CN201945395U - Thermocouple for blast-furnace hot blast stove - Google Patents
Thermocouple for blast-furnace hot blast stove Download PDFInfo
- Publication number
- CN201945395U CN201945395U CN2011200427437U CN201120042743U CN201945395U CN 201945395 U CN201945395 U CN 201945395U CN 2011200427437 U CN2011200427437 U CN 2011200427437U CN 201120042743 U CN201120042743 U CN 201120042743U CN 201945395 U CN201945395 U CN 201945395U
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- China
- Prior art keywords
- thermocouple
- hot blast
- thermopair
- blast
- protection tube
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Abstract
The utility model discloses a thermocouple for a blast-furnace hot blast stove, which comprises a thermocouple. The thermocouple is provided with couple wires. An inner protecting tube is arranged outside the couple wires and an outer protecting tube is arranged outside the inner protecting tube. Fine ceramic powders are filled between the inner protecting tube and the outer protecting tube. A reverse blow device is arranged at the lower portion of the thermocouple. The thermocouple for the blast-furnace hot blast stove has the advantages that the thermocouple has novel structure, large temperature measurement range, high pressure bearing, high temperature measurement accuracy and long service life, is anti-air flow washout and the like. Because the reverse blow device is arranged at the lower portion of the thermocouple, when the protection of the thermocouple breaks caused by the abnormal production of a blast furnace, the reverse blow device can realize safe production by the fact that the reverse blow device utilizes the compressed nitrogen provided by a oxygen making plant to press the blowout of the hot blast gas in the hot blast stove. The thermocouple for the blast-furnace hot blast stove not only guarantees the using safety of the device, but also reduces production cost and obtains remarkable economic benefit.
Description
Technical field
The utility model relates to blast-furnace hot-air furnace apparatus field, specifically is a kind of blast funnace hot blast stove thermopair.
Background technology
In steel industry was produced, heat generator was mainly used in hot blast to smelting process is provided, and the long-time running of vault temperature thermocouple is in 1200～1250 ℃ of high temperature, and maximum operation (service) temperature can reach 1280 ℃, and has than strong vibration in the air-supply process.Because the employed ature of coal difference of each enterprise, the coal gas cleanliness factor of production is also different, and often there are compounds such as sulphur, phosphorus in heat generator in combustion process, require thermocouple protective casing can high temperature resistant airflow scouring, abrasion of particles and high-temperature gas corrosion.Traditional thermocouple protective casing such as diamond spar, molybdenum disilicide, common silit etc. are owing to the reason of the porosity, elevated temperature strength, high-temperature brittleness causes protective casing brittle failure, thermo wires to pollute, corrode easily; cause thermopair shorter serviceable life, do not have the reliable cycle of operation.
Summary of the invention
The purpose of this utility model is to provide a kind of blast funnace hot blast stove thermopair; it can solve the deficiency that exists in the known technology, by two protection tubes are set, improves the serviceability temperature of thermopair; and have back-blowing device, can guarantee of the present utility model safe in utilization.
The utility model for achieving the above object; be achieved through the following technical solutions: a kind of blast funnace hot blast stove thermopair; comprise thermopair; the galvanic couple silk is set on the thermopair; interior protection tube is set outside the galvanic couple silk; interior protection tube is provided with outer protection tube outward, interior protection tube and outside fill ceramic between the protection tube, inverse blowing device is equipped with in the bottom of thermopair.
Described outer protection tube surface is provided with the metal-ceramic coating.
Described metal-ceramic coating thickness is 0.5～1.2mm.
Mounting flange and the protective cover on the thermopair told, ring flange is fixedlyed connected with outer protection tube, and the lead-in wire of galvanic couple silk passes ring flange, and a side of ring flange is installed protective cover.
The beneficial effects of the utility model are: have novel structure, temperature-measuring range is big, the pressure-bearing height, and anti-air flow is washed away, temperature measurement accuracy height, advantages such as long service life.Inverse blowing device is equipped with in bottom at thermopair, and when blast furnace caused thermocouple protection fracture to occur because of production is undesired, the compressed nitrogen that blowing device will utilize oxygen installation to provide was pushed down the ejection of hot blast gas in the stove, and realization is kept the safety in production; The utility model has not only guaranteed the safe in utilization of device, and has reduced production cost, remarkable in economical benefits.Be applicable to the temperature survey at positions such as the vault hot-air mouth continuous coverage of blast furnace, heat generator or warm-air pipe, also can be used for the temperature survey of kilns such as rock gas, coal, cement.
Description of drawings
Accompanying drawing is a main TV structure synoptic diagram of the present utility model.
Label shown in the figure: 1, interior protection tube; 2, outer protection tube; 3, ring flange; 4, protective cover; 5, binding post; 6, lead-in wire; 7, galvanic couple silk.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Scheme 1: a kind of blast funnace hot blast stove thermopair, comprise thermopair, galvanic couple silk 7 is set on the thermopair, protection tube 1 in outside galvanic couple silk 7, being provided with, interior protection tube 1 material is diamond spar, molybdenum disilicide or common silit preferably.Protection tube 2 outside outside interior protection tube 1, being provided with, outer protection tube 2 is heat-resisting alloy steel preferably, interior protection tube 1 and outside fill ceramic between the protection tube 2, inverse blowing device 8 is equipped with in the bottom of thermopair.Ceramic can reduce the vibration in the use, and then improves the thermopair life-span.This scheme be suitable for coal gas do not contain phosphide situation under.Inverse blowing device can be at blast furnace because producing the undesired thermocouple protection that causes occurs in the fracture, and the compressed nitrogen that blowing device will utilize oxygen installation to provide is pushed down the ejection of hot blast gas in the stove, realizes safety in production.
