SE2030171A1 - Method, sensor and system for measuring corrosion - Google Patents
Method, sensor and system for measuring corrosionInfo
- Publication number
- SE2030171A1 SE2030171A1 SE2030171A SE2030171A SE2030171A1 SE 2030171 A1 SE2030171 A1 SE 2030171A1 SE 2030171 A SE2030171 A SE 2030171A SE 2030171 A SE2030171 A SE 2030171A SE 2030171 A1 SE2030171 A1 SE 2030171A1
- Authority
- SE
- Sweden
- Prior art keywords
- tubular body
- sensor arrangement
- fluid
- sensor
- temperature
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 29
- 230000007797 corrosion Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 16
- 239000012530 fluid Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000003936 working memory Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/04—Corrosion probes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/025—Devices and methods for diminishing corrosion, e.g. by preventing cooling beneath the dew point
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0084—Combustion air preheating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/40—Arrangements for preventing corrosion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Ecology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
A sensor arrangement 100 for corrosion, comprising a first tubular body 101 having an inlet in a first end 102 and an outlet in a second end 103; a second tubular body 104 enclosing at least a part of a circumferential surface of the first tubular body 101; wherein the sensor arrangement 100 is characterized in that it comprises a plurality of temperature sensors T0-TN arranged on an outer surface of the first tubular body 101 and enclosed by the second tubular body 104, wherein the plurality of temperature sensors are distributed along a longitudinal direction of the outer surface of the first tubular body and wherein the plurality of temperature sensors are configured to sense a plurality of wall temperatures of the second tubular body; and a controllable fluid flow device 105 with an outlet connected to the first end 102 of the first tubular body 101, or the second tubular body 104, wherein the fluid flow device is configured to control a fluid flow from the first end to the second end of the first tubular body.
Description
A sensor TECHNICAL FIELD The present disclosure relates to a sensor arrangement for corrosion, comprisinga first tubular body having an inlet in a first end and an outlet in a second end asecond tubular body enclosing at least a part of a circumferential surface of thefirst tubular body.
The present disclosure also relates to a sensor system comprising such a sensorarrangement, and a method of a sensor system.
BACKG ROUND ln a heating plant which comprises a flue gas system, corrosion may occur inmany different places. For example, in a preheater where flue gas is recirculatedin order to preheat the incoming air needed for combustion in a boiler in order toincrease thermal efficiency of the boiler. However, in a heating plant, there is aninterest in using as much thermal energy as possible for production of heat. Thisimplies that there is an interest in using low temperatures for preheating. This inturn means that the temperature of recirculated flue gas should be as low aspossible. But if the temperature of the flue gas becomes too low there is anincreased risk of dew point corrosion in the flue gas system. Corrosion in aheating plant should be avoided at all cost since the maintenance cost andreliability of the plant is at risk.
This means that there is a large interest in measuring the temperature whichinitiate the corrosive attack. Such corrosion sensors are known within the art andDE102009053719A1 is an example of such a sensor. The patent applicationDE102009053719A1 discloses a lance with several electrodes arranged in the tipof the lance for contact with a corrosive medium. The temperatures of theelectrodes may be influenced with a tempering device. This solution involves a rather complicated arrangement of electrodes that are thermally isolated fromeach other in order to provide different operating temperatures for the electrodes.Furthermore, this solution provides corrosion information at discrete temperaturescorresponding to the electrode temperatures. This means that the exacttemperature at corrosion is started will not be not measured, only corrosion atdiscrete temperatures are measured with this sensor.
Hence, there is a need for an improved sensor which will provide more exactinformation at which temperature corrosion will start, and there is also a great need for a simpler sensor. lt is thus an aspect of this disclosure to present an improved sensor arrangementwhich obviates the use of thermally isolated electrodes and provides moredetailed information about the temperature which onsets the corrosion.
SUMMARY The present disclosure therefore relates to a sensor arrangement, said sensorarrangement being characterized in that it comprises a plurality of temperaturesensors arranged on an outer surface of the first tubular body and enclosed bythe second tubular body, wherein the plurality of temperature sensors aredistributed along a longitudinal direction of the outer surface of the first tubularbody and wherein the plurality of temperature sensors are configured to sense aplurality of wall temperatures of the second tubular body; and a controllable fluidflow device arranged at a first end of the first tubular body or the second tubularbody, wherein the fluid flow device is configured to control a fluid flow of the firsttubular body.
According to one embodiment, the fluid flow is a flow of flue gases.
According to one embodiment, the sensor arrangement additionally comprises aseparation tubular body having an inner and an outer surface and wherein the inner surface is in contact with the first tubular body, and the outer surface is incontact with the second tubular body and wherein the separation tubular bodyhas one or more recesses for said plurality of temperature sensors body.
This allows mounting of thermocouplers or resistance thermometers such as butnot limited to PTt-100 (also known as PT-100) on the first tubular body and theseparation tubular body assures clearance to the second tubular body.
According to one embodiment, the sensor arrangement further comprises a fluidassembly connected to the inlet of the fluid flow device, wherein the fluidassembly comprises at least one device from the group comprising: a fluid heaterdevice, a fluid cooling device, a fluid pump, a compressor, and a fan.
According to one embodiment, the first tubular body of the sensor arrangement iscomposed of a material which is more corrosion resistant than the material ofwhich the second tubular body of the sensor arrangement is composed of.According to another embodiment, the first tubular body of the sensorarrangement and the second tubular body of the sensor arrangement arecomposed of the same material. This provides for an increased safety for thesensor arrangement since the risk of fatal corrosive attack on the sensorarrangement is reduced.
According to one embodiment, the first tubular body of the sensor arrangement iscomposed of a stainless steel and the second tubular body of the sensorarrangement is composed of a carbon steel.
According to one embodiment, the first tubular portion has an inner diameter of maximum 50 mm.
According to one embodiment, the length of the sensor arrangement is largerthan 2 m.
According to one embodiment, the controllable fluid flow device is a valve. 4 The present disclosure also relates to a sensor system for measuring corrosion,characterized in that the system comprises: a sensor arrangement according toembodiments disclosed herein, a signal conditioning circuit connected to saidplurality of temperature sensors. The signal conditioning circuit is configured tooutput the measured temperatures at an output port. A control circuit isconnected to said output port of the signal conditioning circuit. The control circuitis connected to and configured to control the fluid flow device, wherein the controlcircuit is configured to receive a set point temperature and to control the fluid flowdevice based on the set temperature and at least one of the measuredtemperatures.
According to one embodiment of the sensor system, when the sensorarrangement comprises a fluid assembly operatively connected to an inlet of thefluid flow device, the flow assembly is connected to and controlled by the control circuit.
This disclosure also relates to a method of a sensor system. The sensor systemcomprises a sensor arrangement according to embodiments disclosed herein andwherein the method is characterized in that it comprises the following steps: a)determining at least one temperature from the plurality of temperature sensor; b)adjusting the fluid flow by means of the fluid flow device based on the at least onedetermined temperature; c) detecting corrosion on the second tubular portion at alongitudinal position on the second tubular portion; and d) upon detectingcorrosion at the longitudinal position of the second tubular portion, determiningthe temperature of the longitudinal position of the second tubular portion by means of measured temperatures from the plurality of temperature sensors.
According to one embodiment, the sensor system further comprises a fluidassembly connected to an inlet of the fluid flow device, and the method is thenfurther comprising the step of: controlling the fluid assembly based on the at leastone determined temperature.
The present disc|osure also presents a computer-readable storage mediumstoring computer program instructions which, when executed by a processor,causes the processor to perform a method according to embodiments disc|osed herein.
The present disc|osure also presents a signal carrying computer programinstructions which, when executed by a processor, causes the processor toperform a method according to embodiments disc|osed herein.
The present disc|osure disc|oses an arrangement for a heating plant, wherein thearrangement comprises a closed compartment with an inlet for fluid and acorresponding outlet for fluid, wherein the arrangement is characterized in that itcomprises a sensor system according to embodiments of the present disc|osure.The first end of the sensor arrangement of the sensor system is arranged on anoutside of said closed compartment, and the second end of the sensorarrangement of the sensor system is arranged on an inside of said closedcompartment, whereby an underpressure in the closed compartment causes afluid flow through the sensor arrangement, whereby a temperature gradient alongthe longitudinal axis of the sensor arrangement is established.
LIST OF DRAWINGS Embodiments will now be described, by way of example only, with reference tothe accompanying drawings in which: Fig. 1 is a schematic drawing of a sensor arrangement according to anembodiment of this disc|osure; Fig. 2 is a cross section along line A-A” of Fig. 1 of a sensor arrangementaccording to an embodiment of this disc|osure; Fig. 3 is a graph illustrating temperatures measured along the longitudinaldirection of an embodiment of the present disc|osure; Fig. 4 is block diagram of a sensor system according to an embodiment of thedisclosure; Fig. 5 is a block diagram illustrating an arrangement for a heating plantaccording to an embodiment of the present disclosure; Fig. 6 is flow diagram illustrating a method according to an embodiment of thepresent disclosure; and Fig. 7 discloses an embodiment of a computer for carrying out methodsdisclosed in this disclosure.
DETAILED DESCRIPTION OF E|\/|BOD||\/IENTS Reference is now made to Fig. 1 in which a sensor arrangement 100 for corrosionis disclosed. The sensor arrangement comprises: a first tubular body 101 havingan inlet in a first end 102 and an outlet in a second end 103; a second tubularbody 104 enclosing at least a part of a circumferential surface of the first tubularbody 101 ; wherein the sensor arrangement 100 is characterized in that itcomprises a plurality of temperature sensors T0-TN arranged on an outer surfaceof the first tubular body 101 and enclosed by the second tubular body 104,wherein the plurality of temperature sensors are distributed along a longitudinaldirection of the outer surface of the first tubular body and wherein the plurality oftemperature sensors are configured to sense a plurality of wall temperatures ofthe second tubular body; and a controllable fluid flow device 105 with an outletconnected to the first end 102 of the first tubular body 101, or the second tubularbody 104, wherein the fluid flow device is configured to control a fluid flow fromthe first end to the second end of the first tubular body.
Reference is now made to Fig. 2 which shows a cross-section of an embodimentof a sensor arrangement along a line A-A” of Fig. 1. The sensor arrangement ofFig. 2 differs from the sensor arrangement disclosed in Fig. 1 in that it additionallycomprises a separation tubular body (201) having an inner (201A) and an outer surface (201 B) and wherein the inner surface is in contact with the first tubularbody, and the outer surface is in contact with the second tubular body andwherein the separation tubular body has one or more recesses for said plurality oftemperature sensors body.
According to one embodiment, the first tubular body is composed of a stain|esssteel and the second tubular body is composed of a carbon steel. ln the sensor arrangement disc|osed with reference made to Fig. 1 and Fig. 4 thefirst tubular body is composed of a material which is more corrosion resistive thanthe material of which the second tubular body is composed of, or the first tubularbody and the second tubular body are composed of the same material.
The controllable fluid flow device is a valve in Fig. 1 and 4.
Reference is now made to Fig. 4 in which the sensor arrangement furthercomprises a fluid assembly 403 connected to the inlet of the fluid flow device,wherein the fluid assembly comprises at least one from the group comprising: afluid heater device, a fluid cooling device, a fluid pump, a compressor, and a fan.
Fig. 4 discloses a sensor system 400 for measuring corrosion. The systemcomprises a sensor arrangement 100 according to the embodiment disc|osedwith reference made to Fig. 1. The system further comprises a signal conditioningcircuit 401 connected to said plurality of temperature sensors, wherein the signalconditioning circuit is configured to output the measured temperatures at anoutput port. The system further comprises a control circuit 402 connected to saidoutput port of the signal conditioning circuit, wherein the control circuit isconnected to and configured to control the fluid flow device 105. The controlcircuit is configured to receive a set point temperature and to control the fluid flowdevice based on the set temperature and at least one of the measuredtemperatures. ln the sensor system according to Fig. 4, the sensor arrangement comprises afluid assembly 403 operatively connected to an inlet of the fluid flow device, theflow assembly is connected to and controlled by the control circuit. ln theembodiment of Fig. 4 the fluid assembly is preferably a fan, or a compressor. ln order to understand the sensor system of Fig. 4 it will be discussed in thecontext of an arrangement 500 for a heating plant as shown in Fig. 5. Thearrangement comprises a closed compartment 501, which may for example be apreheater for a boiler. The closed compartment comprises an inlet 502 for fluid, inthe case of a boiler and a preheater the fluid is flue gases, and a correspondingoutlet 503 for flue gases. ln a preheater the dew point temperature which onsetsdew point corrosion is of great interest. The outlet has a lower pressurecompared to the inlet which causes a flow of flue gases from the inlet to theoutlet. The arrangement comprises a sensor system 400 according toembodiments; wherein the first end of the sensor arrangement of the sensorsystem is arranged on an outside of said closed compartment, and the secondend of the sensor arrangement of the sensor system is arranged on an inside ofsaid closed compartment, whereby an underpressure in the closed compartmentcauses a fluid flow (in this case an air flow) through the sensor arrangement,whereby a temperature gradient along the longitudinal axis of the sensorarrangement is established. lf the sensor arrangement is arranged in the closedcompartment during operation of the preheater during a predetermined period oftime dew point corrosion may be detected on the second tubular portion.
Due to the temperature gradient along the longitudinal axis of the sensorarrangement, the temperature which onsets dew point corrosion may bedetermined by removing the sensor arrangement from the closed compartmentand identifying the longitudinal position of the dew point corrosion, whichlongitudinal position gives the temperature using a graph 300 as disclosed in Fig.3.
Reference is now made to Fig. 3 which shows the relation between longitudinalposition and temperature of the sensor arrangement. By inspection in this graph300 it is possible to determine the temperature which onsets dew point corrosionbased on the longitudinal position of the dew point corrosion attack on the secondtubular portion.
Thus the temperature gradient caused by the fluid flow in the sensor arrangementmay be used to determine the dew point temperature, and this information maybe used to optimize the therma| efficiency of a heating plant.
Reference is now made to Fig. 6 which disc|oses a flow chart which illustrates amethod 600 of a sensor system, wherein the sensor system comprises a sensorarrangement 100 according to embodiments; and wherein the method 600 ischaracterized in that it comprises the following steps: a) Determining (601) at least one temperature from the plurality of temperature SGFISOF. b) Adjusting (602) the fluid flow by means of the fluid flow device based on the atleast one determined temperature. c) Detecting corrosion (603) on the second tubular portion at a longitudinalposition on the second tubular portion, and d) Upon detecting corrosion (603) at the longitudinal position of the secondtubular portion, determining (604) the temperature of the longitudinal position ofthe second tubular portion by means of measured temperatures from the plurality Of tempefatüfe SGHSOFS.
When the sensor system further comprises a fluid assembly 403 connected to aninlet of the fluid flow device, the method further comprises a step of controlling thefluid assembly based on the at least one determined temperature.
Fig. 7 shows an exemplary implementation of the control circuit 402, as aprogrammable signal processing hardware 700 _ The signal processing apparatus700 shown in Fig. 7 comprises an input/output section 701 for receiving the settemperature for example, and for transmitting control signals to for example thefluid flow device 105. The signal processing apparatus 700 further comprises aprocessor 702, a working memory 703 and an instruction store 704 storingcomputer-readable instructions which, when executed by the processor 702,cause the processor 702 to perform processing operations herein described for amethod of a sensor arrangement. The instruction store 704 may comprise a ROIVIwhich is preloaded with computer readable instructions. Alternatively, instructionstore 704 may comprise a RAM or similar type of memory, and the computerreadable instructions can be input thereto from a computer program product,such as a computer readable storage medium 705 such as a CD-ROIVI, etc. or acomputer readable signal 706 carrying the computer readable instructions.
Claims (13)
1. CLA||\/IS1. A sensor arrangement (100) for corrosion, comprising: a first tubular body (101) having an inlet at a first end (102) and an outlet at a second end (103); a second tubular body (104) enclosing at least a part of a circumferential surface of the first tubular body (101); wherein the sensor arrangement (100) is characterized in that it comprises:a plurality of temperature sensors (T0-TN) arranged on an outersurface of the first tubular body (101) and enc|osed by the secondtubular body (104), wherein the plurality of temperature sensorsare distributed along a longitudinal direction of the outer surfaceof the first tubular body and wherein the plurality of temperaturesensors are configured to sense a plurality of wall temperatures ofthe second tubular body; and a controllable f|uid flow device (105) with an outlet connected tothe first end (102) of the first tubular body (101) or to the secondtubular body (104), wherein the f|uid flow device is configured tocontrol a f|uid flow from the first end to the second end of the firsttubular body.
2. The sensor arrangement according to claim 1, characterized in that itadditionally comprises a separation tubular body (201) having an inner (201A)and an outer surface (201 B) and wherein the inner surface is in contact withthe first tubular body, and the outer surface is in contact with the secondtubular body and wherein the separation tubular body has one or morerecesses for said plurality of temperature sensors bodies. 12
3. _ The sensor arrangement according to claim 1 or claim 2, characterized in that it further comprises a fluid assembly (403) connected to the inlet of the fluidflow device, wherein the fluid assembly comprises at least one device selectedfrom the group comprising: a fluid heater device, a fluid cooling device, a fluid pump, a compressor, and a fan.
4. _ The sensor arrangement according to any one of the preceding claims, characterized in that the first tubular body is composed of a material which ismore corrosion resistant than the material of which the second tubular body iscomposed of, or the first tubular body and the second tubular body arecomposed of the same material.
5. _ The sensor arrangement according to any one of the preceding claims, characterized in that the first tubular body is composed of a stainless steel andthe second tubular body is composed of a carbon steel.
6. _ The sensor arrangement according to any one of the preceding claims, characterized in that the controllable fluid flow device is a valve.
7. _ A sensor system (400) for measuring corrosion, characterized in that the system comprises: a sensor arrangement (100) according to any one of the precedingclaims; a signal conditioning circuit (401) connected to said plurality oftemperature sensors, wherein the signal conditioning circuit isconfigured to output the measured temperatures at an output port;a control circuit (402) connected to said output port of the signalconditioning circuit, wherein the control circuit is connected to andconfigured to control the fluid flow device (105), wherein the control 13 circuit is configured to receive a set point temperature and to control the fluid flow device based on the set temperature and at least one of the mGaSUFGÖ tempefatü FGS.
8. The sensor system according to c|aim 7, characterized in in that when the sensor arrangement comprises a fluid assembly (403) operatively connected to an in|et of the fluid flow device, the fluid assembly is connected to and controlled by the control circuit.
9. A method (600) of a sensor system, wherein the sensor system comprises: a sensor arrangement (100) according to any one of claims 1 to 6; and wherein the method (600) is characterized in that it comprises the following steps: a) determining (601) at least one temperature from the b) plurality of temperature sensor; adjusting (602) the fluid flow by means of the controllablefluid flow device based on the at least one determinedtemperature; detecting corrosion (603) on the second tubular portion ata longitudinal position on the second tubular portion; andupon detecting corrosion (603) at the longitudinal positionof the second tubular portion, determining (604) thetemperature of the longitudinal position of the secondtubular portion by means of measured temperatures fromthe plurality of temperature sensors.
10. The method according to c|aim 9, wherein the sensor system further comprises a fluid assembly (403) connected to an in|et of the fluid flow device, 14 and wherein the method is characterized by further comprising: controlling thefluid assembly based on the at least one determined temperature.
11. A computer-readable storage medium (705) storing computer programinstructions which, when executed by a processor (702), causes the processorto perform a method as set out in at least one of claims 9 to 10.
12. A signal (706) carrying computer program instructions which, whenexecuted by a processor (702), causes the processor to perform a method asset out in at least one of claims 9 to 10.
13. An arrangement (500) for a heating plant, wherein the arrangementcomprises a closed compartment (501) with an inlet (502) for fluid and acorresponding outlet (503) for fluid, wherein the arrangement is characterizedin that it comprises: a sensor system (400) according to any one of claims 7 to8; wherein the first end of the sensor arrangement of the sensor system isarranged on an outside of said closed compartment, and the second end ofthe sensor arrangement of the sensor system is arranged on an inside of saidclosed compartment, whereby an underpressure in the closed compartmentcauses a fluid flow through the sensor arrangement, whereby a temperaturegradient along the longitudinal axis of the sensor arrangement is established.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2030171A SE2030171A1 (en) | 2020-05-25 | 2020-05-25 | Method, sensor and system for measuring corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2030171A SE2030171A1 (en) | 2020-05-25 | 2020-05-25 | Method, sensor and system for measuring corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE543775C2 SE543775C2 (en) | 2021-07-20 |
| SE2030171A1 true SE2030171A1 (en) | 2021-07-20 |
Family
ID=76756097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2030171A SE2030171A1 (en) | 2020-05-25 | 2020-05-25 | Method, sensor and system for measuring corrosion |
Country Status (1)
| Country | Link |
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| SE (1) | SE2030171A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0065128A2 (en) * | 1981-05-09 | 1982-11-24 | BROWN BOVERI REAKTOR GmbH | Device for the determination of the saturation temperature of a hot liquid under pressure and circuit to guard the difference with respect to the saturation temperature and the vaporisation when using this device |
| US5854557A (en) * | 1993-04-16 | 1998-12-29 | Tiefnig; Eugen | Corrosion measurement system |
| GB2393781A (en) * | 2002-10-01 | 2004-04-07 | Lattice Intellectual Property | Corrosion prediction based on the detection of temperature and fluids by fibre optics |
| US20060125480A1 (en) * | 2002-07-18 | 2006-06-15 | Rengaswamy Srinivasan | Embeddable corrosion rate meters for remote monitoring of structures susceptible to corrosion |
| DE102009012712B3 (en) * | 2009-03-11 | 2010-07-08 | Corrmoran Gmbh | Sensor head for corrosion test sensor, has traction device fixing head in longitudinal direction under tensile stress such that counter and operating electrodes and insulating rings are pushed against each other |
| DE102009053719A1 (en) * | 2009-11-18 | 2011-05-19 | Technische Universität Darmstadt | corrosion probe |
| DE102012107792B3 (en) * | 2012-08-23 | 2014-01-16 | Bernd Epple | Corrosion probe for a wall section of a boiler or a heat exchanger |
| US20150323391A1 (en) * | 2012-12-04 | 2015-11-12 | Malcolm Duncan McCulloch | Sensor, controller and system |
| DE102014007753A1 (en) * | 2014-05-23 | 2015-11-26 | Steinmüller Babcock Environment Gmbh | Corrosion probe and method for installing a corrosion probe |
-
2020
- 2020-05-25 SE SE2030171A patent/SE2030171A1/en not_active IP Right Cessation
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0065128A2 (en) * | 1981-05-09 | 1982-11-24 | BROWN BOVERI REAKTOR GmbH | Device for the determination of the saturation temperature of a hot liquid under pressure and circuit to guard the difference with respect to the saturation temperature and the vaporisation when using this device |
| US5854557A (en) * | 1993-04-16 | 1998-12-29 | Tiefnig; Eugen | Corrosion measurement system |
| US20060125480A1 (en) * | 2002-07-18 | 2006-06-15 | Rengaswamy Srinivasan | Embeddable corrosion rate meters for remote monitoring of structures susceptible to corrosion |
| GB2393781A (en) * | 2002-10-01 | 2004-04-07 | Lattice Intellectual Property | Corrosion prediction based on the detection of temperature and fluids by fibre optics |
| DE102009012712B3 (en) * | 2009-03-11 | 2010-07-08 | Corrmoran Gmbh | Sensor head for corrosion test sensor, has traction device fixing head in longitudinal direction under tensile stress such that counter and operating electrodes and insulating rings are pushed against each other |
| DE102009053719A1 (en) * | 2009-11-18 | 2011-05-19 | Technische Universität Darmstadt | corrosion probe |
| DE102012107792B3 (en) * | 2012-08-23 | 2014-01-16 | Bernd Epple | Corrosion probe for a wall section of a boiler or a heat exchanger |
| US20150323391A1 (en) * | 2012-12-04 | 2015-11-12 | Malcolm Duncan McCulloch | Sensor, controller and system |
| DE102014007753A1 (en) * | 2014-05-23 | 2015-11-26 | Steinmüller Babcock Environment Gmbh | Corrosion probe and method for installing a corrosion probe |
Non-Patent Citations (1)
| Title |
|---|
| Heng Ban, Zuoping Li, "A novel capacitance sensor for fireside corrosion measurement", Review of Scientific Instruments 80, 115107 (2009). Published November 12, 2009. * |
Also Published As
| Publication number | Publication date |
|---|---|
| SE543775C2 (en) | 2021-07-20 |
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