CN102322747A - Indirect cooling system of header system consisting of two turbines and one tower - Google Patents
Indirect cooling system of header system consisting of two turbines and one tower Download PDFInfo
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- CN102322747A CN102322747A CN201110217825A CN201110217825A CN102322747A CN 102322747 A CN102322747 A CN 102322747A CN 201110217825 A CN201110217825 A CN 201110217825A CN 201110217825 A CN201110217825 A CN 201110217825A CN 102322747 A CN102322747 A CN 102322747A
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Abstract
The invention discloses an indirect cooling system of a header system consisting of two turbines and one tower, which is used for solving the problem that a circulating water piping system is complicated in the existing system. The indirect cooling system comprises two parallel turbine condensers (1), cooling sectors (10), an annular circulating water heating hot water header (7), a circulating water cold water header (13) and a cooling sector drainage header (19), wherein the cooling sectors (10) are evenly arranged at intervals along the outer circle of the bottom of a cooling tower in a natural draft cooling tower (21); the annular circulating water heating hot water header (7), the circulating water cold water header (13) and the cooling sector drainage header (19) take the center of the tower (21) as the common center of a circle; the annular circulating water heating hot water header (7) is communicated with the cooling sectors (10) by sector inlet pipes (8), and sector inlet valves (9) are arranged on the sector inlet pipes (8); the circulating water cold water header (13) is communicated with the cooling sectors (10) by sector outlet tubes (12), and sector outlet valves (11) are arranged on the sector outlet tubes (12); and the cooling sector drainage header (19) is communicated with the cooling sectors (10) by sector discharging tubes (17). The indirect cooling system realizes the centralized layout and is convenient to operate and manage.
Description
Technical field
The present invention relates to a kind of 2x300MW of thermal power plant level two machines one tower indirect air cooling system, is that the circulating water pipeline in the cooling stack is designed to piping-main scheme, has changed the but interior circulating water pipeline unit system of tower of existing gravity-flow ventilation.
Background technology
Indirect air cooling system is because its better economy to a certain extent, moves relatively stablely, is used widely.The present indirect Air-cooled Unit of 2x300MW level, cooling tower all adopts cooling stack.Scale according to cooling tower has two kinds of set-up modes: a kind of is that every unit is provided with a cooling tower, and another kind is that two units are provided with a cooling tower.One machine, one tower set-up mode, floor space is big, investment is higher; Two machines, one tower set-up mode, floor space is little, investment is lower.When adopting two machines, one tower, there is following problem in the circulating water pipeline unit system in the present cooling tower: the one, and the circulating water pipeline system complex arranges that difficulty is big, invests higher; The 2nd, differed greatly by two the unit recirculated water cooling coolant-temperature gages that influence of ambient wind; The 3rd, the position that can't regulate the cooling sector of operation as required makes it be in windward side to improve unit operation efficient in summer, perhaps makes it not be in windward side in the winter time to improve the antifreeze ability of unit.
Summary of the invention
The invention provides a kind of two machines, one tower piping-main scheme indirect cooling system, solved circulating water pipeline system complex and two problems that unit recirculated water cooling coolant-temperature gage differs greatly that existing system exists.
The present invention overcomes the above problems through following scheme:
A kind of two machines, one tower piping-main scheme indirect cooling system; Two turbine condensers, cooling stack and the ground lower water tank that comprise parallel connection in cooling stack, are furnished with the cooling sector along even compartment of terrain, outer ring, cooling tower bottom; With the tower center is the cooling sector of recirculated water cooling jellyfish pipe and the annular of the common center of circle female pipe of recirculated water hot water that is furnished with annular respectively, annular female pipe that discharges water; The female pipe of recirculated water hot water is communicated with through the sector water inlet pipe with the cooling sector, and the sector water inlet pipe is provided with the sector water intaking valve, and recirculated water cooling jellyfish pipe is communicated with through the sector outlet pipe with the cooling sector; The sector outlet pipe is provided with the sector outlet valve; Cooling sector female pipe that discharges water is communicated with through the sector adjutage with the cooling sector, and the sector adjutage is provided with the sector discharging valve, cools off the sector mother that discharges water and manages and be communicated with the ground lower water tank; The recirculated water hot-water line of turbine condenser is communicated with the female pipe of the recirculated water hot water of annular; The recirculated water hot-water line of turbine condenser is provided with the recirculated water pump line, on the recirculated water pump line, is disposed with water circulating pump inlet valve, water circulating pump and water circulating pump outlet valve, and the recirculated water cooling water pipe of turbine condenser is communicated with the recirculated water cooling jellyfish pipe of annular; The female pipe of the recirculated water hot water of annular is communicated with through shunt valve with the recirculated water cooling jellyfish pipe of annular, and shunt valve is provided with bypass valve.
Be provided with the cooling triangle in the described cooling sector, this cooling triangle is vertically to be arranged on the outer ring, cooling tower bottom.
The invention has the beneficial effects as follows: circulating water pipeline adopts piping-main scheme in the cooling tower, and system architecture is simple, reduces investment outlay, and can regulate the quantity and economy and the stability of position with the raising unit operation of the cooling triangle that puts into operation according to the unit needs.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Specific embodiment
A kind of two machines, one tower piping-main scheme indirect cooling system; Two turbine condensers 1, cooling stack 21 and the ground lower water tank 20 that comprise parallel connection; In cooling stack 21; Being furnished with cooling sector 10 along even compartment of terrain, outer ring, cooling tower bottom, is cooling sector that the common center of circle is furnished with recirculated water cooling jellyfish pipe 13 and the annular of the female pipe of the recirculated water hot water of annular 7, annular respectively female pipe 19 that discharges water with the tower center, the female pipe 7 of recirculated water hot water with cool off sector 10 and be communicated with through sector water inlet pipe 8; Sector water inlet pipe 8 is provided with sector water intaking valve 9; Recirculated water cooling jellyfish pipe 13 is communicated with through sector outlet pipe 12 with cooling sector 10, and sector outlet pipe 12 is provided with sector outlet valve 11, the cooling sector discharge water mother manage 19 with cool off sector 10 and be communicated with through sector adjutage 17; Sector adjutage 17 is provided with sector discharging valve 18; Discharge water female pipe 19 of cooling sector is communicated with ground lower water tank 20, and the recirculated water hot-water line 2 of turbine condenser 1 is managed 7 with annular recirculated water hot water mother and is communicated with, and the recirculated water hot-water line 2 of turbine condenser 1 is provided with recirculated water pump line 6; On recirculated water pump line 6, be disposed with water circulating pump inlet valve 3, water circulating pump 4 and water circulating pump outlet valve 5; The recirculated water cooling water pipe 14 of turbine condenser 1 is communicated with the recirculated water cooling jellyfish pipe 13 of annular, and the female pipe 7 of the recirculated water hot water of annular and annular recirculated water cooling jellyfish are managed 13 and be communicated with through shunt valve 15, and shunt valve 15 is provided with bypass valve 16.
Be provided with the cooling triangle in the described cooling sector 10, this cooling triangle is vertically to be arranged on the outer ring, cooling tower bottom.
Recirculated water hot water comes out to get into the female pipe 7 of recirculated water hot water through recirculated water hot-water line 2, water circulating pump inlet valve 3, water circulating pump 4, water circulating pump outlet valve 5, recirculated water pump line 6 from turbine condenser 1; Recirculated water hot water enters into cooling sector 10 through sector water inlet pipe 8, sector water intaking valve 9 again and carries out surface heat exchanging with surrounding air; Cooled recirculated water cold water enters into turbine condenser 1 through sector outlet valve 11, sector outlet pipe 12, recirculated water cooling jellyfish pipe 13, recirculated water cooling waterpipe 14, and recirculated water is accomplished circulation.Be provided with shunt valve 15 on the female pipe 7 of recirculated water hot water in cooling tower 21, be connected together, recirculated water bypass circuit before being used for unit starting process cooling sector and putting into operation through bypass valve 16 and recirculated water cooling jellyfish pipe 13.Recirculated water in the cooling triangle can lead to sector adjutage 17, discharging valve 18, the mother 19 that discharges water releases ground lower water tank 20.The cooling triangle vertically is arranged in cooling tower 21 bottom periphery.Have 8 cooling sectors 10 in the cooling tower, in actual engineering, can increase and decrease the quantity of cooling sector 10 as required.
When two units all put into operation, the Yin Tanei circulating water pipeline adopted piping-main scheme, so two unit recirculated water cooling coolant-temperature gages are identical.When only a unit puts into operation; Can be as required through open or close sector water intaking valve 9 with outlet valve 12, close or open sector discharging valve 18 and control the operation and the stoppage in transit of respectively cooling off sector; Make the cooling sector of operation be in windward side to improve unit operation efficient, be not in windward side in the winter time to improve the antifreeze ability of unit in summer.
Described cooling tower 21 is indirect Air-cooled Unit two machines of 2x300MW level one tower cooling stacks.The cooling triangle that described cooling sector 10 comprises vertically is arranged in cooling tower 21 bottom periphery.The female pipe of described recirculated water hot water 7, recirculated water cooling jellyfish pipe 13 be the indirect air cooling system circulating water pipeline of 2x300MW level in cooling tower and outside the cooling tower basis 10 meters with interior employing piping-main scheme system.Described sector water intaking valve 9, sector outlet valve 11 and discharging valve 18 are electrically operated valve.
Circulating water pipeline piping-main scheme in the indirect air cooling system tower of this 2x300MW level, system is simple, pipe arrangement is simple, reduce investment outlay, move adjusting flexibly.
Claims (2)
1. machine one tower piping-main scheme indirect cooling system; Two turbine condensers (1), cooling stack (21) and the ground lower water tank (20) that comprise parallel connection; It is characterized in that; In cooling stack (21); Be furnished with cooling sector (10) along even compartment of terrain, outer ring, cooling tower bottom; With the tower center is the cooling sector of recirculated water cooling jellyfish pipe (13) and the annular of the common center of circle female pipe of recirculated water hot water (7) that is furnished with annular respectively, annular female manage (19) that discharge water; The female pipe of recirculated water hot water (7) is communicated with through sector water inlet pipe (8) with cooling sector (10), and sector water inlet pipe (8) is provided with sector water intaking valve (9), and recirculated water cooling jellyfish pipe (13) is communicated with through sector outlet pipe (12) with cooling sector (10); Sector outlet pipe (12) is provided with sector outlet valve (11); The cooling sector female pipe (19) that discharges water is communicated with through sector adjutage (17) with cooling sector (10), and sector adjutage (17) is provided with sector discharging valve (18), cools off the sector mother that discharges water and manages (19) and be communicated with ground lower water tank (20); The recirculated water hot-water line (2) of turbine condenser (1) is communicated with the female pipe of recirculated water hot water (7) of annular; The recirculated water hot-water line (2) of turbine condenser (1) is provided with recirculated water pump line (6), on recirculated water pump line (6), is disposed with water circulating pump inlet valve (3), water circulating pump (4) and water circulating pump outlet valve (5), and the recirculated water cooling water pipe (14) of turbine condenser (1) is communicated with the recirculated water cooling jellyfish pipe (13) of annular; The female pipe of the recirculated water hot water of annular (7) is communicated with through shunt valve (15) with the recirculated water cooling jellyfish pipe (13) of annular, and shunt valve (15) is provided with bypass valve (16).
2. two machines, one tower piping-main scheme indirect cooling system according to claim 1 is characterized in that, is provided with the cooling triangle in the described cooling sector (10), and this cooling triangle is vertically to be arranged on the outer ring, cooling tower bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110217825A CN102322747B (en) | 2011-08-01 | 2011-08-01 | Indirect cooling system of header system consisting of two turbines and one tower |
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| CN201110217825A CN102322747B (en) | 2011-08-01 | 2011-08-01 | Indirect cooling system of header system consisting of two turbines and one tower |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759284A (en) * | 2012-07-13 | 2012-10-31 | 华北电力大学 | Finned tube bundle radiating structure vertically distributed on circumference space of wind cooling tower |
| CN104034181A (en) * | 2014-06-11 | 2014-09-10 | 内蒙古京能盛乐热电有限公司 | Indirect cooling tower based on three-tower-in-one and two-machine in one tower and use method of indirect cooling tower |
| CN104613704A (en) * | 2015-02-04 | 2015-05-13 | 中国电力工程顾问集团西北电力设计院有限公司 | Reversed return circulating water system and arrangement method thereof |
| CN106679493A (en) * | 2017-01-03 | 2017-05-17 | 华电电力科学研究院 | Water distribution method capable of increasing heat exchange efficiency of cooling tower in two-unit one-tower combination |
| CN110160373A (en) * | 2019-05-22 | 2019-08-23 | 内蒙古京能盛乐热电有限公司 | Indirect cool tower summer is solved because environment temperature generation high back pressure leads to the method for limited load |
| CN110779263A (en) * | 2019-11-29 | 2020-02-11 | 中国电力工程顾问集团西北电力设计院有限公司 | Double-working-medium indirect air cooling system and control method thereof |
| CN113124622A (en) * | 2019-12-30 | 2021-07-16 | 中国大唐集团科技工程有限公司 | Device for improving stability of indirect cooling system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759284A (en) * | 2012-07-13 | 2012-10-31 | 华北电力大学 | Finned tube bundle radiating structure vertically distributed on circumference space of wind cooling tower |
| CN104034181A (en) * | 2014-06-11 | 2014-09-10 | 内蒙古京能盛乐热电有限公司 | Indirect cooling tower based on three-tower-in-one and two-machine in one tower and use method of indirect cooling tower |
| CN104613704A (en) * | 2015-02-04 | 2015-05-13 | 中国电力工程顾问集团西北电力设计院有限公司 | Reversed return circulating water system and arrangement method thereof |
| CN106679493A (en) * | 2017-01-03 | 2017-05-17 | 华电电力科学研究院 | Water distribution method capable of increasing heat exchange efficiency of cooling tower in two-unit one-tower combination |
| CN110160373A (en) * | 2019-05-22 | 2019-08-23 | 内蒙古京能盛乐热电有限公司 | Indirect cool tower summer is solved because environment temperature generation high back pressure leads to the method for limited load |
| CN110779263A (en) * | 2019-11-29 | 2020-02-11 | 中国电力工程顾问集团西北电力设计院有限公司 | Double-working-medium indirect air cooling system and control method thereof |
| CN113124622A (en) * | 2019-12-30 | 2021-07-16 | 中国大唐集团科技工程有限公司 | Device for improving stability of indirect cooling system |
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| CN102322747B (en) | 2012-10-10 |
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