CN205191541U - External steam cooling ware water supply system of low capacity - Google Patents
External steam cooling ware water supply system of low capacity Download PDFInfo
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- CN205191541U CN205191541U CN201520949893.4U CN201520949893U CN205191541U CN 205191541 U CN205191541 U CN 205191541U CN 201520949893 U CN201520949893 U CN 201520949893U CN 205191541 U CN205191541 U CN 205191541U
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Abstract
External steam cooling ware water supply system of low capacity, it includes that one disposes at the external steam cooling ware of the low capacity of thermal power plant, the external steam cooling ware of low capacity has concatenated big orifice plate of the person in charge and steam cooling ware supply line through importing and exporting water feeding pipe, external steam cooling ware import and export and to have set up water of the same kind side feedwater bypass pipeline, a bypass aperture plate of installation and a bypass electric brake valve on feedwater bypass pipeline between the water feeding pipe, the external steam cooling ware of low capacity arrange in the main supply line of steam turbine room distance at a distance, by feedwater bypass piped water supply, it has simple structure, uses simple to operate, has both guaranteed external steam cooling ware operation safety, can improve external steam cooling ware again and arrange the position flexibility to reduce the investment, compression main building size reduces the transformation unit and increases characteristics such as external steam cooling ware difficulty.
Description
Technical field
The utility model relates to a kind of for thermal power plant low capacity externally arranged steam cooler water supply system, belong to thermal power plant equipment technical field.
Background technology
Steam turbine chopped-off head after the reheating of thermal power plant draws gas and is generally three grades and draws gas 11,12,13, and the degree of superheat is higher.For making full use of its high-grade heat energy, standing meter externally arranged steam cooler 14, with three steam pumping superheat section heats heat No. one high add 15 outlets feedwater, also comprise No. two high add 16 and No. three highly add 17, make full use of the high temperature that three are pumped through hot arc, reduce heat transfer temperature difference simultaneously and reduce damage, effectively can improve generatine set heat efficiency.The externally arranged steam cooler 14 of current routine generally adopts supervisor's macroporous plate to add the design of steam condenser feed water by-pass, this requires that steam condenser 14 adopts the inside feedwater flow of larger capacity, and need to arrange nearby with main feed line, to control the inner feedwater flow of steam condenser and temperature rise under various unit load in limited range.As adopted low capacity externally arranged steam cooler under conventional design, then the feedwater temperature rise of steam condenser inside is larger, easily cause interior evaporation when unit load is lower, inside may be caused when unit load is higher to exceed standard to water flow velocity, affect unit operation safety.Therefore under conventional design, steam condenser capacity is comparatively large, and equipment investment is higher, system and pipe arrangement more complicated, it is larger that existing power plant increases externally arranged steam cooler difficulty as transformed.
As shown in Figure 1, described steam turbine comprises high pressure cylinder 18 and intermediate pressure cylinder 19, between be connected with reheater 20, because main feedwater macroporous plate is unadjustable, the inner feedwater flow of steam condenser is caused synchronously to change with main feedwater flow and unit load, thus easily vaporize when underload, steam cold when high load capacity, the inner flow velocity of steam condenser easily exceeds standard.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art existence, and provide a kind of structure simple, easy to install and use, both externally arranged steam cooler security of operation had been ensured, the flexibility of externally arranged steam cooler position can be improved again, thus reducing investment, compression main building size, reduces the low capacity externally arranged steam cooler water supply system that retrofitted unit increases externally arranged steam cooler difficulty.
The purpose of this utility model has been come by following technical solution, it comprises the low capacity externally arranged steam cooler that is configured in thermal power plant, described low capacity externally arranged steam cooler is serially connected with supervisor's macroporous plate and steam condenser supply line by importing and exporting feedwater piping, described externally arranged steam cooler is imported and exported between feedwater piping and is provided with a Lu Shui side feed water by-pass pipeline, and feed water by-pass pipeline installs a bypass aperture plate and a bypass electric gate valve; Close electric gate valve during underload, ensure that steam condenser inner stream flow is larger; Open the feedwater of electric gate valve splitter section during high load capacity, ensure that steam condenser inner stream flow does not exceed standard.
Described low capacity externally arranged steam cooler is arranged in steam turbine building distance main feed line remotely, by feed water by-pass piped water supply.
