CN208252168U - A kind of feed pump turbine intake system - Google Patents

A kind of feed pump turbine intake system Download PDF

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Publication number
CN208252168U
CN208252168U CN201820501130.7U CN201820501130U CN208252168U CN 208252168 U CN208252168 U CN 208252168U CN 201820501130 U CN201820501130 U CN 201820501130U CN 208252168 U CN208252168 U CN 208252168U
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China
Prior art keywords
steam
feed pump
pump turbine
valve
pipe
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CN201820501130.7U
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Chinese (zh)
Inventor
徐星
谭锐
郝飞
于强
何新荣
彭祥
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Guoneng Nanjing Electric Power Test Research Co.,Ltd.
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Guodian Nanjing Electric Power Test Research Co Ltd
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Abstract

The utility model discloses a kind of feed pump turbine intake systems, feed pump turbine into vapour source be four steam pumpings, three steam pumpings and cold steam again, feed pump turbine admission end is equipped with stop valve, four steam pumpings are connected to feed pump turbine by four steam pumping pipes, cold steam again is connected to feed pump turbine by cold steam pipe again, three steam pumpings are connected to feed pump turbine by three steam pumping pipes, four steam pumping pipes are equipped with non-return valve and motor-driven valve, are respectively equipped with non-return valve, motor-driven valve and switching valve on cold steam pipe again and three steam pumping pipes.Switching of the utility model by multi-steam source, the optimal economic point that feed pump turbine is run when can search out underrun are conducive to improve Economical Operation of Light-Loaded Units energy.

Description

A kind of feed pump turbine intake system
Technical field
The utility model relates to generating equipment technical field, specifically a kind of feed pump turbine intake system.
Background technique
Currently, the design of Power Plant system it is upper general taken out using four, cold steam again as feed pump turbine steam.Ginseng See attached drawing 3, when actual motion, when due to different load operation, feed pump turbine requires steam inlet condition different, economy Can be also closely related with the matching of steam inlet condition, only use four pumpings and cold steam again as the steam of feed pump turbine, not It is able to satisfy the requirement of feed pump turbine safe and highly efficient operation under current working.
Summary of the invention
The purpose of this utility model is in view of the deficiency of the prior art, to provide a kind of feed pump turbine into vapour system System.
The purpose of this utility model is achieved through the following technical solutions:
A kind of feed pump turbine intake system, feed pump turbine into vapour source be four steam pumpings and cold steam again, four No. four steam extraction steam of steam pumping, that is, steam turbine, cold steam again refer to that high pressure cylinder steam discharge, feed pump turbine admission end are equipped with master Steam valve, which is characterized in that feed pump turbine further includes three steam pumpings into vapour source, and four steam pumping passes through four steam pumping pipes It is connected to feed pump turbine, the cold steam again is connected to feed pump turbine, three steam pumping by cold steam pipe again Be connected to feed pump turbine by three steam pumping pipes, the four steam pumpings pipe is equipped with non-return valve and motor-driven valve, it is described it is cold again Non-return valve, motor-driven valve and switching valve are respectively equipped on steam pipe and three steam pumping pipes.
In the further design scheme of the utility model, feed pump turbine further includes that boiler reheater steams into vapour source Vapour, the boiler reheater steam are connected to feed pump turbine by boiler reheater steam pipe, and the boiler reheater steams Steam pipe is equipped with non-return valve, motor-driven valve and switching valve.
In the further design scheme of the utility model, feed pump turbine into vapour source further include one steam pumping of pot, institute It states a steam pumping and feed pump turbine is connected to by a steam pumping pipe, the steam pumping pipe is equipped with non-return valve, motor-driven valve And switching valve.
In the further design scheme of the utility model, feed pump turbine further includes that boiler superheater steams into vapour source Vapour, the boiler superheater steam are connected to feed pump turbine by boiler superheater steam pipe, and the boiler superheater steams Steam pipe is equipped with non-return valve, motor-driven valve and switching valve.
The utility model have it is following prominent the utility model has the advantages that
The long-term underrun of fired power generating unit has become normality, and the utility model can better meet feed pump steamer Machine goes out force request, especially Ultra-low load operation in host different load.Meanwhile by the switching of multi-steam source, can seek The optimal economic point that feed pump turbine is run when finding underrun is conducive to improve Economical Operation of Light-Loaded Units Energy.
Detailed description of the invention
Fig. 1 is feed pump turbine intake system schematic diagram in embodiment 1;
Fig. 2 is feed pump turbine intake system schematic diagram in embodiment 2;
Fig. 3 is original feed pump turbine intake system schematic diagram;
In figure, 1- reheated steam pipe, the main decatize steam pipe of 2-, the cold steam pipe again of 3-, mono- steam pumping pipe of 4-, tri- steam pumping of 5- Pipe, tetra- steam pumping pipe of 6-, 7- motor-driven valve, 8- feed pump turbine stop valve, 9- feed pump turbine, 10- feed pump, 11- are low Cylinder pressure, 12- generator, 13- switching valve, 14- non-return valve, the steam pipe of 15- boiler superheater, 16- boiler reheater steam pipe, 17- superheater, 18- reheater.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Embodiment 1
Referring to Fig. 1, high pressure cylinder is connect with low pressure (LP) cylinder 11, and low pressure (LP) cylinder 11 is connect with generator 12, feed pump 10 and feed pump Steam turbine 9 connects, and high pressure cylinder is connect by main decatize steam pipe 2 with superheater 17, and high pressure cylinder passes through reheated steam pipe 1 and reheater 18 connections.Feed pump turbine 9 into vapour source be four steam pumpings, three steam pumpings and cold steam again from high pressure cylinder, feed pump 9 admission end of steam turbine be equipped with stop valve 8, four steam pumpings, cold steam again and three steam pumpings pass through respectively four steam pumping pipes 6, it is cold again Steam pipe 3, three steam pumping pipes 5 are connected to feed pump turbine 9, and four steam pumping pipes 6 are equipped with non-return valve 14 and motor-driven valve 7, cold Non-return valve 14, motor-driven valve 7 and switching valve 13 are respectively equipped on steam pipe 3 and three steam pumping pipes 5 again.
Under normal circumstances, unit load be 50% or more unit load, feed pump turbine 9 into vapour source be four steam pumpings, When unit load is lower, four steam pumping insufficient pressures are not able to satisfy when going out force request of feed pump turbine 9, and three smoke pipeline Switching valve 13 is opened, and three steam pumpings are introduced, and after the flow restriction control by switching valve 13, passes in succession through non-return valve 14, motor-driven valve 7, switching valve 13 and stop valve 8 do work into 9 nozzle of feed pump turbine.At this point, the non-return valve 14 on four steam pumping pipes 6 is certainly Dynamic to close, work vapour source switches to three steam pumpings by four steam pumping of host.If three steam pumpings cannot be met the requirements, by cold vapour again The switching valve 13 of source capsule road is opened, and closes the switching valve 13 on three steam pumping pipes 5, it is economical that introducing meets feed pump turbine 9 It is required that steam, into feed pump turbine 9 do work.Conversely, load rises, four, which pump full sufficient feed pump turbine 9, goes out force request When, non-return valve 14 on four steam pumping pipes 6 automatically open, and four are pumped through regulating valve, stop valve 8, into feed pump turbine 9 Acting.Work vapour source switches to four steam pumpings by cold steam again.Meet the safe and efficient fortune of feed pump turbine 9 under current working Capable requirement improves Unit Economic performance.
Embodiment 2
Referring to fig. 2, a kind of feed pump turbine intake system, feed pump turbine 9 into vapour source be four steam pumpings, three take out Steam, 18 steam of boiler reheater, 17 steam of cold steam again, a steam pumping and boiler superheater, 9 admission end of feed pump turbine Equipped with stop valve 8, four steam pumpings, three steam pumpings, 18 steam of boiler reheater, cold steam again, a steam pumping and boiler superheater 17 steam pass through four steam pumping pipes 6, three steam pumping pipes 5,18 steam pipe 16 of boiler reheater, cold steam pipe again 3, one respectively and take out steaming Steam pipe 4 and 17 steam pipe 15 of boiler superheater are connected to feed pump turbine 9, and four steam pumping pipes 6 are equipped with non-return valve 14 and electricity Dynamic valve 7, three steam pumping pipes 5,18 steam pipe 16 of boiler reheater, cold steam pipe again 3, a steam pumping pipe 4 and boiler superheater 17 Non-return valve 14, motor-driven valve 7 and switching valve 13 are respectively equipped on steam.
The present embodiment has been further added by a steam pumping, 17 steam of boiler superheater and boiler reheating on the basis of embodiment 1 18 steam of device, when load is lower, four steam pumpings are not able to satisfy when going out force request of feed pump turbine 9, three steam pumping pipes, 5 pipeline On switching valve 13 open, three steam pumpings are introduced, after the flow restriction control by switching valve 13, stop valve 8 is passed in succession through, adjusts Valve does work into 9 nozzle of feed pump turbine.At this point, the non-return valve 14 on four steam pumping pipes 6 is automatically closed, work vapour source is Cold steam again is switched to by four steam pumping of host.If three steam pumpings cannot be met the requirements, the vapour source of a high grade is come from into boiler Reheater steam, cold steam again, a steam pumping, the switching valve 13 on boiler superheater steam pipework are opened, and are introduced and are met The steam of 9 economic requirement of feed pump turbine does work into feed pump turbine 9.When so as to search out underrun The optimal economic point that feed pump turbine 9 is run is conducive to improve Economical Operation of Light-Loaded Units energy.
It is the preferred embodiment of the utility model above, it is all to change according to made by technical solutions of the utility model, it is produced Function without departing from technical solutions of the utility model range when, belong to the protection scope of the utility model.

Claims (4)

1. a kind of feed pump turbine intake system, feed pump turbine (9) is four steam pumpings and cold steam again into vapour source, give Water pump steam turbine (9) admission end be equipped with stop valve (8), which is characterized in that feed pump turbine (9) into vapour source further include three pumpings Steam, four steam pumping are connected to feed pump turbine (9) by four steam pumping pipes (6), the cold steam again by it is cold again Steam pipe (3) is connected to feed pump turbine (9), and three steam pumping is connected to feed pump steamer by three steam pumping pipes (5) Machine (9), the four steam pumpings pipe (6) are equipped with non-return valve (14) and motor-driven valve (7), and the cold steam pipe again (3) and three, which take out, to steam Non-return valve (14), motor-driven valve (7) and switching valve (13) are respectively equipped on steam pipe (5).
2. feed pump turbine intake system according to claim 1, which is characterized in that feed pump turbine (9) into Vapour source further includes boiler reheater (18) steam, and boiler reheater (18) steam passes through boiler reheater (18) steam pipe (16) it is connected to feed pump turbine (9), boiler reheater (18) steam pipe (16) is equipped with non-return valve (14), motor-driven valve (7) and switching valve (13).
3. feed pump turbine intake system according to claim 1 or 2, which is characterized in that feed pump turbine (9) It further include one steam pumping of pot into vapour source, a steam pumping is connected to feed pump turbine (9), institute by a steam pumping pipe (4) A steam pumping pipe (4) is stated equipped with non-return valve (14), motor-driven valve (7) and switching valve (13).
4. feed pump turbine intake system according to claim 1 or 2, which is characterized in that feed pump turbine (9) It further include boiler superheater (17) steam into vapour source, boiler superheater (17) steam passes through boiler superheater (17) steam pipe (15) it is connected to feed pump turbine (9), boiler superheater (17) steam pipe (15) is equipped with non-return valve (14), motor-driven valve (7) and switching valve (13).
CN201820501130.7U 2018-10-15 2018-10-15 A kind of feed pump turbine intake system Active CN208252168U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820501130.7U CN208252168U (en) 2018-10-15 2018-10-15 A kind of feed pump turbine intake system

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Application Number Priority Date Filing Date Title
CN201820501130.7U CN208252168U (en) 2018-10-15 2018-10-15 A kind of feed pump turbine intake system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110985137A (en) * 2019-11-04 2020-04-10 中国能源建设集团华东电力试验研究院有限公司 660MW supercritical unit water supply system steam flow balance control device and control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110985137A (en) * 2019-11-04 2020-04-10 中国能源建设集团华东电力试验研究院有限公司 660MW supercritical unit water supply system steam flow balance control device and control method

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Address after: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10

Patentee after: Guoneng Nanjing Electric Power Test Research Co.,Ltd.

Address before: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10

Patentee before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd.