阅读说明：本技术 一种单轴双向传动的油气混输泵 (Single-shaft bidirectional transmission oil-gas mixed transportation pump ) 是由 权辉 杜媛英 尚冬梅 任兴星 杨亚威 于 2021-01-11 设计创作，主要内容包括：本发明公开了一种单轴双向传动的油气混输泵,包括泵体、叶轮和转轴,叶轮包括一个正向叶轮和一个反向叶轮,后一个叶轮上的叶片进口以前一个叶轮上的叶片出口条件进行设计,在转轴半径小的一段设有主动齿轮,在主动齿轮外啮合有传动齿轮,在其中一个叶轮的内壁上设有齿条,齿条与传动齿轮啮合,传动齿轮通过连接轴与泵体连接,转轴半径大的一段通过花键与另一个叶轮的内壁连接,本发明中一个增压单元就是由一个正向叶轮和一个反向叶轮构成,在工作时,正向叶轮与反向叶轮的转动方向相反,构成对旋式叶轮组,正、反两个方向的叶轮同时做功,因此现在的一个增压单元的功率相当于传统的两个增压单元的功率,使得油气混输泵效率得到提高。(The invention discloses a single-shaft two-way transmission oil-gas mixing transmission pump, which comprises a pump body, impellers and a rotating shaft, wherein the impellers comprise a forward impeller and a reverse impeller, the blade inlet of the latter impeller is designed under the condition of the blade outlet of the former impeller, a section with small radius of the rotating shaft is provided with a driving gear, a transmission gear is meshed outside the driving gear, the inner wall of one impeller is provided with a rack, the rack is meshed with the transmission gear, the transmission gear is connected with the pump body through a connecting shaft, and a section with large radius of the rotating shaft is connected with the inner wall of the other impeller through a spline. The efficiency of the oil-gas mixed transportation pump is improved.)

1. The utility model provides a unipolar bidirectional drive's oil-gas multiphase pump, includes the pump body to and be located impeller and the pivot in the pump body, its characterized in that: the impeller comprises a forward impeller and a reverse impeller, the blade outlet condition of a blade inlet on the latter impeller is designed on the former impeller, the rotating shaft is in a shape like a Chinese character 'tu', a section with a small radius of the rotating shaft is provided with a driving gear, a transmission gear is meshed outside the driving gear, a rack is arranged on the inner wall of one impeller, the rack is meshed with the transmission gear, the transmission gear is connected with the pump body through a connecting shaft, and a section with a large radius of the rotating shaft is connected with the inner wall of the other impeller through a spline.

2. The single-shaft bidirectional transmission oil-gas mixture transfer pump as claimed in claim 1, characterized in that: the transmission gear is a multi-stage transmission gear, the multi-stage transmission gear is composed of a first-stage transmission gear and a second-stage transmission gear which are concentric, the first-stage transmission gear is meshed with the driving gear, the second-stage transmission gear is meshed with the rack, and the diameter of the first-stage transmission gear is smaller than that of the second-stage transmission gear.

3. The single-shaft bidirectional transmission oil-gas mixture transfer pump as claimed in claim 2, characterized in that: the two primary transmission gears are respectively arranged on two sides of the secondary transmission gear and meshed with the driving gear, and grooves for the secondary transmission gears to pass through are formed in the circumference of the driving gear.

4. The single-shaft bidirectional transmission oil-gas mixture transmission pump according to any one of claims 1 to 3, characterized in that: two racks are symmetrically arranged in the impeller, two driving gears are arranged on the section with the small radius of the rotating shaft, and one driving gear is connected with one rack correspondingly.

Technical Field

The invention relates to an oil-gas mixed transportation pump, in particular to a single-shaft bidirectional transmission 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 single-shaft bidirectional transmission 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: the utility model provides a unipolar bidirectional drive's oil-gas multiphase pump, includes the pump body to and be located the impeller and the pivot of pump body, wherein the impeller includes a forward impeller and a reverse impeller, and the blade export condition on the preceding impeller of the blade import on the last impeller of back designs, the pivot is "protruding" font one section that the pivot radius is little is equipped with the driving gear engaged outside has drive gear, is equipped with the rack on the inner wall of one of them impeller, rack and drive gear meshing, drive gear passes through connecting axle and pump body coupling, the big section of pivot radius passes through the inner wall connection of spline and another impeller.

Further improvement: the transmission gear is a multi-stage transmission gear, the multi-stage transmission gear is composed of a first-stage transmission gear and a second-stage transmission gear which are concentric, the first-stage transmission gear is meshed with the driving gear, the second-stage transmission gear is meshed with the rack, and the diameter of the first-stage transmission gear is smaller than that of the second-stage transmission gear.

Further improvement: the two primary transmission gears are respectively arranged on two sides of the secondary transmission gear and meshed with the driving gear, and grooves for the secondary transmission gears to pass through are formed in the circumference of the driving gear.

Further improvement: two racks are symmetrically arranged in the impeller, two driving gears are arranged on the section with the small radius of the rotating shaft, and one driving gear is connected with one rack correspondingly.

The invention has the advantages that: firstly, the original guide vane is replaced by a reverse impeller, the original impeller is a forward impeller, the inlet of the latter impeller is designed according to the outlet condition of the former impeller, so that the guide vane is omitted, at the moment, one pressurizing unit is composed of the forward impeller and the reverse impeller, then one impeller is driven to rotate forward by the rotation of a rotating shaft, the other impeller is driven to rotate reversely by the meshing transmission of a driving gear and a transmission gear, the rotating directions of the forward impeller and the reverse impeller are opposite, a contra-rotating impeller group is formed, so that when the mixed delivery 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 existing pressurizing unit is equivalent to the power of the two traditional pressurizing units, and under the same axial length of the unit, the power of the mixed delivery pump is twice as the original power, or under the condition of ensuring the same pump output power, the axial length of the unit is greatly shortened, so that the axial force is reduced, the sealing requirement is reduced, the axial vibration is reduced, the noise is reduced, the operation is safer and more reliable compared with the traditional mixed transportation pump, the stable operation of the pump unit is well ensured, and in addition, the counter-rotating impeller set can be designed to have higher rotating speed than the traditional impeller, so that the efficiency of the oil-gas mixed transportation pump is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a side view of the present invention.

FIG. 3 is a schematic diagram of the present invention using a multi-stage transmission gear.

Detailed Description

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

As shown in the figure, a unipolar double-direction drive's oil-gas mixture transport pump, including the pump body to and be located impeller and pivot 3 in the pump body 1, wherein impeller 2 includes a forward impeller 21 and a reverse impeller 22, and the blade export condition on the preceding impeller 2 of the blade import on the last impeller 2 designs, pivot 3 is "protruding" font 3 the little section of 3 radiuses of pivot is equipped with driving gear 4 the outer meshing of driving gear 4 has drive gear 5, is equipped with rack 7 on one of them impeller 2's the inner wall, rack 7 and the meshing of drive gear 5, drive gear 5 is connected with the pump body 1 through connecting axle 6, 3 big section of radius of pivot is through the inner wall connection of spline 31 with another impeller 2.

The transmission gear 5 is a multi-stage transmission gear which is composed of a first-stage transmission gear 51 and a second-stage transmission gear 52 which are concentric, the first-stage transmission gear 51 is meshed with the driving gear 4, the second-stage transmission gear 52 is meshed with the rack 7, and the diameter of the first-stage transmission gear 51 is smaller than that of the second-stage transmission gear 52; the number of the first-stage transmission gears 51 is two, the first-stage transmission gears 51 are respectively arranged on two sides of the second-stage transmission gear 52 and meshed with the driving gear 4, and a groove 41 for the second-stage transmission gear 52 to pass through is formed in the circumference of the driving gear 4.

Two racks 7 are symmetrically arranged in the impeller 2, two driving gears 4 are arranged on a section of the rotating shaft 3 with a small radius, and one driving gear 4 is connected with one rack 7 correspondingly.

The working principle is as follows: firstly, the blade inlet of the next impeller 2 is designed according to the blade outlet condition of the previous impeller 2, so that 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, when the rotating shaft 3 is connected with the forward impeller 21 through the spline 31, the rack 7 is arranged on the reverse impeller 22, then the end with the small radius on the rotating shaft 3 is meshed with the driving gear 4 and the transmission gear 5 and is connected with the rack 7 on the reverse impeller 22, when the electric motor 10 is in work, the rotating shaft 3 is driven to rotate by the motor 10, the rotating shaft 3 drives the forward impeller 21 to rotate forwardly through the spline 31, after the rotating shaft 3 is driven by the driving gear 4 and the transmission gear 5, the reverse impeller 22 is driven to rotate reversely, and thus one rotating shaft 3 simultaneously drives, and the rotation directions of the two impellers 2 are opposite, so that the two forward and backward impellers 2 do work simultaneously, and the efficiency of the mixing pump is improved.

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.