CN206553221U - Corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system - Google Patents
Corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system Download PDFInfo
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- CN206553221U CN206553221U CN201621493738.7U CN201621493738U CN206553221U CN 206553221 U CN206553221 U CN 206553221U CN 201621493738 U CN201621493738 U CN 201621493738U CN 206553221 U CN206553221 U CN 206553221U
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- corrosion
- heat
- transfer pipe
- insulation
- closeouts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model is related to field of sea water desalting technology, discloses a kind of corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system, the etch state of pipe outer wall so that monitor conducts heat, and improves production efficiency.Corrosion probe component includes：Heat-transfer pipe blank；First insulation closeouts and second insulation closeouts, respectively the two ends with heat-transfer pipe blank be tightly connected；Conductive pole, is placed in heat-transfer pipe blank and is made electrical contact with heat-transfer pipe blank；Conducting rod, electrically connects with conductive pole and stretches out the first insulation closeouts.Low temperature multi-effect seawater desalting system is applied to using the corrosion monitor of the corrosion probe establishment of component, the etch state for pipe outer wall of conducting heat can accurately be monitored, so as to improve production efficiency, production cost is greatly lowered, economic loss is reduced.
Description
Technical field
The utility model is related to field of sea water desalting technology, and more particularly to corrosion monitor and low-temperature multi-effect seawater is light
Change system.
Background technology
In the evaporator of low temperature multiple-effect distillation sea water desalting equipment, heat-transfer pipe is generally passed using the small thin-wall metal of thickness
Hot material, so as to reduce thermal resistance, improve Heat Transfer in Evaporating Falling Film efficiency.However, in seawater degassing insufficient or evaporator sealing
In the case of local damage, the concentration hot sea water of heat transfer tube outer surface flowing, easily the corrosion of aggravation heat-transfer pipe, in turn results in heat-transfer pipe
Corrosion failure.This corrosion failure can cause stop production to overhaul, can not only reduce production efficiency, can also cause great economic damage
Lose.
It is general in the prior art to use electrochemistry on-line monitoring technique, by monitor the trade mark identical with heat-transfer pipe it is bar-shaped,
The corrosion condition of needle-like, sheet metal probe, to reflect indirectly the etch state of heat-transfer pipe.In the prior art, corrosion monitoring is filled
Put and generally comprise at least one pair of working electrode, reference electrode, by the way that electrode is had into negative-feedback differential amplifier circuit with outside
Potentiostat and galvanometer connection, the measuring electrode current potential under open-circuit condition, or measurement response current is calculated under polarized state
The mode of polarization resistance and corrosion rate is obtained, the corrosion condition of working electrode is judged, so as to enter to the etch state of heat-transfer pipe
Row analysis.
Prior art has a drawback in that, although the working electrode and heat-transfer pipe of monitoring device are using identical material,
Because processing technology is different, during actual monitoring, the etch state and the corrosion shape of heat transfer pipe outer wall of working electrode surface
State still has larger difference, thus its measurement result is difficult to accurately reflect actual conditions.
How corrosion shape of the monitor heat transfer pipe outer wall under true low temperature multiple-effect distillation sea water desalting work condition environment
State, is technical problem urgently to be resolved hurrily at present.
Utility model content
The utility model provides corrosion monitor and low temperature multi-effect seawater desalting system, so that monitor conducts heat
The etch state of pipe outer wall, improves production efficiency.
The utility model provides a kind of corrosion probe component, including：
Heat-transfer pipe blank；
First insulation closeouts and second insulation closeouts, respectively the two ends with heat-transfer pipe blank be tightly connected；
Conductive pole, is placed in heat-transfer pipe blank and is made electrical contact with heat-transfer pipe blank；
Conducting rod, electrically connects with conductive pole and stretches out the first insulation closeouts.
It is preferred that, the conducting rod be contact screw, the contact screw respectively with first insulation closeouts, conductive pole and
Second insulation closeouts threaded connection.
Preferably, the first insulation closeouts are insulation closure flange, the flange of the insulation closure flange and heat transfer
Pipe part is tightly connected.
Preferably, the conductive pole and heat-transfer pipe blank inwall elastic conjunction.
Preferably, the corrosion probe component also includes outer tube, the outer tube has water inlet and delivery port, described
Heat-transfer pipe blank is located in the outer tube, and the part that the conducting rod extends the first insulation closeouts is located at the outer tube
Outside.
In the technical solution of the utility model, the corrosion probe component, as working electrode, is adopted using heat-transfer pipe blank
When being monitored with the corrosion monitor of the corrosion probe establishment of component to heat-transfer pipe, it is ensured that heat-transfer pipe blank surface is rotten
Erosion state is identical with the surface corrosion state of heat-transfer pipe, so as to improve the accuracy of measurement result, improves production efficiency, significantly
Production cost is reduced, economic loss is reduced.
The utility model also provides a kind of corrosion monitor, including potential difference meter, reference electrode and at least one as before
State the corrosion probe component described in any technical scheme, the potential difference meter and the reference electrode and at least one described corrosion
The conducting rod connection of probe assembly.
Preferably, the corrosion probe component also includes outer tube, the outer tube has water inlet and delivery port, described
Heat-transfer pipe blank is located in the outer tube, and the conducting rod stretches out the first part for insulating closeouts and is located at the outer tube
Outside；
The reference electrode is arranged on the outer tube, and one end of the reference electrode is located at outside outer tube, the other end
In outer tube, and the reference electrode is tightly connected with the outer tube.
Preferably, the corrosion monitor also includes galvanometer, the galvanometer and the outer tube and described at least one
The conducting rod connection of individual corrosion probe component.
Preferably, also including the storage device being connected with potential difference meter, the measurement result for storing the potential difference meter.
It is preferred that, at least one described corrosion probe component is two, the second insulation closure of two corrosion probe components
The end of part is fixedly connected.
Optionally, the end convex-concave assembly connection of the second insulation closeouts of described two corrosion probe components.
Optionally, it is respectively equipped with sealing between the heat-transfer pipe blank and the first insulation closeouts and the second insulation closeouts
Pad.
In the technical solution of the utility model, the potential difference meter junction corrosion probe assembly and ginseng of the corrosion monitor
Than electrode, the measuring electrode current potential under open-circuit condition judges the corrosion condition of heat-transfer pipe blank by the current potential of measurement, so that right
The etch state of heat-transfer pipe is analyzed.Therefore, the corrosion monitor is applied to low temperature multi-effect seawater desalting system, can be right
The etch state for pipe outer wall of conducting heat carries out long-term tracking and monitoring in real time, so as to improve production efficiency, considerably reduces production
Cost.
The utility model also provides a kind of low temperature multi-effect seawater desalting system, including as described in foregoing any technical scheme
Corrosion monitor.
The corrosion monitor of the low temperature multi-effect seawater desalting system can monitor the corrosion shape of heat transfer pipe outer wall in real time
State, the accuracy of monitoring result is higher, so as to be conducive to the service life of extension system, improves production efficiency, is greatly lowered
Production cost.
Brief description of the drawings
Fig. 1 is a structural representation of the corrosion probe component of the utility model embodiment one；
Fig. 2 is another structural representation of the corrosion probe component of the utility model embodiment one；
Fig. 3 is the structural representation of the corrosion monitor of the utility model embodiment two；
Fig. 4 is a structural representation of the corrosion monitor of the utility model embodiment three；
Fig. 5 is another structural representation of the corrosion monitor of the utility model embodiment three.
Reference：
1- corrosion probe components；2- heat-transfer pipe blanks；The insulation closeouts of 3- first；
The insulation closeouts of 4- second；5- conductive poles；6- conducting rods；7- outer tubes；
8- water inlets；9- delivery ports；10- reference electrodes；11- corrosion monitors；
12- connectors；13- sealing gaskets.
Embodiment
For the etch state of monitor heat transfer pipe outer wall, production efficiency is improved, the utility model embodiment is provided
Corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system.To make the purpose of this utility model, technical side
Case and advantage are clearer, specific embodiment is lifted below the utility model is described in further detail.
Embodiment one
As shown in figure 1, the utility model embodiment one provides a kind of corrosion probe component 1, including：
Heat-transfer pipe blank 2；
First insulation closeouts 3 and second insulation closeouts 4, respectively the two ends with heat-transfer pipe blank 2 be tightly connected；
Conductive pole 5, is placed in heat-transfer pipe blank 2 and is made electrical contact with heat-transfer pipe blank 2；
Conducting rod 6, electrically connects with conductive pole 5 and stretches out the first insulation closeouts 3.
As shown in figure 1, in the present embodiment, the first insulation closeouts 3, the insulation of heat-transfer pipe blank 2 and second closeouts 4 are close
Envelope connection, prevents the infiltration of processing medium.It is preferred that, the first insulation closeouts 3, the insulation closeouts 4 of heat-transfer pipe blank 2 and second
Keep coaxial and external diameter is identical, so that the seawater flowing on the surface of corrosion probe component 1 is uniform, it is to avoid the irregular flowing of seawater
Electrochemical reaction on the surface of heat-transfer pipe blank 2 produces influence, improves the accuracy of monitoring result.
First insulation closeouts 3 use insulated non-metal material, it may for example comprise igelite or polytetrafluoroethylene (PTFE) modeling
Material.The first insulation closeouts 3 use igelite under normal circumstances；When ocean temperature is higher, the first insulation closeouts 3
Using polytetrafluoroethylplastic plastic.The concrete shape of first insulation closeouts 3 is not limited, for example, in the present embodiment, the first insulator seal
Blocking piece 3 is insulation closure flange, and the flange of insulation closure flange is tightly connected with heat-transfer pipe blank 2, consequently facilitating corrosion probe
The installation and removal of component 1.
Preferably, the inwall and conductive pole 5 of heat-transfer pipe blank 2 are interference fitted, it is ensured that heat-transfer pipe blank 2 and conductive pole 5 it
Between can transmit electric signal.Heat-transfer pipe blank 2 from in-service heat-transfer pipe interception pipe fitting or with heat-transfer pipe phase same material and production
Stock's pipe fitting of technique, for example, material can be aluminium alloy, copper alloy, stainless steel or titanium alloy, so as to ensure that heat-transfer pipe
Blank 2 can be accurately reflected in the etch state of labour heat transfer pipe outer wall.Generally, the outside dimension of in-service heat-transfer pipe be 19~
25mm, 0.4~2.0mm of wall thickness.In order to be further ensured that the surface state of heat-transfer pipe blank 2 is identical with heat-transfer pipe, preferably, passing
The external diameter of heat pipe blank 2 is 19~25mm, and wall thickness is 0.4~2.0mm.
The specific material of conductive pole 5 is not limited, for example, can be aluminium alloy conductive pole or copper alloy conductive pole, preferably with
The equal or higher material of the thermal coefficient of expansion of heat-transfer pipe blank 2, so as to ensure the electricity between conductive pole 5 and heat-transfer pipe blank 2
Signal transmission is not influenceed by outside temperature.
Continue referring to as shown in figure 1, in the present embodiment, conducting rod 6 is contact screw, one end of conducting rod 6 is stretched out
Conductive pole 5 is threadedly coupled with the second insulation closeouts 4, and the other end stretches out the first insulation closeouts 3, is conducive to corrosion probe component
1 assembly or disassembly.The specific material of conducting rod 6 is not limited, preferably with the preferable copper alloy of electric conductivity.
In the technical solution of the utility model, the corrosion probe component 1 uses heat-transfer pipe blank 2 as working electrode,
When the corrosion monitor made using the corrosion probe component 1 is monitored to heat-transfer pipe, it is ensured that the table of heat-transfer pipe blank 2
Face etch state is identical with the surface corrosion state of heat-transfer pipe, so as to improve the accuracy of measurement result.
As shown in Fig. 2 in the present embodiment, corrosion probe component 1 also includes outer tube 7, outer tube 7 has the He of water inlet 8
Delivery port 9, heat-transfer pipe blank 2 is located in outer tube 7, and the part that conducting rod 6 extends the first insulation closeouts 3 is located at outer tube
Outside 7.
The material of outer tube 7 is not limited, for example, can be plastics steel or metal.The insulation closeouts 3 of outer tube 7 and first
It is tightly connected, makes inwall, the first insulation closeouts 3, the outer wall of heat-transfer pipe blank 2 and the second insulation shape of closeouts 4 of outer tube 7
Into for seawater flow chamber, in addition water inlet 8 and delivery port 9 can control sea flow velocity so that the table of heat-transfer pipe blank 2
Surface state is identical with heat-transfer pipe, and it is light that the corrosion monitor made using the corrosion probe component 1 is applied to low-temperature multi-effect seawater
Change system, can accurately be monitored to the etch state for pipe outer wall of conducting heat, so as to improve production efficiency, life is greatly lowered
Cost is produced, economic loss is reduced.
Embodiment two
As shown in figure 3, the utility model provides a kind of corrosion monitor 11, including potential difference meter, the and of reference electrode 10
At least one is such as the corrosion probe component 1 of previous embodiment one, potential difference meter and reference electrode 10 and at least one corrosion probe
The conducting rod 6 of component 1 is connected.
Potential difference meter junction corrosion probe assembly 1 and reference electrode 10, when corrosion probe component 1 and reference electrode 10 are placed in
When in seawater, potential difference meter measuring electrode current potential under open-circuit condition judges the corrosion feelings of heat-transfer pipe blank 2 by measurement result
Condition, so as to analyze the etch state of heat-transfer pipe.Potential difference meter preferably uses V grades of measurement sensitivity μ high sensitivity current potential
Difference meter or the potentiostat with negative-feedback differential amplifier circuit, so that accurately measuring electrode current potential.
In the technical solution of the utility model, the potential difference meter junction corrosion probe assembly 1 of the corrosion monitor 11
With reference electrode 10, the measuring electrode current potential under open-circuit condition judges the corrosion feelings of heat-transfer pipe blank 2 by the current potential of measurement
Condition, so as to analyze the etch state of heat-transfer pipe.Therefore, the corrosion monitor 11 is applied to low-temperature multiple-effect seawater desalination
System, can carry out long-term tracking and monitoring in real time, so as to improve production efficiency, significantly to the etch state for pipe outer wall of conducting heat
Reduce production cost.
When at least one corrosion probe component 1 also includes the outer tube 7 with water inlet 8 and delivery port 9, outer tube 7
Using metal jacket pipe, the metal jacket pipe can visit corrosion as corrosion polarization curve corrosion monitoring technology to electrode
Needle assemblies 1 are applied to corrosion polarization curve corrosion monitoring technology.The particular type of metal jacket pipe is not limited, for example, can be stainless
Steel, it is preferred that metal jacket pipe uses the stainless steel outer sleeve pipe of the anti-corrosion grades of 316L or higher.
The corrosion monitor 11 also includes galvanometer, the galvanometer and outer tube 7 and at least one foregoing corrosion probe
The conducting rod 6 of component 1 is connected.When injection seawater in outer tube 7, galvanometer is under polarized state by measuring not same polarization electricity
Response current under position, which is calculated, obtains polarization resistance and corrosion rate, judges the corrosion condition of heat-transfer pipe blank 2, so as to heat transfer
The etch state of pipe is analyzed.Galvanometer preferably reaches pA grades of galvanometer with measurement sensitivity, so as to accurately measure micro-
Small response current.By the corrosion monitor 11, OCP method, linear polarization method, weak polarization method and electrification can be used
A variety of electrochemistry on-line monitoring techniques such as impedance method are learned to be monitored the etch state of heat-transfer pipe.
Reference electrode 10 is arranged on outer tube 7, and one end of reference electrode 10 is located at outside outer tube 7, and the other end is located at outer
In sleeve pipe 7, and reference electrode 10 is tightly connected with outer tube 7.As shown in figure 3, specifically, reference electrode 10 is arranged at outer tube
On 7, and one end of reference electrode 10 is sealingly extended in outer tube 7, and the end of the one end extended in outer tube 7
Face and heat-transfer pipe blank 2 are apart from for 1~2mm, so as to ensure one end and heat transfer pipe that reference electrode 10 extended in outer tube 7
Part 2 is identical.
The connected mode of reference electrode 10 and outer tube 7 is not limited, in the present embodiment, reference electrode 10 and outer tube 7 it
Between be provided with connector 12.The connected mode of reference electrode 10 and connector 12 is not limited, for example, can be welding or mode connects for screw；
Connector 12 is tightly connected with outer tube 7, so as to avoid seawater from being oozed out by connector 12.
Reference electrode 10 from have it is long-acting, stably, the long-acting solid reference electrode 10 of low-maintenance feature, it may for example comprise
Solid Silver silver chloride reference electrode 10 and manganese dioxide reference electrode 10, so that reducing interior reference solution is lost in the current potential drift produced
Shifting problem, improves measurement stability.
Preferably, corrosion monitor 11 also includes the storage device being connected with potential difference meter and galvanometer, for storing
The measurement result of potential difference meter and galvanometer.
Embodiment three
As shown in figure 4, the corrosion monitor 11 that the present embodiment is provided, compared to embodiment two, is visited provided with two corrosion
Needle assemblies 1, the end connection of the second insulation closeouts 4 of two corrosion probe components 1.The second of two corrosion probe components 1
The connected mode of insulation closeouts 4 is not limited, it may for example comprise for bonding, rivet interlacement or mode connects for screw.As shown in figure 5, in this reality
Apply in example, the end convex-concave assembly connection of the second insulation closeouts 4 of two corrosion probe components 1.
Preferably, heat-transfer pipe blank 2 and first insulation closeouts 3 between, heat-transfer pipe blank 2 and second insulate closeouts 4
Between be provided with sealing gasket 13, the particular type of sealing gasket 13 is not limited, it is for instance possible to use heatproof silicagel pad or rubber blanket, thickness
For 1~4mm.
