CN105333752A - Steam-steam heat exchanger - Google Patents
Steam-steam heat exchanger Download PDFInfo
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- CN105333752A CN105333752A CN201410381709.0A CN201410381709A CN105333752A CN 105333752 A CN105333752 A CN 105333752A CN 201410381709 A CN201410381709 A CN 201410381709A CN 105333752 A CN105333752 A CN 105333752A
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Abstract
The invention discloses a steam-steam heat exchanger, and relates to the field of tower type solar photo-thermal cooperative production. The steam-steam heat exchanger comprises a heat exchanger shell and a steam exhaust pipeline. An overheating steam inlet is formed in one end of the heat exchanger shell, and an unsaturated water outlet is formed in the other end of the heat exchanger shell; and the steam exhaust pipeline penetrates the interior of the heat exchanger shell. According to the steam-steam heat exchanger, heat exchange between exhausted steam and the overheating steam can be achieved, and the exhausted steam heated by the steam-steam heat exchanger can successively enter a coal-fired boiler to be further heated. The temperature of the exhausted steam heated by the steam-steam heat exchanger is increased, that is, reheating steam inlet parameters of the coal-fired boiler can be improved, and therefore heat, absorbed from the coal-fired boiler, of the exhausted steam can be reduced, and the coal consumption of the coal-fired boiler can be reduced.
Description
Technical field
The present invention relates to tower type solar photothermal cogeneration field, be specifically related to a kind of vapour vapour heat exchanger.
Background technology
Tower type solar system utilizes solar power generation, and its restriction being subject to the time is heavier, under the prerequisite of solar heat-preservation device is not built in reduction investment, sunrise to positive morning a period of time because of solar energy not enough, its use is restricted.Further, along with the difference in season, tower type solar system is not high in the use amount in sunlight not enough season.
Coal-burning boiler is generating equipment conventional at present, and coal-burning boiler uses coal-fired as fuel, and the heat after fired coal combustion, through transforming, produces steam or hot water, for subsequent power generation.
Summary of the invention
One of them object of the present invention proposes a kind of vapour vapour heat exchanger, in order to improve coal-burning boiler reheated steam intake condition during photothermal cogeneration.
For achieving the above object, the invention provides following technical scheme:
The invention provides a kind of vapour vapour heat exchanger, comprise outer cover of heat exchanger and exhaust steam pipeline;
One end of described outer cover of heat exchanger offers superheated steam import, and the other end of described outer cover of heat exchanger offers unsaturated water outlet;
Described exhaust steam pipeline is through the inside of described outer cover of heat exchanger.
Vapour vapour heat exchanger as above, preferably, described outer cover of heat exchanger inside is provided with dividing plate, and the quantity of described dividing plate is at least one piece;
Described dividing plate is arranged between described superheated steam import and the outlet of described unsaturated water, and described dividing plate is used for being formed with circulation passage between described superheated steam import and the outlet of described unsaturated water;
The circulation passage directly formed between described superheated steam import and the outlet of described unsaturated water is shorter than the circulation passage formed via described dividing plate between described superheated steam import and the outlet of described unsaturated water.
Vapour vapour heat exchanger as above, preferably, described dividing plate is platy structure, and described dividing plate is crossing with described exhaust steam pipeline, described dividing plate is provided with the through hole for making described exhaust steam pipeline pass.
Vapour vapour heat exchanger as above, preferably, described dividing plate is at least two pieces, and each described dividing plate be arranged in parallel;
In two pieces of adjacent described dividing plates, wherein one piece of described outer cover of heat exchanger inwall near described superheated steam import side is arranged, and there is space between this dividing plate and the described outer cover of heat exchanger inwall exporting side near described unsaturated water; Another block is arranged near the described outer cover of heat exchanger inwall of described unsaturated water outlet side, and there is space between the described outer cover of heat exchanger inwall of this dividing plate and close described superheated steam import side.
Vapour vapour heat exchanger as above, preferably, described outer cover of heat exchanger is cuboid or cylindrical-shaped structure;
Described exhaust steam pipeline is arranged along the length direction of described outer cover of heat exchanger; Described superheated steam import and the outlet of described unsaturated water lay respectively at the two ends of described outer cover of heat exchanger length direction, and lay respectively at the both sides of described outer cover of heat exchanger width.
Vapour vapour heat exchanger as above, preferably, described outer cover of heat exchanger is cuboid or cylindrical-shaped structure;
Described exhaust steam pipeline is arranged along the width of described outer cover of heat exchanger; Described superheated steam import and the outlet of described unsaturated water lay respectively at the two ends of described outer cover of heat exchanger length direction, and lay respectively at the both sides of described outer cover of heat exchanger length direction.
Vapour vapour heat exchanger as above, preferably, described outer cover of heat exchanger is cylindrical-shaped structure, the plate-like structure of described dividing plate semicircular in shape.
Vapour vapour heat exchanger as above, preferably, the two ends of described exhaust steam pipeline are all positioned at the outside of described outer cover of heat exchanger; And/or
The quantity of described exhaust steam pipeline is at least two, and each described exhaust steam pipeline is arranged in parallel.
Vapour vapour heat exchanger as above, preferably, each described exhaust steam pipeline is straight tube structure.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
In technique scheme, for the exhaust steam that the outlet passing into high pressure cylinder exports in exhaust steam pipeline, the superheated steam import of outer cover of heat exchanger is for passing into the superheated steam of the heat collector superheated steam outlet output of solar thermal collector.The superheat steam temperature of input is very high, can carry out heat exchange, to heat low-temperature steam exhaust with the ducted low-temperature steam exhaust of exhaust steam.In the process of above-mentioned heating low-temperature steam exhaust, heat collector superheated steam exports the superheated steam heat release and cooling that export, will be condensed into water, and export output by unsaturated water.From above-mentioned, above-mentioned vapour vapour heat exchanger can realize the heat exchange between exhaust steam and superheated steam, is further heated by the follow-up coal-burning boiler that can enter into of exhaust steam of vapour vapour heat exchanger heating.Via the exhaust steam after the heating of vapour vapour heat exchanger, exhaust steam temperature is promoted, and namely coal-burning boiler reheated steam intake condition is improved, therefore can reduce the heat that exhaust steam need absorb from coal-burning boiler, and then reduces the Coal-fired capacity of coal-burning boiler.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The cross-sectional schematic of the vapour vapour heat exchanger that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is Fig. 1 left view;
Fig. 3 is that the A-A of Fig. 1 is to cross-sectional schematic;
Fig. 4 is that the B-B of Fig. 1 is to cross-sectional schematic;
Fig. 5 is the structural representation of Fig. 1 median septum;
The schematic diagram of vapour vapour heat exchanger applications in tower type solar and coal-burning boiler photothermal cogeneration system that Fig. 6 provides for the embodiment of the present invention;
Reference numeral:
1, from the high feedwater added of final stage; 2, coal-burning boiler feedwater; 3, feedwater along separate routes;
4, coal-burning boiler; 5, solar thermal collector recirculated water; 6, booster pump;
8, solar thermal collector; 7, solar thermal collector feedwater; 14, high pressure cylinder;
13, superheated steam; 9, tower type solar superheated steam; 16, bypass exhaust steam;
17, main road exhaust steam; 12, coal-burning boiler superheated steam; 18, vapour vapour heat exchanger;
10, tower type solar vapour vapour heat exchanger superheated steam; 19, unsaturated water;
11, tower type solar high pressure cylinder superheated steam; 21, total exhaust steam;
22, superheated steam import; 23, unsaturated water outlet; 24, dividing plate;
15, high pressure cylinder outlet exhaust steam; 20, high parameter bypass exhaust steam; 27, outer cover of heat exchanger;
25, vapour vapour heat exchanger high-voltage cylinder exhaust steam import; 28, exhaust steam pipeline;
26, vapour vapour heat exchanger high-voltage cylinder exhaust steam outlet.
Detailed description of the invention
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 6 carries out specifically to technical scheme provided by the invention, arbitrary technological means provided by the invention is carried out replace or all should within protection scope of the present invention by the technical scheme that two or more technological means or technical characteristic carry out mutually combining and obtain provided by the invention arbitrarily.
See Fig. 1 ~ Fig. 5, the embodiment of the present invention provides a kind of vapour vapour heat exchanger 18, is preferably applied to tower type solar and coal-burning boiler photothermal cogeneration system.This vapour vapour heat exchanger 18 comprises outer cover of heat exchanger 27 and exhaust steam pipeline 28.One end of outer cover of heat exchanger 27 offers superheated steam import 22, and the other end of outer cover of heat exchanger 27 offers unsaturated water outlet 23; Exhaust steam pipeline 28 is through the inside of outer cover of heat exchanger 27.
Coal-burning boiler system has coal-burning boiler 4 and steam turbine.Above-mentioned vapour vapour heat exchanger 18 has four interfaces, vapour vapour heat exchanger 18 is arranged between two groups of parts, one group is the outlet of the high pressure cylinder 14 of steam turbine and the vapor inlet port of coal-burning boiler 4, another group is between the entrance of the superheated steam outlet of the heat collector of tower type solar and the solar thermal collector 8 of tower type solar, the superheated steam exported for utilizing solar thermal collector 8 realizes the heating to the exhaust steam that the outlet of high pressure cylinder 14 exports, to improve the reheated steam intake condition entering coal-burning boiler 4.
One end of the entrance of exhaust steam pipeline 28 is as vapour vapour heat exchanger high-voltage cylinder exhaust steam import 25, and one end of the outlet of exhaust steam pipeline 28 is as vapour vapour heat exchanger high-voltage cylinder exhaust steam outlet 26.Further, the two ends of exhaust steam pipeline 28 all can be positioned at the outside of outer cover of heat exchanger 27, so that the connection of exhaust steam pipeline 28 and miscellaneous part.
Exhaust steam pipeline 28 adopts the good material of heat exchange performance, such as metal material etc.The Main Function of above-mentioned vapour vapour heat exchanger 18 is: the exhaust steam exported by the exhaust steam outlet of the high pressure cylinder 14 of vapour vapour heat exchanger 18 and the exchange heat of part tower type solar superheated steam 9 make the exhaust steam Q factor that part tower type solar superheated steam 9 becomes unsaturated water, the high pressure cylinder 14 of coal-burning boiler 4 exports be improved.
For passing into the exhaust steam that high pressure cylinder 14 exports in exhaust steam pipeline 28, the superheated steam import 22 of outer cover of heat exchanger 27 is for passing into the tower type solar vapour vapour heat exchanger superheated steam 10 of the heat collector superheated steam outlet output of solar thermal collector 8.Tower type solar vapour vapour heat exchanger superheated steam 10 temperature of input is very high, can carry out heat exchange, to heat low-temperature steam exhaust with the low-temperature steam exhaust in exhaust steam pipeline 28.In the process of above-mentioned heating low-temperature steam exhaust, heat collector superheated steam exports the superheated steam heat release and cooling that export, will be condensed into water, and exports 23 outputs by unsaturated water.
From above-mentioned, above-mentioned vapour vapour heat exchanger 18 can realize the heat exchange between exhaust steam and superheated steam, is further heated by the follow-up coal-burning boiler 4 that can enter into of exhaust steam that vapour vapour heat exchanger 18 heats.Via the exhaust steam after the heating of vapour vapour heat exchanger 18, exhaust steam temperature is promoted, and namely enters coal-burning boiler 4 reheated steam intake condition and is improved, reduce the heat that exhaust steam need absorb from coal-burning boiler 4, and then reduces the Coal-fired capacity of coal-burning boiler 4.
See Fig. 1, outer cover of heat exchanger 27 inside is provided with dividing plate 24, and the quantity of dividing plate 24 is at least one piece; Dividing plate 24 is arranged between superheated steam import 22 and unsaturated water outlet 23, and dividing plate 24 for being formed with circulation passage between superheated steam import 22 and unsaturated water outlet 23.Wherein, the circulation passage directly formed between superheated steam import 22 and unsaturated water outlet 23 is shorter than the circulation passage formed via dividing plate 24 between superheated steam import 22 and unsaturated water outlet 23.
The circulation passage directly formed between superheated steam import 22 and unsaturated water outlet 23 refers to the circulation passage that outer cover of heat exchanger 27 is formed when not arranging dividing plate 24 between superheated steam import 22 and unsaturated water outlet 23, if to remove the dividing plate in Fig. 1, this circulation passage is straight substantially.The circulation passage formed via dividing plate 24 between superheated steam import 22 and unsaturated water outlet 23 refers to the circulation passage that outer cover of heat exchanger 27 is formed when being provided with dividing plate 24 between superheated steam import 22 and unsaturated water outlet 23, shown in Fig. 1, this circulation passage is tortuous.
Dividing plate 24 can be parallel to exhaust steam pipeline 28 and arrange or crossingly with exhaust steam pipeline 28 to arrange, and is preferably mutually vertical, hereafter will introduces in detail.After dividing plate 24 is set, passage between superheated steam import 22 and unsaturated water outlet 23 is not single straight channel, but tortuous passageway, the length of flow of the superheated steam entered from superheated steam import 22 can be extended like this, to strengthen the heat exchange of superheated steam and the inner exhaust steam of exhaust steam pipeline 28.
See Fig. 2 ~ Fig. 5, dividing plate 24 is platy structure; Dividing plate 24 is crossing with exhaust steam pipeline 28, dividing plate 24 is provided with the through hole for making exhaust steam pipeline 28 pass.Gap between the inwall of the through hole on dividing plate 24 and exhaust steam pipeline 28 should be smaller, can flow to make superheated steam along the circulation passage of formation between each dividing plate 24.
Further, the quantity of exhaust steam pipeline 28 is at least two, and each exhaust steam pipeline 28 be arranged in parallel, and is preferably straight tube structure, so that install.On dividing plate 24, the setting position of through hole is determined by each exhaust steam pipeline 28.
See Fig. 2 ~ Fig. 5, in the present embodiment, dividing plate 24 is at least two pieces, and each dividing plate 24 be arranged in parallel.In two pieces of adjacent dividing plates 24, wherein one piece of outer cover of heat exchanger 27 inwall near superheated steam import 22 side is arranged, and there is space between this dividing plate 24 and outer cover of heat exchanger 27 inwall exporting 23 side near unsaturated water.Outer cover of heat exchanger 27 inwall that another block exports 23 side near unsaturated water is arranged, and there is space between outer cover of heat exchanger 27 inwall of this dividing plate 24 and close superheated steam import 22 side.
Outer cover of heat exchanger 27 can be specifically cuboid or cylindrical-shaped structure; Exhaust steam pipeline 28 is arranged along the length direction of outer cover of heat exchanger 27.
The superheated steam entered for making superheated steam import 22 and exhaust steam pipeline 28 fully carry out heat exchange, superheated steam import 22 and unsaturated water outlet 23 lay respectively at the two ends of outer cover of heat exchanger 27 length direction, and lay respectively at the both sides of outer cover of heat exchanger 27 width.Setting like this, makes superheated steam and exhaust steam all need the whole length flowing through outer cover of heat exchanger 27 to flow out.
Hold above-mentioned, the superheated steam entered to make superheated steam import 22 and exhaust steam pipeline 28 carry out heat exchange more fully, and further, outer cover of heat exchanger 27 inside is provided with dividing plate 24, and the quantity of dividing plate 24 is at least two pieces.Wherein one piece of dividing plate 24 in two pieces of adjacent dividing plates 24 is arranged on the width of outer cover of heat exchanger 27 near the side of superheated steam import 22, and another block dividing plate 24 is arranged on the width of outer cover of heat exchanger 27 near the side of unsaturated water outlet 23.Two pieces of adjacent dividing plates 24 interval on the length direction of outer cover of heat exchanger 27 is arranged.Each dividing plate 24 is less than the width dimensions of outer cover of heat exchanger 27 along the size of the width of outer cover of heat exchanger 27.
Each piece of dividing plate 24 plays guide functions, makes superheated steam be merely able to flow along the flow-guiding channel surrounded between dividing plate 24 and outer cover of heat exchanger 27.
Further, outer cover of heat exchanger 27 is cylindrical-shaped structure, the plate-like structure of dividing plate 24 semicircular in shape.
Be understandable that, following manner also can be adopted to arrange: outer cover of heat exchanger 27 is in cuboid or cylindrical-shaped structure.Exhaust steam pipeline 28 is arranged along the width of outer cover of heat exchanger 27; Superheated steam import 22 and unsaturated water outlet 23 lay respectively at the two ends of outer cover of heat exchanger 27 length direction, and lay respectively at the both sides of outer cover of heat exchanger 27 length direction.
The schematic diagram of vapour vapour heat exchanger applications in tower type solar and coal-burning boiler photothermal cogeneration system that Fig. 6 provides for the embodiment of the present invention, see Fig. 6, tower type solar and coal-burning boiler photothermal cogeneration system comprise the vapour vapour heat exchanger 18 that coal-burning boiler 4, solar thermal collector 8, steam turbine and the arbitrary technical scheme of the present invention provide.Wherein, the boiler overheating steam outlet of coal-burning boiler 4 is connected with the entrance of the high pressure cylinder 14 of steam turbine, the heat collector superheated steam outlet of solar thermal collector 8 is connected with the superheated steam import 22 of vapour vapour heat exchanger 18 and the entrance of high pressure cylinder 14 simultaneously, the outlet of high pressure cylinder 14 is connected with the entrance of the exhaust steam pipeline 28 of vapour vapour heat exchanger 18 and the vapor inlet port of coal-burning boiler 4 simultaneously, and the outlet of the exhaust steam pipeline 28 of vapour vapour heat exchanger 18 is also connected with the vapor inlet port of coal-burning boiler 4.
Solar thermal collector plays effect solar thermal collector feedwater 7 heating being become tower type solar superheated steam 9.Hold above-mentioned, coal-burning boiler system, except comprising above-mentioned coal-burning boiler 4, also can comprise steam turbine etc.Coal-burning boiler 4 is common boiler, and steam turbine is common back pressure turbine.
See Fig. 6, exchange heat is carried out in the part or all of exhaust steam that the outlet of the part superheated steam that solar thermal collector 8 produces and high pressure cylinder 14 exports; Superheated steam after heat release becomes unsaturated water, and circulation continues heat absorption towards solar thermal collector 8 and becomes superheated steam; After high pressure cylinder exhaust steam quality in vapour vapour heat exchanger 18 after heat absorption is improved, enters coal-burning boiler 4 heat absorption and become reheated steam.
See Fig. 6, above-mentioned tower type solar and coal-burning boiler photothermal cogeneration system also comprise booster pump 6; The unsaturated water outlet 23 of vapour vapour heat exchanger 18 is connected with the entrance of booster pump 6, and the outlet of booster pump 6 is connected with the entrance of solar thermal collector 8.Booster pump 6 is for feedwater 3 superchargings along separate routes.
See Fig. 6, above-mentioned tower type solar and coal-burning boiler photothermal cogeneration system also comprise water supply line, for exporting from the high feedwater 1 added of final stage; The entrance of water supply line is connected with the entrance of booster pump 6 and the water inlet of coal-burning boiler 4 respectively.
As shown in Figure 6, coal-burning boiler feedwater 12 and feedwater 3 is along separate routes divided into from the high feedwater 1 added of final stage; Coal-burning boiler feedwater 2 heat absorption in coal-burning boiler 4 becomes coal-burning boiler superheated steam 12; After feedwater 3 and solar thermal collector recirculated water 5 mix along separate routes, after the booster pump 6 of solar thermal collector 8 pressurizes, become solar thermal collector feedwater 7; Solar thermal collector feedwater 7 is become tower type solar superheated steam 9 by heating in solar thermal collector 8.Tower type solar superheated steam 9 is divided into two parts, a part is for leading to the tower type solar vapour vapour heat exchanger superheated steam 10 of the superheated steam import 22 of vapour vapour heat exchanger 18, after the coal-burning boiler superheated steam 12 that remainder tower type solar high pressure cylinder superheated steam 11 and coal-burning boiler 4 produce is mixed into superheated steam 13, do work towards high pressure cylinder 14; The superheated steam 13 finishing merit in high pressure cylinder 14 becomes high pressure cylinder outlet exhaust steam 15; High pressure cylinder outlet exhaust steam 15 is divided into bypass exhaust steam 16 and main road exhaust steam 17 two parts; Bypass exhaust steam 16 enters vapour vapour heat exchanger high-voltage cylinder exhaust steam import 25; Tower type solar vapour vapour heat exchanger superheated steam 10 becomes unsaturated water 19 in vapour vapour heat exchanger 18 after heat radiation, and bypass exhaust steam 16 becomes high parameter bypass exhaust steam 20 in vapour vapour heat exchanger 18 after heat absorption; High parameter bypass exhaust steam 20 and main road exhaust steam 17 are mixed into total exhaust steam 21; Reheated steam is become after coal-burning boiler 4 heat absorption is led in total exhaust steam 21.
As shown in Figure 1 to 4, tower type solar vapour vapour heat exchanger superheated steam 10 enters vapour vapour heat exchanger 18 by superheated steam import 22; Tower type solar vapour vapour heat exchanger superheated steam 10 flows between outer cover of heat exchanger 27 and exhaust steam pipeline 28, and the dividing plate 24 of vapour vapour heat exchanger 18 plays the effect of water conservancy diversion; Tower type solar vapour vapour heat exchanger superheated steam 10 becomes unsaturated water 19 after heat exchange in vapour vapour heat exchanger 18, exports 23 flow out by the unsaturated water of vapour vapour heat exchanger 18; Bypass exhaust steam 16 enters exhaust steam pipeline 28 by vapour vapour heat exchanger high-voltage cylinder exhaust steam import 25; Bypass exhaust steam 16 becomes high parameter bypass exhaust steam 20 and exports 26 discharges by the exhaust steam of vapour vapour heat exchanger high-voltage cylinder carry out heat exchange in vapour vapour heat exchanger 18 after.
Technique scheme, makes coal-burning boiler 4 one aspect improve the quality of reheated steam, improves unit efficiency on the other hand; Meanwhile, boiler controller system saves certain fire coal; And overcome coal-burning boiler 4 reheat steam temperature problem on the low side; Overcome the problem of solar thermal collector blowdown; Overcome intensity of illumination not up to standard time the solar energy problem that cannot use; Improve unit efficiency, take full advantage of the solar energy resources of China's abundance.In addition, said system also can stablize when solar energy impinges intensity is not strong, Effec-tive Function.
If employ the word such as " first ", " second " herein to limit parts, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to parts, the implication that above-mentioned word is not special.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (9)
1. a vapour vapour heat exchanger, is characterized in that, comprises outer cover of heat exchanger and exhaust steam pipeline;
One end of described outer cover of heat exchanger offers superheated steam import, and the other end of described outer cover of heat exchanger offers unsaturated water outlet;
Described exhaust steam pipeline is through the inside of described outer cover of heat exchanger.
2. vapour vapour heat exchanger according to claim 1, is characterized in that, described outer cover of heat exchanger inside is provided with dividing plate, and the quantity of described dividing plate is at least one piece;
Described dividing plate is arranged between described superheated steam import and the outlet of described unsaturated water, and described dividing plate is used for being formed with circulation passage between described superheated steam import and the outlet of described unsaturated water;
The circulation passage directly formed between described superheated steam import and the outlet of described unsaturated water is shorter than the circulation passage formed via described dividing plate between described superheated steam import and the outlet of described unsaturated water.
3. vapour vapour heat exchanger according to claim 2, is characterized in that, described dividing plate is platy structure, and described dividing plate is crossing with described exhaust steam pipeline, described dividing plate is provided with the through hole for making described exhaust steam pipeline pass.
4. vapour vapour heat exchanger according to claim 3, it is characterized in that, described dividing plate is at least two pieces, and each described dividing plate be arranged in parallel;
In two pieces of adjacent described dividing plates, wherein one piece of described outer cover of heat exchanger inwall near described superheated steam import side is arranged, and there is space between this dividing plate and the described outer cover of heat exchanger inwall exporting side near described unsaturated water; Another block is arranged near the described outer cover of heat exchanger inwall of described unsaturated water outlet side, and there is space between the described outer cover of heat exchanger inwall of this dividing plate and close described superheated steam import side.
5. vapour vapour heat exchanger according to claim 2, is characterized in that, described outer cover of heat exchanger is cuboid or cylindrical-shaped structure;
Described exhaust steam pipeline is arranged along the length direction of described outer cover of heat exchanger; Described superheated steam import and the outlet of described unsaturated water lay respectively at the two ends of described outer cover of heat exchanger length direction, and lay respectively at the both sides of described outer cover of heat exchanger width.
6. vapour vapour heat exchanger according to claim 2, is characterized in that, described outer cover of heat exchanger is cuboid or cylindrical-shaped structure;
Described exhaust steam pipeline is arranged along the width of described outer cover of heat exchanger; Described superheated steam import and the outlet of described unsaturated water lay respectively at the two ends of described outer cover of heat exchanger length direction, and lay respectively at the both sides of described outer cover of heat exchanger length direction.
7. the vapour vapour heat exchanger according to claim 5 or 6, it is characterized in that, described outer cover of heat exchanger is cylindrical-shaped structure, the plate-like structure of described dividing plate semicircular in shape.
8., according to the arbitrary described vapour vapour heat exchanger of claim 1-5, it is characterized in that, the two ends of described exhaust steam pipeline are all positioned at the outside of described outer cover of heat exchanger; And/or
The quantity of described exhaust steam pipeline is at least two, and each described exhaust steam pipeline is arranged in parallel.
9. vapour vapour heat exchanger according to claim 8, is characterized in that, each described exhaust steam pipeline is straight tube structure.
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| CN201410381709.0A CN105333752A (en) | 2014-08-06 | 2014-08-06 | Steam-steam heat exchanger |
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| CN201410381709.0A CN105333752A (en) | 2014-08-06 | 2014-08-06 | Steam-steam heat exchanger |
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| CN105333752A true CN105333752A (en) | 2016-02-17 |
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Application publication date: 20160217 |