CN110208178A - System and method for inhibiting and monitoring seawater pipe electrochemical corrosion - Google Patents
System and method for inhibiting and monitoring seawater pipe electrochemical corrosion Download PDFInfo
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- CN110208178A CN110208178A CN201910606266.3A CN201910606266A CN110208178A CN 110208178 A CN110208178 A CN 110208178A CN 201910606266 A CN201910606266 A CN 201910606266A CN 110208178 A CN110208178 A CN 110208178A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Abstract
The present invention provides a kind of for inhibiting and monitoring the system of seawater pipe electrochemical corrosion comprising: dissimilar metal galvanic couple insulation system, the galvanic couple current potential being arranged in pairs survey piece, galvanic couple monitoring device, passive electrode structure, passive electrode detection device, active electrode structure and active electrode detection device.Wherein, dissimilar metal galvanic couple insulation system is connected in seawater pipe, dissimilar metal galvanic couple structure includes: the first hardware in seawater pipe, the second hardware in seawater pipe, and the first insulator between the first hardware and the second hardware, first hardware and the second hardware are made of different metals respectively, and galvanic couple current potential surveys the both ends that piece is connected to dissimilar metal galvanic couple insulation system, galvanic couple monitoring device surveys the potential difference that piece measures according to galvanic couple current potential, judge the state of insulation of dissimilar metal galvanic couple insulation system.
Description
Technical field
The present invention relates to a kind of system and method for seawaterline, more particularly to one kind is for inhibiting and monitoring seawater
The system and method for pipeline electrochemical corrosion.
Background technique
The electrochemical corrosion of naval vessel seawater pipe generally betides dissimilar metal connection or binding site.From seawater
For piping total system, such as steel hull and copper kingston valve, corronil pipeline and stainless steel between each pipeline equipment
Filter, corronil pipeline and various valves, corronil pipeline and the two-way stainless steel pipeline of sea water pump, HDR and various valves
Between, it is fixedly connected by ring flange with bolt, galvanic couple structure is constituted under the effect of the electrolyte such as seawater, in the feelings being directly connected to
Galvanic Current is formed under condition, generates electrochemical corrosion.And for part, such as valve body of various valves and internal valve plate, valve rod,
Spring member is made of different alloy materials, is combined together with the fastening of the seawaterline of corronil or stainless steel, because multiple
Miscellaneous dissimilar metal galvanic couple relationship and generate electrochemical corrosion.Further for microcosmic, corronil seawaterline is because of installation
Process requirement and ring flange weld, or form elbow pipeline section, the work that the different metal materials of commissure are formed with piecewise welding
Skill defect easily becomes electrochemical corrosion position.
Based on this, in order to protect seawater pipe, it is expected that starting with from system design, obtain a kind of for inhibiting
With the system of monitoring seawater pipe electrochemical corrosion, the generation of electrochemical corrosion can be prevented, and by entire
The monitoring and control of potential difference between the different metal materials of seawater pipe reaches monitoring seawater pipe electrochemical corrosion
Purpose.
Summary of the invention
An object of the present invention be to provide it is a kind of for inhibiting and monitoring the system of seawater pipe electrochemical corrosion,
The system completely cuts off Galvanic Current using the dissimilar metal galvanic couple insulation system being connected in seawater pipe, and in metal material
Active electrode structure is set between material component, to change the localized micro structure in seawater pipe such as valve member, pump, weld seam
Metal potential difference, to prevent the generation of electrochemical corrosion, and by passive electrode structure to the galvanic couple of seawater pipe
The potential difference of insulation system and each partial component carries out the monitoring and control of continuous and effective, i.e., by entire seawaterline system
The monitoring and control of potential difference between the different metal materials of system, to reach monitoring seawater pipe electrochemical corrosion.
In order to achieve the purpose that foregoing invention, the present invention provides one kind for inhibiting and monitoring seawater pipe electrification
The system for learning corrosion comprising:
Dissimilar metal galvanic couple insulation system, is connected in seawater pipe, and dissimilar metal galvanic couple structure includes: to be located at
The first hardware in seawater pipe, the second hardware in seawater pipe, and it is set to the first gold medal
Belong to the first insulator between element and the second hardware, first hardware and the second hardware are respectively by difference
Metal be made；
The galvanic couple current potential being arranged in pairs surveys piece, is connected to the both ends of dissimilar metal galvanic couple insulation system；
Galvanic couple monitoring device is surveyed piece with galvanic couple current potential and is connect, to survey the potential difference that piece measures, judgement according to galvanic couple current potential
The state of insulation of dissimilar metal galvanic couple insulation system；
Passive electrode structure, it is insulated to be connected between the metal equipment of seawater pipe, it is mentioned in passive mode
For being able to suppress the first protective current of electrochemical corrosion；Passive electrode structure includes: first anode part, is connected to as yin
Between the metal equipment of pole；Second insulator is set between first anode part and metal equipment；
Passive electrode monitoring device is connect with passive electrode structure, to monitor the state of passive electrode structure；
Active electrode structure, insulated to be connected between the metal equipment of seawater pipe, active electrode structure packet
Include: second plate part is connected between the metal equipment as cathode；Third insulator is set to second plate part and institute
It states between metal equipment；
Active electrode monitoring device is connect with the active electrode structure, the active electrode monitoring device include: by
Current source is controlled, the active electrode structure output is made to be able to suppress the second protective current of electrochemical corrosion.
In technical solutions according to the invention, the system is by providing a kind of electric intervention side to seawater pipe
Formula is inhibited and is monitored to the electrochemical corrosion in seawater pipe, by seawater pipe to dissimilar metal
Galvanic couple binding site installation dissimilar metal galvanic couple insulation system and continue carry out potential monitoring, seawaterline, pump, valve member etc. by
The binding site of multiple dissimilar metal component compositions installs electrode, is provided in passive or active mode and is able to suppress electrochemistry corruption
The protective current of erosion, to continue to monitor and regulate and control the potential difference of binding site, to effectively inhibit seawater pipe equipment
Dissimilar metal between electrochemical corrosion.
In addition, may be implemented to continue to monitor by the system and data summarization, to control seawaterline system comprehensively
State of insulation and potential difference data between system different metal materials, and then the electrochemical corrosion of seawater pipe is controlled comprehensively
State.
Further, in the systems described in the present invention, passive electrode structure is provided in passive mode and is able to suppress electricity
First protective current of chemical attack is by selecting the material of first anode part to realize.
Further, in the systems described in the present invention, the material of first anode part is selected as: compared to seawaterline
The metal equipment of system, first anode part is in Seawater in current potential negative enough.
Further, in the systems described in the present invention, first anode part is ferrous alloy anode member.
Further, in the systems described in the present invention, the material of second plate part is selected as: compared to seawaterline
The metal equipment of system, chemical characteristic of the second plate part in Seawater is more stable and can bear bigger current density.
Further, in the systems described in the present invention, second plate part is silver-base alloy anode member.
Further, in the systems described in the present invention, passive electrode monitoring device includes:
First processor module；
First current monitoring module is connect by the first normally closed relay with passive electrode structure, and with first at
The connection of device module is managed, is protected with detecting provide under passive electrode structure original state first under the control of first processor module
Protect electric current Ipe0And real-time detection surveys the first protective current Ipet；The actual measurement protective current IpetWith under original state
One protective current Ipe0It compares, to judge the state of passive electrode structure.
Further, in the systems described in the present invention, further includes:
Upper industrial personal computer is connect with first processor module；
Database is connect with upper industrial personal computer；
Wherein, upper industrial personal computer is based on the first protective current I under original statepe0Obtain criticality alarm electric current Ipebj, and
By the first protective current I under original statepe0With criticality alarm electric current IpebjIt is stored in the database；The upper industry control
Machine is by the first protective current I of the actual measurementpetWith the current data I of databases storagepe0、IpebjIt compares, to judge passive electrical
The state of pole structure normally whether.
Further, in the systems described in the present invention, passive electrode monitoring device further include:
First voltage monitoring modular is connect by the second normally opened relay with passive electrode structure, and with first at
The connection of device module is managed, the first relay, the second relay of connection are disconnected to pass through under the control of first processor module, with inspection
The voltage of passive electrode structure is surveyed, the first voltage monitoring modular is connect with the upper industrial personal computer.
Further, in the systems described in the present invention, passive electrode monitoring device further include:
Auxiliary current source is connect by normally opened third relay with passive electrode structure, and with first processor mould
Block connection disconnects the first relay, connection third relay to pass through under the control of first processor module, so that passive
Electrode provides auxiliary protection electric current Ipefz。
Further, in the systems described in the present invention, active electrode monitoring device includes:
Second processor module；
Controlled current source is connect with passive electrode structure, and is connect with second processor module, in second processor
Second protective current is provided under the control of module；
Second current monitoring module, connect with active electrode structure, and connect with second processor module, to examine in real time
Survey the second protective current；
Second voltage monitoring modular, connect with active electrode structure, and connect with second processor module, to examine in real time
Survey the anode voltage of active electrode structure.
Further, in the systems described in the present invention, second processor module is based on the second current detection module and the
The data of two voltage detection modules transmission, control the output of controlled current source, so that error delta=│ (Vaet-Vaes)/Vaes│≤
Δs；Wherein VaesFor the protection voltage of setting, VaetFor the anode voltage of the active electrode structure of real-time detection, ΔsFor setting
Error amount.
Further, in the systems described in the present invention, galvanic couple monitoring device includes:
Channel switching module is surveyed piece with galvanic couple current potential and is connect；
Tertiary voltage monitoring modular is connect with the channel switching module；
Third processor module is connect with the tertiary voltage monitoring modular, and is connect with the upper industrial personal computer；
Original state processing module is connect with the third processor module and tertiary voltage monitoring modular；
Wherein, under the control of third processor module: tertiary voltage monitoring modular measures galvanic couple current potential and surveys piece both ends
Initial potential difference V0And the actual measurement potential difference V measured in real timet；The original state processing module is based on initial potential difference V0?
To the alarm potential difference V of dissimilar metal galvanic couple insulation systembjWith the failure potential difference V of dissimilar metal galvanic couple insulation systemsx；
The V that upper industrial personal computer transmits third processor module0、Vbj、VsxIt is stored in database, and according to the actual measurement
Potential difference VtWith the voltage data V of databases storage0、Vbj、VsxComparison, judge the insulation of dissimilar metal galvanic couple insulation system
State normally whether.
Correspondingly, it is rotten for inhibiting and monitoring seawater pipe electrochemistry that another object of the present invention is to provide one kind
The method of erosion, this method can change the metal current potential of such as valve member, pump, the weld seam of the localized micro structure in seawater pipe
Difference, to prevent the generation of electrochemical corrosion, and this method can achieve monitoring seawater pipe electrochemical corrosion.
In order to achieve the purpose that foregoing invention, the invention also provides one kind for inhibiting and monitoring seawater pipe electricity
The method of chemical attack uses above-mentioned system to implement.
System and method of the present invention for inhibiting and monitoring seawater pipe electrochemical corrosion have as follows
The advantage and the utility model has the advantages that
The system is by providing a kind of electric intervening mode to the electrification in seawater pipe to seawater pipe
It learns corrosion to be inhibited and monitored, by installing dissimilar metal to dissimilar metal galvanic couple binding site in seawater pipe
Galvanic couple insulation system simultaneously continues the knot for carrying out potential monitoring, being made of in seawaterline, pump, valve member etc. multiple dissimilar metal components
It closes position and electrode is installed, provide the protective current for being able to suppress electrochemical corrosion, in passive or active mode to continue to monitor
And regulate and control the potential difference of binding site, so that the electrochemistry effectively between the dissimilar metal of inhibition seawater pipe equipment is rotten
Erosion.
In addition, may be implemented to continue to monitor by the system and data summarization, to control seawaterline system comprehensively
State of insulation and potential difference data between system different metal materials, and then the electrochemical corrosion of seawater pipe is controlled comprehensively
State.
In addition, method of the present invention similarly has above advantages and beneficial effect.
Detailed description of the invention
Fig. 1 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The structural schematic diagram of dissimilar metal galvanic couple insulation system in mode.
Fig. 2 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The structural schematic diagram of passive electrode structure in mode.
Show to Fig. 3 partial enlargement the structure in Fig. 2 at A.
Show to Fig. 4 partial enlargement the structure in Fig. 2 at B.
Fig. 5 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The equivalent schematic diagram of passive electrode structure in mode.
Fig. 6 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The structural schematic diagram of active electrode structure in mode.
Show to Fig. 7 partial enlargement the structure in Fig. 6 at C.
Show to Fig. 8 partial enlargement the structure in Fig. 6 at D.
Fig. 9 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The equivalent schematic diagram of active electrode structure in mode.
Figure 10 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the functional block diagram of galvanic couple monitoring device in mode.
Figure 11 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the functional block diagram of passive electrode monitoring device in mode.
Figure 12 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the functional block diagram of active electrode monitoring device in mode.
Figure 13 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the system block diagram in mode.
Specific embodiment
It is used to inhibiting and monitoring seawater pipe to of the present invention below in conjunction with Figure of description and specific embodiment
The system and method for road system electrochemical corrosion are further described in detail, but the explanation is not constituted for the present invention
The improper restriction of technical solution.
Fig. 1 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The structural schematic diagram of dissimilar metal galvanic couple insulation system in mode.
As shown in Figure 1, dissimilar metal galvanic couple insulation system 1 includes the first hardware in seawater pipe
11, the second hardware 12 in seawater pipe and set on the of the first hardware and the second hardware 12
One insulator 13, wherein the first hardware 11 and the second hardware 12 can be made of different metals.
Dissimilar metal galvanic couple insulation system 1 is mounted with insulation spacer and the bolt by being mounted with insulating sleeve and gasket
It is fastenedly connected in seawater pipe,
And it can be seen that with further reference to Fig. 1 and monitoring galvanic couple electricity be installed at the both ends of dissimilar metal galvanic couple insulation system 1
The galvanic couple current potential of position being arranged in pairs surveys piece 2, and 2 extraction wire of piece of galvanic couple current potential surveying accesses galvanic couple monitoring device G-PCE, galvanic couple prison
After device G-PECE is surveyed by connecting with galvanic couple current potential survey piece 2, the potential difference that piece 2 measures is surveyed according to galvanic couple current potential, judges xenogenesis
The state of insulation of metal galvanic couple insulation system 1 is monitored with the state of insulation to dissimilar metal insulation galvanic couple structure 1.
Fig. 2 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The structural schematic diagram of passive electrode structure in mode.
It is connected between the metal equipment of seawater pipe as shown in Fig. 2, passive electrode structure 3 is insulated, with passive
Mode the first protective current for being able to suppress electrochemical corrosion is provided.And it can be seen that the packet of passive electrode structure 3 with reference to Fig. 2
Include: first anode part 31 is connected between the metal equipment 32 as cathode；Second insulator 33 is set to the first anode
Between part 31 and metal equipment 32；
It should be noted that in the present embodiment, metal equipment 32 is made of Cu alloy material, and therefore, Ke Yixuan
Chemical characteristic is more active than Cu alloy material under briny environment, polarities of potentials metal material more more negative than Cu alloy material is made
For anode.Preferably, first anode part is ferrous alloy anode member.
