CN201965171U - Measuring device for electric current potential of macro cell - Google Patents
Measuring device for electric current potential of macro cell Download PDFInfo
- Publication number
- CN201965171U CN201965171U CN2011200538711U CN201120053871U CN201965171U CN 201965171 U CN201965171 U CN 201965171U CN 2011200538711 U CN2011200538711 U CN 2011200538711U CN 201120053871 U CN201120053871 U CN 201120053871U CN 201965171 U CN201965171 U CN 201965171U
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- macro cell
- corrosion
- electric current
- integrated transporting
- transporting discharging
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Abstract
The utility model relates to a measuring device for the electric current potential of a macro cell; the measuring device comprises an electric current measuring module and a voltage measuring module, wherein the electric current measuring module is used for measuring corrosion electric currents of the macro cell, and the voltage measuring module is used for measuring corrosion voltages of the macro cell; the electric current measuring module is connected with the voltage measuring module; the electric current measuring module consists of a zero resistance current meter and a signal amplifier; and the voltage measuring module consists of an integrated operational amplifier and a resistance connected with the integrated operational amplifier. Compared with the prior art, the measuring device has the beneficial effects that the measuring device can accurately measure the electric current value of the microampere-level macro cell and reduces the error of electric current measurement of the macro cell; as the electric current value has direct relativity with the corrosion rate of a reinforcing steel bar in concrete, the corrosion rate of the reinforcing steel bar in concrete can be further calculated; in addition, the corrosion potential of the macro cell can be obtained and assists the electric currents of the macro cell to assess the corrosion state of the reinforcing steel bar.
Description
Technical field
The utility model belongs to steel corrosion degree detecting field, more particularly, relates in particular to a kind of electric current potential test device of macro cell.
Background technology
The corrosion of reinforcing bar is the main cause that causes that reinforced concrete structure durability is degenerated and shorten serviceable life, can cause the reduction of decline of reinforced concrete member bearing capacity and ductility, thereby influence the security and the permanance of total, serious corrosion even can cause structural damage.According to statistics, the corrosion loss in present domestic crude steel every year accounts for steel and produces 10% of total amount, account for more than 3% of GDP, caused economic loss to reach 10,000 hundred million yuan in 2009, bear 800 yuan of corrosion loss per capita, corrode the feature that the reinforcement corrosion that causes generally shows as macro cell corrosion by chlorion in the concrete, promptly take off the anode of blunt part reinforcing bar as the corrosion reaction battery, near do not take off blunt reinforcing bar and lead as negative electrode, the anode of above-mentioned these formation and cathode zone just, form a series of corrosion cell together, caused the ion of anode region to be decomposed.
Reinforcement corrosion is an electrochemical process in the concrete, and grand current method of the prior art is to adopt reinforcing bar to be measured and corrosion galvanic couple of a common formation of inertia auxiliary electrode, adopts reometer to measure the corrosion current value that directly obtains the corrosion galvanic couple then.Yet, the shortcoming of prior art is: macro cell is measured and is generally had error, and the grand current value of measurement is less than actual value, so that the corrosion rate of iron and steel is underestimated, the corrosion risk of concrete reinforcement can not be accurately judged, thereby serious consequence might be caused.
The utility model content
In view of this, fundamental purpose of the present utility model is to provide a kind of electric current potential test device of macro cell, and it can accurately detect the grand current value of reinforcement corrosion, can measure the potential value after anode and negative electrode are coupled simultaneously.
For achieving the above object, the technical solution of the utility model is to realize like this, a kind of electric current potential test device of macro cell, it is characterized in that, comprise: the current measurement module that is used to measure the corrosion current of macro cell, be used to measure the voltage measurement module of the corrosion voltage of macro cell, described current measurement module connects voltage measurement module.
Described current measurement module comprises: by the zero resistance galvanometer that integrated transporting discharging-1, resistance R 1 are formed, R1 connects the negative pole and the output terminal of integrated transporting discharging-1, and the negative pole of integrated transporting discharging-1 connects the anodic site of corrosion cell, the anodal cathodic area that connects corrosion cell; By the signal amplifier that integrated transporting discharging-2, resistance R 2 and R3 form, R2 connects the output terminal of integrated transporting discharging-1 and the negative pole of integrated transporting discharging-2, and the positive pole of integrated transporting discharging-2 connects the cathodic area of corrosion cell, and R3 connects the negative pole and the output terminal of integrated transporting discharging-2.
Described current measurement module also comprises filter capacitor C1, and C1 connects the positive pole and the output terminal of integrated transporting discharging-2.
Described voltage measurement module comprises: integrated transporting discharging-3, its anodal R4 that connects, R4 connects the cathodic area of corrosion cell and the positive pole of integrated transporting discharging-2, and the negative pole of integrated transporting discharging-3 connects R5, R5 and is connected with contrast electrode, and the negative pole of integrated transporting discharging-3 is connected R6 with output terminal.
The utility model has following beneficial effect with respect to prior art:
Can accurately measure the current value of the macro cell of microampere order, reduce the error that macro cell is measured, because this value has directly related property with the corrosion speed of concrete reinforcing steel, thereby can further calculate the corrosion speed of concrete reinforcing steel, in addition, can obtain the corrosion potential of macro cell, auxiliary macro cell electric current is assessed the etch state of reinforcing bar.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, integrated transporting discharging-1, resistance R 1 are formed the zero resistance galvanometer, and R1 connects the negative pole and the output terminal of integrated transporting discharging-1, and the negative pole of integrated transporting discharging-1 connects the anodic site of corrosion cell, the anodal cathodic area that connects corrosion cell; The signal amplifier of forming by integrated transporting discharging-2, resistance R 2 and R3, R2 connects the output terminal of integrated transporting discharging-1 and the negative pole of integrated transporting discharging-2, the positive pole of integrated transporting discharging-2 connects the cathodic area of corrosion cell, and R3 connects the negative pole and the output terminal of integrated transporting discharging-2, adopts C1 as low-pass filtering.The anodic site of macro cell and the corrosion current between the cathodic area are I
Corr,, become voltage signal V1, V1=R1 * I through the zero resistance galvanometer
Corr, and then, becoming the voltage signal V2 that can gather through signal amplifier, V2=R3 * V1/R2 obtains: I
Corr=V2 * R2/ (R1 * R3).
The positive pole of integrated transporting discharging-3 connects R4, and R4 connects the cathodic area of corrosion cell and the positive pole of integrated transporting discharging-2, and the negative pole of integrated transporting discharging-3 connects R5, R5 and is connected with contrast electrode, and the negative pole of integrated transporting discharging-3 is connected R6 with output terminal.The corrosion potential Vc of macro cell, the voltage V3 of voltage signal output end output obtains: Vc=-V3 * R5/R6.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.
Claims (4)
1. the electric current potential test device of a macro cell is characterized in that, comprising:
Be used to measure the current measurement module of the corrosion current of macro cell, be used to measure the voltage measurement module of the corrosion voltage of macro cell, described current measurement module connects voltage measurement module.
2. the electric current potential test device of macro cell as claimed in claim 1 is characterized in that, described current measurement module comprises:
By the zero resistance galvanometer that integrated transporting discharging-1, resistance R 1 are formed, R1 connects the negative pole and the output terminal of integrated transporting discharging-1, and the negative pole of integrated transporting discharging-1 connects the anodic site of corrosion cell, the anodal cathodic area that connects corrosion cell;
By the signal amplifier that integrated transporting discharging-2, resistance R 2 and R3 form, R2 connects the output terminal of integrated transporting discharging-1 and the negative pole of integrated transporting discharging-2, and the positive pole of integrated transporting discharging-2 connects the cathodic area of corrosion cell, and R3 connects the negative pole and the output terminal of integrated transporting discharging-2.
3. the electric current potential test device of macro cell as claimed in claim 2 is characterized in that, described current measurement module also comprises filter capacitor C1, and C1 connects the positive pole and the output terminal of integrated transporting discharging-2.
4. the electric current potential test device of macro cell as claimed in claim 3, it is characterized in that, described voltage measurement module comprises: integrated transporting discharging-3, its anodal R4 that connects, R4 connects the cathodic area of corrosion cell and the positive pole of integrated transporting discharging-2, the negative pole of integrated transporting discharging-3 connects R5, R5 and is connected with contrast electrode, and the negative pole of integrated transporting discharging-3 is connected R6 with output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200538711U CN201965171U (en) | 2011-03-03 | 2011-03-03 | Measuring device for electric current potential of macro cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200538711U CN201965171U (en) | 2011-03-03 | 2011-03-03 | Measuring device for electric current potential of macro cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201965171U true CN201965171U (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200538711U Expired - Lifetime CN201965171U (en) | 2011-03-03 | 2011-03-03 | Measuring device for electric current potential of macro cell |
Country Status (1)
| Country | Link |
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| CN (1) | CN201965171U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777340A (en) * | 2014-12-31 | 2015-07-15 | 陈瑞武 | Circuit for testing standby current |
| CN105242095A (en) * | 2014-07-07 | 2016-01-13 | 德尔格医疗有限责任公司 | Device and method for detecting electric potentials |
| CN110186964A (en) * | 2019-04-26 | 2019-08-30 | 浙江大学 | A kind of device and method for testing the macro electric current of inside concrete reinforcement corrosion |
| CN110672506A (en) * | 2019-10-12 | 2020-01-10 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Potential automatic monitoring system for accelerated corrosion of steel bar in concrete |
-
2011
- 2011-03-03 CN CN2011200538711U patent/CN201965171U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242095A (en) * | 2014-07-07 | 2016-01-13 | 德尔格医疗有限责任公司 | Device and method for detecting electric potentials |
| CN105242095B (en) * | 2014-07-07 | 2019-02-15 | 德尔格制造股份两合公司 | The device and method for detecting current potential |
| US10542900B2 (en) | 2014-07-07 | 2020-01-28 | Drägerwerk AG & Co. KGaA | Device and method for detecting electric potentials |
| CN104777340A (en) * | 2014-12-31 | 2015-07-15 | 陈瑞武 | Circuit for testing standby current |
| CN110186964A (en) * | 2019-04-26 | 2019-08-30 | 浙江大学 | A kind of device and method for testing the macro electric current of inside concrete reinforcement corrosion |
| CN110186964B (en) * | 2019-04-26 | 2021-05-07 | 浙江大学 | Device and method for testing corrosion macro current of steel bar in concrete |
| CN110672506A (en) * | 2019-10-12 | 2020-01-10 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Potential automatic monitoring system for accelerated corrosion of steel bar in concrete |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100176, No. 5 building, No. 109, No. three, Hai Lu, Yizhuang economic and Technological Development Zone, Beijing, Daxing District Patentee after: Beijing Century Waterproof Hongyu Technology Co., Ltd. Address before: 100076, Beijing, Daxing District Town, West Village, Baita village, 1000 meters south Patentee before: Beijing Century Waterproof Hongyu Technology Co., Ltd. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Sun Kan Inventor before: Geng Chunlei |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |