CN202582268U - Evaporative closed water cooler capable of preparing condensed water - Google Patents
Evaporative closed water cooler capable of preparing condensed water Download PDFInfo
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- CN202582268U CN202582268U CN 201220100990 CN201220100990U CN202582268U CN 202582268 U CN202582268 U CN 202582268U CN 201220100990 CN201220100990 CN 201220100990 CN 201220100990 U CN201220100990 U CN 201220100990U CN 202582268 U CN202582268 U CN 202582268U
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Abstract
The utility model discloses an evaporative closed water cooler capable of preparing condensed water, and relates to a closed water cooler used for a thermal power station, which is a core part in the evaporative closed water cooler capable of preparing the condensed water. The evaporative closed water cooler comprises a shell, a steam transfer pipe, a membranization water inlet pipe, a membranization water distribution header, a membranization water distribution pipe, a membranization water pressure equalizing header, a closed water inlet short pipe, a tube plate, a cooling pipe bundle, a steering water chamber, a closed water outlet short pipe, a tube plate reinforcing plate, a cooling pipe bundle support plate, an ultra-filtration industrial water replenishing pipe, a membranization water pump, a water inlet pipe of the membranization water pump, a salt balance discharge valve, a low-resistance dehydrator and a liquid level sensor. By adopting a method of absorbing heat through water evaporation under high vacuum, sufficient water at low temperature of 38 DEG C can be provided under all kinds of weather conditions including high temperature, high humidity and high-temperature drought, so that cooling conditions of a host and an auxiliary engine are improved; the power consumption, the water consumption and the investment of the closed water system are reduced; and the condensed water can be prepared by the heat released from the thermal closed water.
Description
(1) technical field:
The vaporation-type enclosed water cooler that the utility model can be produced condensate relates to the enclosed water cooler that a kind of thermal power station uses, and is the core cover that can produce in the vaporation-type enclosed water cooling system of condensate.
(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 comprise the hydrogen-cooled device of steam turbine generator, steam turbine generator inner cold water cooler, the various water pumps of steam turbine side sealing water cooler, the multiple pump motor of steam turbine side water-air cooling but device, bearing cooler, little machine main oil pump bearing cooler, vavuum pump working seal water cooler, steam turbine ram's horn cooler, high pressure main inlet throttle-stop valve cooler, reheat stop interceptor valve cooler, pressure fan motor water-air cooling but device, control oil station cooler, primary air fan motor water-air cooling but device, lubricated and control oil station cooler, id-motor water-air cooling but device, lubricated and control oil station cooler, air preheater bearing oil cooler, hydrogen generator station cooler, chemical sampling frame cooler, 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 the enclosed water cooler.
The normally used enclosed water cooler of prior art thermal power station is a 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, promptly 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 difference is 5K; Reduce the enclosed coolant-temperature gage like expectation with the method that further reduces cold junction end difference, improve the cooling effect of enclosed water, its cost is the plate number that increases investment, increases plate type heat exchanger.
Process with world industryization; The freshwater resources growing tension; Particularly be fit to low calcium, magnesium ion that the enclosed water cooler directly uses, the freshwater resources of low chlorine root, low solid content, low oxygen demand are more rare, and thermal power station's use seawater, municipal middle water are increasing as the case of open circulation water or the use of open circulation water supplementing water; 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 enclosed 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 bigger, bigger to pure water (demineralized water or condensate) demand.
(3) summary of the invention:
Technical problem to be solved:
The purpose of the utility model provides a kind of vaporation-type enclosed water cooler that can produce condensate, solves that the enclosed coolant-temperature gage of prior art enclosed 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 to produce condensate.
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 ℃ possibly 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 gages more for a long time above 33 ℃; 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 gages more for a long time 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 surpasses 33 ℃, reduce the enclosed coolant-temperature gage with the method that reduces cold junction end difference, not only costly but also effect is limited.
The enclosed water cooler of prior art is the heat transfer temperature and pressure of design to guarantee to be necessary between enclosed water side and the open type water side of enclosed water side still to be open type water side take usually low temperature rise, high flow capacity no matter; For improving the heat transfer coefficient of plate type heat exchanger, adopt the design of high reynolds number, high turbulence level usually, its cost is High Pressure Difference, high energy consumption; The equivalent diameter of plate type heat exchanger runner has only about 7mm, stops up for preventing runner, must dispose from removing contamination filter screen in open circulation water side, has increased the energy consumption of open circulation water booster again; Jumbo board-like enclosed water cooler needs import, costs an arm and a leg.
The utility model can be produced the vaporation-type enclosed water cooler of condensate can be under various meteorological conditions comprise hot and humid, high temperature and drought condition; Provide capacity, temperature to be lower than 38 ℃ enclosed water, avoid limiting Turbo-generator Set and exert oneself because of the enclosed coolant-temperature gage is high; Improve main and auxiliary machine cooling condition; Reduce closed Water System power consumption and investment significantly; Simultaneously can also utilize hot enclosed water liberated heat to produce condensate.
Solve the technical scheme that its technical problem adopts:
The utility model is employed in the method for water evaporation heat absorption under the high vacuum, comprises under the hot and humid condition in various meteorological conditions, provides capacity, temperature to be lower than 38 ℃ enclosed water, reduces closed Water System power consumption and investment significantly; Simultaneously can also utilize hot enclosed water liberated heat to produce condensate.
Existing is 2000t/h with an enclosed discharge, and the enclosed water cooler that 7K (reducing 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 like 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 can be produced the vaporation-type enclosed water cooler of condensate 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); Deflector (19); Turn to hydroecium (20) and liquid level sensor to constitute; The vertical section of shell (1) is a 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), turn to hydroecium (20), enclosed water out short tube (10) to constitute the enclosed water flow passage of withstand voltage 1.2MPa; 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 constitute membranization water dispenser cover; Membranization pump water inlet (15) is positioned at the bottom of shell (1), links to each other with the inlet 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).
Get into the no solid content industry water through ultrafiltration from ultrafiltration industry water filling pipe (13), under high vacuum condition, moisture film is in the outer surface evaporation heat absorption of cooling tube bundle (9), and water vapour is drawn by steam fairlead A (2) and/or steam fairlead B (18), produces condensate; 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.
Shell (1) is made up 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 up of the compound carbon steel sheet welding of stainless steel.Cooling tube bundle (9) is made up of the ferrite stainless steel pipe, is connected with the back weldering mode that expands earlier 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 a row water distribution aperture.
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, reduce the closed Water System investment significantly because of the enclosed coolant-temperature gage is high;
Avoid thermal power station because of using seawater, municipal middle water, avoid the use of expensive titanium plate plate type heat exchanger as the unsafe factors such as enclosed water cooler burn into fouling that open circulation water or the moisturizing of open circulation water bring;
Break away from big capacity plate type heat exchanger import and rely on, reduce the investment of enclosed water heat exchanger;
No open circulation water booster power consumption, enclosed water-circulating pump power consumption significantly reduces;
No open circulation evaporation of water water consumption, hot enclosed water liberated heat capable of using is on the contrary produced condensate;
The double tubesheet structure is easy to maximize, and cooperates the large turbo-type generator group to use.
(4) description of drawings:
Fig. 1 is the structure chart that can produce the vaporation-type enclosed water cooler of condensate.
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,
19 deflectors 20 turn to hydroecium
(5) specific embodiment:
Below be 2000t/h with an enclosed discharge, the enclosed water cooler that 7K (reducing to 38 ℃ for 45 ℃) falls in the enclosed water temperature is an example, further specifies the vaporation-type enclosed water cooler that the utility model can be produced condensate in conjunction with Fig. 1.
The optimal way of utility model:
The utility model can be produced the vaporation-type enclosed water cooler of condensate 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); Deflector (19); Turn to hydroecium (20) and liquid level sensor to constitute; The vertical section of shell (1) is a 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), turn to hydroecium (20), enclosed water out short tube (10) to constitute the enclosed water flow passage of withstand voltage 1.2MPa; 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 constitute membranization water dispenser cover; Membranization pump water inlet (15) is positioned at the bottom of shell (1), links to each other with the inlet 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).
Get into the no solid content industry water through ultrafiltration from ultrafiltration industry water filling pipe (13), under high vacuum condition, moisture film is in the outer surface evaporation heat absorption of cooling tube bundle (9), and water vapour is drawn by steam fairlead A (2) and/or steam fairlead B (18), produces condensate; 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 a metal seal ball valve.
Low-resistance dehydrater (17) is a stainless steel venetian blind type dehydrater.Can remove the saliferous water droplet that water vapour carries, to improve the quality of condensate.
Shell (1) is made up of the compound carbon steel sheet welding of 8mm stainless steel, also can use the inboard thermal spraying 0.3mm of 8mm carbon steel sheet stainless steel layer to substitute; 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 use the inboard thermal spraying 0.3mm of 30mm carbon steel sheet stainless steel layer to substitute, and tube sheet (8) answers full weld to be connected with tube sheet stiffener (11).
Cooling tube bundle (9) is made up of nominal diameter Φ 19 * 1 ferrite stainless steel pipes, is connected with the back weldering mode that expands earlier with tube sheet (8); Nominal gross area 1000m
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 a row Φ 2 water distribution apertures.
Claims (7)
1. the vaporation-type enclosed water cooler that can produce condensate is characterized in that: join header (4), membranization water water distributor (5), membranization water by shell (1), steam fairlead A (2), membranization water water inlet pipe (3), membranization moisture and all press support plate (12), 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), deflector (19) in the middle of 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), the cooling tube bundle, turn to hydroecium (20) and liquid level sensor formation; The vertical section of shell (1) is a 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), turn to hydroecium (20), enclosed water out short tube (10) to constitute the enclosed water flow passage of withstand voltage 1.2MPa; 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 constitute membranization water dispenser cover; Membranization pump water inlet (15) is positioned at the bottom of shell (1), links to each other with the inlet 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. the vaporation-type enclosed water cooler that can produce condensate according to claim 1 is characterized in that described enclosed water inlet short tube (7), enclosed water out short tube (10) are circle-rectangle crossover sub.
3. the vaporation-type enclosed water cooler that can produce condensate according to claim 1 is characterized in that described cooling tube bundle (9) is made up of the ferrite stainless steel pipe, is connected with the back weldering mode that expands earlier with tube sheet (8).
4. the vaporation-type enclosed water cooler that can produce condensate according to claim 1 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. the vaporation-type enclosed water cooler that can produce condensate according to claim 1 is characterized in that described every membranization water water distributor (5) bottom has a row water distribution aperture.
6. the vaporation-type enclosed water cooler that can produce condensate according to claim 1 is characterized in that described low-resistance dehydrater (17) is a stainless steel venetian blind type dehydrater.
7. the vaporation-type enclosed water cooler that can produce condensate according to claim 1 is characterized in that described salt balance drain valve (16) is a metal seal ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220100990 CN202582268U (en) | 2012-03-19 | 2012-03-19 | Evaporative closed water cooler capable of preparing condensed water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220100990 CN202582268U (en) | 2012-03-19 | 2012-03-19 | Evaporative closed water cooler capable of preparing condensed water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202582268U true CN202582268U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220100990 Expired - Fee Related CN202582268U (en) | 2012-03-19 | 2012-03-19 | Evaporative closed water cooler capable of preparing condensed water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202582268U (en) |
Cited By (2)
| 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 |
| CN106382833A (en) * | 2016-09-13 | 2017-02-08 | 远大空调有限公司 | Water chilling unit evaporator with direct cooling and heat exchange function |
-
2012
- 2012-03-19 CN CN 201220100990 patent/CN202582268U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN106382833A (en) * | 2016-09-13 | 2017-02-08 | 远大空调有限公司 | Water chilling unit evaporator with direct cooling and heat exchange function |
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|---|---|---|---|
| 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: 20121205 Termination date: 20150319 |
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| EXPY | Termination of patent right or utility model |