CN210772979U - Water storage and discharge system based on closed type circulating cooling system - Google Patents
Water storage and discharge system based on closed type circulating cooling system Download PDFInfo
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- CN210772979U CN210772979U CN201921634045.9U CN201921634045U CN210772979U CN 210772979 U CN210772979 U CN 210772979U CN 201921634045 U CN201921634045 U CN 201921634045U CN 210772979 U CN210772979 U CN 210772979U
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Abstract
The utility model relates to a cooling technology field especially relates to a store water system based on closed circulative cooling system. This water storage and release system includes storage water tank, a plurality of moisturizing pumps, and circulating water supply pipe says through first urgent drain pipe and is connected with the storage water tank, and the circulating water return pipe says through the urgent drain pipe of second and is connected with the storage water tank, and the moisturizing pump is through moisturizing main pipeline and circulating water supply pipe say and be connected. The utility model provides a store water system based on closed circulative cooling system can realize when closed circulative cooling system breaks down or overhauls, practices thrift circulating water in the closed circulative cooling system, stabilizes closed circulative cooling system internal pressure.
Description
Technical Field
The utility model relates to a cooling technology field especially relates to a store water system based on closed circulative cooling system.
Background
The cold end system is the important component part in the unit system of power plant, and in northern water shortage area, the cold end system of power plant is mostly the air cooling system, wherein includes direct air cooling system, indirect air cooling system. For an air cooling unit, reducing the exhaust pressure of a steam turbine is one of effective methods for improving the thermal economy of the unit, and is also an effective way for ensuring the safe operation of the unit. The direct air cooling unit is easily affected by environmental flow field and temperature change, and is particularly greatly affected by high-temperature and strong-wind weather in summer. Therefore, on the premise of ensuring the safe and economic operation of the unit and reducing the standard coal consumption of power supply, the heat dissipation capacity of the cold end of the air cooling unit is increased, and an effective method for ensuring the peak-facing degree summer of the direct air cooling unit is formed.
In order to reduce the running backpressure of the direct air cooling unit and improve the running safety and economy of the unit, a peak cooling system is adopted, and partial exhaust steam is shunted to a newly added peak cooler so as to achieve the purposes of reducing the running backpressure of the unit in summer and improving the running economy of the unit. According to different forms of cooling towers of peak cooling systems, the peak cooling systems are divided into an open system and a closed system, most of the cooling towers in the current industrial application are open cooling towers, and the problems of poor circulating water quality, large water consumption, large energy loss, high operating cost and the like generally exist. Compared with an open cooling tower, the closed cooling tower dissipates the heat of circulating water to the ambient air through dividing wall type heat exchange, avoids the direct contact of the circulating water and the environment, has less loss of circulating water quantity in long-term operation, and realizes the purposes of water saving and energy saving.
Each unit of the closed circulation cooling system selects 1 group of mechanical ventilation air drying tower. Each group of dry cooling tower consists of a plurality of sections of cooling units. And the circulating cooling water respectively enters a cooling unit of the mechanical ventilation air cooling tower to be cooled and then returns to the peak cooler. The mechanical ventilation air drying cooling tower has the defects that a cooling fan fails in the operation in summer and equipment valves are overhauled, so that the single-section cooling unit is stopped, and circulating cooling water needs to be discharged in time at the moment to ensure the stable pressure of the system. When the traditional cooling tower is overhauled, water in the pipeline is discharged into a drainage ditch or a drainage well, and cannot be recycled, so that the waste of water resources is caused.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
To the technical problem that exists now, the utility model provides a water storage system based on closed circulative cooling system has solved when closed circulative cooling system breaks down or overhauls, causes extravagant and the unstable problem of closed circulative cooling system internal pressure to the circulating water in the closed circulative cooling system.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
the utility model provides a water storage system based on closed circulation cooling system, closed circulation cooling system and water storage system, closed circulation cooling system includes exhaust steam pipeline, peak cooler, evacuation pipeline, circulating water supply pipe, circulating water return pipe, circulating water pump and cooling tower, peak cooler is connected with exhaust steam pipeline and evacuation pipeline respectively, circulating water pump sets up on circulating water supply pipe, one end of circulating water supply pipe is connected with circulating water return pipe, the other end of circulating water supply pipe is connected with the other end of circulating water return pipe through peak cooler, the cooling tower includes a plurality of cooling units, one end of cooling unit is connected with circulating water supply pipe, the other end of cooling unit is connected with circulating water return pipe, water storage system includes the storage water tank, a plurality of water make-up pumps, circulating water supply pipe is connected with the storage water tank through first urgent drain pipe, the circulating water return pipeline is connected with the water storage tank through a second emergency water drain pipeline, the water replenishing pump is connected with the water replenishing main pipeline through a water replenishing branch pipeline, and the water replenishing main pipeline is connected with the circulating water supply pipeline.
