CN202281527U - Enclosed water cooler based on evaporative cooling - Google Patents
Enclosed water cooler based on evaporative cooling Download PDFInfo
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- CN202281527U CN202281527U CN2011204251693U CN201120425169U CN202281527U CN 202281527 U CN202281527 U CN 202281527U CN 2011204251693 U CN2011204251693 U CN 2011204251693U CN 201120425169 U CN201120425169 U CN 201120425169U CN 202281527 U CN202281527 U CN 202281527U
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Abstract
The utility model relates to an enclosed water cooler based on evaporative cooling, particularly an enclosed water cooler used in a thermal power station, and the water cooler is the core component of an enclosed water cooling system based on evaporative cooling. The water cooler comprises a housing, a steam outlet pipe, a filmed water inlet pipe, a filmed water distribution header, a filmed water distribution pipe, a filmed water pressure equalizing header, an enclosed water inlet short pipe, a pipe plate, an U-shaped tube bundle, an enclosed water outlet short pipe, a pipe pate reinforcing plate, an U-shaped pipe bundle branch pipe, a water supplement pipe, a filmed water pump, and a filmed water pump inlet pipe. By adopting the method of water evaporation and heat absorption in high vacuum, the water cooler supplies the enclosed water with enough volume and the temperature below 33 DEG C in various meteorological conditions including high temperature and high humidity to prevent the power output of a turbo generator set from being restricted due to the high temperature of the enclosed water; and the cooling conditions of the main and subsidiary machines are improved; meanwhile, the power consumption and the investment of the enclosed water system are greatly reduced.
Description
(1) technical field:
The utility model relates to the enclosed water cooler that a kind of thermal power station uses based on transpiration-cooled enclosed 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 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.
(3) summary of the invention:
Technical problem to be solved:
The purpose of the utility model provides a kind of based on transpiration-cooled enclosed water cooler, solves too high, the too high problem of energy consumption of the enclosed coolant-temperature gage of prior art enclosed water cooler under hot and humid meteorological condition.
Under hot and humid meteorological condition; 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 comprise under the hot and humid condition in various meteorological conditions based on transpiration-cooled enclosed water cooler, provides capacity, temperature to be lower than 33 ℃ enclosed water, avoids limiting Turbo-generator Set because of the enclosed coolant-temperature gage is high and exerts oneself; Improve main and auxiliary machine cooling condition; Reduce simultaneously closed Water System power consumption and investment significantly.
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 33 ℃ enclosed water, reduces closed Water System power consumption and investment simultaneously significantly.
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 2432.31kJ/kg at vacuum state 0.001MPa (a) to the interval latent heat of vaporization of 0.004MPa (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 28.96 ℃ at vacuum state 0.001MPa (a) to the interval saturation temperature (also claiming boiling temperature) of 0.004MPa (a), quite is lower than 33 ℃; The boiling coefficient of water is much larger than the forced convection exothermic coefficient.
The utility model is joined header (4), membranization water water distributor (5), membranization water based on transpiration-cooled enclosed water cooler by shell (1), steam fairlead (2), membranization water water inlet pipe (3), membranization moisture and is all pressed header (6), enclosed water inlet short tube (7), tube sheet (8), the tube bank of U type (9), enclosed water out short tube (10), tube sheet stiffener (11), U type tube bank arm (12), filling pipe (13), membranization water pump (14), membranization pump water inlet (15) 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 top of shell (1) is provided with major diameter steam fairlead (2); Enclosed water inlet short tube (7), tube sheet (8), tube sheet stiffener (11), U type tube bank (9) enclosed water out short tube (10) constitute the enclosed water flow passage of withstand voltage 1.2MPa; U type tube bank (9) is arranged with the shockproof U type tube bank arm (12) 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).
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.Type tube bank (9) is made up of seamless stainless steel convergent-divergent 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:
● comprise under the hot and humid condition in various meteorological conditions, provide capacity, temperature to be lower than 33 ℃ enclosed water, avoid occurring limiting the phenomenon that Turbo-generator Set is exerted oneself because of enclosed coolant-temperature gage height;
● be applicable to air cooling or indirect air cooling Turbo-generator Set, avoid occurring limiting the phenomenon that Turbo-generator Set is exerted oneself because of enclosed coolant-temperature gage height;
● avoid the unsafe factors such as enclosed water cooler burn into fouling of thermal power station because of using seawater, municipal middle water to bring as open circulation water or the moisturizing of open circulation water;
● 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;
● non-scaling, do not corrode, safeguard, maintenance workload is little.
(4) description of drawings:
Fig. 1 is the structure chart based on transpiration-cooled enclosed water cooler.Reference numeral in Fig. 1:
1 shell, 2 steam fairleads, 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, the tube bank of 9U type,
10 enclosed water out short tubes, 11 tube sheet stiffeners, 12U type tube bank arm,
13 filling pipes, 14 membranization water pumps, 15 membranization pump water inlets.
(5) specific embodiment:
Below be 2000t/h with an enclosed discharge, the enclosed water cooler that 7K (reducing to 30 ℃ for 37 ℃) falls in the enclosed water temperature is an example, further specifies the utility model based on transpiration-cooled enclosed water cooler in conjunction with Fig. 1.
The optimal way of utility model:
The utility model is joined header (4), membranization water water distributor (5), membranization water based on transpiration-cooled enclosed water cooler by shell (1), steam fairlead (2), membranization water water inlet pipe (3), membranization moisture and is pressed all that header (6), enclosed water inlet short tube (7), tube sheet (8), the tube bank of U type (9), enclosed water out short tube (10), tube sheet stiffener (11), U type tube bank arm (12), filling pipe (13), membranization water pump (14), membranization pump water inlet (15) constitute, the vertical section of shell (1) is a rectangle, and the cross section is the high rectangle of top semicircle; The top of shell (1) is provided with major diameter steam fairlead (2); Enclosed water inlet short tube (7), tube sheet (8), tube sheet stiffener (11), U type tube bank (9), enclosed water outlet pipe pipe (10) constitute the enclosed water flow passage of withstand voltage 1.2MPa; U type tube bank (9) is arranged with the shockproof U type tube bank arm (12) 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).
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 25mm stainless steel, stainless steel layer >=2.5mm; Tube sheet stiffener (11) can use the inboard thermal spraying 0.3mm of 35mm carbon steel sheet stainless steel layer to substitute, and tube sheet (8) answers full weld to be connected with tube sheet stiffener (11).
U type tube bank (9) is made up of nominal diameter Φ 19 * 1 316L seamless stainless steel convergent-divergent pipes, is connected with the back weldering mode that expands earlier with tube sheet (8); Nominal gross area 500m
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 (5)
1. one kind based on transpiration-cooled enclosed water cooler, it is characterized in that: join header (4), membranization water water distributor (5), membranization water based on transpiration-cooled enclosed water cooler by shell (1), steam fairlead (2), membranization water water inlet pipe (3), membranization moisture and all press header (6), enclosed water inlet short tube (7), tube sheet (8), the tube bank of U type (9), enclosed water out short tube (10), tube sheet stiffener (11), U type tube bank arm (12), filling pipe (13), membranization water pump (14), membranization pump water inlet (15) 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 top of shell (1) is provided with major diameter steam fairlead (2); Enclosed water inlet short tube (7), tube sheet (8), tube sheet stiffener (11), U type tube bank (9), enclosed water out short tube (10) constitute the enclosed water flow passage of withstand voltage 1.2MPa; U type tube bank (9) is arranged with the shockproof U type tube bank arm (12) 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).
2. according to claim 1 based on transpiration-cooled enclosed water cooler, it is characterized in that described enclosed water inlet short tube (7), enclosed water out short tube (10) are circle-rectangle crossover sub.
3. according to claim 1 based on transpiration-cooled enclosed water cooler, it is characterized in that described U type tube bank (9) is made up of seamless stainless steel convergent-divergent pipe, be connected with the mode of weldering afterwards that expands earlier with tube sheet (8).
4. according to claim 1 based on transpiration-cooled enclosed 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. according to claim 1 based on transpiration-cooled enclosed water cooler, it is characterized in that described every membranization water water distributor (5) bottom has a row water distribution aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204251693U CN202281527U (en) | 2011-11-01 | 2011-11-01 | Enclosed water cooler based on evaporative cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204251693U CN202281527U (en) | 2011-11-01 | 2011-11-01 | Enclosed water cooler based on evaporative cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202281527U true CN202281527U (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204251693U Expired - Fee Related CN202281527U (en) | 2011-11-01 | 2011-11-01 | Enclosed water cooler based on evaporative cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202281527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748963A (en) * | 2012-07-10 | 2012-10-24 | 章礼道 | Closed water cooling system with double-evaporative cooling pressure |
| CN107741167A (en) * | 2017-09-16 | 2018-02-27 | 深圳供电局有限公司 | Corrosion-resistant heat exchanger |
| CN109764735A (en) * | 2018-12-18 | 2019-05-17 | 王爽 | A kind of cold and hot double source generator of vacuum |
-
2011
- 2011-11-01 CN CN2011204251693U patent/CN202281527U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748963A (en) * | 2012-07-10 | 2012-10-24 | 章礼道 | Closed water cooling system with double-evaporative cooling pressure |
| CN102748963B (en) * | 2012-07-10 | 2014-01-15 | 章礼道 | Closed water cooling system with double-evaporative cooling pressure |
| CN107741167A (en) * | 2017-09-16 | 2018-02-27 | 深圳供电局有限公司 | Corrosion-resistant heat exchanger |
| CN109764735A (en) * | 2018-12-18 | 2019-05-17 | 王爽 | A kind of cold and hot double source generator of vacuum |
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Legal Events
| 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: 20120620 Termination date: 20141101 |
|
| EXPY | Termination of patent right or utility model |