CN204357506U - Steam-turbine power plant - Google Patents
Steam-turbine power plant Download PDFInfo
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- CN204357506U CN204357506U CN201420732099.XU CN201420732099U CN204357506U CN 204357506 U CN204357506 U CN 204357506U CN 201420732099 U CN201420732099 U CN 201420732099U CN 204357506 U CN204357506 U CN 204357506U
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Abstract
The utility model relates to a kind of steam-turbine power plant, possess: the steam generator producing steam, the main steam system of supply steam, from the high pressure turbine of main steam system supply steam, supply steam from main steam system and there is the moisture separating heater of mist separator and heater, from the low-pressure turbine of main steam system supply steam, the condensation water system that the condenser supplying steam from the main steam system be connected with the outlet of low-pressure turbine and the condensed water produced by condenser are supplied to steam generator, moisture separating heater has the heater of more than 3, the heating source of heater is connect from the outlet of steam generator and supply the extraction steam that the part of the steam in the main steam system of steam and more than 2 bleed positions different from the vapor (steam) temperature high pressure turbine extract to high pressure turbine respectively.Accordingly, the steam flow extracted from high pressure turbine can be reduced as far as possible, improve the efficiency of steam-turbine power plant entirety.
Description
Technical field
The utility model relates to a kind of steam-turbine power plant, particularly relates to a kind of steam-turbine power plant be applied in nuclear power station or heat power station.
Background technique
In steam-turbine power plant, high pressure turbine is connected with generator with the axle of low-pressure turbine, as shown in Figure 1, to high pressure turbine and low-pressure turbine supply steam, makes corresponding turbo machine rotate and drive generator to generate electricity.As shown in Figure 1, this kind of steam-turbine power plant is circulated by following entirety and forms: steam generator 1a → high pressure turbine 2a → moisture separating heater 3a → low-pressure turbine 6a → condenser 7a
low pressure feed-water heater 8a
degasser 12a
high service heater 9a (10a, 11a)
steam generator 1a (→ for steam (main steam system),
for water (condensation water system)).
In this steam-turbine power plant, be provided with this device of moisture separating heater, make the humid steam be discharged after high pressure turbine acting become superheated vapor by moisture separating heater, by this superheated vapor to low-pressure turbine supply, thus improve the thermal efficiency of power generating equipment.In order to be made the humid steam of being discharged by high pressure turbine overheated by moisture separating heater, extract the steam that steam generator produces, as the heater supplies of heating source to moisture separating heater in the upstream of high pressure turbine from main steam system.As a result, the steam flow for making high pressure turbine and low-pressure turbine rotate reduces.But, owing to being made the steam superheating eliminating moisture at moisture separating heater by heater, and this is overheated after steam to low-pressure turbine supply, the acting amount of the steam therefore in low-pressure turbine increases, and the thermal efficiency of power generating equipment improves.Moisture separating heater 3a is made up of mist separator 4a and primary heater 5a-1, this two-stage of secondary heater 5a-2 (two) heater, is arranged at the midway (between main steam system 21a-2 and main steam system 21a-3) of the main steam system 21a (21a-1 ~ 21a-4) from high pressure turbine 2a to low-pressure turbine 6a delivering vapor.The steam of discharging is exported due to containing a large amount of moisture from high pressure turbine 2a, therefore supply to mist separator 4a via main steam system 21a-2, after removing moisture, heated by primary heater 5a-1, secondary heater 5a-2 further, be then sent to low-pressure turbine 6a.Thereby, it is possible to improve the steam acting amount at low-pressure turbine 6a place, improve the generating efficiency of power generating equipment entirety.Then, described steam is supplied to condenser 7a from the outlet of low-pressure turbine 6a via main steam system 21a-4, is sent to 4 low pressure feed-water heater 8a at this water reclaimed and heats via condensation water system 22a-1.Then, the described water after heating is heated by high service heater 9a (10a, 11a) through degasser 12a again, returns steam generator 1a via condensation water system 22a-2.Further, by the steam that 4 positions from the higher level of low-pressure turbine 6a to subordinate are extracted, by temperature sequence, be supplied to above-mentioned low pressure feed-water heater 8a via low-pressure turbine extract system 30a and heated.
In steam moisture separating heater 3a, steam sequentially passes through with mist separator 4a → primary heater 5a-1 → secondary heater 5a-2's, as the heating source of primary heater 5a-1, the steam that the high pressure turbine higher level 23a-2 between the entrance and exit from high pressure turbine 2a extracts is supplied to primary heater 5a-1 via the first system 24a-1.As the heating source of secondary heater 5a-2, bleed from the upstream side of high pressure turbine 2a, extract steam from main steam system 21a-1 and supply to secondary heater 5a-2 via second system 24a-2.
To primary heater 5a-1 supply extraction steam heating (only heat exchange) described main steam after, its sluicing is supplied to the first high service heater 10a via primary heater drainage system 26a-1, on the other hand, after the main steam of the main steam of supplying to secondary heater 5a-2 via second system 24a-2 in heating (only heat exchange) secondary heater 5a-2, its sluicing is supplied to the second high service heater (final feed-water heater) 11a via secondary heater drainage system 26a-2.It should be noted that, the sluicing of mist separator 4a is supplied to degasser 12a via mist separator drainage system 25a.As the heating source of above-mentioned degasser 12a, the first high service heater 10a and the second high service heater 11a, the extraction steam extracted from the outlet of high pressure turbine 2a, intermediate 23a-1 and higher level 23a-2 by temperature sequence supply heats.
In this kind of steam-turbine power plant, usually the vapor (steam) temperature at Low-pressure turbine inlet place is set as 260 DEG C ~ 270 DEG C.But the vapor (steam) temperature flowing into moisture separating heater is about 180 DEG C, needs this steam of about 180 DEG C to be increased to about 260 DEG C ~ 270 DEG C in the outlet port of moisture separating heater 3a.
For this reason, need the heating source carrying about 230 DEG C to primary heater 5a-1, carry the heating source of 260 DEG C ~ 270 DEG C to secondary heater 5a-2.So, as heating source, supply the steam extracted from the bleed position 23a-2 of high pressure turbine higher level to primary heater 5a-1.On the other hand, as heating source, supply the steam extracted from the main steam system 21a-1 of the upstream side of high-pressure turbine inlet to secondary heater 5a-2.
Here, extract and the steam of supply and extracting and the steam supplied from the main steam system 21a-1 of the upstream side of high-pressure turbine inlet from the bleed position 23a-2 of high pressure turbine higher level, if not to first, second heater 5a-1,5a-2 supply, the steam that script is used to be sent to high pressure turbine and high pressure turbine is rotated.And then, extract (being provided to heater) from above-mentioned two positions if steam flow become many, then the acting amount (generated energy) at high pressure turbine place can corresponding minimizing, and whole efficiency reduces.Therefore, it is desirable to reduce the steam flow extracted from these two positions as far as possible, thus reduce the loss at high pressure turbine place, improve the efficiency of steam-turbine power plant entirety.
