CN203630213U - Stray current detector for embedded metal pipeline - Google Patents
Stray current detector for embedded metal pipeline Download PDFInfo
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- CN203630213U CN203630213U CN201320850260.9U CN201320850260U CN203630213U CN 203630213 U CN203630213 U CN 203630213U CN 201320850260 U CN201320850260 U CN 201320850260U CN 203630213 U CN203630213 U CN 203630213U
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Abstract
The utility model discloses a stray current detector for embedded metal pipeline, which belongs to the technical field of embedded pipeline protection. The technical solution of the stray current detector for the embedded metal pipeline is characterized in that: the stray current detector for the embedded metal pipeline comprises a main controller, a data memory, a data display device and a data processor, wherein the data memory, the data display device and the data processor are respectively connected with the main controller; the input end of the main controller is connected with a data detecting unit; the data detecting unit is composed of a GPS timing module, a data acquiring module and a data conversion module; and the GPS timing module, the data acquiring module and the data conversion module are successively connected for forming a signal acquiring transmission channel. The stray current detector for the embedded metal pipeline is advantageous in that: introducing a GPS synchronous acquiring function, simultaneously measuring data of DC voltage and AC voltage of a plurality of channels, performing analysis processing on the synchronously acquired data, and accurately determining position and size of a stray current interference source.
Description
Technical field
The utility model belongs to buried pipeline protection technology field, is specifically related to a kind of buried metal pipeline Detector for Stray Currents.
Background technology
Along with the fast development of China's economy, pipe-line construction development rapidly, buried pipeline, comprise oil pipeline, gas pipeline and various drainage pipeline, the overwhelming majority is metallic conduit, and stray current corrosion has material impact to buried pipeline, it is dozens or even hundreds of times of spontaneous corrosion, the detection that buried pipeline stray current is disturbed, is the outer important content detecting of pipeline, is also the requirement (TSG D7001-2008 " long defeated (oil gas) pipeline periodic inspection rule " etc.) of national standard rules simultaneously.
Along with the application and development of power technology, electric railway, AC and DC high voltage power transmisson system etc. can produce stray current, the corrosion that stray current causes is called stray current corrosion, a kind of electrochemical reaction in essence, along with the growing and high voltage electric power equip ment of electric railway and the Large scale construction of city cellular base station, in the earth, extensively exist stray current, the corrosion of consequent buried metal pipeline is also more and more stronger; Therefore, buried metal pipeline AC and DC stray current disturbed test technology is more and more subject to people's attention.
At present, varied for the detector of stray current both at home and abroad, its technical parameter and price are also uneven, the RD-SCM that external product is produced take Radiodetection Limited is as representative, this equipment, aspect sampling precision, sample frequency and synchronous acquisition, all have absolute superiority, but it is expensive, and although domestic existing Detector for Stray Currents price is cheap, the following problem of detection technique method ubiquity realizing:
1, sample frequency is single.At present, domestic stray current detecting device has all adopted a sample frequency (50HZ) when disturbed test to exchanging, but, a stray current interference source, conventionally a more than a-c cycle, contain direct current, multiple alternating component in interior sophisticated signal source and may be one, single sample frequency affects the integrality of testing result.
2, acquisition time can not be synchronous.It is to gather by different passages that direct current disturbs from exchanging interference, although reached the requirement of independent image data, but due to can not synchronous acquisition, also make two kinds of relations between signal have no way of evaluating, be disturbed degree and pipe-to-soil potential feature and distribution in order to understand in detail pipeline, need multiple test point test jobs start simultaneously and finish, and with identical reading duration interval record data, to realize the Synchronization Analysis that detects data, all unrealized this functions of domestic known checkout equipment at present, external as the data acquisition unit in DCVG, DATALOG has good synchronizing function, but, it only has a passage, and can only gather direct current signal, frequency acquisition is 1HZ.
Utility model content
The technical problems to be solved in the utility model is: the shortcoming existing for prior art, provides a kind of Detector for Stray Currents to the different AC compounent of buried metal pipeline or DC component synchronous acquisition.
The present utility model thought is: a kind of buried metal pipeline Detector for Stray Currents, comprise master controller and the data storage being connected with its output terminal respectively, data display equipment and data processor, described master controller input end is connected with Data Detection unit, described Data Detection unit is by GPS time service module, data acquisition module and data conversion module form, described GPS time service module output terminal is connected with data acquisition module, described data acquisition module output terminal is connected with data conversion module, described data conversion module output terminal is connected with master controller, described GPS time service module, data acquisition module and data conversion module connect and compose signals collecting transmission channel successively, described GPS time service module is by the voltage signal collecting, existing flip-flop, there is again alternating component, Fourier analysis processing by data processing module to signal, obtain the spectrogram of signal, can obtain multiple parameters such as DC voltage size, alternating voltage size and frequency simultaneously, reach the object of direct current, AC synchronous collection, in addition, adopt the simultaneous techniques of GPS time service module, time synchronized collections of setting out makes strange land detecting instrument start detection simultaneously, reaches the object of multi-measuring point synchronous acquisition.
