阅读说明：本技术 一种适用于538系列电潜泵的高效宽幅叶导轮 (High-efficient broad width leaf guide pulley suitable for 538 series electric submersible pump ) 是由 蒋召平 李越 张光一 于法浩 吴华晓 李海涛 于 2020-09-11 设计创作，主要内容包括：本发明提供一种适用于538系列电潜泵的高效宽幅叶导轮,叶轮与导壳间隙配合,叶轮上本体、叶片和叶轮下本体由上至下依次一体设置在连接轴上,叶片以叶轮上本体和叶轮下本体的中心线为基准呈环形均匀分布,连接轴采用中空结构,在叶轮上本体与连接轴之间形成一上本体槽,叶片和叶轮下本体之间形成一弧形槽,上本体槽与弧形槽相连通；上壳体和下壳体均采用中空结构,在下壳体内一体设置导叶轴,导叶设置在导叶轴上,导叶以壳体中心线为基准呈环形均匀分布,导叶轴采用中空结构,下壳体的内壁和导叶轴的外壁形成一弧线槽。该叶导轮具有更宽幅的流量高效工作区,减少了电潜泵叶导轮种类,提高了电泵管理效率,降低了库存及资金占用。(The invention provides a high-efficiency wide-width blade guide wheel suitable for 538 series electric submersible pumps, wherein an impeller is in clearance fit with a guide shell, an upper body of the impeller, blades and a lower body of the impeller are sequentially and integrally arranged on a connecting shaft from top to bottom, the blades are uniformly distributed in an annular shape by taking the central lines of the upper body of the impeller and the lower body of the impeller as the reference, the connecting shaft adopts a hollow structure, an upper body groove is formed between the upper body of the impeller and the connecting shaft, an arc-shaped groove is formed between the blades and the lower body of the impeller, and the upper body groove is communicated with the arc-shaped groove; the upper shell and the lower shell are both of a hollow structure, a guide vane shaft is integrally arranged in the lower shell, the guide vanes are arranged on the guide vane shaft and are uniformly distributed in an annular mode on the basis of the central line of the shell, the guide vane shaft is of a hollow structure, and an arc wire groove is formed in the inner wall of the lower shell and the outer wall of the guide vane shaft. The impeller guide wheel has a wider flow efficient working area, the types of the impeller guide wheel of the electric submersible pump are reduced, the management efficiency of the electric pump is improved, and the inventory and the fund occupation are reduced.)

1. The utility model provides a high-efficient broad width leaf guide pulley suitable for 538 series electric submersible pump which characterized in that: comprises an impeller and a guide shell, the impeller is in clearance fit with the guide shell,

the impeller comprises a connecting shaft, an impeller upper body, an impeller lower body and blades, wherein the impeller upper body, the blades and the impeller lower body are sequentially and integrally arranged on the connecting shaft from top to bottom, the blades are uniformly distributed in an annular manner by taking the central lines of the impeller upper body and the impeller lower body as a reference, the connecting shaft adopts a hollow structure, an upper body groove is formed between the impeller upper body and the connecting shaft, an arc-shaped groove is formed between the blades and the impeller lower body, the upper body groove is communicated with the arc-shaped groove, the side edges of the arc-shaped groove are respectively a first arc part and a second arc part, the head end of the first arc part forms a first transition arc with the radius of R1, the tail end of the first transition arc adopts a first straight line tangent to the end point of the first transition arc, and the head end of the second arc part forms a second transition arc with the radius of R2, the tail end of the second transition arc adopts a second straight line tangent to the end point of the second transition arc;

the guide shell comprises an upper shell, a lower shell, a guide vane shaft and guide vanes, wherein the upper shell and the lower shell are integrally arranged to form a shell, the upper shell and the lower shell are both of a hollow structure, the guide vane shaft is integrally arranged in the lower shell, the guide vanes are arranged on the guide vane shaft, the guide vanes are uniformly distributed in an annular shape by taking the central line of the shell as a reference, the guide vane shaft is of a hollow structure, the inner wall of the lower shell and the outer wall of the guide vane shaft form an arc groove, the arc groove comprises an upper arc part and a lower arc part, the head end of the upper arc part forms a third transition arc with the radius of R3, the tail end of the third transition arc adopts a third straight line tangent to the endpoint of the third transition arc, the tail end of the third straight line forms a fourth transition arc with the radius of R4, and the arc orientations of the third transition arc and the fourth transition arc are oppositely arranged, the head end of the lower arc part forms a fifth transition arc with the radius of R5, the tail end of the fifth transition arc adopts a fourth straight line tangent to the end point of the fifth transition arc, the tail end of the fourth straight line forms a sixth transition arc with the radius of R6, and the arc directions of the fifth transition arc and the sixth transition arc are opposite.

2. A high efficiency wide width vane guide wheel suitable for a 538 series electric submersible pump as claimed in claim 1 wherein: the quantity of blade is 8, and every blade projection is the arc on radial cross section, the head end tangent line of blade with the centre of a circle of body on the impeller is here the contained angle between the radial ray for blade import laid angle alpha 3, and the value of blade import laid angle alpha 3 is 35-41, the tail end tangent line of blade with the contained angle between the centre of a circle of body on the impeller here radial ray is blade export laid angle alpha 4, and the value of blade export laid angle alpha 4 is 49-55, and above-mentioned two radial rays are in the contained angle of the centre of a circle department of body on the impeller is blade contained angle gamma 1, and the value of blade contained angle gamma 1 is 75.

3. A high efficiency wide width impeller suitable for use in 538 series electric submersible pumps as claimed in claim 2 wherein: the thickness of the blade is uniformly increased from 1.5mm at the upper body of the impeller to 1.9mm at the lower body of the impeller.

4. A high efficiency wide width vane guide wheel suitable for a 538 series electric submersible pump as claimed in claim 1 wherein: the value of R1 is 17.2mm, the included angle between the first straight line and the vertical direction is alpha 1, the value of alpha 1 is 63 degrees, the value of R2 is 41.5mm, the included angle between the second straight line and the vertical direction is alpha 2, the value of alpha 2 is 75 degrees, the straight line distance between the tail end of the first straight line and the tail end of the second straight line is impeller outlet width a1, and the value of a1 is 10.25 mm.

5. A high efficiency wide width vane guide wheel suitable for a 538 series electric submersible pump as claimed in claim 1 wherein: the diameter phi 1 of the outlet of the impeller is 104mm, and the diameter phi 2 of the outer spigot of the impeller is 57.5 mm.

6. A high efficiency wide width impeller suitable for use in 538 series electric submersible pumps as claimed in claim 2 wherein: the quantity of stator is 7, and every stator projection is the arc on radial cross section, the head end tangent line of stator with the centre of a circle of casing is here the contained angle between the radial ray for the stator export angle beta 4 down, and the value of stator export angle beta 4 beta 3 is 0, the tail end tangent line of stator with the contained angle of the centre of a circle of casing is here between the radial ray is the stator import angle beta 3 of laying down, and the value of stator import angle beta 3 of laying is 78, and above-mentioned two radial rays are in the contained angle of the centre of a circle department of casing is stator cornerite gamma 2 down, and stator cornerite gamma 2 value is 26.

7. A high-efficiency wide-width vane guide wheel suitable for a 538 series electric submersible pump as claimed in claim 6, wherein: the thickness of stator from with 1.65mm of the tail end outer wall department of stator shaft gradually increases to three fifths of the total length of arc wire casing, the thickness of stator here is 2.5mm, reduces to again by 2.5mm gradually 1.65mm of the head end outer wall department of stator shaft.

8. A high efficiency wide width vane guide wheel suitable for a 538 series electric submersible pump as claimed in claim 1 wherein: the value of R3 is 26.7mm, the included angle beta 1 between the third straight line and the horizontal direction, the value of beta 1 is 48 degrees, the value of R4 is 4.7mm, the value of R5 is 10.3mm, the included angle beta 2 between the fourth straight line and the horizontal direction, the value of beta 2 is 30 degrees, and the value of R6 is 19.8 mm.

9. A high efficiency wide width vane guide wheel suitable for a 538 series electric submersible pump as claimed in claim 1 wherein: the range of the high-efficiency working area of the high-efficiency wide-width guide wheel at 50Hz is 200-850m³And d, the rated point pump efficiency of the high-efficiency wide-width blade guide wheel is 64 percent.

10. Use of a high-efficiency wide-width vane guide wheel suitable for a 538 series electric submersible pump as claimed in any one of claims 1 to 9 in the 538 series electric submersible pump.

