DE75996C - Steam boiler firing - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 24: Combustion systems.

ORLAND DORE ORVIS in CHICAGO. Boiler firing.

Patented in the German Empire on January 14, 1893.

The present invention creates arched boiler rooms in steam boiler systems used, whose cavities filled with water serve directly as heating surfaces and at the same time protect the walls of the main boiler from the jet flame.

In addition, hollow grate bars are provided so that the grate bars and the arched ones Boiler water flowing through cavities is exposed to the full effect of the heat.

The furnace is easily accessible so that grate bars can be placed without difficulty respectively Can replace connecting pipes.

The firing can also be operated with the lower one for every boiler that is already in operation Attach the furnace.

It means:

Fig. Ι a longitudinal section of the new furnace with two arched boiler rooms,

Fig. 2 shows a cross section according to 2-2, Fig. 1,

3 is a front view with the masonry removed,

Figure 4 is an enlarged end view of one of the domed boxes Yardstick,

Fig. 5 shows a section according to 5-5, Fig. 6, the new furnace with a vaulted boiler room and

Fig. 6 is a longitudinal section of the same.

The same parts are everywhere denoted by the same letters.

AA are the side walls and B the rear wall of the masonry for the steam boiler C of known construction. The furnace is provided with one or more fire doors D. E, Fig. I, are the doors to the ash fall, which is closed at the rear by the fire bridge F.

In the direction of the longitudinal axis of the boiler, below it, between the fire bridge and the front masonry, the two curved water boxes GG, which form cavities b , are stored, which leave a space α between them and can either be let into the masonry laterally or spaces between them and leave the walls free.

The front end of the vaults formed by these boxes is open and communicates with the furnace doors, while the hollow end walls G ^{2 are} attached to the rear.

The water chambers are expediently constructed from sheet steel or otherwise a metal that is as fire-resistant as possible.

At the front end of the arch, the arched cavities are connected to one another by transverse tubes c. From c, the hollow grate bars d run to the rear wall G ² , Fig. 1. These grate bars in connection with the arches GG form the fire chamber H for the boiler.

In order to create a larger combustion surface, the roasting sticks can be raised alternately and arrange deeper.

With the rear end G ^{2 the} same are connected by simple socket elbows e (Fig..).

In this way, the entire fire chamber can be inserted fully assembled into the masonry. Any grate bar can, however, be removed from the already installed furnace

Claims (2)

and can be replaced without having to take the furnace apart. In the case of ashes, beneath the grate bars d and parallel to the latter, there are a number of tubes /, the rear ends of which are connected to a cross tube g by socket bends h, while their front ends are inserted into the cross tube k. The rear pipe g is connected to the grate bars by a pipe i and a T-piece _ /, Fig. R. The cross tube g can simply hang on the grate bars or be attached to the masonry with lateral extensions. The water access to the whole system (arches, grate and pipes) takes place through a pipe ot, which is connected to the boiler and the two cross pipes c and k. In this way, water can always enter the system from the boiler. The pipe n, which, connected to m, introduces fresh feed water from the feed pump or the preheater, serves for the inlet of fresh water. When the feed water is introduced into the boiler through the pipe system, the former also serves as a preheater. The constant water circulation between the furnace and the boiler takes place on the one hand through the pipe m, on the other hand through the pipe o, which respectively through a socket elbow ρ with the highest point of the bend. the water chamber b is connected and the most heated water is supplied to the boiler. FIGS. 5 and 6 show the same furnace with a single arc extending over the entire width of the furnace. At the rear end of the furnace, the fire gases first go down under the rear wall G2 of the water chamber and then over the fire bridge. The present system can also be used where the combustion gases are to be directed directly upwards. The rear wall G2 would then fall away. If necessary, the hollow grate bars can also be replaced by solid grate bars of known construction and the arched water chamber can be used alone. This system can also be used in other ovens, e.g. B. in heating and baking ovens. In the case of steam boilers, not only the heating surface of the boiler is considerably enlarged by the firing present, but the main advantage lies in the fact that the full heating power, which is developed by the combustion material burning on the grate, is used directly to heat the water. PateNT-A ν Proverbs: 1. On steam boiler furnaces with a downward flaming flame of the type protected by patent no. 70988, the arrangement of one or two arched chambers surrounding the furnace, which are connected to the boiler by pipes op , for the purpose of preheating the water and at the same time the boiler walls to protect from the direct jet flame. 2. At the firebox under 1. marked way the arrangement of the hollow grate bars d, on the one hand c in the cross tube, Fig. I, are fixed, and on the other hand, the water reservoir G open into the rear wall G ^2. At furnaces the type marked under 1. the arrangement of the pipe system / in the case of ash, which is through cross pipe g with the hollow. Grate bars d and communicates with the boiler through cross tube k and tube m (Fig. 1 and 6). . .:. : 1 sheet of drawings.