CN104930779A - Low-energy-consumption circulating cooling water system used for removing backwater excess pressure and transformation method - Google Patents
Low-energy-consumption circulating cooling water system used for removing backwater excess pressure and transformation method Download PDFInfo
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- CN104930779A CN104930779A CN201510354220.9A CN201510354220A CN104930779A CN 104930779 A CN104930779 A CN 104930779A CN 201510354220 A CN201510354220 A CN 201510354220A CN 104930779 A CN104930779 A CN 104930779A
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- water
- cooling water
- cooling
- heat exchanger
- backwater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
- F25D1/02—Devices using naturally cold air or cold water using naturally cold water, e.g. household tap water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a low-energy-consumption circulating cooling water system used for removing backwater excess pressure and a transformation method. The low-energy-consumption circulating cooling water system comprises a connecting pipeline used for conveying circulating water, a heat exchanger, a cooling tower and a cooling water pump, wherein the heat exchanger, the cooling tower and the cooling water pump are connected in sequence in the circulating water flow direction through a connecting pipeline. According to the low-energy-consumption circulating cooling water system used for removing the backwater excess pressure and the transformation method, the water outlet end of the heat exchanger and the water inlet end of a water distribution device of the cooling tower can be in a non-backwater excess pressure operation state under the natural smooth condition, the low-energy-consumption cooling water pump matched with the system is arranged, and therefore the purposes of improving the efficiency of the circulating cooling water system and reducing energy consumption are achieved.
Description
Technical field
The present invention relates to and belong to energy technology field, being specifically related to a kind of low energy consumption recirculating cooling water system and remodeling method based on eliminating backwater overbottom pressure.
Background technology
In industrial circulating cooling water system, be in high-order heat exchanger water side, generally higher than the height of cooling tower water-distributing device water inlet end.On this section of water return pipeline, produce certain backwater overbottom pressure thus, cause energy dissipation.
At present, to the utilization of this part backwater overbottom pressure, if patent (CN 203719456 U) utilizes recirculated water backwater overbottom pressure to drive heat radiation air exhauster by the hydraulic turbine, saving fan energy consumption makes recirculating cooling water system energy-conservation, or patent (ZL200820301588) is after being mechanical energy by backwater Conversion of Energy, is being translated into electric energy further.These methods all reasonably make use of part backwater overbottom pressure, do not make recirculating cooling water system backwater overbottom pressure minimum, and there is greater loss in energy sources conversion.Patent (CN 202734380 U) is by the heat transfer effect requirement configuration low level water pump of low level heat exchanger, and before high-order heat exchanger, increase the heat transfer effect that booster water pump ensures high-order heat exchanger, only be reduction of water circulating pump energy consumption, but recirculating cooling water system operation energy consumption is minimized.
Meanwhile, if if recirculating cooling water system exists backwater overbottom pressure, system is difficult to realize automatic hydraulic power balance, is unfavorable for the variable parameter operation of transition season, produces energy waste.
Summary of the invention
The problem that the object of the invention is to for the backwater overbottom pressure meeting produce power waste of recirculating cooling water system provides a kind of low energy consumption recirculating cooling water system and remodeling method based on eliminating backwater overbottom pressure with energy-saving effect.
The present invention solves the first technical scheme that its technical problem adopts: a kind of low energy consumption Retrofit of Circulation Cooling Water System method based on eliminating backwater overbottom pressure, comprise connecting pipe for transmitting recirculated water and along circular flow direction successively by heat exchanger that connecting pipe connects, cooling tower and cooling water pump, described connecting pipe comprises cooling tower water side to the inlet pipeline of heat exchanger water inlet end and heat exchanger water side to the water return pipeline of cooling tower water-distributing device water inlet end, it is characterized in that: under naturally unimpeded condition, be in backwater between described heat exchanger water side and cooling tower water-distributing device water inlet end without overbottom pressure running status, described cooling water pump is the low energy consumption cooling water pump adapted with system.
Further, naturally unimpeded between described heat exchanger water side and cooling tower water-distributing device water inlet end is that on this section of water return pipeline, valve is opened and the device of the unmanned extra increase circulation resistance for arranging naturally, as: the valve being in adjustment state, the hydraulic turbine, the resistance components such as the resistance tube of artificial setting, for the air be conducive in cooling recirculation system is discharged, the setting height(from bottom) of cooling tower water-distributing device water inlet end, should exceed 5 meters, heat exchanger water side usually.
Further, under naturally unimpeded condition, backwater is in without overbottom pressure running status between described heat exchanger water side and cooling tower water-distributing device water inlet end, its implementation is improve cooling tower setting height(from bottom) until backwater overbottom pressure is eliminated, maybe the heat exchanger producing backwater overbottom pressure is arranged independently cooling system, make it not produce backwater overbottom pressure, maybe the heat exchanger setting height(from bottom) producing backwater overbottom pressure part is reduced, makes it not produce backwater overbottom pressure.
Further, the described low energy consumption cooling water pump adapted with system is the water pump that the actual process for cooling demand of lift, flow and system matches.
Further, the water pump that the actual process for cooling demand of described lift, flow and system matches, its implementation is the supporting change pole motor of water pump, or servomotor, or permanent magnetism velocity modulation electric engine, or is provided with the common motor of frequency converter; Or control to run quantity with the low energy consumption cooling water pump that system adapts by cooling water temperature, the control device of operating mode is connected; Or adopt the water pump selection of different flow, lift.
The present invention solves the second technical scheme that its technical problem adopts: a kind of low energy consumption recirculating cooling water system based on eliminating backwater overbottom pressure, comprise connecting pipe for transmitting recirculated water and along circular flow direction successively by heat exchanger that connecting pipe connects, cooling tower and cooling water pump, described connecting pipe comprises cooling tower water side to the inlet pipeline of heat exchanger water inlet end and heat exchanger water side to the water return pipeline of cooling tower water-distributing device water inlet end, it is characterized in that: the setting height(from bottom) of described cooling tower water-distributing device water inlet end is not less than the setting height(from bottom) of high-order heat exchanger water side, described cooling water pump is energy-conservation cooling water pump.
Further, described energy-conservation cooling water pump is supportingly have the variable parameter operation device that lift, flow and system cools process requirements are matched.
Further, described variable parameter operation device is the supporting change pole motor of water pump, or servomotor, or permanent magnetism velocity modulation electric engine, or is provided with the common motor of frequency converter.
Further, described energy-conservation cooling water pump is for be connected with control device.
Compared with prior art, the present invention has following beneficial effect: investment economy of the present invention is reasonable, be in without overbottom pressure running status by making the recirculated water in recirculating cooling water system water return pipeline under naturally unimpeded condition, and be equipped with the low energy consumption cooling water pump adapted with system, to reduce energy consumption, reach the order ground that recirculating cooling water system is energy-conservation.
Accompanying drawing explanation
Fig. 1 is that the present invention is a kind of based on system schematic before the low energy consumption Retrofit of Circulation Cooling Water System of elimination backwater overbottom pressure;
Fig. 2 is that the present invention is a kind of based on one of low energy consumption Retrofit of Circulation Cooling Water System method eliminating backwater overbottom pressure: the low energy consumption recirculating cooling water system schematic diagram reducing heat exchanger setting height(from bottom);
Fig. 3 is a kind of low energy consumption Retrofit of Circulation Cooling Water System method two based on eliminating backwater overbottom pressure of the present invention: the low energy consumption recirculating cooling water system schematic diagram improving cooling tower setting height(from bottom);
Fig. 4 is a kind of low energy consumption Retrofit of Circulation Cooling Water System method three based on eliminating backwater overbottom pressure of the present invention: high-order heat exchanger arranges the low energy consumption recirculating cooling water system schematic diagram of independent cooling system;
Wherein: 1, low level heat exchanger, 2, high-order heat exchanger, 3, by-pass valve control, 4, low level cooling tower, 5, collecting-tank, 6, high-order cooling tower, 7, cooling water pump, 8, pipeline, 9 the low energy consumption cooling water pump, adapted with system.
Detailed description of the invention
As shown in Figure 1, for transforming front system schematic, comprise recirculated water can be made successively to be communicated with heat exchanger (low level heat exchanger 1, high-order heat exchanger 2), by-pass valve control 3, low level cooling tower 4, cooling water pump 7 and connecting pipe 8 etc.
At Fig. 1,2,3, in 4, described high-order heat exchanger 2, refers to that the setting height(from bottom) of heat exchanger water side exceedes the heat exchanger of cooling tower water-distributing device water inlet end, described low level heat exchanger 1, refers to the heat exchanger of the setting height(from bottom) of heat exchanger water side lower than cooling tower water-distributing device water inlet end; Described cooling tower is all containing collecting-tank 5; The described low energy consumption cooling water pump 9 adapted with system refers to, water pump have employed variable parameter operation device or form, as: adopt change pole motor, or servomotor, or permanent magnetism velocity modulation electric engine, or be provided with the common motor of frequency converter; Or control to run quantity with the low energy consumption cooling water pump that system adapts by cooling water temperature, the control device of operating mode is connected; Or adopt the form of different flow, lift water pump selection.
At Fig. 1,2,3, in 4, describedly to be in without overbottom pressure running status under naturally unimpeded condition, to refer on the water return pipeline between heat exchanger water side to cooling tower water-distributing device water inlet end, valve is opened and unmanned for arranging the extra device increasing circulation resistance naturally, as: the valve being in adjustment state, the hydraulic turbine, the resistance components such as the artificial resistance tube arranged, as: the valve being in adjustment state, the hydraulic turbine, the resistance components such as the artificial resistance tube arranged.For the air be conducive in cooling recirculation system is discharged, the setting height(from bottom) of cooling tower water-distributing device water inlet end, should exceed 5 meters, heat exchanger water side usually.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail:
Case study on implementation one, as shown in Figure 2, present case reduces the low energy consumption recirculating cooling water system schematic diagram of heat exchanger setting height(from bottom), by being in, high-order high-order heat exchanger 2 is consistent or close with low level heat exchanger 1 setting height(from bottom), and making the water side of low level heat exchanger 1 and high-order heat exchanger 2 all lower than the height of low level cooling tower 4 water-distributing device water inlet end, this structure makes the recirculated water in recirculating cooling water system water return pipeline be in without overbottom pressure running status under naturally unimpeded condition.Original cooling water pump 7 is replaceable is the low energy consumption cooling water pump 9 adapted with system.
Case study on implementation two, as shown in Figure 3, present case improves the low energy consumption recirculating cooling water system schematic diagram of cooling tower setting height(from bottom), low level cooling tower 4 is transformed into high-order cooling tower 6, make the water-distributing device water inlet end setting height(from bottom) of high-order cooling tower 6 be not less than the setting height(from bottom) of high-order heat exchanger 2 water side, the recirculated water in the water return pipeline of recirculating cooling water system is in without overbottom pressure running status under naturally unimpeded condition.Original cooling water pump 7 is replaced by the low energy consumption cooling water pump 9 adapted with system.
Case study on implementation three, as shown in Figure 4, present case is the low energy consumption recirculating cooling water system schematic diagram high-order heat exchanger being arranged independent cooling system, this case is that (system architecture in the present embodiment comprises low level heat exchanger 1 to multiple heat exchanger structure, high-order heat exchanger 2), by high-order heat exchanger 2, by-pass valve control 3, high-order cooling tower 6, low energy consumption cooling water pump 9 grade adapted with system forms independent loops cooling system, the water side of high-order heat exchanger 2 is lower than the height of the water-distributing device water inlet end of high-order cooling tower 6, make to be in without backwater overbottom pressure running status under naturally unobstructed condition in this component loops cooling water system water return pipeline, meanwhile, another autonomous system that low level heat exchanger 1 and low level cooling tower 4 are formed, its operation and connected mode similar to high-order heat exchanger 2.Original cooling water pump 7 is replaced by the low energy consumption cooling water pump 9 adapted with system.
Case study on implementation one, two, three, three kinds of low energy consumption recirculating cooling water systems based on elimination backwater overbottom pressure are that in described system, heat exchanger is provided with one or more, described multiple heat exchanger is parallel with one another and setting height(from bottom) is equal, or described multiple heat exchanger is independently connected with a cooling tower, the setting height(from bottom) of cooling tower water-distributing device water inlet end is not less than the setting height(from bottom) of high-order heat exchanger water side.
Case study on implementation one, two, three, by making the backwater of recirculating cooling water system, be under naturally unimpeded condition without overbottom pressure running status, eliminate the energy consumption that former recirculating cooling water system backwater overbottom pressure produces, and be equipped with the low energy consumption cooling water pump 9 adapted with system, reduce energy consumption, reach the order ground that recirculating cooling water system is energy-conservation.
In above-mentioned case study on implementation, connecting pipe 8 is the water stream channel of composition circulating cooling system, and containing the necessary device such as connecting hose, valve, instrument, remote auto control, accompanying drawing does not show.
The present invention can be built project and provides reducing energy consumption, also can provide energy-saving design for grassroot project, is suitable for industry and central air-conditioning hydrologic cycle cooling system.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. the low energy consumption Retrofit of Circulation Cooling Water System method based on elimination backwater overbottom pressure, comprise connecting pipe for transmitting recirculated water and along circular flow direction successively by heat exchanger that connecting pipe connects, cooling tower and cooling water pump, described connecting pipe comprises cooling tower water side to the inlet pipeline of heat exchanger water inlet end and heat exchanger water side to the water return pipeline of cooling tower water-distributing device water inlet end, it is characterized in that: under naturally unimpeded condition, be in backwater between described heat exchanger water side and cooling tower water-distributing device water inlet end without overbottom pressure running status, described cooling water pump is the low energy consumption cooling water pump adapted with system.
2. a kind of low energy consumption Retrofit of Circulation Cooling Water System method based on eliminating backwater overbottom pressure according to claim 1, naturally unimpeded between described heat exchanger water side and cooling tower water-distributing device water inlet end, for valve on this section of water return pipeline is opened and the device of the unmanned extra increase circulation resistance for arranging naturally.
3. a kind of low energy consumption recirculating cooling water system based on eliminating backwater overbottom pressure according to claim 1
Remodeling method, under naturally unimpeded condition, backwater is in without overbottom pressure running status between described heat exchanger water side and cooling tower water-distributing device water inlet end, its implementation is improve cooling tower setting height(from bottom) until backwater overbottom pressure is eliminated, maybe the heat exchanger producing backwater overbottom pressure is arranged independently cooling system, make it not produce backwater overbottom pressure, maybe the heat exchanger setting height(from bottom) producing backwater overbottom pressure part is reduced, makes it not produce backwater overbottom pressure.
4. a kind of low energy consumption Retrofit of Circulation Cooling Water System method based on eliminating backwater overbottom pressure according to claim 1, the described low energy consumption cooling water pump adapted with system is the water pump that the actual process for cooling demand of lift, flow and system matches.
5. a kind of low energy consumption Retrofit of Circulation Cooling Water System method based on eliminating backwater overbottom pressure according to claim 4, the water pump that the actual process for cooling demand of described lift, flow and system matches, its implementation is the supporting change pole motor of water pump, or servomotor, or permanent magnetism velocity modulation electric engine, or be provided with the common motor of frequency converter; Or control to run quantity with the low energy consumption cooling water pump that system adapts by cooling water temperature, the control device of operating mode is connected; Or adopt the water pump selection of different flow, lift.
6. the low energy consumption recirculating cooling water system based on elimination backwater overbottom pressure, comprise connecting pipe for transmitting recirculated water and along circular flow direction successively by heat exchanger, cooling tower and cooling water pump that connecting pipe connects, described connecting pipe comprises cooling tower water side to the inlet pipeline of heat exchanger water inlet end and heat exchanger water side to the water return pipeline of cooling tower water-distributing device water inlet end, it is characterized in that: the setting height(from bottom) of described cooling tower water-distributing device water inlet end is not less than the setting height(from bottom) of high-order heat exchanger water side, and described cooling water pump is energy-conservation cooling water pump.
7. a kind of low energy consumption recirculating cooling water system based on eliminating backwater overbottom pressure according to claim 6, described energy-conservation cooling water pump is supportingly have the variable parameter operation device that lift, flow and system cools process requirements are matched.
8. a kind of low energy consumption recirculating cooling water system based on eliminating backwater overbottom pressure according to claim 7, described variable parameter operation device is the supporting change pole motor of water pump, or servomotor, or permanent magnetism velocity modulation electric engine, or is provided with the common motor of frequency converter.
9. a kind of low energy consumption recirculating cooling water system based on eliminating backwater overbottom pressure according to claim 6 or 7, described energy-conservation cooling water pump is for be connected with control device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510354220.9A CN104930779A (en) | 2015-06-25 | 2015-06-25 | Low-energy-consumption circulating cooling water system used for removing backwater excess pressure and transformation method |
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| CN201510354220.9A CN104930779A (en) | 2015-06-25 | 2015-06-25 | Low-energy-consumption circulating cooling water system used for removing backwater excess pressure and transformation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222468A (en) * | 2015-10-28 | 2016-01-06 | 福建德兴节能科技有限公司 | A kind of recirculating cooling water system power-economizing method with hydraulic equilibrium mechanism |
| CN106482430A (en) * | 2016-11-04 | 2017-03-08 | 洛阳双瑞达特铜有限公司 | A kind of closed circulating cooling system |
| CN112327613A (en) * | 2020-09-09 | 2021-02-05 | 中石化宁波工程有限公司 | Optimization method of industrial circulating water energy-saving system and industrial circulating water energy-saving system applying same |
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| US20030164231A1 (en) * | 2001-09-28 | 2003-09-04 | The Board Of Trustees Of The Leland Stanford Junior University | Electroosmotic microchannel cooling system |
| CN102252479A (en) * | 2011-05-11 | 2011-11-23 | 杭州福鼎节能科技服务有限公司 | Energy-saving reconstruction method for circulating water conveying and cooling system for industrial and mining enterprises |
| CN202328976U (en) * | 2011-11-25 | 2012-07-11 | 浙江中高动力科技股份有限公司 | Load pool cooling system of diesel engine generator |
| CN202692571U (en) * | 2012-05-29 | 2013-01-23 | 广州南沙龙沙有限公司 | Energy-saving circulating cooling water designing device |
| CN204757500U (en) * | 2015-06-25 | 2015-11-11 | 福建德兴节能科技有限公司 | Low energy consumption recirculating cooling water system based on eliminate return water residual pressure |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030164231A1 (en) * | 2001-09-28 | 2003-09-04 | The Board Of Trustees Of The Leland Stanford Junior University | Electroosmotic microchannel cooling system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222468A (en) * | 2015-10-28 | 2016-01-06 | 福建德兴节能科技有限公司 | A kind of recirculating cooling water system power-economizing method with hydraulic equilibrium mechanism |
| CN106482430A (en) * | 2016-11-04 | 2017-03-08 | 洛阳双瑞达特铜有限公司 | A kind of closed circulating cooling system |
| CN112327613A (en) * | 2020-09-09 | 2021-02-05 | 中石化宁波工程有限公司 | Optimization method of industrial circulating water energy-saving system and industrial circulating water energy-saving system applying same |
| CN112327613B (en) * | 2020-09-09 | 2022-03-22 | 中石化宁波工程有限公司 | Optimization method of industrial circulating water energy-saving system and industrial circulating water energy-saving system applying same |
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Application publication date: 20150923 |