CN217844901U - Anti-condensation self-ash-cleaning evaporator of waste heat boiler - Google Patents
Anti-condensation self-ash-cleaning evaporator of waste heat boiler Download PDFInfo
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- CN217844901U CN217844901U CN202221335255.XU CN202221335255U CN217844901U CN 217844901 U CN217844901 U CN 217844901U CN 202221335255 U CN202221335255 U CN 202221335255U CN 217844901 U CN217844901 U CN 217844901U
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Abstract
The utility model discloses a waste heat boiler anti-condensation is from deashing evaporimeter, rapping device is connected to evaporimeter top backplate side, and the evaporimeter tube system is the sleeve pipe structure. The utility model discloses the sleeve pipe structure makes pipe surface wall temperature be higher than flue gas dew point temperature, can avoid receiving the hot side surface dewfall to take place low temperature corrosion, and makes the wall temperature at non-high temperature corrosion interval. The utility model discloses strike and can freely oscillate under the flue gas scouring action at rapping device, make the ash that adheres to on the pipe wall drop, prevent the pipe wall deposition, have from the ash removal ability, can reduce its maintenance, maintenance cost, guarantee the long-term stable high-efficient operation of boiler. The utility model discloses the evaporimeter piping adopts the natural circulation mode through setting up the sleeve pipe structure, and the working medium leans on the density difference to flow, need not to set up the water pump, can practice thrift the station service power, improves the thermal efficiency of power plant. The utility model discloses a wholly dispatch from the factory, the installation only needs to be hung on the scene, connects the import and export pipe, has reduced the work load of site operation.
Description
Technical Field
The utility model relates to a waste heat boiler technical field especially relates to a waste heat boiler antisweat is from deashing evaporimeter.
Background
The evaporator is used as a main heating surface of the waste heat boiler, is an important component in a waste heat boiler system, directly influences the working efficiency and stability of the waste heat boiler, and has great significance for safe and stable operation of the boiler. In the waste heat boiler, the traditional evaporator mainly has the following problems: the high-temperature flue gas erodes the evaporator piping, makes intraductal low temperature medium and outside the tubes high temperature flue gas carry out the heat transfer, because have impurity such as acid material and ash particle in the flue gas, and the viscidity of impurity is great, leads to ash particle adhesion in the flue gas to the evaporator piping wall, when the pipe wall temperature is less than flue gas dew point temperature, causes the pipe wall to take place stifled ash wearing and tearing and low temperature corrosion, reduces evaporator piping life.
To solve this problem, the conventional method is to manually and periodically clean the ash or replace the evaporator piping. However, the proposal increases the overhaul and maintenance cost, has low economy, and is difficult to modify the boiler which is already put into operation due to space limitation.
Fuels such as biomass, solid waste, municipal domestic waste and the like usually contain a large amount of chlorine elements, and are rapidly gasified after entering a hearth, so that flue gas usually contains corrosive gases such as HCl and the like, and the gases react with the wall of a metal pipe within a certain temperature range to damage an oxidation film, so that the high-temperature corrosion of the pipe wall is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a waste heat boiler antisweat is from deashing evaporimeter.
The utility model adopts the following technical scheme:
the utility model provides a waste heat boiler antisweat is from deashing evaporimeter, installs in waste heat boiler convection flue, including evaporimeter top backplate and evaporimeter piping, evaporimeter top backplate is located waste heat boiler antisweat is from deashing evaporimeter top, and evaporimeter piping is arranged to inside and below of evaporimeter top backplate, and rapping device is connected to evaporimeter top backplate side, and evaporimeter piping is the bushing structure, including inlet tube, import collection box, downcomer, tedge, export collection box and stand-off pipe, and the inlet tube is connected to import collection box side, and the downcomer that the lower part was arranged in a row links to each other, the downcomer passes behind the export collection box, nests in the tedge inboard, the tedge links to each other with the export collection box, and export collection box side links to each other with the stand-off pipe.
Preferably, the evaporator piping and the evaporator top guard plate are integrally hung below the hanging device through the lifting lugs.
Preferably, the hanging device is free of a limiting device except for the hanging point and is in a freely hanging state. In the operation process of the boiler, the evaporator tube system can freely oscillate under the actions of knocking of the rapping device and flue gas scouring, so that ash attached to the tube wall falls off, and the boiler has self-ash-cleaning capability.
Preferably, the outlet header and the inlet header are mounted in the top cover of the evaporator.
Preferably, the rapping device comprises a rapping cylinder and a rapping hammer head, the rapping cylinder is connected with the rapping hammer head in a driving mode, and the rapping hammer head faces to the top guard plate of the evaporator.
The beneficial effects of the utility model are that:
one of them, the utility model discloses a sleeve pipe structure, pipe surface wall temperature is higher than flue gas dew point temperature, can avoid receiving the hot side surface dewfall to take place low temperature corrosion. And the temperature of the wall surface is in a non-high temperature corrosion interval, and the method is particularly suitable for boilers with more corrosive components in flue gas.
And secondly, the utility model discloses strike and the flue gas erodees can the free oscillation down in rapping device, makes the ash that adheres to on the pipe wall drop, prevents the pipe wall deposition, has from the deashing ability, can reduce its maintenance, maintenance cost, guarantees the long-term stable high-efficient operation of boiler.
Thirdly, the utility model discloses the evaporimeter piping adopts the natural circulation mode through setting up the sleeve pipe structure, and the working medium leans on the density difference to flow, need not to set up the water pump, can practice thrift the station service power, improves the thermal efficiency of power plant.
And fourthly, the utility model discloses a wholly dispatch from the factory, the installation only needs to be hung on the scene, connects import and export pipe, has reduced site operation's work load.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of an evaporator piping system according to the present invention;
in the figure: 1. the device comprises an evaporator top guard plate, 2, an evaporator piping system, 3, a rapping device, 4, a lifting lug, 5, a hanging device, 6, an inlet pipe, 7, an inlet header, 8, a downcomer, 9, an ascending pipe, 10, an outlet header, 11 and an outlet pipe.
Detailed Description
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
example (b): as shown in figure 1, a waste heat boiler antisweat is from deashing evaporimeter, including evaporimeter top backplate 1, evaporimeter piping 2, rapping device 3, lug 4, cable suspension device 5, install in waste heat boiler convection current flue, evaporimeter top backplate 1 is located waste heat boiler antisweat is from deashing evaporimeter top, and rapping device 3 is connected to the side, and evaporimeter top backplate 1 top is passed through lug 4 and is linked to each other with cable suspension device 5, and evaporimeter piping 2 is arranged to inside and below.
As shown in fig. 2, the evaporator piping system 2 is a sleeve structure, and comprises an inlet pipe 6, an inlet header 7, a downcomer 8, a riser 9, an outlet header 10 and an outlet pipe 11, wherein the side surface of the inlet header 7 is connected with the inlet pipe 6, the lower part of the inlet header is connected with the downcomer 8 arranged in rows, the downcomer 8 penetrates through the outlet header 10 and then is nested inside the riser 9, the riser 9 is connected with the outlet header 10, and the side surface of the outlet header 10 is connected with the outlet pipe 11.
The utility model discloses a theory of operation is: saturated water from the steam drum enters the inlet header 7 through the inlet pipe 6, working medium from the inlet header flows downwards in the descending pipe 8, then flows upwards in the ascending pipe 9 on the outer side after being turned by 180 degrees at the lower part, and the heated working medium in the ascending pipe enters the outlet header 10 and enters the steam drum from the outlet pipe 11. The outer wall of the ascending pipe 9 is heated by high-temperature flue gas to raise the temperature of the working medium in the pipe, the density of the working medium in the ascending pipe 9 is smaller than that of saturated water in the descending pipe, and the working medium in the pipe keeps flowing naturally by virtue of power generated by density difference and is in a natural circulation mode.
The evaporator pipe system 2 and the evaporator top guard plate 1 are integrally hung below the hanging device 5 through the lifting lugs 4, and the evaporator pipe system is free of a limiting device except a hanging point and is in a free hanging state. In the operation process of the boiler, the evaporator pipe system 2 can freely oscillate under the actions of knocking by the rapping device 3 and flue gas scouring, so that ash attached to the pipe wall falls off, and the self-cleaning capability is realized.
