CN106402170A - Double-thrust-bearing device for motor protector of electric submersible pump unit - Google Patents
Double-thrust-bearing device for motor protector of electric submersible pump unit Download PDFInfo
- Publication number
- CN106402170A CN106402170A CN201510807662.4A CN201510807662A CN106402170A CN 106402170 A CN106402170 A CN 106402170A CN 201510807662 A CN201510807662 A CN 201510807662A CN 106402170 A CN106402170 A CN 106402170A
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- thrust
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- 230000001012 protector Effects 0.000 title abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 21
- 238000000338 in vitro Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 13
- 238000003032 molecular docking Methods 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a double-thrust-bearing device for a motor protector of an electric submersible pump unit. The double-thrust-bearing device comprises a single-thrust-bearing device and is characterized in that a lower section cylinder body extends from the lower portion of a bearing seat of the single-thrust-bearing device; a low-level upper positioning block, a low-level lower positioning block, a low-level supporting pipe, a pressure spring, a pressure spring retainer ring, a low-level mobile block and a low-level lower immobile block are mounted inside the lower section cylinder body; the low-level mobile block is connected with the low-level supporting pipe through a buckle sleeve; an upper supporting sleeve is connected with the low-level supporting pipe in a key transmission manner; the low-level mobile block is kept to have a distance from a circular ring-shaped disc; the low-level lower immobile block is mounted on the low-level upper positioning block; the lower part of the low-level upper positioning block is fixedly connected with the pressure spring retainer ring and a round nut in a key connection manner; the round nut is screwed in an internal thread on the lower part of the lower section cylinder body; the pressure spring is mounted between the pressure spring retainer ring and a shaft shoulder of the low-level positioning block. The double-thrust-bearing device disclosed by the invention has the advantages that two stages of high-load thrust bearings are balanced in loading, and the original running characteristic of high temperature resistance of the high-load thrust bearings is maintained.
Description
Technical field：
The present invention relates to the double thrust bearing device of oil-immersed pump, particularly Electric Submersible Pump Unit motor protecter.
Background technology：
Electric Submersible Pump Unit is mainly used in deep-well pump oil, and the axial load of motor shaft is more much greater than conventional water pump,
So it bears top load (motor protecter is subjected to 2.5-5 ton thrust power) using axial thrust bearing.
Electric Submersible Pump Unit is made up of submersible electric machine with oil, motor protecter, gs-oil separator, the pump housing.Motor shaft
Gs-oil separator, the pump housing is driven to run, so axial rolling bearing is mounted in after stretching into motor protecter again
In motor protecter.Conventional thrust bearing adopts ball, roller bearing, because its rolling friction is multiple spot or many
Line is contacted with bearing ring, bearing load little it is impossible to apply in Electric Submersible Pump Unit, Electric Submersible Pump Unit
It is the high load capacity thrust bearing using sliding friction.High load capacity thrust bearing by upper quiet piece, motion block, under quiet piece
Composition.Upper and lower quiet piece is the ring block that unilateral section is in class I-shaped, and motion block is annulus block, moves
Block is clamped between upper and lower quiet piece, is the sliding friction of anchor ring with upper and lower quiet piece of binding face, load
Area is quite big, so producing high load capacity.Four are offered in upper and lower quiet piece of ring block outside rectangular ring
Dowel hole, in interfaced top connection, locating piece respectively uniform four stop round pins move cooperation stretch into quiet
Implement docking in the corresponding dowel hole of block outside rectangular ring.
Existing single axial rolling bearing is by bearing block, high load capacity thrust bearing, top connection, a lower locating piece
Composition.As shown in drawings：The cylindrical body of bearing block, bearing block cylinder 9 bottom inwardly one bottom of extension
Portion's circle ring disk, bearing block outer wall is fixed on motor protecter, and bearing block inwall is internal thread hole, locating piece 7
In step shell-like, step set external screw thread screws up in cylinder 9 internal thread hole, and its basal surface is fitted in bottom
On circle ring disk 21 upper surface, under high load capacity thrust bearing, quiet piece of 5 lower outside straight-flanked ring inner circles are moved cooperation and are inserted in
Between shaft shoulder lower surface, stage clip is installed；Under subordinate, locating piece is a round nut, and round nut external screw thread screws up
In the lower internal thread of hypomere cylinder, its upper surface is overlayed with stage clip back-up ring upper ring plate following table surface elastic,
It is fixedly sleeved that round nut inner circle passes through tubulose circle enforcement in vitro under the bonded back-up ring with stage clip.
It is an advantage of the current invention that：When two-stage high load capacity thrust bearing load balancing, especially big load more
Equilibrium, the irregular phenomenon of bearing capacity, the single-bearing load that will not produce simple duplex bearing tandem are excessive, high
Friction causes burning high temperature scaling loss bearing phenomenon, keeps the resistant to elevated temperatures original operation characteristic of high load capacity thrust bearing,
The harmony of duplex bearing load can be greatly improved the scope of application of Electric Submersible Pump Unit.
Brief description：
Accompanying drawing is present configuration schematic diagram.
Specific embodiment：
Present configuration：Including single axial rolling bearing it is characterised in that：Axle in single axial rolling bearing
Bearing 9 following table face down extension one hypomere cylinder isometrical with bearing block cylinder, in hypomere cylinder body
Locating piece 23 in subordinate, locating piece 26, subordinate's support tube 29, stage clip 24, stage clip gear under subordinate are installed
Quiet piece 22 under circle 25, and subordinate's motion block 21 of subordinate's high load capacity thrust bearing, subordinate；Subordinate's motion block passes through
Two semicircular ring 10 of subordinate are fixedly connected with subordinate support tube tight fit retaining ring；The support of single axial rolling bearing
Cover 12 hypomere inner circles and have additional rectangle keyway, subordinate's support tube 29 epimere inner circle is provided with corresponding rectangle keyway,
Pass through the long square key 20 of set unification between two rectangle keyways to implement to be in transmission connection；In subordinate's motion block 21, subordinate
It is provided with the radial direction oil transportation hole that oil transportation hole central with motor shaft 13 connects, subordinate's motion block simultaneously between support tube 29
Bottom circle ring disk 8 lower surface of 21 upper surface and single axial rolling bearing possesses spacing；Locating piece in subordinate
23 is in two-way step shell-like, and two-way step set medium pore moves engagement sleeves on motor shaft 13 is cylindrical, quiet under subordinate
The outside rectangular ring inner circle of block 22 bottom is moved and coordinates the top bar being inserted in two-way step set to cover on cylindrical, two-way
Four stop round pins 6 that the upper surface of the rank set shaft shoulder is fixed stretch into the outside rectangular ring of quiet piece of 22 bottoms under subordinate
Corresponding dowel hole in；In subordinate, locating piece 23 two-way step set bottom is cylindrical is kept off with stage clip by bonded
Thrust bearing system is hard contact working condition, being together in series two sets of single thrust bearing simple systems no
Method ensures that two sets of thrust bearings are at preferable working condition and (only lead to one because of due to tolerance
Thrust bearing system load is excessive, and another one thrust bearing system load is too small simultaneously or even is not subject to carry completely
Lotus) it is impossible to realize rational thrust load distribution.Carrying inequality can cause single-bearing load excessive, increase negative
The friction of load forces degree causes burning high temperature, reduces the resistant to elevated temperatures original operation characteristic of high load capacity thrust bearing.Also
Can scaling loss bearing.
Content of the invention：
It is an object of the invention to overcoming drawbacks described above, provide a kind of the double of Electric Submersible Pump Unit motor protecter
Axial rolling bearing.
The solution of the present invention is：Including single axial rolling bearing it is characterised in that：In single axial rolling bearing
Bearing block following table face down extension one hypomere cylinder isometrical with bearing block cylinder, hypomere cylinder
Locating piece in subordinate, locating piece, subordinate's support tube, stage clip, stage clip back-up ring under subordinate are inside installed, and
Quiet piece under subordinate's motion block of subordinate's high load capacity thrust bearing, subordinate；Subordinate's motion block passes through two semicircular ring of subordinate
It is fixedly connected with subordinate support tube tight fit retaining ring；The support set hypomere inner circle of single axial rolling bearing has additional
Rectangle keyway, subordinate's support tube epimere inner circle is provided with corresponding rectangle keyway, passes through set between two rectangle keyways
The long square key of unification is implemented to be in transmission connection；Be provided between subordinate's motion block, subordinate's support tube with motor shaft in
The radial direction oil transportation hole of centre oil transportation hole connection, the bottom of the upper surface of subordinate's motion block and single axial rolling bearing simultaneously
Circle ring disk lower surface possesses spacing；In subordinate, locating piece is in two-way step shell-like, and two-way step set medium pore moves
Engagement sleeves on motor shaft is cylindrical, under subordinate, move cooperation and be inserted in two-way by the outside rectangular ring inner circle of quiet piece of bottom
The top bar of rank set covers on cylindrical, and four stop round pins that the upper surface of the two-way step set shaft shoulder is fixing stretch into down
In the corresponding dowel hole of outside rectangular ring of quiet piece of bottom under level；Locating piece two-way step set bottom in subordinate
Cylindrical by bonded with the lower tubulose body of stage clip back-up ring in circle fixedly sleeved；Stage clip back-up ring is in a lower tubulose
Body docks shape with a upper ring plate；Stage clip back-up ring upper ring plate upper surface and subordinate's locating piece two-way step set
Locating piece 7 step puts quiet piece 5 under cylindrical enforcement of radial positioning, uniform four respectively on locating piece 7
Stop round pin 6 moves cooperation and stretches in the corresponding dowel hole of quiet piece of 3 outside rectangular ring implements docking.On connect
1 puts in level Four step set, and step set external screw thread screws up in cylinder 9 internal thread hole, and its basal surface pastes
Lean against on the upper surface of quiet piece of 3 upper outside straight-flanked rings, quiet piece of 3 upper outside on high load capacity thrust bearing
The radial direction that straight-flanked ring inner circle moves upper quiet piece 3 of the cylindrical enforcement of set of getting out of a predicament or an embarrassing situation that top connection 1 step set is inserted in cooperation is fixed
Position, also has stop round pin 6, dowel hole to implement docking between the two.The cylindrical dynamic cooperation of motor shaft 13 is cased with propping up
Stay tube 11, support tube 11 stage casing is cylindrical to be provided with a cannelure, installs two symmetrical semicircular ring in cannelure
10, the step groove tight fit retaining ring of motion block 4 upper surface is in two semicircular ring 10 cylindrical enforcement motion blocks 4 and support
Being fixedly connected of pipe 11, support tube 11 upper end inner circle tight fit retaining ring two semicircles of groove on motor shaft 13
The cylindrical upper enforcement motor shaft 13 of ring is fixedly connected with support tube 11, and support tube 11 bottom is with some
The step pipe of axial bars seam, the support set 12 inner circle tight fit retaining ring of a step shell-like is in support tube 11
Force step pipe inner circle diameter to reduce on lower end step pipe is cylindrical to overlay on motor shaft 13, implement to support
Pipe 11 bottom is fixedly connected with motor shaft, thus the support tube 11 of single axial rolling bearing, support set 12,
Motion block is to rotate with motor shaft 13.Motor shaft is provided with central oil transportation hole, motion block 4, support tube 11, motor shaft
13 are provided with the radial direction oil transportation hole that oil transportation hole central with motor shaft 13 connects, and stop so that lubricating oil enters high load capacity
It is lubricated in thrust bearing.At present quiet piece of 5 upper surfaces are installed and possess gap with motion block 4 lower surface, this gap
Within 1mm.
When oil-immersed pump working environment changes, such as (depth increasing value is at one times for the intensification of oil well depth larger amplitude
Within), then oil-immersed pump high load capacity thrust bearing bearing load increase, and power motor power have more than needed, or
The method being reduced using power motor rotating speed is it is also possible to pump oil.At this moment difficulties are to increase high bearing
The load-carrying ability of lotus thrust bearing.Conventional method is not the external diameter increasing high load capacity thrust bearing (because of external diameter
Increase, volume size also increases), but stopped using the high load capacity that plain mode concatenates one isometrical size of installation
Thrust bearing.We do overtesting and find：Because machined piece can have certain tolerance, and common stopping
In the lower tubulose body of circle 25, circle is fixedly sleeved；Stage clip back-up ring 25 is in a lower tubular body and a upper ring plate
Docking shape；Stage clip back-up ring 25 upper ring plate upper surface covers shaft shoulder lower surface with the two-way step of subordinate's locating piece 23
Between stage clip 24 is installed；Under subordinate, locating piece 26 is a round nut, and round nut external screw thread screws up in hypomere
In the lower internal thread of cylinder, its upper surface is overlayed with stage clip back-up ring 25 upper ring plate following table surface elastic, circle
Nut inner circle is passed through bonded fixedly sleeved with the circle enforcement in vitro of 25 times tubuloses of stage clip back-up ring.
Under subordinate, the round nut of locating piece 26 is cylindrical is provided with an annular groove, uses for after round nut positioning
Screw compressing annular groove groove width positioning, makes external screw thread be positioned in hypomere cylinder body after deforming.Stage clip back-up ring 25
Inside and outside circle pass through bonded fixedly sleeved with locating piece in subordinate 23, round nut respectively it is ensured that in subordinate
Locating piece 25 does not rotate in a circumferential direction.
The support set 7 of single axial rolling bearing be with motor shaft rotate, thus drive subordinate's support tube 29, under
Level motion block 21 rotates.
The pump housing not pump oil when, the precompressed elastic force of quiet piece carrying stage clip, pump housing pump on single axial rolling bearing
The axial force pushing is carried when oily；Because axial rolling bearing big load is mainly downward axial force, so
Can uneasiness load quiet piece in level in hypomere cylinder, only quiet piece 22, subordinate's motion block 21 under subordinate is installed, thus
Simplify structure.
Below theory of mechanics of the present invention is illustrated, for the ease of explaining, former single axial rolling bearing is regarded
For higher level's thrust bearing system, from the point of view of hypomere cylinder inner core inner structure is considered as subordinate's thrust bearing system：
As shown in drawings, subordinate's thrust bearing system adopts stage clip to provide axial elasticity support force to present configuration,
Because in the subordinate of installation, locating piece axial location is adjustable, therefore this stage clip 24 can be as needed when installing
Apply adjustable precompression in certain limit.When submersible electric motor protector double thrust bearing system is not subject to outside
During load, quiet piece 22 under subordinate's motion block 21 of subordinate's thrust bearing system and subordinate between and higher level's thrust shaft
Hold, between the motion block 4 of system and upper quiet piece 3, there is certain pretightning force (i.e. the precompressed elastic force of stage clip).When
The axial load pushing being applied in submersible electric motor protector double thrust bearing system be gradually increased from zero (Gu
Fixed watt thrust bearing system is not more than 2.5 tons, and floating-bush thrust bearing system is not more than 5 tons) during,
The load of subordinate's thrust bearing system keeps constant；The load of higher level's thrust bearing system motion block and upper quiet piece 3
It is gradually lowered until dropping to zero, the motion block of subordinate and higher level's thrust bearing is moved downwardly until higher level's thrust afterwards
The motion block 4 of bearing arrangement with quiet piece of 5 contact positions.When submersible electric motor protector double thrust bearing system
When axial load continues to increase, because Elastic penetration only produces small change, (higher level's thrust bearing moves
The block amount of altering about 1mm about), therefore its elastic force is held essentially constant, i.e. the load of subordinate's thrust bearing system
Be held essentially constant, higher level's thrust bearing motion block 4 and under load between quiet piece 5 be gradually increased (fixing watt
Maximum permissible value is 2.5 tons, and floating-bush maximum permissible value is 5 tons), when the load of higher level's thrust bearing is
During big rated load, the axial load born of submersible electric motor protector double thrust bearing system reaches maximum
Definite value (double fixing tile systems are 5 tons, and double floating tile systems are 10 tons).Higher level's thrust bearing system, under
The substantially even weighing apparatus of two thrust bearing bearing capacities of level thrust bearing system, will not produce simple duplex bearing tandem
Bearing capacity significantly non-uniform phenomenon.
Claims (1)
1. the double thrust bearing device of Electric Submersible Pump Unit motor protecter, including single axial rolling bearing, its
It is characterised by：Bearing block (9) following table of single axial rolling bearing face down extension one with bearing block cylinder
The isometrical hypomere cylinder of body, is provided with locating piece in subordinate (23), locating piece under subordinate in hypomere cylinder body
(26), subordinate's support tube (29), stage clip (24), stage clip back-up ring (25), and subordinate's high load capacity thrust
Under subordinate's motion block (21) of bearing, subordinate quiet piece (22)；Subordinate's motion block passes through two semicircular ring (10) of subordinate
It is fixedly connected with subordinate support tube tight fit retaining ring；Support set (12) the hypomere inner circle of single axial rolling bearing
Have additional rectangle keyway, subordinate's support tube (29) epimere inner circle is provided with corresponding rectangle keyway, two square keys
Pass through the long square key (20) of set unification between groove to implement to be in transmission connection；Prop up in subordinate's motion block (21), subordinate
It is provided with the radial direction oil transportation hole connecting with motor shaft (13) central authorities oil transportation hole, subordinate simultaneously between stay tube (29)
Bottom circle ring disk (8) lower surface of the upper surface of motion block (21) and single axial rolling bearing possesses spacing；Under
In level, locating piece (23) is in two-way step shell-like, and two-way step set medium pore moves engagement sleeves in motor shaft (13)
On cylindrical, under subordinate, the outside rectangular ring inner circle of quiet piece of (22) bottom is moved cooperation and is inserted in the upper of two-way step set
On step set is cylindrical, four stop round pins (6) that the upper surface of the two-way step set shaft shoulder is fixing are stretched under subordinate
In the corresponding dowel hole of the outside rectangular ring of quiet piece of (22) bottom；Two-way of locating piece (23) in subordinate
Rank set bottom cylindrical by bonded with the lower tubulose body of stage clip back-up ring (25) in justify fixedly sleeved；Stage clip keeps off
Circle (25) docks shape in a lower tubular body with a upper ring plate；On stage clip back-up ring (25) upper ring plate
Between surface and subordinate's locating piece (23) two-way step set shaft shoulder lower surface, stage clip (24) is installed；Under subordinate
Locating piece (26) is a round nut, and round nut external screw thread screws up in the lower internal thread of hypomere cylinder,
Its upper surface is overlayed with stage clip back-up ring (25) upper ring plate following table surface elastic, and round nut inner circle is passed through bonded
Fixedly sleeved with the circle enforcement in vitro of tubulose under stage clip back-up ring (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807662.4A CN106402170B (en) | 2015-11-20 | 2015-11-20 | The double thrust bearing device of electric submersible pump unit motor protecter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807662.4A CN106402170B (en) | 2015-11-20 | 2015-11-20 | The double thrust bearing device of electric submersible pump unit motor protecter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402170A true CN106402170A (en) | 2017-02-15 |
| CN106402170B CN106402170B (en) | 2018-05-01 |
Family
ID=58008126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510807662.4A Active CN106402170B (en) | 2015-11-20 | 2015-11-20 | The double thrust bearing device of electric submersible pump unit motor protecter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402170B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296344A (en) * | 2018-11-26 | 2019-02-01 | 山东泽元石油机械有限公司 | Submersible screw pump retarder protector |
| CN109510379A (en) * | 2018-11-26 | 2019-03-22 | 歌尔股份有限公司 | A kind of motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4557610A (en) * | 1982-09-02 | 1985-12-10 | Matsushita Electric Industrial Co., Ltd. | Dynamic pressure type fluid bearing device |
| JP3997115B2 (en) * | 2002-06-17 | 2007-10-24 | Ｎｔｎ株式会社 | Hydrodynamic bearing device |
| CN101458003A (en) * | 2007-12-12 | 2009-06-17 | 何君 | Cold air machine driven by floating bearing type high-speed electric machine with contact protection bearing |
| CN202055973U (en) * | 2011-04-15 | 2011-11-30 | 重庆云河水电股份有限公司 | Self-lubricating radial thrust bearing of runner pump |
| CN202300967U (en) * | 2011-10-14 | 2012-07-04 | 天津市百成油田采油设备制造有限公司 | One-stage seal electrical submersible pump protector with one independent settling chamber |
-
2015
- 2015-11-20 CN CN201510807662.4A patent/CN106402170B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4557610A (en) * | 1982-09-02 | 1985-12-10 | Matsushita Electric Industrial Co., Ltd. | Dynamic pressure type fluid bearing device |
| JP3997115B2 (en) * | 2002-06-17 | 2007-10-24 | Ｎｔｎ株式会社 | Hydrodynamic bearing device |
| CN101458003A (en) * | 2007-12-12 | 2009-06-17 | 何君 | Cold air machine driven by floating bearing type high-speed electric machine with contact protection bearing |
| CN202055973U (en) * | 2011-04-15 | 2011-11-30 | 重庆云河水电股份有限公司 | Self-lubricating radial thrust bearing of runner pump |
| CN202300967U (en) * | 2011-10-14 | 2012-07-04 | 天津市百成油田采油设备制造有限公司 | One-stage seal electrical submersible pump protector with one independent settling chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296344A (en) * | 2018-11-26 | 2019-02-01 | 山东泽元石油机械有限公司 | Submersible screw pump retarder protector |
| CN109510379A (en) * | 2018-11-26 | 2019-03-22 | 歌尔股份有限公司 | A kind of motor |
| CN109510379B (en) * | 2018-11-26 | 2023-11-17 | 歌尔股份有限公司 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402170B (en) | 2018-05-01 |
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Effective date of registration: 20190807 Address after: Room 401, Building No. 1618, Xinyang Road, Fengxian District, Shanghai, 201413 Patentee after: Shanghai Feizhou Boyuan Petroleum Equipment Co.,Ltd. Address before: Room 1084, Building 4, No. 580 Shenzhou Road, Fengxian District, Shanghai, 201400 Patentee before: SHANGHAI JUMA PETROLEUM TECHNOLOGY SERVICE Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 401, Building 2 and Room 102, Building 4, No. 1618 Xinyang Road, Fengxian District, Shanghai, 2014 Patentee after: Shanghai Feizhou Boyuan Material Technology Co.,Ltd. Address before: 201413 Room 401, building 2, 1618 Xinyang Road, Fengxian District, Shanghai Patentee before: Shanghai Feizhou Boyuan Petroleum Equipment Co.,Ltd. |