CN203774903U - Generator stator ventilating duct structure with multiple ventilation opening - Google Patents
Generator stator ventilating duct structure with multiple ventilation opening Download PDFInfo
- Publication number
- CN203774903U CN203774903U CN201420032623.2U CN201420032623U CN203774903U CN 203774903 U CN203774903 U CN 203774903U CN 201420032623 U CN201420032623 U CN 201420032623U CN 203774903 U CN203774903 U CN 203774903U
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- CN
- China
- Prior art keywords
- vent segment
- projection
- ventilating
- slot sheet
- ventilation ducts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 40
- 230000007306 turnover Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a generator stator ventilating duct structure with multiple ventilation openings. The generator stator ventilating duct structure comprises an upper ventilating slot sheet and a lower ventilating slot sheet, wherein a plurality of protrusions are arranged on the upper ventilating slot sheet, the plurality of protrusions on the upper ventilating slot sheet are arranged in at least one column along the flow direction of the cooing air on the upper ventilating slot sheet, a plurality of protrusions are arranged on the lower ventilating slot sheet, the plurality of protrusions on the lower ventilating slot sheet are arranged in at least one column along the flow direction of the cooing air on the lower ventilating slot sheet, the protrusions are arranged in the duct, and respectively form a plurality of disconnected ventilation openings with the upper ventilating slot sheet and the lower ventilating slot sheet. The generator stator ventilating duct structure with the multiple ventilation openings 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
Technical field
The utility model relates to electrical generator fields, relates in particular to a kind of generator unit stator ventilation ducts structure of many ventilating openings.
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 generator unit stator ventilation ducts structure of many ventilating openings 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 generator unit stator ventilation ducts structure of many ventilating openings, comprise vent segment and lower vent segment, it is characterized in that: on described upper vent segment, be provided with multiple projections, multiple projections on described upper vent segment at least form a line on upper vent segment along the mobile direction of refrigerating gas, on described lower vent segment, be provided with multiple projections, multiple projections on described lower vent segment at least form a line on lower vent segment along the mobile direction of refrigerating gas, described projection is positioned at passage, and form respectively the ventilating opening of multiple interruptions with upper vent segment and lower vent segment.
Projection on projection on described upper vent segment and lower vent segment is symmetrical.
In described same row projection, any projection is trapezoidal shape or inverted trapezoidal shape on vent segment, and adjacent projection is inverted trapezoidal shape or trapezoidal shape with it.
Described projection is by offering cut on vent segment and turnover forms, and gapped between projection on projection and lower vent segment on upper vent segment.
Employing the utility model has the advantage of:
One, in the utility model, along the mobile direction of refrigerating gas, at least one row projection is set on upper vent segment, one row projection is at least set on lower vent segment, in the time that refrigerating gas passes through ventilation ducts, refrigerating gas is alternately upset in projection cooperation on upper and lower vent segment, 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, make refrigerating gas and vent segment to contact dynamics stronger, be conducive to improve cooling effect and the cooling effectiveness of stator; In addition, projection forms respectively the structure of multiple intermittent air blast mouths with upper vent segment and lower vent segment, has significantly increased the contact area of refrigerating gas and vent segment, is conducive to improve the heat exchange effect of refrigerating gas and upper and lower vent segment.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, projection on projection on described upper vent segment and lower vent segment is symmetrical, this structure not only makes protruding processing more simple and convenient, also makes the quantity of ventilating opening increase, and is conducive to improve the contact area of refrigerating gas and upper and lower vent segment.
Three, in the utility model, in described same row projection, any projection is trapezoidal shape or inverted trapezoidal shape on vent segment, adjacent projection is inverted trapezoidal shape or trapezoidal shape with it, this structure makes the upset better effects if of projection 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, described projection is to form by offering cut on vent segment and turning down, and gapped between the projection on the projection on upper vent segment and lower vent segment, this structure makes projection and vent segment one-body molded, not only reduce protruding difficulty of processing, also ensured that the stability of projection on vent segment is better.
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.
Being labeled as in figure: 1, ventilation ducts supports, 2, upper vent segment, 3, lower vent segment, 4, projection, 5, ventilating opening.