The anti-condensation self-cleaning ash evaporator of the waste heat boiler can avoid low-temperature corrosion caused by condensation on the surface of a heated surface. And the temperature of the wall surface is in a non-high temperature corrosion interval, and the method is particularly suitable for boilers with more corrosive components in flue gas. The utility model discloses the ash that enables to adhere to on the pipe wall drops, prevents the pipe wall deposition, has from the deashing ability, can reduce its maintenance, maintenance cost, guarantees the long-term stable high-efficient operation of boiler. The utility model discloses a natural circulation mode, working medium lean on the density difference to flow, need not to set up the water pump, can practice thrift the station service power, improve the thermal efficiency of power plant.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (5)
1. The utility model provides a waste heat boiler antisweat is from deashing evaporimeter, installs in waste heat boiler convection flue, including evaporimeter top backplate (1) and evaporimeter piping (2), evaporimeter top backplate (1) is located waste heat boiler antisweat is from deashing evaporimeter top, and evaporimeter top backplate (1) is inside and the below arranges evaporimeter piping (2), characterized by, rapping device (3) are connected to evaporimeter top backplate (1) side, and evaporimeter piping (2) are the bushing structure, including inlet tube (6), import header (7), downcomer (8), tedge (9), export header (10) and outlet pipe (11), and inlet header (6) are connected to import header (7) side, and the lower part links to each other with downcomer (8) that the in bank was arranged, after outlet header (8) passed outlet header (10), nested in tedge (9) inboard, tedge (9) link to each other with export header (10), and outlet header (10) side links to each other with outlet pipe (11).
2. The anti-condensation self-cleaning evaporator of the waste heat boiler as claimed in claim 1, characterized in that the evaporator pipe system (2) and the evaporator top guard plate (1) are integrally hung below the hanging device (5) through the hanging lugs (4).
3. The anti-dewing self-cleaning evaporator of the waste heat boiler as claimed in claim 2, characterized in that the hanging device (5) has no limit device except for the hanging point and is in a freely hanging state.
4. The anti-dewing self-cleaning evaporator of the waste heat boiler as claimed in claim 1, characterized in that the outlet header (10) and the inlet header (7) are mounted in the top protecting plate (1) of the evaporator.
5. The anti-dewing self-ash-cleaning evaporator of the waste heat boiler as claimed in claim 1, wherein the rapping device (3) comprises a rapping cylinder and a rapping hammer head, the rapping cylinder is in driving connection with the rapping hammer head, and the rapping hammer head faces the top protection plate (1) of the evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221335255.XU CN217844901U (en) | 2022-05-31 | 2022-05-31 | Anti-condensation self-ash-cleaning evaporator of waste heat boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221335255.XU CN217844901U (en) | 2022-05-31 | 2022-05-31 | Anti-condensation self-ash-cleaning evaporator of waste heat boiler |
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| Publication Number | Publication Date |
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| CN217844901U true CN217844901U (en) | 2022-11-18 |
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| CN202221335255.XU Active CN217844901U (en) | 2022-05-31 | 2022-05-31 | Anti-condensation self-ash-cleaning evaporator of waste heat boiler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773493A (en) * | 2022-11-30 | 2023-03-10 | 江苏东九重工股份有限公司 | U-shaped natural circulation boiler evaporation tube bundle |
| CN116222265A (en) * | 2023-03-20 | 2023-06-06 | 山东亿科化学有限责任公司 | Closed circulation radiator for oil refining chemical industry |
| CN116839391A (en) * | 2023-07-26 | 2023-10-03 | 天津华能北方热力设备有限公司 | Vertical evaporator |
-
2022
- 2022-05-31 CN CN202221335255.XU patent/CN217844901U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773493A (en) * | 2022-11-30 | 2023-03-10 | 江苏东九重工股份有限公司 | U-shaped natural circulation boiler evaporation tube bundle |
| CN116222265A (en) * | 2023-03-20 | 2023-06-06 | 山东亿科化学有限责任公司 | Closed circulation radiator for oil refining chemical industry |
| CN116222265B (en) * | 2023-03-20 | 2023-09-05 | 山东亿科化学有限责任公司 | Closed circulation radiator for oil refining chemical industry |
| CN116839391A (en) * | 2023-07-26 | 2023-10-03 | 天津华能北方热力设备有限公司 | Vertical evaporator |
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