SU39302A1 - Adaptation device for fuel skimming in moving furnaces - Google Patents

Description

The heterogeneity of solid fuels in size, composition and the presence of fines is the cause of the formation of local burnouts on the grate. Through these places, excess air bursts into the combustion space, cooling the firebox and lowering the coefficient of efficiency of the installation. On the other hand, the slagging of fuel creates a layer that is difficult to permeable to air, which leads to a decrease in the boiler forcing and incomplete burning of the combustible. Manual fire, produced by a stoker, cannot completely eliminate this, since it is not carried out continuously. In addition, since it is difficult for a stoker to hold her weight when hand-shaking, he comes to the grating web and, consequently, increases the failure. Opening the doors at the same time also increases the excess air in the firebox, cooling it, and moreover, in general, manual shaking of large grids is physically very heavy.

In the proposed device for fuel shurovka in fireboxes with a moving grill, there is a scraper above the latter consisting of a system of continuously cooled water with a group of horizontal pipes and vertical cranial processes, which the scraper receives from the drive reciprocating movement across the grill.h

In FIG. 1 is a side view of a device for fuel clearing in furnaces with a moving grate; FIG. 2 - its top view; FIG. 3 is a cross-section along AB in FIG. one.

The shurovka tool consists of a scraper ac, formed from a group of horizontal pipes a, located across the moving grate and reciprocating from the drive. Vertical teeth are welded to the pipes and the working articulated processes c, constituting the scraper proper, are U-shaped and located in the direction of movement of the lattice, i.e., their plane is perpendicular to the axis of the tool. Pipes a and processes with form a system through which cooling water continuously circulates to prevent them from burning out.

The direction of movement of the device is perpendicular to the movement of the grid. The device is reciprocated by the drive, and its stroke length allows one process to somewhat overlap the starting point of the adjacent one. Thus, as shown

experiments, adaptation, when moving, aligns the processes with all the burned-out places, the cut is a layer of fuel. An additional water supply by the middle pressure pipe b provides cooling of the extremes c at the partition between two grids. From the middle pressure pipe b, no water directly flows into the processes c, but only through the extreme pressure pipe with which it is connected at the end of the device. The middle pressure pipe, moreover, imparts the structural rigidity to the device, forming a triangle in cross section, at the apex of which lie the centers of two pressure pipes and one discharge pipe. The inlet of the appendix is welded to the extreme pressure pipe, leaving it to the drain.

In order to avoid rapid wear of the processes c, iron d strips are welded onto them, which after abrasion can be repaired by welding. To reduce the dip, the lower end of the appendix does not touch the lattice, but is located above it at some distance.

The subject matter of the invention.

A device for fuel shurovka in furnaces with a moving grille, characterized by the use of an AC scraper located above the grille, reciprocating from the drive and consisting of a group of horizontal pipes a and vertical crankshaft processes forming in combination with pipes and a water-cooled tubular system.