CN2255587Y

CN2255587Y - Double-deck fire-grate type vertical obverse-burning pressure-less boiler

Info

Publication number: CN2255587Y
Application number: CN 96225488
Authority: CN
Inventors: 夏光晖; 夏德政; 夏光臣; 夏光普; 夏峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-15
Filing date: 1996-02-15
Publication date: 1997-06-04
Anticipated expiration: 2006-02-15

Abstract

The utility model relates to an improved vertical forward-combustion boiler with double-layer fire grate. The utility model is composed of a combustion apparatus which is a boiler body, a cast iron fire grate, an upper water pipe fire grate, an upper combustion chamber and a lower combustion chamber, and a heat exchange device which is composed of two circular smoke passages with sandwich structure and different diameters, a group of smoke pipes, a chimney and an upper smoke box. The whole heat exchange device is arranged in a water tank which is composed of a partition plate and the boiler body. The partition plate is arranged on the upper part of the upper combustion chamber.

Description

The vertical pressure-less boiler that just burning of double-layer grate

The utility model is the vertical pressure-less boiler that just burning of a kind of improved double-layer grate, belongs to combustion apparatus.

The vertical pressure-less boiler that just burning of a kind of double-layer grate is disclosed in CN94228568.9, it is to be body wall with heat exchange intermediate water shell type body of heater, be provided with double-layer grate in the combustion chamber, the upper strata is a water pipe furnace grate, lower floor is a casting furnace grate, the upper strata water pipe furnace grate with the combustion chamber be divided into two just burning go up combustion chamber and lower combustion chamber, the outlet of upper combustion chamber is connected with heat-exchanger rig as heating surface.The application is made up of one group of waney suspended-liner-type intercalated water sleeve as the heat-exchanger rig that most preferred embodiment provides, the coaxial heart mutual sheathing of each intercalated water sleeve also is arranged at the top of upper combustion chamber in the body of heater, and be communicated with the water-jacket typ body of heater by upper header and lower end circulating water pipe; Be formed in the circuitous many backhauls flue of annular between each water jacket by the method for opening mouth in the water jacket side.Though this structure has compact conformation, the steel utilization ratio height, heating surface area is big, advantages such as good effect of heat exchange, the difficulty of making maintenance is bigger.

The purpose of this utility model is to provide a kind of vertical improved heat-exchanger rig that is just burning pressure-less boiler of double-layer grate that is applicable to, it is simple in structure, and the manufacturing maintenance is more convenient, and good effect of heat exchange is further enhanced the thermal efficiency of boiler.

Technical solution of the present utility model is, comprise heat exchange intermediate water shell type body of heater, lower floor's casting furnace grate, upper strata water pipe furnace grate, the upper strata water pipe furnace grate is divided into the combustion chamber the vertical pressure-less boiler that just burning of double-layer grate of lower combustion chamber and upper combustion chamber, it is characterized in that, the heat-exchanger rig that is connected with the outlet of upper combustion chamber is made up of annular flue and one group of smoke pipe of two waney sandwiches, and its concrete structure is:

A, diaphragm plate 17 are fixed on the top of upper combustion chamber, constitute water tank 13 with body of heater 5;

The outer ring flue 8 of b, sandwich and interior annular flue 9 coaxial heart suits also are fixedly mounted in the dividing plate 17 top water tanks; The inside-and-outside ring flue has vertical advance mouth 22 and outlet flue 23 in the side of its same side;

C, in the cylinder that interior annular flue forms vertical one group of smoke pipe 14 and chimney 10 arranged; The lower end of smoke pipe is weldingly fixed on the pore on the dividing plate 17 and forms tube plate structure, and its upper end is connected with upper smoke box 11; The upper end of chimney 10 is connected with upper smoke box, lower end closed;

D, have vertical outlet flue 21, and be connected with the mouth 22 that advances of annular flue in the side of chimney 10; The outlet flue 23 of annular flue is connected with the exhanst gas outlet 7 on the body of heater.

In the utility model, the exhanst gas outlet of upper combustion chamber is made up of the lower port of one group of smoke pipe, flue gas enters from one group of smoke pipe lower port, rise to upper smoke box 11 through smoke pipe, enter chimney 10 and downwards from upper smoke box, come out from its side cigarette outlet 21 then, what enter two annular flues advances mouth 22, after annular one week of flue operation, arrive its outlet flue 23, after the exhanst gas outlet 7 on the body of heater arrives chimney 12 emptyings.

The utility model has the advantages that: carry out the structure of just burning because combustion parts has still kept double-layer grate of the prior art, whole advantages that this burning structure had have been kept, can give full play to that just to burn ignition condition superior, coal adaptability is strong, advantages such as grate heat release rate is big, and the volume low capacity is big.Because the utility model has adopted two mutual suits of waney sandwich gall type annular flue, middle vertical structure of arranging one group of smoke pipe makes that whole heat-exchanger rig seems very compact, regular, the little heat exchange area of volume is big.Because whole device is immersed in the water tank, makes its each part, comprises two annular flues, smoke pipe, upper smoke box, chimney and dividing plates, all is the effective heat exchange face, steel utilization ratio is very high.From flue gas flow, as previously mentioned, the high-temperature flue gas that comes out from upper combustion chamber, by from smoke pipe to annular flue outlet, whole cigarette journey is longer, fully heat exchange; And the chimney structure of the vertical installation that is communicated with upper smoke box has been adopted in the transition of flue gas from smoke pipe to annular flue, and flue gas is evenly distributed at heating surface, the nature that flows, and resistance is little, thereby can further improve boiler thermal output.In addition, the heat-exchanger rig of this structure, simple in structure, easy to manufacture, installation and maintenance are all very convenient.

Following accompanying drawing has been described embodiment of the present utility model.

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

Fig. 2 is the A-A cutaway view of Fig. 1.

Below in conjunction with accompanying drawing the utility model is described in detail.Combustion parts of the present utility model still adopts the positive sintering structure of double-layer grate, as shown in FIG., the structures such as exhaust outlet at heat exchange intermediate water shell type body of heater 5, lower floor's casting furnace grate 1, lower combustion chamber 2, water pipe furnace grate 4, upper combustion chamber 6 and feedwater, water outlet, fire door, body of heater top, identical with prior art.Improvement of the present utility model position only is the heat-exchanger rig as heating surface, it has substituted intercalated water sleeve structure of the prior art with interlayer annular flue structure, they all are courage type sandwich, difference is that a water flowing inside becomes the prior art jacket structure for water, a logical flue gas becomes flue structure of the present utility model.8 is the outer ring flue among the figure, and 9 is interior annular flue, the mutual suit of they coaxial hearts, and be fixed in the body of heater above the dividing plate 17.Concrete structure as shown in FIG., the bottom of annular flue is weldingly fixed on the annular ledge 16, annular ledge is fixed on the dividing plate.Annular ledge is made with steel plate in the present embodiment, in order to ensure the circulation of the water around the annular flue, has many outlet passes 15 on bearing, makes it to have good circulating effect.Drive mouth 22 and outlet flue 23 into from the same side of inside and outside annular flue.

In the formed cylinder of interior annular flue, be provided with by smoke pipe, upper smoke box the heating surface that chimney is formed.A branch of smoke pipe is vertically installed, and its bottom is weldingly fixed on the pore on the dividing plate 17, makes it to become tube plate structure, and the upper end is connected with upper smoke box 11.Chimney 10 is fixedly connected on the upper smoke box its lower end closed abreast with smoke pipe.The upper and lower end face of upper smoke box 11 is circular, chimney 10 is fixed on and enters mouth 22 places near the inside-and-outside ring flue on the disc, be connected with upper smoke box is eccentric, all the other places all are covered with smoke pipe 14, as shown in Figure 2, the chimney side has outlet flue 21 near annular flue place, and connects into the flue that is communicated with the mouth 22 that advances of two annular flues.The outlet flue 23 of two annular flues connects into flue with the exhanst gas outlet 7 on the body of heater.In order to make flue gas more even at the mobile time-division cloth of annular flue, the outlet flue on the chimney is positioned at side on the lower side, its side, and shape becomes vertical rectangular mouthful; Smoke inlet and outlet on two annular flues also will be made vertical rectangular mouthful.18,19 is the fire door of last lower combustion chamber among the figure.

Claims

1, the vertical positive burning boiler of a kind of double-layer grate, comprise heat exchange intermediate water shell type body of heater (5), lower floor's casting furnace grate (1), upper strata water pipe furnace grate (4), upper strata water pipe furnace grate (4) is divided into lower combustion chamber (2) and upper combustion chamber (6) with the combustion chamber, it is characterized in that the heat-exchanger rig that is connected with the outlet of upper combustion chamber (6) is made up of annular flue and one group of smoke pipe of two waney sandwiches, its concrete structure is:

A, diaphragm plate (17) are fixed on the top of upper combustion chamber (6), constitute water tank (13) with body of heater (5);

The outer ring flue (8) of b, sandwich and the coaxial heart suit of interior annular flue (9) also are fixedly mounted in the top water tank of dividing plate (17); The inside-and-outside ring flue has vertical advance mouth (22) and outlet flue (23) in the side of its same side;

C, in the cylinder that interior annular flue forms vertical one a group of smoke pipe (14) and the chimney (10) arranged; The lower end of smoke pipe is weldingly fixed on the pore on the dividing plate (17) and forms tube plate structure, and its upper end is connected with upper smoke box (11); The upper end of chimney (10) is connected lower end closed with upper smoke box;

D, have vertical outlet flue (21), and be connected with the mouth (22) that advances of annular flue in the side of chimney (10); The outlet flue (23) of annular flue is connected with the exhanst gas outlet (7) on the body of heater.

2, the vertical positive burning boiler of double-layer grate according to claim 1 is characterized in that being provided with in the lower combustion chamber (2) secondary air channel (3).