CN101429942A - Large-scale planet gear submersible electric pump - Google Patents
Large-scale planet gear submersible electric pump Download PDFInfo
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- CN101429942A CN101429942A CNA2008101630968A CN200810163096A CN101429942A CN 101429942 A CN101429942 A CN 101429942A CN A2008101630968 A CNA2008101630968 A CN A2008101630968A CN 200810163096 A CN200810163096 A CN 200810163096A CN 101429942 A CN101429942 A CN 101429942A
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- bearing
- planet gear
- submersible electric
- electric pump
- bearing support
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Abstract
The invention discloses a large planet gear submersible electric pump, which mainly comprises a water pump (1), a motor (2) and a planet gear drive mechanism (3), wherein a lower section of a motor rotating shaft is provided with a bearing II (6) and a bearing pedestal II (5), and ganged with a sun gear of the planet gear drive mechanism (3) which is arranged inside a planet gear box (4). The large planet gear submersible electric pump is characterized in that the bearing II (6) and the bearing pedestal II (5) on the lower end of the motor rotating shaft are arranged outside a box body of the planet gear box (4), and the outside refers to the fact that the outer wall of the bearing pedestal is exposed. The large planet gear submersible electric pump has the advantages that because the bearing II (6) and the bearing pedestal II (5) on the lower end of the motor rotating shaft are arranged outside the box body of the planet gear box (4) and the outer wall of the bearing pedestal II (5) is exposed and can directly contact running water in a flow passage for cooling, and the bearing II (6) on the lower end of the motor rotating shaft is well protected, thereby the service life of the bearing is prolonged.
Description
Technical field:
The present invention relates to Submerged Motor Pumps, especially relate to a kind of large-scale electric underwater pump, specifically is a kind of large-scale electric underwater pump that is provided with epicyclic reduction gear unit between motor and water pump.
Background technique:
In the prior art, large-scale electric underwater pump generally can be divided into two kinds, and a kind of is that water pump is the large-scale electric underwater pump of coaxial setting with motor, and another kind is the large-scale electric underwater pump that is provided with epicyclic reduction gear unit between water pump and motor.
A kind of large-scale electric underwater pump in back, its power of motor is generally all more than 250KW, the runner bore below 500r/min, is introduced the planetary gear speed-reduction transmission device at 1M and above, pump rotary speed between motor and water pump, mainly be to make high-speed electric expreess locomotive drive the low speed water pump.The drive mechanism relation of this kind large-scale electric underwater pump is, water pump and motor are respectively equipped with independently rotating shaft, between machine shaft and water pump rotating shaft, be connected with epicyclic reduction gear unit, axis hole in the epicyclic reduction gear unit and water pump rotating shaft shaft coupling, the sun gear in the epicyclic reduction gear unit and machine shaft shaft coupling.Therefore, this structural arrangements have make that motor volume dwindles much, weight saving 40%, power factor improve 17.5%, unit efficiency improves the advantage more than 13.5%.But, bilge construction is provided with or has certain defective within it, because of its epicyclic reduction gear unit and with this device in the sun gear shaft coupling, the bearing of machine shaft lower end and bearing support are arranged on going up in the depression of epicyclic gearbox, filled with machine oil in the epicyclic gearbox, be in operation, oil temperature in the gear-box is very high, the bearing of machine shaft lower end and bearing support are in the unfavorable position in the depression on the epicyclic gearbox, make the bearing and the bearing support of machine shaft lower end be subjected to the interior thermal radiation of epicyclic gearbox continuously, and the resistance to heat of bearing is lower, and continuous high-heating radiation will inevitably be produced and infringement bearing.In service in real work, because Submerged Motor Pumps is mainly with draining flooded fields and doing drought, its operation generally all is ground running continuously in tens of days even in continuous many days, the continuous running of planetary gear set causes gear friction heat savings superposition, make the oil temperature in the gear-box rise, the demonstration of control table oil temperature instrument can reach more than 120 ℃ even 120 ℃, and the limiting temperature that the bearing of machine shaft lower end can bear generally is 95 ℃, this has just caused the very big infringement to bearing, shortens bearing working life; Simultaneously, because Submerged Motor Pumps is the vertical-type installation and operation, the weight of whole rotor and operating load amount are that the bearing by the machine shaft lower end carries, so the load of the bearing of machine shaft lower end is excessive, and also can be to the infringement of machine shaft bottom end bearing; Also have, the bearing of machine shaft upper end tens of days turned round even continuously at continuous many days can produce continuous heating, the bearing and the bearing support of machine shaft upper end are in the electric machine casing, radiating effect is poor, long-term accumulation of heat can produce infringement to the machine shaft bearing, and shortened the working life of bearing.Above-mentioned because of bearing is in the reason of several respects of unfavorable position, become the deadly defect of large-scale planet gear submersible electric pump.
Summary of the invention:
The technical problem to be solved in the present invention is, overcomes the defective that exists in the above-mentioned prior art, provide a kind of and can avoid high temperature oil in the gear-box the infringement of the bearing of machine shaft lower end, thus the large-scale planet gear submersible electric pump that prolongs the working life of bearing.
Technical solution of the present invention is that a kind of large-scale planet gear submersible electric pump with following structure is provided.
A kind of large-scale planet gear submersible electric pump, mainly include water pump, motor, planetary type gear transmission unit, described planetary type gear transmission unit is arranged in the epicyclic gearbox, it is characterized in that: be arranged on the outside of described planetary pinion box body with the matching used bearing support II of the bearing I I of described machine shaft lower end, described outside is meant that the outer wall of described bearing support is exposed.
After adopting above structure, compared with prior art, large-scale planet gear submersible electric pump of the present invention has the following advantages:
Because the outside that the bearing and the bearing support of machine shaft lower end is arranged on the planetary pinion box body; machine shaft bottom end bearing II and bearing support II are shifted out in the depression of gear case body with high temperature; make the outer wall of bearing support II expose out; the outer wall of bearing support II is exposed can directly to be contacted with the flowing water in the runner; make the cold and hot exchanged form of flowing water by bearing support II in the runner; the heat that continuous high speed swivel bearing II produces is taken away; the infringement that the interior recess of having avoided original bearing I I to be in gear case body is produced bearing I I by the continuous high temperature radiation of the high temperature oil in the gear-box; adopt the flowing water in the runner to cool off; bearing I I to the machine shaft lower end has played good protection, thereby has prolonged the working life of machine shaft bottom end bearing II.This new mode that machine shaft bottom end bearing II is cooled off has solved the problem how better machine shaft bottom end bearing II in the large-scale planet gear submersible electric pump to be cooled off preferably.
As improvement, the upper end of described bearing support II is the great circle dish type, and is middle for indent is hollow cylindrical, and the lower end is the great circle dish type and links into an integrated entity with the first half of gear housing.This shaped design can make the flowing water in bearing support II and the runner that bigger area of contact is arranged, and makes its better effects if that cools.
As improvement, described planetary pinion box body is divided into the first half and Lower Half, and the described first half and bearing support II connect as one, and described Lower Half and water pump cover are fastenedly connected.This structure convenient installation or maintenance to planetary gear set.
As improvement, the bearing I I of described machine shaft lower end is set to two to three.This structure height is put; solved preferably because Submerged Motor Pumps is the vertical-type installation and operation; the weight of whole rotor and operating load amount are that the bearing I I by the machine shaft lower end carries; the load of the bearing I I of machine shaft lower end is excessive; bearing I I is set to two to three; the excessive load of the bearing I I of machine shaft lower end is disperseed, and II is a kind of better protect to the machine shaft bottom end bearing, and prolonged the working life of bearing I I.
As improvement, matching used bearing support I is arranged on described electric machine casing top with described machine shaft upper end bearing I, and the outer wall of described bearing support I is exposed.This set, the outer wall of bearing support is exposed can directly to be contacted with the flowing water in the runner, flowing water in the runner is taken away the heat that the continuous high speed swivel bearing produces by the mode of the cold and hot exchange of bearing support, avoided of the infringement of the accumulation heat of running generation continuously bearing.
As improvement, the bearing support I of described machine shaft upper end is arranged to the upper end and is the great circle dish type, and middle outer wall indent is hollow cylindrical, and the lower end is the great circle dish type, and its central shaft is hollow " worker " font to section.This shaped design can make the flowing water in bearing support and the runner that bigger area of contact is arranged, and makes its better effects if that cools.
As improvement, exposed not being meant all of the outer wall of described bearing support II (5) exposed, and also is provided with at the radially indent position of described bearing support II (5), is used to place little cavity body of ball float of the warning usefulness of being soaked in the Submerged Motor Pumps pump housing.This structure setting can make in a single day to occur immersion in the large-scale planet gear submersible electric pump pump housing, and ball float immediately sends alarm signal to operating console, makes whole large-scale planet gear submersible electric pump operation safer.
Description of drawings:
Fig. 1 is the large-scale planet gear submersible electric pump overall structure schematic representation of prior art;
Fig. 2 large-scale planet gear submersible electric pump overall structure of the present invention schematic representation;
Fig. 3 is the machine shaft bottom end bearing seat II axial section structural representation of prior art;
Fig. 4 is a machine shaft bottom end bearing seat II axial section structural representation of the present invention;
Fig. 5 is the machine shaft upper shaft bearing I axial section structural representation of prior art;
Fig. 6 is a machine shaft upper shaft bearing I axial section structural representation of the present invention.
Shown in the figure: 1, water pump, 2, motor, 3, planetary type gear transmission unit, 4, gear-box, 41, the gear case body first half, 42, the gear case body first half, 5, bearing support II, 6, bearing I I, 7, bearing support I, 8, bearing I.
Embodiment:
Below in conjunction with the drawings and specific embodiments large-scale planet gear submersible electric pump of the present invention is described further:
Fig. 1 is the large-scale planet gear submersible electric pump overall structure schematic representation of prior art, Fig. 2 large-scale planet gear submersible electric pump overall structure of the present invention schematic representation.Compare from Fig. 1 and Fig. 2, large-scale planet gear submersible electric pump of the present invention, mainly include water pump 1, motor 2, planetary type gear transmission unit 3, after bearing 6 and bearing support 5 are passed through in described motor 1 rotating shaft lower end, with the sun gear of described planetary type gear transmission unit 3 be shaft coupling, described planetary type gear transmission unit 3 is arranged in the epicyclic gearbox 4, compare from Fig. 1 and Fig. 2, the difference of large-scale planet gear submersible electric pump of the present invention and existing large-scale planet gear submersible electric pump mainly is: the bearing 6 of motor 2 rotating shaft lower ends and bearing support 5 are arranged on the outside of described epicyclic gearbox 4 casings, and described outside is meant that the outer wall of described bearing support 5 is exposed.The outer wall of bearing support 5 is exposed can directly to be contacted with the flowing water in the runner; flowing water in the runner is taken away the heat that continuous high speed swivel bearing 6 produces by the mode of the cold and hot exchange of bearing support; avoided of the infringement of the high temperature oil of original bearing 6 in gear-box 4 to bearing 5; adopt the flowing water in the runner to cool off; bearing 6 to the machine shaft lower end has played good protection, thereby has prolonged the working life of machine shaft bottom end bearing 6.
Fig. 3 is the bearing support 5 axial section structural representations of prior art, and Fig. 4 is bearing support 5 axial section structural representations of the present invention.Contrast from Fig. 3 and Fig. 4, can be clear that on the shape of bearing support 5 and original bearing support 5 among the present invention and the structure bigger difference is arranged, bearing support 5 upper ends among the present invention are the great circle dish type, the centre is hollow cylindrical for indent, be that bearing 6 just is mounted in the columniform centre in the sky, the lower end is the great circle dish type and links into an integrated entity with the first half 41 of gear-box 4 casings.This shaped design can make the interior flowing water of bearing support 5 and runner that bigger area of contact is arranged, and makes its better effects if that cools.
Simultaneously, from the contrast of Fig. 3 and Fig. 4, also can clearly illustrate, epicyclic gearbox 4 casings among the present invention are divided into the first half 41 and Lower Half 42, the described first half 41 connects as one with bearing support 5, between the bearing hole of bearing support 5 and gear-box, adopt flange seal, prevent that the machine oil in the gear-box 4 from overflowing to bearing 6 by the bearing support mesopore, described Lower Half 42 is fastenedly connected with water pump 1 housing.This structure convenient installation or maintenance to planetary gear set.
Because Submerged Motor Pumps is the vertical-type installation and operation, the weight of whole motor 2 rotors and operating load amount are that the bearing 6 by the machine shaft lower end carries, this structural relation makes that the load of bearing of machine shaft lower end is excessive, for the excessive load of the bearing 6 that makes the machine shaft lower end disperses, the present invention is set to two to three to the bearing 6 of machine shaft lower end.Present embodiment is set to 3.Being provided with like this is to be a kind of better protect to machine shaft bottom end bearing 6, makes obtain prolonging the working life of bearing 6.
Fig. 5 is the machine shaft upper shaft bearing I axial section structural representation of prior art, and Fig. 6 is a machine shaft upper shaft bearing I axial section structural representation of the present invention.Can clearly illustrate also that from the contrast of Fig. 5 and Fig. 6 the upper end of the machine shaft upper shaft bearing I7 among the present invention is the great circle dish type, middle the lower end is the great circle dish type for indent is hollow cylindrical, and its axial section is " worker " font of hollow.The bearing I 8 and the bearing support I7 of machine shaft upper end are arranged on described electric machine casing top, and the outer wall of described bearing support I7 is exposed.This set, the outer wall of bearing support is exposed can directly to be contacted with the flowing water in the runner, flowing water in the runner is taken away the heat that the continuous high speed swivel bearing produces by the mode of the cold and hot exchange of bearing support, avoided of the infringement of the accumulation heat of running generation continuously bearing.
Exposed not being meant all of the outer wall of described bearing support II5 exposed, and also is provided with at the radially indent position of described bearing support II5, is used to place little cavity body of ball float of the warning usefulness of being soaked in the Submerged Motor Pumps pump housing.When the little cavity body of ball float that is used to place the warning usefulness of being soaked in the Submerged Motor Pumps pump housing is arranged on other positions (as, in the gear-box), so, exposed just can the giving of the outer wall of described bearing support II5 all exposed.
Claims (7)
1, a kind of large-scale planet gear submersible electric pump, include water pump (1), motor (2), planetary type gear transmission unit (3), described planetary type gear transmission unit (3) is arranged in the epicyclic gearbox (4), it is characterized in that: be arranged on the outside of described epicyclic gearbox (4) casing with the matching used bearing support II of rotating shaft bottom end bearing II (6) (5) of described motor, described outside is meant that the outer wall of described bearing support II (5) is exposed.
2, large-scale planet gear submersible electric pump as claimed in claim 1, it is characterized in that: the upper end of described bearing support II (5) is the great circle dish type, middle be hollow cylindrical for the footpath concaves, the lower end is the great circle dish type and links into an integrated entity with the first half (41) of gear-box (4) body.
3, large-scale planet gear submersible electric pump as claimed in claim 1, it is characterized in that: described epicyclic gearbox (4) casing is divided into the first half (41) and Lower Half (42), the described first half (41) connects as one with bearing support II (5), described Lower Half (42) is fastenedly connected with water pump (1) housing, and the described first half is detachable the connection with Lower Half.
4, large-scale planet gear submersible electric pump as claimed in claim 1 or 2 is characterized in that: the bearing I I (6) of described motor (2) rotating shaft lower end is set to two or three.
5, large-scale planet gear submersible electric pump as claimed in claim 4 is characterized in that: the bearing I I (6) of described motor (2) rotating shaft lower end is set to three.
6, large-scale planet gear submersible electric pump as claimed in claim 1, it is characterized in that: be arranged on described motor (2) housing top with described motor (2) rotating shaft upper end bearing I (8) matching used bearing support I (7), the outer wall of described bearing support I (7) is exposed.
7, large-scale planet gear submersible electric pump as claimed in claim 6, it is characterized in that: the bearing support I (7) of described motor (2) rotating shaft upper end is arranged to the upper end and is the great circle dish type, middle is directly to concave to be hollow cylindrical, and the lower end is the great circle dish type, and its axial section is hollow " worker " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101630968A CN101429942A (en) | 2008-12-10 | 2008-12-10 | Large-scale planet gear submersible electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101630968A CN101429942A (en) | 2008-12-10 | 2008-12-10 | Large-scale planet gear submersible electric pump |
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| Publication Number | Publication Date |
|---|---|
| CN101429942A true CN101429942A (en) | 2009-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101630968A Pending CN101429942A (en) | 2008-12-10 | 2008-12-10 | Large-scale planet gear submersible electric pump |
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| CN (1) | CN101429942A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032199A (en) * | 2010-10-08 | 2011-04-27 | 吴声震 | High-torque planetary gear speed-reducing submersible tubular pump |
| 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 |
-
2008
- 2008-12-10 CN CNA2008101630968A patent/CN101429942A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032199A (en) * | 2010-10-08 | 2011-04-27 | 吴声震 | High-torque planetary gear speed-reducing submersible tubular pump |
| 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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Open date: 20090513 |