CN109973984B - Water-cooled back smoke box for boiler - Google Patents
Water-cooled back smoke box for boiler Download PDFInfo
- Publication number
- CN109973984B CN109973984B CN201910344631.8A CN201910344631A CN109973984B CN 109973984 B CN109973984 B CN 109973984B CN 201910344631 A CN201910344631 A CN 201910344631A CN 109973984 B CN109973984 B CN 109973984B
- Authority
- CN
- China
- Prior art keywords
- smoke box
- rear smoke
- cylinder body
- water
- end cover
- 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
- 239000000779 smoke Substances 0.000 title claims abstract description 140
- 239000010410 layer Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000498 cooling water Substances 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 11
- 239000011229 interlayer Substances 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 13
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 abstract description 7
- 239000002918 waste heat Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
Abstract
The invention relates to a water-cooled rear smoke box for a boiler, which comprises a rear smoke box cylinder body, a fire-resistant layer, a rear smoke box flange, a smoke box end cover, a fixing frame, a rear smoke box top plate and a heat insulation layer, wherein a water jacket interlayer is arranged between the rear smoke box cylinder body and the smoke box end cover, and cooling water is filled in the water jacket interlayer so as to cool the outside of the rear smoke box cylinder body at high temperature; the connecting pipe is communicated with a condenser arranged above the rear smoke box cylinder body. The invention has reasonable structure and built-in water cooling structure, effectively reduces the temperature of the outer wall of the rear smoke box body by cooling water, can be used for cooling and internal circulation, can be externally connected with a circulating boiler for water inflow, can also be used for hot water taking, solves the technical problems that the rear smoke box of the existing gas boiler is generally a dry rear smoke box, waste heat temperature is wasted, the outer wall of the rear smoke box body is damaged due to overhigh temperature, the service life of the rear smoke box body is influenced and the like, and has good market prospect and development space for the prior art.
Description
Technical Field
The invention relates to the technical field of industrial gas or oil fired boiler equipment, in particular to a water-cooled rear smoke box for a boiler.
Background
With the development of technology and the improvement of the living standard of people, the gas boiler is widely applied to industries such as steam, heating, food processing and the like. The natural gas, the urban gas, the coke oven gas, the liquefied petroleum gas and the biogas are generally adopted as fuels, the combustion heat value is high, in the traditional boiler, the temperature of discharged smoke is relatively high after the fuel is combusted in the boiler, and water vapor in the discharged smoke is still in a gaseous state and can take away a large amount of heat.
The back smoke box of general common gas boiler is the dry-type back smoke box generally, sets up at smoke box exit end and prevents high temperature material, generally commonly is high temperature resistant concrete etc. and back smoke box will burn the waste heat exhaust gas after going out, and heat utilization ratio is lower like this, has wasted waste heat, and on the other hand also can cause harm to back smoke box outer wall owing to the too high temperature of waste heat, and back smoke box can take place expend with heat and contract with cold reaction for a long time under the too high temperature, influences back smoke box's life.
How to design a rational in infrastructure, design benefit, built-in water-cooling structure through the smoke box behind the cooling water cooling, effectively reduces back smoke box outer wall temperature, and the cooling water can be as the internal recycle, and the smoke box is the problem that needs to solve at present behind the water-cooled of the boiler that also can external recycle was used.
Disclosure of Invention
The invention provides a water-cooled back smoke box for a boiler, which is reasonable in structure, ingenious in design, internally provided with a water-cooling structure, capable of effectively reducing the temperature of the outer wall of the back smoke box body, enabling cooling water to be used in a cooling internal circulation mode, and also enabling an external circulation boiler to enter water for use, and achieving the purpose of using hot water.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water-cooled rear smoke box for a boiler comprises a rear smoke box cylinder body, a fire-resistant layer, a rear smoke box flange, a smoke box end cover, a fixing frame, a rear smoke box top plate and a heat insulation layer, wherein the heat insulation layer is positioned on the inner wall of the rear smoke box cylinder body, and the fire-resistant layer is positioned on the inner side of the heat insulation layer; a water jacket interlayer is arranged between the rear smoke box cylinder body and the smoke box end cover, the thickness of the water jacket interlayer is 50-80mm, and cooling water is filled in the water jacket interlayer so as to cool down the outer parts of the rear smoke box cylinder body and the smoke box end cover at high temperature; the edge of the smoke box end cover is fixedly connected with the rear smoke box flange through a first bolt; the rear part of the rear smoke box cylinder body is provided with a fire partition wall, and the rear part of the fire partition wall is provided with explosion-proof holes; the middle part of the rear smoke box cylinder body is provided with a horizontal partition plate so as to divide the cavity part of the rear smoke box cylinder body into an upper cavity and a lower cavity, wherein one side of the upper cavity is provided with a condensate pipe extending to the outside of the rear smoke box cylinder body; the smoke box end cover is provided with a connecting pipe, the connecting pipe is communicated with a condenser arranged above the rear smoke box cylinder body, and the bottom of the condenser is fixedly connected with a rear smoke box top plate of the rear smoke box cylinder body through a second bolt.
The smoke box end cover is provided with a handle for grasping.
The heat insulation layer is made of aluminum silicate fiber plates.
The fireproof layer and the fire-proof wall are made of fireproof concrete.
Compared with the prior art, the invention has the beneficial effects that:
1) The fire-resistant and heat-insulating smoke box comprises a rear smoke box barrel, a fire-resistant layer, a rear smoke box flange, a smoke box end cover, a fixing frame, a rear smoke box top plate and a heat-insulating layer, wherein the heat-insulating layer is positioned on the inner wall of the rear smoke box barrel, and the fire-resistant layer is positioned on the inner side of the heat-insulating layer; the invention discards the traditional dry-type rear smoke box structure, and the rear smoke box is cooled by cooling water through the built-in water cooling structure, so that the temperature of the outer wall of the rear smoke box body is effectively reduced, the temperature of the outer wall is between 40 and 60 ℃, the cooling water can be used for cooling internal circulation, and the cooling water can be externally connected for circulating boiler water inlet use, and can also be used for hot water taking;
2) The edge of the smoke box end cover is fixedly connected with the rear smoke box flange through a first bolt; the rear part of the rear smoke box cylinder body is provided with a fire partition wall, and the rear part of the fire partition wall is provided with explosion-proof holes; the middle part of the rear smoke box cylinder body is provided with a horizontal partition plate so as to divide the cavity part of the rear smoke box cylinder body into an upper cavity and a lower cavity, wherein one side of the upper cavity is provided with a condensate pipe extending to the outside of the rear smoke box cylinder body;
3) The smoke box end cover is provided with a connecting pipe, the connecting pipe is communicated with a condenser arranged above the rear smoke box cylinder, the bottom of the condenser is fixedly connected with a rear smoke box top plate of the rear smoke box cylinder through a second bolt, high-temperature smoke with reduced temperature is further absorbed by cooling water in the condenser arranged above the rear smoke box, and the heat energy utilization efficiency is improved to the greatest extent;
4) The heat insulation layer is made of aluminum silicate fiber plates, the aluminum silicate fiber plates are easy to obtain in material and low in cost, the heat insulation effect is good, heat is effectively insulated in the rear smoke box body, and heat dissipation is reduced;
5) The fireproof layer and the fire-proof wall are made of fireproof concrete, the fireproof concrete material is easy to obtain, the cost is low, and the fireproof effect is good.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of the invention in the A-A direction;
the marks in the figure: 1. the fire-proof smoke box comprises a rear smoke box barrel body 2, a first bolt 3, a fire-proof layer, a connecting pipe 4, a 5, a rear smoke box flange, a 6, a smoke box end cover 7, a handle 8, explosion-proof holes 9, a fire-proof wall 10, a second bolt 11, a fixing frame 12, a rear smoke box top plate 13, a condensate pipe 14, a partition plate 15 and a heat insulation layer.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
As shown in the figure, the water-cooled rear smoke box for the boiler comprises a rear smoke box cylinder body 1, a fire-resistant layer 3, a rear smoke box flange 5, a smoke box end cover 6, a fixing frame 11, a rear smoke box top plate 12 and a heat insulation layer 15, wherein the heat insulation layer 15 is positioned on the inner wall of the rear smoke box cylinder body 1, and the fire-resistant layer 3 is positioned on the inner side of the heat insulation layer 15; a water jacket interlayer is arranged between the rear smoke box cylinder body 1 and the smoke box end cover 6, the thickness of the water jacket interlayer is 50-80mm, and cooling water is filled in the water jacket interlayer so as to cool the outer parts of the exposed parts of the rear smoke box cylinder body 1 and the smoke box end cover 6 at high temperature; the edge of the smoke box end cover 6 is fixedly connected with the rear smoke box flange 5 through a first bolt 2; the rear part of the rear smoke box cylinder body 1 is provided with a fire partition wall 9, and an explosion-proof hole 8 is arranged behind the fire partition wall 9; the middle part of the rear smoke box cylinder body 1 is provided with a horizontal partition plate 14 to divide the cavity part of the rear smoke box cylinder body 1 into an upper cavity and a lower cavity, wherein one side of the upper cavity is provided with a condensate pipe 13 extending to the outside of the rear smoke box cylinder body 1; the smoke box end cover 6 is provided with a connecting pipe 4, the connecting pipe 4 is communicated with a condenser arranged above the rear smoke box cylinder body 1, and the bottom of the condenser is fixedly connected with a rear smoke box top plate 12 of the rear smoke box cylinder body 1 through a second bolt 10.
The above is a basic embodiment of the present invention, and further improvements, improvements and limitations may be made on the above: a handle 7 for gripping is provided on the smoke box end cap 6 as described.
The above is a basic embodiment of the present invention, and further improvements, improvements and limitations may be made on the above: the heat insulation layer 15 is made of aluminum silicate fiber board.
The above is a basic embodiment of the present invention, and further improvements, improvements and limitations may be made on the above: the refractory layer 3 and the fire-proof wall 9 are made of refractory concrete.
The invention discards the traditional dry type rear smoke box structure, and the rear smoke box is cooled by the cooling water through the built-in water cooling structure, so that the temperature of the outer wall of the rear smoke box body is effectively reduced, the cooling water can be used for cooling internal circulation, and the cooling water can be externally connected with the circulating boiler for water inlet and can also be used for hot water.
Be provided with the connecting pipe on the smoke box end cover, the connecting pipe communicates with the condenser that sets up in back smoke box barrel top, and the bottom of condenser passes through second bolt and back smoke box roof fixed connection of back smoke box barrel, makes the high temperature flue gas that passes through further by the inside cooling water absorption of condenser that back smoke box top set up, furthest's improvement heat energy availability factor.
In practical application, the material of thermal-insulated heat preservation is aluminium silicate fiberboard, and aluminium silicate fiberboard material is easy to obtain, low cost, and heat preservation effect is good moreover, and is effectual to the heat preservation in the back smoke box, reduces heat dissipation.
The invention has reasonable structure and ingenious design, the built-in water cooling structure, the temperature of the outer wall of the rear smoke box body is effectively reduced by cooling the rear smoke box with cooling water, the cooling water can be used for cooling and internal circulation, the cooling water can be externally connected with a circulating boiler for water inlet use, and hot water can be used, so that the technical problems that the rear smoke box of the existing gas-fired boiler is generally a dry rear smoke box, high-temperature-resistant materials are arranged at the outlet end of the smoke box, and are generally high-temperature-resistant concrete and the like, the rear smoke box discharges waste heat and waste gas after combustion, so that the heat utilization rate is lower, waste heat is lost due to white heat, on the other hand, the outer wall of the rear smoke box body is endangered due to the too high temperature of the waste heat, the thermal expansion reaction can occur when the rear smoke box body is in the too high temperature for a long time, the service life of the rear smoke box body is influenced, and the like are solved, and the invention has good market prospect and development space for the prior art.
While the preferred embodiments and examples of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and examples, and various changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (1)
1. A smoke box behind water-cooled that boiler was used, its characterized in that: the fire-resistant and heat-insulating type smoke box comprises a rear smoke box barrel (1), a fire-resistant layer (3), a rear smoke box flange (5), a smoke box end cover (6), a fixing frame (11), a rear smoke box top plate (12) and a heat-insulating layer (15), wherein the heat-insulating layer (15) is positioned on the inner wall of the rear smoke box barrel (1), and the fire-resistant layer (3) is positioned on the inner side of the heat-insulating layer (15); a water jacket interlayer is arranged between the rear smoke box cylinder body (1) and the smoke box end cover (6), the thickness of the water jacket interlayer is 50-80mm, and cooling water is filled in the water jacket interlayer so as to cool the outer parts of the exposed parts of the rear smoke box cylinder body (1) and the smoke box end cover (6) at high temperature; the edge of the smoke box end cover (6) is fixedly connected with the rear smoke box flange (5) through a first bolt (2); the rear part of the rear smoke box cylinder body (1) is provided with a fire partition wall (9), and an explosion-proof hole (8) is arranged behind the fire partition wall (9); the middle part of the rear smoke box cylinder body (1) is provided with a horizontal partition plate (14) so as to divide a cavity part of the rear smoke box cylinder body (1) into an upper cavity and a lower cavity, wherein one side of the upper cavity is provided with a condensate pipe (13) extending to the outside of the rear smoke box cylinder body (1); the smoke box end cover (6) is provided with a connecting pipe (4), the connecting pipe (4) is communicated with a condenser arranged above the rear smoke box cylinder body (1), and the bottom of the condenser is fixedly connected with a rear smoke box top plate (12) of the rear smoke box cylinder body (1) through a second bolt (10); a handle (7) for gripping is arranged on the smoke box end cover (6); the heat insulation layer (15) is made of aluminum silicate fiber plates; the fireproof layer (3) and the fire-proof wall (9) are made of fireproof concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344631.8A CN109973984B (en) | 2019-04-26 | 2019-04-26 | Water-cooled back smoke box for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344631.8A CN109973984B (en) | 2019-04-26 | 2019-04-26 | Water-cooled back smoke box for boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109973984A CN109973984A (en) | 2019-07-05 |
| CN109973984B true CN109973984B (en) | 2024-02-27 |
Family
ID=67086558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910344631.8A Active CN109973984B (en) | 2019-04-26 | 2019-04-26 | Water-cooled back smoke box for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973984B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0046248A2 (en) * | 1980-08-19 | 1982-02-24 | Suxe Combustion Limited | Improvements in or relating to furnaces |
| US4418649A (en) * | 1982-11-02 | 1983-12-06 | Purvis James E | Boiler structure |
| DE3315258A1 (en) * | 1983-04-27 | 1984-10-31 | Etablissement Agura, Vaduz | Spiral ring heating boiler |
| CN202002073U (en) * | 2011-01-21 | 2011-10-05 | 徐灿召 | Micro-pressure high-temperature draught furnace |
| CN202485201U (en) * | 2012-03-14 | 2012-10-10 | 河北群翔采暖设备有限公司 | Coal or biomass numerical-control boiler |
| CN203642145U (en) * | 2013-11-15 | 2014-06-11 | 安阳方快锅炉有限公司 | Large condensing shell superheated steam boiler |
| CN204612167U (en) * | 2015-03-16 | 2015-09-02 | 山西吉祥锅炉制造有限公司 | A kind of vacuum hot water boiler of built-in condenser |
| CN106949448A (en) * | 2017-05-09 | 2017-07-14 | 吉林省圣诺尔新能源科技股份有限公司 | A kind of helical blade type flue tube boiler |
| CN207963148U (en) * | 2018-03-22 | 2018-10-12 | 山西老万生态炉业股份有限公司 | A kind of small-sized low nitrogen gas fired-boiler |
| CN210014347U (en) * | 2019-04-26 | 2020-02-04 | 平顶山市百阳丰机械制造有限公司 | Water-cooled rear smoke box for boiler |
-
2019
- 2019-04-26 CN CN201910344631.8A patent/CN109973984B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0046248A2 (en) * | 1980-08-19 | 1982-02-24 | Suxe Combustion Limited | Improvements in or relating to furnaces |
| US4418649A (en) * | 1982-11-02 | 1983-12-06 | Purvis James E | Boiler structure |
| DE3315258A1 (en) * | 1983-04-27 | 1984-10-31 | Etablissement Agura, Vaduz | Spiral ring heating boiler |
| CN202002073U (en) * | 2011-01-21 | 2011-10-05 | 徐灿召 | Micro-pressure high-temperature draught furnace |
| CN202485201U (en) * | 2012-03-14 | 2012-10-10 | 河北群翔采暖设备有限公司 | Coal or biomass numerical-control boiler |
| CN203642145U (en) * | 2013-11-15 | 2014-06-11 | 安阳方快锅炉有限公司 | Large condensing shell superheated steam boiler |
| CN204612167U (en) * | 2015-03-16 | 2015-09-02 | 山西吉祥锅炉制造有限公司 | A kind of vacuum hot water boiler of built-in condenser |
| CN106949448A (en) * | 2017-05-09 | 2017-07-14 | 吉林省圣诺尔新能源科技股份有限公司 | A kind of helical blade type flue tube boiler |
| CN207963148U (en) * | 2018-03-22 | 2018-10-12 | 山西老万生态炉业股份有限公司 | A kind of small-sized low nitrogen gas fired-boiler |
| CN210014347U (en) * | 2019-04-26 | 2020-02-04 | 平顶山市百阳丰机械制造有限公司 | Water-cooled rear smoke box for boiler |
Non-Patent Citations (1)
| Title |
|---|
| 带湿背式回燃室的三回程HCJ型水套加热炉;陈鲁 等;油气田地面工程;全文 * |
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| Publication number | Publication date |
|---|---|
| CN109973984A (en) | 2019-07-05 |
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