The corrosion monitor 11 be applied to low temperature multi-effect seawater desalting system, can to conduct heat pipe outer wall etch state
Long-term tracking and monitoring in real time is carried out, so as to improve production efficiency, production cost is considerably reduced.In addition, passing through the corrosion
Monitoring device 11, can also use OCP method, linear polarization method, weak polarization method, Electrode with Electrochemical Impedance Spectroscopy and electrochemistry noise
A variety of electrochemistry on-line monitoring techniques such as mensuration are monitored to the etch state of heat-transfer pipe.
Example IV
The utility model also provides a kind of low temperature multi-effect seawater desalting system, including such as the corrosion monitoring of previous embodiment three
Device 11.
The corrosion monitor of the low temperature multi-effect seawater desalting system can monitor the corrosion shape of heat transfer pipe outer wall in real time
State, the accuracy of monitoring result is higher, so as to be conducive to the service life of extension system, improves production efficiency, is greatly lowered
Production cost.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claim and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (13)
1. a kind of corrosion probe component, it is characterised in that including：
Heat-transfer pipe blank；
First insulation closeouts and second insulation closeouts, respectively the two ends with heat-transfer pipe blank be tightly connected；
Conductive pole, is placed in heat-transfer pipe blank and is made electrical contact with heat-transfer pipe blank；
Conducting rod, electrically connects with conductive pole and stretches out the first insulation closeouts.
2. corrosion probe component as claimed in claim 1, it is characterised in that the conducting rod is contact screw, the conduction
Screw is threadedly coupled with the first insulation closeouts, conductive pole and the second insulation closeouts respectively.
3. corrosion probe component as claimed in claim 1, it is characterised in that the first insulation closeouts are insulation plugging method
Orchid, the flange of the insulation closure flange is tightly connected with heat-transfer pipe blank.
4. corrosion probe component as claimed in claim 1, it is characterised in that the conductive pole and heat-transfer pipe blank inwall interference
Assembling.
5. the corrosion probe component as described in any one of Claims 1 to 4, it is characterised in that the corrosion probe component is also wrapped
Outer tube is included, the outer tube has water inlet and delivery port, and the heat-transfer pipe blank is located in the outer tube, the conduction
Bar stretches out the first part for insulating closeouts and is located at outside the outer tube.
6. a kind of corrosion monitor, it is characterised in that including potential difference meter, reference electrode and at least one such as claim 1
Corrosion probe component described in~5 any one, the potential difference meter and the reference electrode and at least one described corrosion probe
The conducting rod connection of component.
7. corrosion monitor as claimed in claim 6, it is characterised in that
The corrosion probe component also includes outer tube, and the outer tube has water inlet and delivery port, the heat-transfer pipe blank
In the outer tube, the conducting rod stretches out the first part for insulating closeouts and is located at outside the outer tube；
The reference electrode is arranged on the outer tube, and one end of the reference electrode is located at outside outer tube, and the other end is located at
In outer tube, and the reference electrode is tightly connected with the outer tube.
8. corrosion monitor as claimed in claim 7, it is characterised in that the corrosion monitor also includes galvanometer,
The galvanometer is connected with the conducting rod of the outer tube and at least one corrosion probe component.
9. corrosion monitor as claimed in claim 8, it is characterised in that also including connecting with the potential difference meter and galvanometer
The storage device connect, the measurement result for storing the potential difference meter and galvanometer.
10. corrosion monitor as claimed in claim 6, it is characterised in that at least one described corrosion probe component is two
Individual, the end of the second insulation closeouts of two corrosion probe components is fixedly connected.
11. corrosion monitor as claimed in claim 10, it is characterised in that the second of described two corrosion probe components is exhausted
The end convex-concave assembly connection of edge closeouts.
12. corrosion monitor as claimed in claim 6, it is characterised in that the heat-transfer pipe blank and the first insulation are blocked
Sealing gasket is respectively equipped between part and the second insulation closeouts.
13. a kind of low temperature multi-effect seawater desalting system, it is characterised in that including the corruption as described in any one of claim 6~12
Lose monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493738.7U CN206553221U (en) | 2016-12-30 | 2016-12-30 | Corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493738.7U CN206553221U (en) | 2016-12-30 | 2016-12-30 | Corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206553221U true CN206553221U (en) | 2017-10-13 |
Family
ID=60358862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621493738.7U Active CN206553221U (en) | 2016-12-30 | 2016-12-30 | Corrosion probe component, corrosion monitor and low temperature multi-effect seawater desalting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206553221U (en) |
-
2016
- 2016-12-30 CN CN201621493738.7U patent/CN206553221U/en active Active
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