CN2747758Y

CN2747758Y - Electromagnetic error preventive door lock of High-low voltage switch cabinet

Info

Publication number: CN2747758Y
Application number: CN 200420069329
Authority: CN
Inventors: 贺永章
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-02
Filing date: 2004-12-02
Publication date: 2005-12-21
Anticipated expiration: 2014-12-02

Abstract

The utility model discloses an electromagnetic error preventive door lock of high-low voltage switch cabinet, comprising two or three transformers and a door lock 11. The first side of the transformer is provided with three receiving terminals respectively used for correspondently connected with a three-phase high-voltage line incoming bus-bar. The three line outgoing head ends of the secondary side coil of the transformer are respectively and correspondently connected with one receiving terminal of the one or three electromagnets arranged on the door lock. The other receiving terminal of the electromagnet is connected with the zero line of the secondary side coil, and one or three interlock mechanisms used for locking a locking bolt 10 are composed by the iron core 6 of the electromagnet and the locking bolt 10 in the door locking state when the electromagnet is powered. The utility model uses the secondary side of the transformer in the switch cabinet for providing the power supply to the electromagnetic error preventive door lock, so that the switch cabinet door is locked. So long as the high voltage supply is charged, the cabinet door of the high-low voltage switch cabinet can not be opened. Therefore, the personal casualty accident caused by the error entry of the charged intervals or the errorcontact of the charged bodies is avoided.

Description

The anti-error door lock of the electromagnetism of high and low voltage switch cabinet

Technical field

The utility model relates to the anti-error lock that opens the door of the electromagnetic type that is applicable to various high pressure or low-tension switch cabinet, is electric and mechanical interlocking formula structure.

Background technology

The high-tension switch cabinet of prior art or low-tension switch cabinet, as cabinet doors such as the incoming line cabinet of the fixed switch cubicle of box of GZS1 high-tension switch cabinet, HXGN-12 high pressure ring cabinet, GG1A high-tension switch cabinet, XGN2 series and looped network power distribution cabinet or outlet cabinets nearly all is to adopt the bolt switch, the charged cabinet door of opening of energy, existence is near electrified body or mistakenly entering charged chamber potential safety hazard, once the generation personnel casualty accident of getting an electric shock repeatedly.

The utility model content

The technical problems to be solved in the utility model is, defective at the prior art existence, a kind of anti-error door lock of electromagnetism of high and low voltage switch cabinet is proposed, it utilizes the secondary circuit of instrument transformer secondary side in the switch cubicle to provide power supply to the anti-error door lock of electromagnetism, the switch cubicle door lock is lived, as long as high voltage source has electricity, the cabinet door of high and low voltage switch cabinet just can not be opened, thereby avoids causing because of mistakenly entering charged chamber or false touch electrified body the generation of loss of life or personal injury.

Technical solution of the present utility model is, the anti-error door lock of the electromagnetism of described high and low voltage switch cabinet has the door lock of two to three instrument transformers and bolt with lock, described instrument transformer primary side has three respectively in order to the line end with the corresponding connection of three-phase high-voltage inlet wire busbar, its design feature is, terminals of same or three electromagnet of three outlet head ends of the second siding ring of described instrument transformer are corresponding to be connected, another terminals of this described electromagnet are connected with the zero line of described second siding ring, and described electromagnet its iron core when getting electricity condition is formed or three interlocking devices that lock this locking bolt with the locking bolt that is in the state of locking a door.

Below make and further specifying.

Referring to Fig. 1 to Fig. 3 and Fig. 6, the utility model has the door lock 11 of two to three instrument transformers and bolt with lock 10, and the primary side of described instrument transformer has three respectively in order to the terminals U with the corresponding connection of three-phase high-voltage inlet wire busbar _A, U _B, U _CIts design feature is, three outlet head end Ua of the second siding ring of described instrument transformer, Ub, Uc is respectively with an electromagnet 7 or three electromagnet 7 of being contained in the door lock, 8,9 terminals are corresponding to be connected, another terminals of described electromagnet all be connected (being ground connection) with the zero line of described second siding ring, and described electromagnet its iron core 6 when getting electricity condition is formed or three interlocking devices (referring to Fig. 3) that lock these locking bolts 10 with the locking bolt 10 that is in the state of locking a door (dead bolt of locking bolt front end extend out in the dead bolt box that enters on the doorframe, and door lock is contained on the door leaf).

A kind of feasible structure of described interlocking device as shown in Figure 3, it comprises described electromagnet, position, iron core 6 upper end corresponding to described electromagnet on the locking bolt 10 is respectively equipped with iron core hole 12, when electromagnet gets when electric described iron core 6 adhesives to upwards releasing, the upper end of iron core 6 enters in the iron core hole 12 of locking bolt 10, locks this locking bolt 10 and the left and right sides translation that makes it to produce orientation shown in Figure 3.

In order clearly to show charged situation, can between two terminals of electromagnet 7 (referring to Fig. 8) or

electromagnet

7,8,9, connect the indicator light 5 of the current-limiting resistance 4 of having connected.Described

electromagnet

7,8,9 has been connected in series the DC electromagnet of rectifier (rectifier diode) for alternating electromagnet or terminals.

Operation principle of the present utility model is (referring to Fig. 1 to Fig. 3), described door lock 11 is contained in (the door lock mounting means is installed routinely) on the cabinet door of high pressure or low-tension switch cabinet, when the arbitrary phase of three-phase high-voltage power supply or in the cabinet has electricity more than mutually, utilize the secondary circuit voltage respective electrical magnet power supply in door lock in the instrument transformer secondary side, pull-core and make it keeper fastened (locking), thus cabinet door lock is lived, as long as the secondary side voltage that high voltage source has electric induction to come out provides working power to work of electromagnet, high, the low-tension switch cabinet door just can't be opened, thereby has avoided the generation of the person electric shock casualty accident that mistakenly entering charged chamber and false touch electrified body caused reliably.The operation principle of Fig. 5 and device shown in Figure 6 is also identical with it.In the time of need opening the cabinet door of high pressure or low-tension switch cabinet, must first cutoff high power supply, make interlocking device remove locking to keeper, connect again normal mode open get final product.

As known from the above, the utility model is the anti-error door lock of a kind of electromagnetism of high and low voltage switch cabinet, it adopts the working method of electrical equipment and mechanical interlocking, utilize the loop of instrument transformer secondary side in the switch cubicle to provide power supply to the anti-error door lock of electromagnetism, switch cubicle is pinned, as long as high voltage source has electricity, the cabinet door of high pressure or low-tension switch cabinet just can not be opened (using key and external force door can't be opened at this moment); After having only the power supply decompression, could locking bolt be opened, thereby effectively avoid causing the generation of human casualty accident because of mistakenly entering charged chamber or false touch electrified body with key.

Description of drawings

Fig. 1 is the circuit structure diagram of a kind of embodiment;

Fig. 2 is a kind of positive TV structure of embodiment door lock;

Fig. 3 is the structural representation after door lock shown in Figure 2 removes loam cake;

Fig. 4 be door lock shown in Figure 2 look up structural representation (handle does not draw);

Fig. 5 is the circuit structure diagram of another kind of embodiment;

Fig. 6 is the circuit structure diagram of another embodiment;

Fig. 7 is interlocking device's structural representation of a kind of embodiment;

Fig. 8 adopts its supply terminals to be connected in series the winding diagram of the DC electromagnet of rectifier;

Fig. 9 adopts three its supply terminalss to be connected in series the winding diagram of the DC electromagnet of rectifier.

In the accompanying drawings:

The 1-voltage transformer, the 2-primary side,

The 3-secondary side, the 4-current-limiting resistance,

The 5-indicator light, the 6-iron core,

7,8, the 9-electromagnet, the 10-locking bolt,

The 11-door lock, 12-iron core hole,

The 13-lock core body, the 14-binding post,

The 15-key, the 16-handle,

17-high pressure inlet wire busbar, transducer is supported in the 18-insulation,

19-swings lock pin, 20-lock pin groove,

The 21-rectifier.

Embodiment

Embodiment 1: as shown in Figures 1 to 4, described instrument transformer adopts three voltage transformers 1 (commercially available prod), it once adopts Δ or Y connection with secondary side, and interlocking device is contained in the

electromagnet

7,8,9 in the door lock by three and forms at the locking bolt 10 that has iron core hole 12 corresponding to these three electromagnet core tip positions.

Embodiment 2: as shown in Figure 5, described inductor adopts commercially available insulation to support transducer 18, and all the other are with embodiment 1.

Embodiment 3: as shown in Figure 6, shown in instrument transformer adopt two voltage transformers 1, all the other are with embodiment 1.

Embodiment 4: as shown in Figure 7, a kind of structure of described interlocking device is, it has the locking bolt 10 of lock pin groove 20 by end face and forms corresponding to the swing lock pin 19 of described lock pin groove 20, and the rear end of this swing lock pin 19 is connected with the iron core of described electromagnet and the back-moving spring that makes swing lock pin 19 open (release lock cotter way 20) is housed.All the other are with embodiment 1.When electromagnet gets electric downward pull-core and makes swing lock pin 19 move downward and enter in the lock pin groove 20, locking locking bolt 10.

Claims

1, the anti-error door lock of a kind of electromagnetism of height switch cubicle has the door lock (11) of two to three instrument transformers and bolt with lock (10), the primary side of described instrument transformer to have three respectively in order to the corresponding terminals U that connect of three-phase high-voltage inlet wire busbar _A, U _B, U _CIt is characterized in that, three outlet head end Ua of the second siding ring of described instrument transformer, Ub, Uc are with being contained in the electromagnet (7) in the door lock or corresponding connection of terminals of three electromagnet (7,8,9), another terminals of described electromagnet are connected with the zero line of described second siding ring, and described electromagnet its iron core (6) when getting electricity condition is formed or three interlocking devices that lock this locking bolt (10) with the locking bolt (10) that is in the state of locking a door.

2, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1 is characterized in that, connects the indicator light (5) of connected current-limiting resistance (4) between two terminals of described electromagnet.

3, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1, it is characterized in that, the structure of described interlocking device is that it comprises described electromagnet, is respectively equipped with iron core hole (12) corresponding to position on the iron core (6) of described electromagnet on the locking bolt (10).

4, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1, it is characterized in that, the structure of described interlocking device is, it has the locking bolt (10) of lock pin groove (20) by end face and forms corresponding to the swing lock pin (19) of described lock pin groove (20), and the rear end of this swing lock pin (19) is connected with the iron core of described electromagnet and is equipped with and makes the open back-moving spring of swing lock pin (19).

5, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1 is characterized in that, described instrument transformer is voltage transformer (1).

6, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1 is characterized in that, described instrument transformer is supported inductor (18) for insulation.

7, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1 is characterized in that, described electromagnet is an alternating electromagnet.

8, the anti-error door lock of the electromagnetism of high and low voltage switch cabinet according to claim 1 is characterized in that, described electromagnet is the DC electromagnet that terminals have been connected in series rectifier.