CN201169634Y - Aluminum electrolysis series non-power off aluminum cell link mechanism short circuit device - Google Patents
Aluminum electrolysis series non-power off aluminum cell link mechanism short circuit device Download PDFInfo
- Publication number
- CN201169634Y CN201169634Y CNU2007202003264U CN200720200326U CN201169634Y CN 201169634 Y CN201169634 Y CN 201169634Y CN U2007202003264 U CNU2007202003264 U CN U2007202003264U CN 200720200326 U CN200720200326 U CN 200720200326U CN 201169634 Y CN201169634 Y CN 201169634Y
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- aluminium cell
- time
- circuit block
- short
- normally open
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Abstract
The utility model discloses an aluminium cell connecting bar mechanism short circuit device which is non-powercut in the aluminium electrolysis series. The device is provided with a blast switch connected between a vertical post busbar of the aluminium cell and a short circuit block, the action of the short circuit block and the blast switch consists of a four bar linkage mechanism for driving the short circuit block to act, a driving device for driving the four bar linkage mechanism to move, an electromagnet for driving the blast switch to act, and an electrical appliance control cabinet, and electrical appliance elements for controlling the driving device and the electromagnet are arranged inside the appliance control cabinet. The aluminium cell connecting bar mechanism short circuit device can prevent the aluminium cell series from having blackout and prolongs the service life of the aluminium cell. The short circuit block and the blast switch of the aluminium cell are connected with an electrical appliance control linkage device so that the on-off and the fit of the short circuit block and the blast switch are completed by the four bar linkage mechanism and the appliance driving device, thereby increasing the maintenance or the changing speed of the aluminium cell and ensuring that the blackout short circuit operation of the aluminium is more easier and saves more labor and time.
Description
Technical field
The utility model relates to the aluminium cell linkage assembly short circuiting device that a kind of electrolysis series that uses when being used for the aluminium cell that needs repairing had a power failure or not, and belongs to the aluminium electrolytic bath short circuit power cut technical field.
Background technology
In the Aluminum Electrolysis Production process, aluminium cell reaches and just need stop groove behind certain time limit and carry out large repairs, will be to the short-circuit block branch road before the overhaul the current conversion on the need overhaul aluminium cell, the promptly closed former short-circuit block that is in open mode, make the electric current on the former aluminium cell of flowing through directly enter next aluminium cell, realize the groove that stops of aluminium cell by the short-circuit block circuit.Aluminium cell will promptly be opened the short-circuit block that is in closure state after the overhaul the current transfer on the short-circuit block circuit of flowing through to aluminium cell.Because potline voltage height, electric current are big, the method for estimated current conversion is after aluminium cell has a power failure or reduces electric current significantly, the short-circuit block in the aluminum cell bus-bar is opened or is closed, and that realizes aluminium cell stops groove or fluting.Because electrolysis series is to have tens of and even hundreds of aluminium cells to be in series, every year is all tens of or up to a hundred of overhauls irregularly, if take to have a power failure or reduce the mode of electric current significantly, also can produce following serial problem.
(1) electrical network is impacted greatly.For pursuing scale and benefit, current electrolysis series all maximizes and the serial large-scale development towards grooved, the serial power load of loading even reaching a medium-sized city, and so big load variations is very unfavorable to operation of power networks.
(2) influence the potline rectifier unit.For overhaul stops the groove operation, having a power failure continually and switching on to influence the rectifier unit life-span.
(3) influence the aluminium cell production management.The short-circuit block opening and closing operations time was generally 15～30 minutes, operating period complete series aluminium cell noenergy income, cause the fluctuation of groove condition after the energising, bring certain difficulty to production management.In addition, frequent rush of current and thermal shocking meeting greatly influence the internal lining of aluminium electrolytic bath life-span, shorten the liner life cycle, even cause sick groove generation bakie accident in the potline.
(4) influence the potline economic target.Influence mainly comprises three aspects to production cost: the internal lining of aluminium electrolytic bath life consumption; The energy waste of groove condition fluctuation; The rectifier unit life consumption.
Simultaneously because the electric current on the aluminum cell bus-bar is very big, adopts traditional disconnect short-circuit block or close time of spending with short-circuit block by hand by hand about 15 ~ 20 minutes, this way is not only time-consuming, and easily human body is damaged.
