US3369527A - Boilers - Google Patents

Boilers Download PDF

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Publication number
US3369527A
US3369527A US555157A US55515766A US3369527A US 3369527 A US3369527 A US 3369527A US 555157 A US555157 A US 555157A US 55515766 A US55515766 A US 55515766A US 3369527 A US3369527 A US 3369527A
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US
United States
Prior art keywords
water
boiler
tube
tubes
flame tube
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 - Lifetime
Application number
US555157A
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English (en)
Inventor
Brola Gabriel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GENERALE THERMIQUE Ste
Original Assignee
GENERALE THERMIQUE Ste
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GENERALE THERMIQUE Ste filed Critical GENERALE THERMIQUE Ste
Application granted granted Critical
Publication of US3369527A publication Critical patent/US3369527A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B7/00—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body
    • F22B7/14—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body with both auxiliary water tubes and auxiliary fire tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/02—Combinations of boilers having a single combustion apparatus in common
    • F22B33/08—Combinations of boilers having a single combustion apparatus in common of boilers of water tube type with boilers of fire-tube type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40

Definitions

  • This invention relates to boilers.
  • the natural circulation which is established in a boiler is a function of the operational conditions of the burner and as these conditions vary constantly, the distribution of the heat flux in the boiler also changes. In certain conditions of operation it is possible that in one part of the boiler the natural circulation speed is increased, and in another part it is reduced or vice versa. In the region where the speed of the water becomes very low or even nil, excessive heating of the metal walls may result.
  • pockets of steam may be formed in the regions where the water speed becomes very low or nil; as these pockets cannot be entrained by the water, they isolate the metal of the boiler, which therefore results, in this region, considerable over-heating of the metal. This over-heating may, in consequence, increase the stresses and fatigue of the metal.
  • the present invention has for its object a fire-tube boiler which is improved in such a manner as to overcome these disadvantages.
  • the boiler includes, in known manner, a flame tube disposed within a body which contains the water to be heated or to be vaporised and is traversed by combustion-gas tubes communicating with the flame tube, and is characterised by water tubes which are disposed transversely with respect to the flame tube, preferably in the neighbourhood of the rear end of the flame-tube, and which connect the lower part of the body to the upper part of the latter.
  • These tubes receive from the flame tube an intense heat flux and, as the volume of water which they contain is low in relation to the flux received, the water is instantaneously set in motion by the thermo-syphon effect. Water circulation is thus established in the tubes which is varied as a function of the operation of the burner. The speed of circulation in these tubes may reach 1.5 to 2.5 metres per second.
  • the water tubes thus constitute a thermal pump which produces a continual recycling of the water in the boiler, that is to say an internal motion of all the water.
  • the discharge of the water into the tubes may be such that the Water contained in the boiler traverses them from four to eight times before leaving the boiler.
  • the tubes are preferably of annular form.
  • the tubes are, preferably, in the form of elbows in order to prevent the circulation of the water from disturbing the water level.
  • FIG. 1 is a view in axial section of a first embodiment of the boiler
  • FIG. 2 is a cross-section on the line IIH of FIG. 1;
  • FIG. 3 is a similar view to that of FIG. 1 of a second embodiment of the boiler.
  • FIG. 4 is a cross-section of the line IVIV of FIG. 3.
  • the boiler in accordance with the invention includes a cylindrical body 1 within which there is arranged a flame tube 2, the latter being coaxial with the body 1, as shown, or alternatively mounted eccentrically with respect to it.
  • a burner 3 for combustible liquid or gas, discharges into one end of the flame tube 2.
  • the body 1 is closed by end plates 4 and is traversed by combustion-gas tubes 5 which are secured to the plates 4 and communicate with flame tube 2.
  • the tubes 5 form two concentric bundles and a transverse wall 6 which is disposed at the end of the tube 2 opposite to the burner 3, redirects combustion gases from the flame tube to the inner bundle of tubes.
  • a second transverse wall 7 disposed around the upstream end of the flame tube redirects the gases to the outer bundle of tubes which have just passed through the inner bundle, the gases finally being then exhausted to a chimney through a' duct 8 and/or a duct 8a.
  • a feed water distributor arranged longitudinally which is in communication with a feed tube for cold water 10, and serves to distribute this water to the upstream part of the boiler as well as to its downstream part.
  • upper portion of the body or chamber 1 has a longitudinally-extending collector 11 which communicates with a discharge pipe 12.
  • Tubes are disposed transversely to and across the flame.
  • FIGS. 1 and 2 which show a hot water boiler, and these tubes 9 are in the form of circulating rings 13 which are secured in the wall of the flame tube, in the region of the downstream end of the latter, through the intermediary of lower connectors 14 and upper connectors 15.
  • the water contained in the body 1 can thusenter the rings through the connectors 14 and leave through the connectors 15.
  • the sleeves 14 and 15 may be disposed in the vertical, median plane or even, as shown, may be slightly inclined with respect to this vertical plane, some of them in one direction and the others in the opposite direction, in order to increase the spacing between two adjacent connectors 14 and 15.
  • the distribution and the collection of the water through the longitudinal conduits 9 and 11 ensures an improved distribution of the water in the boiler without disturbing the circulation eflect created by the thermal-siphon which is caused by the rings 13.
  • the boiler is intended for the generation of steam, and the plane of separation of the water and the steam is indicated at 17.
  • the tubes are here constituted by elbows 18 which are placed in the flame tube 2 face to face, two by two, symmetrically with respect to the vertical median plane. These elbows direct the water towards the periphery of the boiler, which substantially prevents disturbance of the water surface.
  • At least one water tube extending transversely across said flame tube and providing communications between said lower and upper portions, said water tube lying beyond one of the ends of said feed water distributor and said collector.
  • said flame tube comprises:
  • said water tube being disposed in the downstream portion.
  • a boiler accordingto claim 1 wherein the water tube is in the form of a ring, the boiler serving to supply hot water.
  • water feed means comprising an inlet pipe
  • said feed water distributor communicating with said inlet pipe.
  • said heated water collector means comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Solid-Fuel Combustion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
US555157A 1965-06-04 1966-06-03 Boilers Expired - Lifetime US3369527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR3213A FR1448883A (fr) 1965-06-04 1965-06-04 Perfectionnements apportés aux chaudières à tubes de fumée

Publications (1)

Publication Number Publication Date
US3369527A true US3369527A (en) 1968-02-20

Family

ID=8569182

Family Applications (1)

Application Number Title Priority Date Filing Date
US555157A Expired - Lifetime US3369527A (en) 1965-06-04 1966-06-03 Boilers

Country Status (6)

Country Link
US (1) US3369527A (ja)
BE (1) BE681975A (ja)
DE (1) DE1579898A1 (ja)
ES (1) ES327516A1 (ja)
FR (1) FR1448883A (ja)
GB (1) GB1133257A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112984500A (zh) * 2021-01-27 2021-06-18 杭州聚能环保科技股份有限公司 一种卧式单炉胆煤粉锅炉

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731779A1 (fr) * 1995-03-15 1996-09-20 Geec Sarl Perfectionnement aux chaudieres a foyer et boite de retour de flamme

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US741353A (en) * 1903-03-03 1903-10-13 Edward Makin Jr Steam-generator.
US2604080A (en) * 1949-10-17 1952-07-22 Ralph R Grubbs Water circulating tube attachment for horizontal boiler flue
GB928097A (en) * 1961-04-04 1963-06-06 Spanner Boilers Ltd Improvements in and relating to water heaters
US3241530A (en) * 1964-07-06 1966-03-22 Eclipse Fuel Eng Co Scotch marine fire tube boiler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US741353A (en) * 1903-03-03 1903-10-13 Edward Makin Jr Steam-generator.
US2604080A (en) * 1949-10-17 1952-07-22 Ralph R Grubbs Water circulating tube attachment for horizontal boiler flue
GB928097A (en) * 1961-04-04 1963-06-06 Spanner Boilers Ltd Improvements in and relating to water heaters
US3241530A (en) * 1964-07-06 1966-03-22 Eclipse Fuel Eng Co Scotch marine fire tube boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112984500A (zh) * 2021-01-27 2021-06-18 杭州聚能环保科技股份有限公司 一种卧式单炉胆煤粉锅炉

Also Published As

Publication number Publication date
DE1579898A1 (de) 1970-08-27
ES327516A1 (es) 1967-07-16
FR1448883A (fr) 1966-08-12
BE681975A (ja) 1966-11-14
GB1133257A (en) 1968-11-13

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