U.S. patent application number 16/458123 was filed with the patent office on 2020-12-31 for electrolytic cell cathode with zero polar spacing.
This patent application is currently assigned to JIANGSU ANCAN TECHNOLOGY CO., LTD.. The applicant listed for this patent is JIANGSU ANCAN TECHNOLOGY CO., LTD.. Invention is credited to Qi Liu, Hong Tang, Wenxin Xu, Guohua YANG.
Application Number | 20200407862 16/458123 |
Document ID | / |
Family ID | 1000004218227 |
Filed Date | 2020-12-31 |
United States Patent
Application |
20200407862 |
Kind Code |
A1 |
YANG; Guohua ; et
al. |
December 31, 2020 |
ELECTROLYTIC CELL CATHODE WITH ZERO POLAR SPACING
Abstract
The invention provides an electrolytic cell cathode with zero
polar spacing, which comprises a conductive column; a cathode net
connected to the conductive column; an elastic net covering the
cathode net; a surface net covering the elastic net; a fastening
part penetrating through the surface net, the cathode net and the
elastic net and is fixed on the conductive column. According to the
electrolytic cell cathode provided by the invention, in the using
process, the elastic cathode is uniformly attached to the ionic
membrane, so that the shaking of the ionic membrane is reduced in
the using process, and the service life of the ionic membrane can
be greatly prolonged. The elastic net with special structure can
effectively prevent the elastic change caused by pressure
fluctuation and keep the polar spacing relatively stable. In the
process of discharging gas, bubbles can be broken and the
resistance inside the electric tank can be reduced. The elasticity
of the elastic net is better and more durable, and the current
density is uniform.
Inventors: |
YANG; Guohua; (Jiangyin,
CN) ; Tang; Hong; (Jiangyin, CN) ; Xu;
Wenxin; (Jiangyin, CN) ; Liu; Qi; (Jiangyin,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
JIANGSU ANCAN TECHNOLOGY CO., LTD. |
Jiangyin |
|
CN |
|
|
Assignee: |
JIANGSU ANCAN TECHNOLOGY CO.,
LTD.
|
Family ID: |
1000004218227 |
Appl. No.: |
16/458123 |
Filed: |
June 30, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C25B 13/02 20130101 |
International
Class: |
C25B 13/02 20060101
C25B013/02 |
Claims
1: An electrolytic cell cathode with zero polar spacing,
comprising: a conductive column; a cathode net connected to the
conductive column; an elastic net covering the cathode net; a
surface net covering the elastic net; and a fastening part
penetrating through the surface net, the cathode net and the
elastic net and fixed on the conductive column.
2: The electrolytic cell cathode with zero polar spacing according
to claim 1, characterized in that said fastening part comprises: a
nickel spacing part, wherein nickel spacing part is provided with a
plurality of fixing holes; a spacing pin penetrating through the
fixing hole and fixed on the nickel spacing part through the fixing
holes; and a spacing cap connected to the spacing pin and covering
part of the surface net.
3: The cathode of the electrolytic cell with zero polar spacing
according to claim 2, characterized in that the spacing pin and the
spacing cap are made of nonmetallic materials with high temperature
resistance and corrosion resistance.
4: The electrolytic cell cathode with zero polar spacing according
to claim 1, characterized in that the electrolytic cell cathode
with zero polar spacing further comprises a support rib plate, one
end of which is connected with a cathode plate, and the other end
of which is connected with the cathode net for supporting the
cathode net.
5: The electrolytic cell cathode with zero polar spacing according
to claim 4, characterized in that the support rib plate is
L-shaped.
6: The cathode of an electrolytic cell with zero polar spacing
according to claim 4, characterized in that the material of the
surface net is nickel.
7: The cathode of the electrolytic cell with zero polar spacing
according to claim 4, characterized in that the elastic net is of a
wavy structure.
8: The electrolytic cell cathode with zero polar spacing according
to claim 2, characterized in that the electrolytic cell cathode
with zero polar spacing further comprises a support rib plate, one
end of which is connected with a cathode plate, and the other end
of which is connected with the cathode net for supporting the
cathode net.
9: The electrolytic cell cathode with zero polar spacing according
to claim 3, characterized in that the electrolytic cell cathode
with zero polar spacing further comprises a support rib plate, one
end of which is connected with a cathode plate, and the other end
of which is connected with the cathode net for supporting the
cathode net.
Description
TECHNICAL FIELD
[0001] The present invention relates to an electrolytic cell, in
particular to an electrolytic cell cathode with zero polar spacing
or gap.
BACKGROUND ART
[0002] There are 128 elastic four-claws distributed on the cathode
plate of an electrolytic cell to support the pole net, and the
four-claws are welded to the pole net. The center of the elastic
claw is provided with a pit or depression for hold a cylindrical
pin with a PFA cap. During operation, under the action of 32
mandrels, the cathode plate and anode plate are tightly attached
back to back, and the cathode plate bottom contacts the composite
conductive block on the anode plate, and then electrical current is
conducted in the electrolytic cell. The cathode cylindrical pin and
anode cylindrical pin in the plate correspondingly press against
the ionic membrane, and the cathode net and anode net also tightly
press against the ionic membrane after being pressed.
[0003] However, for the existing electrolytic cell, after being
used for a period of time, the position of the pole net at the
cross conductive claw will be sunken when being subjected to force,
which may result in an uneven net surface, thus the cell voltage is
generally high. The ionic membranes are vulnerable to damage due to
the pulling of extrusion force and the unevenness of polar
network.
SUMMARY OF THE INVENTION
[0004] The object of the present invention is to overcome the above
disadvantage or at least partially solve or alleviate the above
disadvantages.
[0005] In one aspect, the present invention provides an
electrolytic cell cathode with zero polar spacing or gap comprising
a conductive column, a cathode net connected to the conductive
column, an elastic net covering the cathode net, a surface net
covering the elastic net; a fixing or fastening part penetrating
through the surface net, the cathode net and the elastic net and is
fixed on the conductive column.
[0006] Optionally, the fixing or fastening part comprises a nickel
spacing part, a spacing pin and a spacing cap, wherein the nickel
spacing part is provided with a fixing hole; the spacing pin
penetrating through the fixing hole and fixed with the nickel
spacing part through the fixing hole and the spacing cap is
connected with the spacing pin and covers part of the surface
net.
[0007] Optionally, the materials of the spacing pin and the spacing
cap are nonmetallic materials with high temperature resistance and
corrosion resistance.
[0008] Optionally, the cathode of the electrolytic cell with zero
polar spacing further comprises a support rib plate of which one
end is connected with a cathode disc, and the other end is
connected with the cathode net for supporting the cathode net.
[0009] Optionally, the support rib plate is L-shaped.
[0010] Optionally, the net is made from nickel.
[0011] Optionally, the elastic net is a wave-typed structure.
[0012] During the use of the electrolytic cell cathode provided by
the invention, the elastic cathode is uniformly attached to the
ionic membrane and reducing the shaking of the ionic membrane in
the using process, and then the service life of the ionic membrane
can be greatly prolonged. The elastic net with special structure
can effectively prevent the elastic change caused by pressure
fluctuation and keep the polar spacing relatively stable. In the
process of discharging gas, bubbles can be broken and the
resistance inside the electric tank can be reduced; the elasticity
of the elastic net is better and more durable, and the current
density is uniform.
[0013] The specific embodiments of the invention will be detailed
described in conjunction with the following drawings, and the above
and other purposes, advantages and features of the present
invention will become more apparent to those skilled in the
art.
BRIEF DESCRIPTION OF DRAWINGS
[0014] Some specific embodiments of the present invention will be
described in detail hereinafter by way of the drawings, but not the
limiting examples with reference to the drawings. The same
reference numerals in the drawings may designate the same or
similar components or parts. The skilled in the art should
appreciate that the drawings are not necessarily drawn to scale. In
the drawings:
[0015] FIG. 1 is a schematic diagram of the cathode film electrode
spacing coating structure of an embodiment of the present
invention;
[0016] FIG. 2 is a schematic structural diagram of the nickel
spacing and spacing cap;
[0017] FIG. 3 is a schematic structural diagram of the spacing
pin.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0018] The zero polar spacing technology for cathode is adopted in
the electrolytic cells in order to solve the disadvantages of
common higher voltage of the electrolytic cell, the reduced life of
ionic membrane due to the pulling damage caused by extrusion force.
In view of the above problems, this new invention proposes a zero
polar spacing technology, aiming at improving electrolytic
production efficiency and effectively reducing energy consumption.
The specific technical scheme is as follows:
[0019] Referring to FIG. 1, in one embodiment of the present
invention, the cathode of the electrolytic cell with zero polar
spacing comprises a conductive column, a cathode net, an elastic
net, a surface net, and a fastening part; wherein the cathode net
is connected with the conductive column, the elastic net is covered
on the cathode net, the surface net is covered on the elastic net,
and a fastening part penetrating through the surface net, the
cathode net and the elastic net and is fixed on the conductive
column.
[0020] Referring to FIGS. 2-3 in one embodiment of the present
invention; the fixing part comprises a nickel spacing pin, a
spacing pin and a spacing cap. The fixing holes are arranged at
fixed intervals for medium nickel. The spacing pin penetrates
through the fixing hole and is fixed to the nickel spacing part
through the fixing hole. A spacing cap is connected with the
spacing pin and covers a part of the surface net.
[0021] In one embodiment of the invention, the spacing pin and the
spacing cap are made from the nonmetallic materials which are high
temperature resistant and corrosion resistant.
[0022] In one embodiment of the present invention, the cathode of
the electrolytic cell with zero polar spacing or gap further
comprises a support rib plate of which one end of which is
connected with a cathode disc, and the other end is connected with
the cathode net for supporting the cathode net. In this embodiment,
the support rib plate is L-shaped (as shown by the L support in
FIG. 1), but is not limited thereto.
[0023] In one embodiment of the present invention, the face net is
made from nickel.
[0024] In one embodiment of the present invention, the elastic net
is of a wavy structure.
[0025] According to the present invention, the cathode of the
electrolytic cell is reformed in membrane electrode spacing, and an
elastic net and a surface net are added, so that the height of the
cathode electrode net needs to be adjusted. At the same time, in
order to increase the strength of the bottom net and improve the
compression resistance, an L-shaped support rib plate is added to
the cathode. According to the calculated results, the supporting
objects that meet the requirements are made of nickel.
[0026] The structure of the locating pin has been adjusted after
modifying the cathode film pole, and the original locating pin
(FEP+ nickel column) structure is no longer suitable for use. The
original locating pin is made of FEP+ nickel column. When the
temperature reaches to 90.degree. C., the FEP will creep and cannot
transmit force well. Therefore, the locating pin is now made of a
material with higher temperature resistance and corrosion
resistance. After the positioning pin with the current structure is
adopted, the elastic net does not need to be welded on the pole net
when the elastic net is coated, thus avoiding phenomena of wire
breakage and the like during welding.
[0027] An elastic net is added to the cathode electrode net. The
elastic net is made of nickel. The elastic net is superior in
material and large in compression. The wave-shaped elastic net is
conducive to the discharge of gas and fully cutting bubbles during
the discharge process. The elastic net structure can reduce the
vibration of the ionic membrane and prolong the service life of the
membrane.
[0028] The surface net for cathode is made of special nickel wire.
It has good toughness and strength, smooth and soft surface, and
then will not damage ionic membrane.
[0029] The coating method of cathode film electrode spacing is as
follows, the elastic net and the surface net are fixed by the
spacing pins made of high temperature resistant and corrosion
resistant materials, and fixed by coating the periphery. In the use
process, the elastic cathode uniformly clings to the ionic
membrane, so that may reduce the shaking of the ionic membrane in
the use process, and greatly prolong the service life of the ionic
membrane. The elastic net with special structure can effectively
prevent the elastic change caused by pressure fluctuation and keep
the polar spacing relatively stable. In the process of discharging
gas, bubbles can be broken and the resistance inside the electric
tank can be reduced. Then elastic net may acquire better and more
durable elasticity, and the uniform current density.
[0030] After the electrolytic cell was reformed to zero polar
spacing, the cell voltage significantly decreased.
[0031] The membrane breakage rate of an electric tank in one
membrane cycle (about 4 years) before the renovation is at least 10
sheets, and no membrane breakage phenomenon presents after the
renovation.
[0032] The distances L1, L2, L3 and L4 may be measured according to
the formula of
La=L1+L2-L3-L4-Lb,
and then the height of the required support may be calculated
according to the relevant standards of the electrolytic cell: Note:
La means the height of L-shape support rib plate;
[0033] Lb means the clearance between rib plate and pole net;
[0034] L2 means the height of adjusting cathode grid; L3 means the
height of pole net;
[0035] L1 means the height of conductive column; L4 means the
height of cathode plate.
[0036] The above description is only a preferred embodiment of the
present invention and shouldn't limit the scope of protection of
the present invention. Any changes or substitutions that can easily
occur to those skilled in the art within the technical scope
disclosed in the present invention should be covered within the
scope of protection of the present invention. Therefore, the scope
of protection of this invention should be determined according to
the claims.
* * * * *