JPH0216083Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a heat exchanger tube support structure for a boiler.

There are three types of conventional hanger pipes:

(1) As shown in FIG. 1, the hanger pipes 01 and 02 are made to flow downward, and their lower ends are connected to the lower part of the heat transfer surface X, and the upper ends of the heat transfer surface X are connected to the header 03. This method has the drawback that the drain inside the heat transfer surface cannot escape when the tank is stopped, and because of the downward flow, temperature changes tend to occur between the hanger pipes 01 and 02 at startup or under low load. .

(2) As shown in Figure 2, a small heat transfer surface There is one in which a circulating heat transfer surface Y is provided on the headers 03, 03. Although this method has no performance problems, it does have the disadvantage of increasing the number of headers and connecting pipes.

(3) As shown in Figure 3, connect the heat transfer tubes 01, 02, 03, 04 connected to the header 03 to the hanger tube 0
1, 02, 03, and 04, and a heat transfer surface Z is formed by combining the small heat transfer surface X for the hanger tube shown in FIG. 2 with the heat transfer surface Y disposed above it. This makes it possible to reduce the number of headers and connecting pipes, but since the difference in the length of the heat transfer surface pipes becomes too large, it is necessary to add extra wall inside the heat transfer surface pipes to adjust the flow rate, and the heat transfer surface becomes unbalanced. There is an economic disadvantage.

This invention is intended to improve the above-mentioned drawbacks, and aims to provide a hanger pipe that allows upward flow, has a small difference in length between the pipes, and has fewer headers and connecting pipes.

This idea consists of heat exchanger tubes arranged in a meandering manner in a nearly horizontal direction, suspended and supported by hanger tubes.The heat exchanger tubes are divided into an upper heat exchanger tube Y and a lower heat exchanger tube X, and the upper end of the lower heat exchanger tube X is extended. and a hanger tube 4b that supports the upper heat exchanger tube Y.
The lower end of is extended to form a hanger tube 1b that supports the lower heat exchanger tube X, and the load of the hanger tube 1b that supports the lower heat exchanger tube X is supported by the hanger tube 4b that supports the upper heat exchanger tube Y. This is related.

An embodiment of this invention will be explained with reference to FIGS. 4 and 5. In FIG. 4, the pipe 1 exiting the inlet header 6,
The tube 2 constitutes a short part of the lower heat transfer surface X, and then is raised and connected to the lower end of the upper heat transfer surface Y, while forming the main part of the rear upper heat transfer surface Y, which acts as hanger tubes 1b and 2b. do.

Next, the tubes 3 and 4 exiting the inlet header 6 form the main part of the lower heat transfer surface X, and then their upper ends are raised to support the upper heat transfer surface Y as hanger tubes 3b and 4b.

As shown in FIG. 4, the hanger pipe 1b and the hanger pipe 4b are connected by a rod 5 between the lower heat transfer surface X and the upper heat transfer surface Y, and the hanger pipe 1b
The load is supported by the hanger tube 4b. Similarly, by connecting the hanger pipe 2b and the hanger pipe 3b, the load on the heat transfer surfaces X and Y is finally transferred to the hanger pipe 4.
b, 3b.

According to the present invention, the hanger pipes 1b, 2b, 3b,
4b is an upward flow, which flows through the lower heat exchanger tube X and the upper heat exchanger tube Y.
Through this, the lengths of tubes 1, 2, 3, and 4 are equal,
A hanger machine without extra headers or connecting pipes was obtained.

[Brief explanation of the drawing]

Figures 1 to 3 show conventional examples. Figure 1 is a front view of a downflow type hanger pipe, Figure 2 is a front view of an upflow type with a small heat transfer surface for the hanger pipe, and Figure 3 is a front view of a hanger pipe with a small heat transfer surface. FIG. 4 is a front view of an upflow type without a small heat transfer surface, FIG. 4 is a front view of the present invention, and FIG. 5 is a cross-sectional view taken along line A--A in FIG. 4. 1, 2, 3, 4...tube, 1b, 2b, 3b, 4
b...hanger tube, 5...rod, X...lower heat exchanger tube, Y...upper heat exchanger tube.

Claims (1)

[Scope of utility model registration request] In a structure in which heat exchanger tubes arranged meandering approximately horizontally are suspended and supported by hanger tubes, the heat exchanger tubes are divided into upper heat exchanger tubes and lower heat exchanger tubes, and the upper ends of the lower heat exchanger tubes are extended to form the upper heat exchanger tubes. The lower end of the upper heat exchanger tube is extended to form a hanger tube that supports the lower heat exchanger tube, and the load of the hanger tube that supports the lower heat exchanger tube is supported by the hanger tube that supports the upper heat exchanger tube. A heat transfer tube support structure featuring: