CN105387441B - Anti-dry water-storing device and anti-dry boiler - Google Patents
Anti-dry water-storing device and anti-dry boiler Download PDFInfo
- Publication number
- CN105387441B CN105387441B CN201510862859.8A CN201510862859A CN105387441B CN 105387441 B CN105387441 B CN 105387441B CN 201510862859 A CN201510862859 A CN 201510862859A CN 105387441 B CN105387441 B CN 105387441B
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- water
- boiler
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- economizer
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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 a kind of anti-dry water-storing device and anti-dry boilers, the anti-dry water-storing device includes economizer, inlet pipeline and outlet pipeline, economizer is arranged in the flue of boiler, the water inlet of economizer is connected to inlet pipeline, inlet pipeline is connected with water supply source, anti-backflow mechanism is additionally provided on inlet pipeline, the water outlet of economizer is connected to outlet pipeline, outlet pipeline is connected to the water inlet of boiler, water storage babinet is additionally provided on outlet pipeline, the setting height of water storage babinet is higher than the setting height of economizer.Above-mentioned anti-dry water-storing device, is provided with the water storage babinet with pressure between the water outlet of economizer and the water inlet of boiler, and boiler feedwater first passes through water storage babinet and enters back into boiler.In boiler normal operation, water storage babinet is only used as the channel of water supply；When boiler feedwater is interrupted, the water supply in water storage box body automatically flows into boiler under the effect of gravity, and the water supply cooling to boiler supplement effectively avoids boiler dry combustion method.
Description
Technical field
The present invention relates to boiler plant field, more particularly to a kind of anti-dry water-storing device and anti-dry boiler.
Background technology
When boiler loses water supply supplement in the operating condition, even if fuel shutoff inputs, the amount of stored heat in boiler still can
Flue gas is heated, flue gas continues the heating surface in heating boiler again, and heating surface cannot cool down because losing water supply supplement, finally surpass
The temperature in use of metal permission is crossed, such case is known as dry combustion method.Boiler dry combustion method can lead to heating surface metal material permanent destruction, make
It is damaged at boiler plant, brings economic loss.
Boiler dry combustion method is avoided it is necessary to ensure that boiler has enough feedsupplies, until boiler be cooled to safe temperature with
Under.Avoiding boiler dry combustion method, there are mainly two types of means, and one is cooled down by remaining water supply in boiler.In Sub-critical Parameter
It may be used dum boiler below, certain water supply, boiler all accumulated in drum (being also drum) and in boiler water-wall tube
The water supply put aside in these stoves can be relied on to be cooled down when water supply failure of pump.
Another kind is that setting emergency feedwater pumps, and starts the pump when accident occurs to boiler replenishing water.When giving for drum savings
Water capacity is insufficient, or for the direct current cooker of not drum, and just setting is pumped by diesel-driven emergency feedwater, boiler feedwater
Start emergency feedwater when failure of pump to pump to boiler supplementary feed, until boiler is cooled to safe temperature or less.It is diesel-driven
Emergency feedwater pump not only involves great expense, but also is chronically at stand-by state, cannot start in time when failure, can not still protect
Protect boiler safety cooling.
Invention content
Based on this, the invention reside in overcoming the deficiencies of existing technologies, a kind of anti-dry water-storing device is provided, it can be in accident
From trend boiler supplementary feed when generation, boiler dry combustion method is avoided.
Its technical solution is as follows：
A kind of anti-dry water-storing device, including economizer, inlet pipeline and outlet pipeline, the economizer are arranged in boiler
Flue in, the water inlet of the economizer is connected to inlet pipeline, and the inlet pipeline is connected with water supply source, the water inlet
Anti-backflow mechanism is additionally provided on pipeline, the water outlet of the economizer is connected to outlet pipeline, the outlet pipeline and boiler
Water inlet is connected to, and water storage babinet, setting height the setting higher than economizer of the water storage babinet are additionally provided on the outlet pipeline
Set height.
The anti-dry water-storing device further includes inlet valve and outlet valve, the outlet pipe in one of the embodiments,
Road includes the first pipeline and the second pipeline, and the water outlet of the economizer passes through first pipeline with the water inlet of water storage babinet
Connection, the water outlet of the water storage babinet and the water inlet of boiler are existed by second pipeline connection, the inlet valve setting
On first pipeline, the outlet valve is arranged on the second pipeline.
First node is equipped between the inlet valve and the water outlet of economizer in one of the embodiments, in institute
It states and is equipped with second node between outlet valve and the water inlet of boiler, third pipe is communicated between the first node and second node
Road, the third pipeline are equipped with switching valve.
The water storage babinet is equipped with vent valve in one of the embodiments,.
In one of the embodiments, discharging valve is additionally provided on the water storage babinet.
The anti-backflow mechanism is check-valves in one of the embodiments,.
The present invention also provides a kind of anti-dry boiler, including boiler body, flue and as described in claim any one of 1-5
Anti-dry water-storing device, the flue is connected to boiler body, and the economizer is arranged in the flue, the boiler sheet
The bottom of body is equipped with lower header, and the outlet pipeline is connected to lower header.
The anti-dry boiler further includes low temperature superheater and high temperature superheater in one of the embodiments, described low
Warm superheater is arranged in flue and positioned at the top of the economizer, and the high temperature superheater is arranged on the top of boiler body
Portion, the low temperature superheater are connected to high temperature superheater by intermediate duct, and drum, institute are additionally provided at the top of the boiler body
It states drum to be connected to by steam pipework with low temperature superheater, the drum is connected to lower header by water screen tube.
The advantages of below to preceding solution or principle illustrate：
Above-mentioned anti-dry water-storing device is provided between the water outlet of economizer and the water inlet of boiler with pressure
Water storage babinet, boiler feedwater first pass through water storage babinet and enter back into boiler.In boiler normal operation, water storage babinet is only used as water supply
Channel use；When boiler feedwater is interrupted, the water supply in water storage box body automatically flows into boiler under the effect of gravity, to boiler
Cooling water supply is supplemented, boiler dry combustion method is effectively avoided.
Above-mentioned anti-dry boiler is provided with the water storage with pressure between the water outlet of economizer and the lower header of boiler
Babinet, boiler feedwater first pass through water storage babinet and enter back into boiler.In boiler normal operation, water storage babinet is only as the logical of water supply
Road uses；When boiler feedwater is interrupted, the water supply in water storage box body automatically flows into boiler under the effect of gravity, is supplemented to boiler
Cooling water supply, effectively avoids boiler dry combustion method.
Description of the drawings
Fig. 1 is the structural schematic diagram of the anti-dry water-storing device described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the anti-dry boiler described in the embodiment of the present invention.
Reference sign：
1, economizer, 2, inlet pipeline, 3, outlet pipeline, 4, flue, 5, water supply source, 6, anti-backflow mechanism, 7, water storage
Babinet, 8, switching valve, 9, inlet 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.
Specific implementation mode
The embodiment of the present invention is described in detail below：
As shown in Figure 1, the anti-dry water-storing device described in the present embodiment, including economizer 1, inlet pipeline 2 and outlet pipe
Road 3, the economizer 1 are arranged in the flue 4 of boiler, and the water inlet of the economizer 1 is connected to inlet pipeline 2, it is described into
Water lines 2 are connected with water supply source 5, are additionally provided with anti-backflow mechanism 6 on the inlet pipeline 2, the water outlet of the economizer 1 with
Outlet pipeline 3 is connected to, and the outlet pipeline 3 is connected to the water inlet of boiler, and water storage babinet 7 is additionally provided on the outlet pipeline 3,
The setting height of the water storage babinet 7 is higher than the setting height of economizer 1.Above-mentioned anti-dry water-storing device, in going out for economizer 1
The water storage babinet 7 with pressure is provided between the mouth of a river and the water inlet of boiler, boiler feedwater first passes through water storage babinet 7 and enters back into
Boiler.In boiler normal operation, water storage babinet 7 is only used as the channel of water supply；When boiler feedwater is interrupted, water storage babinet
Water supply in 7 automatically flows into boiler under the effect of gravity, and the water supply cooling to boiler supplement effectively avoids boiler dry combustion method.
Wherein, the anti-dry water-storing device further includes inlet valve 9 and outlet valve 10, and the outlet pipeline 3 includes first
Pipeline and the second pipeline, the water outlet of the economizer 1 pass through first pipeline connection, institute with the water inlet of water storage babinet 7
The water outlet of water storage babinet 7 and the water inlet of boiler are stated by second pipeline connection, the setting of the inlet valve 9 is in the first pipe
On the road, the outlet valve 10 is arranged on the second pipeline.Simultaneously close off inlet valve 9 and outlet valve 10, water storage babinet 7 can be into
Row is safeguarded or repair, convenient and reliable.
Preferably, first node is equipped between the inlet valve 9 and the water outlet of economizer 1, in the outlet valve 10
It is equipped with second node between the water inlet of boiler, third pipeline is communicated between the first node and second node, it is described
Third pipeline is equipped with switching valve 8.When water storage babinet 7 is safeguarded or is repaired, in order to enable boiler normal operation, the
The third pipeline with switching valve 8 in parallel between one pipeline and the second pipeline.When normal operation, closes switching valve 8 and beat simultaneously
Drive water valve 9 and outlet valve 10 into, water storage babinet 7 can come into operation；When water storage babinet 7 needs to deactivate or overhaul, open
Switching valve 8 simultaneously closes off inlet valve 9 and outlet valve 10, and boiler can normal operation.
In the present embodiment, the water storage babinet 7 is equipped with vent valve 11, and vent valve 11 makes water storage for releasing gas
Babinet 7 recycles unobstructed.Discharging valve 12 is additionally provided on the water storage babinet 7, opening vent valve 11 and discharging valve 12 can be vented
Water in water storage babinet 7, convenient for being cleaned to water storage babinet 7.The anti-backflow mechanism 6 is check-valves, has action spirit
The features such as quick, good seal performance, long service life.
Above-mentioned anti-dry water-storing device use process is as follows：When normal operation, closes switching valve 8 and open simultaneously inlet valve
9 and outlet valve 10, it opens after vent valve 11 releases inner air and closes, water storage babinet 7 can come into operation.Work as water supply source
When 5 failures cannot provide water supply, the anti-backflow mechanism 6 on inlet pipeline 2 is prevented to aqueous reflux, boiler memory water evaporation and pressure
Power declines, and the water supply in water storage babinet 7 is under the effect of gravity to boiler replenishing water, until the water supply put aside in water storage babinet 7 is complete
Discharge.When water storage babinet 7 needs to deactivate or overhaul, opens switching valve 8 and simultaneously close off inlet valve 9 and outlet valve 10, boiler can
Normal operation, water storage babinet 7 deactivate, and the water in water storage babinet 7 can be vented by opening vent valve 11 and discharging valve 12 at this time.
As shown in Fig. 2, the present embodiment also provides a kind of anti-dry boiler, including boiler body 13, flue 4 and above-mentioned anti-dry
Water-storing device is burnt, the flue 4 is connected to boiler body 13, and the economizer 1 is arranged in the flue 4, the boiler sheet
The bottom of body 13 is equipped with lower header 14, and the outlet pipeline 3 is connected to lower header 14.Above-mentioned anti-dry boiler, in economizer 1
The water storage babinet 7 with pressure is provided between water outlet and the lower header 14 of boiler, boiler feedwater first passes through water storage babinet 7 again
Into boiler.In boiler normal operation, water storage babinet 7 is only used as the channel of water supply；When boiler feedwater is interrupted, water storage
Water supply in babinet 7 automatically flows into boiler under the effect of gravity, and the water supply cooling to boiler supplement effectively avoids boiler dry
It burns.
Wherein, the anti-dry boiler further includes low temperature superheater 15 and high temperature superheater 16, the low temperature superheater 15
It is arranged in flue 4 and positioned at the top of the economizer 1, the high temperature superheater 16 is arranged at the top of boiler body 13,
The low temperature superheater 15 is connected to high temperature superheater 16 by intermediate duct, and the top of the boiler body 13 is additionally provided with drum
17, the drum 17 is connected to low temperature superheater 15 by steam pipework, and the drum 17 passes through water screen tube with lower header 14
Connection.Saturated vapor can be heated into superheated steam by low temperature superheater 15 and high temperature superheater 16, reduce flue gas loss, be improved
Boiler thermal efficiency.
Due to control device and protective device of the water storage babinet 7 without active, driving force is water supply its own gravity, is had very high
Reliability.Water storage babinet 7 can be arranged on outlet pipeline 3 and setting height is higher than on any one position of economizer 1,
Either change the position of water storage babinet 7, or be the connection type for changing it in parallel or series, as long as being in work in operation
Under pressure, and make water supply gravity flow into boiler by gravity, just belongs to the thinking consistent with this programme, it should be protected.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of anti-dry water-storing device, which is characterized in that including economizer, inlet pipeline and outlet pipeline, the economizer
It is arranged in the flue of boiler, the water inlet of the economizer is connected to inlet pipeline, and the inlet pipeline is connected with water supply water
Source is additionally provided with anti-backflow mechanism on the inlet pipeline, and the water outlet of the economizer is connected to outlet pipeline, the outlet pipe
Road is connected to the water inlet of boiler, and water storage babinet is additionally provided on the outlet pipeline, and the setting height of the water storage babinet is higher than
The setting height of economizer, when water supply source failure cannot provide water supply, the anti-backflow mechanism on inlet pipeline prevent to
Aqueous reflux, boiler memory water evaporation and pressure decline, and the water supply in water storage box body is under the effect of gravity to boiler replenishing water；
Further include inlet valve and outlet valve, the outlet pipeline includes the first pipeline and the second pipeline, the water outlet of the economizer
The water inlet of mouth and water storage babinet is led to by first pipeline connection, the water outlet of the water storage babinet and the water inlet of boiler
Second pipeline connection is crossed, the inlet valve is arranged on the first pipeline, and the outlet valve is arranged on the second pipeline；
The water storage babinet is equipped with discharging valve.
2. anti-dry water-storing device according to claim 1, which is characterized in that in the water outlet of the inlet valve and economizer
Mouthful between be equipped with first node, between the outlet valve and the water inlet of boiler be equipped with second node, the first node with
Third pipeline is communicated between second node, the third pipeline is equipped with switching valve.
3. anti-dry water-storing device according to claim 1, which is characterized in that the anti-backflow mechanism is check-valves.
4. a kind of anti-dry boiler, which is characterized in that including boiler body, flue and as described in any one of claims 1-3
Anti-dry water-storing device, the flue are connected to boiler body, and the economizer is arranged in the flue, the boiler body
Bottom be equipped with lower header, the outlet pipeline is connected to lower header.
5. anti-dry boiler according to claim 4, which is characterized in that further include low temperature superheater and high temperature superheater,
The low temperature superheater is arranged in flue and positioned at the top of the economizer, and the high temperature superheater is arranged in boiler body
Top, the low temperature superheater is connected to high temperature superheater by intermediate duct, and vapour is additionally provided at the top of the boiler body
Packet, the drum are connected to low temperature superheater by steam pipework, and the drum is connected to lower header by water screen tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510862859.8A CN105387441B (en) | 2015-11-30 | 2015-11-30 | Anti-dry water-storing device and anti-dry boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510862859.8A CN105387441B (en) | 2015-11-30 | 2015-11-30 | Anti-dry water-storing device and anti-dry boiler |
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| Publication Number | Publication Date |
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| CN105387441A CN105387441A (en) | 2016-03-09 |
| CN105387441B true CN105387441B (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106322349B (en) * | 2016-09-19 | 2018-06-22 | 河南省锅炉压力容器安全检测研究院 | Boiler is prevented dryouting method for safe operation |
| 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 | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN103398470B (en) * | 2013-07-26 | 2015-12-30 | 江苏双良锅炉有限公司 | Condensing-type efficient atmospheric-pressurehot 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 |
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