CN202692760U - Straight-flow closed type water cooler based on evaporative cooling - Google Patents
Straight-flow closed type water cooler based on evaporative cooling Download PDFInfo
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- CN202692760U CN202692760U CN 201220309704 CN201220309704U CN202692760U CN 202692760 U CN202692760 U CN 202692760U CN 201220309704 CN201220309704 CN 201220309704 CN 201220309704 U CN201220309704 U CN 201220309704U CN 202692760 U CN202692760 U CN 202692760U
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Abstract
The utility model discloses a straight-flow closed type water cooler based on evaporative cooling, relates to a closed type water cooler used for a thermal power station, and relates to a core part sleeve of a closed type water cooling system based on the evaporative cooling. The straight-flow closed type water cooler provided by the utility model is composed of a shell, a steam outlet pipe, a membranization water inlet pipe, a membranization water distribution collecting box, a membranization water distribution pipe, a membranization water voltage-sharing collecting box, a closed type water inlet short pipe, a pipe plate, a cooling pipe bundle, a turning water chamber, a closed type water outlet short pipe, a tube plate stiffening plate, a cooling pipe bundle branch plate, a hyperfiltration service water replenishing pipe, a membranization water pump, a water inlet pipe of the membranization water pump, a salt balance discharge valve, a low resistivity water eliminator and a liquid level sensor, wherein a cooling pipe is internally provided with a screw type burbling strip, and a water evaporation heat absorbing method under high vacuum is adopted; the straight-flow closed type water cooler provides enough closed type water at the temperature of lower than 38 DEG C under high temperature, high humidity and high temperature and dry conditions, and the cooling conditions of main and auxiliary machines are improved; and the power consumption, water consumption and investment of a closed type water system are reduced, and heat discharged by hot seal type water is also utilized to prepare condensed water.
Description
(1) technical field:
The utility model single flow relates to the closed water cooler that a kind of thermal power station uses based on transpiration-cooled closed water cooler, is based on the core cover in the transpiration-cooled enclosed water cooling system.
(2) background technology:
The enclosed water that the thermal power station of prior art uses is the demineralized water of closed cycle, enclosed water as cooling medium, its user comprises the hydrogen-cooled device of steam turbine generator, steam turbine generator inner cold water cooler, the sealing water cooler of the various water pumps of steam turbine side, the water-air cooling of the multiple pump motor of steam turbine side is device but, the bearing cooler, little owner's oil pump bearing cooler, vavuum pump working seal water cooler, steam turbine ram's horn cooler, high pressure main inlet throttle-stop valve cooler, the reheat stop interceptor valve cooler, pressure fan motor water-air cooling is device but, control petrol station cooler, primary air fan motor water-air cooling is device but, the lubricated control petrol station cooler that reaches, the id-motor water-air cooling is device but, the lubricated control petrol station cooler that reaches, the air preheater bearing oil cooler, cooler in hydrogen generation station, chemical sampling frame cooler, the coal pulverizer bearing oil cooler, start boiler water circulating pump with cooler etc., enclosed water is the essential condition that guarantees thermal power station's main and auxiliaries safe operation.The heat that enclosed water absorbs is taken away by open circulation water in closed water cooler.
The normally used closed water cooler of prior art thermal power station is plate type heat exchanger, also has the minority power station to use shell-and-tube heat exchanger.Plate type heat exchanger and shell-and-tube heat exchanger are the water water heat exchanger, namely in heat exchange plate both sides, heat exchanger tube the outside, working medium is the forced convection heat release to the heat transfer type of wall.
Plate type heat exchanger is a kind of high-performance heat exchanger of compact conformation, with countercurrent heat exchange method work, usually its cold junction end is poor is 5K, poor method reduces the enclosed coolant-temperature gage further to reduce the cold junction end such as expectation, improve the cooling effect of enclosed water, its cost is the plate number that increases investment, increases plate type heat exchanger.
Process with world industry, the freshwater resources growing tension, particularly be fit to low calcium, the magnesium ion that closed water cooler directly uses, the freshwater resources of low chlorine root, low solid content, low oxygen demand are more rare, the case that thermal power station uses seawater, municipal middle water to use as open circulation water or open circulation water supplementing water is increasing, the material of the plate of plate type heat exchanger and the heat-transfer pipe of shell-and-tube heat exchanger is used better and better, but the average fault-free hourage of closed water cooler does not rise counter falling.
Overcritical heat supply unit is used widely in China, and is because the prior art supercritical DC furnace starts and heat supply network heat supply working medium consumption is larger, larger to pure water (demineralized water or condensate water) demand.
(3) summary of the invention:
Technical problem to be solved:
The purpose of this utility model provides a kind of single flow based on transpiration-cooled closed water cooler, solves that the enclosed coolant-temperature gage of prior art closed water cooler under hot and humid, high temperature and drought meteorological condition is too high, energy consumption is too high, water consumes too high problem; Simultaneously can also utilize hot enclosed water liberated heat producing condensed.
Under the meteorological condition of hot and humid or high temperature and drought, when the open circulation coolant-temperature gage surpasses 33 ℃, the enclosed coolant-temperature gage will be above 38 ℃, because the enclosed coolant-temperature gage is the essential condition that guarantees thermal power station's main and auxiliaries safe operation, the enclosed coolant-temperature gage surpasses 38 ℃ may cause that the Turbo-generator Set limit exerts oneself.The thermal power station of south China had within 1 year count the open circulation coolant-temperature gage above 33 ℃ when more; Thermal power station's open circulation coolant-temperature gage to Southeast Asia can become normality above 33 ℃; To the fired power generating unit of the water-deficient area of adopting indirect air cooling, also have within 1 year and count the enclosed coolant-temperature gage when more and surpass 38 ℃, the Turbo-generator Set of prior art can only be dealt with forced partial outage.
When the open circulation coolant-temperature gage surpassed 33 ℃, poor method reduced the enclosed coolant-temperature gage with reducing the cold junction end, and is not only costly but also effect is limited.
The closed water cooler of prior art no matter enclosed water side or opened water side is taked the heat transfer temperature and pressure of design to guarantee to be necessary between enclosed water side and the opened water side of low-temperature-rise, high flow capacity usually; For improving the heat transfer coefficient of plate type heat exchanger, usually adopt the design of high reynolds number, high turbulence level, its cost is High Pressure Difference, high energy consumption; The equivalent diameter of plate type heat exchanger runner only has about 7mm, stops up for preventing runner, must dispose from removing contamination filter screen in open circulation water side, has increased again the energy consumption of open circulation water booster; Jumbo board-like closed water cooler needs import, and is expensive.
The utility model single flow can be under various meteorological conditions comprise hot and humid, high temperature and drought condition based on transpiration-cooled closed water cooler, provide capacity, temperature to be lower than 38 ℃ enclosed water, avoid limiting Turbo-generator Set because the enclosed coolant-temperature gage is high and exert oneself; Improve main and auxiliary machine cooling condition; Decrease closed Water System power consumption and investment; Simultaneously can also utilize hot enclosed water liberated heat producing condensed.
Solve the technical scheme that its technical problem adopts:
The utility model adopts the method for water evaporation endothermic under high vacuum, comprises under the hot and humid condition in various meteorological conditions, provides capacity, temperature to be lower than 38 ℃ enclosed water, decrease closed Water System power consumption and investment; Simultaneously can also utilize hot enclosed water liberated heat producing condensed.
Now take an enclosed discharge as 2000t/h, the closed water cooler that 7K (being down to 38 ℃ for 45 ℃) falls in the enclosed water temperature is the example explanation: enclosed water enthalpy drop 29.25kJ/kg, 2000t/h absorbs heat 58.5 * 10 altogether
6KJ/h, rising such as the open circulation water temperature also is 7K (33 ℃ rise to 40 ℃), open circulation water needs 2000t/h at least.
Water is that 2484.38kJ/kg is to 2323kJ/kg at vacuum state 0.001MPa (a) to the interval latent heat of vaporization of 0.005MPa (a), as long as the water of evaporation 23.8t/h under this vacuum state interval, its caloric receptivity and temperature rise 7K, the open circulation water of flow 2000t/h are together.Water is 6.97 ℃ to 32.88 ℃ at vacuum state 0.001MPa (a) to the interval saturation temperature (also claiming boiling temperature) of 0.005MPa (a), quite is lower than 38 ℃; The boiling coefficient of water is much larger than the forced convection exothermic coefficient.
The utility model single flow based on transpiration-cooled closed water cooler by shell (1), steam fairlead A (2), membranization water water inlet pipe (3), membranization moisture is joined header (4), membranization water water distributor (5), membranization water is all pressed header (6), enclosed water inlet short tube (7), tube sheet (8), cooling tube bundle (9), enclosed water out short tube (10), tube sheet stiffener (11), support plate (12) in the middle of the cooling tube bundle, ultrafiltration industry water filling pipe (13), membranization water pump (14), membranization pump water inlet (15), salt balance drain valve (16), low-resistance dehydrater (17), steam fairlead B (18) and liquid level sensor consist of; The vertical section of shell (1) is rectangle, and the cross section is the high rectangle of top semicircle; The upper lateral part of shell (1) is provided with rectangle steam fairlead A (2) and steam fairlead B (18); Enclosed water inlet short tube (7), tube sheet (8), tube sheet stiffener (11), cooling tube bundle (9), enclosed water out short tube (10) consist of the enclosed water flow passage of withstand voltage 1.2MPa; Be provided with spiral trouble flow strip in each cooling tube of cooling tube bundle (9); Cooling tube bundle (9) middle part is provided with the middle support plate (12) of the shockproof cooling tube bundle of unloading; Membranization water water inlet pipe (3), membranization moisture are joined header (4), membranization water water distributor (5), membranization water and are all pressed header (6) to consist of membranization water dispenser cover; Membranization pump water inlet (15) is positioned at the bottom of shell (1), links to each other with the entrance of membranization water pump (14), and the outlet of membranization water pump (14) links to each other with membranization water water inlet pipe (3); Low-resistance dehydrater (17) is arranged in membranization water dispenser cover top; Salt balance drain valve (16) links to each other with the outlet of membranization water pump (14).
From ultrafiltration industry water filling pipe (13) enter through ultrafiltration without the solid content industry water, under high vacuum condition, moisture film is at the outer surface evaporation endothermic of cooling tube bundle (9), and water vapour is drawn producing condensed by steam fairlead A (2) and/or steam fairlead B (18); Membranization water through membranization water pump (14) circulation is concentrated, and opens salt balance drain valve (16) in good time and can keep suitable concentration rate.
Low-resistance dehydrater (17) can be removed the saliferous water droplet that water vapour carries, to improve the quality of condensate water.
Shell (1) is made of the compound carbon steel sheet welding of stainless steel.Enclosed water inlet short tube (7), enclosed water out short tube (10) are circle-rectangle crossover sub.Tube sheet (8) and tube sheet stiffener (11) are made of the compound carbon steel sheet welding of stainless steel.Cooling tube bundle (9) is comprised of ferrite stainless steel pipe, is connected in weldering mode after expanding first with tube sheet (8).Membranization water water inlet pipe (3), membranization moisture are joined header (4), membranization water water distributor (5), membranization water and are all pressed header (6), membranization water pump (14), membranization pump water inlet (15) to be stainless steel.Every membranization water water distributor (5) bottom has 3 row water distribution apertures.
The beneficial effect of utility model:
● under various meteorological conditions comprise hot and humid, high temperature and drought condition, provide capacity, temperature to be lower than 38 ℃ enclosed water, avoid occurring the phenomenon of exerting oneself because of the high restriction of enclosed coolant-temperature gage Turbo-generator Set;
● be applicable to Direct Air-Cooled or indirect air cooling high back pressure Turbo-generator Set, avoid occurring limiting the phenomenon that Turbo-generator Set is exerted oneself because the enclosed coolant-temperature gage is high, the decrease closed Water System is invested;
● avoid thermal power station because using seawater, municipal middle water as the unsafe factors such as closed water cooler corrosion and scaling that open circulation water or the moisturizing of open circulation water bring, avoid using expensive titanium plate plate type heat exchanger or two phase stainless steel plate type heat exchanger;
● break away from large capacity plate type heat exchanger import and rely on, reduce the investment of enclosed water heat exchanger;
● without open circulation water booster power consumption, enclosed water-circulating pump power consumption significantly reduces;
● without open circulation evaporation of water water consumption, can utilize on the contrary hot enclosed water liberated heat producing condensed;
● the single flow structure is convenient to arrange spiral trouble flow strip in cooling tube, improve enclosed water to the exothermic coefficient of cooling tube inwall;
● double tubesheet single flow structure, be easy to maximize, cooperate the large turbo-type generator group to use.
(4) description of drawings:
Fig. 1 is that single flow is based on the structure chart of transpiration-cooled closed water cooler.
Reference numeral in Fig. 1:
1 shell, 2 steam fairlead A, 3 membranization water water inlet pipes,
4 membranization moisture join header, 5 membranization water water distributors, 6 membranization water all press header,
7 enclosed water inlet short tubes, 8 tube sheets, 9 cooling tube bundles,
Support plate in the middle of the 10 enclosed water out short tubes, 11 tube sheet stiffeners, 12 cooling tube bundles,
13 ultrafiltration industry water filling pipes, 14 membranization water pumps, 15 membranization pump water inlets,
16 salt balance drain valves, 17 low-resistance dehydraters, 18 steam fairlead B.
(5) specific embodiment:
Below take an enclosed discharge as 2000t/h, the closed water cooler that 7K (being down to 38 ℃ for 45 ℃) falls in the enclosed water temperature is example, further specifies the utility model single flow based on transpiration-cooled closed water cooler in conjunction with Fig. 1.
The optimal way of utility model:
The utility model single flow based on transpiration-cooled closed water cooler by by shell (1), steam fairlead A (2), membranization water water inlet pipe (3), membranization moisture is joined header (4), membranization water water distributor (5), membranization water is all pressed header (6), enclosed water inlet short tube (7), tube sheet (8), cooling tube bundle (9), enclosed water out short tube (10), tube sheet stiffener (11), support plate (12) in the middle of the cooling tube bundle, ultrafiltration industry water filling pipe (13), membranization water pump (14), membranization pump water inlet (15), salt balance drain valve (16), low-resistance dehydrater (17), steam fairlead B (18) and liquid level sensor consist of; The vertical section of shell (1) is rectangle, and the cross section is the high rectangle of top semicircle; The upper lateral part of shell (1) is provided with rectangle steam fairlead A (2) and steam fairlead B (18); Enclosed water inlet short tube (7), tube sheet (8), tube sheet stiffener (11), cooling tube bundle (9), enclosed water out short tube (10) consist of the enclosed water flow passage of withstand voltage 1.2MPa; Be provided with spiral trouble flow strip in each cooling tube of cooling tube bundle (9); Cooling tube bundle (9) middle part is provided with the middle support plate (12) of the shockproof cooling tube bundle of unloading; Membranization water water inlet pipe (3), membranization moisture are joined header (4), membranization water water distributor (5), membranization water and are all pressed header (6) to consist of membranization water dispenser cover; Membranization pump water inlet (15) is positioned at the bottom of shell (1), links to each other with the entrance of membranization water pump (14), and the outlet of membranization water pump (14) links to each other with membranization water water inlet pipe (3); Low-resistance dehydrater (17) is arranged in membranization water dispenser cover top; Salt balance drain valve (16) links to each other with the outlet of membranization water pump (14).
From ultrafiltration industry water filling pipe (13) enter through ultrafiltration without the solid content industry water, under high vacuum condition, moisture film is at the outer surface evaporation endothermic of cooling tube bundle (9), and water vapour is drawn producing condensed by steam fairlead A (2) and/or steam fairlead B (18); Membranization water through membranization water pump (14) circulation is concentrated, and opens salt balance drain valve (16) in good time and can keep suitable concentration rate.Salt balance drain valve (16) is metal seal ball valve.
Low-resistance dehydrater (17) is stainless steel venetian blind type dehydrater.Can remove the saliferous water droplet that water vapour carries, to improve the quality of condensate water.
Shell (1) is made of the compound carbon steel sheet welding of 8mm stainless steel, also can substitute with the inboard thermal spraying 0.3mm of 8mm carbon steel sheet stainless steel layer; Shell (1) outside is welded with reinforcement, and the heat insulation layer all standing is arranged.
Enclosed water inlet short tube (7), enclosed water out short tube (10) are circle-rectangle crossover sub, 6mm carbon steel metal sheet, and inner surface is through the phosphatization Passivation Treatment.
Tube sheet (8) is by the compound carbon steel sheet manufacturing of 20mm stainless steel, stainless steel layer 〉=2mm; Tube sheet stiffener (11) can substitute with the inboard thermal spraying 0.3mm of 30mm carbon steel sheet stainless steel layer, and tube sheet (8) answers full weld to be connected with tube sheet stiffener (11).
Cooling tube bundle (9) is comprised of nominal diameter Φ 19 * 1 ferrite stainless steel pipes, is connected in weldering mode after expanding first with tube sheet (8); Be provided with the spiral trouble flow strip of being turned round system by 1 * 16mm ferritic stainless steel band steel in the cooling tube; Cooling tube bundle (9) nominal gross area 880m
2
Membranization water water inlet pipe (3), membranization moisture are joined header (4), membranization water water distributor (5), membranization water and are all pressed header (6), membranization water pump (14), membranization pump water inlet (15) to be stainless steel.
Every membranization water water distributor (5) bottom has 3 row Φ, 1 water distribution aperture.
Claims (8)
1. a single flow is characterized in that based on transpiration-cooled closed water cooler: by shell (1), steam fairlead A (2), membranization water water inlet pipe (3), membranization moisture is joined header (4), membranization water water distributor (5), membranization water is all pressed header (6), enclosed water inlet short tube (7), tube sheet (8), cooling tube bundle (9), enclosed water out short tube (10), tube sheet stiffener (11), support plate (12) in the middle of the cooling tube bundle, ultrafiltration industry water filling pipe (13), membranization water pump (14), membranization pump water inlet (15), salt balance drain valve (16), low-resistance dehydrater (17), steam fairlead B (18) and liquid level sensor consist of; The vertical section of shell (1) is rectangle, and the cross section is the high rectangle of top semicircle; The upper lateral part of shell (1) is provided with rectangle steam fairlead A (2) and steam fairlead B (18); Enclosed water inlet short tube (7), tube sheet (8), tube sheet stiffener (11), cooling tube bundle (9), enclosed water out short tube (10) consist of the enclosed water flow passage of withstand voltage 1.2MPa; Be provided with spiral trouble flow strip in each cooling tube of cooling tube bundle (9); Cooling tube bundle (9) middle part is provided with the middle support plate (12) of the shockproof cooling tube bundle of unloading; Membranization water water inlet pipe (3), membranization moisture are joined header (4), membranization water water distributor (5), membranization water and are all pressed header (6) to consist of membranization water dispenser cover; Membranization pump water inlet (15) is positioned at the bottom of shell (1), links to each other with the entrance of membranization water pump (14), and the outlet of membranization water pump (14) links to each other with membranization water water inlet pipe (3); Low-resistance dehydrater (17) is arranged in membranization water dispenser cover top; Salt balance drain valve (16) links to each other with the outlet of membranization water pump (14).
2. single flow according to claim 1 is characterized in that based on transpiration-cooled closed water cooler described enclosed water inlet short tube (7), enclosed water out short tube (10) are circle-rectangle crossover sub.
3. single flow according to claim 1 is characterized in that based on transpiration-cooled closed water cooler described cooling tube bundle (9) is comprised of nominal diameter Φ 19 * 1 ferrite stainless steel pipes, is connected in weldering mode after expanding first with tube sheet (8); Be provided with the spiral trouble flow strip of being turned round system by 1 * 16mm ferritic stainless steel band steel in the cooling tube.
4. single flow according to claim 1 is based on transpiration-cooled closed water cooler, it is characterized in that described membranization water water inlet pipe (3), membranization moisture joins header (4), membranization water water distributor (5), membranization water and all press header (6), membranization water pump (14), membranization pump water inlet (15) to be stainless steel.
5. single flow according to claim 1 is characterized in that based on transpiration-cooled closed water cooler described every membranization water water distributor (5) bottom has 3 row water distribution apertures.
6. single flow according to claim 1 is characterized in that based on transpiration-cooled closed water cooler described low-resistance dehydrater (17) is stainless steel venetian blind type dehydrater.
7. single flow according to claim 1 is characterized in that based on transpiration-cooled closed water cooler described salt balance drain valve (16) is metal seal ball valve.
8. single flow according to claim 1 is characterized in that based on transpiration-cooled closed water cooler described shell (1) is made of the compound carbon steel sheet welding of 8mm stainless steel, also can substitute with the inboard thermal spraying 0.3mm of 8mm carbon steel sheet stainless steel layer; Shell (1) outside is welded with reinforcement, and the heat insulation layer all standing is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309704 CN202692760U (en) | 2012-06-29 | 2012-06-29 | Straight-flow closed type water cooler based on evaporative cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309704 CN202692760U (en) | 2012-06-29 | 2012-06-29 | Straight-flow closed type water cooler based on evaporative cooling |
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| Publication Number | Publication Date |
|---|---|
| CN202692760U true CN202692760U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220309704 Expired - Fee Related CN202692760U (en) | 2012-06-29 | 2012-06-29 | Straight-flow closed type water cooler based on evaporative cooling |
Country Status (1)
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| CN (1) | CN202692760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899369A (en) * | 2014-04-08 | 2014-07-02 | 章礼道 | Closed water cooling system with twin-jet nozzle for evaporative cooling |
-
2012
- 2012-06-29 CN CN 201220309704 patent/CN202692760U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899369A (en) * | 2014-04-08 | 2014-07-02 | 章礼道 | Closed water cooling system with twin-jet nozzle for evaporative cooling |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20150629 |
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| EXPY | Termination of patent right or utility model |