SE500382C2

SE500382C2 - Composite boiler - comprises burner-fired steam boiler and connected flue gas-fired economy part

Info

Publication number: SE500382C2
Application number: SE8804253A
Authority: SE
Inventors: Erik Andersson; Haakan Nilsson
Original assignee: Gadelius Sunrod Ab
Priority date: 1988-11-25
Filing date: 1988-11-25
Publication date: 1994-06-13
Also published as: SE8804253L; SE8804253D0

Abstract

The economy part (14) of the composite arrangement is formed by horizontal distribution and collection boxes (19, 20) with transversal horizontal tubes (21, 22). Between each pair of upper and lower tubes, are welded several tubes (23) with external surface enlarging components. The top side of the economy part is located immediately below the water level (16) in the steam boiler (10), and by virtue of short connecting pipes (25, 26) between the two main parts of the composite boiler, and a multiplicity of vertical tubes it is possible to achieve automatic circulation in the system.

Description

R \J G0 382 2 Uppfinningen kommer här nedan att förklaras med hänvisning till ett på bifogade ritningar visat utföringsexempel, där Fig. 1 visar en sidovy av pannan Fig. 2 visar pannan sedd ovanifrån Fig. 3 visar ett vertikalsnitt genom ekonomiserdelen, och Fig. 4 i större skala visar en detalj av de värmeupptagande rören i ekonomiserdelen, motsvarande vid IV ínramat område i Fig. 1. Ångpannan 10 är av godtycklig känd typ försedd med öppning ll för montering av en oljebrännare. Ånga tas ut genom en ledning 12, och matarvatten tillförs genom en ledning 13. The invention will be explained below with reference to an exemplary embodiment shown in the accompanying drawings, in which Fig. 1 shows a side view of the boiler. Fig. 2 shows the boiler seen from above. Fig. 3 shows a vertical section through the economizer part, and Figs. Fig. 4 shows on a larger scale a detail of the heat-absorbing pipes in the economizer part, corresponding to the IV-framed area in Fig. 1. The steam boiler 10 is of any known type provided with an opening 11 for mounting an oil burner. Steam is taken out through a line 12, and feed water is supplied through a line 13.

Ekonomiserdelen 14 är placerad i avgaspassagen 15 från en icke visad dieselmotor, och är placerad så att dess högsta parti befinner sig under vattennivån 16 i ångpannan.The economizer part 14 is located in the exhaust passage 15 from a diesel engine (not shown), and is positioned so that its highest portion is below the water level 16 in the steam boiler.

Från ångpannans undre parti utgår två parallella ledningar 17 till ekonomiserdelens 14 medan tvâ motsvarande ledningar 18 sträcker sig från pannan strax under vattennivån undersida, till ekonomiserdelens översida.From the lower part of the boiler, two parallel lines 17 extend to the economizer part 14, while two corresponding lines 18 extend from the boiler just below the water level below, to the upper side of the economizer part.

Ekonomiserdelen - se Fig. 3 - omfattar två undre fördelningslådor 19, eller utgör förläng- ningar av dessa, samt två övre samlingslàdor 20, till ledningarna 18, eller utgör förlängningar av dessa. som är anslutna till ledningarna 17, som är anslutna Lådorna 19 och 20 är belägna utanför gaspassagen 15, och mellan dem sträcker sig ett antal undre respektive övre tuber 21, 22.The economizer part - see Fig. 3 - comprises two lower distribution boxes 19, or constitutes extensions thereof, and two upper collection boxes 20, to the lines 18, or constitute extensions thereof. which are connected to the lines 17, which are connected The boxes 19 and 20 are located outside the gas passage 15, and between them extend a number of lower and upper tubes 21, 22, respectively.

Mellan tuberna är ett antal vertikala rör 23 insvetsade, vart och ett försett med utvändiga ytförstorande element 24. och den nära anslutningen till vilket gör cirkulationspumpar Det stora antalet vertikala rör, pannan medger självcirkulation, överflödiga. 5,. Û 332 *- 3 Ventiler 25, 26 i ledningarna 17 och 18 gör det. möjligt att koppla bort ekonomiserdelen från ångpannan. Vid eventuellt läckage i något rör kan man bränna av motsvarande tuber 19, 20 från lådorna 21, 22, och lyfta ut hela rörgrinden för översyn och senare återinsvetsning.Between the tubes a number of vertical pipes 23 are welded in, each provided with external surface enlarging elements 24. and the close connection to which circulating pumps make The large number of vertical pipes, the boiler allows self-circulation, superfluous. 5 ,. Û 332 * - 3 Valves 25, 26 in lines 17 and 18 do so. possible to disconnect the economy part from the boiler. In the event of a leak in any pipe, you can burn off the corresponding tubes 19, 20 from the drawers 21, 22, and lift out the entire pipe gate for inspection and later rewelding.

Ekonomiserdelen är försedd med konventionella sotblåsnings- apparater 27, arbetande med tryckluft eller ånga.The economizer part is equipped with conventional soot blowing devices 27, operating with compressed air or steam.

Avgaspassagen 15 har, inom ekonomiserdelen, en fyrsidig, här kvadratisk tvärsektion. Rören 23 är försedda med ytförstorande element 24 i form av radiellt riktade pinnar. Dessa är pà i och för sig känt sätt dragna genom en kvadratisk matris, som gör att varje rör kommer att täcka ett bestämt kvadratiskt område inom passagen 15. Rör av denna typ erbjuder litet motstånd mot de parallellt med rören strömmande gaserna, och formbarheten på pinnarna gör det möjligt att bygga in stort antal rör och effektivt utnyttja tillgängligt utrymme inom passagen.The exhaust passage 15 has, within the economy part, a four-sided, here square cross section. The tubes 23 are provided with surface enlarging elements 24 in the form of radially directed pins. These are drawn in a manner known per se through a square matrix, which means that each tube will cover a specific square area within the passage 15. Tubes of this type offer little resistance to the gases flowing parallel to the tubes, and the formability of the pins. makes it possible to build in a large number of pipes and make efficient use of available space within the passage.

Claims

U '1 Cl) Od OO BD P a t e n t k r a v

1. A composite boiler comprising a burner-fired steam boiler (10) and an economizer (14) belonging to the boiler in the form of a tubular heat exchanger which is arranged to be heat-supplied with exhaust gases from a combustion unit separated from the boiler burner such as a diesel engine. is connected in parallel with the steam boiler, characterized in that the economizer (14) is located next to and next to the steam boiler (10), that the economizer (14) is located with its highest level below the water level (16) in the steam boiler (10), that the economizer's heat exchange pipe (23) are arranged substantially vertically between a lower distribution box (19) which receives water from the lower part of the steam boiler (10), and an upper distribution box (20) which delivers preheated water to the upper part of the water mass of the steam boiler (10).

Composite boiler according to Claim 1, characterized in that the ends of the vertical pipes (23) connect to horizontal distribution tubes (21, 22) which are connected to the distribution boxes (19, 20) located outside the economizer's exhaust passage (15). , which are connected to the boiler (10) by means of connecting lines (25, 26).

3. A composite boiler according to claim 1 or 2, characterized in that the vertical economizer tubes are provided with external surface enlarging elements (24).

Composite boiler according to one of Claims 1 to 3, characterized in that the exhaust passage (15) of the economizer (14) has a four-sided cross-section and that the vertical pipes (23) have surface-enlarging elements (24) which in a manner known per se have shaped so that each tube (23) with pins (24) covers a square surface. 5 years 322

Composite boiler according to one of Claims 1 to 4, characterized in that the economizer (14) has a substantially vertical exhaust passage (15) which is arranged for gas flow through in the upward direction.