CN209387482U - The experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity - Google Patents
The experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity Download PDFInfo
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- CN209387482U CN209387482U CN201822092002.4U CN201822092002U CN209387482U CN 209387482 U CN209387482 U CN 209387482U CN 201822092002 U CN201822092002 U CN 201822092002U CN 209387482 U CN209387482 U CN 209387482U
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Abstract
The utility model proposes a kind of experimental rigs of the high voltage electric field environmental corrosion of controllable temperature and humidity characterized by comprising the external frame that is made of insulating sheet material is arranged in external frame: geomery identical discoid top crown and bottom crown；The disk of the top crown and bottom crown edge is above each provided with a grading ring；The top crown is suspended on the top in external frame by insulating cord；Middle part in the external frame, which is horizontally disposed with, mesh-supported plate, and the bottom crown is arranged on mesh-supported plate；The top crown and bottom crown are tried to get to the heart of a matter parallel and are oppositely arranged；The top crown connects HT testing transformer；The bottom crown ground connection；The lower part of the mesh-supported plate is provided with solution tank, is provided with thermostat heating cushion below the solution tank；Airflow fan is provided in the support plate.Can under accurate simulated high-pressure electric field environment crucial conductor metal corrosion, and guarantee corrosion test safe and stable operation.
Description
Technical field
The utility model relates to power test field more particularly to a kind of high voltage electric field environmental corrosions of controllable temperature and humidity
Experimental rig.
Background technique
1 year most of time of low latitudes coastal area is in hot humid environment.Temperature and humidity is to high in electric system
The corrosion failure of pressure power transmission network has strong influence, and furthermore air-flow size will affect crucial conductor metal surface corrosion liquid
Thickness and rate of volatilization.Temperature and humidity and airflow rate affect the corrosion behavior of key metal conductor.High-voltage electricity web material
The corrosion failure of material has great puzzlement to life, the plant produced etc. of the people, while also having great personal safety hidden danger.
The corrosion phenomenon that aluminium alloy or other power equipment materials are accurately studied under the conditions of high voltage electric field is urgently solved as electric system
One of certainly the problem of.
Utility model content
In order to solve problem and shortage of the existing technology, since safety and stability high voltage electric field corrosion device is that research is high
The essential condition of piezoelectric field corrosion, long-play, high-voltage strength, local corrosion, external environment are accurately used as this practical new
The major requirement of type scheme, the utility model specifically use following technical scheme:
A kind of experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity characterized by comprising by insulating sheet material
The external frame of composition is arranged in external frame: geomery identical discoid top crown and bottom crown；On described
The disk of pole plate and bottom crown edge is above each provided with a grading ring；The top crown is suspended in external frame by insulating cord
Top；Middle part in the external frame, which is horizontally disposed with, mesh-supported plate, and the bottom crown is arranged on mesh-supported plate；Institute
State trying to get to the heart of a matter parallel and being oppositely arranged for top crown and bottom crown；The top crown connects HT testing transformer；The bottom crown
Ground connection；The lower part of the mesh-supported plate is provided with solution tank, is provided with thermostat heating cushion below the solution tank；The branch
Airflow fan is provided on fagging.
Preferably, the top crown is leveled by air level.
Preferably, the insulating sheet material is acrylic board；The insulating cord is dustless asbestos twisted rope.
Preferably, the material of the top crown and bottom crown is stainless steel；The grading ring is surface by copper foil or tinfoil paper
The ring tube of covering.
Preferably, the top crown and bottom crown are tried to get to the heart of a matter as circular flat, and the edge tried to get to the heart of a matter is transitioned into disk with rounded corner
Wall.
Preferably, the top crown connects HT testing transformer by steel pipe, is provided with protective resistance on the steel pipe,
The both ends of the protective resistance are provided with grading ring；The protective resistance is water resistance, resistance value 80K Ω.
Preferably, the top crown and bottom crown have two groups, and two top crowns connect and connect high-potting transformation
Device.
The device design scheme that the utility model and its preferred embodiment provide is simple to manufacture, is low in cost, takes full advantage of
The ordinary elements that can be touched in power test realize purpose of design and have superior performance, provide uniform
Field distribution and suitable test platform.The present embodiment device produces sufficiently uniform electricity between top crown and bottom crown
, and electric field strength can be adjusted flexibly by the spacing of control top crown and bottom crown；The chassis of bottom crown is flat as test
Platform provides sufficiently wide operating space, can be easy to carry out various test operations；It is provided simultaneously with Temperature and Humidity Control, air-flow control
System and high voltage electric field regulatory function, can stablize external condition by Temperature and Humidity Control.By installing airflow fan adjusting sample
Locate airflow rate, so that various sample possesses identical airflow rate, it is possible to reduce error.By using grading ring bucking electrode
The mode at the tips such as disk, conduit and protective resistance connecting part makes device more stable operation, and greatly improves safety
Property, utility model device still is able to stablize in the electric field environment of 750KV/m intensity, be safely operated.Pass through the high pressure of setting
The devices such as electrode, grading ring, glycerine water solution, thermostat heating cushion, airflow fan, can accurate simulated high-pressure electric field environment ShiShimonoseki
The corrosion of key conductor metal, and guarantee corrosion test safe and stable operation.In terms of method, corruption is accurately added dropwise using regional area
The method for losing liquid, without using salt spray test by the way of, under accurately control external condition, realization alternation of wetting and drying high voltage electric field
Corrosion, it is ensured that single unit system is safely operated steadily in the long term.
Detailed description of the invention
With reference to the accompanying drawings and detailed description to the further details of explanation of the utility model:
Fig. 1 is the utility model embodiment overall structure stereoscopic schematic diagram；
Fig. 2 is the utility model embodiment overall structure schematic side view；
Fig. 3 is the utility model embodiment protective resistance set-up mode schematic diagram；
Fig. 4 is the utility model embodiment Glycerine-Aqueous Solution concentration and relative humidity relation curve schematic diagram；
A, b, c are the scanning electron microscope shooting knot corroded under the conditions of 0KV/m, 200KV/m and 400KV/m 30 days respectively in Fig. 5
Fruit figure；
In figure: 1- top crown；2- bottom crown；3- grading ring (is used for upper bottom crown)；The dustless asbestos twisted rope of 4-；5- steel pipe；
6- protective resistance；61- grading ring (is used for protective resistance)；7- conducting wire；10- external frame；11- airflow fan；12- mesh-supported
Plate；13- solution tank；14- thermostat heating cushion.
Specific embodiment
For the feature and advantage of this patent can be clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make specifically
It is bright as follows:
As shown in Figure 1 and Figure 2, the present embodiment device includes: the external frame 10 being made of insulating sheet material acrylic board, sets
It sets in external frame 10: geomery identical discoid top crown 1 and bottom crown 2；Top crown 1 passes through more (extremely
Need three in triangular symmetrical less, four used in the present embodiment) dustless asbestos twisted rope 4 be suspended on it is upper in external frame 10
Portion；Middle part in external frame 10, which is horizontally disposed with, mesh-supported plate 12, and bottom crown 2 is arranged on mesh-supported plate 12；It is netted
The lower part of support plate 12 is provided with solution tank 13, and the lower section of solution tank 13 is provided with thermostat heating cushion 14；On mesh-supported plate 12
It is provided with airflow fan 11.
Wherein, top crown 1 and bottom crown 2 are tried to get to the heart of a matter as circular flat, and the edge tried to get to the heart of a matter is transitioned into disk (side) with rounded corner
Wall；The material of top crown 1 and bottom crown 2 is stainless steel.The disk of top crown 1 and bottom crown 2 edge is above each provided with a grading ring
3, grading ring 3 is the ring tube that surface is covered by copper foil or tinfoil paper；Top crown 1 and bottom crown 2 are tried to get to the heart of a matter parallel and are oppositely arranged.
Wherein, top crown 1 passes through more (at least needing three in triangular symmetrical, four are used in the present embodiment) dustless asbestos twisted ropes
4 are suspended on the top in external frame 10, and try to get to the heart of a matter downward, are leveled by high-precision air level；Bottom crown 2 is placed on level board
On, to keep horizontality, and chassis is upward.
As shown in Figure 1, Figure 3, top crown 1 connects protective resistance 6 by steel pipe 5, and protective resistance 6 can also be led to by conducting wire 7(
Cross steel pipe 5) connection HT testing transformer (high pressure generator), the both ends of protective resistance 6 are also equipped with grading ring 61, bottom crown
2 ground connection.
The safe design of test under high pressure, experimental provision is particularly important, and there are subtle leakage electricity at high pressure
Stream can all make control system the electric current of 10-20A or more occur, easily cause safety accident in During Process of Long-term Operation.In this implementation
In the design that example provides, due at the Pan Kou of stainless steel disk, rust steel disk and terminating wire and protective resistance 6 connects with conducting wire
Situations such as line is inevitably present tip in the case where being in shortage retrofit, and tip is easy to produce leakage current.And
The present embodiment creatively by increasing grading ring 3 in stainless steel disc mouth, shields at tip, it is ensured that experiment safety operation.
Grading ring 3 shields the tip in experimental provision, improves the safety of device.
In the present embodiment, the insulating cord for hanging top crown 1 can use dustless asbestos twisted rope 4.It is turned round by dustless asbestos
Rope 4 hangs on top crown 1 on overhead support, since the relative dielectric constant of air between upper bottom crown is 1.000585, adopts
It is not easy electric field with suspension design breakdown.Top crown 1 can increase higher voltage at this time, without breakdown.And pass through
Insulating cord adjusts the height of top crown 1, can lower economize on electricity field intensity not changing voltage condition, not only facilitate but also quick.
Protective resistance 6 uses high value water resistance, and solution is deionized water in resistance.Resistance value is about 80K Ω.
Each group of top crown 1 is connected by being wrapped with the heavy gauge wire of balance pipe, also can be reduced the presence at tip.It is more direct
Ground, the present embodiment replace conducting wire as connecting material using steel pipe 5, and since conducting wire is very thin, the diameter of itself is with regard to very little, just at last
A kind of tip, therefore steel pipe 5 is used to have more safety.
By adjusting upper bottom crown distance, change external transformer, so that it may obtain different high pressures.
On this basis, pass through the liquid on experimental material surface on change pole plate, so that it may simulate different corrosive environments.
Top crown 1 and bottom crown 2 can also be had to two groups simultaneously, two top crowns 1 connect and connect HT testing transformer, to obtain
Identical high input voltage, and make the spacing difference of top crown 1 and bottom crown 2 to obtain different Potential Distributings, control group each other,
It can carry out corresponding check experiment.
In addition, the variation of wind speed may be implemented by adjusting revolving speed in airflow fan 11 in the present embodiment, it can be with simulated high-pressure
The airflow rate of power transmission and transformation environment.
Glycerine-Aqueous Solution can be contained in solution tank 13, Glycerine-Aqueous Solution adjusts relatively wet by glycerol relative amount
The relationship of the relative humidity of degree, glycerol content and offer is as shown in Figure 4.
Thermostat heating cushion 14 realizes the function of constant temperature by temperature sensor, it is ensured that device internal temperature is stablized.It can
To simulate the high voltage electric field corrosion condition under condition of different temperatures.
Thus the basic test method constructed mainly comprises the steps that
Step S1: Glycerine-Aqueous Solution is injected in solution tank 13；By high voltage electric field corrosion sample after AB glue encapsulation process
It is placed on the trying to get to the heart of a matter of bottom crown 2；
Step S2: corrosive liquid is added dropwise with default rule in the region to be measured of high voltage electric field corrosion sample；
Step S3: being powered to top crown 1, observes the corrosion condition in the region to be measured of high voltage electric field corrosion sample.
Wherein, by adjusting the output voltage of HT testing transformer and the spacing of top crown 1 and bottom crown 2, control
The intensity of electric field；
Relative humidity is adjusted by glycerol relative amount in Glycerine-Aqueous Solution；
Revolving speed by adjusting airflow fan 11 controls airflow rate；
Temperature is controlled by thermostat heating cushion 14 and keeps constant temperature.
Device and method through this embodiment, the case where specifically being tested, are as follows:
Example 1: using specification is 5052 aluminium alloy of 20mm × 20mm × 2mm as corrosion sample, and specimen enclosure is risen
Come, only 20mm × 20mm surface exposure, which comes out, is used as corrosion area.Light-duty transformer voltage is adjusted to 20KV, upper bottom crown spacing
It is adjusted to 100mm and 50mm.Two electric field strong and weaks are respectively 200KV/m and 400KV/m at this time.2 × 8 samples are respectively placed in
Two sample stages are corroded.Corrosive liquid is accurately added dropwise by 100 μ L liquid-transfering guns, and makes corrosive liquid uniform fold.12 hours are one
A loop cycle.After corrosion 30 days, it is scanned testing electronic microscope.
As shown in figure 5, under 0KV/m electric field strength, aluminum alloy surface has a small number of corrosion oxidation products, base in figure a
Body surface face does not occur slight crack.In figure b, under 200KV/m electric field strength, there is finer and closely woven corrosion oxidation product, table in surface
There are many slight cracks in face.In figure c, under 400KV/m electric field strength, aluminum alloy surface has already appeared pit, and partial region is presented
Cellular out.It can be seen that current field condition has facilitation to the corrosion of aluminium alloy.
Example 2: using specification is 30mm × 30mm × 2mm carbon steel as corrosion sample, specimen enclosure is got up, only
30mm × 30mm surface exposure, which comes out, is used as corrosion area.Light-duty transformer voltage is adjusted to 40KV, and upper bottom crown spacing is adjusted to
100mm and 50mm.Two electric field strong and weaks are respectively 400KV/m and 800KV/m at this time.2 × 4 samples are respectively placed in two samples
Platform is corroded.Corrosive liquid is accurately added dropwise by 100 μ L liquid-transfering guns, and makes corrosive liquid uniform fold.12 hours are a cycle
Circulation.60 period of device stable operation, obtained result are similar with example 1.
This patent is not limited to above-mentioned preferred forms, anyone can obtain other each under the enlightenment of this patent
The experimental rig of the high voltage electric field environmental corrosion of the controllable temperature and humidity of kind form, it is all to be done according to present utility model application the scope of the patents
Equivalent changes and modifications, should all belong to the covering scope of this patent.
Claims (7)
1. a kind of experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity characterized by comprising by insulating sheet material structure
At external frame, be arranged in external frame: geomery identical discoid top crown and bottom crown；The upper pole
The disk of plate and bottom crown edge is above each provided with a grading ring；The top crown is suspended on upper in external frame by insulating cord
Portion；Middle part in the external frame, which is horizontally disposed with, mesh-supported plate, and the bottom crown is arranged on mesh-supported plate；It is described
Top crown and bottom crown are tried to get to the heart of a matter parallel and are oppositely arranged；The top crown connects HT testing transformer；The bottom crown connects
Ground；The lower part of the mesh-supported plate is provided with solution tank, is provided with thermostat heating cushion below the solution tank；The support
Airflow fan is provided on plate.
2. the experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity according to claim 1, it is characterised in that: institute
Top crown is stated to level by air level.
3. the experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity according to claim 1, it is characterised in that: institute
Stating insulating sheet material is acrylic board；The insulating cord is dustless asbestos twisted rope.
4. the experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity according to claim 1, it is characterised in that: institute
The material for stating top crown and bottom crown is stainless steel；The grading ring is the ring tube that surface is covered by copper foil or tinfoil paper.
5. the experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity according to claim 1, it is characterised in that: institute
Trying to get to the heart of a matter as circular flat for top crown and bottom crown is stated, the edge tried to get to the heart of a matter is transitioned into Pan Bi with rounded corner.
6. the experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity according to claim 1, it is characterised in that: institute
It states top crown and HT testing transformer is connected by steel pipe, be provided with protective resistance on the steel pipe, the two of the protective resistance
End is provided with grading ring；The protective resistance is water resistance, resistance value 80K Ω.
7. the experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity according to claim 1, it is characterised in that: institute
Stating top crown and bottom crown has two groups, and two top crowns connect and connect HT testing transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092002.4U CN209387482U (en) | 2018-12-13 | 2018-12-13 | The experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092002.4U CN209387482U (en) | 2018-12-13 | 2018-12-13 | The experimental rig of the high voltage electric field environmental corrosion of controllable temperature and humidity |
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| CN209387482U true CN209387482U (en) | 2019-09-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297897A (en) * | 2018-12-13 | 2019-02-01 | 福州大学 | The experimental rig and method of the high voltage electric field environmental corrosion of controllable temperature and humidity |
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2018
- 2018-12-13 CN CN201822092002.4U patent/CN209387482U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297897A (en) * | 2018-12-13 | 2019-02-01 | 福州大学 | The experimental rig and method of the high voltage electric field environmental corrosion of controllable temperature and humidity |
| CN109297897B (en) * | 2018-12-13 | 2023-08-18 | 福州大学 | Temperature and humidity controllable high-voltage electric field environment corrosion test device and method |
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