CN204030310U - A kind of power distribution cabinet with passive electromagnetic lock - Google Patents
A kind of power distribution cabinet with passive electromagnetic lock Download PDFInfo
- Publication number
- CN204030310U CN204030310U CN201420479131.8U CN201420479131U CN204030310U CN 204030310 U CN204030310 U CN 204030310U CN 201420479131 U CN201420479131 U CN 201420479131U CN 204030310 U CN204030310 U CN 204030310U
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- electromagnetic lock
- raceway groove
- power
- mos pipe
- power distribution
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Abstract
The utility model discloses a kind of power distribution cabinet with passive electromagnetic lock, comprise power distribution cabinet, on cabinet door for power distributing cabinet, be provided with passive electromagnetic lock body, passive electromagnetic lock body comprises successively the high pressure acquisition module, alarm for high voltage circuit, the power-off that the connect circuit that opens the door, power-off is opened the door on circuit and is also connected with cabinet door lock enable switch, lock body, band Electrical key in turn, a kind of power distribution cabinet with passive electromagnetic lock, solved in the situation of the power distribution cabinet electric power system power-off existing in prior art, electromagnetic lock loses the problem of blocking function automatically.
Description
Technical field
The utility model belongs to blocking mechanism technical field in electrical control, is specifically related to a kind of power distribution cabinet with passive electromagnetic lock.
Background technology
In high voltage power distributing cabinet, have " five is anti-" safety problem, one of them is: the design of high-voltage board must meet the principle of " preventing from entering charged (high pressure) layout ".That is to say that in cabinet, having high pressure to exist does not just allow to open cabinet door.Conventional design is on cabinet door, to fill an electrification display and electromagnetic lock.To be high pressure be referred to as transducer-low pressure obtaining and light a device of neon lamp or light-emitting diode by being cast in step-down-this insulator of electric capacity in insulator electrification display.For avoiding long-term energising easily to make neon lamp damage, electrification display specialized designs button, in the time not needing to show, can cut off neon lamp path to extend life-span of neon lamp. this electrification display is generally arranged in earthed switch and the chain power distribution cabinet of hyperbaric chamber door, only the high pressure in cabinet is had or not to a demonstration of do.In the cabinet that there is no earthed switch, electrification display also will be responsible for the task of latching door, electrification display that now will mounting strap locking.The locking of so-called band is in electrification display circuit, increases a set of high pressure identification loop, and compares with the power supply of the electromagnetic lock that pins door.The design of electromagnetic lock is the same with electromagnet, is the principle of utilizing electric magnetisation, and in the time that electric current passes through silicon steel sheet, electromagnetic lock can produce the powerful suction absorption iron plate that holds tightly and reach the effect of locking a door.As long as slight electric current electromagnetic lock will produce greatest magnetic force, when electric current not time, electromagnetic lock loses suction and can open the door.High pressure exists, and the power supply of electromagnetic lock is by inoperative; In cabinet, there is no high pressure, electromagnetic lock will be opened, cabinet door for power distributing cabinet is opened automatically, in this case, for power distribution cabinet self, there is potential safety hazard, if other people of inoperative personnel are strayed in power distribution cabinet, facility in power distribution cabinet is operated, once the situations such as unexpected incoming call occur, consequence is by hardly imaginable.
Utility model content
The purpose of this utility model is to provide a kind of power distribution cabinet with passive electromagnetic lock, has solved in the situation of the power distribution cabinet electric power system power-off existing in prior art, and electromagnetic lock loses the problem of blocking function automatically.
The technical scheme that the utility model adopts is, a kind of power distribution cabinet with passive electromagnetic lock, comprise power distribution cabinet, on cabinet door for power distributing cabinet, be provided with passive electromagnetic lock body, passive electromagnetic lock body comprises successively the high pressure acquisition module, alarm for high voltage circuit, the power-off that the connect circuit that opens the door, and power-off is opened the door on circuit and is also connected with cabinet door lock enable switch, lock body, band Electrical key in turn.
Feature of the present utility model is also,
High pressure acquisition module comprises 3 groups of voltage transformers that are connected in 10KV triple line, 3 groups of voltage transformers are connected with 3 light-emitting diodes respectively, each light-emitting diode connects 1 current-limiting resistance, each current-limiting resistance is connected with 1 diode again, and 3 diodes finally connect into alarm for high voltage circuit.
Alarm for high voltage circuit comprises N raceway groove mos pipe, the grid contact resistance of N raceway groove mos pipe, 3 diodes of resistance and high pressure acquisition module link together, between the grid of N raceway groove mos pipe and resistance, be also connected with respectively one end of resistance and one end of voltage-stabiliser tube, the other end of resistance and the equal ground connection of the other end of voltage-stabiliser tube, the drain electrode of N raceway groove mos pipe and the power-off circuit that opens the door is connected.
The power-off circuit that opens the door comprises P raceway groove mos pipe, and the drain electrode of P raceway groove mos pipe is connected with the drain electrode of described N raceway groove mos pipe, and the grid two ends of P raceway groove mos pipe all connect 1 divider resistance, and the drain electrode of P raceway groove mos pipe is also connected with cabinet door lock enable switch.
The beneficial effects of the utility model are, a kind of power distribution cabinet with passive electromagnetic lock, detect and in power distribution cabinet, have or not power supply by voltage transformer, whether light-emitting diode is lighted and in alert cabinet, is had or not electric situation, by N raceway groove mos pipe and the collocation of P raceway groove mos pipe are used, electromagnetic lock is realized has electric locking, still locking in the situation of power-off, but just can make the function opened of lock as long as insert with Electrical key, ensure that power distribution cabinet is inner and entered the interior personnel's of power distribution cabinet safety by mistake.
Brief description of the drawings
Fig. 1 is passive electromagnetic lock structural representation in a kind of power distribution cabinet with passive electromagnetic lock of the utility model;
Fig. 2 is passive electromagnetic lock circuit connection diagram in a kind of power distribution cabinet with passive electromagnetic lock of the utility model.
In figure, 1. high pressure acquisition module, 2. alarm for high voltage circuit, the 3. power-off circuit that opens the door, 4. cabinet door lock enable switch, 5. lock body, 6. band Electrical key.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
A kind of power distribution cabinet with passive electromagnetic lock of the utility model, comprise power distribution cabinet, on cabinet door for power distributing cabinet, be provided with passive electromagnetic lock body, passive electromagnetic lock body construction schematic diagram as shown in Figure 1, comprise the high pressure acquisition module 1 connecting successively, alarm for high voltage circuit 2, the power-off circuit 3 that opens the door, power-off is opened the door on circuit 3 and is also connected with cabinet door lock enable switch 4 in turn, lock body 5, band Electrical key 6, wherein, high pressure acquisition module 1 comprises 3 groups of voltage transformers that are connected in 10KV triple line, 3 groups of voltage transformers are connected with 3 light-emitting diodes respectively, each light-emitting diode connects 1 current-limiting resistance, each current-limiting resistance is connected with 1 diode again, 3 diodes finally connect into alarm for high voltage circuit 2, alarm for high voltage circuit 2 comprises N raceway groove mos pipe, the grid contact resistance of N raceway groove mos pipe, 3 diodes of resistance and high pressure acquisition module 1 link together, between the grid of N raceway groove mos pipe and resistance, be also connected with respectively one end of resistance and one end of voltage-stabiliser tube, the other end of resistance and the equal ground connection of the other end of voltage-stabiliser tube, the drain electrode of N raceway groove mos pipe and the described power-off circuit 3 that opens the door is connected, the power-off circuit 3 that opens the door comprises P raceway groove mos pipe, the drain electrode of P raceway groove mos pipe is connected with the drain electrode of described N raceway groove mos pipe, the grid two ends of P raceway groove mos pipe all connect 1 divider resistance, the drain electrode of P raceway groove mos pipe is also connected with cabinet door lock enable switch 4, physical circuit annexation as shown in Figure 2.
A kind of power distribution cabinet with passive electromagnetic lock of the utility model, the course of work is as follows, under normal circumstances, band Electrical key 6 is not in electromagnetic lock, in the time having electricity in 10KV triple line, 3 groups of voltage transformers that are now connected in 10KV triple line will collect voltage, and then the light-emitting diode that is connected on the voltage transformer other end will be lit, illustrate and in power distribution cabinet, have electricity, and connected current-limiting resistance at the other end of light-emitting diode, just can ensure that on light-emitting diode, electric current is 5mA, current-limiting resistance is connected with diode again, the effect of diode is forward conduction, repercussion cut-off, that is to say, in the time that circuit has electricity, now diode is switched on, and then N raceway groove mos manages and P raceway groove mos pipe is unlocked, cabinet door lock enable switch 4 closures, and then 5 lockings of carrying, when in power distribution cabinet when power-off, in 10KV triple line, do not have electricity, 3 groups of voltage transformers that are now connected in 10KV triple line just do not collect voltage, the light-emitting diode that is now connected to the voltage transformer other end can not be lit, remind operating personnel that now power distribution cabinet is interior without electricity, simultaneously, the diode that is connected to the current-limiting resistance other end will end, the no longer conducting of whole high pressure acquisition module 1 circuit, N raceway groove mos pipe and P raceway groove mos pipe now all can not be opened, so cabinet door lock enable switch 4 is all the time in closed state, lock body 5 is blockings, in the time having electricity in 10KV triple line, if band Electrical key 6 inserts in lock body, now, P raceway groove mos pipe will be worked, the light-emitting diode being connected on N raceway groove mos pipe is lit, alert now has high-tension electricity in power distribution cabinet inside, need careful operation, cabinet door lock enable switch 4 is opened simultaneously, and then lock body 5 is in unlocking condition, in the time there is no electricity in 10KV triple line, if band Electrical key 6 inserts in lock body, now, P raceway groove mos pipe is owing to can working equally under the effect with Electrical key 6, but the light-emitting diode being now connected on N raceway groove mos pipe can not be lit, alert does not now have high-tension electricity in power distribution cabinet inside, safety in cabinet, cabinet door lock enable switch 4 is opened simultaneously, and then lock body 5 is in unlocking condition.
A kind of power distribution cabinet with passive electromagnetic lock of the utility model, in electromagnetic lock, be used in conjunction with by increasing N raceway groove mos pipe and P raceway groove mos pipe, make electromagnetic lock realize electric locking, still locking in the situation of power-off, but as long as insert the function that just can make lock open with Electrical key 6, the open-drain circuit of our conventional metal-oxide-semiconductor in Switching Power Supply, completes desirable analog switch device.
Claims (4)
1. one kind has the power distribution cabinet of passive electromagnetic lock, comprise power distribution cabinet, it is characterized in that, on cabinet door for power distributing cabinet, be provided with passive electromagnetic lock body, described passive electromagnetic lock body comprises successively the high pressure acquisition module (1), alarm for high voltage circuit (2), the power-off that the connect circuit (3) that opens the door, and power-off is opened the door on circuit (3) and is also connected with cabinet door lock enable switch (4), lock body (5), band Electrical key (6) in turn.
2. a kind of power distribution cabinet with passive electromagnetic lock according to claim 1, it is characterized in that, described high pressure acquisition module (1) comprises 3 groups of voltage transformers that are connected in 10KV triple line, 3 groups of voltage transformers are connected with 3 light-emitting diodes respectively, each light-emitting diode connects 1 current-limiting resistance, each current-limiting resistance is connected with 1 diode again, and described 3 diodes finally connect into described alarm for high voltage circuit (2).
3. a kind of power distribution cabinet with passive electromagnetic lock according to claim 2, it is characterized in that, described alarm for high voltage circuit (2) comprises N raceway groove mos pipe, the grid contact resistance of described N raceway groove mos pipe, 3 diodes of described resistance and high pressure acquisition module (1) link together, between the grid of described N raceway groove mos pipe and resistance, be also connected with respectively one end of resistance and one end of voltage-stabiliser tube, the other end of described resistance and the equal ground connection of the other end of voltage-stabiliser tube, the drain electrode of described N raceway groove mos pipe and the described power-off circuit (3) that opens the door is connected.
4. a kind of power distribution cabinet with passive electromagnetic lock according to claim 3, it is characterized in that, the described power-off circuit (3) that opens the door comprises P raceway groove mos pipe, the drain electrode of described P raceway groove mos pipe is connected with the drain electrode of described N raceway groove mos pipe, the grid two ends of described P raceway groove mos pipe all connect 1 divider resistance, and the drain electrode of described P raceway groove mos pipe is also connected with described cabinet door lock enable switch (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479131.8U CN204030310U (en) | 2014-08-22 | 2014-08-22 | A kind of power distribution cabinet with passive electromagnetic lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479131.8U CN204030310U (en) | 2014-08-22 | 2014-08-22 | A kind of power distribution cabinet with passive electromagnetic lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030310U true CN204030310U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420479131.8U Expired - Fee Related CN204030310U (en) | 2014-08-22 | 2014-08-22 | A kind of power distribution cabinet with passive electromagnetic lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162309A (en) * | 2015-08-28 | 2015-12-16 | 洛阳中重自动化工程有限责任公司 | Passive alternating current/direct current energized display circuit and method for explosion-proof frequency converter used in mines |
| CN114396201A (en) * | 2021-12-24 | 2022-04-26 | 珠海沃顿电气有限公司 | Passive electromagnetic interlocking device |
-
2014
- 2014-08-22 CN CN201420479131.8U patent/CN204030310U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162309A (en) * | 2015-08-28 | 2015-12-16 | 洛阳中重自动化工程有限责任公司 | Passive alternating current/direct current energized display circuit and method for explosion-proof frequency converter used in mines |
| CN114396201A (en) * | 2021-12-24 | 2022-04-26 | 珠海沃顿电气有限公司 | Passive electromagnetic interlocking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160822 |