CN204176675U - A kind of New-type boiler water-cooling wall - Google Patents

Abstract

The utility model discloses a novel boiler water-cooled wall, which comprises water-cooled wall tubes, and the water-cooled wall tubes are welded and connected alternately through flat steel and semi-pipe connectors according to a preset ratio to form a whole piece of water-cooled wall. The wall; the semi-pipe connector is made of steel pipe cutting or steel plate folding, which is easy to obtain and low in cost. When the water-cooled wall of the boiler provided by the utility model is expanded by the hot metal of the boiler, the semi-pipe connector will be deformed under the action of the expansion force, which can effectively absorb the expansion force in the horizontal direction of the water-cooled wall, thus solving the problem that the water-cooled wall of the boiler is easy to The problem of cracking under force.

Description

A New Boiler Water Cooling Wall

technical field

The utility model belongs to the technical field of boiler water cooling walls, in particular to a novel boiler water cooling wall.

Background technique

At present, the widely used boiler water wall is mainly composed of water wall tubes (smooth tubes or finned tubes) and flat steel staggered welding, thus forming a whole piece of water wall. As shown in Figure 1, Figure 1 is a schematic diagram of the cross-section of the boiler membrane water-cooled wall in the prior art. The water-cooled wall is made of steel pipes and flat steel interlaced welded, which has good air tightness, is conducive to preventing slagging, and is easy to install Etc. However, in actual use, the expansion of the heated metal of the water-cooled wall of the boiler will cause the water-cooled wall to be subjected to a large expansion force. Since the current water-cooled wall does not have a corresponding force relief device, it is easy to cause the water-cooled wall to crack, seal failure, and dust. And so on, affect the safe production of boilers, and affect the safety and economy of unit operation.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a new type of boiler water-cooled wall, which is used to solve the problems that the boiler water-cooled wall is prone to force cracking and sealing failure under the condition of thermal expansion.

In order to solve the above problems, the utility model adopts the following technical solutions:

A new type of boiler water-cooled wall, including water-cooled wall tubes 2, the water-cooled wall tubes 2 are alternately welded and connected by flat steel 1 and half-pipe connectors 3 according to a preset ratio to form a whole piece of water-cooled wall .

The half-pipe connector 3 is formed by cutting steel pipes or folding steel plates.

The radius of the semi-pipe connector 3 is 5mm-150mm, and the thickness is 1mm-50mm.

The preset ratio, that is, the alternate use ratio of the flat steel 1 and the half-pipe connector 3 is 100:1˜1:1.

When the water-cooled wall of the boiler provided by the utility model is expanded by the hot metal of the boiler, the semi-pipe connector will be deformed under the action of the expansion force, which can effectively absorb the expansion force in the horizontal direction of the water-cooled wall, thus solving the problem that the water-cooled wall of the boiler is easy to The problem of cracking under force.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a water wall of a boiler in the prior art.

Fig. 2 is a schematic cross-sectional view of the new water-cooled wall described in the embodiment of the present invention.

Fig. 3 is a schematic diagram of the structure of the new water-cooled wall described in the embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 2, the utility model is a new type of boiler water-cooled wall, including water-cooled wall tubes 2, and the water-cooled wall tubes 2 are alternately welded by flat steel 1 and half-pipe connectors 3 according to preset ratios. connected to form a whole piece of water wall.

As a preferred embodiment of the present invention, the half-pipe connector 3 is formed by cutting steel pipes or folding steel plates. It is easy to obtain materials and the cost is low.

As a preferred embodiment of the present invention, the radius of the semi-pipe connector 3 is 5mm-150mm, and the thickness is 1mm-50mm.

As a preferred embodiment of the present invention, the preset ratio, that is, the ratio of the flat steel 1 and the half-pipe connector 3 used alternately, is 100:1˜1:1.

In this embodiment, during specific implementation, the flat steel 1 and the half-pipe connector 3 are alternately used in a ratio of 1:1 to weld the water-cooled wall tubes 2 to form a whole water-cooled wall. The semi-pipe connector 3 is cut from a steel pipe (diameter: 32 mm). The thickness and radius of the semi-pipe connector 3 can be adjusted according to the water wall radiation in the boiler furnace and the temperature and pressure of the medium in the water wall. In this embodiment, the water wall pipe diameter is 38 mm, and the wall thickness is 6.5 mm. Type connectors have a radius of 16 mm and a wall thickness of 5 mm.

The utility model is not limited to the above-mentioned embodiments, anyone can draw other various forms of products under the enlightenment of the utility model, but all technical solutions that are identical and similar to the novel features of the application all fall within the scope of the utility model. within the scope of the new protection.

Claims (4)

1. a New-type boiler water-cooling wall, comprise water screen tube (2), it is characterized in that: described water screen tube (2) to be used alternatingly according to preset ratio by band steel (1) and semi-canal type connector (3) and to be welded to connect by water screen tube (2), the water-cooling wall of a composition monoblock.

2. a kind of New-type boiler water-cooling wall according to claim 1, is characterized in that: described semi-canal type connector (3) adopts steel pipe cutting or steel plate flanging to form.

3. a kind of New-type boiler water-cooling wall according to claim 1, is characterized in that: the part radius of described semi-canal type connector (3) is 5mm ~ 150mm, and thickness is 1mm ~ 50mm.

4. a kind of New-type boiler water-cooling wall according to claim 1, is characterized in that: described preset ratio and band steel (1) and semi-canal type connector (3) ratio of being used alternatingly are 100:1 ~ 1:1.