CN2085025U - Series grates for gas stove - Google Patents
Series grates for gas stove Download PDFInfo
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- CN2085025U CN2085025U CN 90216173 CN90216173U CN2085025U CN 2085025 U CN2085025 U CN 2085025U CN 90216173 CN90216173 CN 90216173 CN 90216173 U CN90216173 U CN 90216173U CN 2085025 U CN2085025 U CN 2085025U
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Abstract
The utility model relates to a series grate for a gas stove, which is used in the technical field of coke, lump coal and briquette fixed bed gasification. In the utility model, an A layer is provided with a circular vent hole, the surface of the series grate for a gas stove is provided with two spiral bars whose cross sections are square. The bar ends of rows of bars on the A layer, a B layer, a C layer and a D layer are tilted upward; slag breaking bars are newly arranged at the points of the square corners of an E layer; the lower edgefolds of the E layer are extended outward. Outer air passages between each two layers of the A layer, the B layer, the C layer, the D layer, the E layer and an F layer are all composed of parallel planes; When improved, and a base F is staggered and in butt-joint with the E layer when improved. The A layer, the B layer, the C layer and the D layer are connected through a central rod; the service parts of the B layer and the C layer are in splitting type structure. Compared with an LJF type grate, the utility model has the advantages of large area of ventilation, uniform air flow distribution, high ability in breaking and removing slag, convenient maintenance, convenient maintenance and stable operation; the series grate for a gas stove is able to increase the gas yield of a gas stove, improve the quality of gas, and reduce coal consumption.
Description
The utility model belongs to coke, lump coal, moulded coal (coal briquette, coal rod etc.) fixed bed gasification technical field, is applicable to water-gas or the semi-water coal-gas producer of internal diameter ∮ 2260-φ 2400.
China is that the small nitrogenous fertilizer plant of raw material has family more than 1000, about more than 5000 of gas burner, more than 3,000 ten thousand tons of year coal consumptions with the coal.Energy-intensive contradiction has hindered development and national economy.Have the small nitrogenous fertilizer plant of the title of " coal tiger ", energy-saving and cost-reducing imperative, meaning is very great.
The main equipment of gas making is a gas burner, and the key of gas burner and core component are fire grates.Diameter be ∮ 2260-φ 2400 gas burner as shown in Figure 1, its (1) is body of heater, (2) are fire grate, (3) are chuck, (4) are ash-pan, (5) are transmission device.Fire grate (2) is installed on the ash-pan (4), and along with ash-pan rotates, the rotation of ash-pan is by motor-operated by transmission device (5).
Gas making is the tap of chemical fertilizer production, and tap does not come back, and full factory all worries.Gas making is the weak link of small fertilizer plant always, and the energy consumption of gas making simultaneously accounts for more than 65% of whole chemical fertilizer production.So want the energy-saving and cost-reducing gas production that improves, just must constantly transform gas burner, to transform gas burner and at first will transform fire grate, production practices prove: the appearance of novel fire grate each time all brings energy consumption to descend, and gas production improves.Therefore, each chemical design institute, the whole nation, each chemical industry universities and colleges reach and respectively change machine factory all at the novel fire grate of positive development, and under these circumstances, we improve fire grate significance.
Fire grate effect: the charcoal layer is moved, broken scar piece, automatic removing dust, decentralized gasification medium (steam, air).The quality of gas burner performance depends primarily on fire grate.The technical indicator of estimating gas burner fire grate performance mainly is: the air quantity size, the air-flow distribution situation, the ability of crashing steel (iron) slag block, whether the charcoal layer descends evenly in the stove, whether the gasification layer stable, whether is convenient to control, blow down carry-over what, to coal adaptability how or the like.These performance synthesises get up, and add appropriate processing condition and meticulously operation, should make the gas burner gas production big, and gas quality is good, and coal consumption is low, and should make gas burner can be stably, produce safely.
At present, China's small nitrogenous fertilizer plant uses maximum and more advanced fire grate is the equal wind type of the LJF-∮ 2260 spirals fire grate of Feixiang machine factory production.It is contained in situation such as Fig. 1 in the stove, and its structure as shown in Figure 2.
(a) is front view in the accompanying drawing 2, (b) is vertical view
It is made up of six parts such as A layer (6), B layer (7), C layer (8), D layer (9), E layer (10), F layer (11).
A layer (6) is a garden shape fire grate cap; B, C, D, E(7,8,9,10) four layers, every layer is the ring-type cone, there are four sections spiral bars (12) on its surface, connects with bolt (13) mutually between these four layers, combines and constitutes the cone of a symmetry; After assembling, four sections spiral bars on every layer overlap, and have formed four counterclockwise continuous spiral bars, and this which floor structure is similar, varies in size.With the C layer is example, its structure such as Fig. 3.In the accompanying drawing 3,12 is one section spiral bar, and 14 is the upward folded of last ventilating opening, and 15 are the following downward flanging of ventilating opening.
The structure of E layer such as Fig. 4, its superstructure and D layer are similar, and the floor projection of its underpart is square, and four jiaos have one section garden arc transition.
The F layer is a plinth, its structure such as accompanying drawing 5, and its outer margin contour is identical with E layer floor projection.
It is big that this fire grate has draught area, and gas-flow resistance is little, the gas production height, and advantage such as air-flow is evenly distributed, and ashing capacity is big, but also have many shortcomings, mainly contain:
1, fire grate is too high.1540 millimeters of this fire grate height overalls are though this height helps break.But, it makes the layer that gasifies in the stove wayward, also unstable, referring to accompanying drawing 1, wherein between the upper end of fire grate (2) top and chuck (3) 0.7 meter distance is only arranged, if it is concordant with chuck that the interior charcoal layer of stove installs to, then fire grate top carbon layer only has 0.7 meter, and so Bao charcoal layer is to be difficult to set up stable gasification layer.
2, fire grate cap A layer easy burn-out because fire grate is too high, fire grate A layer is easy in the deep gasification layer, and gasification layer temperature is very high, causes the A layer often to burn out, and changes frequently, and influence is produced.
3, outer air channel draught area is little, and the gap, air channel is inhomogeneous.At present, estimate the fire grate draught area all beyond the air channel weigh.The about 0.9M of outer air channel area of LJF type fire grate
2, only being equivalent to 60% of RB type fire grate, outer air channel draught area is little, and the fire grate that is equivalent to boiler is close, influences air-flow and contacts with charcoal, makes up so have to open bar hole on the conical surface.The gap in outer air channel is inhomogeneous between this fire grate B, C, D, the E, and size differs 1/4, and outer air channel is unreasonable especially between E, the F, the square middle big place of ventilation that needs, and draught area is on the contrary little, and four jiaos require the little places of air quantity, and draught area is big on the contrary.
4, deslagging poor performance.This fire grate slagging rib head slyness, and too short, be unfavorable for deslagging, and this fire grate ventilation being big, the furnace temperature height easily burns till the scar piece, and the scar piece of generation can not in time be discharged, and is cumulative, so that knot in the stove is dead, get only blowing out and beat scar.
5, service life is short.Too high because of this fire grate, fire grate top burns out easily, and bar hole is too close in addition, and proper alignment is easy to generate casting stress again, so be easy to from a neat fracture.
6, coal adaptability is poor.Charcoal bed thickness in this fire grate height, stove, gas-flow resistance is big, so the incompatible small coal that burns; Deslagging poor performance, so the big colm of incompatibility ashing part.
7, versatility is poor, uses LJF type fire grate must increase jacket boiler.But each small fertilizer plant's majority does not all use and increases jacket boiler at present.
8, be unfavorable for maintenance.
(1) layer adopts Bolt Connection with layer, and spare part interchangeability is poor, and that one deck has been broken all difficult the replacing, brings difficulty to maintenance.
(2) this fire grate height, not only A, B layer easy burn-out, C, D layer also hold and burn out, and this is two-layer to have one deck to burn out the furnace bottom that all must fall could to change.Waste time and energy the maintenance cost height like this.
The purpose of this utility model is that a kind of improved gas burner fire grate will be provided, and it is bigger that it can make gas burner have draught area, and resistance is littler, air-flow is more evenly distributed, and dreg-breaking performance is strong, and the gasification layer is stablized easy to control, strong to coal adaptability, easy to maintenance, advantages such as long service life.
The purpose of this utility model is achieved in that this fire grate is from top to bottom by garden shape fire grate cap A layer, four layers of ring-type cone that diameter strengthens gradually, the cone of the synthetic symmetry of B layer, C layer, D layer and E layer upper group, all uniform four sections counterclockwise spiral bars on every layer of conical surface, they combine respectively and constitute four continuous spiral bars that the interval is identical, every layer of ring-type ventilating opening all has upper hem and lower hem, and the lower hem outer margin contour of E layer is square, and four jiaos is garden arc transition.Of the present utility model being characterised in that: A laminar surface spiral bar cross section is square; The muscle head rises to upper fin, arranges garden shape air vent on B, C, D, each layer of the E conical surface, and staggered.Slagging rib on B, C, D, each layer of E is a square structure, and the muscle head rises to upper fin, and A, B, four layers of floor projection of C, D are garden shape, and the gap, air channel is equidistant between them; Gap, outer air channel is even between E, the F, and E layer corner place is provided with rib-breaking rib and stretches out lower hem; The two-layer butt joint of staggering of E, F is provided with supporting leg and anti-switch block B, the two-layer spare part of C is a dissection type at this two-layer corner place.
In conjunction with the accompanying drawings the utility model is described in detail now.
Accompanying drawing 6 is the location drawing of the utility model in stove.Wherein 1 is body of heater, and 16 is the utility model, and 3 is water leg, and 4 is ash-pan.Accompanying drawing 7 is its structure charts, and wherein (a) is front view, (b) is vertical view.17 is garden shape fire grate cap (A layer) among the figure, have garden shape air vent (23) on it, and the counter-clockwise direction cross section that two symmetries are arranged is square spiral bar (24), among the figure 18,19,20 and 21 is ring-type cones that diameter strengthens gradually, be called the B layer respectively, the C layer, D layer and E layer, they combine and constitute the cone of a symmetry, 25 is center-pole, 26 is crossbeam, 27 is one section spiral bar on the ring-type cone conical surface among the figure, B, C, D, each four sections spiral bar on the conical surface of four layers of ring-type cone of E are formed four spiral bars that counter-clockwise direction is continuous respectively.A, B, C, D connect with center-pole for four layers.
B, C, D three-decker are similar, and size has nothing in common with each other, and accompanying drawing 8 is the structure chart of C layer, and wherein (a) is front view, (b) is vertical view, and 27 is spiral bar on the conical surface among the figure, and 28 is last ventilating opening upper hem, and 29 are ventilating opening lower hem down.Accompanying drawing 9 is a C layer spare part structure chart, and principal character is a split type structure.Accompanying drawing 10 is the structure chart of E layer (21).Wherein (a) is front view, (b) is vertical view, and E layer top is similar to the D layer, and substructure is special, and its outer margin contour is square, and four jiaos is garden arc transition.30 is E layer upper hem, and 31 is lower hem, and 32 is newly-installed rib-breaking rib.33 are the anti-switch block after improving.
Accompanying drawing 11 is the structure chart of F layer, and wherein (a) is front view, (b) is vertical view, and F layer floor projection is similar to the E layer.The E layer is opened with the F fault and is docked, and leans on four outrigger supports, and fixes with four bolts.34 are the supporting leg after improving.
The utility model has following characteristics:
1, reduced height. The more former fire grate height of the utility model has reduced by 200 millimeters; two kinds of fire grates are contained in the stove respectively such as (a) in the accompanying drawing 12 with (b); both contrasts as shown in Figure 13; wherein 2 is former fire grate; 16 is new fire grate; after reducing height; can make carbon layer increase by 200 millimeters; fire grate cap top carbon layer can reach more than 1 meter; so just can avoid fire grate top to go deep in the gasification layer, can effectively protect fire grate not to be burned, the gasification layer in the charcoal layer also be more prone to set up simultaneously; and be convenient to control, this has just fundamentally overcome the shortcoming of former fire grate.
2, increased outer air channel draught area, the utility model increases by 30% than the outer air channel of former fire grate draught area, and resistance is littler like this, and air quantity is bigger, can increase considerably gas yield.
3, air vent is the boring of garden shape on A, B, C, D, five layers of conical surface of E, and staggered, reduces casting stress like this, gains in strength, and has improved service life.
4, each layer conical surface thickness thickening gradually from inside to outside is with charcoal layer contact portion thickness 40-45 millimeter, not only wear-resisting but also anti-like this burning.
5, to connect with layer be that the center rod-type connects to layer, makes assembling and keep in repair convenient.
6, at E layer corner place rib-breaking rib is set, is beneficial to the deslagging break, the fire grate height is descended.
7, cloth wind is even, and outer air channel is uneven wedge shape between former fire grate B, C, D, the E layer, and the gap, air channel of this fire grate is uniform parallel shape; Gap, air channel between former fire grate E, the F layer is the parabolic inhomogeneous shape of forming with the plane, it and institute's required airflow are inversely proportional to, required airflow is big in the middle of square, but draught area is little, square four jiaos of place's required airflows are little, draught area is big on the contrary, and new fire grate is the air channel that two parallel planes are formed, so cloth wind is even.
8, at each layer lower hem interior outer baffle block is set, prevents to move radially,, also can prevent to move radially, guaranteed that like this gap, air channel is even, avoid the gas bias current even outside block burns out or weares and teares.
