CN2932341Y - Cracking oven COT thermocouple anti-scouring sleeve - Google Patents
Cracking oven COT thermocouple anti-scouring sleeve Download PDFInfo
- Publication number
- CN2932341Y CN2932341Y CN200620108784.0U CN200620108784U CN2932341Y CN 2932341 Y CN2932341 Y CN 2932341Y CN 200620108784 U CN200620108784 U CN 200620108784U CN 2932341 Y CN2932341 Y CN 2932341Y
- Authority
- CN
- China
- Prior art keywords
- cot
- protection tube
- armoured thermocouple
- tube
- measuring junction
- 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.)
- Ceased
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a cracking furnace COT scour resistance thermowell comprising a cracking furnace tube, a measuring junction, a protector tube, a flange, a shielded thermocouple, an upper protector tube and a joint box, wherein the shielded thermocouple is inserted into a special measuring junction, the shielded thermocouple is wrapped with a protector tube, the insulating fiber-cotton is positioned between the protector tube and the shielded thermocouple. The utility has the advantages of improvement of accuracy of COT measurement and fulfillment of the requirement of field scour resistance, abrasion resistance and scour resistance, and is suitable for temperature measurement of large-scale ethylene device.
Description
Technical field
The utility model belongs to a kind of instrument of measuring pyrolysis furnace radiating furnace tube outlet temperature.
Background technology
Pyrolysis furnace radiant-type furnace outlet thermometric, it is can the rapid reaction electromotive force that thermopair is required, accurate thermometric again, and measuring junction requires wear-resisting, and existing instrument method for making can reach anti-wear performance for increasing casing thickness, but the sleeve pipe thickening can cause thermopair sensitivity to reduce, can only reach an effect antiscour so strengthen casing thickness, it is accurate to reach thermometric, causes actual and the measuring error can be very big.
Summary of the invention
The purpose of this utility model just provides a kind of accurately measure CO T outlet temperature can reach the pyrolysis furnace COT thermopair antiscour sleeve pipe of COT to thermopair high temperature, wear-resisting, antiscour requirement again.
For achieving the above object; technical solution adopted in the utility model is: a kind of pyrolysis furnace COT thermopair antiscour sleeve pipe; be to form by cracking furnace tube, special shape measuring junction, protection tube, flange, armoured thermocouple, last protection tube and terminal box assembling; armoured thermocouple inserts in the special formula measuring junction; armoured thermocouple is surrounded by protection tube outward, also is provided with heat insulation cellucotton between protection tube and the armoured thermocouple.
Compared with prior art, the utlity model has and improve the accurate precision of measure CO T, can reach the requirement of on-the-spot antiscour, wear-resisting, antiscour again, can be used in the large-scale ethylene plant.
Description of drawings
Fig. 1 is a side cutaway view of the present utility model.
Fig. 2 is a structural representation of the present utility model.
Embodiment
Fig. 1, pyrolysis furnace COT thermopair antiscour sleeve pipe shown in Figure 2; be to assemble by cracking furnace tube 1, special shape measuring junction 2, protection tube 3, flange 6, armoured thermocouple 5, last protection tube 7 and terminal box 8; armoured thermocouple 5 inserts in the special formula measuring junction 2; be surrounded by protection tube 3 outside the armoured thermocouple 5, also be provided with heat insulation cellucotton 4 between protection tube 3 and the armoured thermocouple 5.Special shape measuring junction 2 and the welding of protection pipe are filled in heat insulation cellucotton in the protection tube 3, then with 6 welding of process joint flange; last protection tube 7 and spheroidal graphite terminal box 8 are threaded; armoured thermocouple 5 is contained in the spheroidal graphite terminal box 8, makes in the armoured thermocouple 5, carry out accurate thermometric.Sleeve pipe at high temperature uses, and there is heat insulation cellucotton insulation the sleeve pipe the inside, reduces thermal source and looses outward, guarantee temperature measurement accuracy, and design has air hole on flange, and when gases are heated, they expand, to the sleeve pipe build-up of pressure, air hole arranged, and gas is ejected, and makes sleeve pipe not be subjected to interior pressure.
Claims (1)
1, a kind of pyrolysis furnace COT thermopair antiscour sleeve pipe; it is made up of measuring junction (2), protection tube (3), flange (6), armoured thermocouple (5), last protection tube (7) and terminal box (8); it is characterized in that described armoured thermocouple (5) inserts in the measuring junction (2); armoured thermocouple (5) is outer to be surrounded by protection tube (3), also is provided with heat insulation cellucotton (4) between protection tube (3) and the armoured thermocouple (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620108784.0U CN2932341Y (en) | 2006-10-17 | 2006-10-17 | Cracking oven COT thermocouple anti-scouring sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620108784.0U CN2932341Y (en) | 2006-10-17 | 2006-10-17 | Cracking oven COT thermocouple anti-scouring sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2932341Y true CN2932341Y (en) | 2007-08-08 |
Family
ID=38348839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620108784.0U Ceased CN2932341Y (en) | 2006-10-17 | 2006-10-17 | Cracking oven COT thermocouple anti-scouring sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2932341Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507032A (en) * | 2011-11-04 | 2012-06-20 | 吴方立 | COT thermocouple for cracking furnace |
| CN103278256A (en) * | 2013-03-22 | 2013-09-04 | 吴方立 | Cracking furnace cot thermocouple and mounting method thereof |
| CN115717944A (en) * | 2020-12-10 | 2023-02-28 | 淄博益源工程技术有限公司 | Direct temperature measuring type COT surface thermocouple |
-
2006
- 2006-10-17 CN CN200620108784.0U patent/CN2932341Y/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507032A (en) * | 2011-11-04 | 2012-06-20 | 吴方立 | COT thermocouple for cracking furnace |
| CN102507032B (en) * | 2011-11-04 | 2016-03-30 | 吴方立 | cracking furnace COT thermocouple |
| CN103278256A (en) * | 2013-03-22 | 2013-09-04 | 吴方立 | Cracking furnace cot thermocouple and mounting method thereof |
| CN115717944A (en) * | 2020-12-10 | 2023-02-28 | 淄博益源工程技术有限公司 | Direct temperature measuring type COT surface thermocouple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20090927 Decision number of declaring invalidation: 13934 Granted publication date: 20070808 |