CN103354889A

CN103354889A - Grate bar

Info

Publication number: CN103354889A
Application number: CN2012800074057A
Authority: CN
Inventors: T·科赫
Original assignee: Seko Patent GmbH
Current assignee: Seko Patent GmbH
Priority date: 2011-02-04
Filing date: 2012-01-05
Publication date: 2013-10-16
Also published as: JP2014507621A; EP2671026A1; RU2013140667A; EP2487414B1; WO2012104111A1; US20130306050A1; EP2487414A1

Abstract

The invention relates to a grate bar (1) for combustion systems, comprising a substantially closed surface (4) facing the combustion side, a rear support region (2) designed to be placed on a grate carrier for forming the grate, and a front nose region (3), which is rounded between the surface (4) and front edge (3') and has a bearing surface (5) designed on the lower face and further has cooling fins for air cooling which protrude from the lower face of the surface forming the grate, wherein a head part (8) in the interior comprises at least regionally thickened head fins for air cooling in the longitudinal direction and vertical direction below the surface (4) facing the combustion side. The grate bar (1) can also be designed as a reversible grate bar.

Description

Fire bars

Technical field

The present invention relates to a kind of fire bars as described in the preamble according to claim 1.

Background technology

To various fuel, such as household garbage, industrial refuse, wood chip, fuel solid or porous and burning with high and low flammable fuel, use traditionally the incinerator with combuster, in these combustion chambers, for example fuel assembly is placed on the mechanically operated fire grate and burning thereon.

In incinerator, usually the comburant with large calorific value and little calorific value is processed, thereby the large problem that can cause because being heated in the fire grate element appearance of filling.Special in the fire grate head region of fire grate element, these fire grate elements meetings are burnt owing to high thermic load or are corroded.

Summary of the invention

The object of the invention is to, a kind of fire bars is provided, this fire bars has long service life.

Purpose according to the present invention is achieved by the described fire bars of a kind of clause according to claim 1.Other embodiment illustrates in the dependent claims.

Propose a kind of fire bars for incinerator, this fire bars comprises: the surface towards combustion side of integrally closed basically; The support region at rear portion, this support region are configured to be bearing on the grate bearer to consist of fire grate; And the front portion, between described surface and front seamed edge the protruding nose of rounding, this protruding nose has the bearing-surface that is configured on the bottom side; And stretched out by the downside on the surface that consists of fire grate, be used for air cooled fin, wherein, the head part has the head fin of at least part of thickening structure in inside, these head fins are used for longitudinally carrying out the air cooling with vertical direction towards the lower face of combustion side.Realize thus: according to the significant prolongation in service life of fire bars of the present invention, this be because when protruding nose because of be heated, for example in addition owing to after chlorine corrosion causes degrading, although the burned slag sealing of head fin, the other obstacle that degrades that the thickening part of head fin is configured for causing because being heated and while can be realized by the head fin cooling of head part.

Another kind of embodiment is: the head fin have two or more, two, three or four thickening parts that are arranged in parallel particularly.Can also further prolong thus the service life of fire bars, this is because also possess after outermost combustion front degrades at least one the other face that degrades because being heated.

Another kind is according to the embodiment of the present invention: the head fin has the basically thickening part of trapezoidal and/or bell mouth shape and/or polygonal and/or wedge shape.May be considered that: will be thickened structure the head fin the shape any combination for as only have polygonal thickening part or with the arbitrarily combination of other form.

Another kind is according to the embodiment of the present invention: be configured with respectively the head slit between sidewall and head fin.The project organization that partly has the head fin or be in head slit therebetween by head can make the heat or the heat that produce by combustion process derive by large cooling surface.Combustion air can circulate by the head slit.Thermal losses is partly located at the head that this at first mainly occurs in fire bars.If the loss that the combustion front of head part causes because being heated is degraded,

Part form, that be in the rear portion of the trapezoidal thickening part of the burned slag sealing in head slit is used for continuing loss so.Can realize the circulation of combustion air and can realize thus the cooling partly of hot head by means of the head slit.

Another kind of embodiment is: the head slit has the horn mouth that is arranged on the head partial interior, and horn mouth then leads in the part of constructing that attenuates in head slit.At this, the head fin is arranged between the head fin of the end wall of side and similar projections section and jointly consists of the structure of similar pectination.

Another kind of embodiment is: head fin approximately forwardly 1/3rd places adds the heavy back structure.

Another kind of embodiment is: at least a portion of sidewall partly has recess along head.

Another kind of embodiment is: fire bars has back portion, and this back portion is provided with at least one longitudinal slot that opens wide towards described surface in back portion, and wherein, fin reaches back portion inside.

Another kind of embodiment is: fire bars is made of metal.

In another embodiment, fire bars is configured to the fire bars that overturns, and it has protruding nose and head part with the rear portion of the protruding nose of front portion and head part same configuration.Upset and again use other head part in identical running time actually thus when this upset fire bars can terminate in the service life of the first head part.Be configured with symmetrically arranged two bearing-surfaces about fire bars central authorities at downside for this reason.

Another aspect of the present invention relates to a kind of fire grate of the fire grate burner hearth for inserting incinerator, wherein, at least one horizontally-arranged with good grounds fire bars of the present invention is arranged in the fire grate movingly, and and then the first horizontally-arranged is provided with next horizontally-arranged that has according to fire bars of the present invention regularly.Therefore realized: comburant can move towards the direction of combustion side constantly.

In another embodiment, fire bars overlaps alternately with the surperficial flake type of its bearing-surface and follow-up fire bars.

In another embodiment, a plurality of fire bars arrange in parallel with each other with its longitudinal side.

Description of drawings

Further set forth embodiments of the invention by accompanying drawing below.In the accompanying drawing:

Fig. 1 schematically shows the side view cutaway drawing according to fire bars of the present invention;

Fig. 2 schematically shows the view according to Fig. 1;

Fig. 3 illustrates along the first cutaway view that amplifies according to the line E-E of Fig. 2;

Fig. 4 illustrates along the second cutaway view that amplifies according to the line B-B of Fig. 2;

Fig. 5 illustrates along the 3rd cutaway view that amplifies according to the line A-A of Fig. 2;

Fig. 6 illustrates the head part according to the amplification of fire bars of the present invention according to Fig. 7;

Fig. 7 schematically shows the top view according to fire bars of the present invention;

Fig. 8 a schematically shows the side view cutaway drawing according to another head part of fire bars of the present invention;

Fig. 8 b schematically shows the top view according to Fig. 8 a;

Fig. 9 a schematically shows the side view cutaway drawing according to the another head part of fire bars of the present invention;

Fig. 9 b schematically shows the top view according to Fig. 9 a; With

Figure 10 a schematically shows the side view cutaway drawing according to the another head part of fire bars of the present invention; With

Figure 10 b schematically shows the top view according to Figure 10 a.

The specific embodiment

Fig. 1 schematically shows the cross section C-C according to Fig. 7 according to the fire bars 1 for incinerator of the present invention.Such fire bars or element can arrange with in fact arbitrarily width connection side by side flatwise.May be considered that at this: fire bars at first in the first horizontally-arranged the longitudinal side with them arrange in parallel with each other, and and then the first horizontally-arranged is followed at least one other horizontally-arranged.Wherein the first horizontally-arranged can have the fire bars that is fixedly installed, and the fire bars of described other horizontally-arranged arranges movingly at this.Motion by fire bars can be transported incendiary material constantly to the direction of combustion side.May be considered that: perhaps correspondingly alternately be fixedly installed a horizontally-arranged to property and the horizontally-arranged of and then following arranges movingly, and next horizontally-arranged is fixedly installed again, etc.But also can consider that fix and movable horizontally-arranged other structure is set, for example, a horizontally-arranged is movable, and then is again two horizontally-arrangeds that are fixedly installed, and then is again a movable horizontally-arranged.Be configured to support region 2 to the end 2 protruding nose formulas of fire bars 1, in order in incinerator, be fixed in the pillar in known manner.The leading section of fire bars 1 has rounded edge or is in the extendible portion of the combustion front 4 on top with protruding nose 3 conducts of front seamed edge 3 '.In case combustion front 4 is because the corrosion that causes because being heated is degraded, the face 4 ' in the bottom of the combustion front 4 of fire bars 1 inside can consist of another combustion front.Support region 2 and also have protruding nose 3 so to construct, namely, fire bars 1 flake type overlaps alternately, in other words, correspondingly is on the surface that bearing-surfaces 5 below the protruding nose 3 supported or be placed into follow-up fire bars 1 or is on the combustion front 4 on top and consists of thus the fire grate surface of incinerator.In addition, fire bars has cross rib sheet 6 and back portion 7.Front seamed edge 3 ' and the zone between the cross rib sheet 68 at protruding nose 3 consist of head part 8.

