CN213574260U - Energy-saving and emission-reducing system using urban water supply as condenser cooling water - Google Patents
Energy-saving and emission-reducing system using urban water supply as condenser cooling water Download PDFInfo
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- CN213574260U CN213574260U CN202022718943.1U CN202022718943U CN213574260U CN 213574260 U CN213574260 U CN 213574260U CN 202022718943 U CN202022718943 U CN 202022718943U CN 213574260 U CN213574260 U CN 213574260U
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Abstract
The utility model discloses an utilize city water supply as energy saving and emission reduction system of condenser cooling water, including steam turbine, main condenser, peak condenser, booster pump, city water supply pipe etc.. And a part of the exhaust steam of the original turbine enters the peak condenser, and the peak condenser is cooled by city water supply, so that the load of the main condenser is reduced. The utility model can reduce the power supply coal consumption of the unit for the air cooling system; for a water cooling system, the water consumption of the cooling tower can be reduced. Meanwhile, the consumption of electric energy or natural gas of residents can be reduced, and the unit GDP energy consumption of the whole society is reduced.
Description
Technical Field
The utility model belongs to the technical field of electricity generation and heat supply unit, in particular to utilize energy saving and emission reduction system of city water supply as condenser cooling water.
Background
By 2020, the average power supply coal consumption of the active coal-fired generating set after being modified is lower than 310 g/kilowatt hour, wherein the average power supply coal consumption of the active coal-fired generating set (except for the air cooling unit) after being modified is lower than 300 g/kilowatt hour. From comprehensive upgrading and transformation conditions in recent years, transformation capable of greatly reducing power supply coal consumption mainly comprises turbine through-flow transformation and flue gas waste heat utilization transformation, and even if the transformation means is implemented in a plurality of power plants, the power plants are far away from a power supply coal consumption target in 2020, especially air cooling units.
From the current situation, bidding and surfing of power generation enterprises are a fact, power plants with low power supply coal consumption and low power price are necessarily scheduled preferentially by the country, and power plants which do not meet the requirements face huge survival pressure.
The loss of the cold end of a power generation enterprise is about 50%, the heat is generally discharged into the air after passing through a condenser, for example, a 30 ten thousand generating set, the circulating water quantity of the condenser is about 30000 tons per hour, wherein about 1.0% of the water is evaporated into the atmosphere through a cooling tower, and is reduced to 300 tons per hour. In northwest and northern water-deficient areas, a large number of air cooling units exist, the backpressure of the air cooling units is higher than that of a straight condensing unit, the designed power supply coal consumption is higher than 10g/kwh, and in addition, many air cooling units can not reach the designed value in the actual operation, the power supply coal consumption is high, and the survival pressure is high.
According to statistics, 3 tons of daily water is consumed in each month of a city, taking a city with 800 ten thousand population as an example, the annual water consumption is 28800 ten thousand tons of water, and is reduced to 32900 ten thousand tons per hour. If 40% of the domestic water needs to be heated for use, such as bathing, cooking, drinking and the like, the part of the water consumes a large amount of high-quality energy such as electric energy, natural gas and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize urban water supply as energy saving and emission reduction system of condenser cooling water to solve above-mentioned problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
compared with the prior art, the utility model discloses there is following technological effect:
utilize city water supply as condenser cooling water's energy saving and emission reduction system in the course of the work, partly entering peak condenser of former steam turbine exhaust is squeezed into the peak condenser with city water supply through the booster pump in, utilize city water supply to cool off the peak condenser. To the air cooling system, the utility model discloses can reduce the exhaust steam volume that gets into main condenser, reduce the vacuum of air cooling system, reduce the coal consumption. Simultaneously, the exhaust steam heat brought away by urban water supply enters the water for residents, so that the consumption of the electric energy or natural gas of the residents is reduced, and the energy consumption of unit GDP is reduced. To water cooling system, the utility model discloses when reducing main condenser vacuum, can reduce the water consumption of cooling tower, the exhaust steam heat that urban water supply was taken away gets into the resident water, reduces resident electric energy or natural gas consumption, reduces unit GDP's energy consumption. The steam inlet amount of the newly-added condenser can be automatically adjusted according to the water supply amount of a city, and the operation of the main engine is not influenced. To sum up, the utility model discloses can reduce the coal consumption of power plant, reduce the water consumption, reduce social unit GDP's energy consumption, the system operation is ripe stable, and energy saving and emission reduction effect is obvious.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Wherein, 1 is a steam turbine, 2 is a main condenser, 3 is a peak condenser, 4 is a booster pump, 5 is a circulating water pump, 6 is an urban water supply pipeline, 7 is a water supply flow regulating valve, 8 is a water quality measuring instrument, 9 is a water quality regulating system, 10 is a liquid level meter, 11 is a liquid level regulating valve, 12 is a thermometer, 13 is a condensate pump, and 14 is a cooling tower.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the energy saving and emission reduction system using city water supply as condenser cooling water of the present invention includes a steam turbine 1, a main condenser 2, a peak condenser 3, a city water supply pipeline 6, etc.;
the outlet of the steam turbine 1 is communicated with the steam inlets of the main condenser 2 and the peak condenser 3, and the condensed water outlets of the main condenser 2 and the peak condenser 3 are communicated with the condensed water pump 13.
The outlet of the water side of the cooling tower 14 is communicated with the inlet of the circulating water pump 5, the outlet of the circulating water pump 5 is communicated with the cooling water inlet of the main condenser 2, and the cooling water outlet of the main condenser 2 is communicated with the inlet of the water side of the cooling tower 14.
The inlet of the booster pump 4 is communicated with the urban water supply pipeline 6, the outlet of the booster pump 4 is communicated with the cooling water inlet of the peak condenser 3, and the cooling water outlet of the peak condenser 3 is communicated with the urban water supply pipeline 6.
And a water supply flow regulating valve 7 is arranged on the urban water supply pipeline 6 and used for regulating the flow of the booster pump 4.
The main condenser 2 is a direct air-cooling condenser, an indirect air-cooling condenser or a water-cooling condenser;
the peak condenser 3 is a water-cooling condenser;
the main condenser 2 and the peak condenser 3 are connected in parallel for use;
a water quality measuring instrument 8 is arranged on the urban water supply pipeline 6, and when the water quality is unqualified, the urban water supply pipeline is treated by a water quality regulating system 9;
the outlet of the peak condenser 3 is provided with a liquid level regulating valve 10, and the opening degree of the liquid level regulating valve 10 is controlled by a liquid level meter 11.
The inlet of the condensate pump 13 is provided with a thermometer 12, and the flow of the circulating water pump 5 is controlled by the thermometer 12, so that the temperature of the condensate water reaches a set value.
The utility model discloses a working process does:
one part of the exhaust steam from the outlet of the steam turbine 1 enters a main condenser 2 and is cooled by a cooling tower 14 of the original unit, and the other part of the exhaust steam enters a peak condenser 3 and is cooled by urban water supply. The urban water supply enters the peak condenser 3 through the booster pump 4, and is mixed into the original urban water supply pipeline 6 after being heated, so that the temperature of the whole urban water supply is increased. The water quality may be affected after the temperature of the urban water supply rises, so the water quality is monitored by the water quality measuring instrument 8, and when the water quality is unqualified, the water quality is regulated by the water quality regulating system 9. The liquid level in the peak condenser 3 is controlled by an outlet liquid level regulating valve 11, and condensed water at the outlets of the main condenser 2 and the peak condenser 3 is converged and then enters a unit condensed water pump 13. The utility model can reduce the power supply coal consumption of the unit for the air cooling system; for water cooled systems, the water consumption of the cooling tower 14 may be reduced. Meanwhile, the consumption of electric energy or natural gas of residents can be reduced, and the unit GDP energy consumption of the whole society is reduced.
Claims (9)
1. An energy-saving and emission-reducing system using urban water supply as condenser cooling water is characterized by comprising a steam turbine (1), a main condenser (2), a peak condenser (3), a condensate pump (13) and an urban water supply pipeline (6); the outlet of the steam turbine (1) is divided into two paths, and is respectively communicated with the steam inlets of the main condenser (2) and the peak condenser (3), and the condensed water outlets of the main condenser (2) and the peak condenser (3) are communicated with a condensed water pump (13); and a cooling water inlet and a cooling water outlet of the peak condenser (3) are both connected to a city water supply pipeline (6).
2. The energy-saving and emission-reducing system using city water supply as condenser cooling water according to claim 1, characterized in that a cooling water inlet of the main condenser (2) is connected with a water side outlet of the cooling tower (14), and the cooling water outlet of the main condenser (2) is communicated with the water side inlet of the cooling tower (14).
3. The energy-saving and emission-reducing system using city water as condenser cooling water according to claim 2, characterized in that a circulating water pump (5) is arranged between a cooling water inlet of the main condenser (2) and a water side outlet of the cooling tower (14).
4. The energy-saving and emission-reducing system using city water supply as condenser cooling water according to claim 1, characterized in that a booster pump (4) is arranged between the city water supply pipeline (6) and the cooling water inlet of the peak condenser (3).
5. The energy-saving and emission-reducing system using urban water supply as condenser cooling water according to claim 1, characterized in that the peak condenser (3) is provided with a supply water flow regulating valve (7) between the connections on the urban water supply pipeline (6).
6. The energy-saving and emission-reducing system using city water as condenser cooling water according to claim 1, characterized in that the main condenser (2) is a direct air-cooled condenser, an indirect air-cooled condenser or a water-cooled condenser; the peak condenser (3) is a water-cooling condenser; the main condenser (2) and the peak condenser (3) are connected in parallel for use.
7. The energy-saving and emission-reducing system using urban water supply as condenser cooling water according to claim 1, characterized in that a water quality measuring instrument (8) and a water quality adjusting system (9) are arranged on the urban water supply pipeline (6), and when the water quality is unqualified, the water quality is treated by the water quality adjusting system (9).
8. The energy-saving and emission-reducing system using city water supply as condenser cooling water according to claim 1, characterized in that a liquid level regulating valve (11) is arranged between the peak condenser (3) and the condensate pump (13), a liquid level meter (10) is arranged on the side surface of the peak condenser (3), and the opening degree of the liquid level regulating valve (11) is controlled by the liquid level meter (10).
9. The energy-saving and emission-reducing system for utilizing municipal water as condenser cooling water according to claim 1, wherein a thermometer (12) is provided at the inlet of the condensate pump (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718943.1U CN213574260U (en) | 2020-11-21 | 2020-11-21 | Energy-saving and emission-reducing system using urban water supply as condenser cooling water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718943.1U CN213574260U (en) | 2020-11-21 | 2020-11-21 | Energy-saving and emission-reducing system using urban water supply as condenser cooling water |
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| CN213574260U true CN213574260U (en) | 2021-06-29 |
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| CN202022718943.1U Active CN213574260U (en) | 2020-11-21 | 2020-11-21 | Energy-saving and emission-reducing system using urban water supply as condenser cooling water |
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| CN (1) | CN213574260U (en) |
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