CN103540938B - A kind of Multi-test-block polarization probe with pipeline cathodic protection - Google Patents
A kind of Multi-test-block polarization probe with pipeline cathodic protection Download PDFInfo
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- CN103540938B CN103540938B CN201210241339.1A CN201210241339A CN103540938B CN 103540938 B CN103540938 B CN 103540938B CN 201210241339 A CN201210241339 A CN 201210241339A CN 103540938 B CN103540938 B CN 103540938B
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Abstract
The present invention is a kind of Multi-test-block polarization probe with pipeline cathodic protection.There is the center that the exocoel of enclosing cover (5) (4) will have the inner chamber of inner cap (3) (2) to be enclosed within middle and lower part; Ionic conductive polymer (1) is fixed on inner chamber (2) bottom centre; Inner chamber (2) and inner cap (3) are coincide by screw thread and packing ring and seal; Exocoel (4) and enclosing cover (5) mechanical seal; Copper rod (6) inserts in inner chamber (2) from inner cap (3), and is sealed on inner cap (3); It is that cable (8) introduces exocoel (4) from enclosing cover (5) middle part; The test piece I (9) that lead-in wire II (10) in cable (8) and lead-in wire III (12) are connected respectively and test piece II (11) are arranged on the outside surface of exocoel (4) by screw thread and packing ring; Inner chamber (2) is built with copper/saturated copper sulphate solution (13).Present invention, avoiding the seepage loss of reference electrode solution, semi-permeable membranes blocking and the corrosion of electrode, the life-span is long, and the test piece area that polarizes is adjustable.
Description
Technical field
The present invention is a kind of Multi-test-block polarization probe with pipeline cathodic protection.Relate to tubing system technical field.
Background technology
At present; most of oil and gas pipes galvanic protection polarized probe adopts micropore ceramics semi-permeable membranes to be used for electrolytical conducting inside and outside reference electrode; this semi-permeable membranes allows solvent to pass through; under osmosis, through one section time, after date must cause the oxidation of the leakage even blocking of semi-permeable membranes of reference electrode solution, pollution and copper rod, finally causes polarized probe to lose efficacy.Although adopt the dual-chamber structure of large volume and particular fillers can alleviate this problem and extend the work-ing life of polarized probe, can not address this problem at all.In addition, the polarization test piece quantity of most of polarized probe and area are fixing, cannot meet the requirement of the galvanic protection efficiency evaluation under various condition, and polarization test piece multidigit, in the bottom of polarized probe, cannot guarantee the close contact of polarization test piece and soil.
CN201319014Y discloses a kind of polarization-testing probe; " coal gas and heating power " the 30th volume the 4th phase disclose one " polarized probe is in the application of buried steel pipeline galvanic protection "; CN2915885Y discloses a kind of buried type copper/cupric sulfate reference electrode, but their life-span is all undesirable.
Summary of the invention
The object of the invention is to invent and a kind ofly avoid the seepage loss of reference electrode solution, semi-permeable membranes to block and the burn into life-span of electrode is long, polarization test piece area is adjustable Multi-test-block polarization probe with pipeline cathodic protection.
The present invention is a kind of oil and gas pipes galvanic protection many test pieces polarized probe; use ionic conductive polymer; it can ionogen when impermeable water inside and outside conducting polarized probe reference electrode measure the current potential of polarized probe; the leakage of polarized probe reference electrode solution in the past, pollution and semi-permeable membranes blocking and the oxidation of copper rod can be avoided, ensure that the long-term effectiveness of polarized probe.Meanwhile, due to impermeable structure, polarized probe cavity volume can be made greatly to reduce.In addition, multiple polarization test pieces are arranged on the side of polarized probe shell, polarization test piece can higher than shell side, be conducive to itself and soil close contact, realized the adjustment of polarization area and break-make current potential by the quantity being connected to test piece that pipeline polarizes, the polarization test piece not being connected to pipeline is used for measuring spontaneous potential.
The present invention is made up of ionic conductive polymer 1, inner chamber 2, inner cap 3, exocoel 4, enclosing cover 5, copper rod 6, lead-in wire I 7, cable 8, test piece I 9, lead-in wire II 10, test piece II 11, lead-in wire III 12, copper/saturated copper sulphate solution 13.
There is the center that the exocoel 4 of enclosing cover 5 will have the inner chamber 2 of inner cap 3 to be enclosed within middle and lower part; Ionic conductive polymer 1 is fixed on inner chamber 2 bottom centre; Inner chamber 2 and inner cap 3 are coincide by screw thread and packing ring and seal; Exocoel 4 and enclosing cover 5 mechanical seal; Copper rod 6 inserts in inner chamber 2 from inner cap 3, and is sealed on inner cap 3; Cable 8 is introduced exocoel 4 in the middle part of enclosing cover 5; Cable 8 comprises lead-in wire I 7, lead-in wire II 10 and lead-in wire III 12; Go between and II 10 be arranged on the outside surface of exocoel 4 with the test pieces I 9 that are connected respectively of lead-in wire III 12 and test piece II 11 by screw thread and packing ring; Inner chamber 2 is built with copper/saturated copper sulphate solution 13.
Ionic conductive polymer 1 ensure that copper/saturated copper sulphate solution 13 also can measure current potential with the conducting of extraneous medium; Owing to there is not solution leakage, semi-permeable membranes blocking and copper rod etching problem, ensure that the long term life of polarized probe; In measuring process can by test piece I 9 and test piece II 11 separately or together be connected on pipeline and measure current potential, achieve polarization area adjustable.
Described ionic conductive polymer 1 has broad variety and preparation method, at home and abroad all existing commercialization finished product, and the present invention selects pipeline cathode protection flexible anode to prepare polarized probe with the conductive polymers of material as ionic conductive polymer;
Described inner cap 3 and enclosing cover 5 are the female lid in inner side;
Described inner chamber 2 has externally threaded cylinder for suitable for reading;
Described exocoel 4 be suitable for readingly have outside screw, there is internal thread hole side and the square tube of fairlead; Test piece II 11 is arranged on this internal thread hole, goes between to be connected in test piece II 11 by fairlead.
The Ionic conductivity material that the core of preparation Multi-test-block polarization probe with pipeline cathodic protection is to employ impermeable water is as the polarized probe structure design of ionogen conductive member and multipolarization test piece; Ionic conductivity material is not limited only to ionic conductive polymer, and metal oxide also can be adopted to be the solid electrolyte ceramic that matrix is fired; The reference electrode type of this galvanic protection many test pieces polarized probe is not limited only to copper/copper sulfate saturated solution reference electrode, is equally applicable to the reference electrode of other types; Many test block structures on polarized probe shell are not limited only to be installed on 1 side, are equally applicable to 4 sides and all install polarization test piece, and the quantity of polarization test piece can more than 8.
Beneficial effect of the present invention: the invention provides a kind of oil and gas pipes galvanic protection many test pieces polarized probe; use ionic conductive polymer; it can ionogen when impermeable water inside and outside conducting polarized probe reference electrode measure the current potential of polarized probe; the leakage of polarized probe reference electrode solution in the past, pollution and semi-permeable membranes blocking and the oxidation of copper rod can be avoided, ensure that the long-term effectiveness of polarized probe.Meanwhile, avoid the corrosion of the blocking of the seepage loss of reference electrode solution, semi-permeable membranes and electrode, the life-span is long, and polarization test piece area is adjustable.Due to impermeable structure, polarized probe cavity volume can be made greatly to reduce.In addition, multiple polarization test pieces are arranged on the side of polarized probe shell, polarization test piece can higher than shell side, be conducive to itself and soil close contact, realized the adjustment of polarization area and break-make current potential by the quantity being connected to test piece that pipeline polarizes, the polarization test piece not being connected to pipeline is used for measuring spontaneous potential.
The present invention is a kind of Multi-test-block polarization probe with pipeline cathodic protection, is applicable to detection and the long term monitoring of polarized probe break-make current potential and spontaneous potential in pipeline cathode protection measuring process.
Accompanying drawing explanation
Fig. 1 Multi-test-block polarization probe with pipeline cathodic protection pie graph
Fig. 2 Multi-test-block polarization probe with pipeline cathodic protection lead-in wire interface chart
Fig. 3 outer chamber side view
Fig. 4 exocoel front view
Fig. 5 exocoel is bowed sectional view
Embodiment
Embodiment. this example is an experimental prototype, and it is formed as shown in the figure.This example is made up of ionic conductive polymer 1, inner chamber 2, inner cap 3, exocoel 4, enclosing cover 5, copper rod 6, lead-in wire I 7, cable 8, test piece I 9, lead-in wire II 10, test piece II 11, lead-in wire III 12, copper/saturated copper sulphate solution 13.
There is the center that the exocoel 4 of enclosing cover 5 will have the inner chamber 2 of inner cap 3 to be enclosed within middle and lower part; Ionic conductive polymer 1 is fixed on inner chamber 2 bottom centre; Inner chamber 2 and inner cap 3 are coincide by screw thread and packing ring and seal; Exocoel 4 and enclosing cover 5 mechanical seal; Copper rod 6 inserts in inner chamber 2 from inner cap 3, and is sealed on inner cap 3; Cable 8 is introduced exocoel 4 in the middle part of enclosing cover 5; Cable 8 comprises lead-in wire I 7, lead-in wire II 10 and lead-in wire III 12; Go between and II 10 be arranged on the outside surface of exocoel 4 with the test pieces I 9 that are connected respectively of lead-in wire III 12 and test piece II 11 by screw thread and packing ring; Inner chamber 2 is built with copper/saturated copper sulphate solution 13.
Wherein:
Ionic conductive polymer 1 adopts certain import conducting polymer materials, 2 cm long, 8 mm dia post-like conductive polymkeric substance;
Polarized probe is inside and outside dual-chamber structure, and exocoel 4 adopts polyvinyl chloride to make the square tube shape of length of side 60mm, high 100mm, the through hole that there is the internal thread of 2 M10 each side, the center of internal thread hole is Ф 5mm; Inner chamber 2 adopts polyvinyl chloride to make Ф 40mm, the drum of high 80mm, bucket wall thickness 2mm, the outside screw having M40mm suitable for reading;
Polarization test piece I 9, test piece II 11 are for there being the externally threaded disk of M10mm, and its back side is connected to lead-in wire II 10, lead-in wire III 12 successively;
Go between I 7, lead-in wire II 10 and lead-in wire 12 converge into 9 core cables 8;
Enclosing cover 5 is the quad seal lid of length of side 60mm;
Inner cap 3 is the lid having M40mm internal thread suitable for reading;
Copper rod 6 is Ф 2 × 60mm red copper bar.
This example is through test, and this pipeline cathode protection multipolarization test piece probe avoids the seepage loss of reference electrode solution, semi-permeable membranes blocking and the corrosion of electrode, and the life-span of probe is long.Polarization test piece contacts well with soil, and polarization area is adjustable, meets the requirement of long-term potential monitoring.
Claims (5)
1. a Multi-test-block polarization probe with pipeline cathodic protection, is characterized in that it is made up of ionic conductive polymer (1), inner chamber (2), inner cap (3), exocoel (4), enclosing cover (5), copper rod (6), lead-in wire I (7), cable (8), test piece I (9), lead-in wire II (10), test piece II (11), lead-in wire III (12), copper/saturated copper sulphate solution (13);
There is the center that the exocoel of enclosing cover (5) (4) will have the inner chamber of inner cap (3) (2) to be enclosed within middle and lower part; Ionic conductive polymer (1) is fixed on inner chamber (2) bottom centre; Inner chamber (2) and inner cap (3) are coincide by screw thread and packing ring and seal; Exocoel (4) and enclosing cover (5) mechanical seal; Copper rod (6) inserts in inner chamber (2) from inner cap (3), and is sealed on inner cap (3); It is that cable (8) introduces exocoel (4) from enclosing cover (5) middle part; Cable (8) comprises lead-in wire I (7), lead-in wire II (10) and lead-in wire III (12); The test piece I (9) that lead-in wire II (10) and lead-in wire III (12) are connected respectively and test piece II (11) are arranged on the outside surface of exocoel (4) by screw thread and packing ring; Inner chamber (2) is built with copper/saturated copper sulphate solution (13).
2. a kind of Multi-test-block polarization probe with pipeline cathodic protection according to claim 1, is characterized in that described ionic conductive polymer (1) selects pipeline cathode protection flexible anode to prepare polarized probe with the conductive polymers of material as ionic conductive polymer.
3. a kind of Multi-test-block polarization probe with pipeline cathodic protection according to claim 1, is characterized in that described inner cap (3) and enclosing cover (5) are the female lid in inner side.
4. a kind of Multi-test-block polarization probe with pipeline cathodic protection according to claim 1, is characterized in that described inner chamber (2) has externally threaded cylinder for suitable for reading.
5. a kind of Multi-test-block polarization probe with pipeline cathodic protection according to claim 1, it is characterized in that described exocoel (4) for suitable for readingly having outside screw, there is internal thread hole side and the square tube of fairlead; Test piece II (11) is arranged on this internal thread hole, goes between to be connected in test piece II (11) by fairlead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241339.1A CN103540938B (en) | 2012-07-12 | 2012-07-12 | A kind of Multi-test-block polarization probe with pipeline cathodic protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241339.1A CN103540938B (en) | 2012-07-12 | 2012-07-12 | A kind of Multi-test-block polarization probe with pipeline cathodic protection |
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| Publication Number | Publication Date |
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| CN103540938A CN103540938A (en) | 2014-01-29 |
| CN103540938B true CN103540938B (en) | 2015-08-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109402641B (en) * | 2017-08-16 | 2021-01-01 | 中国石油天然气股份有限公司 | Testing device for pipeline cathodic protection potential inspection sheet and preparation method thereof |
| CN109082671B (en) * | 2018-10-30 | 2020-08-18 | 广州发展集团股份有限公司 | Cathodic protection potential detection device and cathodic protection potential monitoring system |
Citations (4)
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|---|---|---|---|---|
| CN201319014Y (en) * | 2008-07-21 | 2009-09-30 | 陈嘉兴 | Polarization-testing probe |
| CN202126385U (en) * | 2011-06-09 | 2012-01-25 | 福建畅联电子有限公司 | Polarization test probe |
| CN102353628A (en) * | 2011-07-22 | 2012-02-15 | 北京科技大学 | Polarization testing probe and testing method for cathodic protection of underground steel pipelines |
| CN202744632U (en) * | 2012-07-12 | 2013-02-20 | 中国石油天然气股份有限公司 | Multi-test-block polarized probe for pipeline cathodic protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4767145B2 (en) * | 2006-10-16 | 2011-09-07 | 東京瓦斯株式会社 | Cathodic protection system and cathodic protection method by galvanic anode method, pipeline soundness evaluation system and soundness evaluation method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319014Y (en) * | 2008-07-21 | 2009-09-30 | 陈嘉兴 | Polarization-testing probe |
| CN202126385U (en) * | 2011-06-09 | 2012-01-25 | 福建畅联电子有限公司 | Polarization test probe |
| CN102353628A (en) * | 2011-07-22 | 2012-02-15 | 北京科技大学 | Polarization testing probe and testing method for cathodic protection of underground steel pipelines |
| CN202744632U (en) * | 2012-07-12 | 2013-02-20 | 中国石油天然气股份有限公司 | Multi-test-block polarized probe for pipeline cathodic protection |
Non-Patent Citations (1)
| Title |
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| 极化探头在埋地钢质管道阴极保护的应用;杨义军等;《燃气与动力》;20100430;第30卷(第4期);第24－27页 * |
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Effective date of registration: 20211109 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PETROCHINA Co.,Ltd. |
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