CN2667783Y - Submersible electric motor - Google Patents
Submersible electric motor Download PDFInfo
- Publication number
- CN2667783Y CN2667783Y CN 200320125952 CN200320125952U CN2667783Y CN 2667783 Y CN2667783 Y CN 2667783Y CN 200320125952 CN200320125952 CN 200320125952 CN 200320125952 U CN200320125952 U CN 200320125952U CN 2667783 Y CN2667783 Y CN 2667783Y
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- motor
- cavity
- capsule
- mechanical seal
- collapsible bag
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Abstract
The utility model provides a submerged motor, in particular being applicable in hot water, comprising a flange, an upper guide bearing setting, a stator, a lower bearing setting, a thrust bearing base and a base, the parts above are orderly connected from top to bottom. A rotor is arranged in a stator, and the thrust bearing is positioned on the thrust bearing base; wherein, top of the upper guide bearing setting is provided with a mechanically sealed cavity, and outside of the cavity is fixedly provided with a capsule; the top of the cavity is provided with a sealing cover, forming an elastic sealing cavity internally provided with a two end mechanism seal; moreover, the upper sealing cover is provided with an oil injection hole and an air discharge hole, and the upper sealing cover is further internally provided with a bearing pad, and a thrust hole assembled with a sand preventing cap in cooperation at the top of the upper sealing cover; besides, a motor flange is mounted outside the elastic sealing cavity, and a gap is reserved between inner diameter of the flange and the capsule. Being capable of a normal running in hot water with 120 DEG C, the utility model avoids the damage caused by the sealing invalidation and the vaporization and scale because of a high temperature.
Description
Technical field
The utility model relates to a kind of submersible motor, the wet diving motor that especially uses under hot water conditions.
Background technology
Known submersible motor, the motor shaft extension partly adopts single mechanical end face seal, and motor internal adopts plain bearing unit, and stator winding adopts the electromagnetic wire of plastic insulation nylon sheath wire.The motor internal of this structure is full of water, and motor is worked in not being higher than 70 ℃ water, because of all being aqueous medium inside and outside the motor, does not have too high requirement for sealing, and the electromagnetic wire of plastic insulation just can satisfy sealing and insulation property.Along with the continuous Application and Development of geothermal resources, water temperature also constantly raises, and general submersible motor just can not adapt to, and industry has been made many effort for this reason.
Chinese patent 97204373.X discloses a kind of well and has matched with immersible pump with well with submersible motor.It is to be assembled by cable cover(ing) 4, end cap 5, " 0 " ring 7 and 12, mechanical seal assembly 8, cable end 9, motor head 10, axle sleeve 11, upper binding head 13, electric machine casing 14, stator jump ring 15, rotor jump ring 16, motor shaft 18, rotor 20, alignment bearing 22, thrust bearing 29, capsule 35, spring 38, thrust shaft block 41 etc.Its rotor adopts more piece rotor 20 and alignment bearing 22 combining structures, has adopted bellows type mechanical seal assembly 8 and stator jump ring 15 structures.
Chinese patent 00263300.0 discloses a kind of cold and hot general efficient pump, is fit to pump the hot water or cold water and uses.It mainly is made up of " C " type fortune tank 12 and the pump housing 1 of concavo-convex seal groove 4, the impeller 2 with bucket-shaped blade 3 and concavo-convex seal groove 4, rubber seal 5, support 6, mechanical seal ring 7, dehydration film 8, motor 9, water inlet 10 and delivery port 11.
But aforesaid known technology all can not well address the problem:
At first, the mechanical seal problem, mechanical seal is exposed to the easy fouling (calcium carbonate, magnesium carbonate, calcium sulfate, magnesium sulfate) in the high temperature underground water, motor internal water vapor volumetric expansion is excessive exceed the respiratory capacity of motor afterbody capsule after, mechanical seal is formed big buffer brake, and these all can make mechanical seal lose efficacy.Causing underground water to enter motor internal also can fouling and damage motor.
Have, the high-temperature evaporation problem of motor internal water can be damaged sliding bearing after water is at high temperature vaporized again, and especially make the motor upper bearing produce dried grinding and damage, and dried the grinding of bearing produces high temperature and can quicken the vaporization of water, causes bigger damage.
Have again, electromagnetic wire heatproof problem, though the electromagnetic wire water resistance of plastic insulation is good, heatproof is low, the highlyest generally is no more than 90 ℃ (hot water temperature+electric machine temperature rises), can't satisfy the requirement of higher water temperature work condition environment.
Summary of the invention
Problem to be solved in the utility model is to overcome the above-mentioned defective that aforementioned techniques exists, and a kind of submersible motor that can normally move under high water temperature work condition environment is provided.
The utility model solves its technical problem and takes following technical scheme to realize, provide a kind of submersible motor according to the utility model, comprise from top to bottom flange connecting successively, the top guide bearing assembling, stator, the lower guide bearing assembling, thrust shaft block and base, rotor is contained in the stator, its rotating shaft is by the top guide bearing assembling, lower guide bearing assembling and thrust bearing carry out radial and axial location, thrust bearing is loaded on the thrust shaft block, it is characterized in that, in the top guide bearing assembling, upper leading axle bearing top is provided with a mechanical seal chamber, install a capsule in its outside, on this top, mechanical seal chamber top cover labyrinth is housed, constitute the elastic packing chamber, and be full of lubricating oil; The close envelope of Double End machinery is housed in the described mechanical seal chamber; At elastic packing chamber external device (ED) motor flange, flange internal diameter and aforesaid capsule leave certain clearance.
The utility model solves its technical problem and can also take following technical scheme further to realize:
Aforesaid submersible motor, wherein, the flexible member of described double mechanical seal is set to bellows.
Aforesaid submersible motor, wherein, described top cover labyrinth internal diameter device bearing shell, and oil filler point and steam vent are set, a sand control cap is packed on the motor shaft, combines with top cover labyrinth;
Aforesaid submersible motor wherein, describedly has two holes at flange middle part, faces the oil filler point and the steam vent of top cover labyrinth, has in the flange bottom and lets out husky hole.
Aforesaid submersible motor, wherein, described capsule is fluorubber capsule or silicon rubber capsule, fluosilicic rubber bag tank, modification nitrile rubber capsule.
Aforesaid submersible motor, wherein, described mechanical seal chamber, outer garden be inner fovea part, have liquid-through hole around this cavity.
Aforesaid submersible motor, wherein, motor internal is full of motor special oil; Stator former is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
Aforesaid submersible motor, wherein, described thrust shaft block bottom, install a collapsible bag cavity, collapsible bag cavity and motor base coupling are installed, and constitute the collapsible bag chamber jointly, device one turnover collapsible bag in it, and leave the permission space that allows collapsible bag expand, to overturn and breathe.
The utility model compared with prior art has significant advantage and beneficial effect.
By above technical scheme as can be known, the utility model has following advantage at least under the structural arrangements of excellence:
The utility model is provided with distinctive seal form, and motor top is provided with flexible mechanical seal cavity, and the mechanical seal of Double End bellows-type is housed in the cavity, and is full of lubricating oil.When motor was at high temperature worked, lubricating oil expanded, but was subjected to the constraint of cavity capsule, made its inside cavity pressure be higher than external pressure, and mechanical seal is worked under positive pressure, avoided this kind mechanical seal to suffer certain buffer brake and lost efficacy; In motor bottom one collapsible bag is set, its bowl-shape structure makes it have big respiratory capacity, and the heat expansion and the shrinkage of dynamo oil in the scalable motor guarantee the motor internal and external pressure balance, avoid mechanical seal to bear buffer brake.Make submersible motor more reliable, make submersible motor can effectively avoid scale problems in the sealing of hot water conditions work mechanism.
The utility model is provided with the flange cavity in elastic mechanical seal chamber outside, protection mechanical seal chamber capsule, and make its even expansion.Be provided with at the flange cavity bottom and let out husky hole, prevent between mechanical seal chamber and flange cavity, to pile up silt, influence annular seal space capsule eupnea;
Bearing shell and sand control cap are set upright in the utility model setting, to guarantee the operate as normal of mechanical seal;
The utility model adopts sliding bearing and is full of motor special oil in motor, it is the lapping electromagnetic wire of H level (180 ℃) that stator winding adopts temperature resistant grade, to satisfy insulation of motor heatproof and lubricating requirement, because dynamo oil is not easy to produce vaporization, under hot water conditions, works and the vaporization problem occurs thereby solved motor.
Excellent structure of the present utility model, in addition motor and in full motor special oil, make motor can water temperature up to 120 ℃ condition under operate as normal,, avoid the insoluble always problem of industry such as high-temperature evaporation.The utility model technology is ingenious, and manufacture method is simple, is easy to be accepted by market, has realized aforesaid every goal of the invention fully.
Embodiment of the present utility model is provided in detail by following most preferred embodiment.
Description of drawings
Fig. 1 is a unitary construction schematic diagram of the present utility model;
Fig. 2 is the local enlarged diagram of the utility model I;
Fig. 3 is the local enlarged diagram of the utility model II.
Embodiment
Below in conjunction with preferred embodiment, embodiment, feature and effect thereof that foundation the utility model is provided, describe in detail as after; For simple and purpose clearly, hereinafter appropriate omission the description of known technology, in order to avoid those unnecessary details influences are to the description of the technical program.
Ask for an interview Fig. 1-2, a kind of submersible motor, mainly be by flange 7, double mechanical seal 40, top guide bearing assembling 4, stator 1, rotor 2, lower guide bearing assembling 5, thrust shaft block 50, collapsible bag 52, capsule cavity 51, base 53 parts such as grade are formed, it comprises from top to bottom flange connecting 7 successively, top guide bearing assembling 4, stator 1, lower guide bearing assembling 5, thrust shaft block 50 and base 53, and rotor 2 is contained in the stator 1, its rotating shaft 21 is by the top guide bearing assembling, lower guide bearing assembling and thrust bearing fit into conduct to and axial location, thrust bearing is loaded on the thrust shaft block 50, wherein, in top guide bearing assembling 4, upper leading axle bearing 41 tops are provided with a mechanical seal cavity 410, the outer garden of this cavity is inner fovea part 414, have liquid-through hole 413 around this cavity 410, capsule 42 is housed in its outside and fixes with clip, top cover labyrinth 44 is housed at an upper portion thereof, so just constitutes an elastic packing chamber; Double mechanical seal 40 is housed in mechanical seal chamber 410, its flexible member is selected bellows for use, its two stationary rings are contained in respectively on mechanical seal cavity bottom 410 and the top cover labyrinth 44, its two rotating rings and flexible member are contained on the motor shaft 21 and (indicate among the figure), make the elastic packing chamber become a complete airtight cavity like this; In the elastic packing chamber, fill with lubricating oil by oil filler point on the top cover labyrinth 441 and steam vent 442, and available screw and lead pad carry out shutoff to these two holes; Bearing shell 440 also is housed in top cover labyrinth, strengthens the centralizing function to motor shaft, a seam 446 is arranged on top cover labyrinth top, it cooperates installation with sand prevention cap 46 on being contained in motor shaft, and the formation sand prevention is constructed; In outside, elastic packing chamber is motor flange 7, and flange internal diameter and aforesaid capsule leave certain clearance, has two holes 70 at the flange middle part, faces the oil filler point and the steam vent of top cover labyrinth, is beneficial to oiling, exhaust, has in the flange bottom and lets out husky hole 72;
At motor internal, adopt plain bearing unit (comprising top guide bearing, lower guide bearing, thrust bearing) and be full of motor special oil, it is the resistant oilproof electromagnetic wire of H level (180 ℃) that stator winding adopts temperature resistant grade.
In thrust shaft block 50 bottoms, adorn a collapsible bag cavity (51), collapsible bag cavity and motor base (53) coupling is installed, common formation collapsible bag chamber, device one peviform collapsible bag (52) in it, the exterior rim mouth of collapsible bag is provided with the edge of projection, and edge is contained in the groove 503 of capsule cavity lower flange face and base upper flange surface whereby, and by the screws clamp on the flange.The collapsible bag chamber leaves the permission space that allows collapsible bag (52) expand, to overturn and breathe.
Aforesaid capsule (42) should use the oil resistant exotic material, preferably select for use modulus of elasticity when elongation 100% greater than the fluorubber of 1.5Mpa or silicon rubber, anti-fluorubber, modification nitrile rubber material.
The present invention is provided with distinctive elastic packing chamber.Mechanical seal is worked in lubricating oil, the infringement of having avoided hot water that mechanical seal is caused, and adopt double mechanical seal to make motor have dual movable sealing protection.When motor was worked in hot water, lubricating oil in the chamber expanded, but was subjected to the constraint of capsule, made its internal pressure be higher than external pressure, and mechanical seal is worked under positive pressure, avoided this kind mechanical seal to suffer certain buffer brake and lost efficacy.The outer garden of mechanical seal cavity has concave shape in addition, increased capsule because the respiratory capacity that lubricating oil expands with heat and contract with cold, compensation mechanical seal trace is revealed the volumetric loss that is caused, and the bearing shell in top cover labyrinth has been strengthened the centralizing function to motor shaft, increases the reliability of mechanical seal work.
Cooperate with the sand prevention cap that rotates with the axis at top cover labyrinth top seam, can prevent effectively that sand in the hot water is to the damage of mechanical seal.Flange outside the elastic packing chamber can play the effect of protection annular seal space capsule, and makes its even expansion.The Sha Kongke that lets out in the flange bottom prevents to pile up silt outside the elastic packing chamber, influences the eupnea of capsule.
Be full of dynamo oil at motor internal and can improve the lubricated of sliding bearing, the more important thing is that dynamo oil is not easy to produce vaporization, occur the dried problem of grinding of bearing that produces because of vaporization in the time of can avoiding in hot water, working.It is H level (180 ℃) that stator winding adopts temperature resistant grade, and the electromagnetic wire of oil resistant can satisfy motor and is higher than the requirement of working under 120 ℃ of conditions in temperature.
In motor bottom the peviform capsule is housed, can adjusts because of variations in temperature causes the dynamo oil change in volume along with motor internal.Its important feature is to realize convex surface upset up or down, has bigger respiratory capacity, can avoid applying buffer brake by motor cavity to mechanical seal.
After the preferred embodiment that describes in detail, being familiar with this technology personage can clearly understand, can carry out various variations and modification not breaking away under following claim and the spirit, and the utility model also is not subject to the execution mode of illustrated embodiment in the specification.
Claims (10)
1. submersible motor, comprise from top to bottom flange connecting (7) successively, top guide bearing assembling (4), stator (1), lower guide bearing assembling (5), thrust shaft block (50) and base (53), rotor (2) is contained in the stator (1), its rotating shaft is by the top guide bearing assembling, lower guide bearing assembling and thrust bearing carry out radial and axial location, thrust bearing is loaded on the thrust shaft block (50), it is characterized in that, in top guide bearing assembling (4), upper leading axle bearing (41) top is provided with a mechanical seal chamber (410), install a capsule (42) in its outside, on this top, mechanical seal chamber top cover labyrinth (44) is housed, constitutes the elastic packing chamber, and be full of lubricating oil; Double mechanical seal (40) is housed in the described mechanical seal chamber; At elastic packing chamber external device (ED) motor flange (7), flange internal diameter and aforesaid capsule leave certain clearance.
2. submersible motor as claimed in claim 1 is characterized in that: the flexible member of aforementioned double mechanical seal is set to bellows.
3. submersible motor as claimed in claim 1 or 2 is characterized in that: described top cover labyrinth internal diameter device bearing shell (45), and oil filler point (441) and steam vent (442) are set, a sand control cap (46) is packed on the motor shaft (21), combines with top cover labyrinth.
4. submersible motor as claimed in claim 3 is characterized in that: describedly have two holes (70) at flange (7) middle part, face the oil filler point and the steam vent of top cover labyrinth, have in the flange bottom and let out husky hole (72).
5. submersible motor as claimed in claim 4 is characterized in that: aforesaid capsule (42) is fluorubber capsule or silicon rubber capsule, fluosilicic rubber bag tank, modification nitrile rubber capsule.
6. submersible motor as claimed in claim 5 is characterized in that: described mechanical seal chamber (410), outer garden be inner fovea part (414), this cavity (410) has liquid-through hole (413) all around.
7. as claim 1 or 6 described submersible motors, it is characterized in that: motor internal is full of motor special oil; Stator former (1) is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
8. submersible motor as claimed in claim 4 is characterized in that: motor internal is full of motor special oil; Stator former (1) is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
9. as claim 1 or 6 described submersible motors, it is characterized in that: described bearing pedestal (50) bottom of ending, install a collapsible bag cavity (51), collapsible bag cavity and motor base (53) coupling is installed, common formation collapsible bag chamber, device one turnover collapsible bag (52) in it, and leave the permission space that allows collapsible bag (52) expand, to overturn and breathe.
10. submersible motor as claimed in claim 7, it is characterized in that: described thrust shaft block (50) bottom, install a collapsible bag cavity (51), collapsible bag cavity and motor base (53) coupling is installed, common formation collapsible bag chamber, device one turnover collapsible bag (52) in it, and leave the permission space that allows collapsible bag (52) expand, to overturn and breathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125952 CN2667783Y (en) | 2003-12-22 | 2003-12-22 | Submersible electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125952 CN2667783Y (en) | 2003-12-22 | 2003-12-22 | Submersible electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667783Y true CN2667783Y (en) | 2004-12-29 |
Family
ID=34349339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320125952 Expired - Fee Related CN2667783Y (en) | 2003-12-22 | 2003-12-22 | Submersible electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667783Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251762A (en) * | 2011-06-30 | 2011-11-23 | 中国石油天然气集团公司 | Sand prevention protector for oil submersible motor |
| CN105871103A (en) * | 2016-05-23 | 2016-08-17 | 新界泵业集团股份有限公司 | Submersible motor provided with sedimentation type sand-proof structure |
| CN110535277A (en) * | 2019-08-19 | 2019-12-03 | 浙江大学 | A kind of compensation oil charging motor of deep sea pressure based on leather bag structure |
-
2003
- 2003-12-22 CN CN 200320125952 patent/CN2667783Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251762A (en) * | 2011-06-30 | 2011-11-23 | 中国石油天然气集团公司 | Sand prevention protector for oil submersible motor |
| CN105871103A (en) * | 2016-05-23 | 2016-08-17 | 新界泵业集团股份有限公司 | Submersible motor provided with sedimentation type sand-proof structure |
| CN105871103B (en) * | 2016-05-23 | 2018-06-12 | 新界泵业集团股份有限公司 | Submersible motor equipped with decanter type sand-prevention structure |
| CN110535277A (en) * | 2019-08-19 | 2019-12-03 | 浙江大学 | A kind of compensation oil charging motor of deep sea pressure based on leather bag structure |
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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 |