CN1165105C - Oil-immersed water-proofing wire immersible motor for immersible pump and its making method - Google Patents
Oil-immersed water-proofing wire immersible motor for immersible pump and its making method Download PDFInfo
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- CN1165105C CN1165105C CNB021229430A CN02122943A CN1165105C CN 1165105 C CN1165105 C CN 1165105C CN B021229430 A CNB021229430 A CN B021229430A CN 02122943 A CN02122943 A CN 02122943A CN 1165105 C CN1165105 C CN 1165105C
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Abstract
The present invention discloses an oil-immersed waterproofing-wire immersible motor for an immersible pump and making method thereof. The oil-immersed waterproofing-wire immersible motor is characterized in that the stator winding of the immersible motor is a waterproofing wire coil winding, a cooling meduim in a casing cavity containing the stator and the rotor of the immersible motor is insulating oil, a sealing system is composed of a sealing chamber, a mechanical seal and a rubber oil seal, and water is filled in the sealing chamber. The oil-immersed waterproofing-wire immersible motor has the advantages of temperature rise reduction, power enhancement, service life extension, service life extension of bearings, effective pollution prevention to water sources and protection of water source environment, and can be used in sewage. The submersible pump using the immersible motor is mainly used for industral and agricultural irrigation and drainage and daily extraction of drinking water for people and livestock, and is especially suitable for the fine irrigation and the spray-irrigation planting of high-efficiency and energy-saving greenhouses and rain-collection and irrigation-saving water cellar in countryside.
Description
(1) technical field
The present invention relates to a kind of water delivery instrument, relate in particular to a kind of immersible pump that is used for industrial or agricultural irrigation and drainage and daily rural households drinking water.
(2) background technology
That now, generally uses has three kinds of immersible pumps, the i.e. small-sized immersible pump of oil immersed type, water-cooled immersible pump and a dry diving pump.Though they all have certain advantage, but exist many shortcoming and defect in actual applications, mainly show: the critical piece coil windings of the small-sized immersible pump of oil immersed type is to adopt enamelled wire, by mechanical seal, filler is that the closed chamber of insulating oil is formed sealing system, in the stator of submersible motor inside, rotor chamber and all adopt insulating oil as the cooling medium in the closed chamber.Because submersible motor is worked in water for a long time, mechanical seal is as long as slightly damage or defective, and the insulating oil in the closed chamber will leak, and causes pollution of waterhead; In addition, water inlet in the stator of submersible motor, the rotor chamber, even have several dripping that coil is burnt out on the coil.Cause submersible motor short and pollution of waterhead in useful life.The critical piece coil windings of water-cooled submersible motor is to adopt water-proof wire, adopts water as the cooling medium in the stator of submersible motor inside, rotor chamber.It is not provided with mechanical seal and closed chamber, but adopts two rubber oil seas as sealing system.It can not use in sewage.Because adopt water as the cooling medium in the stator of submersible motor inside, the rotor chamber, water is conductor, coil is under water, causes the dielectric strength of coil to reduce; The powerful rush of current that produces when the submersible motor frequent starting will cause coil to puncture, and facts have proved that most submersible motor burns out like this; In addition, the rotation system of most of small-sized water-cooled immersible pump adopts bearing, though be provided with rubber seal at the bearing pedestal place,, in use water often enters bearing pedestal, causes bearing lubrication bad, causes damage of bearings.The coil windings of dry-type submersible motor adopts enamelled wire, be provided with mechanical seal and closed chamber, dose insulating oil in the closed chamber and form sealing system, in the stator of submersible motor inside, rotor chamber with air as the cooling medium, identical with the shortcoming of the small-sized immersible pump of oil immersed type is, insulating oil in the closed chamber leaks easily, causes pollution of waterhead; In addition, air is as the cooling medium of stator, rotor, and it is bad to dispel the heat, and coil burns out easily.
(3) summary of the invention
The object of the present invention is to provide a kind of long service life, can not cause the oil immersion type water proof line submersible electric motor that is used for immersible pump of pollution of waterhead.
The technical scheme that realization the present invention is used for the oil immersion type water proof line submersible electric motor of immersible pump is: the stator coil of submersible electric motor is the water-proof wire coil windings, and the cooling medium of the outer shell cavity that the stator of submersible electric motor and rotor are positioned at are insulating oil; Form sealing system by closed chamber, mechanical seal and rubber oil sea, water is as the filler of closed chamber.
The present invention compared with prior art has following beneficial effect:
1, reduces electric machine temperature rise, improve power of motor.Work as energized, during the submersible motor running, the heat that the rotor of submersible motor and stator coil winding produce will make the temperature of submersible motor raise the electric machine temperature rise that Here it is says usually; The experiment proved that, the stator coil of the submersible electric motor of using with water-proof wire coiling immersible pump, and in the stator of submersible electric motor, rotor chamber, adopt insulating oil as the cooling medium, submersible motor is reduced temperature rise play good action; Electric machine temperature rise only is 25K, and if adopt enamelled wire to make stator coil, electric machine temperature rise will be increased to more than the 60K.The reduction of submersible motor temperature rise makes motor power (output) improve (the temperature rise explanation perhaps of filling to motor is seen " eelctrical engineering handbook ", petroleum industry publishing house, publication in February nineteen eighty-two, the 4th page) than its rated power.The experiment proved that: under the situation that does not change stator and rotor, the oil immersion type water proof line motor of 750W matches with the impeller and the pump case of the submersible pump of former 900W, can run well.
