CN209901006U - Circulating water enhanced cooling system - Google Patents
Circulating water enhanced cooling system Download PDFInfo
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- CN209901006U CN209901006U CN201920607645.XU CN201920607645U CN209901006U CN 209901006 U CN209901006 U CN 209901006U CN 201920607645 U CN201920607645 U CN 201920607645U CN 209901006 U CN209901006 U CN 209901006U
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Abstract
The utility model relates to a circulating water reinforcing cooling system belongs to the public auxiliary system field of steam turbine. The system comprises a cooling tower and a condenser, wherein the condenser is connected between a water inlet and a water outlet of the cooling tower through a circulating water pipeline; the dehumidification tower is internally provided with a packing layer; the dehumidification tower is arranged at the air inlet of the cooling tower, and the air outlet of the dehumidification tower is connected with the air inlet of the cooling tower; a solution regenerator and a cooler are sequentially connected between the liquid outlet and the liquid inlet of the dehumidification tower through a solution pipeline, and the solution regenerator is arranged in a smoke exhaust flue of a power plant boiler. The system is simple in integral composition, effectively reduces the exhaust back pressure of the steam turbine, improves the operation efficiency of the steam turbine, and provides a new choice for reducing the water outlet temperature of the circulating water of the cooling tower.
Description
Technical Field
The utility model belongs to public auxiliary system field of steam turbine relates to a circulating water reinforcing cooling system.
Background
The efficiency of a steam turbine is directly influenced by the exhaust back pressure of the steam turbine, the lower the exhaust back pressure is before a limit value, the higher the power generation efficiency is, the height of the exhaust back pressure is determined by the water supply temperature of circulating water (namely the cooling temperature of a cooling tower), and in a high-humidity area, the temperature of a wet bulb is high, the circulating water cannot be reduced to an ideal temperature, and the high back pressure operation of the steam turbine influences the power generation efficiency.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a circulating water reinforcing cooling system to reduce steam turbine exhaust backpressure, improve the operating efficiency of steam turbine.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a circulating water enhanced cooling system comprises a cooling tower and a condenser, wherein the condenser is connected between a water inlet and a water outlet of the cooling tower through a circulating water pipeline; the dehumidification tower is internally provided with a packing layer; the dehumidification tower is arranged at the air inlet of the cooling tower, and the air outlet of the dehumidification tower is connected with the air inlet of the cooling tower; a solution regenerator and a cooler are sequentially connected between the liquid outlet and the liquid inlet of the dehumidification tower through a solution pipeline, and the solution regenerator is arranged in a smoke exhaust flue of a power plant boiler.
Further, the cooler is a cooling coil buried in the soil.
Furthermore, the air inlet of the dehumidification tower is provided with a shutter which can be opened and closed in an adjustable way.
Furthermore, the dehumidification tower is plugged at the air inlet of the cooling tower, and the filler layer in the dehumidification tower is opposite to the air inlet of the cooling tower in position and has the same height.
Furthermore, a circulating water pump is arranged on the circulating water pipeline and is positioned in front of the condenser.
Further, the solution regenerator is arranged in a smoke exhaust flue in front of the induced draft fan.
Furthermore, a dilute solution pump is arranged on the solution pipeline and is positioned in front of the solution regenerator.
The beneficial effects of the utility model reside in that:
the dehumidification tower is additionally arranged to reduce the air humidity, so that the temperature of the air wet bulb entering the cooling tower is reduced, the cooling capacity of the cooling tower to the circulating water is improved, and the cooling tower is used for enhancing the cooling of the circulating water.
By utilizing waste flue gas and ground temperature, the heating and cooling processes are realized, extra energy consumption is not needed, and the requirements of energy conservation and emission reduction are met.
In general, the system is simple in integral composition, the exhaust back pressure of the steam turbine is effectively reduced, the operation efficiency of the steam turbine is improved, and a new choice is provided for reducing the outlet water temperature of the circulating water of the cooling tower.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic diagram of the system of the present invention.
Reference numerals: the system comprises a cooling tower-1, a condenser-2, a circulating water pipeline-3, a circulating water pump-4, a dehumidifying tower-5, a solution pipeline-6, a solution regenerator-7, a cooler-8, a smoke exhaust flue-9, a steam turbine-10, a dilute solution pump-11, a chimney-12 and an induced draft fan-13.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1, a circulating water enhanced cooling system includes a cooling tower 1 and a condenser 2, wherein the condenser 2 is connected between a water inlet and a water outlet of the cooling tower 1 through a circulating water pipeline 3; and a circulating water pump 4 is arranged on the circulating water pipeline 3, and the circulating water pump 4 is positioned in front of the condenser 2. Also comprises a dehumidification tower 5 with a packing layer inside; the dehumidification tower 5 is arranged at the air inlet of the cooling tower 1, and the air outlet of the dehumidification tower is connected with the air inlet of the cooling tower 1; a solution regenerator 7 and a cooler 8 are sequentially connected between the liquid outlet and the liquid inlet of the dehumidification tower 5 through a solution pipeline 6, and the solution regenerator 7 is arranged in a smoke exhaust flue 9 of a power plant boiler.
This system is through addding dehumidification tower 5 in order to reduce air humidity for the wet bulb temperature of air that gets into in cooling tower 1 reduces, thereby has improved the cooling capacity of cooling tower 1 to the circulating water, realizes the reinforcing cooling of cooling tower 1 to the circulating water.
Specifically, the dehumidifying tower 5 is arranged at the air inlet of the cooling tower 1 in a close manner, and the air outlet of the dehumidifying tower 5 is connected with the air inlet of the cooling tower 1. The filler layer in the dehumidifying tower 5 is arranged opposite to the air inlet of the cooling tower 1, and the height of the filler layer can be set according to the height of the air inlet of the cooling tower, namely, the filler layer is partially or completely blocked at the air inlet of the cooling tower. In general, the packing layer in the dehumidification tower 5 is opposite to the air inlet of the cooling tower 1 and has a height equivalent to that of the air inlet of the cooling tower 1, so that the air entering the cooling tower 1 is the dehumidified air. The air firstly enters a dehumidifying tower 5 for dehumidification and cooling, and then enters a cooling tower 1 for cooling circulating water, and the cooled circulating water enters a condenser 2 through a circulating water pipeline 3 for cooling the exhaust steam of a steam turbine 10.
A filler layer is arranged in a dehumidifying tower 5 in the system, and the dehumidifying tower dehumidifies by a chemical mode. The whole dehumidification system comprises a dehumidification tower 5, a solution regenerator 7, a dilute solution pump 11 and a solution pipeline 6, wherein the dehumidification tower 5, the dilute solution pump 11 and the solution regenerator 7 are connected into a circulation loop by the solution pipeline 6, and the dilute solution pump 11 is positioned in front of the solution regenerator 7. The dehumidification tower 5 is internally sprayed with absorption liquid, when air is contacted with the sprayed absorption liquid in the dehumidification tower 5, moisture in the air is absorbed by the absorption liquid to be dehumidified, the absorption liquid (dilute absorption liquid) which has absorbed the moisture is sent to the solution regenerator 7 by the dilute solution pump 11 to be contacted with the flue gas in the flue gas discharge flue, the moisture in the (dilute) absorption liquid is separated from the absorption liquid under the action of hot flue gas, and the separated (concentrated) absorption liquid is sent to the dehumidification tower 5 again.
The dehumidification system utilizes the flue gas discharged by the power plant boiler as a regenerative heat source of the dehumidification tower 5. In the prior art, the (waste) flue gas generated by the power plant boiler is discharged through a chimney 12, a smoke exhaust flue 9 is arranged in front of the chimney 12, an induced draft fan 13 is arranged on the smoke exhaust flue 9, and the (waste) flue gas in the smoke exhaust flue 9 is guided to the chimney 12 through the induced draft fan 13 and is discharged. The temperature of the (waste) flue gas is generally within the range of 120-140 ℃, and the solution regenerator 7 is arranged in the smoke exhaust flue 9, so that the water in the absorption liquid is separated by utilizing the heat of the (waste) flue gas, on one hand, the reutilization of low waste heat can be realized, the adverse effect of the hot flue gas on the environment is reduced, on the other hand, no additional heating equipment is needed, and the energy is saved.
Here, it should be noted that: because of solution regenerator 7 sets up in flue 9 of discharging fume, can make the circulation of flue gas in flue 9 of discharging fume reduce, but the flue gas heat can be reduced with the process of absorption liquid heat transfer in the solution regenerator to the flue gas, and the flue gas of low heat, low discharge also can make the power of rear draught fan 13 descend to some extent, and overall view, can not bring adverse effect to power plant's boiler is discharged fume with solution regenerator 7 setting in the flue of discharging fume. For this reason too, the solution regenerator 7 is preferably arranged in the flue stack 9 in front of the induced draft fan.
As a further improvement of the above solution, the dehumidification system further comprises a cooler 8 disposed behind the solution regenerator 7, wherein the cooler 8 is used for reducing the temperature of the (concentrated) absorption liquid separated by the solution regenerator, preventing the temperature of the absorption liquid from rising due to the action of the flue gas, and eliminating the adverse effect of the temperature rise on the dehumidification process.
Preferably, the cooler 8 is a cooling coil buried in the soil. The (thick) absorption liquid after regeneration cools down through the cooling coil who sets up in soil, has utilized the annual average temperature layer of soil promptly, sends back the dehumidification tower behind the cooling absorption liquid again, and the cooling effect of cooling tower air inlet can not only reliably be guaranteed to this process, can also realize energy saving.
As a further improvement of the scheme, the air inlet of the dehumidifying tower 5 is provided with the shutter which can be opened and closed in an adjustable manner, so that the air inlet amount can be adjusted as required, and the dehumidification can be completed according to different air inlet amounts, so that the whole system is more flexible in working.
Taking 20000t/h circulating water as an example, the outdoor dry bulb temperature is 29 ℃, the relative humidity is 90%, and when other parameters are the same, the wet bulb temperature can be reduced from 27.6 ℃ to 4.72 ℃ by removing a part of the inlet air humidity of the cooling tower to 60%2The water temperature of the hyperbolic cooling tower is reduced from 33.2 ℃ to 2.42 ℃ to 30.78 ℃, so that the efficiency of the steam turbine can be effectively improved.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (7)
1. A circulating water enhanced cooling system comprises a cooling tower and a condenser, wherein the condenser is connected between a water inlet and a water outlet of the cooling tower through a circulating water pipeline; the method is characterized in that: the dehumidification tower is internally provided with a packing layer; the dehumidification tower is arranged at the air inlet of the cooling tower, and the air outlet of the dehumidification tower is connected with the air inlet of the cooling tower; a solution regenerator and a cooler are sequentially connected between the liquid outlet and the liquid inlet of the dehumidification tower through a solution pipeline, and the solution regenerator is arranged in a smoke exhaust flue of a power plant boiler.
2. The circulating water augmented cooling system of claim 1, wherein: the cooler is a cooling coil buried in the soil.
3. The circulating water augmented cooling system of claim 1, wherein: the air inlet of the dehumidification tower is provided with a shutter which can be opened and closed in an adjustable way.
4. The circulating water augmented cooling system of claim 1, wherein: the dehumidification tower is plugged at the air inlet of the cooling tower, and the packing layer in the dehumidification tower is opposite to the air inlet of the cooling tower in position and has the same height.
5. The circulating water augmented cooling system of claim 1, wherein: and a circulating water pump is arranged on the circulating water pipeline and is positioned in front of the condenser.
6. The circulating water augmented cooling system of claim 1, wherein: the solution regenerator is arranged in a smoke exhaust flue in front of the induced draft fan.
7. The circulating water augmented cooling system of claim 1, wherein: the solution pipeline is provided with a dilute solution pump which is positioned in front of the solution regenerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607645.XU CN209901006U (en) | 2019-04-29 | 2019-04-29 | Circulating water enhanced cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607645.XU CN209901006U (en) | 2019-04-29 | 2019-04-29 | Circulating water enhanced cooling system |
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| CN209901006U true CN209901006U (en) | 2020-01-07 |
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| CN201920607645.XU Active CN209901006U (en) | 2019-04-29 | 2019-04-29 | Circulating water enhanced cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966869A (en) * | 2019-04-29 | 2019-07-05 | 重庆三峰卡万塔环境产业有限公司 | A kind of recirculated water enhancing cooling system |
-
2019
- 2019-04-29 CN CN201920607645.XU patent/CN209901006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966869A (en) * | 2019-04-29 | 2019-07-05 | 重庆三峰卡万塔环境产业有限公司 | A kind of recirculated water enhancing cooling system |
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