CN216591665U

CN216591665U - Tube bundle device with bent ears

Info

Publication number: CN216591665U
Application number: CN202123367310.1U
Authority: CN
Inventors: 潘宇峰; 徐传香; 强逸; 王伟星
Original assignee: Jiangsu Taihu Boiler Co Ltd
Current assignee: Jiangsu Taihu Boiler Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-24
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a curved tube bank device of ear aims at providing the curved tube bank device of ear that effectively places the pipe and splits, and its technical scheme main points are, including the collection case, the collection case top is equipped with the siphunculus, still be equipped with bending apparatus between collection case and the siphunculus, bending apparatus is including the export that is located collection case top and is equipped with, be located the return bend that the exit was equipped with, the return bend includes the first pipeline with exit connection and the second pipeline of being connected with the siphunculus, first pipeline both sides still are equipped with inside recess.

Description

Tube bundle device with bent ears

Technical Field

The utility model relates to a boiler equipment field, concretely relates to curved tube bank device of ear.

Background

So-called boiler banks are dense banks arranged between upper and lower drums. The tube bundle and the boiler barrel can be expanded or welded, the mixture of water and steam and water in the tube naturally and circularly flows, the tube with strong heating is an ascending tube, the tube with weak heating is a descending tube, a flue is usually divided into a plurality of flows by refractory bricks or cast iron plates in the tube bundle, and meanwhile, the flue gas circulation cross section of each flow is gradually reduced along with the reduction of the flue gas temperature so as to keep the high enough flue gas flow velocity.

In a boiler system, a superheater/evaporator header has the function of collecting steam in a superheater/evaporator heating surface tube bundle and conveying the steam to a steam main pipe through a pipeline, but due to the fluctuation of the inlet smoke temperature of the superheater/evaporator, the expansion and contraction problems of the superheater/evaporator header are particularly prominent, and the pulling and cracking conditions of welded junctions of connecting tube bundles at two ends of the header are frequent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a curved tube bank device of ear, it has carried out the improved design to above-mentioned phenomenon, has avoided the crater of connecting tube bank to draw the advantage of splitting the problem.

The above technical object of the present invention can be achieved by the following technical solutions:

the utility model provides a curved tube bank device of ear, includes the collection case, the collection case top is equipped with the siphunculus, still be equipped with bending apparatus between collection case and the siphunculus, bending apparatus is including the export that is located collection case top and is equipped with, the return bend that is located the exit and is equipped with, the return bend includes the first pipeline with exit linkage and the second pipeline of being connected with the siphunculus, first pipeline both sides still are equipped with inside recess.

Further setting: first pipeline bottom still is equipped with welding set, welding set is including being located the folded plate that first pipeline bottom was equipped with and being located the welding plate that is equipped with on the folded plate.

Further setting: elastic sealing pastes are further arranged at the two ends of the bending device.

Further setting: and an elastic connecting strip is arranged between the inner walls of the grooves of the first pipeline.

Further setting: the welding plate is fixedly connected with the inner wall of the outlet.

To sum up, the utility model discloses following beneficial effect has:

1. the bent pipe ear bending structure eliminates the expansion amount of the end part of the header;

2. the butt joint quality of the pipes is ensured by the staggered welding of the pipes.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic view of a tube bundle device with ear bends.

In the figure, 1, a header; 2. pipe passing; 3. a bending device; 31. an outlet; 32. bending the pipe; 33. a first conduit; 34. a second conduit; 35. a groove; 4. a welding device; 5. folding the plate; 6. welding the plate; 7. elastic sealing paste; 8. an elastic connecting strip.

Detailed Description

The following describes the embodiments of the present invention with reference to the accompanying drawings.

The utility model adopts the technical proposal that:

the utility model provides a curved tube bank device of ear, as shown in fig. 1, including collection case 1, collection case 1 top is equipped with siphunculus 2, still be equipped with bending apparatus 3 between collection case 1 and the siphunculus 2, bending apparatus 3 is including lieing in the export 31 that collection case 1 top was equipped with, 31 department is equipped with return bend 32 in the export, return bend 32 includes the first pipeline 33 of being connected with export 31 and the second pipeline 34 of being connected with siphunculus 2, still be equipped with inside recess 35 in first pipeline 33 both sides, first pipeline 33 bottom still is equipped with welding set 4, and welding set 4 is including lieing in folded plate 5 that first pipeline 33 bottom was equipped with, welding plate 6 that is equipped with on folded plate 5, 3 both ends of bending apparatus still are equipped with elastic sealing paste 7, and first pipeline 33 lies in still is equipped with elastic connecting strip 8 between the recess 35 inner wall, welding plate 6 and export 31 inner wall fixed connection.

The main working principle is as follows: when the temperature fluctuation of the flue gas is strong, the end part of the header 1 can generate the expansion and contraction phenomenon due to the thermal expansion of the header 1, the pulling crack phenomenon is finally generated at the welding part of the bent pipe 32 at the end part of the header 1 and the header 1, the boiler shutdown maintenance of the boiler is finally caused, the pipe end of the conventional structure is of a flush structure, the welding space is slightly narrow, and the welding quality of the pipe is not easy to guarantee. The design is composed of a header 1, a bending device 3, a first pipeline 33 and a second pipeline 34. It is comparatively strong when the flue gas temperature fluctuation, 1 tip of collection case produces the harmomegathus phenomenon, the inflation volume that collection case 1 produced is eliminated by recess 35 on the first pipeline 33, the production of crater pull crack problem has been stopped, folded plate 5 that is equipped with simultaneously can effectual increase elasticity, thereby protect the release of whole energy, stable structure, and the effect of welded plate 6 can effectual increase welding space, elastic connection strip 8 that is equipped with simultaneously can be with the effectual energy that releases replys original position after warping, increase life.

The above is the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and all the simple modifications, equivalent changes and modifications made by the technical entity of the present invention to the above embodiments all belong to the scope of the technical solution of the present invention.

Claims

1. A curved tube bank device of ear, includes header (1), its characterized in that: collection case (1) top is equipped with siphunculus (2), still be equipped with bending apparatus (3) between collection case (1) and siphunculus (2), bending apparatus (3) are including export (31) that are located collection case (1) top and be equipped with, be located return bend (32) that export (31) department was equipped with, return bend (32) are including first pipeline (33) be connected with export (31) and second pipeline (34) be connected with siphunculus (2), first pipeline (33) both sides still are equipped with inside recess (35).

2. An earring tube bundle device according to claim 1, wherein: first pipeline (33) bottom still is equipped with welding set (4), welding set (4) are including being located folded plate (5) that first pipeline (33) bottom was equipped with and being located welding plate (6) that are equipped with on folded plate (5).

3. An earring tube bundle device according to claim 2, wherein: and elastic sealing pastes (7) are also arranged at the two ends of the bending device (3).

4. An earring tube bundle device according to claim 3, wherein: and an elastic connecting strip (8) is also arranged between the inner walls of the grooves (35) of the first pipeline (33).

5. An earring tube bundle device according to claim 4, wherein: the welding plate (6) is fixedly connected with the inner wall of the outlet (31).