CN218237866U - Premixed direct combustion type energy-saving gas hot-blast stove - Google Patents
Premixed direct combustion type energy-saving gas hot-blast stove Download PDFInfo
- Publication number
- CN218237866U CN218237866U CN202222144366.9U CN202222144366U CN218237866U CN 218237866 U CN218237866 U CN 218237866U CN 202222144366 U CN202222144366 U CN 202222144366U CN 218237866 U CN218237866 U CN 218237866U
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- air
- body shell
- shell
- furnace body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a pre-mix energy-conserving gas hot-blast furnace of direct combustion formula, relate to direct combustion formula hot-blast furnace technical field, including the furnace body shell, the combustion chamber of setting in the furnace body shell, be formed with air insulating layer between the shell of furnace body shell and combustion chamber, the left end of combustion chamber is located to the entry end of combustion chamber, the right-hand member of combustion chamber is located to the exit end of combustion chamber and communicates to the right-hand member outside of furnace body shell through an air duct, the left end of furnace body shell is provided with the combustor with the entry end intercommunication of combustion chamber, the air inlet with air insulating layer intercommunication is seted up to the right-hand member of furnace body shell, the steam that produces of burning is for turning right the combustion chamber from a left side and supplying steam, the flow direction of the air that flows through the air insulating layer on the shell of combustion chamber is for going from the right side to left side, thereby make the air that flows through the air insulating layer improve the cooling efficiency of the shell of combustion chamber, when the burning operation, the temperature of the surface of the shell of combustion chamber can drop lower, the life of combustion chamber is longer.
Description
Technical Field
The utility model relates to the technical field of direct-fired hot blast stoves, in particular to a premixed direct-fired energy-saving gas hot blast stove.
Background
The furnace body of the direct-fired hot blast furnace mainly adopts a steel shell with a refractory material lining, and the outer surface of the furnace body is in a high-temperature state for a long time, so that the refractory material or the heat insulation material on the outer surface of the furnace body is easy to fall off or is consumed quickly, and the service life is short.
In order to solve the problem that the outer surface of the furnace body is in a high-temperature state for a long time and the service life is short, the hot blast stove for cooling the outer surface of the furnace body in a self-cooling air inlet mode is developed by industrial personnel, for example, the Chinese utility model with the patent number of 201720732561.X, namely 'a high-efficiency self-cooling direct-burning hot blast stove', comprises a furnace body 2, a combustion chamber 4 arranged in the furnace body 2, a burner 6 arranged at one end (the left end in the drawing) of the furnace body 2 and communicated with the inlet end (the left end in the drawing) of the combustion chamber 4, and a mixing chamber 5 arranged at the other end (the right end in the drawing) of the furnace body 2 and communicated with the outlet end (the right end in the drawing) of the combustion chamber 4. The furnace body 2 is horizontally placed and supported by a plurality of supports 1. The outer surface of the furnace body 2 is wrapped with a heat-insulating layer 3. An air heat insulation interlayer 10 is arranged between one end (the left end in the drawing) of the furnace body 2 and the inlet end of the combustion chamber 4, and the air heat insulation interlayer 10 is communicated with the combustion chamber 4; the side wall of one end (left end in the drawing) of the furnace body 2 is provided with a cooling air inlet 21, an air inlet channel 22 is arranged between the side wall of the air inlet 21 and the end surface of the other end (left end in the drawing) of the furnace body 2, and the air inlet channel 22 is communicated with the air inlet 21 and the air heat insulation interlayer 10. When cooling combustion chamber 4, partly cooling air gets into combustion chamber 4 through air heat insulating interlayer 10, and partly cooling air cools off 4 shells in combustion chamber to effectively cool off combustion chamber 4, improve its life.
From the cooling design and the cooling direction, the cooling wind cools the outer shell of the combustion chamber 4 from left to right in the air heat insulation interlayer 10, the hot gas in the combustion chamber 4 also leaves the combustion chamber 4 from left to right for supplying hot gas, the flow direction of the cooling wind is approximately the same as the flow direction of the hot gas in the combustion chamber 4, even if a diversion spiral belt 11 is arranged between the furnace body 2 and the combustion chamber 4, the general direction of the cooling wind is from left to right after the cooling wind is guided by the diversion spiral belt 11;
from the viewpoint of cooling efficiency, the cooling efficiency of the cooling air on the outer shell of the combustion chamber 4 is optimal when the flow direction of the cooling air is completely opposite to the flow direction of the hot air in the combustion chamber 4, and therefore, it is necessary to improve the structure of the above-mentioned high-efficiency self-cooling direct-fired hot blast stove to improve the cooling efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.
In order to achieve the above object, the utility model provides a following technical scheme: the premixed direct-fired energy-saving gas hot blast stove comprises a stove body shell and a combustion chamber arranged in the stove body shell, wherein an air heat insulation layer is formed between the stove body shell and the shell of the combustion chamber, the inlet end of the combustion chamber is arranged at the left end of the combustion chamber, and the outlet end of the combustion chamber is arranged at the right end of the combustion chamber and is communicated to the outer side of the right end of the stove body shell through an air duct; the left end of the furnace body shell is provided with a burner communicated with the inlet end of the combustion chamber; the right end of the furnace body shell is provided with an air inlet communicated with the air heat insulation layer, and after air enters the air heat insulation layer from the air inlet, the flowing direction in the air heat insulation layer is from right to left.
As a further aspect of the utility model: the left end of the furnace body shell is provided with an air outlet communicated with the air heat insulation layer.
As a further aspect of the present invention: the air inlet or the air outlet is provided with a high-pressure blower.
As a further aspect of the utility model: the inlet end of the combustion chamber is provided with a fresh air inlet corresponding to the air heat insulation layer.
As a further aspect of the present invention: the air inlet or fresh air inlet is provided with a high-pressure blower.
As a further aspect of the present invention: the air inlet is annularly arranged on the air guide pipe in a sleeved mode; the inlet end of the combustion chamber is arranged in a cylindrical shape, a plurality of fresh air inlets are arranged, and the plurality of fresh air inlets are annularly arranged at the inlet end of the combustion chamber at intervals; wherein, the air duct is transversely worn out for the middle part from the right-hand member of furnace body shell, and the length direction of combustion chamber is left right direction.
As a further aspect of the present invention: the inner surface of the furnace body shell and/or the outer surface of the furnace body shell are/is provided with a heat insulation layer.
As a further aspect of the present invention: the shell of the combustion chamber is fixedly supported in the furnace body shell through the radiating fins, so that an air heat insulation layer is formed between the furnace body shell and the shell of the combustion chamber, wherein the length direction of the radiating fins is the left-right direction.
Compared with the prior art, the beneficial effects of the utility model are as follows: the steam that the burning produced in the combustion chamber supplies steam for going right the combustion chamber from a left side discharge, and the design makes the flow direction of the air that flows through the air insulating layer on the shell of combustion chamber for going right side to left side to make the air that flows through the air insulating layer improve the cooling efficiency of the shell of combustion chamber, when the burning operation, the temperature of the surface of the shell of combustion chamber can be dropped lower, makes the life of combustion chamber longer.
Drawings
Fig. 1 is a schematic top view of the cross-sectional structure of the present invention;
fig. 2 is a schematic diagram of a right-side sectional structure of the present invention;
the reference numerals and names in the figures are as follows:
the furnace body comprises a furnace body shell-1, a combustion chamber-2, an air heat-insulating layer-3, a combustor-4, an air inlet-5, a fresh air inlet-6, a heat-insulating layer-7, heat-radiating fins-8 and an air guide pipe-9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the premixed direct-fired energy-saving gas hot-blast stove comprises a stove body shell 1 and a combustion chamber 2 arranged in the stove body shell 1, wherein an air heat insulation layer 3 is formed between the stove body shell 1 and the shell of the combustion chamber 2, the inlet end of the combustion chamber 2 is arranged at the left end of the combustion chamber 2, and the outlet end of the combustion chamber 2 is arranged at the right end of the combustion chamber 2 and is communicated to the outer side of the right end of the stove body shell 1 through an air duct 9; the left end of the furnace body shell 1 is provided with a burner 4 communicated with the inlet end of the combustion chamber 2; the right end of the furnace body shell 1 is provided with an air inlet 5 communicated with the air heat-insulating layer 3, and after air enters the air heat-insulating layer 3 from the air inlet 5, the flowing direction in the air heat-insulating layer 3 is from right to left. The hot gas that the combustion produced in combustion chamber 2 is for going out combustion chamber 2 from left to right and supplying hot gas, and the design makes the flow direction of the air that flows through air insulating layer 3 on the shell of combustion chamber 2 be for from right to left to make the cooling efficiency of the air that flows through air insulating layer 3 to the shell of combustion chamber 2 improve, when the burning operation, the temperature of the surface of the shell of combustion chamber 2 can be reduced lower, makes the life of combustion chamber 2 longer.
The inner surface of the furnace body shell 1 and/or the outer surface of the furnace body shell 1 are/is provided with a heat insulation layer 7, so that the overhigh temperature of the working environment caused by the heat radiation of the furnace body is avoided.
Furthermore, the shell of the combustion chamber 2 is fixedly supported in the furnace body shell 1 through the heat dissipation fins 8, so that an air heat insulation layer 3 is formed between the furnace body shell 1 and the shell of the combustion chamber 2, wherein the length direction of the heat dissipation fins 8 is the left-right direction, and the improved cooling efficiency is better.
In the embodiment of the utility model, the gas outlet with the air insulating layer intercommunication is seted up to furnace body shell's left end. The air used for cooling the combustion chamber enters the air heat insulation layer from the air inlet and then is discharged from the air outlet, and during the period, the heat of the outer surface of the shell of the combustion chamber is driven, so that the cooling effect is achieved.
Preferably, a high pressure blower is installed at the air inlet or the air outlet. The air flow rate flowing through the air heat insulation layer in unit time is increased by the high-pressure blower so as to improve the cooling efficiency of the air heat insulation layer.
Referring to fig. 1, in the embodiment of the present invention, the inlet of the combustion chamber 2 is provided with a fresh air inlet 6 corresponding to the air insulation layer 3. The air has partly or all to supply combustion chamber 2 through fresh air entry 6 and burns after getting into air insulating layer 3 from air inlet 5, on the one hand, the air can be used to cool off the surface of the shell of combustion chamber 2 when flowing in air insulating layer 3, in order to improve its life, on the other hand, can absorb the heat and make the air heat up (preheat) when air cooling combustion chamber 2, the air that heats up supplies combustion chamber 2 through fresh air entry, make it to be easier to burn and reduce thermal loss (the heat that reduces after the surface cooling of the shell of combustion chamber has actually mostly got back to in the combustion chamber along with the air again), it is more energy-conserving.
The arrow line in fig. 1 shows the flow direction of air in the furnace body shell 1, wherein the arrow line in the middle of the furnace body shell 1 shows the flow direction of air after combustion into hot air.
The air inlet 5 is annularly arranged on the air guide pipe 9 in a sleeved mode, namely the air inlet 5 is an annular opening formed in the right end of the furnace body shell 1; the entry end of combustion chamber 2 is the cylinder setting, and fresh air entry 6 is equipped with a plurality ofly, and a plurality of fresh air entry 6 are annular interval and set up on the entry end of combustion chamber 2, and wherein, air duct 9 is for transversely wearing out from the middle part of the right-hand member of furnace body shell 1, and the length direction of combustion chamber 2 is left right direction. Through the improvement of the air inlet 5 and the fresh air inlet 6, the air in the air heat insulation layer 3 can have better cooling efficiency, and the heat accumulation phenomenon caused by the non-flowing of the air at local positions is not easy to generate. Referring to fig. 1, the air mainly flows in a straight line from right to left in the air heat insulation layer, so that the air stays in the air heat insulation layer for a short time under the condition that the flowing air can be fully contacted with the outer surface of the casing of the combustion chamber, the problem that the specific heat capacity of the air cannot meet the requirement of absorption of large heat due to long stay time is avoided, and the actual cooling efficiency is better by replacing the stay time with flow.
Preferably, a high pressure blower is installed at the air inlet or fresh air inlet. The air flow passing through the air heat insulation layer in unit time is increased through the high-pressure blower so as to improve the cooling efficiency of the air heat insulation layer.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A premixed direct-fired energy-saving gas hot blast stove comprises a stove body shell and a combustion chamber arranged in the stove body shell, wherein an air heat insulation layer is formed between the stove body shell and the shell of the combustion chamber,
the inlet end of the combustion chamber is arranged at the left end of the combustion chamber, and the outlet end of the combustion chamber is arranged at the right end of the combustion chamber and communicated to the outer side of the right end of the furnace body shell through an air duct;
the left end of the furnace body shell is provided with a burner communicated with the inlet end of the combustion chamber;
the right end of the furnace body shell is provided with an air inlet communicated with the air heat insulation layer, and after air enters the air heat insulation layer from the air inlet, the flowing direction in the air heat insulation layer is from right to left.
2. The premixed direct-fired energy-saving gas hot blast stove according to claim 1, wherein the left end of the stove body shell is provided with an air outlet communicated with the air heat insulation layer.
3. The premixed direct-fired energy-saving gas hot blast stove according to claim 2, wherein a high pressure blower is installed at the air inlet or the air outlet.
4. The premixed direct-fired energy-saving gas hot blast stove according to claim 1, wherein a fresh air inlet corresponding to the air heat insulating layer is provided at the inlet end of the combustion chamber.
5. The premixed direct-fired energy-saving gas hot blast stove according to claim 4, wherein a high pressure blower is installed at the air inlet or the fresh air inlet.
6. The premixed direct-fired energy-saving gas hot blast stove according to claim 4, wherein the gas inlet is annularly arranged to be sleeved on the gas guide pipe;
the inlet end of the combustion chamber is arranged in a cylindrical shape, a plurality of fresh air inlets are arranged, and the plurality of fresh air inlets are annularly arranged at the inlet end of the combustion chamber at intervals;
wherein, the air duct is transversely worn out for the middle part of the right-hand member from the furnace body shell, and the length direction of combustion chamber is left right direction.
7. The premixed direct-fired energy-saving gas hot blast stove according to claim 1, wherein an inner surface of the body shell and/or an outer surface of the body shell is provided with a heat insulating layer.
8. The premixed direct-fired energy-saving gas hot blast stove according to claim 1, wherein the outer shell of the combustion chamber is fixedly supported in the outer shell of the stove body through heat dissipation fins, so that an air heat insulation layer is formed between the outer shell of the stove body and the outer shell of the combustion chamber, wherein the length direction of the heat dissipation fins is the left-right direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222144366.9U CN218237866U (en) | 2022-08-15 | 2022-08-15 | Premixed direct combustion type energy-saving gas hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222144366.9U CN218237866U (en) | 2022-08-15 | 2022-08-15 | Premixed direct combustion type energy-saving gas hot-blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218237866U true CN218237866U (en) | 2023-01-06 |
Family
ID=84680998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222144366.9U Active CN218237866U (en) | 2022-08-15 | 2022-08-15 | Premixed direct combustion type energy-saving gas hot-blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218237866U (en) |
-
2022
- 2022-08-15 CN CN202222144366.9U patent/CN218237866U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201488267U (en) | Hot blast stove | |
| CN105333449B (en) | Low-carbon type smoke backflow formula steam boiler low oxygen combustion system | |
| CN101315187B (en) | Anti-flashback nozzle and combustion device with the same | |
| CN103032951B (en) | Positive displacement gas water heater | |
| CN218237866U (en) | Premixed direct combustion type energy-saving gas hot-blast stove | |
| CN108679700A (en) | A kind of self power generation blower mechanism of outdoor heater | |
| CN107504487B (en) | Continuous dispersion type combustion device and method for forming continuous dispersion type combustion | |
| CN104727976B (en) | A kind of combustion heating system of Stirling engine | |
| CN107906516A (en) | A kind of continous way Self-heat-storage flameless burner of the double preheatings of air/gas | |
| CN202254301U (en) | Gas storage water heater | |
| CN115540342A (en) | Premixed direct combustion type energy-saving gas hot-blast stove | |
| CN209068524U (en) | A kind of safe and efficient VOC direct combustion purification device | |
| CN204254678U (en) | A kind of alternating expression cooling structure of gas-turbine combustion chamber burner inner liner | |
| CN110678706B (en) | Water storage type boiler with vortex guiding part | |
| CN110285418A (en) | A kind of high efficency low NOx compact self preheating burner | |
| CN210951847U (en) | Gas water heater heated by radiation | |
| CN208804749U (en) | A kind of self power generation blower mechanism of outdoor heater | |
| CN207797383U (en) | Boiler plant and heating system | |
| CN111853768A (en) | Spiral coil cooling type low NOxPulverized coal burner | |
| JP2012007857A (en) | Radiation device | |
| CN101943475B (en) | Combustion chamber structure for heat exchanger | |
| CN201285041Y (en) | Anti-flashback nozzle and combustion device with the same | |
| CN217541526U (en) | Hot blast stove structure with flashback chamber | |
| CN214841682U (en) | Hot-blast stove | |
| CN212841553U (en) | Spiral coil pipe cooling type low NOx pulverized coal burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |