CN205002623U - Take direct current cooling water supply system of natural draft cooling tower cooling - Google Patents
Take direct current cooling water supply system of natural draft cooling tower cooling Download PDFInfo
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- CN205002623U CN205002623U CN201520642062.2U CN201520642062U CN205002623U CN 205002623 U CN205002623 U CN 205002623U CN 201520642062 U CN201520642062 U CN 201520642062U CN 205002623 U CN205002623 U CN 205002623U
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Abstract
The utility model discloses a take direct current cooling water supply system of natural draft cooling tower cooling, including heat transfer system and the cooling system who communicates each other, heat transfer system includes the intake with water source intercommunication, with the water intake device of intake intercommunication, with an at least inlet channel of water intake device intercommunication, and with one the inlet channel corresponds the heat transfer device of intercommunication, cooling system include with heat transfer device corresponds the drainage pipe of intercommunication, just drainage pipe is last to be provided with an at least natural draft cooling tower, and with the outlet of drainage pipe intercommunication, outlet and peripheral water intercommunication. The desirable low warm water of this direct current cooling water supply system avoids the temperature drainage to influence peripheral water as the unit cooling water, prevents that the cooling tower sewer from leading to the fact the pollution to assault to peripheral water, solves direct current cooling water supply system and gets the problem that the outlet set up the difficulty, and the solution results in the problem of site selection difficulty because of the water environment problem.
Description
Technical field
The utility model relates to cooling hydrotechny field, power plant, particularly a kind of direct cooling water system with cooling stack cooling.
Background technology
In the abundant area of water resource, particularly coastal and Hekou Area, thermal power plant/nuclear power plant's unit adopts direct cooling water system usually, is conducive to reducing unit back pressuce, improving unit efficiency, reduces coal consumption.Direct cooling water system is directly fetched water and to be cooled unit by condenser unit from water body, and the draining after heat exchange directly enters water body.Through condenser heat exchange, water intaking and the draining temperature difference are about about 8 DEG C.Once-through cooling system directly gets water at low temperature from the water source such as surface water or seawater, is promoted to condenser and participates in heat exchange, cool unit by water circulating pump.Complete the warm water discharge after heat exchange, enter water source by discharge outlet.But this technology has following shortcoming, namely taking and discharging temperature rise is about 8 DEG C, and warm water discharge produces thermal pollution to water body, affects existence biological in water body; For avoiding draining on the impact of water intaking water temperature, intake and discharge outlet difficult arrangement; Plant site selection limits by water environment conditions, is difficult to choose suitable factory site.
Therefore, coastal existing many power plant start to consider to select the circulating cooling water system being with cooling tower.Circulating cooling water system adopts cooling tower to after being cooled by the draining after condenser, continues to enter condenser and participates in heat exchange.The make-up water that only need take a morsel from water body, supplements cooling tower because of evaporation, the water loss of wind and blowdown.For the water concentration keeping recirculated water to cause because of evaporation, wind etc. losses is more next high, for preventing condenser internal incrustation from affecting heat exchange, antisludging agent need be added in recirculated water, needing irregularly to discharge certain condensed water simultaneously.But this technology has following shortcoming, owing to adopting cooling tower to cool, by the impact of wet-bulb temperature, enter the water temperature comparatively air ' s wet bulb temperature temperature height about 5 ~ 8 DEG C of condenser, more direct temperature of fetching water from water body is high; Cooling tower sewer is condensed water, when entering surrounding body, pollutes impact to water body; After the process of cooling tower sewer during reuse, water quality is poor, increases construction investment; Circulating ratio is higher, and need add antisludging agent and prevent condenser fouling, operating cost is high.
Utility model content
Based on this, for the problems referred to above, the utility model proposes a kind of direct cooling water system with cooling stack cooling, favorable low temperature water is as unit cooling water, warm water discharge is avoided to affect surrounding body, prevent cooling tower sewer from polluting impact to surrounding body, solve the problem that direct cooling water system water intake and outlet arranges difficulty, solve because water environmental problems causes the problem of plant site selection difficulty.
Its technical scheme is as follows:
With a direct cooling water system for cooling stack cooling, comprise the heat-exchange system and cooling system that are interconnected; Described heat-exchange system comprises the intake be communicated with water source, the water fetching device be communicated with described intake, at least one inlet channel be communicated with described water fetching device, and with a corresponding heat-exchanger rig be communicated with of described inlet channel; Described cooling system comprises the drainage pipeline that be communicated with corresponding to described heat-exchanger rig, and described drainage pipeline is provided with at least one cooling stack; And the discharge outlet to be communicated with described drainage pipeline, described discharge outlet is communicated with surrounding body.
Utilize intake and water fetching device directly from water source, to obtain low temperature surface water or seawater, delivered in heat-exchanger rig by inlet channel after pressurization and carry out heat exchange, generating set is cooled.The temperature rise water obtained after water at low temperature heat exchange is sent in cooling stack by drainage pipeline, utilizes air to carry out heat exchange cooling to temperature rise water and obtains cold type water, be directly directly discharged in surrounding body by discharge outlet by cold type water.Substantially can meet water standard through cooling stack cooled cold type water water temperature, can directly enter in surrounding body.And cooling stack can design according to the permission conditions of discharge of surrounding body ecological environment thermal capacity.
Below its further technical scheme is described:
Further, described intake and described discharge outlet are arranged at the same side of generating set, and described heat-exchanger rig and described cooling stack are juxtaposed between described intake and described discharge outlet.Intake and discharge outlet are arranged at the same side, the two can be arranged in same water body region, because through cooling stack cooled cold type water and natural water water temperature close, little on intake water intaking impact, therefore generating set cooling water addressing demand can be met in the place that cooling water is had abundant water resources, addressing is relatively convenient and simple.In addition, heat-exchanger rig, cooling stack and generating set are set together, structure arrangement is compacter, can save the area.
Further, described cooling stack is arranged on pond or is directly arranged on the water surface.By cooling stack construction on pond, can convergence be carried out to temperature rise water and naturally cool.And cooling stack is directly built on the water surface, the occupation of land of cooling stack can be reduced further.
Further, comprise two described inlet channels be communicated with described water fetching device, inlet channel described in every bar is connected with a described heat-exchanger rig, each described heat-exchanger rig is connected with a described drainage pipeline, and every bar drainage pipeline is provided with at least one cooling stack.According to circumstances, inlet channel can be set to two, can heat exchange cooling be carried out to two generating sets simultaneously or twice heat exchange cooling be carried out to same generating set, improve generating set heat exchange efficiency.And at least one cooling stack is set on every bar drainage pipeline, heat exchange cooling can be carried out independently to the temperature rise water in every bar drainage pipeline, and the cooling stack of suitable quantity and size is set according to actual conditions, heat exchange cooling is carried out to temperature rise water, makes the cold type coolant-temperature gage access expansion water temperature of discharge as far as possible.
Further, described water fetching device comprises the water pump of multiple parallel connection, and settles the circulating pump room of described water pump.By arranging the water pump of multiple parallel connection, can water withdrawal be strengthened, meeting water intaking demand, and when some water pump cisco unity malfunction, also can ensure that water withdrawal is normal.
Further, each described heat-exchanger rig comprises two condensers of connecting be connected with generating set, and two flow pipes be communicated with each described condenser, and described flow pipe is communicated with described inlet channel and described drainage pipeline.By being arranged in series two even multiple condensers, repeatedly can cooling generating set, strengthening the cooling effect to generating set.And, each condenser is communicated with two even many flow pipes, makes inflow sufficient, can cooling procedure be accelerated.And every bar flow pipe is separate, though wherein one break down and also can ensure that cooling can also normally be carried out.
Further, flow pipe described in every bar is provided with solenoid electric valve, described solenoid electric valve is positioned at described condenser front end.By arranging solenoid electric valve on flow pipe, opening and closing and adjustment can be carried out to flow pipe, realizing the control to condenser inflow, to reach best cooling effect.
The utility model has following outstanding beneficial effect:
(1) directly can obtain low-temperature cooling water from water source, reduce unit operation back pressure, improve unit efficiency, reach the object of energy-saving and emission-reduction;
(2) the cold type water after cooling, water temperature access expansion water body water temperature, avoids once-through cooling system warm water discharge in conventional art and, to the thermal pollution of receiving water body water environment, is conducive to protecting water ecological environment;
(3) after cooling stack cooling, water in the entire system naturally circulation can not produce concentrated, water quality does not change substantially, can not discharge condensed water, can not produce to pollute to receiving water body to impact;
(4) water concentration is substantially unchanged, therefore without the need to adding antisludging agent, can reduce operating cost;
(5) after cooling, temperature at discharging condensate does not have an impact substantially to water intaking temperature, and layout of water intakes and outlets difficulty reduces greatly;
(6) draining after cooling can meet water standard and emission request substantially, greatly reduces thermal power plant/Site Selection for Nuclear Power Stations difficulty;
(7) for little unit upgrading project, cooling tower can cancel pond, directly builds on the water surface, solves a difficult problem for lack of space.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the direct cooling water system with cooling stack cooling described in the utility model embodiment.
Description of reference numerals: 100-intake, 200-water fetching device, 210-water pump, 220-circulating pump room, 300-inlet channel, 400-heat-exchanger rig, 410-flow pipe, 420-condenser, 430-solenoid electric valve, 500-drainage pipeline, 600-cooling stack, 700-discharge outlet.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figure 1, a kind of direct cooling water system with cooling stack cooling, comprises the heat-exchange system and cooling system that are interconnected.Heat-exchange system comprises the intake 100 be communicated with water source, the water fetching device 200 be communicated with intake 100, at least one inlet channel 300 be communicated with water fetching device 200, and with a corresponding heat-exchanger rig 400 be communicated with of inlet channel 300.Cooling system comprises the drainage pipeline 500 that be communicated with corresponding to heat-exchanger rig 400, and drainage pipeline 500 is provided with at least one cooling stack 600, and the discharge outlet 700 be communicated with drainage pipeline 600, and discharge outlet 700 is communicated with surrounding body.
Utilize intake 100 and water fetching device 200 directly from water source, to obtain low temperature surface water or seawater, delivered in heat-exchanger rig 200 by inlet channel 300 after pressurization and carry out heat exchange, generating set is cooled.The temperature rise water obtained after water at low temperature heat exchange is sent in cooling stack 600 by drainage pipeline 500, utilizes air to carry out heat exchange cooling to temperature rise water and obtains cold type water, be directly directly discharged in surrounding body by discharge outlet 700 by cold type water.Substantially can meet water standard through cooling stack 600 cooled cold type water water temperature, can directly enter in surrounding body.And cooling stack 600 can design according to the permission conditions of discharge of surrounding body ecological environment thermal capacity.
In one embodiment, the direct cooling water system of above-mentioned band cooling stack cooling comprises two inlet channels 300 be communicated with water fetching device 200, every bar inlet channel 300 is connected with a heat-exchanger rig 200, each heat-exchanger rig 200 is connected with a drainage pipeline 500, and every bar drainage pipeline 500 is provided with at least one cooling stack 600.According to circumstances, inlet channel 300 can be set to two, can heat exchange cooling be carried out to two generating sets simultaneously or twice heat exchange cooling be carried out to same generating set, improve generating set heat exchange efficiency.And at least one cooling stack 600 is set on every bar drainage pipeline 500, heat exchange cooling can be carried out independently to the temperature rise water in every bar drainage pipeline 500, and the cooling stack 600 of suitable quantity and size is set according to actual conditions, heat exchange cooling is carried out to temperature rise water, makes the cold type coolant-temperature gage access expansion water temperature of discharge as far as possible.In addition, also inlet channel can be set to many, other appliance arrangements and inlet channel are mutually corresponding.
And, water fetching device 200 can be made to comprise the water pump 210 of multiple parallel connection, and settle the circulating pump room 220 of water pump 210.By arranging the water pump 210 of multiple parallel connection, can water withdrawal be strengthened, meeting water intaking demand, and when some water pump cisco unity malfunction, also can ensure that water withdrawal is normal.Circulating pump room 220 is set, centralized Control and maintenance can be carried out to all water pumps 210.
And each heat-exchanger rig 400 comprises two condensers of connecting 420 be connected with generating set, and two flow pipes 410 be communicated with each condenser 420, flow pipe 410 is communicated with inlet channel 300 and drainage pipeline 500.By being arranged in series two even multiple condensers 420, repeatedly can cooling generating set, strengthening the cooling effect to generating set.And, each condenser 420 is communicated with two even many flow pipes 410, makes inflow sufficient, can cooling procedure be accelerated.And every bar flow pipe 410 is separate, though wherein one break down and also can ensure that cooling can also normally be carried out.Further, every bar flow pipe 410 is provided with solenoid electric valve 430, solenoid electric valve 430 is positioned at condenser 420 front end.By arranging solenoid electric valve 430 on flow pipe 410, opening and closing and adjustment can be carried out to flow pipe 410, realizing the control to condenser 420 inflow, to reach best cooling effect.
In addition, above-mentioned intake 100 and discharge outlet 700 can be arranged at the same side of generating set, and heat-exchanger rig 400 and cooling stack 600 are juxtaposed between intake 100 and discharge outlet 700.Intake 100 and discharge outlet 700 are arranged at the same side, the two can be arranged in same water body region, because through cooling stack 600 cooled cold type water and natural water water temperature close, impact is fetched water not quite to intake 100, therefore generating set cooling water addressing demand can be met in the place that cooling water is had abundant water resources, addressing is relatively convenient and simple.In addition, heat-exchanger rig, cooling stack and generating set are set together, structure arrangement is compacter, can save the area.
In addition, can cooling stack 600 be arranged on pond or directly be arranged on the water surface.Cooling stack 600 is built on pond, can convergence be carried out to temperature rise water and naturally cool.And cooling stack 600 is directly built on the water surface, the occupation of land of cooling stack can be reduced further.
The direct cooling water system of the band cooling stack cooling that the utility model provides, intake by being communicated with water source directly obtains low-temperature cooling water from water source, by low-temperature cooling water, generating set is cooled, reduce generating set and run back pressure, improve unit efficiency, reach the object of energy-saving and emission-reduction; The temperature rise water obtained after cooling generating set, is becoming cold type water, the water temperature access expansion water body water temperature of cold type water after cooling stack cooling.For surface water, the environment water temperature change Zhou Pingjun maximum temperature rise that discharge water causes is no more than 1 DEG C; For seawater, the seawater temperature rise caused for 1,2 class water bodys is no more than 1 DEG C summer, and other seasons are no more than 2 DEG C, and the seawater temperature rise caused for 3,4 class water bodys is no more than 4 DEG C.Thus to avoid in conventional art once-through cooling system warm water discharge to the thermal pollution of receiving water body water environment, be conducive to protecting water ecological environment.Both can drive low-temperature cooling water, can not affect greatly water environment again.
In addition, after cooling stack cooling, the cold type water obtained in the entire system naturally circulation can not produce concentrated, water quality does not change substantially, can not discharge condensed water, can not produce to pollute to receiving water body to impact; In cooling procedure, water concentration is substantially unchanged, therefore without the need to adding antisludging agent, can reduce operating cost; After cooling, temperature at discharging condensate does not have an impact substantially to water intaking temperature, and layout of water intakes and outlets difficulty reduces greatly; Draining after cooling can meet water standard and emission request substantially, greatly reduces thermal power plant/Site Selection for Nuclear Power Stations difficulty; For little unit upgrading project, cooling tower can cancel pond, directly builds on the water surface, solves a difficult problem for lack of space.
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 utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (7)
1. the direct cooling water system with cooling stack cooling, is characterized in that, comprise the heat-exchange system and cooling system that are interconnected;
Described heat-exchange system comprises the intake be communicated with water source, the water fetching device be communicated with described intake, at least one inlet channel be communicated with described water fetching device, and with a corresponding heat-exchanger rig be communicated with of described inlet channel;
Described cooling system comprises the drainage pipeline that be communicated with corresponding to described heat-exchanger rig, and described drainage pipeline is provided with at least one cooling stack; And the discharge outlet to be communicated with described drainage pipeline, described discharge outlet is communicated with surrounding body.
2. the direct cooling water system of band cooling stack cooling according to claim 1, it is characterized in that, described intake and described discharge outlet are arranged at the same side of generating set, and described heat-exchanger rig and described cooling stack are juxtaposed between described intake and described discharge outlet.
3. the direct cooling water system of band cooling stack cooling according to claim 1, it is characterized in that, described cooling stack is arranged on pond or is directly arranged on the water surface.
4. the direct cooling water system of the band cooling stack cooling according to claim 1-3 any one, it is characterized in that, comprise two described inlet channels be communicated with described water fetching device, inlet channel described in every bar is connected with a described heat-exchanger rig, each described heat-exchanger rig is connected with a described drainage pipeline, and every bar drainage pipeline is provided with at least one cooling stack.
5. the direct cooling water system of band cooling stack cooling according to claim 4, it is characterized in that, described water fetching device comprises the water pump of multiple parallel connection, and settles the circulating pump room of described water pump.
6. the direct cooling water system of band cooling stack cooling according to claim 4, it is characterized in that, each described heat-exchanger rig comprises two condensers of connecting be connected with generating set, and two flow pipes to be communicated with each described condenser, described flow pipe is communicated with described inlet channel and described drainage pipeline.
7. the direct cooling water system of band cooling stack cooling according to claim 6, it is characterized in that, flow pipe described in every bar is provided with solenoid electric valve, described solenoid electric valve is positioned at described condenser front end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520642062.2U CN205002623U (en) | 2015-08-24 | 2015-08-24 | Take direct current cooling water supply system of natural draft cooling tower cooling |
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| CN201520642062.2U CN205002623U (en) | 2015-08-24 | 2015-08-24 | Take direct current cooling water supply system of natural draft cooling tower cooling |
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| CN205002623U true CN205002623U (en) | 2016-01-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043133A (en) * | 2015-08-24 | 2015-11-11 | 中国能源建设集团广东省电力设计研究院有限公司 | Once-through cooling water supply system with natural ventilation cooling towers for cooling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043133A (en) * | 2015-08-24 | 2015-11-11 | 中国能源建设集团广东省电力设计研究院有限公司 | Once-through cooling water supply system with natural ventilation cooling towers for cooling |
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