CN201107126Y - Modified type thermo-electric couple for hot-air stove - Google Patents
Modified type thermo-electric couple for hot-air stove Download PDFInfo
- Publication number
- CN201107126Y CN201107126Y CNU2007201824184U CN200720182418U CN201107126Y CN 201107126 Y CN201107126 Y CN 201107126Y CN U2007201824184 U CNU2007201824184 U CN U2007201824184U CN 200720182418 U CN200720182418 U CN 200720182418U CN 201107126 Y CN201107126 Y CN 201107126Y
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- CN
- China
- Prior art keywords
- thermopair
- ceramic pipe
- metal wire
- thermoelectric metal
- sealing
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- 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 - Lifetime
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Abstract
The utility model relates to an improved thermocouple used for a hot-blast stove, and the thermocouple comprises a ceramic tube and a protector tube, wherein, a plurality of thermoelectric metal wires are arranged in the ceramic tube. The rear sealing part of the thermocouple is provided with a sealing device; the sealing device comprises a gas-tight device, an O-shaped packing ring and a fixing ring; the gas-tight device is arranged into the rear end of the protector tube and is fixed on the tube wall of the thermoelectric metal wire external layer through a wiped joint; the O-shaped packing ring is sleeved on the gas-tight device; the fixing ring is fixedly arranged outside the gas-tight device and the O-shaped packing ring. A temperature measuring part at the head of the thermocouple is provided with a sealing end and a ceramic tube template; the sealing end is arranged at the front end of the ceramic tube; the ceramic tube template is fixedly arranged in the front end of the ceramic tube and in grooves among the thermoelectric metal wires. The improved thermocouple used for the hot-blast stove has the advantages of long service life, stable test, and high safety performance, thereby improving the quality reliability of the sealing part and prolonging the service life.
Description
Technical field
The utility model relates to thermopair, the modified thermopair that particularly a kind of heat generator is used.
Background technology
In blast furnace, smelt iron, need when dropping into coke stone heat air delivery below blast furnace by reducing iron ore.Be provided with heat generator in order to obtain high temperature air, use thermopair that the temperature of burner hearth, connecting pipe and air-supply is measured.Because the thermometric place has high temperature, high pressure, high flow rate, therefore require long service life, stable testing and safe thermopair.
Referring to Fig. 1, protection tube 1,2 is equipped with in existing thermopair product outside, in order to prevent the silicide ejection in the protection tube, is necessary to carry out in advance acidification, and this has just caused the product acidifying.The hermetic unit 5 of existing product closely can not make the thermoelectric metal wire 4 of thermopair be polluted and rupture.Be arranged on thermoelectric metal wires 4 in the ceramic pipe 3 because the influence of the corrosion thing that is subjected to accumulating in the protecting tube, thermoelectric metal wire 4 is polluted and rupture.Also have, thermopair that expansion coefficient is different and ceramic pipe repeat to expand with heat and contract with cold under the lifting of temperature, this cold and hot difference increases load can for thermoelectric metal wire, causes thermoelectric metal wire 4 to rupture easily at the point for measuring temperature of thermometric portion 6 and the joint portion at ceramic pipe 3 edges.
The utility model content
Task of the present utility model provides a kind of heat generator modified thermopair, the hermetic unit that it has solved existing thermopair is not tight, the interior thermoelectric metal wire of ceramic pipe is polluted and is ruptured, and thermoelectric metal wire causes the problem in the easy fracture in the joint portion at thermometric portion and ceramic pipe edge because of expanding with heat and contract with cold.
Technical solution of the present utility model is as follows:
A kind of heat generator modified thermopair, it is equipped with ceramic pipe and protection tube, and thermoelectric metal wire is set in ceramic pipe, and the rear portion of thermopair is provided with hermetic unit, and the head of thermopair is a thermometric portion;
The hermetic unit at described thermopair rear portion is equipped with packoff, the sealing device comprises gas check, O type sealing ring and fixing lasso, the gas check protection tube rearward end of packing into, and be fixed on the outer field tube wall of thermoelectric metal wire by pad, O type seal ring set is contained on the gas check, and fixedly lasso then is fixedly mounted on the outside of gas check and O type sealing ring;
End socket and ceramic pipe template are equipped with in the thermometric portion of described thermopair head, end socket is loaded on the ceramic pipe leading section, the ceramic pipe template then be fixedly mounted in the ceramic pipe front end and thermoelectric metal wire between groove in, instant heating electric metal line is wrapped in the interior groove of ceramic pipe front end, and the ceramic pipe template is fixedly mounted on again in this groove to clamp thermoelectric metal wire and the ceramic pore of sealing.
The utility model improves existing thermopair, has life-span length, stable testing, safe advantage, and concrete characteristics are as follows:
1, the protecting tube after improving is compared with existing product, and protection tube does not almost have pore, and there is the fine and closely woven acidifying diaphragm of one deck on the protection tube surface, therefore is difficult to be subjected to acidifying, and silicon content is few in the protection tube, and silicide is not easy ejection.
2, the product hermetic unit used fluid sealant originally, because fastening intensity difference causes the reliable in quality degree also different.The utility model makes the reliable in quality degree at sealing position improve widely by adopting gas check and O type sealing ring.
3, the thermoelectric metal wire with thermometric portion is wrapped in the ceramic pipe, it is not exposed and is closed.
4, by the welding processing to the point for measuring temperature of thermocouple temperature measurement portion, it is indeformable that it is guaranteed at work, not only guaranteed the quality of thermopair but also prolonged its serviceable life.
