CN111394732A - Impressed current protection device for steel platform of offshore wind power engineering and implementation method thereof - Google Patents
Impressed current protection device for steel platform of offshore wind power engineering and implementation method thereof Download PDFInfo
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- CN111394732A CN111394732A CN202010353169.0A CN202010353169A CN111394732A CN 111394732 A CN111394732 A CN 111394732A CN 202010353169 A CN202010353169 A CN 202010353169A CN 111394732 A CN111394732 A CN 111394732A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/20—Constructional parts or assemblies of the anodic or cathodic protection apparatus
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
Abstract
The invention discloses an impressed current protection device of a steel platform of offshore wind power engineering and an implementation method thereof, belonging to the technical field of impressed current protection of the steel platform, comprising an upper platform protection mechanism and a lower platform protection mechanism, wherein the upper platform protection mechanism is connected with the lower platform protection mechanism through two potentiostats, a potentiostat is used for providing stable current for a steel pipe pile, and a PCCP cathode protection component and an ICCP cathode protection component are matched to jointly realize the rust prevention process of the steel pipe pile, so that the platform collapse caused by the corrosion of the steel pipe pile is avoided, the service life of the platform is prolonged, the PCCP cathode protection component is controlled to move by a single chip microcomputer control circuit board, the scouring and the striking of seawater on the PCCP cathode protection component are avoided, the service life of the device is effectively prolonged, the relative stability of the distance between the PCCP cathode protection component and the sea level is realized, the influence on the protection effect caused by the overhigh or overlow, the stability of the protection process is improved.
Description
Technical Field
The invention relates to the technical field of offshore wind power engineering, in particular to an impressed current protection device for a steel platform of offshore wind power engineering and an implementation method thereof.
Background
Wind power generation is used as a new energy source of a power grid, the development and application of the wind power generation are very popular in the world at present, the offshore wind power generation technology is to utilize offshore wind power resources to be matched with a wind power generator to generate electric energy and transmit the electric energy to an inland power grid, the current supporting technology of an offshore wind turbine mainly comprises two types of bottom fixed support and suspension support, the bottom fixed support can be divided into three modes of a gravity caisson foundation, a single-pile foundation and a multi-pile foundation, the multi-pile foundation is used for absorbing the experience in the offshore oil and gas industry, the wind tower and a wind tower platform are supported by adopting light-weight and low-price steel pipe piles, the steel pipe piles are buried 10-20 meters below a seabed, in order to avoid the corrosion of the steel pipe piles by seawater, current is usually added on the steel pipe piles to realize the rust prevention protection of the steel pipe piles, but the existing steel platform of offshore wind power engineering is mostly provided with a fixed installation, but sea level undulates unevenly, and the wave tide of production is easy to be clapped impressed current protection device down, leads to the protection to break off, seriously influences the life of device, and impressed current protection device's rigidity, but the height of sea level is unstable, leads to the distance between impressed current protection device and the sea level unstable, and impressed current protection device is too high or low excessively apart from the sea level, all can cause the influence to protection process, and the practicality is not good.
Disclosure of Invention
The invention aims to provide an extra-current protection device and method for an offshore wind power engineering steel platform, which are convenient to operate, can realize the relative stability of the distance between a PCCP (prestressed concrete cylinder pipe) cathode protection component and the sea level, avoid the influence on the protection effect caused by overhigh or overlow position of the PCCP cathode protection component and improve the stability of the protection process, and solve the problems that the sea level proposed in the background technology is uneven, the extra-current protection device is easy to beat down by generated waves, the protection is interrupted, the service life of the device is seriously influenced, the position of the extra-current protection device is fixed, but the height of the sea level is unstable, the distance between the extra-current protection device and the sea level is unstable, the extra-current protection device is overhigh or overlow from the sea level, the influence on the protection process can be caused, and the practicability is poor.
In order to achieve the purpose, the invention provides the following technical scheme:
the impressed current protection device for the steel platform of the offshore wind power engineering comprises an upper platform protection mechanism and a lower platform protection mechanism, wherein the upper platform protection mechanism is connected with the lower platform protection mechanism through two potentiostats, and the lower platform protection mechanism adjusts the height of a PCCP (prestressed concrete cylinder pipe) cathode protection component according to the height of the sea level.
Further, the upper platform protection mechanism comprises a foundation ring, a potentiostat, a zero-position cable, a grounding reinforcing steel bar, a concrete bearing platform, a single-chip microcomputer control circuit board, a foundation flange top and a cathode protection control chamber, wherein the potentiostat is fixed on the outer wall of the foundation ring, the potentiostat is provided with two potentiostats, one potentiostat is used and one standby for the two potentiostats, the running potentiostat is connected with the zero-position cable through a lead, the zero-position cable is connected with the outer wall of the grounding reinforcing steel bar, the end part of the grounding reinforcing steel bar is inserted into the concrete bearing platform, the concrete bearing platform is fixedly connected with the bottom of the foundation ring, the middle part of the foundation ring is fixedly sleeved with the foundation flange top, the bottom of the concrete bearing platform is fixedly provided with the single-chip microcomputer control.
Furthermore, the zero-position cable is sleeved inside the copper pipe, and the copper pipe is fixedly connected with the grounding steel bar through a steel plate.
Furthermore, the lower platform protection mechanism comprises steel pipe piles, an ICCP cathodic protection assembly, a position adjusting assembly, liquid level sensors and a PCCP cathodic protection assembly, the tops of the steel pipe piles are inserted into and fixed inside the concrete bearing platform, the steel pipe piles are provided with six steel pipe piles, the six steel pipe piles are arranged in an equal-angle annular mode, two adjacent steel pipe piles are connected through galvanized flat steel, the ICCP cathodic protection assembly is fixedly arranged on one steel pipe pile, a plurality of liquid level sensors are arranged on the outer wall of the other steel pipe pile at equal intervals from top to bottom, each liquid level sensor is in wireless connection with the position adjusting assembly, the position adjusting assembly is fixed on the other steel pipe pile, and the position adjusting assembly is connected with the PCCP cathodic protection assembly.
Furthermore, the ICCP cathodic protection assembly comprises a cathode line sealing box, an epoxy resin sealing layer, a copper connecting sheet and a cathode cable, wherein one end of the cathode cable extends out of the cathode line sealing box, the other end of the cathode cable is fixed in the cathode line sealing box through the copper connecting sheet, the epoxy resin sealing layer is filled in the cathode line sealing box, and the cathode line sealing box is fixed on the steel pipe pile.
Further, the position adjusting assembly comprises a motor, a linkage sensor, a rotating shaft, a ring sleeve, an end sleeve and a protective cable, the linkage sensor is fixed on the motor and electrically connected with the motor, the output end of the motor is fixedly connected with the rotating shaft, the ring sleeve is movably sleeved on the rotating shaft, the ring sleeve is clamped with the end sleeve, a gap is reserved between the end sleeve and the rotating shaft, the protective cable is wound in the gap, and the end part of the protective cable extends out of the end sleeve and is connected with the PCCP cathode protection assembly.
The invention provides another technical scheme, which comprises an implementation method of an external current protection device of an offshore wind power engineering steel platform, and the implementation method comprises the following steps:
s1: the method comprises the following steps that the six steel pipe piles are electrically connected through galvanized flat steels, one galvanized flat steel is connected with a grounding steel bar, and electric power information among the six steel pipe piles is obtained through measuring an exposed copper pipe connected with the grounding steel bar;
s2: setting liquid level warning coordinates of different sections, and respectively installing liquid level sensors on the corresponding liquid level warning coordinates according to the set liquid level warning coordinates, wherein each liquid level sensor is connected with the singlechip control circuit board in a wireless mode;
s3: when the seawater level rises to a liquid level sensor, the liquid level sensor sends coordinate information to a single chip microcomputer control circuit board, the single chip microcomputer control circuit board controls a motor to rotate in the forward direction to drive a rotating shaft to rotate synchronously in the forward direction, so that a protection cable wound on the rotating shaft is tightened, and the protection cable drives a PCCP cathode protection assembly to move upwards synchronously;
s4: when the seawater level descends to another liquid level sensor, the liquid level sensor sends coordinate information to the single chip microcomputer control circuit board, the single chip microcomputer control circuit board controls the motor to rotate reversely to drive the rotating shaft to rotate reversely and synchronously, and the protection cable wound on the rotating shaft is loosened to drive the PCCP cathode protection assembly to move downwards synchronously;
s5: the constant potential rectifier provides stable current for the steel pipe pile, and the rust prevention process of the steel pipe pile is achieved by matching with the PCCP cathodic protection assembly and the ICCP cathodic protection assembly.
Furthermore, the protection cable is a composite cable structure which is formed by an auxiliary anode cable and a reference electrode cable.
Furthermore, singlechip control circuit board and level sensor and motor electric connection.
Further, the cathode cable is introduced into the interior of the cathodic protection control room.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides an impressed current protection device for a steel platform of offshore wind power engineering and an implementation method thereof.
2. The invention provides an impressed current protection device for an offshore wind power engineering steel platform and an implementation method thereof.A single chip microcomputer controls a circuit board to control liquid level sensors and motors with different liquid level warning coordinates, drives a protection cable and a PCCP cathode protection component to move synchronously, avoids the scouring and striking of seawater on the PCCP cathode protection component when tide rises or the sea level fluctuation range is large, avoids the interruption of the protection process caused by sea wave beating or water immersion of the PCCP cathode protection component, effectively prolongs the service life of the device, realizes the relative stability of the distance between the PCCP cathode protection component and the sea level, avoids the influence of overhigh or overlow position of the PCCP cathode protection component on the protection effect, and improves the stability of the protection process.
Drawings
FIG. 1 is a schematic view of the overall structure of the steel platform impressed current protection device for offshore wind power engineering and the implementation method thereof at low sea level;
FIG. 2 is a structural diagram of an upper platform protection mechanism of the steel platform impressed current protection device for offshore wind power engineering and the implementation method thereof provided by the invention;
FIG. 3 is a schematic diagram of a connection position of a zero cable and a grounding steel bar of the extra-current protection device for the steel platform of the offshore wind power engineering and the implementation method thereof provided by the invention;
FIG. 4 is a schematic diagram of arrangement positions of steel pipe piles of the steel platform impressed current protection device for offshore wind power engineering and the implementation method thereof;
FIG. 5 is a schematic diagram of an overall structure of an offshore wind power engineering steel platform impressed current protection device and an implementation method thereof when the sea level is high, according to the present invention;
FIG. 6 is a schematic structural diagram of an ICCP cathodic protection component of the steel platform impressed current protection device for offshore wind power engineering and the implementation method thereof provided by the invention;
FIG. 7 is a schematic diagram of an external structure of a position adjusting assembly of the extra-current protection device for the steel platform of the offshore wind power engineering and the implementation method thereof;
FIG. 8 is a schematic diagram of an internal structure of a position adjusting assembly of the extra-current protection device for the steel platform of the offshore wind power engineering and the implementation method thereof;
FIG. 9 is a schematic diagram of a winding position of a protection cable of the extra-current protection device for the steel platform of the offshore wind power engineering and the implementation method thereof;
fig. 10 is an enlarged schematic view of a part a of components in fig. 5 of the extra-current protection device for the steel platform of the offshore wind power engineering and the implementation method thereof.
In the figure: 1. an upper platform protection mechanism; 11. a foundation ring; 12. a potentiostat; 13. a null cable; 131. a copper pipe; 132. a steel plate; 14. grounding the steel bars; 15. a concrete cap; 16. the singlechip controls the circuit board; 17. a base flange top; 18. a cathodic protection control room; 2. a lower platform protection mechanism; 21. steel pipe piles; 22. an ICCP cathodic protection component; 221. a cathode line sealing box; 222. an epoxy resin sealing layer; 223. a copper connecting sheet; 224. a cathode cable; 23. a position adjustment assembly; 231. a motor; 232. a linkage sensor; 233. a rotating shaft; 234. sleeving a ring; 235. end sleeves; 236. protecting the cable; 24. a liquid level sensor; 25. PCCP cathodic protection components.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows an overall structure of an impressed current protection device for an offshore wind power engineering steel platform, which structurally comprises an upper platform protection mechanism 1 and a lower platform protection mechanism 2, wherein the upper platform protection mechanism 1 is connected with the lower platform protection mechanism 2 through two potentiostats 12, stable current is provided for a steel pipe pile 21 through the potentiostats 12, the upper platform protection mechanism and an ICCP cathodic protection assembly 25 are matched to jointly realize an antirust process of the steel pipe pile 21, the platform collapse caused by the corrosion of the steel pipe pile 21 is avoided, the service life of the platform is prolonged, the lower platform protection mechanism 2 adjusts the height of the PCCP cathodic protection assembly 25 according to the height of a sea level, the relative stability of the distance between the PCCP cathodic protection assembly 25 and the sea level is realized, the influence on a protection effect caused by the overhigh or overlow position of the PCCP cathodic protection assembly 25 is avoided, and the stability of the protection process is improved.
FIG. 2 shows the structure of the upper platform protection mechanism of the steel platform impressed current protection device for offshore wind power engineering, the upper platform protection mechanism 1 comprises a foundation ring 11, a potentiostat 12, a zero-position cable 13, a grounding steel bar 14, a concrete bearing platform 15, a single-chip microcomputer control circuit board 16, a foundation flange top 17 and a cathode protection control chamber 18, the potentiostat 12 is fixed on the outer wall of the foundation ring 11, the potentiostat 12 is provided with two potentiostats 12, one potentiostat 12 is used for one, the operating potentiostat 12 is connected with the zero-position cable 13 through a lead, the zero-position cable 13 is connected with the outer wall of the grounding steel bar 14, the end part of the grounding steel bar 14 is inserted into the concrete bearing platform 15, the concrete bearing platform 15 is fixedly connected with the bottom of the foundation ring 11, the middle part of the foundation ring 11 is fixedly sleeved with the foundation flange top 17, the single-chip microcomputer control circuit board 16 is fixedly, the single chip microcomputer control circuit board 16 is electrically connected with the lower platform protection mechanism 2, and the single chip microcomputer control circuit board 16 is electrically connected with the liquid level sensor 24 and the motor 231.
Fig. 3 shows the structure of the platform protection mechanism on the steel platform impressed current protection device of the offshore wind power engineering, the zero-position cable 13 is sleeved inside the copper pipe 131, the copper pipe 131 is fixedly connected with the grounding steel bar 14 through the steel plate 132, and the electric power information among six steel pipe piles 21 is obtained by measuring the exposed copper pipe 131 connected with the grounding steel bar 14, so that the operation is convenient.
Referring to fig. 4-5, the lower platform protection mechanism 2 includes steel pipe piles 21, ICCP cathodic protection components 22, position adjustment components 23, liquid level sensors 24 and PCCP cathodic protection components 25, the tops of the steel pipe piles 21 are inserted and fixed inside the concrete bearing platform 15, the steel pipe piles 21 are provided with six steel pipe piles 21 which are arranged in an equiangular ring shape, two adjacent steel pipe piles 21 are connected by galvanized flat steel, the six steel pipe piles 21 are electrically connected by galvanized flat steel, one of the galvanized flat steel is connected with the ground steel bar 14 to form a conductor of the ground circuit, because the galvanized flat steel has good corrosion and rust resistance, the ground circuit is effectively prevented from being damaged by corrosion, the ICCP cathodic protection components 22 are fixedly arranged on one steel pipe pile 21, a plurality of liquid level sensors 24 are equidistantly arranged on the outer wall of the other steel pipe pile 21 from top to bottom, and the size of the liquid level sensors 24 is small, the area of contact with sea water is little, be difficult to beat by the wave after fixed, set up different sectional liquid level warning coordinates through singlechip control circuit board 16, and install level sensor 24 respectively on corresponding liquid level warning coordinate according to the liquid level warning coordinate of setting for, every level sensor 24 all connects with singlechip control circuit board 16 through wireless mode, every level sensor 24 all with position control assembly 23 wireless connection, position control assembly 23 is fixed on another steel-pipe pile 21, position control assembly 23 connects with PCCP cathodic protection subassembly 25.
Fig. 6 shows the structure of an ICCP cathodic protection component of an impressed current protection device for a steel platform in offshore wind power engineering, where the ICCP cathodic protection component 22 includes a cathode line sealing box 221, an epoxy resin sealing layer 222, a copper connecting sheet 223 and a cathode cable 224, the cathode cable 224 is introduced into the cathodic protection control chamber 18, one end of the cathode cable 224 extends out of the cathode line sealing box 221, the other end of the cathode cable is fixed inside the cathode line sealing box 221 through the copper connecting sheet 223, the epoxy resin sealing layer 222 is filled inside the cathode line sealing box 221, and the cathode line sealing box 221 is fixed on the steel pipe pile 21.
Referring to fig. 7-9, the position adjusting assembly 23 includes a motor 231, a linkage sensor 232, a rotating shaft 233, a ring sleeve 234, an end sleeve 235 and a protection cable 236, the linkage sensor 232 is fixed on the motor 231 and electrically connected with the motor 231, the motor 231 is fixedly installed inside a steel pipe pile 21, an output end of the motor 231 penetrates through the steel pipe pile 21 and is fixedly connected with the rotating shaft 233, the ring sleeve 234 is movably sleeved on the rotating shaft 233, the ring sleeve 234 is clamped with the end sleeve 235, a gap is left between the end sleeve 235 and the rotating shaft 233, the protection cable 236 is wound in the gap, an end portion of the protection cable 236 extends out of the end sleeve 235 and is connected with the PCCP cathode protection assembly 25, when the sea water level rises to a level sensor 24, the level sensor 24 sends coordinate information to the single chip microcomputer control circuit board 16, the single chip microcomputer control circuit board 16 controls the motor to rotate in a forward direction, and drives the, the protection cable 236 wound on the rotating shaft 233 is tightened, the protection cable 236 drives the PCCP cathode protection assembly 25 to move upwards synchronously, so that the PCCP cathode protection assembly 25 is prevented from being washed and struck by seawater when the tide rises or the sea level fluctuation amplitude is large, the interruption of the protection process caused by sea wave beating or water immersion of the PCCP cathode protection assembly 25 is avoided, and the service life of the device is effectively prolonged; when the sea level descends to another liquid level sensor 24, the liquid level sensor 24 sends coordinate information to the single chip microcomputer control circuit board 16, the single chip microcomputer control circuit board 16 controls the motor 231 to rotate reversely, the rotating shaft 233 is driven to rotate reversely and synchronously, the protection cable 236 wound on the rotating shaft 233 is loosened, the PCCP cathode protection assembly 25 is driven to move downwards synchronously, relative stability of the distance between the PCCP cathode protection assembly 25 and the sea level is achieved through the mode, the influence on the protection effect caused by too high or too low position of the PCCP cathode protection assembly 25 is avoided, and the stability of the protection process is improved.
Referring to fig. 10, the protection cable 236 is a composite cable structure composed of an auxiliary anode cable and a reference electrode cable, so as to enhance expandability and ensure superior bending performance and good lateral pressure resistance.
In order to better show the implementation process of the impressed current protection device for the steel platform, the embodiment provides an implementation method of the impressed current protection device for the steel platform in the offshore wind power engineering, which comprises the following steps:
the method comprises the following steps: the six steel pipe piles 21 are electrically connected by adopting the galvanized flat steel, one galvanized flat steel is connected with the grounding steel bar 14 to form a conductor of a grounding circuit, the galvanized flat steel has good corrosion resistance and rust resistance, so that the fault of the grounding circuit caused by corrosion is effectively avoided, and the electric power information among the six steel pipe piles 21 is obtained by measuring the exposed copper pipe 131 connected with the grounding steel bar 14, so that the operation is convenient;
step two: liquid level warning coordinates of different sections are set through the single chip microcomputer control circuit board 16, the liquid level sensors 24 are respectively installed on the corresponding liquid level warning coordinates according to the set liquid level warning coordinates, and each liquid level sensor 24 is connected with the single chip microcomputer control circuit board 16 in a wireless mode;
step three: when the sea level rises to a liquid level sensor 24, the liquid level sensor 24 sends coordinate information to the single chip microcomputer control circuit board 16, the single chip microcomputer control circuit board 16 controls the motor 231 to rotate in the forward direction to drive the rotating shaft 233 to rotate synchronously in the forward direction, so that the protection cable 236 wound on the rotating shaft 233 is tightened, the protection cable 236 drives the PCCP cathode protection assembly 25 to move upwards synchronously, the washing and striking of sea water on the PCCP cathode protection assembly 25 when the rising tide or the sea level fluctuation amplitude is large are avoided, the interruption of the protection process caused by sea wave beating or water immersion of the PCCP cathode protection assembly 25 is avoided, and the service life of the device is effectively prolonged;
step four: when the sea level descends to another liquid level sensor 24, the liquid level sensor 24 sends coordinate information to the single chip microcomputer control circuit board 16, the single chip microcomputer control circuit board 16 controls the motor 231 to rotate reversely to drive the rotating shaft 233 to rotate reversely and synchronously, the protection cable 236 wound on the rotating shaft 233 is loosened to drive the PCCP cathode protection assembly 25 to move downwards synchronously, and by means of the method, the relative stability of the distance between the PCCP cathode protection assembly 25 and the sea level is realized, the influence on the protection effect caused by the overhigh or overlow position of the PCCP cathode protection assembly 25 is avoided, and the stability of the protection process is improved;
step five: the constant potential rectifier 12 provides stable current for the steel pipe pile 21, and the cooperation of the PCCP cathodic protection component 25 and the ICCP cathodic protection component 22 realizes the rust prevention process of the steel pipe pile 21, so that the platform collapse caused by the corrosion of the steel pipe pile 21 is avoided, and the service life of the platform is prolonged.
The working principle is as follows: the six steel pipe piles 21 are electrically connected by adopting galvanized flat steels, one of the galvanized flat steels is connected with the grounding steel bar 14 to form a conductor of a grounding circuit, electric power information among the six steel pipe piles 21 is obtained by measuring an exposed copper pipe 131 connected with the grounding steel bar 14, liquid level warning coordinates of different sections are set through the singlechip control circuit board 16, the liquid level sensors 24 are respectively installed on the corresponding liquid level warning coordinates according to the set liquid level warning coordinates, each liquid level sensor 24 is connected with the singlechip control circuit board 16 in a wireless mode, when the seawater level rises to the position of one liquid level sensor 24, the liquid level sensors 24 send the coordinate information to the singlechip control circuit board 16, the singlechip control circuit board 16 controls the motor 231 to rotate in the forward direction to drive the rotating shaft 233 to rotate in the forward direction synchronously, so that the protective cable 236 wound on the rotating shaft 233 is tightened, the protection cable 236 drives the PCCP cathodic protection component 25 to move up synchronously, when the seawater level descends to another liquid level sensor 24, the liquid level sensor 24 sends coordinate information to the single chip microcomputer control circuit board 16, the single chip microcomputer control circuit board 16 controls the motor 231 to rotate reversely, the rotating shaft 233 is driven to rotate reversely and synchronously, the protection cable 236 wound on the rotating shaft 233 is loosened, the PCCP cathodic protection component 25 is driven to move down synchronously, stable current is provided for the steel pipe pile 21 through the potentiostat 12, and the rust prevention process of the steel pipe pile 21 is realized by matching the PCCP cathodic protection component 25 and the ICCP cathodic protection component 22 together.
In summary, the following steps: the offshore wind power engineering steel platform impressed current protection device and the implementation method thereof adopt galvanized flat steel to electrically connect six steel pipe piles 21, wherein one galvanized flat steel is connected with a grounding steel bar 14 to form a conductor of a grounding circuit, the galvanized flat steel has good corrosion resistance and rust resistance, the fault caused by corrosion of the grounding circuit is effectively avoided, electric power information among the six steel pipe piles 21 is obtained by measuring an exposed copper pipe 131 connected with the grounding steel bar 14, the operation is convenient, liquid level warning coordinates of different sections are set through a singlechip control circuit board 16, liquid level sensors 24 are respectively installed on corresponding liquid level warning coordinates according to the set liquid level warning coordinates, each liquid level sensor 24 is connected with the singlechip control circuit board 16 in a wireless mode, when the sea water level rises to the liquid level sensor 24, the liquid level sensor 24 sends the coordinate information to the singlechip control circuit board 16, the singlechip control circuit board 16 controls the motor 231 to rotate forward to drive the rotating shaft 233 to rotate forward and synchronously, so that the protection cable 236 wound on the rotating shaft 233 is tightened, the protection cable 236 drives the PCCP cathode protection assembly 25 to move up synchronously, and avoids the washing and striking of seawater on the PCCP cathode protection assembly 25 when the tide rises or the sea level fluctuation amplitude is large, the interruption of the protection process caused by sea wave beating or the immersion of the PCCP cathode protection assembly 25 is avoided, the service life of the device is effectively prolonged, when the sea level descends to another liquid level sensor 24, the liquid level sensor 24 sends coordinate information to the singlechip control circuit board 16, the singlechip control circuit board 16 controls the motor 231 to rotate reversely to drive the rotating shaft 233 to rotate reversely and synchronously, the protection cable 236 wound on the rotating shaft 233 is loosened to drive the PCCP cathode protection assembly 25 to move downwards synchronously, and the relative stability of the distance between the PCCP cathode protection assembly 25 and the sea level is realized by the mode, the influence on the protection effect caused by too high or too low position of the PCCP cathodic protection component 25 is avoided, the stability of the protection process is improved, stable current is provided for the steel pipe pile 21 through the constant potential rectifier 12, the rust prevention process of the steel pipe pile 21 is realized together by matching the PCCP cathodic protection component 25 and the ICCP cathodic protection component 22, the platform collapse caused by corrosion of the steel pipe pile 21 is avoided, and the service life of the platform is prolonged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The impressed current protection device for the steel platform of the offshore wind power engineering is characterized by comprising an upper platform protection mechanism (1) and a lower platform protection mechanism (2), wherein the upper platform protection mechanism (1) is connected with the lower platform protection mechanism (2) through two potentiostats (12), and the lower platform protection mechanism (2) adjusts the height of a PCCP (prestressed concrete cylinder pipe) cathode protection assembly (22) according to the height of the sea level.
2. The extra-current protection device for the steel platform of the offshore wind power engineering according to claim 1, wherein the upper platform protection mechanism (1) comprises a base ring (11), a potentiostat (12), a zero-position cable (13), a grounding steel bar (14), a concrete bearing platform (15), a single chip microcomputer control circuit board (16), a base flange top (17) and a cathode protection control chamber (18), the potentiostat (12) is fixed on the outer wall of the base ring (11), the potentiostat (12) is provided with two potentiostats, one potentiostat (12) is used and one spare, the running potentiostat (12) is connected with the zero-position cable (13) through a lead, the zero-position cable (13) is connected with the outer wall of the grounding steel bar (14), the end of the grounding steel bar (14) is inserted into the concrete bearing platform (15), and the concrete bearing platform (15) is fixedly connected with the bottom of the base ring (11), the middle part of the foundation ring (11) is fixedly sleeved with a foundation flange top (17), the bottom of the concrete bearing platform (15) is fixedly provided with a single chip microcomputer control circuit board (16), and the single chip microcomputer control circuit board (16) is electrically connected with the lower platform protection mechanism (2).
3. The extra-current protection device for the steel platform of the offshore wind power engineering according to claim 2, wherein the zero cable (13) is sleeved inside the copper pipe (131), and the copper pipe (131) is fixedly connected with the grounding steel bar (14) through a steel plate (132).
4. The extra-current protection device for the steel platform of the offshore wind power engineering according to claim 1, wherein the lower platform protection mechanism (2) comprises steel pipe piles (21), ICCP cathodic protection components (22), a position adjusting component (23), liquid level sensors (24) and a PCCP cathodic protection component (25), the tops of the steel pipe piles (21) are inserted into and fixed in the concrete bearing platform (15), six steel pipe piles (21) are arranged in an equiangular annular manner, two adjacent steel pipe piles (21) are connected by galvanized flat steel, one steel pipe pile (21) is fixedly provided with the ICCP cathodic protection component (22), the outer wall of the other steel pipe pile (21) is provided with a plurality of liquid level sensors (24) at equal intervals from top to bottom, and each liquid level sensor (24) is wirelessly connected with the position adjusting component (23), the position adjusting component (23) is fixed on the other steel pipe pile (21), and the position adjusting component (23) is connected with the PCCP cathode protection component (25).
5. The extra-current protection device for the steel platform of the offshore wind power engineering according to claim 4, wherein the ICCP cathode protection assembly (22) comprises a cathode line sealing box (221), an epoxy resin sealing layer (222), a copper connecting sheet (223) and a cathode cable (224), one end of the cathode cable (224) extends out of the cathode line sealing box (221), the other end of the cathode cable is fixed in the cathode line sealing box (221) through the copper connecting sheet (223), the epoxy resin sealing layer (222) is filled in the cathode line sealing box (221), and the cathode line sealing box (221) is fixed on the steel pipe pile (21).
6. The extra-current protection device for the steel platform of the offshore wind power engineering according to claim 4, wherein the position adjusting component (23) comprises a motor (231), a linkage sensor (232), a rotating shaft (233), a ring sleeve (234), an end sleeve (235) and a protection cable (236), the linkage sensor (232) is fixed on the motor (231) and electrically connected with the motor (231), the output end of the motor (231) is fixedly connected with the rotating shaft (233), the ring sleeve (234) is movably sleeved on the rotating shaft (233), the ring sleeve (234) is clamped with the end sleeve (235), a gap is reserved between the end sleeve (235) and the rotating shaft (233), the protection cable (236) is wound in the gap, and the end part of the protection cable (236) extends out of the end sleeve (235) and is connected with the PCCP cathode protection component (25).
7. An implementation method of the impressed current protection device of the steel platform of the offshore wind power engineering according to any one of claims 1 to 6, characterized by comprising the following steps:
s1: the method comprises the following steps of electrically connecting six steel pipe piles (21) by adopting galvanized flat steels, wherein one galvanized flat steel is connected with a grounding steel bar (14), and measuring an exposed copper pipe (131) connected with the grounding steel bar (14) to obtain electric power information among the six steel pipe piles (21);
s2: setting liquid level warning coordinates of different sections, respectively installing the liquid level sensors (24) on the corresponding liquid level warning coordinates according to the set liquid level warning coordinates, and connecting each liquid level sensor (24) with the single chip microcomputer control circuit board (16) in a wireless mode;
s3: when the sea water level rises to a liquid level sensor (24), the liquid level sensor (24) sends coordinate information to a single chip microcomputer control circuit board (16), the single chip microcomputer control circuit board (16) controls a motor (231) to rotate in the forward direction, a rotating shaft (233) is driven to rotate in the forward direction synchronously, a protection cable (236) wound on the rotating shaft (233) is tightened, and the protection cable (236) drives a PCCP cathode protection assembly (25) to move upwards synchronously;
s4: when the seawater level descends to another liquid level sensor (24), the liquid level sensor (24) sends coordinate information to the single chip microcomputer control circuit board (16), the single chip microcomputer control circuit board (16) controls the motor (231) to rotate reversely to drive the rotating shaft (233) to rotate reversely and synchronously, the protection cable (236) wound on the rotating shaft (233) is loosened to drive the PCCP cathode protection assembly (25) to move downwards synchronously;
s5: the constant potential rectifier (12) provides stable current for the steel pipe pile (21), and the rust prevention process of the steel pipe pile (21) is achieved through cooperation of the PCCP cathodic protection assembly (25) and the ICCP cathodic protection assembly (22).
8. An implementation method of the impressed current protection device on the steel platform of the offshore wind power engineering according to claim 7, characterized in that the protection cable (236) is a composite cable structure composed of an auxiliary anode cable and a reference electrode cable.
9. The implementation method of the impressed current protection device of the steel platform of the offshore wind power engineering according to claim 7, characterized in that the singlechip control circuit board (16) is electrically connected with the liquid level sensor (24) and the motor (231).
10. Method for implementing an impressed current protection device on an offshore wind power engineering steel platform according to claim 7, characterized in that the cathodic cable (224) is introduced inside a cathodic protection control room (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353169.0A CN111394732A (en) | 2020-04-29 | 2020-04-29 | Impressed current protection device for steel platform of offshore wind power engineering and implementation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010353169.0A CN111394732A (en) | 2020-04-29 | 2020-04-29 | Impressed current protection device for steel platform of offshore wind power engineering and implementation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378967A (en) * | 2020-11-24 | 2021-02-19 | 青岛双瑞海洋环境工程股份有限公司 | Guide rail type underwater steel pipe pile electrode probe and mounting device |
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2020
- 2020-04-29 CN CN202010353169.0A patent/CN111394732A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378967A (en) * | 2020-11-24 | 2021-02-19 | 青岛双瑞海洋环境工程股份有限公司 | Guide rail type underwater steel pipe pile electrode probe and mounting device |
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Application publication date: 20200710 |