Passive electrode structure 3 is fastenedly connected by fastener 34.About fastener 34 structure can with reference to Fig. 3 and
Fig. 4.Show to Fig. 3 partial enlargement the structure in Fig. 2 at A.Show to Fig. 4 partial enlargement the structure in Fig. 2 at B.
As shown in Figure 3 and Figure 4, fastener 34 includes insulating sleeve 341, lug plate 342, insulation spacer 343 and fastening
Nut 344.Wherein, it is fastenedly connected, is made by insulation spacer 323 and insulating sleeve 341 between the component of metal equipment
Passive electrode structure 3 and metal equipment insulate, and passive electrode structure 3 by insulating sleeve 341 and insulation spacer 343 it
Between bolt connect and be adaptedly provided with fastening nut 344 and be fastenedly connected.
The conducting wire access passive electrode monitoring installed on the pipeline component of passive electrode structure 3 and the metal equipment 32 of two sides
Device PE-PCE.
Fig. 5 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The equivalent schematic diagram of passive electrode structure in mode.
As shown in figure 5, in the dotted line frame anticipated as shown in the figure, e1、e2Indicate the ferrous alloy anode as first anode part 31
The equivalent primary battery electromotive force of part and the Cu alloy material of metal equipment 32 in the seawater, r1、r2Then it is expressed as the interior of primary battery
Resistance, u1、u2It can detecte after expression ferrous alloy anode member and Cu alloy material mutual insulating composition passive electrode structure 3
Open-circuit voltage.The conducting wire access passive electrode monitoring device PE-PCE installed on electrode and two sides pipeline component, passes through passive electrical
First relay normally closed contact k in the monitoring device PE-PCE of pole1a/k2aConnection, generate electrochemical protection electric current i1/i2, with right
Cu alloy material provides protection, prevents or slows down the corrosion of copper alloy component in the seawater.Passive electrode monitoring device PE-PCE
By current detecting part A to i1/i2It is continued to monitor, in control k1/k2aAfter disconnection, pass through V pairs of voltage check part
u1/u2It is detected, by i1/i2And u1/u2Measured value it is normal whether, be so as to monitor the work of passive electrode structure 3
It is no normal.When detecting electrochemical protection electric current i1/i2Lower than setting value, and disconnect k1a/k2aAfter, detect u1/u2Also it shows
It writes and is lower than setting value, can determine whether that ferrous alloy anode member closes on ageing failure.Due to can not being interrupted for naval vessel seawaterline work
Property, and ferrous alloy electrode must be replaced according to the repair cycle, therefore passive electrode monitoring device PE-PCE provides auxiliary
Current source is1/is2, when ferrous alloy electrode closes on ageing failure, disconnect k1a/k2aAccess k1b/k2b, by adjusting auxiliary electricity
Stream source is1、is2Output so that protective current i1、i2Setting value is reached or approached, seawaterline component is made to obtain continuing guarantor
Shield.
That is, passive electrode structure 3 provides the first protection electricity for being able to suppress electrochemical corrosion in passive mode
Stream is by selecting the material of first anode part to realize.
Fig. 6 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The structural schematic diagram of active electrode structure in mode.
It is connected between the metal equipment of seawater pipe as shown in fig. 6, active electrode structure 4 is insulated, active electricity
Pole structure 4 includes: second plate part 41, is connected between the metal equipment 42 as cathode；Third insulator 42, is set to
Between second plate part 41 and metal equipment 42.
It should be pointed out that the two-way stainless steel of metal material HDR used by metal equipment 42, thus second plate part 41
Using silver-base alloy anode member.
Active electrode structure 4 is fastenedly connected by fastener 34.About fastener 34 structure can with reference to Fig. 7 and
Fig. 8.Show to Fig. 7 partial enlargement the structure in Fig. 6 at C.Show to Fig. 8 partial enlargement the structure in Fig. 6 at D.
As shown in Figure 7 and Figure 8, fastener 34 includes insulating sleeve 341, lug plate 342, insulation spacer 343 and fastening
Nut 344.Wherein, it is fastenedly connected, is made by insulation spacer 323 and insulating sleeve 341 between the component of metal equipment
Active electrode structure 4 and metal equipment insulate, and active electrode structure 4 by insulating sleeve 341 and insulation spacer 343 it
Between bolt connect and be adaptedly provided with fastening nut 344 and be fastenedly connected.
The conducting wire access active electrode monitoring installed on the pipeline component of the metal equipment 42 of active electrode structure 4 and two sides
Device AE-PCE.
Fig. 9 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of implementation
The equivalent schematic diagram of active electrode structure in mode.
As shown in figure 9, in the dotted line frame anticipated as shown in the figure, ea1/ea2Indicate the silver-base alloy sun as second plate part 41
The equivalent primary battery electromotive force of the two-way stainless steel alloy of material HDR in the seawater used by pole part and metal equipment 42, ra1/
ra2Indicate the internal resistance of primary battery, ua1、ua2Indicate silver-base alloy anode member and the two-way stainless steel material mutual insulating composition electricity of HDR
The open-circuit voltage that can detecte after the structure of pole.The conducting wire access active electrode monitoring installed on electrode and two sides pipeline component fills
AE-PCE is set, the controllable current source is in active electrode monitoring device AE-PCE is passed througha1/isa2Output protection electric current ia1/ia2.Root
According to the specific composition material and size of protected seawaterline equipment, regulates and controls current value and reach required protection potential, in sun
Under electrode current effect, it is able to suppress in the protection potential of electrochemical corrosion so that the positions such as weld seam of seawaterline are in.
Figure 10 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the functional block diagram of galvanic couple monitoring device in mode.
As shown in Figure 10, and if necessary Fig. 1 is combined, in the galvanic couple that the both ends of dissimilar metal galvanic couple insulation system 1 are installed
Current potential surveys the channel switching module CSB in 2 extraction wire of piece access galvanic couple monitoring device G-PCE, controls in microprocessor module MCU
It under system, surveys piece signal and is switched on to voltage monitoring module GVDM and original state processing module ISPE, in dissimilar metal electricity
Even insulation system 1 measures galvanic couple current potential and surveys 2 both ends initial potential difference V of piece at the beginning of installing0, and obtained according to original state calculation processing
To the alarm potential difference V of dissimilar metal galvanic couple insulation system criticality alarmbjWith the failure current potential of dissimilar metal galvanic couple insulation system
Poor Vsx, processing and control element (PCE) G-PCE is communicatively by V0、Vbj、VsxData are uploaded in upper industrial personal computer EIPC and database
DBMS。
When monitoring, V that upper industrial personal computer EIPC surveys galvanic couple monitoring device G-PCEtValue is with database D BMS's
Data are compared, that is, whether can determine whether the state of insulation of dissimilar metal galvanic couple insulation system 1 normally.
It should be noted that alarm potential difference VbjWith failure potential difference VsxCalculating can be obtained by the prior art.Example
Such as: publication number CN106940417A, publication date are on July 11st, 2017, and entitled " one kind obtains insulation etc. based on voltage measurement
It is poor based on initial potential to disclose how in the Chinese patent literature of the monitoring device and method of state of insulation between the galvanic couple of value line "
V0Obtain alarm potential difference VbjWith failure potential difference Vsx。
Figure 11 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the functional block diagram of passive electrode monitoring device in mode.
As shown in figure 11, passive electrode structure 3 and two lateral line metals install connection cables, access passive electrode monitoring dress
Set PE-PCE.Passive electrode structure 3 and two sides metal parts are respectively mounted connection cables, are said with the working condition of wherein side
It is bright.It is cathode that valve member, which is Cu alloy material, in figure, and first anode part is ferrous alloy material, relay normally closed touching when normal work
Point K1aClosure, the protective current generated in Seawater are detected by current detection module ECDM.In the initial state, guarantor is measured
Shield electric current is Ipe01, it will be uploaded to upper industrial personal computer EIPC after data processing, criticality alarm electric current I is calculated by EIPCpebj1,
The I of each passive electrodepe0And IpebjData storage is in database D BMS.In daily monitoring, upper industrial personal computer EIPC is by nothing
The I that the microprocessor module MCU of source electrode monitoring device PE-PCE is surveyedpetValue and the data of database D BMS are compared
It is right, that is, can determine whether electrode it is working properly whether.If measured current Ipet1Lower than alarming value, upper industrial personal computer EIPC can pass through
Microprocessor module MCU is controlled, and normally-closed contact K is disconnected1a, connect normally opened contact K1b, access voltage detection module EVDM survey
Anode voltage is measured, if anode aging voltage is low, system alarm prompt repairs replacement to electrode.But if seawaterline
Equipment does not arrive the maintenance replacement cycle of plan, can keep K at this time1aIt disconnects, connects K1c, auxiliary current source ACS1 is accessed, in Wei Chu
Make protective current I under reason device module MCU controlpet1Reach or approach initial value Ipe01, pipeline is made to obtain sustainable protection.
It should be pointed out that in the present embodiment, passive electrode monitoring device further includes auxiliary current source, by normal
The relay opened is connect with passive electrode structure 3, and is connect with microprocessor module MCU, in the control of microprocessor module MCU
System is lower by disconnecting normally closed relay, connecting normally opened relay (i.e. disconnection normally-closed contact K1a, connect normally opened contact K1b),
So that passive electrode provides auxiliary protection electric current Ipefz。
Figure 12 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the functional block diagram of active electrode monitoring device in mode.
As shown in figure 12, active electrode structure 4 and two lateral line metals install connection cables, access active electrode monitoring dress
Set AE-PCE.Active electrode structure and two sides metal parts are respectively mounted connection cables, are said with the working condition of wherein side
It is bright.Pipeline in figure is that the two-way stainless steel material of HDR is cathode, and second plate part is Pd-Ag substrate alloy material.Active electrode and quilt
After material property and size calculating determination of the protection potential set between protection pipeline equipment according to each section of seawaterline equipment
It is stored in host computer EIPC and database DBMS.If setting protection potential as Vaes, protection when normal work in Seawater
Electric current IaesIt is exported by controlled current source CCS, voltage detection module EVDM real-time detection anode voltage Vaet, current detection module
ECDM real-time detection protective current Iaet, under the control of the microprocessor module MCU of active electrode monitoring device AE-PCE, adjust
Whole controlled current source CCS output, so that error delta=│ (Vaet-Vaes)/Vaes│≤Δs(in the present embodiment, ΔsCan be
0.1)；Wherein VaesFor the protection voltage of setting, VaetFor the anode voltage of the active electrode structure of real-time detection.In anode current
Under effect, so that the positions such as weld seam of seawaterline of the two-way stainless steel material of HDR are in the guarantor for being able to suppress electrochemical corrosion
It protects in current potential.
Figure 13 is of the present invention for inhibiting and monitoring the system of seawater pipe electrochemical corrosion in a kind of reality
Apply the system block diagram in mode.
As shown in figure 13, in the present embodiment, in seawaterline device systems, it is mounted with that 4 dissimilar metal galvanic couples are exhausted
Edge structure G1, G2, G3, G4, connection cables access galvanic couple monitoring device G-PCE；It is mounted with 2 passive electrode structures PE1, PE2,
The PE-PCE1 unit and PE-PCE2 unit of connection cables access passive electrode monitoring device；It is mounted with 2 active electrode structures
AE1, AE2, connection cables access the AE-PCE1 unit and AE-PCE1 unit of active electrode monitoring device.
The galvanic couple current potential installed on galvanic couple structure G1, G2, G3, G4 is surveyed in piece extraction wire access monitoring device and handles control
Channel switching module CSB in unit G-PCE surveys piece signal and is switched on to voltage under microprocessor module MCU control
It is initial to measure galvanic couple survey piece both ends at the beginning of the installation of galvanic couple insulation system by monitoring modular GVDM and original state processing module ISPE
Potential difference V01、V02、V03、V04, and the alarm potential difference of galvanic couple insulation system criticality alarm is obtained according to original state calculation processing
Vbj1、Vbj2、Vbj3、Vbj4And the failure potential difference V of galvanic couple insulation systemsx1、Vsx2、Vsx3、Vsx4.Galvanic couple monitoring device G-PCE
Processing unit communicatively by V01、V02、V03、V04, Vbj1、Vbj2、Vbj3、Vbj4, Vsx1、Vsx2、Vsx3、Vsx4.Data upload
In upper industrial personal computer EIPC and database DBMS.In daily monitoring, upper industrial personal computer EIPC is real by processing and control element (PCE) G-PCE
The V measuredt1、Vt2、Vt3、Vt4Value is compared with the data of database D BMS, that is, can determine whether the insulation shape of galvanic couple insulation system
State normally whether.
The conducting wire of passive electrode PE1, PE2 and the installation of two lateral line metals access the passive electrode monitoring dress of monitoring device
Set PE-PCE1 and PE-PCE2.Passive electrode and two sides metal parts are respectively mounted connection cables, and one shares four route cables access prison
Control device.It is illustrated with the working condition of wherein first via electrode current.It is cathode, electrode that valve member, which is Cu alloy material, in figure
It is ferrous alloy material is anode, relay normally closed contact K when normal work1aClosure, the protection electricity generated in Seawater
Stream is detected by current detection module ECDM.In the initial state, measuring protective current is Ipe01, on being uploaded to after data processing
Position industrial personal computer EIPC, is calculated criticality alarm electric current I by EIPCpebj1, the I of each passive electrodepe0And IpebjData storage
In database D BMS.In daily monitoring, upper industrial personal computer EIPC will locate what passive electrode monitoring device PE-PCE was surveyed
IpetValue is compared with the data of database D BMS, that is, can determine whether electrode it is working properly whether.If measured current Ipet1It is low
In alarming value, EIPC by passive electrode monitoring device PE-PCE can control, and disconnect normally-closed contact K1a, connect normally opened touching
Point K1b, access voltage detection module EVDM measures anode voltage, if anode aging voltage is low, system alarm is prompted to electrode
Repair replacement.But if seawaterline equipment does not arrive the maintenance replacement cycle of plan, K can be kept at this time1aIt disconnects, connects
K1c, auxiliary current source ACS1 is accessed, makes protection electricity under the microprocessor module MCU control of passive electrode monitoring device PE-PCE
Flow Ipet1Reach or approach initial value Ipe01, pipeline is made to obtain sustainable protection.
