CN209277954U - A kind of starter of steam turbine - Google Patents
A kind of starter of steam turbine Download PDFInfo
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- CN209277954U CN209277954U CN201920012774.4U CN201920012774U CN209277954U CN 209277954 U CN209277954 U CN 209277954U CN 201920012774 U CN201920012774 U CN 201920012774U CN 209277954 U CN209277954 U CN 209277954U
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- steam
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- steam turbine
- heat source
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Abstract
The utility model discloses a kind of starters of steam turbine, including heat source accommodation device, steam generator and the steam pipework for being connected to steam turbine, convey heat source by heat source adjuster between the heat source accommodation device and the steam generator.The steam turbine includes hiigh pressure stage, medium pressure grade and low-pressure stage, three passes sequentially through piping connection gas transmission, the output end of the steam generator generator is equipped with steam thermal detector, it is at different levels in the steam turbine to be equipped with corresponding rotor thermal detector and cylinder body thermal detector, check-valves is equipped on the pipeline that the hiigh pressure stage, medium pressure grade and the low-pressure stage connect each other.The drawbacks of the utility model can reduce the waiting time, and vapor (steam) temperature rate of climb in warm is slower than the prior art by low-pressure stage and medium pressure grade output acting in preheating time, overcome local heating's too fast generation.
Description
Technical field
The utility model relates to electricity generation system fields, and in particular to a kind of starter of steam turbine.
Background technique
It is more more and more universal in environmental protection purpose fuel gas generation now, it is generated electricity by refuse gasification or gas energy
The discharge amount for facilitating the dust particle in reduction power plant flue gas, advantageously reduces atmosphere pollution.Present steam turbine is most
Multiple stage of turbines are divided into, such as conventional hiigh pressure stage, medium pressure grade and low-pressure stage.It is steam during steam turbine system operation
Turbine conveys the steam generated in a vapor generator and expands the steam in the steam turbine.In such case
Under, thermal energy is converted to mechanical energy, and the mechanical energy is for driving customer, such as driven generator.And steam is in saturation state
Lower pressure is substantially directly proportional to temperature, and temperature more high pressure is stronger, therefore the size of pressure can be judged by vapor (steam) temperature.
To steam turbine system in thermal starting since steam heat is to steam turbine each section heating time difference, steam
When temperature needed for being heated to above respective turbine grade, the steam that can just generate in the stage of turbine flows.Especially hiigh pressure stage
When being filled with high steam again after cooling, since induction part vapor (steam) temperature is high, local heating is fast, and other parts heat transfer compared with
Slowly, it is easy to cause rotor and cylinder that biggish deformation occurs, or even enables and generate extruding therebetween, cause equipment damage.
If using gradually being heated after being passed through using steam, although can prolong the service life when temperature reaches hiigh pressure stage
Required temperature-time is longer, this leads to the waiting time of undesirable length.Therefore it requires further improvement in vapor (steam) temperature
Steam turbine can be run before temperature needed for reaching hiigh pressure stage, and shorten the pre-add thermal starting time
Utility model content
The purpose of this utility model is to provide a kind of starters of steam turbine, to solve the steaming of prior art high temperature
Part quick heating, causes each space temperature variation larger when vapour heats steam turbine, leads to the components dilatancy such as rotor, shortens and steams
Steam turbine service life, and the longer problem of preheating time is expended if slowing down heating speed.
The starter of the steam turbine, including heat source accommodation device, steam generator and it is connected to steam turbine
Steam pipework, the steam turbine includes hiigh pressure stage, medium pressure grade and low-pressure stage, and three passes sequentially through piping connection gas transmission, institute
The output end for stating steam generator generator is equipped with steam thermal detector, at different levels in the steam turbine to be equipped with corresponding rotor and survey
Warm device and cylinder body thermal detector, this starter further include steam heater, and the output end of the steam generator is connected respectively to
Steam input pipe and steam reheating pipe, the steam input pipe are connected respectively to the hiigh pressure stage, medium pressure grade and described low
The air inlet arbitrarily downgraded, the steam reheating pipe are connected to the air inlet of the steam heater, the outlet of the steam heater
Mouth is connected respectively to the air inlet of the hiigh pressure stage and medium pressure grade by reheated steam efferent duct, the steam input pipe with
The reheated steam efferent duct all has branch pipes at different levels corresponding with corresponding air inlet, is designed with switch valve on branch pipes at different levels.
Preferably, the output end of the steam heater is equipped with reheating thermal detector.
Preferably, non-return is equipped on the pipeline that the hiigh pressure stage, medium pressure grade and the low-pressure stage connect each other
Valve.
Preferably, the supervisor of the steam input pipe is equipped with the first steam control valve, and the steam reheating pipe is equipped with
Steam-flow meter is equipped at second steam control valve, first steam control valve and second steam control valve.
Preferably, heat source is conveyed by heat source adjuster between the heat source accommodation device and the steam generator.
The utility model has the advantage that through the present apparatus steaming for first passing through reach low-pressure stage required temperature on startup
Vapour preheats entire steam turbine, while the low-pressure stage by inputting steam starts conveying acting, reduces waiting in this way
The time of steam turbine preheating operation.Then steam is further heated by steam heater again and is output to medium pressure grade acting,
Power is further improved, when steam is heated to hiigh pressure stage required temperature by steam heater, can be done work by hiigh pressure stage,
At this moment can reach normal power, and before passing through the preheating hiigh pressure stage of steam can by high-temperature steam heating without
Generate the excessive temperature difference in each region.It is carried out just finally by the steam that hiigh pressure stage required temperature is fully achieved in steam generator output
Often operating.Preheating time can reduce the waiting time by low-pressure stage and medium pressure grade output acting in this way, and steam temperature
The drawbacks of degree rate of climb in warm is slower than the prior art, overcomes local heating's too fast generation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1；
Fig. 2 is the structural schematic diagram for starting controller in the utility model embodiment 2.
In above-mentioned attached drawing, 1, heat source accommodation device, 2, steam generator, 3, steam heater, 4, hiigh pressure stage, 5, middle pressure
Grade, 6, low-pressure stage, 7, generator, 8, steam reheating pipe, 9, steam input pipe, the 10, first steam control valve, the 11, second steam
Regulating valve, 12, reheated steam efferent duct, 13, switch valve, 14, check-valves.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present invention further detailed
Explanation, it is more complete, accurate to help those skilled in the art to have the design of the utility model of the utility model, technical solution
With deep understanding.
Embodiment 1:
As shown in Figure 1, the utility model provides a kind of starter of steam turbine, including heat source supply dress
It sets 1, steam generator 2 and is connected to the steam pipework of steam turbine, the heat source accommodation device 1 and the steam generator 2
Between by heat source adjuster convey heat source.
The steam turbine includes hiigh pressure stage 4, medium pressure grade 5 and low-pressure stage 6, coaxially connected common driven generator 7.High pressure
Grade 4, medium pressure grade 5 and 6 three of low-pressure stage pass sequentially through piping connection gas transmission, and the output end of 2 generator of steam generator is set
There is a steam thermal detector, it is at different levels in the steam turbine to be equipped with corresponding rotor thermal detector and cylinder body thermal detector, the hiigh pressure stage
4, check-valves 14 is equipped on the pipeline that medium pressure grade 5 and the low-pressure stage 6 connect each other.
This starter further includes steam heater 3, and the output end of the steam generator 2 is connected respectively to steam input
The output end of pipe 9 and steam reheating pipe 8, the steam heater 3 is equipped with reheating thermal detector.The steam input pipe 9 connects respectively
It is connected to the air inlet of the hiigh pressure stage 4, medium pressure grade 5 and the low-pressure stage 6, the steam reheating pipe 8 is connected to the steaming
The gas outlet of the air inlet of vapour heater 3, the steam heater 3 is connected respectively to the height by reheated steam efferent duct 12
The supervisor of the air inlet for 4 and the medium pressure grade 5 of arbitrarily downgrading, the steam input pipe 9 is equipped with the first steam control valve 10, the steaming
Vapour reheating pipe 8 is equipped with the second steam control valve 11, at first steam control valve 10 and second steam control valve 11
It is equipped with steam-flow meter.The steam input pipe 9 and the reheated steam efferent duct 12 all have corresponding with corresponding air inlet
Branch pipes at different levels, be designed with switch valve 13 on branch pipes at different levels.
Above-mentioned steam thermal detector, rotor thermal detector, cylinder body thermal detector, reheating thermal detector and steam-flow meter conduct everywhere
Information collecting device sends signal to the console where operator, and console is grasped for showing data collected
Work person determines how the quantity of state for operating each stage of turbine of each executing agency to guarantee steam turbine according to data in security restriction
It is interior, it avoids the heating unevenness because generating when starting from leading to component deformation, and thus caused equipment damage, reduces maintenance cost
Improve equipment life.The executing agency includes the steam heater 3, the first steam control valve 10, the second steam control valve
11, the switch valve 13 and heat source adjuster on branch pipes at different levels.
The specific starting method of the starter includes the following steps:
1) before, steam turbine prepares starting, steam generator 2 heats steam, when steam reaches 6 required temperature of low-pressure stage,
It opens steam input pipe 9 to supply to hiigh pressure stage 4, medium pressure grade 5 and low-pressure stage 6 simultaneously, steam can drive 6 rotor of low-pressure stage at this time
Movement, the valve for opening simultaneously steam reheating pipe 8 are passed through steam, and steam is further heated in steam heater 3；
2), after the vapor (steam) temperature that steam heater 3 exports reaches 5 required temperature of medium pressure grade, reheated steam output is opened
5 branch pipe of medium pressure grade of pipe 12 supplies to medium pressure grade 5 and drives, simultaneously closes off 6 branch pipe of low-pressure stage of steam input pipe 9, medium pressure grade 5
The steam of output enters the driving of low-pressure stage 6；
3), after the vapor (steam) temperature that steam generator 2 exports also reaches 5 required temperature of medium pressure grade, it is defeated to close reheated steam
5 branch pipe of medium pressure grade of outlet pipe 12 opens simultaneously 4 branch pipe of hiigh pressure stage of reheated steam efferent duct 12, supplies to hiigh pressure stage 4；
4), after the vapor (steam) temperature that steam heater 3 exports reaches 4 required temperature of hiigh pressure stage, steam off input pipe 9
5 branch pipe of medium pressure grade, opens simultaneously 4 branch pipe of hiigh pressure stage of reheated steam efferent duct 12, and the steam that hiigh pressure stage 4 exports enters medium pressure grade
5 drivings；
5), after the vapor (steam) temperature that steam generator 2 exports also reaches 4 required temperature of hiigh pressure stage, it is defeated to close reheated steam
4 branch pipe of hiigh pressure stage and reheated steam efferent duct 12 of outlet pipe 12, simultaneously close off steam heater 3, steam turbine has started at this time
At.
During paying attention to this, operator must pay attention to rotor thermometric at any time in the state that steam turbine parts at different levels are heated
The temperature difference of the temperature change of device and cylinder body thermal detector and the two record, is steamed with this by the first steam control valve 10 and described second
Steam control valve 11 adjusts the flow of steam in steam input pipe 9 and steam reheating pipe 8 respectively, while by steam thermal detector and again
Hot thermal detector temperature change adjustment heat source supply heat number and steam heater 3 operating status.Prevent steam turbine
It heats up into steam too fast or too slow.
Embodiment 2:
As shown in Fig. 2, comparing embodiment 1, the present embodiment no longer voluntarily judges manual manipulation by operator, and uses and open
Movement controller carries out automatically controlling each executing agency of device according to the limitation data and calculation formula that are previously set, higher
Effect is reliable.
The starting controller includes:
State quantity prediction module, is connected with information collecting device, the status number at different levels for the steam turbine according to acquisition
According to the predicted value for calculating quantity of state in future；
Switching judging module, for being judged whether according to the predicted value of above-mentioned quantity of state and each executing agency's state of record
Reach corresponding steam transport status switching to require, and switching signal is issued according to judging result；
Adjustment signal module, for selecting corresponding executing agency to issue executable adjustment after receiving switching signal
Signal；
The executing agency includes the steam heater 3, the first steam control valve 10, the second steam control valve 11, each
Switch valve 13 and heat source adjuster on grade branch pipe.
For the present embodiment, the starting method of steam turbine includes the following steps:
1) before, steam turbine prepares starting, steam generator 2 heats steam, when steam reaches 6 required temperature of low-pressure stage,
It opens steam input pipe 9 to supply to hiigh pressure stage 4, medium pressure grade 5 and low-pressure stage 6 simultaneously, steam can drive 6 rotor of low-pressure stage at this time
Movement, the valve for opening simultaneously steam reheating pipe 8 are passed through steam, and steam is further heated in steam heater 3；
2), after the vapor (steam) temperature that steam heater 3 exports reaches 5 required temperature of medium pressure grade, reheated steam output is opened
5 branch pipe of medium pressure grade of pipe 12 supplies to medium pressure grade 5 and drives, simultaneously closes off 6 branch pipe of low-pressure stage of steam input pipe 9, medium pressure grade 5
The steam of output enters the driving of low-pressure stage 6；
3), after the vapor (steam) temperature that steam generator 2 exports also reaches 5 required temperature of medium pressure grade, it is defeated to close reheated steam
5 branch pipe of medium pressure grade of outlet pipe 12 opens simultaneously 4 branch pipe of hiigh pressure stage of reheated steam efferent duct 12, supplies to hiigh pressure stage 4；
4), after the vapor (steam) temperature that steam heater 3 exports reaches 4 required temperature of hiigh pressure stage, steam off input pipe 9
5 branch pipe of medium pressure grade, opens simultaneously 4 branch pipe of hiigh pressure stage of reheated steam efferent duct 12, and the steam that hiigh pressure stage 4 exports enters medium pressure grade
5 drivings；
5), after the vapor (steam) temperature that steam generator 2 exports also reaches 4 required temperature of hiigh pressure stage, it is defeated to close reheated steam
4 branch pipe of hiigh pressure stage and reheated steam efferent duct 12 of outlet pipe 12, simultaneously close off steam heater 3, steam turbine has started at this time
At.
