CN211478435U - Pipeline anti-corrosion system - Google Patents
Pipeline anti-corrosion system Download PDFInfo
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- CN211478435U CN211478435U CN201820109585.4U CN201820109585U CN211478435U CN 211478435 U CN211478435 U CN 211478435U CN 201820109585 U CN201820109585 U CN 201820109585U CN 211478435 U CN211478435 U CN 211478435U
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Abstract
The application relates to a pipeline anti-corrosion system, which comprises a sacrificial anode, data acquisition equipment and a server. The data acquisition device includes: the current sensing module is used for measuring the current values between the sacrificial anode and different positions of the pipeline; the voltage acquisition module is used for measuring voltage values between the sacrificial anode and different positions of the pipeline; and the wireless network communication module is used for sending the acquired current values and voltage values between different positions of the sacrificial anode and the pipeline to a server according to a preset frequency. The data acquisition equipment can simultaneously measure multiple groups of current values and voltage values between different positions of the sacrificial anode and the pipeline, and improves the accuracy of the evaluation of the residual life of the sacrificial anode. Meanwhile, multiple devices are not needed for measurement, so that the measurement cost is effectively reduced.
Description
Technical Field
The utility model relates to a pipeline field of protecting against corrosion, especially data acquisition equipment and online monitored control system.
Background
Pipelines buried in urban underground for transporting energy sources such as gas and oil or for heating are generally made of metal materials such as stainless steel. Due to the complex underground environment, the pipeline is easily corroded and damaged by factors such as moisture, acid and alkali, and the like, so that the content in the pipeline is leaked, and the life and property safety of people is threatened. The existing pipeline corrosion prevention mode is mainly characterized in that a more active metal (namely a sacrificial anode) is externally connected to a pipeline, so that the corrosion of the environment to the pipeline is shown as the corrosion to the sacrificial anode, and the pipeline is protected. Once the sacrificial anode has been corroded, the pipe will thus be unprotected. The corrosion rate of a sacrificial anode is environmentally relevant and is typically buried underground, so that its residual mass is not readily observable in time. When the sacrificial anode is consumed, the manager can not know the sacrificial anode in time. Therefore, the real-time online monitoring of the residual service life of the pipeline sacrificial anode is of great significance.
In a traditional monitoring system for the remaining life of a sacrificial anode of a pipeline, a group of measuring points are selected on a connecting line between the sacrificial anode and the pipeline, a sampling resistor with known resistance is externally connected between the two measuring points, and the current flowing through the resistor, namely the current between the sacrificial anode and the pipeline, is obtained by measuring the voltage at the two ends of the sampling resistor through calculation. And calculating the number of transferred electrons in the corrosion reaction process according to the current between the sacrificial anode and the pipeline, further determining the number of sacrificial anode atoms participating in the corrosion reaction by combining a chemical reaction formula, calculating the consumption quality of the sacrificial anode, and finally obtaining the residual quality of the sacrificial anode.
In the process of realizing the conventional technology, the utility model discloses a find that there is following problem at least: the wiring between the sacrificial anode and the pipeline is complex, and if only one measuring point is selected on the connecting line between the sacrificial anode and the pipeline, the measuring result is not accurate enough. Once a plurality of measuring points need to be measured, a plurality of devices need to be arranged, and the measuring cost is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a pipe corrosion prevention system for solving the above technical problems.
The application provides a pipeline anti-corrosion system, which comprises a sacrificial anode, data acquisition equipment and a server;
the sacrificial anode is externally connected to the pipeline and used for preventing the pipeline from being corroded;
the data acquisition device comprises: the current sensing module is provided with a plurality of output ports and is used for measuring the current values between different positions of the sacrificial anode and the pipeline; the voltage acquisition module is provided with a plurality of channels and is used for measuring voltage values between the sacrificial anode and different positions of the pipeline; the wireless network communication module is used for sending the acquired current values and voltage values between different positions of the sacrificial anode and the pipeline to a server according to a preset frequency;
and the server is used for receiving the current value and the voltage value and determining the residual life of the sacrificial anode according to the current value and the voltage value.
In one embodiment, the method further comprises the following steps:
the voltage conversion chip is used for disconnecting the power supplies of the wireless network communication module and the current sensing module according to a preset time interval;
and the main control chip is used for activating the power supplies of the wireless network communication module and the current sensing module according to a preset time interval.
In one embodiment, the method further comprises the following steps:
and the clock module is used for generating a clock signal and providing real-time.
In one embodiment, the current sensing module comprises at least two hall current sensors.
In one embodiment, the hall current sensor is at least one of an open-loop current sensor and a closed-loop current sensor.
In one embodiment, the wireless network communication module is at least one of a GPRS wireless communication module, a 3G wireless communication module, a 4G wireless communication module, and a WIFI wireless communication module.
In one embodiment, the method further comprises the following steps: and the front-end interaction equipment is used for allowing a user to check the residual service life of the sacrificial anode in the server on line.
In one embodiment, the server is further configured to send alarm information to the front-end interaction device when the remaining life of the sacrificial anode reaches a preset threshold.
The data acquisition equipment and the online monitoring system can simultaneously measure a plurality of groups of current values and voltage values between different positions of the sacrificial anode and the pipeline, and improve the accuracy of the evaluation of the residual life of the sacrificial anode. Meanwhile, multiple devices are not needed for measurement, so that the measurement cost is effectively reduced.
Drawings
FIG. 1 is a block diagram of a data acquisition device provided in one embodiment of the present application;
FIG. 2 is a block diagram of a data acquisition device according to another embodiment of the present application;
FIG. 3 is an architecture diagram of an online monitoring system provided by one embodiment of the present application;
fig. 4 is an architecture diagram of an online monitoring system according to another embodiment of the present application.
101 current sensing module
102 voltage acquisition module
103 wireless network communication module
104 control module
105 outer casing
106 cell
200 server
300 front-end interaction device
301 graphic interaction interface
310 user computer
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Pipes buried underground for transporting energy or for heating are generally made of a metal material and are susceptible to corrosion. The main stream of anticorrosion methods is to connect a sacrificial anode externally to the pipeline and to protect the pipeline by corroding the sacrificial anode. However, since the sacrificial anode is buried underground, it is difficult to observe the corrosion in time.
One embodiment of the present application, as shown in fig. 1, provides a data acquisition apparatus 100, comprising: current sensing module 101, voltage acquisition module 102 and wireless network communication module 103, wherein:
and the current sensing module 101 is used for measuring the current value between the sacrificial anode and different positions of the pipeline.
And the voltage acquisition module 102 is used for measuring voltage values between the sacrificial anode and different positions of the pipeline.
And the wireless network communication module 103 is used for sending the acquired current values and voltage values between different positions of the sacrificial anode and the pipeline to the server according to a preset frequency.
Specifically, the current sensing module 101 has a plurality of output ports for connecting different measurement points on the connection line between the sacrificial anode and the pipeline, so as to measure the current between the sacrificial anode and the pipeline at different positions. The voltage acquisition module 102 has a plurality of channels capable of measuring voltage values between the sacrificial anode and different locations of the pipe. The wireless network communication module 103 may be a GPRS wireless communication module, a 3G wireless communication module, a 4G wireless communication module, or a WIFI wireless communication module.
The data acquisition equipment 100 can simultaneously measure multiple groups of current values and voltage values between different positions of the sacrificial anode and the pipeline, and improves the accuracy of the evaluation of the residual life of the sacrificial anode. Meanwhile, multiple devices are not needed for measurement, so that the measurement cost is effectively reduced.
In one embodiment, the current sensing module 101 includes at least two hall current sensors.
In particular, each hall current sensor may measure the current value at one measurement point between the sacrificial anode and the pipe. Therefore, a plurality of current values between different positions of the sacrificial anode and the pipeline can be measured by a plurality of Hall current sensors.
The Hall current sensor is used for introducing current from a current control end of the Hall element and applying a magnetic field in the normal direction of the plane where the Hall element is located. According to the Hall effect principle, Hall voltage formed between two end faces of the Hall element is in direct proportion to current introduced from the current control end. Therefore, the current magnitude of the current control terminal can be obtained by measuring the magnitude of the hall voltage.
Alternatively, the hall current sensor may be an open-loop current sensor (i.e., a direct current sensor) or a closed-loop current sensor (i.e., a magnetic balance type current sensor).
In one embodiment, a hall current sensor is taken as an open-loop current sensor for illustration. In this embodiment, a lead is led out from the magnetic ring of each open-loop current sensor as a detection line, and the detection lines of different open-loop current sensors are connected to different measurement points of the connecting lines of different sacrificial anodes and pipelines through output ports, so that currents to be measured are introduced into the detection lines. The current to be measured generates a magnetic field in the surroundings. Under the action of a magnetic field, Hall voltage is generated between the two end faces by the Hall element at the air gap of the magnetic ring. The detection line current proportional to the Hall voltage, that is, the current of a measurement point between the sacrificial anode and the pipeline, can be further calculated by measuring the Hall voltage.
In another embodiment, a hall current sensor is taken as an example of a closed-loop current sensor. The difference between the closed-loop current sensor and the open-loop current sensor is that a secondary compensation coil is wound on the magnetic ring. In the embodiment, a lead wire is wound on a magnetic ring of the closed-loop current sensor as a detection wire. Wherein, the detection line and the secondary side compensation coil are respectively wound on the opposite sides of the magnetic ring. And connecting the detection lines of different closed-loop current sensors to different measurement points of connecting lines of different sacrificial anodes and pipelines through output ports, so that currents to be detected are introduced into the detection lines. The current to be measured generates a magnetic field in the surroundings. The magnetic field generated by the secondary side compensation coil is equal to the magnetic field generated by the current to be measured in magnitude and opposite in direction, so that the Hall element at the air gap of the magnetic ring is in a magnetic balance state. The product of the current to be detected in the detection wire and the number of turns of the detection wire is equal to the product of the current in the secondary side compensation coil and the number of turns of the secondary side compensation coil. The current of the secondary side compensation coil can be further calculated by measuring the Hall voltage of the Hall element. The current of the detection line, namely the current of a measuring point between the sacrificial anode and the pipeline can be further calculated through the current of the secondary side compensation coil and the number of turns.
In this embodiment, the data acquisition device 100 employs the hall current sensor, and the resistor is no longer required to be connected to the loop formed by the pipeline and the sacrificial anode, so that non-contact detection can be realized, the original detected signal is not affected, and the measurement result is accurate. In addition, by arranging the detection lines in the current sensing module 101 in advance, the inconvenient operation of directly inserting the sacrificial anode and the pipeline connecting line into the magnetic ring or winding the sacrificial anode and the pipeline connecting line on the magnetic ring can be avoided, and the measurement efficiency is improved.
In one embodiment, the voltage acquisition module 102 may be a multi-channel voltage acquisition module, and in this embodiment, the voltage acquisition module 102 is described by taking an AD7606 chip as an example.
The AD7606 chip is a 16-bit synchronous sampling AD chip. The AD7606 chips of different models have different channel numbers, which can be 8 channels, 6 channels or 4 channels. In one embodiment, the AD7606 multi-channel voltage acquisition module has 6 acquisition channels. At least two collecting channels are used for measuring the Hall voltage of the Hall element in the current sensing module 101, and the rest collecting channels are used for measuring the voltage values between the sacrificial anode and different positions of the pipeline.
In the present embodiment, the data acquisition apparatus 100 improves the reliability of acquired voltage data by using an AD7606 chip having a 16-bit analog-to-digital conversion circuit as the voltage acquisition module 102.
In one embodiment, the wireless network communication module 103 is at least one of a GPRS wireless communication module, a WIFI wireless communication module, and a 4G mobile data communication module. Therefore, the wireless network communication module 103 can transmit the voltage and current data between the sacrificial anode and the pipeline, which is collected in real time, to the server 200, so that the server 200 can store and calculate the voltage and current data.
In one embodiment, the data acquisition device 100 further comprises a voltage conversion chip and a main control chip.
And the voltage conversion chip is used for disconnecting the power supplies of the wireless network communication module 103 and the current sensing module 101 according to a preset time interval.
And the main control chip is used for activating the power supplies of the wireless network communication module 103 and the current sensing module 101 according to a preset time interval.
The preset time interval refers to a work cycle of the data acquisition device 100, that is, the time required for the data acquisition device 100 to complete the complete process of acquiring and transmitting the voltage and current data between the sacrificial anode and the pipeline and performing the sleep.
In one embodiment, assume that data acquisition device 100 has a one minute duty cycle. In a working period, the data acquisition device 100 firstly acquires and transmits voltage and current data between the sacrificial anode and the pipeline, and then the voltage conversion chip disconnects the power supply of the wireless network communication module 103 and the current sensing module 101, so that the data acquisition device enters a dormant state. In the sleep state, the operating current of the data acquisition device 100 is less than 1 mA. When the next working cycle comes, the main control chip activates the power supplies of the wireless network communication module 103 and the current sensing module 101, the data acquisition device 100 enters a working state, and acquires and transmits voltage and current data between the sacrificial anode and the pipeline again.
In this embodiment, the data acquisition device 100 realizes the switching between the working state and the sleep state through the voltage conversion chip and the main control chip, thereby effectively reducing the power consumption. In addition, compared with a data acquisition device assembled by low-power-consumption devices, the data acquisition device 100 provided by the embodiment reduces the design cost.
In one embodiment, the data acquisition device 100 further comprises a clock module. The clock module is used for generating a clock signal and providing real-time, so that the voltage conversion chip and the main control chip can disconnect and activate the power supplies of the wireless network communication module 103 and the current sensing module 101 at preset time intervals.
Specifically, the Clock module may be an RTCC (Real Time Clock and calendar) Clock module.
In one embodiment, the data acquisition device 100 further comprises a control module 104. The control module 104 is electrically connected to the current sensing module 101, the voltage collecting module 102 and the wireless network communication module 103. The control module 104 is equivalent to a central processing unit of the data acquisition device 100, and is used for controlling the behaviors of the current sensing module 101, the voltage acquisition module 102 and the wireless network communication module 103 as a whole.
In particular, the control module 104 may be a PIC24 microcontroller.
In a specific embodiment, as shown in fig. 2, the data acquisition device 100 mainly includes a current sensing module 101, a voltage acquisition module 102, a wireless network communication module 103 and a control module 104. In this embodiment, the current sensing module 101 is exemplified by using two hall current sensors, and the current to be measured, which is proportional to the hall voltage, is calculated by measuring the hall voltage of the hall element, that is, the current of a measurement point between the sacrificial anode and the pipeline. The voltage acquisition module 102 employs an AD7606 chip with 6 data acquisition channels. Two data acquisition channels are used for measuring the hall voltage of the hall element in the current sensing module 101, and the remaining acquisition channels are used for measuring the voltage values between the sacrificial anode and different positions of the pipeline. The wireless network communication module 103 is at least one of a GPRS wireless communication module, a WIFI wireless communication module, and a 4G mobile data communication module. The wireless network communication module 103 can send the voltage and current data between the sacrificial anode and the pipeline collected in real time to the server, so that the server can store and calculate the voltage and current data. The control module 104 adopts a PIC24 microcontroller, which is equivalent to a central processing unit of the data acquisition device 100, and is used for controlling the behaviors of the current sensing module 101, the voltage acquisition module 102 and the wireless network communication module 103 as a whole.
The data acquisition device 100 further includes a voltage conversion chip and a main control chip. The voltage conversion chip is used for disconnecting the power supplies of the wireless network communication module 103 and the current sensing module 101 according to a preset time interval. The main control chip is used for activating the power supplies of the wireless network communication module 103 and the current sensing module 101 according to a preset time interval. In a working period, the data acquisition device 100 firstly acquires and transmits voltage and current data between the sacrificial anode and the pipeline, and then the voltage conversion chip disconnects the power supply of the wireless network communication module 103 and the current sensing module 101, so that the data acquisition device enters a dormant state. In the dormant state, the working current of the data acquisition equipment is less than 1 mA. When the next working cycle comes, the main control chip activates the power supplies of the wireless network communication module 103 and the current sensing module 101, the data acquisition equipment enters a working state, and the voltage and current data between the sacrificial anode and the pipeline are acquired and sent again.
In one embodiment, the data acquisition device 100 further includes a housing 105 for housing all of the modules; a battery 106 for powering the entire device may also be included; the data acquisition device 100 may further include an output port 107, so that the detection lines of different hall current sensors may be respectively connected to the output port 107, and then connected to different sacrificial anodes and pipe connection lines to detect the current of the corresponding measurement point, thereby avoiding the inconvenient operation of directly inserting the sacrificial anode and pipe connection lines into the magnetic ring or winding the sacrificial anode and pipe connection lines on the magnetic ring, and improving the measurement efficiency.
One embodiment of the present application provides an online monitoring system, as shown in fig. 3, for monitoring the remaining life of a sacrificial anode in a pipeline, comprising:
the data acquisition device 100 is used for measuring signal data between the sacrificial anode and different positions of the pipeline and sending the signal data to the server 200.
And a server 200 for receiving the signal data and determining the remaining life of the sacrificial anode based on the signal data.
The signal data comprises current values and voltage values between different positions of the sacrificial anode and the pipeline. The server 200 may be implemented as a stand-alone server or as a server cluster comprising a plurality of servers.
In detail, the data collecting apparatus 100 is connected to different measuring points of different sacrificial anode-to-pipe connection lines through the output port, measures voltage and current data between different positions of the sacrificial anode and the pipe, and transmits the collected voltage and current data between the sacrificial anode and the pipe to the server 200 according to a preset frequency. After the server 200 receives the voltage and current data between the sacrificial anode and the pipeline, the remaining life of the sacrificial anode is determined according to a preset algorithm.
In one embodiment, the online monitoring system further comprises: the front-end interaction device 300. The front-end interaction device 300 is used for a user to view the remaining life of the sacrificial anode in the server 200 online.
The front-end interaction device 300 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In one embodiment, the user actively queries the remaining life of the sacrificial anode through the front-end interaction device 300.
In detail, the user logs in the server 200 through the front-end interaction device 300, and the server 200 presents the remaining life of the sacrificial anode queried by the user through the graphical interaction interface 301 of the front-end interaction device 300. Notably, a user may also query the voltage and current data between the sacrificial anode and the pipe via the front-end interaction device 300.
In another embodiment, the server 200 actively pushes the remaining lifetime of the sacrificial anode to the front-end interaction device 300.
In detail, after the server 200 calculates the lifetime of the sacrificial anode according to the voltage and current values between the sacrificial anode and the pipeline collected by the data collection device 300, the server actively pushes the lifetime information of the sacrificial anode to the front-end interaction device 300. The front-end interactive device 300 presents the sacrificial anode life information through the graphical interactive interface 301 for the user to view. It is noted that the server 200 may also push the voltage and current data between the sacrificial anode and the pipe directly.
In one embodiment, the server 200 is further configured to send an alarm message to the front-end interaction device 300 when the remaining lifetime of the sacrificial anode reaches a preset threshold.
In detail, the server 200 compares the remaining life of the sacrificial anode with a preset threshold after determining the remaining life of the sacrificial anode according to the voltage between the sacrificial anode and the pipe and the circuit data collected by the data collecting apparatus 100. When the remaining life of the sacrificial anode is less than or equal to the preset threshold, the server 200 sends an alarm message to the front-end interaction device 300, and prompts the user to supplement or replace the existing sacrificial anode in time.
In one particular embodiment, the online monitoring system includes a data collection device 100, a server 200, and a user computer 310. The data acquisition device 100 is connected to different measurement points of connecting lines of different sacrificial anodes and pipelines through an output port, and the current sensing module 101 and the voltage acquisition module 102 are used for respectively measuring voltage and current data between the sacrificial anodes and the pipelines. Next, the data collection device 100 transmits the voltage and current data to the server 200 through the wireless network communication module 103. The server 200 receives the voltage and current data and determines the remaining life of the sacrificial anode according to a preset algorithm. The server 200 compares the obtained remaining life of the sacrificial anode with a preset threshold, and when the remaining life of the sacrificial anode is less than or equal to the preset threshold, the server 200 sends alarm information to the user computer 310, and the user computer 310 presents prompt information through the graphical interaction interface 301 to remind the user to replenish or replace the existing sacrificial anode in time. It is noted that the server 200 may also push the voltage and current data between the sacrificial anode and the pipe directly. When the user needs to inquire the remaining life information of the sacrificial anode, the user can log in the server 200 through the user computer 310 to check the remaining life of the sacrificial anode online. It is noted that a user may also query the voltage and current data between the sacrificial anode and the pipe via the user computer 310.
The data acquisition equipment 100 and the online monitoring system can simultaneously measure a plurality of groups of current values and voltage values between different positions of the sacrificial anode and the pipeline, and the accuracy of the evaluation of the residual life of the sacrificial anode is improved. Meanwhile, multiple devices are not needed for measurement, so that the measurement cost is effectively reduced.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A pipeline anti-corrosion system is characterized by comprising a sacrificial anode, data acquisition equipment and a server;
the sacrificial anode is externally connected to the pipeline and used for preventing the pipeline from being corroded;
the data acquisition device comprises: the current sensing module is provided with a plurality of output ports and is used for measuring the current values between different positions of the sacrificial anode and the pipeline; the voltage acquisition module is provided with a plurality of channels and is used for measuring voltage values between the sacrificial anode and different positions of the pipeline; the wireless network communication module is used for sending the acquired current values and voltage values between different positions of the sacrificial anode and the pipeline to a server according to a preset frequency;
and the server is used for receiving the current value and the voltage value and determining the residual life of the sacrificial anode according to the current value and the voltage value.
2. The pipe corrosion protection system of claim 1, further comprising:
the voltage conversion chip is used for disconnecting the power supplies of the wireless network communication module and the current sensing module according to a preset time interval;
and the main control chip is used for activating the power supplies of the wireless network communication module and the current sensing module according to a preset time interval.
3. The pipe corrosion protection system of claim 2, further comprising:
and the clock module is used for generating a clock signal and providing real-time.
4. The pipe corrosion protection system of any of claims 1 to 3, wherein said current sensing module comprises at least two Hall current sensors.
5. The pipe corrosion protection system of claim 4, wherein said Hall current sensor is at least one of an open loop current sensor, a closed loop current sensor.
6. The pipeline corrosion protection system of claim 4, wherein the wireless network communication module is at least one of a GPRS wireless communication module, a 3G wireless communication module, a 4G wireless communication module, and a WIFI wireless communication module.
7. The pipe corrosion protection system of claim 1, further comprising: and the front-end interaction equipment is used for allowing a user to check the residual service life of the sacrificial anode in the server on line.
8. The pipe corrosion protection system of claim 7, wherein said server is further configured to send an alarm message to said front-end interaction device when the remaining life of said sacrificial anode reaches a preset threshold.
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| CN110058070A (en) * | 2018-01-19 | 2019-07-26 | 深圳信息职业技术学院 | Data acquisition equipment and online monitoring system |
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