CN105810401A - High-capacity forced-oil circulation air cooler - Google Patents
High-capacity forced-oil circulation air cooler Download PDFInfo
- Publication number
- CN105810401A CN105810401A CN201610268819.5A CN201610268819A CN105810401A CN 105810401 A CN105810401 A CN 105810401A CN 201610268819 A CN201610268819 A CN 201610268819A CN 105810401 A CN105810401 A CN 105810401A
- Authority
- CN
- China
- Prior art keywords
- tube
- blade
- forced
- circulation air
- air cooler
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Abstract
The invention discloses a high-capacity forced-oil circulation air cooler. A heat conduction core component of the high-capacity forced-oil circulation air cooler adopts an elliptic bimetal composite integral fin tube structure, corrugated groove openings are formed in a cooling tube fin, eddy current generators are arranged in parallel on inner fin tubes in the fin tube, blades of cooling fans are formed by compression molding of high-strength aluminum alloy plates, and each fan motor is formed by optimally combining three specifications of motors and is provided with forward-swept wing type blades, so the attack angle of the blades is expanded, the curvature of each part on the surface of each blade is changed, the centrifugal force of the fans is loaded to a mainstream, a laminar condition is ensured, the rotational speed is reduced, and low noise and high capacity of the cooler are achieved; and on the condition that the wind speed and the oil flow quantity are the same, the total heat conduction coefficient K value is improved by 30% than that of the same specification of a round fin tube product.
Description
Technical field
The invention belongs to transformer cooling device, the chiller of a kind of high pressure or ultrahigh pressure large-scale oil immersed power transformer 720MVA～1200MVA/220KV～500KV is provided especially, be a kind of Large Copacity forced oil-circulated air-cooled device.
Background technology
At present, forced oil-circulated air cooler for transformer is made up of upper chamber, lower oil chamber, side plate, tube sheet, cooler tube bundle, pressing plate, ventilating duct, terminal box etc., cooling tube in cooling tube bundle is bimetallic or monometallic finned tube, and fan electromotor is asynchronous machine, and its weak point is:
1, there is contact resistance in finned tube and base tube, and the big finned tube of windage selects number many, and cooler body dimension is long, exceeds standard with sleeve pipe external insulation distance.
2, monometallic tube plate structure is expanding joint process easy to leak.
3, asynchronous machine efficiency is low, increases cooler subsidiary engine loss.
Summary of the invention
It is an object of the invention to provide the Large Copacity forced-oil circulation air cooler that a kind of heat transfer efficiency is high, subsidiary engine loss is low, can effectively solve the problems referred to above.
The technical scheme is that Large Copacity forced-oil circulation air cooler, including: upper chamber 1, lower oil chamber 2, cooler body 3, ventilating duct 4, cooler fan 5, oil pump 6, tube bundle 7, described tube bundle 7 is ellipse bimetallic compound entirety rolled fin tube bundle, cooling tube in described tube bundle 7 is oval double metal finned pipe, the flat finned tube 8 of the integral fins 8b of processing is automatically controlled including the outer wall computer at oval base tube 8a, the metal tube of the another kind of metal arranged on the inwall of oval base tube 8a, described fin 8b outer rim has ripple otch 10, described oval double metal finned pipe built in eddy current generator 11.
Preferably, described metal tube is inwall is the oval pipe of smooth surface.
Preferably, described metal tube is the inwall internally finned tube 9 with straight rib.
Preferably, described metal tube is the inwall drop shaped tube with spiral ribs.
Preferably, described cooler fan 5 motor speed is 8 grades, 10 grades or 12 grades.
Preferably, described cooler fan 5 has 4-6 buzzard-type wing type blade, adopt high-strength aluminium alloy plate compression molding, or type casting moulding or FRP material mould molding, the root of blade intermediate radial section and thick middle, thin edge, it is about 20-25mm from root and thick middle, it is gradually transitions outer rim 6-10mm, the angle of blade and blade Plane of rotation is gradually transitions 30 ° of blade outer rim from 60 °, blade front surface is irregular concave curved surface, root radius of curvature is smaller is between 100～120mm, blade intermediate curvature radius is more greatly between 200mm～260mm, blade outer rim radius of curvature is between 140～170mm.
The present invention has following beneficial effect:
1, the present invention core parts that conduct heat adopt computer to automatically control the ellipse bimetallic entirety composite fin tube of processing, and compound is tight, and thermal contact resistance is little, technique is advanced, and windage is little, and heat transfer efficiency is high, elliptical tube tube bank heat exchange amount restrains raising 15% than round tube, and resistance reduces by 18%.
2, due in the present invention fin outer rim have corrugated notch, make gas side produce turbulent flow, air side disturbance is strengthened, and destroys flow boundary layer air, improves gas side heat transfer coefficient.
3, due in the present invention finned tube inwall be provided with straight rib or spiral ribs, increase intraductal heat transfer area, large diameter pipe minor diameter, equivalent diameter is little and arranges vortex generator in pipe, destroy laminar sublayer, produce strong turbulent flow, produce higher heat transfer efficiency at low flow rates, improving oil side coefficient of heat transfer K value, Large Copacity forced oil-circulated air-cooled device cooling capacity can reach 400-750KW/40K.
4, cooler fan plays a crucial role in forced air cooler, and the present invention adopts buzzard-type wing type blade, and centrifugal force is loaded into main flow, improves efficiency and the performance of fan, reduces noise.
5, the cooling tube of the present invention adopts ellipse bimetallic entirety composite fin tube, good rigidly, and leak-preventing ability is strong, and reliability is high.
6, product of the present invention is single-circuit configurations, and easy cleaning has ONAN6%, ONAF12%, OFAF100%.
7, product of the present invention can meet high pressure or the various demands of ultrahigh pressure large-scale electric power oil-immersed type transformer user.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention；
Fig. 2 is the right view of the present invention；
Fig. 3 is the structural representation of oval double metal finned pipe in the present invention；
Fig. 4 is the sectional view of the A-A of Fig. 3；
Fig. 5 is the structural representation of vortex generator in the present invention；
In figure: 1, upper chamber；2, lower oil chamber；3, cooler body；4, ventilating duct；5, cooler fan；6, oil pump；7, tube bundle；8, flat finned tube；8a, oval base tube；8b, fin；9, inwall is with the internally finned tube of straight rib；10, ripple otch；11, vortex generator.
Detailed description of the invention
Describe the present invention below in conjunction with drawings and Examples.
As Figure 1-5, Large Copacity forced-oil circulation air cooler, including: upper chamber 1, lower oil chamber 2, cooler body 3, ventilating duct 4, cooler fan 5, oil pump 6, tube bundle 7, tube bundle 7 is ellipse bimetallic compound entirety rolled fin tube bundle, cooling tube in tube bundle 7 is oval double metal finned pipe, the flat finned tube 8 of the integral fins 8b of processing is automatically controlled including the outer wall computer at oval base tube 8a, the inwall of the another kind of metal arranged on the inwall of oval base tube 8a is with the internally finned tube 9 of straight rib, fin 8b outer rim has ripple otch 10, oval double metal finned pipe built in eddy current generator 11, the heat transfer efficiency of above-mentioned forced oil-circulated air-cooled device wind side can be improved further.
Cooler fan 5 of the present invention adopts 3 kinds of specification motor optimization compositions, and motor speed is 8 grades, 10 grades or 12 grades.Cooler fan 5 has 4-6 buzzard-type wing type blade, adopt high-strength aluminium alloy plate compression molding, or type casting moulding or FRP material mould molding, the root of blade intermediate radial section and thick middle, thin edge, it is about 20-25mm from root and thick middle, it is gradually transitions outer rim 6-10mm, the angle of blade and blade Plane of rotation is gradually transitions 30 ° of blade outer rim from 60 °, blade front surface is irregular concave curved surface, root radius of curvature is smaller is between 100～120mm, blade intermediate curvature radius is more greatly between 200mm～260mm, blade outer rim radius of curvature is between 140～170mm.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalences made according to spirit of the invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. Large Copacity forced-oil circulation air cooler, including: upper chamber (1), lower oil chamber (2), cooler body (3), ventilating duct (4), cooler fan (5), oil pump (6), tube bundle (7), it is characterized in that, described tube bundle (7) is ellipse bimetallic compound entirety rolled fin tube bundle, cooling tube in described tube bundle (7) is oval double metal finned pipe, the flat finned tube (8) of the integral fins (8b) of processing is automatically controlled including the outer wall computer oval base tube (8a), the metal tube of the another kind of metal arranged on the inwall of oval base tube (8a), described fin (8b) outer rim has ripple otch (10), described oval double metal finned pipe built in eddy current generator (11).
2. the Large Copacity forced-oil circulation air cooler described in claim 1, it is characterised in that described metal tube is inwall is the oval pipe of smooth surface.
3. the Large Copacity forced-oil circulation air cooler described in claim 1, it is characterised in that described metal tube is the inwall internally finned tube (9) with straight rib.
4. the Large Copacity forced-oil circulation air cooler described in claim 1, it is characterised in that described metal tube is the inwall drop shaped tube with spiral ribs.
5. the Large Copacity forced-oil circulation air cooler described in claim 1, it is characterised in that described cooler fan (5) motor speed is 8 grades, 10 grades or 12 grades.
6. the Large Copacity forced-oil circulation air cooler described in claim 1, it is characterized in that, described cooler fan (5) has 4-6 buzzard-type wing type blade, adopt high-strength aluminium alloy plate compression molding, or type casting moulding or FRP material mould molding, the root of blade intermediate radial section and thick middle, thin edge, it is about 20-25mm from root and thick middle, it is gradually transitions outer rim 6-10mm, the angle of blade and blade Plane of rotation is gradually transitions 30 ° of blade outer rim from 60 °, blade front surface is irregular concave curved surface, root radius of curvature is smaller is between 100～120mm, blade intermediate curvature radius is more greatly between 200mm～260mm, blade outer rim radius of curvature is between 140～170mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268819.5A CN105810401A (en) | 2016-04-27 | 2016-04-27 | High-capacity forced-oil circulation air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268819.5A CN105810401A (en) | 2016-04-27 | 2016-04-27 | High-capacity forced-oil circulation air cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105810401A true CN105810401A (en) | 2016-07-27 |
Family
ID=56458708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610268819.5A Pending CN105810401A (en) | 2016-04-27 | 2016-04-27 | High-capacity forced-oil circulation air cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105810401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017077A (en) * | 2017-05-22 | 2017-08-04 | 江苏海鼎电气科技有限公司 | A kind of forced oil-circulation cooled high-power transformer cooler |
| CN108597763A (en) * | 2018-04-19 | 2018-09-28 | 保定多田冷却设备有限公司 | Transformer forced oil-circulation cooling tube mixing arrangement type forced air cooler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152283Y (en) * | 1993-02-03 | 1994-01-05 | 江阴市电力设备冷却器厂 | Forced oil circulation air cooling device |
| CN2323459Y (en) * | 1997-11-21 | 1999-06-09 | 施毅 | Enforced oil circulation air cooler |
| CN2383030Y (en) * | 1999-07-22 | 2000-06-14 | 东北输变电设备集团鞍山冷却器有限公司 | Low noise forced oil circulation air cooler |
| CN201527880U (en) * | 2009-07-31 | 2010-07-14 | 李鹏飞 | Forced oil circulation air cooler for transformer |
| CN203706791U (en) * | 2013-11-07 | 2014-07-09 | 江苏腾奇电力设备科技有限公司 | Novel energy-saving finned radiator for transformers |
| US20150310977A1 (en) * | 2004-06-17 | 2015-10-29 | Ctm Magnetics, Inc. | Distributed gap inductor filter apparatus and method of use thereof |
| CN205621561U (en) * | 2016-04-27 | 2016-10-05 | 沈阳天通电气有限公司 | Strong oil circulation forced air cooler of large capacity |
-
2016
- 2016-04-27 CN CN201610268819.5A patent/CN105810401A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152283Y (en) * | 1993-02-03 | 1994-01-05 | 江阴市电力设备冷却器厂 | Forced oil circulation air cooling device |
| CN2323459Y (en) * | 1997-11-21 | 1999-06-09 | 施毅 | Enforced oil circulation air cooler |
| CN2383030Y (en) * | 1999-07-22 | 2000-06-14 | 东北输变电设备集团鞍山冷却器有限公司 | Low noise forced oil circulation air cooler |
| US20150310977A1 (en) * | 2004-06-17 | 2015-10-29 | Ctm Magnetics, Inc. | Distributed gap inductor filter apparatus and method of use thereof |
| CN201527880U (en) * | 2009-07-31 | 2010-07-14 | 李鹏飞 | Forced oil circulation air cooler for transformer |
| CN203706791U (en) * | 2013-11-07 | 2014-07-09 | 江苏腾奇电力设备科技有限公司 | Novel energy-saving finned radiator for transformers |
| CN205621561U (en) * | 2016-04-27 | 2016-10-05 | 沈阳天通电气有限公司 | Strong oil circulation forced air cooler of large capacity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017077A (en) * | 2017-05-22 | 2017-08-04 | 江苏海鼎电气科技有限公司 | A kind of forced oil-circulation cooled high-power transformer cooler |
| CN108597763A (en) * | 2018-04-19 | 2018-09-28 | 保定多田冷却设备有限公司 | Transformer forced oil-circulation cooling tube mixing arrangement type forced air cooler |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |
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| WD01 | Invention patent application deemed withdrawn after publication |