阅读说明：本技术 深海采矿提升电泵 (Deep sea mining lifting electric pump ) 是由 关英杰 吉成才 郑皓 李满红 双志 程阳锐 彭建平 张明 于 2021-08-12 设计创作，主要内容包括：本发明提出一种深海采矿提升电泵,包括第一泵、双输出轴潜水电机和第二泵；所述第一泵安装于所述双输出轴潜水电机的第一输出端,所述第二泵安装于所述双输出轴潜水电机的第二输出端；位于所述第一输出端的第一输出轴与所述第一泵的第一泵轴连接并用于驱动所述第一泵轴进而产生第一轴向力,位于所述第二输出端的第二输出轴与所述第二泵的第二泵轴连接并用于驱动所述第二泵轴进而产生与所述第一轴向力方向相反的第二轴向力。在本发明的技术方案中,由于所述第一泵上产生的所述第一轴向力的方向与所述第二泵上产生的所述第二轴向力的方向相反,因此总轴向力减少,进而能够减少整体装置的振动,保证各处的连接强度,提高整体装置的使用寿命。(The invention provides a lifting electric pump for deep sea mining, which comprises a first pump, a double-output-shaft submersible motor and a second pump, wherein the first pump is connected with the double-output-shaft submersible motor; the first pump is arranged at the first output end of the double-output-shaft submersible motor, and the second pump is arranged at the second output end of the double-output-shaft submersible motor; and a second output shaft positioned at the second output end is connected with a second pump shaft of the second pump and is used for driving the second pump shaft to generate a second axial force opposite to the first axial force. In the technical scheme of the invention, the direction of the first axial force generated on the first pump is opposite to the direction of the second axial force generated on the second pump, so that the total axial force is reduced, the vibration of the whole device can be reduced, the connection strength of each part is ensured, and the service life of the whole device is prolonged.)

1. A deep sea mining lifting electric pump is characterized by comprising a first pump (1), a double-output-shaft submersible motor (2) and a second pump (3); the first pump (1) is arranged at the first output end of the double-output-shaft submersible motor (2), and the second pump (3) is arranged at the second output end of the double-output-shaft submersible motor (2); and a first output shaft (21) positioned at the first output end is connected with a first pump shaft (11) of the first pump (1) and used for driving the first pump shaft (11) to generate a first axial force, and a second output shaft (22) positioned at the second output end is connected with a second pump shaft (31) of the second pump (3) and used for driving the second pump shaft (31) to generate a second axial force opposite to the first axial force.

2. The deep sea mining lifting electric pump according to claim 1, characterized in that the axis of the first output shaft (21) and the axis of the second output shaft (22) are arranged in the same linear direction, and the direction of rotation of the first output shaft (21) and the direction of rotation of the second output shaft (22) are opposite; the first pump (1) and the second pump (3) are arranged in opposite directions.

3. The deep sea mining lifting electric pump according to claim 2, characterized in that said double output shaft submersible motor (2) comprises a main body (23), a first protection cover (24) and a second protection cover (25); the first protective cover (24) is connected to one end of the main body (23), and the second protective cover (25) is connected to the other end of the main body (23); the first output shaft (21) is mounted in the main body (23) and extends from within the main body (23) into the first protective cover (24), and the second output shaft (22) is mounted in the main body (23) and extends from within the main body (23) into the second protective cover (25).

4. The deep sea mining lifting electric pump according to claim 3, characterized in that the first pump (1) is mounted to the first protective cover (24) and the first pump shaft (11) extends into the first protective cover (24) to be connected with the first output shaft (21), the second pump (3) is mounted to the second protective cover (25) and the second pump shaft (31) extends into the second protective cover (25) to be connected with the second output shaft (22).

5. The deep-sea mining lifting electric pump according to claim 4, characterized in that said first pump (1) comprises a first pump body (12) and a first pipe body (13); one end of the first pump body (12) is provided with a first outlet communicated with the external space, and the other end of the first pump body is provided with a first inlet; one end of the first pipe body (13) is arranged at the first inlet, and the other end of the first pipe body (13) is arranged at the first protective cover (24); and the side wall of the first pipe body (13) is provided with an injection hole communicated with the second pump (3).

6. Deep-sea mining lifting electric pump according to claim 5, characterized in that said second pump (3) comprises a second pump body (32) and a second pipe body (33); one end of the second pump body (32) is provided with a second outlet, and the other end of the second pump body is provided with a second inlet; one end of the second pipe body (33) is mounted at the second inlet, the other end of the second pipe body (33) is mounted at the second protective cover (25), and an inlet communicated with the external space is formed in the side wall of the second pipe body (33); an external pipeline (4) is connected between the second outlet and the injection hole.

7. The deep sea mining lifting electric pump according to any of claims 1-6, characterized in that it further comprises a pull rod (5); the first pump (1) and the second pump (3) are respectively connected with the double-output-shaft submersible motor (2) through a group of pull rods (5).

8. The deep sea mining lifting electric pump according to any of claims 1-6, characterized in that it further comprises an outlet pressure sensor (6) and an inlet pressure sensor (7); the outlet pressure sensor (6) is mounted on the first pump (1), and the inlet pressure sensor (7) is mounted on the second pump (3).

9. The deep sea mining lifting electric pump according to any of claims 1-6, characterized in that the first pump (1) and the second pump (3) are both multistage pumps; the first pump (1) further comprises a plurality of stages of first impellers (14) mounted on the first pump shaft (11) and a corresponding number of stages of first space guide vanes (15); the second pump (3) further comprises a plurality of stages of second impellers (34) mounted on the second pump shaft (31) and a corresponding number of second space guide vanes (35).

10. Deep sea mining lifting electric pump according to claim 9, characterized in that between each stage of the first impeller (14) and the respective first space vane (15) and between each stage of the second impeller (34) and the respective second space vane (35) there is a filtering sand control disc (8).

Technical Field

The invention relates to the technical field of deep sea mining, in particular to a lifting electric pump for deep sea mining.

Background

At present, with the rapid development of current industry, the mineral resources on land are gradually depleted, and the reserves of metals such as nickel, cobalt, copper, manganese and the like in the mineral resources in deep sea are thousands of times of those on land, so that the development and utilization technology of the mineral resources in deep sea is more and more emphasized by countries in the world.

Deep-sea mining lifting electric pumps are used on mining boats that lift seafloor minerals from the seafloor to the surface, which occupies a significant position in deep-sea mining systems. When the existing lifting electric pump works in water, the vibration amplitude of the pump body can lead to the large vibration amplitude of the whole device, so that the connection strength of the lifting electric pump at each position can be gradually reduced under long-term work, and the lifting electric pump can be damaged finally.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a lifting electric pump for deep sea mining with small vibration amplitude.

In order to solve the technical problems, the invention adopts the following technical scheme:

a lifting electric pump for deep sea mining comprises a first pump, a double-output-shaft submersible motor and a second pump; the first pump is arranged at the first output end of the double-output-shaft submersible motor, and the second pump is arranged at the second output end of the double-output-shaft submersible motor; and a second output shaft positioned at the second output end is connected with a second pump shaft of the second pump and is used for driving the second pump shaft to generate a second axial force opposite to the first axial force.

Furthermore, the axis of the first output shaft and the axis of the second output shaft are arranged along the same straight line direction, and the rotating direction of the first output shaft is opposite to that of the second output shaft; the first pump and the second pump are arranged in opposite directions.

Further, the double-output-shaft submersible motor comprises a main body, a first protective cover and a second protective cover; the first protective cover is connected to one end of the main body, and the second protective cover is connected to the other end of the main body; the first output shaft is mounted within the body and extends from within the body into the first protective cover, and the second output shaft is mounted within the body and extends from within the body into the second protective cover.

Further, the first pump is mounted to the first protective cover and the first pump shaft extends into the first protective cover to connect with the first output shaft, and the second pump is mounted to the second protective cover and the second pump shaft extends into the second protective cover to connect with the second output shaft.

Further, the first pump comprises a first pump body and a first pipe body; one end of the first pump body is provided with a first outlet communicated with the external space, and the other end of the first pump body is provided with a first inlet; one end of the first pipe body is mounted at the first inlet, and the other end of the first pipe body is mounted at the first protective cover; and the side wall of the first pipe body is provided with an injection hole communicated with the second pump.

Further, the second pump comprises a second pump body and a second pipe body; one end of the second pump body is provided with a second outlet, and the other end of the second pump body is provided with a second inlet; one end of the second pipe body is mounted at the second inlet, the other end of the second pipe body is mounted at the second protective cover, and an inlet communicated with the external space is formed in the side wall of the second pipe body; an external pipeline is connected between the second outlet and the injection hole.

Further, the deep sea mining lifting electric pump further comprises a pull rod; the first pump and the second pump are respectively connected with the double-output-shaft submersible motor through a group of pull rods.

Further, the deep sea mining lift electric pump further comprises an outlet pressure sensor and an inlet pressure sensor; the outlet pressure sensor is mounted on the first pump, and the inlet pressure sensor is mounted on the second pump.

Further, the first pump and the second pump are both multi-stage pumps; the first pump further comprises a plurality of stages of first impellers mounted on the first pump shaft and a corresponding plurality of stages of first space guide vanes; the second pump also includes a plurality of stages of second impellers mounted on the second pump shaft and a corresponding plurality of second space guide vanes.

Furthermore, each stage of the first impeller and the corresponding first space guide vane and each stage of the second impeller and the corresponding second space guide vane are provided with a filtering sand control disc.

Compared with the prior art, the invention has the advantages that:

1. because the direction of the first axial force generated on the first pump is opposite to the direction of the second axial force generated on the second pump, the total axial force is reduced, the vibration of the whole device can be reduced, the connection strength of each part is ensured, and the service life of the whole device is prolonged.

2. When the device works in deep sea, the vibration of the whole device is reduced, so that the separation of all the joints can be prevented, and all the components of the whole device are prevented from falling into the deep sea, therefore, the economic loss can be prevented, and the damage to the environment in the deep sea can be prevented.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a submersible motor with dual output shafts according to the present invention;

FIG. 3 is a schematic view of the construction of a first pump according to the present invention;

fig. 4 is a schematic view of the structure of a second pump in the present invention.

The reference numerals in the figures denote: 1. a first pump; 11. a first pump shaft; 12. a first pump body; 13. a first pipe body; 14. a first impeller; 15. a first spatial guide vane; 2. a submersible motor with double output shafts; 21. a first output shaft; 22. a second output shaft; 23. a main body; 24. a first protective cover; 25. a second protective cover; 3. a second pump; 31. a second pump shaft; 32. a second pump body; 33. a second tube body; 34. a second impeller; 35. a second spatial guide vane; 4. an external pipe; 5. a pull rod; 6. an outlet pressure sensor; 7. an inlet pressure sensor; 8. and (5) filtering a sand-proof disc.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.

In order to solve the technical problem, the invention provides a deep-sea mining lifting electric pump.

Referring to fig. 1, the deep sea mining lifting electric pump comprises a first pump 1, a double-output-shaft submersible motor 2 and a second pump 3; the first pump 1 is arranged at the first output end of the double-output-shaft submersible motor 2, and the second pump 3 is arranged at the second output end of the double-output-shaft submersible motor 2; the first output shaft 21 at the first output end is connected to the first pump shaft 11 of the first pump 1 and is used for driving the first pump shaft 11 to generate a first axial force, and the second output shaft 22 at the second output end is connected to the second pump shaft 31 of the second pump 3 and is used for driving the second pump shaft 31 to generate a second axial force opposite to the first axial force. Because the direction of the first axial force generated on the first pump 1 is opposite to the direction of the second axial force generated on the second pump 3, the total axial force is reduced, so that the vibration of the whole device can be reduced, the connection strength of each part is ensured, and the service life of the whole device is prolonged. When the device works in deep sea, the vibration of the whole device is reduced, so that the separation of all the joints can be prevented, and all the components of the whole device are prevented from falling into the deep sea, therefore, the economic loss can be prevented, and the damage to the environment in the deep sea can be prevented. Specifically, the axis of the first output shaft 21 and the axis of the second output shaft 22 are arranged along the same straight direction, the rotation direction of the first output shaft 21 is opposite to the rotation direction of the second output shaft 22, the first pump 1 and the second pump 3 are arranged in opposite directions, and the directions of axial forces generated during operation are opposite, so that the total axial force can be reduced. Further, the double-output-shaft submersible motor 2 is a double-output-shaft submersible motor with thrust bearings. The first output shaft 21 and the first pump shaft 11, and the second output shaft 22 and the second pump shaft 31 are connected by a coupling. Preferably, the first pump 1 and the second pump 3 are arranged in such a way that: the inlet end of the first pump 1 and the inlet end of the second pump 3 are arranged opposite to each other. Preferably, the end of the first protection cover 24 connected to the main body 23 and the end of the second protection cover 25 connected to the main body 23 are both flanges, the two ends of the main body 23 are both flanges, and the first protection cover 24 and the second protection cover 25 are flange-connected to the main body 23 through the same set of pull rods 5. The first pump 1 and the second pump 3 are respectively connected with the double-output-shaft submersible motor 2 through a group of pull rods 5. The tie rod 5 is capable of taking up dynamic loads and of transmitting axial forces. Wherein, the first output shaft 21 and the first pump shaft 11 are rigidly coupled through the shaft coupling, the axial force of the first pump 1 and the weight of the rotor thereof are transmitted to the thrust bearing at the upper part of the double-output shaft submersible motor 2 through the shaft coupling, the second output shaft 22 and the second pump shaft 31 are rigidly coupled through the shaft coupling, the axial force of the second pump 3 and the weight of the rotor thereof are transmitted to the thrust bearing at the lower part of the double-output shaft submersible motor 2 through the shaft coupling, thereby the axial force generated by the deep sea mining lifting electric pump during operation is counteracted by the first pump 1 and the second pump 3 which are arranged in opposite directions, and the total axial force is reduced.

Referring to fig. 2, specifically, the dual output shaft submersible motor 2 includes a main body 23, a first protective cover 24 and a second protective cover 25; the first protective cover 24 is connected to one end of the main body 23, and the second protective cover 25 is connected to the other end of the main body 23; the first output shaft 21 is mounted within the body 23 and extends from within the body 23 into the first protective cover 24, and the second output shaft 22 is mounted within the body 23 and extends from within the body 23 into the second protective cover 25. The first pump 1 is mounted on the first protective cover 24 and the first pump shaft 11 extends into the first protective cover 24 and is connected to the first output shaft 21, and the second pump 3 is mounted on the second protective cover 25 and the second pump shaft 31 extends into the second protective cover 25 and is connected to the second output shaft 22. Through first safety cover 24 with second safety cover 25, it is right first pump shaft 11 second pump shaft 31 first output shaft 21 and second output shaft 22 play the guard action, not only can avoid external bad condition to cause the damage to each axle, can also guarantee the connection stability between each axle. Further, the side wall of the first protection cover 24 and the side wall of the second protection cover 25 are both provided with access holes, so that the components in the cover bodies can be conveniently overhauled and checked.

Referring to fig. 1, 3 and 4, specifically, the first pump 1 includes a first pump body 12 and a first pipe 13; one end of the first pump body 12 is provided with a first outlet communicated with the external space, and the other end is provided with a first inlet; one end of the first pipe 13 is mounted at the first inlet, and the other end of the first pipe 13 is mounted at the first protective cover 24; the side wall of the first pipe 13 is provided with an injection hole communicated with the second pump 3. The second pump 3 comprises a second pump body 32 and a second tubular body 33; one end of the second pump body 32 is provided with a second outlet, and the other end is provided with a second inlet; one end of the second pipe 33 is installed at the second inlet, the other end of the second pipe 33 is installed at the second protective cover 25, and an inlet communicated with an external space is formed in the side wall of the second pipe 33; an external pipeline 4 is connected between the second outlet and the injection hole, and the external pipeline 4 can solve the problem of material blockage caused by the annular flow channel adopted by the existing lifting electric pump. Further, both ends of the first pipe 13 and both ends of the second pipe 33 are flanges, both ends of the first pipe 13 are respectively flange-connected to the first pump body 12 and the first protective cover 24, and both ends of the second pipe 33 are respectively flange-connected to the second pump body 32 and the second protective cover 25.

Referring to fig. 3 and 4, specifically, the first pump 1 and the second pump 3 are both multi-stage pumps; the first pump 1 further comprises a plurality of stages of first impellers 14 mounted on the first pump shaft 11 and a corresponding plurality of stages of first space guide vanes 15; the second pump 3 further comprises a plurality of stages of second vanes 34 and a corresponding plurality of second space guide vanes 35 mounted on the second pump shaft 31. A filtering sand control disc 8 is arranged between each stage of the first impeller 14 and the corresponding first space guide vane 15 and between each stage of the second impeller 34 and the corresponding second space guide vane 35; space guide vane passes through the bearing with the pump shaft and is connected, consequently, through filter sand control disc 8 can prevent that particulate matter or other impurity from getting into the bearing between space guide vane and the pump shaft, and then can improve the life of bearing. Furthermore, the first space guide vanes 15 at all levels are connected through flanges, O-shaped sealing rings are arranged between the first space guide vanes 15 at all levels, the second space guide vanes 35 at all levels are connected through flanges, and O-shaped sealing rings are arranged between the second space guide vanes 35 at all levels, so that the sealing performance of each flow channel is ensured. Furthermore, according to the requirement of the lifting working condition on the lifting electric pump lift, the lifting electric pump can be designed into eight stages or even more stages, the stage number of the first pump 1 and the stage number of the second pump 3 are respectively half of the total stage number of the lifting electric pump, the flow channel of a single pump can be shortened, and the impeller and the space guide vane of the single pump have the characteristic of a mixed flow pump, so that the flow channel of the pump is basically arranged along the axis direction, the backflow capacity of coarse particles after abnormal condition pump stopping is ensured, and the problem that the coarse particles are blocked in the flow channel is solved. Each space guide vane is provided with an annular flow passage, and the flow passages of the first pump 1 and the second pump 3 are smooth streamline integral flow passages.

Referring to fig. 2-4, the deep-sea mining electric lifting pump further includes an outlet pressure sensor 6 and an inlet pressure sensor 7; the outlet pressure sensor 6 is mounted on a first outlet of the first pump 1, and the inlet pressure sensor 7 is mounted on the second pump 3. Specifically, first export is equipped with and is used for monitoring mineral outlet pressure value export pressure sensor 6, the entry of second body 33 lateral wall is equipped with and is used for monitoring mineral import department pressure value import pressure sensor 7. Further, the deep sea mining lifting electric pump further comprises a rotating speed sensor, a torque meter and a vibration sensor; each coupler is provided with the rotating speed sensor and the torque meter so as to monitor the working state of the coupler; the first pump 1 and the second pump 3 are both provided with vibration sensors for monitoring the vibration condition of the pump body.

The working principle of the invention is as follows: the deep sea mining lifting electric pump is installed and is distributed together with an underwater mining vehicle, when the distribution of the mining vehicle is completed, the deep sea mining lifting electric pump is arranged at a certain underwater position, the deep sea mining lifting electric pump is started through a soft starting device, the double-output-shaft submersible motor 2 drives the first pump 1 and the second pump 2 to rotate until the rated rotating speed is reached, submarine minerals collected by the underwater mining vehicle are crushed by a crusher and are conveyed to the inlet of the second pump 3 and enter the second pump body 32, the minerals in the second pump body 32 are pressurized through the second impellers 34 at all levels, flow out of the second outlet and enter the first pump body 12 through the external pipeline 4, and are pressurized through the first impellers 14 at all levels and enter the upper lifting pipeline, and the minerals are lifted to a mining surface ship.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.