CN101463492B - Variable resistance type shunt method and apparatus - Google Patents
Variable resistance type shunt method and apparatus Download PDFInfo
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- CN101463492B CN101463492B CN2007102032191A CN200710203219A CN101463492B CN 101463492 B CN101463492 B CN 101463492B CN 2007102032191 A CN2007102032191 A CN 2007102032191A CN 200710203219 A CN200710203219 A CN 200710203219A CN 101463492 B CN101463492 B CN 101463492B
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Abstract
The invention discloses a variable resistance type shunt method and a device thereof. The method is that one or more than one soft belts made of materials with positive temperature coefficients are used for connecting an upright post and a short circuit block in parallel; when the soft belts are just switched in, the temperature of the soft belts is low and the resistance of the soft belt is low, the action of the soft belt works on the electric current shunt gradually reduces; as time goes on, the temperature of the soft belt gradually rises under the action of the electric current heat effect, and the resistance of the soft belt also increases, the action of the soft belt on the electric current shunt decreases gradually; therefore, the soft belts play a role in automatic regulating shunt current. In the process of opening an electrolytic bath, when a switch is cut momentarily, the device can momentarily share 50% or more than 50% power switch breaking current and effectively reduces the momentary shocking of the power switch breaking current on the electrolytic bath. The invention also can avoid the generation of intense arc when the connection of the upright post and the short circuit block is cut, increases the service life of a rectifier unit and the electrolytic bath. The invention has simple manufacture, easy installation, and is in line with operation habit of aluminum manufactures.
Description
Technical field
The present invention relates to a kind of variable resistance type shunt method and device that is used for aluminium cell, belong to the direct current supply technical field of Aluminum Electrolysis Production.
Background technology
In the production of electrolytic aluminum, many electrolyzers are as being to be connected after the series connection on the direct supply of low-voltage and high-current with electrical load.As everyone knows, when series circuit occurred opening circuit when one of them load, other load also can not be worked because of outage.Because the particular requirement of pot line, what needs were regular stops groove overhaul with one or more electrolyzer, and in order not influence the works better of other electrolyzer, design has short-circuit busbar in parallel in the feed circuit of every electrolyzer when certain electrolyzer stops groove.Short-circuit busbar is realized current switching by the closed and disconnected of column and short-circuit block.Because the power supply of electrolyzer is the direct supply that adopts low-voltage and high-current, in the process of the closed and disconnected of column and short-circuit block, understands the very high electric arc of generate energy even blast.Abnormally dangerous during operation, may cause damage or operator are caused personal injury power-supply unit.
Usually the traditional method of realizing current switching has two kinds: a kind of is that the supply current of electrolyzer is reduced to zero, by artificial closure or disconnection short circuit mouth, cries the zero current operation; Another kind is after the supply current of electrolyzer is reduced to 1/2 or 1/3 electric current of primary current, to be used splitter or fusible cut-out, by artificial closure or disconnection short circuit mouth, cries and falls current practice again.More than two kinds of methods all have following shortcoming: 1, the closure or the opening operation time of general short-circuit block are 15～30 minutes, operating period is connected on electrolyzer in the circuit all at no current or fall current status work, can cause the fluctuation of groove condition behind the electric current recovery electricity, frequent like this fluctuation of current and and groove in the fluctuation of temperature can greatly influence life-span of cell lining, shorten the liner life cycle, even cause the electrolyzer generation bakie accident in the whole series loop; 2, in general the current consumption of electrolyzer is very large, the power load in the suitable medium-sized city of electrolyzer power consumption in series loop sometimes, big load like this, have a power failure continually and switch on very unfavorable to the steady running of electrical network; Also can have a strong impact on the rectifier unit life-span into electrolyzer with electricity; The cost that the energy waste of the cell lining life consumption that causes owing to above reason, the fluctuation of groove condition and rectifier unit life consumption have directly influenced Aluminum Electrolysis Production.
In order to solve above shortcoming, we have worked out the method for stopping groove and fluting under the electrolyzer live state, though this method has solved the above-mentioned shortcoming that electrolyzer occurs in the whole series loop, but for the electrolyzer that after overhaul, needs to slot, run into following problem again: the electrolyzer after the overhaul, when inserting series loop, electrolyzer need make it the temperature that reaches certain to the cell body preheating, electrolyzer preheating initial stage electrolytic cell currents progressively rises, for example once reaching rated current will produce enormous impact to cell body, influence cell life.
Summary of the invention
The object of the present invention is to provide a kind of variable resistance type shunt method and device, this method and device can prevent that electrolyzer from once reaching rated current and avoiding cell body is impacted when the fluting of electrolyzer.
The present invention is achieved in that variable resistance type shunt method of the present invention is that this method is that one or one or more in parallel have the soft band that the electro-conductive material of positive temperature coefficient is made between the column of aluminium cell and short-circuit block; When soft band just had been connected in parallel between column and the short-circuit block, because the temperature of soft band is low, the resistance of soft band is little, and was big to the shunting action of electric current; As time goes on, soft band is under the heat effect effect of electric current, and temperature raises gradually, and the resistance of soft band also increases gradually, the shunting action of electric current is reduced gradually, thereby play the effect of automatic adjustment partial current.
In the above-mentioned variable resistance type shunt method, the cross section of described soft band and quantity in parallel during by the aluminium cell preheating required partial current and aluminium cell reach the required time of rated current distribution occasion and determine; To reach the required time of rated current long for the big or aluminium cell of required partial current during the aluminium cell preheating, and the cross section of soft band is also corresponding big or increase the quantity of soft band parallel connection; Otherwise to reach the required time of rated current short for the little or aluminium cell of required partial current during the aluminium cell preheating, and the cross section of soft band is also corresponding little or reduce soft band quantity in parallel.
In the aforesaid variable resistance type shunt method, described soft band is made with steel or copper product.
In the aforesaid variable resistance type shunt method, on the column of described soft band and column coupling end the column connector presser is installed; The short-circuit block connector presser is installed on the circuit-breaker of soft band and short-circuit block coupling end, is convenient to quick connection.
In the aforesaid variable resistance type shunt method, described soft band two ends are crimped with briquetting, and briquetting is made with copper or aluminium.
Variable resistance type shunt device according to aforesaid variable resistance type shunt method structure, it comprises that one or one or more can be connected in parallel on the column of aluminium cell and the soft band (1) between the short-circuit block, all be crimped with briquetting (2) at the two ends of every soft band (1), wherein the briquetting of an end (2) is connected with the column connector presser (3) that can be fixed on the aluminum electrolytic cell riser, and the briquetting of the other end (2) is connected with the short-circuit block connector presser (4) that can be connected on the aluminum electrolytic cell riser.
In the aforesaid variable resistance type shunt device, described column connector presser 3 is made of clamping plate 5 and flow deflector 6; The cross-sectional shape of clamping plate 5 is for falling " F " shape, and the two ends of clamping plate 5 are provided with open holes 7, and the middle part of clamping plate 5 is provided with one or more clip slot 8, and clip slot 8 is provided with thrust screw 9, has plate hole 10 in the clip slot 8; Flow deflector 6 be shaped as " L " shape, at " L " one side shape have one or more than one grooves 11, one side at the one or more pressing plate 12 of forming of flow deflector 6, pressing plate 12 is through in the plate hole 10.
In the aforesaid variable resistance type shunt device, described short-circuit block connector presser 4 is made of short-circuit block anchor clamps 13 and water conservancy diversion angle section 14; Water conservancy diversion angle section 14 be shaped as " L " shape, one side of " L " shape and 13 welding of short-circuit block anchor clamps, the other side of " L " shape is provided with and the corresponding splitter 15 of clip slot 8 quantity, splitter 15 is provided with threaded hole 16; Short-circuit block anchor clamps 13 be shaped as down " door " font, short-circuit block anchor clamps 13 are provided with threaded hole 16.
Compared with prior art, the present invention works as switch-off instant in grooving process, but moment share the switch breaking current more than 50% or 50%, effectively reduce the moment impact of switch breaking current to electrolyzer, after grooving operations was finished, miscellaneous equipment was dismountable.The initial fractional flow of the present invention can be controlled between 30%～50% by demand, along with the through-flow time increases, soft band temperature increases, fractional flow reduces gradually, when fractional flow is reduced to 10%～20%, can be progressively with its dismounting, generally beginning is progressively removed after through-flow 6～12 hours, thereby reaches the purpose that control current progressively feeds electrolyzer; The present invention also can avoid producing intensive electric arc when the disconnection column is connected with short-circuit block.The present invention also can directly use as traditional splitter, dismantles the splitter group safely, piecewise, easily, and control current progressively feeds electrolyzer; Can before fluting, not have a power failure, do not tear open under the situation of short-circuit block bolt and install; The present invention makes simply, and is easy for installation, meets the operating habit of aluminium manufacturer; Can use multiple mounting means according to practical situation.
Description of drawings
Accompanying drawing 1 is a method synoptic diagram of the present invention;
Accompanying drawing 2 is structural representations of the present invention;
Accompanying drawing 3 is synoptic diagram of middle clamp plate of the present invention;
Accompanying drawing 4 is synoptic diagram of flow deflector among the present invention;
Accompanying drawing 5 is example schematic of the vertical two-sided installation of the present invention.
The soft band of being labeled as in the accompanying drawing: 1-, 2-briquetting, 3-column connector presser, 4-short-circuit block connector presser, 5-clamping plate, 6-flow deflector, the 7-open holes, 8-clip slot, 9-thrust screw, the 10-plate hole, 11-groove, 12-pressing plate, 13-short-circuit block anchor clamps, 14-water conservancy diversion angle section, 15-splitter, the 16-threaded hole, 17-column, 18-short-circuit block.
Embodiment
Embodiments of the invention: variable resistance type shunt method of the present invention as shown in Figure 1, this method is to have the soft band that the material of positive temperature coefficient makes with one or one or more to be connected in parallel between column and short-circuit block; Soft available steel or the copper product be with made.The temperature that rigidly connects fashionable soft band is low, and the resistance of soft band is little, and is big to the shunting action of electric current; As time goes on, soft band is under the heat effect effect of electric current, and temperature raises gradually, and the resistance of soft band also increases gradually, and the shunting action of electric current is reduced gradually; Play the effect of automatic adjustment partial current.The cross section of described soft band and quantity in parallel during by electrobath start required partial current and electrolyzer reach the required time of rated current and determine; To reach the required time of rated current long for the big or electrolyzer of required partial current during the electrolyzer preheating, and the cross section of soft band is also corresponding big or increase the quantity of soft band parallel connection; Otherwise to reach the required time of rated current short for the little or electrolyzer of required partial current during the electrolyzer preheating, and the cross section of soft band is also corresponding little or reduce soft band quantity in parallel.For the ease of quick connection, on the column of soft band and column coupling end, the column connector presser is installed; The short-circuit block connector presser is installed on the circuit-breaker of soft band and short-circuit block coupling end.
According to the variable resistance type shunt device of aforesaid variable resistance type shunt method structure, as shown in Figure 2.It comprises that many soft be with 1, and soft two ends with 1 are crimped with briquetting 2, and briquetting is made with copper or aluminium.Soft briquetting 2 with an end is connected with column connector presser 3, and the briquetting 2 of the soft band the other end is connected with short-circuit block connector presser 4.Described column connector presser 3 is made of clamping plate 5 and flow deflector 6; The cross-sectional shape of clamping plate 5 is for falling " F " shape, as shown in Figure 3.The two ends of clamping plate 5 are provided with open holes 7, and the middle part of clamping plate 5 is provided with one or more clip slot 8, and clip slot 8 is provided with thrust screw 9, has plate hole 10 in the clip slot 8; Flow deflector as shown in Figure 4, flow deflector 6 be shaped as " L " shape, at " L " one side shape have one or more than one grooves 11, one side at the one or more pressing plate 12 of forming of flow deflector 6, pressing plate 12 is through in the plate hole 10.Described short-circuit block connector presser 4 is made of short-circuit block anchor clamps 13 and water conservancy diversion angle section 14; Water conservancy diversion angle section 14 be shaped as " L " shape, one side of " L " shape and 13 welding of short-circuit block anchor clamps, the other side of " L " shape is provided with and the corresponding splitter 15 of clip slot 8 quantity, splitter 15 is provided with threaded hole 16; Short-circuit block anchor clamps 13 be shaped as down " door " font, short-circuit block anchor clamps 13 are provided with threaded hole 16.
When concrete the use, the present invention can install and use in vertical side of column, as shown in Figure 1; Also can install and use, as shown in Figure 5 in vertical both sides of column; Can also install and use in the horizontal one or both sides of column.
Claims (7)
1. variable resistance type shunt method is characterized in that: this method is that one or one or more in parallel have the soft band that the electro-conductive material of positive temperature coefficient is made between the column of aluminium cell and short-circuit block; When soft band just had been connected in parallel between column and the short-circuit block, because the temperature of soft band is low, the resistance of soft band is little, and was big to the shunting action of electric current; As time goes on, soft band is under the heat effect effect of electric current, and temperature raises gradually, and the resistance of soft band also increases gradually, the shunting action of electric current is reduced gradually, thereby play the effect of automatic adjustment partial current; The cross section of described soft band and quantity in parallel during by the aluminium cell preheating required partial current and aluminium cell reach the required time of rated current distribution occasion and determine; To reach the required time of rated current temperature distribution condition long for the big or aluminium cell of required partial current during the aluminium cell preheating, and the cross section of soft band is also corresponding big or increase the quantity of soft band parallel connection; Otherwise to reach the required time of predetermined temperature profile condition short for the little or aluminium cell of required partial current during the aluminium cell preheating, and the cross section of soft band is also corresponding little or reduce soft band quantity in parallel.
2. variable resistance type shunt method according to claim 1 is characterized in that: described soft band is made with steel or copper product.
3. variable resistance type shunt method according to claim 2 is characterized in that: on the column of described soft band and column coupling end the column connector presser is installed; The short-circuit block connector presser is installed on the circuit-breaker of soft band and short-circuit block coupling end, is convenient to quick connection.
4. variable resistance type shunt method according to claim 3 is characterized in that: described soft band two ends are crimped with briquetting, and briquetting is made with copper or aluminium.
5. variable resistance type shunt device that makes up according to the described variable resistance type shunt method of the arbitrary claim of claim 1 to 4, it is characterized in that: it comprises that one or one or more can be connected in parallel on the column of aluminium cell and the soft band (1) between the short-circuit block, all be crimped with briquetting (2) at the two ends of every soft band (1), wherein the briquetting of an end (2) is connected with the column connector presser (3) that can be fixed on the aluminum electrolytic cell riser, and the briquetting of the other end (2) is connected with the short-circuit block connector presser (4) that can be connected on the aluminum electrolytic cell riser.
6. variable resistance type shunt device according to claim 5 is characterized in that: described column connector presser (3) is made of clamping plate (5) and flow deflector (6); The cross-sectional shape of clamping plate (5) is for falling " F " shape, and the two ends of clamping plate (5) are provided with open holes (7), and the middle part of clamping plate (5) is provided with one or more clip slot (8), and clip slot (8) is provided with thrust screw (9), has plate hole (10) in the clip slot (8); Flow deflector (6) be shaped as " L " shape, at " L " shape have one or more than one grooves (11), at flow deflector (6) and meanwhile form one or more pressing plate (12), pressing plate (12) is through in the plate hole (10).
7. variable resistance type shunt device according to claim 5 is characterized in that: described short-circuit block connector presser (4) is made of short-circuit block anchor clamps (13) and water conservancy diversion angle section (14); Water conservancy diversion angle section (14) be shaped as " L " shape, one side of " L " shape and short-circuit block anchor clamps (13) welding, the other side of " L " shape is provided with and the corresponding splitter of clip slot (8) quantity (15), splitter (15) is provided with threaded hole (16); Short-circuit block anchor clamps (13) be shaped as down " door " font, short-circuit block anchor clamps (13) are provided with threaded hole (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007102032191A CN101463492B (en) | 2007-12-19 | 2007-12-19 | Variable resistance type shunt method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102032191A CN101463492B (en) | 2007-12-19 | 2007-12-19 | Variable resistance type shunt method and apparatus |
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| CN101463492A CN101463492A (en) | 2009-06-24 |
| CN101463492B true CN101463492B (en) | 2011-03-16 |
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| CN2007102032191A Active CN101463492B (en) | 2007-12-19 | 2007-12-19 | Variable resistance type shunt method and apparatus |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619467B (en) * | 2008-07-04 | 2011-04-27 | 河南中孚实业股份有限公司 | Aluminium electrolytic bath cathode current online adjustment method and device thereof |
| CN104514015B (en) * | 2013-09-30 | 2017-07-25 | 贵阳铝镁设计研究院有限公司 | A kind of aluminium cell preheating device in parallel and method |
| CN104005053A (en) * | 2014-04-29 | 2014-08-27 | 中国铝业股份有限公司 | Apparatus for realizing anode current diversion during aluminum electrolysis cell baking |
Citations (5)
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|---|---|---|---|---|
| US6482048B1 (en) * | 1995-03-13 | 2002-11-19 | Square D Company | Automated assembly methods for miniature circuit breakers with wire attachment clamps |
| CN1772958A (en) * | 2004-11-11 | 2006-05-17 | 梁学民 | Apparatus and method for aluminium electrolysing series uninterruption Stop (opening) electrolytic tank |
| CN1924108A (en) * | 2006-08-04 | 2007-03-07 | 郑州中实赛尔科技有限公司 | Aluminum electrolytic cell current transfer method and apparatus thereof |
| CN200974869Y (en) * | 2006-11-08 | 2007-11-14 | 茌平华信铝业有限公司 | Aluminum cell power-on grooving diverter |
| CN201154993Y (en) * | 2007-12-19 | 2008-11-26 | 贵阳铝镁设计研究院 | Variable resistance type shunt apparatus |
-
2007
- 2007-12-19 CN CN2007102032191A patent/CN101463492B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6482048B1 (en) * | 1995-03-13 | 2002-11-19 | Square D Company | Automated assembly methods for miniature circuit breakers with wire attachment clamps |
| CN1772958A (en) * | 2004-11-11 | 2006-05-17 | 梁学民 | Apparatus and method for aluminium electrolysing series uninterruption Stop (opening) electrolytic tank |
| CN1924108A (en) * | 2006-08-04 | 2007-03-07 | 郑州中实赛尔科技有限公司 | Aluminum electrolytic cell current transfer method and apparatus thereof |
| CN200974869Y (en) * | 2006-11-08 | 2007-11-14 | 茌平华信铝业有限公司 | Aluminum cell power-on grooving diverter |
| CN201154993Y (en) * | 2007-12-19 | 2008-11-26 | 贵阳铝镁设计研究院 | Variable resistance type shunt apparatus |
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| CN101463492A (en) | 2009-06-24 |
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Owner name: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INSTITUTE C Free format text: FORMER OWNER: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. Effective date: 20110525 |
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Effective date of registration: 20110525 Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Patentee after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Patentee before: Guiyang Aluminium and Magnesium Design Inst. |