JPS61173008A - Supporter for superheater tube,etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a boiler modularized in a factory for barge transportation, and a support device for preventing rolling of a superheater, reheater, and economizer of the boiler. This is related to.

Conventional technology Small and medium-sized boilers delivered to regions with extremely poor local working environments, such as the Middle East and Africa, are modularized, that is, the entire boiler is assembled and completed at a factory, and then transported to the site by barge. The method of installing the perilla as is is advantageous in terms of quality, construction period, construction cost, etc.

However, once the boiler was upgraded, its strength during barge transportation,
In terms of safety and economy, there are cases where it is not necessarily advantageous to create an integral module, and in such cases, an alternative construction method is to divide the boiler into two modules. .

An outline of this two-part boiler module construction method will be explained below. Figure 7 shows the outline of the boiler after assembly is completed using the two-part modular construction method.

In this chemical construction method, as shown in Figures 8a and 8b, the entire boiler is vertically cut into two halves at the positions indicated by reference numeral A in Figure 7, and each is divided into two separate modules 1.2 at the factory. It is assembled and completed.

The upper and lower modules 2 assembled and completed at the factory are transported to the site by barge 3 as shown in FIG. 9, where they are assembled together and completed as shown in FIG. 7.

For on-site assembly, first, as shown in Figure 10a,
A temporary gate-shaped frame 4 is assembled, the upper module 1 is lifted up by this gate-shaped frame 4, the lower module 2 is carried there (Fig. 10b), and the upper and lower modules 1.2 are assembled together. Yes (Figure 10c).

However, during barge transportation of boiler modules, a lateral load of up to 0.6 G is generated due to ship shaking, so one of the most important points to consider when designing the two-part modularization method for large boilers is The problem lies in how to support the superheater tubes, reheater tubes, and economizer tubes, which are the heaviest among the components, against the shaking of the ship during barge transportation to ensure safety.

Problems to be Solved by the Invention Therefore, the present invention has been made in order to solve the problems in the prior art, and relates to a two-part modular construction method for a large boiler. against ship shaking during module barge transport.

The object of the present invention is to provide an inexpensive and safe support device for superheater tubes, reheater tubes, and economizer tubes.

Means for Solving the Problems In order to achieve this object, the supporting device for superheater tubes, etc. of the present invention is designed to support superheaters, reheaters, and Support beams are installed above and below the charcoal panel, passing through the furnace walls on the left and right sides of the boiler.
Fixing the suspension pipes or supporting hardware of the superheater, reheater, and economizer with the support beam, and providing a vertical beam between the upper and lower main Ibac stays in the part where the support beam penetrates the furnace wall; It is characterized in that the vertical beam and the support beam are connected to each other.

EXAMPLES The present invention will now be described in detail with reference to illustrative examples. Note that the same reference numerals are used for components common to those of the prior art described above.

FIG. 1 shows an example of a completed factory drawing of a boiler upper module to which the present invention is applied. In the figure, reference numeral 5 denotes a boiler supporting steel frame, which is strongly reinforced to withstand vertical and lateral loads caused by the shaking of the ship during transportation of the boiler module by barge.

The vertical load of the boiler is supported by the boiler supporting steel frame 5 by a hanging rod 6. On the other hand, the lateral load of the boiler is first transmitted to the main backsteer, which is supported by the boiler support steel frame 5 by connecting the main backsteer and the boiler support steel frame 5 with a stopper 8 .

The lateral loads of the superheater tubes 9, reheater tubes 10, and economizer tubes 1, which are the heaviest among the boiler components of the present invention, are transmitted to the main backsteer in the following manner.

Here, as a representative example, the reheater tube 10 shown in part ■ in FIG.
The following is a detailed explanation of the support guidelines. (The support method of other parts is also similar to that of the reheater tube.) Figures 2 to 4 show details of the support structure of the reheater tube 10. In these figures, reference numeral 3 is a hanging pipe, and the reheater pipe 10 is fixed to the hanging pipe 13 by welding via a spacer 14. Support beams 15 are arranged on both sides of the hanging pipework 3 above and below the panel of the reheater tube 10, and both ends thereof penetrate the furnace wall 16 as shown in FIG.

The support beam 5 and the suspension pipe 13 are fixed by a support metal fitting 17, and the lateral load of the reheater tube IO due to the rocking of the ship is transmitted to the support beam 5 via the suspension pipe 13. Incidentally, the workpiece 2 is a pipe protection rubber interposed at the joint between the hanging pipe work 3 and the support beam 15.

As shown in FIG. 5, the support beam 15 penetrating the furnace wall work 6 is fixed by the vertical beam 18 provided between the upper and lower main backstayers outside the furnace 16a and the portoe 9.
The lateral load transmitted to the support beam 15 is transmitted to the vertical beam 8.

The vertical beam 18 is fixed to the upper and lower main backsteers by welding, and the lateral load of the reheater pipework 0 is transmitted to the main backsteer.

As mentioned above, the lateral load on the reheater tube 10 due to ship rocking is
Suspension pipe 13, support beam 15. The lateral load transmitted to the main backsteer via the vertical beam 18 is finally transmitted to the boiler support steel frame 5 by the stopper 8 (FIG. 1).

Effects of the Invention In a normal boiler, the superheater tube 9, the reheater tube 10, and the economizer tube 1 are suspended by the suspension tube 13, and the boiler can be constructed as a module with the same structure. When transported by barge, a large lateral load is generated due to the shaking of the barge 3, and the superheater tube 9, reheater tube 0, and economizer tube AE collide with the furnace wall 6, causing damage to the tubes. By adopting the support device according to the present invention for the superheater tube 9, reheater tube 10, and economizer tube 11 of the boiler to be modularized, the superheater tube 9, reheater tube 10 due to the shaking of the barge 3 can be prevented. Also, the lateral load of the economizer tube 11 can be safely and reliably transmitted to the boiler supporting steel frame 5, and the modularization of the boiler can be facilitated.

[Brief explanation of drawings]

Fig. 1 is an assembled view of an upper module in which a support device for superheater tubes and the like according to the present invention is installed, Fig. 2 is an enlarged view showing details of the support device in section ◯ of Fig. 1, and Fig. 3 is a diagram of Fig. 2 Fig. 4 is an enlarged plan view of the part ■, Fig. 5 is an enlarged longitudinal sectional view of the furnace wall penetrating portion of the supporting device, and Fig. 6 is an enlarged longitudinal sectional view of the part ■ in Fig. 5. The enlarged view, Figure 7, is the front view of the suspended boiler completed by assembling the two-part boiler module, and Figure 8
Figure a is a schematic front view of the upper module obtained by dividing the entire suspended boiler above into two parts, Figure 8b is a schematic front view of the lower module obtained in the same way, and Figure 9 is the upper module of the same as above. Figure 10a is a barge transportation diagram of the lower module, and Figure 10a is a diagram of the temporary gate frame assembly and upper module loading diagram of the two-part boiler module assembly procedure.
Figure b shows the upper module tapping and lower module loading diagram of the same assembly procedure, and Figure 10c shows the same assembly procedure.
This is a diagram showing the joint welding of the upper and lower modules and the removal of the temporary gate-type frame. 1.e upper module, 2..lower module, 5..
Boiler support steel frame, 7. Main backstay, 9. Superheater tube, 10. Reheater tube, 11. Economizer, 13. Hanging tube, 15. Support beam, 16. Furnace Wall, 17...Support hardware, 1B...Vertical beam. Figure 2 Figure 4 Figure 6 Figure 7

Claims (1)

[Claims] In a boiler modularized in a factory for barge transportation, support beams are provided above and below the superheater, reheater, and economizer panels, passing through the left and right furnace walls of the boiler, and the support beams are used to connect the superheater tubes, Fixing the hanging pipes or supporting hardware of the reheater pipe and economizer pipe, and providing a vertical beam between the upper and lower main backstays connected to the boiler support steel frame in the part where the support beam penetrates the furnace wall, A support device for a superheater tube or the like configured by connecting the vertical beam and the support beam.