CA1271376A - Spiral to vertical furnace tube transition - Google Patents
Spiral to vertical furnace tube transitionInfo
- Publication number
- CA1271376A CA1271376A CA000498914A CA498914A CA1271376A CA 1271376 A CA1271376 A CA 1271376A CA 000498914 A CA000498914 A CA 000498914A CA 498914 A CA498914 A CA 498914A CA 1271376 A CA1271376 A CA 1271376A
- Authority
- CA
- Canada
- Prior art keywords
- furnace
- tubes
- vertical
- tube wall
- section
- Prior art date
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B29/00—Steam boilers of forced-flow type
- F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
- F22B29/061—Construction of tube walls
- F22B29/065—Construction of tube walls involving upper vertically disposed water tubes and lower horizontally- or helically disposed water tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/62—Component parts or details of steam boilers specially adapted for steam boilers of forced-flow type
- F22B37/64—Mounting of, or supporting arrangements for, tube units
- F22B37/645—Mounting of, or supporting arrangements for, tube units involving upper vertically-disposed water tubes and lower horizontally- or helically disposed water tubes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Gasification And Melting Of Waste (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Fiber Materials (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A furnace for a once-through steam generator comprising a lower section of inclined tubes and upper section of vertical tubes and a support system and tube arrangement at a transition zone intermediate the sections.
A furnace for a once-through steam generator comprising a lower section of inclined tubes and upper section of vertical tubes and a support system and tube arrangement at a transition zone intermediate the sections.
Description
CA~E~ 4636 SPIRAL TO ve CALr~uRNAc~ys~y2 BAS::KGROUND O~ THE INVE~NTION
Field of the Invention _ _ _ __ ~ is invention applies to furnace tube wall enclosures definin8 the 5 ~riphery of the furnace, the lower portion o~ th~ walls con~istlng of spiral-wound inclined tubes and the upper portlon con~istin6 of load-carryillg verticaltubes which support the lower portion and, more particularly, relates ~o the transition ~rom spiral to v~rtical circuitry. Hereinafter, "inclined tubes" willdefinc the spiral wound tu~es in the lower furnace and nvertical tubes" the 10 load-carrying vertical tubes in th~ upper portion oiE thc furnace. The inYention concept applies to subcritical or supercri~ical once-through steam generators having all-welded membrane furnace walls~
A major problem in th~ tesign of such units is in the support sys~em and in the tube arran~emen~ in the transition zone ~rom inclined to ~vertical tu~es.
15 The incllned tubes are sloped up ~o about 3a degrees from horizontal and ~piral up the ~urnaee makin8 several turns. The inclined tubes terminate in a header below the furnace arch for transition to ver~ical tubes in the upper portion of the furnace. Because a near-horizontally oriented tube c~n usually carry only a limited amount of static load in the vertical direction, the inclined tube portlon oE the furnace requires an external support system to -transfer load to the vertical tubes.
Description of_the Prlor Art Relevant prlor art lncludes Kolllng, U.S. Patent No. 3,027,882, which discloses vertical support bars connectlng inclined tubes to vertical tubes in a furnace, ~agley et al, U.S. Patent No. 3,400,689, which discloses vertical tension members connected at their lower ends to the furnace walls and supported by springs at their upper ends, and Gor~egno et al, U.S. Patent No. 4,116,168, which discloses inclin~d tubes in an intermediate furnace section connected by bifurcates to upper and lower vertical tube portions of the furnace.
SUMM~RY OF THE INVENTION
In a preferred embodiment the invention relates to a tube wall enclosure for the furnace of a once-through steam generator comprising a lower section ofi.ncline~ tubes fed in parallel from a ring header at the bottom of the furnace. The inclined tubes spiral upwards at an angle of up to about 30 degrees from horizontal, making at least one full turn around the furnace, and terminating in vertical manifold headers located at spaced distances around the furnace. The upper furnace section consists of load-carrying vertical tubes in fluid communication with the lower section at a transition zone. Vertical and inclined tubes are spaced from one another and weldably inter-connected by membranes forming a gas-tight enclosure. Vertical 3~
external su~pport straps are flush mounted and weldably attached to the tubes of the lower furnace sec-tion for transfer of static load to the tubes oE the upper furnace section. The tubes of the upper section overlap the tubes of the lower section to eliminate eccentric loading and to simplify the tube arran~ement at the transition zone.
In accordance with the present invention there is provided a furnace tube wall enclosure defining a furnace for a once-through steam generator comprising, a lower furnace section of inclined tubes which spiral upwards to a transition zone, an upper furnace section of load-carrying vertical tubes in fluid communication with the lower furnace section, vertical external support straps spaced transversely about the lower furnace section and weldably connected to the inclined tubes of the lower furnace for support thereof, means for transfer of the static load of the lower furnace section from the support straps to the vertical tubes of the upper furnace section, and the upper furnace section extending below the transition zone to overlap a portion of said lower furnace section.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better under-standing of the invention, its advantages and specific objectives obtained by its use, reference is directed to the accompanying drawings and descriptive matter in which a preferred embodiment of the invention is illustrated and explained.
BRIEF DFSCRIPTI_N OF THE DRAWINGS
Fig. 1 is a schematic sectional side view of a once-through steam generator having inclined and vertical furnace tube sections.
Fig. 2 is an isometric view of a portion of the inclined tube lower furnace walls showing an external support strap with extending bars.
Fig. 3A is a sectional view of the prior art support at the transition zone.
Fig. 3B is a sectional view of the support in accordance wi.th the invention.
_ 3a -~L~37i6 Fig. l i~ a view from the furnacc ~ido showina the prior art tube qrrnnaement and closure at the transition zone.
Fig. S is a view from th~ furnacc side showing the tub~ arrangement at th~ traniition zone in accordance with the invention.
Fig. 6 is a s~ctional plan view of Fig. 5.
Fig. 7 is a sectional view taken along the line 7-7 of Fig. 5.
Fig. 8 is an external view showing the support system in greater detqil.
Fig. 9 is a sectional elevation taken along the line 9-~ of Fig. 8.
DETAILED DESCRIPTION
Referring to Fig. I, a schematic sectional side view of a anc~through steam generator 10 is shown having a lower furnace section 12 of inclined tubes 13 which are membraned and spiral upwards to a transition zone 16 below the furnace qrch lû. From the transition zone 16, the inclined tubes 13 are in fluidcommunication with upper furnace section 14 composed of vertical membraned tubes 15 in panels for upward flow to outlet h,eaders 20. Inclined and vertical tubes 13 and 15 are shown in greater detail in subsequent drawings.
Figure 2 illustrates the method of support of inclined tubes 13 in the lower furnace section 12 and one of several support straps 22 with bars 24 which extend the full width of support strap 22 and weldably interconnect the
Field of the Invention _ _ _ __ ~ is invention applies to furnace tube wall enclosures definin8 the 5 ~riphery of the furnace, the lower portion o~ th~ walls con~istlng of spiral-wound inclined tubes and the upper portlon con~istin6 of load-carryillg verticaltubes which support the lower portion and, more particularly, relates ~o the transition ~rom spiral to v~rtical circuitry. Hereinafter, "inclined tubes" willdefinc the spiral wound tu~es in the lower furnace and nvertical tubes" the 10 load-carrying vertical tubes in th~ upper portion oiE thc furnace. The inYention concept applies to subcritical or supercri~ical once-through steam generators having all-welded membrane furnace walls~
A major problem in th~ tesign of such units is in the support sys~em and in the tube arran~emen~ in the transition zone ~rom inclined to ~vertical tu~es.
15 The incllned tubes are sloped up ~o about 3a degrees from horizontal and ~piral up the ~urnaee makin8 several turns. The inclined tubes terminate in a header below the furnace arch for transition to ver~ical tubes in the upper portion of the furnace. Because a near-horizontally oriented tube c~n usually carry only a limited amount of static load in the vertical direction, the inclined tube portlon oE the furnace requires an external support system to -transfer load to the vertical tubes.
Description of_the Prlor Art Relevant prlor art lncludes Kolllng, U.S. Patent No. 3,027,882, which discloses vertical support bars connectlng inclined tubes to vertical tubes in a furnace, ~agley et al, U.S. Patent No. 3,400,689, which discloses vertical tension members connected at their lower ends to the furnace walls and supported by springs at their upper ends, and Gor~egno et al, U.S. Patent No. 4,116,168, which discloses inclin~d tubes in an intermediate furnace section connected by bifurcates to upper and lower vertical tube portions of the furnace.
SUMM~RY OF THE INVENTION
In a preferred embodiment the invention relates to a tube wall enclosure for the furnace of a once-through steam generator comprising a lower section ofi.ncline~ tubes fed in parallel from a ring header at the bottom of the furnace. The inclined tubes spiral upwards at an angle of up to about 30 degrees from horizontal, making at least one full turn around the furnace, and terminating in vertical manifold headers located at spaced distances around the furnace. The upper furnace section consists of load-carrying vertical tubes in fluid communication with the lower section at a transition zone. Vertical and inclined tubes are spaced from one another and weldably inter-connected by membranes forming a gas-tight enclosure. Vertical 3~
external su~pport straps are flush mounted and weldably attached to the tubes of the lower furnace sec-tion for transfer of static load to the tubes oE the upper furnace section. The tubes of the upper section overlap the tubes of the lower section to eliminate eccentric loading and to simplify the tube arran~ement at the transition zone.
In accordance with the present invention there is provided a furnace tube wall enclosure defining a furnace for a once-through steam generator comprising, a lower furnace section of inclined tubes which spiral upwards to a transition zone, an upper furnace section of load-carrying vertical tubes in fluid communication with the lower furnace section, vertical external support straps spaced transversely about the lower furnace section and weldably connected to the inclined tubes of the lower furnace for support thereof, means for transfer of the static load of the lower furnace section from the support straps to the vertical tubes of the upper furnace section, and the upper furnace section extending below the transition zone to overlap a portion of said lower furnace section.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better under-standing of the invention, its advantages and specific objectives obtained by its use, reference is directed to the accompanying drawings and descriptive matter in which a preferred embodiment of the invention is illustrated and explained.
BRIEF DFSCRIPTI_N OF THE DRAWINGS
Fig. 1 is a schematic sectional side view of a once-through steam generator having inclined and vertical furnace tube sections.
Fig. 2 is an isometric view of a portion of the inclined tube lower furnace walls showing an external support strap with extending bars.
Fig. 3A is a sectional view of the prior art support at the transition zone.
Fig. 3B is a sectional view of the support in accordance wi.th the invention.
_ 3a -~L~37i6 Fig. l i~ a view from the furnacc ~ido showina the prior art tube qrrnnaement and closure at the transition zone.
Fig. S is a view from th~ furnacc side showing the tub~ arrangement at th~ traniition zone in accordance with the invention.
Fig. 6 is a s~ctional plan view of Fig. 5.
Fig. 7 is a sectional view taken along the line 7-7 of Fig. 5.
Fig. 8 is an external view showing the support system in greater detqil.
Fig. 9 is a sectional elevation taken along the line 9-~ of Fig. 8.
DETAILED DESCRIPTION
Referring to Fig. I, a schematic sectional side view of a anc~through steam generator 10 is shown having a lower furnace section 12 of inclined tubes 13 which are membraned and spiral upwards to a transition zone 16 below the furnace qrch lû. From the transition zone 16, the inclined tubes 13 are in fluidcommunication with upper furnace section 14 composed of vertical membraned tubes 15 in panels for upward flow to outlet h,eaders 20. Inclined and vertical tubes 13 and 15 are shown in greater detail in subsequent drawings.
Figure 2 illustrates the method of support of inclined tubes 13 in the lower furnace section 12 and one of several support straps 22 with bars 24 which extend the full width of support strap 22 and weldably interconnect the
2~ inclined tube membranes 26 w1th support strap 22. The support straps 22 are mounted flush with the outside surface of inclined tubes 13 and are spaced at suitable distGnces around the periphery of the lower furnace section 12 to accommodate the static load of the inclined tubes 13 and for transfer of load to :
~1.2:~`3~
vertical tubes 15 in upper furnace section 14. The upp~r ends (shown in Figs. 5 and 8) of support straps 22 are flared to a gre~ter width for transfer of load to a gre~ter number of vertical tubes IS qs will be later described.
Fig. 3A shows an existing design of the transition zone and the load 5 transfer from support straps 22 to vertical tubes 15 by means of finger plates3û. As indicated, the longitudinal centerlines of vertical tubes 15 are in line with the centerlines of inclined tubes 13. Since the static load of lower furnace section 12 is carried by support straps 22, a turning moment is produced due to eccentricity. To eliminate this moment, a complex, expensive pinned linkage 10 system 28 is employed between support straps 22 and vertical buckstays 32.
Aiso shown are the inclined and vertical tube membranes 26 and 27, respectively, and bars 24 interconnecting the membranes 26 with support strap 22.
The improved design is shown in Fig. 3B. Vertical tubes 15 are located to 15 overlap the inclined tubes 13. The longitudinal centerlines of vertical tubes 15 are approximately in line with the centerlines of the support straps 22 thereby eliminating the moment due to eccentric loading while also eliminating the vertical buckstays 32 and linkage system 28 associated with the prior art designshown in Fig. 3A~ A seal 34 between the uppermost tubes 13 and vertical tube 20 membranes 27 insures the gas tight integrity of the furnace enclosure. Other advantages of this improved design will be apparent as described in subsequent drawings. Aiso shown is one of the finger plates 3û and the inclined tube membranes 26.
Fig. 4 is a view from the furnace side showing the closure at the 25 transition zone of the existing design. Inclined tubes 13 leave the furnace at the sarne horizontal plane and terminate in a horizontal outlet header, not
~1.2:~`3~
vertical tubes 15 in upper furnace section 14. The upp~r ends (shown in Figs. 5 and 8) of support straps 22 are flared to a gre~ter width for transfer of load to a gre~ter number of vertical tubes IS qs will be later described.
Fig. 3A shows an existing design of the transition zone and the load 5 transfer from support straps 22 to vertical tubes 15 by means of finger plates3û. As indicated, the longitudinal centerlines of vertical tubes 15 are in line with the centerlines of inclined tubes 13. Since the static load of lower furnace section 12 is carried by support straps 22, a turning moment is produced due to eccentricity. To eliminate this moment, a complex, expensive pinned linkage 10 system 28 is employed between support straps 22 and vertical buckstays 32.
Aiso shown are the inclined and vertical tube membranes 26 and 27, respectively, and bars 24 interconnecting the membranes 26 with support strap 22.
The improved design is shown in Fig. 3B. Vertical tubes 15 are located to 15 overlap the inclined tubes 13. The longitudinal centerlines of vertical tubes 15 are approximately in line with the centerlines of the support straps 22 thereby eliminating the moment due to eccentric loading while also eliminating the vertical buckstays 32 and linkage system 28 associated with the prior art designshown in Fig. 3A~ A seal 34 between the uppermost tubes 13 and vertical tube 20 membranes 27 insures the gas tight integrity of the furnace enclosure. Other advantages of this improved design will be apparent as described in subsequent drawings. Aiso shown is one of the finger plates 3û and the inclined tube membranes 26.
Fig. 4 is a view from the furnace side showing the closure at the 25 transition zone of the existing design. Inclined tubes 13 leave the furnace at the sarne horizontal plane and terminate in a horizontal outlet header, not
3~6 shown, exterior to the furnace enclosure. Since the longitudinal centerlines of vertical tubes 15 are in line with the inclined tube centerlines, vertical tubes 15 leave the furnace at varying elevations, following the slope of inclined tubes 13.
Accordingly, vertical tube membranes 27 also terminate at varying elevations.
5 To provide a gas-tight furnace, closure plates 36 of various shapes are required to seal the areas between vertical membrane terminations and the uppermost inclined tubes 13. As is evident from Fig. 4 this is an expensive design requiring much hand fitting and welding in the field during erection. In additin, vertical tubes 15 require individual hand bending because of the vary;ng elevations 10 where they leave the furnace and terminate in an external header, not shown.
In contrast, Figs. 5, 6, and 7 illustrate in detail the new design and its advantages. In the embodiment shown, inclined tubes 13 leave the furnace in vertical groups of five, although a greater or lesser number of tubes 13 may be grouped. The groups penetrate to outside the furnace through spaces between 15 vertical tubes 15 and terminate in outlet vertical manifolds 38 spaced at suitable distances ~round the furnace. h~anifolds 38 are connected to horizontalinlet headers 40 for fluid flow communicqtion. Flow is then upward in vertical tubes 15 to outlet headers 20 (shown in Fig. 1). Vertical tubes 15 overlap inclined tubes 13 and bend outwardly in a horizontal plane below the inclined 20 tube exit groups, terminating in horizontal headers 40. Expensive closure plates are eliminated and field hand welding is reduced. Vertical tubes 15 are machine pack-bent in panels eliminating individual hand bending of previous designs.
Also shown are finger plates 30 and support straps 22.
Figs. 8 and 9 are similar to Figs. S and 7 but are viewed from outside the 25 furnace. Shown is the flared end of one support strap 22 having ten vertical ~` ~L~7~
finger plates 30 welded thereto and the upper ends of the finger plates welded to adjclcent pairs of vertical tubes 15 for load transference. A greater or lesser number of finger plates 30 muy be employed, depending on the magnitude of the static load of lower furnace section 12 and the width of the flared upper ends of 5 support straps 22. Also shown are inclined tubes 13, inclined and vertical tube membranes 26 and 27, respectively.
The foregoing description has been directed to a particular preferred embodiment of the present invention for purposes of explanation and illustration. It ~hould be recognized, however, by those skilled in the art that10 modifications and changes in the invention may be made without departing fromthe scope and spirit of the invention. It is thereFore intended that the following claims cover all equivalent modifications and variations as fall within the scope of the invention as defined by the claims.
Accordingly, vertical tube membranes 27 also terminate at varying elevations.
5 To provide a gas-tight furnace, closure plates 36 of various shapes are required to seal the areas between vertical membrane terminations and the uppermost inclined tubes 13. As is evident from Fig. 4 this is an expensive design requiring much hand fitting and welding in the field during erection. In additin, vertical tubes 15 require individual hand bending because of the vary;ng elevations 10 where they leave the furnace and terminate in an external header, not shown.
In contrast, Figs. 5, 6, and 7 illustrate in detail the new design and its advantages. In the embodiment shown, inclined tubes 13 leave the furnace in vertical groups of five, although a greater or lesser number of tubes 13 may be grouped. The groups penetrate to outside the furnace through spaces between 15 vertical tubes 15 and terminate in outlet vertical manifolds 38 spaced at suitable distances ~round the furnace. h~anifolds 38 are connected to horizontalinlet headers 40 for fluid flow communicqtion. Flow is then upward in vertical tubes 15 to outlet headers 20 (shown in Fig. 1). Vertical tubes 15 overlap inclined tubes 13 and bend outwardly in a horizontal plane below the inclined 20 tube exit groups, terminating in horizontal headers 40. Expensive closure plates are eliminated and field hand welding is reduced. Vertical tubes 15 are machine pack-bent in panels eliminating individual hand bending of previous designs.
Also shown are finger plates 30 and support straps 22.
Figs. 8 and 9 are similar to Figs. S and 7 but are viewed from outside the 25 furnace. Shown is the flared end of one support strap 22 having ten vertical ~` ~L~7~
finger plates 30 welded thereto and the upper ends of the finger plates welded to adjclcent pairs of vertical tubes 15 for load transference. A greater or lesser number of finger plates 30 muy be employed, depending on the magnitude of the static load of lower furnace section 12 and the width of the flared upper ends of 5 support straps 22. Also shown are inclined tubes 13, inclined and vertical tube membranes 26 and 27, respectively.
The foregoing description has been directed to a particular preferred embodiment of the present invention for purposes of explanation and illustration. It ~hould be recognized, however, by those skilled in the art that10 modifications and changes in the invention may be made without departing fromthe scope and spirit of the invention. It is thereFore intended that the following claims cover all equivalent modifications and variations as fall within the scope of the invention as defined by the claims.
Claims (10)
1. A furnace tube wall enclosure defining a furnace for a once-through steam generator comprising, a lower furnace section of inclined tubes which spiral upwards to the transition zone, an upper furnace section of load-carryingvertical tubes in fluid communication with the lower furnace section, vertical external support straps spaced transversely about the lower furnace section and weldably connected to the inclined tubes of the lower furnace for support thereof, means for transfer of the static load of the lower furnace section fromthe support straps to the vertical tubes of the upper furnace section, and the upper furnace section extending below the transition zone to overlap a portion of said lower furnace section.
2. The furnace tube wall enclosure of claim 1 wherein the support straps are mounted flush with the outside surface of the inclined tubes with bars weldably interconnecting the inclined tubes to the support straps.
3. The furnace tube wall enclosure of claim 2 wherein the upper ends of the support straps are flared to a greater width.
4. The furnace tube wall enclosure of claim 1 in which the load transfer means includes a multiplicity of vertical finger plates having their lower ends welded to the flared ends of the support straps and their upper ends welded to adjacent pairs of vertical tubes.
5. The furnace tube enclosure of claim 1 wherein the longitudinal centerlines of the vertical tubes are approximately in line with the centerlinesof the support straps.
6. The furnace tube wall enclosure of claim 1 in which the inclined tubes which spiral upwards make at least one complete turn around the periphery of the furnace.
7. The furnace tube wall enclosure of claim 1 wherein the inclined tubes leave the furnace at the transition zone in vertical groups through spacesbetween vertical tubes and terminate in vertical manifolds spaced around the furnace.
8. The furnace tube wall enclosure of claim 1 wherein the vertical tubes bend outwardly at the transition zone in a horizontal plane below the inclined tube exit groups and terminate in horizontal headers in flow communication with the vertical manifolds.
9. The furnace tube wall enclosure of claim 1 wherein the tubes in both the lower and upper furnace sections are interconnected by membranes welded to adjacent tubes to form a gas-tight structure.
10. The furnace tube wall enclosure of claim 1 wherein the tubes of the lower section spiral upwards at an angle up to about 30 degrees from horizontal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68894585A | 1985-01-04 | 1985-01-04 | |
| US688,945 | 1985-01-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1271376A true CA1271376A (en) | 1990-07-10 |
Family
ID=24766441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000498914A Expired - Fee Related CA1271376A (en) | 1985-01-04 | 1986-01-03 | Spiral to vertical furnace tube transition |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0187542A3 (en) |
| JP (1) | JPS61211606A (en) |
| CN (1) | CN1012448B (en) |
| CA (1) | CA1271376A (en) |
| ES (1) | ES8702627A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59308581D1 (en) * | 1993-04-21 | 1998-06-25 | Asea Brown Boveri | Steam generator combustor and method of making the same |
| DE102006005208A1 (en) | 2006-02-02 | 2007-08-16 | Hitachi Power Europe Gmbh | Hanging steam generator |
| CN201344517Y (en) * | 2009-01-12 | 2009-11-11 | 上海锅炉厂有限公司 | A helical water-cooled wall power transmitting sling device |
| DE102010038885B4 (en) * | 2010-08-04 | 2017-01-19 | Siemens Aktiengesellschaft | Once-through steam generator |
| CN114933912B (en) * | 2022-06-24 | 2024-07-09 | 山东天景工程设计有限公司 | Device for reducing bias flow in coke oven raw gas waste heat utilization heat exchanger |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1401371B2 (en) * | 1961-11-02 | 1970-02-19 | Siemens AG, 1000 Berlin u. 8000 München | Continuous boiler with overpressure firing |
| GB1405752A (en) * | 1971-08-05 | 1975-09-10 | Babcock & Wilcox Ltd | Tubulous vapour generating units |
| DE2621189C3 (en) * | 1976-05-13 | 1980-02-21 | Balcke-Duerr Ag, 4030 Ratingen | Device for suspending a pipe wall |
| CH634905A5 (en) * | 1978-12-20 | 1983-02-28 | Sulzer Ag | STEAM GENERATOR WALL. |
-
1985
- 1985-12-25 JP JP29093585A patent/JPS61211606A/en active Granted
- 1985-12-30 EP EP85309545A patent/EP0187542A3/en not_active Withdrawn
-
1986
- 1986-01-03 ES ES550653A patent/ES8702627A1/en not_active Expired
- 1986-01-03 CA CA000498914A patent/CA1271376A/en not_active Expired - Fee Related
- 1986-01-03 CN CN 86100007 patent/CN1012448B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0187542A3 (en) | 1987-09-02 |
| CN86100007A (en) | 1986-10-01 |
| ES8702627A1 (en) | 1987-01-01 |
| ES550653A0 (en) | 1987-01-01 |
| JPH0343521B2 (en) | 1991-07-02 |
| CN1012448B (en) | 1991-04-24 |
| EP0187542A2 (en) | 1986-07-16 |
| JPS61211606A (en) | 1986-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |