CN205376346U - Electrified ground sword device that closes is prevented to switch board - Google Patents
Electrified ground sword device that closes is prevented to switch board Download PDFInfo
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- CN205376346U CN205376346U CN201520985022.8U CN201520985022U CN205376346U CN 205376346 U CN205376346 U CN 205376346U CN 201520985022 U CN201520985022 U CN 201520985022U CN 205376346 U CN205376346 U CN 205376346U
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Abstract
The utility model provides an electrified ground sword device that closes is prevented to switch board, includes the electromagnetic lock, and the electromagnetic lock includes casing, lockpin control module, and lockpin control module installs in the casing, its lockpin extension during the circular telegram of lockpin control module, its lockpin withdrawal during the outage, the electromagnetic lock still includes set bar and handle, and the equal movable mounting of handle and set bar is on the casing, and handle and set bar be connected together form the link gear, and the set bar has spacing position and the spacing position of non -, lockpin control module and link gear cooperation, and during the outage of lockpin control module, the lockpin through its extension is with the set bar locking in spacing position to withdraw its lockpin after the circular telegram in order to remove the locking to the set bar at it, make the set bar can whip the handle and move non - spacing position from spacing position. The utility model discloses the electromagnetic lock unblock is reliable, has increased artificial verification step to it is correct to ensure to test the electricity, grounding safety.
Description
Technical field
This utility model relates to a kind of power distribution cabinet and prevents charged conjunction ground knife system.
Background technology
Fig. 1,2 for the totally-enclosed power distribution cabinet primary connection figure of distribution.In Fig. 1, distribution inlet wire is connected with bus M by the three-station 603 in the three-station 601 in incoming line cabinet or contact cabinet, and the potential indicator Z in incoming line cabinet, contact cabinet is respectively connected to the inlet wire side of switch 601,603.In Fig. 2, distribution inlet wire passes sequentially through the double switch 601 in incoming line cabinet, disconnecting link 6011 is connected with bus M, and inlet wire side ground cutter 60140 and potential indicator Z in incoming line cabinet are connected in double and switch the inlet wire side of 601.
Mechanical latching is had between above-mentioned switch and ground cutter, for three-station, the earthing position of the disconnection, make position and the switch that namely switch can only select one operation, after only switching off, just can carry out closing ground cutter operation, pull open after ground cutter could combination switch, so can effectively prevent that bus is charged closes ground cutter or the generation with the ground cutter by mistake pernicious misoperation fault of combination switch.
For distribution incoming line cabinet and contact (looped network) cabinet, as shown in Figure 1, 2, after switch 601,603,601 disconnection, inlet wire side cable is still likely to charged.Now owing to switch disconnects, close ground cutter locking and release.Due to incoming line cabinet, contact cabinet full-closed structure, cause cannot directly electrical verification, be only capable of rely on observation potential indicator thereon judge that whether distribution inlet wire side charged.Currently require that observation band electrical indicator confirms that distribution inlet wire side is without, after electricity, operating conjunction ground cutter.If potential indicator fault, then as easy as rolling off a log there is erroneous judgement line outage problem, now once close ground cutter or three-station being forwarded to earthing position, the charged pernicious misoperation fault closing ground cutter will occur.
If ground cutter cannot realize inlet wire side live locking, existing for the charged risk closing ground cutter, once there are several such pernicious misoperation faults in distribution.In order to prevent the generation of such accident, during fractional unit design power distribution cabinet, eliminate ground, inlet wire side cutter, but this brings again bigger problem, when inlet wire side cable fault requires to overhaul, due to totally enclosed cabinet cannot another hanging earthing conductor, now once false switching power transmission, it will cause human casualty accident.
China's application number 201020622612.1, denomination of invention is " circuit for preventing charged grounding switch from false switching of looped network cabinet ", discloses a kind of electromagnetic lock, during electromagnetic lock energising, its dead bolt ejects, during power-off, dead bolt is retracted, and is arranged in ring main unit by this electromagnetic lock, when its dead bolt stretches out, the baffle plate of ground connection handle hole can be blocked, operation handle can not insert ground connection handle hole, under earthing will not be closed, prevents charged conjunction ground cutter in this way.
Above-mentioned electromagnetic lock is automatically obtained the locking to ring main unit ground connection handle hole and unblock according to the charged state of inlet wire, for the unreliability automatically terminating locking, existing industry regulatory requirements, change and automatically control as Non-follow control, to increase artificial verification step, it is ensured that electrical verification is correct, grounding safety.
Utility model content
Technical problem to be solved in the utility model, it is simply that provide the power distribution cabinet that a kind of Non-follow control unlocks to prevent charged conjunction ground knife system.
Technical problem of the present utility model solves by following technical solution: a kind of power distribution cabinet prevents charged conjunction ground knife system, including electromagnetic lock, described electromagnetic lock includes housing, lock pin controls module, described lock pin controls module and is arranged in described housing, described lock pin controls its lock pin elongation during module energising, and during power-off, its lock pin is retracted；
nullIt is characterized in that，Described electromagnetic lock also includes locking bolt and handle，Described handle and locking bolt are all movably arranged on described housing，Described handle and described locking bolt connect together，Form link gear，To be operated by described handle driving described locking bolt synchronizing moving，Described locking bolt has to form, with the enterprising line side ground cutter of power distribution cabinet or three-station stop, the restraining position stoping described ground cutter or three-station to carry out closing the position limiting structure of ground cutter operation，Make power distribution cabinet enterprising line side ground cutter or three-station can normally complete the non-restraining position closing ground cutter operation with to cancel described position limiting structure，Described lock pin controls module and coordinates with described link gear，When lock pin controls module power-down，By the lock pin of its elongation, described locking bolt is locked in restraining position，And its lock pin of retracting after its energising is to release the locking to described locking bolt，Make locking bolt can move to non-restraining position with described handle from restraining position.
The energising power-off of this utility model electromagnetic lock, its locking bolt can not move as non-restraining position from restraining position automatically, but need staff operation handle could realize unblock, it is achieved that change and automatically control as Non-follow control, make the mode of operation of this utility model electromagnetic lock meet industry regulatory requirements.
As a kind of improvement of the present utility model, described housing is additionally provided with for coordinating with described handle and makes described locking bolt be maintained at the retaining structure of described non-restraining position to block described handle, this structure makes operator after locking bolt is moved non-restraining position by restraining position by operation handle, it is possible to temporarily decontrols handle and carries out other operation.
As improvement of the present utility model, described link gear is also equipped with for making described locking bolt automatically restore to the elastic mechanism of restraining position from non-restraining position, so that after unclamping described handle, link gear under the effect of elastic mechanism, can make locking bolt automatically restore to restraining position.
Described electromagnetic lock also includes forcing unlocking structure, and described pressure unlocking structure includes unblanking key and the keyhole that is positioned on described housing, described in key of unblanking insert after described keyhole completes unlocking action, promote described lock pin to make its locking released described locking bolt of retracting.
As further improvement of the utility model, described electromagnetic lock also includes normally opened switch module, and described switch module is arranged in described housing, and its operating side passes described housing and exposes, described switch module controls module with described lock pin and is connected, and controls described lock pin and controls the power on/off of module.
This utility model arranges normally opened switch module, makes lock pin control module only while plant-grid connection electromagnetic lock carrying out closes the operation of described switch module, and just the described locking bolt of conducting unblock, is equivalent to additionally be additionally arranged again one people for determining step.
It addition, set up normally opened switch module, in order to behind the operating side unclamping described switch module, lock pin controls module can lock described locking bolt immediately, make handle immediately enter and can not promote state, it is not necessary to wait until after electromagnetic lock dead electricity, lock pin controlling organization just locks locking bolt.
Furthermore, the electromagnetic lock of normally closed "on" position very easily fault, reliability is low, and this utility model sets up normally opened switch module, is conducive to improving the reliability of electromagnetic lock.
Described electromagnetic lock also includes the electromagnetic lock display lamp for indicating described lock pin controlling organization power on/off state.
This utility model also provides for the sensor circuit of a kind of electriferous state for sensing distribution inlet wire threephase cable, specific as follows:
Described power distribution cabinet prevents that the charged ground knife system that closes also includes the sensor circuit of the electriferous state for sensing distribution inlet wire threephase cable, described sensor circuit is connected with described electromagnetic lock, when sensing that described distribution inlet wire threephase cable is all not charged, control electromagnetic lock described in plant-grid connection.
nullDescribed sensor circuit includes three sensors for being respectively connected with described distribution inlet wire threephase cable，Also include commutator、On-off circuit、Power switch and power switch power supply circuits，Described power switch has control circuit and output circuit，Three described sensor output connect a described commutator respectively，The AC signal that described sensor exports is rectified into direct current signal by described commutator，After the outfan parallel connection of three commutators, the input with described on-off circuit is connected，Described power switch power supply circuits are connected with the input of the control circuit of described power switch，The outfan of described on-off circuit is connected with the control circuit of described power switch，The outfan of the control circuit of the described power switch output head grounding by described on-off circuit，Described on-off circuit is opened by it、Off status controls the break-make of the control circuit of described power switch，Thus controlling the on off state of the output circuit of described power switch，The output circuit of described power switch is connected in the power supply circuits of described electromagnetic lock，To control the access of described electromagnetic lock power supply.
The input of the control circuit of described power switch is also by power switch power supply indicator ground connection.
The outfan of the control circuit of described power switch is also in series with power switch status indicator lamp.
The described anti-charged ground knife system that closes also includes the three-phase indicating circuit for indicating distribution inlet wire threephase cable electriferous state, described indicating circuit is constituted by after a light emitting diode and current-limiting resistance series connection, entirety is in parallel with an electric capacity of voltage regulation again, the outfan of the commutator of each phase connects after indicating circuit described in a phase Parallel opertation respectively to the input of described on-off circuit again, described commutator is a half-wave rectifier cell, in order to make to remind in a flashing manner the electriferous state of each phase cable of user as the three-phase indicating circuit of distribution inlet wire threephase cable electriferous state.
nullDetailed description of the invention as described electromagnetic lock，Described locking bolt is slidably mounted in described housing，Described housing is provided with the chute axially in parallel with described locking bolt，Described handle is arranged in described chute，Lower end is penetrated in described housing by described chute and is connected with described locking bolt，When described locking bolt is in restraining position，The elongation of its one end passes described housing，The side of described locking bolt is provided with the locked groove for holding described lock pin free end，It is adjacent with described locking bolt in described housing that described lock pin controls module，Its lock pin is relative with the side of described locking bolt，The lock pin of elongation offsets with the side of described locking bolt，Under the effect of described elastic mechanism，Described lock pin and locking bolt energy relative sliding，When described locking bolt is in restraining position，The free end of described lock pin is just relative with the locked groove of described locking bolt side，If now lock pin elongation，Its free end just stretches in described locked groove，To lock described locking bolt，After lock pin retraction，Its free end exits described locked groove，Release the locking to described locking bolt.
Relative to prior art, this utility model has the advantages that
1) electromagnetic lock of the present utility model is additionally arranged handle and normally opened switch module, change and automatically control as Non-follow control, improve the reliability that electromagnetic lock unlocks, add artificial verification step, to guarantee that electrical verification is correct, the enterprising line side ground cutter of power distribution cabinet or three-station grounding safety, make this utility model electromagnetic lock meet existing industry regulatory requirements；
2) power distribution cabinet of the present utility model prevents that the charged ground knife system that closes includes electromagnetic lock and for sensing the sensor circuit of the electriferous state of distribution inlet wire threephase cable, the this utility model electriferous state by sensor circuit perception distribution inlet wire threephase cable, only when distribution inlet wire threephase cable is all not charged, just by plant-grid connection electromagnetic lock, electromagnetic lock is made to be in operable state, and the distribution arbitrary phase of inlet wire threephase cable or biphase charged time, power supply does not all access electromagnetic lock, electromagnetic lock can not be operated, all the time position limiting structure is formed with the enterprising line side ground cutter of power distribution cabinet or three-station stop, ground cutter operation is closed to stop described ground cutter or three-station to carry out, prevent the charged generation closing ground cutter misoperation fault；
3) power distribution cabinet of the present utility model prevent charged close ground knife system can with on power distribution cabinet original potential indicator with the use of, it is used alone also by setting up three-phase indicating circuit, industry code can be met about the power distribution cabinet electrical verification safety requirements no less than two criterions.
Accompanying drawing explanation
Fig. 1,2 for the totally-enclosed power distribution cabinet primary connection figure of distribution；
Fig. 3 is the internal circuit schematic diagram that this utility model prevents the charged electromagnetic lock closing ground knife system embodiment one；
Fig. 4 is the axonometric chart one (locking bolt is in non-restraining position) that this utility model prevents the charged electromagnetic lock closing ground knife system embodiment one；
Fig. 5 is the top view (locking bolt is in restraining position) that this utility model prevents the charged electromagnetic lock internal structure closing ground knife system embodiment one；
Fig. 6 is the axonometric chart two (locking bolt is in non-restraining position) that this utility model prevents the charged electromagnetic lock internal structure closing ground knife system embodiment one；
Fig. 7 is the axonometric chart that this utility model prevents the charged link gear closing ground knife system embodiment one；
Fig. 8 is the structural representation that this utility model prevents the key of the charged electromagnetic lock closing ground knife system embodiment one；
Fig. 9 is the structure chart that this utility model prevents the charged electromagnetic lock keyhole closing ground knife system embodiment one；
Figure 10 is the use state reference map that this utility model prevents the charged electromagnetic lock closing ground knife system embodiment one；
Figure 11 is the circuit theory diagrams that this utility model prevents the charged sensor circuit closing ground knife system embodiment one；
Figure 12 is the top view that this utility model prevents the charged electromagnetic lock closing ground knife system embodiment two.
Detailed description of the invention
Power distribution cabinet described in this utility model prevents that the charged power distribution cabinet closed in ground knife system includes distribution incoming line cabinet and contact (looped network) cabinet and other inlet wire side various middle piezoelectricity gas holder with ground cutter.
Fig. 3 is the internal circuit schematic diagram of this utility model electromagnetic lock, L (+), N (-) represent electromagnetic lock power supply positive and negative input, after plant-grid connection electromagnetic lock, after pressing the power knob T of normally opened switch module, lock pin controls the coil L conducting in module, meanwhile, by current-limiting resistance RLIt is connected in parallel on the power supply indicator D at coil L two endsLLuminescence, instruction electromagnetic lock is now in released state, namely relieves the locking to locking bolt, so that the locking bolt of electromagnetic lock can be moved.
Fig. 4～7 are the structure chart of the electromagnetic lock of this utility model embodiment one.As it can be seen, the present embodiment power distribution cabinet prevents that the charged electromagnetic lock closing ground knife system includes housing 11, lock pin controls module 12, locking bolt 13, handle 14 and normally opened switch module 15.
As shown in Figure 5,6, lock pin controls module 12, normally opened switch module 15 is installed in housing 11, the perforate 118 that the operating side of normally opened switch module 15 and power knob T pass on housing 11 exposes, see Fig. 4,6, switch module 15 controls module 12 with lock pin and is connected, and controls the access of module 12 power supply for controlling lock pin.
Handle 14 and locking bolt 13 are all movably arranged on housing 11, and handle 14 and locking bolt 13 connect together, and form link gear, in order to operation handle 14 can drive locking bolt 13 synchronizing moving.Concrete housing 11 is provided with the chute 111 axially in parallel with locking bolt 13, and handle 14 is arranged in chute 111 as also shown in e.g. figs. 4-7, and lower end is penetrated in housing 11 by chute 111 and is connected with locking bolt 13.Enlarging 1111 is located to its side in one end of chute 111, after handle 14 upward sliding puts in place, it is placed in enlarging 1111, enlarging 1111 is constituted makes locking bolt 13 be maintained at the retaining structure of non-restraining position for coordinating with handle 14 to block handle 14, this structure makes operator after locking bolt 13 is moved non-restraining position by restraining position by operation handle 14, it is possible to temporarily decontrols handle 14 and carries out other operation.Locking bolt 13 is arranged in housing 11, can slide axially along it, and locking bolt 13 side is provided with the locked groove 131 for holding lock pin 122 free end.As it is shown in fig. 7, in the present embodiment, lock pin 13 is a cylindrical body of rod, and locked groove 131 is made up of the annular groove of the radial direction being positioned in the middle part of the cylindrical body of rod.Securing contiguous block 132 on locking bolt 13, handle 14 is fixed on locking bolt 13 by contiguous block 132.Contiguous block 132 is positioned on locking bolt 13 top of locked groove 131, and contiguous block 132 is provided with and described locked groove 131 communication groove 1321, in order to the difference in height between balance locking bolt 13 and lock pin 122, common holds lock pin 122.In the present embodiment, the concrete mounting structure of locking bolt 13 is: relative having and two locking bolt holes 112 of cylindrical body of rod adaptation on housing 11 upper and lower end face, such as Fig. 4, shown in 6, cylindrical body of rod two ends lay respectively in locking bolt hole 112 described in two, and two locking bolt holes 112 constitute the rail plate of locking bolt 13.
Locking bolt 13 has to form, with the enterprising line side ground cutter of power distribution cabinet or three-station stop, the restraining position stoping described ground cutter or three-station to carry out closing the position limiting structure of ground cutter operation, such as Fig. 5, make power distribution cabinet enterprising line side ground cutter or three-station can normally complete the non-restraining position closing ground cutter operation with to cancel described position limiting structure, such as Fig. 6.Such as Fig. 5, shown in 10, when locking bolt 13 is in restraining position, the elongation of its lower end passes housing 11, in order to is formed with the enterprising line side ground cutter of power distribution cabinet or three-station stop and stops described ground cutter or three-station to carry out closing the position limiting structure that ground cutter operates；When locking bolt 13 is in non-restraining position, as shown in Figure 6, retract in its lower end, in order to cancels described position limiting structure, makes the enterprising line side ground cutter of power distribution cabinet or three-station can normally complete the cutter operation of conjunction ground.
As shown in Figure 5,6, lock pin control module 12 is adjacent with lock pin 13 in housing 11.When lock pin control module 12 is energized, its lock pin 122 extends, and during power-off, its lock pin 122 is retracted.Lock pin controls module 12 and coordinates with link gear, when its power-off, by the lock pin 122 of its elongation, locking bolt 13 is locked in restraining position, and its lock pin 122 of retracting after its energising releases the locking to locking bolt 13, make locking bolt 13 can move to non-restraining position with handle 14 from restraining position, namely moved to position in Fig. 6 by position in Fig. 5.
As it is shown in figure 5, the lock pin 122 that lock pin controls module 12 is relative with the side of locking bolt 13, the lock pin 122 of elongation offsets with the side of locking bolt 13, and under the effect of elastic mechanism (not shown), lock pin 122 can relative sliding with locking bolt 13.When locking bolt 13 is in restraining position, as shown in Figure 5, the free end of lock pin 122 is just relative with the locked groove 131 of locking bolt 13 side, when now lock pin 122 extends, its free end just stretches in locked groove 131, locking locking bolt 13, after lock pin 122 retraction, its free end exits locked groove 131, release the locking to locking bolt 13, now, driving handle 14, locking bolt 13 can be moved as the non-restraining position in Fig. 6 by restraining position in Fig. 5, in order to cancel the position limiting structure that locking bolt 13 is formed with the enterprising line side ground cutter of power distribution cabinet or three-station stop.
Locking bolt 13 returns to the process of restraining position from non-restraining position, namely returned in Fig. 5 in the process of position by position in Fig. 6, if lock pin controls the first power-off of module 12, as first unclamped power knob T, then release handle 14, the lock pin 122 of elongation is against the side of locking bolt 13, under the effect of elastic mechanism, locking bolt 13 and lock pin 122 relative sliding are until returning to restraining position, after locking bolt 13 returns to restraining position, the free end of lock pin 122 stretches in the locked groove 131 on locking bolt 13, locks locking bolt 13；If after locking bolt 13 returns to restraining position, lock pin controls module 12 just power-off, and after lock pin 122 elongation, namely its free end stretches into locking locking bolt 13 in the locked groove 131 on locking bolt 13.
Figure 10 is the use state reference map of the present embodiment electromagnetic lock, as shown in Figure 10, locking bolt 13 is in restraining position, its lower end extends, insert three-station stop 6 and test in (ground connection) handle hole, cooperatively form position limiting structure with stop 6, make the selector (not shown) coordinated with described stop 6 not can select that this position, stop three-station to carry out closing ground cutter operation with this.
Figure 12 is the top view of the electromagnetic lock of this utility model embodiment two.In embodiment two, the difference of the structure of electromagnetic lock and embodiment one is in that, in the present embodiment, locking bolt 13 is made up of the cylindrical body of rod and the rounded tabs 135 being positioned at locking bolt 13 lower end namely its operating side.The structure of locking bolt 13 in embodiment two, for coordinating with power distribution cabinet enterprising line side ground cutter, so that when the elongation of its locking bolt 13 is in restraining position, the rounded tabs 135 of locking bolt 13 operating side cooperatively forms, with power distribution cabinet enterprising line side ground cutter, the position limiting structure stoping described ground cutter to carry out closing ground cutter operation.
The electromagnetic lock of this utility model embodiment one also includes elastic mechanism, the present embodiment Elastic mechanism is compression spring, its medial surface being sleeved on the top of locking bolt 13, spring upper end and housing 11 offsets, and is used for making locking bolt 13 automatically restore to restraining position from non-restraining position.The present embodiment Elastic mechanism is not drawn into, and in other embodiments, it would however also be possible to employ tension spring, if noting arranging tension spring, tension spring should be positioned at the offside of above-mentioned compression spring.
The electromagnetic lock of this utility model embodiment one also includes forcing unlocking structure, forces unlocking structure to include the keyhole 113 unblanked key 17 be positioned on housing 11.As shown in Figure 8,9, key 17 of unblanking includes the shank of the key 171, and the shank of the key 171 free end side is provided with projection 1711, and end face is provided with blind hole.Keyhole 113 includes the lockhole 1131 being positioned on housing 11, and lockhole 1131 is adaptive with the free end of key 17 of unblanking, in order to para-position is inserted.Keyhole 113 also includes being arranged on the bearing pin 1132 below lockhole 1131 by support 1133, and bearing pin 1132 coordinates with described blind hole.Unblank key 17 para-position insert after, bearing pin 1132 just inserts in described blind hole, now operation rotation is unblanked key 17, the projection 1711 of the shank of the key 171 free end rotates in the lump, projection 1711 offsets with the Extendible flake 1221 being fixed on lock pin 122 in the process rotated, thus promoting lock pin 122 to retract exit locked groove 131.Support 1133 is additionally provided with block 1134, to coordinate the anglec of rotation limiting key 17 of unblanking with projection 1711, generally should limit its corner and be not more than 90 degree.
Figure 11 is the circuit theory diagrams of the sensor circuit of this utility model embodiment one.As it can be seen, sensor circuit includes, for three sensors A, B, the C being respectively connected with distribution inlet wire threephase cable, also including commutator, on-off circuit, power switch, power switch power supply circuits and three-phase indicating circuit.
Three sensors A, B, C outfan connect a commutator respectively, the AC signal that sensor exports is rectified into direct current signal by commutator.In the present embodiment, select halfwave rectifier component of diode D9, D8, D7 as commutator of the present utility model.As shown in figure 11, three sensors A, B, C are respectively outputted to diode D9, D8, D7 positive input, three sensors A, B, C outfan also respectively through diode D6, D5, D4 ground connection GND of Opposite direction connection.The outfan of three commutators is connected the phase indicating circuit Parallel opertation again input to on-off circuit respectively.As described in Figure, indicating circuit is constituted by after a LED 5, LED4, LED3 and one current-limiting resistance R5, R3, R1 series connection, entirety is in parallel with electric capacity of voltage regulation C3, C2, a C1 again.The inverse output terminal of diode D9, D8, D7 is connected with the input of each phase indicating circuit, and the outfan of each phase indicating circuit exports on-off circuit respectively through resistance R6, R4, R2 and diode D12, D11, D10 of series connection.The outfan of each phase indicating circuit is also respectively through reverse diode D3, D2, D1 ground connection GND.This utility model selects diode as commutator, it is possible to make to remind in a flashing manner the electriferous state of each phase cable of user as the three-phase indicating circuit of distribution inlet wire threephase cable electriferous state.
The outfan of on-off circuit is connected with the control circuit of power switch, the outfan of the control circuit of the power switch output head grounding by on-off circuit, on-off circuit controls the break-make of the control circuit of power switch by its open and close state, thus controlling the on off state of the output circuit of power switch.
The present embodiment on-off circuit is made up of audion Q2, Q3, Q1 of optocoupler U1 and three cascades.The input of optocoupler U1 is the input of described on-off circuit, an electric capacity C4 in parallel between two inputs of optocoupler U1, the forward outfan of optocoupler U1 is connected by the base stage of resistance R10 and audion Q1, positive output end also by resistance R9 with power switch power supply circuits is connected, the inverse output terminal of optocoupler U1 is connected with the base stage of audion Q2, simultaneously also by electric capacity C6 ground connection.The colelctor electrode of audion Q2 is connected with the forward outfan of optocoupler U1, and emitter stage is connected with the ground level of audion Q3.The colelctor electrode of audion Q3 is connected with the colelctor electrode of audion Q2, grounded emitter.The colelctor electrode of audion Q1 is connected with the outfan of power switch and the control circuit of relay K 1, and the emitter stage of audion Q1 is by the resistance R8 connected, power switch status indicator lamp and LED 2 ground connection.
The positive output end of power switch power supply circuits is connected with the input of the control circuit of power switch, negative output terminal ground connection.As it can be seen, input E1, E2 of power switch power supply circuits are connected with bridge rectifier D13 by current-limiting resistance R13.Inverse output terminal 4 ground connection of bridge rectifier D13, forward outfan 2 first passes through filter capacitor C5 ground connection, the control circuit of relay K 1 namely the input of control coil are arrived in output again, also by the resistance R7 of series connection, power switch power supply indicator and LED 1 ground connection, to indicate the state of power switch power supply.The present embodiment repeat circuit K1 control coil is a reverse sustained diode 14 in parallel also.
Accessing E1, E2 from the AC24V voltage of transformator output, voltage exports about 35V unidirectional current after D13, C5 rectifying and wave-filtering；
35V unidirectional current is powered to LED 1 by after resistance R7 current limliting, and LED1 is luminous；
Meanwhile, 35V unidirectional current provides bias voltage by resistance R9, R10 for Q1, and Q1 must conduct rear relay K1 adhesive, LED2 luminescence, and relay K 1 adhesive is by plant-grid connection electromagnetic lock；
When A phase is normal, voltage signal is powered to optocoupler U1 through D9, R5, LED5, R6, D12, LED5 glimmers to indicate A phase normal simultaneously, now optocoupler U1 conducting, Q2, Q3 obtain bias voltage conducting makes Q1 end, and LED2 extinguishes, and Q1 ends, relay K 1 remains off and does not close, and power supply does not access electromagnetic lock.
B phase, C facies principle are with A phase.As long as namely threephase cable has one mutually charged, then optocoupler U1 conducting, Q1 ends, and power supply does not access electromagnetic lock；When only threephase cable is all not charged, optocoupler U1 just ends, Q1 just must conduct, relay K 1 just adhesive, now just by plant-grid connection electromagnetic lock, can could unlock locking bolt, described handle could be operated after unblock and cancel described position limiting structure, make power distribution cabinet inlet wire side ground cutter or three-station can normally complete the cutter operation of conjunction ground, thoroughly prevent the generation of the charged pernicious misoperation fault closing ground cutter with this.
The power supply circuits of this utility model electromagnetic lock and power switch power supply circuits can homology can not also homology, during homology, namely LED1 can be used for indicating the state of electromagnetic lock power supply.
Detailed description of the invention of the present utility model is not limit so; under the above-mentioned basic fundamental thought premise of this utility model; according to the ordinary technical knowledge of this area and customary means to the amendment of this utility model content other various ways made, replacement or change, all within this utility model rights protection scope.As handle of the present utility model can also is that knob, in order to form position limiting structure by its rotation controlling locking bolt with power distribution cabinet enterprising line side ground cutter or three-station stop or cancel described position limiting structure.
Claims (10)
1. power distribution cabinet prevents a charged conjunction ground knife system, and including electromagnetic lock, described electromagnetic lock includes housing, lock pin controls module, and described lock pin controls module and is arranged in described housing, and described lock pin controls its lock pin elongation when module is energized, and during power-off, its lock pin is retracted；
nullIt is characterized in that，Described electromagnetic lock also includes locking bolt and handle，Described handle and locking bolt are all movably arranged on described housing，Described handle and described locking bolt connect together，Form link gear，To be operated by described handle driving described locking bolt synchronizing moving，Described locking bolt has to form, with the enterprising line side ground cutter of power distribution cabinet or three-station stop, the restraining position stoping described ground cutter or three-station to carry out closing the position limiting structure of ground cutter operation，Make power distribution cabinet enterprising line side ground cutter or three-station can normally complete the non-restraining position closing ground cutter operation with to cancel described position limiting structure，Described lock pin controls module and coordinates with described link gear，When lock pin controls module power-down，By the lock pin of its elongation, described locking bolt is locked in restraining position，And its lock pin of retracting after its energising is to release the locking to described locking bolt，Make locking bolt can move to non-restraining position with described handle from restraining position.
2. power distribution cabinet according to claim 1 prevents charged conjunction ground knife system, it is characterised in that is additionally provided with on described housing for coordinating with described handle and makes described locking bolt be maintained at the retaining structure of described non-restraining position to block described handle.
3. power distribution cabinet according to claim 2 prevents charged conjunction ground knife system, it is characterised in that be also equipped with on described link gear for making described locking bolt automatically restore to the elastic mechanism of restraining position from non-restraining position.
4. power distribution cabinet according to claim 3 prevents charged conjunction ground knife system, it is characterized in that, described electromagnetic lock also includes forcing unlocking structure, described pressure unlocking structure includes the keyhole unblanked key be positioned on described housing, after the described key described keyhole of insertion of unblanking completes unlocking action, described lock pin is promoted to make its locking released described locking bolt of retracting.
5. the power distribution cabinet according to claim 3 or 4 prevents charged conjunction ground knife system, it is characterized in that, described electromagnetic lock also includes normally opened switch module, described switch module is arranged in described housing, its operating side passes described housing and exposes, described switch module controls module with described lock pin and is connected, and controls described lock pin and controls the power on/off of module.
6. power distribution cabinet according to claim 5 prevents charged conjunction ground knife system, it is characterized in that, described power distribution cabinet prevents that the charged ground knife system that closes also includes the sensor circuit of the electriferous state for sensing distribution inlet wire threephase cable, described sensor circuit is connected with described electromagnetic lock, when sensing that described distribution inlet wire threephase cable is all not charged, control electromagnetic lock described in plant-grid connection.
null7. power distribution cabinet according to claim 6 prevents charged conjunction ground knife system，It is characterized in that，Described sensor circuit includes three sensors for being respectively connected with described distribution inlet wire threephase cable，Also include commutator、On-off circuit、Power switch and power switch power supply circuits，Described power switch has control circuit and output circuit，Three described sensor output connect a described commutator respectively，The AC signal that described sensor exports is rectified into direct current signal by described commutator，After the outfan parallel connection of three commutators, the input with described on-off circuit is connected，Described power switch power supply circuits are connected with the input of the control circuit of described power switch，The outfan of described on-off circuit is connected with the control circuit of described power switch，The outfan of the control circuit of the described power switch output head grounding by described on-off circuit，Described on-off circuit is opened by it、Off status controls the break-make of the control circuit of described power switch，Thus controlling the on off state of the output circuit of described power switch，The output circuit of described power switch is connected in the power supply circuits of described electromagnetic lock，To control the access of described electromagnetic lock power supply.
8. power distribution cabinet according to claim 7 prevents charged conjunction ground knife system, it is characterised in that the input of the control circuit of described power switch is also by power switch power supply indicator ground connection；The outfan of the control circuit of described power switch is also in series with power switch status indicator lamp.
9. power distribution cabinet according to claim 8 prevents charged conjunction ground knife system, it is characterized in that, the described anti-charged ground knife system that closes also includes the three-phase indicating circuit for indicating distribution inlet wire threephase cable electriferous state, described indicating circuit is constituted by after a light emitting diode and current-limiting resistance series connection, entirety is in parallel with an electric capacity of voltage regulation again, the outfan of the commutator of each phase connects after indicating circuit described in a phase Parallel opertation respectively to the input of described on-off circuit again, described commutator is a half-wave rectifier cell, to make to remind in a flashing manner the electriferous state of each phase cable of user as the three-phase indicating circuit of distribution inlet wire threephase cable electriferous state.
null10. power distribution cabinet according to claim 9 prevents charged conjunction ground knife system，It is characterized in that，Described locking bolt is slidably mounted in described housing，Described housing is provided with the chute axially in parallel with described locking bolt，Described handle is arranged in described chute，Lower end is penetrated in described housing by described chute and is connected with described locking bolt，When described locking bolt is in restraining position，The elongation of its one end passes described housing，The side of described locking bolt is provided with the locked groove for holding described lock pin free end，It is adjacent with described locking bolt in described housing that described lock pin controls module，Its lock pin is relative with the side of described locking bolt，The lock pin of elongation offsets with the side of described locking bolt，Under the effect of described elastic mechanism，Described lock pin and locking bolt energy relative sliding，When described locking bolt is in restraining position，The free end of described lock pin is just relative with the locked groove of described locking bolt side，If now lock pin elongation，Its free end just stretches in described locked groove，To lock described locking bolt，After lock pin retraction，Its free end exits described locked groove，Release the locking to described locking bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520985022.8U CN205376346U (en) | 2015-12-01 | 2015-12-01 | Electrified ground sword device that closes is prevented to switch board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520985022.8U CN205376346U (en) | 2015-12-01 | 2015-12-01 | Electrified ground sword device that closes is prevented to switch board |
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| Publication Number | Publication Date |
|---|---|
| CN205376346U true CN205376346U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520985022.8U Active CN205376346U (en) | 2015-12-01 | 2015-12-01 | Electrified ground sword device that closes is prevented to switch board |
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| CN (1) | CN205376346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468479A (en) * | 2018-05-29 | 2018-08-31 | 长园共创电力安全技术股份有限公司 | A kind of passive electromagnetic lock with automatic blocking function of low-power consumption |
-
2015
- 2015-12-01 CN CN201520985022.8U patent/CN205376346U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468479A (en) * | 2018-05-29 | 2018-08-31 | 长园共创电力安全技术股份有限公司 | A kind of passive electromagnetic lock with automatic blocking function of low-power consumption |
| CN108468479B (en) * | 2018-05-29 | 2024-03-29 | 长园共创电力安全技术股份有限公司 | Low-power-consumption passive electromagnetic lock with automatic locking function |
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