DE340288C - Fuel layer leveler for closed double firing - Google Patents

Description

As is well known, with good combustion it must be the draft of the combustion chamber by means of which the combustion air passes through the fuel layer, grow with the height of the fuel layer. at otherwise the same conditions will increase with the height of the layer their resistance The amount of air passing through is therefore smaller, especially when the air takes a different, more comfortable route finds. This is the case with closed

ίο double firing, e.g. B. with two-flame tube boilers with internal firing and common fire puffs and smoke slide. If one grate is loaded higher than the other, then so the greater part of the air becomes the easier route through the thinner, less resistance take the offering layer, as opposed to the requirement for good combustion. Would the Fuchszug cause good combustion with the same fuel distribution on both grids, see above with uneven distribution and the same draft in the highly charged furnace with a lack of air, burned in the low-loaded with increased excess air, which in both cases Means wasting coal.

The object of the invention remedies this problem by (in the case of manual loading) either the inequalities of the fuel layer height displayed or with automatic Furnaces are compensated.

In the drawing, an embodiment of the object of the invention is in the vertical Section shown.

The fixed bell b is located in a vessel α with a liquid seal and in this again the bell c suspended by means of the spring i. The pipe f coming from one furnace of a double furnace opens under this . The pipe e that opens over the bell comes from the other furnace of the same system. Under the bell c there is therefore the pressure of a z. B. the left firebox, above it the pressure of the other right firebox. The bell c carries a mercury cup g and an immersion prong h, opposite these are firmly connected to the bell b , the immersion prongs i and the mercury cup k, so that when the bell c rises, the prongs i in the well g, when the same goes down, the prongs h immersed in the well k and with each immersion an electric current is closed, whereby electrical noise or light signals are given or, in the case of automatic loading, the charring is suspended on the required side.

The device works as follows:

The stoker fed the fire on the right a little higher than the fire on the left. As a result, more air is sucked in through the left grate than through the right one, and since the same draft prevails at the end of the flame tubes and the larger amount of exhaust gas on the left results in a greater draft gradient from the combustion chamber to the flame tubes, the combustion chamber draft on the left will be smaller than right side. This will raise the bell c, the prong i will dip into the mercury, and the left-hand sign will indicate to the stoker that the left-hand furnace is not sufficiently loaded. Correspondingly, with a lower layer height in the right furnace, the bell c will sink, the

Immerse the prongs h in the cup k and. the sign to the boiler attendant. given that is to be added on the right.

In the case of automatic loading, electromagnets can be used to cause the half- loaded furnace to stop until the layers are identical.

If the movable bell is not under a fixed bell, either the whole Mechanism to be relocated in the enclosed space, or 'it is due to frictional losses the exact effect of the device called into question.

Claims (1)

Patent claim: Fuel layer leveler for closed double firing, marked by such an arrangement that the pressures in the two combustion chambers serve to remove inequalities in the fuel bed heights display or offset. For this purpose ι sheet of drawings.