CN112201500A - Safety lock system of high-voltage switch cabinet - Google Patents

Abstract

The invention discloses a safety lock system of a high-voltage switch cabinet, which comprises a main body part, a main lock body assembly, an auxiliary lock body assembly and an electric control switch assembly, wherein the main body part comprises a shell and a clamping groove, a transverse channel is arranged in the shell along the transverse direction, a vertical slide way is arranged in the shell along the vertical direction, the two channels are vertical and identical, the clamping groove is independently arranged in a corresponding groove of a door frame with the shell, and the clamping groove corresponds to the transverse channel. The invention adds an electromagnetic control mechanism on the basis of a mechanical lock mechanism, and a matched electronic key and an operation realize the anti-misoperation locking function. The personal and major equipment accidents caused by misoperation of the high-voltage switch cabinet are effectively prevented.

Description

Safety lock system of high-voltage switch cabinet

Technical Field

The invention belongs to the technical field of electrical equipment, and particularly relates to a safety lock system of a high-voltage switch cabinet.

Background

With the rapid development of the substation automation technology and the increasing requirement on the power supply reliability, the function of the switch cabinet in the substation is more prominent. Therefore, how to ensure the safe and reliable operation of the high-voltage switch cabinet in the substation becomes an important task of the power transformation operation and maintenance work of the power system, but in the actual production and actual work, the misoperation accidents of the switch cabinet still frequently occur.

For the application of a high-voltage switch cabinet, according to the requirement of preventing the medium-voltage switch equipment from entering the electrified interval by mistake in the five-prevention requirement, the interlocking control of a removable component of a cabinet body and an electrified compartment needs to be controlled in the running process of the 35kV medium-voltage switch equipment. The high-voltage switch cabinet should install perfect anti-misoperation locking device, and have perfect reliable anti-misoperation locking function, do not have the additional mechanical lock of anti-misoperation locking function. However, at present, some switch cabinets are not provided with perfect anti-misoperation locking devices, and only the anti-misoperation locking function of the switch cabinet is relied on, and even some switch cabinet doors only prevent workers from entering by mistake by using screws for fixing.

The electric appliance cabinet door operation interlocking device with the publication number of CN 1098414A comprises a circuit breaker frame, wherein a rotating shaft extending along the vertical direction and a limiting part capable of moving left and right are arranged on the circuit breaker frame, and a locking position for limiting the upward and downward movement of a shaking hole blocking piece of a shaking hole in the circuit breaker frame and an unlocking position for releasing the upward and downward movement of the shaking hole blocking piece of the shaking hole in the circuit breaker frame are arranged on the movable stroke of the limiting part; the rotating shaft is further matched with an interlocking piece in a rotation stopping mode, the interlocking piece is provided with a pressed part which drives the rotating shaft to rotate under the pressure when the cabinet door is closed so that the limiting piece can move from the locking position to the unlocking position, and the breaker frame is further provided with an elastic resetting piece which provides acting force for the limiting piece. The circuit breaker chamber of having avoided the cubical switchboard when cabinet door open condition is electrified, the main bus is connected and is formed the high-voltage circuit, and the electrified interval is gone into to the mistake, nevertheless because cubical switchboard prevents that maloperation blocking device is imperfect, unreliable or because of the more accident that the operation of unblanking still caused unauthorized.

Disclosure of Invention

Aiming at the defects and problems of the high-voltage switch cabinet door operation interlocking device in the practical application process, the invention provides a high-voltage switch cabinet safety lock system.

The technical scheme adopted by the invention for solving the technical problems is as follows: a safety lock system of a high-voltage switch cabinet comprises a main body part, a main lock body assembly, an auxiliary lock body assembly and an electric control switch assembly, wherein the main body part comprises a shell and a clamping groove, a transverse channel is transversely arranged in the shell, a vertical slide way is vertically arranged in the shell, the two channels are vertically communicated, the clamping groove is independent of the shell and is arranged in a corresponding groove of a door frame, and the clamping groove corresponds to the transverse channel; the main lock body assembly comprises a fixed seat, a main sliding rod and a main spring, the main sliding rod is sleeved in the transverse channel in a matching mode, the fixed seat is fixedly sleeved on the outer side of the main sliding rod, the main spring is connected between the rear side of the fixed seat and the inner wall of the shell, the fixed seat is also connected with an armature, an electromagnet is fixed on the inner wall of the shell corresponding to the position of the armature, a main lock tongue is arranged at the front end of the main sliding rod, and the main lock tongue can enter the clamping groove in a matching mode after extending outwards; the auxiliary lock body assembly comprises a vertical slide way, a square sliding sleeve and a lock core, the square sliding sleeve is sleeved in the vertical slide way, the side wall of the square sliding sleeve is respectively provided with a retaining ring and a front retaining ring, an auxiliary spring is connected between the retaining ring and the inner wall of the shell, the square sliding sleeve contains an inner cavity, an auxiliary tongue is sleeved in the inner cavity in a matching manner, an inner spring is connected between the bottom of the inner cavity and the auxiliary tongue, one side, close to the lock core, of the auxiliary tongue is provided with an inclined plane and an axial lock tongue sliding groove, meanwhile, the side wall of the square sliding sleeve corresponding to the lock tongue sliding groove is provided with an insertion hole, and after a shifting fork connected with a lock core rotating body is.

The electronic control switch assembly comprises a controller and an electronic key, a first backseat is fixed at the rear end of a transverse sliding way, a door opening trigger switch is installed on the inner wall of the first backseat, the door opening trigger switch can be touched to generate a trigger signal when the transverse sliding rod moves backwards to reach a limit position, the trigger signal is connected with one signal input end of the controller, a second backseat is fixed at the rear end of the vertical sliding way, a circuit starting switch is installed inside the second backseat, the circuit starting switch can be started when the rear end of the square sliding sleeve rises to the limit position, the circuit starting switch is connected with the second signal input end of the controller, a control output end of the controller is connected with an electromagnet, and a signal output end of the controller is connected with the electronic key through a wireless module.

Meanwhile, the controller sends the door opening trigger switch to a background monitoring system and provides a starting signal for the controller, the controller establishes a communication relation with the electronic key according to the starting signal, starts an electromagnet to be electrified after feedback information of the electronic key is obtained, and meanwhile the controller sends the starting signal to the background monitoring system through the wireless module.

The main key is axially arranged in the transverse channel, the corresponding key groove is formed in the side wall of the main sliding rod, and the main key is clamped in the key groove in a matching mode.

The front and the back of the fixing seat are respectively provided with an annular bulge, the matching groove is formed between the front bulge and the back bulge, the annular bulge on the front side of the fixing seat is a baffle, the back wall of the annular bulge at the back end of the fixing seat is provided with a main spring seat, and the main spring is sleeved in the main spring seat.

The armature is fixed below the annular protrusion at the rear end.

The controller sends the corresponding unlocking or triggering signal to the background monitoring system, and the unlocking process can be completed only after the background monitoring system confirms the unlocking or triggering signal.

The background monitoring system analyzes whether the unlocking time is proper or not and provides corresponding alarm or voice prompt for the site through the interphone or the necessary playing equipment.

The invention has the beneficial effects that: the invention adds an electromagnetic control mechanism on the basis of a mechanical lock mechanism, and a matched electronic key and an operation realize the anti-misoperation locking function. The personal and major equipment accidents caused by misoperation of the high-voltage switch cabinet are effectively prevented. When the controller receives the matched electronic key after the mechanical lock is opened, the controller can control the electromagnetic lock to be opened. And the unlocking process can be completed only by the confirmation of the background monitoring system, and the background monitoring system also provides corresponding alarm or voice prompt for the site.

Drawings

FIG. 1 is a schematic cross-sectional view of the anti-prying mechanism of the present invention

Fig. 2 is a schematic sectional view of the housing.

Fig. 3 is a flow chart of the mechanical lock movement of the anti-pry mechanism of the present invention.

Fig. 4 is a schematic view of the position of the auxiliary latch in the original locking state.

FIG. 5 is a schematic view of the square sliding sleeve and the auxiliary bolt simultaneously driven by the fork.

Fig. 6 is a schematic view of passive locking of the auxiliary bolt after being driven by the blocking plate.

Reference numbers in the figures: the lock comprises a main body part 1, a main lock body component 2, an auxiliary lock body component 3, an electronic control switch component 4, a shell 11, a main key 12, an electromagnet 14, a door frame 15, a clamping groove 16, a fixed seat 21, a baffle 22, an armature 23, a main slide rod 24, a main spring seat 25, a main spring 26, a main bolt 27, a transverse channel 28, a key groove 29, a vertical slideway 31, a square sliding sleeve 32, an inner cavity 321, a baffle ring 33, a jack 34, an auxiliary bolt 35, a bolt sliding groove 351, a sliding groove inner side wall 352, a lock cylinder 36, a shifting fork 37, an auxiliary spring 38, an inner spring 39, a first rear seat 41, a door opening trigger switch 42, a second rear seat 43, a circuit start switch 44 and an inner.

Detailed Description

The high-voltage switch cabinet needs to have a corresponding safety station system, aiming at the problem that the existing high-voltage switch cabinet is easily unlocked without permission to cause accidents, the existing improved technology adopts an anti-misoperation locking device, but the problems of complex structure and poor protection performance exist, the embodiment adopts the high-voltage switch cabinet safety lock system shown in figure 1, and the system combines a mechanical lock, an electromagnetic lock and an electronic key and is matched with a background monitoring system to play a good anti-misoperation locking function.

In addition, this embodiment also is applicable to transforming the use to the regulator cubicle commonly used on the market at present, and the regulator cubicle lock commonly used on the market at present mainly has two kinds of locks, and one kind does not have the key, has a button switch usually, presses button switch and can unblank. The other type of the electric cabinet with the lockset is provided with a simple mechanical lock core and can be opened through a matched key, and the electric cabinet with the lockset is only provided with one layer of protection due to the simple mechanical lock core, and is easy to open or pry open due to misoperation. The scheme through this embodiment can carry out secondary operation and installation with the regulator cubicle after purchasing back and need the mounting panel and the corresponding tool to lock of customization.

The safety lock system of the high-voltage switch cabinet as shown in figure 1 mainly comprises: the lock comprises a main body part 1, a main lock body assembly 2, an auxiliary lock body assembly 3, an electric control switch assembly 4 and the like.

Specifically, the main body portion 1 includes a housing 11 and a slot 16, the housing 11 is provided with a transverse channel 28 along the transverse direction and a vertical slide 31 along the vertical direction, as shown in fig. 2, and the two channels are vertically communicated with the activity room. As can be seen in fig. 1, the slot 16 is separate from the housing and is mounted in a corresponding recess in the door frame 15, the slot 16 corresponding in position to the transverse channel 28.

The main bolt may be cylindrical or prismatic, and is usually provided with a round chamfer at the corner of the prism, such as a square column. A primary key 12 may also be axially disposed within the transverse channel 28, with a corresponding keyway 29 disposed in the side wall of the primary slide 24, the primary key 12 being matingly snap fit within the keyway 29.

Similarly, an auxiliary key may be fixed on the inner wall of the vertical channel 31, and a sliding groove is provided on the side wall of the baffle ring 33, and the auxiliary key and the sliding groove are matched and sleeved together.

As shown in fig. 1, the main lock body assembly 2 includes a fixing seat 21, a main sliding rod 24 and a main spring 26, the main sliding rod 24 is sleeved in the transverse channel 28 in a matching manner, the fixing seat is sleeved outside the main sliding rod 24, the spring is connected between the rear side of the fixing seat 21 and the inner wall of the housing 11, the fixing seat is further connected with an armature 23, the inner wall of the housing corresponding to the position of the armature 23 is fixed with an electromagnet 14, the front end of the main sliding rod 24 is a main lock tongue 27, and the main lock tongue 27 can enter the clamping groove 16 in a matching manner after extending outwards. The electromagnet 14 is fixedly sleeved in an inner bracket 45, and the inner bracket 45 is fixed at one corner of the inner wall of the shell 11 through screws. The inner support 45 is made of a metal magnetic conductive material to enhance and transmit the magnetic force to the electromagnet.

The front and the back of the fixed seat 21 are respectively provided with an annular bulge, the matching groove is formed between the front bulge and the back bulge, the annular bulge on the front side of the fixed seat 21 is a baffle plate 22, the back wall of the annular bulge on the back end of the fixed seat 21 is provided with a main spring seat 25, and the main spring 26 is sleeved in the main spring seat 25.

The armature 23 is fixed under an annular projection at the rear end. The auxiliary lock body component 3 comprises a vertical slideway 31, a square sliding sleeve 32 and a lock cylinder 36, the square sliding sleeve 32 is sleeved in the vertical slideway 31, the side wall of the square sliding sleeve 32 is respectively provided with a baffle ring 33 and a front baffle ring, an auxiliary spring 38 is connected between the baffle ring 33 and the inner wall of the shell 11, the square sliding sleeve 32 contains an inner cavity 321, an auxiliary tongue 35 is sleeved in the inner cavity in a matching manner, an inner spring 39 is connected between the bottom of the inner cavity and the auxiliary tongue 35, one side of the auxiliary tongue, which is close to the lock cylinder 36, is provided with an inclined plane and a lock tongue chute 351 along the axial direction, meanwhile, a jack 34 is arranged on the side wall of the square sliding sleeve corresponding to the lock tongue chute, and after a shifting fork 37 connected with a lock cylinder rotating. When the lock cylinder rotates and drives the shifting fork to rotate, the shifting fork drives the square sliding sleeve 32 and the auxiliary lock tongue 35 simultaneously, the square sliding sleeve and the auxiliary lock tongue move outwards synchronously, the circuit starting switch 44 is released and started to give a signal to the controller after the square sliding sleeve and the auxiliary lock tongue reach the extreme position, the controller controls the relay to supply power to the electromagnet, the electromagnet attracts the main spring seat through magnetism after being electrified, the main spring is forced to be compressed, and then the main lock tongue retreats to open the door. The lock core can automatically reset after rotating, namely the square sliding sleeve and the auxiliary lock tongue retract inwards at the same time. The controller provides the electric magnet and delays circular telegram 5 seconds back outage, and the main spring seat is promoted by the main spring and drives main spring bolt and gos forward after the outage, and the inclined plane that is located main spring seat front side promotes the assistance spring bolt makes it compressed, and the assistance spring bolt is by the compression process, and the shift fork is located the spring bolt spout all the time, and the lock core can not restrict the assistance spring bolt and because of baffle driven flexible action this moment.

The electric control switch assembly 4 comprises a controller and an electronic key, a first backseat 41 is fixed at the rear end of the cross slideway 28, a door opening trigger switch 42 is arranged on the inner wall of the first backseat 41, the door opening trigger switch 42 can be touched to generate a trigger signal when the cross-slide bar 24 moves backward to reach the limit position, the trigger signal is connected with one of the signal input ends of the controller, and the controller sends the trigger signal to the background monitoring system, a second rear seat 43 is fixed at the rear end of the vertical slideway, a circuit starting switch 44 is arranged in the second rear seat 43, when the rear end of the square sliding sleeve 32 rises to the limit position, the circuit starting switch 44 can be started, the circuit starting switch 44 provides a starting signal for the controller, the controller establishes a communication relation with the electronic key according to the starting signal, after the electronic key feedback information is obtained, the electromagnet is started to be electrified, and meanwhile, the controller sends a starting signal to the background monitoring system through the wireless module.

In use, the housing 11 is fixedly mounted to the inside of the cabinet door adjacent the edges, preferably completely enclosed within a concealed interlayer. Ensuring that the main bolt 27 can extend out of the housing. The slot 16 is fixed in a recess in one side of the door frame and the main bolt 27 is allowed to extend into the slot 16. The locked state is shown in fig. 1, and the unlocking process firstly needs to insert a key into the lock core and rotate the key, so that the shifting fork drives the stop ring 33 and further drives the direction sliding sleeve 32 to move upwards, as shown in fig. 3. The square sliding sleeve 32 can trigger the door opening trigger switch 42 after moving upwards to reach the extreme position, and after receiving the trigger signal, the controller also needs to receive the sensing signal of the electronic key at the same time, and the electronic key usually needs to be worn by the person in charge, and even if the mechanical lock is opened by the key or driven by the handle without the electronic key, referring to fig. 3, the main lock tongue still cannot be driven to move backwards, that is, the unlocking effect cannot be realized.

As shown in the unlocking flow in fig. 3, when the controller receives the matched electronic key after the mechanical lock is unlocked, the controller can control the electromagnetic lock to be unlocked. The process controller also needs to send a corresponding unlocking or triggering signal to the background monitoring system, and even needs the background monitoring system to confirm that the unlocking process can be completed. The background monitoring system can also analyze whether the unlocking time is proper or not and provide corresponding alarm or voice prompt for the site, for example, the alarm prompt is given through an interphone or necessary playing equipment.

Fig. 4 shows the original locked state, in which the square sliding sleeve and the auxiliary lock cylinder are both in the retracted position. Fig. 5 shows the process of actuating the secondary bolt to move when the lock is opened with a mechanical key, with the square sliding sleeve and the secondary lock cylinder being simultaneously actuated to extend outward. Fig. 6 shows that the auxiliary bolt is not restrained after the lock core is reset, at this time, after the auxiliary bolt is driven by the baffle, the shifting fork and the anti-skid sleeve do not extend outwards any more, but the main spring seat and the front side baffle can drive the auxiliary bolt to freely stretch out and draw back in the resetting process. Therefore, the auxiliary bolt and the main bolt can be automatically reset after the door is opened, wherein the resetting of the main bolt is actually controlled by the timing of the controller.

Claims (6)

1. A safety lock system of a high-voltage switch cabinet comprises a main body part (1), a main lock body assembly (2), an auxiliary lock body assembly (3) and an electric control switch assembly (4), and is characterized in that the main body part (1) comprises a shell (11) and a clamping groove (16), a transverse channel (28) is transversely arranged in the shell (11), a vertical slide way (31) is vertically arranged in the shell, the two channels are vertically communicated, the clamping groove (16) is independent of the shell and is arranged in a corresponding groove of a door frame (15), and the clamping groove (16) corresponds to the transverse channel (28); the main lock body assembly (2) comprises a fixed seat (21), a main sliding rod (24) and a main spring (26), the main sliding rod (24) is sleeved in the transverse channel (28) in a matching mode, the fixed seat is fixedly sleeved on the outer side of the main sliding rod (24), the main spring (26) is connected between the rear side of the fixed seat (21) and the inner wall of the shell (11), the fixed seat is further connected with an armature (23), an electromagnet (14) is fixed on the inner wall of the shell corresponding to the position of the armature (23), a main bolt (27) is arranged at the front end of the main sliding rod (24), and the main bolt (27) can enter the clamping groove (16) in a matching mode after extending outwards; the auxiliary lock body assembly (3) comprises a vertical slide way (31), a square sliding sleeve (32) and a lock cylinder (36), the square sliding sleeve (32) is sleeved in the vertical slide way (31), the side wall of the square sliding sleeve (32) is respectively provided with a baffle ring (33) and a front baffle ring (34), an auxiliary spring (38) is connected between the baffle ring (33) and the inner wall of the shell (11), the square sliding sleeve (32) comprises an inner cavity (321), an auxiliary tongue (35) is sleeved in the inner cavity in a matched mode, an inner spring (39) is connected between the bottom of the inner cavity and the auxiliary tongue (35), one side, close to the lock cylinder (36), of the auxiliary tongue is provided with an inclined plane and a lock tongue slide groove (351) along the axial direction, meanwhile, a jack (34) is arranged on the side wall of the square sliding sleeve corresponding to the lock tongue slide groove, and after a shifting fork (37) connected with a lock cylinder rotation body is inserted into.

2. Safety lock system according to claim 1, characterized in that a main key (12) is axially arranged in a transverse channel (28) while a corresponding key slot (29) is arranged in the side wall of the main slide (24), the main key (12) being adapted to be snapped into the key slot (29).

3. The safety lock system of the high-voltage switch cabinet according to claim 1, wherein the front and the back of the fixed seat (21) are respectively provided with an annular protrusion, the front protrusion and the back protrusion form the matching groove, the annular protrusion on the front side of the fixed seat (21) is a baffle plate (22), the rear wall of the annular protrusion on the rear end of the fixed seat (21) is provided with a main spring seat (25), and the main spring (26) is sleeved in the main spring seat (25).

4. High-voltage switchgear safety lock system according to claim 3, characterized in that the armature (23) is fixed under an annular projection at the rear end.

5. The high tension switchgear safety lock system of claim 1, wherein the controller sends a corresponding unlock or trigger signal to the background monitoring system, and the background monitoring system can complete the unlock process after confirmation.

6. The safety lock system of the high-voltage switch cabinet according to claim 5, wherein the background monitoring system analyzes whether the unlocking time is proper or not, and provides corresponding alarm or voice prompt for a site through an interphone or necessary playing equipment.

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