CN205029451U - Full through -flow submerged motor pump's no rotor yoke circle structure - Google Patents
Full through -flow submerged motor pump's no rotor yoke circle structure Download PDFInfo
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- CN205029451U CN205029451U CN201520807323.1U CN201520807323U CN205029451U CN 205029451 U CN205029451 U CN 205029451U CN 201520807323 U CN201520807323 U CN 201520807323U CN 205029451 U CN205029451 U CN 205029451U
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Abstract
The utility model provides a full through -flow submerged motor pump's no rotor yoke circle structure, includes that impeller and nos yoke enclose rotor core, be provided with the impeller excircle on the impeller, this impeller excircle and no yoke circle rotor core fixed connection, no yoke circle rotor core includes a plurality of crisscross rotor fanning strips of pressing of folding, and is arbitrary the excircle intermediate sum both sides of rotor fanning strip are provided with excircle groove, and wantonly adjacent excircle groove intermediate position corresponds it all is provided with interior circle groove, two arbitrary of folding the pressure each other to realize in the rotor fanning strip fixed connection between the rotor fanning strip. The utility model has the beneficial effects of: structure, assembly process are simple, and it is convenient to make, has practiced thrift the cost. Under the prerequisite of guaranteeing rotor rigidity, thereby it makes full through -flow submerged motor pump complete machine volume dwindle to have reduced rotor outer diameter. The efficiency of the little messenger of water wear depletion motor reaches the range and improves, makes more energy -efficient of full through -flow pump.
Description
One, technical field
The utility model relates to a kind of full through-flow submersible pump, especially a kind of full through-flow submersible pump without rotor yoke coil structures.
Two, background technology
Full through-flow submersible pump is a kind of new pump being applicable to low-lift-head pumping station, and the hydraulic performance of full through-flow submersible pump is good, smooth channel, and unit efficiency is high, compact conformation, and construction investment is few, is the trend of current pumping plant technical development.
Full-tubular submersible axial flow pump, it is rotor inner circle axial-flow pump impeller being placed in three-phase AC asynchronous motor, the electric current obtained from three phase mains produces rotating magnetic field in submersible motor wets stator winding and Water stator core, the mouse cage sliver of rotating magnetic field cutting rotor and in sliver induced current produce electromagnetic torque, the axial-flow pump impeller that this electromagnetic torque drives rotor and rotor to be consolidated rotates, make vane rotary carry out draining, realize the conversion of electromagnetic power to water-horse power.The diameter of rotor is selected larger when designing to such an extent as to impeller can be put into rotor inside, on the rotor yoke circle early stage full through-flow submersible pump structure adopting rotor punching be enclosed within outside water pump vane, process dovetail groove outward at yoke circle to put into wedge key and make itself and rotor core form an entirety, structural manufacturing process is comparatively complicated, owing to there being the existence of rotor yoke circle, rotor diameter increases.The motor that full through-flow submersible pump is joined is wet stator Water, to the full through-flow submersible pump of Water, the impeller of water pump is contained in rotor inner circle, the rotation of rotor in water can produce larger water frictional dissipation, water frictional dissipation is directly proportional to 5 powers of root diameter, in full through-flow submersible pump, this loss is about 12 ~ 13% of motor rated power, this is the key reason causing full-tubular submersible motor lower than conventional dry electric efficiency 10 ~ 12%, is also the key factor that early stage full-tubular submersible axial flow pump can not be promoted.
Three, utility model content
In order to overcome the weak point of existing full through-flow submersible pump, the utility model provide a kind of full through-flow submersible pump without rotor yoke coil structures.
The technical solution of the utility model realizes like this.
A kind of full through-flow submersible pump of this programme without rotor yoke coil structures, comprise impeller and without yoke circle rotor core, described impeller is provided with impeller cylindrical, this impeller cylindrical is fixedly connected with without yoke circle rotor core, describedly comprise some staggered rotor fanning strips laminated without yoke circle rotor core, in the middle of the cylindrical of any described rotor fanning strip and both sides are provided with cylindrical groove groove, the described rotor fanning strip inner circle corresponding with any described adjacent cylindrical groove groove centre position is provided with inner circle groove groove, be fixedly connected with between two the described rotor fanning strips mutually laminated arbitrarily.
By to connect inner circle groove slot welding and cylindrical groove slot welding connects and is fixedly connected with between two the described rotor fanning strips mutually laminated arbitrarily.
Usefulness of the present utility model is: structure, assembly technology are simple, easily manufactured, have saved cost.Under the prerequisite ensureing rotor rigidity, reduce rotor diameter size thus full through-flow submersible pump machine volume is reduced.The little efficiency of motor that makes of water abrasion depletion reaches amplitude raising, makes full-tubular pump more energy-efficient.
Four, accompanying drawing explanation
Fig. 1 is institutional framework schematic diagram of the present utility model.
Fig. 2 is the structural representation without yoke circle rotor core 2 in the utility model.
Fig. 3 is the structural representation of the utility model rotor fanning strip 5.
Fig. 4 is that early stage full through-flow submersible pump has rotor yoke coil structures schematic diagram.
Five, embodiment
Below in conjunction with accompanying drawing, brief description is made to embodiment of the present utility model.
A kind of full through-flow submersible pump as shown in the figure without rotor yoke coil structures, comprise impeller 1 and without yoke circle rotor core 2, described impeller 1 is provided with impeller cylindrical 3, this impeller cylindrical 3 is fixedly connected with without yoke circle rotor core 2, describedly comprise some staggered rotor fanning strips 5 laminated without yoke circle rotor core 2, in the middle of the cylindrical of any described rotor fanning strip 5 and both sides are provided with cylindrical groove groove 7, described rotor fanning strip 5 inner circle corresponding with any described adjacent cylindrical groove groove 7 centre position is provided with inner circle groove groove 6, be fixedly connected with between two the described rotor fanning strips 5 mutually laminated arbitrarily.
By to weld inner circle groove groove 6 and cylindrical groove groove 7 is welded and fixed connection between two the described rotor fanning strips 5 mutually laminated arbitrarily.
Specific works mode:
As shown in Fig. 1,2,4, the cast steel rotor yoke circle 4 had in early days in rotor yoke coil structures full through-flow submersible pump is eliminated without yoke circle rotor core 2, rotor diameter reduces 10%, thus make water frictional dissipation less by about 60%, more efficient when full through-flow submersible pump is run, there is great economic benefit and social benefit.
The rotation of rotor in water can produce larger water frictional dissipation, is about 12 ~ 13% of motor rated power, the computing formula of its water frictional dissipation for this loss in full through-flow submersible pump:
In formula: D---the rotor outer circle diameter mm of full-tubular submersible axial flow pump
The rotor axial length mm of l---full-tubular submersible axial flow pump
The rotating speed r/min of n---full-tubular submersible axial flow pump
K---coefficient, relevant with the size of the viscosity of WATER AS FLOW MEDIUM, fineness, air gap and concentricity
Can see that from above formula water outlet frictional dissipation is directly proportional to 5 powers of root diameter, the reduction of the rotor diameter in the utility model makes water abrasion consumption greatly reduce, thus the efficiency of full through-flow submersible pump is significantly improved.
By reference to the accompanying drawings 2, formed by staggered the laminating of some rotor fanning strips 5 without yoke circle rotor core 2, by welding inner circle groove groove 6 and cylindrical groove groove 7, some rotor fanning strips 5 are welded formation entirety after laminating, rigidity improves greatly.
By reference to the accompanying drawings 3, in the middle of on the cylindrical of every sheet rotor fanning strip 5 and both sides have cylindrical groove groove 7, and inner circle has two place's inner circle groove grooves 6, instead of the baroque dovetail groove 8 on the cast steel rotor yoke circle 4 in early structure, manufacture more convenient, cost is lower.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (2)
1. a full through-flow submersible pump without rotor yoke coil structures, comprise impeller (1) and without yoke circle rotor core (2), described impeller (1) is provided with impeller cylindrical (3), this impeller cylindrical (3) is fixedly connected with without yoke circle rotor core (2), it is characterized in that: describedly comprise some staggered rotor fanning strips (5) laminated without yoke circle rotor core (2), in the middle of the cylindrical of any described rotor fanning strip (5) and both sides are provided with cylindrical groove groove (7), described rotor fanning strip (5) inner circle corresponding with any described adjacent cylindrical groove groove (7) centre position is provided with inner circle groove groove (6), be fixedly connected with between two the described rotor fanning strips (5) mutually laminated arbitrarily.
2. full through-flow submersible pump according to claim 1 without rotor yoke coil structures, it is characterized in that: by being welded and fixed connection to inner circle groove groove (6) welding and cylindrical groove groove (7) between two the described rotor fanning strips (5) mutually laminated arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807323.1U CN205029451U (en) | 2015-10-19 | 2015-10-19 | Full through -flow submerged motor pump's no rotor yoke circle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807323.1U CN205029451U (en) | 2015-10-19 | 2015-10-19 | Full through -flow submerged motor pump's no rotor yoke circle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205029451U true CN205029451U (en) | 2016-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520807323.1U Active CN205029451U (en) | 2015-10-19 | 2015-10-19 | Full through -flow submerged motor pump's no rotor yoke circle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205029451U (en) |
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2015
- 2015-10-19 CN CN201520807323.1U patent/CN205029451U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |