CN202125112U

CN202125112U - Expansion joint for suspended steel inner barrel chimney

Info

Publication number: CN202125112U
Application number: CN2011201904486U
Authority: CN
Inventors: 崔传宗; 章卫松
Original assignee: State Nuclear Electric Power Planning Design and Research Institute Co Ltd
Current assignee: State Nuclear Electric Power Planning Design and Research Institute Co Ltd
Priority date: 2011-06-08
Filing date: 2011-06-08
Publication date: 2012-01-25
Anticipated expiration: 2021-06-08

Abstract

The utility model discloses an expansion joint for suspended steel inner barrel chimney, and belongs to the field of thermal power generation. The expansion joint is disposed between two steel inner barrels and is provided with two metal plates and a rubber belt; the rubber belt is clamped between the two metal plates; and the both ends of each of the two metal plates are fixed to the steel inner barrels. The expansion joint adopts a structure that a rubber belt is clamped between two metal plates; in the expansion joint, the metal plate on the outer layer can effectively resist corrosion of acid solution in the steel inner barrel, and the rubber plate has good elasticity, so that relative free deformation between the steel inner barrels at the upper and lower ends of the expansion joint can be ensured, and the expansion joint has good lasting quality in high temperature high corrosion environment.

Description

A kind of expansion joint of suspension type Steel Inner Core of Chimney

Technical field

The utility model relates to the thermal power generation field, particularly a kind of expansion joint of suspension type Steel Inner Core of Chimney.

Background technology

At present, between the two joint Steel Inner Core of Chimney of steam power station segmentation suspension expansion joint need be set, cause the corrosion of chimney structure in case the leak-stopping cigarette leaks.Existing expansion joint adopts acidproof heat-proof modified silicon rubber band, has elasticity and decay resistance preferably.But, be easy to destroy because expansion joint repeatedly is out of shape the changing of the relative positions in chimney run duration experience, and elastomeric material is very easily aging under the environment of high temperature highly corrosive, generally is no more than 1 year the fracture gas leak phenomenon promptly to occur, causes the corrosion of steel inner cylinder steel.

So need a kind of favorable elasticity of design, the expansion joint that under the high corrosive environment of high temperature, has the good durability ability.

The utility model content

Expansion joint is prone to wear out in the prior art in order to overcome, the problem that the life-span that causes is short, and the utility model embodiment provides a kind of expansion joint of suspension type Steel Inner Core of Chimney.Said technical scheme is following:

A kind of expansion joint of suspension type Steel Inner Core of Chimney; Be arranged between the two joint steel inner cylinders; Said expansion joint comprises double layer of metal plate and one deck rubber strip, and said rubber strip is clipped between the said double layer of metal plate, and the two ends of said double layer of metal plate are separately fixed on the said two joint steel inner cylinders.

Particularly, as preferably, said expansion joint is fixed on the outside of said two joint steel inner cylinders.

Further; In order effectively to prevent the flue gas corrosion steel inner cylinder; Said expansion joint also comprises the metal bound edge separately that is separately positioned on said two joint steel inner cylinder edges; Said metal edges separately is along the interior lateral buckling and the coating of the said steel inner cylinder separately in lateral of said steel inner cylinder separately, and said metal bound edge separately is fixedly connected with the outside of said steel inner cylinder separately and the inboard of said steel inner cylinder separately respectively.

Particularly, as preferably, described metal sheet and said metal bound edge are processed by titanium.

Particularly, as preferably, said rubber strip is heat resistance modified silicone rubber belt.

Particularly, as preferably, the thickness of said rubber strip is 8mm.

The beneficial effect of the technical scheme that the utility model embodiment provides is: compare prior art; The expansion joint of the utility model has adopted the structure of double layer of metal plate therebetween one deck rubber strip, and wherein, outer field metal sheet can effectively be resisted the corrosion of steel inner cylinder acid solution; Rubber strip has better elastic; Can guarantee relative Free Transform between the expansion joint upper and lower side steel inner cylinder, make the utility model under the high corrosive environment of high temperature, to have the good durability ability.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the utility model embodiment; To do one to the accompanying drawing that uses among the embodiment below introduces simply; Obviously, below listed accompanying drawing only be some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the sectional view of the expansion joint of the said suspension type Steel Inner Core of Chimney of the utility model embodiment;

Fig. 2 is the partial enlarged drawing of A among Fig. 1;

Fig. 3 is the exploded view of part among Fig. 2.

In the accompanying drawing, the component list of each label representative is following:

10 steel inner cylinders, the outside of 11 steel inner cylinders, the inboard of 12 steel inner cylinders,

20 expansion joints, 21 first floor metal sheets, 22 second layer metal plates, 23 rubber strips,

30 metal bound edges.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model embodiment is done to describe in detail further below.

As shown in Figure 1, the expansion joint of the said a kind of suspension type Steel Inner Core of Chimney of the utility model embodiment is arranged between the two joint steel inner cylinders 10; Referring to Fig. 2; Said expansion joint 20 comprises the double layer of metal plate, i.e. first floor metal sheet 21 and second layer metal plate 22, and one deck rubber strip 23; Said rubber strip 23 is clipped between said first floor metal sheet 21 and the second layer metal plate 22, and the two ends of said first floor metal sheet 21 and second layer metal plate 22 are separately fixed on the said two joint steel inner cylinders 10.

As shown in Figure 2; The expansion joint 20 of the utility model has adopted the structure of double layer of metal plate therebetween one deck rubber strip 23, and wherein, two-layer metal sheet is the corrosion that outer metal plates can effectively be resisted steel inner cylinder 10 acid solutions; Rubber strip 23 has better elastic; Can guarantee relative Free Transform between the expansion joint 20 upper and lower side steel inner cylinders 10, make the utility model under the high corrosive environment of high temperature, to have the good durability ability.

Particularly, as shown in Figure 2 as preferably, said rubber strip 23 is heat resistance modified silicone rubber belt, and the thickness of said rubber strip 23 is preferably 8mm.Said double layer of metal plate is first floor metal sheet 21 and second layer metal plate 22, and they all preferentially select for use titanium to process, and thickness is preferably 1.2mm.Particularly, as preferably, said expansion joint 20 is fixed on the outside of said steel inner cylinder 10, makes construction complete in the outside 11 of steel inner cylinder, has reduced difficulty of construction, so be easy to site operation.

Further; In order effectively to prevent flue gas corrosion steel inner cylinder 10; As shown in Figure 2; Said expansion joint 20 also comprises the metal bound edge 30 separately that is separately positioned on said two joint steel inner cylinders 10 edges, and said metal edges separately bends and coats to the inboard 12 of said steel inner cylinder separately along the outside 11 of said steel inner cylinder separately, and said metal bound edge 30 separately is fixedly connected with the outside 11 of said steel inner cylinder separately and the inboard 12 of said steel inner cylinder separately respectively.Particularly, as shown in Figure 2 as preferably, said metal bound edge 30 is processed by titanium, and thickness is preferably 1.2mm.

As shown in Figure 3, the manufacturing process of metal bound edge 30, at first on expansion joint 20 the hypomere steel inner cylinder outside with the fixing layer of metal plate of stainless steel hobnail.After fixing hobnail outside ailhead is polished, concordant with metal sheet, metal-sheet edges and steel inner cylinder 10 barrel full welds; Then the metal sheet free end is rolled over toward steel inner cylinder is inboard, metal-sheet edges and steel inner cylinder 10 barrel full welds finally form metal bound edge 30.Wherein, after having beaten hobnail, the metal sheet bending is come to cover hobnail hole place, can prevent effectively that flue gas from corroding steel inner cylinder 10 at the hobnail place.

The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims

1. the expansion joint of a suspension type Steel Inner Core of Chimney; Be arranged between the two joint steel inner cylinders; It is characterized in that; Said expansion joint comprises double layer of metal plate and one deck rubber strip, and said rubber strip is clipped between the said double layer of metal plate, and the two ends of said double layer of metal plate are separately fixed on the said two joint steel inner cylinders.

2. expansion joint as claimed in claim 1 is characterized in that, said expansion joint is fixed on the outside of said two joint steel inner cylinders.

3. expansion joint as claimed in claim 1; It is characterized in that; Said expansion joint also comprises the metal bound edge separately that is separately positioned on said two joint steel inner cylinder edges; Said metal edges separately is along the interior lateral buckling and the coating of the said steel inner cylinder separately in lateral of said steel inner cylinder separately, and said metal bound edge separately is fixedly connected with the outside of said steel inner cylinder separately and the inboard of said steel inner cylinder separately respectively.

4. like the described expansion joint of each claim of claim 1-3, it is characterized in that described metal sheet and said metal bound edge are processed by titanium.

5. expansion joint as claimed in claim 4 is characterized in that, said rubber strip is heat resistance modified silicone rubber belt.

6. expansion joint as claimed in claim 5 is characterized in that, the thickness of said rubber strip is 8mm.