2, improve motor useful life.The structure of water-proof wire is that the skin at enamelled wire adds two layers of plastic or nylon again, and its good insulating is in enamelled wire; Add and adopt the cooling medium of insulating oil as stator, rotor chamber, insulation property are better than small-sized immersible pump of oil immersed type and water-cooled immersible pump; And depend on the life-span of insulating material the useful life of motor, (referring to " newly organized motor winding is repaired ", Shanghai science tech publishing house, March nineteen ninety-five front page, the 393rd page～394 pages).Even have water to enter stator, rotor chamber, also can not cause damage to coil.
3, prolong bearing useful life.Because of using insulating oil to fill stator, rotor chamber, insulating oil plays lubrication to bearing.
4, effectively prevent pollution of waterhead, the protection water source environment.Form sealing system by closed chamber, mechanical seal and rubber seal, water is as the filler of closed chamber, when mechanical seal is broken down, insulating oil in submersible motor stator, the rotor chamber at first leaks into closed chamber and can not flow directly into the water source, simultaneously in making regular check on, can in time find to have in the annular seal space oil, in time change mechanical seal.Guarantee that water source environment is not contaminated.
5, enlarge the scope of application of water-proof wire water-cooled immersible pump, adopted the immersible pump of water-proof wire in sewage, to use.
Immersible pump is mainly used in the extraction of industrial or agricultural irrigation and drainage and daily people and animals' drinking water, is specially adapted to slight irrigation, sprinkling irrigation plantation that energy-efficient Wen Peng in rural area and collection rain joint are poured water and stored.
(4) description of drawings
Fig. 1 is the structural representation of oil immersion type water proof line immersible pump.
(5) embodiment
As shown in the figure: the immersible pump of oil immersion type water proof line submersible electric motor, the rotor 14 and the stator 11 of submersible electric motor are positioned at shell inner cavity 13, the stator coil of submersible electric motor is a water-proof wire coil windings 12, the cooling medium of the shell inner cavity 13 that the stator 11 and the rotor 14 of submersible electric motor is positioned at are insulating oil, the rear end of motor shaft 2 is equipped with the rear bearing 15 and bearing cap 16 that is stuck in base 20 centre bores, be equipped with on the base 20 and draw spool 18, lead-out wire 17 is drawn by drawing spool 18, and shell 10, base 20 and protecgulum 21 are with shell inner cavity 13 sealings; The middle part of motor shaft 2 is equipped with the fore bearing 22 and mechanical seal 3 that is stuck in protecgulum 21 centre bores, forms sealing system by closed chamber 1 mechanical seal 3 and rubber oil sea 4, and water is as the filler of closed chamber 1.The front end of motor shaft 2 is equipped with submersible pump impeller 5, and the front end of closed chamber 1 is equipped with pump seat 9, and the front end of pump seat 9 is equipped with pump cover 19, and pump cover 19 is provided with water inlet 7, and the front end of pump cover 19 is equipped with filter screen 6, and submersible pump body is provided with delivery port 8.
Claims (1)
1, a kind of oil immersion type water proof line submersible electric motor that is used for immersible pump, it is characterized in that: the stator coil of submersible electric motor is water-proof wire coil windings (12), the stator of submersible pump motor (11) is an insulating oil with the cooling medium of the outer shell cavity (13) that rotor (14) is positioned at, form sealing system by closed chamber (1), mechanical seal (3) and rubber oil sea (4), water is as the filler of closed chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021229430A CN1165105C (en) | 2002-06-10 | 2002-06-10 | Oil-immersed water-proofing wire immersible motor for immersible pump and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021229430A CN1165105C (en) | 2002-06-10 | 2002-06-10 | Oil-immersed water-proofing wire immersible motor for immersible pump and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1395356A CN1395356A (en) | 2003-02-05 |
| CN1165105C true CN1165105C (en) | 2004-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021229430A Expired - Fee Related CN1165105C (en) | 2002-06-10 | 2002-06-10 | Oil-immersed water-proofing wire immersible motor for immersible pump and its making method |
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| Country | Link |
|---|---|
| CN (1) | CN1165105C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155747A (en) * | 2016-12-06 | 2018-06-12 | 梁嘉麟 | Can deep diving it is non-maintaining and allow fluid jacking come waterproof sealing underwater utensil adapted dragging motor and its application method |
| CN113746248A (en) * | 2016-12-06 | 2021-12-03 | 中国计量大学 | Submersible dragging motor capable of realizing infinite deep diving and extremely long-term diving |
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2002
- 2002-06-10 CN CNB021229430A patent/CN1165105C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1395356A (en) | 2003-02-05 |
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