Pipeline potential acquisition transmission device and method and pipeline protection system

Abstract

The present application relates to pipeline potential acquisition transmission device and method and pipeline protection system, device is arranged in test pile body, including: on-off module, communication module, potential acquisition ware, circuit board, long-acting copper sulfate reference electrode and polarization test piece, on-off module, communication module and potential acquisition ware are integrated on the circuit board, communication module is connected with on-off module and potential acquisition ware respectively, long-acting copper sulfate reference electrode and polarization test piece are buried, and potential acquisition ware is connected with long-acting copper sulfate reference electrode, polarization test piece and the pipeline line of the pipeline to be measured through on-off module.This application does not need artificial to measure potential on site, even in the season that part cannot enter the site to measure potential, can also remotely send control instruction through communication module to carry out potential measurement, so that potential measurement is not influenced by environmental factors.

Description

Technical Field

[0001] This invention relates to the field of pipeline protection technology, and in particular to pipeline potential acquisition and transmission devices and methods, and pipeline protection systems. Background Technology

[0002] With the rapid development of the national pipeline network, the total length of pipelines under domestic jurisdiction will gradually increase. Currently, in the long-distance pipeline industry, the use of cathodic protection needs to be reviewed monthly. The monthly routine measurement of pipeline protection potential is generally done manually at the test pile site. This mainly measures the pipeline's energized potential and AC interference voltage, which is not only inefficient but also susceptible to environmental factors, resulting in low data accuracy, and cannot measure the "de-energized potential." Furthermore, in potential measurement work, pipelines are generally located in rice, corn, and wheat fields, making it difficult to enter farmland for potential measurement during certain seasons. Forcing entry can lead to conflicts with farmers, and the measurement is also greatly affected by environmental factors. Summary of the Invention

[0003] To overcome the problem that manual on-site measurement of pipeline potential is greatly affected by environmental factors, this invention provides a pipeline potential acquisition and transmission device and method, as well as a pipeline protection system.

[0004] In a first aspect, in order to solve the above-mentioned technical problems, the present invention provides a pipeline potential acquisition and transmission system, which is installed in the test pile body and includes: a continuity module, a communication module, a potential acquisition device, a circuit board, a long-lasting copper sulfate reference electrode, and a polarized test piece.

[0005] The on / off module, the communication module, and the potential acquisition device are integrated on the circuit board. The communication module is connected to the on / off module and the potential acquisition device respectively. The long-lasting copper sulfate reference electrode and the polarized test piece are buried underground. The potential acquisition device is connected to the long-lasting copper sulfate reference electrode, the polarized test piece, and the pipeline line of the pipeline under test through the on / off module.

[0006] The communication module is used to receive various control commands from the terminal device; wherein, the control commands are commands to control the on / off module and the potential acquisition unit to perform corresponding functions.

[0007] The on / off module is used to control the on / off relationship between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece and the pipeline line according to the first control command, and to control the corresponding on / off duration.

[0008] The potential acquisition device is used to measure different types of potentials according to the second control command, different on / off durations, and the circuit connection between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline.

[0009] The communication module is used to transmit different types of potentials collected by the potential acquisition device to the terminal device.

[0010] Secondly, the present invention provides a pipeline potential acquisition and transmission method, including:

[0011] The communication module receives various control commands from the terminal device; wherein, the control commands are commands that control the corresponding functions of the on / off module and the potential acquisition unit.

[0012] The on / off module controls the on / off relationship between the potential acquisition device, the long-lasting copper sulfate reference electrode, the polarized test piece, and the pipeline line according to the first control command, and controls the corresponding on / off duration.

[0013] The potential acquisition device measures different types of potentials according to the second control command, different on / off durations, and the circuit connection between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline.

[0014] The different types of potentials collected by the potential acquisition device are transmitted to the terminal device through the communication module.

[0015] Thirdly, the present invention provides a pipeline protection system, including the pipeline potential acquisition and transmission device and terminal equipment as described above, wherein the terminal equipment is specifically used for:

[0016] Generate various control commands;

[0017] And manage the safety status of the pipeline based on the point acquisition results fed back by the pipeline potential acquisition and transmission device.

[0018] The beneficial effects of this invention are as follows: Through the communication module, commands can be remotely sent to control the on / off module and the potential acquisition device to perform corresponding functions. The on / off module can then generate the on / off duration of the connection between the potential acquisition device and the long-life copper sulfate reference electrode, the polarized test piece, or the pipeline, as well as control the on / off state of the circuit. Based on different circuit on / off states and durations, different types of potentials are measured, and finally, each potential is transmitted back to the terminal device via the communication module. This application eliminates the need for manual on-site potential measurement. Even in seasons where on-site potential measurement is not possible, potential measurement can be performed remotely via the communication module, making the potential measurement unaffected by environmental factors. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the pipeline potential acquisition and transmission device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a pipeline potential acquisition and transmission device according to another embodiment of the present invention;

[0022] Figure 3 This is a flowchart of the pipeline potential acquisition and transmission method according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the pipe protection system according to an embodiment of the present invention. Detailed Implementation

[0024] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0025] The pipeline potential acquisition and transmission device and method, and pipeline protection system of the present invention are described below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, the pipeline potential acquisition and transmission device of this invention is installed in the test pile body and includes: a continuity module, a communication module, a potential acquisition device, a circuit board, a long-life copper sulfate reference electrode, and a polarized test piece;

[0027] The on / off module, the communication module, and the potential acquisition device are integrated on the circuit board. The communication module is connected to the on / off module and the potential acquisition device respectively. The long-lasting copper sulfate reference electrode and the polarized test piece are buried underground. The potential acquisition device is connected to the long-lasting copper sulfate reference electrode, the polarized test piece, and the pipeline line of the pipeline under test through the on / off module.

[0028] The communication module is used to receive various control commands from the terminal device; wherein, the control commands are commands to control the on / off module and the potential acquisition unit to perform corresponding functions.

[0029] The on / off module is used to control the on / off relationship between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece and the pipeline line according to the first control command, and to control the corresponding on / off duration.

[0030] The potential acquisition device is used to measure different types of potentials according to the second control command, different on / off durations, and the circuit connection between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline.

[0031] The communication module is used to transmit different types of potentials collected by the potential acquisition device to the terminal device.

[0032] In this embodiment, the communication module allows for remote transmission of commands to control the on / off module and the potential acquisition unit to perform corresponding functions. The on / off module generates the on / off duration of the connection between the potential acquisition unit and the long-life copper sulfate reference electrode, the polarized test piece, or the pipeline, as well as the control circuit on / off status. Based on different circuit on / off times, different types of potentials are measured, and finally, the communication module transmits each potential back to the terminal device. This application eliminates the need for manual on-site potential measurement. Even in seasons where on-site measurement is impossible, potential measurement can be performed remotely via the communication module, making the potential measurement unaffected by environmental factors.

[0033] The long-lasting copper sulfate reference electrode is a commonly used reference electrode in electrochemical experiments, serving as a reference for measuring various electrode potentials. Its main component is copper sulfate, and a stable electrode system is formed by immersing a copper sheet in a copper sulfate solution. This electrode has many advantages, such as good stability, fast response time, and reusability.

[0034] The function of polarized test pieces is to reflect the cathodic protection status of pipelines by testing the potential of the test piece connected to the pipeline. After connecting the test piece to the pipeline to be protected and fully cathodic polarizing it, the potential of the test piece to the electrolyte (soil) is tested at the moment of connection and disconnection between the test piece and the pipeline.

[0035] Optionally, the on / off duration is 100-1000ms.

[0036] The switching time is the optimal time obtained after the experiment. Too long or too short a switching time will not be able to obtain an accurate potential.

[0037] Optionally, the communication module uses Bluetooth communication.

[0038] Since the Bluetooth communication distance is no less than 10 meters, workers can control the pipeline potential acquisition and transmission device from a distance, solving the problem that workers cannot go to the site to measure the potential during certain seasons.

[0039] Optionally, the device may also include multiple reference tubes;

[0040] The long-lasting copper sulfate reference electrode is disposed at one end of the first reference tube, and the potential acquisition device extends from the other end of the first reference tube to the inside of the first reference tube via a wire through a switching module, and is connected to the long-lasting copper sulfate reference electrode at the other end of the first reference tube.

[0041] The polarization test piece is disposed at one end of the second reference tube, and the potential acquisition device extends from the other end of the second reference tube into the interior of the second reference tube via a wire through an on / off module, and is connected to the polarization test piece at the other end of the second reference tube.

[0042] In this embodiment, to prevent the wire from being affected by organisms in the soil, a reference tube is set up. A long-lasting copper sulfate reference electrode and a polarization test piece are connected to one end of the reference tube. The wire enters from the other end of the reference tube and extends to the long-lasting copper sulfate reference electrode and the polarization test piece. The reference tube effectively prevents the influence of organisms in the soil on the wire.

[0043] In this embodiment, each device adopts a low-energy design, and a single battery can run for more than 5 years. The battery is replaceable, and a lightning protection module can also be set to prevent damage caused by lightning current or fault current on the pipeline.

[0044] Optionally, the switching module includes a switching controller and multiple switching switches;

[0045] The communication module is connected to the on / off controller. The potential acquisition device is connected to the long-lasting copper sulfate reference electrode through a first on / off switch, to the polarized test piece through a second on / off switch, and to the pipeline line through a third on / off switch. The on / off controller is connected to the first on / off switch, the second on / off switch, and the third on / off switch respectively.

[0046] In this embodiment, the conversion between various types of potential measurements is simple, requiring only the adjustment of the opening and closing of different on / off switches, making the operation easy.

[0047] like Figure 2 As shown, the on / off controller, communication module, on / off switch and potential acquisition device are integrated on the circuit board, which is placed in the upper part of the pile body, and the pile body can be directly inserted into the soil to form a fixed structure.

[0048] In addition, an inlet is provided at the bottom of the pile. The potential acquisition device uses a wire to extend from the inlet to connect to the long-lasting copper sulfate reference electrode, the potential acquisition device uses a wire to extend from the inlet to connect to the polarization test piece, and the potential acquisition device uses a wire to extend from the inlet to connect to the pipeline.

[0049] In addition, to prevent the wire from being affected by insects and other organisms in the soil, a reference tube can be installed. The long-lasting copper sulfate reference electrode and the polarization test piece are connected to one end of the reference tube, and the wire enters from the other end of the reference tube and extends to the long-lasting copper sulfate reference electrode and the polarization test piece.

[0050] Optionally, the potential acquisition device is specifically used for:

[0051] When the third on / off switch is open and the first on / off switch and the second on / off switch are closed, the AC voltage is measured.

[0052] When the first on / off switch and the third on / off switch are open, the second on / off switch is closed, and the circuit is maintained connected for a first preset time, the potential at the end of the first preset time is taken as the natural potential.

[0053] When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a second preset time, the circuit is instantly disconnected at the end of the third preset time, and the potential at the instantaneous disconnection of the circuit is taken as the power-off potential.

[0054] When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a third preset time, the potential at the end of the third preset time is taken as the energizing potential.

[0055] The various potentials in this embodiment are explained as follows:

[0056] Spontaneous potential: The corrosion potential from which no static current (external) flows into or out of the metal surface under study;

[0057] Current potential: The pipe-to-ground potential measured during continuous operation of the cathodic protection system.

[0058] Power-off potential: Instantaneous power-off potential, which is the potential measured instantaneously after a short delay following the interruption of the circuit current, in order to measure the potential without IR drop.

[0059] AC voltage: The AC voltage between the pipe and the electrolyte generated by AC interference.

[0060] In this embodiment, the first preset duration, the second preset duration, and the third preset duration can be set according to the actual situation.

[0061] Optionally, the potential acquisition device measures the on-state potential and off-state potential with an accuracy of ±5mV, and measures the AC voltage with an accuracy of ±0.1V.

[0062] In this embodiment, the accuracy of potential measurement is improved by setting the measurement precision of the potential acquisition device.

[0063] like Figure 3 As shown, the pipeline potential acquisition and transmission method of this invention includes:

[0064] The communication module receives various control commands from the terminal device; wherein, the control commands are commands that control the corresponding functions of the on / off module and the potential acquisition unit.

[0065] The on / off module controls the on / off relationship between the potential acquisition device, the long-lasting copper sulfate reference electrode, the polarized test piece, and the pipeline line according to the first control command, and controls the corresponding on / off duration.

[0066] The potential acquisition device measures different types of potentials according to the second control command, different on / off durations, and the circuit connection between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline.

[0067] The different types of potentials collected by the potential acquisition device are transmitted to the terminal device through the communication module.

[0068] Optionally, a potential acquisition device measures different types of potentials based on a second control command, different on / off durations, and the continuity of the circuit between the potential acquisition device and the long-life copper sulfate reference electrode, the polarized test piece, or the pipeline, including:

[0069] When the third on / off switch is open and the first on / off switch and the second on / off switch are closed, the AC voltage is measured.

[0070] When the first on / off switch and the third on / off switch are open, the second on / off switch is closed, and the circuit is maintained connected for a first preset time, the potential at the end of the first preset time is taken as the natural potential.

[0071] When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a second preset time, the circuit is instantly disconnected at the end of the third preset time, and the potential at the instantaneous disconnection of the circuit is taken as the power-off potential.

[0072] When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a third preset time, the potential at the end of the third preset time is taken as the energizing potential.

[0073] like Figure 4 As shown, the pipeline protection system of this invention includes the pipeline potential acquisition and transmission device and terminal equipment as described above. The terminal equipment is specifically used for:

[0074] Generate various control commands;

[0075] And manage the safety status of the pipeline based on the point acquisition results fed back by the pipeline potential acquisition and transmission device.

[0076] In this embodiment, the control instructions include a first control instruction and a second control instruction. The first control instruction is to generate the on / off duration of the potential acquisition device and the at least one point when the potential acquisition device is connected to the at least one point, and to control the on / off of the circuit between the potential acquisition device and the at least one point through an on / off switch. The second control instruction is a potential measurement start instruction.

[0077] In this embodiment, the terminal device is a mobile APP. It can wake up the pipeline potential acquisition and transmission device via Bluetooth and start data acquisition. The acquired data is presented and recorded on the mobile phone through the APP. No network or data card is required, and control commands can be input through the mobile APP.

[0078] Optionally, the point acquisition results include AC voltage, on-state potential, off-state potential, and natural potential; the terminal equipment is specifically used for:

[0079] The cathodic protection of the pipeline is judged to meet the standard by comparing the power failure potential with the pipeline polarization level.

[0080] The AC current density is determined based on the AC voltage and the preset value, and the severity of AC interference to the pipeline is judged based on the AC current density.

[0081] The cathodic protection of the pipeline is determined based on the energized potential.

[0082] The presence of static current flowing into or out of the pipe surface and causing corrosion is determined based on the natural potential.

[0083] In this embodiment, staff can detect pipelines based on different types of potentials. The values ​​of different types of potentials are intuitive and accurate, allowing staff to quickly determine whether the pipeline is in a dangerous state, thus ensuring the normal operation of the pipeline.

[0084] Those skilled in the art will recognize that this invention can be implemented as a system, method, or computer program product. Therefore, this disclosure can be embodied in the following forms: it can be entirely hardware, entirely software (including firmware, resident software, microcode, etc.), or a combination of hardware and software, generally referred to herein as a "circuit," "module," or "system." Furthermore, in some embodiments, the invention can also be implemented as a computer program product contained in one or more computer-readable media, which contains computer-readable program code. Computer-readable storage media can be, for example, but not limited to—electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0086] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipeline potential acquisition and transmission device, installed inside a test pile, characterized in that, include: On / off module, communication module, potential acquisition unit, circuit board, long-life copper sulfate reference electrode and polarization test piece; The on / off module, the communication module, and the potential acquisition device are integrated on the circuit board. The communication module is connected to the on / off module and the potential acquisition device respectively. The long-lasting copper sulfate reference electrode and the polarized test piece are buried underground. The potential acquisition device is connected to the long-lasting copper sulfate reference electrode, the polarized test piece, and the pipeline line of the pipeline under test through the on / off module. The communication module is used to receive various control commands from the terminal device; wherein, the control commands are commands to control the on / off module and the potential acquisition unit to perform corresponding functions. The on / off module is used to control the on / off relationship between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece and the pipeline line according to the first control command, and to control the corresponding on / off duration. The potential acquisition device is used to measure different types of potentials according to the second control command, different on / off durations, and the circuit connection between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline. The communication module is used to transmit different types of potentials collected by the potential acquisition device to the terminal device; The on / off module includes an on / off controller and multiple on / off switches; The communication module is connected to the on / off controller. The potential acquisition device is connected to the long-lasting copper sulfate reference electrode through a first on / off switch, to the polarized test piece through a second on / off switch, and to the pipeline line through a third on / off switch. The on / off controller is connected to the first on / off switch, the second on / off switch, and the third on / off switch respectively. The potential acquisition device is specifically used for: When the third on / off switch is open and the first on / off switch and the second on / off switch are closed, the AC voltage is measured. When the first on / off switch and the third on / off switch are open, the second on / off switch is closed, and the circuit is maintained connected for a first preset time, the potential at the end of the first preset time is taken as the natural potential. When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a second preset time, the circuit is instantly disconnected at the end of the second preset time, and the potential at the instantaneous disconnection of the circuit is taken as the power-off potential. When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a third preset time, the potential at the end of the third preset time is taken as the energizing potential. The device also includes multiple reference tubes; The long-lasting copper sulfate reference electrode is disposed at one end of the first reference tube, and the potential acquisition device extends from the other end of the first reference tube to the inside of the first reference tube via a wire through a switching module, and is connected to the long-lasting copper sulfate reference electrode at the other end of the first reference tube. The polarization test piece is disposed at one end of the second reference tube, and the potential acquisition device extends from the other end of the second reference tube into the interior of the second reference tube via a wire through an on / off module, and is connected to the polarization test piece at the other end of the second reference tube.

