KR101351921B1 - Remote control anc monitoring apparatus for corrosion section prevention of gas storage tank, oil storage tank and metal pipe - Google Patents

Abstract

The present invention comprises a rectifier for applying a protection current to a metal structure; a corrosion measurer for measuring the potential of a predetermined measurement point on the metal structure when the protection current is applied from the rectifier; connection parts installed on each measurement point to correspond to each other for electrically connecting insoluble electrodes buried in the measurement points and the ground to the rectifier; and a detection server for controlling the rectifier according to the potential of the metal structure measured in each corrosion measurer when the protection current is applied from the rectifier. The metal structure is one among the gas storage tank, fuel tank, and metal pipeline of a gas station. [Reference numerals] (10,BB) Rectifier; (20) Insoluble electrode; (30) Corrosion measurer; (32) Independent power supply part; (40) Connection part; (50) Repeater; (60) Detection server; (AA) Communication network; (CC,DD,EE,FF,GG) Reference electrode

Description

REMOTE CONTROL ANC MONITORING APPARATUS FOR CORROSION SECTION PREVENTION OF GAS STORAGE TANK, OIL STORAGE TANK AND METAL PIPE}

The present invention relates to a remote control and monitoring device for preventing corrosion of a gas storage tank, a gas station oil tank, and a metal pipe of a gas filling station, and more specifically, to detect and output a corrosion section in which corrosion occurs in a metal structure buried underground. Corrosion prevention remote control and monitoring device for gas storage tank, gas station oil tank and metal pipe of gas filling station.

Generally, structures such as piping and storage means used for the use of fresh water in a water heater, boiler, heat exchanger, etc., and structures such as piping buried in the ground or water for transportation of water, liquefied natural gas, .

Such a metal structure is corroded at the point where current flows out through the electrolyte at its surface. Corrosion is caused by the electrochemical reaction by the movement of electrons, as the material reacts with the surrounding environment to change the material itself or to change the properties of the material.

In order to prevent such corrosion, various methods have been proposed. Recently, electrochemical potential measurement method for measuring the electrochemical potential of metal on the surface of metal in the electrolyte to determine corrosion progress has been most widely used.

The conventional electrochemical potential measurement method compares the potential of a metal structure with a reference potential and judges whether corrosion of the metal structure occurs based on the comparison.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2000-0033818 (Jun. 15, 2000) 'Remote Corrosion Monitoring and Method Control System'.

It is an object of the present invention to provide a corrosion prevention remote control and monitoring apparatus for a gas storage tank, a gas station oil tank and a metal pipe of a gas filling station that detects and outputs a corrosion section of the metal structure using the potential of the metal structure.

Another object of the present invention is to remotely control the corrosion prevention of the gas storage tank and gas station oil tank and metal pipe of the gas filling station to output the corrosion section of the metal structure on the map so that the administrator can easily recognize the corrosion section of the metal structure and It is to provide a monitoring device.

Rectifier for applying the corrosion protection current to the metal structure according to an aspect of the present invention; A corrosion meter for measuring a potential of a predetermined measurement point in the metal structure when a bimodal current is applied from the rectifier; A connection portion provided corresponding to each of the measurement points and electrically connecting the measurement point and the insoluble electrode buried in the ground to the rectifier; And a detection server for controlling the rectifier according to the potential of the metal structure measured by each of the corrosion measuring instruments when the anticorrosive current is applied from the rectifier, wherein the metal structure includes a gas storage tank and a gas station oil tank and a metal pipe of a gas filling station. It is characterized in that any one of the furnace.

In the present invention, the metal structure is the metal pipe, the detection server is characterized by detecting the corrosion section of the metal structure characterized in that the control to apply a method current to the rectifier corresponding to the corrosion section of the rectifier.

In the present invention, the detection server detects a corrosion period based on the magnitude of the potential of the metal structure.

The invention further comprises a terminal for receiving and outputting the position data of the corrosion section from the detection server.

In the present invention, the corrosion section is characterized in that it is displayed on the map of the area where the metal structure is embedded.

In the present invention, the map is characterized in that expressed in any one of the general view, aerial view, satellite view.

In the present invention, the detection server detects a first corrosion expectation period around a first measurement point at which the potential of the metal structure is equal to or less than a predetermined set value by applying a method current through the rectifier at an initial position, Wherein the corrosion current is applied again through the rectifier in the expected corrosion period to detect a second measurement point at which the potential of the metal structure is less than or equal to the preset value and thereafter the first corrosion prediction interval and the first corrosion prediction interval, As a result of the detection.

In the present invention, the detection server may detect an interval in which the first corrosion prediction section overlaps with the second corrosion prediction section as the corrosion section.

The present invention detects and outputs a corrosion section of the metal structure using the potential of the metal structure.

The present invention outputs the corrosion zone of the metal structure on the map so that the administrator can easily recognize the corrosion zone of the metal structure.

The present invention accurately detects the corrosion zone of the metal structure using the potential of the metal structure, and saves time and cost in detecting the corrosion zone.

The present invention makes it possible to perform the method control based on the potential of the metal structure to prevent corrosion of the metal structure.

1 is a block diagram of a corrosion prevention remote control and monitoring device of the gas storage tank and the gas station oil tank and the metal pipe of the gas filling station according to an embodiment of the present invention.
2 is a block diagram of the detection server of FIG.
FIG. 3 is a graph showing potentials of metal structures measured by the corrosion measuring instruments of FIG. 1; FIG.
FIG. 4 is a view illustrating an example of detecting a first corrosion expectation period by using a method current applied from the movable rectifier of FIG.
5 is a view illustrating an example of detecting a second corrosion expectation period by using a method current applied from the movable rectifier of FIG.
6 is a diagram illustrating an example of detecting a corrosion period according to an embodiment of the present invention.
FIG. 7 is a diagram showing an example of expressing a corrosion section on a map through the terminal of FIG. 1. FIG.
FIG. 8 is a flowchart illustrating a process of expressing a corrosion section by a remote control and monitoring apparatus for preventing corrosion of a gas storage tank, a gas station oil tank, and a metal pipe of a gas filling station according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a remote control and monitoring apparatus for preventing corrosion of a gas storage tank, a gas station oil tank, and a metal pipe of a gas filling station according to an embodiment of the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a block diagram of a corrosion prevention remote control and monitoring apparatus for a gas storage tank, a gas station oil tank and a metal pipe of a gas filling station according to an embodiment of the present invention, and FIG. 2 is a block diagram of the detection server of FIG. 3 is a diagram illustrating a potential of a metal structure measured by each corrosion meter of FIG. 1, and FIG. 4 is a diagram illustrating an example of detecting a first corrosion expected section by using an anticorrosive current applied from the mobile rectifier of FIG. 1. FIG. 5 is a diagram illustrating an example of detecting a second corrosion expectation interval using a scheme current applied from the mobile rectifier of FIG. 1, and FIG. 6 is an example of detecting a corrosion interval according to an embodiment of the present invention. FIG. 7 is a view illustrating an example of displaying a corrosion section on a map through the terminal of FIG. 1, and FIG. 8 is a gas reservoir of a gas filling station according to an embodiment of the present invention. A flow the corrosion-prevention remote control and monitoring of the tank and a gas station fuel tank and the metal tube apparatus illustrating a process of expressing a corrosion zone.

Referring to FIG. 1, a remote control and monitoring apparatus for preventing corrosion of a gas storage tank, a gas station oil tank, and a metal pipe of a gas filling station according to an embodiment of the present invention includes a mobile rectifier 10 and an insoluble electrode (Hi-Silicon Cast Iron). HSCI) 20, corrosion measuring instrument 30, connecting portion 40, repeater 50, detection server 60 and terminal 70.

The rectifier 10 applies a method current to the metal structure via the soil and the insoluble electrode 20 buried in the ground according to a system command transmitted from the detection server 60 through the relay 50, The metal structure is maintained by keeping it at -850 ㎷ or less with respect to the reference electrode. The rectifier (10) is fixedly installed and can apply a method current at a certain point, but it can also be used as a movable type. Furthermore, the fixed type and the movable type may be mixed. It can be selected variously according to installation position and length of metal structure, installation method, and the like.

Here, 'method' refers to the removal or suppression of one or more of the factors of corrosion of the metal structure. As a method of treating the metal structure, a method of inhibiting the anode or cathode reaction or blocking the flow of electrons or ions by using a corrosion inhibitor, an insulating plate or other methods is used.

In this embodiment, the metal structure is described as an example of a metal pipe. However, the technical scope of the present invention is not limited to this, and can be applied to gas storage tanks of gas filling stations, gas station oil tanks and the like.

In general, the gas storage tank of the gas filling station and the way of the gas station oil tank are substantially similar to the metal tube, and differ only in the structure and form of the metal structure.

Therefore, according to an embodiment of the present invention, the rectifier (10) supplies the gaseous current to the gas storage tank of the gas filling station and the gas station oil tank, and the corrosion meter (32) And measures the potential of the tank and the gas station oil tank, and transfers the measured data to the detection server 60 through the repeater 50.

Accordingly, the detection server 60 stores the measurement data transmitted from the corrosion measuring device 30, remotely controls the rectifier 10, and outputs the terminal 70 to the manager or the like.

For reference, in this embodiment, an example in which an electric method is adopted as a cathod protection method, which is a method of suppressing a positive electrode reaction, will be described as an example. The principle of the electric method is that the corrosion of the metal usually occurs in the portion where the current flows out through the electrolyte from the metal surface, so that a method current (DC current) is artificially introduced into the metal surface through the electrolyte to cause the negative electrode reaction .

For example, when the rectifier 10 is manufactured to be mobile, it may move to various measurement points preset in the metal structure. Thus, the rectifier 10 may be mounted on a moving body such as a vehicle, or may be provided with a moving device or the like itself. Further, in this case, the rectifier 10 may use an independent power source in addition to the conventional AC power source, and a lithium ion battery or a solar power generator may be used as the independent power source.

For reference, the measurement point may be set variously according to the length of the metal structure, and is usually set to an interval of 200 m to 500 m. In the present embodiment, a total of five measurement points including measurement points a, b, c, d, and e are described as an example.

A plurality of corrosion measuring instruments 30 are provided according to measurement points of the metal structure, and each corrosion measuring instrument 30 is installed in a one-to-one correspondence with measurement points of the metal structure.

The corrosion meter 30 measures the potential of the metal structure at the measurement point according to a data collection command transmitted from the detection server 60 through the repeater 50 or a predetermined period, And transmits the data to the detection server 60 via the relay 50. [0043] FIG.

The independent power supply unit 32 supplies power to the corrosion meter 30 described above. As the independent power supply unit 32, various independent power sources such as a lithium ion battery and a hydride layer capacitor for voltage compensation may be employed.

Accordingly, in the case where the metal structure 80 measures the electric potential of a metal pipe ranging from 500 m to 30 km, it is not necessary to provide a separate cable for supplying power to the corrosion measuring device 30, And management costs.

The connection unit 40 is provided corresponding to each measurement point of the metal structure to electrically connect the insoluble electrode 20 buried in the measurement point with the rectifier 10. The connection portion 40 is provided so as to correspond to each measurement point of the metal structure as described above, so that the rectifier 10 can be electrically connected to each measurement point and the insoluble electrode even if the rectifier 10 moves, So that it can be applied to the metal structure through the electrode 20.

The repeater 50 is connected to the communication network and relays data communication between the rectifier 10 and the corrosion meter 30 and the detection server 60. The data transmitted and received through the relay 50 includes data measured by the corrosion meter 30 and control commands transmitted from the detection server 60 to the rectifier 10 and the corrosion meter 30.

The communication network includes a second generation based on CDMA (Code Division Multiple Access), a third generation based on WCDMA (Wideband Code Division Multiple Access), a wireless environment supporting fourth generation or later generation based on LTE (Long Term Evolution) / WiBro, A wired environment supporting Internet Protocol (IP) -based communication technologies such as the Internet, a short-range wireless communication environment such as Wi-Fi, and a Trunked Radio Service (TRS).

For example, the repeater 50 may be selectively employed according to the communication network. For example, when the communication network is CDMA or RF (Radio Frequency), the repeater 50 must be provided. However, There is no need to be employed separately.

The detection server 60 controls the rectifier 10 through the measurement data transmitted from each corrosion measuring instrument 30 to form a metal structure. In this process, the detection server 60 detects the corrosion period using each potential of the metal structure received from the corrosion meter 30, and transmits the detected corrosion period to the terminal 70 to display it on the map .

Referring to FIG. 2, the detection server 60 includes a database unit 61, an output unit 62, and a control unit 63.

The database unit 61 stores map data indicating an area where the metal structure is embedded in the ground and position data of each section corresponding to the position of the metal structure buried in the ground. The map data is provided in various forms such as general view, road view, and aerial view for the convenience of the manager who manages and maintains the metal structure.

The database unit 61 stores the voltage, current, and potential values according to the measurement data transmitted from the corrosion measuring device 30, by place, section, date, and time zone, do.

The output unit 62 expresses the position of the metal structure on the map and distinguishes among the first corrosion expectation section, the second corrosion expectation section and the corrosion section, among the metal structures in particular. In this case, the output unit 62 exposes the first corrosion prediction section, the second corrosion prediction section, and the corrosion section in different colors or images so that the manager can determine the first corrosion prediction section, the second corrosion prediction section, So that the user can easily recognize.

The output unit 62 outputs voltages, currents, and potentials according to the measurement data received from the corrosion meter 30, by place, section, day, and time zone, So that the administrator can easily recognize and manage the state of the metal structure 80. [

The control unit 63 detects the corrosion period of the metal structure based on the potential of the metal structure measured in each of the corrosion measuring instruments 30 at the time of applying the method current from the rectifier 10. [

In this case, the control unit 63 applies the method current through the rectifier 10 at the initial position, and receives the measurement data for the corresponding measurement point from each corrosion measuring instrument 30. FIG. The control unit 63 stores the measurement data received from the corrosion meter 30, that is, the voltage, current, and potential values of the corrosion meter 30, And manages and analyzes the system in a normal, non-system, and over-the-air manner, and outputs the managed system through the terminal 70.

Also, the controller 63 controls the rectifier 10 based on the measurement data of the measurement point from the corrosion meter 30 to output the corrosion current.

Typically, the potential of the metal structure measured by the corrosion meter 30 fluctuates within a predetermined range as measured according to the characteristics of the metal structure itself or the distance from the rectifier 10, as shown in Fig.

However, when corrosion occurs at a certain point, such as the potential of the metal structure with respect to point ⓒ of FIG. 3, it rapidly falls below a predetermined set value.

Here, the set value is a potential value of a metal structure as a basis for judging that corrosion has occurred, and can be variously set according to a material of a metal structure, a transport material, an environmental factor, and the like.

Thus, the control unit 63 detects a first measurement point at which the potential of the metal structure is equal to or lower than a set value, and detects a first corrosion expectation period around the first measurement point.

Referring to FIG. 4, when the potential of the metal structure measured at the point ⓒ drops below the set value, the control unit 63 determines that corrosion occurs between the point ⓑ which is the previous measurement point and the point ο which is the next measurement point, And it is detected as a first corrosion expectation section between the point (b) and the point (d). For reference, metal constructions are buried in the ground, so separate inspection equipment is required to measure the actual corrosion point.

For reference, in the present embodiment will be described as an example that the corrosion occurred between the point ⓒ and the point ⓓ.

After the first corrosion expectation period is detected, the control unit 63 applies the method current again through the rectifier 10 at any one or more of the first corrosion expectation intervals to detect the potential of the metal structure The second measurement point is detected again.

FIG. 5 shows an example in which a method current is applied at a point C in the first corrosion expectation period. Since the corrosion occurs between the point ⓒ and point ⓓ when the method current is applied at the point ⓒ, the potential of the metal structure at the point ⓒ or point ⓓ is measured below the set value according to the direction of the method current, Or ⓓ detecting a second corrosion expected section around the point. In FIG. 5, the potential of the metal structure at the point ⓓ is measured to be less than the set value, and the second corrosion expectation section is detected between the points ⓒ and ⓔ around the point ⓓ.

6, after the first corrosion expectation section and the second corrosion expectation section are detected, the control section 63 determines whether the first corrosion expectation section and the second corrosion expectation section overlap with each other, Is detected as a corrosion zone.

Then, the controller 63 reads the position data and the map data of the point ⓒ and the point ◯, which are corrosion sections, and maps the position data of the points ⓒ and ⓓ to the map data, To express the corrosion zone on the map.

In addition, the controller 63 displays each measurement point on the map, and when any one of the measurement points is selected at this time, data on the measurement point, for example, various measurement data transmitted from the corrosion meter 30, And outputs the various data for the measurement point, such as the method current applied to the point.

The terminal 70 requests various data from the detection server 60 through a communication network and outputs the received data. When the terminal 70 receives the position data of the corrosion section from the detection server 60, the terminal 70 displays the corrosion section on the map or outputs measurement data measured at each measurement point. The terminal 70 may include a variety of terminal devices including a microprocessor, a memory, and various types of terminal devices such as a personal computer, a notebook computer, a tablet PC, a smart phone, and the like that perform various computation processes and can perform data communication through a communication network.

8, the detection server 60 controls the rectifier 10 at an initial position to apply a method current to the metal structure via the insoluble electrode 20 and the soil, The potential of the metal structure measured at each measurement point is transmitted through the repeater 50.

As described above, when the potential of the metal structure measured at each measurement point is transmitted from each of the corrosion meters 30, the detection server 60 compares the potential of the metal structure measured at each measurement point with the set value, A first measurement point at which the potential of the metal structure in the measurement point is less than a predetermined set value is detected, and a first corrosion prediction interval is detected around the first measurement point (S10).

Thereafter, when the rectifier 10 is moved to the first corrosion expectation section, the detection server 60 re-applies the method current through the rectifier 10 at any one or more of the first corrosion expectation sections.

Thus, each of the corrosion measuring devices 30 measures the potential of the metal structure at the measurement point, and transfers the potential of the measured metal structure to the detection server 60 through the relay 50. [

When the potential of the metal structure measured at each measurement point is transmitted from each of the corrosion measuring instruments 30, the detection server 60 compares the potential of the metal structure measured at each measurement point with the set value, And the second corrosion expectation period is detected based on the second measurement point (S20).

As described above, after detecting the first corrosion prediction section and the second corrosion prediction section, the detection server 60 detects the section where the first corrosion prediction section and the second corrosion prediction section overlap as the corrosion section (S30).

After the corrosion section is detected, the detection server 60 exposes the corrosion section on the map using the position data and the map data corresponding to the measurement point of the corrosion section (S40).

In addition, the detection server 60 transmits the position data corresponding to the corrosion period to the terminal 70, and the terminal 70 transmits the position data corresponding to the corrosion period to the terminal 70 in accordance with the position data received from the detection server 60 By displaying the corrosion zone, the administrator can easily recognize the corrosion zone through the terminal 70.

In addition, the detection server 60 displays each measurement point on the map, and when any one of the measurement points is selected at this time, data on the measurement point, for example, various measurement data transmitted from the corrosion meter 30, Outputs various data for the measurement point, such as the method current applied to the measurement point.

In the present invention, direct current is applied to both sides of each section of the metal structure buried underground in the opposite direction, and at this time, the corrosion section is accurately detected by analyzing the measured value measured by each corrosion meter 30.

The present invention eliminates the need for the administrator to detect the corrosion zone while moving along the metal structure, thereby reducing the time and cost required for detecting the corrosion zone.

The present invention makes it possible to perform the method control based on the potential of the metal structure to prevent corrosion of the metal structure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. will be. Accordingly, the true scope of the present invention should be determined by the following claims.

10: rectifier 20: insoluble electrode
30: corrosion meter 32: independent power supply
40: connection 50: repeater
60: detection server 61:
62: output unit 63: control unit
70:

Claims (8)

A rectifier for applying a method current to the metal structure;
A corrosion meter for measuring a potential of a predetermined measurement point in the metal structure when a bimodal current is applied from the rectifier;
A connection portion provided corresponding to each of the measurement points and electrically connecting the measurement point and the insoluble electrode buried in the ground to the rectifier; And
A detection server for controlling the rectifier according to the potential of the metal structure measured by each of the corrosion measuring instruments when the anticorrosive current is applied from the rectifier,
The metal structure is any one of a gas storage tank, a gas station oil tank and a metal pipeline of a gas filling station,
The detection server detects a corrosion section of the metal pipe and controls to apply a method current to a rectifier corresponding to the corrosion section of the rectifier, and detects a corrosion section based on the magnitude of the potential of the metal structure.
And a terminal for receiving and outputting position data of the corrosion section from the detection server, wherein the corrosion section is displayed on a map of a region in which the metal pipeline is buried. Corrosion prevention remote control and monitoring device for oil tanks and metal pipes. delete delete delete delete The corrosion prevention remote control and monitoring device of claim 1, wherein the map is displayed in any one of a general view, an aerial view, and a satellite view of the gas storage tank, a gas station oil tank, and a metal pipe. The method of claim 1, wherein the detection server is applied to the anti-corrosion current through the rectifier at the initial position to detect the first corrosion prediction interval around the first measuring point that the potential of the metal structure is less than a predetermined set value, In the first anticipated corrosion interval, the anticorrosive current is again applied through the rectifier to detect a second measurement point having a potential lower than or equal to the set value, and to detect a second corrosion prediction interval around the second measurement point. Afterwards, the corrosion prevention remote control and monitoring device of the gas storage tank and the gas station oil tank and the metal pipe of the gas filling station, characterized in that the detection via the first corrosion prediction section and the second corrosion prediction section. [8] The gas storage tank, the gas station oil tank and the metal pipe line of the gas filling station according to claim 7, wherein the detection server detects a section in which the first corrosion prediction section and the second corrosion prediction section overlap with the corrosion section. Corrosion prevention remote control and monitoring device.

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