CN202661436U - Device for online measurement of corrosion and cleaning effect during chemical cleaning of power station boiler - Google Patents
Device for online measurement of corrosion and cleaning effect during chemical cleaning of power station boiler Download PDFInfo
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- CN202661436U CN202661436U CN 201220259438 CN201220259438U CN202661436U CN 202661436 U CN202661436 U CN 202661436U CN 201220259438 CN201220259438 CN 201220259438 CN 201220259438 U CN201220259438 U CN 201220259438U CN 202661436 U CN202661436 U CN 202661436U
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Abstract
The utility model provides a device for online measurement of corrosion and a cleaning effect during chemical cleaning of a power station boiler. The device comprises one group or more than one group of measuring devices which are mutually communicated, wherein each measuring device comprises an electrode fastening ring and an annular measuring electrode, the annular measuring electrode is fixed through the electrode fastening ring and is made by processing a boiler pipe sample, an insulating sealing gasket is arranged between a cut face of each annular measuring electrode and the corresponding electrode fastening ring, every two adjacent measuring devices are connected through a flange interface, a metal ring is sleeved outside each annular measuring electrode, each metal ring is connected with the corresponding measuring device through a measuring lead. According to the utility model, by means of making the measuring electrodes from an actual boiler pipe and adopting an electrochemical technology to carry out online monitoring of corrosion speed and the cleaning effect of a cleaning process, a series of limits existing in the monitoring of the prior art are eliminated.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly the device of a kind of station boiler chemical cleaning on-line measurement corrosion and cleaning performance.
Background technology
After station boiler runs to certain hour, need to adopt chemical cleaning to remove the dirt that heat-transfer surface generates in the operational process (mainly take the oxide of iron as main), with the thermal efficiency that improves boiler and the risk that reduces the heating surface underdeposit corrosion.In the chemical cleaning, the corrosion speed and the cleaning performance evaluation method that usually adopt mainly are corrosion coupons, monitor tube are set and extract the analysis of boiler tube sample, adopt these methods to have following shortcoming:
1) in cleaning process or clean and again corrosion and scale removal efficient to be estimated after finishing, has afterwards property;
2) corrosion data that obtains and scale removal amount are the average results of a time period, do not have instantaneity;
3) to each cleaning step, can't measure respectively such as the corrosion condition of the techniques such as cleaning, flushing, rinsing and passivation;
4) in case corrosion speed appears in cleaning process exceeds standard and the not good situation of descale effect, can't in cleaning process, find, more can not instruct and take measures, cause failure or the accident of cleaning;
The corrosion that 5) can not occur for cleaning process and scale removal problem provide can reference measurement data.
The utility model content
The purpose of this utility model is to solve prior art and can't carries out corrosion speed and the descale effect of Boiler Chemical process and measure in real time, can not in time find to and guide the technical matters such as take measures to the problem that may exist, the device of a kind of station boiler chemical cleaning on-line measurement corrosion and cleaning performance is provided.
For achieving the above object, device of the present utility model comprises: the measurement mechanism that a group or more is interconnected, described measurement mechanism comprises electrode dead ring and two ring-type potential electrode that the boiler tube sample that is connected and adopts manufactures of fixing by the electrode dead ring, be provided with the insulated enclosure pad between the cut surface of each ring-type potential electrode and the electrode dead ring, the two adjacent groups measurement mechanism links to each other by flange-interface, and the flange-interface for the access purging system is installed also in the outside of the electrode dead ring at both ends, the outside in each ring-type potential electrode is set with quoit, and quoit is connected with measurement mechanism by measure traverse line.
On the described electrode dead ring of respectively organizing measurement mechanism the adjusting fastening screw is installed also.
Described electrode dead ring adopts metal material to make, and the external diameter of each electrode dead ring is identical, and internal diameter is identical with the ring-type potential electrode.
The length of described ring-type potential electrode is that 1cm ~ 30cm, thickness are 1mm ~ 15mm.
Described insulated enclosure pad is made by organic material.
Described ring-like quoit and measure traverse line are made by metal material.
In engineering construction or the laboratory washing test, behind this device access purging system, adopt electrochemical apparatus to be connected with measure traverse line at the scene, carry out the corrosion speed of potential electrode and the monitoring of descale effect.
Because the utility model adopts actual boiler control potential electrode, adopt electrochemical techniques to carry out corrosion speed and the cleaning performance of on-line monitoring cleaning process, solved a series of limitation that exist in the prior art monitoring.Use the utility model device, can measure in real time corrosion speed and the scale removal situation of cleaning process, can find in time that the corrosion that cleaning process occurs exceeds standard and the not good accident potential of descale effect.
Description of drawings
Fig. 1 is the structural representation of the utility model chemical cleaning boiler tube monitoring device;
Fig. 2 is the structural representation that the utility model is organized chemical cleaning boiler tube monitoring device more.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to Fig. 1,2, the boiler tube sample processing and fabricating that the utility model is obtained the scene is potential electrode 6 circlewise, ring-type potential electrode 6 is pressed two one group, seal fixingly with electrode dead ring 3, the electrode dead ring adopts external diameter unified, the mode that internal diameter is processed according to the boiler tube diameter.Insulate with insulated enclosure pad 5 in ring-type potential electrode 6 and electrode dead ring 3 contacts site, insulated enclosure pad 5 is according to the inside/outside diameter size processing and fabricating of boiler hollow edged electrode 6.Also be equipped with on the electrode dead ring 3 and regulate fastening screw 7, guarantee the surface of contact of tubulose potential electrode 6 is not leaked by the nut of regulating fastening screw 7 two ends.A ring-like quoit 1 is fixed at ring-type potential electrode 6 middle parts, and the wire joining from the ring-like quoit is drawn measure traverse line 2 and is connected with the electrochemical measurement instrument.Kind and monitoring needs according to the boiler tube sample, can be many to the potential electrode device by the mode processing and fabricating that accompanying drawing 1 provides, every pair of potential electrode device connects by flange-interface 4, be connected with purging system by flange-interface 4 at last, the array configuration that forms as shown in Figure 2 is used for the corrosion speed of Boiler Chemical and the monitoring of cleaning performance.
The utility model is chosen actual boiler tube to be cleaned, is made into the ring-type potential electrode, as the working electrode of galvanochemistry on-Line Monitor Device; The cut surface of pipe fitting is carried out insulated enclosure, by insulating sealer pipe fitting is communicated with, in flange-interface access purging system, and adopt electrochemical measuring method to obtain corrosion data and scale removal data in the cleaning process by electrode.
The surveying instruments such as the utility model and galvanic couple meter, potentiostat, linear polarization corrosion measurer, AC impedance corrosion measurer, permanent electric weight/perseverance electricity charging corrosion measurer, photoelectricity corrosion measurer are joined full use, the corrosion speed situation of change in the cleaning process, the corrosion condition that the boiler tube surface deposits dissolves situation, dissimilar steel welding position be can realize measuring, the molten dirty effect of clean-out system, the corrosion mitigating effect of corrosion inhibiter, the corrosion control effect of cleaning process (such as cleaning, flushing, rinsing, passivation etc.) etc. can be used for estimating.
The method that the utility model is taked is: the utlity model has following advantage:
1) adopts actual boiler tube sample, carry out corrosion speed and descale effect on-line measurement;
The metal material kind that 2) can relate to according to purging system, the potential electrode of selecting to make different materials is measured corrosion speed and the descale effect of cleaning process;
3) corrosion speed and the descale effect of cleaning process are measured in real time, realized measuring data in per 10 minutes, in time find the situation that corrosion speed exceeds standard and the clean-out system descale effect descends;
4) can in time find cleaning quality and accident potential.
Claims (6)
1. the device of station boiler chemical cleaning on-line measurement corrosion and cleaning performance, it is characterized in that: comprise the measurement mechanism that a group or more is interconnected, described measurement mechanism comprises electrode dead ring (3) and the ring-type potential electrode (6) that manufactures by two fixing boiler tube samples that are connected and adopt of electrode dead ring (3), be provided with insulated enclosure pad (5) between the cut surface of each ring-type potential electrode (6) and the electrode dead ring (3), the two adjacent groups measurement mechanism links to each other by flange-interface (4), and the flange-interface (4) for the access purging system is installed also in the outside of the electrode dead ring (3) at both ends, be set with quoit (1) in the outside of each ring-type potential electrode (6), quoit (1) is connected with measurement mechanism by measure traverse line (2).
2. the device of station boiler chemical cleaning on-line measurement corrosion according to claim 1 and cleaning performance is characterized in that: also be equipped with on the described electrode dead ring (3) of respectively organizing measurement mechanism and regulate fastening screw (7).
3. the device of station boiler chemical cleaning on-line measurement corrosion according to claim 1 and cleaning performance, it is characterized in that: described electrode dead ring (3) adopts metal material to make, the external diameter of each electrode dead ring (3) is identical, and internal diameter is identical with ring-type potential electrode (6).
4. the device of station boiler chemical cleaning on-line measurement corrosion according to claim 1 and cleaning performance, it is characterized in that: the length of described ring-type potential electrode (6) is that 1cm ~ 30cm, thickness are 1mm ~ 15mm.
5. the device of station boiler chemical cleaning on-line measurement corrosion according to claim 1 and cleaning performance, it is characterized in that: described insulated enclosure pad (5) is made by organic material.
6. the device of station boiler chemical cleaning on-line measurement corrosion according to claim 1 and cleaning performance, it is characterized in that: described ring-like quoit (1) and measure traverse line (2) are made by metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220259438 CN202661436U (en) | 2012-06-04 | 2012-06-04 | Device for online measurement of corrosion and cleaning effect during chemical cleaning of power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220259438 CN202661436U (en) | 2012-06-04 | 2012-06-04 | Device for online measurement of corrosion and cleaning effect during chemical cleaning of power station boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661436U true CN202661436U (en) | 2013-01-09 |
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ID=47456334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220259438 Expired - Lifetime CN202661436U (en) | 2012-06-04 | 2012-06-04 | Device for online measurement of corrosion and cleaning effect during chemical cleaning of power station boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020240915A1 (en) * | 2019-05-24 | 2020-12-03 | 三菱重工業株式会社 | Test piece holder, cleansing system, method for measuring amount of corrosion, and device for measuring amount of corrosion |
-
2012
- 2012-06-04 CN CN 201220259438 patent/CN202661436U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020240915A1 (en) * | 2019-05-24 | 2020-12-03 | 三菱重工業株式会社 | Test piece holder, cleansing system, method for measuring amount of corrosion, and device for measuring amount of corrosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20140108 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20140108 |
|
| RGAV | Abandon patent right to avoid regrant |