CN204559259U - There is a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system - Google Patents
There is a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system Download PDFInfo
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- CN204559259U CN204559259U CN201520268577.0U CN201520268577U CN204559259U CN 204559259 U CN204559259 U CN 204559259U CN 201520268577 U CN201520268577 U CN 201520268577U CN 204559259 U CN204559259 U CN 204559259U
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Abstract
The utility model discloses and have a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system, it relates to machine field.The utility model solves the serious problem of existing large turbo-type generator stator copper heating in winding.Turbine generator stator core is equidistantly arranged vertically, forms stator ventilation ducts between adjacent stator core, and positioning bar is arranged on the outer radius of stator core, and stator winding is arranged in the groove of stator core.Spoon shape metal partion (metp) is arranged in the stator ventilation ducts between turbine generator stator core, and is fixedly clamped by both sides stator core.Spoon shape metal partion (metp) is arranged between adjacent stator winding in a circumferential direction equably.The utility model structure is simple, easy for installation, improves the cooling effect in generator unit stator region, and can suppress the generation of cooling fluid eddy current in stator ventilation ducts.
Description
Technical field
The utility model relates to and has a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system, belongs to machine field.
Background technology
Along with the capacity of large turbo-type generator constantly increases, electric current in stator of steam turbine generator copper winding raises gradually, the electric current increased causes the loss of stator copper winding and temperature rise sharply to increase, especially make under electromagnetic field effect in generator the loss of stator upper copper winding and temperature higher, easily exceed the temperature rise limit of stator winding insulation material, badly influence the safe and reliable operation of turbo generator.The too high temperature of stator copper winding has limited turbo generator to more Large Copacity development, being badly in need of adopting economic air quantity to take away the heat of stator copper winding, providing technical support for studying more large turbo-type generator.
Cooling fluid in existing stator of steam turbine generator zonal ventilation ditch is not utilized rationally and effectively, and make the ventilating and cooling effect of cooling fluid to stator copper winding poor, the heating that result in stator copper winding is comparatively serious.This just needs do not changing on the basis of generator performance, improve the utilance of cooling fluid in stator region ventilation ducts, reducing temperature rise and the balanced stator copper winding temperature in axial direction of stator copper winding, is the first-selected measure improving turbo generator safety and reliability.
Summary of the invention
What the purpose of this utility model was to provide reasonable has a spoonful shape structural formula stator ventilation cooling system, to solve turbo generator because stator copper loss is high and the low and problem that stator copper winding temperature that is that cause is too high of the utilance of cooling fluid in ventilation ducts between stator core, the cooling effect of stator copper winding effectively can be improved.
Of the present utility model have a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system, and it comprises air gap, spoon shape metal partion (metp), slot wedge and layer insulation between stator core, stator ventilation ducts, stator winding, positioning bar, rotor, rotor.Stator winding is made up of stator copper winding and stator winding insulation, and spoon shape metal partion (metp) is made up of two " L " shape diaphragm and water conservancy diversion tail rod.Turbine generator stator core is equidistantly arranged vertically, forms stator ventilation ducts between adjacent stator core, and positioning bar is arranged on the outer radius of stator core, and stator winding is arranged in the groove of stator core.Spoon shape metal partion (metp) is arranged in the stator ventilation ducts between turbine generator stator core, and is fixedly clamped by both sides stator core.Spoon shape metal partion (metp) is arranged between adjacent stator winding in a circumferential direction equably.Two " L " shape diaphragm is leaving the gap of H distance near tooth top place, the span of H is 4 mm to 10 mm.The gap of M distance is left respectively between the stator copper winding insulation of two " L " shape diaphragm and both sides, the distance needs of this gap are determined according to the size of current in the capacity of turbo generator and stator copper winding 3-1, and the span of M is 4 mm to 10 mm.The H distance gap that two " L " shape diaphragm is leaving near tooth top place should be allowed during actual installation as far as possible equal with M distance gap, be convenient to cooling fluid and enter equably in stator ventilation ducts.The material of described spoon shape metal partion (metp) is steel.
As preferably, described two " L " shape diaphragms, adopting bending structure near stator core tooth top place, are convenient to cooling fluid and are entered more glibly in stator ventilation ducts.
As preferably, described two " L " shape diaphragm and the as a whole metal partion (metp) of water conservancy diversion tail rod, bulk metal dividing plate is leaving preposition ventilation hole and rearmounted ventilation hole respectively near the tooth top place of stator core and tooth root place, effectively can improve the convenience of radiating effect and the installation of spoon shape metal partion (metp).
Advantage of the present utility model: spoon shape metal partion (metp) is installed in the ventilation ducts between turbine generator stator core, and is fixedly clamped by both sides stator core.On the basis not changing the original runnability of turbo generator, the speed of cooling fluid around stator winding is increased by the ventilation-sectional area reducing cooling fluid Radial Flow, ensure that stator winding surface has larger coefficient of heat transfer, effectively improve the ability that cooling fluid takes away stator copper winding heat, reduce the temperature of stator copper winding, especially more obvious to the cooling effect of the serious stator upper copper winding that generates heat.Meanwhile, also restrained effectively the generation of stator ventilation ducts inner fluid eddy current.This utility model structure is simple, easy for installation, can significantly improve the cooling effect in stator of steam turbine generator region.
accompanying drawing illustrates:
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is the axial cutaway view of motor described in the utility model.
Fig. 2 is spoon shape stator ventilation cooling structure schematic diagram in the utility model.
In figure: 1-stator core; 2-stator ventilation ducts; 3-stator winding; 4-positioning bar; 5-rotor; Air gap between 6-rotor; 7-spoon shape metal partion (metp); 8-slot wedge; 9-layer insulation.
embodiment:
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by the specific embodiment shown in accompanying drawing, the utility model is described.But should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
As depicted in figs. 1 and 2, this embodiment by the following technical solutions: present embodiment comprises air gap 6, spoon shape metal partion (metp) 7, slot wedge 8 and layer insulation 9 between stator core 1, stator ventilation ducts 2, stator winding 3, positioning bar 4, rotor 5, rotor.Stator winding 3 is made up of stator copper winding 3-1 and stator winding insulation 3-2, and spoon shape metal partion (metp) 7 is made up of two " L " shape diaphragm 7-1 and water conservancy diversion tail rod 7-2.Turbine generator stator core 1 is equidistantly arranged vertically, and form stator ventilation ducts 2 between adjacent stator core 1, positioning bar 4 is arranged on the outer radius of stator core 1, and stator winding 3 is arranged in the groove of stator core 1.Spoon shape metal partion (metp) 7 is arranged in the stator ventilation ducts 2 between turbine generator stator core 1, and is fixedly clamped by both sides stator core 1.Spoon shape metal partion (metp) 7 is arranged between adjacent stator winding 3 in a circumferential direction equably.Two " L " shape diaphragm 7-1 is leaving the gap of H distance near tooth top place, the span of H is 4 mm to 10 mm, and the present embodiment is taken as 6 mm.The gap of M distance is left respectively between the stator copper winding insulation 3-2 of two " L " shape diaphragm 7-1 and both sides, the distance needs of this gap are determined according to the size of current in the capacity of turbo generator and stator copper winding 3-1, the span of M is 4 mm to 10 mm, and the present embodiment is taken as 6 mm.The H distance gap that two " L " shape diaphragm 7-1 is leaving near tooth top place should be allowed during actual installation as far as possible equal with M distance gap, be convenient to cooling fluid and enter equably in stator ventilation ducts 2.The Material selec-tion of described spoon shape metal partion (metp) 7 is the metal material with some strength, and as any one of steel, alloy and aluminium, the present embodiment is taken as steel.
Further, described two " L " shape diaphragm 7-1, adopting bending structure near stator core 1 tooth top place, are convenient to cooling fluid and are entered more glibly in stator ventilation ducts 2.
Further, described two " L " shape diaphragm 7-1 and the as a whole metal partion (metp) of water conservancy diversion tail rod 7-2, bulk metal dividing plate is leaving preposition ventilation hole and rearmounted ventilation hole respectively near the tooth top place of stator core 1 and tooth root place, effectively can improve the convenience of radiating effect and the installation of spoon shape metal partion (metp).
Concrete cooling fluid is flowed by area of space larger between original stator ventilation ducts 2 internal stator winding 3, change in main area of space less between spoon shape metal partion (metp) 7 and stator winding 3 and flow, accelerate the speed of stator winding 3 surrounding cooling fluid, ensure that stator winding 3 surface has larger coefficient of heat transfer, improve the ability that cooling fluid takes away stator copper winding 3-1 heat, significantly reduce the temperature of stator copper winding 3-1, improve the stator copper winding 3-1 present situation that the temperature difference is larger in the axial direction.Meanwhile, further suppress the generation of stator ventilation ducts 2 inner fluid eddy current, for the research and development of more large turbo-type generator and design provide foundation.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. there is a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system, it is characterized in that: it comprises air gap (6), spoon shape metal partion (metp) (7), slot wedge (8) and layer insulation (9) between stator core (1), stator ventilation ducts (2), stator winding (3), positioning bar (4), rotor (5), rotor, stator winding (3) is made up of stator copper winding (3-1) and stator winding insulation (3-2), and spoon shape metal partion (metp) (7) is made up of two " L " shape diaphragm (7-1) and water conservancy diversion tail rod (7-2), turbine generator stator core (1) is equidistantly arranged vertically, stator ventilation ducts (2) is formed between adjacent stator core (1), positioning bar (4) is arranged on the outer radius of stator core (1), stator winding (3) is arranged in the groove of stator core (1), spoon shape metal partion (metp) (7) is arranged in the stator ventilation ducts (2) between turbine generator stator core (1), and be fixedly clamped by both sides stator core (1), spoon shape metal partion (metp) (7) is arranged between adjacent stator winding (3) in a circumferential direction equably, two " L " shape diaphragm (7-1) is leaving the gap of H distance near tooth top place, the span of H is 4 mm to 10 mm, the gap of M distance is left respectively between two " L " shape diaphragm (7-1) and the stator copper winding insulation (3-2) of both sides, the distance needs of this gap are determined according to the size of current in the capacity of turbo generator and stator copper winding (3-1), and the span of M is 4 mm to 10 mm, the H distance gap that two " L " shape diaphragm (7-1) is being left near tooth top place should be allowed during actual installation equal with M distance gap as far as possible, the material of described spoon shape metal partion (metp) (7) is steel.
2. according to claim 1 have a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system, it is characterized in that: described two " L " shapes diaphragm (7-1) are adopting bending structure near stator core (1) tooth top place.
3. according to claim 1 have a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system, it is characterized in that: described two " L " shape diaphragm (7-1) and water conservancy diversion tail rod (7-2) as a whole metal partion (metp), bulk metal dividing plate is leaving preposition ventilation hole and rearmounted ventilation hole respectively near the tooth top place of stator core (1) and tooth root place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268577.0U CN204559259U (en) | 2015-04-29 | 2015-04-29 | There is a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268577.0U CN204559259U (en) | 2015-04-29 | 2015-04-29 | There is a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system |
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| Publication Number | Publication Date |
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| CN204559259U true CN204559259U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520268577.0U Active CN204559259U (en) | 2015-04-29 | 2015-04-29 | There is a spoonful large turbo-type generator for shape structural formula stator ventilation cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105939070A (en) * | 2016-05-11 | 2016-09-14 | 哈尔滨理工大学 | Air extraction type turbine generator stator capable of promoting heat dissipation |
| CN106026450A (en) * | 2016-05-19 | 2016-10-12 | 哈尔滨理工大学 | Turbonator cooling system provided with water cooling stator and inner fan type rotor |
-
2015
- 2015-04-29 CN CN201520268577.0U patent/CN204559259U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105939070A (en) * | 2016-05-11 | 2016-09-14 | 哈尔滨理工大学 | Air extraction type turbine generator stator capable of promoting heat dissipation |
| CN105939070B (en) * | 2016-05-11 | 2018-03-09 | 哈尔滨理工大学 | A kind of air-draft-type stator of steam turbine generator for being beneficial to radiating |
| CN106026450A (en) * | 2016-05-19 | 2016-10-12 | 哈尔滨理工大学 | Turbonator cooling system provided with water cooling stator and inner fan type rotor |
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