CN203774904U - Turbulence type stator ventilating duct structure - Google Patents

Turbulence type stator ventilating duct structure Download PDF

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Publication number
CN203774904U
CN203774904U CN201420032627.0U CN201420032627U CN203774904U CN 203774904 U CN203774904 U CN 203774904U CN 201420032627 U CN201420032627 U CN 201420032627U CN 203774904 U CN203774904 U CN 203774904U
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China
Prior art keywords
fin
vent segment
row
stator
ventilation ducts
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CN201420032627.0U
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Chinese (zh)
Inventor
刘传坤
廖毅刚
蒋富强
钱锋
杜国斌
罗永刚
郭宇
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Dongfang Electric Machinery Co Ltd DEC
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Dongfang Electric Machinery Co Ltd DEC
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Priority to CN201420032627.0U priority Critical patent/CN203774904U/en
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Abstract

The utility model discloses a turbulence type stator ventilating duct structure, which comprises an upper ventilating slot sheet and a lower ventilating slot sheet, wherein at least two fin columns composed of a plurality of fins are obliquely arranged on the upper ventilating slot sheet, at least two fin columns composed of a plurality of fins are obliquely arranged on the lower ventilating slot sheet, and each fin is provided with a plurality of through holes. The turbulence type stator ventilating duct structure can improve the turbulence intensity of the cooling air in the ventilating duct, can increase the contact force and contact area of the cooling air and the ventilating slot sheets, enhances the heat exchange effect of the cooling air and the stator on the premise of ensuring the full utilization of the cooling air, and achieves the purpose of improving stator cooling effect and cooling efficiency.

Description

A kind of disturbed flow type stator ventilation ducts structure
Technical field
The utility model relates to electrical generator fields, relates in particular to a kind of disturbed flow type stator ventilation ducts structure.
Background technology
Along with the progress of design of electrical motor and manufacturing technology, the capacity of motor improves constantly, and power density constantly increases, and it is more and more serious that its loss, heating and ventilating problem also become.In order to ensure reliability service and the useful life of large-size machine, be necessary to improve ventilation effect and reduce the wastage.
The loss of motor generally comprises rotor copper loss (resistance loss), core loss, bearing loss, draft loss and other losses, and wherein draft loss is occupied very large proportion in motor total losses.Motor is in running, stator winding produces copper loss and generates heat, stator core, because iron loss is generated heat, is mainly taken away the heat of stator winding and stator core generation by the refrigerating gas of the generator unit stator ventilation ducts structure of flowing through, thereby is ensured that stator temperature rise is in prescribed limit.Stator ventilation ducts supports (ventilation ducts of the prior art is supported for channel-section steel) by vent segment and multiple ventilation ducts and forms, stator ventilation ducts comprises multiple ventilation ducts structures, the passage that each ventilation ducts structure is supported by two ventilation ductss and upper and lower vent segment surrounds forms, and heat exchange occurs on the surface that the refrigerating gas of the stator ventilation ducts of flowing through and vent segment and ventilation ducts support.But in the prior art, the cooling effect of stator depends primarily on the effect of the refrigerating gas of the generator unit stator ventilation ducts structure of flowing through and the surface generation heat exchange of vent segment and ventilation ducts support, wherein, the heat exchange area of refrigerating gas flow, flow velocity and fluidised form, vent segment etc. is all the principal elements that affect stator heat radiation.And existing generator unit stator ventilation ducts structure is limited by area of dissipation and refrigerating gas fluidised form, cooling effectiveness is lower, and stator temperature rise also just can not get effectively reducing.
In order to solve the problems of the technologies described above, following technology is proposed in prior art:
As China Patent No. " 201110372923.6 " discloses a kind of vent segment and with the ventilation ducts of this vent segment and with the motor of this ventilation ducts, its open day is on 06 13rd, 2012, its technical scheme comprises vent segment body, on vent segment body, along wind ditch wind direction, fin is set, described fin and vent segment body form angle.But in actual use, because fin is arranged on along ventilation ducts wind direction on the body of vent segment, and fin and vent segment body form angle, this just makes in same ventilation ducts, along the mobile direction of refrigerating gas, same column fin on same vent segment is all on same straight line, cause fin poor to the disturbance ability of refrigerating gas, can not make refrigerating gas in ventilation ducts, form disorderly turbulent flow, make the heat exchange effect of vent segment and refrigerating gas poor, low to the cooling efficiency of stator.In addition, in said structure, refrigerating gas when the ventilation ducts with the dynamics that contacts of fin a little less than, not only cause the utilance of refrigerating gas low, also cause refrigerating gas poor to the cooling-down effect of stator.
Utility model content
The purpose of this utility model is to overcome the above-mentioned problems in the prior art, a kind of disturbed flow type stator ventilation ducts structure is provided, the utility model can either improve refrigerating gas mobile turbulence level in ventilation ducts, can improve again the dynamics that contacts and the contact area of refrigerating gas and vent segment, ensure under the prerequisite that makes full use of refrigerating gas, strengthen the heat exchange effect of refrigerating gas and stator, reach the object that improves stator cooling effect and cooling effectiveness.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of disturbed flow type stator ventilation ducts structure, comprise vent segment and lower vent segment, it is characterized in that: described upper vent segment tilts and is provided with at least two and is listed as the fin being made up of multiple fins and is listed as, described lower vent segment tilts and is provided with at least two and is listed as the fin being made up of multiple fins and is listed as, and on described each fin, is provided with multiple through holes.
Described through hole parallels with the flow direction of refrigerating gas.
Fin on described upper vent segment is classified two row as, fin on described lower vent segment is classified two row as, fin on same vent segment in two fins row is dislocatedly distributed, and on same vent segment, the fin in two fins row is splayed same facing in perspective plane.
Fin row on described upper vent segment are symmetrical with the fin row on lower vent segment.
Employing the utility model has the advantage of:
One, the utility model tilts at least two row fin row is set at upper vent segment, tilt at least two row fin row are set at lower vent segment, in the time that refrigerating gas passes through ventilation ducts, fin row in upper and lower vent segment coordinate alternately upsets refrigerating gas repeatedly, under the prerequisite that does not need to improve the mobile speed of refrigerating gas, just can make refrigerating gas form disorderly turbulent flow fluidised form, be conducive to improve the heat exchange effect of refrigerating gas and vent segment; In addition, on fin, offer the structure of through hole, make refrigerating gas and to carry out coolingly to fin through through hole two aspects from the surface of fin, be conducive to accelerate radiating rate.Compared with the prior art that is representative with China Patent No. " 201110372923.6 ", the utility model not only can improve the cooling effect of stator and improve the cooling effectiveness of stator, can also make full use of refrigerating gas, higher to the utilance of refrigerating gas.
Two, in the utility model, described through hole parallels with the flow direction of refrigerating gas, and this structure has further increased the contact area of refrigerating gas and fin, has improved the cooling rate of stator.
Three, in the utility model, fin on described same vent segment in two fin row is dislocatedly distributed, and the fin on same vent segment in two fins row is splayed same facing in perspective plane, this structure makes the upset better effects if of fin to refrigerating gas, ensures that refrigerating gas relative existing structure under identical flow velocity has higher coefficient of heat transfer.
Four, in the utility model, the fin row on described upper vent segment are symmetrical with the fin row on lower vent segment, and this structure can be carried out refrigerating gas comparatively equably to stator by fin cooling, is conducive to improve cooling effect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A partial sectional view in Fig. 1.
Fig. 3 is the structural representation of fin in the utility model.
Being labeled as in figure: 1, ventilation ducts supports, 2, upper vent segment, 3, lower vent segment, 4, fin, 5, through hole.
Embodiment
A kind of disturbed flow type stator ventilation ducts structure, comprise that ventilation ducts supports 1, the upper surface of ventilation ducts support 1 is connected with upper vent segment 2, lower surface is connected with lower vent segment 3, described upper vent segment 2 tilts and is provided with at least two and is listed as the fin being made up of multiple fins 4 and is listed as, described lower vent segment 3 tilts and is provided with at least two and is listed as the fin being made up of multiple fins 4 and is listed as, and on described each fin 4, is provided with multiple through holes 5.
Preferred implementation of the present utility model is, because fin 4 is inclined on vent segment, the windward side of fin 4 is crossing with the flow direction of refrigerating gas, there is certain angle between the two, therefore, the direction of offering of through hole 5 parallels with the flow direction of refrigerating gas, can increase the contact area of refrigerating gas and fin 4.
Another preferred implementation of the present utility model is, fin on described upper vent segment 2 is classified two row as, fin on described lower vent segment 3 is classified two row as, fin row on described upper vent segment 2 are symmetrical with the fin row on lower vent segment 3, and the fin 4 on same vent segment in two fins row is dislocatedly distributed, the fin 4 on same vent segment in two fins row is splayed same facing in perspective plane.Above-mentioned set-up mode is preferably, but is not limited to above-mentioned optimal way, and for example, the fin 4 of the fin 4 on described upper vent segment 2 on also can following vent segment 3 is dislocatedly distributed.
In the utility model, gapped between the fin 4 in the fin 4 in upper vent segment 2 and lower vent segment 3, and fin 4 quantity in fin row determine according to the length of ventilation ducts, be advisable with flow-disturbing at utmost.
In the utility model, in order to reduce the difficulty of processing of fin 4, described fin 4 preferably forms by offering cut on vent segment and turning down, but also independently fin 4 can be set on vent segment.
In the utility model, described fin 4 is preferably square laminated structure, but also can be other frame structure or bellows structure.

Claims (4)

1. a disturbed flow type stator ventilation ducts structure, comprise vent segment (2) and lower vent segment (3), it is characterized in that: described upper vent segment (2) tilts and is provided with at least two and is listed as the fin row that are made up of multiple fins (4), described lower vent segment (3) tilts and is provided with at least two and is listed as the fin row that are made up of multiple fins (4), is provided with multiple through holes (5) on described each fin (4).
2. a kind of disturbed flow type stator ventilation ducts structure as claimed in claim 1, is characterized in that: described through hole (5) parallels with the flow direction of refrigerating gas.
3. a kind of disturbed flow type stator ventilation ducts structure as claimed in claim 1 or 2, it is characterized in that: the fin on described upper vent segment (2) is classified two row as, fin on described lower vent segment (3) is classified two row as, fin (4) on same vent segment in two fins row is dislocatedly distributed, and on same vent segment, the fin (4) in two fins row is splayed same facing in perspective plane.
4. a kind of disturbed flow type stator ventilation ducts structure as claimed in claim 3, is characterized in that: the fin row on described upper vent segment (2) are symmetrical with the fin row on lower vent segment (3).
CN201420032627.0U 2014-01-20 2014-01-20 Turbulence type stator ventilating duct structure Active CN203774904U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420032627.0U CN203774904U (en) 2014-01-20 2014-01-20 Turbulence type stator ventilating duct structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420032627.0U CN203774904U (en) 2014-01-20 2014-01-20 Turbulence type stator ventilating duct structure

Publications (1)

Publication Number Publication Date
CN203774904U true CN203774904U (en) 2014-08-13

Family

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Application Number Title Priority Date Filing Date
CN201420032627.0U Active CN203774904U (en) 2014-01-20 2014-01-20 Turbulence type stator ventilating duct structure

Country Status (1)

Country Link
CN (1) CN203774904U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108282039A (en) * 2017-12-07 2018-07-13 浙江大学 A kind of vortex heat dissipation stator ventilating system of welding fin
CN109831042A (en) * 2019-03-13 2019-05-31 浙江大学 Ventilation slot support construction and motor ventilation slot structure including it

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108282039A (en) * 2017-12-07 2018-07-13 浙江大学 A kind of vortex heat dissipation stator ventilating system of welding fin
CN109831042A (en) * 2019-03-13 2019-05-31 浙江大学 Ventilation slot support construction and motor ventilation slot structure including it
WO2020182186A1 (en) * 2019-03-13 2020-09-17 浙江大学 Ventilation slot support structure and motor ventilation slot structure comprising same

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