CN205791838U - There is water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor - Google Patents
There is water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor Download PDFInfo
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- CN205791838U CN205791838U CN201620456523.1U CN201620456523U CN205791838U CN 205791838 U CN205791838 U CN 205791838U CN 201620456523 U CN201620456523 U CN 201620456523U CN 205791838 U CN205791838 U CN 205791838U
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Abstract
The utility model discloses and have water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor, it relates to machine field.This utility model is by installing the wound water channel of stator inner loop and the outer circulating type water channel of stator respectively additional in the tooth crest of stator core segment and back of the yoke portion, rotor axial ventilating duct is offered in rotor tooth, rotor self-cooled fan blade is set in rotor axial ventilating duct, effectively enhance the heat-sinking capability of stator region and rotor region, the utilization rate of fluid is cooled down in improve steam turbine generator, significantly reduce the maximum temperature of stator region and rotor region, improve the ability of steam turbine generator safe and stable operation.
Description
Technical field
This utility model relates to having water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor, belongs to machine field.
Background technology
Traditional stator and the loss of rotor core are relatively big, and ventilating and cooling effect is poor, and the heat of generation can not be taken away by the cooling fluid of surrounding in time, and the temperature causing stator and rotor core is higher.In order to by the temperature limiting of each parts in steam turbine generator stator-rotator region in the limit of temperature rise that generator insulating material is allowed, when the specified operation of steam turbine generator or leading phase operation, the loss of each component needs the cooling fluid around flowed in the form of heat to take away, and then reduces the purpose of each member temperature of steam turbine generator.
Increase along with steam turbine generator single-machine capacity, the close obvious increase of generator magnetic, electromagnetic load and the thermic load of each component of electromotor are gradually increased, the temperature causing stator core, stator winding, rotor core and rotor windings is significantly raised, seriously limit the further increase of steam turbine generator capacity, and serious stator core of generating heat can produce thermal expansion, by warpage and the deformation because of squeezing action of stator core after the effect of contraction of electromotor inner fixing member, thus cause stator core loosening.Additionally, the temperature difference that rotor region is in axial direction can make rotor bar and stator bar produce thermal deformation and thermal stress, cause reduce the service life of rotor windings insulation and stator winding insulation, had influence on the stable operation of steam turbine generator.
Summary of the invention
The purpose of this utility model is to provide has water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor, to solve the problem that cause stator core, rotor core and rotor windings temperature are too high owing to the design of steam turbine generator stator-rotator zonal ventilation is unreasonable, thus in improving steam turbine generator stator-rotator region, cool down the utilization rate of fluid, it is effectively reduced the temperature of stator core, rotor core and rotor windings, improves the ability that steam turbine generator runs steadily in the long term.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor of the present utility model, including stator, rotor and the air gap between stator and rotor, described stator includes stator core segment, the stator upper strata winding being arranged in stator core segment and stator lower floor winding, it is arranged on the stator layer insulation between stator upper strata winding and stator lower floor winding, stator slot wedge, positioning bar, described stator core segment is the most equidistantly arranged, stator Radial ventilation duct it is provided with between adjacent stator core section, stator Radial ventilation duct is connected with described air gap, also include the outer circulating type water channel of stator and the wound water channel of stator inner loop, the outer circulating type water channel of described stator and the wound water channel of stator inner loop are tightly disposed in back of the yoke portion and the tooth crest of stator core segment respectively；Described stator region is divided into stator hot blast district and stator cold wind district, stator hot blast district and stator cold wind district to be alternately distributed vertically.
As preferably, described rotor includes rotor slot wedge, rotor windings, rotor tooth, rotor yoke, described rotor slot wedge and rotor windings are arranged in the groove of rotor, the trench bottom of rotor is provided with rotor ventilation from sub-slot hole, described rotor tooth is provided with rotor axial ventilating duct, and the both sides, air channel of rotor axial ventilating duct are provided with rotor self-cooled fan blade.Described rotor axial ventilating duct is distributed uniformly and circumferentially, and the cross section of rotor axial ventilating duct is circular or " bulb " shape.