Model utility content
The utility model is made in view of the above problems, its object is to provide a kind of and reduces the steam flow extracted from turbo machine as far as possible, improve the steam-turbine power plant of the efficiency of steam-turbine power plant entirety.
To achieve these goals, the utility model makes the heater of the moisture separating heater of two-stage in the past be set to more than three grades, as heating source, adds the steam using and extract from the two or more position of high pressure turbine, reduce the temperature difference between heater at different levels, carry out high efficiency heating.
Specifically, the utility model provides a kind of steam-turbine power plant, and it possesses: steam generator 1b, 1c, and it produces steam, main steam system 21b, 21c, it supplies the steam that described steam generator produces, high pressure turbine 2b, 2c, it supplies steam from described main steam system 21b-1, the 21c-1 be connected with the outlet of described steam generator, moisture separating heater 3b, 3c, it supplies steam from described main steam system 21b-2, the 21c-2 be connected with the outlet of described high pressure turbine, and has mist separator 4b, 4c and heater 5b, 5c, low-pressure turbine 6b, 6c, it supplies steam from described main steam system 21b-3, the 21c-3 be connected with the outlet of described moisture separating heater, condenser 7b, 7c, it supplies steam from described main steam system 21b-4, the 21c-4 be connected with the outlet of described low-pressure turbine, and condensation water system 22b, 22c, it is by described condenser 7b, the condensed water that 7c produces is to described steam generator 1b, 1c supplies, wherein, described moisture separating heater 3b, 3c has the heater 5b-1 of more than 3, 5b-2, 5b-3, 5c-1, 5c-2, 5c-3, 5c-4, the heating source of the heater of described more than 3 is be connected with the outlet of described steam generator and supply the described main steam system 21b-1 of steam to described high pressure turbine respectively, a part for steam in 21c-1, with from different more than 2 the bleed position 23b-1 of the vapor (steam) temperature on described high pressure turbine, 23b-2, 23c-1, 23c-2, the extraction steam that 23c-3 extracts.
In above-mentioned steam-turbine power plant, preferably, described heated chamber is standby: the primary heater 5b-1 being positioned at the downstream side of described mist separator 4b, be positioned at the secondary heater 5b-2 in the downstream side of described primary heater, and be positioned at the 3rd heater 5b-3 in downstream side of described secondary heater, steam is supplied to described primary heater 5b-1 from the first system 24b-1 be connected with the first bleed position 23b-1 of described high pressure turbine, steam is supplied to described secondary heater 5b-2 from the second system 24b-2 be connected with the second bleed position 23b-2 of described high pressure turbine, the vapor (steam) temperature of described second bleed position 23b-2 is higher than the vapor (steam) temperature of described first bleed position, steam is supplied to described 3rd heater 5b-3 from the 3rd system 24b-3, described 3rd system 24b-3 is with the outlet being connected to described steam generator and be connected to the described main steam system 21b-1 that steam supplied by described high pressure turbine.
In above-mentioned steam-turbine power plant, preferably, possess: primary heater drainage system 26b-1, it is to supplying described steam from described the first system 24b-1 to described primary heater 5b-1 and steam after heat exchange or water are carried; Flash drum 13b, it is connected with described primary heater drainage system 26b-1; Flash system 27b, it is connected with the described main steam system 21b-2 in the downstream side of the upstream side and described high pressure turbine that are positioned at described mist separator 4b described flash drum 13b, and the steam having carried out carbonated drink separation at described flash drum 13b is supplied from described flash system 27b to described mist separator 4b.
In above-mentioned steam-turbine power plant, preferably, possess: the first high service heater 10b, it is connected in described condensation water system; Second high service heater 11b, it is connected in described condensation water system, and is positioned at the downstream side of described first high service heater 10b; First high service heating system 32b, its by the steam that extracts from described high pressure turbine to described first high service heater supplies; And the second high service heating system 33b, its by the steam that extracts from described high pressure turbine to described second high service heater supplies, and, described first high service heating system 32b and described the first system 24b-1 shares a part for bleed position from described high pressure turbine and extract system, and described second high service heating system 33b and described second system 24b-2 shares a part for bleed position from described high pressure turbine and extract system.
In above-mentioned steam-turbine power plant, preferably,
Described heater 5c possesses: the primary heater 5c-1 being positioned at the downstream side of described mist separator 4c, be positioned at described primary heater downstream side secondary heater 5c-2, be positioned at the 3rd heater 5c-3 in the downstream side of described secondary heater and be positioned at the 4th heater 5c-4 in downstream side of described 3rd heater
Steam is supplied to described primary heater 5c-1 from the first system 24c-1 be connected with the first bleed position 23c-1 described high pressure turbine,
Supply steam from the second system 24c-2 be connected with the second bleed position 23c-2 described high pressure turbine to described secondary heater 5c-2, the vapor (steam) temperature of described second bleed position 23c-2 higher than the vapor (steam) temperature of described first bleed position,
Supply steam from the 3rd system 24c-3 be connected with the 3rd bleed position 23c-3 described high pressure turbine to described 3rd heater 5c-3, the vapor (steam) temperature of described 3rd bleed position 23c-3 higher than the vapor (steam) temperature of described second bleed position,
Supply steam from Quaternary system system 24c-4 to described 4th heater 5c-4, described Quaternary system system 24c-4 is connected with the described main steam system of the entrance being connected to described high pressure turbine.
In addition, the utility model also provides a kind of steam-turbine power plant, and it possesses: steam generator 1b), it produces steam; Main steam system 21b, it supplies the steam that described steam generator produces; High pressure turbine 2b, it supplies steam from the described main steam system 21b-1 be connected with the outlet of described steam generator; Moisture separating heater 3b, it supplies steam from the described main steam system 21b-2 be connected with the outlet of described high pressure turbine, and has mist separator 4b and heater 5b; Low-pressure turbine 6b, it supplies steam from the described main steam system 21b-3 be connected with the outlet of described moisture separating heater; Condenser 7b, it is connected with described main steam system 21b-4 in the downstream side of described low-pressure turbine; And condensation water system 22b, its condensed water produced by described condenser 7b is supplied to described steam generator 1b, wherein, described heater 5b possesses: the primary heater 5b-1 being positioned at the downstream side of described mist separator, be positioned at described primary heater downstream side secondary heater 5b-2 and be positioned at the 3rd heater 5b-3 in downstream side of described secondary heater, described steam-turbine power plant also possesses: primary heater drainage system 26b-1, the steam that its conveying is supplied to described primary heater 5b-1 and carried out after heat exchange or water; Flash drum 13b, it is connected with described primary heater drainage system 26b-1; Flash system 27b, it is connected with the described main steam system 21b-2 in the downstream side of the upstream side and described high pressure turbine that are positioned at described mist separator described flash drum 13b, and the steam having carried out carbonated drink separation at described flash drum 13b is supplied from described flash system 27b to described mist separator 4b.
In above-mentioned steam-turbine power plant, preferably, possess: flash drum drainage system 28b, it is connected with described flash drum 13b in the downstream side of described flash drum 13b; Mist separator drainage system 25b, it reclaims the sluicing of described mist separator 4b; And sluicing tank 14b, it is connected with described mist separator drainage system, and described flash drum drainage system 28b is also connected with described sluicing tank 14b.
In above-mentioned steam-turbine power plant, preferably, possess: feed-water heater 8b, 9b, it is connected in the described condensation water system in the downstream side of described condenser; And degasser 12b, it is connected in the described condensation water system in the downstream side of described condenser, and, be connected to described degasser 12b with described sluicing tank connected drainage system 29b in the downstream side of described sluicing tank 14b.
In above-mentioned steam-turbine power plant, preferably, described flash drum 13b is a dual-purpose tank 14 ' b of the function with flash drum and sluicing tank, described dual-purpose tank 14 ' b, is connected with the mist separator drainage system 25b of the sluicing of reclaiming described mist separator 4b at the upstream side of described dual-purpose tank.
In addition, the utility model provides a kind of steam-turbine power plant, and it possesses: steam generator 1b, 1c, and it produces steam; Main steam system 21b, 21c, it supplies the steam that described steam generator produces; High pressure turbine 2b, 2c, it connects from described main steam system 21b-1, the 21c-1 be connected with the outlet of described steam generator; Moisture separating heater 3b, 3c, it is connected with described main steam system 21b-2,21c-2 in the downstream side of described high pressure turbine, and has mist separator 4b, 4c and heater 5b-1,5b-2,5b-3,5c-1,5c-2,5c-3,5c-4; Low-pressure turbine 6b, 6c, it is connected with described main steam system 21b-3,21c-3 in the downstream side of described moisture separating heater; Condenser 7b, 7c, it is connected with described main steam system 21b-4,21c-4 in the downstream side of described low-pressure turbine; Condensation water system 22b, 22c, its condensed water described condenser 7b, 7c produced is supplied to described steam generator 1b, 1c, the feature of described steam-turbine power plant is also possess: mist separator drainage system 25b, 25c, and it reclaims the sluicing of described mist separator; Sluicing tank 14b, 14c-1, it is connected with described mist separator drainage system; Heater drainage system 26b-1,26b-2,26b-3,26c-1,26c-2,26c-3,26c-4, heater supplies steam described in its subtend and steam after heat exchange or water are carried; Flash drum 13b, 13c, it is connected with described heater drainage system; Flash drum drainage system 28b, 28c, it is connected with described flash drum in the downstream side of described flash drum, is also connected with described sluicing tank; Flash system 27b, 27c, it is connected with described main steam system 21b-2, the 21c-2 in the downstream side of the upstream side and described high pressure turbine that are positioned at described mist separator 4b, 4c described flash drum 13b, 13c.
In above-mentioned steam-turbine power plant, preferably, described steam-turbine power plant possesses: be connected to feed-water heater 8b, 9b, 8c, the 9c on described condensation water system 22b, the 22c in the downstream side of described condenser; And be connected to described condenser downstream side described condensation water system on degasser 12b, 12c, be connected to described degasser 12b, 12c with described sluicing tank connected drainage system 29b, 29c-1 in the downstream side of described sluicing tank 14b, 14c.
Model utility effect
Owing to having the heater of more than 3 grades, therefore compared with the situation of double-bank heater, can the temperature of the extraction steam being sent to primary heater be set lower.Thereby, it is possible to by the bleed position being sent to the steam of primary heater at high pressure turbine place, be set as the position compared with position in the past with power at low pressure.That is, because the cyclic steam (main steam) at heater place at different levels diminishes compared with the situation of double-bank heater with the temperature difference of heating steam (heating source), therefore, it is possible to more efficiently heat.And then compared with situation in the past, the driving of high pressure turbine can use more main steams.Thus, the efficiency of steam-turbine power plant improves.
Accompanying drawing explanation
Fig. 1 is steam-turbine power plant system diagram in the past, uses the situation of double-bank heater shown in figure.
Fig. 2 is the steam-turbine power plant system diagram of embodiment 1 of the present utility model, uses the situation of three grades of heaters shown in figure.
Fig. 3 is the steam-turbine power plant system diagram of the 1st variation of embodiment 1 of the present utility model, uses the situation of three grades of heaters and flash drum shown in figure.
Fig. 4 is the steam-turbine power plant system diagram of the 2nd variation of embodiment 1 of the present utility model, has both the situation of the dual-purpose tank of flash drum and sluicing tank function shown in figure.
Fig. 5 is the steam-turbine power plant system diagram of the 3rd variation of embodiment 1 of the present utility model, the situation that the heat source of the heat source of high service shown in figure and moisture separating heater does not share and arranges respectively.
Fig. 6 is the steam-turbine power plant system diagram of embodiment 2 of the present utility model, uses the situation of level Four heater and flash drum shown in figure.
Symbol description:
1a, 1b, 1c steam generator
2a, 2b, 2c high pressure turbine
3a, 3b, 3c moisture separating heater
4a, 4b, 4c mist separator
5a, 5b, 5c heater
5a-1,5b-1,5c-1 primary heater
5a-2,5b-2,5c-2 secondary heater
5b-3,5c-3 the 3rd heater
5c-4 the 4th heater
6a, 6b, 6c low-pressure turbine
7a, 7b, 7c condenser
8a, 8b, 8c low pressure feed-water heater
9a, 9b, 9c high service heater
10a, 10b, 10c first high service heater
11a, 11b, 11c second high service heater (final feed-water heater)
12a, 12b, 12c degasser
13b, 13c flash drum
14b, 14c-1,14c-2 sluicing tank
14 ' b dual-purpose tank (flash distillation hold concurrently sluicing tank)
21a, 21b, 21c main steam system
22a, 22b, 22c condensation water system
Embodiment
Below, with reference to accompanying drawing, Each part of the present utility model and function are described in detail.Wherein, corresponding with conventional art part omits repeat specification.
In the utility model, preferably adopt following mode of execution.
First mode of execution of the present utility model is the structure of use 3 heaters, utilize two positions bleed and the part of main steam heats these 3 heaters respectively.
As shown in Figure 2, the standby primary heater 5b-1 being positioned at the downstream side of mist separator 4b of described heated chamber, be positioned at the secondary heater 5b-2 in the downstream side of described primary heater, and be positioned at the 3rd heater 5b-3 in downstream side of described secondary heater, steam is supplied to described primary heater 5b-1 from the first system 24b-1 be connected with the first bleed position described high pressure turbine, steam is supplied to described secondary heater 5b-2 from the second system 24b-2 be connected with the second bleed position described high pressure turbine, the vapor (steam) temperature of described second bleed position is higher than the vapor (steam) temperature of described first bleed position, steam is supplied to described 3rd heater 5b-3 from the 3rd system 24b-3 be connected with main steam system 21b-1, described 3rd system 24b-3 is connected with the described main steam system 21b-1 of the entrance being connected to described high pressure turbine, realize suitable temperature setting thus.
Second mode of execution of the present utility model, for use 3 with the structure of upper heater, carries out flash distillation to the sluicing of primary heater, can it can be used as the steam to the supply of moisture separating heater and utilize, and then can reduce the humidity of high-pressure turbine exhaust.
As shown in Figure 3, preferably possess: primary heater drainage system 26b-1, it is to supplying described steam from described the first system 24b-1 to described primary heater 5b-1 and steam after heat exchange or water are carried; Flash drum 13b, it is connected with described primary heater drainage system 26b-1; Flash system 27b, its to described flash drum 13b with the upstream side being positioned at described mist separator 4b and the described main steam system 21b-2 in the downstream side of described high pressure turbine 2b be connected, described flash drum 13b carried out carbonated drink be separated steam supply from described flash system 27b to described mist separator 4b.
With in the structure of upper heater, bleed position is not particularly limited in the use 3 of the second mode of execution of the present utility model, also can carries out flash distillation to the sluicing of primary heater thus utilize flash steam.
In the preferred version of Fig. 3, steam-turbine power plant possesses: steam generator 1b, and it produces steam; Main steam system 21b, it supplies the steam that described steam generator produces; High pressure turbine 2b, it connects described main steam system 21b-1 in the downstream side of described steam generator; Moisture separating heater 3b, it is connected with described main steam system 21b-2 in the downstream side of described high pressure turbine, and has mist separator 4b and heater 5b; Low-pressure turbine 6b, it is connected with described main steam system 21b-3 in the downstream side of described moisture separating heater; Condenser 7b, it is connected with described main steam system 21b-4 in the downstream side of described low-pressure turbine; And condensation water system 22b, its condensed water produced by described condenser 7b is supplied to described steam generator 1b, wherein said heater 5b possesses: the primary heater 5b-1 being positioned at the downstream side of described mist separator 4b, be positioned at described primary heater downstream side secondary heater 5b-2 and be positioned at the 3rd heater 5b-3 in downstream side of described secondary heater, described steam-turbine power plant also possesses: primary heater drainage system 26b-1, and its conveying is supplied and the steam carried out after heat exchange or water to described primary heater 5b-1; Flash drum 13b, it is arranged at described primary heater drainage system 26b-1; Flash system 27b, it is connected with the described main steam system 21b-2 in the downstream side of the upstream side and described high pressure turbine that are positioned at described mist separator 4b described flash drum 13b, and the steam having carried out carbonated drink separation at described flash drum 13b is supplied from described flash system 27b to described mist separator 4b.
In addition, in the second mode of execution of the present utility model, from the viewpoint of simplified apparatus, preferably the sluicing of mist separator and the sluicing of flash drum are connected to common sluicing tank, and integrate drainage system.
As shown in Figure 3, also can possess: flash drum drainage system 28b, it is connected with described flash drum 13b in the downstream side of described flash drum 13b; Mist separator drainage system 25b, it reclaims the sluicing of described mist separator 4b; And sluicing tank 14b, it is arranged at described mist separator drainage system, and described flash drum drainage system 28b is connected with described sluicing tank 14b.In the structure shown here, preferably the drainage system 29b integrated is introduced degasser 12b,
And preferably possess: feed-water heater 8b, it is connected with the described condensation water system 22b in the downstream side of described condenser; And degasser 12b, it is connected in the described condensation water system in the downstream side of described condenser, wherein, is connected with described sluicing tank connected drainage system 29b in the downstream side of described sluicing tank 14b to described degasser 12b.
In the 3rd mode of execution of the present utility model, it doesn't matter with the progression of heater, utilize the extraction steam heating moisture separating heater extracted from high pressure turbine 2b, preferably extraction steam is also used for the heating of feed-water heater simultaneously, is more preferably and shares the extract system of feed-water heater and the extract system to moisture separating heater.Therefore, as shown in Figure 4, in a preferred approach, possess: the first high service heater 10b, it is connected with described condensation water system; Second high service heater 11b, it is connected with described condensation water system, and is positioned at the downstream side of described first high service heater 10b; First high service heating system 32b, the steam extracted from described high pressure turbine is supplied to described first high service heater 10b by it; And the second high service heating system 33b, the steam extracted from described high pressure turbine is supplied to described second high service heater 11b by it, wherein, described first high service heating system 32b and described the first system 24b-1 shares the bleed position of described high pressure turbine and a part for extract system, and described second high service heating system 33b and described second system 24b-2 shares the bleed position of described high pressure turbine and a part for extract system.
In the 4th mode of execution of the present utility model, it doesn't matter with heater progression, has sluicing tank and flash drum, and the drainage system integrated is introduced degasser.
In the scheme of Fig. 5, steam-turbine power plant possesses: steam generator 1b, and it produces steam; Main steam system 21b, the steam that its supply steam generator produces; High pressure turbine 2b, it is connected with described main steam system 21b-1 in the downstream side of described steam generator; Moisture separating heater 3b, it is connected with described main steam system 21b-2 in the downstream side of described high pressure turbine, and has mist separator 4b and heater 5b; Low-pressure turbine 6b, it is connected with described main steam system 21b-3 in the downstream side of described moisture separating heater; Condenser 7b, it is connected with described main steam system 21b-4 in the downstream side of described low-pressure turbine; Condensation water system 22b, its condensed water produced by described condenser 7b is supplied to described steam generator 1b, and described steam-turbine power plant also possesses: mist separator drainage system 25b, and it reclaims the sluicing of described mist separator; Sluicing tank 14b, it is arranged at described mist separator drainage system; Heater drainage system 26b-1,26b-2,26b-3, heater supplies steam described in its subtend steam after carrying out heat exchange or water are carried; Flash drum 13b, it is arranged at described heater drainage system; Flash drum drainage system 28b, it is connected with described flash drum in the downstream side of described flash drum, and is connected with described sluicing tank; Flash system 27b, it is connected with the described main steam system 21b-2 in the downstream side of the upstream side and described high pressure turbine that are positioned at described mist separator 4b described flash drum 13b.In described structure, further as shown in Figure 5, preferably possess: feed-water heater 8b, it is connected with the described condensation water system 22b-1 in the downstream side of described condenser; And degasser 12b, it is connected with the described condensation water system in the downstream side of described condenser, is connected with described sluicing tank connected drainage system 29b in the downstream side of described sluicing tank 14b to described degasser 12b.
