CN205714297U - A kind of wide cut turbine system - Google Patents
A kind of wide cut turbine system Download PDFInfo
- Publication number
- CN205714297U CN205714297U CN201620629866.3U CN201620629866U CN205714297U CN 205714297 U CN205714297 U CN 205714297U CN 201620629866 U CN201620629866 U CN 201620629866U CN 205714297 U CN205714297 U CN 205714297U
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- China
- Prior art keywords
- pressure process
- steam
- pressure
- secondary high
- wide cut
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Abstract
The utility model discloses a kind of wide cut turbine system, including initial steam entrance, steam inlet connects main high-pressure process and secondary high-pressure process, main high-pressure process and secondary high-pressure process respectively and is all connected with high pressure steam drain, and secondary high-pressure process arranges two-way vapour source.During steam turbine variable load operation, main high-pressure process enters vapour does not has restriction loss all the time, so that main high-pressure process efficiency can maintain near design load all the time；In the range of load point corresponding to secondary high-pressure process minimum discharge limit value to steam turbine 100% electric load, although secondary high-pressure process enters vapour and is in partial throttling state, cause secondary high-pressure process efficiency on the low side, but it is little that secondary high-pressure process acting accounts for the share that high-pressure section always does work, in general, economy is arranged still better than tradition steam turbine.
Description
[technical field]
This utility model belongs to turbine system field, is specifically related to a kind of wide cut turbine system.
[background technology]
Existing turbine system design is many adopts using 100% load point as steam turbine economical operating condition, steam turbine
Join the mode such as vapour, compound distribution way of steam with nozzle governing, throttling and regulate steam turbine load, cause steam turbine when underrun
Heat-economy is greatly reduced.
[utility model content]
The purpose of this utility model is to overcome above-mentioned deficiency, it is provided that a kind of wide cut turbine system, it is possible to ensureing vapour
While turbine design conditions heat-economy, steam turbine underload heat-economy is greatly improved.
In order to achieve the above object, this utility model includes initial steam entrance, and steam inlet connects main high-pressure process respectively
Being all connected with high pressure steam drain with secondary high-pressure process, main high-pressure process and secondary high-pressure process, main high-pressure process arranges some backheats and takes out
Vapour.
Described main high-pressure process and secondary high-pressure process are all included into vapour governor motion.
Described secondary high-pressure process has two-way vapour source, respectively initial steam entrance and the regenerative steam of main high-pressure process.
Described main high-pressure process is provided with some grades of regenerative steam outlets, and regenerative steam outlet is connect by regenerative steam switch
Enter secondary high-pressure process entrance.
The outlet of described regenerative steam is also connected with bleeder heater.
Compared with prior art, this utility model is provided with main high-pressure process and secondary high-pressure process, and steam turbine varying duty is transported
During row, main high-pressure process enters vapour does not has restriction loss all the time, so that main high-pressure process efficiency can maintain design load all the time
Near；In the range of load point corresponding to secondary high-pressure process minimum discharge limit value to steam turbine 100% electric load, although secondary high
Baric flow journey is entered vapour and is in partial throttling state, causes secondary high-pressure process efficiency on the low side, but secondary high-pressure process acting high-pressure section is total
The share of acting is little, and in general, economy is arranged still better than tradition steam turbine.
[accompanying drawing explanation]
Fig. 1 is structural scheme of mechanism of the present utility model.
[detailed description of the invention]
Below in conjunction with the accompanying drawings this utility model is described further.
Seeing Fig. 1, a kind of wide cut turbine system, including initial steam entrance 1, initial steam entrance 1 connects main high pressure respectively
Flow process 2 and secondary high-pressure process 3, main high-pressure process 2 and secondary high-pressure process 3 are all included into vapour governor motion, and main high-pressure process 2 sets
Having some grades of regenerative steam outlets, regenerative steam outlet accesses secondary high-pressure process entrance, secondary high-pressure spray by regenerative steam valve 6
Journey 3 has two-way vapour source, respectively initial steam entrance 1 and the regenerative steam of main high-pressure process 2, regenerative steam auxiliary connection high-pressure spray
Journey enters vapour, and as the second vapour source, road of secondary high-pressure process, regenerative steam outlet is also connected with bleeder heater 7.
It is initial steam that the most main high-pressure process 2 enters vapour vapour source, and sets some grades of regenerative steams and (set according to heat regenerative system optimization
Depending on meter), design capacity is 65% (can adjust further according to design optimization) of high-pressure section overall design capacity；Secondary high-pressure spray
It is that (concrete regenerative steam position is according to pair high-pressure process pair during underload for initial steam and main high-pressure process regenerative steam that journey 3 enters vapour
Depending on entering the requirement in vapour vapour source), its design capacity is that the 35% of high-pressure section overall design capacity (can be further according to design optimization
Adjust).
Method of work of the present utility model is as follows:
Vapour source enters main high-pressure process 2 and secondary high-pressure process 3, main high-pressure process 2 and secondary high-pressure process by steam inlet 1
After 3 actings, steam is discharged from high-pressure exhaust 4, along with the reduction of load, keeps initial steam pressure, and main high-pressure process 2 runs shape
State remains unchanged, and changes to adapt to steam turbine electric load by changing the initial steam flow entering secondary high-pressure process 3, when secondary high pressure
Flow process 3 enters steam flow amount when reaching its minimum limit value, and the secondary high-pressure process 3 vapour source of switching, to main high-pressure process 2 regenerative steam, is hereafter tieed up
Holding secondary high-pressure process and enter vapour stability of flow, main high-pressure process uses sliding pressure operation mode to adapt to the change of steam turbine electric load.
When steam turbine is run in the range of the load point power below that secondary high-pressure process minimum discharge limit value is corresponding, secondary
High-pressure process only maintains basic cooling flow, the most main high-pressure process efficiency to maintain all the time near design load, steam turbine heat warp
Ji property will be significantly better than tradition steam turbine.
Claims (5)
1. a wide cut turbine system, it is characterised in that: include that initial steam entrance (1), initial steam entrance (1) connect master respectively
High-pressure process (2) and secondary high-pressure process (3), main high-pressure process (2) and secondary high-pressure process (3) are all connected with high pressure steam drain (4), main
High-pressure process arranges some regenerative steams.
A kind of wide cut turbine system the most according to claim 1, it is characterised in that: described main high-pressure process (2) and pair
High-pressure process (3) is all included into vapour governor motion.
A kind of wide cut turbine system the most according to claim 1, it is characterised in that: described secondary high-pressure process has two-way
Vapour source, respectively initial steam entrance (1) and the regenerative steam of main high-pressure process (2).
A kind of wide cut turbine system the most according to claim 1, it is characterised in that: set on described main high-pressure process (2)
Having some grades of regenerative steam outlets, regenerative steam outlet accesses secondary high-pressure process entrance by regenerative steam valve (6).
A kind of wide cut turbine system the most according to claim 1, it is characterised in that: the outlet of described regenerative steam also connects
Take back hot heater (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620629866.3U CN205714297U (en) | 2016-06-22 | 2016-06-22 | A kind of wide cut turbine system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620629866.3U CN205714297U (en) | 2016-06-22 | 2016-06-22 | A kind of wide cut turbine system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714297U true CN205714297U (en) | 2016-11-23 |
Family
ID=57316357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620629866.3U Expired - Fee Related CN205714297U (en) | 2016-06-22 | 2016-06-22 | A kind of wide cut turbine system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714297U (en) |
-
2016
- 2016-06-22 CN CN201620629866.3U patent/CN205714297U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170622 |