According to the utility model discloses, storage water system still includes the cooling unit drain pipe, and the cooling unit passes through the cooling unit drain pipe and is connected with the storage water tank.
According to the utility model discloses, be equipped with first shutoff valve on the first urgent drain pipe, be equipped with the second shutoff valve on the urgent drain pipe of second.
According to the utility model discloses, a plurality of moisturizing pumps parallel operation still is equipped with the third on-off valve on the moisturizing main line, all is equipped with the reflux valve on the moisturizing lateral conduit.
According to the utility model discloses, be equipped with many cooling unit on the cooling unit drain pipe and turn on water a pipeline, still be equipped with the first subchannel of cooling unit and cooling unit second subchannel on every cooling unit drain pipe, the cooling unit drains water a pipeline and passes through the first subchannel of cooling unit and be connected with the water inlet of cooling unit, the cooling unit drains water a pipeline and passes through the cooling unit second and be connected with the delivery port of cooling unit, be equipped with the fourth shut-off valve on the first subchannel of cooling unit, be equipped with the fifth shut-off valve on the cooling unit second subchannel.
According to the utility model discloses, water storage system still includes water drainage tank.
According to the utility model discloses, still be equipped with the drain valve on the moisturizing main line.
According to the utility model discloses, closed circulative cooling system still includes demineralized water pipeline and expansion tank, demineralized water pipeline and expansion tank are connected with the circulating water supply pipe respectively.
(III) advantageous effects
The utility model has the advantages that:
the utility model provides a water storage and discharge system based on closed circulative cooling system, when closed circulative cooling system stopped to transport, open first shut-off valve and second shut-off valve simultaneously can discharge the circulating water in the closed circulative cooling system in time, store to the storage water tank, practiced thrift the water resource, maintained the pressure stability of closed circulative cooling water system; when a fault occurs in a single cooling unit, the fourth shut-off valve and the fifth shut-off valve are opened, redundant circulating water in the cooling unit is discharged through a water discharge pipeline of the cooling unit, the normal work of the closed circulating cooling system can be maintained, and the water storage and discharge system improves the economical efficiency, the safety and the flexibility of the operation of the closed circulating cooling system.
Drawings
Fig. 1 is a schematic view of the overall structure of a water storage and discharge system based on a closed circulation cooling system of the present invention;
fig. 2 is a partially enlarged view of a in fig. 1 according to the present invention.
[ description of reference ]
11: a steam exhaust pipeline; 12: a spike cooler; 13: a vacuum pipeline is pumped; 14: a circulating water supply pipeline; 15: a circulating water return pipeline; 16: a water circulating pump; 17: a cooling unit; 18: an expansion tank; 19: a demineralized water conduit;
21: a water storage tank; 22: a water replenishing pump; 23: a first emergency water discharge pipe; 231: a first shut-off valve; 24: a second emergency water discharge pipe; 241: a second shutoff valve; 25: a water replenishing main pipeline; 251: a third shutoff valve; 252: a water replenishing branch pipeline; 253: a reflux valve; 254: a drain valve; 26: a cooling unit water discharge pipe; 261: a cooling unit water discharge branch pipeline; 262: a cooling unit first branch conduit; 263: a cooling unit second branch duct; 264: a fourth shutoff valve; 265: a fifth shutoff valve; 27: a water discharge tank;
31: a steam turbine; 32: a generator set exhaust pipeline; 33: a condenser; 34: the condensed water returns to the steam exhaust device.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
The embodiment provides a water storage and discharge system based on closed circulation cooling system, closed circulation cooling system and water storage and discharge system, closed circulation cooling system includes exhaust steam pipeline 11, peak cooler 12, evacuation pipeline 13, circulating water supply pipeline 14, circulating water return pipe 15, circulating water pump 16 and cooling tower, peak cooler 12 is connected with exhaust steam pipeline 11 and evacuation pipeline 13 respectively, circulating water pump 16 sets up on circulating water supply pipeline 14, one end and circulating water return pipe 15 of circulating water supply pipeline 14 are connected, the other end of circulating water supply pipeline 14 is connected with the other end of circulating water return pipe 15 through peak cooler 12, the cooling tower includes a plurality of cooling unit 17, the one end and the circulating water supply pipeline 14 of cooling unit 17 are connected, the other end and the circulating water return pipe 15 of cooling unit 17 are connected, water storage and discharge system includes storage water tank 21, water storage tank, A plurality of moisturizing pumps 22, circulating water supply pipe 14 are connected with storage water tank 21 through first urgent drain pipe 23, and circulating water return pipe 15 is connected with storage water tank 21 through the urgent drain pipe 24 of second, and moisturizing pump 22 is connected with moisturizing main pipe way 25 through moisturizing branch pipe way 252, and moisturizing main pipe way 25 is connected with circulating water supply pipe 14. A first shut-off valve 231 is disposed on the first emergency drain pipe 23, and a second shut-off valve 241 is disposed on the second emergency drain pipe 24.
In practical application, when the closed circulation cooling system is stopped for maintenance, the first shut-off valve 231 and the second shut-off valve 241 are opened simultaneously to store the circulating water in the closed circulation cooling system, so that water resources are saved, and the pressure in the closed circulation cooling system is maintained to be stable. When the closed circulation cooling system is normally operated again, the water replenishing pump 22 pumps the circulating water stored in the water storage tank 21 into the circulating water supply pipeline 14 through the water replenishing main pipeline 25, so that water resources can be effectively utilized.
Further, the water storage system further comprises a cooling unit water discharge pipe 26, and the cooling tower is connected with the water storage tank 21 through the cooling unit water discharge pipe 26. Specifically, a plurality of cooling unit water discharging branch pipes 261 are arranged on the cooling unit water discharging pipe 26, a cooling unit first branch pipe 262 and a cooling unit second branch pipe 263 are further arranged on each cooling unit water discharging branch pipe 261, the cooling unit water discharging branch pipe 261 is connected with a water inlet of the cooling unit 17 through the cooling unit first branch pipe 262, the cooling unit water discharging branch pipe 261 is connected with a water outlet of the cooling unit 17 through the cooling unit second branch pipe 263, a fourth shut-off valve 264 is arranged on the cooling unit first branch pipe 262, and a fifth shut-off valve 265 is arranged on the cooling unit second branch pipe 263. In practical application, when a fault occurs in a single cooling unit 17, valves on pipelines of the cooling unit respectively connected with a circulating water supply pipeline and a circulating water return pipeline are closed, and meanwhile, a fourth shut-off valve 264 and a fifth shut-off valve 265 are opened to discharge redundant circulating water in the single cooling unit 17 through a cooling unit water discharge pipeline 26, so that the normal work of the closed circulation cooling system can be maintained, and the water storage and discharge system improves the economical efficiency, the safety and the flexibility of the operation of the closed circulation cooling system.
Further, a plurality of water replenishing pumps 22 are connected in parallel to operate, and the water replenishing branch pipelines 252 are provided with backflow valves 253. In this embodiment, the plurality of water replenishing pumps 22 are connected in parallel, and circulating water stored in the water storage tank 21 can be quickly pumped into the circulating water supply pipeline 14 through the water replenishing main pipeline 25, so that the water replenishing efficiency of the water storage and discharge system is increased.
Furthermore, a drain valve 254 is further arranged on the water replenishing main pipeline 25, a drain groove 27 is arranged at a position corresponding to the drain valve 254, and when the water quality in the water storage tank 21 is unqualified, the drain valve 254 is opened to drain the water in the water storage tank 21 to the drain groove 27.
Specifically, the closed circulation cooling system further includes a demineralized water pipe 19 and an expansion water tank 18, and the demineralized water pipe 19 and the expansion water tank 18 are respectively connected to the circulating water supply pipe 14. The expansion water tank 18 is used for balancing the pressure and the water capacity in the closed circulating cooling system, so that the closure and the pressure stability of the system are ensured, and the hazards such as water hammer are reduced. The demineralized water pipeline 19 is connected with a boiler water supply pipeline to automatically supply water to the closed circulating cooling system.
The working principle of the closed circulating cooling system and the water storage and drainage system is as follows:
most of exhaust steam in a power plant turbine 31 enters a condenser 33 through a generator unit exhaust pipeline 32 to be condensed and then enters a condensate water return exhaust device 34, a closed circulation cooling system extracts partial exhaust steam from the generator unit exhaust pipeline and enters a peak cooler 12 through an exhaust steam pipeline 11, a vacuumizing pipeline 13 is led out from the peak cooler 12 to a host vacuumizing pipeline 13, the exhaust steam is cooled by the peak cooler 12 and then becomes saturated condensate water, the condensate water is connected to a hot well of the host exhaust steam device through the exhaust steam condensate pipeline, circulating water is supplied to absorb the heat of the exhaust steam through the peak cooler 12, and the circulating water is led to a return water cooling unit 17 to be cooled and then is boosted by a circulating water pump 16 and then returns to the peak cooler 12.
When the closed cycle cooling system is shut down for maintenance, the first shut-off valve 231 and the second shut-off valve 241 are opened simultaneously to store the circulating water in the closed cycle cooling system, so that water resources are saved and the pressure in the closed cycle cooling system is maintained. When a fault occurs in a single cooling unit 17, the fourth shutoff valve 264 and the fifth shutoff valve 265 are opened, and redundant circulating water in the cooling unit 17 is discharged through the cooling unit water discharge pipeline 26, so that the normal work of the closed circulation cooling system can be maintained, and the water storage and discharge system improves the economical efficiency, the safety and the flexibility of the operation of the closed circulation cooling system.
It should be understood that the above description of the embodiments of the present invention is only for illustrating the technical lines and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, but the present invention is not limited to the above specific embodiments. All changes and modifications that come within the scope of the claims are to be embraced within their scope.
Claims (8)
1. The utility model provides a storage and discharge system based on closed circulative cooling system, includes closed circulative cooling system and storage and discharge system, closed circulative cooling system includes exhaust steam pipeline (11), peak cooler (12), evacuation pipeline (13), circulating water supply pipe (14), circulating water return water pipeline (15), circulating water pump (16) and cooling tower, peak cooler (12) respectively with exhaust steam pipeline (11) with evacuation pipeline (13) are connected, circulating water pump (16) set up on circulating water supply pipe (14), the one end of circulating water supply pipe (14) with circulating water return water pipeline (15) are connected, the other end of circulating water supply pipe (14) passes through peak cooler (12) with the other end of circulating water return water pipeline (15) is connected, the cooling tower includes a plurality of cooling unit (17), one end of each cooling unit (17) is connected with the circulating water supply pipeline (14), and the other end of each cooling unit (17) is connected with the circulating water return pipeline (15),
the water storage and discharge system comprises a water storage tank (21) and a plurality of water replenishing pumps (22);
the circulating water supply pipeline (14) is connected with the water storage tank (21) through a first emergency water drain pipeline (23), the circulating water return pipeline (15) is connected with the water storage tank (21) through a second emergency water drain pipeline (24), the water replenishing pump (22) is connected with a water replenishing main pipeline (25) through a water replenishing branch pipeline (252), and the water replenishing main pipeline (25) is connected with the circulating water supply pipeline (14).
2. A storage and discharge system based on a closed cycle cooling system according to claim 1, characterized in that it further comprises a cooling unit discharge pipe (26), said cooling unit (17) being connected to said storage tank (21) through said cooling unit discharge pipe (26).
3. A storage and discharge system based on a closed cycle cooling system as claimed in claim 2, wherein a first shut-off valve (231) is provided on the first emergency discharge pipe (23), and a second shut-off valve (241) is provided on the second emergency discharge pipe (24).
4. A water storage and discharge system based on a closed cycle cooling system as claimed in claim 3, wherein a plurality of water replenishing pumps (22) are connected in parallel, a third shut-off valve (251) is further arranged on the water replenishing main pipeline (25), and a reverse flow valve (253) is arranged on each water replenishing branch pipeline (252).
5. The closed cycle cooling system-based storage water system according to claim 4, a plurality of cooling unit water discharge branch pipelines (261) are arranged on the cooling unit water discharge pipeline (26), a cooling unit first branch pipeline (262) and a cooling unit second branch pipeline (263) are also arranged on each cooling unit water discharge branch pipeline (261), the cooling unit water discharge branch pipe (261) is connected with the water inlet of the cooling unit (17) through the cooling unit first branch pipe (262), the cooling unit water discharge branch pipe (261) is connected with the water outlet of the cooling unit (17) through the cooling unit second branch pipe (263), a fourth shut-off valve (264) is arranged on the first branch pipeline (262) of the cooling unit, and a fifth shut-off valve (265) is arranged on the second branch pipeline (263) of the cooling unit.
6. The closed cycle cooling system-based water storage system according to claim 5, further comprising a water discharge tank (27).
7. The closed cycle cooling system-based storage water system as claimed in claim 6, wherein a drain valve (254) is further provided on the water replenishing main pipe (25).
8. The closed cycle cooling system-based storage water system as claimed in claim 7, further comprising a demineralized water pipe (19) and an expansion tank (18), wherein the demineralized water pipe (19) and the expansion tank (18) are respectively connected with the circulating water supply pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634045.9U CN210772979U (en) | 2019-09-27 | 2019-09-27 | Water storage and discharge system based on closed type circulating cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634045.9U CN210772979U (en) | 2019-09-27 | 2019-09-27 | Water storage and discharge system based on closed type circulating cooling system |
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| CN210772979U true CN210772979U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631317A (en) * | 2019-09-27 | 2019-12-31 | 国电龙源节能技术有限公司上海分公司 | Water storage and discharge system based on closed type circulating cooling system |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631317A (en) * | 2019-09-27 | 2019-12-31 | 国电龙源节能技术有限公司上海分公司 | Water storage and discharge system based on closed type circulating cooling system |
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Address after: Room 217-7, 1158 Xiehe Road, Changning District, Shanghai 200335 Patentee after: Guoneng Longyuan Lantian Energy Saving Technology Co.,Ltd. Shanghai Branch Address before: Room 217-7, 1158 Xiehe Road, Changning District, Shanghai 200335 Patentee before: Guodian Longyuan Energy Saving Technology Co.,Ltd. Shanghai Branch |
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