The utility model content
The purpose of this utility model is: the aluminium cell linkage assembly short circuiting device that provides a kind of simple in structure, easy to use, time saving and energy saving electrolysis series not have a power failure makes and can avoid potline to have a power failure when keeping in repair and changing bad groove, and can prolong aluminium
Pot line life-span and support equipment life-span, thus the loss of aluminium cell reduced because of having a power failure, stopping work and caused, to overcome the deficiencies in the prior art.
The technical solution of the utility model; The aluminium cell linkage assembly short circuiting device that a kind of potline does not have a power failure, it comprises riser bus bar (2) and the short-circuit block (3) that is installed on the aluminium cell (1), short-circuit block (3) is installed on the riser bus bar (2), and an end of short-circuit block (3) is connected with the riser bus bar (2) of next aluminium cell (1) by bus bar, between the other end of short-circuit block (3) and riser bus bar (2), be lined with dismountable insulation spacer (5), between the riser bus bar (2) of aluminium cell (1) and short-circuit block (3), also be connected with an arc-suppressing switch (4) that only has a cease spark cover and pair of contact, be connected with four-bar mechanism (9) on the short-circuit block (3), the first connecting rod (9-1) of four-bar mechanism (9) is connected with short-circuit block (3), second connecting rod (9-2) and the 4th connecting rod (9-4) are connected with support (10) on being fixed on electrolyzer (1) by steady brace, and on four-bar mechanism (9), also be connected with drive unit (6) that drives four-bar mechanism (9) action and electro-magnet (7) and the electric control cabinet (8) that drives arc-suppressing switch (4) action, one end of drive unit (6) is connected with four-bar mechanism (7), its the other end is connected with support (10) on being fixed on aluminium cell (1), is provided with the electric elements of accessory drive (6) and electro-magnet (7) in electric control cabinet (8).
Drive unit (6) is drive magnetic, driving cylinder or hydraulic ram.
Drive unit (6) is connected with the 4th connecting rod (9-4).
Electric elements in the electric control cabinet (8) comprise close push button (A), cut-off push button (B), start electromagnetic relay (Y
1), close electromagnetic relay (Y
2), the time closing time relay (Y
3), the time-delay turn-off time rly. (Y
4), the driving solenoid (X of drive unit (6)
1) and the arc extinguishing of electro-magnet (7) drive solenoid (Y); Start electromagnetic relay (Y
1) and the time closing time relay (Y
3) coils from parallel connection of coils after connect with the normally closed interlock of the normally open contact of close push button (A), cut-off push button (B) and to constitute the loop, and start electromagnetic relay (Y
1) energising keep normally open contact (Y
1-1) in parallel with the normally open contact of close push button (A); Close electromagnetic relay (Y
2) and time-delay rly. (Y turn-off time
4) coils from parallel connection of coils after connect with the normally closed interlock of the normally open contact of close push button (A), cut-off push button (B) and to constitute the loop, and close electromagnetic relay (Y
2) close and keep normally open contact (Y
2-1) in parallel with the normally open contact of cut-off push button (B); Driving solenoid (the X of drive unit (6)
1) back in parallel and startup electromagnetic relay (Y
1) connection normally open contact (Y
1-3) and the time closing time relay (Y
3) time closing normally open contact (Y
3-1) series connection formation loop; The arc extinguishing of electro-magnet (7) drives solenoid (Y) and time-delay rly. (Y turn-off time
4) time-delay disconnect normally closed contact (Y
4-1) and start electromagnetic relay (Y
1) startup normally open contact (Y
1-2) series connection formation loop, and starting electromagnetic relay (Y
1) startup normally open contact (Y
1-2) go up parallel connection and close electromagnetic relay (Y
2) close normally open contact (Y
2-2).
Electric elements in the electric control cabinet (8) also comprise switch (K), and switch (K) is connected with the arc extinguishing solenoid (Y) of electro-magnet (7).
