Impressed current cathodic protection and monitoring integrated device for jacket

Abstract

The utility model discloses an impressed current cathodic protection and monitoring integrated device for a jacket, which comprises a control center, a protection signal generating unit, a signal feedback device and a monitoring unit. The device has the functions of corrosion protection, protection effect monitoring, protection automatic regulation and control and data real-time display and storage on the ocean jacket. Compared with the traditional sacrificial anode and cathode protection technology, the device has the characteristics of light weight, multiple functions, no pollutant generation, simplicity in installation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of cathode protection and monitoring, in particular to an integrated device for impressed current cathode protection and monitoring of a conduit rack. Background Art

[0002] Seawater is a highly corrosive and complex medium, which poses a great corrosion threat to the steel structure of offshore jackets. At present, the underwater steel structure of offshore jackets mainly adopts sacrificial anode cathodic protection for corrosion protection. The sacrificial anode is heavy, which brings great weight to the jacket. The sacrificial anode protection current cannot be adjusted according to the actual protection needs. Most jackets equipped with sacrificial anodes do not have an installation effect evaluation system, and cannot track and monitor the protection effect of the sacrificial anode in time. After the sacrificial anode is consumed, it is difficult to replace it. When the sacrificial anode is consumed, it dissolves in the seawater and produces a large amount of aluminum, magnesium and other ions, causing certain pollution to the ocean. In view of the shortcomings of the current sacrificial anode cathodic protection, a relatively light-weight, integrated protection and monitoring and non-polluting protection device is needed to effectively protect the offshore jacket. Utility Model Content

[0003] The purpose of the present application is to provide an integrated device for monitoring impressed current cathodic protection of a conductor frame to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] A catheter frame impressed current cathodic protection monitoring integrated device, comprising:

[0006] A protection signal generating unit, the conduit frame is divided into a plurality of protection areas from top to bottom, each protection area is provided with a protection signal generating unit, the protection signal generating unit comprises an integrated cable and an auxiliary anode, a plurality of the auxiliary anodes are fixed on the integrated cable, and the integrated cable is provided in each protection area of ​​the conduit frame;

[0007] Signal feedback device: each protection area is provided with a signal feedback device;

[0008] Monitoring units: each protected area is provided with a monitoring unit;

[0009] The control center includes a signal output self-adjusting device, a signal data acquisition instrument and a data display and storage device. A signal output self-adjusting device is correspondingly provided for each protection area. The signal output self-adjusting device communicates with the auxiliary anode and the signal feedback device, the monitoring unit communicates with the signal data acquisition instrument, and the signal output self-adjusting device and the signal data acquisition instrument communicate with the data display and storage device.

[0010] Furthermore, one of the signal output self-regulating devices is provided with a plurality of parallel signal shunts, and the signal shunts correspond to the auxiliary anodes one by one. The signal output self-regulating device regulates the output current or voltage to each auxiliary anode through the signal shunts.

[0011] Furthermore, the monitoring unit includes a current sensor and a potential monitoring sensor, the current sensor and the potential monitoring sensor are respectively connected to the signal data acquisition instrument for communication, and the current sensor and the potential monitoring sensor are installed on the catheter rack.

[0012] Furthermore, the signal feedback device includes a plurality of potential feedback sensors, and the potential feedback sensors are installed on a catheter rack close to the auxiliary anode.

[0013] Furthermore, the control center is installed on a platform above the water surface of the jacket.

[0014] Furthermore, a signal cable is integrated in the integrated cable, and each auxiliary anode is connected to the signal diverter via the signal cable.

[0015] In summary, the technical effects and advantages of the utility model are as follows: the utility model has the integrated functions of corrosion protection and monitoring, is light in weight, does not cause pollution to the sea, and can provide effective protection for the offshore jacket steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of a catheter frame impressed current cathodic protection monitoring integrated device in one embodiment of the utility model;

[0018] Figure 2 This is an operation circuit diagram of a catheter rack impressed current cathodic protection monitoring integrated device in one embodiment of the utility model.

[0019] in,

[0020] 1. Control center; 2.1. Integrated cable; 2.2. Auxiliary anode; 3.1. Potential monitoring sensor; 3.2. Current sensor; 4. Potential feedback sensor; 5. Signal cable; 6. Pile leg A; 7. Pile leg B. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] This embodiment provides a catheter frame impressed current cathodic protection monitoring integrated device, such as Figure 1-Figure 2 As shown, it includes a protection signal generating unit, a signal feedback device, a monitoring unit and a control center 1. The control center 1 is installed in a platform above the water surface of the conductor frame, and the protection signal generating unit (integrated cable 2.1 and auxiliary anode 2.2), the monitoring unit (potential monitoring sensor 3.1 and current sensor 3.2) and the potential feedback sensor 4 are installed below the water surface. These devices below the water surface are connected to various devices of the control center 1 through a signal cable 5. The signal cable 5 is sealed in a steel protective pipe, and the steel protective pipe is fixed on the conductor frame.

[0026] The control center 1 includes multiple signal output self-adjusting devices, multiple signal shunts, a signal data acquisition instrument and a data display and storage device. The signal data acquisition instrument is responsible for monitoring signal acquisition. One protection area is equipped with a signal output self-adjusting device. One signal output self-adjusting device is equipped with multiple parallel signal shunts. The signal shunts correspond to the auxiliary anodes 2.2 one by one. The signal output self-adjusting device adjusts the output current or voltage to each auxiliary anode 2.2 through the signal shunt.

[0027] The conductor frame is divided into multiple protection areas from top to bottom, and each protection area is provided with a protection signal generating unit, which includes an integrated cable 2.1 and an auxiliary anode 2.2. Several auxiliary anodes 2.2 are fixed on the integrated cable 2.1, and the integrated cable 2.1 is fixed on the pile legs on two opposite sides corresponding to each protection area of ​​the conductor frame. The integrated cable 2.1 is arranged in each protection area of ​​the conductor frame, for example, the two ends of the integrated cable 2.1 are respectively fixed on the two pile legs of the conductor frame or other auxiliary structures on the opposite sides of the conductor frame; the arrangement of the integrated cable 2.1 should be conducive to the maximum protection of the protection area. The integrated cable 2.1 is integrated with a signal cable 5 and a steel core, and each auxiliary anode 2.2 is connected to the signal diverter through the signal cable 5. The signal cable 5 of the integrated cable 2.1 is led out of the water along the conductor frame pile leg A6 and connected to the signal diverter of the control center 1. The negative pole of the signal output self-adjusting device is connected to the conductor frame through the cathode cable, and the positive pole of the signal output self-adjusting device is connected to the auxiliary anode through the signal diverter and the signal cable of the integrated cable.

[0028] A signal feedback device is provided in each protection area; the signal feedback device includes a plurality of potential feedback sensors 4, which are installed on the catheter frame close to the auxiliary anode 2.2, preferably installed on the catheter frame closest to the auxiliary anode 2.2, and at least one potential feedback sensor 4 is installed in each protection area. The potential feedback sensor 4 is fixed on the catheter frame leg A6 or leg B7 or other positions of the catheter frame, and the potential feedback sensor 4 is connected to the signal output self-adjusting device of the control center 1 through a signal cable 5, and the signal output self-adjusting device is connected to the data display and storage device.

[0029] A monitoring unit is provided in each protection area; the monitoring unit includes a current sensor 3.2 and a potential monitoring sensor 3.1, and the current sensor 3.2 and the potential monitoring sensor 3.1 are respectively connected to the signal data acquisition instrument for communication, and the current sensor 3.2 and the potential monitoring sensor 3.1 are installed on the conduit frame. The potential monitoring sensor 3.1 is installed in representative areas at the weakest and strongest positions of the protection electric field according to the distribution of the protection electric field; the current sensor 3.2 is divided into an anode current sensor 3.2 and a cathode current sensor 3.2, which are installed on the conduit frame according to actual needs. The potential monitoring sensor 3.1 and the current sensor 3.2 are fixed on the conduit frame leg A6 or leg B7 or other positions of the conduit frame, and the potential monitoring sensor 3.1 and the current sensor 3.2 are connected to the signal data acquisition instrument of the control center 1 through a signal cable 5, and the signal data acquisition instrument is connected to the data display and storage device.

[0030] The conductor rack is divided into multiple protection areas, each of which has an independent protection system, which consists of the following devices: monitoring unit (potential monitoring sensor 3.1 and current sensor 3.2), signal feedback device, protection signal generating unit (integrated cable 2.1 and auxiliary anode 2.2), signal splitter and signal cable 5. Multiple monitoring units and signal data acquisition instruments form a monitoring system to perform unified data acquisition and zoning management on the conductor rack protection area. Each protection area has the integrated protection and monitoring functions. The control center 1 centrally manages each protection area, and the devices in each protection area operate in parallel.

[0031] The signal output self-adjusting device provides protection current to each auxiliary anode 2.2 through a signal shunt, and the auxiliary anode 2.2 sends the protection current to the conductor frame through the seawater medium to protect the conductor frame. The signal feedback device feeds back the conductor frame protection feedback potential to the signal output self-adjusting device. If the feedback signal exceeds the preset threshold, the signal feedback device will automatically adjust the output current / output voltage to return the conductor frame protection feedback potential to within the threshold range; at the same time, the monitoring unit performs real-time dynamic monitoring of the protection status of each position of the conductor frame and collects status data. If a certain value in the collected data exceeds the threshold, the data will be fed back to the signal output self-adjusting device through the signal data acquisition instrument and the data display and storage device, and the signal output self-adjusting device will make automatic adjustments to the output current / output voltage. One signal output self-adjusting device corresponds to multiple signal diverters, and one signal diverter corresponds to an auxiliary anode 2.2, so that one signal output self-adjusting device can output a protection current signal for a protection area, and can accurately control the output current of each auxiliary anode 2.2; the entire marine jacket can be divided into multiple protection areas, so that the output current, output voltage, protection feedback potential, monitoring potential and other signal parameters of each area can be individually regulated and displayed, and the signal output self-adjusting device of each area has the function of automatic adjustment of protection potential, protection potential threshold setting function and signal (output current, output voltage and protection potential) size adjustment function. When the protection potential signal feedback value fed back by the potential feedback sensor 4 exceeds the threshold, the signal output self-adjusting device automatically adjusts the output information so that the jacket meets the protection requirements. All signal data are displayed and stored in real time on the data display and storage device, and the data is displayed in module partitions based on the protection area. The data displayed in each partition includes: date / time, output voltage, output current, protection current, protection potential, feedback protection potential, monitoring potential and the depth value corresponding to each underwater signal. All the above underwater monitoring data are displayed in real time and dynamically in the form of a combination of graph (jacket graph) and number.

[0032] In this embodiment, the signal feedback device, signal shunt, integrated cable, auxiliary anode, potential feedback sensor, current sensor, potential monitoring sensor, data signal acquisition instrument, and signal cable are all commercially available products.

[0033] In summary, this embodiment has the integrated functions of corrosion protection and monitoring, is light in weight, does not cause pollution to the sea, and can provide effective protection for the offshore jacket steel structure.

[0034] Although the preferred implementation cases of the utility model have been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the utility model, ordinary technicians in this field can also make many forms of specific changes without departing from the scope of protection of the utility model and the claims, all of which fall within the scope of protection of the utility model.

Claims

1. A catheter frame impressed current cathodic protection monitoring integrated device, characterized in that: include: A protection signal generating unit, the conduit frame is divided into a plurality of protection areas from top to bottom, each protection area is provided with a protection signal generating unit, the protection signal generating unit comprises an integrated cable and an auxiliary anode, a plurality of the auxiliary anodes are fixed on the integrated cable, and the integrated cable is provided in each protection area of ​​the conduit frame; Signal feedback device: each protection area is provided with a signal feedback device; Monitoring units: each protected area is provided with a monitoring unit; The control center includes a signal output self-adjusting device, a signal data acquisition instrument and a data display and storage device. A signal output self-adjusting device is correspondingly provided for each protection area. The signal output self-adjusting device communicates with the auxiliary anode and the signal feedback device, the monitoring unit communicates with the signal data acquisition instrument, and the signal output self-adjusting device and the signal data acquisition instrument communicate with the data display and storage device.

2. The integrated device for monitoring impressed current cathodic protection of a conduit according to claim 1, characterized in that: One of the signal output self-adjusting devices is provided with a plurality of parallel signal shunts, and the signal shunts correspond to the auxiliary anodes one by one. The signal output self-adjusting device adjusts the output current or voltage to each auxiliary anode through the signal shunts.

3. The integrated device for monitoring impressed current cathodic protection of a conduit according to claim 1, characterized in that: The monitoring unit comprises a current sensor and a potential monitoring sensor, the current sensor and the potential monitoring sensor are respectively connected to the signal data acquisition instrument for communication, and the current sensor and the potential monitoring sensor are installed on the catheter frame.

4. The integrated device for monitoring impressed current cathodic protection of a conduit according to claim 1, characterized in that: The signal feedback device comprises a plurality of potential feedback sensors, and the potential feedback sensors are installed on a catheter frame close to the auxiliary anode.

5. The integrated device for monitoring impressed current cathodic protection of a conduit according to claim 1, characterized in that: The control center is installed on a platform above the water surface of the jacket.

6. The integrated device for monitoring impressed current cathodic protection of a conduit according to claim 2, characterized in that: The integrated cable is integrated with a signal cable, and each auxiliary anode is connected to the signal diverter via the signal cable.

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