Operator must pay attention to rotor thermal detector and cylinder body thermometric at any time in the state that steam turbine parts at different levels are heated
The temperature change of device and the temperature difference of the two record, are divided with this by the first steam control valve 10 and second steam control valve 11
Not Tiao Jie in steam input pipe 9 and steam reheating pipe 8 steam flow, while passing through the temperature of steam thermal detector and reheating thermal detector
Degree variation adjustment heat source supply heat number and steam heater 3 operating status.
The adjustment of the switching of each pipeline switch and vapor (steam) temperature and flow passes through starting controller and completes in above-mentioned steps,
The starting controller passes through rotor thermal detector, cylinder body thermal detector, steam-flow meter, steam thermal detector and the acquisition of reheating thermal detector
Corresponding temperature and steam flow data, by calculating steam turbine status data at different levels, judging protecting in above-mentioned steps
It demonstrate,proves and whether needs to adjust executing agency under the limitation of steam turbine service life, control the flow and temperature of steam in branch pipes at different levels
Degree calculates corresponding data category and adjustment numerical value if necessary, issues the switching signal comprising above-mentioned data, the tune
Entire signal module selects corresponding executing agency to issue its executable adjustment signal according to switching signal, and executing agency is according to tune
Entire signal, which is adjusted, prevents each quantity of state in steam turbine from exceeding safe range.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as using changing for the various unsubstantialities that the utility model method concept and technical solution carry out
Into, or it is not improved the utility model conception and technical scheme are directly applied into other occasions, the utility model protect
Within the scope of shield.
Claims (5)
1. a kind of starter of steam turbine, including heat source accommodation device (1), steam generator (2) and it is connected to vapor wheel
The steam pipework of machine, the steam turbine include hiigh pressure stage (4), medium pressure grade (5) and low-pressure stage (6), and three passes sequentially through pipeline
Connect gas transmission, the output end of steam generator (2) generator is equipped with steam thermal detector, at different levels in the steam turbine to be all provided with
There are corresponding rotor thermal detector and cylinder body thermal detector, it is characterised in that: further include steam heater (3), the steam generator
(2) output end is connected respectively to steam input pipe (9) and steam reheating pipe (8), and the steam input pipe (9) is connected respectively to
The hiigh pressure stage (4), medium pressure grade (5) and the low-pressure stage (6) air inlet, the steam reheating pipe (8) is connected to institute
The air inlet of steam heater (3) is stated, the gas outlet of the steam heater (3) is connected respectively by reheated steam efferent duct (12)
It is connected to the air inlet of the hiigh pressure stage (4) and medium pressure grade (5), the steam input pipe (9) and reheated steam output
Pipe (12) all has branch pipes at different levels corresponding with corresponding air inlet, and switch valve (13) are designed on branch pipes at different levels.
2. a kind of starter of steam turbine according to claim 1, it is characterised in that: the steam heater (3)
Output end be equipped with reheating thermal detector.
3. a kind of starter of steam turbine according to claim 1, it is characterised in that: the hiigh pressure stage (4), described
Check-valves (14) are equipped on the pipeline that medium pressure grade (5) and the low-pressure stage (6) connect each other.
4. a kind of starter of steam turbine according to claim 1, it is characterised in that: the steam input pipe (9)
Supervisor be equipped with the first steam control valve (10), the steam reheating pipe (8) be equipped with the second steam control valve (11), it is described
Steam-flow meter is equipped at first steam control valve (10) and second steam control valve (11).
5. a kind of starter of steam turbine according to claim 1, it is characterised in that: the heat source accommodation device
(1) heat source is conveyed by heat source adjuster between the steam generator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012774.4U CN209277954U (en) | 2019-01-04 | 2019-01-04 | A kind of starter of steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012774.4U CN209277954U (en) | 2019-01-04 | 2019-01-04 | A kind of starter of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209277954U true CN209277954U (en) | 2019-08-20 |
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ID=67605090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920012774.4U Active CN209277954U (en) | 2019-01-04 | 2019-01-04 | A kind of starter of steam turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458231A (en) * | 2019-01-04 | 2019-03-12 | 安徽誉特双节能技术有限公司 | A kind of starter of steam turbine and starting method |
-
2019
- 2019-01-04 CN CN201920012774.4U patent/CN209277954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458231A (en) * | 2019-01-04 | 2019-03-12 | 安徽誉特双节能技术有限公司 | A kind of starter of steam turbine and starting method |
| CN109458231B (en) * | 2019-01-04 | 2024-02-09 | 安徽誉特双节能技术有限公司 | Starting device and starting method of steam turbine |
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