CN207051164U - The experimental rig that research copper or aluminium corrode in demineralized water - Google Patents
The experimental rig that research copper or aluminium corrode in demineralized water Download PDFInfo
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- CN207051164U CN207051164U CN201720977931.6U CN201720977931U CN207051164U CN 207051164 U CN207051164 U CN 207051164U CN 201720977931 U CN201720977931 U CN 201720977931U CN 207051164 U CN207051164 U CN 207051164U
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- kettle
- copper
- demineralized water
- aluminium
- experimental rig
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Abstract
The utility model provides a kind of experimental rig studied copper or aluminium and corroded in demineralized water.Experimental rig provided by the utility model, it is characterised in that including：Kettle；Kettle cover, it is covered on kettle to closure；Wide mouth glass bottle, it is arranged in kettle, for holding demineralized water；Intake section, comprising：The air inlet short tube being arranged on kettle cover, and the soft extension of polytetrafluoroethylene (PTFE) that upper end is connected with the outlet at bottom of air inlet short tube, lower end is stretched into wide mouth glass bottle；Outlet portion, is arranged on kettle cover, for being vented；Test piece suspension part, comprising：Installed part on kettle cover inner surface, and installation are used to for copper or aluminium test piece to be suspended in wide mouth glass bottle the suspension line at correct position on mountings；And temperature control portion, comprising：The thermocouple component for being plugged on kettle cover and stretching into kettle, it is sleeved on the polytetrafluoroethylene (PTFE) outer tube of thermocouple component upper and lower end sealing, the thermoregulator being connected with thermocouple component.
Description
Technical field
It the utility model is related to a kind of experimental rig studied copper or aluminium and corroded in demineralized water.
Background technology
Generator tubular copper conductor corrodes in inner cold water, has with oxygen content, the pH value of inner cold water (namely demineralized water)
Close, oxygen content, the pH value of inner cold water (demineralized water) are namely leaked having a great influence into the air of system by system sealing.It is solidifying
Corrosion of the vapour device system material aluminium in generating set condensate, has with oxygen content, the pH value of condensate (namely demineralized water)
Close, oxygen content, the pH value of condensate (demineralized water) are namely leaked having a great influence into the air of system by system sealing.Will
Generated electricity by corrosion of the experimental rig analog study generator tubular copper conductor in inner cold water and condenser system materials of aluminum
Corrosion in unit condensate, that is, the corrosion of copper, aluminium in demineralized water is studied by experimental rig, it is desirable to experimental rig is close
Closing property is good, can adjust and control temperature, energy deoxygenation, and experimental rig own material does not influence the corrosion of copper, aluminium.
Good leak tightness, can adjust and control temperature, can the experimental rig of deoxygenation can be commercially available, such as autoclave purchased in market
Sealing is fine, can adjust and control temperature by temperature controller, and liquid phase probe tube and vapour phase sample tap can be used to logical nitrogen deoxygenation.
But the kettle of autoclave purchased in market, kettle cover, liquid phase probe tube and vapour phase sample tap, thermocouple sheath are all stainless steels at present
Matter, the corrosion of copper, aluminium in demineralized water can be influenceed, such as form galvanic corrosion with copper or aluminium, can not truly, conducting copper exactly
Or aluminium is in the research of desalination aqueous corrosion, it is difficult to obtains accurate and effective test data.
Utility model content
The utility model is, and it is an object of the present invention to provide the metal such as a kind of research copper, aluminium in order to solving the above problems and carry out
The experimental rig corroded in demineralized water, it can truly, accurately study the corrosion of copper, aluminium in demineralized water.
The utility model to achieve these goals, employs following scheme.
The utility model provides a kind of experimental rig studied copper or aluminium and corroded in demineralized water, it is characterised in that including：
Kettle；Kettle cover, it is covered on kettle to closure；Wide mouth glass bottle, it is arranged in kettle, for holding demineralized water；Intake section,
Comprising：The air inlet short tube being arranged on kettle cover, and upper end is connected with the outlet at bottom of air inlet short tube, wide mouth glass bottle is stretched into lower end
The soft extension of interior polytetrafluoroethylene (PTFE)；Outlet portion, is arranged on kettle cover, for being vented；Test piece suspension part, comprising：It is arranged on
Installed part on kettle cover inner surface, and installation are used to copper or aluminium test piece being suspended on suitable position in wide mouth glass bottle on mountings
Put the suspension line at place；And temperature control portion, comprising：The thermocouple component for being plugged on kettle cover and stretching into kettle, is sleeved on thermoelectricity
On even component and lower end closure polytetrafluoroethylene (PTFE) outer tube, be connected with thermocouple component, for adjusting steady temperature in kettle
Thermoregulator.
The experimental rig that research copper or aluminium involved by the utility model corrode in demineralized water, can also have such
Feature：Wide mouth glass bottle is close to kettle setting, and volume is the 1/3 of kettle volume.
The experimental rig that research copper or aluminium involved by the utility model corrode in demineralized water, can also have such
Feature：The length of air inlet short tube is 1cm.
The experimental rig that research copper or aluminium involved by the utility model corrode in demineralized water, can also have such
Feature：The lower end of extension to the distance of open mouth glass bottom of bottle be 1cm.
The experimental rig that research copper or aluminium involved by the utility model corrode in demineralized water, can also have such
Feature：Installed part is hanging hole, and outlet portion is outlet short tube.
The effect of utility model and effect
According to experimental rig of the present utility model, cover on kettle to kettle cover closure so that being formed in kettle closed
Interior environment, demineralized water is held using wide mouth glass bottle and wide mouth glass bottle is stretched into as extension using teflon hose
It is interior and polytetrafluoroethylene (PTFE) outer tube is set with outside thermocouple component can be effectively prevented from that demineralized water is contaminated and copper or aluminium
Generation galvanic corrosion etc., copper or aluminium test piece suspension can be fixed by test piece suspension part, copper or aluminium test piece is covered in kettle cover
The correct position that can be located at when upper in wide mouth glass bottle, is connected by air inlet short tube with inert gas feedway, to desalination
Inert gas discharge oxygen is passed through in water, outlet portion is connected with dissolved oxygen detection means, and temperature control portion can adjust and control kettle
The thermostat temperature of interior environment；So, different thermostat temperatures are set by temperature control portion, indifferent gas is led to certain flow by intake section
Body deoxygenation different time controls different oxygen in demineralized water, regulates the pH value of demineralized water in kettle as experiment desirable value,
After off-test by observe copper or aluminium strip state, survey in wide mouth glass bottle the copper of demineralized water or the content of aluminium and copper or
The mass change of aluminium test piece, it is possible to easily study copper or aluminium in different temperatures, different oxygen, different pH value desalinations
Corrosion condition in water, and obtain unfailing test data.
Further, oxygen content can be obtained under each pH value condition to copper or the shadow of aluminium corrosion rate according to above-mentioned test data
PH value is to copper or the influence curve of aluminium corrosion rate under the conditions of ringing curve and each oxygen content, and then can predict different oxygen
Permit copper or the maximum of aluminium corrosion minimum under condition of different pH in the lower optimal pH scope for suppressing copper or aluminium corrosion and demineralized water
Perhaps oxygen content.
Brief description of the drawings
Fig. 1 is the external structure signal for the experimental rig that research copper or the aluminium that the utility model is related to corrode in demineralized water
Figure；
Fig. 2 is the internal structure signal for the experimental rig that research copper or the aluminium that the utility model is related to corrode in demineralized water
Figure.
In above-mentioned Fig. 1 and 2, each part numbers are as follows：
10. the experimental rig that research copper or aluminium corrode in demineralized water：20. kettle, 30. kettle covers, 40. wide mouth glass bottles,
50. intake section, 60. outlet portions, 70. test piece suspension parts and 80. temperature control portions；
51. air inlet short tube, 52. extensions；
71. installed part, 72. suspension lines；
81. thermocouple component, 82. polytetrafluoroethylene (PTFE) outer tubes；
A. inert gas feedway/nitrogen cylinder, B. copper or aluminium test piece, C. dissolved oxygen monitors.
Embodiment
The experimental rig corroded referring to the drawings to research copper or the aluminium involved by the utility model in demineralized water is made
Elaborate.
<Embodiment>
As illustrated in fig. 1 and 2, in the present embodiment, studying the experimental rig 10 that copper or aluminium corrode in demineralized water includes：Kettle
20th, kettle cover 30, wide mouth glass bottle 40, intake section 50, outlet portion 60, test piece suspension part 70 and temperature control portion 80.
It is covered on kettle 20 to the closure of kettle cover 30.
Wide mouth glass bottle 40 is arranged in kettle 20, and for holding demineralized water, wide mouth glass bottle 40 is close to kettle 20 and set,
Volume is 1/3 or so of the volume of kettle 20.
Intake section 50 is connected with inert gas feedway A, and in the present embodiment, inert gas feedway A is nitrogen cylinder,
The flowmeter for being used for adjusting throughput is provided between nitrogen cylinder A and intake section 50.Intake section 50 includes：Air inlet short tube 51 and prolong
Stretch pipe 52.Air inlet short tube 51 is arranged on kettle cover 30, and runs through kettle cover 30, and its upper end exposes the upper table of kettle cover 30 as entrance
Face, lower end are stretched into kettle 20 as outlet, and the lower end of air inlet short tube 51 should be as short as possible, in the present embodiment, entirely enters shortness of breath
The length of pipe 51 is about 1cm；The upper end of extension 52 is connected with the outlet of air inlet short tube 51, and lower end is stretched into wide mouth glass bottle 40
Demineralized water in, for introducing inert gas into demineralized water to exclude oxygen, in the present embodiment, extension 52 is polytetrafluoroethyl-ne
Alkene flexible pipe, it will not make copper or aluminium that galvanic corrosion occur.When kettle cover 30 is covered after on kettle 20, extension 52 is located at open mouth glass
Bottle 40 is interior, does not contact the position of bottle wall, and the distance at its lower end to the bottom of wide mouth glass bottle 40 is about 1cm.
Outlet portion 60 is arranged on kettle cover 30, and for being vented, in the present embodiment, outlet portion 60 is outlet short tube.
Test piece suspension part 70 includes：Installed part 71 and suspension line 72.Installed part 71 is fixed on the inner surface of kettle cover 30, this reality
It is hanging hole to apply installed part 71 in example；The top of suspension line 72 is arranged on hanging hole 71, and bottom is used for fixed copper or aluminium test piece B and will
Copper or aluminium test piece B are suspended in wide mouth glass bottle 40, and in the present embodiment, suspension line 72 is nylon wire, copper in gas phase, liquid phase or
At the correct position that aluminium test piece B is hung in wide mouth glass bottle 40 by adjusting the length of nylon wire.
Temperature control portion 80 includes：Thermocouple component 81, polytetrafluoroethylene (PTFE) outer tube 82 and thermoregulator (do not show in figure
Show).Thermocouple component 81 is plugged on kettle cover 30 and stretched into kettle 20；Polytetrafluoroethylene (PTFE) outer tube 82 is sleeved on thermocouple structure
On part 81, upper end open, lower end closed；Thermoregulator is connected with thermocouple component 81, is constant in kettle 20 for adjusting
Temperature, in the present embodiment, thermoregulator is PID Self-tuning System temperature controllers.When kettle cover 30 is covered after on kettle 20, thermocouple structure
Part 81 and polytetrafluoroethylene (PTFE) outer tube 82 are exactly in the position that wide mouth glass bottle 40 is interior, does not contact bottle wall.
Above is the concrete structure explanation for the experimental rig 10 that the present embodiment is provided, below to using the experimental rig 10
Copper test method of corrosion research in demineralized water is carried out to illustrate.
The test method for the experimental rig 10 that the present embodiment is provided, comprises the following steps：
The wide mouth glass bottle 40 for being contained with demineralized water is placed in kettle 20；
Copper test piece B is fixed on suspension line 72, and adjusts the length of suspension line 72, makes to cover copper test piece B after kettle cover 30
It can be suspended in wide mouth glass bottle 40 at correct position；
Kettle cover 30 is covered on kettle 20, experiment thermostat temperature is set using thermoregulator；
The entrance of air inlet short tube 51 is connected with nitrogen cylinder A, outlet portion 60 is connected with dissolved oxygen monitor C, with prison
Oxygen determination content, it is passed through from the nitrogen of dissolved oxygen monitor C discharges in the beaker equipped with water；
High pure nitrogen deoxygenation is passed through with certain flow, stops logical nitrogen after predetermined duration of ventilation is reached, then, by outlet
Portion 60 is connected with nitrogen cylinder A, then takes liquid portion to be connected with measuring cell using intake section 50 as demineralized water, kettle after outlet portion 60 ventilates
Pressure rise in body 20, the demineralized water in wide mouth glass bottle 40 are pressed into extension 52, and then along extension 52 from air inlet
Short tube 51 is flowed out in measuring cell, and conductivity meter and pH meter are inserted in measuring cell to the electrical conductivity and pH for detecting demineralized water respectively
Value.
Repeat the above steps, change thermostat temperature, logical nitrogen time, you can to copper in different temperatures, different oxygen, no
Studied with the corrosion condition in the demineralized water of pH value.
The above-mentioned experimental rig 10 that is there is provided using the present embodiment and test method simulate nuclear power station, thermal power plant's generator
The water quality and service condition of water- cooling generator:
(1) grade II desalted water is put in wide mouth glass bottle 40, hangs red copper test piece B, passes through (the control of letting nitrogen in and deoxidizing different time
Desalination oxygen content in water：The letting nitrogen in and deoxidizing time is longer, and oxygen content is lower), it is 40 DEG C to control the thermostat temperature of kettle 20, and research copper exists
Corrosion in 40 DEG C of different oxygen demineralized waters, expected result (such as table 2) is obtained.
The corrosion condition of copper in 2 40 DEG C of different oxygen demineralized waters of table
As shown in Table 2：
1) within the specific limits, as the increase of letting nitrogen in and deoxidizing time is the reduction of oxygen content, copper content is in declining in water
Trend, illustrate that the corrosion rate of copper reduces with the increase i.e. reduction of oxygen content of logical nitrogen time；
2) influence of the oxygen content to copper corrosion is not nonlinear, the minimum oxygen content of copper corrosion be present.
(2) put in wide mouth glass bottle 40 and be pre-adjusted the grade II desalted water of different pH value, hung red copper test piece B, passed through
Letting nitrogen in and deoxidizing different time (control desalination oxygen content in water：The letting nitrogen in and deoxidizing time is longer, and oxygen content is lower), control kettle 20 is permanent
Temperature is 40 DEG C, corrosion of the research copper in 40 DEG C of different oxygens, different pH value demineralized waters, has obtained expected result
(such as table 3).
The corrosion condition of copper in 3 40 DEG C of different pH value of table, different oxygen demineralized water
As shown in Table 3：
1) within the specific limits, as the increase of letting nitrogen in and deoxidizing time is the reduction of oxygen content, copper content is in declining in water
Trend, illustrate that the corrosion rate of copper reduces with the increase i.e. reduction of oxygen content of logical nitrogen time；
2) the letting nitrogen in and deoxidizing time it is shorter i.e. oxygen content it is higher when, the corrosion of copper reduces with the rise of pH value, illustrates one
Determine under oxygen content, corrosion of the copper in demineralized water can be suppressed by improving pH value；
3) the letting nitrogen in and deoxidizing time is longer when i.e. oxygen content is relatively low, and the corrosion that copper is raised with pH value also reduces, but now pH liters
It is obvious to the inhibition of copper corrosion that the high inhibition to copper corrosion improves pH value when not having oxygen content higher；
4) influence of oxygen content and pH value to copper corrosion is not nonlinear, the minimum oxygen content of copper corrosion and pH be present
Value.
Above-mentioned result of the test shows：The Optimal pH for suppressing copper corrosion in (1) 40 DEG C of demineralized water, under each oxygen content be present
Scope, the pH value of cooling water is controlled effectively to slow down the corrosion of copper in OK range under each oxygen content；(2) low temperature removes
In salt solution, under each pH value condition, the oxygen content catastrophe point of copper corrosion reduction be present, Control for Oxygen Content in demineralized water is being mutated
Below the corresponding oxygen content of point, it can effectively suppress the corrosion of copper.
Above-mentioned result of the test also indicates that the factor such as corrosion rate of the copper in demineralized water and oxygen content and pH value has close pass
System, oxygen content and pH value are individually variant to the influence degree of copper corrosion, according to oxygen content under each pH value condition to copper corrosion
PH value can predict different oxygen to the influence curve of copper corrosion speed under the conditions of the influence curve of speed and each oxygen content
Make the minimum the maximum allowable oxygen content of copper corrosion in the lower optimal pH scope for suppressing copper corrosion and demineralized water under condition of different pH.
Above example is only the illustration done to technical solutions of the utility model.Involved by the utility model
The experimental rig that research copper or aluminium corrode in demineralized water is not merely defined in structure described in the embodiment above, and
It is to be defined by claim limited range.The utility model one of ordinary skill in the art are done on the basis of the embodiment
Any modification or supplement or equivalence replacement, all in the claimed scope of the utility model.
Claims (5)
- A kind of 1. experimental rig studied copper or aluminium and corroded in demineralized water, it is characterised in that including：Kettle；Kettle cover, closure it is covered on the kettle；Wide mouth glass bottle, it is arranged in the kettle, for holding demineralized water；Intake section, comprising：The air inlet short tube being arranged on the kettle cover, and upper end and the outlet at bottom phase of the air inlet short tube Even, the soft extension of polytetrafluoroethylene (PTFE) that lower end is stretched into the wide mouth glass bottle；Outlet portion, it is arranged on the kettle cover, for being vented；Test piece suspension part, comprising：Installed part on the kettle cover inner surface, and be used to incite somebody to action on the installed part Copper or aluminium test piece are suspended on the suspension line in the wide mouth glass bottle at correct position；AndTemperature control portion, comprising：The thermocouple component for being plugged on the kettle cover and stretching into the kettle, is sleeved on the thermocouple On component and lower end closure polytetrafluoroethylene (PTFE) outer tube, be connected with the thermocouple component, for adjusting constant temperature in kettle The thermoregulator of degree.
- 2. the experimental rig that research copper according to claim 1 or aluminium corrode in demineralized water, it is characterised in that：Wherein, the wide mouth glass bottle is close to the kettle setting, and volume is the 1/3 of the kettle volume.
- 3. the experimental rig that research copper according to claim 1 or aluminium corrode in demineralized water, it is characterised in that：Wherein, the length of the air inlet short tube is 1cm.
- 4. the experimental rig that research copper according to claim 1 or aluminium corrode in demineralized water, it is characterised in that：Wherein, the lower end of the extension to the distance of the open mouth glass bottom of bottle be 1cm.
- 5. the experimental rig that research copper according to claim 1 or aluminium corrode in demineralized water, it is characterised in that：Wherein, the installed part is hanging hole, and the outlet portion is outlet short tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977931.6U CN207051164U (en) | 2017-08-07 | 2017-08-07 | The experimental rig that research copper or aluminium corrode in demineralized water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977931.6U CN207051164U (en) | 2017-08-07 | 2017-08-07 | The experimental rig that research copper or aluminium corrode in demineralized water |
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|---|---|
| CN207051164U true CN207051164U (en) | 2018-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720977931.6U Expired - Fee Related CN207051164U (en) | 2017-08-07 | 2017-08-07 | The experimental rig that research copper or aluminium corrode in demineralized water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478567A (en) * | 2017-08-07 | 2017-12-15 | 武汉大学 | The experimental rig and method that simulation generator tubular copper conductor corrodes in inner cold water |
-
2017
- 2017-08-07 CN CN201720977931.6U patent/CN207051164U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478567A (en) * | 2017-08-07 | 2017-12-15 | 武汉大学 | The experimental rig and method that simulation generator tubular copper conductor corrodes in inner cold water |
| CN107478567B (en) * | 2017-08-07 | 2020-08-07 | 武汉大学 | Test device and method for simulating corrosion of hollow copper conductor of generator in internal cold water |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20180807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |