CN201096339Y - Million grade single-row disposed horizontal type U pipe type high-pressure heater - Google Patents
Million grade single-row disposed horizontal type U pipe type high-pressure heater Download PDFInfo
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- CN201096339Y CN201096339Y CNU2006200492223U CN200620049222U CN201096339Y CN 201096339 Y CN201096339 Y CN 201096339Y CN U2006200492223 U CNU2006200492223 U CN U2006200492223U CN 200620049222 U CN200620049222 U CN 200620049222U CN 201096339 Y CN201096339 Y CN 201096339Y
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- 238000001816 cooling Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 20
- 241000283216 Phocidae Species 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000005619 thermoelectricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The utility model relates to a million-grade single-row-arranged horizontal U-shaped tubular high-pressure heater. A hemispherical water chamber is arranged at one side of a tube plate; a self-sealing manhole is arranged in the middle of the end of the hemispherical water chamber; a water supply outlet pipe and a water supply inlet pipe are respectively arranged at both sides of the end of the hemispherical water chamber. A shell is arranged at the other side of the tube plate; at least one U-shaped tube is arranged in the shell and both ports of the U-shaped tube are ensured to go through the tube plate. The heater is characterized in that the U-shaped end of the U-shaped tube is guided through a coagulate section; the upper part of the U-shaped tube opening end is guided through an overheat steam cooling section and the lower part of the U-shaped tube opening end is guided through a drainage cooling section; a drainage tube is arranged at one side of the shell; the U-shaped tube is fixed by a U-shaped tube shockproof grid. The heater of the utility model has the advantages that the arrangement of the original million-grade high-pressing heater system is simplified, the number of various instruments and high-pressure heater fittings is reduced by half, the number of water supply pipes is reduced, the loss because of pipe resistance and the workload for instrument maintenance are reduced, the workshop land of power plants is saved and the cost is greatly reduced.
Description
Technical field
The utility model relates to the horizontal U-shaped tubular type high-pressure heater of the single-row layout of a kind of 1,000,000 grades, relate in particular to a kind of horizontal type structure, three U-shaped tubular type high-pressure heaters that heat transfer segment is arranged, can be used for belonging to the high-pressure heater technical field in the high-pressure heater system of the single-row layout in the power station industry vapour heat regenerative system of 1,000,000 grades.
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.At present in the development of the big capacity fired power generating unit of China, horizontal U-shaped pipe high-pressure heater occupies leading position, but in the thermoelectricity of ultra-large type unit as 1,000,000 grades, because the restriction of design, manufacturing capacity, the high-pressure heater system of home and abroad all adopts biserial to arrange at present.But the high adding system that biserial is arranged is more loaded down with trivial details, many one times of the more single-row high-pressure heater of the quantity of supporting valve and blind controller system system, and floor space is big, because capacity is big, so heat exchange area is big, volume is big, causes design, makes difficulty.
Summary of the invention
The purpose of this utility model provides the horizontal U-shaped tubular type high-pressure heater that a kind of energy satisfies the single-row layout of level of 1,000,000 grades.
For realizing above purpose, the technical solution of the utility model provides the horizontal U-shaped tubular type high-pressure heater of the single-row layout of a kind of 1,000,000 grades, comprise the self sealss manhole, hemispheric hydroecium, give water outlet pipe, tube sheet, housing, the U-shaped pipe, with the feed-water inlet pipe, hemispheric hydroecium is located at a side of tube sheet, the self sealss manhole is located in the middle of the hemispheric hydroecium end, be located at the both sides of hemispheric hydroecium end for water outlet pipe and feed-water inlet pipe, housing is located at the opposite side of tube sheet, be provided with many U-shaped pipes at housing, two ports of U-shaped pipe pass tube sheet, it is characterized in that the U-shaped end of U-shaped pipe passes the section of condensing, the superheated steam cooling section is passed in the upper end of U-shaped tube opening end, and hydrophobic cooling section is passed in the lower end, hydrophobic outlet is located at a side of housing, and U-shaped pipe pipe bent position is fixed by U-shaped pipe vibrationproof grid frame.
The high-pressure heater body is because heat exchange area is big, volume causes design greatly, make difficulty, the utility model adopts the single-row U-shaped tubular type of 1,000,000 grade thermoelectricitys height single-row, horizontal, three sections heat transfers to add, system layout is simple, and auxiliary equipment quantity reduces by half, and can significantly reduce cost of investment and floor space.
Because the height of single-row layout adds height that flow arranges than biserial and adds flow and be twice, its thermal shock, thermal stress, steam and hydrophobic impact condition are more serious, the utility model height adds heat exchange and adopts reflux type, be that boiler feedwater enters lower header inflow U-shaped pipe from feed-water inlet, enter the upper level heater by upper tank from flowing out through the hydrophobic cooling section and the section of condensing then with the superheated steam cooling section to water out, after steam enters from steam inlet, be introduced into the superheated steam cooling section, enter the section of condensing then, after utilizing the gasification latent heat heated feed water of saturated gas, condense into saturation water, accumulate in heater base, the siphon port by submersible enters the enclosed hydrophobic cooling section of full flow again, continue release heat, after changing subcooled water into, flow out, flow to the Gao Jia of subordinate again through hydrophobic outlet.
Be in operation for big capacity high heater, because flow-induced is easy to generate the problem that tube bank is resonated, the utility model is taked the fixing tube bank resonance problem that solves of U-shaped pipe vibrationproof grid frame.
Tube bank heat exchange zone is divided into by the character of utilization steam thermal energy: three sections of superheated steam cooling section, the section of condensing and hydrophobic cooling sections, each self-forming is cavate independently, hydrophobic cooling section water sucking mouth is slipped in the condensate water, pass through siphonage, saturation water is sucked in the hydrophobic cooling section, the feedwater of heating tube side, the utility model adopts built-in exhaust apparatus, avoid not concretive gas to corrosion and vibration that tube bank causes, keep heat exchanger tube good heat transfer effect.
Jumbo high-pressure heater is in operation, and the flow-induced vibration takes place easily.But the easiest superheat section and the U-shaped pipe bend place of occurring in of flow-induced vibration.For superheat section, we adopt membrane support, for U-shaped pipe bend place, because the length of its U-shaped pipe bend part of the single-row high-pressure heater of 1,000,000 grade thermoelectricitys is considerably beyond the length of general high voltage heater elbow part.Therefore we have increased U-shaped pipe vibrationproof grid frame and have fixed in the elbow.Shortened the unbraced length of elbow part, guaranteeing that high-pressure heater is in operation can be owing to vibration damage.
The utility model has the advantages that the layout of having simplified the high adding system of former 1,000,000 grades, the quantity of feed water by-pass valve, safety valve, drain regulating valve, gauge valve and various instrument and Gao Jia auxiliary equipment has reduced half, also reduced the quantity of feedwater piping, resistance loss of pipeline and plant maintenance workload have been reduced, save the factory building land used of power plant, investment reduces greatly.
Description of drawings
Fig. 1 is the horizontal U-shaped tubular type high-pressure heater structural representation of the single-row layout of 1,000,000 grades;
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, it is the horizontal U-shaped tubular type high-pressure heater structural representation of the single-row layout of 1,000,000 grades, the horizontal U-shaped tubular type high-pressure heater of the single-row layout of a kind of 1,000,000 grades, comprise self sealss manhole 1, hemispheric hydroecium 2, give water outlet pipe 3, tube sheet 4, housing 7, U-shaped pipe 8, with feed-water inlet pipe 12, hemispheric hydroecium 2 is installed in a side of tube sheet 4, self sealss manhole 1 is located in the middle of hemispheric hydroecium 2 ends, be located at the both sides of hemispheric hydroecium 2 ends for water outlet pipe 3 and feed-water inlet pipe 12, housing 7 is installed in the opposite side of tube sheet 4, be provided with many U-shaped pipes 87 li of housings, the U-shaped end of U-shaped pipe 8 passes the section of condensing 9, superheated steam cooling section 5 is passed in U-shaped pipe 8 openends upper end, hydrophobic cooling section 10 is passed in the lower end, two ports of U-shaped pipe 8 pass tube sheet 4, hydrophobic outlet 11 is located at a side of housing 7, and U-shaped pipe 8 is fixing by U-shaped pipe vibrationproof grid frame 16.
As shown in Figure 2, be superheated steam cooling section structural representation, described superheated steam cooling section 5 is made up of involucrum 14, superheated steam cooling section dividing plate 15 in steam inlet pipe 6, U-shaped pipe 8, superheated steam cooling section outer envelope 13, the superheated steam cooling section, involucrum 14 is installed in the superheated steam cooling section outer envelope 13 in the superheated steam cooling section, superheated steam cooling section dividing plate 15 is installed in parallel in the interior involucrum 14 of superheated steam cooling section, U-shaped pipe 8 passes superheated steam cooling section dividing plate 15, and steam inlet pipe 6 is located on the housing 7 of superheated steam cooling section 5 upper ends.
As shown in Figure 3, be the segment structure schematic diagram that condenses, the described section of condensing 9 is made up of U-shaped pipe 8, the section of condensing large baffle 21, U-shaped pipe vibrationproof grid frame 16 and built-in exhaust apparatus 17, and U-shaped pipe 8 passes the parallel section of condensing large baffle.Built-in exhaust apparatus 17 is installed in interior row's U-shaped pipe inboard.
As shown in Figure 4, be hydrophobic cooling section structural representation, described hydrophobic cooling section 10 is made up of U-shaped pipe 8, thin cold section involucrum 18 and thin cold section dividing plate 19 and sealing arc plate 20, dredges cold section involucrum 18 and is installed in outside the U-shaped pipe 8, and U-shaped pipe 8 passes the thin cold section dividing plate 19 that is parallel to each other.
During work, in the pipe side, boiler feedwater enters lower header 2 from feed-water inlet 12 and flows into U-shaped pipe 8, and through hydrophobic cooling section 10, section of condensing 9 and superheated steam cooling section 5 enter the upper level heater by upper tank from flowing out for water out 3 then.At shell-side, the superheated steam that comes from steam turbine enters superheated steam cooling section 5 by steam connection seat 6, and superheated steam just carries out heat exchange with feedwater in this zone.Steam skims over U-shaped pipe 8 with rational horizontal and vertical flow velocity, to greatest extent heat is passed to feedwater.Steam through heat exchange in superheated steam cooling section 5 laterally flows out from an end that opens wide, and its temperature is near saturation temperature.Superheated steam cooling section 5 shared ratio in heater is strict calculating, make the temperature of outlet steam reasonable, can farthest utilize the degree of superheat of steam, guarantees that again outlet steam is dry saturated steam, can not cause heat-transfer pipe and wash away.Steam the section of condensing coagulate 9 form saturation water after, gather lower housing portion, under the effect of pressure reduction, enter hydrophobic cooling section 10 with the speed of the best from suction inlet.In hydrophobic cooling section 10, saturation water is subjected to the restriction of dividing plate 19, vertical or horizontally skims over U-shaped tube bank outside U-shaped pipe 8, heat is passed to the feedwater of flowing in the heat-transfer pipe, and reduce self temperature, discharges from heater after becoming subcooled water.
Jumbo high-pressure heater is in operation, and the flow-induced vibration takes place easily.But the easiest superheat section and the U-shaped pipe bend place of occurring in of flow-induced vibration.For superheat section, we adopt membrane support, for U-shaped pipe bend place, because the length of its U-shaped pipe bend part of the single-row high-pressure heater of 1,000,000 grade thermoelectricitys is considerably beyond the length of general high voltage heater elbow part.Therefore we have increased proper supporting in the elbow.Shortened the unbraced length of elbow part, guaranteeing that high-pressure heater is in operation can be owing to vibration damage.
Claims (4)
1. the horizontal U-shaped tubular type high-pressure heater of the single-row layout of grade, comprise self sealss manhole (1), hemispheric hydroecium (2), give water outlet pipe (3), tube sheet (4), housing (7), U-shaped pipe (8), with feed-water inlet pipe (12), hemispheric hydroecium (2) is located at a side of tube sheet (4), self sealss manhole (1) is located in the middle of hemispheric hydroecium (2) end, be located at the both sides of hemispheric hydroecium (2) end for water outlet pipe (3) and feed-water inlet pipe (12), housing (7) is located at the opposite side of tube sheet (4), be provided with at least one U-shaped pipe (8) at housing (7), two ports of U-shaped pipe (8) pass tube sheet (4), it is characterized in that, the U-shaped end of U-shaped pipe (8) passes the section of condensing (9), superheated steam cooling section (5) is passed in U-shaped pipe (8) openend upper end, hydrophobic cooling section (10) is passed in the lower end, hydrophobic outlet (11) is located at a side of housing (7), and U-shaped pipe (8) is fixing by U-shaped pipe vibrationproof grid framves (16).
2. the horizontal U-shaped tubular type high-pressure heater of the single-row layout of 1,000,000 grades according to claim 1, it is characterized in that, described superheated steam cooling section (5) is by steam inlet pipe (6), U-shaped pipe (8), superheated steam cooling section outer envelope (13), involucrum (14) in the superheated steam cooling section, superheated steam cooling section dividing plate (15) is formed, involucrum (14) is located in the superheated steam cooling section outer envelope (13) in the superheated steam cooling section, superheated steam cooling section dividing plate (15) is parallel to be located in the interior involucrum (14) of superheated steam cooling section, U-shaped pipe (8) passes superheated steam cooling section dividing plate (15), and steam inlet pipe (6) is located on the housing (7) of superheated steam cooling section (5) upper end.
3. the horizontal U-shaped tubular type high-pressure heater of the single-row layout of 1,000,000 grades according to claim 1, it is characterized in that, the described section of condensing (9) is made up of U-shaped pipe (8), the section of condensing large baffle (21) and built-in exhaust apparatus (17), U-shaped pipe (8) passes the parallel section of condensing large baffle (21), and built-in exhaust apparatus (17) is located at interior row's U-shaped pipe inboard.
4. the horizontal U-shaped tubular type high-pressure heater of the single-row layout of 1,000,000 grades according to claim 1, it is characterized in that, described hydrophobic cooling section (10) is made up of U-shaped pipe (8), thin cold section involucrum (18) and thin cold section dividing plate (19) and sealing arc plate (20), dredge cold section involucrum (18) and be located at outside the U-shaped pipe (8), U-shaped pipe (8) passes the thin cold section dividing plate (19) that is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200492223U CN201096339Y (en) | 2006-12-20 | 2006-12-20 | Million grade single-row disposed horizontal type U pipe type high-pressure heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200492223U CN201096339Y (en) | 2006-12-20 | 2006-12-20 | Million grade single-row disposed horizontal type U pipe type high-pressure heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096339Y true CN201096339Y (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200492223U Expired - Lifetime CN201096339Y (en) | 2006-12-20 | 2006-12-20 | Million grade single-row disposed horizontal type U pipe type high-pressure heater |
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| Country | Link |
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| CN (1) | CN201096339Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660873B (en) * | 2009-09-03 | 2010-12-08 | 上海电气电站设备有限公司 | Shell-and-tube 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 |
| CN102537932A (en) * | 2011-12-31 | 2012-07-04 | 哈尔滨锅炉厂有限责任公司 | 200 MW (Mega Watt) small bypass horizontal U-shaped pipe high-voltage feed water 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 |
| CN104457338A (en) * | 2014-11-27 | 2015-03-25 | 哈尔滨锅炉厂有限责任公司 | Heat exchanging method for horizontal type heat exchanger for steam cooling with high degree of superheat |
| CN107355264A (en) * | 2017-08-14 | 2017-11-17 | 上海电气电站设备有限公司 | The simplified evaluation method that the plasticity that a kind of high-pressure heater prevents collapses |
| CN112518190A (en) * | 2020-10-16 | 2021-03-19 | 青岛畅隆重型装备有限公司 | High-pressure heater and preparation device for steam turbine |
-
2006
- 2006-12-20 CN CNU2006200492223U patent/CN201096339Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660873B (en) * | 2009-09-03 | 2010-12-08 | 上海电气电站设备有限公司 | Shell-and-tube 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 |
| CN102537932A (en) * | 2011-12-31 | 2012-07-04 | 哈尔滨锅炉厂有限责任公司 | 200 MW (Mega Watt) small bypass horizontal U-shaped pipe high-voltage feed water 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 |
| CN104457338A (en) * | 2014-11-27 | 2015-03-25 | 哈尔滨锅炉厂有限责任公司 | Heat exchanging method for horizontal type heat exchanger for steam cooling with high degree of superheat |
| CN107355264A (en) * | 2017-08-14 | 2017-11-17 | 上海电气电站设备有限公司 | The simplified evaluation method that the plasticity that a kind of high-pressure heater prevents collapses |
| CN107355264B (en) * | 2017-08-14 | 2019-05-28 | 上海电气电站设备有限公司 | A kind of simplified evaluation method that high-pressure heater prevents plasticity from collapsing |
| CN112518190A (en) * | 2020-10-16 | 2021-03-19 | 青岛畅隆重型装备有限公司 | High-pressure heater and preparation device for steam turbine |
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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: 20080815 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080815 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: 20080806 |
|
| EXPY | Termination of patent right or utility model |