CN102384111B - Gas-liquid mixed conveying device with double layers of blades - Google Patents
Gas-liquid mixed conveying device with double layers of blades Download PDFInfo
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- CN102384111B CN102384111B CN 201110402200 CN201110402200A CN102384111B CN 102384111 B CN102384111 B CN 102384111B CN 201110402200 CN201110402200 CN 201110402200 CN 201110402200 A CN201110402200 A CN 201110402200A CN 102384111 B CN102384111 B CN 102384111B
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Abstract
The invention relates to a gas-liquid mixed conveying device with double layers of blades, and mainly aims to solve the problem that the gas-liquid ratio of liquid in a well at the inlet of the conventional electrical submersible pump is high, which impacts the performance of the electrical submersible pump. The gas-liquid mixed conveying device is characterized in that an upper bearing seat (3),a compress pipe (4), an upper guide shell (7) and a lower guide shell (10) are arranged between an upper joint (1) and a lower joint (12) in a housing (9) from the top down in sequence; a lower bearing seat (26) is arranged in the lower joint (12); a plurality of impellers (8) are arranged in the upper and the lower guide shells (7 and 10); shafts (2) are supported on the upper and the lower bearing seats (3 and 26) through bearings; after the shafts (2) penetrates the upper and the lower guide shells (7 and 10) and the impellers (8), two ends of each shaft (2) are fixed through a shaft sleeve (11); and a locking device (6) is further connected to the outer side in the middle of the shaft (2). The gas-liquid mixed conveying device provided by the invention can effectively damage the generation of gas accumulation and ensure gas to be dissolved in liquid, so as to ensure the stable property of the electrical submersible pump.
Description
Technical field
The present invention relates to the field, oil field, specifically a kind of twi-tier blade gas-liquid delivery device that is used with submersible electric pump.
Background technique
In the middle of the petroleum production mode of various artificial lifts, adopting the submersible electric pump system is one of effective mode, the restriction but the application of submersible electric pump system is had ready conditions, for example most low discharge capacity submersible electric pumps all require entry well liquid gas liquid ratio to be lower than 5%, even high discharge capacity submersible electric pump, the gas liquid ratio of entry well liquid generally can not be higher than 10%, when air content is higher than this value, cavitation erosion increases the weight of in the pump housing, even gas lock takes place, and has a strong impact on pump performance and life-span.But along with constantly carrying out of petroleum production, the oil well quantity that the production fluid amount is low, air content is big constantly increases, if the submersible electric pump system does not take appropriate measures, it can be applied in such oil well, then the living space of submersible electric pump system will seriously be pushed.For the way that reduces entry well liquid gas liquid ratio deaerator is installed in the submersible electric pump ingress normally at present, but deaerator can only be isolated a part of gas, can not make well liquid reach the requirement of submersible electric pump fully, simultaneously, the isolated gas of deaerator is finally discharged outside the well by sleeve pipe, can pollute environment.
Summary of the invention
Influence the deficiency of the performance of submersible electric pump in order to overcome existing submersible electric pump entry well liquid gas liquid ratio height, the invention provides a kind of twi-tier blade gas-liquid delivery device, this twi-tier blade gas-liquid delivery device can effectively destroy the generation that gas gathers, gas is dissolved in liquid, thereby guarantees the stable performance of submersible electric pump.
Technological scheme of the present invention is: a kind of twi-tier blade gas-liquid delivery device, comprise upper and lower joint, and upper and lower joint external screw-thread is connected with housing, be disposed with upper bearing bracket from top to bottom between the upper and lower joint of described enclosure interior, compress pipe, on lead shell, lead shell down, lower contact inside is provided with step, the upper and lower shell inside of leading is provided with several impellers, described upper and lower bearing support has axle by bearings, the outside of axle is provided with axle sleeve, axle pass upper and lower lead shell and impeller after its two ends fixed by axle sleeve, the axle middle part outside also is connected with locking device;
Described impeller by wheel hub, upper cover plate, lower cover plate, and some groups of blades form, every group of blade is made up of two-layer blade, wherein the impeller lower end is parallel and axial blade axial direction, and the upper end is the runoff blade of vertical and axial direction, and two-layer blade is staggered; Described upper cover plate and lower cover plate are connected the wheel hub outside, and have the impact opening that several are parallel to the impeller medial axis on the upper cover plate;
The described upper and lower shell of leading is provided with spiral vane;
Described locking device by two semi-rings, go up lock sleeve, lock sleeve, locking double-screw bolt are formed down, the stepped semi-ring of outer surface is enclosed within an axle outside, upper and lower lock sleeve be enclosed within the semi-ring outside after the locking screw male screw is connected.
The entrance inclination angle of described axial blade is 20 ± 5 °, thickness is 2-5mm, be 35 ± 5 ° by axial blade entrance limit to the angle of pivoting the runoff exit edge of blade, the runoff blade outlet angle is 45 ± 5 °, is 20 ± 5mm by the axial blade Inlet cone angle to the total height of runoff blade outlet angle.
The present invention has following beneficial effect: owing to take such scheme, when well liquid enters this twi-tier blade gas-liquid delivery device, interaction by twi-tier blade, can effectively destroy the generation that gas gathers, improve the gas ability of taking of corresponding product, when this product is tested, record suction port and go out gas liquid ratio and be up to 57%, strengthen the Electric Submersible Pump Unit application area, and guarantee the stable performance of oil-immersed pump.
Description of drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the plan view of impeller;
Fig. 3 is the plan view of impeller;
Fig. 4 is the sectional view of leading shell;
Fig. 5 is the sectional view of locking device.
1-upper connection among the figure, the 2-axle, the 3-upper bearing bracket, 4-compresses pipe, the 5-semi-ring, the 6-locking device is led shell on the 7-, the 8-impeller is led shell under the 9-housing, 10-, the 11-axle sleeve, 12-lower contact, 13-spline housing, 14-runoff blade, 15-axial blade, the 16-impact opening, 17-wheel hub, 18-upper cover plate, 19-runoff district, the 20-transition zone, 21-lower cover plate, 22-axial flow district, the last lock sleeve of 23-, lock sleeve under the 24-, 25-locks double-screw bolt, 26-step, 27-semi-ring.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done furtherly-Ming:
Extremely shown in Figure 5 by Fig. 1, a kind of twi-tier blade gas-liquid delivery device, comprise, lower contact (1,12), on, lower contact (1,12) inside is cavity, the outside is provided with screw thread, on, lower contact (1,12) is connected with housing 9 by its external screw-thread, on described housing 9 inside, lower contact (1,12) be disposed with bearing support 3 between from top to bottom, compress pipe 4, on lead shell 7, under lead shell 10, above-mentioned upper connection 1, lower contact 12, bearing support 3, compress pipe 4, on lead shell 7, under lead the common standing parts that form of shell 10, on, lower contact (1,12) above-mentioned parts are compressed, make its play up and down.On lead shell 7, under lead shell 10 inside and be provided with several impellers 8, lower contact 12 inside are provided with step 26, described upper bearing bracket 3 and step 26 have axle 2 by bearings, there is spline at the two ends of axle 2, the lower end is connected with spline housing 13, the outside of axle 2 is provided with axle sleeve 11, it is fixing by axle sleeve 11 that axle 2 passes its two ends, impeller 8 back, the outside, axle 2 middle parts also is connected with locking device 6, locking device 6 all has the axle sleeve that is enclosed within axle 2 outsides up and down, be provided with two following semi-rings 27 in the bottom outside groove of axle 2, be enclosed within the outside of axle 2 after following semi-ring 27 lumps together, following semi-ring 27 outsides are compressed by axle sleeve 11.Axle sleeve is divided into some sections, and the wheel hub 17 of space and locking device 6, impeller 8, down semi-ring 27 is enclosed within the outside of axle 2, and axial compression forms one, can be along axle play about in the of 2.Axle 2 is provided with keyway, fixes impeller 8, axle sleeve 13 by key, has determined the angle between impeller 8, axle sleeve 13 and the axle 2, and impeller 8, axle sleeve 13 can together be rotated with axle 2.Above-mentioned axle 2, axle sleeve 11, impeller 8, locking device 6, semi-ring 27, spline housing 13 common formation rotating parts can rotate jointly.
Described impeller 8 adopts the plural serial stage structure, progression is generally the 30-50 level, impeller 8 by wheel hub 17, upper cover plate 18, lower cover plate 21, and some groups of blades form, as preferably, blade pass is crossed and is made as the 6-7 group, and every group of blade is made up of two-layer blade, and wherein impeller 8 lower ends are that entry end is parallel and axial blade 15 axial direction, the upper end is that outlet end is the runoff blade 14 of vertical and axial direction, and two-layer blade is staggered; Described upper cover plate 18 is connected wheel hub 17 outsides with lower cover plate 21, and have the impact opening 16 that several are parallel to impeller 8 medial axis on the upper cover plate 18, the number of impact opening 16 is 6, along the circumferential direction evenly distribute, and its circumference is near the outward edge of impeller upper cover plate 18, the equal diameters of impact opening 16 is generally 4-6mm.Lower cover plate 18 is provided with the runner entrance, axial blade 15, runoff blade 14 constitute mixed delivery channel with impeller upper cover plate 18, lower cover plate 21 and impeller hub 17, the entrance inclination angle of described axial blade 15 is 20 ± 5 °, thickness is 2-5mm, be 35 ± 5 ° by axial blade 15 entrance limits to the angle of pivoting the runoff blade 14 outlet limits, runoff blade 14 exit angle are 45 ± 5 °, are 20 ± 5mm by axial blade 15 Inlet cone angles to the total height of runoff blade 14 exit angle.For convenience, blade can be divided into preceding, in and back three zones, then front end is runoff district 19, the middle part is transition zone 20, the rear end is axial flow district 22, takes the gas ability by the height of axial blade 15, the fluid of high gas-liquid ratio is given rise to the runoff district 19 of blade, avoid the entrance low pressure stage of runoff blade 14, improve the anti-gas lock ability of impeller; And by runoff blade 14 accelerating fluids, more high-lift to obtain; Two-layer blade is staggered, and the wake flow that utilizes axial blade 15 carries out pressure to the low pressure area of runoff blade 14 and replenishes, and increases the gas ability of taking of impeller 8.Because impact opening 16 is offered in the low pressure area position of blade, utilize leakage reversed flow destruction gas to gather, and further increase the gas ability of taking of impeller 8.
The described upper and lower shell (7,10) of leading is provided with spiral vane, and blade is meander configuration, and quantity is made as 11, and the entrance inclination angle of blade is set at 20-60 °, and vane thickness is 2-5mm, and blade outlet angle is set at 10-40 °.Upper and lowerly lead wheel hub 17 outsides that shell (7,10) is installed in impeller 8, impeller 8 can be in leading shell play up and down.
Described locking device 6 is made up of two semi-rings 5, last lock sleeve 23, following lock sleeve 24, locking double-screw bolt 25, semi-ring 5 is the hemicycle cylinder, and its outer surface is stepped, the position circumferencial direction of corresponding semi-ring 5 is provided with groove on the axle 2, two semi-rings 5 are enclosed within the groove outside of axle 2, and axle 2 outsides of establishing on the semi-ring 5 are provided with axle sleeve.Locking double-screw bolt 25 is provided with outside thread, last lock sleeve 23 is provided with internal thread with following lock sleeve 24, and last lock sleeve 23 tops are provided with inner convex platform, be enclosed within semi-ring 5 outsides after last lock sleeve 23, time lock sleeve 24 and locking double-screw bolt 25 are threaded, and compress semi-ring 5 by the inner convex platform on the last lock sleeve 23.This locking device adopts 5 carryings of two semi-rings by the axial force of the impeller 8 of axle sleeve 11 transmission, and passes to axle 2, and the groove on the utilization axle limits the axial position of two semi-rings 5 simultaneously; In order to prevent that two semi-rings 5 break away from, designed lock sleeve up and down, to limit the radial position of two semi-rings, and by limiting the size of lock sleeve, make that lock sleeve does not axially contact axle sleeve up and down, axially contact with axle sleeve but lock double-screw bolt 25 that lock sleeve does not bear the axial force of being transmitted by axle sleeve thereby make up and down, the locking of lock sleeve is according to hydraulic principle, comes anticreep by the current rotation directions.
During actual the use, the upper end of this twi-tier blade gas-liquid delivery device links to each other with submersible electric pump by bolt, the lower end links to each other with deaerator or protector by bolt, when well liquid enters this twi-tier blade gas-liquid delivery device through deaerator, impeller 8 self structure make impeller 8 can carry the higher well liquid of air content, will be than the gross blowhole fragmentation, and provide well to surge can; Provide the well liquid of kinetic energy to carry out water conservancy diversion and compression by the variation of leading the shell runner to process impeller 8, further improve delivery hydraulic pressure power, reduce bubble, owing to adopt leafy wheel construction, can be with the further refinement of bubble; In addition, owing to lead the pressure reduction between shell outlet and impeller eye, a small amount of conveying liquid is impacted through impeller hub 17 16 pairs of impeller eye products of impact opening with guide wheel spider creep, impeller upper cover plate 18, further prevent the generation that impeller eye gas gathers, improve the tolerance of taking of blade guiding wheel, can effectively destroy the generation that gas gathers.When this product is tested, record suction port and go out gas liquid ratio and be up to 57%.Use this twi-tier blade gas-liquid delivery device, can enlarge the using scope of submersible electric pump, be conducive to apply.
Claims (1)
1. twi-tier blade gas-liquid delivery device, comprise the upper connection (1) that housing (9) is inner, lower contact (12), it is characterized in that: the upper connection (1) that described housing (9) is inner, be disposed with upper bearing bracket (3) between the lower contact (12) from top to bottom, compress pipe (4), on lead shell (7), under lead shell (10), lower contact (12) inside is provided with step (26), on, under lead shell (7,10) inside is provided with several impellers (8), described upper bearing bracket (3) and step (26) have axle (2) by bearings, the outside of axle (2) is provided with axle sleeve (11), axle (2) passes, under lead shell (7,10) and its two ends, impeller (8) back fixing by axle sleeve (11), the outside, axle (2) middle part also is connected with locking device (6);
Described impeller (8) by wheel hub (17), upper cover plate (18), lower cover plate (21), and some groups of blades form, every group of blade is made up of two-layer blade, wherein impeller (8) lower end is parallel and axial blade (15) axial direction, the upper end is the runoff blade (14) of vertical and axial direction, and two-layer blade is staggered; Described upper cover plate (18) is connected wheel hub (17) outside with lower cover plate (21), and has the impact opening (16) that several are parallel to impeller (8) medial axis on the upper cover plate (18);
The described upper and lower shell (7,10) of leading is provided with spiral vane, and the entrance inclination angle of blade is 20-60 °, and exit angle is 10-40 °, and vane thickness is 2-5mm;
Described locking device (6) is made up of two semi-rings (5), last lock sleeve (23), following lock sleeve (24), locking double-screw bolt (25), described semi-ring (5) outer surface is stepped, and semi-ring (5) is enclosed within axle (2) outside, upper and lower lock sleeve (23,24) is enclosed within above-mentioned semi-ring (5) outside with locking double-screw bolt (25) after being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402200 CN102384111B (en) | 2011-12-06 | 2011-12-06 | Gas-liquid mixed conveying device with double layers of blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402200 CN102384111B (en) | 2011-12-06 | 2011-12-06 | Gas-liquid mixed conveying device with double layers of blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102384111A CN102384111A (en) | 2012-03-21 |
| CN102384111B true CN102384111B (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110402200 Active CN102384111B (en) | 2011-12-06 | 2011-12-06 | Gas-liquid mixed conveying device with double layers of blades |
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| CN (1) | CN102384111B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701098B (en) * | 2019-10-10 | 2020-12-29 | 中国海洋石油集团有限公司 | Wide-width efficient blade guide wheel suitable for 387-series submersible electric pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036447U (en) * | 1988-08-12 | 1989-04-26 | 孙明山 | Gas-liquid mixing pump |
| EP0348342A1 (en) * | 1988-06-23 | 1989-12-27 | GebràDer Sulzer Aktiengesellschaft | Centrifugal machine with opposing rotation impellers |
| CN1392346A (en) * | 1995-12-28 | 2003-01-22 | 法国石油研究所 | Multiple phase fluid pumping or compressing device with serial vanes |
| US6893207B2 (en) * | 2002-03-05 | 2005-05-17 | Baker Hughes Incorporated | Impeller for gassy well fluid |
| CN2874073Y (en) * | 2005-12-20 | 2007-02-28 | 天津港保税区鑫利达石油技术发展有限公司 | Centrifugal pump for pumping air containing fluid |
| CN202326463U (en) * | 2011-12-06 | 2012-07-11 | 中国石油天然气集团公司 | Double-layered blade gas-liquid mixed transmitting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7766081B2 (en) * | 2007-09-10 | 2010-08-03 | Baker Hughes Incorporated | Gas separator within ESP shroud |
-
2011
- 2011-12-06 CN CN 201110402200 patent/CN102384111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348342A1 (en) * | 1988-06-23 | 1989-12-27 | GebràDer Sulzer Aktiengesellschaft | Centrifugal machine with opposing rotation impellers |
| CN2036447U (en) * | 1988-08-12 | 1989-04-26 | 孙明山 | Gas-liquid mixing pump |
| CN1392346A (en) * | 1995-12-28 | 2003-01-22 | 法国石油研究所 | Multiple phase fluid pumping or compressing device with serial vanes |
| US6893207B2 (en) * | 2002-03-05 | 2005-05-17 | Baker Hughes Incorporated | Impeller for gassy well fluid |
| CN2874073Y (en) * | 2005-12-20 | 2007-02-28 | 天津港保税区鑫利达石油技术发展有限公司 | Centrifugal pump for pumping air containing fluid |
| CN202326463U (en) * | 2011-12-06 | 2012-07-11 | 中国石油天然气集团公司 | Double-layered blade gas-liquid mixed transmitting device |
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| Publication number | Publication date |
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| CN102384111A (en) | 2012-03-21 |
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