CN201909309U - Chain boiler with heat conduction reflecting sub arch at tail part of back arch - Google Patents
Chain boiler with heat conduction reflecting sub arch at tail part of back arch Download PDFInfo
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- CN201909309U CN201909309U CN2011200068415U CN201120006841U CN201909309U CN 201909309 U CN201909309 U CN 201909309U CN 2011200068415 U CN2011200068415 U CN 2011200068415U CN 201120006841 U CN201120006841 U CN 201120006841U CN 201909309 U CN201909309 U CN 201909309U
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- chain
- arch
- heat conduction
- boiler
- subarch
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Abstract
The utility model discloses a chain boiler with a heat conduction reflecting sub arch at the tail part of a back arch, which belongs to the technical field of boiler arches of coal firing chain boilers and aims at overcoming the defects that the tail section of the back arch of the existing coal firing chain boiler can not radiate sufficient heat to a coal firing layer of the back half section of a boiler chain, so the coal firing layer realizes the temperature reduction and the fire cutoff in advance, and the waste is caused because many unburned coal balls are thrown away. The chain boiler comprises a boiler chain, a front arch, the back arch and the heat conduction reflecting sub arch, wherein the heat conduction reflecting sub arch is arranged at the tail part of the back arch and above the boiler chain, consists of a heated surface, a heat conducting body and a reflecting surface and is connected with the back arch through a hanging rod. The chain boiler is favorable for improving the coal firing utilization rate and reducing the operation cost of the boiler and is applicable to all coal firing chain boilers.
Description
Technical field
The utility model relates to a kind of combustion coal chain boiler chimney arch technology, particularly relates to the chain-grate boiler that a kind of rear arch afterbody is established heat conduction reflection subarch.
Background technology
In combustion coal chain boiler, face arch and rear arch be provided with position, shape structure and mutual cooperation to coal after entering burner hearth catch fire and important effect is played in sustained combustion.Chimney arch itself can not produce heat, accumulate and just absorb the heat that has fired the coal seam, after the temperature of itself raises again to the coal seam radiations heat energy in new coal seam and burning latter stage, this help just entering burner hearth new coal fire burns and make the coal seam sustained combustion until the complete after-flame of combustible.For present combustion coal chain boiler through for many years practical operation and observation analysis, find after having studied existing design specification simultaneously: front and back arches for the coal seam catch fire and coal seam role in the fierce combustion process in stove chain stage casing still is more satisfactory, air temperature and current tissue and exerting oneself of boiler in the burner hearth all can reach designing requirement, but, in the second half section of stove chain, the burning in coal seam is abundant inadequately, more uncombusted coal cinder is still arranged in the slag, particularly when using the substandard coal, combustible content in the slag significantly exceeds standard, and wasting phenomenon is very serious.Analyze reason, mainly be because: 1, the front and back of existing chain-grate boiler arch design, the ature of coal of institute's foundation is a combustibility II class bituminous coal preferably, but the actual ature of coal that is used is unsettled, its low heat value often is lower than designing requirement; Though 2, the rear of rear arch is the lowest part that is in whole arch, still too high from the stove chain, weakened radiation efficiency; 3, often temperature is lower for the rear of rear arch, and because of its inner close fitting has water screen tube, and the water in the water screen tube at this position all is the very low make-up water of temperature, is just needing a large amount of heat absorptions.The coal seam of so just causing burning because the fuel gas after-flame, again less than radiations heat energy, makes the coal seam under the brushing of air-supply after entering the stove chain second half section, cools to very soon below the ignition point, causes many unburnt coal cinders to be mingled in the cinder and abandons.
Summary of the invention
The purpose of this utility model provides the chain-grate boiler that a kind of rear arch afterbody is established heat conduction reflection subarch, the rear that overcomes present combustion coal chain boiler rear arch is because of can't the enough heats of radiation giving the coal-fired layer of stove chain second half section, make the coal-fired layer of cutoff of lowering the temperature in advance, cause the deficiency that more unburnt coal cinder is abandoned to be wasted.
The utility model is achieved by following technical proposals.
The utility model comprises stove chain, face arch, rear arch, is provided with heat conduction reflection subarch above the afterbody of described rear arch and described stove chain, and described heat conduction reflection subarch is made up of heating surface, heat carrier, reflecting surface and is connected with described rear arch with peg.Heat conduction described in the utility model reflection subarch has broken away from the entity of described rear arch, cuts off the approach that self heat is drawn by water screen tube.Simultaneously, it has heating surface and heat carrier again, can keep the higher temperature from body, thereby can be by reflecting surface to coal-fired layer radiations heat energy.
The length of described heat conduction reflection subarch is effectively held 1/3rd of coal face less than described stove chain, and its width is less than the width of described stove chain.The manufacturing material of described heat conduction reflection subarch can be according to the size of joining boiler, and the easy situation of drawing materials, and selects for use, and principle is the energy fire-resistant oxidation resistant, readily conduct heat from body is closely knit, and reflecting surface has good thermal radiation capability.The utility model extremely is preferably greatly by little by boiler output: made, made, watered with refractory cement by reinforcing bar by cast steel by heat resisting steel.
Against existing technologies, the beneficial effects of the utility model are:
Help coal-fired layer and after entering the stove chain second half section, still can keep good fired state, make the coal seam reach completing combustion, improved utilization rate of coal.
Colm is used the condition created, thereby saved a large amount of fat coals, reduced the operating cost of boiler.
Description of drawings
Fig. 1 is a positional structure schematic diagram of the present utility model, and Fig. 2 is described heat conduction reflection subarcuation schematic diagram (being watered with refractory cement by reinforcing bar), and Fig. 3 is that the A of Fig. 2 is to view.Among the figure: 1, stove chain, 2, face arch, 3, rear arch, 4, heat conduction reflection subarch, 5, peg, 6, heating surface, 7, heat carrier, 8, reflecting surface.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing and the specific embodiment.
Fig. 1 represented in the utility model, and heat conduction reflection subarch 4 is on the position and the mutual cooperation of stove chain 1, face arch 2 and rear arch 3.Heat conduction reflection subarch 4 is to hang with peg 5 to be connected on the rear arch 3, and heating surface 6 is met to the highest stove chain 1 middle part of furnace temperature, and reflecting surface 8 is towards the second half section of stove chain 1.
When boiler specifically moved, the heating surface of heat conduction reflection subarch 4 is met to the coal seam at the most prosperous stove chain 1 middle part of burning, and was very near again from getting, so be subjected to a large amount of radiant heat, by heat carrier 7 heat conducted to reflecting surface 8 again simultaneously.At this moment, the temperature on the reflecting surface 8 surfaces relatively stove chain 1 latter half of coal-fired layer that is in below it wants high, so it is to give off heat to keep the sustained combustion of coal-fired layer, helps the combustibles such as coal cinder of the difficult combustion of after-flame.Between heat conduction reflection subarch 4 and the rear arch 3 space is arranged, red-hot flue gas can be by this space to rear arch 3 surface heating, the back side of heat conduction reflection subarch 4 also can be to rear arch 3 surface emissivity heats, so the water screen tube institute received heat in the rear arch 3 can not be affected.
Claims (5)
1. a rear arch afterbody is established the chain-grate boiler that subarch is reflected in heat conduction, comprise stove chain, face arch, rear arch, it is characterized in that, be provided with heat conduction reflection subarch above the afterbody of described rear arch and described stove chain, described heat conduction reflection subarch is made up of heating surface, heat carrier, reflecting surface and is connected with described rear arch with peg.
2. a kind of rear arch afterbody according to claim 1 is established the chain-grate boiler of heat conduction reflection subarch, it is characterized in that, the length of described heat conduction reflection subarch is effectively held 1/3rd of coal face less than described stove chain, and its width is less than the width of described stove chain.
3. a kind of rear arch afterbody according to claim 1 is established the chain-grate boiler of heat conduction reflection subarch, it is characterized in that, described heat conduction reflection subarch is made by heat resisting steel.
4. a kind of rear arch afterbody according to claim 1 is established the chain-grate boiler of heat conduction reflection subarch, it is characterized in that, described heat conduction reflection subarch is made by cast steel.
5. a kind of rear arch afterbody according to claim 1 is established the chain-grate boiler of heat conduction reflection subarch, it is characterized in that, described heat conduction reflection subarch is watered with refractory cement by reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200068415U CN201909309U (en) | 2011-01-10 | 2011-01-10 | Chain boiler with heat conduction reflecting sub arch at tail part of back arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200068415U CN201909309U (en) | 2011-01-10 | 2011-01-10 | Chain boiler with heat conduction reflecting sub arch at tail part of back arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201909309U true CN201909309U (en) | 2011-07-27 |
Family
ID=44301510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200068415U Expired - Fee Related CN201909309U (en) | 2011-01-10 | 2011-01-10 | Chain boiler with heat conduction reflecting sub arch at tail part of back arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201909309U (en) |
-
2011
- 2011-01-10 CN CN2011200068415U patent/CN201909309U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20120110 |