The utility model has following technique effect:
A improves low capacity externally arranged steam cooler safety in operation, and when ensure that underload electric gate valve is closed, steam condenser inner stream flow is larger; When high load capacity electric gate valve is opened, steam condenser inner stream flow does not exceed standard;
B improves the flexibility of low capacity externally arranged steam cooler position, thus reduces investment, have compressed main building size, decreases the difficulty that retrofitted unit increases externally arranged steam cooler.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing conventional externally arranged steam cooler system.
Fig. 2 is the structural representation of low capacity externally arranged steam cooler water supply system described in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the utility model is described in detail: shown in Fig. 2, a kind of low capacity externally arranged steam cooler water supply system described in the utility model, it comprises the low capacity externally arranged steam cooler 1 that is configured in thermal power plant, described low capacity externally arranged steam cooler 1 is serially connected with supervisor's macroporous plate 3 and steam condenser supply line 4 by importing and exporting feedwater piping 2, described externally arranged steam cooler 1 is imported and exported between feedwater piping 4 and is provided with a Lu Shui side feed water by-pass pipeline 5, feed water by-pass pipeline 5 installs a bypass aperture plate 6 and a bypass electric gate valve 7.
Described low capacity externally arranged steam cooler 1 is arranged in steam turbine building distance main feed line remotely, is supplied water by feed water by-pass pipeline 5.
Embodiment: the utility model improves prior art, and as in Fig. 1 and Fig. 2, externally arranged steam cooler 1 is all supplied water by supply line 2, and main feed line 2 is provided with main feedwater macroporous plate 3.
Shown in composition graphs 2, between the import and export feedwater piping of externally arranged steam cooler 1, be provided with a Lu Shui side feed water by-pass pipeline 5, this bypass duct 5 installs a bypass aperture plate 6 and a bypass electric gate valve 7.Close electric gate valve during underload, ensure that steam condenser inner stream flow is larger; Open the feedwater of electric gate valve splitter section during high load capacity, ensure that steam condenser inner stream flow does not exceed standard.
The utility model is improvements over the prior art, and therefore, it is substantially identical that original technology comprises the content shown in Fig. 1, comprises accompanying drawing mark.
Low capacity externally arranged steam cooler is arranged in steam turbine building distance main feed line remotely by the utility model, by feed water by-pass piped water supply; Main feed line arranges main restricting orifice, for steam condenser provides required crushing; A Lu Shui side feed water by-pass pipeline is set between the feedwater piping that externally arranged steam cooler is imported and exported, this feed water by-pass pipeline installs a bypass aperture plate 6 and a bypass electric gate valve 7.
Claims (2)
1. low capacity externally arranged steam cooler water supply system, it comprises the low capacity externally arranged steam cooler that is configured in thermal power plant, described low capacity externally arranged steam cooler is serially connected with supervisor's macroporous plate and steam condenser supply line by importing and exporting feedwater piping, it is characterized in that described externally arranged steam cooler is imported and exported between feedwater piping and be provided with a Lu Shui side feed water by-pass pipeline, feed water by-pass pipeline installs a bypass aperture plate and a bypass electric gate valve.
2. low capacity externally arranged steam cooler water supply system according to claim 1, is characterized in that described low capacity externally arranged steam cooler is arranged in steam turbine building distance main feed line remotely, by feed water by-pass piped water supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520949893.4U CN205191541U (en) | 2015-11-25 | 2015-11-25 | External steam cooling ware water supply system of low capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520949893.4U CN205191541U (en) | 2015-11-25 | 2015-11-25 | External steam cooling ware water supply system of low capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205191541U true CN205191541U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520949893.4U Active CN205191541U (en) | 2015-11-25 | 2015-11-25 | External steam cooling ware water supply system of low capacity |
Country Status (1)
| Country | Link |
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| CN (1) | CN205191541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333415A (en) * | 2015-11-25 | 2016-02-17 | 中国能源建设集团浙江省电力设计院有限公司 | Water supply system of low-capacity external type steam cooler |
-
2015
- 2015-11-25 CN CN201520949893.4U patent/CN205191541U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333415A (en) * | 2015-11-25 | 2016-02-17 | 中国能源建设集团浙江省电力设计院有限公司 | Water supply system of low-capacity external type steam cooler |
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