In the 5th mode of execution of the present utility model, when making heater 5b be level Four, preferably bleed from 3 of high pressure turbine positions as heating source.As shown in Figure 6, preferred described heater 5c possesses: the primary heater 5c-1 being positioned at the downstream side of described mist separator 4c, be positioned at the secondary heater 5c-2 in the downstream side of described primary heater, be positioned at the 3rd heater 5c-3 in the downstream side of described secondary heater, and be positioned at the 4th heater 5c-4 in downstream side of described 3rd heater, steam is supplied to described primary heater 5c-1 from the first system 24c-1 be connected with the first bleed position 23c-1 of described high pressure turbine, steam is supplied to described secondary heater 5c-2 from the second system 24c-2 be connected with the second bleed position 23c-2 of described high pressure turbine, the vapor (steam) temperature of described second bleed position 23c-2 is higher than the vapor (steam) temperature of described first bleed position, steam is supplied to described 3rd heater 5c-3 from the 3rd system 24c-3 be connected with the 3rd bleed position 23c-3 of described high pressure turbine, the vapor (steam) temperature of described 3rd bleed position 23c-3 is higher than the vapor (steam) temperature of described second bleed position, steam is supplied to described 4th heater 5c-4 from the Quaternary system be connected with the described main steam system 21c-1 24c-4 that unites, described Quaternary system system 24c-4 is connected with the entrance of described high pressure turbine.It should be noted that, in the above-described embodiment, further, via flash distillation sluicing tank (dual-purpose tank) of holding concurrently, flash distillation is carried out to the sluicing of mist separator and both the sluicing of primary heater, this steam is supplied to the entrance (with reference to structure shown in Fig. 4) of mist separator 4b, 4b, also can forms by simplified apparatus while the raising thermal efficiency thus.
Below, according to embodiment, the utility model is specifically described.
(embodiment 1)
In embodiment 1 as shown in Figure 2, steam generator 1b → high pressure turbine 2b → moisture separating heater 3b → low-pressure turbine 6b → condenser 7b
low pressure feed-water heater 8b
degasser 12b
high service heater 9b (10b, 11b)
the such formation of steam generator 1b is as in the past.Be with difference in the past, the formation of moisture separating heater 3b comprises mist separator 4b, with primary heater 5b-1, secondary heater 5b-2, these three grades of heater 5b of 3rd heater 5b-3, compared with extraction steam position (bleed position) 23b-1 used with the heating source as primary heater 5b-1, the extraction steam of the heating source use as the secondary heater 5b-2 added is extracted at the position 23-2 of the more upstream side of high pressure turbine 2b, on the other hand, identical with the sluicing of mist separator 4b, the sluicing of primary heater 5b-1 is recycled to degasser 12b.In this embodiment, Fig. 3 illustrates the 1st variation of the sluicing of primary heater 5b-1 being carried out to flash distillation, Fig. 4 illustrates and to be held concurrently by common flash distillation that (dual-purpose tank 14 ' b) processes the 2nd variation of the sluicing of mist separator 4b and the sluicing of primary heater 5b-1 to sluicing tank, and Fig. 5 illustrates the 3rd variation that the heating source of moisture separating heater and the heating source of high service heater do not share and arrange respectively.
In fig. 2, in above-mentioned steam-turbine power plant, produce high pressure steam by nuclear energy or firepower by water at steam generator 1b, then the steam of generation is sent to high pressure turbine 2b via main steam system 21b-1.Herein, main steam system 21b refers to from the system steam generator 1b to condenser 7b, mainly supply as a vapor in main steam system, wherein, main steam system 21b comprises from steam generator 1b to the main steam system 21b-1 of high pressure turbine 2b, from high pressure turbine 2b to the main steam system 21b-2 of moisture separating heater 3b, main steam system 21b-3 from moisture separating heater 3b to low-pressure turbine 6b, from low-pressure turbine 6b to the main steam system 21b-4 of condenser 7b.On the other hand, condensation water system 22b refers to from the system condenser 7b to steam generator 1b, main with the form supply of water in condensation water system.
High pressure turbine 2b is transferred the high pressure steam (main steam) that steam generator produces, and rotates using this high pressure steam as driving force.The running shaft of the turbine rotor of high pressure turbine 2b is connected to generator, by making the turbine rotor of high pressure turbine rotate, and by electrical power generators.Steam is sent to outlet by from high-pressure turbine inlet.Turbine rotor has multistage wing row, and main steam is arranged by the multistage wing and turbine rotor rotation is done work, and therefore upstream is High Temperature High Pressure, becomes low-temp low-pressure along with near downstream.The steam done work at high pressure turbine place is sent to moisture separating heater 3b via main steam system 21b-2.Herein, call the steam by the wing of high pressure turbine row midway is extracted from the midway of high pressure turbine casing " extraction steam ".In the present embodiment, bleed position is set in two positions that steam condition is different.
That is, as shown in Figure 2, the first bleed position 23b-1 is arranged at the ratio second bleed position 23b-2 level downstream in multistage wing row, and the second bleed position 23b-2 is arranged at than the first bleed position 23b-1 level by the upstream.This first bleed position 23b-1 and the second bleed position 23b-2, is set to the position adapted with the steam condition obtained according to primary heater 5b-1 and secondary heater 5b-2.And then the steam at the second bleed position 23b-2 place is than the steam High Temperature High Pressure at the first bleed position 23b-1 place.Further, the steam extracted by the first bleed position 23b-1 is sent to primary heater 5b-1 via the first system 24b-1, and the steam extracted by the second bleed position 23b-2 is sent to secondary heater 5b-2 via second system 24b-2.
In addition, moisture separating heater 3b comprises mist separator 4b, primary heater 5b-1, secondary heater 5b-2 and the 3rd heater 5b-3, be arranged between main steam system 21b-2 and the 21b-3 from high pressure turbine to low-pressure turbine delivering vapor, carry out the moisture removing of humid steam and the device of heating.Namely, containing a large amount of moisture from the steam that high-pressure turbine outlet is discharged, remove after moisture at mist separator 4b, steam sequentially passes through after heater 5b heats further with primary heater 5b-1 → secondary heater 5b-2 → the 3rd heater 5b-3, and steam is sent to low-pressure turbine 6b.Herein, the temperature variation of the main steam passed through is set to mist separator 180 DEG C → primary heater 200 DEG C → secondary heater the 230 DEG C → the 3rd heater 260 DEG C (due to the difference of design condition, numerical value probably can change in ± 10 DEG C).On the other hand, pressure is roughly the pressure of high-pressure turbine exhaust.And then the heating source of primary heater 5b-1 is the steam (steam the first bleed position 23b-1 of high pressure turbine extracts) from the first system 24b-1.On the other hand, the heating source of secondary heater 5b-2 is the steam (steam the second bleed position 23b-2 of high pressure turbine extracts) from second system 24b-2, and the heating source of the 3rd heater 5b-3 is the steam (being extracted near the main steam system of upstream side by the entrance than high pressure turbine) from the 3rd system 24b-3.Herein, although 3 heater 5b-1 ~ 5b-3 heat main steam, the first system 24b-1, second system 24b-2, the 3rd system 24b-3 are directly not crossing with main steam and only carry out heat exchange.The steam finishing the first system ~ the 3rd system of heat exchange is sent to the equipment on condensation water system 22b via primary heater drainage system 26b-1 ~ the 3rd heater drainage system 26b-3.
Three grades of mode of heatings of above-described embodiment 1, as shown in Figure 3, the steam of preferred the first system 24b-1 is in primary heater 5b-1 place's heat exchange, its primary heater drainage system 26b-1 is in the temporary transient vapor-liquid separation in flash drum 13b place, and steam is sent to mist separator 4b together with main steam system 21b-2.Herein, flash drum 13b makes high pressure sluice to evaporate, as the device of low pressure steam recycling again.When the sluicing of high pressure-temperature is exposed to the atmosphere of low pressure, the phenomenon that the part of sluicing becomes steam is called " flash distillation ", and the steam so produced is called flash steam.
The steam of second system 24b-2, in secondary heater 5b-2 place's heat exchange, is sent to the first high service heater 10b via secondary heater drainage system 26b-2.On the other hand, the steam of the 3rd system 26b-3, in the 3rd heater 5b-3 place's heat exchange, is sent to the second high service heater 11b via the 3rd heater drainage system.
In figure 3, connected the main steam system 21b-2 of the inlet upstream side of primary heater drainage system 26b-1 and moisture separating heater by flash system 27b, make the sluicing flash distillation of primary heater 5b-1 (make it flash distillation by main steam system (low pressure) and primary heater drainage system (high pressure) thus.)。With by secondary heater in the past form carry out flash distillation situation compared with, use the sluicing of the primary heater drainage system 26b-1 of low temperature more to carry out flash distillation, therefore efficiency is good.
In addition, in figure 3, the moisture removed by mist separator 4b is recovered, and is sent to sluicing tank 14b by mist separator drainage system 25b.The midway of mist separator drainage system 25b is provided with sluicing tank 14b, primary heater drainage system 28b is connected to the sluicing tank 14b of this mist separator drainage system 25b.That is, the sluicing of the sluicing of mist separator 4b and primary heater 5b is integrated into a sluicing tank 14b.In the utility model, the temperature difference of mist separator drainage system 25b and primary heater drainage system 26b-1 diminishes, therefore, it is possible to more sluicing is integrated on low-loss ground.Thus, the complicated of equipment can be prevented by integrating drainage system.
It should be noted that, the drainage system 29b in the downstream side of sluicing tank 14b is connected with degasser 12b.Thereby, it is possible to accumulation sluices in sluicing tank, be sent to degasser 12b.
And low-pressure turbine 6b is with the steam carried from moisture separating heater 3b for driving force rotates, and the running shaft of turbine rotor is connected to generator, is generated electricity by the rotation of turbine rotor.The steam done work at low-pressure turbine 6b place is sent to condenser 7b.
Condenser 7b makes the steam of being discharged by low-pressure turbine outlet be condensed by the heat exchange with seawater etc., makes it the device becoming condensed water, the system in the downstream side of condenser 7b is called condensation water system 22b.The condensed water of generation is sent to low pressure feed-water heater 8b via condensation water system 22b.
The water (water supply) that condenser produces is carried out the device that heats by feed-water heater 8b, after object is the water supply being back to steam generator 1b to heat in advance, then makes it to return steam generator 1b.This is the efficiency in order to improve when steam generator produces steam again.Low pressure feed-water heater 8b is not configured at condensation water system 22b, is provided with 4 low pressure feed-water heater 8b and high service heater 9b (10b, 11b), directly crossing with heating source and only carry out heat exchange.Low pressure feed-water heater 8b is provided with 4 in condensation water system 22b-1, uses the extraction steam from low-pressure turbine as heating source, plays the effect that the water supply of low temperature is compared in heating.On the other hand, high service heater is arranged at condensation water system 22b-2, has the first high service heater 10b and the second high service heater (final feed-water heater) 11b.
The heating source of the first high service heater 10b comprises the first high service heating system (bleeding from the first bleed position of high pressure turbine) 32b and secondary heater drainage system 26b-2.On the other hand, the heating source of the second high service heater 11b comprises the second high service heating system (bleeding from the second bleed position of high pressure turbine) 33b and the 3rd heater drainage system 26b-3.
First high service heating system 32b and the first system 24b-1 extracts the steam of the same position of high pressure turbine.That is, air extractor can be shared and pipe arrangement of bleeding.Go for the transformation of equipment in the past, also can not share and bleed from arbitrary position.On the other hand, the second high service heating system 33b and second system 24b-2 extracts the steam of same position.That is, air extractor can be shared and pipe arrangement of bleeding.Go for the transformation of equipment in the past, but, also can not share.
Such as, when the double-bank heater that transformation past case is such, only add primary heater again to transform, and new the first system is set in the midway of the first high service heating system and makes it to connect to heater, just easily can be transformed into the formation of three grades of heaters.
Degasser 12b is the device for removing the oxygen contained in water supply, by being heated from the direct feeding degasser of bleeding of high-pressure turbine exhaust.Degasser is arranged at condensation water system 22b, and is arranged at low pressure feed-water heater 8b and between high service heater 10b, 11b.Further, the sluicing from the drainage system in the downstream side of sluicing tank is provided to degasser 12b, sluicing is directly supplied in water supply, and supplying water with low pressure mixes.
In addition, in the embodiment 1 of Fig. 3, the sluicing of multiple heater can be integrated in a sluicing tank.Can drainage system be arranged thus, avoid the complicated of equipment.Shown in 2nd variation of Fig. 4, the hygroscopic water Fen From drainage system 25b be connected with mist separator 4b and the primary heater drainage system 26b-1 that is connected with primary heater 5b-1 is connected to the dual-purpose tank 14 ' b of the function having both flash drum and sluicing tank.This can dual-purpose equipment, prevents the complicated of equipment.Other the parts identical with embodiment 1 use identical mark, omit the description.
Further, in 3rd variation of Fig. 5, as high speed turbine bleed position 23b-1,23b-2 of high pressure turbine bleed position 23b-3,23b-4 of thermal source 32b, 33b of high service heater 10b, 11b and heat source 24b-1,24b-2 of moisture separating heater, bleed from the bleed position of different high speed turbines, extract optimum steam from high pressure turbine, improve the efficiency of high pressure turbine.Other the parts identical with Fig. 4 use identical mark, omit the description.
(embodiment 2)
Fig. 6 is the embodiment 2 that the basis of the embodiment 1 of Fig. 3 is improved, show additional 4th heater 5c-4, making from bleeding of high pressure turbine is three positions, with the order that temperature reduces successively, the basis of bleed position 23c-1,23c-2 (being 23b-1,23b-2 in Fig. 3) is added the bleed position of 23c-3, the steam extracted by this is supplied to primary heater 5c-1, secondary heater 5c-2 and the 3rd heater 5c-3, makes it the situation becoming heating source.That is, as shown in Figure 6, possess: the primary heater 5c-1 being positioned at the downstream side of described mist separator 4c, be positioned at the secondary heater 5c-2 in the downstream side of described primary heater, be positioned at the 3rd heater 5c-3 in the downstream side of described secondary heater, and be positioned at the 4th heater 5c-4 in downstream side of described 3rd heater, steam is supplied to described primary heater 5c-1 from the first system 24c-1 be connected with the described first bleed position 23c-1 of described high pressure turbine, steam is supplied to described secondary heater 5c-2 from the second system 24c-2 be connected with the described second bleed position 23c-2 described high pressure turbine, the vapor (steam) temperature of described second bleed position 23c-2 is higher than the vapor (steam) temperature of described first bleed position, steam is supplied to described 3rd heater 5c-3 from the 3rd system 24c-3 be connected with the 3rd bleed position 23c-3 of described high pressure turbine, the vapor (steam) temperature of described 3rd bleed position 23c-3 is higher than the vapor (steam) temperature of described second bleed position, steam is supplied to described 4th heater 5c-4 from the Quaternary system be connected with the described main steam system 21c-1 24c-4 that unites, described main steam system 21c-1 is connected with the entrance of described high pressure turbine.And, the drainage system 25c of mist separator 4c and the drainage system 26c-1 of primary heater 5c is connected to common sluicing tank 14c-1, and the drainage system 26c-3 of the drainage system 26c-2 of secondary heater and the 3rd heater is connected to common sluicing tank 14c-2.Other the parts identical with the embodiment 1 of Fig. 3 use identical mark, and level Four heating uses symbol c.In the present embodiment, heater increases by 1, becomes 4.The present embodiment is by adopting level Four heater, and the vapor (steam) temperature difference of secondary heater 5c-2 and the 3rd heater 5c-3 diminishes, and the state of the sluicing after the heat exchange of heater place is also close, and when being therefore integrated into a sluicing, energy loss also tails off.
As mentioned above, in the utility model, be three grades of 5b-1,5b-2,5b-3 or level Four 5c-1,5c-2,5c-3,5c-4 by making the heater of moisture separating heater 3b, 3c, further, supply from the suitable steam of the extract system selective temperature of main steam system or high pressure turbine as heating source.Therefore, compared with the situation of double-bank heater, can the temperature of the extraction steam being sent to primary heater be set lower.Thereby, it is possible to by the bleed position being sent to the steam of primary heater at high pressure turbine place, be set as the position compared with position in the past with power at low pressure.That is, because the cyclic steam (main steam) at heater place at different levels diminishes compared with the situation of double-bank heater with the temperature difference of heating steam (heating source), therefore, it is possible to more efficiently heat.And then compared with situation in the past, the driving of high pressure turbine can use more main steams.Thus, the efficiency of steam-turbine power plant improves.
In addition, in the above-described embodiment, be that three grades or level Four are illustrated to make the heater of moisture separating heater, but, be not limited to this two kinds of modes, also according to circumstances can adopt more than three grades or more than level Four heater.
In addition, in the above-described embodiment, the steam suitable from the extract system selective temperature of main steam system or high pressure turbine and supplying as heating source, but as long as the bleed position that thermal creep stress is suitable according to demand, be not limited to above-mentioned position.
And, in the above-described embodiment, carry out flash distillation by flash drum to heater drainage system and the concrete form re-used as the steam source of mist separator and flash drum, sluicing tank can suitably be out of shape according to actual conditions or change, this is apparent to those skilled in the art.
As mentioned above, preferred embodiment be illustrated of the present utility model for embodiment 1,2 and variation thereof, but various distortion or change can be understood to those skilled in the art, these distortion or the scope changed as long as no departing from the technical solution of the utility model restriction, all should be included in wherein.
Claims (14)
1. a steam-turbine power plant, it possesses:
Steam generator, it produces steam;
Main steam system, it supplies the steam that described steam generator produces;
High pressure turbine, it supplies steam from the described main steam system be connected with the outlet of described steam generator;
Moisture separating heater, it supplies steam from the described main steam system be connected with the outlet of described high pressure turbine, and has mist separator and heater;
Low-pressure turbine, it supplies steam from the described main steam system be connected with the outlet of described moisture separating heater;
Condenser, it supplies steam from the described main steam system be connected with the outlet of described low-pressure turbine; And
Condensation water system, its condensed water produced by described condenser is supplied to described steam generator,
The feature of described steam-turbine power plant is:
Described moisture separating heater has the heater of more than 3,
The heating source of the heater of described more than 3 is connect from the outlet of described steam generator and supply to described high pressure turbine the extraction steam that the part of the steam in the described main steam system of steam and more than 2 bleed positions different from the vapor (steam) temperature described high pressure turbine extract respectively.
2. steam-turbine power plant according to claim 1, is characterized in that,
Described heated chamber is standby: be positioned at the primary heater in the downstream side of described mist separator, be positioned at the secondary heater in the downstream side of described primary heater and be positioned at the 3rd heater in downstream side of described secondary heater,
Steam is supplied to described primary heater from the first system be connected with the first bleed position of described high pressure turbine,
Supply steam from the second system be connected with the second bleed position of described high pressure turbine to described secondary heater, the vapor (steam) temperature of described second bleed position higher than the vapor (steam) temperature of described first bleed position,
From the 3rd system to described 3rd heater supplies steam, described 3rd system is with the outlet being connected to described steam generator and be connected to the described main steam system that steam supplied by described high pressure turbine.
3. steam-turbine power plant according to claim 2, is characterized in that, possesses:
Primary heater drainage system, it is to supplying described steam from described the first system to described primary heater and steam after heat exchange or water are carried;
Flash drum, it is connected with described primary heater drainage system;
Flash system, its to described flash drum with the upstream side being positioned at described mist separator and the described main steam system in the downstream side of described high pressure turbine be connected,
The steam having carried out carbonated drink separation at described flash drum is supplied from described flash system to described mist separator.
4. the steam-turbine power plant according to Claims 2 or 3, is characterized in that, possesses:
First high service heater, it is connected in described condensation water system;
Second high service heater, it is connected in described condensation water system, and is positioned at the downstream side of described first high service heater;
First high service heating system, its by the steam that extracts from described high pressure turbine to described first high service heater supplies; And
Second high service heating system, its by the steam that extracts from described high pressure turbine to described second high service heater supplies,
Further, described first high service heating system and described the first system share a part for bleed position from described high pressure turbine and extract system,
Described second high service heating system and described second system share a part for bleed position from described high pressure turbine and extract system.
5. steam-turbine power plant according to claim 1, is characterized in that,
Described heated chamber is standby: the 3rd heater in the downstream side of described secondary heater that is positioned at the primary heater in the downstream side of described mist separator, is positioned at the secondary heater in the downstream side of described primary heater, is positioned at and be positioned at the 4th heater in downstream side of described 3rd heater
Steam is supplied to described primary heater from the first system be connected with the first bleed position described high pressure turbine,
Supply steam from the second system be connected with the second bleed position described high pressure turbine to described secondary heater, the vapor (steam) temperature of described second bleed position higher than the vapor (steam) temperature of described first bleed position,
From the 3rd system be connected with the 3rd bleed position described high pressure turbine to described 3rd heater supplies steam, the vapor (steam) temperature of described 3rd bleed position higher than the vapor (steam) temperature of described second bleed position,
From Quaternary system system to described 4th heater supplies steam, described Quaternary system system is connected with the described main steam system of the entrance being connected to described high pressure turbine.
6. steam-turbine power plant according to claim 3, is characterized in that, possesses:
Flash drum drainage system, it is connected with described flash drum in the downstream side of described flash drum;
Mist separator drainage system, it reclaims the sluicing of described mist separator; And
Sluicing tank, it is connected with described mist separator drainage system,
Further, described flash drum drainage system is also connected with described sluicing tank.
7. steam-turbine power plant according to claim 6, is characterized in that, possesses:
Feed-water heater, it is connected in the described condensation water system in the downstream side of described condenser; And
Degasser, it is connected in the described condensation water system in the downstream side of described condenser,
Further, be connected to described degasser with the tank connected drainage system of described sluicing in the downstream side of described sluicing tank.
8. steam-turbine power plant according to claim 3, is characterized in that,
Described flash drum is a dual-purpose tank of the function with flash drum and sluicing tank,
Described dual-purpose tank, is connected with the mist separator drainage system of the sluicing of reclaiming described mist separator at the upstream side of described dual-purpose tank.
9. a steam-turbine power plant, it possesses:
Steam generator, it produces steam;
Main steam system, it supplies the steam that described steam generator produces;
High pressure turbine, it supplies steam from the described main steam system be connected with the outlet of described steam generator;
Moisture separating heater, it supplies steam from the described main steam system be connected with the outlet of described high pressure turbine, and has mist separator and heater;
Low-pressure turbine, it supplies steam from the described main steam system be connected with the outlet of described moisture separating heater;
Condenser, it is connected with described main steam system in the downstream side of described low-pressure turbine; And
Condensation water system, its condensed water produced by described condenser is supplied to described steam generator,
The feature of described steam-turbine power plant is:
Described heated chamber is standby: be positioned at the primary heater in the downstream side of described mist separator, be positioned at the secondary heater in the downstream side of described primary heater and be positioned at the 3rd heater in downstream side of described secondary heater,
Described steam-turbine power plant also possesses:
Primary heater drainage system, it carries the steam from heat exchange to described primary heater supply or water that carry out after;
Flash drum, it is connected with described primary heater drainage system;
Flash system, its to described flash drum with the upstream side being positioned at described mist separator and the described main steam system in the downstream side of described high pressure turbine be connected,
The steam having carried out carbonated drink separation at described flash drum is supplied from described flash system to described mist separator.
10. steam-turbine power plant according to claim 9, is characterized in that, possesses:
Flash drum drainage system, it is connected with described flash drum in the downstream side of described flash drum;
Mist separator drainage system, it reclaims the sluicing of described mist separator; And
Sluicing tank, it is connected with described mist separator drainage system,
Further, described flash drum drainage system is also connected with described sluicing tank.
11. steam-turbine power plants according to claim 10, is characterized in that possessing:
Feed-water heater, it is connected in the described condensation water system in the downstream side of described condenser; And
Degasser, it is connected in the described condensation water system in the downstream side of described condenser,
Further, be connected to described degasser with the tank connected drainage system of described sluicing in the downstream side of described sluicing tank.
12. steam-turbine power plants according to claim 9, is characterized in that,
Described flash drum is a dual-purpose tank of the function with flash drum and sluicing tank,
Described dual-purpose tank, is connected with the mist separator drainage system of the sluicing of reclaiming described mist separator at the upstream side of described dual-purpose tank.
13. 1 kinds of steam-turbine power plants, it possesses:
Steam generator, it produces steam;
Main steam system, it supplies the steam that described steam generator produces;
High pressure turbine, it connects from the described main steam system be connected with the outlet of described steam generator;
Moisture separating heater, it is connected with described main steam system in the downstream side of described high pressure turbine, and has mist separator and heater;
Low-pressure turbine, it is connected with described main steam system in the downstream side of described moisture separating heater;
Condenser, it is connected with described main steam system in the downstream side of described low-pressure turbine;
Condensation water system, its condensed water produced by described condenser is supplied to described steam generator,
The feature of described steam-turbine power plant is also possess:
Mist separator drainage system, it reclaims the sluicing of described mist separator;
Sluicing tank, it is connected with described mist separator drainage system;
Heater drainage system, heater supplies steam described in its subtend and steam after heat exchange or water are carried;
Flash drum, it is connected with described heater drainage system;
Flash drum drainage system, it is connected with described flash drum in the downstream side of described flash drum, is also connected with described sluicing tank;
Flash system, its to described flash drum with the upstream side being positioned at described mist separator and the described main steam system in the downstream side of described high pressure turbine be connected.
14. steam-turbine power plants according to claim 13, is characterized in that,
Described steam-turbine power plant possesses: be connected to the feed-water heater in the described condensation water system in the downstream side of described condenser; And be connected to described condenser downstream side described condensation water system on degasser,
Be connected to described degasser with the tank connected drainage system of described sluicing in the downstream side of described sluicing tank.
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