CN214664336U - Lifting type boiler heating surface - Google Patents
Lifting type boiler heating surface Download PDFInfo
- Publication number
- CN214664336U CN214664336U CN202120276824.7U CN202120276824U CN214664336U CN 214664336 U CN214664336 U CN 214664336U CN 202120276824 U CN202120276824 U CN 202120276824U CN 214664336 U CN214664336 U CN 214664336U
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- Prior art keywords
- header
- small
- flue
- outlet
- heating surface
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- Expired - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 239000010865 sewage Substances 0.000 claims description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 19
- 239000003546 flue gas Substances 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Images
Abstract
The utility model relates to a lifting boiler heating surface, which comprises a flue, a small top header, a plurality of heating surface pipes and a small bottom header; the small top header is arranged at the top of the flue and communicated with the heated surface pipe, an outlet header is arranged right above the small top header and communicated with the outlet header, and a medium outlet is arranged on the outlet header; the plurality of heated surface tubes are vertically arranged in parallel, the top ends of the plurality of heated surface tubes are communicated with the top small collecting box, and the bottom ends of the plurality of heated surface tubes are communicated with the bottom small collecting box; the small bottom header is arranged in the flue; the bottom of the flue is positioned at two sides of the small bottom header and is provided with a bottom side header. The utility model discloses a lift-draw formula boiler receives hot side has solved the problem of leaking out of traditional structure to adopt the low point blowdown structure, thoroughly arrange the ponding of boiler receiving hot side to the greatest extent, and avoided the "vapour stopper" problem of receiving hot side.
Description
Technical Field
The utility model relates to a waste heat boiler technical field, especially a lift-draw formula boiler receives hot side.
Background
At present, a waste heat boiler mainly utilizes flue gas generated in various industrial processes, and recovers heat in the flue gas and produces hot water or steam for other sections to use through a plurality of heat exchange tubes arranged in the waste heat boiler; after the heat exchange of the flue gas, the dust in the flue gas is discharged from a discharge hole formed below the waste heat boiler, and other gases in the flue gas enter the next procedure from a smoke outlet above for treatment.
At present, a plurality of waste heat boilers are all in hanging screen type structures, and circulating systems thereof are as follows: the medium passes through the heating surface coiled pipe from the inlet header, is heated by the flue gas scouring, enters the outlet header, and is finally sent into the boiler barrel or the heat utilization equipment. The header of the system is arranged at the top, so that normal pollution discharge cannot be realized; the top heated surface pipe needs to penetrate through the furnace wall and can only be poured by refractory concrete, so that the air leakage problem exists, and the heat exchange efficiency is reduced; in addition, accumulated water in the serpentine pipe cannot be drained completely, and the serpentine pipe is shut down and maintained in winter, so that the serpentine pipe is easy to frost crack; the serpentine pipe is long, and the medium has a steam plug at a certain position in the pipe.
The Chinese utility model with publication number CN210832032U discloses a novel economizer structure of a waste incineration exhaust-heat boiler, which can solve the problem of pipe explosion caused by easy generation of welding internal stress while solving the problem of drainage of the economizer, which comprises heating surface pipes arranged in parallel, wherein each row of heating surface pipes comprises end straight pipes at two sides and a U-shaped pipe positioned in the middle and provided with a downward opening, the bottom of the end straight pipe and the adjacent U-shaped pipes are respectively connected with a lower collecting tank through bent pipes, the bottom of each lower collecting tank is connected with a drainage collecting tank through a connecting pipe, the drainage header is provided with drainage pipes, the top of one end straight pipe is connected with the inlet header, the top of the other end straight pipe is connected with the outlet header, the U-shaped pipe comprises two middle straight pipes, and the tops of the two middle straight pipes are connected through semicircular elbows in a welded mode. However, accumulated water in the U-shaped pipe is difficult to drain, and the hidden danger of frost cracking of the pipe bundle can be caused by stopping the furnace and maintaining the pipe bundle in winter.
Therefore, it is desirable to provide a lifting type boiler heating surface for solving the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lift-draw formula boiler receives hot side has solved the problem of leaking out of traditional structure to adopt the low point blowdown structure, thoroughly arrange the ponding of boiler receiving hot side to the greatest extent.
