CN205670733U - A kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device - Google Patents
A kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device Download PDFInfo
- Publication number
- CN205670733U CN205670733U CN201620456524.6U CN201620456524U CN205670733U CN 205670733 U CN205670733 U CN 205670733U CN 201620456524 U CN201620456524 U CN 201620456524U CN 205670733 U CN205670733 U CN 205670733U
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- copper shield
- trim ring
- steam turbine
- turbine generator
- cooling device
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Abstract
The utility model discloses a kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device, by arranging inner core copper shield and outer copper shield, inner core copper shield is arranged in the cavity of outer copper shield, form reciprocating air channel between inner core copper shield and outer copper shield, vacuum chamber and multiple radial passage are set inside trim ring, anti-thermosphere is set on the cavity inner wall of vacuum chamber, significantly reduce the maximum temperature of copper shield and trim ring, strengthen the cooling effect of each component in turbo-generator end region, improve the ability of generator stable operation, reduce cost, simple in construction, facilitate implementation.
Description
Technical field
The utility model relates to a kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device, belongs to motor neck
Territory.
Background technology
In electrical engineering field, the brow leakage field of generator is a kind of common potentiality potential safety hazard, leakage field meeting
Make generator end hardware induces eddy current, cause the heating of end member.The concentration leakage that especially end occurs
Magnetic, easily causes the hot-spot of structural member, the safe operation of possibly even entail dangers to generator when serious.
Turbo-generator end component copper shield can resist the stray field in generator end region effectively, and then reduces
The magnetic of end member trim ring, end finger and end iron core is close, constantly increases however as large turbo-type generator single-machine capacity, generating
The stray field of machine end regions gradually strengthens so that the magnetic of end member is close and eddy-current loss significantly increases, its tip member
The eddy-current loss increase of copper shield is the most notable.The loss of copper shield accounts for about the 70% of end member total losses, and this causes end
The temperature of portion's component copper shield is very high, in some instances it may even be possible to can burn copper shield, and the temperature of end member trim ring is also higher, seriously
Have influence on the safe and stable operation of steam turbine generator.
Content of the invention
The purpose of this utility model is to provide a kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device, to solve
The copper shield certainly causing owing to the design of turbo-generator end zonal ventilation is unreasonable and the too high problem of trim ring temperature, improve
In turbo-generator end region, the utilization rate of cooling fluid, significantly reduces the temperature of each component in generator end region
Degree, reduces the temperature difference between each component in end, improves the ability of steam turbine generator safe and stable operation.
A kind of steam turbine generator reciprocating internal hydrogen cooling end of the present utility model ventilation cooling device, including end finger, press-fit
Trim ring on end finger, the copper shield being fixed on trim ring, the arch wind deflector, trim ring and the arch that are fixed on copper shield outer radius
Being provided with wind-guiding ditch between wind deflector, described copper shield includes inner core copper shield and outer copper shield, and described inner core copper shield is arranged
Outside in the cavity of copper shield, and its external diameter end and arch wind deflector are fixing is connected, inner core copper shield and outer copper shield inwall it
Between air channel be reciprocating air channel；Outer copper shield is fixed on trim ring, is provided with ventilation between the internal layer of outer copper shield and trim ring
Ditch, the outer layer of outer copper shield is provided with multiple air inlet duct, and described trim ring is internally provided with multiple radial passage.
The thickness of inner core copper shield is 5 mm-10 mm.The thickness of outer copper shield is 3 mm-8 mm.The width in reciprocating air channel
Degree is 3 mm-8 mm.The cross section of the air inlet duct of outer copper shield outer layer is circle, circular a diameter of 8 mm-12 mm.Air inlet duct
Along the circumferential direction arrange equably at same radial height.The thickness of the anti-thermosphere of vacuum chamber wall is 2 mm-4 mm.Trim ring
The cross section in inner radial air channel is circle, circular a diameter of 8 mm-12 mm.Along the circumferential direction uniformly arrange in radial passage, footpath
It it is 10-20 to the number in air channel.Between outer copper shield and trim ring, the width of air duct is 8 mm-12 mm.
As preferably, also including vacuum chamber, described vacuum chamber is positioned adjacent to inside the trim ring of trim ring internal diameter, vacuum chamber
It is provided with anti-thermosphere on cavity inner wall.Described vacuum chamber cross section radially is rectangle or " L " shape, described vacuum chamber cavity
It is not provided with anti-thermosphere on the inwall of trim ring internal diameter one side.When vacuum chamber cross section radially is rectangle, rectangle width
For trim ring height 1/6th.When vacuum chamber cross section radially is for " L " shape, trim ring inner diameter area can be hindered further
The flowing in trim ring inside and end finger of the heat in territory.
As preferably, offering groove bottom the internal diameter of described trim ring, the degree of depth of groove is 10 mm-15 mm.
As preferably, the outer layer upper end section of described outer copper shield is obliquely installed, the angle of outer layer upper end section and vertical direction
It is 10 °-30 °.
As preferably, the diameter of the circular cross-section in described trim ring inner radial air channel is radially gradually reduced.
Advantage of the present utility model: the 1st, the utility model reduces the maximum temperature of copper shield and trim ring, improves steamer
The ability of generator stable operation, and save the material of copper shield and trim ring, reduce cost.By arranging inner core copper screen
Cover and outer copper shield, define reciprocating air channel.Reciprocating air channel increases cooling fluid and inner core copper shield and outer copper effectively
The contact area of shielding, accelerates the fluid velocity around inner core copper shield and outer copper shield surface, and then reduces copper shield
Maximum temperature.
2nd, the vacuum chamber in trim ring hinders the heat of trim ring inner diameter zone internal to trim ring and flowing in end finger further.
Heat radiation also can be reflected by the anti-thermosphere of vacuum chamber wall effectively, and arch wind deflector reduces generator end simultaneously
The draft loss in region.
3rd, the groove offered bottom the internal diameter of trim ring, increases the ventilation-sectional area of air duct so that steam turbine generator end
In region, portion, more cooling fluid enters in air duct, cools down the flow velocity of fluid, on the other hand also in accelerating air duct
Increase the contact area of cooling fluid and trim ring, improve cooling fluid and take away the ability of trim ring heat, significantly reduce
The maximum temperature of trim ring.
4th, the outer layer upper end section of outer copper shield is obliquely installed, and increases the stream cooling down fluid in entering into reciprocating air channel
Amount, cools down the flow velocity of fluid in accelerating reciprocating air channel, improve cooling fluid and take away inner core copper shield and outer copper shield heat
The ability of amount, reduce further inner core copper shield and the maximum temperature of outer copper shield.
5th, the diameter of the circular cross-section in trim ring inner radial air channel is radially gradually reduced so that cold in radial passage
But the speed of fluid is radially gradually increased, and counteracts cooling fluid temperature (F.T.) and raises the shadow causing its cooling effect to be deteriorated
Ring, enhance cooling fluid and take away the ability of trim ring heat, reduce further the maximum temperature of trim ring.
Brief description:
Fig. 1 is axial sectional view of the present utility model；
Fig. 2 is the axial sectional view of the utility model copper shield；
Fig. 3 is the schematic front view of the utility model copper shield；
Fig. 4 is the axial sectional view of the utility model detailed description of the invention two；
Fig. 5 is the axial sectional view of the utility model detailed description of the invention three；
Fig. 6 is the axial sectional view of the utility model detailed description of the invention four；
Fig. 7 is the axial sectional view of the utility model detailed description of the invention five；
Fig. 8 is the axial sectional view of the utility model detailed description of the invention six；
In figure: 1-inner core copper shield；The outer copper shield of 2-；The reciprocating air channel of 3-；4-trim ring；5-end finger；6-arch wind deflector；
7-vacuum chamber；The anti-thermosphere of 8-；9-radial passage；10-air duct；11-air inlet duct；12-wind-guiding ditch；13-groove；14-copper shield.
In figure, arrow show in the ventilation cooling device of a kind of steam turbine generator reciprocating internal hydrogen cooling end the flow direction of cooling fluid.
Detailed description of the invention:
For making the purpose of this utility model, technical scheme and advantage of greater clarity, shown in accompanying drawing
Specific embodiment describes the utility model.It however, it should be understood that these describe simply exemplary, and is not intended to limit this reality
By novel scope.Additionally, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily mixing
Confuse concept of the present utility model.
Detailed description of the invention one: combining Fig. 1, Fig. 2 and Fig. 3 and present embodiment being described, steamer described in the utility model is sent out
Motor reciprocating internal hydrogen cooling end ventilation cooling device, including the 4th, the trim ring that the 5th, end finger is fitted on end finger 5 is fixed on trim ring 4
Copper shield the 14th, be fixed on the arch wind deflector 6 of copper shield 14 outer radius, be provided with wind-guiding between trim ring 4 and arch wind deflector 6
Ditch 12, described copper shield 14 includes inner core copper shield 1 and outer copper shield 2, and described inner core copper shield 1 is arranged on outer copper shield 2
In cavity, and its external diameter end is fixed with arch wind deflector 6 and is connected, and the air channel between inner core copper shield 1 and outer copper shield 2 inwall is
Reciprocating air channel 3；Outer copper shield 2 is fixed on trim ring 4, is provided with air duct 10 between the internal layer of outer copper shield 2 and trim ring 4,
The outer layer of outer copper shield 2 is provided with multiple air inlet duct 11.Described trim ring 4 is internally provided with multiple radial passage 9, radial passage 9
Radially run through whole trim ring the 4th, to be uniformly distributed along the circumferencial direction of trim ring 4.
The thickness of inner core copper shield 1 is 5 mm-10 mm, and the present embodiment is taken as 6 mm.The thickness of outer copper shield 2 is 3 mm-
8 mm, the present embodiment is taken as 4 mm.The width in reciprocating air channel 3 is 3 mm-8 mm, and the present embodiment is taken as 4 mm.Outer copper shield 2
The cross section of the air inlet duct 11 of outer layer is circle, and circular a diameter of 8 mm-12 mm, the present embodiment is taken as 10 mm.Air inlet duct 11
It is distributed uniformly and circumferentially at same radial height.
Radial passage 9 cross section in axial direction is circle, and circular a diameter of 8 mm-12 mm, the present embodiment is taken as 10
mm.Radial passage 9 is uniformly distributed along the circumferencial direction of trim ring 4, and the number of radial passage 9 is 10-20, and the present embodiment is taken as
15.Between outer copper shield 2 and trim ring 4, the width of air duct 10 is 8 mm-12 mm, and the present embodiment is taken as 10 mm.
Concrete cooling fluid is changed in copper shield by the original surface flow only in solid copper shielding and solid trim ring
Internal the 3rd, trim ring 4 inner radial air channel, reciprocating air channel the 9th, air duct 10 and copper shield 14 and between outer copper shield 2 and trim ring 4
Trim ring 4 surface flow.At effect lower end region one tunnel of steam turbine generator tube-axial fan cooling fluid by outer copper shield 2
The air inlet duct 11 of outer layer enters into reciprocating air channel 3, increases contacting of cooling fluid and inner core copper shield 1 and outer copper shield 2
Area, accelerates the speed cooling down fluid around inner core copper shield 1 and outer copper shield 2 surface, it will be apparent that reduce copper shield 14
Maximum temperature, from reciprocating air channel 3 flow out cooling fluid enter into wind-guiding ditch 12.Another road cooling fluid enters directly into
After air duct 10, part cooling fluid enters into radial passage 9, increases the contact area of cooling fluid and trim ring 4, improves
The surface coefficient of heat transfer of trim ring 4, reduces the maximum temperature of trim ring 4, and the cooling fluid flowing out from radial passage 9 is directly entered
To wind-guiding ditch 12；Another part cooling fluid enters into wind-guiding ditch 12 by air duct 10, and this part cooling fluid can be effective
Take away the heat of outer copper shield 2 and trim ring 4, reduce further the maximum temperature of outer copper shield 2 and trim ring 4.Arch wind-guiding
The shape of plate 6 presents arch, reduces the draft loss in generator end region.
The temperature of End of Turbogenerator region copper shield and trim ring is often very high, in the utility model is by arranging
Core copper shield 1 and outer copper shield 2, define reciprocating air channel 3.Reciprocating air channel 3 can effectively increase cooling fluid with interior
Core copper shield 1 and the contact area of outer copper shield 2, accelerate the fluid velocity around inner core copper shield 1 and outer copper shield 2 surface,
And then reduce the maximum temperature of copper shield 14.Between outer copper shield 2 and trim ring 4, the cooling liquid in air duct 10 serves increasing
Big outer copper shield 2 and the effect of trim ring 4 surface coefficient of heat transfer, improve and cool down fluid and take away outer copper shield 2 and trim ring 4 heat
Ability, further reduces the maximum temperature of outer copper shield 2 and trim ring 4.Cooling fluid in radial passage 9 within trim ring 4
Also play the effect reducing trim ring temperature.The utility model significantly reduces copper shield 14 and the maximum temperature of trim ring 4, carries
The high ability of steam turbine generator stable operation, and save copper shield 14 and the material of trim ring 4, reduce cost.
Detailed description of the invention two: combine Fig. 2, Fig. 3, Fig. 4 and present embodiment, present embodiment and embodiment one are described
Difference is: also include vacuum chamber 7, and the trim ring 4 that described vacuum chamber 7 is positioned adjacent to trim ring internal diameter is internal, vacuum chamber 7
It is provided with anti-thermosphere 8 on cavity inner wall.Described vacuum chamber 7 cavity is not provided with anti-thermosphere 8 on the inwall of trim ring internal diameter one side.
Vacuum chamber 7 in trim ring 4 can greatly hinder the heat of trim ring 4 inner diameter zone internal to trim ring 4 and flowing in end finger 5.
The aluminium foil layer of vacuum chamber 7 wall constitutes anti-thermosphere 8, and heat radiation can be reflected by anti-thermosphere 8 effectively, reduces from pressure
Enclose 4 inner diameter zone and be radiated the heat of trim ring 4 inside and end finger 5, significantly reduce trim ring 4 and the maximum temperature of end finger 5.
Vacuum chamber 7 cross section radially is rectangle, and rectangle width is 1/6th of trim ring 4 height.Vacuum chamber 7 wall
The thickness of the anti-thermosphere 8 in face is 2 mm-4 mm, and the present embodiment is taken as 2 mm.Other detailed description of the invention and embodiment one phase
Same, specifically repeat no more.
Detailed description of the invention three: combine Fig. 2, Fig. 3, Fig. 5 and present embodiment, present embodiment and embodiment two are described
Difference is that vacuum chamber 7 cross section radially is " L " shape, and anti-thermosphere 8 is close to the wall of " L " shape vacuum chamber 7.Cut
The vacuum chamber 7 that face is " L " shape is relatively big with the contact area of trim ring 4, and the heat of trim ring 4 inner diameter zone can be hindered further to pressure
Flowing in circle 4 inside and end finger 5.Other detailed description of the invention are identical with embodiment two, specifically repeat no more.
Detailed description of the invention four: combine Fig. 2, Fig. 3, Fig. 6 and present embodiment, present embodiment and embodiment two are described
Difference is: offer groove 13 bottom the internal diameter of trim ring 4, and the degree of depth of groove 13 is 10 mm-15 mm, and the present embodiment takes
It is 12 mm.On the one hand groove increases the ventilation-sectional area of air duct 10 between outer copper shield 2 and trim ring 4 so that turbine generator
In machine end regions, more cooling fluid enters in air duct 10, accelerates air duct 10 between outer copper shield 2 and trim ring 4
The speed of interior cooling fluid, on the other hand also increases the contact area of cooling fluid and trim ring 4, improves cooling fluid and takes away
The ability of trim ring 4 heat, significantly reduces the maximum temperature of trim ring 4.Other detailed description of the invention are identical with embodiment two,
Specifically repeat no more.
Detailed description of the invention five: combine Fig. 2, Fig. 3, Fig. 7 and present embodiment, present embodiment and embodiment two are described
Difference is: the outer layer upper end section of described outer copper shield 2 is obliquely installed, and outer layer upper end section with the angle of vertical direction is
10 °-30 °, the slanted angle of the present embodiment is taken as 20 °.The outer layer upper end section of outer copper shield 2 is obliquely installed, and increases and enters into
The flow of cooling fluid in reciprocating air channel 3, cools down the speed of fluid, improves cooling fluid in accelerating reciprocating air channel 3
Take away inner core copper shield 1 and the ability of outer copper shield 2 heat, reduce further the highest of inner core copper shield 1 and outer copper shield 2
Temperature.Other detailed description of the invention are identical with embodiment two, specifically repeat no more.
Detailed description of the invention six: combine Fig. 2, Fig. 3, Fig. 8 and present embodiment, present embodiment and embodiment two are described
Difference is: the area of the axial cross section of described radial passage 9 is radially gradually reduced, so so that radially
In air channel 9, the speed of cooling fluid is radially gradually increased, and counteracts cooling fluid temperature (F.T.) rising and causes its cooling effect
The impact being deteriorated, enhances cooling fluid and takes away the ability of trim ring 4 heat, reduce further the maximum temperature of trim ring 4.Other
Detailed description of the invention is identical with embodiment two, specifically repeats no more.
Of the present utility model general principle and principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Principle of the present utility model is simply described, on the premise of without departing from the utility model spirit and scope, the utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed the utility model.The utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (9)
1. a steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device, including end finger, the trim ring being fitted on end finger,
The copper shield being fixed on trim ring, the arch wind deflector being fixed on copper shield outer radius, arranged between trim ring and arch wind deflector
There is wind-guiding ditch, it is characterised in that: described copper shield includes inner core copper shield and outer copper shield, outside described inner core copper shield is arranged on
In the cavity of copper shield, and its external diameter end is fixed with arch wind deflector and is connected, between inner core copper shield and outer copper shield inwall
Air channel is reciprocating air channel；Outer copper shield is fixed on trim ring, is provided with air duct, outward between the internal layer of outer copper shield and trim ring
The outer layer of copper shield is provided with multiple air inlet duct, and described trim ring is internally provided with multiple radial passage.
2. steam turbine generator according to claim 1 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: also
Including vacuum chamber, described vacuum chamber is positioned adjacent to inside the trim ring of trim ring internal diameter, the cavity inner wall of vacuum chamber is provided with anti-
Thermosphere.
3. steam turbine generator according to claim 2 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: institute
Stating vacuum chamber cross section radially is rectangle or " L " shape, and described vacuum chamber cavity is on the inwall of trim ring internal diameter one side
It is not provided with anti-thermosphere.
4. steam turbine generator according to claim 3 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: institute
Stating and offering groove bottom the internal diameter of trim ring, the degree of depth of groove is 10 mm-15 mm.
5. steam turbine generator according to claim 3 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: institute
The outer layer upper end section stating outer copper shield is obliquely installed, and outer layer upper end section is 10 °-30 ° with the angle of vertical direction.
6. steam turbine generator according to claim 3 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: institute
The area of the axial cross section stating radial passage is radially gradually reduced.
7. steam turbine generator according to claim 6 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: institute
State radial passage cross section in axial direction for circle.
8. the reciprocating internal hydrogen cooling of the steam turbine generator according to claim 1 or 6 end ventilation cooling device, its feature exists
In: whole trim ring is radially run through in described radial passage, the circumferencial direction along trim ring is uniformly distributed.
9. steam turbine generator according to claim 1 reciprocating internal hydrogen cooling end ventilation cooling device, it is characterised in that: institute
State air inlet duct to be distributed uniformly and circumferentially at same radial height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456524.6U CN205670733U (en) | 2016-05-19 | 2016-05-19 | A kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456524.6U CN205670733U (en) | 2016-05-19 | 2016-05-19 | A kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205670733U true CN205670733U (en) | 2016-11-02 |
Family
ID=57194030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620456524.6U Withdrawn - After Issue CN205670733U (en) | 2016-05-19 | 2016-05-19 | A kind of steam turbine generator reciprocating internal hydrogen cooling end ventilation cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205670733U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871122A (en) * | 2016-05-19 | 2016-08-17 | 哈尔滨理工大学 | Reciprocating hydrogen inner-cooling end ventilating and cooling device of steam-turbine generator |
| CN112564339A (en) * | 2020-11-30 | 2021-03-26 | 哈尔滨理工大学 | Loss-reducing ventilation device for end part of high-capacity synchronous phase modifier |
-
2016
- 2016-05-19 CN CN201620456524.6U patent/CN205670733U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871122A (en) * | 2016-05-19 | 2016-08-17 | 哈尔滨理工大学 | Reciprocating hydrogen inner-cooling end ventilating and cooling device of steam-turbine generator |
| CN105871122B (en) * | 2016-05-19 | 2018-02-02 | 哈尔滨理工大学 | A kind of reciprocating internal hydrogen cooling end ventilation cooling device of steam turbine generator |
| CN112564339A (en) * | 2020-11-30 | 2021-03-26 | 哈尔滨理工大学 | Loss-reducing ventilation device for end part of high-capacity synchronous phase modifier |
| CN112564339B (en) * | 2020-11-30 | 2021-07-02 | 哈尔滨理工大学 | Loss-reducing ventilation device for end part of high-capacity synchronous phase modifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161102 Effective date of abandoning: 20180202 |