As preferably, the cross section in described rotor ventilation from sub-slot hole is rectangle or trapezoidal, and trapezoidal long limit contacts with rotor windings.
The wound water channel of described stator inner loop includes stator inner loop wound water channel entrance, the wound water pipe of multiple stator inner loop, multiple stator inner loop wound water channel communicating pipe and the outlet of stator inner loop wound water channel, and in adjacent stators, circulating type water pipe was connected by stator inner loop wound water channel communicating pipe；The outer circulating type water channel of stator includes the outer circulating type water channel entrance of stator, the outer circulating type water pipe of multiple stator, multiple stator outer circulating type water channel communicating pipe and stator outer circulating type water channel outlet, and the outer circulating type water pipe of adjacent stators is connected circulating type water channel communicating pipe by stator is outer.The cross section of the outer circulating type water channel of described stator and the wound water channel of stator inner loop is rectangle, and the length of rectangle is equal with the thickness of stator core segment, a length of 5 mm-10 mm of rectangle, and the width of rectangle is 3 mm-6 mm.Being connected with cooling water in the wound water channel of stator inner loop and the outer circulating type water channel of stator, the flow velocity of cooling water is 1 m/s-3 m/s.The wound water channel of stator inner loop and the outer circulating type water channel of stator are made up of the low magnetic conductive material of high heat conduction.A diameter of 20 mm-35 mm of rotor axial ventilating duct.Rotor axial ventilating duct is arranged the most equably, and rotor axial ventilating duct is 20-25 in the number of circumferencial direction.2-5 rotor self-cooled fan blade it are placed with respectively in axial direction in the both sides of each rotor axial ventilating duct.The height of rotor self-cooled fan blade is less than or equal to the radius of rotor axial ventilating duct.
Described stator hot blast district includes stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district, and stator cold wind district includes stator the first cold wind district and stator the second cold wind district.
Described stator the first hot blast district, stator the first cold wind district, stator the second hot blast district, stator the second cold wind district, the wound water channel of all stator inner loops in stator the 3rd hot blast district are serially connected, and stator the first hot blast district, stator the first cold wind district, stator the second hot blast district, stator the second cold wind district, the outer circulating type water channel of all stators in stator the 3rd hot blast district are serially connected.
As preferably, the wound water channel of all stator inner loops in described stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is serially connected, and the outer circulating type water channel of all stators in stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is serially connected；The wound water channel of stator inner loop in stator the first cold wind district is connected with the wound water channel of stator inner loop in stator the second cold wind district；The stator outer circulating type water channel series connection in the outer circulating type water channel of the stator in stator the first cold wind district and stator the second cold wind district.In stator hot blast district, stator inner loop wound water channel entrance and the outer circulating type water channel entrance of stator are all connected with the cooling water that flow velocity is 1.5 m/s；Meanwhile, in stator cooling wind district, stator inner loop wound water channel entrance and the outer circulating type water channel entrance of stator are all connected with the cooling water that flow velocity is 1 m/s.The stator region temperature difference in axial direction and thermal stress can be reduced further.
As preferably, the wound water pipe of stator inner loop in the Ge Feng district in described stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is connected respectively；The outer circulating type water pipe of stator in the Ge Feng district in stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is connected respectively；The wound water pipe of stator inner loop in the Ge Feng district in stator the first cold wind district and stator the second cold wind district is connected respectively；The outer circulating type water pipe of stator in the Ge Feng district in stator the first cold wind district and stator the second cold wind district is connected respectively.In stator hot blast district, all stator inner loops wound water channel entrance and the outer circulating type water channel entrance of stator are all connected with the cooling water that flow velocity is 1.2 m/s；Meanwhile, in stator cooling wind district, all stator inner loops wound water channel entrance and the outer circulating type water channel entrance of stator are all connected with the cooling water that flow velocity is 0.8 m/s.Cooling water temperature in the outer circulating type water channel of the wound water channel of stator inner loop and stator can be offset raise and cause its cooling effect to be deteriorated the impact caused so that the stator core segment temperature difference in axial direction and thermal stress reduces further and stator lower floor winding and stator upper strata winding temperature in axial direction more equalize in stator hot blast district and stator cooling wind district.
Advantage of the present utility model: 1, the temperature of large-sized turbine generator stator core tooth and rotor surface is the highest, this utility model is by installing the wound water channel of stator inner loop and the outer circulating type water channel of stator respectively additional in the tooth crest of stator core segment and back of the yoke portion, cooling water in the wound water channel of stator inner loop and the outer circulating type water channel of stator can take away the heat of stator core segment effectively, reduce the temperature of stator core segment, reduce the stator region temperature difference in axial direction and thermal stress, the wound water channel of stator inner loop can also reduce the temperature cooling down fluid between rotor in air gap.
2, in rotor tooth, rotor axial ventilating duct is offered, rotor self-cooled fan blade is arranged in rotor axial ventilating duct, rotor axial ventilating duct increases the contact area of cooling fluid and rotor tooth, the speed of cooling fluid in the spin even faster of rotor self-cooled fan blade rotor axial ventilating duct, improve cooling fluid and take away the ability of rotor tooth heat, it will be apparent that reduce the temperature of rotor tooth.Rotor self-cooled fan blade also acts the purpose of total fluid flow in increasing steam turbine generator.
3, this utility model can strengthen the heat-sinking capability of stator region and rotor region effectively, the utilization rate of fluid is cooled down in improve steam turbine generator, significantly reduce the maximum temperature of stator region and rotor region, improve the ability of steam turbine generator safe and stable operation.
Accompanying drawing illustrates:
For ease of explanation, this utility model is embodied as and accompanying drawing is described in detail by following:
Fig. 1 is the axial sectional view of the steam turbine generator cooling system with water-cooled stator and fan inside formula rotor described in the utility model；
Fig. 2 is the circumferencial direction sectional view of the steam turbine generator cooling system rotor with water-cooled stator and fan inside formula rotor described in the utility model；
Fig. 3 is the circumferencial direction sectional view of the wound water channel of track ring in the steam turbine generator cooling system with water-cooled stator and fan inside formula rotor described in the utility model；
Fig. 4 is the perspective view of the wound water channel of stator inner loop in the steam turbine generator cooling system with water-cooled stator and fan inside formula rotor described in the utility model；
Fig. 5 is the perspective view of the outer circulating type water channel of stator in the steam turbine generator cooling system with water-cooled stator and fan inside formula rotor described in the utility model；
Fig. 6 is the circumferencial direction sectional view of the steam turbine generator cooling system rotor with water-cooled stator and fan inside formula rotor described in this utility model detailed description of the invention four；
Fig. 7 is the circumferencial direction sectional view of the steam turbine generator cooling system rotor with water-cooled stator and fan inside formula rotor described in this utility model detailed description of the invention five；
In figure: 1-stator core segment；2-stator Radial ventilation duct；3-stator lower floor winding；4-stator upper strata winding；5-positioning bar；6-stator slot wedge；7-stator layer insulation；Air gap between 8-rotor；9-rotor；9-1 is rotor tooth；9-2 is rotor yoke；10-rotor axial ventilating duct；11-rotor self-cooled fan；The wound water channel of 12-stator inner loop；12-1 is stator inner loop wound water channel entrance；12-2 is the wound water pipe of stator inner loop；12-3 is stator inner loop wound water channel communicating pipe；12-4 is the outlet of stator inner loop wound water channel；The outer circulating type water channel of 13-stator；13-1 is the outer circulating type water channel entrance of stator；13-2 is the outer circulating type water pipe of stator；13-3 is stator outer circulating type water channel communicating pipe；13-4 is stator outer circulating type water channel outlet；14-stator hot blast district；14-1 is stator the first hot blast district；14-2 is stator the second hot blast district；14-3 is stator the 3rd hot blast district；15-stator cold wind district；15-1 is stator the first cold wind district；15-2 is stator the second cold wind district；16-rotor slot wedge；17-rotor windings；18-ventilation from sub-slot hole.In figure, arrow cools down the flow direction of fluid in showing the steam turbine generator cooling system with water-cooled stator and fan inside formula rotor.
Detailed description of the invention:
For making the purpose of this utility model, technical scheme and advantage of greater clarity, below by the specific embodiment shown in accompanying drawing, this utility model is described.However, it should be understood that these describe the most exemplary, and it is not intended to limit scope of the present utility model.Additionally, in the following description, eliminate the description to known features and technology, to avoid unnecessarily obscuring concept of the present utility model.
nullDetailed description of the invention one: combine Fig. 1，Fig. 2，Fig. 3，Fig. 4 and Fig. 5 illustrates present embodiment，The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor of the present utility model，Including stator、Rotor 9 and the air gap between stator and rotor 8，Described stator includes stator core segment 1、The stator upper strata winding 4 being arranged in stator core segment 1 and stator lower floor winding 3、It is arranged on the stator layer insulation 7 between stator upper strata winding 4 and stator lower floor winding 3、Stator slot wedge 6、Positioning bar 5，Described stator core segment 1 is the most equidistantly arranged，Stator Radial ventilation duct 2 it is provided with between adjacent stator core section 1，Stator Radial ventilation duct 2 is connected with described air gap 8，Also include the outer circulating type water channel 13 of stator and the wound water channel of stator inner loop 12，The wound water channel of stator inner loop 12 is close to the tooth crest of stator core segment 1，The outer circulating type water channel 13 of stator is close to the back of the yoke portion of stator core segment 1；Described stator region is divided into stator hot blast district 14 and stator cold wind district 15, stator hot blast district 14 and stator cold wind district 15 to be alternately distributed vertically.
Described rotor 9 includes rotor slot wedge 16, rotor windings 17, rotor tooth 9-1, rotor yoke 9-2, described rotor slot wedge 16 and rotor windings 17 are arranged in the groove of rotor 9, the trench bottom of rotor 9 is provided with rotor ventilation from sub-slot hole 18, described rotor tooth 9-1 is provided with rotor axial ventilating duct 10, and the both sides, air channel of rotor axial ventilating duct 10 are provided with rotor self-cooled fan blade 11.Described rotor axial ventilating duct 10 is distributed uniformly and circumferentially, and the cross section of rotor axial ventilating duct 10 is circular.A diameter of 20 mm-35 mm of rotor axial ventilating duct 10, the present embodiment is taken as 30 mm.Rotor axial ventilating duct 10 is arranged the most equably, and rotor axial ventilating duct 10 is 20-25 in the number of circumferencial direction, and the present embodiment is taken as 22.Be placed with 2-5 rotor self-cooled fan blade 11 respectively in axial direction in the both sides of each rotor axial ventilating duct 10, the present embodiment is taken as 3.The height of rotor self-cooled fan blade 11 is less than or equal to the radius of rotor axial ventilating duct 10.The cross section in described rotor ventilation from sub-slot hole 18 is rectangle.
The wound water channel of described stator inner loop 12 includes stator inner loop wound water channel entrance 12-1, multiple stator inner loop wound water pipe 12-2, multiple stator inner loop wound water channel communicating pipe 12-3, stator inner loop wound water channel outlet 12-4, and in adjacent stators, circulating type water pipe 12-2 was connected by stator inner loop wound water channel communicating pipe 12-3.The outer circulating type water channel 13 of stator includes the outer circulating type water channel entrance 13-1 of stator, the outer circulating type water pipe 13-2 of multiple stator, multiple stator outer circulating type water channel communicating pipe 13-3, stator outer circulating type water channel outlet 13-4, and the outer circulating type water pipe 13-2 of adjacent stators is connected circulating type water channel communicating pipe 13-3 by stator is outer.The cross section of the wound water channel of stator inner loop 12 and the outer circulating type water channel 13 of stator is rectangle, and the length of rectangle is equal with the thickness of stator core segment 1, and a length of 5 mm-10 mm of rectangle, the present embodiment is taken as 8 mm.The width of rectangle is 3 mm-6 mm, and the present embodiment is taken as 4 mm.Being connected with cooling water in the wound water channel of stator inner loop 12 and the outer circulating type water channel 13 of stator, the flow velocity of cooling water is 1 m/s-3 m/s, and the present embodiment is taken as 1 m/s.The wound water channel of stator inner loop 12 and the outer circulating type water channel 13 of stator are made up of the low magnetic conductive material of high heat conduction.
Described stator hot blast district 14 includes stator the first hot blast district 14-1, stator the second hot blast district 14-2 and stator the 3rd hot blast district 14-3, and stator cold wind district 15 includes stator the first cold wind district 15-1 and stator the second cold wind district 15-2.The difference wound water channel of only one of which stator inner loop 12, the outer circulating type water channel 13 of stator in each hot blast district or cold wind district.Stator the first hot blast district 14-1, stator the first cold wind district 15-1, stator the second hot blast district 14-2, stator the second cold wind district 15-2, stator the 3rd hot blast district 14-3, the wound water channel of stator inner loop 12 in this five Ge Feng district is serially connected.Stator the first hot blast district 14-1, stator the first cold wind district 15-1, stator the second hot blast district 14-2, stator the second cold wind district 15-2, stator the 3rd hot blast district 14-3, the outer circulating type water channel 13 of the stator in this five Ge Feng district is serially connected.
The application is in many wind paths ventilation cooling system of original stator of steam turbine generator " two enter three goes out ", the tooth crest of stator core segment 1 and back of the yoke portion have installed the wound water channel of stator inner loop 12 and the outer circulating type water channel 13 of stator respectively additional, offering rotor axial ventilating duct 10 in rotor tooth 9-1, rotor self-cooled fan blade 11 is arranged in rotor axial ventilating duct 10 simultaneously.When rotor of steam turbo generator rotates, the tube-axial fan of electromotor both sides promotes cooling fluid to enter into the inside of steam turbine generator, one tunnel cooling fluid enters into the inside of rotor 9 from the both sides in rotor ventilation from sub-slot hole 18, increase rotor 9 and the surface coefficient of heat transfer of rotor windings 17, reducing rotor 9 and the temperature of rotor windings 17, this part cooling fluid enters into air gap 8 between rotor by rotor radial ventilating duct；One tunnel cooling fluid enters into the inside of rotor tooth 9-1 from the both sides of rotor axial ventilating duct 10, the speed cooling down fluid in the promotion lower rotor part axial ventilation road 10 of rotor self-cooled fan blade 11 is substantially accelerated, improve cooling fluid and take away the ability of rotor tooth 9-1 heat, increase the contact area of cooling fluid and rotor tooth 9-1, significantly reduce the temperature of rotor tooth 9-1, simultaneously, rotor self-cooled fan blade 11 also acts the purpose of total fluid flow in increasing steam turbine generator, this part cooling fluid enters into air gap 8 between rotor by rotor radial ventilating duct；One tunnel cooling fluid has respectively entered stator the first cold wind district 15-1 and stator the second cold wind district 15-2 by the air guide duct outside generator stator core section 1, air gap 8 between rotor are entered into after stator core segment 1 in stator cold wind district 15 is cooled down, this part cooling fluid increases the surface coefficient of heat transfer of stator core segment 1, reduces the temperature of stator cold wind district 15 internal stator iron core section 1；Another road cooling fluid enters directly into and enters back into stator the first hot blast district 14-1 and stator the 3rd hot blast district 14-3 between rotor after air gap 8, cool down the speed of fluid in accelerating stator the first hot blast district 14-1 and stator the 3rd hot blast district 14-3, reduce stator the first hot blast district 14-1 and the temperature of stator the 3rd hot blast district 14-3 internal stator iron core section 1.First three road cooling fluid enters into stator the second hot blast district 14-2 after converging in air gap 8 between rotor, the speed of fluid is cooled down in accelerating stator the second hot blast district 14-2, counteract cooling fluid temperature (F.T.) and uprise the impact causing its cooling effect to be deteriorated, reduce further the temperature of stator the second hot blast district 14-2 internal stator iron core section 1.Cooling water in the outer circulating type water channel 13 of the wound water channel of stator inner loop 12 and stator can take away the heat of stator core segment 1 effectively, reduces the temperature of stator core segment 1, reduces the stator region temperature difference vertically and thermal stress.Additionally, the wound water channel of stator inner loop 12 can also reduce the temperature cooling down fluid between rotor in air gap 8.
This utility model is by installing the wound water channel of stator inner loop 12 and the outer circulating type water channel 13 of stator respectively additional in the tooth crest of stator core segment and back of the yoke portion, in rotor tooth 9-1, offer rotor axial ventilating duct 10 simultaneously, rotor self-cooled fan blade 11 is arranged on the setting in rotor axial ventilating duct 10, defines and has around water-cooled stator and the novel steam generator cooling system of internal self-cooling fan formula rotor.Cooling water in the wound water channel of stator inner loop 12 and the outer circulating type water channel 13 of stator can take away the heat of stator core segment 1 effectively, reduce the temperature of stator core segment 1, reducing the stator region temperature difference in axial direction and thermal stress, the wound water channel of stator inner loop 12 can also reduce between rotor the temperature of cooling fluid in air gap.In addition, rotor axial ventilating duct 10 increases the contact area of cooling fluid and rotor tooth 9-1, the speed of cooling fluid in the spin even faster of rotor self-cooled fan blade 11 rotor axial ventilating duct 10, improve cooling fluid and take away the ability of rotor tooth 9-1 heat, it will be apparent that reduce the temperature of rotor tooth 9-1.Rotor self-cooled fan blade 11 also acts the purpose of total fluid flow in increasing steam turbine generator.This utility model can strengthen the heat-sinking capability of stator region and rotor region effectively, the utilization rate of fluid is cooled down in improve steam turbine generator, significantly reduce the maximum temperature of stator region and rotor region, improve the ability of steam turbine generator safe and stable operation.
Detailed description of the invention two: combine Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, present embodiment is with the difference of embodiment one, described stator the first hot blast district 14-1, the wound water channel of all stator inner loops 12 of stator the second hot blast district 14-2 and stator the 3rd hot blast district 14-3 are serially connected, i.e. the wound water channel of the stator inner loop in these three hot blast district is serially connected；Stator the first hot blast district 14-1, the outer circulating type water channel 13 of all stators of stator the second hot blast district 14-2 and stator the 3rd hot blast district 14-3 are serially connected, i.e. the outer circulating type water channel of the stator in these three hot blast district is serially connected.The wound water channel of stator inner loop 12 of stator the first cold wind district 15-1 is connected with the wound water channel of stator inner loop 12 of stator the second cold wind district 15-2；The outer circulating type water channel 13 of stator of the outer circulating type water channel 13 of the stator of stator the first cold wind district 15-1 and stator the second cold wind district 15-2 is connected.In stator hot blast district 14, stator inner loop wound water channel entrance 12-1 and the outer circulating type water channel entrance 13-1 of stator is all connected with the cooling water that flow velocity is 1.5 m/s；Meanwhile, in stator cold wind district 15, stator inner loop wound water channel entrance 12-1 and the outer circulating type water channel entrance 13-1 of stator is all connected with the cooling water that flow velocity is 1 m/s.The stator region temperature difference in axial direction and thermal stress can be reduced further.
Detailed description of the invention three: combine Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the stator inner loop wound water pipe 12-2 that present embodiment is in the Ge Feng district of described stator the first hot blast district 14-1, stator the second hot blast district 14-2 and stator the 3rd hot blast district 14-3 with the difference of embodiment one connect respectively；Stator the first hot blast district 14-1, stator the second hot blast district 14-2 and stator the 3rd hot blast district 14-3 Ge Feng district in the outer circulating type water pipe 13-2 of stator connect respectively；Stator inner loop wound water pipe 12-2 in the Ge Feng district of stator the first cold wind district 15-1 and stator the second cold wind district 15-2 connects respectively；The outer circulating type water pipe 13-2 of stator in the Ge Feng district of stator the first cold wind district 15-1 and stator the second cold wind district 15-2 connects respectively.In stator hot blast district 14, all stator inner loops wound water channel entrance 12-1 and the outer circulating type water channel entrance 13-1 of stator is all connected with the cooling water that flow velocity is 1.2 m/s；Meanwhile, in stator cooling wind district 15, all stator inner loops wound water channel entrance 12-1 and the outer circulating type water channel entrance 13-1 of stator is all connected with the cooling water that flow velocity is 0.8 m/s.Cooling water temperature in the outer circulating type water channel 13 of the wound water channel of stator inner loop 12 and stator can be offset raise and cause its cooling effect to be deteriorated the impact caused so that stator core segment 1 temperature difference in axial direction and thermal stress reduces further and stator lower floor winding 3 and stator upper strata winding 4 temperature in axial direction more equalize in stator hot blast district 14 and stator cooling wind district 15.Other detailed description of the invention is identical with embodiment one, specifically repeats no more.
Detailed description of the invention four: combine Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6 illustrate that the difference of present embodiment, present embodiment and embodiment one is that the cross section of rotor axial ventilating duct 10 is " bulb " shape.The rotor axial ventilating duct 10 that cross section is " bulb " shape increases the contact area of cooling fluid and rotor tooth 9-1, improve cooling fluid and take away the ability of rotor tooth 9-1 heat, reduce further the temperature of rotor tooth 9-1, also reduce the installation difficulty of rotor self-cooled fan blade 11 simultaneously.Other detailed description of the invention is identical with embodiment one, specifically repeats no more.
Detailed description of the invention five: combine Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 7 illustrate that present embodiment, present embodiment and the difference of embodiment one are that the cross section in rotor ventilation from sub-slot hole 18 is trapezoidal, and trapezoidal long limit contacts with rotor windings 17.Add and enter the flow cooling down fluid in rotor ventilation from sub-slot hole 18, the speed of fluid is cooled down in accelerating rotor ventilation from sub-slot hole 18, meanwhile, also increase cooling fluid and rotor 9 and the contact area of rotor windings 17, reduce further rotor 9 and the temperature of rotor windings 17.Other detailed description of the invention is identical with embodiment one, specifically repeats no more.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (10)
1. there is water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor, including stator, rotor and the air gap between stator and rotor, described stator includes stator core segment, the stator upper strata winding being arranged in stator core segment and stator lower floor winding, it is arranged on the stator layer insulation between stator upper strata winding and stator lower floor winding, stator slot wedge, positioning bar, described stator core segment is the most equidistantly arranged, stator Radial ventilation duct it is provided with between adjacent stator core section, stator Radial ventilation duct is connected with described air gap, it is characterized in that: also include the outer circulating type water channel of stator and the wound water channel of stator inner loop, the outer circulating type water channel of described stator and the wound water channel of stator inner loop are tightly disposed in back of the yoke portion and the tooth crest of stator core segment respectively；Described stator region is divided into stator hot blast district and stator cold wind district, stator hot blast district and stator cold wind district to be alternately distributed vertically.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 1, it is characterized in that: described rotor includes rotor slot wedge, rotor windings, rotor tooth, rotor yoke, described rotor slot wedge and rotor windings are arranged in the groove of rotor, the trench bottom of rotor is provided with rotor ventilation from sub-slot hole, described rotor tooth is provided with rotor axial ventilating duct, and the both sides, air channel of rotor axial ventilating duct are provided with rotor self-cooled fan blade.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 2, it is characterised in that: described rotor axial ventilating duct is distributed uniformly and circumferentially, and the cross section of rotor axial ventilating duct is circular.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 2, it is characterised in that: the cross section in described rotor ventilation from sub-slot hole is rectangle or trapezoidal, and trapezoidal long limit contacts with rotor windings.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 1, it is characterized in that: the wound water channel of described stator inner loop includes stator inner loop wound water channel entrance, the wound water pipe of multiple stator inner loop, multiple stator inner loop wound water channel communicating pipe, the outlet of stator inner loop wound water channel, and in adjacent stators, circulating type water pipe was connected by stator inner loop wound water channel communicating pipe；The outer circulating type water channel of stator includes the outer circulating type water channel entrance of stator, the outer circulating type water pipe of multiple stator, multiple stator outer circulating type water channel communicating pipe, stator outer circulating type water channel outlet, and the outer circulating type water pipe of adjacent stators is connected circulating type water channel communicating pipe by stator is outer.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 5, it is characterized in that: described stator hot blast district includes stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district, stator cold wind district includes stator the first cold wind district and stator the second cold wind district.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 6, it is characterized in that: described stator the first hot blast district, stator the first cold wind district, stator the second hot blast district, stator the second cold wind district, the wound water channel of all stator inner loops in stator the 3rd hot blast district are serially connected, stator the first hot blast district, stator the first cold wind district, stator the second hot blast district, stator the second cold wind district, the outer circulating type water channel of all stators in stator the 3rd hot blast district are serially connected.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 6, it is characterized in that: the wound water channel of all stator inner loops in described stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is serially connected, the outer circulating type water channel of all stators in stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is serially connected；The wound water channel of stator inner loop in stator the first cold wind district is connected with the wound water channel of stator inner loop in stator the second cold wind district；The stator outer circulating type water channel series connection in the outer circulating type water channel of the stator in stator the first cold wind district and stator the second cold wind district.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 6, it is characterised in that: the wound water pipe of stator inner loop in the Ge Feng district in described stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is connected respectively；The outer circulating type water pipe of stator in the Ge Feng district in stator the first hot blast district, stator the second hot blast district and stator the 3rd hot blast district is connected respectively；The wound water pipe of stator inner loop in the Ge Feng district in stator the first cold wind district and stator the second cold wind district is connected respectively；The outer circulating type water pipe of stator in the Ge Feng district in stator the first cold wind district and stator the second cold wind district is connected respectively.
The steam turbine generator cooling system with water-cooled stator and fan inside formula rotor the most according to claim 5, it is characterized in that: the cross section of the outer circulating type water channel of described stator and the wound water channel of stator inner loop is rectangle, and the length of rectangle is identical with the thickness of stator core segment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456523.1U CN205791838U (en) | 2016-05-19 | 2016-05-19 | There is water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620456523.1U CN205791838U (en) | 2016-05-19 | 2016-05-19 | There is water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor |
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| CN205791838U true CN205791838U (en) | 2016-12-07 |
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| CN201620456523.1U Expired - Fee Related CN205791838U (en) | 2016-05-19 | 2016-05-19 | There is water-cooled stator and the steam turbine generator cooling system of fan inside formula rotor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108711964A (en) * | 2018-06-13 | 2018-10-26 | 哈尔滨理工大学 | A kind of permanent magnet motor with built-in multistage fan formula two-way self-loopa ventilation cooling system |
| CN110022018A (en) * | 2017-12-22 | 2019-07-16 | 本田技研工业株式会社 | Rotating electric machine |
| CN110460180A (en) * | 2019-08-30 | 2019-11-15 | 东方电气集团东方电机有限公司 | A method of for improving stator shaft orientation temperature distribution evenness |
| WO2021037193A1 (en) * | 2019-08-30 | 2021-03-04 | 东方电气集团东方电机有限公司 | Method and device for improving uniformity of axial temperature distribution of stator |
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2016
- 2016-05-19 CN CN201620456523.1U patent/CN205791838U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110022018A (en) * | 2017-12-22 | 2019-07-16 | 本田技研工业株式会社 | Rotating electric machine |
| CN108711964A (en) * | 2018-06-13 | 2018-10-26 | 哈尔滨理工大学 | A kind of permanent magnet motor with built-in multistage fan formula two-way self-loopa ventilation cooling system |
| CN108711964B (en) * | 2018-06-13 | 2020-02-14 | 哈尔滨理工大学 | Permanent magnet motor with built-in multistage fan type double-path self-circulation ventilation cooling system |
| CN110460180A (en) * | 2019-08-30 | 2019-11-15 | 东方电气集团东方电机有限公司 | A method of for improving stator shaft orientation temperature distribution evenness |
| CN110460180B (en) * | 2019-08-30 | 2020-11-03 | 东方电气集团东方电机有限公司 | Method for improving axial temperature distribution uniformity of stator |
| WO2021037193A1 (en) * | 2019-08-30 | 2021-03-04 | 东方电气集团东方电机有限公司 | Method and device for improving uniformity of axial temperature distribution of stator |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180519 |