Technical Field

The invention relates to the technical field of electric submersible pump impeller guide wheels, in particular to a high-efficiency wide-width impeller guide wheel suitable for a 538 series electric submersible pump.

Background

The mechanical oil production well electric submersible pump lifting process technology is a main production mode of offshore oil fields in China, due to inaccurate prenatal prediction of oil field capacity and large production liquid change in actual production, a conventional 538 series electric pump unit cannot meet the requirement of production of extract liquid due to the fact that a flow high-efficiency working area is narrow, pump replacement operation is often caused by non-failure measures, and operation cost and oil production loss are brought to oil field production.

Disclosure of Invention

The invention overcomes the defects in the prior art, the conventional 538 series electric pump unit can not meet the requirement of extract production due to the narrow flow high-efficiency working area, and often causes non-fault measures to change the pump operation, which brings operation cost and oil production loss to oil field production.

The purpose of the invention is realized by the following technical scheme.

A high-efficiency wide-width impeller guide wheel suitable for a 538 series electric submersible pump comprises an impeller and a guide shell, wherein the impeller is in clearance fit with the guide shell,

the impeller comprises a connecting shaft, an impeller upper body, an impeller lower body and blades, wherein the impeller upper body, the blades and the impeller lower body are sequentially and integrally arranged on the connecting shaft from top to bottom, the blades are uniformly distributed in an annular manner by taking the central lines of the impeller upper body and the impeller lower body as a reference, the connecting shaft adopts a hollow structure, an upper body groove is formed between the impeller upper body and the connecting shaft, an arc-shaped groove is formed between the blades and the impeller lower body, the upper body groove is communicated with the arc-shaped groove, the side edges of the arc-shaped groove are respectively a first arc part and a second arc part, the head end of the first arc part forms a first transition arc with the radius of R1, the tail end of the first transition arc adopts a first straight line tangent to the end point of the first transition arc, and the head end of the second arc part forms a second transition arc with the radius of R2, the tail end of the second transition arc adopts a second straight line tangent to the end point of the second transition arc;

the guide shell comprises an upper shell, a lower shell, a guide vane shaft and guide vanes, wherein the upper shell and the lower shell are integrally arranged to form a shell, the upper shell and the lower shell are both of a hollow structure, the guide vane shaft is integrally arranged in the lower shell, the guide vanes are arranged on the guide vane shaft, the guide vanes are uniformly distributed in an annular shape by taking the central line of the shell as a reference, the guide vane shaft is of a hollow structure, the inner wall of the lower shell and the outer wall of the guide vane shaft form an arc groove, the arc groove comprises an upper arc part and a lower arc part, the head end of the upper arc part forms a third transition arc with the radius of R3, the tail end of the third transition arc adopts a third straight line tangent to the endpoint of the third transition arc, the tail end of the third straight line forms a fourth transition arc with the radius of R4, and the arc orientations of the third transition arc and the fourth transition arc are oppositely arranged, the head end of the lower arc part forms a fifth transition arc with the radius of R5, the tail end of the fifth transition arc adopts a fourth straight line tangent to the end point of the fifth transition arc, the tail end of the fourth straight line forms a sixth transition arc with the radius of R6, and the arc directions of the fifth transition arc and the sixth transition arc are opposite.

The quantity of blade is 8, and every blade projection is the arc on radial cross section, the head end tangent line of blade with the centre of a circle of body on the impeller is here the contained angle between the radial ray for blade import laid angle alpha 3, and the value of blade import laid angle alpha 3 is 35-41, the tail end tangent line of blade with the contained angle between the centre of a circle of body on the impeller here radial ray is blade export laid angle alpha 4, and the value of blade export laid angle alpha 4 is 49-55, and above-mentioned two radial rays are in the contained angle of the centre of a circle department of body on the impeller is blade contained angle gamma 1, and the value of blade contained angle gamma 1 is 75.

The thickness of the blade is uniformly increased from 1.5mm at the upper body of the impeller to 1.9mm at the lower body of the impeller.

The value of R1 is 17.2mm, the included angle between the first straight line and the vertical direction is alpha 1, the value of alpha 1 is 63 degrees, the value of R2 is 41.5mm, the included angle between the second straight line and the vertical direction is alpha 2, the value of alpha 2 is 75 degrees, the straight line distance between the tail end of the first straight line and the tail end of the second straight line is impeller outlet width a1, and the value of a1 is 10.25 mm.

The diameter phi 1 of the impeller outlet is 104mm, and the diameter phi 2 of the impeller outer spigot (impeller inlet) is 57.5 mm.

The quantity of stator is 7, and every stator projection is the arc on radial cross section, the head end tangent line of stator with the centre of a circle of casing is here the contained angle between the radial ray for the stator export angle beta 4 down, and the value of stator export angle beta 4 beta 3 is 0, the tail end tangent line of stator with the contained angle of the centre of a circle of casing is here between the radial ray is the stator import angle beta 3 of laying down, and the value of stator import angle beta 3 of laying is 78, and above-mentioned two radial rays are in the contained angle of the centre of a circle department of casing is stator cornerite gamma 2 down, and stator cornerite gamma 2 value is 26.

The thickness of stator from with 1.65mm of the tail end outer wall department of stator shaft gradually increases to three fifths of the total length of arc wire casing, the thickness of stator here is 2.5mm, reduces to again by 2.5mm gradually 1.65mm of the head end outer wall department of stator shaft.

The value of R3 is 26.7mm, the included angle beta 1 between the third straight line and the horizontal direction, the value of beta 1 is 48 degrees, the value of R4 is 4.7mm, the value of R5 is 10.3mm, the included angle beta 2 between the fourth straight line and the horizontal direction, the value of beta 2 is 30 degrees, and the value of R6 is 19.8 mm.

The range of the high-efficiency working area of the high-efficiency wide-width guide wheel at 50Hz is 200-850m³And d, the rated point pump efficiency of the high-efficiency wide-width blade guide wheel is 64 percent.

The invention has the beneficial effects that: the vane guide wheel has a wider flow efficient working area, the types of vane guide wheels of the electric submersible pump are reduced, the management efficiency of the electric pump is improved, and the inventory and the fund occupation are reduced; the method avoids inaccurate prediction of the oil reservoir liquid production amount before oil field production and operation cost and oil production loss caused by later pump replacement of the extract, improves production timeliness, saves energy and reduces emission; has better applicability to the production of gas-containing and sand-containing well conditions.

Drawings

FIG. 1 is a schematic view of the structure of an impeller according to the present invention;

FIG. 2 is a schematic structural view of a guide shell according to the present invention;

FIG. 3 is a schematic axial sectional view of an impeller according to the present invention;

FIG. 4 is a schematic radial cross-sectional view of a blade according to the present invention;

FIG. 5 is a schematic structural view of an axial cross section of a housing of the guide shell of the present invention;

FIG. 6 is a structural schematic view of a radial section of the casing of the guide vane of the present invention;

in the figure: 1 is an impeller; 2 is the upper body of the impeller; 3 is a blade; 4 is a guide shell; 5 is a lower shell; 6 is a guide vane; 7 is a first curve part; 8 is a second curve portion; 9 is an upper arc part; 10 is a lower arc part; 11 is a lower body of the impeller; 12 is a connecting shaft; 13 is an upper shell; 14 is a guide vane shaft;

for a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples.

Example one

A high-efficiency wide-width impeller guide wheel suitable for a 538 series electric submersible pump comprises an impeller 1 and a guide shell 4, wherein the impeller 1 is in clearance fit with the guide shell 4,

the impeller 1 comprises a connecting shaft 12, an impeller upper body 2, an impeller lower body 11 and blades 3, the impeller upper body 2, the blades 3 and the impeller lower body 11 are sequentially and integrally arranged on the connecting shaft 12 from top to bottom, the blades 3 are uniformly distributed in an annular shape by taking the central lines of the impeller upper body 2 and the impeller lower body 11 as the reference, the connecting shaft 12 adopts a hollow structure, an upper body groove is formed between the impeller upper body 2 and the connecting shaft 12, an arc-shaped groove is formed between the blades 3 and the impeller lower body 11 and is communicated with the arc-shaped groove, the side edges of the arc-shaped groove are respectively a first arc part 7 and a second arc part 8, the head end of the first arc part 7 forms a first transition arc with the radius of R1, the tail end of the first transition arc adopts a first straight line tangent to the endpoint of the first transition arc, the head end of the second arc part 8 forms a second transition arc with the radius of R2, the tail end of the second transition arc adopts a second straight line tangent to the end point of the second transition arc;

