CN2475212Y - Monitoring terminal for section switch of network automation system - Google Patents
Monitoring terminal for section switch of network automation system Download PDFInfo
- Publication number
- CN2475212Y CN2475212Y CN 01226444 CN01226444U CN2475212Y CN 2475212 Y CN2475212 Y CN 2475212Y CN 01226444 CN01226444 CN 01226444 CN 01226444 U CN01226444 U CN 01226444U CN 2475212 Y CN2475212 Y CN 2475212Y
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- contact
- magnetic latching
- latching relay
- branch road
- normally opened
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Abstract
The utility model relates to a monitoring terminal for the disconnect switch of distribution network automation system in power system, which mainly comprises a DC power supply, a driving motor for the disconnect switch (M <1>), a motor control circuit (1) and a transmission line (4) of control signal used for the transmission of pulse control signal, the motor control circuit (1) comprises two main control magnetic self-perpetuating relays, a plurality of corresponding contacts and the contacts of two travel switches which are connected together, the utility model, which solves the problems of low control precision, the burn-out of driving motors, poor working reliability and ignoring energy existed in prior art, is used in the remote monitoring of the disconnect switch in power supply distribution network automation system.
Description
The utility model relates to the supervising device of a kind of power matching network system, particularly a kind of monitor terminal of electric power automation of distributive net system segment switch.
At present, the common Electromagnetic Switch of generally using in the electric power system, the mostly effect of the electromagnetism the suction-combining force by custom-designed combined floodgate and switching winding, control switch disconnects with closed, because there are problems such as magnetoelectricity loss and demagnetization in it in the magnetoelectricity transfer process, therefore its functional reliability is undesirable, and also can be affected useful life.After this people have invented a kind of block switch and control device thereof that relies on a drive motors push-and-pull connecting rod and then control switch to disconnect (separating brake) and closed (combined floodgate), its control device is mainly by drive motors, circuit for controlling motor and control signal transmission line are formed, the major control parts that use in its circuit for controlling motor are auxiliary relay and corresponding delay circuit, its operation principle is, calculate drive motors earlier and finish required journey time to close a floodgate (separating brake) from beginning to promote (leaving behind) switch connecting rod, then this journey time value is decided, utilize delay circuit and auxiliary relay, make drive motors in the journey time of above-mentioned setting, be in rotation (forward or reverse) state, thereby finish all processes of combined floodgate or separating brake.Under normal condition, Electric Machine Control is closed a floodgate, the separating brake journey time is generally Millisecond or second level, time is very short, connecting rod, when mechanical part such as switch running time is longer, can produce wearing and tearing in various degree, thereby changed combined floodgate, the traveled distance time of separating brake, because the journey time of motor divide-shut brake is very short, so the time error amount that the very little mechanical wear amount of each parts is brought will be occupied bigger ratio in whole journey time, thereby cause set journey time and traveled distance time than mistake, cause motor rotation blockage, burn or close a floodgate not in place, serious consequence that can not normal power supply.Therefore its shortcoming is, functional reliability is poor, is prone to that drive motors burns or fault such as not in place, the supply line's cisco unity malfunction of closing a floodgate.
The purpose of this utility model is, improves control precision, and a kind of functional reliability height is provided, can guarantees the monitor terminal of the distribution automation system block switch of supply line's operate as normal.
