CN207179623U - A kind of boiler start-up system - Google Patents
A kind of boiler start-up system Download PDFInfo
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- CN207179623U CN207179623U CN201720712942.1U CN201720712942U CN207179623U CN 207179623 U CN207179623 U CN 207179623U CN 201720712942 U CN201720712942 U CN 201720712942U CN 207179623 U CN207179623 U CN 207179623U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 191
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 39
- 239000000498 cooling water Substances 0.000 claims description 25
- 238000001223 reverse osmosis Methods 0.000 claims description 24
- 238000000605 extraction Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 11
- 239000004071 soot Substances 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 238000003303 reheating Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 2
- 238000011033 desalting Methods 0.000 claims 1
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model provides a kind of boiler start-up system, including drum, separator storage tank, high-pressure heater, heat exchanger, counter-infiltration system, filter, oxygen-eliminating device, auxiliary vapour header and rhone；Make full use of the saturation water of steam and HTHP caused by itself unit, and start it is hydrophobic boiler is sent to by multiple circulating-heating again, and form water circulation, make full use of water resource.
Description
Technical Field
The utility model relates to a thermal power field especially relates to a boiler starting system.
Background
The power station unit needs a certain amount of external steam from the auxiliary steam header at the initial starting stage, and the external steam is provided by an adjacent machine or a starting boiler. In order to save energy, the external steam source mainly comes from the adjacent machine, but the steam used in the starting stage of the unit is relatively large, and the phenomenon that auxiliary steam of the adjacent machine is insufficient may occur. And the adoption of the starting boiler for steam supply can cause a great amount of waste of energy and resources.
Before the once-through boiler of the power station is in a dry state, the separator is started to separate out a part of saturated water, the saturated water is stored in a water storage tank of the separator, and the separated water is called start drainage. Currently there are two main ways to initiate hydrophobic drainage. Firstly, the boiler water circulating pump is utilized to recover the start-up hydrophobic water to the inlet of the boiler economizer. This method mainly has the following disadvantages: the quality requirement of the furnace water circulating pump is high, the furnace water circulating pump mainly depends on an inlet, the maintenance is troublesome, the requirement of the furnace water circulating pump on the quality of cooling water is high, and the water treatment cost and the cost are increased. And secondly, the starting drain is discharged to the atmospheric flash tank, and after the flash tank is subjected to flash tank expansion, steam can be discharged into the air, so that waste of water quantity and heat is caused.
In addition, the water cleaned by the boiler is not recycled and is wasted.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a boiler starting system, the highly compressed saturated water of steam and high temperature that make full use of self unit produced to the drainage of starting is sent to the boiler again through manifold cycles heating, and has formed hydrologic cycle, make full use of water resource.
The technical scheme of the utility model is that: a boiler starting system comprises a steam drum, a separator water storage tank, a high-pressure heater, a heat exchanger, a reverse osmosis system, a filtering device, a deaerator, an auxiliary steam header and a drainage tank; wherein,
an outlet of the water storage tank of the separator is connected with an inlet of a pressure flash tank, steam of the pressure flash tank is connected with an atmospheric discharge valve through a first steam outlet, hot water of the pressure flash tank is connected with a water inlet of a high-pressure heater through a first water outlet, hot water of the pressure flash tank is connected with an inlet of a water drainage tank through a second water outlet, steam of the pressure flash tank is connected with a sixth inlet of an auxiliary steam header through a second steam outlet, a first outlet of the auxiliary steam header is connected with a steam side inlet of the high-pressure heater, a second outlet of the auxiliary steam header is connected with a steam inlet of a deaerator, a water outlet of the high-pressure heater is connected with a water inlet of the deaerator, deaerated water of the deaerator is respectively connected with a water inlet of the high-pressure heater and a water inlet of a boiler through a; the boiler water outlet is connected with the heat exchanger to exchange heat with clean cooling water entering the heat exchanger and coming from an external clean cooling water pipeline, the cooled boiler water goes out and is desalted through a reverse osmosis system and is heated by impurities entering a water inlet of a high-pressure heater, and the clean cooling water passing through the heat exchanger enters a deaerator through a water inlet of the deaerator.
The water outlet of the boiler is firstly filtered to remove iron-containing impurities and then enters the heat exchanger. The impurity removal can be carried out in one step, and the pressure of the reverse osmosis system is reduced.
The filter device is also directly connected with the inlet of the reverse osmosis system, and a first temperature control valve interlocked with the water temperature of the water outlet of the filter device is arranged on a connecting pipeline of the filter device and the inlet of the reverse osmosis system. The water temperature entering the reverse osmosis system is prevented from being too high, and the performance of the reverse osmosis system is prevented from being influenced. And a second temperature control valve is arranged on a connecting pipeline of the filtering device and the heat exchanger, so that the problem that the heat exchange effect is poor due to low temperature of water entering the heat exchanger is solved.
The external clean cooling water pipeline is also directly connected with a water inlet of the deaerator, and a third temperature control valve interlocked with the water temperature of boiler outlet water cooled by the heat exchanger is arranged on a pipeline leading to the heat exchanger from the external clean cooling water pipeline. The water quantity entering the heat exchanger for cooling is conveniently adjusted, and the water directly enters the deaerator when heat exchange is not needed.
The first water level regulating valve of the pressure flash tank is arranged on a pipeline of a water inlet of the high-pressure heater, which is connected with a first water outlet of the pressure flash tank, a second water level regulating valve of the pressure flash tank is arranged on an inlet pipeline of the water drainage tank, a second outlet of the auxiliary steam header is provided with a steam supply regulating valve of the deaerator on a pipeline of a steam inlet of the deaerator, a first outlet of the auxiliary steam header is connected with a steam supply regulating valve of the high-pressure heater on a pipeline of a steam inlet of the high-pressure heater, a water outlet of the high-pressure heater is connected with a water inlet pipeline of the deaerator and is provided with a water level regulating valve of the high-pressure heater, a first water level regulating valve of the deaerator is arranged on a pipeline of a water inlet of the high-pressure heater, and a second water level regulating.
Also comprises a boiler reheater, a first cooling pressure reducing valve, a soot blowing steam main pipe of the boiler body and a second cooling pressure reducing valve, wherein,
the outlet of the boiler reheater is connected to the inlet of the soot blowing steam main pipe of the boiler body through a first cooling depressurization valve, and the outlet of the soot blowing steam main pipe of the boiler body is connected to the first inlet of the auxiliary steam header through a second cooling depressurization valve.
The system also comprises a boiler side steam user, a steam turbine side steam user, a four-section steam extraction steam inlet pipeline, a cold section reheating steam inlet pipeline and an external steam inlet pipeline; wherein,
the boiler side steam user is connected with a third outlet of the auxiliary steam header; the steam engine side steam user is connected with a fourth outlet of the auxiliary steam header; the second to fourth inlets of the auxiliary steam header are respectively connected to the four-section steam extraction steam inlet pipeline, the cold section reheated steam inlet pipeline and the external steam inlet pipeline.
The four-section steam extraction steam inlet pipeline, the cold section reheating steam inlet pipeline and the auxiliary steam header are connected through a bidirectional regulating valve. Therefore, the steam supply relationship between the four-section steam extraction and cold-section reheated steam and the auxiliary steam header can be conveniently converted, and steam is better utilized.
The utility model has the advantages that: the method has the advantages that the start-up drainage of the once-through boiler and the common hot water are recovered, a boiler water circulating pump is not adopted, and the problem of the boiler water circulating pump in recovering the start-up drainage is solved; the expansion device is not communicated with the atmosphere, so that resource waste is avoided, the saturated water and the saturated steam generated after expansion and depressurization also have certain pressure, and the water and the steam can be respectively recycled to the high-pressure heater and the auxiliary steam header by utilizing the pressure; the drain of the water storage tank of the separator is connected with the inlet of the pressure flash tank through a drain outlet, the common water of the water storage tank of the separator is connected with the water inlet of the high-pressure heater through a common water outlet, the water outlet of the high-pressure heater is connected with the water inlet of the deaerator through an outlet, the water inlet of the deaerator is connected with the water inlet of the high-pressure heater, so that the water is heated for multiple times and then sent to the boiler, and the boiler feed water is further heated; the water obtained by the pressure flash tank is not directly sent to the deaerator, is heated by the high-pressure heater and then sent to the deaerator, so that the boiler feed water is further heated, the feed water temperature is obviously improved, the boiler economizer, the evaporation heating surface and the hearth temperature are further improved, the boiler start combustion is facilitated, the insufficient fuel combustion amount is reduced, the energy is saved, the possibility of the system blockage caused by the insufficiently combusted fuel is reduced, and the device operation is influenced; the boiler reheater supplies steam to the boiler auxiliary steam header, reduces the dependency of the unit starting on external steam, shortens the time of using the external steam, and also saves the operating cost.
The water that washs the boiler is owing to hot, should not directly get into reverse osmosis system, carries out the heat transfer through the heat exchanger with the clean cooling water that will get into the oxygen-eliminating device earlier, then gets into reverse osmosis system again and gets rid of impurity, and the water through getting rid of impurity gets into high pressure heater and further heats, then gets into the oxygen-eliminating device, gets into the boiler through the deoxidization, washs the boiler pipeline, forms whole hydrologic cycle.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1 is a boiler reheater, 2 is a first temperature and pressure reducing valve, 3 is a main soot blowing steam pipe of a boiler body, 4 is a second temperature and pressure reducing valve, 5 is a boiler side auxiliary steam header, 6 is a boiler side steam user, 7 is a steam engine side steam user, 8 is a four-section steam extraction steam inlet pipe, 9 is a cold section reheating steam inlet pipe, 10 is an external steam inlet pipe, 11 is a steam drum, 12 is a separator water storage tank, 13 is a deaerator first water level regulating valve, 14 is an atmospheric discharge valve, 15 is a high-pressure heater steam supply regulating valve, 16 is a deaerator steam supply regulating valve, 17 is a pressure expander, 18 is a high-pressure heater, 19 is a deaerator, 20 is a pressure expander second water level regulating valve, 21 is a pressure expander first water level regulating valve, 22 is a water drainage tank, 23 is a two-way regulating valve, 24 is a high-pressure heater water level regulating valve, 25 is a pressure expander pressure regulating valve, 26 is a boiler water inlet, 27 is a steam drum stop valve, 28 is a deaerator second water level regulating valve, 29 is a boiler water outlet, 30 is a filtering device, 31 is a heat exchanger, 32 is a reverse osmosis system, 33 is an external clean cooling water pipeline, 34 is a first temperature control valve, 35 is a second temperature control valve, and 36 is a third temperature control valve.
Detailed Description
As shown in fig. 1, a boiler starting system comprises a steam drum 11, a separator water storage tank 12, a pressure flash tank 17, a high-pressure heater 18, a deaerator 19, an auxiliary steam header 5, a water discharge tank 22, a heat exchanger 31, a reverse osmosis system 32 and a filtering device 30; wherein,
an outlet in the separator water storage tank 12 is connected with an inlet of a pressure flash tank 17, steam of the pressure flash tank 17 is connected with an atmospheric discharge valve 14 through a first steam outlet, hot water of the pressure flash tank 17 is connected with a water inlet of a high-pressure heater 18 through a first water outlet, hot water of the pressure flash tank 17 is connected with an inlet of a water discharge tank 22 through a second water outlet, steam of the pressure flash tank 17 is connected with a sixth inlet of an auxiliary steam header 5 through a second steam outlet, a first outlet of the auxiliary steam header 5 is connected with a steam inlet of the high-pressure heater 18, a second outlet of the auxiliary steam header 5 is connected with a steam inlet of a deaerator 19, a water outlet of the high-pressure heater 18 is connected with a water inlet of the deaerator 19, deaerated water of the deaerator 19 is respectively connected with a water inlet of the high-pressure heater 18 and a boiler water inlet 26 through a water outlet, and a steam pocket; the boiler water outlet 29 is connected with a heat exchanger 31 to exchange heat with clean cooling water from an external clean cooling water pipeline 33 connected with the heat exchanger 31, the cleaning water for cleaning the boiler, which comes out from the cooled boiler water outlet 29, enters a reverse osmosis system, is desalted and heated from a water inlet of the high-pressure heater 18 through the reverse osmosis system 32, and the clean cooling water subjected to heat exchange through the heat exchanger 31 enters the deaerator 19 through a water inlet of the deaerator 19. The clean cooling water comes from an external clean cooling water pipe 33.
The water at the water outlet 29 of the boiler firstly enters a filtering device 30 to remove iron-containing impurities, and then enters a heat exchanger 31. The impurity removal can be carried out in one step, and the pressure of the reverse osmosis system is reduced.
The filtering device 30 is also directly connected with the inlet of the reverse osmosis system 32, and a first temperature control valve 34 interlocked with the water temperature of the water outlet of the filtering device is arranged on a connecting pipeline of the filtering device 30 and the inlet of the reverse osmosis system 32. The water temperature entering the reverse osmosis system is prevented from being too high, and the performance of the reverse osmosis system is prevented from being influenced. The second temperature control valve 35 is arranged on the connecting pipeline between the filtering device 30 and the heat exchanger 31, so that the problem that the heat exchange effect is poor due to low temperature of water entering the heat exchanger 31 is avoided.
The external clean cooling water pipeline 33 is also directly connected with a water inlet of the deaerator 19, and a third temperature control valve 36 interlocked with the water temperature of boiler outlet water cooled by the heat exchanger is arranged on a pipeline of the external clean cooling water pipeline 33 to the heat exchanger 31. The water quantity entering the heat exchanger 31 for cooling is convenient to adjust, and the water directly enters the deaerator 19 when heat exchange is not needed.
A first water level regulating valve 21 of the pressure flash tank is arranged on a pipeline of a first water outlet of the pressure flash tank 17 connected with a water inlet of the high-pressure heater 18, a second water level regulating valve 20 of the pressure flash tank is arranged on an inlet pipeline of a second water outlet of the pressure flash tank 17 connected with a water drainage tank 22, a deaerator steam supply regulating valve 16 is arranged on a pipeline of a second outlet of the auxiliary steam header 5 connected with a steam inlet of the deaerator 19, a high-pressure heater steam supply regulating valve 15 is arranged on a pipeline of a first outlet of the auxiliary steam header 5 connected with a steam inlet of the high-pressure heater 18, a high-pressure heater water level regulating valve 24 is arranged on a pipeline of a water inlet of the deaerator 19 connected with an outlet of the high-pressure heater 18, a first deaerator water level regulating valve 13 is arranged on a pipeline of a water inlet of the deaerator connected with the high-pressure heater, a second deaerat, when the boiler is completely started, the deaerator second water level regulating valve 28 is closed, so that resource waste is prevented. A steam pocket stop valve 27 is arranged between the steam pocket 11 and the auxiliary steam header 5 of the boiler, so that the steam supply of the steam pocket to the auxiliary steam header 5 is conveniently controlled.
Also comprises a boiler reheater 1, a first temperature and pressure reducing valve 2, a soot blowing steam main pipe 3 of the boiler body and a second temperature and pressure reducing valve 4, wherein,
an outlet of the boiler reheater 1 is connected to an inlet of a soot blowing steam main pipe 3 of a boiler body through a first cooling and depressurization valve 2, and an outlet of the soot blowing steam main pipe 3 of the boiler body is connected to a first inlet of an auxiliary steam header 5 through a second cooling and depressurization valve 4.
The system also comprises a boiler side steam user 6, a steam engine side steam user 7, a four-section steam extraction steam inlet pipeline 8, a cold section reheating steam inlet pipeline 9 and an external steam inlet pipeline 10; wherein,
the boiler side steam user 6 is connected with a third outlet of the auxiliary steam header 5; the steam user 7 at the steam turbine side is connected with a fourth outlet of the auxiliary steam header; the second to fourth inlets of the auxiliary steam header 5 are respectively connected to a four-stage steam extraction steam inlet pipeline 8, a cold-stage reheated steam inlet pipeline 9 and an external steam inlet pipeline 10.
The four-section steam extraction steam inlet pipeline 8, the cold section reheating steam inlet pipeline 9 and the auxiliary steam header 5 are connected through a bidirectional regulating valve 23.
A boiler start-up method comprising the steps of:
1) in the initial starting stage of the boiler, firstly supplying steam to the auxiliary steam header through an external steam inlet pipeline, then supplying steam to the auxiliary steam header through a four-section steam extraction inlet pipeline, a cold-section hot steam inlet pipeline and a steam drum, and taking steam from a boiler side steam user and a steam turbine side steam user auxiliary steam header;
2) in the washing stage of the boiler, draining water discharged from a water storage tank of the separator enters a pressure flash tank, if the water quality is qualified, water in the pressure flash tank is discharged to a high-pressure heater through a first water level regulating valve of the pressure flash tank for heating, and if the water quality is unqualified, water in the pressure flash tank is discharged to a water discharging tank through a second water level regulating valve of the pressure flash tank; the heated water in the high-pressure heater is sent to a water inlet of a deaerator, a water outlet of the deaerator is connected with a water inlet of the boiler and the high-pressure heater, and the heated water is heated for multiple times through the high-pressure heater and the deaerator and then sent to the water inlet of the boiler, so that the temperature of the water inlet of the boiler is increased; when cleaning is started, external clean cooling water directly leads to the deaerator, when cleaning water which cleans a boiler comes out and enters the heat exchanger for heat exchange, the clean cooling water leads to the temperature control valve of the heat exchanger to be opened, goes to the heat exchanger for heat exchange, and then enters the deaerator. The boiler water outlet is connected with the heat exchanger and is connected with clean cooling water in an external clean cooling water pipeline of the heat exchanger for heat exchange, the cleaning water for cleaning the boiler, which comes out from the cooled boiler water outlet, enters the reverse osmosis system, is desalted and heated from the water inlet of the high-pressure heater through the reverse osmosis system, and the clean cooling water subjected to heat exchange through the heat exchanger enters the deaerator through the water inlet of the deaerator. And removing impurities by using the cleaning water for cleaning the boiler, deoxidizing and re-cleaning the boiler and the unit pipeline.
And controlling the pressure flash tank to operate at a normal water level through the first water level regulating valve of the pressure flash tank or the second water level regulating valve of the pressure flash tank.
3) After the boiler is ignited, draining water discharged from a water storage tank of the separator enters a pressure flash tank, some steam is generated, if the quality of the steam is qualified, the steam in the pressure flash tank is discharged to an auxiliary steam header, if the quality of the steam is unqualified, the steam in the pressure flash tank is discharged to the atmosphere through an atmospheric discharge valve, and in the process, the pressure of the pressure flash tank is regulated by a pressure flash tank pressure regulating valve or the atmospheric discharge valve to be slightly higher than the pressure of a high-pressure heater, so that the water in the pressure flash tank can be smoothly discharged to the high-pressure heater;
4) when the pressure of a boiler reheater is higher than the external steam pressure, steam in the boiler reheater is guided into a main soot blowing steam pipe of a boiler body through a first cooling pressure reducing valve, then is guided into an auxiliary steam header through a second cooling pressure reducing valve, steam supply from the boiler reheater to the auxiliary steam header on the side of the boiler is gradually increased, steam supply from a four-section steam extraction steam supply pipeline, a cold-section reheated steam supply pipeline and a steam drum to the auxiliary steam header is reduced, the use amount of the external steam is reduced, when sufficient steam supply from the boiler reheater to the four-section steam extraction steam supply pipeline and the cold-section reheated steam supply pipeline is achieved, the auxiliary steam header supplies steam to the four-section steam extraction steam supply pipeline and the cold-section reheated steam supply pipeline through a two-way regulating valve, and the external steam is stopped being used;
5) in the starting process of the boiler, after external steam is stopped, reheating steam is used for supplying steam to the auxiliary steam header so as to reduce the possibility that the steam is sent to a condenser through a bypass and increase the steam supply from the auxiliary steam header at the side to a deaerator and the steam side of a high-pressure heater, so that the water supply temperature is increased and the starting speed of a unit is accelerated;
6) after the boiler changes the dry state operation, the pressure flash vessel is kept apart the operation, after the pressure of four sections extraction steam or cold section reheat steam is higher than the pressure of assisting vapour header, the steam of assisting vapour header switches into four sections extraction steam or cold section reheat steam and supplies vapour, blows the steam supply of female pipe to assisting vapour header and is amputated from the boiler body.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (8)
1. A boiler starting system, characterized by: the system comprises a steam drum, a separator water storage tank, a high-pressure heater, a heat exchanger, a reverse osmosis system, a filtering device, a deaerator, an auxiliary steam header and a drainage tank; wherein,
an outlet of the water storage tank of the separator is connected with an inlet of a pressure flash tank, steam of the pressure flash tank is connected with an atmospheric discharge valve through a first steam outlet, hot water of the pressure flash tank is connected with a water inlet of a high-pressure heater through a first water outlet, hot water of the pressure flash tank is connected with an inlet of a water drainage tank through a second water outlet, steam of the pressure flash tank is connected with a sixth inlet of an auxiliary steam header through a second steam outlet, a first outlet of the auxiliary steam header is connected with a steam inlet of the high-pressure heater, a second outlet of the auxiliary steam header is connected with a steam inlet of a deaerator, a water outlet of the high-pressure heater is connected with a water inlet of the deaerator, deaerated water of the deaerator is respectively connected with a water inlet of the high-pressure heater and a water inlet of a boiler through a water; the boiler water outlet is connected with the heat exchanger to exchange heat with clean cooling water from an external clean cooling water pipeline entering the heat exchanger, the cleaning water coming out of the cooled boiler water outlet enters the deaerator through the water inlet of the reverse osmosis system for desalting and impurities from the high-pressure heater for heating, and the clean cooling water passing through the heat exchanger enters the deaerator through the water inlet of the deaerator.
2. The boiler start-up system of claim 1, wherein: the water outlet of the boiler is firstly filtered to remove iron-containing impurities and then enters the heat exchanger.
3. The boiler starting system according to claim 2, wherein: the pipeline that filter equipment and heat exchanger are connected still connects reverse osmosis system's import, is provided with the temperature control valve of the temperature interlocking of filter equipment's delivery port on the connecting tube of filter equipment and reverse osmosis system's import, is provided with the second temperature control valve on the connecting tube of filter equipment and heat exchanger.
4. The boiler start-up system of claim 1, wherein: the external clean cooling water pipeline is also directly connected with a water inlet of the deaerator, and a third temperature control valve interlocked with the water temperature of boiler outlet water cooled by the heat exchanger is arranged on a pipeline leading to the heat exchanger from the external clean cooling water pipeline.
5. The boiler start-up system of claim 1, wherein: the first water level regulating valve of the pressure flash tank is arranged on a pipeline of a water inlet of the high-pressure heater, which is connected with a first water outlet of the pressure flash tank, a second water level regulating valve of the pressure flash tank is arranged on an inlet pipe of a second water outlet of the pressure flash tank, a steam supply regulating valve of the deaerator is arranged on a pipeline of a steam inlet of a second outlet connection deaerator of the auxiliary steam header, a high-pressure heater steam supply regulating valve is arranged on a pipeline of a steam inlet of the high-pressure heater at the first outlet connection of the auxiliary steam header, a high-pressure heater water level regulating valve is arranged on a water inlet pipeline of the deaerator at the water outlet connection of the deaerator, the first water level regulating valve of the deaerator is arranged on a pipeline of a water inlet of the high-pressure heater at the water outlet connection of the deaerator.
6. The boiler start-up system of claim 1, wherein: also comprises a boiler reheater, a first cooling pressure reducing valve, a soot blowing steam main pipe of the boiler body and a second cooling pressure reducing valve, wherein,
the outlet of the boiler reheater is connected to the inlet of the soot blowing steam main pipe of the boiler body through a first cooling depressurization valve, and the outlet of the soot blowing steam main pipe of the boiler body is connected to the first inlet of the auxiliary steam header through a second cooling depressurization valve.
7. The boiler start-up system of claim 1, wherein: the system also comprises a boiler side steam user, a steam turbine side steam user, a four-section steam extraction steam inlet pipeline, a cold section reheating steam inlet pipeline and an external steam inlet pipeline; wherein,
the boiler side steam user is connected with a third outlet of the auxiliary steam header; the steam engine side steam user is connected with a fourth outlet of the auxiliary steam header; the second to fourth inlets of the auxiliary steam header are respectively connected to the four-section steam extraction steam inlet pipeline, the cold section reheated steam inlet pipeline and the external steam inlet pipeline.
8. The boiler starting system according to claim 7, wherein: the four-section steam extraction steam inlet pipeline, the cold section reheating steam inlet pipeline and the auxiliary steam header are connected through a bidirectional regulating valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720712942.1U CN207179623U (en) | 2017-06-19 | 2017-06-19 | A kind of boiler start-up system |
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| CN201720712942.1U CN207179623U (en) | 2017-06-19 | 2017-06-19 | A kind of boiler start-up system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870372A (en) * | 2018-06-29 | 2018-11-23 | 山东电力工程咨询院有限公司 | Once-through Boiler drained water recovery system and method based on high-low pressure hydrophobic development unit |
| CN112728525A (en) * | 2021-01-08 | 2021-04-30 | 大唐淮北发电厂 | Blowdown system of drum boiler |
| CN112944321A (en) * | 2021-04-02 | 2021-06-11 | 华北电力科学研究院有限责任公司 | System for increasing boiler feed water temperature during blow tube and method of use thereof |
| CN113446591A (en) * | 2021-07-19 | 2021-09-28 | 西安热工研究院有限公司 | Logic control and method of high-energy water recovery system adaptive to deep peak shaving |
| CN113446649A (en) * | 2021-07-30 | 2021-09-28 | 西安热工研究院有限公司 | Logic control system and method for high-energy water inlet regulating valve in double control modes |
| CN113896270A (en) * | 2021-11-09 | 2022-01-07 | 山东众智水务有限公司 | Integrative intelligent analytic deaerating plant of combined type |
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2017
- 2017-06-19 CN CN201720712942.1U patent/CN207179623U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870372A (en) * | 2018-06-29 | 2018-11-23 | 山东电力工程咨询院有限公司 | Once-through Boiler drained water recovery system and method based on high-low pressure hydrophobic development unit |
| CN108870372B (en) * | 2018-06-29 | 2022-01-21 | 山东电力工程咨询院有限公司 | Direct current furnace drainage recovery system and method based on high-low pressure drainage flash tank |
| CN112728525A (en) * | 2021-01-08 | 2021-04-30 | 大唐淮北发电厂 | Blowdown system of drum boiler |
| CN112944321A (en) * | 2021-04-02 | 2021-06-11 | 华北电力科学研究院有限责任公司 | System for increasing boiler feed water temperature during blow tube and method of use thereof |
| CN113446591A (en) * | 2021-07-19 | 2021-09-28 | 西安热工研究院有限公司 | Logic control and method of high-energy water recovery system adaptive to deep peak shaving |
| CN113446591B (en) * | 2021-07-19 | 2023-09-19 | 西安热工研究院有限公司 | Logic control and method of high-energy water recovery system adapting to deep peak shaving |
| CN113446649A (en) * | 2021-07-30 | 2021-09-28 | 西安热工研究院有限公司 | Logic control system and method for high-energy water inlet regulating valve in double control modes |
| CN113446649B (en) * | 2021-07-30 | 2022-09-09 | 西安热工研究院有限公司 | Logic control system and method of high-energy water inlet regulating valve in double control modes |
| CN113896270A (en) * | 2021-11-09 | 2022-01-07 | 山东众智水务有限公司 | Integrative intelligent analytic deaerating plant of combined type |
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