the guide shell 4 comprises an upper shell 13, a lower shell 5, a guide vane shaft 14 and a guide vane 6, wherein the upper shell 13 and the lower shell 5 are integrally arranged to form a shell, the upper shell 13 and the lower shell 5 both adopt a hollow structure, the guide vane shaft 14 is integrally arranged in the lower shell 5, the guide vane 6 is arranged on the guide vane shaft 14, the guide vane 6 is uniformly distributed in an annular shape by taking the central line of the shell as the reference, the guide vane shaft 14 adopts a hollow structure, the inner wall of the lower shell 5 and the outer wall of the guide vane shaft 14 form an arc line groove, the arc line groove comprises an upper arc line part 9 and a lower arc line part 10, the head end of the upper arc line part 9 forms a third transition arc with the radius of R3, the tail end of the third transition arc line adopts a third straight line tangent to the endpoint of the third transition arc line, the tail end of the third straight line forms a fourth transition arc with the radius of R4, the arc directions of the third transition arc line and the fourth transition arc line are oppositely arranged, the head end of the lower arc line part 10 forms a fifth transition arc line with the radius of R5, the tail end of the fifth transition circular arc adopts a fourth straight line tangent to the end point of the fifth transition circular arc, the tail end of the fourth straight line forms a sixth transition circular arc with the radius of R6, and the arc directions of the fifth transition circular arc and the sixth transition circular arc are opposite.

Example two

On the basis of the first embodiment, the number of the blades 3 is 8, the projection of each blade 3 on the radial cross section is arc, the included angle between the tangent line at the head end of each blade 3 and the center of the body 2 on the impeller at the radial ray is a blade inlet installation angle alpha 3, the value of the blade inlet installation angle alpha 3 is 35-41 degrees, the included angle between the tangent line at the tail end of each blade 3 and the center of the body 2 on the impeller at the radial ray is a blade outlet installation angle alpha 4, the value of the blade outlet installation angle alpha 4 is 49-55 degrees, the included angle between the two radial rays at the center of the body 2 on the impeller is a blade wrap angle gamma 1, and the value of the blade wrap angle gamma 1 is 75 degrees.

The thickness of the blades 3 increases uniformly from 1.5mm at the upper body 2 of the impeller to 1.9mm at the lower body 11 of the impeller.

The value of R1 is 17.2mm, the included angle between the first straight line and the vertical direction is alpha 1, the value of alpha 1 is 63 degrees, the value of R2 is 41.5mm, the included angle between the second straight line and the vertical direction is alpha 2, the value of alpha 2 is 75 degrees, the straight line distance between the tail end of the first straight line and the tail end of the second straight line is impeller outlet width a1, and the value of a1 is 10.25 mm.

The diameter phi 1 of the impeller outlet is 104mm, and the diameter phi 2 of the impeller outer spigot (impeller inlet) is 57.5 mm.

EXAMPLE III

On the basis of the second embodiment, the number of the guide vanes 6 is 7, the projection of each guide vane 6 on the radial section is arc, the included angle between the tangent line at the head end of the guide vane 6 and the radial ray at the center of the lower shell 5 is the guide vane outlet installation angle β 4, the value of the guide vane outlet installation angle β 4 β 3 is 0 °, the included angle between the tangent line at the tail end of the guide vane and the radial ray at the center of the lower shell 5 is the guide vane inlet installation angle β 3, the value of the guide vane inlet installation angle β 3 is 78 °, the included angle between the two radial rays at the center of the lower shell 5 is the guide vane wrap angle γ 2, and the value of the guide vane wrap angle γ 2 is 26 °.

The thickness of the guide vane 6 is gradually increased to three fifths of the total length of the arc line groove from 1.65mm at the outer wall of the tail end of the guide vane shaft 14, the thickness of the guide vane 6 is 2.5mm, and the thickness is gradually reduced to 1.65mm at the outer wall of the head end of the guide vane shaft 14 from 2.5 mm.

The value of R3 is 26.7mm, the included angle beta 1 between the third straight line and the horizontal direction, the value of beta 1 is 48 degrees, the value of R4 is 4.7mm, the value of R5 is 10.3mm, the included angle beta 2 between the fourth straight line and the horizontal direction, the value of beta 2 is 30 degrees, and the value of R6 is 19.8 mm.

The range of the high-efficiency working area of the high-efficiency wide-width guide wheel at 50Hz is 200-850m³And d, the rated point pump efficiency of the high-efficiency wide-width blade guide wheel is 64 percent.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.