Description of drawings
Fig. 1 is the structural representation of existing a kind of thermopair product.
Fig. 2 is the schematic diagram of sealing device of a kind of heat generator of the present utility model with the modified thermopair.
Fig. 3 is the decomposition texture synoptic diagram of Fig. 2 thermopair packoff.
Fig. 4 is the end enclosure structure synoptic diagram of a kind of heat generator of the present utility model with the thermometric portion of modified thermopair.
Fig. 5 is the ceramic pipe formwork structure synoptic diagram of Fig. 4 thermocouple temperature measurement portion.
Fig. 6 is the left TV structure synoptic diagram by ceramic pipe template shown in Figure 5.
Embodiment
Referring to Fig. 1, a kind of heat generator thermopair, it is equipped with ceramic pipe 3 and protection tube 1,2, and thermoelectric metal wire 4 is set in ceramic pipe 3, and the rear portion of thermopair is provided with hermetic unit 5, and the head of thermopair is a thermometric portion 6.
Referring to Fig. 2 and Fig. 3, the utility model is a kind of heat generator modified thermopair, and the hermetic unit 5 at thermopair rear portion is equipped with packoff 7, and sealing device 7 comprises gas check 8, O type sealing ring 9 and fixing lasso 10.The gas check 8 protection tube rearward end of packing into, and be fixed on the thermoelectric metal wire 4 outer field tube walls 12 by pad 11.O type sealing ring 9 is sleeved on the gas check 8, and fixedly 10 of lassos are fixedly mounted on the outside of gas check 8 and O type sealing ring 9.This just makes the sealing reliability of hermetic unit 5 be significantly improved.On the circle wall of fixing lasso 10, be provided with through hole, in through hole, be equipped with and tighten up the fixedly hold-down nut 13 of lasso 10 and protection tube.
Referring to Fig. 4, the thermometric portion 6 installing end sockets 14 of thermopair head, end socket 14 is loaded on ceramic pipe 3 leading sections, built-in thermoelectric metal wire 4.At thermometric portion 6 installing end sockets 14, can make the thermoelectric metal wire 4 that is positioned at thermometric portion be closed in ceramic pipe 3.
Referring to Fig. 5 and Fig. 6, the thermometric portion 6 of thermopair head also installs ceramic pipe template 15, ceramic pipe template 15 be fixedly mounted in ceramic pipe 3 front ends and thermoelectric metal wire 4 between groove in.That is to say, thermoelectric metal wire 4 is wrapped in the interior groove of ceramic pipe 3 front ends, ceramic pipe template 15 is fixedly mounted in this groove, weld fixing again, to realize clamping thermoelectric metal wire 4 and sealing ceramic pipe 3 pores, prolonged the serviceable life and the thermometric quality of thermocouple temperature measurement portion 6 like this.
Protection tube in the thermopair of the present utility model surface is owing to applied one deck acidifying diaphragm, so protection tube can not be subjected to acidifying.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the utility model, and be not with opposing qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claim conversion, the modification of the foregoing description.
Claims (3)
1. heat generator modified thermopair, it is equipped with ceramic pipe and protection tube, and thermoelectric metal wire is set in ceramic pipe, and the rear portion of thermopair is provided with hermetic unit, and the head of thermopair is a thermometric portion, it is characterized in that,
The hermetic unit at described thermopair rear portion is equipped with packoff, the sealing device comprises gas check, O type sealing ring and fixing lasso, the gas check protection tube rearward end of packing into, and be fixed on the outer field tube wall of thermoelectric metal wire by pad, O type seal ring set is contained on the gas check, and fixedly lasso then is fixedly mounted on the outside of gas check and O type sealing ring;
End socket and ceramic pipe template are equipped with in the thermometric portion of described thermopair head, end socket is loaded on the ceramic pipe leading section, the ceramic pipe template then be fixedly mounted in the ceramic pipe front end and thermoelectric metal wire between groove in, instant heating electric metal line is wrapped in the interior groove of ceramic pipe front end, and the ceramic pipe template is fixedly mounted on again in this groove to clamp thermoelectric metal wire and the ceramic pore of sealing.
2. heat generator modified thermopair according to claim 1 is characterized in that the circle wall of described fixedly lasso is provided with through hole, is equipped with to tighten up the fixedly hold-down nut of lasso and protection tube in through hole.
3. heat generator modified thermopair according to claim 1 is characterized in that, described protection tube surface-coated one deck acidifying diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201824184U CN201107126Y (en) | 2007-09-20 | 2007-09-20 | Modified type thermo-electric couple for hot-air stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201824184U CN201107126Y (en) | 2007-09-20 | 2007-09-20 | Modified type thermo-electric couple for hot-air stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201107126Y true CN201107126Y (en) | 2008-08-27 |
Family
ID=39958933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201824184U Expired - Lifetime CN201107126Y (en) | 2007-09-20 | 2007-09-20 | Modified type thermo-electric couple for hot-air stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201107126Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411600A (en) * | 2019-08-28 | 2019-11-05 | 清河县华源精密仪表厂 | A kind of profile thermocouple |
-
2007
- 2007-09-20 CN CNU2007201824184U patent/CN201107126Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411600A (en) * | 2019-08-28 | 2019-11-05 | 清河县华源精密仪表厂 | A kind of profile thermocouple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080827 |
|
| CX01 | Expiry of patent term |