CN207962604U - A kind of steam-supplying system suitable for firepower power station boiler - Google Patents
A kind of steam-supplying system suitable for firepower power station boiler Download PDFInfo
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- CN207962604U CN207962604U CN201820336211.6U CN201820336211U CN207962604U CN 207962604 U CN207962604 U CN 207962604U CN 201820336211 U CN201820336211 U CN 201820336211U CN 207962604 U CN207962604 U CN 207962604U
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Abstract
The utility model discloses a kind of steam-supplying system suitable for firepower power station boiler, including feed pump, steam trap, evaporator and circulating pump, the water outlet of feed pump is connected with the water side entrance of steam trap, the water side outlet of steam trap is connected with the entrance of circulating pump, the outlet of circulating pump is connected with evaporator, the outlet of evaporator is connected with the vapour side entrance of steam trap, and evaporator is set at boiler dry bottom hopper water-cooling wall.Firepower power station boiler steam-supplying system provided by the utility model, when unit needs underload or high load capacity is run, by adjusting feed pump inlet water temperature or circulation pump power in real time, and then the caloric receptivity of evaporator is increased or reduced, it is adjusted to be realized to steam trap steam inside, meets the needs of factory steam, for compared with the prior art, this steam-supplying system can carry out multistage adjusting, meet the service condition of unit underload or high load capacity, while meet factory steam demand.
Description
Technical field
The utility model is related to thermal power generating technology fields, more particularly to a kind of steam supply system suitable for firepower power station boiler
System.
Background technology
With the development of social economy and industrial technology, mechanical device processing and manufacturing required precision is increasingly improved.
Increasingly increase for the development need and peak-valley difference of cooperation renewable energy power generation online, Thermal generation unit ginseng
It is greatly improved with the number of peak regulation and the requirement to its quality, grid requirements power plant promotes the peak modulation capacity of unit, but portion
There are industrial steam supply demands that is larger and stablizing for point power plant.
If conventional thermal power unit need to realize the technology path for stablizing industrial steam supply and include mainly：Steam turbine grade steam extraction steam supply
(common to take out steam extraction for middle row's steam extraction, high row's steam extraction, three), main steam steam extraction pressure and temperature reducing, reheated steam steam extraction pressure and temperature reducing etc.,
However above scheme can cause the tune that unit can not meet power grid to unit while ensureing larger and stable industrial steam supply
Peak requirement.Therefore, exist between the industrial steam supply demand and frequent peak regulation demand stablized and centainly conflict.
Therefore, how to provide a kind of stabilization can carry out real-time steam supply adjusting to boiler, ensure the normal steam supply of boiler, together
When can ensure firepower power station boiler steam-supplying system that steam supply demand avoids conflicting between peak load regulation, be art technology
Personnel's technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of steam-supplying system suitable for firepower power station boiler, can ensure boiler just
Normal steam supply, while can ensure that steam supply demand avoids conflicting between peak regulation, improve station boiler steam supply efficiency and stabilization
Property, avoid conflicting between peak load regulation.
In order to solve the above technical problems, the utility model provides a kind of steam-supplying system suitable for firepower power station boiler, packet
Feed pump, steam trap, evaporator and circulating pump are included, the water outlet of the feed pump and the water side of the steam trap enter
Mouthful be connected, the water side outlet of the steam trap is connected with the entrance of the circulating pump, the outlet of the circulating pump and
The evaporator is connected, and the outlet of the evaporator is connected with the vapour side entrance of the steam trap, and the evaporation
Device is set at boiler dry bottom hopper water-cooling wall.
Preferably, further include superheater, the entrance of the superheater is connected with the vapour side outlet of the steam trap,
The outlet of the superheater is connected with steam supply end is waited for.
Preferably, the evaporator is arranged in parallel with the boiler dry bottom hopper water-cooling wall, and be equipped between the two it is default away from
From.
Preferably, the steam trap is provided with temperature measuring equipment.
Preferably, the steam trap is additionally provided with measuring moisture device.
Preferably, it is provided with flow control valve in the outlet of the circulating pump.
Preferably, it is provided with pressure gauge on the water outlet of the feed pump.
Steam-supplying system provided by the utility model suitable for firepower power station boiler includes mainly feed pump, steam point
From device, evaporator and circulating pump, the water outlet of feed pump is connected with the water side entrance of steam trap, the water of steam trap
Side outlet is connected with the entrance of circulating pump, and the outlet of circulating pump is connected with evaporator, and the outlet of evaporator is detached with steam
The vapour side entrance of device is connected, and evaporator is set at boiler dry bottom hopper water-cooling wall.Firepower power station provided by the utility model
The steam-supplying system of boiler, when unit needs underload or high load capacity is run, by the work for adjusting circulating pump in real time
Efficiency increases the caloric receptivity for either reducing the inflow to evaporator and then increasing or reduce evaporator, or adjusts feed pump
Inlet water temperature adjusts to be realized to steam trap steam inside, meets the needs of factory steam, comes compared with the prior art
It says, this steam-supplying system can carry out multistage adjusting, meet the operating status condition of unit underload or high load capacity, meet simultaneously
Factory steam demand.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of overall structure diagram of specific implementation mode provided by the utility model.
Wherein, in Fig. 1：
Feed pump -1, steam trap -2, evaporator -3, superheater -4, circulating pump -5.
Specific implementation mode
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
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of overall structure diagram of specific implementation mode provided by the utility model, figure
Middle arrow indicates steam flow direction.
In a kind of specific implementation mode provided by the utility model, it is suitable for the steam-supplying system master of firepower power station boiler
To include feed pump 1, steam trap 2, evaporator 3 and circulating pump 5, the water outlet of feed pump 1 and the water side of steam trap 2
Entrance is connected, and the water side outlet of steam trap 2 is connected with the entrance of circulating pump 5, outlet and the evaporator 3 of circulating pump 5
It is connected, the outlet of evaporator 3 is connected with the vapour side entrance of steam trap 2, and evaporator 3 is set to boiler dry bottom hopper water
At cold wall.
Wherein, the water outlet of feed pump 1 is connected with the water side entrance of steam trap 2, and feed pump 1 draws external source
It is directed inside steam trap 2, carries out next step optimization, it should be noted that the outlet of feed pump 1 has to pass through steam trap
2, after being mixed with former high-temperature steam medium, it on the one hand can be lifted into the water temperature of evaporator 3, on the other hand, it is ensured that steam point
It is the saturated vapor under corresponding pressure from the superheated steam medium entered after device 2, the water supply after steam trap 2 is followed by forcing
Ring pump 5, into evaporator 3, this is inevitable technical process can not be arranged since power pressure is necessarily Sub-critical Parameter
For DC mode；2 water side outlet of steam trap is connected with the entrance of circulating pump 5；The outlet of circulating pump 5 and 3 phase of evaporator
Connection；The outlet of evaporator 3 is connected with the vapour side entrance of steam trap 2, and evaporator 3 is set to boiler dry bottom hopper water cooling
At wall.
Specifically, in actual moving process, this steam supply regulating system can carry out two kinds of situations by live truth
Under steam supply adjust.
It is appropriate to reduce boiler fired coal input amount when unit is needed in the relatively underrun of off-design operating mode, it can drop
Low Boiler Steam evaporation capacity, the corresponding steam turbine that reduces are contributed so that unit electric load reduces, since furnace combustion zone temperature drops
Low, exhaust gas volumn is reduced so that 3 thermic load of evaporator reduces, at this point, by promoting 1 inlet water temperature of feed pump, even if evaporator 3
Caloric receptivity be less than design value, the steam parameter of 3 output of evaporator can also keep stable, while increase by 5 power of circulating pump, suitably
The caloric receptivity for improving evaporator 3 makes quantity of steam caused by performing low-load running of machine set reduce effect and offsets, tie up by above-mentioned measure
Steam quantum of output is held, that is, ensures that the outlet parameter design value of evaporator 3 is close, more heats can be brought into steam trap
2, it is further ensured that the workability of steam in steam trap 2, above-mentioned operational process is in the steam raising that ensure that evaporator 3
While amount, it can be further reduced water-cooling wall caloric receptivity, to reduce main steam flow, realize that unit reduces electric load operation.
When unit needs the higher load operation in off-design operating mode, increases boiler oil input amount, pot can be improved
Stove evaporation capacity, the corresponding steam turbine that improves are contributed so that and unit electric load increases, since furnace combustion zone temperature increases, exhaust gas volumn
Increase so that 3 thermic load of evaporator increases, and by reducing by 1 inlet water temperature of feed pump, is set even if the caloric receptivity of evaporator 3 is higher than
The steam parameter of evaluation, 3 output of evaporator can also keep stable, while the operation power by reducing circulating pump 5, reduce evaporation
The caloric receptivity of device 3 because 5 power of circulating pump reduce, 3 inflow of evaporator reduce, so in evaporator 3 water caloric receptivity
Reduce, the quantity of steam of 3 output of evaporator also reduces, and increasing effect with quantity of steam caused by unit heavy-duty service offsets, and ties up
Steam quantum of output is held, that is, ensures that the outlet parameter design value of evaporator 3 is close, less heat can be brought into steam trap
2, it is further ensured that the workability of steam in steam trap 2, above-mentioned operational process reduce the steam of evaporator 3 in guarantee
It while evaporation capacity, is equivalent to and further increases water-cooling wall caloric receptivity, to increase main steam flow, it is negative to realize that unit reduces electricity
Lotus runs.
In order to which can preferably to provide parameter steady for the steam-supplying system that optimizes in above-described embodiment suitable for firepower power station boiler
Fixed industrial steam supply, this steam-supplying system further include superheater 4, and the entrance of superheater 4 is connected with the vapour side outlet of steam trap 2
Logical, the outlet of superheater 4 is connected with steam supply end is waited for；Evaporator 3 is arranged in parallel with boiler dry bottom hopper water-cooling wall, and between the two
Equipped with pre-determined distance.Superheater 4 can install a detection device, for detecting the parameter of industrial steam, be evaporated by designing
The heating surface area of device 3 and superheater 4 is appraised and decided 1 outlet pressure of required feed pump and required steam supply flow according to steam supply parameter, is made
The system of obtaining can be in safe and stable operation under design conditions, and provides the industrial steam supply of parameter stability.It should be noted that evaporator
3 is adjustable with the heating surface area of superheater 4, is determined according to user's field condition, is not limited herein.
Further, steam trap 2 is provided with temperature measuring equipment；Steam trap 2 is additionally provided with measuring moisture device.Steam
The design of 2 temperature measuring equipment of separator and measuring moisture device, can be such that steam trap 2 is detected in real time to industrial steam,
The adjusting of 1 outlet pressure of feed pump and required steam supply flow is carried out by detection data so that system can pacify under design conditions
Full stable operation, and the industrial steam supply of parameter stability is provided.
In addition, being provided with flow control valve in the outlet of circulating pump 5；It is provided with pressure gauge on the water outlet of feed pump 1.It follows
The design of flow control valve and the design of pressure gauge on feed pump 1 on ring pump 5 can be systems according to 2 temperature of steam trap
The detection data of degree and humidity, carries out 5 own traffic of circulating pump to increase or reduce adjusting, meanwhile, feed pump 1 can also be right
The confluent of itself carries out increasing or reducing adjusting, is further ensured that 2 steam inside of steam trap meets factory steam standard.
In conclusion the steam-supplying system suitable for firepower power station boiler that is provided of the present embodiment include mainly feed pump,
Steam trap, evaporator and circulating pump, the water outlet of feed pump are connected with the water side entrance of steam trap, steam separation
The water side outlet of device is connected with the entrance of circulating pump, and the outlet of circulating pump is connected with evaporator, the outlet of evaporator and water
The vapour side entrance of vapour separator is connected, and evaporator is set at boiler dry bottom hopper water-cooling wall.Fire provided by the utility model
The steam-supplying system of power station boiler, when unit needs underload or high load capacity is run, by adjusting circulating pump in real time
Working efficiency, increase the caloric receptivity for either reducing to the inflow of evaporator and then increase or reduce evaporator, or adjust
Feed pump inlet water temperature adjusts to be realized to steam trap steam inside, meets the needs of factory steam, compared to existing
For technology, this steam-supplying system can carry out multistage adjusting, meet the operating status condition of unit underload or high load capacity, together
When meet factory steam demand.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest range consistent with features of novelty.
Claims (7)
1. a kind of steam-supplying system suitable for firepower power station boiler, which is characterized in that including feed pump (1), steam trap
(2), evaporator (3) and circulating pump (5), the water outlet of the feed pump (1) and the water side entrance phase of the steam trap (2)
Connection, the water side outlet of the steam trap (2) are connected with the entrance of the circulating pump (5), and circulating pump (5) go out
Mouth is connected with the evaporator (3), and the outlet of the evaporator (3) is connected with the vapour side entrance of the steam trap (2)
It is logical, and the evaporator (3) is set at boiler dry bottom hopper water-cooling wall.
2. steam-supplying system according to claim 1, which is characterized in that further include superheater (4), the superheater (4)
Entrance is connected with the vapour side outlet of the steam trap (2), and the outlet of the superheater (4) is connected with steam supply end is waited for.
3. steam-supplying system according to claim 2, which is characterized in that the evaporator (3) and the boiler dry bottom hopper water
Cold wall is arranged in parallel, and is equipped with pre-determined distance between the two.
4. according to the steam-supplying system described in claim 1-3 any one, which is characterized in that steam trap (2) setting
There is temperature measuring equipment.
5. steam-supplying system according to claim 4, which is characterized in that the steam trap (2) is additionally provided with measuring moisture
Device.
6. steam-supplying system according to claim 5, which is characterized in that be provided with flow in the outlet of the circulating pump (5)
Regulating valve.
7. steam-supplying system according to claim 5, which is characterized in that be provided with pressure on the water outlet of the feed pump (1)
Power meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820336211.6U CN207962604U (en) | 2018-03-12 | 2018-03-12 | A kind of steam-supplying system suitable for firepower power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820336211.6U CN207962604U (en) | 2018-03-12 | 2018-03-12 | A kind of steam-supplying system suitable for firepower power station boiler |
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| Publication Number | Publication Date |
|---|---|
| CN207962604U true CN207962604U (en) | 2018-10-12 |
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ID=63742770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820336211.6U Active CN207962604U (en) | 2018-03-12 | 2018-03-12 | A kind of steam-supplying system suitable for firepower power station boiler |
Country Status (1)
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| CN (1) | CN207962604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431643A (en) * | 2021-08-04 | 2021-09-24 | 西安热工研究院有限公司 | Low-pressure industrial steam supply system combining condensate system and boiler |
-
2018
- 2018-03-12 CN CN201820336211.6U patent/CN207962604U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431643A (en) * | 2021-08-04 | 2021-09-24 | 西安热工研究院有限公司 | Low-pressure industrial steam supply system combining condensate system and boiler |
| CN113431643B (en) * | 2021-08-04 | 2022-08-02 | 西安热工研究院有限公司 | Low-pressure industrial steam supply system combining condensate system and boiler |
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