CN203096221U - Graphite electrode plate for aluminium foil corrosion - Google Patents
Graphite electrode plate for aluminium foil corrosion Download PDFInfo
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- CN203096221U CN203096221U CN 201320094525 CN201320094525U CN203096221U CN 203096221 U CN203096221 U CN 203096221U CN 201320094525 CN201320094525 CN 201320094525 CN 201320094525 U CN201320094525 U CN 201320094525U CN 203096221 U CN203096221 U CN 203096221U
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- electrode plate
- graphite electrode
- graphite
- aluminium foil
- graphite electrodes
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Abstract
The utility model discloses a graphite electrode plate for aluminium foil corrosion. The graphite electrode plate comprises a left graphite electrode, a right graphite electrode and a medium graphite electrode, wherein the space between the medium graphite electrode and the left and right graphite electrodes becomes larger from bottom to top; and the two sides of the medium graphite electrode are in step structures. The graphite electrode plate with a new structure has the beneficial effects that the space between plates at the upper part of the electrode plate is enlarged and the space between plates at the lower part of the electrode plate is reduced by processing the traditional rectangular structure into the step structure, so that the current density at the upper, medium and lower parts of the electrode plate tends to be on the same level, thus the graphite electrode plate has the advantages of low corrosion weight loss, high obtained specific volume and power consumption reduction during low-pressure aluminium foil electrocorrosion; and compared with other methods, the graphite electrode plate has the characteristic of simplicity and convenience in processing and installation.
Description
Technical field
The utility model relates to a kind of aluminium electrolutic capacitor, is specifically related to a kind of graphite electrode plate that is used for aluminium foil corrosion.
Background technology
The aluminium electrolutic capacitor low-voltage aluminium foil corrosion is high purity (〉=99.98%) aluminium foil at strong acid (generally based on hydrochloric acid) corrosive liquid, under the electric field action that graphite electrode plate forms electrochemical reaction takes place, make two surfaces of aluminium foil form the microscopic appearance of " cavernous body ", obtain the maximized effect of surface-area.The maximized effect of surface-area specific volume (unit: uF/cm
2) represent that the big more effect of specific volume is good more.The graphite electrode plate that present manufacturing low-voltage aluminium foil corrosion is used all is a rectangular configuration, forms " U " shape as shown in Figure 3.It has characteristics such as simple in structure, easy for installation, practical durable, but obviously has the difference of the current density of upper, middle and lower, can cause corrosion weight loss to corrode the not high phenomenon of specific volume greatly.In the electrical corrosion of conventional graphite electrode plate structure, since as the graphite resistance rate of electrode much larger than metal, thereby cause that the distribution of corrosion electric current density on battery lead plate presents the trend of successively decreasing with the degree of depth of corrosive liquid, cause liquid level part (being top) bigger, can influence the specific volume and the weightlessness of corrosive aluminum foil with the current density difference of battery lead plate base section (being the bottom).
A kind of novel graphite pole plate that is used to make corrosive aluminum foil is disclosed in utility model patent ZL01259960.3, it is that bottom with graphite limit battery lead plate shown in Figure 1 couples together with graphite again, all be under the electric field action when making aluminium foil interlock corrosion, avoid the influence of pure chemistry corrosion specific volume.Inhomogeneity improvement is " an arrow at the end of its flight--a spent force " but this method is to the current density upper, middle and lower, acts on very little.
A kind of combination graphite electrode plate that is used for aluminum foil corrosion of capacitor is disclosed in utility model patent ZL00223665.6, it combines by electrode layer graphite, auxiliary graphite electrode plate, dielectric spacer layer and graphite web member, can effectively the current density of upper, middle and lower evenly be got up.But there is the problem that combination is complicated, installation is heavy, power consumption increases in it, especially the graphite web member in corrosive liquid very easily produces the graphite granule disengaging owing to current concentration, cause contact resistance to increase, power consumption constantly rises, corrosive liquid cooling difficulty, be restricted work-ing life.
The utility model content
The purpose of this utility model is to provide that a kind of can not only to make graphite electrode plate reach the upper, middle and lower corrosion electric current density more even, but also simplifies the structure, and has the energy-saving and cost-reducing graphite electrode plate that is used for aluminium foil corrosion.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of graphite electrode plate that is used for aluminium foil corrosion, include left Graphite Electrodes, right Graphite Electrodes and middle Graphite Electrodes, wherein, the spacing between described middle Graphite Electrodes and the left and right sides Graphite Electrodes is changed from small to big from top to bottom; The two sides of Graphite Electrodes are terraced structure in described.
The above-mentioned graphite electrode plate that is used for aluminium foil corrosion, the power supply that provides of described left Graphite Electrodes, right Graphite Electrodes and middle Graphite Electrodes is a low-voltage AC.
The beneficial effects of the utility model are: owing to be used for the graphite electrode plate of aluminium foil corrosion, be processed into trapezoidal or terraced structure by traditional rectangular configuration, promptly strengthen the distance between plates on battery lead plate top, the distance between plates of dwindling the battery lead plate bottom, make the current density of upper, middle and lower of battery lead plate be tending towards identical level, thereby when the low-voltage aluminium foil electrocorrosion, have corrosion weight loss few, obtain specific volume height and the advantage of saving power consumption.Other method of the utility model comparison also has processing and easy-to-install characteristics.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is a structural representation of the present utility model;
The structural representation of the graphite electrode plate that Fig. 2 uses for traditional low-voltage aluminium foil corrosion.
Among the figure: 1, left Graphite Electrodes; 2, middle Graphite Electrodes; 3, aluminium foil; 4, right Graphite Electrodes.
Embodiment
As shown in Figure 1 and Figure 2, a kind of graphite electrode plate that is used for aluminium foil corrosion includes left Graphite Electrodes 1, right Graphite Electrodes 4 and middle Graphite Electrodes 2, and the spacing between middle Graphite Electrodes 2 and the left and right sides Graphite Electrodes is changed from small to big from top to bottom; The two sides of Graphite Electrodes 2 are terraced structure in described; The power supply that provides of left side Graphite Electrodes 1, right Graphite Electrodes 4 and middle Graphite Electrodes 2 is a low-voltage AC.
Principle of work: form the corrosion electric field at parallel battery lead plate, it is the bottom than having Duoed the conduction resistance of battery lead plate in top that the current density of bottom is wanted little reason.We know that the specific conductivity of graphite is tens of times of corrosive liquid, and the length of graphite electrode plate also is tens of times relation of battery lead plate spacing, is in the identical order of magnitude, can be by adjusting the impedance that the battery lead plate spacing remedies the long distance conduction of graphite.The panel that graphite electrode plate is participated in transmission of electricity is processed into trapezoidal, forms battery lead plate gap ratio bottom wide on top.Like this, the graphite cake resistance of conduction current is manyed than top in the bottom, and the corrosive liquid resistance of spacing width is manyed than the bottom in top, and both numerical value is approaching, so the current density of battery lead plate upper, middle and lower part is tending towards even.
The parameter comparison of the battery lead plate of the utility model and traditional parallel construction, the battery lead plate of traditional parallel construction (as Fig. 2 as showing), the corrosion liquid level lower electrode plate degree of depth is 180cm, the spacing of battery lead plate is 10cm.Battery lead plate of the present utility model (as shown in Figure 2), battery lead plate is processed into step, under the condition of identical corrosive liquid, 35 ℃ of uniform temps, identical alternating-current 2000A, act on 3 minutes, the aluminium foil that light paper tinsel and the burn into intermediate treatment of having layouted are crossed is done checking.Get that 10cm place aluminium foil is the top print under the liquid level, get that place's aluminium foil is the middle part print in the middle of the liquid level lower electrode plate, power taking pole plate bottom upwards 20cm place is the bottom print, and when 20Vfe, the detection data of two kinds of structure electrode plates contrast, and are as shown in table 1:
Table 1
From the detection data of above-mentioned table 1 to recently analyzing, the graphite electrode plate of terraced structure of the present utility model can reach upper, middle and lower corrosion electric current density effect of uniform, can see that also the magnitude of voltage on the graphite electrode plate decreases, this is because in comparative example, the current density of upper position is bigger, the resistance of electrochemical reaction rises greatlyyer, and it is higher to demonstrate magnitude of voltage, so, the utility model is compared with the battery lead plate of traditional parallel construction, has energy-saving and cost-reducing effect.
Claims (2)
1. graphite electrode plate that is used for aluminium foil corrosion, include left Graphite Electrodes (1), right Graphite Electrodes (4) and middle Graphite Electrodes (2), it is characterized in that: the spacing in described between Graphite Electrodes (2) and the left and right sides Graphite Electrodes is changed from small to big from top to bottom; The two sides of Graphite Electrodes (2) are terraced structure in described.
2. the graphite electrode plate that is used for aluminium foil corrosion according to claim 1 is characterized in that: the power supply that provides of described left Graphite Electrodes (1), right Graphite Electrodes (4) and middle Graphite Electrodes (2) is a low-voltage AC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320094525 CN203096221U (en) | 2013-03-02 | 2013-03-02 | Graphite electrode plate for aluminium foil corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320094525 CN203096221U (en) | 2013-03-02 | 2013-03-02 | Graphite electrode plate for aluminium foil corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203096221U true CN203096221U (en) | 2013-07-31 |
Family
ID=48847639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320094525 Expired - Fee Related CN203096221U (en) | 2013-03-02 | 2013-03-02 | Graphite electrode plate for aluminium foil corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203096221U (en) |
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2013
- 2013-03-02 CN CN 201320094525 patent/CN203096221U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20140302 |