Compared with the prior art, the utility model is finished the fluting of aluminium cell and is stopped groove by the mode that the mode that will have aluminium cell primary current conversion now is converted to the conversion of electric current secondary, can not cut off the power supply or reduce maintenance or the replacement of finishing under the situation of electric current aluminium cell significantly like this.Can avoid aluminium cell in outage or when reducing the electric current maintenance, to the impact of electrical network with to the damage of rectifier unit.And the utility model is simple in structure, easy for installation, can avoid the series aluminum electrolyzer all to have a power failure, and can prolong the potline life-span, greatly reduce potline causes damage because of the institute that has a power failure, stops work; And on the short-circuit block of aluminium cell and arc-suppressing switch, be connected four-bar mechanism and electrical equipment drive unit, make opening, close and cooperate and to finish by four-bar mechanism and electrical equipment drive unit of short-circuit block and arc-suppressing switch, so not only be convenient to operation, but also improved the stability of short circuit power cut operation element.Because what the utility model adopted is the arc-suppressing switch that only has a cease spark cover and pair of contact, thereby not only greatly reduce the cost of manufacture of arc-suppressing switch, but also reduced the volume of arc-suppressing switch greatly, the power failure short circuit work of aluminium cell is more prone to and more laborsaving saving time.Therefore the utlity model has excellent popularization is worth and economic worth.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be utility model the electrical equipment control synoptic diagram.
Embodiment
Embodiment of the present utility model: as depicted in figs. 1 and 2, in potline, the mutual electrical connection of each aluminium cell 1 is to adopt the mode of series circuit to connect, normally the cell body with aluminium cell 1 is a negative electrode, riser bus bar 2 is an anode, by being connected the cell body formation current path of the charcoal piece that is placed on the riser bus bar 2 in the aluminium cell 1 and aluminium cell 1.For making things convenient for the maintenance of aluminium cell 1, short-circuit block 3 is installed on the riser bus bar on the aluminium cell 12, and an end of short-circuit block 3 is connected with the riser bus bar 2 of next aluminium cell 1 by bus bar, is lined with dismountable insulation spacer 5 between the other end of short-circuit block 3 and riser bus bar 2.The electric current that the connection of short-circuit block 3 can be keeped in repair need on the aluminium cell is shorted to next aluminium cell 1 by short-circuit block 3, because of the electric current on the riser bus bar 2 very big, at present when connecting and disconnect riser bus bar 2 and short-circuit block 3, all need the outage of whole potline or reduce electric current significantly, there are many drawbacks in this way.For make aluminium cell 1 when stopping the groove short circuit power cut or maintenance finish when energising back fluting, need not or reduce electric current significantly to whole potline outage, can adopt the utility model to operate, promptly when the 3 pairs of aluminium cells 1 of short-circuit block that adopt aluminium cell 1 stop the groove short circuit power cut, the first arc-suppressing switch 4 that only has a cease spark cover and pair of contact of a disconnection in parallel connection on the short-circuit block 3 of this aluminium cell 1 and the riser bus bar 2, arc-suppressing switch 4 is connected on riser bus bar 2 and the short-circuit block 3 by connecting electric wire and joint bolt, for difference opening time that aluminium cell 1 arc-suppressing switch 4 closures and short-circuit block 3 when stopping the groove short circuit power cut are connected with riser bus bar 2 was controlled at 0.1～1.5 second, or when the energising of aluminium cell 1 maintenance finishing fluting, short-circuit block 3 was controlled at 0.1～1.5 second with the interlock time difference that riser bus bar 2 disconnects and arc-suppressing switch 4 disconnects again.Can on short-circuit block 3, connect a four-bar mechanism 9,
The first connecting rod 9-1 of this four-bar mechanism 9 is connected with short-circuit block 3, second connecting rod 9-2 and the 4th connecting rod 9-4 are connected with support 10 on being fixed on electrolyzer 1 by steady brace, and on four-bar mechanism 9, connect the drive unit 6 that can drive four-bar mechanism 9 actions, on arc-suppressing switch 4, connect the electro-magnet 7 that can drive arc-suppressing switch 4 actions, now the end with drive unit 6 is connected with the 4th connecting rod 94 of four-bar mechanism 9, its the other end is connected with support 10 on being fixed on aluminium cell 1, is provided with the electric elements of accessory drive 6 and electro-magnet 7 in electric control cabinet 8.Can directly adopt drive magnetic of the prior art, driving cylinder or hydraulic ram as drive unit 6, the electric elements that are installed in the electric control cabinet 8 comprise close push button A, cut-off push button B, start electromagnetic relay Y
1, close electromagnetic relay Y
2, the time-delay close and time relay Y
3, the time-delay turn-off time rly. Y
4, drive unit 6 driving solenoid X
1Drive solenoid Y with the arc extinguishing of electro-magnet 7; Start electromagnetic relay Y
1With time closing time relay Y
3Coils from parallel connection of coils after connect with the normally closed interlock of the normally open contact of close push button A, cut-off push button B and to constitute the loop, and start electromagnetic relay Y
1Energising keep normally open contact Y
1-1In parallel with the normally open contact of close push button A; Close electromagnetic relay Y
2With time-delay rly. Y turn-off time
4Coils from parallel connection of coils after connect with the normally closed interlock of the normally open contact of close push button A, cut-off push button B and to constitute the loop, and close electromagnetic relay Y
2Close and keep normally open contact Y
2-1In parallel with the normally open contact of cut-off push button B; The driving solenoid X of drive unit 6
1With startup electromagnetic relay Y
1Connection normally open contact Y
1-3Close and time relay Y with time-delay
3Time closing normally open contact Y
3-1Series connection constitutes the loop; The arc extinguishing of electro-magnet 7 drives solenoid Y and time-delay rly. Y turn-off time
41 time-delay disconnect normally closed contact Y
4-1, manual switch K and start electromagnetic relay Y
1Startup normally open contact Y
1-2Series connection constitutes the loop, and is starting electromagnetic relay Y
1Startup normally open contact Y
1-2Electromagnetic relay Y is closed in last parallel connection
2Close normally open contact Y
2-2
After connecting the drive unit 6 that drives four-bar mechanism 9 actions and driving the electro-magnet 7 and electric control cabinet 8 of arc-suppressing switch 4 actions, the nut that connects riser bus bar 2 and short-circuit block 3 is unclamped, extract insulation spacer 5 out, the carbon piece that is connected on the riser bus bar 2 is dropped in the aluminium water, the voltage of aluminium cell 1 is reduced to below the 2000mv, finish above-mentioned aluminium cell 1 after the preparation work of stopping the groove short circuit power cut, K switch is closed, press close push button A, start electromagnetic relay Y
1Close and time relay Y with time-delay
3Solenoid energising, start electromagnetic relay Y
1Energising keep normally open contact Y
1-1, start normally open contact Y
1-2With connection normally open contact Y
1-3Closure, time closing time relay Y
3Time closing normally open contact Y
3-1Rly. Y between time closing is regulated in time closing
3The retarded closing time be 0.1～1.5 second, like this, when pressing close push button A, the arc extinguishing of electro-magnet 7 drives solenoid Y energising, the telescopic head of electro-magnet 7 drives arc-suppressing switch 4 closures, time closing normally open contact Y after 0.1～1.5 second
3-1Closure, the driving solenoid X of the solenoid of the electro-magnet of drive unit 6 or cylinder oil cylinder magnetic valve
1Energising, make drive unit 6 drive four-bar mechanism 9 motions, the moving line of four-bar mechanism 9 is shown in Fig. 1 hollow arrow direction, four-bar mechanism 9 promotes short-circuit block 3 and is connected with riser bus bar 2, by manual short-circuit block 3 and riser bus bar 2 usefulness bolts are connected and fixed then, can make the electric current on the riser bus bar 2 that needs maintenance aluminium cell 1 flow into next aluminium cell 1 like this from arc-suppressing switch 4 and short-circuit block 3; Also can be after short-circuit block 3 and riser bus bar 2 connect, manual unlocking K switch again makes the solenoid of electro-magnet 7
Outage, arc-suppressing switch 4 disconnections, the electric current on the riser bus bar 2 only flows into the riser bus bar 2 of next aluminium cell 1 from short-circuit block 3, and so both can finish needs the groove short circuit power cut that stops of maintenance aluminium cell to operate.When this aluminium cell 1 maintenance finishing need fluting energising, be in place driving the drive unit 6 of four-bar mechanism 9 actions and the electro-magnet 7 and the electric control cabinet 8 of driving arc-suppressing switch 4 actions, close K switch, press close push button A, the arc extinguishing of electro-magnet 7 drives solenoid Y energising, the telescopic head of electro-magnet 7 drives arc-suppressing switch 4 closures, time closing normally open contact Y after 0.1～1.5 second
3-1Closure, the driving solenoid X of the solenoid of the electro-magnet of drive unit 6 or cylinder oil cylinder magnetic valve
1Energising is unclamped by the bolt that manually will connect riser bus bar 2 and short-circuit block 3, presses cut-off push button B, starts electromagnetic relay Y
1With time closing time relay Y
3Solenoid outage, start electromagnetic relay Y
1Energising keep normally open contact Y
1-1, start normally open contact Y
1-2With connection normally open contact Y
1-3Disconnect time closing time relay Y
3Time closing normally open contact Y
3-1Disconnect, close electromagnetic relay Y
2With time-delay rly. Y turn-off time
4Solenoid energising, close electromagnetic relay Y
2Close and keep normally open contact Y
2-1With close normally open contact Y
2-2Closure, time-delay rly. Y turn-off time
4Time-delay disconnect normally closed contact Y
4-1Time-delay disconnects.As the solenoid of the electro-magnet of drive unit 6 or the driving solenoid X of cylinder oil cylinder magnetic valve
1Outage, drive unit 6 drive four-bar mechanism 9 motions under the effect of its returning place force, the direction of motion of four-bar mechanism 9 is shown in Fig. 1 filled arrows, and four-bar mechanism 9 drives short-circuit block 3 and disconnects with riser bus bar 2, regulates time-delay rly. Y turn-off time
4Time-delay turn-off time be 0.1～1.5 second, time-delay rly. Y turn-off time after 0.1～1.5 second
4Time-delay disconnect normally closed contact Y
4-1Time-delay disconnects, the driving solenoid Y outage of electro-magnet 7, electro-magnet 7 drives arc-suppressing switch 4 and disconnects under the effect of its returning place force, then by manually again the insulation spacer 5 that takes off being reinstalled between short-circuit block 3 and the riser bus bar 2, electric current on arc-suppressing switch 4 and the short-circuit block 3 is all transferred on the aluminium cell 1 of maintenance back, the carbon piece liter that will be connected again on the riser bus bar 2 is put in the aluminium water of specified altitude assignment, thereby finishes the fluting power-on servicing of maintenance back aluminium cell.
Claims (5)
1. aluminium cell linkage assembly short circuiting device that electrolysis series does not have a power failure, it comprises riser bus bar (2) and the short-circuit block (3) that is installed on the aluminium cell (1), short-circuit block (3) is installed on the riser bus bar (2), and an end of short-circuit block (3) is connected with the riser bus bar (2) of next aluminium cell (1) by bus bar, between the other end of short-circuit block (3) and riser bus bar (2), be lined with dismountable insulation spacer (5), it is characterized in that: between the riser bus bar (2) of aluminium cell (1) and short-circuit block (3), also be connected with an arc-suppressing switch (4) that only has a cease spark cover and pair of contact, be connected with four-bar mechanism (9) on the short-circuit block (3), the first connecting rod (9-1) of four-bar mechanism (9) is connected with short-circuit block (3), second connecting rod (9-2) and the 4th connecting rod (9-4) are connected with support (10) on being fixed on electrolyzer (1) by steady brace, and on four-bar mechanism (9), also be connected with drive unit (6) that drives four-bar mechanism (9) action and electro-magnet (7) and the electric control cabinet (8) that drives arc-suppressing switch (4) action, one end of drive unit (6) is connected with four-bar mechanism (7), its the other end is connected with support (10) on being fixed on aluminium cell (1), is provided with the electric elements of accessory drive (6) and electro-magnet (7) in electric control cabinet (8).
2. the aluminium cell linkage assembly short circuiting device that electrolysis series according to claim 1 does not have a power failure is characterized in that: drive unit (6) is drive magnetic, driving cylinder or hydraulic ram.
3. the aluminium cell linkage assembly short circuiting device that electrolysis series according to claim 1 does not have a power failure is characterized in that: drive unit (6) is connected with the 4th connecting rod (9-4).
4. the aluminium cell linkage assembly short circuiting device that electrolysis series according to claim 1 does not have a power failure is characterized in that: the electric elements in the electric control cabinet (8) comprise close push button (A), cut-off push button (B), start electromagnetic relay (Y
1), close electromagnetic relay (Y
2), the time closing time relay (Y
3), the time-delay turn-off time rly. (Y
4), the driving solenoid (X of drive unit (6)
1) and the arc extinguishing of electro-magnet (7) drive solenoid (Y); Start electromagnetic relay (Y
1) and the time closing time relay (Y
3) coils from parallel connection of coils after connect with the normally closed interlock of the normally open contact of close push button (A), cut-off push button (B) and to constitute the loop, and start electromagnetic relay (Y
1) energising keep normally open contact (Y
1-1) in parallel with the normally open contact of close push button (A); Close electromagnetic relay (Y
2) and time-delay rly. (Y turn-off time
4) coils from parallel connection of coils after connect with the normally closed interlock of the normally open contact of close push button (A), cut-off push button (B) and to constitute the loop, and close electromagnetic relay (Y
2) close and keep normally open contact (Y
2-1) touch with often opening of cut-off push button (B)
Head is in parallel; Driving solenoid (the X of drive unit (6)
1) back in parallel and startup electromagnetic relay (Y
1) connection normally open contact (Y
1-3) and the time closing time relay (Y
3) time closing normally open contact (Y
3-1) series connection formation loop; The arc extinguishing of electro-magnet (7) drives solenoid (Y) and time-delay rly. (Y turn-off time
4) time-delay disconnect normally closed contact (Y
4-1) and start electromagnetic relay (Y
1) startup normally open contact (Y
1-2) series connection formation loop, and starting electromagnetic relay (Y
1) startup normally open contact (Y
1-2) go up parallel connection and close electromagnetic relay (Y
2) close normally open contact (Y
2-2).
5. the aluminium cell linkage assembly short circuiting device that electrolysis series according to claim 4 does not have a power failure, it is characterized in that: the electric elements in the electric control cabinet (8) also comprise switch (K), and switch (K) is connected with the arc extinguishing solenoid (Y) of electro-magnet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202003264U CN201169634Y (en) | 2007-05-08 | 2007-05-08 | Aluminum electrolysis series non-power off aluminum cell link mechanism short circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202003264U CN201169634Y (en) | 2007-05-08 | 2007-05-08 | Aluminum electrolysis series non-power off aluminum cell link mechanism short circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201169634Y true CN201169634Y (en) | 2008-12-24 |
Family
ID=40208687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007202003264U Expired - Lifetime CN201169634Y (en) | 2007-05-08 | 2007-05-08 | Aluminum electrolysis series non-power off aluminum cell link mechanism short circuit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201169634Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820146A (en) * | 2012-08-22 | 2012-12-12 | 武汉长海电气科技开发有限公司 | Combined short-circuit switch |
| CN109554726A (en) * | 2019-01-28 | 2019-04-02 | 中国铝业股份有限公司 | A kind of start-stop device and method based on continuous anode potline risk slot |
-
2007
- 2007-05-08 CN CNU2007202003264U patent/CN201169634Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820146A (en) * | 2012-08-22 | 2012-12-12 | 武汉长海电气科技开发有限公司 | Combined short-circuit switch |
| CN102820146B (en) * | 2012-08-22 | 2015-04-29 | 武汉长海电气科技开发有限公司 | Combined short-circuit switch |
| CN109554726A (en) * | 2019-01-28 | 2019-04-02 | 中国铝业股份有限公司 | A kind of start-stop device and method based on continuous anode potline risk slot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INSTITUTE C Free format text: FORMER OWNER: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. Effective date: 20110523 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 550004 NO. 208, BEIJING ROAD, GUIYANG CITY, GUIZHOU PROVINCE TO: 550081 NO. 2, JINZHU ROAD, JINYANG NEW DISTRICT, GUIYANG CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110523 Address after: 550081 2 Jin Zhu Road, Jinyang New District, Guiyang 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081224 |