2. The apparatus according to claim 1, characterized in that, The potential acquisition device measures the on-state and off-state potentials with an accuracy of ±5mV, and measures the AC voltage with an accuracy of ±0.1V.

3. The apparatus according to claim 1, characterized in that, The on / off time is 100-1000ms.

4. The apparatus according to claim 1, characterized in that, The communication module uses Bluetooth.

5. A method for acquiring and transmitting pipeline potential, characterized in that, Based on the pipeline potential acquisition and transmission device according to any one of claims 1 to 4, the method includes: The communication module receives various control commands from the terminal device; wherein, the control commands are commands that control the corresponding functions of the on / off module and the potential acquisition unit. The on / off module controls the on / off relationship between the potential acquisition device, the long-lasting copper sulfate reference electrode, the polarized test piece, and the pipeline line according to the first control command, and controls the corresponding on / off duration. The potential acquisition device measures different types of potentials according to the second control command, different on / off durations, and the circuit connection between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline. The different types of potentials collected by the potential acquisition device are transmitted to the terminal device through the communication module; The on / off module includes an on / off controller and multiple on / off switches; The communication module is connected to the on / off controller. The potential acquisition device is connected to the long-lasting copper sulfate reference electrode through a first on / off switch, to the polarized test piece through a second on / off switch, and to the pipeline line through a third on / off switch. The on / off controller is connected to the first on / off switch, the second on / off switch, and the third on / off switch respectively. Based on the second control command, different on / off durations, and the continuity of the circuit between the potential acquisition device and the long-lasting copper sulfate reference electrode, the polarized test piece, or the pipeline, different types of potentials are measured, including: When the third on / off switch is open and the first on / off switch and the second on / off switch are closed, the AC voltage is measured. When the first on / off switch and the third on / off switch are open, the second on / off switch is closed, and the circuit is maintained connected for a first preset time, the potential at the end of the first preset time is taken as the natural potential. When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a second preset time, the circuit is instantly disconnected at the end of the second preset time, and the potential at the instantaneous disconnection of the circuit is taken as the power-off potential. When the second on / off switch and the third on / off switch are open, the first on / off switch is closed, and the circuit is maintained connected for a third preset time, the potential at the end of the third preset time is taken as the energizing potential. The device also includes multiple reference tubes; The long-lasting copper sulfate reference electrode is disposed at one end of the first reference tube, and the potential acquisition device extends from the other end of the first reference tube to the inside of the first reference tube via a wire through a switching module, and is connected to the long-lasting copper sulfate reference electrode at the other end of the first reference tube. The polarization test piece is disposed at one end of the second reference tube, and the potential acquisition device extends from the other end of the second reference tube into the interior of the second reference tube via a wire through an on / off module, and is connected to the polarization test piece at the other end of the second reference tube.

6. A pipeline protection system, comprising the pipeline potential acquisition and transmission device and terminal equipment as described in any one of claims 1 to 4, characterized in that, The terminal device is specifically used for: Generate various control commands; And manage the safety status of the pipeline based on the point acquisition results fed back by the pipeline potential acquisition and transmission device.

7. The system according to claim 6, characterized in that, The data acquisition results at the points include AC voltage, on-state potential, off-state potential, and natural potential; the terminal equipment is specifically used for: The cathodic protection of the pipeline is judged to meet the standard by comparing the power failure potential with the pipeline polarization level. The AC current density is determined based on the AC voltage and the preset value, and the severity of AC interference to the pipeline is judged based on the AC current density. The cathodic protection of the pipeline is determined based on the energized potential. The presence of static current flowing into or out of the pipe surface and causing corrosion is determined based on the natural potential.

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