GB2537889A - Thermocouple design for reactors in process plants - Google Patents
Thermocouple design for reactors in process plants Download PDFInfo
- Publication number
- GB2537889A GB2537889A GB1507360.4A GB201507360A GB2537889A GB 2537889 A GB2537889 A GB 2537889A GB 201507360 A GB201507360 A GB 201507360A GB 2537889 A GB2537889 A GB 2537889A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thermocouple
- connection
- reactors
- reactor
- flange
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/023—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples provided with specially adapted connectors
Abstract
An improved connection means between a thermocouple and a reactor used in process, manufacturing or chemical plant operations. The connection system allows for easy access to the thermocouple even during process operation. It comprises a quick opening closure 8 and leakage supervision system made up of o-ring gasket 2, dovetail groove 3, connection tightening and supervision system 5 and inspection hole 6. Also shown are flange and thermocouple connection 1, thermocouple connection piece 10 and thermocouple 11.
Description
THERMOCOUPLE DESIGN FOR REACTORS IN PROCESS PLANTS
FIELD OF THE INVENTION
(001) The invention relates to thermocouple design for reactors used in process plants.
BACKGROUND OF THE INVENTION
(2) It is generally necessary to measure the temperature of reactors used in process, manufacturing or chemical plant operations, such as hydrogen plants. The temperature measurements are done by means of a thermocouple. The thermocouples are generally fixed, such as by screws, to the reactor at a flange of the equipment. The thermocouple wires are then arranged in a special tube extending inside the reactor, the tube protecting the thermocouple wires from direct contact with catalyst or other material in the reactor.
(3) In order to maintain or repair of the thermocouple, it is necessary to open the connection of the thermocouple to the reactor. However, if there is damage or dirty parts resulting from the process, this connection can be difficult to open. In some cases, opening of the connection results in destruction of the thermocouple. In addition, damage to the protection tube inside the reactor can also lead to destruction of the thermocouple. If the thermocouple is destroyed, then correct measurement of the temperature in the reactor and of the process is no longer possible.
(4) There remains a need in the art for mprovements to thermocouple design for process reactors.
SUMMARY OF THE PRESENT INVENTION
(005) The invention provides an improved connection means between the thermocouple and reactor that allows for easy access to the thermocouple even during process operation.
BRIEF DESCRIPTION OF THE DRAWINGS
(6) *Figure 1 is a schematic view of a heat exchanger having an expansion bellows
according to the prior art.
(7) Figure 2 is a schematic view of a heat exchanger having a double expansion bellows according to the invention.
(8) Figure 3 is a detailed view of Detail Area A from Figure 2 according to a first embodiment of the invention.
(9) Figure 4 is a detailed view of Detail Area from Figure 2 according to a second embodiment of the invention.
(10) Figure 5 is a detailed view of Detail Area A from Figure 2 according to the invention,
DETAILED DESCRIPTION OF THE INVENTION
(11) The invention provides an improved connection means between the thermocouple and reactor that allows for easy access to the thermocouple even during process operation. The invention will be described by reference to the drawing figures.
(12) Figure I shows a general arrangement of a system reactor having a flange and thermocouple connection 1 with the thermocouple 11 attached using a thermocouple connection piece 10. Connection to the leakage supervision system and DCS (Distributed Control System) is also shown. Figure 2 shows an exploded view of the thermocouple connection area including the reactor arrangement with the thermocouple 7.
(13) Figure 3 shows an exploded view of detail 2 from Figure 2. Shown is the quick opening closure 8 and leakage supervision system made up of o-ring gasket 2, dovetail groove 3, connection tightening and supervision system 5 and inspection hole 6. Also shown are flange and thermocouple connection I, thermocouple connection piece I 0 and thermocouple Ii. Greater detail of the quick opening closure of the invention is shown in Figure 4 which is a view taken along view A of Figure 3. Figure 4 shows the connection tightening and supervision system 5, and quick opening closure 8 along with the opening and fixing component 9. The flange and thermocouple connection 1, 10 is also shown. The arrows "h" represent movement of the opening and fixing component 9. Figure 5 shows the same components as Figure 3 but includes a further grooved metal gasket 4 for use in high temperature processes.
(14) Further detail of the invention is shown in Figures 6 and 7. In particular, Figure 6 shows an exploded view of the closure system of the invention wherein the arrows represent various movements and flows showing that that the system remains tight and leak free despite inner pressure during operation. Arrows "a" represent the inside pressure, arrows "b" the movement caused by the inside pressure, arrows "c" the fixing pressure by opening closure during assembly or start up, arrows "d" the fixing pressure by opening the device during operation, arrows "e" the stable tightening of the ring gasket and arrows "f' the flange movement. Figure 7 is a further exploded view of detail area 3 from Figure 6 showing arrows "e" and arrows "f' and again showing that the connection remains tight and leak free despite the movements caused by inside pressure during operation.
(15) The invention provides many advantages. In particular, by using the quick opening connection of the invention for thermocouple connection to the reactor flange, it is possible to supervise the working of the thermocouple even during the process operation. The tightness of the connection is supervised and assures leak free operation. In addition, the system of the invention allows for quick change of thermocouples when needed and avoids problems associated with dirty parts. Better maintenance is possible with the invention and it also provides easy system control and tight inner tube control.
(16) The system of the invention is useful in high temperature reactors, but also in any reactor where thermocouples are employed. Leakage supervision is provided by the system invention for process, chemical or manufacturing plants. Improved equipment life cycles are achieved by use of the system of the invention as well as improved maintenance control cycles.
(17) The following components are shown in the drawing figures. I -flange and thermocouple connection 2 -o-ring gasket 3 -dovetail grove 4 -grooved metal gasket -connection tightening and supervision system 6 -vent hole or inspection hole 7 -reactor arrangement with thermocouple 8 -quick opening closure 9 -opening and fixing component -thermocouple connection piece 11 -thermocouple 12 -DCS control center a -inside pressure b -movement caused by inside pressure c -fixing pressure by opening closure during assembly/start up d -fixing pressure by opening device during operation e -stable tightening of ring gasket f -flange movement h -movement opening and closing of device (018) It is anticipated that other embodiments and variations of the present invention will become readily apparent to the skilled artisan in the light of the foregoing description, and it is intended that such embodiments and variations likewise be included within the scope of the invention as set out in the appended claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507360.4A GB2537889A (en) | 2015-04-30 | 2015-04-30 | Thermocouple design for reactors in process plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507360.4A GB2537889A (en) | 2015-04-30 | 2015-04-30 | Thermocouple design for reactors in process plants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201507360D0 GB201507360D0 (en) | 2015-06-17 |
| GB2537889A true GB2537889A (en) | 2016-11-02 |
Family
ID=53488900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1507360.4A Withdrawn GB2537889A (en) | 2015-04-30 | 2015-04-30 | Thermocouple design for reactors in process plants |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2537889A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2173795A1 (en) * | 1972-03-03 | 1973-10-12 | Chauvin Arnoux Sa | |
| CN2577264Y (en) * | 2002-10-18 | 2003-10-01 | 段家龙 | Quick-munting-dismounting electric thermocouple |
| US20110150033A1 (en) * | 2009-12-21 | 2011-06-23 | Nuovo Pignone S.P.A. | Fatigue Resistant Thermowell and Methods |
| DE102013010613A1 (en) * | 2013-06-25 | 2015-01-08 | Linde Aktiengesellschaft | Sealing arrangement for heat exchangers, in particular TEMA heat exchanger |
| EP2884251A1 (en) * | 2013-12-11 | 2015-06-17 | ENDRESS + HAUSER WETZER GmbH + Co. KG | Modular connecting piece |
-
2015
- 2015-04-30 GB GB1507360.4A patent/GB2537889A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2173795A1 (en) * | 1972-03-03 | 1973-10-12 | Chauvin Arnoux Sa | |
| CN2577264Y (en) * | 2002-10-18 | 2003-10-01 | 段家龙 | Quick-munting-dismounting electric thermocouple |
| US20110150033A1 (en) * | 2009-12-21 | 2011-06-23 | Nuovo Pignone S.P.A. | Fatigue Resistant Thermowell and Methods |
| DE102013010613A1 (en) * | 2013-06-25 | 2015-01-08 | Linde Aktiengesellschaft | Sealing arrangement for heat exchangers, in particular TEMA heat exchanger |
| EP2884251A1 (en) * | 2013-12-11 | 2015-06-17 | ENDRESS + HAUSER WETZER GmbH + Co. KG | Modular connecting piece |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201507360D0 (en) | 2015-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |