CN101738368B - Concrete pipe cathode protection testing probe and testing method - Google Patents
Concrete pipe cathode protection testing probe and testing method Download PDFInfo
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- CN101738368B CN101738368B CN200810181240A CN200810181240A CN101738368B CN 101738368 B CN101738368 B CN 101738368B CN 200810181240 A CN200810181240 A CN 200810181240A CN 200810181240 A CN200810181240 A CN 200810181240A CN 101738368 B CN101738368 B CN 101738368B
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- 239000004567 concrete Substances 0.000 title claims abstract description 93
- 239000000523 sample Substances 0.000 title claims abstract description 71
- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 97
- 239000010959 steel Substances 0.000 claims abstract description 97
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000004210 cathodic protection Methods 0.000 claims description 28
- 238000005260 corrosion Methods 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 17
- 230000002269 spontaneous effect Effects 0.000 claims description 15
- 238000004088 simulation Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000010998 test method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002322 conducting polymer Substances 0.000 claims description 2
- 229920001940 conductive polymer Polymers 0.000 claims description 2
- 229910003455 mixed metal oxide Inorganic materials 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 11
- 230000010287 polarization Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000000840 electrochemical analysis Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a PCCP pipe cathode protection testing probe and a testing method. The probe comprises a concrete structure body, a first steel wire, a reference electrode, an auxiliary electrode, a plurality of cables and an outer protection layer. The concrete structure body simulates a concrete core of a PCCP pipe. The first steel wire, the reference electrode and the auxiliary electrode which are separated from one another in a non-stress state are arranged in the concrete structure body. The structure body is wound with a second steel wire in a stress state. The prestress applied on the second steel wire is greater than or equal to the prestress applied on the steel wire arranged in the simulated pipe. The second steel wire and the prestressed steel wire in the PCCP pipe adopt the same material. The plurality of cables comprise a first steel wire cable, a second steel wire cable, a reference electrode cable and an auxiliary electrode cable. One end of the corresponding cable is electrically connected with the first steel wire, the second steel wire, the reference electrode and the auxiliary electrode respectively. The other end of each cable extends out of the concrete structure body. The outer protection layer is covered on the surface of the concrete structure body and the concrete structure body, the first steel wire and the outer protection layer are all made of the same material as that of the simulated PCCP pipe.
Description
Invention field
The present invention relates to cathodic protection detection technique field; Be particularly related to concrete pipe cathode protection testing probe and method of testing, be mainly used in parameters such as the spontaneous potential of measuring concrete pipe steel wire (particularly PCCP pipe and reinforced concrete structure compressor wire), cathodic protection polarized potential, corrosion rate, polarization characteristic.
Background technology
Prestressed concrete cylinder pipe (being called for short PCCP) is the novel tube material that grows up domestic nearly more than ten years.It has been gathered raw and auxiliary materials such as steel plate, high-strength prestressed steel wire, high-strength concrete, high-strength mortar and rubber seal and has been made, and is a kind of compound tubing that possesses high strength, high permeability resistant and high leakproofness.Owing to possess plurality of advantages, the application of PCCP tubing in water delivery engineering is increasing.South water to north center line Beijing section promptly adopts 56 kilometers PCCP pipelines.In order to reduce the corrosion failure of inner steel cylinder and compressor wire in the PCCP pipeline operational process to greatest extent, increase the service life, need take coating and cathodic protection anti-corrosion measure.In order to judge the cathodic protection effect; Need obtain measurement data accurately, because the architectural feature of PCCP pipe makes PCCP tube cathode protection effect judge and has following problem: judge the 100mV polarization criterion of stipulating in the NACE RP0100-2004 standard accurately; Need to obtain cathodic polarization potential and spontaneous potential; And after the energising of PCCP cathodic protection system, the spontaneous potential accurately that is difficult to reentry, this brings difficulty with regard to the judgement of giving this criterion.Concrete architectural feature simultaneously, it is bigger to make that IR in the test of PCCP tube cathode protection potential falls, and influence the accuracy of cathodic protection effect judgement.For reinforced concrete structure; External practice and relevant criterion (NACE TM0497, NACE RP0104) require in the cathodic protection test must employing with by the protective structure probe identical with material; Otherwise be difficult to measure real cathodic protection potential, the present domestic cathode protection testing probe that is exclusively used in xoncrete structure that still do not have.And traditional steel pipe can't measure the spontaneous potential of steel wire with test probe; Can't simulate the concrete environment of PCCP pipeline; Can't simulate also that compressor wire bears certain stress state among the PCCP, therefore can't satisfy the requirement of PCCP cathodic protection test.PCCP cathodic protection measuring technology is still blank at home at present.In the big artificial river conservancy worker's journey of Libya, attempted the work aspect the concrete test probe, owing to receive the restriction of sonde configuration and inner reference, the test effect is unsatisfactory.Novelty assessment report points out still not have at present the PCCP of being exclusively used in pipeline both at home and abroad, can measure the cathode protection testing probe of cathodic protection potential and spontaneous potential simultaneously.Along with the application of PCCP pipeline is increasing, the exploitation of PCCP cathode protection testing probe also becomes an extremely urgent job.
