CN112762022A

CN112762022A - Bidirectional rotation type oil-gas mixed transfer pump

Info

Publication number: CN112762022A
Application number: CN202110028351.3A
Authority: CN
Inventors: 权辉; 杜媛英; 史凤霞; 赵文举; 杨雪玲; 兰剑英; 孙晨曦; 刘晓艺
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-05-07
Anticipated expiration: 2041-01-11
Also published as: CN112762022B

Abstract

The invention discloses a bidirectional autorotation type oil-gas mixed transportation pump, which comprises a pump body connecting shaft and impellers, wherein the connecting shaft consists of a plurality of sections of rotating shafts, two adjacent rotating shafts are rotatably sleeved, commutators are arranged at two ends of the rotating shafts, an iron core is arranged in the middle of the rotating shafts, a plurality of groups of coils are wound on the iron core, two ends of each coil are connected with a conductor on a front commutators, the rotating shaft between the iron core and a rear commutators is connected with an inner shell through a bearing, a pair of magnets are arranged inside the inner shell, magnetic poles in two adjacent inner shells are opposite, one end of the rotating shaft is connected with the impellers through a support frame, original guide vanes are replaced by the impellers, the two adjacent impellers are reversely arranged, the rotating directions of the two impellers are opposite when the pump works, and thus the impellers in the forward and reverse directions simultaneously do work when the pump works, the power of the mixed transportation pump with the same unit axial length is twice of the original power.

Description

Bidirectional rotation type oil-gas mixed transfer pump

Technical Field

The invention relates to an oil-gas mixed transportation pump, in particular to a bidirectional rotation type oil-gas mixed transportation pump.

Background

At present, in current oil-gas mixture transport pump, all constitute a pressure boost unit by an impeller and a stator, whole pump body is internal to be constituted by a plurality of increase units, consequently at the during operation, it is the impeller rotation and does work, and the stator is then motionless, play the effect of drainage, make the fluid get into next-level impeller with the minimum state of water conservancy loss, consequently, the axial distance of whole oil-gas mixture transport pump is just very long, when the power of needs increase mixture transport pump, just need increase the quantity of pressure boost unit, this axial that will make mixture transport pump is longer, thereby lead to axial vibration and noise all big, defects such as operation unstability, and current oil-gas mixture transport pump all needs external motor just can drive the impeller rotation, make the volume grow of the pump body.

Disclosure of Invention

The technical task of the invention is to provide a bidirectional rotation type oil-gas mixture transfer pump aiming at the defects of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a bidirectional rotation type oil-gas mixed transmission pump, which comprises a pump body, a connecting shaft and an impeller which are positioned in the pump body, wherein the front end of the pump body is provided with a power line, the connecting shaft consists of a plurality of sections of rotating shafts, two adjacent rotating shafts are rotatably sleeved, two ends of the rotating shaft are provided with commutators, the front end of the rotating shaft is provided with a front commutator, the rear end of the rotating shaft is provided with a rear commutator, an iron core is arranged in the middle of the rotating shaft, a plurality of groups of coils are wound on the iron core, two ends of each coil are connected with the conductors on the front commutator, an inner shell is connected on a rotating shaft between the iron core and the rear commutator through a bearing, a pair of magnets are arranged in the inner shell, the magnetic poles in two adjacent inner shells are opposite, one end of the rotating shaft is connected with the impellers through a support frame, two adjacent impellers are arranged in opposite directions, namely, the blade inlet on the latter impeller is designed according to the blade outlet conditions on the former impeller;

the inside of pivot front end is equipped with a plurality of internal conductors, internal conductor is used for connecting two adjacent epaxial back commutators of changeing and preceding commutator, and two commutators of same commentaries on classics epaxial pass through the wire and connect, and the commutator that is located the connecting axle foremost is connected with the power cord.

Further improvement: two outer leads are symmetrically arranged outside the inner shell and used for connecting a front commutator and a rear commutator on the same rotating shaft.

Further improvement: elastic contacts are arranged at two ends of the outer lead and are in contact connection with conductors on the commutator.

Further improvement: the rear wires are used for connecting a front commutator and a rear commutator on the same rotating shaft.

Further improvement: the impeller comprises a rotating shaft, wherein supporting frames are arranged at two ends of the rotating shaft respectively and consist of a plurality of supporting rods, the outer ends of the supporting rods are connected with the inner wall of the impeller, and the inner ends of the supporting rods are connected with the rotating shaft.

Further improvement: the both ends of pivot are passed through bearing and pump body connection the front end of connecting axle is equipped with preceding replacement director, the outside and the power cord contact of leading commutator are connected, leading commutator is connected with the preceding commutator of first pivot through the epaxial interior wire of first commentaries on classics.

The invention has the advantages that: the original guide vanes are replaced by impellers, two adjacent impellers are arranged in opposite directions, namely the condition of a blade outlet on the former impeller of a blade inlet on the latter impeller is designed, the prerotation of the inlet of the next-stage impeller can be effectively eliminated, the hydraulic loss is reduced, so that the guide vanes are saved, one pressurizing unit is composed of a forward impeller and a reverse impeller, then the rotating directions of the forward impeller and the reverse impeller are opposite because magnetic poles in two adjacent inner shells are arranged oppositely, a contra-rotating impeller group is formed, so that when the mixed transportation pump works, the impellers in the forward direction and the reverse direction simultaneously do work, and secondary work is realized, therefore, the power of the current pressurizing unit is equivalent to the power of the two traditional pressurizing units, under the same axial length of the unit, the power of the mixed transportation pump is twice of the original power, or under the condition of ensuring the same pump output power efficiency, the unit axial length shortens by a wide margin, make the axial force reduce, when having reduced sealed requirement, axial vibration has still been reduced, the noise also reduces thereupon, compare in traditional defeated pump operation safe and reliable more, guarantee pump unit steady operation well, what the disrotatory formula impeller assembly can design in addition is than traditional impeller ratio rotational speed height, make oil gas defeated pump efficiency obtain improving, and because conductive coil and magnet all set up inside the impeller, so do not need external motor as the drive, the axial length of defeated pump has further been reduced.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a cross-sectional view a-a of fig. 1 of the present invention.

Figure 3 is a schematic diagram of a single cell structure of the present invention.

Fig. 4 is a schematic structural view of the rear lead wire arranged in the rotating shaft according to the present invention.

Fig. 5 is a schematic view showing the connection of the rotating shaft and the impeller through the support frame according to the present invention.

Detailed Description

The invention is described in detail below with reference to the drawings.

As shown in fig. 1-5, a bidirectional rotation type oil-gas mixture transfer pump comprises a pump body 1, a connecting shaft and an impeller 2, wherein the connecting shaft and the impeller 2 are arranged in the pump body 1, a power cord 10 is arranged at the front end of the pump body 1, the connecting shaft is composed of a plurality of sections of rotating shafts 3, two adjacent rotating shafts 3 are rotatably sleeved, commutators 4 are arranged at two ends of each rotating shaft 3, a front commutator 41 is arranged at the front end of each rotating shaft 3, a rear commutator 42 is arranged at the rear end of each rotating shaft 3, an iron core 31 is arranged in the middle of each rotating shaft 3, a plurality of groups of coils 5 are wound on the iron core 31, two ends of each coil 5 are connected with a conductor 40 on the front commutator 41, an inner shell 6 is connected on the rotating shaft 3 between the iron core 31 and the rear commutator 42 through a bearing, a pair of magnets 61 is arranged inside the inner shell 6, the magnetic poles in two adjacent inner shells 6 are opposite, one end of, the two adjacent impellers 2 are arranged in opposite directions, namely, the blade inlet on the next impeller 2 is designed according to the blade outlet condition on the previous impeller 2;

a plurality of inner wires 71 are arranged inside the front end of the rotating shaft 3, the inner wires 71 are used for connecting the rear commutator 42 and the front commutator 41 on two adjacent rotating shafts 3, the two commutators 4 on the same rotating shaft 3 are connected through wires, and the commutator 4 at the foremost end of the connecting shaft is connected with the power line 10.

Two outer leads 72 are symmetrically arranged outside the inner shell 6 and used for connecting the front commutator 41 and the rear commutator 42 on the same rotating shaft 3; elastic contacts 74 are arranged at two ends of the outer lead 72, and the contacts 74 are in contact connection with the conductor 40 on the commutator 4; or a plurality of rear wires 73 are arranged inside the rotating shaft 3, and the rear wires 73 are used for connecting the front commutator 41 and the rear commutator 42 on the same rotating shaft 3.

Both ends of pivot 3 all are equipped with support frame 8, support frame 8 comprises a plurality of bracing pieces 81, the outer end of bracing piece 81 and impeller 2's inner wall connection, the inner of bracing piece 81 is connected with pivot 3.

The two ends of the rotating shaft 3 are connected with the pump body 1 through bearings, a front displacement reverser 11 is arranged at the front end of the connecting shaft, the outer side of the front commutator 11 is in contact connection with a power line 10, and the front commutator 11 is connected with a front commutator 41 on a first rotating shaft through an inner lead 71 on the first rotating shaft 3.

The working principle is as follows: the design is carried out on the condition that the blade inlet on one impeller 2 is designed on the blade outlet on the previous impeller 2, the prerotation of the inlet of the next impeller 2 can be effectively eliminated, the hydraulic loss is reduced, a guide vane or a fairing is not required to be independently arranged, the impellers 2 can efficiently run in a multi-stage mode, the number of the coils 5 on the iron core 31 is X, the number of the pairs of the conductors 40 on the commutator 4 is Y, the number of the pairs of the inner conductors 71 and the rear conductors 73 is Z, each pair of the conductors 40, the inner conductors 71 and the outer conductors 73 are symmetrically arranged, at the moment, Z is more than or equal to Y and more than or equal to X, and the coils 5, the inner conductors 71, the outer conductors 72 or the rear conductors 73 are all connected with the same pair.

When the electric power machine works, after the power supply line 10 is powered on, current enters the front direction-changing device 11 through the power supply line 10, then enters the front commutator 41 through the inner lead wire 71, at the moment, part of the current enters the coil 5, so that the electrified coil 5 rotates in a magnetic field to drive the impeller 2 to rotate, the other part of the current enters the rear commutator 42 through the outer lead wire 72 or the rear lead wire 73, then the current is transmitted into the next front commutator 41 through the inner lead wire 71 at the front end of the next rotating shaft 3 to provide electric energy for the next coil 5, so that the next coil 5 rotates in the magnetic field, at the moment, because the magnetic poles of the two adjacent inner shells 6 are opposite, the rotating directions of the two adjacent impellers 2 are also opposite, namely the front impeller 2 is the forward impeller 21, the rear impeller 2 is the reverse impeller 22, so that a guide vane is omitted, at the moment, one pressurizing unit is composed of a forward unit structure and a reverse unit structure, the rotation directions of the forward impeller 21 and the reverse impeller 22 are opposite to each other to form a contra-rotating impeller group, so that when the mixing pump works, the impellers 2 in the forward direction and the reverse direction do work simultaneously, and secondary work is realized, so that the power of the conventional pressurizing unit is equivalent to the power of the conventional two pressurizing units.

Since the design of the invention can increase the number of single structural units or pressurizing units according to the power requirement of the mixing pump, a part of schematic diagrams are omitted at the end of fig. 1.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a two-way rotation formula oil-gas multiphase pump, includes the pump body to and be located connecting axle and the impeller of pump body, its characterized in that: the utility model discloses a motor pump, including pump body, pump body front end, connecting axle, iron core, support frame, impeller, power cord, the connecting axle comprises a plurality of sections pivots, adopts the rotation type to cup joint between two adjacent pivots the both ends of pivot are equipped with the commutator, the pivot front end be preceding commutator, the rear commutator of pivot rear end be equipped with the iron core the middle part of pivot be equipped with a plurality of group's coils of winding on the iron core, the both ends of coil are connected with the conductor on the preceding commutator be connected with the inner shell through the bearing in the pivot between iron core and the rear commutator the inside of inner shell is equipped with a pair of magnet, and the magnetic pole in two adjacent inner shells is opposite, the one end of pivot is passed through the support frame and is connected with the impeller, and two adjacent impellers are each other and are reverse setting, and the blade export condition of blade.

2. The bidirectional rotation type oil-gas mixture transfer pump according to claim 1, characterized in that: two outer leads are symmetrically arranged outside the inner shell and used for connecting a front commutator and a rear commutator on the same rotating shaft.

3. The bidirectional rotation type oil-gas mixture transfer pump according to claim 1, characterized in that: elastic contacts are arranged at two ends of the outer lead and are in contact connection with conductors on the commutator.

4. The bidirectional rotation type oil-gas mixture transfer pump according to claim 1, characterized in that: the rear wires are used for connecting a front commutator and a rear commutator on the same rotating shaft.

5. The bidirectional rotation type oil-gas mixture transfer pump according to any one of claims 1 to 4, characterized in that: the impeller comprises a rotating shaft, wherein supporting frames are arranged at two ends of the rotating shaft respectively and consist of a plurality of supporting rods, the outer ends of the supporting rods are connected with the inner wall of the impeller, and the inner ends of the supporting rods are connected with the rotating shaft.

6. The bidirectional rotation type oil-gas mixture transfer pump according to claim 1, characterized in that: the both ends of pivot are passed through bearing and pump body connection the front end of connecting axle is equipped with preceding replacement director, the outside and the power cord contact of leading commutator are connected, leading commutator is connected with the preceding commutator of first pivot through the epaxial interior wire of first commentaries on classics.