CN201034312Y

CN201034312Y - Central re-burning boiler

Info

Publication number: CN201034312Y
Application number: CNU2007200213357U
Authority: CN
Inventors: 王永波; 张世仓
Original assignee: QINGDAO KINGLLI BOILER CO Ltd
Current assignee: QINGDAO KINGLLI BOILER CO Ltd
Priority date: 2007-04-28
Filing date: 2007-04-28
Publication date: 2008-03-12
Anticipated expiration: 2017-04-28

Abstract

The utility model provides a central reverse boiler, consisting of a cylinder, a rear tube plate, an internal furnace, a smoke tube, a rear smoke box, a water supply interface, a steam or hot water outlet, a smoke outlet and a burner. The reverse burning chamber at the front of the internal furnace and the internal furnace comprise a combustion chamber. The front end of the front reverse burning chamber going through the front tube plate of the boiler shell is fixedly connected to the burner. The front end of the smoke tube is communicated with the front reverse burning chamber. The water is distributed in the space of the combustion chamber and the boiler shell. The front reverse burning chamber surrounded by the water and the internal furnace comprise a whole combustion chamber. The function of the front smoke box of the present central reverse boiler is fulfilled by the front reverse burning chamber, which solves the problem of heat resistance and sealing of the front smoke box. The burner is directly connected to the front reverse burning chamber without the arrangement of a fore door cover, which is of simple structure and reliable using performance.

Description

Boiler strile-backs at a kind of center

Technical field

The utility model belongs to the boiler technology field, specifically front smoke box has been carried out improved a kind of center boiler that strile-backs.

Background technology

The front smoke box of boiler is strile-backd in the front tube sheet front in existing center, it is the dry construction that surrounds by front tube sheet, preceding door closure and connecting plate, the boiler front smoke box temperature of pressure combustion can reach 800-1200 ℃, so the heat-resisting and sealing property of front smoke box is all had higher requirement.In addition, the strile-back burner of boiler of existing center directly is fixedly connected on the Qianmen and covers door closure before the burner operation vibrations very easily damage.

Summary of the invention

The utility model improves at the existing center defective that boiler dry construction front smoke box exists of strile-bacing, a kind of center that has the chamber of strile-bacing before wet type structure boiler that strile-backs is provided, strile-back heat-resisting, the sealing difficult problem of boiler front smoke box of existing center solved, solve simultaneously the burner operation vibrations damage before the problem of door closure.

Goal of the invention of the present utility model is to be realized by following technical scheme: boiler strile-backs at a kind of center, comprise cylindrical shell 9, back tube sheet 13, flue 8, smoke pipe 10, back smoke box 14, the feedwater interface, steam or hot water outlet, exhanst gas outlet, burner 1, it is characterized in that being positioned at flue 8 front portions before strile-back chamber 4 and flue 8 form combustion chambers; Before chamber 4 front ends that strile-back pass the front tube sheet 2 of boiler shell, fixedly connected burner 1; The chamber 4 of strile-bacing before the front end of smoke pipe 10 is communicated with; Water distribution is in the space of combustion chamber and boiler shell.

The combustion chamber of forming by flue 8, the preceding chamber 4 of strile-bacing in the shell of forming by front tube sheet 2, cylindrical shell 9, back tube sheet 13, the wet type structure of being surrounded by the boiler water body.The chamber 4 of strile-bacing before the flue gas that returns from flue 8 afterbodys arrives enters smoke pipe 10, fully enters atmosphere by back smoke box 14, exhanst gas outlet, chimney behind the heat convection.Flue 8, the preceding chamber 4 of strile-bacing are surrounded by the boiler water body, solved existing center strile-back the boiler front smoke box heat-resisting, the sealing difficult problem.Strile-back before burner 1 directly the is fixedly connected on front end of chamber 4 can save preceding door closure is set.

Before the chamber 4 of strile-bacing form by the chamber tube sheet 6 that strile-backs, the chamber cylindrical shell 5 that strile-backs, the chamber end socket 3 that strile-backs.

The chamber end socket 3 anterior reducings of strile-bacing pass the front tube sheet 2 of boiler shell, fixedly connected burner 1, and the chamber tube sheet 6 that strile-backs is connected as a single entity with flue 8.Before strile-back chamber 4 and flue 8 be an integral body, rigidity is very strong.

The shower nozzle of burner 1 is in the front portion of preceding strile-bacing chamber 4.Before the chamber 4 of strile-bacing are parts of combustion chamber, be again to return the passage that flue gas enters smoke pipe 10 from flue 8 afterbodys.

See the rear end that firearm is positioned at flue.

The utility model has the advantages that: by the boiler water body surround before the combustion chamber that chamber and flue form a whole of strile-bacing, the strile-back function of front smoke box of boiler of existing center is finished by the chamber of preceding strile-bacing, heat-resisting, the sealing difficult problem of front smoke box are solved.The chamber of strile-bacing before burner directly connects need not to be provided with preceding door closure, and is simple in structure, serviceability is reliable.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the present utility model;

Fig. 2 is the strile-back structural representation of boiler of existing center.

The specific embodiment

In of the present utility model a kind of embodiment shown in Figure 1, shell is made up of front tube sheet 2, cylindrical shell 9, back tube sheet 13, the boiler jacket that is placed on the base 7 has heat-insulation layer 11, is back smoke box 14 between back tube sheet 13 and the heat-insulation layer 11, and exhanst gas outlet is on smoke box 14 tops, back.The combustion chamber is made up of wavy flue 8, the preceding chamber 4 of strile-bacing.Before the chamber 4 of strile-bacing form by the chamber tube sheet 6 that strile-backs, the chamber cylindrical shell 5 that strile-backs, the chamber end socket 3 that strile-backs, the chamber tube sheet 6 that strile-backs is connected as a single entity with flue 8, the chamber end socket 3 anterior reducings of strile-bacing pass the front tube sheet 2 of shell, connect burner 1.Chamber 4 and back smoke box 14 strile-back before smoke pipe 10 is communicated with.The shower nozzle of burner 1 is in the back of preceding strile-bacing 4 front portions, chamber, the chamber end socket 3 that strile-backs.See the center that firearm is placed in furnace gall head 12.Hot water outlet does not illustrate among the figure such as feedwater interface, safety block interface, water level interface on shell top.Fuel oil (gas) mixes the back in the burner hearth internal combustion by burner 1 with air, gas fume after burning is carried out radiation heat transfer by burner hearth heat is passed to water in the boiler, temperature drops to 800-1200 ℃ by about 2600 ℃, flue gas arrival flue 8 afterbodys return preceding combustion chamber 4 and enter smoke pipe 10, flue gas is abundant heat convection in smoke pipe 10, temperature drops to below 250 ℃, enters atmosphere by back smoke box 14, exhanst gas outlet, chimney at last.

Fig. 2 is the strile-back structural representation of boiler of existing center, and front smoke box 16 is in front tube sheet 2 fronts, is the dry construction that is surrounded by front tube sheet 2, preceding door closure 15 and connecting plate 17.Burner 1 is installed on the preceding door closure 15.Existing center strile-back boiler exist heat-resisting, the sealing of front smoke box 16 and burner 1 work fragile before the problem of door closure 15.

The combustion chamber that chamber 4 and flue 8 form a whole of strile-bacing before of the present utility model, by the wet type structure that the boiler water body surrounds, the strile-back function of front smoke box 16 of boiler of existing center is finished by the chamber 4 of preceding strile-bacing, and heat-resisting, the sealing difficult problem of front smoke box 16 are solved.Strile-back before burner 1 directly the connects chamber end socket 3 that strile-backs of chamber 4, door closure 15 before need not to be provided with, simple in structure, serviceability is reliable.

Claims

1. boiler strile-backs at a center, comprise cylindrical shell (9), back tube sheet (13), flue (8), smoke pipe (10), back smoke box (14), the feedwater interface, steam or hot water outlet, exhanst gas outlet, burner (1), it is characterized in that being positioned at flue (8) anterior before strile-back chamber (4) and flue (8) composition combustion chamber; Before chamber (4) front end that strile-backs pass the front tube sheet (2) of boiler shell, fixedly connected burner (1); The chamber (4) of strile-bacing before the front end of smoke pipe (10) is communicated with; Water distribution is in the space of combustion chamber and boiler shell.

2. a kind of center according to claim 1 boiler that strile-backs, the chamber (4) of strile-bacing before it is characterized in that is made up of the chamber tube sheet (6) that strile-backs, the chamber cylindrical shell (5) that strile-backs, the chamber end socket (3) that strile-backs.

3. a kind of center according to claim 2 boiler that strile-backs, the anterior reducing of chamber end socket (3) that it is characterized in that strile-bacing passes the front tube sheet (2) of boiler shell, fixedly connected burner (1), the chamber tube sheet (6) that strile-backs is connected as a single entity with flue (8).

4. according to claim 1 or the 3 described a kind of centers boiler that strile-backs, the shower nozzle that it is characterized in that burner (1) is in the front portion of preceding strile-bacing chamber (4).

5. a kind of center according to claim 1 boiler that strile-backs is characterized in that there is the sight firearm rear end of flue (8).