CN108823571A - A kind of intelligent seawaterline sacrificial anode structure having criticality alarm function and its etch state in-situ monitoring method - Google Patents
A kind of intelligent seawaterline sacrificial anode structure having criticality alarm function and its etch state in-situ monitoring method Download PDFInfo
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- CN108823571A CN108823571A CN201810068456.XA CN201810068456A CN108823571A CN 108823571 A CN108823571 A CN 108823571A CN 201810068456 A CN201810068456 A CN 201810068456A CN 108823571 A CN108823571 A CN 108823571A
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- seawaterline
- anode
- outer tube
- core
- sacrificial anode
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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
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/10—Electrodes characterised by the structure
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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
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
-
- 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
- C23F2213/32—Pipes
Abstract
The present invention provides a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function, including anode core, outer tube and critical induction alarm device.Anode core is hollow tubular type core, and anode core is nested in inside outer tube.Outer tube is connected with after sealing at anode core two-port with seawaterline.Above-mentioned anode core outer surface is equipped with several annular ditch grooves, and each annular ditch groove is connected by a connection groove for intersecting at them, forms instruction channel；The corresponding position for connecting groove with anode core internal layer on outer tube is provided with a hole, and aperture is communicated with groove is connect, and tapping installs critical induction alarm device.Critical induction alarm device end has two conductive contacts probe, and conductive contact is probe internally provided in being used as trigger unit in connection groove.After the present invention, it can be prompted according to its sound-light alarm in sacrificial anode using when consuming to a certain extent, sacrificial anode is replaced in time, solves the problems, such as not judging its replacing construction in use process.
Description
Technical field
The present invention relates to naval vessel sea water piping system anticorrosion field, specifically a kind of intelligence for having criticality alarm function
Seawaterline sacrificial anode structure and its etch state in-situ monitoring method.
Background technique
Naval vessel seawater pipe often will appear etching problem in use, not only affects ship and normally navigates
Row reduces technical performance, and greatly increases the maintenance cost of ship.Anode loss protection is to be widely used both at home and abroad at present
A kind of very economical effective anticorrosive measure, wherein open circuit potential is suitable, capacitance is larger because having for ferroalloy sacrificial anode
(930Ah/K or more), current efficiency are high, be uniformly dissolved, the features such as anode life is long is widely used in copper seawaterline, cooling
Device, condenser, stainless steel structure cathodic protection in, anti-corrosion effect is good.Moreover, the iron ion that ferroalloy anodic solution gets off
Rich iron film can also be formed on copper alloy surface, further improve the corrosion resistance of copper alloy pipeline.
Ferroalloy anode design will usually consider its protection scope and projected life when applying, and ferroalloy anode is molten at itself
The protection for treating protection pipeline is realized while solution consumption.Its protection will be lost when its own corrosion is depleted to be attached thereto
Cathodic protection effect of metal, it is necessary to which it is replaced.
But the protection scope of actually iron anode and service life and Theoretical Design still have gap, since ferroalloy sacrifices sun
Pole is usually to pass through flange to be installed in seawater pipe, and crewman can not observe iron in use process under actual condition
The situation of anode, therefore when replace and can not determine.In addition, ferroalloy anode is also typically present during corroding consumption
The case where uneven dissolution, local corrosion dissolve the consumption that can accelerate ferroalloy anode, cause its service life that design is not achieved
Service life.These actual conditions cause crewman that can not find that ferroalloy anode fails in time, so that processing can not be taken timely measure,
So that causing the generation of some corrosion leakage problems, is effectively run to pipe-line system and bring hidden danger.Urgently develop a kind of intelligence
Can sections alloy anode, its depleted or severe local corrosion arrive the critical state needed replacing when, rapidly perception concurrently
Alarm signal out, so that crewman's timely learning and taking measures.
The patent that critical value is alarmed is consumed to for ferroalloy sacrificial anode currently without retrieving.Possible patent is such as
CN1784511 discloses a kind of device when predetermined portions for being used to indicate sacrificial anode are corroded, which includes embedding
Enter the rfid device inside sacrificial anode, the exposed exterior surface of the rfid device and sacrificial anode is pre- at a distance of one
Set a distance, before the predetermined portions of sacrificial anode are corroded, detection system can detect the presence of rfid device,
After the predetermined portions are corroded, the rfid device is separated with sacrificial anode and is no longer detected.The party
Method is effective for homogeneous corrosion, and non-uniform corrosion such as occurs and is difficult to timely respond to, while is effective for open system, for pipeline
Internal system signal is difficult to emit and receive.Patent CN105331982A discloses a kind of sacrificial anode structure and its corrosion shape
State inspection method, the anode interior have duct, erode to the exposing of certain position duct, and corrosive medium enters duct, open nut,
Liquid medium exudation is checked whether there is, judges whether the anode needs replacing with this.The device can only be by personnel to setting
Standby site inspection just can determine that the Expenditure Levels of anode, have great limitation for the use for the environment that inconvenient personnel enter
Property, and equally exist problem only effective to point of observation.Patent CN201652766U is disclosed a kind of detectable and is prompted sacrificial
The water heater that domestic animal anode exhausts is embedded with the elastomer of deformation in anode, when anode is gradually used up to elastomer, elasticity
Interior to be gradually recovered original shape dress, two contact joints are allowed to conducting alarm.The device is equally just for the uniform of rod anode
Corrosion.
In conclusion application of the ferroalloy sacrificial anode in seawater pipe is further extensive, but it is the absence of a kind of energy
The seawaterline sacrificial anode of enough intelligent alarms timely when corrosion reaches critical value.
Summary of the invention
Technical assignment of the invention is to be used for seawater pipe anti-corrosion problems faced for conventional tube sacrificial anode,
Propose a kind of intelligent seawaterline ferroalloy sacrificial anode for having criticality alarm function.After the present invention, when seawater pipe
Road sacrificial anode alarming in time when being consumed to critical value in use, it can not be judged by solving in use process
The problem of replacing construction.It can be prompted according to its sound-light alarm in sacrificial anode using when consuming to a certain extent, to sacrificial anode
It is replaced in time.
The technical solution adopted by the present invention to solve the technical problems is：
1, the present invention provides a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function, including anode core, outer
Casing and critical induction alarm device,
The anode core is hollow tubular type core as sacrificial anode and protects the seawaterline being attached thereto, and anode core is nested in
Inside outer tube；
After sealing at the outer tube and anode core two-port, pass through fixed device（Such as connecting flange）It is connected with seawaterline
It connects；
Above-mentioned anode core outer surface is equipped with several annular ditch grooves, the connection groove phase that each annular ditch groove intersects at them by one
Perforation forms instruction channel；
Above-mentioned outer tube is material identical with seawaterline, connect the corresponding position of groove with anode core internal layer on outer tube
It is provided with a hole, aperture is communicated with groove is connect, and tapping installs critical induction alarm device, the critical induction alarm device end
Portion tool there are two conductive contact pop one's head in, conductive contact it is probe internally provided in connection groove in be used as trigger unit.
As a further improvement of that present invention, the critical induction alarm device includes package casing, power supply unit, sound report
Alert unit, light alarm unit and trigger unit, package casing material are consistent with outer tube material, and power supply unit is packaged in
In casing, acoustic alarm unit, light alarm unit are set to one end of package casing, the triggering list that two conductive contact probes are constituted
Member is set to the other end of package casing, and power supply unit, acoustic alarm unit, light alarm unit and trigger unit form low power dissipation electron
Warning circuit.
As a further improvement of that present invention, the power supply unit is minicell, can be button cell etc., acoustic alarm
Unit can be small-sized buzzer, and light alarm unit can be light emitting diode.
As a further improvement of that present invention, the organic 3-10 annular ditch groove processed of the anode core outer surface,
Depth is 1-5 mm.
As a further improvement of that present invention, the outer tube and anode core are assembled by way of interference fit,
And welded seal processing is carried out to it at two-port.
As a further improvement of that present invention, the anode core is tubular type iron anode core, and material is comprising Mn, Cr and micro-
Measuring Al is the common ferroalloy sacrificial anode materials such as alloying element, and the seawaterline material is copper and copper alloy or stainless steel
Deng.
As a further improvement of that present invention, the package casing is connected through a screw thread the tapping for being installed on outer tube.
As a further improvement of that present invention, the conductive contact probe material is corrosion resistant metal material.
As a further improvement of that present invention, the both ends of the package casing are equipped with insulation pressure-resistant seal.
As a further improvement of that present invention, epoxy resin or polytetrafluoroethyl-ne can be selected in the material of the insulation pressure-resistant seal
Alkene etc..
2, the present invention separately provides a kind of seawaterline sacrificial anode structure erosion state in-situ monitoring method, and this method is based on
Above-mentioned seawaterline sacrificial anode structure,
When anode core does not erode to outer tube, it is connected between two conductive contacts probe without seawater electrolysis matter, at this time criticality alarm
Device does not start；
When anode core dissolved corrosion is to outer tube, i.e., when corrosion depth reaches the annular ditch groove on the outside of anode core, seawaterline
In seawater flow into annular ditch groove and come together at connection groove, seawater electrolysis matter will connect two conductive contacts probe, make electricity
Road conducting, criticality alarm device starting concurrently speak, visual alarm.
As a further improvement of that present invention, in the installation process of anode core, the aperture of outer tube is in seawaterline
It is convenient for critical induction alarm device so that critical induction alarm device is in the horizontal front of seawaterline in outside horizontal position
Alarm detection and observation.
A kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function of the invention and its etch state are former
Position monitoring method, compared with prior art caused by beneficial effect be：
1, effective for non-uniform corrosion inside seawater pipe, it plays a protective role to seawaterline is attached thereto；
2, when sacrificial anode dissolution consumption reaches critical value, critical induction alarm device issues sound-light alarm, prompts to carry out more
It changes.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of anode core of the present invention；
Attached drawing 2 is the schematic diagram of sacrificial anode structure of the present invention；
Attached drawing 3 is the structure chart of the critical induction alarm device of the present invention；
Attached drawing 4 is the schematic diagram of low power dissipation electron warning circuit of the present invention；
Attached drawing 5 is the scheme of installation of sacrificial anode structure of the present invention.
In figure, 1, annular ditch groove, 2, connection groove, 3, anode core, 4, outer tube, 5, aperture, 6, acoustic alarm unit, 7, light
Alarm unit, 8, insulated enclosure, 9, power supply unit, 10, trigger unit, 11, seawaterline, 12, connecting flange, 13, encapsulation it is outer
Shell, 14, critical induction alarm device.
Specific embodiment
1-5 with reference to the accompanying drawing, to a kind of intelligent seawaterline sacrificial anode for having criticality alarm function of the invention
Structure and its etch state in-situ monitoring method are described in detail below.
Embodiment
As shown in attached drawing 1,2,5, a kind of 11 sacrificial anode of intelligent seawaterline having criticality alarm function of the invention
Structure mainly includes anode core 3, outer tube 4 and critical induction alarm device 14.Anode core 3 is hollow tubular type core, as sacrificial
Domestic animal anode protects the seawaterline 11 being attached thereto.Anode core 3 is nested in inside outer tube 4, outer tube 4 and 3 both ends of anode core
After being sealed at mouthful, it is connected directly by connecting flange 12 and the flange of seawaterline 11.Critical induction alarm device 14 is mounted in outer
On casing 4, when 3 corrosion dissolution of anode core and when being depleted to 4 wall of outer tube, sound-light alarm can be issued.
As shown in Fig. 1, anode core 3 is tubular type iron anode core 3, and it is alloy member that material, which is comprising Mn, Cr and trace of Al,
The common ferroalloy sacrificial anode material such as element.There are the several of machining in 3 outer surface of anode core（It can be 3-10）Item is cyclic annular
Groove 1, depth are 1-5 mm, and each annular ditch groove 1 is connected by a connection groove 2 for intersecting at them, and it is logical to form instruction
Road.
As shown in Fig. 2, outer tube 4 is material identical with seawaterline 11 or connecting flange 12, such as copper and copper alloy
Or stainless steel etc., outer tube 4 is assembled by way of interference fit with anode core 3, and is welded at two-port to it
Connect encapsulation process.The corresponding position for connecting groove 2 with 3 internal layer of anode core on outer tube 4 is provided with a hole, aperture 5 and connection ditch
Slot 2 communicates, and critical induction alarm device 14 is installed at aperture 5.There are two conductive contacts for critical 14 end of induction alarm device tool
Probe, conductive contact it is probe internally provided in connection groove 2 in be used as trigger unit 10.
As shown in Fig. 3, critical induction alarm device 14 includes package casing 13, power supply unit 9, acoustic alarm unit 6, light
Alarm unit 7 and trigger unit 10.13 material of package casing is consistent with 4 material of outer tube, and power supply unit 9 is packaged in encapsulation
In shell 13, acoustic alarm unit 6, light alarm unit 7 are set to one end of package casing 13, the touching that two conductive contact probes are constituted
Bill member 10 is set to the other end of package casing 13, power supply unit 9, acoustic alarm unit 6, light alarm unit 7 and trigger unit 10
Form low power dissipation electron warning circuit.
For the micromation for realizing critical induction alarm device 14, power supply unit 9 is minicell, can be button cell
Deng acoustic alarm unit 6 can be small-sized buzzer, and light alarm unit 7 can be light emitting diode.The conductive touching of trigger unit 10
Probe material is corrosion resistant metal material.
Attached drawing 4 is the annexation figure of each element in low power dissipation electron warning circuit, and wherein G is minicell, and H1 is small
Type buzzer, H2 are light emitting diode, and K is normally opened trigger unit 10, and R1, R2 are two big resistance, and optocoupler V1, triode V2 are anti-
Only extraneous electrical signals damage alarming device.
For convenience of the installation and removal of critical induction alarm device 14, package casing 13 is designed as hollow cylinder, end
Portion is equipped with external screw thread, is connected through a screw thread at the aperture 5 for being installed on outer tube 4.The both ends of package casing 13 are equipped with insulated enclosure
8, and epoxy resin or polytetrafluoroethylene (PTFE) etc. can be selected in the ability with resistance to 2 MPa water pressure, the material of insulated enclosure 8.
For the observation and alarm detection convenient for critical induction alarm device 14, in the installation process of anode core 3, outer tube
4 aperture 5 is in 11 outside horizontal position of seawaterline, so that critical induction alarm device 14 is in the level of seawaterline 11
Front.
A kind of 11 sacrificial anode structure of intelligent seawaterline having criticality alarm function of the invention realizes process such as
Under：
When anode core 3 does not erode to outer tube 4, it is connected between two conductive contacts probe without seawater electrolysis matter, at this time critical report
Alarm device does not start；
When 3 dissolved corrosion of anode core is to outer tube 4, i.e., when corrosion depth reaches the annular ditch groove 1 in 3 outside of anode core, seawater
Seawater in pipeline 11 is flowed into annular ditch groove 1 and is come together at connection groove 2, and seawater electrolysis matter will connect two conductive contacts and visit
Head, make low power dissipation electron warning circuit be connected, criticality alarm device starting concurrently speak, visual alarm.
It should be noted that in the present invention, seawaterline 11 can be round tube or square tube, anode core 3, annular ditch groove 1
Shape it is identical as seawaterline 11.Each annular ditch groove 1 is connected by a connection groove 2 for intersecting at them, forms instruction
Channel, herein intersection can be Fig. 1, intersecting vertically in 2, be also possible to inclination intersection at an angle.3 appearance of anode core
The depth of face annular ditch groove 1 be 1-5 mm, with specific reference to 11 material of seawaterline, 3 material of anode core and pipeline caliber difference into
Row selection.
Test example
As shown in Fig. 5, this test example is pacified sacrificial anode structure of the invention for protecting corronil seawaterline 11
Between two corronil seawaterlines 11,4 material of outer tube of the sacrificial anode structure is corronil.The anode core 3
For ferroalloy sacrificial anode, length and thickness are according to the requirements of installation space and the requirement of projected life of specific seawaterline 11
It is determined.The horizontal front that direction makes critical induction alarm device 14 be in pipeline is paid attention in installation process, in order to alarm
Detection and observation.Seawaterline 11 is tested through accelerated corrosion after a period of time, when the consumption of iron anode reaches corronil
When outer tube wall, critical induction alarm device 14 issues sound-light alarm, prompts replacement 11 ferroalloy sacrificial anode of seawaterline in time.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Except for the technical features described in the specification, it all is technically known to those skilled in the art.
Claims (10)
1. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function, which is characterized in that including anode core, outside
Casing and critical induction alarm device,
The anode core is hollow tubular type core as sacrificial anode and protects the seawaterline being attached thereto, and anode core is nested in
Inside outer tube；
The outer tube is connected with after sealing at anode core two-port with seawaterline；
Above-mentioned anode core outer surface is equipped with several annular ditch grooves, the connection groove phase that each annular ditch groove intersects at them by one
Perforation forms instruction channel；
Above-mentioned outer tube is material identical with seawaterline, connect the corresponding position of groove with anode core internal layer on outer tube
It is provided with a hole, aperture is communicated with groove is connect, and tapping installs critical induction alarm device, the critical induction alarm device end
Portion tool there are two conductive contact pop one's head in, conductive contact it is probe internally provided in connection groove in be used as trigger unit.
2. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 1, special
Sign is that the critical induction alarm device includes package casing, power supply unit, acoustic alarm unit, light alarm unit and triggering
Unit, package casing material are consistent with outer tube material, and power supply unit is packaged in package casing, acoustic alarm unit, light
Alarm unit is set to one end of package casing, and the trigger unit that two conductive contact probes are constituted is set to the another of package casing
End, power supply unit, acoustic alarm unit, light alarm unit and trigger unit form warning circuit.
3. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 1 or 2,
It is characterized in that, the organic 3-10 annular ditch groove processed of the anode core outer surface, depth is 1-5 mm.
4. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 1 or 2,
It is characterized in that, the outer tube and anode core are assembled by way of interference fit, and are welded at two-port to it
Connect encapsulation process.
5. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 1 or 2,
It is characterized in that, the anode core is tubular type iron anode core, and material is the ferroalloy for being alloying element comprising Mn, Cr and trace of Al
Sacrificial anode material.
6. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 2, special
Sign is that the package casing is connected through a screw thread the tapping for being installed on outer tube.
7. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 1 or 2,
It is characterized in that, the conductive contact probe material is corrosion resistant metal material.
8. a kind of intelligent seawaterline sacrificial anode structure for having criticality alarm function according to claim 2 or 6,
It is characterized in that, the both ends of the package casing are equipped with insulation pressure-resistant seal.
9. a kind of according to claim 1, intelligent seawaterline sacrificial anode structure for having criticality alarm function described in 2 or 6,
It is characterized in that, the aperture of outer tube is in horizontal position on the outside of seawaterline in the installation process of anode core.
10. a kind of seawaterline sacrificial anode structure erosion state in-situ monitoring method, which is characterized in that this method is based on right
It is required that seawaterline sacrificial anode structure described in 1,2 or 6；
When anode core does not erode to outer tube, it is connected between two conductive contacts probe without seawater electrolysis matter, at this time criticality alarm
Device does not start；
When anode core dissolved corrosion is to outer tube, i.e., when corrosion depth reaches the annular ditch groove on the outside of anode core, seawaterline
In seawater flow into annular ditch groove and come together at connection groove, seawater electrolysis matter will connect two conductive contacts probe, make electricity
Road conducting, criticality alarm device starting concurrently speak, visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810068456.XA CN108823571B (en) | 2018-01-24 | 2018-01-24 | Intelligent seawater pipeline sacrificial anode structure with critical alarm function and corrosion state in-situ monitoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810068456.XA CN108823571B (en) | 2018-01-24 | 2018-01-24 | Intelligent seawater pipeline sacrificial anode structure with critical alarm function and corrosion state in-situ monitoring method thereof |
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| CN110360744A (en) * | 2019-05-31 | 2019-10-22 | 青岛经济技术开发区海尔热水器有限公司 | Gas heater with anticorrosive heat exchanger tube |
| CN113913831A (en) * | 2021-10-18 | 2022-01-11 | 江南造船(集团)有限责任公司 | Seawater pipeline corrosion prevention device and using method |
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|---|---|---|---|---|
| CN110360744A (en) * | 2019-05-31 | 2019-10-22 | 青岛经济技术开发区海尔热水器有限公司 | Gas heater with anticorrosive heat exchanger tube |
| CN110360744B (en) * | 2019-05-31 | 2021-11-12 | 青岛经济技术开发区海尔热水器有限公司 | Gas water heater with corrosion-resistant heat exchange tube |
| CN113913831A (en) * | 2021-10-18 | 2022-01-11 | 江南造船(集团)有限责任公司 | Seawater pipeline corrosion prevention device and using method |
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|---|---|
| CN108823571B (en) | 2020-06-23 |
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