CN100479297C - Large submersible electric pump - Google Patents
Large submersible electric pump Download PDFInfo
- Publication number
- CN100479297C CN100479297C CNB200510040139XA CN200510040139A CN100479297C CN 100479297 C CN100479297 C CN 100479297C CN B200510040139X A CNB200510040139X A CN B200510040139XA CN 200510040139 A CN200510040139 A CN 200510040139A CN 100479297 C CN100479297 C CN 100479297C
- Authority
- CN
- China
- Prior art keywords
- water pump
- shaft
- motor
- rotating shaft
- scale electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
This invention relates to a large diving pump to control the temperature rising of the stator and rotor effectively. An air-water cooling system formed by an air cooling circulation made up of centrifugal fans and a water cooler set at the shell is formed in the motor, which can effectively reduce the rising of the temperature of the stator windings. The plan for reducing the high rising temperature of the rotor is to form a surface trench of large pitch to play the role of a screw fan forcing the internal air to flow through the air space surface and bring away with the heat generated by the rotor to form an independent cooling system of rotor ventilation with the outer water cooler.
Description
Technical field
The submersible pump that the present invention relates to, the power of more specifically saying so reach 250kW, bore reaches 1m and above, the band planetary gear speed-reduction large-scale electric underwater pump of pump rotary speed below 500r/min.
Background technology
In the prior art, the motor in the large-scale electric underwater pump is coaxial setting with water pump.Linear velocity based on the water pump vane periphery must keep this design principle of specific constant, and during to large scale development, the impeller diameter of water pump is big more at water pump, and rotating speed is then low more.And for motor, the motor that power is identical, rotating speed are low more, and then its number of poles is many more, thereby the diameter of motor is big more, volume is big more, and efficient and power factor are low more.Simultaneously, the increase of motor diameter will not only tie up runner, and the stator angle of diffuser is reached more than 25 °, increase divergence loss.
A technical barrier of large diving motor is the stator and rotor temperature rise that reduces motor, particularly the problem that rotor temperature rise is high is difficult to solve, the rotor temperature rise height can cause rotor thermal expansion, and the consequence of rotor thermal expansion can cause reducing of air gap, thus the serious accident that causes stator and rotor to wipe mutually.
Summary of the invention:
Purpose of the present invention is exactly that a kind of large-scale electric underwater pump that can effectively control the stator and rotor temperature rise of motor will be provided.
For achieving the above object, inventing the technical scheme that adopts is: a kind of large-scale electric underwater pump is characterized in that: motor internal is provided with the air cooling circulation of centrifugal fan formation and the water cooler composition of motor housing setting forms empty---water cooling system.
In order more effectively to reduce the rotor temperature rise problem, the present invention is provided with spiral helicine groove at rotor surface.
The present invention takes to force the air cooling circulation at motor internal, and motor housing is provided with water cooler, forms empty---water cooling system.This system can reduce the temperature rise of stator winding effectively; Solving the high scheme of rotor temperature rise then is the Surface Groove that forms coarse pitch at rotor surface, form the effect of Spiral fan, force inner air to flow through air gap surface, take away the heat that rotor forms, constitute the independent cooling system of rotor ventilation with outside water cooler, thereby reduced rotor temperature rise effectively.
Compared with the prior art, the present invention has outstanding substantive distinguishing features and significant technological progress, imbody in the following areas:
Because the present invention has taked the special technique measure, has solved electric machine temperature rise, particularly the technical barrier of rotor temperature rise is laid a good foundation for submersible pump maximizes; The present invention makes water pump obtain low speed, big torque by decelerator is set.Compare with the large-scale electric underwater pump that motor in the existing technology and water pump are coaxial, its efficient improves more than 5%, and power factor improves more than 20%, and weight reduces 50%.
The speed ratio of planetary reducer can in very large range be selected in design among the present invention, helps optimizing selecting ripe hydraulic model for use, raises the efficiency, improves cavitation resistive property.
Summary of drawings
Fig. 1 is a structure principle chart of the present invention;
Fig. 2 is the structural representation at planetary reducer position among the present invention;
Fig. 3 is the structural representation at the floating fulcrum position of sun gear among the present invention;
Fig. 4 is the structural representation of two flanged thrust bearing end caps among the present invention;
Fig. 5 is the structural representation of planetary reducer among the present invention;
Fig. 6 is the vertical view of Fig. 5.
Drawing reference numeral: motor 10, machine shaft 11, motor thrust bearing 12, centrifugal fan 13, water cooler 14, rotor 15, spiral helicine groove 151; Planetary reducer 20, sun gear 21, wheel shaft 211, planetary wheel carrier 22, central shaft hole 221, floating fulcrum 23, radiating fin 24,25; Water pump 30, water pump rotating shaft 31, impeller 32; Water pump journal bearing 40; Water pump journal bearing 50; Water pump thrust bearing 60; Motor thrust bearing end cap 70; Bleed valve 80; The first road mechanical seal 90; The second road mechanical seal 100; The 3rd road mechanical seal 110.
Embodiment
Top priority of the present invention is will effectively control also to reduce the temperature rise that motor and each spring bearing rotary part produce in the course of the work really.
Below at first the structure of motor portion is specifically described:
Referring to Fig. 1, motor 10 inside are provided with the air cooling circulation that centrifugal fan 13 takes to force the air cooling formation, as the direction of 16 expressions of the arrow among Fig. 1, form formation sky---water cooling system with the water cooler 14 that motor 10 shells are provided with, it can effectively reduce stator intensification problem; Be provided with spiral helicine groove 151 on rotor 15 surfaces, form the groove 151 of coarse pitch on rotor 15 surfaces, it acts on similar Spiral fan, the pitch of groove 151 is 0.1～0.2 times of rotor 15 diameters, in order to strengthen its draught capacity, adopt rectangular thread, the ratio of width to height of screw thread is 2: 1, this structure can force inner air to flow through air gap surface, the direction of direction shown in the arrow among Fig. 1 17, the heat that forms when taking away rotor 15 work, so outside water cooler 14 cooperatively interacts with the independent cooling system that constitutes rotor ventilation, thereby more effectively reduced rotor 15 temperature rises, realized effective control of motor temperature, just provide reliable guidance for submersible pump further maximizes.The water cooling circulation is a basic cooling procedure among the present invention, air cooling circulation and water cooling circulation is used motor 10 internal heat generation body temperature liters are tended towards stability, evenly, strengthen the air cooling circulation with spiral helicine groove 151 between the stator and rotor air gap especially in the present invention, thereby reduce rotor temperature rise.
Shown in Fig. 1,2,3,5,6, adopt 4 utmost points or 6 pole motors, motor 10 has independent rotating shaft respectively with water pump 30, between machine shaft 11 and water pump rotating shaft 31, planetary reducer 20 is set, described planetary reducer 20 is with the wheel shaft 211 and machine shaft 11 shaft couplings of its sun gear 21, with the central shaft hole 221 and water pump rotating shaft 31 shaft couplings of planetary wheel carrier 22.So-called motor 10 has independent rotating shaft respectively with water pump 30 and is meant that motor 10 and water pump 30 do not have a shared axle among the present invention, and motor 10 has oneself independently rotating shaft respectively with water pump 30, and both connect the back transfer torques by planetary reducer 20.
As shown in Figure 4, motor thrust bearing 12 on the described motor 10 adopts two flanged thrust bearing end caps 70, the flange position of thrust bearing end cap 70 links to each other with planetary reducer 20 with motor 10 respectively, the stage casing of described thrust bearing end cap 70 is a necking down shape structure, and its necking down position and motor thrust bearing 12 fit.So-called pair of flange-type structure is meant that thrust bearing end cap 70 has two mounting flanges, a flange is used for being connected with electric machine casing, one is used for being connected with gear reduction box, the necking down position is between two flanges, the inside at necking down position is exactly in fact a bearing pedestal that is used for fixing thrust bearing end cap 70, this structure is provided with, make working flow can directly be cooled to the shell at motor thrust bearing 12 places, utilize the pumping current to contact its stage casing, the cooling motor thrust bearing 12 effectively, improve the radiating effect of motor thrust bearing 12, avoid occurring the too high fault of bearing temperature.Improve functional reliability, avoid occurring the too high fault of bearing temperature, as shown in Figure 4, the layout of motor bearings should be able to be born the thrust that rotor weight forms, and the monolateral out-of-balance force of electromagnetism.
Referring to Fig. 1,2,3, the wheel shaft 211 of described machine shaft 11 and sun gear 21 and between the central shaft hole 221 of water pump rotating shaft 31 and planetary wheel carrier 22, be floating type shaft coupling, described floating type shaft coupling comprise machine shaft 11 and wheel shaft 211 and between water pump rotating shaft 31 and central shaft hole 221 for floating type colored part key and key emptying aperture cooperate, the middle part end face binding site of described sun gear 21 and planetary wheel carrier 22 has floating fulcrum 23.The movable operation principle that cooperates is: described sun gear 21 cooperates with three planetary gear gears, and backlash is arranged, and axially has floating fulcrum 23 spacing, avoid sun gear to fall down, so sun gear 21 floats.At the input of sun gear 21, adopt spline to be connected between the wheel shaft 211 of machine shaft 11 and sun gear 21, backlash is also arranged, and constitute the connection of floating; In like manner,, adopt spline to be connected between the central shaft hole 221 of planetary wheel carrier 22 and the water pump rotating shaft 31, backlash is also arranged, and constitute the connection of floating at the clutch end of planetary wheel carrier 22.This plug-in type floating structure, the functional reliability problem that on the one hand can avoid rigid attachment to bring, on the other hand, make its each other assembling and dismantle very conveniently, be easy to maintenance, care and maintenance.
As shown in Figure 1, two cover water pump journal bearings 40,50 and a cover water pump thrust bearing 60 are set in described water pump rotating shaft 31, it is distolateral that wherein a cover water pump journal bearing 50 is arranged on the water outlet of impeller 32, and another set of water pump journal bearing 40 is arranged on an end of the central shaft hole 221 of the close planetary wheel carrier 22 in the water pump rotating shaft 31.Adopt this bearings scheme, can shorten pump end cantilever effectively, strengthen the rigidity of pump shaft, improve 60 life-spans of thrust bearing, so this structure can be with the horizontal use of electric pump, machine shaft 11 is with water pump rotating shaft 31 and is horizontally disposed with.Three Bearing Installation in decelerator and the water pump adopt oil to cool off and lubricate in the die cavity of sealing.During 11 rotations of water pump thrust bearing, play the effect of pumping cutting oil, cutting oil circulated in the die cavity of sealing, transmit heat, and form oil with the outer swiftly flowing current of die cavity through the die cavity wall---water cooling.Among the figure with arrow show respectively in the decelerator that coolant flows to 26, coolant flows to 35 in working flow 34 and the pump body.
The present invention also can adopt the high-level installed vertical mode of motor in concrete the enforcement, and promptly described machine shaft 11 is upright with water pump rotating shaft 31, and motor 10 is positioned at the top, and water pump 30 is positioned at the bottom.
Shown in Fig. 2,3, the housing inside and outside wall of described planetary reducer 20 is provided with radiating fin 24,25, so just can control and reduce the heat that produces in planetary reducer 20 courses of work effectively.
Three road mechanical seals are set, and the first road mechanical seal 90 is positioned at the shaft extension end of water pump rotating shaft 31, is used to prevent that working flow from entering the oil pocket of cutting oil; The second road mechanical seal 100 is positioned at the die cavity of the cutting oil of water pump rotating shaft 31, prevents that cutting oil intensification expansion from spilling; The 3rd road mechanical seal 110 is positioned at the shaft extension end of machine shaft 11, prevents that cutting oil from entering in the motor cavity.Adopt three road mechanical seals can strengthen the sealing effectiveness of submersible pump, improve the life-span of seal, therefore the fail safe that has also improved submersible pump simultaneously.
Because the combination of high-speed electric expreess locomotive and planetary reducer makes its diameter diminish, thereby in the present embodiment, the diffuser angle of flare can be less than 12 °, the same specification submersible pump diffuser angle of flare with planetary gear speed-reduction is not about 25 ° to 30 °, after the diffuser angle of flare reduces, pumps water stream is better through motor outer surface cleanliness, has reduced flow resistance loss, can improve the unit efficiency of electric pump device effectively.
Adopt hermetically sealed motor, coolant is transformer oil or inert gas in the motor cavity, as nitrogen.The working flow of motor cavity and extraneous pumping is isolated mutually.
Claims (10)
1, a kind of large-scale electric underwater pump, it is characterized in that: motor (10) inside is provided with the air cooling circulation of centrifugal fan (13) formation and the water cooler (14) of motor (10) shell setting is formed an empty water cooling system, rotor (15) surface in described motor (10) is provided with spiral helicine groove (151), and the pitch of groove (151) is 0.1～0.2 times of rotor (15) diameter.
2, large-scale electric underwater pump according to claim 1 is characterized in that: described groove (151) adopts rectangular thread, and the ratio of width to height of screw thread is 2: 1.
3, large-scale electric underwater pump according to claim 1, it is characterized in that: described motor (10) is 4 utmost points or 6 utmost point motors, motor (10) has independent rotating shaft respectively with water pump (30), between machine shaft (11) and water pump rotating shaft (31), planetary reducer (20) is set, described planetary reducer (20) is with the wheel shaft (211) of its sun gear (21) and machine shaft (11) shaft coupling, with the central shaft hole (221) of planetary wheel carrier (22) and water pump rotating shaft (31) connection car by.
4, large-scale electric underwater pump according to claim 3, it is characterized in that: the motor thrust bearing (12) on the described motor (10) adopts two flanged thrust bearing end caps (70), the flange position of thrust bearing end cap (70) links to each other with planetary reducer (20) with motor (10) respectively, the stage casing of described thrust bearing end cap (70) is a necking down shape structure, and its necking down position and motor thrust bearing (12) fit.
5, large-scale electric underwater pump according to claim 3, it is characterized in that: for floating type shaft coupling, described floating type shaft coupling is that floating type colored part key and the key emptying aperture by setting between the central shaft hole (221) of the wheel shaft (211) of machine shaft (11) and described sun gear (21) and water pump rotating shaft (31) and described planetary wheel carrier (22) cooperates formation between the central shaft hole (221) of the wheel shaft (211) of described machine shaft (11) and sun gear (21) and water pump rotating shaft (31) and planetary wheel carrier (22).
6, large-scale electric underwater pump according to claim 5 is characterized in that: described sun gear (21) has floating fulcrum (23) with the middle part end face binding site of planetary wheel carrier (22).
7, large-scale electric underwater pump according to claim 3, it is characterized in that: two cover water pump journal bearings (40,50) and a cover water pump thrust bearing (60) are set in described water pump rotating shaft (31), wherein to be arranged on the water outlet of impeller (32) distolateral for a cover water pump journal bearing (50), and another set of water pump journal bearing (40) is arranged on an end of the central shaft hole (221) of the close planetary wheel carrier (22) in the water pump rotating shaft (31).
8, large-scale electric underwater pump according to claim 7 is characterized in that: the inside and outside wall of housing of described planetary reducer (20) is provided with radiating fin (24,25).
9, large-scale electric underwater pump according to claim 3, it is characterized in that: three road mechanical seals are set on the described submersible pump, the first road mechanical seal (90) is positioned at the shaft extension end of water pump rotating shaft (31) away from planetary reducer (20), the second road mechanical seal (100) is positioned at the die cavity of the cutting oil of water pump rotating shaft (31), and the 3rd road mechanical seal (110) is positioned at the shaft extension end that the wheel shaft (211) of machine shaft (11) and described sun gear (21) links.
10, large-scale electric underwater pump according to claim 3 is characterized in that: the diffuser angle of flare of described water pump (30) is less than 12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510040139XA CN100479297C (en) | 2005-05-20 | 2005-05-20 | Large submersible electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510040139XA CN100479297C (en) | 2005-05-20 | 2005-05-20 | Large submersible electric pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1694335A CN1694335A (en) | 2005-11-09 |
| CN100479297C true CN100479297C (en) | 2009-04-15 |
Family
ID=35353179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510040139XA Expired - Fee Related CN100479297C (en) | 2005-05-20 | 2005-05-20 | Large submersible electric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100479297C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033393A (en) * | 2013-03-04 | 2014-09-10 | 上海凯泉泵业（集团）有限公司 | Nuclear power AP1000 (Advanced Passive Pressurized Water Reactor) waste heat removal pump |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210564B (en) * | 2006-12-25 | 2010-07-14 | 上海东方泵业(集团)有限公司 | Vertical axial flow pump equipped with direct connection type water cooling motor |
| CN102361367B (en) * | 2011-11-01 | 2013-04-24 | 南京科远控制工程有限公司 | Submerged type electric actuating mechanism |
| CN102758778B (en) * | 2012-07-30 | 2015-03-25 | 宁波巨神制泵实业有限公司 | Core-pulling type submersible pump and mounting method thereof |
| SG11201501908WA (en) | 2012-09-12 | 2015-05-28 | Fmc Technologies | Coupling an electric machine and fluid-end |
| EP2901017B1 (en) | 2012-09-12 | 2020-06-03 | FMC Technologies, Inc. | Up-thrusting fluid system |
| US9954414B2 (en) | 2012-09-12 | 2018-04-24 | Fmc Technologies, Inc. | Subsea compressor or pump with hermetically sealed electric motor and with magnetic coupling |
| CA2894739A1 (en) | 2012-09-12 | 2014-03-20 | Fmc Technologies, Inc. | Subsea multiphase pump or compressor with magnetic coupling and cooling or lubrication by liquid or gas extracted from process fluid |
| US10221662B2 (en) | 2013-03-15 | 2019-03-05 | Fmc Technologies, Inc. | Submersible well fluid system |
| CN103795185A (en) * | 2014-02-17 | 2014-05-14 | 扬州大学 | Method for determining optimal operation number of draught fans of open type ventilation system of large lamp bulb tubular pump unit |
| CN104734387A (en) * | 2015-04-13 | 2015-06-24 | 蓝深集团股份有限公司 | Motor applicable to large-sized water pumps and having good cooling structure |
| US11975829B2 (en) * | 2019-07-23 | 2024-05-07 | Panasonic Intellectual Property Management Co., Ltd. | Motor unit and aircraft |
| CN113883069B (en) * | 2021-09-09 | 2024-01-12 | 鑫磊压缩机股份有限公司 | Multistage compressor adopting magnetic planetary rotor shafting to accelerate |
-
2005
- 2005-05-20 CN CNB200510040139XA patent/CN100479297C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033393A (en) * | 2013-03-04 | 2014-09-10 | 上海凯泉泵业（集团）有限公司 | Nuclear power AP1000 (Advanced Passive Pressurized Water Reactor) waste heat removal pump |
| CN104033393B (en) * | 2013-03-04 | 2017-12-22 | 上海凯泉泵业（集团）有限公司 | A kind of nuclear power AP1000 residual heat removal pumps |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1694335A (en) | 2005-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100479297C (en) | Large submersible electric pump | |
| CN201113681Y (en) | Composite cooling structure for driving motor | |
| CN100547881C (en) | A kind of motor stator water-cooling method and device | |
| CN1989679B (en) | Dynamoelectric machine with embedded heat exchanger and method for cooling dynamoelectric machine | |
| WO2018153001A1 (en) | Motor cooling structure, power motor and electric drive system | |
| CN206237252U (en) | For the water-cooling structure of rotor | |
| EP4012899A1 (en) | Oil-water double-cooling electric drive assembly, and new energy automobile | |
| EP2802774B1 (en) | Cooling system of a wind turbine | |
| CN211530941U (en) | Shale oil gas electricity drives high power density inverter motor for fracturing pump | |
| CN201925177U (en) | Submersible through-flow pump with planetary gear reducing mechanism | |
| CN209823568U (en) | Motor with synchronously cooled stator and rotor | |
| CN111211640A (en) | Shale oil gas electricity drives high power density inverter motor for fracturing pump | |
| CN110098691B (en) | Motor with synchronously cooled stator and rotor | |
| CN201215920Y (en) | Water cooling seat for stator of driving motor | |
| CN202949323U (en) | Main coolant pump motor for second-generation nuclear power station | |
| CN207339513U (en) | Motor case with cooling device | |
| CN210317773U (en) | Vertical centrifugal pump for primary loop of lead-bismuth reactor | |
| CN212033943U (en) | Self-circulation heat dissipation device for motor of submersible electric pump | |
| CN2708007Y (en) | Large-scale electric diving pump | |
| CN1693710A (en) | Large diving electric pump | |
| CN1693714A (en) | Large diving electric pump | |
| CN209730991U (en) | A kind of empty oily combination cooling electric moto used in compressor | |
| CN206611296U (en) | A kind of water-cooling motor | |
| CN205638948U (en) | Nuclear power station residual heat removal pump | |
| CN209510712U (en) | A kind of pump shaft sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Changfeng Shuangfeng Economic Development Zone, Hefei City, Anhui province 231131 Patentee after: Hefei Hengda Jianghai Pump Industry Co., Ltd. Address before: 230011 No. 555 Changjiang East Road, Anhui, Hefei Patentee before: Hefei Sanyi Jianghai Pump Industry Co., Ltd. |
|
| 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: 20090415 Termination date: 20160520 |