CN202109462U - Fuel economizer - Google Patents
Fuel economizer Download PDFInfo
- Publication number
- CN202109462U CN202109462U CN2011201774270U CN201120177427U CN202109462U CN 202109462 U CN202109462 U CN 202109462U CN 2011201774270 U CN2011201774270 U CN 2011201774270U CN 201120177427 U CN201120177427 U CN 201120177427U CN 202109462 U CN202109462 U CN 202109462U
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- light pipe
- heat
- heat exchange
- flue gas
- fume
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Abstract
The utility model relates to a heat exchanger capable of recovering the residual heat, comprising a plurality of light pipe bend heads, a plurality of light pipe direct pipes fixedly butted with the light pipe bend heads on the splicing weld seams, a suspension device fixed on the light pipe direct pipe and a plurality of H-shaped fins distributed on the outer walls of the light pipe direct pipes. The H-shaped fins are arranged on a heat exchange pipe of the existing light pipe fuel economizer, so as to increase the heating surface, increase the heat exchange efficiency and save the operation cost; the local eddy of the fume is formed under the action of the fin clearance, so as to effectively eliminate the ash blockage phenomenon; the fins are uniformly distributed to make the flow field more uniform and stable and increase the abrasion resistance; a fume baffler is added to make the fume flow along the heating surface channel of the H-shaped fins pipe as much as possible and improve the heat exchange effect; because the splicing weld seams are in the closed space, the direction flushing of the high-temperature fume is prevented, the device reliability is greatly increased and the use cost is reduced.
Description
Technical field
The utility model relates to a kind of heat exchanger, especially relates to a kind of heat exchanger that carries out waste heat recovery.
Background technology
Now, all trades and professions are all being carried out energy-saving and emission-reduction for creating low-carbon (LC) society, and are the major fields of energy-saving and emission-reduction as fields such as energy consumption rich and influential family's electric power, chemical industry, smelting, forgings.In these fields, therrmodynamic system is an important step of energy resource consumption, and economizer is as a vitals of therrmodynamic system, and the type of its use is again of all kinds.Outside heating surface, watch, economizer comprises light pipe economizer and finned tube economizer.Wherein spiral finned heat exchanger is the main pattern of finned tube exchanger, but owing to be prone to stifled ash and the excessive shortcoming of flue gas resistance, its application is extremely limited to; Advantages such as the light pipe economizer is simple with its manufacturing, maintenance is convenient have obtained using widely at power domain; But along with the height of energy prices rises and under the overall background of the use of the inferior fuel that causes and carbon emission reduction, light pipe heat exchanger arrangement space shortcoming big, that pressure drop is high, heat exchange efficiency is on the low side and wear resistance is relatively poor progressively comes out.Especially in the CFBB that developed rapidly in recent years; Because its part high-temperature surface also is arranged in the tail vertical well; As adopt the light pipe heat exchanger, very easily cause the low temperature heating surface arrangement space not enough, as adopt conventional spiral finned heat exchanger; Though arrangement space meets the demands, stifled ash that spiral finned heat exchanger is heavier and wearing character ash-rich obvious and the CFBB flue gas is a pair of contradiction.
Summary of the invention
The utility model solves mainly that the existing in prior technology thermal efficiency is low, arrangement space require big, dust stratification is serious, the technical problem of high wearing and tearing, provide that a kind of thermal efficiency is high, arrangement space require little, effectively reduce dust stratification, economizer that abrasion resistance is strong.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: the utility model comprises some light pipe elbows; The some light pipe straight tubes that fixedly dock at the splicing welding joint place with the light pipe elbow; Be fixed on the erecting by overhang on the light pipe straight tube, the outer wall of light pipe straight tube is distributed with some H type fins.
As preferably, also comprise the flue gas baffler, wall and the fixed seal connection of light pipe straight tube behind flue gas baffler and flue front wall or the flue are divided into confined space and heating surface layout passage with flue.
As preferably, splicing welding joint is positioned at confined space.
Therefore, the utility model is rational in infrastructure, has the following advantages:
One, owing to used H type fin, increased heating surface, heat exchange efficiency is high; Under the prerequisite of identical heat, its arrangement space is compared with the light pipe heat exchanger, can practice thrift more than 50%; Compact conformation greatly reduces the flow resistance of managing inboard working medium simultaneously, has practiced thrift operating cost;
Two, flue gas can form local eddy flow under the effect of the fin gap of interbank fin gap and same tube bank, and this eddy flow can play boasts grey effect, is particularly suitable for the heat transmission equipment of the higher therrmodynamic system of dustiness;
Three, because the H type fin of economizer evenly distributes along the light pipe straight tube,, make the flow field more evenly, steadily, prevented the formation in local flue gas corridor effectively, improved abrasion resistance so flue is divided into a plurality of passage aisles equably;
Four, between light pipe elbow and H type fin, all installed the flue gas baffler additional; Flue is divided into confined space and finned tube heating surface layout passage; Let the flue gas as much as possible H type finned tube heating surface passage of flowing through; Not only improve the heat exchange effect, and effectively avoided light pipe elbow and finned tube to be arranged in the flow field inhomogeneities that causes in the same passage;
Five, because in H type fin zone; The light pipe straight tube has no splicing welding joint, also encapsulates by the flue gas baffler even the light pipe elbow connects the splicing welding joint of usefulness, and it is in the confined space; Weld seam can be avoided directly washing away of high-temperature flue gas; Improve the reliability of equipment greatly, effectively prolonged the time between overhauls(TBO) and the service life of equipment, reduced the operation and maintenance cost of equipment.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is another kind of structural representations of the utility model;
Accompanying drawing 3 is the I partial enlarged drawings in the accompanying drawing 2.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment 1: the utility model comprises some light pipe elbows 2; The some light pipe straight tubes 8 that fixedly dock at splicing welding joint 3 places with light pipe elbow 2; Be fixed on the erecting by overhang 5 on the light pipe straight tube 8; The outer wall of light pipe straight tube 8 is distributed with some vertical with the light pipe straight tube and along the axial equally distributed some H type fins 7 of light pipe straight tube, erecting by overhang 5 is suspended on the bracing or strutting arrangement 6.(referring to Fig. 1)
In the present embodiment; During work; When high-temperature flue gas was flowed through finned tube (light pipe straight tube 8 parts that have H type fin 7) heating surface, the heat in the flue gas was delivered to heat on the fin 7 through heat convection; Fin 7 is transferred to heat on the parent tube (light pipe straight tube 8) of finned tube through heat-conducting mode again, thereby reaches the purpose of enhanced heat exchange.Special heat convection is its main heat exchange mode for being in the lower economizer of cigarette temperature, is the strong measure of enhanced heat exchange through the extended surface that increases the smoke convection side.Owing to the use of H type fin, increased the area of heating surface, heat exchange efficiency is high; Under the prerequisite of identical heat, its arrangement space is compared with the light pipe heat exchanger, can practice thrift more than 50%; Compact conformation greatly reduces the flow resistance of managing inboard working medium simultaneously, has practiced thrift operating cost; Flue gas can form local eddy flow under the effect of the fin gap of interbank fin gap and same tube bank, this eddy flow can play boasts grey effect, is particularly suitable for the heat transmission equipment of the higher therrmodynamic system of dustiness; Because the H type fin of economizer evenly distributes along the light pipe straight tube; So flue is divided into a plurality of passage aisles equably, make the flow field more evenly, steadily, prevented the formation in local flue gas corridor effectively; Improve abrasion resistance, can realize the effect of this law utility model effectively.
Embodiment 2: the utility model comprises some light pipe elbows 2; The some light pipe straight tubes 8 that fixedly dock at splicing welding joint 3 places with light pipe elbow 2; Be fixed on the erecting by overhang 5 on the light pipe straight tube 8; The outer wall of light pipe straight tube 8 is distributed with some vertical with the light pipe straight tube and along the axial equally distributed some H type fins 7 of light pipe straight tube, erecting by overhang 5 is suspended on the bracing or strutting arrangement 6, and bracing or strutting arrangement 6 is outlet collection casees of boiler.The utility model also comprises flue gas baffler 1 simultaneously, and wall and 8 fixed seal connections of light pipe straight tube behind flue gas baffler 1 and flue front wall or the flue are divided into confined space 9 with flue and arrange passage 4 with heating surface.(referring to Fig. 2)
In the present embodiment; During work; When high-temperature flue gas was flowed through finned tube (light pipe straight tube 8 parts that have H type fin 7) heating surface, the heat in the flue gas was delivered to heat on the fin 7 through heat convection; Fin 7 is transferred to heat on the parent tube (light pipe straight tube 8) of finned tube through heat-conducting mode again, thereby reaches the purpose of enhanced heat exchange.Special heat convection is its main heat exchange mode for being in the lower economizer of cigarette temperature, is the strong measure of enhanced heat exchange through the extended surface that increases the smoke convection side.Owing to the use of H type fin, increased the area of heating surface, heat exchange efficiency is high; Under the prerequisite of identical heat, its arrangement space is compared with the light pipe heat exchanger, can practice thrift more than 50%; Compact conformation greatly reduces the flow resistance of managing inboard working medium simultaneously, has practiced thrift operating cost; Flue gas can form local eddy flow under the effect of the fin gap of interbank fin gap and same tube bank, this eddy flow can play boasts grey effect, is particularly suitable for the heat transmission equipment of the higher therrmodynamic system of dustiness; Because the H type fin of economizer evenly distributes along the light pipe straight tube, so flue is divided into a plurality of passage aisles equably, make the flow field more evenly, steadily, prevented the formation in local flue gas corridor effectively, improved abrasion resistance; Owing between light pipe elbow and H type fin, all installed the flue gas baffler additional; Flue is divided into confined space and finned tube heating surface layout passage; Let the flue gas as much as possible H type finned tube heating surface passage of flowing through; Not only improve the heat exchange effect, and effectively avoided light pipe elbow and finned tube to be arranged in the flow field inhomogeneities that causes in the same passage.
Embodiment 3: the utility model comprises some light pipe elbows 2; The some light pipe straight tubes 8 that fixedly dock at splicing welding joint 3 places with light pipe elbow 2; Be fixed on the erecting by overhang 5 on the light pipe straight tube 8; The outer wall of light pipe straight tube 8 is distributed with some vertical with the light pipe straight tube and along the axial equally distributed some H type fins 7 of light pipe straight tube, erecting by overhang 5 is suspended on the bracing or strutting arrangement 6, and the bracing or strutting arrangement here is an outlet collection case.The utility model also comprises flue gas baffler 1 simultaneously, and wall and 8 fixed seal connections of light pipe straight tube behind flue gas baffler 1 and flue front wall or the flue are divided into confined space 9 with flue and arrange passage 4 with heating surface.Splicing welding joint 3 is positioned at confined space 9.(referring to Fig. 2, Fig. 3)
In the present embodiment; During work; When high-temperature flue gas was flowed through finned tube (light pipe straight tube 8 parts that have H type fin 7) heating surface, the heat in the flue gas was delivered to heat on the fin 7 through heat convection; Fin 7 is transferred to heat on the parent tube (light pipe straight tube 8) of finned tube through heat-conducting mode again, thereby reaches the purpose of enhanced heat exchange.Special heat convection is its main heat exchange mode for being in the lower economizer of cigarette temperature, is the strong measure of enhanced heat exchange through the extended surface that increases the smoke convection side.Owing to the use of H type fin, increased the area of heating surface, heat exchange efficiency is high; Under the prerequisite of identical heat, its arrangement space is compared with the light pipe heat exchanger, can practice thrift more than 50%; Compact conformation greatly reduces the flow resistance of managing inboard working medium simultaneously, has practiced thrift operating cost; Flue gas can form local eddy flow under the effect of the fin gap of interbank fin gap and same tube bank, this eddy flow can play boasts grey effect, is particularly suitable for the heat transmission equipment of the higher therrmodynamic system of dustiness; Because the H type fin of economizer evenly distributes along the light pipe straight tube, so flue is divided into a plurality of passage aisles equably, make the flow field more evenly, steadily, prevented the formation in local flue gas corridor effectively, improved abrasion resistance; Owing between light pipe elbow and H type fin, all installed the flue gas baffler additional; Flue is divided into confined space and finned tube heating surface layout passage; Let the flue gas as much as possible H type finned tube heating surface passage of flowing through; Not only improve the heat exchange effect, and effectively avoided light pipe elbow and finned tube to be arranged in the flow field inhomogeneities that causes in the same passage; Because in H type fin zone; The light pipe straight tube has no splicing welding joint, also encapsulates by the flue gas baffler even the light pipe elbow connects the splicing welding joint of usefulness, and it is in the confined space; Weld seam can be avoided directly washing away of high-temperature flue gas; Improve the reliability of equipment greatly, effectively prolonged the time between overhauls(TBO) and the service life of equipment, reduced the operation and maintenance cost of equipment.
Claims (3)
1. economizer; Comprise some light pipe elbows (2); Some light pipe straight tubes (8) of locating fixedly to dock at splicing welding joint (3) with said light pipe elbow (2); Be fixed on the erecting by overhang (5) on the said light pipe straight tube (8), it is characterized in that: the outer wall of said light pipe straight tube (8) is distributed with some H type fins (7).
2. a kind of economizer according to claim 1; It is characterized in that: also comprise flue gas baffler (1); Wall and said light pipe straight tube (8) fixed seal connection behind said flue gas baffler (1) and flue front wall or the flue are divided into confined space (9) and heating surface layout passage (4) with flue.
3. a kind of economizer according to claim 2 is characterized in that: said splicing welding joint (3) is positioned at said confined space (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201774270U CN202109462U (en) | 2011-05-30 | 2011-05-30 | Fuel economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201774270U CN202109462U (en) | 2011-05-30 | 2011-05-30 | Fuel economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202109462U true CN202109462U (en) | 2012-01-11 |
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ID=45434896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201774270U Expired - Lifetime CN202109462U (en) | 2011-05-30 | 2011-05-30 | Fuel economizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN202109462U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912864A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Header support and limit device in boiler |
| CN104913293A (en) * | 2015-05-18 | 2015-09-16 | 西安西热锅炉环保工程有限公司 | Economizer device allowing smoke temperature of power station boiler to be adjusted |
| CN105299615A (en) * | 2015-12-14 | 2016-02-03 | 江苏中科重工股份有限公司 | Coal economizer |
| CN109099412A (en) * | 2018-09-28 | 2018-12-28 | 江阴德耐特重工科技有限公司 | A kind of power station high temperature and pressure rear pass economizer mounting structure |
| CN110296389A (en) * | 2019-06-30 | 2019-10-01 | 无锡华光锅炉股份有限公司 | A kind of economizer arragement construction |
| CN113175685A (en) * | 2021-04-23 | 2021-07-27 | 华能洋浦热电有限公司 | Flue gas guide system and gas turbine exhaust-heat boiler |
-
2011
- 2011-05-30 CN CN2011201774270U patent/CN202109462U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912864A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Header support and limit device in boiler |
| CN103912864B (en) * | 2014-03-28 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Header supporting and limiting device in a kind of boiler |
| CN104913293A (en) * | 2015-05-18 | 2015-09-16 | 西安西热锅炉环保工程有限公司 | Economizer device allowing smoke temperature of power station boiler to be adjusted |
| CN105299615A (en) * | 2015-12-14 | 2016-02-03 | 江苏中科重工股份有限公司 | Coal economizer |
| CN109099412A (en) * | 2018-09-28 | 2018-12-28 | 江阴德耐特重工科技有限公司 | A kind of power station high temperature and pressure rear pass economizer mounting structure |
| CN109099412B (en) * | 2018-09-28 | 2023-12-15 | 江阴德耐特重工科技有限公司 | Mounting structure of high-temperature high-pressure back flue economizer of power station |
| CN110296389A (en) * | 2019-06-30 | 2019-10-01 | 无锡华光锅炉股份有限公司 | A kind of economizer arragement construction |
| CN113175685A (en) * | 2021-04-23 | 2021-07-27 | 华能洋浦热电有限公司 | Flue gas guide system and gas turbine exhaust-heat boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low-pressure coal saver for boiler Effective date of registration: 20131021 Granted publication date: 20120111 Pledgee: Pudong Development Bank of Shanghai, Limited by Share Ltd, Jiaxing branch Pledgor: Eastern Hitachi boiler Limited Company Registration number: 2013990000759 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: DONGFANG MHPS BOLIER CO., LTD. Free format text: FORMER NAME: DONGFANG RILI BOILER CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 314050, south side, No. four, Chengnan Road, Nanhu District, Zhejiang, Jiaxing Patentee after: MHPS DONGFANG BOILER CO., LTD. Address before: 314050, south side, No. four, Chengnan Road, Nanhu District, Zhejiang, Jiaxing Patentee before: Eastern Hitachi boiler Limited Company |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 314036 No. 1267, Chenggong Road, Zhejiang, Jiaxing Patentee after: MHPS DONGFANG BOILER CO., LTD. Address before: 314050, south side, No. four, Chengnan Road, Nanhu District, Zhejiang, Jiaxing Patentee before: MHPS DONGFANG BOILER CO., LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |
|
| CX01 | Expiry of patent term |