CN207632834U - A kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue - Google Patents
A kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue Download PDFInfo
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- CN207632834U CN207632834U CN201721589454.2U CN201721589454U CN207632834U CN 207632834 U CN207632834 U CN 207632834U CN 201721589454 U CN201721589454 U CN 201721589454U CN 207632834 U CN207632834 U CN 207632834U
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- fire door
- comer
- natural circulation
- stove tail
- drum
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Abstract
The utility model proposes a kind of mixture circulatory systems suitable for medium-and-large-sized converter Natural Circulation flue, including drum, fire door tedge, stove tail tedge, fire door forced circulation down-comer, stove tail Natural Circulation down-comer, the both ends of fire door tedge are connected at the top of drum and fire door section flue respectively, the both ends of stove tail tedge are connected at the top of drum and back-end ductwork respectively, the both ends of fire door forced circulation down-comer are connected with drum and fire door section stack base respectively, the both ends of stove tail Natural Circulation down-comer are connected with drum and back-end ductwork bottom respectively, it is equipped between fire door forced circulation down-comer and stove tail Natural Circulation down-comer and declines communicating pipe.The utility model is simple in structure, can improve the circulating effect of back-end ductwork.
Description
Technical field
The utility model belongs to the technical field of pneumatic steelmaking evaporated cooling system Natural Circulation flue, more particularly to a kind of
Mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue.
Background technology
In converter vapourization cooling system, heated each section of evaporated flue is non-uniform, along the flow direction of flue gas, fire door section
Flue calorific intensity is highest, and the back-end ductwork calorific intensity positioned at end is minimum.For Natural Circulation evaporated flue and
Speech, it is better in theoretical scope of design inner flue heat intensity more systemic circulation effect, when flue heat intensity is smaller, circulating effect
It is poor, it is susceptible to the unfavorable phenomenon such as circulatory stasis and table.
For medium-and-large-sized converter, fire door section flue generally use compulsory circulative cooling, the use that back-end ductwork has is strong
Circulating cooling processed, some take natural circulation cooling.Back-end ductwork needs to consume big using individual compulsory circulative cooling system
The electric energy of amount easy tos produce the unfavorable phenomenon of circulating effect difference, in actual production, many uses using full natural circulation cooling
Back-end ductwork leak because of bad be burned of circulating effect of full natural cycle system, and then influence normal STEELMAKING PRODUCTION work
Make.
Invention content
It is big during one kind is suitable for the technical problem to be solved by the utility model is in view of the above problems, provide
The mixture circulatory system of type converter Natural Circulation flue declines fire door forced circulation on the basis of not adding water circulating pump
Pipe accesses in stove tail Natural Circulation down-comer, and certain dynamic head is injected in circulation loop, can improve following for back-end ductwork
Ring effect.
Technical solution is used by the utility model solves above-mentioned technical problem：It is natural that one kind being suitable for medium-and-large-sized converter
The mixture circulatory system of cycle flue, including drum, fire door tedge, stove tail tedge, fire door forced circulation down-comer, stove tail
The both ends of Natural Circulation down-comer, fire door tedge are connected at the top of drum and fire door section flue respectively, stove tail tedge
Both ends respectively be connected at the top of drum and back-end ductwork, the both ends of fire door forced circulation down-comer respectively with drum and fire door section
Stack base is connected, and the both ends of stove tail Natural Circulation down-comer are connected with drum and back-end ductwork bottom respectively, feature
It is, is equipped between fire door forced circulation down-comer and stove tail Natural Circulation down-comer and declines communicating pipe.
By said program, it is equipped with the first shut-off valve, first flowmeter, the successively along liquid flow path direction in the decline communicating pipe
One check-valves and the second shut-off valve.
By said program, the fire door forced circulation down-comer is equipped with water circulating pump and second flowmeter.
By said program, the stove tail Natural Circulation down-comer is equipped with second check-valve.
The utility model has the beneficial effects that：A kind of mixing circulation suitable for medium-and-large-sized converter Natural Circulation flue is provided
Fire door section flue forced circulation water is accessed back-end ductwork circulation line by declining communicating pipe, is recycled in back-end ductwork by system
Certain dynamic head is injected in circuit, by controlling the water of forced circulation branch pipe, is meeting fire door section flue normal work
On the basis of improve back-end ductwork circulating effect, while avoid back-end ductwork using independent forced circulation loop band come largely
Energy consumption, back-end ductwork is run steadily in the long term has positive effect, and this system is simple and reliable, easy to maintain.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Wherein：1- drums, 2- fire door section flues, 3- back-end ductworks, 4- water circulating pumps, 5- fire door forced circulation down-comers,
6- first flowmeters, 7- decline communicating pipe, the first shut-off valves of 8-, 9- second flowmeters, 10- first check-valves, the cut-offs of 11- second
Valve, 12- stove tail Natural Circulation down-comers, 13- second check-valves.
Specific implementation mode
To more fully understand the utility model, the utility model work is further retouched with reference to the accompanying drawings and examples
It states.
As shown in Figure 1, a kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue, including drum 1, stove
Mouth tedge, stove tail tedge, fire door forced circulation down-comer 5, stove tail Natural Circulation down-comer 12, the both ends of fire door tedge
Be connected respectively with drum and the top of fire door section flue 2, the both ends of stove tail tedge respectively with 3 top phase of drum and back-end ductwork
Connection, the both ends of fire door forced circulation down-comer are connected with drum and fire door section stack base respectively, under stove tail Natural Circulation
The both ends of drop pipe are connected with drum and back-end ductwork bottom respectively, and fire door forced circulation down-comer declines with stove tail Natural Circulation
It is equipped between pipe and declines communicating pipe 7.
Decline in communicating pipe and is equipped with the first shut-off valve 8, first flowmeter 6,10 and of first check-valve successively along liquid flow path direction
Second shut-off valve 11；Fire door forced circulation down-comer is equipped with water circulating pump 4 and second flowmeter 9；Stove tail Natural Circulation declines
Pipe is equipped with second check-valve 13.
During normal production, the first and second shut-off valves are opened, by the aperture control for adjusting the first and second shut-off valves
System declines the water (reading of first flowmeter) of communicating pipe, usually controls its water no more than fire door forced circulation down-comer
The aperture of first and second shut-off valves, is disposably adjusted in place by the 10% of water (reading of second flowmeter) in actual production
Later, just do not have to have adjusted again.It is typically rich that selected water pump, which is contributed, in engineering design, increases certain output flow to original
There is forced circulation system that can't have much impact.
When declining communicating pipe access stove tail Natural Circulation down-comer, it should be ensured that the flow direction of water is consistent as possible in two pipes.
For preventing when failure, recirculated water flows backward to fire door forced circulation down-comer to first check-valve in back-end ductwork circulating line；Second
Check-valves breaks down or needs replacing the first non-return for preventing recirculated water in pipeline from flowing backward to drum, when declining communicating pipe
When valve, the first and second shut-off valves can be closed.
Claims (4)
1. a kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue, including drum, fire door tedge, stove tail
Tedge, fire door forced circulation down-comer, stove tail Natural Circulation down-comer, the both ends of fire door tedge respectively with drum and fire door
It is connected at the top of section flue, the both ends of stove tail tedge are connected at the top of drum and back-end ductwork respectively, fire door forced circulation
The both ends of down-comer are connected with drum and fire door section stack base respectively, the both ends of stove tail Natural Circulation down-comer respectively with vapour
Packet is connected with back-end ductwork bottom, which is characterized in that between fire door forced circulation down-comer and stove tail Natural Circulation down-comer
Equipped with decline communicating pipe.
2. a kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue according to claim 1, special
Sign is, is equipped with along liquid flow path direction the first shut-off valve, first flowmeter, first check-valve and the in the decline communicating pipe successively
Two shut-off valves.
3. a kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue according to claim 2, special
Sign is that the fire door forced circulation down-comer is equipped with water circulating pump and second flowmeter.
4. a kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue according to claim 3, special
Sign is that the stove tail Natural Circulation down-comer is equipped with second check-valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589454.2U CN207632834U (en) | 2017-11-23 | 2017-11-23 | A kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589454.2U CN207632834U (en) | 2017-11-23 | 2017-11-23 | A kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207632834U true CN207632834U (en) | 2018-07-20 |
Family
ID=62857936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721589454.2U Active CN207632834U (en) | 2017-11-23 | 2017-11-23 | A kind of mixture circulatory system suitable for medium-and-large-sized converter Natural Circulation flue |
Country Status (1)
| Country | Link |
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| CN (1) | CN207632834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112680560A (en) * | 2020-12-08 | 2021-04-20 | 苏州海陆重工股份有限公司 | Waste heat boiler in converter dry dedusting system |
| CN115094183A (en) * | 2022-06-28 | 2022-09-23 | 柳州钢铁股份有限公司 | Converter end smoke hood half-pipe forced circulation device, system and method |
-
2017
- 2017-11-23 CN CN201721589454.2U patent/CN207632834U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112680560A (en) * | 2020-12-08 | 2021-04-20 | 苏州海陆重工股份有限公司 | Waste heat boiler in converter dry dedusting system |
| CN112680560B (en) * | 2020-12-08 | 2022-04-15 | 苏州海陆重工股份有限公司 | Waste heat boiler in converter dry dedusting system |
| CN115094183A (en) * | 2022-06-28 | 2022-09-23 | 柳州钢铁股份有限公司 | Converter end smoke hood half-pipe forced circulation device, system and method |
| CN115094183B (en) * | 2022-06-28 | 2023-10-13 | 柳州钢铁股份有限公司 | Forced circulation device, system and method for converter end section fume hood half pipe |
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