CN202791969U - Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device - Google Patents
Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device Download PDFInfo
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- CN202791969U CN202791969U CN 201220452061 CN201220452061U CN202791969U CN 202791969 U CN202791969 U CN 202791969U CN 201220452061 CN201220452061 CN 201220452061 CN 201220452061 U CN201220452061 U CN 201220452061U CN 202791969 U CN202791969 U CN 202791969U
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Abstract
The utility model discloses a heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device. The heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device comprises a water pipe (6), a water pump (4), a coal economizer (2) and a boiler (1), and is characterized in that: a heat storage tank (3) is arranged on the water pipe (6); one end of the coal economizer (2) is connected with a water inlet of the heat storage tank (3) through a water outlet pipe (6b); the other end of the coal economizer (2) is connected with a water outlet of the heat storage tank (3) through a water inlet pipe (6a); and a check valve (5) is arranged on the water inlet pipe (6a) which is connected between the water outlet of the heat storage tank (3) and a water inlet of the coal economizer (2). The heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device has the advantages of energy conservation, safety and environment friendliness.
Description
Affiliated technical field
The utility model relates to a kind of residual heat from boiler fume reclaimer, relates to specifically a kind of heat accumulating type residual heat from boiler fume and reclaims efficient energy-saving device.Be suitable for the medium and small-scale steam boiler smoke discharging residual heat and recycle energy-saving application.
Background technology
At present, the medium and small-scale steam boiler of rated capacity 1～15t/h all adopts same batch (-type) water level control water supply modes, and namely during the boiler low water level, water pump starts feedwater automatically, and water pump stops feedwater automatically during high water level.Because feedwater is step, and burning is successional, and therefore, the old-fashioned economizer more time is in the state of " no-water dry combustion ", and the practical efficiency of economizer is very low, and the average exhaust gas temperature of boiler is high, and economizer is " province's coal " not.According to the test statistics data, the medium and small-scale steam boiler water pump feeds water only 1～10 minute time at every turn, and (pump head, flow are larger, the feedwater time is shorter), the feedwater time only accounts for 20～50% of the boiler operatiopn time, the time that is old-fashioned economizer 50～80% is in " dry combustion method " idling conditions, so effective rate of utilization also only has 20～50%, do not have due energy-saving effect far away.
Summary of the invention
The deficiency that exists in order to overcome above technology, the purpose of this utility model are to provide a kind of heat accumulating type residual heat from boiler fume simple in structure, easy to use, energy-conserving and environment-protective to reclaim efficient energy-saving device.
The technical scheme that the utility model technical solution problem adopts is: a kind of heat accumulating type residual heat from boiler fume reclaims efficient energy-saving device, it comprises water pipe, water pump, economizer, boiler, it is characterized in that: described water pipe is provided with heat-accumulator tank, described economizer one end is connected with the heat-accumulator tank water inlet by outlet pipe, and the other end is connected with the heat-accumulator tank delivery port by water inlet pipe; Described heat-accumulator tank delivery port and the water inlet pipe that is connected between the economizer water inlet are provided with check-valves.
The beneficial effects of the utility model are: 1. energy-saving effect, and the economizer utilization rate improves 50～80%, and economizer leaving water temperature (boiler feed water temperature) improves 30～60 ℃, and the economizer energy-saving effect improves 2～3 times.2. safe effect, the coiled pipe of economizer can no-water dry combustions, avoid bursting accident.3. environment protecting, the average exhaust gas temperature of boiler descends 60～120 ℃, and favourable flue gas ash removal reduces greenhouse gas emission.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is structural representation of the present utility model;
Shown in the figure: 1. boiler, 2. economizer, 3. heat-accumulator tank, 4. water pump, 5. check-valves, 6. water pipe, the 6a. water inlet pipe, the 6b. outlet pipe, the A. boiler smoke flows to.
The specific embodiment
As shown in Figure 1, a kind of heat accumulating type residual heat from boiler fume reclaims efficient energy-saving device, its bag water pipe 6, water pump 4, economizer 2, boiler 1.Described water pipe 6 is provided with heat-accumulator tank 3, and described economizer 2 one ends are connected with heat-accumulator tank 3 water inlets by outlet pipe 6b, and the other end is connected with heat-accumulator tank 3 delivery ports by water inlet pipe 6a.Described heat-accumulator tank 3 delivery ports and the water inlet pipe 6a that is connected between economizer 2 water inlets are provided with check-valves 5.
The utility model operation principle: when boiler 1 water pump 4 stopped to feed water, the water that heat-accumulator tank is 3 li and economizer 2 formed natural convection loop, and retaining constantly is recycled heat temperature raising in the heat-accumulator tank 3, and therefore " no-water dry combustion " phenomenon can not appear in economizer 2 again; When boiler 1 water pump 4 started feedwater, feedwater flow headed into boiler 4 to the high-temperature water in the heat-accumulator tank 3 through economizer 2 coiled pipes, and and then the retaining of newly advancing is recycled again heating ..., reciprocal with this.Flowing to A from boiler 1 boiler smoke out can be from top to bottom, also can be horizontal direction, but boiler smoke flows to A and economizer 2 coiled pipe directions should be perpendicular.
The utility model is to boiler 1 flue gas heat recovery, and enterprise's DZL4-1.25-A II type coal-fired steam boiler 1 is furnished with a cast iron gilled tube economizer, and economizer 2 inflow temperatures are 25 ℃, only 45 ℃ of leaving water temperatures, and economizer 2 average exhaust gas temperatures are 270 ℃.Use heat accumulating type residual heat from boiler fume of the present utility model and reclaim efficient energy-saving device, above economizer 2, increase pressure 1.6MPa, a water capacity 0.6m
3Heat-accumulator tank 3.Improve rear economizer 2 leaving water temperatures according to the utility model and reach 80 ℃, economizer 2 average exhaust gas temperatures are down to 145 ℃, and economizer 2 leaving water temperatures improve 35 ℃, and energy-saving effect is original 2.75 times.
The utility model is to boiler 1 flue gas heat recovery, and enterprise's WNS8-1.6-Q type gas-steam boiler is furnished with a steel finned formula economizer, there is process condensate water to melt down 1, economizer 2 inflow temperatures are 60 ℃, and leaving water temperature is 85 ℃, and economizer 2 average exhaust gas temperatures are 205 ℃.Use heat accumulating type residual heat from boiler fume of the present utility model and reclaim efficient energy-saving device, above economizer 2, increase pressure 2.0MPa, a water capacity 0.8m
3Heat-accumulator tank 3.Reach 110 ℃ according to change economizer 2 leaving water temperatures of the present utility model, boiler 1 average exhaust gas temperature is down to 125 ℃, and economizer 2 leaving water temperatures improve 25 ℃, and energy-saving effect is original 2 times.
More than disclosing only is the utility model preferred embodiment; certainly can not limit interest field of the present utility model with this; all other do not break away under the essential scope of the present utility model; modification or the modification of the retouching of finishing and equivalence thereof allow, its scope of patent protection should be considered as being included in the present patent application scope and etc. in the same domain.
Claims (2)
1. a heat accumulating type residual heat from boiler fume reclaims efficient energy-saving device, it comprises water pipe (6), water pump (4), economizer (2), boiler (1), it is characterized in that: described water pipe (6) is provided with heat-accumulator tank (3), described economizer (2) one ends are connected with heat-accumulator tank (3) water inlet by outlet pipe (6b), and the other end is connected with heat-accumulator tank (3) delivery port by water inlet pipe (6a).
2. described heat accumulating type residual heat from boiler fume reclaims efficient energy-saving device according to claim 1, and it is characterized in that: described heat-accumulator tank (3) delivery port and the water inlet pipe (6a) that is connected between economizer (2) water inlet are provided with check-valves (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452061 CN202791969U (en) | 2012-09-06 | 2012-09-06 | Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452061 CN202791969U (en) | 2012-09-06 | 2012-09-06 | Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202791969U true CN202791969U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220452061 Expired - Fee Related CN202791969U (en) | 2012-09-06 | 2012-09-06 | Heat accumulating type boiler flue gas afterheat-recycling efficient energy-saving device |
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| CN (1) | CN202791969U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387441A (en) * | 2015-11-30 | 2016-03-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-burning-dry water storage device and anti-burning-dry boiler |
| CN106016239A (en) * | 2016-06-22 | 2016-10-12 | 苏州市康普来表面处理科技有限公司 | Heat recycling device for boiler smoke channel |
-
2012
- 2012-09-06 CN CN 201220452061 patent/CN202791969U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387441A (en) * | 2015-11-30 | 2016-03-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-burning-dry water storage device and anti-burning-dry boiler |
| CN106016239A (en) * | 2016-06-22 | 2016-10-12 | 苏州市康普来表面处理科技有限公司 | Heat recycling device for boiler smoke channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20180906 |