CN201225312Y - System for reducing thrust acted on diving type pumping components - Google Patents
System for reducing thrust acted on diving type pumping components Download PDFInfo
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- CN201225312Y CN201225312Y CNU2008200067143U CN200820006714U CN201225312Y CN 201225312 Y CN201225312 Y CN 201225312Y CN U2008200067143 U CNU2008200067143 U CN U2008200067143U CN 200820006714 U CN200820006714 U CN 200820006714U CN 201225312 Y CN201225312 Y CN 201225312Y
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- thrust
- impeller
- pump
- submersible
- pump stage
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- 238000005086 pumping Methods 0.000 title claims abstract description 46
- 230000009189 diving Effects 0.000 title description 19
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000001012 protector Effects 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 238000013519 translation Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000008676 import Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000014616 translation Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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Abstract
本实用新型提供一种用于抽运流体的系统，有利于对井环境中的流体抽运。该系统包括潜水泵，其具有多个泵级，各个泵级具有叶轮、抵抗叶轮上的推力载荷的内推力部件和处于内部推力部件的径向向外位置上的作用在叶轮上的密封部件，该密封件在轴向上是可平移的。
The utility model provides a system for pumping fluid, which is beneficial to pumping fluid in the well environment. The system includes a submersible pump having a plurality of pump stages, each pump stage having an impeller, an inner thrust member resisting a thrust load on the impeller, and a sealing member acting on the impeller at a position radially outward of the inner thrust member, The seal is axially translatable.
Description
Technical field
The present invention relates to be used for technology, relate in particular to the system that is used to reduce to act on the thrust on the submersible type pumping assembly at submersible environment pumping (pumping) fluid.
Background technique
When using submersible electrical water pump pumping downhole fluid, multiple action of hydraulic force is on different assemblies.For example, the impeller in the submersible type centrifugal pump often be created in the side of flowing with fluid in the opposite direction on the big reaction force of effect.This big reaction force is for example resisted by the thrust washer in each pump stage in the floating type pump or is resisted by the motor protector thrust-bearing in the compression type pump.
Can have problems in various types of submersible type pumps by the thrust that impeller produced in each pump stage of submersible type pump, comprise pump that has the mixed flow pump stage and the pump that has the Radial Flow pump stage.In the design of some floating types, for example, because the major part of power loss is to cause owing to thrust friction that moment of torsion that the quite high frictional force in the radial outer periphery position causes occurs in external thrust packing ring place in the pump.Yet if the external thrust packing ring is removed from the floating type pump stage, lacking any sealing function has increased leakage loss.
Summary of the invention
Generally speaking, the invention provides a kind of technology that is used at submersible environment pumping (pumping) fluid.This technology is useful to the submersible type pumping system, for example is used in the submersible type pumping system that is used for the pumping downhole fluid in the pit shaft application.The submersible type pumping system is designed to utilize the Thrust Control feature to reduce to submersible pump otherwise acts on some thrust load on the submersible pump assembly.
The utility model provides a kind of system that is used for the pumping fluid, this system comprises submersible pump, it has a plurality of pump stages, each pump stage has the interior thrust part of the thrust load on impeller, the opposing impeller and is in the locational sealed member that acts on the impeller of radially outward of inner thrust part, but the sealing part is translation in the axial direction.
The utility model also provides a kind of system that is used for the pumping fluid, this system comprises submersible pump, it has a plurality of pump stages, each pump stage has impeller and thrust part, this thrust part is in from the radially outer position of impeller eye, be used to resist the thrust load on the impeller, wherein flow to produce fluid, the mobile thrust load that reduces to act on the thrust part of this fluid through thrust part location flow channel.
Description of drawings
After this, some embodiment of the present invention will be described with reference to the drawings, wherein same tag is represented same parts, and:
Fig. 1 is the front view according to the embodiment who is configured in electronic diving pumping (pumping) system in the pit shaft of the embodiment of the invention;
Fig. 2 is the partial cross section figure in the embodiment of the submersible pump shown in Fig. 1 according to the embodiment of the invention;
Fig. 3 is the partial cross section figure in another embodiment of submersible pump shown in Fig. 1 according to the embodiment of the invention;
Fig. 4 is the partial cross section figure in another embodiment of submersible pump shown in Fig. 1 according to the embodiment of the invention;
Fig. 5 is the partial cross section figure in another embodiment of submersible pump shown in Fig. 1 according to the embodiment of the invention;
Fig. 6 is the partial cross section figure in another embodiment of submersible pump shown in Fig. 1 according to the embodiment of the invention.
Embodiment
In the following description, many details have been set forth so that the understanding of the present invention to be provided.Yet those of ordinary skills should be understood that: do not have these details can implement the present invention, and be possible according to described embodiment's multiple variation or remodeling.
The present invention relates to a kind of system and method for some influence of the thrust load that produces when being used to be reduced in the pumping fluid.For example, this system and method can be used for having the diving pumping system of centrifugal submersible pumps.One or more feature is included in the diving pumping system, and with the hydraulic coupling of management role on the outer surface of pump impeller, this hydraulic coupling is tending towards producing the big reaction force that the flow direction with the pumping fluid acts on the contrary.
Totally with reference to figure 1, the embodiment of diving pumping system 20, for example electronic diving pumping system is shown.Depend on its employed concrete application or environment, diving pumping system 20 can comprise various parts.The examples of members of being utilized in pumping system 20 comprises at least one submersible pump 22, at least one submersible pump motor 24 and one or more motor protector 26, and they are joined together to form the diving pumping system.
In the example shown, diving pumping system 20 is designed to be configured in the well 28 in the stratum 30, and this stratum comprises the production fluid of expectation, for example oil.Pit shaft 32 is pierced stratum 30, pit shaft and then at least some are used, be equipped with wellbore casing 34.Perforation 36 is passed wellbore casing 34 and is formed, so that fluid flows between stratum 30 and the pit shaft 32 around.
By the configuration-system 38 that can have various structures, the pumping system 20 of will diving under water is configured in the pit shaft 32.For example, configuration-system 38 can comprise the pipe 40 that is connected to submersible pump 22 by connector 42, for example coil pipe or production pipe.Electric power is offered at least one submersible electric motor 24 via power cable 44.Next submersible electric motor 24 gives submersible pump 22 power supplies, can use described submersible pump 22 to produce fluid by Pump Suction Nozzle 46 pumping.In submersible pump 22, rotate a plurality of impellers to produce fluid to desired assembling position by for example managing 40 pumpings or exploitation, this position may be positioned at ground surface 48 places.
Should be noted in the discussion above that illustrated diving pumping system 20 only is an example can benefiting from polytype diving pumping system of feature as described herein.For example, can add other parts to pumping system, and can use other configuration-system.In addition, produce fluid can by pipe 40 or by around the ring part of configuration-system 38 by pumping to assembling position.This submersible pump or a plurality of pump 22 can also utilize dissimilar pump stages (stage), for example mixed flow pump stage or Radial Flow pump stage.
Totally with reference to figure 2, viewgraph of cross-section illustrates an embodiment's of submersible pump 22 a part.In this embodiment, submersible pump 22 comprises a plurality of pump stages 50.Each pump stage 50 comprises the impeller 52 that is connected to axle 54, and axle 54 can be around central axis 56 rotations.Axle 54 rotation by submersible electric motor 24 makes impeller 52 rotation in the pump case 58 outside.Each impeller 52 passes through impeller or pump stage import 60 suction fluids, and then before entering the diffuser 66 of axial vicinity by impeller outlet 64 drainage fluids, fluid is flowed along internal impeller passage 62.Inner passage 62 is limited by the shape of impeller housing 68, and housing 68 can form to produce and be used for the impeller (as shown in Figure 2) of floating pump stage, or is used to compress the impeller (as shown in Figure 6) of pump stage.Additionally, impeller housing 68 can be designed to be formed for mixed flow pump stage, Radial Flow pump stage or other suitable pump stage form in the submersible pump 22.
In the embodiment shown in Fig. 2, interior thrust part 70, for example interior thrust washer is configured to resist thrust load, for example the downward thrust load that is produced by rotary blade 52.In this embodiment, interior thrust washer 70 is set in the impeller feature 72, for example is formed on the depression in the top of impeller housing 68.Interior thrust washer 70 is set at impeller 52 and next-door neighbour's radially inwardly between the part 74 of upstream diffuser 66.Yet, replace conventional extrapolability packing ring, use axial elasticity external sealed parts 76.Among the embodiment in Fig. 2, sealed member 76 comprises radial seal 78, and this radial seal 78 is set to part 80 sealing engagement with the roughly axially locating of impeller housing 68.Thereby sealed member 76 forms seal point with the part 80 of impeller 52, but sealing point is along part 80 axial translations.This radial seal 78 can be set in the depression 82 in the part that is formed on contiguous diffuser 66, as shown in the figure.Therefore, outside seal is formed between the diffuser of impeller and vicinity, does not produce undesired reaction force on the radially outer surface in submersible pump 22.
Fig. 3 shows the selected embodiment of sealed member 76.In this embodiment, interior thrust part 70 is set at radially inwardly position similarly.Yet sealed member 76 comprises the radial outer periphery parts 84 that supported by axial elasticity parts 86, for example outer washer.Rely on the compression and the expansion of parts 86, axial elasticity parts 86 can roughly make Sealing 76 translations on axially.As an example, axial elasticity parts 86 can comprise spring members or comprise other type compliant member that metallic material, elastomeric material and composite material are made by various materials.Should be noted that the embodiment shown in Fig. 2,3 can also be used to compress pump stage and eliminate preceding seal leakage.
The for example clean thrust load downwards of another embodiment in the system that is used for managing thrust load, net thrust load can be reduced by the pressure in balance thrust washer zone, thereby impeller discharge pressure rather than impeller inlet pressure act on the thrust washer.In this embodiment, form the pressure that flow channel comes balance thrust part 88 through thrust part 88.Flow channel for example can be formed between thrust part 88 and the impeller 52 or the thrust pad of thrust part 88 and contiguous diffuser between.In an example, thrust part 88 for example thrust washer is maintained at the maintenance feature 90 of impeller 52 of the radially outer position of the eyelet 91 that is arranged in impeller, as shown in Figure 4.Maintenance feature 90 can comprise the groove 92 in the bottom that is formed on impeller 52.Flow channel 94 forms along thrust part 88 back side between thrust part 88 and impeller 52, shown in arrow among Fig. 4 96.Flow path or passage 94 produce fluid at submersible pump 22 duration of works and flow, and this has reduced to act on the thrust load on the thrust part 88.Selectively, can between the diffuser 66 (referring to the dotted line among Fig. 4) of thrust part 88 and vicinity, form flow channel 94.For example, can flow, the thrust load that acts on the thrust part 88 is reduced along the radial groove guiding on the diffuser 66 that is formed on thrust part 88 and/or vicinity.
Can use various technology to generate flow channels 94, be included in the several position place that keeps in the characteristic area to impeller 52 spot-facings (spot facing), to be created in the passage of thrust part 88 back.Thrust part 88 can press fit advance to keep in the feature 90, with the fixing thrust part in the position that forms expectation flow channel 94.In this embodiment, net thrust reduce to flow by from the radially outward zone of thrust part 88 along the dorsal part guiding of thrust part 88, and along thrust part 88 radially inwardly regional guidance go out.In certain embodiments, the gap that flows through between the external diameter that seals before gasket hole and the impeller of the fluid by flow channel 94 is discharged from.The flow resistance that should be noted that balance flow channel 94 should be less than the flow resistance of the preceding seal clearance in each pump stage.
Another embodiment of the system and method for fluid of pumping shown in Fig. 5 and management thrust load.In this embodiment, reduced to act on clean thrust load downwards on the downward thrust part 98.Downwards thrust part 98 can comprise downward thrust pad or thrust washer and can be positioned in radially inwardly position, as shown in the figure.By in conjunction with last thrust part 100, for example go up thrust pad or packing ring, reduce to act on the downward thrust on the parts 98.In addition, one or more equalizing orifices 102 being set leaks from the internal channel 62 of impeller 52 and through last thrust part 100 to allow fluid.In the embodiment shown, equalizing orifice 102 forms by the top of the impeller housing 68 of 62 tops, inner passage, thereby they are positioned in roughly axial direction.Yet, can adjust the position and the direction of equalizing orifice 102 as required for concrete application.
When starting submersible pump 22, the impeller 52 of each pump stage 50 is placed on its downward thrust part 98.After the startup, impeller 52 rotates and causes leakage flow by the discharging of each impeller 52 and through last thrust part 100 and by equalizing orifice 102.This leakage flow has reduced the pressure in the chamber between the thrust part 98 and 100, causes impeller 52 to move up, and thrust part 100 is gone up in contact.The face seal that is formed by last thrust part 100 also seals the leakage flow by equalizing orifice 102.Therefore, this structure provides improved longitudinal balance because last thrust part 100 radially inwardly the top area of the impeller 52 of location be exposed to impeller inlet pressure, rather than impeller discharge pressure.In addition, embodiment shown in Fig. 5 can utilize Sealing 76 promote impellers 52 sealing, move axially.For example, Sealing 76 can comprise the radial seal 78 of the sealing between the diffuser that allows the impeller axial translation to keep impeller and vicinity simultaneously.Embodiment shown in Fig. 5 is particularly useful for the Radial Flow pump stage, and can make this pump stage have compact pump stage height with respect to conventional design.
Totally, show another embodiment of the system and method that is used for pumping fluid and management thrust load with reference to figure 6.In this embodiment, the submersible pump 22 of diving pumping system 20 is made of a plurality of compression pump stages 104 that pile up, that have the impeller 52 that is rotated by axle 54.For compression pump stage 104,, for example descend thrust load to resist by the protector bearing 106 (schematically showing) that is positioned in the motor protector 26 with dotted line by the net thrust load that the rotation of impeller 52 obtains.By from down or import 108 counter balance pocket 110 supreme or downstream pump stage 104 of upstream pump stage 104 (porting) pressure of releasing effectively reduce thrust load on the protector bearing 106.In certain embodiments, described on/downstream pump stage 104 is top pump stage, and described down/upstream pump stage 104 is bottom or the foot pump stage 104 in submersible pump 22.In other embodiments, can design this system so that import 108 is the import of submersible pump.
By producing pressure relief path or fluid passage 112 from selected pump stage import 108 to selected counter balance pocket 110, can relieving pressure.In one embodiment, passage 112 to small part is passed axle 54 and is formed, and this passage can be roughly forms along the central axis of axle 54.In addition, throttle orifice 114 or other limiter can be arranged on the leakage flow of controlling in the passage 112 from last/downstream pump stage 104 to following/upstream pump stage 104.
Employed concrete assembly can should be used for according to the real well of this system of use changing in diving pumping system 20.Concrete assembly, component size and the module position that is used for managing net thrust load is from a diving pumping system to another diving pumping system and be applied to another well from a well and use and also can change.Based on various factors; the for example quantity of submersible pump and layout, submersible electric motor and motor protector and concrete well environment, well application and generation requirement, selection is used for the specific embodiment of the thrust load on the specific components of control action in the diving pumping system.Other assembly can be connected to electronic diving pumping system or form the part of electronic diving pumping system.
Therefore, although only describe several embodiments of the present invention in the above in detail, ordinary skill technician is with easy to understand: do not breaking away from fact under the situation of instruction of the present invention, many variations are possible.These variations are intended to be comprised in as being limited in the scope of the present invention in claims.
Claims (11)
1. a system that is used to reduce to act on the thrust on the submersible type pumping assembly is characterized in that, comprising:
Submersible pump, it has a plurality of pump stages, and each pump stage has the interior thrust part of the thrust load on impeller, the opposing impeller and is in the locational sealed member that acts on the impeller of radially outward of inner thrust part, but the sealing part is translation in the axial direction.
2. the system as claimed in claim 1, wherein the sealing part is the Sealing of radial location, it forms along the surface of the axially locating of impeller seal point in axial sliding.
3. the system as claimed in claim 1, wherein the sealing part comprises the extrapolability packing ring that is supported on the axial elasticity parts.
4. the system as claimed in claim 1, wherein the sealing part comprises the axial elasticity parts.
5. the system as claimed in claim 1 further comprises the submersible electric motor and the motor protector that are connected to submersible pump.
6. the system as claimed in claim 1, wherein each pump stage is floating pump stage.
7. the system as claimed in claim 1, wherein each pump stage is the compression pump stage.
8. a system that is used to reduce to act on the thrust on the submersible type pumping assembly is characterized in that, comprising:
Submersible pump, it has a plurality of pump stages, each pump stage has impeller and thrust part, this thrust part is in from the radially outer position of impeller eye, be used to resist the thrust load on the impeller, wherein flow the mobile thrust load that reduces to act on the thrust part of this fluid to produce fluid through thrust part location flow channel.
9. system as claimed in claim 8, wherein this thrust part is press fitted in the feature of impeller.
10. system as claimed in claim 8, wherein each pump stage is floating pump stage.
11. system as claimed in claim 8 further comprises the submersible electric motor and the motor protector that are connected to submersible pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200067143U CN201225312Y (en) | 2008-02-19 | 2008-02-19 | System for reducing thrust acted on diving type pumping components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200067143U CN201225312Y (en) | 2008-02-19 | 2008-02-19 | System for reducing thrust acted on diving type pumping components |
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| Publication Number | Publication Date |
|---|---|
| CN201225312Y true CN201225312Y (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200067143U Expired - Fee Related CN201225312Y (en) | 2008-02-19 | 2008-02-19 | System for reducing thrust acted on diving type pumping components |
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| Country | Link |
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| CN (1) | CN201225312Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514709B (en) * | 2008-02-19 | 2014-07-30 | 普拉德研究及开发股份有限公司 | System and method for reducing thrust acted on submersible type pumping component |
| US10890189B2 (en) | 2016-06-01 | 2021-01-12 | Schlumberger Technology Corporation | Submersible pumping system having thrust pad flow bypass |
-
2008
- 2008-02-19 CN CNU2008200067143U patent/CN201225312Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514709B (en) * | 2008-02-19 | 2014-07-30 | 普拉德研究及开发股份有限公司 | System and method for reducing thrust acted on submersible type pumping component |
| US10890189B2 (en) | 2016-06-01 | 2021-01-12 | Schlumberger Technology Corporation | Submersible pumping system having thrust pad flow bypass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20170219 |