CN200940826Y - Horizontal heater for realizing low dispelling cold section end difference - Google Patents
Horizontal heater for realizing low dispelling cold section end difference Download PDFInfo
- Publication number
- CN200940826Y CN200940826Y CN 200620034319 CN200620034319U CN200940826Y CN 200940826 Y CN200940826 Y CN 200940826Y CN 200620034319 CN200620034319 CN 200620034319 CN 200620034319 U CN200620034319 U CN 200620034319U CN 200940826 Y CN200940826 Y CN 200940826Y
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- China
- Prior art keywords
- drain
- hydrophobic
- shell
- cooling section
- shaped heat
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- Expired - Fee Related
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Abstract
The utility model discloses a horizontal heater which can realize a lower terminal temperature difference at drain cooling section which comprises a shell, a water chamber, a U shaped heat exchange pipe located in the shell and connecting the water chamber, a drain cooling sections located in the shell and separate from passage in the U shaped heat exchange pipe and flow deflection plates. At the utility model, the drain cooling section is equipped with a drain inlet and a drain outlet wherein a protruded groove, which places the drain inlet, is equipped at the lower section of shell which corresponds to the drain inlet. The utility model utilizes increasing the position elevation between the drain inlet and the drain level to form a high water seal, which can effectively prevent steam from entering the drain cooling section, realize a lower terminal temperature difference at drain cooling section, improve the efficiency, save the fuel, extend the service life of U shaped heat exchange pipe, promote drain output and help a drain regulation valve to control the drain level.
Description
Technical field
The utility model relates to a kind of and the matching used horizontal heater of the steam turbine thermal power plant.
Background technology
Height between the steam turbine locomotive of thermal power plant, low-pressure heater is the device that utilizes the heating boiler feedwater of drawing gas of steam turbine, at present, the structure of widely used horizontal heater as shown in Figure 1, comprise the shell 1 that has air intake, hydroecium 2, place in the shell 1 and many U-shaped heat exchanger tubes 3 that communicate with hydroecium 2, the hydrophobic cooling section 4 (dredging cold section) that places in the shell 1 and isolate mutually with the pipe internal channel of U-shaped heat exchanger tube 3 etc., hydroecium 2 is provided with feed-water inlet 5 and outlet 6, hydrophobic cooling section 4 is provided with hydrophobic import 7 and outlet 8, also is respectively equipped with several piece deflection plate 9 in shell 1 and hydrophobic cooling section 4;
Feedwater enters hydroecium 2 from import 5, flows out from the outlet 6 of hydroecium 2 at last by U-shaped heat exchanger tube 3; Enter shell in (pipe outside) as heating steam from the air intake of shell 1 from drawing gas of steam turbine, the heat of steam conducts heat and heated feed water through tube wall, steam itself is condensed into hydrophobic, enter in the hydrophobic cooling section 7 from the import 7 of hydrophobic cooling section 4, this is hydrophobic outside pipe, hydrophobic upwards mobile under the effect of steam pressure, because of deflection plate 9 stop turn mobile, finally flow out from hydrophobic outlet 8, in this process, hydrophobic and feedwater heat exchange is carried out, improved feed temperature, and hydrophobic itself being cooled, reduced temperature, because feed temperature improves, that is improved thermal efficiency of cycle, saved fuel, the hydrophobic outlet temperature of wherein leaving the heater shell-side is called " it is poor to dredge cold section end " with the difference that enters the feed-water inlet temperature of U-shaped heat exchanger tube side, it is the important indicator that the evaluation horizontal heater reclaims the thermal efficiency, at 300,000 kilowatts present and the horizontal heater of above unit, this dredges cold section end difference design load and often is taken as about 5.6 ℃ (or 6 ℃), actual motion does not often all reach this design load, for example 11 ℃, even 20 ℃, exceed this 5.6 ℃ of design loads far away, this is because in use, as shown in Figure 2, though hydrophobic import 7 is immersed in hydrophobic 10, the position absolute altitude between hydrophobic import 7 and the hydrophobic water level is comparatively approaching, because the fluctuation of water level, can be entrained into a part of steam hydrophobic when entering hydrophobic import 7, hydrophobic heat content is increased, and feedwater is constant to its cooling capacity, this has just improved hydrophobic temperature when leaving the heater shell-side, also just improve " it is poor to dredge cold section end " value, reduced thermal efficiency of cycle; Simultaneously, dredge cold section, cause the moving impact of steam water two phase flow, shortened the service life of U-shaped heat exchanger tube U-shaped heat exchanger tube 3 in dredging cold section because steam enters; Moreover because the rising of drain temperature, the more gas of generation hydrophobic cooling section 4 in is unfavorable for that hydrophobic output and drain regulating valve regulate hydrophobic water level.
