CN206056385U - 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage - Google Patents
1000MW double reheat power generation sets boiler blowpipe switched system stage by stage Download PDFInfo
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- CN206056385U CN206056385U CN201621053861.7U CN201621053861U CN206056385U CN 206056385 U CN206056385 U CN 206056385U CN 201621053861 U CN201621053861 U CN 201621053861U CN 206056385 U CN206056385 U CN 206056385U
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Abstract
This utility model is related to power industry blow pipe system technical field stage by stage, specifically a kind of 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage.It is characterized in that：Including first stage blow pipe system and second stage blow pipe system；Described first stage blow pipe system is included in the port of export of superheater and connects supertension main inlet throttle-stop valve using main steam line, supertension main inlet throttle-stop valve connects one end of interim pipe using supertension main inlet throttle-stop valve vacation valve element interface, described interim pipe is provided with and faces chongmen, using one end or one end of the 3rd interim pipe in connection outlet pipe device of the described cold reheat pipeline faced in chongmen switching connection second stage blow pipe system.This utility model compared with prior art, is capable of achieving blowpipe one, two-stage and is switched fast, shorten construction and debugging cycle, used according to Practical Project, normally-open can face chongmen in system operation, and system pipeline is hydrophobic unobstructed, and overall blowpipe works well.
Description
Technical field
This utility model is related to power industry blow pipe system technical field stage by stage, specifically a kind of 1000MW bis- times
Reheating embrittlement boiler blowpipe switched system stage by stage.
Background technology
Clean-up performance in boiler superheater, reheater tube and its inside jet chimney, the safety and economic operation to unit
And can smoothly go into operation and count for much.Superheater, reheater are remained in order to remove in manufacture, transport, keeping, installation process
And the various debris (such as welding slag, rotation bits, iron scale, silt particle etc.) in pipeline, boiler is formally to before steam turbine steam supply, it is necessary to pot
The superheater of stove, reheater and jet chimney carry out steam flush, to prevent from crossing in unit operation, reheater bursting and steam turbine it is logical
Stream part is damaged, and is improved safety and the economy of unit, and is improved the steam quality of run duration.Conventional 1000MW units pot
Stove blow pipe system is designed, and blow pipe system is separately designed great majority in two stages.
At present First 1000MW double reheat power generation sets, realize generating electricity by way of merging two or more grid systems first in September in 2015 on the 2nd, then this it
Before there is no with regard to 1000MW double reheat power generation sets blow pipe system stage by stage, need badly and design for the 1000MW double reheat power generation sets
It is adapted to its blowpipe switched system stage by stage.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, for First 1000MW double reheat power generation sets,
On the basis of conventional 1000MW unit boilers blow pipe system, with reference to double reheat power generation sets therrmodynamic system, new point for designing
Stage blowpipe switched system.
Above-mentioned purpose is realized, a kind of 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage, its feature is designed
It is：Including first stage blow pipe system and second stage blow pipe system；
Described first stage blow pipe system is included in the port of export of superheater and connects supertension master using main steam line
Porthole, supertension main inlet throttle-stop valve connect one end of interim pipe, described interim Guan Shangshe using supertension main inlet throttle-stop valve vacation valve element interface
Have and face chongmen, using the described cold reheat pipeline faced in chongmen switching connection second stage blow pipe system one end or
One end of 3rd interim pipe in connection outlet pipe device；
Described second stage blow pipe system is included in the other end of a cold reheat pipeline and connects a cold reheat
The import of device, the outlet of secondary low-temperature reheater connect high-pressure main throttle valve using a high temperature reheating pipeline, and high-pressure main throttle valve is adopted
High-pressure main throttle valve vacation valve element interface is sequentially connected the second interim pipe, one end of intermediate pressure by-pass pipe, the other end of intermediate pressure by-pass pipe again
Using the import of secondary cold reheat pipeline connecting secondary low-temperature reheater, described secondary cold reheat pipeline is provided with temporarily
Pipe granulating device, the outlet of described secondary low-temperature reheater connect intermediate pressure main stop valve, middle pressure master using secondary high-temperature reheating pipeline
Porthole connects one end of the 3rd interim pipe, the other end connection outlet of the 3rd interim pipe again using intermediate pressure main stop valve vacation valve element interface
One end of the 3rd interim pipe in pipe device；
Described outlet duct apparatus are that the other end for being included in the 3rd interim pipe is sequentially connected hot arc target plate device, the 4th faces
Shi Guan, deafener.
Described superheater is provided with several, and superheater outlet collection vapour header is respectively equipped with each superheater.
A described low-temperature reheater is provided with a low-temperature reheater collection vapour header.
Described secondary low-temperature reheater is provided with secondary low-temperature reheater collection vapour header.
This utility model compared with prior art, with the main steam of 1000MW double reheat power generation sets, reheated steam, bypasses system
Unite as design considerationss, with reference to field pipes deployment scenarios, using the existing bypass duct system in scene, solve space in steam turbine building
It is narrow and small to the conditional problem of blowpipe pipe arrangement, and save alloy steel material consumption, and be capable of achieving blowpipe one, two-stage it is quick
Switching, shortens construction and debugging cycle, is used according to Practical Project, normally-open can face chongmen, system in system operation
Pipeline is hydrophobic unobstructed, and overall blowpipe works well.
Description of the drawings
Fig. 1 be this utility model in embodiment be in the first stage when connection block diagram.
Fig. 2 is connection block diagram of this utility model in embodiment during the process simultaneously of first stage and second stage.
Specific embodiment
In conjunction with accompanying drawing, the utility model is further described.
Embodiment 1
In this example, a kind of 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage, it is characterised in that：Including
One stage blow pipe system and second stage blow pipe system；
Described first stage blow pipe system is included in the port of export of superheater 1 and connects supertension using main steam line 2
Main inlet throttle-stop valve 3, supertension main inlet throttle-stop valve 3 connect one end of interim pipe 5 using supertension main inlet throttle-stop valve vacation valve element interface 4, and described is interim
Pipe 5 is provided with and faces chongmen 6, using the described cold reheat pipe faced in the switching connection second stage blow pipe system of chongmen 6
One end of 3rd interim pipe 21 in the one end in road or connection outlet pipe device；
Described second stage blow pipe system is included in the other end of a cold reheat pipeline 8 and connects a cold reheat
The import of device 9, the outlet of secondary low-temperature reheater 9 connect high-pressure main throttle valve 11, the main vapour of high pressure using a high temperature reheating pipeline 10
Door 11 is sequentially connected one end of the second interim pipe 13, intermediate pressure by-pass pipe 14, middle pressure again using high-pressure main throttle valve vacation valve element interface 12
Import of the other end of shunt valve 14 using 15 connecting secondary low-temperature reheater 17 of secondary cold reheat pipeline, described is secondary low
Warm reheating pipeline 15 is provided with interim pipe granulating device 16, and the outlet of described secondary low-temperature reheater 17 adopts secondary high-temperature reheating
Pipeline 18 connects intermediate pressure main stop valve 19, and intermediate pressure main stop valve 19 connects the 3rd using intermediate pressure main stop valve vacation valve element interface 20 again and manages temporarily
21 one end, one end of the 3rd interim pipe 21 in the other end connection outlet pipe device of the 3rd interim pipe 21；
Described outlet duct apparatus be included in the 3rd interim pipe 21 the other end be sequentially connected hot arc target plate device 22,
Four interim pipes 23, deafener 24.
Further, described superheater 1 is provided with several, and superheater outlet collection vapour is respectively equipped with each superheater 1
Header.
Further, a described low-temperature reheater 9 is provided with a low-temperature reheater collection vapour header.
Further, described secondary low-temperature reheater 17 is provided with secondary low-temperature reheater collection vapour header.
Referring to Fig. 1, during work, the flow process for only being worked by first stage blow pipe system is：It is followed successively by startup separator, at different levels
Superheater, superheater outlet collection vapour header, main steam line, supertension main inlet throttle-stop valve, manage temporarily, face chongmen, the 3rd interim pipe, target
Plate device, interim pipe, deafener, finally enter air.
Referring to Fig. 2, during work, the flow process for being worked by first stage and second stage blow pipe system simultaneously is：It is followed successively by and opens
Flow separator, superheater at different levels, superheater outlet collection vapour header, main steam line, supertension main inlet throttle-stop valve, manage temporarily, face chongmen,
Cold reheat pipeline, low-temperature reheater → time high temperature reheating pipeline → high-pressure main throttle valve, the second interim pipe, a middle pressure
Shunt valve, the secondary cold reheat pipeline for being provided with interim pipe granulating device, secondary low-temperature reheater, secondary high-temperature reheating pipeline, in
Pressure main inlet throttle-stop valve, the 3rd interim pipe, target plate device, interim pipe, deafener, finally enter air.
This utility model can realize the function that blowpipe is individually carried out to boiler superheater at different levels, main steam line, while
Also possess to boiler superheater at different levels, reheater, main steam line, reheaing steam pipe association system blowpipe function；Pass through
Direction to facing first elbow after chongmen switches, you can realize first stage, the switching of two-stage system, and the stage that reduces turns
The construction amount of resuming work between alternatively, according to the Practical Project engineering time, has saved 4 day time than conventional blow pipe system；Typically
Purging not comprising bypath system in blow pipe system, and it is more tight to consider in this utility model that steam turbine building interior conduit is arranged
Gather, blowpipe pipe diameter is larger, pipeline after middle side valve is introduced into blow pipe system, it is to avoid blowpipe pipe arrangement is difficult to ask
Topic.Due to the original bypath system pipeline of effectively utilizes in system, the measuring and calculating of Jing Practical Project pipelines consumption, 12CrlMoVG can be saved
Material steel alloy about 7.5t.
Claims (4)
1. a kind of 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage, it is characterised in that：Blow including the first stage
Guard system and second stage blow pipe system；
Described first stage blow pipe system is included in the port of export of superheater (1) and connects supertension using main steam line (2)
Main inlet throttle-stop valve (3), the one end of supertension main inlet throttle-stop valve (3) using the interim pipe (5) of supertension main inlet throttle-stop valve vacation valve element interface (4) connection, institute
The interim pipe (5) stated is provided with and faces chongmen (6), is faced in chongmen (6) switching connection second stage blow pipe system using described
One end of 3rd interim pipe (21) in one end of cold reheat pipeline (8) or connection outlet pipe device；
Described second stage blow pipe system is included in the other end of a cold reheat pipeline (8) and connects a low-temperature reheater
(9) import, the outlet of a low-temperature reheater (9) connect high-pressure main throttle valve (11) using high temperature reheating pipeline (10),
High-pressure main throttle valve (11) is sequentially connected the second interim pipe (13), intermediate pressure by-pass pipe again using high-pressure main throttle valve vacation valve element interface (12)
(14) one end, the other end of intermediate pressure by-pass pipe (14) adopt secondary cold reheat pipeline (15) connecting secondary low-temperature reheater
(17) import, described secondary cold reheat pipeline (15) are provided with interim pipe granulating device (16), and described secondary low temperature is again
The outlet of hot device (17) is adopted again using secondary high-temperature reheating pipeline (18) connection intermediate pressure main stop valve (19), intermediate pressure main stop valve (19)
One end of the 3rd interim pipe (21) of intermediate pressure main stop valve vacation valve element interface (20) connection, the other end of the 3rd interim pipe (21) connect
One end of the 3rd interim pipe (21) in mouth pipe device；
Described outlet duct apparatus for the other end that is included in the 3rd interim pipe (21) be sequentially connected hot arc target plate device (22), the
Four interim pipes (23), deafener (24).
2. 1000MW double reheat power generation sets boiler as claimed in claim 1 blowpipe switched system stage by stage, it is characterised in that：Institute
The superheater (1) stated is provided with several, and superheater outlet collection vapour header is respectively equipped with each superheater (1).
3. 1000MW double reheat power generation sets boiler as claimed in claim 1 blowpipe switched system stage by stage, it is characterised in that：Institute
The low-temperature reheater (9) stated is provided with a low-temperature reheater collection vapour header.
4. 1000MW double reheat power generation sets boiler as claimed in claim 1 blowpipe switched system stage by stage, it is characterised in that：Institute
The secondary low-temperature reheater (17) stated is provided with secondary low-temperature reheater collection vapour header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621053861.7U CN206056385U (en) | 2016-09-13 | 2016-09-13 | 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621053861.7U CN206056385U (en) | 2016-09-13 | 2016-09-13 | 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206056385U true CN206056385U (en) | 2017-03-29 |
Family
ID=58371272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621053861.7U Expired - Fee Related CN206056385U (en) | 2016-09-13 | 2016-09-13 | 1000MW double reheat power generation sets boiler blowpipe switched system stage by stage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206056385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202056A (en) * | 2018-03-08 | 2018-06-26 | 华北电力科学研究院有限责任公司 | The blowpipe temporary system and control method of three discard heat boilers |
-
2016
- 2016-09-13 CN CN201621053861.7U patent/CN206056385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202056A (en) * | 2018-03-08 | 2018-06-26 | 华北电力科学研究院有限责任公司 | The blowpipe temporary system and control method of three discard heat boilers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20210913 |