In order to achieve the above object, the solution that the utility model is taked is, it comprises the block switch drive motors, circuit for controlling motor and control signal transmission line, described block switch drive motors and circuit for controlling motor are by the direct-current power supply direct current, be characterized in, in above-mentioned circuit for controlling motor, first normally opened contact of first magnetic latching relay, first contact of the first magnetic latching relay coil and first travel switch is electrically connected and is connected into first branch road, first normally opened contact of second magnetic latching relay, first contact of the second magnetic latching relay coil and second travel switch is electrically connected and is connected into second branch road, the front end of the front end of first normally opened contact of described first magnetic latching relay and first normally opened contact of second magnetic latching relay, all be connected in the common head end of described first branch road and second branch road, and be connected with the positive electrical of above-mentioned DC power supply, the common terminal ground connection of described first branch road and second branch road, first contact of described first travel switch and first contact of described second travel switch, be that another contact closure is simultaneously opened in a contact, the interlock contact that open simultaneously another contact of the closing of contact, described control signal transmission line is electrically connected to the rear end of described first magnetic latching relay, first normally opened contact and the rear end of described second magnetic latching relay, first normally opened contact, the front end of second normally opened contact of described first magnetic latching relay, be electrically connected to the rear end of first normally opened contact of first terminals of described block switch drive motors and described second magnetic latching relay respectively, the front end of second normally opened contact of described second magnetic latching relay, be electrically connected to the rear end of first normally opened contact of second terminals of described block switch drive motors and described first magnetic latching relay respectively, the equal ground connection in rear end of the rear end of second normally opened contact of described first magnetic latching relay and second normally opened contact of described second magnetic latching relay.Above-mentioned control signal transmission line is the transmission line that is used to transmit the pulse control signal that control centre sends.The voltage of above-mentioned DC power supply can be 1.5V, 3V, 5V, 6V, 9V, 12V, 24V, 36V, 60V, 72V, 110V etc., and the high level voltage value of above-mentioned pulse control signal also can be 1.5V, 3V, 5V, 6V, 9V, 12V, 24V, 36V, 60V, 72V, 110V etc.When block switch is in disconnection (separating brake) initial condition, first closing of contact of above-mentioned first travel switch, open first contact of second travel switch simultaneously, when needs make block switch closure (combined floodgate), above-mentioned control centre sends one pulse control signal, then first magnetic latching relay coil moment got, its first normally opened contact, the equal adhesive of second normally opened contact, then the block switch drive motors begins forward rotation, promote the block switch connecting rod and do feed motion, when combined floodgate puts in place, touch first travel switch, then open first contact of first travel switch, first contact of second travel switch is closed simultaneously, the first magnetic latching relay coil losing electricity, its first normally opened contact, second normally opened contact all disconnects, the stall of drive motors dead electricity.When needs make block switch disconnect (separating brake), above-mentioned control centre sends one pulse control signal, the then above-mentioned second magnetic latching relay coil gets, its first normally opened contact, the adhesive simultaneously of second normally opened contact, the block switch drive motors begins backward rotation, pulling block switch connecting rod is done the separating brake action, when separating brake puts in place, touch second travel switch, then open first contact of second travel switch, and first contact of first travel switch is closed simultaneously, at this moment, the second magnetic latching relay coil losing electricity, its first normally opened contact, second normally opened contact all disconnects, the stall of block switch drive motors dead electricity.So loop control can realize the remote auto control of block switch divide-shut brake.Because being transformed to direct dependence traveled distance distance, its control mode that relies on journey time to set original technology determines that pulse control signal sends the control mode on opportunity, each parts has how much mechanical wear amount, how many wear extenies are the traveled distance distance just include in, sending also of pulse control signal adjusted thereupon, adapt to the requirement of traveled distance variable in distance with this, so just can accurately control the accurate journey time of motor positive and inverse, fault such as it is not in place the drive motors stall can not occur, burn and close a floodgate.
For the ease of practical operation and maintenance; the utility model preferably also includes selector switch; described selector switch comprises control signal input terminal, DC power supply terminals, control signal outlet terminal, locked end, manual control end and diverter switch; certain above-mentioned selector switch can also comprise shell, switch display unit, overload protective device etc., no longer describes in detail herein.Be connected with first hand switch between the rear end of first normally opened contact of described first magnetic latching relay and the described manual control end; between the rear end of first normally opened contact of described second magnetic latching relay and above-mentioned manual control end, be connected with second hand switch; the control signal transmission line of drawing from described control signal outlet terminal; be electrically connected to first normally opened contact rear end of above-mentioned first magnetic latching relay and the first normally opened contact rear end of the second magnetic protection relay respectively; the above-mentioned control signal transmission line that is used to transmit the pulse control signal that control centre sends is electrically connected with described control signal input terminal, the positive pole of described DC power supply by power line respectively with the DC power supply terminals of described selector switch; the common head end of described first branch road and second branch road is electrically connected.When above-mentioned selector switch was switched to automatic control position, then control signal input terminal and control signal outlet terminal conducted, and its operation principle is identical with above-mentioned principle.When not using automatic control mode, the diverter switch of selector switch can be switched to manual control position, manual control end and DC power supply terminals are conducted, press first hand switch with hand, then the first magnetic latching relay coil gets, its first normally opened contact, the adhesive simultaneously of second normally opened contact, the block switch drive motors just changes, closes a floodgate, and putting in place stops.Press second hand switch with hand, then the second magnetic latching relay coil get electric, the adhesive simultaneously of its first normally opened contact, second normally opened contact, the block switch drive motors gets electric counter-rotating, separating brake, separating brake puts in place and stops.As above-mentioned diverter switch is switched to locked end, then automatic control mode and manual control mode all can not carry out, and it is in safe off-position.
The high level voltage value and the DC power supply magnitude of voltage of the pulse control signal that sends when above-mentioned control centre are inconsistent, may make above-mentioned two charged deficiencies of magnetic latching relay coil, can not regular event the time, no matter whether the utility model is provided with selector switch, first hand switch and second hand switch, the utility model preferably also comprises first auxiliary relay and second auxiliary relay, and above-mentioned first auxiliary relay and second auxiliary relay are magnetic latching relay.Between the rear end and described dc power anode of first normally opened contact of above-mentioned first magnetic latching relay, be electrically connected with the normally opened contact of above-mentioned first auxiliary relay, between the rear end and above-mentioned dc power anode of first normally opened contact of described second magnetic latching relay, be connected with the normally opened contact of second auxiliary relay, second contact of described first auxiliary relay coil and described first travel switch is connected into the 3rd branch road, second contact of described second auxiliary relay coil and described second travel switch is connected into the 4th branch road, described the 3rd branch road and described the 4th branch road are parallel with one another, its common head end is electrically connected with described control signal transmission line, its common terminal ground connection, first contact of described first travel switch and its second contact are that both open closed simultaneously synchronization action contact simultaneously, first contact of described second travel switch and its second contact are that both open closed simultaneously synchronization action contact simultaneously, second contact of described first travel switch and second contact of described second travel switch are one and open another closure simultaneously, another interlock contact of opening simultaneously of closure.When block switch is in the initial condition of separating brake, first contact of above-mentioned first travel switch, second contact is all closed, first contact of second travel switch, all open second contact, if the control signal transmission line transmits a pulse control signal, then the first auxiliary relay coil gets, its normally opened contact adhesive, then first of first magnetic latching relay, the second two equal adhesives of normally opened contact, the block switch drive motors just changes, close a floodgate, combined floodgate puts in place when touching first travel switch, first contact of first travel switch, all open second contact, first contact of while second travel switch, second contact is all closed, make two normally opened contacts of the magnetic latching relay of winning disconnect the drive motors stall.If come a pulse control signal again, then the second auxiliary relay coil gets, its normally opened contact adhesive, the second magnetic latching relay coil gets, its first normally opened contact and the equal adhesive of second normally opened contact, block switch drive motors counter-rotating separating brake, separating brake put in place and touch second travel switch, then all open first contact of second travel switch, second contact, simultaneously first contact, second closing of contact of first travel switch.If above-mentioned two auxiliary relays are not set, then corresponding device thereof such as amplifying device etc. must be set, make the high level voltage value of above-mentioned pulse control signal identical with above-mentioned DC power supply magnitude of voltage, this structure also belongs to protection range of the present utility model.
In order further to improve its safe and reliable property, prevent that short circuit from appearring in the circuit that is connected with the block switch drive motors, no matter whether it is provided with above-mentioned selector switch, first hand switch, second hand switch, also no matter whether it is provided with first auxiliary relay, second auxiliary relay, the utility model preferably also comprises the normally-closed contact of above-mentioned first magnetic latching relay and the normally-closed contact of above-mentioned second magnetic latching relay, common head end at above-mentioned first branch road and second branch road, first normally opened contact of first magnetic latching relay, on the branch road that second terminals of described block switch drive motors are formed by connecting, be provided with the normally-closed contact of above-mentioned second magnetic latching relay of its break-make of control, common head end at described first branch road and second branch road, first normally opened contact of described second magnetic latching relay, on the branch road that first terminals of described block switch drive motors are formed by connecting, be provided with the normally-closed contact of above-mentioned first magnetic latching relay of its break-make of control.When the described first magnetic latching relay coil gets, its first normally opened contact, during the equal adhesive of second normally opened contact, its normally-closed contact then disconnects simultaneously, guarantee that the circuit that second normally opened contact of second magnetic latching relay, first normally opened contact and first magnetic latching relay is linked to be can not be short-circuited, when the described second magnetic latching relay coil gets, its first normally opened contact, during the equal adhesive of second normally opened contact, its normally-closed contact disconnects simultaneously, guarantee that the circuit that second normally opened contact of first normally opened contact of first magnetic latching relay and second magnetic latching relay is linked to be can not be short-circuited, thereby avoid the generation of accident.
For further improving its electrical safety, no matter the utility model adopts above-mentioned which kind of control circuit structure, is preferably in described direct current supply line and is provided with fuse or overload protective device.
No matter adopt above-mentioned which kind of circuit structure, between the common end and earth point of above-mentioned first branch road and second branch road, can also be provided with the normally closed switch that always is in electric conducting state, the access of above-mentioned normally closed switch is equal to lead and directly is communicated with form.
Because the utility model has adopted said structure, the master control relay that adopts in the above-mentioned drive motors control circuit is magnetic latching relay, and control centre is that benchmark sends pulse control signal with the traveled distance distance of drive motors push-and-pull block switch connecting rod, come the rotating and the shutdown of controlling and driving motor, thereby the action of motor-driven divide-shut brake is not subjected to the influence of the error that mechanical wear causes of mechanical parts such as connecting rod, solve prior art effectively and be prone to the drive motors stall, burn and close a floodgate not in place, circuit can not normally problem, improved its functional reliability greatly, avoid the generation of all kinds of accidents, also reduced the power consumption of control circuit simultaneously; After having set up selector switch and two hand switches, can directly manually control divide-shut brake at the scene without automatic control mode the time, strengthen the flexibility of its control operation, it is comparatively convenient to use; When its selector switch is switched to blocking, then manually, automatic control mode is all inoperative, the being perfectly safe property when guaranteeing overhaul of the equipments, not reason misoperation and personnel casualty accidents takes place with this; Access is used to carry out the normally-closed contact of two magnetic latching relays of interlocking, guarantee that further circuit is not short-circuited, therefore played the effect of dual fail-safe, the utlity model has divide-shut brake control precision height, functional reliability height, save the energy, flexible operation mode is convenient, can effectively avoid the drive motors stall to burn and advantage that fault such as control circuit short circuit takes place.
Below in conjunction with embodiment and accompanying drawing the utility model is further described.
Fig. 1 is embodiment 1 described circuit theory diagrams of the present utility model;
Fig. 2 is embodiment 2 described circuit theory diagrams of the present utility model;
Fig. 3 is embodiment 3 described circuit theory diagrams of the present utility model;
Fig. 4 is embodiment 4 described local circuit schematic diagrams of the present utility model;
Fig. 5 is the partial schematic diagram that the utility model is provided with fuse;
Fig. 6 is connected with the local circuit schematic diagram that always is in the electric conducting state normally closed switch between first branch road of the present utility model, the common end of second branch road and the earth point.
In partial schematic diagram shown in Figure 5, no matter the utility model adopts embodiment 1, embodiment 2, embodiment 3 (Fig. 3) or embodiment 4 described circuit structures, still adopt in embodiment 3 described circuit structures, remove the circuit structure of selector switch 5 and two hand switch HA, TA, perhaps take the circuit structure of other respective change, all on the power line that DC power supply is drawn, be provided with fuse RD.When above-mentioned fuse RD was replaced by overload protective device or sets up overload protective device, this structure also belonged to protection range of the present utility model.
In local circuit schematic diagram shown in Figure 6, no matter the utility model adopts embodiment 1, embodiment 2, embodiment 3 or embodiment 4 described circuit structures, still adopt on embodiment 3 described circuit structure bases or in the circuit structure of embodiment 3 (Fig. 3), remove selector switch 5 and two hand switch HA, TA after the basis of circuit structure on, have additional the normally-closed contact TK of two magnetic latching relays as shown in Figure 4 again
10, TK
20Circuit structure etc., all can between the common terminal D and earth point JD of described first branch road 2 and second branch road 3, be provided with the normally closed switch K that always is in electric conducting state
2Above-mentioned each circuit structure all belongs to protection range of the present utility model.
Claims (10)
1, a kind of monitor terminal of distribution automation system block switch comprises block switch drive motors (M
1), circuit for controlling motor (1) and control signal transmission line (4), described block switch drive motors (M
1) and circuit for controlling motor (1) by the direct-current power supply direct current, it is characterized in that, in described circuit for controlling motor (1), the first normally opened contact (TK of first magnetic latching relay
1'), the first magnetic latching relay coil (TK
1) with the first contact (S of first travel switch
1) being electrically connected is connected into first branch road (2), the first normally opened contact (TK of second magnetic latching relay
2'), the second magnetic latching relay coil (TK
2) with the first contact (S of second travel switch
2) being electrically connected is connected into second branch road (3), the first normally opened contact (TK of described first magnetic latching relay
1') front end and the first normally opened contact (TK of second magnetic latching relay
2') front end, all be connected in the common head end (A) of described first branch road (2) and second branch road (3), and be electrically connected common end (D) ground connection of described first branch road (2) and second branch road (3), the first contact (S of described first travel switch with the positive pole (DC) of described DC power supply
1) with the first contact (S of described second travel switch
2), be that another contact closure, the interlock contact that open simultaneously another contact of the closing of contact are simultaneously opened in a contact, described control signal transmission line (4) is electrically connected to described first magnetic latching relay, the first normally opened contact (TK
1') rear end (B) and described second magnetic latching relay, the first normally opened contact (TK
2') rear end (C), the second normally opened contact (TK of described first magnetic latching relay
1The front end of ") is electrically connected to described block switch drive motors (M respectively
1) first terminals (F) and the first normally opened contact (TK of described second magnetic latching relay
2') rear end (C), the second normally opened contact (TK of described second magnetic latching relay
2The front end of ") is electrically connected to described block switch drive motors (M respectively
1) second terminals (E) and the first normally opened contact (TK of described first magnetic latching relay
1') rear end (B), the second normally opened contact (TK of described first magnetic latching relay
1Second normally opened contact (the TK of the rear end of ") and described second magnetic latching relay
2The equal ground connection in the rear end of "), described control signal transmission line (4) are the transmission lines that is used to transmit the pulse control signal that control centre sends.
2, the monitor terminal of distribution motorized system block switch according to claim 1, it is characterized in that, it also comprises selector switch (5), and described selector switch (5) comprises control signal input terminal (YI), DC power supply terminals (DI), control signal outlet terminal (Y), locked end (BS), manual control end (S) and diverter switch (K
1), the first normally opened contact (TK of described first magnetic latching relay
1') rear end (B) and described manual control end (S) between be connected with first hand switch (HA), at the first normally opened contact (TK of described second magnetic latching relay
2') rear end (C) and above-mentioned manual control end (S) between be connected with second hand switch (TA), from the control signal transmission line (4) that described control signal outlet terminal (Y) is drawn, be electrically connected to the first normally opened contact (TK of above-mentioned first magnetic latching relay respectively
1') the first normally opened contact (TK of rear end (B) and second magnetic latching relay
2') rear end (C), the leading portion control signal transmission line that is used to transmit the pulse control signal that control centre sends is electrically connected with described control signal input terminal (YI), and the positive pole of described DC power supply (DC) is electrically connected with the common head end (A) of DC power supply terminals (DI), described first branch road (2) and second branch road (3) of described selector switch (5) respectively by power line.
3, the monitor terminal of distribution automation system block switch according to claim 1 and 2, it is characterized in that, it also comprises first auxiliary relay and second auxiliary relay, described first auxiliary relay and second auxiliary relay are magnetic latching relay, at the first normally opened contact (TK of described first magnetic latching relay
1') rear end (B) and described dc power anode (DC) between, be electrically connected with the normally opened contact (YKH ') of above-mentioned first auxiliary relay, at the first normally opened contact (TK of described second magnetic latching relay
2') rear end (C) and described dc power anode (DC) between, be electrically connected with the normally opened contact (YKF ') of second auxiliary relay, the second contact (S of the described first auxiliary relay coil (YKH) and described first travel switch
1') be connected into the 3rd branch road (6), the second contact (S of the described second auxiliary relay coil (YKF) and described second travel switch
2') being connected into the 4th branch road (7), described the 3rd branch road (6) and described the 4th branch road (7) are parallel with one another, and its common head end (H) is electrically connected with described control signal transmission line (4), its common terminal (L) ground connection, the first contact (S of described first travel switch
1) and its second contact (S
1') be that both open closed simultaneously synchronization action contact, the first contact (S of described second travel switch simultaneously
2) and its second contact (S
2') be that both open closed simultaneously synchronization action contact, the second contact (S of described first travel switch simultaneously
1') with the second contact (S of described second travel switch
2'), be one and open another closed simultaneously, another interlock contact of opening simultaneously of closure.
4, the monitor terminal of distribution automation system block switch according to claim 1 and 2 is characterized in that, it also comprises the normally-closed contact (TK of described first magnetic latching relay
10) and the normally-closed contact (TK of described second magnetic latching relay
20), at described first branch road (2) and the common head end (A) of second branch road (3), the first normally opened contact (TK of first magnetic latching relay
1'), described block switch drive motors (M
1) the branch road that is formed by connecting of second terminals (E) on, be provided with the normally-closed contact (TK of described second magnetic latching relay of its break-make of control
20), at described first branch road (2) and the common head end (A) of second branch road (3), the first normally opened contact (TK of described second magnetic latching relay
2'), described block switch drive motors (M
1) the branch road that is formed by connecting of first terminals (F) on, be provided with the normally-closed contact (TK of described first magnetic latching relay of its break-make of control
10).
5, the monitor terminal of distribution automation system block switch according to claim 3 is characterized in that, it also comprises the normally-closed contact (TK of described first magnetic latching relay
10) and the normally-closed contact (TK of described second magnetic latching relay
20), at described first branch road (2) and the common head end (A) of second branch road (3), the first normally opened contact (TK of first magnetic latching relay
1'), described block switch drive motors (M
1) the branch road that is formed by connecting of second terminals (E) on, be provided with the normally-closed contact (TK of described second magnetic latching relay of its break-make of control
20), at described first branch road (2) and the common head end (A) of second branch road (3), the first normally opened contact (TK of described second magnetic latching relay
2'), described block switch drive motors (M
1) the branch road that is formed by connecting of first terminals (F) on, be provided with the normally-closed contact (TK of described first magnetic latching relay of its break-make of control
10).
6, the monitor terminal of distribution automation system block switch according to claim 1 and 2 is characterized in that, on the power line that described DC power supply is drawn, is provided with fuse (RD) or overload protective device.
7, the monitor terminal of distribution automation system block switch according to claim 3 is characterized in that, on the power line that described DC power supply is drawn, is provided with fuse (RD) or overload protective device.
8, the monitor terminal of distribution automation system block switch according to claim 4 is characterized in that, on the power line that described DC power supply is drawn, is provided with fuse (RD) or overload protective device.
9, the monitor terminal of distribution automation system block switch according to claim 1 and 2, it is characterized in that, between the common end (D) and earth point (JD) of described first branch road (2) and second branch road (3), be provided with the normally closed switch (K that always is in electric conducting state
2).
10, the monitor terminal of distribution automation system block switch according to claim 5, it is characterized in that, between the common end (D) and earth point (JD) of described first branch road (2) and second branch road (3), be provided with the normally closed switch (K that always is in electric conducting state
2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01226444 CN2475212Y (en) | 2001-06-06 | 2001-06-06 | Monitoring terminal for section switch of network automation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01226444 CN2475212Y (en) | 2001-06-06 | 2001-06-06 | Monitoring terminal for section switch of network automation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2475212Y true CN2475212Y (en) | 2002-01-30 |
Family
ID=33642090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01226444 Expired - Lifetime CN2475212Y (en) | 2001-06-06 | 2001-06-06 | Monitoring terminal for section switch of network automation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2475212Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403657A (en) * | 2011-10-29 | 2012-04-04 | 枣庄矿业集团高庄煤业有限公司 | Cyfzd intelligent low voltage switch cabinet |
-
2001
- 2001-06-06 CN CN 01226444 patent/CN2475212Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403657A (en) * | 2011-10-29 | 2012-04-04 | 枣庄矿业集团高庄煤业有限公司 | Cyfzd intelligent low voltage switch cabinet |
| CN102403657B (en) * | 2011-10-29 | 2014-05-14 | 枣庄矿业集团高庄煤业有限公司 | CYFZD intelligent low voltage switch cabinet |
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| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING DUOYUAN JUYE ELECTRICAL TECHNOLOGY CO., L Free format text: FORMER OWNER: GUAN LAIJUN; PATENTEE Effective date: 20060512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060512 Address after: 100022 Beijing city Chongwen District No. 6 South Lane faithful Yuanyangdeyi A block 1808 Patentee after: Beijing multivariate giant industry electric technology Co., Ltd. Address before: 100034, No. 2, gate 6, jade Gallery garden, 202, Beijing, Xicheng District Co-patentee before: Zhao Yinghua Patentee before: Guan Laijun Co-patentee before: Zhang Ping |
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| ASS | Succession or assignment of patent right |
Owner name: DONG DEBAO Free format text: FORMER OWNER: BEIJING DUOYUAN JUYE ELECTRICAL TECHNOLOGY CO., LTD. Effective date: 20070427 |
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Effective date of registration: 20070427 Address after: 100034, No. 2, 202 gate, No. 6 jade Gallery garden, Beijing, Xicheng District Patentee after: Dong Debao Address before: 100022 Beijing city Chongwen District No. 6 South Lane faithful Yuanyangdeyi A block 1808 Patentee before: Beijing multivariate giant industry electric technology Co., Ltd. |
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Expiration termination date: 20110606 Granted publication date: 20020130 |