CN105387441A - Anti-burning-dry water storage device and anti-burning-dry boiler - Google Patents
Anti-burning-dry water storage device and anti-burning-dry boiler Download PDFInfo
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- CN105387441A CN105387441A CN201510862859.8A CN201510862859A CN105387441A CN 105387441 A CN105387441 A CN 105387441A CN 201510862859 A CN201510862859 A CN 201510862859A CN 105387441 A CN105387441 A CN 105387441A
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- boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/003—Emergency feed-water supply
-
- 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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Water Supply & Treatment (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses an anti-burning-dry water storage device and an anti-burning-dry boiler. The anti-burning-dry water storage device comprises a coal economizer, a water inlet pipeline and a water outlet pipeline, wherein the coal economizer is arranged in a flue of the boiler; a water inlet of the coal economizer is communicated with the water inlet pipeline; the water inlet pipeline is connected with a water feeding source and further provided with an anti-backflow mechanism; a water outlet of the coal economizer is communicated with the water outlet pipeline; the water outlet pipeline is communicated with a water inlet of the boiler and further provided with a water storage tank body, and the set height of the water storage tank body is larger than that of the coal economizer. According to the anti-burning-dry water storage device, the water storage tank body with pressure is arranged between the water inlet of the coal economizer and the water inlet of the boiler, and boiler fed water passes through the water storage tank body first and then enters the boiler. When the boiler operates normally, the water storage tank body only serves as a water feeding passage. When boiler fed water is stopped, the fed water in the water storage tank body automatically flows into the boiler under the action of gravity, fed water for cooling is supplemented to the boiler, and the boiler is effectively prevented from burning dry.
Description
Technical field
The present invention relates to boiler plant field, particularly a kind of anti-dry water-storing device and anti-dry boiler.
Background technology
When boiler loses down in working order and feeds water supplementary, even if fuel shutoff inputs, amount of stored heat in boiler still can add heat smoke, flue gas continues again the heating surface in heating boiler, heating surface because of lose feedwater supplement and can not get cooling, finally exceed the serviceability temperature that metal allows, this situation is called dry combustion method.Boiler dry combustion method can cause heating surface metal material permanent destruction, causes boiler plant to damage, brings economic loss.
Avoid boiler dry combustion method, will ensure that boiler has enough feedsupplies, until boiler is cooled to below safe temperature.Avoid boiler dry combustion method to mainly contain two kinds of means, one relies on remaining feedwater in boiler to cool.Can dum boiler be adopted below Sub-critical Parameter, in drum (being also drum) and in boiler water-wall tube, all accumulate certain feedwater, the feedwater of savings in these stoves during boiler feedwater failure of pump, can be relied on to cool.
Another kind arranges emergency feedwater pump, starts this pump to boiler replenishing water when accident occurs.When the feedwater off-capacity of drum savings, or for there is no the direct current cooker of drum, just arranging by diesel-driven emergency feedwater pump, starting emergency feedwater pump during boiler feedwater failure of pump to boiler supplementary feed, until boiler is cooled to below safe temperature.Diesel-driven emergency feedwater pump not only involves great expense, and is in stand-by state for a long time, can not start in time once fault, and boiler safety still cannot be protected to lower the temperature.
Summary of the invention
Based on this, the invention reside in the defect overcoming prior art, a kind of anti-dry water-storing device is provided, when accident occurs from trend boiler supplementary feed, boiler dry combustion method can be avoided.
Its technical scheme is as follows:
A kind of anti-dry water-storing device, comprise economizer, inlet pipeline and outlet pipeline, described economizer is arranged in the flue of boiler, the water inlet of described economizer is communicated with inlet pipeline, described inlet pipeline is connected with water supply source, described inlet pipeline is also provided with anti-backflow mechanism, the delivery port of described economizer is communicated with outlet pipeline, described outlet pipeline is communicated with the water inlet of boiler, described outlet pipeline is also provided with retaining casing, and the rational height of described retaining casing is higher than the rational height of economizer.
Wherein in an embodiment, described anti-dry water-storing device also comprises water intaking valve and outlet valve, described outlet pipeline comprises the first pipeline and the second pipeline, the delivery port of described economizer and the water inlet of retaining casing are by described first pipeline connection, the delivery port of described retaining casing and the water inlet of boiler are by described second pipeline connection, described water intaking valve is arranged on the first pipeline, and described outlet valve is arranged on the second pipeline.
Wherein in an embodiment, first node is provided with between described water intaking valve and the delivery port of economizer, between described outlet valve and the water inlet of boiler, be provided with Section Point, be communicated with the 3rd pipeline between described first node and Section Point, described 3rd pipeline is provided with transfer valve.
Wherein in an embodiment, described retaining casing is provided with vent valve.
Wherein in an embodiment, described retaining casing is also provided with discharging valve.
Wherein in an embodiment, described anti-backflow mechanism is check-valves.
The present invention also provides a kind of anti-dry boiler, comprise boiler body, flue and the anti-dry water-storing device as described in any one of claim 1-5, described flue is communicated with boiler body, described economizer is arranged in described flue, the bottom of described boiler body is provided with lower header, and described outlet pipeline is communicated with lower header.
Wherein in an embodiment, described anti-dry boiler also comprises low temperature superheater and high temperature superheater, described low temperature superheater to be arranged in flue and to be positioned at the top of described economizer, described high temperature superheater is arranged on the top of boiler body, described low temperature superheater is communicated with by intermediate duct with high temperature superheater, the top of described boiler body is also provided with drum, and described drum is communicated with by steam pipework with low temperature superheater, and described drum is communicated with by water screen tube with lower header.
Below the advantage of preceding solution or principle are described:
Above-mentioned anti-dry water-storing device, between the delivery port and the water inlet of boiler of economizer, be provided with the retaining casing with pressure, boiler feedwater first enters boiler again by retaining casing.When boiler normally runs, retaining casing only uses as the passage of feedwater; When boiler feedwater is interrupted, the feedwater in retaining casing flows in boiler under gravity automatically, supplements the feedwater of cooling, effectively avoid boiler dry combustion method to boiler.
Above-mentioned anti-dry boiler, between the delivery port and the lower header of boiler of economizer, be provided with the retaining casing with pressure, boiler feedwater first enters boiler again by retaining casing.When boiler normally runs, retaining casing only uses as the passage of feedwater; When boiler feedwater is interrupted, the feedwater in retaining casing flows in boiler under gravity automatically, supplements the feedwater of cooling, effectively avoid boiler dry combustion method to boiler.
Accompanying drawing explanation
Fig. 1 is the structural representation of the anti-dry water-storing device described in the embodiment of the present invention;
Fig. 2 is the structural representation of the anti-dry boiler described in the embodiment of the present invention.
Description of reference numerals:
1, economizer, 2, inlet pipeline, 3, outlet pipeline, 4, flue, 5, water supply source, 6, anti-backflow mechanism, 7, retaining casing, 8, transfer valve, 9, water intaking valve, 10, outlet valve, 11, vent valve, 12, discharging valve, 13, boiler body, 14, lower header, 15, low temperature superheater, 16, high temperature superheater, 17, drum.
Detailed description of the invention
Below embodiments of the invention are described in detail:
As shown in Figure 1, anti-dry water-storing device described in the present embodiment, comprise economizer 1, inlet pipeline 2 and outlet pipeline 3, described economizer 1 is arranged in the flue 4 of boiler, the water inlet of described economizer 1 is communicated with inlet pipeline 2, described inlet pipeline 2 is connected with water supply source 5, described inlet pipeline 2 is also provided with anti-backflow mechanism 6, the delivery port of described economizer 1 is communicated with outlet pipeline 3, described outlet pipeline 3 is communicated with the water inlet of boiler, described outlet pipeline 3 is also provided with retaining casing 7, the rational height of described retaining casing 7 is higher than the rational height of economizer 1.Above-mentioned anti-dry water-storing device, between the delivery port and the water inlet of boiler of economizer 1, be provided with the retaining casing 7 with pressure, boiler feedwater first enters boiler again by retaining casing 7.When boiler normally runs, retaining casing 7 only uses as the passage of feedwater; When boiler feedwater is interrupted, the feedwater in retaining casing 7 flows in boiler under gravity automatically, supplements the feedwater of cooling, effectively avoid boiler dry combustion method to boiler.
Wherein, described anti-dry water-storing device also comprises water intaking valve 9 and outlet valve 10, described outlet pipeline 3 comprises the first pipeline and the second pipeline, the delivery port of described economizer 1 and the water inlet of retaining casing 7 are by described first pipeline connection, the delivery port of described retaining casing 7 and the water inlet of boiler are by described second pipeline connection, described water intaking valve 9 is arranged on the first pipeline, and described outlet valve 10 is arranged on the second pipeline.Close water intaking valve 9 and outlet valve 10, retaining casing 7 just can carry out safeguarding or keeping in repair, convenient and reliable simultaneously.
Preferably, first node is provided with between described water intaking valve 9 and the delivery port of economizer 1, between described outlet valve 10 and the water inlet of boiler, be provided with Section Point, be communicated with the 3rd pipeline between described first node and Section Point, described 3rd pipeline is provided with transfer valve 8.When retaining casing 7 is safeguarded or keeped in repair, in order to enable boiler normally run, 3rd pipeline with transfer valve 8 in parallel between the first pipeline and second pipe.During normal operation, close transfer valve 8 and open water intaking valve 9 and outlet valve 10 simultaneously, retaining casing 7 just can come into operation; When retaining casing 7 needs to stop using or overhaul, open transfer valve 8 and close water intaking valve 9 and outlet valve 10 simultaneously, boiler can normally run.
In the present embodiment, described retaining casing 7 is provided with vent valve 11, and vent valve 11, for releasing gas, makes retaining casing 7 circulate unobstructed.Described retaining casing 7 is also provided with discharging valve 12, and opening vent valve 11 and discharging valve 12 just can water in emptying retaining casing 7, is convenient to clean retaining casing 7.Described anti-backflow mechanism 6 is check-valves, have be active in one's movements, the feature such as good seal performance, long service life.
The use procedure of above-mentioned anti-dry water-storing device is as follows: when normally running, and close transfer valve 8 and open water intaking valve 9 and outlet valve 10 simultaneously, open after inner air released by vent valve 11 and close, retaining casing 7 just can come into operation.When water supply source 5 fault can not provide feedwater, anti-backflow mechanism 6 on feedwater piping prevents to aqueous reflux, in boiler, water evaporates and pressure drop, and the feedwater in retaining casing 7 is under gravity to boiler replenishing water, until the feedwater of savings is discharged completely in retaining casing 7.Retaining casing 7 need to stop using or maintenance time, open transfer valve 8 and closes water intaking valve 9 and outlet valve 10 simultaneously, boiler can normally run, and retaining casing 7 is inactive, and now opening vent valve 11 and discharging valve 12 just can water in emptying retaining casing 7.
As shown in Figure 2, the present embodiment also provides a kind of anti-dry boiler, comprise boiler body 13, flue 4 and above-mentioned anti-dry water-storing device, described flue 4 is communicated with boiler body 13, described economizer 1 is arranged in described flue 4, the bottom of described boiler body 13 is provided with lower header 14, and described outlet pipeline 3 is communicated with lower header 14.Above-mentioned anti-dry boiler, between the delivery port and the lower header 14 of boiler of economizer 1, be provided with the retaining casing 7 with pressure, boiler feedwater first enters boiler again by retaining casing 7.When boiler normally runs, retaining casing 7 only uses as the passage of feedwater; When boiler feedwater is interrupted, the feedwater in retaining casing 7 flows in boiler under gravity automatically, supplements the feedwater of cooling, effectively avoid boiler dry combustion method to boiler.
Wherein, described anti-dry boiler also comprises low temperature superheater 15 and high temperature superheater 16, described low temperature superheater 15 to be arranged in flue 4 and to be positioned at the top of described economizer 1, described high temperature superheater 16 is arranged on the top of boiler body 13, described low temperature superheater 15 is communicated with by intermediate duct with high temperature superheater 16, the top of described boiler body 13 is also provided with drum 17, described drum 17 is communicated with by steam pipework with low temperature superheater 15, and described drum 17 is communicated with by water screen tube with lower header 14.Saturated vapor can be heated into superheated steam by low temperature superheater 15 and high temperature superheater 16, reduces flue gas loss, improves boiler thermal output.
Because retaining casing 7 is without control device initiatively and protective device, driving force is feedwater self gravitation, has very high reliability.Retaining casing 7 can be arranged on outlet conduit and rational height higher than on any one position of economizer 1; no matter be the position changing retaining casing 7; or be change its connected mode that is in parallel or series connection; as long as under being in operating pressure in running; and rely on gravity that feedwater is flow automatically to enter boiler; just belong to the thinking consistent with this programme, should be protected.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. an anti-dry water-storing device, it is characterized in that, comprise economizer, inlet pipeline and outlet pipeline, described economizer is arranged in the flue of boiler, the water inlet of described economizer is communicated with inlet pipeline, described inlet pipeline is connected with water supply source, described inlet pipeline is also provided with anti-backflow mechanism, the delivery port of described economizer is communicated with outlet pipeline, described outlet pipeline is communicated with the water inlet of boiler, described outlet pipeline is also provided with retaining casing, and the rational height of described retaining casing is higher than the rational height of economizer.
2. anti-dry water-storing device according to claim 1, it is characterized in that, also comprise water intaking valve and outlet valve, described outlet pipeline comprises the first pipeline and the second pipeline, the delivery port of described economizer and the water inlet of retaining casing are by described first pipeline connection, the delivery port of described retaining casing and the water inlet of boiler are by described second pipeline connection, and described water intaking valve is arranged on the first pipeline, and described outlet valve is arranged on the second pipeline.
3. anti-dry water-storing device according to claim 2, it is characterized in that, first node is provided with between described water intaking valve and the delivery port of economizer, Section Point is provided with between described outlet valve and the water inlet of boiler, be communicated with the 3rd pipeline between described first node and Section Point, described 3rd pipeline is provided with transfer valve.
4. the anti-dry water-storing device according to any one of claim 1-3, is characterized in that, described retaining casing is provided with vent valve.
5. anti-dry water-storing device according to claim 4, is characterized in that, described retaining casing is also provided with discharging valve.
6. anti-dry water-storing device according to claim 5, is characterized in that, described anti-backflow mechanism is check-valves.
7. an anti-dry boiler, it is characterized in that, comprise boiler body, flue and the anti-dry water-storing device as described in any one of claim 1-6, described flue is communicated with boiler body, described economizer is arranged in described flue, the bottom of described boiler body is provided with lower header, and described outlet pipeline is communicated with lower header.
8. anti-dry boiler according to claim 7, it is characterized in that, also comprise low temperature superheater and high temperature superheater, described low temperature superheater to be arranged in flue and to be positioned at the top of described economizer, described high temperature superheater is arranged on the top of boiler body, and described low temperature superheater is communicated with by intermediate duct with high temperature superheater, and the top of described boiler body is also provided with drum, described drum is communicated with by steam pipework with low temperature superheater, and described drum is communicated with by water screen tube with lower header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510862859.8A CN105387441B (en) | 2015-11-30 | 2015-11-30 | Anti-dry water-storing device and anti-dry boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510862859.8A CN105387441B (en) | 2015-11-30 | 2015-11-30 | Anti-dry water-storing device and anti-dry boiler |
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| CN105387441A true CN105387441A (en) | 2016-03-09 |
| CN105387441B CN105387441B (en) | 2018-09-25 |
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| CN201510862859.8A Active CN105387441B (en) | 2015-11-30 | 2015-11-30 | Anti-dry water-storing device and anti-dry boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322349A (en) * | 2016-09-19 | 2017-01-11 | 河南省锅炉压力容器安全检测研究院 | Dry burning-resistant safe operation method of boiler |
| CN108548004A (en) * | 2018-04-03 | 2018-09-18 | 中山活水来智慧物联网有限责任公司 | A kind of instant heating type tap with burning prevention function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202132932U (en) * | 2011-04-01 | 2012-02-01 | 中国化工橡胶株洲研究设计院 | Boiler waste heat recovery water device |
| CN202791969U (en) * | 2012-09-06 | 2013-03-13 | 蔡军 | Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device |
| CN103343955A (en) * | 2013-07-25 | 2013-10-09 | 南京凯盛开能环保能源有限公司 | Comprehensive recycling boiler device of extra coal gas and saturated steam of steel plant |
| CN103398470A (en) * | 2013-07-26 | 2013-11-20 | 江苏双良锅炉有限公司 | Condensing-type efficient atmospheric-pressure hot water boiler system |
| CN205208542U (en) * | 2015-11-30 | 2016-05-04 | 中国能源建设集团广东省电力设计研究院有限公司 | Prevent dry combustion method water storage device and prevent dry combustion method boiler |
-
2015
- 2015-11-30 CN CN201510862859.8A patent/CN105387441B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202132932U (en) * | 2011-04-01 | 2012-02-01 | 中国化工橡胶株洲研究设计院 | Boiler waste heat recovery water device |
| CN202791969U (en) * | 2012-09-06 | 2013-03-13 | 蔡军 | Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device |
| CN103343955A (en) * | 2013-07-25 | 2013-10-09 | 南京凯盛开能环保能源有限公司 | Comprehensive recycling boiler device of extra coal gas and saturated steam of steel plant |
| CN103398470A (en) * | 2013-07-26 | 2013-11-20 | 江苏双良锅炉有限公司 | Condensing-type efficient atmospheric-pressure hot water boiler system |
| CN205208542U (en) * | 2015-11-30 | 2016-05-04 | 中国能源建设集团广东省电力设计研究院有限公司 | Prevent dry combustion method water storage device and prevent dry combustion method boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322349A (en) * | 2016-09-19 | 2017-01-11 | 河南省锅炉压力容器安全检测研究院 | Dry burning-resistant safe operation method of boiler |
| CN108548004A (en) * | 2018-04-03 | 2018-09-18 | 中山活水来智慧物联网有限责任公司 | A kind of instant heating type tap with burning prevention function |
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| Publication number | Publication date |
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| CN105387441B (en) | 2018-09-25 |
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