CN204165027U - Crane system is propped up in a kind of boiler wall of variable cross-section tower boiler - Google Patents

Abstract

Crane system is propped up in the boiler wall that the utility model discloses a kind of variable cross-section tower boiler, tower boiler is by other boiler portions of support (1) and the boiler wall (2) be suspended on support (1) and inside thereof, assembly forms, support (1) comprises bracket upright post (1a) and rack beam (1b), boiler wall (2) comprises top, boiler wall (2a), bottom bottom, boiler wall (2b) and boiler wall (2c), described variable cross-section tower boiler is be one or more surfaces the alternation of cross-section of burner hearth, it is characterized in that: bottom, boiler wall (2b) is connected with swing pipe (3), and by swing pipe (3) suspention to rack beam (1b), swing pipe (3) is drawn between top, boiler wall (2a) and bottom, boiler wall (2b), certain media in boiler wall (2) enters boiler wall (2) again after swing pipe (3) flows to boiler top, and swing pipe (3) and boiler wall (2) belong to a water-cooling system together, boiler wall (2) is hung by rack beam (1b).

Description

Crane system is propped up in a kind of boiler wall of variable cross-section tower boiler

Technical field

Crane system is propped up in the boiler wall that the utility model relates to a kind of variable cross-section tower boiler.

Background technology

Weight be hung with multiple method, common practices utilizes suspension rod or spring to add suspension rod to be fixed on steel construction, directly to prop up lift heavy thing.This method for hang weight expansion displacement be zero or expansion displacement little when feasible, and each independent weight needs independent suspension rod, spring assembly.For power station tower boiler, institute's hanging part part can produce the excessive problem of displacement due to thermal expansion metal, and institute's lift heavy amount is very large, props up to hang generally cannot meet safety requirements by conventional method, namely enablely meets, and also needs to pay larger economic cost.

To the boiler using easy contamination, slagging scorification ature of coal (coal as eastern in standard, brown coal etc.), usually need lower hearth (i.e. combustion chamber) to amplify, stain to slow down boiler, control boiler scaling.In conventional tower boiler, on burner hearth, lower section is constant, and the weight of boiler wall is directly hung on large girder by a large amount of suspension rod of furnace roof, there is not upper lower hearth and to expand inconsistent problem.In variable cross-section tower boiler, upper lower hearth must prop up respectively and hang, and the weight on top, boiler wall is still directly hung on large girder by a large amount of suspension rod of furnace roof.But there is larger thermal expansion curve in bottom, boiler wall, directly hangs cannot meet the demands on large girder with suspension rod; Simultaneously due to bottom, boiler wall weight and need the weight of carrying very large, boiler space is also limited, cannot realize hanging of bottom, boiler wall by the mode that spring adds suspension rod.Therefore, a kind of good is hung mode, extremely crucial to the safety of structure of variable cross-section tower boiler, economy.

The tradition of conventional tower boiler is propped up the form of hanging and is illustrated in fig. 1 shown below:

Conventional tower boiler burner hearth, primarily of other portions, the assembly composition of support 1 and the boiler wall 2 be suspended on support 1 and inside thereof; Boiler wall 2 comprises 2c bottom top, boiler wall 2a, bottom, boiler wall 2b and boiler wall; The gas passage sectional area ratio that top, boiler wall 2a and bottom, boiler wall 2b surrounds is 1; The weight of boiler wall 2 is hung on support 1b by suspension rod 3a.

Contrast the application according to spring hanger in the variable cross-section type of furnace again.In variable cross-section tower boiler, conventional springs suspension bracket props up the form of hanging as shown in Figure 2:

This kind of variable cross-section boiler furnace, primarily of other portions, the assembly composition of support 1 and the boiler wall 2 be suspended on support 1 and inside thereof; Boiler wall 2 comprises 2c bottom top, boiler wall 2a, bottom, boiler wall 2b and boiler wall; The gas passage sectional area ratio that top, boiler wall 2a and bottom, boiler wall 2b surrounds is less than 1; The weight of bottom, boiler wall 2b is hung on firm beam 4 or furnace roof support 1b by spring hanger link 3a;

The sus-pension of this kind of form; suspension rod is rigid member, can not solve the displacement problems of too (usually can more than 100mm) that thermal expansion produces, simultaneously due to single suspension rod carrying load comparatively large (usually can more than 20 tons); bring difficulty also can to the type selecting of spring, even cannot select spring.

Utility model content

The utility model is the above shortcoming existed to overcome prior art, and the boiler wall that the utility model provides a kind of variable cross-section tower boiler is propped up and hung structure, and scheme is as follows:

Described tower boiler is made up of other boiler portions of support 1 and the boiler wall 2 be suspended on support 1 and inside thereof, assembly, support 1 comprises bracket upright post 1a and rack beam 1b, boiler wall 2 comprises 2c bottom top, boiler wall 2a, bottom, boiler wall 2b and boiler wall, described variable cross-section tower boiler is be one or more surfaces the alternation of cross-section of burner hearth, and the gas passage sectional area ratio that top, boiler wall 2a and bottom, boiler wall 2b surrounds is 0.6 ~ 1; It is characterized in that:

Bottom, boiler wall 2b is connected with swing pipe 3, and suspends in midair to rack beam 1b by swing pipe 3;

Swing pipe 3 is drawn between top, boiler wall 2a and bottom, boiler wall 2b;

Certain media in boiler wall 2 flows to behind boiler top from swing pipe 3 and enters boiler wall 2 again, and swing pipe 3 and boiler wall 2 belong to a boiler circuit together;

Boiler wall 2 is propped up by rack beam 1b and is hung.

The pipe radical of swing pipe (3) accounts for 1% ~ 10% of all boiler walls pipe radical;

In the pipe of swing pipe (3), the ratio of circulation medium accounts for 5% ~ 40% of circulation medium in the pipe of all boiler walls;

Swing pipe (3) apart from boiler wall (2) distance be 0.1A ~ 0.4A(wherein, A is the cross-sectional length on top, boiler wall);

Swing pipe (3) upper end is hung by rack beam (1b).

Utility model principle: hearth wall bottom is connected with swing pipe, by on swing pipe suspention furnace roof rack beam, circulate in swing pipe the medium come from boiler wall simultaneously, such structure allows overhung construction can substantially realize synchronous expansion with boiler wall, solves that the suspension bracket rigidity that large load and Large travel range cause is excessive, spring hanger type selecting difficulty and the problem such as arrangement space is compact.

In the utility model, because medium temperature, the pressure and other parameters of circulation in the medium of circulation in swing pipe 3 and boiler wall 2 are close, simultaneously swing pipe 3 design of material of selecting thermal coefficient of expansion identical or close with boiler wall 2, ensures that swing pipe 3 and boiler wall 2 can keep synchronous expansion substantially under any state.So, just make swing pipe 3 and boiler wall 2 relative displacement less, avoid the risk because of the excessive existence of hanger device rigidity occurred in traditional support hanger structure.

Beneficial effect:

1) solve in variable cross-section tower boiler due to the temperature difference cause greatly because of thermal expansion metal displacement difference, and the problem being difficult to hang produced;

2) a large amount of suspension and support devices and installing space is saved;

3) risk that the rigidity of traditional support hanger structure existence is excessive is avoided.

Accompanying drawing explanation

Fig. 1 is that the tradition of conventional tower boiler is propped up and hung form figure.

Fig. 2 is that in variable cross-section tower boiler, conventional springs suspension bracket props up and hangs form figure.

Fig. 3 is the sus-pension figure of the utility model boiler wall.

Fig. 4 is the side view of Fig. 3.

Detailed description of the invention

For making the utility model become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.

In a kind of tower boiler, burner hearth adopts the layout of variable cross-section, and the sus-pension of boiler wall as shown in Figure 3 and Figure 4.The utility model provides a kind of novel boiler wall sus-pension, effectively can solve the suspention difficulty that boiler hot expansion displacement difference causes, in turn save a large amount of suspension and support devices and installing space, provide a kind of safety, economic and simple boiler wall sus-pension.

The boiler furnace of variable cross-section, primarily of other boiler portions, the assembly composition of support (1) and the boiler wall (2) be suspended on support (1) and inside thereof, support (1) comprises bracket upright post (1a) and rack beam (1b), boiler wall (2) comprises bottom top, boiler wall (2a), bottom, boiler wall (2b) and boiler wall (2c), variable cross-section layout can be one or more surfaces the alternation of cross-section of burner hearth, and the gas passage sectional area ratio that top, boiler wall (2a) and bottom, boiler wall (2b) surrounds is 0.6 ~ 1;

Bottom, boiler wall (2b) is connected with swing pipe (3), and by swing pipe (3) suspention to rack beam (1b);

Swing pipe (3) is drawn between top, boiler wall (2a) and bottom, boiler wall (2b);

Certain media in boiler wall (2) enters boiler wall (2) again after swing pipe (3) flows to boiler top, and swing pipe (3) and boiler wall (2) belong to a boiler circuit together;

Boiler wall (2) is hung by rack beam (1b);

The pipe radical of swing pipe (3) accounts for 1% ~ 10% of all boiler walls pipe radical;

In the pipe of swing pipe (3), the ratio of circulation medium accounts for 5% ~ 40% of circulation medium in the pipe of all boiler walls;

Swing pipe (3) is 0.1A ~ 0.4A apart from the distance of boiler wall (2), and wherein, A is the cross-sectional length on top, boiler wall);

Swing pipe (3) upper end is hung by rack beam (1b);

The utility model props up the mode of hanging and is mainly applicable to big-and-middle-sized variable cross-section tower boiler.

Claims (2)

1. crane system is propped up in the boiler wall of a variable cross-section tower boiler, described tower boiler is by other boiler portions of support (1) and the boiler wall (2) be suspended on support (1) and inside thereof, assembly forms, support (1) comprises bracket upright post (1a) and rack beam (1b), boiler wall (2) comprises top, boiler wall (2a), bottom bottom, boiler wall (2b) and boiler wall (2c), described variable cross-section tower boiler is be one or more surfaces the alternation of cross-section of burner hearth, the gas passage sectional area ratio that top, boiler wall (2a) and bottom, boiler wall (2b) surround is 0.6 ~ 1, it is characterized in that:

Bottom, boiler wall (2b) is connected with swing pipe (3), and by swing pipe (3) suspention to rack beam (1b);

Swing pipe (3) is drawn between top, boiler wall (2a) and bottom, boiler wall (2b);

Certain media in boiler wall (2) enters boiler wall (2) again after swing pipe (3) flows to boiler top, and swing pipe (3) and boiler wall (2) belong to a water-cooling system together;

Boiler wall (2) is hung by rack beam (1b).

2. crane system is propped up in the boiler wall of a kind of variable cross-section tower boiler as claimed in claim 1, it is characterized in that:

The pipe radical of swing pipe (3) accounts for 1% ~ 10% of all boiler walls pipe radical;

In the pipe of swing pipe (3), the ratio of circulation medium accounts for 5% ~ 40% of circulation medium in the pipe of all boiler walls;

Swing pipe (3) is 0.1A ~ 0.4A apart from the distance of boiler wall (2), and wherein, A is the cross-sectional length on top, boiler wall;

Swing pipe (3) upper end is hung by rack beam (1b).