CN100349361C - Submersible motor for hot water well - Google Patents
Submersible motor for hot water well Download PDFInfo
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- CN100349361C CN100349361C CNB2003101178304A CN200310117830A CN100349361C CN 100349361 C CN100349361 C CN 100349361C CN B2003101178304 A CNB2003101178304 A CN B2003101178304A CN 200310117830 A CN200310117830 A CN 200310117830A CN 100349361 C CN100349361 C CN 100349361C
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- motor
- collapsible bag
- chamber
- mechanical seal
- cavity
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- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 28
- 239000002775 capsule Substances 0.000 claims abstract description 27
- 239000004576 sand Substances 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 20
- 238000012856 packing Methods 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 13
- 238000009834 vaporization Methods 0.000 abstract description 6
- 230000008016 vaporization Effects 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000000241 respiratory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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Abstract
The present invention relates to a submersible motor for hot water wells, which is especially suitable for hot water conditions and comprises a flange, an upper guide bearing seat, a stator, a lower guide bearing seat, a thrust bearing seat and a base which are order connected from top to bottom, a rotor is arranged in the stator, a thrust bearing is arranged on the thrust bearing seat, wherein the upper part of the upper guide bearing seat is provided with a mechanical sealing cavity, a capsule is fixed outside the mechanical sealing cavity, and the upper part of the cavity is provided with an upper sealing cover so that an elastic sealing cavity is formed; a double-end surface mechanical sealing cover is arranged in the cavity, and an oil filling hole and an air discharging hole are arranged on the upper sealing cover; a bearing shell is arranged in the upper sealing cover whose upper part is provided with a rabbet matched with a sand preventing cap; the outer part of the elastic sealing cavity is provided with flange of the motor, and a certain gap is formed between the inner diameter of the flange and the capsule. The submersible motor of the present invention can be suitable for normal operation in hot water of 120 DEG C so as to avoid sealing failures and the damage of vaporization and scale formation caused by high temperature.
Description
Technical field
The present invention relates to a kind of submersible motor, the wet diving motor that especially under hot water conditions, uses.
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.After mechanical seal was lost efficacy, underground water enters motor internal also can fouling and damage motor.
Have again, the high-temperature evaporation problem of motor internal water, can make after water is at high temperature vaporized sliding bearing especially the motor upper bearing produce dried grinding and damage, and dried the grinding of bearing produce 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 by this invention is to overcome the above-mentioned defective that aforementioned techniques exists, and a kind of hot well submersible motor that can normally move under high water temperature work condition environment is provided.
The present invention solves its technical problem and takes following technical scheme to realize, according to a kind of hot well submersible motor provided by the invention, 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 fit on guide bearing, lower guide bearing and thrust bearing carry out radial and axial location, thrust bearing is loaded on the thrust shaft block, wherein, in described top guide bearing assembling, upper leading axle bearing top is provided with a mechanical seal chamber, install a capsule in this outside, mechanical seal chamber, on this top, mechanical seal chamber top cover labyrinth is housed, have the liquid-through hole that leads to this capsule chamber around the described mechanical seal chamber, constitute the elastic packing chamber, and be full of lubricating oil; Described mechanical seal is equipped with double mechanical seal in the chamber; At elastic packing chamber external device (ED) motor flange, this flange internal diameter and aforesaid capsule leave certain clearance.
The present invention solves its technical problem and can also take following technical scheme further to realize:
Aforesaid hot well submersible motor, wherein, the flexible member of described double mechanical seal is set to bellows.
Aforementioned hot well 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; Described flange middle part has two holes, faces the oil filler point and the steam vent of described top cover labyrinth, has in this flange bottom and lets out husky hole.
Aforesaid hot well submersible motor, wherein, described capsule is fluorubber or silicon rubber, fluosilicic rubber, modification nitrile rubber material, the modulus of elasticity of this capsule elongation be 100% o'clock greater than 1.5Mpa.
Aforesaid hot well submersible motor, wherein, the cylindrical in described mechanical seal chamber is inner fovea part (414), and described liquid-through hole is arranged on the inner fovea part of this cavity.
Aforesaid hot well submersible motor, wherein, described motor internal is full of motor special oil; Described stator is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
Aforesaid hot well submersible motor, wherein, described motor internal is full of motor special oil; Described stator is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
Aforementioned hot well submersible motor, wherein, described thrust shaft block bottom, install a collapsible bag cavity, this collapsible bag cavity and motor base coupling are installed, constitute the collapsible bag chamber jointly, device one turnover collapsible bag in this collapsible bag chamber, and leave the permission space that allows this collapsible bag expand, to overturn and breathe.
Aforementioned hot well submersible motor, wherein, described thrust shaft block bottom, install a collapsible bag cavity, this collapsible bag cavity and motor base coupling are installed, constitute the collapsible bag chamber jointly, device one turnover collapsible bag in this collapsible bag chamber, and leave the permission space that allows this collapsible bag expand, to overturn and breathe.
Aforementioned hot well submersible motor, wherein, described thrust shaft block bottom, install a collapsible bag cavity, this collapsible bag cavity and motor base coupling are installed, constitute the collapsible bag chamber jointly, device one turnover collapsible bag in this collapsible bag chamber, and leave the permission space that allows collapsible bag expand, to overturn and breathe.
The present invention compared with prior art has significant advantage and beneficial effect.
By above technical scheme as can be known, the present invention has following advantage at least under the structural arrangements of excellence:
The present invention 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, and can effectively avoid scale problems in the sealing of hot water conditions work mechanism.
The present invention 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 setting of the present invention, to guarantee the operate as normal of mechanical seal;
The present invention 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 invention, 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 problems of industry such as high-temperature evaporation.The technology of the present invention is ingenious, and manufacture method is simple, is easy to be accepted by market, has realized aforesaid every goal of the invention fully.
The specific embodiment of the present invention is provided in detail by following most preferred embodiment.
Description of drawings
Fig. 1 is a unitary construction schematic diagram of the present invention;
Fig. 2 is the local enlarged diagram of I of the present invention;
Fig. 3 is the local enlarged diagram of II of the present invention.
Embodiment
Below in conjunction with preferred embodiment, to according to embodiment provided by the invention, feature and effect thereof, 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. 1-3, a kind of hot well submersible motor, mainly form by parts such as 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, bases 53, it comprises from top to bottom flange connecting 7, top guide bearing assembling 4, stator 1, lower guide bearing assembling 5, thrust shaft block 50 and base 53 successively, and rotor 2 is contained in the stator 1, and its rotating shaft 21 is carried out radial and axial location by top guide bearing assembling, lower guide bearing assembling and thrust bearing.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, top cover labyrinth 44 is housed at an upper portion thereof, so just constitute an elastic packing chamber with clip; 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, 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.Full lubricating oil in the aforesaid elastic packing chamber.
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 (513), device one peviform collapsible bag (52) in it, the exterior rim mouth of collapsible bag is provided with the edge (not indicating among the figure) 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, be familiar with this technology personage and can clearly understand, can carry out various variations and modification not breaking away under following claim and the spirit, and the present invention also is not subject to the execution mode of illustrated embodiment in the specification.
Claims (10)
1. hot well 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 fit on guide bearing, lower guide bearing 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 described top guide bearing assembling (4), upper leading axle bearing (41) top is provided with a mechanical seal chamber (410), install a capsule (42) in this outside, mechanical seal chamber, on this top, mechanical seal chamber top cover labyrinth (44) is housed, have the liquid-through hole (413) that leads to this capsule chamber around the described mechanical seal chamber, constitute 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), this flange internal diameter and aforesaid capsule leave certain clearance.
2. hot well submersible motor as claimed in claim 1 is characterized in that: the flexible member of described double mechanical seal is set to bellows.
3. hot well submersible motor as claimed in claim 1 or 2, it 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; Described flange (7) middle part has two holes (70), faces the oil filler point and the steam vent of described top cover labyrinth, has in this flange bottom and lets out husky hole (72).
4. hot well submersible motor as claimed in claim 3 is characterized in that: described capsule (42) is fluorubber or silicon rubber, fluosilicic rubber, modification nitrile rubber material, the modulus of elasticity of this capsule elongation be 100% o'clock greater than 1.5Mpa.
5. as hot well submersible motor as described in the claim 4, it is characterized in that: the cylindrical in described mechanical seal chamber (410) is inner fovea part (414), and described liquid-through hole (413) is arranged on the inner fovea part of this cavity.
6. as claim 1 or 5 described hot well submersible motors, it is characterized in that: described motor internal is full of motor special oil; Described stator (1) is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
7. hot well submersible motor as claimed in claim 3 is characterized in that: described motor internal is full of motor special oil; Described stator (1) is provided with the resistant oilproof electromagnetic wire winding of heatproof index H level.
8. as claim 1 or 5 described hot well submersible motors, it is characterized in that: described thrust shaft block (50) bottom, install a collapsible bag cavity (51), this collapsible bag cavity and motor base (53) coupling are installed, common formation collapsible bag chamber (513), device one turnover collapsible bag (52) in this collapsible bag chamber, and leave the permission space that allows this collapsible bag (52) expand, to overturn and breathe.
9. hot well submersible motor as claimed in claim 3, it is characterized in that: described thrust shaft block (50) bottom, install a collapsible bag cavity (51), this collapsible bag cavity and motor base (53) coupling are installed, common formation collapsible bag chamber (513), device one turnover collapsible bag (52) in this collapsible bag chamber, and leave the permission space that allows this collapsible bag (52) expand, to overturn and breathe.
10. hot well submersible motor as claimed in claim 6, it is characterized in that: described thrust shaft block (50) bottom, install a collapsible bag cavity (51), this collapsible bag cavity and motor base (53) coupling are installed, common formation collapsible bag chamber (513), device one turnover collapsible bag (52) in this collapsible bag chamber, 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 |
|---|---|---|---|
| CNB2003101178304A CN100349361C (en) | 2003-12-22 | 2003-12-22 | Submersible motor for hot water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101178304A CN100349361C (en) | 2003-12-22 | 2003-12-22 | Submersible motor for hot water well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1592042A CN1592042A (en) | 2005-03-09 |
| CN100349361C true CN100349361C (en) | 2007-11-14 |
Family
ID=34599085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101178304A Expired - Lifetime CN100349361C (en) | 2003-12-22 | 2003-12-22 | Submersible motor for hot water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100349361C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571968A (en) * | 2019-10-24 | 2019-12-13 | 天津市地源泵业有限公司 | High-temperature-resistant motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285534Y (en) * | 1997-01-16 | 1998-07-01 | 中原石油勘探局电潜泵技术研究所 | Submersible motor for well |
| CN2472398Y (en) * | 2000-12-29 | 2002-01-16 | 王万明 | High temperature underwater motor for underground well |
-
2003
- 2003-12-22 CN CNB2003101178304A patent/CN100349361C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285534Y (en) * | 1997-01-16 | 1998-07-01 | 中原石油勘探局电潜泵技术研究所 | Submersible motor for well |
| CN2472398Y (en) * | 2000-12-29 | 2002-01-16 | 王万明 | High temperature underwater motor for underground well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1592042A (en) | 2005-03-09 |
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Owner name: TIANJIN BAILIYITONG PUMP CO., LTD. Free format text: FORMER OWNER: FULANKE MOTOR ENGINEERING CO., LTD., TIANJIN, CITY Effective date: 20120615 |
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Free format text: CORRECT: ADDRESS; FROM: 300210 HEXI, TIANJIN TO: 300385 XIQING, TIANJIN |
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Effective date of registration: 20120615 Address after: 300385 Tianjin Saida century Xiqing Economic Development Zone Branch Road 3 No. 10 Patentee after: TIANJIN PREMIER ESP PUMPING SYSTEMS Co.,Ltd. Address before: 300210 Tianjin city Hexi District heiniucheng Road No. 55 Patentee before: Fulanke Motor Engineering Co.,Ltd. Tianjin City |
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Granted publication date: 20071114 |