CN206430186U - A kind of waste heat boiler fire door water-cooling wall - Google Patents
A kind of waste heat boiler fire door water-cooling wall Download PDFInfo
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- CN206430186U CN206430186U CN201720003456.2U CN201720003456U CN206430186U CN 206430186 U CN206430186 U CN 206430186U CN 201720003456 U CN201720003456 U CN 201720003456U CN 206430186 U CN206430186 U CN 206430186U
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- water
- heated pipeline
- heat boiler
- flue
- waste heat
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Abstract
The utility model discloses a kind of waste heat boiler fire door water-cooling wall, including：Mouth fixed section flue (1), the tube wall of flue is fin panel casing (4), including multiple connected heated pipelines, and recirculated water is cooled down by heat pipe group；Annular water-inlet header (2), is arranged on the bottom of mouth fixed section flue, for recirculated water uniformly to be conveyed to flue；Annular steam collecting container (3), is arranged on the top of mouth fixed section flue, receives the recirculated water in flue.A kind of waste heat boiler fire door water-cooling wall of the present utility model, using the fin panel casing of snakelike comb, Converter Residual Heat Boiler mouth fixed section and the water collateral resistance of oxygen rifle inserting paragraph can be made to balance each other, current are conducive to distribute, it is not used on circulating water line increasing regulating valve, the flow in circulation line is increased, is reduced investment outlay and operating cost.
Description
Technical field
The utility model is related to the Converter Residual Heat Boiler of metallurgy industry, more particularly to a kind of waste heat boiler fire door water-cooling wall.
Background technology
Converter Residual Heat Boiler is the visual plant for participating in steel-making, is responsible for cooled flue gas, is that gas recovery creates conditions, simultaneously
Using converter gas waste heat, substantial amounts of steam is reclaimed, is realized and is born and can make steel, the situation of Converter Residual Heat Boiler directly affects steel-making and turned
The normal production of stove, occupies highly important status in steel mill.
Converter is generally divided into small-sized, medium-sized and mammoth conveter according to steel loading amount, 40t~80t converters be baby Bessemer converter, 80~
180t is that Medium Converter, more than 180t are mammoth conveter, most with Medium Converter in domestic steel mill.Medium Converter waste heat boiler from
Substantially it is divided into movable gas hood, mouth fixed section, oxygen rifle inserting paragraph, one section of flue, two sections of flue, latter end flues totally six in structure
Point.Wherein, movable gas hood is the low force circulatory system, and 0.2~0.4MPa of system working pressure, recirculated cooling water comes from deoxygenation
Water tank, low pressure recycle water pump delivers to deaerated water after movable gas hood heat absorption, and the steam water interface of formation is returned to deoxygenation water tank, raw
Into steam be used for heating the cold water into oxygen-eliminating device；Mouth fixed section, oxygen rifle inserting paragraph are middle pressure forced circulation system, system
1.2~2.45MPa of operating pressure, recirculated water comes from drum, and are delivered into mouth fixed section by water for Medium pressure cycle water pump and oxygen rifle is inserted
After section heat absorption, the steam water interface of formation returns to drum and carries out steam-water separation；One section of flue, two sections of flues, latter end flues are certainly
The right circulatory system, recirculated water is after drum enters each section of flue heat absorption through down-comer, and the steam water interface of formation passes through tedge
Return to drum and carry out steam-water separation, its circulation power is that the water density in down-comer and tedge is poor.
At present, the service life of waste heat boiler of converter is very short, and the life-span of epimere cooling stack is 6~8 years or so,
Movable gas hood, mouth fixed section flue, service condition are severe, and the life-span is only 1 year or so.By running for many years, waste heat is summed up
The service life of boiler it is short mainly by six aspects the problem of caused, the i.e. quality problem of recirculated cooling water, forced circulation matches somebody with somebody
Water inequality problem, Natural Circulation safety issue, drum low pressure operation problem, thermal expansion problem, stress fatigue problem.
And the wherein uneven problem of forced circulation water distribution is protruded the most, mouth fixed section flue and oxygen rifle insertion are especially reflected in
Section flue.Press that forced circulation system, water circulating pump deliver to mouth fixed section after cooling water is pressurizeed and oxygen rifle is inserted in waste heat boiler
Enter near section, be divided into two branch roads, all the way furnace entrance canned paragraph feedwater lower collecting box, oxygen rifle inserting paragraph feedwater lower collecting box is entered on another road,
Mouth fixed section and the water-carrying capacity allocation proportion of oxygen rifle inserting paragraph are essentially 1:3 (on the premise of flue diameter is the same, due to refining
Steel-Structure Factory with Steel platform and oxygen rifle mouthful, feed opening positioning etc. will meet process for making requirement, mouth fixed section and the cigarette of oxygen rifle inserting paragraph
Road length ratio is substantially 1:3), and in actual motion often there is mouth fixed section inflow many, and oxygen rifle inserting paragraph is entered
Water is few, the situation for causing oxygen rifle inserting paragraph flue to burn out, and is especially particularly easy to occur this when water circulating pump design discharge is few
The situation of kind, it is due to enter water-inlet header from water to trace it to its cause, and enters the mistake that steam collecting container comes out by the heated pipeline of water-cooling wall
Cheng Zhong, mouth fixed section is shorter than oxygen rifle inserting paragraph flow path, and corresponding resistance is small, and substantial amounts of water is all logical from mouth fixed section
Cross, cause oxygen rifle inserting paragraph water shortage.Take installs manual modulation valve more on two laterals now, adjusts flow, and choosing
The problem of water head allocation is uneven is solved with the method for big flow water circulating pump.It has the disadvantage waste heat boiler intermitten service, causes
Flow-rate adjustment needs operations staff constantly to grope, and often adjusts valve.It is simultaneously bright from the increase of big flow water circulating pump power consumption
It is aobvious, run uneconomical.
Every section of flue of Converter Residual Heat Boiler is by lower water inlet ring header, fin panel casing (pipe iris type) or solid matter
Pipe water-cooling wall, upper collecting ring shape header composition.Header above and below the comb UNICOM of water-cooling wall on ring header wall up and down, it is necessary to open
One collar aperture is used to connect, because water-cooling wall comb is very close, so that the perforate on ring header links together substantially up and down,
As annular elongated slot, very high so is required to device fabrication, if comb and the welding of header interface, reinforcement do it is bad, when
Flue bessemerize with blow off replace thermic load change under, interface be easy to produce stress fatigue, bond open leak,
Cause the accident.
Utility model content
The purpose of this utility model is to provide a kind of waste heat boiler fire door water-cooling wall, can be to mouth fixed section and oxygen rifle
Inserting paragraph water collateral resistance is balanced.
To achieve the above object, a kind of concrete technical scheme of waste heat boiler fire door water-cooling wall of the present utility model is：
A kind of waste heat boiler fire door water-cooling wall, including：Mouth fixed section flue, the tube wall of flue is fin panel casing, bag
Multiple connected heated pipelines are included, recirculated water is cooled down by heat pipe group；Annular water-inlet header, is arranged on mouth fixed section
The bottom of flue, for recirculated water uniformly to be conveyed to flue；Annular steam collecting container, is arranged on the upper of mouth fixed section flue
Portion, receives the recirculated water in flue.
Further, the fin panel casing of mouth fixed section flue be in bending, including first be sequentially connected be heated pipeline,
Second heated pipeline and the 3rd heated pipeline, the first heated pipeline are connected with annular steam collecting container, the 3rd heated pipeline and ring
Shape water-inlet header is connected.
Further, it is provided with dividing plate between the first heated pipeline and the second heated pipeline.
Further, it is provided with dividing plate between the second heated pipeline and the 3rd heated pipeline.
Further, it is connected between the first heated pipeline and the second heated pipeline by the first elbow, the rotation of the first elbow
Gyration is 160 °~180 °.
Further, it is connected between the second heated pipeline and the 3rd heated pipeline by the second elbow, the rotation of the second elbow
Gyration is 160 °~180 °.
Further, the first heated pipeline, the second heated pipeline and/or the 3rd heated pipeline are using the seamless steel of high-pressure boiler
Pipe.
Further, the interface between annular water-inlet header and the first heated pipeline is provided with stub (tube).
Further, the interface between annular steam collecting container and the 3rd heated pipeline is provided with stub (tube).
A kind of advantage of waste heat boiler fire door water-cooling wall of the present utility model is：
1) using the fin panel casing of snakelike comb, water-flowing path is heated by the length increase of a heated pipeline for three
Water circulation resistance in the length of pipeline, heated pipeline has accordingly increased three times, so that Converter Residual Heat Boiler mouth fixed section
Balanced each other with the water collateral resistance of oxygen rifle inserting paragraph, be conducive to current to distribute, be not used on circulating water line increasing regulating valve, increased
Flow in circulation line, reduces investment outlay and operating cost；
2) pipeline that is heated punches reduction 2/3rds in annular water-inlet header and the interface on annular steam collecting container, adds
Heat pipe punched on header between distance, be the stub (tube) vacating space of interface welding, in boiler factory manufacture installation side
Just；
3) pipeline that is heated is connected with the interface of water inlet ring header and collecting ring shape header using stub (tube), and stub (tube) is
Finished product is manufactured, and antifatigue degree is strong, and commissure antileaking extends the service life of mouth fixed section.
Brief description of the drawings
Fig. 1 is the structural representation of waste heat boiler fire door water-cooling wall of the present utility model；
Fig. 2 is the top view of waste heat boiler fire door water-cooling wall of the present utility model；
Fig. 3 be Fig. 2 in fin panel casing partial enlarged drawing；
Fig. 4 is the structural representation of heating surface of the present utility model.
Embodiment
In order to be better understood by the purpose of this utility model, structure and function, below in conjunction with the accompanying drawings, to of the present utility model
A kind of waste heat boiler fire door water-cooling wall does further detailed description.
As shown in Figures 1 to 4, it is shown as a kind of waste heat boiler fire door water-cooling wall of the present utility model, including fire door is fixed
Section flue 1, annular water-inlet header 2 and annular steam collecting container 3, the tube wall of flue is fin panel casing, including it is multiple it is connected by
Hot channel, recirculated water is cooled down by heat pipe group；Annular water-inlet header 2 is arranged on the bottom of mouth fixed section flue, uses
Uniformly conveyed to flue in by recirculated water；Annular steam collecting container 3 is arranged on the top of mouth fixed section flue, receives in flue
Recirculated water.
Further, the fin panel casing 4 of mouth fixed section flue is in bending, including the heated pipeline of first be sequentially connected
41st, the second heated pipeline 42 and the 3rd is heated pipeline 43, and the first heated pipeline 41 is connected with annular steam collecting container 1, the 3rd by
Hot channel 43 is connected with annular water-inlet header 3.Be provided with addition, the first heated pipeline 41 and second is heated between pipeline 42 every
The preferably first heated pipeline 43 of the heated heated pipeline 42 and the 3rd of pipeline 41, second bends serpentine-like in plate 44, the utility model.
Also, it is provided with dividing plate 44 between the second heated heated pipeline 43 of pipeline 42 and the 3rd.Heat pipe group 4 in the utility model
(the first heated pipeline 43 of the heated heated pipeline 42 and the 3rd of pipeline 41, second) and dividing plate formation heating surface.
Wherein, it is connected between the first heated pipeline 41 and the second heated pipeline 42 by the first elbow, the first elbow
The anglec of rotation is 160 °~180 °.In addition, being connected between the second heated pipeline 42 and the 3rd heated pipeline 43 by the second elbow
Logical, the anglec of rotation of the second elbow is 160 °~180 °.The first heated pipeline of the heated heated pipeline 42 and the 3rd of pipeline 41, second
43 use seamless steel tubes and pipes for high pressure boiler, using on the mouth fixed section flue of middle pressure forced circulation.
The fin panel casing 4 of serpentine arrangement is used in the utility model, water-flowing path is increased by the length of a heated pipeline
The length of three heated pipelines is added as, the water circulation resistance in heated pipeline has accordingly increased three times, so that converter waste heat pot
Stove mouth fixed section presses 1 with oxygen rifle inserting paragraph water-carrying capacity:3 distribution, water collateral resistance balances each other, is conducive to current to distribute, is not used in
Increase regulating valve on circulating water line, increase pump flow, reduce investment outlay and operating cost.
Wherein, the interface between the heated pipeline 41 of annular water-inlet header 2 and first is provided with stub (tube), annular collection vapour connection
The interface that case 3 and the 3rd is heated between pipeline 43 is provided with stub (tube), and stub (tube) is that finished product is manufactured, by stub (tube) by header and
Heated pipeline links together, and antifatigue degree is strong, and commissure antileaking extends the service life of mouth fixed section, by
The interface of hot channel and header punches and reduces 2/3rds, add heated pipeline punched on header between distance, be
It is easy for installation that interface welds manufacture in stub (tube) vacating space, boiler factory.
A kind of course of work of waste heat boiler fire door water-cooling wall of the present utility model is described below in conjunction with the accompanying drawings：
Recirculated water passes through right side first from annular water-inlet header 2 enters the fin panel casing of mouth fixed section flue
3rd heated pipeline 43 travels up to top, enters the heated pipeline 42 of middle second by 180 ° of the first elbow in top,
Current enter the first heat pipe of the leftmost side after the second heated pipeline 42 down through the second elbow of 180 ° of bottom
Road 41, then annular steam collecting container 3 is flowed up into, form a cooling channel.
A kind of waste heat boiler fire door water-cooling wall of the present utility model, using the fin panel casing of snakelike comb, water-flowing path
By length of the length increase of a heated pipeline for three heated pipelines, the water circulation resistance in heated pipeline is accordingly increased
Three times, so that Converter Residual Heat Boiler mouth fixed section and the water collateral resistance of oxygen rifle inserting paragraph balance each other, current are conducive to distribute,
It is not used on circulating water line increasing regulating valve, increases the flow in circulation line, reduces investment outlay and operating cost；Heat pipe
Road punches reduction 2/3rds in annular water-inlet header and the interface on annular steam collecting container, adds heat pipe and is opened on header
The distance between hole, is that manufacture is easy for installation in the stub (tube) vacating space of interface welding, boiler factory；Heated pipeline and water inlet
The interface of ring header and collecting ring shape header is connected using stub (tube), and stub (tube) manufactures for finished product, and antifatigue degree is strong, weldering
Antileaking at seam, extends the service life of mouth fixed section.
The utility model is further described by specific embodiment above, it should be understood that, have here
The description of body, should not be construed as the restriction to spirit and scope of the present utility model, and one of ordinary skilled in the art is readding
The various modifications made after reader specification to above-described embodiment, belong to the scope that the utility model is protected.
Claims (9)
1. a kind of waste heat boiler fire door water-cooling wall, it is characterised in that including：
Mouth fixed section flue (1), the tube wall of flue is fin panel casing (4), including multiple connected heated pipelines, recirculated water
Cooled down by heat pipe group；
Annular water-inlet header (2), is arranged on the bottom of mouth fixed section flue (1), for recirculated water uniformly to be conveyed to flue；
Annular steam collecting container (3), is arranged on mouth fixed section flue (1) top, receives the recirculated water in flue.
2. waste heat boiler fire door water-cooling wall according to claim 1, it is characterised in that the membrane type water of mouth fixed section flue
Cold wall is in bending, including the heated pipeline (41) of first be sequentially connected, the second heated pipeline (42) and the 3rd heated pipeline
(43), the first heated pipeline (41) is connected with annular steam collecting container (2), the 3rd heated pipeline (43) and annular water-inlet header
(3) it is connected.
3. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that the first heated pipeline (41) and second
Dividing plate (44) is provided between heated pipeline (42).
4. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that the second heated pipeline (42) and the 3rd
Dividing plate (44) is provided between heated pipeline (43).
5. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that the first heated pipeline (41) and second
It is connected between heated pipeline (42) by the first elbow, the anglec of rotation of the first elbow is 160 °~180 °.
6. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that the second heated pipeline (42) and the 3rd
It is connected between heated pipeline (43) by the second elbow, the anglec of rotation of the second elbow is 160 °~180 °.
7. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that the first heated pipeline (41), second
Heated pipeline (42) and/or the 3rd heated pipeline (43) use seamless steel tubes and pipes for high pressure boiler.
8. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that annular water-inlet header (2) and first
Interface between heated pipeline (41) is provided with stub (tube).
9. waste heat boiler fire door water-cooling wall according to claim 2, it is characterised in that annular steam collecting container (3) and the 3rd
Interface between heated pipeline (43) is provided with stub (tube).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003456.2U CN206430186U (en) | 2017-01-03 | 2017-01-03 | A kind of waste heat boiler fire door water-cooling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003456.2U CN206430186U (en) | 2017-01-03 | 2017-01-03 | A kind of waste heat boiler fire door water-cooling wall |
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| Publication Number | Publication Date |
|---|---|
| CN206430186U true CN206430186U (en) | 2017-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720003456.2U Active CN206430186U (en) | 2017-01-03 | 2017-01-03 | A kind of waste heat boiler fire door water-cooling wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928227A (en) * | 2020-07-08 | 2020-11-13 | 福建省气柜设备安装有限公司 | Steam power generation system with controllable boiler exhaust gas temperature |
| CN112662837A (en) * | 2020-12-08 | 2021-04-16 | 苏州海陆重工股份有限公司 | Skirt cover in converter waste heat boiler |
-
2017
- 2017-01-03 CN CN201720003456.2U patent/CN206430186U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928227A (en) * | 2020-07-08 | 2020-11-13 | 福建省气柜设备安装有限公司 | Steam power generation system with controllable boiler exhaust gas temperature |
| CN112662837A (en) * | 2020-12-08 | 2021-04-16 | 苏州海陆重工股份有限公司 | Skirt cover in converter waste heat boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street No. 45 Patentee after: Alex Hua Tian Baotou design and Research Institute Co., Ltd. Address before: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street No. 45 Patentee before: MCC Dongfang Holding Co Ltd |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 014010 45 Steel Street, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Patentee after: Zhongye Northwest Engineering Technology Co., Ltd. Address before: 014010 45 Steel Street, Kunqu District, Baotou, the Inner Mongolia Autonomous Region Patentee before: Alex Hua Tian Baotou design and Research Institute Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |