CN216244397U - Evaporator structure of waste incineration boiler - Google Patents
Evaporator structure of waste incineration boiler Download PDFInfo
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- CN216244397U CN216244397U CN202122936181.7U CN202122936181U CN216244397U CN 216244397 U CN216244397 U CN 216244397U CN 202122936181 U CN202122936181 U CN 202122936181U CN 216244397 U CN216244397 U CN 216244397U
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- evaporator
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- cooled wall
- header
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Abstract
The utility model relates to the technical field of waste incineration boilers, in particular to a waste incineration boiler evaporator structure which can effectively solve the problems of expansion difference and height difference between an evaporator and a water-cooled wall, has a compact and reasonable structure and ensures boiler efficiency and comprises the water-cooled wall and an evaporator tube bundle, wherein the upper end of the water-cooled wall is connected with an upper water-cooled wall header and the lower end of the water-cooled wall is connected with a lower water-cooled wall header, the upper end of the evaporator tube bundle is connected with an upper evaporator header and the lower end of the evaporator tube bundle is connected with a lower evaporator header, and the waste incineration boiler evaporator structure is characterized in that an independent water supply header is arranged below the front part or the rear part of the evaporator tube bundle, the top of the water supply header is connected with the bottom of the lower water-cooled wall header through a header hanger plate, the water supply header is connected with the lower evaporator header through a plurality of elbow tubes, and the height difference between the lower evaporator header and the lower water-cooled wall header is less than 400 mm.
Description
Technical Field
The utility model relates to the technical field of waste incineration boilers, in particular to a waste incineration boiler evaporator structure.
Background
In the existing waste incineration boiler system, a front evaporator is positioned in front of a high-temperature superheater and is used for reducing the temperature of flue gas entering the high-temperature superheater, slowing down the high-temperature corrosion speed of the high-temperature superheater and prolonging the service life of the high-temperature superheater; the rear evaporator is positioned behind the low-temperature superheater and used for reducing the temperature of the flue gas entering the economizer so as to ensure that the temperature of the working medium in the economizer is lower than the saturation temperature and prevent the economizer from generating steam plug and pipe explosion, so that the evaporator is an integral part of the waste incineration boiler.
In the horizontal waste incineration heat boiler, an evaporator is arranged in a horizontal flue, the evaporator is in a tube panel structure, a concentration tube is arranged at the upper part and the lower part, a tube bundle is arranged in the middle, the evaporator supplies water through a water-cooled wall lower header of the horizontal flue, in order to avoid the expansion difference between the evaporator and the water-cooled wall, the lower header of the water-cooled wall and the concentration tube at the lower part of the evaporator have the height difference of about 1.3m, and the lower header and the concentration tube are connected by adopting a bent tube, so a flue gas corridor is arranged at the lower part of a heating surface of the horizontal flue, and a flue gas baffle is required to be arranged to ensure that the flue gas exchanges heat with the evaporator and the heating surface. Because here flue gas temperature is higher, generally 400~650 ℃, the flue gas baffle material needs high temperature resistant, adopts 06Cr25Ni20 and 06Cr18Ni11Ti, and the cost is higher on the one hand, and on the other hand because the flue gas baffle lacks the cooling, the flue gas baffle is yielding to drop, forms the flue gas corridor, influences the heat transfer effect, leads to exhaust gas temperature to rise, influences boiler efficiency.
Disclosure of Invention
The utility model provides a waste incineration boiler evaporator structure, which can effectively solve the problems of expansion difference and height difference between an evaporator and a water-cooled wall, has a compact and reasonable structure and ensures boiler efficiency.
The technical scheme is as follows: the utility model provides a msw incineration boiler evaporator structure, its includes water-cooled wall and evaporator tube bank, water-cooled wall upper end is connected water-cooled wall and is gone up collection box, lower extreme connection water-cooled wall collection box down, evaporator tube bank upper end is connected evaporator and is gone up collection box, lower extreme connection evaporator and is gone up collection box, its characterized in that, evaporator tube bank front portion below or rear portion below are provided with independent feedwater collection box, feedwater collection box top through the collection case hanger plate with collection box bottom under the water-cooled wall is connected, feedwater collection box with evaporator is down the collection box and is connected through many bends, the evaporator is down the collection box with the difference in height between the collection box is less than 400mm under the water-cooled wall.
It is further characterized in that the multi-elbow pipe is a double-L-shaped elbow pipe;
the evaporator tube bundle is provided with an anti-abrasion tile towards one end of the flue gas flowing direction;
a shake stopping mechanism is arranged between two adjacent evaporator lower headers at the same height and between the evaporator lower headers and the water wall lower headers, and comprises two L-shaped plates, wherein one L-shaped plate is provided with a limiting groove, and the other L-shaped plate is inserted into the limiting groove;
and a lifting lug is arranged on the header on the water-cooled wall.
After the utility model is adopted, the evaporator uses the independent water supply header, the evaporator can be ensured to be fully hydrophobic, the height difference between the water-cooled wall lower header and the evaporator lower header is reduced, the flue gas baffle is saved, the manufacturing cost and the subsequent maintenance cost are reduced, a flue gas corridor can not be caused at the position, the structure is compact and reasonable, and the boiler efficiency is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a bottom view of fig. 1.
Detailed Description
Referring to fig. 1, 2 and 3, the evaporator structure of the waste incineration boiler comprises a water-cooled wall 1 and an evaporator tube bundle 2, wherein the upper end of the water-cooled wall 1 is connected with an upper water-cooled wall header 3, the lower end of the water-cooled wall 1 is connected with a lower water-cooled wall header 4, the upper end of the evaporator tube bundle 2 is connected with an upper evaporator header 5, the lower end of the evaporator tube bundle 2 is connected with a lower evaporator header 6, an independent water supply header 7 is arranged below the front part or the rear part of the evaporator tube bundle 2, the top of the water supply header 7 is connected with the bottom of the lower water-cooled wall header 4 through a header hanger plate 8, the water supply header 7 is connected with the lower evaporator header 6 through a multi-elbow pipe 9, the multi-elbow pipe 9 specifically adopts a double-L-shaped elbow pipe, expansion can be effectively absorbed, and the height difference between the lower evaporator header 6 and the lower water-cooled wall header 4 is 390 mm.
Towards the one end of flue gas flow direction, install the abrasionproof tile 10 on the evaporimeter tube bank 2, can meet the protective effect on the smoke face again, prevent to be worn and torn by the flue gas.
Between the header 6 under two adjacent evaporimeters of same height, all be provided with between header 6 under the evaporimeter and the water-cooling wall header 4 and only shake mechanism 11, only shake mechanism 11 and include two L shaped plates, have seted up the spacing groove on one of them L shaped plate, and another L shaped plate inserts the spacing inslot, through the position of spacing groove restriction L shaped plate to it is spacing to realize the position between the header, prevents that the tube bank from appearing rocking.
The header 3 on the water wall is provided with a lifting lug 12 for fixing the superheater.
The utility model ensures that the evaporator can be fully hydrophobic; the height of the water wall of the horizontal flue is reduced, and the manufacturing cost is reduced; the lower collection box of the evaporator and the lower collection box of the water wall of the side wall of the horizontal flue are reduced.
Claims (5)
1. The utility model provides a msw incineration boiler evaporator structure, its includes water-cooled wall and evaporator tube bank, water-cooled wall upper end is connected water-cooled wall and is gone up collection box, lower extreme connection water-cooled wall collection box down, evaporator tube bank upper end is connected evaporator and is gone up collection box, lower extreme connection evaporator and is gone up collection box, its characterized in that, evaporator tube bank front portion below or rear portion below are provided with independent feedwater collection box, feedwater collection box top through the collection case hanger plate with collection box bottom under the water-cooled wall is connected, feedwater collection box with evaporator is down the collection box and is connected through many bends, the evaporator is down the collection box with the difference in height between the collection box is less than 400mm under the water-cooled wall.
2. A waste incineration boiler evaporator structure according to claim 1, characterised in that the multi-turn pipe is a double L-bend.
3. The waste incineration boiler evaporator structure of claim 1, wherein an anti-wear tile is mounted on the evaporator tube bundle towards an end in a flue gas flow direction.
4. The waste incineration boiler evaporator structure according to claim 1, wherein a sloshing stopping mechanism is arranged between two adjacent evaporator lower headers at the same height and between the evaporator lower headers and the water wall lower header, and the sloshing stopping mechanism comprises two L-shaped plates, one of the L-shaped plates is provided with a limiting groove, and the other L-shaped plate is inserted into the limiting groove.
5. The waste incineration boiler evaporator structure of claim 1, wherein the water-cooled wall header is provided with a lifting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122936181.7U CN216244397U (en) | 2021-11-27 | 2021-11-27 | Evaporator structure of waste incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122936181.7U CN216244397U (en) | 2021-11-27 | 2021-11-27 | Evaporator structure of waste incineration boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216244397U true CN216244397U (en) | 2022-04-08 |
Family
ID=80959588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122936181.7U Active CN216244397U (en) | 2021-11-27 | 2021-11-27 | Evaporator structure of waste incineration boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216244397U (en) |
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2021
- 2021-11-27 CN CN202122936181.7U patent/CN216244397U/en active Active
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