CN102913487A - Motor cooling structure of immersed pump - Google Patents
Motor cooling structure of immersed pump Download PDFInfo
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- CN102913487A CN102913487A CN2012103243932A CN201210324393A CN102913487A CN 102913487 A CN102913487 A CN 102913487A CN 2012103243932 A CN2012103243932 A CN 2012103243932A CN 201210324393 A CN201210324393 A CN 201210324393A CN 102913487 A CN102913487 A CN 102913487A
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Abstract
The invention discloses a motor cooling structure of an immersed pump. The motor cooling structure comprises a sealing member, a cooling coil, a circulation impeller, a circulation guide vane and an adjusting device, wherein the adjusting device is communicated with a motor shell; the cooling coil is installed outside the motor shell and immersed inside an sucking channel of the pump body; the upper end of the cooling coil is communicated with the sealing member and the lower end is communicated with the adjusting device; the sealing member is a hollow shell with a reinforced circulation chamber; and a circulation impeller and a circulation guide vane are installed inside the reinforced circulation chamber. The motor cooling structure has the benefits that the motor temperature rising problem is solved; the cooling liquid has a lubrication function to the motor; the motor has strong circulation stability and can work for a long term without changing the cooling liquid; so that the cooling condition of the motor is significantly improved and the period for changing the cooling liquid is prolonged; and the axial load of a main pump bearing is reduced, so that the reliability and the stability of the motor operation are effectively improved. As a result, the operation environment of the motor is improved, the service lives of components and maintenance period of equipment are prolonged; and the expense of a whole project is saved.
Description
Technical field
Patent of the present invention relates to the cooling structure of electric motor for pump, specially refers to a kind of motor cooling of submersible pump.
Background technique
Being installed in the submersible pump in the bottom pump hole, underground water seal cave depot cavern, is the key equipment that guarantees underground cavern long period, high efficiency, safe and reliable operation, and in the prior art, how reducing the stator of motor and the temperature of rotor is the technical barrier of large-scale submersible pump.When moving, equipment tends to produce very large heat, the not good meeting of cooling effect so that temperature sharply raise, too high temperature not only can cause the rotor expanded by heating, gap between rotor and the stator reduces, and causes the violent friction of rotor and stator, also can cause the motor component metallicity to descend, strength decreased, thereby easily damage, cause the deterioration of equipment working condition, motor is aging rapidly;
In addition, the temperature rising can cause that the viscosity of lubricant oil descends, and destroys oil film, causes engine lubrication to worsen, thereby damages motor, and parts damages are shortened the non-maintaining phase, so that cost raises.The heat that therefore, must produce it in engine operation in time dissipates.
Moreover the parameter requests such as discharge capacity, lift, working time are high, and bearing belongs to the higher parts of spoilage, because the bearing in the equipment often will bear very large axial force, also are crucial so how to reduce the axial force that bearing bears.
Moreover the heat that the cooling liquid of existing submersible pump inside absorbs only relies on motor casing to radiate, and cooling effect is not good enough.
Summary of the invention
The object of the present invention is to provide a kind of motor cooling of submersible pump, it is by arranging the liquid circulation cooling coil between sealed member and controlling device, and apply pump circulation by circulation impeller and the circulation stator that is arranged in the sealed member, cooling liquid is circulated by the circulating cooling coil pipe, be recycled the outer current of cooling coil and take away cold, and then improved cooling effect.
Moreover the axial force that another object of the present invention is to the circulation impeller generation can be offset the axial force of part pump impeller itself.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of motor cooling of submersible pump comprises link press span, the pump housing and motor component, and the bottom of link press span is connected by fastening piece with the top of the pump housing; Be fixed with a motor component supporting base in the bottom of the pump housing, motor component is installed on the motor component supporting base and is positioned at the inside of the pump housing; Offer water intake at the motor component supporting base, the space between motor component and the pump housing inwall consists of suction passage, is provided with suction port in the bottom of link press span, and suction passage is connected with suction port and water intake; Motor component comprises a cooling liquid controlling device, be fixed on the motor cabinet on the cooling liquid controlling device, be fixed on the motor casing on the motor cabinet, be fixed on the bearing bracket stand on the motor casing, be fixed on the sealed member on the bearing bracket stand, be installed in the thrust bearing part in the space between bearing bracket stand and the sealed member, be supported on motor cabinet, bearing bracket stand, pump shaft on thrust bearing part and the sealed member, middle part at pump shaft is fixed with rotor, the periphery of rotor is provided with stator, stator is fixed on the motor casing, be provided with the lower through-hole that motor casing is communicated with the cooling liquid controlling device at motor cabinet, be provided with the slit between rotor and the stator, be provided with the upper through hole that motor casing is communicated with the space on the bearing bracket stand, the cooling liquid that enters in the cooling liquid controlling device is passed through lower through-hole, slit and upper through hole be full of in the motor casing and the space in; Delimit out a pump circulation chamber in the space and above being positioned at thrust bearing part, the forced seal chamber is positioned at the below of sealed member; Between sealed member and cooling liquid controlling device, be connected a liquid circulation cooling-part, the liquid circulation cooling-part is arranged in the motor casing outside, suction passage, the upper end of this liquid circulation cooling-part is communicated with the pump circulation chamber, the lower end of liquid circulation cooling-part and cooling liquid controlling device internal communication; In the pump circulation chamber, also be provided with and be fixed on the pump shaft and be positioned at circulation impeller and circulation stator above the thrust bearing part, the circulation stator is positioned at the bottom of circulation impeller, when pump shaft drove circulation impeller and the rotation of circulation stator, circulation impeller and circulation stator forced cooling liquid to form circulation between liquid circulation cooling-part and motor component inside.
In a preferred embodiment of the invention, circulation impeller is oppositely to install, can also balance part axial force in the suction cooling liquid.
In a preferred embodiment of the invention, in the pump circulation chamber, also be provided with on the fixing pump shaft and be positioned at guide plate above the circulation impeller.
In a preferred embodiment of the invention, the liquid circulation cooling-part is that the liquid circulation cooling-part is the liquid circulation cooling coil around the motor casing rotation.
In a preferred embodiment of the invention, the liquid circulation cooling coil is the parallel setting of two-way.
Beneficial effect of the present invention is:
Thereby the current that utilize the pump housing to suck dispel the heat to the liquid circulation cooling coil and have solved the electric machine temperature rise problem, cooling liquid also can play lubrication to motor, cyclical stability is strong, can adhere to that long-term operation needn't change cooling liquid, significantly improve the cool condition of motor and prolonged the cycle of changing cooling liquid; The circulation impeller of oppositely installing has been offset the axial force that the part pump impeller produces, reduced the pump main bearing axial load; Effective Raise motor reliability of operation and stability are improved motor running environment, prolong parts working life and plant maintenance cycle, for whole project investment is reduced expenses.
Description of drawings
Fig. 1 is that the motor cooling of a kind of submersible pump of the present invention is in actual applications along the sectional view of axial direction.
Fig. 2 is the partial enlarged drawing of the motor cooling structure of a kind of submersible pump of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
As depicted in figs. 1 and 2, the present invention includes link press span 160, the pump housing 600 and motor component, the bottom of link press span 160 is connected by fastening piece with the top of the pump housing 600.
Motor component comprises the cooling liquid controlling device 400 that is arranged on the pump housing 600 inside, submersible electric motor 200, motor cabinet 240, motor casing 260, bearing bracket stand 170, thrust bearing part 700, cooling liquid controlling device 400 adopts bolt to be fixedly mounted on the supporting base 610 of the pump housing 600 bottoms, motor cabinet 240 adopts bolt to be fixedly mounted on the cooling liquid controlling device 400, motor casing 260 adopts bolt to be fixedly mounted on the motor cabinet 240, bearing bracket stand 170 adopts bolt to be fixedly mounted on the motor casing 260, sealed member 100 adopts bolts to be fixedly mounted on bearing bracket stand 170, and thrust bearing part 700 is installed in the space between bearing bracket stand 170 and the sealed member 100.In the pump housing 600, also be provided with the pump shaft 140 that is supported on motor cabinet 240, bearing bracket stand 170, thrust bearing part 600 and the sealed member 100, be fixed with the rotor 210 of submersible electric motor 200 at the middle part of pump shaft 140, the periphery of rotor 210 is provided with stator 220, and stator 220 is fixed on motor casing 260 inwalls.The slit of flowing through for cooling liquid is arranged between rotor 210 and the stator 220.
Offer water intake 611 at supporting base 610, space between the outer wall of whole motor component and the pump housing 600 inwalls consists of suction passage 620, be provided with suction port 161 in the bottom of link press span 160, suction passage 620 is connected with suction port 161 and water intake 611.
Cooling liquid controlling device 400 adopts bolt to be fixedly mounted on the supporting base 610.Cooling liquid controlling device 400 is a container in order to store cooling liquid and coolant pressure is regulated, and flange plate 410 centers of its bottom offer a cooling liquid inlet 411 and blowdown bolt 412, after cooling liquid is injected, and 411 sealings of cooling liquid inlet.
Motor cabinet 240 is made of the flange plate 241 that is integrated into and axle sleeve 242, the center of flange plate 241 and axle sleeve 242 is provided with axis hole 243, pump shaft 140 passes from axis hole 243, is provided with properties of journal bearing lubricated 244 between the hole wall of axis hole 243 and the pump shaft 140 corresponding shaft parts.Be provided with the motor casing 260 inner through holes 245 that are communicated with cooling liquid controlling device 400 at flange plate 241, the cooling liquid of cooling liquid controlling device 400 inside flow into motor casing 260 inside by this through hole 235.
Thrust bearing part 700 is positioned at the inside of sealed member supporting portion 173, it comprises thrust-bearing 710, thrust collar 720, thrust-bearing cover plate 730, thrust-bearing 710 is installed on the flange plate 171 of bearing bracket stand 170 and axle is located on the pump shaft 140, and thrust collar 720 is fixed on the pump shaft 140 and is supported on the thrust-bearing 710; Thrust-bearing cover plate 730 adopts bolts to be fixedly mounted on the sealed member supporting portion 173, and cooperates with thrust-bearing 710 thrust collar 720 is carried out the axial position restriction.Offer the through hole 721 that flows through for the part cooling liquid at thrust collar 720.
Sealed member 100 adopts bolt to be fixedly mounted on the sealed member supporting portion 173, be provided with axis hole 101 in the center of sealed member 100, the pump shaft 140 of submersible pump passes from this axis hole 101, and also is provided with mechanical seal 150 between the fitting surface of pump shaft 140 corresponding shaft parts and through hole 101.Delimit out a pump circulation chamber 190 in sealed member 100 bottoms, in pump circulation chamber 190, be furnished with the circulation impeller 110 and the circulation stator 120 that are fixed on the pump shaft 140, circulation stator 120 is positioned at the bottom of circulation impeller 110, and circulation impeller 110 is oppositely to install.
190 also are provided with guide plate 130 in the pump circulation chamber, and guide plate 130 is screwed on the sealed member 100, is directed to its both sides in order to the cooling liquid that will enter pump circulation chamber 190.
Sealed member 100 walls in 190 both sides, pump circulation chamber are respectively equipped with through hole 140a and 140b.
Cooling coil 300 is arranged in motor casing 260 outsides and is immersed in suction passage 620, is the double flow channel structure, is looped around in the shape of a spiral around the motor casing 260, and is fixed on the motor casing 260 by fixed component 301a, 301b; Two interfaces of its upper end respectively by L shaped ell 310c and 310d and sealed member 100 both sides sealed member 100 walls on through hole 140a be connected with 140b, the lower end is connected with 410b with the through hole 410a of cooling liquid controlling device 400 both sides with 310b by L shaped ell 310a respectively.
The cooling liquid of cooling liquid controlling device 400 inside is flow into motor casing 260 inside and is full of whole motor casing 260 inside by the slit between rotor 210 and the stator 220 by this through hole 235, the cooling liquid of motor casing 260 inside flow into 173 inside, sealed member supporting portion by through hole 175 again and is full of, and cools off with the thrust bearing part 700 to 173 inside, sealed member supporting portion.The cooling liquid of 173 inside, sealed member supporting portion flow in the pump circulation chamber 190 by the through hole 721 on the thrust collar 720.
When pump shaft 140 drove circulation impeller 110 and 120 rotation of circulation stator, circulation impeller 110 and circulation stator 120 forced cooling liquid to form circulation between cooling coil 300 and motor component inside.
During submersible pump work, submersible electric motor 200 drives the pump impeller rotation by pump shaft 140 makes current enter the suction passage 620 of the pump housing 600 by water intake 510, drives simultaneously circulation impeller 110 and 110 rotations of circulation stator.
Cooling liquid flows through from the gap between stator 220 and the rotor 210, takes away submersible electric motor 200 heats, simultaneously also to playing lubrication between stator 220 and the rotor 210; At this moment cooling liquid absorbs the heat of stator 220 and rotor 210, temperature raises gradually, these high temperature coolants are under circulation impeller 110 and 120 effects of circulation stator, be pumped down in the pump circulation chamber 190 of sealed member 100 through bearing bracket stand 170 by motor casing 260, enter cooling coil 300 by through hole 140a and 140b again; Because cooling coil 300 is immersed in the middle of the circulating water of suction passage 520, the heat of cooling liquid can be taken away by current very soon, moreover, because the area of cooling coil 300 is larger, also can accelerate the heat radiation of submersible electric motor 200; Cryogenic liquid enters cooling liquid controlling device 400 again under the effect of circulation impeller 110 and circulation stator 120, enter the next round circulation.
Moreover, because the circulation impeller 110 in the sealed member 100 is oppositely to install, circulation impeller 110 can be offset the axial force that a part of pump impeller produces when equipment operation, thereby reduces the axial load that part thrust-bearing 710 bears, and prolongs the working life of thrust-bearing 710.
Above demonstration and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. the motor cooling of a submersible pump comprises link press span, the pump housing and motor component, and the bottom of described link press span is connected by fastening piece with the top of the pump housing; Be fixed with a motor component supporting base in the bottom of the described pump housing, described motor component is installed on the described motor component supporting base and is positioned at the inside of the described pump housing; Offer water intake at described motor component supporting base, the space between described motor component and the described pump housing inwall consists of suction passage, is provided with suction port in the bottom of link press span, and described suction passage is connected with described suction port and water intake; Described motor component comprises a cooling liquid controlling device, be fixed on the motor cabinet on the described cooling liquid controlling device, be fixed on the motor casing on the described motor cabinet, be fixed on the bearing bracket stand on the described motor casing, be fixed on the sealed member on the described bearing bracket stand, be installed in the thrust bearing part in the space between described bearing bracket stand and the sealed member, be supported on described motor cabinet, bearing bracket stand, pump shaft on thrust bearing part and the sealed member, middle part at described pump shaft is fixed with rotor, the periphery of rotor is provided with stator, stator is fixed on the motor casing, it is characterized in that
Be provided with the lower through-hole that motor casing is communicated with the cooling liquid controlling device at described motor cabinet, be provided with the slit between described rotor and the stator, be provided with the upper through hole that motor casing is communicated with described space on the described bearing bracket stand, enter cooling liquid in the cooling liquid controlling device and be full of in the motor casing by described lower through-hole, described slit and described upper through hole and in the described space; Delimit out a pump circulation chamber in described space and above being positioned at described thrust bearing part, described forced seal chamber is positioned at the below of described sealed member; Between described sealed member and described cooling liquid controlling device, be connected a liquid circulation cooling-part, described liquid circulation cooling-part is arranged in the described motor casing outside, suction passage, the upper end of this liquid circulation cooling-part is communicated with described pump circulation chamber, the lower end of liquid circulation cooling-part and cooling liquid controlling device internal communication; In described pump circulation chamber, also be provided with and be fixed on the described pump shaft and be positioned at circulation impeller and circulation stator above the described thrust bearing part, described circulation stator is positioned at the bottom of circulation impeller, when described pump shaft drove circulation impeller and the rotation of circulation stator, circulation impeller and circulation stator forced cooling liquid to form circulation between liquid circulation cooling-part and motor component inside.
2. the motor cooling of a kind of submersible pump as claimed in claim 1 is characterized in that, described circulation impeller is oppositely to install, can also balance part axial force in the suction cooling liquid.
3. the motor cooling of a kind of submersible pump as claimed in claim 1 is characterized in that, also is provided with the guide plate of fixing on the described pump shaft and being positioned at described circulation impeller top in the described pump circulation chamber.
4. the motor cooling of a kind of submersible pump as claimed in claim 1 is characterized in that, described liquid circulation cooling-part is that the liquid circulation cooling-part is the liquid circulation cooling coil around the motor casing rotation.
5. the motor cooling of a kind of submersible pump as claimed in claim 1 is characterized in that, described liquid circulation cooling coil is the parallel setting of two-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210324393.2A CN102913487B (en) | 2012-09-04 | 2012-09-04 | Motor cooling structure of immersed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210324393.2A CN102913487B (en) | 2012-09-04 | 2012-09-04 | Motor cooling structure of immersed pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913487A true CN102913487A (en) | 2013-02-06 |
| CN102913487B CN102913487B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210324393.2A Active CN102913487B (en) | 2012-09-04 | 2012-09-04 | Motor cooling structure of immersed pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN102913487B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939360A (en) * | 2014-05-05 | 2014-07-23 | 湘潭金阳电机泵业有限公司 | Compression-type circulating water cooling submersible electric pump |
| CN104065210A (en) * | 2014-06-25 | 2014-09-24 | 古春林 | Geothermal submersible motor with upper radiator |
| CN111998005A (en) * | 2020-08-25 | 2020-11-27 | 南京工程学院 | Cooling and flushing structure of water lubrication thrust bearing |
| CN112928866A (en) * | 2021-02-07 | 2021-06-08 | 南京工程学院 | Cooling circulation loop for high-power high-speed submersible pump |
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2012
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939360A (en) * | 2014-05-05 | 2014-07-23 | 湘潭金阳电机泵业有限公司 | Compression-type circulating water cooling submersible electric pump |
| CN104065210A (en) * | 2014-06-25 | 2014-09-24 | 古春林 | Geothermal submersible motor with upper radiator |
| CN104065210B (en) * | 2014-06-25 | 2016-06-01 | 古春林 | The underground heat submersible machine of scatterer is put on a kind of |
| CN111998005A (en) * | 2020-08-25 | 2020-11-27 | 南京工程学院 | Cooling and flushing structure of water lubrication thrust bearing |
| CN111998005B (en) * | 2020-08-25 | 2022-02-18 | 南京工程学院 | Cooling and flushing structure of water lubrication thrust bearing |
| CN112928866A (en) * | 2021-02-07 | 2021-06-08 | 南京工程学院 | Cooling circulation loop for high-power high-speed submersible pump |
| CN112928866B (en) * | 2021-02-07 | 2021-11-05 | 南京工程学院 | Cooling circulation loop for high-power high-speed submersible pump |
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| CN102913487B (en) | 2015-04-01 |
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