CN100333822C - Drier - Google Patents
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- CN100333822C CN100333822C CNB200410091470XA CN200410091470A CN100333822C CN 100333822 C CN100333822 C CN 100333822C CN B200410091470X A CNB200410091470X A CN B200410091470XA CN 200410091470 A CN200410091470 A CN 200410091470A CN 100333822 C CN100333822 C CN 100333822C
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- corrugated sheet
- corrugated
- drier
- plate
- hydrophobic
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Abstract
The present invention relates to a device for drying gas or steam, particularly to a drier used in a steam generator in a nuclear power station, or in a drum boiler in a heat power plant. The present invention comprises a separate space which is composed of a top plate, side sealing plates, a porous plate and a water collecting tank, wherein a corrugated plate assembly is arranged in the separate space, the corrugated plate subassembly which is arranged on supporting bars is formed by the arrangement of a plurality of corrugated plates, and a plurality of drainage hook plates are arranged on each of the corrugated plates in spot welding; the gaps among the drainage hook plates and the corrugated plates are drainage channels, and a distance piece is arranged between every two corrugated plates; the drainage channels are formed by both sides of the drainage hook plate and the corrugated plates respectively, and thereby, the corrugated plate became a double hook corrugated plate. The width of the drainage channel shrinks from the steam flow inlet of the corrugated plate to the steam flow outlet of the corrugated plate. The drier has the advantages of higher critical flow velocity of the steam, better separating effect and smaller size.
Description
Technical field
The present invention relates to equipment, be specifically related in a kind of nuclear power station steam generator or the drier in thermal power station's dum boiler gas or steam drying.
Background technology
Drier is positioned at the top of nuclear power station steam generator or thermal power station's dum boiler, and its effect is that the fine liquid particles that steam carries is separated, and provides quality qualified dry saturated steam to steam turbine, guarantees safety, the economical operation of steam turbine.Steam turbine is high and low arbitrarily downgrade between dress resuperheat drier be to provide quality qualified saturated vapor for low-pressure stage to steam turbine.Existing nuclear power plant steam generator drier adopts single hook corrugated sheet, and adjacent waveform plate structure as shown in Figure 4.Corrugated sheet 15 among Fig. 4, hydrophobic hook plate 16 and distance block 17 are vital parts of drier.Corrugated sheet 15 is connected with hydrophobic hook plate 16 spot welding, and distance block 17 is used for keeping the distance between the adjacent corrugated sheet, and play a part to compress, the fixed waveform plate.Steam water interface enters the corrugated sheet assembly along the direction of arrow among the figure, and separated water flows out from hydrophobic ditch, and steam then flows out from the passage between the corrugated sheet.Hydrophobic ditch width C remains unchanged.Drier is double-deck arranged in squares, and each layer is made of 4 corrugated sheet assemblies, and the top of drier is equipped with even perforate porous plate.This steam generator drier adopts single hook corrugated sheet, and the inlet steam critical flow velocity is lower, and the drier volume is big, has taken space simplified on the bigger steam generator.Even perforate porous plate is installed in the top of drier, and all the vapour effect is bad.
Summary of the invention
The object of the present invention is to provide a kind of design form of novel dried device, its steam critical flow velocity is higher, and separating effect is better, and the volume of drier is littler.
Technical scheme of the present invention is as follows: a kind of drier, comprise the separated space that constitutes by top board, side seal board, porous plate and water leg, be provided with the corrugated sheet assembly in the separated space, the corrugated sheet assembly is placed on the support strip, the corrugated sheet assembly is arranged by several corrugated sheets and is constituted, point is welded with several hydrophobic hook plates on the every corrugated sheet, space between hydrophobic hook plate and the corrugated sheet is hydrophobic ditch, be provided with distance block between two corrugated sheets, the both sides of said hydrophobic hook plate constitute hydrophobic ditch with corrugated sheet respectively, thereby make corrugated sheet become the double hook corrugated sheet; From the enter the mouth steam flow outlet of corrugated sheet of the steam flow of corrugated sheet, the width of hydrophobic ditch reduces gradually.
As above said drier, wherein the perforate aperture on the porous plate reduces from bottom to top gradually.
Drier of the present invention adopts double hook corrugated sheet structure, form one between hydrophobic hook plate and the corrugated sheet and had only the very passage of narrow slot, water in this passage flows downward under the gravity effect, the water that flows into hydrophobic ditch can not be subjected to the impact and the interference of steam flow in the hydrophobic ditch of almost sealing, thereby flows into water leg swimmingly.The hydrophobic ditch width of corrugated sheet exports gradually from entering the mouth to and reduces, and the actual internal area of hydrophobic ditch place steam water interface increases gradually, and flow velocity reduces gradually, and the water droplet of being taken away again by steam flow also reduces.Reduce the hydrophobic ditch of outlet section place vapor (steam) velocity, help to improve the separating effect of drier.When vapor (steam) velocity was big, because that the hydrophobic ditch of single hook corrugated sheet is met the vapour area is bigger, steam flow was taken away the water that has separated in the hydrophobic ditch easily again.Water-air test shows when the drier inlet air flow velocity is 7.5m/s, adopt corrugated sheet of the present invention testpieces carry coefficient ratio adopt US Westinghouse company's drier to carry coefficient little by 35%, than the testpieces that adopts single hook corrugated sheet to carry coefficient little by 50%.It is more little to carry coefficient, and separative efficiency is just high more.Porous plate of the present invention is non-homogeneous perforate, and the aperture reduces from bottom to top.The effect of this porous plate is the bottom of steam flow being guided into drier, reaches to make the equally distributed purpose of steam flow.The equal vapour effect of porous plate is good more, and its separating effect is just good more.Cold test show adopt porous plate testpieces of the present invention carry coefficient ratio US Westinghouse company porous plate corrugated sheet assembly to carry coefficient little by 20%.
Description of drawings
Fig. 1 is the sectional elevation figure of drier of the present invention.
Fig. 2 is the horizontal sectional drawing of drier of the present invention.
Fig. 3 is the corrugated sheet structural representation of drier of the present invention.
Fig. 4 is the corrugated sheet structural representation of prior art drier.
Fig. 5 is a corrugated sheet hold down gag structural representation.
Fig. 6 is the perforated plate construction schematic diagram.
Shrouding 11. hold down gags before 1. top boards, 2. porous plates, 3. corrugated sheet assemblies, 4. support strip, 5. water legs, 6. hydrophobic box 7. drain pipes 8. back shroudings 9. side seal boards 10. among Fig. 1, Fig. 2
12. corrugated sheets, 13. hydrophobic hook plate 14. distance blocks among Fig. 3
15. corrugated sheets, 16. hydrophobic hook plate 17. distance blocks among Fig. 4
Shrouding in the middle of 18. housing screws, 19. clamp nuts, 20. pressing plates, 21. hinge seats, 22. hinge arms, 23. locating pieces 24. among Fig. 5
The specific embodiment
As shown in Figure 1 and Figure 2, top board 1, side seal board 9, porous plate 2 and water leg 5 weld together, form the separated space of drier, be provided with corrugated sheet assembly 3 in the separated space, 3 of corrugated sheet groups are placed on the support strip 4, and corrugated sheet assembly 3 is arranged by several corrugated sheets and constituted, water leg 5 bottoms are provided with hydrophobic box 6 and drain pipe 7, steam water interface enters drier from porous plate 2, flows to water leg 5 after water wherein is separated, and hydrophobic box 6 of process and drain pipe 7 enter the hydrospace of steam generator.The shape of corrugated sheet is processed in the inboard of side seal board 9, pastes tightly mutually with corrugated sheet assembly 3, has prevented that steam from locating short circuit at this.Be provided with hold down gag 11 in the centre position of corrugated sheet assembly 3.
As shown in Figure 3, point is welded with several hydrophobic hook plates 13 on the every corrugated sheet 12, and the space between hydrophobic hook plate 13 and the corrugated sheet 12 is hydrophobic ditch, is provided with distance block 14 between two corrugated sheets, distance block 14 is used for determining the distance between the adjacent corrugated sheet, and works to be fixed corrugated sheet.The both sides of hydrophobic hook plate 13 constitute hydrophobic ditch with corrugated sheet 12 respectively, thereby make corrugated sheet become the double hook corrugated sheet.This structure makes hydrophobic ditch inner chamber relatively not be subjected to the disturbance or the impact of steam flow, has reduced the possibility of once more water being brought into steam flow; In addition, the actual internal area of drain water is bigger downwards, has improved hydrophobic ability.Another characteristics of corrugated sheet are the enter the mouth steam flow outlets of corrugated sheet of steam flow from corrugated sheet among the present invention, and the width C of hydrophobic ditch reduces gradually, is reduced to 1.3mm from 3.9mm.Can reduce the hydrophobic ditch of outlet section place vapor (steam) velocity like this, reduce the water that will separate once more and brought the possibility of steam flow into, thereby improve the critical inlet steam flow velocity of drier, also just improve the separating effect of drier.
As shown in Figure 5, the set hold down gag in corrugated sheet assembly centre position comprises two groups of hinge arms 22, and hinge arms 22 flexibly connects by pin and hinge seat 21, and hinge seat 21 is located on the axis, axis top is provided with pressing plate 20, and pressing plate 20 tops are provided with housing screw 18 and clamp nut 19; Hold down gag also comprises two and the contacted middle shrouding 24 of corrugated sheet assembly, and middle shrouding 24 inboards are provided with locating piece 23, and hinge arms 22 is supported on the locating piece 23.When corrugated sheet need be changed, can unclamp housing screw 18, twist clamp nut 19 downwards, unclamp hold down gag after, corrugated sheet is taken out.This structure helps reducing the size of drier and the Maintenance and Repair of corrugated sheet assembly.
As shown in Figure 6, the non-homogeneous perforate of porous plate, aperture D1 reduces from bottom to top gradually, is reduced to 11mm from 13.5mm.This porous plate of evidence is respond well for the equal vapour of corrugated sheet assembly that individual layer is arranged in parallel.
Hot demonstration test under nuclear power plant's normal running conditions shows that dryer export steam moisture of the present invention is 0.0018%, much smaller than the humidity index of million kilowatt PWR nuclear power plant steam generator outlet steam 0.1%.
Claims (6)
1. drier, comprise by top board (1), side seal board (9), the separated space that porous plate (2) and water leg (5) are constituted, be provided with corrugated sheet assembly (3) in the separated space, corrugated sheet assembly (3) is placed on the support strip (4), corrugated sheet assembly (3) is arranged by several corrugated sheets and is constituted, every corrugated sheet (12) is gone up point and is welded with several hydrophobic hook plates (13), space between hydrophobic hook plate (13) and the corrugated sheet (12) is hydrophobic ditch, be provided with distance block (14) between two corrugated sheets (12), it is characterized in that: the both sides of said hydrophobic hook plate (13) constitute hydrophobic ditch with corrugated sheet (12) respectively, thereby make corrugated sheet become the double hook corrugated sheet.
2. a kind of drier as claimed in claim 1 is characterized in that: the air stream outlet from the air flow inlet of corrugated sheet (12) to corrugated sheet, the width of hydrophobic ditch reduces gradually.
3. a kind of drier as claimed in claim 1 is characterized in that: the perforate aperture on the said porous plate (2) reduces from bottom to top gradually.
4. as claim 1 or 2 or 3 described a kind of driers, it is characterized in that: be provided with hold down gag (11) in the centre position of said corrugated sheet assembly (3), this hold down gag comprises two groups of hinge arms (22), hinge arms (22) flexibly connects by pin and hinge seat (21), hinge seat (21) is located on the axis, axis top is provided with pressing plate (20), and pressing plate (20) top is provided with housing screw (18) and clamp nut (19); Hold down gag also comprises two and the contacted middle shrouding (24) of corrugated sheet assembly, and middle shrouding (24) inboard is provided with locating piece (23), and hinge arms (22) is supported on the locating piece (23).
5. as claim 1 or 2 or 3 described a kind of driers, it is characterized in that: the inboard of said side seal board (9) is designed to the shape of ripple, pastes tightly mutually with corrugated sheet.
6. a kind of drier as claimed in claim 4 is characterized in that: the inboard of said side seal board (9) is designed to the shape of ripple, pastes tightly mutually with corrugated sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410091470XA CN100333822C (en) | 2004-11-24 | 2004-11-24 | Drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410091470XA CN100333822C (en) | 2004-11-24 | 2004-11-24 | Drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1778452A CN1778452A (en) | 2006-05-31 |
| CN100333822C true CN100333822C (en) | 2007-08-29 |
Family
ID=36768987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410091470XA Active CN100333822C (en) | 2004-11-24 | 2004-11-24 | Drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100333822C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2489511B (en) * | 2011-03-31 | 2018-07-18 | General Electric Technology Gmbh | Improved apparatus for separating out droplets of liquid entrained in a gas or a vapour |
| CN104324556B (en) * | 2013-07-22 | 2016-08-31 | 中国核动力研究设计院 | Waveform steam-water separation plate in a kind of nuclear power station steam generator and drier |
| CN105498464A (en) * | 2016-01-11 | 2016-04-20 | 上海核工程研究设计院 | Jacking device for dryer of pressurized water reactor steam generator |
| CN106737375B (en) * | 2017-01-18 | 2019-05-03 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of corrugated sheet assembly building away from adjustment device and corrugated sheet assembly technology |
| CN109966868A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of boxlike corrugated sheet drier |
| CN112403209A (en) * | 2019-08-20 | 2021-02-26 | 核动力运行研究所 | Corrugated plate steam-water separation element |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4897206A (en) * | 1988-11-30 | 1990-01-30 | Facet Quantek, Inc. | Bidirectionally corrugated plate separator for fluid mixtures |
| CN2475460Y (en) * | 2001-03-15 | 2002-02-06 | 青岛捷能汽轮机股份有限公司 | Steam-water separator |
| CN2745637Y (en) * | 2004-11-24 | 2005-12-14 | 核动力运行研究所 | Drier |
-
2004
- 2004-11-24 CN CNB200410091470XA patent/CN100333822C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4897206A (en) * | 1988-11-30 | 1990-01-30 | Facet Quantek, Inc. | Bidirectionally corrugated plate separator for fluid mixtures |
| CN2475460Y (en) * | 2001-03-15 | 2002-02-06 | 青岛捷能汽轮机股份有限公司 | Steam-water separator |
| CN2745637Y (en) * | 2004-11-24 | 2005-12-14 | 核动力运行研究所 | Drier |
Non-Patent Citations (1)
| Title |
|---|
| 立式蒸汽发生器中蒸汽干燥器的研究与进展 丁训慎，核动力工程，第14卷第2期 1993 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1778452A (en) | 2006-05-31 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20060531 Assignee: China Nuclear Power Operation Technology Co., Ltd. Assignor: Nuclear Power Running Inst. Contract record no.: 2010420000063 Denomination of invention: Conduit type normal temperature dehumidifier for peanut Granted publication date: 20070829 License type: Exclusive License Record date: 20100521 |
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