SU1557419A1 - Boiler - Google Patents

Abstract

The invention relates to energy and can be used in boiler building. The purpose of the invention is to reduce metal intensity and increase reliability. A weight load from the lower portions of the evaporator tubes 3 of the screen separating the furnace 1 from the shaft 2 is transmitted through spacers 8 to the suspended evaporator tubes 5 of the heating surface 4 to which they are connected. Since pipes 3 and 5 are evaporative, their temperatures are about the same, which determines the absence of temperature stresses in the seams of the spacers 8. In this case, the suspension to the frame 11 of pipes 3 is carried out without the use of forks. 2 Il.

Description

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Fig1

The invention relates to energy and can be used in the construction industry.

The aim of the invention is to reduce the metal intensity and increase the reliability of the boiler.

Figure 1 shows the boiler, a general view; figure 2 - section aa in figure 1.

The boiler contains a furnace 1 and a convective shaft 2, separated from one another by a screen of evaporator tubes 3. In shaft 2, a package of tubular heating surface 4 with suspended evaporator tubes 5 is installed. The lower sections of tubes 3 of the screen are fastened together, and the upper ones are bent inward 1 with the formation of an aerodynamic protrusion from the side of the firebox 1 and the bottom from the side of the rotating chamber 6. On their part, the upper sections of the pipes 3 form a festoon 7. The suspended pipes 5 are connected to the pipes of the heating surface 4 and are rigidly fastened to the lower sections s tubes 3 pro- screen with 8 bets.

Other screens 9 of the firebox 1 and screens 10 of the shaft 2 are suspended from the frame 11, to which the pipes 5 and the upper sections of the pipes 3 are also suspended. The upper sections of the pipes of the heating surface 4 are fastened to the screen 10 of the mine 2 with spacers 12. On the screen 10, as well as on the screen of pipes 3, the lower convective tubular bag 13 is fastened. The frame 11 is mounted on the foundation 14 of the boiler. In the rotary chamber 6 installed the superheater 15, also suspended from the frame 11.

The power operation of the boiler is carried out as follows.

Weight load from the screens 9 of the firebox 1, screens 10 of the shaft 2, the superheater 15 and the upper sections

5 0 5

0 0

five

five

the pipes 3 is transferred to the frame 11, and from there to the foundation 14.

The weight load from the lower pipe sections 3 to the frame 11 is transmitted through spacers 8 and suspended pipes 5, to which part of the weight load from the heating surface package 4 is also transmitted and through pipe 5 part of the weight load from the lower package 13. Other parts of the weight load from package 13 and the heating surfaces 4 are transferred to the frame 11 through the screen 10 of the shaft 2. Since the pipes 3 of the screen separating the furnace 1 from the shaft 2 and the pipes 5 are evaporative, they are about the same temperature, which determines the absence of temperature stresses in the seams This means that the suspension to the frame 11 of the pipes 3 of the screen separating the furnace 1 from the shaft 2 is carried out without using forks, which increases the reliability and reduces the intensity of the boiler.

Claims (1)

Invention Formula A boiler containing a furnace and a convective shaft, separated from one another by a screen of evaporator tubes, and a package of tubular heating surface installed in the shaft with hanging evaporator tubes, the lower pipe tube sections being fastened together and the upper ones bent inward of the furnace to form an aero dynamic protrusion characterized in that, in order to reduce metal consumption and increase reliability, the suspension tubes are connected to the tubes of the heating surfaces package and rigidly fastened to the lower portions of the tubes of the screen. Aa FIG. 2