The cable of active electrode AE1, AE2 and the installation of two lateral line metals access the active electrode monitoring dress of monitoring device
Set AE-PCE1 and AE-PCE2.Active electrode and two sides metal parts are respectively mounted connection cables, and one shares four route cables access prison
Control device.It is illustrated with the working condition of wherein first via electrode current.Pipeline in figure is that the two-way stainless steel material of HDR is
Cathode, electrode are that Pd-Ag substrate alloy material is anode.Active electrode and the protection potential set between protection pipeline equipment according to
Host computer EIPC and database DBMS are stored in after the material property and size calculating determination of each section of seawaterline equipment.If setting
Protection potential is Vaes1, protective current I when normal work in Seawateraes1It is exported by controlled current source CCS, voltage inspection
Survey module EVDM real-time detection anode voltage Vaet1, current detection module ECDM real-time detection protective current Iaet1, controlled in processing
Under the control of unit AE-PCE, adjustment controlled current source CCS output, so that error delta=│ (Vaet1-Vaes1)/Vaes1│≤Δs
(in the present embodiment, ΔsIt can be for 0.1).Under anode current effect, so that the seawaterline of the two-way stainless steel material of HDR
The positions such as weld seam be in and be able to suppress in the protection potential of electrochemical corrosion.
It can thus be seen that this case is in use, to have may include that several large number of dissimilar metals are adjacent couple
Component, monitoring device can each cabin be set as needed in the form of " substation " different number monitoring device (such as electricity
Even monitoring device G-PCE, passive electrode monitoring device PE-PCE or active electrode monitoring device AE-PCE) and upper industrial personal computer
Communication connection, by external electrical intervening mode, the current potential of galvanic couple insulation system and each partial component to seawater pipe
Difference carries out the monitoring and control of continuous and effective, that is, passes through the prison of potential difference the different metal materials between entire seawater pipe
It surveys and controls, achieve the purpose that monitor seawater pipe electrochemical corrosion.
In summary as can be seen that system of the present invention is by providing a kind of electric intervening mode to seawater pipe
Electrochemical corrosion in seawater pipe is inhibited and monitored, by electric to dissimilar metal in seawater pipe
Even binding site install dissimilar metal galvanic couple insulation system and continue to carry out potential monitoring, in seawaterline, pump, valve member etc. by more
The binding site of a dissimilar metal component composition installs electrode, is provided in passive or active mode and is able to suppress electrochemical corrosion
Protective current, to continue to monitor and regulate and control the potential difference of binding site, to effectively inhibit seawater pipe equipment
Electrochemical corrosion between dissimilar metal.
In addition, may be implemented to continue to monitor by the system and data summarization, to control seawaterline system comprehensively
State of insulation and potential difference data between system different metal materials, and then the electrochemical corrosion of seawater pipe is controlled comprehensively
State.
In addition, method of the present invention similarly has above advantages and beneficial effect.
It should be noted that prior art part is not limited to given by present specification in protection scope of the present invention
Embodiment, all prior arts not contradicted with the solution of the present invention, including but not limited to first patent document, formerly
Public publication, formerly openly use etc., it can all be included in protection scope of the present invention.
In addition, it should also be noted that, institute in the combination of each technical characteristic and unlimited this case claim in this case
Combination documented by the combination or specific embodiment of record, all technical characteristics documented by this case can be to appoint
Where formula is freely combined or is combined, unless generating contradiction between each other.
It should be noted that embodiment enumerated above is only specific embodiments of the present invention.Obviously not office of the invention
It is limited to above embodiments, the similar variation or deformation made therewith are that those skilled in the art can be straight from present disclosure
It connects and obtains or be easy to just to associate, be within the scope of protection of the invention.
Claims (14)
1. a kind of for inhibiting and monitoring the system of seawater pipe electrochemical corrosion characterized by comprising
Dissimilar metal galvanic couple insulation system, is connected in seawater pipe, and the dissimilar metal galvanic couple structure includes: to be located at
The first hardware in seawater pipe, the second hardware in seawater pipe, and it is set to the first gold medal
Belong to the first insulator between element and the second hardware, first hardware and the second hardware are respectively by difference
Metal be made；
The galvanic couple current potential being arranged in pairs surveys piece, is connected to the both ends of dissimilar metal galvanic couple insulation system；
Galvanic couple monitoring device is surveyed piece with the galvanic couple current potential and is connect, to survey the potential difference that piece measures, judgement according to galvanic couple current potential
The state of insulation of dissimilar metal galvanic couple insulation system；
Passive electrode structure, it is insulated to be connected between the metal equipment of seawater pipe, energy is provided in passive mode
Enough inhibit the first protective current of electrochemical corrosion；The passive electrode structure includes: first anode part, is connected to as yin
Between the metal equipment of pole；Second insulator is set between the first anode part and the metal equipment；
Passive electrode monitoring device is connect with the passive electrode structure, to monitor the state of passive electrode structure；
Active electrode structure, insulated to be connected between the metal equipment of seawater pipe, the active electrode structure packet
Include: second plate part is connected between the metal equipment as cathode；
Third insulator is set between the second plate part and the metal equipment；
Active electrode monitoring device is connect with the active electrode structure, and the active electrode monitoring device includes: controlled electricity
Stream source makes the active electrode structure output be able to suppress the second protective current of electrochemical corrosion.
2. the system as claimed in claim 1, which is characterized in that the passive electrode structure is provided in passive mode and can be pressed down
First protective current of electrochemical corrosion processed is by selecting the material of first anode part to realize.
3. system as claimed in claim 2, which is characterized in that the material of the first anode part is selected as: compared to sea
The metal equipment of water piping system, first anode part is in Seawater in current potential negative enough.
4. system as claimed in claim 3, which is characterized in that the first anode part is ferrous alloy anode member.
5. the system as claimed in claim 1, which is characterized in that the material of the second plate part is selected as: compared to sea
The metal equipment of water piping system, chemical characteristic of the second plate part in Seawater is more stable and can bear bigger electric current
Density.
6. system as claimed in claim 5, which is characterized in that the second plate part is silver-base alloy anode member.
7. the system as claimed in claim 1, which is characterized in that the passive electrode monitoring device includes:
First processor module；
First current monitoring module is connect by the first normally closed relay with passive electrode structure, and and first processor
Module connection, to detect the provide under passive electrode structure original state first protection electricity under the control of first processor module
Flow Ipe0And real-time detection surveys the first protective current Ipet；The actual measurement protective current IpetIt is protected with first under original state
Protect electric current Ipe0It compares, to judge the state of passive electrode structure.
8. system as claimed in claim 7, which is characterized in that further include:
Upper industrial personal computer is connect with the first processor module；
Database is connect with the upper industrial personal computer；
Wherein, the upper industrial personal computer is based on the first protective current I under original statepe0Obtain criticality alarm electric current Ipebj, and
By the first protective current I under original statepe0With criticality alarm electric current IpebjIt is stored in the database；The upper industry control
Machine is by the first protective current I of the actual measurementpetWith the current data I of databases storagepe0、IpebjIt compares, to judge passive electrical
The state of pole structure normally whether.
9. system as claimed in claim 8, which is characterized in that the passive electrode monitoring device further include:
First voltage monitoring modular is connect by the second normally opened relay with passive electrode structure, and and first processor
Module connection disconnects the first relay, the second relay of connection to pass through under the control of first processor module, to detect nothing
The voltage of source electrode structure, the first voltage monitoring modular are connect with the upper industrial personal computer.
10. system as claimed in claim 8 or 9, which is characterized in that the passive electrode monitoring device further include:
Auxiliary current source is connect by normally opened third relay with passive electrode structure, and is connected with first processor module
It connects, the first relay, connection third relay is disconnected to pass through under the control of first processor module, so that passive electrode
Auxiliary protection electric current I is providedpefz。
11. the system as claimed in claim 1, which is characterized in that the active electrode monitoring device includes:
Second processor module；
Controlled current source is connect with passive electrode structure, and is connect with second processor module, in second processor module
Control under second protective current is provided；
Second current monitoring module, connect with active electrode structure, and connect with second processor module, with real-time detection
Two protective currents；
Second voltage monitoring modular, connect with active electrode structure, and connect with second processor module, has with real-time detection
The anode voltage of source electrode structure.
12. system as claimed in claim 11, which is characterized in that the second processor module is based on the second current detecting mould
The data of block and the transmission of second voltage detection module, control the output of controlled current source, so that error delta=│ (Vaet-Vaes)/
Vaes│≤Δs；Wherein VaesFor the protection voltage of setting, VaetFor the anode voltage of the active electrode structure of real-time detection, ΔsFor
The error amount of setting.
13. system as claimed in claim 8, which is characterized in that the galvanic couple monitoring device includes:
Channel switching module is surveyed piece with the galvanic couple current potential and is connect；
Tertiary voltage monitoring modular is connect with the channel switching module；
Third processor module is connect with the tertiary voltage monitoring modular, and is connect with the upper industrial personal computer；
Original state processing module is connect with the third processor module and tertiary voltage monitoring modular；
Wherein, under the control of third processor module: the tertiary voltage monitoring modular measures galvanic couple current potential and surveys piece both ends
Initial potential difference V0And the actual measurement potential difference V measured in real timet；The original state processing module is based on initial potential difference V0?
To the alarm potential difference V of dissimilar metal galvanic couple insulation systembjWith the failure potential difference V of dissimilar metal galvanic couple insulation systemsx；
The V that the upper industrial personal computer transmits third processor module0、Vbj、VsxIt is stored in database, and according to the actual measurement
Potential difference VtWith the voltage data V of databases storage0、Vbj、VsxComparison, judge the insulation of dissimilar metal galvanic couple insulation system
State normally whether.
14. it is a kind of for inhibiting and monitoring the method for seawater pipe electrochemical corrosion, it uses as in claim 1-13
System described in any one is implemented.
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| CN112147065A (en) * | 2020-09-10 | 2020-12-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Device for monitoring electrical insulation between dissimilar metal structures and method for monitoring electrical insulation state between dissimilar metal structures under working conditions |
| CN114384126A (en) * | 2021-12-30 | 2022-04-22 | 山东龙港硅业科技有限公司 | Method for online detecting failure of marine vessel pipeline isolation galvanic couple connection insulating pad |
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