CN209178483U - Cathodic protection potential measuring device - Google Patents
Cathodic protection potential measuring device Download PDFInfo
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- CN209178483U CN209178483U CN201821771306.7U CN201821771306U CN209178483U CN 209178483 U CN209178483 U CN 209178483U CN 201821771306 U CN201821771306 U CN 201821771306U CN 209178483 U CN209178483 U CN 209178483U
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Abstract
The utility model relates to a kind of cathodic protection potential measuring devices, including include: energization potential acquisition unit, switch-off potential acquisition unit, data acquisition unit and switch block；The input terminal of energization potential acquisition unit connects data acquisition unit for connecting buried pipeline, output end；The input terminal of switch-off potential acquisition unit connects data acquisition unit for connecting test piece, output end；Switch block is provided with reference electrode for connecting buried pipeline and test piece, and close to buried pipeline, and reference electrode is for providing common end；Test piece is arranged close to reference electrode, and buried pipeline is connect with cathode protection device；Switch-off potential acquisition unit is used to measure the current potential of test piece when switch block disconnects；When energization potential acquisition unit is worked normally for measuring cathode protection device, the pipeline current potential of buried pipeline.By acquiring two kinds of parameters, influence of the soil IR drop to practical pipeline current potential can be excluded, to judge pipeline currently whether under cathode protecting state.
Description
Technical field
The utility model relates to cathode protection technology fields, more particularly to cathodic protection potential measuring device.
Background technique
It is currently used using the cathode protection measures such as sacrificial anode, impressed current protective conduit not by soil corrosion
Way needs to measure the cathodic protection potential of pipeline in routine maintenance procedure, and whether monitoring pipeline, which is currently in, has
The cathode protecting state of effect, to sum up, it is necessary to which a kind of cathodic protection potential measuring device is provided.
Utility model content
Based on this, the utility model embodiment provides a kind of cathodic protection potential measuring device, comprising: energization current potential is adopted
Collect unit, switch-off potential acquisition unit, data acquisition unit and switch block；
The input terminal of energization potential acquisition unit connects data acquisition unit for connecting buried pipeline, output end；
The input terminal of switch-off potential acquisition unit connects data acquisition unit for connecting test piece, output end；
Switch block is provided with reference electrode, reference electrode for connecting buried pipeline and test piece, and close to buried pipeline
For providing common end；Test piece is arranged close to reference electrode, and buried pipeline is connect with cathode protection device；
Switch-off potential acquisition unit is used to measure the current potential of test piece when switch block disconnects；
When energization potential acquisition unit is worked normally for measuring cathode protection device, the pipeline current potential of buried pipeline.
Cathodic protection potential measuring device further includes controller in one of the embodiments, controller respectively with switch
Component is connected with switch-off potential acquisition unit.
Switch-off potential acquisition unit includes frequency divider, pulsqe distributor and sampling holder in one of the embodiments,；
Controller is connect with the control terminal of the control terminal of frequency divider and pulsqe distributor respectively, the output end and arteries and veins of frequency divider
The input terminal connection of distributor is rushed, the output end of pulsqe distributor and the control terminal of sampling holder connect；
The input terminal of sampling holder is connect with test piece, and the output end of sampling holder is connect with data acquisition unit.
Cathodic protection potential measuring device further includes power supply unit, power supply list in one of the embodiments,
The output end of member is connect with energization potential acquisition unit, switch-off potential acquisition unit respectively, for being energization potential acquisition unit
Working power is provided with switch-off potential acquisition unit；
Controller further includes the first timing unit, and the first timing unit connects with power supply unit and switch block respectively
It connects.
Controller further includes the second timing unit, the output end difference of the second timing unit in one of the embodiments,
It is connect with the control terminal of the control terminal of frequency divider and pulsqe distributor.
Cathodic protection potential measuring device further includes ac potential acquisition unit, alternating current in one of the embodiments,
Position acquisition unit input terminal connects data acquisition unit for connecting buried pipeline, the output end of ac potential acquisition unit.
Cathodic protection potential measuring device further includes the anti-interference unit of the first signal in one of the embodiments, and first
For the input terminal of the anti-interference unit of signal for connecting buried pipeline, the output end of the anti-interference unit of the first signal is separately connected energization
Potential acquisition unit and ac potential acquisition unit.
Cathodic protection potential measuring device further includes the anti-interference unit of second signal in one of the embodiments, and second
For the input terminal of the anti-interference unit of signal for connecting test piece, output end and the switch-off potential acquisition of the anti-interference unit of second signal are single
The input terminal connection of member.
Ac potential acquisition unit includes logical friendship block isolating circuit and DC converting circuit in one of the embodiments, is led to
It hands over the input terminal of block isolating circuit to connect with the output end of the anti-interference unit of the first signal, leads to the output end and direct current for handing over block isolating circuit
The input terminal of conversion circuit connects, and the output end of DC converting circuit is connect with data acquisition unit.
Energization potential acquisition unit includes logical directly every alternating current road in one of the embodiments, is led to directly every the defeated of alternating current road
Enter end to connect with the output end of the anti-interference unit of the first signal, the logical output end directly every alternating current road is connect with data acquisition unit.
One or more embodiments in the utility model at least have the following advantages and beneficial effects: cathodic protection potential
Measuring device, comprising: energization potential acquisition unit, switch-off potential acquisition unit, data acquisition unit and switch block are powered
The input terminal of potential acquisition unit connects data acquisition unit, switch-off potential acquisition unit for connecting buried pipeline, output end
Input terminal for connecting test piece, output end connects data acquisition unit；Switch block is used to connect buried pipeline and test piece, and
Buried pipeline is provided with reference electrode, reference electrode is for providing common end；Test piece is arranged close to reference electrode, underground pipe
Road is connect with cathode protection device；Switch block is disconnected, switch-off potential acquisition unit acquires the current potential of test piece, obtains power-off electric
Position, energization potential acquisition unit acquire pipeline current potential when cathode protection device works normally, obtain energization current potential.Pass through acquisition
Energization current potential and switch-off potential can exclude influence of the soil environment to practical pipeline potential measurement, realize cathodic protection potential
Monitoring, and data supporting is provided to monitor the operating condition of cathode protection device.
Detailed description of the invention
By being more particularly described for the preferred embodiment of the utility model shown in the drawings, addressed on the utility model
Other purposes, feature and advantage will become more fully apparent.Identical appended drawing reference indicates identical part in all the attached drawings, and
Attached drawing deliberately is not drawn by actual size equal proportion scaling, it is preferred that emphasis is the purport of the utility model is shown.
Fig. 1 is the structural schematic diagram of cathodic protection potential measuring device in one embodiment；
Fig. 2 is the structural schematic diagram of cathodic protection potential measuring device in another embodiment；
Fig. 3 is the connection schematic diagram of switch-off potential acquisition unit and other devices in one embodiment；
Fig. 4 is in one embodiment, and energization potential acquisition unit, ac potential acquisition unit and the connection of other devices are shown
It is intended to.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
It is more thorough and comprehensive to open content.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " installation ", " one
End ", " other end " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
The utility model embodiment provides a kind of cathodic protection potential measuring device, as shown in Figure 1, comprising: be powered electricity
Position acquisition unit 10, switch-off potential acquisition unit 20, data acquisition unit 30 and switch block 40；Energization potential acquisition unit 10
Input terminal for connecting buried pipeline 50, output end connects data acquisition unit 30；The input of switch-off potential acquisition unit 20
End connects data acquisition unit 30 for connecting test piece 60, output end；Switch block 40 is for connecting buried pipeline 50 and test piece
60, and buried pipeline 50 is provided with reference electrode 70, reference electrode 70 is for providing common end；Test piece 60 is close to reference electricity
Pole 70 is arranged, and buried pipeline 50 is connect with cathode protection device；Switch-off potential acquisition unit 20 is disconnected for measuring switch block 40
The current potential of test piece 60 when opening；When energization potential acquisition unit 10 is worked normally for measuring cathode protection device, buried pipeline 50
Pipeline current potential.
Wherein, reference electrode 70, reference electrode compare when measuring various electrode potentials as reference
Electrode provides common end in cathodic protection potential measuring device for each unit module.Switch block 40 is for connecting test piece 60
With buried pipeline 50, when switch block 40 is closed, test piece 60 is connected to buried pipeline 50, when switch block 40 disconnects, test piece 60
It is disconnected with buried pipeline 50.Specifically, energization potential acquisition unit 10 acquires the energization electric signal of buried pipeline 50, and it is sent to
Data acquisition unit 30, is energized current potential, and switch-off potential acquisition unit 20 measures test piece 60 when switch block 40 disconnects
Switch-off potential, and the data of acquisition are sent to data acquisition unit 30, using 60 power failure test of test piece, acquire cathodic protection electricity
The energization current potential and switch-off potential of position, so that the switch-off potential of soil corrosivity can be characterized and for being characterized in soil ring by obtaining
The energization current potential of cathode protection device working performance under border can eliminate a part of IR drop to reality by acquiring two kinds of parameters
The influence of pipeline current potential, to judge pipeline currently whether under cathode protecting state.
In one of the embodiments, as shown in Fig. 2, cathodic protection potential measuring device further includes controller 80, control
Device 80 is connect with switch block 40 and switch-off potential acquisition unit 20 respectively.Specifically, 80 control switch component 40 of controller
On off operating mode, to control connecting or disconnecting between test piece 60 and buried pipeline 50.Meanwhile controller 80 controls switch-off potential and adopts
Collect unit 20 when test piece 60 and buried pipeline 50 disconnect, measures the current potential of test piece 60, obtain switch-off potential.
Optionally, cathodic protection potential measuring device further includes impressed current anode 92, and impressed current anode 92 is in test piece 60
When being disconnected with pipeline, for being connect with test piece 60, to protect the sacrificial anode of test piece 60.Switch block 40 may include switching
Switch, switching switch can be the switch including three connectors, and one of connector is used to connect with other two connectors, such as
It can be single-pole double-throw switch (SPDT) or single-pole double-throw relay etc..Switching switch includes the first connector, the second connector and third connector,
First connector connects impressed current anode 92, and the second connector connects test piece 60, and third connector connects buried pipeline 50, is carrying out switch-off potential measurement
When, the control switching switch of controller 80 connects the second connector with third connector, the test piece 60 that is connect at this time with the second connector and
It is connected between the pipeline being connect with third connector, polarizes to test piece 60, at this point, test piece 60 is by connecting with buried pipeline 50
Impressed current protection, then the second connector of the control of controller 80 switching switch and third connector disconnect, and the control of controller 80 is disconnected
Electric potential acquisition unit 20 acquires the current potential of test piece 60, obtains switch-off potential, and after obtaining switch-off potential, the control of controller 80 is cut
The state that switching is connected to the first connector and the second connector is changed, sacrifices impressed current anode 92 to protect test piece 60, in order to avoid test piece
60 corrode when being chronically in soil, improve the detection accuracy of pipeline cathode protection current potential.
In one of the embodiments, as shown in figure 3, switch-off potential acquisition unit 20 includes frequency divider 21, pulse distribution
Device 22 and sampling holder 23；Controller 80 is connect with the control terminal of the control terminal of frequency divider 21 and pulsqe distributor 22 respectively,
The output end of frequency divider 21 is connect with the input terminal of pulsqe distributor 22, the output end and sampling holder 23 of pulsqe distributor 22
Control terminal connection；The input terminal of sampling holder 23 is connect with test piece 60, and the output end and data of sampling holder 23 acquire
Unit 30 connects.
Specifically, frequency divider 21 is for generating low and high level pulse and being transmitted to pulsqe distributor 22, pulsqe distributor 22
According to the height pulse that frequency divider 21 is sent, the height pulses of some cycles is exported to sampling holder 23, sampling holder 23
When high level, switch-off potential is acquired, sampling is kept when low level.Controller 80 disconnects test piece 60 and buries in control switch component 40
While ground pipeline 50 connects, the working condition of frequency divider 21 and pulsqe distributor 22 is controlled, carries out switch-off potential acquisition.
Optionally, as shown in Fig. 2, cathodic protection potential measuring device further includes power-off sampling switch 95, power-off sampling is opened
It closes 95 to be serially connected between third connector and buried pipeline 50, the sampling section that controller 80 passes through control switch-off potential acquisition unit 20
It claps and cooperates with the on-off beat of power-off sampling switch 95, to acquire the switch-off potential after power-off sampling switch 95 disconnects.
In one of the embodiments, as shown in Fig. 2, cathodic protection potential measuring device further includes power supply unit
90, the output end of power supply unit 90 is connect with energization potential acquisition unit 10, switch-off potential acquisition unit 20 respectively, is used for
Working power is provided for energization potential acquisition unit 10 and switch-off potential acquisition unit 20；Controller 80 further includes that the first timing is single
Member 81, the first timing unit 81 is connect with power supply unit 90 and switch block 40 respectively.
Specifically, the first timing unit 81 is connect with the input terminal of power supply mould group, the output of the first timing unit 8141
Height pulse, the power supply of control power supply unit 90 or stopping power supply being realized by controlling the power supply state of power supply power supply unit
Control to the working condition of cathodic protection potential detection device, for example, the first timing unit 81 can export one every 15 days
Secondary high level pulse, driving power feed unit 90 are each module for power supply, so that each modular unit is put into cathodic protection potential and adopt
Collect in work, and the first timing unit 81 can control switch block 40 after control power supply unit 90 is powered
Closure and off state, so as to potential acquisition unit 10 and the progress cathodic protection potential acquisition of switch-off potential acquisition unit 20 of being powered
Work.
In one of the embodiments, as shown in figure 3, controller 80 further includes the second timing unit 82, the second timing is single
The output end of member 82 is connect with the control terminal of the control terminal of frequency divider 21 and pulsqe distributor 22 respectively.Specifically, the second timing
The output end of unit 82 is separately connected the control terminal of pulsqe distributor 22 and the control terminal of frequency divider 21, the control of the second timing unit 82
Frequency divider 21 and pulsqe distributor 22 processed export sampling pulse, and the sampling pulse that pulsqe distributor 22 exports is exported to sampling and kept
Device 23, sampling holder 23 are sampled in high level, and sampling is kept when low level.Optionally, as shown in Fig. 2, the second timing is single
Member 82 controls the on-off beat of power-off sampling switch 95, and controls frequency divider 21 and the output of pulsqe distributor 22 simultaneously to sampling guarantor
The sampling beat of holder 23 allows sampling holder 23 to acquire the switch-off potential after power-off sampling switch 95 disconnects.
In one of the embodiments, as shown in Fig. 2, cathodic protection potential measuring device further includes that ac potential acquisition is single
Member 91,91 input terminal of ac potential acquisition unit connect for connecting buried pipeline 50, the output end of ac potential acquisition unit 91
Connect data acquisition unit 30.Wherein, what ac potential acquisition unit 91 acquired is that alternating current in pipeline electrical current is corresponding
Equivalent DC current potential is positive value.Specifically, the mixing electric signal that buried pipeline 50 exports is exported to ac potential acquisition unit
91, ac potential acquisition unit 91 exports ac potential to data acquisition unit 30.
In one of the embodiments, as shown in figure 4, cathodic protection potential measuring device further includes that the first signal is anti-interference
Unit 93, the input terminal of the anti-interference unit 93 of the first signal are used to connect buried pipeline 50, the anti-interference unit 93 of the first signal
Output end is separately connected energization potential acquisition unit 10 and ac potential acquisition unit 91.Specifically, the anti-interference list of the first signal
The current signal of first 93 receiving pipelines outflow, and the processing such as signal amplification and isolation is carried out to the current signal, it is electric that treated
Signal is exported respectively to energization potential acquisition unit 10 and ac potential acquisition unit 91, improves signal reliability.
In one of the embodiments, as shown in figure 3, cathodic protection potential measuring device further includes that second signal is anti-interference
Unit 94, the input terminal of the anti-interference unit 94 of second signal is for connecting test piece 60, the output of the anti-interference unit 94 of second signal
End is connect with the input terminal of switch-off potential acquisition unit 20.
Specifically, the input terminal of the anti-interference unit 94 of second signal is connect with test piece 60 or the second connector, second signal is anti-
The output end of interference unit 94 is connect with the input terminal of switch-off potential acquisition unit 20 (sampling holder 23), switch-off potential acquisition
The output end of unit 20 is connect with data acquisition unit 30, powers off the control of the output end and sampling holder 23 of controlling of sampling unit
End connection processed.Wherein, sampling holder 23 can be the sampling holder 23 of model LF398 model.Second signal is anti-interference
Unit 94 may include second operational amplifier 942 and second signal isolator 943, and second operational amplifier 942 and second are believed
Number isolator 943 is sequentially connected in series between the second connector and sampling holder 23.Optionally, switch-off potential acquisition unit 20 also wraps
The second filter circuit 941 is included, the second filter circuit 941 is serially connected between the second connector and second operational amplifier 942.
In one of the embodiments, as shown in figure 4, ac potential acquisition unit 91 includes logical friendship 911 He of block isolating circuit
DC converting circuit 912, the logical input terminal for handing over block isolating circuit 911 connect with the output end of the anti-interference unit 93 of the first signal, lead to
Hand over block isolating circuit 911 output end connect with the input terminal of DC converting circuit 912, the output end of DC converting circuit 912 and
Data acquisition unit 30 connects.
Specifically, the mixing electric signal that the anti-interference unit 93 of the first signal exports is exported respectively to logical directly every 11 He of alternating current road
It is logical to hand over block isolating circuit 911, it is changed into AC compounent by the logical hybrid current for handing over 911 part of block isolating circuit, AC compounent passes through again
DC converting circuit 912, output ac potential to data acquisition unit 30.Wherein, DC converting circuit 912 may include direct current
Converter and range adjustment circuit, range adjustment circuit is external in direct current transducer periphery, for adjusting direct current transducer output
Equivalent DC signal range.Optionally, direct current transducer can be the direct current transducer of model AD637 model.
In one of the embodiments, as shown in figure 4, energization potential acquisition unit 10 includes logical directly every alternating current road 11, lead to
Directly the input terminal every alternating current road 11 is connect with the output end of the anti-interference unit 93 of the first signal, is led to directly every the output end on alternating current road 11
It is connect with data acquisition unit 30.
Specifically, the anti-interference unit 93 of the first signal receives the current signal that buried pipeline 50 flows out, and the electric current is believed
Number be filtered, the processing such as signal amplification and isolation, treated electric signal through it is logical directly every alternating current road 11 after, output energization current potential
To data acquisition unit 30.Wherein, the anti-interference unit 93 of the first signal may include the first operational amplifier 932 and the first signal
Isolator 933 forms, for example, the first operational amplifier 932 can be the first operational amplifier 932 of TL0626 model, first
Signal isolator 933 can be the first signal isolator 933 of IS0124 model.Optionally, the anti-interference unit 93 of the first signal
Can also include the first filter circuit 931, the first filter circuit 931 be serially connected in pipeline and the first signal isolation amplifying circuit it
Between, for being filtered to the electric signal that pipeline exports.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.The utility model is several above described embodiment only expresses
Embodiment, the description thereof is more specific and detailed, and but it cannot be understood as the limitations to utility model patent range.It answers
It, without departing from the concept of the premise utility, can be with when, it is noted that for those of ordinary skill in the art
Several modifications and improvements are made, these are all within the protection scope of the present invention.Therefore, the protection model of the utility model patent
Enclosing should be determined by the appended claims.
Claims (10)
1. a kind of cathodic protection potential measuring device characterized by comprising energization potential acquisition unit, switch-off potential acquisition
Unit, data acquisition unit and switch block；
The input terminal of the energization potential acquisition unit connects the data acquisition unit for connecting buried pipeline, output end；
The input terminal of the switch-off potential acquisition unit connects the data acquisition unit for connecting test piece, output end；
The switch block is provided with reference electricity for connecting the buried pipeline and the test piece, and close to the buried pipeline
Pole, the reference electrode is for providing common end；The test piece is arranged close to the reference electrode, the buried pipeline and cathode
Protective device connection；
The switch-off potential acquisition unit is used to measure the current potential of the test piece when switch block disconnects.
2. cathodic protection potential measuring device according to claim 1, which is characterized in that it further include controller, the control
Device processed is connect with the switch block and the switch-off potential acquisition unit respectively.
3. cathodic protection potential measuring device according to claim 2, which is characterized in that the switch-off potential acquisition unit
Including frequency divider, pulsqe distributor and sampling holder；
The controller is connect with the control terminal of the control terminal of the frequency divider and the pulsqe distributor respectively, the frequency divider
Output end connect with the input terminal of the pulsqe distributor, the output end of the pulsqe distributor and the sampling holder
Control terminal connection；
The input terminal of the sampling holder is connect with the test piece, and the output end of the sampling holder and the data acquire
Unit connection.
4. cathodic protection potential measuring device according to claim 3, which is characterized in that it further include power supply unit,
The output end of the power supply unit is connect with the energization potential acquisition unit, switch-off potential acquisition unit respectively, is used for
Working power is provided for the energization potential acquisition unit and the switch-off potential acquisition unit；
The controller further includes the first timing unit, first timing unit respectively with the power supply unit and described
Switch block connection.
5. cathodic protection potential measuring device according to claim 3, which is characterized in that the controller further includes second
Timing unit, the control with the control terminal of the frequency divider and the pulsqe distributor respectively of the output end of second timing unit
End connection processed.
6. cathodic protection potential measuring device according to any one of claims 1-5, which is characterized in that further include exchange
Potential acquisition unit, the ac potential acquisition unit input terminal is for connecting the buried pipeline, the ac potential acquisition
The output end of unit connects the data acquisition unit.
7. cathodic protection potential measuring device according to claim 6, which is characterized in that further include that the first signal is anti-interference
Unit, the input terminal of the anti-interference unit of the first signal is for connecting the buried pipeline, the anti-interference list of the first signal
The output end of member is separately connected energization potential acquisition unit and ac potential acquisition unit.
8. cathodic protection potential measuring device according to claim 6, which is characterized in that further include that second signal is anti-interference
Unit, the input terminal of the anti-interference unit of second signal are used to connect the test piece, the anti-interference unit of second signal
Output end is connect with the input terminal of the switch-off potential acquisition unit.
9. cathodic protection potential measuring device according to claim 7, which is characterized in that the ac potential acquisition unit
Block isolating circuit and DC converting circuit, the logical input terminal and the anti-interference list of the first signal for handing over block isolating circuit are handed over including logical
The output end connection of member, the logical output end for handing over block isolating circuit is connect with the input terminal of the DC converting circuit, described straight
The output end of stream conversion circuit is connect with the data acquisition unit.
10. the cathodic protection potential measuring device according to claim 7 or 9, which is characterized in that the energization potential acquisition
Unit includes logical directly every alternating current road, described logical directly every the input terminal on alternating current road and the output end of the anti-interference unit of the first signal
Connection, the logical output end directly every alternating current road are connect with the data acquisition unit.
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|---|---|---|---|
| CN201821771306.7U CN209178483U (en) | 2018-10-30 | 2018-10-30 | Cathodic protection potential measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821771306.7U CN209178483U (en) | 2018-10-30 | 2018-10-30 | Cathodic protection potential measuring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499513A (en) * | 2019-09-30 | 2019-11-26 | 苏州港华燃气有限公司 | Integral type cathodic protection potential measuring device and measuring method |
| CN113913833A (en) * | 2021-10-09 | 2022-01-11 | 成都千嘉科技有限公司 | Device, method and circuit for detecting cathode protection effect of buried steel pipeline |
| CN113933571A (en) * | 2020-06-29 | 2022-01-14 | 上海旗鳐海洋技术有限公司 | Potential current acquisition system based on narrow-band Internet of things and use method |
| CN114774928A (en) * | 2022-04-07 | 2022-07-22 | 胡钊 | Buried pipeline cathode protection test method and system |
| CN116773429A (en) * | 2023-05-31 | 2023-09-19 | 中冶检测认证有限公司 | Nuclear power drum filter screen cathode protection and interference monitoring system and evaluation method |
-
2018
- 2018-10-30 CN CN201821771306.7U patent/CN209178483U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499513A (en) * | 2019-09-30 | 2019-11-26 | 苏州港华燃气有限公司 | Integral type cathodic protection potential measuring device and measuring method |
| CN110499513B (en) * | 2019-09-30 | 2024-03-12 | 苏州港华燃气有限公司 | Integrated cathode protection potential measuring device and measuring method |
| CN113933571A (en) * | 2020-06-29 | 2022-01-14 | 上海旗鳐海洋技术有限公司 | Potential current acquisition system based on narrow-band Internet of things and use method |
| CN113913833A (en) * | 2021-10-09 | 2022-01-11 | 成都千嘉科技有限公司 | Device, method and circuit for detecting cathode protection effect of buried steel pipeline |
| CN113913833B (en) * | 2021-10-09 | 2022-11-01 | 成都千嘉科技有限公司 | Device, method and circuit for detecting cathode protection effect of buried steel pipeline |
| CN114774928A (en) * | 2022-04-07 | 2022-07-22 | 胡钊 | Buried pipeline cathode protection test method and system |
| CN114774928B (en) * | 2022-04-07 | 2023-12-22 | 胡钊 | Buried pipeline cathode protection test method and system |
| CN116773429A (en) * | 2023-05-31 | 2023-09-19 | 中冶检测认证有限公司 | Nuclear power drum filter screen cathode protection and interference monitoring system and evaluation method |
| CN116773429B (en) * | 2023-05-31 | 2024-05-24 | 中冶检测认证有限公司 | Nuclear power drum filter screen cathode protection and interference monitoring system and evaluation method |
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