CN107152319A - A kind of adjacent machine steam of supercritical unit mutually helps system and method - Google Patents
A kind of adjacent machine steam of supercritical unit mutually helps system and method Download PDFInfo
- Publication number
- CN107152319A CN107152319A CN201710491040.4A CN201710491040A CN107152319A CN 107152319 A CN107152319 A CN 107152319A CN 201710491040 A CN201710491040 A CN 201710491040A CN 107152319 A CN107152319 A CN 107152319A
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- steam supply
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/165—Controlling means specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Mutually help system and method the invention discloses a kind of adjacent machine steam of supercritical unit, the wherein system includes interconnecting piping, its two ends be respectively communicated with two neighboring unit height take up it is cold again, realize that the steam of two neighboring unit machine is mutually helped；The height of each unit in two neighboring unit machine it is other and it is cold in addition between it is each a separation valve door is installed, produce and influence each other for avoiding steam supply and cold steam supply again by height respectively.
Description
Technical field
The invention belongs to thermal power generation unit field, more particularly to a kind of adjacent machine steam of supercritical unit mutually help system and its
Method.
Background technology
Supercritical unit cold start is a time length, consumes many, heavy-polluted process, need to pass through the hot punching of ignition of the boiler
Wash, rise the steps such as parameter, steam turbine red switch warming-up and guipure underload；Unit after overhaul also has many steam turbines, electrical test
Mesh needs to do.Whole start-up course not only expends substantial amounts of demineralized water, fuel, station service, artificial, and boiler is in for a long time
The insufficient state of burning, pollutant emission are more.
The problem of in order to solve unit cold start economy and the poor feature of environmental protection, existing two schemes are respectively：
The first scheme is added from cold draw gas again to adjacent machine #2 height, to heat feed temperature, realizes that boiler misfires i.e. complete
Into hot flushing work.The program has been widely adopted, and produces obvious economic benefit.
Second scheme is connected two units are cold again with liaison tube, can equally be reached by #2 height plus input
Misfire and carry out the purpose of hot flushing；In addition, can also be real by intermediate pressure cylinder start-up Turbo-generator Set using adjacent machine come vapour
Existing boiler, which misfires, completes start and part test work.But the program has what parameter was matched on steam turbine red switch is realized
Difficulty, lacks flexible regulating measure；And steam turbine red switch is to 3000r/min, the required cold amount of drawing gas again is often beyond boiler factory
Setting, can cause reheater overtemperature, so less use.
The principle of both schemes is all to extract the steam discharge after adjacent machine high pressure cylinder acting to support the cold start of unit, all
Startup and the consumption of materials of equipment are reduced, pollutant emission is reduced.But because the cold amount of drawing gas again is limited, it is impossible to meet needs more
The operating mode of many vapour amounts.
The content of the invention
In order to solve the deficiencies in the prior art, system is mutually helped the invention provides a kind of adjacent machine steam of supercritical unit, its
Cold steam again after high pressure cylinder acting can be mutually provided by the different operating of the system valve, between unit, also can mutually be carried
For the main steam after high-pressure bypass pressure and temperature reducing；And steam parameter is flexibly adjustable, steam supply amount is big.
A kind of adjacent machine steam of supercritical unit of the present invention mutually helps system, including：Interconnecting piping, its two ends are respectively communicated with phase
The height of adjacent two units take up it is cold again, realize that the steam of two neighboring unit machine is mutually helped；Each machine in two neighboring unit machine
The height of group it is other and it is cold in addition between it is each a separation valve door is installed, produce mutual shadow for avoiding steam supply and cold steam supply again by height respectively
Ring.
Further, a contact valve is also equipped with the interconnecting piping.Wherein, contact valve is used to adjust adjacent two
The size transmitted between individual unit between vapour amount；When not mutual steam supply between two neighboring unit, contact valve plays isolation
Effect.
Further, any unit in two neighboring unit is fitted with Gao Jia and oxygen-eliminating device.
Further, the oxygen-eliminating device is also connected with heater.The vapour side input that height adds lifts feed temperature to realize, matches somebody with somebody
Heated with the auxiliary vapour of oxygen-eliminating device, feed temperature can reach 190 DEG C of hot rinsing requirement or so.
Further, the high side is provided with high side valve door.
