of a lifting system, and the suspension assembly 700 has the advantages of simple structure, long service life and strong practicability.

The shallow sea buoyancy module 800 is fixedly connected to the outer wall of the ore-lifting hard pipe 600. By the buoyancy of the shallow sea buoyancy module 800 in the sea water, the weight of the raise pipe 600 in the water can be reduced, thus reducing the top tension of the piping system, particularly the outlet of the raise pipe 600.

As shown in fig. 1 and 4, the deep sea ore lifting device further comprises two water return pipes 900 for returning the wastewater lifted to the mining ship 200 to the seabed, and the two water return pipes 900 are bound and fixed with the ore lifting hard pipe 600. One end of the water return pipe is communicated with the storage bin 210 on the mining ship 200, the other end of the water return pipe extends into the seawater, and the other end of the water return pipe 900 is generally output to the position 500 meters below the sea surface, so that the waste water lifted to the water surface can be returned to the sea bottom through the water return pipe, and the environment of the mining sea surface is protected.

As shown in fig. 5 and 6, the shallow sea buoyancy module 800 includes two half cylindrical buoyancy blocks 810, and the two half cylindrical buoyancy blocks 810 wrap the outer walls of the water return pipe 900 and the raise hard pipe 600 to form a cylinder. The ore-raising hard pipe 600 and the two water return pipes 900 are bundled together, the shallow sea buoyancy module 800 is wrapped outside, the pipeline system is wrapped by two semi-cylindrical buoyancy blocks 810 to form a cylinder, the buoyancy module is arranged in the seawater in a neutral mode, a groove (not shown in the figure) is formed in the outer wall of the buoyancy module, and the groove extends spirally along the outer wall of the buoyancy module, so that the effects of reducing vortex-induced vibration and water resistance are achieved.

In addition, the existing deep sea hydraulic pipeline type lifting system has the characteristics of long conveying distance, large conveying particle size, complex ore form, slow conveying start and the like. In general, dilute phase transportation is adopted for the safe operation of the whole system, so that the transportation efficiency is further limited, and the further development and the commercialization process of deep sea mining technology are restricted. And adopt the utility model discloses a deep sea winnowing device, the advantage lies in: the deep sea mining lifting system adopts hydraulic pipeline lifting, is provided with the return pipe 900, and can return the waste water lifted to the water surface to the seabed and protect the environment of the mining sea surface; the suspension assembly 700 combined by the tensioner 720 and the flexible joint 710 is adopted to connect the ore-raising hard pipe 600 and the mining ship 200, so that the influence of the pitching, rolling and heaving motions of the ship body on a pipeline system is reduced, the influence reaches the allowable range of an ore-raising system, the conveying pump 300 with a high-speed spiral flow inlet is adopted to provide a spiral flow starting mode for a hydraulic lifting system, and the spiral flow has the characteristics of energy concentration, high starting speed, strong carrying force, high conveying concentration and the like, so that the ore pulp siltation can be prevented, the energy loss is reduced, and the conveying efficiency is improved; the ore pulp is directly conveyed to the 500 inlets of the deep sea centrifugal pump by the conveying pump 300 at the high-speed spiral flow inlet without a middle bin, and the whole lifting system is simple in structure, high in laying and recovering speed, high in safety performance, good in adaptability and high in practicability.

To sum up, the utility model provides a deep sea ore lifting device, through directly feeding by the delivery pump of the mining vehicle, via the ore lifting hose, directly send to the input port of the deep sea centrifugal pump, via the ore lifting hard tube, lift the ore pulp onto the mining ship, and adopt the suspension assembly at the junction of the ore lifting hard tube and the mining ship, effectively avoid the disadvantage that the ore lifting hard tube is difficult to match with the pipeline on the mining ship after being stressed due to the motion of the mining vehicle and the mining ship, make the motion of the mining ship, the intermediate pipeline and the seabed mining vehicle coordinate consistently, simultaneously reduce the intermediate bin structure, make the ore lifting hose and the ore lifting hard tube directly connect through the deep sea centrifugal pump, form an integral pipeline conveying system, make the operation parameters of the pipeline conveying system uniform, improve the reliability of the deep sea ore lifting device, avoid the disadvantage that the three of the middle mining vehicle, the intermediate bin and the seabed mining vehicle are difficult to coordinate due to the complex stress condition in the prior art, compared with the prior art, the whole hydraulic pipeline type ore lifting system is simple in structure, the laying and recycling time is reduced, and the conveying efficiency is improved.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A deep sea ore lifting device for transporting ore slurry collected by a subsea mining vehicle to a mining ship on the sea surface, comprising:

a transfer pump disposed on a subsea mining vehicle;

2. The deep-sea mineral lifting apparatus of claim 1, wherein the transfer pump comprises:

the output shaft of the submersible motor rotates and provides rotary power;

the volute is fixedly connected with the submersible motor;

3. The deep sea ore lifting device of claim 1, wherein a plurality of deep sea buoyancy modules are arranged on the ore lifting hose at intervals.

4. The deep-sea ore-lifting device according to claim 1, wherein a plurality of deep-sea centrifugal pumps are arranged, the plurality of deep-sea centrifugal pumps are arranged in series, an inlet of the plurality of deep-sea centrifugal pumps connected in series is connected with an ore-lifting hose, and an outlet of the plurality of deep-sea centrifugal pumps connected in series is connected with an ore-lifting hard pipe.

5. The deep-sea ore-lifting device of claim 4, wherein a shallow-sea centrifugal pump is connected to the ore-lifting hard pipe.

6. The deep sea winnowing device of claim 1, wherein the suspension assembly includes a flexible joint and a tensioner;

7. The deep-sea ore-lifting device according to claim 1, wherein a shallow-sea buoyancy module is fixedly connected to the outer wall of the ore-lifting hard pipe.

8. The deep sea ore lifting device of claim 7, further comprising two water return pipes for returning the wastewater lifted to the mining ship to the seabed, wherein the two water return pipes are bound and fixed with the ore lifting hard pipe.

9. The deep-sea ore-lifting device of claim 8, wherein the shallow-sea buoyancy module comprises two semi-cylindrical buoyancy blocks, and the two semi-cylindrical buoyancy blocks wrap the water return pipe and the outer wall of the ore-lifting hard pipe and form a cylinder.

10. The deep sea winnowing device of any one of claims 1 to 9, wherein the deep sea centrifugal pump is an axial flow vane centrifugal pump.