The utility model content
The purpose of this utility model is at the above-mentioned deficiency of prior art, provide a kind of and can prevent effectively that steam from entering the horizontal heater of hydrophobic cooling section, it can realize that low thin cold section end is poor, raise the efficiency, fuel savings, prolong the U-shaped heat exchanger tube service life, help hydrophobic output and drain regulating valve is regulated hydrophobic water level.
For achieving the above object, of the present utility modelly realize that low to dredge cold section end poor, raise the efficiency, fuel-saving horizontal heater, comprise the shell that has air intake, hydroecium, place in the shell and the U-shaped heat exchanger tube more than two or two that communicates with hydroecium, the hydrophobic cooling section (dredging cold section) that places in the shell and isolate mutually with the pipe internal channel of U-shaped heat exchanger tube etc., hydroecium does not have feed-water inlet and outlet, hydrophobic cooling section is provided with hydrophobic import and outlet, in shell and hydrophobic cooling section, also be respectively equipped with the several piece deflection plate, it is characterized in that being provided with outwards outstanding groove at the corresponding outer casing underpart of hydrophobic import with hydrophobic cooling section, the hydrophobic import of hydrophobic cooling section places this groove;
By this kind structure, can strengthen position absolute altitude, one section higher water seal of formation between hydrophobic import and the hydrophobic water level, can prevent effectively that steam from entering hydrophobic cooling section, can realize low dredge cold section end poor, raise the efficiency, the service life of fuel savings, prolongation U-shaped heat exchanger tube, help hydrophobic output and drain regulating valve is regulated hydrophobic water level.
As further improvement of the utility model, described pit comprises upper and lower two sections, and they connect by flange, so that when maintenance dismounting cleans out the impurity in the groove.
Description of drawings
Fig. 1 is the structural representation of existing horizontal heater.
Fig. 2 is the partial enlarged drawing of Figure 11 place user mode.
Fig. 3 is the structural representation of the utility model embodiment.
Fig. 4 is the partial enlarged drawing of Fig. 3 II place user mode.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
By shown in Figure 3, the horizontal heater of realizing low thin cold section end difference of the utility model embodiment, comprise the shell 1 that has air intake, hydroecium 2, place in the shell 1 and many U-shaped heat exchanger tubes 3 that communicate with hydroecium 2, the hydrophobic cooling section (dredging cold section) 4 that places in the shell 1 and isolate mutually with the pipe internal channel of U-shaped heat exchanger tube 3 etc., hydroecium 2 is provided with feed-water inlet 5 and outlet 6, hydrophobic cooling section 4 is provided with hydrophobic import 7 and outlet 8, in shell 1 and hydrophobic cooling section 4, also be respectively equipped with several piece deflection plate 9, be provided with outwards outstanding groove 11 in hydrophobic import 7 corresponding shells 1 bottom with hydrophobic cooling section 4, pit 1 comprises, following two sections, they connect by flange, and the hydrophobic import 7 of hydrophobic cooling section 4 places this groove 11.
By shown in Figure 4, by hydrophobic import 7 is placed groove 11, significantly strengthened the position absolute altitude between hydrophobic import 7 and hydrophobic 10 water levels, can prevent effectively that steam from entering hydrophobic cooling section 4, can realize that low thin cold section end is poor, raise the efficiency, fuel savings, prolong the U-shaped heat exchanger tube service life, help hydrophobic output and drain regulating valve is regulated hydrophobic water level.
Claims (2)
1. can realize the low horizontal heater of dredging cold section end difference for one kind, comprise the shell that has air intake, hydroecium, place in the shell and the several U-shaped heat exchanger tubes that communicate with hydroecium, the hydrophobic cooling section that places in the shell and isolate mutually with the pipe internal channel of several U-shaped heat exchanger tubes etc., hydroecium is provided with feed-water inlet and outlet, hydrophobic cooling section is provided with hydrophobic import and outlet, in shell and hydrophobic cooling section, also be respectively equipped with the several piece deflection plate, it is characterized in that being provided with outwards outstanding groove at the corresponding outer casing underpart of hydrophobic import with hydrophobic cooling section, the hydrophobic import of hydrophobic cooling section places this groove.
2. the horizontal heater of realizing low thin cold section end difference according to claim 1 is characterized in that described groove comprises upper and lower two sections, and they connect by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034319 CN200940826Y (en) | 2006-05-26 | 2006-05-26 | Horizontal heater for realizing low dispelling cold section end difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034319 CN200940826Y (en) | 2006-05-26 | 2006-05-26 | Horizontal heater for realizing low dispelling cold section end difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940826Y true CN200940826Y (en) | 2007-08-29 |
Family
ID=38747003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620034319 Expired - Fee Related CN200940826Y (en) | 2006-05-26 | 2006-05-26 | Horizontal heater for realizing low dispelling cold section end difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940826Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022719A (en) * | 2010-11-12 | 2011-04-20 | 杭州锅炉集团股份有限公司 | Water supply rectifying device of high-pressure heater |
| CN102249825A (en) * | 2011-04-17 | 2011-11-23 | 安徽盾安民爆器材有限公司 | Quick dredging and heating device for discharged material of ammonium nitrate solution storage tank |
| CN103534549A (en) * | 2011-04-04 | 2014-01-22 | 西屋电气有限责任公司 | Steam generator tube lane flow buffer |
| CN106765047A (en) * | 2017-01-11 | 2017-05-31 | 中国神华能源股份有限公司 | Water level regulation method and apparatus |
| CN107621179A (en) * | 2017-10-18 | 2018-01-23 | 东方电气集团东方锅炉股份有限公司 | Hydrophobic well heat exchangers for district heating built in one kind |
-
2006
- 2006-05-26 CN CN 200620034319 patent/CN200940826Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022719A (en) * | 2010-11-12 | 2011-04-20 | 杭州锅炉集团股份有限公司 | Water supply rectifying device of high-pressure heater |
| CN103534549A (en) * | 2011-04-04 | 2014-01-22 | 西屋电气有限责任公司 | Steam generator tube lane flow buffer |
| CN103534549B (en) * | 2011-04-04 | 2016-07-06 | 西屋电气有限责任公司 | Steam generator tube lane flow buffer |
| CN102249825A (en) * | 2011-04-17 | 2011-11-23 | 安徽盾安民爆器材有限公司 | Quick dredging and heating device for discharged material of ammonium nitrate solution storage tank |
| CN106765047A (en) * | 2017-01-11 | 2017-05-31 | 中国神华能源股份有限公司 | Water level regulation method and apparatus |
| CN107621179A (en) * | 2017-10-18 | 2018-01-23 | 东方电气集团东方锅炉股份有限公司 | Hydrophobic well heat exchangers for district heating built in one kind |
| CN107621179B (en) * | 2017-10-18 | 2023-10-31 | 东方电气集团东方锅炉股份有限公司 | Built-in drain well heat supply network heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20100526 |