CN2517978Y

CN2517978Y - Cooled rotary movement arch combustion chamber

Info

Publication number: CN2517978Y
Application number: CN 01274607
Authority: CN
Inventors: 李靖宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-26
Filing date: 2001-12-26
Publication date: 2002-10-23
Anticipated expiration: 2011-12-26

Abstract

The utility model relates to a cooling revolving moving arc combustion chamber. The invention is characterized in that a revolving moving arc is additionally arranged between a front arc and a rear arc, a hollow steel pipe is used as the frame of a revolving moving arc, cooling water can be charged into the hollow steel pipe, the hollow steel pipe is wrapped with fire-proof material, the main rod of the revolving moving arc extends out of the wall of a furnace, and the revolving moving arc can revolve with the main rod as the central axle. In the condition that the furnace is not shut down, the utility model can directly control the reasonable fume distribution from the outside of the furnace wall, enhances the combustion efficiency, and avoids ash accumulation on the arcs.

Description

Cooling rotary moveable arch combustion chamber

Technical field

The utility model relates to a kind of combustion apparatus that uses the solid combustion material, is suitable for the types of layers combusting boiler and comes and goes the row's of pushing away boiler.

Background technology

At traditional evaporation capacity is the deficiency of 1 ton/hour-4 tons/hour and 6.5 tons/hour-20 tons/hour grate firing boiler, and Chinese patent 92212954.7 9221295.3 has proposed the chamber design of a kind of two preceding two rear arches and cooling truss hogging.This design is down arch and a hogging before setting up between the face arch of traditional burner hearth and rear arch, by increasing the area coverage of arch in burner hearth, strengthens the reflex of arch, improves ignition temperature and obtains higher efficiency of combustion.Weak point is: preceding arch and the easy dust stratification in cooling truss hogging device top down set up, and cause some water wall surfaces to be hidden by the excessive dust stratification of hogback, cause unnecessary boiler heat-transfer loss.On the other hand, the regulative mode of chimney arch is to rely on manually will cover firebrick and put up on the reservation burner between arch and the arch, and the length that prolongs arch increases the area coverage of chimney arch on fire grate, the raising ignition temperature.But because the type of furnace is numerous, width differs, and the lid firebrick is heavier, and under the situation of not blowing out, manually-operated is difficulty relatively.

Summary of the invention

Technical problem to be solved in the utility model is: the dust stratification that reduces and avoid encircleing, under the prerequisite of not interrupting the normal operation of boiler, manipulating the adjusting flue gas outside the furnace wall directly reasonably distributes, the dust stratification that reduces and avoid encircleing, reduce excess air coefficient, improve efficiency of combustion, and propose a kind of more perfect cooling rotary moveable arch combustion chamber.

The technical solution adopted in the utility model is: this cooling rotary moveable arch combustion chamber has face arch and rear arch, between face arch and rear arch, have additional the rotary moveable arch, this rotary moveable arch is a skeleton with the hollow steel pipe, can feed cooling water in the hollow steel pipe, hollow steel pipe outer wrapping refractory material, the mobile jib of rotary moveable arch stretches out outside the furnace wall, and the rotary moveable arch can be that central shaft rotates with the mobile jib.

A kind of more perfect combustion chamber that the utility model proposed, be that the saturating burner that forms between arch and arch is set up a kind of cooling rotary moveable arch device that can rotate freely in 0-360 ° of scope, actual conditions such as the difference of the visual coal of operating personnel and boiler operatiopn load variations, do not interrupt not influencing boiler operatiopn yet, directly outside the furnace wall, handle cooling rotary moveable arch device, rotate its angle, the variation of flue gas flow between the regulation and control burner, flue gas is formed between burner reasonably distribute, improve efficiency of combustion.And, in the rotation process of cooling rotary moveable arch, can also remove dust stratification on the hogback automatically because of the upset of its wide-angle, avoid unnecessary boiler heat-transfer loss.The utility model is reasonable in design, and is simple in structure, easy to operate, and technical performance is good.

Description of drawings

Fig. 1 is the vertical schematic diagram of the utility model structure

Fig. 2 is the A-A profile of Fig. 1

Fig. 3 is the B-B profile of Fig. 1

Fig. 4 vertically illustrates to quarrel for the utility model embodiment 1

Fig. 5 is the C-C profile of Fig. 4

Fig. 6 is the D-D profile of Fig. 4

Fig. 7 is the utility model embodiment 2 vertical schematic diagrames.

The specific embodiment

Referring to Fig. 1, traditional grate firing boiler generally is made up of 1 face arch 1 and 1 rear arch 5, (contain 1) in the hogging 2 of fire grate horizontal level projected length greater than 20mm setting up between face arch and the rear arch more than 1, the vertical range on its hogging 2 bottom surface extreme lower positions and fire grate 6 surfaces is greater than 150nm.

Referring to Fig. 2, hogging 2 is to be skeleton with the hollow steel pipe, and the outer wrapping refractory material is made, and is middle high, and the fold-type truss structure that two ends are low helps firepower cooling blowdown in the middle part is concentrated and managed.This truss hogging has fold-type mobile jib 8 to cross out the furnace wall.Support the weight of hogging as the hold-down support of hogging 2, the skeleton of above-mentioned hogging 2 fold-type truss is that hollow steel pipe is made, and can feed the cooling cooling water circulation.Cooling water enters in the fold-type truss 2 from water inlet 7, and recirculated cooling water is discharged from delivery port 9, to reduce the temperature of hogging 2, prevents that Yin Wendu is too high and is burnt out.

Referring to 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, between the saturating burner that arch becomes with arch, partly (or whole) set up and (contain 1) more than 1 rotary moveable encircles 3.The structure of this rotary moveable arch 3 as shown in Figure 3, with the hollow steel pipe is skeleton, the outer wrapping refractory material is made, this rotary moveable arch 3 has mobile jib 4 horizontal passing in the hollow bushing 10 that is embedded in the furnace wall to stretch out outside the furnace wall, and make stressed bearing to be embedded in the furnace wall hollow bushing, support the weight of whole rotary moveable arch 3.Internal diameter in the pre-buried hollow bushing 10 is greater than the external diameter of mobile jib 4, and pre-buried sufficient space can guarantee that rotary moveable arch 3 can do clockwise or rotate counterclockwise 0～360 ° (also can set rotational angle) with central shaft 4.The vertical range of mobile jib 4 external diameter extreme lower positions and stoker surface is greater than 100mm, because rotary moveable arch 3 is to be that skeleton is made with the hollow steel pipe, can feed cooling water in the pipe enters in the steelframe of rotary moveable arch 3 from import 12, after the circulation cooling, discharge by outlet 11, to reduce the donor temperature of rotary moveable arch 3, the reason temperature is too high and burnt out to make it.

The type of furnace that pin is different, different cloth arch mode and different burner hearth spans, the rotary moveable arch can be made into " plate " " flap type " (as shown in Figure 1) " T-shaped template " (as shown in Figure 4) " cross template " (as shown in Figure 7).

Embodiment 1 of the present utility model and embodiment 2 is not establish hogging with aforesaid its main distinction of Fig. 1 structure, and embodiment 1 is equipped with 2 cooling rotary moveables arches, and embodiment 2 installs 1 cooling rotary moveable arch in the combustion chamber of reciprocal cant boiler.

Claims

1. a cooling rotary moveable encircles the combustion chamber, have face arch and rear arch, it is characterized in that between face arch and rear arch, having additional the rotary moveable arch, this rotary moveable arch is a skeleton with the hollow steel pipe, can feed cooling water in the hollow steel pipe, hollow steel pipe outer wrapping refractory material, the mobile jib of rotary moveable arch stretches out outside the furnace wall, and the rotary moveable arch can be that central shaft rotates with the mobile jib.