DE1249882B - Scaffolding and masonry-free, with natural circulation of the work by means of operated water tube boilers - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CI .:

F22b

German class: 13 a -10/20

Number: 1 249 882

File number: W 337881 a / 13 a

Filing date: January 26, 1963

Opened on September 14, 1967

The invention relates to a scaffolding and masonry-free, operated with natural circulation of the working medium Medium-capacity water-tube boilers, especially for overpressure firing, with horizontal ones Gas pulls with a transverse upper drum and one that surrounds the combustion chamber and the gas pulls Pipe box made of U-shaped pipes forming the ceiling, back wall and floor is limited and its flat side walls and the flat front wall between a lower distributor and upper header frame, the latter only through overflow pipes with the interior the drum is connected, in which the pipe box of a thin, gas-tight, resting on the pipes Sheet metal skin is complete.

All pipe connections between the drum and the pipe box or the gas baffles are made via a lower distributor and upper collector pipes that are outside the sheet metal skin, so that the sheet metal skin has no pipe penetrations, apart from one inlet and one outlet to the superheater. The upper drum is also free of any permanent connection with the gas-tight sheet metal skin and therefore easily accessible.

An oil- or gas-fired one operated with natural circulation of the working medium is known Water tube boiler with a horizontally arranged combustion chamber and two horizontal flue gas reverse flues the first of which contains a superheater.

Here are the inlet and outlet pipes for the superheater and those of the other contact heating surfaces before they open into manifolds led out through the sheet metal skin, creating numerous Pipe penetrations result that are difficult to keep tight.

In other, known water tube boilers of this type, the gas-tight sheet metal cladding surrounds or completely partly the upper drum which makes it difficult to access them. .

In other known, similarly built oil-fired Steam generators with a support frame or with corner tubes surrounded by the gas-tight sheet metal skin there is also the risk of acid corrosion within the sheet metal skin when the temperature drops below the dew point of the smoke gases.

Furthermore, in the case of self-supporting steam generators, access to the evaporator, superheater and Preheater pipes are often insufficient and repairs are difficult.

According to the invention, these disadvantages become apparent when there is no scaffolding or masonry, with natural circulation, scaffolding and masonry-free, with natural circulation
of the working fluid operated water-tube boiler

Applicant:

Walther & Cie. Corporation,

Cologne-Dellbrück, Waltherstr. 51

Named as inventor:

Georg Czempas, Cologne-Dellbrück

of the working fluid operated water tube boiler fixed in such a way that the two, the ceiling and. the bottom of the pipe box penetrating, parallel to the side walls extending gas baffles are also connected to the lower distribution frame and upper collecting frame, with the one in the first Throttle cable for the superheater consisting of horizontal pipe coils is supported on the side walls is and arranged in the second gas flue projecting pipe harps from one of the two boundary walls are.

The combination of these individual features creates a compact steam generator, which is light in weight, good elasticity in the pipe body and one of pipe penetrations has free gas-tight sheet metal skin, can be easily monitored, is free from the risk of corrosion, and there is no risk of liquid, be it oil or washing water, collecting in the combustion chamber.

Further details of the subject matter of the invention emerge from the following description of an embodiment. Herein shows

F i g. 1 shows a vertical section along the line I-I in Fig. 3,

F i g. 2 shows a vertical section along the line II-1I in FIG. 1

F i g. 3 shows a horizontal section along the line III-III in FIG. 1.

Like F i g. 1 shows, there is the gas-tight sealed, the combustion chamber and the gas cables receiving Boiler body from lying, U-shaped, part of the tube box forming cooling tubes 6, the bottom of a distributor 7 and open into a collector 8 at the top.

The flat front wall 9 also extends between this collector and distributor, in which one or more, e.g. B. enclosed by cooling frame 10

709 647/63

Claims (1)

3 4 Openings 11 for the installation of the burner or burners can be influenced. These walls are provided by the entrance. The pipe box is accessible from the outside at all times on the ceiling and door 40 (FIG. 1), which leads into the superheater duct 24, and the rear wall with a thin, fireproof layer 12. In Fig. 1 they are covered, and the floor is also shown in dashed lines in the fire partition walls and denoted by 41, space is a thin fireclay layer 13 or the like 5 42; Such walls can also be closed off by the flat tube walls 9a, 9b (FIG. 2) provided on the side walls of the tube box at the beginning and at the end of the superheater. between the lower manifolds 14 and the upper manifold. So-dage 43 held together by the distributors 7 and 14, and they are supported on the bottom like a rear cross-connector 16, a mecha-io a profile carrier 44 is slidably supported,
2 and 3 the arrangement of the overdistributor 17, 18 (FIG. 2) of the gas baffles 19, 20 heater 45, which are included from horizontal pipes. They are composed of vertical snakes close together. Furthermore, in FIG. 2 the tubes or finned tubes that are lying in a sealed manner, which can be seen between the contact tube harps 46, see the cooling tubes 6 passing through and at the top in 15 the collectors 21, 22 open out of the wall tubes 9a and into them again. Since the guiding walls are opened inwards. Otherwise, the same voltages must be left free for gas to pass through, parts with the same numbers as in FIG. 1 they either draw in the usual way at these points. A boarding door 47 (FIG. 2) allows this to be loosened up, or the last drive on the steering walls outside the cooling tubes 6 will occur at the gas passage under unpressurized spaces. speaking turn into the pipe crate floor or through the two guide walls 19, 20 (FIG. 3) -The ceiling is included and thus the gap in the space enclosed by the cooling tubes 6 in three Pipe box closed, so that completely free opening chambers are divided, genes for the passage of gas arise. In the combustion chamber The chamber 23 forms the combustion chamber, the chamber 23 and the gas flues 24, 25, the superheater flue is arranged close to the preheater 24 and the chamber 25 the derwand 9 a channel 26 which is provided with a gas flue to which, if necessary, a closable outlet (not shown) rer the preheater absorbing throttle cable with preist. This means that partially uncooled walls can be connected when the combustion chamber is washed out. The and the gas flues, the washing liquid or the like. Superheater 45 consists of horizontal pipe coils that are pulled. The cooling pipes 6, the front wall 9 30 around which the steam supply pipe 48 is framed and the side walls 9 a, 9 b are guided around in a gas-tight manner, whereby the leading edge of the sheet metal cladding 27, which is protected from contact with the flames between the collectors, runs through distributors without being exposed to the medium is and at the same time the pipe coil to be broken in countercurrent to pipes. The flue gases flow through from the pipe. The outflow box exiting tubes of the guide walls 19, 20 35 tube 49 lies below the supply tube 48 and are closed off by a sheet metal box 28, 29 reaching up to the collector 15 or both tubes clinging to the guide wall 19 and divider 14 reaching the front wall on, the no tubes at this point, the lining 9 on the sheet metal cladding 27 of the cooling tubes 6 is received. The tubes are attached to one in (Fig. 2). the corner of the throttle cable 25 lying distributor 38 and The drum 30 is guided over two or more power collectors 39, of which the main steam pipes term downpipes 31 of larger diameter, which go out at the same time 36, 37. The wall opening is through Mauerais Support tubes are used on the base frame 7, 14, factory 50 closed, which is through the preceding 16 supported. The transverse distributor 7 is protected from direct heat radiation via multiple steam pipes 48, 49 rere downpipes 32 fed from the drum 30, and protected. The gas-tight closure of the front over further downpipes 33 is drum water in 45 wall takes place at this point through a sheet metal plate the rear cross connector 16 passed. Of the 51, the one with the gas-tight one that covers the 9 pipes Collectors 15, 21, 22 go overflow pipe groups sheet metal skin is welded and a lower entrance 34, 35 in the drum 30. As the collector with the door 40 receives. Drum only mechanically, but not on the water side. The exemplary embodiment shows a steam generator connected there is a clear water circulation 50 ger with oil firing. It is also possible under Guaranteed, draws a on the bottom tubing in the combustion chamber 23 To arrange the grate firing from the drum 30 to the superheater, with corresponding changes led steam occurs according to FIG. 3 via the piping of the associated distributor. Construction device 36 made in a lying in the gas flue near the wall liehe modifications of the boiler body Distributor pipe 38, then after passing through 55 without leaving the principle of the invention the superheater into a manifold 39 and from there,
out into the extraction pipe 37. The two pipes 36 and 37 are the only pipe penetrations by claims:
the gas-tight sheet metal cladding that covers the combustion chamber and surrounds the throttle cables. 60 1. Scaffolding and masonry-less, with natural To prevent the water circulating in the superheater pass of the working medium from 24 incoming fire gases, some of the top and tubular boilers with transverse top drum and underneath the superheater tube bundle without essentially enclosing the combustion chamber and the gas flues Heat dissipation to the same in the contacting tube box, which is formed by U-shaped bent, gas flue 25 escape, partition walls from 65 are the ceiling, the back wall and the floor billose Refractory bricks used or the like. Applied pipes is limited and their level arranges, whereby by choosing the height of these walls side walls and the flat front wall between the superheated steam temperature within certain limits with a lower distributor and upper collector frame run, the latter only through overflow pipes with the interior of the drum is connected, characterized in that two the top and bottom of the pipe box penetrating gas baffles which run parallel to the side walls and are known per se (19, 20) also connected to the lower distribution frame and upper collecting frame are, with the superheater (45) consisting of horizontal pipe coils on in the first gas flue the side walls (19, 20) and arranged in the second throttle cable protruding from one of the two boundary walls are. 2. Water tube boiler according to claim 1, characterized in that the known per se, directly gas-tight sheet metal skin (27) resting on the pipes at the bottom and top of the distributor and collecting frame (7, 14, 16 or 15, 21, 22) is welded on and from the pipe box protruding ends of the gas baffles (19, 20) on shaft-like approaches (28,29) between the sheet metal skin and the distribution or collecting frame form a gas-tight seal. 3. Water tube boiler according to claim 1 or 2, characterized in that at the free ends the drawbar walls (19, 20), which are shortened in relation to the combustion chamber (23), form the last wall tube is inserted into the cooling pipe wall (6) of the pipe box and thus the one formed by the drawbar wall The opening in the pipe box closes. 4. Water tube boiler according to one of claims 1 to 3, characterized in that In addition to the known support downpipes (31) for the drum, two other groups of downpipes (32, 33) to the front cross distributor (7) and rear cross connector (16) of the lower Frame are connected. 5. Water tube boiler according to one of claims 1 to 4, characterized in that on front deep end of the sloping bottom of the pipe box near the front wall a collecting channel (26) for liquids with a closable drain opening over the entire width of the Pipe box is arranged. 6. Water tube boiler according to one of claims 1 to 5, characterized by an on The heat and gas-tight entrance door (40) at the end of the first throttle at the reversal point, through which the main steam pipes (36, 37) of the superheater are passed. Considered publications:
Dutch Patent No. 99,385;
French Patent No. 1088,912;
"Comburtion" magazine, February 1962, p. 18. 1 sheet of drawings 709 647/63 9. 67 © Bundesdruckerei Berlin