Fig. 2 schematically shows the view according to Fig. 1.The Reference numeral of Fig. 1 introducing conforms to the feature of Fig. 1 relatively.Shown in Figure 2ly in addition have a recess 10,10 ', 10 ' ' and the sidewall 9 that is used for connecting the fitting opening 11 of each fire bars.

Fig. 3 illustrates along the first cutaway view that amplifies according to the line E-E of Fig. 2.The combustion front 4 integrally closed ground that are in top are constructed and are transferred in the end wall 12 of side.Head fin 13,13 ' along the first section A1 be configured in combustion front 4 below or in other words, be configured to be configured in the jut that stretches into fire bars 1 inside below the combustion front.Head fin 13 at this at first along the longitudinal extension of fire bars 1 and vertically extend.Between each head fin 13,13 ', be configured with

head slit

14,14 '.Head slit 14,14 ' is formed in groove between each head fin 13,13 ' at this.Compare with adjacent two horn mouths 15 that are arranged on every side in head slit 14, the head slit 14 ' of central authorities has wider horn mouth 15 '.Head slit 14,14 ' is configured to open wide downwards.Head slit 14,14 ' is arranged on the end wall 12 of side and is configured between the head fin 13,13 ' of jut of head part 8 and at the head part 8 inner structures that consist of similar pectination.Horn mouth 15,15 ' lead to corresponding head slit 14,14 ' attenuate the structure part 16,16 ' in.

Fig. 4 is along the second cutaway view that amplifies according to the line B-B of Fig. 2.The fin 17 of the back portion 7 of different spread lengths extend into fire bars 1 inside at this.Between each fin 17, be configured with interval 18.Illustrate in addition and have corresponding recess 10 ' ' sidewall 9.

Fig. 5 illustrates along the 3rd cutaway view that amplifies according to the line A-A of Fig. 2.Sidewall 9 is assembled opening 11 perforation.Fin 17 with the interval 18 that is in therebetween is shown in addition, and these fin are set out by combustion front 4 and extend into fire bars 1 inside.

Fig. 6 illustrates the head part 8 according to the amplification of the part Z of Fig. 7 according to fire bars of the present invention.The second section A2 of combustion front 4 does not construct head fin 13,13 ' or do not have structure to be in

therebetween head slit

14,14 '.In other words, the second section A2 consists of whole subelement of head part 8.And then the second section A2 is configured with the 3rd section A3, and the 3rd section has trapezoidal head fin 13,13 ' and be in

therebetween head slit

14,14 '.Head fin 13,13 ' or head slit 14,14 ' extend and not only vertically but also along the vertical direction of this head part extending along head part 8 simultaneously towards direction of cross rib sheet 6 at this.Head slit 14,14 ' towards the exterior configuration of head part 8 correspondingly is configured between the end wall 12 and corresponding head fin 13 of side.And then the second section A2, in corresponding head slit 14,14 ', respectively be configured with the import 19,19 ' of a bell mouth shape.Head slit 14,14 ' correspondingly has the part 16,16 ' that attenuates, and this part that attenuates is led in the outlet 20,20 ' of bell mouth shape.Outlet 20,20 ' forwards in the head slotted section 21,21 ' of comparing wide with the part 16,16 ' of the structure that attenuates at this.Head fin 13,13 ' part 22,22 ' are configured to trapezoidal thickening part thus basically.

Fig. 7 illustrates the top view according to fire bars 1 of the present invention.What illustrate is to have head slit 14,14 ' and head fin 13,13 ' head part 8 and have fin 17 and be in the back portion 7 at interval 18 therebetween.At this, head slit 14,14 ' and interval 18 vertically in succession arranging and interconnecting along fire bars 1.In the situation that air cools off fire bars, the loss the highest and that cause because being heated of the temperature in head part 8 is maximum in the combustion process.The large cooling surface of the structure by head fin 13,13 ' similar pectination are provided and the circulation of the combustion air in head slit 14,14 ' can be derived heat.If the second section A2(sees Fig. 6) owing to thermal losses is degraded, provide so and then follow have head fin 14,14 ' the 3rd section A3(sees Fig. 6) be used for the thermal losses that continues.Until head fin 14,14 ' trapezoidal thickening part 22,22 ' degrade because being heated equally.

Fig. 8 a schematically shows the side view cutaway drawing according to another head part 8 ' of fire bars of the present invention.This illustrate for because the ground floor that degrades 23 of heat erosion, this ground floor is at least part of to be made of combustion front 4.Can see the second layer 24 and the 3rd layer 25 among this external Fig. 8 a.The second layer 24 and the 3rd layer of 25 head fin 13,13 ' of being constructed by thickening consist of.Between ground floor 23 and the second layer 24, be configured with the first recess 26.The second recess 27 is between the second layer 24 and the 3rd layer 25.The second layer 24 is towards the inner direction of described other head part 8 ' ground floor 23 and then.The 3rd layer 25 towards the inner direction of the described other head part 8 ' second layer 24 and then.And then the 3rd layer 25 be central authorities head slit 14 '.By these three for what can realize owing to the

layer

23,24,25 that degrades of heat erosion be, fire bars according to the present invention has long service life, its method is, because after ground floor 23 causes degrading because being heated, also possess two

other layers

24,25 and be used for degrading of continuation, namely be provided for thermal losses.

Fig. 8 b schematically shows the top view according to Fig. 8 a.Shown in it is three

layers

23,24 and 25.Second and the

3rd layer

24,25 has at this at head fin 13,13 ' is

polygonal thickening part

28,28 ', 29,29 '.Polygonal thickening

part

28,28 ', 29,29 ' reaches described other head part 8 ' inside at this from

corresponding head fin

13,13 '.What follow ground floor 23 is the first recess 26, and and then the first recess 26 is the second layer 24.On the second layer 24 next doors the second recess 27 is set again, what then follow is the 3rd layer 25.And then extend for the 3rd layer 25 in head slit 14 '.The thickening part 28 ', 29 ' that wherein is arranged on central authorities is compared with the thickening

part

28,29 that its side extends to construct and to be got approximately double-thickness.Corresponding head slit 14,14 ' is in respectively between

polygonal thickening part

28,28 ', 29,29 '.

Fig. 9 a schematically shows the another head part 8 ' according to fire bars of the present invention ' side view cutaway drawing.Shown in it is that three

layers

23,24,25 are together with

recess

26,27.

Fig. 9 b schematically shows the top view according to Fig. 9 a.What be different from Fig. 8 a is: the second layer 24 has the thickening part 30,30 ' of bell mouth shape structure, and the 3rd layer of 25 thickening part 31,31 ' with polygonal structure.

Figure 10 a schematically shows the another head part 8 ' according to fire bars of the present invention ' ' side view cutaway drawing.Three

layers

23,24,25 shown in this.Additionally, and then the 3rd layer 25, towards described another head part 8 ' ' ' inner be the 4th layer 32.Between the 3rd layer 25 and the 4th layers 32, be configured with another recess 33.

Figure 10 b schematically shows the top view according to Figure 10 a.Be different from Fig. 8 a and 9a, the second layer 24 has the thickening part 34,34 ' of Wedge-shape structures, and the 3rd layer of 25 thickening part 35,35 ' with polygonal structure.In addition and then the 3rd layer 25 be that to have be polygonal thickening part 36,36 ' the 4th layer 32 equally.Can realize thus the long especially service life according to fire bars of the present invention.

May be considered that: the thickening part described in head fin 13,13 ' the in front accompanying drawing can at random be made up mutually.

The feature that has identical Reference numeral in Fig. 1 to 10b conforms to corresponding identical technical characterictic in the corresponding accompanying drawing.

Claims

1. be used for the fire bars (1) of incinerator, comprise: basically integrally closed, towards the surface (4) of combustion side; The support region at rear portion (2), this support region are configured for being bearing on the grate bearer to consist of fire grate; And the front portion, between surface (4) and front seamed edge (3 ') the protruding nose (3) of rounding, this protruding nose has the bearing-surface (5) that is configured on the downside; And stretched out by the downside on the surface that consists of fire grate, be used for air cooled fin (17), it is characterized in that, head part (8) has the head fin (13 of at least part of thickening structure in inside; 13 '), these head fins are used for longitudinally carrying out the air cooling with vertical direction in described surface towards combustion side (4) below.

2. fire bars according to claim 1 (1) is characterized in that, head fin (13; 13 ') have two or more, preferred two, three or four thickening parts that are set parallel to each other (22,22 '; 28,28 '; 29,29 '; 30,30 '; 31,31 '; 34,34 '; 35,35 '; 36,36).

3. fire bars according to claim 1 and 2 (1) is characterized in that, head fin (13,13 ') has (30,30 ') and/or polygonal (28,28 ' of basically trapezoidal (22,22 ') and/or bell mouth shape; 29,29 '; 31,31 '; 34,34 '; 36,36 ') and/or (35,35 ') thickening part of wedge shape.

4. according to claim 1 to each described fire bars (1) of 3, it is characterized in that, at sidewall (9) and each head fin (14; 14 ') be configured with respectively head slit (14 between; 14 ').

5. according to claim 1 to each described fire bars (1) of 4, it is characterized in that head slit (14; 14 ') has the horn mouth (15 that is arranged on head part (8) inside; 15 '), and this horn mouth (15; 15 ') then lead to head slit (14; The part (16 of the structure that attenuates 14 '); 16 ') in, and wherein, these head slits (14; 14 ') be arranged on the end wall (12) of side and the head fin (13 of jut shape; 13 ') also jointly consist of the structure of pectination between.

6. according to claim 1 to each described fire bars (1) of 5, it is characterized in that head fin (13; 13 ') approximately forwardly 1/3rd places add the heavy back structure.

7. according to claim 1 to each described fire bars (1) of 6, it is characterized in that, at least a portion of sidewall (9) has recess (10 along head part (8); 10 '; 10 ' ').

8. according to claim 1 to each described fire bars (1) of 7, it is characterized in that, fire bars (1) has back portion (7), this back portion is provided with at least one longitudinal slot that opens wide towards described surface (4) in this back portion (7), and wherein, fin (17) reaches described back portion (7) inside.

9. according to claim 1 to each described fire bars of 8, it is characterized in that, fire bars (1) is made of metal.

10. according to claim 1 to each described fire bars of 9, it is characterized in that, this fire bars is configured to the fire bars that overturns, and it has protruding nose and head part with the rear portion of the protruding nose (3) of front portion and head part (8) same configuration.

11. the fire grate for the fire grate burner hearth of inserting incinerator, it is characterized in that, have according to claim 1 at least one horizontally-arranged of each described fire bars (1) of 10 and be arranged in the fire grate movingly, and and then the first horizontally-arranged is provided with next horizontally-arranged that has according to claim 1 to each described fire bars (1) of 10 regularly.

12. fire grate according to claim 11, wherein, described fire bars (1) overlaps alternately with surface (4) flake type of its bearing-surface (5) with follow-up fire bars (1).

13. according to claim 11 or 12 described fire grates, it is characterized in that, a plurality of fire bars (1) arrange in parallel with each other with its longitudinal side.