CN2708007Y - Large-scale electric diving pump - Google Patents
Large-scale electric diving pump Download PDFInfo
- Publication number
- CN2708007Y CN2708007Y CN 200420062005 CN200420062005U CN2708007Y CN 2708007 Y CN2708007 Y CN 2708007Y CN 200420062005 CN200420062005 CN 200420062005 CN 200420062005 U CN200420062005 U CN 200420062005U CN 2708007 Y CN2708007 Y CN 2708007Y
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- shaft
- water pump
- scale electric
- motor
- rotating shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a large-scale electric diving pump which is characterized in that a 4 poles or 6 poles electromotor is adopted. A planetary gear speed reducer provided between the rotary shaft of the electromotor and the rotary shaft of the diving pump is shaft-coupled with the rotary shaft of the electromotor through the sun wheel shaft of the planetary gear speed reducer and is shaft-coupled with the rotary shaft of the diving pump through the central shaft hole of the planetary wheel carrier. As the utility model is provided with a speed reducer, the diving pump obtains low speed and large torque. Compared with the coaxial type (an electromotor being coaxial with a pump) large-scale electric diving pump in the prior art, the efficiency of the large-scale electric diving pump of the utility model is increased by more than 5 percent, the power factor is enhanced by more than 20 percent, and the weight is reduced by 50 percent.
Description
Technical field:
The utility model relates to Submerged Motor Pumps, and the power of more specifically saying so reaches 250KW, bore and reaches that 1m is above, the large-scale electric underwater pump of pump rotary speed below 500r/min.
Background technique:
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 20 °, increase divergence loss.
Summary of the invention:
Technical problem to be solved in the utility model is to avoid existing deficiency in the above-mentioned prior art, and a kind of volume that can effectively control motor is provided, and can keep the large-scale electric underwater pump of higher efficient of motor and power factor.
The technological scheme that the utility model technical solution problem is adopted is:
Structural feature of the present utility model is to adopt 4 utmost points or 6 pole motors, motor and water pump have independent rotating shaft respectively, between machine shaft and water pump rotating shaft, plane table thermoconductivity meter is set, described plane table thermoconductivity meter is with its sun gear wheel shaft and machine shaft shaft coupling, with planetary wheel carrier central shaft hole and water pump rotating shaft shaft coupling.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The utility model makes water pump obtain low speed, big torque by retarder is set.Compare with existing coaxial type (motor is coaxial with water pump) large-scale electric underwater pump, its efficient improves more than 5%, and power factor improves more than 20%, and weight reduces 50%.
The speed ratio of plane table thermoconductivity meter can in very large range be selected in design in the utility model, helps optimizing selecting ripe hydraulic model for use, raises the efficiency, improves cavitation resistive property.
Accompanying drawing is the utility model structural representation.
Number in the figure: the cooling medium flow direction, 13 first road mechanical seals, 14 second road mechanical seals, 15 the 3rd road mechanical seals, 16 sun gears, 17 planetary wheel carriers, 18 working flows, the interior cooling medium flow direction of 19 pump bodies, 20 radial bearings in 1 motor, 2 retarders, 3 water pumps, 4 machine shafts, 5 motor thrust-bearings, 6 thrust-bearing end caps, 7 petcocks, 8 radiating fins, 9 water pump rotating shafts, 10 impellers, 11 water pump thrust-bearings, 12 retarders
Embodiment: adopt 4 utmost points or 6 pole motors in the present embodiment, motor 1 has independent rotating shaft respectively with water pump 3, between machine shaft 4 and water pump rotating shaft 9, plane table thermoconductivity meter 2 is set, plane table thermoconductivity meter 2 is with the wheel shaft and machine shaft 4 shaft couplings of its sun gear 16, with the central shaft hole and water pump rotating shaft 9 shaft couplings of planetary wheel carrier 17.
In concrete the enforcement, the vertical structure that can adopt the motor height to put, machine shaft 4 is upright with water pump rotating shaft 9, and motor 1 is positioned at the top, and water pump 3 is positioned at the bottom.Also can adopt horizontal type structure, machine shaft 4 is with water pump rotating shaft 9 and is horizontally disposed with.
In order to guarantee functional reliability, improve performance, to increase work efficiency, can also adopt following concrete structure setting:
Adopt hermetically sealed motor, cooling medium is transformer oil or inert gas in the motor cavity, as nitrogen.The working flow of motor cavity and extraneous pumping is isolated mutually.
The layout of motor bearings should be able to be born the thrust that rotor weight forms, and the monolateral unbalanced force of electromagnetism.Adopt two flange thrust-bearing end caps 6, the stage casing of thrust-bearing end cap 6 is a neck structure, and its neck and motor thrust-bearing 5 fit.This structure is provided with, but makes working flow directly cooled machine thrust-bearing 5 place shells, improves the radiating effect of motor thrust block axle 5, improves functional reliability.
For the ease of maintenance, on thrust-bearing end cap 6, the bottom that is positioned at the motor cavity is provided with gas-liquid petcock 7, is used to discharge the condensation hydrops that motor internal may exist, or changes the motor internal cooling medium.
Between the wheel shaft of machine shaft 4 and sun gear 16, and between the central shaft hole of water pump rotating shaft 9 and planetary wheel carrier 17, adopt floating type coupling respectively, be plug in construction.Can avoid on the one hand rigidity to connect the functional reliability problem that may bring, on the other hand, make its each other assembling and dismantle very conveniently, be easy to maintenance, care and maintenance.
Three road mechanical seals are set, and the first road mechanical seal 13 is positioned at the shaft extension end of water pump, is used to prevent that working flow from entering the oil pocket of cutting oil; The second road mechanical seal 14 is positioned at the die cavity of cutting oil, prevents that cutting oil intensification expansion from spilling; The 3rd road mechanical seal 15 is positioned at motor shaft extension end, prevents that cutting oil from entering in the motor cavity.
Because the diameter of high-speed electric expreess locomotive and plane table thermoconductivity meter is little, thereby in the present embodiment, the diffuser angle of flare can greatly reduce the divergence loss of water pump less than 12 °.
Shown in the figure,, radiating fin 8 is set on the shell of retarder in order to improve radiating effect.
In addition, because of water pump has an independently water pump rotating shaft 9, in the present embodiment, two cover radial bearings and a cover water pump thrust-bearing 11 are set in water pump rotating shaft 9, wherein to be arranged on the water outlet of impeller 10 distolateral for a cover radial bearing 20, this radial bearing 20 is near water pump vanes, makes the jib-length of stretching out of impeller be reduced to the shortlyest, and this design makes it can adopt horizontal operation.Three Bearing Installation in retarder 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 retarder that cooling medium flows to 12, cooling medium flows to 19 in working flow 18 and the pump body.
Claims (10)
1, large-scale electric underwater pump, it is characterized in that adopting 4 utmost points or 6 pole motors, motor (1) has independent rotating shaft respectively with water pump (3), between machine shaft (4) and water pump rotating shaft (9), plane table thermoconductivity meter (2) is set, described plane table thermoconductivity meter (2) is with the wheel shaft and machine shaft (4) shaft coupling of its sun gear (16), with the central shaft hole and water pump rotating shaft (9) shaft coupling of planetary wheel carrier (17).
2, large-scale electric underwater pump according to claim 1 is characterized in that being provided with two cover radial bearings and a cover water pump thrust-bearing (11) in described water pump rotating shaft (9), wherein to be arranged on the water outlet of impeller (10) distolateral for a cover radial bearing (20).
3, large-scale electric underwater pump according to claim 1 is characterized in that the vertical structure that adopts the motor height to put, and machine shaft (4) be upright with water pump rotating shaft (9), and motor (1) is positioned at the top, bottom water pump (3) is positioned at.
4, large-scale electric underwater pump according to claim 1 and 2 is characterized in that adopting horizontal type structure, and machine shaft (4) and water pump rotating shaft (9) are and are horizontally disposed with.
5, large-scale electric underwater pump according to claim 1 is characterized in that adopting hermetically sealed motor (1), and cooling medium is inert gas or transformer oil in the motor cavity.
6, large-scale electric underwater pump according to claim 1 is characterized in that adopting two flange thrust-bearing end caps (6), and the stage casing of described thrust-bearing end cap (6) is a neck structure, and its neck and motor thrust-bearing (5) fit.
7, large-scale electric underwater pump according to claim 1 is characterized in that on described thrust-bearing end cap (6) bottom that is positioned at the motor cavity is provided with gas-liquid petcock (7).
8, large-scale electric underwater pump according to claim 1 is characterized in that between the wheel shaft of machine shaft (4) and sun gear (16), and between the central shaft hole of water pump rotating shaft (9) and planetary wheel carrier (17), adopts floating type coupling respectively.
9, large-scale electric underwater pump according to claim 1, it is characterized in that being provided with three road mechanical seals, the first road mechanical seal (13) is positioned at the shaft extension end of water pump, and the second road mechanical seal (14) is positioned at the die cavity of cutting oil, and the 3rd road mechanical seal (15) is positioned at motor shaft extension end.
10, large-scale electric underwater pump according to claim 1 is characterized in that the diffuser angle of flare is less than 12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062005 CN2708007Y (en) | 2004-06-19 | 2004-06-19 | Large-scale electric diving pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062005 CN2708007Y (en) | 2004-06-19 | 2004-06-19 | Large-scale electric diving pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708007Y true CN2708007Y (en) | 2005-07-06 |
Family
ID=34852023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420062005 Expired - Fee Related CN2708007Y (en) | 2004-06-19 | 2004-06-19 | Large-scale electric diving pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708007Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758778A (en) * | 2012-07-30 | 2012-10-31 | 宁波巨神制泵实业有限公司 | Core-pulling type submersible pump and mounting method thereof |
| CN104514730A (en) * | 2014-12-26 | 2015-04-15 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
-
2004
- 2004-06-19 CN CN 200420062005 patent/CN2708007Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758778A (en) * | 2012-07-30 | 2012-10-31 | 宁波巨神制泵实业有限公司 | Core-pulling type submersible pump and mounting method thereof |
| CN104514730A (en) * | 2014-12-26 | 2015-04-15 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |