CN218469069U - Boiler desuperheating water system - Google Patents
Boiler desuperheating water system Download PDFInfo
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- CN218469069U CN218469069U CN202222685606.6U CN202222685606U CN218469069U CN 218469069 U CN218469069 U CN 218469069U CN 202222685606 U CN202222685606 U CN 202222685606U CN 218469069 U CN218469069 U CN 218469069U
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Abstract
The utility model discloses a boiler temperature reduction water system, including the main water supply system, economizer, steam pocket, one-level over heater and the second grade over heater that loop through the pipeline intercommunication, be connected with temperature reduction water system through the tee bend pipeline on the pipeline between one-level over heater and second grade over heater, main water supply system is including the feed pump and the stop valve that loop through the pipeline intercommunication, and the stop valve passes through pipeline intercommunication economizer, and temperature reduction water system adopts the water spray temperature reduction system who is provided with the force (forcing) pump alone. The utility model discloses a main water supply system and water spray cooling system control respectively, and convenient operation has cancelled the governing valve that main water supply got into the economizer, has saved power plant boiler construction initial investment, has reduced equipment operation energy consumption, has improved the economic nature of power plant.
Description
Technical Field
The utility model relates to a boiler technical field especially relates to a system that boiler desuperheating water set up force (forcing) pump alone.
Background
For a power station boiler, the control of the main steam temperature of the boiler is of great importance, the over-temperature of metal of a heating surface pipe can be caused by the high steam temperature, the safe operation of the boiler is influenced, and the reduction of the heat efficiency of a unit can be caused by the low steam temperature, so that the economical efficiency of the power station is influenced. In the actual operation of the boiler, fuel, load fluctuations and changes in the operating mode all lead to changes in the temperature of the main steam, so that the boiler is required to be provided with a steam regulating device to ensure that the steam temperature fluctuates within a reasonable range.
Water spray attemperation is widely used for steam temperature control of utility boilers as a common steam temperature regulation method. The water spraying and temperature reducing are realized by directly spraying water into steam, and the device has the advantages of high sensitivity and large temperature reducing range. Generally, boiler desuperheating water and boiler economizer inlet feed water are both from a boiler deoxygenation system, and are boosted to a certain required pressure by using the same set of water pump; in general, the pressure required by the desuperheating water is higher, so in order to meet the pressure requirement of the desuperheating water, a water pump needs to raise the feed water at the inlet of a boiler economizer to a higher pressure, then the feed water is decompressed to the required pressure through a regulating valve and then is supplied to the economizer. Especially for combined cycle power stations, under the low-load working condition, a large amount of temperature-reducing water is needed by a boiler, a temperature-reducing water system needs enough pressure difference, so that a main water supply regulating valve is needed for control, the process that boiler water flows through the water supply regulating valve is an energy loss process, the heat consumption of the system is increased, and the running economy of the boiler is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a boiler cooling water system.
The utility model adopts the following technical scheme:
the utility model provides a boiler desuperheating water system, is including the main water supply system, economizer, steam pocket, one-level over heater and the second grade over heater that loop through the pipeline intercommunication, is connected with desuperheating water system through the tee bend pipeline on the pipeline between one-level over heater and second grade over heater, main water supply system is including the feed pump and the stop valve that loop through the pipeline intercommunication, and the stop valve passes through pipeline intercommunication economizer, and desuperheating water system adopts the water spray desuperheating system who is provided with the force (forcing) pump alone.
Preferably, the water spraying temperature reduction system comprises a water spraying temperature reduction water pump, an adjusting valve and a water spraying temperature reducer which are sequentially communicated through a pipeline, and the water spraying temperature reducer is communicated on the pipeline between the primary superheater and the secondary superheater through a three-way pipeline.
Preferably, the regulating valve determines whether the boiler needs to be installed according to the amount of the reduced temperature water and the pressure under various working conditions of the boiler.
Preferably, the water-spraying temperature-reducing water pump is a plunger pump with high flow rate and high pressure.
Preferably, the water spray desuperheater controls the temperature of steam entering the secondary superheater.
The utility model has the advantages that: the utility model discloses a main water supply system and water spray cooling system control respectively, and convenient operation has cancelled the governing valve that main water supply got into the economizer, has saved power plant boiler construction initial investment, has reduced equipment operation energy consumption, has improved the economic nature of power plant.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure: 001-main water supply system; 002-spraying a water temperature reducing system; 1-a feed pump; 2-spraying a water temperature-reducing water pump; 3-adjusting the valve; 4-water spray desuperheater; 5-a stop valve; 6-a coal economizer; 7-a steam drum; 8-primary superheater; 9-secondary superheater.
Detailed Description
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
the embodiment is as follows: as shown in the attached drawing 1, the boiler desuperheating water system comprises a main water supply system 001, an economizer 6, a steam drum 7, a primary superheater 8 and a secondary superheater 9 which are sequentially communicated through a pipeline, wherein a water spraying desuperheating system 002 is connected to the pipeline between the primary superheater 8 and the secondary superheater 9 through a three-way pipeline, the main water supply system 001 comprises a water supply pump 1 and a stop valve 5 which are sequentially communicated through the pipeline, and the water spraying desuperheating system 002 comprises a water spraying desuperheating water pump 2, an adjusting valve 3 and a water spraying desuperheater 4 which are sequentially communicated through the pipeline.
As shown in fig. 1, the boiler attemperation water system is a combined cycle exhaust-heat boiler power station water supply and attemperation water system, in a three-pressure combined cycle exhaust-heat boiler, attemperation water of a high-pressure system and an intermediate-pressure system both come from a low-pressure steam drum, fig. 1 shows the high-pressure system water supply and attemperation water system, water is divided into two paths from the low-pressure steam drum to enter the high-pressure system, one path is a main water supply system 001 of the boiler, and the other path is a water spray attemperation system 002. A main water supply system 001 of the boiler controls water supply flow and pressure by a water supply pump 1, enters an economizer 5 for heating after passing through a stop valve 5, then enters a steam pocket 6, and enters a primary superheater 7 and a secondary heater 8 for heating after heat exchange of an evaporation heating surface. The steam temperature is controlled by the water spray desuperheater 4. The water spraying temperature reduction system 002 is composed of a water spraying temperature reduction water pump 2, an adjusting valve 3 and a water spraying temperature reducer 4. Wherein, the water spraying temperature reduction water pump 2 is a plunger pump with high flow and high pressure. The regulating valve 3 is used for determining whether the quantity of the temperature-reducing water and the pressure are required according to the working conditions of the boiler.
The main water supply system and the water spraying temperature reduction system of the boiler temperature reduction water system are respectively controlled, the operation is convenient, the regulating valve for enabling main water supply to enter the economizer is omitted, the initial construction investment of a power station boiler is saved, the equipment operation energy consumption is reduced, and the economical efficiency of a power plant is improved.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (4)
1. The utility model provides a boiler desuperheating water system, includes main water supply system (001), economizer (6), steam pocket (7), one-level over heater (8) and second grade over heater (9) that loop through the pipeline intercommunication, is connected with desuperheating water system through the tee bend pipeline on the pipeline between one-level over heater (8) and second grade over heater (9), characterized by, main water supply system (001) is including water-feeding pump (1) and stop valve (5) that loop through the pipeline intercommunication, and stop valve (5) are through pipeline intercommunication economizer (6), and the desuperheating water system adopts water spray desuperheating system (002) that is provided with the force (forcing) pump alone.
2. A boiler attemperation water system as claimed in claim 1, wherein the water spray attemperation system (002) comprises a water spray attemperation water pump (2), a regulating valve (3) and a water spray attemperator (4) which are sequentially communicated through a pipeline, and the water spray attemperator (4) is communicated on the pipeline between the primary superheater (8) and the secondary superheater (9) through a three-way pipeline.
3. A boiler attemperation water system as claimed in claim 2 wherein the water spray attemperation water pump (2) is a high flow and high pressure plunger pump.
4. A boiler desuperheating water system as claimed in claim 2 wherein said spray desuperheater (4) controls the temperature of steam entering the secondary superheater (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222685606.6U CN218469069U (en) | 2022-10-12 | 2022-10-12 | Boiler desuperheating water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222685606.6U CN218469069U (en) | 2022-10-12 | 2022-10-12 | Boiler desuperheating water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218469069U true CN218469069U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222685606.6U Active CN218469069U (en) | 2022-10-12 | 2022-10-12 | Boiler desuperheating water system |
Country Status (1)
| Country | Link |
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| CN (1) | CN218469069U (en) |
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2022
- 2022-10-12 CN CN202222685606.6U patent/CN218469069U/en active Active
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