CN106257137A - A kind of steam generator with axial preheater - Google Patents
A kind of steam generator with axial preheater Download PDFInfo
- Publication number
- CN106257137A CN106257137A CN201610810059.6A CN201610810059A CN106257137A CN 106257137 A CN106257137 A CN 106257137A CN 201610810059 A CN201610810059 A CN 201610810059A CN 106257137 A CN106257137 A CN 106257137A
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- Prior art keywords
- cold
- secondary side
- heat exchanger
- branch road
- steam generator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
nullThe invention discloses a kind of steam generator with axial preheater，Including housing，The lower end of housing is provided with tube sheet，Heat exchanger tube it is provided with on tube sheet，Heat exchanger tube one end connects with primary side entrance，The other end and primary side outlet，On tube sheet, the outside at heat exchanger tube is equipped with a shroud，Division board it is provided with on tube sheet，Described division board is separated into cold branch road and hot branch road by inside a shroud，On tube sheet, the outside at cold branch road is provided with secondary coaming plate，The bottom of shroud is provided with through hole in the both sides of division board，The top of housing is provided with moist steam outlet，The secondary side hot-side inlet and secondary side cold-side inlet being connected with moist steam outlet it is provided with on housing，Secondary side hot-side inlet coordinates with hot branch road，Secondary side cold-side inlet coordinates with cold branch road，The admission port coordinated with secondary side cold-side inlet it is provided with on described housing.The present invention solves the problem that existing equivalent steam generator causes the pre-heat effect difference of medium in pressure vessel.
Description
Technical field
The present invention relates to heat transfer enhancement technology field, be specifically related to a kind of steam generator with axial preheater.
Background technology
The principle of equivalent steam generator (SG) is: enters the feedwater of SG and is positioned at the separator above to water ring with dry
The recirculation aqueous phase mixing of device, subsequently, between mixing water feed pressure coaming plate and bundle wrapper, until tube sheet；The most this mixed
Heshui flows simultaneously into heat road surface and the tube bank on cold road surface with the sector at 360 ° of angles.
Existing equivalent steam generator (SG) causes the pre-heat effect of medium in pressure vessel poor.
Summary of the invention
It is an object of the invention to provide a kind of steam generator with axial preheater, solve existing equivalent steam and send out
Raw device causes the problem of the pre-heat effect difference of medium in pressure vessel.
The present invention is achieved through the following technical solutions:
A kind of steam generator with axial preheater, including housing, the lower end of housing is provided with tube sheet, tube sheet is provided with and changes
Heat pipe, heat exchanger tube one end connects with primary side entrance, and the other end and primary side outlet, on described tube sheet outside heat exchanger tube
Side ring is provided with a shroud, and described tube sheet is provided with division board, and described division board is separated into cold branch road inside a shroud
With hot branch road, on described tube sheet, the outside at cold branch road is provided with secondary coaming plate, and the bottom of a described shroud is at division board
Both sides are provided with through hole, and the top of described housing is provided with moist steam outlet, described housing is provided with and exports with moist steam
The secondary side hot-side inlet connected and secondary side cold-side inlet, described secondary side hot-side inlet coordinates with hot branch road, described secondary
Side cold-side inlet coordinates with cold branch road, and described housing is provided with the admission port coordinated with secondary side cold-side inlet.
Equivalent steam generator (SG), while producing available steam, produces moist steam, is formed after wet steaming condensation
Saturation water again reflux utilization formed recirculation water, recirculation water with feedwater mix after between feed pressure coaming plate and bundle wrapper,
Until tube sheet；Owing to, in existing equivalent steam generator (SG), the difference not according to heat exchanger tube both sides temperature carries out district
Point, so recirculated water and feedwater mixing after all with equivalent steam generator (SG) inside water mix, such one cause by
The temperature of the aqueous medium that original temperature is higher reduces, and then causes pre-heat effect poor, and steam produces the slowest.
Housing of the present invention specifically refers to a kind of pressure volume pot, and described heat exchanger tube specifically refers to a kind of hot fluid circulation
Pipeline, its one end connected with primary side entrance is passed through hot fluid, and hot fluid transfers heat in housing in housing
After aqueous medium, primary side outlet, by entering heat exchanger tube after discharging heating, a described shroud specifically refers to heat exchanger tube and water
The structure that medium separates, is provided with through hole, and described through hole is used for making the aqueous medium outside a shroud enter into inside it,
The setting of secondary shroud is it can be avoided that recirculation water is drunk gives back to directly contact with heat exchanger tube；The bottom of described division board is connected with tube sheet
The inner side of 2 symmetrical sidewalls and a shroud connects, and described hot branch road specifically refers to heat exchanger tube and enters one end of hot fluid
Peripheral region；Described cold branch road specifically refers to the peripheral region, one end that heat exchanger tube hot fluid flows out；Described secondary coaming plate is specifically
Referring to the structure of a kind of semicircle arcuation, its effect is to be formed to import between the shroud of side to follow from what secondary side cold-side inlet entered again
Ring water and the passage of feedwater, form the recirculation water imported from the entrance of secondary side hot-side inlet between housing and side shroud and lead to
Road, and then avoid the recirculation water entered from secondary side cold-side inlet and feedwater and the recirculation entered from secondary side hot-side inlet
Water mixes in housing；Described primary side entrance specifically refers to hot fluid and enters the structure of heat exchanger tube, described primary side outlet tool
Body refers to that hot fluid flows out the structure of heat exchanger tube；Described secondary side cold-side inlet specifically refers to relatively low the flowing at recirculated water of temperature
Structure in housing, described secondary side hot-side inlet specifically refers to the structure in recirculated water flows into housing that temperature is higher；For
Make the best results of steam generator, only mix with to aqueous phase with a small amount of recirculation water；Remaining recirculation water flows directly into and returns
Backheat branch road；Described secondary side cold-side inlet and secondary side hot-side inlet are preferably provided at the position coordinated with heat exchanger tube top.
The present invention is by arranging a shroud, secondary coaming plate and the division board cooperated, at a shroud in housing
The hot branch road of interior formation and cold branch road, by arranging secondary side cold-side inlet and secondary side hot-side inlet, will export out from moist steam
The recirculation moisture come becomes the heat part and cold part that temperature is higher, and heat part is entered into hot branch road by secondary side hot-side inlet,
Cold part is entered into cold branch road, such structure by secondary side cold-side inlet, it is possible to make full use of the waste heat of recirculation water, and temperature is relatively
High recirculation water can quickly evaporate generation steam at hot branch road, improves pre-heat effect.
Present invention is mainly applied in aqueous medium, steam medium and fluid media (medium), running parameter be primary side pressure be 0.1
～15.0MPa, temperature is 5～342 DEG C；Secondary pressure is 0.1～10.0MPa, temperature 5～311 DEG C；The present invention is without motion portion
Part, has the spies such as simple in construction, quality be little, low cost, wear-resisting, corrosion-resistant, structure member is easily changed, adaptation parameter scope is wide
Point.
The mounting condition of the present invention: the steam generator of the axial preheater of whole band is arranged on a ring support, with
Loop is easy to connect, it is simple to testing crew operates；Primary side and the secondary side of the steam generator with axial preheater all use
Groove falcon Flange joint, easy accessibility.The present invention has easy accessibility, uses flexibly, can sustain wider pressure and temperature model
Enclose, and there is simple in construction, robust feature.
Application: can apply in carrying axial preheater SG correlation test, and also can in conventional SG test
Application.
Further, the present invention has redesigned a kind of with axial steam generator, eliminates the original soda pop of SG analogue body
Separator and exsiccator, thus the height reduction at least 40% of SG analogue body, volume-diminished at least 50%.
The present invention is not only simple in structure, parts are few, light weight, dependable performance, repair and maintenance convenient, can apply to tape spool
To the various tests of preheater SG, moreover it is possible to carrying out various SG augmentation of heat transfer contrast test after simple reformation.
Further, the quantity of heat exchanger tube reduces ratio-dependent according to thermal load test scale and heat exchange area, at least sets
It is equipped with 2, is connected by dividing plate between adjacent heat exchange tubes.
So may insure that the effectiveness of steam generator test simulation.
Further, heat exchanger tube is U-tube.
Further, the height of a shroud is higher than the height of heat exchanger tube.
So structure makes cold and hot will not mix in advance at recirculated water, thereby further ensures that mould tested by steam generator
The effectiveness intended.
Further, secondary side hot-side inlet is pipe, and described secondary side cold-side inlet is made up of some drain pipies, described
Drain pipe through be arranged at admission port to water ring.
Recirculation water flows through each drain pipe, and feedwater is discharged by through hole on water ring, due to drain pipe and leading on water ring
Span is arranged so that have uniform temperature more uniform with feedwater distribution at recirculation water.
Further, drain pipe is J-shaped pipe, the inlet side that bending section is recirculation water of described J-shaped pipe.
Described J-shaped pipe specifically arranges the shape of draining like J-shaped, is flowed to straight sections at recirculated water by the bending section of J-shaped pipe.
Further, the moist steam of moist steam outlet is divided into two parts by canned motor pump, is partly into secondary side hot junction
Entrance, another part enters secondary side cold-side inlet.
Specifically refer to arrange at secondary side hot-side inlet the canned motor pump of a higher moist steam of use temperature, two
Secondary side cold-side inlet arranges the canned motor pump of a relatively low moist steam of use temperature.
Described canned motor pump is prior art, is the circulating pump that the fluid circulation of different temperatures can be driven to get up.Further
Ground, the lower end of tube sheet is provided with the surge tank coordinated with heat exchanger tube, and surge tank is internal by gear
Plate is divided into two parts, and a part connects with primary side entrance, another part and primary side outlet.
Before hot fluid enters heat exchanger tube, buffer in entering into surge tank, be conducive to protection heat exchanger tube huge
Compression shock under impaired.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the present invention is by arranging a shroud, secondary coaming plate and the division board cooperated, in a shroud in housing
Form hot branch road and cold branch road, by arranging secondary side cold-side inlet and secondary side hot-side inlet, will export out from moist steam
Recirculation moisture become temperature higher heat part and cold part, heat part entered into hot branch road by secondary side hot-side inlet, cold
Part is entered into cold branch road, such structure by secondary side cold-side inlet, it is possible to making full use of the waste heat of recirculation water, temperature is higher
Recirculation water can quickly evaporate generation steam at hot branch road, improve pre-heat effect.
2, the present invention has redesigned a kind of with axial steam generator, eliminates the original steam-water separation of SG analogue body
Device and exsiccator, thus the height reduction at least 40% of SG analogue body, volume-diminished at least 50%.
3, the present invention has redesigned the height of a shroud, makes cold and hot will not mix in advance at recirculated water, thus
Further ensure that the effectiveness of steam generator test simulation.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation one of the steam generator with axial preheater；
Fig. 2 is the steam flow schematic diagram in the steam generator with axial preheater；
Fig. 3 be in the steam generator with axial preheater hot fluid flow to schematic diagram；
Fig. 4 is steam generator with axial preheater at housing sectional view radially；
Fig. 5 is to the structural representation of water ring Yu drain pipe；
Fig. 6 is the structural representation of embodiment 6.
The parts title of labelling and correspondence in accompanying drawing:
1-housing, shroud of 2-, bis-coaming plates of 3-, 4-tube sheet, 5-heat exchanger tube, 6-division board, 7-surge tank, 8-baffle plate, 9-
Drain pipe, 10-dividing plate, 11-moist steam exports, 12-primary side entrance, and 13-primary side exports, 14-secondary side hot-side inlet,
15-secondary side cold-side inlet, 16-to water ring, the hot branch road of 17-, the cold branch road of 18-.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1:
As shown in Figures 1 to 4, a kind of steam generator with axial preheater, including housing 1, the lower end of housing 1 is provided with pipe
Plate 4, tube sheet 4 is provided with heat exchanger tube 5, and heat exchanger tube 5 one end connects with primary side entrance 12, and the other end is with primary side outlet 13 even
Logical, described tube sheet 4 is equipped with in the outside of heat exchanger tube 5 shroud 2, described tube sheet 4 is provided with division board 6, described every
From plate 6, shroud 2 inside is separated into cold branch road 18 and hot branch road 17, described tube sheet 4 is arranged in the outside of cold branch road 18
Having secondary coaming plate 3, the bottom of a described shroud 2 is provided with through hole in the both sides of division board 6, and the top of described housing 1 sets
It is equipped with moist steam outlet 11, described housing 1 is provided with the secondary side hot-side inlet 14 and secondary being connected with moist steam outlet 11
Side cold-side inlet 15, described secondary side hot-side inlet 14 coordinates with hot branch road 17, described secondary side cold-side inlet 15 and cold branch road
18 coordinate, and described housing 1 is provided with the admission port coordinated with secondary side cold-side inlet 15；Described heat exchanger tube 5 is detachable to be set
Putting on tube sheet 4, the quantity of described heat exchanger tube 5 reduces ratio-dependent, heat exchanger tube 5 according to thermal load test scale and heat exchange area
Number can be 1, it is also possible to be N number of, N >=2, connected by dividing plate 10 between adjacent heat exchange tubes 5；Described heat exchanger tube 5 is preferred
For U-tube；The moist steam of described moist steam outlet 11 is divided into two parts by canned motor pump, is partly into secondary side hot-side inlet
14, another part enters secondary side cold-side inlet 15；In the present embodiment, the number of heat exchanger tube 5 is set to 5.
In the present embodiment, high-temperature, high pressure fluid flows into heat exchanger tube 5 from primary side entrance 12, from primary side outlet 13 outflow
Heat exchanger tube 5, thus provide thermal source for the aqueous medium in housing 1.When the aqueous medium in housing 1 is heated to predetermined operating mode, from
Moist steam outlet 11 discharge moist steams be divided into two parts according to predetermined operating mode: a part of saturation water by canned motor pump drive from
Secondary side hot-side inlet 14 flows in housing 1, continues heated in then entering into hot branch road 17 by through hole on a shroud 2
Evaporation, another part subcooled water by canned motor pump drive from secondary side cold-side inlet 15 flow into together with feedwater secondary coaming plate 3 with
In the annular space formed between shroud 2, in then entering into cold branch road 18 by through hole on a shroud 2, continue heated steaming
Send out；Such that it is able to realize predetermined secondary side to flow into different temperatures and the distribution function of different flow of fluid in housing 1, at this
On the basis of can carry out band axial preheater SG associated analog test.
Embodiment 2:
As it is shown in figure 1, the present embodiment is based on embodiment 1, the height of a described shroud 2 is higher than the height of heat exchanger tube 5；In this reality
Executing in example, the number of heat exchanger tube 5 is set to 8.
Embodiment 3:
As shown in Figure 1, shown in Figure 5, the present embodiment is based on embodiment 1, and described secondary side hot-side inlet 14 is pipe, and described secondary side is cold
End entrance 15 is made up of some drain pipies 9, described drain pipe 9 through be arranged at admission port to water ring 16；Described drain pipe 9
For J-shaped pipe, the inlet side that bending section is recirculation water of described J-shaped pipe；In the present embodiment, the number of heat exchanger tube 5 is set to 10
Individual.
Embodiment 4:
As it is shown in figure 1, the present embodiment is provided with, based on embodiment 1, the lower end of described tube sheet 4, the surge tank coordinated with heat exchanger tube 5
7, surge tank 7 is internal is divided into two parts by baffle plate 8, and a part connects with primary side entrance 12, and another part goes out with primary side
Mouth 13 connection.
Embodiment 5:
As shown in Figure 6, the present embodiment is with the difference of embodiment 1, and a described shroud 2, division board 6 and secondary coaming plate 3 can
Dismountable is arranged on tube sheet 4.In the present embodiment, remove time shroud 2, division board 6 and secondary coaming plate 3, i.e. become without axially
The test simulation body of preheater, high-temperature, high pressure fluid flows into heat exchanger tube 5 from primary side entrance 12, changes from primary side outlet 13 outflow
Heat pipe 5, thus provide thermal source for the aqueous medium in housing 1.When the aqueous medium in housing 1 is heated to predetermined operating mode, from wet
The moist steam that steam (vapor) outlet 11 is discharged is divided into two parts according to predetermined operating mode: a part of saturation water is driven from two by canned motor pump
Secondary side hot-side inlet 14 flows in housing 1, another part subcooled water by canned motor pump drive from secondary side cold-side inlet 15 with give
Water flows in housing 1 together, such that it is able to realize the feeding water function of standard SG, can carry out on this basis without axially preheating
Device SG associated analog is tested.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (8)
1. the steam generator with axial preheater, it is characterised in that include that housing (1), the lower end of housing (1) are provided with
Tube sheet (4), tube sheet (4) is provided with heat exchanger tube (5), and heat exchanger tube (5) one end connects with primary side entrance (12), the other end and one
Secondary side outlet (13) connects, and on described tube sheet (4), the outside at heat exchanger tube (5) is equipped with a shroud (2), described tube sheet (4)
On be provided with division board (6), described division board (6) is separated into cold branch road (18) and hot branch road (17) by internal for shroud (2),
On described tube sheet (4), the outside at cold branch road (18) is provided with secondary coaming plate (3), and the bottom of a described shroud (2) is in isolation
The both sides of plate (6) are provided with through hole, and the top of described housing (1) is provided with moist steam outlet (11), and described housing sets on (1)
It is equipped with the secondary side hot-side inlet (14) and secondary side cold-side inlet (15) being connected with moist steam outlet (11), described secondary side heat
End entrance (14) coordinates with hot branch road (17), and described secondary side cold-side inlet (15) coordinates with cold branch road (18), described housing (1)
On be provided with the admission port coordinated with secondary side cold-side inlet (15).
A kind of steam generator with axial preheater the most according to claim 1, it is characterised in that described heat exchanger tube
(5) quantity reduces ratio-dependent according to thermal load test scale and heat exchange area, at least provided with 2, and adjacent heat exchange tubes (5)
Between by dividing plate (10) connect.
A kind of steam generator with axial preheater the most according to claim 1, it is characterised in that described heat exchanger tube
(5) it is U-tube.
A kind of steam generator with axial preheater the most according to claim 1, it is characterised in that a described shroud
(2) height is higher than the height of heat exchanger tube (5).
A kind of steam generator with axial preheater the most according to claim 1, it is characterised in that described secondary side heat
End entrance (14) is pipe, and described secondary side cold-side inlet (15) is made up of some drain pipies (9), and described drain pipe (9) passes
Be arranged at admission port to water ring (16).
A kind of steam generator with axial preheater the most according to claim 5, it is characterised in that described drain pipe
(9) it is J-shaped pipe, the inlet side that bending section is recirculation water of described J-shaped pipe.
A kind of steam generator with axial preheater the most according to claim 1, it is characterised in that described moist steam goes out
The moist steam of mouth (11) is divided into two parts by canned motor pump, is partly into secondary side hot-side inlet (14), and another part enters
Secondary side cold-side inlet (15).
A kind of steam generator with axial preheater the most according to claim 1, it is characterised in that described tube sheet (4)
Lower end be provided with the surge tank (7) coordinated with heat exchanger tube (5), surge tank (7) is internal is divided into two parts by baffle plate (8), one
Part connects with primary side entrance (12), and another part connects with primary side outlet (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610810059.6A CN106257137A (en) | 2016-09-08 | 2016-09-08 | A kind of steam generator with axial preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610810059.6A CN106257137A (en) | 2016-09-08 | 2016-09-08 | A kind of steam generator with axial preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106257137A true CN106257137A (en) | 2016-12-28 |
Family
ID=57713821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610810059.6A Pending CN106257137A (en) | 2016-09-08 | 2016-09-08 | A kind of steam generator with axial preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106257137A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578915A (en) * | 2019-09-11 | 2019-12-17 | 常州大学 | Steam generator with preheater and superheater |
| CN112798309A (en) * | 2020-12-30 | 2021-05-14 | 西安交通大学 | Steam generator test device and method simulating presence or absence of axial flow type preheater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6173680B1 (en) * | 1998-05-04 | 2001-01-16 | Framatome | Steam generator comprising an improved feedwater supply device |
| CN201462796U (en) * | 2009-07-31 | 2010-05-12 | 华北电力大学 | Secondary side water supply device of steam generator |
| US20120247404A1 (en) * | 2011-04-04 | 2012-10-04 | Mitsubishi Heavy Industries, Ltd. | Steam generator |
| CN104395672A (en) * | 2012-07-10 | 2015-03-04 | 西屋电气有限责任公司 | Axial flow steam generator feedwater dispersion apparatus |
-
2016
- 2016-09-08 CN CN201610810059.6A patent/CN106257137A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6173680B1 (en) * | 1998-05-04 | 2001-01-16 | Framatome | Steam generator comprising an improved feedwater supply device |
| CN201462796U (en) * | 2009-07-31 | 2010-05-12 | 华北电力大学 | Secondary side water supply device of steam generator |
| US20120247404A1 (en) * | 2011-04-04 | 2012-10-04 | Mitsubishi Heavy Industries, Ltd. | Steam generator |
| CN104395672A (en) * | 2012-07-10 | 2015-03-04 | 西屋电气有限责任公司 | Axial flow steam generator feedwater dispersion apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 杨钊，黄伟，周捷: "带轴流式预热器蒸汽发生器的稳态热工水力特性研究", 《世界科技研究与发展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578915A (en) * | 2019-09-11 | 2019-12-17 | 常州大学 | Steam generator with preheater and superheater |
| CN112798309A (en) * | 2020-12-30 | 2021-05-14 | 西安交通大学 | Steam generator test device and method simulating presence or absence of axial flow type preheater |
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Application publication date: 20161228 |
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