CN204534561U - The efficient mixed type economizer of biomass recirculating fluidized bed boiler - Google Patents
The efficient mixed type economizer of biomass recirculating fluidized bed boiler Download PDFInfo
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- CN204534561U CN204534561U CN201520205345.0U CN201520205345U CN204534561U CN 204534561 U CN204534561 U CN 204534561U CN 201520205345 U CN201520205345 U CN 201520205345U CN 204534561 U CN204534561 U CN 204534561U
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- snakelike
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- fluidized bed
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Abstract
The utility model discloses the efficient mixed type economizer of a kind of biomass recirculating fluidized bed boiler, to comprise in array structure fixed installation on the supporting plate and bootable in it heat transferring medium make the snakelike carrier pipe of upper current downflow, the upper surface of the horizontal pipeline section of the first half of snakelike carrier pipe is coated with polylith can the abrasionproof tile that expands of free-extension, and the horizontal pipeline section of the latter half of snakelike carrier pipe is evenly installed with multiple heat transfer fin vertically.The problem of the heavy wear of economizer pipe and economizer dust stratification is solved by the snakelike carrier pipe on economizer top and the structure of abrasionproof tile, economizer Lower Half adopts Dual-H-type finned tube simultaneously, ensure that the compact of economizer arrangement, consumption of materials be few, not easily dust stratification, good effect of heat exchange.Effectively reduce shutdown maintenance number of times, reduce investment and operating cost, achieve the object that economizer is energy-efficient, there is good practicality and market using value.
Description
Technical field
The utility model relates to economizer for boiler technical field, refers to the efficient mixed type economizer of a kind of biomass recirculating fluidized bed boiler particularly.
Background technology
Biomass recirculating fluidized bed boiler economizer quality directly affects safety, the economical operation of boiler, so that affects safety, the economical operation in whole power plant.Along with CFBB is in a large amount of utilizations in the fields such as fire coal, living beings, the form of economizer and kind get more and more, but in actual motion, the result of use of most of economizer in boiler operatiopn is also unsatisfactory, is mainly manifested in following one or more shortcoming: waste tubing metal, take up room large, easily dust stratification, wearing and tearing, service life short etc.
At present, boiler economizer structure and kind often, mainly contain following several types:
1, light pipe economizer, the shortcoming of this economizer is: tubing metal consumption is large, and take up room large, cost of investment is high.
2, Membrane Economizer, its shortcoming: be easily out of shape, easily there is crackle in pipe and band steel weld, causes leakage, and then produce dust stratification, and can result in blockage after dust stratification, affect safe operation of the boiler, the economizer of current this form generally no longer adopts.
3, H finned-tube economizer, the shortcoming of this economizer: on pipe, 4 rows are are easily worn and torn, once wear and tear, change very difficult, and then cause leakage, produce dust stratification, can result in blockage after dust stratification, affect safe operation of the boiler, the economizer of current this form adopts more, but the problem of wearing and tearing dust stratification, never solves, affects safe operation of the boiler.
Summary of the invention
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, there is provided a kind of biomass recirculating fluidized bed boiler efficient mixed type economizer, this economizer decreases the dust stratification of economizer by the abrasionproof tile of reasonable Arrangement and the structure of heat transfer fin, decrease the maintenance number of times of economizer, increase the heat exchange efficiency of economizer, there is good practical function.
For achieving the above object, the efficient mixed type economizer of biomass recirculating fluidized bed boiler designed by the utility model, to comprise in array structure fixed installation on the supporting plate and bootable in it heat transferring medium make the snakelike carrier pipe of upper current downflow, the upper surface of the horizontal pipeline section of the first half of snakelike carrier pipe is coated with polylith can the abrasionproof tile that expands of free-extension, and the horizontal pipeline section of the latter half of snakelike carrier pipe is evenly installed with multiple heat transfer fin vertically.
Preferably, be connected by location pressure ring between the end of adjacent two blocks of abrasionproof tiles, location pressure ring comprises second pressure ring and first pressure ring, second pressure ring two ends corresponding with first pressure ring are weldingly connected, the middle inside of second pressure ring and the lower surface of snakelike carrier pipe fit tightly, the middle inside of first pressure ring and the end of adjacent two blocks of abrasionproof tiles fit tightly, thus both can guarantee that abrasionproof tile can expand by free-extension vertically, can ensure that again abrasionproof tile installs positioning stablity firm.
Further, described abrasionproof tile preferably arc chord angle is designed to 100 ~ 140 °, and best arc chord angle is designed to 120 °.Like this, the flue gas containing high concentration grey particle both effectively can be avoided directly to wash away snakelike carrier pipe, there is again the feature that structure is simple, be easy to assembling.
Further, described heat transfer fin is H type or double H-type fin.Like this, its characteristics of compact layout, saves tubing.
Again further, the horizontal pipeline section of the first half of described snakelike carrier pipe has four first horizontal straight tubes, and every root first horizontal straight tube upper surface is coated with two blocks of abrasionproof tiles; The horizontal pipeline section of the latter half of described snakelike carrier pipe has four second horizontal straight tubes, and every two second horizontal straight tubes are one group, often to organize on the second horizontal straight tube uniform welding vertically and is provided with multiple double H-type fin.
Also further, described snakelike carrier pipe is small-bore carbon steel pipe, and described abrasionproof tile is heat-resistance stainless steel tile, and described heat transfer fin is stalloy.
Compared with prior art, tool of the present invention has the following advantages:
1, the problem of the heavy wear of economizer pipe and economizer dust stratification is solved by the snakelike carrier pipe on economizer top and the structure of abrasionproof tile.
2, economizer Lower Half adopts Dual-H-type finned tube, ensure that the compact of economizer arrangement, and consumption of materials is few, not easily dust stratification, good effect of heat exchange.
3, effectively reduce the shutdown maintenance number of times of economizer, reduce investment and operating cost, achieve the object that economizer is energy-efficient, there is good practicality and market using value.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of a kind of biomass recirculating fluidized bed boiler efficient mixed type economizer;
Fig. 2 is that sectional structure schematic diagram is looked on a left side of Fig. 1;
Fig. 3 is the section structure schematic diagram of locating pressure ring in Fig. 1;
Fig. 4 is the structure for amplifying schematic diagram of double H-type fin in Fig. 2.
In figure: snakelike carrier pipe 1 (wherein, the first horizontal straight tube 1.1, second horizontal straight tube 1.2), location pressure ring 2 (wherein, second pressure ring 2.1, first pressure ring 2.2), abrasionproof tile 3, heat transfer fin 4, gripper shoe 5.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The efficient mixed type economizer of biomass recirculating fluidized bed boiler shown in figure, comprise to be fixedly mounted in array structure in gripper shoe 5 and bootable in it heat transferring medium make the snakelike carrier pipe 1 of upper current downflow, the upper surface of the horizontal pipeline section of the first half of snakelike carrier pipe 1 is coated with polylith can the abrasionproof tile 3 that expands of free-extension, the horizontal pipeline section of the latter half of snakelike carrier pipe 1 is evenly installed with multiple heat transfer fin 4 vertically, heat transfer fin 4 preferably double H-type fin 4.
Particularly, the horizontal pipeline section of the first half of snakelike carrier pipe 1 has four first horizontal straight tubes 1.1, and every root first horizontal straight tube 1.1 upper surface is coated with two blocks of abrasionproof tiles 3; The horizontal pipeline section of the latter half of snakelike carrier pipe 1 has four second horizontal straight tubes 1.2, and every two second horizontal straight tubes 1.2 are one group, often to organize on the second horizontal straight tube 1.2 uniform welding vertically and is provided with multiple double H-type fin 4.Every root first horizontal straight tube 1.1 covers two blocks of abrasionproof tiles 3 and can ensure the area coverage of abrasionproof tile 3 to the first horizontal straight tube 1.1 axis.Be connected by neighbouring two second horizontal straight tube 1.2 double H-type fins, structural strength is high simultaneously, and install processing simply, comparatively H type fin, has better practical effect.
When flue gas is by economizer, first by four first horizontal straight tubes 1.1 on top, flue gas containing high concentration grey particle directly washes away the abrasionproof tile 3 above four first horizontal straight tubes 1.1, thus reach the object of the snakelike carrier pipe 1 on protection economizer top, flue gas is through the snakelike carrier pipe 1 with abrasionproof tile 3, after over commutation, the second horizontal straight tube 1.2 entering bottom proceeds heat exchange, now flue gas concentration is even, flowing steadily, disturbance is very little, the wear resistance of economizer is declined greatly, economizer heat transmission equipment is made to be in a good working order.
More specifically, be connected by location pressure ring 2 between the end of adjacent two blocks of abrasionproof tiles 3, location pressure ring 2 comprises second pressure ring 2.1 and first pressure ring 2.2, second pressure ring 2.1 and the corresponding two ends of first pressure ring 2.2 are weldingly connected, the middle inside of second pressure ring 2.1 and the lower surface of snakelike carrier pipe 1 fit tightly, the middle inside of first pressure ring 2.2 and the end of adjacent two blocks of abrasionproof tiles 3 fit tightly, thus guarantee that abrasionproof tile 3 can expand by free-extension vertically.Location pressure ring 2 limits the position of abrasionproof tile 3 on the first horizontal straight tube 1.1, improves the structural stability of economizer, and the structure of location pressure ring 2 is simple, is easy to making and installation, has good practicality and market using value.
The arc chord angle of above-mentioned abrasionproof tile 3 is generally 100 ~ 140 °.Abrasionproof tile 3 is arranged within the scope of 100 ~ 140 ° of the upper surface of the first horizontal straight tube 1.1, the contact area of abrasionproof tile 3 and flue gas can be ensured, effective minimizing flue gas washing away for the snakelike carrier pipe 1 in economizer top, improves the practical effect of economizer.
In the present embodiment, the arc chord angle of abrasionproof tile 3 is preferably designed for 120 °, when considering abrasionproof tile 3 cost, ensure that the coverage of abrasionproof tile 3.
In technique scheme, snakelike carrier pipe 1 is small-bore carbon steel pipe, and abrasionproof tile 3 is heat-resistance stainless steel tile, and heat transfer fin 4 is stalloy.Snakelike carrier pipe 1 adopts carbon steel pipe while proof strength, also has good heat-resisting effect; Abrasionproof tile 3 adopts thermo-labile rust steel matter, while guarantee heat-resisting effect, also effectively can reduce flue gas washing away abrasionproof tile 3, and drawing materials conveniently of heat transfer fin 4, heat-transfer effect is good, and cost is low, and market using value is high.
The utility model carries out rectification and heat exchange to flue gas respectively by reasonable Arrangement abrasionproof tile on snakelike carrier pipe 13 and heat transfer fin 4, and practical effect is good.Adopt top four to arrange snakelike carrier pipe 1+ abrasionproof tile 3 and bottom four to arrange snakelike carrier pipe 1+ and to conduct heat the structure that fin 4 combines; combine the advantage that conventional Dual-H-type finned tube arrangement is compact, save tubing; turn avoid the easy dust stratification of conventional Dual-H-type finned tube, problem easy to wear; improve heat exchange efficiency simultaneously; decrease power plant's maintenance down number of times; reduce operation and maintenance cost, improve heat exchange efficiency, really achieve the object that economizer is energy-efficient.
The above is only preferred embodiment of the present utility model, not does any pro forma restriction to structure of the present utility model.Every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of the technical solution of the utility model.
Claims (9)
1. the efficient mixed type economizer of biomass recirculating fluidized bed boiler, comprise to be fixedly mounted in array structure gripper shoe (5) upper and bootable in it heat transferring medium make the snakelike carrier pipe (1) of upper current downflow, it is characterized in that: the upper surface of the horizontal pipeline section of the first half of described snakelike carrier pipe (1) is coated with polylith can the abrasionproof tile (3) that expands of free-extension, and the horizontal pipeline section of the latter half of described snakelike carrier pipe (1) is evenly installed with multiple heat transfer fin (4) vertically.
2. the efficient mixed type economizer of biomass recirculating fluidized bed boiler according to claim 1, it is characterized in that: be connected by location pressure ring (2) between the end of adjacent two pieces of abrasionproof tiles (3), described location pressure ring (2) comprises second pressure ring (2.1) and first pressure ring (2.2), described second pressure ring (2.1) and the corresponding two ends of first pressure ring (2.2) are weldingly connected, the middle inside of described second pressure ring (2.1) and the lower surface of snakelike carrier pipe (1) fit tightly, the middle inside of described first pressure ring (2.2) and the end of adjacent two pieces of abrasionproof tiles (3) fit tightly, thus guarantee that abrasionproof tile (3) can expand by free-extension vertically.
3. the efficient mixed type economizer of biomass recirculating fluidized bed boiler according to claim 2, is characterized in that: the arc chord angle of described abrasionproof tile (3) is 100 ~ 140 °.
4. the efficient mixed type economizer of biomass recirculating fluidized bed boiler according to claim 3, is characterized in that: the arc chord angle of described abrasionproof tile (3) is 120 °.
5. the efficient mixed type economizer of the biomass recirculating fluidized bed boiler according to any one of Claims 1 to 4, is characterized in that: described heat transfer fin (4) is H type or double H-type fin.
6. the efficient mixed type economizer of biomass recirculating fluidized bed boiler according to claim 5, it is characterized in that: the horizontal pipeline section of the first half of described snakelike carrier pipe (1) has four first horizontal straight tubes (1.1), every root first horizontal straight tube (1.1) upper surface is coated with two pieces of abrasionproof tiles (3); The horizontal pipeline section of the latter half of described snakelike carrier pipe (1) has four second horizontal straight tubes (1.2), every two second horizontal straight tubes (1.2) are one group, often to organize on the second horizontal straight tube (1.2) uniform welding vertically and are provided with multiple double H-type fin.
7. the efficient mixed type economizer of the biomass recirculating fluidized bed boiler according to any one of Claims 1 to 4, it is characterized in that: described snakelike carrier pipe (1) is small-bore carbon steel pipe, described abrasionproof tile (3) is heat-resistance stainless steel tile, and described heat transfer fin (4) is stalloy.
8. the efficient mixed type economizer of biomass recirculating fluidized bed boiler according to claim 5, it is characterized in that: described snakelike carrier pipe (1) is small-bore carbon steel pipe, described abrasionproof tile (3) is heat-resistance stainless steel tile, and described heat transfer fin (4) is stalloy.
9. the efficient mixed type economizer of biomass recirculating fluidized bed boiler according to claim 6, it is characterized in that: described snakelike carrier pipe (1) is small-bore carbon steel pipe, described abrasionproof tile (3) is heat-resistance stainless steel tile, and described heat transfer fin (4) is stalloy.
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| CN201520205345.0U CN204534561U (en) | 2015-04-08 | 2015-04-08 | The efficient mixed type economizer of biomass recirculating fluidized bed boiler |
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| CN201520205345.0U CN204534561U (en) | 2015-04-08 | 2015-04-08 | The efficient mixed type economizer of biomass recirculating fluidized bed boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403091A (en) * | 2015-12-23 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | H-shaped fin heating surface applied to low-temperature reheater and heat exchange method of H-shaped fin heating surface |
| CN106969649A (en) * | 2017-05-12 | 2017-07-21 | 江苏龙净节能科技有限公司 | A kind of multi-pipeline abrasionproof high-efficiency heat exchanger |
| CN107014223A (en) * | 2017-05-12 | 2017-08-04 | 江苏龙净节能科技有限公司 | Large Copacity fume afterheat utilizes low temperature emission reduction abrasionproof high-efficiency heat exchanger |
| CN107490317A (en) * | 2017-09-21 | 2017-12-19 | 无锡华光锅炉股份有限公司 | A kind of horizontal combustion engine waste heat boiler tube plate structure |
| CN108167800A (en) * | 2017-12-25 | 2018-06-15 | 浙江浙能技术研究院有限公司 | A kind of improvement boiler economizer |
-
2015
- 2015-04-08 CN CN201520205345.0U patent/CN204534561U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403091A (en) * | 2015-12-23 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | H-shaped fin heating surface applied to low-temperature reheater and heat exchange method of H-shaped fin heating surface |
| CN106969649A (en) * | 2017-05-12 | 2017-07-21 | 江苏龙净节能科技有限公司 | A kind of multi-pipeline abrasionproof high-efficiency heat exchanger |
| CN107014223A (en) * | 2017-05-12 | 2017-08-04 | 江苏龙净节能科技有限公司 | Large Copacity fume afterheat utilizes low temperature emission reduction abrasionproof high-efficiency heat exchanger |
| CN107490317A (en) * | 2017-09-21 | 2017-12-19 | 无锡华光锅炉股份有限公司 | A kind of horizontal combustion engine waste heat boiler tube plate structure |
| CN108167800A (en) * | 2017-12-25 | 2018-06-15 | 浙江浙能技术研究院有限公司 | A kind of improvement boiler economizer |
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| 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: 20150805 Termination date: 20210408 |