GB2261956A - Corrosion monitor - Google Patents
Corrosion monitor Download PDFInfo
- Publication number
- GB2261956A GB2261956A GB9224778A GB9224778A GB2261956A GB 2261956 A GB2261956 A GB 2261956A GB 9224778 A GB9224778 A GB 9224778A GB 9224778 A GB9224778 A GB 9224778A GB 2261956 A GB2261956 A GB 2261956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- corrosion
- monitor
- heat exchanger
- indicia
- 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- Withdrawn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
- 230000007797 corrosion Effects 0.000 title claims abstract description 17
- 238000005260 corrosion Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000000737 periodic effect Effects 0.000 abstract description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A corrosion monitor for a vessel, eg a heat exchanger, comprises an element (14) of similar material to that of the vessel, located in the vessel in a position where it will be exposed to a corrosive fluid and where it can be monitored during inspection of the vessel. The element (14) is shaped so as to have features such as recesses (18, 19) and notches (24). Periodic monitoring of the element (14) provides a measure of the degree of corrosion of the vessel by the amount of the element (14), and its features, that has been depleted by the corrosive fluid. <IMAGE>
Description
Corrosion Monitor
This invention relates to a corrosion monitor, and more particularly to a monitor for indicating the corrosion of a vessel.
According to the present invention, there is provided a corrosion monitor for a vessel, the monitor comprising an element of a similar material to that of the vessel and being locatable in the vessel, the element being shaped in a manner to provide indicia of the extent of any corrosion of the element and thereby of the vessel.
Preferably, the element is shaped to define a plurality of recesses of differing depths, thereby to provide said indicia.
Advantageously, at least one shaped groove in the element provides said indicia.
The invention will now be further described by way of example only with reference to the accompanying drawings in which:
Figure 1 shows a fragmentary plan view of the interior of a vessel;
Figure 2 shows to an enlarged scale a plan view of a corrosion monitor in the vessel of Figure 1;
Figure 3 shows a view in the direction of arrow 'A' of Figure 2, and
Figure 4 shows a sectional view on the line IV-IV of
Figure 2.
Referring now to Figure 1, the interior of a vessel in the form of a heat exchanger 10 is shown having a large number of tubes 12 for a highly corrosive fluid (eg nitric acid). In order to monitor the extent of corrosion of the heat exchanger 10, at least one sacrificial monitor element 14 of the same material as the heat exchanger (eg stainless steel) is welded to the heat exchanger 10 in a position where it will be exposed to the corrosive fluid and where it can be monitored during inspection of the heat exchanger 10.
As shown in Figures 2 to 4, the element 14 is flat on one side 16, has a base 17, and rectangular recesses 18, 19 (only two are shown) in its other side 20, the recesses 18, 19 being of different depths with respect to the side 16. Two longitudinally extending
V-notches 24 are formed at the corners of the recesses 18, 19 on the top 25 of the element 14, the apex of each notch 24 being coincident with sides 26, 28 of the respective recesses 18, 19.
In operation with the base 17 of the element 14 attached to the heat exchanger 10 by welding, periodic monitoring of the element 14 (eg by a closed-circuit television camera) provides a measure of the degree of corrosion of the heat exchanger 10 by the amount of the element 14 that has been depleted by the corrosive fluid. In this respect, the width of the notches 24 in relation to the top 25 of the element 14, as well as the thickness of the recesses 18, 19 allows an estimate to be made of the depletion of the material of the heat exchanger 10.
Depending on the size of the heat exchanger 10 a plurality of the elements 14 may be provided.
Although the element 14 has been shown as being welded but its base 17 to the heat exchanger 10, the element 14 may be attached by some other portions thereof.
For some applications some shape other than rectangular may have advantages. An alternative number of recesses may be used, and other features may be impressed (eg numerals) in the element to provide said indicia.
Claims (5)
1. A corrosion monitor for a vessel, the monitor comprising an element of similar material to that of the vessel and being locatable in the vessel, the element being shaped in a manner to provide indicia of the extent of any corrosion of the element and thereby of the vessel.
2. A corrosion monitor as claimed in Claim 1, wherein the element is shaped to define a plurality of recesses of differing depths, thereby to provide said indicia.
3. A corrosion monitor as claimed in Claim 1 or
Claim 2, wherein at least one shaped groove in the element provides said indicia.
4. A corrosion monitor as claimed in any one of the preceding Claims, wherein features are impressed in the element to provide said indicia.
5. A corrosion monitor for a vessel substantially as hereinbefore described with reference to Figures 1 to 4 of the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB919125191A GB9125191D0 (en) | 1991-11-27 | 1991-11-27 | Corrosion material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9224778D0 GB9224778D0 (en) | 1993-01-13 |
| GB2261956A true GB2261956A (en) | 1993-06-02 |
Family
ID=10705304
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB919125191A Pending GB9125191D0 (en) | 1991-11-27 | 1991-11-27 | Corrosion material |
| GB9224778A Withdrawn GB2261956A (en) | 1991-11-27 | 1992-11-26 | Corrosion monitor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB919125191A Pending GB9125191D0 (en) | 1991-11-27 | 1991-11-27 | Corrosion material |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9125191D0 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0909945A2 (en) * | 1997-10-15 | 1999-04-21 | Kurita Water Industries Ltd. | Corrosion monitoring |
| GB2368378A (en) * | 2000-09-14 | 2002-05-01 | Yokohama Rubber Co Ltd | Hose and deterioration measuring method of same |
| GB2374647A (en) * | 2000-09-14 | 2002-10-23 | Yokohama Rubber Co Ltd | Hose deterioration measuring method |
| CN1590981B (en) * | 2003-08-29 | 2010-09-29 | 西安热工研究院有限公司 | Manufacturing method of heat exchanger pipe corrosion monitoring sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599217A (en) * | 1985-01-22 | 1986-07-08 | Exxon Chemical Patents Inc. | Corrosion simulator useful for heat exchangers condensing vapors containing water and method for using same |
| US4688638A (en) * | 1986-05-23 | 1987-08-25 | Conoco Inc. | Downhole corrosion coupon holder |
| WO1991016614A1 (en) * | 1990-04-19 | 1991-10-31 | Long Manufacturing Ltd. | Coolant corrosiveness indicator |
-
1991
- 1991-11-27 GB GB919125191A patent/GB9125191D0/en active Pending
-
1992
- 1992-11-26 GB GB9224778A patent/GB2261956A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599217A (en) * | 1985-01-22 | 1986-07-08 | Exxon Chemical Patents Inc. | Corrosion simulator useful for heat exchangers condensing vapors containing water and method for using same |
| US4688638A (en) * | 1986-05-23 | 1987-08-25 | Conoco Inc. | Downhole corrosion coupon holder |
| WO1991016614A1 (en) * | 1990-04-19 | 1991-10-31 | Long Manufacturing Ltd. | Coolant corrosiveness indicator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0909945A2 (en) * | 1997-10-15 | 1999-04-21 | Kurita Water Industries Ltd. | Corrosion monitoring |
| EP0909945A3 (en) * | 1997-10-15 | 2000-10-04 | Kurita Water Industries Ltd. | Corrosion monitoring |
| GB2368378A (en) * | 2000-09-14 | 2002-05-01 | Yokohama Rubber Co Ltd | Hose and deterioration measuring method of same |
| GB2368378B (en) * | 2000-09-14 | 2002-09-18 | Yokohama Rubber Co Ltd | Hose |
| GB2374647A (en) * | 2000-09-14 | 2002-10-23 | Yokohama Rubber Co Ltd | Hose deterioration measuring method |
| GB2374647B (en) * | 2000-09-14 | 2003-04-09 | Yokohama Rubber Co Ltd | Hose deterioration measuring method |
| CN1590981B (en) * | 2003-08-29 | 2010-09-29 | 西安热工研究院有限公司 | Manufacturing method of heat exchanger pipe corrosion monitoring sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9125191D0 (en) | 1992-01-29 |
| GB9224778D0 (en) | 1993-01-13 |
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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) |