CN201817532U - Gas heat exchanger in heating furnace of steel rolling system - Google Patents
Gas heat exchanger in heating furnace of steel rolling system Download PDFInfo
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- CN201817532U CN201817532U CN2010205810407U CN201020581040U CN201817532U CN 201817532 U CN201817532 U CN 201817532U CN 2010205810407 U CN2010205810407 U CN 2010205810407U CN 201020581040 U CN201020581040 U CN 201020581040U CN 201817532 U CN201817532 U CN 201817532U
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- gas
- flue
- heat exchanger
- air cooling
- gas heat
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Abstract
The utility model relates to a gas heat exchanger in a heating furnace of steel rolling system, which consists of a gas preheater, a flue arranged in front of the gas preheater, and a temperature gauge on the flue, wherein the top of the flue is processed with a through hole which is internally inserted with an air cooling pipe that is connected with an air cooling header pipe; the air cooling header pipe is provided with a flow meter and an adjusting valve I; and the air cooling pipe is provided with an adjusting valve II. The gas heat exchanger is added with the air cooling pipe and is mixed with flue gas, thus reducing the temperature of the discharged flue gas and overcoming the defect that cold air flow can not reach the wide middle area of a flue gas discharge channel since a pipe bundle is arranged at the side. By adopting the way of mixing cold air when the flue gas is discharged, the gas heat exchanger effectively solves the problem of overtemperature protection of the gas preheater.
Description
Technical field
The utility model relates to the rolling system process furnace, specifically belongs to the gas change heater in the rolling system process furnace.
Background technology
Steel rolling process is an important power consumption link in the Iron and Steel Production, and reducing the steel rolling process energy consumption is to realize the energy-conservation important content of Iron And Steel Industry.In the steel rolling process energy consumption, blank heating accounts for 70%, therefore by improving thermo-efficiency, to reduce the process furnace fuel consumption, reduces environmental pollution and has very important economic and social benefit.For this reason, in the heater for rolling steel heat recovery, air preheater and gas preheating device have been set up.Aborning, because the long-range flow less than the discharging flue gas of the flow of coal gas, so the coal gas temperature rise is greater than the temperature drop of discharging flue gas.When the production line fault, gas using quantity sharply reduces, and the reduction of discharging flue-gas temperature lags behind the reduction of gas flow, and gas preheating will bear the risk of overtemperature.The main harm of overtemperature: hydrocarbons decompose in the combustiblecomponents, cause the inner tubal wall deposition of carbon at heat exchanger tube, cause wall resistance to strengthen, long-time running may cause that the outside temperature difference strengthens in the pipe, because of the overtemperature equipment breakdown of causing danger, the breakage of Tube Sheet of Heat Exchanger group, cause gas leak, cause the localized hyperthermia district in the flue burning, perhaps blast damage equipment.
The utility model content
The purpose of this utility model is to solve gas preheating organ pipe group overtemperature prote problem, provides a kind of hydrocarbons decompose that can prevent to cause the gas change heater in carbon laydown and the damaged rolling system process furnace that leaks of pipeline overtemperature.
The technical measures that address the above problem:
Gas change heater in the heater for rolling steel, gas change heater in the heater for rolling steel is made up of the flue before gas preheating device, the gas preheating device, the thermometer on the flue, it is characterized in that: be processed with through hole at the flue top, in through hole, be inserted with forced air cooled tube, forced air cooled tube and air-cooled total pipe coupling; Rate of flow meter, variable valve one are housed on air-cooled house steward; Dress variable valve two on forced air cooled tube.
The utility model is owing to take to set up cold-air duct, and therefore the blending flue gas can reduce the discharging flue-gas temperature, makes the unlikely high temperature that bears of gas preheating organ pipe group; Owing to the utility model is chosen in the preceding cold-air duct of installing of the preceding comb of interchanger, cold wind is blown downwards from discharging gas flue top, like this according to the automatic principle that floats of flue gas, the abundant convection current of cold wind and flue gas, cold wind is strong to the disturbance of discharging flue gas; Along discharging gas flue width, promptly along the front-seat tube side of interchanger to, come flow path direction perpendicular to the discharging flue gas, arrange cold-air duct, overcome and arranged that from the side tube bank cold wind air-flow can not arrive at the shortcoming of discharging gas flue width central region.Mode by the discharging flue gas is mixed cold wind has effectively solved gas preheating device overtemperature prote problem.
Description of drawings
Fig. 1 is the structural representation of the gas change heater in the heater for rolling steel
Fig. 2 is the plan structure synoptic diagram of flue among Fig. 1.
Embodiment
Be described further below in conjunction with accompanying drawing:
Gas change heater in the heater for rolling steel is made up of the flue 2 before gas preheating device 1, the gas preheating device 1, the thermometer 3 on the flue 2.It evenly processes 3 diameters at flue 2 tops is that 500 millimeters through holes 4 or 12 diameters are that 300 millimeters through holes 4 or 24 diameters are 100 millimeters through holes 4, insert in each through hole 4 and the fixing forced air cooled tube 5 that cooperates with through hole 4 diameters, forced air cooled tube 5 adopts welding or flange to be connected and fixed with air-cooled house steward 6; Dress rate of flow meter 7 and variable valve 1 on air-cooled house steward 6; Dress variable valve 29 on forced air cooled tube 5.
According to the principle that flue gas floats automatically, the cold wind in the forced air cooled tube 5 produce strong disturbance and carry out sufficient heat exchange the discharging flue gases in the flue 2, gas preheating device 1 temperature is reduced, and remain in the set(ting)value.
Claims (1)
1. the gas change heater in the heater for rolling steel is made up of the flue before gas preheating device, the gas preheating device, the thermometer on the flue, it is characterized in that: be processed with through hole at the flue top, be inserted with forced air cooled tube in through hole, forced air cooled tube and air-cooled total pipe coupling; Rate of flow meter, variable valve one are housed on air-cooled house steward; Dress variable valve two on forced air cooled tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205810407U CN201817532U (en) | 2010-10-28 | 2010-10-28 | Gas heat exchanger in heating furnace of steel rolling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205810407U CN201817532U (en) | 2010-10-28 | 2010-10-28 | Gas heat exchanger in heating furnace of steel rolling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201817532U true CN201817532U (en) | 2011-05-04 |
Family
ID=43915495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205810407U Expired - Fee Related CN201817532U (en) | 2010-10-28 | 2010-10-28 | Gas heat exchanger in heating furnace of steel rolling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201817532U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335529A (en) * | 2013-06-18 | 2013-10-02 | 长兴三重窑炉科技有限公司 | Smoke exhaust system for double-chamber type heating furnace |
| CN104949517A (en) * | 2015-06-19 | 2015-09-30 | 邯钢集团邯宝钢铁有限公司 | Rapid cooling method for steel rolling heating furnace heat exchanger |
| CN112097534A (en) * | 2020-09-15 | 2020-12-18 | 法孚斯坦因冶金技术（上海）有限公司 | Digital single heat accumulating type heating furnace |
-
2010
- 2010-10-28 CN CN2010205810407U patent/CN201817532U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335529A (en) * | 2013-06-18 | 2013-10-02 | 长兴三重窑炉科技有限公司 | Smoke exhaust system for double-chamber type heating furnace |
| CN104949517A (en) * | 2015-06-19 | 2015-09-30 | 邯钢集团邯宝钢铁有限公司 | Rapid cooling method for steel rolling heating furnace heat exchanger |
| CN112097534A (en) * | 2020-09-15 | 2020-12-18 | 法孚斯坦因冶金技术（上海）有限公司 | Digital single heat accumulating type heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20171028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |