CN101760755B - Manufacturing method of cathode mesh bag in cathode box body of diaphragm electrolytic cell - Google Patents
Manufacturing method of cathode mesh bag in cathode box body of diaphragm electrolytic cell Download PDFInfo
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- CN101760755B CN101760755B CN2008100441920A CN200810044192A CN101760755B CN 101760755 B CN101760755 B CN 101760755B CN 2008100441920 A CN2008100441920 A CN 2008100441920A CN 200810044192 A CN200810044192 A CN 200810044192A CN 101760755 B CN101760755 B CN 101760755B
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- mesh bag
- cathode
- welding
- grid plate
- conductive grid
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Abstract
The invention relates to a manufacturing method of a cathode mesh bag in a cathode box body of a diaphragm electrolytic cell, which is characterized by comprising the following steps of: firstly welding and assembling a conductive grid plate or a supporting framework into a frame and leveling into the mesh bag side surface, the welding making a protruding part of the conductive grid plate or the supporting block to weld together with an iron mesh bag; folding the mesh bag with welded half surface and the mesh bag with unwelded half surface and putting on an assembling and shaping die carrier and pressing, connecting the unwelded half surface mesh bag with the protruding part of the conductive grid plate or the supporting block by using electric welding rods; finishing the welding point number of the mesh bag, taking out the mesh bag after the mesh bag is cool. The novel welding method of the cathode mesh bag and the conductive grid plate or the supporting framework, which is provided by the invention, not only enhances the joint strength of the cathode mesh bag and the conductive grid plate or the supporting framework but also has favorable planeness of the mesh bag. When in use, cell voltage is lower than the cell voltage of the traditional diaphragm electrolytic cell, thereby prolonging the serviceable life of the cathode mesh bag of the electrolytic cell.
Description
Technical field
The present invention relates to a kind of making method of cathode mesh bag in cathode box body of diaphragm electrolytic cell.
Background technology
The MA cell diaphragm cell with metal anodes of using in China's chlorine industry belongs to the acyclic type electrolyzer, and characteristics are for negative electrode, so multi-disc negative electrode mesh bag is arranged in the negative electrode casing for anode.Plane specification of quality regulation concave-convex surface to mesh bag in the industry is not more than 1mm, and roughness is less than 1/1000, and purpose is in order in use to make distribution of current even.Inhomogeneous when distribution of current, current density is high more in the part, and overpotential is just high more, thereby cause bath voltage to rise, power consumption increases, and the local loss of anode is accelerated, more serious as situation when the expanding anode, finally shortened anode usage period of electrolyzer.The making major part of the diaphragm sell negative electrode mesh bag that uses in chlor-alkali industry at present is to adopt the resistance welding making method, and mainly have the problem of following three aspects: there is pit on (1) mesh bag plane, and reason is that resistance welding causes; (2) after the negative electrode mesh bag is made, also to install to and carry out the electric welding assembling in the cathode box, cause the mesh bag thermal distortion, this just needs the negative electrode mesh bag to carry out plane rectification in casing, can cause part resistance welding sealing-off like this, cause conduction bad, can cause that in use bath voltage rises; (3) because the resistance welding strength problem, in use, make the sealing-off of net and conductive grid plate, so electric tank cathode casing use 3-5 will change the negative electrode mesh bag because membranous absorption repeatedly causes mesh bag is impacted, shortened the usage period of electric tank cathode mesh bag.
Summary of the invention
The objective of the invention is to overcome the defective of existing electric tank cathode mesh bag resistance welding, a kind of making method of cathode mesh bag in cathode box body of diaphragm electrolytic cell is provided, change the welding process of cathode screen and conductive grid plate or support frame, improve the strength of joint of negative electrode mesh bag and conductive grid plate or support frame, and have good mesh bag planeness.
For achieving the above object, the present invention can be achieved through the following technical solutions:
A kind of making method of cathode mesh bag in cathode box body of diaphragm electrolytic cell is characterized in that, may further comprise the steps:
Step 1: leveling is put into the mesh bag side after earlier conductive grid plate or support frame welding being assembled into framework, with carbon dioxide-shielded welding or electric welding, makes conductive grid plate bossing or back-up block and iron wire mesh bag welded together.
Step 2: the mesh bag that demifacet is welded folds with the demifacet mesh bag of not weldering, puts into then on the assembling typing mould bases to compress, and the demifacet mesh bag that will not weld with welding electrode is connected with conductive grid plate bossing or back-up block.
Step 3: in the middle of the mesh bag electric welding weldering less than the position, can on the typing mould bases, hold welding hole successfully, weld.
Step 4: after finishing mesh bag weld sum, treat just can from mould bases, take out after the mesh bag cooling.
Owing to adopted technique scheme, the new cathode screen provided by the invention and the welding process of conductive grid plate or support frame, not only improve the strength of joint of negative electrode mesh bag and conductive grid plate or support frame, and has good mesh bag planeness, bath voltage is all low than the diaphragm sell bath voltage that existing electricity consumption solder-resisting manufacturing methods is made in use, thereby has prolonged the usage period of electric tank cathode mesh bag.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is a process flow sheet of the present invention.
Embodiment
In order to make technique means of the present invention, creation characteristic, to reach purpose and effect is easy to understand,, further set forth the present invention, but embodiments of the present invention are not limited thereto below in conjunction with embodiment.
Embodiment 1
As shown in Figure 1, earlier conductive grid plate or support frame are welded into framework with the conduction square steel, and correct, put into the mesh bag single side face behind the leveling, weld, make conductive grid plate bossing or back-up block and iron wire mesh bag welded together with the welding electrode of diameter 2.5mm.Do not fold up with the single side face mesh bag that is welded with conductive grid plate welding the single side face mesh bag, put into assembling typing mould bases and compress, the demifacet mesh bag that will not weld with welding electrode is connected with the conductive grid plate bossing.In the middle of the mesh bag electric welding weldering less than the position, can on the typing mould bases, hold welding hole successfully, weld.After finishing mesh bag weld sum, treat just can from mould bases, take out after the mesh bag cooling.
6 diaphragm sells that manufacturing obtains use in chemical industry for making chlorine and alkali factory, and when current density was every square metre of 1600A, its bath voltage was respectively between the 2.98-3.12V, and the electricity consumption solder-resisting manufacturing methods, under same current density, bath voltage is at 3.05-3.23V.
Embodiment 2
As shown in Figure 1, manufacture method is identical substantially with embodiment 1, only is that welding process adopts carbon dioxide-shielded welding to connect.
6 diaphragm sells that manufacturing obtains use in chemical industry for making chlorine and alkali factory, and when current density was every square metre of 1600A, its bath voltage was respectively between the 2.86-3.05V, and the electricity consumption solder-resisting manufacturing methods, under same current density, bath voltage is at 3.05-3.23V.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the making method of a cathode mesh bag in cathode box body of diaphragm electrolytic cell is characterized in that, may further comprise the steps:
Leveling was put into the mesh bag side after the welding of conductive grid plate or support frame was assembled into framework, and welding makes conductive grid plate bossing or back-up block and iron wire mesh bag welded together; The mesh bag that demifacet is welded folds with the demifacet mesh bag of not weldering, puts into then on the assembling typing mould bases to compress, and demifacet mesh bag and the conductive grid plate bossing or the back-up block of not weldering welded; After finishing mesh bag weld sum, treat from mould bases, to take out after the mesh bag cooling.
2. the making method of a kind of cathode mesh bag in cathode box body of diaphragm electrolytic cell as claimed in claim 1 is characterized in that, described welding process is carbon dioxide-shielded welding or electric welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100441920A CN101760755B (en) | 2008-12-25 | 2008-12-25 | Manufacturing method of cathode mesh bag in cathode box body of diaphragm electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100441920A CN101760755B (en) | 2008-12-25 | 2008-12-25 | Manufacturing method of cathode mesh bag in cathode box body of diaphragm electrolytic cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101760755A CN101760755A (en) | 2010-06-30 |
| CN101760755B true CN101760755B (en) | 2011-08-03 |
Family
ID=42492127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100441920A Expired - Fee Related CN101760755B (en) | 2008-12-25 | 2008-12-25 | Manufacturing method of cathode mesh bag in cathode box body of diaphragm electrolytic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101760755B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088357A (en) * | 2012-12-13 | 2013-05-08 | 苏州新区化工节能设备厂 | Diaphragm electrolytic cell cathode compartment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254894Y (en) * | 1996-01-09 | 1997-05-28 | 阜新市化工设备厂 | Expanded anode electrolytic cell |
| CN1407138A (en) * | 2001-09-06 | 2003-04-02 | 北京化工机械厂 | Activated cathode diaphragm electrolyzer with metal anodes |
| CN1441085A (en) * | 2003-04-02 | 2003-09-10 | 徐文新 | Welding method for cathode netted bag of electrolyzer |
-
2008
- 2008-12-25 CN CN2008100441920A patent/CN101760755B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254894Y (en) * | 1996-01-09 | 1997-05-28 | 阜新市化工设备厂 | Expanded anode electrolytic cell |
| CN1407138A (en) * | 2001-09-06 | 2003-04-02 | 北京化工机械厂 | Activated cathode diaphragm electrolyzer with metal anodes |
| CN1441085A (en) * | 2003-04-02 | 2003-09-10 | 徐文新 | Welding method for cathode netted bag of electrolyzer |
Non-Patent Citations (1)
| Title |
|---|
| 尼振宗.浅谈MDC-55型电解槽阴极箱的修复.《氯碱工业》.1996,(第12期),15-20. * |
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| CN101760755A (en) | 2010-06-30 |
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Granted publication date: 20110803 Termination date: 20171225 |