A kind of buried metal pipeline Detector for Stray Currents, comprise master controller and the data storage being connected with its output terminal respectively, data display equipment and data processor, it is characterized in that, described master controller input end is connected with Data Detection unit, described Data Detection unit is by GPS time service module, data acquisition module and data conversion module form, described GPS time service module output terminal is connected with data acquisition module, described data acquisition module output terminal is connected with data conversion module, described data conversion module output terminal is connected with master controller, described GPS time service module, data acquisition module and data conversion module connect and compose signals collecting transmission channel successively.
Described data acquisition module output terminal is connected with detection channels, at least 2 of described detection channels, each detection channels is for detection of a road voltage, described voltage is DC component or AC compounent, realize the test of hyperchannel alternating current-direct current undesired signal, adopt the data acquisition unit of high sampling rate, gather real-time voltage data, by data processor, collected data are carried out to Fourier transform, obtain direct current and multiple alternating component voltage signal numerical value, alternating current-direct current signals collecting is synchronously completed, synchronous acquisition analyzing and processing, can determine more accurately position and the size of stray current interference source.
Described data acquisition module is to realize the signal that GPS time service module is received, specifying the moment to gather the voltage of each detection channels, and the voltage of GPS time service module reception signal and the collection of this moment is passed through to data conversion module, be transferred to master controller and data processing module is processed, the signal receiving deposits data-carrier store in or shows in real time for data
Described data acquisition module output terminal is connected with contrast electrode (anode), and its input end is connected with buried pipeline (negative electrode).
Described contrast electrode (anode) is the buried pair of pottery type long-effect copper sulfate reference electrode that detects electric potential signal.
When the utility model work, use metal bar to pull out a pitting at the soil that is embedded with metallic conduit, contrast electrode (anode) bottom is placed in hole, make it to contact with soil well, Arid Area can suitably add water moistening, and contrast electrode copper core is as anode connection module passage positive pole, and tested buried pipeline (negative electrode) is as negative electrode connection module passage negative pole, wiring can pick out from buried pipeline (negative electrode), or adopts the reserved detective pole in ground.
By test, the beneficial effects of the utility model are: introduce GPS synchronous acquisition function, can measure the DC voltage of multiple passages and the data of alternating voltage simultaneously, and synchronous acquisition is carried out to analyzing and processing, determine accurately position and the size of stray current interference source.
Accompanying drawing explanation
Fig. 1 is the structure electricity theory diagram of the utility model embodiment.
Wherein, Reference numeral is: 1, master controller; 2, data-carrier store; 3, data display equipment; 4, data processor; 5, GPS time service module; 6, data acquisition module; 7, data conversion module; 8, contrast electrode (anode); 9, buried pipeline (negative electrode).
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Certainly, specific embodiment described herein is only in order to explain the utility model, and is not used in restriction the utility model.
Embodiment:
Referring to Fig. 1, the utility model is a kind of buried metal pipeline Detector for Stray Currents, comprise master controller 1 and the connected data storage 2 of difference, data display equipment 3 and data processor 4, it is characterized in that, described master controller 1 input end is connected with Data Detection unit, described Data Detection unit is by GPS time service module 5, data acquisition module 6 and data conversion module 7 form, described GPS time service module 5 output terminals are connected with data acquisition module 6, described data acquisition module 6 output terminals are connected with data conversion module 7, described data conversion module 7 output terminals are connected with master controller 1, described GPS time service module 5, data acquisition module 6 and data conversion module 7 connect and compose signals collecting transmission channel successively.
Described data acquisition module 6 output terminals are connected with detection channels, at least 2 of described detection channels, each detection channels is for detection of a road voltage, described voltage is DC component or AC compounent, realize the test of hyperchannel alternating current-direct current undesired signal, adopt the data acquisition module 6 of high sampling rate, gather real-time voltage data, by data processor 4, collected data are carried out to Fourier transform, obtain direct current and multiple alternating component voltage signal numerical value, alternating current-direct current signals collecting is synchronously completed, synchronous acquisition analyzing and processing, can determine more accurately position and the size of stray current interference source.
Described data acquisition module 6 is to realize the signal that GPS time service module 5 is received, specifying the moment to gather the voltage of each detection channels, and the voltage that GPS time service module 5 is received to signal and the collection of this moment is by data conversion module 7, be transferred to master controller 1 and data processor 4 is processed, the signal receiving deposits data-carrier store 2 in or shows in real time for data
Described data acquisition module 6 output terminals are connected with contrast electrode (anode) 8, and its input end is connected with buried pipeline (negative electrode) 9.
Described contrast electrode (anode) the 8th, buried pair of pottery type long-effect copper sulfate reference electrode of detection electric potential signal.
When the utility model work, use metal bar to pull out a pitting at the soil that is embedded with metallic conduit, contrast electrode 8 bottoms are placed in hole, make it to contact with soil well, Arid Area can suitably add water moistening, and contrast electrode 8 bronze medal cores are as anode connection module passage positive pole, and tested buried pipeline (negative electrode) 9 is as negative electrode connection module passage negative pole, wiring can pick out from buried pipeline (negative electrode) 9, or adopts the reserved detective pole in ground.
The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing; do not repeat them here; certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example; variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (5)
1. a buried metal pipeline Detector for Stray Currents, comprise master controller and the connected data storage of difference, data display equipment and data processor, it is characterized in that, described master controller input end is connected with Data Detection unit, described Data Detection unit is by GPS time service module, data acquisition module and data conversion module form, described GPS time service module output terminal is connected with data acquisition module, described data acquisition module output terminal is connected with data conversion module, described data conversion module output terminal is connected with master controller, described GPS time service module, data acquisition module and data conversion module connect and compose signals collecting transmission channel successively.
2. a kind of buried metal pipeline Detector for Stray Currents according to claim 1, it is characterized in that, described data acquisition module output terminal is connected with detection channels, at least 2 of described detection channels, each detection channels is for detection of a road voltage, and described voltage is DC component or AC compounent.
3. a kind of buried metal pipeline Detector for Stray Currents according to claim 1 and 2, it is characterized in that, described data acquisition module is to realize the signal that GPS time service module is received, specifying the moment to gather the voltage of each detection channels, and the voltage of GPS time service module reception signal and the collection of this moment is passed through to data conversion module, be transferred to master controller and data processing module is processed, the signal receiving deposits data-carrier store in or shows in real time for data.
4. a kind of buried metal pipeline Detector for Stray Currents according to claim 3, is characterized in that, the anodic bonding of described data acquisition module output terminal and contrast electrode, and its input end is connected with buried pipeline negative electrode.
5. a kind of buried metal pipeline Detector for Stray Currents according to claim 4, is characterized in that, the anode of described contrast electrode is the buried pair of pottery type long-effect copper sulfate reference electrode that detects electric potential signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320850260.9U CN203630213U (en) | 2013-12-23 | 2013-12-23 | Stray current detector for embedded metal pipeline |
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| CN201320850260.9U CN203630213U (en) | 2013-12-23 | 2013-12-23 | Stray current detector for embedded metal pipeline |
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| CN203630213U true CN203630213U (en) | 2014-06-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526296A (en) * | 2015-09-11 | 2017-03-22 | 成都娇子意航星科技有限公司 | Stray current measuring method based on fast Fourier transform |
| CN107024423A (en) * | 2017-03-21 | 2017-08-08 | 国家电网公司 | A kind of online alternating current-direct current disturbed test device of soil |
| CN107863767A (en) * | 2016-09-22 | 2018-03-30 | 中国石油天然气股份有限公司 | Oil-gas pipeline valve chamber earth protective device |
| CN109085448A (en) * | 2018-07-31 | 2018-12-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of converter station equipment leakage current waveform measurement and composition analysis device |
| CN110687609A (en) * | 2018-07-06 | 2020-01-14 | 中国石油化工股份有限公司 | Method for eliminating interference of parallel pipelines in detection of alternating current and direct current stray currents of buried pipelines |
| CN110749765A (en) * | 2019-10-29 | 2020-02-04 | 徐州和纬信电科技有限公司 | Stray current collection device with synchronous collection function |
-
2013
- 2013-12-23 CN CN201320850260.9U patent/CN203630213U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526296A (en) * | 2015-09-11 | 2017-03-22 | 成都娇子意航星科技有限公司 | Stray current measuring method based on fast Fourier transform |
| CN107863767A (en) * | 2016-09-22 | 2018-03-30 | 中国石油天然气股份有限公司 | Oil-gas pipeline valve chamber earth protective device |
| CN107863767B (en) * | 2016-09-22 | 2019-05-07 | 中国石油天然气股份有限公司 | Oil-gas pipeline valve chamber earth protective device |
| CN107024423A (en) * | 2017-03-21 | 2017-08-08 | 国家电网公司 | A kind of online alternating current-direct current disturbed test device of soil |
| CN107024423B (en) * | 2017-03-21 | 2019-09-10 | 国家电网公司 | A kind of online alternating current-direct current disturbed test device of soil |
| CN110687609A (en) * | 2018-07-06 | 2020-01-14 | 中国石油化工股份有限公司 | Method for eliminating interference of parallel pipelines in detection of alternating current and direct current stray currents of buried pipelines |
| CN110687609B (en) * | 2018-07-06 | 2022-02-01 | 中国石油化工股份有限公司 | Method for eliminating interference of parallel pipelines in detection of alternating current and direct current stray currents of buried pipelines |
| CN109085448A (en) * | 2018-07-31 | 2018-12-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of converter station equipment leakage current waveform measurement and composition analysis device |
| CN110749765A (en) * | 2019-10-29 | 2020-02-04 | 徐州和纬信电科技有限公司 | Stray current collection device with synchronous collection function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141223 |
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| EXPY | Termination of patent right or utility model |