CN200958905Y - Reversed high-pressure heater of triple heat-transferring U-shaped tube - Google Patents
Reversed high-pressure heater of triple heat-transferring U-shaped tube Download PDFInfo
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- CN200958905Y CN200958905Y CN 200620046956 CN200620046956U CN200958905Y CN 200958905 Y CN200958905 Y CN 200958905Y CN 200620046956 CN200620046956 CN 200620046956 CN 200620046956 U CN200620046956 U CN 200620046956U CN 200958905 Y CN200958905 Y CN 200958905Y
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- cooling section
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- superheated steam
- steam cooling
- condensing
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Abstract
The utility model relates to an inverted three section heat transfer U tube type high pressure heater which is characterized in that a water chamber is arranged in an inverted way below a shell through a pipe board, the water chamber, pipe board and the shell are connected through welding. A U tube is arranged on the pipe board, an overheating steam cooling segment and a drain cooling segment are arranged on the pipe board side by side. The overheating steam cooling segment is higher than drain cooling segment, an condensing segment is arranged on the upper ends of the overheating steam cooling segment and drain cooling segment, a steam inlet pipe is arranged on one side of the shell near the pipe board and is connected with the overheating steam cooling segment in the shell, a drain outlet is arranged on the other side of the shell and is connected with the drain cooling segment, a build in exhaust device is arranged on the condensing segment. The device is mainly applied to the condensing engine regenerative systems of generating plant industry. The utility model has the advantages of small floor space and easy arrangement thanks to the inverted type, thereby making the structure of a factory building more compact. Furthermore, the utility model ensures an application of high grade steam to the largest extent thanks to the three segment type.
Description
Technical field
The utility model relates to a kind of inverted, three sections heat transfer U-shaped tubular type high-pressure heaters, can be used for the steam turbine heat regenerative system of power station industry, belongs to the high-pressure heater technical field.
Background technology
High-pressure feed-water heater is the device that utilizes the heated feed water that draws gas of steam turbine, and it can improve power plant thermal efficiency, fuel saving, and help unit safety operation.In the development of the big capacity fired power generating unit of China, horizontal U-shaped pipe high-pressure heater occupies leading position at present, but the floor space of horizontal U-shaped pipe high-pressure heater is big, is difficult for arranging.
Summary of the invention
The purpose of this utility model is that a kind of floor space of invention is little, is easy to arrange, can make factory building compacter inverted, three sections heat transfer U-shaped tubular type high-pressure heaters.
For realizing above purpose, the technical solution of the utility model provides a kind of inverted, three sections heat transfer U-shaped tubular type high-pressure heaters, it is characterized in that, by hemispheric hydroecium, tube sheet, housing, the superheated steam cooling section, the section of condensing, built-in exhaust apparatus, the U-shaped pipe, hydrophobic cooling section is formed, hydroecium is upside down in the below of housing by tube sheet, hydroecium adopts welding manner to be connected with tube sheet and housing, the U-shaped pipe is located on the tube sheet, superheated steam cooling section and hydrophobic cooling section are located on the tube sheet side by side, the superheated steam cooling section is higher than hydrophobic cooling section, the section of condensing is located at superheated steam cooling section and hydrophobic cooling section upper end, the steam inlet pipe is located at housing one side near tube sheet, link to each other with the superheated steam cooling section in the housing, the opposite side of housing is provided with hydrophobic outlet, hydrophobic outlet is connected with hydrophobic cooling section, and built-in exhaust apparatus is located on the section of condensing.
The lowest water level that the utility model allows must be higher than dredges cold section involucrum, the peak level that allows must be lower than superheated steam cooling section involucrum, and leave certain surplus, the erosion control baffle plate of steam is changed into by original embedded welding and is placed in interior involucrum top, pattern with angle welding is fixed, and has strengthened the ability of its protection against erosion.The utility model has improved the impingement baffle material simultaneously, the stainless steel SA240 that adopts ASME to recommend, the thermal expansivity of this sheet material is consistent with carbon steel, toughness and intensity are better, because of it and heater have identical coefficient of thermal expansion, can avoid because of the different weld crackings that cause of material coefficient of thermal expansion rate, the stress of also having avoided thermal expansion to bring in the time of protection against erosion is concentrated.Steam flows out from the opening of interior involucrum again after steaming cold section dividing plate water conservancy diversion.Be steam through between the interior outer envelope of steam cooling section, flowing out after the heat exchange, these are different with original inverted high-pressure heater, the latter is flowed out in the outlet of Backpack type behind the dividing plate water conservancy diversion.Existing outlet has strengthened the space that steam flows, and can control flow velocity better.And be provided with the end plate that seals with interior involucrum in superheated steam cooling section exit, the perforation required precision height of end plate, should reduce the gap of pipe and pore as far as possible, utilize surface tension to prevent in the hydrophobic superheated steam cooling section that bleeds of condensation of end plate upper surface accumulation, the gap of outer envelope and housing stack shell adopts sealing ring to seal, and on outer envelope, open aperture, and make the inside and outside pressure balance of outer envelope, influence weld seam to avoid pressure reduction.
The utility model section of condensing adopts large baffle, do not adopt the dividing plate of original pressure stream, steam flows freely in the section of condensing, and on the dividing plate of the section of condensing side, set up water fender, hydrophobic that steam condenses into flowed along water fender, and under hydrophobic cooling section effluent, thereby further avoid the hydrophobic superheated steam cooling section that enters.
In addition, the utility model has designed built-in exhaust apparatus, and the non-condensing gas that is in operation enters exhaust apparatus from the aperture of dry pipe, finally discharges at the operation exhaust outlet, can avoid non-condensing gas to the corrosion that tube bank causes, and keeps the good heat transfer effect.After installing built-in exhaust apparatus, on the pipeline of operation exhaust, throttling arrangement need not be set.
The plant area that the utility model has the advantages that power plant has been saved, and investment reduces greatly.Improved superheated steam cooling section steam (vapor) outlet, impingement baffle have been controlled the flow velocity of steam and washing away tube bank better.The section of condensing design large baffle and water fender have further increased the circulation area of steam and have prevented the hydrophobic superheated steam cooling section that enters.Reasonably distribute arrange superheated steam cooling section, the hydrophobic cooling section of the section of condensing make superheated steam in cold section of steaming with the flow rate of the best, expeditiously with heat transferred water, and because vapor (steam) temperature is very high, the thermograde of conducting heat is big, can farthest improve the outlet temperature of feedwater.Adopt built-in exhaust apparatus can remove non-condensing gas effectively, improve the heat exchange effect.
Description of drawings
Fig. 1 is inverted, three sections heat transfer U-shaped tubular type high-pressure heater structural representations;
Fig. 2 is a superheated steam cooling section structural representation;
Fig. 3 is the segment structure schematic diagram that condenses;
Fig. 4 is hydrophobic cooling section structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, for inverted, three sections heat transfer U-shaped tubular type high-pressure heater structural representations, described inverted, three sections heat transfer U-shaped tubular type high-pressure heaters are by hemispheric hydroecium 1, tube sheet 2, housing 3, superheated steam cooling section 4, the section of condensing 5, built-in exhaust apparatus 6, U-shaped pipe 7, hydrophobic cooling section 8 is formed, hydroecium 1 is upside down in the below of housing 3 by tube sheet 2, hydroecium 1 adopts welding manner to be connected with tube sheet 2 and housing 3, U-shaped pipe 7 is located on the tube sheet 2, superheated steam cooling section 4 and hydrophobic cooling section 8 are located on the tube sheet 2 side by side, superheated steam cooling section 4 is higher than hydrophobic cooling section 8, the section of condensing 5 is located at superheated steam cooling section 4 and hydrophobic cooling section 8 upper ends, connect by U-shaped pipe 7, U-shaped pipe 7 is located on the tube sheet 2, superheated steam cooling section 4 and hydrophobic cooling section 8 are passed in the lower end, the section of condensing 5 is passed in the upper end, steam inlet pipe 10 is located at housing 3 one sides near tube sheet 2, link to each other with the superheated steam cooling section 4 in the housing, the opposite side of housing 3 is provided with hydrophobic outlet 21, hydrophobic outlet 21 is connected with hydrophobic cooling section 8, and built-in exhaust apparatus 6 is located on the section of condensing 5.
Described hydroecium 1 is a semi-spherical shape, and the lower end is provided with dismountable self sealss manhole 22, and both sides are provided with water inlet pipe and water outlet pipe and are water inlet pipe 23 and the outlet pipe 24 that angle is connected with pipeline.
As shown in Figure 2, be superheated steam cooling section structural representation, described superheated steam cooling section 4 is by U-shaped pipe 7, superheated steam cooling section outer envelope 9, steam inlet pipe 10, stainless steel impingement baffle 11, involucrum 12 in the superheated steam cooling section, superheated steam cooling section dividing plate 13, superheated steam cooling section end plate 14 and sealing ring 15 are formed, involucrum 12 is located in the superheated steam cooling section outer envelope 9 in the superheated steam cooling section, stainless steel impingement baffle 11 is located at involucrum 12 1 sides in the superheated steam cooling section, facing to steam inlet pipe 10, superheated steam cooling section dividing plate 13 parallel being located in the interior involucrum 12 of superheated steam cooling section, U-shaped pipe 7 passes superheated steam cooling section dividing plate 13, and superheated steam cooling section end plate 14 and sealing ring 15 are located at the top of involucrum 12 in the superheated steam cooling section.
Steam flows out from the tapping of superheated steam cooling section outer envelope 9 again behind superheated steam cooling section dividing plate 13 water conservancy diversion, be steam through after the heat exchange from flowing out between the superheated steam cooling section outer envelope 9, these are different with original inverted high-pressure heater, and the latter is that the outlet at Backpack type is flowed out behind the dividing plate water conservancy diversion.Existing outlet has strengthened the space that steam flows, and can control flow velocity better.And be provided with the end plate 14 that seals with interior involucrum in superheated steam cooling section exit, the perforation required precision height of end plate, should reduce the gap of pipe and pore as far as possible, utilize surface tension to prevent in the hydrophobic superheated steam cooling section that bleeds of condensation of end plate 14 upper surfaces accumulation.The gap of outer envelope and housing stack shell adopts sealing ring to seal, and opens aperture on outer envelope, makes the inside and outside pressure balance of outer envelope, influences weld seam to avoid pressure reduction.
Described stainless steel impingement baffle 11 materials are stainless steel SA240, the thermal expansivity of this sheet material is consistent with carbon steel, toughness and intensity are better, because of it and heater have identical coefficient of thermal expansion, can avoid because of the different weld crackings that cause of material coefficient of thermal expansion rate, the stress of also having avoided thermal expansion to bring in the time of protection against erosion is concentrated.
As shown in Figure 3, be the segment structure schematic diagram that condenses, the described section of condensing 5 is made up of U-shaped pipe 7, the section of condensing large baffle 16 and the section of condensing water fender 17, and U-shaped pipe 7 passes the parallel section of condensing large baffle 16 and the section of condensing water fender 17.
As shown in Figure 4, be hydrophobic cooling section structural representation, described hydrophobic cooling section 8 is made up of U-shaped pipe 7, thin cold section web 18, thin cold section involucrum 19 and thin cold section dividing plate 20, dredges cold section web 18 and is located at a side of dredging cold section involucrum 19, and U-shaped pipe 7 passes the thin cold section dividing plate 20 that is parallel to each other.
During work, the superheated steam that comes from steam turbine enters in superheated steam cooling section outer envelope 9 and the superheated steam cooling section 12 of involucrums by steam inlet pipe 10, lateral flow perforate of involucrum 12 to the superheated steam cooling section enters involucrum 12 in the superheated steam cooling section, stainless steel steam baffle 11 is installed in superheated steam cooling section outer envelope 9 avoids the steam of HTHP directly to impact involucrum 12 in the superheated steam cooling section, then put superheated steam cooling section dividing plate 13 and pull bar etc. in the involucrum 12 in the superheated steam cooling section and fix U-shaped pipe 7, superheated steam just carries out heat exchange with feedwater in this district.Superheated steam cooling section dividing plate 13 adopts cutting form, force steam to skim over U-shaped pipe 7 with rational horizontal and vertical flow velocity, to greatest extent heat is passed to feedwater and guaranteed that tube bank does not produce excessive vibrations, flow out through the steam of heat exchange another tapping of involucrum 12 in the superheated steam cooling section, enter the section of condensing 5, flow freely at the section of condensing 5 steam, what condense hydrophobicly flows into hydrophobic cooling section 8 under the water conservancy diversion of the section of condensing water fender 17, and under the water conservancy diversion of hydrophobic cooling section dividing plate 20, enter hydrophobic outlet 21 and flow out heaters, simultaneously, when steam condenses in the section of condensing, non-condensing gas constantly enters exhaust apparatus 6 and discharges from the operation exhaust outlet, avoided the corrosion of non-condensing gas to tube bank, kept the good heat transfer effect, feedwater enters hydroecium 1 from import 24, because of stopping of hydroecium 1 demarcation strip, enter the pipe in the hydrophobic cooling section 8, enter the section of condensing 5 again, enter superheated steam cooling section 4 at last and enter subordinate equipment from exporting 23.
Claims (6)
- One kind inverted, three sections heat transfer U-shaped tubular type high-pressure heaters, it is characterized in that, by hemispheric hydroecium (1), tube sheet (2), housing (3), superheated steam cooling section (4), the section of condensing (5), built-in exhaust apparatus (6), U-shaped pipe (7), hydrophobic cooling section (8) is formed, hydroecium (1) is upside down in the below of housing (3) by tube sheet (2), hydroecium (1) is connected with tube sheet (2) and housing (3), U-shaped pipe (7) is located on the tube sheet (2), superheated steam cooling section (4) and hydrophobic cooling section (8) are located on the tube sheet (2) side by side, superheated steam cooling section (4) is higher than hydrophobic cooling section (8), the section of condensing (5) is located at superheated steam cooling section (4) and hydrophobic cooling section (8) upper end, connect by U-shaped pipe (7), U-shaped pipe (7) is located on the tube sheet (2), superheated steam cooling section (4) and hydrophobic cooling section (8) are passed in the lower end, the section of condensing (5) is passed in the upper end, steam inlet pipe (10) is located at housing (3) one sides near tube sheet (2), link to each other with the superheated steam cooling section (4) in the housing, the opposite side of housing (3) is provided with hydrophobic outlet (21), hydrophobic outlet (21) is connected with hydrophobic cooling section (8), and built-in exhaust apparatus (6) is located on the section of condensing (5).
- 2. inverted, three sections heat transfer U-shaped tubular type high-pressure heaters according to claim 1, it is characterized in that, described hydroecium (1) is a semi-spherical shape, the lower end is provided with dismountable self sealss manhole (22), and both sides are provided with water inlet pipe and water outlet pipe and are water inlet pipe (23) and the outlet pipe (24) that angle is connected with pipeline.
- 3. according to claim 1 inverted, three sections heat transfer U-shaped tubular type high-pressure heaters, it is characterized in that, described superheated steam cooling section (4) is by U-shaped pipe (7), superheated steam cooling section outer envelope (9), steam inlet pipe (10), stainless steel impingement baffle (11), involucrum (12) in the superheated steam cooling section, superheated steam cooling section dividing plate (13), superheated steam cooling section end plate (14) and sealing ring (15) are formed, involucrum (12) is located in the superheated steam cooling section outer envelope (9) in the superheated steam cooling section, stainless steel impingement baffle (11) is located at involucrum (12) one sides in the superheated steam cooling section, facing to steam inlet pipe (10), superheated steam cooling section dividing plate (13) is parallel to be located in the interior involucrum (12) of superheated steam cooling section, U-shaped pipe (7) passes superheated steam cooling section dividing plate (13), and superheated steam cooling section end plate (14) and sealing ring (15) are located at the top of involucrum (12) in the superheated steam cooling section.
- 4. inverted, three sections heat transfer U-shaped tubular type high-pressure heaters according to claim 3 is characterized in that described stainless steel impingement baffle (11) material is stainless steel SA240.
- 5. inverted, three sections heat transfer U-shaped tubular type high-pressure heaters according to claim 1, it is characterized in that, the described section of condensing (5) is made up of U-shaped pipe (7), the section of condensing large baffle (16) and the section of condensing water fender (17), and U-shaped pipe (7) passes the parallel section of condensing large baffle (16) and the section of condensing water fender (17).
- 6. inverted, three sections heat transfer U-shaped tubular type high-pressure heaters according to claim 1, it is characterized in that, described hydrophobic cooling section (8) is made up of U-shaped pipe (7), thin cold section web (18), thin cold section involucrum (19) and thin cold section dividing plate (20), dredge cold section web (18) and be located at a side of dredging cold section involucrum (19), U-shaped pipe (7) passes the thin cold section dividing plate (20) that is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620046956 CN200958905Y (en) | 2006-10-20 | 2006-10-20 | Reversed high-pressure heater of triple heat-transferring U-shaped tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620046956 CN200958905Y (en) | 2006-10-20 | 2006-10-20 | Reversed high-pressure heater of triple heat-transferring U-shaped tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958905Y true CN200958905Y (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620046956 Expired - Lifetime CN200958905Y (en) | 2006-10-20 | 2006-10-20 | Reversed high-pressure heater of triple heat-transferring U-shaped tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200958905Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799254A (en) * | 2010-03-16 | 2010-08-11 | 上海电气电站设备有限公司 | U-shaped tube high-pressure heater for thermal power unit |
| CN101839470A (en) * | 2010-03-16 | 2010-09-22 | 上海电气电站设备有限公司 | U-shaped tube high pressure heater for nuclear power generating unit |
| CN102052663A (en) * | 2010-12-23 | 2011-05-11 | 哈尔滨锅炉厂有限责任公司 | Stepped partition plate device of large-sized nuclear power inverted high pressure water supply heater |
| CN102434874A (en) * | 2011-12-15 | 2012-05-02 | 哈尔滨锅炉厂有限责任公司 | Nuclear power horizontal high-pressure water supply heater and heating method |
| CN102798116A (en) * | 2012-08-26 | 2012-11-28 | 哈尔滨锅炉厂有限责任公司 | Horizontal-type three-section thermal power high-pressure feed-water heater and heating method |
| CN103673723A (en) * | 2013-12-21 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Heat exchanger of shell pass integral wrapped shell structure |
| CN106287653A (en) * | 2016-09-27 | 2017-01-04 | 东方电气集团东方锅炉股份有限公司 | Cold segment structure dredged by horizontal type U pipe type feed-water heater |
-
2006
- 2006-10-20 CN CN 200620046956 patent/CN200958905Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799254A (en) * | 2010-03-16 | 2010-08-11 | 上海电气电站设备有限公司 | U-shaped tube high-pressure heater for thermal power unit |
| CN101839470A (en) * | 2010-03-16 | 2010-09-22 | 上海电气电站设备有限公司 | U-shaped tube high pressure heater for nuclear power generating unit |
| CN102052663A (en) * | 2010-12-23 | 2011-05-11 | 哈尔滨锅炉厂有限责任公司 | Stepped partition plate device of large-sized nuclear power inverted high pressure water supply heater |
| CN102052663B (en) * | 2010-12-23 | 2015-06-03 | 哈尔滨锅炉厂有限责任公司 | Stepped partition plate device of large-sized nuclear power inverted high pressure water supply heater |
| CN102434874A (en) * | 2011-12-15 | 2012-05-02 | 哈尔滨锅炉厂有限责任公司 | Nuclear power horizontal high-pressure water supply heater and heating method |
| CN102434874B (en) * | 2011-12-15 | 2015-06-24 | 哈尔滨锅炉厂有限责任公司 | Nuclear power horizontal high-pressure water supply heater and heating method |
| CN102798116A (en) * | 2012-08-26 | 2012-11-28 | 哈尔滨锅炉厂有限责任公司 | Horizontal-type three-section thermal power high-pressure feed-water heater and heating method |
| CN102798116B (en) * | 2012-08-26 | 2016-12-21 | 哈尔滨锅炉厂有限责任公司 | Horizontal-type three-section thermal power high-pressure feed-water heater and heating |
| CN103673723A (en) * | 2013-12-21 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Heat exchanger of shell pass integral wrapped shell structure |
| CN103673723B (en) * | 2013-12-21 | 2015-09-09 | 哈尔滨锅炉厂有限责任公司 | The heat exchanger of the overall containment structure of shell side |
| CN106287653A (en) * | 2016-09-27 | 2017-01-04 | 东方电气集团东方锅炉股份有限公司 | Cold segment structure dredged by horizontal type U pipe type feed-water heater |
| CN106287653B (en) * | 2016-09-27 | 2019-01-29 | 东方电气集团东方锅炉股份有限公司 | Horizontal type U pipe type feed-water heater dredges cold segment structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER STATION EQUIPMENT CO. Free format text: FORMER OWNER: SHANGHAI POWER EQUIPMENT CO., LTD. Effective date: 20080801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080801 Address after: No. 188, Chun Chun Road, Shanghai, Minhang District: 201100 Patentee after: Shanghai Electric Station Equipment Co., Ltd. Address before: Shanghai City, Yangpu District Yangshupu Road 1900, zip code: 200090 Patentee before: Shanghai Power Apparatus Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071010 |
|
| EXPY | Termination of patent right or utility model |