CN109487296B - Flexible bridging board for connecting conductive columns - Google Patents
Flexible bridging board for connecting conductive columns Download PDFInfo
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- CN109487296B CN109487296B CN201811368702.XA CN201811368702A CN109487296B CN 109487296 B CN109487296 B CN 109487296B CN 201811368702 A CN201811368702 A CN 201811368702A CN 109487296 B CN109487296 B CN 109487296B
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- bridging plate
- flexible bridging
- flexible
- carbon anode
- plate
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- 229910052799 carbon Inorganic materials 0.000 claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims 1
- 239000004020 conductor Substances 0.000 claims 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 11
- 239000011737 fluorine Substances 0.000 description 11
- 229910052731 fluorine Inorganic materials 0.000 description 11
- 238000005452 bending Methods 0.000 description 6
- 150000004673 fluoride salts Chemical class 0.000 description 5
- 229910000640 Fe alloy Inorganic materials 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 2
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 2
- -1 copper-aluminum-iron Chemical compound 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/245—Fluorine; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention relates to a flexible bridging plate for connecting conductive columns, which is arranged between the conductive columns and a carbon anode in pairs, the upper surface and the lower surface of the flexible bridging plate are respectively connected with the conductive columns and the carbon anode, and the middle of the flexible bridging plate is a semicircular arc inwards. Compared with the prior art, the invention changes rigid connection into elastic connection, improves the stress condition, reduces the influence of fatigue stress on the anode plate and prolongs the service life of the anode plate.
Description
Technical Field
The invention relates to the field of fluorine preparation, in particular to a flexible bridging plate for connecting a conductive column.
Background
Fluorine gas is an important chemical raw material, and has active chemical properties, difficult storage and difficult preparation. The electrolytic preparation of fluoride salts is currently considered to be the most economical and reasonable process.
In the fluorine-making electrolytic cylinder, the bridging plate is arranged between the carbon anode and the conductive column. Two ends of the carbon anode are respectively connected with the conductive column by bolts and nuts. After the power is switched on, the current forms a loop through the conductive column, the bridging plate, the carbon anode, the fluoride salt and the cathode of the fluorine-making electrolytic cylinder. Under the action of the current, the fluoride salt is electrolyzed to generate hydrogen on the cathode and fluorine on the anode. Therefore, the bridging plate is one of the important parts directly participating in the electrolytic reaction in the electrolytic fluorine production cylinder.
The commonly used bridging plate structure is two parallel copper plates with the thickness of 5-6 mm, and the two parallel copper plates are respectively fixed on the conductive column and the carbon anode by bolts and nuts. The conductive column is rigidly connected with the carbon anode, and the contact resistance of the conductive column is directly influenced by the strength of force applied to the bolt. In order to reduce the contact resistance, large torques (approximately 80N · m) are often applied to the bolts, nuts or are locked.
When the cell is operated, a large number of fluorine bubbles are generated at the anode, and the larger the current is, the more bubbles are, the more violent the degree of boiling of the fluoride salt is, and the larger the lateral force applied to the carbon anode is. Therefore, the carbon anode is prone to premature fatigue failure (fracture) under the action of lateral alternating stress, and fracture lines are mostly concentrated on the bolt fixing parts of the copper plate and the carbon anode. The service life of the carbon anode is mostly only 30 to 60 days, so the cost of fluorine gas production is always high.
Disclosure of Invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art by providing a flexible bridging plate for connecting conductive posts.
The purpose of the invention can be realized by the following technical scheme:
the flexible bridging plate is installed between the conductive column and the carbon anode in pairs and located on two sides of the conductive column, the upper surface and the lower surface of the flexible bridging plate are respectively connected with the conductive column and the carbon anode, for example, the flexible bridging plate can be connected with the conductive column and the carbon anode through connecting members such as bolts and rivets, the middle of the flexible bridging plate is a semicircular arc which is recessed inwards, and then the conductive column is isolated from the carbon anode.
The depth of the inward concave semi-circular arc is 1/8-1/2 of the thickness of the carbon anode, and the virtual circle center of the inward concave semi-circular arc is outside the bridging plate, specifically, in order to increase the deformation, the bending part of the bridging plate is U-shaped instead of semi-circular, so the circle center of the U-shaped bottom arc is not in the same plane with the non-bending part of the bridging plate, and the virtual circle center of the semi-circular arc is outside the bridging plate.
The thickness of the flexible bridging plate is 1mm-4mm, and when the thickness of the flexible bridging plate is less than 3mm, an auxiliary flexible lead can be added or not added on the outer side of the flexible bridging plate, so that the current normally passes through the flexible bridging plate without overheating when the flexible bridging plate works normally.
And two ends of the auxiliary flexible lead are respectively connected to the connecting bolts which are connected with the conductive columns and the carbon anodes on the upper surface and the lower surface of the flexible bridging plate.
The flexible bridging plate is made of copper or copper alloy, and can be made of copper-aluminum alloy, copper-iron alloy, copper-aluminum-iron alloy and the like.
Compared with the prior art, the invention has the following advantages:
1. the invention changes rigid connection into elastic connection, improves the stress condition, reduces the influence of fatigue stress on the carbon anode and prolongs the service life of the carbon anode.
2. The invention has simple structure, convenient processing and convenient batch processing.
3. The invention is reliably installed between the conductive column and the carbon anode.
Drawings
FIG. 1 is a schematic front view of the present invention in embodiment 1;
FIG. 2 is a schematic side view showing the structure of the present invention in use in example 1;
FIG. 3 is a schematic diagram of the present invention in operation;
FIG. 4 is a schematic structural view of the present invention in example 2;
fig. 5 is a schematic front view of a conventional bridge plate in use;
fig. 6 is a schematic side view of a conventional bridge plate in use.
In the figure, 1-flexible bridging plate, 2-conductive column, 3-carbon anode, 4-auxiliary flexible wire, 5-existing bridging plate, 6-broken line.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The structure of the flexible bridging plate 1 for connecting the conductive columns is shown in the figures 1-2, and the flexible bridging plate can be made of copper or copper alloy, such as copper-aluminum alloy, copper-iron alloy, copper-aluminum-iron alloy and the like. Flexible bridging board 1 is installed in pairs and is led between electrical pillar 2 and the carbon anode 3, is located the both sides that lead electrical pillar 2, and the upper and lower face of flexible bridging board 1 is connected with leading electrical pillar 2 and carbon anode 3 respectively through the bolt, and the centre of flexible bridging board 1 is the semicircle of inside concave yield, and then keeps apart and lead electrical pillar 2 and carbon anode 3 contact. The depth of the inward concave semi-circular arc is 1/8-1/2 of the thickness of the carbon anode, and the virtual center of the inward concave semi-circular arc is outside the bridging plate. As shown in figure 2, in order to increase the deformation, the bent part of the bridging plate is U-shaped instead of semi-circular, so the circle center of the circular arc at the bottom of the U-shaped is not in the same plane with the non-bent part of the bridging plate, and the virtual circle center of the semi-circular arc is outside the bridging plate)
The flexible bridging plate 1, the conductive column and the carbon anode are combined into an elastic connection structure. When the carbon anode is subjected to an external force (a lateral force P generated by boiling fluorine bubbles), an angular displacement Delta theta is generated between the carbon anode and the conductive column. Fluorine bubbles are generated on both sides of the carbon anode, and the number of fluorine bubbles generated on both sides is asymmetrical. The generated angular displacement Δ θ varies with the magnitude of the lateral force P generated by the boiling fluorine bubbles. Since the change of Δ θ is small, within the elastic deformation of the bridging plate, the carbon anode swings left and right on the conductive column by a small amplitude, so as to eliminate or reduce the influence of the alternating stress caused by the bending moment generated by the external force on the carbon anode, as shown in fig. 3.
Practice proves that when the thickness (1 mm-4 mm) of the bridging plate is small, the more the center of the semicircular arc is close to the center, the larger the angle delta theta is, and the more obvious the effect of eliminating bending stress is. On the contrary, when the thickness of the bridge plate is large, the angle delta theta is smaller as the center of the bending circle of the corrugation is farther away from the center, and the effect of eliminating bending stress is weakened. The thickness of the bridging plate is preferably 1mm to 4 mm. The thickness of the flexible bridge plate in this embodiment is 4 mm. In order to prevent the working of the electrolytic cylinder from being influenced by overlarge angle delta theta, ensure the minimum interelectrode distance and leave a margin, the size of the arc radius, the distance between the circle centers of two radii and the thickness of the metal plate can be adjusted according to the working condition.
Example 2
A flexible bridging plate 1 for connecting a conductive column is shown in figure 4, and the structure is substantially the same as that of embodiment 1, except that the thickness of the flexible bridging plate 1 in the embodiment is 1mm, because the thickness is less than 3mm, an auxiliary flexible lead 4 is added according to the requirement of electrical regulations, and two ends of the auxiliary flexible lead 4 are respectively connected to connecting bolts connected with the conductive column and a carbon anode on the upper surface and the lower surface of the flexible bridging plate, so that current normally passes through the flexible bridging plate without overheating the flexible bridging plate.
Comparative example
The conventional bridge plate 5 is applied as shown in fig. 5-6, and two parallel copper plates are used and fixed on the conductive column 2 and the carbon anode 3 by bolts and nuts, respectively. The conductive column 2 is rigidly connected with the carbon anode 3, and the contact resistance of the conductive column is directly influenced by the strength of the force applied to the bolt. In order to reduce the contact resistance, large torques (approximately 80N · m) are often applied to the bolts, nuts or are locked.
When the cell is operated, a large number of fluorine bubbles are generated at the anode, and the larger the current is, the more bubbles are, the more violent the degree of boiling of the fluoride salt is, and the larger the lateral force applied to the carbon anode is. Therefore, the carbon anode is prone to premature fatigue failure (fracture) under the action of lateral alternating stress, and the fracture lines 6 are mostly concentrated on the bolt fixing parts of the copper plate and the carbon anode. The service life of the carbon anode is mostly only 30 to 60 days.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A flexible bridging board used for connecting a conductive column is characterized in that the flexible bridging board is installed between the conductive column and a carbon anode in pairs, the upper surface and the lower surface of the flexible bridging board are respectively connected with the conductive column and the carbon anode, and the middle of the flexible bridging board is a semicircular arc inwards concave;
the flexible bridging plate is arranged on two sides of the conductive column;
the virtual circle center of the inward concave semicircular arc is positioned on the outer side of the bridging plate;
the flexible bridging plate is made of copper or copper alloy material.
2. A flexible bridging plate for connecting conductive posts as claimed in claim 1 wherein the depth of said inwardly concave semi-arc is 1/8-1/2 the thickness of said carbon anode.
3. A flexible bridging plate for connecting conductive posts as claimed in claim 1, wherein the thickness of the flexible bridging plate is 1mm to 4 mm.
4. A flexible bridging plate for connecting conductive posts as claimed in claim 1, wherein the thickness of the flexible bridging plate is 1mm to 3 mm.
5. A flexible bridging plate for connecting conductive posts as claimed in claim 1, wherein the flexible bridging plate is provided with auxiliary flexible conductors on its outer side.
6. A flexible bridging plate for connecting a conductive post according to claim 5 wherein the two ends of said auxiliary flexible conductive wire are connected to the connecting bolts connecting the conductive post and the carbon anode respectively on the upper and lower surfaces of the flexible bridging plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368702.XA CN109487296B (en) | 2018-11-16 | 2018-11-16 | Flexible bridging board for connecting conductive columns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368702.XA CN109487296B (en) | 2018-11-16 | 2018-11-16 | Flexible bridging board for connecting conductive columns |
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| Publication Number | Publication Date |
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| CN109487296A CN109487296A (en) | 2019-03-19 |
| CN109487296B true CN109487296B (en) | 2021-03-16 |
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| CN201811368702.XA Active CN109487296B (en) | 2018-11-16 | 2018-11-16 | Flexible bridging board for connecting conductive columns |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4185737A4 (en) * | 2020-09-08 | 2024-10-23 | Versum Materials US, LLC | Electrode attachment assembly, cell and method of use |
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-
2018
- 2018-11-16 CN CN201811368702.XA patent/CN109487296B/en active Active
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