CN105115350A - Circulation water supply system and method for high-position cooling tower - Google Patents
Circulation water supply system and method for high-position cooling tower Download PDFInfo
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- CN105115350A CN105115350A CN201510621594.2A CN201510621594A CN105115350A CN 105115350 A CN105115350 A CN 105115350A CN 201510621594 A CN201510621594 A CN 201510621594A CN 105115350 A CN105115350 A CN 105115350A
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Abstract
The invention relates to a circulation water supply system and method for a high-position cooling tower. The circulation water supply system comprises the high-position cooling tower, a water return device, a steam condensation device and a circulation water supply device. The high-position cooling tower comprises a pipeline and a high-position water collection tank. The water return device is communicated with the high-position water collection tank. The steam condensation device comprises a water inlet end and a water outlet end. The water inlet end is communicated with the water return device. The circulation water supply device comprises a vertical diagonal flow pump, a water outlet pipe and a water storage pool. The water storage pool is communicated with the water outlet end. One end of the water outlet pipe is communicated with the vertical diagonal flow pump, and the other end of the water outlet pipe is communicated with the pipeline. By means of the circulation water supply system and method, circulation water supply stability can be ensured, and the pump house construction cost is reduced.
Description
Technical field
The present invention relates to periodical feeding technical field, particularly relate to a kind of circulating water supply system and method for high-order cooling tower.
Background technology
High-order cooling tower is one of heat power equipment important in big power station, and its runnability all has a significant impact the security of power plant and economy.In traditional high-order cooling tower circulating water supply system, hot water sends into hot water dispensing system in tower by pipeline, through sparge pipe again by spraying and splashing facility, is spread across by water on filler; After filler, Cheng Yuzhuan free-electron model enters the high-order water leg to bottom, cooled water is taken away to recirculation pump house, condenser is entered through water circulating pump pressurization, flow into cooling tower again, cause its bank of condenser pipes wall thickness thicker, recirculation pump house takes up an area comparatively large, and aerial part structures height is higher, civil engineering and equipment investment cost high.
Summary of the invention
Based on this, be necessary circulating water supply system and method that a kind of high-order cooling tower is provided, reduce civil engineering and equipment investment cost, economize on resources.
Its technical scheme is as follows:
A circulating water supply system for high-order cooling tower, comprising: high-order cooling tower, and described high-order cooling tower comprises pipeline, high-order water leg; Water recovery apparatus, described water recovery apparatus is connected with described high-order water leg; Condensing plant, described condensing plant comprises water inlet end and water side, and described water inlet end is connected with described water recovery apparatus; Periodical feeding device, described periodical feeding device comprises vertical diagonal flow pump, outlet pipe and cistern, and described cistern is connected with described water side, and outlet pipe one end is connected with described vertical diagonal flow pump, and the other end of described outlet pipe is connected with described pipeline;
Wherein, the water that described high-order water leg is collected can flow into described condensing plant through described water recovery apparatus, then flows into described cistern through described condensing plant, sends water back to high-order cooling tower finally by vertical diagonal flow pump.
Wherein in an embodiment, described high-order water leg relative to the hydraulic pressure that horizontal height produces be greater than water from described high-order water leg flow to described cistern produce water resistance resistance.
Wherein in an embodiment, described high-order water leg is more than 6m relative to horizontal height.
Wherein in an embodiment, relative to the hydraulic pressure that horizontal height produces, to be described high-order water leg deduct water relative to the hydraulic pressure that the preset value of horizontal height produces to cistern to flow to the 2/3-4/3 of the difference of the water resistance resistance that described cistern produces from described high-order water leg doubly.
Wherein in an embodiment, cistern equals described high-order water leg relative to the hydraulic pressure that horizontal height produces and deducts water relative to the hydraulic pressure that the preset value of horizontal height produces and flow to from described high-order water leg the difference of water resistance resistance that described cistern produces.
Wherein in an embodiment, described water recovery apparatus comprises backwater ditch, return pipe, one end of described backwater ditch is connected with described high-order water leg, and the other end of described backwater ditch is connected with one end of described return pipe, and the other end of described return pipe is connected with described water inlet end.
Wherein in an embodiment, described periodical feeding device also comprises filter screen, and described filter screen is arranged at the middle part of described cistern, and described vertical diagonal flow pump is arranged near described outlet pipe.
Wherein in an embodiment, described periodical feeding device also comprises control valve, and described control valve to be communicated with described outlet pipe for controlling described vertical diagonal flow pump or to close.
Wherein in an embodiment, described high-order cooling tower also comprises sparge pipe, multiple receipts tank, described sparge pipe is connected with described pipeline, and be evenly arranged in described high-order cooling tower, described receipts tank is arranged at the top of described high-order water leg, and multiple described receipts tank is evenly distributed to be arranged in described high-order cooling tower.
A periodical feeding method for high-order cooling tower, is characterized in that, comprise step:
(1) piped water supply of high-order cooling tower, cooling water stores in high-order water leg;
(2), after the liquid level of described high-order water leg reaches preset value relative to horizontal height, open valve, cooling water flows into condensing plant through water recovery apparatus;
(3) cooling water flow enters cistern through described condensing plant, and after described cistern liquid level reaches preset value, water circulating pump is started working;
(4), after described water circulating pump work, the water of described cistern sends described high-order cooling tower back to through outlet pipe.
Wherein in an embodiment, in step (2), the liquid level of described high-order water leg is greater than water relative to the hydraulic pressure that the preset value of horizontal height produces and flow to from described high-order water leg the water resistance resistance that described cistern produces.
Wherein in an embodiment, in step (2), the liquid level of high-order water leg is more than 6m relative to the preset value of horizontal height.
Wherein in an embodiment, in step (3), the hydraulic pressure that the liquid level preset value of described cistern produces is that the liquid level of described high-order water leg deducts water to flow to the difference of the water resistance resistance that described cistern produces from described high-order water leg 2/3-1 times relative to the hydraulic pressure that the preset value of horizontal height produces.
Wherein in an embodiment, in step (3), the liquid level that the hydraulic pressure that the liquid level preset value of described cistern produces equals described high-order water leg deducts relative to the hydraulic pressure that the preset value of horizontal height produces water to flow to the water resistance resistance of described cistern generation difference from described high-order water leg.
Wherein in an embodiment, described water circulating pump is vertical diagonal flow pump.
The beneficial effect of the invention described above:
The circulating water supply system of above-mentioned high-order cooling tower, high-order cooling tower operating water level is higher, the water that described high-order water leg is collected can flow into described condensing plant naturally through described water recovery apparatus, described periodical feeding device is flowed into again through described condensing plant, finally utilize vertical diagonal flow pump that the hydraulic pressure in described cistern is entered described outlet pipe, send high-order cooling tower back to through described outlet pipe.The circulating water supply system of above-mentioned high-order cooling tower, can ensure that periodical feeding is stablized, reduce the operating cost of the periodical feeding of high-order cooling tower; Compared with conventional art, the height of described cistern can reduce by 2/3, reduces pump house civil engineering cost; Recirculated cooling water is from flowing to condensing plant simultaneously, and compared with conventional art, condensing plant tube bank wall thickness can suitably reduce, and can reduce condensing plant equipment investment cost.
The periodical feeding method of above-mentioned high-order cooling tower, high-order cooling tower operating water level is higher, when the liquid level of the water that described high-order water leg is collected reaches preset height, open valve cooling water and naturally can flow into described condensing plant through described water recovery apparatus, cistern is flowed into again through described condensing plant, after in cistern, the liquid level of water reaches preset value, after water circulating pump energising work, the water of cistern sends high-order cooling tower back to through outlet pipe.The periodical feeding method of above-mentioned high-order cooling tower, can ensure that periodical feeding is stablized.
Accompanying drawing explanation
Fig. 1 is the circulating water supply system schematic diagram of high-order cooling tower of the present invention;
Fig. 2 is the periodical feeding method flow diagram of high-order cooling tower of the present invention.
Description of reference numerals:
100, high-order cooling tower, 110, pipeline, 120, high-order water leg, 130, sparge pipe, 140, tank is received, 200, water recovery apparatus, 210, backwater ditch, 220, return pipe, 300, condensing plant, 302, water inlet end, 304, water side, 310, condenser, 320, tube connector, 400, periodical feeding device, 410, cistern, 420, vertical diagonal flow pump, 430, outlet pipe, 440, filter screen, 450, control valve.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.Should be understood that, detailed description of the invention described herein only in order to explain the present invention, does not limit protection scope of the present invention.
Shown in Fig. 1, the circulating water supply system of high-order cooling tower of the present invention, comprising: high-order cooling tower 100, and described high-order cooling tower 100 comprises pipeline 110, high-order water leg 120; Water recovery apparatus 200, described water recovery apparatus 200 is connected with described high-order water leg 120; Condensing plant 300, described condensing plant 300 comprises water inlet end 302 and water side 304, and described water inlet end 302 is connected with described water recovery apparatus 200; Periodical feeding device 400, described periodical feeding device 400 comprises vertical diagonal flow pump 410, outlet pipe 430 and cistern 420, described cistern 420 is connected with described water side, described outlet pipe 430 one end is connected with described vertical diagonal flow pump 410, and the other end of described outlet pipe 430 is connected with described pipeline 110; Wherein, the water that described high-order water leg 120 is collected can flow into described condensing plant 300 through water recovery apparatus 200, then flows into described cistern 420 through described condensing plant, sends water back to high-order cooling tower 100 finally by vertical diagonal flow pump 410.
Described high-order cooling tower 100 operating water level is higher, the water that described high-order water leg 120 is collected can flow into described condensing plant 300 naturally through described water recovery apparatus 200, described periodical feeding device 400 is flowed into again through described condensing plant 300, finally utilize vertical diagonal flow pump 410 that the hydraulic pressure in described cistern 420 is entered described outlet pipe 430, send high-order cooling tower 100 back to through described outlet pipe 430.The circulating water supply system of above-mentioned high-order cooling tower, can ensure that periodical feeding is stablized, reduce the operating cost of the periodical feeding of high-order cooling tower, reduces civil engineering and equipment investment, economizes on resources; Compared with conventional art, the height of cistern 420 can reduce by 2/3, reduces pump house civil engineering cost; Can adopt vertical diagonal flow pump, diagonal pumps axial length and filter screen size can reduce, and reduce pump house equipment investment; Recirculated cooling water is from flowing to condensing plant 300 simultaneously, and compared with conventional art, condensing plant 300 is restrained wall thickness and can suitably be reduced, and can reduce condensing plant 300 equipment investment cost.
Described high-order water leg 120 relative to the hydraulic pressure that the preset value of horizontal height produces be greater than water from described high-order water leg 120 flow to described cistern 420 produce water resistance resistance, namely the discharge pressure of described high-order water leg 120 be greater than water from described high-order water leg 120 flow to described cistern 420 produce water resistance resistance sum; Further, described high-order water leg 120 is that water flow to 1.5 times-5 times of the water resistance resistance that described cistern 420 produces from described high-order water leg 120 relative to the hydraulic pressure that the preset value of horizontal height produces, and is preferably 1.5 times, 2 times, 2.5 times, 3 times, 4 times, 5 times.Described high-order water leg 120 is more than 6m relative to horizontal height, is preferably 6m, 10m, 15m, sets according to client's needs and construction cost.
Relative to the hydraulic pressure that horizontal height produces, to be described high-order water leg 120 deduct water relative to the hydraulic pressure that the preset value of horizontal height produces to described cistern 420 to flow to the 2/3-4/3 of the difference of the water resistance resistance that described cistern 420 produces from described high-order water leg 120 doubly, be preferably 2/3 times, 1 times, 4/3 times, the type selecting of described vertical diagonal flow pump carries out comprehensive selection according to described duct height and discharge pressure etc.Can adopt vertical diagonal flow pump, can meet high-order receipts and follow discharge and lift needed for water tower, can reduce again the pump house construction height of described cistern 420, reduce filter screen 440 area, namely pump house running layer absolute altitude can reduce relatively, and pump house construction investment can reduce; Diagonal pumps axial length and extension tube attached length can be reduced simultaneously, reduce circulating pump room cost of equipment.Further, cistern 420 equals described high-order water leg 120 relative to the hydraulic pressure that horizontal height produces and deducts water relative to the hydraulic pressure that the preset value of horizontal height produces and flow to from described high-order water leg 120 difference of water resistance resistance that described cistern 420 produces.
Described condensing plant 300 comprises condenser 310 and tube connector 320.Also be provided with the first supercharging device between described water inlet end and described water recovery apparatus, between described water side and described cistern, be also provided with the second supercharging device, guarantee that cooling water can be back to cistern 420; Further, water inlet end and/or the water side of described condenser 310 can increase water pumper, increase water flow pressure and the flow velocity of turnover condenser.
Described water recovery apparatus 200 comprises backwater ditch 210, return pipe 220, one end of described backwater ditch 210 is connected with described high-order water leg 120, the other end of described backwater ditch 210 is connected with one end of described return pipe 220, and the other end of described return pipe 220 is connected with described water inlet end 302.The guiding that described high-order water leg 120 is convenient in the setting of described backwater ditch 210 is catchmented water outlet; The setting of described return pipe 220 is convenient to be communicated with described condensing plant 300, reduces the loss of cooling water conveying capacity.
Described periodical feeding device 400 also comprises filter screen 440, and described filter screen 440 is arranged at the middle part of described cistern 420, and described vertical diagonal flow pump 410 is arranged near described outlet pipe 430, guarantees that vertical diagonal flow pump is working properly, and assure feed water is clean, avoids blocking pipe.Described periodical feeding device 400 also comprises control valve 450, and described control valve 450 to be communicated with described outlet pipe 430 for controlling described vertical diagonal flow pump 410 or to close.
Described high-order cooling tower 100 also comprises sparge pipe 130, multiple receipts tank 140, described sparge pipe is connected with described pipeline 110, and be evenly arranged in described high-order cooling tower 100, described receipts tank 140 is arranged at the top of described high-order water leg 120, and multiple described receipts tank 140 is evenly distributed to be arranged in described high-order cooling tower 100.The setting of described sparge pipe 130, receipts tank 140, is convenient to improve cooling effect, improves the efficiency of collecting cooling water.
Described high-order water leg 120 is two, the recirculated water that multiple described receipts tank 140 is collected converges in described high-order water leg 120, the liquid level of described high-order water leg 120 can be improved fast, reduce operation stand-by period of circulating water supply system, reach liquid level and can open respective valves and carry out periodical feeding.
Shown in Fig. 2, the periodical feeding method of high-order cooling tower of the present invention, is characterized in that, comprise step:
The piped water supply of the high-order cooling tower of S100, cooling water stores in high-order water leg;
After the liquid level of high-order water leg described in S200 reaches preset value relative to horizontal height, open valve, cooling water flows into condensing plant through water recovery apparatus;
S300 cooling water flow enters cistern through described condensing plant, and after described cistern liquid level reaches preset value, water circulating pump is started working;
After water circulating pump work described in S400, the water of described cistern sends described high-order cooling tower back to through outlet pipe.
The periodical feeding method of above-mentioned high-order cooling tower, high-order cooling tower operating water level is higher, when the liquid level of the water that described high-order water leg is collected reaches preset height, open valve cooling water and naturally can flow into described condensing plant through described water recovery apparatus, cistern is flowed into again through described condensing plant, after in cistern, the liquid level of water reaches preset value, after water circulating pump energising work, the water of cistern sends high-order cooling tower back to through outlet pipe.The periodical feeding method of above-mentioned high-order cooling tower, can ensure that periodical feeding is stablized, and reduces the periodical feeding operating cost of high-order cooling tower, reduces civil engineering and equipment investment, economizes on resources.
In step S200, the liquid level of described high-order water leg is greater than water relative to the hydraulic pressure that the preset value of horizontal height produces and flow to from described high-order water leg the water resistance resistance that described cistern produces, namely the discharge pressure of described high-order water leg is greater than water flow to the generation of described cistern water resistance resistance from described high-order water leg, guarantee periodical feeding is stablized, and reduces operating cost.
In step S200, the liquid level of high-order water leg is more than 6m relative to the preset value of horizontal height, is preferably 6m, 10m, 14.4m, 15m.
In step S300, the hydraulic pressure that described cistern liquid level preset value produces is that the liquid level of described high-order water leg deducts water to flow to the difference of the water resistance resistance that described cistern produces from described high-order water leg 2/3-1 times relative to the hydraulic pressure that the preset value of horizontal height produces, the type selecting of described water circulating pump carries out comprehensive selection according to described duct height and discharge pressure etc., vertical diagonal flow pump can be adopted, its diagonal pumps axial length can be reduced, reduce costs.
In step S300, the liquid level that the hydraulic pressure that described cistern liquid level preset value produces equals described high-order water leg deducts relative to the hydraulic pressure that the preset value of horizontal height produces water to flow to the water resistance resistance of described cistern generation difference from described high-order water leg.
Described water circulating pump is vertical diagonal flow pump, vertical diagonal flow pump can be adopted, high-order receipts can be met and needed for water tower, follow discharge and lift, the pump house construction height of described cistern 420 can be reduced again, reduce filter screen 440 area, namely pump house running layer absolute altitude can reduce relatively, and pump house construction investment can reduce; Diagonal pumps axial length and extension tube attached length can be reduced simultaneously, reduce circulating pump room cost of equipment.Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a circulating water supply system for high-order cooling tower, is characterized in that, comprising:
High-order cooling tower, described high-order cooling tower comprises pipeline, high-order water leg;
Water recovery apparatus, described water recovery apparatus is connected with described high-order water leg;
Condensing plant, described condensing plant is provided with water inlet end, water side, and described water inlet end is connected with described water recovery apparatus; And
Periodical feeding device, described periodical feeding device comprises vertical diagonal flow pump, outlet pipe and cistern, and described cistern is connected with described water side, and outlet pipe one end is connected with described vertical diagonal flow pump, and the other end of described outlet pipe is connected with described pipeline;
Wherein, the water that described high-order water leg is collected can flow into described condensing plant through described water recovery apparatus, then flows into described cistern through described condensing plant, sends water back to high-order cooling tower finally by vertical diagonal flow pump.
2. the circulating water supply system of high-order cooling tower according to claim 1, is characterized in that, described high-order water leg relative to the hydraulic pressure that horizontal height produces be greater than water from described high-order water leg flow to described cistern produce water resistance resistance.
3. the circulating water supply system of high-order cooling tower according to claim 1, it is characterized in that, relative to the hydraulic pressure that horizontal height produces, to be described high-order water leg deduct water relative to the hydraulic pressure that the preset value of horizontal height produces to cistern to flow to the 2/3-4/3 of the difference of the water resistance resistance that described cistern produces from described high-order water leg doubly.
4. the circulating water supply system of high-order cooling tower according to claim 1, it is characterized in that, described water recovery apparatus comprises backwater ditch, return pipe, one end of described backwater ditch is connected with described high-order water leg, the other end of described backwater ditch is connected with one end of described return pipe, and the other end of described return pipe is connected with described water inlet end.
5. the circulating water supply system of the high-order cooling tower according to any one of claim 1-4, is characterized in that, described periodical feeding device also comprises filter screen, and described filter screen is arranged at the middle part of described cistern, and described vertical diagonal flow pump is arranged near described outlet pipe.
6. a periodical feeding method for high-order cooling tower, is characterized in that, comprise step:
(1) piped water supply of high-order cooling tower, cooling water stores in high-order water leg;
(2), after the liquid level of described high-order water leg reaches preset value relative to horizontal height, open valve, cooling water flows into condensing plant through water recovery apparatus;
(3) cooling water flow enters cistern through described condensing plant, and after described cistern liquid level reaches preset value, water circulating pump is started working;
(4), after described water circulating pump work, the water of described cistern sends described high-order cooling tower back to through outlet pipe.
7. the periodical feeding method of high-order cooling tower according to claim 6, it is characterized in that, in step (2), the liquid level of described high-order water leg is greater than water relative to the hydraulic pressure that the preset value of horizontal height produces and flow to from described high-order water leg the water resistance resistance that described cistern produces.
8. the periodical feeding method of high-order cooling tower according to claim 6, is characterized in that, in step (2), the liquid level of described high-order water leg is more than 6m relative to the preset value of horizontal height.
9. the periodical feeding method of high-order cooling tower according to claim 6, it is characterized in that, in step (3), the hydraulic pressure that the liquid level preset value of described cistern produces is that the liquid level of described high-order water leg deducts water to flow to the difference of the water resistance resistance that described cistern produces from described high-order water leg 2/3-1 times relative to the hydraulic pressure that the preset value of horizontal height produces.
10. the periodical feeding method of high-order cooling tower according to claim 6, it is characterized in that, in step (3), the liquid level that the hydraulic pressure that the liquid level preset value of described cistern produces equals described high-order water leg deducts relative to the hydraulic pressure that the preset value of horizontal height produces water to flow to the water resistance resistance of described cistern generation difference from described high-order water leg.
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| CN201510621594.2A CN105115350A (en) | 2015-09-24 | 2015-09-24 | Circulation water supply system and method for high-position cooling tower |
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| CN201510621594.2A CN105115350A (en) | 2015-09-24 | 2015-09-24 | Circulation water supply system and method for high-position cooling tower |
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| CN201510621594.2A Pending CN105115350A (en) | 2015-09-24 | 2015-09-24 | Circulation water supply system and method for high-position cooling tower |
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Application publication date: 20151202 |
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