CN106287653A - Cold segment structure dredged by horizontal type U pipe type feed-water heater - Google Patents
Cold segment structure dredged by horizontal type U pipe type feed-water heater Download PDFInfo
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- CN106287653A CN106287653A CN201610853479.2A CN201610853479A CN106287653A CN 106287653 A CN106287653 A CN 106287653A CN 201610853479 A CN201610853479 A CN 201610853479A CN 106287653 A CN106287653 A CN 106287653A
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- section
- base plate
- cold
- water heater
- segment structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/26—Feed-water heaters, i.e. economisers or like preheaters with means, other than tubes, to separate water and heating medium, e.g. bulk heaters without internal flues or tubes, jacketted smoke-boxes or flue or flues
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The present invention relates to a kind of power plant auxiliary machine, and disclose a kind of horizontal type U pipe type feed-water heater and dredge cold segment structure, this is dredged cold section and has double-contracting shell and its cross section substantially in bowl-type, dredge cold section by interior involucrum (6), outer envelope (5), top board (1), superheat section base plate (9), base plate (8) and end plate (2) composition, wherein, interior involucrum (6), top board (1), base plate (8) and end plate (2) are interconnected to constitute the inner chamber of thin cold section, outer envelope (5), superheat section base plate (9), base plate (8) and end plate (2) are interconnected to constitute the exocoel of thin cold section, in, sealing plate (7) it is provided with between outer envelope, superheat section base plate (9) is provided with outage (15), outer envelope (5) top is provided with steam vent (14), gripper shoe (4) it is provided with between base plate (8) and housing (3).The thin cold segment structure of the present invention can reduce heat exchange area allowance, thus improves the economy of equipment.
Description
Technical field
The present invention relates to a kind of power plant auxiliary machine, especially a kind of horizontal type U pipe type feed-water heater.
Background technology
Horizontal type U pipe type high-pressure feed-water heater is the visual plant improving power station economy, according to heat transfer type not
With, heater generally can be divided into superheat section, saturated section and thin cold section.The superheat section of heater utilizes the sensible heat of extracted steam from turbine
Heating the feedwater in U-tube, the latent heat that saturated section of utilization is drawn gas, to the feedwater heating in U-tube, is dredged cold section and is then utilized condensation
The sensible heat of water heats the feedwater in U-tube.Thin cold section of employing hydrocone type structure of horizontal type U pipe type high-pressure feed-water heater,
It is drawn into next stage Gao Jianei by dredging cold section of outer saturation water by involucrum.One is abutted against up and down owing to dredging cold section and superheat section
Rising, the steam going out superheat section can contact with dredging cold section, thus reheats dredging cold section of interior subcooled water, so may make height
The lower end difference of pressure feed-water heater is the most up to standard, in order to solve this problem, it is common that dredging cold section of reserved certain heat exchange area
Allowance, to reduce superheated steam to thin cold section of interior hydrophobic heat affecting again, but the most also can make to dredge cold section of total heat-transfer surface
Long-pending reduction, thus cause the waste of heat exchange area, affect the economy that equipment runs.
Summary of the invention
The technical problem to be solved is to provide a kind of horizontal type U pipe type feed-water heater and dredges cold segment structure, should
Dredge cold segment structure and can reduce heat exchange area allowance, thus improve the economy of equipment.
The technical solution adopted for the present invention to solve the technical problems is: cold section of knot dredged by horizontal type U pipe type feed-water heater
Structure, described heater includes housing, is positioned at thin cold section and tube sheet of housing, and described thin cold section is fixed on housing and tube sheet,
Described dredge cold section there is double-contracting shell, and dredge the cross section of cold section substantially in bowl-type, dredge cold section by interior involucrum, outer envelope, top board, mistake
Hot arc base plate, base plate and end plate composition, wherein, described interior involucrum, top board, base plate and end plate are interconnected to constitute thin cold section
Inner chamber, described outer envelope, superheat section base plate, base plate and end plate is interconnected to constitute the exocoel of thin cold section.
Further, it is provided with sealing plate between described interior involucrum and outer envelope.
Further, described superheat section base plate is provided with outage.
Further, described outer envelope top is provided with steam vent.
Further, it is provided with one piece of insulation board between superheat section and thin cold section near described tube sheet side.
Further, it is provided with gripper shoe between described base plate and housing.
The invention has the beneficial effects as follows: superheated steam can be effectively isolated, reduce superheated steam to dredging cold section of interior dredging
The heat affecting again of water, thus reduce the heat exchange area allowance dredging cold section, and then improve the economy of equipment.
Accompanying drawing explanation
Fig. 1 is the front view of the horizontal type U pipe type feed-water heater of the present invention.
Fig. 2 is the side view of the horizontal type U pipe type feed-water heater of the present invention.
Fig. 3 is the enlarged drawing in Fig. 1 at I.
Fig. 4 is the enlarged drawing in Fig. 2 at II.
Fig. 5 is the side view of interior involucrum.
Fig. 6 is the front view of interior involucrum.
Fig. 7 is the side view of outer envelope.
Fig. 8 is the front view of outer envelope.
Fig. 9 is the top view of superheat section base plate.
Figure 10 be sealing plate structural representation.
Figure 11 is the structural representation of base plate.
Figure 12 is the structural representation of gripper shoe.
Figure is labeled as: 1-top board, 2-end plate, 3-housing, 4-gripper shoe, 5-outer envelope, involucrum in 6-, 7-sealing plate,
8-base plate, 9-superheat section base plate, 10-insulation board, 11-tube sheet connecting plate, 12-housing connecting plate, 13-tube sheet, 14-steam vent,
15-outage.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1-Figure 12, the horizontal type U pipe type feed-water heater of the present invention includes housing 3, tube sheet 13 and dredges cold section,
Described thin cold section has double-contracting shell and its cross section substantially in bowl-type, dredges cold section by interior involucrum 6, outer envelope 5, top board 1, superheat section
Base plate 9, base plate 8 and end plate 2 form, and wherein, described interior involucrum 6, top board 1, base plate 8 and end plate 2 seals against each other welding and constitute
Dredging the inner chamber of cold section, described outer envelope 5, superheat section base plate 9, base plate 8 and end plate 2 seals against each other welding and constitutes outside thin cold section
Chamber, described inside and outside involucrum is curved surface involucrum, and described top board 1, base plate 8, superheat section base plate 9 are rectangular slab, top board 1
Do not weld with leaving gap between superheat section base plate 9, so can avoid when superheat section base plate 9 and top board 1 are heated and expand
Time and the destruction that causes inconsistent due to the differential expansion of the two.Described thin cold section by its top board 1 respectively be welded in tube sheet in advance
Tube sheet connecting plate 11 and the housing connecting plate 12 being welded in advance on housing 3 on 13 fix connection, cold in order to further enhance dredging
Fixing of section, is provided with one piece of gripper shoe 4 on the base plate 8 dredge cold section, and the other end of gripper shoe 4 is fixing with housing 3 to be connected.Due to
Thin cold section of the present invention is double-contracting shell structure, it is possible to effectively stop the superheated steam of superheat section to directly heat in thin cold section
Supercool hydrophobic, thus reduce superheated steam to supercool hydrophobic heat affecting again, and then the heat exchange area of thin cold section can be reduced
Allowance, it is to avoid the waste of heat exchange area, thus reach the purpose of raising equipment economy.
In order to further enhance the thin cold section of isolation effect to superheated steam and more efficiently reduce superheated steam pair
Dredge cold section of interior supercool hydrophobic heat affecting again, be provided with between described interior involucrum 6 and outer envelope 5 and curved surface involucrum shape phase
The sealing plate 7 of coupling.
Heater, before operation, is dredged in the exocoel of cold section and can be there is a certain amount of air, in order to ensure the normal of heater
Safe operation, needs to remove this partial air, so being provided with steam vent 14 at the top of outer envelope 5.It addition, in order to drain
The water under high pressure produced in hot arc, is provided with outage 15 on superheat section base plate 9.
In order to make tube sheet 13 not affected by the superheated steam of superheat section, cold with thin at the superheat section near tube sheet 13 side
Being provided with one piece of insulation board 10 between Duan, this insulation board 10 can stop superheated steam directly to contact with tube sheet 13 effectively, thus
Avoid the superheated steam impact on tube sheet 13.
Claims (6)
1. cold segment structure dredged by horizontal type U pipe type feed-water heater, and described heater includes housing (3), is positioned at dredging of housing (3)
Cold section and tube sheet (13), described thin cold section is fixed on housing (3) and tube sheet (13), it is characterised in that: described thin cold section has
Double-contracting shell, and dredge the cross section of cold section substantially in bowl-type, dredge cold section by interior involucrum (6), outer envelope (5), top board (1), superheat section
Base plate (9), base plate (8) and end plate (2) composition, wherein, described interior involucrum (6), top board (1), base plate (8) and end plate (2) phase
Connecting and constitute the inner chamber dredging cold section, described outer envelope (5), superheat section base plate (9), base plate (8) and end plate (2) are connected with each other
Constitute the exocoel dredging cold section.
Cold segment structure dredged by horizontal type U pipe type feed-water heater the most according to claim 1, it is characterised in that: described interior bag
Sealing plate (7) it is provided with between shell (6) and outer envelope (5).
Cold segment structure dredged by horizontal type U pipe type feed-water heater the most according to claim 1, it is characterised in that: described overheated
Section base plate (9) is provided with outage (15).
Cold segment structure dredged by horizontal type U pipe type feed-water heater the most according to claim 1, it is characterised in that: described outsourcing
Shell (5) top is provided with steam vent (14).
Cold segment structure dredged by horizontal type U pipe type feed-water heater the most according to claim 1, it is characterised in that: near described
It is provided with one piece of insulation board (10) between superheat section and thin cold section of tube sheet (13) side.
Cold segment structure dredged by horizontal type U pipe type feed-water heater the most according to claim 1, it is characterised in that: described base plate
And between housing (3), be provided with gripper shoe (4) (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853479.2A CN106287653B (en) | 2016-09-27 | 2016-09-27 | Horizontal type U pipe type feed-water heater dredges cold segment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853479.2A CN106287653B (en) | 2016-09-27 | 2016-09-27 | Horizontal type U pipe type feed-water heater dredges cold segment structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106287653A true CN106287653A (en) | 2017-01-04 |
| CN106287653B CN106287653B (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610853479.2A Active CN106287653B (en) | 2016-09-27 | 2016-09-27 | Horizontal type U pipe type feed-water heater dredges cold segment structure |
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| Country | Link |
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| CN (1) | CN106287653B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388584A (en) * | 2017-08-25 | 2017-11-24 | 东方电气集团东方锅炉股份有限公司 | A kind of wealthy through-flow heater guiding device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1808166A (en) * | 1930-04-30 | 1931-06-02 | Nat Pipe Bending Company | Water heater |
| CN2753964Y (en) * | 2004-12-16 | 2006-01-25 | 上海动力设备有限公司 | Superheated steam cooling device for surface horizontal heater |
| CN200958905Y (en) * | 2006-10-20 | 2007-10-10 | 上海动力设备有限公司 | Reversed high-pressure heater of triple heat-transferring U-shaped tube |
| CN201190987Y (en) * | 2008-04-14 | 2009-02-04 | 上海电气电站设备有限公司 | High pressure heater with DCZ end plate |
| CN206094019U (en) * | 2016-09-27 | 2017-04-12 | 东方电气集团东方锅炉股份有限公司 | Horizontal U -shaped tubular feed water heater dredges cold segment structure |
-
2016
- 2016-09-27 CN CN201610853479.2A patent/CN106287653B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1808166A (en) * | 1930-04-30 | 1931-06-02 | Nat Pipe Bending Company | Water heater |
| CN2753964Y (en) * | 2004-12-16 | 2006-01-25 | 上海动力设备有限公司 | Superheated steam cooling device for surface horizontal heater |
| CN200958905Y (en) * | 2006-10-20 | 2007-10-10 | 上海动力设备有限公司 | Reversed high-pressure heater of triple heat-transferring U-shaped tube |
| CN201190987Y (en) * | 2008-04-14 | 2009-02-04 | 上海电气电站设备有限公司 | High pressure heater with DCZ end plate |
| CN206094019U (en) * | 2016-09-27 | 2017-04-12 | 东方电气集团东方锅炉股份有限公司 | Horizontal U -shaped tubular feed water heater dredges cold segment structure |
Non-Patent Citations (1)
| Title |
|---|
| 阎磊等: "《正置立式高压加热器的设计及组焊技术》", 《锅炉制造》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388584A (en) * | 2017-08-25 | 2017-11-24 | 东方电气集团东方锅炉股份有限公司 | A kind of wealthy through-flow heater guiding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106287653B (en) | 2019-01-29 |
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