Scheme 2: in the scheme 1, further, there is the metal-ceramic coating on this outer protection tube surface.This coating can strengthen its wear-resisting, corrosion resisting property, further improves the thermopair life-span.
Scheme 3: in the scheme 2, further, this metal-ceramic coating thickness is 0.5～1.2mm.Test shows that the coating of this thickness is fit to processing and handles when strengthening thermopair intensity.
Scheme 4: a kind of blast funnace hot blast stove thermopair, thermo wires have the interior protection tube of diamond spar, molybdenum disilicide or common silit outward, and this protective sleeve also has the outer protection tube of SiC outward, fill the ceramic of high thermal conductivity between this inside and outside sleeve pipe.Can improve the thermopair life-span like this.This scheme be suitable for coal gas contain phosphide situation under.
Scheme 5: in the scheme 1 or 4, further, and mounting flange 3 and protective cover 4 on thermopair,, outer protection tube and ring flange are affixed, and protective cover is fixed in the opposite side of ring flange.If inside and outside protection tube breaks, protective cover can prevent that high temperature gas flow from spraying from ring flange.
By on-the-spot actual the use, compare with conventional thermopair, the design has high temperature resistant, and temperature-measuring range is big, the pressure-bearing height, anti-air flow is washed away, temperature measurement accuracy height, advantages such as long service life.Not only guarantee the safety in production of device, and can reduce production costs remarkable in economical benefits.Be applicable to the temperature survey at positions such as the vault hot-air mouth continuous coverage of blast furnace, heat generator or warm-air pipe, also can be used for the temperature survey of kilns such as rock gas, coal, cement.In the practice, the design's product uses on relevant user's heat generator vault and reaches more than half a year.
Described inverse blowing device can be a blowback fan etc., because producing the undesired thermocouple protection that causes occurs in the fracture, the compressed nitrogen that blowing device will utilize oxygen installation to provide is pushed down the ejection of hot blast gas in the stove, realizes safety in production at blast furnace for it.
Claims (4)
1. blast funnace hot blast stove thermopair; it is characterized in that: comprise thermopair; galvanic couple silk (7) is set on the thermopair; interior protection tube (1) is set outside galvanic couple silk (7); the outer outer protection tube (2) that is provided with of interior protection tube (1); interior protection tube (1) and outside fill ceramic between the protection tube (2), inverse blowing device (8) is equipped with in the bottom of thermopair.
2. a kind of blast funnace hot blast stove thermopair according to claim 1 is characterized in that: outer protection tube (2) surface is provided with the metal-ceramic coating.
3. a kind of blast funnace hot blast stove thermopair according to claim 2 is characterized in that: described metal-ceramic coating thickness is 0.5～1.2mm.
4. a kind of blast funnace hot blast stove thermopair according to claim 1; it is characterized in that: mounting flange on the thermopair (3) and protective cover (4); ring flange (3) is fixedlyed connected with outer protection tube (2); the lead-in wire of galvanic couple silk (7) passes ring flange (3), and a side of ring flange (3) is installed protective cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200427437U CN201945395U (en) | 2011-02-21 | 2011-02-21 | Thermocouple for blast-furnace hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200427437U CN201945395U (en) | 2011-02-21 | 2011-02-21 | Thermocouple for blast-furnace hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945395U true CN201945395U (en) | 2011-08-24 |
Family
ID=44472734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200427437U Expired - Fee Related CN201945395U (en) | 2011-02-21 | 2011-02-21 | Thermocouple for blast-furnace hot blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945395U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307755A (en) * | 2013-05-31 | 2013-09-18 | 中国一冶集团有限公司 | Device and method for installing thermocouple at stove top of hot blast stove |
| CN104330179A (en) * | 2014-10-17 | 2015-02-04 | 莱芜钢铁集团电子有限公司 | Hot blast stove vault temperature measurement device |
| CN108917953A (en) * | 2018-09-20 | 2018-11-30 | 天津德尔泰热控系统有限公司 | A kind of thermal resistor protection device |
| TWI720434B (en) * | 2019-03-12 | 2021-03-01 | 陳俊年 | Ultra-high temperature resistant thermocouple structure |
-
2011
- 2011-02-21 CN CN2011200427437U patent/CN201945395U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307755A (en) * | 2013-05-31 | 2013-09-18 | 中国一冶集团有限公司 | Device and method for installing thermocouple at stove top of hot blast stove |
| CN103307755B (en) * | 2013-05-31 | 2015-10-28 | 中国一冶集团有限公司 | Air heating furnace roof the installation of TC device and method |
| CN104330179A (en) * | 2014-10-17 | 2015-02-04 | 莱芜钢铁集团电子有限公司 | Hot blast stove vault temperature measurement device |
| CN108917953A (en) * | 2018-09-20 | 2018-11-30 | 天津德尔泰热控系统有限公司 | A kind of thermal resistor protection device |
| TWI720434B (en) * | 2019-03-12 | 2021-03-01 | 陳俊年 | Ultra-high temperature resistant thermocouple structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20140221 |