In order to achieve the purpose of the utility model, the utility model provides a lifting type boiler heating surface, which comprises a flue, a small top header, a plurality of heating surface pipes and a small bottom header;
one end of the flue is a flue gas inlet, and the other end of the flue is a flue gas outlet;
the small top header is arranged at the top of the flue and communicated with the heated surface pipe, an outlet header is arranged right above the small top header and communicated with the outlet header, and a medium outlet is arranged on the outlet header;
the plurality of heated surface tubes are vertically arranged in parallel, the top ends of the plurality of heated surface tubes are communicated with the top small collecting box, and the bottom ends of the plurality of heated surface tubes are communicated with the bottom small collecting box;
the bottom small header is arranged in the flue and is positioned right below the top small header; the bottom of the flue is located at two sides of the bottom small header and is provided with a bottom side header, the bottom side header is communicated with the bottom small header, and the bottom side header is provided with a medium inlet and a low-point sewage outlet.
Preferably, a flat steel is arranged at a gap between adjacent top small headers at the top of the flue, and the top small headers are welded with the flat steel.
Preferably, the edge position of the flat steel is provided with an expansion and contraction joint, and the flat steel is connected with a top steel frame of the flue through the expansion and contraction joint.
Preferably, the heated surface tube is a straight tube.
Preferably, the side below that the bottom of flue is located the low point drain is equipped with an album dirty groove, the bottom in album dirty groove is equipped with an album dirty groove drain, be equipped with the valve on the dirty groove drain of collection.
Preferably, a plurality of access doors are arranged on the flue.
Preferably, the medium discharged from the medium outlet is water.
Preferably, the medium inlet is arranged at the side position of the bottom side header, and the low-point sewage draining outlet is arranged at the bottom middle position of the bottom side header.
The utility model discloses a lift-draw formula boiler heating surface compares with prior art and has following advantage:
(1) the top and bottom headers are arranged, the stored water on the heating surface can be completely drained through the bottom header, and the top heating surface pipe is of a full-sealed expansion structure, so that the problem at the position is thoroughly solved;
(2) the problem of air leakage of the traditional structure is solved, and the accumulated water on the heating surface of the boiler is thoroughly drained by adopting a low-point pollution discharge structure;
(3) the small header at the top and the connecting flat steel form a membrane type wall structure to participate in heat exchange of the boiler, so that the heating surface area of the boiler is increased, and the evaporation capacity of the boiler is improved; the heated surface pipe adopts a straight pipe structure, so that the generation of a steam plug phenomenon is avoided;
(4) simple structure and convenient and fast use.
Drawings
FIG. 1 is a schematic structural view of a heating surface of a lift-type boiler in the present embodiment;
FIG. 2 is an enlarged view of a portion of the top header of FIG. 1 attached to a flat bar;
FIG. 3 is an enlarged view of a portion of the dirt collection tank of FIG. 1;
FIG. 4 is a schematic structural view of a heated surface of a hanging-screen boiler in a comparative example.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1-3, a lifting boiler heating surface comprises a flue, a top small header 2, a plurality of heating surface pipes 5 and a bottom small header 6;
one end of the flue is a flue gas inlet, and the other end of the flue is a flue gas outlet;
the small top header 2 is arranged at the top of the flue, the small top header 2 is communicated with a heated surface pipe 5, an outlet header 1 is arranged right above the small top header 2, the small top header 2 is communicated with the outlet header 1, a medium outlet is arranged on the outlet header 1, and specifically, the medium discharged by the medium outlet is water;
the top ends of the plurality of heated surface tubes 5 are communicated with the top small header 2, and the bottom ends of the plurality of heated surface tubes 5 are communicated with the bottom small header 6; preferably, the heated surface pipe 5 is a straight pipe, so that the phenomenon of steam plug is avoided;
the bottom small header 6 is arranged in the flue and is positioned right below the top small header 2; bottom side collecting boxes 7 are arranged at the bottom of the flue and positioned at two sides of the bottom small collecting box 6, the bottom side collecting boxes 7 are communicated with the bottom small collecting box 6, and a medium inlet and a low-point sewage outlet are formed in each bottom side collecting box 7; specifically, the medium inlet is arranged at the side position of the bottom side header 7, and the low-point sewage draining outlet is arranged at the bottom middle position of the bottom side header 7.
The utility model discloses a circulation mode of lift-draw formula boiler heating surface does: after being introduced into the heated surface pipe 5 from the bottom side header 7 through the bottom small header 6, the medium is heated by the flue gas scouring and then enters the top small header 2, is introduced into the outlet header 1, and finally is sent to an external boiler barrel or a heat utilization device.
In this embodiment, in order to further guarantee heat exchange efficiency, be located the clearance department between the top small header 2 of the top of flue is adjacent is equipped with band steel 4, top small header 2 and band steel 4 welding. Preferably, in order to offset adverse effects caused by thermal expansion of metals, the edge position of the flat steel 4 is provided with a telescopic joint 3, and the flat steel 4 is connected with a top steel frame of the flue through the telescopic joint 3.
Considering that the sewage discharged from the low-point sewage outlet on the bottom side collecting box 7 is temporarily collected, a sewage collecting groove 12 is arranged below the side of the bottom of the flue, which is positioned at the low-point sewage outlet, a sewage collecting groove sewage outlet 13 is arranged at the bottom of the sewage collecting groove 12, and a valve is arranged on the sewage collecting groove sewage outlet 13.
In order to monitor and maintain the conditions in the flue conveniently, a plurality of access doors are arranged on the flue.
The utility model discloses the theory of operation/method of device do: the method comprises the following steps:
Comparative example
As shown in fig. 4, the circulation system is a conventional hanging-screen boiler heating surface, and the circulation mode of the circulation system is as follows: the medium passes through a heating surface coiled pipe 11 from an inlet header 10, is heated by flue gas scouring, enters an outlet header 9, and is finally sent into a boiler barrel or a heat utilization device.
The system header is arranged at the top, and normal pollution discharge cannot be realized; the top heated surface pipe needs to penetrate through the furnace wall and can only be poured by refractory concrete, so that the air leakage problem exists, and the heat exchange efficiency is reduced; accumulated water in the serpentine pipe cannot be drained completely, and the tube bundle is easy to be frozen and cracked when the furnace is shut down and the tube bundle is maintained in winter in the north.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited thereto, and that various changes and modifications may be made without departing from the spirit of the invention.
Claims (8)
1. A lifting type boiler heating surface is characterized by comprising a flue, a small top header, a plurality of heating surface pipes and a small bottom header;
one end of the flue is a flue gas inlet, and the other end of the flue is a flue gas outlet;
the small top header is arranged at the top of the flue and communicated with the heated surface pipe, an outlet header is arranged right above the small top header and communicated with the outlet header, and a medium outlet is arranged on the outlet header;
the plurality of heated surface tubes are vertically arranged in parallel, the top ends of the plurality of heated surface tubes are communicated with the top small collecting box, and the bottom ends of the plurality of heated surface tubes are communicated with the bottom small collecting box;
the bottom small header is arranged in the flue and is positioned right below the top small header; the bottom of the flue is located at two sides of the bottom small header and is provided with a bottom side header, the bottom side header is communicated with the bottom small header, and the bottom side header is provided with a medium inlet and a low-point sewage outlet.
2. The heating surface of a lifting boiler as claimed in claim 1, wherein the gap between the adjacent small top header boxes at the top of the flue is provided with flat steel, and the small top header boxes are welded with the flat steel.
3. The heating surface of a lifting boiler as claimed in claim 2, wherein the edge of the flat steel is provided with expansion and contraction joints, and the flat steel is connected with the top steel frame of the flue through the expansion and contraction joints.
4. The heating surface of a lifting type boiler as claimed in claim 1, wherein the heating surface tube is a straight tube.
5. The heating surface of a lifting boiler as claimed in any one of claims 1 to 4, wherein a sewage collecting tank is arranged below the bottom of the flue at the side of the low-point sewage outlet, a sewage outlet of the sewage collecting tank is arranged at the bottom of the sewage collecting tank, and a valve is arranged on the sewage outlet of the sewage collecting tank.
6. The heating surface of a lifting type boiler as claimed in any one of claims 1 to 4, wherein a plurality of access doors are provided on the flue.
7. The lifting type boiler heating surface according to any one of claims 1 to 4, wherein the medium discharged from the medium outlet is water.
8. The heating surface of a lifting type boiler as claimed in any one of claims 1 to 4, wherein the medium inlet is arranged at a side position of the bottom side header, and the low-point sewage draining outlet is arranged at a bottom middle position of the bottom side header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120276824.7U CN214664336U (en) | 2021-01-29 | 2021-01-29 | Lifting type boiler heating surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120276824.7U CN214664336U (en) | 2021-01-29 | 2021-01-29 | Lifting type boiler heating surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214664336U true CN214664336U (en) | 2021-11-09 |
Family
ID=78520928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120276824.7U Expired - Fee Related CN214664336U (en) | 2021-01-29 | 2021-01-29 | Lifting type boiler heating surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214664336U (en) |
-
2021
- 2021-01-29 CN CN202120276824.7U patent/CN214664336U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20211109 |