CN202090009U - Thermocouple for hot blast stove - Google Patents
Thermocouple for hot blast stove Download PDFInfo
- Publication number
- CN202090009U CN202090009U CN2011201398643U CN201120139864U CN202090009U CN 202090009 U CN202090009 U CN 202090009U CN 2011201398643 U CN2011201398643 U CN 2011201398643U CN 201120139864 U CN201120139864 U CN 201120139864U CN 202090009 U CN202090009 U CN 202090009U
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- CN
- China
- Prior art keywords
- protective tube
- thermocouple
- thermopair
- sleeve
- thermocouple wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a thermocouple for a hot blast stove, which comprises a thermocouple wire. The thermocouple wire is arranged in a knob insulator serving as an insulation support, the knob insulator is arranged in an inner protecting pipe arranged in an outer protecting pipe, a sleeve is arranged on the back section of the outer protecting pipe, the back end of the sleeve is connected with the front end of a coupling pipe, and the front end of the coupling pipe is provided with a connecting flange matched with an installation seat of the thermocouple of the stove. The back end of the coupling pipe is provided with a pair of sealing flanges, two insulation sealing gaskets are arranged between the two sealing flanges, and an outgoing line of the thermocouple wire is led out from the middle of the two insulation sealing gaskets. The thermocouple for the hot blast stove can prevent high pressure hot blast from flowing out the stove, also can prevent air containing moisture from entering the inner portion of the protecting pipes to be decomposed to produce hydrogen which can corrode the thermocouple wire, reduce poisoning situation of the thermocouple wire, thereby improving instability of detection temperature of the thermocouple, prolonging service life of the thermocouple and reducing temperature detection errors.
Description
Technical field
The utility model relates to a kind of temperature-detecting device, refers to a kind of hotblast stove thermopair particularly.
Background technology
Hotblast stove is the visual plant of blast furnace ironmaking, and it mainly acts on is to the blast furnace heat air delivery, to reduce the ironmaking coking significantly.According to statistics, 100 ℃ of the every raisings of wind-warm syndrome can improve 60～80 ℃ of blast-furnace tuyere domain tyeory temperature of combustion, can reduce blast furnace fuel than 20-30kg/t, can allow many coal injections 15kg/t.The hotblast stove thermopair is a kind of plant and instrument that detects simply, easily and control hot-blast furnace temperature.Because it is hotblast stove in process of production, is in the environment operation down of high temperature (1200-1300 ℃) and thermal pressure (0.6MPa), therefore very strict to the processing requirement of thermopair.
The thermopair that uses is made up of galvanic couple silk, diplopore porcelain bead, protective tube, mounting fixing parts, terminal box at present; this thermopair is mainly by the protective tube sealing; prevent the hot blast leakage; in case protective tube goes wrong; hot blast in the hotblast stove just directly is flushed to the body of heater outside by the terminal box junction; equipment and personnel safety are all caused a hidden trouble, and influence effective detection of thermopair, thereby blast furnace ironmaking can't normally be carried out.Protective tube can reduce the impact of High Temperature High Pressure hot blast to thermopair outside one deck though increase in the single ply protective tube outside again; but outer protective tube and sleeve generally adopt the binding agent bonding; the High Temperature High Pressure that thermopair bears for a long time often makes binding agent come off and forms the slit, causes hot blast to leak from thermopair.
Summary of the invention
The purpose of this utility model is exactly will provide a kind of to be suitable for that blast furnace uses and good sealing effect, long service life, thermometric is stable, error is little hotblast stove thermopair.
For achieving the above object; the hotblast stove thermopair that the utility model is designed; comprise thermocouple wire; described thermocouple wire is installed in the porcelain bead as insulating support; described porcelain bead is arranged in the interior protective tube; protective tube is arranged in the outer protective tube in described; the back segment of described outer protective tube is provided with sleeve; described telescopic rear end links to each other with the front end of transition conduit; the front end of described transition conduit is provided with the mounting flange that is complementary with body of heater thermopair mount pad; the rear end of described transition conduit also is provided with a pair of tongued and grooved flanges; be provided with two insulated enclosure pads between the described a pair of tongued and grooved flanges, the outlet line of described thermocouple wire is drawn from the centre of described two insulated enclosure pads.
Further, be connected with the bonding packing seal between the back segment of described outer protective tube and the sleeve.
Further, described telescopic rear end is adopted with the front end of transition conduit and is threaded.
Again further, described interior protective tube and outer protective tube are corundum quality guarantee pillar, and described sleeve is Ni-based steel pipe.
Advantage of the present utility model is: increased a pair of flange seal with respect to thermopair commonly used at present, be provided with two insulated enclosure pads between the tongued and grooved flanges binding face, the thermocouple wire outlet line is drawn in the middle of two insulated enclosure pads, thereby effectively whole galvanic couple in-core portion and outside is separated.Because tongued and grooved flanges folder is used can be born 1Mpa with interior pressure; and the operating pressure of hotblast stove burner hearth is not more than 0.6Mpa; even the gap appears in the filler that is sealing adhesive between therefore inside and outside protective tube damage or outer protective tube and sleeve; tongued and grooved flanges also can stop high-pressure hot wind along these gaps or outside the destructive protective tube flows out stove; and then can improve the unstable situation of thermopair detected temperatures, temperature measurement error is corresponding to be reduced.Because the extraneous gas that contains water molecules can not enter into protective tube inside; the thermopair air contained water of having avoided prior art enters into protective tube inside by terminal box and decomposes under high-temperature condition and produce the corrosive nature of hydrogen to thermocouple wire; reduced the generation of thermocouple wire poisoning situation; thereby can prolong the work-ing life of thermopair, simultaneously temperature measurement error be reduced.
Description of drawings
Fig. 1 is the main sectional structure synoptic diagram of hotblast stove of the present utility model with thermopair.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Hotblast stove thermopair shown in the figure comprises thermocouple wire 4, and thermocouple wire 4 is installed in the porcelain bead 3 as insulating support, and in the protective tube 2, interior protective tube 2 was arranged in the outer protective tube 1 in porcelain bead 3 was arranged on.Inside and outside protective tube 2,1 is all made of resistant to elevated temperatures corundum.The back segment of outer protective tube 1 also is provided with sleeve 5, and sleeve 5 adopts Ni-based steel pipe manufacturing, and is tightly connected with bonding filler 6 with outer protective tube back segment.The rear end of sleeve 5 is adopted with the front end of transition conduit 11 and is threaded.The front end of transition conduit 11 is provided with the mounting flange 12 that is complementary with body of heater thermopair mount pad 10, be provided with insulated enclosure pad 14 between body of heater thermopair mount pad 10 and the ring flange 12, and body of heater thermopair mount pad 10 fixedlyed connected with ring flange 12 with bolt 13.Transition conduit 11 rear ends also are provided with a pair of tongued and grooved flanges 7, and transition conduit 11 all adopts with ring flange 12 and one of them tongued and grooved flanges 7 and is welded to connect.This is to being provided with two insulated enclosure pads 8 between the tongued and grooved flanges 7, the outlet line of thermocouple wire 4 is drawn from the centre of two insulated enclosure pads 8.This cooperates flange 7 and bolt 9 and compresses two insulating mats 8, comes thereby thermopair inside is isolated from the outside.
When the utility model uses, the thermopair detection segment is placed hotblast stove fully by body of heater thermopair mount pad 10.Because the sealing to folder of the outside a pair of tongued and grooved flanges 7 of hotblast stove can be born 1Mpa with interior pressure; and the operating pressure of hotblast stove burner hearth is not more than 0.6Mpa; even the gap appears in the filler 6 that is sealing adhesive that therefore inside and outside protective tube 2,1 damage or outer protective tube 1 and sleeve are 5; this also can stop high-pressure hot wind along these gaps or outside the destructive protective tube flows out stove to tongued and grooved flanges 7; improved the unstable situation of thermopair detected temperatures, temperature measurement error reduces.Simultaneously; this gas that also can stop the external world to contain water molecules to tongued and grooved flanges 7 enters into protective tube inside; avoid air contained water under high-temperature condition, to decompose and produce the corrosive nature of hydrogen thermocouple wire; reduce the generation of thermocouple wire poisoning situation; thereby can prolong the work-ing life of thermopair, and temperature measurement error is also reduced.
Claims (5)
1. hotblast stove thermopair; comprise thermocouple wire (4); described thermocouple wire (4) is installed in the porcelain bead (3) as insulating support; described porcelain bead (3) is arranged in the interior protective tube (2); protective tube (2) is arranged in the outer protective tube (1) in described; it is characterized in that: the back segment of described outer protective tube (1) is provided with sleeve (5); the rear end of described sleeve (5) links to each other with the front end of transition conduit (11); the front end of described transition conduit (11) is provided with the mounting flange (12) that is complementary with body of heater thermopair mount pad (10); the rear end of described transition conduit (11) also is provided with a pair of tongued and grooved flanges (7); be provided with two insulated enclosure pads (8) between the described a pair of tongued and grooved flanges (7), the outlet line of described thermocouple wire (4) is drawn from the centre of described two insulated enclosure pads (8).
2. hotblast stove thermopair according to claim 1 is characterized in that: be tightly connected with bonding filler (6) between the back segment of described outer protective tube (1) and the sleeve (5).
3. hotblast stove thermopair according to claim 1 and 2 is characterized in that: the rear end of described sleeve (5) is adopted with the front end of transition conduit (11) and is threaded.
4. hotblast stove thermopair according to claim 1 and 2 is characterized in that: protective tube (2) and outer protective tube (1) are corundum quality guarantee pillar in described, and described sleeve (5) is Ni-based steel pipe.
5. hotblast stove thermopair according to claim 3 is characterized in that: protective tube (2) and outer protective tube (1) are corundum quality guarantee pillar in described, and described sleeve (5) is Ni-based steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201398643U CN202090009U (en) | 2011-05-05 | 2011-05-05 | Thermocouple for hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201398643U CN202090009U (en) | 2011-05-05 | 2011-05-05 | Thermocouple for hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090009U true CN202090009U (en) | 2011-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201398643U Expired - Fee Related CN202090009U (en) | 2011-05-05 | 2011-05-05 | Thermocouple for hot blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090009U (en) |
Cited By (7)
| 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 |
| CN105136321A (en) * | 2015-09-11 | 2015-12-09 | 河南省天利工业炉有限公司 | Integrally-brick-plugged type thermocouple of induction heating furnace |
| CN105547504A (en) * | 2015-12-11 | 2016-05-04 | 中国航空工业标准件制造有限责任公司 | Vacuum furnace thermocouple installation leakage-prevention device |
| CN105624353A (en) * | 2016-04-06 | 2016-06-01 | 安徽工业大学 | Thermocouple on-line mounting device for blast furnace temperature measurement |
| CN107269998A (en) * | 2017-07-28 | 2017-10-20 | 中国核动力研究设计院 | Suitable for the insulation and sealing structure of cylinder transmission of electricity structure under high-temperature and high-pressure conditions |
| CN108247984A (en) * | 2017-12-20 | 2018-07-06 | 中国石油天然气股份有限公司吉林石化分公司 | A kind of exhaust anti-overflow device |
| CN109338376A (en) * | 2018-11-20 | 2019-02-15 | 中核核电运行管理有限公司 | A kind of fixed device of novel impressed current anode |
-
2011
- 2011-05-05 CN CN2011201398643U patent/CN202090009U/en not_active Expired - Fee Related
Cited By (8)
| 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 |
| CN105136321A (en) * | 2015-09-11 | 2015-12-09 | 河南省天利工业炉有限公司 | Integrally-brick-plugged type thermocouple of induction heating furnace |
| CN105547504A (en) * | 2015-12-11 | 2016-05-04 | 中国航空工业标准件制造有限责任公司 | Vacuum furnace thermocouple installation leakage-prevention device |
| CN105624353A (en) * | 2016-04-06 | 2016-06-01 | 安徽工业大学 | Thermocouple on-line mounting device for blast furnace temperature measurement |
| CN107269998A (en) * | 2017-07-28 | 2017-10-20 | 中国核动力研究设计院 | Suitable for the insulation and sealing structure of cylinder transmission of electricity structure under high-temperature and high-pressure conditions |
| CN108247984A (en) * | 2017-12-20 | 2018-07-06 | 中国石油天然气股份有限公司吉林石化分公司 | A kind of exhaust anti-overflow device |
| CN109338376A (en) * | 2018-11-20 | 2019-02-15 | 中核核电运行管理有限公司 | A kind of fixed device of novel impressed current anode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Steel Engineering Technology Group Communication Co., Ltd. Assignor: Wuhan Iron & Steel (Group) Corp. Contract record no.: 2014420000065 Denomination of utility model: Hot-air stove electric thermo-couple Granted publication date: 20111228 License type: Exclusive License Record date: 20140508 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20111228 Termination date: 20170505 |