US3063430A - Steam generating element for unidirectional water circulation - Google Patents
Steam generating element for unidirectional water circulation Download PDFInfo
- Publication number
- US3063430A US3063430A US483915A US48391555A US3063430A US 3063430 A US3063430 A US 3063430A US 483915 A US483915 A US 483915A US 48391555 A US48391555 A US 48391555A US 3063430 A US3063430 A US 3063430A
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- US
- United States
- Prior art keywords
- conduit
- water circulation
- generating element
- steam generating
- unidirectional water
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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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
- F22B21/02—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes
- F22B21/04—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely
- F22B21/08—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely the water tubes being arranged sectionally in groups or in banks, e.g. bent over at their ends
- F22B21/086—Frames built-up from water tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
- F22B21/22—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight
Definitions
- Proposed solutions to this problem include downcomers, improving the circulating pumps, and arranging the downcomers in the associated combustion chamber.
- the problem of proper circulation is particularly important in high pressure boilers, especially with respect to the type of boiler wherein the volume of water is reduced to a minimum.
- an arrangement adapted to create a thermal dissymmetry to obtain a difierential heating of water contained in two portions of a conduit such that a natural unidirectional circulation results through the conduit.
- FIG. 1 illustrates diagrammatically and in side view of a first embodiment of the invention
- FIG. 2 is a similar view of a second embodiment of the invention.
- FIG. 3 is a similar view of a third embodiment of the invention.
- FIG. 4 is a perspective view of a steam generator realized with elements according to FIG. 1.
- the boiler element of FIG. 1 includes an annular or ring-shaped system or conduit A disposed in a vertical plane and to which is connected a separator-collector B constituted by a simple horizontal cylindrical container.
- a heat source C is arranged in the center of the annular conduit which defines by its inner surface the combustion chamber for the boiler.
- the ring assembly can be considered generally as consisting of first and second conduits which lead into and out of the member B .and which are coupled by an intermediate member which gives the system a thermal asymmetry, the overall conduit being of substantially constant diameter.
- the separator-collector B is disposed at the left of the central vertical axis of the chamber defined by the conduit.
- the left portion or branch 10 of the conduit A depends vertically downward from the bottom of the collector B, While the right hand branch 12 leads to a higher position in said collector.
- This arrangement insures a thermal dissymmetry in the assembly whereby the water contained in the right hand branch will heat up more rapidly than that contained in the left hand branch, this being due to the presence of the upper h0rizontal section 14 of the conduit which is afiected by the lfiatented Nov. 13, 1962 heat in the combustion chamber under better conditions than the rest of the conduit and to the feeding of the left hand branch with cold water from the bottom of the collector B.
- a unidirectional water circulation is therefore created in the conduit according to the arrows X and Y. This result is further improved by arranging a water feed pipe 2 and steam take-ofi conduit 3 as illustrated. Moreover, the geometric dissymmetry of conduit portion 16 still further insures a unidirectional flow.
- FIGS. 2 and 3 parts corresponding to those of FIG. 1 are given the same reference provided with single and double primes respectively.
- a screen 5 of retractory bricks is positioned such that the right hand branch of each circuit heats up quicker, thus stimulating circulation in the direction of the arrows X and X.
- the heat sources C and C as illustrated, can be displaced relative to the center of the associated chambers towards the right hand branches.
- a steam generator element comprising a heat source, a collector-separator, a ring shaped system connected at both ends to and forming a continuous fluid system with said collector-separator, said ring shaped system defining a combustion chamber and comprising first and second conduit portions connected to said collector-separator, said first portion depending downwardly from said collector-separator, and means positioned between said first and second conduit portions to prevent the fluid system from being uniformly heated by the heat source in the combustion chamber whereby to cause a thermal dissymmetry and a resultant unidirectional flow of fluid in the system, said means including a conduit portion coupling said first and second portions so that with said collector-separator a closed ring is formed, the conduit portions being of substantially equal diameter, said heat source being positioned within the ring symmetrically with respect to the first and second portions, said conduit portions being part of a single tube.
Description
Nov. 13, 1962 3,063,430
G. ROSS] STEAM GENERATING ELEMENT FOR UNIDIRECTIONAL WATER CIRCULATION Filed Jan. 25, 1955 INV EN 1 OR GIOVANNI ROSS/ Unite ttes 3 063,430 STEAM GENERATING ELEMENT FOR UNI- DIRECTIONAL WATER CIRCULATION Giovanni Rossi, Via Gonzaga 7, Milan, Italy Filed Jan. 25, 1955, Ser. No. 483,915 Claims priority, application Italy .i'an. 26, 1954 1 Claim. (Cl. 122-406) The present invention relates to steam generators.
It is known that improper water circulation in steam boilers may be so serious as to cause the breaking of associated tubes and collectors.
Proposed solutions to this problem include downcomers, improving the circulating pumps, and arranging the downcomers in the associated combustion chamber.
The problem of proper circulation is particularly important in high pressure boilers, especially with respect to the type of boiler wherein the volume of water is reduced to a minimum.
It is accordingly an object of the present invention to provide effective water circulation by improved and efficient techniques.
According to the invention, there is contemplated an arrangement adapted to create a thermal dissymmetry to obtain a difierential heating of water contained in two portions of a conduit such that a natural unidirectional circulation results through the conduit.
The invention will next be described in greater detail with reference to the annexed drawing wherein some preferred embodiments are given by way of nonlirnitative examples of the range of the invention.
In the drawings:
FIG. 1 illustrates diagrammatically and in side view of a first embodiment of the invention;
FIG. 2 is a similar view of a second embodiment of the invention;
FIG. 3 is a similar view of a third embodiment of the invention; and
FIG. 4 is a perspective view of a steam generator realized with elements according to FIG. 1.
The boiler element of FIG. 1 includes an annular or ring-shaped system or conduit A disposed in a vertical plane and to which is connected a separator-collector B constituted by a simple horizontal cylindrical container. A heat source C is arranged in the center of the annular conduit which defines by its inner surface the combustion chamber for the boiler. The ring assembly can be considered generally as consisting of first and second conduits which lead into and out of the member B .and which are coupled by an intermediate member which gives the system a thermal asymmetry, the overall conduit being of substantially constant diameter.
The separator-collector B is disposed at the left of the central vertical axis of the chamber defined by the conduit. The left portion or branch 10 of the conduit A depends vertically downward from the bottom of the collector B, While the right hand branch 12 leads to a higher position in said collector. This arrangement insures a thermal dissymmetry in the assembly whereby the water contained in the right hand branch will heat up more rapidly than that contained in the left hand branch, this being due to the presence of the upper h0rizontal section 14 of the conduit which is afiected by the lfiatented Nov. 13, 1962 heat in the combustion chamber under better conditions than the rest of the conduit and to the feeding of the left hand branch with cold water from the bottom of the collector B. A unidirectional water circulation is therefore created in the conduit according to the arrows X and Y. This result is further improved by arranging a water feed pipe 2 and steam take-ofi conduit 3 as illustrated. Moreover, the geometric dissymmetry of conduit portion 16 still further insures a unidirectional flow.
In FIGS. 2 and 3, parts corresponding to those of FIG. 1 are given the same reference provided with single and double primes respectively. In these embodiments, a screen 5 of retractory bricks is positioned such that the right hand branch of each circuit heats up quicker, thus stimulating circulation in the direction of the arrows X and X. In order to render the thermal dissymmetry even more effective, the heat sources C and C", as illustrated, can be displaced relative to the center of the associated chambers towards the right hand branches.
There will now be obvious to those skilled in the art many variations of the structures set forth above. These variations will not, however, depart from the scope of the invention if defined by the following claim.
What is claimed is:
A steam generator element comprising a heat source, a collector-separator, a ring shaped system connected at both ends to and forming a continuous fluid system with said collector-separator, said ring shaped system defining a combustion chamber and comprising first and second conduit portions connected to said collector-separator, said first portion depending downwardly from said collector-separator, and means positioned between said first and second conduit portions to prevent the fluid system from being uniformly heated by the heat source in the combustion chamber whereby to cause a thermal dissymmetry and a resultant unidirectional flow of fluid in the system, said means including a conduit portion coupling said first and second portions so that with said collector-separator a closed ring is formed, the conduit portions being of substantially equal diameter, said heat source being positioned within the ring symmetrically with respect to the first and second portions, said conduit portions being part of a single tube.
References Cited in the file of this patent UNITED STATES PATENTS 360,053 Sawyer Mar. 29, 1887 695,956 Solomiac Mar. 25, 1902 1,919,521 Lasker July 25, 1933 1,976,462 Roe Oct. 9, 1934 2,182,782 Barnes Dec. 12, 1939 2,240,100 Schmidt Apr. 29, 1941 FOREIGN PATENTS 266,024 Germany July 11, 1911 388,859 Germany Jan. 21, 1924 448,657 Great Britain June 12, 1936 378,722 Italy Feb. 22, 1940 717,063 Germany Jan. 15, 1942 898,865 France May 9, 1945 59,908 Netherlands Aug. 16, 1947 832,293 Germany Feb. 21, 1952
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3063430X | 1954-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3063430A true US3063430A (en) | 1962-11-13 |
Family
ID=11436721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US483915A Expired - Lifetime US3063430A (en) | 1954-01-26 | 1955-01-25 | Steam generating element for unidirectional water circulation |
Country Status (1)
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US (1) | US3063430A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3162180A (en) * | 1962-06-06 | 1964-12-22 | Fuji Boiler Co Ltd | Steam generating device |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE266024C (en) * | ||||
NL59908C (en) * | ||||
US360053A (en) * | 1887-03-29 | Steam-boiler | ||
US695956A (en) * | 1900-03-31 | 1902-03-25 | Emile Solomiac | Boiler. |
DE388859C (en) * | 1921-05-24 | 1924-01-21 | Rudolf Wagner Dr | Water tube boiler with water guidance through Leitwand |
US1919521A (en) * | 1931-05-29 | 1933-07-25 | Lasker George | Marine boiler |
US1976462A (en) * | 1931-02-21 | 1934-10-09 | Stephen W Borden | Boiler for power plants |
GB448657A (en) * | 1934-08-06 | 1936-06-12 | Martin Schmidt | Improvements in and relating to water-tube steam generators |
US2182782A (en) * | 1936-07-22 | 1939-12-12 | Superheater Co Ltd | Superheater boiler |
US2240100A (en) * | 1935-07-17 | 1941-04-29 | Schmidt Martin | Water tube steam generator and parts thereof |
DE717063C (en) * | 1938-09-17 | 1942-02-05 | Schmidt Sche Heissdampf Ges M | Water tube boiler with natural circulation in individual circulation |
FR898865A (en) * | 1942-07-13 | 1945-05-09 | Wagner Hochdruck Dampfturbinen | Marine water tube boiler with natural circulation |
DE832293C (en) * | 1950-11-04 | 1952-02-21 | E H Otto H Hartmann Dr Ing | Device to prevent pipe cracks in water tube boilers with automatic water circulation |
-
1955
- 1955-01-25 US US483915A patent/US3063430A/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE266024C (en) * | ||||
NL59908C (en) * | ||||
US360053A (en) * | 1887-03-29 | Steam-boiler | ||
US695956A (en) * | 1900-03-31 | 1902-03-25 | Emile Solomiac | Boiler. |
DE388859C (en) * | 1921-05-24 | 1924-01-21 | Rudolf Wagner Dr | Water tube boiler with water guidance through Leitwand |
US1976462A (en) * | 1931-02-21 | 1934-10-09 | Stephen W Borden | Boiler for power plants |
US1919521A (en) * | 1931-05-29 | 1933-07-25 | Lasker George | Marine boiler |
GB448657A (en) * | 1934-08-06 | 1936-06-12 | Martin Schmidt | Improvements in and relating to water-tube steam generators |
US2240100A (en) * | 1935-07-17 | 1941-04-29 | Schmidt Martin | Water tube steam generator and parts thereof |
US2182782A (en) * | 1936-07-22 | 1939-12-12 | Superheater Co Ltd | Superheater boiler |
DE717063C (en) * | 1938-09-17 | 1942-02-05 | Schmidt Sche Heissdampf Ges M | Water tube boiler with natural circulation in individual circulation |
FR898865A (en) * | 1942-07-13 | 1945-05-09 | Wagner Hochdruck Dampfturbinen | Marine water tube boiler with natural circulation |
DE832293C (en) * | 1950-11-04 | 1952-02-21 | E H Otto H Hartmann Dr Ing | Device to prevent pipe cracks in water tube boilers with automatic water circulation |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3162180A (en) * | 1962-06-06 | 1964-12-22 | Fuji Boiler Co Ltd | Steam generating device |
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