Simultaneously, in common concrete pipe cathodic protection measuring technology,, exist IR to fall big, cathodic protection effect in the potential test equally and judge inaccurate problem because what adopt at present all is the mode of simple test pieces.
Summary of the invention
The technical matters that will solve of the present invention is to overcome the problem that exists in the above-mentioned prior art; A kind of steel wire in the concrete pipe of measuring effectively is provided; The cathode protection testing probe of spontaneous potential, cathodic protection polarized potential and other corrosion parameters of compressor wire during particularly PCCP manages; And a kind of method of testing, obtain the cathode protecting parameter of compressor wire through test probe, thereby judge the cathodic protection level that is reached.
For realizing above-mentioned purpose, the invention provides a kind of concrete pipe cathode protection testing probe, this probe is used for the running status of mould concrete pipe, and this probe comprises: concrete body, the concrete core of simulation concrete pipe; First steel wire, contrast electrode and the auxiliary electrode that are in unstress state that is spaced apart from each other is set on concrete body; Many cables comprise first steel wire cable, contrast electrode cable and auxiliary electrode cable, and an end of respective cable links to each other with corresponding first steel wire, contrast electrode and auxiliary electrode are electric respectively, and the other end of each cable stretches out from concrete body; Outer jacket covers the xoncrete structure surface; Said concrete body, first steel wire, outer jacket all adopt the simulation concrete pipe identical materials with institute.
According to an aspect of the present invention; Concrete pipe is the PCCP pipe; Twine second steel wire that is in stress state on the concrete body of said probe; The prestress that this second steel wire is born is more than or equal to the prestress that steel wire bore in the PCCP that the simulated pipe, and second steel wire is identical with the material of the compressor wire that PCCP manages, and with the spaced apart setting of first steel wire, contrast electrode and auxiliary electrode.Many cables also comprise second steel wire cable, and the one of which end links to each other with second steel wire, and it is external that the other end stretches out xoncrete structure.
The invention provides a kind of PCCP tube cathode protection test probe, this probe is used to simulate the running status of PCCP pipe, and this probe comprises: concrete body, the concrete core of simulation PCCP pipe; First steel wire, contrast electrode and the auxiliary electrode that are in unstress state that is spaced apart from each other is set in concrete body; Twine second steel wire that is in stress state on the concrete body of said probe; The prestress that steel wire bore during the prestress that this second steel wire is born was managed more than or equal to the PCCP that is simulated; The material of the compressor wire of second steel wire and PCCP pipe is identical, and with the spaced apart setting of first steel wire, contrast electrode and auxiliary electrode; This probe also comprises many cables; Comprise first steel wire cable, second steel wire cable, contrast electrode cable and auxiliary electrode cable; One end of respective cable links to each other with the first corresponding steel wire, second steel wire, contrast electrode and auxiliary electrode are electric respectively, and the other end of each cable stretches out from concrete body; Outer jacket covers the xoncrete structure surface; Said concrete body, first steel wire, outer jacket all adopt with the PCCP that simulates of institute and manage identical materials.
The present invention also provides a kind of method of testing cathodic protection effect in the concrete pipe operational process; May further comprise the steps: the structure of (1) simulation concrete pipe forms concrete pipe cathode protection testing probe; First steel wire, contrast electrode and the auxiliary electrode of unstress state are set in this probe, and first steel wire, contrast electrode and auxiliary electrode are electrically connected with extraneous through cable respectively; (2) the concrete cathode protection testing probe is provided with under near working environment identical institute's simulation concrete pipe; (3) cable of concrete cathode protection testing probe links to each other with detective pole, can obtain spontaneous potential, cathodic protection polarized potential, the corrosion rate of concrete pipe steel wire through measuring, thereby the validity of concrete pipe cathode protection system is made judgement.
The present invention also provides the method for cathodic protection effect in a kind of PCCP of test pipe operational process, may further comprise the steps: the structure of (1) simulation PCCP pipe forms as aforesaid PCCP tube cathode protection test probe; (2) protect the test probe setting with under near working environment identical the simulation PCCP pipe PCCP tube cathode; (3) cable of PCCP tube cathode protection test probe links to each other with detective pole, can obtain spontaneous potential, cathodic protection polarized potential, the corrosion rate that PCCP manages steel wire through measuring, thereby the validity of PCCP tube cathode protection system is made judgement.
Cathode protection testing probe of the present invention is structurally close with the concrete duct of being simulated, and particularly under the situation of simulation PCCP pipe, can simulate in the PCCP pipe the residing concrete environment of compressor wire and bear certain stress state.Cathode protection testing probe of the present invention adopts nearly reference measuring technology, and the IR that eliminates in the potential measurement process falls.The embedded contrast electrode that is adopted should guarantee the stability of current potential in the concrete environment and the accuracy of measurement.Parameters such as the spontaneous potential of inner compressor wire, cathodic protection potential, corrosion electric current density, corrosion rate when this cathode protection testing probe can be measured PCCP pipe accurately and passes through the soil environment of different rerum naturas.In addition, PCCP cathode protection testing probe processing technology thereof scheme of the present invention is feasible, and quality is easy to control, is convenient to produce in batches.
Description of drawings
Fig. 1 is the synoptic diagram of concrete pipe cathode protection testing probe one embodiment of the present invention;
Fig. 2 is the synoptic diagram of another embodiment of PCCP tube cathode protection test probe of the present invention;
Fig. 3 is the synoptic diagram of the another embodiment of concrete pipe cathode protection testing probe of the present invention.
Embodiment
To combine accompanying drawing below is that example is described the present invention in detail with the specific embodiment.But, the scope that these embodiment do not limit the present invention in any way.
As shown in Figure 1, concrete pipe test probe 1 of the present invention has the structure similar with the concrete pipe of being simulated, and promptly comprises concrete body 10 and at the external outer jacket 11 of xoncrete structure.Concrete body is by concrete material vibrating compacting in mould, and forms through demoulding maintenance, has intensity.In can be, also can have the steel wire (not shown in figure 1) as common concrete pipe for right cylinder, cube or rectangular parallelepiped concrete body 10.First steel wire 12, contrast electrode 13 and the auxiliary electrode 14 that are in unstress state that in addition, can adopt any known mode in this area in concrete body, to be provided with to be spaced apart from each other.One preferred embodiment in, can on the periphery of concrete body, form isolated three recesses, as through grooving 15,15 ', 15 " mode form, first steel wire 12, contrast electrode 13 and auxiliary electrode 14 are arranged in the corresponding concave part.In order to keep the stability of contrast electrode, add the filler of preserving moisture that absorbs water near the first end of the test of contrast electrode 13.First steel wire 12, contrast electrode 13 and auxiliary electrode 14 are electrically connected through welding or mechanical grip mode with corresponding cable 16,17,18 respectively, and can carry out insulating corrosion at connecting portion and handle.These cables finally extend concrete body 10, can link to each other with the detective pole that is arranged on ground.
The tester can utilize existing potential measurement instrument and electro-chemical test system to test.Cable through cable that the potential measurement instrument is connected contrast electrode respectively and first steel wire that links to each other with the concrete pipe steel wire of being simulated records the cathodic protection polarized potential; The cable that the potential measurement instrument is connected the cable of contrast electrode and first steel wire that does not link to each other with the concrete pipe steel wire of being simulated respectively records spontaneous potential; And the three-electrode system of the cable formation of the cable of the cable through the electro-chemical test system being connected contrast electrode and first steel wire and impressed current anode records the polarization curve of steel wire in varying environment; Can get its corrosive property according to polarization curve, comprise from corrosion electric current density, corrosion rate etc.Can make judgement to the validity of the concrete pipe cathode protection system that simulated of probe by The above results.
For convenient measurement, a preferred example that is used for the probe of common concrete pipe, first steel wire can comprise two sections, and promptly first section and second section, this two section first steel wire is intervally installed and has cable separately.The potential measurement instrument can connect the cable of first section steel wire and the cable of contrast electrode comes the spontaneous potential of measuring steel wire.Simultaneously, the cable of second section steel wire can link to each other with the steel wire cable of measured concrete pipe.The current potential instrument can be measured second section cable and the cable of contrast electrode obtains the cathodic protection polarized potential.
In the present invention's embodiment shown in Figure 3; End at probe forms cavity 20; Be contained in the cavity 20 with the through hole 22 (as shown in Figure 1) that cable 16,17,18 that first steel wire 12, contrast electrode 13 link to each other with auxiliary electrode 14 forms on concrete body respectively, can seal by the filling epoxy curing agent in the cavity.The cable that extends concrete body at last can be contained in the cable collar 21.
Above-mentioned contrast electrode and auxiliary electrode can adopt electrode well known in the art.In more preferred example, contrast electrode is selected manganese dioxide reference electrode for use.Auxiliary electrode adopts mixed-metal oxides impressed current anode, conducting polymer impressed current anode or carbon-point impressed current anode.
In another scheme of the present invention as shown in Figure 2, concrete pipe is the PCCP pipe, twines second steel wire 30 that is in stress state on the concrete body of probe.According to the specification of concrete body, adopt the bending mould of different size that second steel wire 30 is carried out bending machining, can not carry out any thermal treatment in the BENDING PROCESS, can not destroy material property.The prestress that this second steel wire is born is more than or equal to the prestress that steel wire bore in the PCCP pipe of being simulated, and second steel wire is identical with the material of the compressor wire of PCCP pipe, and spaced apart with first steel wire, contrast electrode and auxiliary electrode.Second steel wire 30 links to each other with second steel wire cable 31.The other end of second steel wire cable 31 stretches out as other cable that xoncrete structure is external to link to each other with detective pole, as being contained in the cavity of concrete body through through hole 32.Others shown in Figure 2 can be identical with aforesaid embodiment.
The tester can utilize existing potential measurement instrument and electro-chemical test system to test.Cable through cable that the potential measurement instrument is connected contrast electrode respectively and first steel wire that links to each other with the PCCP pipe steel wire of being simulated records the cathodic protection polarized potential; The potential measurement instrument is connected the cable of second steel wire respectively and the cable of contrast electrode records spontaneous potential; And the three-electrode system of the cable formation of the cable of the cable through the electro-chemical test system being connected contrast electrode and first steel wire and impressed current anode records the polarization curve of steel wire in varying environment; Can get its corrosive property according to polarization curve, comprise from corrosion electric current density, corrosion rate etc.Can make judgement to the validity of the PCCP tube cathode protection system that simulated of probe by The above results.
Therefore, the project organization of this PCCP cathode protection testing probe embodiment possesses following function:
1. can measure PCCP and manage when passing through the soil environment of different rerum naturas the spontaneous potential of compressor wire;
2. can measure apply cathodic protection after, the cathodic protection polarized potential of compressor wire in the PCCP pipe;
3. can simulate the residing stress state of steel wire in the PCCP pipe;
4. PCCP be can measure and the corrosion polarization curve of compressor wire, corrosion rate etc. managed when passing through the soil environment of different rerum naturas.
The instance that forms PCCP cathode protection testing probe of the present invention is described below, further specifies characteristics of the present invention:
Instance:
(1) processing and fabricating the concrete core mould, the concrete core diameter that will make be 150mm, highly be 300mm, inside be a diameter 75mm, high 150mm cylindrical cavity;
(2), set up concrete vibrational structure compacting stand according to the mechanical property demand of concrete sonde configuration.Cement, sand and the stone of certain proportioning are packed in the mould, in shaking table internal vibration compacting, through the demoulding behind the certain hour;
(3) set up the concrete core fog room of constant temperature and humidity, concrete core is placed on carries out maintenance in the fog room, up to reaching desired intensity;
(4) be that the compressor wire of 5mm carries out bending operation to diameter, form compressor wire planform in the concrete.It should be noted that in order not destroy material property, can not carry out any thermal treatment in the BENDING PROCESS.
(5) groove of three different sizes of machining on concrete column is to put into contrast electrode, working electrode and auxiliary electrode.And on concrete wall, hole, so that passing concrete wall, stretches out cable connection from the probe top.
(6) put into contrast electrode, working electrode and auxiliary electrode in the groove that on concrete column, cuts respectively,, increase the high filler of preserving moisture that absorbs water at its head position for preventing the contrast electrode neat head.Cable is linked to each other with the compressor wire of case of bending, compressor wire, contrast electrode and working electrode from etch state respectively, connect the back and carry out the logical test of electricity with multimeter, joint area will guarantee enough firmly, and the employing heat shrink sleeve insulate.The aperture that cable connection passes on the concrete wall stretches out in the pouched at probe top, then toward the interior infusion epoxy resin hardening agent of pouched, makes cable pass position sealing and insulation.
(7) installing contrast electrode, working electrode, auxiliary electrode, after the completion cable connected, the gunite overlayer in the probe outside treated promptly to obtain after overlayer solidifies operable PSC probe.
A plurality of probes as above are set in the laying scope of pipeline, just can be well understood to the steel wire corrosion and the cathode protection condition of whole pipeline.
In the present invention, the concrete main body structure of probe, first and second steel wires, outer jacket are all selected for use and concrete pipe of being simulated or PCCP pipe identical materials.
Although the present invention has been described with reference to preferred embodiment; But the present invention is not limited to this; Under the prerequisite that does not break away from the present invention's spirit and essence; Those of ordinary skill in the art can carry out the distortion and the change of various equivalences to the present invention, and these distortion and change are all in covering scope of the present invention.
Claims (15)
1. a PCCP tube cathode is protected test probe, and this probe is used to simulate the running status of PCCP pipe, and this probe comprises:
Concrete body, the concrete core of simulation PCCP pipe;
First steel wire, contrast electrode and the auxiliary electrode that are in unstress state that is spaced apart from each other is set in concrete body;
Twine second steel wire that is in stress state on the concrete body of said probe; The prestress that steel wire bore during the prestress that this second steel wire is born was managed more than or equal to the PCCP that is simulated; The material of the compressor wire of second steel wire and PCCP pipe is identical, and with the spaced apart setting of first steel wire, contrast electrode and auxiliary electrode;
This probe also comprises many cables; Comprise first steel wire cable, second steel wire cable, contrast electrode cable and auxiliary electrode cable; One end of respective cable links to each other with the first corresponding steel wire, second steel wire, contrast electrode and auxiliary electrode are electric respectively, and the other end of each cable stretches out from concrete body;
Outer jacket covers the xoncrete structure surface;
Said concrete body, first steel wire, outer jacket all adopt with the PCCP that simulates of institute and manage identical materials.
2. according to the described PCCP tube cathode protection of claim 1 test probe; It is characterized in that; An end at said concrete body has cavity, and said many cables are received within the said cavity and from said cavity and stretch out, and fills the insulated enclosure packing material in the said cavity.
3. according to the described PCCP tube cathode protection of claim 1 test probe, it is characterized in that said many cable holding are in a cable collar.
4. according to the described PCCP tube cathode protection of claim 1 test probe, it is characterized in that, on the outer peripheral face of concrete body, form three recesses, said first steel wire, contrast electrode and auxiliary electrode are set respectively in recess.
5. according to the described PCCP tube cathode of claim 4 protection test probe, it is characterized in that said recess is a groove, laterally arrange with the winding direction of second steel wire.
6. according to the described PCCP tube cathode protection of claim 1 test probe, it is characterized in that concrete body is by concrete material vibrating compacting in mould, and form to have intensity through demoulding maintenance.
7. according to the described PCCP tube cathode protection of claim 1 test probe, it is characterized in that concrete body is right cylinder or rectangular parallelepiped.
8. according to the described PCCP tube cathode protection of claim 1 test probe, it is characterized in that concrete body is a cube.
9. according to the described PCCP tube cathode protection of claim 1 test probe, it is characterized in that first steel wire, contrast electrode and auxiliary electrode are electrically connected through welding or mechanical grip mode with cable respectively, and carry out insulating corrosion at connecting portion and handle.
10. according to the described PCCP tube cathode protection of claim 1 test probe; It is characterized in that; Being twined second steel wire be in pre-stressed state adopts the bending mould of different size that second steel wire is carried out bending machining according to the specification of concrete body; Do not heat-treat in the BENDING PROCESS, do not destroy material property.
11., it is characterized in that said contrast electrode is selected manganese dioxide reference electrode according to the described PCCP tube cathode protection of claim 1 test probe.
12. according to the described PCCP tube cathode protection of claim 4 test probe, it is characterized in that, add the filler of preserving moisture that absorbs water near the first end of the test of contrast electrode.
13., it is characterized in that said auxiliary electrode adopts mixed-metal oxides impressed current anode, conducting polymer impressed current anode or carbon-point impressed current anode according to the described PCCP tube cathode protection of claim 1 test probe.
14. according to the described PCCP tube cathode protection of claim 1 test probe; It is characterized in that; Said first steel wire comprises first section of being used to test spontaneous potential and is used to test second section of cathodic protection polarized potential, and first section and second section has cable separately and be spaced apart from each other.
15. a method of testing cathodic protection effect in the PCCP pipe operational process may further comprise the steps:
(1) structure of simulation PCCP pipe forms like each described PCCP tube cathode protection test probe among the claim 1-14;
(2) protect the test probe setting with under near working environment identical the simulation PCCP pipe PCCP tube cathode;
(3) cable of PCCP tube cathode protection test probe links to each other with detective pole, can obtain spontaneous potential, cathodic protection polarized potential, the corrosion rate that PCCP manages steel wire through measuring, thereby the validity of PCCP tube cathode protection system is made judgement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810181240A CN101738368B (en) | 2008-11-18 | 2008-11-18 | Concrete pipe cathode protection testing probe and testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810181240A CN101738368B (en) | 2008-11-18 | 2008-11-18 | Concrete pipe cathode protection testing probe and testing method |
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| CN101738368A CN101738368A (en) | 2010-06-16 |
| CN101738368B true CN101738368B (en) | 2012-10-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103063566A (en) * | 2011-10-20 | 2013-04-24 | 中国石油化工股份有限公司 | Stress corrosion cracking on-line monitoring probe |
| CN104005032B (en) * | 2014-05-08 | 2016-08-24 | 青岛双瑞海洋环境工程股份有限公司 | The cathode protection testing probe in Prestressed concrete cylinder pipe road and preparation method |
| CN109328306B (en) * | 2016-06-29 | 2021-11-23 | 阿尔法能源技术公司 | Mineral insulated combined flux ring and B-DOT wire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0486057A2 (en) * | 1990-11-16 | 1992-05-20 | Oronzio De Nora S.A. | Permanent reference electrode for monitoring the electrochemical potential of metal structures in concrete and soil |
| US5225058A (en) * | 1990-02-26 | 1993-07-06 | Nuova Polmet Cathodic Protection S.R.L. | Control and automatic regulation device for cathodic protection systems in reinforced concrete structures |
| CN101144769A (en) * | 2007-09-29 | 2008-03-19 | 哈尔滨工业大学 | Five electrode steel bar corrosion monitoring sensor and its preparation method |
| CN201347454Y (en) * | 2008-11-18 | 2009-11-18 | 北京市水利规划设计研究院 | Cathodic protection test probe for concrete pipe |
-
2008
- 2008-11-18 CN CN200810181240A patent/CN101738368B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5225058A (en) * | 1990-02-26 | 1993-07-06 | Nuova Polmet Cathodic Protection S.R.L. | Control and automatic regulation device for cathodic protection systems in reinforced concrete structures |
| EP0486057A2 (en) * | 1990-11-16 | 1992-05-20 | Oronzio De Nora S.A. | Permanent reference electrode for monitoring the electrochemical potential of metal structures in concrete and soil |
| CN101144769A (en) * | 2007-09-29 | 2008-03-19 | 哈尔滨工业大学 | Five electrode steel bar corrosion monitoring sensor and its preparation method |
| CN201347454Y (en) * | 2008-11-18 | 2009-11-18 | 北京市水利规划设计研究院 | Cathodic protection test probe for concrete pipe |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-128734A 2008.06.05 |
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| CN101738368A (en) | 2010-06-16 |
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