Wherein, high side valve door is used for adjusting the flow of flowing steam, temperature and pressure in height side.
Further, the separation valve door is manually-operated gate or electromagnetic valve.
Further, the contact valve is manually-operated gate or electromagnetic valve.
Further, the high side valve door is electromagnetic valve or the valve that surges.
Further, pressure sensor and temperature sensor, the pressure sensor are also equipped with the interconnecting piping
It is connected with temperature sensor with DCS, the DCS is connected with contact valve, separation valve door, high side valve door.
Present invention also offers the method for work that a kind of adjacent machine steam of supercritical unit mutually helps system.
A kind of adjacent machine steam of supercritical unit of the present invention mutually helps the method for work of system, including：
If a unit is to its another adjacent unit steam supply, a unit is steam supply unit, and another unit is
By steam turbine group；
When steam supply unit is to by steam turbine group cooling steam again, the separation valve door of contact valve and steam supply unit is opened,
The high side valve door of steam supply unit is closed, and the aperture of the separation valve door by adjusting steam supply unit, evaporation capacity for engine is adjusted by contact valve
Section；
When steam supply unit is closed, supplied to valve opening, the separation valve door of steam supply unit when being supplied main steam by steam turbine group, is got in touch with
Valve opening by the height of steam turbine group, evaporation capacity for engine valve regulated by the height of steam supply unit.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) it can mutually provide cold after high pressure cylinder acting by the different operating of system valve in the present invention, between unit
Steam, also can mutually provide the main steam after high-pressure bypass pressure and temperature reducing again；And steam parameter is flexibly adjustable, steam supply amount
Greatly.The unit of cold start can be made, in the case where boiler misfires produced vapor, rinsed using adjacent machine steam completion cold and hot,
Intermediate pressure cylinder start-up steam turbine, grid-connected on-load, carry station service, height plus rinse etc. work；It can also be carried for the peaking operation of unit
For flexible regulating measure.
(2) system of the invention saves substantial amounts of coal-fired, fuel oil loss.It is a large amount of to need ignition of the boiler produced vapor complete
Into project, with external vapour be complete, save fuel.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is that the adjacent machine steam of supercritical unit mutually helps system structure diagram.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
The principle of the program of the present invention is：Cold steam again after being done work by the use of high pressure cylinder uses vapour as unit starting is smaller
The steam supply of amount, such as hot flushing, low speed warming；Vapour is used by the use of the main steam after high-pressure bypass pressure and temperature reducing as unit starting is larger
The steam supply of amount, such as high speed warming-up, grid-connected on-load.
As shown in figure 1, a kind of adjacent machine steam of supercritical unit of the present invention mutually helps system, including：Interconnecting piping, its two ends
Be respectively communicated with two neighboring unit height take up it is cold again, realize that the steam of two neighboring unit machine is mutually helped；Two neighboring unit machine
In each unit height it is other and it is cold in addition between it is each separation valve door a V1 and V1' is installed, for avoiding by height steam supply respectively and cold
Again steam supply and produce and influence each other.
Wherein, a contact valve V2 is also equipped with the interconnecting piping.Wherein, contact valve is used to adjust two neighboring
The size transmitted between unit between vapour amount；When not mutual steam supply between two neighboring unit, contact valve plays isolation and made
With.
In one embodiment, any unit in two neighboring unit is fitted with Gao Jia and oxygen-eliminating device.
In another embodiment, the oxygen-eliminating device is also connected with heater.The vapour side input lifting feed temperature that height adds
Realize, be equipped with the auxiliary vapour heating of oxygen-eliminating device, feed temperature can reach 190 DEG C of hot rinsing requirement or so.
In another embodiment, high side valve door is installed on the high side.
Wherein, high side valve door is used for adjusting the flow of flowing steam, temperature and pressure in height side.
Wherein, the separation valve door is manually-operated gate or electromagnetic valve.
The contact valve is manually-operated gate or electromagnetic valve.
The high side valve door is electromagnetic valve or the valve that surges.
In another embodiment, pressure sensor and temperature sensor, the pressure are also equipped with the interconnecting piping
Sensor and temperature sensor are connected with DCS, and the DCS is connected with contact valve, separation valve door, high side valve door.
Because that only need to meet performing low-load running of machine set requirement, to reduce investment outlay, contact below pipeline through-current capacity 30%BMCR is i.e.
Can.Institute's increase pipeline and equipment material need to meet the design requirement of steam parameter behind height side.
The system of the present invention has further the advantage that：
(1) a large amount of demineralized waters are saved.Super critical boiler is under hygrometric state operating condition, the steam emptied by activation system
Amount is very big, after the program, reduces steam discharging loss.
(2) steam turbine red switch no longer needs the cooperation of boiler, it is to avoid coordination difficulty therebetween, and making red switch, this is answered
Miscellaneous and time-consuming work is more easily-controllable, more efficient.
(3) realize that station service is carried before ignition of the boiler, save the cost of outsourcing station service.
(4) thoroughly avoid the easy overtemperature of reheater dry combustion method after ignition of the boiler, be also easy to produce the problem of oxide skin comes off, protecting
Reheater, reduces the generation of solid particle erosion.
(5) after ignition of the boiler, fuel is burnt in the case of " hot blast, hot stove ", and oily coal multifuel combustion is maintained at without long-time
Or the combustion-supporting underload of plasma, inefficient operating mode, this greatly reduces the discharge of pollutant.
(6) use value by height is extended, in addition to servicing the machine, adjacent machine can be also serviced, be a kind of Expanding Unit Element System
Unit between bypath system.
(7) unit capacity is bigger, the number of starts is more, and the accumulation benefit of the program is higher.
The achievable function of the program of the present invention：
1 completes hot flushing work.The vapour side input added by #2 height lifts feed temperature to realize, is equipped with oxygen-eliminating device
Auxiliary vapour heating, feed temperature can reach 190 DEG C of hot rinsing requirement or so.
2 complete the flushing work of air cooling island of air cooling unit system.
3 complete steam turbine red switch work.Red switch, warming-up and the constant speed work of steam turbine are completed using Start-up Mode for Intermediate Pressure.
4 complete whole electrical tests before set grid-connections and realize grid-connected on-load.Depending on the situation of thrust bearing shoe valve temperature, intermediate pressure cylinder
Starting mode cut highest before cylinder can band 20% load.
5 complete auxiliary Power switching experiment.Realize that station service is carried before boiler ignition start subsidiary engine.
6 complete to all it is low plus, #2 height plus, #3 height plus trial throw and flushing work.It can greatly reduce after ignition of the boiler
Wash the silicon time.
7 improve the peaking performance of unit, and depth peak regulation can be achieved.
Present invention also offers the method for work that a kind of adjacent machine steam of supercritical unit mutually helps system.
Specifically, a kind of adjacent machine steam of supercritical unit of the invention mutually helps the method for work of system, including：
If a unit is to its another adjacent unit steam supply, a unit is steam supply unit, and another unit is
By steam turbine group；
When steam supply unit is to by steam turbine group cooling steam again, the separation valve door of contact valve and steam supply unit is opened,
The high side valve door of steam supply unit is closed, and the aperture of the separation valve door by adjusting steam supply unit, evaporation capacity for engine is adjusted by contact valve
Section；
When steam supply unit is closed, supplied to valve opening, the separation valve door of steam supply unit when being supplied main steam by steam turbine group, is got in touch with
Valve opening by the height of steam turbine group, evaporation capacity for engine valve regulated by the height of steam supply unit.
By #1 units in scheming to exemplified by #2 unit steam supplies, V1 is opened, V2 is opened, high side valve door is closed, and #1 units can be to #
2 unit coolings steam again, evaporation capacity for engine can be adjusted by V2；V1 is closed, V2 is opened, high other valve opening, and #1 units can be to #2
Unit is adjusted for the main steam after high-pressure bypass pressure and temperature reducing, evaporation capacity for engine by height.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (10)
1. a kind of adjacent machine steam of supercritical unit mutually helps system, it is characterised in that including：Interconnecting piping, its two ends are respectively communicated with
The height of two neighboring unit take up it is cold again, realize that the steam of two neighboring unit machine is mutually helped；It is each in two neighboring unit machine
The height of unit it is other and it is cold in addition between it is each a separation valve door is installed, produced mutually for avoiding steam supply and cold steam supply again by height respectively
Influence.
2. the adjacent machine steam of a kind of supercritical unit as claimed in claim 1 mutually helps system, it is characterised in that the interconnecting piping
On be also equipped with a contact valve.
3. the adjacent machine steam of a kind of supercritical unit as claimed in claim 1 mutually helps system, it is characterised in that two neighboring unit
In any unit be fitted with Gao Jia and oxygen-eliminating device.
4. the adjacent machine steam of a kind of supercritical unit as claimed in claim 3 mutually helps system, it is characterised in that the oxygen-eliminating device is also
It is connected with heater.
5. the adjacent machine steam of a kind of supercritical unit as claimed in claim 1 mutually helps system, it is characterised in that pacify on the high side
Equipped with high side valve door.
6. the adjacent machine steam of a kind of supercritical unit as claimed in claim 1 mutually helps system, it is characterised in that the separation valve door
For manually-operated gate or electromagnetic valve.
7. the adjacent machine steam of a kind of supercritical unit as claimed in claim 2 mutually helps system, it is characterised in that the contact valve
For manually-operated gate or electromagnetic valve.
8. the adjacent machine steam of a kind of supercritical unit as claimed in claim 2 mutually helps system, it is characterised in that the high side valve door
For electromagnetic valve or the valve that surges.
9. the adjacent machine steam of a kind of supercritical unit as described in claim 6 or 7 or 8 mutually helps system, it is characterised in that described mutual
Pressure sensor and temperature sensor are also equipped with union road, the pressure sensor and temperature sensor are connected with DCS,
The DCS is connected with contact valve；Or the DCS is connected with separation valve door；Or the DCS is connected with high side valve door.
10. a kind of adjacent machine steam of supercritical unit as described in claim 1-9 is any mutually helps the method for work of system, its feature
It is, including：
If a unit is to its another adjacent unit steam supply, a unit is steam supply unit, and another unit is by vapour
Unit；
When steam supply unit is to by steam turbine group cooling steam again, the separation valve door of contact valve and steam supply unit is opened, steam supply
The high side valve door of unit is closed, and the aperture of the separation valve door by adjusting steam supply unit, evaporation capacity for engine is adjusted by contact valve；
When steam supply unit by steam turbine group to when being supplied main steam, contact valve opening, the separation valve door of steam supply unit is closed, steam supply machine
The other valve opening of height of group, evaporation capacity for engine by steam supply unit the other valve regulated of height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491040.4A CN107152319B (en) | 2017-06-23 | 2017-06-23 | Supercritical unit neighbor steam mutual aid system and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491040.4A CN107152319B (en) | 2017-06-23 | 2017-06-23 | Supercritical unit neighbor steam mutual aid system and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107152319A true CN107152319A (en) | 2017-09-12 |
| CN107152319B CN107152319B (en) | 2023-06-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710491040.4A Active CN107152319B (en) | 2017-06-23 | 2017-06-23 | Supercritical unit neighbor steam mutual aid system and method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120023A (en) * | 2019-12-27 | 2020-05-08 | 华润电力湖北有限公司 | High-side pressure reducing valve inner leakage prevention protection structure and method |
| CN111336495A (en) * | 2020-02-26 | 2020-06-26 | 广东粤电靖海发电有限公司 | A kind of coal-fired boiler quick heater start method |
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| JP2012167571A (en) * | 2011-02-10 | 2012-09-06 | Toshiba Corp | Uniaxial combined cycle power generation plant, and method of operating the same |
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| CN106761980A (en) * | 2016-12-06 | 2017-05-31 | 北京国电龙源环保工程有限公司 | Organic amine desulfurizer steam-supplying system and method in fired power generating unit |
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| JP2000045713A (en) * | 1998-07-27 | 2000-02-15 | Toshiba Corp | Combined cycle generating plant |
| JP2012167571A (en) * | 2011-02-10 | 2012-09-06 | Toshiba Corp | Uniaxial combined cycle power generation plant, and method of operating the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111120023A (en) * | 2019-12-27 | 2020-05-08 | 华润电力湖北有限公司 | High-side pressure reducing valve inner leakage prevention protection structure and method |
| CN111336495A (en) * | 2020-02-26 | 2020-06-26 | 广东粤电靖海发电有限公司 | A kind of coal-fired boiler quick heater start method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107152319B (en) | 2023-06-02 |
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