Embodiment
A kind of generator unit stator ventilation ducts structure of many ventilating openings, 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, on described upper vent segment 2, be provided with multiple protruding 4, on described upper vent segment 2 multiple protruding 4 at least forms a line on upper vent segment 2 along the mobile direction of refrigerating gas, on described lower vent segment 3, be provided with multiple protruding 4, on described lower vent segment 3 multiple protruding 4 at least forms a line on lower vent segment 3 along the mobile direction of refrigerating gas, described protruding 4 are positioned at passage, and form respectively the ventilating opening 5 of multiple interruptions with upper vent segment 2 and lower vent segment 3.
Preferred implementation of the present utility model is, projection 4 on described upper vent segment 2 is to form by offering cut on upper vent segment 2 and turning down, projection 4 on described lower vent segment 3 is to form by offering cut on lower vent segment 3 and turning down, gapped between the projection 4 on the projection 4 on upper vent segment 2 and lower vent segment 3; And in same row projection 4, any projection 4 is trapezoidal shape or inverted trapezoidal shape on vent segment, adjacent projection 4 is inverted trapezoidal shape or trapezoidal shape with it, in same row projection 4, along the mobile direction of refrigerating gas, first projection 4 is trapezoidal shape on vent segment, second projection 4 is down shape on vent segment so, residue projection 4 is set by that analogy, such set-up mode makes the projection 4 can repeated multiple times upset refrigerating gas, ensure refrigerating gas under identical flow velocity relatively existing structure have higher coefficient of heat transfer.But be not limited to above-mentioned preferred arrangement, such as, described protruding 4 can also be set to square structure or semicircular structure etc.
In the utility model, each projection 4 forms a ventilating opening 5 with vent segment, the multiple protruding 4 multiple ventilating openings 5 that form with vent segment are interrupted and arrange in ventilation ducts, and the shape of ventilating opening 5 and quantity are definite according to the length of ventilation ducts, are advisable with flow-disturbing at utmost.
Claims (4)
1. the generator unit stator ventilation ducts structure of ventilating opening more than a kind, comprise vent segment (2) and lower vent segment (3), it is characterized in that: on described upper vent segment (2), be provided with multiple projections (4), multiple projections (4) on described upper vent segment (2) at least form a line on upper vent segment (2) along the mobile direction of refrigerating gas, on described lower vent segment (3), be provided with multiple projections (4), multiple projections (4) on described lower vent segment (3) at least form a line on lower vent segment (3) along the mobile direction of refrigerating gas, described projection (4) is positioned at passage, and form respectively the ventilating opening (5) of multiple interruptions with upper vent segment (2) and lower vent segment (3).
2. the generator unit stator ventilation ducts structure of a kind of many ventilating openings as claimed in claim 1, is characterized in that: the projection (4) on described upper vent segment (2) is symmetrical with the projection (4) on lower vent segment (3).
3. the generator unit stator ventilation ducts structure of a kind of many ventilating openings as claimed in claim 1 or 2, it is characterized in that: in described same row projections (4), any projection (4) is trapezoidal shape or inverted trapezoidal shape on vent segment, and adjacent projection (4) is inverted trapezoidal shape or trapezoidal shape with it.
4. the generator unit stator ventilation ducts structure of a kind of many ventilating openings as claimed in claim 1, it is characterized in that: described projection (4) is by offering cut on vent segment and turnover forms, and gapped between projection (4) on projection (4) and lower vent segment (3) on upper vent segment (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032623.2U CN203774903U (en) | 2014-01-20 | 2014-01-20 | Generator stator ventilating duct structure with multiple ventilation opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032623.2U CN203774903U (en) | 2014-01-20 | 2014-01-20 | Generator stator ventilating duct structure with multiple ventilation opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774903U true CN203774903U (en) | 2014-08-13 |
Family
ID=51292052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420032623.2U Expired - Lifetime CN203774903U (en) | 2014-01-20 | 2014-01-20 | Generator stator ventilating duct structure with multiple ventilation opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391213A (en) * | 2015-12-21 | 2016-03-09 | 哈尔滨理工大学 | Motor with good ventilation properties |
| CN109831042A (en) * | 2019-03-13 | 2019-05-31 | 浙江大学 | Ventilation slot support construction and motor ventilation slot structure including it |
-
2014
- 2014-01-20 CN CN201420032623.2U patent/CN203774903U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391213A (en) * | 2015-12-21 | 2016-03-09 | 哈尔滨理工大学 | Motor with good ventilation properties |
| CN109831042A (en) * | 2019-03-13 | 2019-05-31 | 浙江大学 | Ventilation slot support construction and motor ventilation slot structure including it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |