CN114825783A - Electromagnetic shielding and cooling system for steam turbine generator structural part - Google Patents
Electromagnetic shielding and cooling system for steam turbine generator structural part Download PDFInfo
- Publication number
- CN114825783A CN114825783A CN202210477314.5A CN202210477314A CN114825783A CN 114825783 A CN114825783 A CN 114825783A CN 202210477314 A CN202210477314 A CN 202210477314A CN 114825783 A CN114825783 A CN 114825783A
- Authority
- CN
- China
- Prior art keywords
- cooling system
- electromagnetic shielding
- wall
- water
- shield
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008676 import Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
- H02K11/014—Shields associated with stationary parts, e.g. stator cores
- H02K11/0141—Shields associated with casings, enclosures or brackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to an electromagnetic shielding and cooling system for a steam turbine generator structural member, which consists of an electromagnetic shielding device and a cooling structure, wherein the electromagnetic shielding device is arranged on a stator pressing ring of a steam turbine generator. The electromagnetic shielding and cooling device is arranged in an operating turbonator, reduces electromagnetic force and eddy current loss on an end structural part in the operating process of the turbonator, and the water cooling system is connected with a water cooling system of the turbonator to improve the heat dissipation condition of the turbonator.
Description
Technical Field
The invention relates to the technical field of turbonators, in particular to an electromagnetic shielding and cooling system for a turbonator structural member.
Background
The steam turbine generator is an important device in an electric power system, and with the increasing of the single-machine capacity of the generator, the loss and the vibration generated on the structural component become problems to be solved, and the heat radiation performance of the steam turbine generator needs to be improved. However, the steam turbine generator using only air cooling and no shielding is not satisfactory, and a new method is required to solve the above problems in order to reduce heat generation and vibration of the structural members caused by leakage flux from the ends of the stator and to improve the heat radiation performance of the steam turbine generator.
Disclosure of Invention
The invention aims to provide an electromagnetic shielding and cooling system for a steam turbine generator structural member, which reduces loss and vibration generated on the structural member and improves the heat dissipation performance of the steam turbine generator.
The technical scheme of the invention is as follows,
the electromagnetic shielding and water cooling system comprises a bottom shield (101), a circular outer wall (102), a rotary bent inner wall (103), a top shield (104) and a water cooling inlet and outlet (105). The circular outer wall (102) is connected to the bottom shield (101), the inner wall (103) which is bent in a rotary mode is connected to the bottom shield (101), the top shield (104) is installed on the circular outer wall (102), the water-cooling inlet and outlet (105) is connected to the circular outer wall (102), and the water-cooling inlet and outlet (105) is connected with an external water-cooling system. And the further scheme is as follows: the material used is copper, and the circular outer wall (102) is provided with two circular holes. The bottom shield (101), the circular outer wall (102), the inner wall (103) which is bent in a rotary mode, the top shield (104) and the water-cooling inlet and outlet (105) are connected through welding.
The invention has the beneficial effects that: the double-layer shielding structure can reduce the electromagnetic force on the end structural part and the eddy current loss on the end structural part, reduce the heat and the loss generated on the structural part, and the annular water channel can increase the contact area between the circulating water cooling structure and the motor structure, so that the heat dissipation performance of the end part of the motor can be improved, the stability of the steam turbine generator in the operation process is improved, and the negative influence caused by overhigh temperature is prevented.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a front view of the present invention.
FIG. 3 is a cross-sectional view taken along line A-A of the present invention.
Fig. 4 is an overall schematic view of the present invention.
Detailed Description
The electromagnetic shielding and water cooling system comprises a bottom shield (101), a circular outer wall (102), a rotary bent inner wall (103), a top shield (104) and a water cooling inlet and outlet (105). The bottom shield is enough to cover the surface of the pressing ring, can shield the pressing ring (106) and a magnetic field therein, and is perforated on the bottom shield (101) and connected to the outer wall of the pressing ring (106) through bolts. Water inlet and delivery port on circular outer wall (102), its material is the same with shielding material, all be copper, connect on bottom shield (101) through the welded mode, the height of circular outer wall is 5mm, the crooked inner wall of gyration (103) copper is bent the preparation, thickness is 5mm, the copper connection site of bending is the welded mode equally and is connected, the welding is on bottom shield (101) at last, the external diameter of top shield (104) is less than bottom shield (101), can cover circular outer wall completely can, the welding is on circular outer wall (102) top, the shape of water-cooling import and export (105) is the rectangle, height 3mm, width 5mm, thickness 2.5mm, it is unanimous with the hole size on circular outer wall (102), connect on circular outer wall (102) through the welded mode, water-cooling import and export (105) are connected with outside water cooling system. The surfaces of all parts need to be coated with insulating paint.
When the generator operates in a rated state, eddy currents on the structural member generated by a leakage magnetic field generated at the end part can be absorbed by the top layer shield and the bottom layer shield, so that the magnetic field cannot enter the interior of the structural member. Because the magnetic field can not enter the structure, the electromagnetic force and the eddy current loss can not be generated, and the temperature on the structure is reduced. When the water inlet and the water outlet are connected into the circulating water system, circulating water can flow along the fixed water channel, the contact area between the circulating water and the structural member is increased, heat in the inner space of the generator can be taken away, and the operation working condition of the generator is improved.
The above are merely preferred embodiments, the present invention is not limited to the above embodiments, and those skilled in the art should understand that all the associations and changes derived without departing from the spirit of the present invention are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a turbo generator structure electromagnetic shield and cooling system which characterized in that with: the electromagnetic shielding and cooling system is composed of an electromagnetic shielding and water cooling system on a pressing plate (106) and a stator pressing plate with a fixed hole position, wherein the electromagnetic shielding and cooling system is installed on the stator pressing plate (106) of the turbonator, and the electromagnetic shielding and cooling system is connected with the whole water cooling system of the turbonator through a water cooling inlet and outlet (105).
2. The electromagnetic shielding and water cooling system of the turbonator as claimed in claim 1, wherein: electromagnetic shield and water cooling system include bottom shield (101), circular outer wall (102), and inlet and outlet (105) are imported and exported to crooked inner wall of gyration (103), top shield (104) and water-cooling, and circular outer wall expert connects on bottom shield (101), and crooked inner wall of gyration (103) are connected on bottom shield (101), and top shield installation is on circular outer wall (102), and water-cooling is imported and exported (105) and is connected on circular outer wall, and water-cooling is imported and exported (105) and is connected with outside water cooling system.
3. The electromagnetic shielding and cooling system of claim 2, wherein: the bottom shield (101) is connected with a stator pressing ring (106) of the steam turbine generator through a bolt.
4. The electromagnetic shielding and cooling system of claim 2, wherein: the material used is copper.
5. The electromagnetic shielding and cooling system of claim 2, wherein: the circular outer wall (102) is provided with two square holes.
6. The electromagnetic shielding and cooling system of claim 2, wherein: the shape of the inner wall (103) of the rotary bending is a circular notch shape.
7. The electromagnetic shielding and cooling system of claim 2, wherein: the bottom shield (101), the circular outer wall (102), the inner wall (103) which is bent in a rotary mode, the top shield (104) and the water-cooling inlet and outlet (105) are connected through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210477314.5A CN114825783A (en) | 2022-05-04 | 2022-05-04 | Electromagnetic shielding and cooling system for steam turbine generator structural part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210477314.5A CN114825783A (en) | 2022-05-04 | 2022-05-04 | Electromagnetic shielding and cooling system for steam turbine generator structural part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114825783A true CN114825783A (en) | 2022-07-29 |
Family
ID=82511101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210477314.5A Pending CN114825783A (en) | 2022-05-04 | 2022-05-04 | Electromagnetic shielding and cooling system for steam turbine generator structural part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114825783A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613921Y (en) * | 2003-03-06 | 2004-04-28 | 上海汽轮发电机有限公司 | End copper shielded double-water internal cooling turbine generator |
| US20070262658A1 (en) * | 2006-03-31 | 2007-11-15 | Oliver Drubel | Magnetic Shield in the End Area of the Stator of a Three-Phase Generator |
| CN102842992A (en) * | 2012-09-28 | 2012-12-26 | 北京交通大学 | Hollow internal cooling type electric shielding device on end part of turbine generator |
| US20130341060A1 (en) * | 2012-06-21 | 2013-12-26 | Furukawa Electric Co., Ltd. | Electromagnetic shielding tube and structure of shielded cable, method for bending electromagnetic shielding tube, method for manufacturing electromagnetic shielding tube, and method for processing terminal of shielded cable |
| CN104901480A (en) * | 2015-06-09 | 2015-09-09 | 哈尔滨理工大学 | Non-salient pole generator having encircling water-cooled type stator end portion iron core cooling system |
| CN105186790A (en) * | 2015-09-24 | 2015-12-23 | 哈尔滨理工大学 | Steam turbine generator end part axial-radial-tangential multi-directional magnetic leakage evacuation magnetic shielding device |
| CN105827055A (en) * | 2016-05-11 | 2016-08-03 | 哈尔滨理工大学 | Turbo-generator with spiral bidirectional water-cooled end portion cooling system |
| CN106130257A (en) * | 2016-08-26 | 2016-11-16 | 哈尔滨电机厂有限责任公司 | stator end leakage magnetic flux barrier structure |
| WO2017099631A1 (en) * | 2015-12-08 | 2017-06-15 | Публичное Акционерное Общество "Силовые Машины-Зтл, Лмз, Электросила, Энергомашэкспорт" (Пао "Силовые Машины") | A stator of a powerful turbogenerator |
| CN209313557U (en) * | 2019-06-13 | 2019-08-27 | 哈尔滨理工大学 | A kind of small air-cooled steam turbine generator stator brow leakage short-circuited conducting sleeve shielding decreasing loss structure |
| CN111224481A (en) * | 2019-12-06 | 2020-06-02 | 哈尔滨理工大学 | Concave-convex surrounding inner cooling type steam turbine generator end ventilation cooling system with multiple shielding |
-
2022
- 2022-05-04 CN CN202210477314.5A patent/CN114825783A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613921Y (en) * | 2003-03-06 | 2004-04-28 | 上海汽轮发电机有限公司 | End copper shielded double-water internal cooling turbine generator |
| US20070262658A1 (en) * | 2006-03-31 | 2007-11-15 | Oliver Drubel | Magnetic Shield in the End Area of the Stator of a Three-Phase Generator |
| US20130341060A1 (en) * | 2012-06-21 | 2013-12-26 | Furukawa Electric Co., Ltd. | Electromagnetic shielding tube and structure of shielded cable, method for bending electromagnetic shielding tube, method for manufacturing electromagnetic shielding tube, and method for processing terminal of shielded cable |
| CN102842992A (en) * | 2012-09-28 | 2012-12-26 | 北京交通大学 | Hollow internal cooling type electric shielding device on end part of turbine generator |
| CN104901480A (en) * | 2015-06-09 | 2015-09-09 | 哈尔滨理工大学 | Non-salient pole generator having encircling water-cooled type stator end portion iron core cooling system |
| CN105186790A (en) * | 2015-09-24 | 2015-12-23 | 哈尔滨理工大学 | Steam turbine generator end part axial-radial-tangential multi-directional magnetic leakage evacuation magnetic shielding device |
| WO2017099631A1 (en) * | 2015-12-08 | 2017-06-15 | Публичное Акционерное Общество "Силовые Машины-Зтл, Лмз, Электросила, Энергомашэкспорт" (Пао "Силовые Машины") | A stator of a powerful turbogenerator |
| CN105827055A (en) * | 2016-05-11 | 2016-08-03 | 哈尔滨理工大学 | Turbo-generator with spiral bidirectional water-cooled end portion cooling system |
| CN106130257A (en) * | 2016-08-26 | 2016-11-16 | 哈尔滨电机厂有限责任公司 | stator end leakage magnetic flux barrier structure |
| CN209313557U (en) * | 2019-06-13 | 2019-08-27 | 哈尔滨理工大学 | A kind of small air-cooled steam turbine generator stator brow leakage short-circuited conducting sleeve shielding decreasing loss structure |
| CN111224481A (en) * | 2019-12-06 | 2020-06-02 | 哈尔滨理工大学 | Concave-convex surrounding inner cooling type steam turbine generator end ventilation cooling system with multiple shielding |
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