SU17251A1 - Superheater for locomobile, etc. boilers - Google Patents

Description

In the proposed superheater for locomobile and similar boilers, steam superheaters are used, elements located in two adjacent flue tubes and each consisting of three tubes, of which two are smaller sections and one located under the said pipes, flatten a larger section .

In FIG. 1 schematically depicts a partial longitudinal section of the boiler; FIG. 2 is a longitudinal section of the smoke tube with a superheater element placed in it; FIG. 3 is a section along the a-b in FIG. 2, FIG. 4 is a diagram of the connection of the pair element of the superheater as well as the connection of pipes in each element.

The superheater, in order to reduce the number of connections to the collector, consists of paired superheater elements located in two adjacent flue tubes (Fig. 1). Each element is formed from three tubes, of which two 1, 1 have a small cross section (Fig. 2, 3), and the third, located under the said tubes, represents a flattened tube 2 of a larger cross section. The tubes are interconnected in such a way that the tubes 1, 1 of each element at one end, drain, form a tube 2 of a larger section, located in the same fire tube, and at the other end of the tube element 1, 1 the upper smoke tube is attached to the humid steam box 3, and the tube 2 is divided into two tubes 1, 1 located in the lower smoke tube, with the larger cross-section tube 2 leaving the last tube 2 connected to the superheated steam box (Figs 1, 4). In order to increase the surface of the superheater, another element can be attached to the second element, located in the third smoke tube.

Steam from the steam space of the boiler enters the box 3, from where it flows into the counterflow to the flue gases through pipes 1, 1, then enters pipe 2 and goes along the gases until the next bifurcation in the lower fire tube, which also goes against gases, and in the undivided part, along them, then enters the box 4 of superheated steam.

The subject of the patent

1. A superheater for locomobile and similar boilers characterized by the use of steam superheater elements located in two adjacent fire tube and each of three tubes, of which there are two 1, 1 smaller cross section and one located under said tubes , flatten the tube 2 of a larger cross-section, connected in such a way that the tubes 1.1 of the smaller cross-section of each element are connected at one end of the element into the tube 2 of a larger cross section located in the same smoke tube

handset; at the other end of the tube element 1, 1, the upper smoke tube is connected to the humid steam box 3, and the tube 2 is divided into two tubes 1 located in the lower smoke tube, the larger cross-section tube 2 coming out of which is connected to the box 4 steam, where steam in pipes 1, 1 flows to counterflow to flue gases, and in pipes 2 is parallel to them.

2. The modification described in paragraph 1 of the superheater, characterized in that the second. Another element located in the third smoke tube is connected to the steam heater unit.

Fig 2

FIG. 3