9, base improvement back is opened with the E fault and is docked, and the break of fire grate and two kinds of functions of ash discharge are separated.Break is finished by E layer rib-breaking rib and lower hem, and ash discharge is finished by F layer corner place, has so both reduced the fire grate height, and the fire grate dreg-breaking performance is strengthened.
10, at the two-layer corner of E, F place supporting leg and anti-switch block are set, make break stressed more reasonable, avoid fire grate to damage.
11, the two-layer spare part of this fire grate B, C is a dissection type, and the furnace bottom that do not fall is replaceable, during replacing the B, the C layer electricity consumption welding that damage on the former fire grate is opened, and takes out from fire door, changes the dissection type spare part again.
12, this fire grate is strengthened slagging rib, and height is increased to 110-130 by 80, and width is added to 80 by 70, and each layer slagging rib head wing rises, and the deslagging performance is improved.
13, this fire grate is advanced in performance, and is simple in structure, easily manufactured, and material usage is economized, and this fire grate is all adopted in the whole nation, can save cast iron two, three kilotons every year.
The utility model has been compared following advantage with the LJF type:
1, draught area is big, and this fire grate increases by 30% than the outer air channel of LJF type fire grate draught area.Air resistance is little like this, and air quantity is big, thereby can reduce blow-time, increases the system gas time, and the gas burner gas production is increased.
2, air-flow is evenly distributed, and all air channels all are that parallel plane is formed, and therefore air-flow distribution everywhere all is uniform.
3, the deslagging dreg-breaking performance is strong, because each layer slagging rib done reinforcement, and rib-breaking rib is set at E layer corner place, make dreg-breaking performance increase by 25%, so can at high temperature operating not to be afraid of, it scabs.
4, the gasification layer is stable, is easy to control.Because the fire grate height reduces, the effective charcoal layer in fire grate top is thickened, so the gasification layer is set up easily, be easy to control, be beneficial to the gas burner stable yields, high yield.
5, easy to maintenance.This fire grate adopts the center rod-type to connect; One, two, the three layers of furnace bottom that do not fall in top are replaceable, not only save time, laborsaving, easy to maintenance, also save maintenance cost greatly.
6, long service life.The fire grate height reduces, and the gasification layer is not goed deep on fire grate top, thereby is difficult for being burnt out; Replace the casting bar hole with artificial boring, overcome because of the concentrated damage that causes of casting stress; Each layer conical surface thickness has been done reinforcement.Improve general available 1 year like this service life greatly.
7, strong to coal adaptability.Because the fire grate height reduces, can under low charcoal layer, operate, thereby
Claims (2)
1, a kind of gas burner series fire grate, from top to bottom by garden shape fire grate cap A layer, four layers of ring-type cone B layer that diameter strengthens gradually, the C layer, the D layer, E layer and F layer are formed, four sections spiral bars are distributing on every layer of conical surface, they combine respectively and constitute four continuous spiral bars, B, C, D, each layer of E all has upper hem and lower hem, E layer lower hem is square, four jiaos of garden arc transition, in each layer lower hem all is provided with, outer baffle block, garden shape air vent is staggered on each layer conical surface, it is characterized in that it is the square spiral muscle that the A laminar surface has two cross sections, A, B, C, each helical layer muscle muscle head of D rises to upper fin, the place newly is provided with rib-breaking rib at E layer corner, and protruding lower hem, A, B, C, D, E, the outer air channel of each layer of F all is made up of parallel plane, and base F opens with the E fault and docks, A, B, C, four layers of employing center-pole of D connect B, the two-layer spare part of C is a split type structure.
2, according to the said gas burner series of claim 1 fire grate, it is characterized in that newly-installed rib-breaking rib bottom, said E layer corner place is provided with anti-switch block, F layer corresponding site is provided with supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90216173 CN2085025U (en) | 1990-07-14 | 1990-07-14 | Series grates for gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90216173 CN2085025U (en) | 1990-07-14 | 1990-07-14 | Series grates for gas stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085025U true CN2085025U (en) | 1991-09-18 |
Family
ID=4895368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90216173 Withdrawn CN2085025U (en) | 1990-07-14 | 1990-07-14 | Series grates for gas stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745232A (en) * | 2013-12-25 | 2015-07-01 | 河南金土地煤气工程有限公司 | Combined type furnace bar device specially used for biomass gasification furnace |
-
1990
- 1990-07-14 CN CN 90216173 patent/CN2085025U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745232A (en) * | 2013-12-25 | 2015-07-01 | 河南金土地煤气工程有限公司 | Combined type furnace bar device specially used for biomass gasification furnace |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |