CN208203372U - A kind of quick hot starting, hot start system of large capacity regulating units - Google Patents
A kind of quick hot starting, hot start system of large capacity regulating units Download PDFInfo
- Publication number
- CN208203372U CN208203372U CN201820488245.7U CN201820488245U CN208203372U CN 208203372 U CN208203372 U CN 208203372U CN 201820488245 U CN201820488245 U CN 201820488245U CN 208203372 U CN208203372 U CN 208203372U
- Authority
- CN
- China
- Prior art keywords
- steam
- pipeline
- auxiliary
- large capacity
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
A kind of quick hot starting, hot start system of large capacity regulating units, including boiler, steam turbine, condenser, generator；Main steam pipe road is also connected with auxiliary steam pipeline, for accessing from adjacent machine steam；It is provided with reject steam pipeline before the auxiliary steam pipeline access point of major steam line, is drawn for bypassing main steam, reject steam piping connection to turbine discharge pipeline；Solves boiler ignition start initial stage, initial steam parameter is low to be unable to satisfy positive Temperature Matching, waits the longer problem of initial steam ramp-up time, is realized the machine boiler and steam turbine respectively independent startup, is substantially reduced the starting time of unit.
Description
Technical field
The utility model belongs to thermal power plant thermoelectricity field, and in particular to a kind of large-sized unit quick start system.
Background technique
With the increasingly increase of China's electrical network capacity and power grid peak-valley difference, small-load generators peak modulation capacity, which has been unable to meet, to be needed
It asks, more and more high parameters, large capacity fired power generating unit or will participate in peak regulation.To guarantee the new energy such as wind-powered electricity generation, water power
Electricity generation grid-connecting, regulating units will face frequent start-stop, and therefore, regulating units start and stop speed determines the energy of its quick response load
Power.Since high parameter large sized unit heat insulation effect is preferable, cylinder temperature is higher when being again started up after compressor emergency shutdown, this will significantly
Increase that unit is hot, chance of very hot startup.Multiple stress-strain cycle is likely to occur to reduce rotor in start-up course
Danger brought by situation, when generally steam turbine being required to start, first order vapor (steam) temperature should be higher than that the cylinder for meeting hot starting, hot start
The positive Temperature Matching starting of temperature, i.e. steam turbine.
By taking certain domestic 350MW unit style unit as an example, after shutting down natural cooling 10h, about 380 DEG C of high intermediate pressure cylinder temperature, 20h
Afterwards, cylinder temperature is still at 340 DEG C or so.Under this kind of temperature levels, main steam temperature is lower than cylinder temperature, crosses significantly negative temperature
Matching will will cause cold shock, while generation phenomena such as may cause excessive owning consumption and the insufficient degree of superheat, and then influence machine
The group service life.In addition, starting to meet positive Temperature Matching, boiler ignition start to steam turbine red switch waits the steam temperature rise time
It will greatly prolong, to greatly delay the total time of unit starting.For this purpose, unit style unit is hot or very hot startup mistake
Cheng Zhong while how solving positive temperature matching, shortens the starting time as critical issue.
Utility model content
The purpose of this utility model is to provide a kind of systems for realizing the quick hot starting, hot start of large capacity regulating units.
A kind of quick hot starting, hot start system of large capacity regulating units, including boiler, steam turbine, condenser, generator；Boiler
Steam turbine, turbine discharge piping connection to condenser are connected by major steam line, steam turbine connects driven generator；It is special
Sign is: main steam pipe road is also connected with auxiliary steam pipeline, for accessing from adjacent machine steam；In the auxiliary of major steam line
It is provided with reject steam pipeline before helping steam pipework access point, is drawn for bypassing main steam, reject steam piping connection is extremely
Turbine discharge pipeline.
Further, main steam pipe road is equipped with high-pressure main throttle valve and timing steam gate, and high-pressure main throttle valve is located at reject steam
Between pipeline and auxiliary steam pipeline, timing steam gate is located at after auxiliary steam pipeline.
Further, air vent pipework road is equipped with electric gate valve, electric control valve.
Further, air vent pipework road is equipped with spray desuperheating device
Further, reject steam pipeline is equipped with electric gate valve.
Compared with prior art, the utility model has the beneficial effects that solve boiler ignition start initial stage, initial steam ginseng
Number it is low be unable to satisfy positive Temperature Matching, wait initial steam ramp-up time it is longer the problems such as, thus realize the machine boiler with
The respective independent startup of steam turbine, substantially reduces the starting time of unit.
Detailed description of the invention
Fig. 1 is a kind of quick hot starting, hot start system schematic of large capacity regulating units.
In figure: 1, boiler, 2, steam turbine, 3, condenser, 4, generator, 5, adjacent machine steam, V1, high-pressure main throttle valve, V2, tune
Restrictor, V3, V4, V6, electric gate valve, V5, electric control valve.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model patent seeks to solve this problem.
As shown in Figure 1, boiler 1 by major steam line connect steam turbine 2, turbine discharge piping connection to condenser 3,
Steam turbine connects driven generator 4；Main steam pipe road is also connected with auxiliary steam pipeline, for accessing from adjacent machine steam 5；
It is provided with reject steam pipeline before the auxiliary steam pipeline access point of major steam line, is drawn for bypassing main steam, it is other
Road steam pipework is connected to turbine discharge pipeline；Main steam pipe road is equipped with high-pressure main throttle valve V1 and timing steam gate V2, high pressure
Between reject steam pipeline and auxiliary steam pipeline, timing steam gate V2 is located at after air vent pipework main inlet throttle-stop valve V1；Auxiliary
Steam pipework is equipped with electric gate valve V4, electric gate valve V6, electric control valve V5；Air vent pipework road is equipped with spray desuperheating dress
It sets；Reject steam pipeline is equipped with electric gate valve V3.
During unit style regulating units sliding parameter hot starting, hot start, the steam into steam turbine is two bursts of vapour sources, i.e., newly
Steam and adjacent machine steam.Initial steam flows through high-pressure main throttle valve V1, timing steam gate V2 enters steam turbine, and adjacent machine steam passes through high pressure master
Auxiliary steam pipeline between porthole V1 and timing steam gate V2, flow through electric gate valve V4, electric control valve V5, electric gate valve V6,
After timing steam gate V2, into steam turbine.
Unit starting initial stage, initial steam temperature be lower than high pressure cylinder first order metal temperature, for coordinate unit starting parameter and
Flow shortens the starting time, extends steam turbine life-span, initial steam can not red switch steam turbine.At this point, electric gate valve V3, electric brake
Valve V4, electric control valve V5, electric gate valve V6, timing steam gate V2 are in opening state, close high-pressure main throttle valve V1, initial steam
Entire steam turbine is bypassed through reject steam pipeline, is directly discharged into condenser, adjacent machine steam enters in steam turbine, completes steam turbine
Start red switch work.
When initial steam temperature is identical as adjacent machine steam parameter before and after high-pressure main throttle valve V1, V3, V4, V5, V6 are closed, is opened
V1, V2 carry out vapour source switching, and initial steam enters steam turbine, boiler on-load, to complete the starting work of unit.
And using the spray desuperheating device and electric control valve V5 of air vent pipework road, complete adjacent machine vapor (steam) temperature
With the adjusting work of flow, its temperature is controlled at 320~535 DEG C, so that adjacent machine steam is just at a temperature of increasing different metal
The flexibility of Temperature Matching starting.
Finally, it should be noted that being not intended to limit the utility model the foregoing is merely the explanation of the utility model, to the greatest extent
The utility model is described in detail in pipe, for those skilled in the art, can still be remembered to aforementioned
The technical solution of load is modified or equivalent replacement of some of the technical features.All spirit in the utility model
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of quick hot starting, hot start system of large capacity regulating units, including boiler, steam turbine, condenser, generator；Boiler is logical
Major steam line connection steam turbine, turbine discharge piping connection to condenser are crossed, steam turbine connects driven generator；Its feature
Be: main steam pipe road is also connected with auxiliary steam pipeline, for accessing from adjacent machine steam；In the auxiliary of major steam line
It is provided with reject steam pipeline before steam pipework access point, is drawn for bypassing main steam, reject steam piping connection to vapour
Turbine discharge pipeline.
2. the quick hot starting, hot start system of a kind of large capacity regulating units according to claim 1, which is characterized in that main steam
Pipeline be equipped with high-pressure main throttle valve and timing steam gate, high-pressure main throttle valve between reject steam pipeline and auxiliary steam pipeline,
Timing steam gate is located at after auxiliary steam pipeline.
3. the quick hot starting, hot start system of a kind of large capacity regulating units according to claim 1, which is characterized in that auxiliary is steamed
Vapor pipeline is equipped with electric gate valve, electric control valve.
4. the quick hot starting, hot start system of a kind of large capacity regulating units according to claim 3, which is characterized in that auxiliary is steamed
Vapor pipeline is equipped with spray desuperheating device.
5. the quick hot starting, hot start system of a kind of large capacity regulating units according to claim 1, which is characterized in that bypass is steamed
Vapor pipeline is equipped with electric gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488245.7U CN208203372U (en) | 2018-04-08 | 2018-04-08 | A kind of quick hot starting, hot start system of large capacity regulating units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488245.7U CN208203372U (en) | 2018-04-08 | 2018-04-08 | A kind of quick hot starting, hot start system of large capacity regulating units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208203372U true CN208203372U (en) | 2018-12-07 |
Family
ID=64525436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820488245.7U Active CN208203372U (en) | 2018-04-08 | 2018-04-08 | A kind of quick hot starting, hot start system of large capacity regulating units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208203372U (en) |
-
2018
- 2018-04-08 CN CN201820488245.7U patent/CN208203372U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107859538B (en) | Combined heat and power generation system for condensing back heat supply and operation method thereof | |
| CN109990362B (en) | High-backpressure heat supply system of indirect air cooling unit and adjusting method | |
| CN206267896U (en) | Combined cycle two-shipper condensing-back pressure formula is drawn gas cogeneration system | |
| CN105605551A (en) | System and method for heating boiler feed water through steam turbine bypass steam | |
| CN106194297A (en) | The double branch road heating system of a kind of cogeneration turbine | |
| CN110701663A (en) | Injection type heat pump exhaust steam recovery heat supply mode and system based on complete thermoelectric decoupling | |
| CN109869786B (en) | Steam extraction and heat supply integrated system for power peak regulation of combined cycle unit and operation method of steam extraction and heat supply integrated system | |
| CN107542506B (en) | Cascade utilization system for extraction condensing back of steam turbine and application thereof | |
| CN206972325U (en) | A kind of small turbine vapour source automatically switches and regulating system | |
| CN108119200A (en) | A kind of new bottom type back pressure heat supply steam turbine and its operation method | |
| CN109855147A (en) | A kind of combined cycle power plant and its operation method coupled based on heat supply with power peak regulation | |
| CN110285470A (en) | Mating steam turbine heating plant and its operation method | |
| CN106949521A (en) | A kind of heat supply remodeling method for realizing the operation of turbine condenser high vacuum | |
| CN110671158A (en) | High-pressure cylinder air pre-warming and quick-cooling system and adjusting method thereof | |
| CN206190339U (en) | Two branch road heating system of cogeneration steam turbine | |
| CN208203372U (en) | A kind of quick hot starting, hot start system of large capacity regulating units | |
| CN215444170U (en) | Cold-section steam multistage utilization system for enhancing industrial steam supply capacity of once-through boiler | |
| CN206801628U (en) | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system | |
| CN109488396A (en) | Main pipe steam waste heat energy progressive solution cogeneration system device | |
| CN111706898B (en) | Method for improving heat supply capacity of unit after high-back-pressure heat supply transformation | |
| CN212431456U (en) | Open cooling water system of high-backpressure circulating water heat supply unit | |
| CN108180044B (en) | Air-water cooling combined operation steam turbine energy saving system | |
| CN113175361A (en) | High-pressure cylinder zero-output and reheat steam main pipe system connection and operation method | |
| CN207829963U (en) | A kind of thermal power plant's heating steam energy efficient utilizes system | |
| CN208252163U (en) | Turbo-generator Set novel energy-conserving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |